WO2022217757A1 - Soupape - Google Patents

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Publication number
WO2022217757A1
WO2022217757A1 PCT/CN2021/103573 CN2021103573W WO2022217757A1 WO 2022217757 A1 WO2022217757 A1 WO 2022217757A1 CN 2021103573 W CN2021103573 W CN 2021103573W WO 2022217757 A1 WO2022217757 A1 WO 2022217757A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
valve body
sealing member
inner core
sealing
Prior art date
Application number
PCT/CN2021/103573
Other languages
English (en)
Chinese (zh)
Inventor
吴京祥
Original Assignee
多立恒（北京）能源技术股份公司
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
Priority claimed from CN202110411409.2A external-priority patent/CN112923068A/zh
Priority claimed from CN202120790140.9U external-priority patent/CN215059500U/zh
Application filed by 多立恒（北京）能源技术股份公司 filed Critical 多立恒（北京）能源技术股份公司
Priority to DE212021000561.6U priority Critical patent/DE212021000561U1/de
Publication of WO2022217757A1 publication Critical patent/WO2022217757A1/fr

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    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/48—Attaching valve members to screw-spindles
    • F16K1/482—Attaching valve members to screw-spindles with a collar on the spindle or a groove in the spindle, by which a fixing element is supported, the spindle reaching into the valve member
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • 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
    • F16K41/00—Spindle sealings
    • F16K41/10—Spindle sealings with diaphragm, e.g. shaped as bellows or tube

Definitions

  • the invention relates to the technical field of liquefied petroleum gas storage, in particular to a valve.
  • Liquefied petroleum gas is a flammable substance. When the content in the air reaches a certain concentration range, it will explode in case of an open flame. In preventing the leakage of liquefied petroleum gas, the liquefied petroleum gas valve plays a vital role.
  • the valve of the liquefied petroleum gas cylinder of the prior art includes a valve body 01, the valve body 01 is communicated axially, and the lower end forms a first valve port A, the side wall is provided with a second valve port B, and also includes a valve body 01.
  • the valve body 02 movably installed inside the valve body 01 has a rubber sealing ring 03 between the valve body 02 and the inner cavity of the valve body 01 to realize the sealing along the axial direction of the valve body 01 .
  • the life of the rubber sealing ring 03 is about 5 years
  • the design life of the LPG cylinder is 8 years
  • the design life of the new LPG fiber bottle is 12 years, that is, the original valve does not match the life of the LPG cylinder.
  • the present invention provides a valve.
  • the valve includes a valve body, the valve body is provided with a through hole extending in the axial direction, a first valve port is formed at the lower end of the through hole, and a second valve port communicated with the through hole is provided on the inner wall of the valve body , the valve body side wall is provided with a first sealing surface on the upper side of the second valve port, and also includes a first sealing member fixedly supported on the first sealing surface, and a bellows seal installed on the inner upper end of the valve body
  • the bellows seal includes an inner core and a bellows sleeved on the inner core, the inner core can move in the axial direction of the valve body to seal or open the first valve port, the bellows
  • the axial lower end is fixedly connected with the inner core, and the upper end is sealedly connected with the first sealing member.
  • the cap nut installed at the opening of the upper end of the valve body is threadedly connected with the valve stem, the lower end of the valve stem is connected with the inner core and can be rotated relatively, and the upper end is fixedly connected with the handwheel.
  • a limiting step is provided on the peripheral wall of the valve stem to limit the maximum upward displacement of the inner core.
  • the upper end of the bellows is provided with an outwardly extending flange, and further includes an annular pressing member for pressing the flange and the first sealing member against the first sealing member. Sealing surface.
  • the side wall of the valve body is further provided with a second sealing surface on the lower side of the first sealing surface
  • the bottom wall of the inner core is provided with an annular installation groove at a predetermined position, and further includes a second sealing member
  • the second sealing member is installed inside the annular installation groove, the inner core moves along the axial direction of the valve body, and the second sealing member can compress or loosen the second sealing surface to seal or loosen the second sealing member. Open the first valve port.
  • the materials of the first sealing member and the second sealing member are both polytetrafluoroethylene.
  • the second sealing surface is provided with an annular groove or an annular protrusion at a position in contact with the second sealing member.
  • the shape of the annular groove is a sharp angle or an arc.
  • the bottom wall of the annular installation groove is further provided with at least one groove.
  • the valve improves the structure of the valve body and the valve body. Specifically, a first sealing surface is added on the upper end of the second valve port, and the first sealing member is fixedly supported on the first sealing surface; at the same time, the bellows sealing member is inside A bellows is added to the outer circumference of the core.
  • the fixed end of the bellows and the inner core can expand and contract in the axial direction with the movement of the inner core, while the other end is always It is sealingly connected with the first sealing member, fixedly supported on the first sealing surface, and plays a sealing role, so that when the first valve port is opened, the liquefied petroleum gas can only be discharged through the second valve port.
  • the first sealing member adopts static sealing, which is more reliable in sealing and has a longer service life.
  • Fig. 1 is the structural representation of prior art valve
  • FIG. 2 is a schematic structural diagram of a specific embodiment of the valve provided by the present invention.
  • Fig. 3 is a partial schematic diagram of the valve of Fig. 2;
  • FIG. 4 is a schematic structural diagram of the first embodiment of the annular groove provided on the second sealing surface
  • FIG. 5 is a schematic structural diagram of the second embodiment of the annular groove provided on the second sealing surface
  • FIG. 6 is a schematic structural diagram of a third embodiment of the annular groove provided on the second sealing surface
  • Fig. 7 is the structural representation of the first embodiment of the bellows seal in the valve of Fig. 2;
  • FIG. 8 is a schematic structural diagram of the second embodiment of the bellows seal in the valve of FIG. 2;
  • I-first valve port O-second valve port; a-annular groove; b-groove.
  • first and second mentioned in this document are only for the convenience of describing two or more structures or components with the same or similar structures and/or functions, and do not indicate any order and/or importance. some kind of special restriction.
  • the present invention provides a valve, comprising a valve body 1, the valve body 1 is provided with a through hole extending in the axial direction, the lower end of the through hole forms a first valve port I, and the inner wall of the valve body 1 is provided with a through hole The second valve port O communicated;
  • the inner side wall of the valve body 1 is provided with a first sealing surface on the upper side of the second valve port O, and also includes a first sealing member 2 fixedly supported on the first sealing surface, and a bellows sealing member installed on the inner upper end of the valve body 1 , the bellows seal includes an inner core 3, and a bellows 4 that sets the inner core 3.
  • the inner core 3 can move along the axial direction of the valve body 1 to seal or open the first valve port I, and the axial lower end of the bellows 4 is connected to The inner core 3 is fixedly connected, and the upper end is sealed with the first sealing member 2 .
  • the valve improves the structure of the valve body and the valve body. Specifically, a first sealing surface is added to the upper end of the second valve port O, and the first sealing member 2 is fixedly supported on the first sealing surface; at the same time, the bellows sealing member A bellows 4 is added on the outer circumference of the inner core 3. Since the bellows 4 has elasticity, during the axial movement of the inner core 3 along the valve body 1, the fixed lower end of the bellows 4 and the inner core 3 can follow the inner core 3. The movement is axially stretched, and the upper end is always sealed with the first seal 2, fixedly supported on the first sealing surface, and plays a sealing role, so that when the first valve port 1 is opened, the liquefied petroleum gas can only pass through the second seal. Valve port O is discharged.
  • the first sealing member 2 adopts static sealing, which is more reliable in sealing and has a longer service life.
  • the corrugated pipe 4 is made of stainless steel, which is fixedly connected to the inner core 3 by welding, and its folds can be arc-shaped or sharp-angled; the structure of the corrugated pipe 4 is not Not limited to the above form, the material can also be a non-metallic material with elasticity.
  • the valve also includes a cap nut 7 installed at the opening of the upper end of the valve body 1.
  • the cap nut 7 is threadedly connected to the valve stem 5, and the lower end of the valve stem 5 is connected to the inner core 3 and can be rotated relatively.
  • the handwheel 6 is fixedly connected, and the valve stem 5 is rotated through the handwheel 6 to push the inner core 3 to move up and down, so as to realize the opening and closing of the valve.
  • the peripheral wall of the valve stem 5 is further provided with a limiting step 9 to limit the maximum upward displacement of the inner core 3 and prevent the bellows 4 from being over-compressed.
  • the upper end of the bellows 4 is provided with a flange extending outward, and also includes an annular pressing member 8 for pressing the flange and the first sealing member 2 on the first sealing surface.
  • the inner side wall of the valve body 1 is further provided with a second sealing surface on the lower side of the first sealing surface
  • the bottom wall of the inner core 3 is provided with an annular installation groove at a predetermined position, and also includes a second sealing member 010
  • the first The second sealing member 010 is installed inside the annular installation groove
  • the inner core 3 moves along the axial direction of the valve body 1, and the second sealing member 010 can compress or loosen the second sealing surface to seal or open the first valve port 1.
  • the annular installation groove is used to install the second seal 010, therefore, its shape is not limited, and the side wall of the annular installation groove may be a plane surface or an arc surface.
  • the materials of the first sealing member 2 and the second sealing member 010 are both corrosion-resistant polytetrafluoroethylene, which can improve the service life and sealing reliability of the valve of the present invention.
  • the material of the seal includes, but is not limited to, Teflon.
  • FIG. 4 is a schematic structural diagram of the first embodiment of the second sealing surface with annular grooves
  • FIG. 5 is a structural schematic diagram of the second embodiment of the second sealing surface with annular grooves
  • FIG. 6 is a schematic structural diagram of the third embodiment of the annular groove provided on the second sealing surface.
  • the second sealing surface is further provided with an annular groove a at the part that is in contact with the second sealing member 010 to realize double-ring sealing.
  • the width of the annular groove a is not limited and can be smaller than the second sealing surface and the second sealing surface.
  • the width of the contact area of the sealing member 010 is equal to the width of the contact area between the second sealing surface and the second sealing member 010;
  • the specific shape of the annular groove a is also not limited, and can be an arc shape, or a sharp angle shape, etc.; of course, In practical applications, it is also feasible to provide annular protrusions.
  • At least one groove b is also provided on the bottom wall of the annular mounting groove on the bottom wall of the inner core 3 for mounting the second sealing member 010 .
  • the second sealing member 010 is press-fitted inside the annular installation groove. At the same time, since the sealing member will creep after years of use, in order to prevent the second sealing member 010 from falling off after long-term use, at the bottom wall of the annular installation groove, at least For a groove b, the second sealing member 010 will slowly enter the reserved groove b after being deformed, and the sealing can still be well achieved.
  • the bottom wall of the annular installation groove is provided with two grooves b.
  • the number and shape of the grooves b are not limited.
  • an inwardly folded limit portion may also be provided at the open end of the annular installation groove to limit the second sealing member 010 .

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Valves (AREA)

Abstract

L'invention concerne une soupape comprenant un corps de soupape (1), un trou traversant s'étendant dans une direction axiale étant prévu dans le corps de soupape (1), un premier orifice de soupape (I) étant formé au niveau de l'extrémité inférieure du trou traversant et un second orifice de soupape (O) en communication avec le trou traversant étant ménagé dans une paroi interne du corps de soupape (1). Une paroi latérale interne du corps de soupape (1) est pourvue d'une première face d'étanchéité sur un côté supérieur du second orifice de soupape (O) ; et comprend en outre un premier élément d'étanchéité (2) qui est supporté de manière fixe sur la première face d'étanchéité, et un élément d'étanchéité de tuyau ondulé, qui est monté à l'extrémité supérieure à l'intérieur du corps de soupape (1). L'élément d'étanchéité de tuyau ondulé comprend un noyau interne (3) et un tuyau ondulé (4) emmanché sur le noyau interne (3), le noyau interne (3) pouvant se déplacer dans la direction axiale du corps de soupape (1), de manière à sceller ou à ouvrir le premier orifice de soupape (I). L'extrémité inférieure axiale du tuyau ondulé (4) est reliée de manière fixe au noyau interne (3) et l'extrémité supérieure est hermétiquement reliée au premier élément d'étanchéité (2). La soupape change le mode d'étanchéité, utilise une étanchéité statique, améliore la durée de vie de l'élément d'étanchéité et augmente la fiabilité d'étanchéité.
PCT/CN2021/103573 2021-04-16 2021-06-30 Soupape WO2022217757A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE212021000561.6U DE212021000561U1 (de) 2021-04-16 2021-06-30 Ventil

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202110411409.2A CN112923068A (zh) 2021-04-16 2021-04-16 一种阀门
CN202110411409.2 2021-04-16
CN202120790140.9U CN215059500U (zh) 2021-04-16 2021-04-16 一种阀门
CN202120790140.9 2021-04-16

Publications (1)

Publication Number Publication Date
WO2022217757A1 true WO2022217757A1 (fr) 2022-10-20

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ID=83640113

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/103573 WO2022217757A1 (fr) 2021-04-16 2021-06-30 Soupape

Country Status (2)

Country Link
DE (1) DE212021000561U1 (fr)
WO (1) WO2022217757A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08201823A (ja) * 1995-01-27 1996-08-09 Nippon Soken Inc 液晶セルの製造方法および液晶セルの製造装置
CN1155927A (zh) * 1994-08-18 1997-07-30 Ksb股份公司 带波纹管密封的阀门
CN201461974U (zh) * 2009-05-25 2010-05-12 冯洁 阀杆无泄漏阀门
CN107387783A (zh) * 2017-09-06 2017-11-24 苏州良阀阀门有限公司 一种截止阀
CN206786022U (zh) * 2017-06-12 2017-12-22 齐权丞 一种真空阀门
CN209990921U (zh) * 2019-07-26 2020-01-24 河南友邦木业有限公司 一种用于油加热器的高效节能控制阀门
CN112344030A (zh) * 2020-10-22 2021-02-09 九江中船消防设备有限公司 一种lng船用钛合金隔离阀
CN112923068A (zh) * 2021-04-16 2021-06-08 多立恒（北京）能源技术股份公司 一种阀门

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1155927A (zh) * 1994-08-18 1997-07-30 Ksb股份公司 带波纹管密封的阀门
JPH08201823A (ja) * 1995-01-27 1996-08-09 Nippon Soken Inc 液晶セルの製造方法および液晶セルの製造装置
CN201461974U (zh) * 2009-05-25 2010-05-12 冯洁 阀杆无泄漏阀门
CN206786022U (zh) * 2017-06-12 2017-12-22 齐权丞 一种真空阀门
CN107387783A (zh) * 2017-09-06 2017-11-24 苏州良阀阀门有限公司 一种截止阀
CN209990921U (zh) * 2019-07-26 2020-01-24 河南友邦木业有限公司 一种用于油加热器的高效节能控制阀门
CN112344030A (zh) * 2020-10-22 2021-02-09 九江中船消防设备有限公司 一种lng船用钛合金隔离阀
CN112923068A (zh) * 2021-04-16 2021-06-08 多立恒（北京）能源技术股份公司 一种阀门

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