KR20110026743A - Decompressing valve and high pressure tank adopting the same - Google Patents

Abstract

PURPOSE: A pressure reducing valve and a high-pressure tank using the same are provided to minutely adjust the amount of discharged materials using an adjusting cap. CONSTITUTION: A pressure reducing valve comprises a body, a filling valve unit, a nozzle bar, and a pressing unit. The body has an outlet passage(18) and an outlet connected to the outlet passage. The outlet passage is separated from a main passage(P1). The filling valve unit fills a high-pressure container with materials through a filling passage(P2) and prevents the filled materials from being discharged. The nozzle bar opens and closes a nozzle hole(17). The pressing unit vertically slides the nozzle bar by pressing the nozzle bar.

Description

Decompressing valve and high pressure tank adopting the same}

The present invention relates to a pressure reducing valve and a high pressure tank employing the same, and more particularly, a pressure reducing valve and a pressure reducing valve which are installed in a high pressure filling container such as an oxygen tank to effectively fill and discharge the charged contents. It relates to a high pressure tank for filling.

A pressure reducing valve is provided at the inlet of a container filled with a high pressure gas or contents, such as an oxygen tank. The pressure reducing valve is configured to discharge the contents stored in the high pressure state in the container under reduced pressure.

However, most of the conventional pressure reducing valve is a method using a so-called screw gap, by loosening the screw coupling in a loose state to take the method of reducing the high pressure state of the contents through the gap not only requires careful attention of the user during operation, Difficult to adjust, making it difficult to reduce the contents to a fine pressure level.

In addition, the conventional pressure reducing valve is composed of one inlet for filling the contents in the container and the outlet for discharging the filled contents is not only complicated device, but also smooth filling and discharge is difficult. In view of this, there is a method of separately providing a filling valve on the bottom of the container itself instead of the valve, but this also requires effort and cost in manufacturing the container, and also has reliability.

The present invention was devised in view of the above problems, and designed a filling hole for filling the contents and a discharge opening for discharging the filled contents to increase the reliability of the filling and discharging operations, as well as having various discharge paths and decompression spaces. It is an object of the present invention to provide a pressure reducing valve and a pressure reducing valve configured to discharge and discharge the contents effectively and precisely.

It is still another object of the present invention to provide a pressure reducing valve that employs a separate packing member made of rubber or silicone material and ensures the airtight state of contents by opening and closing the outlet hole formed therein.

Still another object of the present invention is to provide a pressure reducing valve which is easy to assemble and at the same time improves operation reliability by optimizing the shape and structure of each component despite the above configuration.

An object of the present invention is to provide a high pressure tank for filling employing a pressure reducing valve of the above configuration.

In order to achieve the above object, the pressure reducing valve according to the preferred embodiment of the present invention, in the pressure reducing valve installed at the inlet of the high-pressure container, is formed in the longitudinal direction main passage (P1) which is a path for filling and discharging the contents And, filling passage (P2) formed to be connected to the main passage (P1), a decompression space (S) formed to be connected to the main passage (P1) through a nozzle hole with a partition therebetween, and the decompression space (S) A body having a discharge passage formed in a path different from the main passage (P1) and a discharge hole formed to be connected to the discharge passage; Filling valve unit for filling the contents inside the high-pressure container through the filling passage (P2) but prevents the discharge; A nozzle bar installed to open and close the nozzle hole; And pressing means for sliding the vertically by pressing the nozzle bar.

Preferably, the present invention is accommodated in the main passage (P1) of the body, the upper surface is formed with a through hole protruding through the seating portion and the upper end of the nozzle bar, the inside to receive the nozzle bar to slide up and down A lower end of the guide member having a cylindrical shaft portion formed therein; A support member having a bush for accommodating the cylindrical shaft portion of the guide member, the support member having an inlet passage connected to the inner space of the guide member; An elastic member interposed between the nozzle bar and the support member to press the nozzle bar upward; And a packing member coupled to the seating portion so as to be interposed between the partition wall of the body and the guide member, and an outlet hole having a diameter smaller than the diameter of the nozzle hole is formed at a position of the nozzle hole. An inclined surface is formed at the boundary edge of the nozzle hole, and when the nozzle bar is pressurized upward by the elastic member, a bottleneck part causes the boundary portion of the outlet hole to elastically deform inward along the inclined surface of the nozzle hole. On the other hand, the bottleneck part is spaced apart from the packing member when the nozzle bar is pressed downward by the pressing means, so that the outflow hole is opened.

Preferably, the pressing means, the pressure block is installed to slide up and down while in contact with the upper end of the nozzle bar in the decompression space (S) of the body; An adjusting cap for moving the pressing block up and down; And an O-ring interposed between the outer circumferential surface of the pressurizing block and the inner circumferential surface of the decompression space S of the body, and the corresponding threads are respectively formed on the outer circumferential surface of the decompression space S of the body and the inner circumferential surface of the adjusting cap 15. It is formed, the adjustment cap is configured to move up and down by their mutual screwing.

More preferably, the present invention is a support block which is installed to be coupled to the adjustment cap in the decompression space (S); And a spring interposed between the support block and the pressure block.

According to another aspect of the invention, the high-pressure container for filling the contents therein through the inlet and discharge the filled contents; And a pressure reducing valve having a configuration as described above, and coupled to be sealed at an inlet of the high pressure container.

According to the pressure reducing valve and the high pressure tank for filling employing the same according to the present invention, since the contents are filled through the filling opening having a path separate from the discharge opening, the filling is very simple and easy. In particular, although the filling port is provided in the pressure reducing valve, the filling time is not only short, but also the filling reliability is excellent because it is filled in a completely different path from the components for reducing the contents.

Further, according to the pressure reducing valve of the present invention, the contents filled in the high pressure vessel are firstly depressurized in the decompression space at the time of discharging, and then discharged only after the second decompression through the discharge path set to a path different from the nozzle. Therefore, the contents can be discharged under a sufficiently reduced pressure. At this time, the amount of the discharged content and the degree of decompression can be finely adjusted through the adjustment cap.

According to the present invention, the guide member and the support member form a cylindrical space in which the inner space is continuously connected, and the axis of the nozzle bar is not skewed because the nozzle bar slides up and down therein.

Further, even if the nozzle bar is slightly skewed during the vertical sliding movement, the airtightness can be further improved because the boundary portion of the outflow hole formed in the packing member of rubber or silicon is pushed into the nozzle hole and closed.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

1 is a schematic perspective view of a pressure reducing valve and a filling high pressure tank employing the pressure reducing valve according to a preferred embodiment of the present invention, and FIGS. 2 and 3 are a perspective view and a front view of the pressure reducing valve. Each is shown separately.

Referring to the drawings, the high-pressure tank for filling according to the present invention is coupled to the high-pressure container (1) for filling the contents therein through the inlet and discharge the filled contents, and sealed to the inlet of the high-pressure container (1) And a pressure reducing valve 2.

'Contents' described in the present specification and claims generally refer to gas for high-pressure filling such as oxygen, nitrogen, hydrogen, etc., but also include their liquid state. It should also be understood that in addition to these, gases or liquids of other components that need to be charged at high pressure are included.

The high pressure container (1) is designed for internal pressure so as to fill the contents at a high pressure therein, its shape and size is not limited by the present invention.

2 and 3, in which the configuration of the pressure reducing valve 2 is shown, the pressure reducing valve 2 includes a body 10 having a filling opening 11 and a discharge opening 12, and the body 10. Explosion-proof unit (13), pressure gauge (14) and adjusting cap (15) attached thereto.

4 to 6 show a more detailed configuration of the pressure reducing valve 2. 4 is an exploded view showing each component of the pressure reducing valve 2, FIG. 5 is a view showing the body 10 of the pressure reducing valve 2 cut away, and FIG. 6 is a pressure reducing valve. Some cutaway perspective views to show the state of each component in operation. In addition, an enlarged view of the inner portion of FIG. 6 is shown in FIG. 8 and will be referred to together.

Referring to the drawings together, a coupling flange 16 for coupling the pressure reducing valve 2 to the inlet of the high-pressure container 1 is formed at the lower end of the body 10, the coupling inside the body 10 The main passage P1 is formed in the longitudinal direction from the flange 16.

The main passage P1 serves as a main passage for filling or discharging the contents into the high pressure container 1.

Preferably, the outer circumferential surface of the coupling flange 16 may be threaded to be screwed with the inlet of the high-pressure container 1, but is not necessarily limited to this configuration.

Filling passage (P2) connected to the main passage (P1) is formed on the side of the body 10 in the lateral direction, the inlet of the filling passage (P2) is a filling valve unit 20 is installed to fill the contents Do it.

The filling valve unit 20 is a so-called 'one-way valve device' that can fill the inside of the high pressure container 1 with the contents through the filling passage P2, but prevents the contents from being discharged.

Specifically, the filling valve unit 20 is inserted into the inlet of the filling passage (P2), the filling socket 22, the filling hole 21 is formed, and the filling hole 21 of the filling socket 22 It includes a sealing member 23 for opening and closing the.

As shown, the inner surface of the charging socket 22 has a curvature in the hemispherical shape may be configured to accommodate the charging plug (not shown) of the external charging device, the filling hole 21 in the center portion thereof. ) Is formed.

A protrusion 24 is formed at an inner boundary surface of the filling hole 21, and the sealing hole 23 may be closed or open by contacting or spaced apart from the protrusion 24. To this end, the sealing member 23 is made of a flexible material such as rubber or silicone, and is always pressed in the direction of the protrusion 24 by the elastic block 25 made of a material such as elastic rubber. maintain.

Once the contents are filled in the high pressure container 1, the elastic block 25 may press the sealing member 23 by internal pressure, but the spring 26 may be further interposed to further improve the pressing force. .

Although the configuration of the filling valve unit 20 is described in detail in the present invention, since the technical idea of the present invention is not in the configuration of the filling valve unit itself, the present invention is not limited to this embodiment, but the contents can be filled. Valves of various configurations may be employed with a 'one-way valve' function to prevent drainage. Therefore, it is to be understood that the filling valve unit described in the claims below encompasses any valve configuration which achieves this function.

In addition, the pressure reducing valve 2 according to the present invention is provided with an explosion prevention unit 13 that can prevent the explosion by automatically discharging the contents in the case of excessive pressure above the reference value in the high-pressure container (1).

The explosion-proof unit 13 is installed at the inlet of the passage (P3) formed in the body 10 to be connected to the main passage (P1), this explosion-proof unit 13 is known in the art already known in the art Therefore, further description will be omitted.

Meanwhile, a pressure reducing space S is formed at an upper end of the body 10 with a main passage P1 and a partition wall 10a interposed therebetween, and the pressure reducing space S has a nozzle hole formed in the partition wall 10a. 17) is connected to the main passage (P1). As will be described later, the nozzle hole 17 is opened by the nozzle bar 30, so that the contents filled in the high pressure vessel 1 can flow into the reduced pressure space (S).

According to the present invention, as will be described later, the nozzle hole 17 is not closed by the nozzle bar 30 itself, but closed while the boundary of the outlet hole 36 of the packing member (35 in FIG. 4) is deformed.

To this end, as shown in FIG. 10, an inclined surface 17a is formed at the boundary edge of the nozzle hole 17, which is applied when the bottleneck 33 of the nozzle bar 30 is pressurized as will be described later. This is to allow the boundary of the outlet hole 36 of the packing member 35 to naturally elastically deform along the inclined surface 17a.

A discharge passage 18 having a different path from the main passage P1 is formed at the bottom of the decompression space S. That is, as illustrated in FIG. 6, the discharge passage 18 extends downward from the bottom of the decompression space S to be connected to the discharge port 12.

The discharge nipple 12 may be further provided with a discharge nipple 19 for easy coupling with a mechanism or device to be used.

The nozzle hole 17 is installed to move in the vertical direction while the end of the nozzle bar 30 penetrates. The nozzle bar 30 is supported by the nozzle hole 17 by a series of supports, specifically, the guide member 31 and the guide member 31 for receiving the nozzle bar 30 so as to be movable up and down. It is composed of a support member 32 coupled with.

Referring to FIG. 7, the guide member 31 is formed in a cylindrical shape to correspond to the size of the main passage P1 so as to be accommodated in the main passage P1 of the body 10, and the nozzle bar therein. The space in which 30 is accommodated is formed in the longitudinal direction.

In addition, the upper surface of the guide member 31 is formed with a through-hole 33 in communication with the internal space is configured so that the end of the nozzle bar 30 protrudes out through the through-hole (33).

The lower end of the guide member 31 is formed with a cylindrical shaft portion 31a, which is intended to be accommodated in the support member 32, as will be described later.

The upper surface of the guide member 31 is provided with a recess 34 formed concave, wherein the packing member 35 is interposed between the partition wall 10a of the body 10 and the guide member 31 is coupled. The contents filled in the high pressure vessel (1) to prevent leakage. The packing member 35 is made of a flexible material such as rubber or silicon.

Outflow hole 36 is formed at the same position as the nozzle hole 17 in the central portion of the packing member 35, and the outflow hole 36 in accordance with the vertical sliding movement of the nozzle bar 30 as will be described later The boundary of is pushed into the nozzle hole 17 is closed.

To this end, according to the present invention, the diameter of the outflow hole 36 is set to be smaller than the diameter of the nozzle hole 17.

The support member 32 is to be coupled to the lower end of the guide member 31, the center portion is formed with an inlet passage 37 connected to the internal space of the guide member 31.

The upper end of the support member 32 is formed with a bush portion 32a for accommodating the cylindrical shaft portion 31a of the guide member 31. Accordingly, by accommodating the cylindrical shaft portion 31a in the bush portion 32a, the guide member 31 may be coupled to the support member 32. By this coupling, the guide member 31 may be elongated without error. Can be. That is, since the guide member 31 and the support member 32 are integrally coupled, a stable guide is possible when the nozzle bar 30 slides as will be described later. This stable guide prevents the nozzle bar 30 from being skewed or tilted.

At the same time, an elastic member 38 such as a spring is provided between the nozzle bar 30 and the support member 32 to press the nozzle bar 30 upward, that is, in the direction of the nozzle hole 17. .

As a preferred embodiment, the inner circumferential surface of the main passage (P1) and the outer peripheral surface of the support member 32 may be formed, and then the support member 32 may be assembled by screwing the inside of the main passage (P1).

The nozzle bar 30 is accommodated in the inner space of the guide member 31 and the upper end thereof passes through the through hole 33 of the guide member 31 and the outlet hole 36 of the packing member 35 and the nozzle hole. It penetrates 17 and protrudes upwards.

In addition, the bottle bar 30a is formed in the nozzle bar 30 so as to open and close the outflow hole 36 in the vertical sliding motion.

On the other hand, in the decompression space (S) of the body 10 is provided with a pressing means for opening or closing the outlet hole 36 by pressing the upper end of the nozzle bar (30) downward.

Specifically, the pressing means is a pressure block (40) which is installed to be able to slide up and down while in contact with the upper end of the nozzle bar 30 in the decompression space (S) of the body 10, and the pressure block ( And an adjusting cap 15 for moving 40 up and down.

An O-ring 41 such as rubber or silicon is interposed between the outer circumferential surface of the pressing block 40 and the inner circumferential surface of the decompression space S of the body 10 to prevent the contents from leaking to the outside.

Corresponding threads are formed on the outer circumferential surface of the decompression space S of the body 10 and the inner circumferential surface of the adjusting cap 15, respectively, and the adjusting cap 15 is attached to the body 10 by their mutual screwing. Can be. Preferably, the stopper screw (15a) can be fastened to prevent the adjusting cap (15) from falling out when rotating more than a certain degree.

At the same time, when the adjusting cap 15 is rotated clockwise or counterclockwise by the screw coupling, the adjusting cap 15 is moved up and down, and thus the pressure block 40 interlocked with the adjusting cap 15. Since the upper and lower slides, the nozzle bar 30 which was in contact with the pressure block 40 eventually slides up and down.

Preferably, in order to more smoothly pressurization of the pressure block 40 against the nozzle bar 30 to install a support block 42 coupled to the adjusting cap 15 in the decompression space (S), A spring 43 may be interposed between the support block 42 and the pressure block 40.

More preferably, the O-ring 44 is interposed between the outer circumferential surface of the support block 42 and the inner circumferential surface of the decompression space S to prevent the contents from leaking.

According to the present invention, a pressure gauge 14 is provided so that the pressure of the contents filled in the high pressure vessel 1 can be measured in real time.

Specifically, the side of the body 10 is formed so that the pressure measuring passage (P4) is connected to the main passage (P1), the pressure gauge 14 is attached to the inlet of the pressure measuring passage (P4). Since the configuration of the pressure gauge 14 is well known in the art, detailed description thereof will be omitted.

Then, the operation of the pressure reducing valve according to the preferred embodiment of the present invention having the configuration as described above will be described.

8 shows a state in which the outlet hole 36 of the packing member 35 is closed by the nozzle bar 30 in the operation of the pressure reducing valve according to the preferred embodiment of the present invention.

The adjusting cap 15 and the support block 42 and the pressure block 40 are fully retracted so that the nozzle bar 30 is pushed upward by the elastic force of the elastic member 38 in the guide member 31. It is in a raised state.

In this state, as can be seen in FIG. 10, the bottleneck 30a of the nozzle bar 30 primarily closes the outlet hole 36 of the packing member 35 and at the same time the outlet hole 36. Push the boundary up.

Then, the boundary portion of the outflow hole 36 is elastically deformed upward and is pushed inward along the inclined surface 17a at the edge of the nozzle hole 17. Thus, the nozzle hole 17 can be completely closed.

According to the closing method of the present invention, the nozzle hole 17 can be completely closed without damaging the packing member 35 while allowing the elastic deformation of the packing member 35 to the maximum. That is, the boundary of the outflow hole 36 of the packing member 35 performs a sealing function between the two inclined surfaces, which is the inclined surface 17a formed at the bottle neck 33 of the nozzle bar 30 and the edge of the nozzle hole 17. )to be.

Since the packing member 35 is elastically deformed between two inclined surfaces, damage to the packing member can be minimized even if the packing member 35 is continuously operated. At the same time, the packing member can be pushed by the inclined surface to maximize the airtightness can be improved. If the inclined surface 17a is not formed at the edge of the nozzle hole 17, the packing member 35 will be easily damaged and will require frequent repair and maintenance.

The filling of the contents into the high pressure container 1 is performed through the filling opening 11. That is, a filling plug (not shown) connected to an external storage tank is connected to the filling socket 22 of the filling port 11 and supplies gas or liquid contents such as oxygen. Then, the filling hole 21 is opened while the sealing member 23 and the elastic block 25 retreat by the supply pressure of the filling.

Accordingly, the contents may be filled in the high pressure container 1 through the filling passage P2 and the main passage P1. The operator can check the pressure of the contents filled in the high-pressure container 1 in real time through the pressure gauge 14.

When the contents are filled to reach a predetermined reference value and then the supply of the contents is stopped, the protrusions 24 formed on the inner surface of the filling socket 22 are returned to the original position when the elastic block 25 and the sealing member 23 are returned to their original positions. The filling hole 21 is closed again while in contact with.

The high pressure container 1 filled with the contents as described above may be used in various ways depending on the user's required use. For example, when oxygen is filled in the high-pressure container 1, it may be used as an oxygen mask for patients, an oxygen mask for evacuation of subways or buildings, or an oxygen welding machine for simple welding or cutting work. Accordingly, the outlet 12 may be used to connect the respective auxiliary mechanisms to suit the intended use.

In order for the user to discharge the contents filled in the high-pressure container 1, the pressure cap 40 must be lowered by turning the adjusting cap 15. That is, when the user rotates the adjustment cap 15, the adjustment cap 15 which is screwed with the outer peripheral surface of the body 10 is rotated slowly, and then the support block 42 and pressure connected to the adjustment cap 15 Block 40 is also lowered.

Accordingly, the bottle bar 30a which is blocking the outlet hole 36 of the packing member 35 while the nozzle bar 30 in contact with the pressure block 40 and the upper end is lowered is spaced apart from the outlet hole 36. Is opened.

The contents filled in the high-pressure container 1 at the same time as the opening 36 is opened, the main passage P1, the inlet passage 37 of the support member 32 and the internal space of the guide member 31 in sequence. By flowing, it passes through the outlet hole 36 and the nozzle hole 17 to enter the decompression space (S).

In this process, while the contents flow into the decompression space S having a relatively large space, the pressure is primarily reduced in pressure. Since the decompression space S is sealed by the O-rings 41 and 44, leakage of contents does not occur.

Subsequently, the contents which have entered the decompression space S are reversed again and are discharged downward through the discharge passage 18, for example, and then discharged through the discharge port 12 connected to the discharge passage 18. do.

In this process as well, the contents are turned 180 ° to exit the discharge passage 18, and then the direction is changed once again at the discharge port 12.

The user can finely rotate the adjustment cap 15 to adjust the discharge amount and the decompression degree (discharge rate) of the contents.

When the contents are discharged and the locking cap 15 is rotated in the opposite direction again, the support block 42, the pressing block 40, and the nozzle bar 30 connected to the adjusting cap 15 are raised to their original positions. While the outlet 36 of the packing member 35 is closed again.

Although the present invention will be described in detail with reference to the following drawings, these drawings illustrate preferred embodiments of the present invention, and the technical concept of the present invention is not limited to the drawings and should not be interpreted.

1 is a schematic perspective view showing the configuration of a high pressure tank for filling employing a pressure reducing valve according to a preferred embodiment of the present invention.

2 is a schematic perspective view showing the configuration of a pressure reducing valve according to a preferred embodiment of the present invention.

3 is a schematic front view showing the configuration of a pressure reducing valve according to a preferred embodiment of the present invention.

Figure 4 is a schematic exploded perspective view showing the configuration of a pressure reducing valve according to a preferred embodiment of the present invention.

Figure 5 is a schematic partial cutaway perspective view showing the configuration of the body in the pressure reducing valve according to an embodiment of the present invention.

6 is a schematic partial cutaway perspective view showing the construction and operation of a pressure reducing valve according to a preferred embodiment of the present invention.

7 is a schematic partial cutaway perspective view showing the configuration of the nozzle bar, the guide member and the support member in the pressure reducing valve according to the preferred embodiment of the present invention.

FIG. 8 is an enlarged view of the inner part of FIG. 6 and is a schematic partial cutaway perspective view showing a state in which a nozzle hole is closed in operation of a pressure reducing valve according to an exemplary embodiment of the present invention.

9 is a schematic partial cutaway perspective view showing a state in which the nozzle hole is opened in the operation of the pressure reducing valve according to the preferred embodiment of the present invention.

10 is a schematic partial cross-sectional view showing a state in which the boundary portion of the outlet hole is elastically deformed in the operation of the pressure reducing valve according to the preferred embodiment of the present invention.

Claims (6)

In the pressure reducing valve installed at the inlet of the high pressure vessel (1), The nozzle hole 17 having a main passage P1 formed in the longitudinal direction and serving as a path for filling and discharging the contents, a filling passage P2 formed to be connected to the main passage P1, and a partition wall 10a therebetween. Decompression space (S) formed to be connected to the main passage (P1) through the discharge passage 18 is formed in a different path from the main passage (P1) in the decompression space (S), and the discharge passage (18) A body 10 having a discharge port 12 formed to be connected to the bottom surface; Filling valve unit 20 for filling the contents inside the high-pressure container (1) through the filling passage (P2) but prevents the discharge; A nozzle bar 30 installed to open and close the nozzle hole 17; And Pressure reducing means comprising a; pressure means for sliding the vertical movement by pressing the nozzle bar (30). The method of claim 1, It is received in the main passage (P1) of the body, the upper surface of the seating portion 34 and the through-hole 33 protruding through the upper end of the nozzle bar is formed, therein to accommodate the nozzle bar to slide up and down The lower end of the guide member 31 is formed with a cylindrical shaft portion (31a); A support member 32 having a bush portion 32a for accommodating the cylindrical shaft portion of the guide member, and having a drawing passage 37 connected to the inner space of the guide member; An elastic member 38 interposed between the nozzle bar and the support member to press the nozzle bar upward; And Is coupled to the seating portion 34 so as to be interposed between the partition wall (10a) of the body and the guide member, the outlet hole 36 having a diameter smaller than the diameter of the nozzle hole in the position of the nozzle hole 17 is Further comprising a packing member 35, An inclined surface 17a is formed at the boundary edge of the nozzle hole 17, When the nozzle bar is pressurized upward by the elastic member 38, the boundary portion of the outlet hole 36 is elastically moved along the inclined surface 17a of the nozzle hole 17 by the bottleneck 33. While closing the nozzle hole 17 while being deformed, And the bottleneck portion is spaced apart from the packing member when the nozzle bar is pressed downward by the pressurizing means so that the outlet hole 36 is opened. The method of claim 2, The pressing means, A pressure block 40 installed to slide up and down while being in contact with the upper end of the nozzle bar in the decompression space S of the body; Adjusting cap 15 for moving the pressure block 40 up and down; And And an O-ring 41 interposed between the outer circumferential surface of the pressing block 40 and the inner circumferential surface of the decompression space S of the body. A corresponding thread is formed on the outer circumferential surface of the decompression space S of the body and the inner circumferential surface of the adjusting cap 15, respectively, so that the adjusting cap 15 moves up and down by mutual screw coupling thereof. valve. The method of claim 3, A support block 42 installed to be coupled to the adjustment cap 15 in the decompression space S; And Pressure reducing valve further comprising; a spring (43) interposed between the support block (42) and the pressure block (40). The method of claim 2, The discharge passage (18) is a pressure reducing valve, characterized in that formed extending downward from the bottom of the pressure reducing space (S). High pressure vessel (1) for filling the contents inside the inlet and discharge the filled contents; And A high pressure tank for filling, comprising: a pressure reducing valve (2) coupled to be sealed at an inlet of the high pressure container (1) and having a configuration according to any one of claims 1 to 5.

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