CN218441798U - Normal-pressure liquid nitrogen storage and filling equipment - Google Patents
Normal-pressure liquid nitrogen storage and filling equipment Download PDFInfo
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- CN218441798U CN218441798U CN202221565564.6U CN202221565564U CN218441798U CN 218441798 U CN218441798 U CN 218441798U CN 202221565564 U CN202221565564 U CN 202221565564U CN 218441798 U CN218441798 U CN 218441798U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
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Abstract
The utility model discloses a normal pressure liquid nitrogen storage fills dress equipment relates to the storage field technique of low temperature ordinary pressure liquid, especially indicates a liquid nitrogen fills dress equipment, fill car pump, liquid nitrogen and fill car pump outlet pipeline and liquid nitrogen tank car and fill the dress interface including normal pressure liquid nitrogen storage tank, liquid nitrogen storage tank inlet pipeline, liquid nitrogen, nitrogen storage tank bottom outlet pipeline fills car pump inlet pipeline with the liquid nitrogen and is connected, liquid nitrogen fills and has set gradually pneumatic valve and stretch-break valve between car pump outlet pipeline and the liquid nitrogen tank car dress interface, the liquid nitrogen storage tank is equipped with the liquid level detector. In the liquid nitrogen loading process, due to the fact that the hose connector falls off or the loading pipeline is broken, the pneumatic valve can be quickly closed to reduce liquid nitrogen leakage. Meanwhile, the tank car is started when a driver operates by mistake and does not break away from the connection of the hose, so that a liquid nitrogen loading pipeline is protected from being pulled and damaged, liquid nitrogen leakage is reduced to the maximum extent, and accidents are avoided.
Description
Technical Field
The utility model relates to a storage field technique of low temperature ordinary pressure liquid especially indicates a liquid nitrogen fills dress equipment.
Background
Nitrogen, oxygen and argon are gases at normal temperature and pressure, and are liquefied into liquid at low temperature for storage and transportation. Liquid nitrogen is obtained by air fractionation in industrial production, air is purified and liquefied in a pressurized and cooled environment, and the components in the air are separated by virtue of different boiling points. Nitrogen has a boiling point of-196 c and at normal atmospheric pressure temperatures below this will form liquid nitrogen, which if pressurized can be obtained at higher temperatures. If the human body is contacted without protective measures, the skin is at risk of severe frostbite. If the nitrogen generated by vaporization under normal pressure is excessive, the oxygen partial pressure in the air can be reduced, and oxygen deficiency asphyxiation is caused. In the process of filling the tank car with liquid nitrogen, a hose is connected with a filling interface on the tank car, and the hose is easy to fall off in the process of loading to cause leakage. Or the vehicle is started because the hose is not released due to improper operation of a driver, the hose is pulled and broken, liquid nitrogen leaks, the safety of personnel nearby a loading station is endangered, and pump equipment connected with the hose is damaged, so that loss is caused.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a normal pressure liquid nitrogen storage and filling apparatus, which overcomes the shortcomings of the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a normal pressure liquid nitrogen storage fills dress equipment, includes that normal pressure liquid nitrogen storage tank, liquid nitrogen storage tank inlet pipeline, liquid nitrogen fill car pump outlet pipeline and liquid nitrogen tank car fill dress interface, its characterized in that: the device is characterized in that an outlet pipeline at the bottom of the nitrogen storage tank is connected with an inlet pipeline of a liquid nitrogen charging vehicle pump, a pneumatic valve and a breaking valve are sequentially arranged between an outlet pipeline of the liquid nitrogen charging vehicle pump and a charging interface of a liquid nitrogen tank vehicle, and the liquid level detector is arranged in the liquid nitrogen storage tank.
Preferably, a liquid level control valve is arranged on the inlet pipeline of the liquid nitrogen storage tank.
Preferably, the liquid level control valve and a liquid level detector on the liquid nitrogen storage tank form a control loop, and the liquid level height of liquid nitrogen in the liquid nitrogen storage tank is controlled by opening the liquid level control valve.
As a preferable scheme, the liquid nitrogen storage tank is of a double-layer structure, the inner layer cavity is a liquid nitrogen storage space, and an interlayer cavity is arranged between the outer layer and the inner layer to form a heat insulation layer.
Preferably, the upper part of the inner layer of the liquid nitrogen storage tank is provided with a pressure detector.
Preferably, the upper part of the liquid nitrogen storage tank is provided with a pressure discharge control valve, and the inlet end of the pressure discharge control valve is communicated with an inner layer eduction pipe of the liquid nitrogen storage tank.
As a preferable scheme, the bottom of the inner layer of the liquid nitrogen storage tank is provided with an outlet pipeline communicated with the top of the inner layer, and the outlet pipeline is sequentially provided with a pressurization control valve and a pressurizer.
Preferably, the interlayer cavity between the inner layer and the outer layer of the liquid nitrogen storage tank is provided with a sealed gas pipeline, and the sealed gas pipeline is provided with a self-operated pressure regulating valve for controlling the pressure of the interlayer cavity between the inner layer and the outer layer of the liquid nitrogen storage tank.
Preferably, a filter is installed at the inlet of the liquid nitrogen truck-filling pump.
As a preferable scheme, the top of the inner layer of the liquid nitrogen storage tank is provided with an inner layer breather valve, and the top of the outer layer of the liquid nitrogen storage tank is provided with an outer layer breather valve.
Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly, can know by above-mentioned technical scheme, through fill the pump export and the tank wagon at the liquid nitrogen connects pneumatic valve and the snapping valve that sets gradually on unloading the pipeline between the mouth, because the hose interface drops or the loading pipeline breaks at liquid nitrogen loading in-process, can close through pneumatic valve fast and reduce the liquid nitrogen and leak. Meanwhile, after loading is finished, a driver operates by mistake, the tank car is started when the hose connection is not disconnected, and the tank car is instantly and rapidly disconnected and isolated and closed through the snapping valve, so that a loading pipeline is protected from being pulled and damaged, liquid nitrogen leakage is reduced to the maximum extent, and accidents are avoided.
To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a schematic view of an atmospheric liquid nitrogen storage and filling apparatus according to an embodiment of the present invention.
The attached drawings indicate the following:
1. the device comprises a liquid nitrogen storage tank 2, a liquid nitrogen storage tank inlet pipeline 3, a liquid nitrogen charging pump 4, a liquid nitrogen charging pump outlet pipeline 5, a liquid nitrogen tank charging interface 6, a pneumatic valve 7, a snapping valve 8, a liquid level detector 9, a pressure discharge control valve 10, an inner layer breather valve 11, a pressure detector 12, a supercharger 13, a pressurization control valve 14, a sealed gas pipeline 15, a self-operated pressure regulating valve 16, a liquid level control valve 17, a filter 18 and an outer layer breather valve.
Detailed Description
Please refer to fig. 1, which shows a specific structure of a preferred embodiment of the present invention, which is an ordinary pressure liquid nitrogen storage and filling apparatus, the structure of which includes an ordinary pressure liquid nitrogen storage tank 1, a liquid nitrogen storage tank inlet pipeline 2, a liquid nitrogen charging pump 3, a liquid nitrogen charging pump outlet pipeline 4 and a liquid nitrogen tank car filling interface 5, the outlet pipeline at the bottom of the nitrogen storage tank 1 is connected with the inlet pipeline of the liquid nitrogen charging pump 3, a pneumatic valve 6 and a snapping valve 7 are sequentially arranged between the liquid nitrogen charging pump outlet pipeline 4 and the liquid nitrogen tank car filling interface 5, and the liquid nitrogen storage tank 1 is provided with a liquid level detector 8.
Wherein, install filter 17 on the pipeline of liquid nitrogen pump 3 entry of filling the car for filter and get into the liquid nitrogen that liquid nitrogen filled the car pump 3, protect liquid nitrogen pump 3 of filling the car and prevent that impurity from inhaleing damage equipment in the pump. The pneumatic valve 6 arranged on the outlet pipeline 4 of the liquid nitrogen charging vehicle has a quick opening and closing function, and can be quickly closed and quickly isolated from leakage under the abnormal condition of liquid nitrogen loading. In addition, in order to avoid misoperation of a driver in the loading process, the connection between the liquid nitrogen tank car filling interface 5 and the tank car is not disconnected, the vehicle is started to leave, the liquid nitrogen filling car pump outlet pipeline 4 is pulled and broken, liquid nitrogen leakage is caused, the breaking valve 7 is installed behind the pneumatic valve 6, when the pneumatic valve is pulled by external force, the breaking valve 7 is firstly disconnected, the pipeline breakage is avoided, meanwhile, the two ends of the breaking valve 7 are automatically closed, and the liquid nitrogen is prevented from leaking from the two ends of the breaking valve 7.
The inlet pipeline 2 of the liquid nitrogen storage tank is provided with a liquid level control valve 16, the liquid level detector 8 for detecting the liquid level of the liquid nitrogen in the liquid nitrogen storage tank 1 is arranged on the liquid nitrogen storage tank 1, and a control loop is formed by the liquid level detector 8 and the liquid level control valve 16 and used for adjusting the liquid level of the liquid nitrogen in the liquid nitrogen storage tank 1.
The liquid nitrogen storage tank 1 is of a double-layer structure, the inner layer cavity stores liquid nitrogen, and the interlayer cavity between the inner layer and the outer layer forms a heat insulation layer for isolating external heat. In order to balance the pressure of the interlayer cavity between the inner layer and the outer layer of the liquid nitrogen storage tank 1, a sealed air pipeline is arranged in the interlayer cavity formed by the inner layer and the outer layer, a self-operated pressure regulating valve 15 is arranged on the sealed air pipeline, sealed air enters the interlayer cavity between the inner layer and the outer layer of the liquid nitrogen storage tank 1 through the sealed air pipeline, the introduction amount of the sealed air is controlled under the regulation of the self-operated pressure regulating valve 15, and the pressure in the interlayer cavity is increased. Meanwhile, an outer layer breather valve 18 is arranged at the top of the outer layer of the liquid nitrogen storage tank 1, and when the pressure of the interlayer cavity is overhigh, the outer layer breather valve 18 discharges and releases the pressure so as to balance the pressure of the interlayer cavity of the inner layer and the outer layer of the liquid nitrogen storage tank 1.
And a pressure detector 11 is arranged at the upper part of the inner layer of the liquid nitrogen storage tank 1 and is used for measuring the internal pressure of the liquid nitrogen storage tank 1. The upper part of the liquid nitrogen storage tank 1 is provided with a pressure discharge control valve 9, and the inlet end of the pressure discharge control valve 9 is communicated with an inner layer eduction tube of the liquid nitrogen storage tank 1 and is used for discharging the inner pressure of the inner layer of the liquid nitrogen storage tank 1. The bottom of the inner layer of the liquid nitrogen storage tank 1 is provided with an outgoing pipeline which is communicated with the top of the inner layer, and the outgoing pipeline is sequentially provided with a pressurization control valve 13 and a pressurizer 12. The pressurization control valve 13, the pressure discharge control valve 9 and the pressure detector 11 form double-loop control. In the loading process, when the pressure detector 11 measures that the pressure of liquid nitrogen in the inner layer of the liquid nitrogen storage tank 1 is low, the flow of the liquid nitrogen in the supercharger 12 is adjusted by controlling the opening of the supercharging control valve 13, so that the pressure of the inner layer is gradually increased; when the receiving flow of the liquid nitrogen storage tank 1 is overlarge and the pressure detector 11 measures that the inner layer pressure of the liquid nitrogen storage tank 1 rises too fast, the opening of the pressure discharge control valve 9 is adjusted, gas in the tank is discharged, and the inner layer pressure of the liquid nitrogen storage tank 1 is maintained in a safe range. Meanwhile, an inner layer breather valve 10 is installed at the top of the liquid nitrogen storage tank 1, the inlet end of the inner layer breather valve 10 is communicated with an inner layer eduction tube of the liquid nitrogen storage tank 1, and pressure change caused by the change of the inner layer altitude of the liquid nitrogen storage tank 1 is compensated through the opening and closing of the inner layer breather valve 10 after the change of the ambient air temperature and the change of the inner layer liquid nitrogen liquid level of the liquid nitrogen storage tank 1.
To sum up, the utility model discloses a design focus lies in, fills pneumatic valve 6 and the abruption valve 7 that sets gradually on the pipeline between the dress interface is filled to liquid nitrogen filling pump export and tank wagon, because the hose interface drops or the loading pipeline breaks at liquid nitrogen loading in-process, pneumatic valve closes fast, reduces the liquid nitrogen and leaks. Meanwhile, after loading is finished, if a driver operates the tank car by mistake when the hose connection is not broken away, the snapping valve can be quickly broken away and closed in a separation mode, the loading pipeline is protected from being damaged by traction, liquid nitrogen leakage is reduced, and accidents are avoided. During the process that the liquid nitrogen storage tank 1 receives liquid nitrogen, the liquid level of the liquid nitrogen storage tank 1 is controlled through the opening degree of the liquid level control valve 16. The liquid nitrogen pressure in the inner layer of the liquid nitrogen storage tank 1 is controlled by a pressure discharge control valve 9, a booster 12 and a pressurization control valve 13.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a normal pressure liquid nitrogen storage filling equipment, includes that normal pressure liquid nitrogen storage tank (1), liquid nitrogen storage tank inlet pipeline (2), liquid nitrogen fill car pump (3), liquid nitrogen fill car pump outlet pipeline (4) and liquid nitrogen tank car fill dress interface (5), its characterized in that: the liquid nitrogen storage tank is characterized in that an outlet pipeline at the bottom of the liquid nitrogen storage tank (1) is connected with an inlet pipeline of a liquid nitrogen charging vehicle pump (3), a pneumatic valve (6) and a breaking valve (7) are sequentially arranged between an outlet pipeline (4) of the liquid nitrogen charging vehicle pump and a charging interface (5) of the liquid nitrogen charging vehicle, and a liquid level detector (8) is mounted in the liquid nitrogen storage tank (1).
2. The atmospheric liquid nitrogen storage and filling apparatus according to claim 1, wherein: and a liquid level control valve (16) is arranged on the inlet pipeline (2) of the liquid nitrogen storage tank.
3. The atmospheric-pressure liquid nitrogen storage-filling apparatus according to claim 2, wherein: the liquid level control valve (16) and a liquid level detector (8) on the liquid nitrogen storage tank form a control loop, and the liquid level height of liquid nitrogen in the liquid nitrogen storage tank is controlled by opening the liquid level control valve.
4. The atmospheric-pressure liquid nitrogen storage-filling apparatus according to claim 1, wherein: the liquid nitrogen storage tank (1) is of a double-layer structure, the inner-layer cavity is a liquid nitrogen storage space, and an interlayer cavity is arranged between the outer layer and the inner layer to form a heat insulation layer.
5. The atmospheric liquid nitrogen storage and filling apparatus according to claim 1, wherein: and the upper part of the inner layer of the liquid nitrogen storage tank (1) is provided with a pressure detector (11).
6. The atmospheric liquid nitrogen storage and filling apparatus according to claim 1, wherein: the upper part of the liquid nitrogen storage tank (1) is provided with a pressure discharge control valve (9), and the inlet end of the pressure discharge control valve (9) is communicated with an inner layer eduction tube of the liquid nitrogen storage tank (1).
7. The atmospheric liquid nitrogen storage and filling apparatus according to claim 1, wherein: the bottom of the inner layer of the liquid nitrogen storage tank (1) is provided with an outgoing pipeline which is communicated with the top of the inner layer, and the outgoing pipeline is sequentially provided with a pressurization control valve (13) and a supercharger (12).
8. The atmospheric liquid nitrogen storage and filling apparatus according to claim 1, wherein: a sealed gas pipeline (14) is arranged in the interlayer cavity between the inner layer and the outer layer of the liquid nitrogen storage tank (1), and a self-operated pressure regulating valve (15) is arranged on the sealed gas pipeline and used for controlling the pressure of the interlayer cavity between the inner layer and the outer layer of the liquid nitrogen storage tank (1).
9. The atmospheric-pressure liquid nitrogen storage-filling apparatus according to claim 1, wherein: and a filter (17) is arranged at the inlet of the liquid nitrogen vehicle charging pump (3).
10. The atmospheric liquid nitrogen storage and filling apparatus according to claim 1, wherein: the inner layer breather valve (10) is installed at the top of the inner layer of the liquid nitrogen storage tank (1), and the outer layer breather valve (18) is installed at the top of the outer layer of the liquid nitrogen storage tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221565564.6U CN218441798U (en) | 2022-06-22 | 2022-06-22 | Normal-pressure liquid nitrogen storage and filling equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221565564.6U CN218441798U (en) | 2022-06-22 | 2022-06-22 | Normal-pressure liquid nitrogen storage and filling equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218441798U true CN218441798U (en) | 2023-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221565564.6U Active CN218441798U (en) | 2022-06-22 | 2022-06-22 | Normal-pressure liquid nitrogen storage and filling equipment |
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| Country | Link |
|---|---|
| CN (1) | CN218441798U (en) |
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2022
- 2022-06-22 CN CN202221565564.6U patent/CN218441798U/en active Active
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