一种硅碳加热棒检测机
By designing a silicon carbide heating rod testing machine and employing a pressure cylinder and resistance detection circuit, efficient and accurate testing of silicon carbide heating rods was achieved, solving the problem of low reliability in manual testing and improving testing efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 祁丽君
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, the detection of silicon carbide heating rods relies on manual handheld meters, which suffers from low reliability, low efficiency, and is prone to false readings, affecting production quality.
A silicon carbide heating rod testing machine was designed, including a frame, an electrical cabinet, and a heating rod testing support. A pressure cylinder is used to ensure that the testing terminals are in close contact with the electrodes of the heating rod. The electrical cabinet is equipped with a resistance detection circuit and a control circuit, which can accurately control the voltage and current, has multiple protection functions, and supports the simultaneous testing of multiple heating rods.
It improves the accuracy and efficiency of testing, avoids false tests, ensures the stability and security of test results, and meets the needs of batch testing.
Smart Images
Figure CN224518635U_ABST
Abstract
Claims
1. A silicon-carbon heating rod detection machine, characterized in that, It includes a frame, an electrical cabinet, and a heating rod detection support mounted on the frame. The detection support has a heating rod placement station and corresponding detection terminals. The electrical ends of the heating rod are inserted into the detection terminals. The electrical cabinet is connected to the detection terminals via a cable.
2. The silicon-carbon heating rod detection machine according to claim 1, characterized in that, The frame is equipped with a test terminal bracket and a pressure cylinder. The pressure cylinder is horizontally fixed on the test terminal bracket, and the test terminal is fixed to the end of the piston rod of the pressure cylinder.
3. The silicon-carbon heating rod detection machine according to claim 1, wherein, The testing support is equipped with two or more heating rod placement stations, which allows for the simultaneous testing of two or more heating rods.
4. The silicon-carbon heating rod detection machine according to claim 1, wherein, The frame includes support legs, crossbeams, panels, diagonal bracing plates, and foot cups. The support legs, diagonal bracing plates, crossbeams, and panels are welded into an integrated frame structure. The foot cups are installed on the support legs by screws and can be adjusted in height ≥100mm.
5. A silicon carbide heating rod testing machine according to claim 1, characterized in that, The electrical cabinet is equipped with a resistance detection circuit, which includes an incoming line module, a power regulator, a multi-tap transformer, and a voltage divider assembly. The core main circuit is: incoming line → air switch → power regulator → transformer → voltage divider assembly → resistor under test. The incoming line module is connected to an external power supply cable, which is protected against overcurrent / short circuit by the air switch, and leads out L and N lines. The power regulator is connected in series with the incoming line module and uses thyristors / IGBT power electronic devices to achieve power regulation. Its output is connected to the primary side of the multi-tap transformer. The multi-tap transformer switches the voltage through taps, and its secondary output is connected to the voltage divider assembly, which finally applies power to the resistor under test to complete the power transmission.
6. The silicon carbide heating rod detection machine of claim 5, wherein, A fast-acting fuse is connected in series between the air switch and the power regulator.
7. The silicon carbide heating rod detection machine of claim 5, wherein, The resistance detection circuit is equipped with a control loop, which includes a circuit breaker, intermediate relay KA1, gear shift switch SA, contactor KM1, and current transformer CT. The circuit breaker control loop provides overall protection and cuts off the control power supply in case of overload / short circuit. The coil of intermediate relay KA1 is connected to the control power supply, and its contacts are used for low-voltage control of high-voltage, triggering signals from the power regulator and indicator lights. The gear shift switch changes the control loop path when switching. The coil of contactor KM1 is controlled by gear shift switch SA and intermediate relay KA1, and its main contacts are connected in series with the main circuit to realize the on / off switching of the main circuit. The secondary output of current transformer CT is connected to the instrument / protection circuit, and auxiliary contacts can also be configured to cut off the power supply to the KM1 coil in case of overcurrent, realizing overcurrent protection linkage.
8. The silicon carbide heating rod detection machine of claim 5, wherein, The resistance detection circuit is equipped with a detection and display loop, including a power resistor, a display instrument, and an indicator light. The voltage sampling terminal of the power resistor is connected to the low-voltage side of the voltage divider component to collect the voltage U across the resistor under test. The current sampling terminal is connected to the secondary side of the transformer to collect the current I under test. The resistance value is calculated by R=U / I. The display instrument receives the output signal from the power resistor meter, or is directly connected to the voltage divider assembly or current transformer (CT), displaying voltage, current, resistance, and power; the power indicator light is connected to the output of the control power circuit breaker, and the running indicator light is connected to the main contact of contactor KM1, which illuminates when the main circuit is energized; the fault indicator light is connected to the overcurrent protection contact, which illuminates promptly when a fault occurs in the equipment, reminding the operator to take action.