CN209705371U - 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
- Publication number
- CN209705371U CN209705371U CN201920327263.1U CN201920327263U CN209705371U CN 209705371 U CN209705371 U CN 209705371U CN 201920327263 U CN201920327263 U CN 201920327263U CN 209705371 U CN209705371 U CN 209705371U
- Authority
- CN
- China
- Prior art keywords
- valve body
- seal structure
- sealed step
- valve
- ring
- 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.)
- Active
Links
Abstract
The utility model 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 the valve body of the utility model, 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 utility model relates to a kind of high-pressure ball valve, specifically a kind of smash with redundancy packing seal structure
Valve belongs 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, installs
Cheng Zhong, 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 by
Squeeze it is bad, so in process and installation process to operator require it is very high, otherwise sealing performance cannot be guaranteed, simultaneously
Increase 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 accurate
Guarantee, discontinuity, it is easy to it is excessive by pressure medium in certain, cause metal that plastic deformation occurs, so not applicable
In high-pressure installation；
3. recyclable property is bad, metal gasket sealing is the sealing effect for being squeezed and deformed and reaching between relying on metal,
After repair demolition, valve body and metal gasket sealing surface have been deformed, nonelastic recovery, then the metal installed or more renewed
Gasket, sealing performance cannot be guaranteed.
Summary of the invention
In place of the purpose of this utility model is to overcome above-mentioned deficiency, to provide a kind of with redundancy packing seal structure
High-pressure ball valve, double-channel sealing structure is used between valve body, improves the sealing effect between valve body, improves the recyclable of valve
Service life guarantees equipment safety, stabilization, efficient operation, improves production efficiency.
According to technical solution provided by the utility model, a kind of high-pressure ball valve with redundancy packing seal structure includes the
One 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
A point front and back is successively arranged main seal structure and redundant seal structure between 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 is located at the first valve body
And second between valve body, the first valve body is equipped with the first sealing cone towards O-ring position, and the second valve body is set towards O-ring position
There is the first sealed step, it is close that O-ring surface is pressed into contact with the first sealing cone, the bottom face of the first sealed step and first respectively
Seal the side of step；
The redundant seal structure includes graphite annulus, the second sealed step and the second sealing cone, and graphite annulus is located at first
Between valve body and the second 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 is equipped with the second sealed step, and graphite ring surface is pressed into contact with the bottom face of the second sealing cone, the second sealed step respectively
With the side of the second sealed step.
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 utility model has the advantage that
The utility model structure is simple, compact, reasonable, and double-channel sealing structure is used between valve body, and first of O-ring is close
Envelope, the sealing of second graphite annulus, at low cost, sealing performance is reliable, has wide range of applications；First of O-ring seals advantage: O-shaped
It is normalized to enclose size, design is simple, and convenient for disassembly and assembly, low in cost, elasticity is good, static seal No leakage, long service life；The
Two molded graphite rings seal advantage: it is graphite annulus high temperature resistant, corrosion-resistant, it compensates for O-ring and is used temperature (- 20 DEG C -220 DEG C)
Defect, elasticity is good for graphite annulus, and plasticity is strong, good airproof performance；Two seals design does not need to process valve body sealing surface and fill
There is very big requirement with personnel, and O-ring and molded graphite ring have elasticity, do not damage to valve body sealing surface, valve maintenance
It replaces efficient and convenient, extends the service life of valve.
Detailed description of the invention
Fig. 1 is the utility model main view.
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 utility model will be further described in conjunction with the embodiment in attached drawing below:
As shown in Figure 1, the utility model mainly includes the first valve body 1 and the second valve body 2, the first valve body 1 and the second valve body 2
Between linked into an integrated entity by connection component.
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 utility model are as follows: high-pressure ball valve pressure medium is high, and medium is full of valve body, squeezes
O-ring is pressed, 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, first close
In the space that the side of the bottom face and the first sealed step that seal step is formed, good sealing function is played, O-ring seals energy
Reach 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 second sealing cone, the bottom face of the second sealed step and the second sealed step is formed, sealing function is played
Can, when the medium O-ring for encountering high temperature or O-ring being made to fail does not seal, this sealing together of graphite annulus
It is most 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 utility model, metal ring pads, dentiform gasket, Corrugation pad, just like
Lower advantage: easy to change, low in cost, of less demanding to processing and assembly crewman, two sealed structures make sealing performance more
Reliably, 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 |
|---|---|---|---|
| CN201920327263.1U CN209705371U (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 |
|---|---|---|---|
| CN201920327263.1U CN209705371U (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 |
|---|---|
| CN209705371U true CN209705371U (en) | 2019-11-29 |
Family
ID=68644196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920327263.1U Active CN209705371U (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) | CN209705371U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109764173A (en) * | 2019-03-14 | 2019-05-17 | 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 CN201920327263.1U patent/CN209705371U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109764173A (en) * | 2019-03-14 | 2019-05-17 | 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201503332U (en) | Packing box for hydraulic test on floating tube sheet end of floating head type heat exchanger | |
| CN104565618B (en) | A kind of high-temperature flange containing soft graphite metal Ω shape tooth composite pad seals structure | |
| CN105090518A (en) | Corrugated pipe type dry gas seal device and seal method | |
| CN209705371U (en) | A kind of high-pressure ball valve with redundancy packing seal structure | |
| CN204420390U (en) | A kind of novel flange sealing configuration | |
| CN207122648U (en) | A kind of valve packing sealing structure | |
| CN201059400Y (en) | Sealing flange | |
| CN109764173A (en) | A kind of high-pressure ball valve with redundancy packing seal structure | |
| CN103982674A (en) | Top-mounting fixation ball valve | |
| CN208261360U (en) | Flange sealing surface leaks blow device | |
| CN206175672U (en) | But self tightening sealing valve of evacuation | |
| CN206274086U (en) | A kind of air operated reversing valve | |
| CN103277551B (en) | Corrugated pipe sealing rupture disk device | |
| CN208886115U (en) | A kind of bellows valve rod seal apparatus | |
| CN206637172U (en) | A kind of band monitoring and the pressure balancing type expansion joint of bypass straight tube of safeguard function | |
| CN209524202U (en) | A kind of flange sealing structure | |
| CN106287103B (en) | Permanent magnetism liquid capsule presses emergent plugging device and its emergent method for blocking | |
| CN207178723U (en) | A kind of floating type hard sealing structure in metal valve | |
| CN2493906Y (en) | Combined float seal structure for double float pipe board arranged pipe type heat-exchanger | |
| CN218935340U (en) | Spring energy storage sealing washer metal hard seal fixed ball valve | |
| CN210178929U (en) | PTFE bellows integrated into one piece mechanical seal | |
| CN217355690U (en) | Multiple sealing leakage-proof high-temperature high-pressure check valve | |
| CN211696825U (en) | Air tightness checking device for large-diameter valve | |
| CN203880130U (en) | Fixed ball valve for top assembling | |
| CN220583698U (en) | Hydraulic test tool for narrow sealing surface booster shell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |