WO2016127508A1 - Device for coating rtv anti-fouling flashover coating on ceramic or glass umbrella-type and bell-type insulators - Google Patents

Abstract

A device for coating RTV anti-fouling flashover coating on ceramic or glass umbrella-type and bell-type insulators, comprising a main machine frame (1), a machine head rotating frame (7), a deceleration frequency modulation motor (8), and an insulator quick-fit connector (9); the machine head rotating frame is rotatably connected to the main machine frame by means of a rotating-angle shaft and the bearing supports (4) at the two ends thereof, the deceleration frequency modulation motor being fixedly arranged on the machine head rotating frame, and the output end of the deceleration frequency modulation motor being connected to the insulator quick-fit connector. The advantageous effects thereof are: the quality of dip-coated ceramic or glass insulators of different specifications is stable, and the surface thereof is glossy and bubble-free, there is no build-up or dripping of the coated layer, and thickness is uniform; during the coating process, VOC emissions are low, and production is environmentally friendly and safe; the dip-coating is highly automatised, operation is easy, and the device can be used to implement industrialised automated coating of RTV anti-fouling flashover coating onto ceramic and glass insulators, saving substantial costs.

Description

Equipment for coating RTV anti-smudge flash coatings for porcelain or glass umbrella type and bell-type insulators Technical field

The invention relates to the technical field of coating dip coating, in particular to a device for coating RTV anti-smudge flash coating of porcelain or glass umbrella type and bell-type insulator, and is mainly used for dip coating of porcelain or glass umbrella type and bell-type insulator.

Background technique

Porcelain or glass umbrella type and bell-type insulators are widely used in substations, and are a common outdoor insulator. Its application place determines its need for good antifouling performance. In order to avoid the occurrence of pollution flashover accidents, various measures such as adjusting the creepage distance, water rinsing, semiconductor glaze insulator and spraying hydrophobic paint are generally adopted. However, in the anti-pollution work of the substation, the method of adjusting the climb is limited, and the replacement of equipment or external insulation components is time-consuming and costly. Although the water washing method is effective, it is very difficult to maintain. Therefore, in order to improve the electrical performance of ceramic or glass insulators under wet conditions, it is generally used to spray RTV anti-smudge flash coating on the surface, using the hydrophobicity and hydrophobic migration of RTV anti-fouling coating to ensure the insulator. The flashover voltage does not decrease.

At present, the common methods for applying RTV anti-smudge flash coating on porcelain or glass umbrella type and bell-type insulators are manual brushing, manual dip coating and artificial air spraying, but these three methods have their own shortcomings.

Manual brushing method: In the past, it was only required to be usable and durable, and there was no requirement for quality and appearance, and the market demand was relatively small. This method is popular. However, with the rapid development of the market, the power industry has higher and higher requirements for the construction quality of RTV anti-smudge flash coatings, and more and more manufacturers of insulators, the competition is becoming more and more fierce, and the quality requirements for products. It is also getting higher and higher, and the disadvantages of artificially brushing insulators are gradually highlighted. For example, the coating has poor uniformity, poor appearance quality, a small amount of bubbles inside the coating, low production efficiency, and higher labor costs.

Manual dip coating method: the coating is relatively uniform, but the quality stability of the product is not high, and it is greatly affected by human factors, and it is prone to defective products. Moreover, the labor intensity is large, and the efficiency of dip coating is still low, which cannot meet the market demand.

Artificial air spray method: This method also has shortcomings. First, due to the special structure of the umbrella and bell-shaped insulator, the shape is complex, especially for the umbrella insulators of the second, third or more layers. The seam of the umbrella ring is deep, and the dead angle is easy to occur during the spraying process. Second, the spraying is uneven. The thickness is not easy to grasp, and it is easy to produce quality defects such as dripping, skinning, accumulation and bubble generation; third, in the spraying process, in order to achieve a certain coating thickness, it is necessary to repeatedly perform the procedures of spraying and drying, which cannot be completed in one time. Spraying, time-consuming and labor-intensive, low efficiency; Fourth, during the spraying process, the volatile solvent in the coating is high, at least 50%, the pollution to the environment is large, and the human health threat is also large, and the artificial painting and The volatile solvent discharge by manual dip coating is basically less than 50%, which is relatively safer.

Claims (11)

Equipment for coating RTV anti-smudge flash coatings for porcelain or glass umbrella type and bell-type insulators, including: main frame (1), head rotating frame (7), deceleration frequency modulation motor (8) and insulator fast Connecting the connector (9), the head rotating frame (7) is rotatably connected to the main frame (1) through a corner shaft and a bearing block (4) at both ends thereof, the mechanism rotating frame (7) A deceleration frequency modulation motor (8) is fixedly disposed on the upper side, and an output shaft of the deceleration frequency modulation motor (8) is connected to the insulator quick connector (9). The apparatus for coating RTV anti-smudge flash paint for porcelain or glass umbrella type and bell-type insulator according to claim 1, further comprising: a PLC control box (2), said deceleration frequency modulation motor (7) Connect to the PLC control box (2) via the data cable. The apparatus for coating RTV anti-smudge flash paint for porcelain or glass umbrella type and bell-type insulator according to claim 1 or 2, characterized by further comprising a corner reducer (5) and a corner motor (6) The input end of the corner reducer (5) is connected to the output shaft of the corner motor (6), and the output end of the angle reducer (5) is connected to the bearing housing (4). The apparatus for coating RTV anti-smudge flash paint for porcelain or glass umbrella type and bell-type insulator according to claim 3, wherein said corner motor (6) passes through a data line and said PLC control box ( 2) Connect. The apparatus for coating RTV anti-smudge flash paint for porcelain or glass umbrella type and bell-type insulator according to claim 2, 3 or 4, characterized in that: the PLC control box (2) is also externally connected to one Switch control button (3). The apparatus for coating an RTV anti-smudge flash paint for porcelain or glass umbrella type and bell-type insulator according to any one of claims 1 to 5, characterized in that the end of the output shaft of the deceleration frequency modulation motor The structure comprises a quick joint main shaft (801) and a quick joint nut (805), and a taper guiding hole (803) is axially opened in the lower end portion of the quick joint main shaft (801), and the inner end of the taper guiding hole (803) is further along A rectangular hole (802) is axially opened, and a short joint nut hanging edge (804) is further disposed on the outer surface of the lower end of the quick joint main shaft (801), and the joint nut (805) is opened on the inner surface of the inner hole The thread (806) and the quick joint nut (805) also open a circular through hole matching the quick joint main shaft (801) on the upper end cover, and use the through hole to cover the quick joint main shaft (801) to slide down until The quick joint nut hanging edge (804) is blocked. The apparatus for coating RTV anti-smudge flash paint for porcelain or glass umbrella type and bell-type insulator according to claim 6, wherein the taper guiding hole (803) has a taper of 1-30°, preferably 2-15°, preferably 3°. The apparatus for coating an RTV anti-smudge flash coating for porcelain or glass umbrella type and bell-type insulator according to claim 6 or 7, wherein the insulator quick connector (9) comprises a connecting rod main body (906). a bolt hole (907) bolted to the insulator is disposed at a bottom of the connecting rod main body (906), and an upper portion of the connecting rod main body (906) is From top to bottom, it is divided into a rectangular segment (902), a guiding column segment (903) and a quick-connecting thread segment (904), and the surface of the connecting rod body (906) is also disposed at a position below the quick-connecting thread segment (904). Loading and unloading the hanging rod (905). The insulator connecting rod according to claim 8, wherein a hook hole (901) is further disposed on the top of the rectangular section (902). The insulator connecting rod according to claim 8 or 9, wherein the guide post section (903) has a taper of 3°.

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