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A Method for Finding the Pendulum of Large Horizontal Coupling

A coupling and horizontal technology, which is applied in the field of large-scale horizontal coupling to find the pendulum, can solve the problems of poor measurement effect, influence on the pendulum finding accuracy, and low measurement accuracy, and achieve the effect of eliminating the influence and solving the deflection

Active Publication Date: 2022-02-08
DONGFANG ELECTRIC MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] This patent document discloses a large-scale hydraulic turbine vertical coupling method for finding the swing. Manually measure the distance from the shaft measurement point to the piano line through the vertical line. The measurement effect is poor and the measurement accuracy is low. If the coupling is out of tolerance, the vertical If the pendulum is found by the formula, it cannot be corrected, which will affect the precision of the pendulum.

Method used

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  • A Method for Finding the Pendulum of Large Horizontal Coupling

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] see figure 1 , a method for finding a pendulum of a large horizontal coupling, comprising the following steps:

[0035] a. Connect the generator main shaft 4 of the shaft coupling pendulum finding device with the chuck 2 of the lying car through the universal joint 3, support the generator main shaft 4 through the center support frame 1 6 and the center support frame 2 7, and start the horizontal lathe 1 Machining the surface of generator main shaft 4;

[0036] b. The main shaft 4 of the generator is connected with the main shaft 5 of the water turbine after the processing is qualified, and the main shaft 5 of the water turbine is supported by the center support frame 3 8, and the center support frame 1 6, the center support frame 2 7 and the center support frame 3 8 are calculated by using finite element method Support deflection and analysis, fine-tune the arrangement position of central support frame 1 6, central support frame 2 7 and central support frame 3 8;

[...

Embodiment 2

[0041] see figure 1 , a method for finding a pendulum for a large horizontal coupling, comprising the following steps:

[0042] a. Connect the generator main shaft 4 of the coupling shaft finding and pendulum device with the horizontal lathe chuck 2 through the universal joint 3, support the generator main shaft 4 through the center support frame 1 6 and the center support frame 2 7, and start the horizontal lathe 1 Process the surface of the main shaft 4 of the generator;

[0043] b. The main shaft 4 of the generator is connected with the main shaft 5 of the turbine after it has passed the processing, and the main shaft 5 of the turbine is supported by the central support frame 38. The finite element calculation of the central support frame 1 6, the central support frame 2 7 and the central support frame 38 is performed. Support deflection and analysis, fine-tune the arrangement position of center support frame 1 6, center support frame 2 7 and center support frame 3 8;

[...

Embodiment 3

[0050] see figure 1 , a method for finding a pendulum for a large horizontal coupling, comprising the following steps:

[0051] a. Connect the generator main shaft 4 of the coupling shaft finding and pendulum device with the horizontal lathe chuck 2 through the universal joint 3, support the generator main shaft 4 through the center support frame 1 6 and the center support frame 2 7, and start the horizontal lathe 1 Process the surface of the main shaft 4 of the generator;

[0052] b. The main shaft 4 of the generator is connected with the main shaft 5 of the turbine after it has passed the processing, and the main shaft 5 of the turbine is supported by the central support frame 38. The finite element calculation of the central support frame 1 6, the central support frame 2 7 and the central support frame 38 is performed. Support deflection and analysis, fine-tune the arrangement position of center support frame 1 6, center support frame 2 7 and center support frame 3 8;

[...

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Abstract

The invention discloses a method for finding a swing of a large-scale horizontal coupling, which belongs to the technical field of a hydraulic generator coupling, and is characterized in that it comprises the following steps: a. connecting the generator main shaft of a swing-finding device through a universal joint and Connect the chuck of the horizontal car, support the main shaft of the generator through the first central support frame and the second central support frame, start the horizontal lathe to process the surface of the main shaft of the generator; b, apply the finite element calculation of the first central support frame, the second central support frame and The support deflection of the center support frame 3 is analyzed; c. Measure the distance from the surface of the main shaft to the center of rotation with a dial indicator to judge whether it meets the preset swing range; d. If it meets the preset swing range, complete the coupling search. put. The invention can eliminate the influence of the rotation accuracy of the main shaft of the machine tool on the machining accuracy, solve the deflection caused by the horizontal type of the ultra-long shaft system, improve the bearing capacity and rotation accuracy of the lying car, and greatly improve the accuracy and reliability of the pendulum finding accuracy, and the whole The operation is quite convenient.

Description

technical field [0001] The invention relates to the technical field of hydraulic generator couplings, in particular to a method for finding a pendulum of a large horizontal coupling. Background technique [0002] Conventional hydro-generator unit shaft coupling is used to find the shaft coupling, and the heavy-duty horizontal car is used to detect the radial and end surface runout of the mirror surface or guide bearing journal, flange plane and outer circle. The shafting of the unit that does not find the swing in the horizontal car coupling uses the boring die to process the main shaft of the generator and the turbine separately. Due to the errors in the alignment of the boring dies, the accuracy of the shaft coupling on the construction site is not high. [0003] The super-long shafting horizontal coupling adopts a horizontal car with one card and one support or double supports. When the length of the shafting reaches more than 10m and the weight reaches about 100t, the de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B5/00G01B5/252
CPCG01B5/00G01B5/252
Inventor 杨悦伟张翔付封旗
Owner DONGFANG ELECTRIC MACHINERY
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