CN202371204U - Double-cone metal seal valve - Google Patents
Double-cone metal seal valve Download PDFInfo
- Publication number
- CN202371204U CN202371204U CN2011205348592U CN201120534859U CN202371204U CN 202371204 U CN202371204 U CN 202371204U CN 2011205348592 U CN2011205348592 U CN 2011205348592U CN 201120534859 U CN201120534859 U CN 201120534859U CN 202371204 U CN202371204 U CN 202371204U
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- China
- Prior art keywords
- valve
- seal
- ring
- ball
- bipyramid
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- Expired - Fee Related
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Abstract
The utility model provides a double-cone metal seal valve which comprises a valve body with a runner, wherein a valve ball is arranged in the runner, the valve ball is connected with a valve seat, a seal pair structure is arranged between the valve ball and the valve seat, e represents the radial eccentricity of the rotation center of the valve ball and the center of the runner of the valve body, H represents the axial eccentricity of the rotation center of the valve ball and the sealing surface of the valve seat, and Alfa represents the included angle between the cone central line of the seal pair and the central line of the runner. The double-cone metal seal valve has the advantages of good sealing performance, high temperature resistance, long service life, easiness in manufacturing, convenience in maintenance, attractive appearance, compact structure and the like.
Description
Technical field
The utility model relates to a kind of ball valve, and particularly a kind of have a bipyramid metallic seal valve that moment of torsion is little, be applicable to all temps.
Background technique
At present, what ordinary ball valve adopted is the piston valve stand structure, and mainly there is following problem in the piston valve stand structure:
1: the Sealing between valve seat and the valve body mainly adopts non-metal components such as O shape circle, Expanded graphite; Because the required pretension specific pressure of Expanded graphite is high, and installation, fragile when using, so difficulty is set up the piston seal chamber; So be prone to cause valve to reveal, open and close torque is bigger simultaneously.And O type circle can not be used for worst hot case, so use occasion is restricted.
2: under the effect of medium power and spring force, its sealing surface of seat is near the ball seal face.Therefore, valve is when opening and closing, and there is friction all the time in sealing pair, so its sealing surface is prone to scratch.Therefore, such valve is seriously undermined working life.
The model utility content
The utility model technical problem to be solved is, overcomes the problem that exists in the existing technology, provides that a kind of to have a moment of torsion little, high temperature resistant, good seal performance, the bipyramid metallic seal valve that reliability is high.
For the technological scheme that addresses the above problem the utility model is such:
Bipyramid metallic seal valve; Comprise the valve body that has runner, be provided with valve ball in the valve flowing channel, valve ball is connected with valve seat; Be provided with the sealing pair structure between valve ball and the valve seat; The radial disbalance e at valve ball rotating center and valve flowing channel center, the axial eccentric H of valve ball rotating center and sealing surface of seat, and the angle of sealing pair circular cone center line and runner center line.
Valve seat is for being fixed on the valve body through welding or expanded joint mode.
Said sealing pair structure is made up of pad, seal ring, trim ring, retaining ring, and pad is enclosed within on the valve ball, and the pad outside is a seal ring, and the seal ring outside is a trim ring, is connected on the valve ball through retaining ring at last, and retaining ring is connected on the valve ball through screw.
Said seal ring is nonmetallic material such as PTFE, RPTFE, NYLON, PEEK, rubber.
Said seal ring is the multi-layer sealing ring that stainless steel folder Expanded graphite is processed.
Seal ring is that all-metal material is processed.
Beneficial effect is because of there are eccentric amount e in valve ball rotating center and valve flowing channel center, so during valve opening, the valve ball sealing surface can hightail sealing surface of seat.Do not have friction when making valve switch between two sealing surfaces, when having overcome the ordinary ball valve keying, have the problem of friction between the sealing surface all the time; Effectively reduce the open and close torque of valve; Increased the working life of valve, and stuck phenomenon can not occur, so it has the incomparable advantage of ordinary ball valve under worst hot case; Simultaneously; Sealing pair circular cone center line of the utility model and valve flowing channel center line are designed with the eccentric α in angle again, have so promptly improved the valve seal performance, have improved the technology capability of valve again.
Description of drawings
Specify the utility model below in conjunction with accompanying drawing and embodiment;
Fig. 1 is the described bipyramid metallic seal of a utility model valve arrangement schematic representation.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Fig. 3 is three eccentric structure schematic representation.
Fig. 4 is the described ring structure schematic representation of the utility model.
Fig. 5 is the secondary schematic representation of throwing off of the described bipyramid metallic seal of the utility model valve seal.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1, Fig. 2, the utility model mainly is made up of main parts size such as valve body 1, dunnage 2, valve ball 3, screw 4, valve rod 5, Stuffing box 6, support 7, pad 8, seal ring 9, trim ring 10, retaining ring 11 and valve seats 12.Valve ball 3 is supported by dunnage 2 (each up and down).Valve rod 5 is connected with transmitting torque through flat groove with valve ball 3.Valve seat 12 is fixed in the valve body through modes such as welding or expanded joints with valve body 1, and guarantees that medium can be along valve seat cylindrical seepage.Seal ring 9, trim ring 10 and retaining ring 11 usefulness screws 4 are connected on the valve ball 3, make it into as a wholely, between seal ring 9 and valve ball 3, be provided with pad 8 to increase sealing reliability.
Referring to Fig. 4, the seal ring 9 of the utility model is to get through rotary cutting around the axis that a drift angle is the cone of β, and its sectional shape is oval.In like manner, the sealing surface of seat of pairing also is to get through rotary cutting around the axis that a drift angle is the cone of β with it.
Referring to Fig. 3, when valve was in closed condition, there were radial disbalance e in valve ball rotating center and valve flowing channel centre line L, and there are axial eccentric H in valve ball rotating center o and sealing surface of seat, and there are angle in sealing pair circular cone center line and runner center line.Each eccentric span is e:1～200mm, H:1～1000mm, α: 1 °～180 °.
As shown in the figure: line segment a is to be starting point with the rotating center, is the straight line of terminal point apart from valve flowing channel center line point farthest on the intersection that overlaps with two sealing surfaces.Line segment b is to be starting point with the rotating center, is the straight line of terminal point apart from the nearest point of valve flowing channel center line on the intersection that overlaps with two sealing surfaces.Can find out that line segment a is longer than line segment b.In like manner, line segment c is longer than line segment d.Line segment a, line segment b, line segment c, line segment d are the cursor of valve ball.So can be as drawing a conclusion: when inverse clock rotates valve ball, promptly during valve opening, seal ring 9 will hightail sealing surface of seat, prevent the phase mutual friction (referring to Fig. 5) between the sealing pair.When clockwise rotates valve ball, promptly during throttle down, seal ring 9 will be close to sealing surface of seat gradually; Keep sealing until valve; This moment, seal ring also had enough pretension surpluses, so when wearing and tearing appear in seal ring, only need that valve ball is rotated further several angle and can guarantee valve seal.
Common hard seal ball valve sealing pair is spheric structure; This type of sealing pair is high to process equipment and accuracy of manufacturing requirement, and its sealing surface of seat and spheroid must grind after the fine finishing, and also need match grinding after grinding; Complex manufacturing; Manufacture cycle is long, so its manufacturing efficiency is low, and cost of production is constantly soaring.The sealing pair of the utility model adopts the conical surface seal structure, has promptly guaranteed excellent sealing performance, has improved technology capability again.And seal ring and valve ball are designed to detachable structure, bring very big facility for later maintenance and maintenance.In case revealing appears in the seal ring place, only need replacing seal ring or valve seat to get final product, common hard seal ball valve then must be changed whole valve ball, valve seat, so its maintenance cost is high.Therefore, no matter from the angle of product performance, manufacture cost, manufacturing efficiency and after sales service, the utility model all has clear superiority.
In sum: the utlity model has good seal performance, high temperature resistant, long lifetime, be prone to make, just advantages such as maintenance and beautiful shape, compact structure.
More than show and described the advantage of basic principle, major character and the utility model of the utility model.The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; The utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.
Claims (7)
1. bipyramid metallic seal valve comprises the valve body that has runner, is provided with valve ball in the valve flowing channel; Valve ball is connected with valve seat; Be provided with the sealing pair structure between valve ball and the valve seat, it is characterized in that, the radial disbalance e at valve ball rotating center and valve flowing channel center; The axial eccentric H of valve ball rotating center and sealing surface of seat, and the angle of sealing pair circular cone center line and runner center line.
2. bipyramid metallic seal valve according to claim 1 is characterized in that each eccentric span is e:1～200mm, H:1～1000mm, α: 1 °～180 °.
3. bipyramid metallic seal valve according to claim 1 and 2 is characterized in that, valve seat is for being fixed on the valve body through welding or expanded joint mode.
4. bipyramid metallic seal valve according to claim 1 and 2; It is characterized in that said sealing pair structure is made up of pad, seal ring, trim ring, retaining ring, pad is enclosed within on the valve ball; The pad outside is a seal ring; The seal ring outside is a trim ring, is connected on the valve ball through retaining ring at last, and retaining ring is connected on the valve ball through screw.
5. bipyramid metallic seal valve according to claim 4 is characterized in that said seal ring is PTFE, RPTFE, NYLON, PEEK, rubber material.
6. bipyramid metallic seal valve according to claim 4 is characterized in that, said seal ring is the multi-layer sealing ring that stainless steel folder Expanded graphite is processed.
7. bipyramid metallic seal valve according to claim 4 is characterized in that, seal ring is that all-metal material is processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205348592U CN202371204U (en) | 2011-12-19 | 2011-12-19 | Double-cone metal seal valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205348592U CN202371204U (en) | 2011-12-19 | 2011-12-19 | Double-cone metal seal valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202371204U true CN202371204U (en) | 2012-08-08 |
Family
ID=46594908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205348592U Expired - Fee Related CN202371204U (en) | 2011-12-19 | 2011-12-19 | Double-cone metal seal valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202371204U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295764A (en) * | 2014-09-26 | 2015-01-21 | 宣达实业集团有限公司 | Forced sealing ball valve |
| CN117967805A (en) * | 2024-04-01 | 2024-05-03 | 南通市力沛流体阀业有限公司 | Wear-resistant sealing butterfly valve |
-
2011
- 2011-12-19 CN CN2011205348592U patent/CN202371204U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295764A (en) * | 2014-09-26 | 2015-01-21 | 宣达实业集团有限公司 | Forced sealing ball valve |
| CN117967805A (en) * | 2024-04-01 | 2024-05-03 | 南通市力沛流体阀业有限公司 | Wear-resistant sealing butterfly valve |
| CN117967805B (en) * | 2024-04-01 | 2024-05-28 | 南通市力沛流体阀业有限公司 | Wear-resistant sealing butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20191219 |