A leak-proof connector for a gas meter

Abstract

This utility model relates to the field of gas equipment technology and discloses a leak-proof connector for a gas meter, including a gas meter body and a connecting connector. An insulating anti-loosening mechanism is fixedly connected to the inner side of the connecting connector of the gas meter body. A locking and fixing mechanism is fixedly connected to the top of the gas meter body, and an insulating connecting seat is fixedly connected to the top of the gas meter body. Multiple anti-loosening grooves are evenly distributed on the top of the insulating connecting seat. The insulating anti-loosening mechanism includes an outer core, the outer side of which is fixedly connected to the inner side of the connecting connector. In this utility model, through the cooperation of the outer core, the inner core, and the insulating rubber ring, the insulating rubber ring is squeezed and deformed to fill the gaps, blocking current conduction and enhancing airtightness. Furthermore, the multi-toothed anti-loosening ring moves downward under the action of the locking spring and mechanically engages with the anti-loosening grooves, effectively preventing the connecting connector from rotating due to vibration, significantly improving the sealing performance and connection stability of the gas meter connector.

Description

Technical Field

[0001] This utility model relates to the field of gas equipment technology, and in particular to a leak-proof connector for a gas meter. Background Technology

[0002] Gas is a clean and efficient energy source, commonly including natural gas and liquefied petroleum gas (LPG). A gas meter is a device that measures gas usage, recording consumption data to inform billing. It is widely used in homes, businesses, and industries. The gas meter connector is a crucial component connecting the gas pipeline to the gas meter. Its function is to ensure the sealing and stability of gas delivery, prevent gas leaks, and guarantee gas safety.

[0003] Gas meter connectors mainly consist of connecting nuts, sealing rings, and connector bodies. The connecting nut secures the pipe to the connector, the sealing ring prevents gas leakage, and the connector body provides the connection structure. When using, first align the pipe with the connector, then tighten the connecting nut to ensure a good seal. After installation, a gas tightness test is required to ensure there are no leaks.

[0004] In existing technologies, gas meter connectors suffer from nut loosening due to vibration and external forces during long-term use. This leads to unstable connector connections and increases the risk of gas leakage. Simultaneously, the interface is prone to aging and leakage due to electrochemical corrosion, resulting in insufficient sealing and safety. Loose nuts can cause gas leaks, creating safety hazards. Furthermore, aging and leakage caused by electrochemical corrosion can affect the reliability of the gas connection and even lead to serious accidents. Therefore, a leak-proof connector for gas meters is proposed to address these issues. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a leak-proof connector for gas meters, aiming to improve the problems of gas meter connectors in the prior art being prone to loosening due to vibration or external force, unstable connection, and leakage due to interface aging caused by electrochemical corrosion, resulting in poor sealing and safety.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A leak-proof connector for a gas meter includes a gas meter body and a connecting connector. An insulating anti-loosening mechanism is fixedly connected to the inner side of the connecting connector of the gas meter body. A locking and fixing mechanism is fixedly connected to the top of the gas meter body. An insulating connecting seat is fixedly connected to the top of the gas meter body. Multiple anti-loosening grooves are evenly provided on the top of the insulating connecting seat.

[0008] The insulating anti-loosening mechanism includes an outer tube core, the outer side of which is fixedly connected to the inner side of the connecting joint, an air inlet pipe fixedly connected to the top of the gas meter body, an inner tube core fixedly connected to the bottom of the air inlet pipe, an insulating rubber ring fixedly connected to the inner side of the cavity formed by the outer tube core and the inner tube core, and an anti-loosening locking component slidably connected to the inner side of the gas meter body.

[0009] As a further description of the above technical solution:

[0010] The inner side of the outer core is threaded, and the outer side of the inner core is threaded.

[0011] As a further description of the above technical solution:

[0012] The top of the insulating connector is fixedly connected to a mating threaded nozzle. The mating threaded nozzle has threads on both the inner and outer sides. The outer thread of the mating threaded nozzle is connected to the inner side of the outer tube core, and the inner thread of the mating threaded nozzle is connected to the outer side of the inner tube core.

[0013] As a further description of the above technical solution:

[0014] The anti-loosening locking assembly includes a multi-tooth anti-loosening ring, the outer side of which is slidably connected to the inner side of the connecting joint, a control end rod is fixedly connected to the outer side of the multi-tooth anti-loosening ring, a sliding groove is provided on the outer side of the connecting joint, and the outer side of the control end rod is slidably connected to the inner side of the sliding groove of the connecting joint.

[0015] As a further description of the above technical solution:

[0016] The outer side of the teeth of the multi-tooth anti-loosening ring is slidably connected to the inner side of the anti-loosening tooth groove, and the inner side of the connecting joint is slidably connected to the outer side of the insulating connecting seat.

[0017] As a further description of the above technical solution:

[0018] A locking spring is fitted on the outer side of the outer tube core. One end of the locking spring is fixedly connected to the top of the multi-tooth anti-loosening ring, and the other end of the locking spring is fixedly connected to the inner side of the connecting joint.

[0019] As a further description of the above technical solution:

[0020] The locking and fixing mechanism includes a fixing block, a fixing slide rod slidably connected to the inner side of the fixing block, a return spring sleeved on the outer side of the fixing slide rod, one end of the return spring being fixedly connected to the outer side of the fixing slide rod, and the other end of the return spring being fixedly connected to the inner side of the fixing block.

[0021] As a further description of the above technical solution:

[0022] The outer side of the connecting joint is provided with a locking groove. One end of the fixing slide rod is slidably connected to the inner side of the locking groove. The other end of the fixing slide rod is fixedly connected to a fixing shaft. A cam is rotatably connected to the outer side of the fixing shaft. A fixing operating rod is fixedly connected to the outer side of the cam.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the multi-tooth anti-loosening ring is driven by the control rod. During connection, the control rod is pulled up to make the multi-tooth anti-loosening ring move upward against the spring force of the engagement spring, which facilitates the engagement of the connection joint with the mating thread. After the connection is completed, the control rod is released, and the multi-tooth anti-loosening ring moves downward under the action of the engagement spring. Its teeth engage with the anti-loosening groove of the insulating connection seat. In this way, through the cooperation of the outer tube core, the inner tube core and the insulating rubber ring, the insulating rubber ring is squeezed and deformed to fill the gap, blocking the current conduction and enhancing the airtightness. In addition, the mechanical engagement of the multi-tooth anti-loosening ring and the anti-loosening groove effectively prevents the connection joint from rotating due to vibration and other factors, significantly improving the sealing performance and connection stability of the gas meter joint.

[0025] 2. In this utility model, the locking and fixing mechanism drives the cam to rotate around the fixed shaft by rotating the fixed operating rod. When the cam rotates from the long radius to the short radius, the fixed slide rod slides outward under the action of the return spring and locks into the locking and fixing groove of the connecting joint. This achieves the effect of secondary reinforcement and further restricts the rotational freedom of the connecting joint. Through mechanical locking, it effectively resists the risk of loosening caused by long-term use and vibration environment, provides reliable auxiliary fixing for gas meter joints, reduces the risk of gas leakage, and ensures the safety of gas use. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a leak-proof connector for a gas meter according to the present invention.

[0027] Figure 2 This is a schematic diagram of the structure of the fixing block for the anti-leakage connector of a gas meter according to the present invention;

[0028] Figure 3 This is a schematic diagram of the inlet pipe of a gas meter's leak-proof connector according to this utility model.

[0029] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0030] Figure 5 for Figure 3 Enlarged view of point B in the middle.

[0031] Legend:

[0032] 1. Gas meter body; 2. Gas inlet pipe; 3. Connecting joint; 4. Outer tube core; 5. Inner tube core; 6. Insulating rubber ring; 7. Engaging spring; 8. Multi-tooth anti-loosening ring; 9. Control end rod; 10. Insulating connecting seat; 11. Anti-loosening tooth groove; 12. Butt threaded nozzle; 13. Fixing block; 14. Fixing slide rod; 15. Return spring; 16. Fixing shaft; 17. Cam; 18. Fixing operating rod; 19. Engaging fixing groove. Detailed Implementation

[0033] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of a gas meter anti-leakage connector, including a gas meter body 1, which is the basic carrier of the entire device and is used to measure the amount of gas used; a connecting connector 3, which is a key component for connecting the gas meter to the gas pipeline, and is convenient to cooperate with the locking and fixing mechanism to achieve a stable fixation after connection; an insulating anti-loosening mechanism is fixedly connected to the inner side of the connecting connector 3 of the gas meter body 1; a locking and fixing mechanism is fixedly connected to the top of the gas meter body 1; and an insulating connecting seat 10 is fixedly connected to the top of the gas meter body 1. The insulating connecting seat 10 plays a dual role of insulation and connection support, on the one hand preventing electrochemical corrosion between the gas meter and the pipeline, and on the other hand providing a stable basic structure for the connection between the connecting connector 3 and the gas meter; and the top of the insulating connecting seat 10 is evenly provided with multiple anti-loosening grooves 11, which are adapted to the teeth at the bottom of the multi-tooth anti-loosening ring 8 to ensure that the teeth of the multi-tooth anti-loosening ring 8 can be smoothly engaged and tightly fitted, providing a reliable anti-loosening effect.

[0035] The insulation and anti-loosening mechanism includes an outer tube core 4, whose inner thread connects to a mating threaded nozzle 12, and whose outer side is fixed to the inner side of the connecting joint 3. It supports and conducts gas, forming a cavity with the inner tube core 5 to accommodate an insulating rubber ring 6, enhancing the connection's sealing and stability. The outer side of the outer tube core 4 is fixedly connected to the inner side of the connecting joint 3. An inlet pipe 2 is fixedly connected to the top of the gas meter body 1, serving as the channel for gas to flow into the gas meter body 1. It works in conjunction with the outer tube core 4 to ensure smooth gas delivery and provide a stable gas source for gas metering. The bottom of the inlet pipe 2 is fixedly connected to... The inner tube core 5 is connected to the threaded nozzle 12 on the outside of the inner tube core 5, forming a cavity with the outer tube core 4 to accommodate the insulating rubber ring 6. This ensures the connection is sealed and achieves stable gas transmission. The insulating rubber ring 6 is fixedly connected to the inner side of the cavity formed by the outer tube core 4 and the inner tube core 5. When the threaded nozzle 12 is connected, it will squeeze the insulating rubber ring 6, causing it to undergo elastic deformation, filling the connection gap, blocking the current conduction between metal parts, preventing electrochemical corrosion, and enhancing air tightness to effectively prevent gas leakage. The inner side of the gas meter body 1 is slidably connected with an anti-loosening locking component.

[0036] The inner side of the outer core 4 is threaded, and the outer side of the inner core 5 is threaded.

[0037] The top of the insulating connector 10 is fixedly connected with a mating threaded nozzle 12. The mating threaded nozzle 12 can realize a stable connection between the various components of the gas meter, ensuring the sealing and stability of gas transmission. The mating threaded nozzle 12 has threads on both the inner and outer sides. The outer thread of the mating threaded nozzle 12 is connected to the inner side of the outer tube core 4, and the inner thread of the mating threaded nozzle 12 is connected to the outer side of the inner tube core 5.

[0038] The anti-loosening locking assembly includes a multi-tooth anti-loosening ring 8. The multi-tooth anti-loosening ring 8 prevents the connecting joint 3 from rotating relative to the insulating connecting seat 10 by engaging with the anti-loosening tooth groove 11, thereby enhancing the stability of the connection and preventing the connection from loosening due to factors such as vibration. The outer side of the multi-tooth anti-loosening ring 8 is slidably connected to the inner side of the connecting joint 3. A control end rod 9 is fixedly connected to the outer side of the multi-tooth anti-loosening ring 8. The operator can pull the control end rod 9 upward to drive the multi-tooth anti-loosening ring 8 to slide upward against the elastic force of the engagement spring 7, so that the connecting joint 3 can rotate smoothly when connecting the pipeline. After the connection is completed, the control end rod 9 is released, and the multi-tooth anti-loosening ring 8 slides downward under the action of the engagement spring 7 to achieve engagement and anti-loosening. A sliding groove is opened on the outer side of the connecting joint 3, and the outer side of the control end rod 9 is slidably connected to the inner side of the sliding groove of the connecting joint 3.

[0039] The outer side of the teeth of the multi-tooth anti-loosening ring 8 is slidably connected to the inner side of the anti-loosening tooth groove 11, and the inner side of the connecting joint 3 is slidably connected to the outer side of the insulating connecting seat 10.

[0040] A locking spring 7 is fitted on the outer side of the outer core 4. The locking spring 7 provides downward elastic force to the multi-tooth anti-loosening ring 8, ensuring that the multi-tooth anti-loosening ring 8 can slide downward in time after connection and engage with the anti-loosening tooth groove 11 to achieve the anti-loosening function. One end of the locking spring 7 is fixedly connected to the top of the multi-tooth anti-loosening ring 8, and the other end of the locking spring 7 is fixedly connected to the inner side of the connecting joint 3.

[0041] Reference Figure 2 , Figure 3 and Figure 5 The locking and fixing mechanism includes a fixing block 13, which is used to fix the sliding guide of the slide rod 14 and ensure the straightness and stability of the slide rod 14 during the sliding process. The inner side of the fixing block 13 is slidably connected to the slide rod 14. When the slide rod 14 slides outward, it can be locked into the locking and fixing groove 19 of the connecting joint 3 to help fix the connecting joint 3 and prevent it from rotating. The outer side of the slide rod 14 is fitted with a return spring 15 to provide outward elastic force to the slide rod 14, so that the slide rod 14 maintains the tendency to extend outward when it is not subjected to external force. One end of the return spring 15 is fixedly connected to the outer side of the slide rod 14, and the other end of the return spring 15 is fixedly connected to the inner side of the fixing block 13.

[0042] The outer side of the connecting joint 3 is provided with a locking groove 19. The locking groove 19 ensures that the fixing slide rod 14 can be smoothly locked in and tightly fitted, providing a reliable auxiliary fixing effect and preventing the connecting joint 3 from rotating under long-term use and vibration environment. One end of the fixing slide rod 14 is slidably connected to the inner side of the locking groove 19, and the other end of the fixing slide rod 14 is fixedly connected to a fixing shaft 16. The outer side of the fixing shaft 16 is rotatably connected to a cam 17, and the outer side of the cam 17 is fixedly connected to a fixing operating rod 18.

[0043] Working principle: When performing the connection operation, first pull the control end rod 9 upward, which will drive the multi-tooth anti-loosening ring 8 to overcome the elastic force of the locking spring 7 and move upward, making room for the connection between the pipeline and the gas meter. At this time, align the connecting joint 3 with the mating threaded nozzle 12 of the gas pipeline and rotate it so that the mating threaded nozzle 12 is screwed into the outer tube core 4 and the inner tube core 5, completing the initial connection between the gas meter and the pipeline.

[0044] After the initial connection, the insulating rubber ring 6 pre-installed in the cavity formed by the outer core 4 and the inner core 5 is squeezed during the tightening of the mating threaded nozzle 12, undergoes elastic deformation, fills the connection gap, and not only blocks the current conduction between the metal parts to achieve insulation, but also enhances the airtightness through tight fit to complete the seal.

[0045] Then the locking process begins. Releasing the control rod 9 causes the multi-tooth anti-loosening ring 8 to slide downwards under the action of the engaging spring 7. The teeth at its bottom precisely engage with the anti-loosening tooth groove 11 at the top of the insulating connector 10, mechanically preventing the connector 3 from rotating relative to the insulating connector 10, thus completing the initial locking.

[0046] Finally, the locking and fixing process is performed. Rotating the fixing operating rod 18 causes the cam 17 to rotate around the fixed rotating shaft 16. When the contact end of the cam 17 and the fixing block 13 rotates from the long radius to the short radius, the fixing slide rod 14 slides outward under the elastic force of the return spring 15 and locks into the locking and fixing groove 19 of the connecting joint 3, forming a secondary reinforcement. This further ensures that the connecting joint 3 will not loosen under long-term use and vibration environment. At this point, the entire connection, insulation, sealing and fixing process is completed.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A leak-proof connector for a gas meter, comprising a gas meter body (1) and a connecting connector (3), characterized in that: An insulating anti-loosening mechanism is fixedly connected to the inner side of the connecting joint (3) of the gas meter body (1), a locking and fixing mechanism is fixedly connected to the top of the gas meter body (1), and an insulating connecting seat (10) is fixedly connected to the top of the gas meter body (1). Multiple anti-loosening grooves (11) are evenly opened on the top of the insulating connecting seat (10). The insulating anti-loosening mechanism includes an outer tube core (4), the outer side of which is fixedly connected to the inner side of the connecting joint (3), an air inlet pipe (2) is fixedly connected to the top of the gas meter body (1), an inner tube core (5) is fixedly connected to the bottom of the air inlet pipe (2), an insulating rubber ring (6) is fixedly connected to the inner side of the cavity formed by the outer tube core (4) and the inner tube core (5), and an anti-loosening locking component is slidably connected to the inner side of the gas meter body (1).

2. The anti-leakage connector for a gas meter according to claim 1, characterized in that: The inner side of the outer core (4) is threaded, and the outer side of the inner core (5) is threaded.

3. The anti-leakage connector for a gas meter according to claim 2, characterized in that: The top of the insulating connector (10) is fixedly connected to a mating threaded nozzle (12). The mating threaded nozzle (12) has threads on both the inner and outer sides. The outer thread of the mating threaded nozzle (12) is connected to the inner side of the outer tube core (4), and the inner thread of the mating threaded nozzle (12) is connected to the outer side of the inner tube core (5).

4. The anti-leakage connector for a gas meter according to claim 1, characterized in that: The anti-loosening locking assembly includes a multi-tooth anti-loosening ring (8), the outer side of which is slidably connected to the inner side of the connecting joint (3), and a control end rod (9) is fixedly connected to the outer side of the multi-tooth anti-loosening ring (8). A sliding groove is provided on the outer side of the connecting joint (3), and the outer side of the control end rod (9) is slidably connected to the inner side of the sliding groove of the connecting joint (3).

5. The anti-leakage connector for a gas meter according to claim 4, characterized in that: The outer side of the teeth of the multi-tooth anti-loosening ring (8) is slidably connected to the inner side of the anti-loosening tooth groove (11), and the inner side of the connecting joint (3) is slidably connected to the outer side of the insulating connecting seat (10).

6. The anti-leakage connector for a gas meter according to claim 4, characterized in that: A locking spring (7) is sleeved on the outer side of the outer core (4). One end of the locking spring (7) is fixedly connected to the top of the multi-tooth anti-loosening ring (8), and the other end of the locking spring (7) is fixedly connected to the inner side of the connecting joint (3).

7. The anti-leakage connector for a gas meter according to claim 1, characterized in that: The locking and fixing mechanism includes a fixing block (13), a fixing slide rod (14) is slidably connected to the inner side of the fixing block (13), and a return spring (15) is sleeved on the outer side of the fixing slide rod (14). One end of the return spring (15) is fixedly connected to the outer side of the fixing slide rod (14), and the other end of the return spring (15) is fixedly connected to the inner side of the fixing block (13).

8. The anti-leakage connector for a gas meter according to claim 7, characterized in that: The outer side of the connecting joint (3) is provided with a locking groove (19). One end of the fixed slide rod (14) is slidably connected to the inner side of the locking groove (19). The other end of the fixed slide rod (14) is fixedly connected to a fixed rotating shaft (16). A cam (17) is rotatably connected to the outer side of the fixed rotating shaft (16). A fixed operating rod (18) is fixedly connected to the outer side of the cam (17).

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