CN104728466A - High-performance non-leakage ball valve for natural gas transmission - Google Patents
High-performance non-leakage ball valve for natural gas transmission Download PDFInfo
- Publication number
- CN104728466A CN104728466A CN201510049571.9A CN201510049571A CN104728466A CN 104728466 A CN104728466 A CN 104728466A CN 201510049571 A CN201510049571 A CN 201510049571A CN 104728466 A CN104728466 A CN 104728466A
- Authority
- CN
- China
- Prior art keywords
- valve
- seal ring
- natural gas
- gas transmission
- ball
- 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
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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
- 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
- F16K5/0689—Packings between housing and plug
Abstract
The invention relates to a high-performance non-leakage ball valve for natural gas transmission. The high-performance non-leakage ball valve for the natural gas transmission comprises a support and a valve body arranged on the support, wherein a valve rod is arranged on the top of the valve body, a ball is arranged inside the valve body, the two ends of the ball are connected with the valve body in a sealed mode through a valve base, a sealing ring is arranged between the valve base and the ball, the cross section of the sealing ring is triangular, three vertex angles of the triangular cross section of the sealing ring are fillets with the equal radius, an annular groove matched with the sealing ring is formed in the valve base, and the vertex angles of the triangular cross section of the sealing ring are in interference fit with the ball. The high-performance non-leakage ball valve for the natural gas transmission enables original surface contact sealing to become line contact sealing by adopting the sealing ring with the triangular cross section, not only can the intensity of pressure between the sealing ring and the ball and the sealing effect be improved, but also the phenomenon that due to the fact that impurities are mixed up between the sealing ring and the ball, the sealing effect is affected can be effectively avoided.
Description
Technical field
The present invention relates to a kind of high-performance leakage-free ball valve for natural gas transmission.
Background technique
Ball valve is a kind of novel valve be widely adopted in recent years, and compared with common gate valve, main difference is that the closure member of ball valve is a spheroid, and spheroid is done to rotate the object realizing valve opening or closedown around the center line of valve body.
Ball valve is mainly used to make the flow direction cutting off, distribute and change medium in pipeline, and the sealing of ball valve is also the major embodiment of valve performance, prior art be all adopt seal ring to contact with face form to realize the sealing between valve body and spheroid, because area of contact is large, so when pressure is certain, pressure between seal ring and spheroid will be little, and such Long-Time Service gets off, and is easy to leak; And, in transmitting procedure, be easy in ball valve to enter impurity, because seal ring and spherome surface are that face contacts, so once impurity enters between seal ring and spheroid, then impurity is difficult to automatically to run out of, stay for a long time between spheroid and seal ring and act on, not only can cause cut to spheroid, also easily make being tightly connected between seal ring and spheroid produce gap, and then leak.
Summary of the invention
The technical problem to be solved in the present invention is: in order to overcome the deficiencies in the prior art, provides a kind of high-performance leakage-free ball valve for natural gas transmission.
The technical solution adopted for the present invention to solve the technical problems is: a kind of high-performance leakage-free ball valve for natural gas transmission, comprise support and be arranged on the valve body on support, described body top is provided with valve rod, described valve inner is provided with spheroid, described spheroid two ends are connected with valve seal by valve seat, be provided with rubber seal ring between described valve seat and spheroid, the cross section of described seal ring is triangle;
Three drift angles of the triangular-section of described seal ring are the equal rounding of radius; Described valve seat is provided with the circular groove mated with seal ring, and the drift angle of the triangular-section of described seal ring mates with spheroid interference.
As preferably, the triangular-section of described seal ring is isosceles triangle.
As preferably, the hardness of described seal ring is 95 °-98 °, and the tensile strength of described seal ring is 15.5MPa.
One embodiment of the present invention are: described valve body is provided with baffle plate, and described valve seat is provided with the draw-in groove mated with baffle plate, and described valve seat is fixedly connected with valve body by baffle plate.
Another embodiment of the invention is: described valve body is provided with bolt hole, and described valve seat is fixedly connected with valve body by bolt.
In prior art, seal ring adopts PTFE to make, and compares and rubber material, and PTFE is comparatively hard, once there be impurity to be stuck between spheroid and seal ring, polytetrafluoroethylsealed sealed ring can slide at spherome surface together with impurity, is easy to scratch spherome surface.
The invention has the beneficial effects as follows, this high-performance leakage-free ball valve being used for natural gas transmission is by adopting cross section to be leg-of-mutton seal ring, original face contact sealing is made to become line contact sealing, the pressure between seal ring and spheroid can not only be increased, lift-off seal effect, and can effectively prevent from impurity to be mixed between seal ring and spheroid impacting sealing effect.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of the present invention for the embodiment 1 of the high-performance leakage-free ball valve of natural gas transmission;
Fig. 2 is the structural representation of the present invention for the valve seat of the embodiment 1 of the high-performance leakage-free ball valve of natural gas transmission;
Fig. 3 is the valve seat of the present invention for the embodiment 1 of the high-performance leakage-free ball valve of natural gas transmission and the linkage structure schematic diagram of valve body;
Fig. 4 is the structural representation of the present invention for the embodiment 2 of the high-performance leakage-free ball valve of natural gas transmission;
Fig. 5 is the structural representation of the present invention for the valve seat of the embodiment 2 of the high-performance leakage-free ball valve of natural gas transmission;
Fig. 6 is the valve seat of the present invention for the embodiment 2 of the high-performance leakage-free ball valve of natural gas transmission and the linkage structure schematic diagram of valve body;
Fig. 7 is the sectional view of the present invention for the seal ring of the high-performance leakage-free ball valve of natural gas transmission;
In figure: 1. support, 2. valve body, 3. valve rod, 4. spheroid, 5. valve seat, 6. seal ring, 7. circular groove, 8. baffle plate, 9. bolt.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
Embodiment 1
As Figure 1-3, a kind of high-performance leakage-free ball valve for natural gas transmission, the valve body 2 comprising support 1 and be arranged on support 1, described valve body 2 top is provided with valve rod 3, described valve body 2 inside is provided with spheroid 4, described spheroid 4 two ends are tightly connected by valve seat 5 and valve body 2, and be provided with seal ring 6 between described valve seat 5 and spheroid 4, the cross section of described seal ring 6 is triangle;
Three drift angles of the triangular-section of described seal ring 6 are the equal rounding of radius; Described valve seat 5 is provided with the circular groove 7 mated with seal ring 6, and the drift angle of the triangular-section of described seal ring 6 mates with spheroid 4 interference.
As preferably, the triangular-section of described seal ring 6 is isosceles triangle.
As preferably, the hardness of described seal ring 6 is 95 °-98 °, and the tensile strength of described seal ring 6 is 15.5MPa.
Described valve body 2 is provided with baffle plate 8, and described valve seat 5 is provided with the draw-in groove mated with baffle plate 8, and described valve seat 5 is fixedly connected with valve body 2 by baffle plate 8.
Embodiment 2
As Figure 4-Figure 6, the present embodiment is roughly the same with embodiment 1, and the main distinction is that described valve body 2 is provided with bolt hole, and described valve seat 5 is fixedly connected with valve body 2 by bolt 9.
Compared with prior art, this high-performance leakage-free ball valve being used for natural gas transmission is by adopting cross section to be leg-of-mutton seal ring 6, original face contact sealing is made to become line contact sealing, the pressure between seal ring 6 and spheroid 4 can not only be increased, lift-off seal effect, and can effectively prevent from impurity to be mixed between seal ring 6 and spheroid 4 impacting sealing effect.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on specification, must determine its technical scope according to right.
Claims (5)
1. the high-performance leakage-free ball valve for natural gas transmission, comprise support and be arranged on the valve body on support, described body top is provided with valve rod, described valve inner is provided with spheroid, described spheroid two ends are connected with valve seal by valve seat, it is characterized in that, be provided with rubber seal ring between described valve seat and spheroid, the cross section of described seal ring is triangle;
Three drift angles of the triangular-section of described seal ring are the equal rounding of radius; Described valve seat is provided with the circular groove mated with seal ring, and the drift angle of the triangular-section of described seal ring mates with spheroid interference.
2., as claimed in claim 1 for the high-performance leakage-free ball valve of natural gas transmission, it is characterized in that, the triangular-section of described seal ring is isosceles triangle.
3., as claimed in claim 1 for the high-performance leakage-free ball valve of natural gas transmission, it is characterized in that, the hardness of described seal ring is 95 °-98 °, and the tensile strength of described seal ring is 15.5MPa.
4., as claimed in claim 1 for the high-performance leakage-free ball valve of natural gas transmission, it is characterized in that, described valve body is provided with baffle plate, and described valve seat is provided with the draw-in groove mated with baffle plate, and described valve seat is fixedly connected with valve body by baffle plate.
5., as claimed in claim 1 for the high-performance leakage-free ball valve of natural gas transmission, it is characterized in that, described valve body is provided with bolt hole, and described valve seat is fixedly connected with valve body by bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510049571.9A CN104728466A (en) | 2015-02-01 | 2015-02-01 | High-performance non-leakage ball valve for natural gas transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510049571.9A CN104728466A (en) | 2015-02-01 | 2015-02-01 | High-performance non-leakage ball valve for natural gas transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104728466A true CN104728466A (en) | 2015-06-24 |
Family
ID=53452654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510049571.9A Pending CN104728466A (en) | 2015-02-01 | 2015-02-01 | High-performance non-leakage ball valve for natural gas transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104728466A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505095A (en) * | 2017-09-18 | 2017-12-22 | 江苏诚功阀门科技有限公司 | The experiments of sealing performance method of ball valve |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2527730A1 (en) * | 1982-05-26 | 1983-12-02 | Bellavoine Claude | Ball valve with radial PTFE seal in mobile support - to allow adjustment of the seal interface compression and exclude aggressive materials |
| WO2005038317A1 (en) * | 2003-10-06 | 2005-04-28 | Dresser, Inc. | Low torque ball valve seat |
| CN201507685U (en) * | 2009-09-25 | 2010-06-16 | 四川精控阀门制造有限公司 | Rubber tri-angle ring flexible sealing valve fixed ball valve |
| CN201539598U (en) * | 2009-09-23 | 2010-08-04 | 昆山维萨阀门有限公司 | Bidirectional rubber seal valve seat for fixed ball valve |
| CN202149241U (en) * | 2011-07-20 | 2012-02-22 | 四川凯茨阀门制造有限公司 | Novel ball valve for gathering petroleum and natural gas |
| CN102748519A (en) * | 2012-07-09 | 2012-10-24 | 兰州高压阀门有限公司 | Novel high-pressure large-diameter fully-welded ball valve |
| CN102818044A (en) * | 2012-08-31 | 2012-12-12 | 五洲阀门有限公司 | Ball valve |
| CN202733040U (en) * | 2012-04-19 | 2013-02-13 | 吴江恒宇精密模具有限公司 | Three-sealing ball valve seat |
| CN202746649U (en) * | 2012-08-31 | 2013-02-20 | 五洲阀门有限公司 | Ball valve |
| CN103486289A (en) * | 2013-10-12 | 2014-01-01 | 南京肯特复合材料有限公司 | Ball valve seat |
| CN203560490U (en) * | 2013-11-18 | 2014-04-23 | 山西浩宇阀门科技有限公司 | Ball valve for gas pipeline |
| CN104235414A (en) * | 2014-08-26 | 2014-12-24 | 格鲁赛特阀门配件江苏有限公司 | Novel sealing ball valve |
-
2015
- 2015-02-01 CN CN201510049571.9A patent/CN104728466A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2527730A1 (en) * | 1982-05-26 | 1983-12-02 | Bellavoine Claude | Ball valve with radial PTFE seal in mobile support - to allow adjustment of the seal interface compression and exclude aggressive materials |
| WO2005038317A1 (en) * | 2003-10-06 | 2005-04-28 | Dresser, Inc. | Low torque ball valve seat |
| CN201539598U (en) * | 2009-09-23 | 2010-08-04 | 昆山维萨阀门有限公司 | Bidirectional rubber seal valve seat for fixed ball valve |
| CN201507685U (en) * | 2009-09-25 | 2010-06-16 | 四川精控阀门制造有限公司 | Rubber tri-angle ring flexible sealing valve fixed ball valve |
| CN202149241U (en) * | 2011-07-20 | 2012-02-22 | 四川凯茨阀门制造有限公司 | Novel ball valve for gathering petroleum and natural gas |
| CN202733040U (en) * | 2012-04-19 | 2013-02-13 | 吴江恒宇精密模具有限公司 | Three-sealing ball valve seat |
| CN102748519A (en) * | 2012-07-09 | 2012-10-24 | 兰州高压阀门有限公司 | Novel high-pressure large-diameter fully-welded ball valve |
| CN102818044A (en) * | 2012-08-31 | 2012-12-12 | 五洲阀门有限公司 | Ball valve |
| CN202746649U (en) * | 2012-08-31 | 2013-02-20 | 五洲阀门有限公司 | Ball valve |
| CN103486289A (en) * | 2013-10-12 | 2014-01-01 | 南京肯特复合材料有限公司 | Ball valve seat |
| CN203560490U (en) * | 2013-11-18 | 2014-04-23 | 山西浩宇阀门科技有限公司 | Ball valve for gas pipeline |
| CN104235414A (en) * | 2014-08-26 | 2014-12-24 | 格鲁赛特阀门配件江苏有限公司 | Novel sealing ball valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505095A (en) * | 2017-09-18 | 2017-12-22 | 江苏诚功阀门科技有限公司 | The experiments of sealing performance method of ball valve |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150624 |