KR101578778B1 - Concentric Circle Dual Valve type Pressure Relief Valve having Safety Function - Google Patents
Concentric Circle Dual Valve type Pressure Relief Valve having Safety Function Download PDFInfo
- Publication number
- KR101578778B1 KR101578778B1 KR1020140092393A KR20140092393A KR101578778B1 KR 101578778 B1 KR101578778 B1 KR 101578778B1 KR 1020140092393 A KR1020140092393 A KR 1020140092393A KR 20140092393 A KR20140092393 A KR 20140092393A KR 101578778 B1 KR101578778 B1 KR 101578778B1
- Authority
- KR
- South Korea
- Prior art keywords
- valve
- main valve
- sub
- overpressure
- inlet
- Prior art date
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/08—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for providing a large discharge passage
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Safety Valves (AREA)
Abstract
Description
The present invention relates to a pressure relief valve, and more particularly, to a pressure relief valve that is compact in size due to downsizing of an entire size, safe in operation at a cryogenic temperature as well as in operation stability by fail- To a pressure relief valve composed of a concentric double valve to which a function is added.
In general, the use of a pressure relief valve (PRV) is to prevent system damage from overpressure (or excessive pressure). To this end, the PRV has a valve between the inlet to which the pressure is applied and the outlet to which the pressure is discharged, and the valve is opened by the overpressure caught in the inlet, thereby ejecting the overpressure caught in the inside to the outside.
Therefore, the PRV is installed in a pressure vessel or piping where fluid movement is present, thereby preventing damage to the system from overpressure that exceeds the set point.
When such a PRV is applied to a FPS (Fuel Processing System) of a fuel cell vehicle having a high-pressure vessel and a high-pressure piping line, very strict requirements are applied to the PRV to prevent system damage.
As a strict requirement, the valve operation stability is maintained at cryogenic temperature. For this reason, the PRV for FPS is double action due to the increase in the number of valves, thereby ensuring high reliability in comparison with the general PRV with fail-safe have.
As an example of this, there is a PRV for FPS in which two valves are arranged side by side with a path between an inlet through which pressure (or pressure) is applied and an outlet through which pressure is ejected.
However, by applying two valves arranged side by side adjacent to the PRV, the FPS layout will be affected by the PRV, resulting in an increase in the external package associated with the valve with a complicated structure, and an increase in the overall size of the PRV when the FPS is applied There is no other choice.
In particular, the two valves arranged side-by-side cause an external contact area and a volume increase at the inlet of the pressurized inlet to increase the risk of freezing which deteriorates the cryogenic operating performance, The risk of system damage will also increase.
In view of the above, the present invention provides a double valve that is not concentric with the main valve and the sub-valve and does not expand the valve occupancy width, thereby achieving compactness by size downsizing, (Fail-safe) through the sub-valve in case of insufficient overpressure of the main valve or failure of the main valve, as well as the size of the external contact area and volume for sealing the passage between the main valve and the sub-valve. The present invention provides a pressure relief valve composed of a concentric double valve with a safety function that is greatly improved.
In order to achieve the above object, the present invention provides a pressure relief valve comprising a concentric double valve to which a safety function is added, comprising: a valve body having an overpressure discharge path, And a main valve and a sub-valve concentrically provided in the pressure discharge path; The main valve closing the overpressure inlet of the overpressure discharge path and being arranged in a straight line section from the overpressure inlet toward the overpressure outlet of the overpressure discharge path; Wherein the sub valve is housed in the internal space of the main valve so as to close the main valve aperture of the main valve and to be spaced apart from the overpressure outlet so as to be collinear with the overpressure inlet, And is concentric with the main valve in the internal space.
The overpressure inlet is blocked by a main valve quadring which is in close contact with the periphery of the inlet, and the main valve quadring is fitted in the main valve. The main valve aperture of the main valve is cut off by a sub-valve quadring that is tightly fitted around the through-hole, and the sub-valve quadring is fitted to the sub-valve.
Wherein the main valve includes a main valve poppet which is formed in a double concentric circle shape through which the main valve hole communicated with the sub valve is passed and blocks the over-pressure inlet, a poppet body having an internal space in which the sub valve is accommodated, A main valve spring having an elastic pressure equivalent to an operating pressure of the main valve poppet 41, and a main valve spring bolt fixed to the inner surface of the valve body. Wherein the double concentric shape of the main valve poppet comprises a first concentric circle having a diameter inserted into the overpressure inlet and a second concentric circle having a diameter close to the overpressure inlet so as to cover the overpressure inlet, Is fitted with a main valve quadring which blocks the overpressure inlet. And the main valve quadring is fitted into the recessed groove around the over-pressure inlet. The main valve spring is a cylindrical compression coil spring, and the main valve spring bolt is screwed with the valve body to support the main valve spring.
Wherein the sub-valve includes a sub-valve poppet which is formed in a double-concentric circle shape and blocks the main valve aperture, a sub-valve spring having an elastic pressure corresponding to an operating pressure of the sub-valve poppet, And a sub valve spring bolt integrally formed with the main valve poppet and fixed to the inner surface of the poppet body accommodating the sub valve. Wherein the double concentric circle shape of the sub valve poppet comprises a first concentric circle having a diameter inserted into the main valve through hole and a second concentric circle having a diameter close to the main valve through hole so as to cover the main valve through hole, A sub valve quadring for blocking the main valve aperture is fitted. And the sub valve quadring is fitted into the recessed groove around the main valve through-hole. The sub valve spring is a cylindrical compression coil spring, and the sub valve spring bolt is screwed with the poppet body to support the sub valve spring.
The valve body includes an inlet manifold forming the overpressure inlet and an outlet cover forming the overpressure outlet, and the outlet cover is engaged with the inlet manifold on the opposite side of the overpressure inlet. The inlet manifold includes a manifold body having a hollow cylindrical shape in which the main valve and the sub-valve are housed, an inlet nipple forming the over-pressure inlet, and a manifold body outlet through which the introduced over- A connecting flange for forming a connecting flange; Wherein the outlet cover comprises a cover body coupled to the connecting flange, an insert boss protruding from the cover body to be inserted into the manifold body, and an outlet nipple protruding from the cover body to be exposed to the outside, The through bore of the insert boss and the outlet nipple penetrates the overpressure outlet.
A stepped groove is formed around the overpressure inlet of the inlet nipple and the main valve quadring sandwiched between the main valve and the inlet is in close contact with the groove.
An O-ring is provided at a joint portion of the inlet manifold and the outlet cover, and the O-ring is inserted into a groove that is concentrically formed in the connecting flange.
The present invention is suitable as a PRV (Pressure Relief Valve) for a FPS (Fuel Processing System) that requires strict performance conditions because the main valve and the sub valve for solving overpressure act as double valves. The FPS layout can be installed without any influence on the FPS layout since the FPS is compacted by size downsizing in a coaxial-in-series arrangement.
In the present invention, since the main valve and the sub valve constitute a double valve, the failure of the main valve and the fail-safe after the main valve is opened and the pressure is stable, the general PRV High contrast can be secured.
In addition, the present invention can greatly improve the operational stability under extreme low temperature, which brings about freezing by increasing the operating stability by reducing the outer contact area and the volume size of the sub valve compared to the main valve.
FIG. 1 is a sectional view of a pressure relief valve constituted by a concentric double valve to which a safety function according to the present invention is added, FIG. 2 is a sectional view of a pressure relief valve composed of a concentric double valve to which a safety function according to the present invention is added, FIG. 3 is a diagram illustrating a state in which overpressure is relieved by normal operation of the main valve according to the present invention. FIG. Pressure relief state due to the fail-safe operation of the compressor.
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which illustrate exemplary embodiments of the present invention. The present invention is not limited to these embodiments.
1 shows a sectional configuration of a pressure relief valve (PRV) to which a safety function according to the present embodiment is added.
As shown, the PRV includes an
Specifically, the
Specifically, the
Specifically, the O-
More specifically, the
Specifically, the
2 shows an exploded configuration of the
The
The main valve poppet 41 forms a main valve through hole having a double concentric circle shape and a double concentric circle shape with a different diameter. For example, the biconcave concentric shape is composed of a first concentric circle having a diameter inserted into the through hole of the
The main
The
The main
The
The
The sub
The
The sub
On the other hand, Fig. 3 shows the overpressure relieved state by the normal operation of the
As shown in the figure, when the overpressure is formed in the high-pressure vessel or the high-pressure piping line (for example, the FPS (Fuel Processing System) of the fuel cell vehicle) in which the PRV is installed, the
The overpressure pushes the
The operation of the
Then, the overpressure is introduced into the through hole of the
By the operation of the PRV, the overpressure formed in the high-pressure vessel or the high-pressure piping line is lowered to the set value again, thereby preventing the system damage by the high-pressure vessel or the high-pressure piping line.
4 shows the overpressure relieved state by the operation of the sub-valve 50, which means a fail-safe spherical shape by the sub-valve 50. In FIG. In this state, an overpressure equal to or higher than a set value is formed in the high-pressure vessel or the high-pressure piping line (for example, FPS (Fuel Processing System) of the fuel cell vehicle) Means that the
The overpressure is introduced into the main valve through hole of the
The overpressure pushes the
The operation of the sub-valve 50 as described above means formation of an overpressure discharge passage for the external discharge of overpressure. Therefore, the overpressure is introduced into the internal space of the poppet body 41-1 through the gap formed between the
Then, the overpressure is introduced into the through hole of the
By the operation of the PRV, the overpressure formed in the high-pressure vessel or the high-pressure piping line is lowered to the set value again, thereby preventing the system damage by the high-pressure vessel or the high-pressure piping line.
As described above, the pressure relief valve composed of the concentric double valve to which the safety function according to the present embodiment is added is directed toward the outlet of the
10: inlet manifold 11: manifold body
13: inlet nipple 15: connecting flange
20: Outlet cover 21: Cover body
23: insert boss 25: outlet nipple
30: O-ring 40: Main valve
41: main valve poppet 41-1: poppet body
43: main valve quadring 45: main valve spring
47: Main valve spring bolt
50: Sub-valve 51: Sub-valve Poppet
51-1: Poppet rod 53: Subvalve quadring
55: Sub valve spring 57: Sub valve spring bolt
Claims (15)
The main valve closing the overpressure inlet of the overpressure discharge path and being arranged in a straight section toward the overpressure outlet of the overpressure discharge path at the overpressure inlet;
Wherein the sub valve is housed in the internal space of the main valve so as to close the main valve aperture of the main valve and to be spaced apart from the overpressure outlet so as to be collinear with the overpressure inlet, Concentric with the main valve in the internal space;
Wherein the main valve aperture of the main valve is blocked by a sub-valve quadring that is closely attached around the aperture, and the sub-
Pressure relief valve consisting of a concentric double valve with added safety function.
Wherein the outlet cover comprises a cover body coupled to the connecting flange, an insert boss protruding from the cover body to be inserted into the manifold body, and an outlet nipple protruding from the cover body to be exposed to the outside, Wherein the insert boss and the outlet nipple are formed with concentric double valves to which a safety function is added.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140092393A KR101578778B1 (en) | 2014-07-22 | 2014-07-22 | Concentric Circle Dual Valve type Pressure Relief Valve having Safety Function |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140092393A KR101578778B1 (en) | 2014-07-22 | 2014-07-22 | Concentric Circle Dual Valve type Pressure Relief Valve having Safety Function |
Publications (1)
Publication Number | Publication Date |
---|---|
KR101578778B1 true KR101578778B1 (en) | 2015-12-18 |
Family
ID=55081412
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020140092393A KR101578778B1 (en) | 2014-07-22 | 2014-07-22 | Concentric Circle Dual Valve type Pressure Relief Valve having Safety Function |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR101578778B1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108167486A (en) * | 2017-12-27 | 2018-06-15 | 应鸿 | The hot water water supply installation saved water and energy |
US10403912B2 (en) | 2016-04-26 | 2019-09-03 | Hyundai Motor Company | Anode discharge valve for fuel cell system |
KR20220075006A (en) | 2020-11-26 | 2022-06-07 | 팍스텍(주) | Proportional Pressure setting Relief Valve |
CN114645959A (en) * | 2021-11-24 | 2022-06-21 | 厦门劲博汇科技有限公司 | Automobile, automobile seat, massager and rapid pressure relief device |
KR102521583B1 (en) * | 2021-12-16 | 2023-04-13 | 한국자동차연구원 | Double Check Valve |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008176693A (en) | 2007-01-22 | 2008-07-31 | Neriki:Kk | Pressure reducing valve |
JP2014055619A (en) | 2012-09-11 | 2014-03-27 | Yamada Seisakusho Co Ltd | Relief valve device |
-
2014
- 2014-07-22 KR KR1020140092393A patent/KR101578778B1/en active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008176693A (en) | 2007-01-22 | 2008-07-31 | Neriki:Kk | Pressure reducing valve |
JP2014055619A (en) | 2012-09-11 | 2014-03-27 | Yamada Seisakusho Co Ltd | Relief valve device |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10403912B2 (en) | 2016-04-26 | 2019-09-03 | Hyundai Motor Company | Anode discharge valve for fuel cell system |
CN108167486A (en) * | 2017-12-27 | 2018-06-15 | 应鸿 | The hot water water supply installation saved water and energy |
KR20220075006A (en) | 2020-11-26 | 2022-06-07 | 팍스텍(주) | Proportional Pressure setting Relief Valve |
CN114645959A (en) * | 2021-11-24 | 2022-06-21 | 厦门劲博汇科技有限公司 | Automobile, automobile seat, massager and rapid pressure relief device |
WO2023093264A1 (en) * | 2021-11-24 | 2023-06-01 | 王翠玲 | Automobile, automobile seat, massager, and rapid pressure relief apparatus |
CN114645959B (en) * | 2021-11-24 | 2024-03-22 | 厦门劲博汇科技有限公司 | Automobile, automobile seat, massager and quick pressure relief device |
KR102521583B1 (en) * | 2021-12-16 | 2023-04-13 | 한국자동차연구원 | Double Check Valve |
WO2023113268A1 (en) * | 2021-12-16 | 2023-06-22 | 한국자동차연구원 | Double check valve |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR101578778B1 (en) | Concentric Circle Dual Valve type Pressure Relief Valve having Safety Function | |
US7690622B2 (en) | Diaphragm-type electromagnetic valve with closing-force strengthening mechanism | |
JPH1194197A (en) | Valve device for gas cylinder and pressure reducing valve thereof | |
JP2020523523A (en) | Compact gas cylinder valve with residual pressure function | |
US11603941B2 (en) | Relief valve | |
WO2016194146A1 (en) | Container valve | |
KR20140017600A (en) | Bonnet apparatus for use with fluid regulators | |
US20140238508A1 (en) | Pressure reducing valve, tap and bottle provided with such a pressure reducing valve | |
JP6301191B2 (en) | Pressure reducing valve | |
JP6448127B2 (en) | Safety valve mechanism, pressure regulator | |
US2764997A (en) | Accumulators | |
US9506573B2 (en) | Hydraulic valve for preventing leakage in an actuator for activating a high- or medium-voltage circuit breaker | |
US8931754B2 (en) | Safety valve and electromagnetic valve | |
US10261526B2 (en) | Pressure reducing valve | |
US4415001A (en) | Pressure rise rate limiter valve | |
ES2653448T3 (en) | Spring controlled valve | |
US7234487B2 (en) | Cross-over relief valve assembly for use in bi-directional circuit | |
CN108291654A (en) | Valve | |
US2686533A (en) | Diaphragm type safety valve | |
WO2019163879A1 (en) | Pressure reducing valve | |
JP4801375B2 (en) | Air operated valve | |
JP6966961B2 (en) | Control valve | |
US2689581A (en) | High-pressure safety relief valve | |
JP2018028335A (en) | Valve device | |
KR101108939B1 (en) | Pressure reducing apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20181204 Year of fee payment: 4 |
|
FPAY | Annual fee payment |
Payment date: 20191121 Year of fee payment: 5 |