CN202646749U - High-temperature high-pressure large-diameter overall forging wedged gate valve - Google Patents
High-temperature high-pressure large-diameter overall forging wedged gate valve Download PDFInfo
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- CN202646749U CN202646749U CN 201220337514 CN201220337514U CN202646749U CN 202646749 U CN202646749 U CN 202646749U CN 201220337514 CN201220337514 CN 201220337514 CN 201220337514 U CN201220337514 U CN 201220337514U CN 202646749 U CN202646749 U CN 202646749U
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- valve
- valve body
- sealing
- valve gap
- wedged
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Abstract
The utility model relates to a high-temperature high-pressure large-diameter overall forging wedged gate valve. The forging wedged gate valve comprises a valve body, a valve seat, a gate plate, a valve rod, a valve cover, a support, a transmission mechanism, a sealing piece and a mounting piece, wherein the gate plate is of a wedged structure; the valve body serves as a forge piece; a valve body inlet channel, a valve body outlet channel and a valve body middle channel form an overall structure; the middle channel adopts a pressure self-sealing structure; the pressure self-sealing structure consists of a valve cover, a sealing ring and a clamping ring; the lower end surface of the valve cover is arranged on a step of the middle channel of the valve body in a pressing way; an outer conical surface is arranged on the valve cover; an inner conical surface matched with the outer conical surface of the valve cover is arranged on the sealing ring; and the upper end surface of the sealing ring is arranged between the valve body and the valve cover by the clamping ring in the pressing way. The forging wedged gate valve has the advantages of high temperature resistance, high pressure resistance, reliable sealing performance, low manufacturing cost and the like, and is easy to manufacture and suitable for being used on heavy-caliber medium pipelines.
Description
Technical field
The utility model relates to valve field, particularly about a kind of wedge action valve.The utility model is suitable for the high-temperature high-pressure medium operating mode of the industries such as chemical industry, electric power, metallurgy.
Background technique
Wedge gate valve is more in sector applications such as oil, chemical industry, pharmacy, electric power, metallurgy, and normally used is to adopt the casting valve body, and valve body is connected with the valve gap bolt, stainless steel clamp flexible graphite gasket or the sealing of anistree gasket ring, and this type of valve can not bear the high pressure operating mode; The major diameter gate valve that uses under the high temperature and high pressure condition generally adopts split to forge the valve body that welds after machining, it is the self sealing structure that Stainless Steel Wire adds Expanded graphite that the valve lumen adopts seal ring material, because Expanded graphite is nonmetallic material, when pressure medium surpasses Class2000 pound level, the power that large-diameter valves lumen seal ring bears is larger, the compress variation of seal ring is very large, and lumen just is easy to leak like this.In addition, because weld seam is long, bonding area is large, so the welding difficulty is larger, weldquality is not ideal enough in welding process for the Split type welded valve body, and particularly often there are the defectives such as pore and fine crack in the valve body weld seam position of alloy steel material; Also must carry out temper after the valve body welding, to eliminate welding stress.Adopt the valve of split smithwelding structure both to increase cost of production, lengthened the manufacture cycle, and withstand voltage properties is poor, and at high pressure and the worst hot case of the industries such as chemical industry, electric power, metallurgy, the valve that the welding type valve body is forged in casting commonly used and split can't satisfy working condition requirement.
Summary of the invention
The purpose of this utility model is the deficiency that exists for prior art, provide a kind of high temperature resistant, high pressure resistant, sealability reliable, easy processing, low cost of manufacture, is applicable to the High Temperature High Pressure major diameter solid forging wedge action valve of large diameter pipeline operating mode.
The technical solution of the utility model comprises valve body, valve seat, flashboard, valve rod, valve gap, support, driving mechanism, Sealing and assembling set, flashboard is wedge-shaped structure, valve seat has the wedge-type seal face that cooperatively interacts with flashboard, and valve body is shaped with inlet passage, outlet passage and Zhong Dao; Mainly be that valve body is forging, valve body inlet passage, outlet passage and middle road are overall structure; Middle road adopts the pressure self-sealing structure, this pressure self-sealing structure is comprised of valve gap, seal ring, snap ring, the valve gap lower end surface is fitted on the step in road in the valve body, valve gap is shaped with outer conical surface, seal ring is shaped with the internal conical surface that cooperatively interacts with the valve gap outer conical surface, and the seal ring upper-end surface is fitted between valve body and the valve gap by snap ring.
In above technological scheme, seal ring adopts stainless steel material, difference pile-up welding hard alloy material between seal ring and valve gap and the valve body surface of contact.
In above technological scheme, is shaped with sealing surface in the middle of the valve gap lower end surface, sealing surface and the flashboard upper-end surface formation sealing pair that cooperatively interacts on this.
In above technological scheme, adopt the reversed V-shape stuffing seal between valve rod and the valve gap.
The utility model beneficial effect compared with prior art is that valve body adopts solid forging, the road adopts the pressure self-sealing structure in the valve body, have high temperature resistant, high pressure resistant, the advantages such as sealability reliable, easy processing, low cost of manufacture, be applicable to the large diameter pipeline operating mode and use.
Description of drawings
Fig. 1 is the structural representation of this utility model.
Embodiment
High Temperature High Pressure major diameter solid forging wedge action valve as shown in Figure 1, comprise valve body 1, valve seat 2, flashboard 3, valve rod 4, valve gap 7, support, driving mechanism 9, Sealing and assembling set, flashboard 3 is wedge-shaped structure, valve seat 2 has the wedge-type seal face that cooperatively interacts with flashboard 3, and valve body 1 is shaped with inlet passage, outlet passage and Zhong Dao; Valve body 1 is forging, and namely valve body 1 adopts the Forging Technology manufacturing, and valve body 1 inlet passage, outlet passage and middle road are overall structure, its good pressure-resistant performance, and manufacturing process is simple, cost is low; The road adopts the pressure self-sealing structure in the valve body 1, this pressure self-sealing structure is comprised of valve gap 7, seal ring 5, snap ring, valve gap 7 lower end surfaces are fitted on the step in road in the valve body 1, valve gap 7 is shaped with outer conical surface, seal ring 5 is shaped with the internal conical surface that cooperatively interacts with valve gap 7 outer conical surface, and seal ring 5 upper-end surfaces are fitted between valve body 1 and the valve gap 7 by snap ring, and pressure medium promotes valve gap 7 and moves up, itself and seal ring 5 wedgings are sealed, applicable high pressure, worst hot case.
Is shaped with sealing surface 6 in the middle of valve gap 7 lower end surfaces, sealing surface 6 and the flashboard 3 upper-end surfaces formation sealing pair that cooperatively interacts this on, namely when flashboard 3 unlatchings put state in place, the upper sealing surface 6 compression fit formation sealing pair in its upper-end surface and valve gap 7 lower end surfaces.
Adopt reversed V-shape stuffing seal 8 between valve rod 4 and the valve gap 7, make valve gap 7 under high pressure conditions, this reversed V-shape stuffing seal 8 is more pressed tighter under pressure, realizes high-pressure self-tightening sealing.
Claims (4)
1. High Temperature High Pressure major diameter solid forging wedge action valve, comprise valve body (1), valve seat (2), flashboard (3), valve rod (4), valve gap (7), support, driving mechanism (9), Sealing and assembling set, flashboard (3) is wedge-shaped structure, valve seat (2) has the wedge-type seal face that cooperatively interacts with flashboard (3), and valve body (1) is shaped with inlet passage, outlet passage and Zhong Dao; It is characterized in that valve body (1) is forging, valve body (1) inlet passage, outlet passage and middle road are overall structure; Middle road adopts the pressure self-sealing structure, this pressure self-sealing structure is comprised of valve gap (7), seal ring (5), snap ring, valve gap (7) lower end surface is fitted on the step in road in the valve body (1), valve gap (7) is shaped with outer conical surface, seal ring (5) is shaped with the internal conical surface that cooperatively interacts with valve gap (7) outer conical surface, and seal ring (5) upper-end surface is fitted between valve body (1) and the valve gap (7) by snap ring.
2. High Temperature High Pressure major diameter solid forging wedge action valve according to claim 1, it is characterized in that seal ring (5) adopts stainless steel material, difference pile-up welding hard alloy material between seal ring (5) and valve gap (7) and valve body (1) surface of contact.
3. High Temperature High Pressure major diameter solid forging wedge action valve according to claim 1 and 2, it is characterized in that being shaped with in the middle of valve gap (7) lower end surface sealing surface (6), sealing surface this on (6) and flashboard (3) the upper-end surface formation sealing pair that cooperatively interacts.
4. High Temperature High Pressure major diameter solid forging wedge action valve according to claim 1 and 2 is characterized in that adopting between valve rod (4) and the valve gap (7) reversed V-shape stuffing seal (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220337514 CN202646749U (en) | 2012-07-09 | 2012-07-09 | High-temperature high-pressure large-diameter overall forging wedged gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220337514 CN202646749U (en) | 2012-07-09 | 2012-07-09 | High-temperature high-pressure large-diameter overall forging wedged gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202646749U true CN202646749U (en) | 2013-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220337514 Expired - Fee Related CN202646749U (en) | 2012-07-09 | 2012-07-09 | High-temperature high-pressure large-diameter overall forging wedged gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202646749U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899780A (en) * | 2014-03-05 | 2014-07-02 | 大丰市奥凯流体机械有限公司 | Pressure self-sealing sluice valve |
| CN105351549A (en) * | 2015-10-26 | 2016-02-24 | 无锡市圣科不锈钢气动自控阀门厂 | Novel stainless steel control 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 |
| CN107269865A (en) * | 2016-04-06 | 2017-10-20 | 上海电站阀门厂有限公司 | A kind of full forging electric gate valve |
-
2012
- 2012-07-09 CN CN 201220337514 patent/CN202646749U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899780A (en) * | 2014-03-05 | 2014-07-02 | 大丰市奥凯流体机械有限公司 | Pressure self-sealing sluice 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 |
| CN105351549A (en) * | 2015-10-26 | 2016-02-24 | 无锡市圣科不锈钢气动自控阀门厂 | Novel stainless steel control valve |
| CN107269865A (en) * | 2016-04-06 | 2017-10-20 | 上海电站阀门厂有限公司 | A kind of full forging electric gate valve |
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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 |
Granted publication date: 20130102 Termination date: 20160709 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |