CN106288082A - A kind of industry liquid nitrogen cold recovery system - Google Patents
A kind of industry liquid nitrogen cold recovery system Download PDFInfo
- Publication number
- CN106288082A CN106288082A CN201610711859.2A CN201610711859A CN106288082A CN 106288082 A CN106288082 A CN 106288082A CN 201610711859 A CN201610711859 A CN 201610711859A CN 106288082 A CN106288082 A CN 106288082A
- Authority
- CN
- China
- Prior art keywords
- recovery system
- cold energy
- cold
- energy recovery
- liquid nitrogen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
- F17C7/02—Discharging liquefied gases
- F17C7/04—Discharging liquefied gases with change of state, e.g. vaporisation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F2005/0039—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using a cryogen, e.g. CO2 liquid or N2 liquid
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Abstract
The present invention provides a kind of industry liquid nitrogen cold recovery system, including: liquid nitrogen container, the first cold energy recovery system, the second cold energy recovery system, water storage device and carburator, described liquid nitrogen container is connected to described carburator by the first cold energy recovery system, one end of described first cold energy recovery system is connected with described second cold energy recovery system by water pipe, and the other end of described first cold energy recovery system is connected with described second cold energy recovery system by water storage device；Wherein, described first cold energy recovery system realizes lowering the temperature the liquid in water pipe for being reclaimed by cold air, and air is converted to cold empty wind by the liquid after described second cold energy recovery system is used for by cooling.The present invention is by reclaiming the cold that liquid nitrogen vaporization produces, it is possible to save air conditioning electricity, as long as needing the applied environment of uniform temperature and humidity requirement or needing the enterprise of long-term refrigeration, production procedure can be optimized by the present invention, reduce production cost, improve product quality, boost economic growth.
Description
Technical field
The present invention relates to a kind of recovery system, particularly relate to a kind of industry liquid nitrogen cold recovery system.
Background technology
The liquid nitrogen i.e. nitrogen of liquid condition.Liquid nitrogen can be produced by special equipment, it is also possible to is producing the process of liquid oxygen
Middle obtain as side-product.Liquid nitrogen has the lowest temperature, and its boiling point is-195.8 DEG C, can serve as deep cooling agent.Liquid nitrogen is also
Gaseous state can be become from liquid, become nitrogen, can be passed through in heat-treatment furnace as protective gas.In atmosphere, shared by nitrogen
Ratio maximum.
Needing substantial amounts of nitrogen in electron trade, main uses is voltage gas, large-scale integrated in filling short-circuiting device
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 that the electrical equipments such as punching produce.Although liquid nitrogen is extensively applied in electron trade, but current most enterprises is all
Using carburator to gasify liquid nitrogen, carburator is a kind of equipment that the gas of a kind of liquid is converted into gaseous atmospheres；?
During current liquid nitrogen gasification, a large amount of colds are directly discharged in air, and these colds are not fully utilized, and
And carburator is that the coefficient of heat transfer of air is little by air and liquid nitrogen heat exchange.
Summary of the invention
The technical problem to be solved be need provide one can be by reasonable for energy produced by liquid nitrogen vaporization
Reclaim the industrial liquid nitrogen cold recovery system of getting up.
To this, the present invention provides a kind of industry liquid nitrogen cold recovery system, including: liquid nitrogen container, the first cold energy recovery system,
Second cold energy recovery system, water storage device and carburator, described liquid nitrogen container is connected to described vapour by the first cold energy recovery system
Changing device, one end of described first cold energy recovery system is connected with described second cold energy recovery system by water pipe, and described first
The other end of cold energy recovery system is connected with described second cold energy recovery system by water storage device；Wherein, described first cold
Can recovery system realize lowering the temperature the liquid in water pipe for being reclaimed by cold air, described second cold energy recovery system is used for
By the liquid after cooling, air is converted to cold empty wind.
Further improvement of the present invention is, also includes the first electric flow control valve, and the outfan of described liquid nitrogen container leads to
Cross the first electric flow control valve and be connected to the input of described first cold energy recovery system.
Further improvement of the present invention is, also includes controlling flow bypass, and the outfan of described liquid nitrogen container is by controlling
Flow bypass is connected to the input of described carburator.
Further improvement of the present invention is, the bypass of described control flow includes the second electric flow control valve.
Further improvement of the present invention is, in described water pipe, flowing is saline.
Further improvement of the present invention is, is provided with water intaking valve, outlet valve, air intake in described second cold energy recovery system
Pipe and discharge pipe, described water intaking valve is connected with described water storage device, and described outlet valve is returned with described second cold energy by water pipe
Receipts system is connected.
Further improvement of the present invention is, described first cold energy recovery system also includes the first controller, the first temperature
Sensor and the second temperature sensor, described first temperature sensor is arranged at the water inlet of described first cold energy recovery system
Place, described second temperature sensor is arranged at the water outlet of described first cold energy recovery system, described first temperature sensor
The temperature data gathered with the second temperature sensor is transferred to described first controller.
Further improvement of the present invention is, described first cold energy recovery system also includes water circulating pump and converter, institute
Stating water circulating pump and be arranged at the water inlet of described first cold energy recovery system, described first controller is connected to by converter
Described water circulating pump.
Further improvement of the present invention is, described second cold energy recovery system also includes three-temperature sensor and the 4th
Temperature sensor, described three-temperature sensor is arranged in the tube wall of described blast pipe, and described 4th temperature sensor is arranged
In the tube wall of described discharge pipe.
Further improvement of the present invention is, described second cold energy recovery system also includes second controller and air-valve, institute
Stating air-valve and be respectively arranged at described blast pipe and discharge pipe, described three-temperature sensor and the 4th temperature sensor are gathered
Temperature data is transferred to described second controller, and then controls the air force of described air-valve.
Compared with prior art, the beneficial effects of the present invention is: by reclaiming the cold that liquid nitrogen vaporization produces, meet sky
The sub-load adjusted, saves air conditioning electricity, as long as needing the applied environment of uniform temperature and humidity requirement or needing long
The enterprise of phase refrigeration, by the present invention to the cold recovery of liquid nitrogen and Appropriate application, it is possible to optimize its production procedure, reduce raw
Produce cost, improve product quality, and the efficiency that boosts economic growth.
Accompanying drawing explanation
Fig. 1 is the system structure schematic diagram of an embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the preferably embodiment of the present invention is described in further detail.
As it is shown in figure 1, this example provides a kind of industry liquid nitrogen cold recovery system, including: liquid nitrogen container the 1, first cold energy reclaims
System the 2, second cold energy recovery system 3, water storage device 4 and carburator 5, described liquid nitrogen container 1 is by the first cold energy recovery system 2 even
Being connected to described carburator 5, water pipe 8 and described second cold energy recovery system 3 phase are passed through in one end of described first cold energy recovery system 2
Connecting, the other end of described first cold energy recovery system 2 is connected with described second cold energy recovery system 3 by water storage device 4；
Wherein, described first cold energy recovery system 2 realizes lowering the temperature the liquid in water pipe 8 for being reclaimed by cold air, and described the
Air is converted to cold empty wind by the liquid after two cold energy recovery systems 3 are used for by cooling.
As it is shown in figure 1, this example also includes the first electric flow control valve 6 and controls flow bypass, described liquid nitrogen container 1 defeated
Go out end and be connected to the input of described first cold energy recovery system 2 by the first electric flow control valve 6；Described liquid nitrogen container 1
Outfan is connected to the input of described carburator 5 by controlling flow bypass, and the bypass of described control flow preferably includes second
Electric flow control valve 7.
In order to meet the change of workload demand, install the first electric flow in the porch of the first cold energy recovery system 2 additional and adjust
Joint valve 6 and control flow bypass, when load has fluctuation, the first electric flow control valve 6 and the second electric flow control valve 7 can
To regulate the flow of liquid nitrogen, to control the generation amount of cold, using simultaneously need to meet workshop nitrogen, this example can be according to reality
Need to arrange the second electric flow control valve 7 in the bypass of auto-adjustment control flow, the most when the load is high, liquid nitrogen can be strengthened
Flow, the chilling requirement to meet；When the load is low, by reducing the flow of liquid nitrogen, the cold of generation also subtracts with regard to corresponding
Few, just meet refrigeration consumption during underload, the most i.e. can meet load fluctuation, simultaneously can also be by controlling by flow
Second electric flow control valve 7 on road meets workshop gas demand.
In water pipe 8 described in this example, flowing is saline, described first cold energy recovery system 2 and the second cold energy recovery system 3
Being preferably heat exchanger, this example utilizes liquid nitrogen and saline to carry out heat exchange in high-performance heat exchanger, and liquid nitrogen is at the first cold energy recovery system 2
The heat vaporization of middle absorption saline, and the freezing point of saline is relatively low, reduces in the first mesohalobic temperature of cold energy recovery system 2,
Production line delivered to by the heat exchanger that vaporized nitrogen flows out the first cold energy recovery system 2 at ambient pressure with certain flow velocity and temperature
Use gas point；Meanwhile, the saline of low temperature takes away the heat in workshop air by the heat exchanger of the second cold energy recovery system 3 again,
Thus reaching refrigeration, cold produced by this example can substitute air-conditioning completely and use.
As it is shown in figure 1, the second cold energy recovery system 3 described in this example is provided with water intaking valve 9, outlet valve 10, blast pipe 11
With discharge pipe 12, described water intaking valve 9 is connected with described water storage device 4, and described outlet valve 10 is second cold with described by water pipe 8
Can recovery system 3 be connected.Water intaking valve 9 described in this example and outlet valve 10 are preferably ball valve.
As it is shown in figure 1, the first cold energy recovery system 2 described in this example also include the first controller, the first temperature sensor 14,
Second temperature sensor 15, water circulating pump 13 and converter, described first temperature sensor 14 is arranged at described first cold energy and returns
The water inlet of receipts system 2, described second temperature sensor 15 is arranged at the water outlet of described first cold energy recovery system 2,
The temperature data that described first temperature sensor 14 and the second temperature sensor 15 are gathered is transferred to described first controller；Institute
Stating water circulating pump 13 and be arranged at the water inlet of described first cold energy recovery system 2, described first controller is by converter even
It is connected to described water circulating pump 13.
It is noted that be directed to the problem that liquid nitrogen temperature is too low, such as liquid nitrogen is during liquid becomes gaseous state
Absorbing the heat of saline, water release thermal temperature reduces, and goes out for preventing the temperature of water to be reduced to subzero during this
Existing tube wall icing phenomenon, increases by one in this example and controls loop, i.e. by the first temperature sensor 14 and the second temperature sensing
Tube wall temperature value measured by device 15, and the first temperature sensor 14 and the second temperature sensor 15 are arranged in the first cold energy and reclaim system
The water inlet of system 2 and water outlet, because the temperature of water outlet is minimum, so in actual applications, principal security water outlet
The temperature value of the second temperature sensor 15 at Kou is not less than zero degree, the first temperature sensor 14 and the second temperature sensing
The measured value of device 15 passes to the first controller and then signal is passed to converter, by Frequency Converter Control water circulating pump 13
Flow, if tube wall temperature is reduced to, close to zero degree, just be increased the flow of water by this control loop, thus reach tube wall temperature
The purpose that degree rises, because the heat of certain liquid nitrogen flow vaporization absorption is constant, according to law of conservation of energy, increases water
Flow, the difference variation value of water reduces, and what i.e. the temperature of water reduced lacks, so that it may prevent tube wall icing phenomenon.
As it is shown in figure 1, the second cold energy recovery system 3 described in this example also includes that three-temperature sensor the 16, the 4th temperature passes
Sensor 17, second controller and air-valve 18, described three-temperature sensor 16 is arranged in the tube wall of described blast pipe 11, described
4th temperature sensor 17 is arranged in the tube wall of described discharge pipe 12；Described air-valve 18 is respectively arranged at described blast pipe 11 He
Discharge pipe 12, the temperature data that described three-temperature sensor 16 and the 4th temperature sensor 17 are gathered is transferred to described second
Controller, and then control the air force of described air-valve 18.
The control process of this example is preferably as follows: first arrange standard temperature value according to by cold demand, this standard temperature value
Can be configured according to actual needs；Then by first temperature sensor the 14, second temperature sensor the 15, the 3rd temperature sensing
One or more actual temperatures that device 16 and the 4th temperature sensor 17 gather convey to PLC system or control centre, such as the
One controller and second controller；When temperature exceedes the standard temperature value of setting, control the first electric flow of brine flow
Valve 6 fully opens, the second electric flow control valve 7 completely closes in regulation；When temperature is less than or equal to standard temperature value, control
First electric flow control valve 6 of brine flow can be according to concrete less than how many regulation closedown ratio, simultaneously the second electric flows
Regulation valve 7 can regulate unlatching ratio, as this close ratio and open ratio, the most according to actual needs and cooling
Speed is configured and adjusts.
This example, by reclaiming the cold that liquid nitrogen vaporization produces, meets the sub-load of air-conditioning, saves air conditioning electricity, for only
Uniform temperature to be needed and the applied environment of humidity requirement or need the enterprise of long-term refrigeration, by the present invention to liquid nitrogen
Cold recovery and Appropriate application, it is possible to optimize its production procedure, reduce production cost, improves product quality, and promotes economic increasing
Long efficiency.
Above content is to combine concrete preferred implementation further description made for the present invention, it is impossible to assert
Being embodied as of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of present inventive concept, it is also possible to make some simple deduction or replace, all should be considered as belonging to the present invention's
Protection domain.
Claims (10)
1. an industrial liquid nitrogen cold recovery system, it is characterised in that including: liquid nitrogen container, the first cold energy recovery system, second cold
Energy recovery system, water storage device and carburator, described liquid nitrogen container is connected to described carburator, institute by the first cold energy recovery system
The one end stating the first cold energy recovery system is connected with described second cold energy recovery system by water pipe, and described first cold energy reclaims
The other end of system is connected with described second cold energy recovery system by water storage device；Wherein, described first cold energy reclaims system
System realizes lowering the temperature the liquid in water pipe for being reclaimed by cold air, and described second cold energy recovery system is for by cooling
After liquid air is converted to cold empty wind.
Industry liquid nitrogen cold recovery system the most according to claim 1, it is characterised in that also include that the first electric flow is adjusted
Joint valve, the outfan of described liquid nitrogen container is connected to the input of described first cold energy recovery system by the first electric flow control valve
End.
Industry liquid nitrogen cold recovery system the most according to claim 1, it is characterised in that also include controlling flow bypass,
The outfan of described liquid nitrogen container is connected to the input of described carburator by controlling flow bypass.
Industry liquid nitrogen cold recovery system the most according to claim 3, it is characterised in that the bypass of described control flow includes
Second electric flow control valve.
5. according to the industrial liquid nitrogen cold recovery system described in Claims 1-4 any one, it is characterised in that described water pipe
Middle flowing is saline.
6. according to the industrial liquid nitrogen cold recovery system described in Claims 1-4 any one, it is characterised in that described second
Being provided with water intaking valve, outlet valve, blast pipe and discharge pipe in cold energy recovery system, described water intaking valve is connected with described water storage device
Connecing, described outlet valve is connected with described second cold energy recovery system by water pipe.
Industry liquid nitrogen cold recovery system the most according to claim 6, it is characterised in that described first cold energy recovery system
Also include that the first controller, the first temperature sensor and the second temperature sensor, described first temperature sensor are arranged at described
The water inlet of the first cold energy recovery system, described second temperature sensor is arranged at the water outlet of described first cold energy recovery system
At Kou, the temperature data that described first temperature sensor and the second temperature sensor are gathered is transferred to described first controller.
Industry liquid nitrogen cold recovery system the most according to claim 7, it is characterised in that described first cold energy recovery system
Also include that water circulating pump and converter, described water circulating pump are arranged at the water inlet of described first cold energy recovery system, described
First controller is connected to described water circulating pump by converter.
Industry liquid nitrogen cold recovery system the most according to claim 6, it is characterised in that described second cold energy recovery system
Also including three-temperature sensor and the 4th temperature sensor, described three-temperature sensor is arranged at the tube wall of described blast pipe
In, described 4th temperature sensor is arranged in the tube wall of described discharge pipe.
Industry liquid nitrogen cold recovery system the most according to claim 9, it is characterised in that described second cold energy reclaims system
System also includes that second controller and air-valve, described air-valve are respectively arranged at described blast pipe and discharge pipe, and described 3rd temperature passes
The temperature data that sensor and the 4th temperature sensor are gathered is transferred to described second controller, and then controls the wind of described air-valve
Amount size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610711859.2A CN106288082A (en) | 2016-08-23 | 2016-08-23 | A kind of industry liquid nitrogen cold recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610711859.2A CN106288082A (en) | 2016-08-23 | 2016-08-23 | A kind of industry liquid nitrogen cold recovery system |
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| CN106288082A true CN106288082A (en) | 2017-01-04 |
Family
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| CN201610711859.2A Pending CN106288082A (en) | 2016-08-23 | 2016-08-23 | A kind of industry liquid nitrogen cold recovery system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449199A (en) * | 2017-07-27 | 2017-12-08 | 苏州吉云新材料技术有限公司 | A kind of energy-saving cryogenic energy utilization system |
| CN107741172A (en) * | 2017-11-10 | 2018-02-27 | 清华大学 | Compressed air cold energy reclamation device and its application method |
| WO2019032050A1 (en) * | 2017-08-07 | 2019-02-14 | Sp Innovation Pte. Ltd. | Method and system for cold energy recovery |
| CN112206905A (en) * | 2020-09-07 | 2021-01-12 | 杭州电子科技大学 | Method and device for ultramicro treatment of bioactive substances |
| CN116499151A (en) * | 2023-06-28 | 2023-07-28 | 广州广钢气体能源股份有限公司 | Cold energy recycling system and recycling method thereof |
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| WO2019032050A1 (en) * | 2017-08-07 | 2019-02-14 | Sp Innovation Pte. Ltd. | Method and system for cold energy recovery |
| CN107741172A (en) * | 2017-11-10 | 2018-02-27 | 清华大学 | Compressed air cold energy reclamation device and its application method |
| CN112206905A (en) * | 2020-09-07 | 2021-01-12 | 杭州电子科技大学 | Method and device for ultramicro treatment of bioactive substances |
| CN116499151A (en) * | 2023-06-28 | 2023-07-28 | 广州广钢气体能源股份有限公司 | Cold energy recycling system and recycling method thereof |
| CN116499151B (en) * | 2023-06-28 | 2023-09-26 | 广州广钢气体能源股份有限公司 | Cold energy recycling system and recycling method thereof |
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