CN103398190A - Super high-low temperature hard seal ball valve - Google Patents
Super high-low temperature hard seal ball valve Download PDFInfo
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- CN103398190A CN103398190A CN2013103513419A CN201310351341A CN103398190A CN 103398190 A CN103398190 A CN 103398190A CN 2013103513419 A CN2013103513419 A CN 2013103513419A CN 201310351341 A CN201310351341 A CN 201310351341A CN 103398190 A CN103398190 A CN 103398190A
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- valve
- valve body
- valve seat
- bellows
- low temperature
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Abstract
The invention discloses a super high-low temperature hard seal ball valve which comprises a valve body and a ball arranged in the valve body, wherein an elastic hard seal device is arranged between the valve body and the ball; a plurality of steam blowing mechanisms, which are used for injecting steam into the valve body and blowing the interior of the valve body, are in positioning connection with the valve body. As the elastic hard seal device is arranged between the valve body and the ball, the sealing effect can be effective under a high-temperature state, and the ball is prevented from being clamped due to thermal expansion, that is, the working state of the ball valve is ensured to be stable; moreover, as the steam blowing mechanisms, which are used for injecting steam into the valve body and blowing the interior of the valve body, are in positioning connection with the valve body, on one hand, resid and oil gas can be prevented from entering the ripples of a corrugated tube and coking on the inner and outer sides of the corrugated tube effectively, that is, the corrugated tube is prevented from losing elasticity, on the other hand, the corrugated tube can be prevented from getting instable, so as to avoid leakage caused by un-uniform pressing force on an upstream valve seat.
Description
Technical field
The present invention relates to the ball valve technical field, a kind of superelevation low temperature hard seal ball valve specifically is 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 simultaneously the whole moment of torsion of valve is in a rational scope, and the Percent of contact area between spheroid and valve seat also requires highlyer, so just can reach design effect.But when actual production: due to the impact that the restriction that is subjected to machining accuracy and through-flow medium wash 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 invention provides a kind of superelevation low temperature hard seal ball valve, this ball valve is, stable working state good in superelevation low temperature environment seal performance not only, and long service life.
The present invention 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 the 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 a further improvement on the present invention, 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, also be formed with respectively feed pathway and liquid outlet channel, and described feed pathway and liquid outlet channel coaxially arranged.
as a further improvement on the present invention, described elastic hard sealing device comprises having and varies with temperature and the bellows of elastic telescopic, and be separately positioned on upstream valve seat and the downstream valve seat in valve body body and valve gap, 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 form hard sealing pair respectively and between described spheroid, 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 a further improvement on the present invention, 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 a further improvement on the present invention, 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 with the madial wall of described valve body body, stick together to form and be slidably matched that the other end of described guide shell stretches out described bellows.
As a further improvement on the present invention, 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 a further improvement on the present invention, also be provided with a valve rod, described valve rod is positioned at the top of described valve body, and an end of described valve rod wore described valve body body and was connected with described spheroid, the driving mechanism that the other end of described valve rod is located by connecting and moves up and down in driving it.
The invention has the beneficial effects as follows: by between the valve body at this ball valve and spheroid, being provided with the elastic hard sealing device, not only can under the condition of high temperature, play sealing effect effectively, and be unlikely to again because of thermal expansion, to make the spheroid jam, guarantee the 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 prevent effectively 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 the bellows unstability on the other hand, avoid causing and leakage that cause uneven to the impacting force of upstream valve seat.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the assembly structure schematic diagram of valve body described in the present invention, spheroid and elastic hard sealing device;
Fig. 3 is the plan view of superelevation low temperature hard seal ball valve in the present invention.
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 to a preferred embodiment of the present invention will be described in detail.
A kind of superelevation low temperature hard seal ball valve of the present invention, comprise valve body and be arranged at the spheroid 3 in valve body, between described valve body and spheroid, be provided with the 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 the spheroid jam, guarantee the ball valve stable working state; And installation steam blowing mechanism, can prevent effectively 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 the bellows unstability on the other hand, and then avoid causing and leakage that cause uneven to the impacting force of upstream valve seat.
In the present invention, 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, also be formed with respectively feed pathway and liquid outlet channel, and described feed pathway and liquid outlet channel coaxially arranged.
in the present invention, described elastic hard sealing device comprises having and varies with temperature and the bellows 4 of elastic telescopic, and be separately positioned on upstream valve seat 5 and the downstream valve seat 6 in valve body body 1 and valve gap 2, 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 form hard sealing pair respectively and between described spheroid, 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 utilizing bellows for the upstream valve seat, to provide impacting force as elastic element, namely the upstream valve seat can be pressed on spheroid and with the 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 present invention, 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 with the madial wall of described valve body body 1, stick together to form and be slidably matched that the other end of described guide shell stretches out described bellows 4.
In the present invention, 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 present invention, also be provided with a valve rod 9, described valve rod is positioned at the top of described valve body, and an end of described valve rod wore described valve body body and was connected with described spheroid, the driving mechanism that the other end of described valve rod is located by connecting and moves up and down in driving it.
Claims (7)
1. 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 the 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), also be 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 upstream valve seat (5) and the downstream valve seat (6) in valve body body (1) and valve gap (2), 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 form hard sealing pair respectively and between described spheroid, 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, it 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 with the madial wall of described valve body body (1), stick together to form 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: also be provided with a valve rod (9), described valve rod is positioned at the top of described valve body, and an end of described valve rod wore described valve body body and was connected with described spheroid, the driving mechanism that the other end of described valve rod is located by connecting and moves up and down in driving it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103513419A CN103398190A (en) | 2013-08-13 | 2013-08-13 | Super high-low temperature hard seal ball valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103513419A CN103398190A (en) | 2013-08-13 | 2013-08-13 | Super high-low temperature hard seal ball valve |
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| CN103398190A true CN103398190A (en) | 2013-11-20 |
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| CN2013103513419A Pending CN103398190A (en) | 2013-08-13 | 2013-08-13 | Super high-low temperature hard seal ball valve |
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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 CN2013103513419A patent/CN103398190A/en active Pending
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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Application publication date: 20131120 |
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| WD01 | Invention patent application deemed withdrawn after publication |