CN106679263A - Liquid nitrogen cooling capacity recycling device and control method - Google Patents
Liquid nitrogen cooling capacity recycling device and control method Download PDFInfo
- Publication number
- CN106679263A CN106679263A CN201611117840.1A CN201611117840A CN106679263A CN 106679263 A CN106679263 A CN 106679263A CN 201611117840 A CN201611117840 A CN 201611117840A CN 106679263 A CN106679263 A CN 106679263A
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- liquid nitrogen
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
- F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/001—Arrangement or mounting of control or safety devices for cryogenic fluid systems
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
The invention relates to the fields of energy recycling and conversion, in particular to a liquid nitrogen cooling capacity recycling device and a control method. The device comprises a cold exchange module, a liquid nitrogen inlet, a nitrogen outlet, an ice water inlet, an ice water outlet, a nitrogen pipe used for conveying liquid nitrogen and nitrogen, and a water pipe used for conveying ice water. The cold exchange module comprises a first cold exchange module body and a second cold exchange module body. The liquid nitrogen inlet sequentially communicates with the first cold exchange module body, the second cold exchange module body and the nitrogen outlet through the nitrogen pipe. The ice water inlet sequentially communicates with the second cold exchange module body, the first cold exchange module body and the ice water outlet through the water pipe. The cold exchange module is internally provided with liquid nitrogen channels and ice water channels. The liquid nitrogen channels and the ice water channels are arranged alternately. The liquid nitrogen channels communicate with the nitrogen pipe. The ice water channels communicate with the water pipe. The liquid nitrogen cooling capacity recycling device can recycle cooling capacity generated during vaporization of liquid nitrogen and replace various kinds of cooling equipment, and part of refrigerating power consumption is saved.
Description
Technical field
The present invention relates to energy regenerating conversion art, more particularly to a kind of liquid nitrogen cold air retracting device and control method.
Background technology
Liquid nitrogen is the nitrogen of liquid condition.Liquid nitrogen can be produced by special equipment, it is also possible to produce the process of liquid oxygen
It is middle to obtain as side-product.Liquid nitrogen has very low temperature, and its boiling point is -195.8 DEG C, can serve as deep cooling agent.Liquid nitrogen is also
Gaseous state can be changed into from liquid, become nitrogen, can be passed through in heat-treatment furnace as protective gas.In atmosphere, shared by nitrogen
Ratio it is maximum.
Substantial amounts of nitrogen, main usess is needed to be voltage gas in filling short-circuiting device, large-scale integrated in electron trade
Circuit, colored and black and white kinescope, television set and recorder parts and manufacture quasiconductor and electrical equipment protective gas, laser
The nitrogen-based atmosphere of the electrical equipments such as punching production.Although liquid nitrogen is extensively applied in electron trade, current most enterprises are all
Liquid nitrogen is gasified using carburator, carburator is a kind of a kind of equipment for the gas of liquid being converted into gaseous atmospheres.Liquid
During nitrogen, a large amount of colds are directly discharged in air, and these colds are not fully utilized, and carburator
It is to be exchanged heat by air and liquid nitrogen, the coefficient of heat transfer of air is little.
The content of the invention
In order to the energy regenerating that liquid nitrogen vaporization is produced gets up to be used, the present invention provides a kind of liquid nitrogen cold air and reclaims dress
Put, it is intended to reclaim the cold of liquid nitrogen vaporization generation, and save part refrigeration electricity consumption.
The present invention provides a kind of liquid nitrogen cold air retracting device, enters including cold drawing block, liquid nitrogen entrance, nitrogen outlet, frozen water is changed
Mouth, frozen water outlet, the nitrogen pipe for conveying liquid nitrogen and nitrogen, the water pipe for conveying frozen water, the cold drawing block that changes is including first
Change cold drawing block and second and change cold drawing block, the liquid nitrogen entrance by nitrogen pipe be sequentially communicated first change cold drawing block, second change cold drawing block,
Nitrogen outlet, the frozen water entrance by water pipe be sequentially communicated second change cold drawing block, first change cold drawing block, frozen water outlet, it is described
Change and liquid nitrogen passage and frozen water passage are provided with cold drawing block, the liquid nitrogen passage and frozen water passage are arranged alternately, the liquid nitrogen passage
Connect with nitrogen pipe, the frozen water passage is connected with water pipe.
As a further improvement on the present invention, liquid nitrogen cold air retracting device includes that temperature inductor and electric flow are adjusted
Valve, the electric flow control valve carries out Flow-rate adjustment according to the temperature that temperature inductor is measured, and the temperature inductor is arranged
Change cold drawing block, second change the liquid nitrogen import and export of cold drawing block first, the electric flow control valve is arranged on nitrogen pipe.
As a further improvement on the present invention, the electric flow control valve includes the first electric flow control valve and second
Electric flow control valve, first electric flow control valve is connected on the second nitrogen pipe for changing the outlet of cold drawing block liquid nitrogen, described
Second electric flow control valve is arranged on the nitrogen pipe that liquid nitrogen entrance is connected with nitrogen outlet.
As a further improvement on the present invention, liquid nitrogen cold air retracting device includes pressure transducer and pressure-control valve, institute
State pressure-control valve carries out pressure regulation according to the pressure that pressure transducer is measured, and the pressure transducer is arranged on liquid nitrogen entrance
On the nitrogen pipe of nitrogen outlet, the pressure-control valve is arranged on the nitrogen pipe that liquid nitrogen entrance is connected with nitrogen outlet.
As a further improvement on the present invention, liquid nitrogen cold air retracting device includes temperature sensor, circulating pump, converter,
The converter is connected with circulating pump, and the circulating pump is connected on the second water pipe changed between cold drawing block and frozen water entrance, institute
State temperature sensor and be arranged on first and change cold drawing block, second change the frozen water import and export of cold drawing block, the converter is according to temperature
The pump-out of the temperature adjustment circulating pump of sensor measurement.
As a further improvement on the present invention, liquid nitrogen cold air retracting device includes attemperater, and the attemperater is divided into
Water inlet casing and water outlet casing, the water inlet casing is connected on the water pipe between frozen water entrance and circulating pump, the inlet water tank
Body is provided with water supplement port, and the water outlet casing is connected on the first water pipe for changing cold drawing block and frozen water outlet, the water inlet casing with
Temperature sensor is equipped with water pipe on water pipe between frozen water entrance, between the water outlet casing and frozen water outlet.
As a further improvement on the present invention, the cold drawing block that changes is including end-of-the-pipe and blowoff valve, the end-of-the-pipe
One end is connected with frozen water passage, and its other end is connected with blowoff valve.
As a further improvement on the present invention, the frozen water passage and liquid nitrogen passage for changing cold drawing block is bilayer and changes cold drawing
Structure, the bilayer changes cold drawing liquid nitrogen passage and welds a welding fabrication using laser half.
The present invention also provides a kind of cold air recycling and control method and comprises the following steps：
A. electric flow control valve is opened, liquid nitrogen is entered and full of nitrogen pipe and liquid nitrogen passage from liquid nitrogen entrance；
B. open the circulation pump, water is entered and full of water pipe and frozen water passage from frozen water entrance；
C. the temperature inductor on water pipe measures tube wall temperature value, and the temperature value of measurement is delivered to converter, converter control
The flow of circulating pump processed.
As a further improvement on the present invention, the step C includes：
C1. the temperature inductor of water outlet measures the temperature value of tube wall, if temperature value is not less than zero degree, temperature value is transmitted
To temperature difference inductor, and keep constant amount of water or subtract signal transmission to converter, Frequency Converter Control circulating pump by controller
Few water yield；If the close zero degree of temperature value, temperature value is passed to temperature difference inductor, and change is given signal transmission by controller
Frequency device, the Frequency Converter Control circulating pump increase water yield.
The invention has the beneficial effects as follows：The device not only can reclaim the cold of liquid nitrogen vaporization generation, can also substitute very
Multiplex cool equipment, saves part refrigeration electricity consumption, as long as while pair need uniform temperature and humidity requirement, being required for throughout the year
The enterprise of refrigeration, by the utilization of the cold recovery to liquid nitrogen, can optimize production procedure, reduce production cost, improve economical
The quality and efficiency of growth.
Description of the drawings
Fig. 1 is a kind of structure chart of liquid nitrogen cold air retracting device of the invention；
Fig. 2 is the structure chart that cold drawing block is changed in the present invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.
As depicted in figs. 1 and 2, a kind of liquid nitrogen cold air retracting device includes changing cold drawing block 1, liquid nitrogen entrance 21, nitrogen outlet
22nd, the outlet 32, the nitrogen pipe 4 for conveying liquid nitrogen and nitrogen of frozen water entrance 31, frozen water, the water pipe 5 for conveying frozen water, change cold drawing
Block 1 changes cold drawing block 11 and second and changes cold drawing block 12 including first, and liquid nitrogen entrance 21 is sequentially communicated first and changes cold drawing block by nitrogen pipe 4
11st, cold drawing block 12, nitrogen outlet 22 are changed second, frozen water entrance 31 is sequentially communicated second and changes cold drawing block 12, first changes by water pipe 5
Cold drawing block 11, frozen water outlet 32, changes and liquid nitrogen passage 13 and frozen water passage 14 is provided with cold drawing block 1, and liquid nitrogen passage 13 and frozen water are logical
Road 14 is arranged alternately, and liquid nitrogen passage 13 is connected with nitrogen pipe 4, frozen water passage 14 and water pipe（5）Connection.
The device changes cold drawing block 1 and carries out recovery the cold for discharging by double sections, and organic efficiency is more efficient
90 percent yield can be reached：One section is reclaimed, and to be liquid nitrogen entered by liquid nitrogen entrance 21 changes cold drawing block 1 and changed with water
It is cold so as to obtaining low temperature nitrogen and chilled water；It is that low temperature nitrogen is carried out secondary cold recovery that two-stage nitration is reclaimed, and reaches double sections and reclaims
Effect, it is so more efficient more energy efficient.
Cold drawing block 1 is changed including end-of-the-pipe 15 and blowoff valve 16, the one end of end-of-the-pipe 15 is connected with frozen water passage 14, and its is another
One end is connected with blowoff valve 16.
The device has installed end-of-the-pipe 15 and drain additional：First, prevent dirt to be hidden in and change cold drawing block, it is ensured that Effec-tive Function；
2nd, prevent from changing cold drawing block inner icing and be difficult to resolve jelly.
The frozen water passage 14 and liquid nitrogen passage 13 for changing cold drawing block 1 is bilayer and changes cold drawing structure, and bilayer changes cold drawing liquid nitrogen and leads to
Road welding fabrication is welded using laser half.
Board-like cold-exchange uses bilayer and changes cold, and bilayer changes the design of cold drawing passage and is effectively isolated cooling water, prevents from changing cold
Plate rupture affects the purity of gas in gas.
The liquid nitrogen cold air retracting device includes temperature inductor 6 and electric flow control valve, electric flow control valve according to
The temperature of the measurement of temperature inductor 6 carries out Flow-rate adjustment, and temperature inductor 6 is arranged on first and changes cold drawing block 11, second changes cold drawing
The liquid nitrogen import and export of block 12, electric flow control valve is arranged on nitrogen pipe 4.
The device inner loop pump adopts VFC, is adjusted according to the electric flow control valve inside temperature control machine
The concrete flow of water does not do unnecessary power consumption to guarantee to change cold efficiency accomplish how many colds changed with how many colds.
Wherein, electric flow control valve includes the first electric flow control valve 71 and the second electric flow control valve 72, the
One electric flow control valve 71 is connected on the second nitrogen pipe 4 for changing the liquid nitrogen of cold drawing block 12 outlet 22, the second electric flow control valve
72 are arranged on the nitrogen pipe 4 that liquid nitrogen entrance 21 is connected with nitrogen outlet 22.
Liquid nitrogen cold air retracting device includes pressure transducer 81 and pressure-control valve 82, and pressure-control valve 82 is passed according to pressure
The pressure of the measurement of sensor 81 carries out pressure regulation, and pressure transducer 81 is arranged on the nitrogen pipe 4 of liquid nitrogen entrance 21 and nitrogen outlet 22
On, pressure-control valve 82 is arranged on the nitrogen pipe 4 that liquid nitrogen entrance 21 is connected with nitrogen outlet 22.
Using duplicate protection system, it is ensured that workshop gas.The device induces outlet pressure using pressure transducer, setting
The standard value that one workshop uses：When pressure is less than standard value, electric flow control valve meeting standard-sized sheet is used with meeting workshop.When
Electric flow control valve breaks down, and mechanical bypass valve also can be opened to ensure workshop gas consumption according to pressure.
Liquid nitrogen cold air retracting device includes temperature sensor 6, circulating pump 73, converter 74, converter 74 and circulating pump 73
Connection, circulating pump 73 is connected on the second water pipe 5 changed between cold drawing block 12 and frozen water entrance 31, and the temperature sensor 6 sets
Put and change cold drawing block 11, second change the frozen water import and export of cold drawing block 12 first, the converter 74 is surveyed according to temperature sensor 6
The pump-out of the temperature adjustment circulating pump 73 of amount.
Wherein, liquid nitrogen cold air retracting device includes attemperater 9, and 9 points of the attemperater is water inlet casing and water tank
Body, the water inlet casing is connected on the water pipe 5 between frozen water entrance 31 and circulating pump 73, and the water inlet casing is provided with water supplement port
91, the water outlet casing is connected on the first water pipe for changing cold drawing block 11 and frozen water outlet 32.
Wherein, on the water pipe 5 intake between casing and frozen water entrance 31, between the water outlet casing and frozen water outlet 32
Temperature sensor 6 is equipped with water pipe 5.
The device, according to the aperture of temperature control flow valve, efficiently controls the import and export stream of cold recovery system using PLC
Measure to guarantee workshop gas, to guarantee the thermostatic of stable use cold spot, while have also been made bypass flow regulator, it is ensured that workshop
Gas consumption.
A kind of cold air recycling and control method of the present invention is comprised the following steps：
A. electric flow control valve is opened, liquid nitrogen is entered and full of nitrogen pipe 4 and liquid nitrogen passage 13 from liquid nitrogen entrance 21；
B. open the circulation pump 73, water is entered and full of water pipe 5 and frozen water passage 14 from frozen water entrance 31；
C. the temperature inductor 6 on water pipe 5 measures tube wall temperature value, and the temperature value of measurement is delivered to converter 74, frequency conversion
Device 74 controls the flow of circulating pump 73.
Wherein, step C includes：
C1. the temperature inductor 6 of water outlet measures the temperature value of tube wall, if temperature value is not less than zero degree, temperature value is passed
Pass temperature difference inductor, and by controller signal transmission to converter 74, the control circulating pump 73 of converter 74 keeps constant
The water yield reduces the water yield；If the close zero degree of temperature value, temperature value temperature difference inductor is passed to, and by controller signal
Pass to converter 74, the control increase water yield of circulating pump 73 of converter 74.
Be directed to the too low liquid nitrogen of liquid nitrogen temperature from liquid be changed into it is gaseous during absorb saline heat, water release heat
Temperature is reduced, and the temperature to prevent water is reduced to subzero and tube wall icing phenomenon occurs, and a control is increased in this device
Loop, i.e., measure tube wall temperature value by temperature inductor 6, temperature inductor 6 is arranged at water import and export, because water goes out
Mouth temperature is minimum, as long as ensureing that the temperature at water out is not less than zero degree, measured temperature is passed to temperature difference inductor,
Give converter signal transmission by controller, by the flow of Frequency Converter Control water pump, if tube wall temperature be reduced to it is close
Zero degree, just increases the flow of water by this control loop, so as to tube wall temperature rising, because certain liquid nitrogen flow vaporization is inhaled
The heat of receipts is constant, according to law of conservation of energy, increases the flow of water, and the difference variation value of water is reduced, i.e. the temperature of water
What is reduced lacks, so that it may prevent tube wall icing phenomenon.
Above content is to combine specific preferred implementation further description made for the present invention, it is impossible to assert
The present invention be embodied as be confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of without departing from present inventive concept, some simple deduction or replace can also be made, should all be considered as belonging to the present invention's
Protection domain.
Claims (10)
1. a kind of liquid nitrogen cold air retracting device, it is characterised in that including changing cold drawing block（1）, liquid nitrogen entrance（21）, nitrogen outlet
（22）, frozen water entrance（31）, frozen water outlet（32）, nitrogen pipe for conveying liquid nitrogen and nitrogen（4）, water pipe for conveying frozen water
（5）, it is described to change cold drawing block（1）Cold drawing block is changed including first（11）Cold drawing block is changed with second（12）, the liquid nitrogen entrance（21）It is logical
Cross nitrogen pipe（4）It is sequentially communicated first and changes cold drawing block（11）, second change cold drawing block（12）, nitrogen outlet（22）, the frozen water entrance
（31）By water pipe（5）It is sequentially communicated second and changes cold drawing block（12）, first change cold drawing block（11）, frozen water outlet（32）, it is described to change
Cold drawing block（1）In be provided with liquid nitrogen passage（13）With frozen water passage（14）, the liquid nitrogen passage（13）With frozen water passage（14）Alternately
Arrangement, the liquid nitrogen passage（13）With nitrogen pipe（4）Connection, the frozen water passage（14）With water pipe（5）Connection.
2. liquid nitrogen cold air retracting device according to claim 1, it is characterised in that including temperature inductor（6）With it is electronic
Flow control valve, the electric flow control valve is according to temperature inductor（6）The temperature of measurement carries out Flow-rate adjustment, the temperature
Induction apparatuss（6）It is arranged on first and changes cold drawing block（11）, second change cold drawing block（12）Liquid nitrogen import and export, the electric flow adjusts
Section valve is arranged on nitrogen pipe（4）On.
3. liquid nitrogen cold air retracting device according to claim 2, it is characterised in that the electric flow control valve includes the
One electric flow control valve（71）With the second electric flow control valve（72）, first electric flow control valve（71）It is connected to
Second changes cold drawing block（12）Liquid nitrogen is exported（22）Nitrogen pipe（4）On, second electric flow control valve（72）It is arranged on liquid nitrogen
Entrance（21）And nitrogen outlet（22）The nitrogen pipe of connection（4）On.
4. liquid nitrogen cold air retracting device according to claim 1, it is characterised in that including pressure transducer（81）And pressure
Control valve（82）, the pressure-control valve（82）According to pressure transducer（81）The pressure of measurement carries out pressure regulation, the pressure
Force transducer（81）It is arranged on liquid nitrogen entrance（21）And nitrogen outlet（22）Nitrogen pipe（4）On, the pressure-control valve（82）If
Put in liquid nitrogen entrance（21）And nitrogen outlet（22）The nitrogen pipe of connection（4）On.
5. liquid nitrogen cold air retracting device according to claim 1, it is characterised in that including temperature sensor（6）, circulating pump
（73）, converter（74）, the converter（74）With circulating pump（73）Connection, the circulating pump（73）It is connected to second and changes cold drawing
Block（12）With frozen water entrance（31）Between water pipe（5）On, the temperature sensor（6）It is arranged on first and changes cold drawing block（11）、
Second changes cold drawing block（12）Frozen water import and export, the converter（74）According to temperature sensor（6）The temperature adjustment of measurement
Circulating pump（73）Pump-out.
6. liquid nitrogen cold air retracting device according to claim 5, it is characterised in that including attemperater（9）, the insulation
Water tank（9）It is divided into into water casing and water outlet casing, the water inlet casing is connected to frozen water entrance（31）And circulating pump（73）Between
Water pipe（5）On, the water inlet casing is provided with water supplement port（91）, the water outlet casing is connected to first and changes cold drawing block（11）And ice
Water out（32）Water pipe on, water inlet casing and the frozen water entrance（31）Between water pipe（5）Upper, the water outlet casing and ice
Water out（32）Between water pipe（5）On be equipped with temperature sensor（6）.
7. liquid nitrogen cold air retracting device according to claim 1, it is characterised in that described to change cold drawing block（1）Including blowdown
The mouth of pipe（15）And blowoff valve（16）, the end-of-the-pipe（15）One end and frozen water passage（14）Connection, its other end and blowoff valve
（16）Connection.
8. liquid nitrogen cold air retracting device according to claim 1, it is characterised in that described to change cold drawing block（1）Frozen water lead to
Road（14）With liquid nitrogen passage（13）It is bilayer and changes cold drawing structure, the bilayer is changed cold drawing liquid nitrogen passage and welded once using laser half
Welding fabrication.
9. a kind of cold air recycling and control method, it is characterised in that comprise the following steps：
A. electric flow control valve is opened, liquid nitrogen is entered and full of nitrogen pipe and liquid nitrogen passage from liquid nitrogen entrance；
B. open the circulation pump, water is entered and full of water pipe and frozen water passage from frozen water entrance；
C. the temperature inductor on water pipe measures tube wall temperature value, and the temperature value of measurement is delivered to converter, converter control
The flow of circulating pump processed.
10. cold air recycling and control method according to claim 9, it is characterised in that the step C includes：
C1. the temperature inductor of water outlet measures the temperature value of tube wall, if temperature value is not less than zero degree, temperature value is transmitted
To temperature difference inductor, and keep constant amount of water or subtract signal transmission to converter, Frequency Converter Control circulating pump by controller
Few water yield；If the close zero degree of temperature value, temperature value is passed to temperature difference inductor, and change is given signal transmission by controller
Frequency device, the Frequency Converter Control circulating pump increase water yield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611117840.1A CN106679263A (en) | 2016-12-07 | 2016-12-07 | Liquid nitrogen cooling capacity recycling device and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611117840.1A CN106679263A (en) | 2016-12-07 | 2016-12-07 | Liquid nitrogen cooling capacity recycling device and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106679263A true CN106679263A (en) | 2017-05-17 |
Family
ID=58868669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611117840.1A Pending CN106679263A (en) | 2016-12-07 | 2016-12-07 | Liquid nitrogen cooling capacity recycling device and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106679263A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458780A (en) * | 2018-11-12 | 2019-03-12 | 辽宁工业大学 | A kind of liquid nitrogen vaporization cold recycling device |
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| EP1429096A2 (en) * | 2002-12-11 | 2004-06-16 | Messer Griesheim GmbH | Cryogenic liquefied gas supply system with enthalpy control |
| CN1963347A (en) * | 2006-11-21 | 2007-05-16 | 华南理工大学 | Method for using cooling capacity of LNG with cooling media as medium and apparatus thereof |
| CN201463439U (en) * | 2009-08-03 | 2010-05-12 | 中国科学院广州能源研究所 | Device for recycling vaporized latent heat of low boiling point liquid matter |
| CN101796356A (en) * | 2008-05-28 | 2010-08-04 | 大阳日酸株式会社 | Refrigerant cooler |
| CN204830627U (en) * | 2015-08-06 | 2015-12-02 | 哈尔滨黎明气体有限公司 | Cold cyclic utilization device of measuring of empty cryogenic liquids of branch gasification |
| CN105333664A (en) * | 2014-07-30 | 2016-02-17 | 北大方正集团有限公司 | Chilled water treatment device and system |
-
2016
- 2016-12-07 CN CN201611117840.1A patent/CN106679263A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1429096A2 (en) * | 2002-12-11 | 2004-06-16 | Messer Griesheim GmbH | Cryogenic liquefied gas supply system with enthalpy control |
| CN1963347A (en) * | 2006-11-21 | 2007-05-16 | 华南理工大学 | Method for using cooling capacity of LNG with cooling media as medium and apparatus thereof |
| CN101796356A (en) * | 2008-05-28 | 2010-08-04 | 大阳日酸株式会社 | Refrigerant cooler |
| CN201463439U (en) * | 2009-08-03 | 2010-05-12 | 中国科学院广州能源研究所 | Device for recycling vaporized latent heat of low boiling point liquid matter |
| CN105333664A (en) * | 2014-07-30 | 2016-02-17 | 北大方正集团有限公司 | Chilled water treatment device and system |
| CN204830627U (en) * | 2015-08-06 | 2015-12-02 | 哈尔滨黎明气体有限公司 | Cold cyclic utilization device of measuring of empty cryogenic liquids of branch gasification |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458780A (en) * | 2018-11-12 | 2019-03-12 | 辽宁工业大学 | A kind of liquid nitrogen vaporization cold recycling device |
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Application publication date: 20170517 |