CN2517086Y

CN2517086Y - Gas insulation dry-type iron-core reactor

Info

Publication number: CN2517086Y
Application number: CN 02205153
Authority: CN
Inventors: 刘有斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-02-21
Filing date: 2002-02-21
Publication date: 2002-10-16
Anticipated expiration: 2012-02-21

Abstract

Reactors in electrical networks are mainly used in reactive compensation, and dry reactors are widely used because the dry reactors have no oil and are free from leakage. The utility model adopts a gas insulation dry reactor with an iron core, which comprises a reactor iron core and a reactor winding which are assembled in a box body, a radiator arranged outside the box body and a heat exchanger among the box body, the reactor iron core and the reactor winding, wherein one side of the heat exchanger is tightly connected with the box body and the radiator, and the other side of the heat exchanger is tightly connected with the reactor iron core and the reactor winding. The utility model solves the heat radiation problem of the reactor reliably, so the reactor can have smaller volume and lower cost. The utility model is an ideal replacing product for the present reactors with iron cores.

Description

Gas insulating reactor with T-shaped core

Affiliated technical field

The utility model is a kind of novel electric equipment that is used for reactive power compensation in the electrical network.

Background technology

The application of iron core reactor is very widely in the electric power system, and its main purposes is as the series reactor in the reactive power compensation, is used for current limliting and filtering, also is used for shunt reactor.In the prior art, reactor is divided into oil immersion and dry type two big classes, and liquid immersed reactor brings a lot of problems because there is transformer oil will have problems such as leakage, deterioration of oil to operation and maintenance, has not become application trend of electric power system so there is oiling.Dry reactor is divided into two kinds of cored reactor and no iron core reactors again, iron core reactor because do not have the high-intensity magnetic field interference and cost lower and obtain reasonable application.Existing reactor with T-shaped core is to adopt the epoxy casting mode basically, or other insulating material are fixed-type, because heat dissipation problem (does not have oil to dispel the heat as medium, the heat dispersion of air is relatively poor) volume of comparing winding with liquid immersed reactor wants big, cost is just much higher, and the heat radiation when big capacity is one and is difficult to the problem that solves, limited it to jumbo development, heat dissipation problem is the problem that will face during reactor manufactures and designs always in fact, also is the problem that never obtains fine solution.

The iron core of iron core reactor and winding are to produce heat, and heat looses and do not go out, and will produce the temperature rise that oversteps the extreme limit, and reactor is burnt.In traditional iron core reactor design, be to have designed air channel or oil duct in iron core and the winding, the air channel is a ventilation usefulness in the reactor with T-shaped core, oil duct is the oil circuit that increases in the oil immersion iron core reactor, promptly all be to adopt the mode of convection current that the heat transferred in the iron core reactor is gone out, reactor with T-shaped core adopts cross-ventilated mode, because of the heat transfer property difference of air a little, so need more bigger air channels, and the current density of winding is also selected lowlyer, these have all increased cost, than the iron core reactor cost height with the oil immersion of capacity; The oil immersion iron core reactor adopts transformer oil to come convection current, the heat in iron core and the winding is taken on the casing, and by the heat sink radiates on the casing in air because the heat transfer efficiency of transformer oil is high, the cost of its iron core and winding is also relative to be hanged down.In a word, it all is the mode that adopts traditional convection current that the heat of existing iron core reactor iron core and winding is derived, and convection current is the mode that a kind of heat conductivility will differ from relatively, can adopt a kind of better heat-conducting mode, can have greatly improved on performance and cost.

Summary of the invention

The purpose of this utility model provides a kind of novel gas insulating reactor with T-shaped core, when making iron core reactor reach fire-proof and explosion-proof, adopts this better heat-conducting mode of heat pipe again, makes the decline that raises the cost of the performance of iron core reactor.

The said gas insulating reactor with T-shaped core of the utility model, the iron core and the winding that comprise the iron core reactor in the casing, gassy in the casing, casing is equipped with radiator outward, between casing and iron core reactor iron core and the winding heat exchanger is arranged, heat exchanger closely is connected with casing and radiator on one side, and another side closely is connected with winding with the iron core of iron core reactor.

Casing is the structure of closed, insulation gas filled in the casing, comprise sulphur hexafluoride, nitrogen, dry air etc., slight pressure in the casing is higher than outside the casing, thereby guarantee reasonable insulation property, because casing is airtight, can all uses indoor and outdoor, and can avoid common reactor with T-shaped core because of the aging Insulation Problems of breaking and causing of epoxy.

Heat exchanger between casing and the iron core reactor winding is a heat pipe, heat pipe is known one of the most effective heat transfer element, it can transmit a large amount of heats at a distance by its very little sectional area and need not additionaling power, and its thermal conductivity is considerably beyond any known metal.Heat pipe is airtight structure, the certain vacuum degree of inner maintenance, and be filled with certain liquid, and an end heated liquid can be vaporized in the pipe, becomes liquid again to other end cooling back gas, moves in circles, and the heat pipe two ends are almost not have the temperature difference.The Heat Transfer of Heat Pipe on Heat Pipe ability is surprising, its limit of the heat pipe of 4 millimeters internal diameters is transmitted energy can be above 5 kilowatts, heat on the winding can be delivered on casing and the radiator very soon, iron core and winding just no longer need the air channel, the current density of winding also can be selected bigger, the volume of iron core and winding can reduce a lot, thereby can reduce cost greatly.Temperature on temperature on iron core and the winding and the casing radiator is roughly the same, this also can reduce the temperature rise of iron core reactor greatly, overcome the higher and a series of problems brought of iron core reactor temperature rise, the class of insulation of the required insulating material of iron core reactor also can reduce, and also can reduce the loss of iron core reactor when this reduces cost.

Its evaporation section of common heat pipe and condensation segment are that no compartment of terrain links together substantially, be independent structures one by one, be used in the gas insulating reactor with T-shaped core, bring certain difficulty can for the coiling of winding, adopt evaporation section and the separated separate heat pipe of condensation segment, just can address this problem better.

The general selected material of thermotube wall is a metal material, good heat conductivity, but be used in the iron core reactor, because the insulation property of metal material are poor, though solved the heat conduction problem, but brought Insulation Problems, so the tube wall of separate heat pipe evaporation section is preferably the insulating material of heat conduction, not only heat conduction but also insulate, the thermal conductivity of this material should be greater than 1W/mK.

The utility model is compared with existing technology, because heat transfer efficiency improves, can reduce the volume and the cost of iron core reactor significantly, and the temperature rise that has reduced iron core reactor has reduced the loss of iron core reactor simultaneously; Adopt the closed gas-insulated structure, can improve insulation property and reliability.

The utility model is a no oiling structure, with low cost and have distinguishing features such as reducing temperature rise and loss.

Description of drawings

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

Accompanying drawing 1 is a side-looking structural representation of the present utility model

Accompanying drawing 2 is a plan structure schematic diagram of the present utility model

Embodiment

In Fig. 1,2, the 1st, iron core, the 2nd, to the evaporation section of the separate type heat pipe exchanger of iron core heat radiation, the 3rd, to the evaporation section of the separate type heat pipe exchanger of winding heat radiation, the 4th, the winding of iron core reactor, 5, the 6th, the pipe of connection evaporation section and condensation segment, the 5th, the pipe that steam passes through, the 6th, the pipe that condensed fluid returns, the 7th, the condensation segment of separate type heat pipe exchanger, the 8th, casing, the 9th, to the radiator of air heat radiation.Evaporation section 2 inwalls of separate type heat pipe exchanger closely contact with iron core 1, and the heat transferred of iron core 1 is gone out; Evaporation section 3 outer walls of separate type heat pipe exchanger closely contact with winding 4, and the heat transferred of winding 4 is gone out; To keep certain insulation distance between the evaporation section 2 of separate type heat pipe exchanger and the evaporation section 3 of separate type heat pipe exchanger.The condensation segment 7 of separate type heat pipe exchanger closely contacts with casing 8, and the outer correspondence position of casing is installed radiator 9, with all heat transferred of inside in air.The material of separate heat pipe evaporation section tube wall is chosen as the insulating material of heat conduction, guarantees thermal conductivity and insulating properties simultaneously.The condensation segment that connects separate type heat pipe exchanger is what separate with the

pipe

5,6 of evaporation section in initial designs, and is just that it is airtight after winding installs, and injects liquid then and vacuumizes.Casing is airtight at last, also need vacuumize the back and inject other insulating gass, as sulphur hexafluoride, nitrogen etc.

Claims

1, a kind of gas insulating reactor with T-shaped core, comprise reactor winding and iron core in the casing, be full of insulating gas in the casing, casing is equipped with radiator outward, it is characterized in that: between described casing and reactor winding and the iron core heat exchanger is arranged, heat exchanger closely is connected with casing and radiator on one side, and another side closely is connected with iron core with the reactor winding.

2, gas insulating reactor with T-shaped core according to claim 1 is characterized in that: described casing is airtight structure, and the inside is full of insulating gas.

3, according to claim 1,2 described gas insulating reactor with T-shaped core, it is characterized in that: described heat exchanger is a heat pipe.

4, gas insulating reactor with T-shaped core according to claim 3 is characterized in that: all or part of material therefor of the tube wall of described heat pipe evaporator section is a heat-conducting insulation material, and the thermal conductivity of this material is greater than 1W/mK.

5, gas insulating reactor with T-shaped core according to claim 3 is characterized in that: described heat pipe is evaporation section and the separated separate heat pipe of condensation segment.

6, gas insulating reactor with T-shaped core according to claim 4 is characterized in that: described heat pipe is evaporation section and the separated separate heat pipe of condensation segment.