CN219064385U

CN219064385U - Generator stator and rotor clearance measuring tool

Info

Publication number: CN219064385U
Application number: CN202223250430.8U
Authority: CN
Inventors: 张宏得; 黄赣; 魏俊成
Original assignee: Huadian Shaxian Energy Co ltd
Current assignee: Huadian Shaxian Energy Co ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-05-23
Anticipated expiration: 2032-12-05

Abstract

The utility model relates to a measuring tool for a gap between a stator and a rotor of a generator, which comprises a measuring ruler and an auxiliary plate, wherein one side of the measuring ruler is provided with scales from top to bottom, the other side wall of the measuring ruler is vertically provided with a sliding groove, the top end of the sliding groove is horizontal to 0 scale mark of the scales, and the auxiliary plate is in sliding connection with the sliding groove; the measuring ruler is characterized in that a stabilizing plate is further arranged at the top end of the measuring ruler, the stabilizing plate is horizontally arranged relative to the auxiliary plate, a telescopic rod is fixed on the stabilizing plate, a stabilizing frame is fixed at the tail end of the telescopic rod, the auxiliary plate is sleeved in the stabilizing frame, and the measuring ruler can penetrate into a generator to measure between stator and rotor and keep higher accuracy.

Description

Generator stator and rotor clearance measuring tool

Technical Field

The utility model relates to a measuring tool for a gap between a stator and a rotor of a generator, and belongs to the technical field of measuring devices.

Background

The stator and rotor air gap of the generator is one of important parameters for the performance of the generator, if the air gap is uneven, the generator is unstable to operate and is easy to vibrate, and if the air gap is too large, exciting current is increased, if the air gap is too small, collision or friction between the stator and the rotor during operation can be caused, and the generator is damaged.

The existing measuring method in the air gap measuring field mainly comprises two methods, namely a method of using bakelite plates with different thicknesses as plug gauges is adopted to measure four points or six points up and down, left and right, the contact condition of the bakelite plates and the measured gap length position are not easy to know when the method is used for measuring, repeated measurement is needed, multiple calculation is needed, the measuring error is large, and the data reliability is small; secondly, a method of measuring by adding a jackscrew measuring head to the top of a long rod is adopted, the long rod is inserted into an air gap of a stator and a rotor of a generator, but the actual position in the stator and the rotor cannot be seen, the jackscrew measuring head is adjusted by micro-motion only through intuition and experience of an operator, after the jackscrew measuring head is properly perceived to reach a measuring position, a screw of the jackscrew measuring head is locked, after the long rod is taken out, the size of the jackscrew head is measured by a micrometer caliper, the method relies on personal experience and perception of the operator, the measuring precision is low, and reliable data cannot be obtained; therefore, the design of the generator stator-rotor gap measuring tool which is accurate, simple and convenient is quite significant.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides a measuring tool for the gap between a stator and a rotor of a generator, which can accurately measure the gap distance between the stator and the rotor of the generator.

The technical scheme of the utility model is as follows:

the utility model provides a generator stator-rotor clearance measuring tool, includes dipperstick and accessory plate, dipperstick one side is provided with the scale from top to bottom, the sliding tray has been seted up perpendicularly to the other lateral wall of dipperstick, the top of sliding tray is level with the 0 scale mark of scale, accessory plate and sliding connection of sliding tray; the measuring ruler is characterized in that a stabilizing plate is further arranged at the top end of the measuring ruler, the stabilizing plate is horizontally arranged relative to the auxiliary plate, a telescopic rod is fixed on the stabilizing plate, a stabilizing frame is fixed at the tail end of the telescopic rod, and the auxiliary plate is sleeved in the stabilizing frame.

The sliding groove is internally provided with locking teeth, the bottom end of the auxiliary plate is fixedly connected with a sliding plate, the inner wall of the sliding plate is provided with locking pieces matched with the locking teeth for sliding, and the auxiliary plate is in sliding connection with the sliding groove through the sliding plate.

The length of the sliding plate is larger than that of the measuring ruler, and the part of the sliding plate, which exceeds the measuring ruler, is used for holding and sliding.

Wherein the length of the auxiliary plate is 30cm, and the length of the stabilizing plate is not more than 10cm.

The utility model has the following beneficial effects:

the clearance between the stator and the rotor of the generator can be accurately read through the cooperation of the measuring ruler and the auxiliary plate;

through the cooperation of telescopic link and stable frame, because firm board is in the horizontality, and the telescopic link is made for rigid material, consequently when the auxiliary plate shift about and measure, can help the auxiliary plate to keep the level, keep the stability of auxiliary plate to this accuracy of reinforcing result.

The auxiliary plate can be ensured not to slide randomly under natural conditions by matching the locking teeth and the locking pieces, but to be kept at a fixed position, so that the observation is convenient.

Drawings

FIG. 1 is a side view of the present utility model;

FIG. 2 is a schematic view of a measuring scale and a sliding plate structure of the present utility model;

FIG. 3 is a schematic view of a measuring scale and slide plate combination of the present utility model;

fig. 4 is a schematic diagram of the measurement of the present utility model.

The reference numerals in the drawings are as follows:

1. a measuring ruler; 2. an auxiliary plate; 3. a sliding groove; 4. a stabilizing plate; 5. a telescopic rod; 6. a stabilizing frame; 7. a sliding plate; 31. locking teeth; 71. locking the plate.

Detailed Description

The utility model will now be described in detail with reference to the drawings and to specific embodiments.

Referring to fig. 1, 2 and 3, the utility model provides a technical scheme:

the utility model provides a generator stator-rotor clearance measuring tool, includes dipperstick 1 and accessory plate 2, and dipperstick 1 one side is provided with the scale from top to bottom, and dipperstick 1 another lateral wall vertically has seted up sliding tray 3, and the top of sliding tray 3 is level with 0 scale mark of scale, accessory plate 2 and sliding tray 3 sliding connection; the dipperstick 1 top still is provided with firm board 4, and firm board 4 sets up for auxiliary plate 2 level, is fixed with telescopic link 5 on the firm board 4, and telescopic link 5 end is fixed with stable frame 6, and auxiliary plate 2 cover is located in stable frame 6. Specifically, the telescopic rod 5 is made of a rigid material, and is similar to an electric telescopic rod in structure, so that when the auxiliary plate 2 slides up and down through the sliding groove 3, the auxiliary plate 2 is ensured to be kept horizontal under the action of the stabilizing frame 6, the accuracy of a measurement result can be enhanced, and errors caused by swinging of the auxiliary plate 2 are avoided.

Further, locking teeth 31 are arranged in the sliding groove 3, the bottom end of the auxiliary plate 2 is fixedly connected with a sliding plate 7, locking pieces 71 which slide in a matched manner with the locking teeth 31 are arranged on the inner wall of the sliding plate 7, and the auxiliary plate 2 is in sliding connection with the sliding groove 3 through the sliding plate 7; specifically, the locking piece 71 and the locking tooth 31 are matched with each other, and the structure of the locking piece is the same as that of an art knife, so that the auxiliary plate 2 can be kept at a fixed position in a natural state, and the auxiliary plate 2 can be driven to displace only by moving the sliding plate 7 by a worker, and equipment readings are taken out after the sliding measurement is performed in a deep stator-rotor space, and the equipment readings are also in the same position, so that the measurement accuracy is ensured.

Further, the length of the sliding plate 7 is larger than that of the measuring ruler 1, and the part of the sliding plate 7 beyond the measuring ruler 1 is used for holding and sliding; is convenient for the operation of staff.

Further, the length of the auxiliary plate 2 is 30cm, and the length of the stabilizing plate 4 is not more than 10cm; because the gap between the stator and the rotor is the deepest part and the gap is narrower, the distance of 20cm is reserved to ensure the stable measurement.

Working principle example:

after the stator and the rotor are installed, an air gap exists between the stator and the rotor, and the connectors with the length of 20cm are reserved to extend into the air gap for measurement because the connectors with the length of about 10cm are arranged at the two ends of the rotor, so that the part contained in the stabilizing plate 4 cannot enter the air gap.

Firstly, when in measurement, the top end of the auxiliary plate 2 is flush with the 0 scale, then the auxiliary plate 2 is deeply penetrated into a gap between a stator and a rotor, when one end of the auxiliary plate 2 is propped against the side of the stator and the rotor on one side, the sliding plate 7 is pushed to drive the auxiliary plate 2 to displace in the sliding groove 3 of the measuring ruler 1 until the other end of the auxiliary plate 2 is propped against the other side of the stator and the rotor, and then the auxiliary plate 2 can be taken out; and then the distance of the displacement of the auxiliary plate 2 on the sliding groove 3, namely the displacement distance of the top end of the displaced auxiliary plate 2 relative to the 0 scale mark, is read, and the distance of the stator and rotor gap of the generator can be known by adding the size of the auxiliary plate 2.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. The utility model provides a generator stator rotor clearance measuring tool which characterized in that: the automatic measuring device comprises a measuring ruler (1) and an auxiliary plate (2), wherein scales are arranged on one side of the measuring ruler (1) from top to bottom, a sliding groove (3) is vertically formed in the other side wall of the measuring ruler (1), the top end of the sliding groove (3) is level with 0 scale mark of the scales, and the auxiliary plate (2) is in sliding connection with the sliding groove (3); the measuring ruler is characterized in that a stabilizing plate (4) is further arranged at the top end of the measuring ruler (1), the stabilizing plate (4) is horizontally arranged relative to the auxiliary plate (2), a telescopic rod (5) is fixed on the stabilizing plate (4), a stabilizing frame (6) is fixed at the tail end of the telescopic rod (5), and the auxiliary plate (2) is sleeved in the stabilizing frame (6).

2. The generator stator and rotor clearance measurement tool of claim 1, wherein: the sliding groove (3) is internally provided with locking teeth (31), the bottom end of the auxiliary plate (2) is fixedly connected with a sliding plate (7), the inner wall of the sliding plate (7) is provided with locking pieces (71) which are matched with the locking teeth (31) to slide, and the auxiliary plate (2) is in sliding connection with the sliding groove (3) through the sliding plate (7).

3. The generator stator and rotor clearance measurement tool of claim 2, wherein: the length of the sliding plate (7) is larger than that of the measuring ruler (1), and the part of the sliding plate (7) exceeding the measuring ruler (1) is used for holding and sliding.

4. The generator stator and rotor clearance measurement tool of claim 1, wherein: the length of the auxiliary plate (2) is 30cm, and the length of the stabilizing plate (4) is not more than 10cm.