KR20160117781A

KR20160117781A - Shunt reactor core fixing device

Info

Publication number: KR20160117781A
Application number: KR1020150045180A
Authority: KR
Inventors: 이찬식
Original assignee: 현대중공업 주식회사
Priority date: 2015-03-31
Filing date: 2015-03-31
Publication date: 2016-10-11
Also published as: KR102018867B1

Abstract

The present invention relates to a transformer reactor outer core fixing device. More particularly, disclosed is a transformer reactor outer core fixing device which uniformly pressures an iron core to reduce a noise. The transformer reactor outer core fixing device according to the present invention includes a frame having a rectangular parallelepiped lattice shape; a pair of main bridges formed in the upper part of the frame; an auxiliary bridge which is connected to the outside of the main bridge and increases an upper pressing area; and a pair of bases which are formed in the lower part of the frame, is combined with the main bridge, and pressurizes the upper and lower parts of the frame.

Description

{SHUNT REACTOR CORE FIXING DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transformer reactor outer core fixing apparatus, and more particularly, to a transformer reactor outer core fixing apparatus capable of uniformly pressing an iron core to reduce noise.

First, let's look at transformer reactors.

The induction reactor is intended to limit the current value of the electric circuit or to alleviate the current change by utilizing the fact that the change of the current flowing in the coiled coiled wire is disturbed by the electromagnetic induction action.

The rating of the induction reactor is determined by the frequency, the capacity, the rated voltage, the current, the constant and the operating time, depending on the intended use.

In addition, a nonlinear reactor using the saturation characteristic of the iron core positively is also used depending on the purpose.

Current limiting reactor It is used to limit the fixed current due to short-circuit failure. It is intended to prevent the mechanical and thermal obstacles of the equipment by short-circuit current and to reduce the required breaking capacity of the circuit-breaker.

The structure is generally an air-core type of invariant inductance. In general, it is a dry type at 20 kV or less, and an inflow structure at 30 kV or more.

Where the current-limiting reactors are mainly used, it is not possible to suppress the short-circuit current sufficiently only by the reactance of the subcircuits to divide the bus line to limit the short-circuit fault current in the substation or to transform the subcircuit connected to the large capacity bus. Or when they are connected in series and used.

Shunt reactor This is to supply the leakage current which cancels the charging current of the transmission line. It is installed in the power plant or substation.

Shunt reactors play an important role in increasing the transmission capacity while keeping the voltage of the grid at each point of the grid within the tolerance.

Generally, it is composed of 3 phases and is connected to the bus line of the substation through switchgear. Depending on the situation, the operation capacity is controlled by the switchgear.

There are many other reactors used in the magnet system, depending on the purpose, such as an electric furnace voltage fryer-preventing reactor, a blocking coil for carrying a power line, and a direct-current reactor for suppressing a high frequency in a power storage battery.

Related prior arts are Korean Public Utility Model Publication No. 1998-067625 'Reactor Parket laminating jig'.

SUMMARY OF THE INVENTION An object of the present invention is to provide a transformer reactor outer core fixing device capable of effectively reducing the noise by reducing surface pressure.

Another object of the present invention is to provide a transformer reactor outer core fixing device capable of reducing the cost by improving the pushing structure of the upper bridge and the lower base.

The transformer reactor outer core fixing apparatus according to the present invention comprises: a frame having a rectangular parallelepiped shape; A pair of main bridges formed on the frame; An auxiliary bridge connected to an outer side of the main bridge to increase an upper pressing area; And a pair of bases formed at a lower portion of the frame and fastened to the main bridge to press up and down the frame.

The main bridge and the auxiliary bridge may be connected to each other by an H beam, and may further include an auxiliary press plate connected to the inside of the main bridge.

Preferably, the frame has a fastening bar for fastening the four corners in the vertical direction.

The distance between the pair of main bridges may be smaller than the distance between the main bridges and the outside of the frame so that a uniform surface pressure can be transmitted.

Further, it is more preferable that the frame has a reinforcing member for reinforcing the strength of the lower edge.

According to the present invention, the base and the auxiliary base, which are the parquet pushers of the transformer reactor outer iron core fixing device, efficiently transmit the surface pressure, thereby reducing the noise.

Further, the transformer reactor outer iron core fixing device according to the present invention improves the pressing structure of the upper bridge and the lower base, which is designed to reduce the cost.

1 shows a general transformer reactor outer core fixing device,
FIG. 2 is a perspective view illustrating a transformer reactor outer core fixing apparatus according to an embodiment of the present invention. FIG.
3 is an enlarged perspective view of an upper part of a transformer reactor outer core fixing apparatus according to an embodiment of the present invention.
4 is a front view of the transformer reactor outer iron core fixing device according to the embodiment of the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or preliminary meaning and the inventor shall properly define the concept of the term in order to describe its invention in the best possible way It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention. It should be noted that the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention, It should be understood that various equivalents and modifications are possible.

1 is a view showing a conventional transformer reactor outer core fixing apparatus.

As shown, a typical transformer reactor outer core fixture includes a lattice-shaped frame 10, a bridge 20 disposed equidistantly on top of the frame, and a bridge 20 connected to the bridge 20 at the bottom of the frame. And a base 30.

However, in this conventional structure, since the bridge 20 and the base 30 are arranged at equal intervals, an appropriate pressing pressure is applied to the center portion, and an excessive pressing pressure is applied to the both side portions.

In addition, there is a problem in that the cost is unnecessarily high due to the structure in which both sides are excessively pressed.

FIG. 2 is a perspective view showing a transformer reactor outer core fixing apparatus according to an embodiment of the present invention. FIG.

As shown, the transformer reactor outer core fixing apparatus according to the embodiment of the present invention includes a frame 110 having a rectangular parallelepiped lattice shape, a pair of main bridges 120 formed on the frame 110, An auxiliary bridge 130 connected to an outer side of the main bridge 120 to increase an upper pressing area of the main bridge 120 and an auxiliary bridge 130 formed at a lower portion of the frame 110 and coupled with the main bridge 120, And a pair of bases 140 for pressing.

The present invention provides a transformer reactor outer iron core fixing device that improves the problems of the prior art in which an excessive pressing structure is applied to both sides of the transformer reactor, thereby allowing a uniform surface pressure to be transmitted to the upper part thereof, .

The conventional transformer reactor outer core fixing device has a structure of pressing using the four main bridges 120 and the base 140 compared to the structure in which the outer core fixing device of the transformer reactor is pressed by using four bridges and bases.

The main bridge 120 and the base 140 are connected to each other by a tie rod 145 and a spring to provide a pressing force in a vertical direction. To reduce costs.

Meanwhile, in order to compensate for the lack of the pressing force due to the decrease of the installation position of the main bridge 120, the auxiliary bridge 130 is connected to the main bridge 120 to increase the pressing area, have.

3 is an enlarged perspective view of an upper portion of a transformer reactor outer core fixing apparatus according to an embodiment of the present invention.

The main bridge 120 coupled with the base 140 and the tie rod 145 and providing the pressing force is connected to the auxiliary bridge 130 by the H beam 125. As shown in FIG.

The pressing force of the main bridge 120 is transmitted to the H beam 125 and the auxiliary bridge 130 so that the H beam 125 and the auxiliary bridge 130 press the upper surface of the pocket.

The auxiliary bridge 130 is connected to the outside of the main bridge 130 and the auxiliary presser plate 122 is connected to the inside of the main bridge 120, The area can be further enlarged.

Since the pressing pressure is generated by the tie rod 145, the pressing pressure applied from the main bridge 120 directly connected to the tie rod 145 is transmitted to the auxiliary bridge 130 connected to the main bridge 120 ) Is greater than the pushing pressure applied from the furnace.

Therefore, it is preferable that the interval between the main bridges 120 is narrower than the interval between the main bridge 120 and the outside of the frame 110 so that a more uniform pressure is applied to the upper portion.

4 is a front view of a transformer reactor outer core fixing apparatus according to an embodiment of the present invention.

As shown in the figure, it is preferable that a fastening rod 112 is provided at four corners of the frame 110 in the up and down direction. This is intended to compensate for the decrease in the number of tie rods installed by reinforcing the structural strength of the frame 110 in the vertical direction.

It is further preferable that the reinforcing member 114 reinforces the strength of the bottom edge of the frame 110 so as to structurally reinforce the warpage strength of the bottom edge.

As described above, the transformer re-outer steel core fixing apparatus according to the present invention reduces the number of tie rods to be fastened by the tie rods, and by applying a structure in which the auxiliary bridge 130 is connected to the main bridge 120, Thereby providing a more uniform pressing pressure as a whole and reducing the cost.

It is to be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, and the scope of the present invention will be indicated by the appended claims rather than by the foregoing detailed description. It is intended that all changes and modifications that come within the meaning and range of equivalency of the claims, as well as any equivalents thereof, be within the scope of the present invention.

110: frame
112:
120: Main Bridge
122: Auxiliary presser plate
125: H beam
130: auxiliary bridge
140: Base
145: tie rods

Claims

A frame having a rectangular parallelepiped shape;
A pair of main bridges formed on the frame;
An auxiliary bridge connected to an outer side of the main bridge to increase an upper pressing area; And
And a pair of bases formed at a lower portion of the frame and coupled to the main bridge to press up and down the frame.

The method according to claim 1,
The main bridge and the auxiliary bridge are connected by an H beam,
Further comprising an auxiliary press plate connected to the inside of the main bridge.

The method according to claim 1,
The frame
And a fastening rod for fastening the four corners in the vertical direction.

The method according to claim 1,
Wherein an interval between the pair of main bridges is formed to be narrower than an interval between the main bridge and an outer side of the frame.

The method according to claim 1,
Characterized in that the frame comprises a stiffener reinforcing the strength of the lower edge.