Cable terminal heating simulation device under different loads

Abstract

A cable terminal heating simulation device under different loads is characterized in that a control box (2) of a box body structure is installed in the middle of a supporting frame (1), a 35kV terminal sleeve (3) is arranged at the top of the control box (2), and a wire outlet rod terminal (4) is arranged on the 35kV terminal sleeve in a sleeving mode; a heating resistor (205) is wrapped in the 35kV terminal sleeve (3); and the wire outlet rod terminal (4) is consistent with a real 35kV terminal. According to the cable terminal heating simulation device under different loads, the control box is connected with the heating resistor, different types of cable heating faults are simulated through the heating temperature of the heating resistor, the heating loop is controlled through the temperature regulator, temperature control can be completed, the training efficiency is improved, and the training cost is reduced. The problem of lack of practical training experience in field practical training when cable outgoing line faults occur is avoided.

Description

Technical Field

[0001] The utility model relates to a training system, in particular to a cable terminal heating simulation device under different loads. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] Infrared temperature measurement and diagnosis technology can quickly monitor and diagnose most faults of power cables online in real time, preventing large-scale power outages caused by power cable failures. Therefore, the development of infrared diagnosis technology in recent years has played a vital role in ensuring the safe operation of power cables and timely discovering cable safety hazards.

[0004] Infrared temperature measurement is an important detection method for live cable line detection and status evaluation. The infrared detection results directly affect the accurate judgment of the equipment status. Therefore, the operation proficiency and defect judgment accuracy of infrared detection personnel are very important. However, the inventor found that since infrared detection abnormalities rarely occur in normally operating lines, it is impossible for technicians to comprehensively study and judge different types of cable faults and the temperatures of different hot spots under different types of cable faults; and for simulation devices, how to simulate various types of cable heating faults in the line and control the hot spots are technical problems that need to be solved at present. Utility Model Content

[0005] In order to solve the above problems existing in the prior art, the utility model provides a cable terminal heating simulation device under different loads.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A cable terminal heating simulation device under different loads, comprises a support frame 1 with a frame structure, a control box 2 with a box structure is installed in the middle of the support frame 1, a 35kV terminal bushing 3 is arranged on the top of the control box 2, and a lead-out rod terminal 4 is sleeved on the 35kV terminal bushing; a heating resistor 205 is wrapped inside the 35kV terminal bushing 3; the lead-out rod terminal 4 is consistent with a real 35kV terminal; the outer end of the main line 201 of the control box 2 is connected to an external power supply, the inner end of the main line 201 is connected to a control switch 202, the control switch 202 is connected to a temperature regulator 203, the temperature regulator 203 is connected to a temperature display 204, and the temperature display 204 is connected to the heating resistor 205; the heating temperature of the heating resistor 205 is adjusted by the temperature regulator 203, the temperature display 204 has a temperature sensor, and the temperature of the heating resistor 205 is displayed on the temperature display 204.

[0008] The utility model also has the following additional technical features:

[0009] As a further specific optimization of the technical solution of the utility model: the temperature regulator 203 has an adjustment knob, and the heating temperature flowing through the heating resistor 205 can be changed by turning the adjustment knob, and the heating power adjustment range is P=0W-150W.

[0010] As a further specific optimization of the technical solution of the utility model: the signal line of the temperature display 204 is connected to the control switch 202, the signal line of the temperature sensor is connected to the control switch 202, and the temperature information transmitted by the temperature sensor is output to the temperature display 204 through the data output port of the control switch 202 for real-time display.

[0011] As a further specific optimization of the technical solution of the utility model: the heating resistors 205 are all nickel-chromium heating wires with a diameter of 0.25 mm and a length of 50 mm. The nickel-chromium heating wires are fixed on the 35kV terminal bushing 3 in a winding manner, and all winding parts are insulated through the outlet rod terminal 4.

[0012] As a further specific optimization of the technical solution of the utility model: the temperature sensor is a thermocouple temperature sensor, and its temperature measurement range is T=0°-300°; the temperature sensors are fixed on the heating resistor 205 respectively with heat-resistant tape.

[0013] As a further specific optimization of the technical solution of the utility model: the external power supply provides a 220V AC power supply.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] The utility model simulates the cable heating device by connecting the control box 2 with the heating resistor 205, and simulates different types of cable heating failures through the heating temperature of the heating resistor 205. The heating circuit is controlled by the temperature regulator 203, so as to complete the temperature control, improve the training efficiency, and avoid the problem of lack of practical training experience during on-site training when the cable outlet fails. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the circuit structure of the utility model;

[0018] Explanation of the reference numerals: support frame 1, control box 2, 35kV terminal bushing 3, outlet rod terminal 4. DETAILED DESCRIPTION

[0019] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0020] A cable terminal heating simulation device under different loads, comprises a support frame 1 with a frame structure, a control box 2 with a box structure is installed in the middle of the support frame 1, a 35kV terminal bushing 3 is arranged on the top of the control box 2, and a lead-out rod terminal 4 is sleeved on the 35kV terminal bushing; a heating resistor 205 is wrapped inside the 35kV terminal bushing 3; the lead-out rod terminal 4 is consistent with a real 35kV terminal; the outer end of the main wire 201 of the control box 2 is connected to an external power supply, and the external power supply provides a 220V AC power supply.

[0021] The temperature regulator 203 has an adjustment knob, and the heating temperature of the current flowing through the heating resistor 205 can be changed by turning the adjustment knob. The heating power adjustment range is P=0W-150W.

[0022] The heating resistors 205 are all nickel-chromium heating wires with a diameter of 0.25 mm and a length of 50 mm. The nickel-chromium heating wires are fixed to the 35kV terminal bushing 3 in a winding manner, and all winding parts are insulated through the outlet rod terminal 4.

[0023] The signal line of the temperature display 204 is connected to the control switch 202, and the signal line of the temperature sensor is connected to the control switch 202. The temperature information transmitted by the temperature sensor is output to the temperature display 204 through the data output port of the control switch 202 for real-time display. The temperature sensors are fixed to the heating resistor 205 with heat-resistant tape.

[0024] Working principle of cable terminal heating simulation device:

[0025] The inner end of the main power line 201 is connected to the control switch 202, the control switch 202 is connected to the temperature regulator 203, the temperature regulator 203 is connected to the temperature display 204, and the temperature display 204 is connected to the heating resistor 205. The external power supply provides 220V AC power, the control switch 202 is turned on, the heating resistor 205 starts to heat up, and the temperature display 204 has a temperature sensor to display the temperature of the heating resistor 205 on the temperature display 204. When the heating resistor 205 does not heat up enough or heats up too much, the temperature regulator 203 adjusts the heating time of the heating resistor 205 so that the heating of the heating resistor 205 is maintained at a substantially constant temperature.

[0026] The above detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention but merely represents selected embodiments of the present invention.

Claims

1. A device for simulating heating of cable terminals under different loads, characterized in that: The invention comprises a support frame (1) in a frame structure, a control box (2) in a box structure is installed in the middle of the support frame (1), a 35kV terminal bushing (3) is arranged on the top of the control box (2), and a lead-out rod terminal (4) is sleeved on the 35kV terminal bushing; a heating resistor (205) is wrapped inside the 35kV terminal bushing (3); the lead-out rod terminal (4) is consistent with a real 35kV terminal; the outer end of the main wire (201) of the control box (2) is connected to an external power supply, and the main wire (201) is connected to the external power supply. The inner end of the wire (201) is connected to the control switch (202), the control switch (202) is connected to the temperature regulator (203), the temperature regulator (203) is connected to the temperature display (204), and the temperature display (204) is connected to the heating resistor (205); the heating temperature of the heating resistor (205) is adjusted by the temperature regulator (203), and the temperature display (204) is equipped with a temperature sensor, and the adjusted temperature of the heating resistor (205) is displayed on the temperature display (204); The temperature regulator (203) is provided with an adjustment knob, and the heating temperature of the heating resistor (205) can be changed by turning the adjustment knob, thereby adjusting the heating power of the heating resistor (205), and the heating power adjustment range is P=0W-150W; The signal line of the temperature display (204) is connected to the control switch (202), the signal line of the temperature sensor is connected to the control switch (202), and the temperature information transmitted by the temperature sensor is output to the temperature display (204) through the data output port of the control switch (202) for real-time display; The heating resistors (205) are all nickel-chromium heating wires, with a diameter of 0.25 mm and a length of 50 mm. The nickel-chromium heating wires are fixed to the 35 kV terminal bushing (3) in a winding manner, and all winding parts are insulated through the outlet rod terminal (4); The temperature sensor is a thermocouple type temperature sensor, and its temperature measurement range is T=0°-300°; the temperature sensors are fixed on the heating resistor (205) respectively with heat-resistant tape; The external power supply provides 220V AC power.

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