Polycrystalline silicon casting cooling device

Abstract

The utility model provides a polycrystalline silicon casting cooling device, which relates to the technical field of polycrystalline silicon production, and comprises a pipeline and a plurality of guide plates, the two sides of the inner wall of the pipeline are respectively provided with a plurality of guide plates, the other sides of the guide plates penetrate through the pipeline and are fixedly connected with heat conducting plates, and the guide plates are provided with certain inclination angles. Through the arrangement of the flow guide plate, the impact force of liquid polycrystalline silicon falling from a high position can be reduced during use, the possibility of damage to the mold is further reduced, meanwhile, the flowing path of the liquid polycrystalline silicon can be lengthened, the contact area of the liquid polycrystalline silicon and the flow guide plate is increased, heat can be rapidly conducted through the heat conduction plate, and therefore the temperature is effectively reduced, and the service life of the mold is prolonged. Through the arrangement of the auxiliary mechanism, during use, liquid polycrystalline silicon is effectively prevented from being splashed out during dumping, and material waste is avoided, through cooperation of the heat exchange pipe, the water inlet and the water outlet, rapid cooling of the liquid polycrystalline silicon can be achieved, meanwhile, cooling water can be heated, heat recovery is achieved, and energy is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of polysilicon production, in particular to a polysilicon casting and cooling device. Background Art

[0002] Polysilicon is a silicon material with a relatively complex crystal structure. It is widely used in the energy field, especially in the solar energy field. With the development of solar energy technology, the preparation process and performance of polysilicon are constantly improved to improve the efficiency and stability of solar cells and promote the development of renewable energy.

[0003] After searching, the patent number "CN217231020U" mentioned in the text that "the utility model discloses a silicon ingot cooling device for polysilicon purification treatment, including a cooling pool directly placed on the ground, a box, a connecting frame and a clamping mechanism, and a liquid pump is installed at the lower left end of the cooling pool, the liquid inlet end of the liquid pump is connected to the lower left end of the cooling pool through a pipeline, and the liquid outlet end of the liquid pump is connected to the lower right end of the cooling pool through a pipeline and a cooling device, the box is arranged inside the cooling pool, the connecting frame is fixedly connected to the supporting plate for bearing by bolts, and the clamping mechanism is symmetrically arranged on the front and rear sides of the box. The silicon ingot cooling device for pure processing is convenient for taking the silicon ingots inside the box. Combined with the setting of the clamping mechanism and the fixed clamping plate, the box can be limited very conveniently. Moreover, through the setting of the liquid pump and the cooling device, it can perform circulation cooling to achieve a better cooling effect. "The device can perform circulation cooling to achieve a better cooling effect through the setting of the liquid pump and the cooling device. However, the device directly pours the liquid polysilicon into the mold, which has a large impact force. At the same time, the temperature of the liquid polysilicon is high when it is poured into the mold. There is no intermediate equipment for buffering and cooling, which is easy to damage the mold and shorten the service life of the mold.

[0004] Therefore, we provide a polysilicon casting cooling device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a polysilicon casting cooling device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a polysilicon casting cooling device, comprising a pipeline and a guide plate, a plurality of guide plates are installed on both sides of the inner wall of the pipeline, a heat conduction plate is fixedly connected to the other side of the guide plate passing through the pipeline, and the guide plate is set with a certain inclination angle.

[0007] Preferably, the guide plates on both sides of the inner wall of the pipeline are arranged alternately, and the guide plates are semicircular in shape and fit closely with the inner wall of the pipeline.

[0008] Preferably, the material of the guide plate is the same as that of the heat conducting plate, and both have good thermal conductivity and high temperature resistance.

[0009] Preferably, an auxiliary mechanism is installed at the top end of the pipeline, and the auxiliary mechanism includes a connecting component and a heat exchange component. The connecting component is installed at the top end of the pipeline, and the heat exchange component is installed on the outer wall of the pipeline.

[0010] Preferably, the connecting assembly comprises a feed port and a discharge port, the top end of the pipe is provided with a feed port, the bottom end of the pipe is provided with a discharge port, and the feed port is in the shape of a funnel.

[0011] Preferably, the heat exchange component comprises a heat exchange tube, a water inlet and a water outlet, the outer wall of the pipeline is installed with a heat exchange tube, one end of the heat exchange tube is provided with a water inlet, and the other end of the heat exchange tube is provided with a water outlet.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. By setting the guide plate, the impact force of liquid polysilicon falling from a high place can be reduced during use, thereby reducing the possibility of mold damage. At the same time, the flow path of liquid polysilicon can be lengthened, the contact area between liquid polysilicon and the guide plate can be increased, and the heat can be quickly conducted through the heat conduction plate, thereby effectively reducing the temperature.

[0014] 2. Through the setting of auxiliary mechanisms, when in use, through the cooperation of the feed port and the discharge port, it is convenient to guide the liquid polysilicon from the catalytic furnace into the mold, and at the same time effectively prevent the liquid polysilicon from splashing when pouring, causing material waste. Through the cooperation of the heat exchange tube, the water inlet and the water outlet, the liquid polysilicon can be cooled quickly, and the cooling water can be heated at the same time, thereby realizing heat recovery and saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall side structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the overall top view structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the overall cross-sectional structure of the utility model.

[0019] Numbers in the figure: 1, pipeline; 2, guide plate; 3, heat conduction plate; 4, auxiliary mechanism; 41, connecting assembly; 411, feed inlet; 412, discharge port; 42, heat exchange assembly; 421, heat exchange tube; 422, water inlet; 423, water outlet. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Embodiment 1

[0022] See also Figure 1-4 As shown, the utility model provides an implementation mode: a polysilicon casting cooling device, comprising a pipeline 1 and a guide plate 2, a plurality of guide plates 2 are installed on both sides of the inner wall of the pipeline 1, a heat conducting plate 3 is fixedly connected to the other side of the guide plate 2 passing through the pipeline 1, and the guide plate 2 is provided with a certain inclination angle.

[0023] Furthermore, the guide plates 2 on both sides of the inner wall of the pipe 1 are staggered, and the guide plates 2 are semicircular in shape and fit the inner wall of the pipe 1 so as to lengthen the flow path of the liquid polysilicon and increase the contact area between the liquid polysilicon and the guide plates 2 to improve the cooling effect.

[0024] Furthermore, the material of the guide plate 2 is the same as that of the heat conducting plate 3 , and both have good thermal conductivity and high temperature resistance, so that heat can be conducted quickly, thereby effectively reducing the temperature.

[0025] Embodiment 2

[0026] See also Figure 1 and Figure 2 As shown, compared with Example 1, as another implementation mode of the utility model, an auxiliary mechanism 4 is installed at the top of the pipe 1, and the auxiliary mechanism 4 includes a connecting component 41 and a heat exchange component 42. The top of the pipe 1 is installed with a connecting component 41, and the outer wall of the pipe 1 is installed with a heat exchange component 42. Through the setting of the auxiliary mechanism 4, it is convenient to guide the liquid polysilicon from the catalytic furnace into the mold, and at the same time, it can achieve rapid cooling and heat recovery, saving energy.

[0027] Furthermore, the connecting component 41 includes a feed port 411 and a discharge port 412. The feed port 411 is installed at the top end of the pipe 1, and the discharge port 412 is installed at the bottom end of the pipe 1. The shape of the feed port 411 is a funnel shape. Through the setting of the connecting component 41, it is convenient to guide the liquid polysilicon from the catalytic furnace into the mold, and at the same time, it is effectively prevented that the liquid polysilicon splashes when pouring, causing material waste.

[0028] Furthermore, the heat exchange component 42 includes a heat exchange tube 421, a water inlet 422 and a water outlet 423. The heat exchange tube 421 is installed on the outer wall of the pipeline 1, the water inlet 422 is installed at one end of the heat exchange tube 421, and the water outlet 423 is installed at the other end of the heat exchange tube 421. Through the setting of the heat exchange component 42, the liquid polysilicon can be cooled quickly, and the cooling water can be heated at the same time, thereby realizing heat recovery and saving energy.

[0029] Working principle: first, move a polysilicon casting and cooling device to the working position. When in use, in the first step, the liquid polysilicon in the catalytic furnace enters the pipeline 1 through the feed port 411. In the second step, the impact force of the liquid polysilicon falling from a high place is reduced by the guide plate 2, and the flow path of the liquid polysilicon is guided by the guide plate 2. In the third step, the heat generated by the liquid polysilicon is transferred to the heat exchange tube 421 through the heat conduction plate 3. In the fourth step, cold water is injected into the water inlet 422, and the heat of the liquid polysilicon is transferred to the cold water through the heat exchange tube 421 to heat it, and the heated water is discharged from the water outlet 423 for heat recovery. In the fifth step, the liquid polysilicon flows into the mold through the discharge port 412. In this way, the use process of a polysilicon casting and cooling device is completed.

Claims

1. A polysilicon casting cooling device, comprising a pipeline (1) and a guide plate (2), characterized in that: A plurality of guide plates (2) are installed on both sides of the inner wall of the pipeline (1); a heat conduction plate (3) is fixedly connected to the other side of the guide plate (2) penetrating the pipeline (1); and the guide plate (2) is provided with a certain inclination angle.

2. A polysilicon casting cooling device according to claim 1, characterized in that: The guide plates (2) on both sides of the inner wall of the pipeline (1) are arranged alternately, and the guide plates (2) are semicircular in shape and fit closely with the inner wall of the pipeline (1).

3. A polysilicon casting cooling device according to claim 2, characterized in that: The material of the guide plate (2) is the same as that of the heat conducting plate (3), and both have good thermal conductivity and high temperature resistance.

4. The polysilicon casting cooling device according to claim 1, characterized in that: An auxiliary mechanism (4) is installed at the top end of the pipeline (1), and the auxiliary mechanism (4) comprises a connection component (41) and a heat exchange component (42). The connection component (41) is installed at the top end of the pipeline (1), and the heat exchange component (42) is installed on the outer wall of the pipeline (1).

5. The polysilicon casting cooling device according to claim 4, characterized in that: The connecting assembly (41) comprises a feed inlet (411) and a discharge port (412); the top end of the pipe (1) is provided with a feed inlet (411), the bottom end of the pipe (1) is provided with a discharge port (412), and the feed inlet (411) is in the shape of a funnel.

6. The polysilicon casting cooling device according to claim 5, characterized in that: The heat exchange component (42) comprises a heat exchange tube (421), a water inlet (422) and a water outlet (423); the heat exchange tube (421) is installed on the outer wall of the pipeline (1); one end of the heat exchange tube (421) is provided with a water inlet (422); and the other end of the heat exchange tube (421) is provided with a water outlet (423).

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