CN218458488U - Voltage stabilization structure of voltage stabilization type pressure reducer - Google Patents

Voltage stabilization structure of voltage stabilization type pressure reducer Download PDF

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Publication number
CN218458488U
CN218458488U CN202222338661.8U CN202222338661U CN218458488U CN 218458488 U CN218458488 U CN 218458488U CN 202222338661 U CN202222338661 U CN 202222338661U CN 218458488 U CN218458488 U CN 218458488U
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pressure
pressure stabilizing
hole
pressure reducer
valve body
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CN202222338661.8U
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杨国建
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Zhejiang Yu'an Fire Fighting Equipment Co ltd
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Zhejiang Yu'an Fire Fighting Equipment Co ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

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Abstract

The utility model is suitable for the technical field of pressure reducers, and provides a pressure stabilizing structure of a pressure stabilizing type pressure reducer, which comprises a pressure reducer valve body and a pressure stabilizing assembly; a mounting hole for installing the voltage stabilizing assembly is formed in the surface of the pressure reducer valve body, and a flow guide hole extending to the inside of the pressure reducer valve body is formed in the inner end of the mounting hole. This steady voltage structure of steady voltage formula pressure reducer, it is downthehole to get into the less steady voltage of diameter from the great runner of diameter through high-pressure gas flow, airflow pressure tends towards stably gradually, realize the steady voltage, it causes the output gas flow too big to cause extravagantly in advancing the steady voltage subassembly to avoid high-pressure gas high-speed input, after through the steady voltage, gaseous torrent is effectively controlled, make the pressure of the high-pressure gas flow of output to the pressure reducer valve body more stable, the pressure reduction performance of pressure reducer valve body improves this moment, output gas pressure is steady, respirator can not receive unstable air current influence, gaseous waste has also been reduced, consequently, the live time of respirator is prolonged greatly, satisfy long-time rescue operation demand.

Description

Voltage stabilization structure of voltage stabilization type pressure reducer
Technical Field
The utility model belongs to the technical field of the pressure reducer, especially, relate to a voltage stabilization structure of steady voltage formula pressure reducer.
Background
The pressure reducer is one of the cores of positive pressure air respirators, the positive pressure air respirator is important equipment for fire rescue and working in toxic and harmful places, each time of fire rescue and rescue operation in toxic and harmful environments can not be separated from the use of the positive pressure air respirator, the use and air supply performance of the positive pressure air respirator can be directly influenced by the performance of the pressure reducer, but the pressure reducer used by the conventional positive pressure air respirator is unstable in output airflow, easily causes gas waste, and is short in air supply time, and the air respirator can be used for people to breathe for 50 minutes theoretically according to the example of the conventional positive pressure air respirator with the capacity of 6.8 liters and 30Mpa, but the effective use time of actual fire fighters in rescue is only about 17 minutes short, if the air is used for rescuing the people in danger, the use time of the air respirator is shorter, the air respirator is very unfavorable for continuous operation of users, the requirement of long-time rescue operation is difficult to meet, the problem of how to solve the use and the air supply time of the conventional positive pressure air respirator is needed to improve the rescue efficiency of fire fighters, so as to reduce the injury of the air respirator caused by the short use time, and the air respirator, and the problem of people before emergency death is solved.
SUMMERY OF THE UTILITY MODEL
The utility model provides a steady voltage structure of steady voltage formula pressure reducer aims at solving the pressure reducer that current positive pressure air respirator used, and the output air current is unstable, causes gaseous extravagant easily, and the air feed time is short, hardly satisfies the problem of long-time rescue operation demand.
The utility model is realized in such a way, the pressure stabilizing structure of the pressure stabilizing type pressure reducer comprises a pressure reducer valve body and a pressure stabilizing assembly;
the surface of the pressure reducer valve body is provided with a mounting hole for mounting the pressure stabilizing assembly, and the inner end of the mounting hole is provided with a flow guide hole extending to the inside of the pressure reducer valve body;
the pressure stabilizing assembly comprises a columnar connecting body, an inwards-recessed air inlet is formed in the front end of the connecting body, a flow channel penetrating through the air inlet is formed in the middle section of the interior of the connecting body along the length direction of the connecting body, an inwards-recessed mounting groove penetrating through the flow channel is formed in the rear end of the connecting body, a pressure stabilizing cylinder is arranged at the front end of the inner cavity of the mounting groove, a first nut which is used for tightly supporting the pressure stabilizing cylinder to the inner cavity of the mounting groove is arranged at the rear end of the inner cavity of the pressure stabilizing cylinder, the rear end of the pressure stabilizing cylinder is open, a pressure stabilizing hole is formed in the front end face of the pressure stabilizing cylinder, the first nut is of a penetrating cylindrical structure, when the pressure stabilizing cylinder and the first nut are fixedly mounted in the mounting groove, the flow channel, the pressure stabilizing hole, the inner cavity of the pressure stabilizing cylinder and the inner cavity of the first nut are sequentially communicated to form a complete air flow channel, and the diameter of the pressure stabilizing hole is smaller than that of the flow channel.
Preferably, an air inlet sealing ring is arranged on the front end face of the connecting body, and the inner diameter of the air inlet sealing ring is larger than the diameter of the front end of the air inlet hole.
Preferably, the inner cavity of the air inlet is nested with a cylindrical filter cartridge, the air inlet end of the filter cartridge is open, and the front end of the inner cavity of the air inlet is provided with a second nut which tightly pushes the filter cartridge to the inner cavity of the air inlet.
Preferably, a handle is fixedly arranged on the surface of the connecting body.
Preferably, an annular groove is formed in the surface of the rear end of the connecting body, which is located in the inner cavity of the mounting hole, a high-pressure air hole extending inwards to penetrate the flow channel is formed in the annular groove, and an air delivery channel communicated with the mounting hole and corresponding to the annular groove is formed in the inner cavity of the pressure reducer valve body.
Preferably, the sealing device further comprises a sealing gasket, the sealing gasket is of an annular structure, the sealing gasket is tightly pressed between the rear end of the connecting body and the rear end of the inner wall surface of the mounting hole, a central hole of the sealing gasket is located in the first nut cavity part and the outer ring of the flow guide hole, and a groove matched with the sealing gasket is formed in the rear end of the inner wall surface of the mounting hole.
Advantageous effects
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a steady voltage structure of steady voltage formula pressure reducer, high-pressure gas gets into in the less steady voltage hole of diameter from the great runner of diameter, airflow pressure tends towards stably gradually, realize the steady voltage, it causes the output gas flow too big waste that causes in the pressure stabilizing component to avoid high-pressure gas high-speed input to advance, gas after the steady voltage flows into the pressure reducer valve body through steady voltage hole and reduces pressure, avoid high-pressure gas's the unstable high pressure torrent that produces of atmospheric pressure to cause the impact to the pressure reducer valve body, after through the steady voltage, gaseous torrent is effectively controlled, make the pressure of the high-pressure gas flow of output to the pressure reducer valve body more stable, the pressure reducing performance of pressure reducer valve body improves this moment, output gas pressure is steady, consequently, the user's discharge valve of face guard when breathing just can not receive unstable air current influence, gaseous waste has also been reduced, consequently, the live time of long-time rescue operation demand is satisfied, practicality and safety are all promoted greatly.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic structural view of the present invention during assembly;
fig. 3 is the external structure diagram of the voltage stabilizing assembly of the present invention.
In the figure: 1-a pressure reducer valve body, 2-a connector, 3-a mounting hole, 4-a flow guide hole, 5-an air inlet, 6-a flow channel, 7-a pressure stabilizing gasket, 8-a pressure stabilizing cylinder, 9-a first nut, 10-a filter cartridge, 11-a second nut, 12-an air inlet sealing ring, 13-a handle, 14-a sealing ring, 15-a high-pressure air hole, 16-an annular groove and 17-a sealing gasket.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-3, the present invention provides a technical solution: a pressure stabilizing structure of a pressure stabilizing type pressure reducer comprises a pressure reducer valve body 1 and a pressure stabilizing assembly;
a mounting hole 3 that is used for installing steady voltage subassembly is seted up on the surface of pressure reducer valve body 1, and a water conservancy diversion hole 4 that extends to pressure reducer valve body 1 inside is seted up to the inner of mounting hole 3.
The pressure reducer valve body 1 is a prior art, has a gas pressure reducing function, and is not described herein.
During the use, the steady voltage subassembly passes through mounting hole 3 to install to pressure regulator valve body 1 on, and high-pressure gas in the gas cylinder passes through steady voltage subassembly steady voltage after, reduces pressure in getting into the decompression structure of 1 inside of pressure regulator valve body through water conservancy diversion hole 4, then gives vent to anger the end by the middling pressure of pressure regulator valve body 1 and export to the respirator and supply to breathe the use.
The voltage stabilizing assembly comprises a columnar connecting body 2, an inwards-recessed air inlet hole 5 is formed in the front end of the connecting body 2, a flow channel 6 communicated with the air inlet hole 5 is formed in the middle section of the interior of the connecting body 2 along the length direction of the middle section, and an inwards-recessed mounting groove communicated with the flow channel 6 is formed in the rear end of the connecting body 2.
The air inlet 5, the flow passage 6 and the central axis of the mounting groove are distributed along the same straight line.
The front end of the inner cavity of the mounting groove is provided with a pressure stabilizing cylinder 8, the rear end of the inner cavity of the pressure stabilizing cylinder is provided with a first nut 9 which tightly supports the pressure stabilizing cylinder 8 to the inner cavity of the mounting groove, the rear end of the pressure stabilizing cylinder 8 is open, the front end surface of the pressure stabilizing cylinder is provided with a pressure stabilizing hole, the first nut 9 is of a through cylindrical structure, when the pressure stabilizing cylinder 8 and the first nut 9 are fixedly mounted in the mounting groove, the flow channel 6, the pressure stabilizing hole, the inner cavity of the pressure stabilizing cylinder 8 and the inner cavity of the first nut 9 are sequentially communicated to form a complete airflow channel, and the diameter of the pressure stabilizing hole is smaller than that of the flow channel 6.
In the embodiment, a pressure stabilizing gasket 7 is arranged between the front end of the pressure stabilizing cylinder 8 and the front end of the inner cavity of the mounting groove, the pressure stabilizing gasket 7 is in a ring shape, and the inner diameter of the pressure stabilizing gasket 7 is larger than the diameter of the flow channel 6 and the diameter of the pressure stabilizing hole, so that the air flow entering the pressure stabilizing hole from the flow channel 6 is not influenced.
First nut 9 is hollow cylindric, both ends are link up, the surface is provided with the external screw thread, the rear end of mounting groove inner chamber is provided with the internal thread, during the installation, place mounting groove inner chamber front end with surge damping gasket 7 earlier, then with surge damping section of thick bamboo 8 push into the mounting groove in, surge damping section of thick bamboo 8 uncovered one end is backward, then with first nut 9 screw in to the mounting groove in, until first nut 9 top tight surge damping section of thick bamboo 8, surge damping section of thick bamboo 8 top tight surge damping gasket 7 for can not have the gap between surge damping section of thick bamboo 8 front end and the mounting groove inner wall front end and lead to leaking gas, all air currents must just can continue backward through the surge damping hole.
During the use, high-pressure gas gets into inlet port 5, the runner 6 back in proper order, gets into the inner chamber of stabilivolt section of thick bamboo 8 and the inner chamber of first nut 9 through the steady voltage hole, because the diameter in steady voltage hole is minimum, the air current gets into in the less steady voltage hole of diameter by the runner 6 that the diameter is great, pressure tends to flow backward after stable, realizes steady voltage, and because steady voltage hole department narrows down, the air flow reduces gradually, can play the function of control inlet flow, avoid high-pressure gas to input into pressure reducer valve body 1 at a high speed and cause the output gas flow too big waste.
The gas after the steady voltage continues to flow backward through the inner chamber of first nut 9 and gets into water conservancy diversion hole 4, flow into the decompression subassembly in the pressure reducer valve body 1 and reduce the pressure, avoid the unstable high-pressure torrent that produces of high-pressure gas's atmospheric pressure to cause the impact to pressure reducer valve body 1, after the steady voltage, gaseous torrent is effectively controlled, so output high pressure is just very stable, the decompression performance of pressure reducer valve body 1 improves this moment, output gas pressure is steady, consequently, the user's discharge valve of face guard just can not receive unstable air current when breathing and influence and cause the waste of precious gas.
The pressure stabilizing effect and the air flow of the pressure stabilizing assembly are determined by the aperture size of the pressure stabilizing hole, the pressure stabilizing holes of different pressure stabilizing cylinders 8 can be processed into different aperture sizes according to different requirements, and the pressure stabilizing cylinders 8 can be replaced for use, so that different pressure stabilizing requirements are met.
Further, an air inlet sealing ring 12 is arranged on the front end face of the connecting body 2, and the inner diameter of the air inlet sealing ring 12 is larger than the diameter of the front end of the air inlet 5.
In this embodiment, the front end of the connecting body 2 is communicated with an air inlet pipeline or an air inlet valve, and the air inlet sealing ring 12 can ensure the sealing effect between the front end of the connecting body 2 and the components such as the air inlet valve, so as to prevent air leakage.
Furthermore, a cylindrical filter cartridge 10 is nested in the inner cavity of the air inlet 5, the air inlet end of the filter cartridge 10 is open, and a second nut 11 for tightly pushing the filter cartridge 10 to the inner cavity of the air inlet 5 is arranged at the front end of the inner cavity of the air inlet 5.
In this embodiment, filter cartridge 10 can be metal or plastics material, and the thickness grow of the uncovered department anchor ring of front end, during the assembly, earlier filter cartridge 10 fills in the rear end of 5 inner chambers of inlet port, filter cartridge 10's uncovered one end is towards the front end of connector 2, then with in the mounting groove of second nut 11 screw in inlet port 5 front ends, support filter cartridge 10 tightly, filter cartridge 10 can filter the granule impurity that exists in the gas on the one hand, on the other hand can play the effect of vortex, tentatively disturb high pressure draught, the steady voltage, flow backward again.
Second nut 11 is hollow tubular structure, and the outer wall is provided with the external screw thread, and the front end of inlet port 5 expands outward, forms the collar, and the collar inner wall is provided with the internal thread of looks adaptation, and second nut 11 screws to the collar, does not influence the normal circulation of air current simultaneously with cartridge filter 10 top tight. The inner diameter of the mounting ring is larger than the inner diameter of the rear half section of the inner cavity of the air inlet 5, so that the filter cartridge 10 can not be obstructed when entering.
Further, the sealing device further comprises a sealing gasket 17, the sealing gasket 17 is of an annular structure, the sealing gasket 17 is tightly pressed between the rear end of the connecting body 2 and the rear end of the inner wall surface of the mounting hole 3, a central hole of the sealing gasket 17 is located on the outer ring of the first nut 9 and the outer ring of the flow guide hole 4, and a groove matched with the sealing gasket 17 is formed in the rear end of the inner wall surface of the mounting hole 3.
Seal gasket 17 is installed in the recess of 3 internal face rear ends of mounting hole, connector 2 installs the back in place, support tight seal gasket 17, the two in close contact with, and support seal gasket 17 tightly to the mounting hole 3 internal face on, the steady voltage hole, the pressure stabilizing cylinder 8 inner chamber, the central annular cavity and the water conservancy diversion hole 4 of first nut 9 inner chamber and seal gasket 17 form a complete and sealed air current passage, make the air current in the mounting groove can flow into in the water conservancy diversion hole 4 completely and can not leak, carry the inside decompression of gas after the steady voltage to pressure reducer valve body 1, flow out to air feed valve and respirator and supply to breathe the use by the middling pressure gas outlet of pressure reducer valve body 1 after the decompression.
Further, a handle 13 is fixedly mounted on the surface of the connecting body 2.
In this embodiment, the handle 13 facilitates rotation of the connecting body 2 to screw the rear end of the connecting body 2 into the mounting hole 3.
Furthermore, an annular groove 16 is formed in the surface of the rear end of the connecting body 2, which is located in the inner cavity of the mounting hole 3, a high-pressure air hole 15 extending inwards to penetrate the flow passage 6 is formed in the annular groove 16, and an air delivery channel which is communicated with the mounting hole 3 and corresponds to the annular groove 16 is formed in the inner cavity of the pressure reducer valve body 1.
When the rear end of the connecting body 2 is mounted inside the mounting hole 3, an annular cavity is formed between the annular groove 16 and the inner wall surface of the mounting hole 3.
Because the aperture of the pressure stabilizing hole is smaller than that of the flow passage 6, the gas flow is reduced, part of the high-pressure gas in the flow passage 6 can not flow backwards through the pressure stabilizing hole in time and is gathered in the flow passage 6, the high-pressure gas gathered in the flow passage 6 is not subjected to pressure stabilization and pressure reduction, and part of the high-pressure gas enters the cavity formed between the annular groove 16 and the inner wall surface of the mounting hole 3 through the high-pressure gas hole 15 and then enters the gas transmission channel of the inner cavity of the pressure reducer valve body 1 and is transmitted to the high-pressure gas outlet flowing into the pressure reducer valve body 1 for use of an alarm and a safety valve.
In this embodiment, the rear end external diameter on connector 2 surface reduces, forms the installation position with mounting hole 3 looks adaptation, and the intersection on the first half section on installation position and connector 2 surface forms sealed step, and when the installation position of connector 2 rear end was installed to mounting hole 3 in, sealed step department sets up a sealing ring 14 for it is sealed to form between 1 surface of pressure reducer valve body and the connector 2, avoids the inside gas leakage of mounting hole 3.
The installation position can be installed to mounting hole 3 in through threaded connection, and the installation position surface is provided with the external screw thread, and 3 internal faces in mounting hole are provided with the internal thread, through grip handle 13 inwards screw connector 2 and realize the installation.
Due to the sealing effect of the sealing gasket 17 at the rear end of the connecting body 2 and the presence of the sealing ring 14 at the front end of the mounting hole 3, the gas entering the interior of the annular cavity cannot leak.
The utility model discloses a theory of operation and use flow: the utility model discloses install the back well, high-pressure gas gets into in the inlet port 5 through subassembly such as valve, and get into inlet port 5 in proper order, it is downthehole to runner 6 and steady voltage, because the diameter in steady voltage hole is minimum, some air current gets into in the less steady voltage of diameter by the great runner 6 of diameter, pressure tends to flow to the back after stabilizing, realize the steady voltage, gas after the steady voltage reduces pressure in flowing into pressure reducer valve body 1 through water conservancy diversion hole 4, flow to air feed valve and respirator supply to breathe and use by the middling pressure gas outlet of pressure reducer valve body 1 after the decompression, avoid high-pressure gas's atmospheric pressure unstability to produce the high pressure torrent and lead to the fact the impact to pressure reducer valve body 1, after through the steady voltage, gaseous torrent is effectively controlled, so output high pressure is just very stable, high-pressure gas that gathers in the runner 6 is not steady voltage and decompression, some gets into inside the cavity that forms between the internal face of annular groove 16 and mounting hole 3 through high-pressure gas pocket 15, then get into in the gas transmission channel of valve body 1 inner chamber, carry to the high pressure mouth that flows into pressure reducer valve body 1 and supplies the alarm and uses.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims (6)

1. The utility model provides a steady voltage structure of steady voltage formula pressure reducer which characterized in that: comprises a pressure reducer valve body (1) and a pressure stabilizing component;
the surface of the pressure reducer valve body (1) is provided with a mounting hole (3) for mounting the pressure stabilizing assembly, and the inner end of the mounting hole (3) is provided with a flow guide hole (4) extending to the inside of the pressure reducer valve body (1);
the pressure stabilizing assembly comprises a columnar connecting body (2), wherein an inwards-recessed air inlet (5) is formed in the front end of the connecting body (2), a flow channel (6) communicated with the air inlet (5) is formed in the middle section of the inside of the connecting body (2) along the length direction of the connecting body, and an inwards-recessed mounting groove communicated with the flow channel (6) is formed in the rear end of the connecting body (2);
the front end of the inner cavity of the mounting groove is provided with a pressure stabilizing cylinder (8), the rear end of the inner cavity of the pressure stabilizing cylinder is provided with a first nut (9) which tightly supports the pressure stabilizing cylinder (8) to the inner cavity of the mounting groove, the rear end of the pressure stabilizing cylinder (8) is open, a pressure stabilizing hole is formed in the front end face of the pressure stabilizing cylinder, the first nut (9) is of a through cylindrical structure, the pressure stabilizing cylinder (8) and the first nut (9) are fixedly mounted in the mounting groove, the flow channel (6), the pressure stabilizing hole, the inner cavity of the pressure stabilizing cylinder (8) and the inner cavity of the first nut (9) are sequentially communicated to form a complete airflow channel, and the diameter of the pressure stabilizing hole is smaller than that of the flow channel (6).
2. A pressure stabilizing structure of a pressure stabilizing type pressure reducer as claimed in claim 1, wherein: an air inlet sealing ring (12) is arranged on the front end face of the connecting body (2), and the inner diameter of the air inlet sealing ring (12) is larger than the diameter of the front end of the air inlet hole (5).
3. A pressure stabilizing structure of a pressure stabilizing type pressure reducer as claimed in claim 1, wherein: the inner cavity of the air inlet hole (5) is nested with a cylindrical filter cartridge (10), the air inlet end of the filter cartridge (10) is open, and the front end of the inner cavity of the air inlet hole (5) is provided with a second nut (11) which tightly pushes the filter cartridge (10) to the inner cavity of the air inlet hole (5).
4. A pressure stabilizing structure of a pressure stabilizing type pressure reducer as claimed in claim 1, wherein: a handle (13) is fixedly arranged on the surface of the connecting body (2).
5. A pressure stabilizing structure of a pressure stabilizing type pressure reducer as claimed in claim 1, wherein: the rear end of the connecting body (2) is located on the surface of the inner cavity of the mounting hole (3) and is provided with an annular groove (16), the annular groove (16) is provided with a high-pressure air hole (15) which extends inwards and penetrates to the flow channel (6), and the inner cavity of the pressure reducer valve body (1) is provided with an air transmission channel which is communicated with the mounting hole (3) and corresponds to the annular groove (16).
6. A pressure stabilizing structure of a pressure stabilizing type pressure reducer as claimed in claim 1, wherein: the sealing device is characterized by further comprising a sealing gasket (17), wherein the sealing gasket (17) is of an annular structure, the sealing gasket (17) is tightly pressed between the rear end of the connector (2) and the rear end of the inner wall surface of the mounting hole (3), a center hole of the sealing gasket (17) is located in the cavity part of the first nut (9) and the outer ring of the flow guide hole (4), and a groove matched with the sealing gasket (17) is formed in the rear end of the inner wall surface of the mounting hole (3).
CN202222338661.8U 2022-09-02 2022-09-02 Voltage stabilization structure of voltage stabilization type pressure reducer Active CN218458488U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222338661.8U CN218458488U (en) 2022-09-02 2022-09-02 Voltage stabilization structure of voltage stabilization type pressure reducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222338661.8U CN218458488U (en) 2022-09-02 2022-09-02 Voltage stabilization structure of voltage stabilization type pressure reducer

Publications (1)

Publication Number Publication Date
CN218458488U true CN218458488U (en) 2023-02-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202222338661.8U Active CN218458488U (en) 2022-09-02 2022-09-02 Voltage stabilization structure of voltage stabilization type pressure reducer

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