CN105089169A - Generator neutral wall shielding plate structure - Google Patents

Abstract

The invention relates to the field of generator magnetic field shielding structures, in particular to a generator neutral point wall shielding plate structure, which is fixed on the surface of the wall, including channel steel, iron plate, insulating plate, aluminum plate, and the channel steel passes through expansion bolts Fixed on the surface of the wall; the iron plate and the channel steel are fixed by welding; a number of nuts are welded on the inner side of the iron plate and close to the wall, and screw holes are opened at the corresponding positions; the aluminum plate is passed through a number of bolts Cooperate with the nuts on the iron plate to fix the two. An insulating plate is arranged between the bolt fixing place and the aluminum plate and the iron plate. The insulating plate is long and strip-shaped; the invention can effectively shield the strong current during the operation of the generator The generated magnetic field will damage the steel structure in the wall of the machine room, further avoiding potential safety hazards.

Description

A generator neutral point wall shielding plate structure

technical field

The invention relates to the field of generator magnetic field shielding structures, and specifically discloses a generator neutral point wall shielding plate structure.

Background technique

The neutral point terminal of the generator is close to the wall of the generator. Due to the large patrol current of the generator, the electromagnetic field generated will generate a lot of heat to the steel structure in the wall, which will cause the wall to soften and loosen due to long-term heating. bring certain security risks.

Contents of the invention

The purpose of the present invention is to provide a generator neutral point wall shielding plate structure that can effectively shield the damage to the steel structure in the machine room wall by the magnetic field generated by the strong current during the operation of the generator to solve the above problems.

The technical scheme adopted in the present invention is as follows:

Generator neutral point wall shielding plate structure, which is fixed on the wall surface, including channel steel, iron plate, insulation plate, aluminum plate, the channel steel is fixed on the wall surface by expansion bolts; the iron plate and the groove The steel is fixed by welding; a number of nuts are welded on the inner side of the iron plate close to the wall, and screw holes are opened at the corresponding positions; the aluminum plate is fixed by a number of bolts and nuts on the iron plate. An insulating plate is arranged between the bolt fixing place, the aluminum plate and the iron plate, and the insulating plate is elongated.

Further, the position of the channel steel is the edge of the iron plate.

Further, the iron plate and the aluminum plate are fixed by bolts, and T-bolt insulating sheaths are provided at the bolts.

Further, the shielding plate has a length of 2000 mm and a width of 750 mm.

To sum up, due to the adoption of the above technical solution, the beneficial effect of the present invention is that the wall shielding plate structure is installed on the generator wall close to the neutral point terminal of the generator, which can effectively avoid the damage caused by the large patrol current of the generator. The magnetic field softens the heating and softening of the steel bars inside the wall, thus preventing the occurrence of potential safety hazards in power plants.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is an enlarged schematic diagram of I in Fig. 1 .

Marks in the figure: 1. Wall; 2. Channel steel; 3. Iron plate; 4. Insulation plate; 5. Aluminum plate; 6. T-bolt insulation sheath.

Detailed ways

Below in conjunction with accompanying drawing, the present invention is described in detail.

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

As shown in Figures 1-2, the shielding plate structure of the neutral point wall of the generator is fixed on the surface of the wall body 1, including channel steel 2, iron plate 3, insulating plate 4, and aluminum plate 5, and the channel steel 2 is passed through expansion bolts. Fixed on the surface of the wall 1; the iron plate 3 and the channel steel 2 are fixed by welding, and the position of the channel steel 2 is the edge of the iron plate 3, so as to facilitate on-site welding; on the inside of the iron plate 3 1. There are several nuts welded on one side close to the wall body 1, which are regularly arranged horizontally and vertically, and screw holes are provided at the corresponding positions. Before the iron plate 3 and the channel steel 2 are welded and fixed, the nuts are welded and fixed on the iron plate 3 in advance; the aluminum plate 5 Fix the two by cooperating with several bolts and nuts on the iron plate 3. T-bolt insulating sheaths 6 are arranged at the bolts to adjust the stress of thermal expansion; An insulating board 4 is arranged between them, and the insulating board 4 is elongated and arranged in parallel in the transverse direction; the length of the shielding board is 2000mm, and the width is 750mm, and it is spliced and welded as a whole during on-site installation.

When in use, avoid the mounting bolts at the nearest point of the neutral point conductor of the generator, and at the same time ensure that the safe distance from the shielding plate to the conductor is not less than 220mm.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (4)

1. generator neutral point wall barricade structure, it is fixed on surface of wall, it is characterized in that: comprise channel-section steel, iron plate, insulating slab, aluminium sheet, and described channel-section steel is fixed on surface of wall by expansion bolt; Described iron plate and described channel-section steel are by being welded and fixed; In the inner side of described iron plate, the one side of pressing close to body of wall is welded with some nuts, and relevant position offers screw; Described aluminium sheet to be coordinated with described iron plate top nut by some bolts to be fixed both, this bolt bearing, is provided with insulating slab between described aluminium sheet and iron plate, this insulating slab growth bar shaped.

2. generator neutral point wall barricade structure according to claim 1, is characterized in that: the position of described channel-section steel is the edge of iron plate.

3. generator neutral point wall barricade structure according to claim 1, it is characterized in that: be bolted between described iron plate and described aluminium sheet, this bolt place is provided with T-shaped bolt insulation sleeve.

4. generator neutral point wall barricade structure according to claim 1, is characterized in that: described barricade plate width length is 2000mm, and width is 750mm.