CN200961722Y - High temperature oil gas block valve for delaying coking - Google Patents
High temperature oil gas block valve for delaying coking Download PDFInfo
- Publication number
- CN200961722Y CN200961722Y CN 200620135934 CN200620135934U CN200961722Y CN 200961722 Y CN200961722 Y CN 200961722Y CN 200620135934 CN200620135934 CN 200620135934 CN 200620135934 U CN200620135934 U CN 200620135934U CN 200961722 Y CN200961722 Y CN 200961722Y
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- valve
- temperature
- oil gas
- temperature oil
- stuffing box
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Abstract
The utility model provides a delaying coking high temperature oil and gas closing valve, since a heat abstractor is added and equipped between a stuffing box and a shell on the valve, the change of temperature is balanced by the action of the heat abstractor. When the temperature in the valve changes, namely when the open (closed) condition of the valve changes, the temperature of the stuffing box don't basically change with the temperature inside the valve and balances at a temperature near the room temperature, thereby ensuring the reliability of stuffing sealing property and prolonging the using life of the valve. Moreover, since the driving device adopts a gas driving gearing method, the working efficiency is increased, the labor intensity of the workers is decreased, and the working environment of the workers is improved. The improvement of the valve structure form and the further unifying of the material choosing, namely the shell of the valve, main material of the gate valve and main materials of the gate valve choose ASTM A217 C5, and the valve seat and materials of the gate valve sealing surface choose Shirley cemented carbide, which synthetically increases the whole feature of the oil and gas closing valve, prolonging the using life of the valve and meeting the working conditional requirements of delaying the coking device.
Description
Technical field
The utility model relates to a kind of oil gas isolating valve door device on the petrochemical industry delayed coking unit.
Technical background
" delayed coking unit " is the important device in the petroleum refinery, and its function is an extracting oil product from residual oil, improves the extract content of oil product.The coking tower middle part is provided with oil gas and cuts off valve, its frequency of okperation: open (pass) every day respectively once; Working medium: oil gas, coke powder, medium have the stronger erosion to valve; Operating temperature: between normal temperature～450 ℃ (two operation point), whenever open (pass) once, temperature cycles changes once.This shows that it is different with most valves that oil gas cuts off the residing operating mode of valve, the main distinction is as follows: solid particle (coke powder) is 1. arranged under the high temperature, and serious to the valve erosion, common valve can not be suitable for.2. operating temperature alternate, and (20 ℃～450 ℃) frequent changes (twice of every day) on a large scale, filler leakiness.
In the prior art, the disconnected valve (see figure 2) of traditional oils air bound adopts the carbon steel valve, and the sealing surface between valve seat and the flashboard adopts Cr13 type stainless steel, does not take corresponding measure for filler leakiness, bad seals and valve erosion that the temperature frequent variations causes.When the oil gas isolating valve was closed, the valve downstream place carried out coke cleaning, and this moment, the valve temperature was reduced to room temperature or a little more than room temperature, coke cleaning finishes, and after feeding intake, medium temperature rises to 450 ℃ rapidly during valve opening, and valve is worked under the temperature of alternate.Disconnected its stuffing box of valve of traditional oils air bound directly links to each other with body cavity, and the temperature variation at stuffing box place almost changes identical (20 ℃～450 ℃) with the valve body cavity temperature.The frequent variations of this big temperature difference is extremely unfavorable to packing seal, can cause the packing seal seepage very soon, needs often to adjust filler, and the filler life-span is low and be unfavorable for the safety of device.In addition, what the transmission device of valve adopted is handwheel, and efficient is low, labor intensity is big, operation is dangerous.
Summary of the invention
The utility model provides a kind of delayed coking high-temperature oil gas isolating valve at the operating mode characteristics of delayed coking unit and the damaged condition analysis of valve in the past, and it can satisfy operating temperature sealability of filler during alternate on a large scale.
For achieving the above object, the technological scheme taked of the utility model is:
A kind of delayed coking high-temperature oil gas isolating valve comprises the transmission device, valve housing and the stuffing box that link to each other with valve rod, it is characterized in that having set up sink between stuffing box and valve housing.
The above-mentioned transmission device that links to each other with valve rod adopts Pneumatic actuator.
The above-mentioned delayed coking high-temperature oil gas isolating valve that the utility model provides owing between stuffing box and valve housing, set up sink, by the effect of sink, balance variation of temperature.When in the valve during temperature variation, when promptly valve was opened (pass) change of state, stuffing box place temperature was substantially with temperature change in the valve, but was equilibrated on the temperature near room temperature, guaranteed the gland sealed reliability, prolonged the working life of valve.In addition,, improved working efficiency, alleviated working strength of workers, improved workman's work situation because transmission device has adopted pneumatic gearing.
Description of drawings
Fig. 1 is the utility model oil gas isolating valve embodiment's a structural representation;
Fig. 2 is the structural representation of the preceding traditional oil gas isolating valve (using common gate valve) of remodeling.
Embodiment
As shown in Figure 1, among the oil gas isolating valve embodiment that the utility model provides, structure to traditional oils gas isolating valve has been carried out following improvement and innovation: 1. set up the thermally equilibrated sink 2 of maintenance stuffing box between stuffing box 3 and valve housing 1, to satisfy valve between normal temperature～450 ℃ during alternate, the sealability of filler.2. the transmission device that links to each other with valve rod adopts Pneumatic actuator 4, to increase work efficiency, alleviates working strength of workers and improves workman's work situation.
In addition, when the oil gas isolating valve was opened, medium was high-temperature oil gas and coke powder (450 ℃) in the valve, and flow velocity very fast (20m/s).Just very serious under the normal temperature to the body cavity erosion, and 30% the when strength character of Ordinary Steel is reduced to room temperature under 450 ℃ the high temperature.Be the comprehensive overall performance that promotes the oil gas isolating valve, prolong valve working life, at solid particle under the high temperature (coke powder) to serious this problem of valve erosion, also done following 2 improvement in the valve selection: 1. the housing of valve and flashboard material of main part change ASTM A217 C5 into by carbon steel (WCB), need with the adaptation condition temperature, make valve have excellent high and abrasion resistance energy.2. the seal face materials between valve seat and the flashboard changes the Si Taili cemented carbide into by Cr13 type stainless steel, to guarantee the erosive wear resistance under the high temperature.
Though above in conjunction with the accompanying drawings detailed description has been made in a preferred embodiment of the present utility model; but those skilled in the art are appreciated that; in design scope of the present utility model; can also make multiple variation and remodeling to this embodiment; will be understood that these variations and remodeling all will drop in the protection domain of claim qualification.
Claims (4)
1, a kind of delayed coking high-temperature oil gas isolating valve comprises the transmission device (4), valve housing (1) and the stuffing box (3) that link to each other with valve rod, it is characterized in that having set up sink (2) between stuffing box (3) and valve housing (1).
2, delayed coking high-temperature oil gas isolating valve according to claim 1 is characterized in that the above-mentioned transmission device that links to each other with valve rod (4) adopts pneumatic actuator.
3, delayed coking high-temperature oil gas isolating valve according to claim 1 is characterized in that housing (1), the flashboard material of main part of above-mentioned valve adopts ASTM A217 C5.
4, delayed coking high-temperature oil gas isolating valve according to claim 1 is characterized in that the seal face materials between above-mentioned valve valve seat and the flashboard adopts the Si Taili cemented carbide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620135934 CN200961722Y (en) | 2006-10-08 | 2006-10-08 | High temperature oil gas block valve for delaying coking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620135934 CN200961722Y (en) | 2006-10-08 | 2006-10-08 | High temperature oil gas block valve for delaying coking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200961722Y true CN200961722Y (en) | 2007-10-17 |
Family
ID=38798239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620135934 Expired - Lifetime CN200961722Y (en) | 2006-10-08 | 2006-10-08 | High temperature oil gas block valve for delaying coking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200961722Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103717954A (en) * | 2011-07-29 | 2014-04-09 | 喜开理株式会社 | Fluid control valve |
| CN104373624A (en) * | 2014-10-20 | 2015-02-25 | 圣博莱阀门有限公司 | Ultrahigh temperature wear-resistant ball valve |
-
2006
- 2006-10-08 CN CN 200620135934 patent/CN200961722Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103717954A (en) * | 2011-07-29 | 2014-04-09 | 喜开理株式会社 | Fluid control valve |
| US9200721B2 (en) | 2011-07-29 | 2015-12-01 | Ckd Corporation | Fluid control valve |
| TWI555941B (en) * | 2011-07-29 | 2016-11-01 | Ckd Corp | Fluid control valve |
| CN104373624A (en) * | 2014-10-20 | 2015-02-25 | 圣博莱阀门有限公司 | Ultrahigh temperature wear-resistant ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071017 |
|
| EXPY | Termination of patent right or utility model |