Generator stator and rotor gap measuring method

Abstract

The invention discloses a generator stator-rotor gap measuring method. 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 method comprises the following steps; when the gap needs to be measured, the two sliding rods respectively slide towards the middle, and then the switch is turned on, so that the sucker electromagnets are electrified to attract the sliding rods; then the holding rod is held by a hand to extend the device between a stator and a rotor in the generator, the switch is turned off, the suction cup electromagnet is powered off, the sliding rods slide under the action of the spring, one sliding rod stops sliding to abut against the stator, and the other sliding rod stops sliding to abut against the rotor; the switch is turned on, the suction cup electromagnet is powered on, the two sliding rods are sucked, then the device is taken out, the distance between the ends of the two sliding rods is measured through the vernier caliper, and the distance is the gap between the stator and the rotor. The method is used for measuring the generator stator-rotor gap.

Description

Technical Field

[0001] The invention relates to a method 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 gap is small and the distance is far due to the obstruction of the rotor guard ring. It is inconvenient for maintenance personnel to measure with their arms, so measurement is performed using measuring tools. Current measuring tools require the adjustment and positioning screws to be taken out multiple times during measurement to determine the actual distance of the gap, which results in low measurement efficiency and large measurement errors. Summary of the invention

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

[0004] The above purpose is achieved through the following technical solutions: A method for measuring the gap between a stator and a rotor of a generator, the method comprising the following steps: (1) When the gap needs to be measured, first slide the two slide bars toward the middle, insert one end of the spring into the circular groove in the middle of the M-shaped support block, and compress the two springs; (2) Then turn on the switch to energize the suction cup electromagnet, which sucks the sliding rod. The sliding rod is made of iron and can keep the sliding rod in place. (3) Then hold the handle and insert the device between the stator and the rotor inside the generator. At this time, turn off the switch and the suction cup electromagnet is powered off, causing the slide bar to slide under the action of the spring. One of the slide bars slides to the top of the stator and stops, and the other slide bar slides to the top of the rotor and stops. (4) At this time, turn on the switch, the suction cup electromagnet is energized, and the two slide bars are sucked to prevent their position from changing. Then take out the device and use a vernier caliper to measure the distance between the ends of the two slide bars. This distance is the gap between the stator and the rotor.

[0005] The method for measuring the gap between the stator and rotor of a generator is described, wherein a hand-held rod is fixed on the M-shaped support block, an operation box is fixed on the end of the hand-held rod, semicircular holes are respectively opened at both ends of the M-shaped support block, a sliding rod is inserted into each of the semicircular holes, the end of the sliding rod 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.

[0006] In the method for measuring the gap between a stator and a rotor of a generator, a battery pack is fixed in the operating box, and a switch is fixed on the operating box.

[0007] In the method for measuring the gap between a generator stator and a rotor, the hand-held rod is a hollow cylindrical tube. Beneficial Effects

[0008] 1. The present invention extends the device between the stator and the rotor of the generator. After the suction cup electromagnet is powered off, the two slides slide under the action of the spring, one of the slides is pushed to the stator, and the other slide is pushed to 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. After taking it out, the distance between the ends of the two slides can be measured by a vernier caliper, and the gap between the stator and the rotor can be accurately obtained.

[0009] 2. The present invention has a simple structure, is easy to operate, and does not require manpower to adjust the position multiple times. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a top view of the present invention; Figure 2 is a side view of the present invention; Figure 3 It is a schematic diagram of the structure of the present invention; In the figure: 1. M-shaped support block; 2. slot; 3. slide bar; 4. limit plate; 5. spring; 6. hand-held rod; 7. operation box; 8. suction cup electromagnet; 9. semicircular jack; 10. round groove; 11. positive power cord; 12. negative power cord; 13. switch; 14. battery pack. DETAILED DESCRIPTION

[0011] like Figure 1-3 As shown, a method for measuring the gap between a stator and a rotor of a generator comprises the following steps: (1) When the gap needs to be measured, first slide the two slide bars toward the middle, insert one end of the spring into the circular groove in the middle of the M-shaped support block, and compress the two springs; (2) Then turn on the switch to energize the suction cup electromagnet, which sucks the sliding rod. The sliding rod is made of iron and can keep the sliding rod in place. (3) Then hold the handle and insert the device between the stator and the rotor inside the generator. At this time, turn off the switch and the suction cup electromagnet is powered off, causing the slide bar to slide under the action of the spring. One of the slide bars slides to the top of the stator and stops, and the other slide bar slides to the top of the rotor and stops. (4) At this time, turn on the switch, the suction cup electromagnet is energized, and the two slide bars are sucked to prevent their position from changing. Then take out the device and use a vernier caliper to measure the distance between the ends of the two slide bars. This distance is the gap between the stator and the rotor.

[0012] A method for measuring the gap between a stator and a rotor of a generator 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 inside of which is used to pass wires, an operation box 7 is fixed on the end of the hand-held rod, semicircular jacks 9 are respectively provided at both ends of the M-shaped support block, a sliding rod 3 is inserted into each of the semicircular jacks, the sliding rod is a semicircular rod, the end of the sliding rod is connected to one end of a spring 5, and the other end of the spring is inserted into a circular groove 10 in the middle of the M-shaped support block and fixed; 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.

[0013] In the generator stator-rotor gap measurement method, a battery pack 14 is fixed in the operation box, and a switch 13 is fixed on the operation box.

[0014] The positive terminal of the battery pack is connected to the input terminal of the switch through an electric wire, 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, the negative connection of the suction cup fixed magnet is connected to the power line, the two power lines are combined into a negative power line, which is connected to the negative terminal of the battery pack through the inside of the hand-held rod, thus realizing a power supply circuit of the suction cup electromagnet.

Claims

1. A method for measuring the gap between a stator and a rotor of a generator, characterized in that: The method comprises the following steps: (1) When the gap needs to be measured, first slide the two slide bars toward the middle, insert one end of the spring into the circular groove in the middle of the M-shaped support block, and compress the two springs; (2) Then turn on the switch to energize the suction cup electromagnet, which sucks the sliding rod. The sliding rod is made of iron and can keep the sliding rod in place. (3) Then hold the handle and insert the device between the stator and the rotor inside the generator. At this time, turn off the switch and the suction cup electromagnet is powered off, causing the slide bar to slide under the action of the spring. One of the slide bars slides to the top of the stator and stops, and the other slide bar slides to the top of the rotor and stops. (4) At this time, turn on the switch, the suction cup electromagnet is energized, and the two slide bars are sucked to prevent their position from changing. Then take out the device and use a vernier caliper to measure the distance between the ends of the two slide bars. This distance is the gap between the stator and the rotor.

2. The method for measuring the gap between a stator and a rotor of a generator according to claim 1, wherein: A hand-held rod is fixed on the M-shaped support block, an operation box is fixed at the end of the hand-held rod, semicircular holes are respectively opened at both ends of the M-shaped support block, a slide rod is inserted into each of the semicircular holes, the end of the slide rod is connected to one end of the 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.

3. The method for measuring the gap between a stator and a rotor of a generator according to claim 2, wherein: A battery pack is fixed in the operation box, and a switch is fixed on the operation box.

4. The method for measuring the gap between a stator and a rotor of a generator according to claim 3 is characterized in that: The hand-held rod is a hollow cylindrical tube.

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