Digital electric contact pressure gauge
Technical Field
The utility model relates to the technical field of pressure gauges, in particular to a digital electric contact pressure gauge.
Background
Pressure gauges are classified into pointer type and digital type, and are usually installed on a pipe for pressure measurement. At present, along with the increasing of the requirements of people on the precision of measurement, the prior art increasingly uses a digital pressure gauge with high precision, the digital pressure gauge shows the pressure value in a pipeline through digital display, a circuit board is arranged in the digital pressure gauge, and the voltage value detected by a sensor is subjected to analog-digital conversion and then is displayed through a liquid crystal display screen/LED nixie tube.
The authority of 2017, 07 and 04 days discloses an intelligent digital electric contact pressure gauge, the authority of which is CN206300741U, the intelligent digital electric contact pressure gauge comprises a metal shell, a main circuit board is installed at the central position of an inner cavity of the metal shell, a sensor component is installed at the left side of the main circuit board, a power panel and an output circuit board are respectively installed at the front side and the rear side of the main circuit board, a plastic upper cover is installed at the top of the metal shell, a metal pressing ring is installed at the top of the plastic upper cover, the metal shell is arranged on the shell, the pressing ring is a metal pressing ring, and the upper cover is a plastic upper cover.
The following drawbacks exist in the prior art:
1. In the prior art, the pressure sensing elements are arranged on the pressure connector, the pressure connector is arranged outside the outer shell of the pressure gauge, and meanwhile, the pressure sensing elements are required to be connected with the circuit board assembly inside the outer shell of the pressure gauge, so that the pressure connector is inconvenient to detach and replace when being replaced (the pressure sensing elements are required to be detached simultaneously during the detachment), and the use is influenced.
Disclosure of utility model
The utility model aims to provide a digital electric contact pressure gauge.
The utility model is realized by the following technical scheme.
The utility model provides a digit electricity contact manometer, includes the manometer casing, be provided with the mount pad in the manometer casing, the mounting groove has been seted up to the mount pad, the mounting groove is used for putting installation pressure sensing element, the mount pad lower extreme is provided with wears out the spliced pole of manometer casing, the spliced pole seted up with the first detection hole that the mounting groove is linked together for pressure sensing element response medium pressure.
As a further improvement of the utility model, the lower end of the connecting column is detachably provided with a pressure source connector, the pressure source connector is provided with a second detection hole, and the second detection hole is communicated with the first detection hole.
As a further improvement of the utility model, the lower end of the connecting column is provided with external threads, the upper end of the pressure source connector, which is positioned on the first detection hole, is provided with internal threads, and the pressure source connector are connected through threaded fit.
As a further improvement of the utility model, a sealing mounting groove is arranged at the lower end of the mounting seat around the periphery of the connecting column, and a first sealing ring is arranged in the sealing mounting groove.
The utility model further comprises a main circuit board arranged in the pressure meter shell, wherein a switch signal output circuit board and a voltage-stabilizing power supply circuit board are arranged on the lower side of the main circuit board, and the switch signal output circuit board and the voltage-stabilizing power supply circuit board are arranged in parallel and are limited with a preset distance for avoiding the mounting seat.
As a further improvement of the utility model, the lower end of the pressure source joint is provided with external threads.
As a further improvement of the utility model, a second sealing ring is arranged between the upper end of the pressure source connector and the pressure gauge shell.
As a further development of the utility model, the outer diameter of the pressure gauge housing is 50mm.
The pressure gauge has the beneficial effects that the mounting seat is arranged in the pressure gauge shell and is used for mounting the pressure sensing element, and meanwhile, the pressure gauge shell is penetrated out through the connecting column to be connected with the pressure source connector, so that the pressure source connector can be detached and replaced (the pressure sensing element is not replaced during detachment and replacement), and the pressure gauge is convenient to use.
Drawings
Preferred embodiments of the present utility model will be described in detail below with reference to the attached drawings, to facilitate understanding of the objects and advantages of the present utility model, wherein:
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
FIG. 2 is a schematic view of a mounting base according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of the internal structure of an embodiment of the present utility model;
In the figure, the reference numerals comprise a pressure gauge shell 1, a mounting seat 2, a mounting groove 3, a connecting column 4, a first detection hole 5, a pressure source connector 6, a second detection hole 7, a clamping groove 8, a connecting through groove 9, a connecting clamping block 10, a sealing mounting groove 11, a first sealing ring 12, a main circuit board 13, a switching signal output circuit board 14, a regulated power supply circuit board 15, a plastic upper cover 16, a PVC film 17, a metal pressing ring 18 and a second sealing ring 19.
Detailed Description
The utility model is described in further detail below with reference to the drawings and the examples.
The terms of orientation such as up, down, left, right, front, rear, front, back, top, bottom, etc. mentioned or possible in this specification are defined with respect to the configurations shown in the drawings, and the terms "inner" and "outer" refer to the relative concepts of the terms toward or away from the geometric center of a particular component, respectively, and thus may be changed accordingly depending on the location and use state of the component. These and other directional terms should not be construed as limiting terms.
Referring to fig. 1 to 3, disclosed are embodiments of the present utility model:
A digital electric contact pressure gauge comprises a pressure gauge shell 1, wherein an installation seat 2 is arranged in the pressure gauge shell 1, an installation groove 3 is formed in the installation seat 2, the installation groove 3 is used for placing an installation pressure sensing element, a connecting column 4 penetrating out of the pressure gauge shell 1 is arranged at the lower end of the installation seat 2, a first detection hole 5 communicated with the installation groove 3 is formed in the connecting column 4 so as to enable the pressure sensing element to sense medium pressure, a pressure source connector 6 is detachably arranged at the lower end of the connecting column 4, a second detection hole 7 is formed in the pressure source connector 6, the second detection hole 7 is communicated with the first detection hole 5, an installation seat 2 is arranged in the pressure gauge shell 1, and the installation seat 2 is used for installing the pressure sensing element (which is a product in the prior art and is not described herein), meanwhile, the pressure source connector 6 is connected through the connecting column 4 to enable the pressure source connector 6 to be detached and replaced conveniently, and meanwhile, when the first detection hole 7 is formed in the pressure gauge shell 1, the pressure source connector 6 is not communicated with the first detection hole 5.
In one embodiment (as shown in fig. 3), the lower end of the connecting column 4 is provided with an external thread, the pressure source connector 6 is located at the upper end of the first detecting hole 5 and is provided with an internal thread, the pressure source connector 6 and the pressure source connector 6 are connected through a threaded fit, and it is worth noting that the pressure source connector 6 provided with an internal thread is provided with an external thread at the lower end thereof, so as to facilitate connection with an external pressure source, the structure is the same as that of a pressure meter connector of a mechanical pressure meter existing in the market (for example, a 304 stainless steel internal-external wire conversion pressure meter connector with a specification of internal M20 x 1.5 and external ZG 3/8), therefore, the pressure source connector 6 of the digital electric pressure meter in the embodiment can be purchased directly from the market, and the pressure source connector of the mechanical pressure meter 4 is controlled to be connected in the internal thread switching part of the pressure meter connector of the mechanical pressure meter, i.e. the pressure source connector 6 of the mechanical pressure meter is applied to the digital electric pressure meter, so that the pressure source connector 6 in the embodiment can be replaced with the pressure meter in the market (for direct replacement of the mechanical pressure meter when the pressure meter is needed).
The mount pad 2 lower extreme is around spliced pole 4 week side is provided with sealed mounting groove 11, be provided with first sealing washer 12 in the sealed mounting groove 11, in this embodiment, mount pad 2 can dismantle set up in the manometer casing 1, its spliced pole 4 wears out manometer casing 1, first sealing washer 12 is located spliced pole 4 week side, simultaneously pressure source connects 6 upper end with be provided with second sealing washer 19 between the manometer casing 1 to realize sealed effect.
The pressure gauge comprises a pressure gauge shell 1, and is characterized by further comprising a main circuit board 13 arranged in the pressure gauge shell 1, wherein a switch signal output circuit board 14 and a voltage-stabilized power supply circuit board 15 are arranged on the lower side of the main circuit board 13, and the switch signal output circuit board 14 and the voltage-stabilized power supply circuit board 15 are mutually arranged in parallel and are limited with a preset interval so as to be used for avoiding the mounting seat 2; specifically, in this embodiment, a plastic upper cover 16 is further disposed on the main circuit board 13, a PVC film 17 is adhered on the plastic upper cover 16, the pressure gauge housing 1 is provided with a metal pressing ring 18, several are locked in the pressure gauge housing 1 by the metal pressing ring 18, a power supply (which may be a power supply disposed in the pressure gauge housing 1 or an external power supply), when the power supply is an external power supply, the side wall of the pressure gauge housing 1 is provided with a wire hole for a connection line to pass out, when the power supply is an internal power supply, the wire hole may be plugged by a plug to seal, and is connected with several of the main circuit board 13, the switch signal output circuit board 14, the voltage-stabilizing power circuit board 15 and the pressure sensing element mounted on the mounting seat 2, the connection structure between the several is a prior art means, and the embodiment is not improved, which is not described herein, in another embodiment, a controller connected with several elements of the pressure gauge housing 1 and a signal output controller are also disposed in the pressure gauge housing 1, and connected with the signal output controller and the signal output controller are connected with the signal output controller and the signal output controller in a signal receiving manner well known to the signal output controller and the signal output device, and will not be described here).
The lower end of the pressure source connector 6 is provided with external threads to facilitate connection to an external pressure source.
Further, in the present embodiment, the outer diameter of the pressure gauge housing is 50mm.
It should be noted that the above embodiments are merely for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some technical features may be equivalently replaced, and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present utility model.