CN2373878Y

CN2373878Y - Mutual inductor or transformer

Info

Publication number: CN2373878Y
Application number: CN 99204328
Authority: CN
Inventors: 黄建西
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-03-03
Filing date: 1999-03-03
Publication date: 2000-04-12
Anticipated expiration: 2009-03-03

Abstract

The utility model discloses a mutual inductor or a transformer, which comprises an iron core 1, a low-voltage coil 2, a high-voltage coil 3 and lead wires 4 of the high-voltage coil 3. The utility model is characterized in that the exterior of the high-voltage coil 3 is sealed by an insulating cylinder 10 and a silicon rubber pyrocondensation tube 6 or is sealed by the silicon rubber pyrocondensation tube 6; the lead wires 4 of the high-voltage coil are sealed by a silicon rubber pyrocondensation tube 5 hermetically connected with the silicon rubber pyrocondensation tube 6. The utility model has the advantages of simple structure, small size, light weight, long service life, low cost, no maintenance, dirt and dampness prevention, no porcelain fragile goods, convenient transportation, etc., and can be widely used in distribution equipment in power stations, industrial enterprises and mining enterprises.

Description

A kind of instrument transformer or transformer

The utility model relates to a kind of instrument transformer or transformer.

Existing instrument transformer or transformer can be divided into two kinds of oil immersed type and dry types.Inflammable and explosive, the easy moisture absorption that oil immersed type exists, easily aging, easy to leak and problem such as expand with heat and contract with cold.The seepage greasy dirt dyes environment, conceals and deposit fire trouble and cause oil starvation, need often supervision oil level, oil and maintenances such as power failure topping-up, cleaning, and volume is big, cost is high; Dry type adopts resin-cast, because resin is easily aging, easily be full of cracks, not anti-variation of ambient temperature and expose to the sun and rain, can not be used for problems such as open air, life-span be short.

The purpose of this utility model provides a kind of instrument transformer or transformer of making insulating material with silicon rubber exactly for addressing the above problem.

The technical solution of the utility model is: a kind of instrument transformer or transformer, and it comprises iron core, low-voltage coil, high-tension coil and lead-out wire thereof is characterized in that; High-tension coil external application insulating cylinder and the sealing of silicon rubber heat-shrink tube, or the sealing of high-tension coil external application silicon rubber heat-shrink tube; High-tension coil and lead-out wire thereof are sealed by the silicon rubber heat-shrink tube; Be tightly connected between silicon rubber pyrocondensation tube and tube.

The instrument transformer or the transformer that adopt this programme to make, compared with prior art have the following advantages: (1) is owing to adopted silicon rubber to make insulating material, saved transformer oil and related device fuel tank, oil conservator and dehydrating breather etc. make its volume little, in light weight, can exempt maintenances such as monitoring pasta height, oil ageing and the moisture absorption again, also need because of topping-up, changing oil has a power failure, and does not also have the oil seepage dirt of detest; (2) do not need porcelain bushing, can save its corresponding fixture, make little, in light weight, the no clashing and breaking of volume, easily transportation is easily installed; (3) anti-Japanese solarization, moisture resistance is wet, anti-aging, dielectric strength is high, and reliable operation, life-span are long; (4) fire-retardant, explosion-proof, cracking resistance, security of operation; (5) simple in structure, easy to process, lower because nothing is oily, no porcelain bushing can save its related device than oil immersed type cost, again because the high materials of silicon rubber insulation intensity province is also more cheap than the cost of resin material dry type.

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

Fig. 1 is the part section structural representation of the utility model voltage transformer or transformer.

Fig. 2 is the part section structural representation of the utility model current transformer.

As shown in Figure 1, this kind instrument transformer is that voltage transformer also is a kind of transformer, it comprises unshakable in one's determination 1, low-voltage coil 2, high-tension coil 3 and lead-out wire 4 thereof, low-voltage coil 2 and low-voltage coil lead-out wire (owing to not having specific characteristic to be omitted in the drawings) are housed on unshakable in one's determination 1, the low-voltage coil 2 outer insulating cylinders 10 that are with the band edge circle, because the high-tension coil number of turn of voltage transformer or transformer is many, lead is thin, with it on insulating cylinder 10, overlap a silicon rubber heat-shrink tube 6 again in the outside of high-tension coil and insulating cylinder 10, insulating cylinder 10 is tightly connected with silicon rubber heat-shrink tube 6, high-tension coil external application insulating cylinder 10 seals with silicon rubber heat-shrink tube 6 like this, so that itself and the external world are (as low-voltage coil, iron core etc.) insulation, high-tension coil two lead-out wires 4 put silicon rubber tubule 9 from root earlier and put silicon rubber heat-shrink tube 5 more outside, and silicon rubber heat-shrink tube 5 is tightly connected with pipe 6.Whole device body can be placed in the rainproof shell 7.The high-tension coil lead-out wire 4 that has silicon rubber heat-shrink tube 5 exposes the part of rainproof shell 7, can add silicon rubber full skirt 8 to increase creepage distance.

As shown in Figure 2, this kind instrument transformer is a current transformer, also is current transformer, and it comprises iron core 1, low-voltage coil 2, high-tension coil 3 and lead-out wire 4 thereof.On unshakable in one's determination 1 low-voltage coil 2 and low-voltage coil lead-out wire (being omitted in the drawings) are housed, the high-tension coil number of turn of current transformer is few, behind high-tension coil 3 coileds, refill outside low-voltage coil 2 after the heat-shrink tube 6 that becomes with wrapping of silicon rubber pyrocondensation belt half lap formula and pyrocondensation seals earlier, so that and external insulation.Between high-tension coil two lead-out wires 4 because voltage difference is little, can be from silicon rubber heat-shrink tube 5 of root trap, separately and with two finger gloves type silicon rubber heat-shrink tubes 11 put in terminal portions, silicon rubber heat-shrink tube 6, manage 5 and manage 11 and be tightly connected.Whole device body can be placed in the rainproof shell 7.The high-tension coil lead-out wire 4 that has silicon rubber heat-shrink tube 5, pipe 11 exposes the part of rainproof shell 7, can add silicon rubber full skirt 8.

Because reactor is identical with instrument transformer or transformer device structure, so also within the utility model protection range.

Claims

1. instrument transformer or transformer, it comprises iron core (1), low-voltage coil (2) and high-tension coil (3) and lead-out wire (4) thereof, it is characterized in that high-tension coil (3) external application insulating cylinder (10) and silicon rubber heat-shrink tube (6) sealing, or high-tension coil (3) external application silicon rubber heat-shrink tube (6) sealing; High-tension coil lead-out wire (4) is sealed by silicon rubber heat-shrink tube (5); Silicon rubber heat-shrink tube (5) is tightly connected with pipe (6).

2. instrument transformer according to claim 1 or transformer is characterized in that putting silicon rubber pyrocondensation tubule (9) earlier from the lead-out wire root outside the described high-tension coil lead-out wire (4), put silicon rubber heat-shrink tube (5) more outside.

3. instrument transformer according to claim 1 or transformer, it is characterized in that (4) two of described high-tension coil lead-out wires are from a silicon rubber heat-shrink tube of root trap (5), at terminal portions two lead-out wires separately and put two finger gloves type silicon rubber heat-shrink tubes (11) heat is roasting again and wrap, silicon rubber heat-shrink tube (5) is tightly connected with pipe (11).

4. instrument transformer according to claim 1 or transformer is characterized in that it also can put into rainproof shell (7), and the described high-tension coil lead-out wire (4) that is with silicon rubber heat-shrink tube (5) can add silicon rubber full skirt 8.