CN106918406A - Wire interconnecting piece position temperaturing lifting abnormality alarming device - Google Patents

Abstract

A kind of wire interconnecting piece position temperaturing lifting abnormality alarming device; including the fixture matched with wire metals sleeve pipe size; the fixture is made using Heat Conduction Material; the inner surface of the fixture is in close contact with the metal part of wire metals sleeve pipe; temperature is provided with outer surface and becomes dope layer, the temperature becomes dope layer outside and also sets up the transparent protective paint layer of at least one of which.Low cost of the present invention, can widespread adoption, by track walker, naked eyes or telescope are observable high-voltage conducting wires metal sleeve temperature rise situation under tower, for line security operation provides technological means, reduction power grid enterprises operating cost.

Description

Abnormal temperature rise warning device for wire connection parts

technical field

The invention relates to a warning device for abnormal temperature rise at the connection part of a wire, in particular to a real-time warning device for the temperature rise of a high-voltage wire metal casing through a reversible discoloration device, which can change color twice for different temperature rise ranges, and can be used according to the color change Determine the fault level of the bushing operation, and provide the implementation basis for the high-voltage wire metal bushing fault temperature rise warning device for the inspection and maintenance of the high-voltage line.

Background technique

In high-voltage transmission lines, the connecting parts of the wires are crimped with metal sleeves, and the crimped metal sleeves are damaged due to their own quality or force, resulting in local temperature rise. According to the requirements of the State Grid Corporation of China's high-voltage transmission line operation management regulations, the relative temperature rise of the connection fittings is greater than 20 °C, which is a serious defect. Therefore, it is necessary to carry out real-time temperature measurement of the high-voltage wire metal casing. At present, there are three main ways to measure the temperature of the metal casing of high-voltage wires: 1. Helicopter aerial infrared scanning; 2. Installing an online temperature monitoring device; 3. Manual hand-held infrared scanning. The disadvantages of these three methods are: first, the cost is high; second, there are few monitoring points; third, it is mainly carried out at night, so it is proposed to invent a low-cost, large-scale application. During regular inspections, personnel can observe the high voltage with the naked eye or a telescope under the tower. The practical device for the temperature rise of the wire metal casing provides technical means for the safe operation of the line and reduces the operating cost of the power grid enterprise.

Contents of the invention

The technical problem to be solved by the present invention is to provide a high-voltage wire metal bushing fault temperature rise warning device with simple structure, convenient observation, stable reliability, low cost, and reduced operating costs of power grid enterprises.

In order to solve the above technical problems, the present invention is realized in the following manner: a warning device for abnormal temperature rise at the connection part of the wire, including a clamp matching the size of the metal sleeve of the high-voltage wire, the clamp is made of heat-conducting material, and the clamp The inner surface of the inner surface is in close contact with the metal part of the metal casing of the high-voltage wire, and a temperature-changing paint layer is arranged on the outer surface. Through the color change of the temperature-changing paint layer at different temperatures, the line inspectors can observe the temperature rise of the metal casing of the high-voltage wire with the naked eye or a telescope under the tower. This low-cost method ensures the safety of the line, and the fixture is installed on the The high-voltage wire metal casing is convenient and fast, and the maintenance cost is low.

Further, at least one transparent protective paint layer is provided outside the temperature-changing paint layer.

Preferably, the protective paint layer is a colorless hardened metallic paint layer.

Preferably, the temperature-changing paint layer includes a surface temperature-changing paint layer and an inner temperature-changing paint layer with different initial colors, the inner temperature-changing paint layer is arranged on the outer surface of the fixture, and the surface temperature-changing paint layer is arranged On the outer surface of the inner temperature-changing paint layer, the surface temperature-changing paint layer turns transparent when the temperature reaches 50°C, and the inner temperature-changing paint layer turns transparent when the temperature reaches 70°C. In this way, the temperature range can be directly known through the color distinction, which greatly saves the time of line patrol personnel and improves work efficiency.

Preferably, the surface temperature-change paint layer changes from black to colorless when the temperature reaches 50°C, and the inner temperature-change paint layer changes from red to colorless when the temperature reaches 70°C.

Preferably, the clamp is composed of an upper part and a lower part. One end of the upper part and the lower part is hinged, and the other end is fixed by a fastening bolt. tube to match the clamping space.

Preferably, the clamp is a metal clamp.

Preferably, the outer surface of the clamp is white.

In summary, the invention is low in cost and can be applied in a wide range. The temperature rise of the metal casing of the high-voltage wire can be observed by the inspectors under the tower with the naked eye or a telescope, which provides technical means for the safe operation of the line and reduces the operating cost of the power grid enterprise.

Description of drawings

Fig. 1 is a schematic structural view of the present invention.

In the figure, 1. metal fixture, 2. temperature-changing paint layer on the surface layer, 3. temperature-changing paint layer on the inner layer, 4. colorless hardened metal paint layer.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, a warning device for abnormal temperature rise at the connecting part of the wire, including a metal clamp 1, a surface temperature-changing paint layer 2, an inner layer temperature-changing paint layer 3, and a colorless hardened metal paint layer 4; The paint layer 2 and the inner temperature-changing paint layer 3 are reversible paint layers. The metal clamp 1 is fastened on the high-voltage wire bushing through fastening bolts. Dimensions and specifications, one end can be turned over and the other end is fastened with bolts; the reversible paint layer is attached to the outer surface of the metal fixture through secondary brushing, painting, and drying; the reversible paint layer is divided into surface temperature-changing paint layer 2 and the inner temperature-changing paint layer 3, the surface temperature-changing paint layer 2 turns from black to colorless when the temperature reaches 50°C, and the inner temperature-changing paint layer 3 turns from red to colorless when the temperature reaches 70°C color, the reversible paint layer is sprayed with a colorless hardened metallic paint layer 4 for protection after brushing and drying.

Working process of the present invention is:

Fasten the metal fixture 1 to the metal casing of the high-voltage wire with bolts. After the metal fixture 1 is installed, it will appear black as a whole. When the temperature reaches 50 degrees, the temperature-changing coating layer 2 on the surface will turn from black to colorless, and the metal fixture 1 will appear red as a whole. (i.e. the true color of the inner temperature-changing paint layer 3), when the temperature reaches 70 degrees, the red color of the inner temperature-changing paint layer 3 becomes colorless, and the overall metal fixture 1 appears white (i.e. the true color of the metal fixture), and the patrol personnel are under the tower The temperature rise of the metal casing of the high-voltage wire can be observed with the naked eye or a telescope, and the operation status of the high-voltage wire casing can be judged by the color, which provides a reference for the maintenance of the transmission line.

Claims (8)

1. A warning device for abnormal temperature rise at the connecting part of the wire, characterized in that it includes a clamp that matches the size of the metal sleeve of the high-voltage wire, the clamp is made of a heat-conducting material, and the inner surface of the clamp is in contact with the metal sleeve of the high-voltage wire. The metal parts are in close contact, and a temperature-changing paint layer is provided on the outer surface. 2. The warning device for abnormal temperature rise at the wire connection site according to claim 1, characterized in that at least one transparent protective paint layer is arranged outside the temperature-changing paint layer. 3 . The warning device for abnormal temperature rise at the wire connection site according to claim 2 , wherein the protective paint layer is a colorless hardened metal paint layer. 4 . 4. The abnormal temperature rise warning device for wire connection parts according to claim 2, wherein the temperature-changing paint layer comprises a surface temperature-changing paint layer and an inner temperature-changing paint layer with different initial colors, and the inner layer The temperature-changing paint layer is arranged on the outer surface of the fixture, the surface temperature-changing paint layer is arranged on the outer surface of the inner temperature-changing paint layer, and the surface temperature-changing paint layer becomes transparent when the temperature reaches 50°C. The inner temperature-changing paint layer turns transparent when the temperature reaches 70°C. 5. The warning device for abnormal temperature rise at the connecting part of the wire according to claim 4, wherein the temperature-changing paint layer on the surface changes from black to colorless when the temperature reaches 50°C, and the temperature-changing paint layer on the inner layer changes from black to colorless when the temperature reaches 50°C. It turns from red to colorless when the temperature reaches 70°C. 6. The abnormal temperature rise warning device for wire connection parts according to any one of claims 1 to 5, characterized in that the clamp is composed of an upper part and a lower part, one end of the upper part and the lower part is hinged, and the other end is Fixing by fastening bolts, after the upper part and the lower part are connected, the middle part is provided with a clamping space matching the metal sleeve of the high-voltage wire. 7 . The warning device for abnormal temperature rise at the wire connection site according to claim 6 , wherein the clamp is a metal clamp. 7 . 8 . The warning device for abnormal temperature rise at the connecting part of the wire according to claim 7 , wherein the outer surface of the clamp is white. 9 .