CN205908797U - Super low temperature ball valve valve seat seal structure - Google Patents
Super low temperature ball valve valve seat seal structure Download PDFInfo
- Publication number
- CN205908797U CN205908797U CN201620902847.3U CN201620902847U CN205908797U CN 205908797 U CN205908797 U CN 205908797U CN 201620902847 U CN201620902847 U CN 201620902847U CN 205908797 U CN205908797 U CN 205908797U
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- Prior art keywords
- valve
- low temperature
- valve body
- temperature ball
- valve seat
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Abstract
Super low temperature ball valve valve seat seal structure. The disk seat movive seal of mainly having solved present super low temperature ball valve is unstable, at the valve open lip circle life that can wear and tear when closing, finally reduces valve life's problem. The utility model provides a super low temperature ball valve valve seat seal structure is equipped with sealed complex spheroid and disk seat in its valve body, disk seat circumference edge is equipped with flexible film portion, and the disk seat passes through film portion axial telescopic and installs on the valve body and film portion and body seals cooperation, and the disk seat relies on a spring lock ring to press on self elastic medium plinth and realizes the sealed, with low costs, sealed reliable of spheroid and disk seat to the spheroid, easily realizes the mass production.
Description
Technical field
This utility model is related to ball valve field and in particular to ultra-low temperature ball valve valve base sealing structure.
Background technology
Along with the growth in lng market, its liquefaction, transport and storage arrange standby, revaporization equipment, and such as liquefaction plant, lng receives
Stand, lng tank car, lng cargo ship (import lng), lng gas holder station etc. are developed rapidly, the low-temperature liquefaction being applied to lng is natural
Air valve demand is in fast-developing trend.Comprehensive various statistics show, national cryogenic valve annual requirement in 2015
About 35000, count more than 28,000 ten thousand dollars.Its market scenario is very good.International lng Subzero valve market potential is bigger simultaneously,
The annual needs having multi-billion dollar.
The lip-shaped ring service life but the valve seat of current ultra-low temperature ball valve can wear and tear in valve opening with when closing, leads to
Reduce valve service life.
Utility model content
In order to overcome the shortcomings of background technology, this utility model provides ultra-low temperature ball valve valve base sealing structure, mainly solves
The valve seat of current ultra-low temperature ball valve can wear and tear in valve opening with when closing lip-shaped ring service life, and leading to reduce valve makes
Problem with the life-span.
This utility model be the technical scheme is that
Ultra-low temperature ball valve valve base sealing structure, including valve body, is provided with spheroid and the valve seat of sealing cooperation, institute in described valve body
State valve seat circumferential edge and be provided with resilient film section, described valve seat is arranged on described valve body by film section is axially telescopic
Upper and described film section is coordinated with described valve seal.
Also include the fastening assembly for being pressed on described film section on described valve body, described fastening assembly includes pressing plate
Circle and trip bolt, described pressure plate loop is arranged on described valve body by trip bolt, and described pressure plate loop is by described film section end
Portion's top pressure is on described valve body.
Also include telescopic elastic pusher, described elastic pusher between described valve seat and described valve body and with described
Valve seat back compresses cooperation.
Described elastic pusher is connected with described valve body by elastic component, deposits between described elastic pusher and described valve body
In the first gap.
Described elastic component is spring.
It is additionally provided with sealing ring group on described film section and the described contact surface of valve seat.
Described sealing ring group includes the pctfe pad located at inner ring and the Graphite pad located at outer ring.
Described valve seat also includes pedestal portion, being provided between described elastic pusher inner circumferential wall and described pedestal portion peripheral outer wall
Second gap.
The beneficial effects of the utility model are: this utility model provides ultra-low temperature ball valve valve base sealing structure, in its valve body
It is provided with spheroid and the valve seat of sealing cooperation, valve seat circumferential edge is provided with resilient film section, and valve seat axially may be used by film section
Flexible is arranged on valve body and film section and valve seal cooperation, and valve seat relies on spring supporting circle pressure on the basis of natural resiliency
Realize the sealing of spheroid and valve seat, low cost to spheroid, it is easy to accomplish mass production.
Brief description
Fig. 1 is the cross-sectional schematic of one embodiment of this utility model.
Fig. 2 is the schematic diagram of the valve seat of one embodiment of this utility model.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings: as illustrated, ultra-low temperature ball valve valve base sealing structure,
Including valve body 1, it is provided with spheroid 2 and the valve seat 3 of sealing cooperation in described valve body 1, described valve seat 3 circumferential edge is provided with resilient
Film section 31, described valve seat 3 is arranged on described valve body 1 and described film section 31 and institute by film section 31 is axially telescopic
State valve body 1 sealing cooperation.This utility model provides ultra-low temperature ball valve valve base sealing structure, is provided with the ball of sealing cooperation in its valve body
Body and valve seat, valve seat circumferential edge is provided with resilient film section, and valve seat is arranged on valve body by film section is axially telescopic
Upper and film section is coordinated with valve seal, and valve seat relies on spring supporting circle to press to spheroid and realize spheroid on the basis of natural resiliency
With the sealing of valve seat, low cost, it is easy to accomplish mass production.Rely on the two seals pad between valve seat and valve body, pass through
Pressure plate loop compression realizes sealing, and valve seat do not move back and forth, it is to avoid the abrasion of sealing member.This valve seat relies on valve seat itself
Deformation, in addition spring pre-tightening realize the sealing of spheroid and valve seat, the sealing between valve seat and valve body relies on the compression reality of pressure plate loop
Now seal, end seal be converted to by radial seal, this kind of sealing easy to process it is easy to mass production, and can be not against
Lip-type packing and realize the sealing between valve seat and valve body, greatly reduce cost.This valve seat is on original metal foundation
Process a metal foil diaphragm that deformation enough can be provided, in the case that diaphragm end is compressed, valve seat in side
Itself can produce certain deflection, therefore achieve the static sealing between valve seat and valve body, in turn ensure that valve seat can
Produce and move.
In the present embodiment, as illustrated, also including the fastening for being pressed on described film section 31 on described valve body 1
Assembly, described fastening assembly includes pressure plate loop 321 and trip bolt 322, and described pressure plate loop 321 is installed by trip bolt 322
On described valve body 1, described pressure plate loop 321 is by described film section 31 end top pressure on described valve body 1.Pacified by securing member
Dress, easy for installation, it is easy to seal.
In the present embodiment, as illustrated, also including telescopic elastic pusher 5, described elastic pusher 5 is located at described valve
Cooperation is compressed between seat 3 and described valve body 1 and with described valve seat 3 back.Compensation sealing, sealing effectiveness are realized by elastic pusher
Good.
In the present embodiment, as illustrated, described elastic pusher 5 is connected with described valve body 1 by elastic component 51, described bullet
There is the first gap 52 in property between push pedal 5 and described valve body 1.There is certain interval between spring supporting circle 6 and valve body 8, come
Ensure that the reciprocal thin tail sheep of valve seat moves.Sealing member will not be damaged and achieve compensation sealing, structure is simple, and using effect is good.
In the present embodiment, as illustrated, described elastic component 51 is spring.May be otherwise using other elastic components, than
As disc spring, shell fragment etc., spring cost is relatively low, is easy to obtain.
In the present embodiment, as illustrated, being additionally provided with sealing ring group on described film section 31 and described valve seat 3 contact surface
33.
In the present embodiment, as illustrated, described sealing ring group 33 include located at inner ring pctfe pad 331 and located at
The Graphite pad 332 of outer ring.It is pctfe gasket seal together, be graphite sealing gasket together, fine by two gasket seals
The static sealing achieving before valve seat and valve body, good sealing effect.
In the present embodiment, as illustrated, described valve seat 3 also includes pedestal portion 34, described elastic pusher 5 inner circumferential wall with
It is provided with the second gap 55 between described pedestal portion 34 peripheral outer wall.Certain sky is provided when valve seat radial direction is subjected to displacement
Between, reduce abrasion, increase service life.
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 (8)
1. ultra-low temperature ball valve valve base sealing structure, including valve body (1), be provided with described valve body (1) sealing cooperation spheroid (2) and
Valve seat (3) it is characterised in that: described valve seat (3) circumferential edge is provided with resilient film section (31), and described valve seat (3) is passed through
Film section (31) is axially telescopic to be arranged on that described valve body (1) is upper and described film section (31) is sealed with described valve body (1) and joins
Close.
2. ultra-low temperature ball valve valve base sealing structure according to claim 1 it is characterised in that: also include for will be described thin
Film portion (31) is pressed on the fastening assembly on described valve body (1), and described fastening assembly includes pressure plate loop (321) and trip bolt
(322), described pressure plate loop (321) is arranged on described valve body (1) by trip bolt (322), and described pressure plate loop (321) is by institute
State film section (31) end top pressure on described valve body (1).
3. ultra-low temperature ball valve valve base sealing structure according to claim 1 it is characterised in that: also include telescopic elasticity
Push pedal (5), described elastic pusher (5) is supported between described valve seat (3) and described valve body (1) and with described valve seat (3) back
Press-fit.
4. ultra-low temperature ball valve valve base sealing structure according to claim 3 it is characterised in that: described elastic pusher (5) lead to
Cross elastic component (51) to be connected with described valve body (1), exist between first between described elastic pusher (5) and described valve body (1)
Gap (52).
5. ultra-low temperature ball valve valve base sealing structure according to claim 4 it is characterised in that: described elastic component (51) be bullet
Spring.
6. ultra-low temperature ball valve valve base sealing structure according to claim 2 it is characterised in that: described film section (31) and institute
State and sealing ring group (33) is additionally provided with valve seat (3) contact surface.
7. ultra-low temperature ball valve valve base sealing structure according to claim 6 it is characterised in that: described sealing ring group (33) bag
Include the pctfe pad (331) located at inner ring and the Graphite pad (332) located at outer ring.
8. ultra-low temperature ball valve valve base sealing structure according to claim 3 it is characterised in that: described valve seat (3) also includes
Pedestal portion (34), is provided with the second gap between described elastic pusher (5) inner circumferential wall and described pedestal portion (34) peripheral outer wall
(55).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620902847.3U CN205908797U (en) | 2016-08-19 | 2016-08-19 | Super low temperature ball valve valve seat seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620902847.3U CN205908797U (en) | 2016-08-19 | 2016-08-19 | Super low temperature ball valve valve seat seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205908797U true CN205908797U (en) | 2017-01-25 |
Family
ID=57800878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620902847.3U Active CN205908797U (en) | 2016-08-19 | 2016-08-19 | Super low temperature ball valve valve seat seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205908797U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151574A (en) * | 2016-08-19 | 2016-11-23 | 方正阀门集团有限公司 | Ultra-low temperature ball valve valve base sealing structure |
-
2016
- 2016-08-19 CN CN201620902847.3U patent/CN205908797U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151574A (en) * | 2016-08-19 | 2016-11-23 | 方正阀门集团有限公司 | Ultra-low temperature ball valve valve base sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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. |
|
| CP03 | Change of name, title or address |