CN104089044B - LNG ultra-low temperature top-mounting type ball valve seat capable of achieving pre-tightening force fine tuning and on-line disassembling - Google Patents
LNG ultra-low temperature top-mounting type ball valve seat capable of achieving pre-tightening force fine tuning and on-line disassembling Download PDFInfo
- Publication number
- CN104089044B CN104089044B CN201410336421.1A CN201410336421A CN104089044B CN 104089044 B CN104089044 B CN 104089044B CN 201410336421 A CN201410336421 A CN 201410336421A CN 104089044 B CN104089044 B CN 104089044B
- Authority
- CN
- China
- Prior art keywords
- valve seat
- valve
- ring
- lng
- downstream
- 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
Links
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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0626—Easy mounting or dismounting means
- F16K5/0636—Easy mounting or dismounting means the spherical plug being insertable from the top of the housing
-
- 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
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
-
- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
Abstract
The invention discloses an LNG ultra-low temperature top-mounting type ball valve seat capable of achieving pre-tightening force fine tuning and on-line disassembling. The LNG ultra-low temperature top-mounting type ball valve seat is characterized in that valve seat bearings are symmetrically arranged at the position, located on the upstream side and the downstream side of a valve element ball, in a valve body, and a locating pin is arranged between the end faces of the tails of the valve seat bearings and the front end face of a valve seat fixing ring; a valve seat sealing ring is embedded in twisting edges of the front ends of the valve seat bearings; valve seat pressing rings matched with the valve seat bearings in a threaded mode are arranged on the peripheries of the valve seat bearings, pre-tightening compressed springs are arranged between the tails of the valve seat pressing rings and the valve body, and the valve seat bearings can move in the axis direction by rotating the valve seat pressing rings. The LNG ultra-low temperature top-mounting type ball valve seat can be suitable for meeting requirements of LNG actual using conditions, the requirements for on-line maintenance, automatic decompression of a middle cavity in time and safe and reliable sealing performance are met, and quality and safety of LNG projects are guaranteed.
Description
Technical field
The present invention is used for relating to the ultralow temperature top-loading ball valve in liquefied natural gas (LNG) field, is mainly used in blocking of LNG medium
Or regulation, on the premise of ensureing LNG valve on-line maintenance, realize reliable sealing property by fine setting valve seat pretightning force, and
By valve seat by the way of line upstream is from pressure release, it is to avoid the explosion danger that valve lumen LNG gasification superpressure is brought.
Background technology
Liquefied natural gas (LNG) industry is the key industry of petrochemical field class, is also the key industry of energy strategy.Along with industry
Development, the sector increasingly paid attention to by country and society, and its yield just with annual about 12% rapid growth, becomes whole world growth
One of the fastest energy industry.It is known that LNG boiling point is-163 DEG C, gas-liquid expansion ratio is big, inflammable and explosive, specific work
Condition requirement so that ball valve must use roof-mounted structure on process pipelines, owing to, in LNG project, valve end is generally adopted
With being welded to connect, it has to be possible to on-line maintenance, and timely automated can release during lumen superpressure, ensure that valve is the closeest simultaneously
Sealing property, meets pipeline technological requirement.Current domestic LNG cryogenic ball valve can not meet the requirement in terms of these all the time simultaneously,
It is disclosed directly below several form the most not fully up to expectations:
1, two panels or three side-mounted valve body structures, such as float ball version, are that boring realizes releasing pressure automatically on spheroid；
Fixing spherical structure form for another example, be that boring realizes releasing pressure automatically on upstream valve seat, these versions all can not meet
The demand of on-line maintenance, meanwhile, in float ball, boring makes upstream seal substantially lose efficacy, and relies solely on downstream valve seat close to realize
Envelope, the basic demand with pipeline valve produces and deviates from；And boring is entirely dependence band helical spring on fixing spherical structure valve seat
Check valve realizes releasing pressure automatically, the most unreliable.
2, roof-mounted valve body structure use the version of integral type valve seat, utilizes the technology groove of processing on valve seat, passes through valve
Two ends port, utilizes frock to pull open to realize the installation of valve ball by both sides valve seat.But this version can only realize top in factory
Dress formula is installed, and after treating that ball valve is arranged on pipeline, the technology groove on valve seat is the most ineffective, the most just cannot really realize valve
On-line maintenance.
3, roof-mounted valve body structure use the version of split type valve seat, uses chain type connector or threaded, by valve seat
Connect into an entirety, although be capable of on-line maintenance, but upstream valve seat and downstream valve seat form are essentially the same, work as upstream valve
During seat seal failure, downstream valve seat can not realize effectively sealing, or when lumen superpressure upstream with downstream simultaneously pressure release, whole
Individual valve can not realize safe and reliable sealing.
Practice have shown that, it is impossible to meet the several respects such as on-line maintenance, the timely automated pressure release of lumen, safe and reliable sealing property simultaneously
If the LNG cryogenic ball valve required is applied in Practical Project, huge potential safety hazard and economic loss will be brought to whole LNG project.
Summary of the invention
The present invention is for avoiding the weak point existing for above-mentioned prior art, it is provided that a kind of fine-tuning pretightning force and online dismounting
LNG ultralow temperature top-loading ball valve valve seat so that it is the demand of the actually used operating mode of LNG can not only be suitable to, and can meet simultaneously
The requirement that line maintenance, the timely automated pressure release of lumen, sealing property are safe and reliable, it is ensured that the quality of LNG project and safety.
The present invention solves that technical problem adopts the following technical scheme that
Being structurally characterized in that of the LNG ultralow temperature top-loading ball valve valve seat of the fine-tuning pretightning force of the present invention and online dismounting:
In valve body, being positioned at the upstream side of spool spheroid and downstream is symmetrical arranged valve seat supporting, described symmetrically arranged valve seat props up
Hold the upstream valve seat supporting being at upstream side respectively and the downstream valve seat supporting being in downstream, at the afterbody that described valve seat supports
Arranging alignment pin between the front end face of end face and valve seat retainer ring, described valve seat retainer ring spot welding is fixed in described valve body；
The front end strand of valve seat supporting it is inlaid in for forming the valve seat insert of ring packing on the surface of valve seat supporting with spool spheroid
Bian Zhong；The valve seat pressure ring coordinated with valve seat support thread is set in the periphery that described valve seat supports, at the afterbody of described valve seat pressure ring
And pretension stage clip is set between valve body, rotates described valve seat pressure ring and valve seat supporting can be made to move in the axial direction.
The construction features of the LNG ultralow temperature top-loading ball valve valve seat of the fine-tuning pretightning force of the present invention and online dismounting lies also in:
Arranging radially fabrication hole on described valve seat pressure ring, the valve seat pressure ring circumferential location being positioned at described radial direction fabrication hole place sets
Putting a locking spacing ring, one end of described locking spacing ring is butted on the positive stop lug boss connecting firmly on valve body, along valve on locking spacing ring
Seat pressure ring circumference is provided with lock slots, and has pinning screw lock between described valve seat pressure ring and locking spacing ring, described pinning
Screw circumferential position in lock slots is adjustable.
Described valve seat pressure ring arranges axial fabrication hole, utilizes described axial fabrication hole can rotate described valve seat pressure ring.
Described valve seat retainer ring is in valve seat retainer ring towards valve seat supporting side extension formation on inner peripheral surface and props up with valve seat
Dust cover between holding.
The construction features of the LNG ultralow temperature top-loading ball valve valve seat of the fine-tuning pretightning force of the present invention and online dismounting also resides in:
The supporting of described upstream valve seat is set to two-stage staged step and seals, and is provided with upstream between its first order step and valve body
Side forward sealing ring, is provided with the reverse sealing ring of upstream side between its second level step and valve body, forms upstream side one-way sealing；
The supporting of described downstream valve seat is set to one-level step and seals, under arranging in back-to-back form between its step surface and valve body
Trip side forward sealing ring and the reverse sealing ring in downstream, form downstream two way seal.
Compared with the prior art, the present invention has the beneficial effect that:
1, the present invention can be adapted to the demand of the actually used operating mode of LNG, and on-line maintenance can be met simultaneously, lumen is timely automated lets out
The requirement that pressure is safe and reliable with sealing property, it is ensured that the quality of LNG project and safety.
2, the present invention uses the split type valve seat of threaded engagement, by rotary valve base pressure ring, makes valve seat supporting in axial direction make straight
Line moves, make valve seat insert near or away from spheroid, and set up dust cover, it is possible to effectively realize the sealing of valve, and
Spheroid is dismantled the most online；
3, the present invention is by arranging locking spacing ring on valve seat pressure ring, it is possible to effectively ensure the sealing property of valve seat, increases valve
The sealing reliability of door；
4, the present invention effectively uses the seal form of various combination between valve body and Integral valve seat, including upstream side one-way sealing and under
Trip side two way seal achieves rational valve overpressure relief function.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
Fig. 2 is valve seat pressure ring and locking spacing ring structural representation in the present invention；
Piston effect force diagram when Fig. 3 a is middle and upper reaches valve seat bearing seal of the present invention；
Piston effect force diagram when Fig. 3 b is middle and lower reaches valve seat bearing seal of the present invention；
Piston effect force diagram when Fig. 4 is middle and upper reaches valve seat of the present invention supporting releasing pressure automatically；
Piston effect force diagram when Fig. 5 is middle and lower reaches valve seat of the present invention supporting lumen superpressure；
Label in figure: 1 valve body, 2 spool spheroids, 3a upstream valve seat supports, and 3b downstream valve seat supports, 4 valve seat retainer ring, and 5
Alignment pin, 6a upstream valve seat sealing ring, 6b downstream valve seat sealing ring, 7 valve seat pressure rings, 7a radially fabrication hole, the axial work of 7b
Skill hole, 8 pretension stage clips；9 locking spacing rings, 10 positive stop lug boss, 11 pinning screws, 12 dust covers, 13a upstream side forward
Sealing ring, 13b downstream forward sealing ring, the reverse sealing ring of 14a upstream side, the reverse sealing ring in 14b downstream.
Detailed description of the invention
In the present embodiment, the structure of the LNG ultralow temperature top-loading ball valve valve seat of fine-tuning pretightning force and online dismounting is set to:
Seeing Fig. 1, in valve body 1, be positioned at the upstream side of spool spheroid 2 and downstream is symmetrical arranged valve seat supporting, symmetry sets
The valve seat supporting put is at the upstream valve seat supporting 3a of upstream side respectively and is in the downstream valve seat supporting 3b in downstream, at valve
Arranging alignment pin 5 between tail end face and the front end face of valve seat retainer ring 4 of seat supporting, valve seat retainer ring 4 spot welding is fixed on valve
In body 1.
As it is shown in figure 1, for the valve seat insert forming ring packing on valve seat supporting and the surface of spool spheroid 2, including on
Trip valve seat insert 6a and downstream valve seat sealing ring 6b, is inlaid in upstream valve seat supporting 3a's and downstream valve seat supporting 3b respectively
In strand limit, front end；In the periphery of valve seat supporting, the valve seat pressure ring 7 coordinated with valve seat support thread is set, at the tail of valve seat pressure ring 7
Pretension stage clip 8 is set between portion and valve body 1, rotates valve seat pressure ring 7 and valve seat supporting can be made to move in the axial direction.
See Fig. 2, the present embodiment arranges on valve seat pressure ring 7 radially fabrication hole 7a, is positioned at the valve at radially fabrication hole 7a place
Seat pressure ring circumferential location arranges a locking spacing ring 9, and one end of locking spacing ring 9 is butted on the positive stop lug boss connecting firmly on valve body
10, locking spacing ring 9 is provided with lock slots along valve seat pressure ring circumference, and is marked with location graduation, a pair pinning screw 11 is locked
Tight between valve seat pressure ring 7 and locking spacing ring 9, pinning screw 11 circumferential position in lock slots is adjustable, and can be according to adjustment
After location graduation correspondence calculate the pre compressed magnitude of pretension stage clip 8.
As in figure 2 it is shown, arrange axial fabrication hole 7b on valve seat pressure ring 7, utilize the axial fabrication hole 7b can be with rotary valve base pressure
Ring 7, so that valve seat Zhi Chengzuo linear axis is to movement.
Formed as it is shown in figure 1, the valve seat retainer ring 4 in the present embodiment extends towards valve seat supporting side on inner peripheral surface
It is in the dust cover 12 between valve seat retainer ring and valve seat supporting, to prevent dirt to be embedded in therebetween, causes valve seat to support nothing
Method action puts in place, and can therefore make spool spheroid to dismantle the most smoothly.
As illustrated in figures 3 a and 4, the present embodiment middle and upper reaches valve seat supporting 3a is set to two-stage staged step and seals, its
It is provided with upstream side forward sealing ring 13a between one-level step and valve body 1, is provided with between its second level step and valve body 1
Upstream side reverse sealing ring 14a, forms upstream side one-way sealing, makes upstream side be formed as single-piston effect valve seat.
As shown in Fig. 3 b and Fig. 5, the present embodiment middle and lower reaches valve seat supporting 3b be set to one-level step seal, its step surface with
Downstream forward sealing ring 13b and downstream reverse sealing ring 14b is set in back-to-back form between valve body 1, forms downstream
Side two way seal, makes downstream be formed as double-piston effect valve seat, can only upstream direction let out when realizing LNG medium superpressure with this
Leakage, and ensure the sealing property of whole valve.
During assembling, first that valve seat retainer ring is the tightest with valve body, argon arc welding spot welding is respectively used at two ends；Before loading spool spheroid, will
Valve seat pressure ring screws in valve seat supporting, makes valve seat supporting end face and valve seat pressure ring end face, and with preloading spring and each sealing ring one
And load in valve body, and utilize frock to strut two ends valve seat pressure ring, spool spheroid loads when keeping fully open position, then utilizes work
Dress rotary valve base pressure ring, makes valve seat supporting move axially and make its end face to protrude the end face of valve seat pressure ring, completes the tune of valve seat pressure ring
Lock-screw is utilized to carry out position locking after whole.
When valve seat pretension is enough than pressure, locking spacing ring can ensure that valve seat pressure ring does not loosens；When valve seat pretension is more inadequate than pressure
Time, turn valve seat pressure ring, compression further to preloading spring, increase pretension and carve than pressure, the rotation now can passed through on spacing ring
Degree, calculates the pre compressed magnitude that butterfly spring is increased, it is ensured that the reliable sealing property of valve seat.
Shown in Fig. 3 a and Fig. 3 b, when upstream valve seat and downstream valve seat all stand intact, when upstream or media pressure downstream are
During P1, lifting surface area A2 ＞ A1, difference in areas is X1, now under pressure medium effect, by upstream valve seat or downstream valve seat
Push spool spheroid to, it is achieved seal, block medium and pass through；
Shown in Fig. 5, when upstream valve seat has scratch, now dielectric leakage is to lumen, and pressure is P2, downstream valve seat now,
Lifting surface area A3 ＞ A4, difference in areas is X2, now under pressure medium effect, pushes downstream valve seat to spheroid, it is achieved seal,
The medium blocking leakage passes through downstream valve seat, it is achieved seal reliably；
Shown in Fig. 4, when spheroid from standard-sized sheet to fully closed, block media flow, now P1=P2, when valve lumen medium LNG sends out
Angerization, P2 sharply increases, much larger than P1, now, and upstream valve seat A5 ＜ A6, difference in areas is X3, under the effect of P2,
Upstream valve seat pushes away rapidly spheroid, and medium is released to line upstream, now downstream valve seat lifting surface area A3 ＞ A4, and difference in areas is
X2, under the effect of P2, pushes downstream valve seat to spheroid, it is achieved seal, and blocks medium and downstream leaks.
Due to the fact that formation upstream side one-way sealing valve seat, it is possible to block from upstream pressure medium, it is achieved seal；Work as lumen
During superpressure, medium acts on the power on one-way sealing valve seat can overcome the pretightning force of preloading spring, is pushed away by the valve seat of one-way sealing
From spool spheroid, it is achieved upstream releasing pressure automatically；Now, the valve seat of downstream two way seal under the effect of lumen medium to valve
Core spheroid compresses, it is achieved seal.Reach the upstream pressure release automatically of lumen superpressure, ensure that downstream does not has the mesh of dielectric leakage simultaneously
's.
The present invention is suitable to LNG ultralow temperature top-loading ball valve, assemble and keep in repair all can make valve not from pipeline dismounting in the case of
Realize, both reduced the gasification of LNG, pressure sharply increases, make valve and the probability of pipeline generation explosion danger, can cut again
Disconnected medium downstream leaks, and fundamentally ensures quality and the safety of LNG engineering.
Claims (4)
- The most fine-tuning pretightning force and the LNG ultralow temperature top-loading ball valve valve seat of online dismounting, is characterized in that:In valve body (1), it is positioned at the upstream side of spool spheroid (2) and downstream is symmetrical arranged valve seat supporting, described symmetrically arranged Valve seat supporting is at the upstream valve seat supporting of upstream side respectively and is in the downstream valve seat supporting in downstream, supports at described valve seat Tail end face and the front end face of valve seat retainer ring (4) between alignment pin (5) is set, the spot welding of described valve seat retainer ring (4) is fixed on institute State in valve body (1)；Before being inlaid in valve seat supporting at the valve seat insert of valve seat supporting with the surface formation ring packing of spool spheroid (2) In end strand limit；The valve seat pressure ring (7) coordinated with valve seat support thread is set in the periphery that described valve seat supports, at described valve seat pressure ring (7) between afterbody and valve body (1), pretension stage clip (8) is set, rotates described valve seat pressure ring (7) and valve seat can be made to be bearing in axis side Move up；Described valve seat pressure ring (7) arranges axial fabrication hole (7b), utilizes described axial fabrication hole (7b) that institute can be rotated State valve seat pressure ring (7).
- Fine-tuning pretightning force the most according to claim 1 and the LNG ultralow temperature top-loading ball valve valve seat of online dismounting, it is special Levy and be: radially fabrication hole (7a) is set on described valve seat pressure ring (7), is positioned at the valve seat pressure ring at described radial direction fabrication hole (7a) place Circumferential location arranges a locking spacing ring (9), and one end of described locking spacing ring (9) is butted on the positive stop lug boss connecting firmly on valve body (10), locking spacing ring (9) is provided with lock slots along valve seat pressure ring circumference, and has pinning screw (11) to be locked at described valve seat pressure Between ring (7) and locking spacing ring (9), described pinning screw (11) circumferential position in lock slots is adjustable.
- Fine-tuning pretightning force the most according to claim 1 and the LNG ultralow temperature top-loading ball valve valve seat of online dismounting, it is special Levy and be: described valve seat retainer ring (4) extends formation towards valve seat supporting side on inner peripheral surface and is in valve seat retainer ring and valve Dust cover (12) between seat supporting.
- Fine-tuning pretightning force the most according to claim 1 and the LNG ultralow temperature top-loading ball valve valve seat of online dismounting, it is special Levy and be:The supporting of described upstream valve seat is set to two-stage staged step and seals, and is provided with between its first order step and valve body (1) Trip side forward sealing ring (13a), is provided with the reverse sealing ring of upstream side (14a) between its second level step and valve body (1), is formed Upstream side one-way sealing；The supporting of described downstream valve seat is set to one-level step and seals, and arranges in back-to-back form between its step surface and valve body (1) Downstream forward sealing ring (13b) and downstream reverse sealing ring (14b), form downstream two way seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410336421.1A CN104089044B (en) | 2014-07-15 | 2014-07-15 | LNG ultra-low temperature top-mounting type ball valve seat capable of achieving pre-tightening force fine tuning and on-line disassembling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410336421.1A CN104089044B (en) | 2014-07-15 | 2014-07-15 | LNG ultra-low temperature top-mounting type ball valve seat capable of achieving pre-tightening force fine tuning and on-line disassembling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104089044A CN104089044A (en) | 2014-10-08 |
| CN104089044B true CN104089044B (en) | 2017-01-11 |
Family
ID=51636786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410336421.1A Active CN104089044B (en) | 2014-07-15 | 2014-07-15 | LNG ultra-low temperature top-mounting type ball valve seat capable of achieving pre-tightening force fine tuning and on-line disassembling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104089044B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523729A (en) * | 2015-09-10 | 2017-03-22 | 中国石油天然气集团公司 | Low-temperature top-assembling type fixed ball valve |
| KR102363000B1 (en) | 2015-11-10 | 2022-02-16 | 레르 리키드 쏘시에떼 아노님 뿌르 레드 에렉스뿔라따시옹 데 프로세데 조르즈 클로드 | Adaptation of press-fit valves for top-inserted valves in cryogenic service |
| RU2689869C1 (en) | 2015-11-10 | 2019-05-29 | Л'Эр Ликид, Сосьете Аноним Пур Л'Этюд Э Л'Эксплуатасьон Де Проседе Жорж Клод | Valve adaptation for valve with upper connector in cryogenic equipment |
| CN105782484A (en) * | 2016-04-19 | 2016-07-20 | 潘明尧 | LNG ultralow-temperature top installing type ball valve |
| CN106763876A (en) * | 2017-01-16 | 2017-05-31 | 慎江阀门有限公司 | A kind of ultralow temperature upper-mounting type ball valve |
| CN106763873A (en) * | 2017-03-17 | 2017-05-31 | 西诺威阀门控制（苏州）有限公司 | Orbit ball valve detachable valve seat |
| CN208010965U (en) * | 2018-01-18 | 2018-10-26 | 贺增华 | A kind of fixing ball valve |
| US11054044B2 (en) | 2018-02-14 | 2021-07-06 | Fisher Controls International Llc | Ball valve having a ball valve element with rotation control |
| US10544868B2 (en) * | 2018-02-14 | 2020-01-28 | Fisher Controls International Llc | Ball valve having an adjustable trim arrangement |
| CN108506513A (en) * | 2018-05-29 | 2018-09-07 | 天津祥嘉流体控制系统有限公司 | The LNG ultralow temperature top-loading ball valves for preventing valve base seal from sliding |
| CN108626428A (en) * | 2018-07-05 | 2018-10-09 | 杭州杭氧工装泵阀有限公司 | A kind of ultralow temperature upper-mounting type ball valve |
| EP3830456A4 (en) | 2018-08-03 | 2022-05-11 | Saint-Gobain Performance Plastics Corporation | Ball valve seal |
| CN109084022B (en) * | 2018-09-21 | 2021-03-23 | 上海沪东造船阀门有限公司 | Ultra-low temperature ball valve seal ring |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3348804A (en) * | 1964-06-10 | 1967-10-24 | Grove Valve & Regulator Co | Valve construction |
| JP2000028016A (en) * | 1998-07-09 | 2000-01-25 | Tokyo Gas Co Ltd | Seal structure of ball valve |
| NO332818B1 (en) * | 2011-11-01 | 2013-01-21 | Terje Haland As | Valve sealing device |
| CN102748497B (en) * | 2012-07-16 | 2014-08-06 | 圣博莱阀门有限公司 | Ultra-low temperature top-mounted type ball valve |
| CN102797868B (en) * | 2012-08-20 | 2013-11-20 | 天津祥嘉流体控制系统有限公司 | Top-mounted ultra-low temperature ball valve |
| CN203477422U (en) * | 2013-09-24 | 2014-03-12 | 宣达实业集团有限公司 | Top-installed type ball valve with adjustable valve seat |
| CN203703226U (en) * | 2013-12-18 | 2014-07-09 | 雷蒙德（北京）阀门制造有限公司 | Double-piston double-blocking hard sealing valve seat with metal C-shaped ring sealing structure |
| CN103742672B (en) * | 2014-01-27 | 2017-11-14 | 苏州纽威阀门股份有限公司 | top-loading ball valve |
-
2014
- 2014-07-15 CN CN201410336421.1A patent/CN104089044B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104089044A (en) | 2014-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104089044B (en) | LNG ultra-low temperature top-mounting type ball valve seat capable of achieving pre-tightening force fine tuning and on-line disassembling | |
| CN105782484A (en) | LNG ultralow-temperature top installing type ball valve | |
| CN102797868B (en) | Top-mounted ultra-low temperature ball valve | |
| CN103759031B (en) | Fixing ball valve | |
| CN204372217U (en) | Ultra-low temperature ball valve | |
| CN102705525B (en) | Top-entry low-temperature fixed ball valve | |
| CN105135011A (en) | Mechanical safety block valve device | |
| CN103982674A (en) | Top-mounting fixation ball valve | |
| CN101864917A (en) | Random and automatic regulating polished rod sealing device of oil pumping machine | |
| CN203477422U (en) | Top-installed type ball valve with adjustable valve seat | |
| CN205350424U (en) | High pressure ultra -low temperature upper assembling type ball valve composite seal disk seat | |
| CN210661524U (en) | Copious cooling axial flow type check valve structure with supporting guide shaft | |
| CN207830570U (en) | Butterfly valve | |
| CN112460281A (en) | Ultra-low temperature top-mounted ball valve | |
| CN112943968A (en) | Fixed inclined plane ball valve of cryrogenic upper assembling | |
| CN203686217U (en) | Fixed ball valve | |
| CN107763242A (en) | Low temperature upper-mounting type ball valve valve seat construction and its on-line maintenance method for dismounting | |
| CN209762310U (en) | Low-temperature upper-mounted inclined-plane ball valve | |
| CN210034439U (en) | Cryogenic butterfly valve for liquefied natural gas | |
| CN202719179U (en) | Ultra-low temperature ball valve | |
| CN106090380A (en) | Fluoroplastic all-liner corrugated tube valve special for chlorine | |
| CN204805221U (en) | A relief valve for colliery hydraulic system | |
| CN104989843A (en) | Ultralow-temperature metal hard seal floating ball valve | |
| CN203656251U (en) | Ball valve | |
| CN219796184U (en) | High-pressure hydrogen ball valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 230031 No. 888 Changjiang West Road, Shushan District, Anhui, Hefei Patentee after: HEFEI GENERAL MACHINERY RESEARCH INSTITUTE Co.,Ltd. Address before: 230031 No. 888 Changjiang West Road, Shushan District, Anhui, Hefei Patentee before: HEFEI GENERAL MACHINERY Research Institute |
|
| CP01 | Change in the name or title of a patent holder |