KR102798096B1 - Multi-flow control electric valve for launch vehicle - Google Patents

Abstract

A multi-flow control electric valve for a launch vehicle according to the present invention comprises: a body assembly (100); a drive assembly (200) coupled to the body assembly (100) and generating a linear stroke; a carrier assembly (300) coupled to the drive assembly (200) and moving linearly; and a plurality of valve assemblies coupled to the body assembly (100) and having an opening value adjusted according to the movement of the carrier assembly (300).
The multi-flow control electric valve for a launch vehicle according to the present invention has the advantage of minimizing the load in a device where weight is important, such as a launch vehicle, an aircraft, or a space probe, because two valve assemblies can be controlled simultaneously by one motor.

Description

{Multi-flow control electric valve for launch vehicle}

The present invention relates to a multi-flow control electric valve used in a launch vehicle.

A valve that controls the flow rate regulates the flow rate by changing the area of the fluid flow area. The area of the fluid flow area is implemented by changing the stroke of the pintle.

The thrust of a liquid rocket engine or aircraft engine is controlled by controlling the flow rate of fluid supplied to the engine, so the flow control valve is one of the important parts of the engine.

In general, the pintle of the valve can be easily controlled using an electric motor.

For ground engines where weight is not important, each flow control valve is controlled by a separate electric motor.

However, in devices where weight is important, such as launch vehicles, aircraft, or space probes, installing an electric motor for each valve increases the weight, which has a problem in affecting the launch vehicle.

Republic of Korea Patent No. 10-1324957 Republic of Korea Patent No. 10-2398700

The present invention has been made to solve the above-mentioned conventional problems, and its purpose is to provide a multi-flow control electric valve capable of controlling a plurality of valves through a single motor.

The present invention provides a multi-flow control electric valve for a launch vehicle, which comprises: a body assembly (100); a drive assembly (200) coupled to the body assembly (100) and generating a linear stroke; a carrier assembly (300) coupled to the drive assembly (200) and moving linearly; and a plurality of valve assemblies coupled to the body assembly (100) and having an opening value adjusted according to the movement of the carrier assembly (300).

The above body assembly (100) may include a main body (110) that is arranged horizontally, and a supporter (120) that is coupled to the main body (110) and to which the drive assembly (200) is assembled.

The above driving assembly (200) may include an electric motor (210) coupled to the main body (110) and operated by an applied power source, a screwdriver (220) coupled to the electric motor (210) and rotated, and an actuator (230) engaged with the screwdriver (220) and moved in a straight line along the screwdriver (220) when the screwdriver (220) rotates.

The above screwdriver (220) can be rotatably assembled with the supporter (120) by penetrating the main body (110).

The above valve assembly includes a first valve assembly (400) and a second valve assembly (500), and the first valve assembly (400) is arranged on the left side of the carrier assembly (300) and the second valve assembly (500) is arranged on the right side of the carrier assembly (300), and when the carrier assembly (300) operates, the first valve assembly (400) and the second valve assembly (500) can be controlled simultaneously.

The carrier assembly (300) is arranged on the upper side of the main body (110), is assembled with the actuator (230), and includes a core body (350) that moves together with the actuator (230), a main assembly member (340) that assembles the core body (350) and the actuator (230), a first assembly member (310) that is arranged on one side of the core body (350) and assembles the first valve assembly (400) and the core body (350), a second assembly member (320) that is arranged on the other side of the core body (350) and assembles the second valve assembly (500) and the core body (350), and a second assembly member (320) that is coupled to the core body (350) and is arranged to penetrate the main body (110). It may include a main load (360), a load guide (370) coupled to the main load (360), an elastic member (380) disposed between the load guide (370) and the main body (110) and elastically supporting the load guide (370) and the main body (110), a first carrier (430) intersectingly assembled with the first assembly member (310) and providing a linear driving force to the first valve assembly (400), and a second carrier (530) intersectingly assembled with the second assembly member (320) and providing a linear driving force to the second valve assembly (500).

The above main body (110) may include a driver hole (111) through which the screwdriver (220) passes in the vertical direction, a main rod hole (112) through which the main rod (360) passes in the vertical direction, a first valve hole (113) through which the first valve assembly (400) passes in the vertical direction, and a second valve hole (114) through which the second valve assembly (500) passes in the vertical direction.

The above actuator (230) may include an outer actuator (232) assembled with the core body (350) and having an outer penetration hole (231) formed through which the screwdriver (220) passes in the vertical direction, an inner actuator (234) assembled to the outer actuator (232) and having an inner penetration hole (233) formed through which the screwdriver (220) passes in the vertical direction, and an actuator assembly part (235) protruding forward from the outer actuator (232) and assembled with the carrier assembly (300).

The core body (350) may include a first core groove (351) arranged on the left side and into which the first assembly member (310) is fitted, a second core groove (352) arranged on the right side and into which the second assembly member (320) is fitted, a main core groove (354) arranged on the rear side and into which the main assembly member (340) is fitted, and a core rod hole (355) through which the main rod (360) passes in the vertical direction.

The first valve assembly (400) may include a first valve housing (410) fixed to the main body (110), a first pintle (420) inserted into the first valve housing (410) to control the flow rate, and a first carrier (430) connecting the first pintle (420) and the carrier assembly (300), and the second valve assembly (500) may include a second valve housing (510) fixed to the main body (110), a second pintle (520) inserted into the second valve housing (510) to control the flow rate, and a second carrier (530) connecting the second pintle (520) and the carrier assembly (300).

First, since the multi-flow control electric valve for a launch vehicle according to the present invention can simultaneously control two valve assemblies through one motor, it has the advantage of minimizing the load in devices where weight is important, such as launch vehicles, aircraft, or space probes.

Second, the multi-flow control electric valve for a launch vehicle according to the present invention has the advantage of improving operational reliability because it can compensate for the axis of each pintle in a plurality of valve assemblies spaced apart from the carrier assembly (300) by elastic deformation of the assembly members.

FIG. 1 is a perspective view of a multi-flow control electric valve for a launch vehicle according to a first embodiment of the present invention.
Figure 2 is a rear perspective view of Figure 1.
Figure 3 is a front view of Figure 1.
Figure 4 is a right side view of Figure 1.
Figure 5 is a plan view of Figure 1.
Figure 6 is a bottom view of Figure 1.
Figure 7 is a cross-sectional view of Figure 1.
Figure 8 is a right cross-sectional view of Figure 1.
Figure 9 is an operational perspective view of the carrier assembly illustrated in Figure 1.
Figure 10 is an operating plan view of the carrier assembly shown in Figure 1.
Figure 11 is an operational front view of the carrier assembly illustrated in Figure 1.
Fig. 12 is an enlarged view of a portion of the first valve assembly illustrated in Fig. 7.
Fig. 13 is an enlarged view of a portion of the second valve assembly illustrated in Fig. 7.
FIG. 14 is a perspective view of a multi-flow control electric valve for a launch vehicle according to a second embodiment of the present invention.

The present invention can have various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, but should be understood to include all modifications, equivalents, or substitutes included in the spirit and technical scope of the present invention. In describing each drawing, similar reference numerals are used for similar components.

Although the terms first, second, A, B, etc. may be used to describe various components, the components should not be limited by the terms. The terms are only used to distinguish one component from another. For example, without departing from the scope of the present invention, the first component could be referred to as the second component, and similarly, the second component could also be referred to as the first component. The term "and/or" includes any combination of a plurality of related listed items or any item among a plurality of related listed items.

When it is said that a component is "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components in between. On the other hand, when it is said that a component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

The terminology used in this application is only used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, it should be understood that the terms "comprises" or "has" and the like are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms defined in commonly used dictionaries, such as those defined in common dictionaries, should be interpreted as having a meaning consistent with the meaning they have in the context of the relevant art, and will not be interpreted in an idealized or overly formal sense unless expressly defined in this application.

In this document, "configured to" can be used interchangeably with, for example, hardware-wise or software-wise, "suitable for," "capable of," "modified to," "made to," "capable of," or "designed to." In some contexts, the expression "a device configured to" can mean that the device is "capable of" doing so together with other devices or components.

Hereinafter, with reference to the attached drawings, a preferred embodiment of the present invention will be described in more detail. In order to facilitate an overall understanding in describing the present invention, the same reference numerals are used for the same components in the drawings, and redundant descriptions of the same components are omitted.

FIG. 1 is a perspective view of a multi-flow control electric valve for a launch vehicle according to a first embodiment of the present invention, FIG. 2 is a back perspective view of FIG. 1, FIG. 3 is a front view of FIG. 1, FIG. 4 is a right side view of FIG. 1, FIG. 5 is a plan view of FIG. 1, FIG. 6 is a bottom view of FIG. 1, FIG. 7 is a sectional view of FIG. 1, FIG. 8 is a right side sectional view of FIG. 1, FIG. 9 is an operational perspective view of a carrier assembly illustrated in FIG. 1, FIG. 10 is an operational plan view of the carrier assembly illustrated in FIG. 1, FIG. 11 is an operational front view of the carrier assembly illustrated in FIG. 1, FIG. 12 is an enlarged view of a portion of a first valve assembly illustrated in FIG. 7, and FIG. 13 is an enlarged view of a portion of a second valve assembly illustrated in FIG. 7.

A multi-flow control electric valve for a launch vehicle according to the present embodiment comprises a body assembly (100), a drive assembly (200) coupled to the body assembly (100) and generating a linear stroke, a carrier assembly (300) coupled to the drive assembly (200) and moving linearly, and a plurality of valve assemblies coupled to the body assembly (100) and having an opening value adjusted according to the movement of the carrier assembly (300).

The above body assembly (100) includes a main body (110) that is arranged horizontally, and a supporter (120) that is coupled to the main body (110) and to which the drive assembly (200) is assembled.

The above supporter (120) is assembled on the upper side of the main body (110).

The above driving assembly (200) is coupled to the main body (110) and includes an electric motor (210) operated by an applied power source, a screwdriver (220) coupled to the electric motor (210) and rotated, and an actuator (230) engaged with the screwdriver (220) and moved in a straight line along the screwdriver (220) when the screwdriver (220) rotates.

The above screwdriver (220) penetrates the main body (110) and is rotatably assembled with the supporter (120).

The above valve assembly includes a first valve assembly (400) and a second valve assembly (500).

The carrier assembly (300) is arranged on the upper side of the main body (110), is assembled with the actuator (230), and includes a core body (350) that moves together with the actuator (230), a main assembly member (340) that assembles the core body (350) and the actuator (230), a first assembly member (310) that is arranged on one side of the core body (350) and assembles the first valve assembly (400) and the core body (350), a second assembly member (320) that is arranged on the other side of the core body (350) and assembles the second valve assembly (500) and the core body (350), and a second assembly member (320) that is coupled to the core body (350) and is arranged to penetrate the main body (110). It includes a main load (360), a load guide (370) coupled to the main load (360), an elastic member (380) disposed between the load guide (370) and the main body (110) and elastically supporting the load guide (370) and the main body (110), a first carrier (430) intersectingly assembled with the first assembly member (310) and providing a linear driving force to the first valve assembly (400), and a second carrier (530) intersectingly assembled with the second assembly member (320) and providing a linear driving force to the second valve assembly (500).

In this embodiment, the main body (110) is formed in a triangular shape when viewed from the top, but can be changed to various shapes.

The above main body (110) includes a driver hole (111) through which the screwdriver (220) passes in the vertical direction, a main rod hole (112) through which the main rod (360) passes in the vertical direction, a first valve hole (113) through which the first valve assembly (400) passes in the vertical direction, and a second valve hole (114) through which the second valve assembly (500) passes in the vertical direction.

The main load hole (112) is arranged in a row in front of the driver hole (111), and the first valve hole (113), the main load hole (112), and the second valve hole (114) are arranged in a row in the left-right direction.

The first valve hole (113) is arranged on the left side of the main load hole (112), and the second valve hole (114) is arranged on the right side of the main load hole (112).

The above supporter (120) includes a supporter top (125) positioned opposite the upper surface of the main body (110), a first side supporter (121) bent downward from the left edge of the supporter top (125) and in close contact with the upper surface of the main body (110), a second side supporter (122) bent downward from the right edge of the supporter top (125) and in close contact with the upper surface of the main body (110), and a supporter hole (126) penetrating the supporter top (125) in the vertical direction and into which the upper end (220a) of the screwdriver (220) is rotatably inserted.

The above supporter (120) further includes a first side coupling portion (121a) that is bent to the left from the first side supporter (121) and fastened and connected with the main body (110), and a second side coupling portion (not shown) that is bent to the right from the first side supporter (121) and fastened and connected with the main body (110).

A supporter space (124) is formed between the first side supporter (121) and the second side supporter (122), and the actuator (230) is placed in the supporter space (124). The actuator (230) can move up and down along the supporter space (124).

Since the upper end (220a) of the screwdriver (220) is rotated while being fixed to the supporter (120), the lateral movement of the actuator (230) can be suppressed, and the precision of the vertical movement of the actuator (230) can be improved.

In particular, since the actuator (230) is placed in the supporter space (124), the supporter (120) can protect the actuator (230), reduce the risk of damage even when external force or impact occurs, and have the characteristic of ensuring operational reliability.

The above electric motor (210) is placed at the bottom of the main body (110), and specifically, is placed at the bottom of the driver hole (111).

The lower part of the above screwdriver (220) is assembled to the electric motor (210) and rotates, and the upper part is rotatably inserted into the supporter hole (126).

When the above electric motor (210) rotates, the screwdriver (220) can be rotated in place. The actuator (230) is engaged with the screwdriver (220), and when the screwdriver (220) rotates, the actuator (230) can be moved linearly in the up-and-down direction.

A tooth shape is formed on the outer surface of the above screwdriver (220).

The above actuator (230) includes an outer actuator (232) that is assembled with the core body (350) and has an outer penetration hole (231) formed through which the screwdriver (220) passes in the vertical direction, an inner actuator (234) that is assembled to the outer actuator (232) and has an inner penetration hole (233) formed through which the screwdriver (220) passes in the vertical direction, and an actuator assembly part (235) that protrudes forward from the outer actuator (232) and is assembled with the carrier assembly (300).

A screw thread is formed on the inner surface of the inner penetration hole (233), engages with the teeth of the screwdriver (220), and converts the rotational motion of the screwdriver (220) into linear motion.

A mating hole (not shown) through which a screwdriver (220) passes in the vertical direction is formed, and a tooth shape that meshes with the screwdriver (220) can be formed on the inner surface.

The above core body (350) is integrally assembled with the actuator (230) through the main assembly member (340).

The above core body (350) is formed in an “ㅗ” shape when viewed from the top. The above core body (350) is formed of a solid metal material or synthetic resin material.

The above main assembly member (340), first assembly member (310), and second assembly member (320) are formed of a material capable of elastic deformation.

The core body (350) includes a first core groove (351) arranged on the left side and into which the first assembly member (310) is fitted, a second core groove (352) arranged on the right side and into which the second assembly member (320) is fitted, a main core groove (354) arranged on the rear side and into which the main assembly member (340) is fitted, and a core rod hole (355) through which the main rod (360) passes in the vertical direction.

The above first core home (351) is formed long in the front-back direction and is opened to the left.

The above second core home (352) is formed long in the front-back direction and is opened to the left.

The above main core home (354) is formed long in the horizontal direction and is opened toward the rear.

In this embodiment, for the convenience of assembling the first assembly member (310), the first core home (351) is opened in the front-back direction, for the convenience of assembling the second assembly member (320), the second core home (352) is opened in the front-back direction, and for the convenience of assembling the main assembly member (340), the main core home (354) is opened in the rear direction.

In this embodiment, the first core home (351) is formed in a cylindrical shape with the left side cut off, and the axis center of the cylinder is arranged in the front-back direction. The second core home (352) is formed in a cylindrical shape with the right side cut off, and the axis center of the cylinder is arranged in the front-back direction. The main core home (354) is formed in a cylindrical shape with the back side cut off, and the axis center of the cylinder is arranged in the front-back direction.

The above first assembly member (310), second assembly member (320), and main assembly member (340) are formed in a columnar shape.

A first assembly member groove (315) that is fit-fitted with the first valve assembly (400) is formed in the first assembly member (310), and the first assembly member groove (315) is positioned facing the left.

A second assembly member groove (325) is formed in the second assembly member (320) to be fitted with the second valve assembly (500), and the second assembly member groove (325) is positioned facing the right.

A main assembly member groove (345) that is fit-fitted with the actuator (230) is formed in the main assembly member (340), and the main assembly member groove (345) is positioned facing rearward.

The actuator assembly part (235) of the actuator (230) is fitted into the main assembly member home (345).

In this embodiment, the main body (110) is concavely shaped downward to form the main rod hole (112) and further includes a main body housing (115) through which the main rod (360) passes.

The above main body housing (115) is formed in a cylindrical shape and includes a first body housing part (115a) with upper and lower sides open, and a second body housing part (115b) forming the bottom surface of the first body housing part (115a).

A load bearing (390) is further placed inside the main body housing (115) to reduce friction by wrapping the main load (360). The load bearing (390) is inserted into the inside of the main body housing (115) and supported by the second body housing part (115b).

The upper opening surface of the above main body housing (115) forms the main rod hole (112). The second body housing portion (115b) further includes a body housing penetration hole (116) that penetrates in the vertical direction, and the main rod (360) is arranged to penetrate the body housing penetration hole (116).

A coil spring is used as the above elastic member (380).

The upper end of the above elastic member (380) is supported on the bottom surface of the second body housing part (115b).

The above load guide (370) includes a load guide housing (372) through which the main load (360) passes, and a load guide support part (374) formed to extend radially outward from the lower end of the load guide housing (372).

The lower end of the above elastic member (380) is supported on the load guide support member (374).

In order to prevent the above load guide (370) from moving along the main load (360), a load guide stopper (376) is further included, which is assembled to the lower side of the main load (360) and supports the load guide support member (374).

Therefore, the elastic member (380) has the characteristic of elastically supporting the main body housing (115) and the rod guide support member (374) and suppressing unintended up-and-down movement or vibration of the main rod (360), thereby improving the precision of flow control.

The above first valve assembly (400) includes a first valve housing (410) fixed to the main body (110), a first pintle (420) inserted into the first valve housing (410) to control the flow rate, and a first carrier (430) that connects the first pintle (420) and the carrier assembly (300).

The above first carrier (430) is fitted into the first assembly member groove (315) of the first assembly member (310).

The first carrier (430) includes a first carrier body part (432) through which the first pintle (420) is arranged to pass through in a vertical direction, a first carrier assembly part (435) that protrudes horizontally from the first carrier body part (432) and is fitted into the first assembly part groove (315) of the first assembly part (310), and a first carrier hole (434) that is formed to pass through the first carrier body part (432) in a vertical direction and into which the first pintle (420) is inserted.

The above first carrier (430) is formed of a solid material and is coupled to the first assembly member (310) to transmit displacement resulting from the up-and-down movement of the core body (350) to the first pintle (420).

If the first assembly member (310) is formed of a material with no elasticity or extremely low elasticity, a problem may occur in which the first pintle (420) forms a mutual interference with the first valve housing (410) and the operation stops due to manufacturing errors, assembly errors, thermal deformation, or when the axis of the first pintle (420) is twisted during operation.

In this embodiment, the first assembly member (310) formed of an elastic material can compensate for the difference in relative displacement or relative rotation between the core body (350) and the first carrier (430), thereby suppressing the axis of the first pintle (420) from being twisted.

When high pressure is formed inside the first valve housing (410) while the first pintle (420) is moved to the maximum, a force is generated on the first pintle (420) to move out of the first valve housing (410), and accordingly, a moment is generated at the bottom of the screwdriver (220), which may cause the screwdriver (220) to be damaged.

To prevent this, the screwdriver (220) can be supported by the supporter (120) to prevent damage to the screwdriver (220).

The first pintle (420) includes a first pintle body part (422) that is arranged to penetrate the first carrier body part (432) in the vertical direction, and a first flow rate control part (424) that is formed pointedly at the lower end of the first pintle body part (422) and is inserted into the first valve housing (410) to control the flow rate.

The above first pintle body part (422) is formed in an overall cylindrical shape.

The above first flow control unit (424) is formed in a cone shape with a pointed lower side.

In this embodiment, in order to secure the first pintle body part (422) to the first carrier body part (432), a first lower pintle nut (426) that is screw-connected with the first pintle body part (422) and comes into close contact with the lower surface of the first carrier body part (432), and a first upper pintle nut (428) that is screw-connected with the first pintle body part (422) and comes into close contact with the upper surface of the first carrier body part (432) are further included.

The first valve housing (410) includes a first valve body (415) coupled to the lower surface of the main body (110), a first fluid regulating hollow (411) formed so as to be concave downward from the upper surface of the first valve body (415) and having a cross-section that narrows downwardly, and in which the first pintle (420) moves up and down to vary the internal cross-section, a first fluid supply hole (412) formed on the outer surface of the first valve body (415) so as to be in communication with the first fluid regulating hollow (411) and through which fluid is supplied, and a first fluid discharge hollow (413) formed so as to be concave upward from the lower surface and having a cross-section that narrows upwardly, and through which fluid is discharged.

A first neck (414) is formed between the first fluid control cavity (411) and the first fluid discharge cavity (413). The first neck (414) forms the minimum cross-sectional area of the first fluid control cavity (411) and the first fluid discharge cavity (413).

The lower part of the first fluid control cavity (411) is formed in a truncated cone shape whose cross-section narrows toward the first neck (414), and the upper part of the first fluid discharge cavity (413) is formed in a truncated cone shape whose cross-section narrows toward the first neck (414).

The cross-sectional area of the first neck (414) is formed smaller than the cross-sectional area of the first flow control unit (424), and the first flow control unit (424) can close the first neck (414).

The first valve assembly (400) further includes a first valve cover (440) that is inserted into the first fluid control hollow (411) through the first valve hole (113), is supported by the main body (110), and has the first pintle (420) positioned so as to penetrate therethrough, a first upper bushing (450) that is positioned to surround the outer surface of the first pintle (420) and is in close contact with the upper side of the first valve cover (440), and a first lower bushing (460) that is positioned to surround the outer surface of the first pintle (420) and is in close contact with the lower side of the first valve cover (440).

The above first valve cover (440) is formed of an elastic material.

The first valve cover (440) includes a first valve cover body part (442) that is inserted and fixed into the first valve hole (113) and has a first valve cover hole (441) formed in the center through which the first pintle (420) penetrates, a first valve cover support part (444) that is formed to extend radially outward from the upper end of the first valve cover body part (442) and is supported on the upper surface of the main body (110), and a first valve cover contact part (445) that protrudes radially inward from the inner surface of the first valve cover body part (442) and is in close contact with the inner surface of the first pintle (420).

The above first upper bush (450) can be inserted into the upper side of the first valve cover hole (441) and supported by the first valve cover contact portion (445).

A first upper support ring (452) may be further placed in the first valve cover hole (441) to prevent the first upper bushing (450) from being detached, and the first upper support ring (452) may be fitted onto the inner surface of the first valve cover hole (441).

The above first lower bushing (460) can be inserted into the lower side of the first valve cover hole (441) and supported by the first valve cover contact portion (445).

A first lower support ring (462) may be further placed in the first valve cover hole (441) to prevent the first lower bushing (460) from coming off, and the first lower support ring (462) may be fitted onto the inner surface of the first valve cover hole (441).

Through the above-described structure, even if the first pintle (420) moves in a straight line, leakage of fluid can be suppressed.

The above second valve assembly (500) has the same configuration as the above first valve assembly (400).

The second valve assembly (500) includes a second valve housing (510) fixed to the main body (110), a second pintle (520) inserted into the second valve housing (510) to control the flow rate, and a second carrier (530) that connects the second pintle (520) and the carrier assembly (300).

The above second carrier (530) is fitted into the second assembly member groove (325) of the second assembly member (320).

The second carrier (530) includes a second carrier body part (532) through which the second pintle (520) is positioned to pass vertically, a second carrier assembly part (535) that protrudes horizontally from the second carrier body part (532) and is fitted into the second assembly part groove (325) of the second assembly part (320), and a second carrier hole (534) that is formed to pass vertically through the second carrier body part (532) and into which the second pintle (520) is inserted.

The second carrier (530) is formed of a solid material and is coupled to the second assembly member (320) to transmit displacement resulting from the up-and-down movement of the core body (350) to the second pintle (520).

If the second assembly member (320) is formed of a material with no elasticity or extremely low elasticity, a problem may occur in which the second pintle (520) forms a mutual interference with the second valve housing (510) and the operation stops due to manufacturing errors, assembly errors, thermal deformation, or when the axis of the second pintle (520) is twisted during operation.

In this embodiment, the second assembly member (320) formed of an elastic material can compensate for the difference in relative displacement or relative rotation between the core body (350) and the second carrier (530), thereby suppressing the axis of the second pintle (520) from being twisted.

When high pressure is formed inside the second valve housing (510) while the second pintle (520) is moved to the maximum, a force is generated to cause the second pintle (520) to move out of the second valve housing (510), and accordingly, a moment is generated at the bottom of the screwdriver (220), which may cause the screwdriver (220) to be damaged.

To prevent this, the screwdriver (220) can be supported by the supporter (120) to prevent damage to the screwdriver (220).

The second pintle (520) includes a second pintle body part (522) that is arranged to penetrate the second carrier body part (532) in the vertical direction, and a second flow rate control part (524) that is formed pointedly at the lower end of the second pintle body part (522) and is inserted into the second valve housing (510) to control the flow rate.

The above second pintle body part (522) is formed in an overall cylindrical shape.

The above second flow control unit (524) is formed in a cone shape with a pointed lower side.

In this embodiment, in order to secure the second pintle body part (522) to the second carrier body part (532), a second lower pintle nut (526) that is screw-connected with the second pintle body part (522) and comes into close contact with the lower surface of the second carrier body part (532), and a second upper pintle nut (528) that is screw-connected with the second pintle body part (522) and comes into close contact with the upper surface of the second carrier body part (532) are further included.

The second valve housing (510) includes a second valve body (515) coupled to the lower surface of the main body (110), a second fluid regulating hollow (511) formed so as to be concave downward from the upper surface of the second valve body (515) and having a cross-section that narrows downwardly, and in which the second pintle (520) moves up and down to vary the internal cross-section, a second fluid supply hole (512) formed on the outer surface of the second valve body (515) so as to be in communication with the second fluid regulating hollow (511) and through which fluid is supplied, and a second fluid discharge hollow (513) formed so as to be concave upward from the lower surface and having a cross-section that narrows upwardly, and through which fluid is discharged.

A second neck (514) is formed between the second fluid control cavity (511) and the second fluid discharge cavity (513). The second neck (514) forms the minimum cross-sectional area of the second fluid control cavity (511) and the second fluid discharge cavity (513).

The lower part of the second fluid control cavity (511) is formed in a truncated cone shape whose cross-section narrows toward the second neck (514), and the upper part of the second fluid discharge cavity (513) is formed in a truncated cone shape whose cross-section narrows toward the second neck (514).

The cross-sectional area of the second neck (514) is formed smaller than the cross-sectional area of the second flow control unit (524), and the second flow control unit (524) can close the second neck (514).

The second valve assembly (500) further includes a second valve cover (540) that is inserted into the second fluid control hollow (511) through the second valve hole (114), is supported by the main body (110), and has the second pintle (520) positioned so as to penetrate therethrough, a second upper bushing (550) that is positioned to surround the outer surface of the second pintle (520) and is in close contact with the upper side of the second valve cover (540), and a second lower bushing (560) that is positioned to surround the outer surface of the second pintle (520) and is in close contact with the lower side of the second valve cover (540).

The above second valve cover (540) is formed of an elastic material.

The second valve cover (540) includes a second valve cover body part (542) that is inserted and fixed into the second valve hole (114) and has a second valve cover hole (541) formed in the center through which the second pintle (520) penetrates, a second valve cover support part (544) that is formed to extend radially outward from the upper end of the second valve cover body part (542) and is supported on the upper surface of the main body (110), and a second valve cover contact part (545) that protrudes radially inward from the inner surface of the second valve cover body part (542) and is in close contact with the inner surface of the second pintle (520).

The above second upper bush (550) can be inserted into the upper side of the second valve cover hole (541) and supported by the second valve cover contact portion (545).

A second upper support ring (552) may be further placed in the second valve cover hole (541) to prevent the second upper bushing (550) from coming off, and the second upper support ring (552) may be fitted onto the inner surface of the second valve cover hole (541).

The above second lower bushing (560) can be inserted into the lower side of the second valve cover hole (541) and supported by the second valve cover contact portion (545).

A second lower support ring (562) may be further placed in the second valve cover hole (541) to prevent the second lower bushing (560) from coming off, and the second lower support ring (562) may be fitted onto the inner surface of the second valve cover hole (541).

Through the above-described structure, even if the second pintle (520) moves in a straight line, leakage of fluid can be suppressed.

The multi-flow control electric valve for a launch vehicle according to the present embodiment has the feature of minimizing the load in a weight-critical device such as a launch vehicle, an aircraft, or a space probe because it can control two valve assemblies simultaneously through one motor.

In particular, the multi-flow control electric valve for a launch vehicle according to the present embodiment has the characteristic of improving operational reliability because it can compensate for the axis of each pintle in a plurality of valve assemblies spaced apart from the carrier assembly (300) by elastic deformation of the assembly members.

FIG. 14 is a perspective view of a multi-flow control electric valve for a launch vehicle according to a second embodiment of the present invention.

A multi-flow control electric valve for a launch vehicle according to the present embodiment comprises a body assembly (100), a drive assembly (200) coupled to the body assembly (100) and generating a linear stroke, a carrier assembly (300) coupled to the drive assembly (200) and moving linearly, and a first valve assembly (400), a second valve assembly (500), and a third valve assembly (600) coupled to the body assembly (100) and having an opening value adjusted according to the movement of the carrier assembly (300).

Since the configuration of the above third valve assembly (600) is similar to that of the first valve assembly (400) or the second valve assembly (500), a detailed description is omitted.

In this embodiment, the third valve assembly (600) is assembled in front of the core body (350), and the third pintle of the third valve assembly (600) moves up and down according to the up and down stroke of the core body (350) to control the flow rate.

Since the remaining configuration is similar to the first embodiment, a detailed description is omitted.

Although the detailed description of the present invention has described specific embodiments, it is obvious that various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the scope of the claims described below, but also by equivalents of the scope of the claims.

100 : Body Assembly
200 : Drive Assembly
300 : Carrier Assembly
400: 1st valve assembly
500: 2nd valve assembly
600: 3rd valve assembly

Claims (10)

In an electric valve for a projectile,
Body assembly (100);
A driving assembly (200) coupled to the above body assembly (100) and generating a straight stroke;
A carrier assembly (300) that is coupled with the above driving assembly (200) and moves in a straight line;
It includes a plurality of valve assemblies, which are coupled to the above body assembly (100) and whose opening value is adjusted according to the movement of the carrier assembly (300);
The above valve assembly includes a first valve assembly (400) and a second valve assembly (500).
The first valve assembly (400) is arranged on the left side of the carrier assembly (300) and on the right side of the second valve assembly (500), and when the carrier assembly (300) operates, the first valve assembly (400) and the second valve assembly (500) are simultaneously controlled.
The above body assembly (100) is
It includes a main body (110) that is arranged horizontally, and a supporter (120) that is coupled to the main body (110) and to which the driving assembly (200) is assembled.
The above driving assembly (200) is
It includes an electric motor (210) coupled to the main body (110) and operated by an authorized power source, a screwdriver (220) coupled to the electric motor (210) and rotated, and an actuator (230) engaged with the screwdriver (220) and moved in a straight line along the screwdriver (220) when the screwdriver (220) rotates.
The above carrier assembly (300) is
A core body (350) arranged on the upper side of the main body (110), assembled with the actuator (230), and moved together with the actuator (230), a main assembly member (340) that assembles the core body (350) and the actuator (230), a first assembly member (310) arranged on one side of the core body (350) and that assembles the first valve assembly (400) and the core body (350), a second assembly member (320) arranged on the other side of the core body (350) and that assembles the second valve assembly (500) and the core body (350), a main rod (360) that is coupled to the core body (350) and is arranged to penetrate the main body (110), and It includes a load guide (370) coupled to a main load (360), an elastic member (380) disposed between the load guide (370) and the main body (110) and elastically supporting the load guide (370) and the main body (110), a first carrier (430) intersectingly assembled with the first assembly member (310) and providing a linear driving force to the first valve assembly (400), and a second carrier (530) intersectingly assembled with the second assembly member (320) and providing a linear driving force to the second valve assembly (500).
The core body (350) includes a first core groove (351) arranged on the left side and into which the first assembly member (310) is fitted, a second core groove (352) arranged on the right side and into which the second assembly member (320) is fitted, a main core groove (354) arranged on the rear side and into which the main assembly member (340) is fitted, and a core rod hole (355) through which the main rod (360) passes in the vertical direction.
The above first core home (351) is formed long in the front-back direction and is opened to the left,
The above second core home (352) is formed long in the front-back direction and is opened to the left,
The above main core home (354) is formed long in the horizontal direction and is opened toward the rear,
The above first valve assembly (400) includes a first valve housing (410) fixed to the main body (110), a first pintle (420) inserted into the first valve housing (410) to control the flow rate, and a first carrier (430) that connects the first pintle (420) and the carrier assembly (300).
The second valve assembly (500) includes a second valve housing (510) fixed to the main body (110), a second pintle (520) inserted into the second valve housing (510) to control the flow rate, and a second carrier (530) that connects the second pintle (520) and the carrier assembly (300).
The above main assembly member (340), the first assembly member (310) and the second assembly member (320) are formed of an elastic material,
A first assembly member groove (315) is formed in the first assembly member (310) to be fitted with the first valve assembly (400), and the first assembly member groove (315) is positioned facing the left side.
A second assembly member groove (325) is formed in the second assembly member (320) to be fitted with the second valve assembly (500), and the second assembly member groove (325) is positioned facing the right side.
The above first carrier (430) is,
The first carrier body part (432) through which the first pintle (420) is arranged to penetrate in the vertical direction, the first carrier assembly part (435) that protrudes horizontally from the first carrier body part (432) and is fitted into the first assembly part groove (315) of the first assembly part (310), and the first carrier hole (434) that is formed to penetrate the first carrier body part (432) in the vertical direction and into which the first pintle (420) is inserted,
The above second carrier (530) is,
The second carrier body part (532) through which the second pintle (520) is arranged to penetrate in the vertical direction, the second carrier assembly part (535) that protrudes horizontally from the second carrier body part (532) and is fitted into the second assembly part groove (325) of the second assembly part (320), and the second carrier hole (534) that is formed to penetrate the second carrier body part (532) in the vertical direction and into which the second pintle (520) is inserted,
The first assembly member (310) formed of an elastic material can compensate for the difference according to the relative displacement or relative rotation of the core body (350) and the first carrier (430), thereby preventing the axis of the first pintle (420) from being twisted.
A multi-flow control electric valve for a launch vehicle, wherein the second assembly member (320) formed of an elastic material can compensate for the difference according to the relative displacement or relative rotation of the core body (350) and the second carrier (530), thereby preventing the axis of the second pintle (520) from being twisted.
delete delete In claim 1,
A multi-flow control electric valve for a projectile in which the screwdriver (220) penetrates the main body (110) and is rotatably assembled with the supporter (120).
delete delete In claim 4,
The above main body (110) is
A multi-flow control electric valve for a launch vehicle, comprising a driver hole (111) through which the screwdriver (220) penetrates in the vertical direction, a main rod hole (112) through which the main rod (360) penetrates in the vertical direction, a first valve hole (113) through which the first valve assembly (400) penetrates in the vertical direction, and a second valve hole (114) through which the second valve assembly (500) penetrates in the vertical direction.
In claim 7,
The above actuator (230) is
A multi-flow control electric valve for a launch vehicle, comprising: an outer actuator (232) assembled with the core body (350) and having an outer penetration hole (231) formed through which the screwdriver (220) penetrates in the vertical direction; an inner actuator (234) assembled to the outer actuator (232) and having an inner penetration hole (233) formed through which the screwdriver (220) penetrates in the vertical direction; and an actuator assembly (235) protruding forward from the outer actuator (232) and assembled with the carrier assembly (300).
delete delete

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