CN216113352U - A intercommunication supplies liquid device for storing liquid nitrogen container - Google Patents
A intercommunication supplies liquid device for storing liquid nitrogen container Download PDFInfo
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- CN216113352U CN216113352U CN202122571732.4U CN202122571732U CN216113352U CN 216113352 U CN216113352 U CN 216113352U CN 202122571732 U CN202122571732 U CN 202122571732U CN 216113352 U CN216113352 U CN 216113352U
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Abstract
The utility model discloses a communicated liquid supply device for a liquid nitrogen storage tank, which comprises a cooling gas tank, a first vacuum heat-insulation conveying pipe, a storage type liquid supply liquid nitrogen tank, a second vacuum heat-insulation conveying pipe and a booster pump, wherein the first vacuum heat-insulation conveying pipe is connected with the storage type liquid supply liquid nitrogen tank; one end of the first vacuum heat-insulation conveying pipe penetrates through a hole of the first sealing bottle stopper and is arranged in the cooling gas tank, and the other end of the first vacuum heat-insulation conveying pipe penetrates through a hole of the second sealing bottle stopper and is arranged at the bottom of the storage type liquid supply liquid nitrogen tank; one end of the second vacuum heat-insulation conveying pipe penetrates through a hole of the third sealing bottle stopper to be arranged at a position, close to the third sealing bottle stopper, of the storage type liquid supply liquid nitrogen tank, and the other end of the second vacuum heat-insulation conveying pipe is connected with an air outlet end of the booster pump. The utility model is convenient for adding liquid nitrogen into the cooling gas tank according to the experimental requirement, and solves the problem that the prior cooling gas tank cannot supplement the liquid nitrogen without stopping the experiment due to insufficient supply of the liquid nitrogen during the experiment.
Description
Technical Field
The utility model relates to the technical field of ultralow-temperature liquid filling, in particular to a communicated liquid supply device for a liquid nitrogen storage tank.
Background
The liquid nitrogen is in a liquid form formed by nitrogen at a low temperature, is inert, colorless, odorless, non-corrosive and non-flammable, and has an extremely low temperature; the nitrogen forms the majority of the atmosphere, the nitrogen accounts for 78% of the air, the nitrogen is inactive and does not support combustion, a large amount of heat absorption contact during vaporization causes frostbite, and the boiling point of the nitrogen is-196 ℃. At normal atmospheric pressure, nitrogen gas temperature will form liquid nitrogen if it is below-196 ℃. If pressurized, nitrogen gas can be brought to liquid nitrogen at higher temperatures.
With the continuous development of deep space exploration, higher requirements are put on the reliability of deep space equipment. In the face of the vast cold outer space, although some devices, instruments and electronic components on the satellite are in a temperature control system, a part of the devices, instruments and electronic components still need to work in the space and are directly contacted with the outside. In order to ensure the reliability of the electronic equipment exposed to the outer space, it is necessary to develop related low-temperature research, wherein an important equipment for low-temperature mechanical property testing is a dynamic mechanical tester (DMA). However, when a dynamic mechanical tester (DMA) is used for low-temperature testing, a cooling gas tank configured with the DMA cannot provide a long-time continuous liquid nitrogen supply for testing, so that the application range of the DMA is limited, and the practicability is reduced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides the communicated liquid supply device for the liquid nitrogen storage tank, which is convenient for providing long-time continuous liquid nitrogen supply for the test of a dynamic mechanical tester (DMA), thereby expanding the application range of the DMA and improving the practicability.
The utility model provides a communicated liquid supply device for a liquid nitrogen storage tank, which comprises a cooling gas tank, a first vacuum heat-insulation conveying pipe, a storage type liquid supply liquid nitrogen tank, a second vacuum heat-insulation conveying pipe and a booster pump, wherein the first vacuum heat-insulation conveying pipe is connected with the storage type liquid supply liquid nitrogen tank;
the upper end of the cooling gas tank is provided with a first through hole, and the first through hole is provided with a first sealing bottle plug with a hole;
the upper end of the storage type liquid supply liquid nitrogen tank is provided with a second bottle mouth and a second through hole, the second through hole is provided with a second sealing bottle plug with a hole, and the second bottle mouth is provided with a third sealing bottle plug with a hole;
one end of the first vacuum heat-insulation conveying pipe penetrates through a hole of the first sealing bottle stopper and is arranged in the cooling gas tank, and the other end of the first vacuum heat-insulation conveying pipe penetrates through a hole of the second sealing bottle stopper and is arranged at the bottom of the storage type liquid supply liquid nitrogen tank;
one end of the second vacuum heat-insulation conveying pipe penetrates through a hole of the third sealing bottle stopper to be arranged at a position, close to the third sealing bottle stopper, of the storage type liquid supply liquid nitrogen tank, and the other end of the second vacuum heat-insulation conveying pipe is connected with an air outlet end of the booster pump.
Preferably, the liquid supply device communicated with the liquid nitrogen storage tank further comprises a nitrogen gas bottle;
and the bottle mouth of the nitrogen bottle is connected with the air inlet end of the booster pump through a connecting pipeline.
Preferably, the liquid supply device for storing the liquid nitrogen tank further comprises a gas refrigeration accessory GCA;
the cooling gas tank is provided with a bottle opening, the gas refrigeration accessory GCA is connected with the bottle opening of the cooling gas tank, the gas refrigeration accessory GCA is provided with a liquid conveying pipe, the liquid conveying pipe is arranged in the cooling gas tank, and one end, far away from the gas refrigeration accessory GCA, of the liquid conveying pipe is located at the bottom of the cooling gas tank.
Preferably, the liquid supply device for storing the liquid nitrogen tank also comprises an automatic controller;
the gas refrigeration accessory GCA is provided with a detection device for testing the amount of liquid nitrogen in the cooling gas tank;
the automatic controller is electrically connected with the detection device, and the booster pump is electrically connected with the automatic controller;
when the detection device detects that the amount of liquid nitrogen in the cooling air tank is at the upper limit, the detection device transmits a detection signal to the automatic controller, and the automatic controller transmits a disconnection instruction to the booster pump; when the detection device detects that the amount of liquid nitrogen in the cooling air tank is at the lower limit, the detection device transmits the detection signal to the automatic controller, and the automatic controller transmits a switch-on instruction to the booster pump.
Preferably, a first check valve is arranged on the first vacuum heat insulation conveying pipe.
Preferably, a second check valve is arranged on the second vacuum heat-insulation conveying pipe.
The utility model has the following beneficial effects:
this technical scheme is through starting the booster pump, and the booster pump is pressurized in supplying liquid nitrogen jar to the memory type, and the memory type supplies liquid nitrogen jar to store liquid nitrogen pressurized to separate in the warm conveyer pipe carries the cooling gas jar through first vacuum to use in the assurance cooling gas jar and deposit sufficient liquid nitrogen volume, so that provide the liquid nitrogen supply of long-time persistence for the test of dynamic mechanics tester (DMA), thereby enlarged dynamic mechanics tester (DMA) range of application, improved the practicality.
Drawings
Fig. 1 is a schematic structural diagram according to an embodiment of the present invention.
Reference numerals:
1-a cooling gas tank, 11-a first through hole, 12-a first sealing bottle stopper, 2-a first vacuum heat-insulation delivery pipe, 21-a first check valve, 3-a storage type liquid supply nitrogen tank, 31-a second bottle mouth, 32-a second through hole, 33-a second sealing bottle stopper, 34-a third sealing bottle stopper, 4-a second vacuum heat-insulation delivery pipe, 41-a second check valve, 5-a booster pump, 6-a nitrogen gas bottle, 7-a gas refrigeration accessory GCA, 71-a liquid conveying pipe and 8-an automatic controller.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, the communicating liquid supply device for a storage liquid nitrogen tank provided by the embodiment includes a cooling gas tank 1, a first vacuum thermal insulation delivery pipe 2, a storage type liquid nitrogen supply tank 3, a second vacuum thermal insulation delivery pipe 4 and a booster pump 5. The upper end of the cooling gas tank 1 is provided with a first through hole 11, and the first through hole 11 is provided with a first sealing bottle stopper 12 with a hole. The upper end of the storage type liquid nitrogen supply tank 3 is provided with a second bottle mouth 31 and a second through hole 32, the second through hole 32 is provided with a second sealing bottle stopper 33 with a hole, and the second bottle mouth 31 is provided with a third sealing bottle stopper 34 with a hole. One end of the first vacuum heat-insulation conveying pipe 2 penetrates through a hole of the first sealing bottle stopper 12 to be arranged in the cooling gas tank 1, and the other end of the first vacuum heat-insulation conveying pipe 2 penetrates through a hole of the second sealing bottle stopper 33 to be arranged at the bottom of the storage type liquid supply liquid nitrogen tank 3; one end of the second vacuum heat-insulation conveying pipe 4 penetrates through a hole of the third sealing bottle stopper 34 to be arranged at the position, close to the third sealing bottle stopper 34, of the storage type liquid supply liquid nitrogen tank 3, and the other end of the second vacuum heat-insulation conveying pipe 4 is connected with an air outlet end of the booster pump 5.
This technical scheme is through starting booster pump 5, booster pump 5 pressurizes in to storage type supplies liquid nitrogen tank 3, the liquid nitrogen pressurized that storage type supplies liquid nitrogen tank 3 to store separates in temperature conveyer pipe 2 carries cooling gas pitcher 1 through first vacuum, thereby it has sufficient liquid nitrogen volume to guarantee to use in the cooling gas pitcher 1, so that provide the liquid nitrogen supply of long-time persistence for the test of dynamic mechanics tester (DMA), thereby dynamic mechanics tester (DMA) range of application has been enlarged, the practicality has been improved.
In addition, the other end of the first vacuum heat insulation conveying pipe 2 is positioned at the bottom of the storage type liquid supply liquid nitrogen tank 3, so that liquid nitrogen in the storage type liquid supply liquid nitrogen tank 3 can be conveniently and fully conveyed into the cooling gas tank 1; if the other end of the first vacuum heat-insulation conveying pipe 2 is positioned in the middle or at the upper part of the storage type liquid supply liquid nitrogen tank 3, liquid nitrogen at the lower part of the storage type liquid supply liquid nitrogen tank 3 cannot be conveyed into the cooling gas tank 1, so that the phenomenon of liquid nitrogen waste is caused; the other end of the first vacuum insulated delivery pipe 2 must therefore be arranged at the bottom of the storage type liquid supply nitrogen tank 3. One end of the second vacuum heat insulation conveying pipe 4 penetrates through the third sealing bottle stopper 34 to be arranged close to the third sealing bottle stopper 34, gas is input to the top of the inner cavity of the storage type liquid supply liquid nitrogen tank 3 through the booster pump 5, and the situation that the gas input by the booster pump 5 disturbs liquid nitrogen at the bottom of the storage type liquid supply liquid nitrogen tank 3 can be avoided, so that the liquid nitrogen in the storage type liquid supply liquid nitrogen tank 3 is stably conveyed to the cooling gas tank 1 through the first vacuum heat insulation conveying pipe 2.
In the embodiment, the liquid supply device communicated with the liquid nitrogen storage tank further comprises a nitrogen gas bottle 6; the bottle mouth of the nitrogen bottle 6 is connected with the air inlet end of the booster pump 5 through a connecting pipeline. The booster pump 5 is used for conveying nitrogen in the nitrogen bottle 6 as a booster gas to the top of the inner cavity of the storage type liquid supply liquid nitrogen tank 3, and the nitrogen is the best choice as the booster gas because the liquid nitrogen is in a liquid state of the nitrogen. It should be noted that the connection pipeline at the gas inlet end of the booster pump 5 is connected with an external liquid nitrogen supply tank, and liquid nitrogen can be added to the storage type liquid nitrogen supply tank 3 by starting the booster pump 5. Of course, when the liquid nitrogen needs to be filled into the storage type liquid nitrogen supply tank 3, the liquid nitrogen can be manually and independently filled into the storage type liquid nitrogen supply tank 3.
In addition, the liquid supply device for communicating with the liquid nitrogen storage tank also comprises a gas refrigeration accessory GCA 7; the cooling gas tank 1 is provided with a bottle mouth, the gas refrigeration accessory GCA 7 is connected with the bottle mouth of the cooling gas tank 1, the gas refrigeration accessory GCA 7 is provided with a liquid conveying pipe 71, the liquid conveying pipe 71 is arranged in the cooling gas tank 1, and one end, far away from the gas refrigeration accessory GCA 7, of the liquid conveying pipe 71 is positioned at the bottom of the cooling gas tank 1. The gas refrigeration accessory GCA 7 is directly connected with a dynamic mechanical tester (DMA), and the gas refrigeration accessory GCA 7 continuously supplies liquid nitrogen to the dynamic mechanical tester (DMA) by using the liquid nitrogen in the cooling gas tank 1. One end of the liquid conveying pipe 71, which is far away from the gas refrigeration accessory GCA 7, is positioned at the bottom of the cooling gas tank 1, and the design can ensure that the liquid conveying pipe 71 fully utilizes liquid nitrogen in the cooling gas tank 1; if the end of the liquid transfer pipe 71 remote from the gas refrigeration accessory GCA 7 is located at the middle or upper portion of the cooling gas tank 1, the liquid nitrogen at the lower portion inside the cooling gas tank 1 cannot be utilized, resulting in waste of the liquid nitrogen.
In order to facilitate the control of the storage type liquid supply liquid nitrogen tank 3 to automatically add liquid nitrogen into the cooling gas tank 1, the communicated liquid supply device for storing the liquid nitrogen tank also comprises an automatic controller 8; the gas refrigeration accessory GCA 7 is provided with a detection device for testing the amount of liquid nitrogen in the cooling gas tank; the automatic controller 8 is electrically connected with the detection device, and the booster pump 5 is electrically connected with the automatic controller 8. When the detection device detects that the amount of liquid nitrogen in the cooling gas tank 1 is at the upper limit, the detection device transmits the detection signal to the automatic controller 8, and the automatic controller 8 transmits a disconnection instruction to the booster pump 5. When the detection device detects that the amount of liquid nitrogen in the cooling gas tank 1 is at the lower limit, the detection device transmits the detection signal to the automatic controller 8, and the automatic controller 8 transmits a switch-on command to the booster pump 5. Since the upper/lower limit of the detecting device for detecting the amount of liquid nitrogen in the cooling gas tank 1 belongs to the prior art, it is not described herein again. The model of the automatic controller adopts an RS-485 chip so as to realize the automatic control of the liquid nitrogen filling. When the booster pump 5 receives the disconnection instruction, the booster pump 5 stops working; when the booster pump 5 receives a switch-on command, the booster pump 5 works and inputs a pressurized gas to the top of the inner cavity of the storage type liquid supply liquid nitrogen tank 3.
In order to avoid the backflow phenomenon of the liquid nitrogen in the cooling gas tank 1 to the storage type liquid nitrogen supply tank 3, the first vacuum heat insulation conveying pipe 2 is provided with a first check valve 21. In order to avoid the backflow of the pressurized gas at the upper end of the inner cavity of the storage type liquid supply liquid nitrogen tank 3 to the booster pump 5 side, the second vacuum heat insulation conveying pipe 4 is provided with a second check valve 41.
It should be noted that the above preferred embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; these modifications and substitutions do not cause the essence of the corresponding technical solution to depart from the scope of the technical solution of the embodiments of the present invention, and are intended to be covered by the claims and the specification of the present invention.
Claims (6)
1. The utility model provides a intercommunication confession liquid device for storing liquid nitrogen container which characterized in that: the device comprises a cooling gas tank, a first vacuum heat-insulation delivery pipe, a storage type liquid supply liquid nitrogen tank, a second vacuum heat-insulation delivery pipe and a booster pump;
the upper end of the cooling gas tank is provided with a first through hole, and the first through hole is provided with a first sealing bottle plug with a hole;
the upper end of the storage type liquid supply liquid nitrogen tank is provided with a second bottle mouth and a second through hole, the second through hole is provided with a second sealing bottle plug with a hole, and the second bottle mouth is provided with a third sealing bottle plug with a hole;
one end of the first vacuum heat-insulation conveying pipe penetrates through a hole of the first sealing bottle stopper and is arranged in the cooling gas tank, and the other end of the first vacuum heat-insulation conveying pipe penetrates through a hole of the second sealing bottle stopper and is arranged at the bottom of the storage type liquid supply liquid nitrogen tank;
one end of the second vacuum heat-insulation conveying pipe penetrates through a hole of the third sealing bottle stopper to be arranged at a position, close to the third sealing bottle stopper, of the storage type liquid supply liquid nitrogen tank, and the other end of the second vacuum heat-insulation conveying pipe is connected with an air outlet end of the booster pump.
2. The liquid supply device of claim 1, wherein: also comprises a nitrogen cylinder;
and the bottle mouth of the nitrogen bottle is connected with the air inlet end of the booster pump through a connecting pipeline.
3. The liquid supply device of claim 1, wherein: also comprises a gas refrigeration accessory GCA;
the cooling gas tank is provided with a bottle opening, the gas refrigeration accessory GCA is connected with the bottle opening of the cooling gas tank, the gas refrigeration accessory GCA is provided with a liquid conveying pipe, the liquid conveying pipe is arranged in the cooling gas tank, and one end, far away from the gas refrigeration accessory GCA, of the liquid conveying pipe is located at the bottom of the cooling gas tank.
4. The liquid supply device of claim 3, wherein: the automatic controller is also included;
the gas refrigeration accessory GCA is provided with a detection device for testing the amount of liquid nitrogen in the cooling gas tank;
the automatic controller is electrically connected with the detection device, and the booster pump is electrically connected with the automatic controller;
when the detection device detects that the amount of liquid nitrogen in the cooling air tank is at the upper limit, the detection device transmits a detection signal to the automatic controller, and the automatic controller transmits a disconnection instruction to the booster pump; when the detection device detects that the amount of liquid nitrogen in the cooling air tank is at the lower limit, the detection device transmits the detection signal to the automatic controller, and the automatic controller transmits a switch-on instruction to the booster pump.
5. The liquid supply device of claim 1, wherein:
and a first check valve is arranged on the first vacuum heat-insulation conveying pipe.
6. The liquid supply device of claim 1, wherein:
and a second check valve is arranged on the second vacuum heat-insulation conveying pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122571732.4U CN216113352U (en) | 2021-10-25 | 2021-10-25 | A intercommunication supplies liquid device for storing liquid nitrogen container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122571732.4U CN216113352U (en) | 2021-10-25 | 2021-10-25 | A intercommunication supplies liquid device for storing liquid nitrogen container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216113352U true CN216113352U (en) | 2022-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122571732.4U Active CN216113352U (en) | 2021-10-25 | 2021-10-25 | A intercommunication supplies liquid device for storing liquid nitrogen container |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216113352U (en) |
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2021
- 2021-10-25 CN CN202122571732.4U patent/CN216113352U/en active Active
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