CN216523606U

CN216523606U - High-water-head suspension type pumped storage hydroelectric generating set rotor circle measuring frame

Info

Publication number: CN216523606U
Application number: CN202123087115.3U
Authority: CN
Inventors: 委志雄; 葛军; 杨宏伟; 李冰; 阚迪; 温峰; 黄圣轩; 成春泽; 张�浩; 刘敏; 刘宜非
Original assignee: Harbin Electric Machinery Co Ltd
Current assignee: Harbin Electric Machinery Co Ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-05-13
Anticipated expiration: 2031-12-10

Abstract

The utility model discloses a high water head suspension type pumped storage hydro-power generating unit rotor circle measuring frame, which mainly comprises: the center revolving body and the upright post assembly body are assembled at the end part of a measured main shaft, the revolving center of the measuring arm of the circle measuring frame is adjusted to be concentric with the axis of the main shaft sliding rotor by adopting a self-aligning bolt, and the revolving level of the measuring arm of the circle measuring frame is adjusted by the leveling bolt. 4 deep groove ball bearings on the rotary table roll along the circumference of the excircle of the main shaft sliding rotor, the rotation of a measuring arm of the circle measuring frame is ensured to be concentric with a guide cylindrical surface of the main shaft sliding rotor, a dial indicator magnetic base is adsorbed on the measuring rod, and when the circle measuring frame works, an operator pushes a balance weight arm to the dial indicator slowly, at a constant speed and horizontally along the same direction to reach a measuring point of a rotor magnetic yoke and a magnetic pole excircle, so that the measurement of the sizes of the rotor magnetic yoke and the magnetic pole excircle is realized, and the roundness and the coaxiality of the rotor magnetic yoke and the magnetic pole excircle are ensured. The utility model has the advantages of simple and compact structure, strong universality, stable and reliable measurement precision and high measurement efficiency.

Description

High-water-head suspension type pumped storage hydroelectric generating set rotor circle measuring frame

Technical Field

The utility model relates to measuring equipment, in particular to a high-head suspension type pumped storage hydroelectric generating set rotor circle measuring frame.

Background art:

in recent years, pumped storage hydropower stations are rapidly developed, and the rated water head of a unit is gradually improved and is increased from the previous 500-meter section to more than 700-meter section. The magnetic yoke and magnetic pole of the high water head suspension type pumping storage unit are assembled and measured as follows: 1) the main shaft of the generator of the high-head suspension type unit, the rotor bracket and the top shaft are of an integrated structure, and the total length reaches about 11 meters; 2) the main shaft is in a vertical placement state when the magnetic yoke and the magnetic pole are assembled with the main shaft in a construction site, if the circular measuring frame with the traditional structure is adopted to fix the magnetic yoke and the magnetic pole on the top end of the main shaft, the measuring arm needs to be lengthened to be more than 8 meters, and the strength and the precision of the circular measuring frame cannot meet the measuring precision requirement of 0.05 mm; 3) the pumped storage power station circle measuring frame is matched with the excircle and the end face of a main shaft sliding rotor, the precision cannot meet the requirement of measurement precision during assembly and use, finally, a steel wire hanging measurement mode is adopted, the measurement and assembly efficiency is greatly reduced, each point cannot be well measured, and the assembly period is doubled. Aiming at the increase of the number of the existing high-water head suspension type pumped storage hydroelectric generating sets and the improvement of the requirements of the assembly quality and the installation period of a construction site, the measuring equipment which has the advantages of simple structure, high generalization degree, high measuring precision and high measuring efficiency is urgently needed.

Disclosure of Invention

The utility model aims to disclose a high-water-head suspension type pumped storage hydroelectric generating set rotor circle measuring frame which is simple in structure, high in generalization degree, high in measuring accuracy and measuring efficiency. The utility model is realized by the following technical scheme: is ═ i

A high-head suspension type pumped storage hydroelectric generating set rotor circle measuring frame is composed of a central revolving body, a stand column, a steel wire rope, a connecting rod, a balancing weight, a counterweight arm, a turntable, a measuring arm, a reinforcing rod, a measuring rod, a dial indicator, a deep groove ball bearing, an adjusting plate, an adjusting bolt, an auxiliary aligning seat, an aligning bolt, a leveling bolt and a handle bolt; the center revolving body is arranged on the stand column, the stand column is fixedly connected with the screw hole at the end part of the main shaft, the turntable is fixed on the center revolving body through the connecting rod, the counterweight arm and the measuring arm are connected with the turntable, the measuring rod and the reinforcing rod are connected with the measuring arm, the dial indicator is fixed on the measuring rod, the counterweight block is fixed on the counterweight arm, and two ends of the counterweight arm and the measuring arm are respectively connected with two sides of the center revolving body through 2 steel wire ropes.

In the rotor circle measuring frame of the high-water-head suspension type pumped storage hydro-power generating unit, the auxiliary centering seat is assembled at the end part of the main shaft by a fastening bolt.

In the rotor circle measuring frame of the high-water-head suspension type pumped storage hydro-power generating unit, the aligning bolt is fixed on the auxiliary aligning seat.

In the rotor circle measuring frame of the high-water-head suspension type pumped storage hydro-power generating unit, the leveling bolt is fixed on the upright flange.

In the rotor circle measuring frame of the high-water-head suspension type pumped storage hydroelectric generating set, 4 adjusting plates which are uniformly distributed circumferentially are arranged on a rotary disc of the circle measuring frame.

In the above high-head suspension pumped storage hydro-power generating unit rotor circle measuring frame, the number of the deep groove ball bearings is 4, and the 4 deep groove ball bearings and the adjusting bolts are respectively fixed on the 4 adjusting plates.

Technical effects

1. The circle measuring frame structure abandons the original positioning and supporting mode of relying on the excircle and the upper end face of a main shaft sliding rotor, adopts a mode of connecting and fixing a flange at the end part of an upright post and a screw hole at the upper end part of the main shaft, adopts a self-aligning bolt to adjust the rotation center of a measuring arm of the circle measuring frame to be concentric with the axis of the sliding rotor, and adjusts the rotation level of the measuring arm of the circle measuring frame of the rotor by a leveling bolt to eliminate the measurement error caused by the self shape and position jumping deviation of the main shaft.

2. 4 deep groove ball bearings which are uniformly distributed on the circumference are designed on a turntable of the circle measuring frame, the bearings roll along the circumference of the guide cylindrical surface of the sliding rotor, and the measuring arm of the circle measuring frame is ensured to be concentric with the guide cylindrical surface of the sliding rotor when rotating, so that the measuring arm is ensured to be concentric with the axis of the main shaft at the measuring point of the magnetic yoke and the excircle of the magnetic pole, the radial runout of the circle measuring frame is less than 0.05mm when rotating for one circle, and the requirement of measuring precision is met.

3. The utility model simultaneously replaces the mode of measuring the sizes from the outer circles of the magnetic yokes and the magnetic poles of the rotor to the center of the rotor by the original hanging steel wire, and the measurement precision and the measurement efficiency are both greatly improved.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a cross-sectional view of the utility model A-A.

FIG. 3 is a cross-sectional view of the utility model B-B.

FIG. 4 is an enlarged view of the present invention I.

Detailed Description

As shown in fig. 1, the present invention is composed of a central revolving body 1, a column 2, a steel wire rope 3, a connecting rod 4, a balancing weight 5, a counterweight arm 6, a turntable 7, a measuring arm 8, a reinforcing rod 9, a measuring rod 10, a dial indicator 11, and other main components. The central revolving body 1 is arranged on an upright post 2, so that the central revolving body 1 revolves along the axis of the upright post 2 and is positioned radially and axially, the upright post 2 is fixedly connected with a screw hole at the end part of a main shaft, a turntable 7 is connected with the central revolving body 1 into a whole through 4 connecting rods 4 which are uniformly distributed on the circumference, a counterweight arm 6 and a measuring arm 8 are connected onto the turntable 7, a measuring rod 10 and a reinforcing rod 9 are connected onto the front end part of the measuring arm 8, a counterweight 5 is fixed on the counterweight arm 6, can move back and forth along the counterweight arm for adjustment, the two ends of the counterweight arm 6 and the measuring arm 8 are respectively connected with the two sides of the central revolving body 1 through 2 steel wire ropes 3, used for balancing the unbalanced moment of each pair of rotary discs, the dial indicator 11 is adsorbed on the measuring rod 10, when the circle measuring frame works, an operator pushes the balance weight arm 6 to the dial indicator 11 to reach the measuring point of the outer circle of the magnetic yoke and the magnetic pole of the rotor slowly, uniformly and horizontally along the same direction.

As shown in fig. 3, the auxiliary aligning seat 15 is fixed at the end of the measured spindle by a fastening bolt 18, the aligning bolt 16 is assembled on the auxiliary aligning seat 15, the leveling bolt 17 is fixed on the flange of the column 2, the rotation center of the circular measuring frame measuring arm 8 is adjusted to be concentric with the axis of the spindle sliding rotor by the aligning bolt 16, and the rotation level of the circular measuring frame measuring arm 8 is adjusted by the leveling bolt 17.

As shown in fig. 4, 4 deep groove ball bearings 12 are uniformly arranged on the turntable 7 through adjusting plates 13, the deep groove ball bearings 12 roll along the circumference of the outer circle of the main shaft sliding rotor, and the 4 deep groove ball bearings 12 can be adjusted in position along the radial direction of the guiding cylindrical surface of the outer circle of the main shaft sliding rotor through adjusting bolts 14, so that the rotation of the measuring arm 8 of the circle measuring frame is ensured to be concentric with the guiding cylindrical surface of the sliding rotor.

The utility model has the following application effects:

1. a new way for assembling and measuring the magnetic yoke and the magnetic pole of the rotor of the high-water-head suspension type pumped storage generator set is developed.

2. The problem of high water head suspension type pumped storage generating set rotor yoke, magnetic pole assembly measurement inefficiency, measurement station lack lead to rotor yoke, magnetic pole post-assembly circularity and concentricity not good is solved.

3. The device has stable and reliable measurement precision and high efficiency, and the assembly period is doubled.

4. The utility model has the advantages of simple and compact structure, strong universality, stable and reliable measurement precision and high measurement efficiency.

Claims

1. A high water head suspension type pumped storage hydroelectric generating set rotor circle measuring frame is characterized in that: the device comprises a central revolving body (1), a stand column (2), a steel wire rope (3), a connecting rod (4), a balancing weight (5), a balancing weight arm (6), a turntable (7), a measuring arm (8), a reinforcing rod (9), a measuring rod (10), a dial indicator (11), a deep groove ball bearing (12), an adjusting plate (13), an adjusting bolt (14), an auxiliary aligning seat (15), an aligning bolt (16), a leveling bolt (17) and a handle bolt (18); the center revolving body (1) is installed on an upright post (2), the upright post (2) is fixedly connected with a screw hole at the end part of a main shaft, a turntable (7) is fixed on the center revolving body (1) through a connecting rod (4), a balance weight arm (6) and a measuring arm (8) are connected with the turntable (7), the measuring rod (10) and a reinforcing rod (9) are connected with the measuring arm (8), a dial indicator (11) is fixed on the measuring rod (10), a balance weight (5) is fixed on the balance weight arm (6), and two ends of the balance weight arm (6) and the measuring arm (8) are respectively connected with two sides of the center revolving body (1) through 2 steel wire ropes (3).

2. The high head suspension pumped-storage hydro-power generating unit rotor circle measuring frame of claim 1, characterized in that: the auxiliary centering seat (15) is assembled at the end part of the main shaft by a fastening bolt (18).

3. The high head suspension pumped-storage hydro-power generating unit rotor circle measuring frame of claim 1, characterized in that: the aligning bolt (16) is fixed on the auxiliary aligning seat (15).

4. The high head suspension pumped-storage hydro-power generating unit rotor circle measuring frame of claim 1, characterized in that: the leveling bolt (17) is fixed on the flange of the upright post (2).

5. The high head suspension pumped-storage hydro-power generating unit rotor circle measuring frame of claim 1, characterized in that: and 4 adjusting plates (13) which are uniformly distributed on the circumference are arranged on the rotary table (7) of the circle measuring frame.

6. The high head suspended pumped-storage hydro-power generating unit rotor circle measuring frame of claim 1, characterized in that: the number of the deep groove ball bearings (12) is 4, and the 4 deep groove ball bearings (12) and the adjusting bolts (14) are respectively fixed on the 4 adjusting plates (13).