Air tightness testing device for fuel gas pressure regulating valve
By designing a gas pressure regulating valve airtightness testing device that includes a test chamber, a liquid pump, and a gas pump, and utilizing the combination of pure water and gas media, the problem of difficulty in determining the leak point in gas pressure regulating valve airtightness testing is solved, enabling accurate leak point location and improving testing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-03-17
AI Technical Summary
In existing gas pressure regulating valve airtightness testing, it is impossible to determine the specific leak point, resulting in low detection efficiency.
An airtightness testing device was designed, comprising a test chamber, a liquid pump, a gas pump, a media chamber, and conduits. By using pure water and pure gas media in combination, bubbles are used to indicate the location of leaks, thus narrowing down the search area.
It enables airtightness testing of gas pressure regulating valves, accurately locates leaks, and improves detection efficiency.
Smart Images
Figure CN224004595U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of airtightness testing devices, and more specifically, to an airtightness testing device for a gas pressure regulating valve. Background Technology
[0002] A gas pressure regulating valve is a device used to regulate and control gas pressure. It is mainly used in gas supply systems to ensure that the gas maintains a stable pressure during transportation and use. In order to ensure that it does not leak during use, thereby ensuring production safety and normal equipment operation, it is necessary to conduct an airtightness test.
[0003] Existing gas pressure regulating valves mostly use direct pressure and differential pressure methods for air tightness testing. However, when air tightness defects are detected during the testing process, there is a problem that the specific leak point cannot be determined, resulting in a large range of leak points to be found and affecting testing efficiency.
[0004] Based on this, an airtightness testing device for gas pressure regulating valves is proposed. Summary of the Invention
[0005] The main objective of this invention is to provide an airtightness testing device for a gas pressure regulating valve, so as to overcome the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides an airtightness testing device for a gas pressure regulating valve, comprising a test chamber, a first medium chamber and a second medium chamber respectively opened on the lower two sides of the inner surface of the test chamber, a liquid pump and a gas pump respectively fixedly installed on the middle of the two sides of the outer surface of the test chamber, an adapter pipe inserted through the upper part of both sides of the outer surface of the test chamber, and a connecting pipe movably installed in the middle of the inner surface of the test chamber, one end of the connecting pipe is fixedly provided with a docking plate, the other end of the connecting pipe is fixedly provided with a corrugated hose, and the other end of the corrugated hose is connected to the adapter pipe provided near the second medium chamber.
[0007] The upper surface of the test chamber is covered with a sealing cover, and a tray is fixedly installed at the four corners of the lower surface of the sealing cover. A workbench is fixedly installed on the side of the tray near the upper surface of the first medium chamber, and a sealing plate is fixedly installed on the side of the workbench near the upper surface of the first medium chamber.
[0008] As a further improvement of this utility model, a discharge port is provided on the lower part of the inner surface of the side away from each other between the first medium chamber and the second medium chamber, and a sealing nut is spirally inserted into the inner surface of the discharge port of both the first medium chamber and the second medium chamber.
[0009] As a further improvement of this utility model, a fixing frame is fixedly installed on the middle of the outer surface of both the liquid pump and the gas pump, and the fixing frame is fixedly connected to the test box.
[0010] As a further improvement of this utility model, both the liquid pump and the gas pump have conduits fixedly installed at their ports. One end of the conduit at the liquid pump port is inserted into the first medium chamber, and the other end of the conduit at the liquid pump port is connected to a transfer pipe provided on one side of the outer surface of the test chamber. One end of the conduit at the gas pump port is inserted into the second medium chamber, and the other end of the conduit at the gas pump port is connected to a transfer pipe provided on the other side of the outer surface of the test chamber.
[0011] As a further improvement of this utility model, the sealing cover and the outer surface of the test box are both fixedly and symmetrically provided with fixing plates, and electric support rods are fixedly installed on the outer surfaces of the fixing plates that are close to each other.
[0012] As a further improvement of this utility model, the upper surface of the tray is provided with several through holes, and a bracket is fixedly provided in the middle of the upper surface of the workbench. A guide rod is provided on the lower part of the side of the bracket away from the outer surface of the closed plate. A support ring is movably sleeved on the outer surface of the guide rod, and the inner ring surface of the support ring is in contact with the outer surface of the connecting pipe.
[0013] The beneficial effects of this utility model are:
[0014] This invention can perform airtightness testing on gas regulating valves and display the leak points of airtightness defects, thereby avoiding the problem of not being able to determine the specific leak point when an airtightness defect is detected. This helps to narrow down the search range for airtightness leaks and further improves testing efficiency. Attached Figure Description
[0015] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:
[0016] Figure 1 This is a front three-dimensional structural diagram of the present invention;
[0017] Figure 2 This is a cross-sectional schematic diagram of the present invention;
[0018] Figure 3 This is a cross-sectional view of the test box of this utility model.
[0019] Figure 4 This is a sectional view of the sealing cap of this utility model.
[0020] In the diagram: 1. Test chamber; 101. First medium chamber; 102. Second medium chamber; 103. Sealing nut; 2. Liquid pump; 3. Gas pump; 4. Fixing frame; 5. Conduit; 6. Adaptor pipe; 7. Connecting pipe; 701. Connecting plate; 702. Corrugated hose; 8. Sealing cap; 801. Fixing plate; 802. Support plate; 9. Electric support rod; 10. Workbench; 1001. Enclosed plate; 1002. Bracket; 1003. Guide rod; 1004. Support ring. Detailed Implementation
[0021] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.
[0022] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0023] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0024] To make the objectives and advantages of this utility model clearer, the utility model will be further described below with reference to the embodiments; it should be understood that the specific embodiments described herein are merely for explaining this utility model and are not intended to limit this utility model.
[0025] Please see Figures 1-4As shown, an airtightness testing device for a gas pressure regulating valve includes a test chamber 1. A first medium chamber 101 and a second medium chamber 102 are respectively opened on the lower two sides of the inner surface of the test chamber 1. A discharge port is opened on the lower part of the inner surface of the first medium chamber 101 and the second medium chamber 102 on the side away from each other. A sealing nut 103 is screwed into the inner surface of the discharge port of both the first medium chamber 101 and the second medium chamber 102.
[0026] It should be noted that the test chamber 1 is made of glass so that the test process can be viewed through the chamber. The first medium chamber 101 is used to store the pure water medium for the test, and the second medium chamber 102 stores the pure gas medium for the test. The medium stored in the first medium chamber 101 and the second medium chamber 102 can be added and discharged when the sealing nut 103 is opened to expose the discharge port. Using pure water and pure gas medium for airtightness testing can avoid damage to the gas pressure regulating valve.
[0027] A liquid pump 2 and a gas pump 3 are fixedly installed on the middle of both sides of the outer surface of the test chamber 1. A fixing frame 4 is fixedly installed on the middle of the outer surface of both the liquid pump 2 and the gas pump 3. The fixing frame 4 is fixedly connected to the test chamber 1. A transfer pipe 6 is inserted through the upper part of both sides of the outer surface of the test chamber 1. A conduit 5 is fixedly installed at the port of both the liquid pump 2 and the gas pump 3. One end of the conduit 5 at the port of the liquid pump 2 is inserted into the first medium chamber 101, and the other end of the conduit 5 at the port of the liquid pump 2 is connected to the transfer pipe 6 on one side of the outer surface of the test chamber 1. One end of the conduit 5 at the port of the gas pump 3 is inserted into the second medium chamber 102, and the other end of the conduit 5 at the port of the gas pump 3 is connected to the transfer pipe 6 on the other side of the outer surface of the test chamber 1.
[0028] It should be noted that the connection between the adapter pipe 6 and the test chamber 1 is sealed to prevent the pure water medium stored in the first medium chamber 101 from entering the test chamber 1 and causing leakage. The test medium in the first medium chamber 101 and the second medium chamber 102 are introduced into the test chamber 1 by the liquid pump 2 and the gas pump 3 in conjunction with the conduit 5. At the same time, the gas pump 3 can control the pressure of the pure gas medium input to achieve the test effect of the gas pressure regulating valve by using different gas pressures.
[0029] A connecting pipe 7 is movably installed in the middle of the inner surface of the test chamber 1. One end of the connecting pipe 7 is fixedly provided with a docking plate 701, and the other end of the connecting pipe 7 is fixedly provided with a corrugated hose 702. The other end of the corrugated hose 702 is connected to a transfer pipe 6 provided near the side of the second medium chamber 102.
[0030] It should be noted that by sealing the connection between the docking plate 701 and one of the ports of the gas pressure regulating valve, the pure gas medium in the second medium chamber 102 can flow through the corrugated hose 702 and the docking pipe 7 into the gas pressure regulating valve. The corrugated hose 702 has a foldable and telescopic structure to ensure that the docking plate 701 remains connected to the gas pressure regulating valve when the position of the gas pressure regulating valve moves.
[0031] The upper surface of the test chamber 1 is covered with a sealing cover 8. The sealing cover 8 and the two sides of the outer surface of the test chamber 1 are obliquely and symmetrically fixed with fixing plates 801. The outer surfaces of the fixing plates 801 that are close to each other are fixedly fixed with electric support rods 9. The four corners of the lower surface of the sealing cover 8 are fixedly fixed with support plates 802. The upper surface of the support plates 802 is provided with several through holes. The side of the support plate 802 that is close to the upper surface of the first medium chamber 101 is fixedly fixed with a workbench 10. The side of the workbench 10 that is close to the upper surface of the first medium chamber 101 is fixedly fixed with a closed plate 1001.
[0032] It should be noted that the other port of the gas pressure regulating valve is sealed and connected to the sealing plate 1001, and is stably placed on the bracket 1002 to complete the test installation. At this time, the electric support rod 9 is controlled to drive the sealing cover 8 to descend and cover the upper surface of the test chamber 1, thereby controlling the bracket 802 to drive the gas pressure regulating valve to sink in the test chamber 1. At this time, the pure water medium entering the test chamber 1 can cover the gas pressure regulating valve through the through hole opened in the bracket 802. Under this condition, the pure gas medium can be entered into the gas pressure regulating valve. If there is an airtightness defect, bubbles will be generated in the pure water medium covering the gas pressure regulating valve. The location of the airtightness leak can be found by the point of bubble generation, thus narrowing the detection range.
[0033] A bracket 1002 is fixedly provided in the middle of the upper surface of the workbench 10. A guide rod 1003 protrudes from the lower part of the outer surface of the bracket 1002 away from the closed plate 1001. A support ring 1004 is movably sleeved on the outer surface of the guide rod 1003. The inner ring surface of the support ring 1004 is in contact with the outer surface of the connecting pipe 7.
[0034] In use, this invention first uses a liquid pump 2 and a conduit 5 to input the liquid medium from the first medium chamber 101 into the test chamber 1. When the liquid medium in the test chamber 1 is more than half full, the input is stopped and the gas pressure regulating valve is installed. One port of the gas pressure regulating valve is sealed and connected to the sealing plate 1001 and placed stably on the bracket 1002 to complete the test installation. At the same time, the connecting plate 701 is sealed and connected to the other port of the gas pressure regulating valve. At this time, the electric support rod 9 is controlled to drive the sealing cover 8 to descend and cover the upper surface of the test chamber 1, thereby controlling the bracket 802 to drive the gas pressure regulating valve to sink in the test chamber 1. At this time, the pure water medium input into the test chamber 1 can cover the gas pressure regulating valve through the through hole opened in the bracket 802. Under these circumstances, the gas pump 3 is started with the conduit 5 and the connecting pipe 7 to input the gas medium into the gas pressure regulating valve. If the gas pressure regulating valve has an airtightness defect, bubbles will be generated in the liquid medium covering the gas pressure regulating valve. The location of the airtightness leak of the gas pressure regulating valve can be found by the point of bubble generation, thus narrowing the detection range.
[0035] The above are merely embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.
Claims
1. A gas tightness testing device for a gas pressure regulating valve, comprising a testing box (1), first and second medium storages (101, 102) are respectively arranged on the lower sides of the inner surface of the testing box (1), characterized in that, The both sides of the outer surface of the test box (1) are respectively fixedly provided with a liquid pump (2) and a gas pump (3), the upper portions of the both sides of the outer surface of the test box (1) are both provided with an adapter pipe (6), the inner surface of the middle portion of the test box (1) is movably provided with a butt joint pipe (7), one end of the butt joint pipe (7) is fixedly provided with a butt joint disc (701), the other end of the butt joint pipe (7) is fixedly provided with a corrugated hose (702), the other end of the corrugated hose (702) is communicated with the adapter pipe (6) arranged on the side close to the second medium bin (102). The upper surface of the test box (1) is covered and fixedly provided with a sealing cover (8), the lower surface of the sealing cover (8) is fixedly provided with a supporting plate (802) at four corners, the upper surface of the supporting plate (802) close to the first medium bin (101) is fixedly provided with a workbench (10), and the upper surface of the workbench (10) close to the first medium bin (101) is fixedly provided with a closing disc (1001).
2. A gas tightness testing device for a gas pressure regulating valve according to claim 1, characterized in that, The inner surface of the lower portion of the side away from the first medium bin (101) and the second medium bin (102) is both provided with a discharge port, and the first medium bin (101) and the second medium bin (102) are both provided with a blocking nut (103) which is spirally inserted and fixedly arranged on the inner surface of the discharge port.
3. A gas tightness testing device for a gas pressure regulating valve according to claim 1, wherein The middle portion of the outer surface of the liquid pump (2) and the gas pump (3) is fixedly provided with a fixing frame (4), and the fixing frame (4) is fixedly connected with the test box (1).
4. The air tightness testing device for a gas pressure regulating valve according to claim 1, wherein The port of the liquid pump (2) and the gas pump (3) is fixedly provided with a guide pipe (5), one end of the guide pipe (5) arranged at the port of the liquid pump (2) is inserted into the first medium bin (101), the other end of the guide pipe (5) arranged at the port of the liquid pump (2) is communicated with the adapter pipe (6) arranged on the side of the outer surface of the test box (1), one end of the guide pipe (5) arranged at the port of the gas pump (3) is inserted into the second medium bin (102), and the other end of the guide pipe (5) arranged at the port of the gas pump (3) is communicated with the adapter pipe (6) arranged on the other side of the outer surface of the test box (1).
5. The air tightness testing device for a gas pressure regulating valve according to claim 1, wherein The both sides of the outer surface of the sealing cover (8) and the test box (1) are fixedly provided with a fixing plate (801) in an oblique and symmetrical manner, and the outer surfaces of the fixing plates (801) close to each other are fixedly provided with an electric supporting rod (9).
6. A gas tightness testing device for a gas pressure regulating valve according to claim 1, wherein The upper surface of the supporting plate (802) is provided with a plurality of through holes, the upper surface of the workbench (10) is fixedly provided with a bracket (1002) in the middle portion, the outer surface of the bracket (1002) away from the closing disc (1001) is protrudingly provided with a guide rod (1003) in the lower portion, the outer surface of the guide rod (1003) is movably provided with a supporting ring (1004), and the inner annular surface of the supporting ring (1004) is in contact with the outer surface of the butt joint pipe (7).