CN102723170A

CN102723170A - On-load tap-switch separated-type oil chamber

Info

Publication number: CN102723170A
Application number: CN2012100002188A
Authority: CN
Inventors: 李紫薇
Original assignee: WUJIANG DONGTAI ELECTRIC POWER SPECIAL SWITCH CO Ltd
Current assignee: WUJIANG DONGTAI ELECTRIC POWER SPECIAL SWITCH CO Ltd
Priority date: 2012-01-04
Filing date: 2012-01-04
Publication date: 2012-10-10

Abstract

The invention provides an on-load tap-switch separated-type oil chamber. The on-load tap-switch separated-type oil chamber comprises an oil chamber body, wherein the oil chamber body is internally provided with a selector switch and a tap switch; a rotating shaft of the tap switch is provided with at least one insulated isolation layer; the edge of the insulated isolation layer is in airtight match with the oil chamber body; and the insulated isolation layer is provided with an oil port. As the oil chamber is divided into multiple chambers, the diffusion efficiency of the filtered oil is greatly reduced, and the mixing degree of the unfiltered oil and the filtered oil is reduced, so that more unfiltered oil can be absorbed by an on-load tap-switch oil filter, and the efficiency of the oil filter is improved.

Description

A kind of on load tap changer cellular-type grease chamber

Technical field

The present invention relates to the potential device field, especially, is a kind of on load tap changer cellular-type grease chamber.

Background technology

The on load tap changer oil filter is to switch in the grease chamber in order to solve on-load voltage regulating switch; Because arcing; Insulating oil very easily decomposes, wears out and produces a large amount of free carbons and metal fragment etc., causes the insulating oil puncture voltage to reduce, the product of dielectric property variation the problems referred to above research and development.It is mainly used in the filtration of transformer on-load tap changer insulating oil.Equipment can be under the situation of the normal operation of transformer; Switch instances automatic on-line oil strain according to tap changer; Effectively remove free carbon, moisture, cracking impurity and acid in the oil, recover the dielectric strength and the performance of shunting switch oil, improve fail safe, the reliability of on load tap changer operation; Significantly reduce the transformer frequency of power cut, improve power supply reliability.

The on load tap changer oil filter is positioned at the fuel sucking pipe oily sucking-off that loaded tap switch oil is indoor of bottom, loaded tap switch oil chamber through a mouth of pipe; Oil after filtering is flowed back to from the top again; Such design makes oil remove partial impurities, but effect is unsatisfactory, because the oil that refluxes diffuses to each place, grease chamber rapidly through the impulse force of remnants on the one hand; The heat that produces during on the other hand owing on load tap changer work makes fry dried food ingredients give birth to thermal convection; Under the effect of two aspects, the oil that the oil that has filtered is good with not having filtration merges rapidly, has influenced the effect of oil strain greatly.

Summary of the invention

In order to address the above problem, the object of the present invention is to provide a kind of on load tap changer cellular-type grease chamber, this grease chamber can strengthen the filter efficiency of on load tap changer oil filter.

The technical solution adopted for the present invention to solve the technical problems is:

This on load tap changer cellular-type grease chamber comprises the grease chamber; Be provided with diverter switch and shunting switch in the said grease chamber; The rotating shaft of said shunting switch is provided with one deck dielectric isolation layer at least, the edge of said dielectric isolation layer and grease chamber's air-tight fit, and said dielectric isolation layer is provided with hydraulic fluid port.

As preferably, said dielectric isolation layer is obliquely installed, and said hydraulic fluid port is arranged on dielectric isolation layer least significant end.

As preferably, said hydraulic fluid port is provided with the filter chamber, and said filter chamber top and hydraulic fluid port join, and bottom notch also is provided with permanent magnet, and wall is provided with filter screen.

As preferably, said dielectric isolation layer has two-layer when above, and the hydraulic fluid port of said adjacent dielectric isolation layer is with relative maximum distance setting.

The invention has the advantages that:

The grease chamber is isolated into a plurality of parts effectively reduces filter oil and the not degree of mixing of filter oil, effectively improved oil strain efficient.

Description of drawings

Fig. 1 is the structural representation of a kind of on load tap changer cellular-type of the present invention embodiment in grease chamber;

Fig. 2 is the structural representation of Fig. 1 embodiment filter chamber.

Among the figure: 1, grease chamber; 2, dielectric isolation layer; 21, hydraulic fluid port; 22, filter chamber; 23, permanent magnet; 24, filter screen; 3, rotating shaft.

Embodiment

Below in conjunction with accompanying drawing and embodiment the present invention is further specified:

Shown in Figure 1 is the planform sketch map of the embodiment in this on load tap changer cellular-type grease chamber, and Fig. 2 is the structural representation of Fig. 1 embodiment filter chamber, for the ease of saying something, Fig. 1, Fig. 2 is set forth the present invention as same embodiment at present.

In the present embodiment; This on load tap changer cellular-type grease chamber comprises grease chamber 1; Be provided with diverter switch and shunting switch in the said grease chamber 1; The rotating shaft 3 of said shunting switch is provided with three-layer insulated separator 2, the edge of said dielectric isolation layer 2 and grease chamber's 1 air-tight fit, and said dielectric isolation layer 2 is provided with hydraulic fluid port 21.

Above-mentioned on load tap changer cellular-type grease chamber, said dielectric isolation layer 2 is obliquely installed, and said hydraulic fluid port 21 is arranged on dielectric isolation layer least significant end, makes impurity under the effect of gravity, be not easy to produce deposition.

Above-mentioned on load tap changer cellular-type grease chamber, said hydraulic fluid port 21 is provided with

filter chamber

22, and 22 tops, said filter chamber and hydraulic fluid port 21 join; Bottom notch also is provided with permanent magnet 23, and wall is provided with filter screen 24, strengthens filter effect; Conductive impurity is in time removed, prevented fault.

Above-mentioned on load tap changer cellular-type grease chamber, the hydraulic fluid port 21 of said adjacent dielectric isolation layer 2 is with relative maximum distance setting, prolongs oil course grease chamber 1 in, reduces the filter oil and the degree of mixing of filter oil not, the enhancing grease chamber efficient of changing oil.

Above-mentioned on load tap changer cellular-type grease chamber operation principle:

Utilization is divided into a plurality of chambers with the grease chamber, greatly reduces filter oil diffuser efficiency, has reduced not filter oil and the mixability of filter oil, makes the on load tap changer oil filter suck the efficient that more not filter oil improves oil filter.

The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. on load tap changer cellular-type grease chamber; Comprise grease chamber (1); It is characterized in that: said grease chamber is provided with diverter switch and shunting switch in (1); The rotating shaft of said shunting switch (3) is provided with one deck dielectric isolation layer (2) at least, the edge of said dielectric isolation layer (2) and grease chamber (1) air-tight fit, and said dielectric isolation layer (2) is provided with hydraulic fluid port (21).

2. on load tap changer cellular-type according to claim 1 grease chamber is characterized in that: said dielectric isolation layer (2) is obliquely installed, and said hydraulic fluid port (21) is arranged on dielectric isolation layer (2) least significant end.

3. according to claim 1 or the described on load tap changer cellular-type of claim 2 grease chamber; It is characterized in that: said hydraulic fluid port (21) is provided with filter chamber (22); (22) top, said filter chamber and hydraulic fluid port (21) join; Bottom notch also is provided with permanent magnet (23), and wall is provided with filter screen (24).

4. according to claim 1 or the described on load tap changer cellular-type of claim 2 grease chamber, it is characterized in that: said dielectric isolation layer (2) has two-layer when above, and the hydraulic fluid port (21) of said adjacent dielectric isolation layer (2) is with relative maximum distance setting.