WO2023080437A1

WO2023080437A1 - Pressure regulator

Info

Publication number: WO2023080437A1
Application number: PCT/KR2022/014062
Authority: WO
Inventors: 김영수; 김병철
Original assignee: 주식회사 케이디펜스
Priority date: 2021-11-02
Filing date: 2022-09-21
Publication date: 2023-05-11
Also published as: KR102388553B1

Abstract

A pressure regulator for supplying a compressed fluid after decompression according to the present invention, comprises: a housing having an entrance, a first installation chamber, a second installation chamber, and a main supply flow path that are arranged so that the fluid can sequentially pass therethrough; a primary decompression unit which is installed in the housing in order to reduce the pressure of the fluid by adjusting the flow rate of the fluid flowing from the entrance to the first installation chamber; and a secondary decompression unit which is installed in the housing in order to reduce the pressure of the fluid by adjusting the flow rate of the fluid flowing from the first installation chamber to the second installation chamber, wherein the fluid flowing through the entrance is primarily decompressed by using the primary decompression unit, and then is secondarily decompressed, by using the secondary decompression unit, to have lower pressure than that of the fluid decompressed by the primary decompression unit and is supplied to the main supply flow path.

Description

pressure regulator

The present invention relates to a pressure regulator, and more particularly, to a pressure regulator capable of supplying a fluid supplied at a high pressure at a constant pressure and flow rate by stepwise pressure reduction through primary and secondary pressure reduction processes.

In general, firefighters who extinguish a fire are supplied with air through a breathing apparatus at the scene of a fire. This breathing apparatus supplies air from an air container loaded in the form of a backpack on the back of a firefighter to a mask worn on the firefighter's face. At this time, a regulator is provided in at least one of the air box and the mask so that the air from the air box can be supplied by reducing the pressure of the air to the mask worn by the firefighter so that the high-pressure air does not cause difficulty in breathing of the firefighter. In this way, a breathing apparatus composed of an air cylinder, a mask, and a regulator is made up of a set, which is worn by a firefighter and put into a fire site to extinguish a fire or rescue lives.

In addition, structures having closed spaces, such as buildings and ships, are equipped with personal breathing apparatuses to help people breathe in the event of a fire and are used for response.

As a breathing device that supplies air to the user, a Self-Contained Breathing Apparatus (SCBA) for firefighters or a Self-Contained Underwater Breathing Apparatus (SCUBA) used by scuba divers is representative.

For example, Korea Patent Registration No. 1832817 (2018.02.21) discloses an air respirator that is easy to carry and handle and is easy to use in an emergency.

In the air respirator disclosed in the publication, compressed air is stored in a storage container, and the air discharged from the storage container is reduced in pressure by a pressure reducer connected to the storage container and supplied to the user. The pressure reducer serves the same purpose applied to gas supplies used by firefighters and scuba divers.

However, the conventional pressure reducer has a disadvantage in that the pressure of the output air changes greatly as the pressure of the air discharged from the storage container changes due to the change in the amount of air stored in the storage container containing the air. That is, the conventional pressure reducer has a problem in that the output pressure rapidly decreases when the pressure of the air discharged from the storage container is greater than or less than a preset level.

The present invention has been devised in view of the above points, and by stepwise pressure reduction of high-pressure fluid through primary and secondary pressure reduction processes, even if the pressure of the supply fluid changes, the pressure of the fluid can be stably reduced to the required pressure and supplied. It is an object of the present invention to provide a pressure regulator capable of

A pressure regulator according to the present invention for solving the above object is a pressure regulator for reducing and supplying compressed fluid, comprising an inlet through which the fluid passes sequentially, a first installation chamber, a second installation chamber, and the like. , a housing having a main supply passage; a primary pressure reducing unit installed in the housing to reduce the pressure of the fluid by controlling the flow rate of the fluid flowing from the inlet to the first installation chamber; and a secondary decompression unit installed in the housing to reduce the pressure of the fluid by adjusting the flow rate of the fluid flowing from the first installation chamber to the second installation chamber; After primary decompression using a unit, secondary decompression is lowered than the pressure of the fluid depressurized by the primary decompression unit using the secondary decompression unit, and then supplied to the main supply passage.

The primary depressurization unit controls the primary plunger in such a way that a separation distance between the primary plunger installed in the housing and the primary plunger orifice inside the primary plunger is adjusted so as to guide the fluid at the inlet to the first installation chamber. A primary plug is installed on the primary plunger to control the flow rate of fluid passing therethrough, and the secondary decompression unit is installed in the housing to guide the fluid passing through the first installation chamber to the second installation chamber. and a secondary plug installed on the secondary plunger to adjust the flow rate of the fluid passing through the secondary plunger in such a way that a separation distance from the secondary plunger orifice inside the secondary plunger is controlled.

The pressure regulator according to the present invention includes a primary cap coupled to the housing so as to cover the first installation groove; a primary stopper pin provided on the primary cap to protrude toward the primary plug and limiting a moving distance of the primary plug by coming into contact with the primary plug; a secondary cap coupled to the housing to cover the second installation groove; and a secondary stopper pin provided on the secondary cap to protrude toward the secondary plug and limiting a moving distance of the secondary plug by coming into contact with the secondary plug.

The primary cap is screwably coupled to the housing so that a distance between the primary cap and the primary plug can be adjusted, and the secondary cap is coupled to the housing so as to be screwable so as to provide a distance between the secondary cap and the secondary plug. Distance is adjustable.

The primary stopper pin is coupled to the primary cap in a screw movement so that a distance between the primary stopper pin and the primary plug can be adjusted.

The secondary stopper pin is coupled to the secondary cap so that a screw movement is possible so that a distance between the secondary stopper pin and the secondary plug can be adjusted.

The primary plug includes a primary plug body and a primary plug packing provided at one end of the primary plug body to contact the primary plunger and block the primary plunger orifice and made of a softer material than the primary plug body, The secondary plug may include a secondary plug body and a secondary plug packing provided at one end of the secondary plug body and made of a softer material than the secondary plug body to contact the secondary plunger and block the secondary plunger orifice. there is.

The housing is provided with an emergency outlet capable of discharging the fluid flowing into the main supply passage to the outside of the housing, and when the pressure of the fluid flowing into the main supply passage exceeds a predetermined level, the main supply passage An emergency valve unit operated by the pressure of the fluid flowing into the main supply passage may be installed to allow the fluid in the main supply passage to flow to the emergency outlet without blocking the flow of the fluid through the supply passage.

A coupler having a coupler passage connected to the main supply passage is coupled to the housing so that the fluid flowing into the main supply passage can pass, and the main supply passage and the emergency outlet are connected between the housing and the coupler. An emergency discharge path is provided, and the emergency valve unit is made of a hollow shape surrounding the coupler and is moved by the pressure of the fluid flowing into the main supply passage to regulate the flow of fluid through the emergency discharge path. and an emergency plug movably installed in the housing so as to be movable, and an emergency spring for applying an elastic force to the emergency plug in a direction to block fluid flow between the main supply passage and the emergency discharge passage.

The pressure regulator according to the present invention can effectively reduce and supply fluid with fewer parts and a simpler structure than the prior art using a diaphragm.

In addition, since the pressure regulator according to the present invention firstly depressurizes a high-pressure fluid with a primary decompression unit and then depressurizes it secondarily with a secondary decompression unit, the fluid can be more stably decompressed and supplied at a constant pressure.

In addition, the pressure regulator according to the present invention adjusts the position of the primary stopper pin relative to the primary cap, adjusts the position of the primary cap relative to the housing, or adjusts the elastic force of the primary spring relative to the primary plunger, thereby controlling the primary plug. The moving distance of can be changed in various ways. Therefore, it is possible to change and use the primary decompression rate for the fluid in various ways.

In addition, the pressure regulator according to the present invention adjusts the position of the secondary stopper pin relative to the secondary cap, adjusts the position of the secondary cap relative to the housing, or adjusts the elastic force of the secondary spring relative to the secondary plunger. The moving distance of can be changed in various ways. Therefore, it is possible to change and use the secondary decompression rate for the first depressurized fluid in various ways.

1 shows a use example of a pressure regulator according to a first embodiment of the present invention.

2 is a perspective view showing a pressure regulator according to a first embodiment of the present invention.

3 is a cross-sectional view showing a pressure regulator according to a first embodiment of the present invention.

4 is a cross-sectional view showing some configurations of the pressure regulator according to the first embodiment of the present invention.

5 is a cross-sectional view showing a part of a primary pressure reducing unit provided in the pressure regulator according to the first embodiment of the present invention.

6 and 7 are for explaining the primary pressure reducing method of the pressure regulator according to the first embodiment of the present invention.

8 is a cross-sectional view showing some configurations of the pressure regulator according to the first embodiment of the present invention.

9 is a cross-sectional view showing a portion of a secondary pressure reducing unit provided in the pressure regulator according to the first embodiment of the present invention.

10 is for explaining the secondary pressure reducing method of the pressure regulator according to the first embodiment of the present invention.

11 is a cross-sectional view showing some configurations of the pressure regulator according to the first embodiment of the present invention.

12 and 13 are for explaining the operation of the emergency valve unit provided in the pressure regulator according to the first embodiment of the present invention.

Hereinafter, a pressure regulator according to the present invention will be described in detail with reference to the drawings.

1 shows a use example of a pressure regulator according to a first embodiment of the present invention, FIG. 2 is a perspective view showing a pressure regulator according to a first embodiment of the present invention, and FIG. 3 is a first embodiment of the present invention 4 is a cross-sectional view showing some configurations of the pressure regulator according to the first embodiment of the present invention.

As shown in the figure, the pressure regulator 100 according to the first embodiment of the present invention can supply compressed fluid by reducing the pressure.

Hereinafter, the pressure regulator 100 according to the first embodiment of the present invention is connected to the storage tank 10 in which air or oxygen is stored to depressurize the high-pressure gas and supply it to the mask 20 that the user can wear. explain with an example. The high-pressure gas stored in the storage tank 10 may be reduced by the pressure regulator 100 and supplied to the pressure regulator 21 of the mask 20 through the connection tube 30 . The pressure adjusting unit 21 of the mask 20 may reduce the gas supplied from the pressure regulator 100 to a preset pressure and then supply the gas to the inside of the mask 20 .

The pressure regulator 100 includes a housing 200 having a passage through which gas can pass therein, a pressure reducing unit 300 for reducing the supplied high-pressure gas, and emergency discharge of gas from the housing 200. It includes an emergency valve unit 400 and an alarm unit 500 generating an alarm sound when the pressure of the supplied gas drops.

The housing 200 includes a housing body 210 having a passage through which gas can pass. The housing body 210 is provided with an inlet 211 into which compressed gas is introduced, a decompression space 215 in which the decompression unit 300 is installed, and a main supply passage 212 through which the decompressed gas is discharged. The decompression space 215 includes a first installation room 216 and a second installation room 223 . The first installation chamber 216 is connected to the inlet 211 through the primary inflow passage 213, and the second installation chamber 223 is connected to the first installation chamber through the connection passage 219 and the secondary inflow passage 221. (216) is connected. The gas flowing into the inlet 211 passes through the primary inflow passage 213, the first installation chamber 216, the connection passage 219, the secondary inflow passage 221, the second installation chamber 223, It may flow into the coupler 250 connected to the housing 200 by sequentially passing through the main supply passage 212 . A tapered groove 217 is provided between the primary inflow passage 213 and the first installation chamber 216 . The tapered groove 217 is formed in a form gradually expanding toward the first installation chamber 216 from the primary inflow passage 213 . A tapered groove 224 is also provided between the secondary inflow passage 221 and the second installation chamber 223 . The tapered groove 224 is formed in a form that gradually expands toward the second installation chamber 223 from the secondary inflow passage 221 .

In addition, the housing body 210 has an emergency outlet 226 for emergency discharge of gas, a bypass passage 230 through which high-pressure gas such as high-pressure gas flowing into the inlet 211 is supplied, and a second installation room A sub supply passage 232 connected to the second installation chamber 223 and a buffer chamber 234 connected to the sub supply passage 232 are provided so that the gas of 223 can flow in.

A coupler 240 connected to the storage tank 10 is coupled to the inlet 211 . A filter 242 for filtering gas introduced from the storage tank 10 may be installed inside the coupler 240 . A coupler 250 is connected to the main supply passage 212 . In addition, another coupler 260 is coupled to one side of the housing body 210 so that the high-pressure gas flowing into the inlet 211 can flow. A pressure gauge 40 may be connected to the coupler 260 .

In addition to the illustrated configuration, the housing 200 includes an inlet 211 into which compressed gas is introduced and a main supply passage 212 through which the reduced gas is discharged, a decompression unit 300, and an emergency valve unit 400. ) and various other configurations in which the alarm unit 500 can be installed.

The decompression unit 300 includes a primary decompression unit 310 for primary decompression of the high-pressure gas flowing into the inlet 211 and a secondary decompression unit 350 for secondary decompression of the gas reduced by the primary decompression unit 310. ).

The primary decompression unit 310 is installed in the first installation room 216 . The primary decompression unit 310 includes a primary plunger 311 movably installed inside the housing 200 to allow gas to flow, and a primary plunger 311 movably installed inside the primary plunger 311. Movement of the primary plug 330 for regulating the flow of gas introduced into the interior, the primary cap 336 coupled to the housing body 210 to cover the first installation chamber 216, and the primary plug 330 A primary stopper pin 340 provided on the primary cap 336 to limit the distance is included.

Referring to FIGS. 4 and 5 , the primary plunger 311 is movably installed inside the housing 200 to guide the gas flowing into the inlet 211 to the first installation chamber 216 . The primary plunger 311 includes a primary plunger body 312 inserted into the primary inflow passage 213 of the housing 200 and a primary plunger head 313 disposed in the first installation chamber 216 of the housing 200. include

The primary plunger body 312 protrudes from the center of one end of the primary plunger head 313 . A primary plunger inlet 314 is provided inside the primary plunger body 312 . The primary plunger introduction path 314 may guide the compressed gas flowing into the inlet 211 of the housing 200 to the inside of the primary plunger head 313 .

Inside the primary plunger head 313, a primary plunger seat portion 315 having a primary plunger orifice 316 connected to the primary plunger inlet 314 is provided, and a primary plunger chamber 317 connected to the primary plunger orifice 316. ), and a primary plunger discharge path 318 connected to the primary plunger chamber 317 is provided. The primary plug 330 is movably installed in the primary plunger chamber 317 and the primary plunger orifice 316 may be opened and closed by the primary plug 330 . The primary plunger chamber 317 is formed to open to the outside of the primary plunger head 313 and is sealed by the primary plug 330 . Therefore, gas flowing into the primary plunger chamber 317 cannot flow toward the primary cap 336 through the primary plunger chamber 317 . The primary plunger discharge path 318 is exposed into the first installation chamber 216 and allows gas in the primary plunger chamber 317 to flow into the first installation chamber 216 .

In addition, the primary plunger 311 includes a tapered portion 320 and a primary plunger groove 322 . The taper portion 320 is disposed at one end of the primary plunger head 313 to face the taper groove 217 of the housing 200, and the primary plunger groove 322 is disposed at the other end of the primary plunger head 313. It is formed so as to open into one installation chamber 216. The tapered portion 320 has a tapered shape to correspond to the taper groove 217 .

A sealing material 324 is disposed on the outer surface of the primary plunger body 312 . The sealing material 324 seals between the primary plunger body 312 and the housing body 210 to prevent gas passing through the primary plunger 311 from flowing toward the primary cap 336 .

The primary plunger 311 may be changed to various other structures capable of guiding gas flowing into the inlet 211 of the housing 200 to the first installation chamber 216 in addition to the illustrated structure.

The primary plug 330 is movably installed inside the primary plunger 311 to open and close the primary plunger orifice 316 . The primary plug 330 is movably disposed in the primary plunger chamber 317 to prevent gas from flowing through the primary plunger chamber 317 toward the primary cap 336 . The primary plug 330 may open and close the primary plunger orifice 316 in a manner in contact with the primary plunger seat 315 or spaced apart from the primary plunger seat 315 .

The primary plug 330 includes a primary plug body 331 and a primary plug packing 332 provided at one end of the primary plug body 331 . The primary plug body 331 is shaped to be movable in the primary plunger chamber 317 with its outer surface in contact with the inner surface of the primary plunger 311 . The primary plug packing 332 is made of a softer material than the primary plug body 331 and may seal the primary plunger orifice 316 by contacting the primary plunger seat 315 . A plug sealing material 334 is coupled to the outer surface of the primary plug body 331 . The plug sealing material 334 seals between the primary plug body 331 and the primary plunger 311 to prevent gas passing through the primary plunger orifice 316 from flowing toward the primary cap 336 through the primary plunger chamber 317. block

A moving distance of the primary plug 330 may be limited by the primary stopper pin 340 so that a portion where the plug sealing material 334 is disposed does not completely pass through the primary plunger chamber 317 .

As shown in FIG. 4 , the primary plug packing 332 may come into close contact with the primary plunger seat 315 to seal the primary plunger orifice 316 . Also, as shown in FIG. 6 , the primary plug 330 may be pushed toward the primary cap 336 by the pressure of the compressed gas flowing into the primary plunger orifice 316 and separated from the primary plunger seat 315 . When the primary plug 330 is spaced from the primary plunger seat portion 315, the primary plunger orifice 316 is opened and the gas flowing through the primary plunger inlet passage 314 flows through the primary plunger orifice 316 and the primary plunger discharge passage. It may pass through 318 and flow into the first installation room 216 .

The primary plug 330 may open and close the primary plunger orifice 316 and adjust the flow rate of gas passing through the primary plunger orifice 316 . When the primary plug 330 opens the primary plunger orifice 316, the flow rate of gas through the primary plunger orifice 316 is less than the flow rate of gas through the primary plunger inlet 314. Therefore, the compressed gas flowing into the primary plunger inlet passage 314 is depressurized while passing through the primary plunger orifice 316, and the depressurized gas flows into the first installation chamber 216 through the primary plunger outlet passage 318. do.

As the primary plug 330 moves away from the primary plunger seat 315, the flow resistance of the gas passing through the primary plunger orifice 316 decreases, so that the flow rate of the gas passing through the primary plunger orifice 316 may increase. . In addition, the pressure of the gas flowing into the first installation chamber 216 through the primary plunger discharge passage 318 may change according to the flow rate of the gas passing through the primary plunger orifice 316 .

For example, when the primary plug 330 moves relatively slightly and is separated from the primary plunger seat 315, the flow rate of gas passing through the primary plunger orifice 316 is relatively reduced, so that the gas is reduced to a relatively greater extent. It can be. On the other hand, when the primary plug 330 moves relatively much and is separated from the primary plunger seat 315, the flow rate of the gas passing through the primary plunger orifice 316 increases relatively, so that the gas can be decompressed at a relatively small decompression rate. there is.

The primary plug 330 may be movably inserted into the primary plunger chamber 317 to open and close the primary plunger orifice 316 in addition to the illustrated structure.

The primary cap 336 is coupled to the housing 200 to cover the first installation chamber 216 . A primary cap screw 337 is provided on the outer surface of the primary cap 336 . The primary cap 336 is screwably coupled to the housing 200 in such a way that the primary cap thread 337 engages the housing 200 . The position of the primary cap 336 may be adjusted by a screw movement of the primary cap 336 . A primary stopper pin 340 is provided at the center of the primary cap 336 .

The primary stopper pin 340 protrudes toward the primary plug 330 . A tip portion 341 that can contact the primary plug 330 is provided at an end of the primary stopper pin 340 . The tip portion 341 has a shape in which the width gradually decreases toward the primary plug 330 . When the primary plug 330 moves toward the primary cap 336, an end of the tip portion 341 may contact the primary plug 330. At this time, the primary stopper pin 340 may prevent the primary plug 330 from moving.

The primary cap 336 may be changed to various other structures installed in the housing 200 to cover the first installation chamber 216 other than the illustrated structure.

In addition, the primary stopper pin 340 may be changed to various other structures supported by the primary cap 336 so as to come into contact with the primary plug 330 other than the illustrated structure. As another exemplary embodiment, the primary stopper pin 340 may be coupled to the primary cap 336 in a position-adjustable manner.

A user may set the moving distance of the primary plug 330 in various ways by adjusting the position of the primary cap 336 .

That is, the user may limit the moving distance of the primary plug 330 by adjusting the separation distance between the primary cap 336 and the primary plunger 311 . For example, if the distance between the primary cap 336 and the primary plunger 311 is relatively small, the distance between the primary plug 330 and the primary stopper pin 340 is narrowed and the primary plug 330 moves. The distance can be made relatively small. On the other hand, when the distance between the primary cap 336 and the primary plunger 311 is relatively increased, the distance between the primary plug 330 and the primary stopper pin 340 increases, so that the primary plug 330 is separated from the primary plunger seat. A separation distance from the unit 315 may be relatively large.

In this way, the user may appropriately adjust the position of the primary cap 336 to limit the movement distance of the primary plug 330 in various ways, and through this, the decompression rate of the gas may be variously changed.

A primary spring 343 is interposed between the primary plunger 311 and the primary cap 336 . One end of the primary spring 343 is inserted into the primary plunger groove 322 of the primary plunger 311 and the other end of the primary spring 343 comes into contact with the inner surface of the primary cap 336 . The primary spring 343 applies an elastic force to the primary plunger 311 in a direction away from the primary cap 336 .

The primary plunger 311 may move relative to the housing 200, but may move while compressing the primary spring 343 only when an external force of a predetermined magnitude or more is applied due to the elastic force of the primary spring 343. That is, the primary plunger 311 compresses the primary spring 343 by the pressure of the gas when the external force received from the gas introduced through the inlet 211 is greater than the elastic force of the primary spring 343 pressing the primary plunger 311. while pushing it towards the primary cap 336. The elastic coefficient of the primary spring 343 may be appropriately designed according to the primary target decompression rate of the pressure regulator 100 .

As shown in FIG. 7 , when the primary plunger 311 is pushed toward the primary cap 336 while compressing the primary spring 343, the distance between the primary plug 330 and the primary stopper pin 340 is narrowed. As a result, The movement distance of the primary plug 330 is restricted to be relatively small. Therefore, it is possible to limit the moving distance of the primary plug 330 by changing the magnitude of the elastic force of the primary spring 343 .

For example, if the primary spring 343 is designed to have a relatively small elastic force, the primary plunger 311 moves relatively easily by the pressure of gas flowing into the inlet 211 . In this case, it is possible to limit the moving distance of the primary plug 330 to be relatively small by moving the primary plunger 311 even in the case of gas having a relatively small pressure.

On the other hand, if the primary spring 343 is designed to have a relatively large elastic force, the primary plunger 311 can move only when a gas having a relatively high pressure is supplied.

If the primary spring 343 having a relatively small elastic force is used, it is possible to obtain an additional decompression effect by the movement of the primary plunger 311 . That is, when the gas having the same pressure is supplied, if the primary spring 343 having a relatively small elastic force is used, the movement distance of the primary plug 330 can be further restricted by the movement of the primary plunger 311. can And it is possible to depressurize the gas supplied through this to a smaller pressure.

Meanwhile, the elastic force applied to the primary plunger 311 by the primary spring 343 may be adjusted according to the position of the primary cap 336 . For example, if the position of the primary cap 336 is adjusted such that the distance between the primary plunger 311 and the primary cap 336 is narrowed, the compression amount of the primary spring 343 is increased so that the primary spring 343 is attached to the primary plunger ( 311) increases. On the other hand, if the position of the primary cap 336 is adjusted so that the distance between the primary plunger 311 and the primary cap 336 is increased, the amount of compression of the primary spring 343 is reduced so that the primary spring 343 moves away from the primary plunger 311. The elastic force applied to it is reduced. Therefore, it is also possible to limit the movement of the primary plunger 311 by adjusting the position of the primary cap 336 .

As shown, the primary spring 343 resists the pressure of the gas pressing the primary plunger 311 toward the primary cap 336, in addition to the compression spring structure interposed between the primary plunger 311 and the primary cap 336. It may be changed to various other structures capable of applying elastic force to the primary plunger 311 in the direction.

Referring to FIGS. 3 , 4 , 8 and 9 , the secondary decompression unit 350 is installed in the second installation room 223 . The secondary decompression unit 350 may secondarily reduce the pressure of the gas reduced by the primary decompression unit 310 in the same principle as the primary decompression unit 310 . The pressure of the gas decompressed by the secondary decompression unit 350 is lower than the pressure of the decompressed gas by the primary decompression unit 310 . The secondary decompression unit 350 includes a secondary plunger 351 movably installed inside the housing 200 so as to flow gas, and a secondary plunger 351 movably installed inside the secondary plunger 351. Movement of the secondary plug 370 for regulating the flow of gas flowing into the interior, the secondary cap 376 coupled to the housing body 210 to cover the second installation chamber 223, and the secondary plug 370 It includes a secondary stopper pin 380 coupled to the secondary cap 376 to limit the distance.

The secondary plunger 351 is movably installed inside the housing 200 to guide gas flowing into the connection passage 219 to the second installation chamber 223 . The secondary plunger 351 includes a secondary plunger body 352 inserted into the secondary inflow passage 221 of the housing 200 and a secondary plunger head 353 disposed in the second installation chamber 223 of the housing 200. include

The secondary plunger body 352 protrudes from the center of one end of the secondary plunger head 353 . A secondary plunger inlet 354 is provided inside the secondary plunger body 352 . The secondary plunger introduction passage 354 may guide gas flowing into the connection passage 219 to the inside of the secondary plunger head 353 .

A secondary plunger seat portion 355 having a secondary plunger orifice 356 connected to the secondary plunger inlet 354 is provided inside the secondary plunger head 353, and a secondary plunger chamber 357 connected to the secondary plunger orifice 356. ) and a secondary plunger discharge path 358 connected to the secondary plunger chamber 357 is provided. A secondary plug 370 is movably installed in the secondary plunger chamber 357 and the secondary plunger orifice 356 can be opened and closed by the secondary plug 370 . The secondary plunger chamber 357 is formed to open to the outside of the secondary plunger head 353 and is sealed by the secondary plug 370 . Therefore, gas cannot flow toward the secondary cap 376 through the secondary plunger chamber 357 . The secondary plunger discharge path 358 is exposed into the second installation chamber 223 and allows gas to flow into the second installation chamber 223 .

In addition, the secondary plunger 351 is provided with a tapered portion 360 and a secondary plunger groove 362 . The tapered portion 360 is disposed at one end of the secondary plunger head 353 to face the taper groove 224 of the housing 200, and the secondary plunger groove 362 is disposed at the other end of the secondary plunger head 353. It is formed so as to open into the 2 installation chambers 223. The tapered portion 360 has a tapered shape to correspond to the taper groove 224 .

A sealing material 364 is disposed on the outer surface of the secondary plunger body 352 . The sealing material 364 seals between the secondary plunger body 352 and the housing body 210 to prevent gas passing through the secondary plunger 351 from flowing toward the secondary cap 376 .

The secondary plunger 351 may be changed to various other structures capable of guiding gas flowing into the inlet 211 of the housing 200 toward the outlet 112 in addition to the illustrated structure.

The secondary plug 370 is movably installed inside the secondary plunger 351 to open and close the secondary plunger orifice 356 . The secondary plug 370 is movably disposed in the secondary plunger chamber 357 to prevent gas from flowing toward the secondary cap 376 through the secondary plunger chamber 357 . The secondary plug 370 may open and close the secondary plunger orifice 356 in a manner in contact with the secondary plunger seat 355 or spaced apart from the secondary plunger seat 355 .

The secondary plug 370 includes a secondary plug body 371 and a secondary plug packing 372 provided at one end of the secondary plug body 371 . The secondary plug body 371 has a shape capable of moving in the secondary plunger chamber 357 with its outer surface in contact with the inner surface of the secondary plunger 351 . The secondary plug packing 372 is made of a softer material than the secondary plug body 371 and may seal the secondary plunger orifice 356 by contacting the secondary plunger seat 355 . A plug sealing material 374 is coupled to the outer surface of the secondary plug body 371 . The plug sealing material 374 seals between the secondary plug body 371 and the secondary plunger 351 to prevent gas passing through the secondary plunger orifice 356 from flowing toward the secondary cap 376 through the secondary plunger chamber 357. block

A moving distance of the secondary plug 370 may be limited by the secondary stopper pin 380 so that a portion where the plug sealing material 374 is disposed does not completely pass through the secondary plunger chamber 357 .

As shown in FIG. 8 , the secondary plug packing 372 of the secondary plug 370 may be in close contact with the secondary plunger seat 355 to seal the secondary plunger orifice 356 . Also, as shown in FIG. 10 , the secondary plug 370 may be pushed toward the secondary cap 376 by the pressure of the gas flowing into the secondary plunger orifice 356 and separated from the secondary plunger seat 355 . When the secondary plug 370 is spaced apart from the secondary plunger seat 355, the secondary plunger orifice 356 is opened and the gas flowing through the secondary plunger inlet passage 354 passes through the secondary plunger orifice 356 to form the second plunger orifice 356. It can flow into the installation room 223.

The secondary plug 370 may open and close the secondary plunger orifice 356 and adjust the flow rate of gas passing through the secondary plunger orifice 356 . When the secondary plug 370 opens the secondary plunger orifice 356, the flow rate of gas passing through the secondary plunger orifice 356 is smaller than the flow rate of gas passing through the secondary plunger inlet 354. Accordingly, the gas flowing into the secondary plunger inlet passage 354 is depressurized while passing through the secondary plunger orifice 356, and the depressurized gas flows into the second installation chamber 223 through the secondary plunger outlet passage 358.

As the secondary plug 370 is further away from the secondary plunger seat portion 355, the flow resistance of the gas passing through the secondary plunger orifice 356 decreases, so that the flow rate of the gas passing through the secondary plunger orifice 356 may increase. . In addition, the pressure of the gas flowing into the second installation chamber 223 through the secondary plunger outlet 358 may be changed according to the flow rate of the gas passing through the secondary plunger orifice 356 .

For example, when the secondary plug 370 moves relatively slightly and is separated from the secondary plunger seat portion 355, the flow rate of gas passing through the secondary plunger orifice 356 is relatively reduced, so that the gas is decompressed relatively more. can On the other hand, when the secondary plug 370 moves relatively far and is separated from the secondary plunger seat 355, the flow rate of the gas passing through the secondary plunger orifice 356 becomes relatively high, so that the gas can be decompressed at a relatively small decompression rate. there is.

The secondary plug 370 may be movably inserted into the secondary plunger chamber 357 to open and close the secondary plunger orifice 356 in addition to the illustrated structure.

The secondary cap 376 is coupled to the housing 200 to cover the second installation chamber 223 . A secondary cap screw portion 377 is provided on the outer surface of the secondary cap 376 . The secondary cap 376 is screwably coupled to the housing 200 in such a way that the secondary cap thread 377 engages the housing 200 . The position of the secondary cap 376 may be adjusted by a screw movement of the secondary cap 376 . A cap hole 378 into which the secondary cap 376 is inserted is provided at the center of the secondary cap 376 . The cap hole 378 is formed to pass through the secondary cap 376 in the thickness direction. An inner threaded portion 379 is provided in the cap hole 378 .

The secondary stopper pin 380 is coupled to the secondary cap 376 to limit the movement distance of the secondary plug 370 . The secondary stopper pin 380 protrudes from the secondary cap 376 and contacts the secondary plug 370 moving toward the secondary cap 376 to limit the movement of the secondary plug 370 . A stopper pin screw part 382 corresponding to the inner screw part 379 of the secondary cap 376 is provided on the outer surface of the secondary stopper pin 380 . The secondary stopper pin 380 is screwably coupled to the secondary cap 376 in such a way that the stopper pin threaded portion 382 engages with the inner threaded portion 379 . The position of the secondary stopper pin 380 can be adjusted by the screw movement of the secondary stopper pin 380 .

One end of the secondary stopper pin 380 is provided with a tip portion 341 that can contact the secondary plug 370 . The tip portion 341 has a shape in which the width gradually decreases toward the secondary plug 370 . A stopper pin groove 383 is formed at the other end of the secondary stopper pin 380 . A tool used to adjust the position of the secondary stopper pin 380 may be inserted into the stopper pin groove 383 . The user can easily adjust the position of the secondary stopper pin 380 by rotating the secondary stopper pin 380 using a tool.

A cover 387 capable of covering the secondary cap 376 and the secondary stopper pin 380 may be detachably coupled to the housing 200 .

The secondary cap 376 may be changed to various other structures installed in the housing 200 to cover the second installation chamber 223 other than the illustrated structure.

In addition, the secondary stopper pin 380 may be changed to various other structures supported by the secondary cap 376 so as to come into contact with the secondary plug 370 other than the illustrated structure. As another exemplary embodiment, the secondary stopper pin 380 may be fixedly installed on the secondary cap 376 .

The user can set the moving distance of the secondary plug 370 in various ways by adjusting the position of the secondary stopper pin 380 and the position of the secondary cap 376 .

That is, the user may limit the moving distance of the secondary plug 370 by adjusting the height at which the secondary stopper pin 380 protrudes from the secondary cap 376 . For example, if the protruding height of the secondary stopper pin 380 protrudes from the secondary cap 376 is relatively increased, the distance between the secondary plug 370 and the secondary stopper pin 380 becomes smaller, so that the secondary plug 370 The travel distance can be made relatively small. In this case, since the secondary plug 370 is spaced relatively small from the secondary plug seat portion 355 to open the secondary plunger orifice 356, it is possible to depressurize the gas to a smaller pressure. On the other hand, if the protruding height of the secondary stopper pin 380 protrudes from the secondary cap 376 is relatively small, the distance between the secondary plug 370 and the secondary stopper pin 380 increases, thereby reducing the moving distance of the secondary plug 370. can be made relatively large. In this case, since the secondary plug 370 is relatively far away from the secondary plug seat portion 355 to open the secondary plunger orifice 356, it is possible to lower the decompression rate and depressurize the gas to a relatively high pressure.

Also, the user may limit the moving distance of the secondary plug 370 by adjusting the separation distance at which the secondary cap 376 is separated from the secondary plunger 351 . For example, if the distance between the secondary cap 376 and the secondary plunger 351 is relatively small, the distance between the secondary plug 370 and the secondary stopper pin 380 is narrowed, thereby reducing the moving distance of the secondary plug 370. can be made relatively small. On the other hand, if the distance between the secondary cap 376 and the secondary plunger 351 is relatively increased, the interval between the secondary plug 370 and the secondary stopper pin 380 increases, so that the secondary plug 370 has a secondary plug seat portion. The separation distance from (355) can be relatively increased.

In this way, the user can limit the moving distance of the secondary plug 370 in various ways by appropriately adjusting the position of the secondary cap 376 and the secondary stopper pin 380, thereby reducing the decompression rate of the gas. can be varied in many ways.

A secondary spring 385 is interposed between the secondary plunger 351 and the secondary cap 376 . One end of the secondary spring 385 is inserted into the secondary plunger groove 362 of the secondary plunger 351, and the other end of the secondary spring 385 comes into contact with the inner surface of the secondary cap 376. The secondary spring 385 applies an elastic force to the secondary plunger 351 in a direction away from the secondary cap 376 .

The secondary plunger 351 may move relative to the housing 200, but may move while compressing the secondary spring 385 only when an external force of a predetermined size or more is applied due to the elastic force of the secondary spring 385. That is, the secondary plunger 351 compresses the secondary spring 385 by the pressure of the gas when the pressing force received from the gas flowing into the connection passage 219 is greater than the elastic force applied to the secondary plunger 351 by the secondary spring 385. It can be pushed towards the secondary cap 376. The elastic modulus of the secondary spring 385 may be appropriately designed according to the secondary target decompression rate of the pressure regulator 100 .

When the secondary plunger 351 is pushed toward the secondary cap 376 while compressing the secondary spring 385, the distance between the secondary plug 370 and the secondary stopper pin 380 is narrowed, and as a result, the secondary plug 370 The travel distance is limited to a relatively small one. Therefore, it is possible to limit the moving distance of the secondary plug 370 by changing the magnitude of the elastic force of the secondary spring 385 .

For example, if the secondary spring 385 is designed to have a relatively small elastic force, the secondary plunger 351 moves relatively easily by the pressure of the gas flowing into the inlet 111 . In this case, the movement distance of the secondary plug 370 can be limited relatively small by moving the secondary plunger 351 even in the case of a gas having a relatively low pressure.

On the other hand, if the secondary spring 385 is designed to have a relatively large elastic force, the secondary plunger 351 can move only when compressed gas having a relatively high pressure is supplied.

If the secondary spring 385 having a relatively small elastic force is used, it is possible to obtain an additional decompression effect by the movement of the secondary plunger 351 . That is, when the compressed gas having the same pressure is supplied, when the secondary spring 385 having a relatively small elastic force is used, the movement distance of the secondary plug 370 is made smaller by the movement of the secondary plunger 351. can be limited And it is possible to depressurize the gas supplied through this to a smaller pressure.

Meanwhile, the elastic force applied to the secondary plunger 351 by the secondary spring 385 may be adjusted according to the position of the secondary cap 376 . For example, if the position of the secondary cap 376 is adjusted so that the distance between the secondary plunger 351 and the secondary cap 376 is narrowed, the compression amount of the secondary spring 385 is increased, so that the secondary spring 385 moves the secondary plunger ( 351) increases. On the other hand, if the position of the secondary cap 376 is adjusted so that the distance between the secondary plunger 351 and the secondary cap 376 is increased, the compression amount of the secondary spring 385 is reduced so that the secondary spring 385 moves away from the secondary plunger 351. The elastic force applied to it is reduced. Therefore, it is also possible to limit the movement of the secondary plunger 351 by adjusting the position of the secondary cap 376 .

The secondary spring 385 resists the pressure of the gas pressing the secondary plunger 351 toward the secondary cap 376, in addition to the compression spring structure interposed between the secondary plunger 351 and the secondary cap 376 as shown. It may be changed to various other structures capable of applying elastic force to the secondary plunger 351 in the direction.

Referring to FIGS. 3 and 11 to 13 , the emergency valve unit 400 is installed on one side of the housing 200 and can discharge gas through the main supply passage 212 to the outside of the housing 200 . That is, the emergency valve unit 400, when the pressure of the gas flowing into the main supply passage 212 is greater than or equal to a predetermined level, without blocking the flow of fluid through the main supply passage 212, the main supply passage 212 It can be operated by the pressure of the fluid flowing into the main supply passage 212 so that the fluid can flow to the emergency outlet 226 . The emergency outlet 226 is connected to an emergency outlet 228 provided between the housing 200 and the coupler 250, and the emergency outlet 228 is connected to the main supply passage 212.

The emergency valve unit 400 includes an emergency plug 410 movably installed in the emergency discharge passage 228 and an emergency valve spring 414 that elastically supports the emergency plug 410 . The emergency plug 410 includes a hollow emergency plug body 411 and an emergency plug sealing material 412 coupled to the emergency plug body 411 to seal between the coupler 250 and the emergency plug body 411. include The emergency plug 410 may be moved by gas flowing into the main supply passage 212 while covering the coupler 250 . The emergency valve spring 414 applies an elastic force to the emergency plug 410 in the direction of blocking gas flow between the main supply passage 212 and the emergency discharge passage 228 . The emergency plug 410 controls the gas flow between the main supply passage 212 and the emergency discharge passage 228 by moving by the gas and pressure flowing into the main supply passage 212 and the elastic force of the emergency valve spring 414. can do.

As shown in FIG. 12 , when the pressure of the gas flowing into the main supply passage 212 is maintained below a preset level, the emergency plug 410 is moved to the main supply passage 212 by the elastic force of the emergency valve spring 414. ) and the gas flow between the emergency discharge passage 228 can be maintained. At this time, the gas flowing into the main supply passage 212 passes through the coupler passage 252 of the coupler 250 and flows into the connection tube 30 .

On the other hand, as shown in FIG. 13 , when the pressure of the gas flowing into the main supply passage 212 is greater than a preset level, the emergency plug 410 makes an emergency by the pressure of the gas flowing into the main supply passage 212. It is pushed while compressing the valve spring 414. At this time, the emergency plug 410 is spaced apart from one inner side of the housing body 210 and the main supply passage 212 and the emergency discharge passage 228 are connected. Accordingly, gas in the main supply passage 212 may be discharged to the outside of the housing 200 through the emergency discharge passage 228 and the emergency discharge port 226 . Even while the gas in the main supply passage 212 is discharged to the outside of the housing 200 , the depressurized gas may be supplied toward the mask 20 through the coupler 250 . When the gas in the main supply passage 212 is discharged to the outside of the housing 200, the pressure of the gas supplied toward the mask 20 is reduced. And, when the pressure of the gas flowing into the main supply passage 212 is reduced below a preset level, the emergency plug 410 is returned to its original position by the elastic force of the emergency valve spring 414 and the main supply passage 212 and the gas flow between the emergency discharge passage 228 is blocked.

While air or oxygen supplied from the storage tank 10 is supplied to the mask 20 through the pressure regulator 100, the pressure of the air or oxygen reduced by the pressure regulator 100 may change due to various causes. When air or oxygen having a pressure greater than a preset size is supplied to the mask 20 , breathing of the user wearing the mask 20 may become unstable. The emergency valve unit 400 can reduce such problems and increase the safety of use of the pressure regulator 100 by emergencyly discharging gas from the main supply passage 212 to the outside of the housing 200 in such an abnormal situation.

Referring to FIGS. 3 and 11 , the alarm unit 500 is installed in the housing 200 to generate an alarm sound by gas passing through the housing 200 . The alarm unit 500 is capable of fluid flow through the alarm sound generator 510 capable of generating an alarm sound by vibrating the gas depressurized by the decompression unit 300, the sub supply passage 232 and the buffer chamber 234. A connecting sleeve 522 for connecting the connecting sleeve 522, a piston 530 for controlling the flow of gas through the connecting sleeve 522, and a direction in which the piston 530 is spaced apart from the seat portion 523 of the connecting sleeve 522 It includes a push unit 536 for pressing.

The alarm sound generator 510 has a body portion 511 having one end open and having a chamber 512 capable of accommodating gas therein, and coupled to the body portion 511 to form an open end of the body portion 511. A covering head portion 515 is included. The alarm sound generator 510 may generate an alarm sound in the same way as the operating principle of the whistle. The alarm sound generator 510 is disposed so that the gas in the buffer chamber 234 passes, and may generate an alarm sound by vibration of the gas in the process of passing the gas.

In addition to the illustrated configuration, the alarm sound generator 510 is installed to allow gas flowing into the buffer chamber 234 to pass through, and may be changed to various other configurations capable of generating an alarm sound by vibration of the gas.

The connection sleeve 522 is provided in the buffer chamber 234 to be positioned between the alarm sound generator 510 and the piston 530. The connection sleeve 522 may have a seat portion 523 having a passage through which gas can pass through the middle portion thereof, and may be fixed to the housing body 210 .

The seat portion 523 provided with the passage may be integrally provided with the housing body 210 . In this case, the connection sleeve 522 assembled to the housing body 210 as a separate part may be omitted.

The piston 530 is movably installed in the piston chamber 236 of the housing 200 to open and close the passage of the seat portion 523 . The piston chamber 236 is provided between the bypass passage 230 and the buffer chamber 234 . The piston 530 includes a piston body 531 and a piston packing 532 provided at one end of the piston body 531 to face the seat portion 523 . The piston body 531 has a shape capable of moving in the piston chamber 236 with its outer surface in contact with the inner surface of the housing body 210 . The piston packing 532 is made of a softer material than the piston body 531 and can stably seal the passage of the seat part 523 by contacting the seat part 523 . A piston sealing material 534 is provided on the outer surface of the piston body 531 . The piston sealing material 534 prevents gas from passing through the piston chamber 236 by sealing between the outer surface of the piston body 531 and the inner surface of the housing body 210 .

The piston 530 receives force in a direction in which it is brought into close contact with the seat portion 523 by the high-pressure gas flowing into the bypass passage 230 . As shown in FIG. 11 , when the pressure of the gas flowing into the bypass passage 230 is maintained above a preset operating pressure, the piston 530 comes into close contact with the seat portion 523 to prevent the seat portion 523 from moving. The passage can be kept blocked. In this case, since the gas passing through the sub supply passage 232 cannot flow into the buffer chamber 234, the alarm sound generator 510 does not operate.

The push unit 536 is installed between the alarm sound generator 510 and the piston 530 so as to apply force to the piston 530 in a direction of opening the passage of the seat portion 523 . The push unit 536 includes a push block 537 movably disposed in the buffer chamber 234 and a push rod 540 movably inserted into the passage of the seat portion 523 so as to come into contact with the piston 530. and a push spring 544 for applying an elastic force to the push rod 540 in a direction of separating the piston 530 from the seat portion 523. One end of the push block 537 is provided with a taper groove 538 in which a portion of the push rod 540 is accommodated. The push rod 540 may move while being inserted into the passage of the seat portion 523 . A gap 546 through which gas can pass is provided between the outer surface of the push rod 540 and the inner surface of the connection sleeve 522 . The end of the push rod 540 has a round curved shape and is inserted into the taper groove 538 of the push block 537 to maintain stable contact with the push block 537 . The push spring 544 has a compression spring structure, one end of which is supported by the alarm sound generator 510 and the other end in contact with the push block 537. The elastic force of the push spring 544 is transmitted to the piston 530 through the push block 537 and the push rod 540 .

When the pressure of the gas flowing into the bypass passage 230 drops and the force of the push unit 536 pushing the piston 530 is greater than the force of the gas in the bypass passage 230 pushing the piston 530, the push unit 536 ) separates the piston 530 from the seat portion 523. At this time, gas flows into the buffer chamber 234 and the alarm sound generator 510 may generate an alarm sound.

In addition to the illustrated configuration, the push unit 536 may be changed to various other configurations capable of pressing the piston 530 in a direction away from the seat portion 523 . In addition, the push spring 544 may be changed to various other structures capable of applying an elastic force to the push rod 540 in addition to the compression spring structure as shown.

The alarm unit 500 according to the present invention is the gas supplied from the storage tank 10 when the pressure of the gas discharged from the storage tank 10 is smaller than a preset size due to the decrease in the storage amount of the gas stored in the storage tank 10. It is possible to generate an alarm sound stably by using the flow of

Reference numeral 600 in the drawings indicates an emergency charging valve unit. The emergency filling valve unit 600 may be used to fill the storage tank 10 with gas while the pressure regulator 100 is connected to the storage tank 10 .

Although the preferred examples of the present invention have been described above, the scope of the present invention is not limited to the forms described and illustrated above.

For example, in the drawings, the pressure regulator 100 according to the present invention is described as reducing the gas stored in the storage tank 10, but the pressure regulator 100 according to the present invention reduces the pressure of various fluids other than compressed gas. can be used to do

In addition, although it is shown in the drawing that the first installation room 216 and the second installation room 223 are connected to each other through the connection passage 219 and the secondary inlet passage 221, the first installation room 216 and the second installation room 216 are connected to each other. The connection structure of the second installation room 223 may be variously changed.

In addition, although the drawing shows that the alarm unit 500 of the pressure regulator 100 according to the present invention operates by receiving primary and secondary reduced pressure, the alarm unit 500 operates by receiving primary and secondary reduced pressure, or , It may be configured to operate by receiving the gas supplied to the housing 200 directly.

In the above, the present invention has been shown and described in relation to preferred embodiments for illustrating the principles of the present invention, but the present invention is not limited to the configuration and operation as shown and described. Rather, it will be appreciated by those skilled in the art that many changes and modifications may be made to the present invention without departing from the spirit and scope of the appended claims.

Claims

In the pressure regulator for reducing and supplying the compressed fluid,

A housing having an inlet through which fluid passes in sequence, a first installation chamber, a second installation chamber, and a main supply passage;

a primary pressure reducing unit installed in the housing to reduce the pressure of the fluid by controlling the flow rate of the fluid flowing from the inlet to the first installation chamber; and

A secondary decompression unit installed in the housing to reduce the pressure of the fluid by adjusting the flow rate of the fluid flowing from the first installation chamber to the second installation chamber; includes,

After primary decompression of the fluid flowing into the inlet using the primary decompression unit, second decompression using the secondary decompression unit to lower the pressure of the fluid reduced by the primary decompression unit and then supplying the fluid to the main supply passage. Features a pressure regulator.
According to claim 1,

The primary decompression unit,

A primary plunger installed in the housing to guide the fluid of the inlet to the first installation chamber;

A primary plug installed on the primary plunger to control the flow rate of the fluid passing through the primary plunger in such a way that a separation distance from the primary plunger orifice inside the primary plunger is controlled;

The secondary decompression unit,

A secondary plunger installed in the housing to guide the fluid passing through the first installation chamber to the second installation chamber;

And a secondary plug installed in the secondary plunger to adjust the flow rate of the fluid passing through the secondary plunger in such a way that a separation distance from the secondary plunger orifice inside the secondary plunger is adjusted.
According to claim 2,

a primary cap coupled to the housing to cover the first installation groove;

a primary stopper pin provided on the primary cap to protrude toward the primary plug and limiting a moving distance of the primary plug by coming into contact with the primary plug;

a secondary cap coupled to the housing to cover the second installation groove; and

and a secondary stopper pin provided on the secondary cap to protrude toward the secondary plug and limiting a moving distance of the secondary plug by coming into contact with the secondary plug.
According to claim 3,

The primary cap is coupled to the housing in a screw movement so that a distance between the primary cap and the primary plug can be adjusted,

The pressure regulator according to claim 1 , wherein the secondary cap is coupled to the housing in a screw movement so that a distance between the secondary cap and the secondary plug can be adjusted.
According to claim 3,

The pressure regulator of claim 1 , wherein the primary stopper pin is coupled to the primary cap in a screw movement so that a distance between the primary stopper pin and the primary plug is adjustable.
According to claim 3,

The pressure regulator according to claim 1 , wherein the secondary stopper pin is screwed to the secondary cap so that a distance between the secondary stopper pin and the secondary plug can be adjusted.
According to claim 2,

The primary plug,

a primary plug body;

A primary plug packing provided at one end of the primary plug body and made of a softer material than the primary plug body so as to contact the primary plunger and block the primary plunger orifice;

The secondary plug,

a secondary plug body;

and a secondary plug packing provided at one end of the secondary plug body so as to contact the secondary plunger and block the secondary plunger orifice, and made of a softer material than the secondary plug body.
According to claim 1,

The housing is provided with an emergency outlet for discharging the fluid flowing into the main supply passage to the outside of the housing,

In the housing, when the pressure of the fluid flowing into the main supply passage is greater than a predetermined level, the fluid in the main supply passage can flow to the emergency outlet without blocking the flow of the fluid through the main supply passage. A pressure regulator, characterized in that an emergency valve unit operated by the pressure of the fluid flowing into the main supply passage is installed.
According to claim 8,

A coupler having a coupler passage connected to the main supply passage is coupled to the housing so that the fluid flowing into the main supply passage passes therethrough;

An emergency discharge path connecting the main supply passage and the emergency discharge port is provided between the housing and the coupler,

The emergency valve unit,

An emergency plug formed of a hollow shape surrounding the coupler and movably installed in the housing so as to be movable by the pressure of the fluid flowing into the main supply passage to regulate the flow of fluid through the emergency discharge passage;

and an emergency spring for applying an elastic force to the emergency plug in a direction to block fluid flow between the main supply passage and the emergency discharge passage.