CN2597788Y - Three-way ball valve - Google Patents
Three-way ball valve Download PDFInfo
- Publication number
- CN2597788Y CN2597788Y CNU032196172U CN03219617U CN2597788Y CN 2597788 Y CN2597788 Y CN 2597788Y CN U032196172 U CNU032196172 U CN U032196172U CN 03219617 U CN03219617 U CN 03219617U CN 2597788 Y CN2597788 Y CN 2597788Y
- Authority
- CN
- China
- Prior art keywords
- valve
- pressure side
- high pressure
- ammonia
- valve base
- 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.)
- Expired - Fee Related
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- Taps Or Cocks (AREA)
- Float Valves (AREA)
Abstract
The utility model relates to a three way ball valve, comprising a valve body, a valve base, a valve pole, a ball body and a transmission handle. One end of the valve pole is fixed connected with the ball body and the other end is connected with the transmission handle. The valve body is a three way structure, mainly characterized in that the valve base is a floating combined valve base which can automatically compensate the wearing of the sealing ring; furthermore, when the low pressure side ammonia flows, and the high pressure side ammonia pushes the ball body to the low pressure side valve base, the high pressure side valve base tightly leans to the high pressure side valve ball body under the effect of spring and medium pressure and completely cuts off the high pressure side ammonia. The utility model has the advantages of reliable sealing performance and long serve life, much applicable for the high and low pressure transfer valve of coke oven ammonia circulating system.
Description
Technical field
The utility model relates to a kind of valve, specifically about a kind of tee ball valve.The utility model is applicable to the high low pressure conversion valve of coke oven high pressure aqua ammonia jet circulating system.
Background technique
The structure of the high low pressure conversion valve of the coke oven high pressure aqua ammonia jet circulating system of present domestic coking industry generally is to adopt L type tee ball valve, the main sealability of this structure valve, be right two the polytetrafluoroethylene seal rings that keep left, under the effect of assembly pretightening power, be close to that the spheroid of a band L type passage realizes.When just bringing into use, valve can keep the sealing of a period of time because of the effect of assembly pretightening power.In use, because of the polytetrafluoroethylene seal ring is out of shape by the cold flow under the warm pressurized, and be subjected to sticking to the impurity on the spheroid and the continuous scraping and the friction of tar, make very quick-wearing of polytetrafluoroethylene seal ring, the gap appears between polytetrafluoroethylene seal ring and the spheroid, the original assembly pretightening power of valve fades away, and makes valve occur leaking.In the coke oven ammoniacal liquor circulatory system, the pressure reduction of valve both sides entrance system is very big, when the low pressure medium circulates, high-pressure medium will be with the seal of ball low voltage side, thereby form the gap between high pressure side seal and the spheroid, high pressure aqua ammonia will let out from this gap, has influenced the proper functioning of the coke oven ammoniacal liquor circulatory system.So poor sealing performance, life of product weak point are the subject matter of existing coke oven ammoniacal liquor circulatory system tee ball valve.
The model utility content
The purpose of this utility model is the problem that exists at prior art, provide a kind of in the high low pressure conversion work of the coke oven ammoniacal liquor circulatory system tee ball valve of reliable, the long service life of sealability.
The technological scheme that realizes the utility model purpose comprises valve body, valve seat, valve rod, spheroid and transmission handle, and valve rod one end is fixedlyed connected with spheroid, and the other end is connected with the transmission handle, and valve body is a three-port structure, and its main feature is that valve seat is the stack valve seat of floating.
In the above scheme, the soft seal circle is embedded on the metal seat valve.
In the such scheme, valve rod adopts down-mounting type back seal structure.
One of advantage of the present utility model is that valve seat is the stack valve seat of floating, the both sides valve seat is adjacent to spheroid all the time under spring and pressure medium effect, wearing and tearing that can the automatic compensation sealing circle, and when low voltage side ammoniacal liquor circulated, high pressure side ammoniacal liquor was with ball low voltage side valve seat the time, on high-tension side valve seat tightly relies on the high pressure side spheroid under the effect of spring and pressure medium, complete cutoff high side ammoniacal liquor, its sealability is reliable, and life of product is long.
Second advantage of the present utility model is that the soft seal circle is embedded on the metal seat valve, can prevent that seal from the cold flow distortion of High Temperature High Pressure and washing away of medium, improving sealability and life-span.
Second advantage of the present utility model is that valve rod adopts down-mounting type back seal structure, can prevent because of valve cavity boosts unusually, and cause valve rod to be deviate from, and improves the sealing reliability at valve rod position.
Description of drawings
Fig. 1 is a structure sectional view of the present utility model.
Fig. 2 is a circulation status schematic representation of the present utility model.
Embodiment
Tee ball valve as shown in Figure 1, comprise valve body 6, valve seat 4, valve rod 7, spheroid 1 and transmission handle, valve rod 7 one ends are fixedlyed connected with spheroid 1, the other end is connected with the transmission handle, spheroid 1 is a three-port structure, valve seat 4 is the stack valve seat of floating, and valve body 6 is the 3 stops three-port structure, and valve rod 7 is a back seal down-mounting type structure.The so-called stack valve seat of floating, be exactly that butterfly spring 5 is installed between valve seat 4 and valve body 6, make valve seat 4 can follow spheroid 1 to float, polytetrafluoroethylene seal ring 2 is embedded on the metal seat valve 4, reduce seal in the cold flow distortion of High Temperature High Pressure and washing away of medium, between metal seat valve 4 and valve body 6, adopt 3 sealings of O shape circle.So-called 3 stops three-port structure valve body is exactly that valve body 6 is made up of middle body and left and right sides body, the stack valve seat of floating is installed respectively in the body of the left and right sides, and links to each other with the high low pressure two ends of the coke oven ammoniacal liquor circulatory system respectively, and middle body connects discharge tube, constitutes three-port structure.The valve rod of so-called back seal down-mounting type structure is exactly that valve rod 7 is installed from lower to upper, between valve body 6 inboards and valve rod 7 seal ring is set.
Claims (3)
1, a kind of tee ball valve, comprise valve body (6), valve seat (4), valve rod (7), spheroid (1) and transmission handle, valve rod (7) one ends are fixedlyed connected with spheroid (1), and the other end is connected with the transmission handle, valve body (6) is a three-port structure, it is characterized in that valve seat (4) is the stack valve seat of floating.
2, tee ball valve according to claim 1 is characterized in that soft seal circle (2) is embedded on the metal seat valve (4).
3, tee ball valve according to claim 1 and 2 is characterized in that valve rod (7) adopts down-mounting type back seal structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032196172U CN2597788Y (en) | 2003-01-24 | 2003-01-24 | Three-way ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032196172U CN2597788Y (en) | 2003-01-24 | 2003-01-24 | Three-way ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2597788Y true CN2597788Y (en) | 2004-01-07 |
Family
ID=34161345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032196172U Expired - Fee Related CN2597788Y (en) | 2003-01-24 | 2003-01-24 | Three-way ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2597788Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7635113B2 (en) | 2004-07-15 | 2009-12-22 | Swagelok Company | Ball valve seat arrangement |
| CN101893116A (en) * | 2010-06-23 | 2010-11-24 | 兰州理工大学温州泵阀工程研究院 | Self-sealing device of three-way ball valve |
| CN114060563A (en) * | 2021-12-21 | 2022-02-18 | 江苏华英阀业有限公司 | Valve seat structure of ultra-low temperature nonmetal sealing floating ball valve |
-
2003
- 2003-01-24 CN CNU032196172U patent/CN2597788Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7635113B2 (en) | 2004-07-15 | 2009-12-22 | Swagelok Company | Ball valve seat arrangement |
| CN101893116A (en) * | 2010-06-23 | 2010-11-24 | 兰州理工大学温州泵阀工程研究院 | Self-sealing device of three-way ball valve |
| CN101893116B (en) * | 2010-06-23 | 2012-11-14 | 兰州理工大学温州泵阀工程研究院 | Self-sealing device of three-way ball valve |
| CN114060563A (en) * | 2021-12-21 | 2022-02-18 | 江苏华英阀业有限公司 | Valve seat structure of ultra-low temperature nonmetal sealing floating ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |