Cooling circulating water system with temperature adjusting function

Abstract

The utility model relates to the technical field of cooling systems, in particular to a cooling circulating water system with a temperature adjusting function. First cooling water in the first condenser sequentially enters the heat energy storage device, a first generator of the absorption heat pump unit, a second generator of the lithium bromide unit, the heat exchanger, the second cooling system and a second evaporator of the lithium bromide unit to be cooled and then returns to the first condenser; a second condenser of the absorption heat pump unit is connected with a first water supply pipeline, and softened water in the first water supply pipeline absorbs heat and is heated after entering the second condenser of the absorption heat pump unit; a second water supply pipeline is connected to the heat exchanger, and domestic water in the second water supply pipeline enters the heat exchanger, exchanges heat with the first cooling water and then is heated. The problems that most of traditional cooling systems only dissipate heat of high-temperature water and do not well utilize the heat of the high-temperature water, and a large amount of waste is caused are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cooling system technical field, concretely relates to a cooling circulating water system with temperature regulation function. BACKGROUND

[0002] In the wine brewing industry, a large amount of heat is generated during the production process, and cooling circulating water is needed to control the temperature to ensure the quality and efficiency of brewing. At the same time, this process also produces a large amount of high-temperature cooling water. For a long time, the wine brewing industry has many deficiencies in the treatment and utilization of high-temperature cooling water.

[0003] For the high-temperature cooling water generated during the wine brewing process, the existing treatment methods are mostly rough. One is to directly discharge these high-temperature cooling water, which not only causes a huge waste of heat energy, but also increases environmental heat pollution and water resource consumption. Another is to cool the high-temperature cooling water through a traditional cooling circulating water system, and then recycle the cooled water. However, the traditional cooling system mostly only simply dissipates the heat of the high-temperature cooling water, and does not make good use of the heat in the high-temperature cooling water, still causing a lot of waste.

[0004] With the increasing strictness of environmental protection requirements and the continuous rise of energy prices, the wine brewing industry urgently needs an innovative cooling circulating water system that can achieve precise temperature regulation, fully recover and utilize the heat energy in high-temperature cooling water, improve energy utilization efficiency, reduce environmental pollution, and reduce production costs, thereby improving the sustainable development capability of the entire industry. SUMMARY

[0005] The utility model aims at providing a cooling circulating water system with temperature regulation function, solving the problem that the traditional cooling system mostly only simply dissipates the heat of high-temperature water, does not make good use of the heat in the high-temperature water, and causes a lot of waste.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The application discloses a cooling circulating water system with temperature regulation function, which comprises a first condenser, a heat storage device, an absorption heat pump unit, a lithium bromide unit, a heat exchanger and a second cooling system, wherein first cooling water in the first condenser is sequentially introduced into the heat storage device, a first generator of the absorption heat pump unit, a second generator of the lithium bromide unit, the heat exchanger, the second cooling system and a second evaporator of the lithium bromide unit for temperature reduction and then returns to the first condenser; a first water supply pipeline is connected to a second condenser of the absorption heat pump unit, and softened water in the first water supply pipeline is heated and then raised in temperature after entering the second condenser of the absorption heat pump unit; a second water supply pipeline is connected to the heat exchanger, and domestic water in the second water supply pipeline is heated after entering the heat exchanger and exchanging heat with the first cooling water.

[0008] Further, the application further comprises a first cooling system, wherein a third condenser of the lithium bromide unit delivers second cooling water to the first cooling system, and the second cooling water is cooled in the first cooling system and then delivered to a second absorber of the lithium bromide unit.

[0009] Further, the first cooling system is an open cooling tower.

[0010] Further, the heat exchanger is a tube heat exchanger or a plate heat exchanger.

[0011] Further, the application further comprises an insulation water tank, wherein the first cooling water is cooled in the second evaporator of the lithium bromide unit and then enters the insulation water tank, the first condenser is provided with a plurality of first condensers, the insulation water tank is connected to the plurality of first condensers through a plurality of water distribution pipelines, and a first valve is arranged on each of the plurality of water distribution pipelines.

[0012] Further, a water supplement pipeline is arranged on the insulation water tank.

[0013] Further, the heat storage device is a large-sized insulation water tank.

[0014] Further, a water inlet pipe is arranged at an upper end of the large-sized insulation water tank, the water inlet pipe is connected to the first condenser through a first pipeline, a water outlet pipe is arranged at a lower end of the large-sized insulation water tank, the water outlet pipe is connected to the first generator of the absorption heat pump unit through a second pipeline, a filter is arranged at a connection position of the water outlet pipe and the second pipeline, and a second valve for controlling opening and closing of the water outlet pipe is arranged on the water outlet pipe.

[0015] Compared with the prior art, the utility model has at least one of following beneficial effects: 1, by setting absorption heat pump unit, can carry out first cooling to first cooling water under high temperature state, and provide heat for softened water, make softened water temperature rise and form steam, use in brewing process, by setting the second generator of lithium bromide unit, can carry out second cooling to first cooling water, by heat exchanger can carry out third cooling to first cooling water, and in the process of cooling, heat is transferred to domestic water in second water supply pipeline, is used for supplying factory area life, by setting second cooling system can carry out fourth cooling to first cooling water, by the second evaporator of lithium bromide unit can carry out fifth cooling to first cooling water, 2, total five times cooling, can adjust five times temperature to first cooling water, for first cooling water under high temperature state, overall cooling effect is relatively smooth transition, and for different temperature interval first cooling water adopts different cooling measures and through twice heat energy recovery, can recycle and utilize a large amount of heat energy in first cooling water, solve the problem that traditional cooling system mostly only simply dissipates the heat of high temperature cooling water, does not utilize the heat in high temperature cooling water well, causes a large amount of waste, 3, by setting heat storage device, can store first cooling water needing cooling temporarily, when storing to certain amount, deliver to absorption heat pump unit and carry out cooling in turn, can provide stable water supply to whole cooling process, avoid unstable water flow and cause whole system work unsaturated or unstable, simultaneously heat storage device can also store high temperature first cooling water that whole system cannot digest temporarily, with set good flow delivery absorption heat pump unit and carry out cooling in turn. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is whole system frame schematic view of the cooling circulating water system with temperature regulation function of the utility model.

[0017] Fig. 2 It is lithium bromide unit system frame schematic view of the cooling circulating water system with temperature regulation function of the utility model.

[0018] Fig. 3 It is heat storage device section view schematic view of the cooling circulating water system with temperature regulation function of the utility model.

[0019] Icon: 1-First condenser, 2-Heat storage device, 3-Absorption heat pump unit, 4-Lithium bromide unit, 5-Heat exchanger, 6-Second cooling system, 7-Second generator, 8-Second evaporator, 9-First water supply pipeline, 10-Second water supply pipeline, 11-First cooling system, 12-Third condenser, 13-Second absorber, 14-Heat preservation water tank, 15-Water distribution pipeline, 16-Water supplement pipeline, 17-Water inlet pipe, 18-Water outlet pipe, 19-Filter, 20-Second pipeline, 21-Second valve, 22-Throttle valve, 23-Liquid pump, 24-Solution heat exchanger, 25-Pressure reducing valve. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail by combining with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0021] Figs. 1 to 3 The utility model discloses an example.

[0022] Example:

[0023] The application discloses a cooling circulating water system with temperature regulation function, which comprises a first condenser 1, a heat storage device 2, an absorption heat pump unit 3, a lithium bromide unit 4, a heat exchanger 5 and a second cooling system 6, wherein first cooling water in the first condenser 1 enters the heat storage device 2, a first generator of the absorption heat pump unit 3, a second generator 7 of the lithium bromide unit 4, the heat exchanger 5, the second cooling system 6 and a second evaporator 8 of the lithium bromide unit 4 in sequence to be cooled and then returns to the first condenser 1; a second condenser of the absorption heat pump unit 3 is connected with a first water supply pipeline 9, softened water in the first water supply pipeline 9 is heated and then enters the second condenser of the absorption heat pump unit 3 to be heated and warmed; the heat exchanger 5 is connected with a second water supply pipeline 10, and domestic water in the second water supply pipeline 10 is heated after heat exchange with the first cooling water in the heat exchanger 5. By arranging the absorption heat pump unit 3, the first cooling water in a high-temperature state can be cooled for the first time, and the heat is provided to the softened water to warm the softened water to form steam, which is used in the wine brewing process; by arranging the second generator 7 of the lithium bromide unit 4, the first cooling water can be cooled for the second time; by arranging the heat exchanger 5, the first cooling water can be cooled for the third time, and the heat is transferred to the domestic water in the second water supply pipeline 10 in the cooling process, which is used for the life in the factory area; by arranging the second cooling system 6, the first cooling water can be cooled for the fourth time; and by arranging the second evaporator 8 of the lithium bromide unit 4, the first cooling water can be cooled for the fifth time. The first cooling water is cooled for five times in total, and the temperature of the first cooling water can be regulated for five times. For the first cooling water in a high-temperature state, the overall cooling effect is relatively smooth, different cooling measures are taken for the first cooling water in different temperature ranges, and a large amount of heat energy in the first cooling water can be recycled by twice heat energy recovery. The application solves the problem that the heat in the high-temperature water is not well utilized in the traditional cooling system, and the heat in the high-temperature water is simply dissipated, thereby causing a large amount of waste. The first condenser 1 is used as a cooling wine and water mixed steam in the wine workshop.

[0024] The application further comprises a first cooling system 11, a third condenser 12 of the lithium bromide unit 4 delivers second cooling water to the first cooling system 11, and the second cooling water is cooled in the first cooling system 11 and then delivered to a second absorber 13 of the lithium bromide unit 4.

[0025] The first cooling system 11 is an open cooling tower. The lithium bromide unit 4 includes a second generator 7, a third condenser 12, a throttling valve 22, a second evaporator 8, a second absorber 13, a liquid pump 23, a solution heat exchanger 24, a pressure reducing valve 25, and an open cooling tower. The second generator 7 outputs refrigerant vapor and concentrated lithium bromide solution to the second condenser and the solution heat exchanger 24, respectively. The concentrated lithium bromide solution enters the absorber through the pressure reducing valve 25. The refrigerant vapor forms refrigerant in the third condenser 12. The refrigerant enters the second evaporator 8 through the throttling valve 22 to form refrigerant vapor again. The second absorber 13 receives the refrigerant vapor from the second evaporator 8 and forms dilute lithium bromide solution with the concentrated lithium bromide solution. The dilute lithium bromide solution enters the solution heat exchanger 24 through the liquid pump 23 and exchanges heat with the concentrated lithium bromide solution before returning to the second generator 7. The second condenser delivers cooling water to the first cooling system 11 for cooling. The cooled cooling water enters the second absorber 13 for heat exchange before returning to the third condenser 12 to form a closed cooling cycle. The second generator 7 is one of the core components of the unit. Its function is to heat the dilute lithium bromide solution, causing water vaporization and increasing the concentration of the solution, forming concentrated lithium bromide solution. The third condenser 12 is used to cool and condense the water vapor produced by the second generator 7 into liquid water. The condenser has a cooling water circulation that exchanges heat with the water vapor, causing it to lose heat and become liquid. The second evaporator 8 is where the liquid water enters through the throttling valve 22 and rapidly expands to vaporize. In the process of vaporization, it absorbs a large amount of heat from the coolant water in the evaporator, achieving the purpose of cooling and refrigeration. The resulting low-temperature water vapor enters the second absorber 13. The second absorber 13 functions to absorb the low-temperature water vapor produced in the evaporator with concentrated lithium bromide solution, gradually reducing the concentration of the solution. Heat is released during the absorption process, which usually requires cooling water to prevent the absorption capacity from decreasing. The absorption heat pump unit 3 is a device that uses heat energy to drive and increase the temperature of low-temperature heat sources through absorption and release of heat. It mainly consists of a first generator, a second condenser, a first evaporator, a first absorber, and a solution pump 23. The first generator is one of the "power sources" of the heat pump unit. Its function is to evaporate the refrigerant in the binary solution of absorbent-refrigerant using high-temperature heat sources. The second condenser 1 is mainly used to cool and condense the refrigerant vapor into a liquid. In this process, the heat released by the refrigerant vapor can be transferred to the external heating medium (softened water) through the heat exchange tubes of the second condenser. The first evaporator is a component that absorbs low-temperature heat sources. The first evaporator usually uses special heat exchange structures, such as plate heat exchangers or shell and tube heat exchangers, to increase the contact area between the refrigerant and the low-temperature heat source, improving the heat absorption efficiency. The first absorber is responsible for reabsorbing the refrigerant vapor produced by the first evaporator into the absorbent solution, forming a dilute solution.The second cooling system 6 is a closed cooling tower, which is a device that cools process fluid (first cooling water) in a closed circulation system. It is mainly composed of shell, internal heat exchanger, fan, spraying system, sump and circulating water pump, etc. Shell: Generally made of glass fiber reinforced plastic, stainless steel or galvanized steel plate, etc. It plays a protective role for the internal components and prevents external environmental interference. Its shape is diverse, commonly square and round. Internal heat exchanger: It is the core component of the closed cooling tower, which is used to transfer the heat of the internally closed circulating hot fluid. It is usually a tube bundle made of copper or stainless steel, wrapped with fins to increase the heat exchange area. The hot fluid flows in the tube, and the heat is exchanged with the outside cooling medium through the tube wall and fins. Fan: The fan is installed at the top or side of the cooling tower, which provides the power for air flow. Through the operation of the fan, air is forced to flow through the internal heat exchanger, taking away heat, thereby enhancing the cooling effect. The fan type has axial and centrifugal, the former has large air volume and small air pressure, suitable for occasions with small resistance; the latter has large air pressure and relatively small air volume, suitable for situations that need to overcome large air resistance. Spraying system: Including spray head and water supply pipeline, used to uniformly spray the third cooling water on the outside of the internal heat exchanger. When the hot fluid flows inside the internal heat exchanger, the third cooling water sprayed on the heat exchanger absorbs heat and partially evaporates, and the evaporation process will take away a lot of heat, thereby reducing the temperature of the hot fluid. Sump: Located at the bottom of the cooling tower, used to collect the third cooling water falling from the heat exchanger and spraying system. The water in the sump is transported to the spraying system again by the circulating water pump, realizing the recycling of the third cooling water. Working principle: The working process of the closed cooling tower is a complex heat exchange and evaporation cooling process. The internally closed circulating hot fluid (first cooling water) flows in the tube of the internal heat exchanger, and the spraying water outside the tube forms a water film on the surface of the heat exchanger. The fan makes air pass through the water film and fins, at this time two cooling mechanisms occur. Sensible heat exchange: The hot fluid transfers heat to the third cooling water outside the tube through the tube wall and fins, and the temperature of the third cooling water rises, which is a sensible heat exchange process. Evaporative cooling: Due to the action of the fan, part of the water evaporates when the air passes through the water film. The water absorbs a lot of heat in the evaporation process, which mainly comes from the hot fluid, thereby further reducing the temperature of the hot fluid. After these two cooling mechanisms, the temperature of the hot fluid is significantly reduced, and then it returns to the equipment that needs to be cooled for further circulation.

[0026] The heat exchanger 5 is a tube heat exchanger 5 or a plate heat exchanger 5. Both the tube heat exchanger 5 and the plate heat exchanger 5 can heat the tap water at about 25°C to about 50°C by heat exchange, which is used as domestic hot water.

[0027] The heat storage water tank 14 is further included, the first cooling water after being cooled by the second evaporator 8 of the lithium bromide unit 4 enters the heat storage water tank 14, the first condenser 1 is arranged as a plurality of first condensers 1, the heat storage water tank 14 is connected with the plurality of first condensers 1 through a plurality of water distribution pipes 15, and the first valve is arranged on the plurality of water distribution pipes 15. The heat storage water tank 14 can store the first cooling water that has been cooled, and when the first cooling water is needed, the corresponding water distribution pipe 15 is used to transport the first cooling water to the first condenser 1 that needs the first cooling water. In this way, the cooled first cooling water can be distributed according to the needs, so that the temperature fluctuation in the first condenser 1 is avoided after the first cooling water is directly transported to the first condenser 1. The heat storage water tank 14 can be a large heat storage water tank, and the inside and outside temperatures are isolated by the tank wall to ensure that the internal temperature does not change rapidly. The water supply pump is arranged in the heat storage water tank 14 corresponding to each water distribution pipe 15.

[0028] The heat storage water tank 14 is provided with a water supplement pipe 16. When the cooled first cooling water is insufficient to meet the use of the plurality of first condensers 1, the water supplement pipe 16 is used to supplement water to meet the production needs. In the entire cooling water circulation system, the first cooling water discharged from the first condenser 1 is at about 85-95 DEG C, and the first cooling water at this temperature is stored in the heat storage device 2 for heat preservation, and then enters the absorption heat pump unit 3. The first cooling water is heat-exchanged with the softened water transported by the first water supply pipe 9, and the first cooling water is reduced to 75 DEG C. The softened water absorbs heat to form 0.25Mpa saturated steam. The first cooling water at 75 DEG C enters the lithium bromide unit 4 for the first time to reduce to 55 DEG C. The first cooling water at 55 DEG C enters the heat exchanger 5 to heat-exchange with the domestic water in the second water supply pipe 10, and the domestic water at 25 DEG C is heated to 50 DEG C. At the same time, the first cooling water is also reduced to 50 DEG C. The first cooling water at 50 DEG C enters the second cooling system 6 for cooling to reduce to 32 DEG C. The first cooling water at 32 DEG C enters the lithium bromide unit 4 again for the second time to reduce to 16 DEG C. The temperature meets the requirement of being used as cooling water again, and the first cooling water enters the heat storage water tank 14 for storage.

[0029] The heat storage device 2 is a large heat storage water tank. The large heat storage water tank can simply and directly store the first cooling water at a high temperature state, and avoid heat loss.

[0030] The upper end of the large heat preservation water tank is provided with a water inlet pipe 17, the water inlet pipe 17 is communicated with the first condenser 1 through a first pipeline, the lower end of the large heat preservation water tank is provided with a water outlet pipe 18, the water outlet pipe 18 is communicated with the first generator of the absorption heat pump unit 3 through a second pipeline 20, a filter 19 is installed at the connection position of the water outlet pipe 18 and the second pipeline 20, and a second valve 21 for controlling the opening and closing of the water outlet pipe 18 is installed on the water outlet pipe 18. By arranging the filter 19, the first cooling water can be filtered, so that impurities are avoided after the first cooling water is recycled. And the second valve 21 can be used to close the water outlet pipe 18, so that the filter 19 can be disassembled under the condition of water stoppage, and is replaced or cleaned.

[0031] While the application has been described with reference to numerous specific embodiments, one of ordinary skill in the art will recognize that numerous other modifications can be made to the application and examples described herein, and that such modifications do not depart from the scope and spirit of the application. More specifically, many variations and modifications of the subject combination layout can be made to the embodiments described in the specification, drawings, and claims. Other uses will also become apparent to those of ordinary skill in the art.

Claims

1. A cooling circulating water system with temperature regulation function, characterized in that, The application relates to a heat storage device and a cooling system, which comprises a first condenser (1), a heat storage device (2), an absorption heat pump unit (3), a lithium bromide unit (4), a heat exchanger (5) and a second cooling system (6), wherein first cooling water in the first condenser (1) sequentially enters the heat storage device (2), a first generator of the absorption heat pump unit (3), a second generator (7) of the lithium bromide unit (4), the heat exchanger (5), the second cooling system (6) and a second evaporator (8) of the lithium bromide unit (4) to be cooled and then returns to the first condenser (1); a first water supply pipeline (9) is connected to a second condenser of the absorption heat pump unit (3), softened water in the first water supply pipeline (9) is heated and then enters the second condenser of the absorption heat pump unit (3); a second water supply pipeline (10) is connected to the heat exchanger (5), and domestic water in the second water supply pipeline (10) is heated after heat exchange with the first cooling water in the heat exchanger (5).

2. The cooling circulating water system with temperature adjustment function according to claim 1, characterized in that: The application further comprises a first cooling system (11), a third condenser (12) of the lithium bromide unit (4) delivers second cooling water to the first cooling system (11), and the second cooling water is cooled in the first cooling system (11) and then delivered to a second absorber (13) of the lithium bromide unit (4).

3. The cooling circulating water system with temperature adjustment function according to claim 2, characterized in that: The first cooling system (11) is an open cooling tower.

4. The cooling circulating water system with temperature adjustment function according to claim 1, characterized in that: The heat exchanger (5) is a column tube heat exchanger (5) or a plate heat exchanger (5).

5. The cooling circulating water system with temperature adjustment function according to claim 1, characterized in that: The application further comprises a heat preservation water tank (14), the first cooling water is cooled in the second evaporator (8) of the lithium bromide unit (4) and then enters the heat preservation water tank (14), the first condenser (1) is provided as a plurality of first condensers (1), the heat preservation water tank (14) is connected to the plurality of first condensers (1) through a plurality of water distribution pipelines (15), and first valves are arranged on the plurality of water distribution pipelines (15).

6. The cooling circulating water system with temperature adjustment function according to claim 5, characterized in that: A water supplement pipeline (16) is arranged on the heat preservation water tank (14).

7. The cooling circulating water system with temperature adjustment function according to claim 1, characterized in that: The heat storage device (2) is a large heat preservation water tank.

8. The cooling circulating water system with temperature adjustment function according to claim 7, characterized in that: A water inlet pipe (17) is arranged at an upper end of the large heat preservation water tank, the water inlet pipe (17) is connected to the first condenser (1) through a first pipeline, a water outlet pipe (18) is arranged at a lower end of the large heat preservation water tank, the water outlet pipe (18) is connected to a first generator of the absorption heat pump unit (3) through a second pipeline (20), a filter (19) is arranged at a connection position of the water outlet pipe (18) and the second pipeline (20), and a second valve (21) for controlling the water outlet pipe (18) is arranged on the water outlet pipe (18).

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