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WO2023054814A1 - Soupape de sécurité à fonction d'amortissement - Google Patents

Soupape de sécurité à fonction d'amortissement Download PDF

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Publication number
WO2023054814A1
WO2023054814A1 PCT/KR2021/019039 KR2021019039W WO2023054814A1 WO 2023054814 A1 WO2023054814 A1 WO 2023054814A1 KR 2021019039 W KR2021019039 W KR 2021019039W WO 2023054814 A1 WO2023054814 A1 WO 2023054814A1
Authority
WO
WIPO (PCT)
Prior art keywords
lower plate
safety valve
air
chamber space
spindle
Prior art date
Application number
PCT/KR2021/019039
Other languages
English (en)
Korean (ko)
Inventor
김동열
김영민
이민구
Original Assignee
(주) 케이투앤
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주) 케이투앤 filed Critical (주) 케이투앤
Priority to CN202180029365.5A priority Critical patent/CN116209849A/zh
Publication of WO2023054814A1 publication Critical patent/WO2023054814A1/fr

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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
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
    • 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
    • F16K47/00—Means in valves for absorbing fluid energy

Definitions

  • the present invention relates to a safety valve having a damping function, and more particularly, when the lower plate of the compression part is lowered, the lowering speed is reduced by the damper part, thereby reducing the degree of impact of the disk against the seat. It relates to a safety valve capable of preventing damage and minimizing cost by having a structure capable of mounting a damper unit and a compression plate to a conventional body unit.
  • the safety valve for example, when the pressure inside the tank or pipeline rises, opens at a predetermined set pressure to discharge steam or gas to the outside to prevent damage or explosion of the tank or pipeline due to high pressure. It's a valve that works.
  • safety valves may be classified into direct-actuated, pilot-actuated, spring-actuated, and the like depending on their shape or use.
  • the spring-actuated safety valve is mainly used when a relatively high set pressure is required, and has a structure in which the set pressure is implemented using a spring mounted inside the valve.
  • Conventional safety valves generally have a configuration in which fluid flows into the seat through an inlet nozzle provided on the body of the valve, and at this time, when the pressure of the fluid is higher than the set pressure, the disk is instantly lifted and the fluid is discharged through the discharge port. .
  • a safety valve having a damping function capable of minimizing cost by having a structure capable of mounting a damper unit and a compression plate is provided.
  • a disk to which a spindle is axially coupled is provided inside, and when fluid flows in through a seat and reaches a set pressure, the disk rises and the fluid flows through the outlet.
  • a compression part including a lower plate mounted on the lower plate and the flange, and the inner space is formed as a chamber space with air, so that when the lower plate is lowered, the lower plate is lowered by resistance of the air existing in the chamber space. It may include a damper unit for reducing the descending speed of.
  • an inner wall of the body part on one side of the flange may be provided with a stepped groove formed stepwise in a wall thickness direction, and a side portion of the damper unit may be fitted into the stepped groove.
  • At least one air hole is formed in the lower plate according to an embodiment of the present invention, so that when the lower plate is inserted into the chamber space of the damper unit, air in the chamber space escapes through the air hole.
  • At least a portion of the air hole facing the spring may be formed in a funnel shape so that air is moved to the chamber space through the air hole when the lower plate rises from the chamber space of the damper unit.
  • At least a portion of the air hole according to an embodiment of the present invention may be formed with a groove in a spiral direction for increasing the moving speed of the air.
  • the lower plate includes a spring insertion portion inserted into one end of the spring, a circular plate portion integrally provided with the spring insertion portion and inserted into the chamber space of the damper unit, and It may include a plurality of air holes regularly arranged at equal angles in the spring insertion part and the plate part.
  • the maximum outer diameter of the plate part according to the embodiment of the present invention may be equal to or smaller than the maximum inner diameter of the sidewall of the damper part forming the chamber space.
  • the outer side of the lower end of the plate portion may be formed as an inclined surface
  • the inner side of the upper end of the sidewall of the damper unit may be formed as an inclined surface
  • an inclination angle of an inclined surface of the plate portion may be equal to or greater than an inclined angle of an inclined surface of the sidewall of the damper unit.
  • the flange according to an embodiment of the present invention is formed in an inward direction from one surface on which the lower plate is seated to reduce the sound pressure generated when the lower plate is raised and lowered with respect to the damper unit.
  • a sound pressure reducing groove may be provided. there is.
  • the safety valve according to an embodiment of the present invention is provided stepwise on the inner wall of the body part where the compression part is disposed, and contracts the bellows mounted on the spindle at the lower part of the flange by limiting the rise of the lower plate.
  • a stopper for limiting the degree may be further included.
  • the lowering speed is reduced by the damper unit, thereby reducing the degree of impact of the disc on the seat, thereby preventing damage to parts, and also preventing damage to parts. Costs can be minimized by having a structure capable of mounting the damper unit and the compression plate to the unit.
  • FIG. 1 is a diagram showing the internal configuration of a safety valve having a damping function according to an embodiment of the present invention.
  • FIG. 2 is a partially enlarged view of FIG. 1 .
  • FIG. 3 is a view showing a state in which the lower plate of the compression unit in FIG. 2 is lowered into the damper unit.
  • FIG. 4 is the diagrams shown in FIGS. 2 and 3 for explaining the movement of air when the lower plate moves with respect to the damper unit.
  • FIG. 5 is a view showing that a hydraulic pressure reducing groove is provided in a safety valve according to another embodiment of the present invention.
  • FIG. 6 is a view showing that a stopper is provided in a safety valve according to another embodiment of the present invention.
  • FIG. 1 is a view showing the internal configuration of a safety valve having a damping function according to an embodiment of the present invention
  • FIG. 2 is a partially enlarged view of FIG. 1
  • FIG. 3 is a lower plate of the compression unit in FIG. 2
  • a damper 4 is a view illustrating the movement of air when the lower plate moves with respect to the damper unit as shown in FIGS. 2 and 3 .
  • the safety valve 100 having a damping function is mounted, for example, in a tank or pipeline, and when the internal pressure rises above the set pressure, temporarily As a valve that is opened to discharge fluid to the outside, the body portion 110 forming a basic frame, the compression portion 130 provided on the upper side of the flange 115 provided in the body portion 110, and the flange 115 ) It may include a damper unit 150 provided on the compression unit 130 and interacting with the lower plate 140 provided to reduce the lowering speed of the lower plate 140 .
  • the body part 110 of this embodiment forms a basic appearance, and includes a lower body 111 in which an inlet 112 through which fluid flows is formed, and An upper body 117 to which the compression part 130 to be performed is mounted so as to be able to move up and down, a flange 115 connecting the lower body 111 and the upper body 117, and an inlet provided in the lateral direction from the lower body 111 An outlet 114 for discharging the fluid introduced through 112 may be included.
  • a seat 113 is provided in communication with the inlet 112 and through which the fluid introduced into the inlet 112 passes, and a disk 120 that opens and closes the seat 113 at the top of the seat 113. ) is provided to be able to move up and down, such a disk 120 is provided at the bottom of the compression unit 130 to be described later, and can close or open the seat 113 while moving up and down with the movement of the compression unit 130.
  • the disk 120 With respect to the seat 113, the disk 120 basically maintains a closed state. For example, when the internal pressure in the body 110 exceeds a set pressure, the disk 120 opens with respect to the seat 113, and the internal pressure When the pressure is less than this set pressure, the disc 120 descends to the seat 113 and closes.
  • a damper unit 150 capable of reducing the descending speed of the disk 120 is provided.
  • the disc Prior to explaining the damper unit 150, the disc The configuration of the compression unit 130 that operates 120 will be described.
  • the compression unit 130 of this embodiment includes a spindle 131 having one end mounted on the disk 120 and a spring 133 coupled to the spindle 131 so as to surround the spindle 131 in the upper body 117. And, a lower plate 140 mounted on the lower end of the spring 133 facing the flange 115, an upper plate 135 mounted on the upper end of the spring 133, and a spindle 131 in the lower body 111 ) may include a bellows 134 mounted to surround it.
  • an adjustment screw 138 is mounted on the upper end of the upper body 117, and the spindle 131 is disposed to pass through the screw 138, so that the spindle 131 moves up and down when the spindle 131 moves up and down. (131) can be precisely maintained.
  • an adjusting screw 138 surrounds the spindle 131 so as to be movable up and down, and a spring 133 surrounds the spindle 131 at the bottom thereof, and an upper plate mounted on top of the spring 133. Since the 135 and the adjustment screw 138 are connected by the bearing 136 structure, the spindle 131 can move up and down smoothly and accurately with respect to the adjustment screw 138 .
  • the lower end of the spindle 131 is wrapped with a bellows 134, which is compressed when the spindle 131 is raised by the compression of the spring 133, and then When the spindle 131 returns to its original state, the bellows 134 may also return to its original state.
  • the compression unit 130 enables the disc 120 to move up and down relative to the seat 113 according to the set pressure. It is possible to reduce the descending speed of the part and thus prevent the occurrence of component damage.
  • the damper unit 150 of this embodiment is provided on the upper surface of the flange 115, and is generally provided in a cylindrical shape or a circular ring shape with a short top and bottom, and its internal space is air It is formed as a chamber space (150S) in the.
  • the lower plate 140 of the above-described compression unit 130 when the lower plate 140 of the above-described compression unit 130 is raised and then lowered again, the lower plate 140 may be lowered by resistance of air existing in the chamber space 150S, thereby reducing the lower plate 140. , thereby reducing the size of the impact of the disk 120 to the seat 113.
  • the damper part 150 may be coupled to a stepped groove 118 formed stepwise on the inner wall of the lower end of the upper body 117 of the body part 110 on the upper side of the flange 115.
  • a stepped groove 118 corresponding to the shape of the side of the damper part 150 may be formed on the inner wall of the upper body 117, and the damper part 150 is fitted into the stepped groove 118, thereby The damper unit 150 may maintain a firm position.
  • the upper body 117 may have the standard of a conventional safety valve, and since the damper unit 150 can be mounted by forming the stepped groove 118 on the inner surface of the upper body 117, the cost required for equipment construction is reduced. Cost or labor can be reduced.
  • the lower plate 140 when a pressure higher than the set pressure is generated, the lower plate 140 is raised from the damper unit 150 and lowered when the set pressure is lowered.
  • the outer shape of the lower plate 140 and the damper unit The shape of the chamber space 150S of 150 has a corresponding shape.
  • the lower plate 140 of this embodiment is provided integrally with the spring insertion portion 141 inserted into the lower end of the spring 133 and the spring insertion portion 141, A circular plate portion 143 inserted into the chamber space 150S of the damper unit 150 may be included.
  • a plurality of air holes 145 are formed at regular angles in the lower plate 140 to allow air in the chamber space 150S to escape to the outside or conversely to allow air to enter the chamber space 150S again.
  • the maximum outer diameter of the plate portion 143 may be equal to or smaller than the maximum inner diameter of the sidewall 151 of the damper unit 150 forming the chamber space 150S, and thus the chamber space ( 150S) can be smoothly lowered or raised by the lower plate 140 .
  • the air in the chamber space 150S moves through the plurality of air holes 145 formed in the lower plate 140.
  • the air acts as a resistive force on the lower plate 140 and acts as a damper when the lower plate 140 is lowered to the damper unit 150, and escapes through the air hole 145, thereby reducing the chamber space 150S ) so that the lower plate 140 can be inserted.
  • the lower plate 140 when a pressure higher than the set pressure is generated, the lower plate 140 is raised from the chamber space 150S. At this time, the air above the lower plate 140 passes through the air hole 145 again. By being moved to the chamber space 150S through this, the chamber space 150S may maintain a state in which there is air.
  • the air hole 145 may have a funnel shape as a whole, as shown in FIG. 2 , and due to the shape of the air hole 145, air may be smoothly moved.
  • a spiral groove may be formed in at least a portion of the air hole 145, for example, in a funnel portion whose width decreases toward the bottom, through which the air movement speed may be increased.
  • the outer side of the lower end of the plate part 143 is formed as an inclined surface 143a, and the upper inner side of the side wall 151 of the damper unit 150 is inclined surface 151a ) can be formed.
  • the inclination angle ( ⁇ P) of the inclined surface 143a of the plate portion 143 may be equal to or greater than the inclination angle ( ⁇ D) of the inclined surface 151a of the sidewall 151 of the damper unit 150 . Therefore, when the lower plate 140 is lowered and inserted into the damper unit 150, the position of the lower plate 140 relative to the damper unit 150 is easily adjusted, thereby reducing the lower plate 140 relative to the damper unit 150. ) to avoid shaking.
  • the damper unit 150 When the lower plate 140 is lowered with respect to ), the inclined surface 143a of the lower plate 140 slides down with respect to the inclined surface 151a of the damper part 150, so that the lower plate 140 relative to the damper part 150 ) can be accurately aligned.
  • the safety valve 100 of this embodiment may include a leak prevention unit 165 provided between the flange 115 and the lower body 111 to prevent leakage of fluid. .
  • a pressure ring 160 for maintaining pressure may be provided between the flange 115 and the lower body 111, and a leak prevention unit between the bellows 134 and the flange 115 at the lower portion thereof. 165 may be provided, and the leakage preventing part 165 may prevent fluid flowing through the seat 113 from leaking to the flange 115 or the upper body 117 or to the outside.
  • the bellows 134 contracts or expands when the compression unit 130 of the present embodiment operates, and it is possible to prevent fluid from flowing into the spindle 131 or the like inside through the bellows 134, and thus the part This can prevent corrosion.
  • the damper unit 150 when the lower plate 140 of the compression unit 130 is lowered, the lowering speed is reduced by the damper unit 150, so that the disk 120 relative to the seat 113 Damage to parts can be prevented by reducing the degree of impact generation, and costs can be minimized by having a structure in which the damper unit 150 and the compression plate can be mounted on the conventional body unit 110.
  • FIG. 5 is a view showing that a hydraulic pressure reducing groove is provided in a safety valve according to another embodiment of the present invention.
  • the flange 215 of the safety valve 200 of the present embodiment is recessed from the upper surface in the inward direction to reduce the sound pressure generated when the lower plate 240 is raised and lowered with respect to the damper unit 250.
  • a reduction groove 215h may be provided.
  • the negative pressure reducing groove 215h may be a cylindrical groove as a whole.
  • the air pressure A negative pressure may be generated when the valve 200 is opened.
  • the negative pressure reducing groove 215h is provided as in the present embodiment, since there is air in the negative pressure reducing groove 215h, the generation of negative pressure can be reduced, and thus the valve 200 can be opened and closed more smoothly. .
  • FIG. 6 is a view showing that a stopper is provided in a safety valve according to another embodiment of the present invention.
  • the safety valve 300 of this embodiment is provided stepwise on the inner wall of the upper body 317 of the body portion 310 and restricts the rise of the lower plate 340 to the lower portion of the flange 315.
  • the stopper 370 can prevent compression of the bellows 334 by limiting the rise of the lower plate 340, thereby preventing deformation and breakage of the bellows 334 as well as preventing fluid leakage. Therefore, it is possible to prevent additional risks due to part damage or extraction.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)

Abstract

L'invention concerne une soupape de sécurité ayant une fonction d'amortissement selon un mode de réalisation de la présente invention comprenant : une partie de corps comprenant un disque, auquel une broche est couplée axialement, prévue dans celle-ci de sorte que, lorsqu'un fluide s'écoule dans la partie de corps à travers une feuille et atteint une pression de consigne, le disque se déplace vers le haut et le fluide est déchargé à travers une sortie ; un compresseur qui est couplé à la broche d'un côté d'une bride prévue sur la partie de corps de façon à entourer la broche, et qui comprend un ressort comprimé lorsque la broche se déplace vers le haut avec le disque et une plaque inférieure fixée à une partie d'extrémité du ressort faisant face à la bride ; et une partie amortisseur qui est prévue sur la bride et comporte un espace intérieur formé comme un espace de chambre avec de l'air de sorte que la vitesse de descente de la plaque inférieure est diminuée par la résistance de l'air dans l'espace de chambre lorsque la plaque inférieure descend.
PCT/KR2021/019039 2021-09-30 2021-12-15 Soupape de sécurité à fonction d'amortissement WO2023054814A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202180029365.5A CN116209849A (zh) 2021-09-30 2021-12-15 具备阻尼功能的安全阀

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2021-0129785 2021-09-30
KR1020210129785A KR102373717B1 (ko) 2021-09-30 2021-09-30 댐핑 기능을 구비한 안전 밸브

Publications (1)

Publication Number Publication Date
WO2023054814A1 true WO2023054814A1 (fr) 2023-04-06

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Family Applications (1)

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PCT/KR2021/019039 WO2023054814A1 (fr) 2021-09-30 2021-12-15 Soupape de sécurité à fonction d'amortissement

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Country Link
KR (2) KR102373717B1 (fr)
CN (1) CN116209849A (fr)
TW (1) TWI836632B (fr)
WO (1) WO2023054814A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102556147B1 (ko) * 2022-10-31 2023-07-19 (주) 케이투앤 안전 밸브
US20250198540A1 (en) * 2023-12-18 2025-06-19 Baker Hughes Oilfield Operations Llc Pneumatic actuator dampener system and method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0932942A (ja) * 1995-07-18 1997-02-07 F M Valve Seisakusho:Kk 逆止弁装置
KR19990023054U (ko) * 1997-12-02 1999-07-05 이구택 스윙체크 밸브용 디스크 완충장치
US20020027211A1 (en) * 2000-09-07 2002-03-07 Smc Corporation Smooth exhaust valve
KR20040049073A (ko) * 2002-12-03 2004-06-11 유재관 절수기구
KR20080044167A (ko) * 2006-11-15 2008-05-20 씨케이디 가부시키 가이샤 진공밸브

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0932942A (ja) * 1995-07-18 1997-02-07 F M Valve Seisakusho:Kk 逆止弁装置
KR19990023054U (ko) * 1997-12-02 1999-07-05 이구택 스윙체크 밸브용 디스크 완충장치
US20020027211A1 (en) * 2000-09-07 2002-03-07 Smc Corporation Smooth exhaust valve
KR20040049073A (ko) * 2002-12-03 2004-06-11 유재관 절수기구
KR20080044167A (ko) * 2006-11-15 2008-05-20 씨케이디 가부시키 가이샤 진공밸브

Also Published As

Publication number Publication date
CN116209849A (zh) 2023-06-02
KR102373717B1 (ko) 2022-03-14
TW202332851A (zh) 2023-08-16
TWI836632B (zh) 2024-03-21
KR102466778B1 (ko) 2022-11-14

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