CN211062567U

CN211062567U - Dry-type air-core reactor

Info

Publication number: CN211062567U
Application number: CN201921340163.9U
Authority: CN
Inventors: 徐位宏; 刘全峰; 梁艺超; 刘涛; 苗海涛; 刘成; 赵倩; 聂闯
Original assignee: Xi'an Herong Electric Power Equipment Co ltd
Current assignee: Xi'an Herong Electric Power Equipment Co ltd
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2020-07-21
Anticipated expiration: 2029-08-16

Abstract

The utility model provides a dry-type air-core reactor, the outside that the electromagnetism line film wraps up is wrapped up again has the one deck non-woven fabrics, then passes through the one deck of the resistant elastic glue of F498 high performance again, makes the non-woven fabrics and the resistant elastic glue of F498 high performance form the fine and close protective layer of one deck, is provided with the epoxy cushion block on the lower electrically conductive arm, and the electromagnetism line begins the coiling upwards from the up end of epoxy cushion block, is provided with the clearance between the lower terminal surface of electromagnetism line and last electrically conductive arm and forms the end insulation. The reactor can run outdoors for more than 20 years, can bear minus 40 ℃ to 150 ℃, can well play a role in water resistance, has short curing time, has the glass transition temperature of more than or equal to 130 ℃, the tensile strength of more than or equal to 10Mpa and the elongation of more than or equal to 180 percent, and has small overall size, light weight, simple structure, convenient operation, high production efficiency, energy conservation and consumption reduction.

Description

Dry-type air-core reactor

Technical Field

The utility model relates to a reactor in the electric power industry, specifically speaking relate to a dry-type air-core reactor.

Background

Since the innovation is open, the construction of the power grid in China is accelerated, the scale is enlarged, and the construction of the transformer substation is increased day by day. With the development of science and technology and the progress of society, people have stronger and stronger consciousness of protecting nature, and the oil-free dry-type air-core reactor gradually becomes the mainstream of a reactor product and is widely applied to the field of power transmission and transformation. The dry-type air-core reactor has the advantages of small loss, low noise, simple maintenance, no magnetic saturation phenomenon, good reactance value linearity and the like, and is more and more widely applied to a power grid. At present, 65% -75% of reactors for capacitor banks of 35kV and below adopt dry hollow structures. The dry-type air-core reactor is usually installed outdoors, the operation condition is relatively severe, a series of severe environment conditions such as illumination, rain, wind, cold and hot alternation, high temperature and the like are borne for a long time, the service life of the insulating layer directly influences the operation service life of the reactor, and therefore the reactor insulating material is required to have excellent performances such as weather resistance, heat resistance, water resistance, cracking resistance and the like. The encapsulation of the dry-type air reactor is formed by winding glass fiber yarns impregnated with epoxy resin glue, the epoxy resin is widely applied to the reactor industry due to high cost performance, and the current cured products of the epoxy resin of an insulation system have high brittleness, low insulation grade and poor weather resistance, so that the dry-type air reactor has frequent accident barriers, damages and even burning accidents, and certain influence is caused on the safe operation of a power grid.

The existing dry-type air reactor adopts glass fiber yarns impregnated with epoxy resin, an encapsulating insulating layer is formed by winding the inner surface and the outer surface of an electromagnetic wire, and the high-temperature curing is required for more than 20 hours after the winding is finished.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a dry-type air-core reactor.

The utility model aims at solving through the following technical scheme: the utility model provides a dry-type air-core reactor, includes upper and lower star conductive arm, twines multilayer electromagnetic wire between the upper and lower conductive arm, and the electromagnetic wire adopts three-layer film half-lap to wrap up, is provided with the air flue stay between every layer of electromagnetic wire, the outside of electromagnetic wire film wrapping is wrapped up again has the one deck non-woven fabrics, and the electromagnetic wire surface of wrapping up the non-woven fabrics again passes through polyurea material parcel one deck again, makes non-woven fabrics and polyurea material form the protective layer that the one deck is fine and close, is provided with the epoxy cushion block on the lower conductive arm, and the lower extreme of epoxy cushion block is provided with the draw-in groove card and on lower conductive arm, and the electromagnetic wire begins the coiling upwards from the up end of epoxy cushion block, winds the lower terminal surface of last conductive arm.

In the scheme, the air passage stay is only provided with one air passage stay in the middle of the partition of the star-shaped conductive arm.

In the scheme, the side surfaces of the upper and lower conductive arms are provided with threaded connecting holes, a connecting lath with the same width as an air passage stay is arranged between the upper and lower conductive arms, and the upper and lower ends of the connecting lath are respectively fastened and connected with the upper and lower conductive arms by bolts.

In the scheme, the cushion block is made of epoxy resin materials.

In the scheme, the connecting lath is made of epoxy resin materials.

In the scheme, the polyurea material is F498 high-performance weather-resistant elastic glue, the F498 high-performance weather-resistant elastic glue is prepared by modified polyaspartic acid ester and modified isophorone diisocyanate according to the weight ratio of 100:80, the viscosity of the modified polyaspartic acid ester is 1200-1500 mpa.s, and the viscosity of the modified isophorone diisocyanate is 400-600 mpa.s.

Compared with the prior art, the utility model, its beneficial effect is:

1. the F498 high-performance weather-resistant elastic adhesive has excellent weather resistance and can run outdoors for more than 20 years; the high and low temperature resistant cold and hot circulation does not crack and can bear the temperature of-40 to 150 ℃; the waterproof and hydrophobic effects are good, and the waterproof effect can be well achieved; the curing time is short, the next procedure operation can be carried out after 6-8 hours, the curing can be completed within 7 days, the glass transition temperature is not less than 130 ℃, the tensile strength is not less than 10Mpa, and the elongation is not less than 180%.

2. The dry-type air-core reactor is integrally assembled, and has a simple structure and convenient operation.

3. The whole size and weight of the dry-type air-core reactor are about 30% smaller than those of the conventional product.

4. The dry-type air reactor is integrally cured at normal temperature, has high production efficiency, saves energy, reduces consumption and reduces the overall cost by more than 10 percent compared with the traditional structure.

Drawings

Fig. 1 is a schematic structural diagram of the novel dry-type air-core reactor.

Fig. 2 is a top view of fig. 1.

Fig. 3 is an enlarged view at a in fig. 1.

Fig. 4 is a sectional view B-B in fig. 3.

In the figure: 1. the structure comprises an upper conductive arm, 2 bolts, 3 epoxy battens, 4 electromagnetic wires, 5 air flue supporting strips, 6 epoxy cushion blocks, 7 lower conductive arms, 8 end insulators, 9 clamping grooves and 10 non-woven fabrics.

Detailed Description

The dry-type air-core reactor of the present invention is further described with reference to the accompanying drawings:

fig. 1 is a schematic structural view of the present invention using a novel dry type air-core reactor, fig. 2 is a plan view of fig. 1, fig. 3 is an enlarged view of a point a in fig. 1, and fig. 4 is a sectional view of B-B in fig. 3. In the figure, the dry-type air-core reactor comprises an upper star-shaped conducting arm 1 and a lower star-shaped conducting arm 7, a plurality of layers of electromagnetic wires 4 are wound between the upper conducting arm and the lower conducting arm, the electromagnetic wires 4 are wrapped by three layers of films in a half-overlapping mode, an air flue supporting strip 5 is arranged between every two layers of electromagnetic wires, the outer surface of the electromagnetic wire wrapped by the electromagnetic wire films is further wrapped by a layer of non-woven fabric 10, the outer surface of the electromagnetic wire wrapped by the non-woven fabric is further wrapped by a layer of F498 high-performance weather-resistant elastic glue, so that the non-, the lower conductive arm 7 is provided with an epoxy cushion block 6, the lower end of the epoxy cushion block 6 is provided with a clamping groove 9 clamped on the lower conductive arm 7, the thickness of the epoxy cushion block is equal to the encapsulation thickness of the electromagnetic wire, the width of the clamping groove opening is equal to the thickness of the conductive arm, the electromagnetic wire 4 is wound upwards from the upper end face of the epoxy cushion block 6 and is wound to the lower end face of the upper conductive arm 1, and a gap is formed between the electromagnetic wire 4 and the lower end face of the upper conductive arm 1 to form an end insulator 8. The air passage stay 5 is only provided with one air passage stay in the middle of the partition of the star-shaped conductive arm. The side surfaces of the upper and lower conductive arms are provided with threaded connection holes, a connection epoxy lath 3 with the same width as the air duct stay is arranged between the upper and lower conductive arms, and the upper and lower ends of the epoxy lath 3 are respectively fastened and connected with the upper and lower conductive arms by bolts 2. The F498 high-performance weather-resistant elastic glue is prepared from modified polyaspartic ester and modified isophorone diisocyanate according to the weight ratio of 100:80, the viscosity of the modified polyaspartic ester is 1200-1500 mpa.s, and the viscosity of the modified isophorone diisocyanate is 400-600 mpa.s.

The dry-type air-core reactor can be operated outdoors for more than 20 years; the high and low temperature resistant cold and hot circulation does not crack and can bear the temperature of-40 to 150 ℃; the waterproof and hydrophobic effects are good, and the waterproof effect can be well achieved; the curing time is short, the next procedure operation can be carried out after 6-8 hours, the curing can be completed within 7 days, the glass transition temperature is not less than 130 ℃, the tensile strength is not less than 10Mpa, and the elongation is not less than 180%. And the whole size is small, the weight is light, the structure is simple, the operation is convenient, the production efficiency is high, and the energy is saved and the consumption is reduced.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed with reference to the preferred embodiment, it is not limited to the present invention, and any skilled person in the art can make various changes or modifications equivalent to the above embodiments without departing from the scope of the present invention, but all the modifications, changes and modifications of the above embodiments by the technical spirit of the present invention are within the scope of the present invention.

Claims

1. The utility model provides a dry-type air-core reactor, includes upper and lower star conducting arm, twines multilayer electromagnetic wire between the upper and lower conducting arm, and the electromagnetic wire adopts three-layer film half-lap to wrap, is provided with air flue stay, its characterized in that between every layer of electromagnetic wire: the outside that the electromagnetism line film was wrapped around has the one deck non-woven fabrics again, and the electromagnetism line surface of the non-woven fabrics of again wrapping up passes through polyurea material parcel one deck again, makes non-woven fabrics and polyurea material form the fine and close protective layer of one deck, be provided with the cushion down on the electrically conductive arm, the lower extreme of cushion is provided with the draw-in groove card under on the electrically conductive arm, and the electromagnetism line begins the coiling upwards from the up end of cushion, winds the lower terminal surface of last electrically conductive arm up to, is provided with the clearance between the lower terminal surface of electromagnetism line and last electrically conductive arm and forms the.

2. A dry-type air-core reactor according to claim 1, characterized in that: the air passage stay is only provided with one air passage stay in the middle of the partition of the star-shaped conductive arm.

3. A dry-type air-core reactor according to claim 1, characterized in that: the side surfaces of the upper and lower conductive arms are provided with threaded connecting holes, a connecting lath with the same width as the air passage stay is arranged between the upper and lower conductive arms, and the upper and lower ends of the connecting lath are respectively fastened and connected with the upper and lower conductive arms by bolts.

4. A dry-type air-core reactor according to claim 1, characterized in that: the cushion block is made of epoxy resin materials.

5. A dry-type air-core reactor according to claim 3, characterized in that: the connecting lath is made of epoxy resin materials.