WO2018133225A1 - Soupape spéciale pour le chlore - Google Patents

Soupape spéciale pour le chlore Download PDF

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Publication number
WO2018133225A1
WO2018133225A1 PCT/CN2017/081191 CN2017081191W WO2018133225A1 WO 2018133225 A1 WO2018133225 A1 WO 2018133225A1 CN 2017081191 W CN2017081191 W CN 2017081191W WO 2018133225 A1 WO2018133225 A1 WO 2018133225A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
disposed
stem
flap
cover
Prior art date
Application number
PCT/CN2017/081191
Other languages
English (en)
Chinese (zh)
Inventor
毛春龙
毛金根
陈善俊
Original Assignee
江苏金晟元特种阀门股份有限公司
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
Application filed by 江苏金晟元特种阀门股份有限公司 filed Critical 江苏金晟元特种阀门股份有限公司
Publication of WO2018133225A1 publication Critical patent/WO2018133225A1/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
    • 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
    • F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
    • F16K41/04—Spindle sealings with stuffing-box ; Sealing rings with at least one ring of rubber or like material between spindle and housing

Definitions

  • the invention relates to the technical field of manufacturing special valves, in particular to a special valve for chlorine gas.
  • the present invention provides a special chlorine gas special valve.
  • the invention comprises a valve body, a valve cover, a valve seat, a valve flap and a valve stem, wherein the valve seat is fixed in the valve body, a sealing end surface of the valve flap is closely matched with the valve seat, and the valve body comprises an inlet And an outlet port, wherein the inlet and outlet are respectively provided with an interface flange, and a connection flange is disposed at the middle connection port, the inlet and the outlet are located on the same axis, and the middle connection port is located at the inlet a vertical direction of the outlet direction, the valve cover is sealed and fixed to the connecting flange by a plurality of bolts and nuts; a through hole is disposed in the center of the valve cover, and the valve stem passes through the through hole, the valve stem One end of the valve stem is connected to the valve flap, and the other end of the valve stem is disposed outside the valve body; a packing sealing mechanism is arranged between the valve stem and the valve cover, and the outer top end of the valve stem is connected to the hand wheel and the
  • the tapered surface of the valve flap is in contact with the sealing member of the polytetrafluoroethylene resin
  • the valve stem of the valve body is provided with a reverse tapered sealing protrusion facing away from the valve flap, and a cone notch corresponding to the inverted tapered sealing protrusion is disposed at a center of the inner end surface of the valve cover.
  • the inverted tapered sealing protrusion closely matches the tapered notch.
  • the hand wheel When the invention works, the hand wheel is rotated clockwise, and the valve stem is driven to close the valve flap connected to the valve stem to the sealing surface of the valve seat. After the valve is completely matched, the valve is closed; the hand wheel is rotated counterclockwise to drive the valve stem to connect the valve to the valve.
  • the valve flap on the rod leaves the seat sealing surface and the valve opens. When opened to a quarter of the valve diameter, the valve is fully open.
  • the valve seat and the disc are double-sealed with a flat surface and a tapered surface. The taper surface is in contact at the beginning. After a period of use, the plastic is compression-molded (deformed) with the closing force, and the plane of the end of the valve flap begins.
  • the sealing performance is good, the use is safe and reliable, and constitutes a double safety seal. Furthermore, an inverted sealing structure is adopted between the valve stem and the valve cover, which further prevents leakage of material in the valve body and further ensures the sealing effect.
  • the first step surface of the lower layer is disposed on the outer end surface of the middle connecting port of the valve body, and the inner end surface of the valve cover is provided with a convex second step surface, and the first and second step surfaces cooperate with each other.
  • a PTFE gasket is disposed between the first and second step faces.
  • the connecting portion of the valve body and the valve cover of the invention adopts a guiding structure, and the connection manner of the PTFE fluoroplastic sealing gasket is built in, thereby effectively preventing the looseness of the middle flange bolt caused by the fluctuation of the pipeline pressure, thereby causing the possibility of leakage of the middle flange, because the PTFE has Very strong plastic deformation compensation ability.
  • the packing sealing mechanism of the invention comprises a stuffing box, a V-type fluoroplastic filler, an O-type fluoroplastic filler, a packing gland, and one O-type fluoroplastic filler is arranged at the bottom of the stuffing box, and a plurality of O-type fluoroplastic fillers are arranged above
  • the V-type fluoroplastic filler having an opening facing the valve body is pressed with a layer of the O-type fluoroplastic filler above the uppermost V-shaped fluoroplastic filler, and the packing gland is pressed over the O-type and V-type fluoroplastic filler.
  • the invention adopts multi-stage V-shaped O-shaped fluoroplastic filler, and forms a combined sealing pair from the upper, middle and lower sides, reliably ensures that the medium does not leak, and the filler is maintenance-free for life.
  • the valve flap of the present invention includes a valve body, a flap cover, and an inner end of the valve stem connected to the flap cover, and the flap cover is detachably fixedly connected to the valve body; After the valve disc is worn, only the valve body can be replaced, and the replacement and maintenance are convenient.
  • valve body and the valve cover of the invention are all formed by integral casting or forging (LF2) of LCB low temperature steel; the low temperature steel of LCB is suitable for operation in a low temperature environment, mainly at minus 46 °C.
  • LF2 integral casting or forging
  • Figure 1 is a schematic view of the structure of the present invention.
  • the special chlorine gas special valve includes a valve body 1, a valve cover 7, a valve seat 2, a valve flap 3, a valve stem 5, and the valve seat 2 is fixed in the valve body 1, and the sealing end face of the valve flap 3 is
  • the valve seat 2 is closely matched, and the valve body 1 includes an inlet 12, an outlet 13, and a middle connecting port 14.
  • the interface flange 15 is respectively disposed at the inlet and outlet 12, and the connecting flange 16 is disposed at the central connecting port 14, and the inlet and the outlet are provided.
  • valve stem 5 passes through the through hole 17, one end of the valve stem 5 is connected to the valve flap 3, and the other end of the valve stem 5 is disposed outside the valve body 1; a packing sealing mechanism 18 is disposed between the valve stem 5 and the valve cover 7, the valve stem
  • the outer top end of the 5 is connected to the hand wheel 11, the valve stem 5 outside the valve body 1 is provided with a thread, the valve stem guide bracket 19 is integrally disposed on the valve cover 7, and the fixed sleeve 20 is fixed at the top end of the valve stem guide bracket 19, and the fixed sleeve 20 is fixed.
  • the valve rod 5 is internally fixedly coupled with the valve stem nut 10, and the valve stem 5 is threadedly coupled with the valve stem nut 10; the end edge of the valve disc 3 and the valve seat 2 is set to
  • the surface 21 is provided with a ring-shaped shaped groove 22 on the end surface of the valve seat 2 which is in contact with the valve flap 3, and a polytetrafluoroethylene resin sealing body 23 is disposed in the shaped groove 22, and the tapered surface 21 of the valve flap 3 and the polytetrafluoroethylene
  • the resin sealing body 23 is in contact with the valve;
  • the valve stem 5 in the valve body 1 is provided with a reverse tapered sealing projection 24 facing away from the valve flap 3, and is disposed at the center of the inner end surface of the valve cover 7 and the inverted tapered sealing projection 24 Corresponding tapered notches 25, the inverted tapered sealing projections 24 are in close engagement with the tapered notches 25.
  • a first step surface 26 of the lower layer is disposed on the outer end surface of the central connecting port of the valve body 1, and the inner end surface of the valve cover 7 is provided with a convex second step surface 27, and the first and second step surfaces 26 and 27 cooperate with each other.
  • a PTFE gasket 6 is disposed between the first and second step faces 26, 27.
  • the packing sealing mechanism 18 comprises a stuffing box 28, a V-type fluoroplastic filler 29, an O-type fluoroplastic filler 30, a packing gland 9, an O-type fluoroplastic filler 30 disposed at the bottom of the stuffing box 28, in the O-type fluoroplastic
  • a plurality of V-shaped fluoroplastic fillers 29 having openings facing the valve body are disposed above the filler 30, and an O-type fluoroplastic filler 30 is pressed over the uppermost V-shaped fluoroplastic filler 29, and the packing gland 9 is pressed against the O-type and V-type fluoroplastics. Above the fillers 30, 29.
  • valve flap 3 includes a valve body 31, a flap cover 4, and an inner end of the valve stem 5 is coupled to the flap cover 4, and the flap cover 4 is detachably fixedly coupled to the flap body 31.

Landscapes

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

Abstract

L'invention concerne une soupape spéciale pour le chlore, comprenant un corps de soupape (1), un capot (7), un siège (2), un disque (3) et une tige (5). Le siège (2) est fixé dans le corps de soupape (1). Une face d'extrémité d'étanchéité du disque (3) et le siège (2) forment un ajustement serré. Le centre du capot (7) est muni d'un trou traversant (17). La tige (5) passe à travers le trou traversant (17). Une extrémité de la tige (5) est reliée au disque (3), et l'autre extrémité de la tige (5) est disposée à l'extérieur du corps de soupape (1). Un mécanisme à garniture d'étanchéité (18) est disposé entre la tige (5) et le capot (7). Une extrémité supérieure externe de la tige (5) est reliée à un volant de manœuvre (11). Un bord de la partie d'extrémité du disque (3), s'adaptant au siège (2), prend la forme d'une face conique (21). Une rainure circulaire (22) de forme spéciale est disposée sur une face d'extrémité du siège (2) en contact avec le disque (3). Un corps d'étanchéité (23) en résine de polytétrafluoroéthylène est disposé dans la rainure (22) de forme spéciale. La face conique (21) du disque (3) et le corps d'étanchéité (23) en résine de polytétrafluoroéthylène forment un ajustement de contact. Une saillie inversement conique (24), dont le dos fait face au disque (3), est disposée sur la tige (5) et dans le corps de soupape (1). Le centre d'une face d'extrémité interne du capot (7) est muni d'une encoche conique (25) correspondant à la saillie inversement conique (24). La saillie inversement conique (24) et l'encoche conique (25) forment un ajustement serré. La soupape de l'invention est favorablement étanche, et présente une longue durée de vie.
PCT/CN2017/081191 2017-01-22 2017-04-20 Soupape spéciale pour le chlore WO2018133225A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710047149.9A CN106763833A (zh) 2017-01-22 2017-01-22 特种氯气专用阀
CN201710047149.9 2017-01-22

Publications (1)

Publication Number Publication Date
WO2018133225A1 true WO2018133225A1 (fr) 2018-07-26

Family

ID=58945297

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/081191 WO2018133225A1 (fr) 2017-01-22 2017-04-20 Soupape spéciale pour le chlore

Country Status (2)

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CN (1) CN106763833A (fr)
WO (1) WO2018133225A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108506503B (zh) * 2018-04-08 2019-02-22 江苏圣泰阀门有限公司 核用截止阀
CN108825829B (zh) * 2018-07-18 2021-03-09 凯利德阀门有限公司 一种可手动调节流量的单向阀

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2928646A (en) * 1958-06-10 1960-03-15 Clifford L Ashbrook Chlorine flow control valve
CN2336155Y (zh) * 1998-06-15 1999-09-01 江苏海安通达水暖器材厂 氯酸专用截止阀
CN101225885A (zh) * 2007-01-17 2008-07-23 江苏明江阀业有限公司 氯碱专用氟塑料全衬截止阀
CN201954017U (zh) * 2010-12-14 2011-08-31 江苏江华阀业有限公司 无泄漏锥面密封湿氯专用阀
CN103671934A (zh) * 2012-09-02 2014-03-26 江苏海达船用阀业有限公司 高密封性耐腐蚀全衬截止阀

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001208217A (ja) * 2000-01-21 2001-08-03 Showa Denko Kk 弁及びその製造方法
CN2854238Y (zh) * 2005-11-04 2007-01-03 淄博泰丰阀门制造有限公司 氯碱蒸发专用阀
CN201071938Y (zh) * 2007-07-26 2008-06-11 上海凯工阀门有限公司 一种两用阀
CN201651333U (zh) * 2010-01-11 2010-11-24 江苏明江阀业有限公司 一种氯气专用阀
CN201973260U (zh) * 2011-03-31 2011-09-14 江苏金晟元特种阀门有限公司 一种氯气专用阀
CN202659915U (zh) * 2012-07-22 2013-01-09 江苏金晟元特种阀门有限公司 氨用截止阀
CN206409650U (zh) * 2017-01-22 2017-08-15 江苏金晟元特种阀门股份有限公司 特种氯气专用阀

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2928646A (en) * 1958-06-10 1960-03-15 Clifford L Ashbrook Chlorine flow control valve
CN2336155Y (zh) * 1998-06-15 1999-09-01 江苏海安通达水暖器材厂 氯酸专用截止阀
CN101225885A (zh) * 2007-01-17 2008-07-23 江苏明江阀业有限公司 氯碱专用氟塑料全衬截止阀
CN201954017U (zh) * 2010-12-14 2011-08-31 江苏江华阀业有限公司 无泄漏锥面密封湿氯专用阀
CN103671934A (zh) * 2012-09-02 2014-03-26 江苏海达船用阀业有限公司 高密封性耐腐蚀全衬截止阀

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