CN220540315U - Cryogenic control valve with cold box structure - Google Patents
Cryogenic control valve with cold box structure Download PDFInfo
- Publication number
- CN220540315U CN220540315U CN202320715480.4U CN202320715480U CN220540315U CN 220540315 U CN220540315 U CN 220540315U CN 202320715480 U CN202320715480 U CN 202320715480U CN 220540315 U CN220540315 U CN 220540315U
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- China
- Prior art keywords
- cold box
- cold
- valve
- packing
- box
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 238000012856 packing Methods 0.000 claims description 27
- 210000004907 gland Anatomy 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims 2
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model relates to the technical field of regulating valves, in particular to a low-temperature cryogenic regulating valve with a cold box structure. A low-temperature cryogenic regulating valve with a cold box structure comprises a valve cover, wherein a cold box is arranged in the valve cover, cold liquid is arranged at the lower part in the cold box, and vapor pressure is arranged at the upper part in the cold box. Compared with the prior art, the cold box is arranged in the valve cover, a certain vapor pressure is formed at the upper part of the cold box, so that a cold medium is prevented from contacting a stuffing box area, and the valve rod is kept at a certain temperature.
Description
Technical Field
The utility model relates to the technical field of regulating valves, in particular to a low-temperature cryogenic regulating valve with a cold box structure.
Background
The traditional low-temperature regulating valve is applied to a low-temperature cryogenic environment, at the moment, under the contact of a cold medium, the stuffing box part and the surface of the valve rod are easy to form crystals, and the valve rod and the stuffing are easy to scratch in the movement process of the valve rod, so that the problems of shaking, leakage and the like are generated.
Disclosure of Invention
The utility model provides a low-temperature cryogenic regulating valve with a cold box structure, which aims to overcome the defects of the prior art.
In order to achieve the above purpose, the low-temperature cryogenic regulating valve with the cold box structure comprises a valve cover, wherein a cold box is arranged in the valve cover, cold liquid is arranged at the lower part in the cold box, and vapor pressure is arranged at the upper part in the cold box.
The cold box and the valve cover are fixed through welding.
The valve cover is internally provided with a valve rod which penetrates through the upper end and the lower end of the cold box.
The valve cover is internally provided with a stuffing box, and the cold box is positioned at the lower part of the stuffing box.
The packing box is internally provided with packing, the upper end of the packing is provided with a packing gland, and the upper end of the packing gland is connected with a packing pressing plate.
The middle part outside cover of packing is equipped with the bush, and the lower part outside cover of packing is equipped with the guide pin bushing.
Compared with the prior art, the valve cover is internally provided with the cold box, and a certain vapor pressure is formed at the upper part of the cold box, so that a cold medium is prevented from contacting a stuffing box area, and the valve rod is kept at a certain temperature.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Referring to fig. 1, wherein 1 is a valve cover, 2 is a cold box, 3 is cold liquid, 4 is steam, 5 is a valve stem, 6 is a stuffing box, 7 is a stuffing gland, 8 is a stuffing pressure plate, 9 is a valve body, 10 is a bushing, and 11 is a guide sleeve.
Description of the embodiments
The utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1, a cold box 2 is arranged in a valve cover 1, cold liquid 3 is arranged at the lower part in the cold box 2, and vapor pressure 4 is arranged at the upper part in the cold box 2.
The cold box 2 is connected with the valve cover 1 through bolts, and the cold box 2 is fixed inside the valve cover 1.
A valve rod 5 is arranged in the valve cover 1 and penetrates through the upper end and the lower end of the cold box. The valve cover 1 is internally provided with a stuffing box, and the cold box 2 is positioned at the lower part of the stuffing box.
The packing box is internally provided with packing 6, the upper end of the packing 6 is provided with a packing gland 7, the upper end of the packing gland 7 is connected with a packing pressing plate 8, the packing gland 7 is matched with the packing pressing plate 8, the packing 6 is pressed inside the packing box, and the tightness of the valve cover 1 is ensured. The middle part outside of the packing 6 is sleeved with a lining 10, and the lower part outside of the packing 6 is sleeved with a guide sleeve 11, so that the packing is sealed.
When the utility model is used, the cold liquid 3 is arranged at the lower part in the cold box 2, and partial cold liquid 3 in the cold box is evaporated due to the heat exchange between the outer wall of the cold box 2 and the external atmosphere, so that a certain vapor pressure is formed at the upper part of the cold box 2, a cold medium is prevented from contacting a stuffing box area, a valve rod 5 is kept at a certain temperature, the valve rod 5 and the stuffing box are protected, and the problems of shaking, leakage and the like caused by the pull of the valve rod 5 are avoided.
Claims (6)
1. The utility model provides a take cryogenic regulating valve of cold box structure, includes valve gap, its characterized in that: the valve cover (1) is internally provided with a cold box (2), the lower part in the cold box (2) is provided with cold liquid (3), and the upper part in the cold box (2) is provided with vapor pressure (4).
2. The cryogenic regulating valve with a cold box structure according to claim 1, wherein: the cold box (2) is fixed with the valve cover (1) through welding.
3. The cryogenic regulating valve with a cold box structure according to claim 1, wherein: a valve rod (5) is arranged in the valve cover (1), and the valve rod (5) penetrates through the upper end and the lower end of the cold box (2).
4. The cryogenic regulating valve with a cold box structure according to claim 1, wherein: the valve cover (1) is internally provided with a stuffing box, and the cold box (2) is positioned at the lower part of the stuffing box.
5. The cryogenic regulating valve with cold box structure according to claim 4, wherein: the packing box is internally provided with packing (6), the upper end of the packing (6) is provided with a packing gland (7), and the upper end of the packing gland (7) is connected with a packing pressing plate (8).
6. The cryogenic regulating valve with a cold box structure according to claim 5, wherein: the middle outer side of the filler (6) is sleeved with a bushing (10), and the lower outer side of the filler (6) is sleeved with a guide sleeve (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320715480.4U CN220540315U (en) | 2023-04-04 | 2023-04-04 | Cryogenic control valve with cold box structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320715480.4U CN220540315U (en) | 2023-04-04 | 2023-04-04 | Cryogenic control valve with cold box structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220540315U true CN220540315U (en) | 2024-02-27 |
Family
ID=89967958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320715480.4U Active CN220540315U (en) | 2023-04-04 | 2023-04-04 | Cryogenic control valve with cold box structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220540315U (en) |
-
2023
- 2023-04-04 CN CN202320715480.4U patent/CN220540315U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |