Portable detection device for hydraulic system of wind generating set

Abstract

Provided is a portable detection device for a hydraulic system of a wind generating set. When the fan breaks down, the reason of the fault cannot be judged timely and accurately, the fault needs to be returned to a workshop to be overhauled, and the power generation efficiency of the fan is certainly influenced by the shutdown overhauling process. The system comprises a motor power supply loop and a motor and hydraulic system test loop, the motor power supply loop is a primary loop, and the motor and hydraulic system test loop is a secondary loop. The motor and hydraulic system test loop comprises a motor starting execution loop and a control loop, the motor starting execution loop is connected with the control loop in parallel, and the control loop comprises a power module (U). And the output end of the power supply module is connected in parallel with the motor starting control loop, the pressure relief control loop, the pressurization control loop, the monitoring loop, the pressure relief execution loop and the pressurization execution loop. The portable detection device is used for portable detection of the hydraulic system of the wind generating set.

Description

Technical Field

[0001] The utility model relates to a portable detection device for a hydraulic system of a wind power generator set. Background Art

[0002] For a long time, wind turbines have mostly adopted the corrective maintenance method. The disadvantage of this method is that when a wind turbine fails, it cannot promptly and accurately determine the cause of the failure. When a failure occurs, it needs to be returned to the workshop for maintenance. The process of downtime maintenance is bound to affect the power generation efficiency of the wind turbine. On-site maintenance is based on monitoring the status of the wind turbine during operation, reducing the probability of major accidents, improving the power generation efficiency of the equipment, and providing a more timely and accurate solution to find the cause of the failure to facilitate daily on-site maintenance. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a portable detection device for the hydraulic system of a wind turbine generator set.

[0004] The above purpose is achieved through the following technical solutions:

[0005] A portable detection device for the hydraulic system of a wind turbine generator set, comprising: a motor power supply circuit and a motor and hydraulic system test circuit, wherein the motor power supply circuit is a primary circuit, and the motor and hydraulic system test circuit is a secondary circuit;

[0006] The motor and hydraulic system test circuit includes a motor starting execution circuit and a control circuit. The motor starting execution circuit is connected in parallel with the control circuit. The control circuit includes a power supply module. The output end of the power supply module is connected in parallel with the motor starting control circuit, the pressure relief control circuit, the boost control circuit, the monitoring circuit, the pressure relief execution circuit and the boost execution circuit.

[0007] The portable detection device for the hydraulic system of a wind turbine generator set, the motor starting control circuit comprises a motor starting switch and a coil of a first intermediate relay connected in series.

[0008] The portable detection device for the hydraulic system of a wind turbine generator set, the pressure relief control circuit comprises a pressure relief switch and a coil of a second intermediate relay connected in series.

[0009] The portable detection device for the hydraulic system of a wind turbine generator set, the boost control circuit comprises a boost switch and a third intermediate relay coil connected in series.

[0010] The portable detection device for the hydraulic system of a wind turbine generator set, the monitoring circuit comprises a pressure switch and a digital voltmeter connected in series.

[0011] The portable detection device for the hydraulic system of a wind turbine generator set, the pressure relief execution circuit includes a normally open contact of a second intermediate relay and a pressure relief solenoid valve connected in series.

[0012] The portable detection device for the hydraulic system of a wind turbine generator set, the boost execution circuit comprises a normally open contact of a third intermediate relay and a boost solenoid valve connected in series.

[0013] The portable detection device for the hydraulic system of a wind turbine generator set, the motor starting execution circuit comprises a normally open contact of a first intermediate relay and an AC contactor coil connected in series. Beneficial Effects

[0014] 1. The utility model can conveniently detect the cause of the hydraulic system failure, and is convenient for on-site personnel to carry, so that existing failures can be checked and handled more promptly, saving more time and greatly improving work efficiency.

[0015] 2. The utility model can be conveniently carried while testing the working status of the hydraulic system, and each branch circuit has a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A circuit diagram of the utility model;

[0017] In the figure: Q1, motor starter; KM1, AC contactor; A, ammeter; M, motor; S1, power switch; U, power module; FU, fuse; S2, motor start switch; KA1, first intermediate relay; S3, pressure relief switch; KA2, second intermediate relay; S4, boost switch; KA3, third intermediate relay; P, pressure switch; V, digital voltmeter; YV1; pressure relief solenoid valve; YV2, boost solenoid valve. DETAILED DESCRIPTION

[0018] like Figure 1 As shown, a portable detection device for the hydraulic system of a wind turbine generator set comprises: a motor power supply circuit and a motor and hydraulic system test circuit, wherein the motor power supply circuit is a primary circuit, and the motor and hydraulic system test circuit is a secondary circuit;

[0019] The motor power supply circuit includes a 380V power connector, a motor starter Q1 and an AC contactor KM1;

[0020] The three-phase electricity of the 380V power connector is connected to the input end of the motor starter, the output end of the motor starter is connected to the input end of the AC contactor, and the output end of the AC contactor is connected to the three-phase electricity terminal of the motor;

[0021] Ammeter A is connected in series to each phase of the three-phase power supply to test the current;

[0022] The motor starter is a circuit breaker used to control the on and off of three-phase electricity. The three-phase electricity is supplied to the motor through the motor starter and AC contactor.

[0023] The motor and hydraulic system test circuit includes a motor starting execution circuit and a control circuit. The motor starting execution circuit is connected in parallel with the control circuit. The control circuit includes a power module U. The power module is a 230V to 24V power module. The output end of the power module is connected in parallel with the motor starting control circuit, the pressure relief control circuit, the boost control circuit, the monitoring circuit, the pressure relief execution circuit and the boost execution circuit.

[0024] The motor starting control circuit comprises a motor starting switch S2 and a coil of a first intermediate relay KA1 connected in series.

[0025] The pressure relief control circuit includes a pressure relief switch S3 and a coil of a second intermediate relay KA2 connected in series.

[0026] The boost control loop includes a boost switch S4 and a third intermediate relay KA3 coil connected in series.

[0027] The monitoring circuit comprises a pressure switch P and a digital voltmeter V connected in series.

[0028] The pressure relief execution circuit includes a normally open contact of a second intermediate relay and a pressure relief solenoid valve YV1 connected in series.

[0029] The boost execution circuit includes a normally open contact of a third intermediate relay and a boost solenoid valve YV2 connected in series.

[0030] The motor start execution circuit comprises a normally open contact of a first intermediate relay and an AC contactor coil connected in series.

[0031] Working principle: The detection device is placed in an insulating square housing to realize a portable device. When the motor needs to be started, the motor start switch is pressed, the normally open contact of the first intermediate relay is energized, the motor start execution circuit is energized, the coil of the AC contactor is energized, the normally open contact of the AC contactor connected to the motor power supply circuit is closed, the motor starter is closed, and the motor is energized smoothly. The ammeter monitors the current of each phase power supply at any time;

[0032] The monitoring circuit monitors the pressure of the hydraulic system and the voltage of the circuit. When performing a boost test, the boost switch is turned off, the coil of the third intermediate relay is energized, and the normally open contact of the third intermediate relay in the boost execution circuit is closed, so that the boost solenoid valve is energized to achieve boost;

[0033] When performing a pressure relief test, the pressure relief switch is closed, the coil of the second intermediate relay is energized, the normally open contact of the second intermediate relay in the pressure relief execution circuit is closed, and the pressure relief solenoid valve is energized to achieve pressure relief.

Claims

1. A portable detection device for the hydraulic system of a wind turbine generator set, characterized by: Its components include: a motor power supply circuit and a motor and hydraulic system test circuit, wherein the motor power supply circuit is a primary circuit and the motor and hydraulic system test circuit is a secondary circuit; The motor and hydraulic system test circuit includes a motor starting execution circuit and a control circuit. The motor starting execution circuit is connected in parallel with the control circuit. The control circuit includes a power supply module. The output end of the power supply module is connected in parallel with the motor starting control circuit, the pressure relief control circuit, the boost control circuit, the monitoring circuit, the pressure relief execution circuit and the boost execution circuit.

2. The portable detection device for the hydraulic system of a wind turbine generator set according to claim 1 is characterized in that: The motor starting control loop comprises a motor starting switch and a coil of a first intermediate relay connected in series.

3. The portable detection device for the hydraulic system of a wind turbine generator set according to claim 1 is characterized in that: The pressure relief control circuit comprises a pressure relief switch and a coil of a second intermediate relay connected in series.

4. The portable detection device for the hydraulic system of a wind turbine generator set according to claim 1 is characterized in that: The boost control loop comprises a boost switch and a third intermediate relay coil connected in series.

5. The portable detection device for the hydraulic system of a wind turbine generator set according to claim 1 is characterized in that: The monitoring circuit comprises a pressure switch and a digital voltmeter connected in series.

6. The portable detection device for the hydraulic system of a wind turbine generator set according to claim 1 is characterized in that: The pressure relief execution circuit includes a normally open contact of a second intermediate relay and a pressure relief solenoid valve connected in series.

7. The portable detection device for the hydraulic system of a wind turbine generator set according to claim 1 is characterized in that: The boost execution circuit comprises a normally open contact of a third intermediate relay and a boost solenoid valve connected in series.

8. The portable detection device for the hydraulic system of a wind turbine generator set according to claim 1 is characterized in that: The motor start execution circuit comprises a normally open contact of a first intermediate relay and an AC contactor coil connected in series.

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