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Maintenance device for gearbox of wind generating set

A technology for wind power generators and maintenance, which is applied in the direction of wind power generators, wind power generation, engines, etc. It can solve problems such as inability to realize rotation, requirements for speed, and no power input, etc., and achieves easy use and promotion, low cost, and easy concentration The effect of control

Pending Publication Date: 2021-08-13
RENERGY ELECTRIC TIANJIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the gear box in the storage state cannot rotate without power input; and the speed is required, and it needs to rotate at a speed lower than the normal working state

Method used

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  • Maintenance device for gearbox of wind generating set
  • Maintenance device for gearbox of wind generating set
  • Maintenance device for gearbox of wind generating set

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] control circuit such as Figure 4 , Figure 5 As shown in , the main pump of the gearbox starts to run, including the following steps:

[0032] Check diesel generator diesel oil level;

[0033] Check the diesel generator oil level;

[0034] Check the phase sequence of the wiring;

[0035] Check grounding;

[0036] Check that all air switches and circuit breakers are disconnected;

[0037] Start the diesel generator;

[0038] Close the first circuit breaker 3 of the electric control box 1, that is, F1 in the figure;

[0039] Close the motor switch 4 of the electric control box 1, which is Q1 in the figure;

[0040] Close the motor circuit breaker of the tower base cabinet, so that the 400VAC of the tower base cabinet supplies power to the engine room power cabinet;

[0041] Close the motor protection circuit breaker of the engine room power cabinet and the switches of the two oil pump motors in sequence.

Embodiment 2

[0043] Generator lubrication pump start-up operation:

[0044] Check diesel generator diesel oil level;

[0045] Check the diesel generator oil level;

[0046] Check the phase sequence of the wiring;

[0047] Check grounding;

[0048] Check that all air switches and circuit breakers are disconnected;

[0049] Start the diesel generator;

[0050] Close the first circuit breaker 3 of the electric control box 1 in sequence (that is, figure 2 Middle F1), the second circuit breaker 5 (ie figure 2 Middle F2);

[0051] Close the motor circuit breaker of the tower base cabinet, so that the 400VAC of the tower base cabinet supplies power to the engine room power cabinet;

[0052] Close the motor protection circuit breaker and generator lubricating pump of the power cabinet in the engine room in sequence.

Embodiment 3

[0054]Electric control box 1 operation data monitoring:

[0055] When the diesel generator is used on the project site, it is necessary to power on the tower base cabinet and the engine room signal cabinet, and connect the optical fiber from the tower base cabinet to the signal cabinet, and check the gear oil and water content data on the screen of the tower base cabinet;

[0056] If the water content exceeds 80%, it is necessary to use a water filter to filter the gear oil;

[0057] If the water content exceeds 95%, oil samples need to be taken for inspection;

[0058] If the water content exceeds 2000ppm, the gear oil needs to be replaced.

[0059] The maintenance time in the above scheme is 1H, and the frequency of synchronous operation of the two gear box oil pump motors is 24.50Hz, which is also the minimum frequency value to meet the flow rate required for gearbox lubrication and maintenance, which is lower than the theoretical calculation of 30Hz (28°C and 45°C °C gea...

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Abstract

The invention discloses a maintenance device for a gearbox of a wind generating set. The maintenance device comprises a generator and an electric control box, A frequency converter, a circuit breaker, a motor switch and a plurality of terminal groups are arranged in the electric control box. A three-phase output end of the generator is connected with the first terminal group of the electric control cabinet through a first cable, and three wiring terminals of the fourth terminal group are respectively connected with a power supply input terminal of the frequency converter. A tower footing cabinet is connected with the second terminal group and the third terminal group of the electric control cabinet through a second cable; and three wiring terminals of the third terminal group are respectively connected with an output terminal of the frequency converter through the motor switch. According to the maintenance device for the gearbox of the wind generating set, the rotating speed of a transmission chain is lower than the flow value in the original low-speed state, and the maintenance function is achieved; and the long-term stable operation of the whole maintenance device is ensured. The device is simple in structure, convenient to use, low in cost and easy to use and popularize.

Description

technical field [0001] The invention relates to the application field of electric power products, in particular to a maintenance device for a gearbox of a wind power generating set. Background technique [0002] According to relevant requirements, offshore wind turbines must complete the following maintenance work during long-term storage: 1. The gearbox is oiled and lubricated once every 1 to 2 months; 2. The pitch battery is charged once every 6 months; 3. UPS The power supply is charged once every 3 to 6 months; 4. Power-on work for dehumidification and maintenance of other electrical equipment, climbers, tower lighting, offshore cranes, and engine room maintenance cranes. [0003] Among them, the regular maintenance of the gearbox plays a very important role in ensuring the life of the gearbox and the internal gears and bearings of the generator. Therefore, the maintenance work of the gearbox of the offshore unit is now formulated to provide a basis for the implementatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D80/50F03D15/00F03D80/70F16H57/04F16H57/02
CPCF03D80/50F03D15/00F03D80/70F16H57/0436F16H2057/0081F16H2057/02078Y02E10/72
Inventor 杨南张振莹
Owner RENERGY ELECTRIC TIANJIN