CN108649470B - Explosion-proof case system based on cryogenic liquid pump - Google Patents

Explosion-proof case system based on cryogenic liquid pump Download PDF

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Publication number
CN108649470B
CN108649470B CN201810799087.1A CN201810799087A CN108649470B CN 108649470 B CN108649470 B CN 108649470B CN 201810799087 A CN201810799087 A CN 201810799087A CN 108649470 B CN108649470 B CN 108649470B
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liquid
heat conduction
explosion
heat
low
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CN108649470A (en
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陈天明
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Zhuhai Weiming Development Co ltd
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Zhuhai Weiming Development Co ltd
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/56Cooling; Ventilation
    • H02B1/565Cooling; Ventilation for cabinets

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention discloses an explosion-proof box system based on a low-temperature liquid pump, which comprises a conveying device for conveying low-temperature liquid, wherein the conveying device comprises the low-temperature liquid pump, a liquid inlet valve of the low-temperature liquid pump is used for receiving the low-temperature liquid conveyed from the outside, and an emptying valve of the low-temperature liquid pump is used for discharging waste liquid or gas-liquid mixture generated by temperature rise; the heat dissipation device is connected with the emptying valve and is used for heating the waste liquid or the gas-liquid mixture to a gaseous state; the anti-explosion box is provided with an air inlet pipe and an air outlet pipe which are communicated with the inner cavity of the anti-explosion box, the heat radiating device is connected with the air inlet pipe, and heated air enters the anti-explosion box from the air inlet pipe and is output from the air outlet pipe. The invention utilizes the recovered low-temperature liquid to exchange heat with the explosion-proof box, thereby greatly improving the heat dissipation effect.

Description

Explosion-proof case system based on cryogenic liquid pump
Technical Field
The invention relates to the technical field of explosion-proof boxes, in particular to an explosion-proof box system based on a low-temperature liquid pump.
Background
The explosion-proof box is provided with a plurality of explosion-proof distribution boxes, explosion-proof control boxes, explosion-proof distribution cabinets and the like and is used for the operation areas of dangerous gases such as inflammable and explosive gases and the like. The explosion proof box has a sealed interior environment within which various electrical instruments are positioned to control or detect various electrical devices within the work area. These electrical instruments, such as frequency converters and the like, generate heat during operation, thereby facing heat dissipation problems. In the prior art, heat of components generating heat such as a frequency converter is transferred to a heat dissipation plate, and then the heat of the heat dissipation plate is taken away through a heat dissipation plate. The heat dissipation mode is suitable for the situation that the heat generated by the smaller power of the components is lower, and once the heat is too large, the explosion-proof box can be caused to explode if the heat cannot be dissipated in time and the explosion-proof box can be caused to work abnormally. In practice, in a delivery site of a low-temperature liquid such as liquid nitrogen, a heat dissipation mode with better heat dissipation effect can be provided by utilizing the low-temperature condition of the environmental site.
Disclosure of Invention
The invention provides an explosion-proof box system based on a low-temperature liquid pump, which utilizes the recovered low-temperature liquid to exchange heat with an explosion-proof box, thereby greatly improving the heat dissipation effect.
An explosion-proof box system based on a cryogenic liquid pump comprises a conveying device for conveying cryogenic liquid, wherein the conveying device comprises the cryogenic liquid pump, a liquid inlet valve of the cryogenic liquid pump is used for receiving the cryogenic liquid conveyed externally, and an evacuation valve of the cryogenic liquid pump is used for discharging waste liquid or gas-liquid mixture generated by temperature rise; the heat dissipation device is connected with the emptying valve and is used for heating the waste liquid or the gas-liquid mixture to a gaseous state; the anti-explosion box is provided with an air inlet pipe and an air outlet pipe which are communicated with the inner cavity of the anti-explosion box, the heat radiating device is connected with the air inlet pipe, and heated air enters the anti-explosion box from the air inlet pipe and is output from the air outlet pipe.
Preferably, the heat dissipation device comprises a plurality of heat conduction pipes connected in sequence, and the waste liquid or the gas-liquid mixture discharged by the evacuation valve is transported in the heat conduction pipes.
Preferably, the heat transfer pipes are disposed parallel to each other and uniformly distributed in the transport direction of the waste liquid.
Preferably, the distance between two adjacent heat conducting pipes is equal and all the heat conducting pipes are arranged along the same straight line.
Preferably, the heat conducting pipe is provided with a plurality of heat conducting fins which radially and outwards extend along the radial direction of the heat conducting pipe.
Preferably, a connecting piece is arranged between two adjacent heat conducting pipes, and two ends of the connecting piece are respectively connected with the heat conducting sheets of the two adjacent heat conducting pipes.
Preferably, all the heat conducting pipes connected in sequence form a group, and the heat dissipation device is provided with a plurality of groups of heat conducting pipes.
Preferably, one end of the heat dissipating device is provided with a liquid collecting pipe, the other end of the heat dissipating device is provided with a gas collecting pipe, a heat conducting inlet is arranged on the liquid collecting pipe, a heat conducting outlet is arranged on the gas collecting pipe, one ends of the heat conducting pipes arranged in groups are connected with the liquid collecting pipe, and the other ends of the heat conducting pipes are connected with the gas collecting pipe.
Preferably, the air inlet pipe is arranged at the bottom end of one side of the explosion-proof box, and the air outlet pipe is arranged at the top end of the other side of the explosion-proof box opposite to the air inlet pipe.
Preferably, the cryogenic liquid is liquid nitrogen, liquid argon or liquid carbon dioxide.
In the invention, the low-temperature liquid pump discharges the waste liquid generated by temperature rise, the heat radiating device heats the waste liquid to a gaseous state, and then the waste liquid is led into the explosion-proof box to exchange heat with the internal environment of the explosion-proof box, so that the internal temperature of the explosion-proof box is reduced, and the gas is discharged through the gas outlet pipe. On one hand, the waste liquid generated by the original conveying system is utilized, the environmental resource is reasonably utilized, and the cost is reduced. On the other hand, the temperature of the heated gas is still lower, and the gas exchanges heat with the inside of the explosion-proof box, so that the temperature in the explosion-proof box can be quickly reduced, and the heat dissipation effect is greatly improved.
Drawings
FIG. 1 is a schematic diagram of an explosion proof tank system based on a cryogenic liquid pump according to an embodiment of the invention;
FIG. 2 is a front view of a heat dissipating device according to an embodiment of the present invention;
FIG. 3 is a side view of a heat sink according to an embodiment of the present invention;
fig. 4 is a schematic view illustrating a portion of a heat dissipating device according to an embodiment of the invention in a bottom view.
Detailed Description
The invention will be described in further detail below with reference to the drawings by means of specific embodiments.
An embodiment of the present invention provides an explosion-proof tank system based on a cryogenic liquid pump, which is applied to a working environment where cryogenic liquid is transported, as shown in fig. 1, and includes a transporting device 1 for transporting cryogenic liquid, where the transporting device 1 receives the cryogenic liquid and transports the cryogenic liquid outwards. The conveying device 1 comprises a low-temperature liquid pump, wherein the low-temperature liquid pump comprises a pump body, a driver 11 and a pump head 2, the driver 11 drives the pump body to work, and the pump head 2 is used as a compression end of the pump body and is used for pressurizing and compressing conveyed low-temperature liquid. The pump head 2 is connected with a liquid inlet valve 21 and an evacuation valve 22, the liquid inlet valve 21 receives external low-temperature liquid, the low-temperature liquid is usually at a temperature of more than zero hundred degrees, during the pressurization process, part of the low-temperature liquid is heated to rise in temperature, the waste liquid or the gas-liquid mixture after rising in temperature needs to be separated from the pump head 2, and the evacuation valve 22 is used for discharging the part of the waste liquid or the gas-liquid mixture generated by rising in temperature.
The explosion-proof tank system of this embodiment further includes a heat dissipating device 3 and an explosion-proof tank 4, where the heat dissipating device 3 is connected to the evacuation valve 22 to receive the waste liquid output by the cryogenic liquid pump, and at the same time, the heat dissipating device 3 is configured to heat the waste liquid or the gas-liquid mixture to a gaseous state, and the heat dissipating device 3 can control the temperature of the heated gas to keep the temperature thereof within a predetermined range so as to perform heat exchange with the explosion-proof tank 4.
The explosion-proof box 4 has a closed cavity, and a plurality of electric instruments and/or electric equipment, such as a frequency converter, a switching power supply or a distribution box, are arranged in the cavity. The outer surface of the explosion-proof box 4 is provided with an air inlet pipe 41 and an air outlet pipe 42 which are communicated with the inner cavity of the explosion-proof box 4, the output end of the heat dissipating device 3 is connected with the air inlet pipe 41, heated air enters the explosion-proof box 4 from the air inlet pipe 41, heat exchange is carried out with the inner environment of the explosion-proof box 4, the inner temperature of the explosion-proof box 4 is reduced, and the air after heat exchange is discharged through the air outlet pipe 42. The air outlet pipe 42 can be connected with a corresponding recovery system to recover and recycle the gas, and can also directly discharge the gas into the air aiming at the safety gas. However, in order to prevent the discharged gas from affecting the transportation environment in which the cryogenic liquid is located, the air outlet pipe 42 should extend beyond the safe range of the transportation environment in which the cryogenic liquid is located.
In one embodiment, as shown in fig. 2 and 3, the heat dissipating device 3 includes a plurality of heat conducting pipes 31 connected in series, and the waste liquid discharged from the drain valve 22 is transferred in the heat conducting pipes 31. The heat-conducting pipe 31 is directly exposed to the air, and the temperature of the normal temperature air is higher than that of the waste liquid, so that the waste liquid can naturally rise to the gaseous state. The temperature of the final output gas of the heat sink 3 can be controlled by controlling the length of the heat pipe 31 and the ambient temperature. The bottom of the heat conduction pipe 31 is provided with a supporting frame 30 to support the heat conduction pipe 31, and the heat conduction pipe 31 is prevented from being directly contacted with the ground.
Further, as shown in the side view of fig. 3, the heat conducting pipes 31 are disposed parallel to each other and are uniformly distributed in the conveying direction of the waste liquid or the gas-liquid mixture, and all the heat conducting pipes 31 may extend in the lateral direction or in the vertical direction, in this embodiment, all the heat conducting pipes 31 extend in the vertical direction, and two adjacent heat conducting pipes 31 are spaced apart by a predetermined distance. The two adjacent heat conduction pipes 31 are connected through the connecting pipe 34, so that the heat conduction pipes 31 are connected end to form a complete channel, and waste liquid or gas-liquid mixture sequentially passes through all the heat conduction pipes 31 to prolong the heat conduction length of the heat conduction pipes 31, so that the temperature of the waste liquid or gas-liquid mixture can be quickly raised.
Further, the distance between two adjacent heat conducting pipes 31 is equal and all the heat conducting pipes 31 are arranged along the same line, so that all the heat conducting pipes 31 are uniformly distributed on the same plane, and the heat conduction of the heat conducting pipes 31 is more uniform.
In one embodiment, as shown in fig. 4, the heat conducting tube 31 is provided with a plurality of heat conducting fins 32 extending radially outwards along the radial direction of the heat conducting tube 31. The heat conducting fins 32 are uniformly and symmetrically distributed relative to the axis of the heat conducting tube 31, 8 heat conducting fins 32 are arranged in the figure, and other numbers of heat conducting fins 32 can be arranged according to actual needs. The heat conducting sheet 32 may be integrally formed with the heat conducting tube 31 or fixed to the heat conducting tube 31 by welding or the like, and the length of the heat conducting sheet 32 may be matched with the heat conducting tube 31 and spread over the whole heat conducting tube 31. The heat conduction between the heat conduction pipe 31 and the heat conduction sheet 32 can be realized, so that the heat conduction area of the heat conduction pipe 31 is increased, and the temperature rise of the waste liquid is further accelerated. In fig. 4, the heat transfer pipe 31 is not labeled because the connection pipe 34 is connected to the heat transfer pipe 31, and thus the heat transfer pipe 31 is blocked.
Further, a connecting piece 33 is disposed between two adjacent heat conducting pipes 31, and two ends of the connecting piece 33 are respectively connected with the heat conducting fins 32 of two adjacent heat conducting pipes 31. The connection member 33 may have a square frame shape as shown in the drawing and is connected to the heat conductive fins 32 of four heat conductive pipes 31 adjacent to each other around. The connection member 33 may connect the heat transfer pipes 31 to enhance the overall structural strength.
Wherein all sequentially connected heat conducting pipes 31 form a group, and the heat dissipating device 3 is provided with a plurality of groups of heat conducting pipes 31. As shown in fig. 2, a group of sequentially connected heat conducting pipes 31 extends along the length direction, and a plurality of groups of heat conducting pipes 31 are arranged along the width direction, so that all the heat conducting pipes 31 are arranged in a matrix shape, and the heat conducting pipes 31 extending along the same length direction form a group, and a plurality of groups conduct heat simultaneously so as to accelerate the temperature rise of the waste liquid or the gas-liquid mixture.
Specifically, as shown in fig. 2, one end of the heat dissipating device 3 is provided with a liquid collecting tube 35, the other end is provided with a gas collecting tube 36, and the liquid collecting tube 35 and the gas collecting tube 36 have relatively closed tube cavities. The liquid collecting pipe 35 is provided with a heat conducting inlet 351, the gas collecting pipe 36 is provided with a heat conducting outlet 361, one end of each group of heat conducting pipes 31 is connected with the liquid collecting pipe 35, and the other end is connected with the gas collecting pipe 36. The exhaust valve 22 is connected with the heat conducting inlet 351, the heat conducting outlet 361 is connected with the air inlet pipe 41, the waste liquid or gas-liquid mixture enters the liquid collecting pipe 35 and is further distributed to each group of heat conducting pipes 31, and after flowing through all the heat conducting pipes 31, the waste liquid or gas-liquid mixture is collected in the gas collecting pipe 36 and finally conveyed to the explosion-proof box from the heat conducting outlet 361.
In one embodiment, the air inlet pipe 41 is disposed at the bottom end of one side of the explosion-proof tank 4, and the air outlet pipe 42 is disposed at the top end of the other side of the explosion-proof tank 4 opposite to the air inlet pipe 41. The air inlet pipe 41 and the air outlet pipe 42 are respectively arranged on two sides, so that air can transversely move in the explosion-proof box 4, the air inlet pipe 41 is arranged at the bottom end, the air outlet pipe 42 is arranged at the top end, and the air can naturally rise after being heated, so that the air rises to the top end from the bottom end, and in this way, the air can transversely move and longitudinally move, can spread inside the whole explosion-proof box 4, the heat dissipation effect is enhanced, and the inward temperature is kept balanced.
In the above embodiment, the explosion-proof box system further includes a fixing frame 5, and the conveying device 1, the heat dissipating device 3, the explosion-proof box 4 and other components are all fixed on the fixing frame 5. In the use, can remove whole mount 5, the user need not to reassemble or dismantle, can directly use, lets the user use more convenient. The cryogenic liquid may be liquid nitrogen, liquid argon, liquid carbon dioxide, or other safety gas, among others.
The foregoing is a further detailed description of the invention in connection with specific embodiments, and it is not intended that the invention be limited to such description. It will be apparent to those skilled in the art that several simple deductions or substitutions can be made without departing from the spirit of the invention.

Claims (3)

1. An explosion-proof case system based on cryogenic liquid pump, its characterized in that:
the device comprises a conveying device for conveying the low-temperature liquid, wherein the conveying device comprises a low-temperature liquid pump, a liquid inlet valve of the low-temperature liquid pump is used for receiving the low-temperature liquid conveyed outside, and an emptying valve of the low-temperature liquid pump is used for discharging waste liquid or gas-liquid mixture generated by temperature rise; the heat dissipation device is connected with the emptying valve and is used for heating the waste liquid or the gas-liquid mixture to a gaseous state; the heat dissipation device is connected with the air inlet pipe, and heated air enters the explosion-proof box from the air inlet pipe and is output from the air outlet pipe;
the heat dissipation device comprises a plurality of sequentially connected heat conduction pipes, waste liquid or gas-liquid mixture discharged by the evacuation valve is transmitted in the heat conduction pipes, the heat conduction pipes are arranged in parallel and uniformly distributed in the conveying direction of the waste liquid, the distance between every two adjacent heat conduction pipes is equal, all the heat conduction pipes are arranged along the same straight line, a plurality of heat conduction sheets which radially extend outwards along the heat conduction pipes are arranged on the heat conduction pipes, a connecting piece is arranged between every two adjacent heat conduction pipes, two ends of the connecting piece are respectively connected with the heat conduction sheets of the two adjacent heat conduction pipes, all the sequentially connected heat conduction pipes form a group, and the heat dissipation device is provided with a plurality of groups of heat conduction pipes;
one end of the heat dissipation device is provided with a liquid collecting pipe, the other end of the heat dissipation device is provided with a gas collecting pipe, a heat conduction inlet is formed in the liquid collecting pipe, a heat conduction outlet is formed in the gas collecting pipe, one ends of the heat conduction pipes arranged in groups are connected with the liquid collecting pipe, and the other ends of the heat conduction pipes are connected with the gas collecting pipe.
2. The explosion proof tank system according to claim 1, wherein:
the air inlet pipe is arranged at the bottom end of one side of the explosion-proof box, and the air outlet pipe is arranged at the top end of the other side of the explosion-proof box opposite to the air inlet pipe.
3. The explosion proof tank system according to claim 1, wherein:
the low-temperature liquid is liquid nitrogen, liquid argon or liquid carbon dioxide.
CN201810799087.1A 2018-07-19 2018-07-19 Explosion-proof case system based on cryogenic liquid pump Active CN108649470B (en)

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CN201810799087.1A CN108649470B (en) 2018-07-19 2018-07-19 Explosion-proof case system based on cryogenic liquid pump

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Application Number Priority Date Filing Date Title
CN201810799087.1A CN108649470B (en) 2018-07-19 2018-07-19 Explosion-proof case system based on cryogenic liquid pump

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CN108649470B true CN108649470B (en) 2024-01-26

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004251461A (en) * 1999-10-14 2004-09-09 Koa Gas Nihon Co Ltd Air temperature and hot water combination type vaporizer and air temperature and hot water combination type gas manufacturing plant
CN102065670A (en) * 2010-12-28 2011-05-18 煤炭科学研究总院重庆研究院 Method and device for radiating heat of anti-explosion box body
WO2012120580A1 (en) * 2011-03-10 2012-09-13 株式会社神戸製鋼所 Gasification device for low-temperature liquefied gas
CN202970756U (en) * 2012-08-07 2013-06-05 神华集团有限责任公司 Mining liquid nitrogen temperature reducing device
CN206300002U (en) * 2016-12-20 2017-07-04 梅州中燃城市燃气发展有限公司 A kind of water-bath type vapourizing unit of natural gas
CN206611071U (en) * 2017-02-27 2017-11-03 国网河南柘城县供电公司 A kind of power scheduling preassembled transformer station
CN206743766U (en) * 2017-09-22 2017-12-12 国家电网公司 A kind of new electrically equipment cooling device
CN207280234U (en) * 2017-09-05 2018-04-27 安徽宝天新能源科技有限公司 A kind of air temperature type is from defrosting vaporizer
CN208352831U (en) * 2018-07-19 2019-01-08 珠海市伟名发展有限公司 A kind of explosion-proof tank system based on cryogenic liquid pump

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004251461A (en) * 1999-10-14 2004-09-09 Koa Gas Nihon Co Ltd Air temperature and hot water combination type vaporizer and air temperature and hot water combination type gas manufacturing plant
CN102065670A (en) * 2010-12-28 2011-05-18 煤炭科学研究总院重庆研究院 Method and device for radiating heat of anti-explosion box body
WO2012120580A1 (en) * 2011-03-10 2012-09-13 株式会社神戸製鋼所 Gasification device for low-temperature liquefied gas
CN202970756U (en) * 2012-08-07 2013-06-05 神华集团有限责任公司 Mining liquid nitrogen temperature reducing device
CN206300002U (en) * 2016-12-20 2017-07-04 梅州中燃城市燃气发展有限公司 A kind of water-bath type vapourizing unit of natural gas
CN206611071U (en) * 2017-02-27 2017-11-03 国网河南柘城县供电公司 A kind of power scheduling preassembled transformer station
CN207280234U (en) * 2017-09-05 2018-04-27 安徽宝天新能源科技有限公司 A kind of air temperature type is from defrosting vaporizer
CN206743766U (en) * 2017-09-22 2017-12-12 国家电网公司 A kind of new electrically equipment cooling device
CN208352831U (en) * 2018-07-19 2019-01-08 珠海市伟名发展有限公司 A kind of explosion-proof tank system based on cryogenic liquid pump

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