Gas pressure regulator

Abstract

The utility model discloses a pressure regulator technical field's a gas pressure regulator, including valve body, be located on the air inlet joint and the air outlet joint of valve body, the pressure regulating sleeve that is connected the air inlet joint and is located in the valve body, and be located at one side of valve body's end cover, be equipped with the pressure regulating connecting piece that is connected with piston on the end cover, the movable cover of pressure regulating connecting piece outer wall is equipped with the cover, the cover is located in the one end of pressure regulating sleeve away from the air inlet joint, is equipped with the air vent that is passed through on the cover, the one end of air vent away from piston is linked with the air vent pipeline, the air vent pipeline other end is passed through the end cover, the cover is inserted and is equipped with detection sensor, the detection end of detection sensor extends to the air vent, be equipped with the siren on the end cover, the utility model realizes automatic detection and alarm, effectively avoided because of the hidden leakage and led to the pressure regulating misalignment, energy waste and potential safety risk, significantly improved the reliability and security of pressure regulator operation.

Description

Technical Field

[0001] This utility model relates to the field of pressure regulator technology, specifically a gas pressure regulator. Background Technology

[0002] Gas pressure regulators are essentially a type of pressure reducing valve, generally used to reduce the pressure of gas. For example, a gas pressure regulator disclosed in publication number CN210179008U, while using a threaded head and threaded sleeve to compress a spring and cause elastic deformation to regulate pressure, requires the piston to frequently reciprocate within the regulating sleeve to respond to pressure changes. Furthermore, the seal relies heavily on a sealing ring on the piston's outer wall to maintain contact with the inner wall of the regulating sleeve. During long-term operation, the piston sealing ring is prone to wear due to continuous friction and other factors, leading to a decrease in sealing performance. This results in gas leakage from the left end of the regulating sleeve into the valve body cavity, forming an internal leak. This type of leakage is concealed and difficult for users to detect directly, not only wasting energy but also affecting the stability of the regulator's outlet pressure and potentially threatening equipment safety. Therefore, we propose a gas pressure regulator. Utility Model Content

[0003] The purpose of this invention is to provide a gas pressure regulator to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A gas pressure regulator includes a valve body, an inlet connector and an outlet connector disposed on the valve body, a pressure regulating sleeve connected to the inlet connector and disposed within the valve body, a first vent groove opened at one end of the pressure regulating sleeve and communicating with the inlet connector, a second vent groove opened on the outer wall of the pressure regulating sleeve and communicating with the inner cavity of the valve body, a piston disposed within the pressure regulating sleeve, and an end cap disposed on one side of the valve body. The end cap is provided with a pressure regulating connector connected to the piston. A cover is movably fitted on the outer wall of the pressure regulating connector. The cover is disposed at the end of the pressure regulating sleeve away from the inlet connector. A vent is opened through the cover. The end of the vent away from the piston is connected to a vent pipe. The other end of the vent pipe passes through the end cap. A detection sensor is inserted into the cover. The detection end of the detection sensor extends into the vent. An alarm is provided on the end cap. The alarm and the detection sensor are both electrically connected to a controller.

[0005] A further improvement is that the outer wall of the piston is provided with an annular groove, and an annular rubber airbag is provided in the annular groove. The outer wall of the annular rubber airbag is provided with an annular sealing ring for contacting the inner wall of the pressure regulating sleeve. The air inlet end of the annular rubber airbag is connected to a one-way pipe, and the other end of the one-way pipe passes through the cap and the end cap and is connected to a connecting joint.

[0006] A further improvement is that the pressure regulating connector includes an elastic connector, one end of which is rotatably connected to the piston, and the other end is connected to a threaded head. The threaded head is threadedly inserted into a threaded sleeve, and the threaded sleeve is fixedly inserted into the end cap. The end of the threaded head away from the elastic connector is provided with a fixing member for fixing to the end cap.

[0007] A further improvement is that the elastic connector includes a sleeve with one end connected to a threaded head, a movable rod with one end movably inserted into the other end of the sleeve, the other end of the movable rod movably passing through the cap and rotatably connecting to a piston, and a compression spring provided between one end of the movable rod and the inner wall of the sleeve, the compression spring being located inside the sleeve.

[0008] A further improvement is that the cover and the pressure regulating sleeve are detachably connected, the elastic connector and the threaded head are detachably connected, and the end cover and the valve body are detachably connected.

[0009] A further improvement is that the other end of the ventilation pipe passes through the end cap and connects to the filter element, and a solenoid valve electrically connected to the controller is provided inside the ventilation pipe.

[0010] Compared with the prior art, the beneficial effects of this utility model are: When the seal at the connection between the piston and the pressure regulating sleeve fails due to wear or other factors, the high-pressure gas entering from the inlet will enter the pressure regulating sleeve. Subsequently, some of the gas will enter the left side of the piston from the connection between the piston and the pressure regulating sleeve, and then be discharged to the outside through the vent and vent pipe. At this time, the detection sensor detects the gas and immediately sends a signal to the controller. The controller then activates the alarm to remind the staff to carry out maintenance, realizing automatic detection and alarm. This effectively avoids pressure regulation inaccuracy, energy waste, and potential safety risks caused by hidden leaks, and significantly improves the reliability and safety of the pressure regulator operation. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the gas pressure regulator structure of this utility model; Figure 2 This utility model Figure 1 Enlarged schematic diagram of structure A in the image; Figure 3 This is a schematic diagram of the elastic connector structure in this utility model.

[0012] In the diagram: 1. Valve body; 2. Inlet connector; 3. Outlet connector; 4. Pressure regulating sleeve; 5. First vent groove; 6. Second vent groove; 7. Piston; 8. Elastic connector; 81. Sleeve; 82. Movable rod; 83. Compression spring; 9. Threaded head; 10. Fixing component; 11. End cap; 12. Sealing cap; 13. Vent; 14. Vent pipe; 15. Detection sensor; 16. Filter; 17. One-way pipe; 18. Connecting connector; 19. Alarm; 20. Rubber airbag. Detailed Implementation

[0013] 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.

[0014] Example 1

[0015] Please see the appendix Figure 1-2 A gas pressure regulator includes a valve body 1, an inlet connector 2 and an outlet connector 3 disposed on the valve body 1. In this embodiment, the inlet connector 2 is located on the right side of the valve body 1, and the outlet connector 3 is located on the top of the valve body 1. The inlet connector 2 is used to connect to the inlet pipe, and the outlet connector 3 is used to connect to the outlet pipe. A pressure regulating sleeve 4 is connected to the inlet connector 2 and disposed inside the valve body 1. The pressure regulating sleeve 4 and the inlet connector 2 can be connected by a thread, but it is not limited to this method. The sleeve 4 is located at one end and communicates with the inlet connector 2. The first venting groove 5 and the second venting groove 6 are opened on the outer wall of the pressure regulating sleeve 4 and communicate with the inner cavity of the valve body 1. In this embodiment, the first venting groove 5 is opened at the right end of the pressure regulating sleeve 4 and the second venting groove 6 is opened at the top of the pressure regulating sleeve 4. The piston 7 is provided in the pressure regulating sleeve 4 and the end cap 11 is provided on one side of the valve body 1. The diameter of the piston 7 is adapted to the inner diameter of the pressure regulating sleeve 4. In this embodiment, the left side of the valve body 1 is hollow and its outer wall forms a flange. A sealing ring that contacts the end cap 11 is provided in the flange. The sealing ring is made of rubber material. The end cap 11 is provided with a pressure regulating connector connected to the piston 7. A cover 12 is movably fitted on the outer wall of the pressure regulating connector. In this embodiment, a sealing ring made of rubber material is provided at the connection between the cover 12 and the pressure regulating connector. The cover 12 is located at the end of the pressure regulating sleeve 4 away from the air inlet connector 2, and is used to close one end of the pressure regulating sleeve 4. A vent 13 is provided through the cover 12. The end of the vent 13 away from the piston 7 is connected to a vent pipe 14. The other end of the vent pipe 14 passes through the end cap 11. The vent pipe 14 and the vent 13 facilitate the piston 7 to move axially along the pressure regulating sleeve 4 within the pressure regulating sleeve 4. A detection sensor 15 is inserted into the cover 12. In this embodiment, the detection sensor 15 is a gas detection sensor, but it is not limited to this type. The detection end of the detection sensor 15 extends into the vent 13. An alarm 19 is provided on the end cap 11. In this embodiment, the alarm 19 can be an audible and visual alarm. The alarm 19 and the detection sensor 15 are electrically connected and controlled. When the connection between piston 7 and pressure regulating sleeve 4 fails to seal due to wear or other factors, the high-pressure gas entering from the inlet connector 2 will enter the pressure regulating sleeve 4. Some of the gas will then enter the left side of piston 7 from the connection between piston 7 and pressure regulating sleeve 4, and be discharged to the outside through vent 13 and vent pipe 14. At this time, the detection sensor 15 detects the gas and immediately sends a signal to the controller. The controller then controls the alarm 19 to operate, reminding the staff. During normal use, the high-pressure gas entering from the inlet connector 2 will enter the pressure regulating sleeve 4. The high-pressure gas passes through the first vent groove 5 into the pressure regulating sleeve 4. Under the pressure of the high-pressure gas, piston 7 moves to the left. The gas on the left side of the pressure regulating sleeve 4 is squeezed by piston 7 and discharged to the outside through vent 13 and vent pipe 14, maintaining internal and external balance. The leftward movement of piston 7 causes its right end to move below the second vent groove 6, allowing the high-pressure gas to enter the valve body 1 through the second vent groove 6. The large space inside the valve body 1 achieves a pressure reduction effect.

[0016] Preferably, in this embodiment, the outer wall of the piston 7 is provided with an annular groove, and an annular rubber airbag 20 is provided in the annular groove. The annular rubber airbag 20 is made of wear-resistant rubber material. The outer wall of the annular rubber airbag 20 is provided with an annular sealing ring for contacting the inner wall of the pressure regulating sleeve 4. The annular sealing ring is also made of wear-resistant rubber material. The air inlet end of the annular rubber airbag 20 is connected to a one-way pipe 17, which is a pipe with a one-way valve inside. The other end of the one-way pipe 17 passes through the cap 12 and the end cap 11 and is connected to a connecting joint 18. When the seal at the connection between the piston 7 and the pressure regulating sleeve 4 fails, the user can connect an external inflation device through the connecting joint 18 and inject gas into the annular rubber airbag 20 through the inflation device. This causes the annular rubber airbag 20 to expand and drive the annular sealing ring to make tight contact with the inner wall of the pressure regulating sleeve 4 for pneumatic compensation. This not only improves the sealing reliability and wear resistance of the piston 7 movement, but also enables online repair without stopping the machine or disassembling the pressure regulator, reducing downtime maintenance costs and safety risks caused by seal failure.

[0017] Preferably, in this embodiment, the other end of the vent pipe 14 passes through the end cap 11 and is connected to the filter element 16. The filter element 16 is, for example, an activated carbon filter, but is not limited to this type. It is used to ensure that when the piston 7 fails, some of the leaked gas will not pose a threat to the external environment or users. The vent pipe 14 is equipped with a solenoid valve that is electrically connected to the controller. When the solenoid valve is in normal use, it is in the open state. When the detection sensor 15 detects the gas, it immediately sends a signal to the controller. The controller also controls the solenoid valve to close to prevent further gas leakage.

[0018] Example 2

[0019] Please see the appendix Figure 1-3 Based on Embodiment 1, the pressure regulating connector in this embodiment includes an elastic connector 8. One end of the elastic connector 8 is rotatably connected to the piston 7 (e.g., rotatably connected via a bearing), and the other end is connected to a threaded head 9. The threaded head 9 is threadedly inserted into a threaded sleeve, and the threaded sleeve is fixedly inserted into the end cap 11. The end of the threaded head 9 away from the elastic connector 8 is provided with a fixing member 10 for fixing to the end cap 11. When it is necessary to change the pressure regulating pressure, the fixing member 10 is released from fixing the threaded head 9, and the threaded head 9 is rotated. The threaded head 9 compresses the elastic connector 8, causing the elastic connector 8 to produce greater deformation, thereby adjusting the elastic deformation of the elastic connector 8. After the air pressure passing through the piston 7 stabilizes again, the pressure regulating air pressure is changed. After adjustment, the threaded head 9 can be fixed again by the fixing member 10. In this embodiment, the fixing member 10 includes structures such as a knob, a spring, a limiting block, and a limiting groove, which are widely used in the field and will not be described in detail here. Of course, the fixing member 10 is not limited to the above-mentioned type.

[0020] Preferably, the elastic connector 8 in this embodiment includes a sleeve 81 with one end connected to a threaded head 9, and a movable rod 82 with one end movably inserted into the other end of the sleeve 81. The other end of the movable rod 82 movably passes through the cap 12 and is rotatably connected to the piston 7. One end of the movable rod 82 is provided with a compression spring 83 on the inner wall of the sleeve 81. The compression spring 83 is located inside the sleeve 81. When the threaded head 9 is rotated, the threaded head 9 drives the sleeve 81 to compress the compression spring 83, thereby adjusting the elastic deformation of the compression spring 83. Since the compression spring 83 is located inside the sleeve 81, the sleeve 81 protects the compression spring 83 and extends its service life.

[0021] Preferably, in this embodiment, the cover 12 and the pressure regulating sleeve 4 are detachably connected and can be fixedly connected by screws. The elastic connector 8 and the threaded head 9 are detachably connected and can be fixedly connected by screws. The end cover 11 and the valve body 1 are detachably connected and can be fixedly connected by screws, which facilitates the maintenance of the internal structure of the valve body 1 by the user.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gas pressure regulator, comprising a valve body (1), an inlet connector (2) and an outlet connector (3) disposed on the valve body (1), a pressure regulating sleeve (4) connected to the inlet connector (2) and disposed within the valve body (1), a first vent groove (5) opened at one end of the pressure regulating sleeve (4) and communicating with the inlet connector (2), a second vent groove (6) opened on the outer wall of the pressure regulating sleeve (4) and communicating with the inner cavity of the valve body (1), a piston (7) disposed within the pressure regulating sleeve (4), and an end cap (11) disposed on one side of the valve body (1), characterized in that: The end cap (11) is provided with a pressure regulating connector connected to the piston (7). The outer wall of the pressure regulating connector is movably fitted with a cover (12). The cover (12) is located at the end of the pressure regulating sleeve (4) away from the air inlet connector (2). A vent (13) is opened through the cover (12). The end of the vent (13) away from the piston (7) is connected to a vent pipe (14). The other end of the vent pipe (14) passes through the end cap (11). A detection sensor (15) is inserted into the cover (12). The detection end of the detection sensor (15) extends into the vent (13). An alarm (19) is provided on the end cap (11). The alarm (19) and the detection sensor (15) are both electrically connected to the controller.

2. A gas pressure regulator according to claim 1, characterized in that: The piston (7) has an annular groove on its outer wall, and an annular rubber airbag (20) is provided in the annular groove. The annular rubber airbag (20) has an annular sealing ring on its outer wall for contacting the inner wall of the pressure regulating sleeve (4). The air inlet end of the annular rubber airbag (20) is connected to a one-way pipe (17), and the other end of the one-way pipe (17) passes through the cap (12) and the end cap (11) and is connected to a connecting joint (18).

3. A gas pressure regulator according to claim 1, characterized in that: The pressure regulating connector includes an elastic connector (8), one end of which is rotatably connected to the piston (7), and the other end is connected to a threaded head (9). The threaded head (9) is threadedly inserted into a threaded sleeve, and the threaded sleeve is fixedly inserted into the end cap (11). The end of the threaded head (9) away from the elastic connector (8) is provided with a fixing member (10) for fixing to the end cap (11).

4. A gas pressure regulator according to claim 3, characterized in that: The elastic connector (8) includes a sleeve (81) with one end connected to a threaded head (9), and a movable rod (82) with one end movably inserted into the other end of the sleeve (81). The other end of the movable rod (82) movably passes through the cover (12) and is rotatably connected to the piston (7). One end of the movable rod (82) is provided with a compression spring (83) on the inner wall of the sleeve (81). The compression spring (83) is located inside the sleeve (81).

5. A gas pressure regulator according to claim 3, characterized in that: The cap (12) is detachably connected to the pressure regulating sleeve (4), the elastic connector (8) is detachably connected to the threaded head (9), and the end cap (11) is detachably connected to the valve body (1).

6. A gas pressure regulator according to claim 1, characterized in that: The other end of the ventilation pipe (14) passes through the end cap (11) and is connected to the filter element (16). The ventilation pipe (14) is equipped with a solenoid valve that is electrically connected to the controller.

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