CN201547387U - Control gate valve for delaying coking sequence - Google Patents
Control gate valve for delaying coking sequence Download PDFInfo
- Publication number
- CN201547387U CN201547387U CN2009202221215U CN200920222121U CN201547387U CN 201547387 U CN201547387 U CN 201547387U CN 2009202221215 U CN2009202221215 U CN 2009202221215U CN 200920222121 U CN200920222121 U CN 200920222121U CN 201547387 U CN201547387 U CN 201547387U
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- China
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- valve
- temperature
- control gate
- flashboard
- sequence control
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- Expired - Fee Related
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Abstract
The utility model provides a control gate valve for delaying coking sequence, which comprises a valve body, a valve seat, a valve cap, a gate board, a valve rod, a bracket and a transmission mechanism, wherein a stuffing box is arranged between the valve cap and the valve rod; a heat radiating device is arranged on the outer wall of the neck of the valve cap; and blow down valves communicated with high-temperature vapor are arranged on the valve cap and the valve body. Because the heat radiating device is arranged on the outer wall of the neck of the valve cap, the temperature in the stuffing box basically does not change with the great change of temperature in a valve cavity; when the valve is opened or closed, the temperature in the valve greatly changes, while the temperature in the stuffing box still approaches the room temperature, thereby ensuring the reliability of stuffing seal, and effectively solving the technical problem that when the working temperature greatly changes, the sealing property of the stuffing is poor; and because the blow down valves are arranged on the valve cap and the valve body, the problem of coking caused by solid particles formed by coke powder when the temperature falls is solved, thereby prolonging the service life of the valve.
Description
Technical field the utility model belongs to the mechanical valve class, is specifically related to the sequence control gate valve that a kind of delayed coking unit uses.
Background technique delayed coking sequence control of the prior art gate valve, (two operation point) alternation is opened (pass) every day once in 20 ℃～450 ℃ temperature ranges, and temperature cycles changes once.The stuffing box of this delayed coking sequence control gate valve directly links to each other with the valve body body cavity, the temperature variation at stuffing box place almost changes consistent with the valve body cavity temperature, the frequent variations of this big temperature difference is extremely unfavorable to packing seal, will soon cause the filler seepage, even cause fire, need often to change filler; Coking in the valve pocket causes valve seal to lose efficacy, and causes valve shortening in working life, functional reliability to reduce, and directly has influence on the Security of relevant device.
The summary of the invention the purpose of this utility model is to provide that a kind of sealability is reliable, long service life, be difficult for the delayed coking sequence control gate valve of coking.
For achieving the above object, the technological scheme taked of the utility model is:
A kind of delayed coking sequence control gate valve comprises valve body, valve seat, valve gap, flashboard, valve rod, support and driving mechanism, is provided with stuffing box between valve gap and the valve rod, is provided with sink on valve gap neck outer wall; The blow down valve of logical high-temperature vapour is set on valve gap and the valve body.
Described flashboard and valve rod joint are provided with baffle plate.
Described blow down valve is provided with restriction orifice.
Described driving mechanism is pneumatic or motor drive mechanism.
Described valve gap, valve body and flashboard adopt Cr-Mo steel ASTM A217 C5 material.
Sealing surface between described valve seat and the flashboard is a cobalt base hard alloy material.
The delayed coking sequence control gate valve that the utility model provides, owing on valve gap neck outer wall, be provided with sink, temperature in the stuffing box is not changed with the temperature in the valve pocket substantially significantly and change, when valve opening or when closing, temperature in the valve changes significantly, and the temperature in the stuffing box is still near room temperature, guaranteed the gland sealed reliability, prolong the working life of valve, thereby solved this technical problem of sealability variation of filler when operating temperature changes significantly effectively.Owing on valve gap and valve body, be provided with blow down valve, solved that coke powder when temperature descends is formed solid particle and the coking problem that forms.In addition, by being provided with baffle plate, when the valve regulated flow, prevent the phenomenon that causes flashboard and valve rod to break away from because of fluid impact at flashboard and valve rod joint.
Description of drawings Fig. 1 is a structural representation of the present utility model.
Among the figure: the 1-valve body; The 2-valve seat; The 3-flashboard; The 4-valve rod; The 5-valve gap; The 6-radiating fin; The 7-stuffing box; The 8-driving mechanism; The 9-support; The 10-blow down valve; The 11-baffle plate.
Embodiment as shown in Figure 1, a kind of delayed coking sequence control gate valve that the utility model provides, comprise valve body 1, valve seat 2, flashboard 3, valve rod 4, valve gap 5, support 9 and driving mechanism 8, valve seat 2 is arranged in the valve body 1, valve rod 4 tops connect driving mechanism 8, the bottom connects flashboard 3, and driving mechanism 8 drives flashboard 3 by valve rod 4 and does vertical motion.
Be respectively equipped with the blow down valve 10 of four logical high-temperature vapours on valve gap 5 and valve body 1, blow down valve 10 is provided with restriction orifice is blown into steam with adjusting flow.Blow down valve 10 on the valve gap 5 purges the sealing surface of flashboard, to prevent coking by when flashboard is mentioned; The blow down valve of valve body 1 bottom is by purging body cavity, to prevent coking; The blow down valve at stuffing box 7 places can prevent the filler coking, thereby has guaranteed filler place reliable sealing.In a word, coke powder was formed solid particle and the coking problem that forms when blow down valve 10 had solved temperature in the valve and descends, and had prolonged the working life of valve.
Flashboard 3 and valve rod 4 joints are provided with baffle plate 11, traditional gate valve can only standard-sized sheet or complete shut-down, can not regulate flow, and the utility model is provided with baffle plate 11, when the valve regulated flow, the phenomenon of flashboard and valve rod disengaging can be prevented to cause, 50% situation downward modulation amount of restriction can be no more than at flashboard 3 Lifts because of fluid impact.
When gate valve is opened, the rate of flow of fluid speed very high (20m/s) in the valve, very serious to valve body 1 inner chamber erosion, and medium is the oil gas and the coke powder (450 ℃) of high temperature, flashboard 3 had strong wallop, thereby cause the wearing and tearing of flashboard.For effectively solving the erosion and the shock problem of fluid, valve gap 5 of the present utility model, valve body 1 and flashboard 3 are made by Cr-Mo steel ASTM A217 C5 material, seal face materials between valve seat 2 and the flashboard 3 adopts cobalt base hard alloy, to improve the wear-resisting property of valve, prolongs valve working life.
Above-described only is the utility model embodiment.Should be understood that those of ordinary skill for valve technology field; under technology enlightenment provided by the utility model; can also make other equivalent modifications and improvement, all can realize the purpose of this utility model, all should be considered as protection domain of the present utility model.
Claims (6)
1. a delayed coking sequence control gate valve comprises valve body, valve seat, valve gap, flashboard, valve rod, support and driving mechanism, is provided with stuffing box between valve gap and the valve rod, it is characterized in that: be provided with sink on valve gap neck outer wall; The blow down valve of logical high-temperature vapour is set on valve gap and the valve body.
2. delayed coking sequence control gate valve according to claim 1 is characterized in that: described flashboard and valve rod joint are provided with baffle plate.
3. delayed coking sequence control gate valve according to claim 1, it is characterized in that: described blow down valve is provided with restriction orifice.
4. delayed coking sequence control gate valve according to claim 1 is characterized in that: described driving mechanism is pneumatic or motor drive mechanism.
5. delayed coking sequence control gate valve according to claim 1 is characterized in that: described valve gap, valve body and flashboard adopt Cr-Mo steel ASTM A217 C5 material.
6. delayed coking sequence control gate valve according to claim 1 is characterized in that: the sealing surface between described valve seat and the flashboard is a cobalt base hard alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202221215U CN201547387U (en) | 2009-12-14 | 2009-12-14 | Control gate valve for delaying coking sequence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202221215U CN201547387U (en) | 2009-12-14 | 2009-12-14 | Control gate valve for delaying coking sequence |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201547387U true CN201547387U (en) | 2010-08-11 |
Family
ID=42602560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202221215U Expired - Fee Related CN201547387U (en) | 2009-12-14 | 2009-12-14 | Control gate valve for delaying coking sequence |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201547387U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121382A (en) * | 2014-07-18 | 2014-10-29 | 凯喜姆阀门有限公司 | Anti-coking gate valve |
| CN109253270A (en) * | 2018-10-15 | 2019-01-22 | 兰州高压阀门有限公司 | A kind of muff gate valve under special operation condition |
| CN110388503A (en) * | 2018-04-17 | 2019-10-29 | 中石化广州工程有限公司 | The packing seal structure and its application method of valve used in delayed coking unit |
-
2009
- 2009-12-14 CN CN2009202221215U patent/CN201547387U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121382A (en) * | 2014-07-18 | 2014-10-29 | 凯喜姆阀门有限公司 | Anti-coking gate valve |
| CN104121382B (en) * | 2014-07-18 | 2016-08-24 | 凯喜姆阀门有限公司 | Anti-coking gate valve |
| CN110388503A (en) * | 2018-04-17 | 2019-10-29 | 中石化广州工程有限公司 | The packing seal structure and its application method of valve used in delayed coking unit |
| CN109253270A (en) * | 2018-10-15 | 2019-01-22 | 兰州高压阀门有限公司 | A kind of muff gate valve under special operation condition |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20171214 |