CN202630921U

CN202630921U - Gap verifying device for neutral point of transformer

Info

Publication number: CN202630921U
Application number: CN 201220257223
Authority: CN
Inventors: 江辉; 向明华
Original assignee: Panzhihua Electric Power Bureau Sichuan Electricpower Co ltd
Current assignee: Panzhihua Power Supply Co Of State Grid Sichuan Electric Power Corp; State Grid Corp of China SGCC
Priority date: 2012-06-01
Filing date: 2012-06-01
Publication date: 2012-12-26
Anticipated expiration: 2022-06-01

Abstract

The utility model relates to a gap verifying device for a neutral point of a transformer, which belongs to a device of measuring the gap size of the neutral point of the transformer by laser. Four support legs are installed below a bottom plate. A vertical gradienter and a transverse gradienter are placed on the bottom plate. A left bracket and a right bracket are fixedly arranged on the upper surface of the bottom plate. Guide rails with rectangular sections are rotatably installed on the left and right brackets through a left end shaft and a right end shaft, respectively. The guide rails are provided with scales. The top surfaces of the guide rails are parallel to the upper surface of the bottom plate. A compression screw is spirally connected to the left bracket and engaged with a thread on the left end shaft of the guide rail or compressed on the left end shaft of the guide rail. A first laser emitter is installed on the guide rail. A second laser emitter is installed on a slide block. The slide block is sleeved on the guide rail slidingly. According to the gap verifying device for the neutral point of the transformer provided by the utility model, the gap size can be measured and re-verified, and whether the gap size meets the configuration requirements or not can be known without contact with the transformer to the benefit of safe operation of the transformer.

Description

Device is checked in the transformer neutral point gap

Technical field

The utility model relates to two gap determinators between the face, particularly adopts the measurement mechanism of laser measurement transformer neutral point gap size.

Background technology

The transformer neutral point gap size is confirmed according to the transformer neutral point dielectric level.For operating transformer, safety explicitly calls for neutral point to be regarded as charging equipment.If the incomplete in-site measurement neutral point clearance distance that needs of source book then is difficult in direct measurement in service, generally can only combines main transformer to have a power failure and carry out.

The utility model content

The purpose of the utility model provides a kind of transformer neutral point gap of directly measuring that can be in operation and checks device.

This novel purpose is achieved in that a kind of transformer neutral point gap check device; Comprise first, second generating laser, four legs are installed under the base plate, putting on the base plate has vertical equity appearance and lateral level; Left and right support is fixed on plate upper surface; The cross section is that the guide rail of rectangle is installed in rotation on respectively on the left and right support through the left and right end axle on the guide rail, and guide rail is provided with scale, and the guide rail end face is parallel with plate upper surface; Clamping screw is screwed on the left socle, and the screw-threaded engagement on clamping screw and the guide rail left end shaft or clamping screw be crimped on guide rail left end shaft on; Said first generating laser is installed on the left part end face of guide rail, and said second generating laser is installed on the slide block end face, and slide block is linked on the guide rail slidably.

The structure of above-mentioned four legs is: base is welded on the plectane by the internal thread tube coupling and constitutes, and screw rod is screwed on the internal thread tube coupling of base.

The principle of work of the utility model is: adjust surveying instrument to horizontality through vertical, lateral level, adjustment instrumental azimuth and guide rail are restrainted laser until two of two generating lasers and are impinged upon simultaneously on the rod of neutral point gap; Turn clamping screw fixed guide, sliding slider is slided on the rod of neutral point gap by the laser beam that the generating laser that is fixed on the slide block is launched; When laser beam breaks away from the gap rod; Read measurer numerical value, once more along the equidirectional sliding slider, when laser beam impinges upon on the rod of gap once more; Reading numerical values once more; The principle of utilizing parallel four limit row opposite side to equate can get, and the difference of the number that reads for twice is the neutral point gap length, and satisfies power transformer neutral point device measuring error requirements.

Guide rail and neutral point gap copper rod that device is checked in the neutral point gap form two parallel lines, and the generating laser vertical fixing is on the guide rail end face, and the transmitter emitted laser is perpendicular to neutral point gap copper rod place straight line.Generating laser is the distance that laser is walked in the distance of sliding on the guide rail on the straight line of neutral point gap copper rod place, calculate laser in the neutral point gap during two copper rod end points the difference of gauge reading be neutral point clearance measurement value.

The beneficial effect of the utility model is:

1, novel, practical, solved the problem of transformer neutral point clearance measurement.

Therefore 2, this device can be in operation the transformer neutral point gap is measured, and need not contact any position of transformer, does not need transformer to have a power failure, and can measure at any time to check gap size and whether satisfy configuration requirement, helps the safe operation of transformer.

Description of drawings

Fig. 1 is this novel stereographic map.

Fig. 2 is the stereographic map of guide rail shown in Figure 1 and slide block.

Fig. 3, Fig. 4 are respectively Fig. 1 along clamping screw and along vertically (Y of stereographic map to) sectional view of second generating laser (laser head).

Fig. 5 is the sectional structure chart of a leg shown in Figure 1.

Embodiment

Fig. 1 illustrates; This novel first, second generating laser 7,10 that comprises, base plate is equipped with four legs 1 for 2 times, and putting on the base plate 2 has vertical equity appearance 4 and lateral level 5; Left and right support 3,3a are fixed on plate upper surface; The cross section is that the guide rail 8 of rectangle is installed in rotation on respectively on the left and right support through left and right end axle 8a, 8b on the guide rail, and guide rail is provided with scale, and the guide rail end face is parallel with plate upper surface; Clamping screw 6 is screwed on the left socle 3, and the screw-threaded engagement on clamping screw and guide rail 8 left end shaft or clamping screw be crimped on guide rail left end shaft on; Said first generating laser 7 is installed on the left part end face of guide rail 8, and said second generating laser 10 is installed on slide block 9 end faces, and slide block 9 is linked in (referring to Fig. 2, Fig. 3, Fig. 4) on the guide rail slidably.First generating laser (its laser head of Fig. 1 middle finger) is used to locate the gap rod, and second generating laser (its laser head of Fig. 1 middle finger) is used to locate gap rod and measurement clearance length.Left socle is formed by connecting column and horizontal columns, right support and left socle symmetry.Referring to Fig. 5, the structure of four legs 1 is: base is welded on the plectane by the internal thread tube coupling and constitutes, and screw rod 1a is screwed on the internal thread tube coupling of base 1b.Screw rod welded top or be screwed on the base plate bottom surface.During use, the height through screw rod on the adjustment leg and observe to judge vertically, the level meter of lateral arrangement, judge whether level of guide rail end face (parallel) to judge whether level of base plate, that is to say with plate upper surface.Unclamp clamping screw, can make guide rail rotate an orientation, the precession clamping screw can make guide rail be fixed on the orientation.Scale unit on the guide rail is mm.

Claims

1. device is checked in a transformer neutral point gap; Comprise that first, second generating laser (7,10) is characterized in that; Four legs (1) are installed under the base plate (2); Base plate (2) go up to be put has vertical equity appearance (4) and lateral level (5), and left and right support (3,3a) is fixed on plate upper surface, and the cross section is that the guide rail (8) of rectangle is installed in rotation on respectively on the left and right support through the left and right end axle (8a, 8b) on the guide rail; Guide rail is provided with scale, and the guide rail end face is parallel with plate upper surface; Clamping screw (6) is screwed on the left socle (3), and the screw-threaded engagement on clamping screw and guide rail (8) left end shaft or clamping screw be crimped on guide rail left end shaft on; Said first generating laser (7) is installed on the left part end face of guide rail (8), and said second generating laser (10) is installed on slide block (9) end face, and slide block (9) is linked on the guide rail slidably.

2. device is checked in transformer neutral point according to claim 1 gap, and it is characterized in that the structure of said four legs (1) is: base is welded on the plectane by the internal thread tube coupling and constitutes, and screw rod (1a) is screwed on the internal thread tube coupling of base (1b).