Hydraulic platform and hydraulic system practical training platform

Abstract

The utility model provides a kind of hydraulic platform and hydraulic system practical training platform, the hydraulic platform includes yaw module, high-speed shaft module, wind wheel lock pin module, energy accumulator module, main module, oil tank assembly and motor pump group, the yaw module, the high-speed shaft module, the wind wheel lock pin module and the energy accumulator module are connected in the main module respectively, the import of the motor pump group is communicated with the oil tank assembly, the outlet of the motor pump group is communicated with the main module.The utility model's hydraulic platform and hydraulic system practical training platform originally highly integrated hydraulic system is scattered, valve in each module is placed separately, realize each module function by pipeline connection, and simulate failure early warning mode, so that learner is clear to failure form, reduce equipment failure, improve equipment maintenance efficiency.Hydraulic platform adopts visual interface, so that learner has a clear understanding of wind power brake system and hydraulic system.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of wind driven generators, especially relates to a hydraulic platform and hydraulic system practical training platform. BACKGROUND

[0002] The hydraulic braking system plays an important safety guarantee role in the wind driven generator set, with the increasing megawatt of the wind driven generator set, the requirement of the hydraulic braking system is higher, and the familiarity of the operating personnel to the hydraulic braking system also puts forward new challenges. UTILITY MODEL CONTENTS

[0003] The utility model solves the technical problem that the operating personnel directly operates the wind driven generator set to cause system failure and low maintenance efficiency, and provides a hydraulic platform and hydraulic system practical training platform.

[0004] The utility model solves the above technical problem through the following technical scheme:

[0005] The utility model provides a kind of hydraulic platform, it is characterized in that, it includes yaw module, high-speed shaft module, wind wheel lock pin module, energy accumulator module, main module, oil tank assembly and motor pump group, the yaw module, the high-speed shaft module, the wind wheel lock pin module and the energy accumulator module are connected to the main module respectively, the import of the motor pump group is communicated with the oil tank assembly, the outlet of the motor pump group is communicated with the main module;

[0006] The yaw module is used to control the clamping pressure of yaw brake clamp of the hydraulic platform;

[0007] The high-speed shaft module is used to control the pressure of main shaft brake clamp of the hydraulic platform;

[0008] The wind wheel lock pin module is used to control the pressure of wind wheel lock of the hydraulic platform;

[0009] The energy accumulator module is used to provide emergency energy storage oil supplement of the hydraulic platform;

[0010] The main module is used to filter oil of the hydraulic platform, detect the pressure of the hydraulic platform, control the opening and closing of oil drain oil circuit;

[0011] The oil tank assembly is used to store hydraulic oil of the hydraulic platform;

[0012] The motor pump group is used to provide power to the whole hydraulic platform.

[0013] Preferably, the yaw module comprises a first pressure sensor, a first pressure switch, a first shut-off valve, a second shut-off valve, a first check valve, a yaw back pressure valve, a yaw pressure relief valve, a yaw solenoid valve, the first shut-off valve is communicated with the first pressure sensor, the yaw back pressure valve, the yaw solenoid valve and the yaw pressure relief valve respectively, the other three ports of the yaw solenoid valve are communicated with the first pressure switch, the yaw back pressure valve and the first check valve respectively, the other three ports of the first check valve are communicated with the yaw pressure relief valve, the yaw back pressure valve and the second shut-off valve respectively, the other port of the yaw pressure relief valve is communicated with the outlet of the second shut-off valve, and the inlet of the second shut-off valve is communicated with the main module.

[0014] Preferably, the high-speed shaft module comprises a second pressure switch, a second check valve, a second pressure sensor, a first accumulator, a high-speed shaft solenoid valve, a pressure reducing valve and a third shut-off valve which are communicated in sequence, the second pressure switch is communicated with the first accumulator, the second check valve is communicated with the high-speed shaft solenoid valve, and the second check valve, the third check valve and the third shut-off valve are all communicated with the main module respectively.

[0015] Preferably, the wind wheel locking pin module comprises a first overflow valve, a first hydraulic control check valve, a second hydraulic control check valve, a first manual reversing valve, a second manual reversing valve, a fourth check valve and a fifth check valve, one port of the first overflow valve is communicated with the first hydraulic control check valve and the second hydraulic control check valve respectively, the first hydraulic control check valve, the first manual reversing valve and the fourth check valve are communicated in sequence, the second hydraulic control check valve, the second manual reversing valve and the fifth check valve are communicated in sequence, the first hydraulic control check valve and the second hydraulic control check valve are communicated through a pipeline, the first manual reversing valve and the second manual reversing valve are communicated through a pipeline, the fifth check valve is communicated with the other port of the first overflow valve, and the fourth check valve and the fifth check valve are communicated with the main module respectively.

[0016] Preferably, the accumulator module comprises a second accumulator and a first adapter block, the second accumulator is arranged on the first adapter block, and the first adapter block is communicated with the main module.

[0017] Preferably, the main module comprises a main valve block, a working oil circuit, a pressure gauge, a third pressure sensor, a sixth one-way valve, a seventh one-way valve, a filter assembly, a manual pump, a first throttle valve, a second throttle valve, a second overflow valve, the sixth one-way valve, the seventh one-way valve, the first throttle valve, the second throttle valve, the second overflow valve are all installed on the main valve block, the inlet of the main valve block is communicated with the outlet of the motor pump group, the outlets of the main valve block are respectively communicated with the yaw module, the high-speed shaft module, the wind wheel lock pin module, the energy accumulator module and the oil tank assembly, the inlet and the outlet of the filter assembly are respectively communicated with the outlet of the motor pump group and the inlet of the sixth one-way valve, the inlet and the outlet of the manual pump are respectively communicated with the oil tank assembly and the inlet of the seventh one-way valve, the outlet of the sixth one-way valve, the outlet of the seventh one-way valve, the third pressure sensor and the pressure gauge are all respectively communicated with the working oil circuit, the inlet and the outlet of the second overflow valve are respectively communicated with the oil tank assembly and the oil return port of the yaw module, the inlet and the outlet of the first throttle valve are respectively communicated with the oil tank assembly and the second energy accumulator, the inlet and the outlet of the second throttle valve are respectively communicated with the oil tank assembly and the working oil circuit.

[0018] Preferably, the oil tank assembly comprises an oil tank, an oil collecting disc, a liquid level meter, an air filter and a liquid temperature and liquid level switch, the oil collecting disc is arranged at the bottom of the oil tank, the liquid level meter is arranged on the oil tank and communicated with the oil tank, the air filter is arranged at the top of the oil tank and communicated with the oil tank, the liquid temperature and liquid level switch is arranged in the oil tank, and the oil tank is communicated with two oil return ports of the main module.

[0019] Preferably, the motor pump group comprises a motor, a bell-shaped cover shaft coupling and a gear pump, the bell-shaped cover shaft coupling is connected with the motor and the gear pump respectively, so that the motor and the gear pump are drivingly connected, and the oil suction port and the oil pressure port of the gear pump are respectively communicated with the oil tank assembly and the oil inlet of the main module.

[0020] Preferably, the hydraulic platform further comprises a wiring terminal box, and the wire harnesses of the electrical elements on the yaw module, the high-speed shaft module, the wind wheel lock pin module, the main module and the oil tank assembly are respectively connected to the external interfaces in the wiring terminal box.

[0021] The utility model also provides a hydraulic system practical training platform, its characteristics in on, it includes the hydraulic platform as the above.

[0022] On the basis of conforming to the common sense in the art, the above-mentioned preferred conditions can be combined arbitrarily, that is, the preferred examples of the utility model are obtained.

[0023] The positive progress effect of the utility model lies in: in the utility model, the hydraulic platform and the hydraulic system practical training platform disperse the originally highly integrated hydraulic system, place the valve parts in each module separately, realize the functions of each module through pipeline connection, simulate the fault early warning mode, let the learner know the fault form clearly, reduce the equipment failure, and improve the equipment maintenance efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the structure schematic view of the utility model hydraulic platform.

[0025] Figure 2 It is the principle view of the utility model hydraulic platform.

[0026] Figure 3 It is the principle view of the utility model main module.

[0027] Figure 4 It is the structure schematic view of the utility model yaw module.

[0028] Figure 5 It is the principle view of the utility model yaw module.

[0029] Figure 6 It is the structure schematic view of the utility model high speed shaft module.

[0030] Figure 7 It is the principle view of the utility model high speed shaft module.

[0031] Figure 8 It is the structure schematic view of the utility model wind wheel lock pin module.

[0032] Figure 9 It is the principle view of the utility model wind wheel lock pin module.

[0033] Figure 10 It is the principle view of the utility model oil tank assembly.

[0034] Figure 11 It is the principle view of the utility model filter assembly.

[0035] BRIEF DESCRIPTION OF DRAWINGS

[0036] Motor pump group 1

[0037] Oil tank assembly 2

[0038] Oil tank 21

[0039] Oil collecting disc 22

[0040] Liquid level meter 23

[0041] Air filter 24

[0042] Liquid level switch 25

[0043] Accumulator module 3

[0044] Second accumulator 3131

[0045] Main module 4

[0046] Pressure gauge 41

[0047] Fifth pressure tap 410

[0048] Third pressure sensor 42

[0049] Sixth check valve 43

[0050] Seventh check valve 44

[0051] First restrictor valve 45

[0052] Second spill valve 46

[0053] Second restrictor valve 47

[0054] Filter assembly 48

[0055] Filter 481

[0056] Filter check valve 482

[0057] Pressure differential transmitter 483

[0058] Hand pump 49

[0059] Yaw module 5

[0060] First pressure tap 50

[0061] First pressure sensor 51

[0062] First pressure switch 52

[0063] First shut-off valve 53

[0064] Yaw solenoid valve 54

[0065] Yaw back pressure valve 55

[0066] Yaw pressure relief valve 56

[0067] First check valve 57

[0068] Second shut-off valve 58

[0069] First damper plug 59

[0070] Yaw brake caliper 500

[0071] High speed shaft module 6

[0072] One-way valve 60

[0073] Second pressure switch 61

[0074] Second pressure sensor 62

[0075] First accumulator 63

[0076] High-speed shaft electromagnetic valve 64

[0077] Pressure reducing valve 65

[0078] Third stop valve 66

[0079] Third one-way valve 67

[0080] Second one-way valve 68

[0081] One-way valve two 69

[0082] High-speed shaft brake caliper 600

[0083] Second pressure tapping 601

[0084] Second damping plug 602

[0085] Wind wheel locking pin module 7

[0086] First overflow valve 71

[0087] First hydraulic control one-way valve 72

[0088] Second hydraulic control one-way valve 73

[0089] First manual reversing valve 74

[0090] Second manual reversing valve 75

[0091] Fourth one-way valve 76

[0092] Fifth one-way valve 77

[0093] Third pressure tapping 78

[0094] Fourth pressure tapping 79

[0095] External interface 8

[0096] Wind wheel locking pin 9 DETAILED DESCRIPTION

[0097] The utility model will be more clearly and completely explained by the way of embodiment and in connection with the drawings, but it will not limit the utility model in the embodiment range.

[0098] The utility model discloses a kind of hydraulic platforms, such as Figures 1-11As shown, it comprises a yaw module 5, a high-speed shaft module 6, a wind wheel lock pin module 7, an accumulator module 3, a main module 4, an oil tank assembly 2 and a motor pump group 1, the yaw module 5, the high-speed shaft module 6, the wind wheel lock pin module 7 and the accumulator module 3 are connected to the main module 4 respectively, the inlet of the motor pump group 1 communicates with the oil tank assembly 2, and the outlet of the motor pump group 1 communicates with the main module 4;

[0099] The yaw module 5 is used for controlling the clamping pressure of the yaw brake clamp 500 of the hydraulic platform;

[0100] The high-speed shaft module 6 is used for controlling the pressure of the main shaft brake clamp of the hydraulic platform;

[0101] The wind wheel lock pin module 7 is used for controlling the pressure of the wind wheel lock of the hydraulic platform;

[0102] The accumulator module 3 is used for providing emergency energy storage oil supplement of the hydraulic platform;

[0103] The main module 4 is used for filtering the oil of the hydraulic platform, detecting the pressure of the hydraulic platform, and controlling the opening and closing of the oil drain oil way;

[0104] The oil tank assembly 2 is used for storing the hydraulic oil of the hydraulic platform;

[0105] The motor pump group 1 is used for providing power to the whole hydraulic platform.

[0106] Specifically, the inlet of the oil supply motor pump group 1 communicates with the oil tank assembly 2, and the outlet of the oil supply motor pump group 1 communicates with the valve group of the main module 4. The oil in the oil tank assembly 2 will pass through the oil supply motor pump group 1 and then pass through the valve group of the main module 4, and the valve group is internally provided with a sixth one-way valve 43, which can effectively prevent the reverse backflow of the oil in the power device from damaging the oil supply motor pump group 1, thereby improving the reliability and safety of the power device.

[0107] The yaw module 5 is used for controlling the clamping pressure of the yaw brake clamp 500, and different clamping pressures are provided during yaw clamping, half yaw and cable release.

[0108] The high-speed shaft module 6 is used for controlling the pressure of the main shaft brake clamp, and the clamping and loosening of the main shaft are realized by control.

[0109] The wind wheel lock pin module 7 is used for controlling the pressure of the wind wheel lock, and the extension and retraction of the wind wheel lock pin 9 are realized by control.

[0110] The accumulator module 3 can simulate the fault condition of the second accumulator 31 through the electromagnetic valve, and is used for providing emergency energy storage oil supplement of the hydraulic system to protect the equipment from impact.

[0111] The main module 4 can filter the oil in the hydraulic system, provide pressure feedback of the hydraulic unit, switch on the oil drain oil way and provide the highest pressure safety protection.

[0112] The oil tank assembly 2 is used to store the hydraulic oil of the hydraulic system, and collect the hydraulic oil flowing out during disassembly and maintenance.

[0113] The motor pump set 1 is used to provide power to the entire hydraulic system. The suction port and the pressure port of the gear pump of the motor pump set 1 are connected to the oil tank assembly 2 and the main valve block oil inlet respectively through oil pipes.

[0114] In the embodiment, the yaw module 5 comprises a first pressure sensor 51, a first pressure switch 52, a first stop valve 53, a second stop valve 58, a first check valve 57, a yaw back pressure valve 55, a yaw pressure relief valve 56, and a yaw electromagnetic valve 54. The first stop valve 53 is respectively connected to the first pressure sensor 51, the yaw back pressure valve 55, the yaw electromagnetic valve 54, and the yaw pressure relief valve 56. The other three ports of the yaw electromagnetic valve 54 are respectively connected to the first pressure switch 52, the yaw back pressure valve 55, and the first check valve 57. The other three ports of the first check valve 57 are respectively connected to the yaw pressure relief valve 56, the yaw back pressure valve 55, and the second stop valve 58. The other port of the yaw pressure relief valve 56 is connected to the outlet of the second stop valve 58, and the inlet of the second stop valve 58 is connected to the main module 4.

[0115] Specifically, each valve of the yaw module 5 is separately installed on a rectangularly arranged adapter block, and each adapter block is connected to the outlet of the main valve block through an oil pipe. The yaw module 5 can realize yaw pressure maintaining through the first check valve 57, control the on-off of yaw oil inlet through the second stop valve 58, control the flow of yaw oil inlet through the first damping plug 59, control the switching of yaw clamping and half yaw through the yaw electromagnetic valve 54, control the size of half yaw residual pressure through the yaw back pressure valve 55, control the pressure release of yaw cable release through the yaw pressure relief valve 56, and realize manual pressure relief during maintenance through the first stop valve 53. The first pressure switch 52 is used for yaw residual pressure alarm, and the first pressure connector 50 is used for measuring yaw pressure.

[0116] The yaw brake module 5 is used to realize the overload protection of the yaw brake system of the wind turbine generator unit and drive the execution mechanism of the yaw brake. The power device can provide a stable and safe power source for the yaw brake system of the wind turbine generator unit, so that the yaw brake system of the wind turbine generator unit can complete the related work more accurately, conveniently and stably.

[0117] In the embodiment, the high-speed shaft module 6 comprises a second pressure switch 61, a second check valve 68, and a second pressure sensor 62, a first accumulator 63, a high-speed shaft electromagnetic valve 64, a pressure reducing valve 65, a third stop valve 66, and a third check valve 67 connected in sequence. The second pressure switch 61 is connected to the first accumulator 63, the second check valve 68 is connected to the high-speed shaft electromagnetic valve 64, and the second check valve 68, the third check valve 67, and the third stop valve 66 are all connected to the main module 4.

[0118] Specifically, the high-speed shaft module 6 can include a pressure reducing valve 65, both ends of which are communicated with the third one-way valve 67 at the pump outlet and the oil inlet of the high-speed shaft electromagnetic valve 64, respectively, and the pressure reducing valve 65 can ensure that the pressure entering the high-speed shaft brake system is always 125 bar. The high-speed shaft brake system of the wind turbine set is mainly used as a high-speed shaft brake pressure reducing valve 65 during operation, which can effectively ensure that the main shaft brake locking is not too large, prevent the system pressure from being too high, and greatly increase the safety of the high-speed shaft brake system of the wind turbine set.

[0119] The high-speed shaft module 6 can be used as a high-speed shaft brake pressure maintaining valve through the third one-way valve 67; the second one-way valve 68 is used to prevent other backflow from flowing to the high-speed shaft brake caliper, causing the high-speed brake pressure to rise; the third stop valve 66 controls the on-off of the high-speed brake oil inlet; the second damping plug 602 controls the flow of the high-speed brake oil inlet; the pressure reducing valve 65 controls the pressure of the high-speed brake oil inlet; the one-way valve two 69 is used as a high-speed brake pressure maintaining valve; the high-speed shaft electromagnetic valve 64 controls the switching of the high-speed shaft brake caliper 600 clamping and loosening; the one-way valve one 60 is used for a quick backflow passage; the second pressure switch 61 is used for alarm when the high-speed brake pressure exceeds 10 bar during normal operation; the first accumulator 63 is used for high-speed brake pressure maintaining oil supplement; the second pressure measuring connector 601 is used for measuring the high-speed brake pressure. The various valve parts of the high-speed shaft module 6 are respectively installed on the rectangularly arranged adapter blocks, and the various adapter blocks are connected to the outlet of the main valve block by oil pipes;

[0120] The overload protection of the high-speed shaft brake system of the wind turbine set and the driving of the high-speed shaft brake actuator are realized through the control of the high-speed shaft module 6, so that the power device can provide a stable and safe power source for the high-speed shaft brake system of the wind turbine set, and the high-speed shaft brake system of the wind turbine set can more accurately, conveniently and stably complete the related work.

[0121] In the embodiment, the wind wheel locking pin module 7 includes a first overflow valve 71, a first hydraulic control one-way valve 72, a second hydraulic control one-way valve 73, a first manual reversing valve 74, a second manual reversing valve 75, a fourth one-way valve 76 and a fifth one-way valve 77, one port of the first overflow valve 71 is communicated with the first hydraulic control one-way valve 72 and the second hydraulic control one-way valve 73, respectively, the first hydraulic control one-way valve 72, the first manual reversing valve 74 and the fourth one-way valve 76 are communicated in sequence, the second hydraulic control one-way valve 73, the second manual reversing valve 75 and the fifth one-way valve 77 are communicated in sequence, the first hydraulic control one-way valve 72 and the second hydraulic control one-way valve 73 are communicated through a pipeline, the first manual reversing valve 74 and the second manual reversing valve 75 are communicated through a pipeline, the fifth one-way valve 77 is communicated with the other port of the first overflow valve 71, and the fourth one-way valve 76 and the fifth one-way valve 77 are respectively communicated with the main module 4.

[0122] Specifically, the wind wheel locking pin module 7 can be pressurized by the fifth one-way valve 77, the first manual reversing valve 74 and the second manual reversing valve 75 control the extension and retraction of the wind wheel locking pin 9; the first hydraulic control one-way valve 72 and the second hydraulic control one-way valve 73 are pressurized; the first overflow valve 71 controls the pressure when the wind wheel locking pin 9 retracts; the fourth one-way valve 76 prevents the oil in other circuits from flowing back to the wind wheel locking pin 9, and the third pressure measuring connector 78 measures the extension pressure of the wind wheel locking pin 9; the fourth pressure measuring connector 79 measures the retraction pressure of the wind wheel locking pin 9. The various valve parts of the wind wheel locking pin module 7 are separately installed on the rectangularly arranged adapter blocks, and each adapter block is connected to the outlet of the main valve block by an oil pipe.

[0123] The over-load protection and the driving locking pin locking execution mechanism of the wind turbine locking pin brake system are realized by the control of the wind wheel locking pin module 7. The power device can provide a stable and safe power source for the wind turbine locking pin locking system, so that the wind turbine locking pin locking system can more accurately, conveniently and stably complete the related work.

[0124] In the embodiment, the accumulator module 3 includes a second accumulator 31 and a first adapter block, the second accumulator 31 is arranged on the first adapter block, and the first adapter block is connected to the main module 4.

[0125] Specifically, the accumulator of the accumulator module 3 is installed on the first adapter block, which is connected to the outlet of the main valve block by an oil pipe. The second accumulator 31 is connected to the working oil circuit. When the motor pump of the motor pump set 1 is running, the power device increases the pressure instantaneously, that is, the oil pressure in the working oil circuit instantaneously increases, and the second accumulator 31 can absorb part of the oil to ensure the stable and normal operation of the power device. When the motor pump is powered off, the second accumulator 31 can provide pressure oil for the high-speed spindle control circuit to ensure that the power device can continue to stably provide power to the execution mechanism and pressurize the wind turbine high-speed shaft brake system, while absorbing the pulsation of the wind turbine high-speed shaft brake system. The stability and safety of the wind turbine high-speed shaft brake system are ensured. At the same time, the accumulator module 3 can work long-term in harsh environments and has high reliability. The second accumulator 31 is located at the outlet of the sixth one-way valve 43, effectively preventing the second accumulator 31 from backflowing to the oil tank assembly 2. The second accumulator 31 in the accumulator module 3 can provide pressure oil for the circuits of the yaw module 5, the high-speed shaft module 6 and the wind wheel locking pin module 7 under the condition that the motor pump is powered off, pressurize the system, absorb the pulsation of the system, work long-term in harsh environments, have high reliability, and ensure the stability and safety of the power device.

[0126] In the embodiment, the main module 4 comprises a main valve block, a working oil circuit, a pressure gauge 41, a third pressure sensor 42, a sixth one-way valve 43, a seventh one-way valve 44, a filter assembly 48, a manual pump 49, a first throttle valve 45, a second throttle valve 47, and a second overflow valve 46. The sixth one-way valve 43, the seventh one-way valve 44, the first throttle valve 45, the second throttle valve 47, and the second overflow valve 46 are all mounted on the main valve block. The inlet of the main valve block is communicated with the outlet of the motor pump set 1. The outlets of the main valve block are respectively communicated with the yaw brake module 5, the high-speed shaft module 6, the wind wheel lock pin module 7, the energy accumulator module 3, and the oil tank assembly 2. The inlet and the outlet of the filter assembly 48 are respectively communicated with the outlet of the motor pump set 1 and the inlet of the sixth one-way valve 43. The inlet and the outlet of the manual pump 49 are respectively communicated with the oil tank assembly 2 and the inlet of the seventh one-way valve 44. The outlet of the sixth one-way valve 43, the outlet of the seventh one-way valve 44, the third pressure sensor 42, and the pressure gauge 41 are all respectively communicated with the working oil circuit. The inlet and the outlet of the second overflow valve 46 are respectively communicated with the oil tank assembly 2 and the oil return port of the yaw brake module 5. The inlet and the outlet of the first throttle valve 45 are respectively communicated with the oil tank assembly 2 and the second accumulator 31. The inlet and the outlet of the second throttle valve 47 are respectively communicated with the working oil circuit of the oil tank assembly 2.

[0127] Specifically, the main module 4 comprises the filter assembly 48. The filter assembly 48 comprises a differential pressure transmitter 483, a filter 481, and a filter one-way valve 482. The filter 481 is respectively communicated between the sixth one-way valve 43 and the outlet of the oil-supplying motor pump, so as to ensure the cleanliness of the system oil. When the filter 481 is blocked, the filter one-way valve 482 ensures the flow of the oil, and the differential pressure transmitter 483 sends a blocking signal and an alarm feedback. By using the above structure, the filter 481 can effectively prevent large-diameter solid particles from entering the system to cause oil circuit blockage or valve sticking and other failures, so as to ensure the safety of the power device and prolong the service life. When the filter 481 is blocked, the filter one-way valve 482 can send a signal and an alarm feedback in time for processing and maintenance.

[0128] The sixth one-way valve 43 prevents the oil from flowing back into the gear pump to cause damage due to the reverse rotation of the pump and the motor. The first throttle valve 45 controls the on-off of the oil into and out of the second accumulator 31. The fifth pressure measuring connector 410 measures the pressure of the main system circuit. The second throttle valve 47 is closed, so as to release pressure during maintenance. The second overflow valve 46 adjusts the system pressure and opens the overflow as a safety valve when the system pressure is too large.

[0129] The valve group of the main module 4 serves as the oil supply circuit of the main system, and supplies pressure oil to the yaw brake module 5, the high-speed shaft module 6, and the wind wheel lock pin module 7. The operation is simple and convenient, and the maintenance is easy.

[0130] The second throttle valve 47 is communicated with the oil tank assembly 2. The second throttle valve 47 can control the action speed of the oil return in the power device, so as to ensure the stability and safety of the power device.

[0131] The main module 4 can include a second overflow valve 46, both ends of the second overflow valve 46 are communicated with the oil tank assembly 2 and the oil return port of the yaw brake unit. The second overflow valve 46 can be set to an overflow pressure of 200 bar, and the yaw brake system of the wind turbine generator set is mainly used as a back pressure valve during operation, which can effectively ensure that there is always a pressure of 200 bar in the yaw brake system, thereby greatly increasing the safety of the yaw brake system of the wind turbine generator set.

[0132] The power device includes a second overflow valve 46, both ends of the second overflow valve 46 are communicated with the oil tank 21 and the outlet of the oil supply motor pump, and is used as a system safety valve to protect the power device. By integrating the yaw module 5, the high-speed shaft module 6, and the wind wheel locking pin module 7, the safety of the power device is increased. The power device further includes a manual pump 49, an inlet of the manual pump 49 is communicated with the oil tank 21, and an outlet of the manual pump 49 is communicated with the oil pressure path, i.e., the outlet of the seventh one-way valve 44. By manually pressing the power device through the manual pump 49, power is provided, and an emergency function is achieved. The power device further includes a seventh one-way valve 44, both ends of the seventh one-way valve 44 are communicated with the manual pump 49 and the main oil inlet circuit of the working oil path. By the seventh one-way valve 44, the reverse flow of oil in the power device is prevented from damaging the manual pump 49, and the reliability and safety of the power device are improved.

[0133] In order to facilitate pressure detection of the working oil path, the main module 4 valve group includes a pressure gauge 41 and a third pressure sensor 42, and the third pressure sensor 42 and the pressure gauge 41 are connected to the working oil path. The pressure gauge 41 is used to display the pressure of the working oil path on site, so that the staff can control according to the pressure condition, thereby ensuring the safety and stability of the power device. The third pressure sensor 42 can realize full-process and remote monitoring of the pressure of the working oil path.

[0134] In the hydraulic platform, the main module 4 includes a third pressure sensor 42 and a pressure gauge 41; the yaw brake module 5 includes a first pressure switch 52 and a first pressure sensor 51; the high-speed shaft module 6 includes a second pressure switch 61 and a second pressure sensor 62. The pressure gauge 41, the first pressure switch 52, the second pressure switch 61, the first pressure sensor 51, the second pressure sensor 62, and the third pressure sensor 42 are all connected to the working oil path.

[0135] The pressure value of the main oil path of the working oil path of the main module 4 is fed back to the ground main control system in time through the third pressure sensor 42, and the staff can monitor the running state of the main module 4 in real time.

[0136] When the yaw brake module 5 circuit yaw residual pressure is greater than the first pressure switch 52 set value 30bar, the first pressure switch 52 opens the alarm;

[0137] When the high-speed shaft module 6 circuit normal operation high brake pressure value is greater than the second pressure switch 61 set value 10bar, the second pressure switch 61 opens the alarm;

[0138] When the return oil circuit pressure value is less than the first pressure sensor 51 set value, the first pressure sensor 51 output signal, control the wind turbine unit to stop, when the return oil circuit pressure value is less than the second pressure sensor 62 set value, control the wind turbine unit to stop.

[0139] The above structure, through the pressure gauge 41 for on-site display pressure, so that the staff according to the pressure situation control, ensure the safety and stability of the power device.

[0140] In addition, the pressure detected by the pressure switch can realize the whole process and remote monitoring of the pressure of the power device.

[0141] The main module 4 includes the fifth pressure measuring connector 410; the yaw brake module 5 includes the first pressure measuring connector 50; the high-speed shaft module 6 includes the second pressure measuring connector 601; the wind wheel lock pin module 7 includes the third pressure measuring connector 78 and the fourth pressure measuring connector 79, each pressure measuring connector is communicated with the working oil circuit. Through each pressure measuring connector, on-site pressure measurement can be realized, and the safety of the power device is ensured.

[0142] In the embodiment, the oil tank assembly 2 includes an oil tank 21, an oil collecting disc 22, a liquid level gauge 23, an air filter 24, and a liquid temperature and liquid level switch 25. The oil collecting disc 22 is arranged at the bottom of the oil tank 21. The liquid level gauge 23 is arranged on the oil tank 21 and communicated with the inside of the oil tank 21. The air filter 24 is arranged at the top of the oil tank 21 and communicated with the inside of the oil tank 21. The liquid temperature and liquid level switch 25 is arranged in the oil tank 21. The oil tank 21 is communicated with the two return oil ports of the main module 4.

[0143] The side wall of the oil tank assembly 2 is provided with the liquid level gauge 23, which is communicated with the inside of the oil tank 21. The above structure can detect the liquid level of the oil tank 21, and the staff can directly see the height of the oil liquid, thereby improving the safety and stability of the power device.

[0144] The top of the oil tank 21 is provided with the air filter 24, which is communicated with the inside of the oil tank assembly 2. The above structure realizes the entry of gas into the oil tank 21 through the air filter 24, effectively prevents large particles from entering the power device, ensures the safety of the power device, and effectively prevents large particles from entering the oil liquid, thereby ensuring the safety of the wind turbine unit integrated brake hydraulic unit.

[0145] The heater group is installed on the side wall of the oil tank 21, the heating end is completely immersed in the oil, and the heater cable is connected in the terminal box.

[0146] In the embodiment, the motor pump group 1 comprises a motor, a bell-shaped coupling and a gear pump, the bell-shaped coupling is connected with the motor and the gear pump respectively, so that the motor and the gear pump are in driving connection, and the oil suction port and the oil discharge port of the gear pump are communicated with the oil tank assembly 2 and the oil inlet of the main module 4 respectively.

[0147] Specifically, the motor drives the gear pump to operate through the bell-shaped coupling, the transmission efficiency loss is small, and the service life is long.

[0148] In the embodiment, the hydraulic platform further comprises a terminal box, and the wire harnesses of the electrical elements of the yaw module 5, the high-speed shaft module 6, the wind wheel lock pin module 7, the main module 4 and the oil tank assembly 2 are connected to the external interfaces 8 in the terminal box respectively.

[0149] Specifically, the terminal box connects the wire harnesses of all the electrical elements on the yaw module 5, the high-speed shaft module 6, the wind wheel lock pin module 7, the main module 4 and the oil tank assembly 2 to the terminals in the terminal box, as the external interfaces 8 of the hydraulic unit, which is convenient for the user to uniformly dock. In addition, the shielding layers of all the wire harnesses are connected with the terminal box, so that the wire harnesses of all the electrical elements can be grounded.

[0150] The utility model further discloses a hydraulic system practical training platform which comprises the above hydraulic platform.

[0151] The hydraulic system practical training platform can provide stable and safe power sources for the yaw brake module 5, the high-speed shaft module 6 and the wind wheel lock pin module 7 of the wind turbine generator set through the power device, so that the yaw brake actuating mechanism, the high-speed shaft brake actuating mechanism and the wind wheel rotor locking pin actuating mechanism can more accurately, conveniently and stably complete the related work.

[0152] Although the specific embodiments of the utility model are described above, those skilled in the art should understand that this is only an example, the protection scope of the utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the utility model, and these changes and modifications all fall within the protection scope of the utility model.

Claims

1. A hydraulic platform characterized by: The hydraulic platform comprises a yaw module, a high-speed shaft module, a wind wheel lock pin module, an accumulator module, a main module, an oil tank assembly and a motor pump group, the yaw module, the high-speed shaft module, the wind wheel lock pin module and the accumulator module are connected to the main module respectively, an inlet of the motor pump group is communicated with the oil tank assembly, and an outlet of the motor pump group is communicated with the main module. The yaw module is used for controlling the clamping pressure of yaw brake clamps of the hydraulic platform. The high-speed shaft module is used for controlling the pressure of main shaft brake clamps of the hydraulic platform. The wind wheel lock pin module is used for controlling the pressure of a wind wheel lock of the hydraulic platform. The accumulator module is used for providing emergency energy storage oil supplement of the hydraulic platform. The main module is used for filtering oil liquid of the hydraulic platform, detecting the pressure of the hydraulic platform and controlling the opening and closing of a drain oil path. The oil tank assembly is used for storing hydraulic oil of the hydraulic platform. The motor pump group is used for providing power to the whole hydraulic platform.

2. The hydraulic platform of claim 1, wherein: The yaw module comprises a first pressure sensor, a first pressure switch, a first stop valve, a second stop valve, a first check valve, a yaw back pressure valve, a yaw pressure relief valve and a yaw electromagnetic valve, the first stop valve is communicated with the first pressure sensor, the yaw back pressure valve, the yaw electromagnetic valve and the yaw pressure relief valve respectively, the other three ports of the yaw electromagnetic valve are communicated with the first pressure switch, the yaw back pressure valve and the first check valve respectively, the other three ports of the first check valve are communicated with the yaw pressure relief valve, the yaw back pressure valve and the second stop valve respectively, the other port of the yaw pressure relief valve is communicated with the outlet of the second stop valve, and the inlet of the second stop valve is communicated with the main module.

3. The hydraulic platform of claim 1, wherein: The high-speed shaft module comprises a second pressure switch, a second check valve and a second pressure sensor, a first accumulator, a high-speed shaft electromagnetic valve, a pressure reducing valve, a third stop valve and a third check valve which are communicated in sequence, the second pressure switch is communicated with the first accumulator, the second check valve is communicated with the high-speed shaft electromagnetic valve, and the second check valve, the third check valve and the third stop valve are communicated with the main module respectively.

4. The hydraulic platform of claim 1, wherein: The wind wheel lock pin module comprises a first overflow valve, a first hydraulic control check valve, a second hydraulic control check valve, a first manual reversing valve, a second manual reversing valve, a fourth check valve and a fifth check valve, one port of the first overflow valve is communicated with the first hydraulic control check valve and the second hydraulic control check valve respectively, the first hydraulic control check valve, the first manual reversing valve and the fourth check valve are communicated in sequence, the second hydraulic control check valve, the second manual reversing valve and the fifth check valve are communicated in sequence, the first hydraulic control check valve and the second hydraulic control check valve are communicated through a pipeline, the first manual reversing valve and the second manual reversing valve are communicated through a pipeline, the fifth check valve is communicated with the other port of the first overflow valve, and the fourth check valve and the fifth check valve are communicated with the main module respectively.

5. The hydraulic platform of claim 1, wherein: The accumulator module comprises a second accumulator and a first adapter block, the second accumulator is arranged on the first adapter block, and the first adapter block is communicated with the main module.

6. The hydraulic platform of claim 5, wherein: The main module comprises a main valve block, a working oil circuit, a pressure gauge, a third pressure sensor, a sixth one-way valve, a seventh one-way valve, a filter assembly, a manual pump, a first throttle valve, a second throttle valve and a second overflow valve, the sixth one-way valve, the seventh one-way valve, the first throttle valve, the second throttle valve and the second overflow valve are all installed on the main valve block, an inlet of the main valve block is communicated with an outlet of the motor pump group, outlets of the main valve block are respectively communicated with the yaw module, the high-speed shaft module, the wind wheel lock pin module, the accumulator module and the oil tank assembly, an inlet and an outlet of the filter assembly are respectively communicated with the outlet of the motor pump group and an inlet of the sixth one-way valve, an inlet and an outlet of the manual pump are respectively communicated with the oil tank assembly and an inlet of the seventh one-way valve, an outlet of the sixth one-way valve, an outlet of the seventh one-way valve, the third pressure sensor and the pressure gauge are all respectively communicated with the working oil circuit, an inlet and an outlet of the second overflow valve are respectively communicated with the oil tank assembly and an oil return port of the yaw module, an inlet and an outlet of the first throttle valve are respectively communicated with the oil tank assembly and the second accumulator, and an inlet and an outlet of the second throttle valve are respectively communicated with the oil tank assembly and the working oil circuit.

7. The hydraulic platform of claim 1, wherein: The oil tank assembly comprises an oil tank, an oil collecting disc, a liquid level meter, an air filter and a liquid temperature and liquid level switch, the oil collecting disc is arranged at the bottom of the oil tank, the liquid level meter is arranged on the oil tank and communicated with the oil tank, the air filter is arranged at the top of the oil tank and communicated with the oil tank, and the liquid temperature and liquid level switch is arranged in the oil tank, and the oil tank is communicated with two oil return ports of the main module.

8. The hydraulic platform of claim 1, wherein: The motor pump group comprises a motor, a bell-shaped cover shaft coupling and a gear pump, the bell-shaped cover shaft coupling connects the motor and the gear pump respectively, so that the motor and the gear pump are drivingly connected, and an oil suction port and an oil pressure port of the gear pump are respectively communicated with the oil tank assembly and an oil inlet of the main module.

9. The hydraulic platform of claim 1, wherein: The hydraulic platform further comprises a wiring terminal box, and wire harnesses of electrical elements on the yaw module, the high-speed shaft module, the wind wheel lock pin module, the main module and the oil tank assembly are respectively connected to external interfaces in the wiring terminal box.

10. A hydraulic system practical training platform, characterized in that: The hydraulic platform comprises the hydraulic platform according to any one of claims 1-9. The hydraulic platform comprises the hydraulic platform according to any one of claims 1-9.

Images