CN211315226U - Multichannel vacuum insulation formula low temperature valve - Google Patents
Multichannel vacuum insulation formula low temperature valve Download PDFInfo
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- CN211315226U CN211315226U CN201922448505.5U CN201922448505U CN211315226U CN 211315226 U CN211315226 U CN 211315226U CN 201922448505 U CN201922448505 U CN 201922448505U CN 211315226 U CN211315226 U CN 211315226U
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Abstract
The utility model discloses a multichannel vacuum heat preservation type low-temperature valve, which belongs to the technical field of low-temperature valves and comprises a valve body internally provided with a plurality of liquid separating channels annularly distributed around a valve core, an inner neck pipe is arranged above the valve body, a valve rod is rotatably arranged in the inner neck pipe, the top end of the valve rod is fixedly connected with an operating mechanism for controlling the rotation of the valve rod, the bottom end of the valve rod is connected with the valve core, the valve core is arranged in the valve body, an L-shaped channel is arranged in the valve core, one end of the L-shaped channel is downwards communicated with a liquid inlet channel, the other end of the L-shaped channel is communicated with a liquid outlet channel, one end of the liquid inlet channel and one end of the liquid outlet channel, which are close to the valve body, are upwards communicated with the liquid separating channels in the valve body in a one-to-one correspondence manner, through arranging a plurality, the problem of when the valve is closed, partial liquid remains in the valve body is solved.
Description
Technical Field
The utility model belongs to the technical field of the low temperature valve, concretely relates to multichannel vacuum insulation formula low temperature valve.
Background
In vacuum experiment or production, liquid cryogenic gas such as liquid nitrogen often need be used, in order to supply liquid to a plurality of equipment, need use the multichannel valve, and current cryogenic valve mainly is the single channel design, can only provide and open or close two kinds of states for need switch a plurality of valves when supplying liquid for a plurality of equipment, greatly increased lay cost and space occupy, it is extremely inconvenient.
At present, after a valve used in the industry is closed, liquid is remained in the valve body, and the liquid remained in the valve cavity gradually absorbs heat in the atmosphere along with the lapse of time, rises to the normal temperature and is gasified again, and the volume of the gasified liquid expands rapidly, so that the valve body is damaged, and the service life of the valve body is shortened.
Disclosure of Invention
An object of the utility model is to provide a multichannel vacuum insulation formula low temperature valve that many liquid outlet channels, vacuum insulation just can reduce liquid to be detained.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a multichannel vacuum insulation formula low temperature valve, includes the valve body and installs the case in the valve body, and the inside division liquid passageway that has many to encircle the case and distribute of opening of valve body, the top of valve body is equipped with interior neck, the rotatable valve rod of installing in the interior neck, the top fixedly connected with of valve rod is used for controlling valve rod pivoted operating device, and the bottom and the case of valve rod are connected, open the one end that has L shape passageway and L shape passageway in the valve core and communicate with feed liquor channel downwards, the other end and arbitrary one divide liquid channel intercommunication, and every divides liquid channel all to be connected with liquid channel.
Furthermore, an outer pipe is sleeved on the multi-channel vacuum heat-preservation type low-temperature valve, a plurality of layers of heat-insulating materials are filled between the outer pipe and the inner neck pipe, and one ends, far away from the valve body, of the outer pipe and the inner neck pipe are connected with each other to seal a cavity between the outer pipe and the inner neck pipe.
Further, the operating mechanism is a servo motor.
Furthermore, an angle sensor is coaxially arranged between the valve rod and the servo motor.
Compared with the prior art, the utility model has the advantages that the plurality of liquid separating channels annularly distributed around the valve core are arranged in the valve, so that the effect of leading the liquid in the main pipeline into the plurality of liquid outlet channels in a controllable manner is achieved; meanwhile, by arranging the outer pipe, arranging a plurality of layers of heat insulating materials between the outer pipe and the pipeline and pumping the heat insulating materials into a vacuum environment, heat transfer of low-temperature liquid can be greatly reduced in the processes of flowing in and flowing out, and the effect of reducing vaporization of the low-temperature liquid is achieved; through vertical installation inlet channel and liquid outlet channel, the problem that partial liquid remains in the valve body when the valve is closed is solved, and therefore the effect of greatly prolonging the service life of the valve is achieved.
Drawings
Fig. 1 is a schematic view of the longitudinal section structure of the present invention.
The labels in the figure are: 100-valve body, 101-liquid separation channel, 110-inner neck tube, 120-valve core, 121-L-shaped channel, 130-liquid inlet channel, 140-liquid outlet channel, 200-valve rod, 300-multilayer heat insulation material, 400-servo motor, 410-angle sensor and 500-outer tube.
Detailed Description
As shown in fig. 1, the embodiment provides a multi-channel vacuum insulation type cryogenic valve, which comprises a valve body 100, a liquid separation channel 101, an inner neck pipe 110, a valve core 120, an L-shaped channel 121, a liquid inlet channel 130, a liquid outlet channel 140, a valve rod 200, a multi-layer heat insulating material 300, a servo motor 400, an angle sensor 410, and an outer pipe 500.
A valve core 120 is rotatably installed in the valve body 100, four liquid distribution channels 101 distributed annularly around the valve core 120 are formed in the valve body 100, an L-shaped channel 121 is formed in the valve core 120, one end of the L-shaped channel 121 is downward communicated with a liquid inlet channel 130, the other end of the L-shaped channel 121 is communicated with any one of the liquid distribution channels 101, one end of each liquid distribution channel 101 faces the valve core 120, the valve core 120 can be communicated with the liquid distribution channel 101 when rotating to a corresponding angle, gaps are sealed between the valve core 120 and the liquid distribution channels 101 through polytetrafluoroethylene gaskets or other existing materials, each liquid distribution channel 101 is connected with a liquid outlet channel 140, one end, close to the valve body 100, of each liquid outlet channel 140 is vertically communicated with the liquid distribution channel 101 in the valve body 100, the liquid inlet channel 130 and the corresponding liquid outlet channel 140 can be communicated when the L-shaped channel 121 is communicated with any one of the liquid distribution channels 101, the valve core 120 is provided with a valve rod 200, the top end of the valve rod 200 is fixedly connected with an operating mechanism for controlling the valve rod to rotate, the operating mechanism is a servo motor 400 or other automatic elements capable of realizing an automatic control function, an angle sensor 410 is coaxially arranged between the valve rod 200 and the servo motor 400, and the bottom end of the valve rod 200 is connected with the valve core 120.
The valve body 100, the valve core 120, the valve rod 200, the inner neck pipe 110, the liquid inlet channel 130 and the liquid outlet channel 140 form a whole low-temperature valve body, the low-temperature valve body is further sleeved with an outer pipe 500, a plurality of layers of heat insulating materials 300 are filled between the outer pipe 500 and the low-temperature valve body, the plurality of layers of heat insulating materials 300 can adopt the existing heat insulating materials (such as polyethylene foam plastics or polyurethane foam plastics and the like), one ends of the outer pipe 500 and the inner neck pipe 110, which are far away from the valve body 100, are connected with each other to seal a cavity between the outer pipe 500 and the low-temperature valve body, the cavity between the outer pipe 500 and the low-temperature valve body is pumped into a vacuum environment through a vacuum pump (not shown in the figure) when in use, one end of the outer pipe 500, which is far away from the inner neck pipe 110, is divided into a plurality of branch pipes and is connected with a low-temperature, providing the condition of vacuumizing.
The utility model discloses specific operating condition is as follows:
as shown in fig. 1, the installation of the present invention requires that on the pipeline for conveying cryogenic liquid to different devices, the liquid inlet channel 130 communicates with the liquid outlet of the cryogenic liquid supply device, the liquid outlet channel 140 communicates with the liquid inlet of the corresponding cryogenic liquid receiving device, and the outer tube 500 also divides into the branch tubes with the same number as the liquid outlet channel 140 and the liquid inlet channel 130 and connects to the corresponding cryogenic liquid supply device and the outer wall of the receiving device, so that a completely closed cavity with multiple branches is formed between the outer tube 500 and the cryogenic valve body, the cavity is evacuated before the use of the present invention, after the cryogenic liquid is introduced into the liquid inlet channel 130, the cryogenic liquid flows into the corresponding liquid outlet channel 101 through the L-shaped channel 121, and finally flows into the corresponding liquid outlet channel 140, when the flow direction of the cryogenic liquid needs to be changed, only the operating mechanism needs to control the valve rod 200 to rotate, the end of the L-shaped channel 121 far from the liquid inlet channel 130 is communicated with other liquid distribution channels 101, so that the effect of changing the flow direction of the low-temperature liquid can be realized.
Because the liquid inlet channel 130 and the liquid outlet channel 140 are vertically communicated with the liquid separating channel 101 and the L-shaped channel 121 respectively, after the low-temperature liquid stops flowing, the redundant low-temperature liquid flows back downwards to the liquid inlet channel 130 and the liquid outlet channel 140 respectively under the action of gravity, and cannot be retained in the valve body 100.
The above is only the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any modification and replacement based on the technical solution and the utility model should be covered in the protection scope of the present invention.
Claims (4)
1. The utility model provides a multichannel vacuum insulation formula low temperature valve, includes valve body (100) and installs case (120) in valve body (100), and valve body (100) inside is opened has many to encircle branch liquid passageway (101) that case (120) annular distributes, the top of valve body (100) is equipped with interior neck pipe (110), rotatable valve rod (200) of installing in interior neck pipe (110), the top fixedly connected with of valve rod (200) is used for controlling valve rod pivoted operating device, and the bottom and the case (120) of valve rod (200) are connected, its characterized in that: an L-shaped channel (121) is formed in the valve core (120), one end of the L-shaped channel (121) is downwards communicated with the liquid inlet channel (130), the other end of the L-shaped channel is communicated with any one of the liquid separating channels (101), and each liquid separating channel (101) is connected with a liquid outlet channel (140).
2. The multi-channel vacuum insulated cryogenic valve of claim 1, wherein: the multi-channel vacuum heat preservation type low-temperature valve is characterized in that an outer pipe (500) is further sleeved on the multi-channel vacuum heat preservation type low-temperature valve, a plurality of layers of heat insulating materials (300) are filled between the outer pipe (500) and the inner neck pipe (110), and one ends, far away from the valve body (100), of the outer pipe (500) and the inner neck pipe (110) are connected with each other to enable a cavity between the outer pipe and the inner.
3. The multi-channel vacuum insulated cryogenic valve of claim 1 or 2, wherein: the operating mechanism is a servo motor (400).
4. The multi-channel vacuum insulated cryogenic valve of claim 3, wherein: an angle sensor (410) is coaxially arranged between the valve rod (200) and the servo motor (400).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922448505.5U CN211315226U (en) | 2019-12-30 | 2019-12-30 | Multichannel vacuum insulation formula low temperature valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922448505.5U CN211315226U (en) | 2019-12-30 | 2019-12-30 | Multichannel vacuum insulation formula low temperature valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211315226U true CN211315226U (en) | 2020-08-21 |
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ID=72056344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922448505.5U Active CN211315226U (en) | 2019-12-30 | 2019-12-30 | Multichannel vacuum insulation formula low temperature valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211315226U (en) |
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2019
- 2019-12-30 CN CN201922448505.5U patent/CN211315226U/en active Active
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