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SF6-gas density relay

A density relay and gas density technology, applied in the direction of circuits, electric switches, electrical components, etc., can solve the problems of insufficient temperature compensation performance, large influence on the application range, and small application range, so as to improve the contact performance and precision performance and application range, improve temperature compensation accuracy, and ensure reliable operation

Inactive Publication Date: 2010-11-10
SHANGHAI ROYE ELECTRIC SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1. Due to this SF 6 The gas density relay is to measure SF 6 The relative pressure of the gas is greatly affected by the change of altitude and atmospheric pressure, so it cannot guarantee the reliable operation of the system
[0008] 2. Due to this SF 6 The temperature measured by the gas density relay is the temperature at the density relay. 6 It is not suitable for occasions where the temperature difference between the device and the density relay is large, so its application range is small
[0009] In summary, all current SF 6 The temperature compensation performance of the gas density relay is not good enough, or the contact contact is not stable enough, or the application range is greatly affected by the altitude

Method used

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Examples

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Embodiment Construction

[0034] In order to better understand the technical solution of the present invention, it will be described in detail below through specific embodiments in conjunction with the accompanying drawings:

[0035] In this embodiment, an action contact relay with three micro-switches is taken as an example. The adjusting part is fixed on the contact operating arm, and the contact operating arm is fixed on the end base. The adjusting part controls the micro-switches and outputs signals.

[0036] See image 3 and Figure 4 and combine figure 1 and figure 2 , the inventive SF 6 The gas density relay is mainly composed of joint 29, housing 31, dial 34, pointer 19, main Bourdon tube 1, compensating Bourdon tube 2, base 3, three micro switches 41, 42, 43, bulkhead 5, terminal Seat 6, connecting rod 7, fixed plate 8, movement 9, air pipe 10, three adjustment parts 111, 112, 113, contact operating arms 12, 13, terminal block 28, printed circuit board 36, electric wire 37, watch glass 3...

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Abstract

The invention discloses an SF6-gas density relay comprising a base, a main Bourden tube, a compensation Bourden tube, a plurality of microswitches and regulating parts corresponding to the microswitches, wherein one end of the main Bourden tube is welded on the base and is communicated with the base, and the other end is welded on a choke plug, whereas one end of the compensation Bourden tube is welded on the choke plug, and the other end is welded on a terminal block; sealing gas is filled in the compensation Bourden tube, and the compensation Bourden tube takes the temperature compensation effect on the density relay; the signal output contact of the density relay adopts the microswitches, thereby thoroughly solving the problems that temperature compensation is difficult, the contact is poor and the density relay is influenced by altitude and barometric pressure. Moreover, the SF6-gas density relay has very high vibration resistance, can completely overcome the oil leak problem due to not being filled with silicone oil, and can be well applied to SF6-gas electrical equipment. An SF6-gas density switch adopting the technical scheme has reasonable design, stable and reliable work, more accurate temperature compensation performance and higher accuracy.

Description

technical field [0001] The invention relates to a relay, in particular to a relay used in SF 6 (Sulfur hexafluoride) SF on electrical equipment 6 Gas density relay. Background technique [0002] SF 6 Electrical products have been widely used in the power sector, industrial and mining enterprises, and promoted the rapid development of the power industry. Guaranteed SF 6 The reliable and safe operation of electrical products has become one of the important tasks of the power sector. SF 6 The arc extinguishing medium and insulating medium of electrical products are SF 6 Gas, no air leakage can occur, if there is an air leakage, the SF cannot be guaranteed 6 Electrical products operate reliably and safely. So monitor SF 6 SF for electrical products 6 The density value is very necessary. Now used to monitor SF 6 Density generally adopts a mechanical pointer density relay, which has when SF 6 When an electrical product leaks, it can display the density value on site, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H35/36
Inventor 金海勇金海生杨小国叶小伟夏铁新
Owner SHANGHAI ROYE ELECTRIC SCI & TECH
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