Polycrystalline silicon bar crushing process temperature measuring device and cooling system

Abstract

The utility model provides a polycrystalline silicon bar crushing process temperature measuring device and a cooling system, and relates to the field of polycrystalline silicon production equipment. The temperature measuring device for the polycrystalline silicon bar crushing process comprises a stepping mechanism which is provided with a conveying belt, and a plurality of material supporting assemblies are arranged on the conveying belt; the temperature measuring mechanism is provided with mounting frames arranged on the two sides of the conveying belt and a plurality of infrared temperature measuring sensors arranged on the two inner side faces of the mounting frames respectively; the temperature display controller can receive a signal of the infrared temperature measurement sensor and display the temperature; when the material support assembly is right opposite to the mounting frame, the infrared temperature measurement sensor is right opposite to the two end faces of a polycrystalline silicon bar placed on the material support assembly. The cooling system comprises a water cooling unit which is provided with a moving device, a water quenching device and a spraying device; a drying unit; and the temperature measuring unit is provided with a temperature measuring device. According to the utility model, temperature feedback can be carried out timely, accurately and efficiently, and temperature control is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of polysilicon production equipment, in particular to a temperature measuring device and a cooling system for a polysilicon rod breaking process. Background Technique

[0002] Currently, in the production industry of photovoltaic polysilicon raw materials, the improved Siemens process is mostly adopted. In the improved Siemens process, polysilicon usually has to go through a breaking process before it can finally form a silicon material packaging finished product.

[0003] In the currently used polysilicon breaking process, it is necessary to first cut polysilicon rods of equal length, heat them to a certain temperature in a special heating furnace, then quickly put them into cooling water, take them out by a mechanical device after cooling for a certain time, spray them with pure water to cool down, and then transfer them to air cutting and natural cooling and dehumidification. Affected by the diameter of the polysilicon rod and the length of time during the transfer process in the heating and cooling process, there will be certain differences in the heat accumulated by the polysilicon. The temperature of the polysilicon rod is high and low. If the temperature is too high, the subsequent conveyor line will be damaged. If the temperature is too low, water mist will appear after bagging, resulting in unqualified product quality.

[0004] Currently, the temperature control method for polysilicon rods after the heating furnace discharges mostly adopts manual operation, using a thermometer to measure multiple points multiple times. For silicon materials with too high temperature, they are manually taken out and put into use after cooling to a certain temperature, and the process is adjusted to a certain extent. However, due to the strong randomness of manual temperature measurement, the temperature measurement accuracy is insufficient, and the polysilicon rod is easily contaminated during the temperature measurement process. At the same time, it is inefficient and labor-consuming. Content of the Utility Model

[0005] The utility model provides a temperature measuring device and a cooling system for a polysilicon rod breaking process, which can improve the detection accuracy, detection efficiency and avoid contaminating the polysilicon rod to solve the problems in the prior art that the manual temperature measurement has insufficient accuracy due to strong randomness, is easy to contaminate the polysilicon rod during the temperature measurement process, and is inefficient and labor-consuming.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A temperature measuring device for a polysilicon rod breaking process includes:

[0008] A stepping mechanism having a conveyor belt, and a plurality of material support components are arranged on the conveyor belt;

[0009] A temperature measuring mechanism having mounting frames arranged on both sides of the conveyor belt, and a plurality of infrared temperature sensors respectively arranged on the inner sides of the two mounting frames; and

[0010] A temperature display controller that can receive the signals of the infrared temperature sensors and display the temperature;

[0011] Wherein, when the material support assembly faces the mounting rack, the infrared temperature sensors face the two end faces of the polysilicon rod placed on the material support assembly.

[0012] Further, the material support assembly includes two material supports, which are arranged adjacent to each other in the transmission direction of the conveyor belt. Three infrared temperature sensors are respectively arranged on the two inner side surfaces of the mounting rack, including:

[0013] A first infrared temperature sensor;

[0014] A second infrared temperature sensor, having the same height as the first infrared temperature sensor; and

[0015] A third infrared temperature sensor, which is arranged between the first infrared temperature sensor and the second infrared temperature sensor and is located above them.

[0016] Further, the material support at least has:

[0017] A bottom plate, which is connected to the bottom plates of adjacent material supports; and

[0018] Side plates; which are arranged on both sides above the bottom plate.

[0019] Further, the side plates are arranged to incline outwards.

[0020] Further, the temperature display controller is arranged on the outer side surface of the mounting rack and is electrically connected to the infrared temperature sensors.

[0021] A cooling system for a polysilicon rod breaking process, comprising:

[0022] A water cooling unit, which can take out the polysilicon rod and cool it down, and at least has a moving device, a water quenching device and a spraying device;

[0023] A drying unit, which can perform air cooling and dehumidification on the polysilicon rod processed by the water cooling unit; and

[0024] A temperature measuring unit, including the polysilicon rod breaking process temperature measuring device as described above, which can measure the temperature and transfer the polysilicon rod processed by the drying unit.

[0025] Further, it further includes a processing unit, and the processing unit is signal-connected to the temperature measuring unit and can prevent the abnormal operation of the system.

[0026] Further, the processing unit at least has an alarm module, and the alarm module is signal-connected to the temperature display controller of the temperature measuring unit.

[0027] Further, the processing unit at least has an emergency stop module, and the emergency stop module is respectively connected to the temperature display controller of the temperature measurement unit and the stepping mechanism in a signal connection manner, and can stop or start the stepping mechanism.

[0028] Further, the processing unit at least has a temperature adjustment module, and the temperature adjustment module is respectively connected to the temperature display controller of the temperature measurement unit, as well as the water quenching device and the spraying device of the water cooling unit in a signal connection manner, and can adjust the water temperature of the water quenching device and the spraying time of the spraying device.

[0029] The beneficial effects of the present utility model are as follows:

[0030] 1. The temperature measurement device for the polysilicon rod material crushing process of the present utility model fixes the position of the polysilicon rod material on the conveyor belt by setting the material support assembly on the stepping mechanism, and cooperates with the infrared temperature sensor on the inner side of the mounting frame to continuously monitor the temperatures of both ends of the polysilicon rod material, realizing efficient and accurate detection of the temperature condition of the polysilicon rod material, and being able to provide timely feedback through the temperature display controller, solving the problems in the prior art that the manual temperature measurement has strong randomness, insufficient temperature measurement accuracy, is prone to polluting the polysilicon rod material during the temperature measurement process, and is inefficient and labor-consuming at the same time;

[0031] 2. The cooling system for the polysilicon rod material crushing process of the present utility model can effectively control the temperature of the polysilicon rod material at the inlet of the temperature measurement unit by adjusting the water temperature of the water quenching device and the spraying time of the spraying device. Moreover, the temperature measurement unit can perform real-time continuous temperature monitoring, continuously feedback to the water quenching device and the spraying device, and reduce the probability of abnormal temperature conditions through real-time continuous temperature adjustment, improving the stability of the cooling system. Description of the Drawings

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0033] Figure 1 It is a three-dimensional schematic diagram of the temperature measurement device according to the embodiment of the present utility model;

[0034] Figure 2 It is a schematic diagram of the working principle of the temperature measurement device according to the embodiment of the present utility model;

[0035] Figure 3 It is a schematic diagram of the structure of the cooling system according to the embodiment of the present utility model.

[0036] Reference numerals: 100 - temperature measurement unit, 110 - stepping mechanism, 112 - conveyor belt, 114 - material support assembly, 1141 - bottom plate, 1142 - side plate, 120 - temperature measurement mechanism, 121 - first infrared temperature sensor, 122 - second infrared temperature sensor, 123 - third infrared temperature sensor, 124 - mounting bracket, 130 - temperature display controller;

[0037] 200 - water cooling unit, 220 - moving device, 230 - water quenching device, 240 - spraying device;

[0038] 300 - drying unit;

[0039] 400 - processing unit, 420 - alarm module, 440 - emergency stop module, 460 - temperature adjustment module. Detailed implementation manners

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0041] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention.

[0042] The embodiments of the present invention will be described in detail below with reference to the drawings.

[0043] Embodiment 1

[0044] Please refer to Figure 1 - Figure 2 , this embodiment provides a temperature measurement device for the polycrystalline silicon rod breaking process, which is used to transfer the polycrystalline silicon rod after water quenching and cooling in the breaking process and monitor its temperature, and can provide timely, accurate and efficient temperature feedback, which is beneficial for the user to control the temperature. The temperature measurement device for the polycrystalline silicon rod breaking process mainly includes: the stepping mechanism 110, the mounting bracket 124, the temperature display controller 130, etc.

[0045] The stepping mechanism 110 is an automated transmission line for transferring the polycrystalline silicon rod after water quenching and cooling in the breaking process. AsFigure 1 As shown, the stepping mechanism 110 has a conveyor belt 112, and a plurality of carrier components 114 are arranged on the conveyor belt 112, which are used to fix the position of the polysilicon rod on the conveyor belt 112, and can also prevent the relatively high-temperature fixed polysilicon rod from damaging the conveyor belt 112.

[0046] The temperature measuring mechanism 120 is fixedly installed on the side of the stepping mechanism 110 and is used to monitor the temperature of the polysilicon rod in real time. The temperature measuring mechanism 120 mainly has a mounting frame 124 and an infrared temperature sensor. Among them, the mounting frame 124 is arranged on both sides of the conveyor belt 112, and a cross beam is also connected between the mounting frames 124 on both sides to enhance the structural stability. A plurality of infrared temperature sensors are respectively arranged on the two inner side surfaces of the mounting frame 124, and the infrared energy radiated by the polysilicon rod is used to measure its temperature, and by simultaneously monitoring the temperatures on both sides, accidental errors are excluded, and the accuracy of temperature measurement is improved.

[0047] The temperature display controller 130 can receive the signals of the infrared temperature sensors and display the temperature, and is used to timely feedback the real-time temperature to the users.

[0048] When the temperature measuring device of this embodiment is in use, the carrier component 114 will move along with the operation of the stepping mechanism 110. When the carrier component 114 is facing the mounting frame 124, as Figure 2 shown, the infrared temperature sensors are facing the two end faces of the polysilicon rod placed on the carrier component 114 to detect the temperatures of the two end faces. Since the position of the polysilicon rod is fixed relative to the conveyor belt 112 by the carrier component 114, and at the same time the position of the infrared temperature sensors is fixed by the mounting frame 124, the position, temperature measurement angle, and temperature measurement distance of the temperature measurement points of the infrared temperature sensors on the polysilicon rod are basically kept fixed each time, so that the real temperature situation of the polysilicon rod can be more accurately reflected during continuous monitoring.

[0049] In this embodiment, the temperature measuring device for the polysilicon rod breaking process fixes the position of the polysilicon rod on the conveyor belt 112 by setting the carrier component 114 on the stepping mechanism 110, and cooperates with the infrared temperature sensors on the inner side surface of the mounting frame 124 to continuously monitor the temperatures of the two end faces of the polysilicon rod, realizing efficient and accurate detection of the temperature situation of the polysilicon rod, and can be timely feedback through the temperature display controller 130, solving the problems in the prior art that the manual temperature measurement has strong randomness, insufficient temperature measurement accuracy, is easy to contaminate the polysilicon rod during the temperature measurement process, and is inefficient and labor-consuming at the same time.

[0050] At the same time, in this embodiment, as Figure 1 , Figure 2As shown in the figure, the stock tray assembly 114 includes two stock trays, each for placing a polysilicon rod; and the two stock trays are adjacent to each other in the transmission direction of the conveyor belt 112, so that a third polysilicon rod can be placed above the two polysilicon rods. At the same time, three infrared temperature sensors are respectively arranged on the two inner sides of the mounting frame 124, including: a first infrared temperature sensor 121, a second infrared temperature sensor 122 and a third infrared temperature sensor 123. Among them, the second infrared temperature sensor 122 is at the same height as the first infrared temperature sensor 121; the third infrared temperature sensor 123 is arranged between the first infrared temperature sensor 121 and the second infrared temperature sensor 122 and above them, so that the three infrared temperature sensors can respectively monitor the temperatures of the two end faces of the three overlapping polysilicon rods, improving the temperature measurement efficiency.

[0051] Moreover, the stock tray in this embodiment has a bottom plate 1141 and side plates 1142. Among them, the bottom plate 1141 is connected to the bottom plates 1141 of adjacent stock trays and is used for placing polysilicon rods; the side plates 1142 are arranged on both sides above the bottom plate 1141 to prevent the polysilicon rods from moving. At the same time, both stock trays have side plates 1142 that are inclined outward. With the pressure exerted by the third polysilicon rod above the middle, the stability of the placement of the three polysilicon rods can be improved.

[0052] In addition, in this embodiment, the temperature display controller 130 is arranged on the outer side of the mounting frame 124 and receives signals by being electrically connected to a plurality of infrared temperature sensors, which is convenient for the on-site users. It should be noted that, in one or more embodiments, the temperature display controller 130 can also be arranged at different positions such as a control machine room or a control room to facilitate other users to obtain temperature information, and the way for the temperature display controller 130 to receive the signals of the infrared temperature sensors can be electrical connection, optical fiber connection or wireless signal transmission.

[0053] Embodiment 2

[0054] Please refer to Figure 3 , the second embodiment provides a cooling system for the polysilicon rod crushing process, which is used for the water quenching cooling and transfer of polysilicon rods in the crushing process, and can perform temperature feedback timely, accurately and efficiently, which is beneficial for the users to control the temperature. The cooling system for the polysilicon rod crushing process in the second embodiment mainly includes: a water cooling unit 200, a drying unit 300, a temperature measurement unit 100, etc.

[0055] The water-cooling unit 200 can take out the polysilicon rod material and cool it, and is used to take out the polysilicon rod material in the polysilicon heating furnace for water quenching and cooling. The water-cooling unit 200 at least has a moving device 220, a water quenching device 230 and a spraying device 240. In this embodiment, the moving device 220 is a robotic arm mechanism, which extends into the heating furnace to take out the polysilicon rod material and transfers it into the water quenching device 230; the water quenching device 230 is a constant-temperature water bath, which can adjust the appropriate temperature to perform water quenching on the polysilicon rod material in a high-temperature state. After the water quenching is completed, the moving device 220 then moves the polysilicon rod material out of the water quenching device 230 and moves it to the spraying device 240; the spraying device 240 has multiple spray heads and can control and adjust the length of the single spraying time.

[0056] The drying unit 300 can perform air-cooling and dehumidification on the polysilicon rod material processed by the water-cooling unit 200, and is used to remove moisture to facilitate subsequent transfer and crushing process operations. In this embodiment, the drying unit 300 mainly includes multiple circulating fans, which further control the temperature of the polysilicon rod material while drying and dehumidifying.

[0057] The temperature measurement unit 100 mainly includes the temperature measurement device for the polysilicon rod material crushing process in the first embodiment, which can measure the temperature and transfer the polysilicon rod material processed by the drying unit 300, and can perform temperature feedback in a timely, accurate and efficient manner, so as to facilitate the user to perform temperature control, so as to solve the problems in the prior art that the manual temperature measurement has strong randomness, insufficient temperature measurement accuracy, is easy to contaminate the polysilicon rod material during the temperature measurement process, and is inefficient and labor-consuming at the same time.

[0058] At the same time, the cooling system for the polysilicon rod material crushing process in this embodiment also includes a processing unit 400. The processing unit 400 is a control component that receives and processes temperature signals and performs specific in-system associated control according to the temperature signals. The processing unit 400 is signal-connected to the temperature measurement unit 100 to prevent abnormal operation of the system. It should be noted that in this embodiment, the signal connection can be a wire connection, an optical fiber connection or a wireless signal transmission. At the same time, the processing unit 400 has an alarm module 420, an emergency stop module 440, a temperature adjustment module 460, etc.

[0059] Among them, the alarm module 420 is signal-connected to the temperature display controller 130 of the temperature measurement unit 100, and can prompt the user after receiving a temperature signal exceeding the conventional limit value for timely manual processing. In this embodiment, the alarm module 420 mainly includes an audible and visual alarm.

[0060] The emergency stop module 440 is respectively connected to the temperature display controller 130 of the temperature measurement unit 100 and the stepping mechanism 110 in a signal connection manner. The emergency stop module 440 can, after receiving a temperature signal exceeding the absolute limit value, emergently stop the stepping mechanism 110; after receiving a normal temperature signal, it can restart the stepping mechanism 110 in an emergency stop state. Therefore, when the user is absent, the processing unit 400 can rely on the automatic response function of the emergency stop module 440 to avoid the expansion of abnormal situations and cause accidents.

[0061] The temperature adjustment module 460 is respectively connected to the temperature display controller 130 of the temperature measurement unit 100, as well as the water quenching device 230 and the spraying device 240 of the water cooling unit 200 in a signal connection manner, and can adjust the water temperature of the water quenching device 230 and the spraying time of the spraying device 240. Under the condition that the working time and power of the drying unit 300 are stable, by adjusting the water temperature of the water quenching device 230 and the spraying time of the spraying device 240, the temperature of the polysilicon rod material at the inlet of the temperature measurement unit 100 can be effectively controlled. Moreover, the temperature measurement unit 100 can conduct real-time continuous temperature monitoring and continuously feedback to the water quenching device 230 and the spraying device 240. Through real-time continuous temperature adjustment, the probability of abnormal temperature conditions is reduced, and the stability of the cooling system in this embodiment is improved.

[0062] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only the preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A temperature measuring device for a polysilicon rod crushing process, characterized in that: Include: A stepping mechanism (110) having a conveyor belt (112), wherein a plurality of material support assemblies (114) are arranged on the conveyor belt (112); A temperature measuring mechanism (120) comprising mounting frames (124) arranged on both sides of the conveyor belt (112), and a plurality of infrared temperature measuring sensors respectively arranged on two inner side surfaces of the mounting frames (124); and A temperature display controller (130) is capable of receiving a signal from the infrared temperature sensor and displaying the temperature; Wherein, when the material support assembly (114) faces the mounting frame (124), the infrared temperature measuring sensor faces both end surfaces of the polycrystalline silicon rod placed on the material support assembly (114).

2. The temperature measuring device for the polysilicon rod crushing process according to claim 1, characterized in that: The material tray assembly (114) comprises two material trays, the two material trays are arranged adjacent to each other in the transmission direction of the conveyor belt (112), and three infrared temperature measuring sensors are respectively arranged on two inner side surfaces of the mounting frame (124), including: A first infrared temperature sensor (121); A second infrared temperature measuring sensor (122) is at the same height as the first infrared temperature measuring sensor (121); and The third infrared temperature measuring sensor (123) is arranged between the first infrared temperature measuring sensor (121) and the second infrared temperature measuring sensor (122), and is located above both.

3. The temperature measuring device for the polysilicon rod crushing process according to claim 2, characterized in that: The material tray at least has: A bottom plate (1141) connected to the bottom plate (1141) of an adjacent tray; and Side plates (1142) are arranged on both sides above the bottom plate (1141).

4. The temperature measuring device for the polysilicon rod crushing process according to claim 3, characterized in that: The side panels (1142) are arranged to be inclined outwards.

5. The temperature measuring device for the polysilicon rod crushing process according to claim 1, characterized in that: The temperature display controller (130) is arranged on the outer side of the mounting frame (124) and is connected to the infrared temperature sensor by electric wire.

6. A polysilicon rod crushing process cooling system, characterized in that: Include: A water cooling unit (200) is capable of taking out polysilicon rods and cooling them down, and comprises at least a moving device (220), a water quenching device (230) and a spraying device (240); A drying unit (300) capable of air-cooling and dehumidifying the polysilicon rods processed by the water cooling unit (200); and The temperature measuring unit (100) comprises the temperature measuring device for the polysilicon rod crushing process according to any one of claims 1 to 5, and can measure the temperature and transport the polysilicon rods processed by the drying unit (300).

7. The polysilicon rod crushing process cooling system according to claim 6, characterized in that: It also comprises a processing unit (400), wherein the processing unit (400) is connected to the temperature measuring unit (100) by signal, and can prevent the system from operating abnormally.

8. The polysilicon rod crushing process cooling system according to claim 7, characterized in that: The processing unit (400) has at least one alarm module (420), and the alarm module (420) is connected to the temperature display controller (130) of the temperature measuring unit (100) by signal.

9. The polysilicon rod crushing process cooling system according to claim 7, characterized in that: The processing unit (400) has at least one emergency stop module (440), and the emergency stop module (440) is respectively connected to the temperature display controller (130) and the stepping mechanism (110) of the temperature measuring unit (100) by signals, and can stop or start the stepping mechanism (110).

10. The polysilicon rod crushing process cooling system according to claim 7, characterized in that: The processing unit (400) has at least one temperature regulating module (460), and the temperature regulating module (460) is respectively connected to the temperature display controller (130) of the temperature measuring unit (100), and the water quenching device (230) and the spraying device (240) of the water cooling unit (200) by signals, and can regulate the water temperature of the water quenching device (230) and the spraying time of the spraying device (240).

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