CN102182835A - Low-temperature stop valve - Google Patents
Low-temperature stop valve Download PDFInfo
- Publication number
- CN102182835A CN102182835A CN 201110032605 CN201110032605A CN102182835A CN 102182835 A CN102182835 A CN 102182835A CN 201110032605 CN201110032605 CN 201110032605 CN 201110032605 A CN201110032605 A CN 201110032605A CN 102182835 A CN102182835 A CN 102182835A
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- valve
- seal ring
- valve rod
- valve gap
- hole
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Abstract
The invention discloses a low-temperature stop valve, which comprises a valve body, a valve cover assembly, a valve clack, a valve rod and an adjusting hand wheel, wherein the valve cover assembly is arranged on the valve body; the valve clack is arranged inside the valve body; a sealing ring is arranged on the valve clack; the valve rod is arranged inside the valve cover assembly; one end of the valve rod is connected with the valve clack and the other end of the valve rod is connected with the adjusting hand wheel; a sealing lug boss is formed on the valve clack; a mounting groove is formed on the adjusting hand wheel; and a nameplate, and a bushing and a spring for fixing the nameplate are arranged inside the mounting groove. Because the sealing lug boss is formed on the valve clack of the stop valve, once an inner sealing ring on the valve clack is molten at high temperature, the valve is closed through the sealing lug boss, medium diffusion inside a pipeline can be effectively prevented, and the danger is avoided.
Description
Technical field
The present invention relates to a kind of cryogenic globe valve.
Background technique
Cryogenic globe valve is applied to liquid oxygen, and liquid argon on the low-temperature pressure containers such as the warehousing and transportation facilities of liquefied gas at low temp such as liquid nitrogen and LNG Liquefied natural gas such as basin, tank car, tank container, is used to control opening or closing of low-temperature pressure container pipeline.Common cryogenic globe valve flap has only one soft seal, in case the Sealing of meeting on the fiery flap very easily melts away, valve is difficult to close, thereby causes the cryogenic liquide that loads to be revealed, even causes accident to take place.
Summary of the invention
Technical problem to be solved by this invention is: a kind of cryogenic globe valve with hard sealing fire resisting construction is provided.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of cryogenic globe valve, comprise valve body, the valve gap assembly, flap, valve rod, adjusting handle, valve body is the T font, the valve body both sides are respectively arranged with admission chamber and go out sap cavity, the valve body middle part is provided with mounting hole, mounting hole and admission chamber and go out sap cavity and connect, the valve gap assembly comprises: valve gap, pad, last seal ring and last seal ring gland, valve gap one end is arranged in the mounting hole of valve body, be provided with stair-stepping valve gap through hole in the valve gap, end near adjusting handle on the valve gap through hole is provided with installation step, last seal ring is arranged on the installation step, last seal ring gland is arranged on the seal ring, pad is arranged between adjusting handle and the last seal ring gland, the other end of valve gap through hole is provided with screw thread, flap is threaded in the valve gap through hole by an end setting, this end inside of flap is provided with the valve rod mounting hole, valve rod one end is arranged in the valve rod mounting hole, the valve rod middle part is located in the valve gap assembly, adjusting handle is set in the other end of valve rod, valve body admission chamber outlet port is provided with sealing surface, flap is provided with the inner seal ring that matches with sealing surface near admission chamber portion, and described flap is provided with seal boss behind the inner seal ring of liquid feeding end.
The middle part of valve gap through hole is provided with the sealed step face, and valve rod is provided with the middle seal ring that is the L type with the corresponding cross section of sealed step face.
Described adjusting handle is provided with mounting groove, be provided with spring in the mounting groove, the top of spring is provided with nameplate, and the valve rod end in the mounting groove is arranged with lining, the lining top is provided with the fixedly step that is used to compress nameplate, and the valve rod end also is provided with the gland nut that is used to compress lining.
Advantage of the present invention is: owing to be provided with seal boss on the stop valve flap, in a single day the seal ring on the flap melts away under the condition of high temperature, can make valve closing by seal boss, can effectively stop the Medium Diffusion in the pipeline, avoids dangerous generation.
Description of drawings
Fig. 1 looks schematic representation for master of the present invention.
Among the figure: 1. valve body, 11. admission chambers, 12. go out sap cavity, 13. mounting holes, 14. sealing surfaces, 2. seal ring gland on the seal ring, 24. on valve gap assembly, 21. valve gaps, 211. valve gap through holes, 212. installation steps, 213. sealed step faces, 22. pads, 23., 3. flap, 31. valve rod mounting holes, 32. seal bosses, 4. inner seal ring, 5. seal ring in the valve rod, 51., 6. adjusting handle, 61. mounting grooves, 7. nameplate, 8. lining.
Embodiment
Describe particular content of the present invention in detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, a kind of cryogenic globe valve, comprise valve body 1, valve gap assembly 2, flap 3, valve rod 5, adjusting handle 6, valve body 1 is the T font, valve body 1 both sides are respectively arranged with admission chamber 11 and go out sap cavity 12, valve body 1 middle part is provided with mounting hole 13, mounting hole 13 is with admission chamber 11 and go out sap cavity 12 and connect, valve gap assembly 2 comprises: valve gap 21, pad 22, last seal ring 23 and last seal ring gland 24, valve gap 21 1 ends are arranged in the mounting hole 13 of valve body 1, be provided with stair-stepping valve gap through hole 211 in the valve gap 21, end near adjusting handle 6 on the valve gap through hole 211 is provided with installation step 212, last seal ring 23 is arranged on the installation step 212, last seal ring gland 24 is arranged on the seal ring 23, pad 22 is arranged between adjusting handle 6 and the last seal ring gland 24, the other end of valve gap through hole 211 is provided with screw thread, flap 3 is threaded in the valve gap through hole 211 by an end setting, flap 3 these end inside are provided with valve rod mounting hole 31, valve rod 5 one ends are arranged in the valve rod mounting hole 31, valve rod 5 middle parts are located in the valve gap assembly 2, adjusting handle 6 is set in the other end of valve rod 5, valve body 1 admission chamber 11 outlet ports are provided with sealing surface, flap 3 is provided with the inner seal ring 4 that matches with sealing surface near 11 ones of admission chambers, and described flap 3 is provided with seal boss 32 behind the inner seal ring 4 of liquid feeding end.
The middle part of valve gap through hole 211 is provided with sealed step face 213, and valve rod 5 is provided with the middle seal ring 51 that is the L type with sealed step face 213 corresponding cross sections.
Described adjusting handle 6 is provided with mounting groove 61, be provided with the spring (not shown) in the mounting groove 61, the top of spring is provided with nameplate 7, valve rod 5 ends in the mounting groove 61 are arranged with lining 8, lining 8 tops are provided with the fixedly step that is used to compress nameplate 7, and valve rod 5 ends also are provided with the gland nut that is used to compress lining 8.
Owing to be provided with seal boss 32 on stop valve flap 3, in a single day the inner seal ring 4 on the flap 3 melts away under the condition of high temperature, can make valve closing by seal boss 32, can effectively stop the Medium Diffusion in the pipeline, avoids dangerous generation.
Claims (3)
1. cryogenic globe valve, comprise valve body, the valve gap assembly, flap, valve rod, adjusting handle, valve body is the T font, the valve body both sides are respectively arranged with admission chamber and go out sap cavity, the valve body middle part is provided with mounting hole, mounting hole and admission chamber and go out sap cavity and connect, the valve gap assembly comprises: valve gap, pad, last seal ring and last seal ring gland, valve gap one end is arranged in the mounting hole of valve body, be provided with stair-stepping valve gap through hole in the valve gap, end near adjusting handle on the valve gap through hole is provided with installation step, last seal ring is arranged on the installation step, last seal ring gland is arranged on the seal ring, pad is arranged between adjusting handle and the last seal ring gland, the other end of valve gap through hole is provided with screw thread, flap is threaded in the valve gap through hole by an end setting, this end inside of flap is provided with the valve rod mounting hole, valve rod one end is arranged in the valve rod mounting hole, the valve rod middle part is located in the valve gap assembly, adjusting handle is set in the other end of valve rod, valve body admission chamber outlet port is provided with sealing surface, flap is provided with the inner seal ring that matches with sealing surface near admission chamber portion, and it is characterized in that: described flap is provided with seal boss behind the inner seal ring of liquid feeding end.
2. cryogenic globe valve as claimed in claim 1 is characterized in that: the middle part of valve gap through hole is provided with the sealed step face, and valve rod is provided with the middle seal ring that is the L type with the corresponding cross section of sealed step face.
3. cryogenic globe valve as claimed in claim 2, it is characterized in that: described adjusting handle is provided with mounting groove, be provided with spring in the mounting groove, the top of spring is provided with nameplate, valve rod end in the mounting groove is arranged with lining, the lining top is provided with the fixedly step that is used to compress nameplate, and the valve rod end also is provided with the gland nut that is used to compress lining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100326055A CN102182835B (en) | 2011-01-30 | 2011-01-30 | Low-temperature stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100326055A CN102182835B (en) | 2011-01-30 | 2011-01-30 | Low-temperature stop valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102182835A true CN102182835A (en) | 2011-09-14 |
| CN102182835B CN102182835B (en) | 2012-07-04 |
Family
ID=44569098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100326055A Active CN102182835B (en) | 2011-01-30 | 2011-01-30 | Low-temperature stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102182835B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110701313A (en) * | 2019-10-16 | 2020-01-17 | 安徽鑫宏机械有限公司 | Acid-resistant high-strength stop valve |
| CN112524289A (en) * | 2020-11-23 | 2021-03-19 | 欧阳国法 | Highly integrated low-temperature stop valve with one-way function |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104676096A (en) * | 2015-03-10 | 2015-06-03 | 宁波金佳佳阀门有限公司 | Liquefied dimethyl ether cylinder valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4832311A (en) * | 1988-05-20 | 1989-05-23 | Kimura Kohki Kabushiki Kaisha | Valve apparatus |
| CN2054119U (en) * | 1989-08-29 | 1990-03-07 | 顾一呜 | Water tap unable to open at zero-pressure |
| CN2086828U (en) * | 1990-05-15 | 1991-10-16 | 李辉 | Valve without padding |
| CN2694062Y (en) * | 2004-04-30 | 2005-04-20 | 张宗元 | Flow regulating valve |
| EP1456568B1 (en) * | 2001-11-22 | 2007-04-18 | Tour & Andersson AB | Valve, particularly balancing valve for central heating plants |
| CN201934678U (en) * | 2011-01-30 | 2011-08-17 | 张家港富瑞特种装备股份有限公司 | Low-temperature shutoff valve |
-
2011
- 2011-01-30 CN CN2011100326055A patent/CN102182835B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4832311A (en) * | 1988-05-20 | 1989-05-23 | Kimura Kohki Kabushiki Kaisha | Valve apparatus |
| CN2054119U (en) * | 1989-08-29 | 1990-03-07 | 顾一呜 | Water tap unable to open at zero-pressure |
| CN2086828U (en) * | 1990-05-15 | 1991-10-16 | 李辉 | Valve without padding |
| EP1456568B1 (en) * | 2001-11-22 | 2007-04-18 | Tour & Andersson AB | Valve, particularly balancing valve for central heating plants |
| CN2694062Y (en) * | 2004-04-30 | 2005-04-20 | 张宗元 | Flow regulating valve |
| CN201934678U (en) * | 2011-01-30 | 2011-08-17 | 张家港富瑞特种装备股份有限公司 | Low-temperature shutoff valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110701313A (en) * | 2019-10-16 | 2020-01-17 | 安徽鑫宏机械有限公司 | Acid-resistant high-strength stop valve |
| CN112524289A (en) * | 2020-11-23 | 2021-03-19 | 欧阳国法 | Highly integrated low-temperature stop valve with one-way function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102182835B (en) | 2012-07-04 |
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| C14 | Grant of patent or utility model | ||
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