Gas pressure reducing device

Abstract

The utility model provides a gas decompression device and relates to the technical field of gas decompression. A regulating valve A is connected with one end of a flange plate A, the other end of the flange plate A is in threaded connection with a connecting support, the flange plate A is connected with one end of a flange seat A, the other end of the flange seat A is welded to one end of a body, and a regulating valve seat is welded to the other end of the body and connected with a flange plate B; an adjusting valve B is mounted at the end of the flange plate B; a flange seat B is welded at the top of the body; a flange plate C is fixed at the top of the flange seat B; the inlet pressure can be accurately reduced to the set outlet pressure, and the outlet pressure is kept relatively stable; damage to downstream equipment and pipelines caused by too high pressure is effectively prevented, the service life is prolonged, and the maintenance cost is reduced; safety accidents such as leakage and explosion caused by too high pressure are avoided; by reasonably controlling the pressure, the energy waste is reduced, and the energy utilization efficiency of the system is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas pressure reducing technical field, concretely relates to a gas pressure reducing device. BACKGROUND

[0002] The existing gas pressure reducing device has certain energy loss in the pressure reducing process, especially in the case of large pressure difference, the energy loss is larger; the pressure reducing device is easy to be corroded by medium, internal damage is easy to appear, the maintenance cost is higher; the calibration range of the pressure reducing device is smaller, cannot satisfy the high flow demand, and is easy to cause the impact of gas when starting or closing, causes the flow restriction or fluctuation; low pressure fluctuation or instability appears when high and low pressure is adjusted; the pressure reducing device needs to adjust medium, the response speed is slower, cannot satisfy the demand in the occasion needing fast response. SUMMARY

[0003] The utility model discloses a gas pressure reducing device to solve the technical problems in the prior art.

[0004] The utility model discloses the new technical scheme that adopts:

[0005] A gas pressure reducing device, including regulating valve A, flange plate A, pressure gauge A, flange seat A, connecting support, connecting rod, body, regulating valve seat, support, spring A, diaphragm, upper top piece, spring B, lower top piece, regulating valve B, flange plate B, flange seat B, flange plate C and pressure gauge B, one side of regulating valve A is connected through sealing gasket and exhaust plug screw thread, one side of regulating valve A is connected with one end of flange plate A, the other end of flange plate A is connected with connecting support with screw thread, the pressure gauge A is installed on flange plate A, and one end of flange seat A is connected with flange plate A through bolt, and the other end of flange seat A is welded in one end of body, and the other end of body is welded with regulating valve seat, and the regulating valve seat is connected with flange plate B through bolt, and the end of flange plate B is installed with regulating valve B;The top of body is welded with flange seat B, and the top of flange seat B is fixed with flange plate C through bolt, and the top of flange plate C is installed with pressure gauge B;

[0006] The inside of flange plate A is filled with sealing seat, the end of sealing seat is installed with sealing pad near connecting support side, and one end of connecting rod is connected with sealing seat through connecting support and sealing pad with screw thread, and the other end of connecting rod is connected with fixed nut through regulating valve seat, support and spring A with screw thread, and the fixed nut is welded in one side of diaphragm, and the other side of diaphragm is abutted in one side of upper top piece, and the other side of upper top piece is installed in one end of spring B, and the other end of spring B is installed in one side of lower top piece, and the lower top piece is installed in flange plate B.

[0007] Preferably, the sealing ring and the sealing gasket are arranged between the flange plate A and the flange seat A.

[0008] Preferably, the pressure gauge A has a range of 0-25 MPa.

[0009] Preferably, the pressure gauge B has a range of 0-4 MPa.

[0010] Preferably, the sealing seat is made of copper.

[0011] Preferably, the sealing gasket is made of PTFE.

[0012] Preferably, the diaphragm is made of 304 stainless steel.

[0013] Preferably, the upper top piece is crescent-shaped.

[0014] Preferably, the body is a tee joint.

[0015] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0016] Pressure regulation stability: the inlet pressure can be accurately reduced to the set outlet pressure, and the outlet pressure is relatively stable.

[0017] Protection of equipment and pipelines: effectively prevent high pressure from causing damage to downstream equipment and pipelines, prolong the service life, and reduce maintenance costs.

[0018] Improve system safety: avoid safety accidents such as leakage and explosion caused by excessive pressure.

[0019] Energy saving: by reasonably controlling the pressure, reduce energy waste, and improve the energy utilization efficiency of the system. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, on the premise of not paying creative labor, other drawings can also be obtained according to these drawings.

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] Explanation of reference signs:

[0023] In the figure: 1, regulating valve A, 2, exhaust plug, 3, flange plate A, 4, pressure gauge A, 5, flange seat A, 6, sealing seat, 7, sealing gasket, 8, connecting bracket, 9, connecting rod, 10, body, 11, regulating valve seat, 12, support, 13, spring A, 14, fixing nut, 15, diaphragm, 16, upper top piece, 17, spring B, 18, lower top piece, 19, regulating valve B, 20, flange plate B, 21, flange seat B, 22, flange plate C, 23, pressure gauge B. DETAILED DESCRIPTION

[0024] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without one or more of these specific details. In other instances, well-known features have not been described in detail to avoid obscuring the present application.

[0025] Unless specifically defined otherwise, the terms "upper", "lower", "left", "right", "front", "rear", "inner" and "outer" and the like in this document refer to the orientation of the figures as shown in the figures, which are hereby incorporated by reference.

[0026] The connection mode can adopt existing modes such as bonding, welding, bolt connection, etc., and the actual needs are accurate.

[0027] A gas pressure reducing device, comprising a regulating valve A1, a flange plate A3, a pressure gauge A4, a flange seat A5, a connecting bracket 8, a connecting rod 9, a body 10, a regulating valve seat 11, a support 12, a spring A13, a diaphragm 15, an upper top piece 16, a spring B17, a lower top piece 18, a regulating valve B19, a flange plate B20, a flange seat B21, a flange plate C22 and a pressure gauge B23, one side of the regulating valve A1 is threadedly connected with the exhaust plug 2 through a sealing gasket, the other side of the regulating valve A1 is connected with one end of the flange plate A3, the other end of the flange plate A3 is threadedly connected with the connecting bracket 8, the flange plate A3 is provided with the pressure gauge A4, the flange plate A3 is connected with one end of the flange seat A5 through a bolt, the other end of the flange seat A5 is welded to one end of the body 10, the other end of the body 10 is welded with the regulating valve seat 11, the regulating valve seat 11 is connected with the flange plate B20 through a bolt, and the flange plate B20 is provided with the regulating valve B19 at the end thereof; the body 10 is welded with the flange seat B21 at the top thereof, the flange seat B21 is fixed with the flange plate C22 at the top thereof through a bolt, and the flange plate C22 is provided with the pressure gauge B23 at the top thereof.

[0028] The flange plate A3 is internally filled with a sealing seat 6, the sealing seat 6 is installed with a sealing gasket 7 at the end close to the connecting support 8, one end of the connecting rod 9 is screwed with the sealing seat 6 through the connecting support 8 and the sealing gasket 7, the other end of the connecting rod 9 is screwed with the fixed nut 14 through the adjusting valve seat 11, the support 12 and the spring A13, the fixed nut 14 is welded on one side of the diaphragm 15, the other side of the diaphragm 15 abuts on one side of the upper top sheet 16, the other side of the upper top sheet 16 is installed on one end of the spring B17, the other end of the spring B17 is installed on one side of the lower top sheet 18, the lower top sheet 18 is installed in the flange plate B20.

[0029] The flange plate A3 is installed with a sealing ring and a sealing gasket between the flange plate A3 and the flange seat A5.

[0030] The pressure gauge A4 has a range of 0-25MPa.

[0031] The pressure gauge B23 has a range of 0-4MPa.

[0032] The sealing seat 6 is made of copper.

[0033] The sealing gasket 7 is made of PTFE.

[0034] The diaphragm 15 is made of 304 stainless steel.

[0035] The upper top sheet 16 is crescent-shaped.

[0036] The body 10 is a tee.

[0037] Working principle:

[0038] Slowly open the regulating valve A1, make the high pressure gas into the flange plate A3; At this time, slowly adjust the regulating valve B19, the left end of the regulating valve B19 contacts the lower top sheet 18 and compresses the spring B17, the spring B17 pushes the upper top sheet 16 to move left, thereby pushing the diaphragm 15 to move left, because one side of the diaphragm 15 is fixed on one end of the connecting rod 9, thereby pushing the connecting rod 9 to move left, at this time, the sealing seat 6 and the sealing gasket 7 are away from the connecting support 8, therefore there is a small gap between the connecting support 8, the high pressure gas enters the annular cavity between the outer wall of the connecting rod 9 and the inner wall of the connecting support 8, thereby the gas enters the body 10, because the body 10 is communicated with the pressure gauge B23, at this time, the pressure of the pressure gauge B23 is closely observed, stop adjusting the regulating valve B19 when the pressure reaches the predetermined pressure; If the pressure displayed by the pressure gauge B23 is higher than the predetermined pressure, adjust the regulating valve B19 in the opposite direction, at this time, the lower top sheet 18 moves right, and the spring B17 drives the upper top sheet 16 to move right, the diaphragm 15 moves right under the elastic force of the spring A13 and contacts the upper top sheet 16, at this time, the diaphragm 15 drives the connecting rod 9 to move right, the gap between the sealing seat 6 and the sealing gasket 7 and the connecting support 8 becomes smaller, the gas flowing into the annular cavity between the outer wall of the connecting rod 9 and the inner wall of the connecting support 8 is reduced, the gas pressure in the body 10 is reduced, thereby achieving the purpose of pressure reduction.

[0039] It is to be understood that the terminology used herein such as particular-ty and second is only used to distinguish one entity or operation from another entity or operation and does not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the statement "including a limited element" does not exclude the existence of another same element in the process, method, article or equipment including the element.

[0040] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A gas pressure reducing device, comprising a regulating valve A, a flange A, a pressure gauge A, a flange seat A, a connecting bracket, a connecting rod, a body, a regulating valve seat, a support, a spring A, a diaphragm, an upper top plate, a spring B, a lower top plate, a regulating valve B, a flange B, a flange seat B, a flange C, and a pressure gauge B, characterized in that: One side of the regulating valve A is threadedly connected to the vent plug via a sealing gasket, and the other side of the regulating valve A is connected to one end of the flange A. A connecting bracket is threadedly connected to the other end of the flange A, and a pressure gauge A is installed on the flange A. The flange A is bolted to one end of the flange seat A, and the other end of the flange seat A is welded to one end of the body. A regulating valve seat is welded to the other end of the body, and the regulating valve seat is bolted to the flange B. A regulating valve B is installed at the end of the flange B. A flange seat B is welded to the top of the body, and a flange C is bolted to the top of the flange seat B. A pressure gauge B is installed on the top of the flange C. The flange A is filled with a sealing seat. A sealing gasket is installed at the end of the sealing seat near the connecting bracket. One end of the connecting rod passes through the connecting bracket and the sealing gasket and is threaded to the sealing seat. The other end of the connecting rod passes through the regulating valve seat, the support, and the spring A and is threaded to the fixing nut. The fixing nut is welded to one side of the diaphragm. The other side of the diaphragm abuts against one side of the upper top plate. The other side of the upper top plate is installed at one end of the spring B. The other end of the spring B is installed at one side of the lower top plate. The lower top plate is installed inside the flange B.

2. The gas pressure reducing device according to claim 1, characterized in that: A sealing ring and a sealing gasket are installed between flange A and flange seat A.

3. A gas pressure reducing device according to claim 1, characterized in that: The pressure gauge A has a range of 0-25 MPa.

4. A gas pressure reducing device according to claim 1, characterized in that: The pressure gauge B has a range of 0-4 MPa.

5. A gas pressure reducing device according to claim 1, characterized in that: The sealing seat is made of copper.

6. A gas pressure reducing device according to claim 1, characterized in that: The sealing gasket is made of PTFE.

7. A gas pressure reducing device according to claim 1, characterized in that: The diaphragm is made of 304 stainless steel.

8. A gas pressure reducing device according to claim 1, characterized in that: The top plate is crescent-shaped.

9. A gas pressure reducing device according to claim 1, characterized in that: The main body is a three-way connector.

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