Standpipe gas valve with load cell

Abstract

This application discloses a riser gas valve with a pressure measuring mechanism, including a valve body, a pressure measuring seat, a valve core, and a pressure measuring connector. The pressure measuring connector includes a valve core and a connector connecting the valve core. The valve core is detachably connected to an outlet groove. The valve core has a mounting groove with an opening on one side and an air passage connecting the mounting groove and the outlet groove. One end of the connector is connected to the mounting groove and has an outlet channel connecting to the air passage. The connector includes an installation section and a connecting section. The installation section is housed in the mounting groove, and a limiting surface is provided between the installation section and the connecting section. A limiting groove is formed on the inner wall of the mounting groove, and a retaining spring is provided in the limiting groove, which abuts against the limiting surface. By providing a mounting groove for connector connection through the valve core, and by limiting the axial displacement of the connector relative to the valve core through the retaining spring, and by combining the contact between the first sealing ring and the mounting groove, the sealing performance between the connector and the valve core is improved, and the connection stability between the valve core and the connector is further improved.

Description

Technical Field

[0001] This application relates to the technical field of gas valves, and in particular to a riser gas valve with a pressure measuring mechanism. Background Technology

[0002] Gas valves are used on gas pipelines to open and close the flow of gas within the pipeline. To facilitate the detection of gas pressure within the pipeline, existing gas valves often incorporate a gas pressure measuring structure. For example, the invention patent CN101354097B discloses a "gas valve with a pressure measuring device," which has a pressure measuring device installed on the outside of the inlet pipe. The pressure measuring device includes a valve body and a valve core installed within the valve body. The connection between the inlet pipe and the valve body is achieved by opening and closing the valve core. When the valve core is opened, the pressure measuring operation can be performed.

[0003] When pressure testing is not required, the aforementioned gas valve isolates the valve core from the outside environment through a sealing cap connected to the valve body, preventing accidental operation and improving safety. However, for pressure testing, the sealing cap must be unscrewed, and a pressure testing connector connected to the valve body is used to connect to an external pressure testing instrument. The existing pressure testing connector structure is as follows: Figure 1 As shown, the device includes a connecting sleeve 10, a valve core 41, and an external connector 30. The connecting sleeve 10 has a detection groove 101 with one end open. The valve core 41 is partially housed in the detection groove 101 and one end extends out of the detection groove 101. The external connector 30 is connected to one end of the valve core 41 by a threaded connection to fix the connecting sleeve 10, the valve core 41, and the external connector 30.

[0004] When the pressure testing connector is connected to the valve body, the connecting sleeve 10 has an internal thread, which allows for axial sliding through the threaded connection with the valve body. After descending for a period of time, the end of the valve core 41 presses against the valve core and eventually opens it. At this time, the gas in the intake pipe enters the detection groove 101 through the valve body and enters the outlet channel 423 of the outer connector 30 through the intake hole 201 on the valve core 41. To improve the sealing of the pressure test, a sealing ring 20 is fitted on the end of the valve core 41. As the valve core descends and presses against the valve core, the sealing ring 20 presses against the bottom surface of the valve body to achieve a seal. In the above-mentioned gas valve pressure testing connector, since the outer connector 30 is a threaded connection, anyone can easily tighten it. The valve core 41 is fixed by the contact between the outer connector 30 and the connecting sleeve 10. When the outer connector 30 is loose, the valve core 41 will have space to move relative to the connecting sleeve 10, reducing the sealing between the two and affecting the pressure testing accuracy. Utility Model Content

[0005] To prevent misoperation of the connector from reducing the sealing performance of the entire pressure testing connector, this application provides a riser gas valve with a pressure testing mechanism.

[0006] The riser gas valve with a pressure measuring mechanism provided in this application adopts the following technical solution:

[0007] A riser gas valve with a pressure measuring mechanism includes a valve body, the valve body having an inlet pipe, the inlet pipe having a pressure measuring port, and further includes:

[0008] A pressure measuring base, one end of which is connected to a pressure measuring port, the pressure measuring base having a connected air outlet section and an air outlet groove;

[0009] Valve core, installed in the outlet section, is used to open and close the connection between the intake manifold and the outlet slot; and

[0010] A pressure testing connector, comprising a valve core and a connector for connecting the valve core, wherein the valve core is detachably connected to an outlet groove, the valve core having an installation groove with an opening on one side and an air passage connecting the installation groove and the outlet groove, and one end of the connector being connected to the installation groove and having an outlet channel connecting the air passage.

[0011] The connector includes an installation section and a connecting section. The installation section is housed in an installation groove and a limiting surface is provided between the installation section and the connecting section. The installation groove has a limiting groove on its inner wall, and a retaining spring is provided in the limiting groove, which abuts against the limiting surface.

[0012] By adopting the above technical solution, one end of the connector is housed in the mounting groove of the valve core. The mounting groove is connected to a retaining ring via a defined limiting groove. The retaining ring abuts against the limiting surface of the connector, thereby limiting the relative axial movement between the connector and the valve core and further improving the connection strength between the connector and the valve core. The circumferential rotation of the connector relative to the valve core does not affect the sealing performance between the valve core and the connector. Secondly, the connection method between the connector and the valve core eliminates the need for a connecting sleeve, reducing the number of components, lowering costs, and simplifying the structure.

[0013] Preferably, the mounting section has at least one first annular groove on its outer peripheral wall, and a first sealing ring is disposed in the first annular groove, the first sealing ring abutting against the inner wall of the mounting groove.

[0014] By adopting the above technical solution, the setting of the first sealing ring improves the sealing performance between the valve core and the connector. Secondly, the setting of the first sealing ring can further improve the connection strength between the valve core and the connector, and reduce the possibility of circumferential rotation between the connector and the valve core.

[0015] Preferably, the vent groove includes a connected threaded section and a first sealing section; the valve core includes a threaded portion and a sealing portion, the threaded portion being threadedly connected to the threaded section, and the sealing portion being connected to the first sealing section; wherein, the valve core further includes a sealing boss placed between the threaded portion and the sealing portion, the first sealing section having a sealing surface, and when the threaded portion and the threaded section are connected to the limit position, the sealing boss abuts against the sealing surface.

[0016] By adopting the above technical solution, the threaded connection between the threaded part and the threaded section achieves the first sealing effect while the valve core is connected to the pressure measuring seat. The connection and cooperation between the sealing part and the first sealing surface section achieves the second sealing effect. The contact between the sealing boss and the sealing surface achieves the third sealing effect, effectively ensuring the sealing performance during the pressure measurement process.

[0017] Preferably, the sealing part has at least one second annular groove on its outer peripheral surface, and a second sealing ring is disposed in the second annular groove, the second sealing ring abutting against the inner wall of the first sealing section.

[0018] By adopting the above technical solution, the second sealing ring is inserted into the second annular groove, which facilitates the installation of the second sealing ring. The contact between the second sealing ring and the first sealing section provides a second sealing effect. Furthermore, the opening of the second annular groove limits the axial deformation of the second sealing ring, allowing the second sealing ring to achieve effective sealing through better radial compression.

[0019] Preferably, the valve core further includes a limiting part connected to one end of the threaded part. The limiting part has a slot on its end face that connects to the air hole. When the threaded part and the threaded section are connected to the limit position, the end of the limiting part abuts against the bottom of the air outlet groove. The slot and the bottom of the air outlet groove form a sealed cavity, and one end of the valve core abuts against the slot.

[0020] By adopting the above technical solution, when the valve core is connected to the pressure measuring seat, according to the transmission form of the threaded connection, the valve core changes from circumferential rotation to axial propulsion. When the end of the valve core squeezes the valve of the valve core, the valve core opens. At this time, the intake pipe connects to the outlet groove through the outlet section. The position of the groove can accommodate the end of the valve. When the end of the limiting part abuts against the bottom of the outlet groove, it plays a sealing role. The resulting sealed cavity can effectively receive the gas brought in by the intake pipe, thus improving the accuracy of pressure measurement.

[0021] Preferably, the air outlet groove further includes a second sealing section that connects to the threaded section, and the limiting part has at least one third annular groove on its outer peripheral surface. A third sealing ring is provided in the third annular groove, and the third sealing ring abuts against the inner wall of the second sealing section.

[0022] By adopting the above technical solution, the contact between the third sealing ring and the second sealing section provides a fourth sealing effect, further improving the sealing effect between the valve core and the pressure testing seat.

[0023] Preferably, it further includes a plug that is detachably connected to the pressure measuring seat, one end of the plug being threaded into the air outlet groove; wherein, the plug includes a protrusion, and the protrusion and the inner wall of the air outlet groove are spaced to form an irregular groove.

[0024] By adopting the above technical solution, when pressure measurement is not required, the plug is connected to the pressure measuring seat to cover the valve core, and the plug and the inner wall of the air outlet groove form an irregular groove, which can be used with special tools to rotate the plug, effectively preventing accidental removal of the plug and leaving the valve core in the outside.

[0025] Preferably, it also includes a dust cover that snaps onto the air outlet groove. The dust cover includes a cover body and a retaining ring extending outward from one end of the cover body. The retaining ring can snap into the air outlet groove.

[0026] By adopting the above technical solution, the dust cover can effectively reduce the entry of external impurities into the air outlet.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The valve core is provided with a mounting groove for the connector to connect. The snap ring limits the axial displacement of the connector relative to the valve core. At the same time, the first sealing ring and the mounting groove abut against each other, which improves the sealing between the connector and the valve core and further improves the connection stability between the valve core and the connector.

[0029] 2. By connecting the external thread on the sealing section of the valve core with the threaded section of the pressure measuring seat, combined with the contact between the sealing boss and the limiting surface, the second sealing ring and the third sealing ring, a multi-seal combination between the valve core and the pressure measuring seat is achieved, ensuring the sealing performance during the pressure measurement process and improving the pressure measurement effect.

[0030] 3. By setting a plug in combination with a dust cover, the valve core can be shielded when pressure testing is not required, and the dust cover effectively reduces the entry of impurities into the outlet groove, thus improving the safety of use. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of a pressure testing connector in the prior art;

[0032] Figure 2 A schematic diagram of a riser gas valve with a pressure measuring mechanism;

[0033] Figure 3 This diagram mainly shows the exploded view of the connection between the pressure testing connector and the pressure testing base;

[0034] Figure 4 This diagram mainly illustrates the connection between the plug and the pressure testing seat of the riser gas valve when the pressure is not being measured.

[0035] Explanation of reference numerals in the attached drawings: 1. Valve body; 11. Inlet pipe; 12. Pressure test port; 13. Inlet passage; 2. Pressure test seat; 21. Outlet section; 22. Threaded section; 23. First sealing section; 231. Sealing surface; 24. Second sealing section; 3. Valve core; 4. Pressure test connector; 41. Valve core; 411. Threaded part; 412. Sealing part; 413. Limiting part; 4131. Groove; 414. Mounting groove; 415. Limiting groove; 416. Sealing boss; 417. Air passage hole; 418. Second annular groove; 419. Third annular groove; 42. Connector; 421. Mounting section; 422. Connecting section; 423. Air outlet passage; 424. First annular groove; 43. Snap ring; 44. First sealing ring; 45. Second sealing ring; 46. Third sealing ring; 5. Plug; 51. Protrusion; 52. Irregular groove; 6. Dust cover; 61. Cover body; 62. Snap ring; 10. Connecting sleeve; 101. Detection groove; 20. Sealing ring; 30. External connector; 401. Air inlet. Detailed Implementation

[0036] The present application will be further described in detail below with reference to the accompanying drawings.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] Figure 2 and Figure 3 A riser gas valve structure with a pressure measuring mechanism is shown. The gas valve can be any type such as a ball valve, gate valve, or butterfly valve. It includes a valve body 1, which has an air inlet pipe 11. The air inlet pipe 11 has an air inlet channel 13 and a pressure measuring port 12 that connects to the air inlet channel 13. The pressure measuring port 12 is opened on the pipe wall of the air inlet pipe 11 and is radially connected to the air inlet channel 13. The pressure measuring mechanism is provided on the pressure measuring port 12.

[0040] The pressure testing mechanism includes a pressure testing base 2, a pressure testing connector 4, and a valve core 3. One end of the pressure testing base 2 is detachably connected to the pressure testing port 12. In this embodiment, the pressure testing base 2 and the pressure testing port 12 are connected by a threaded connection. Of course, the pressure testing base 2 can also be integrally formed with the intake pipe 11. The pressure testing base 2 has a connected outlet section 21 and an outlet groove. The valve core 3 is installed in the outlet section 21, and the outlet section 21 is used to connect the outlet groove and the intake channel 13. The valve core 3 is used to open and close the connection between the intake channel 13 and the outlet groove.

[0041] The pressure testing connector 4 includes a valve core 41 and a connected connector 42. One end of the valve core 41 has a mounting groove 414 with an opening on one side, and the other end has a slot 4131 facing the valve core 3. The slot 4131 and the mounting groove 414 are connected by at least one air passage 417. The connector 42 includes an integral mounting section 421 and a connecting section 422. The mounting section 421 is fitted into the mounting groove 414, and the mounting section 421 has at least one first annular groove 424 on its outer peripheral wall. In this embodiment, two first annular grooves 424 are spaced apart along the axial direction of the mounting section 421. A first sealing ring 44 is provided in the first annular groove 424, and the first sealing ring 44 abuts against the groove wall of the mounting groove 414.

[0042] The connecting section 422 of the connector 42 extends from the mounting groove 414 and is used to connect to an external pressure testing hose. The connection between the connecting section 422 and the mounting section 421 is stepped, forming a limiting surface at the end face of the mounting section 421. The mounting groove 414 has a limiting groove 415 at the opening position, and a retaining spring 43 is engaged in the limiting groove 415. One end face of the retaining spring 43 abuts against the limiting surface, thereby limiting the relative axial movement between the connector 42 and the valve core 41.

[0043] The outer peripheral wall of the valve core 41 is stepped, including a limiting part 413, a threaded part 411, and a sealing part 412, which are sequentially located away from the side of the groove 4131. The vent groove includes a second sealing section 24, a threaded section 22, and a first sealing section 23, which are sequentially connected from the bottom of the groove outward. The threaded part 411 is threadedly connected to the threaded section 22, the sealing part 412 is connected to the first sealing section 23, and the limiting part 413 is connected to the second sealing section 24.

[0044] The valve core 41 has at least one second annular groove 418 on the sealing part 412, and a second sealing ring 45 is disposed in the second annular groove 418; the valve core 41 has at least one third annular groove 419 on the limiting part 413, and a third sealing ring 46 is disposed in the third annular groove 419. A sealing boss 416 is also provided between the threaded part 411 and the sealing part 412. The sealing boss 416 and the threaded part 411 are stepped. The threaded section 22 of the pressure measuring seat 2 and the first sealing section 23 are also stepped, and a sealing surface 231 is formed at the end face of the first section. The limit position of the valve core 41 within the pressure measuring seat 2 is defined as the position where the end face of the limiting part 413 abuts against the bottom of the air outlet groove. When the valve core 41 is in the limit position, the sealing boss 416 abuts against the sealing surface 231. At this time, the valve core 41 can no longer move axially to one side relative to the pressure measuring seat 2. At the same time, the second sealing ring 45 abuts against the first sealing section 23, and the third sealing ring 46 abuts against the second sealing section 24. The slot 4131 and the bottom of the air outlet groove form a sealing cavity, and the valve end of the valve core 3 is placed in the sealing cavity. In addition, the valve core 41 also has an air passage 417 that connects the slot 4131 and the mounting slot 414, and the connector 42 has an air outlet channel 423 that connects the air passage 417. Thus, when the valve core 41 squeezes the valve of the valve core 3 and gradually opens the valve core 3, the gas can enter the air outlet channel 423 through the slot 4131 and the air passage 417 to realize the pressure measurement operation.

[0045] See Figure 4 The riser gas valve also includes a plug 5 and a dust cover 6. One end of the plug 5 is detachably connected to the gas outlet groove. In this embodiment, the plug 5 is threadedly connected to the threaded section 22 of the gas outlet groove. The end of the plug 5 away from the valve core 3 has a protrusion 51. There is a gap between the protrusion 51 and the groove wall of the gas outlet groove to form an irregular groove 52. The irregular groove 52 can be engaged with a special tool to rotate the plug 5. Thus, when the riser gas valve does not require pressure measurement, the plug 5 shields the valve core 3, and the plug 5 cannot be rotated without the use of a special tool, thus achieving a protective effect.

[0046] The dust cover 6 and the pressure measuring base 2 are also detachably connected. In this embodiment, the dust cover 6 and the air outlet groove of the pressure measuring base 2 are connected by a snap-fit. The dust cover 6 includes an integral cover body 61 and a retaining ring 62 extending from one end face of the cover body 61 toward the air outlet groove. The retaining ring 62 is snapped into the opening of the air outlet groove. The cover body 61 covers the opening of the air outlet groove and also covers the plug 5, which can effectively reduce the entry of external impurities into the air outlet groove.

[0047] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A riser gas valve with a pressure measuring mechanism, comprising a valve body (1), the valve body (1) having an air inlet pipe (11), the air inlet pipe (11) having a pressure measuring port (12), characterized in that, Also includes: Pressure measuring base (2), one end of which is connected to pressure measuring port (12), the pressure measuring base (2) has a connected air outlet section (21) and an air outlet groove; Valve core (3), installed in the outlet section (21), is used to open and close the connection between the intake pipe (11) and the outlet slot; and The pressure testing connector (4) includes a valve core (41) and a connector (42) connecting the valve core (41). The valve core (41) is detachably connected to the air outlet groove. The valve core (41) has a mounting groove (414) with an opening on one side and an air passage (417) connecting the mounting groove (414) and the air outlet groove. One end of the connector (42) is connected to the mounting groove (414) and the connector (42) has an air outlet channel (423) connecting the air passage (417). The connector (42) includes an installation section (421) and a connecting section (422). The installation section (421) is housed in an installation groove (414) and a limiting surface is provided between the installation section (421) and the connecting section (422). The installation groove (414) has a limiting groove (415) on its inner wall. A retaining ring (43) is provided in the limiting groove (415) and the retaining ring (43) abuts against the limiting surface.

2. The riser gas valve with a pressure measuring mechanism according to claim 1, characterized in that, The mounting section (421) has at least one first annular groove (424) on its outer peripheral wall. A first sealing ring (44) is provided in the first annular groove (424) and the first sealing ring (44) abuts against the inner wall of the mounting groove (414).

3. The riser gas valve with a pressure measuring mechanism according to claim 1, characterized in that, The vent groove includes a connected threaded section (22) and a first sealing section (23); the valve core (41) includes a threaded portion (411) and a sealing portion (412), the threaded portion (411) is threadedly connected to the threaded section (22), and the sealing portion (412) is connected to the first sealing section (23); wherein, the valve core (41) further includes a sealing boss (416) placed between the threaded portion (411) and the sealing portion (412), the first sealing section (23) has a sealing surface (231), and when the threaded portion (411) and the threaded section (22) are connected to the limit position, the sealing boss (416) abuts against the sealing surface (231).

4. The riser gas valve with a pressure measuring mechanism according to claim 3, characterized in that, The sealing part (412) has at least one second annular groove (418) on its outer peripheral surface. A second sealing ring (45) is provided in the second annular groove (418) and the second sealing ring (45) abuts against the inner wall of the first sealing section (23).

5. The riser gas valve with a pressure measuring mechanism according to claim 3, characterized in that, The valve core (41) also includes a limiting part (413) connected to one end of the threaded part (411). The limiting part (413) has a slot (4131) on its end face that connects to the air hole (417). When the threaded part (411) and the threaded section (22) are connected to the limit position, the end of the limiting part (413) abuts against the bottom of the air outlet groove. The slot (4131) and the bottom of the air outlet groove form a sealed cavity. One end of the valve core (3) abuts against the slot (4131).

6. The riser gas valve with a pressure measuring mechanism according to claim 5, characterized in that, The vent groove also includes a second sealing section (24) that connects to the threaded section (22). The limiting part (413) has at least one third annular groove (419) on its outer peripheral surface. A third sealing ring (46) is provided in the third annular groove (419) and the third sealing ring (46) abuts against the inner wall of the second sealing section (24).

7. The riser gas valve with a pressure measuring mechanism according to claim 1, characterized in that, It also includes a plug (5) that is detachably connected to the pressure measuring seat (2), one end of which is threaded into the air outlet groove; wherein the plug (5) includes a protrusion (51), and the protrusion (51) and the inner wall of the air outlet groove have a gap to form an irregular groove (52).

8. The riser gas valve with a pressure measuring mechanism according to claim 7, characterized in that, It also includes a dust cover (6) that snaps onto the air outlet groove. The dust cover (6) includes a cover body (61) and a retaining ring (62) extending outward from one end of the cover body (61). The retaining ring (62) can be snapped into the air outlet groove.

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