CN202790608U - High-temperature high-pressure flat gate valve - Google Patents

High-temperature high-pressure flat gate valve Download PDF

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Publication number
CN202790608U
CN202790608U CN 201220458178 CN201220458178U CN202790608U CN 202790608 U CN202790608 U CN 202790608U CN 201220458178 CN201220458178 CN 201220458178 CN 201220458178 U CN201220458178 U CN 201220458178U CN 202790608 U CN202790608 U CN 202790608U
Authority
CN
China
Prior art keywords
valve
wedge
wedged
ring
flashboard
Prior art date
Application number
CN 201220458178
Other languages
Chinese (zh)
Inventor
张坤万
张建身
贺乐全
杨仕勇
刘明杰
Original Assignee
环球阀门集团有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 环球阀门集团有限公司 filed Critical 环球阀门集团有限公司
Priority to CN 201220458178 priority Critical patent/CN202790608U/en
Application granted granted Critical
Publication of CN202790608U publication Critical patent/CN202790608U/en

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Abstract

The utility model relates to a high-temperature high-pressure flat gate valve which comprises a valve body, a valve seat, a flashboard, a valve cover, a valve rod, a bracket, a handwheel, a sealing piece and an installation piece. The high temperature high pressure flat gate valve is mainly characterized in that a middle cavity self-sealing device is arranged between the outer side of the valve cover and the inner wall of the valve body, the middle cavity self-sealing device consists of a double-wedged sealing ring and a wedged backing ring which are installed on a conical bevel outside the valve cover. The lower wedged face of the double-wedged sealing ring is in motive seal fit with the conical bevel outside the valve cover. The upper wedged face of the double-wedged sealing ring is in motive seal fit with the lower-wedged face of the wedged backing ring. The excircle face of the double-wedged sealing ring is in motive seal fit with the inner wall of the valve body. The upper end face of the wedged backing ring is fixedly installed by virtue of four open rings in the inner wall installation groove of the valve body. The double-wedged sealing ring and the wedged backing ring are made of metal materials. A circular groove is prepared in the middle of the excircle face of the double-wedged sealing ring. The higher the pressure is, the better the sealing performance is. The high temperature high pressure flat gate valve has the advantages of reliable sealing performance, long service life and the like, and is suitable for high-temperature high-pressure medium working conditions for industries such as petroleum, petrochemicals and natural gas.

Description

High-temperature high-pressure flat-plate gate
Technical field
The utility model relates to valve field, particularly about a kind of plate valve.The utility model is applicable to the high-temperature high-pressure medium operating mode of the industries such as oil, petrochemical industry, natural gas.
Background technique
The lumen of existing plate valve is generally with bolts, and general pad, O RunddichtringO or the anistree gasket ring of adopting seals between valve gap and the valve body, greatly descends in high-temperature high-pressure state lower seal effect; Stressed effect was inhomogeneous when the double-flashboard Flat Sluice existed valve seat to contact with flashboard, the sealing force size that is distributed on the sealing surface is also different, in use can not guarantee the sealing force that provides enough, and the open and close moment of torsion is large, the long-term abrasion of coupling between flashboard and valve seat, flashboard and the flashboard, fragile, poor sealing performance, working life lack.
Summary of the invention
The purpose of this utility model is the shortcoming that exists for prior art, and the high-temperature high-pressure flat-plate gate of a kind of good seal performance, long service life is provided.
The technical solution of the utility model comprises valve body, valve seat, flashboard, valve gap, valve rod, support, handwheel, Sealing and assembling set, flashboard is comprised of left flashboard and right flashboard, be provided with stuffing box packing between valve rod and the valve gap, mainly be between the valve gap outside and valve interior wall, to be provided with the lumen self-seal device, described lumen self-seal device is comprised of installation folding wedge face seal ring and wedge surface gasket ring on the tapered slope in the valve gap outside, the lower wedge surface of folding wedge face seal ring cooperates with the tapered slope motive sealing in the valve gap outside, the upper wedge surface of folding wedge face seal ring cooperates with the lower wedge surface motive sealing of wedge surface gasket ring, the periphery of folding wedge face seal ring cooperates with the valve interior wall motive sealing, the upper-end surface of wedge surface gasket ring is fixedly press-fited by the pendant collet in the valve interior wall mounting groove, folding wedge face seal ring and wedge surface gasket ring adopt metallic material, are shaped with annular grooving in the middle of the periphery of folding wedge face seal ring.
In above technological scheme, left flashboard and right flashboard are installed in the pilot hole of upper voussoir by the centralized positioning axle, lower wedge block and upper voussoir wedge surface are connected, and along the valve rod axis direction spring are housed between upper voussoir and the lower wedge block, and upper voussoir upper end is fixedly connected with valve rod.
In above technological scheme, the stuffing box packing between valve rod and the valve gap adopts reverse V-shaped Expanded graphite to add the Stainless Steel Cloth filler, and the metal spacer ring is established at the filler middle part, and this metal spacer ring is connected with lubricating cup by the greasing hole.
The utility model beneficial effect compared with prior art is: be provided with the lumen self-seal device between valve gap and the valve body, under the pressure medium effect, mutually wedging sealing between the lower wedge surface of folding wedge face seal ring and valve gap tapered slope and wedge surface gasket ring, pressure more high sealing performance is better, and its sealability is reliable, long service life.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
High-temperature high-pressure flat-plate gate as shown in Figure 1, comprise valve body 1, valve seat, flashboard 5, valve gap 8, valve rod 7, support, handwheel, Sealing and assembling set, flashboard 5 is comprised of left flashboard and right flashboard, be provided with stuffing box packing 9 between valve rod 7 and the valve gap 8, between valve gap 8 outsides and valve body 1 inwall, be provided with the lumen self-seal device, described lumen self-seal device is comprised of installation folding wedge face seal ring 12 and wedge surface gasket ring 11 on the tapered slope in valve gap 8 outsides, the lower wedge surface of folding wedge face seal ring 12 cooperates with the tapered slope motive sealing in valve gap 8 outsides, the upper wedge surface of folding wedge face seal ring 12 cooperates with the lower wedge surface motive sealing of wedge surface gasket ring 11, the periphery of folding wedge face seal ring 12 cooperates with valve body 1 inwall motive sealing, the upper-end surface of wedge surface gasket ring 11 is fixedly press-fited by the pendant collet in the valve body 1 inwall mounting groove, folding wedge face seal ring 12 and wedge surface gasket ring 11 adopt metallic material, can be used for the condition of high temperature.Be shaped with annular grooving in the middle of the periphery of folding wedge face seal ring 12, improve the amount of deformation of folding wedge face seal ring 12 when pressurized, better contact with valve body 1, valve gap 8 sealings.The periphery contact position built-up welding Austenitic Stainless Steel of valve body 1 and folding wedge face seal ring 12, when the higher applying effect of pressure better.
Left flashboard and right flashboard are installed in the pilot hole of upper voussoir 4 by the centralized positioning axle, have guaranteed the coaxality of left flashboard and right flashboard.Lower wedge block 2 is connected with upper voussoir 4 wedge surfaces, along valve rod 7 axial directions spring 3 is housed between upper voussoir 4 and the lower wedge block 2, and upper voussoir 4 upper ends are fixedly connected with valve rod 7, and both wedge surfaces just contact when valve closing, produces effect to have improved wedge surface working life; When valve opening, upper voussoir 4 separates rapidly under the effect of spring 3 with lower wedge block 2, and flashboard 5 is very fast disengaging valve seat under the effect of medium and spring 3 also, has avoided long-term friction, improves the working life of valve.In valve rod 7 bottoms baffle plate 6 is housed, baffle plate 6 contacts with valve gap 8 bottom surfaces when valve rod 7 unlatchings put in place.
Stuffing box packing 9 between valve rod 7 and the valve gap 8 adopts reverse V-shaped Expanded graphite to add the Stainless Steel Cloth filler, the metal spacer ring is established at the filler middle part, this metal spacer ring is connected with lubricating cup 10 by the greasing hole, has self-sealing function, makes valve rod 7 positions be issued to the desirable seal effect in less pretightening force.

Claims (3)

1. high-temperature high-pressure flat-plate gate, comprise valve body (1), valve seat, flashboard (5), valve gap (8), valve rod (7), support, handwheel, Sealing and assembling set, flashboard (5) is comprised of left flashboard and right flashboard, be provided with stuffing box packing (9) between valve rod (7) and the valve gap (8), it is characterized in that between valve gap (8) outside and valve body (1) inwall, being provided with the lumen self-seal device, described lumen self-seal device is comprised of installation folding wedge face seal ring (12) and wedge surface gasket ring (11) on the tapered slope in valve gap (8) outside, the lower wedge surface of folding wedge face seal ring (12) cooperates with the tapered slope motive sealing in valve gap (8) outside, the upper wedge surface of folding wedge face seal ring (12) cooperates with the lower wedge surface motive sealing of wedge surface gasket ring (11), the periphery of folding wedge face seal ring (12) cooperates with valve body (1) inwall motive sealing, the upper-end surface of wedge surface gasket ring (11) is fixedly press-fited by the pendant collet in valve body (1) the inwall mounting groove, folding wedge face seal ring (12) and wedge surface gasket ring (11) adopt metallic material, are shaped with annular grooving in the middle of the periphery of folding wedge face seal ring (12).
2. high-temperature high-pressure flat-plate gate according to claim 1, it is characterized in that left flashboard and right flashboard are installed in the pilot hole of upper voussoir (4) by the centralized positioning axle, lower wedge block (2) is connected with upper voussoir (4) wedge surface, along valve rod (7) axial direction spring (3) is housed between upper voussoir (4) and the lower wedge block (2), upper voussoir (4) upper end is fixedly connected with valve rod (7).
3. high-temperature high-pressure flat-plate gate according to claim 1 and 2, it is characterized in that the reverse V-shaped Expanded graphite of stuffing box packing (9) employing between valve rod (7) and the valve gap (8) adds the Stainless Steel Cloth filler, the metal spacer ring is established at the filler middle part, and this metal spacer ring is connected with lubricating cup (10) by the greasing hole.
CN 201220458178 2012-09-08 2012-09-08 High-temperature high-pressure flat gate valve CN202790608U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220458178 CN202790608U (en) 2012-09-08 2012-09-08 High-temperature high-pressure flat gate valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220458178 CN202790608U (en) 2012-09-08 2012-09-08 High-temperature high-pressure flat gate valve

Publications (1)

Publication Number Publication Date
CN202790608U true CN202790608U (en) 2013-03-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220458178 CN202790608U (en) 2012-09-08 2012-09-08 High-temperature high-pressure flat gate valve

Country Status (1)

Country Link
CN (1) CN202790608U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103148231A (en) * 2013-03-20 2013-06-12 南通市电站阀门有限公司 High-temperature high-pressure parallel double-gate valve gate pair and assembling method thereof
CN104455509A (en) * 2014-11-21 2015-03-25 苏州福润机械有限公司 Gate valve
CN104832703A (en) * 2015-05-04 2015-08-12 中国海洋石油总公司 Two-way valve rod sealing structure of deep-sea high pressure valve and sealing anti-attrition test method
CN104879548A (en) * 2015-05-28 2015-09-02 扬中市第一蝶阀厂有限公司 Leak-proof valve
CN106704665A (en) * 2015-07-23 2017-05-24 德维阀门铸造(苏州)有限公司 High-temperature high-pressure valve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103148231A (en) * 2013-03-20 2013-06-12 南通市电站阀门有限公司 High-temperature high-pressure parallel double-gate valve gate pair and assembling method thereof
CN104455509A (en) * 2014-11-21 2015-03-25 苏州福润机械有限公司 Gate valve
CN104832703A (en) * 2015-05-04 2015-08-12 中国海洋石油总公司 Two-way valve rod sealing structure of deep-sea high pressure valve and sealing anti-attrition test method
CN104879548A (en) * 2015-05-28 2015-09-02 扬中市第一蝶阀厂有限公司 Leak-proof valve
CN106704665A (en) * 2015-07-23 2017-05-24 德维阀门铸造(苏州)有限公司 High-temperature high-pressure valve

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