CN209294436U - A Simple Manual Gate Valve - Google Patents

Abstract

The utility model provides a simple manual gate valve, which is used to conduct and cut off the fluid in the pipeline, comprising: a valve body with a pipeline pierced inside; a valve core including a valve stem and a bearing, and the valve stem has a cylindrical stepped structure And the pipeline in the valve body is vertically passed through, and the bearing is arranged between the valve core and the valve body to reduce the friction force of the valve core rotation. The valve stem is also equipped with a diameter hole for conducting and cutting off the fluid in the pipeline; It is fixedly connected with the valve stem. By turning the handwheel, the valve stem and the handwheel rotate synchronously; The valve cover is passed through the valve stem and resists the stepped end face of the valve stem, and is fixedly connected with the valve body through bolts. The shaft rotates, but cannot move axially relative to the valve body. Turn the hand wheel 90 degrees to cut off or pass the fluid in the pipeline.

Description

A Simple Manual Gate Valve

technical field

The utility model relates to the field of oil exploitation equipment, in particular to a manual gate valve used in the testing and production of low-pressure oil and gas wells.

Background technique

In oil extraction equipment, the gate valve is an important part of the Christmas tree and the choke and kill pipeline, which mainly plays the role of cutting off the fluid. Conventional gate valves are driven manually or hydraulically. Conventional gate valves drive the valve plate to switch valves by turning the valve stem. Since the valve stem and the valve plate are threaded, no matter whether the valve is opened or closed, the on-site operator has to turn the handwheel a lot. circle to achieve the goal. In on-site operation, it takes extra operating time, especially in the case of emergency closing or opening of the gate, the longer the on-site operation time, the greater the safety risk. Based on this situation, it is very necessary to develop and design a manual gate valve that reduces the switching time of the valve.

Utility model content

The utility model provides a simple manual gate valve. By setting a diameter hole on the valve stem of the gate valve, the fluid in the pipeline of the gate valve can be quickly cut off or conducted only by rotating the hand wheel by 90 degrees.

In order to achieve the above purpose, the utility model provides a simple manual gate valve for conducting and cutting off fluid, including:

The valve body is pierced with a cylindrical pipe, and there is fluid in the pipe; the valve body is also provided with a cylindrical valve body cavity; the valve body cavity is vertically pierced with the pipe;

The valve core includes a valve stem, the valve stem has a cylindrical structure and is provided with two steps; the first end of the valve stem is located outside the valve body; the second end of the valve stem is arranged in the valve body cavity and matches the valve body cavity; The second end of the valve stem is also provided with a diameter hole for conducting and cutting off the fluid in the pipeline;

The handwheel is fixedly connected to the first end of the valve stem, and by turning the handwheel, the torque of the external force is transmitted to the valve stem, so that the valve stem and the handwheel rotate synchronously;

The valve stem sleeve is arranged between the handwheel and the first end of the valve stem, and is fixedly connected with the handwheel and the first end of the valve stem, and transmits the torque of the external force from the handwheel to the valve stem;

The bonnet, through which the first end of the valve stem bears against the first stepped end surface and the second stepped end surface of the valve stem at the same time, is fixedly connected to the valve body through bolts, and through the connection of the bonnet to the valve stem and the valve body, The valve stem can rotate around its own central axis, but cannot move axially relative to the valve body.

The diameter of the through hole matches the diameter of the pipeline, and the central axis of the through hole and the central axis of the pipeline are located on the same horizontal plane.

The central axis of the bore hole intersects with the central axis of the valve stem.

The through hole forms two 90-degree arcs on the outer wall of the cross-section of the valve stem.

When the pipeline is fully connected, the handwheel drives the valve stem to rotate 90 degrees to completely cut off the fluid in the pipeline; when the pipeline is completely closed, the handwheel drives the valve stem to rotate 90 degrees to completely conduct the fluid in the pipeline.

The diameter of the pipe is the section radius of the second end of the valve stem times.

The valve core also includes a bearing. The bearing is arranged between the second end of the valve stem and the valve body, and is connected with the valve stem and the valve body. Through the bearing, the distance between the valve stem and the valve body is reduced when the valve stem rotates. friction between them.

The valve core also includes a plurality of sealing rings, the plurality of sealing rings are arranged between the valve stem and the valve body, and are sleeved on the valve stem at intervals, and the plurality of sealing rings prevent the valve body from Fluid leaks in.

The plurality of sealing rings are divided into two groups, with the passage holes as intervals, the first group of sealing rings are arranged above the passage holes, and the second group of sealing rings are arranged below the passage holes .

The manual gate valve also includes a bonnet gasket, the bonnet gasket is arranged between the bonnet and the valve body, and the secondary sealing of the bonnet to the valve stem is realized through the bonnet gasket.

Compared with the prior art, the gate valve of the utility model has the following advantages: compact structure, reliable form, fast and convenient installation and disassembly, easy operation and high efficiency, thereby ensuring the normal production of the oil field.

Description of drawings

In order to illustrate the technical solution of the utility model more clearly, the accompanying drawings that need to be used in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are an embodiment of the utility model. In terms of personnel, on the premise of not paying creative work, other drawings can also be obtained according to these drawings:

Fig. 1 is a schematic diagram of the structure of the manual gate valve of the present invention.

Fig. 2 is a schematic diagram of the internal structure of the manual gate valve of the present invention.

Fig. 3 is a structural schematic diagram of the valve core of the present invention.

Fig. 4 is a top view of the pipeline, the second end of the valve stem and the valve body cavity when the gate valve of the present invention is fully opened.

Fig. 5 is a top view of the pipeline, the second end of the valve stem, and the valve body cavity when the gate valve of the present invention is partially opened.

Fig. 6 is a top view of the pipeline, the second end of the valve stem and the valve body cavity when the gate valve of the present invention is fully closed.

In the figure: 1. Valve body; 2. Bearing; 3. Valve core; 4. Seal ring; 5. Valve cover gasket; 6. Valve cover; 7. Valve stem; 8. Valve stem cover; 9. Hand wheel; 10. Pipeline; 11. The first step; 12. The second step; 13. Locating pin; 14. The central axis of the bore; 15. The central axis of the valve stem; 16. The bore.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in Figure 1 and Figure 2, the utility model provides a simple manual gate valve for conducting and cutting off fluid, including:

The valve body 1 is provided with a cylindrical pipeline 10 inside, and there is fluid in the pipeline 10; a cylindrical valve body cavity is also provided inside the valve body 1; the valve body cavity is vertically penetrated with the pipeline 10;

The valve core 3 , as shown in FIG. 3 , includes a valve stem 7 , bearings 2 and several sealing rings 4 . The valve stem 7 is a cylindrical structure and is provided with two steps; the first end of the valve stem 7 is located outside the valve body 1; the second end of the valve stem 7 is arranged in the valve body cavity and matches the valve body cavity; the valve stem 7 The second end is also provided with a through hole 16 for conducting and shutting off the fluid in the pipeline 10 , as shown in FIG. 1 , the through hole 16 is within the range indicated by PQMN. The diameter of the through hole 16 matches the diameter of the pipe 10 , and the central axis 14 of the through hole is at the same level as the central axis of the pipe. As shown in FIG. 2 , the central axis 14 of the bore hole intersects with the central axis 15 of the valve stem. As shown in Fig. 4, Fig. 5 and Fig. 6, the through hole 16 forms two 90-degree arcs on the outer wall of the cross-section of the valve stem 7, arc AD and arc BC, ∠AOD=90°. As shown in Figure 1, the bearing 2 is arranged between the second end of the valve stem 7 and the valve body 1, and is connected with the valve stem 7 and the valve body 1, and the contact with the valve body when the valve stem 7 rotates is reduced by the bearing 2. 1 between friction. As shown in Figure 1, the plurality of sealing rings 4 are arranged between the valve stem 7 and the valve body 1, and are sleeved on the valve stem 7 at intervals, and the plurality of sealing rings 4 prevent the valve body from 1 Fluid leaks. In the application embodiment of the present utility model, there are four sealing rings 4, which are divided into two groups, two sealing rings 4 in the upper and lower groups, with the diameter hole 16 as the interval, and the first group of sealing rings 4 are located in the diameter hole. 16 , the second set of sealing rings 4 is located below the through hole 16 .

The handwheel 9, as shown in Figures 1 and 2, is fixedly connected to the first end of the valve stem 7, and by turning the handwheel 9, the torque of the external force is transmitted to the valve stem 7, so that the valve stem 7 is synchronized with the handwheel 9 Rotation; when the pipeline 10 is fully connected, the valve stem 7 is driven to rotate 90 degrees by the handwheel 9 to completely cut off the fluid in the pipeline 10; when the pipeline 10 is completely closed, the valve stem 7 is driven to rotate 90 degrees by the handwheel 9, The fluid in the pipeline 10 is fully communicated.

The stem sleeve 8, as shown in Figure 1 and Figure 2, is arranged between the handwheel 9 and the first end of the valve stem 7, and is fixed with the handwheel 9 and the first end of the valve stem 7 by a positioning pin 13 Connected to transmit the torque of the external force from the handwheel 9 to the valve stem 7;

The valve cover 6, as shown in Fig. 1 and Fig. 2, passes through the first end of the valve stem 7 while resisting the end face of the first step 11 and the end face of the second step 12 of the valve stem 7, and is connected with the valve body 1 by bolts. Fixed connection, through the connection of the valve cover 6 with the valve stem 7 and the valve body 1, the valve stem 7 can rotate around its own central axis, but cannot move axially relative to the valve body 1.

The manual gate valve, as shown in Figure 1, also includes a bonnet backing ring 5, the bonnet backing ring is arranged between the bonnet 6 and the valve body 1, through the bonnet backing ring 5 to realize the alignment of the bonnet 6 to the valve stem. 7 secondary sealing.

Fig. 4, Fig. 5 and Fig. 6 are top views of the pipeline 10, the second end of the valve stem 7, and the valve body cavity when the gate valve of the present invention is fully opened, partially opened and fully closed, respectively. As shown in Figure 6, DC is the diameter of the pipe, OC is the radius of the second end of the valve stem, since ∠COD=90°, so The diameter of the pipeline 10 is the second end section radius of the valve stem 7 times.

As shown in Figure 4, Figure 5 and Figure 6, the working principle of the present utility model is as follows:

S1. As shown in Figure 4, when the gate valve of the present invention is fully opened, the fluid flows in from the arc AD end of the bore 16 and flows out from the arc BC end, and the arc AB and arc CD are on the valve stem and in contact with the inner wall of the valve body cavity Contact, the line segments AB, CD represent the inner wall of the through hole;

S2. As shown in Figure 5, when the gate valve of the present invention is partially opened, the arc AA ₁ and arc CC ₁ sections of the bore 16 are respectively blocked by the inner wall of the valve body cavity, and the fluid cannot pass through the ends of the arc AA ₁ and arc CC ₁ , the fluid can only flow in from the arc A ₁ D end, and flow out from the arc BC ₁ end.

S3, as shown in Figure 6, only need to rotate the valve stem 7 by 90 degrees through the handwheel, no matter clockwise or counterclockwise, the gate valve of the present utility model can be changed from fully open to fully closed. The arc AD and arc BC ends of the diameter hole 16 are blocked by the valve body cavity, and fluid cannot pass through. The arc AB and arc DC ends on the valve stem block the pipeline 10, and the fluid in the pipeline 10 cannot be conducted.

Compared with the prior art, the gate valve designed by the utility model has compact structure, reliable form, fast and convenient installation and disassembly, and is easy to operate and efficient in operation, thereby ensuring the normal production of the oil field.

The above is only a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any person familiar with the technical field can easily think of various Equivalent modifications or replacements shall all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (10)

1. A simple manual gate valve for conducting and cutting off fluid, characterized in that it comprises: The valve body is pierced with a cylindrical pipe, and there is fluid in the pipe; the valve body is also provided with a cylindrical valve body cavity; the valve body cavity is vertically pierced with the pipe; The valve core includes a valve stem, the valve stem has a cylindrical structure and is provided with two steps; the first end of the valve stem is located outside the valve body; the second end of the valve stem is arranged in the valve body cavity and matches the valve body cavity; The second end of the valve stem is also provided with a diameter hole for conducting and cutting off the fluid in the pipeline; The handwheel is fixedly connected to the first end of the valve stem, and by turning the handwheel, the torque of the external force is transmitted to the valve stem, so that the valve stem and the handwheel rotate synchronously; The valve stem sleeve is arranged between the handwheel and the first end of the valve stem, and is fixedly connected with the handwheel and the first end of the valve stem, and transmits the torque of the external force from the handwheel to the valve stem; The bonnet, through which the first end of the valve stem bears against the first stepped end surface and the second stepped end surface of the valve stem at the same time, is fixedly connected to the valve body through bolts, and through the connection of the bonnet to the valve stem and the valve body, The valve stem can rotate around its own central axis, but cannot move axially relative to the valve body. 2. The manual gate valve according to claim 1, wherein the diameter of the through hole matches the diameter of the pipeline, and the central axis of the through hole and the central axis of the pipeline are located on the same horizontal plane. 3. The manual gate valve according to claim 1, characterized in that, the central axis of the through hole intersects with the central axis of the valve stem. 4. The manual gate valve according to claim 1, characterized in that, the through hole forms two 90-degree arcs on the outer wall of the cross-section of the valve stem. 5. The manual gate valve according to claim 1, characterized in that, when the pipeline is fully connected, the valve stem is driven to rotate 90 degrees by the handwheel to completely cut off the fluid in the pipeline; when the pipeline is completely closed, the valve stem is rotated by the handwheel Drive the valve stem to rotate 90 degrees to realize the complete conduction of the fluid in the pipeline. 6. The manual gate valve as claimed in claim 1, wherein the diameter of the pipeline is the radius of the section of the second end of the stem times. 7. The manual gate valve according to claim 1, wherein the valve core further comprises a bearing, the bearing is arranged between the second end of the valve stem and the valve body, and is connected with the valve stem and the valve body The connection, through the bearing, reduces the friction between the valve stem and the valve body when it rotates. 8. The manual gate valve according to claim 1, wherein the valve core further comprises a plurality of sealing rings, and the plurality of sealing rings are arranged between the valve stem and the valve body, and are sleeved at intervals On the valve stem, the fluid in the valve body is prevented from leaking through the plurality of sealing rings. 9. The manual gate valve as claimed in claim 8, wherein the plurality of sealing rings are divided into two groups, with the through holes as intervals, and the first group of sealing rings are arranged on the sides of the through holes. The upper part and the second group of sealing rings are arranged under the through hole. 10. The manual gate valve according to claim 1, further comprising a bonnet gasket, the bonnet gasket is arranged between the bonnet and the valve body, and the bonnet to the valve stem is realized through the bonnet gasket. Secondary seal.