Voltage regulator base and voltage regulator

Abstract

The utility model discloses a pressure regulator base and a pressure regulator, and relates to the technical field of gas transmission and distribution, the pressure regulator base comprises a main body, a flow channel is arranged in the main body, a gas inlet valve and a gas outlet valve are arranged on the main body, a filter element mounting port, a main regulating assembly mounting port and a cutting assembly mounting port are further formed in the main body, and the filter element mounting port is close to the gas inlet end of the flow channel. The main adjusting assembly mounting opening is close to the air outlet end of the flow channel and is opposite to the cutting assembly mounting opening. The gas inlet valve, the gas outlet valve, the filter element, the main adjusting assembly and the cut-off assembly can be installed on the pressure regulator base at the same time, the installation requirement can be met without additional pipelines, the number of connecting positions is small, the integration degree is high, the gas leakage risk is reduced, and meanwhile the size of the pressure regulator can be reduced. The interfaces are arranged in a scattered manner, interference of installed equipment is avoided, and overhaul and maintenance are facilitated. The pressure regulator comprises a filter element, a main regulation assembly, a cut-off assembly and a pressure regulator base, and the functions of filtering impurities in fuel gas, regulating the pressure of the fuel gas and protecting cut-off are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas transmission and distribution technical field, especially a kind of pressure regulator base and pressure regulator. BACKGROUND

[0002] Building pressure regulator is a kind of integrated filter, pressure regulating assembly, cut-off assembly, inlet valve, outlet valve, pipeline and instrument process equipment combination type wall-hanging equipment, is arranged in the wall-hanging building pressure regulating box, has been widely used in urban gas residential area, small and medium-sized industrial and commercial users and other scenes. Urban gas application 100Nm 3 / h (standard cubic meter per hour) above flow specification needs large flow pressure regulating box to meet the demand, however, the building gas pressure regulating box of prior art has some problems. First, building pressure regulator in prior art is usually simply filter, pressure regulating assembly, cut-off assembly, inlet valve, outlet valve, pipeline and instrument, simple assembly of existing equipment, product structure size is subjected to the structure after combination of above-mentioned finished product general equipment, and there are more flange joints or threaded joints, and joint position is prone to gas leakage phenomenon, brings security risk. Secondly, pressure regulating assembly, valve, filter and other equipment are standard size, and the integration degree is not high after combination installation, and flange interface or threaded interface for connecting each component occupies larger space, so that the volume of building pressure regulating box is larger. Thirdly, in prior art, pressure regulator has more integrated independent equipment and is constrained by pipeline structure, must be assembled in a certain order during assembly, otherwise there is space limitation to cause assembly misplacement or interference, especially under the condition that there is lack of tooling, hoisting and other facilities in use site, maintenance difficulty is extremely great. When handling some faults, it must also be disassembled in a certain order, which brings inconvenience to equipment maintenance. UTILITY MODEL CONTENTS

[0003] The utility model aims at providing a kind of pressure regulator base to solve the problems existing in prior art, inlet valve, outlet valve, filter, main regulating assembly and cut-off assembly can be installed on pressure regulator base simultaneously, without additional pipeline to meet installation requirements, less connection position, high integration degree, reduce the risk of gas leakage while also reducing the size of pressure regulator. Various interfaces are dispersedly arranged, avoid interference of installed equipment, facilitate maintenance and maintenance.

[0004] The utility model also provides a kind of pressure regulator, including above-mentioned pressure regulator base, in addition to above-mentioned technical effect, main regulating assembly can adjust the gas pressure discharged through gas passage, when gas pressure exceeds threshold value, cut-off assembly can seal gas passage and interrupt exhaust. Before passing through gas passage, all gas can be filtered, ensure cleanliness.

[0005] To achieve the above object, the utility model provides the following scheme:

[0006] The utility model provides a kind of voltage regulator base, including main body, flow channel is arranged in the main body, the air inlet valve of the air inlet end of the flow channel and the air outlet valve of the air outlet end of the flow channel are arranged on the main body, filter core installation port, main tuning component installation port and cut-off component installation port being communicated with the flow channel are also opened on the main body, the filter core installation port is close to the air inlet end of the flow channel, the main tuning component installation port is close to the air outlet end of the flow channel, the main tuning component installation port is oppositely arranged with the cut-off component installation port, valve port fixed in the flow channel is arranged between the main tuning component installation port and the cut-off component installation port.

[0007] In one embodiment, the air outlet end of the air inlet valve is fixedly connected with the air inlet end of the flow channel by fastener, and the air inlet end of the air outlet valve is fixedly connected with the air outlet end of the flow channel by fastener.

[0008] In one embodiment, the air inlet valve and the main body are integrated structure, and the air outlet valve and the main body are integrated structure.

[0009] In one embodiment, air inlet pressure gauge is arranged on the main body, and the detection end of the air inlet pressure gauge is communicated with the flow channel, and the air inlet pressure gauge is close to the air inlet valve.

[0010] In one embodiment, air outlet pressure gauge is arranged on the main body, and the detection end of the air outlet pressure gauge is communicated with the flow channel, and the air outlet pressure gauge is close to the air outlet valve.

[0011] In one embodiment, pressure measuring nozzle is arranged on the main body, the air inlet end of the pressure measuring nozzle is communicated with the flow channel, the air outlet end of the pressure measuring nozzle is provided with openable pressure measuring interface, and the pressure measuring nozzle is close to the air outlet valve.

[0012] In one embodiment, three-way pipe is arranged on the main body, the measurement end of the air outlet pressure gauge is communicated with the first end of three-way pipe, the air inlet end of the pressure measuring nozzle is communicated with the second end of three-way pipe, the third end of three-way pipe is communicated with the flow channel, and needle valve is further communicated between the measurement end of the air outlet pressure gauge and the first end of three-way pipe.

[0013] The utility model discloses still provide a pressure regulator, including filter core, main adjustment subassembly, cut off subassembly and above-mentioned pressure regulator base, the filter core inserts filter core installation mouth, the filter core with main body fixed connection, set up filter core cover on filter core installation mouth, the filter core blocks the flow channel, the air inlet of filter core is communicated close to the flow channel of air inlet valve, the air outlet of filter core is communicated close to the flow channel of main adjustment subassembly, the main adjustment valve core of main adjustment subassembly is from main adjustment subassembly installation mouth and is located in the air outlet side of valve port, and main adjustment subassembly with main body fixed connection, and the cut off valve core of cut off subassembly is from cut off subassembly installation mouth and is located in the air inlet side of valve port, and cut off subassembly with main body fixed connection.

[0014] In one embodiment, the main adjustment subassembly is one of a low-pressure main adjustment subassembly, a medium-pressure main adjustment subassembly, or a high-pressure main adjustment subassembly, the cut off subassembly is one of a low-pressure cut off subassembly, a medium-pressure cut off subassembly, or a high-pressure cut off subassembly, the low-pressure main adjustment subassembly matches the low-pressure cut off subassembly, the medium-pressure main adjustment subassembly matches the medium-pressure cut off subassembly, and the high-pressure main adjustment subassembly matches the high-pressure cut off subassembly.

[0015] In one embodiment, the main adjustment valve core is provided with a first internal pressure signal feedback pipe, a first end of the first internal pressure signal feedback pipe is communicated with the inside of the main adjustment valve core, and a second end of the first internal pressure signal feedback pipe extends to the air outlet end of the flow channel, the cut off valve core is provided with a second internal pressure signal feedback pipe, a first end of the second internal pressure signal feedback pipe is communicated with the inside of the cut off valve core, and a second end of the second internal pressure signal feedback pipe extends to the air outlet end of the flow channel.

[0016] The utility model discloses relative to prior art has obtained following technical effect:

[0017] The utility model provides a pressure regulator base, air inlet valve, air outlet valve, filter core, main adjustment subassembly and cut off subassembly can be installed simultaneously on pressure regulator base, need not additional pipeline to satisfy installation requirement, and the position of connection is less, and the degree of integration is high, reduces the risk of gas leakage, and also can reduce the size of pressure regulator. Various interfaces are dispersedly arranged, avoid the interference of installed equipment, facilitate overhaul and maintenance.

[0018] Other technical schemes of the utility model relative to prior art have obtained following technical effect:

[0019] 1、The utility model discloses, air inlet valve and air outlet valve can be dismantled, and it is convenient for maintenance and replacement.

[0020] 2. In the utility model, the pressure measuring nozzle can be connected with a pressure gauge, and whether the pressure regulator is qualified can be detected during installation and debugging. During work, the external pressure gauge and the outlet pressure gauge can be compared to determine whether the outlet pressure gauge is working normally.

[0021] 3. In the utility model, the pressure measuring nozzle and the outlet pressure gauge are integrated on the same tee joint, and the structure is compact. The needle valve is arranged between the outlet pressure gauge and the tee joint, and when the outlet pressure gauge fails, the needle valve can cut off the communication between the outlet pressure gauge and the tee joint, so that the outlet pressure gauge can be replaced without stopping the work of the pressure regulator. During replacement of the outlet pressure gauge, the outlet pressure can be continuously monitored through the external pressure gauge.

[0022] 4. The utility model also provides a pressure regulator, which comprises a filter element, a main adjusting assembly, a cutting assembly and the above-mentioned pressure regulator base. The inlet valve, the outlet valve, the filter element, the main adjusting assembly and the cutting assembly can be simultaneously installed on the pressure regulator base, and the installation requirements can be met without additional pipelines, so that the connection position is less, the integration degree is high, the risk of gas leakage is reduced, and the size of the pressure regulator is also reduced. The various interfaces are dispersedly arranged, so that interference of the installed equipment is avoided, and maintenance is facilitated. The gas needs to break through the main adjusting valve core to pass through the valve port, the pressure of the main adjusting valve core to the valve port is adjustable, the gas pressure is different when the main adjusting valve core of different pressures is broken through, so the final discharged gas pressure is changed by adjusting the pressure of the main adjusting valve core. When the pressure in the pressure regulator exceeds the threshold value, the cutting valve core can block the valve port to cut off the gas flow. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 It is a structural schematic view of a pressure regulator base in the embodiments of the utility model.

[0025] Figure 2 It is a whole structural schematic view of a pressure regulator in the embodiments of the utility model.

[0026] Figure 3 It is a structural schematic view of a low-pressure pressure regulator in the embodiments of the utility model.

[0027] Figure 4 It is a structural schematic view of a medium-pressure pressure regulator in the embodiments of the utility model.

[0028] Figure 5The utility model discloses a structure diagram of a high pressure pressure regulator in an embodiment of the utility model.

[0029] 1, main body, 2, flow passage, 3, inlet valve, 4, outlet valve, 5, filter core installation mouth, 6, main adjustment assembly installation mouth, 7, cut-off assembly installation mouth, 8, inlet pressure gauge, 9, outlet pressure gauge, 10, pressure measuring nozzle, 11, tee, 12, needle valve, 13, filter core, 14, main adjustment assembly, 15, cut-off assembly, 16, filter core cover plate, 17, first internal pressure signal feedback pipe, 18, second internal pressure signal feedback pipe, 19, main valve core, 20, cut-off valve core, 21, valve port. DETAILED DESCRIPTION

[0030] The skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in the specification. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range protected by the utility model.

[0031] It is known that the structure, ratio, size and the like shown in the drawings of the specification are only used to cooperate with the content disclosed in the specification for the skilled in the art to understand and read, and not to limit the limiting conditions that the utility model can be implemented, so it does not have technical substantial significance. Any modification of structure, change of ratio relationship or adjustment of size, without affecting the effects and purposes that the utility model can produce, should still fall within the range covered by the technical content disclosed by the utility model. In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, structure and operation, therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Therefore, the features limited by "first", "second" and the like can be explicitly or implicitly included one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0032] It should be noted that the same reference signs in the embodiments of the present application represent the same component or the same part.

[0033] The utility model discloses a pressure regulator base to solve the problems existing in the prior art, the gas inlet valve, the gas outlet valve, the filter element, the main adjustment assembly and the cut-off assembly can be simultaneously installed on the pressure regulator base, the installation requirement can be met without additional pipeline, the connection position is less, the integration degree is high, the gas leakage risk is reduced, and the size of the pressure regulator is also reduced. The various interfaces are dispersedly arranged, interference of the installed equipment is avoided, and maintenance and repair are facilitated.

[0034] The utility model discloses still provide a kind of pressure regulator, including above-mentioned pressure regulator base, in addition to above-mentioned technical effect, main adjustment assembly can adjust the gas pressure that gas passes through port discharges, when gas pressure exceeds threshold value, cut-off assembly can seal gas through port, interrupt exhaust. Before passing through gas through port, all gas can be filtered, guarantee clean.

[0035] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the utility model will be further explained in detail below with the help of drawings and specific embodiments.

[0036] Embodiment one

[0037] As Figures 1-5 The utility model discloses a pressure regulator base, including main part 1, flow channel 2 is arranged in main part 1, main part 1 is provided with the gas inlet valve 3 of the gas inlet end of intercommunication flow channel 2 and the gas outlet valve 4 of the gas outlet end of intercommunication flow channel 2, main part 1 is also provided with filter element installation port 5, main adjustment assembly installation port 6 and cut-off assembly installation port 7 of intercommunication flow channel 2, filter element installation port 5 is close to the gas inlet end of flow channel 2, main adjustment assembly installation port 6 is close to the gas outlet end of flow channel 2, main adjustment assembly installation port 6 is oppositely arranged with cut-off assembly installation port 7, and valve port 21 fixed in flow channel 2 is arranged between main adjustment assembly installation port 6 and cut-off assembly installation port 7. Gas inlet valve 3, gas outlet valve 4, filter element 13, main adjustment assembly 14 and cut-off assembly 15 can meet the installation requirement without additional pipeline, the connection position is less, the integration degree is high, the gas leakage risk is reduced, and the size of the pressure regulator is also reduced. The various interfaces are dispersedly arranged, interference of the installed equipment is avoided, and maintenance and repair are facilitated.

[0038] In one embodiment, the gas outlet end of the gas inlet valve 3 is fixedly connected with the gas inlet end of the flow channel 2 by a fastener, and the gas inlet end of the gas outlet valve 4 is fixedly connected with the gas outlet end of the flow channel 2 by a fastener. Preferably, the fastener is a flange and a bolt.

[0039] In one embodiment, the gas inlet valve 3 and the main body 1 are an integral structure, and the gas outlet valve 4 and the main body 1 are an integral structure.

[0040] In one embodiment, the gas inlet pressure gauge 8 is arranged on the main body 1, the detection end of the gas inlet pressure gauge 8 is communicated with the flow channel 2, and the gas inlet pressure gauge 8 is close to the gas inlet valve 3.

[0041] In one embodiment, an exhaust pressure gauge 9 is mounted on the main body 1, with its probe end connected to the flow channel 2 and the exhaust pressure gauge 9 located near the exhaust valve 4.

[0042] In one embodiment, a pressure testing nozzle 10 is mounted on the main body 1. The inlet of the pressure testing nozzle 10 is connected to the flow channel 2, and the outlet of the pressure testing nozzle 10 is provided with an openable pressure testing interface. The pressure testing nozzle 10 is located near the outlet valve 4. An external pressure gauge can be connected to the pressure testing nozzle 10 to check the performance of the pressure regulator during installation and commissioning. During operation, the measured value of the external pressure gauge can be compared with the measured value of the outlet pressure gauge 9 to determine whether the outlet pressure gauge 9 is functioning correctly.

[0043] In one embodiment, a tee 11 is mounted on the main body 1. The measuring end of the outlet pressure gauge 9 is connected to the first end of the tee 11, the inlet end of the pressure probe 10 is connected to the second end of the tee 11, and the third end of the tee 11 is connected to the flow channel 2. A needle valve 12 is also connected between the measuring end of the outlet pressure gauge 9 and the first end of the tee 11. The pressure probe 10 and the outlet pressure gauge 9 are integrated on the same tee 11, resulting in a compact structure. A needle valve 12 is provided between the outlet pressure gauge 9 and the tee 11. When the outlet pressure gauge 9 malfunctions, the needle valve 12 can disconnect the connection between the outlet pressure gauge 9 and the tee 11, allowing the outlet pressure gauge 9 to be replaced without stopping the pressure regulator. During the replacement of the outlet pressure gauge 9, the outlet pressure can be continuously monitored by connecting an external pressure gauge to the pressure probe 10.

[0044] Example 2

[0045] like Figures 1-5 As shown, this utility model also provides a pressure regulator, including a filter element 13, a main regulating assembly 14, a cut-off assembly 15, and the aforementioned pressure regulator base. The filter element 13 is inserted into the filter element mounting port 5 and is fixedly connected to the main body 1. A filter element cover plate 16 is provided on the filter element mounting port 5, and the filter element 13 blocks the flow channel 2. The air inlet of the filter element 13 is connected to the flow channel 2 near the air inlet valve 3, and the air outlet of the filter element 13 is connected to the flow channel 2 near the main regulating assembly 14. The main regulating valve core 19 of the main regulating assembly 14 extends into the flow channel 2 from the main regulating assembly mounting port 6 and is located on the air outlet side of the valve port 21. The main regulating assembly 14 is fixedly connected to the main body 1. The cut-off valve core 20 of the cut-off assembly 15 extends into the flow channel 2 from the cut-off assembly mounting port 7 and is located on the air inlet side of the valve port 21. The cut-off assembly 15 is fixedly connected to the main body 1.

[0046] The filter core 13 can filter the tiny liquid drops and solid particles in the gas. The inlet side of the valve port 21 is provided with a cut-off valve core 20. In normal operation, the cut-off valve core 20 does not block the valve port 21. When the pressure in the pressure regulator exceeds the threshold value, the spring in the cut-off valve core 20 works to make the end of the cut-off valve core 20 block the valve port 21, cutting off the gas flow. The outlet side of the valve port 21 is provided with a main regulating valve core 19. When there is no gas flow, the end of the main regulating valve core 19 blocks the valve port 21. The main regulating valve core 19 is provided with a spring with adjustable elasticity. One end of the spring with adjustable elasticity is connected to the end of the main regulating valve core 19 to provide pressure to the end of the main regulating valve core 19. The valve gas flow needs to push open the main regulating valve core 19 to pass through the valve port 21. Therefore, adjusting the pressure applied by the main regulating valve core 19 can adjust the pressure of the gas flow passing through the valve port 21, thereby achieving the adjustment of the pressure of the gas discharged by the outlet valve 4. In operation, the gas entering from the inlet valve 3 first enters the filter core 13. After filtration, the gas flow contacts the end of the main regulating valve core 19 and opens the main regulating valve core 19 to pass through the valve port 21, and then reaches the outlet valve 4 to leave the pressure regulator.

[0047] In one embodiment, the main regulating assembly 14 is one of a low-pressure main regulating assembly, a medium-pressure main regulating assembly, or a high-pressure main regulating assembly, and the cut-off assembly 15 is one of a low-pressure cut-off assembly, a medium-pressure cut-off assembly, or a high-pressure cut-off assembly. The low-pressure main regulating assembly matches the low-pressure cut-off assembly, the medium-pressure main regulating assembly matches the medium-pressure cut-off assembly, and the high-pressure main regulating assembly matches the high-pressure cut-off assembly. According to GB 50028 “Urban Gas Design Specification”, the pressure value of low-pressure gas is less than or equal to 0.01 MPa, the pressure value of medium-pressure gas is 0.01 MPa to 0.4 MPa, and the pressure value of high-pressure gas is greater than 0.4 MPa. The main regulating assembly 14 and the cut-off assembly 15 can use existing finished devices in the prior art.

[0048] In one embodiment, for a low-pressure pressure regulator, the main regulating valve core 19 is provided with a first internal pressure taking signal feedback pipe 17, the first end of the first internal pressure taking signal feedback pipe 17 is connected to the inside of the main regulating valve core 19, and the second end of the first internal pressure taking signal feedback pipe 17 extends to the outlet end of the flow channel 2. The cut-off valve core 20 is provided with a second internal pressure taking signal feedback pipe 18, the first end of the second internal pressure taking signal feedback pipe 18 is connected to the inside of the cut-off valve core 20, and the second end of the second internal pressure taking signal feedback pipe 18 extends to the outlet end of the flow channel 2. The first internal pressure taking signal feedback pipe 17 and the second internal pressure taking signal feedback pipe 18 can directly introduce the gas in the flow channel 2 into the main regulating valve core 19 and the cut-off valve core 20, forming internal pressure taking signal feedback. For medium-pressure pressure regulators and high-pressure pressure regulators, external pressure taking signal feedback is used, and the first internal pressure taking signal feedback pipe 17 and the second internal pressure taking signal feedback pipe 18 are not required.

[0049] The principle and implementation mode of the utility model are described by applying specific examples, and the above embodiment is only used for helping to understand the method and core idea of the utility model; meanwhile, for the general technical personnel in the field, the specific implementation mode and application range will be changed according to the idea of the utility model. In conclusion, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A voltage regulator base, characterized in that: The system includes a main body (1), a flow channel (2) is provided inside the main body (1), an air inlet valve (3) connected to the air inlet end of the flow channel (2) and an air outlet valve (4) connected to the air outlet end of the flow channel (2) are provided on the main body (1), and a filter element installation port (5), a main adjustment component installation port (6) and a cut-off component installation port (7) connected to the flow channel (2) are also provided on the main body (1). The filter element installation port (5) is close to the air inlet end of the flow channel (2), the main adjustment component installation port (6) is close to the air outlet end of the flow channel (2), the main adjustment component installation port (6) and the cut-off component installation port (7) are arranged opposite to each other, and a valve port (21) fixed in the flow channel (2) is provided between the main adjustment component installation port (6) and the cut-off component installation port (7). An outlet pressure gauge (9) is installed on the main body (1). The probe end of the outlet pressure gauge (9) is connected to the flow channel (2). The outlet pressure gauge (9) is close to the outlet valve (4). A pressure measuring nozzle (10) is installed on the main body (1). The inlet end of the pressure measuring nozzle (10) is connected to the flow channel (2). The outlet end of the pressure measuring nozzle (10) is provided with an openable pressure measuring interface. The pressure measuring nozzle (10) is close to the outlet valve (4).

2. The voltage regulator base according to claim 1, characterized in that: The air outlet end of the air inlet valve (3) is fixedly connected to the air inlet end of the flow channel (2) by fasteners, and the air inlet end of the air outlet valve (4) is fixedly connected to the air outlet end of the flow channel (2) by fasteners.

3. The voltage regulator base according to claim 1, characterized in that: The intake valve (3) and the main body (1) are an integral structure, and the exhaust valve (4) and the main body (1) are an integral structure.

4. The voltage regulator base according to claim 1, characterized in that: An intake pressure gauge (8) is installed on the main body (1), and the probe end of the intake pressure gauge (8) is connected to the flow channel (2). The intake pressure gauge (8) is close to the intake valve (3).

5. The voltage regulator base according to claim 1, characterized in that: A three-way valve (11) is installed on the main body (1). The measuring end of the outlet pressure gauge (9) is connected to the first end of the three-way valve (11). The inlet end of the pressure probe (10) is connected to the second end of the three-way valve (11). The third end of the three-way valve (11) is connected to the flow channel (2). A needle valve (12) is also connected between the measuring end of the outlet pressure gauge (9) and the first end of the three-way valve (11).

6. A voltage regulator, characterized in that: The device includes a filter element (13), a main regulating assembly (14), a cut-off assembly (15), and a regulator base as described in any one of claims 1 to 5. The filter element (13) is inserted into the filter element mounting port (5). The filter element (13) is fixedly connected to the main body (1). A filter element cover plate (16) is provided on the filter element mounting port (5). The filter element (13) blocks the flow channel (2). The air inlet of the filter element (13) is connected to the flow channel (2) near the air inlet valve (3). The air outlet of the filter element (13) is connected to the flow channel (2) near the main regulating assembly (14). The main control valve core (19) of the main control assembly (14) extends into the flow channel (2) from the main control assembly mounting port (6) and is located on the outlet side of the valve port (21). The main control assembly (14) is fixedly connected to the main body (1). The shut-off valve core (20) of the shut-off assembly (15) extends into the flow channel (2) from the shut-off assembly mounting port (7) and is located on the inlet side of the valve port (21). The shut-off assembly (15) is fixedly connected to the main body (1).

7. The voltage regulator according to claim 6, characterized in that: The master control component (14) is one of a low-voltage master control component, a medium-voltage master control component, or a high-voltage master control component, and the cut-off component (15) is one of a low-voltage cut-off component, a medium-voltage cut-off component, or a high-voltage cut-off component. The low-voltage master control component is matched with the low-voltage cut-off component, the medium-voltage master control component is matched with the medium-voltage cut-off component, and the high-voltage master control component is matched with the high-voltage cut-off component.

8. The voltage regulator according to claim 7, characterized in that: The main control valve core (19) is provided with a first internal pressure signal feedback tube (17). The first end of the first internal pressure signal feedback tube (17) is connected to the interior of the main control valve core (19), and the second end of the first internal pressure signal feedback tube (17) extends to the outlet end of the flow channel (2). The cut-off valve core (20) is provided with a second internal pressure signal feedback tube (18). The first end of the second internal pressure signal feedback tube (18) is connected to the interior of the cut-off valve core (20), and the second end of the second internal pressure signal feedback tube (18) extends to the outlet end of the flow channel (2).

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