High-precision gas density relay

A gas density, relay technology, applied in the direction of circuits, electric switches, electrical components, etc., can solve problems such as poor anti-vibration performance, difficulty in ensuring reliable and safe operation of the power grid, and poor contact contact, so as to improve product adaptability and facilitate combination The effect of production and easy promotion and application

Active Publication Date: 2018-04-03
SHANGHAI ROYE ELECTRICAL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the signal mechanism (signal control part) of the sulfur hexafluoride gas density relay used to monitor the density of sulfur hexafluoride gas in high-voltage sulfur hexafluoride electrical equipment generally uses Baden tubes and contacts It is a magnetic-assisted contact, and its contact has the disadvantages of poor contact and poor anti-vibration performance, which makes it difficult to ensure reliable and safe operation of the power grid
Moreover, in some occasions, the temperature difference between the installation position of the density relay and the body of the electrical equipment is large, and ordinary gas density relays cannot meet the requirements for product accuracy in these occasions. Therefore, it is necessary to develop a gas density relay that can achieve high precision and high precision. Enables further optimization of density monitoring

Method used

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Embodiment 1

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0033] figure 1 and figure 2 It is a partial cross-sectional schematic diagram of a high-precision gas density relay according to Embodiment 1 of the present invention, as figure 1 and figure 2 As shown, the high-precision gas density relay of Embodiment 1 of the present invention includes: a watch case 22 , located inside the watch case 22 ,...

Embodiment 2

[0048] image 3 and Figure 4 It is a partial cross-sectional schematic diagram of a high-precision gas density relay according to Embodiment 2 of the present invention, as image 3 and Figure 4 As shown, the high-precision gas density relay of Embodiment 1 of the present invention includes: a watch case 22 , located inside the watch case 22 , a signal mechanism and an indication display mechanism that communicate with each other, and the signal mechanism is fixedly installed on the inner surface of the watch case 22 .

[0049] The signal mechanism is a sealed air chamber surrounded by the chassis 14, the housing 15 and the bottom plate 37, and the bellows 16 and the alarm assembly located inside the sealed air chamber. The bellows 17 controls the on or off of the micro switch assembly, and the sealed The gas chamber communicates with the display Baden tube 10 in the indication display mechanism.

[0050] One end of the bellows 16 is sealed and welded to the chassis 14, an...

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Abstract

The invention discloses a high-precision gas density relay. The high-precision gas density relay comprises a signal mechanism and an indicating value display mechanism connected with the signal mechanism and positioned outside the signal mechanism, wherein the signal mechanism comprises a sealed gas chamber defined by a chassis, a shell and a bottom plate, a corrugated pipe assembly positioned inthe sealed gas chamber and an alarming assembly; and switch-on or switch-off of the alarming assembly is controlled by a pressure difference between gas pressures in the sealed gas chamber and the corrugated pipe assembly. The high-precision gas density relay provided by the invention is provided with gas compensation and temperature compensation elements, so that the high-precision gas density relay and the optimal density monitoring can be realized; in addition, by arrangement of a temperature sensing bag, the density relay is more suitable for electrical equipment meeting a condition that atemperature difference between a mounting position of the density relay and an electrical equipment body is high; moreover, the density relay consists of a few modules, so that combinational production and individual design can be performed conveniently; and furthermore, the product adaptability can be improved to the maximum extent, and the relay can be popularized and applied very easily.

Description

technical field [0001] The invention belongs to the technical field of electric power, and in particular relates to a high-precision gas density relay. Background technique [0002] Electrical products have been widely used in the power sector, industrial and mining enterprises, and promoted the rapid development of the power industry. The arc extinguishing medium and insulating medium of electrical products are gases, which are prone to gas leakage. After gas leakage, the reliable and safe operation of electrical products cannot be guaranteed. Therefore, how to ensure the reliable and safe operation of electrical products has become one of the important tasks of the power sector . [0003] The insulating medium gas in the sealed insulation chamber of electrical products is an arc extinguishing medium, which is an indispensable gas to ensure the reliable operation of electrical products, especially in SF 6 / N 2 Ring network cabinets and other products. The gas density re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H35/28
CPCH01H35/28
Inventor 金海勇贺兵王恩林郝彩侠
Owner SHANGHAI ROYE ELECTRICAL CO LTD
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