KR102388553B1 - Pressure regulator - Google Patents

Abstract

The present relates a pressure regulator for decompressing a compressed fluid and supplying the decompressed fluid. According to the present invention, the pressure regulator includes: a housing having an inlet, a first installation chamber, a second installation chamber, and a main supply flow path, through which the fluid passes in order; a first decompressing unit installed in the housing to control a flow rate of the fluid flowing from the inlet to the first installation chamber and decompress the pressure of the fluid; and a second decompressing unit installed in the housing to control the flow rate of the fluid flowing from the first installation chamber to the second installation chamber and decompress the pressure of the fluid. After decompressing the fluid flowing into the inlet by using the first decompressing unit, the pressure regulator decompresses the fluid by the second decompressing unit to the lower pressure than that of the fluid decompressed by the first decompressing unit and then, supplies the decompressed fluid to the main supply flow path. The pressure regulator of the present invention can effectively reduce the pressure of a fluid and supply the same with less parts and a simpler structure than the conventional art using a diaphragm.

Description

Pressure Regulator {PRESSURE REGULATOR}

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

In general, firefighters extinguishing a fire are supplied with air through a breathing apparatus at the scene of the fire. Such a breathing apparatus supplies air from a reservoir loaded in the form of a backpack on the firefighter's back to a mask worn on the firefighter's face. At this time, a regulator is provided in at least one of the air tank or the mask so that the air in the air tank can be supplied by reducing the pressure to the mask worn by the firefighter so as not to cause difficulty in breathing of the firefighter due to the high-pressure air. In this way, the breathing apparatus consisting of a reservoir, a mask, and a regulator is made up of one set, worn by a firefighter, and put into a fire scene to extinguish a fire or save lives.

In addition, structures with closed spaces, such as buildings and ships, are equipped with personal breathing apparatuses to help people breathe in case of fire and are sometimes used for countermeasures.

As a breathing device that supplies air to the user, a firefighter's self-contained breathing apparatus (SCBA) or a scuba diver's underwater breathing apparatus (SCUBA: Self-Contained Underwater Breathing Apparatus) are representative.

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

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

However, the conventional pressure reducer has a disadvantage in that the pressure of the output air is greatly changed as the pressure of the air discharged from the storage container changes due to a 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 is rapidly lowered when the pressure of the air discharged from the storage container is greater than or less than a preset size.

Korean Patent No. 1832817 (2018.02.21.)

The present invention has been devised in view of the above, and by depressurizing the high-pressure fluid step by step through the primary and secondary decompression process, even if the supply fluid pressure changes, the fluid pressure can be stably reduced to the required pressure and supplied. An object of the present invention is 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 supplying a compressed fluid by reducing the pressure, the inlet arranged so that the fluid passes sequentially, a first installation chamber, and a second installation chamber; , a housing having a main supply flow path; a primary decompression unit installed in the housing to reduce the pressure of the fluid by adjusting 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 pressure reduction using the unit, the secondary pressure reduction unit is used to secondary pressure lower than the pressure of the fluid decompressed by the primary pressure reduction unit, and then it is characterized in that it is supplied to the main supply passage.

The primary pressure reducing unit includes a primary plunger installed in the housing to guide the fluid at the inlet to the first installation chamber, and the primary plunger in such a way that the separation distance from the primary plunger orifice inside the primary plunger is adjusted. and a primary plug installed on the primary plunger to adjust the flow rate of the fluid passing therethrough, wherein the secondary pressure reducing unit is installed in the housing to guide the fluid passing through the first installation chamber into the second installation chamber and a secondary plug installed on the secondary plunger so as to adjust the flow rate of the fluid passing through the secondary plunger in such a way that the separation distance from the secondary plunger orifice inside the secondary plunger is adjusted.

The pressure regulator according to the present invention comprises: 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 configured to contact the primary plug to limit a movement distance of 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 configured to contact the secondary plug to limit a movement distance of the secondary plug.

The primary cap is screw-movably coupled to the housing so that a distance between the primary cap and the primary plug is adjustable, and the secondary cap is screw-movably coupled to the housing so that a space between the secondary cap and the secondary plug is screwed. The distance is adjustable.

The primary stopper pin is screw-movably coupled to the primary cap so that a distance between the primary stopper pin and the primary plug is adjustable.

The secondary stopper pin is screw-movably coupled to the secondary cap so that a distance between the secondary stopper pin and the secondary plug is adjustable.

The primary plug includes a primary plug body, and a primary plug packing provided at one end of the primary plug body so as to be in contact with the primary plunger and block the primary plunger orifice, and made of a material softer than that of 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 so as to be in contact with the secondary plunger and block the secondary plunger orifice, and made of a material softer than the secondary plug body. there is.

The housing is provided with an emergency outlet for discharging the fluid flowing into the main supply passage to the outside of the housing, and in the housing, when the pressure of the fluid flowing into the main supply passage is equal to or greater than a preset size, the main An emergency valve unit operated by the pressure of the fluid flowing into the main supply passage may be installed so that the fluid of the main supply passage can 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, wherein the emergency valve unit is made of a hollow type surrounding the coupler, and is moved by the pressure of the fluid flowing into the main supply path to regulate the flow of fluid through the emergency discharge path. The emergency plug may include an emergency plug movably installed in the housing so as to be able to do so, and an emergency spring that applies 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 the pressure and supply the fluid with fewer parts and a simple structure compared to the prior art using a diaphragm.

In addition, since the pressure regulator according to the present invention primarily depressurizes the high-pressure fluid by the primary decompression unit and then the secondary decompression unit, the pressure can be supplied by reducing the pressure to a constant pressure more stably.

In addition, the pressure regulator according to the present invention adjusts the position of the primary stopper pin with respect to the primary cap, adjusts the position of the primary cap with respect to the housing, or adjusts the elastic force of the primary spring with respect to the primary plug in various ways, such as can be changed in various ways. Therefore, it is possible to variously change the primary decompression rate for the fluid and use it.

In addition, the pressure regulator according to the present invention adjusts the position of the secondary stopper pin with respect to the secondary cap, adjusts the position of the secondary cap with respect to the housing, or adjusts the elastic force of the secondary spring with respect to the secondary plug secondary plug in various ways. can be changed in various ways. Therefore, it is possible to variously change and use the secondary pressure reduction rate for the primary pressure-reduced fluid.

1 shows an example of use of a pressure regulator according to a first embodiment of the present invention.
2 is a perspective view illustrating a pressure regulator according to a first embodiment of the present invention.
3 is a cross-sectional view illustrating a pressure regulator according to a first embodiment of the present invention.
4 is a cross-sectional view showing a partial configuration of the pressure regulator according to the first embodiment of the present invention.
5 is a cross-sectional view showing a portion 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 reduction method of the pressure regulator according to the first embodiment of the present invention.
8 is a cross-sectional view showing a partial configuration 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 reduction method of the pressure regulator according to the first embodiment of the present invention.
11 is a cross-sectional view showing a partial configuration 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 an example of using 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 a partial configuration of the pressure regulator according to the first embodiment of the present invention.

As shown in the drawing, the pressure regulator 100 according to the first embodiment of the present invention may supply the 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 decompress the high-pressure gas to supply the mask 20 that can be worn by the user. will be described as an example. The high-pressure gas stored in the storage tank 10 may be decompressed by the pressure regulator 100 and supplied to the pressure control unit 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 decompression unit 300 for depressurizing 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 that generates an alarm sound when the pressure of the supplied gas is reduced.

The housing 200 includes a housing body 210 in which a passage through which gas can pass is formed. The housing body 210 is provided with an inlet 211 through which the 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 chamber 216 and a second installation chamber 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. Gas flowing into the inlet 211 includes a primary inflow passage 213 , a first installation chamber 216 , a connection passage 219 , a secondary inflow passage 221 , and a second installation chamber 223 , It may flow to the coupler 250 connected to the housing 200 by sequentially passing through the main supply flow path 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 to gradually expand from the primary inflow passage 213 toward the first installation chamber 216 . 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 to gradually expand from the secondary inflow passage 221 toward the second installation chamber 223 .

In addition, the housing body 210 includes an emergency outlet 226 for emergency discharge of gas, a bypass flow path 230 through which high-pressure gas such as high-pressure gas flowing into the inlet 211 is supplied, and a second installation chamber. 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 be introduced.

A coupler 240 connected to the storage tank 10 is coupled to the inlet 211 . A filter 242 for filtering gas flowing from the storage tank 10 may be installed inside the coupler 240 . A coupler 250 is connected to the main supply flow path 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 through which the compressed gas is introduced, and a main supply flow path 212 through which the reduced pressure gas is discharged, the pressure reducing unit 300 and the emergency valve unit 400 . ) and the alarm unit 500 may be changed to various other configurations in which it may be installed.

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

The primary decompression unit 310 is installed in the first installation chamber 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 . The primary plug 330 for controlling the flow of gas flowing into the inside of the , the primary cap 336 coupled to the housing body 210 to cover the first installation chamber 216 , and the movement of the primary plug 330 . It includes a primary stopper pin 340 provided on the primary cap 336 to limit the distance.

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 inflow path 314 is provided inside the primary plunger body 312 . The primary plunger inflow 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 .

A primary plunger seat portion 315 provided with a primary plunger orifice 316 connected to the primary plunger inflow passage 314 is provided inside the primary plunger head 313, 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. A 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 closed by the primary plug 330 . Therefore, the 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 may flow the gas of the primary plunger chamber 317 into the first installation chamber 216 .

In addition, the primary plunger 311 is provided with a tapered portion 320 and a primary plunger groove 322 . The tapered portion 320 is disposed at one end of the primary plunger head 313 to face the tapered groove 217 of the housing 200 , and the primary plunger groove 322 is formed at the other end of the primary plunger head 313 . 1 is formed to be opened into the installation chamber 216 . The tapered portion 320 has a tapered shape to correspond to the tapered 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 .

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

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 may be movably disposed in the primary plunger chamber 317 to prevent gas from flowing toward the primary cap 336 through the primary plunger chamber 317 . The primary plug 330 may open and close the primary plunger orifice 316 in a manner that is in contact with the primary plunger seat portion 315 or is spaced apart from the primary plunger seat portion 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 has an outer surface in contact with the inner surface of the primary plunger 311 and is configured to move in the primary plunger chamber 317 . The primary plug packing 332 may be made of a material softer than the primary plug body 331 , and may seal the primary plunger orifice 316 by contacting the primary plunger seat portion 315 . And 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

The movement distance of the primary plug 330 may be limited by the primary stopper pin 340 so that the portion on which 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 be in close contact with the primary plunger seat portion 315 to seal the primary plunger orifice 316 . In addition, the primary plug 330 is pushed toward the primary cap 336 by the pressure of the compressed gas flowing into the primary plunger orifice 316 as shown in FIG. 6 and may be spaced apart from the primary plunger seat portion 315 . When the primary plug 330 is spaced apart from the primary plunger seat portion 315, the primary plunger orifice 316 is opened and the gas flowing through the primary plunger inlet 314 flows through the primary plunger orifice 316 and the primary plunger outlet passage. It may be introduced into the first installation chamber 216 through the 318 .

The primary plug 330 may open and close the primary plunger orifice 316 and control 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 the gas through the primary plunger inlet passage 314 . Therefore, the compressed gas flowing into the primary plunger inflow path 314 is decompressed while passing through the primary plunger orifice 316, and the decompressed gas flows into the first installation chamber 216 through the primary plunger discharge path 318. do.

As the primary plug 330 moves away from the primary plunger seat portion 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 path 318 may be changed according to the flow rate of the gas passing through the primary plunger orifice 316 .

For example, when the primary plug 330 moves relatively little and is spaced apart from the primary plunger seat portion 315, the flow rate of the gas passing through the primary plunger orifice 316 is relatively reduced, so that the gas is decompressed to a relatively large extent. can be On the other hand, when the primary plug 330 moves relatively much and is spaced apart from the primary plunger seat portion 315, the flow rate of the gas passing through the primary plunger orifice 316 is relatively large, 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 threadably coupled to the housing 200 in such a way that the primary cap threaded portion 337 engages the housing 200 . The position of the primary cap 336 may be adjusted by the 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 capable of contacting the primary plug 330 is provided at an end of the primary stopper pin 340 . The tip portion 341 has a shape that gradually decreases in width 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 . In this case, the primary stopper pin 340 may prevent movement of the primary plug 330 .

The primary cap 336 may be installed in the housing 200 in addition to the illustrated structure and may be changed to various other structures capable of covering the first installation chamber 216 .

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

The user may set the movement 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 movement distance of the primary plug 330 by adjusting the separation distance between the primary cap 336 and the primary plunger 311 . For example, when the separation distance of the primary cap 336 from the primary plunger 311 is relatively small, the interval between the primary plug 330 and the primary stopper pin 340 is narrowed and the movement of the primary plug 330 is reduced. The distance can be relatively small. On the other hand, if the separation distance of the primary cap 336 from the primary plunger 311 is relatively large, the interval between the primary plug 330 and the primary stopper pin 340 increases so that the primary plug 330 is the primary plunger seat. The separation distance from the part 315 may be relatively large.

As such, the user can variously limit the movement distance of the primary plug 330 by appropriately adjusting the position of the primary cap 336 , and thereby variously change the decompression rate of the gas.

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 is in contact with the inner surface of the primary cap 336 . The primary spring 343 applies an elastic force against 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 certain size 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 flowing through the inlet 211 is greater than the elastic force of the primary spring 343 pressing the primary plunger 311 . It can be pushed toward the primary cap 336 while doing so. The elastic modulus 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, and as a result, The movement distance of the primary plug 330 is limited to be relatively small. Accordingly, it is possible to limit the movement distance of the primary plug 330 in a manner that changes 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 is relatively easily moved by the pressure of the gas flowing into the inlet 211 . In this case, it is possible to limit the movement distance of the primary plug 330 relatively small by moving the primary plunger 311 even for a 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 large 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 a 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 is further limited by the movement of the primary plunger 311. can And it is possible to reduce the pressure of the gas supplied through this to a smaller pressure.

Meanwhile, the elastic force applied by the primary spring 343 to the primary plunger 311 may be adjusted according to the position of the primary cap 336 . For example, 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 narrowed, the compression amount of the primary spring 343 increases, so that the primary spring 343 moves the primary plunger ( 311) increases the elastic force applied to it. 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 compression amount of the primary spring 343 is reduced, so that the primary spring 343 is the primary plunger 311. The elastic force applied to the Accordingly, it is also possible to restrict the movement of the primary plunger 311 in a manner that adjusts the position of the primary cap 336 .

The primary spring 343, in addition to the compression spring structure interposed between the primary plunger 311 and the primary cap 336 as shown, resists the pressure of the gas pressing the primary plunger 311 toward the primary cap 336. It can be changed to various other structures that can apply an elastic force to the primary plunger 311 in the direction.

3, 4, 8 and 9 , the secondary decompression unit 350 is installed in the second installation chamber 223 . The secondary decompression unit 350 may secondarily reduce the pressure of the gas decompressed by the primary decompression unit 310 on the same principle as the primary decompression unit 310 . The pressure of the gas decompressed by the secondary decompression unit 350 is smaller than the pressure of the gas depressurized by the primary decompression unit 310 . The secondary decompression unit 350 includes a secondary plunger 351 movably installed inside the housing 200 to allow gas to flow, and a secondary plunger 351 movably installed inside the secondary plunger 351 . The secondary plug 370 that controls the flow of gas flowing into the inside of the , the secondary cap 376 coupled to the housing body 210 to cover the second installation chamber 223 , and the movement of the secondary plug 370 . and 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 the 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 inflow path 354 is provided inside the secondary plunger body 352 . The secondary plunger inflow path 354 may guide the gas flowing into the connection flow path 219 to the inside of the secondary plunger head 353 .

A secondary plunger seat portion 355 provided with a secondary plunger orifice 356 connected to the secondary plunger inflow passage 354 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. The secondary plug 370 is movably installed in the secondary plunger chamber 357 , and the secondary plunger orifice 356 may 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 closed by the secondary plug 370 . Therefore, gas cannot flow through the secondary plunger chamber 357 towards the secondary cap 376 . The secondary plunger discharge path 358 is exposed into the second installation chamber 223 and may flow gas 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 tapered groove 224 of the housing 200 , and the secondary plunger groove 362 is formed at the other end of the secondary plunger head 353 . 2 is formed to be opened into the installation chamber 223 . The tapered portion 360 has a tapered shape to correspond to the tapered 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 .

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

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 may be movably disposed in the secondary plunger chamber 357 to prevent gas from flowing through the secondary plunger chamber 357 toward the secondary cap 376 . The secondary plug 370 may open and close the secondary plunger orifice 356 in a manner that is in contact with the secondary plunger seat portion 355 or is spaced apart from the secondary plunger seat portion 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 an outer surface in contact with the inner surface of the secondary plunger 351 to be movable in the secondary plunger chamber 357 . The secondary plug packing 372 may be made of a material softer than the secondary plug body 371 and may seal the secondary plunger orifice 356 by contacting the secondary plunger seat portion 355 . And 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 movement distance of the secondary plug 370 may be limited by the secondary stopper pin 380 so that the portion on which the plug sealing material 374 is disposed does not completely pass through the secondary plunger chamber 357 .

As shown in FIG. 8 , in the secondary plug 370 , the secondary plug packing 372 may be in close contact with the secondary plunger seat portion 355 to seal the secondary plunger orifice 356 . In addition, 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 to be spaced apart from the secondary plunger seat portion 355 . When the secondary plug 370 is spaced apart from the secondary plunger seat portion 355 , the secondary plunger orifice 356 is opened, and the gas flowing through the secondary plunger inflow passage 354 passes through the secondary plunger orifice 356 to the second It may flow into the installation chamber 223 .

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

As the secondary plug 370 moves away from the secondary plunger seat portion 355, the flow resistance of the gas passing through the secondary plunger orifice 356 may decrease, 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 discharge path 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 little and is spaced apart from the secondary plunger seat portion 355, the flow rate of the gas passing through the secondary plunger orifice 356 is relatively reduced so that the gas is relatively more decompressed. can On the other hand, when the secondary plug 370 moves relatively much and is spaced apart from the secondary plunger seat part 355, the flow rate of the gas passing through the secondary plunger orifice 356 is relatively large, so that the gas can be decompressed at a relatively small decompression rate. there is.

In addition to the structure shown, the secondary plug 370 may be movably inserted into the secondary plunger chamber 357 to have various other structures capable of opening and closing the secondary plunger orifice 356 .

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 screw-movably coupled to the housing 200 in such a way that the secondary cap screw portion 377 engages the housing 200 . The position of the secondary cap 376 may be adjusted by the screw movement of the secondary cap 376 . A cap hole 378 into which the secondary cap 376 is inserted is provided in the center of the secondary cap 376 . The cap hole 378 is formed to penetrate 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 moving distance of the secondary plug 370 . The secondary stopper pin 380 may limit the movement of the secondary plug 370 by protruding from the secondary cap 376 and making contact with the secondary plug 370 moving toward the secondary cap 376 . A stopper pin screw portion 382 corresponding to the inner screw portion 379 of the secondary cap 376 is provided on the outer surface of the secondary stopper pin 380 . The secondary stopper pin 380 is threadably coupled to the secondary cap 376 in such a way that the stopper pin threaded portion 382 engages 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 .

A tip portion 341 capable of contacting the secondary plug 370 is provided at one end of the secondary stopper pin 380 . 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 that can be 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 installed in the housing 200 to cover the second installation chamber 223 in addition to 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 be in contact with the secondary plug 370 in addition to the illustrated structure. As another exemplary embodiment, the secondary stopper pin 380 may be fixedly installed on the secondary cap 376 .

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

That is, the user may limit the movement 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 protrusion height of the secondary stopper pin 380 protruding from the secondary cap 376 is relatively large, the gap between the secondary plug 370 and the secondary stopper pin 380 becomes small, so that the The moving distance can be 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, when the protrusion height of the secondary stopper pin 380 protruding from the secondary cap 376 is relatively small, the distance between the secondary plug 370 and the secondary stopper pin 380 increases, thereby increasing the movement distance of the secondary plug 370 . can be made relatively large. In this case, since the secondary plug 370 is relatively far apart from the secondary plug seat portion 355 to open the secondary plunger orifice 356 , it is possible to lower the decompression rate and decompress the gas to a relatively large pressure.

In addition, the user may limit the movement distance of the secondary plug 370 by adjusting the separation distance between the secondary cap 376 and the secondary plunger 351 . For example, when 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 movement distance of the secondary plug 370 . can be made relatively small. On the other hand, when the separation distance of the secondary cap 376 from the secondary plunger 351 is relatively large, the interval between the secondary plug 370 and the secondary stopper pin 380 increases, so that the secondary plug 370 becomes the secondary plug seat part. The separation distance spaced apart from (355) can be relatively large.

As such, the user can variously limit the movement distance of the secondary plug 370 by appropriately adjusting the position of the secondary cap 376 and the position of the secondary stopper pin 380 , thereby reducing the gas decompression rate. 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 is in contact with the inner surface of the secondary cap 376 . The secondary spring 385 applies an elastic force against 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 certain 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 by the secondary spring 385 to the secondary plunger 351 . 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 is Movement distance is limited relatively small. Accordingly, it is possible to limit the moving distance of the secondary plug 370 in a manner that changes 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 is relatively easily moved by the pressure of the gas flowing into the inlet 111 . In this case, it is possible to limit the movement distance of the secondary plug 370 relatively small by moving the secondary plunger 351 even for a gas having a relatively small 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 large 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 compressed gas having the same pressure is supplied, if 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 reduce the pressure of the gas supplied through this to a smaller pressure.

Meanwhile, the elastic force applied by the secondary spring 385 to the secondary plunger 351 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 increases, so that the secondary spring 385 moves the secondary plunger ( 351) increases the elastic force applied to it. 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 is the secondary plunger 351 . The elastic force applied to the Accordingly, it is also possible to limit the movement of the secondary plunger 351 in a manner that adjusts the position of the secondary cap 376 .

The secondary spring 385 has a compression spring structure interposed between the secondary plunger 351 and the secondary cap 376 as shown, in addition to the pressure of the gas pressing the secondary plunger 351 toward the secondary cap 376. It can be changed to various other structures that can apply an elastic force to the secondary plunger 351 in the direction.

3 and 11 to 13 , the emergency valve unit 400 is installed on one side of the housing 200 and may be discharged to the outside of the housing 200 through the gas of the main supply flow path 212 . That is, when the pressure of the gas flowing into the main supply flow path 212 is greater than or equal to a preset level, the emergency valve unit 400 does not block the flow of the fluid through the main supply flow path 212 . It may operate by the pressure of the fluid flowing into the main supply flow path 212 so as to flow the fluid to the emergency outlet 226 . The emergency outlet 226 is connected to the emergency outlet 228 provided between the housing 200 and the coupler 250 , and the emergency outlet 228 is connected to the main supply channel 212 .

The emergency valve unit 400 includes an emergency plug 410 movably installed in the emergency discharge path 228 and an emergency valve spring 414 resiliently supporting 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 the gas flowing into the main supply flow path 212 while surrounding the coupler 250 . The emergency valve spring 414 applies an elastic force to the emergency plug 410 in a direction to block the 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 flow path 212 is maintained below a preset size, the emergency plug 410 is activated by the elastic force of the emergency valve spring 414 , the main supply flow path 212 . ) and the state of blocking the gas flow between the emergency discharge path 228 may be maintained. At this time, the gas flowing into the main supply flow path 212 flows through the coupler flow path 252 of the coupler 250 to the connection tube 30 .

On the other hand, as shown in FIG. 13 , when the pressure of the gas flowing into the main supply flow path 212 is greater than a preset size, the emergency plug 410 is emergency due to the pressure of the gas flowing into the main supply flow path 212 . It is pushed while compressing the valve spring (414). At this time, the emergency plug 410 is spaced apart from the inner one side of the housing body 210 to connect the main supply passage 212 and the emergency discharge passage 228 . Accordingly, the gas of the main supply flow path 212 may be discharged to the outside of the housing 200 through the emergency discharge path 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 to the mask 20 through the coupler 250 . When the gas of 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 flow path 212 is reduced to a preset size or less, the emergency plug 410 is returned to its original position by the elastic force of the emergency valve spring 414 to return to the original position of the main supply flow path 212 . and the gas flow between the emergency discharge path 228 is blocked.

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

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

The alarm sound generator 510 has a body part 511 having an open end and a chamber 512 capable of accommodating gas therein, and is coupled to the body part 511 to form an open end of the body part 511 . and a covering head portion 515 . The alarm sound generator 510 may generate an alarm sound in the same manner as the operation 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 during the passage of the gas.

In addition to the configuration shown, the alarm sound generator 510 is installed to allow gas flowing into the buffer chamber 234 to pass therethrough, 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 include a seat portion 523 provided with a passage through which gas may pass in the middle portion, 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 component 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 that can move in the piston chamber 236 with its outer surface in contact with the inner surface of the housing body 210 . The piston packing 532 may be made of a material softer than the piston body 531 and may stably seal the passage of the seat portion 523 by contacting the seat portion 523 . And a piston sealing material 534 is provided on the outer surface of the piston body 531 . The piston sealing material 534 seals between the outer surface of the piston body 531 and the inner surface of the housing body 210 to prevent gas from passing through the piston chamber 236 .

The piston 530 receives a force in a direction to be in 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 flow path 230 is maintained above the operating pressure of the preset size, the piston 530 is in close contact with the seat portion 523 to prevent the seat portion 523 from moving. The passage may remain blocked. In this case, since the gas passing through the sub-supply flow path 232 cannot flow to 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 to apply a force to the piston 530 in a direction for opening the passage of the seat portion 523 . The push unit 536 includes a push block 537 that is movably disposed in the buffer chamber 234 and a push rod 540 that is movably inserted into the passage of the seat portion 523 so as to be in contact with the piston 530 . and a push spring 544 for applying an elastic force in a direction to space the piston 530 from the seat portion 523 with respect to the push rod 540 . A taper groove 538 in which the push rod 540 is partially accommodated is provided at one end of the push block 537 . The push rod 540 may be moved by 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 connecting sleeve 522 . The end of the push rod 540 has a round curved surface and is inserted into the tapered groove 538 of the push block 537 to maintain a stable contact state with the push block 537 . The push spring 544 has a compression spring structure so that one end is supported by the alarm sound generator 510 and the other end is 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 flow path 230 drops and the force pushing the piston 530 by the push unit 536 becomes greater than the force pushing the piston 530 by the gas in the bypass flow path 230, the push unit 536 ) separates the piston 530 from the seat portion 523 . At this time, the gas may flow into the buffer chamber 234 and the alarm sound generator 510 may generate an alarm sound.

In addition to the configuration shown, 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 a variety of other structures that can apply 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 storage amount of the gas stored in the storage tank 10 is reduced and the pressure of the gas discharged from the storage tank 10 becomes smaller than a preset size. The alarm sound can be generated stably by using the flow of

In the drawings, an unexplained reference numeral 600 denotes 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 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, it has been described that the pressure regulator 100 according to the present invention depressurizes the gas stored in the storage tank 10, but the pressure regulator 100 according to the present invention depressurizes various fluids other than the compressed gas. can be used to

In addition, in the drawings, the first installation chamber 216 and the second installation chamber 223 are shown to be connected to each other through the connection passage 219 and the secondary inflow passage 221 , but the first installation chamber 216 and the second installation chamber 223 are connected to each other. 2 The connection structure of the installation chamber 223 may be variously changed.

In addition, the drawings show that the alarm unit 500 of the pressure regulator 100 according to the present invention operates by receiving primary and secondary depressurized gas, but the alarm unit 500 operates by receiving the primary depressurized gas or , it may be configured to operate by directly receiving the gas supplied to the housing 200 .

In the foregoing, the present invention has been shown and described in connection with preferred embodiments for illustrating the principles of the present invention, but the present invention is not limited to the construction and operation as shown and described as such. Rather, it will be apparent to those skilled in the art that many changes and modifications can be made to the present invention without departing from the spirit and scope of the appended claims.

10: storage tank 20: mask
21: pressure control unit 30: connection tube
40: pressure gauge 100: pressure regulator
200: housing 210: housing body
211: inlet 212: main supply flow path
213: primary inflow passage 215: decompression space
216: first installation room 217: tapered groove
219: connection flow path 221: secondary inflow flow path
223: second installation room 224: tapered groove
226: emergency exit 228: emergency exit
230: bypass flow path 232: sub supply flow path
234: buffer chamber 236: piston chamber
240: coupler 242: filter
250: coupler 252: coupler euro
260: coupler 300: pressure reducing unit
310 primary decompression unit 311 primary plunger
312 primary plunger body 313 primary plunger head
314: primary plunger inflow path 315: primary plunger seat portion
316 primary plunger orifice 317 primary plunger chamber
318: primary plunger discharge path 320: tapered part
322: primary plunger groove 324: sealing material
330 primary plug 331 primary plug body
332: primary plug packing 334: plug sealing material
336: primary cap 337: primary cap thread
340: primary stopper pin 341: tip portion
343: primary spring 350: secondary pressure reducing unit
351 secondary plunger 352 secondary plunger body
353: secondary plunger head 354: secondary plunger inflow path
355: secondary plunger seat portion 356: secondary plunger orifice
357 secondary plunger chamber 358 secondary plunger discharge path
360: tapered portion 362: secondary plunger groove
364: sealing material 370: secondary plug
371: secondary plug body 372: secondary plug packing
374: plug sealing material 376: secondary cap
377: secondary cap thread 378: cap hole
379: inner thread 380: secondary stopper pin
381: tip portion 382: stopper pin threaded portion
383: stopper pin groove 385: secondary spring
387: cover 400: emergency valve unit
410: emergency plug 411: emergency plug body
412: emergency plug sealing material 414: emergency valve spring
500: alarm unit 510: alarm sound generator
511: body 512: chamber
515: head 522: connection sleeve
523: seat portion 530: piston
531: piston body 532: piston packing
534: piston sealing material 536: push unit
537: push block 538: taper groove
540: push rod 544: push spring
546 gap 600 emergency filling valve unit

Claims (9)

In the pressure regulator for supplying a compressed fluid by reducing the pressure,
a housing having an inlet through which the fluid sequentially passes, a first installation chamber, a second installation chamber, and a main supply passage;
a primary decompression unit installed in the housing to reduce the pressure of the fluid by adjusting the flow rate of the fluid flowing from the inlet to the first installation chamber; and
a secondary pressure reducing 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 of the fluid flowing into the inlet using the primary decompression unit, the secondary decompression unit is used to secondary pressure lower than the pressure of the fluid decompressed by the primary decompression unit to supply it to the main supply passage,
The primary decompression unit,
a primary plunger installed in the housing to guide the fluid at the inlet to the first installation chamber;
A primary plug installed on the primary plunger to adjust the flow rate of the fluid passing through the primary plunger in such a way that the separation distance from the primary plunger orifice inside the primary plunger is adjusted;
The secondary decompression unit is
a secondary plunger installed in the housing to guide the fluid passing through the first installation chamber to the second installation chamber;
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 the separation distance from the secondary plunger orifice inside the secondary plunger is adjusted;
The primary plug is
a primary plug body;
and a primary plug packing provided at one end of the primary plug body so as to be in contact with the primary plunger and block the primary plunger orifice, and made of a material softer than the primary plug body;
The secondary plug,
a secondary plug body;
and a secondary plug packing provided at one end of the secondary plug body to be in contact with the secondary plunger to block the secondary plunger orifice and made of a material softer than that of the secondary plug body.
delete The method of claim 1,
a primary cap coupled to the housing to cover the first installation chamber;
a primary stopper pin provided on the primary cap to protrude toward the primary plug and configured to contact the primary plug to limit a movement distance of the primary plug;
a secondary cap coupled to the housing to cover the second installation chamber; and
and a secondary stopper pin provided on the secondary cap to protrude toward the secondary plug and configured to contact the secondary plug to limit a movement distance of the secondary plug.
4. The method of claim 3,
The primary cap is screw-movably coupled to the housing so that the distance between the primary cap and the primary plug is adjustable,
The secondary cap is screw-movably coupled to the housing so that a distance between the secondary cap and the secondary plug is adjustable.
4. The method of claim 3,
The primary stopper pin is screw-movably coupled to the primary cap so that the distance between the primary stopper pin and the primary plug is adjustable.
4. The method of claim 3,
The secondary stopper pin is screw-movably coupled to the secondary cap so that the distance between the secondary stopper pin and the secondary plug is adjustable.
delete delete In the pressure regulator for supplying a compressed fluid by reducing the pressure,
a housing having an inlet through which the fluid sequentially passes, a first installation chamber, a second installation chamber, and a main supply passage;
a primary decompression unit installed in the housing to reduce the pressure of the fluid by adjusting the flow rate of the fluid flowing from the inlet to the first installation chamber; and
a secondary pressure reducing 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 of the fluid flowing into the inlet using the primary decompression unit, the secondary decompression unit is used to secondary pressure lower than the pressure of the fluid decompressed by the primary decompression unit to supply it to the main supply passage,
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 or equal to a preset 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. An emergency valve unit operated by the pressure of the fluid flowing into the main supply passage is installed,
A coupler having a coupler flow path connected to the main supply flow path is coupled to the housing to allow the fluid flowing into the main supply flow path to pass therethrough,
An emergency discharge passage connecting the main supply passage and the emergency outlet is provided between the housing and the coupler,
The emergency valve unit,
An emergency plug made 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 the 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.

Images