Measuring device and measuring method of narrow space
A measuring device and space technology, which is applied in the field of measuring devices in narrow spaces, can solve the problems of difficult measurement and narrow measurement space of yoke dovetail slots, so as to achieve the effect of improving manufacturing accuracy and performance indicators, increasing product quality and pass rate
Inactive Publication Date: 2019-07-19
HANGZHOU FROMO ELECTROMECHANICAL TECH
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Problems solved by technology
However, due to the narrow measurement space and special shape of the yoke dovetail groove, it is very difficult to measure
Method used
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Embodiment
[0021] Embodiment: As shown in the accompanying drawings, the measuring device and measuring method for such a narrow space mainly include a generator yoke 1, an expansion sleeve measuring tool 2, an oil drum 3, a weight 4, an insulating pad 5, and a piano wire 6 , piano wire bracket 7, piano wire clamp 8, yoke processing surface 9, power supply 16, earphone 17, wire 18, the piano wire bracket 7 evenly hangs the piano wire 6 on the pigeon of the generator yoke 1 through the piano wire clamp 8 In the tail groove 19, the piano wire support 7 is installed on the end of the generator yoke 1, and an insulating pad 5 is arranged between the piano wire support 7 and the generator yoke 1 to ensure the insulation between the two. The other end of the piano wire 6 is connected to the heavy Hammer 4, weight 4 is immersed in the oil of oil barrel 3 to increase the stability of weight 4, expansion sleeve type measuring tool 2 detects the distance between piano wire 6 and yoke processing sur...
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The invention discloses a measuring device and a measuring method of a narrow space. The measuring device mainly comprises an expansion sleeve type measuring tool or the like, a piano wire bracket isused for uniformly suspending a piano wire in a dovetail groove of a generator magnet yoke through a piano wire clamp, the piano wire bracket is installed at the end part of the generator magnet yoke,an insulating pad is arranged between the piano wire bracket and the generator magnet yoke to ensure the insulation therebetween, the other end of the piano wire is connected with a heavy hammer, theheavy hammer is immersed in the oil of an oil drum to increase the stability of the heavy hammer, the expansion sleeve type measuring tool detects the distance between the piano wire and a magnet yoke processing surface in the dovetail groove, the expansion sleeve type measuring tool is connected to one end of an electric circuit formed by a power supply, an earphone and a conducting wire, whichare connected in series, and the other end of the electric circuit is connected with the piano wire bracket. The measuring device disclosed by the invention realizes the measurement of the internal dimension of the dovetail groove of the magnet yoke of a generator rotor in the narrow space by means of the cooperation of the expansion sleeve type measuring tool and the circuit, thereby greatly increasing the product qualification rate and improving the manufacture precision and performance indicators of the corresponding generator.
Description
technical field [0001] The invention relates to the field of generator measurement, in particular to a measuring device and a measuring method in a narrow space. Background technique [0002] The role of the generator rotor yoke is to form part of the magnetic circuit of the generator, fix the magnetic poles and generate the moment of inertia. During operation, it is affected by torque, centrifugal force and hot keying force. Due to the high rotor speed of the high head pumped storage power generator generator, its manufacturing precision is also very high. A dovetail keyway is arranged on the yoke of the generator rotor, and the magnetic poles of the generator rotor are connected to the yoke through the dovetail keyway. During the high-speed rotation of the generator, the centrifugal force of the magnetic poles causes a great force on the keyway of the yoke. In order to ensure that each keyway is evenly stressed, it is necessary to have a high space dimension requirement ...
Claims
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Login to View More IPC IPC(8): G01B5/28G01B5/245
CPCG01B5/245G01B5/28
Inventor 徐墨郑先云
Owner HANGZHOU FROMO ELECTROMECHANICAL TECH