CN220206924U - Pressure taking pipe of gas meter - Google Patents

Abstract

The utility model provides a gas meter pressure taking pipe which comprises a pipe body and a pressure taking plug, wherein a hollow cavity is formed in the pipe body, internal threads are formed in the inner wall of the hollow cavity, the pressure taking plug comprises a fixing head and an inserting head, external threads matched with the internal threads are formed in the outer wall of the inserting head, a penetrating round hole is formed in the inserting head, a groove is formed between the inserting head and the fixing head, an O-shaped sealing ring is sleeved on the surface of the groove, a chamfer groove is formed in the inner wall of one end, close to the outside, of the hollow cavity, a connecting thread is formed in the outer wall of one end, far away from the chamfer groove, of the pipe body, the inserting head is mutually matched with the external threads through the internal threads and is fixed in the hollow cavity, the sealing ring is attached to the chamfer groove to seal the hollow cavity, a pressure taking hole is formed in one end, far away from the chamfer groove, and the pressure taking hole is communicated with the hollow cavity. The utility model can enhance the sealing performance and improve the accuracy of the air pressure detection result.

Description

A gas meter pressure pipe

Technical field

The utility model belongs to the technical field of gas meter equipment, and in particular relates to a gas meter pressure pipe.

Background technique

Pressure pipes are used to measure the pressure at a certain point in the pipeline for transporting fluids. They are widely used in petrochemical companies. During the transportation of oil, natural gas, etc., it is necessary to collect pressure information from various parts of the pipeline in time to monitor the working conditions of the fluid transported in the pipeline in a timely manner.

Most of the currently produced and used diaphragm gas meters do not come with a pressure measuring device. Since the diaphragm gas meter itself does not have a pressure measuring device, there is no way to detect whether the pipeline pressure meets the requirements. However, the current pressure measuring device is not tightly sealed and can easily lead to inaccurate measurement results.

Utility model content

In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a gas meter pressure-taking pipe to solve the problem in the prior art that the gas meter pressure-taking pipe is not tightly sealed and results in inaccurate air pressure detection results.

In order to achieve the above purpose and other related purposes, the utility model provides a gas meter pressure-taking pipe, which includes a pipe body and a pressure-taking plug. A hollow cavity is provided inside the pipe body, and an internal thread is provided on the inner wall of the hollow cavity. The pressure-taking plug includes a fixed head and a plug joint. The outer wall of the plug joint is provided with external threads that match the internal threads. The plug joint is provided with a through hole, and the connection between the plug joint and the fixed head is There are grooves between them, and an O-ring is set on the surface of the groove. A chamfered groove is provided on the inner wall of one end of the hollow cavity close to the outside. A connection is provided on the outer wall of the end of the tube body away from the chamfered groove. Threads, the plug joint matches each other through the internal threads and the external threads to be inserted and fixed in the hollow cavity, and the sealing ring and the chamfer groove fit together to perform inspection on the hollow cavity. For sealing, a pressure hole is installed on one end of the tube body away from the chamfer groove, and the pressure hole is connected to the hollow cavity.

In one embodiment of the present invention, the chamfer groove has a trapezoidal cross-section, and the fixing head has an external hexagonal shape.

In an embodiment of the present invention, the diameter of the pressure hole is less than 1 mm.

In one embodiment of the present invention, the hollow cavity includes a first channel and a second channel that are electrically connected, the first channel is electrically connected to the pressure hole, and the second channel is electrically connected to the pressure hole. The chamfer groove is conductive, the internal thread is provided on the inner wall of the second channel, and the second channel matches the size of the plug connector.

In one embodiment of the present invention, an annular groove is provided on the surface of one end of the fixing head close to the pipe body, a rubber pad is provided on the surface of the annular groove, and the inside of the rubber pad is a hollow structure.

As mentioned above, the gas meter pressure pipe according to the present invention has the following beneficial effects:

By setting internal threads inside the pipe body, they match the external threads on the outside of the plug connector of the pressure plug, so that the pressure plug and the pipe body are threaded together, and the chamfer grooves and sealing rings cooperate with each other to achieve sealing, effectively The sealing performance of the entire pressure pipe is improved, and after the plug joint is inserted into the pipe body, the rubber pad is squeezed, further improving the sealing effect.

Description of drawings

Figure 1 shows a schematic structural diagram of the gas meter pressure pipe of the present invention.

Figure 2 shows a schematic structural diagram of the pipe body in the gas meter pressure pipe of the present invention.

Figure 3 shows a schematic structural diagram of the pressure-taking plug in the pressure-taking pipe of the gas meter according to the present invention.

Detailed ways

The following describes the implementation of the present invention through specific embodiments. Those familiar with this technology can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

It should be noted that the structures, proportions, sizes, etc. shown in the figures attached to this specification are only used to match the content disclosed in the specification and are for the understanding and reading of people familiar with this technology. They are not used to limit the implementation of the present invention. Therefore, it has no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size shall still fall within The technical content disclosed in this utility model must be within the scope that can be covered. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for convenience of description and are not used to limit the scope of this specification. As for the implementable scope of the utility model, changes or adjustments in the relative relationships shall also be regarded as the implementable scope of the utility model, provided there is no substantial change in the technical content.

See Figure 1 and Figure 2. The gas meter pressure pipe provided in this embodiment is provided with internal threads inside the pipe body to match the external threads outside the plug connector of the pressure plug, so that the pressure plug and the pipe body are threaded together and matched with the inverted The angle groove and the sealing ring cooperate with each other to achieve sealing, which effectively improves the sealing performance of the entire pressure pipe. After the plug joint is inserted into the pipe body, the rubber pad is squeezed, further improving the sealing effect.

As shown in Figure 1, in one embodiment, the utility model provides a gas meter pressure-taking pipe, which includes a pipe body 1 and a pressure-taking plug 2. A hollow cavity 11 is provided inside the pipe body 1. The inner wall of the cavity 11 is provided with internal threads 12. The pressure-taking plug 2 includes a fixed head 21 and a plug connector 22. The outer wall of the plug connector 22 is provided with an external thread 23 that matches the internal thread 12. The internal thread 23 of the plug connector 22 is A through hole 25 is provided, and a groove 24 is provided between the plug connector 22 and the fixed head 21. The surface of the groove 24 is covered with an O-ring 26, and the hollow cavity 11 is close to the external The inner wall of one end is provided with a chamfered groove 13, and the outer wall of the end of the pipe body 1 away from the chamfered groove 13 is provided with a connecting thread 3. The plug connector 22 is matched with each other through the internal thread 12 and the external thread 23. Insert and fix in the hollow cavity 11 , and the sealing ring 26 and the chamfered groove 13 fit together to seal the hollow cavity 11 , and the tube body 1 is away from the chamfered groove 13 A pressure hole 14 is installed at one end, and the pressure hole 14 is in communication with the hollow cavity 11 . An annular groove 4 is provided on the surface of one end of the fixed head 21 close to the pipe body 1. A rubber pad 5 is provided on the surface of the annular groove 4. The inside of the rubber pad 5 is a hollow structure.

In this embodiment, since the hollow cavity 11 in the pipe body 1 is provided with an internal thread 12, the plug connector 22 of the pressure plug 2 is used to cooperate with the internal thread 12 through the external thread 23, so that the plug connector 22 of the pressure plug 2 is It is fixedly connected inside the hollow cavity 11, so that after the O-shaped sealing ring 26 and the chamfered groove 13 are snapped together, a preliminary seal is achieved, and the O-shaped sealing ring 26 can fit more closely with the chamfered groove 13, making it less likely to create a gap. As the plug joint 22 is further rotated into the hollow cavity 11, the fixed head 21 exerts a squeezing effect on the rubber pad 5 inside the annular groove 4, thereby further sealing the fixed head 21 with the end of the pipe body 1, and the cooperative sealing Ring 26 achieves multi-level sealing, effectively improving sealing performance. When testing the air pressure, connect the connecting thread 3 at the end of the pipe body 1 to the gas meter, and then the gas enters the inside of the pipe body 1 from the pressure hole 14, and the air pressure detection can be realized.

In some embodiments, the chamfer groove 13 has a trapezoidal cross-section, and the fixing head 21 has an outer hexagonal shape, which facilitates the rotation of the fixing head 21 .

In some embodiments, the diameter of the pressure hole 14 is less than 1 mm. For example, the diameter of the pressure hole 14 is 0.5 mm.

In other embodiments, the hollow cavity 11 includes a first channel 15 and a second channel 16 that are electrically connected. The first channel 15 is electrically connected to the pressure hole 14 , and the second channel 16 Communicated with the chamfer groove 13 , the internal thread 12 is provided on the inner wall of the second channel 16 , and the second channel 16 matches the size of the plug connector 22 .

To sum up, the gas meter pressure pipe of the present invention is provided with an internal thread inside the pipe body to match the external thread outside the plug connector of the pressure plug, so that the pressure plug and the pipe body are threaded together. , and cooperate with the chamfer groove and sealing ring to achieve sealing, which effectively improves the sealing performance of the entire pressure pipe. After the plug joint is inserted into the inside of the pipe body, the rubber gasket is squeezed, further improving the sealing effect. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

The above embodiments are only illustrative of the principles and effects of the present invention, but are not intended to limit the present invention. Anyone familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims (5)

1. The utility model provides a gas table pressure taking pipe, its characterized in that includes body (1) and pressure taking stopper (2), body (1) inside is provided with hollow chamber (11), hollow chamber (11) inner wall is provided with internal thread (12), pressure taking stopper (2) are including fixed head (21) and grafting head (22), grafting head (22) outer wall be provided with external screw thread (23) that internal screw thread (12) match, be provided with in grafting head (22) run through round hole (25), just grafting head (22) with be provided with recess (24) between fixed head (21), recess (24) surface cover is equipped with O type sealing washer (26), hollow chamber (11) are close to outside one end inner wall be provided with chamfer groove (13), body (1) are kept away from chamfer groove (13) one end outer wall is provided with connecting thread (3), grafting head (22) are through internal thread (12) and external screw thread (23) match each other and fix hollow chamber (11) and hollow chamber (26) are kept away from chamfer groove (13) and are equipped with, hollow chamber (14) are kept away from together in chamfer groove (14), the pressure taking hole (14) is communicated with the hollow cavity (11).

2. The gas meter pressure taking pipe according to claim 1, wherein the cross section of the chamfer groove (13) is trapezoid, and the fixing head (21) is hexagonal.

3. The gas meter pressure take-off tube according to claim 2, wherein the pressure take-off hole (14) has a diameter of less than 1mm.

4. The gas meter pressure taking pipe according to claim 2, wherein the hollow cavity (11) comprises a first channel (15) and a second channel (16) which are connected in a conducting way, the first channel (15) is connected in a conducting way with the pressure taking hole (14), the second channel (16) is connected in a conducting way with the chamfer groove (13), the internal thread (12) is arranged on the inner wall of the second channel (16), and the second channel (16) is matched with the plug connector (22) in size.

5. The gas meter pressure taking pipe according to claim 1, wherein an annular groove (4) is formed in the surface of the fixing head (21) close to one end of the pipe body (1), a rubber pad (5) is arranged on the surface of the annular groove (4), and the rubber pad (5) is of a hollow structure.