CN211120100U

CN211120100U - Integrated refrigerated lithium bromide refrigerator

Info

Publication number: CN211120100U
Application number: CN201921724172.8U
Authority: CN
Inventors: 杨忠民
Original assignee: Kunming Pulihui Energy Saving Technology Co ltd
Current assignee: Kunming Pulihui Energy Saving Technology Co ltd
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-07-28
Anticipated expiration: 2029-10-15

Abstract

An integrated cooled lithium bromide refrigerator comprising a condensing chamber; the condensation chamber comprises a first water storage tank positioned at the bottom, and a refrigerant vapor shell chamber and a refrigerant liquid shell chamber which are respectively positioned at two sides; the refrigerant vapor shell chamber and the refrigerant liquid shell chamber are connected through a first cooling tube bundle; a spray header is connected above the first cooling tube bundle; the spray header is connected with the first water storage tank through a first spray water pump; a first water collector is connected above the spray header; an air inlet is formed below the first cooling tube bundle of the condensation chamber; the top of the condensation chamber is connected with a first ventilator. The utility model relates to an integrated cooling system's lithium bromide refrigerator, the outer structure of lithium bromide refrigerator refrigerated condensation cooling part is walked by former refrigerant, changes into and walks intraductally, recycles the evaporation cooling principle, increases and sprays, ventilation structure, makes it need not external circulation water system, forms integrated cooling system's lithium bromide refrigerator.

Description

Integrated refrigerated lithium bromide refrigerator

Technical Field

The utility model relates to a lithium bromide refrigerator especially relates to with an integrated refrigerated lithium bromide refrigerator.

Background

A lithium bromide refrigerator, i.e. a lithium bromide absorption refrigerator, uses a lithium bromide aqueous solution as a working medium, wherein water is a refrigerant, and lithium bromide is an absorbent. Lithium bromide belongs to salts, is white crystal, is easily soluble in water and alcohol, is nontoxic, has stable chemical property and cannot deteriorate. When air exists in the lithium bromide water solution, the lithium bromide water solution has strong corrosivity to steel. The lithium bromide absorption refrigerator uses water as refrigerant, the evaporating temperature is above 0 deg.C, and it can only be used for air conditioning equipment and preparing cold water used in production process.

In the lithium bromide absorption refrigeration, because the boiling point of the lithium bromide aqueous solution is very high (1265 ℃), the lithium bromide aqueous solution is extremely difficult to volatilize, and therefore, the steam on the liquid surface of the lithium bromide saturated solution can be considered to be pure water steam; under a certain temperature, the water vapor saturation partial pressure on the liquid surface of the lithium bromide water solution is less than the saturation partial pressure of pure water; and the higher the concentration, the lower the partial pressure of water vapor saturation on the liquid surface. Therefore, the higher the concentration of the lithium bromide aqueous solution is, the stronger the capacity of absorbing moisture is under the same temperature condition. This is why lithium bromide is generally used as the absorbent and water as the refrigerant. The lithium bromide absorption refrigerator is mainly composed of a generator, a condenser, an evaporator, an absorber, a heat exchanger, a circulating pump and the like. In the operation process of the lithium bromide absorption refrigerator, when the lithium bromide water solution is heated by the heating medium water in the generator, the water in the solution is continuously vaporized; along with the continuous vaporization of water, the concentration of the lithium bromide aqueous solution in the generator is continuously increased and enters the absorber; the water vapor enters a condenser, is cooled by cooling water in the condenser and then is condensed to form high-pressure low-temperature liquid water; when the water in the condenser enters the evaporator through the throttle valve, the water expands rapidly to be vaporized, and absorbs a large amount of heat of the refrigerant water in the evaporator in the vaporization process, thereby achieving the purpose of cooling and refrigeration; in the process, low-temperature water vapor enters the absorber, is absorbed by the lithium bromide aqueous solution in the absorber, the concentration of the solution is gradually reduced, and then the solution is sent back to the generator by the circulating pump to complete the whole circulation. The circulation is not stopped, and the cold energy is continuously produced. Because the dilute lithium bromide solution has been cooled in the absorber, the temperature is lower, in order to save the heat of heating the dilute solution, improves the thermal efficiency of whole device, has increased a heat exchanger in the system, lets the high temperature concentrated solution that the generator flows out carry out the heat exchange with the dilute solution of low temperature that the absorber flows out, improves the temperature that the dilute solution got into the generator.

The lithium bromide absorption refrigerator is developed successfully in 1945, can utilize low-temperature heat energy and has a higher thermal coefficient (the thermal coefficient of a single stage is about 0.7), so the lithium bromide absorption refrigerator is developed quickly and is generally used for air conditioning and the like in some countries.

In the lithium bromide machine refrigeration system engineering, a circulating water system is required to be arranged for carrying out heat released in the cooling and absorption processes, the total heat is the sum of the heat released by regeneration and the heat released by refrigeration, the circulating water with large heat requirement is large, particularly, the energy efficiency ratio of some low-temperature hot water type refrigerating units is low, the required circulating water quantity is larger, and therefore external large circulating water cooling systems and power circulation are required, so that the total investment is increased, the operation cost is correspondingly increased, and the overall economy of the refrigerating units is poor; the integrated cooling lithium bromide refrigerator of the utility model does not need an external circulating water system, and can meet the operation requirement of the system only by providing a certain amount of water supplement; the whole construction cost of the system engineering is reduced, the consumption of the running electric power and the water source is greatly reduced, and the combined structure is adopted, so that the system can be integrally or separately arranged according to the application site, and the application is more flexible.

SUMMERY OF THE UTILITY MODEL

The utility model discloses it is exactly for solving and providing one kind only need provide an amount of moisturizing can satisfy the integrated refrigerated lithium bromide refrigerator technical problem of condensation chamber system operation.

In order to solve the above technical problem, the utility model relates to an integrated refrigerated lithium bromide refrigerator's technical solution does:

comprises an evaporation chamber, an absorption chamber connected with the evaporation chamber, a regeneration chamber connected with the absorption chamber, and a condensation chamber connected with the regeneration chamber; the condensation chamber is connected with the evaporation chamber; the absorption chamber is connected with the regeneration chamber through a heat exchanger, and the condensation chamber comprises a first water storage tank positioned at the bottom, and a refrigerant vapor shell chamber and a refrigerant liquid shell chamber which are respectively positioned at two sides; the refrigerant vapor shell chamber and the refrigerant liquid shell chamber are connected through a first cooling tube bundle; a spray header is connected above the first cooling tube bundle; the spray header is connected with the first water storage tank through a first spray water pump; a first water collector is connected above the spray header; an air inlet is formed below the first cooling tube bundle of the condensation chamber; the top of the condensation chamber is connected with a first ventilator; the side edge of the refrigerant steam shell chamber is provided with a first connecting port connected with the regeneration chamber; the side of the first water storage tank is connected with a first water replenishing pipeline.

And a first control valve is arranged on the first water replenishing pipeline.

The first cooling tube bundle is a transverse tube bundle.

The absorption chamber comprises a concentrated solution liquid distribution layer positioned at the upper part, an absorption dilute solution collection chamber positioned at the bottom and a second water storage tank; a liquid distribution absorption chamber is arranged below the concentrated solution liquid distribution layer; a second connecting port connected with the evaporation chamber is formed on the side edge of the liquid distribution absorption chamber; the liquid distribution absorption chamber is connected with the absorption dilute solution collection chamber through a second cooling tube bundle; a liquid film water distribution chamber is arranged at the upper end of the second cooling tube bundle; the liquid film water distribution chamber is connected with the second water storage tank through a second spray water pump; one side of a second cooling pipe bundle of the absorption chamber is provided with an air inlet, and the other side of the second cooling pipe bundle of the absorption chamber is connected with a second water collector; a second ventilator is connected above a second water collector of the absorption chamber; the side of the second water storage tank is connected with a second water replenishing pipeline; the second water collector is positioned above the second water storage tank.

And a second control valve is arranged on the second water replenishing pipeline.

The second cooling tube bundle is a vertical tube bundle.

The utility model discloses the technological effect that can reach is: the utility model relates to a lithium bromide refrigerator of integrated cooling system, the condensation cooling part that the lithium bromide refrigerator cools off is walked the outside of tubes structure by the former refrigerant, changes into and walks in the pipe, recycles the evaporation cooling principle, increases and sprays, ventilates the structure, makes it need not external circulating water system, forms the lithium bromide refrigerator of integrated cooling system; the cooling water is not required to be provided from the outside, the cost of the matching project of the refrigerating system can be greatly reduced, the consumption of electric energy and water source of the circulating water in the Ministry of China can be reduced, and the refrigerating system has important economic value and social value when applied to the refrigerating project.

Drawings

The invention will be described in further detail with reference to the following drawings and detailed description:

fig. 1 is a schematic structural diagram of an integrated cooling lithium bromide refrigerator according to the present invention;

FIG. 2 is a schematic diagram of a condensing chamber of an integrated cooling lithium bromide refrigerator according to the present invention;

FIG. 3 is a schematic diagram of an absorption chamber of an integrated cooled lithium bromide refrigerator according to the present invention;

figure 4 is a schematic view of the connection of one of the second cooling tube bundles to the liquid film distribution chamber.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

See fig. 1-4.

An integrated cooling lithium bromide refrigerator comprises an evaporation chamber 1, an absorption chamber 2 connected with the evaporation chamber 1, a regeneration chamber 3 connected with the absorption chamber 2, and a condensation chamber 4 connected with the regeneration chamber 3; the condensation chamber 4 is connected with the evaporation chamber 1; the absorption chamber 2 is connected with the regeneration chamber through a heat exchanger 5, and the condensation chamber 4 comprises a first water storage tank 11 positioned at the bottom, and a refrigerant vapor shell chamber 12 and a refrigerant liquid shell chamber 13 respectively positioned at two sides; the refrigerant gas shell chamber 12 and the refrigerant liquid shell chamber 13 are connected through a first cooling tube bundle 14; a spray header 15 is connected above the first cooling tube bundle 14; the spray header 15 is connected with the first water storage tank 11 through a first spray water pump 16; a first water collector 22 is connected above the spray header 15; an air inlet 17 is formed below the first cooling tube bundle 14 of the condensation chamber 4; the top of the condensation chamber 4 is connected with a first ventilator 18; the side edge of the refrigerant gas shell chamber 12 is provided with a first connecting port 19 connected with the regeneration chamber; a first water replenishing pipeline 20 is connected to the side of the first water storage tank 11.

Specifically, a first control valve 21 is arranged on the first water replenishing pipeline 20.

Specifically, the first cooling tube bundle 14 is a transverse tube bundle.

Specifically, the absorption chamber 2 comprises a concentrated solution distribution layer 31 positioned at the upper part, an absorption dilute solution collection chamber 32 positioned at the bottom part and a second water storage tank 33; a liquid distribution absorption chamber 34 is arranged below the concentrated solution liquid distribution layer 31; the side edge of the liquid distribution absorption chamber 34 is provided with a second connecting port 35 connected with the evaporation chamber 1; the liquid distribution absorption chamber 34 is connected with the absorption dilute solution collection chamber 32 through a second cooling tube bundle 36; a liquid film water distribution chamber 37 is arranged at the upper end of the second cooling tube bundle 36; the liquid film water distribution chamber 37 is connected with the second water storage tank 33 through a second spray water pump 38; an air inlet 39 is formed in one side of the second cooling tube bundle 36 of the absorption chamber 2, and a second water collector 40 is connected to the other side of the second cooling tube bundle; a second ventilator 41 is connected above a second water receiver 40 of the absorption chamber 2; a second water replenishing pipeline 42 is connected to the side edge of the second water storage tank 33; the second water receiver 40 is positioned above the second water storage tank 33.

Specifically, a second control valve 43 is arranged on the second water replenishing pipeline 42.

Specifically, the second cooling tube bundle 36 is a vertical tube bundle.

Description of the principle of use: the utility model changes the structure form of the condensation chamber 4 and the absorption chamber 2 of the lithium bromide through the brand new design; the original way of the refrigerant and the absorbent going out of the pipe and the way of the circulating cooling water going in the pipe are designed into the way of the refrigerant and the absorbent going in the pipe; the spraying and ventilating devices are added outside the pipe to form an evaporative cooling system, and an external circulating cooling water system is not needed, so that the overall construction cost is reduced, and the operation cost is reduced.

For the condensing chamber 4, the regenerated refrigerant is in a vapor state and only needs to be condensed into liquid, so that a parallel horizontal tube structure, namely a first cooling tube bundle 14 is adopted, one end of the first cooling tube bundle 14 is a refrigerant vapor shell chamber 12, the other end of the first cooling tube bundle is a refrigerant liquid shell chamber 13, and a certain angle can be formed between the first cooling tube bundle 14 and the refrigerant liquid shell chamber 13 from the refrigerant vapor shell chamber 12, so that condensate is favorably discharged and collected (for example, the first cooling tube bundle 14 is inclined downwards from the end connected with the refrigerant vapor shell chamber 12 to the end connected with the refrigerant liquid shell chamber 13); the refrigerant liquid shell chamber 13 can be provided with a sediment well for collecting and conveying the refrigerant; the upper part of the first cooling tube bundle 14 is provided with a spray header 15, a first water receiver 22 and a first ventilator 18, the lower part is provided with a first water storage tank 11 for circulating spraying of water, in particular, the utility model discloses a condensation chamber 4 sends the water in the first water storage tank 11 to the spray header 15 through a first spray water pump 16, the spray header 15 sprays water to the first cooling tube bundle 14, the first cooling tube bundle 14 begins to cool, the finally sprayed water falls into the first water storage tank 11 again due to gravity, and the utility model discloses an open the first ventilator 18, the outside air enters from an air inlet 17, passes through the first cooling tube bundle 14 and the first water receiver 22 and is discharged from the first 18, when the outside ventilator passes through the first cooling tube bundle 14, the outside ventilator can accelerate the cooling speed of the first cooling tube bundle 14, and the first water receiver 22 can prevent the outside air from spraying a large amount of water by the spray header 15, the loss of water in the first water storage tank 11 is reduced, and when the water in the first water storage tank 11 is too small, the first control valve 21 can be opened to replenish the water in the first water storage tank 11.

For the part of the absorption chamber 2, the evaporated refrigerant is in a vapor state, but needs to be contacted with a concentrated lithium bromide solution for absorption, and the absorption capacity of the lithium bromide is improved through cooling, which belongs to a process of mixing two substances and then cooling, so that the second cooling tube bundle 36 is designed into a vertical tube absorption structure; the top of the absorption chamber 2 is provided with a concentrated solution liquid distribution layer 31 of lithium bromide, and a liquid distribution absorption chamber 34 below the concentrated solution liquid distribution layer 31 is connected with the evaporation chamber 1; after the concentrated solution falls on the upper end plate of the second cooling tube bundle 36, a liquid film falls along the second cooling tube bundle 36, vapor from the evaporation chamber 1 enters the absorption chamber 2 in the upper space of the end plate, is absorbed by the concentrated lithium bromide solution to form a liquid film to fall, and the lithium bromide solution continues to absorb the vapor refrigerant along with the external evaporation cooling; finally, the solution falls into a collection chamber 32 of the absorption dilute solution at the bottom to form a dilute lithium bromide solution, and the absorption process is finished; wherein the second cooling tube bundle 36 is externally spray-cooled by adopting a liquid film and ventilation evaporation cooling structure; a water distribution chamber is formed by using a secondary end plate at the lower part of an upper end plate of the second cooling tube bundle 36, water is distributed by using a tube bundle through hole 51 (refer to fig. 4) with the diameter slightly larger than that of the second cooling tube bundle 36, a water film is formed by falling along the outer wall of the tube bundle of the second cooling tube bundle 36, a second water collector 40 and a second ventilator 41 are arranged at the side edge, and the absorption liquid in the tube bundle of the second cooling tube bundle 36 is cooled by using the evaporation of the water film, so that the absorption cooling of the absorption chamber 2 is;

specifically, the utility model discloses absorption chamber 2 sends the water in second water storage tank 33 to liquid film distribution chamber 37 through second spray water pump 38, and liquid film distribution chamber 37 seeps water to second cooling tube bank 36 outer wall, and second cooling tube bank 36 begins to cool down, and the water that seeps out at last can fall into second water storage tank 33 again along second cooling tube bank 36 outer wall because of gravity, and the utility model discloses an open second ventilator 41, outside air gets into by air intake 39, passes second cooling tube bank 36 and second water receiver 40 and is discharged by second ventilator 41 again, when outside air passes through second cooling tube bank 36, it can accelerate second cooling tube bank 36's cooling rate, and second water receiver 40 can prevent that outside air from taking away a large amount of water that seeps out in liquid film distribution chamber 37, reduces the loss of the water in second water storage tank 33, when the water in second water storage tank 33 is too little, the second control valve 43 can be opened to replenish the second reservoir 33.

Other structures are similar to the conventional lithium bromide machine, so the explanation is not added, and the utility model discloses also can adopt the mode of separating separately, form independent 4 parts and realize the lithium bromide refrigerator of integrated cooling system.

Claims

1. An integrated cooling lithium bromide refrigerator comprises an evaporation chamber (1), an absorption chamber (2) connected with the evaporation chamber (1), a regeneration chamber (3) connected with the absorption chamber (2), and a condensation chamber (4) connected with the regeneration chamber (3); the condensation chamber (4) is connected with the evaporation chamber (1); the absorption chamber (2) is connected with the regeneration chamber through a heat exchanger (5), and is characterized in that: the condensation chamber (4) comprises a first water storage tank (11) positioned at the bottom, and a refrigerant vapor shell chamber (12) and a refrigerant liquid shell chamber (13) which are respectively positioned at two sides; the refrigerant vapor shell chamber (12) and the refrigerant liquid shell chamber (13) are connected through a first cooling tube bundle (14); a spray header (15) is connected above the first cooling tube bundle (14); the spray header (15) is connected with the first water storage tank (11) through a first spray water pump (16); a first water collector (22) is connected above the spray header (15); an air inlet (17) is formed below the first cooling tube bundle (14) of the condensation chamber (4); the top of the condensation chamber (4) is connected with a first ventilator (18); a first connecting port (19) connected with the regeneration chamber is formed in the side edge of the refrigerant steam shell chamber (12); the side of the first water storage tank (11) is connected with a first water replenishing pipeline (20).

2. An integrated cooled lithium bromide refrigerator as claimed in claim 1 wherein: and a first control valve (21) is arranged on the first water replenishing pipeline (20).

3. An integrated cooled lithium bromide refrigerator as claimed in claim 1 wherein: the first cooling tube bundle (14) is a transverse tube bundle.

4. An integrated cooled lithium bromide refrigerator as claimed in claim 1 wherein: the absorption chamber (2) comprises a concentrated solution liquid distribution layer (31) positioned at the upper part, an absorption dilute solution collection chamber (32) positioned at the bottom and a second water storage tank (33); a liquid distribution absorption chamber (34) is arranged below the concentrated solution liquid distribution layer (31); a second connecting port (35) connected with the evaporation chamber (1) is formed in the side edge of the liquid distribution absorption chamber (34); the liquid distribution absorption chamber (34) is connected with the absorption dilute solution collection chamber (32) through a second cooling tube bundle (36); a liquid film water distribution chamber (37) is arranged at the upper end of the second cooling tube bundle (36); the liquid film water distribution chamber (37) is connected with the second water storage tank (33) through a second spray water pump (38); one side of a second cooling tube bundle (36) of the absorption chamber (2) is provided with an air inlet (39), and the other side is connected with a second water collector (40); a second ventilator (41) is connected above a second water collector (40) of the absorption chamber (2); a second water replenishing pipeline (42) is connected to the side edge of the second water storage tank (33); the second water collector (40) is positioned above the second water storage tank (33).

5. An integrated cooled lithium bromide refrigerator according to claim 4 wherein: and a second control valve (43) is arranged on the second water replenishing pipeline (42).

6. An integrated cooled lithium bromide refrigerator according to claim 4 wherein: the second cooling tube bundle (36) is a vertical tube bundle.