CN202418666U - Large-caliber pneumatic gate valve for high-temperature hydrogen - Google Patents
Large-caliber pneumatic gate valve for high-temperature hydrogen Download PDFInfo
- Publication number
- CN202418666U CN202418666U CN201120558259XU CN201120558259U CN202418666U CN 202418666 U CN202418666 U CN 202418666U CN 201120558259X U CN201120558259X U CN 201120558259XU CN 201120558259 U CN201120558259 U CN 201120558259U CN 202418666 U CN202418666 U CN 202418666U
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- China
- Prior art keywords
- valve
- valve body
- gate valve
- flashboard
- pneumatic gate
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Abstract
The utility model discloses a large-caliber pneumatic gate valve for high-temperature hydrogen. The large-caliber pneumatic gate valve comprises a valve body, a gate plate, a valve rod and a valve cover, wherein a middle opening for flange connection between the valve body and the valve cover is of a tongue-and-groove structure, and a winding pad is arranged in a tongue groove on the upper end surface of the valve body; the gate plate comprises a left-right assembly; and a groove is machined at the combined surface of the periphery of the assembly. The large-caliber pneumatic gate valve disclosed by the utility model has the advantages that by improvement on the traditional hydrogenation gate valve, when the working temperature for production is 550 DEG C, the nominal size is DN800 and the air-sealing test pressure is up to 1.1 times the designed pressure, so that the purpose for realizing the zero-leakage hydrogenation gate valve is achieved.
Description
Technical field
The utility model belongs to the mechanical valve class, and being specifically related to operating temperature is the heavy caliber Pneumatic gate valve that 550 ℃ of high-temperature hydrogen devices use.
Background technique
High-temperature hydrogen is a kind of inflammable, explosive, be prone to leak and porous to metallic material inside and under normal temperature or high temperature, cause the medium of material embrittlement sex change.As: when temperature is at 550 ℃ in facing the hydrogen operation; The part decomposition takes place and becomes atomic hydrogen or ionic hydrogen in carbon in the steel and the molecular hydrogen in the hydrogen; And in steel, spread through metal lattice and crystal boundary; Hydrogen and the unsettled carbide generation chemical reaction in the steel invaded in diffusion, generates the methane bubble, i.e. Fe
3C+2H
2→ CH
4+ Fe causes metallic material embrittlement and inside and outside decarburization.Owing to this reason, in the existing technology, domestic bigbore can under high temperature condition, work do not arranged and reach zero leakage face the hydrogen gate valve.
The model utility content
It is 550 ℃ that the purpose of the utility model is to provide a kind of operating temperature, and nominal size is DN800, and when the hermetic seal test pressure reached 1.1 times of design pressure, what reach zero leakage faced the hydrogen gate valve.
For realizing above-mentioned purpose, the technological scheme that is adopted is: a kind of heavy-caliber high-temperature hydrogen is used Pneumatic gate valve, comprises valve body, flashboard, valve rod, valve gap.Middle mouthful that said valve body is connected with bonnet flange is adopted tenon groove structure, and wound gasket places the tongue-and-groove on the said valve body upper-end surface; Said flashboard is a left and right sides assembly parts, and the junction plane place of this assembly parts periphery is processed with groove.
More excellent is: said valve body lumen is provided with grid reinforcing rib.
More excellent is: on valve gap, be provided with the upper and lower blow down valve that leads to high-temperature vapour with the valve body bottom.
The utility model has realized that through to existing improvement of facing the hydrogen gate valve production work temperature is 550 ℃, and nominal size is DN800, and the hermetic seal test pressure reaches the purpose of facing the hydrogen gate valve of zero leakage when reaching 1.1 times of design pressure.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the I place enlarged diagram among Fig. 1;
Fig. 3 is the II place enlarged diagram among Fig. 1.
Embodiment
Below in conjunction with accompanying drawing the utility model and beneficial effect thereof are done further detailed explanation.
Referring to figs. 1 to Fig. 3, a kind of heavy-caliber high-temperature hydrogen is used Pneumatic gate valve
,Comprise valve body 1, flashboard 2, valve rod 3, valve gap 5, support 10 and driving mechanism 9; Valve rod 3 upper ends connect driving mechanism 9, the bottom connects flashboard 2; When opening and closing, the elevating movement of flashboard 2 is by driving mechanism 9 controls that are contained on the support 10, and valve rod 3 upper ends are connected with flashboard 2 through T-slot; Up-down through valve rod 3 makes flashboard 2 in valve body, produce relative movement, makes opening of valves or closes.Middle mouthful that said valve body 1 is connected with valve gap 5 flanges is adopted tenon groove structure, and wound gasket 4 places the tongue-and-groove on said valve body 1 upper-end surface; Said flashboard 2 is a left and right sides assembly parts, and the junction plane place of this assembly parts periphery is processed with groove 13.Adopting spirotallic gasket 4 is because of its good springiness, and rebound degree is high, assurance sealing more easily under the situation that guarantees stability.Spirotallic gasket 4 is placed in the tongue-and-groove that valve gap and valve body join, can guarantee the stability (promptly can not make the pad unstability) of spirotallic gasket 4, increased the resistance of dielectric leakage simultaneously again because of bigger seal pressure.Because the junction plane place of flashboard 2 left and right sides assembly parts peripheries is processed with groove 13, can produce micro-deformation, makes flashboard 2 have suitable elasticity.To improve its manufacturability, remedy the deviation that the sealing surface angle produces in course of working.Overcome the dead phenomenon of general Gate-valve sealing flashboard wedge.
Said valve body 1 lumen is provided with grid reinforcing rib 11, can prevent the distortion of heavy caliber valve when suppressing, and has guaranteed the zero leakage of hydrogen device.
On valve gap, be provided with the upper and lower blow down valve 14,12 that leads to high-temperature vapour with the valve body bottom.Blow down valve 14 has purged flashboard sealing surface outlet port on when valve opening; Pile up to guarantee flashboard sealing surface place free from admixture; Assurance sealing, following blow down valve 12 are located impurity with valve body bottom " recess " and are purged totally, and the assurance flashboard when cutting out and puts in place; Guarantee the reliability of sealing, prolonged the working life of valve.
Said valve gap 5, valve body 1 and flashboard 2 have been selected high temperature resistant, corrosion resistant Cr-Mo steel material for use; Sealing surface weld deposit cobalt base hard alloy material between valve body 1 and the flashboard 2.And casting is adopted the electric arc furnaces refining with steel, and the cast moulding and the core of foundry goods are used furan resin-sand, have controlled carbon equivalent.Heat treating castings has adopted the heating that burns gas; Through this measure, solve the erosion corrosion problem, and improved the wear-resisting property of valve, prolong valve working life.
Evidence; The given prominence to the key points distinguishing products of Lan Gaofa of the utility model: " three high one low one is big "; In " high temperature, high alloy and heavy caliber gate valve "; Solve the domestic situation that hydrogen production device lacks high temperature (550 ℃) and big nominal size (DN800) of facing, substituted import, filled up the blank of domestic this technology and product.
Claims (4)
1. a heavy-caliber high-temperature hydrogen is used Pneumatic gate valve; Comprise valve body (1), flashboard (2), valve gap (5); It is characterized in that: middle mouthful that said valve body (1) is connected with valve gap (5) flange is adopted tenon groove structure, and wound gasket (4) places the tongue-and-groove on said valve body (1) upper-end surface; Said flashboard (2) is a left and right sides assembly parts, and the junction plane place of this assembly parts periphery is processed with groove (13).
2. a kind of heavy-caliber high-temperature hydrogen according to claim 1 is used Pneumatic gate valve, it is characterized in that: said valve body (1) lumen is provided with grid reinforcing rib (11).
3. a kind of heavy-caliber high-temperature hydrogen according to claim 1 is used Pneumatic gate valve, it is characterized in that: bottom last at valve gap (5) and valve body (1) is provided with the upper and lower blow down valve (14,12) of logical high-temperature vapour.
4. use Pneumatic gate valve according to any heavy-caliber high-temperature hydrogen described in the claim 1 to 3, it is characterized in that: said valve gap (5), valve body (1) and flashboard (2) have been selected high temperature resistant, corrosion resistant Cr-Mo steel material for use; Sealing surface weld deposit cobalt base hard alloy material between valve body (1) and the flashboard (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120558259XU CN202418666U (en) | 2011-12-28 | 2011-12-28 | Large-caliber pneumatic gate valve for high-temperature hydrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120558259XU CN202418666U (en) | 2011-12-28 | 2011-12-28 | Large-caliber pneumatic gate valve for high-temperature hydrogen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202418666U true CN202418666U (en) | 2012-09-05 |
Family
ID=46743436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120558259XU Expired - Fee Related CN202418666U (en) | 2011-12-28 | 2011-12-28 | Large-caliber pneumatic gate valve for high-temperature hydrogen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202418666U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865379A (en) * | 2012-09-12 | 2013-01-09 | 浙江盾安阀门有限公司 | Gate valve |
| CN103016766A (en) * | 2012-12-28 | 2013-04-03 | 兰州高压阀门有限公司 | Special valve for carbonyl metallurgy technology |
| CN103075531A (en) * | 2012-12-27 | 2013-05-01 | 安徽铜陵科力阀门有限责任公司 | Gate valve exhaust combined valve |
-
2011
- 2011-12-28 CN CN201120558259XU patent/CN202418666U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865379A (en) * | 2012-09-12 | 2013-01-09 | 浙江盾安阀门有限公司 | Gate valve |
| CN103075531A (en) * | 2012-12-27 | 2013-05-01 | 安徽铜陵科力阀门有限责任公司 | Gate valve exhaust combined valve |
| CN103016766A (en) * | 2012-12-28 | 2013-04-03 | 兰州高压阀门有限公司 | Special valve for carbonyl metallurgy technology |
| CN103016766B (en) * | 2012-12-28 | 2016-04-27 | 兰州高压阀门有限公司 | Special valve for carbonyl metallurgy technology |
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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: 20120905 Termination date: 20171228 |