Quick tester for performance of plug-in relay

Abstract

The utility model belongs to the technical field of electrical equipment maintenance, and specifically relates to a plug-in relay performance rapid tester. Comprising a control and data processing unit, a man-machine operation module, a fixed power supply module, an adjustable power supply module, a voltage grade selection switch, a data acquisition unit, an alarm unit, a protection unit, a storage unit and a heat dissipation unit, the control and data processing unit is respectively connected with the man-machine operation module, the fixed power supply module, the adjustable power supply module, the voltage level selection switch, the data acquisition unit, the alarm unit, the protection unit and the heat dissipation unit, and the man-machine operation module is also respectively connected with the fixed power supply module and the storage unit. The utility model has the advantages that: through the device, voltage loading can be automatically carried out on a relay coil, action voltage and return voltage can be automatically recorded, various performance parameters of a relay can be automatically calculated, an alarm can be given for unqualified test parameters, test results can be automatically recorded, and a report can be formed.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical equipment maintenance, and in particular relates to a plug-in relay performance quick tester. Background Art

[0002] During the electrical maintenance of nuclear power plants during overhaul, there are a large number of plug-in relays and a wide variety of types. The window for operation and maintenance during the overhaul of nuclear power plants is short and tight, and the maintenance work requires high requirements in terms of efficiency, quality and safety. The traditional plug-in relay calibration process requires repeated wiring, which takes up a lot of overhaul time. There are risks of electric shock, equipment safety hazards and human risks during the calibration process. At present, the tools for relay calibration are large in size and inconvenient to use. Plug-in relays are used in large numbers. According to statistics, the number of plug-in relays maintained by the relay protection department of a certain power station alone reached more than 9,300, with an average of more than 1,000 per unit. Centralized maintenance during the unit refueling overhaul takes up a lot of manpower and time windows.

[0003] The number and timing of the plug-in relays must be accurately calibrated during the pre-maintenance window. Once a calibration error occurs, damaged relays or relays with excessive contact resistance or coil resistance will continue to work in the system, which may cause malfunction or refusal to operate during daily operation. Relays in critical positions may even affect the operability of the unit.

[0004] During the electrical maintenance process during the overhaul of a nuclear power plant, there are a large number of plug-in relays and many types. The window for pre-maintenance work during the overhaul of a nuclear power plant is short and compact, and the maintenance work requires very high requirements from the perspectives of efficiency, quality and safety. The traditional plug-in relay calibration process requires repeated wiring, which takes up a lot of overhaul time. There are risks of electric shock, safety hazards and human risks during the calibration process.

[0005] Therefore, in order to calibrate the plug-in relay more accurately and quickly and reduce human errors, the development of automatic / semi-automatic plug-in relay calibration equipment is particularly important. Utility Model Content

[0006] The utility model aims to provide a plug-in relay performance rapid tester, which can reduce the time and personnel requirements for overhaul electrical maintenance and improve efficiency and safety.

[0007] The technical solution of the utility model is as follows: a plug-in relay performance rapid tester, including a control and data processing unit, a man-machine operation module, a fixed power supply module, an adjustable power supply module, a voltage level selection switch, a data acquisition unit, an alarm unit, a protection unit, a storage unit and a heat dissipation unit, wherein the control and data processing unit are respectively connected to the man-machine operation module, the fixed power supply module, the adjustable power supply module, the voltage level selection switch, the data acquisition unit, the alarm unit, the protection unit and the heat dissipation unit, and the man-machine operation module is also respectively connected to the fixed power supply module and the storage unit.

[0008] The control and data processing unit collects the voltage and current parameters of each branch collected by the data collection unit, compares them with the set values, determines whether an alarm or protective measures are needed, and sends signals to the alarm unit and the protection unit to execute relevant alarm and protection logic.

[0009] The human-machine operation module is used to interact with the display control and data processing unit, input control instructions, modify system parameters, and display data sent by the control and data processing unit in real time.

[0010] The fixed power supply module is used to provide power to the control and data processing unit, the human-machine operation module and other modules requiring power.

[0011] The adjustable power supply module is used to receive control instructions from the control and data processing unit, and output corresponding voltage according to the instructions.

[0012] The voltage level selection switch is a 6-speed selection switch, which is used to switch to relay test circuits of different voltage levels.

[0013] The data acquisition unit is used to collect the voltage and current of the relay coil loop, and the current of the relay normally open contact test loop and the normally closed contact test loop, and transmit the above signals to the control and data processing unit in real time.

[0014] The alarm unit generates sound and light alarms according to the instructions issued by the control and data processing unit.

[0015] The protection unit protects the coil during the coil voltage loading process according to the instructions issued by the control and data processing unit, and cuts off the loading circuit when the voltage is greater than the rated voltage of the coil.

[0016] The storage unit is used to store the test records, the human-machine operation module can query and view the test records, and the heat dissipation unit is used to cool and dissipate heat.

[0017] The advantages of the utility model are: through the utility model, the voltage can be automatically loaded on the relay coil, the operating voltage and return voltage can be automatically recorded, the various performance parameters of the relay can be automatically calculated, the unqualified test parameters can be alarmed, the test results can be automatically recorded and a report can be formed. The use of the utility model not only avoids repeated wiring in the previous test process, reduces labor intensity and error rate, and improves test safety, but also ensures the overhaul schedule of the unit, saving time and labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a schematic diagram of the plug-in relay performance rapid tester provided by the utility model. DETAILED DESCRIPTION

[0019] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] like Figure 1 As shown, the plug-in relay performance rapid tester includes a control and data processing unit 1, a human-machine operation module 2, a fixed power module 3, an adjustable power module 4, a voltage level selection switch 5, a data acquisition unit 6, an alarm unit 7, a protection unit 8, a storage unit 9 and a heat dissipation unit 10, wherein the control and data processing unit 1 is respectively connected to the human-machine operation module 2, the fixed power module 3, the adjustable power module 4, the voltage level selection switch 5, the data acquisition unit 6, the alarm unit 7, the protection unit 8 and the heat dissipation unit 10, and the human-machine operation module 2 is also respectively connected to the fixed power module 3 and the storage unit 9.

[0021] The control and data processing unit 1 collects the voltage and current parameters of each branch collected by the data acquisition unit 6, and compares them with the set values ​​to determine whether an alarm or protection measures are needed, thereby sending signals to the alarm unit 7 and the protection unit 8 to execute relevant alarm and protection logic. The unit outputs analog signals to control the output voltage of the adjustable power module 4. At the same time, data interaction is carried out through the unit and the human-machine operation module [2].

[0022] The human-machine operation module 2 is used to interact with the display control and data processing unit 1, input control instructions, modify system parameters, and display data sent by the control and data processing unit in real time.

[0023] The fixed power supply module 3 is used to provide power to the control and data processing unit 1, the human-machine operation module 2 and other modules requiring power.

[0024] The adjustable power supply module 4 is used to receive control instructions from the control and data processing unit 1, and output corresponding voltage according to the instructions. The module has two operation modes: manual and automatic, and can display the output voltage in real time.

[0025] The voltage level selection switch 5 is a 6-position selection switch, which is used to switch to relay test circuits of different voltage levels and realize electrical isolation of different test circuits.

[0026] The data acquisition unit 6 is used to collect the voltage and current of the relay coil circuit, collect the current of the relay normally open contact test circuit and the normally closed contact test circuit, and transmit the above signals to the control and data processing unit 1 in real time.

[0027] The alarm unit 7 generates an audible and visual alarm according to the instructions issued by the control and data processing unit 1, such as "the coil direct resistance is not within the specified range", "the coil pull-in voltage does not meet the requirements", "the contact resistance of the contact point is greater than the set value", etc.

[0028] The protection unit 8 protects the coil during the coil voltage loading process according to the instructions issued by the control and data processing unit 1, and cuts off the loading circuit when the voltage is greater than the rated voltage of the coil. At the same time, when the system has a short circuit overcurrent fault, the protection unit can automatically cut off the power supply line circuit.

[0029] The storage unit 9 is used to save the test records. The human-machine operation module 2 can query and view the test records. At the same time, the storage unit is pluggable and can transfer the test data to the PC.

[0030] The heat dissipation unit 10 is used for cooling and dissipating heat.

[0031] In addition to the above main components, the utility model is also equipped with a modular frame unit, which integrates the above modules into an engineering box with a size of about 530mm*370mm*310mm. The engineering box is divided into upper and lower layers, the upper layer is equipped with the human-machine operation module 2, and the lower layer is equipped with all other modules.

[0032] The operation method of the utility model is as follows:

[0033] When the relay performance test is required, the relay is inserted into the corresponding base, and the voltage level selection switch 5 is adjusted to correspond to the test relay. The utility model has two operation modes, a manual mode and an automatic mode.

[0034] Manual operation mode:

[0035] If manual operation is required, the switch must be adjusted to manual mode, and the human-machine operation module 2 switches to the manual mode screen. Then manually adjust the voltage knob of the adjustable power supply module 4 to gradually increase the voltage. After the relay is activated, continue to pressurize to the rated voltage of the relay, and then gradually reduce the voltage. After the relay is released, continue to reduce the voltage to zero. The human-machine operation module 2 will display the relay action voltage, release voltage, coil direct resistance, series normally open contact contact resistance, series normally closed contact contact resistance and other parameters in real time. The system compares the parameters, determines their eligibility and generates test records, which are saved in the storage unit 9.

[0036] If the voltage exceeds the rated voltage of the relay coil during operation, the control and data processing unit [1] will output a protection command, the protection unit will be activated, the relay pressurization circuit will be cut off, and the alarm indicator will light up. At this time, the voltage output knob should be adjusted so that the output voltage of the adjustable power module 4 is less than the rated voltage of the relay. The fault will automatically disappear and the protection unit will be reset.

[0037] Automatic operation mode:

[0038] If automatic operation is required, the dial switch needs to be adjusted to the automatic mode, and the human-machine operation module 2 switches to the automatic mode screen. Then press the start button on the panel, and the adjustable power supply module 4 will complete the step-up and step-down process according to the set rules. The human-machine operation module 2 will display the relay action voltage, release voltage, coil direct resistance, series normally open contact resistance, series normally closed contact resistance and other parameters in real time. The system compares the parameters, judges their eligibility and generates test records, which are saved in the storage unit 9.

[0039] The purpose of the utility model is to improve the efficiency of relay performance testing. Through the utility model, voltage can be automatically loaded on the relay coil, the operating voltage and return voltage can be automatically recorded, various performance parameters of the relay can be automatically calculated, an alarm can be issued for unqualified test parameters, and the test results can be automatically recorded and formed into a report.

[0040] The use of the utility model not only avoids repeated wiring in the previous testing process, reduces labor intensity and error rate, and improves test safety, but also ensures the overhaul schedule of the unit, saving time and labor costs.

[0041] The above is only one implementation of the present utility model. The protection scope of the present utility model is not limited to the above implementation scope. All technical solutions under the concept of the present utility model belong to the protection scope of the present utility model. Some improvements and modifications without departing from the principle of the present utility model should also be regarded as the protection scope of the present utility model.

Claims

1. Plug-in relay performance rapid tester, characterized by: It includes a control and data processing unit, a human-machine operation module, a fixed power supply module, an adjustable power supply module, a voltage level selection switch, a data acquisition unit, an alarm unit, a protection unit, a storage unit and a heat dissipation unit, wherein the control and data processing unit is respectively connected to the human-machine operation module, the fixed power supply module, the adjustable power supply module, the voltage level selection switch, the data acquisition unit, the alarm unit, the protection unit and the heat dissipation unit, and the human-machine operation module is also respectively connected to the fixed power supply module and the storage unit.

2. The plug-in relay performance rapid tester according to claim 1, characterized in that: The control and data processing unit collects the voltage and current parameters of each branch collected by the data collection unit, compares them with the set values, determines whether an alarm or protective measures are needed, and sends signals to the alarm unit and the protection unit to execute relevant alarm and protection logic.

3. The plug-in relay performance rapid tester according to claim 1, characterized in that: The human-machine operation module is used to interact with the display control and data processing unit, input control instructions, modify system parameters, and display data sent by the control and data processing unit in real time.

4. The plug-in relay performance rapid tester according to claim 1, characterized in that: The fixed power supply module is used to provide power to the control and data processing unit, the human-machine operation module and other modules requiring power.

5. The plug-in relay performance rapid tester according to claim 1, characterized in that: The adjustable power supply module is used to receive control instructions from the control and data processing unit, and output corresponding voltage according to the instructions.

6. The plug-in relay performance rapid tester according to claim 1, characterized in that: The voltage level selection switch is a 6-speed selection switch, which is used to switch to relay test circuits of different voltage levels.

7. The plug-in relay performance rapid tester according to claim 1, characterized in that: The data acquisition unit is used to collect the voltage and current of the relay coil loop, and the current of the relay normally open contact test loop and the normally closed contact test loop, and transmit the above signals to the control and data processing unit in real time.

8. The plug-in relay performance rapid tester according to claim 1, characterized in that: The alarm unit generates sound and light alarms according to the instructions issued by the control and data processing unit.

9. The plug-in relay performance rapid tester according to claim 1, characterized in that: The protection unit protects the coil during the coil voltage loading process according to the instructions issued by the control and data processing unit, and cuts off the loading circuit when the voltage is greater than the rated voltage of the coil.

10. The plug-in relay performance rapid tester according to claim 1, characterized in that: The storage unit is used to store the test records, the human-machine operation module can query and view the test records, and the heat dissipation unit is used to cool and dissipate heat.

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