CN102748497A - Ultra-low temperature top-mounted type ball valve - Google Patents

Ultra-low temperature top-mounted type ball valve Download PDF

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Publication number
CN102748497A
CN102748497A CN2012102464406A CN201210246440A CN102748497A CN 102748497 A CN102748497 A CN 102748497A CN 2012102464406 A CN2012102464406 A CN 2012102464406A CN 201210246440 A CN201210246440 A CN 201210246440A CN 102748497 A CN102748497 A CN 102748497A
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China
Prior art keywords
valve
ring
ultra
low temperature
type ball
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Application number
CN2012102464406A
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CN102748497B (en
Inventor
卓桂朝
罗起飞
贾琦月
刘田园
卓华琛
蔡中鹏
朱佳俊
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SHENGBOLAI VALVE CO Ltd
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SHENGBOLAI VALVE CO Ltd
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Priority to CN201210246440.6A priority Critical patent/CN102748497B/en
Publication of CN102748497A publication Critical patent/CN102748497A/en
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Abstract

The invention discloses an ultra-low temperature top-mounted type ball valve, which comprises a valve body, an upper valve cover, a valve rod, a valve base, a valve base fixer, a disc-shaped spring, a pre-fastening nut, an anti-rotation base ring, a water drop plate and a spring energy storage sealing ring, wherein the valve base is arranged inside a valve base fixer groove; the spring energy storage sealing ring is installed at one side of the valve base fixer; a positioning pin is installed on the anti-rotation base ring; the positioning pin is matched with a pin hole on the valve base fixer; a plurality of installing process holes are formed in the circumference of the pre-fastening nut; the pre-fastening nut and the valve base fixer are connected by threads; an reversed pressure ring is arranged on the other side of the valve base fixer; and the diameter of the reversed pressure ring is larger than the diameter of the spring energy storage sealing ring. With the adoption of the ball valve, the requirements on pressure releasing under any working condition can be met.

Description

A kind of used at ultra-low temperature upper-mounting type ball valve
Technical field
The present invention relates to a kind of upper-mounting type ball valve, particularly a kind of used at ultra-low temperature upper-mounting type ball valve that is applicable to LNG project and other worst cold case.
Background technique
At present, common cryogenic ball valve all adopts side-mounted structure, and is used for the valve under the ultralow temperature operating mode; Take the method that is connected with pipeline welding mostly; In case leaking appears in valve, has only valve is cut off from pipeline, just can overhaul; Both increase maintenance cost, and brought no small loss for again client and enterprise.
On the common cryogenic ball valve valve seat fixture backpressure ring is not set, when central cavity pressure raises unusually, can causes the spring energy-storage seal ring to damage, thereby cause valve leak.
In addition, common cryogenic ball valve is indeterminate on the pressure release direction, and cavity pressure is to release from the upper reaches or release from downstream in promptly being not sure of, so strictly speaking, such valve does not all meet working condition requirement.
Summary of the invention
The technical problem that the present invention will solve provide a kind ofly be convenient to safeguard, valve seat is from the high a kind of used at ultra-low temperature upper-mounting type ball valve of pressure release, good seal performance and reliability.
For achieving the above object, technological scheme of the present invention is following:
A kind of used at ultra-low temperature upper-mounting type ball valve comprises valve body, bonnet, spheroid, valve rod, valve seat, valve seat fixture, belleville spring, pre-load nut, anti-rotation seat ring, draining board and spring energy-storage seal ring; Said valve seat is arranged in the valve seat fixture groove; Said spring energy-storage seal ring is contained on valve seat fixture one side; On the said anti-rotation seat ring locating stud is housed; Said locating stud cooperates with pin-and-hole on the valve seat fixture, and said pre-load nut circumference is provided with a plurality of installing technological holes, and pre-load nut adopts with the valve seat fixture and is threaded; Said valve seat fixture opposite side is provided with the backpressure ring, and the diameter of said backpressure ring is greater than the diameter of said spring energy-storage seal ring.
Preferably, in the said used at ultra-low temperature upper-mounting type ball valve anti-loosing slice is housed, said anti-loosing slice is provided with screw, and said screw can insert in the pre-load nut auxiliary hole.
Preferably, said used at ultra-low temperature upper-mounting type ball valve also comprises packing seal structure, and said packing seal structure is placed in the top of bonnet.
Preferably, said packing seal structure is made up of filler gland, Gland and filler; Said filler gland is connected with Gland, and said filler is connected with the filler gland.
Preferably, the bottom of said filler is provided with the lip seal circle.
Through technique scheme, the invention has the beneficial effects as follows:
The present invention is provided with the backpressure ring on valve seat fixture opposite side, and the diameter of backpressure ring is greater than the diameter of said spring energy-storage seal ring; Can know that by piston effect the thrust that acts on the backpressure ring is bigger than the thrust that acts on the spring energy-storage seal ring, thus in the middle of cavity pressure when raising unusually, the pressure release direction is always towards the side that the backpressure ring is housed; Therefore, the present invention can satisfy the pressure release requirement of any operating mode.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technological scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a backpressure ring enlarged view;
Fig. 3 is the pre-load nut structural drawing;
Fig. 4 is the packing seal structure schematic representation.
The numeral corresponding part title represented among the figure with letter:
1, valve body 2, spheroid 3, pre-load nut 4, spring seat 5, valve seat fixture 6, spring energy-storage seal ring 7, bonnet 8, draining board 9, lip seal circle 10, filler 11, hold-down grid 12, filler gland 13, valve rod 14, screw 15, anti-loosing slice 16, valve seat 17, backpressure ring 18, locating stud 19, anti-rotation seat ring 20, belleville spring
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with concrete diagram, further set forth the present invention.
To shown in Figure 4, a kind of used at ultra-low temperature upper-mounting type ball valve of the present invention comprises valve body 1, bonnet 7, spheroid 2, valve rod 13, valve seat 16, valve seat fixture 5, belleville spring 20, pre-load nut 3, anti-rotation seat ring 19, draining board 8 and spring energy-storage seal ring 6 referring to Fig. 1.
Valve seat 16 of the present invention is arranged in valve seat fixture 5 grooves; Spring energy-storage seal ring 6 is placed on the side of valve seat fixture 5; Locating stud 18 is housed on the anti-rotation seat ring 19, and locating stud 18 cooperates with pin-and-hole on the valve seat fixture 5, and pre-load nut 3 circumference are provided with a plurality of installing technological holes.
Valve rod is connected with transmitting torque through flat side with spheroid, and the torsional interaction that provides when handle or actuator can make valve rod 13 drive spheroids 2 rotations, thereby change the keying function that circulation area realizes valve in 13 last times of valve rod.
Pre-load nut 3 of the present invention adopts with valve seat fixture 5 and is threaded, and pre-load nut 3 circumference are provided with auxiliary hole, during dismounting; Can extracting tool insertion process hole be made pre-load nut 3 rotations, simultaneously; Under the drive of pre-load nut 3, valve seat fixture 5 will move to the side away from spheroid; When importing and exporting distance between the valve seat fixture 5 greater than the spheroid width, can spheroid be taken out in valve pocket, remaining parts also can be taken out successively.
Valve seat fixture 5 opposite sides of the present invention are provided with backpressure ring 17; And the diameter of backpressure ring 17 is greater than spring energy-storage seal ring 6 diameters that are arranged on the side valve seat fixture 5; Can know by piston effect; The thrust that acts on the backpressure ring 17 is bigger than the thrust that acts on the spring energy-storage seal ring 6, thus in the middle of cavity pressure when raising unusually, the pressure release direction is always towards the side that backpressure ring 17 is housed; Therefore, the present invention can satisfy the pressure release requirement of any operating mode.
Anti-loosing slice 15 is housed in the valve pocket of the present invention, and anti-loosing slice 15 is provided with screw 14, with playing locking effect in the auxiliary hole on screw 14 insertion pre-load nuts 3 circumference; Can effectively prevent to cause valve seat 16 pretensions than drops, guarantee the reliable sealing of valve owing to pre-load nut 3 relaxes.
The present invention also is provided with a packing seal structure, and packing seal structure is placed in the top of bonnet 7, and packing seal structure is made up of filler gland 12, hold-down grid 11 and filler 10; Filler gland 12 is connected with hold-down grid 11, and filler 10 is connected with filler gland 12; Externally under the heat transfer process of environment to bonnet 7, be penetrated into bonnet 7 inner cryogenic medias and will absorb heat, its temperature will raise, so the filler temperature is remained on more than 0 ℃.
Filler of the present invention 10 bottoms also are provided with lip seal circle 9 one, and this lip seal circle 9 is under the effect of pressure medium, and its two lateral lips limit will be to radially expansion; And reach the primary seal of filler 10, and blocked the possibility that medium contacts with filler 10, further protected filler 10 not receive the influence of cryogenic media; Simultaneously; Reduce valve torque, improved the valve seal performance, increased valve working life.
The present invention has good seal performance, long lifetime, and advantage such as beautiful shape.
More than show and described basic principle of the present invention and major character and advantage of the present invention.The technician of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.

Claims (5)

1. a used at ultra-low temperature upper-mounting type ball valve comprises valve body, bonnet, spheroid, valve rod, valve seat, valve seat fixture, belleville spring, pre-load nut, anti-rotation seat ring, draining board and spring energy-storage seal ring; Said valve seat is arranged in the valve seat fixture groove; Said spring energy-storage seal ring is contained on valve seat fixture one side; On the said anti-rotation seat ring locating stud is housed; Said locating stud cooperates with pin-and-hole on the valve seat fixture, and said pre-load nut circumference is provided with a plurality of installing technological holes, and pre-load nut adopts with the valve seat fixture and is threaded; It is characterized in that said valve seat fixture opposite side is provided with the backpressure ring, the diameter of said backpressure ring is greater than the diameter of said spring energy-storage seal ring.
2. a kind of used at ultra-low temperature upper-mounting type ball valve according to claim 1 is characterized in that: in the said used at ultra-low temperature upper-mounting type ball valve anti-loosing slice is housed, said anti-loosing slice is provided with screw, and said screw can insert in the pre-load nut auxiliary hole.
3. a kind of used at ultra-low temperature upper-mounting type ball valve according to claim 1 is characterized in that: said used at ultra-low temperature upper-mounting type ball valve also comprises packing seal structure, and said packing seal structure is placed in the top of bonnet.
4. a kind of used at ultra-low temperature upper-mounting type ball valve according to claim 3, it is characterized in that: said packing seal structure is made up of filler gland, Gland and filler; Said filler gland is connected with Gland, and said filler is connected with the filler gland.
5. a kind of used at ultra-low temperature upper-mounting type ball valve according to claim 4, it is characterized in that: the bottom of said filler is provided with the lip seal circle.
CN201210246440.6A 2012-07-16 2012-07-16 Ultra-low temperature top-mounted type ball valve Active CN102748497B (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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CN102748497B CN102748497B (en) 2014-08-06

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103511653A (en) * 2013-10-24 2014-01-15 天津百利展发集团有限公司 Ultra-low temperature plate valve
CN103742672A (en) * 2014-01-27 2014-04-23 苏州纽威阀门股份有限公司 Top-mounted ball valve
CN103759038A (en) * 2014-01-27 2014-04-30 苏州纽威阀门股份有限公司 Top-installed type ball valve
CN103759067A (en) * 2014-01-22 2014-04-30 大连大高阀门股份有限公司 LNG multi-seal structure capable of guaranteeing zero leakage at position of valve rod under ultra-low temperature working condition
CN104089044A (en) * 2014-07-15 2014-10-08 合肥通用机械研究院 LNG ultra-low temperature top-mounting type ball valve seat capable of achieving pre-tightening force fine tuning and on-line disassembling
CN104482244A (en) * 2014-12-24 2015-04-01 四川精控阀门制造有限公司 Bidirectional sealing valve seat structure and ultralow temperature top-assembled fixed ball valve
CN104565421A (en) * 2013-10-29 2015-04-29 上海上冶阀门制造有限公司 Double-power two-way composite sealing type low-temperature ball valve
CN105042106A (en) * 2015-07-21 2015-11-11 上海凯工阀门有限公司 Upper-mounted ultra-low temperature ball valve
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
CN111173952A (en) * 2020-01-18 2020-05-19 上海亚奥阀门有限公司 Forged steel bidirectional hard sealing floating ultralow temperature ball valve
US11448321B2 (en) 2018-08-03 2022-09-20 Saint-Gobain Performance Plastics Corporation Ball valve seal

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62159870A (en) * 1985-12-30 1987-07-15 ジヨイ　マニユフアクチユアリング　カンパニ− Ball valve
CN201306465Y (en) * 2008-10-30 2009-09-09 大连大高阀门有限公司 Up-loading ball valve of handling system for high temperature gas cooled reactor fuel at first nuclear level.
CN101737520A (en) * 2009-12-25 2010-06-16 昆山维萨阀门有限公司 Ultra-low temperature ball valve
CN201517633U (en) * 2009-10-30 2010-06-30 苏州纽威阀门有限公司 Ultra-low temperature ball valve
CN201588966U (en) * 2009-12-25 2010-09-22 昆山维萨阀门有限公司 Ultralow temperature ball valve
CN201651402U (en) * 2010-05-12 2010-11-24 浙江宏明阀门有限公司 Fixed ball valve with long transportation pipeline
CN201715015U (en) * 2010-07-16 2011-01-19 凯特姆球阀制造(四川)有限公司 Metal-seal fixed ball valve
CN102094992A (en) * 2011-03-18 2011-06-15 温州科赛阀门有限公司 Fixed ball valve for top assembling
CN201963936U (en) * 2011-03-18 2011-09-07 温州科赛阀门有限公司 Top-mounted fixed ball valve
CN102242812A (en) * 2010-05-14 2011-11-16 蔡毅 Upper-mounting-type hydraulic ball valve
CN202756653U (en) * 2012-07-16 2013-02-27 圣博莱阀门有限公司 Ultralow temperature jacket type ball valve

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62159870A (en) * 1985-12-30 1987-07-15 ジヨイ　マニユフアクチユアリング　カンパニ− Ball valve
CN201306465Y (en) * 2008-10-30 2009-09-09 大连大高阀门有限公司 Up-loading ball valve of handling system for high temperature gas cooled reactor fuel at first nuclear level.
CN201517633U (en) * 2009-10-30 2010-06-30 苏州纽威阀门有限公司 Ultra-low temperature ball valve
CN101737520A (en) * 2009-12-25 2010-06-16 昆山维萨阀门有限公司 Ultra-low temperature ball valve
CN201588966U (en) * 2009-12-25 2010-09-22 昆山维萨阀门有限公司 Ultralow temperature ball valve
CN201651402U (en) * 2010-05-12 2010-11-24 浙江宏明阀门有限公司 Fixed ball valve with long transportation pipeline
CN102242812A (en) * 2010-05-14 2011-11-16 蔡毅 Upper-mounting-type hydraulic ball valve
CN201715015U (en) * 2010-07-16 2011-01-19 凯特姆球阀制造(四川)有限公司 Metal-seal fixed ball valve
CN102094992A (en) * 2011-03-18 2011-06-15 温州科赛阀门有限公司 Fixed ball valve for top assembling
CN201963936U (en) * 2011-03-18 2011-09-07 温州科赛阀门有限公司 Top-mounted fixed ball valve
CN202756653U (en) * 2012-07-16 2013-02-27 圣博莱阀门有限公司 Ultralow temperature jacket type ball valve

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103511653A (en) * 2013-10-24 2014-01-15 天津百利展发集团有限公司 Ultra-low temperature plate valve
CN103511653B (en) * 2013-10-24 2015-11-18 天津百利展发集团有限公司 Ultra-low temperature plate valve
CN104565421A (en) * 2013-10-29 2015-04-29 上海上冶阀门制造有限公司 Double-power two-way composite sealing type low-temperature ball valve
CN103759067A (en) * 2014-01-22 2014-04-30 大连大高阀门股份有限公司 LNG multi-seal structure capable of guaranteeing zero leakage at position of valve rod under ultra-low temperature working condition
CN103759038A (en) * 2014-01-27 2014-04-30 苏州纽威阀门股份有限公司 Top-installed type ball valve
CN103742672A (en) * 2014-01-27 2014-04-23 苏州纽威阀门股份有限公司 Top-mounted ball valve
CN104089044A (en) * 2014-07-15 2014-10-08 合肥通用机械研究院 LNG ultra-low temperature top-mounting type ball valve seat capable of achieving pre-tightening force fine tuning and on-line disassembling
CN104482244A (en) * 2014-12-24 2015-04-01 四川精控阀门制造有限公司 Bidirectional sealing valve seat structure and ultralow temperature top-assembled fixed ball valve
CN104482244B (en) * 2014-12-24 2017-11-21 四川精控阀门制造有限公司 Formula fixing ball valve is filled on two way seal valve seat construction and ultralow temperature
CN105042106A (en) * 2015-07-21 2015-11-11 上海凯工阀门有限公司 Upper-mounted ultra-low temperature ball valve
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
US11448321B2 (en) 2018-08-03 2022-09-20 Saint-Gobain Performance Plastics Corporation Ball valve seal
CN111173952A (en) * 2020-01-18 2020-05-19 上海亚奥阀门有限公司 Forged steel bidirectional hard sealing floating ultralow temperature ball valve

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