CN109058505A - A kind of wedge-type ultralow temperature top mounting ball valve - Google Patents
A kind of wedge-type ultralow temperature top mounting ball valve Download PDFInfo
- Publication number
- CN109058505A CN109058505A CN201811285169.0A CN201811285169A CN109058505A CN 109058505 A CN109058505 A CN 109058505A CN 201811285169 A CN201811285169 A CN 201811285169A CN 109058505 A CN109058505 A CN 109058505A
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- valve
- valve seat
- wedge
- sphere
- lip
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- 238000007789 sealing Methods 0.000 claims abstract description 29
- 239000007937 lozenge Substances 0.000 claims abstract description 12
- 238000011144 upstream manufacturing Methods 0.000 claims description 21
- 238000012856 packing Methods 0.000 claims description 11
- 239000000945 filler Substances 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910002804 graphite Inorganic materials 0.000 claims description 5
- 239000010439 graphite Substances 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 abstract description 6
- 239000003949 liquefied natural gas Substances 0.000 description 7
- 238000009434 installation Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000011161 development Methods 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
- 239000007769 metal material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- 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
- F16K5/0605—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 with particular plug arrangements, e.g. particular shape or built-in means
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- 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
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- 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
- F16K5/0689—Packings between housing and plug
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- 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
- F16K5/205—Sealing effected by the flowing medium
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention discloses a kind of wedge-type ultralow temperature top mounting ball valves, including valve body, sphere and valve seat, the contact surface of sphere and valve seat is lozenges, the contact surface of valve seat and valve body is lozenges, the upper end size of lozenges is greater than the lower end size of lozenges, valve seat includes valve seat support ring, valve seat insert and sealing ring, valve seat support ring is equipped with the first seal groove close to the side of sphere, valve seat support ring is equipped with the second seal groove close to the side of valve body, it is equipped with valve seat insert in first seal groove, is equipped with sealing ring in the second seal groove.Wedge-type ultralow temperature top mounting ball valve provided by the invention, structure is simple, on-line maintenance is more convenient, low temperature resistant, sealing performance is strong, valve body wedge-type sealing surface structure, and between valve body wedge surface and spherical surface, wedge surface principle makes that pretightning force is bigger, sealing performance is more preferable for valve seat wedging.
Description
Technical field
The present invention relates to fluid control valve technical field more particularly to a kind of wedge-type ultralow temperature top mounting ball valves.
Background technique
As the rapid development of petroleum, chemical industry and gas industry, especially liquefied natural gas (LNG) are used as a kind of emerging energy
The extensive use in source, so that the demand of LNG cryogenic valve increases sharply.Since the temperature under LNG normal pressure is -162 DEG C,
And it is inflammable and explosive, therefore when designing LNG cryogenic valve, higher and tightened up requirement is proposed to its sealing performance.
Currently, domestic cryogenic ball valve is also in the stage early stage of development, for example, the cryogenic ball valve that uses of LNG station it is substantially all according to
Rely import, not only involve great expense, but also delivery date is especially long, after-sales service process is cumbersome.By being carried out to domestic cryogenic ball valve
The test of low temperature seal performance, discovery slip have generally exceeded the standard.
Under low-temperature condition, the coefficient of expansion of nonmetallic materials is much bigger compared with metal material, so that contraction when its low temperature
It measures and differs larger with the shrinkage of the matching pieces such as metal seal, valve body, so as to cause seal pressure seriously reduces and generates nothing
The result of method sealing.And most of nonmetallic materials can be hardened and become fragile at cryogenic temperature, lose toughness, so as to cause cold
Stream and stress relaxation.The intensity and hardness raising of metal material under cryogenic, plasticity and toughness reduce, and show different journeys
The brittle fracture under low temperature phenomenon of degree seriously affects the performance and safety of valve.
The integral type top low temperature dress fixing ball valve that LNG station uses generally is run-in index valve seat, and valve seat construction is complicated, valve seat
Component part is various, and the mounting means of valve seat is screw thread rotation type structure, and the structure screw thread rotation is difficult, being dismounted for multiple times, screw thread
It is easily damaged.Big for smaller diameter valve valve block hole machined difficulty, on-line maintenance is difficult.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of wedge-type ultralow temperature top mounting ball valve.
A kind of wedge-type ultralow temperature top mounting ball valve, including valve body, sphere and valve seat, the sphere are set in the valve body, institute
State and be equipped with the valve seat between sphere and the valve body, the contact surface of the sphere and the valve seat is lozenges, the valve seat with
The contact surface of the valve body is lozenges, and the upper end size of the lozenges is greater than the lower end size of the lozenges, the valve
Seat includes valve seat support ring, valve seat insert and sealing ring, and the valve seat support ring is equipped with first close to the side of the sphere
Seal groove, the valve seat support ring are equipped with the second seal groove close to the side of the valve body, are equipped with institute in first seal groove
Valve seat insert is stated, is equipped with the sealing ring in second seal groove.
Above technical scheme is preferred, and the sealing ring is lip-shaped ring, and the lip-shaped ring includes being located at the ball valve upstream
Upstream lip-shaped ring and downstream lip-shaped ring positioned at the ball valve downstream, be equipped with runner in the valve body, sphere and valve seat, institute
The lip for stating upstream lip-shaped ring is arranged towards the runner.
Above technical scheme is preferred, and the lip of the downstream lip-shaped ring is arranged away from the runner.
Above technical scheme is preferred, and valve deck is equipped with above the valve body, and the sphere and the valve cover chamber, which are equipped with, to be pre-tightened
Device.
Above technical scheme is preferred, and one end that the valve deck protrudes into the valve body is equipped with first boss, the sphere
Corresponding position is equipped with second boss, and the pre-tightening apparatus is set between the first boss and the second boss.
Above technical scheme is preferred, and the pre-tightening apparatus is leaf spring, and one end of the leaf spring and the first boss connect
It connects, the other end of the leaf spring is connect with the second boss.
Above technical scheme is preferred, and the upper end of the sphere is equipped with valve rod, and the valve stem sleeve is set in the valve deck, institute
It states valve rod and the valve cover chamber is equipped with packing seal component.
Above technical scheme is preferred, and the packing seal component includes the lip-shaped ring set gradually from the bottom to top, filler
Pad, filler, filler pressing sleeve, hold-down grid, disc spring, stud and hex nut.
Above technical scheme is preferred, and the valve body and the valve cover chamber are equipped with graphite wound gasket.
Above technical scheme is preferred, and the valve body both ends are equipped with sleeve.
The advantages and positive effects of the present invention are: a kind of wedge-type ultralow temperature top mounting ball valve provided by the invention, valve seat,
Sphere and valve body wedge-type seal face structure, between valve body wedge surface and spherical surface, wedge surface principle makes pretightning force bigger, close for valve seat wedging
Sealing property is more preferable；With self-compensating function, ball valve can be effectively prevented at low ambient temperatures, the assembly as caused by low temperature is pre-
The sealing leak that clamp force is loose and is formed；Valve seat is equipped with upstream lip-shaped ring and downstream lip-shaped ring, it can be achieved that upstream and downstream valve seat is same
When seal；When valve body middle chamber superpressure, upstream lip-shaped ring lip is arranged towards runner, and middle cavity pressure promotes upstream lip-shaped ring lip to close
It closes, so that pressure release is realized, so that valve is safe and reliable；When on-line maintenance, wedge surface insertion is become from Conventional parallel formula valve seat construction
Structure avoids the damage that repeatedly installation causes screw thread, and valve seat and sphere can be used as an entirety, when sphere is upward by tooling
It when lifting, valve seat and lip-shaped ring and can be removed together, the online dismounting in repeatedly scene may be implemented, it is easy to maintenance；Ball valve has
Fire-proof function, and leakproofness when ensure that fire.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of the invention；
Fig. 2 is the structural schematic diagram of the valve seat of one embodiment of the invention.
Wherein: 1- valve body；The downstream 2- lip-shaped ring；3- valve seat；3a- valve seat insert；3b- valve seat support ring；4- sphere；5-
Thrust pad；6- lower bearing；The upstream 7- lip-shaped ring；8- sleeve；9- leaf spring；10- wound gasket；11- upper bearing (metal)；12- valve deck；13- is pushed away
Power pad；14- stud；15- hex nut；16- valve rod；17- drain pan；18- lip-shaped ring；19- Packing seat 20- filler；21- filler
Pressing sleeve；22- hold-down grid 23- disc spring；24- stud；25- hex nut；26- handle；27- washer；28- hex nut；41-
One boss；121- second boss.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can
To explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1, the present invention provides a kind of wedge-type ultralow temperature top mounting ball valve, including roof-mounted valve body 1, it is mounted on valve
The valve deck 12 of body upper end is symmetrically located at 4 liang of sphere in the valve rod 16 in valve deck 12, the sphere in 1 inner cavity of valve body 4, two
The valve seat 3 of side, the interior sealing surface cooperated with valve seat 3 of valve body 1 are wedge shape, lower end size of the wedge-shaped upper end size greater than wedge shape.
One end that valve deck protrudes into valve body is equipped with first boss 41, and the corresponding position of sphere is equipped with second boss 121, and pre-tightening apparatus is set to the
Between one boss and second boss, the present embodiment is preferred, and pre-tightening apparatus is leaf spring, and one end of leaf spring is connect with first boss, plate
The other end of spring is connect with second boss, and leaf spring 9 provides the pretightning force for keeping sphere downward.Valve deck and valve body pass through stud 14 and six
Angle nut 15 realizes connection.
Sphere realizes positioning, upper bearing (metal) 11 and 12 hole of valve deck adaptation, lower bearing 6 and valve by upper bearing (metal) 11 and lower bearing 6
1 hole of body is adapted, and 4 upper end flat of sphere and 16 square groove of valve rod cooperate, and valve rod 16 is adapted with 12 hole of valve deck, and 16 top of valve rod is flat
Side is connect with handle 26, and fixed with washer 27, hex nut 28.The lower end of sphere and the contact position of valve body are equipped with thrust pad 5,
Thrust pad 13 is equipped between the horizontal plane that valve rod is contacted with valve deck.
It is equipped with packing seal component between valve rod 16 and valve deck 12, packing seal component includes successively fixing sleeve from bottom to top
Lip-shaped ring 18 in 16 upper end of valve rod；Packing seat 19；Filler 20；Filler pressing sleeve 21；Hold-down grid 22；Disc spring 23；Stud 24；Six
Angle nut 25.It is provided with relief hole on valve rod 16 and sphere 4, relief hole is communicated with valve body valve chamber, can effectively prevent local pressure
It steeply rises.
Valve seal is influenced when to avoid being welded to pipeline, having welded sleeve 8 in the both side ends of valve body 1.Valve deck 12
Drain pan 17 is equipped at long-neck, drain pan 17 is welded on valve deck 12.
As shown in Fig. 2, valve seat 3 includes valve seat insert 3a, valve seat support ring 3b, upstream lip-shaped ring 7 and downstream lip-shaped ring
2, valve seat support ring is equipped with the first seal groove close to the side of sphere, and valve seat support ring is equipped with the second sealing close to the side of valve body
Slot, the first seal groove is interior to be equipped with valve seat insert, sealing ring is equipped in the second seal groove, sealing ring uses lip shape in the present embodiment
Circle, lip-shaped ring include the downstream lip-shaped ring positioned at the upstream lip-shaped ring of ball valve upstream and positioned at ball valve downstream, upstream lip-shaped ring
Lip is arranged towards runner, and the lip of downstream lip-shaped ring is arranged away from runner.Lip-shaped ring and valve body 1 it is in sealing contact, it can be achieved that on
Downstream valve seat seals simultaneously, and upstream lip-shaped ring 7 can be from pressure release when valve chamber superpressure.
Lip-shaped ring (lip-type packing LIP-SEAL) used in above structure is a kind of elastic seal ring, belongs to existing skill
Art, it is close to the surface of sealed coupling part by lip, blocks leakage channel and obtains sealing effect, when sealed medium pressure increases
When big, lip is softened, and is closely bonded with sealing surface.Lip-type packing (LIP-SEAL) pressing force is with pressure medium
Change and change, not only can guarantee enough sealing pressing forces, but also unlikely generate excessive friction.
During installation, valve seat support ring 3b, downstream lip-shaped ring 2, upstream lip-shaped ring 7 and valve seat insert 3a are close to sphere 4
It forms a whole, together loading valve body 1, in leaf spring 9 load transmission to valve seat 3, is provided between valve seat 3 and sphere 4 initial
Sealing force.In use, pushing 7 lip of upstream lip-shaped ring, the wedge shape of one side compression valve body 1 of lip under the medium effect of upstream end
Sealing surface, another the second seal groove of side compression, so that valve seat forms sealing close to the end face of valve body, sealing is with the pressure of rear valve base 3
To sphere 4, so that being sealed between valve seat 3 and sphere 4 relatively reliable.When cavity pressure steeply rises but without departing from 1.33 in valve body 1
When times valve rated pressure value, middle cavity pressure is closed 7 lip of upstream lip-shaped ring in 3 second seal groove of valve seat, upstream valve
Body is no longer sealed with valve seat, and middle cavity pressure is discharged into runner, so that middle cavity pressure is also released, so that valve security performance can
It leans on, and downstream lip-shaped ring lip is arranged far from runner, when middle cavity pressure exceeds product rated value, middle cavity pressure makes downstream lip shape
The lip of circle is softened, more fitting valve body and valve seat, ensure that leakproofness.
Since valve is assembled at normal temperature, and the application environment of valve is low temperature or ultra-low temperature surroundings, valve internals
It being influenced by cryogenic temperature, each component can be shunk, and lead to pretightning force relaxation, at this point, leaf spring 9 can release energy, is pressed downward sphere 4,
Sphere 4 glides together with valve seat 3 along the inclined-plane of valve body 1, since 1 liang of tapered plane of valve body is rendered as key-like structure, in downslide process
In, inclined-plane and valve seat 3,4 wedging of sphere increase seal pressure, enhance sealing performance.In addition, when valve seat 3 is worn
When, original-pack to become smaller with pretightning force, leaf spring 9 can equally be pressed downward sphere 4, automatic to compensate valve seat assembly pretightening power.
When on-line maintenance, wedge surface insert structure is become from Conventional parallel formula valve seat construction, repeatedly installation is avoided and causes spiral shell
The online dismounting in repeatedly scene may be implemented in the damage of line, easy to maintenance.Specific valve seat 3 and sphere 4 can be used as an entirety,
When sphere 4 is lifted up by tooling, valve seat 3 can be removed together with sphere, convenient for disassembly and assembly.
Valve body 1 and valve deck 12 have graphite wound gasket 10, and filler 20 is graphite between valve deck 12 and valve rod 16, and graphite is resistance to height
Temperature, refractory material have good fire-proof function, can guarantee that valve does not leak outside when a fire, have ball valve anti-
Fiery function.When a fire, due to the possible seal failure of valve seat insert 3a, valve seat support ring 3b can directly be attached to sphere 4
On, sphere 4 glides together with valve seat support ring 3b along the inclined-plane of valve body 1 under the action of leaf spring 9, due to 1 liang of tapered plane of valve body
It is rendered as key-like structure, so that valve seat support ring and sphere is remained preload, thus sealing when ensure that fire.
One embodiment of the present invention has been described in detail above, but the content is only preferable implementation of the invention
Example, should not be considered as limiting the scope of the invention.It is all according to all the changes and improvements made by the present patent application range
Deng should still be within the scope of the patent of the present invention.
Claims (10)
1. a kind of wedge-type ultralow temperature top mounting ball valve, including valve body, sphere and valve seat, the sphere is set in the valve body, described
The valve seat is equipped between sphere and the valve body, it is characterised in that: the contact surface of the sphere and the valve seat is lozenges, institute
The contact surface for stating valve seat and the valve body is lozenges, and the upper end size of the lozenges is greater than the lower end ruler of the lozenges
Very little, the valve seat includes valve seat support ring, valve seat insert and sealing ring, and the valve seat support ring is close to the side of the sphere
Equipped with the first seal groove, the valve seat support ring is equipped with the second seal groove, first seal groove close to the side of the valve body
It is interior to be equipped with the valve seat insert, the sealing ring is equipped in second seal groove.
2. wedge-type ultralow temperature top mounting ball valve according to claim 1, it is characterised in that: the sealing ring is lip-shaped ring, institute
Stating lip-shaped ring includes the downstream lip-shaped ring positioned at the upstream lip-shaped ring of the ball valve upstream and positioned at the ball valve downstream, the valve
Runner is equipped in body, sphere and valve seat, the lip of the upstream lip-shaped ring is arranged towards the runner.
3. wedge-type ultralow temperature top mounting ball valve according to claim 2, it is characterised in that: the lip of the downstream lip-shaped ring is carried on the back
It is arranged from the runner.
4. wedge-type ultralow temperature top mounting ball valve according to claim 1-3, it is characterised in that: set above the valve body
There is valve deck, the sphere and the valve cover chamber are equipped with pre-tightening apparatus.
5. wedge-type ultralow temperature top mounting ball valve according to claim 4, it is characterised in that: the valve deck protrudes into the valve body
One end is equipped with first boss, and the corresponding position of the sphere is equipped with second boss, and the pre-tightening apparatus is set to the first boss
Between the second boss.
6. wedge-type ultralow temperature top mounting ball valve according to claim 5, it is characterised in that: the pre-tightening apparatus is leaf spring, institute
The one end for stating leaf spring is connect with the first boss, and the other end of the leaf spring is connect with the second boss.
7. wedge-type ultralow temperature top mounting ball valve according to claim 4, it is characterised in that: the upper end of the sphere is equipped with valve
Bar, the valve stem sleeve are set in the valve deck, and the valve rod and the valve cover chamber are equipped with packing seal component.
8. wedge-type ultralow temperature top mounting ball valve according to claim 7, it is characterised in that: the packing seal component include by
Under the supreme lip-shaped ring set gradually, Packing seat, filler, filler pressing sleeve, hold-down grid, disc spring, stud and hex nut.
9. wedge-type ultralow temperature top mounting ball valve according to claim 4, it is characterised in that: the valve body is set with the valve cover chamber
There is graphite wound gasket.
10. wedge-type ultralow temperature top mounting ball valve according to claim 1, it is characterised in that: the valve body both ends are equipped with sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811285169.0A CN109058505A (en) | 2018-10-31 | 2018-10-31 | A kind of wedge-type ultralow temperature top mounting ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811285169.0A CN109058505A (en) | 2018-10-31 | 2018-10-31 | A kind of wedge-type ultralow temperature top mounting ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109058505A true CN109058505A (en) | 2018-12-21 |
Family
ID=64789055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811285169.0A Pending CN109058505A (en) | 2018-10-31 | 2018-10-31 | A kind of wedge-type ultralow temperature top mounting ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109058505A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798372A (en) * | 2019-03-14 | 2019-05-24 | 江苏神通阀门股份有限公司 | Formula beveled ball valve is filled on a kind of low temperature |
| CN110762244A (en) * | 2019-10-30 | 2020-02-07 | 上海沪东造船阀门有限公司 | Marine high-performance flexible sliding composite sealing seat |
| CN111442109A (en) * | 2020-04-17 | 2020-07-24 | 方正阀门集团永嘉科技有限公司 | High-reliability ultralow-temperature fixed ball valve with filtering function |
| CN114352764A (en) * | 2022-01-17 | 2022-04-15 | 成都成高阀门有限公司 | Cryogenic ball valve and using method thereof |
| CN114688286A (en) * | 2020-12-28 | 2022-07-01 | 纳福希（上海）阀门科技有限公司 | Top-mounted ultra-low temperature floating ball valve |
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| CN209041630U (en) * | 2018-10-31 | 2019-06-28 | 天津欧通流体控制设备有限公司 | A kind of wedge-type ultralow temperature top mounting ball valve |
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| CN109798372A (en) * | 2019-03-14 | 2019-05-24 | 江苏神通阀门股份有限公司 | Formula beveled ball valve is filled on a kind of low temperature |
| CN110762244A (en) * | 2019-10-30 | 2020-02-07 | 上海沪东造船阀门有限公司 | Marine high-performance flexible sliding composite sealing seat |
| CN111442109A (en) * | 2020-04-17 | 2020-07-24 | 方正阀门集团永嘉科技有限公司 | High-reliability ultralow-temperature fixed ball valve with filtering function |
| CN114688286A (en) * | 2020-12-28 | 2022-07-01 | 纳福希（上海）阀门科技有限公司 | Top-mounted ultra-low temperature floating ball valve |
| CN114352764A (en) * | 2022-01-17 | 2022-04-15 | 成都成高阀门有限公司 | Cryogenic ball valve and using method thereof |
| CN114352764B (en) * | 2022-01-17 | 2022-08-05 | 成都成高阀门有限公司 | Cryogenic ball valve and using method thereof |
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