CN104390581A - Aerial wire outer diameter live measurement tool - Google Patents

Abstract

The invention relates to a tool for measuring the outer diameter of an overhead wire, which relates to a device for measuring the outer diameter of an overhead wire, in particular to a tool for measuring the outer diameter of an overhead wire under electrified conditions. It includes an insulating rod, a measuring module and a control center. The measuring module is installed at the end of the insulating rod; the measuring module includes an electronic ruler, a micro motor and a wireless module, etc. The electronic ruler is equipped with an electronic ruler displacement sensor, and the output terminal of the micro motor is connected to the electronic ruler. The displacement sensor is connected, and the electronic scale displacement sensor is driven by the micro motor to move; the wireless module is connected with the micro motor and the electronic scale displacement sensor respectively; The input end of the single-chip controller is connected with the output end; the wireless module is connected and communicated with the control output end of the single-chip controller through wireless.

Description

A Live Measuring Tool for the Outer Diameter of Aerial Conductors

technical field

The invention relates to a tool for measuring the outer diameter of an overhead wire, which relates to a device for measuring the outer diameter of an overhead wire, in particular to a tool for measuring the outer diameter of an overhead wire under electrified conditions.

Background technique

In many power transmission and transformation technical transformation projects and some new (reconstruction and expansion) projects, it is necessary to design and evaluate the original busbars, lead wires and transmission lines to determine whether they meet the new capacity requirements. However, due to various reasons, designers often cannot consult the detailed parameters of some old substation busbars and transmission lines. The depth and accuracy of the design is not enough, resulting in reciprocating changes in engineering construction, as well as various remaining problems after commissioning.

Contents of the invention

The purpose of the present invention is to provide a live wire measurement tool for the outer diameter of overhead wires to help engineers and technicians accurately grasp the parameters of old wires; to work through the remote control measurement module of the control center, receive and display measurement data; ensure The personal safety of the measuring personnel; avoiding the impact of the measuring work on the line itself and the power grid.

A live measuring tool for the outer diameter of an overhead wire is realized by adopting the following technical scheme: the live measuring tool for the outer diameter of an overhead wire includes an insulating rod, a measuring module and a control center, and the measuring module is installed at the end of the insulating rod;

The measurement module includes an electronic ruler, a micro motor and a wireless module, etc. The electronic ruler is equipped with an electronic ruler displacement sensor, and the output end of the micro motor is connected with the electronic ruler displacement sensor. The micro motor and the electronic scale displacement sensor are connected;

The control center has a single-chip controller, an input device and an output device, and the input device and the output device are respectively connected with the input and output ends of the single-chip controller; the single-chip controller adopts a single-chip microcomputer, and the input device includes a keyboard and buttons, etc. The device includes a display screen; the wireless module is connected and communicated with the control output end of the single-chip controller through wireless means. the

A display driver module is arranged at the output port of the single-chip microcomputer controller.

The display screen adopts LCD display screen.

Considering the diameter of conventional overhead wires, the displacement of the electronic ruler is 10-50mm, and the measurement accuracy of the electronic ruler displacement sensor is 0.1mm.

The insulating rod is made of a multi-section set of rods. The total length of the insulating rod is not less than 8 meters to meet the requirements of the 110kV voltage level. The length of the head of the uppermost part is 0.5 meters. The length is 1.5 meters; one end of each sleeve rod is provided with an internal thread, and the other end is provided with an external thread. The internal thread is matched with the external thread installed on the upper adjacent sleeve rod. The internal thread provided on the adjacent sleeve rod at its lower part matches. The insulating rod plays the role of insulation, and prevents personnel from getting an electric shock during live measurement.

The electronic ruler adopts LWH-0100 linear displacement sensor, which has excellent linearity, up to ±0.04%, resolution higher than 0.01mm, can run at high speed, and has a service life of up to 100×106

Second-rate.

Working principle: When using the overhead wire outer diameter live measuring tool to measure, align one end of the electronic ruler with the overhead wire, and the other end is tested by moving the displacement sensor. When the displacement sensor is close to the wire, the test is completed. The resistance value is 0-3KΩ within range. For example, if the displacement is 50mm, the resistance value is about 1.5KΩ; if the displacement is 10mm, the resistance value is about 300Ω.

Advantages of the invention: the invention can realize the accurate live measurement of the outer diameter of the overhead wire, and directly display it on the display screen in digital form; the staff can carry out the remote measurement work through the control center, avoiding the risk of complicated operations when the live wire is charged.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing:

Fig. 1 is a structural schematic diagram of a live measuring tool for the outer diameter of an overhead conductor according to the present invention.

In the figure: 1. insulating rod, 2. electronic ruler, 3. electronic ruler displacement sensor, 4. micro motor, 5. wireless module, 6. control center, 7. wire.

Detailed ways

With reference to accompanying drawing 1, the overhead wire external diameter live measuring tool of the present invention comprises insulating rod 1, measuring module and control center 6, and measuring module is installed on insulating rod 1 end;

The measurement module includes an electronic ruler 2, a micro motor 4 and a wireless module 5, etc. The electronic ruler 2 is provided with an electronic ruler displacement sensor 3, and the output end of the micro motor 4 is connected with the electronic ruler displacement sensor 3, and the electronic ruler is driven by the micro motor 4 to displace The sensor 3 moves; the wireless module 5 is connected to the micro motor 4 and the electronic scale displacement sensor 3 respectively;

The control center has a single-chip controller, an input device and an output device, and the input device and the output device are respectively connected with the input and output ends of the single-chip controller; the single-chip controller adopts a single-chip microcomputer, and the input device includes a keyboard and buttons, etc. The equipment includes a display screen; the wireless module 5 is connected and communicated with the control output end of the single-chip controller through wireless means. the

A display driver module is arranged at the output port of the single-chip microcomputer controller.

The display screen adopts LCD display screen.

Considering the diameter of conventional overhead wires, the displacement of the electronic ruler 2 is 10-50 mm, and the measurement accuracy of the electronic ruler displacement sensor 3 is 0.1 mm.

The insulating rod 1 is a set of multi-section rods. The total length of the insulating rod 1 is not less than 8 meters to meet the requirements of the 110kV voltage level. The length of the rod head set on the uppermost part is 0.5 meters. The length of the rod is 1.5 meters; one end of each sleeve rod is provided with an internal thread, and the other end is provided with an external thread. The internal thread is matched with the external thread installed on the upper adjacent sleeve rod. The external thread It matches the internal thread installed on the adjacent sleeve rod at its lower part.

Electronic ruler 2 adopts LWH-0100 linear displacement sensor, which has excellent linearity, up to ±0.04%, resolution higher than 0.01mm, can run at high speed, and has a service life of up to 100×10 ⁶

Second-rate.

The electronic ruler displacement sensor 3 is a main component for measuring displacement, and converts the displacement variation of the electronic ruler displacement sensor 3 into a variation of resistance. The current source supplies power to the electronic scale displacement sensor 3, and the change of the resistance of the electronic scale displacement sensor 3 is used to generate a voltage change. The voltage acquisition board of the wireless module 5 collects the real-time voltage, converts it into a digital signal and sends it to the control center 6 in a wireless manner.

Specific examples:

The control center can use a handheld terminal or a computer terminal.

The electronic scale displacement sensor 3 sends the measurement data to the handheld terminal through the wireless module 5 in real time; the handheld terminal receives and displays the measurement data through the wireless module 5, and controls the operation of the micro motor 4 through the input device, thereby controlling the movement of the electronic scale displacement sensor 3.

When an overhead wire outer diameter live measuring tool is used, after the insulating rod 1 is installed, the insulating rod 1 is placed close to the overhead wire 7 to be measured, and the micro motor 4 drives the telescopic rod of the electronic ruler displacement sensor 3 to move through the gear set . The handheld terminal receives the voltage value of the wireless module 5, calculates it with a single-chip microcomputer, converts it into a displacement change, and displays it on a liquid crystal display. The hand-held terminal sends the control signal of the micro motor 4 to the wireless module 5 in a wireless manner, and the motor control unit of the wireless module 5 performs "forward", "backward" and "stop" on the micro motor 4, and monitors the current of the micro motor 4 to control the micro motor 4. The motor 4 is automatically protected.

Claims (6)

1. A live measuring tool for the outer diameter of an overhead conductor, characterized in that: it comprises an insulating rod, a measuring module and a control center, and the measuring module is installed at the end of the insulating rod; The measurement module includes an electronic ruler, a micro motor and a wireless module, etc. The electronic ruler is equipped with an electronic ruler displacement sensor, and the output end of the micro motor is connected with the electronic ruler displacement sensor. The micro motor and the electronic scale displacement sensor are connected; The control center has a single-chip controller, an input device and an output device, and the input device and the output device are respectively connected with the input and output ends of the single-chip controller; the single-chip controller adopts a single-chip microcomputer, and the input device includes a keyboard and buttons, etc. The device includes a display screen; the wireless module is connected and communicated with the control output end of the single-chip controller through wireless means. 2. The live measuring tool for the outer diameter of overhead wires according to claim 1, characterized in that: a display driver module is provided at the output port of the single-chip controller. 3. The live measuring tool for the outer diameter of overhead wires according to claim 1, characterized in that: the display screen adopts an LCD display screen. 4. The tool for measuring live wire outer diameter live according to claim 1, characterized in that: the displacement of the electronic ruler is 10-50 mm, and the measurement accuracy of the electronic ruler displacement sensor is 0.1 mm. 5. The live measuring tool for the outer diameter of overhead wires according to claim 1, characterized in that: the insulating rod is a set of multi-section rods, the total length of the insulating rod is not less than 8 meters, and it is used in accordance with the voltage level of 110kV Requirements, the length of the rod head set on the uppermost part is 0.5 meters, and the length of each sleeve rod in the rest is 1.5 meters; one end of each sleeve rod is provided with an internal thread, and the other end is provided with an external thread. The external threads arranged on the adjacent sleeve rods at the upper part match, and the external threads are matched with the internal threads installed on the adjacent sleeve rods at the lower part. 6. The live measuring tool for the outer diameter of overhead wires according to claim 1, wherein the electronic ruler adopts a LWH-0100 type linear displacement sensor.