CN201672080U - Novel coking tower overhead valve - Google Patents
Novel coking tower overhead valve Download PDFInfo
- Publication number
- CN201672080U CN201672080U CN2010201285833U CN201020128583U CN201672080U CN 201672080 U CN201672080 U CN 201672080U CN 2010201285833 U CN2010201285833 U CN 2010201285833U CN 201020128583 U CN201020128583 U CN 201020128583U CN 201672080 U CN201672080 U CN 201672080U
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- valve
- gap
- plate
- rod
- valve body
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B25/00—Doors or closures for coke ovens
- C10B25/20—Lids or closures for charging holes
- C10B25/22—Lids or closures for charging holes for ovens with vertical chambers
Abstract
The utility model relates to a novel coking tower overhead valve, which is applied to the coking tower of a petrochemical delay coking unit and comprises a rear valve cap, a valve body, a valve plate, a front valve cap, a support, an oil cylinder, a valve rod, a connecting flange and a coiler, wherein the rear valve cap, the front valve cap and the connecting flange are connected with the valve body through a bolt; the front valve cap is connected with the support; the oil cylinder is fixed on the support; the connecting flange is connected with the coking tower; one end of the valve plate is connected with the valve rod through a T-shaped joint; the expansion link of the oil cylinder is connected with the valve rod, and the valve plate is controlled by the valve rod to make linear motion to open or close the valve. Both ends of the inner side of the valve body are respectively provided with a seal pair; and the walls of the rear valve cap and the front valve cap are fixed with high-pressure steam joints. Floating type thermometal hard sealing with steam auxiliary sealing are adopted; a floating valve seat and the valve body are welded by a corrugated plate, and thereby, steam leakage is reduced, media are ensure not to leak into the middle cavity of the valve body, and the sealing is safe and reliable. The unsafe hidden troubles are eliminated, and the cold coking water pollution is reduced.
Description
Technical field
The utility model relates to the petrochemical technology field, and particularly the coke drum of delayed coking unit is a kind of coking tower overhead-valve.
Background technique
At present, the at present existing more than 40 cover delayed coking units in the whole nation, various places are newly-built and also have 20 at the delayed coking unit of building more and to overlap.With regard to production scale, a stove two towers (coke drum) flow process, two stove four-column process flows etc. are arranged.Generally all adopt the automatic tower top cover machine of blind lid or hydraulic pressure as the sealing of coke drum cover head, sealing effect is undesirable, and device fails to accomplish the sealed tube wire system.Problems such as the overhead time of decoking is long, cost of labor is high, maintenance expenses height are not improved at all.The tower top cover machine opens by HYDRAULIC CONTROL SYSTEM and cuts out, and sealing steel rings very easily ejects, and has hidden danger, and the leakage of toxic gas in the coke drum also can influence the healthy of operator.
The model utility content
The purpose of this utility model is: a kind of novel coking tower overhead-valve is provided, belongs to high temperature large caliber hard seal plate gate valve, medium is a high-temperature oil gas, is used for the coke cat head of delayed coking unit, realizes that leaking outside does not appear in medium, reduces steam consumption quantity.
The technical solution adopted in the utility model is: novel coking tower overhead-valve, form by back valve gap, valve body, valve plate, preceding valve gap, support, oil cylinder, valve rod, adpting flange and coil pipe.Back valve gap, preceding valve gap, adpting flange are connected on the valve body by bolt, preceding valve gap is connected with support, oil cylinder is fixed on the support, adpting flange is connected with coke drum, valve plate one end has T connector to be connected with valve rod, and the flexible rod of oil cylinder is connected with valve rod and realizes valve switch by valve rod control valve plate straight line motion.It is characterized in that: sealing pair is arranged respectively at the inboard two ends of valve body, back valve gap and preceding valve gap are housing, be fixed with the high pressure steam joint on the wall of back valve gap and preceding valve gap, lead to steam in the chamber that valve gap and valve body, preceding valve gap and valve plate are formed backward, vapor pressure is higher than the pressure by medium, guarantees that leaking outside does not appear in medium in the tower.
Described sealing pair is a floating seal, promptly is fixed with the rectangular upper valve base in the valve body inboard, and upper valve base is in a side of valve plate, the lower plane of upper valve base and valve plate planar slide sealing, in the valve body inboard rectangular lower valve base is arranged, lower valve base is at the opposite side of valve plate, at the flexible assembly in the bottom of lower valve base.Elastic component promotes lower valve base upwards, and the last plane of lower valve base is closely contacted and slipper seal with the valve plate lower plane.Elastic component can absorb automatically and expand and compensate for shrinkage, keeps between valve plate and upper valve base and valve plate and the lower valve base certain pressure being arranged, and plays seal action.This pressure is provided by high temperature resistant elastic component.
Described elastic component is made up of spring seat, belleville spring.Owing to thermal expansion, the belleville spring decrement increases during high temperature, lower valve base pressure is also increased, so the increase of the specific pressure between valve plate and the valve seat, owing to temperature reduces, elastic element recovers original decrement when driving valve, so does not influence the unlatching of valve.
For guaranteeing the sealing between lower valve base and the adpting flange, be welded with corrugated sheet between lower valve base and the adpting flange.Adopt the corrugated sheet welding manner, guarantee that medium can not leak in the valve body lumen, corrugated sheet can absorb the axial displacement that thermal expansion causes lower valve base.Logical steam in valve gap during work, vapor pressure is higher than more than the pressure medium 0.1Mpa, plays the auxiliary seal effect, has improved reliability.
The sealing pair of novel delayed coking drums overhead-valve is that floating seal adds steam auxiliary seal structure, and wherein, upper valve base is a fixed structure, and lower valve base is a floating structure, can absorb automatically to expand and compensate for shrinkage, keeps the certain pressure of valve plate and valve base chamber.Pressure is provided by high temperature resistant elastic component.Elastic component is made up of double-screw bolt, nut, spring seat, high temperature resistant belleville spring.Owing to thermal expansion, the belleville spring decrement increases during high temperature, floating valve seat pressure is also increased, so the increase of the specific pressure between valve plate and the seat ring, owing to temperature reduces, elastic element recovers original decrement when driving valve, so does not influence the unlatching of valve.For guaranteeing the sealing between floating valve seat and the adpting flange, adopt the corrugated sheet welding manner, guarantee that medium can not leak in the valve body lumen, corrugated sheet can absorb the floating valve seat axial displacement that thermal expansion causes.Logical steam in valve gap during work, vapor pressure is higher than more than the pressure medium 0.1Mpa, and steam in coke drum, plays the auxiliary seal effect by valve plate and seat ring clearance leakage, has improved reliability.Set up steam pipe coil at coking tower overhead-valve and coke drum joint, can prevent that unexpected dangerous situation from occurring, and in time eliminates safe hidden trouble.By above measure, reach the medium zero leakage, sealability height, overall structure safe and reasonable.
The key technical indexes of novel delayed coking drums overhead-valve: 1) structure: parallel Single disc gate valve structure; 2) application area: delayed coking unit coke drum top; 3) leakage rate: realize the zero leakage of medium; 4) close/open valve time :≤4min; 5) explosive-proof grade: Exd II BT4; 6) security level: IP54.
The beneficial effects of the utility model: novel coking tower overhead-valve, adopt the hard sealing of floating type bimetal to add the steam auxiliary seal; Adopt corrugated sheet to be welded to connect between floating valve seat and the valve body, reduce the sealed steam leakage rate, guarantee that medium can not leak in the valve body lumen, seal more safe and reliable; Increase delayed coking unit output, eliminate hidden danger, reduce the coke cooling water pollution.
Floating sealing structure can absorb thermal expansion, compensate for shrinkage automatically, and makes and remain certain specific pressure between floating valve seat and the valve plate, realizes the medium zero leakage.
Description of drawings
Fig. 1 is novel coking tower overhead-valve structural profile schematic representation.
Fig. 2 is a sealing pair structural profile schematic representation.
Among the figure, 1. back valve gap, 2. valve body, 3. valve plate, 4. before valve gap, 5. support, 6. oil cylinder, 7. valve rod, 8. adpting flange, 9. coil pipe, 10. elastic component, 11. upper valve bases, 12. lower valve bases, 13. corrugated sheets.
Embodiment
Embodiment 1: with a novel coking tower overhead-valve is example, and the utility model is described in further detail.
Consult Fig. 1.Novel coking tower overhead-valve is made up of back valve gap 1, valve body 2, valve plate 3, preceding valve gap 4, support 5, oil cylinder 6, valve rod 7, adpting flange 8 and coil pipe 9.Back valve gap 1, preceding valve gap 4, adpting flange 8 are connected on the valve body 2 by bolt, preceding valve gap 4 is connected with support 5, oil cylinder 6 is fixed on the support 5, adpting flange 8 is connected with coke drum, valve plate 3 one ends have T connector to be connected with valve rod 7, and the flexible rod of oil cylinder 6 is connected with valve rod 7 and realizes valve switch by valve rod 7 control valve plates 3 straight line motions.
At valve body 2 inboard two ends one group of sealing pair is arranged respectively.Consult Fig. 2.Sealing pair is one-sided floating seal, promptly is fixed with a rectangular metal upper valve base 11 in valve body 2 inboards, and upper valve base 11 is in a side (upper side) of valve plate 3, the lower plane of upper valve base 11 and valve plate 3 lower plane slipper seals.In valve body 2 inboards rectangular metal lower valve base 12 is arranged, lower valve base 12 is at the opposite side (downside) of valve plate 3, the flexible assembly 10 in the bottom of lower valve base 12.Elastic component 10 promotes lower valve base 12 upwards, and the last plane of lower valve base 12 is closely contacted and slipper seal with valve plate 3 planes.
Consult Fig. 2.Elastic component 10 is made up of spring seat and resistant to elevated temperatures belleville spring.Spring seat and resistant to elevated temperatures belleville spring are in the strip groove of adpting flange 8 upper-end surfaces.
Consult Fig. 2.Be welded with corrugated sheet 13 between lower valve base 12 and the adpting flange 8.The upper edge of bar shaped corrugated sheet 13 is welded on the lower edge of lower valve base 12, and the lower edge of bar shaped corrugated sheet 13 is welded on the upper edge, the outside of adpting flange 8.
Consult Fig. 1.Back valve gap 1 and preceding valve gap 4 are shell construction, back valve gap 1, preceding valve gap 4 form an independently cavity respectively after being connected on the valve body 2 by bolt, on the wall of back valve gap 1 and preceding valve gap 4, be fixed with a high pressure steam joint respectively, UNICOM in high pressure steam joint and the cavity.
Claims (4)
1. novel coking tower overhead-valve, by back valve gap (1), valve body (2), valve plate (3), preceding valve gap (4), support (5), oil cylinder (6), valve rod (7), adpting flange (8) and coil pipe (9) are formed, back valve gap (1), preceding valve gap (4), adpting flange (8) is connected on the valve body (2) by bolt, preceding valve gap (4) is connected with support (5), oil cylinder (6) is fixed on the support (5), adpting flange (8) is connected with coke drum, valve plate (3) one ends have T connector to be connected with valve rod (7), and the flexible rod of oil cylinder (6) is connected with valve rod (7) and realizes valve switch by valve rod (7) control valve plate (3) straight line motion; It is characterized in that: at the inboard two ends of valve body (2) sealing pair is arranged respectively, back valve gap (1) and preceding valve gap (4) are housing, are fixed with the high pressure steam joint on the wall of back valve gap (1) and preceding valve gap (4).
2. according to right 1 described a kind of novel coking tower overhead-valve, it is characterized in that: described sealing pair is a floating seal, promptly be fixed with rectangular upper valve base (11) in valve body (2) inboard, upper valve base (11) is in a side of valve plate (3), the lower plane of upper valve base (11) and valve plate (3) planar slide sealing, in valve body (2) inboard rectangular lower valve base (12) is arranged, lower valve base (12) is at the opposite side of valve plate (3), at the flexible assembly in the bottom of lower valve base (12) (10).
3. according to right 1 described a kind of novel coking tower overhead-valve, it is characterized in that: described elastic component (10) is made up of spring seat, belleville spring.
4. according to right 1 described a kind of novel coking tower overhead-valve, it is characterized in that: be welded with corrugated sheet (13) between lower valve base (12) and the adpting flange (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201285833U CN201672080U (en) | 2010-03-10 | 2010-03-10 | Novel coking tower overhead valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201285833U CN201672080U (en) | 2010-03-10 | 2010-03-10 | Novel coking tower overhead valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201672080U true CN201672080U (en) | 2010-12-15 |
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ID=43329492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201285833U Expired - Lifetime CN201672080U (en) | 2010-03-10 | 2010-03-10 | Novel coking tower overhead valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201672080U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836218A (en) * | 2012-11-22 | 2014-06-04 | 中国石油天然气集团公司 | Valve for coke tower |
| CN109158167A (en) * | 2018-10-30 | 2019-01-08 | 长沙天创粉末技术有限公司 | A kind of dustless agitating ball mill of intermittent automatic feed/discharge |
| CN109373003A (en) * | 2018-11-30 | 2019-02-22 | 洛阳三旋特种阀门有限公司 | A kind of auxiliary sealing coke drum overhead-valve of electronic single screw gas |
| CN113555271A (en) * | 2021-05-21 | 2021-10-26 | 闫琪明 | Sealing waterproof device for photomultiplier |
| RU221675U1 (en) * | 2023-10-06 | 2023-11-16 | Акционерное общество "ПЕНЗТЯЖПРОМАРМАТУРА" | GATE VALVE FOR INSTALLATION OF SLOW COKING |
-
2010
- 2010-03-10 CN CN2010201285833U patent/CN201672080U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836218A (en) * | 2012-11-22 | 2014-06-04 | 中国石油天然气集团公司 | Valve for coke tower |
| CN109158167A (en) * | 2018-10-30 | 2019-01-08 | 长沙天创粉末技术有限公司 | A kind of dustless agitating ball mill of intermittent automatic feed/discharge |
| CN109373003A (en) * | 2018-11-30 | 2019-02-22 | 洛阳三旋特种阀门有限公司 | A kind of auxiliary sealing coke drum overhead-valve of electronic single screw gas |
| CN109373003B (en) * | 2018-11-30 | 2023-08-22 | 洛阳三旋智能装备有限公司 | Electric single-screw gas-assisted sealed coke tower top valve |
| CN113555271A (en) * | 2021-05-21 | 2021-10-26 | 闫琪明 | Sealing waterproof device for photomultiplier |
| CN113555271B (en) * | 2021-05-21 | 2024-04-19 | 闫琪明 | Sealing waterproof device for photomultiplier |
| RU221675U1 (en) * | 2023-10-06 | 2023-11-16 | Акционерное общество "ПЕНЗТЯЖПРОМАРМАТУРА" | GATE VALVE FOR INSTALLATION OF SLOW COKING |
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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: 20101215 |
|
| CX01 | Expiry of patent term |