CN-224231288-U - Intelligent detection tool

Abstract

The utility model discloses an intelligent detection tool which comprises a detection circuit, a working circuit and a PLC module, wherein the working circuit is provided with a first relay and a three-phase electric parameter comprehensive tester, three-phase alternating current is connected with a warm air blower through the first relay, a voltage dividing resistor, a second relay and a second power supply are arranged on a detection line, the second power supply is connected with UV of the warm air blower through the second relay, the PLC module is connected with the first relay and the second relay, the PLC module detects voltage changes at two sides of the voltage dividing resistor through a circuit, the PLC module is connected with a detection sensor, the detection sensor is correspondingly arranged at an air outlet of the warm air blower, and the PLC module is connected with a temperature controller of the warm air blower through a feedback circuit.

Inventors

• FEI XIAOPING
• YANG KAI
• LIN YISHENG
• HU WEIJIE
• WU JIE
• ZHANG XINGGUANG
• CHANG JINMING
• ZHU LEI
• ZHANG WEIDONG
• ZHONG XIAOQIANG

Assignees

• 中国铁路广州局集团有限公司广州动车段

Dates

Publication Date

20260512

Application Date

20250722

Claims (8)

1. 1. The intelligent detection tool is characterized by comprising a detection circuit, a working circuit and a PLC module, wherein a first relay and a three-phase electric parameter comprehensive tester are arranged on the working circuit, three-phase alternating current is connected with a fan heater through the first relay, the three-phase electric parameter comprehensive tester is used for detecting voltage and current data of the working circuit, a divider resistor, a second relay and a second power supply are arranged on the detection circuit, the second power supply is connected with UV of the fan heater through the second relay, the first power supply is connected with the PLC module for supplying power, the PLC module is connected with the first relay and the second relay, the PLC module detects voltage changes at two sides of the divider resistor through a circuit, the PLC module is connected with a detection sensor, the detection sensor is correspondingly arranged at an air outlet of the fan heater, and the PLC module is connected with a temperature controller of the fan heater through a feedback circuit.
2. 2. The intelligent detection tool of claim 1, further comprising an operation panel in data connection with the PLC module.
3. 3. The intelligent detection tool according to claim 2, further comprising a master switch, wherein the master switch is connected to the PLC module and the operation panel.
4. 4. The intelligent detection tool according to claim 3, wherein a leakage protection device is further arranged on the working line, and three-phase alternating current is connected with the first relay through the leakage protection device.
5. 5. The intelligent detection tool according to claim 4, further comprising a tool box, wherein the master switch, the operation panel and the three-phase electrical parameter comprehensive tester are all arranged on the outer wall of the tool box, and the PLC module, the first power supply, the first relay, the second power supply and the leakage protection device are all arranged inside the tool box.
6. 6. The intelligent detection tool according to claim 5, wherein the tool box comprises a box body and a cover plate, one side of the box body is rotationally connected with one side of the cover plate through a hinge, the other side of the box body is detachably connected with the other side of the cover plate through a locking assembly, the main switch, the operation panel, the three-phase electric parameter comprehensive tester and the PLC module are fixedly arranged on the cover plate, and the first power supply, the first relay, the second power supply and the leakage protection device are fixedly arranged in the box body.
7. 7. The intelligent detection tool according to claim 6, wherein a wiring hole for penetrating a connecting pipeline is formed in the side face of the box body.
8. 8. The intelligent detection tool as claimed in claim 1, further comprising a heat-preserving cover correspondingly arranged at the position of the air blowing port of the fan heater.

Description

Intelligent detection tool Technical Field The utility model relates to the technical field of motor train unit detection, in particular to an intelligent detection tool. Background The main working principle of the conventional motor train unit fan heater is that after three-phase power supply is achieved by the fan heater, the fan heater is powered on, meanwhile, a heating rod of the fan heater is powered on to heat, air flow generated by the fan operation is heated by the heating rod and then is discharged through an air outlet below the fan heater, a temperature sensor is arranged at the air outlet, when the temperature of discharged warm air reaches 35 ℃, the temperature sensor gives out a trigger signal, the signal is transmitted to a control cabinet through a feedback interface of a temperature controller, at the moment, the power supply to the fan heater is cut off, the air flow temperature of the air outlet of the fan heater is controlled below 35 ℃, when the fan fails and stops running, the heating rod continuously heats air in the fan heater, the density is reduced due to thermal expansion of the hot air, the temperature sensor below cannot sense temperature signal change, so that the signal cannot be fed back normally, when the temperature of the air reaches 90 ℃, a first-stage temperature protection B1 above the heating rod is disconnected (when the temperature reaches 60 ℃, the temperature is reconnected), a loop is disconnected, the heating rod stops heating, when the first-stage temperature protection B1 fails and is disconnected automatically, the second-stage protection B1 is disconnected, the temperature is disconnected, and the second-stage protection fuse is disconnected, and the heating circuit is continued. The prior test mode includes that the warm air blower is powered, two probes of a universal meter are respectively connected to two pins of a feedback interface of the temperature controller in the process that a heating rod of the warm air blower continuously heats, whether a circuit is changed into a closed state from an open state along with the continuous rising of temperature is tested, a closed loop is formed to indicate that the temperature sensor is normal in function, and the temperature controller is normal in feedback function. In view of the above drawbacks, the present inventors have finally achieved the present utility model through long-time studies and practices. Disclosure of utility model In order to solve the technical defects, the intelligent detection tool comprises a detection line, a working line and a PLC module, wherein the working line is provided with a first relay and a three-phase electrical parameter comprehensive tester, three-phase alternating current is connected with a fan heater through the first relay, the three-phase electrical parameter comprehensive tester is used for detecting voltage and current data of the working line, the detection line is provided with a voltage dividing resistor, a second relay and a second power supply, the second power supply is connected with UV of the fan heater through the second relay, the first power supply is connected with the PLC module for supplying power, the PLC module is connected with the first relay and the second relay, the PLC module detects voltage changes at two sides of the voltage dividing resistor through a circuit, the PLC module is connected with a detection sensor, the detection sensor is correspondingly arranged at an air outlet of the fan heater, and the fan heater is connected with a temperature controller through a feedback circuit. Preferably, the intelligent detection tool further comprises an operation panel, and the operation panel is in data connection with the PLC module. Preferably, the intelligent detection tool is further provided with a master switch, and the master switch is connected with the PLC module and the operation panel. Preferably, a leakage protection device is further arranged on the working line, and the three-phase alternating current is connected with the first relay through the leakage protection device. Preferably, the intelligent detection tool further comprises a tool box body, the main switch, the operation panel and the three-phase electrical parameter comprehensive tester are all arranged on the outer wall of the tool box body, and the PLC module, the first power supply, the first relay, the second power supply and the leakage protection device are all arranged in the tool box body. Preferably, the tool box comprises a box body and a cover plate, wherein one side of the box body is rotationally connected with one side of the cover plate through a hinge, the other side of the box body is detachably connected with the other side of the cover plate through a locking assembly, the main switch, the operation panel, the three-phase electric parameter comprehensive tester and the PLC module are fixedly arranged on the cover plate, and the first power supply, the fir