CN111238112A - Liquid nitrogen gasification treatment and cold energy recovery system - Google Patents
Liquid nitrogen gasification treatment and cold energy recovery system Download PDFInfo
- Publication number
- CN111238112A CN111238112A CN202010037153.9A CN202010037153A CN111238112A CN 111238112 A CN111238112 A CN 111238112A CN 202010037153 A CN202010037153 A CN 202010037153A CN 111238112 A CN111238112 A CN 111238112A
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- Prior art keywords
- liquid nitrogen
- gasification
- water
- pipe
- cold
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D5/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation
- F28D5/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation in which the evaporating medium flows in a continuous film or trickles freely over the conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F25/02—Component parts of trickle coolers for distributing, circulating, and accumulating liquid
- F28F25/06—Spray nozzles or spray pipes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Geometry (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
The application relates to a liquid nitrogen gasification treatment and cold recovery system. The application discloses liquid nitrogen gasification's processing and cold volume recovery system includes: the gasifier, the fins, the water return pipe, the water delivery pipe and the power pump; a plurality of the fin vertically sets up on the vaporizer, the one end of conveyer pipe with the power pump is connected, and the other end is placed the top of fin, the one end of wet return with the power pump is connected, and the other end setting is in the below of fin. The liquid nitrogen gasification treatment and cold energy recovery system has the advantages of saving energy and well ensuring the gasification of liquid nitrogen.
Description
Technical Field
The application relates to a liquid nitrogen gasification system, in particular to a treatment and cold recovery system for liquid nitrogen gasification.
Background
When liquid nitrogen in the existing liquid nitrogen tank is gasified, the liquid nitrogen tank is connected with the gasifier through a pipeline, the gasification is carried out in the gasifier, and the liquid nitrogen absorbs the heat of the surrounding air in the gasification process, so that thick ice blocks are formed on the surface of the gasifier, the surface of the gasifier is wrapped, and the pipeline conveyed out by the liquid nitrogen tank is also wrapped with columnar thick ice blocks. Being encapsulated by ice can affect the gasification efficiency of the gasifier and affect the performance and life of the gasifier.
Disclosure of Invention
Based on this, it is an object of the present application to provide a process and cold recovery system for liquid nitrogen gasification having advantages of improving the refrigeration effect of the gasifier and recovering and utilizing cold.
One aspect of the application provides a liquid nitrogen gasification treatment and cold energy recovery system, which comprises a gasifier, fins, a water return pipe, a water delivery pipe and a power pump;
a plurality of the fin vertically sets up on the vaporizer, the one end of conveyer pipe with the power pump is connected, and the other end is placed the top of fin, the one end of wet return with the power pump is connected, and the other end setting is in the below of fin.
According to the liquid nitrogen gasification treatment and cold energy recovery system, on one hand, normal-temperature or warm water is sent out to the upper part of the fins through the water return pipe so as to absorb heat of the fins and accelerate cold energy on the fins to be taken away; on the other hand, water flowing down from the fins enters the water conveying pipe and then circulates to the water return pipe through the power pump, so that the water is circulated and reused. Not only is energy-saving realized, but also the heat dissipation of the liquid nitrogen during gasification in the gasifier is accelerated, thereby accelerating the gasification.
Further, the air energy air conditioner is further included and arranged on the conveying pipe.
Further, a plurality of fins are arranged on the outer side of the gasifier in a surrounding mode, and the fins are arranged in a pairwise interval mode.
Further, the gasifier comprises a plurality of sections of coil pipes which are sequentially connected to form a plurality of layers of pipe systems;
the fins are distributed on the surface of the coil in a divergent mode.
Further, the fins are arranged on the first layer of the coil pipes, and the ends of the water conveying pipes are located above the first layer of the coil pipes.
Further, the spraying device also comprises a spraying head, the spraying head is arranged at the end of the water conveying pipe, the spraying head is placed at the fin, and the outlet of the spraying head faces the surface of the fin.
Further, the outlet of the spray header is in a strip shape.
Further, the gasifier also comprises a connecting pipe and a water collecting tank, wherein one end of the connecting pipe is connected with the gasifier; the water collecting tank is arranged below the connecting pipe; one end of the water return pipe is communicated with the bottom of the water collecting tank.
Further, the connecting pipe is located above the water collecting tank and is arranged in the water collecting tank.
Further, the device also comprises a regulating valve which is arranged on the conveying pipe.
For a better understanding and practice, the present application is described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a front view of an exemplary liquid nitrogen gasification process and cold recovery system of the present application;
FIG. 2 is a schematic perspective view of an exemplary liquid nitrogen gasification process and cold recovery system of the present application;
fig. 3 is a schematic diagram of the operation of an exemplary liquid nitrogen gasification process and cold recovery system of the present application.
Detailed Description
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the present application. In the description of the present application, "a plurality" means two or more unless otherwise specified.
FIG. 1 is a front view of an exemplary liquid nitrogen gasification process and cold recovery system of the present application; FIG. 2 is a schematic perspective view of an exemplary liquid nitrogen gasification process and cold recovery system of the present application; fig. 3 is a schematic diagram of the operation of an exemplary liquid nitrogen gasification process and cold recovery system of the present application.
Referring to fig. 1 and 2 in conjunction with fig. 3, an exemplary liquid nitrogen gasification treatment and refrigeration capacity recovery system of the present application includes a gasifier 10, fins 20, a water return pipe 30, a water pipe 40, and a power pump 50;
the fins 20 are longitudinally arranged on the gasifier 10, one end of the conveying pipe is connected with the power pump 50, the other end of the conveying pipe is arranged above the fins 20, one end of the water return pipe 30 is connected with the power pump 50, and the other end of the water return pipe is arranged below the fins 20.
In some preferred embodiments, an air-energy conditioner 60 is further included, the air-energy conditioner 60 being disposed on the duct.
In some preferred embodiments, a plurality of fins 20 are circumferentially disposed outside the gasifier 10 and are spaced two by two.
In some preferred embodiments, the gasifier 10 comprises a plurality of sections of coiled tubing connected in series and forming a plurality of layers of piping;
a plurality of said fins 20 are distributed divergently over the surface of said coil.
In some further embodiments, an edge of the fin 20 is fixed to the coil of the vaporizer 10, and the other side of the fin faces the outside of the coil, and the plurality of fins 20 are disposed around the coil and form an included angle with each other, such that the plurality of fins 20 are divergent with respect to the coil, such that there is enough space between the fins 20, such that the contact area between the fins 20 and the ambient air is large, the cooling capacity of the vaporizer 10 is fully diffused to the fins 20, and as much heat as possible is extracted from the fins 20, such that the liquid nitrogen in the vaporizer 10 is fully vaporized.
In some preferred embodiments, the fins 20 are disposed on a first layer of the coils, and the ends of the water transport tubes 40 are above the first layer of the coils.
In some preferred embodiments, the water conveying pipe further comprises a spray header 41, the spray header 41 is arranged at the end of the water conveying pipe 40, the spray header 41 is placed at the fin 20, and the outlet of the spray header 41 faces the surface of the fin 20.
In some preferred embodiments, the outlet of the showerhead 41 is bar-shaped. Of course, the nozzle of the shower head 41 may be a shower head, so that the water flowing out from the shower head 41 is dispersedly sprayed, the contact area of the water with the vaporizer 10 and the fins 20 is larger, and the heat exchange is more sufficient.
In some preferred embodiments, a connection pipe 70 and a water collection tank 80 are further included, and one end of the connection pipe 70 is connected to the gasifier 10; the water collecting groove 80 is provided below the connection pipe 70; one end of the return pipe 30 is communicated with the bottom of the water collecting tank 80.
In some preferred embodiments, the connecting tube 70 is positioned above the sump 80 and is positioned within the sump 80.
In some preferred embodiments, a regulating valve (not shown) is further included, which is disposed on the delivery pipe. In some further embodiments, the regulating valve comprises a manually regulated gate valve, or an automatically regulated solenoid valve. The device also comprises a controller (not shown), and the controller adjusts the opening degree of the electromagnetic valve to realize the adjustment of the nitrogen amount of the liquid to be delivered.
In some preferred embodiments, an insulation layer (not shown) is further included, and the insulation layer is wrapped around the return pipe 30. The heat-insulating layer can be a heat-insulating cotton layer, so that the cold quantity of the cold water in the water return pipe 30 is ensured to be remained in the cold water as much as possible.
In some preferred embodiments, the water collection tank 80 includes a first water storage tank 81 and a second water storage tank 82. The second water storage tank 82 is disposed under the connection pipe 70, and the connection pipe 70 includes a horizontal section disposed in the second water storage tank 82 and a vertical section both ends of which are connected with the horizontal section and the liquid nitrogen tank 90, respectively. The first water storage tank 81 is disposed under the vaporizer 10 and the fins 20 to collect water flowing down the vaporizer 10 and the fins 20.
The working principle of the liquid nitrogen gasification treatment and cold recovery system is as follows:
fig. 3 is a schematic diagram illustrating the operation of an exemplary liquid nitrogen gasification process and cold recovery system of the present application.
Referring to fig. 1 and 2 in conjunction with fig. 3, the liquid nitrogen in the liquid nitrogen tank 90 is sent out through the connection pipe 70 with the gate valve opened. The longitudinal section of the connection pipe 70 is connected with the liquid nitrogen tank 90, the lateral section is transversely disposed, the second water storage tank 82 is disposed under the lateral section, and the lateral section of the connection pipe 70 is placed in the second water storage tank 82. The liquid nitrogen enters the coil of the vaporizer 10 after passing through the connecting pipe 70, sequentially flows through the plurality of sections of S-shaped coils, and is finally discharged, wherein the liquid nitrogen and the nitrogen have constant pressure in the whole process and are vaporized by absorbing the surrounding heat.
The circulating water flows out of the water pipe 40 and is sprayed from the spray header 41, the nozzle of the spray header 41 is in a bar shape, so that the sprayed water is spread in a flat shape, flows down from the top of the gasifier 10, is sprayed on the coil and the fins 20, is sprayed on the coil and the fins of the first layer, and then falls into the first water storage tank 81, a large amount of collected water is stored in the first water storage tank 81 and the second water storage tank 82, and covers the lateral section of the connection pipe 70. And part of collected water is sent out through a water return pipe. Whole drenching and the in-process of catchmenting, connecting pipe 70 is covered by water to carry out the precooling to the liquid nitrogen that connecting pipe 70 carried, carry the liquid nitrogen to vaporizer 10 when absorbing heat on every side, accelerated thermal absorption through the drenching, and prevented vaporizer 10 parcel ice-cube, promoted the liquid nitrogen and absorbed heat from the surrounding environment, when the cold volume was taken away to the drenching, also provided the heat. Therefore, in the whole liquid nitrogen gasification process, ice blocks are not formed on the pipeline and the gasifier 10 any more, and the gasification effect of the liquid nitrogen is fully guaranteed.
In addition, the recovery system of this application, the water after the cooling can carry out recycle, carries out abundant recovery and recycle to cold volume.
Among them, the working principle of the energy recovery cycle of the present exemplary air energy air conditioner 60: the compressor pressurizes the refrigerant liquid, make the temperature of refrigerant liquid rise when the pressurization, the catchment in first aqua storage tank 81 and the second aqua storage tank 82, the lower cold water of temperature that carries through wet return 30, with the refrigerant liquid heat transfer cooling of high temperature, make the refrigerant liquid be in high pressure low temperature state, then through choke valve or other components, make the refrigerant liquid throttle inflation and gasification, volume expansion and temperature reduce rapidly when gasification, thereby provide the cold volume of air conditioner. And the cold water after heat exchange with the high-temperature refrigerant liquid is changed into normal-temperature water or water with a temperature higher than the normal temperature, and is sent out to the fins 20 through the water conveying pipe 40. The heat of the water delivered from the water delivery pipe 40 is supplied to the vaporizer 10, so that the liquid nitrogen in the vaporizer 10 is heated to sufficiently vaporize the liquid nitrogen.
In order to better ensure the gasification of the liquid nitrogen, a plurality of gasifiers 10 can be arranged, and a plurality of water conveying pipes 40 are correspondingly arranged, so that the gasification speed is increased.
The application of processing and cold volume recovery system of liquid nitrogen gasification, when fully guaranteeing the gasification effect of liquid nitrogen, cold volume when gasifying the liquid nitrogen also obtains fully retrieving, retrieves the warm water that produces behind the cold volume through the air energy air conditioner, utilizes the heat of warm water. In the whole process, the energy is fully recycled and utilized, and the air energy air conditioner 60 is adopted, so that the energy conservation is realized. Therefore, the energy saving effect of the whole system is remarkable.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.
Claims (10)
1. The liquid nitrogen gasification treatment and cold energy recovery system is characterized in that: comprises a gasifier, fins, a water return pipe, a water delivery pipe and a power pump;
a plurality of the fin vertically sets up on the vaporizer, the one end of conveyer pipe with the power pump is connected, and the other end is placed the top of fin, the one end of wet return with the power pump is connected, and the other end setting is in the below of fin.
2. The system for the gasification of liquid nitrogen for the treatment and recovery of cold energy according to claim 1, characterized in that: still include the air can the air conditioner, this air can the air conditioner setting on the conveyer pipe.
3. The system for the gasification of liquid nitrogen for the treatment and recovery of cold energy according to claim 2, characterized in that: the fins are arranged on the outer side of the gasifier in a surrounding mode and are arranged at intervals in pairs.
4. The system for the gasification of liquid nitrogen for the treatment and recovery of cold energy according to claim 3, characterized in that: the gasifier comprises a plurality of sections of coil pipes which are sequentially connected to form a plurality of layers of pipe systems;
the fins are distributed on the surface of the coil in a divergent mode.
5. The system for the gasification of liquid nitrogen for the recovery of cold according to claim 4, characterized in that: the fins are arranged on the first layer of the coil pipes, and the ends of the water conveying pipes are positioned above the first layer of the coil pipes.
6. The system for the gasification of liquid nitrogen for the recovery of cold according to claim 5, characterized in that: the spray header is arranged at the end of the water conveying pipe, the spray header is placed at the fin, and an outlet of the spray header faces the surface of the fin.
7. The system for the gasification of liquid nitrogen for the recovery of cold energy according to claim 6, characterized in that: the outlet of the spray header is strip-shaped.
8. A system for the treatment and cold recovery of the gasification of liquid nitrogen according to any of claims 1 to 7, characterized in that: the gasifier also comprises a connecting pipe and a water collecting tank, wherein one end of the connecting pipe is connected with the gasifier; the water collecting tank is arranged below the connecting pipe; one end of the water return pipe is communicated with the bottom of the water collecting tank.
9. The system for the gasification of liquid nitrogen for the recovery of cold according to claim 8, characterized in that: the connecting pipe is positioned above the water collecting tank and is arranged in the water collecting tank.
10. The system for the gasification of liquid nitrogen for the recovery of cold according to claim 8, characterized in that: the device also comprises a regulating valve which is arranged on the conveying pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010037153.9A CN111238112A (en) | 2020-01-14 | 2020-01-14 | Liquid nitrogen gasification treatment and cold energy recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010037153.9A CN111238112A (en) | 2020-01-14 | 2020-01-14 | Liquid nitrogen gasification treatment and cold energy recovery system |
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| Publication Number | Publication Date |
|---|---|
| CN111238112A true CN111238112A (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010037153.9A Pending CN111238112A (en) | 2020-01-14 | 2020-01-14 | Liquid nitrogen gasification treatment and cold energy recovery system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2117959A1 (en) * | 1993-10-14 | 1995-04-15 | Daniel Delatte | Cryobiologic container |
| CN104567453A (en) * | 2013-10-12 | 2015-04-29 | 湖北浠水蓝天联合气体有限公司 | Liquid nitrogen cold energy recovering system |
| CN204594284U (en) * | 2015-04-28 | 2015-08-26 | 东莞高伟光学电子有限公司 | Utilize the cooling water generating means of liquid nitrogen vaporizer cold air |
| CN207422932U (en) * | 2017-11-20 | 2018-05-29 | 芜湖东旭光电科技有限公司 | Vaporizer cold recovery system |
| CN208457574U (en) * | 2018-04-16 | 2019-02-01 | 重庆国际复合材料股份有限公司 | A kind of air temperature gasifier cold recovery system |
-
2020
- 2020-01-14 CN CN202010037153.9A patent/CN111238112A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2117959A1 (en) * | 1993-10-14 | 1995-04-15 | Daniel Delatte | Cryobiologic container |
| CN104567453A (en) * | 2013-10-12 | 2015-04-29 | 湖北浠水蓝天联合气体有限公司 | Liquid nitrogen cold energy recovering system |
| CN204594284U (en) * | 2015-04-28 | 2015-08-26 | 东莞高伟光学电子有限公司 | Utilize the cooling water generating means of liquid nitrogen vaporizer cold air |
| CN207422932U (en) * | 2017-11-20 | 2018-05-29 | 芜湖东旭光电科技有限公司 | Vaporizer cold recovery system |
| CN208457574U (en) * | 2018-04-16 | 2019-02-01 | 重庆国际复合材料股份有限公司 | A kind of air temperature gasifier cold recovery system |
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Application publication date: 20200605 |