CN107633928B - Flexible die for removing dirt on surface of coating of post insulator - Google Patents

Abstract

The invention relates to a flexible mold for removing contamination on the coating surface of a post insulator, wherein the coating surface of the post insulator is covered with a decontamination material, the decontamination material is covered with a heating sheet, and a side of the post insulator is provided There is a flexible support, the flexible support includes a plurality of vertical rods parallel to the rod part of the post insulator and a plurality of transverse rods vertically connected with the vertical rods, wherein the transverse rods are directed toward the vertical rods. The sheds of the strut insulators extend between the sheds, and the part between the sheds on the transverse rod is covered with elastic polymer.

Description

Cleaning of flexible molds from soiled surfaces of post insulator coatings

technical field

The invention relates to the technical field of molds, in particular to a flexible mold for removing contamination on the surface of a pillar insulator coating.

Background technique

With the development of my country's economy, the electricity consumption in various places is also increasing. Therefore, higher voltage level transmission is urgently needed to meet the growing demand for electricity. High-voltage and large-capacity transmission puts forward higher requirements for lines. Long strings of insulators are also increasingly used in wiring. Due to long-term exposure to the air, long-string insulators are prone to deposit dirt on their surfaces. The dirt contains electrolytic substances. Under humid weather conditions such as fog, dew, and rain, the electrical strength of the insulator is greatly reduced, which may cause external damage to the power mechanism. Insulation flashover occurs under the action of overvoltage, resulting in a power outage accident, thus causing harm to the normal operation of the power mechanism.

In order to improve the anti-pollution flashover capability of power transmission and transformation equipment, the power sector generally adopts the measures of spraying RTV anti-pollution flashover paint on the surface of porcelain or glass insulators. After long-term operation of the RTV coating, the surface area is seriously contaminated, and the contamination is closely combined with the coating, so it is difficult to remove the contamination layer by a simple cleaning method. For example, the existing cleaning of insulators mainly relies on manual labor. Due to the large size and heavy weight of long strings of insulators, manual cleaning is not only inefficient, time-consuming and labor-intensive, cleaning cleanliness is poor, and reliability is not high, but also there are potential safety hazards, which pose a threat to personnel. Security is bad. In response to the above problems, our company submitted an invention patent application (CN106566062A) to the Patent Office on 2016.10.18, which disclosed a material and a manufacturing method for removing the contamination on the surface of a room temperature vulcanized RTV coating. Although this method can effectively remove The surface of the RTV coating is dirty, but in practical application, it is also necessary to use the matching mold suitable for the decontamination of the RTV pillar insulator on the substation site.

SUMMARY OF THE INVENTION

Therefore, the technical problem to be solved by the present invention is to overcome the problem that there is no matching mold in the prior art method for removing contamination of pillar insulators, thereby providing a flexible mold that can be applied on a large scale for removing contamination on the coating surface of pillar insulators.

In order to solve the above-mentioned technical problems, the present invention provides a flexible mold for removing contamination on the surface of the pillar insulator coating, wherein the coating surface of the pillar insulator is covered with a decontamination material, and the decontamination material is covered with a heating sheet, A flexible bracket is provided next to the pillar insulator, and the flexible bracket includes a plurality of vertical rods parallel to the rod portion of the pillar insulator and a plurality of transverse rods vertically connected with the vertical rods, wherein The transverse rod extends between the sheds of the strut insulator, and the part between the sheds on the transverse rod is covered with elastic polymer.

In an embodiment of the present invention, a hollow slot is provided at a position where the vertical rod is connected to the transverse rod.

In an embodiment of the present invention, the transverse rod is a semi-circular ring, and the outer diameter of the semi-circular ring is smaller than the outer diameter of the smallest shed, and the inner diameter of the semi-circular ring is larger than the inner diameter of the largest shed.

In one embodiment of the present invention, the inner diameter of the transverse rod covered with the elastic polymer is smaller than the inner diameter of the transverse rod without the elastic polymer coating, and the outer diameter of the transverse rod covered with the elastic polymer is larger than that of the uncoated elastic polymer The outer diameter of the transverse member.

In an embodiment of the present invention, the thickness of the transverse rod covered with the elastic polymer is greater than the thickness of the coating of the decontamination material and the heating sheet.

In an embodiment of the present invention, the transverse rod is fixed on the vertical rod through a dovetail nut.

In an embodiment of the present invention, the heating plate is composed of two completely symmetrical semi-circular ring dies.

In one embodiment of the present invention, the half-circle die includes a plug and a connector connected to the plug.

In an embodiment of the present invention, the outer diameter and inner diameter of the heating piece are selected according to the size required for the maximum shed covering of the pillar insulator.

In an embodiment of the present invention, the decontamination material is a polymer decontamination material.

The above-mentioned technical scheme of the present invention has the following advantages compared with the prior art:

The flexible mold for removing contamination on the surface of the pillar insulator coating provided by the present invention not only provides the polymer decontamination material with the required temperature for the transformation from solid to molten state, but also adapts to the pillar insulator structure and its size during the manufacturing process. Deviation problem, heating flexible mold material and low production cost, not easy to damage, convenient for on-site construction and large-scale application.

Description of drawings

In order to make the content of the present invention easier to understand clearly, the present invention will be described in further detail below according to specific embodiments of the present invention and in conjunction with the accompanying drawings, wherein

1 is a schematic diagram of a flexible mold for removing contamination on the surface of a pillar insulator coating according to the present invention;

Fig. 2 is the enlarged schematic diagram of the insulator in Fig. 1 of the present invention;

Fig. 3 is a half-side top view of the flexible mold of the present invention;

FIG. 4 is a schematic diagram of a semi-circular ring die of the heating chip according to the present invention.

Detailed ways

As shown in FIG. 1 , FIG. 2 and FIG. 3 , the present embodiment provides a flexible mold for removing contamination on the surface of the pillar insulator coating, wherein the coating surface of the pillar insulator 10 is covered with a decontamination material 12 . The dirty material 12 is covered with a heating sheet 13, and a flexible bracket is arranged beside the post insulator 10. The vertical rods 21 are vertically connected to a plurality of transverse rods 22, wherein the transverse rods 22 extend between the sheds of the pillar insulator 10, and the transverse rods 22 are located between the sheds The part is covered with elastic polymer 23.

According to the flexible mold for removing contamination on the coating surface of the pillar insulator in this embodiment, the coating surface of the pillar insulator 10 is covered with a decontamination material 12 , and the contamination on the pillar insulator 10 can be absorbed by the decontamination material 12 . , the decontamination material 12 is covered with a heating sheet 13, through the heating of the heating sheet 13, the temperature required for the decontamination material 12 to be transformed from a solid state to a molten state, thereby realizing the adsorption of dirt on the decontamination On the material 12, a flexible bracket is arranged beside the post insulator 10, and the flexible bracket includes a plurality of vertical rods 21 parallel to the rod portion 11 of the post insulator and vertically connected to the vertical rods 21 The plurality of transverse rods 22 are supported and positioned by the vertical rods 21, wherein the transverse rods 22 extend between the sheds of the pillar insulator 10, and the transverse rods 22 are The position between the umbrella skirts on the rod member 22 is covered with elastic polymer 23. Since the elastic polymer can be deformed after being stressed, it can adapt to the difference of the umbrella diameter of the pillar insulator, and the elastic polymer 23 is made of In order to support the decontamination material 12 and the heating sheet 13, elastic pressure is generated on the heating sheet 13, so that the heating sheet 13, the decontamination material 12 and the surface of the pillar insulator 10 are closely attached, which is conducive to the decontamination operation. Thus, the cleanliness of the coating surface of the pillar insulator is ensured.

As shown in FIG. 4 , the heating plate 13 is composed of two completely symmetrical semi-circular ring molds 131 . By buckling the two semi-circular ring molds 131 together, a complete covering of a section of the column insulator 10 is formed. , wherein the heating sheet 13 is manufactured according to the structure of the pillar insulator 10 , and its outer diameter and inner diameter are selected according to the size required for the maximum shed covering of the pillar insulator 10 . The half-circle die 131 includes a plug and a connector connected to the plug.

Hollow slots are provided at the positions of the vertical rods 21 connected to the transverse rods 22 , so that the spacing of the transverse rods 22 can be adjusted to adapt to different umbrella spacings of the pillar insulators 10 . The transverse rod 22 is a semi-circular ring, and the outer diameter of the semi-circular ring is smaller than the outer diameter of the smallest shed, and the inner diameter of the semi-circular ring is larger than the inner diameter of the largest shed. The inner diameter of the transverse rod 22 coated with elastic polymer 23 is smaller than the inner diameter of the transverse rod 22 without elastic polymer coating, and the outer diameter of the transverse rod 22 coated with elastic polymer 23 is larger than that of the transverse rod without elastic polymer coating 22, since the elastic polymer 23 can be deformed after being stressed, it can adapt to the difference of the umbrella diameter of the pillar insulator 10. The thickness of the transverse rod 22 covering the elastic polymer 23 is greater than the thickness of covering the decontamination material 12 and the heating sheet 13, so as to generate elastic pressure on the heating sheet 13, so that the heating sheet 13, decontamination The material 12 is in close contact with the surface of the post insulator 10 .

In this embodiment, the transverse rod 22 is fixed on the vertical rod 21 through a dovetail nut 24 . The decontamination material 12 is a polymer decontamination material; the heating sheet 13 is a silica gel heating sheet, the highest temperature resistance of the silica gel heating sheet can reach 250 ° C, and its power can be designed, and the polymer material can be quickly converted from solid state to The temperature required for the molten state; the elastic polymer 23 has a maximum temperature resistance of up to 250° C. and has flame retardant properties.

The working process of the present invention is as follows: after the polymer decontamination material is placed on the surface of the RTV pillar insulator, two silica gel heating semi-circular molds 131 are buckled on the pillar insulator 10, and then two symmetrical flexible brackets are placed on the pillar insulator 10. Under the action of a certain thrust, it is placed between the insulator sheds, and the silicone heating semi-circular mold 131 and the polymer decontamination material are closely attached to the surface of the RTV pillar insulator under the pressure of the elastic polymer 23, and then the silicone heating sheet 13 Turn on the electricity to heat the polymer material, keep it for a period of time to make the polymer material change from a solid state to a molten state, then disconnect the power supply and stop heating, and finally remove the flexible bracket and the silicone heating half-ring mold 131 from the pillar insulator 10. to complete a decontamination operation.

To sum up, the technical solution of the present invention has the following advantages:

1. According to the present invention, a flexible mold for removing contamination on the surface of the pillar insulator coating, the coating surface of the pillar insulator is covered with a decontamination material, and the contamination on the pillar insulator can be absorbed by the decontamination material, and the The decontamination material is covered with a heating sheet, and through the heating of the heating sheet, the temperature required for the conversion of the decontamination material from a solid state to a molten state is achieved, thereby realizing the adsorption of dirt on the decontamination material. A flexible bracket is provided next to the pillar insulator, and the flexible bracket includes a plurality of vertical rods parallel to the rod part of the pillar insulator and a plurality of transverse rods vertically connected with the vertical rods, and through the The vertical rod supports and positions the transverse rod, wherein the transverse rod extends between the sheds of the pillar insulator, and the part between the sheds on the transverse rod is elastically coated Polymer, since the elastic polymer can be deformed after being stressed, it can adapt to the difference of the umbrella diameter of the pillar insulator, and the elastic polymer is used to support the decontamination material and the heating sheet. The elastic pressure is generated, so that the heating sheet and the decontamination material are closely attached to the surface of the pillar insulator, which is beneficial to the decontamination operation, thereby ensuring the cleanliness of the coating surface of the pillar insulator.

2. The flexible mold for removing contamination on the surface of the pillar insulator coating according to the present invention, the heating plate is composed of two completely symmetrical semi-circular ring molds. The complete covering of the pillar insulator, wherein the heating piece is made according to the structure of the pillar insulator, and its outer diameter and inner diameter are selected according to the size required for the maximum shed covering of the pillar insulator.

Obviously, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation manner. For those of ordinary skill in the art, other different forms of changes or modifications can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. And the obvious changes or changes derived from this are still within the protection scope of the present invention.

Claims (10)

1. A flexible mold for removing contamination on the coating surface of a post insulator, wherein the coating surface of the post insulator is covered with a decontamination material, and the decontamination material is covered with a heating sheet, characterized in that: the post A flexible bracket is provided next to the insulator, and the flexible bracket includes a plurality of vertical rods parallel to the rod part of the post insulator and a plurality of transverse rods vertically connected with the vertical rods, wherein the transverse rods The rod element extends between the sheds of the pillar insulator, and the part between the sheds on the transverse rod is covered with elastic polymer. 2 . The flexible mold for removing contamination on the surface of the pillar insulator coating according to claim 1 , wherein a hollow slot is provided at the position where the vertical rod is connected to the transverse rod. 3 . 3. The flexible mold for removing contamination on the surface of the pillar insulator coating according to claim 1 or 2, wherein the transverse rod is a semi-circular ring, and the outer diameter of the semi-circular ring is smaller than the outer diameter of the smallest shed, The inner diameter of the semi-circular ring is larger than the inner diameter of the largest umbrella skirt. 4. The flexible mold for removing contamination on the coating surface of pillar insulators according to claim 1, wherein the inner diameter of the transverse rods covered with the elastic polymer is smaller than the inner diameter of the transverse rods without the elastic polymer coating, and the inner diameter of the transverse rods covered with the elastic polymer is The outer diameter of the transverse rod of the object is larger than the outer diameter of the transverse rod of the uncoated elastic polymer. 5. The flexible mold for removing contamination on the coating surface of pillar insulators according to claim 1, wherein the thickness of the transverse rods covered with the elastic polymer is greater than the thickness of the pillar insulators covered with the decontamination material and the heating sheet. thickness. 6 . The flexible mold for removing contamination on the surface of the pillar insulator coating according to claim 1 , wherein the transverse rod is fixed on the vertical rod by a dovetail nut. 7 . 7 . The flexible mold for removing contamination on the surface of the pillar insulator coating according to claim 1 , wherein the heating plate is composed of two completely symmetrical half-ring molds. 8 . 8 . The flexible mold for removing contamination on the surface of the post insulator coating according to claim 7 , wherein the semi-circular ring mold comprises a plug and a connector connected to the plug. 9 . 9 . The flexible mold for removing contamination on the surface of the pillar insulator coating according to claim 7 , wherein the outer diameter and the inner diameter of the heating piece are selected according to the size required for the largest shed covering of the pillar insulator. 10 . 10 . The flexible mold for removing contamination on the surface of the pillar insulator coating according to claim 1 , wherein the decontamination material is a polymer decontamination material. 11 .

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