CN205581256U - Dead end insulator shields cover testing platform - Google Patents

Abstract

The utility model relates to a detection platform for a strain-resistant insulator shielding cover, which includes an insulation detection platform, and is characterized in that the insulation detection platform is provided with a bracket with a cross arm, and the cross arm is covered with an inner electrode with an opening groove on the lower side. There is an extruded insulation layer between the arm and the inner electrode, and a terminal is provided on the upper end of the inner electrode at the front end of the cross arm, and the terminal is connected with the grounding lead. The high-voltage power supply is connected, and a control switch is provided on the wire. It has the advantages of simple operation, convenient installation and disassembly, and high work efficiency. The detection and test phenomena are vivid and obvious, and it is easy to judge the experimental results.

Description

A testing platform for strain insulator shielding cover

technical field

The utility model relates to a safety detection device for an electric power system, in particular to a detection platform for a tension insulator shielding cover with simple operation and high precision.

Background technique

We know that the strain insulator shield is a shield for the strain insulator. When the power supply is maintained, when the live worker accidentally collides (that is, wipes the contact), it prevents the human body from directly contacting the charged body or the grounding body. The function of the insulator plays the role of insulation shielding or isolation protection. The quality of the shielding cover and insulation performance of the strain insulator directly determines the safety of live workers. Due to the small air gap of power equipment and the small safety distance during operation, live work in distribution network puts forward higher requirements on the insulation performance of insulation shielding appliances. During the use of the strain insulator shielding cover, its insulation performance is damaged mainly due to two reasons: 1. The insulation equipment and the sharp parts of the equipment are scratched; 2. The insulation equipment suffers from overvoltage and causes insulation breakdown. Among them, the first type of damage can be directly detected by the naked eye, but the equipment whose insulation has been broken down has no obvious trauma, and cannot be found and replaced in time, which poses a great threat to the safety of workers. Now, in order to prevent hidden dangers of live working equipment, To prevent personal accidents, the maximum service life of the above-mentioned insulation equipment is set to 5 years, and they will be replaced uniformly when the time comes. The disadvantage is that although some insulation jackets have not reached the service life, they are slightly scratched by the insulation equipment and the sharp parts of the equipment. Or the insulating equipment suffers from overvoltage and causes insulation breakdown, which still fails to meet the safety standards and threatens the safety of the work. In addition, although some insulating coats have reached the service life, they are still very good for insulation and fully meet the use standards. To replace, will cause a lot of waste.

Contents of the invention

The purpose of this utility model is to overcome the deficiencies of the prior art and provide a detection platform for strain insulator shielding covers with simple operation and high precision, which ensures the personal safety of live workers.

For achieving the above object, the technical scheme that the utility model adopts is:

A strain-resistant insulator shielding cover detection platform, including an insulation detection platform, is characterized in that the insulation detection platform is provided with a bracket with a cross arm, and the cross arm is covered with an inner electrode with an open groove on the lower side, and the cross arm is connected to the inner electrode. There is an extruded insulation layer between them, and the upper end of the inner electrode at the front end of the cross-arm is provided with a terminal, which is connected to the grounding lead. There is a high-voltage terminal on the bracket at the rear of the cross-arm, and the high-voltage terminal is connected to the high-voltage power supply through a wire. , There is a control switch on the wire.

The inner electrode described in the utility model is in the shape of a stepped cylinder with an open groove on the lower side, the large end of the inner electrode is close to the bracket, and the distance between the inner electrode and the bracket is not less than 20cm to ensure its insulation effect.

In the utility model, an extruded insulation layer protruding from the inner electrode is arranged in the open groove at the lower end of the inner electrode to improve the insulation effect.

When the utility model is used, the tension insulator is covered on the inner electrode, and the rated voltage of 10kV and the power frequency voltage of 45kV are connected through the control switch to detect the power frequency withstand voltage. The detection time lasts for 1min, such as the strain insulator to be tested If there is no breakdown, no flashover, and no obvious heating in each part of the shielding cover sample, the strain insulator shielding cover has passed the test and can be used, otherwise it is a substandard product. It has the advantages of simple operation, convenient installation and disassembly, and high work efficiency. The detection test phenomenon is vivid and obvious, which is convenient for judging the test results.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model.

Fig. 2 is a sectional view of the utility model at A-A.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in the figure, a testing platform for a strain insulator shielding cover includes an insulation testing platform 1, which is characterized in that the insulation testing platform 1 is provided with a bracket 3 with a cross arm 2, and the cross arm 2 is covered with an opening on the lower side The inner electrode 4 of the groove, the extruded insulation layer 5 is arranged between the cross arm 2 and the inner electrode 4, the upper end of the inner electrode 4 at the front end of the cross arm 2 is provided with a terminal 6, the terminal 6 is connected with the grounding lead wire, the rear end of the cross arm The bracket is provided with a high-voltage terminal 7, the high-voltage terminal 1 is connected to the high-voltage power supply through a wire, a control switch is provided on the wire, and the inner electrode is in the shape of a stepped cylinder with an open slot on the lower side. The end is close to the bracket, and the distance between the inner electrode and the bracket is not less than 20cm to ensure its insulation effect. The open groove at the lower end of the inner electrode is provided with an extruded insulation layer protruding from the inner electrode to improve the insulation effect. The shielding cover of the strain insulator is covered on the inner electrode, and the rated voltage of 10kV and the power frequency voltage of 45kV are connected through the control switch to carry out the power frequency withstand voltage test. The detection time lasts for 1min. Breakdown, no flashover, no obvious heating, then the tension insulator shielding cover has passed the test and can be used, otherwise it is a substandard product. It has the advantages of simple operation, convenient installation and disassembly, and high work efficiency. The detection test phenomenon is vivid and obvious. It is easy to judge the experimental results.

Claims (3)

1. a strain insulator mask detection platform, including Insulation monitoring platform, it is characterized in that Insulation monitoring platform is provided with the support of band cross-arm, being cased with downside on cross-arm and be provided with the interior electrode of open slot, be provided with plastic extruding insulated layer between cross-arm and interior electrode, the interior electrode upper end of cross-arm front end is provided with binding post, binding post is connected with ground lead, the support of cross-arm rear end is provided with high tension terminal, and high tension terminal is connected with high voltage power supply through wire, and wire is provided with control switch.

A kind of strain insulator mask detection platform the most according to claim 1, it is characterised in that interior electrode is the stepped cylindrical tubular that downside is provided with open slot, the stub end of interior electrode is not less than 20cm near support, interior electrode with the spacing of support.

A kind of strain insulator mask detection platform the most according to claim 1, it is characterised in that be provided with the plastic extruding insulated layer of electrode in protruding in the open slot of interior electrode lower end.