CN109506006A - A kind of valve seat sealing mechanism suitable for worst cold case - Google Patents
A kind of valve seat sealing mechanism suitable for worst cold case Download PDFInfo
- Publication number
- CN109506006A CN109506006A CN201811494683.5A CN201811494683A CN109506006A CN 109506006 A CN109506006 A CN 109506006A CN 201811494683 A CN201811494683 A CN 201811494683A CN 109506006 A CN109506006 A CN 109506006A
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- China
- Prior art keywords
- valve seat
- pressing ring
- lip
- main body
- valve
- 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.)
- Pending
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- 238000007789 sealing Methods 0.000 title claims abstract description 71
- 230000007246 mechanism Effects 0.000 title claims abstract description 23
- 238000003825 pressing Methods 0.000 claims abstract description 103
- 238000012856 packing Methods 0.000 claims abstract description 56
- 238000009434 installation Methods 0.000 claims description 22
- 230000008602 contraction Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 description 1
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- F16K5/08—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
-
- 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
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The invention discloses a kind of valve seat sealing mechanisms suitable for worst cold case, lip-type packing is provided between valve seat and valve body, support spring circle is equipped between two lips of the lip-type packing, pressing ring is additionally provided between the valve body and valve seat, preloading spring is equipped between the pressing ring and the valve body, the preloading spring driving pressing ring resists valve seat and support spring circle.The beneficial effects of the invention are as follows one side, and valve seat can be made closely to stick on sphere, make sphere and valve seat that there is good sealing performance, on the other hand, active force is applied to support spring circle by pressing ring, deformation occurs under the extruding of support spring circle struts lip for lip-type packing, to lip-type packing with valve body and valve seat are closer sticks together, even if the lip of lip-type packing has a degree of contraction at quite low temperatures, it still is able to ensure the reliable sealing of lip-type packing, to make that there is better seal performance between valve seat and valve body.
Description
Technical field
It is the present invention relates to valve field, in particular to a kind of close using the valve seat suitable for worst cold case of lip-type packing
Sealing mechanism.
Background technique
Stop valve of the ball valve as pipe-line system is widely used in all types of industries such as petroleum, chemical industry, electric power, urban construction field,
Small with fluid resistance, good seal performance switchs the advantages that rapid.In use, the sphere of ball valve does not move, only
It rotates, sphere, which is rotated by 90 °, can open or close pipeline.The sphere of fixing ball valve generally passes through support shaft or support up and down
Plate is supported, and by applying the medium power in spring force and pipeline behind in valve seat, valve seat is enable closely to be fitted in
On sphere, to reach the reliable sealing of sealing surface of seat.
Currently, conventional ball valve generallys use rubber o-ring and is sealed to valve seat and valve body, but RUBBER O at low temperature
Type circle can crack or follow the string, and can not effectively seal.Therefore it cannot be used between the valve seat and valve body of low temperature fixing ball valve O-shaped
Circle is sealed, but is sealed using lip-type packing, in -196 DEG C of operating condition, although in lip-type packing
Setting spring is supported, but the lip of lip-type packing has very big contraction at low temperature, lip-type packing and valve at this time
Seat and the magnitude of interference of valve body mating surface can greatly reduce, it is difficult to ensure that the reliable sealing of lip-type packing.In addition, lip-type packing
Elasticity reduces at low temperature, and material is hardened, and is also unfavorable for the sealing of lip-type packing.In order to make lip-type packing in lower temperature
The lower reliable sealing of degree, is attempted to the magnitude of interference by increasing valve seat, valve body and lip-type packing mating surface and asks to solve sealing
Topic, but the magnitude of interference cooperated will lead to greatly very much the difficulty of lip-type packing installation, or even can damage lip packing during installation
Therefore circle for the ball valve of very low temperature, is designed, it is difficult to ensure that valve seat and valve using conventional lip-type packing sealing mechanism
Reliable sealing between body.
Summary of the invention
The technical problem to be solved in the present invention is that it is close to provide a kind of valve seat suitable for worst cold case that sealing effect is good
Sealing mechanism.
In order to solve the above technical problems, the present invention is achieved by the following technical solutions: one kind being suitable for worst cold case
Valve seat sealing mechanism, including valve body and be mounted on the intracorporal sphere of valve, the valve with ball seal cooperation be also equipped in valve body
Seat, is provided with sealing ring installation cavity between the valve seat and valve body, lip-type packing, the lip are equipped in the sealing ring installation cavity
It is equipped with support spring circle between the lip of shape sealing ring, pressing ring is additionally provided between the valve body and valve seat, the pressing ring includes
Pressing ring main body and the pressing ring lug boss for being fixedly installed on pressing ring main body and corresponding lip position, correspond to close between valve seat and valve body
The outer end of seal installation cavity is provided with and communicated with pressing ring main body slid chamber, and the pressing ring main body sliding is set to the sliding of pressing ring main body
The inner wall of intracavitary and pressing ring main body pressing ring main body slid chamber corresponding with valve seat limits cooperation, the pressing ring main body and the valve body it
Between be equipped with preloading spring, preloading spring driving pressing ring main body is pressed on valve seat and corresponds on the inner wall of pressing ring main body slid chamber, pressing ring
Lug boss extend into sealing ring installation cavity and with support spring circle press fit, lip-type packing struts composition by support spring circle
Sealing cooperation between valve body and valve seat.
By using above-mentioned technical proposal, pressing ring lug boss is arranged between the lip of lip-type packing and and lip packing
Support spring circle in circle offsets, and the elastic force of preloading spring acts in pressing ring main body, on the one hand the elastic force of spring can make valve
Seat closely sticks on sphere, makes sphere and valve seat that there is good sealing performance on the other hand to pass through pressing ring lug boss pair
Support spring circle applies active force, and deformation occurs under the extruding of support spring circle struts lip for lip-type packing, thus lip
Shape sealing ring with valve body and valve seat are closer sticks together, even if the lip of lip-type packing has one at quite low temperatures
The contraction for determining degree still is able to ensure the reliable sealing of lip-type packing, to make to have between valve seat and valve body better
Sealing performance.Make the elastic force of preloading spring by pressing ring subjective role on valve seat by the way that pressing ring main body slid chamber is arranged, then leads to
It crosses pressing ring lug boss and resists support spring circle, the sliding main body of pressing ring moves the skidding distance of the inner wall control pressing ring main body of chamber, prevents from making
It is excessive with the pressure on support spring circle and damage support spring circle.Ordinary skill is using increase valve body and valve seat assembly
Magnitude of interference improve leakproofness, this damages lip-type packing when will lead to lip-type packing difficult to install and installation, passes through this
The leakproofness between the convenience and valve seat and valve body of installation has been coordinated in the setting of invention well.
Be further arranged to: the valve body is equipped with the first limit terrace, and the valve seat is equipped with and the first limit terrace
The the second limit terrace to offset, is equipped with the first fit-up gap between the first limit terrace and the second limit terrace.
By using above-mentioned technical proposal, fit-up gap, which is arranged, between valve seat and valve body prevents valve stuck.
Be further arranged to: the pressing ring main body abuts to pressing ring main body when valve seat corresponds to the inner wall of pressing ring main body slid chamber
Outer wall pressing ring main body slid chamber corresponding with valve body outer wall be equipped with the second fit-up gap, second fit-up gap be greater than first
Fit-up gap.
By using above-mentioned technical proposal, make sliding displacement of the pressing ring main body in pressing ring main body slid chamber less than the first dress
With gap, to ensure better sealing between valve seat and valve body, it is also prevented from preloading spring and is destroyed.
It is further arranged to: when the pressing ring main body abuts to valve seat and corresponds to the inner wall of pressing ring main body slid chamber, the pressure
It encloses lug boss and squeezes the generation deformation of support spring circle, deformation quantity is the 1/5 to 1/3 of the interior diameter of support spring circle.
By using above-mentioned technical proposal, pressing ring main body is abutted to when being inner wall that valve seat corresponds to pressing ring main body slid chamber,
For support spring circle by maximum force, deformation quantity is the 1/5 to 1/3 of the interior diameter of support spring circle, and the design can protect
Card support spring circle not will receive the excessive active force of pressing ring lug boss, and present invention design can control lip-type packing lip
It struts, has both guaranteed the reliable sealing of lip-type packing circle at low temperature, also can be avoided lip-type packing circle by excessive outer
Power is acted on and is damaged.
It is further arranged to: being equipped with gap between the pressing ring lug boss and the upper wall and lower wall of sealing ring installation cavity.
By using above-mentioned technical proposal, be arranged gap be more convenient for pressing ring lug boss under the active force of preloading spring to valve
Seat squeezes, while gap can also provide accommodation space to the deformation of lip-type packing.
Be further arranged to: the pressing ring lug boss edge gradually becomes smaller towards the direction of support spring circle.
By using above-mentioned technical proposal, due to gradually becoming smaller towards the pressing ring lug boss of support spring circle, then pressing ring is convex
The portion of rising and the contact surface of support spring circle become smaller, to increase the pressure that pressing ring lug boss acts on support spring circle, make lip
Shape sealing ring is easier to be squeezed, and deformation occurs.
Be further arranged to: the valve body is equipped with the spring cavity plugged for the preloading spring.
By using above-mentioned technical proposal, preloading spring is limited, prevents preloading spring from falling off from valve body.
It is further arranged to: being interference fitted between the lip-type packing and valve seat and valve body.
By using above-mentioned technical proposal, magnitude of interference, which is arranged, makes lip-type packing be installed between valve seat and valve body rear formation
Sealing.
Be further arranged to: the support spring circle is end to end helical spring.
By using above-mentioned technical proposal, helical spring manufacture is easy, and compact-sized, capacity usage ratio is high.
It is further arranged to: a kind of fixed ball of the low temperature including the described in any item valve seat sealing mechanisms of claim 1-9
Valve.
By using above-mentioned technical proposal, low temperature fixing ball valve is set to be easy assembly sealing effect again good.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the present embodiment；
Fig. 2 is the enlarged drawing in Fig. 1 at A；
Fig. 3 is the schematic diagram at sealing ring installation cavity position in the present embodiment；
In figure: 1, valve body；101, the first limit terrace；2, valve seat；201, the second limit terrace；3, lip-type packing；301, it props up
Support spring ring；401, pressing ring main body；402, pressing ring lug boss；5, sphere；6, preloading spring；7, sealing ring installation cavity；8, pressing ring
Main body slid chamber；801, valve seat corresponds to the inner wall of pressing ring main body slid chamber；802, valve body corresponds to the outer wall of pressing ring main body slid chamber；
9, spring cavity；10, the first fit-up gap；11, the second fit-up gap.
Specific embodiment
In order to which technical solution of the present invention is more clearly understood, with reference to the accompanying drawings and embodiments, to the present invention make into
One step is described in detail.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to limit this hair
It is bright.
Referring to figs. 1 to Fig. 3, the present invention provides a kind of 2 sealing mechanism of valve seat suitable for worst cold case, including 1 He of valve body
The sphere 5 being mounted in valve body 1, is also equipped with the valve seat 2 with the sealing cooperation of sphere 5 in valve body 1, the valve seat 2 and valve body 1 it
Between be provided with sealing ring installation cavity 7, lip-type packing 3, the lip-type packing 3 and valve seat 2 are equipped in the sealing ring installation cavity 7
And valve body 1 is interference fitted, and is equipped with support spring circle 301 between the lip of the lip-type packing 3, the valve body 1 and valve seat 2 it
Between be additionally provided with pressing ring, the pressing ring includes pressing ring main body 401 and is fixedly installed on pressing ring main body 401 and corresponding lip position
Pressing ring lug boss 402, corresponded between valve seat 2 and valve body 1 sealing ring installation cavity 7 outer end be provided with and communicated with pressing ring main body sliding
Chamber 8, the sliding of pressing ring main body 401 is set in pressing ring main body slid chamber 8 and the pressing ring master corresponding with valve seat of pressing ring main body 401
The inner wall 801 of body slid chamber limits cooperation, and preloading spring 6 is equipped between the pressing ring main body 401 and the valve body 1, pre-tightens bullet
Spring 6 drives pressing ring main body 401 to resist the inner wall 801 that valve 2 corresponds to pressing ring main body slid chamber, and pressing ring lug boss 402 extend into sealing
Enclose installation cavity 7 and with 301 press fit of support spring circle, support spring circle 301 by lip-type packing 3 strut constitute 1 He of valve body
Sealing between valve seat 2.Wherein, lip-type packing 3 is using nonmetallic materials systems such as pure or enhancing PTFE, TFE, PCTFE
It makes, support spring circle 301 is manufactured using metal material.In order to ensure the reliable sealing of lip-type packing 3, with lip-type packing 3
The valve seat 2 and 1 surface of valve body being in contact have very high finish.In addition, lip-type packing 3 and valve body 1, valve seat 2 are interference fitted,
And magnitude of interference makes to form sealing between 2 valve body 1 of valve seat not less than 0.7mm.Support spring circle 301 is end to end spiral bullet
Spring.
The valve body 1 is equipped with the first limit terrace 101, and the valve seat 2, which is equipped with, limits what terrace 101 offseted with described first
Second limit terrace 201 is equipped with the first fit-up gap 10 between the first limit terrace 101 and the second limit terrace 201.Institute
When stating pressing ring main body 401 and abutting to valve seat and correspond to the inner wall 801 of pressing ring main body slid chamber, the outer wall and valve body of pressing ring main body 401
The outer wall 802 of corresponding pressing ring main body slid chamber is equipped with the second fit-up gap 11, and second fit-up gap 11 is greater than the first assembly
Gap 10.
Valve body 1 is equipped with the spring cavity 9 plugged for preloading spring 6, and spring cavity 9 limits preloading spring 6.
The present invention also provides a kind of fixed balls of low temperature using 2 sealing mechanism of valve seat suitable for worst cold case
Valve.
After valve seat 2, lip-type packing 3, support spring circle 301, pressing ring, preloading spring 6 and valve body 1 assemble, preloading spring 6
Elastic force acted on valve seat 2 by pressing ring main body 401, pressing ring lug boss 402 receives elastic force and squeezes to support spring circle 301,
When pressing ring main body 401 abuts to the inner wall 801 of the corresponding pressing ring main body slid chamber of valve seat 2, the pressing ring lug boss 402 enters lip
In the lip of shape sealing ring 3, support spring circle 301 is made to generate 1/5 deformation quantity for being equivalent to itself interior diameter.Pressing ring lug boss
Gap is equipped between 402 and the upper wall and lower wall of sealing ring installation cavity 7.Support spring circle 301 makes lip packing after being squeezed
The lip of circle 3 struts the gap between filling pressing ring lug boss 402 and sealing ring installation cavity 7, to make lip-type packing 3 and valve
Body 1 and the closer gluing, sealing of valve seat 2, even if the lip of lip-type packing 3 has a degree of receipts at quite low temperatures
Contracting, still is able to ensure the reliable sealing of lip-type packing 3.Pressing ring lug boss 402 along the direction towards support spring circle 301 by
Gradual change is small, and support spring circle 301 is made to be easier to stress deformation.The mechanism designs the sealing mechanism for solving conventional lip-type packing 3
It is unable to ensure sealing reliability problem at low temperature.Pressing ring main body is set to stick on valve seat 2 by the way that pressing ring main body slid chamber 8 is arranged
On, squeeze distance of the pressing ring lug boss 402 to support spring circle 301 is limited, guarantees the support spring circle in lip-type packing 3
301 not will receive the excessive active force of pressing ring lug boss 402, and therefore, mechanism designs the lip that can control lip-type packing 3
Strut, both guaranteed the reliable sealing of lip-type packing 3 at low temperature, also can be avoided lip-type packing 3 by excessive outer
Power is acted on and is damaged.
In addition, guaranteeing that valve seat 2, pressing ring and valve body 1 are axially having certain gap when design, enable valve seat 2 along axial direction
It is mobile, by the axial movement of valve seat 2, valve seat 2 is enable closely to fit on sphere 5, it is ensured that between valve seat 2 and sphere 5
Reliable sealing, furthermore, it is contemplated that the components such as valve seat 2, sphere 5 generate the variation of size, the gap because of expanding with heat and contract with cold
Setting can prevent from causing valve to be stuck because of change in size.
Above embodiments are only explanation of the invention, are not limitation of the present invention, for the general of this field
For logical technical staff, without departing from the principle of the present invention, various modifications and improvements can be made, these are belonged to
Protection scope of the present invention, therefore the scope of protection of the patent of the present invention should be subject to the claims.
Claims (10)
1. a kind of valve seat sealing mechanism suitable for worst cold case, including valve body and it is mounted on the intracorporal sphere of valve, in valve body also
Valve seat with ball seal cooperation is installed, sealing ring installation cavity is provided between the valve seat and valve body, sealing ring installation
It is intracavitary to be equipped with lip-type packing, support spring circle is equipped between the lip of the lip-type packing, it is characterised in that: the valve body
Pressing ring is additionally provided between valve seat, the pressing ring includes pressing ring main body and is fixedly installed on pressing ring main body and corresponds to lip position
The pressing ring lug boss set, the outer end that sealing ring installation cavity is corresponded between valve seat and valve body are provided with and communicated with pressing ring main body slid chamber,
The described pressing ring main body sliding is set in pressing ring main body slid chamber and pressing ring main body pressing ring main body slid chamber corresponding with valve seat
Inner wall limit cooperation, is equipped with preloading spring between the pressing ring main body and the valve body, preloading spring driving pressing ring main body compresses
On the inner wall that valve seat corresponds to pressing ring main body slid chamber, pressing ring lug boss extend into sealing ring installation cavity and with support spring circle pressure
Cooperation is connect, lip-type packing is strutted the sealing constituted between valve body and valve seat and cooperated by support spring circle.
2. a kind of valve seat sealing mechanism suitable for worst cold case according to claim 1, it is characterised in that: the valve body
Equipped with the first limit terrace, the valve seat is equipped with the second limit terrace to offset with the first limit terrace, first limit
The first fit-up gap is equipped between position terrace and the second limit terrace.
3. a kind of valve seat sealing mechanism suitable for worst cold case according to claim 2, it is characterised in that: the pressing ring
Main body abuts to the outer wall pressing ring main body sliding corresponding with valve body of pressing ring main body when valve seat corresponds to the inner wall of pressing ring main body slid chamber
The outer wall of chamber is equipped with the second fit-up gap, and second fit-up gap is greater than the first fit-up gap.
4. a kind of valve seat sealing mechanism suitable for worst cold case according to claim 1, it is characterised in that: the pressing ring
When main body abuts to valve seat and corresponds to the inner wall of pressing ring main body slid chamber, the pressing ring lug boss squeezes support spring circle and generates shape
Become, deformation quantity is the 1/5 to 1/3 of the interior diameter of support spring circle.
5. a kind of valve seat sealing mechanism suitable for worst cold case according to claim 1, it is characterised in that: the pressing ring
Gap is equipped between lug boss and the upper wall and lower wall of sealing ring installation cavity.
6. a kind of valve seat sealing mechanism suitable for worst cold case according to claim 5, it is characterised in that: the pressing ring
Lug boss edge gradually becomes smaller towards the direction of support spring circle.
7. a kind of valve seat sealing mechanism suitable for worst cold case according to claim 1, it is characterised in that: the valve body
It is equipped with the spring cavity plugged for the preloading spring.
8. a kind of valve seat sealing mechanism suitable for worst cold case according to claim 1, it is characterised in that: the lip
It is interference fitted between shape sealing ring and valve seat and valve body.
9. a kind of valve seat sealing mechanism suitable for worst cold case according to claim 1, it is characterised in that: the support
Spring ring is end to end helical spring.
10. a kind of low temperature fixing ball valve including the described in any item valve seat sealing mechanisms of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811494683.5A CN109506006A (en) | 2018-12-07 | 2018-12-07 | A kind of valve seat sealing mechanism suitable for worst cold case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811494683.5A CN109506006A (en) | 2018-12-07 | 2018-12-07 | A kind of valve seat sealing mechanism suitable for worst cold case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109506006A true CN109506006A (en) | 2019-03-22 |
Family
ID=65753170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811494683.5A Pending CN109506006A (en) | 2018-12-07 | 2018-12-07 | A kind of valve seat sealing mechanism suitable for worst cold case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109506006A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112298263A (en) * | 2019-07-30 | 2021-02-02 | 比亚迪股份有限公司 | Buffer device, coupler assembly, train and rail transit system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT290938B (en) * | 1968-12-11 | 1971-06-25 | Cameron Iron Works Inc | Sealing arrangement for devices which are exposed to high temperatures during assembly in the area of the seal, e.g. as a result of welding |
| CN201069001Y (en) * | 2007-07-26 | 2008-06-04 | 自贡新地佩尔阀门有限公司 | Zero leakage ultra-high pressure fixed ball-valve |
| CN103527808A (en) * | 2013-10-30 | 2014-01-22 | 苏州纽威阀门股份有限公司 | Ball valve |
| CN104067040A (en) * | 2011-11-01 | 2014-09-24 | 泰耶哈兰德股份有限公司 | Seal arrangement for valve |
| CN204372217U (en) * | 2014-12-18 | 2015-06-03 | 承德高中压阀门管件集团有限公司 | Ultra-low temperature ball valve |
| CN108895175A (en) * | 2018-08-30 | 2018-11-27 | 昆山维萨阀门有限公司 | A kind of metal hard-sealing ball valve |
| CN209309376U (en) * | 2018-12-07 | 2019-08-27 | 超达阀门集团股份有限公司 | A kind of valve seat sealing mechanism suitable for worst cold case |
-
2018
- 2018-12-07 CN CN201811494683.5A patent/CN109506006A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT290938B (en) * | 1968-12-11 | 1971-06-25 | Cameron Iron Works Inc | Sealing arrangement for devices which are exposed to high temperatures during assembly in the area of the seal, e.g. as a result of welding |
| CN201069001Y (en) * | 2007-07-26 | 2008-06-04 | 自贡新地佩尔阀门有限公司 | Zero leakage ultra-high pressure fixed ball-valve |
| CN104067040A (en) * | 2011-11-01 | 2014-09-24 | 泰耶哈兰德股份有限公司 | Seal arrangement for valve |
| CN103527808A (en) * | 2013-10-30 | 2014-01-22 | 苏州纽威阀门股份有限公司 | Ball valve |
| CN204372217U (en) * | 2014-12-18 | 2015-06-03 | 承德高中压阀门管件集团有限公司 | Ultra-low temperature ball valve |
| CN108895175A (en) * | 2018-08-30 | 2018-11-27 | 昆山维萨阀门有限公司 | A kind of metal hard-sealing ball valve |
| CN209309376U (en) * | 2018-12-07 | 2019-08-27 | 超达阀门集团股份有限公司 | A kind of valve seat sealing mechanism suitable for worst cold case |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112298263A (en) * | 2019-07-30 | 2021-02-02 | 比亚迪股份有限公司 | Buffer device, coupler assembly, train and rail transit system |
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