CN108692038A - A kind of Novel ultralow-temperature shut-off valve and its operational method - Google Patents
A kind of Novel ultralow-temperature shut-off valve and its operational method Download PDFInfo
- Publication number
- CN108692038A CN108692038A CN201810519698.6A CN201810519698A CN108692038A CN 108692038 A CN108692038 A CN 108692038A CN 201810519698 A CN201810519698 A CN 201810519698A CN 108692038 A CN108692038 A CN 108692038A
- Authority
- CN
- China
- Prior art keywords
- valve
- ultralow
- temperature shut
- valve rod
- novel ultralow
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 8
- 230000000712 assembly Effects 0.000 claims abstract description 24
- 238000000429 assembly Methods 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 239000000945 filler Substances 0.000 claims abstract description 19
- 239000004078 cryogenic material Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 4
- 230000013011 mating Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 8
- 230000006378 damage Effects 0.000 abstract description 3
- 238000012856 packing Methods 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009466 transformation Effects 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
-
- 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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
Abstract
The invention discloses a kind of Novel ultralow-temperature shut-off valve and its operational methods, mainly solve filler existing in the prior art and are immersed in super-low liquid easy leakage for a long time;Resistance to ultralow adiabator is costly;The problem of cryogenic globe valve airtight stability on dynamic apparatus is poor, and high torque closing easily causes sealing face damage.The present invention is installed on by using a kind of Novel ultralow-temperature shut-off valve, a valve body, a bonnet assemblies on valve body;One valve rod, by being threaded into bonnet assemblies and being matched with bonnet assemblies, bonnet assemblies are equipped with the valve deck conical surface with threaded stem coupling part lower end;One handwheel is fixedly connected on the technical solution on valve rod by hand wheel nut, elastic washer one.So that valve deck reversely seals when valve opening, packing leaking is prevented;Greatly reduce cost;And on dynamic apparatus, micro- leakage and automatic opening are prevented;It simultaneously closes off torque and reduces 50%, improve sealing pad life, be suitable for LNG, LO2, LN2, LAr, ultralow temperature pipeline and running equipment.
Description
Technical field
The present invention relates to valve field, it is related specifically to a kind of Novel ultralow-temperature shut-off valve and its operational method.
Background technology
Ultralow temperature shut-off valve is the cut-off device being applied under worst cold case, and general working temperature is below low at -100 DEG C
Temperature industrial occupies an important position in industrial circle.Ultralow temperature shut-off valve is suitable for suitable for LNG, LO2, LN2, LAr, ultralow
Warm pipeline and running equipment and Class150~Class900, PN16~PN150 various pipelines on, for blocking or on-tube
Medium in road.The type of drive of ultralow temperature shut-off valve be manually, gear drive, pneumatically or electrically.Ultralow temperature shut-off valve is general
Using flanged joint, butt welding connection can also be used.
Ultralow temperature shut-off valve have compact-sized, reasonable design, valve is rigidly good, channel is smooth, service life is long, sealing
Reliably, the features such as flexible is operated.The applying working condition of ultralow temperature shut-off valve is at -100 DEG C hereinafter, the requirement to material is more stringent.
At the working temperature, material should not generate black brittleness destruction, and materials microstructure structure should be stablized, be drawn with preventing material phase transformation
Play volume change;When using welding structure, the welding performance of material will be got well, and weld seam has higher reliability at low temperature;Valve
Door frequently opens and closes under worst cold case, and the parts such as flap, valve rod, valve seat should avoid phenomena such as card resistance, occlusion are with scratch.
Ultralow temperature cut-off in the prior art, filler are immersed in super-low liquid for a long time, are easy to cause leakage;Its filler
Generally resistance to ultralow adiabator, costly, cost is higher;General cryogenic globe valve is on dynamic apparatus, airtight stability
Poor, high torque closing easily causes sealing face damage, easily reduces the service life of gasket, influences service life.Therefore it needs to existing
There is the ultralow temperature shut-off valve in technology to be improved, to improve its quality and service life.
Invention content
One of the object of the invention is to provide a kind of Novel ultralow-temperature shut-off valve, including a valve body, and a bonnet assemblies are installed on
On the valve body;One valve rod, by being threaded into bonnet assemblies and being matched with bonnet assemblies, the bonnet assemblies and the valve
Bar is threadedly coupled part lower end and is equipped with the valve deck conical surface and a handwheel, is fixedly connected on by hand wheel nut, elastic washer one described
On valve rod.The equipment has:On the one hand, valve deck reversely seals when valve opening, to prevent filler to be immersed in ultralow temperature liquid for a long time
In body, it is easy to cause leakage;Secondly, cost is greatly reduced;Furthermore flap is micro- to open collocation structure, on dynamic apparatus, prevents
Micro- leakage and automatic opening;It simultaneously closes off torque and reduces 50%, improve sealing pad life.
The second object of the present invention is to provide a kind of a kind of Novel ultralow-temperature section corresponding with one of technical problem is solved
The only operational method of valve.
To reach one of above-mentioned purpose, the present invention uses following technical scheme:
A kind of Novel ultralow-temperature shut-off valve, including:One valve body 12;One bonnet assemblies 8, are installed on the valve body 12;One
Valve rod 9, by being threaded into bonnet assemblies 8 and being matched with bonnet assemblies 8, the bonnet assemblies 8 connect with 9 screw thread of the valve rod
Socket part divides lower end to be equipped with the valve deck conical surface 8.1 and a handwheel 3, and the valve is fixedly connected on by hand wheel nut 1, elastic washer 1
On bar 9.Had using the technical solution:Valve deck reversely seals when valve opening, to prevent filler to be immersed in ultralow temperature liquid for a long time
In body, it is easy to cause leakage;Secondly, cost is greatly reduced;Furthermore flap is micro- to open collocation structure, on dynamic apparatus, prevents
Micro- leakage and automatic opening;It simultaneously closes off torque and reduces 50%, improve the technique effect of sealing pad life.
According to one embodiment of present invention, wherein the middle upper end of the valve rod 9 is fixed with clamp nut 4 and and tight spiral shell
Mother 5;9 lower end of the valve rod is connected with flap 11 by locking nut 10;The valve rod 9 is connected by screw 6, elastic washer 27
Valve body 12 is connect in bonnet assemblies 8.
According to one embodiment of present invention, wherein the upper end of the locking nut 10 is equipped with the nut conical surface 10.1.Using
This technical solution, when valve rod 9 drive locking nut 10 move upwards, until the nut conical surface 10.1 contacts realization with the valve deck conical surface 8.1
When sealing, i.e. valve opening, valve deck reversely seals, and causes to let out so as to effectively prevent filler to be immersed in for a long time in super-low liquid
Leakage, while being also possible to prevent a large amount of cryogenic medias and entering filler.
According to one embodiment of present invention, wherein 9 bottom of valve rod has by locking nut 10 and 11 stationary positioned of flap
Elastic compensating component 11.1.Elastic compensating component 11.1 is positioned by 9 bottom of valve rod, locking nut 10 and flap 11 are fixed, and is provided
Certain balancing force needs torque smaller, close moment reduces 50% compared with the prior art when the valve is closed;It shakes by force when having
Or abnormal operation, when causing valve is micro- to open, elastic compensating component 11.1, which will provide reset force, makes valve close sealing.
According to one embodiment of present invention, wherein installation site of the valve rod 9 in clamp nut 4 and fastening screw nut 5
Around there is filler, the filler to be made of non-super cryogenic material, the non-super cryogenic material be rubber.Non-super cryogenic material
It uses, greatly reduces cost, also having prevents media leaks guiding role;Meanwhile rubber seal effect is preferable, having prevents
The effect that media leaks are oriented to.
Two the technical solution adopted in the present invention to solve above-mentioned technical problem are as follows:
1. valve opening:When rotation hand wheel 3 counterclockwise, handwheel 3 is made to be rotated with ovable valve stem 9, to make flap 11 transport upwards
It is dynamic, until being detached with the sealing surface of valve body 12, to realize valve opening;
Valve rod 9 drives locking nut 10 to move upwards, until the nut conical surface 10.1 contacts realization sealing with the valve deck conical surface 8.1.
2. valve is closed:When rotating clockwise handwheel 3, handwheel 3 is made to be rotated with ovable valve stem 9, to make flap 11 transport downwards
It is dynamic, to make flap 11 and the sealing surface of valve body 12 be bonded completely, realize that valve is closed.
Elastic compensating component 11.1 is positioned by 9 bottom of valve rod, and locking nut 10 and flap 11 are fixed, and certain compensation is provided
Power.
The beneficial effects of the invention are as follows:
One, a kind of Novel ultralow-temperature shut-off valve of the present invention, when valve opening, valve deck reversely realizes sealing, can effectively prevent
Only
Filler, which is immersed in for a long time in super-low liquid, to be caused to leak, while being also possible to prevent a large amount of cryogenic medias and being entered filler.
Two, a kind of Novel ultralow-temperature shut-off valve of the present invention, filler use non-ultralow temperature material, and optimal is rubber, is dropped significantly
Low cost, also having prevents media leaks guiding role;And rubber, sealing effect is good, can increase the leakproofness of stop valve.
Three, a kind of Novel ultralow-temperature shut-off valve of the present invention, opens collocation structure using flap is micro-, when the valve is closed, needs
Torque is smaller, and close moment reduces 50% compared with the prior art;When have it is strong shake or when abnormal operation causes valve is micro- to open, elasticity
Compensating unit, which will provide reset force, makes valve close sealing, on dynamic apparatus, can prevent micro- leakage and automatic opening;It improves close
The packing service life.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is a kind of sectional view of Novel ultralow-temperature shut-off valve of the present invention.
Fig. 2 is the partial enlarged view of the valve body of Fig. 1.
In attached drawing
1, hand wheel nut 2, elastic washer 1, handwheel
4, clamp nut 5, fastening screw nut 6, screw
7, elastic washer 28, bonnet assemblies 8.1, the valve deck conical surface
9, valve rod 10, locking nut 10.1, the nut conical surface
11, flap 11.1, elastic compensating component 12, valve body
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
Embodiment is further elaborated.It is real to should be appreciated that the specific embodiments described herein are merely illustrative of the present invention
Example is applied, embodiment is not intended to limit the present invention.
As shown in Figure 1 and Figure 2, a kind of Novel ultralow-temperature shut-off valve, including:One valve body 12;One bonnet assemblies 8, are installed on institute
It states on valve body 12;One valve rod 9, by being threaded into bonnet assemblies 8 and being matched with bonnet assemblies 8, the bonnet assemblies 8 and institute
It states valve rod 9 and is threadedly coupled part lower end equipped with the valve deck conical surface 8.1;And a handwheel 3, it is solid by hand wheel nut 1, elastic washer 1
Surely it is connected on the valve rod 9.When rotation hand wheel 3 counterclockwise, handwheel 3 is made to be rotated with ovable valve stem 9, to make flap 11 transport upwards
It is dynamic, until being detached with the sealing surface of valve body 12, to realize valve opening.Using this technical solution, in valve opening, valve deck
It can realize reversed sealing, cause to leak to prevent filler to be immersed in for a long time in super-low liquid, and then to a certain extent extend
Its service life.
The middle upper end of valve rod 9 is fixed with clamp nut 4 and fastening screw nut 5;9 lower end of the valve rod is connected by locking nut 10
It is connected to flap 11;The valve rod 9 connects valve body 12 in bonnet assemblies 8 by screw 6, elastic washer 27.Locking nut 10 it is upper
End is equipped with the nut conical surface 10.1.Using above-mentioned technical proposal, when valve rod 9 drives locking nut 10 to move upwards, until the nut conical surface
10.1 contacted with the valve deck conical surface 8.1 realization sealing, i.e., valve opening when, valve deck reversely seals, so as to effectively so as to
Preventing filler to be immersed in for a long time in super-low liquid causes to leak, while being also possible to prevent a large amount of cryogenic medias and entering filler.
9 bottom of valve rod passes through locking nut 10 and the flexible compensating unit of 11 stationary positioned of flap 11.1.Elastic compensating portion
Part 11.1 is positioned by 9 bottom of valve rod, locking nut 10 and flap 11 are fixed.As a result of elastic compensating component 11.1 by valve rod
The positioning of 9 bottoms, 11 fixed technical solution of locking nut 10 and flap so that certain balancing force is provided, when the valve is closed,
Need torque smaller, close moment reduces 50% compared with the prior art;When have it is strong shake or when abnormal operation causes valve is micro- to open,
Elastic compensating component 11.1, which will provide reset force, makes valve close sealing;Meanwhile flap is micro- opens collocation structure, in dynamic apparatus
On, micro- leakage and automatic opening can be prevented;It simultaneously closes off torque and reduces 50%, improve sealing pad life.
Valve rod 9 has filler, the non-ultralow temperature of the filler around the installation site of clamp nut 4 and fastening screw nut 5
Material is made, and the non-super cryogenic material is rubber.The use of non-super cryogenic material greatly reduces cost, and also having prevents
Media leaks guiding role;Meanwhile rubber seal effect is preferable, has the function of that media leaks is prevented to be oriented to..
Based on Novel ultralow-temperature shut-off valve, operational method, including it is as follows:
1. valve opening:When rotation hand wheel 3 counterclockwise, handwheel 3 is made to be rotated with ovable valve stem 9, to make flap 11 transport upwards
It is dynamic, until being detached with the sealing surface of valve body 12, to realize valve opening;
Valve rod 9 drives locking nut 10 to move upwards, until the nut conical surface 10.1 contacts realization sealing with the valve deck conical surface 8.1.
2. valve is closed:When rotating clockwise handwheel 3, handwheel 3 is made to be rotated with ovable valve stem 9, to make flap 11 transport downwards
It is dynamic, to make flap 11 and the sealing surface of valve body 12 be bonded completely, realize that valve is closed.
Elastic compensating component 11.1 is positioned by 9 bottom of valve rod, and locking nut 10 and flap 11 are fixed, and certain compensation is provided
Power.
Although the illustrative specific implementation mode of the present invention is described above, in order to the technology of the art
Personnel are it will be appreciated that the present invention, but the present invention is not limited only to the range of specific implementation mode, to the common skill of the art
For art personnel, as long as long as various change the attached claims limit and determine spirit and scope of the invention in, one
The innovation and creation using present inventive concept are cut in the row of protection.
Claims (11)
1. a kind of Novel ultralow-temperature shut-off valve, including:
One valve body (12);
One bonnet assemblies (8) are installed on the valve body (12);
One valve rod (9) matches installation, the bonnet assemblies (8) and the valve rod (9) mating connection portion with bonnet assemblies (8)
Lower end is divided to be equipped with the valve deck conical surface (8.1), and
One handwheel (3) is fixedly connected on by hand wheel nut (1), elastic washer one (2) on the valve rod (9).
2. a kind of Novel ultralow-temperature shut-off valve according to claim 1, wherein:
It is to be threaded into that the valve rod (9), which matches mounting means with bonnet assemblies (8),.
3. a kind of Novel ultralow-temperature shut-off valve according to claim 1, wherein:
The middle upper end of the valve rod (9) is fixed with clamp nut (4) and fastening screw nut (5);
Valve rod (9) lower end is connected with flap (11) by locking nut (10).
4. according to a kind of any Novel ultralow-temperature shut-off valves of claim 1-3, wherein:
The valve rod (9) connects valve body (12) and bonnet assemblies (8) by screw (6), elastic washer two (7).
5. a kind of Novel ultralow-temperature shut-off valve according to claim 4, wherein:
The screw (6) is hex screw.
6. according to a kind of any Novel ultralow-temperature shut-off valves of claim 1-3, wherein:
Valve rod (9) bottom is equipped with elastic compensating component (11.1).
7. a kind of Novel ultralow-temperature shut-off valve according to claim 6, wherein:
The elastic compensating component (11.1) is fixed positioned in valve rod (9) bottom jointly by locking nut (10) and flap (11)
Portion.
8. according to a kind of any Novel ultralow-temperature shut-off valves of claim 1-3, wherein:
The valve rod (9) has filler around the installation site of clamp nut (4) and fastening screw nut (5).
9. a kind of Novel ultralow-temperature shut-off valve according to claim 8, wherein:
The filler is made of non-super cryogenic material.
10. a kind of Novel ultralow-temperature shut-off valve according to claim 9, wherein:
The non-super cryogenic material is rubber.
11. as follows according to a kind of Novel ultralow-temperature shut-off valve, operational method described in claim 1-10:
1. valve opening:When rotation hand wheel (3) counterclockwise, handwheel (3) band ovable valve stem (9) is made to rotate, to make flap (11) to
Upper movement, until being detached with the sealing surface of valve body (12), to realize valve opening;
2. valve is closed:When rotating clockwise handwheel (3), make handwheel (3) band ovable valve stem (9) rotate, to make flap (11) to
Lower movement realizes that valve is closed to make flap (11) and the sealing surface of valve body (12) be bonded completely.
Elastic compensating component (11.1) is positioned by valve rod (9) bottom, and locking nut (10) and flap (11) are fixed, provide certain benefit
Repay power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810519698.6A CN108692038A (en) | 2018-05-28 | 2018-05-28 | A kind of Novel ultralow-temperature shut-off valve and its operational method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810519698.6A CN108692038A (en) | 2018-05-28 | 2018-05-28 | A kind of Novel ultralow-temperature shut-off valve and its operational method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108692038A true CN108692038A (en) | 2018-10-23 |
Family
ID=63847908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810519698.6A Pending CN108692038A (en) | 2018-05-28 | 2018-05-28 | A kind of Novel ultralow-temperature shut-off valve and its operational method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108692038A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566679A (en) * | 2019-09-24 | 2019-12-13 | 张家港富瑞阀门有限公司 | Stop valve for hydrogen |
| CN113983214A (en) * | 2021-10-20 | 2022-01-28 | 上海沪东造船阀门有限公司 | Manual switch ultra-low temperature stop check valve |
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| CN205260877U (en) * | 2015-12-17 | 2016-05-25 | 凯喜姆阀门有限公司 | Stop valve with anti -shake ejector half valve clack |
| CN208381335U (en) * | 2018-05-28 | 2019-01-15 | 张家港富瑞阀门有限公司 | A kind of Novel ultralow-temperature shut-off valve |
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| CN104373603A (en) * | 2014-10-16 | 2015-02-25 | 开封瑞科阀门有限公司 | Hidden rod type ultralow temperature stop valve with upper sealing structure, lower sealing structure and pressure relief device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113983214A (en) * | 2021-10-20 | 2022-01-28 | 上海沪东造船阀门有限公司 | Manual switch ultra-low temperature stop check valve |
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