KR102406047B1 - High-pressure valve - Google Patents

Abstract

The present invention relates to a vehicle-integrated battery pack structure, comprising: a bottom panel provided at the bottom of a vehicle; and a lower battery case having an upper side open and accommodating at least one battery module therein, wherein the bottom panel is the lower battery case It is possible to cover the open side of the battery, which has the effect of preventing the heat of the battery from being transferred to the interior of the vehicle.

Description

high pressure valve {HIGH-PRESSURE VALVE}

The present invention relates to a high-pressure valve, and more particularly, to a high-pressure valve that prevents damage to a valve seat or O-ring under high-pressure conditions and improves sealing performance and response performance.

A valve is a device used to control the flow of a fluid flowing in a pipe, and is mounted in the middle or end of a pipe through which the fluid flows to control the flow of the fluid.

These valves are mainly used to control the flow of fluid by being mounted on a pipe such as a mechanical device such as an automobile or a plant, and play an important role in controlling the flow of the fluid so as to supply the fluid to a desired part in a timely manner.

In order to supply an appropriate fluid to a required site, the valve device requires a fast and accurate fluid flow control function above all else. In particular, when high-explosive hazardous fluids or high-pressure fluids are transported inside the piping, it is necessary to control the flow of fluids quickly as necessary so as not to cause damage due to excessive supply or leakage of fluids. , the operational reliability of the valve device may become more important.

In this regard, referring to Patent Document 1 and Patent Document 2, a high-pressure valve (blocking valve) used to control the flow of a high-pressure fluid flowing through a pipe is proposed. This high-pressure valve 10 opens and closes the flow path formed in the valve body 20 through the interaction between the valve seat 30 and the valve stem 40, as shown in FIG. It works to control the flow.

Specifically, the high-pressure valve 10 described above is provided with an inlet 22 through which a fluid is introduced from the outside in the valve body 20 forming the body of the high-pressure valve 10 and an outlet 24 through which the fluid is discharged to the outside. A flow path 26 is formed between the inlet 22 and the outlet 24 so that the inlet 22 and the outlet 24 are in fluid communication with each other. On the other hand, the valve seat 30 and the valve stem 40 are mounted on the flow path 26 formed in the valve body 20 , and the inlet 22 and As the flow path 26 between the outlets 24 is opened and closed, the supply of the fluid is performed or blocked through the high-pressure valve 10 .

For example, when the piston 50 and the valve stem 40 connected thereto are pressed to one side by the pressure of the fluid supplied through the pressurizing hole 28 and the like, the high-pressure valve 10 moves [shown in FIG. 1 ] When the valve stem 40 moves downward in this state] The bore formed in the center of the valve seat 30 and the valve stem 40 are spaced apart from each other through the bore formed in the center of the valve seat 30 to the valve body 20 The inlet 22 and the outlet 24 formed in the communicated with each other, whereby the fluid introduced through the inlet 22 is discharged to the outside through the outlet 24, so that the fluid supply is performed through the valve, and the supply of the fluid is completed When the pressure applied from the outside is removed, the valve stem 40 is restored to its original position by the elastic force of the spring 60 mounted between the supporter 35 and the piston 50, and the valve stem 40 is moved to the valve seat. While in contact with the bore of 30, the inlet 22 and the outlet 24 formed in the valve body 20 are blocked from each other, so that the supply of the fluid through the valve is stopped.

However, in the conventional high-pressure valve 10 having this structure, in the process of repeating movement between the state in which the valve stem 40 is in contact with the valve seat 30 and the state in which it is spaced apart to open and close the flow path, high rigidity metal There is a risk that the valve stem 40 formed of a material may cause damage to the contact surface of the valve seat 30 by repeatedly applying an impact to the valve seat 30 formed of a lightweight material such as plastic, and as such, the valve seat ( When the contact surface of 30) is damaged, complete contact may not occur between the valve seat 30 and the valve stem 40, so that the flow of fluid through the valve in a closed state may not be completely blocked.

In particular, in the case of a high-pressure valve operating in an ultra-high pressure environment such as a hydrogen filling station, if the operability of the high-pressure valve is reduced due to damage to the valve stem 40, there is a risk of leading to a large accident such as an explosion. 40), there is a risk of causing a bigger problem.

Korean Patent Publication No. 10-1524634 (2015.05.26.) Korean Patent Publication No. 10-2017-0022714 (2017.03.02.)

The present invention is to solve the above problems of the conventional high-pressure valve, and improves the structure of the valve seat and the valve stem that control the flow of fluid in the high-pressure valve to prevent deterioration of the operation reliability of the high-pressure valve due to damage to the valve seat and to provide a high-pressure valve having an improved structure configured to further improve the lifespan of the high-pressure valve.

a first valve body having an inlet through which the fluid is introduced and an outlet through which the fluid is discharged; a valve seat mounted between the inlet and the outlet in the first valve body; a valve stem passing through the valve seat and opening and closing a flow path between the inlet and the outlet; a second valve body coupled to the first valve body to provide a space in which the valve stem can move; and a support coupled to the first valve body, supporting the valve seat, and passing through the valve stem.

The valve seat may include a first valve seat formed of a resin material and provided to be in contact with the valve stem; and a second valve seat formed of a metal material and provided to be in contact with the valve stem.

The first valve seat includes a first bore through which the valve stem passes, and the second valve seat includes a second bore through which the valve stem passes, and a diameter of the first bore. may be larger than a diameter of the second bore.

The valve stem may include a first stem portion penetrating the support; a second stem portion extending along the axial direction from the first stem portion and gradually increasing in diameter starting from the first stem portion; and a third stem portion extending along the axial direction from the second stem portion, having a diameter smaller than the maximum diameter of the second stem portion, and being inserted and received in the first valve body.

The first valve body may include: a guide bore for accommodating one end of the valve stem to guide the movement of the valve stem; and a guide hole for communicating the guide bore with the outside, wherein a diameter of the guide bore and a diameter of the guide hole may be greater than a diameter of the third stem part.

The high-pressure valve of the present invention includes a valve body cap provided to cover one side of the second valve body and having a pressurizing hole in the center through which a fluid can flow; and a piston coupled to the second valve body and moving the valve stem.

The piston may include a pressing surface formed toward the valve body cap, and a predetermined space may be formed between the valve body cap and the pressing surface.

The support includes a support surface formed on a plane perpendicular to the axis of the valve stem and in contact with the first valve body, and a gasket is disposed between the support surface and the first valve body in a circumferential direction. can be provided.

The support may include a first sealing groove formed on an inner circumferential surface to accommodate the sealing member, and the sealing member may be fixed to the support when the valve stem moves in a straight line.

The first valve body may further include a guide bore accommodating one end of the valve stem to guide movement of the valve stem, wherein the valve stem has a second sealing groove formed on an outer circumferential surface to receive a sealing member ; and a third sealing groove formed on the outer circumferential surface and formed parallel to the second sealing groove in the axial direction.

The high-pressure valve of the present invention may further include a piston coupled to the second valve body and moving the valve stem.

The piston may include a fourth sealing groove formed on the outer circumferential surface to accommodate the sealing member.

The high-pressure valve according to an embodiment of the present invention forms a plurality of opening/closing areas that can open and close the flow path formed between the inlet and the outlet in the valve body, so that some damage to the valve seat is caused by repeated contact between the valve seat and the valve stem. Even if it occurs, it is configured so that the opening and closing of the valve through the high-pressure valve and the supply and blocking of the fluid through it can be performed without problems, so that the operating reliability and service life of the valve can be greatly improved.

1 is a cross-sectional view of a conventional high-pressure valve.
FIG. 2 is a partially enlarged view of FIG. 1 .
3 is a perspective view illustrating a high-pressure valve according to an embodiment of the present invention.
4 is an exploded perspective view of FIG. 3 ;
5 is a cross-sectional view illustrating a high-pressure valve according to an embodiment of the present invention.
6 is a cross-sectional view illustrating a first valve body in a high-pressure valve according to an embodiment of the present invention.
7 is a cross-sectional view for explaining a second valve body in the high-pressure valve according to the embodiment of the present invention.
8 is a cross-sectional view illustrating a valve seat in a high-pressure valve according to an embodiment of the present invention.
9 is a cross-sectional view for explaining a support in a high-pressure valve according to an embodiment of the present invention.
10 is a cross-sectional view for explaining a valve stem in a high-pressure valve according to an embodiment of the present invention.
11 is a cross-sectional view illustrating a piston in a high-pressure valve according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. This is not intended to limit the present invention to specific embodiments, and should be construed to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

In describing the present invention, terms such as first, second, etc. may be used to describe various components, but the components may not be limited by the terms. The above terms are only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

The term “and/or” may include a combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but other components may exist in between. can be understood On the other hand, when an element is referred to as being “directly connected” or “directly connected” to another element, it may be understood that the other element does not exist in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression may include the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, and one or more other features It may be understood that the existence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded in advance.

Unless defined otherwise, all terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in a commonly used dictionary may be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, it is interpreted in an ideal or excessively formal meaning. it may not be

In addition, the following embodiments are provided to more completely explain to those with average knowledge in the art, and the shapes and sizes of elements in the drawings may be exaggerated for more clear explanation.

3 is a perspective view for explaining a high-pressure valve according to an embodiment of the present invention, FIG. 4 is an exploded perspective view of FIG. 3, and FIG. 5 is a cross-sectional view for explaining a high-pressure valve according to an embodiment of the present invention is disclosed, and cross-sectional views for explaining each component of the high-pressure valve according to an embodiment of the present invention are disclosed in FIGS. 6 to 11 .

3 to 11 , a high-pressure valve 1 according to an embodiment of the present invention is illustrated. The high-pressure valve 1 according to an embodiment of the present invention may be installed in a pipeline for transporting a fluid to perform a function of controlling the flow of the fluid. For example, the high-pressure valve 1 according to an embodiment of the present invention opens and closes the bore of the valve seat 200 mounted inside the valve body 100 through the valve stem 400 as shown in the drawing. It functions to control the flow of fluid through it.

According to one embodiment of the present invention, the valve body 100 is a part that forms the overall body of the high-pressure valve 1, for example, as shown in the drawing, the first valve body 110 and the second valve coupled thereto It may be composed of a body 120 .

According to an embodiment of the present invention, the first valve body 110 is a part that performs the function of the lower housing of the high-pressure valve 1 , and the inlet 130 through which the fluid flows from the outside and the inlet 130 through which the fluid is introduced into the valve on one side. An outlet 140 through which the fluid is discharged is provided, and the inlet 130 and the outlet 140 are communicated through a space formed inside the first valve body 110 to allow the fluid to flow.

Meanwhile, according to an embodiment of the present invention, the inlet 130 communicates with the internal space of the first valve body 110 through the connection hole 135 , and the outlet 140 is connected through the induction hole 145 . It may be configured to communicate with the internal space of the first valve body 110 , and the guide hole 145 reduces the flow rate and pressure of the fluid flowing out to the outlet 140 to form a smooth fluid flow. It may be desirable to form a structure inclined at an angle to the direction.

On one side of the first valve body 110 (eg, in the direction in which the second valve body 120 is located), a seat mounting unit 150 to which a valve seat 200 to be described later is mounted and a supporter mounting unit to which the supporter 300 is mounted 160 may be provided, and on the opposite side thereof (eg, in the opposite direction in which the second valve body 120 is positioned), a guide bore 170 in which a part of the valve stem 400 to be described later is accommodated may be provided. have.

Meanwhile, in the present invention, a gasket groove 165 may be formed on a surface facing the supporter mounting unit 160 in a circumferential direction. Accordingly, an annular gasket 700 may be provided in a circumferential direction between one side surface of the first valve body 110 in the axial direction and the supporter 300 .

The guide bore 170 accommodates one end of the valve stem 400 to guide the movement of the valve stem 400, and the guide bore 170 has the guide bore 170 to communicate with the outside. A guide hole 175 may be provided to discharge air inside the guide bore 170 to the outside or to introduce air into the guide bore 170 when the valve stem 400 moves. For example, in the high-pressure valve 1 shown in the figure, when the valve stem 400 moves downward and moves to an open position where the fluid can be supplied, the air filling the inside of the guide bore 170 passes through the guide hole 175 to the outside. It can be prevented from being discharged to the air compression to prevent the movement of the valve stem 400 from being disturbed, and when the valve stem 400 moves upward again and moves to a position to close the valve seat 200, the guide hole 175 External air is introduced through the guide bore 170 to fill the inside.

Meanwhile, in the present embodiment, the diameter D4 of the guide bore 170 and the diameter of the guide hole 175 may be the same. In this case, the diameter D4 of the guide bore 170 and the diameter D4 of the guide hole may be greater than the diameter R3 of the third stem part 430 to be described later (D4>R3). With this configuration, when the valve stem 400 moves, the air inside the guide bore 170 can be smoothly introduced and discharged through the guide hole 175 . Accordingly, it is possible to increase the reaction speed of the valve stem 400 to the change in hydraulic pressure.

According to an embodiment of the present invention, the second valve body 120 may be fastened to one side of the first valve body 110 to form the overall body of the high-pressure valve 1 .

The second valve body 120 may be coupled to the first valve body 110 to accommodate the valve seat 200 and the support 300 therein, and may provide a space for the valve stem 400 to move.

A body accommodating part 121 may be formed in the second valve body 120 . The body accommodating part 121 may be provided so that the first valve body 110 can be inserted and received. For example, the inner diameter of the body accommodating part 121 may be the same as or smaller than the outer diameter of one side of the first valve body 110 . With this configuration, the second valve body 120 may be configured to be coupled to the first valve body 110 through screw coupling or press-fitting.

A spring receiving part 122 may be formed in the second valve body 120 . The spring accommodating part 122 may be received through a spring 600 to be described later. For example, the inner diameter of the spring receiving part 122 may be larger than the outer diameter of the spring 600 . Also, the inner diameter of the spring accommodating part 122 may be smaller than the inner diameter of the body accommodating part 121 . With this configuration, when assembling the high-pressure valve 1 according to the present invention, the spring 600 can be easily inserted through the inner space of the body accommodating part 121 and the spring accommodating part 122, so that assembly efficiency is improved. can do it

A piston receiving part 123 may be formed in the second valve body 120 . The piston accommodating part 123 may be accommodated so that a piston 500 to be described later can move in a straight line. For example, the inner diameter of the piston receiving part 123 may be greater than the inner diameter of the spring receiving part 122 , and the inner diameter of the piston receiving part 123 may be smaller than the inner diameter of the body receiving part 121 . With this configuration, it is possible to limit the movement range of the piston 500 when the piston 500 moves in a straight line, to improve the reliability of operation, and to prevent damage due to excessive movement of the piston 500 .

A driving space 180 in which a part of the control member (eg, the piston 500 in the case of the embodiment shown in the drawings) is mounted and operated may be provided inside the piston accommodating part 123 .

Meanwhile, although not shown, an air inlet/outlet hole for discharging/introducing air into and out of the driving space 180 may be separately formed in the second valve body 120 . In this case, while the piston 500 and the valve stem 400 smoothly move within the valve body without resistance due to air compression, the opening and closing operation of the valve can be performed quickly and accurately.

Meanwhile, in this embodiment, one side of the second valve body 120 may be formed in an open shape. In this case, the diameter of the open side of the second valve body 120 may be greater than the maximum diameter of the piston (500). When assembling the high-pressure valve 1 according to the present invention with such a configuration, the piston 500 can be easily inserted into the open side of the second valve body 120 , thereby improving assembly properties.

Meanwhile, in the present embodiment, a plurality of cutting surfaces may be formed on one outer circumferential surface of the second valve body 120 . With such a configuration, since the second valve body 120 can be easily fixed in an assembly process or a repair process, workability can be improved.

Meanwhile, in the present embodiment, the valve body cap 190 may be coupled to one side (ie, one open side) of the driving space of the second valve body 120 .

The valve body cap 190 may cover one side of the second valve body 120 to prevent separation of the piston 500 .

The valve body cap 190 may include a body coupling part 191 and a cover part 192 .

The body coupling part 191 may be formed in a shape similar to a cylinder to be inserted into the open side of the second valve body 120 , and the outer diameter of the body coupling part 191 is that of the second valve body 120 . It may be the same as or larger than the inner diameter of the open side. With such a configuration, the valve body cap 190 and the second valve body 120 may be coupled through screw coupling or press-fitting, and a strong fixing force may be maintained.

The cover part 192 may be formed integrally with the body coupling part 191 , may be disposed on one side of the body coupling part 191 , and may be formed to cover one side of the second valve body 120 . For example, the cover part 192 may be formed in a polygonal plate shape. With such a configuration, since the second valve body 120 can be easily fixed in an assembly process or a repair process, workability can be improved.

A pressurizing hole 195 may be formed in the center of the valve body cap 190 , a fluid may be supplied through the pressurizing hole 195 , and a control member [eg, valve stem 400 and piston 500]. For example, in the high-pressure valve 1 according to an embodiment of the present invention, the piston 500 is pressurized by the fluid introduced into the valve through the pressurizing hole 195, and the piston 500 and the valve stem 400 connected thereto. The valve may be configured to open and close while moving.

The valve seat 200 may be mounted on the seat mounting part 150 of the valve body 100 (eg, the first valve body 110 ), and specifically, the inlet 130 and the inlet 130 in the first valve body 110 . It may be mounted between the outlets (140).

The valve seat 200 may open and close a flow path formed between the inlet 130 and the outlet 140 through interaction with the valve stem 400 to be described later. That is, the valve seat 200 is provided to be in contact with the valve stem 400 to control the flow of the fluid.

The valve seat 200 may have a substantially cylindrical structure, and a through bore through which the valve stem 400 may be inserted may be formed in the center of the valve seat 200 .

The valve seat 200 may be formed in a plurality of regions in which through bores having different diameters are formed. For example, the valve seat 200 has a size different from that of the first valve seat 210 and the first diameter D1, in which a bore portion (first bore portion 215) of a first diameter D1 is formed in the center, For example, the second valve seat 220 having a smaller diameter than the first diameter D1 and having a bore portion (the second bore portion 221 ) of the second diameter D2 may be formed.

In this case, the first valve seat 210 and the second valve seat 220 may be provided to be in contact with the valve stem 400 , respectively.

Meanwhile, the material of the first valve seat 210 and the second valve seat 220 may be different from each other. For example, the first valve seat 210 may be formed of a resin material, and the second valve seat 220 may be formed of a metal material, but is not limited thereto, and the first valve seat 210 may have sealing performance. This excellent material may be used, and the second valve seat 220 may be made of a material having excellent durability. With such a configuration, there is an effect of improving the sealing effect through the resin material and at the same time improving the service life through the metal material.

The high-pressure valve 1 according to an embodiment of the present invention has a valve seat 200 that interacts with the valve stem 400 to open and close the flow path between the inlet 130 and the outlet 140, unlike the conventional high-pressure valve. Since it is formed in a plurality of regions to have through bores of different diameters, the valve stem 400 reciprocates and even if some damage occurs to the valve seat 200 during the operation of the high-pressure valve, the The flow path can be blocked through other parts, so that the operational reliability and service life of the high-pressure valve 1 can be improved.

Meanwhile, the orifice part 223 may be formed in the second valve seat 220 . The orifice part 223 serves to guide the flow of the fluid so that the fluid introduced through the inlet 130 can stably flow toward the outlet 140, and the orifice part 223 has one or more branch holes ( 224) is provided to change the flow direction of the inflowing fluid and to reduce the flow rate and flow rate of the fluid.

A bore portion (third bore portion 222 ) having a third diameter D3 may be formed in the second valve seat 220 . For example, the third diameter D3 may be smaller than the second diameter D2.

The supporter 300 may be provided above the valve seat 200 .

The supporter 300 is coupled to the first valve body 110 , the valve seat 200 is inserted and supported, and the valve stem 400 may pass therethrough.

The supporter 300 may be formed with a seat receiving portion 310 into which one side of the second valve seat 220 may be inserted. In this case, the inner diameter of the seat receiving part 310 may be formed to correspond to the outer diameter of one side of the second valve seat 220 .

A first sealing groove 320 may be formed on the inner circumferential surface of the supporter 300 to accommodate the sealing member 800 such as an O-ring. For example, the inner diameter of the first sealing groove 320 may be smaller than the inner diameter of the seat receiving portion 310 . With this configuration, the sealing member 800 such as an O-ring may be fixed by the second valve seat 220 and the supporter 300 .

The supporter 300 is mounted on the supporter mounting part 160 formed inside the valve body, and has a through bore 330 in the center to accommodate the valve stem 400 through the through bore 330 and the valve stem 400 . It can perform a function to guide the installation and movement of For example, the inner diameter of the through bore 330 may be smaller than the inner diameter of the first sealing groove 320 .

With this configuration, in the present invention, it is possible to minimize the contact area between the outer peripheral surface of the valve stem 400 and the supporter 300 by minimizing the axial length of the through bore 330, and the outer peripheral surface of the valve stem 400 and the supporter It is possible to minimize the occurrence of damage due to the contact of 300 , and there is an effect of preventing a decrease in response speed due to friction between the outer circumferential surface of the valve stem 400 and the supporter 300 .

The supporter 300 may be configured to be provided with a spring receiving groove 340 for receiving and supporting one end of the spring 600 for positioning the valve in a closed state by applying an elastic force to the valve stem 400 at the upper portion. In this case, the spring receiving groove 340 may be formed along the circumferential direction on the disk-shaped surface disposed at one end of the supporter 300 in the axial direction. With this configuration, the spring 600 may be stably accommodated in the spring receiving groove 340 .

Meanwhile, in the present invention, the supporter 300 is formed on a plane perpendicular to the axis of the valve stem 400 , and may include a support surface 350 in contact with the first valve body 110 . In this case, the support surface 350 may be in contact with a gasket 700 to be described later.

According to an embodiment of the present invention, a control member is provided inside the high-pressure valve 1, and the flow path formed between the inlet 130 and the outlet 140 of the high-pressure valve is opened and closed by the movement of the control member to supply the fluid. This may be configured to be controlled.

According to an embodiment of the present invention, the control member interacts with the valve seat 200 to open and block the movement of the fluid and is coupled thereto to perform a function of moving the valve stem 400 . A piston 500 may be included.

Specifically, the valve stem 400 may pass through the valve seat 200 and may open and close the flow path between the inlet 130 and the outlet 140 while in contact with or separated from the valve seat 200 through linear movement.

According to an embodiment of the present invention, the valve stem 400 interacts with the first stem portion 410 and the valve seat 200 inserted and mounted in the through bore 330 formed in the center of the supporter 300 . To include a second stem part 420 for opening and closing the flow path formed inside the valve body 100, and a third stem part 430 inserted into the guide bore 170 of the first valve body 110 and mounted therein. can be configured.

The valve stem 400 may be formed to be substantially similar to a rod shape, and at least a predetermined distance region along the axial direction may be formed in a hollow shape.

The first stem portion 410 may pass through the third bore portion 222 of the second valve seat 220 and the through bore 330 of the supporter 300 . The first stem portion 410 may be formed to have a diameter R3 smaller than the diameter D3 of the third bore portion 222 of the second valve seat 220 and the through bore 330 of the supporter 300 . have.

Meanwhile, the outer peripheral surface of the first stem part 410 may be in contact with the sealing member 800 such as an O-ring accommodated in the first sealing groove 320 . That is, the sealing member 800 such as an O-ring may be in contact with the first sealing groove 320 , the outer peripheral surface of the first stem part 410 , and one end surface of the second valve seat 220 . With such a configuration, since the sealing member 800 such as the O-ring is disposed at a position where the three parts meet, it is possible to minimize a gap that may occur between the three parts, and there is an effect of improving the airtight performance.

The second stem part 420 may extend from the first stem part 410 in the axial direction, and may be formed in a shape that starts from the first stem part 410 and gradually increases in diameter.

The second stem part 420 may have a seating surface 425 whose diameter gradually increases from the first stem part 410 . Specifically, the diameter of the second stem part 420 is gradually enlarged from the diameter R3 of the first stem part 410 , and is larger than the diameter D1 of the first bore part 215 of the first valve seat 210 . It may be enlarged to a large diameter (R1).

With this configuration, the valve stem 400 may open and close the seating surface 425 by contacting the inner circumferential surface of the first bore 215 of the first valve seat 210 . In addition, when the pressure of the fluid flowing in from the inlet 130 is rapidly increased or the first valve seat 210 is damaged, the seating surface 425 of the second bore 221 of the second valve seat 220 is Opening and closing can be performed by contacting the inner circumferential surface.

Therefore, according to the present invention, even when the pressure of the fluid rises rapidly or the first valve seat 210 is damaged, the second valve seat 220 comes into contact with the valve stem 400 to block the flow of the fluid. have.

Accordingly, in the high-pressure valve 1 according to an embodiment of the present invention, the operational reliability of the high-pressure valve 1 can be improved and the service life of the high-pressure valve 1 can be further increased compared to the conventional high-pressure valve described above. there will be

The third stem part 430 may be inserted and received in the guide bore 170 formed in the first valve body 210 to guide the movement of the valve stem 400 .

In this case, the diameter R2 of the third stem part 430 may be smaller than the diameter D4 of the guide bore 170 . Meanwhile, the diameter R2 of the third stem part 430 may be smaller than the maximum diameter R1 of the second stem part 420 . With this configuration, when the fluid flows into the inlet 130 , a greater force is applied in the direction of the second stem portion 420 having a wider diameter, and the valve stem 400 connects the first valve seat 210 and the second stem portion 420 . 2 The valve seat 220 moves rapidly in the closing direction. Accordingly, according to the present invention, the maximum diameter R1 of the second stem portion 420 is larger than the diameter R2 of the third stem portion 410 to improve the response performance of the valve.

Meanwhile, the diameter R2 of the third stem part 430 may be greater than the diameter R3 of the first stem part 410 .

Meanwhile, a second sealing groove 450 and a third sealing groove 460 capable of accommodating the sealing member 800 such as an O-ring are formed on the outer peripheral surface of the third stem part 430 . In this case, the third sealing groove 460 may be formed parallel to the second sealing groove 450 along the axial direction of the valve stem 400 .

With such a configuration, a sealing member 800 such as an O-ring may be provided between the guide bore 170 and the outer circumferential surface of the third stem part 430 , and a gap between the guide hole 175 and the connection hole 135 is provided. may be confidential. In addition, according to the present invention, two sealing members 800 such as O-rings, which are frequently damaged according to the linear reciprocating movement of the valve stem 400, are sequentially arranged to form any one sealing member such as an O-ring ( Even if 800) is damaged, airtightness can be maintained, and the sealing member 800 such as two O-rings disperses the impact that was concentrated on the sealing member 800 such as an existing one O-ring, thereby preventing damage. It works.

Accordingly, in the high-pressure valve 1 according to an embodiment of the present invention, the operational reliability of the high-pressure valve 1 can be improved and the service life of the high-pressure valve 1 can be further increased compared to the conventional high-pressure valve described above. there will be

The valve stem 400 may further include a piston coupling part 440 extending from one end of the first stem part 410 and being insertedly coupled to the piston 500 .

The diameter of the piston coupling part 440 may be the same as or larger than the diameter of the stem coupling groove 510 of the piston 500 to be described later. Accordingly, the piston coupling portion 440 may be inserted into the stem coupling groove 510 to be fixedly coupled.

The valve stem 400 may have a central bore 470 extending longitudinally from one end at a central portion thereof.

The piston 500 may be coupled to the inside of the second valve body 120 , and may be coupled to the valve stem 400 to move the valve stem 400 .

The piston 500 performs a function of reciprocating the valve stem 400 connected to the piston 500 by the pressure of the fluid flowing in through the pressure hole 195 formed in the valve body and the elastic force of the spring 600 .

To this end, the piston 500 is formed to have an outer diameter of a size corresponding to the inner circumferential surface of the driving space 280 formed in the second valve body 220, and at one end, the pressure of the fluid flowing in from the pressurizing hole 195 is A pressing surface 520 to be applied is formed, and a stem insertion groove 510 into which the piston coupling part 440 is inserted and coupled may be formed at the other end.

Accordingly, the piston 500 may be coupled to the valve stem 400 to move integrally with the valve stem 400 .

On the other hand, in this embodiment, the piston coupling part 440 is inserted into the stem insertion groove 510 and has a structure to move integrally, but is not limited thereto, and the valve stem 400 and the piston 500 perform a reciprocating motion integrally. It may be formed in any various shapes and structures as long as the structure is capable of doing so. For example, the valve stem 400 may also be formed in an integrated structure with the piston 500 .

Meanwhile, in the present invention, the pressing surface 520 is formed toward the valve body cap 190 and is formed in the form of a circular groove at one end of the piston 500 in the axial direction, and has a diameter larger than the diameter of the pressing hole 195 . is formed to have

With this configuration, a predetermined space 540 in which a fluid can be accommodated may be formed between the pressing surface 520 and the valve body cap 190 . Therefore, when the fluid is introduced through the pressing hole 195, the fluid can simultaneously press the entire pressing surface 520, there is an effect of improving the response speed of opening and closing the valve.

Meanwhile, in the present embodiment, a fourth sealing groove 530 is formed on the outer peripheral surface of the piston 500 for smooth movement of the piston 500 to accommodate the sealing member 800 such as an O-ring.

A spring 600 is disposed between the piston 500 and the supporter 300 and may be configured to be mounted. As shown in the figure, the spring 600 is mounted in a compressed state between the supporter 300 and the piston 500 to press the control member (the valve stem 400 and the piston 500) in a direction to close the valve. function can be performed. Accordingly, when the air pressurized through the pressure hole 290 does not flow into the valve, the valve stem 400 contacts the valve seat and is maintained in a closed state to block the supply of fluid through the valve.

In the present invention, a gasket 700 may be provided between the support surface 350 of the support 300 and the first valve body 110 along the circumferential direction. With this configuration, even if there is a linear reciprocating motion of the valve stem 400 , no impact is applied to the gasket 700 , and damage to the gasket 700 can be prevented.

Although the present invention has been described in detail through specific examples, it is intended to describe the present invention in detail, and the present invention is not limited thereto. It is clear that the transformation or improvement is possible by the person.

All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be made clear by the appended claims.

100: valve body
110: first valve body
120: second valve body
130: inlet
140: outlet
165: gasket groove
190: valve body cap
210: first valve seat
220: second valve seat
300: supporter
320: first sealing groove
400: valve stem
425: seating surface
450: second sealing groove
460: third sealing groove
500: piston
520: pressure side
600: spring
700: gasket
800: sealing member

Claims (5)

a first valve body having an inlet through which the fluid is introduced and an outlet through which the fluid is discharged;
a valve seat mounted between the inlet and the outlet in the first valve body;
a valve stem passing through the valve seat and opening and closing a flow path between the inlet and the outlet;
a second valve body coupled to the first valve body to provide a space in which the valve stem can move; and
a support coupled to the first valve body, supporting the valve seat, and through which the valve stem passes;
including,
The valve seat is
a first valve seat formed of a resin material and provided to be in contact with the valve stem; and
a second valve seat formed of a metal material and provided to be in contact with the valve stem;
including,
The second valve seat is a high-pressure valve formed with an orifice for guiding the flow of the fluid.
According to claim 1,
The first valve seat,
a first bore through which the valve stem passes;
including,
The second valve seat,
a second bore through which the valve stem passes;
includes,
The high-pressure valve, characterized in that the diameter of the first bore is larger than the diameter of the second bore.
According to claim 1,
The valve stem is
a first stem portion penetrating the support;
a second stem portion extending along the axial direction from the first stem portion and gradually increasing in diameter starting from the first stem portion; and
a third stem portion extending along the axial direction from the second stem portion, having a diameter smaller than a maximum diameter of the second stem portion, and being inserted and received in the first valve body;
A high pressure valve comprising a.
4. The method of claim 3,
The first valve body,
a guide bore receiving one end of the valve stem to guide the movement of the valve stem; and
a guide hole communicating the guide bore and the outside;
including,
A diameter of the guide bore and a diameter of the guide hole are larger than a diameter of the third stem part.
According to claim 1,
a valve body cap provided to cover one side of the second valve body and having a pressure hole in the center through which a fluid can flow; and
a piston coupled to the second valve body and configured to move the valve stem;
further comprising,
The piston is
a pressing surface formed toward the valve body cap;
includes,
A high-pressure valve, characterized in that a predetermined space is formed between the valve body cap and the pressing surface.

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