CN212869341U - Low-temperature liquid storage tank gas-saving device - Google Patents
Low-temperature liquid storage tank gas-saving device Download PDFInfo
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- CN212869341U CN212869341U CN202021359411.7U CN202021359411U CN212869341U CN 212869341 U CN212869341 U CN 212869341U CN 202021359411 U CN202021359411 U CN 202021359411U CN 212869341 U CN212869341 U CN 212869341U
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Abstract
The utility model discloses a gas saving device of a low-temperature liquid storage tank, which comprises a tank body, wherein a first liquid discharge pipe is connected on the tank body, a low-temperature stop valve for liquid discharge is arranged at the far end of the first liquid discharge pipe, a second liquid discharge pipe is also connected at one end of the first liquid discharge pipe, which is adjacent to the tank body, and a low-temperature pressure reduction regulating valve is arranged at the far end of the second liquid discharge pipe; the tank body is also connected with an emptying pipe, and the far end of the emptying pipe is provided with a low-temperature stop valve for emptying; a three-way valve is arranged on the inner side of the emptying low-temperature stop valve on the emptying pipe, and safety valves are respectively arranged on two branches of the three-way valve; the device is characterized in that a connecting pipe is connected and arranged on the inner side of the emptying low-temperature stop valve on the emptying pipe, and the far end of the connecting pipe is connected with the low-temperature pressure reduction regulating valve; and an intermediate stop valve is also provided on the adapter tube. The utility model has the advantages of simple structure and capability of better reducing energy waste.
Description
Technical Field
The utility model belongs to the technical field of the cryogenic liquids storage tank, concretely relates to cryogenic liquids storage tank solar terms device.
Background
The cryogenic liquid storage tank is a jacketed vacuum powder heat-insulated pressure vessel dedicated to the storage and supply of cryogenic liquefied gases (e.g., liquid nitrogen, liquid oxygen, liquid argon, liquid carbon dioxide, etc.). Has been widely used in industrial production and daily life.
Among low-temperature liquid storage tanks of the prior structure, chinese patent (CN201568728U) discloses a gas and liquid supply device for a low-temperature liquid storage tank, which comprises a tank body, a liquid discharge pipe, a first liquid discharge valve and a second liquid discharge valve, wherein a liquid inlet end of the liquid discharge pipe penetrates through a liquid discharge port at the top of the tank body and extends into the bottom of an inner cavity of the tank body, and the first liquid discharge valve and the second liquid discharge valve are sequentially connected in series on the liquid discharge pipe along the flowing direction of liquid; the top of the tank body is also provided with an exhaust port which is connected with one end of an exhaust pipe, and the other end of the exhaust pipe is connected with a pressure reduction regulating valve in series and then is connected on a liquid discharge pipe between the first liquid discharge valve and the liquid discharge port of the tank body. In the above-mentioned patent structure, when the gaseous phase space pressure in the jar body was too high, excessive gas outwards and transfer to the blast pipe and utilized through the pipeline outflow to better avoid the energy extravagant. Better realizes the circulation liquid supply and gas supply, and can effectively avoid the gas waste caused by the exhaust of a safety valve.
However, in the existing low-temperature liquid storage tank, the tank body is also connected with an emptying pipe, and when the pressure at the top in the tank body is too high, a safety valve on the emptying pipe exhausts air outwards, so that the energy waste is also caused.
Therefore, it is a technical problem to be solved by those skilled in the art how to provide an air saving device for a cryogenic liquid storage tank, which has a simple structure and can better reduce energy waste.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: how to provide a simple structure can reduce the extravagant solar term device of cryogenic liquids storage tank of energy better.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a gas saving device of a low-temperature liquid storage tank comprises a tank body, wherein a first liquid discharge pipe is connected to the tank body, a low-temperature stop valve for liquid discharge is arranged at the far end of the first liquid discharge pipe, a second liquid discharge pipe is also connected to one end, adjacent to the tank body, of the first liquid discharge pipe, and a low-temperature pressure reduction regulating valve is arranged at the far end of the second liquid discharge pipe; the tank body is also connected with an emptying pipe, and the far end of the emptying pipe is provided with a low-temperature stop valve for emptying; a three-way valve is arranged on the inner side of the emptying low-temperature stop valve on the emptying pipe, and safety valves are respectively arranged on two branches of the three-way valve; the device is characterized in that a connecting pipe is connected and arranged on the inner side of the emptying low-temperature stop valve on the emptying pipe, and the far end of the connecting pipe is connected with the low-temperature pressure reduction regulating valve; and an intermediate stop valve is also provided on the adapter tube.
Like this, foretell low temperature liquid storage tank solar term device when using, when jar body top pressure is too high, can pass through the blow-down pipe, through middle stop valve, enters into the second fluid-discharge tube through low temperature step-down governing valve again, connects from the second fluid-discharge tube at last and carries to first fluid-discharge tube, discharges and utilizes through low temperature stop valve for the flowing back at first fluid-discharge tube lower extreme to the waste of the energy has been reduced. The device has the advantages of simple structure and capability of better reducing energy waste.
Preferably, the two branches of the three-way valve are respectively connected with a safety pipe, and the safety pipes are respectively provided with the safety valves.
Therefore, the design is more reasonable, and the installation of the two safety valves is more convenient.
Preferably, a lower low-temperature stop valve is further arranged on the second liquid discharge pipe.
Like this, through set up lower part low temperature stop valve on the second fluid-discharge tube, it is more reasonable to design, can carry out the shutoff to the second fluid-discharge tube and close the operation for it is safer during the use.
As optimization, the tank body is also connected with an exhaust pipe, and the far end of the exhaust pipe is connected with the low-temperature depressurization regulating valve through a connecting pipe; and a low-temperature stop valve for exhaust is arranged on the exhaust pipe.
Like this, when jar body gas phase space pressure was too high, can make gas enter into first drain pipe through the second fluid-discharge tube through normally opening low temperature stop valve for the exhaust, when reaching the exhaust, can be with gas recovery utilization, the waste of the reduction energy.
As optimization, be equipped with the flowing back connector in jar body upper end, first drain pipe is connected to be fixed on the flowing back connector, and the vertical downwardly extending of first drain pipe upper end to jar internal lower part position.
Like this for first drain pipe design is more reasonable, can be better with the internal gas-liquid discharge of jar.
As an optimization, the tank body comprises an inner cylinder body and an outer cylinder body which are designed in an interlayer mode, an interlayer space is formed between the inner cylinder body and the outer cylinder body, and a heat insulation layer structure is arranged in the interlayer space.
Like this, jar body design structure is simpler, can play heat retaining effect better.
And as optimization, perlite is arranged in the interlayer space.
Like this, set up the pearlite as the insulating layer structure in the intermediate layer space, the structure is simpler, and thermal-insulated effect is better.
Drawings
Fig. 1 is a schematic view of a throttling device of a cryogenic liquid storage tank according to an embodiment of the present invention.
Detailed Description
The invention will be further explained with reference to the following figures and examples:
referring to FIG. 1: a low-temperature liquid storage tank gas saving device comprises a tank body 1, wherein a first liquid discharge pipe 2 is connected to the tank body, a low-temperature stop valve 3 for liquid discharge is arranged at the far end of the first liquid discharge pipe, a second liquid discharge pipe 4 is also connected to one end, adjacent to the tank body, of the first liquid discharge pipe, and a low-temperature pressure reduction regulating valve 5 is arranged at the far end of the second liquid discharge pipe; the tank body is also connected with an emptying pipe 6, and the far end of the emptying pipe is provided with a low-temperature stop valve 7 for emptying; a three-way valve 8 is arranged on the inner side of the low-temperature stop valve for emptying on the emptying pipe, and safety valves 9 are respectively arranged on two branches of the three-way valve; a connecting pipe 10 is connected and arranged on the inner side of the emptying low-temperature stop valve on the emptying pipe, and the far end of the connecting pipe is connected with the low-temperature pressure reduction regulating valve 5; and an intermediate stop valve 11 is also provided on the adapter tube.
Like this, foretell low temperature liquid storage tank solar term device when using, when jar body top pressure is too high, can pass through the blow-down pipe, through middle stop valve, enters into the second fluid-discharge tube through low temperature step-down governing valve again, connects from the second fluid-discharge tube at last and carries to first fluid-discharge tube, discharges and utilizes through low temperature stop valve for the flowing back at first fluid-discharge tube lower extreme to the waste of the energy has been reduced. The device has the advantages of simple structure and capability of better reducing energy waste.
In the present embodiment, two branches of the three-way valve 8 are connected to safety pipes, and the safety pipes are provided with the safety valves 9.
Therefore, the design is more reasonable, and the installation of the two safety valves is more convenient.
In the present embodiment, the second drain pipe 4 is further provided with a lower low-temperature shutoff valve 12.
Like this, through set up lower part low temperature stop valve on the second fluid-discharge tube, it is more reasonable to design, can carry out the shutoff to the second fluid-discharge tube and close the operation for it is safer during the use.
In the specific embodiment, the tank body is also connected with an exhaust pipe 13, and the far end of the exhaust pipe is connected with the low-temperature depressurization regulating valve through a connecting pipe 14; the exhaust pipe is provided with an exhaust low-temperature shutoff valve 15.
Like this, when jar body gas phase space pressure was too high, can make gas enter into first drain pipe through the second fluid-discharge tube through normally opening low temperature stop valve for the exhaust, when reaching the exhaust, can be with gas recovery utilization, the waste of the reduction energy.
In this embodiment, a liquid discharge connecting opening is formed in the upper end of the tank body, the first liquid discharge pipe 2 is fixedly connected to the liquid discharge connecting opening, and the upper end of the first liquid discharge pipe vertically extends downwards to the lower position in the tank body.
Like this for first drain pipe design is more reasonable, can be better with the internal gas-liquid discharge of jar.
In this specific embodiment, the tank body includes an inner cylinder 16 and an outer cylinder 17 which are designed in an interlayer, and an interlayer space is formed between the inner cylinder and the outer cylinder, and a heat insulation layer structure is provided in the interlayer space.
Like this, jar body design structure is simpler, can play heat retaining effect better.
In this embodiment, perlite is disposed in the interlayer space. (perlite not shown in the figure).
Like this, set up the pearlite as the insulating layer structure in the intermediate layer space, the structure is simpler, and thermal-insulated effect is better.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (7)
1. A gas saving device of a low-temperature liquid storage tank comprises a tank body, wherein a first liquid discharge pipe is connected to the tank body, a low-temperature stop valve for liquid discharge is arranged at the far end of the first liquid discharge pipe, a second liquid discharge pipe is also connected to one end, adjacent to the tank body, of the first liquid discharge pipe, and a low-temperature pressure reduction regulating valve is arranged at the far end of the second liquid discharge pipe; the tank body is also connected with an emptying pipe, and the far end of the emptying pipe is provided with a low-temperature stop valve for emptying; a three-way valve is arranged on the inner side of the emptying low-temperature stop valve on the emptying pipe, and safety valves are respectively arranged on two branches of the three-way valve; the device is characterized in that a connecting pipe is connected and arranged on the inner side of the emptying low-temperature stop valve on the emptying pipe, and the far end of the connecting pipe is connected with the low-temperature pressure reduction regulating valve; and an intermediate stop valve is also provided on the adapter tube.
2. A cryogenic liquid tank throttling device as defined in claim 1, wherein: the two branches of the three-way valve are respectively connected with a safety pipe, and the safety pipes are respectively provided with the safety valves.
3. A cryogenic liquid tank throttling device as defined in claim 1, wherein: and a lower low-temperature stop valve is also arranged on the second liquid discharge pipe.
4. A cryogenic liquid tank throttling device as defined in claim 1, wherein: the tank body is also connected with an exhaust pipe, and the far end of the exhaust pipe is connected with the low-temperature pressure reduction regulating valve through a connecting pipe; and a low-temperature stop valve for exhaust is arranged on the exhaust pipe.
5. A cryogenic liquid tank throttling device as defined in claim 1, wherein: be equipped with the flowing back connector in jar body upper end, first drain pipe is connected to be fixed on the flowing back connector, and the vertical downwardly extending of first drain pipe upper end to jar internal lower part position.
6. A cryogenic liquid tank throttling device as defined in claim 1, wherein: the tank body comprises an inner cylinder body and an outer cylinder body which are designed in an interlayer mode, an interlayer space is formed between the inner cylinder body and the outer cylinder body, and a heat insulation layer structure is arranged in the interlayer space.
7. A cryogenic liquid tank throttling device as defined in claim 6, wherein: perlite is arranged in the interlayer space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021359411.7U CN212869341U (en) | 2020-07-13 | 2020-07-13 | Low-temperature liquid storage tank gas-saving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021359411.7U CN212869341U (en) | 2020-07-13 | 2020-07-13 | Low-temperature liquid storage tank gas-saving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212869341U true CN212869341U (en) | 2021-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021359411.7U Active CN212869341U (en) | 2020-07-13 | 2020-07-13 | Low-temperature liquid storage tank gas-saving device |
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|---|---|
| CN (1) | CN212869341U (en) |
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2020
- 2020-07-13 CN CN202021359411.7U patent/CN212869341U/en active Active
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