A silicon-carbon rod preheating detection device

Abstract

The utility model relates to electric heating element detection technical field, concretely is a kind of silicon-carbon rod preheating detection device, it includes box and the cover plate of being arranged at the top of box, the inside of box is equipped with cavity, the installation end for installing silicon-carbon rod to be detected is equipped in the length direction both ends of box;The side wall on the length direction of box is equipped with observation window;The side wall on the length direction of box is fixed and is equipped with multiple electrothermal couple, and the electrothermal couple includes the detection part being placed in the inside of box, the first connecting part being fixedly connected with box side wall, and the second connecting part being placed in the outside of box for being connected with electrothermal couple detection device, when using state, the detection part is placed above or below the detection part of silicon-carbon rod to be detected, and the second part is connected with electrothermal couple detection device through connecting line.The utility model can observe the heating state of silicon-carbon rod and measure the temperature near each part in real time, and high accuracy.

Description

Technical Field

[0001] This utility model relates to the field of electric heating element testing technology, specifically to a silicon carbide rod preheating testing device. Background Technology

[0002] Silicon carbide heating elements are commonly used non-metallic high-temperature heating elements, possessing advantages such as high hardness, resistance to rapid heating and cooling, and good chemical stability. Before leaving the factory or being used in a machine, silicon carbide heating elements need to undergo performance testing, mainly including: heating behavior and resistance changes under different power levels, uniformity of heating in different parts, and the presence of abnormal heating points. Currently, the preheating testing of silicon carbide heating elements suffers from limitations such as difficulty in real-time observation of the heating status and measurement of the temperature of different sections, indicating that the accuracy of preheating testing needs improvement. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings in the aforementioned background technology by providing a silicon carbide rod preheating detection device. This device facilitates real-time observation of the heating state of the silicon carbide rod and real-time measurement of the temperature of each section of the silicon carbide rod during preheating detection, thereby improving the accuracy of silicon carbide rod preheating detection.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a silicon carbide rod preheating detection device, comprising a housing and a cover plate disposed on the top of the housing, wherein the housing has an internal cavity, and its structural feature is that the housing has mounting ends for mounting the silicon carbide rod to be tested at both ends in the longitudinal direction; the housing has an observation window on its longitudinal side wall; and multiple thermocouples are fixedly inserted through the longitudinal side wall of the housing, each thermocouple comprising a detection part disposed inside the housing, a first connecting part fixedly connected to the side wall of the housing, and a second connecting part disposed outside the housing for connecting to the thermocouple detection device. In use, the detection part is positioned above or below the detection part of the silicon carbide rod to be tested, and the second part is connected to the thermocouple detection device via a connecting wire.

[0005] The aforementioned silicon carbide rod preheating detection device allows inspectors to observe the real-time heating status of the silicon carbide rod inside the chamber through an observation window. By arranging multiple thermocouples along the length of the chamber, the temperature near each measuring point of the silicon carbide rod can be measured simultaneously, accurately assessing the uniformity of its axial heating. Combined with external testing equipment, comprehensive performance data of the silicon carbide rod under different power levels can be obtained, improving the accuracy of silicon carbide rod preheating detection.

[0006] Furthermore, a first insulation layer is fixedly provided on the inner surface of the enclosure; a second insulation layer is fixedly provided on the bottom surface of the cover plate. This ensures the insulation effect of the cavity.

[0007] Furthermore, the cover plate is a cover plate that can be opened movably.

[0008] Furthermore, the cover plate includes a top plate, the bottom surface of which is fixedly provided with the second insulation layer, and the top surface of which is fixedly provided with a handle. This facilitates the installation of the silicon carbide rod.

[0009] Furthermore, the mounting end is a mounting groove. The bottom of the mounting end is semi-circular. This facilitates convenient installation of the mounting end while ensuring easy fixation of the silicon carbide rod.

[0010] Furthermore, a support structure is provided at the bottom of the box.

[0011] Furthermore, the support structure includes support feet fixedly mounted at the bottom of the housing. This facilitates the movement and handling of the device while preventing damage to the housing during movement.

[0012] Furthermore, the distance between the detection part and the silicon carbide rod to be detected is 1cm-6cm. This allows for more accurate detection of localized heating of the silicon carbide rod while ensuring convenient installation and portability.

[0013] Furthermore, the observation window is a strip-shaped glass observation window. This allows testing personnel to conveniently observe the heating status of the entire silicon carbide rod inside the chamber.

[0014] Furthermore, the number of thermocouples is 3-7. This ensures that each segment of the silicon carbide rod can be tested, guaranteeing the accuracy of the testing.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting an observation window, the testing personnel can observe the real-time heating status of the silicon carbide rod inside the chamber; by arranging multiple thermocouples along the length of the chamber, the temperature at each measuring point of the silicon carbide rod can be measured simultaneously, accurately assessing the uniformity of its axial heating; combined with external testing equipment, the performance data of the silicon carbide rod under different power levels can be comprehensively obtained, improving the accuracy of silicon carbide rod preheating testing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of one embodiment of the present invention (with the cover plate open); Figure 2 This is a schematic diagram of the structure of one embodiment of the present invention (with the cover closed); Figure 3 for Figure 2 The front view; Figure 4 for Figure 3 Side view.

[0017] In the diagram: 1. Enclosure; 101. Cavity; 2. Cover; 201. Base plate; 202. Second insulation layer; 203. Handle; 3. Observation window; 4. Thermocouple; 5. Mounting slot; 6. Silicon carbide rod to be tested; 7. Support; 8. Power cord. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" used below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0019] like Figures 1-4 As shown, a silicon carbide rod preheating detection device according to this embodiment includes a housing 1 and a cover plate 2 disposed on the top of the housing 1. The housing 1 has a cavity 101 inside. The housing 1 has mounting ends 5 at both ends in its length direction for mounting the silicon carbide rod 6 to be tested. The housing 1 has an observation window 3 on its side wall in its length direction. Multiple thermocouples 4 are fixedly inserted through the side wall in its length direction. Each thermocouple 4 includes a detection part placed inside the housing 1, a first connecting part fixedly connected to the side wall of the housing 1, and a second connecting part placed outside the housing 1 for connecting to the thermocouple detection device. In use, the detection part is placed above or below the detection part of the silicon carbide rod 6 to be tested, and the second part is connected to the thermocouple detection device through a connecting wire.

[0020] In this embodiment, the housing 1 is welded from metal plates, specifically steel plates. A first insulation layer is bonded and fixed to the inner surface of the housing 1. The cover plate 2 is a metal cover plate, and a second insulation layer 202 is bonded and fixed to the bottom surface of the cover plate 2. Both the first and second insulation layers are ceramic fiber layers, thereby ensuring the insulation effect of the cavity.

[0021] In other embodiments, the first insulation layer and the second insulation layer may be made of other high-temperature resistant insulation materials.

[0022] like Figure 1 As shown, in this embodiment, the cover plate 2 is a movable cover plate. The cover plate 2 includes a top plate 201, the bottom surface of which is fixedly provided with the second insulation layer 202, and a handle 203 is fixedly provided on the top plate 201. This facilitates the installation of the silicon carbide rod.

[0023] like Figure 1 , Figure 2 and Figure 4As shown, in this embodiment, the mounting end 5 is a mounting groove. The bottom of the mounting end 5 is semi-circular. This facilitates convenient installation of the mounting end while ensuring easy fixation of the silicon carbide rod.

[0024] like Figures 1-4 As shown, in this embodiment, the bottom of the housing 1 is provided with a support structure 7. The support structure 7 includes support feet fixedly disposed at the bottom end of the housing 1. This facilitates the movement and handling of the device while preventing damage to the housing from the moving device.

[0025] In this embodiment, the distance between the detection part and the silicon carbide rod 6 to be detected is 1cm-6cm. This allows for more accurate detection of localized heating of the silicon carbide rod while ensuring convenient installation and portability.

[0026] like Figure 1 As shown, a strip-shaped through-hole is provided on the side wall of the housing 1 along its length as an observation port. An observation window 3 is fixedly installed in the strip-shaped through-hole. The observation window 3 includes high-temperature resistant quartz glass and a window frame. The observation window is fixed to the observation port by high-temperature resistant sealant to ensure airtightness. In some embodiments, the outer surface of the observation window is flush with the outer surface of the housing, thereby ensuring the neatness of the outer surface of the housing. In some embodiments, the outer surface of the observation window protrudes from the outer surface of the housing, thereby facilitating the replacement of the observation window. The specific configuration can be set according to actual needs. In this embodiment, the observation window 3 is a strip-shaped glass observation window, thereby allowing the testing personnel to conveniently observe the heating status of the entire silicon carbide rod inside the housing.

[0027] like Figure 1 As shown, seven thermocouples 4 are installed on the side wall of the housing 1 above the observation window 3. They are evenly arranged horizontally, with their sensing parts extending into the insulation cavity to detect the temperature at various locations on the silicon carbide rod. This ensures that each section of the silicon carbide rod can be tested, guaranteeing the accuracy of the detection. Threaded mounting holes are provided on the side wall of the housing 1, and the outer wall of the middle portion of the thermocouple has an external thread structure. The thermocouple is fixedly connected to the housing via this threaded structure.

[0028] like Figure 1 As shown, in this embodiment, the length of the housing 1 is less than the length of the silicon carbide rod 6 to be tested.

[0029] The device in this embodiment is tested according to the following steps: 1. Open the cover and place the silicon carbide rod to be tested horizontally into the mounting slots at both ends. The electrode portions at both ends of the silicon carbide rod 6 are exposed outside the housing 1 for easy connection of the power cord.

[0030] 2. Close the cover plate and connect the electrodes at both ends of the silicon carbide rod to the controllable power supply consisting of a power regulator and a transformer. The silicon carbide rod heating device adopts existing technology. Connect the second connection part of each thermocouple 4 to the thermocouple detection device through the connecting wire. The thermocouple detection device adopts existing device. The thermocouple detection device can be selected according to actual needs. The thermocouple device and its connection relationship will not be described in detail here.

[0031] 3. Turn on the power and gradually adjust the power to make the silicon carbide rod start heating up, and the thermocouple detection device will start real-time detection.

[0032] 4. Visually inspect the silicon carbide rod through the observation window to check whether the heating is uniform and whether there are any abnormal spots that are too bright or too dark.

[0033] 5. Under different power settings, record the voltage U and current I provided by the power supply (the resistance R = U / I can be calculated), and at the same time record the temperature values ​​T1, T2...T7 measured by each thermocouple.

[0034] 6. The silicon carbide rod can be kept at a specific temperature (e.g., 1000℃) for a period of time (e.g., 24 hours), and the above data can be measured again and compared with the initial data to evaluate its long-term operational stability.

[0035] 7. Based on all test data, comprehensively judge whether the performance of the silicon carbide rod meets the requirements for use in the machine.

[0036] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0037] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A silicon-carbon rod preheating detection device, comprising a box (1) and a cover plate (2) arranged on the top of the box (1), and a cavity (101) is arranged in the interior of the box (1), characterized in that, The housing (1) has mounting ends (5) for mounting silicon carbide rods (6) to be tested at both ends along its length; the housing (1) has observation windows (3) on its side walls along its length; the housing (1) has multiple thermocouples (4) fixedly mounted on its side walls along its length. Each thermocouple (4) includes a detection part placed inside the housing (1), a first connection part fixedly connected to the side wall of the housing (1), and a second connection part placed outside the housing (1) for connecting to a thermocouple detection device. In use, the detection part is placed above or below the detection area of ​​the silicon carbide rod (6) to be tested, and the second connection part is connected to the thermocouple detection device via a connecting line.

2. The silicon carbide rod preheating detection device according to claim 1, characterized in that, The inner surface of the box (1) is fixedly provided with a first heat insulation layer; the bottom surface of the cover plate (2) is fixedly provided with a second heat insulation layer (202).

3. The silicon-carbon rod preheating detection device according to claim 2, characterized in that, The cover plate (2) is a cover plate that can be opened.

4. The silicon carbide rod preheating detection device according to claim 3, characterized in that, The cover plate (2) includes a top plate (201), the bottom surface of the top plate (201) is fixedly provided with the second insulation layer (202), and the top surface of the top plate (201) is fixedly provided with a handle (203).

5. The silicon carbide rod preheating detection device of claim 1, wherein, The mounting end (5) is a mounting groove, and the bottom of the mounting end (5) is semi-circular.

6. The silicon carbide rod preheating detection device of claim 1, wherein, The bottom of the box (1) is provided with a support structure (7).

7. The silicon carbide rod preheating detection device of claim 6, wherein, The support structure (7) includes a support foot fixedly disposed at the bottom end of the box (1).

8. The silicon carbide rod preheat detection apparatus of any one of claims 1-7, wherein, The distance between the detection part and the silicon carbide rod (6) to be detected is 1cm-6cm.

9. The silicon carbide rod preheating detection device of any one of claims 1-7, wherein, The observation window (3) is a strip-shaped glass observation window.

10. The silicon carbide rod preheat detection apparatus of any one of claims 1-7, wherein, The number of thermocouples (4) is 3-7.

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