Damping device of gas pressure regulator

Abstract

The utility model relates to the field of natural gas transmission and distribution, in particular to a damping device of a gas pressure regulator, which comprises a respirator shell and a respirator seat, the right end of the respirator shell is connected with the left end of the respirator seat through threads, and a respirator core component is arranged in the respirator shell. The breather core assembly comprises a relief valve channel assembly installed on the breather shell and the breather base, two relief valve movable discs symmetrically arranged on the relief valve channel assembly in a sliding and sleeving mode, and two relief valve springs symmetrically arranged on the relief valve channel assembly in a sleeving mode. The two ends of the blow-off valve spring are fixedly connected with the blow-off valve channel assembly and the blow-off valve movable disc respectively. According to the pressure regulator, the respirator shell, the respirator seat and the respirator core assembly are matched with one another, so that the impact of feedback pressure at the rear end on a sensing element of the pressure regulator body is reduced, and the anti-surge purpose of stable pressure tapping is achieved.

Description

Technical Field

[0001] The utility model relates to the field of natural gas transmission and distribution, in particular to a gas pressure regulator damping device. Background Art

[0002] In the gas transmission and distribution system, the function of the gas pressure regulator is to automatically adjust the outlet pressure to stabilize it within a certain pressure range. Today's gas pressure regulators are generally equipped with corresponding damping valves to overcome the surge phenomenon of the pressure regulator under special working conditions.

[0003] The principle is to use a damping valve to reduce the impact of the rear-end feedback pressure on the sensor element of the voltage regulator body, thereby achieving the purpose of smooth pressure taking and anti-surge. The commonly used structures in the prior art are generally throttle hole structures or spring damping structures, etc. The throttle hole structure or spring damping structure will relatively reduce the response speed of the voltage regulator. Utility Model Content

[0004] The utility model aims to solve the following shortcomings in the prior art: the throttle hole structure or the spring damping structure will relatively reduce the response speed of the pressure regulator, and a gas pressure regulator damping device is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A gas pressure regulator damping device comprises a respirator shell and a respirator seat, wherein the right end of the respirator shell is connected to the left end of the respirator seat by threads, and a respirator core assembly is arranged in the respirator shell;

[0007] The respirator core assembly includes a relief valve channel assembly installed on the respirator shell and the respirator seat, two relief valve movable disks symmetrically slidably sleeved on the relief valve channel assembly, and two relief valve springs symmetrically sleeved on the relief valve channel assembly, one end of the relief valve spring is fixedly connected to the relief valve movable disk.

[0008] Preferably, a sealing ring is provided between the respirator housing and the respirator seat, and the sealing ring is made of nitrile rubber.

[0009] Preferably, grooves are provided at both ends of the relief valve channel assembly, and opening retaining rings are provided in the two grooves.

[0010] Preferably, both ends of the relief valve channel assembly are fixedly sleeved with flat washers, and the flat washers are located between the relief valve movable disk and the opening retaining ring.

[0011] Preferably, the relief valve spring is made of carbon spring steel.

[0012] Preferably, the material of the release valve movable disc is ABS resin.

[0013] In the utility model, the beneficial effects are:

[0014] Through the cooperation of the respirator shell, the respirator seat and the respirator core assembly, the impact of the rear-end feedback pressure on the sensing element of the pressure regulator body is reduced, thereby achieving the purpose of stable pressure taking and anti-surge. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a partial cross-sectional structural schematic diagram of a gas pressure regulator damping device proposed by the utility model;

[0016] Figure 2 This is a cross-sectional structural schematic diagram of a respirator core assembly in a gas pressure regulator damping device proposed by the utility model;

[0017] Figure 3 This is a schematic cross-sectional structural diagram of a respirator housing in a gas pressure regulator damping device proposed by the utility model;

[0018] Figure 4 This is a cross-sectional structural schematic diagram of a respirator seat in a gas pressure regulator damping device proposed by the utility model;

[0019] Figure 5 This is a cross-sectional structural schematic diagram of a relief valve channel component in a gas pressure regulator damping device proposed by the utility model;

[0020] Figure 6 The utility model provides a cross-sectional structural diagram of a movable disc of a relief valve in a gas pressure regulator damping device.

[0021] In the figure: 1 respirator shell, 2 respirator core assembly, 201 relief valve channel assembly, 202 relief valve movable disk, 203 relief valve spring, 3 sealing ring, 4 respirator seat, 5 opening retaining ring, 6 flat gasket. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-Figure 6 A gas pressure regulator damping device comprises a respirator shell 1 and a respirator seat 4, wherein the right end of the respirator shell 1 is connected to the left end of the respirator seat 4 by threads, and a respirator core assembly 2 is arranged in the respirator shell 1;

[0024] The respirator core assembly 2 includes a relief valve channel assembly 201 installed on the respirator shell 1 and the respirator seat 4, two relief valve movable disks 202 symmetrically slidably sleeved on the relief valve channel assembly 201, and two relief valve springs 203 symmetrically sleeved on the relief valve channel assembly 201. The relief valve spring 203 is made of carbon spring steel, and the relief valve movable disk 202 is made of ABS resin. One end of the relief valve spring 203 is fixedly connected to the relief valve movable disk 202. Grooves are provided at both ends of the relief valve channel assembly 201, and opening retaining rings 5 ​​are provided in the two grooves. Flat washers 6 are fixedly sleeved at both ends of the relief valve channel assembly 201, and the flat washers 6 are located between the relief valve movable disk 202 and the opening retaining ring 5. A sealing ring 3 is provided between the respirator shell 1 and the respirator seat 4, and the sealing ring 3 is made of nitrile rubber.

[0025] During operation, the gas pressure regulator needs to obtain the downstream pressure through the feedback signal tube and add the pressure of its own spring to achieve force balance and stabilize the downstream pressure within a certain pressure range.

[0026] Since the feedback signal tube is thin and unobstructed, the downstream gas flows too fast in the feedback signal tube, and the internal structure of the gas pressure regulator cannot respond in time. The damping device reduces the gas flow rate through the spring damping structure. After stable operation, the damping device can be fully opened without affecting the performance of the gas pressure regulator.

[0027] The respirator housing 1 and the respirator seat 4 are connected together by threads, and a sealing ring 3 is arranged in the middle to ensure that the natural gas does not leak out. During the use of the gas pressure regulator, the natural gas passes through the feedback signal pipe and flows through the damping device. The gas pushes the relief valve movable disk 202 to move through the hole on the relief valve channel component 201, and then the relief valve movable disk 202 will push the relief valve spring 203 to undergo a phase change, and then enter the low-pressure chamber of the gas pressure regulator to achieve force balance.

[0028] In the utility model, during the use of the gas pressure regulator, when the natural gas passes through the feedback signal pipe and flows through the damping device, the gas pushes the relief valve movable disk 202 which is subjected to the elastic force of the relief valve spring 203 through the hole on the relief valve channel component 201, and then enters the low-pressure chamber of the gas pressure regulator to achieve force balance.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A gas pressure regulator damping device, comprising a respirator housing (1) and a respirator seat (4), characterized in that: The right end of the respirator shell (1) is connected to the left end of the respirator seat (4) by means of threads, and a respirator core assembly (2) is arranged inside the respirator shell (1); The respirator core assembly (2) comprises a relief valve channel assembly (201) mounted on a respirator housing (1) and a respirator seat (4), two relief valve movable discs (202) symmetrically slidably sleeved on the relief valve channel assembly (201), and two relief valve springs (203) symmetrically sleeved on the relief valve channel assembly (201), one end of the relief valve spring (203) being fixedly connected to the relief valve movable disc (202).

2. A gas pressure regulator damping device according to claim 1, characterized in that: A sealing ring (3) is arranged between the respirator housing (1) and the respirator seat (4), and the sealing ring (3) is made of nitrile rubber.

3. A gas pressure regulator damping device according to claim 1, characterized in that: Grooves are provided at both ends of the relief valve channel component (201), and opening retaining rings (5) are provided in the two grooves.

4. A gas pressure regulator damping device according to claim 3, characterized in that: Flat washers (6) are fixedly sleeved at both ends of the relief valve channel assembly (201), and the flat washers (6) are located between the relief valve movable disk (202) and the opening retaining ring (5).

5. A gas pressure regulator damping device according to claim 1, characterized in that: The material of the relief valve spring (203) is carbon spring steel.

6. A gas pressure regulator damping device according to claim 1, characterized in that: The material of the relief valve movable disc (202) is ABS resin.

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