CN104565422B - A kind of entirety discharging type cryogenic ball valve - Google Patents
A kind of entirety discharging type cryogenic ball valve Download PDFInfo
- Publication number
- CN104565422B CN104565422B CN201310521726.5A CN201310521726A CN104565422B CN 104565422 B CN104565422 B CN 104565422B CN 201310521726 A CN201310521726 A CN 201310521726A CN 104565422 B CN104565422 B CN 104565422B
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- China
- Prior art keywords
- valve body
- spool
- valve
- stainless steel
- steel cylinder
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- 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.)
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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
- F16K5/08—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
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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
- 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
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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
- F16K5/0694—Spindle sealings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Taps Or Cocks (AREA)
- Valve Housings (AREA)
Abstract
The present invention relates to a kind of whole discharging type cryogenic ball valves, including valve body (12), spool (10), valve rod (19), the spool (10) is placed in valve body (12), valve rod (19) the connection spool (10), further include stainless steel cylinder structure, the stainless steel cylinder structure includes stainless steel cylinder (11), bilateral butterfly spring (8) and ball face sealing circle b (9), the stainless steel cylinder (11) is placed in valve body (12), one end is connected with valve body (12), the other end is tightly connected by bilateral butterfly spring (8) and ball face sealing circle b (9) with spool (12).Compared with prior art, the present invention has many advantages, such as that good seal performance and service life are long.
Description
Technical field
The present invention relates to ball valve, more particularly, to a kind of whole discharging type cryogenic ball valve.
Background technology
General cryogenic ball valve valve body and sealing structure are made of one formula structure and installation are left on valve body both at home and abroad at present
The structure of hard seal valve seat or soft seal ring, when being separate structure for valve body, processing installation is close on the small valve body of size
The structure of envelope is relatively simple, but relatively difficult for the valve body processing of large bore valves, adds for monoblock type valve body structure
Work sealing structure is more difficult；There is open during Subzero valve causes valve when opening and closing due to the influence of cryogenic media
It opens difficult or closes the problem of difficult, existing solution method is the length of extension valve rod, and reducing cryogenic media and being uploaded along valve rod influences
Valve is turned on and off, and the overall dimension of valve body can so increased.It is largely used at present from the point of view of ball valve sealing stress
The sealing element of cryogenic ball valve is acted on by individual event pulsating force, is easily generated fatigue deformation in the course of work, is the master of valve leaks
One of reason is wanted, is a problem to be solved.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of valve is reliable, long-lived
Order the whole discharging type cryogenic ball valve of sealing.
The purpose of the present invention can be achieved through the following technical solutions：A kind of entirety discharging type cryogenic ball valve, including valve
Body, spool, valve rod, the spool are placed in valve body, valve rod connection spool, which is characterized in that further include stainless steel
Cylindrical structure, the stainless steel cylinder structure include stainless steel cylinder, bilateral butterfly spring and ball face sealing circle b, and described is stainless
Steel cylinder is placed in valve body, and one end is connected with valve body, and the other end passes through bilateral butterfly spring and ball face sealing circle b and spool
Be tightly connected, the leakproofness of sealing ring and spool can be controlled by adjusting screw rod in assembling or installation, so as to avoid
Sealing structure is processed on valve body, reduces difficulty of processing and cost, can also realize better seal effect.Valve body structure uses
Its material of monolithic construction uses the good stainless steel material of cryogenic property.
The end face of the stainless steel cylinder be provided with size identical with valve body end face threaded hole be used for and valve body coordinate,
It is connected by bolt a, other end is provided with seal groove, and bilateral butterfly spring and ball face sealing circle b are placed in seal groove, and spherical surface is close
Seal b is close to spool, forms sealing structure, cryogen can effectively be prevented to pass through stainless steel sealed cylindrical structure and valve body
Between fit clearance outwards flow, so as to fulfill valve body leakage seal.
Sleeve is cased with outside the valve rod, is equipped with upper press cover at the top of sleeve, upper press cover has butterfly spring a and sealing is filled out
Material, sleeve bottom are equipped with lower cover, and lower cover lid is located on valve body and spool.
Be equipped between the lower cover and spool butterfly spring b and ball face sealing circle a, ball face sealing circle a and spool it
Between form ball face sealing.Increase butterfly spring and ball face sealing circle, sealing ring and spool between gland structure and valve core structure
Between form ball face sealing, which can effectively prevent the cryogen medium and valve stem contacts of valve body cavity, so as to subtract
Few influence of the low temperature to valve rod, final realize reduce cryogenic media to valve opening and the detrimental effect closed, reduce low temperature valve
The length of door overall dimensions such as valve rod.
The spool is the sphere core structure that is combined with spherical surface of double end cylinder, double end cylinder respectively with valve body bottom outlet and
Lower cover cooperation installation eliminates fluid to sealing structure pressure, makes, applicable low temperature ring uniform by the seal loading of valve
Border, while low temperature is reduced to valve opening and the influence closed.Upper end is provided with slot and is engaged with valve rod, is carried out for connecting valve rod
Switching manipulation.
The valve stem top is equipped with handle, and passes through clamp nut and be fixed.
By bolt c connection upper press covers at the top of the sleeve, bottom is by bolt b connection lower covers, and in junction
Equipped with planar seal ring b, the junction of lower cover and valve body is equipped with planar seal ring a.
The valve body structure is monoblock type, makes flat shape in the circle inlet of installation spool, and is provided with screw hole to make
It is bolted after being engaged with lower cover institute perforate；Open one and the matched circle of stainless steel outside diameter of cylinder in valve body both sides
Pore structure, both ends of the surface are provided with threaded hole, are easily installed.Body base is processed circular hole and is coordinated with sphere core, spool is received outer
Power is passed on valve body.
Valve of the present invention cryogenic media in fully open state flows fast through valve by spool, due to having valve in valve body
Sealing structure at core and gland causes cryogenic media not with valve stem contacts, therefore smaller to the cold service of valve rod；In valve body
During opening and closing, a cryogenic media part is flowed through by spool, and another part is stayed in spool and valve body, but due to depositing
In above-mentioned sealing structure, cryogenic media is unable to valve stem contacts, equally small to the cold service of valve rod；Valve body is in and completely closes
Since the sealing function between sealing ring and spool is flowed through without medium during state, cryogenic media is to the shadow of valve rod in this case
It is also smaller to ring.In valve whole work process, when can realize that valve is closed by the sealing function of spool and sealing ring
Effect is fully sealed, the sealing formed by gland and spool can effectively prevent cryogen medium and valve stem contacts, subtract
Less to its low temperature effect.
Compared with prior art, present invention has the advantages that：
(1), the leakproofness of sealing ring and spool can be controlled by adjusting screw rod in assembling or installation, so as to avoid
Sealing structure is processed on valve body, reduces difficulty of processing and cost, can also realize better seal effect.Valve body structure is adopted
With monolithic construction, its material uses the good stainless steel material of cryogenic property.
(2), butterfly spring and ball face sealing circle are increased between gland structure and valve core structure, between sealing ring and spool
Ball face sealing is formed, which can effectively prevent the cryogen medium and valve stem contacts of valve body cavity, low so as to reduce
Influence of the temperature to valve rod, final realize reduce cryogenic media to valve opening and the detrimental effect closed, it is whole to reduce Subzero valve
The length of body size such as valve rod.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is A portions enlarged drawing.
It is identified in figure：1st, handle, 2, upper press cover, 3, butterfly spring a, 4, airtight and watertight padding, 5, butterfly spring b, 6, spherical surface it is close
Seal a, 7, fixing bolt, 8, bilateral butterfly spring, 9, ball face sealing circle b, 10, spool, 11, stainless steel cylinder, 12, valve body,
13rd, bolt a, 14, ball face sealing circle c, 15, planar seal ring a, 16, gland, 17, planar seal ring b, 18, bolt b, 19, valve
Bar, 20, stem sleeve, 21, bolt c, 22, clamp nut.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
As shown in Figure 1, a kind of entirety discharging type cryogenic ball valve, including valve body 12, spool 10, valve rod 19, the spool
10 are placed in valve body 12, and ball face sealing circle c14 is equipped between valve body 12 and spool 10, and the valve rod 19 connection spool 10 is gone back
Including stainless steel cylinder structure, which includes stainless steel cylinder 11, bilateral butterfly spring 8 and ball face sealing circle
B9, the stainless steel cylinder 11 are placed in valve body 12, and the threaded hole that one end is provided with size identical with 12 end face of valve body is used
Coordinate in valve body 12, connected by bolt a13, other end is provided with seal groove, bilateral butterfly spring 8 and ball face sealing circle b9
It is placed in seal groove, ball face sealing circle b9 is close to spool 10, forms sealing structure, effectively cryogen can be prevented to pass through not
Fit clearance between rust steel sealed cylindrical structure and valve body outwards flows, and is sealed so as to fulfill the leakage of valve body.
The leakproofness of sealing ring and spool can be controlled by adjusting screw rod in assembling or installation, so as to avoid in valve
Sealing structure is processed on body, reduces difficulty of processing and cost, can also realize better seal effect.Valve body structure is using whole
Its material of body formula structure uses the good stainless steel material of cryogenic property.
Sleeve 20 is cased with outside the valve rod 19,20 top of sleeve is equipped with upper press cover 2, and upper press cover 2 has butterfly spring
A3 and airtight and watertight padding 4,20 bottom of sleeve are equipped with lower cover 16, and the lid of lower cover 16 is located on valve body and spool.The lower cover
Butterfly spring b5 and ball face sealing circle a6 is equipped between 16 and spool 10, it is close that spherical surface is formed between ball face sealing circle a6 and spool 10
Envelope.Increase butterfly spring and ball face sealing circle between gland structure and valve core structure, spherical surface is formed between sealing ring and spool
Sealing, which can effectively prevent the cryogen medium and valve stem contacts of valve body cavity, so as to reduce low temperature to valve rod
Influence, final realize reduce cryogenic media to valve opening and the detrimental effect closed, reduce Subzero valve overall dimensions example
Such as the length of valve rod.
The spool 10 is the sphere core structure that is combined with spherical surface of double end cylinder, double end cylinder respectively with 12 bottom of valve body
Hole and the cooperation installation of lower cover 16, eliminate fluid to sealing structure pressure, make uniform by the seal loading of valve, are applicable in
Low temperature environment, while low temperature is reduced to valve opening and the influence closed.Upper end is provided with slot and is engaged with valve rod, for connection valve
Bar carries out switching manipulation.
19 top of valve rod is equipped with handle 1, and passes through clamp nut 22 and be fixed.
20 top of the sleeve by bolt c21 connections upper press cover 2, bottom by bolt b18 connections lower cover 16, and
Planar seal ring b17 is equipped in junction, lower cover 16 is connected with valve body by fixing bolt 7, and is equipped with plane in junction
Sealing ring a15.
The valve body structure is monoblock type, makes flat shape in the circle inlet of installation spool, and is provided with screw hole to make
It is bolted after being engaged with lower cover institute perforate；Open one and the matched circle of stainless steel outside diameter of cylinder in valve body both sides
Pore structure, both ends of the surface are provided with threaded hole, are easily installed.Body base is processed circular hole and is coordinated with sphere core, spool is received outer
Power is passed on valve body.
Valve working principle：Valve cryogenic media in fully open state flows fast through valve by spool, due to valve
Have in vivo the sealing structure at spool and gland cause cryogenic media not with valve stem contacts, therefore to the cold service of valve rod compared with
It is small；During valve body opening and closing, a cryogenic media part is flowed through by spool, and another part stays in spool and valve body
It is interior, but since there are above-mentioned sealing structure, cryogenic media is unable to valve stem contacts, it is equally small to the cold service of valve rod；Valve body
Since the sealing function between sealing ring and spool is flowed through without medium when in the completely closed state, low temperature is situated between in this case
The influence of confrontation valve rod is also smaller.It, can be real by the sealing function of spool and sealing ring in valve whole work process
Effect is fully sealed when closing in existing valve, the sealing formed by gland and spool can effectively prevent cryogen medium and
Valve stem contacts reduce the low temperature effect to it.
Claims (4)
1. a kind of entirety discharging type cryogenic ball valve, including valve body (12), spool (10), valve rod (19), the spool (10) is put
In valve body (12), the valve rod (19) connection spool (10), which is characterized in that further include stainless steel cylinder structure, this is not
The steel cylinder structure that becomes rusty includes stainless steel cylinder (11), bilateral butterfly spring (8) and ball face sealing circle b (9), stainless steel circle
Cylinder (11) is placed in valve body (12), and one end is connected with valve body (12), and the other end is close by bilateral butterfly spring (8) and spherical surface
Seal b (9) is tightly connected with spool (12)；
Described valve body (12) structure is monoblock type, makes flat shape in the circle inlet of installation spool (10), and is provided with spiral shell
Hole makes it be bolted after being engaged with lower cover (16) institute perforate；Open one and stainless steel cylinder in valve body (12) both sides
(11) the matched borehole structure of outer diameter, both ends of the surface are provided with threaded hole, valve body (12) bottom processing circular hole and sphere core (10)
Cooperation, the external force that spool is received are passed on valve body；
The threaded hole that the end face of the stainless steel cylinder (11) is provided with size identical with valve body (12) end face is used for and valve body
(12) coordinate, other end is provided with seal groove, and bilateral butterfly spring (8) and ball face sealing circle b (9) are placed in seal groove, spherical surface
Sealing ring b (9) is close to spool (10), forms sealing structure；
Sleeve (20) is cased with outside the valve rod (19), is equipped with upper press cover (2) at the top of sleeve (20), upper press cover (2) has butterfly
Shape spring a (3) and airtight and watertight padding (4), sleeve (20) bottom are equipped with lower cover (16), and lower cover (16) lid is located at valve body and spool
On；
Butterfly spring b (5) and ball face sealing circle a (6), ball face sealing circle are equipped between the lower cover (16) and spool (10)
Ball face sealing is formed between a (6) and spool (10).
2. a kind of whole discharging type cryogenic ball valve according to claim 1, which is characterized in that the spool (10) is double
The sphere core structure that head cylinder is combined with spherical surface, double end cylinder are pacified respectively with valve body (12) bottom outlet and lower cover (16) cooperation
Dress.
3. a kind of whole discharging type cryogenic ball valve according to claim 1, which is characterized in that at the top of the valve rod (19)
Equipped with handle (1), and pass through clamp nut (22) and be fixed.
4. a kind of whole discharging type cryogenic ball valve according to claim 1, which is characterized in that at the top of the sleeve (20)
By bolt c (21) connection upper press covers (2), bottom is equipped with plane by bolt b (18) connection lower covers (16), and in junction
Sealing ring b (17), lower cover (16) and the junction of valve body are equipped with planar seal ring a (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310521726.5A CN104565422B (en) | 2013-10-29 | 2013-10-29 | A kind of entirety discharging type cryogenic ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310521726.5A CN104565422B (en) | 2013-10-29 | 2013-10-29 | A kind of entirety discharging type cryogenic ball valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104565422A CN104565422A (en) | 2015-04-29 |
| CN104565422B true CN104565422B (en) | 2018-05-18 |
Family
ID=53082170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310521726.5A Active CN104565422B (en) | 2013-10-29 | 2013-10-29 | A kind of entirety discharging type cryogenic ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104565422B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299307A (en) * | 2015-11-18 | 2016-02-03 | 胡和萍 | Hydraulic pump switching valve for industrial excavator |
| CN105889549A (en) * | 2016-06-12 | 2016-08-24 | 盐城市特密封机械制造有限公司 | Thread type ball valve and valve rod |
| CN109780253B (en) * | 2019-03-22 | 2020-07-21 | 吴金龙 | Air-seal type sealing friction-free pneumatic half-ball valve and control device thereof |
| CN111810665B (en) * | 2020-07-08 | 2023-07-07 | 天津市中核科技实业有限公司 | Ball valve capable of changing valve seat on line |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85202998U (en) * | 1985-07-18 | 1986-08-20 | 杭州制氧机厂 | Discharging ball valve |
| CN2222268Y (en) * | 1994-12-06 | 1996-03-13 | 张俊中 | Ball valve |
| CN201373167Y (en) * | 2009-02-12 | 2009-12-30 | 王奕彤 | 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100942264B1 (en) * | 2008-01-17 | 2010-02-16 | 주식회사 유엔에스 | Cryogenic top entry type ball valve |
| CN202992241U (en) * | 2012-10-09 | 2013-06-12 | 镇江市铸造阀门厂有限公司 | Ultra-low temperature ball valve |
-
2013
- 2013-10-29 CN CN201310521726.5A patent/CN104565422B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85202998U (en) * | 1985-07-18 | 1986-08-20 | 杭州制氧机厂 | Discharging ball valve |
| CN2222268Y (en) * | 1994-12-06 | 1996-03-13 | 张俊中 | Ball valve |
| CN201373167Y (en) * | 2009-02-12 | 2009-12-30 | 王奕彤 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104565422A (en) | 2015-04-29 |
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