CN109764173A - A kind of high-pressure ball valve with redundancy packing seal structure - Google Patents
A kind of high-pressure ball valve with redundancy packing seal structure Download PDFInfo
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- CN109764173A CN109764173A CN201910193541.3A CN201910193541A CN109764173A CN 109764173 A CN109764173 A CN 109764173A CN 201910193541 A CN201910193541 A CN 201910193541A CN 109764173 A CN109764173 A CN 109764173A
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- 238000012856 packing Methods 0.000 title claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 56
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 21
- 239000010439 graphite Substances 0.000 claims abstract description 21
- 239000012530 fluid Substances 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Taps Or Cocks (AREA)
- Gasket Seals (AREA)
Abstract
The present invention relates to a kind of high-pressure ball valve, specifically a kind of high-pressure ball valve with redundancy packing seal structure belongs to control valve for fluids technical field.It includes the first valve body and the second valve body, and a point front and back is successively arranged main seal structure and redundant seal structure between the first valve body and the second valve body；The main seal structure includes O-ring, the first sealed step and the first sealing cone, and O-ring surface is pressed into contact with the side of the first sealing cone, the bottom face of the first sealed step and the first sealed step respectively；The redundant seal structure includes graphite annulus, the second sealed step and the second sealing cone, and graphite ring surface is pressed into contact with the side of the second sealing cone, the bottom face of the second sealed step and the second sealed step respectively.Double-channel sealing structure is used between valve body of the invention, first of O-ring sealing, the sealing of second graphite annulus, at low cost, sealing performance is reliable, has wide range of applications.
Description
Technical field
The present invention relates to a kind of high-pressure ball valve, specifically a kind of high-pressure ball valve with redundancy packing seal structure,
Belong to control valve for fluids technical field.
Background technique
In industries such as petrochemical industry, water conservancy, electric power, coal chemical industry, steel, pipeline transportations, ball valve is widely used, and is mainly used for
Cutting shunts and changes medium flow direction, and ball valve is mainly characterized by that structure is simple, sealed reliable, easy to maintenance, flow resistance is small, operation
It is convenient, it is also applied for the bad working environments such as high pressure-temperature.
Leakage, valve are more or less had in industries, media such as petrochemical industry, coal chemical industry, the pipeline transportations of ball valve application
Leakage is divided to two kinds, and interior leakage and leakage, interior leakage refer to that trim is not tight seal, and after valve is closed, still has medium to flow in the duct
Dynamic, leakage refers to media leaks into valve external environment, and two kinds of leakage contributions are different, and consequence caused by leakage is often than interior
It leaks more serious.For some poisonous and hazardous high-risk media (benzene, vinyl chloride, acrylonitrile, phosgene etc.), once it leaks into outside pipeline
Face can pollute the environment on periphery, threaten to the life and health of the people on periphery, and the weight such as explosion can even occurs in some
Major break down brings about great losses to national property, and ball valve is widely used in these industries, and accounting is larger, for it is inflammable and explosive,
Medium that is toxic or having radiation leaks outside even more unallowable, thus ball valve must have more reliable sealing performance.
The leakage of valve is embodied in two places, and one is the sealings at stuffing-box, and one is close between the valve body of left and right
Envelope, for the occasion (such as high temperature and pressure, poisonous medium, inflammable and explosive medium etc.) of height harm, the sealing performance of valve
It must assure that medium cannot leak outside, such as left valve barrel and right valve barrel junction, previous common metal wound gasket, metal ring pads, tooth form
Pad, Corrugation pad etc. guarantee the sealing performance of valve.
But metal gasket has following defect:
1. pair sealing surface machining accuracy and matching requirements are relatively high, magnitude of interference is bigger at sealing surface in design, in installation process,
The power that bolt and nut is added between the valve body of left and right is unbalanced, may result in metal gasket unbalance stress, it could even be possible to be squeezed it is bad,
So very high to operator's requirement in process and installation process, otherwise sealing performance be cannot be guaranteed, and increase simultaneously
The manufacturing cost of valve；
2. sealing surface magnitude of interference is bigger and processes bring error, so that metal gasket installation site cannot be protected accurately
Card, discontinuity, it is easy to it is excessive by pressure medium in certain, cause metal that plastic deformation occurs, so not being suitable for
High-pressure installation；
3. recyclable property is bad, metal gasket sealing is being tieed up by the sealing effect for being squeezed and deformed and reaching between metal
After repairing disassembly, valve body and metal gasket sealing surface have been deformed, nonelastic recovery, then the metal gasket installed or more renewed
Piece, sealing performance cannot be guaranteed.
Summary of the invention
It is an object of the present invention to overcome the above deficiencies, to provide a kind of height with redundancy packing seal structure
Pressure ball valve uses double-channel sealing structure between valve body, improves the sealing effect between valve body, improve can be recycled for valve
Service life guarantees equipment safety, stabilization, efficient operation, improves production efficiency.
According to technical solution provided by the invention, a kind of high-pressure ball valve with redundancy packing seal structure includes the first valve
Body and the second valve body, are linked into an integrated entity between the first valve body and the second valve body by connection component, it is characterized in that: the first valve body and
A point front and back is successively arranged main seal structure and redundant seal structure between second valve body；
The main seal structure includes O-ring, the first sealed step and the first sealing cone, and O-ring is located at the first valve body and
Between two valve bodies, the first valve body is equipped with the first sealing cone towards O-ring position, and the second valve body is equipped with the towards O-ring position
One sealed step, O-ring surface are pressed into contact with the first sealing cone, the bottom face of the first sealed step and the first sealing station respectively
The side of rank；
The redundant seal structure includes graphite annulus, the second sealed step and the second sealing cone, and graphite annulus is located at the first valve body
And second between valve body, the first valve body is equipped with the second sealing cone towards graphite annulus position, and the second valve body is towards graphite annulus position
Equipped with the second sealed step, graphite ring surface is pressed into contact with the second sealing cone, the bottom face of the second sealed step and respectively
The side of two sealed steps.
Further, connection component includes connecting screw and locking nut, and connecting screw front end leads to after passing through the second valve body
It crosses and is threaded on the first valve body, connecting screw rear end is connected through a screw thread locking nut, end in contact second before locking nut
Valve rear end face, connecting screw can connect the first valve body and the second valve body, and by locking nut by the first valve body and the
The locking of two valve bodies is integral.
Compared with the prior art the present invention has the advantage that
The invention has the advantages of simple structure, compactness and reasonable structure, and double-channel sealing structure, first of O-ring sealing, second are used between valve body
Graphite annulus sealing, at low cost, sealing performance is reliable, has wide range of applications；First of O-ring seals advantage: O-ring size is
Standardization, design is simple, and convenient for disassembly and assembly, low in cost, elasticity is good, static seal No leakage, long service life；Second forms stone
Mo Huan seals advantage: it is graphite annulus high temperature resistant, corrosion-resistant, O-ring is compensated for by the defect for using temperature (- 20 DEG C -220 DEG C), stone
Black ring resilience is good, and plasticity is strong, good airproof performance；Two seals design does not need to process valve body sealing surface and assembly crewman has very
Big requirement, and O-ring and molded graphite ring have elasticity, do not damage to valve body sealing surface, the quick side of valve maintenance replacement
Just, extend the service life of valve.
Detailed description of the invention
Fig. 1 is main view of the present invention.
Fig. 2 is main seal structure and redundant seal structural front view.
Description of symbols: the first valve body of 1-, the second valve body of 2-, 3-O type circle, 4- graphite annulus, 5- connecting screw, 6- locking
Nut, the first sealed step of 7-, the second sealed step of 8-, the first sealing cone of 9-, the second sealing cone of 10-.
Specific embodiment
The present invention will be further described in conjunction with the embodiment in attached drawing below:
As shown in Figure 1, passing through between first valve body 1 and the second valve body 2 the invention mainly comprises the first valve body 1 and the second valve body 2
Connection component links into an integrated entity.
The connection component includes connecting screw 5 and locking nut 6, and 5 front end of connecting screw passes through after passing through the second valve body 2
It is threaded on the first valve body 1,5 rear end of connecting screw is connected through a screw thread locking nut 6, end in contact before locking nut 6
Two valve bodies, 2 rear end face, connecting screw 5 can connect the first valve body 1 and the second valve body 2, and pass through locking nut 6 for the first valve
Body 1 and the second valve body 2 are locked integrally.
A point front and back is successively arranged main seal structure and redundant seal structure between first valve body 1 and the second valve body 2, normal
In the case of, main seal structure plays sealing function, and under main seal structure failure conditions, redundant seal structure seals.
As shown in Fig. 2, the main seal structure includes O-ring 3, the first sealed step 7 and the first sealing cone 9, O-ring
3 between the first valve body 1 and the second valve body 2, and the first valve body 1 is equipped with the first sealing cone 9, the second valve towards 3 position of O-ring
Body 2 is equipped with the first sealed step 7 towards 3 position of O-ring, and it is close that 3 surface of O-ring is pressed into contact with the first sealing cone 9, first respectively
Seal the bottom face of step 7 and the side of the first sealed step 7.
As shown in Fig. 2, the redundant seal structure includes graphite annulus 4, the second sealed step 8 and the second sealing cone 10,
For graphite annulus 4 between the first valve body 1 and the second valve body 2, the first valve body 1 is equipped with the second sealing cone towards 4 position of graphite annulus
10, the second valve body 2 is equipped with the second sealed step 8 towards 4 position of graphite annulus, and 4 surface of graphite annulus is pressed into contact with the second sealing respectively
The side of the conical surface 10, the bottom face of the second sealed step 8 and the second sealed step 8.
The course of work and working principle of the invention is as follows: high-pressure ball valve pressure medium is high, and medium is full of valve body, squeezes O
Type circle, in addition bolt and nut acts on the active force between valve body, O-ring, which is extruded, is filled in the first sealing cone, the first sealing
In the space that the side of the bottom face of step and the first sealed step is formed, good sealing function is played, O-ring sealing can reach
To 0 leakage.Graphite annulus not contact medium under normal circumstances, only by bolt and nut act on valve body between active force be compressed in
In the space that the side of two sealing cones, the bottom face of the second sealed step and the second sealed step is formed, sealing function is played,
When the medium O-ring for encountering high temperature or O-ring being made to fail does not seal, graphite annulus this seal together also extremely
It closes important, it is ensured that the medium in device will not leak outside.
The seal forms such as the relatively traditional metal wound gasket of the present invention, metal ring pads, dentiform gasket, Corrugation pad have following excellent
Point: easy to change, low in cost, of less demanding to processing and assembly crewman, two sealed structures make sealing performance more reliable,
Long service life, it is applied widely etc..
Claims (2)
1. a kind of high-pressure ball valve with redundancy packing seal structure, including the first valve body (1) and the second valve body (2), the first valve
It is linked into an integrated entity between body (1) and the second valve body (2) by connection component, it is characterized in that: the first valve body (1) and the second valve body
(2) a point front and back is successively arranged main seal structure and redundant seal structure between；
The main seal structure includes O-ring (3), the first sealed step (7) and the first sealing cone (9), and O-ring (3) is located at
Between first valve body (1) and the second valve body (2), the first valve body (1) is equipped with the first sealing cone (9) towards O-ring (3) position,
Second valve body (2) is equipped with the first sealed step (7) towards O-ring (3) position, and it is close that O-ring (3) surface is pressed into contact with first respectively
Seal the conical surface (9), the bottom face of the first sealed step (7) and the side of the first sealed step (7)；
The redundant seal structure includes graphite annulus (4), the second sealed step (8) and the second sealing cone (10), graphite annulus (4)
Between the first valve body (1) and the second valve body (2), the first valve body (1) is equipped with the second sealing cone towards graphite annulus (4) position
(10), the second valve body (2) is equipped with the second sealed step (8) towards graphite annulus (4) position, and graphite annulus (4) surface compresses respectively to be connect
Touch the side of the second sealing cone (10), the bottom face of the second sealed step (8) and the second sealed step (8).
2. a kind of high-pressure ball valve with redundancy packing seal structure as described in claim 1, it is characterized in that: the connection group
Part includes connecting screw (5) and locking nut (6), and connecting screw (5) front end is threadedly attached in after passing through the second valve body (2)
On first valve body (1), connecting screw (5) rear end is connected through a screw thread locking nut (6), end in contact second before locking nut (6)
Valve body (2) rear end face, connecting screw (5) can connect the first valve body (1) and the second valve body (2), and pass through locking nut (6)
First valve body (1) and the second valve body (2) locking is integral.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910193541.3A CN109764173A (en) | 2019-03-14 | 2019-03-14 | A kind of high-pressure ball valve with redundancy packing seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910193541.3A CN109764173A (en) | 2019-03-14 | 2019-03-14 | A kind of high-pressure ball valve with redundancy packing seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109764173A true CN109764173A (en) | 2019-05-17 |
Family
ID=66459177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910193541.3A Pending CN109764173A (en) | 2019-03-14 | 2019-03-14 | A kind of high-pressure ball valve with redundancy packing seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109764173A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202171026U (en) * | 2011-06-29 | 2012-03-21 | 福建菲达阀门有限公司 | Sealing structure for valve body and valve cover of valve ball |
| CN205226448U (en) * | 2015-12-15 | 2016-05-11 | 天津富赛克流体控制设备有限公司 | No spring -loaded's fixed ball valve of soft seal |
| CN207034371U (en) * | 2017-07-10 | 2018-02-23 | 浙江搏正铜业有限公司 | A kind of die heater special-purpose high temperature ball valve |
| CN109114249A (en) * | 2017-06-22 | 2019-01-01 | 上海弘盛特种阀门制造股份有限公司 | A kind of high temperature regulation ball valve |
| CN209705371U (en) * | 2019-03-14 | 2019-11-29 | 无锡智能自控工程股份有限公司 | A kind of high-pressure ball valve with redundancy packing seal structure |
-
2019
- 2019-03-14 CN CN201910193541.3A patent/CN109764173A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202171026U (en) * | 2011-06-29 | 2012-03-21 | 福建菲达阀门有限公司 | Sealing structure for valve body and valve cover of valve ball |
| CN205226448U (en) * | 2015-12-15 | 2016-05-11 | 天津富赛克流体控制设备有限公司 | No spring -loaded's fixed ball valve of soft seal |
| CN109114249A (en) * | 2017-06-22 | 2019-01-01 | 上海弘盛特种阀门制造股份有限公司 | A kind of high temperature regulation ball valve |
| CN207034371U (en) * | 2017-07-10 | 2018-02-23 | 浙江搏正铜业有限公司 | A kind of die heater special-purpose high temperature ball valve |
| CN209705371U (en) * | 2019-03-14 | 2019-11-29 | 无锡智能自控工程股份有限公司 | A kind of high-pressure ball valve with redundancy packing seal structure |
Non-Patent Citations (1)
| Title |
|---|
| 成大先: "《机械设计手册 第4卷》", 30 April 1998, 化学工业出版社, pages: 17 - 624 * |
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