CN2758728Y

CN2758728Y - Detector for safety valve of transformer

Info

Publication number: CN2758728Y
Application number: CN 200420057526
Authority: CN
Inventors: 马云; 唐欣
Original assignee: 唐欣
Priority date: 2004-11-16
Filing date: 2004-11-16
Publication date: 2006-02-15

Abstract

The utility model discloses a detector for a safety valve of a transformer, which comprises a casing with a cavity, wherein the top of the casing is provided with an air inlet pipe, a pressure meter and an air suction pipe; the end heads of the air inlet pipe, the pressure meter and the air suction pipe are communicated with the cavity of the casing; the lower end of the casing is provided with an oil outlet pipe, and the other end head of air suction pipe is communicated with an air inlet pipe of a vacuum pump; a valve is arranged on the air inlet pipe, an oil outlet valve is arranged on the oil outlet pipe and the bottom edge of the casing is provided with a sealing gasket. The utility model with short detecting period, workload reduction and high work efficiency can carry out the real-time detecting of the safety valve of the transformer in the field.

Description

Transformer safety valve pick-up unit

Technical field

The utility model relates to a kind of pick-up unit of transformer safety valve.

Background technology

Power transformer internal short-circuit occurs or loads when excessive in the process of working long hours, can be because inner temperature ultra-high conducting cause transformer oil and sharply expand, and this just needs the transformer safety valve to open automatically, and the release portion conduction oil is blasted to avoid transformer.Take place for fear of accident, all will regularly detect the transformer safety valve.Existing detection technique is such: after safety valve is removed from transformer, send monitoring station back to and detect, after detection finishes, install again again.The defective that prior art exists is: sense cycle is long, labor capacity is big, inefficiency.

Summary of the invention

The technical problems to be solved in the utility model provides a kind of pick-up unit of transformer safety valve, when utilizing this pick-up unit that the transformer safety valve is detected, does not need safety valve is removed from transformer, can carry out on-the-spot in real time the detection.

For solving the problems of the technologies described above, transformer safety valve pick-up unit of the present utility model comprises a housing that has cavity, at the top of housing draft tube, tensimeter, exhaust tube are installed, the termination of draft tube, tensimeter, exhaust tube communicates with the cavity of housing, lower end at housing is equipped with draw-off pipe, and another termination and the vacuum of exhaust tube pump into tracheae and be communicated with, and valve is installed on the draft tube, the oil extraction valve is installed on the draw-off pipe, is provided with seal gasket at the bottom margin of housing.

Compared with prior art, the utility model can detect the transformer safety valve at the scene in real time, and sense cycle shortens greatly, has reduced workload, has improved work efficiency.

Description of drawings

Fig. 1 is a transformer safety valve pick-up unit structural representation.

Embodiment

Transformer safety valve pick-up unit comprises a housing 2 that has cavity 7, and the outer shape of housing 2 can be selected box-shaped, the multiple shape such as pot shape etc. of back-off, and present embodiment is the pot shape of a back-off.Draft tube 4, tensimeter 5, exhaust tube 6 are installed at the top of housing 2, the termination of draft tube 4, tensimeter 5, exhaust tube 6 communicates with the cavity 7 of housing 2, in the lower end of housing 2 draw-off pipe 8 is installed, another termination and the vacuum of exhaust tube 6 pump into tracheae and are communicated with, on the draft tube 4 valve is installed, the oil extraction valve is installed on the draw-off pipe 8, is provided with seal gasket 9 at the bottom margin of housing 2.

Operating process of the present utility model is: transformer safety valve pick-up unit is buckled on transformer 1 table top of transformer safety valve 3 outer rims, connect vacuum pump, extract the gas in the housing cavity 7, make and form negative pressure in the cavity 7, because the bottom margin of housing 2 is provided with seal gasket 9, housing 2 closely contacts with transformer 1 table top of safety valve 3 outer rims, when the negative pressure in the cavity 7 during to certain numerical value, transformer safety valve 3 is opened, whether read tensimeter 5 numerical value this moment, it is up to standard to detect this safety valve 3.Open draft tube 4 valves, draw-off pipe 8 valves, the transformer oil that will overflow is refunded and is got final product.

Claims

1, transformer safety valve pick-up unit comprises a housing (2) that has cavity (7), it is characterized in that, at the top of housing (2) draft tube (4) is installed, tensimeter (5), exhaust tube (6), draft tube (4), tensimeter (5), the termination of exhaust tube (6) communicates with the cavity (7) of housing (2), in the lower end of housing (2) draw-off pipe (8) is installed, another termination of exhaust tube (6) pumps into tracheae with vacuum and is communicated with, draft tube is equipped with valve on (4), draw-off pipe is equipped with the oil extraction valve on (8), is provided with seal gasket (9) at the bottom margin of housing (2).