Intelligent control system for thermal keying installation of large hydraulic generator rotor rim
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A hydroelectric generator and yoke key technology, which is applied in the manufacture of stator/rotor bodies, etc., can solve the problems of long cycle, uneven temperature inside and outside the yoke, and prolonging the work progress.
Inactive Publication Date: 2009-11-04
HEILONGJIANG UNIV
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Heating methods include copper loss method, iron loss method and electric heating method, etc.; in terms of control method, the heating process is manually operated according to past experience. If the heating rate is too fast, the internal and external temperatures of the yoke will be uneven when heated and expand, resulting in internal stress. If the heating rate is too slow, the cycle will be too long and the work progress will be prolonged; the method of measuring the gap increment is to use measuring tools to measure manually, and the error is large
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Embodiment 1
[0026] Embodiment 1, combining figure 1 , figure 2 , image 3 , the large-scale hydraulic generator rotor yoke thermal keying installation of the present invention is composed of a thermal insulation shell (8), a magnetic yoke assembly (30), a magnetic yoke key (13) and a rotor support arm assembly (31). The housing (8) is connected to the yoke assembly (30), the yoke assembly (30) is connected to the yoke key (13), and the yoke key (13) is connected to the rotor support arm assembly (31).
[0027] The hot-key installation of the rotor yoke of the large hydroelectric generator in the present invention also has the following technical features:
[0028] Described thermal insulation housing (8) comprises aluminum silicate thermal insulation layer (7), industrial furnace temperature measuring platinum resistor (9), air supply duct (10) and hot air blower (11), aluminum silicate thermal insulation layer (7) Located inside the thermal insulation housing (8), the hot air blower ...
Embodiment 2
[0037] Example 2, combined with Figure 1-Figure 7 , the present invention consists of heat preservation shell (8), aluminum silicate heat preservation layer (7), hot air blower (11), air supply pipe (10), industrial furnace temperature measuring platinum resistance (9), rotor support arm temperature measuring platinum resistance (2), ambient temperature temperature measuring platinum resistor (1), water spray solenoid valve (16), water spray pipe (3), nozzle (15), laser range finder (5), laser range finder mounting plate (6 ), a laser reflector (4), an electric bell (17), a small DCS system (18) and special software. The specific working process is as follows:
[0038] 1. The working process of the hardware under the action of special software: the magnetic yoke (12) is closed by the insulation shell (8), the aluminum silicate insulation layer (7), the hot air blower (11), and the air supply pipe (10). Heated industrial furnace, the temperature in the furnace is measured by...
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Abstract
The invention provides an intelligent control system for the thermal keying installation of a large hydraulic generator rotor rim, capable of automatically executing the heating process stipulation and enabling the installation process of thermal keying to be fully automatic. The thermal keying installation of the large hydraulic generator rotor rim includes a heat retaining housing, a rim assembly, rim keys and a rotor ally arm component, wherein the heat retaining housing is connected with the rim assembly which is connected with the rim keys, and the rim keys are connected with the rotor ally arm component. The intelligent control system comprises an input system, a small DCS system, a hot-air fan, a water injection elctromagnetic valve and an electric bell, wherein the input system is connected with the small DCS system, and the small DCS system is connected with the hot-air fan, the water injection elctromagnetic valve and the electric bell. Under the control of the small DCS system, the intelligent control system automatically executes the rate of temperature increase and the interval increment stipulated by the heating process, thereby changing the current situation of the manual operation heating process and the hand measurement by adopting measuring devices, and enabling the process of thermal keying installation to be fully automatic.
Description
(1) Technical field [0001] The invention relates to hydroelectric power generation technology, in particular to an intelligent control system for hot key installation of a rotor yoke of a large hydroelectric generator. (2) Background technology [0002] The diameter of the rotor of a large hydroelectric generator is relatively large, and the weight can reach several hundred tons. Due to the limitation of transportation conditions, large components such as the yoke on the rotor need to be installed at the construction site. The yoke is composed of several 3--4mm thick steel sheets, which concentrate more than 2 / 3 of the weight of the generator rotor. Therefore, the centrifugal force generated by the yoke is huge during the operation of a large hydroelectric generator, which can reach Nearly 10,000 tons. Therefore, when the yoke is installed, the method of keying the yoke is used to give a pre-tightening force to the yoke and the rotor arm in advance, so that the radial expa...
Claims
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