CN214312899U

CN214312899U - Air-core reactor for test

Info

Publication number: CN214312899U
Application number: CN202120419435.5U
Authority: CN
Inventors: 马遵勇
Original assignee: Shanghai Boliang Electric Appliance Manufacturing Co ltd
Current assignee: Shanghai Boliang Electric Appliance Manufacturing Co ltd
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2021-09-28
Anticipated expiration: 2031-02-25

Abstract

The application relates to an air reactor for testing, which comprises an insulating cylinder, insulating cloth abutted to the peripheral side of the insulating cylinder, a first insulating layer arranged on the peripheral side of the insulating cloth and a lead wound on the peripheral side of the first insulating layer; two ends of the insulating cloth extend out of two ends of the insulating cylinder respectively, and the insulating cloth and the conducting wire are in a mutually abutted relation; and an epoxy waterproof layer is arranged between the insulating cloth and the lead. The application improves the problem that rainwater influences the safe operation of the electric power system.

Description

Air-core reactor for test

Technical Field

The application relates to the field of reactors, in particular to an air-core reactor for tests.

Background

A reactor is an inductive high-voltage electrical apparatus used for limiting short-circuit current, reactive power compensation, and the like in an electric power system. A reactor, also called inductor, is essentially an inductive element that provides an inductive value on an electrical circuit. Compared with an iron core reactor, the iron core reactor is likely to have large current to cause iron core saturation to cause inductance value change, the inductance value of the air core reactor is only related to the external dimension, the number of turns and the connection mode, and under the condition that the parameters are not changed, the inductance value is a constant and is unrelated to the current which is conducted, so that the linearity of the air core reactor is good, and the air core reactor has wider application occasions.

The air reactor is operated under rated load, when the load current is larger in normal operation, the surface temperature of the air reactor rises, and when the air reactor meets rainfall weather, the surface temperature of the air reactor rapidly falls, and due to the effect of thermal expansion and cold contraction in a short time, the insulating layer of a lead wound on the surface of the air reactor is cracked, so that the safe operation of a power system is influenced.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem that rainwater influences the safe operation of electric power system, this application provides an air-core reactor for experiment.

The application provides an air-core reactor for experiment adopts following technical scheme:

an air reactor for test comprises an insulating cylinder, insulating cloth abutting against the periphery of the insulating cylinder, a first insulating layer arranged on the periphery of the insulating cloth, and a lead wound on the periphery of the first insulating layer; two ends of the insulating cloth extend out of two ends of the insulating cylinder respectively, and the insulating cloth and the conducting wire are in a mutually abutted relation; and an epoxy waterproof layer is arranged between the insulating cloth and the lead.

Through adopting above-mentioned technical scheme, when making this air reactor, with insulating cloth, first insulation layer and wire are installed in proper order in the week side of insulating cylinder, extend the both ends upset of insulating cylinder respectively afterwards with insulating cloth, the installer sets up the epoxy waterproof layer in the lateral wall of wire, and with insulating cloth butt in the lateral wall of wire, treat the epoxy waterproof layer solidification back, insulating cloth is with the wire cladding, the clearance between wire and the first insulation layer is also wrapped simultaneously, with this risk that reduces rainwater touching wire, thereby reduce the risk that expend with heat and contract with cold and make the risk of wire insulating layer fracture, and then improve the problem that the rainwater influences electric power system safe operation.

Optionally, one side of the wire, which is away from the first insulating layer, is provided with a second insulating layer abutting against the wire.

Through adopting above-mentioned technical scheme, the wire presss from both sides between first insulating layer and second insulating layer, and insulating cloth upset simultaneously covers the clearance between first insulating layer and the second insulating layer. On the one hand, the second insulating layer reduces the area of contact of wire and external environment to the difference in temperature transform that reduces external environment influences the phenomenon of wire insulating layer fracture, and on the other hand, the setting of second insulating layer equals to set up one inoxidizing coating more, even epoxy waterproof layer and insulating cloth are impaired, the second insulating layer also can completely cut off most ambient temperature still, thereby reduces the risk of wire insulating layer fracture, improves the security performance of this reactor.

Optionally, the first insulating layer includes a plurality of epoxy strips and glass filaments, and the epoxy strips are arranged around the insulating cylinder; the glass fiber is wound around the periphery of the insulating cylinder; the epoxy strips are positioned between the insulating cloth and the glass filaments.

Through adopting above-mentioned technical scheme, the setting of epoxy strip for leave the clearance between glass silk and the insulating cylinder, reduce area of contact between glass silk and the insulating cylinder, thereby reduce the temperature difference change of insulating cylinder and cause the phenomenon of glass silk fracture, improve the life on first insulating layer.

Optionally, waterproof insulating paper is attached to both the side of the first insulating layer facing the wire and the side of the second insulating layer facing away from the wire.

Through adopting above-mentioned technical scheme, on the one hand, reduce the phenomenon that the second insulating layer is passed through to the rainwater to reduce the risk that the wire ftractures because of expend with heat and contract with cold, on the other hand, at first insulating layer and the impaired back of second insulating layer, waterproof insulating paper can also play insulating effect, with this security performance who improves this reactor.

Optionally, a cured layer is filled in a gap between the two ends of the insulation cylinder and the insulation cloth.

Through adopting above-mentioned technical scheme, reduce the risk that the rainwater permeates to between insulating cloth and the insulating cylinder to reduce the inside flow of rainwater infiltration this reactor, and then improve the security performance of this reactor.

Optionally, a fixing frame for supporting the insulating cylinder is fixed at two ends of the insulating cylinder, and a contact piece is fixed on the side wall of one end of the fixing frame far away from the center of the insulating cylinder.

Through adopting above-mentioned technical scheme, when placing this reactor in ground, make this reactor lift off ground through butt piece and solid underframe, reduce the risk of wire and ground contact, reduce the risk that surface ponding lasts to soak epoxy waterproof layer simultaneously, improve epoxy waterproof layer's life.

Optionally, a reinforcing rib is fixed between the abutting sheet and the fixing frame.

Through adopting above-mentioned technical scheme, improve the stability of being connected between butt piece and the mount.

Optionally, one side of the insulating cloth, which faces away from the lead, is wound with a waterproof cloth strip.

Through adopting above-mentioned technical scheme, cover the insulating cloth in the clearance of wire week side on the one hand, the warpage of restriction insulating cloth improves the bonding fastness of insulating cloth and wire, and on the other hand reduces the rainwater and adheres to the week side of insulating cloth to reduce the rainwater and permeate to the clearance between insulating cloth and the wire, and then improve the security performance of this reactor.

In summary, the present application includes at least one of the following beneficial technical effects:

1. after the epoxy waterproof layer is cured, the insulating cloth coats the lead, and meanwhile, the gap between the lead and the first insulating layer is also coated, so that the risk that rainwater touches the lead is reduced, the risk that the insulating layer of the lead is cracked due to expansion with heat and contraction with cold is reduced, and the problem that rainwater influences the safe operation of a power system is solved;

2. through the curing layer, the risk that rainwater penetrates between the insulating cloth and the insulating cylinder is reduced, so that the flow rate of rainwater penetrating into the reactor is reduced, and the safety performance of the reactor is improved;

3. through butt joint piece and solid underframe, make this reactor lift off ground, reduce the risk of wire and ground contact, reduce surface ponding simultaneously and continuously soak the risk of epoxy waterproof layer, improve epoxy waterproof layer's life.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a schematic view of the internal structure of the embodiment of the present application.

Fig. 3 is an enlarged view of fig. 2 at a.

Description of reference numerals: 1. an insulating cylinder; 2. insulating cloth; 3. a first insulating layer; 31. epoxy strips; 32. glass fiber; 4. a wire; 5. a second insulating layer; 6. a fixed mount; 7. abutting the sheet; 8. reinforcing ribs; 9. waterproof insulating paper; 10. waterproof cloth strips; 11. and curing the layer.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses air-core reactor for test. Referring to fig. 1 and 2, an air-core reactor for testing includes an insulating cylinder 1, an insulating cloth 2 abutting on the periphery of the insulating cylinder 1, a first insulating layer 3 abutting on the periphery of the insulating cloth 2, a wire 4 wound around the periphery of the first insulating layer 3, and a second insulating layer 5 abutting on the periphery of the wire 4, and the insulating cylinder 1 is a hollow cylindrical cylinder. The insulating cloth 2 can be glass fiber cloth, two ends of the insulating cloth 2 respectively extend out of two ends of the insulating cylinder 1, and the insulating cloth 2 and the conducting wire 4 are mutually abutted.

Referring to fig. 2, fixing frames 6 for supporting the insulation tube 1 are fixed to both ends of the insulation tube 1. The lateral wall that 1 center one end of insulating cylinder was kept away from to mount 6 is fixed with butt 7 in ground, is fixed with strengthening rib 8 between butt 7 and the mount 6 to reduce the risk of relative deflection between butt 7 and the mount 6, improve butt 7 and mount 6's stability of being connected. When the reactor is placed on the ground, the reactor is lifted off the ground through the abutting sheet 7 and the fixed bottom frame, the risk that the lead 4 is in contact with the ground is reduced, and meanwhile the risk that the lead 4 is continuously soaked by surface water is reduced.

Referring to fig. 2, the first insulating layer 3 includes a plurality of epoxy strips 31 and a glass fiber 32, the plurality of epoxy strips 31 are disposed around the insulating cylinder 1 with the axis of the insulating cylinder 1, and the glass fiber 32 is disposed around the insulating cylinder 1 to wind the plurality of epoxy strips 31 around the insulating cylinder 1. And waterproof insulating paper 9 is adhered to one side of the glass fiber 32, which is far away from the epoxy strip 31, and one side of the lead 4, which is far away from the glass fiber 32, and the waterproof insulating paper 9 can be DMD insulating paper.

Referring to fig. 3, the structure of the second insulating layer 5 is the same as that of the first insulating layer 3, and the epoxy strips 31 of the second insulating layer 5 abut against the peripheral side of the wires 4, so that the wires 4 are clamped between the first insulating layer 3 and the second insulating layer 5. It should be noted that, the number of layers of the first insulating layer 3 and the second insulating layer 5 on the circumferential side of the insulating cylinder 1 may be one or two, and the protective performance of the first insulating layer 3 and the second insulating layer 5 on the wire 4 is improved along with the increase of the number of layers.

Referring to fig. 3, the side of the glass fiber 32 of the second insulating layer 5 facing away from the wire 4 is also adhered with a waterproof insulating paper 9, and the side of the waterproof insulating paper 9 facing away from the second insulating layer 5 is coated with an epoxy waterproof layer, which may be epoxy paint. After the epoxy waterproof layer is coated, the insulating cloth 2 extending out of the two ends of the insulating cylinder 1 is turned over, the insulating cloth 2 is abutted to the side wall of the second insulating layer 5, and after the epoxy waterproof layer is cured, the insulating cloth 2 covers the gap between the first insulating layer 3, the wire 4 and the second insulating layer 5, so that the risk that rainwater touches the wire 4 is reduced.

Referring to fig. 2, the waterproof cloth strips 10 are wound around the periphery of the second insulating layer 5, so that the insulating cloth 2 covers the gap around the second insulating layer 5, the warping of the insulating cloth 2 is limited, the bonding firmness between the insulating cloth 2 and the second insulating layer 5 is improved, the surface smoothness of the reactor is increased, rainwater is prevented from adhering to the periphery of the insulating cloth 2, and the rainwater is prevented from penetrating into the gap between the insulating cloth 2 and the second insulating layer 5.

Referring to fig. 3, the gap between the two ends of the insulation tube 1 and the insulation cloth 2 is filled with a cured layer 11, and the cured layer 11 may be prepared by epoxy resin and silica powder to increase the toughness and mechanical strength of the epoxy resin. After the waterproof cloth strip 10 is wound to the peripheral side of the second insulating layer 5, cured layers 11 are poured to two ends of the insulating cylinder 1 so as to seal gaps between the insulating cloth 2 and the insulating cylinder 1, between the ends of the wires 4 and the waterproof cloth strip 10, and rainwater is prevented from entering the reactor.

The implementation principle of the air-core reactor for the test in the embodiment of the application is as follows: in manufacturing the air-core reactor, the insulating cloth 2 is first attached to the periphery of the insulating cylinder 1, and then the first insulating layer 3 and the waterproof insulating paper 9 are sequentially attached. After the waterproof insulating paper 9 is firmly bonded, the wire 4 is wound around the periphery of the waterproof insulating paper 9. After the wire 4 is wound, a layer of waterproof insulating paper 9 is bonded on one side of the wire 4, which is far away from the first insulating layer 3, and then the second insulating layer is mounted on the peripheral side of the insulating cylinder 1, so that the wire 4 is clamped between the first insulating layer 3 and the second insulating layer 5, and a layer of waterproof insulating paper 9 is also bonded on one side of the second insulating layer 5, which is far away from the wire 4.

Then installer coats the epoxy waterproof layer in the one side that waterproof insulation paper 9 deviates from second insulating layer 5, again with insulating cloth 2 respectively extend the both ends upset of insulating cylinder 1, after the insulating cloth 2 upset that will extend insulating cylinder 1 both ends to the week side of second insulating layer 5, twine waterproof cloth strip 10 in week side of second insulating layer 5 again, pour solidified layer 11 to the both ends of insulating cylinder 1 at last, with insulating cloth 2 and insulating cylinder 1, the clearance between 4 ends of wire and the waterproof cloth strip 10 seals admittedly. So far, treat the epoxy waterproof layer and the solidification back of layer 11, insulating cloth 2 is with wire 4 cladding, and the clearance between wire 4, first insulating layer 3 and the second insulating layer 5 is also filled simultaneously to this reduces the risk that the rainwater touched wire 4, thereby reduces expend with heat and contract with cold and make the risk of wire 4 insulating layer fracture.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An air-core reactor for testing, its characterized in that: comprises an insulating cylinder (1), insulating cloth (2) which is abutted against the peripheral side of the insulating cylinder (1), a first insulating layer (3) which is arranged on the peripheral side of the insulating cloth (2) and a lead (4) which is wound on the peripheral side of the first insulating layer (3); two ends of the insulating cloth (2) respectively extend out of two ends of the insulating cylinder (1), and the insulating cloth (2) and the conducting wire (4) are mutually abutted; an epoxy waterproof layer is arranged between the insulating cloth (2) and the lead (4).

2. An air-core reactor for testing according to claim 1, characterized in that: and a second insulating layer (5) abutted against the wire (4) is arranged on one side of the wire (4) far away from the first insulating layer (3).

3. An air-core reactor for testing according to claim 1 or 2, characterized in that: the first insulating layer (3) comprises a plurality of epoxy strips (31) and glass fibers (32), and the epoxy strips (31) are arranged around the periphery of the insulating cylinder (1); the glass fiber (32) is wound around the periphery of the insulating cylinder (1); the epoxy strip (31) is positioned between the insulating cloth (2) and the glass fiber (32).

4. An air-core reactor for testing according to claim 2, characterized in that: one side of the first insulating layer (3) facing the wire (4) and one side of the second insulating layer (5) departing from the wire (4) are both attached with waterproof insulating paper (9).

5. An air-core reactor for testing according to claim 1, characterized in that: and cured layers (11) are filled in gaps between the two ends of the insulating cylinder (1) and the insulating cloth (2).

6. An air-core reactor for testing according to claim 1, characterized in that: the both ends of insulating cylinder (1) are fixed with mount (6) that are used for supporting insulating cylinder (1), the lateral wall that insulating cylinder (1) center one end was kept away from in mount (6) is fixed with butt piece (7).

7. An air-core reactor for testing according to claim 6, characterized in that: and a reinforcing rib (8) is fixed between the abutting sheet (7) and the fixing frame (6).

8. An air-core reactor for testing according to claim 1, characterized in that: and one side of the insulating cloth (2) departing from the lead (4) is wound with a waterproof cloth strip (10).