CN210886313U - Cooling system for polycrystal ingot casting - Google Patents

Abstract

The utility model discloses a cooling system for polycrystal ingot casting, which comprises an ingot furnace body, wherein the upper part and the lower part of the ingot furnace body are respectively provided with an upper water cooling system and a lower water cooling system, a heat insulation cage is arranged above the ingot furnace body, one side of the ingot furnace body is provided with a graphite heater, and a temperature sensor is arranged above the inner surface of the ingot furnace body, the utility model can cool the ingot furnace body through the upper water cooling system and the lower water cooling system respectively, can rapidly cool the system, has good cooling effect, improves the cooling efficiency in the ingot casting process, detects the system temperature through the temperature sensor, keeps the flow of cooling water through a first booster pump and a second booster pump, normally operates and accelerates the cooling speed, ensures that the system water is fully cooled through a heat exchanger, has simple structure and reasonable design, and can obviously improve the cooling efficiency in the ingot casting process, the single-furnace ingot casting period is reduced, and the ingot casting yield is improved.

Description

Cooling system for polycrystal ingot casting

Technical Field

The utility model relates to a polycrystalline silicon ingot casting technical field specifically is a cooling system for polycrystalline ingot casting.

Background

With the continuous development of the photovoltaic new energy industry, the polycrystalline silicon solar cell occupies a certain market share, with the fine development and increasingly intense competition of the industry, the improvement of the conversion efficiency of the polycrystalline silicon cell and the reduction of the manufacturing cost are two major bottlenecks to be solved urgently by the industry, a polycrystalline silicon ingot casting link needs to undergo melting, crystal growth, annealing and cooling in the operation process of an ingot casting furnace, wherein the melting and crystal growth consume a large amount of electric energy, 7000 to 8000KWH electric quantity is consumed to generally finish 870kg of ingot casting of one furnace, wherein the melting and crystal growth links respectively account for about 50 percent, the conventional cooling system for polycrystalline ingot casting has large electric consumption due to the adoption of a refrigerator, the cooling effect is not necessarily ideal, the maintenance cost is high, the management is not facilitated, the main restriction factor of the manufacturing cost of the photovoltaic industry is also in energy consumption, the cost of electricity restricts the high cost of photovoltaic, the high price, therefore if the energy consumption of the product is higher, be unfavorable for trade competition, this needs a simple structure, convenient to use, low in production cost's cooling system to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a cooling system for polycrystal ingot casting, improve ingot casting cooling system's efficiency, practice thrift cycle and power consumption, reduce cost can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a cooling system for polycrystal ingot casting, includes the ingot furnace body, the upper portion and the lower part of ingot furnace body are equipped with upper portion water cooling system and lower part water cooling system respectively, the top of ingot furnace body is equipped with thermal-insulated cage, ingot furnace body one side is equipped with the graphite heater, the top of ingot furnace body internal surface is equipped with temperature sensor, the input of outside PLC controller is connected to temperature sensor's output electricity, the output of external power source is connected to outside PLC controller input electricity.

As the utility model discloses a preferred technical scheme, upper portion water cooling system includes first booster pump, first booster pump leads to pipe connection to ingot furnace body upper portion, first booster pump leads to pipe connection has the cold water machine, ingot furnace body upper portion leads to pipe connection has first cooling tower, the output of outside PLC controller is connected to the input electricity of first booster pump and cold water machine.

As the utility model discloses a preferred technical scheme, lower part water cooling system includes the second booster pump, the second booster pump leads to pipe connection to ingot furnace body lower part, second booster pump and cold water machine lead to pipe link to each other, ingot furnace body lower part leads to pipe connection has the second cooling tower, the output of outside PLC controller is connected to the input electricity of second booster pump.

As the utility model discloses a preferred technical scheme, upper portion water cooling system and lower part water cooling system have a cooling water pool through water piping connection, cooling water pool and cold water machine lead to pipe and link to each other.

As a preferred technical scheme of the utility model, the inside heat exchanger that is equipped with of cooling water pool, heat exchanger is connected with the wet return, one side of wet return is equipped with the inlet tube, all be equipped with the solenoid valve on wet return and the inlet tube, the output of outside PLC controller is connected to the input electricity of solenoid valve.

Compared with the prior art, the beneficial effects of the utility model are that: this use is novel to cool off the ingot furnace body respectively through upper portion water cooling system and lower part water cooling system, can be very fast make the system cooling, the cooling effect is good, improve the cooling efficiency among the ingot casting process, through temperature sensor detecting system temperature, it is general to keep the flow of cooling water through first booster pump and second booster pump, the normal cooling rate that accelerates of operation, heat exchanger guarantees that system water fully cools off, whole device simple structure, and reasonable in design can obviously improve ingot casting in-process cooling efficiency, save the power consumption, reduce single-furnace ingot casting cycle, promote the ingot casting output.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: the device comprises an ingot furnace body 1, a heat insulation cage 2, a graphite heater 3, an upper water cooling system 4, a first booster pump 5, a second booster pump 6, a water cooler 7, a lower water cooling system 8, a cooling water tank 9, a water return pipe 10, a water inlet pipe 11, an electromagnetic valve 12, a heat exchanger 13, a first cooling water tower 14, a second cooling water tower 15 and a temperature sensor 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: a cooling system for polycrystalline ingot casting comprises an ingot casting furnace body 1, wherein an upper water cooling system 4 and a lower water cooling system 8 are respectively arranged at the upper part and the lower part of the ingot casting furnace body 1, the ingot casting furnace body 1 is respectively cooled through the upper water cooling system 4 and the lower water cooling system 8, the system can be rapidly cooled, the cooling effect is good, the cooling efficiency in the ingot casting process is improved, the upper water cooling system 4 comprises a first booster pump 5, the first booster pump 5 is connected to the upper part of the ingot casting furnace body 1 through a water pipe, the first booster pump 5 is connected with a water cooling machine 7 through a water pipe, the upper part of the ingot casting furnace body 1 is connected with a first cooling water tower 14 through a water pipe, the input ends of the first booster pump 5 and the water cooling machine 7 are electrically connected with the output end of an external PLC controller, the PLC controller adopts Siemens S7-300, and the PLC controller controls the first booster, the lower water cooling system 8 comprises a second booster pump 6, the second booster pump 6 is connected to the lower part of the ingot furnace body 1 through a water pipe, the second booster pump 6 is connected with a water cooling machine 7 through a water pipe, the lower part of the ingot furnace body 1 is connected with a second cooling water tower 15 through a water pipe, the input end of the second booster pump 6 is electrically connected with the output end of an external PLC controller, the flow of cooling water is kept normal through a first booster pump 5 and a second booster pump 6, the operation is normal, and the cooling speed is accelerated, the upper water cooling system 4 and the lower water cooling system 8 are connected with a cooling water tank 9 through a water pipe, a heat exchanger 13 is arranged inside the cooling water tank 9, the heat exchanger 13 ensures that the system water is fully cooled, the heat exchanger 13 is connected with a water return pipe 10, one side of the water return pipe 10 is provided with a water inlet pipe 11, the utility model has the advantages of simple structure, reasonable design, obvious improvement of cooling efficiency in the ingot casting process, electricity consumption saving and single furnace ingot casting period reduction, the novel use of the utility model is capable of obviously improving the cooling efficiency in the ingot casting process, the use of the utility model is simple, the design is reasonable, and the ingot casting yield is improved.

When in use: in the material melting stage, the heat insulation cage 2 is closed, the silicon material is melted by heating heat radiation, at the moment, the first booster pump 5 and the second booster pump 6 are in a closed state, in the crystal growth stage, the heat insulation cage 2 is opened, on the premise of guaranteeing the temperature gradient, the second booster pump 6 of the lower water cooling system 8 is opened, the first booster pump 5 of the upper water cooling system 4 is closed, the power is effectively reduced in the stage, in the cooling stage, the first booster pump 5 and the second booster pump 6 of the upper water cooling system 4 and the lower water cooling system 8 are both opened, the cooling period is effectively reduced, the machine-hour yield is improved, the temperature of the system is detected by the temperature sensor 16, the upper water cooling system 4 and the lower water cooling system 8 are respectively cooled by the first cooling water tower 14 and the second cooling water tower 15, and the heat exchanger 13 ensures.

This use is novel to cool off ingot furnace body 1 respectively through upper portion water cooling system 4 and lower part water cooling system 8, can be very fast make the system cooling, it is effectual to cool down, improve the cooling efficiency among the ingot casting process, through 16 detecting system temperatures of temperature sensor, it is general to keep the flow of cooling water through first booster pump 5 and second booster pump 6, the normal cooling rate that accelerates of operation, heat exchanger 13 guarantees that system water fully cools down, whole device simple structure, and reasonable in design can obviously improve ingot casting in-process cooling efficiency, and the electricity consumption is saved, reduce single-furnace ingot casting cycle, promote the ingot casting output.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a cooling system for polycrystal ingot casting, includes ingot furnace body (1), its characterized in that: the upper portion and the lower part of ingot furnace body (1) are equipped with upper portion water cooling system (4) and lower part water cooling system (8) respectively, the top of ingot furnace body (1) is equipped with thermal-insulated cage (2), ingot furnace body (1) one side is equipped with graphite heater (3), the top of ingot furnace body (1) internal surface is equipped with temperature sensor (16), the input of outside PLC controller is connected to the output electricity of temperature sensor (16), the output of external power source is connected to outside PLC controller input electricity.

2. The cooling system for polycrystal ingot casting according to claim 1, wherein: upper portion water cooling system (4) include first booster pump (5), first booster pump (5) are connected to ingot furnace body (1) upper portion through water pipe, first booster pump (5) have cold water machine (7) through water pipe connection, ingot furnace body (1) upper portion has first cooling tower (14) through water pipe connection, the output of outside PLC controller is connected to the input electricity of first booster pump (5) and cold water machine (7).

3. The cooling system for polycrystal ingot casting according to claim 1, wherein: lower part water cooling system (8) include second booster pump (6), second booster pump (6) lead to pipe connection to ingot furnace body (1) lower part, second booster pump (6) and cold water machine (7) lead to pipe link to each other, ingot furnace body (1) lower part has second cooling tower (15) through water piping connection, the output of outside PLC controller is connected to the input electricity of second booster pump (6).

4. The cooling system for polycrystal ingot casting according to claim 1, wherein: and the upper water cooling system (4) and the lower water cooling system (8) are connected with a cooling water tank (9) through a water pipe, and the cooling water tank (9) is connected with the water chiller (7) through a water pipe.

5. The cooling system for polycrystal ingot casting according to claim 4, wherein: inside heat exchanger (13) of being equipped with of cooling water pool (9), heat exchanger (13) are connected with wet return (10), one side of wet return (10) is equipped with inlet tube (11), all be equipped with solenoid valve (12) on wet return (10) and inlet tube (11), the output of outside PLC controller is connected to the input electricity of solenoid valve (12).

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