CN-224231098-U - Heating simulation device of lightning arrester

Abstract

The utility model relates to a heating simulation device of a lightning arrester, which comprises a layered shell assembly, a multi-stage temperature control module and a valve plate simulation assembly, wherein the layered shell assembly comprises a plurality of coaxially arranged insulating sleeves, the outer surface of each insulating sleeve is provided with an annular heat dissipation groove, the multi-stage temperature control module comprises an independent heating unit and a main control box body which are arranged in the insulating sleeves, and the valve plate simulation assembly comprises a plurality of layers of stacked zinc oxide valve plates arranged in the independent heating unit, so that references can be provided for judging infrared temperature measurement defects of the lightning arrester in daily operation, maintenance and overhaul work.

Inventors

• KE YONGQIN
• ZHUANG HE
• AN GE

Assignees

• 国网福建省电力有限公司莆田供电公司
• 国网福建省电力有限公司

Dates

Publication Date

20260512

Application Date

20250530

Claims (6)

1. 1. The heating simulation device of the lightning arrester is characterized by comprising a layered shell assembly, a multi-stage temperature control module and a valve plate simulation assembly, wherein the layered shell assembly comprises a plurality of insulating sleeves (101) which are coaxially arranged, an annular heat dissipation groove (102) is formed in the outer surface of each insulating sleeve (101), the multi-stage temperature control module comprises an independent heating unit and a main control box body (201) which are arranged in the insulating sleeve (101), and the valve plate simulation assembly comprises a plurality of layers of stacked zinc oxide valve plates (301) which are arranged in the independent heating unit.
2. 2. The device for simulating the heating of the lightning arrester according to claim 1, wherein the main control box body (201) is internally provided with a programmable logic controller, a touch control panel is arranged on the surface of the main control box body, the independent heating unit comprises an annular resistance wire (206) and a ceramic base (207), the annular resistance wire (206) is nested in an annular groove on the inner wall of the ceramic base (207) and is connected with the main control box body (201) through a conductive lead, and the heating surface of the annular resistance wire (206) is in contact with the outer surface of the zinc oxide valve plate (301).
3. 3. A heating simulation device of a lightning arrester according to claim 1, wherein adjacent insulating sleeves (101) are fixed through a buckle type connecting ring (103), and micro air holes (104) are formed in an array of inner walls of the insulating sleeves (101).
4. 4. A heating simulation device of a lightning arrester is characterized in that the outer peripheral surface of the ceramic base (207) is in interference fit with the inner wall of the insulating sleeve (101), and a heat-conducting silica gel layer is filled between the ceramic base (207) and the insulating sleeve (101).
5. 5. A heating simulation device of a lightning arrester is characterized in that the outer edge of each zinc oxide valve plate (301) is provided with a heat conducting coating (302), the axially adjacent zinc oxide valve plates (301) are separated by a threaded insulating support column (303), and a heat conducting film is attached to the surface of each zinc oxide valve plate (301).
6. 6. The device for simulating the heating of a lightning arrester according to claim 2, wherein the multi-stage temperature control module further comprises a shunt relay which is respectively connected with each independent heating unit through a multi-core shielding cable, and a contact switch of the shunt relay is arranged in the main control box body (201).

Description

Heating simulation device of lightning arrester Technical Field The utility model relates to a heating simulation device of a lightning arrester, and belongs to the technical field of lightning arresters. Background When the simulation of the heating defect of the transformer equipment is carried out, the local heating defect of the zinc oxide lightning arrester is taken as a typical voltage heating defect, and the simulation is necessary. At present, when an operator carries out infrared temperature measurement, general detection is firstly carried out, after a temperature abnormal point is found, accurate detection is needed to be carried out so as to determine the temperature of a hot spot and a heating part, and the accurate detection requires that the operator operates the infrared thermometer more skillfully and has more reasonable equipment for instrument parameters. Especially, voltage heating type defects, because the temperature difference is small, the detection level of the operation and inspection personnel directly influences the accuracy of the detection result, and even heating points cannot be found. Therefore, providing a heating simulation device of a lightning arrester to provide a reference for judging the infrared temperature measurement defect of the lightning arrester in daily operation, maintenance and repair work is a technical problem which needs to be solved by a person skilled in the art. Disclosure of utility model In order to solve the problems in the prior art, the utility model provides a heating simulation device of a lightning arrester, which can provide a reference for judging infrared temperature measurement defects of the lightning arrester in daily operation, maintenance and overhaul work. The technical scheme of the utility model is as follows: The utility model provides a simulated device that generates heat of arrester, includes layered shell subassembly, multistage accuse temperature module and valve block simulation subassembly, layered shell subassembly includes a plurality of coaxial insulating sleeve that set up, and every insulating sleeve's surface is equipped with annular heat dissipation recess, multistage accuse temperature module is including setting up in insulating sleeve's inside independent unit and the master control box that generate heat, valve block simulation subassembly is including setting up in the inside zinc oxide valve block of multilayer stack of independent unit that generates heat. The independent heating unit comprises an annular resistance wire and a ceramic base, wherein the annular resistance wire is nested in an annular groove on the inner wall of the ceramic base and is connected with the main control box body through a conductive lead, and a heating surface of the annular resistance wire is in contact with the outer surface of the zinc oxide valve plate. The insulation sleeves are fixed through the snap-in connecting rings, and micro air holes are formed in the inner wall arrays of the insulation sleeves. The outer peripheral surface of the ceramic base and the inner wall of the insulating sleeve form interference fit, and a heat-conducting silica gel layer is filled between the ceramic base and the insulating sleeve. The outer edge of each zinc oxide valve plate is provided with a heat conducting coating, the axially adjacent zinc oxide valve plates are separated by a threaded insulating support column, and a heat conducting film is attached to the surface of each zinc oxide valve plate. The multi-stage temperature control module further comprises a shunt relay which is connected with each independent heating unit through a multi-core shielding cable, and a contact switch of the shunt relay is arranged in the main control box body. The utility model has the following beneficial effects: According to the utility model, through the cooperation of the coaxial insulating sleeves and the annular radiating grooves in the layered shell component, the linkage control of the independent heating units of the multi-stage temperature control module and the main control box body and the multi-layer zinc oxide valve block stacking structure of the valve block simulation component are combined, the accurate simulation of the axial gradient heating of the lightning arrester is realized, and the effect of reproducing the degradation thermal field distribution of the valve block of the real lightning arrester in a safe environment is achieved; Through the interference fit of the hierarchical assembly structure of the buckle type connecting ring and the heat-conducting silica gel layer, the rapid reconstruction of the thermal resistance gradient of the device is realized, and the effect of simulating the characteristics of the surface temperature field of the lightning arrester under different heat dissipation working conditions is achieved; Through the cooperation of the heat conduction coating of zinc oxide valve block outer fringe and surface he