CN203395243U - Ultrahigh low-temperature rigid seal ball valve - Google Patents
Ultrahigh low-temperature rigid seal ball valve Download PDFInfo
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- CN203395243U CN203395243U CN201320493041.XU CN201320493041U CN203395243U CN 203395243 U CN203395243 U CN 203395243U CN 201320493041 U CN201320493041 U CN 201320493041U CN 203395243 U CN203395243 U CN 203395243U
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- valve
- valve body
- valve seat
- bellows
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Abstract
The utility model discloses an ultrahigh low-temperature rigid seal ball valve, comprising a valve body and a ball body which is arranged inside the valve body, wherein an elastic rigid seal device is arranged between the valve body and the ball body; a plurality of steam blowing mechanisms for injecting steam into the valve body and blowing are also connected to the valve body in a locating manner. The ultrahigh low-temperature rigid seal ball valve not only can play an effective sealing role in a high-temperature state, but also does not block the ball body due to thermal expansion by providing the elastic rigid seal device between the valve body of the ball valve and the ball body; a stable work state of the ball valve is ensured. In addition, the plurality of steam blowing mechanisms for injecting steam into the valve body and blowing are also connected to the valve body in the locating manner. Therefore, on one hand, residual oil and an oil gas can be effectively prevented from entering inside ripples of a corrugated pipe; the phenomenon that the corrugated pipe loses elasticity caused by coking at the inner and outer sides of the corrugated pipe is avoided; on the other hand, the unstability of the corrugated pipe also can be effectively prevented; leakage caused by uneven pressing force on an upstream valve seat is avoided.
Description
Technical field
The utility model relates to ball valve technical field, and a kind of superelevation low temperature hard seal ball valve is specifically provided.
Background technique
At present, at the bottom of Coking Tower for Delayed Coking Unit, on residual oil pipeline and overhead oil steam pipe line, be all to adopt high-temperature ball valve at home mostly, but the machining accuracy of this high-temperature ball valve is very high, it not only will guarantee the seal pressure of sealing pair, also to guarantee that the whole moment of torsion of valve is in a rational scope simultaneously, and the Percent of contact area between spheroid and valve seat also requires highlyer, so just can reach design effect.But when actual production: owing to being subject to the restriction of machining accuracy and the impact that through-flow medium washes away, the actual service condition of actual conditions and valve is not often very desirable, particularly at seal aspect, has greatly limited the application of ball valve.
Summary of the invention
In order to overcome above-mentioned defect, the utility model provides a kind of superelevation low temperature hard seal ball valve, and this ball valve is, stable working state good in superelevation low temperature environment seal performance not only, and long service life.
The utility model for the technological scheme that solves its technical problem and adopt is: a kind of superelevation low temperature hard seal ball valve, comprise valve body and be arranged at the spheroid in valve body, between described valve body and spheroid, be provided with elastic hard sealing device, also on described valve body, be located by connecting a plurality of in order to the steam blowing mechanism to valve inner steam injection purging.
As further improvement of the utility model, described valve body comprises valve body body and valve gap, and described valve gap is fixedly connected on a side of described valve body body, and and described valve body body between form a cavity, described spheroid activity is built in described cavity; Separately on described valve body body and valve gap, be also formed with respectively feed pathway and liquid outlet channel, and described feed pathway and liquid outlet channel coaxially arranged.
As further improvement of the utility model, described elastic hard sealing device comprises having and varies with temperature and the bellows of elastic telescopic, and be separately positioned on valve body body and valve gap Zhong upstream valve seat and downstream valve seat, wherein, described upstream valve seat and downstream valve seat are circular, described upstream valve seat and downstream valve seat lay respectively at the both sides of described spheroid, and respectively and between described spheroid, form hard sealing pair, and described downstream valve seat is also fixed relatively described valve gap position, the outer ring surface of described upstream valve seat also and between the madial wall of described valve body body forms and is slidably matched,
The inner ring surface of the madial wall of another described valve body body and described upstream valve seat is ladder-type, described bellows is movably placed between the madial wall and upstream valve seat of described valve body body, and a side elasticity of described bellows is resisted against on a step surface of described valve body body madial wall, and the opposite side elasticity of described bellows is resisted against on a step surface of described upstream valve seat inner ring surface.
As further improvement of the utility model, the medial axis of described bellows, upstream valve seat and downstream valve seat all overlaps mutually with the medial axis of described feed pathway and liquid outlet channel.
As further improvement of the utility model, described elastic hard sealing device also includes the guide shell of a tubulose, one end of described guide shell wore inner chamber movable being inserted in the interior ring of described upstream valve seat of described bellows, and it is outer and stick together to form with the madial wall of described valve body body and be slidably matched that the other end of described guide shell stretches out described bellows.
As further improvement of the utility model, this steam blowing mechanism is three, each steam blowing mechanism respectively includes a steam tube, one of them steam tube wore described valve body body and was conducted with the inner chamber of described bellows, another steam tube wore described valve body body and was conducted with described bellows exocoel, and remaining next steam tube wore described valve body body and was conducted with the cavity of described valve body.
As further improvement of the utility model, also be provided with a valve rod, described valve rod is positioned at the top of described valve body, and one end of described valve rod wore described valve body body and be connected with described spheroid, and the other end of described valve rod is located by connecting in the driving mechanism that can drive it to move up and down.
The beneficial effects of the utility model are: by being provided with elastic hard sealing device between the valve body at this ball valve and spheroid, not only can under the condition of high temperature, play sealing effect effectively, and be unlikely to again because of thermal expansion, to make spheroid jam, guarantee ball valve stable working state; Also on valve body, be located by connecting in addition a plurality of in order to valve inner steam injection the steam blowing mechanism that purges, can effectively prevent that residual oil and oil gas from entering in the ripple of bellows on the one hand, avoid outside coking in bellows, cause bellows to follow the string, also can effectively prevent bellows unstability on the other hand, avoid causing leakage uneven to the impacting force of upstream valve seat and that cause.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the assembly structure schematic diagram of valve body described in the utility model, spheroid and elastic hard sealing device;
Fig. 3 is the plan view of superelevation low temperature hard seal ball valve in the utility model.
By reference to the accompanying drawings, make the following instructions:
1---valve body body 2---valve gap
3---spheroid 4---bellows
5---upstream valve seat 6---downstream valve seat
7---guide shell 8---steam tube
9---valve rod
Embodiment
Below with reference to figure, preferred embodiment of the present utility model is elaborated.
A kind of superelevation low temperature hard seal ball valve described in the utility model, comprise valve body and be arranged at the spheroid 3 in valve body, between described valve body and spheroid, be provided with elastic hard sealing device, also on described valve body, be located by connecting a plurality of in order to the steam blowing mechanism to valve inner steam injection purging.Because the operating temperature of valve is very high, 500 ℃ of left and right, so its seal form can only adopt metal hard-sealing, and employing elastic hard sealing device, not only can under the condition of high temperature, play sealing effect effectively, but also be unlikely to because of thermal expansion, to make spheroid jam, guarantee ball valve stable working state; And installation steam blowing mechanism, can effectively prevent that residual oil and oil gas from entering in the ripple of bellows on the one hand, avoid outside coking in bellows, bellows is followed the string, also can prevent bellows unstability on the other hand, and then avoid causing leakage uneven to the impacting force of upstream valve seat and that cause.
In the utility model, described valve body comprises valve body body 1 and valve gap 2, and described valve gap 2 is fixedly connected on a side of described valve body body 1, and and described valve body body 1 between form a cavity, described spheroid 3 activities are built in described cavity; Separately on described valve body body 1 and valve gap 2, be also formed with respectively feed pathway and liquid outlet channel, and described feed pathway and liquid outlet channel coaxially arranged.
In the utility model, described elastic hard sealing device comprises having and varies with temperature and the bellows 4 of elastic telescopic, and be separately positioned on valve body body 1 and valve gap 2 Zhong upstream valve seat 5 and downstream valve seats 6, wherein, described upstream valve seat 5 and downstream valve seat 6 are circular, described upstream valve seat and downstream valve seat lay respectively at the both sides of described spheroid 3, and respectively and between described spheroid, form hard sealing pair, and described downstream valve seat 6 also relatively described valve gap 2 positions is fixed (that is: described downstream valve seat is quiet valve seat), the outer ring surface of described upstream valve seat forms be slidably matched (that is: described upstream valve seat is moving valve seat) also and between the madial wall of described valve body body 1,
The inner ring surface of the madial wall of another described valve body body 1 and described upstream valve seat is ladder-type, described bellows 4 is movably placed between the madial wall and upstream valve seat 5 of described valve body body 1, and a side elasticity of described bellows 4 is resisted against on a step surface of described valve body body 1 madial wall, and the opposite side elasticity of described bellows 4 is resisted against on a step surface of described upstream valve seat 5 inner ring surfaces.By utilize bellows as elastic element for upstream valve seat provides impacting force, upstream valve seat can be pressed in to spheroid Shang Bingyu downstream valve seat and coordinate the location of realizing spheroid, can play again compensating sealing surface wear and thermal compensation effect.
Preferably, the medial axis of described bellows, upstream valve seat and downstream valve seat all overlaps mutually with the medial axis of described feed pathway and liquid outlet channel.
In the utility model, described elastic hard sealing device also includes the guide shell 7 of a tubulose, one end of described guide shell 7 wore inner chamber movable being inserted in the interior ring of described upstream valve seat 5 of described bellows 4, and it is outer and stick together to form with the madial wall of described valve body body 1 and be slidably matched that the other end of described guide shell stretches out described bellows 4.
In the utility model, this steam blowing mechanism is three, each steam blowing mechanism respectively includes a steam tube 8, one of them steam tube wore described valve body body 1 and was conducted with the inner chamber of described bellows, another steam tube wore described valve body body 1 and was conducted with described bellows exocoel, and remaining next steam tube wore described valve body body 1 and was conducted with the cavity of described valve body.
In the utility model, also be provided with a valve rod 9, described valve rod is positioned at the top of described valve body, and one end of described valve rod wore described valve body body and be connected with described spheroid, and the other end of described valve rod is located by connecting in the driving mechanism that can drive it to move up and down.
Claims (7)
1. a superelevation low temperature hard seal ball valve, comprise valve body and be arranged at the spheroid (3) in valve body, it is characterized in that: between described valve body and spheroid, be provided with elastic hard sealing device, also on described valve body, be located by connecting a plurality of in order to the steam blowing mechanism to valve inner steam injection purging.
2. superelevation low temperature hard seal ball valve according to claim 1, it is characterized in that: described valve body comprises valve body body (1) and valve gap (2), described valve gap (2) is fixedly connected on a side of described valve body body (1), and and described valve body body (1) between form a cavity, described spheroid (3) activity is built in described cavity; Separately on described valve body body (1) and valve gap (2), be also formed with respectively feed pathway and liquid outlet channel, and described feed pathway and liquid outlet channel coaxially arranged.
3. superelevation low temperature hard seal ball valve according to claim 2, it is characterized in that: described elastic hard sealing device comprises having and varies with temperature and the bellows (4) of elastic telescopic, and be separately positioned on valve body body (1) and valve gap (2) Zhong upstream valve seat (5) and downstream valve seat (6), wherein, described upstream valve seat (5) and downstream valve seat (6) are circular, described upstream valve seat and downstream valve seat lay respectively at the both sides of described spheroid (3), and respectively and between described spheroid, form hard sealing pair, and described downstream valve seat (6) is also fixed relatively described valve gap (2) position, the outer ring surface of described upstream valve seat also and between the madial wall of described valve body body (1) forms and is slidably matched,
The inner ring surface of the madial wall of another described valve body body (1) and described upstream valve seat is ladder-type, described bellows (4) is movably placed between the madial wall and upstream valve seat (5) of described valve body body (1), and a side elasticity of described bellows (4) is resisted against on a step surface of described valve body body (1) madial wall, and the opposite side elasticity of described bellows (4) is resisted against on a step surface of described upstream valve seat (5) inner ring surface.
4. superelevation low temperature hard seal ball valve according to claim 3, is characterized in that: the medial axis of described bellows, upstream valve seat and downstream valve seat all overlaps mutually with the medial axis of described feed pathway and liquid outlet channel.
5. superelevation low temperature hard seal ball valve according to claim 4, it is characterized in that: described elastic hard sealing device also includes the guide shell (7) of a tubulose, inner chamber activity that one end of described guide shell (7) wore described bellows (4) are inserted in the interior ring of described upstream valve seat (5), and it is outer and stick together to form with the madial wall of described valve body body (1) and be slidably matched that the other end of described guide shell stretches out described bellows (4).
6. superelevation low temperature hard seal ball valve according to claim 3, it is characterized in that: this steam blowing mechanism is three, each steam blowing mechanism respectively includes a steam tube (8), one of them steam tube wore described valve body body (1) and was conducted with the inner chamber of described bellows, another steam tube wore described valve body body (1) and was conducted with described bellows exocoel, and remaining next steam tube wore described valve body body (1) and was conducted with the cavity of described valve body.
7. superelevation low temperature hard seal ball valve according to claim 3, it is characterized in that: be also provided with a valve rod (9), described valve rod is positioned at the top of described valve body, and one end of described valve rod wore described valve body body and was connected with described spheroid, and the other end of described valve rod is located by connecting in the driving mechanism that can drive it to move up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320493041.XU CN203395243U (en) | 2013-08-13 | 2013-08-13 | Ultrahigh low-temperature rigid seal ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320493041.XU CN203395243U (en) | 2013-08-13 | 2013-08-13 | Ultrahigh low-temperature rigid seal ball valve |
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| Publication Number | Publication Date |
|---|---|
| CN203395243U true CN203395243U (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320493041.XU Expired - Fee Related CN203395243U (en) | 2013-08-13 | 2013-08-13 | Ultrahigh low-temperature rigid seal ball valve |
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| CN (1) | CN203395243U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653807A (en) * | 2015-02-10 | 2015-05-27 | 无锡智能自控工程股份有限公司 | Residual oil separating ball valve for delaying coking |
-
2013
- 2013-08-13 CN CN201320493041.XU patent/CN203395243U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653807A (en) * | 2015-02-10 | 2015-05-27 | 无锡智能自控工程股份有限公司 | Residual oil separating ball valve for delaying coking |
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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 |
Granted publication date: 20140115 Termination date: 20150813 |
|
| EXPY | Termination of patent right or utility model |