Parallel double-cavity coordinated regulation gas pressure regulator

Abstract

This utility model relates to a parallel dual-chamber coordinated gas pressure regulator, including an inlet pipe assembly for inputting gas and an outlet pipe assembly for outputting gas. The inlet pipe assembly is connected to the outlet pipe assembly via a dual-chamber valve body. The dual-chamber valve body includes two symmetrically arranged valve shells, a deformable module capable of separating the cavities of the valve shells, and a linkage mechanism that simultaneously inserts into both valve shells and connects to the deformable diaphragm assembly within the valve shells. The end of the deformable module furthest from the linkage mechanism is also connected via a transmission rod to an intake regulating valve embedded in the intake port of the valve shell. This utility model improves the stability of the gas output from the combined pressure regulating chamber structure by constructing two parallelly arranged and alternately inlet regulating chambers.

Description

Technical Field

[0001] This utility model relates to the field of gas pressure regulating equipment technology, and in particular to a gas pressure regulator with parallel dual-chamber coordinated regulation. Background Technology

[0002] A gas pressure regulator is a pressure reducer specifically used in pipelines transporting fluid media. Pipelines transporting natural gas and other combustible gases are called gas pipelines, and ensuring the safe and stable use of gas by users hinges on the stability of gas pressure within these pipelines. As a key component of gas pipelines, a gas pressure regulator automatically adjusts the gas flow through its valve body, ensuring that the outlet pressure remains within a predetermined range regardless of fluctuations in inlet pressure. A gas pressure regulating valve, also known as a gas pressure regulator, is a device that maintains a constant outlet pressure by automatically regulating the gas flow. Current gas pressure regulator designs include an upper and lower gas chamber separated by a diaphragm. The lower chamber has a gas inlet (for input gas) and an outlet (for output gas) on its different end walls. A flow control valve, linked to the diaphragm, is located at the gas inlet. The opening and closing of the gas inlet is achieved by the opening and closing of the flow control valve, allowing the deformation of the diaphragm to regulate the opening and closing of the flow control valve. For example, a gas pressure regulator disclosed in CN109505989B includes a valve body with an inlet and an outlet, and a diaphragm assembly. The diaphragm assembly includes an upper diaphragm, a lower diaphragm, and a spring disposed between the upper and lower diaphragms. The upper and lower diaphragms are connected to the valve body and a transmission rod is connected to them. A valve stem is connected to the lower part of the transmission rod via a lever, and a valve core is connected to the valve stem. A compression spring is disposed between the upper diaphragm and the lower valve body. By employing a double-layer diaphragm design, the structural strength and durability are improved, the rate of damage due to periodic deformation is reduced, and the service life is extended. However, the gas pressure regulator is designed with only a single pressure regulating valve chamber, which results in a significant difference in the compression strength of the valve chamber space generated by the diaphragm in the later stage of deformation and the early stage of deformation. This causes the pressure driving force provided by the diaphragm for the directional discharge of gas in the early stage and the later stage of deformation to be inconsistent, resulting in a deviation in the instantaneous intensity of gas discharge. It is impossible to guarantee the stability of gas output at the end of the valve chamber volume reduction period, and it is very easy for output gas pressure fluctuations to occur at the end of the deformation and pressure application period when the diaphragm is about to return to the planar shape. Utility Model Content

[0003] The purpose of this invention is to provide a parallel dual-chamber coordinated gas pressure regulator that can improve the stability of the gas output from the combined structure of two pressure regulating chambers by constructing two parallel and interconnected pressure regulating chambers that alternately introduce gas. This solves the problem that in existing gas pressure regulators, the pressure provided by the diaphragm in a single pressure regulating chamber decreases gradually during a single reset deformation process, making it difficult to ensure that the diaphragm can maintain a constant pressure to drive the gas exhaust at the end of the reset deformation, which easily leads to fluctuations in the gas output pressure.

[0004] The technical solution adopted in this utility model is as follows: a parallel dual-cavity coordinated regulating gas pressure regulator, including an inlet pipe group for inputting gas and an outlet pipe group for outputting gas. The inlet pipe group is connected to the outlet pipe group through a dual-cavity valve body. The dual-cavity valve body includes two symmetrically arranged valve shells, a deformable module that can divide the cavity of the valve shell, and a linkage mechanism that is simultaneously inserted into the two valve shells and connected to the deformable membrane group inside the valve shell. The end of the deformable module away from the linkage mechanism is also connected to the intake regulating valve embedded in the intake port of the valve shell through a transmission rod.

[0005] According to a preferred embodiment, the valve housing includes a first half-shell and a second half-shell that can be joined together to form a closed cavity, wherein the air inlet is inserted into the shell wall of the first half-shell away from the second half-shell; and a connecting sleeve and a positioning link are provided on the shell wall of the second half-shell of both valve housings away from the first half-shell.

[0006] According to a preferred embodiment, the positioning ring frame of the deformable module is fitted between the mating end faces of the first half-shell and the second half-shell to separate the cavity defined by the first half-shell from the cavity defined by the second half-shell; a first diaphragm and a second diaphragm that are parallel to each other are fixedly connected to the inner ring surface of the positioning ring frame, wherein a connecting spring is provided between the first diaphragm and the second diaphragm.

[0007] According to a preferred embodiment, a connecting sleeve is centrally embedded on the first diaphragm and the second diaphragm, and the two connecting sleeves are fitted onto the same pull rod; one end of the pull rod is connected to the transmission rod, and an auxiliary limiting spring is also connected to the end face of the pull rod facing the second half-shell.

[0008] According to a preferred embodiment, the linkage structure includes a sliding insert rod that is slidably inserted into the connecting sleeve and a linkage end rod connected to both ends of the sliding insert rod and connected to the pull rod, wherein the rod section of the linkage end rod located within the second half-shell passes through the auxiliary limiting spring.

[0009] According to a preferred embodiment, the intake regulating valve includes a horizontally mounted air guide baffle in the intake port, a guide sleeve inserted in the air guide baffle, an adjusting slide rod movably inserted in the guide sleeve, and a baffle that can block the air guide holes on the air guide baffle and is connected to the adjusting slide rod.

[0010] According to a preferred embodiment, one end of the adjusting slide bar extending into the first half-shell is connected to the transmission rod.

[0011] According to a preferred embodiment, a gas outlet port capable of outputting the gas inside the valve cavity is also inserted through the side of the valve housing.

[0012] The beneficial effects of this utility model are:

[0013] The two valve bodies provided in this application can form parallel gas pressure reducing chambers, and the deformable diaphragm groups in the two valve bodies are linked by a linkage mechanism, so that the deformation processes of the two deformable diaphragm groups are linked, allowing the two deformable diaphragm groups to alternately complete expansion deformation and reset deformation. That is, while one deformable diaphragm group undergoes expansion deformation, the other deformable diaphragm group simultaneously undergoes reset deformation. Furthermore, the intake regulating valve and the deformable diaphragm groups are linked and synchronously change their opening and closing states, so that the two deformable diaphragm groups can achieve mutual compensation of the output pressure of the two gas streams by post-convergence through the parallel flow channels defined by the two, so that the converged gas can achieve a stable and continuous output. During the above process, the pressurization drive provided by the deformable membrane module that undergoes reset deformation is insufficient to provide a sufficiently high pressure for the output gas stream. At this point, the deformable membrane module that undergoes expansion deformation can provide a high-pressure gas stream, so that the final gas stream output after the two gas streams converge can be integrated with average intensity. This allows the pressurization peak of one deformable module to coincide with the pressurization trough of the other deformable module at the same time point. This mutual compensation of the gas streams driven by the two sinusoidal pressurization forces can improve the stability of the actual output gas stream, reduce fluctuations in gas output, and enhance the stability of continuous gas flow output.

[0014] This application uses a parallel dual-chamber pressure regulating structure to compensate for insufficient gas pressure and flow at the end of a single extrusion exhaust in a single pressure regulating chamber by utilizing the peak airflow in the other pressure regulating chamber. This alternating intake of the two chambers achieves continuous exhaust while also providing staged alternating compensation, thereby improving the stability of pressure reduction gas supply and the uniformity of the output gas flow.

[0015] This application reduces the impact on the diaphragm during high-pressure gas injection by setting an upper diaphragm structure, thereby improving overall elasticity and stability, and enhancing overall service life and structural robustness. Furthermore, a connecting spring and a supporting limiting block are installed between the first and second diaphragms to limit the gap between them when they undergo bending deformation, indirectly mitigating the expansion impact and effectively preventing distance-related impacts on the diaphragms, thus extending their service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a preferred parallel dual-chamber coordinated regulation gas pressure regulator proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the dual-chamber valve body of a preferred parallel dual-chamber coordinated regulation gas pressure regulator proposed in this utility model;

[0018] Figure 3 This is a partially enlarged structural diagram of part A of a preferred parallel dual-cavity coordinated regulating gas pressure regulator proposed in this utility model;

[0019] Figure 4 This is a partially enlarged structural diagram of part B of a preferred parallel dual-cavity coordinated regulating gas pressure regulator proposed in this utility model.

[0020] List of reference numerals

[0021] 1: Inlet pipe assembly; 2: Outlet pipe assembly; 3: Dual-chamber valve body; 11: Main inlet pipe; 12: Inlet branch pipe; 21: Main outlet pipe; 22: Outlet branch pipe; 31: Valve housing; 32: Deformable module; 33: Linkage mechanism; 34: Transmission rod; 35: Inlet regulating valve; 36: Inlet port; 37: Outlet port; 311: First half-shell; 312: Second half-shell; 313: Flange ring; 314: Connecting... 315: Positioning connecting rod; 321: Positioning ring frame; 322: First diaphragm; 323: Second diaphragm; 324: Connecting sleeve; 325: Pull rod; 326: Auxiliary limiting spring; 327: Connecting spring; 331: Sliding insert rod; 332: Linkage end rod; 351: Air guide plate; 352: Guide sleeve; 353: Adjusting slide rod; 354: Baffle; 3511: Air guide hole. Detailed Implementation

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] The technical solutions provided by this utility model will be described in detail below with reference to the accompanying drawings and through embodiments. It should be noted that the descriptions of these embodiments are for the purpose of helping to understand this utility model, but do not constitute a limitation thereof. In some examples, because some implementation methods belong to existing or conventional technology, they are not described or are not described in detail. The serial numbers assigned to components in this document, such as "first," "second," etc., are only used to distinguish the described objects and do not have any sequential or technical meaning.

[0024] The following is a detailed explanation with reference to the accompanying drawings.

[0025] Example 1

[0026] This application provides a gas pressure regulator with parallel dual-chamber coordinated regulation, which includes an inlet pipe group 1, an outlet pipe group 2, and a dual-chamber valve body 3.

[0027] according to Figure 1-4In one specific embodiment, the input port of the inlet pipe assembly 1 and the output port of the outlet pipe assembly 2 are both connected to the exhaust port and inlet port of different gas transmission pipelines via flange structures, thereby realizing directional input and directional output of gas respectively. The inlet pipe assembly 1 is connected to the outlet pipe assembly 2 via a dual-chamber valve body 3. The dual-chamber valve body 3 includes two symmetrically arranged valve shells 31, a deformable module 32 capable of separating the cavities of the valve shells 31, and a linkage mechanism 33 that is simultaneously inserted into the two valve shells 31 and connected to the deformable membrane assembly 32 within the valve shells 31. The end of the deformable module 32 away from the linkage mechanism 33 is also connected via a transmission rod 34 to an intake regulating valve 35 embedded in the inlet port 36 of the valve shell 31. An outlet port 37 capable of outputting the gas within its cavity is also inserted through the side of the valve shell 31. The two valve housings 31 provided in this application can form parallel gas pressure reducing chambers, and the deformable diaphragm groups 32 in the two valve housings 31 are linked by the linkage mechanism 33, so that the deformation processes of the two deformable diaphragm groups 32 are linked, so that the two deformable diaphragm groups 32 can alternately complete expansion deformation and reset deformation. That is, when one deformable diaphragm group 32 expands, the other deformable diaphragm group 32 simultaneously resets. The intake regulating valve 35 is linked with the deformable diaphragm group 32 and changes its opening and closing state synchronously, so that the two deformable diaphragm groups 32 can achieve mutual compensation of the output pressure of the two gas streams by post-convergence through the parallel flow channels defined by the two, so that the converged gas can achieve stable and continuous output. During the above process, the pressurization drive provided by the deformable membrane module 32 that undergoes reset deformation is insufficient to provide a sufficiently high pressure for the output gas stream. At this time, the deformable membrane module 32 that undergoes expansion deformation can provide a high-pressure gas stream, so that the final gas stream output after the two gas streams converge can be integrated with average intensity. This allows the pressurization peak of one deformable module 32 to coincide with the pressurization trough of the other deformable module 32 at the same time point. This utilizes the mutual compensation of the gas streams driven by the two sinusoidal pressurization forces to improve the stability of the actual output gas stream, reduce fluctuations in gas output, and enhance the stability of continuous gas flow output.

[0028] Preferably, the inlet pipe assembly 1 includes an inlet main pipe 11 and two inlet branch pipes 12 arranged in parallel at the output ends of the inlet main pipe 11. More preferably, the output ends of the inlet branch pipes 12 are connected to the air inlet port 36. Preferably, the inlet main pipe 11 is connected to the two inlet branch pipes 12 arranged in parallel as branch pipes by welding to ensure the sealing of the pipe body. Preferably, both the output end of the inlet branch pipe 12 and the input end of the air inlet port 36 are provided with matching connecting flanges, thereby achieving a sealed connection between the inlet branch pipe 12 and the air inlet port 36 through a flange structure that is connected relative to each other and limited by bolts. More preferably, a sealing gasket is embedded on the mating end face of the connecting flange to ensure the sealing of the mating. Preferably, a one-way input valve that can limit the one-way input of gas is also provided in the cavity of the inlet branch pipe 12 by means of interference fit or bolt positioning.

[0029] Preferably, the outflow pipe assembly 2 includes an outflow main pipe 21 and two outflow branch pipes 22 arranged in parallel at the input end of the outflow main pipe 21. More preferably, the input end of the outflow branch pipe 22 is connected to the outflow port 37. Preferably, the outflow main pipe 21 is connected to the two outflow branch pipes 22 arranged in parallel as branching tributaries by welding to ensure the sealing of the pipe body. Preferably, the output end of the outflow branch pipe 22 and the input end of the outflow port 37 are both provided with matching connecting flanges, thereby achieving a sealed connection between the outflow branch pipe 22 and the outflow port 37 through a flange structure that is connected relative to each other and limited by bolts. More preferably, a sealing gasket is embedded on the mating end face of the connecting flange to ensure the sealing of the mating. Preferably, a one-way output valve that can limit the one-way output of gas is also provided in the cavity of the outflow branch pipe 22 by means of interference fit or bolt positioning.

[0030] Preferably, the valve housing 31 includes a first half-shell 311 and a second half-shell 312 that can be assembled together to form a closed cavity. Preferably, flange rings 313 are integrally cast on the outer side of the mating openings of the first half-shell 311 and the second half-shell 312, so that when the first half-shell 311 and the second half-shell 312 are mated, the two flange rings 313 are stacked without gaps, and the relative position between the two is locked by bolt and nut assemblies inserted into the two flange rings 313, ensuring the stability of the first half-shell 311 and the second half-shell 312 when mated. Preferably, a circular step is provided on the opening annular surface of the first half-shell 311 to limit the positioning ring frame 321 of the deformable module 32. Specifically, sealing gaskets are embedded on both non-equal annular surfaces of the circular step, and sealing gaskets are also embedded in the port annular area where the second half-shell 312 abuts against the positioning ring frame 321. This achieves a sealed connection between the first half-shell 311 and the second half-shell 312 to form a closed shell cavity, and the deformable module 32 effectively separates the chambers of the closed shell cavity, thus forming two non-communicating sub-chambers. Preferably, an air inlet 36 is inserted into the shell wall of the first half-shell 311 away from the second half-shell 312. Preferably, on the shell walls of the second half-shell 312 of the two valve shells 31 away from the first half-shell 311, a connecting sleeve 314 and a positioning connecting rod 315 capable of coaxial connection are provided in a manner that defines the connection posture between the two. Preferably, external threads are provided on the outer end surfaces of the connecting sleeves 314 and the positioning rods 315 on the shell walls of the two second half shells 312, so that the connection between the two is achieved by using internal threaded sleeves of different specifications and matching, so as to ensure the coaxial and internal cavity communication of the two connecting sleeves 314, and thus realize the mutual connection of the two valve shells 31.

[0031] Preferably, the positioning ring frame 321 of the deformable module 32 is engaged between the mating end faces of the first half-shell 311 and the second half-shell 312 to separate the cavity defined by the first half-shell 311 from the cavity defined by the second half-shell 312. Preferably, a first diaphragm 322 and a second diaphragm 323, which are parallel to each other, are fixedly connected to the inner ring surface of the positioning ring frame 321. Preferably, the outer edges of the first diaphragm 322 and the second diaphragm 323 are both engaged in the inner ring sidewall of the positioning ring frame 321, and the positioning ring frame 321 is fixedly connected to the first diaphragm 322 and the second diaphragm 323 by countersunk screws inserted into its top surface. A connecting spring 327 is provided between the first diaphragm 322 and the second diaphragm 323. Preferably, a support limiting block is also provided on the surface of the second diaphragm 323 within the connecting spring 327 to limit the maximum compression of the connecting spring 327 and to limit the positioning of the first diaphragm 322 and the second diaphragm 323, thereby limiting the minimum gap between them when they undergo bending deformation. Preferably, the two ends of the connecting spring 327 can be fixed to the surfaces of the first diaphragm 322 and the second diaphragm 323 by means of adhesive plates or other structures, and the support limiting block is adhered to the surface of the second diaphragm 323. Specifically, the connection method of the above structure can refer to the relevant structure of the diaphragm assembly 3 in the prior art patent with patent number CN109505989B. Preferably, a connecting sleeve 324 is centrally embedded on the first diaphragm 322 and the second diaphragm 323. Specifically, the first diaphragm 322 and the second diaphragm 323 have a centrally located through hole for mounting the connecting sleeve 324, and the outer side of the connecting sleeve 324 has an annular groove for accommodating a portion of the first diaphragm 322 and the second diaphragm 323. Preferably, the connecting sleeve 324 has a shoe buckle-like structure, which can effectively fix and clip onto the diaphragm body. More preferably, the connecting sleeve 324 can also adopt an assembly ring structure, so that it can be clamped onto the first diaphragm 322 and the second diaphragm 323, and while pulling the first diaphragm 322 and the second diaphragm 323, a centrally located connecting through hole is formed. More preferably, the two connecting sleeves 324 are fitted onto the same pull rod 325. Preferably, one end of the pull rod 325 is connected to the transmission rod 34 by welding or connecting threaded sleeve, so that the two can move axially synchronously. Specifically, both ends of the pull rod 325 are equipped with anti-disengagement rings through welding or threaded connections, thereby effectively restricting the fitting position of the connecting sleeve 324 on its rod body. Preferably, an auxiliary limiting spring 326 is connected to the end face of the pull rod 325 facing the second half-shell 312. The end of the auxiliary limiting spring 326 away from the pull rod 325 is connected to the inner shell wall of the second half-shell 312. Preferably, both ends of the auxiliary limiting spring 326 are fixedly connected to the end face of the pull rod 325 and the inner shell wall of the second half-shell 312 by welding or bolt clamp positioning.Specifically, the auxiliary limiting spring 326 maintains its original length without extension when the second diaphragm 323 is in a planar state. When high-pressure gas is filled into the first half-shell 311, causing the first and second diaphragms 322 and 323 to bend and deform into curved surfaces, the auxiliary limiting spring 326 undergoes equidistant compression. This application reduces the impact of high-pressure gas filling on the diaphragm by setting an upper diaphragm structure, thereby improving overall elasticity and stability, and enhancing overall service life and structural stability. Furthermore, a connecting spring 327 and a supporting limiting block are provided between the first and second diaphragms 322 and 323 to limit the interval when the first and second diaphragms 322 and 323 bend and deform, thereby indirectly mitigating the expansion impact and effectively preventing distance impact on the diaphragms, extending their service life.

[0032] Preferably, the linkage structure 33 includes a sliding insert rod 331 slidably inserted into the connecting sleeve 314 and a linkage end rod 332 connected to both ends of the sliding insert rod 331 and connected to the pull rod 325. Preferably, the rod section of the linkage end rod 332 within the second half-shell 312 passes through the auxiliary limiting spring 326. Preferably, a sealing ring capable of filling the assembly gap between the sliding insert rod 331 and the cavity of the connecting sleeve 314 is embedded in the inner wall surface of the connecting sleeve 314.

[0033] Preferably, the intake regulating valve 35 includes a guide baffle 351 horizontally embedded in the intake port 36, a guide sleeve 352 inserted into the guide baffle 351, an adjusting slide rod 353 movably inserted into the guide sleeve 352, and a baffle 354 that can block the air guide hole 3511 on the guide baffle 351 and is connected to the adjusting slide rod 353. Preferably, the guide baffle 351 can be embedded in the cavity of the intake port 36 by welding or other means, thereby cutting off the cavity of the intake port 36. Preferably, the guide sleeve 352 has a non-circular cavity channel, and the adjusting slide rod 353 has a rod cross-section adapted to the cavity channel of the guide sleeve 352. Preferably, one end of the adjusting slide rod 353 extending into the first half-shell 311 is connected to the transmission rod 34. Specifically, an anti-disengagement block is provided at one end of the adjusting slide rod 353 connected to the transmission rod 34 to limit the axial sliding threshold of the adjusting slide rod 353 that is slidably inserted in the guide sleeve 352.

[0034] Preferably, the inlet port 36 is inserted into the wall of the valve housing 31 by penetrating the wall of the valve housing 31 to input gas into the cavity of the valve housing 31. Specifically, the outlet port 37 is inserted into the side wall of the first half-shell 311. More preferably, both the inlet port 36 and the outlet port 37 are fixedly connected to the valve housing 31 by seamless welding to ensure the airtightness of the structure and the connectivity of the internal flow channels.

[0035] For surface connections between components not explicitly specified in this application, conventional bolt connections, snap-fit ​​connections, or fixed connections such as welding can be used. As these are conventional connection methods, this application will not elaborate further on this part. Specifically, the connecting ends of the assembled components all form flange structures, and the two flange structures are connected by bolts, gaskets, or other structures.

[0036] This utility model is not limited to the above-described optional embodiments. Anyone can derive other various forms of products under the guidance of this utility model. However, regardless of any changes in shape or structure, any technical solution falling within the scope of the claims of this utility model is within the protection scope of this utility model. Those skilled in the art should understand that this utility model specification and its drawings are illustrative and do not constitute a limitation on the claims. The protection scope of this utility model is defined by the claims and their equivalents. Throughout the text, features introduced by "preferred" are merely optional and should not be construed as mandatory. Therefore, the applicant reserves the right to abandon or delete relevant preferred features at any time.

Claims

1. A parallel dual-chamber coordinated gas pressure regulator, comprising an inlet pipe assembly (1) for inputting gas and an outlet pipe assembly (2) for outputting gas, characterized in that, The inlet pipe assembly (1) is connected to the outlet pipe assembly (2) via a double-chamber valve body (3), wherein, The dual-chamber valve body (3) includes two symmetrically arranged valve shells (31), a deformable membrane assembly (32) that can separate the cavities of the valve shells (31), and a linkage mechanism (33) that is simultaneously inserted into the two valve shells (31) and connected to the deformable membrane assembly (32) inside the valve shells (31). The deformable membrane assembly (32) is also connected to the intake regulating valve (35) embedded in the intake port (36) of the valve housing (31) via a transmission rod (34) at one end away from the linkage mechanism (33).

2. The gas pressure regulator with parallel dual-chamber coordinated regulation as described in claim 1, characterized in that, The valve housing (31) includes a first half-shell (311) and a second half-shell (312) that can be assembled together to form a closed cavity. The air inlet (36) is inserted into the shell wall of the first half shell (311) away from the second half shell (312). A connecting sleeve (314) and a positioning link (315) are provided on the shell wall of the second half shell (312) of the two valve shells (31) away from the first half shell (311).

3. The gas pressure regulator with parallel dual-chamber coordinated regulation as described in claim 2, characterized in that, The positioning ring (321) of the deformable membrane assembly (32) is fitted between the mating end faces of the first half shell (311) and the second half shell (312) to separate the cavity defined by the first half shell (311) from the cavity defined by the second half shell (312). A first diaphragm (322) and a second diaphragm (323) are fixedly connected to each other on the inner ring surface of the positioning ring frame (321), wherein a connecting spring (327) is provided between the first diaphragm (322) and the second diaphragm (323).

4. The gas pressure regulator with parallel dual-chamber coordinated regulation as described in claim 3, characterized in that, A connecting sleeve (324) is centrally fitted on the first diaphragm (322) and the second diaphragm (323), and the two connecting sleeves (324) are fitted onto the same pull rod (325); One end of the pull rod (325) is connected to the transmission rod (34), and an auxiliary limiting spring (326) is also connected to the end face of the pull rod (325) facing the second half shell (312).

5. The gas pressure regulator with parallel dual-chamber coordinated regulation as described in claim 4, characterized in that, The linkage mechanism (33) includes a sliding insert rod (331) that is slidably inserted into the connecting sleeve (314) and a linkage end rod (332) connected to both ends of the sliding insert rod (331) and connected to the pull rod (325), wherein, The section of the linkage end rod (332) located inside the second half-shell (312) passes through the auxiliary limiting spring (326).

6. The gas pressure regulator with parallel dual-chamber coordinated regulation as described in claim 5, characterized in that, The intake regulating valve (35) includes a guide baffle (351) horizontally embedded in the intake port (36), a guide sleeve (352) inserted on the guide baffle (351), an adjusting slide rod (353) movably inserted in the guide sleeve (352), and a baffle (354) that can block the air guide hole (3511) on the guide baffle (351) and is connected to the adjusting slide rod (353).

7. The gas pressure regulator with parallel dual-chamber coordinated regulation as described in claim 6, characterized in that, The adjusting slide bar (353) extends into one end of the first half-shell (311) and is connected to the transmission rod (34).

8. The gas pressure regulator with parallel dual-chamber coordinated regulation as described in claim 7, characterized in that, A gas outlet (37) capable of outputting the gas in its cavity is also inserted through the side of the valve body (31).

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