With economic development and scientific progress, the glass industry has also continued to advance, developing new varieties while also strengthening the original types of glass. Various types of deep-processed glass are gradually replacing ordinary flat glass and making a splash in their respective applications. In order to buy better quality and reasonably priced glass insulators, we need to have a certain understanding of them, let's take a look.
1、The basic concept of Suspension insulator
Suspension insulator is generally made of insulating parts (such as porcelain parts, glass parts) and metal accessories (such as steel feet, iron caps, flanges, etc.) glued together with adhesive or mechanically stuck together. Insulators are widely used in power systems and generally belong to the external insulation, working under atmospheric conditions. Overhead transmission lines, busbars of power plants and substations, and external live conductors of various electrical equipment must be supported by insulators and insulated from the earth (or grounded objects) or other conductors with potential differences.
Insulators are divided into two categories: line insulators and pillar insulators. Insulators for overhead lines are called line insulators, and pillar insulators are mainly used in power stations. According to the different uses, line insulators are divided into suspension insulator and tension insulator. suspension insulator is used to suspend the overhead conductor, tension insulator needs to bear the tension of the wire, mainly used in the beginning and end of the line, line bend and other parts. According to the insulating material, there are three categories of insulators: electric porcelain, glass and composite insulators.
2、The importance of Suspension insulator in the power system
Suspension insulator in the network operation of a large number of insulators, insulator deterioration on the safe and stable operation of the power system has a serious threat. The insulator measurement zero infrared technology, on the other hand, is a method to evaluate the electrical equipment condition of insulators based on infrared imaging patterns by integrating the infrared diagnostic technology of charged equipment to test the temperature of various insulators in substations.
In the past, the traditional test method used spark gap test, which required manual climbing up the tower and testing piece by piece, with the problems of heavy workload, poor safety and high leakage rate. With the adoption of the insulator infrared zero measurement technology, the operational risks are effectively avoided, while the test convenience and efficiency are greatly improved. The technology can accurately, effectively and conveniently detect the deterioration of the suspension type insulator in the institute, effectively escorting the safety of the power grid equipment.
3, suspension type insulator installation should meet the requirements
(1) Except for the design reason, the suspension type insulator string should be vertical to the ground, when the conditions can not meet the requirements, there can be an inclination angle of not more than 5 °.
(2) When insulators are connected in parallel, the tension on each string shall be uniform.
(3) when the suspension type insulator string is combined, the bolts, pins and locking pins of the connecting fixtures must conform to the current standards and be complete, and their wearing direction should be consistent, the bowl of the tension insulator string should be up, and the ball head hanging ring, bowl head hanging plate and locking pins of the insulator string should match each other.
(4) The spring pin should be flexible enough, the closed pin must be separated and should not be broken or cracked, and it is forbidden to use wire instead.
(5) the pressure ring, shielding ring and other protection devices should be installed firmly, the location should be correct.
(6) insulator string should be clean before lifting.
2021/02/01
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