Switchable energy-saving cooling system special for laminating machine

Abstract

The utility model provides a switchable energy-saving cooling system special for a laminating machine, which uses a cold source with low cost to cool the laminating machine, and achieves the purposes of energy conservation, environmental protection, cost reduction and efficiency improvement for photovoltaic enterprises. The open cooling tower is connected with an open cooling tower pipeline, the air conditioner is connected with an air conditioner pipeline, the water chilling unit is connected with a water chilling unit pipeline, and the air conditioner pipeline is connected with the water chilling unit; the laminating machine is connected with a laminating machine pipeline; the laminating machine pipeline is connected with the hot side of the heat exchanger; the cold side of the heat exchanger is connected with a cold side pipeline; the auxiliary pipeline is connected with the air conditioner pipeline; a switching mechanism is arranged among the cold side pipeline, the open type cooling tower pipeline, the water chilling unit pipeline and the auxiliary pipeline, and under the switching action of the switching mechanism, the four pipelines are switched between the following two states: in the first state, the open type cooling tower pipeline is communicated with the water chilling unit pipeline through the switching mechanism, and in the second state, the open type cooling tower pipeline is communicated with the water chilling unit pipeline through the auxiliary pipeline; the cold side pipeline is communicated with the auxiliary pipeline through a switching mechanism; and in the second state, the open type cooling tower pipeline is communicated with the cold side pipeline through the switching mechanism, and the other two pipelines are cut off.

Description

Technical Field

[0001] The utility model relates to a switchable energy-saving cooling system specially used for a laminating machine. Background Art

[0002] During the production of photovoltaic products, the lamination process generates a lot of heat. This process requires a large amount of process circulating cooling water to cool the equipment to prevent the laminator from overheating and shutting down or being damaged. Since the equipment has very strict requirements on the water quality and temperature control of the circulating cooling water, a closed cooling tower will be installed in the factory specifically for the laminator, such as Figure 1 As shown, the temperature difference between the inlet and outlet water of the laminator 8 is generally 10°C. A closed cooling tower 9 is specially added for the laminator 8. The investment in the closed cooling tower 9 is about RMB 400,000 based on the single GW production capacity. Both the initial purchase cost and the later operation and maintenance cost are a considerable burden on the enterprise. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art and to provide a switchable energy-saving cooling system specially used for a laminator with a reasonable structural design, which uses a low-cost cold source to cool the laminator, thereby achieving the purpose of energy saving, environmental protection, cost reduction and efficiency improvement for photovoltaic enterprises.

[0004] The technical solution adopted by the utility model to solve the above problems is: a switchable energy-saving cooling system specially used for a laminating machine, including a laminating machine and a plant air-conditioning system, the plant air-conditioning system including an open cooling tower, an air conditioner and a chiller; the open cooling tower is connected with an open cooling tower pipeline, the air conditioner is connected with an air-conditioning pipeline, the chiller is connected with a chiller pipeline, the air-conditioning pipeline is connected with the chiller; the laminating machine is connected with a laminating machine pipeline; the utility model is characterized in that: it also includes a heat exchanger, a switching mechanism and an auxiliary pipeline; the laminating machine pipeline and the heat exchanger are connected. The hot side is connected, and the cold side of the heat exchanger is connected with a cold side pipeline; the auxiliary pipeline is connected with the air-conditioning pipeline; a switching mechanism is arranged between the cold side pipeline, the open cooling tower pipeline, the chiller pipeline and the auxiliary pipeline. Under the switching action of the switching mechanism, the above four pipelines switch between the following two states: State 1, the open cooling tower pipeline is connected with the chiller pipeline through the switching mechanism, and the cold side pipeline is connected with the auxiliary pipeline through the switching mechanism; State 2, the open cooling tower pipeline is connected with the cold side pipeline through the switching mechanism, and the other two pipelines are cut off.

[0005] The utility model has a filter installed on the cold side pipeline.

[0006] The switching mechanism of the utility model comprises a base, a rotating telescopic shaft, a pipe rack, a first transition connecting pipe and a second transition connecting pipe; the rotating telescopic shaft is installed on the base; the pipe rack is installed on the rotating telescopic shaft; the first transition connecting pipe and the second transition connecting pipe are installed on the pipe rack.

[0007] The utility model has bolt installation holes on the base.

[0008] The first transition connecting pipe and the second transition connecting pipe of the utility model are provided with quick-connecting joints or flanges.

[0009] In the first state of the utility model, the open cooling tower pipeline is connected with the chiller pipeline through the first transition connecting pipe, and the cold side pipeline is connected with the auxiliary pipeline through the second transition connecting pipe.

[0010] In the second state of the utility model, the open cooling tower pipeline is connected with the cold side pipeline through the first transition connecting pipe, the second transition connecting pipe is idle, and the other two pipelines are cut off.

[0011] The heat exchanger described in the utility model is a plate heat exchanger.

[0012] Compared with the prior art, the utility model has the following advantages and effects:

[0013] 1. The utility model has low investment cost. It cancels the closed cooling tower and adds a plate heat exchanger. According to the single GW production capacity, the investment is about 100,000 yuan, and the cost is reduced by 4 times. The system can be switched to the open cooling tower loop side used for air conditioning in summer in winter. It can not only directly use the outdoor low temperature environment for cooling, but also avoid the pollution of the original refrigeration equipment after the open and closed system water pipes are connected in series, which is of great significance to extending the life of the equipment and ensuring the stability of the system; the system can be switched to the chiller loop side in summer, using the fluid after heat exchange of the refrigeration air conditioning in the factory as a cold source to effectively cool the laminator.

[0014] 2. The utility model is easy to install and simple to operate. The important components of the heat exchange system can be concentrated in the power station, which is convenient for inspection, maintenance and repair in the later stage.

[0015] 3. The utility model plays an important role in energy conservation, environmental protection, cost reduction and efficiency improvement for photovoltaic enterprises.

[0016] 4. The transformed system can be located in the power station of the factory, not in the production plant, and does not occupy the production area of ​​the plant, thereby improving the utilization rate of the production plant and having little impact on existing production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the prior art.

[0018] Figure 2 It is a schematic structural diagram of an embodiment of the utility model in summer.

[0019] Figure 3 It is a schematic structural diagram of an embodiment of the utility model in winter.

[0020] Figure 4 It is a structural schematic diagram of the switching mechanism of the embodiment of the utility model. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0022] The embodiment of the utility model includes a heat exchanger 1, a switching mechanism 2, a filter 3, an auxiliary pipeline 4, a laminator 8 and a plant air conditioning system.

[0023] The air conditioning system of the plant area includes an open cooling tower 5, an air conditioner 6 and a chiller 7. The open cooling tower 5 and the chiller 7 are arranged in the power station of the plant building, and the air conditioner 6 is arranged in each room of the plant building and other places requiring air conditioning. The open cooling tower 5 is connected to an open cooling tower pipeline 51, the air conditioner 6 is connected to an air conditioning pipeline 61, and the chiller 7 is connected to a chiller pipeline 71. The air conditioning pipeline 61 is connected to the chiller 7.

[0024] The laminator 8 is connected to a laminator pipeline 81, which is connected to the hot side of the heat exchanger 1, and the cold side pipeline 11 is connected to the cold side of the heat exchanger 1. The function of the heat exchanger 1 is: the fluid in the open cooling tower 5 or the fluid in the chiller 7 flows into the cold side as a cold source, and the high-temperature fluid (usually 35°C) that absorbs the heat of the laminator 8 flows into the hot side. Through heat exchange, this high-temperature fluid is cooled to 25°C and returns to the laminator 8 to continuously cool the equipment. The heat exchanger 1 is a plate heat exchanger.

[0025] The auxiliary pipeline 4 is connected to the air conditioning pipeline 61. The auxiliary pipeline 4 is used to connect the cold side of the heat exchanger 1 and different cold sources to ensure that the entire circulation system works continuously after switching the system between summer and winter.

[0026] A filter 3 is installed on the cold side pipeline 11. The function of the filter 3 is: in winter, the fluid with impurities in the open cooling tower 5 is used as a cold source to enter the cold side of the heat exchanger 1 through the filter 3. The filter 3 ensures that the fluid entering the heat exchanger 1 is free of impurities after filtration, which plays an important role in extending the service life of the heat exchanger 1 and the heat exchange efficiency.

[0027] A switching mechanism 2 is provided between the cold side pipeline 11, the open cooling tower pipeline 51, the chiller pipeline 71 and the auxiliary pipeline 4. Under the switching action of the switching mechanism 2, the above four pipelines switch between the following two states: State 1: In summer, the open cooling tower pipeline 51 is connected to the chiller pipeline 71 through the switching mechanism 2, and the cold side pipeline 11 is connected to the auxiliary pipeline 4 through the switching mechanism 2; State 2: In winter, the open cooling tower pipeline 51 is connected to the cold side pipeline 11 through the switching mechanism 2, and the other two pipelines are cut off. The function of the switching mechanism 2 is to switch different heat exchange systems according to summer and winter to ensure that the cold source entering the heat exchanger 1 can meet the cooling demand of the laminator 8.

[0028] The switching mechanism 2 includes a base 21, a rotating telescopic shaft 22, a pipe rack 23, a first transition connecting pipe 24 and a second transition connecting pipe 25. The base 21 is the general support of the switching mechanism 2. A bolt mounting hole 26 is provided on the base 21, which can be fixed to the ground by expansion bolts, and the construction and installation are more flexible. The rotating telescopic shaft 22 is installed on the base 21, and can rotate and telescope itself. The pipe rack 23 is installed on the rotating telescopic shaft 22, and can be made of H-shaped steel, which is easy to purchase. The first transition connecting pipe 24 and the second transition connecting pipe 25 are installed on the pipe rack 23. The first transition connecting pipe 24 and the second transition connecting pipe 25 can be adapted to the connecting pipe sections of the loop system with different elevations by adjusting the telescopic length of the rotating telescopic shaft 22, and the winter and summer heat exchange systems can be switched by rotating the rotating telescopic shaft 22; the first transition connecting pipe 24 and the second transition connecting pipe 25 are provided with quick adapters or flanges to facilitate mutual connection after switching the system. In state 1, the open cooling tower pipeline 51 is connected to the chiller pipeline 71 through the first transition connecting pipe 24, and the cold side pipeline 11 is connected to the auxiliary pipeline 4 through the second transition connecting pipe 25; in state 2, the open cooling tower pipeline 51 is connected to the cold side pipeline 11 through the first transition connecting pipe 24, the second transition connecting pipe 25 is idle, and the other two pipelines are cut off. The switching mechanism 2 can also be implemented by a switching valve group.

[0029] In summer, the air conditioner 6 is turned on indoors, and the circulating water of the open cooling tower 5 passes through the chiller 7 along the switching mechanism 2. At this time, the switching mechanism 2 is in Figure 2 At the position shown, the cooling water discharged from the chiller 7 enters the factory building to cool the air conditioner 6 in one way, and enters the heat exchanger 1 through the auxiliary pipeline 4 connected to the switching mechanism 2 in the other way, and exchanges heat and cools the circulating cooling water used by the laminator 8 in the factory building, ensuring that the cooling water temperature entering the laminator 8 is 25°C.

[0030] When it is winter, the indoor air conditioner 6 is turned off and the switching mechanism 2 is in Figure 3At the position shown, the circulating water in the open cooling tower 5 can be used as a cold source due to the low outdoor temperature, flows through the switching mechanism 2 into the auxiliary pipeline 4, and finally exchanges heat and cools down with the circulating cooling water used by the laminator 8 in the factory building inside the heat exchanger 1, ensuring that the cooling water temperature entering the laminator 8 is 25°C. This system ensures that the circulating cooling water used by the laminator 8 is a closed cycle regardless of summer or winter, ensuring the water quality of the circulating water, which plays an important role in extending the service life of the laminator 8 and ensuring the quality stability of the photovoltaic products produced.

[0031] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is only an example of the structure of the utility model. All equivalent changes or simple changes made based on the structure, features and principles described in the patent concept of the utility model are included in the protection scope of the utility model patent. Technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the protection scope of the utility model.

Claims

1. A switchable energy-saving cooling system dedicated to a laminator, comprising a laminator and a plant air conditioning system, wherein the plant air conditioning system comprises an open cooling tower, an air conditioner and a chiller; the open cooling tower is connected with an open cooling tower pipeline, the air conditioner is connected with an air conditioning pipeline, the chiller is connected with a chiller pipeline, and the air conditioning pipeline is connected with the chiller; the laminator is connected with a laminator pipeline; the characteristics are: It also includes a heat exchanger, a switching mechanism and an auxiliary pipeline; the laminator pipeline is connected to the hot side of the heat exchanger, and the cold side pipeline is connected to the cold side of the heat exchanger; the auxiliary pipeline is connected to the air-conditioning pipeline; a switching mechanism is provided between the cold side pipeline, the open cooling tower pipeline, the chiller pipeline and the auxiliary pipeline, and under the switching action of the switching mechanism, the above four pipelines switch between the following two states: State 1, the open cooling tower pipeline is connected to the chiller pipeline through the switching mechanism, and the cold side pipeline is connected to the auxiliary pipeline through the switching mechanism; State 2, the open cooling tower pipeline is connected to the cold side pipeline through the switching mechanism, and the other two pipelines are cut off.

2. The switchable energy-saving cooling system dedicated to a laminator according to claim 1, characterized in that: A filter is installed on the cold side pipeline.

3. The switchable energy-saving cooling system dedicated to a laminator according to claim 1, characterized in that: The switching mechanism comprises a base, a rotating and telescopic shaft, a pipe rack, a first transition connecting pipe and a second transition connecting pipe; the rotating and telescopic shaft is mounted on the base; the pipe rack is mounted on the rotating and telescopic shaft; the first transition connecting pipe and the second transition connecting pipe are mounted on the pipe rack.

4. The switchable energy-saving cooling system dedicated to a laminator according to claim 3, characterized in that: Bolt mounting holes are provided on the base.

5. The switchable energy-saving cooling system dedicated to a laminator according to claim 3, characterized in that: The first transition connecting pipe and the second transition connecting pipe are provided with quick-connect joints or flanges.

6. The switchable energy-saving cooling system dedicated to a laminator according to claim 3, characterized in that: In state one, the open cooling tower pipeline is connected to the chiller pipeline through the first transition connecting pipe, and the cold side pipeline is connected to the auxiliary pipeline through the second transition connecting pipe.

7. The switchable energy-saving cooling system dedicated to a laminator according to claim 3, characterized in that: In state two, the open cooling tower pipeline is connected to the cold side pipeline through the first transition connecting pipe, the second transition connecting pipe is idle, and the other two pipelines are cut off.

8. The switchable energy-saving cooling system dedicated to a laminator according to claim 1, characterized in that: The heat exchanger is a plate heat exchanger.

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