Pressure-adjustable valve for gas pipeline

Abstract

The utility model provides a pressure-adjustable valve for a gas pipeline, which belongs to the technical field of gas valves and comprises a pressure-adjustable valve body, the output end of the pressure-adjustable valve body is communicated with a gas outlet pipe, the input end of the pressure-adjustable valve body is communicated with a gas inlet pipe, and the gas inlet pipe is communicated with a gas outlet pipe. An external thread section and a sealing mechanism are arranged on the circumferential side wall of the end, away from the pressure-adjustable valve body, of the air inlet pipe, the sealing mechanism comprises a control assembly, two sealing assemblies and two limiting assemblies, the control assembly comprises a fixing sleeve fixedly connected to the air inlet pipe in the circumferential direction, and a fixing plate is fixedly connected to the circumferential side wall of the fixing sleeve. According to the pressure-adjustable air valve, through the arranged sealing mechanism, the threaded connection position of the pressure-adjustable air valve can be further sealed conveniently, so that the use safety of the valve can be effectively improved, and the pressure-adjustable air valve is more in line with the actual use scene.

Description

Technical Field

[0001] The utility model relates to the technical field of gas valves, in particular to a pressure-adjustable valve for a gas pipeline. Background Art

[0002] In the gas pipeline system, the adjustable pressure valve plays a vital role. It can accurately control the pressure of the gas and ensure that the gas is supplied to different users and equipment at an appropriate pressure. In the urban gas supply network, from the high-pressure gas transmission pipeline to the low-pressure household pipeline, multiple pressure adjustments are required. The adjustable pressure valve is the key equipment to achieve this process. If the pressure is too high, it may cause gas leakage, pipeline rupture and other safety accidents. If the pressure is too low, it will affect the normal use of gas equipment, such as the gas stove cannot ignite normally.

[0003] After searching, the patent document with publication number CN214534696U discloses a multi-stage gas pressure regulating valve, including a first-stage pressure regulating valve and a second-stage pressure regulating valve arranged in sequence from left to right. The outlet end of the first-stage pressure regulating valve is connected to the inlet end of the second-stage pressure regulating valve. The inlet end of the first-stage pressure regulating valve is provided with an overcurrent cut-off device. The second-stage pressure regulating valve includes a valve seat, a valve cover and a pressure regulating device. The pressure regulating device includes a first pressure regulating device and a second pressure regulating device. This utility model can protect people's lives and property more safely and reliably.

[0004] The above-mentioned prior art often has the following problems when used:

[0005] When using existing gas pipeline pressure-regulating valves, the valve connection method is mostly threaded connection. Sealing materials are usually used at the threaded connection of the gas pressure-regulating valve to enhance the sealing. During the assembly process, if the raw tape is wrapped too much or unevenly, it is easy to cause a loose seal. In addition, after long-term use, the sealing material may age and crack, thereby losing its sealing effect and causing gas leakage. Therefore, corresponding measures are needed to solve the problem. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a pressure-adjustable valve for a gas pipeline.

[0007] The embodiment of the present utility model provides a pressure-adjustable valve for a gas pipeline, comprising:

[0008] An adjustable pressure valve body, wherein the output end of the adjustable pressure valve body is connected to an air outlet pipe, the input end of the adjustable pressure valve body is connected to an air inlet pipe, and the air inlet pipe is provided with an externally threaded section on a circumferential side wall away from one end of the adjustable pressure valve body;

[0009] The sealing mechanism includes a control component, two sealing components and two limit components. The control component includes a fixed sleeve that is circumferentially fixedly connected to the intake pipe. The circumferential side wall of the fixed sleeve is fixedly connected to a fixed plate. The side wall of the fixed plate is fixedly connected to a bearing plate. A bidirectional threaded rod is provided on the side of the fixed plate. The bidirectional threaded rod is rotatably connected to the bottom surface of the bearing plate through a bearing. Nuts are threadedly connected on the threaded sections of the bidirectional threaded rod with opposite thread directions.

[0010] Furthermore, the sealing assembly includes a connecting rod fixedly connected to the side wall of the nut, the side wall of the connecting rod is fixedly connected to a connecting plate, the bottom surface of the connecting plate is fixedly connected to an arc-shaped clamping plate, and the arc-shaped inner wall of the arc-shaped clamping plate is fixedly connected to a rubber sealing sleeve.

[0011] Furthermore, the limiter includes a guide rod fixedly connected to the upper surface of the fixed plate, a guide plate is slidably sleeved on the guide rod, and a side wall of the guide plate is fixedly connected to the side wall of the nut.

[0012] Furthermore, the two arc-shaped clamping plates and the rubber sealing sleeves are symmetrically arranged with respect to the air intake pipe, and the two rubber sealing sleeves are spliced ​​together to form a circular ring shape.

[0013] Furthermore, the two nuts, the connecting rod and the connecting plate are respectively located on the upper and lower sides of the intake pipe.

[0014] Furthermore, a knob is fixedly connected to the top end of the bidirectional threaded rod, and a plurality of anti-slip grooves are equidistantly provided on the circumferential side wall of the knob.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The sealing mechanism provided in the utility model can conveniently perform further sealing treatment on the threaded connection of the adjustable pressure gas valve, thereby effectively avoiding the occurrence of gas leakage due to aging of the sealing material. At the same time, further sealing treatment can also effectively improve the safety of the valve and be more in line with actual usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of a pressure-adjustable valve for a gas pipeline described in an embodiment of the present utility model.

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of a pressure-adjustable valve for a gas pipeline described in an embodiment of the present utility model from another perspective.

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of a pressure-adjustable valve for a gas pipeline described in an embodiment of the present utility model from another perspective.

[0020] In the above drawings: 1 adjustable pressure valve body, 2 outlet pipe, 3 inlet pipe, 4 external threaded section, 5 fixing sleeve, 6 fixing plate, 7 bearing plate, 8 bidirectional threaded rod, 9 nut, 10 connecting rod, 11 connecting plate, 12 arc splint, 13 rubber sealing sleeve, 14 guide rod, 15 guide plate. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0022] like Figure 1-Figure 3 As shown, the embodiment of the present utility model provides a pressure-adjustable valve for a gas pipeline, comprising:

[0023] The pressure-regulating valve body 1, the output end of the pressure-regulating valve body 1 is connected to the air outlet pipe 2, the input end of the pressure-regulating valve body 1 is connected to the air inlet pipe 3, the circumferential side wall of the air inlet pipe 3 away from one end of the pressure-regulating valve body 1 is provided with an external threaded section 4, a sealing mechanism, the sealing mechanism includes a control component, two sealing components and two limit components, the control component includes a fixed sleeve 5 circumferentially fixedly connected to the air inlet pipe 3, the circumferential side wall of the fixed sleeve 5 is fixedly connected to a fixed plate 6, the side wall of the fixed plate 6 is fixedly connected to a bearing plate 7, a bidirectional threaded rod 8 is provided on the side of the fixed plate 6, the bidirectional threaded rod 8 is rotatably connected to the bottom surface of the bearing plate 7 through a bearing, and nuts 9 are threadedly connected to the threaded sections of the bidirectional threaded rod 8 with opposite thread directions. The sealing assembly includes a connecting rod 10 fixedly connected to the side wall of the nut 9, the side wall of the connecting rod 10 is fixedly connected to a connecting plate 11, the bottom surface of the connecting plate 11 is fixedly connected to an arc-shaped splint 12, and the arc-shaped inner wall of the arc-shaped splint 12 is fixedly connected to a rubber sealing sleeve 13. The two arc-shaped splints 12 and the rubber sealing sleeve 13 are symmetrically arranged about the intake pipe 3. The two rubber sealing sleeves 13 are spliced ​​together to form a circular ring. The sealing performance of the valve connection is improved by two matching rubber sealing sleeves 13. The two nuts 9, the connecting rod 10 and the connecting plate 11 are respectively located on the upper and lower sides of the intake pipe 3. The top of the bidirectional threaded rod 8 is fixedly connected to a knob, and the circumferential side wall of the knob is equidistantly provided with multiple anti-slip grooves for easy operation by users.

[0024] The limit includes a guide rod 14 fixedly connected to the upper surface of the fixed plate 6, a guide plate 15 is slidably sleeved on the guide rod 14, and the side wall of the guide plate 15 is fixedly connected to the side wall of the nut 9 to ensure the normal operation of the sealing assembly.

[0025] The detailed working process of this utility model is as follows:

[0026] During use, the pressure-adjustable valve body 1 is assembled first. The gas output device and the pressure-adjustable valve body 1 are connected via the externally threaded section 4 at the side of the intake pipe 3. After the connection is completed, the connection can be further sealed using a sealing mechanism to ensure airtightness in subsequent use. After the intake pipe 3 is connected, the two-way threaded rod 8 is rotated by turning the knob. The two-way threaded rod 8 rotates, and the two nuts 9, restricted by the guide plate 15 and the guide rod 14, will engage with the two nuts 9 with their threads. Then, the two nuts 9 will move toward each other along the two-way threaded rod 8. The two connecting rods 10 and the connecting plate 11 drive the two curved clamping plates 12 to move toward each other. When further sealing is required, the two curved clamping plates 12 move closer together, thereby driving the two rubber sealing sleeves 13 closer together. Then, the two rubber sealing sleeves 13 are tightly fitted and sleeved on the connection of the intake pipe 3. When covering the connection, the two rubber sealing sleeves 13 will elastically deform under pressure due to their own elasticity and deformation ability, thereby filling the small gap in the connection and preventing gas from leaking through these gaps, achieving further sealing operation.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A pressure-adjustable valve for a gas pipeline, characterized in that: include: A pressure-adjustable valve body (1), wherein the output end of the pressure-adjustable valve body (1) is connected to an air outlet pipe (2), the input end of the pressure-adjustable valve body (1) is connected to an air inlet pipe (3), and the air inlet pipe (3) is provided with an external thread section (4) on a circumferential side wall away from one end of the pressure-adjustable valve body (1); A sealing mechanism, comprising a control component, two sealing components and two limit components, wherein the control component comprises a fixed sleeve (5) fixedly connected to the intake pipe (3) in a circumferential direction, the circumferential side wall of the fixed sleeve (5) is fixedly connected to a fixed plate (6), the side wall of the fixed plate (6) is fixedly connected to a bearing plate (7), a bidirectional threaded rod (8) is provided on the side of the fixed plate (6), the bidirectional threaded rod (8) is rotatably connected to the bottom surface of the bearing plate (7) through a bearing, and nuts (9) are threadedly connected to the threaded sections of the bidirectional threaded rod (8) with opposite thread directions.

2. The pressure-adjustable valve for a gas pipeline according to claim 1, characterized in that: in: The sealing assembly includes a connecting rod (10) fixedly connected to the side wall of the nut (9), the side wall of the connecting rod (10) is fixedly connected to a connecting plate (11), the bottom surface of the connecting plate (11) is fixedly connected to an arc-shaped clamping plate (12), and the arc-shaped inner wall of the arc-shaped clamping plate (12) is fixedly connected to a rubber sealing sleeve (13).

3. The pressure-adjustable valve for a gas pipeline according to claim 1, characterized in that: in: The limiter comprises a guide rod (14) fixedly connected to the upper surface of the fixed plate (6), a guide plate (15) is slidably sleeved on the guide rod (14), and the side wall of the guide plate (15) is fixedly connected to the side wall of the nut (9).

4. The pressure-adjustable valve for a gas pipeline according to claim 2, characterized in that: in: The two arc-shaped clamping plates (12) and the rubber sealing sleeve (13) are symmetrically arranged with respect to the air intake pipe (3), and the two rubber sealing sleeves (13) are spliced ​​together to form a circular ring.

5. The pressure-adjustable valve for a gas pipeline according to claim 2, characterized in that: in: The two nuts (9), the connecting rod (10) and the connecting plate (11) are respectively located on the upper and lower sides of the air intake pipe (3).

6. The pressure-adjustable valve for a gas pipeline according to claim 1, characterized in that: in: The top end of the bidirectional threaded rod (8) is fixedly connected to a knob, and a plurality of anti-slip grooves are equidistantly provided on the circumferential side wall of the knob.

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