A mechanical characteristics test box for electric isolating switches

Abstract

The present invention discloses a mechanical characteristic test box for an electric isolating switch, comprising a self-contained power supply, a time measurement module, a temperature and humidity control unit, an electrical measurement module, an electric isolating switch mechanism and an electric isolating switch body, wherein the self-contained power supply is respectively connected to the time measurement module, the temperature and humidity control unit and the electrical measurement module, the electrical measurement module is also connected to the electric isolating switch mechanism, and the time measurement module is also connected to the electric isolating switch body. The beneficial effects of the present invention are as follows: First, during the detection after the installation and maintenance of the electric isolating switch, the opening and closing synchronization of the electric isolating switch can be accurately detected, thereby preventing the electric isolating switch from being tender and burned due to poor opening and closing synchronization during the opening and closing process.

Description

Technical Field

[0001] The invention relates to the technical field of switches, in particular to a mechanical characteristic test box for an electric isolating switch. Background Art

[0002] At present, after the installation and maintenance of electric disconnectors in power systems, the main measurement is the opening and closing synchronization of electric disconnectors, which cannot fully meet the quality supervision requirements after the installation and maintenance of electric disconnectors. The opening and closing synchronization detection of open electric disconnectors still remains in the visual inspection mode, mainly relying on years of installation and maintenance experience to judge. In particular, the combined electrical disconnectors are fully sealed, and it is impossible to visually detect the opening and closing synchronization of the disconnectors during opening and closing. It cannot ensure that the synchronization of the electric disconnectors meets the installation requirements of power equipment, and the opening and closing status of the disconnectors can only be judged by the opening and closing indicators of the disconnectors. There is no means to detect the electrical performance of the energy storage motor and the opening and closing contactor of the electric disconnector. There is an urgent need for an instrument that can detect the opening and closing synchronization of the electric disconnector and the current change trend of the electrical action process of the opening and closing contactor to meet the quality inspection requirements after the installation and maintenance of the electric disconnector and ensure the installation and maintenance quality of the electric disconnector. Summary of the invention

[0003] The object of the present invention is to provide a mechanical characteristic test box for an electric isolating switch to solve the problems mentioned in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A test box for the mechanical characteristics of an electric isolating switch comprises a self-contained power supply, a time measurement module, a temperature and humidity control unit, an electrical measurement module, an electric isolating switch mechanism and an electric isolating switch body, wherein the self-contained power supply is respectively connected to the time measurement module, the temperature and humidity control unit and the electrical measurement module, the electrical measurement module is also connected to the electric isolating switch mechanism, the time measurement module is also connected to the electric isolating switch body, the electrical measurement module and the time measurement module measure the current and voltage of the electric isolating switch operating mechanism in real time, and measure the maximum current of the electric isolating switch operating mechanism at the same time, the time measurement module measures the current and voltage of the electric isolating switch body in real time, and during the opening and closing action of the electric isolating switch, the time measurement module adopts a double trigger mode plus a potential method to measure the opening and closing synchronization of the electric switch.

[0006] As a further solution of the present invention: the self-contained power supply includes a 24V lithium battery, an inverter board, a rectifier board and a time delay relay.

[0007] As a further solution of the present invention: the electrical measurement module includes a voltage measurement unit and a current measurement unit.

[0008] As a further solution of the present invention: the time measurement module includes a time test unit, a synchronous relay, an induction trigger module and an active trigger module.

[0009] As a further solution of the present invention: the current measurement unit is a multi-channel current detection circuit.

[0010] As a further solution of the present invention: the electric isolating switch operating mechanism includes an energy storage motor and an opening and closing contactor.

[0011] As a further solution of the present invention: the dual trigger mode is an active trigger mode and an induction trigger mode.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. After the installation and maintenance of the electric disconnector, the detection can accurately detect the opening and closing synchronization of the electric disconnector, and prevent the electric disconnector from being touched and burned due to poor opening and closing synchronization during the opening and closing process. 2. Real-time detection of the change trend curve of the energy storage motor and the opening and closing current during the operation of the electric disconnector, timely judgment of the insulation performance of the energy storage motor and the opening and closing contactor of the electric disconnector operating mechanism, timely replacement of the energy storage motor and the opening and closing contactor with cracked insulation performance, and ensure the reliable operation of the electric disconnector. 3. Quick wiring, simple operation, short test time, high accuracy, using the induction trigger mode and active trigger mode dual mode, to meet the needs of various models of electric disconnectors from different manufacturers. 4. High test efficiency, using this instrument only requires 2 people to complete the test, the traditional test method requires 4 people to complete, and can only perform the opening and closing synchronization detection of the electric disconnector, using this instrument saves time and effort, and has high work efficiency. 5. The instrument is light in weight, small in size, easy to carry, does not require an external power supply, and can be quickly and flexibly transferred to the work location. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a principle block diagram of the present invention.

[0014] Figure 2 This is a multi-channel current detection circuit diagram.

[0015] Figure 3 This is the circuit diagram of dual trigger mode and potential method. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1 Embodiment 1: In the embodiment of the present invention, a mechanical characteristics test box for an electric isolating switch includes a self-contained power supply, a time measurement module, a temperature and humidity control unit, an electrical measurement module, an electric isolating switch mechanism and an electric isolating switch body, wherein the self-contained power supply is respectively connected to the time measurement module, the temperature and humidity control unit and the electrical measurement module, the electrical measurement module is also connected to the electric isolating switch mechanism, and the time measurement module is also connected to the electric isolating switch body.

[0018] The self-contained power supply is composed of a 24V lithium battery, an inverter board, a rectifier board and a delay relay, which can provide the instrument with 220V AC power and 220V DC power, and provide independent power for gas measurement, time measurement, temperature and humidity control unit and test output. During the opening action of the electric disconnector, the electrical measurement measures the current and voltage of the energy storage motor and the opening and closing contactor of the operating mechanism of the electric disconnector in real time through multiple channels, and at the same time measures the maximum current of the energy storage motor and the opening and closing contactor of the operating mechanism during the opening and closing process of the electric disconnector.

[0019] Time measurement During the opening and closing action of the electric disconnector, the double trigger mode + potential method is used to measure the opening and closing synchronization of the electric disconnector. The double trigger mode is the active trigger mode and the inductive trigger mode. In the active trigger mode, the instrument inputs the control signal through the operating mechanism control circuit to ensure the opening and closing action of the electric disconnector, triggers the time measurement unit to start timing, uses the potential method to detect the end time of the opening and closing action of the electric disconnector during the action, and measures the opening and closing synchronization of the electric disconnector through the time difference of the three-phase opening and closing action of the electric disconnector. In the inductive trigger mode, the inductive trigger time measurement unit starts timing when the electric disconnector opens and closes, uses the potential method to detect the end time of the opening and closing action of the electric disconnector during the action, and measures the opening and closing synchronization of the electric disconnector through the time difference of the three-phase opening and closing action of the electric disconnector. The instrument can test the opening and closing action time and synchronization of the electric disconnector, the electric operating mechanism energy storage motor, the opening and closing contactor coil action current and maximum current and other indicators.

[0020] Embodiment 2: Based on Embodiment 1, the temperature and humidity control unit is implemented by combining a temperature sensor, a humidity sensor, a humidifier, and an air conditioner, which can ensure that the temperature and humidity of the working environment are suitable.

[0021] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0022] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An electric isolating switch mechanical characteristics test box, comprising a self-contained power supply, a time measurement module, a temperature and humidity control unit, an electrical measurement module, an electric isolating switch mechanism and an electric isolating switch body, characterized in that: The self-contained power supply is respectively connected to the time measurement module, the temperature and humidity control unit and the electrical measurement module. The electrical measurement module is also connected to the electric isolating switch mechanism. The time measurement module is also connected to the electric isolating switch body. The electrical measurement module measures the current and voltage of the electric isolating switch operating mechanism in real time, and measures the maximum current of the electric isolating switch operating mechanism at the same time. The time measurement module measures the current and voltage of the electric isolating switch body in real time. During the opening and closing action of the electric isolating switch, the time measurement module adopts a double trigger mode plus a potential method to measure the opening and closing synchronization of the electric switch.

2. The mechanical characteristic test box of an electric isolating switch according to claim 1 is characterized in that: The self-contained power supply includes a 24V lithium battery, an inverter board, a rectifier board and a time delay relay.

3. The mechanical characteristic test box of an electric isolating switch according to claim 1 is characterized in that: The electrical measurement module includes a voltage measurement unit and a current measurement unit.

4. The electric isolating switch mechanical characteristics test box according to claim 1, characterized in that: The time measurement module includes a time test unit, a synchronous relay, an induction trigger module and an active trigger module.

5. The mechanical characteristic test box of an electric isolating switch according to claim 3 is characterized in that: The current measuring unit is a multi-channel current detection circuit.

6. The electric isolating switch mechanical characteristics test box according to claim 1, characterized in that: The electric isolating switch operating mechanism comprises an energy storage motor and an opening and closing contactor.

7. The electric isolating switch mechanical characteristics test box according to claim 6, characterized in that: The dual trigger mode includes an active trigger mode and an inductive trigger mode.

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