Generator stator and rotor gap measuring device

Abstract

Provided is a generator stator-rotor gap measuring device. An existing measuring tool can determine the actual distance of a gap only by taking out and adjusting a positioning screw for multiple times during measurement, and is low in efficiency and large in measurement error during measurement. The device comprises an M-shaped supporting block, a handheld rod is fixed to the M-shaped supporting block, an operation box is fixed to the end of the handheld rod, semicircular insertion holes are formed in the two ends of the M-shaped supporting block respectively, a sliding rod is inserted into each semicircular insertion hole, the end of each sliding rod is connected with one end of a spring, and the other end of each sliding rod is connected with the other end of the spring. The other end of the spring is inserted into a circular groove in the middle of the M-shaped supporting block and is fixed; the two sides of the front end of the M-shaped supporting block are each provided with an insertion groove, and a suction cup electromagnet is fixed in each insertion groove. The device is used for measuring the stator-rotor gap of the generator.

Description

Technical Field

[0001] The utility model relates to a device for measuring the gap between a stator and a rotor of a generator. Background Art

[0002] When measuring the stator-rotor gap of a generator, the rotor guard ring blocks the gap, the measurement distance is small, and it is inconvenient for maintenance personnel to measure with their arms. Therefore, measurement is performed using a measuring tool. The current measuring tool requires removing the adjustment positioning screw multiple times during measurement to determine the actual distance of the gap, which is inefficient and results in large measurement errors. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a device for measuring the gap between the stator and rotor of a generator.

[0004] The above purpose is achieved through the following technical solutions:

[0005] A generator stator-rotor gap measuring device comprises an M-shaped support block, a hand-held rod fixed to the M-shaped support block, an operating box fixed to the end of the hand-held rod, semicircular sockets respectively formed at both ends of the M-shaped support block, a slide rod inserted into each semicircular socket, the end of the slide rod connected to one end of a spring, the other end of the spring inserted into a circular groove in the middle of the M-shaped support block and fixed;

[0006] Slots are respectively provided on both sides of the front end of the M-shaped support block, and a suction cup electromagnet is fixed in each of the slots.

[0007] In the generator stator-rotor gap measuring device, a battery pack is fixed in the operating box, and a switch is fixed on the operating box.

[0008] In the generator stator-rotor gap measuring device, the handheld rod is a hollow cylindrical tube. Beneficial effects

[0009] 1. The utility model extends the device between the stator and rotor of the generator. After the suction cup electromagnet is powered off, the two slides slide under the action of the spring, one slide rod touches the stator, and the other slide rod touches the rotor. This position is the actual position of the stator-rotor gap. Then the suction cup electromagnet is powered on to fix the position of the slide rod. After it is taken out, the distance between the ends of the two slide rods can be measured with a vernier caliper, and the gap between the stator and rotor can be accurately obtained.

[0010] 2. The utility model has a simple structure and is easy to operate, and does not require manpower to adjust the position multiple times. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1It is a top view of the utility model;

[0012] Figure 2 It is a side view of the utility model;

[0013] Figure 3 It is a structural diagram of the utility model;

[0014] In the figure: 1. M-shaped support block; 2. slot; 3. slide bar; 4. limit plate; 5. spring; 6. handle bar; 7. operation box; 8. suction cup electromagnet; 9. semicircular jack; 10. round slot; 11. positive power cord; 12. negative power cord; 13. switch; 14. battery pack. DETAILED DESCRIPTION

[0015] like Figure 1-3 As shown, a generator stator-rotor gap measuring device comprises an M-shaped support block 1, a hand-held rod 6 is fixed on the M-shaped support block, the hand-held rod is a hollow cylindrical tube, the interior of which is used to pass wires, an operating box 7 is fixed to the end of the hand-held rod, and semicircular holes 9 are respectively opened at both ends of the M-shaped support block, each of which is inserted with a slide rod 3, which is a semicircular rod. The end of the slide rod is connected to one end of the spring 5, and the other end of the spring is inserted into the circular groove 10 in the middle of the M-shaped support block and fixed;

[0016] Slots 2 are respectively provided on both sides of the front end of the M-shaped support block, and a suction cup electromagnet 8 is fixed in each of the slots.

[0017] In the generator stator-rotor gap measuring device, a battery pack 14 is fixed in the operating box, and a switch 13 is fixed on the operating box.

[0018] The positive terminal of the battery pack is connected to the input terminal of the switch through a wire, and the output terminal of the switch is connected to the positive power line. The positive power line is divided into two branches, each branch is connected to the positive connection of the suction cup electromagnet, and the negative connection of the suction cup fixed magnet is connected to the power line. The two power lines are merged into a negative power line and connected to the negative terminal of the battery pack through the inside of the handheld rod, realizing a power supply circuit for the suction cup electromagnet.

[0019] Working principle: When the gap needs to be measured, first slide the two slide bars to the middle respectively, compress the two springs, and then turn on the switch to energize the suction cup electromagnet to suck the slide bar. The slide bar is an iron slide bar, which can keep the slide bar in place at this time. Then hold the handle and extend the device between the stator and the rotor inside the generator. At this time, turn off the switch and the suction cup electromagnet is de-energized, causing the slide bar to slide under the action of the spring. One of the slide bars slides to stop at the top of the stator, and the other slide bar slides to stop at the top of the rotor. At this time, turn on the switch and energize the suction cup electromagnet to suck the two slide bars to prevent their position from changing. Then take out the device and measure the distance between the ends of the two slide bars with a vernier caliper. This distance is the gap between the stator and the rotor.

Claims

1. A generator stator-rotor gap measuring device, characterized by: The device comprises an M-shaped support block, a handle bar is fixed on the M-shaped support block, an operating box is fixed on the end of the handle bar, semicircular sockets are respectively provided at both ends of the M-shaped support block, a slide bar is inserted into each semicircular socket, the end of the slide bar is connected to one end of a spring, and the other end of the spring is inserted into the circular groove in the middle of the M-shaped support block and fixed; Slots are respectively provided on both sides of the front end of the M-shaped support block, and a suction cup electromagnet is fixed in each of the slots.

2. The generator stator-rotor gap measuring device according to claim 1, characterized in that: A battery pack is fixed in the operation box, and a switch is fixed on the operation box.

3. The generator stator-rotor gap measuring device according to claim 2, characterized in that: The hand-held rod is a hollow cylindrical tube.

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