CN102927308A - High-temperature and high-pressure rigid sealing ball valve - Google Patents
High-temperature and high-pressure rigid sealing ball valve Download PDFInfo
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- CN102927308A CN102927308A CN201110278458XA CN201110278458A CN102927308A CN 102927308 A CN102927308 A CN 102927308A CN 201110278458X A CN201110278458X A CN 201110278458XA CN 201110278458 A CN201110278458 A CN 201110278458A CN 102927308 A CN102927308 A CN 102927308A
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Abstract
The invention belongs to the field of ball valves, and in particular relates to a high-temperature and high-pressure rigid sealing ball valve. The high-temperature and high-pressure rigid sealing ball valve comprises a ball body arranged in a valve body, wherein valve covers are arranged on two sides of the valve body; liquid inlet channels and liquid outlet channels are formed on the two valve covers respectively; a valve stem is arranged at the upper end of the ball body and penetrates through a radiating tube which is fixedly arranged on the upper side of the valve body upwards; a driving mechanism which drives the valve stem to move up and down is arranged on the upper side of the radiating tube; and an elastic rigid sealing device is arranged between the valve covers and the ball body. According to the high-temperature and high-pressure rigid sealing ball valve, the elastic rigid sealing device provides an excellent dynamic compensation effect of temperature difference for the valve, so that the ball valve can keep excellent sealing performance regardless of temperature rise or temperature reduction. Simultaneously, the ball valve also has the advantages of long service life and zero leakage, can be tolerant to ultrahigh temperature and ultralow temperature and is widely suitable for environment in which using conditions are harsh such as ultrahigh-temperature, ultralow-temperature, inflammable, explosive and toxic working conditions.
Description
Technical field
The invention belongs to the ball valve field, be specifically related to a kind of High Temperature High Pressure hard seal ball valve.
Background technique
Ball valve has the action of 90-degree rotation, and the faucet body of ball valve is spheroid, manhole or passage is arranged by its axis on the spheroid.Ball valve is mainly used to cut off, distribute and change the flow direction of medium in pipeline.Although ball valve have the double fluid to, resistance is little and open and close rapidly advantage, yet the common non-refractory of ball valve, the shortcomings such as sealability variation occur in ball valve easily under high temperature and high pressure condition, have shortened the working life of ball valve, thereby have greatly limited the application of ball valve.
Summary of the invention
The purpose of this invention is to provide a kind of High Temperature High Pressure hard seal ball valve, this ball valve can be worked under high temperature and high pressure environment reliable and stablely, and good seal performance.
For achieving the above object, the present invention has adopted following technological scheme: a kind of High Temperature High Pressure hard seal ball valve, comprise the spheroid that is arranged in the valve body, the both sides of valve body are provided with valve gap, be respectively equipped with feed pathway and liquid outlet channel on two valve gaps, the upper end of described spheroid is provided with valve rod, and described valve rod upwards is arranged in the heat dissipating pipe that is fixedly installed on the valve body upside, the upside of heat dissipating pipe is provided with the driving mechanism that actuate valve stem moves up and down, and is provided with the elastic hard sealing device between described valve gap and the spheroid.
Simultaneously the present invention can also be able to further realization by following measures:
Described elastic hard sealing device comprises the circular valve seat that is arranged in the valve gap, consist of hard sealing pair between valve seat and the described spheroid, the outer ring surface of valve seat and the inner side surface of valve gap formation are slidingly matched, end away from spheroid of valve seat is provided with and varies with temperature and flexible bellows, bellows is welded as a whole away from an end and the described valve gap of spheroid, and the feed pathway on the medial axis of described valve seat and bellows and the valve gap and the axis of liquid outlet channel overlap mutually, and the internal diameter of valve seat and bellows equals the internal diameter of feed pathway or liquid outlet channel at least.
The external diameter of described valve seat is greater than the external diameter of bellows, described elastic hard sealing device also comprises and is arranged on valve seat away from the seating spring of the end of spheroid, seating spring is arranged on all sides of bellows, and seating spring is resisted against the protrusion of valve seat on the end face of bellows radial outside, and the elastic force direction of seating spring parallels with the medial axis of bellows.
Described seating spring is a plurality of along circumferentially being provided with uniformly of bellows.
Described valve gap is provided with the spring seat of groove shape towards an end of valve seat, and described seating spring is embedded in spring seat, described spring seat axially and axially the paralleling of valve seat.
The inboard of described valve seat and bellows is arranged with the spacer of tubular, one end of spacer and valve seat welding, the other end of spacer extends to form free end to bellows one side, the stair-stepping inner side surface of the free end of spacer and valve gap sticks together and consists of and is slidingly matched, and the length of spacer is less than the length sum of valve seat and bellows, and the internal diameter of spacer equals the internal diameter of feed pathway or liquid outlet channel at least.
Beneficial effect of the present invention is: the elastic hard sealing device among the present invention provides excellent temperature difference dynamic compensation effect for valve, thereby no matter has guaranteed that ball valve can both keep good sealability when temperature raises or reduce.Simultaneously the ball valve among the present invention also has the advantage of long service life and zero leakage, and can tolerate superhigh temperature and ultralow temperature, thereby is widely used in the comparatively harsh environment of service condition such as superhigh temperature, ultralow temperature, inflammable, explosive and poisonous operating mode.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of elastic hard sealing device.
The implication of mark is as follows among the figure:
1-valve body 2-valve gap 6-spheroid 7-valve seat 8-spacer
9-seating spring 17-heat dissipating pipe 71-bellows
Embodiment
As shown in Figure 1, a kind of High Temperature High Pressure hard seal ball valve, comprise the spheroid 6 that is arranged in the valve body 1, the both sides of valve body 1 are provided with valve gap 2, be respectively equipped with feed pathway and liquid outlet channel on two valve gaps 2, the upper end of described spheroid 6 is provided with valve rod 10, and described valve rod 10 upwards is arranged in the heat dissipating pipe 17 that is fixedly installed on valve body 1 upside, the upside of heat dissipating pipe 17 is provided with the driving mechanism that actuate valve stem 10 moves up and down, and is provided with the elastic hard sealing device between described valve gap 2 and the spheroid 6.
Further, as shown in Figure 2, described elastic hard sealing device comprises the circular valve seat 7 that is arranged in the valve gap 2, consist of hard sealing pair between valve seat 7 and the described spheroid 6, the inner side surface formation of the outer ring surface of valve seat 7 and valve gap 2 is slidingly matched, end away from spheroid 6 of valve seat 7 is provided with and varies with temperature and flexible bellows 71, bellows 71 is welded as a whole away from an end and the described valve gap 2 of spheroid 6, and the feed pathway on the medial axis of described valve seat 7 and bellows 71 and the valve gap 2 and the axis of liquid outlet channel overlap mutually, the internal diameter of valve seat 7 and bellows 71 equals the internal diameter of feed pathway or liquid outlet channel at least, to guarantee passing through smoothly of medium.
As preferred version of the present invention, the external diameter of described valve seat 7 is greater than the external diameter of bellows 71, described elastic hard sealing device also comprises and is arranged on valve seat 7 away from the seating spring 9 of the end of spheroid 6, seating spring 9 is arranged on all sides of bellows 71, and seating spring 9 is resisted against the protrusion of valve seat 7 on the end face of bellows 71 radial outsides, and the elastic force direction of seating spring 9 parallels with the medial axis of bellows 71.
Described seating spring 9 is a plurality of along circumferentially being provided with uniformly of bellows 71.
As shown in Figure 2, described valve gap 2 is provided with the spring seat of groove shape towards an end of valve seat 7, described seating spring 9 is embedded in spring seat, described spring seat axially and axially the paralleling of valve seat, this set can guarantee that seating spring 9 is resisted against on the end face of valve seat 7 exactly.
Further, as shown in Figure 2, the inboard of described valve seat 7 and bellows 71 is arranged with the spacer 8 of tubular, one end of spacer 8 and valve seat 7 welding, the other end of spacer 8 extends to form free end to bellows 71 1 sides, the stair-stepping inner side surface of the free end of spacer 8 and valve gap 2 sticks together and consists of and is slidingly matched, and the length of spacer 8 is less than the length sum of valve seat 7 and bellows 71, and the internal diameter of spacer 8 equals the internal diameter of feed pathway or liquid outlet channel at least.
In real work, because an end of spacer 8 and the inner side surface of valve gap 2 stick together and consist of and be slidingly matched, the other end then is welded and fixed with valve seat 7, therefore when the gradient of temperature of medium and so that bellows 71 when stretching, 8 pairs of valve seats 7 of spacer play the effect of guide and limit, have guaranteed the work that valve seat 7 can safety and stability.
In sum, the inner side surface of the valve gap 2 among the present invention is provided with a plurality of stepped boss, the end face that described valve seat 7, spacer 8 and bellows 71 and valve gap 2 join is corresponding different stepped boss all, so that valve seat 7, spacer 8 and bellows 71 play consistently effect separately.The key that realizes hard sealing among the present invention is cooperatively interacting of valve seat 7, spacer 8, seating spring 9 and bellows 71, wherein the valve seat 7 with bellows 71 is the main bodys that consist of hard sealing pair with spheroid 6,9 effects of playing compensation of seating spring, and spacer 8 mainly plays the effect of guide and limit to valve seat 7.
Claims (6)
1. High Temperature High Pressure hard seal ball valve, comprise the spheroid (6) that is arranged in the valve body (1), the both sides of valve body (1) are provided with valve gap (2), two valve gaps are respectively equipped with feed pathway and liquid outlet channel on (2), the upper end of described spheroid (6) is provided with valve rod (10), it is characterized in that: described valve rod (10) upwards is arranged in the heat dissipating pipe (17) that is fixedly installed on valve body (1) upside, the upside of heat dissipating pipe (17) is provided with the driving mechanism that actuate valve stem (10) moves up and down, and is provided with the elastic hard sealing device between described valve gap (2) and the spheroid (6).
2. High Temperature High Pressure hard seal ball valve according to claim 1, it is characterized in that: described elastic hard sealing device comprises the circular valve seat (7) that is arranged in the valve gap (2), consist of hard sealing pair between valve seat (7) and the described spheroid (6), the inner side surface formation of the outer ring surface of valve seat (7) and valve gap (2) is slidingly matched, end away from spheroid (6) of valve seat (7) is provided with and varies with temperature and flexible bellows (71), bellows (71) is welded as a whole away from an end and the described valve gap (2) of spheroid (6), and the feed pathway on the medial axis of described valve seat (7) and bellows (71) and the valve gap (2) and the axis of liquid outlet channel overlap mutually, and the internal diameter of valve seat (7) and bellows (71) equals the internal diameter of feed pathway or liquid outlet channel at least.
3. High Temperature High Pressure hard seal ball valve according to claim 2, it is characterized in that: the external diameter of described valve seat (7) is greater than the external diameter of bellows (71), described elastic hard sealing device also comprises and is arranged on valve seat (7) away from the seating spring (9) of the end of spheroid (6), seating spring (9) is arranged on all sides of bellows (71), and seating spring (9) is resisted against the protrusion of valve seat (7) on the end face of bellows (71) radial outside, and the elastic force direction of seating spring (9) parallels with the medial axis of bellows (71).
4. High Temperature High Pressure hard seal ball valve according to claim 3, it is characterized in that: described seating spring (9) is a plurality of along circumferentially being provided with uniformly of bellows (71).
5. High Temperature High Pressure hard seal ball valve according to claim 3, it is characterized in that: described valve gap (2) is provided with the spring seat of groove shape towards an end of valve seat (7), described seating spring (9) is embedded in spring seat, described spring seat axially and axially the paralleling of valve seat (7).
6. each described High Temperature High Pressure hard seal ball valve according to claim 2～5, it is characterized in that: the inboard of described valve seat (7) and bellows (71) is arranged with the spacer (8) of tubular, one end of spacer (8) and valve seat (7) welding, the other end of spacer (8) extends to form free end to bellows (71) one sides, the stair-stepping inner side surface of the free end of spacer (8) and valve gap (2) sticks together and consists of and is slidingly matched, and the length of spacer (8) is less than the length sum of valve seat (7) and bellows (71), and the internal diameter of spacer (8) equals the internal diameter of feed pathway or liquid outlet channel at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110278458XA CN102927308A (en) | 2011-08-13 | 2011-08-13 | High-temperature and high-pressure rigid sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110278458XA CN102927308A (en) | 2011-08-13 | 2011-08-13 | High-temperature and high-pressure rigid sealing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102927308A true CN102927308A (en) | 2013-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110278458XA Pending CN102927308A (en) | 2011-08-13 | 2011-08-13 | High-temperature and high-pressure rigid sealing ball valve |
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| CN (1) | CN102927308A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202218A (en) * | 2015-10-27 | 2015-12-30 | 上正阀门集团有限公司 | Top assembly type corrugated fixed ball valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415879A (en) * | 2002-09-19 | 2003-05-07 | 浙江成达特种阀门厂 | Metal seal ball valve for corrugated tube |
| CN2913762Y (en) * | 2006-06-07 | 2007-06-20 | 大连大高阀门有限公司 | Corrugated pipe ball valve |
| CN201159300Y (en) * | 2008-02-15 | 2008-12-03 | 温州市瓯斯特阀门有限公司 | High temperature oil gas isolation valve |
| CN101561053A (en) * | 2008-04-18 | 2009-10-21 | 中国石油化工集团公司 | High-temperature abrasive resistant ball valve with fixed ball and floating valve seat |
| CN201588967U (en) * | 2009-12-25 | 2010-09-22 | 昆山维萨阀门有限公司 | Bellows ball valve |
| CN202469051U (en) * | 2011-08-13 | 2012-10-03 | 余金贤 | High temperature high pressure hard seal ball valve |
-
2011
- 2011-08-13 CN CN201110278458XA patent/CN102927308A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415879A (en) * | 2002-09-19 | 2003-05-07 | 浙江成达特种阀门厂 | Metal seal ball valve for corrugated tube |
| CN2913762Y (en) * | 2006-06-07 | 2007-06-20 | 大连大高阀门有限公司 | Corrugated pipe ball valve |
| CN201159300Y (en) * | 2008-02-15 | 2008-12-03 | 温州市瓯斯特阀门有限公司 | High temperature oil gas isolation valve |
| CN101561053A (en) * | 2008-04-18 | 2009-10-21 | 中国石油化工集团公司 | High-temperature abrasive resistant ball valve with fixed ball and floating valve seat |
| CN201588967U (en) * | 2009-12-25 | 2010-09-22 | 昆山维萨阀门有限公司 | Bellows ball valve |
| CN202469051U (en) * | 2011-08-13 | 2012-10-03 | 余金贤 | High temperature high pressure hard seal ball valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202218A (en) * | 2015-10-27 | 2015-12-30 | 上正阀门集团有限公司 | Top assembly type corrugated fixed ball valve |
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Application publication date: 20130213 |