Wind power hoisting rope winding and unwinding hydraulic system

Abstract

The utility model relates to the field of cable rope winding and unwinding power systems, in particular to a wind power hoisting rope winding and unwinding hydraulic system which comprises a rope winding and unwinding driving motor, a brake, a first oil supply path, a second oil supply path, an oil return path, a first hand-operated direction valve, a second hand-operated direction valve and an air cooler. According to the utility model, the hydraulic system is improved, the second pump body is independently adopted to supply oil to the second oil supply path, so that oil can be stably supplied to the brake, and when the brake does not need to supply oil, the second oil supply path is used for driving the air cooler and cooling all backflow hydraulic oil, so that the system can work for a long time; and the temperature of the oil liquid is not too high.

Description

Technical Field

[0001] The utility model relates to the field of wind rope retracting and releasing power systems, in particular to a wind power hoisting retracting and releasing rope hydraulic system. Background Art

[0002] Due to the limitations of installation height and weight of wind turbines, the hoisting process is greatly affected by wind force and wind speed. In order to ensure the safety and stability of the hoisting, it is necessary to install guy ropes on the hoisted objects.

[0003] The existing wind rope is retracted and released by manpower or pulley units. Due to the limitations of on-site construction conditions, the operation is difficult and there are great safety hazards. In order to solve the above problems, a wind turbine hoisting rope retraction and release hydraulic system is specially designed and developed to provide basic power for the retraction and release of the wind rope during wind turbine hoisting construction. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a wind power hoisting rope retracting and releasing hydraulic system.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] Wind power hoisting rope retracting and releasing hydraulic system, including:

[0007] A rope drive motor for driving the reel mechanism to rotate forward and reverse;

[0008] A brake for braking the reel mechanism;

[0009] A first oil supply circuit, a second oil supply circuit, an oil return circuit, a first manual reversing valve, a second manual reversing valve, and an air cooler;

[0010] The first oil supply route supplies oil to the first pump body, the first manual reversing valve is a three-position four-way reversing valve with an M-type mid-position function, the oil supply port of the first oil supply route is connected to the P interface of the first manual reversing valve, the T interface of the first manual reversing valve is connected to the oil return route, and the A and B interfaces of the first manual reversing valve are respectively connected to the retracting and releasing rope driving motor;

[0011] The second oil supply route supplies oil from the second pump body, the second manual reversing valve is a two-position four-way reversing valve, the oil supply port of the second oil supply route is connected to the P interface of the second manual reversing valve, the T interface of the second manual reversing valve is connected to the oil return route, and the A interface of the second manual reversing valve is connected to the oil supply interface of the brake;

[0012] The air cooler is arranged on the oil return line, the B interface of the second manual reversing valve is connected to the oil inlet of the motor of the air cooler, and the oil outlet of the motor of the air cooler is connected to the oil return line.

[0013] As a further description of the above technical solution:

[0014] The first pump body is a plunger pump, the second pump body is a gear pump, and both the first pump body and the second pump body are synchronously driven by a driver and a coupling.

[0015] As a further description of the above technical solution:

[0016] The driver is a single-cylinder engine.

[0017] As a further description of the above technical solution:

[0018] Also includes:

[0019] A hydraulic oil tank is used to supply oil to the first oil supply circuit and the second oil supply circuit and is connected to the oil outlet of the return oil circuit. A liquid level gauge, an air filter and a liquid level relay are installed on the hydraulic oil tank. The liquid level relay is used to transmit the liquid level signal of the hydraulic oil tank to the controller of the drive.

[0020] As a further description of the above technical solution:

[0021] A pressure monitoring module consisting of a pressure measuring pipeline, a pressure measuring joint, and a pressure gauge is installed at the A interface of the first manual reversing valve, the B interface of the first manual reversing valve, the first oil supply line, the second oil supply line, and the A interface of the second manual reversing valve.

[0022] As a further description of the above technical solution:

[0023] The first oil supply circuit is connected to a first overflow return oil circuit a having a first overflow valve a, the second oil supply circuit is connected to a first overflow return oil circuit b having a first overflow valve b, the A interface of the first manual reversing valve is connected to a third overflow return oil circuit having a third overflow valve, and the A interface of the second manual reversing valve is connected to a second overflow return oil circuit having a second overflow valve.

[0024] As a further description of the above technical solution:

[0025] A third one-way valve and an oil return filter are installed on the oil return line.

[0026] As a further description of the above technical solution:

[0027] A first one-way valve is installed on the first oil supply line, and a branch return oil line is connected to the B interface of the first manual reversing valve. A second one-way valve is arranged on the branch return oil line, and the second one-way valve allows the oil in the branch return oil line to flow toward the B interface of the first manual reversing valve.

[0028] As a further description of the above technical solution:

[0029] A fifth one-way valve is installed on the pipeline between the B interface of the second manual reversing valve and the oil inlet of the motor of the air cooler, a fourth one-way valve is connected to the pipeline between the A interface of the second manual reversing valve and the oil supply interface of the brake, a first fork in parallel with the fourth one-way valve is connected to the pipeline between the A interface of the second manual reversing valve and the oil supply interface of the brake, a first three-way flow valve is connected to the first fork, a bypass interface of the first three-way flow valve is connected to a second fork, and the second fork is connected to the B interface of the second manual reversing valve.

[0030] The utility model has the following beneficial effects:

[0031] 1. Compared with the prior art, the wind turbine hoisting rope retracting and releasing hydraulic system improves the hydraulic system and independently adopts a second pump body to supply oil to the second oil supply circuit, so that the brake can be stably supplied with oil. When the brake does not need oil supply, the second oil supply circuit is used to drive the air cooler to cool down all the refluxed hydraulic oil, so that the system can work for a long time and the oil temperature will not be too high. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the hydraulic system for wind power hoisting and retracting ropes proposed by the utility model.

[0033] Legend:

[0034] 1. Hydraulic oil tank; 2. Liquid level gauge; 3. Air filter; 4. Driver; 5. Coupling; 6. First pump body; 7. Liquid level relay; 8. Oil return filter; 9. Air cooler; 101. First overflow valve a; 102. First overflow valve b; 11. First non-return valve; 12. Pressure measuring joint; 13. Pressure measuring pipeline; 14. Pressure gauge; 15. First manual reversing valve; 16. Second non-return valve; 17. Second manual reversing valve; 18. First three-way flow valve; 19. Second overflow valve; 20. Third overflow valve; 21. Third non-return valve; 221. Fourth non-return valve; 222. Fifth non-return valve; 23. Second pump body; 24. Retracting and releasing rope drive motor; 25. Brake. DETAILED DESCRIPTION

[0035] Reference Figure 1 The wind power hoisting rope retracting and releasing hydraulic system provided by the utility model comprises a rope retracting and releasing driving motor 24 for driving the reel mechanism to rotate forward and reverse, and a brake 25 for braking the reel mechanism.

[0036] The retracting and releasing rope driving motor 24 is connected to the oil circuit in the forward direction to realize forward rotation, and is connected to the oil circuit in the reverse direction to realize reverse rotation. When the brake 25 is connected to the oil circuit, the reel mechanism is driven to brake.

[0037] The hydraulic system mainly includes: a first oil supply circuit, a second oil supply circuit, an oil return circuit, a first manual reversing valve 15 , a second manual reversing valve 17 , and an air cooler 9 .

[0038] Among them, the first oil supply circuit is supplied with oil by the first pump body 6, and the first manual reversing valve 15 is a three-position four-way reversing valve with an M-type mid-position function. When in the mid-position, the oil in the first oil supply circuit flows back to the oil return circuit, the oil supply port of the first oil supply circuit is connected to the P interface of the first manual reversing valve 15, the T interface of the first manual reversing valve 15 is connected to the oil return circuit, and the A and B interfaces of the first manual reversing valve 15 are respectively connected to the retracting and releasing rope driving motor 24.

[0039] The first manual reversing valve 15 can be manipulated to the left position, so that the P interface of the first manual reversing valve 15 connected to an oil supply circuit is communicated with the A interface of the first manual reversing valve 15, so as to realize forward oil supply, and the B interface of the first manual reversing valve 15 is communicated with the oil return circuit and the T interface of the first manual reversing valve 15, so as to drive the retracting and releasing rope driving motor 24 to rotate forward; conversely, the first manual reversing valve 15 can be manipulated to the right position, so that the P interface of the first manual reversing valve 15 connected to an oil supply circuit is communicated with the B interface of the first manual reversing valve 15, so as to realize reverse oil supply, and the A interface of the first manual reversing valve 15 is communicated with the oil return circuit and the T interface of the first manual reversing valve 15, so as to drive the retracting and releasing rope driving motor 24 to rotate reversely.

[0040] The second oil supply route is supplied with oil by the second pump body 23, the second manual reversing valve 17 is a two-position four-way reversing valve, the oil supply port of the second oil supply route is connected to the P interface of the second manual reversing valve 17, the T interface of the second manual reversing valve 17 is connected to the oil return route, the A interface of the second manual reversing valve 17 is connected to the oil supply interface of the brake 25, when the second manual reversing valve 17 is in the second position, the P interface of the second manual reversing valve 17 is connected to the B interface, and refluxes through the oil return route.

[0041] The air cooler 9 is arranged on the oil return line, and is used for cooling down all the returning hydraulic oil. The B interface of the second manual reversing valve 17 is connected to the oil inlet of the motor of the air cooler 9, and the oil outlet of the motor of the air cooler 9 is connected to the oil return line, so that the hydraulic oil flowing back from the B interface of the second manual reversing valve 17 drives the motor of the air cooler 9 to rotate, thereby cooling down all the returning hydraulic oil.

[0042] In one embodiment, the first pump body 6 is a plunger pump, which can provide relatively strong oil pressure, and the second pump body 23 is a gear pump, which has a simple structure and low cost. The first pump body 6 and the second pump body 23 are both synchronously driven by the driver 4 and the coupling 5, that is, a driver 4 and a coupling 5 are used to synchronously drive the first pump body 6 and the second pump body 23 to work, and the specific design can include a gear structure, a pulley structure, etc.

[0043] Driver 4 is a single-cylinder engine suitable for outdoor use.

[0044] In one embodiment, it also includes: a hydraulic oil tank 1, which is used to supply oil to the first oil supply circuit and the second oil supply circuit, that is, to supply oil to the oil inlets of the first pump body 6 and the second pump body 23, and is connected to the oil outlet of the return oil circuit to realize the circulation supply of the hydraulic oil. The hydraulic oil tank 1 is equipped with a liquid level gauge 2, an air filter 3, and a liquid level relay 7. The liquid level relay 7 is used to transmit the liquid level signal of the hydraulic oil tank 1 to the controller of the driver 4. When the liquid level relay 7 detects that the liquid level is low, the controller of the driver 4 makes the next response, which can be designed to stop working or alarm.

[0045] In one embodiment, it also includes: a pressure monitoring module composed of a pressure measuring pipeline 13, a pressure measuring joint 12, and a pressure gauge 14. The pressure monitoring modules are installed at the A interface of the first manual reversing valve 15, the B interface of the first manual reversing valve 15, the first oil supply line, the second oil supply line, and the A interface of the second manual reversing valve 17.

[0046] The pressure monitoring module monitors the oil pressure at various locations in real time to ensure stable operation of the system.

[0047] In one embodiment, the first oil supply circuit is connected to a first overflow return oil circuit a having a first overflow valve a101, the second oil supply circuit is connected to a first overflow return oil circuit b having a first overflow valve b102, the A interface of the first manual reversing valve 15 is connected to a third overflow return oil circuit having a third overflow valve 20, and the A interface of the second manual reversing valve 17 is connected to a second overflow return oil circuit having a second overflow valve 19.

[0048] The design of the above-mentioned multiple relief valves can make the oil pressure in the hydraulic system more stable.

[0049] In one embodiment, a third one-way valve 21 and an oil return filter 8 are installed on the oil return line. The oil return filter 8 is used to filter the hydraulic oil that flows back into the hydraulic oil tank 1 .

[0050] In one embodiment, a first one-way valve 11 is installed on the first oil supply line, the B interface of the first manual reversing valve 15 is connected to a branch return oil line, and a second one-way valve 16 is arranged on the branch return oil line. The second one-way valve 16 allows the oil in the branch return oil line to flow toward the B interface of the first manual reversing valve 15.

[0051] The design of the branch return oil circuit and the second one-way valve 16 can allow the rope-retracting driving motor 24 to reversely extract a portion of oil from the branch return oil circuit when driven by an external force, thereby preventing the rope-retracting driving motor 24 from entering air.

[0052] In one embodiment, a fifth one-way valve 222 is installed on the pipeline between the B interface of the second manual reversing valve 17 and the oil inlet of the motor of the air cooler 9, a fourth one-way valve 221 is connected to the pipeline between the A interface of the second manual reversing valve 17 and the oil supply interface of the brake 25, a first fork in parallel with the fourth one-way valve 221 is connected to the pipeline between the A interface of the second manual reversing valve 17 and the oil supply interface of the brake 25, a first three-way flow valve 18 is connected to the first fork, a bypass interface of the first three-way flow valve 18 is connected to a second fork, and the second fork is connected to the B interface of the second manual reversing valve 17.

[0053] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulic system for wind turbine hoisting retractable rope, comprising a retractable rope driving motor (24) for driving a reel mechanism to rotate forward and reverse, and a brake (25) for braking the reel mechanism, characterized in that: Also includes: A first oil supply circuit, a second oil supply circuit, an oil return circuit, a first manual reversing valve (15), a second manual reversing valve (17), and an air cooler (9); The first oil supply path is supplied with oil by the first pump body (6); the first manual reversing valve (15) is a three-position four-way reversing valve with an M-type mid-position function; the oil supply port of the first oil supply path is connected to the P interface of the first manual reversing valve (15); the T interface of the first manual reversing valve (15) is connected to the oil return path; and the A and B interfaces of the first manual reversing valve (15) are respectively connected to the rope retracting and releasing driving motor (24); The second oil supply circuit supplies oil through the second pump body (23); the second manual reversing valve (17) is a two-position four-way reversing valve; the oil supply port of the second oil supply circuit is connected to the P interface of the second manual reversing valve (17); the T interface of the second manual reversing valve (17) is connected to the oil return circuit; and the A interface of the second manual reversing valve (17) is connected to the oil supply interface of the brake (25); The air cooler (9) is arranged on the oil return line, the B interface of the second manual reversing valve (17) is connected to the oil inlet of the motor of the air cooler (9), and the oil outlet of the motor of the air cooler (9) is connected to the oil return line.

2. The hydraulic system for wind turbine hoisting and retracting rope according to claim 1 is characterized in that: The first pump body (6) is a plunger pump, the second pump body (23) is a gear pump, and the first pump body (6) and the second pump body (23) are both synchronously driven by a driver (4) and a coupling (5).

3. The hydraulic system for wind turbine hoisting and retracting rope according to claim 2 is characterized in that: The driver (4) is a single-cylinder engine.

4. The hydraulic system for wind turbine hoisting and retracting rope according to claim 2, characterized in that: Also includes: A hydraulic oil tank (1), the hydraulic oil tank (1) is used to supply oil to a first oil supply circuit and a second oil supply circuit, and is connected to an oil outlet of an oil return circuit; a liquid level meter (2), an air filter (3), and a liquid level relay (7) are installed on the hydraulic oil tank (1); the liquid level relay (7) is used to transmit a liquid level signal of the hydraulic oil tank (1) to a controller of a driver (4).

5. The hydraulic system for wind turbine hoisting and retracting rope according to claim 1, characterized in that: Also includes: A pressure monitoring module is composed of a pressure measuring pipeline (13), a pressure measuring joint (12), and a pressure gauge (14), wherein the pressure monitoring module is installed at the A interface of the first manual reversing valve (15), the B interface of the first manual reversing valve (15), the first oil supply line, the second oil supply line, and the A interface of the second manual reversing valve (17).

6. The hydraulic system for wind turbine hoisting and retracting rope according to claim 1 is characterized in that: The first oil supply line is connected to a first overflow return oil line a having a first overflow valve a (101), the second oil supply line is connected to a first overflow return oil line b having a first overflow valve b (102), the A interface of the first manual reversing valve (15) is connected to a third overflow return oil line having a third overflow valve (20), and the A interface of the second manual reversing valve (17) is connected to a second overflow return oil line having a second overflow valve (19).

7. The hydraulic system for wind turbine hoisting and retracting rope according to claim 1 is characterized in that: A third one-way valve (21) and an oil return filter (8) are installed on the oil return line.

8. The hydraulic system for wind turbine hoisting and retracting rope according to claim 6 is characterized in that: A first one-way valve (11) is installed on the first oil supply line, a branch return oil line is connected to the B interface of the first manual reversing valve (15), and a second one-way valve (16) is arranged on the branch return oil line. The second one-way valve (16) allows the oil in the branch return oil line to flow toward the B interface of the first manual reversing valve (15).

9. The hydraulic system for wind power hoisting and retracting rope according to claim 6, characterized in that; A fifth check valve (222) is installed on the pipeline between the B interface of the second manual reversing valve (17) and the oil inlet of the motor of the air cooler (9); a fourth check valve (221) is connected to the pipeline between the A interface of the second manual reversing valve (17) and the oil supply interface of the brake (25); a first fork in the pipeline between the A interface of the second manual reversing valve (17) and the oil supply interface of the brake (25) is connected to the first fork in the pipeline, which is connected to the first three-way flow valve (18); a bypass interface of the first three-way flow valve (18) is connected to a second fork; and the second fork is connected to the B interface of the second manual reversing valve (17).

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