CN205896249U - Ultra -low temperature upper assembling type ball valve sealed fixed firmly - Google Patents

Ultra -low temperature upper assembling type ball valve sealed fixed firmly Download PDF

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Publication number
CN205896249U
CN205896249U CN201620881039.3U CN201620881039U CN205896249U CN 205896249 U CN205896249 U CN 205896249U CN 201620881039 U CN201620881039 U CN 201620881039U CN 205896249 U CN205896249 U CN 205896249U
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CN
China
Prior art keywords
adjusting nut
valve
ball valve
ultralow temperature
low temperature
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
CN201620881039.3U
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Chinese (zh)
Inventor
吴钊
焦伦龄
王奕彤
吴啸
孙曾兴
张慧乐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Founder Valve Group Co.,Ltd.
Original Assignee
Founder Valve Group Co ltd
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Publication date
Application filed by Founder Valve Group Co ltd filed Critical Founder Valve Group Co ltd
Priority to CN201620881039.3U priority Critical patent/CN205896249U/en
Application granted granted Critical
Publication of CN205896249U publication Critical patent/CN205896249U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an ultra -low temperature upper assembling type ball valve sealed fixed firmly mainly solved present ultra -low temperature upper assembling type ball valve sealed fixed firmly and come control valve seat back disc spring's tensity to set up sealed pretightning force through adjusting nut, but the valve can become flexible at long -time running in -process adjusting nut to messenger's pretightning force reduces, produces the problem of leaking. The utility model provides an ultra -low temperature upper assembling type ball valve sealed fixed firmly is equipped with sealed complex spheroid and disk seat in its valve body, disk seat circumference outer wall is equipped with screw -thread fit's adjusting nut, and adjusting nut circumference outer wall still is equipped with locking round pin, and locking round pin one end is equipped with elasticity pre -tightening piece, and one end is used for pushing up adjusting nut to the disk seat. Locking round pin roof pressure adjusting nut, it is flexible to utilize elasticity pre -tightening piece to realize, has avoided because the sealing leak that adjusting nut is not hard up, the pretightning force reduces to lead to that the long -time running leads to simple structure, convenient to use.

Description

Formula hard seal fixing ball valve is filled on ultralow temperature
Technical field
This utility model is related to ball valve field and in particular to filling formula hard seal fixing ball valve on ultralow temperature.
Background technology
Ball valve has the advantages that installing space is little, open and close rapid, sealed reliable, and in order to avoid pipeline alternating temperature-changing stress To sealing impact and conveniently realize on-line maintenance, the commonly used upper dress formula soft sealing ball valve of lng pipe network.Fill on lng ultralow temperature Formula ball valve should analyze the particularity of its medium due to its worst cold case, its structure design, makes ball body of valve both enable dress, just In Operation and Maintenance and reliability service, ensure the effective sealing between valve seat and valve body and between sealing surface and valve seat again, it is to avoid Produce internal hemorrhage due to trauma.Lead to sealing leak because soft valve seat is easily contracted thereby to become hard under ultralow temperature, and for containing solid particle Fragile during medium, so when tackling this kind of special media, can effectively be prevented above-mentioned using ultra low temperature hard sealing structure The generation of problem.
On present ultralow temperature, dress formula hard seal fixing ball valve, leads to for threadeding due between valve seat and adjusting nut Overregulate nut and carry out the tensity of the control valve seat back side butterfly spring pretightning force to arrange sealing surface, but valve is in longtime running During adjusting nut can loosen so that pretightning force reduce, produce leakage.
Utility model content
In order to overcome the shortcomings of background technology, this utility model provides and fills formula hard seal fixing ball valve on ultralow temperature, mainly Solve dress formula hard seal fixing ball valve on present ultralow temperature tight come control valve seat back side butterfly spring by adjusting nut Tonicity is arranging the pretightning force of sealing surface, but valve adjusting nut in During Process of Long-term Operation can loosen, so that pretightning force subtracts Little, produce leakage
Problem.
This utility model be the technical scheme is that
Formula hard seal fixing ball valve is filled on ultralow temperature, including valve body, in described valve body, is provided with spheroid and the valve of sealing cooperation Seat, described valve seat peripheral outer wall is provided with the adjusting nut of screw thread cooperation, and described adjusting nut peripheral outer wall is additionally provided with check pin, institute State check pin one end and be provided with elastic preload piece, one end is used for described adjusting nut top to described valve seat.
Detachably it is combined with valve gap on described valve body, between described check pin and described valve gap, be provided with described elasticity pretension Part.
Described elasticity preload piece is spring.
Described check pin is engaged by clamping with described adjusting nut.
It is provided with disc spring between described adjusting nut and described valve seat.
Upper shaft for being connected with valve gap and the lower axle for being connected with described valve body are integrally formed with described spheroid.
The beneficial effects of the utility model are: this utility model provides and fills formula hard seal fixing ball valve, its valve on ultralow temperature It is provided with spheroid and the valve seat of sealing cooperation in vivo, valve seat peripheral outer wall is provided with the adjusting nut of screw thread cooperation, adjusting nut circumference Outer wall is additionally provided with check pin, and check pin one end is provided with elastic preload piece, and one end is used for adjusting nut top to valve seat.Check pin top Pressure adjusting nut, realized flexible using elastic preload piece, it is to avoid is loosened due to the adjusting nut that longtime running leads to, pretightning force Reduce the sealing leak leading to, structure is simple, easy to use.
Brief description
Fig. 1 is the cross-sectional schematic of one embodiment of this utility model.
Fig. 2 is enlarged drawing at a in Fig. 1.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings: as illustrated, dress formula seals fixation firmly on ultralow temperature Ball valve, including valve body 1, is provided with spheroid 2 and the valve seat 3 of sealing cooperation, described valve seat 3 peripheral outer wall is provided with spiral shell in described valve body 1 The adjusting nut 4 of stricture of vagina cooperation, described adjusting nut 4 peripheral outer wall is additionally provided with check pin 5, and described check pin 5 one end is provided with elasticity Preload piece 51, one end is used for pushing up described adjusting nut 4 to described valve seat 3.This utility model provides dress formula on ultralow temperature firmly close Envelope fixing ball valve, is provided with spheroid and the valve seat of sealing cooperation in its valve body, valve seat peripheral outer wall is provided with the regulation spiral shell of screw thread cooperation Mother, adjusting nut peripheral outer wall is additionally provided with check pin, and check pin one end is provided with elastic preload piece, and one end is used for adjusting nut top To valve seat.Check pin top pressure adjusting nut, realized flexible using elastic preload piece, it is to avoid the regulation being led to due to longtime running The sealing leak that nut loosening, pretightning force reduction lead to, structure is simple, easy to use.Valve seat construction designs for dib-2, passes through The combination of single double piston valve holder structure, had both achieved lumen from pressure release, and had made valve internal have two sealing structures again, improve Valve downstream section and the reliability of downstream sealing.The disc spring at adjusting nut back prevents because under ultralow temperature, Material shrinkage is led The reduction of the seal preload causing is it is ensured that sealing reliability under ultralow temperature for the valve seat.
In the present embodiment, as illustrated, valve gap 11 is detachably combined with described valve body 1, described check pin 5 with described It is provided with described elasticity preload piece 51 between valve gap 11.Here on valve gap, fit on is easier elastic preload piece top pressure, when So top pressure can also be arranged to according to the actual requirements in valve interior wall.
In the present embodiment, as illustrated, described elasticity preload piece 51 is spring.May be otherwise using other elasticity Part, spring is preferred version, and cost is relatively low, is easy to obtain.
In the present embodiment, as illustrated, described check pin 5 is engaged by clamping with described adjusting nut 4.Assembling is more square Just, using effect is good.
In the present embodiment, as illustrated, being provided with disc spring 52 between described adjusting nut 4 and described valve seat 3.Adjusting nut The disc spring at back prevents the reduction of the seal preload leading to due to Material shrinkage under ultralow temperature it is ensured that valve seat is in ultralow temperature Under sealing reliability.
In the present embodiment, as illustrated, the upper shaft 21 for being connected with valve gap 11 being integrally formed with described spheroid 2 and using In the lower axle 22 being connected with described valve body 1.Spheroid and the design of upper and lower axle one, ensure that between spheroid and valve seat to greatest extent That runs stablizes, and is more beneficial for the sealing of valve seat.
Embodiment is not construed as to restriction of the present utility model, but any based on changing that spirit of the present utility model is made Enter, all should be within protection domain of the present utility model.

Claims (6)

1. formula hard seal fixing ball valve is filled on ultralow temperature, including valve body (1), in described valve body (1), is provided with the spheroid of sealing cooperation (2) and valve seat (3), described valve seat (3) peripheral outer wall be provided with screw thread cooperation adjusting nut (4) it is characterised in that: described regulation Nut (4) peripheral outer wall is additionally provided with check pin (5), and described check pin (5) one end is provided with elastic preload piece (51), and one end is used for will Described adjusting nut (4) is pushed up to described valve seat (3).
2. on ultralow temperature according to claim 1 dress formula hard seal fixing ball valve it is characterised in that: on described valve body (1) Detachably it is combined with valve gap (11), between described check pin (5) and described valve gap (11), be provided with described elasticity preload piece (51).
3. on ultralow temperature according to claim 2 dress formula hard seal fixing ball valve it is characterised in that: described elasticity preload piece (51) it is spring (52).
4. on ultralow temperature according to claim 2 dress formula hard seal fixing ball valve it is characterised in that: described check pin (5) It is engaged by clamping with described adjusting nut (4).
5. on ultralow temperature according to claim 1 dress formula hard seal fixing ball valve it is characterised in that: described adjusting nut (4) it is provided with disc spring and described valve seat (3) between.
6. on ultralow temperature according to claim 1 dress formula hard seal fixing ball valve it is characterised in that: on described spheroid (2) It is integrally formed with the upper shaft (21) for being connected and the lower axle (22) for being connected with described valve body (1) with valve gap (11).
CN201620881039.3U 2016-08-16 2016-08-16 Ultra -low temperature upper assembling type ball valve sealed fixed firmly Active CN205896249U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620881039.3U CN205896249U (en) 2016-08-16 2016-08-16 Ultra -low temperature upper assembling type ball valve sealed fixed firmly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620881039.3U CN205896249U (en) 2016-08-16 2016-08-16 Ultra -low temperature upper assembling type ball valve sealed fixed firmly

Publications (1)

Publication Number Publication Date
CN205896249U true CN205896249U (en) 2017-01-18

Family

ID=57781421

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620881039.3U Active CN205896249U (en) 2016-08-16 2016-08-16 Ultra -low temperature upper assembling type ball valve sealed fixed firmly

Country Status (1)

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CN (1) CN205896249U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107202176A (en) * 2017-08-02 2017-09-26 上海凯工阀门股份有限公司 Formula ultralow temperature fixing ball valve is filled in one kind

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107202176A (en) * 2017-08-02 2017-09-26 上海凯工阀门股份有限公司 Formula ultralow temperature fixing ball valve is filled in one kind

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Legal Events

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C14 Grant of patent or utility model
GR01 Patent grant
CP03 Change of name, title or address
CP03 Change of name, title or address

Address after: 325000 no.1921 Binhai 1st Road, Wenzhou Economic and Technological Development Zone, Wenzhou City, Zhejiang Province

Patentee after: Founder Valve Group Co.,Ltd.

Address before: Yongjia oubeizhen Wenzhou County of Zhejiang province 325102 city and village

Patentee before: FANGZHENG VALVE GROUP Co.,Ltd.