CN215860612U - Hydraulic device for offshore wind power negative pressure barrel base - Google Patents

Abstract

The utility model discloses a hydraulic device for a base of a negative pressure barrel of offshore wind power, which comprises a frame, a suction pump, a suction pipe, a conveying pipe and a discharge pipe, wherein a clamping mechanism is arranged at the butt joint end of the conveying pipe, the hydraulic device also comprises a locking mechanism, an electromagnet is arranged at the front end of the frame, a pair of rotatable supporting arms are arranged at two sides of the electromagnet, a longitudinal wheel module and a circumferential wheel module are arranged on the supporting arms, an elastic telescopic mechanism is arranged between the rear part of each supporting arm and the front part of the frame, a distance sensor is arranged at the bottom of the frame, a photoelectric sensor is arranged at the front part of the frame, and the device also comprises a controller. The hydraulic device can be adsorbed on a supporting cylinder of the negative pressure barrel through the matching of the electromagnet and the longitudinal and circumferential wheel sets, the up-and-down motion of the hydraulic device and the circumferential motion around the supporting cylinder are accurately controlled, the automatic sinking, the automatic positioning and the automatic butt locking of the hydraulic device are realized, and the hydraulic device is simple and labor-saving. The hydraulic device can be used under water with the depth of 100 meters and cannot leak.

Description

Hydraulic device for offshore wind power negative pressure barrel base

Technical Field

The utility model relates to the technical field of offshore wind power installation, in particular to a hydraulic device for an offshore wind power negative pressure barrel base.

Background

Wind power is inexhaustible clean energy, and with the popularization of the concepts of environmental protection and sustainable development, the scale of wind power installation in China is increased year by year.

Offshore wind power is widely used in coastal areas because of the advantages of abundant wind power resources and no land occupation. Before the offshore wind power is installed, a base needs to be sunk into the sea bottom, the tower is connected with the base, and finally the fan is hoisted at the top of the tower.

Traditional base is pile formula base, through pile driver striking pile foundation many times after standing with the striking, finally puts the pile foundation in place, and this kind of base installation inefficiency, consuming time are long and the noise is big, is being replaced by suction base at present.

The suction base adopts the negative pressure barrel as a base, seawater in the negative pressure barrel is pumped out through the hydraulic device after the negative pressure barrel is sunk into the seabed, negative pressure is formed inside the negative pressure barrel, the barrel body is gradually sunk below the seabed through the downward pressing of the pressure difference inside and outside the barrel body, and the water pressure inside the barrel body can be increased through conveying the seawater into the negative pressure barrel, so that the negative pressure barrel floats upwards.

The existing hydraulic device needs to be locked with a base before sinking into the base, a pipeline of the hydraulic device is butted with a pipeline of the base, then the hydraulic device and the base are placed on the sea bottom together, and after the base is installed in place, the hydraulic device and the base are unlocked and the hydraulic device is hoisted.

In the actual construction process, the foundation is positioned on site, errors are avoided, namely the sinking position of the foundation deviates from the designed installation position, and the foundation needs to float upwards and be repositioned and sink when the deviation is found to be large after installation.

However, the existing hydraulic device does not have the functions of automatic sinking and butt joint, and for the base under the sea, the hydraulic device can be connected and butted with the base at the sea bottom only in a manual submergence and installation mode, so that the operation is labor-consuming and difficult, and the improvement is needed.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a hydraulic device for a base of an offshore wind power negative pressure barrel, which can automatically sink and automatically butt, replaces manpower, and is simpler and more labor-saving.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a marine wind power negative pressure bucket base hydraulic means, includes the frame, is equipped with two-way suction pump, suction tube, conveyer pipe and discharge pipe in the frame, is equipped with first control valve on the discharge pipe, is equipped with the second control valve in the one end that conveyer pipe and suction pump are connected, the butt joint end downwarping of conveyer pipe is to vertical state, the butt joint end of conveyer pipe is equipped with the sealing washer, be provided with clamping mechanism on the butt joint end of conveyer pipe, clamping mechanism is used for pressing from both sides the end of the butt joint pipe of conveyer pipe and negative pressure bucket tight fixedly, and this hydraulic means still includes locking mechanical system, locking mechanical system is used for locking frame and negative pressure bucket, still is equipped with the electro-magnet in the front end of frame, the both sides level symmetry of electro-magnet is provided with a pair of support arm, the support arm is crooked towards the place ahead of frame, the one end of support arm is connected with the frame rotation, the hydraulic device comprises a support arm, a longitudinal wheel module, a circumferential wheel module, an elastic telescopic mechanism, a distance sensor, a photoelectric sensor and a controller, wherein the longitudinal wheel module and the circumferential wheel module are arranged in the front of the support arm, the distance exists between the circumferential wheel module and the longitudinal wheel module, the elastic telescopic mechanism is arranged between the rear of the support arm and the front of a rack and used for driving the support arm to swing forwards, the distance sensor is arranged at the bottom of the rack, the photoelectric sensor is arranged in the front of the rack, the controller is connected with the suction pump, the locking mechanism, the clamping mechanism and the electromagnet, and the controller is used for controlling the suction pump, the locking mechanism, the clamping mechanism and the electromagnet to act.

As a preferable scheme: clamping mechanism include with the end connection's of conveyer pipe backup pad, the both sides level of backup pad is provided with a pair of arm lock symmetrically, the middle part and the backup pad of arm lock rotate to be connected, are provided with the pneumatic cylinder between the rear end of two sets of arm lock, and the both ends of pneumatic cylinder rotate with the rear end of two sets of arm lock respectively to be connected, the front end of arm lock and the inboard that is located the arm lock are provided with convex clamp splice, the clamp splice rotates with the front end of arm lock to be connected, the clamp splice is used for cliping the conveyer pipe and the flange to the pipe.

As a preferable scheme: the inboard of the butt joint end of conveyer pipe is provided with annular spacing rank coaxially, the sealing washer sets up in the spacing rank, the terminal surface of the butt joint end of butt joint pipe is provided with the butt joint ring coaxially, the height that highly is less than the spacing rank of sealing washer for the bottom surface of sealing washer is higher than the terminal surface of the butt joint end of conveyer pipe.

As a preferable scheme: the height of the inner side part of the sealing ring is greater than that of the outer side part of the sealing ring, and the inner side part of the sealing ring is of a hollow oval structure.

As a preferable scheme: the end face of the butt joint end of the conveying pipe is coaxially fixed with a gasket, the end face of the butt joint pipe is coaxially fixed with at least two circles of sealing rings, and the sealing rings are located under the gasket.

As a preferable scheme: the locking mechanism comprises a plug board fixed on the negative pressure barrel, a sleeve fixed on the side portion of the rack and an electromagnetic lock fixed on the side portion of the sleeve, the sleeve is of a hollow structure, the lower end of the sleeve is an opening, the sleeve is used for allowing the plug board on the negative pressure barrel to be inserted, a through hole is formed in the side portion of the sleeve, the through hole is used for allowing a lock cylinder of the electromagnetic lock to be inserted into the sleeve, a locking hole is formed in the upper end of the plug board, and when the plug board is inserted into the sleeve, the locking hole is aligned with the through hole.

Compared with the prior art, the utility model has the advantages that: the hydraulic device can be adsorbed on a supporting cylinder of the negative pressure barrel through the matching of the electromagnet and the longitudinal and circumferential wheel sets, and the up-and-down movement and the circumferential movement around the supporting cylinder of the hydraulic device are accurately controlled, so that the automatic sinking and the automatic positioning of the hydraulic device are realized; and the hydraulic device is provided with a clamping mechanism, so that the automatic butt joint and locking of the hydraulic device pipeline and the negative pressure barrel pipeline can be realized. The hydraulic device can replace manpower, and is simple and labor-saving to use.

Drawings

FIG. 1 is a schematic overall structure diagram of a hydraulic apparatus according to a first embodiment;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic structural view of a base of the negative pressure barrel according to the first embodiment;

FIG. 4 is a first schematic view illustrating an operating state of the hydraulic apparatus according to the first embodiment;

FIG. 5 is an enlarged view of the portion B of FIG. 4;

FIG. 6 is a second schematic diagram illustrating an operating condition of the hydraulic apparatus according to the first embodiment;

FIG. 7 is a schematic structural view of a lock mechanism according to the first embodiment;

FIG. 8 is a schematic view of a docking structure according to a first embodiment;

FIG. 9 is an enlarged view of portion C of FIG. 8;

fig. 10 is a schematic circuit diagram according to a first embodiment.

1, a frame; 2. a suction pump; 3. a suction tube; 4. a delivery pipe; 5. a discharge pipe; 6. a first control valve; 7. a second control valve; 8. a control box; 9. a clamping mechanism; 901. a support plate; 902. clamping arms; 903. a hydraulic cylinder; 904. a clamping block; 10. a connecting seat; 11. a support arm; 12. a longitudinal wheel module; 13. a circumferential wheel module; 14. a telescopic rod; 15. a spring; 16. an electromagnet; 17. a photosensor; 18. a distance sensor; 19. a sleeve; 20. an electromagnetic lock; 21. a hydraulic pump; 22. a float bowl; 23. a barrel body; 24. a support cylinder; 25. butt-joint pipes; 26. a plugboard; 27. reflecting light; 28. a through hole; 29. a locking hole; 30. a seal ring; 31. a docking ring; 32. a cavity; 33. a gasket; 34. and (4) tightly connecting the rings.

Detailed Description

The first embodiment is as follows:

referring to fig. 1 and 2, the hydraulic device for the offshore wind power negative pressure barrel base comprises a frame 1, wherein a bidirectional suction pump 2, a suction pipe 3, a conveying pipe 4 and a discharge pipe 5 are mounted on the frame 1. One end of the suction pipe 3 is connected with one end of the suction pump 2, and the other end of the suction pipe 3 is used for communicating with seawater outside the negative pressure barrel; one end of the conveying pipe 4 is connected with the other end of the suction pump 2, and the other end of the conveying pipe 4 is used for being connected with a butt joint pipe 25 on the negative pressure barrel; one end of the discharge pipe 5 is communicated with the middle section of the delivery pipe 4, and the other end of the discharge pipe 5 is used for discharging the seawater in the negative pressure barrel.

The discharge pipe 5 is provided with a first control valve 6, and the first control valve 6 is used for controlling the on-off of the discharge pipe 5. And a second control valve 7 is arranged at one end of the delivery pipe 4 connected with the suction pump 2, and the second control valve 7 is used for controlling the on-off of the delivery pipe 4.

The butt end of the conveying pipe 4 is bent downward to a vertical state so as to be butted with the butt pipe 25 on the negative pressure bucket, and a clamping mechanism 9 is provided on the butt end of the conveying pipe 4. The clamping mechanism 9 is used for clamping and fixing the delivery pipe 4 and the end of the butt joint pipe 25.

As shown in fig. 2, the clamping mechanism 9 includes a supporting plate 901 connected to the end of the conveying pipe 4, a pair of clamping arms 902 are horizontally and symmetrically disposed on two sides of the supporting plate 901, that is, the front ends of the two sets of clamping arms 902 are respectively located on two sides of the butt end of the conveying pipe 4, the middle portion of the clamping arm 902 is rotatably connected to the supporting plate 901, a hydraulic cylinder 903 is disposed between the rear ends of the two sets of clamping arms 902, and two ends of the hydraulic cylinder 903 are respectively rotatably connected to the rear ends of the two sets of clamping arms 902. The front end of the clamping arm 902 and the inner side of the clamping arm 902 are provided with an arc-shaped clamping block 904, the clamping block 904 is rotatably connected with the front end of the clamping arm 902, and the cross section of the clamping block 904 is in a C shape, namely a clamping opening is formed inside the clamping block 904. And connecting flanges are arranged at the butt joint end of the conveying pipe 4 and the butt joint end of the butt joint pipe 25, and the clamping openings are used for clamping the two connecting flanges.

The hydraulic cylinder 903 is driven to clamp the two groups of clamping arms 902 when being extended, and the hydraulic cylinder 903 is driven to drive the two groups of clamping arms 902 to be away from the connecting flange when being shortened. A hydraulic pump 21 for driving the hydraulic cylinder 903 is also mounted on the frame 1.

Referring to fig. 8 and 9, in the present embodiment, an annular stopper step is coaxially provided inside the abutting end of the carrier pipe 4, a seal ring 30 is fitted in the stopper step, and an abutting ring 31 is coaxially provided on the end surface of the abutting end of the abutting pipe 25. The height of the sealing ring 30 is less than the height of the limiting step, so that the bottom surface of the sealing ring 30 is higher than the end surface of the butt joint end of the conveying pipe 4, and the butt joint ring 31 can smoothly enter the conveying pipe 4.

After the butt joint ring 31 enters the conveying pipe 4, the butt joint ring 31 extrudes the sealing ring 30, and then the two flanges are clamped through the clamping block 904, so that the end surface of the conveying pipe 4 and the end surface of the butt joint pipe 25 are mutually extruded, the sealing ring 30 is pressed more tightly, and the butt joint part has good sealing performance.

The height of the inner side of the sealing ring 30 in this embodiment is greater than that of the outer side thereof, and the inner side thereof is a hollow oval structure, i.e. the inner side has an oval cavity 32, so that the inner side of the sealing ring 30 has a certain deformation space.

During butt joint, the butt joint ring 31 enters the conveying pipe 4 and abuts against the bottom of the outer side portion of the sealing ring 30, and then the two connecting flanges are fastened and clamped through the clamping block 904, so that the butt joint is sealed. In the process of the operation of the hydraulic device, the seawater flows in the delivery pipe 4, at the moment, the water pressure of the seawater acts on the inner side part of the sealing ring 30, the seawater presses the inner side part of the sealing ring 30 from inside to outside, so that the inner side part of the sealing ring 30 is pressed to be flat, the inner side part of the sealing ring 30 presses the inner wall of the butt joint ring 31 and the inner wall of the delivery pipe 4, and the sealing performance of the butt joint is improved. The larger the flow rate of the transported seawater is, the larger the seawater pressure acting on the inner side portion of the sealing ring 30 is, that is, the larger the extrusion force of the inner side portion of the sealing ring 30 to the inner walls of the abutting ring 31 and the transporting pipe 4 is, the sealability of the abutting portion is improved, and the reliability of the connection of the abutting portion is ensured.

In this embodiment, a gasket 33 is coaxially fixed to the end surface of the butt end of the feed pipe 4, at least two rings of sealing rings 34 are coaxially fixed to the end surface of the butt pipe 25, and the sealing rings 34 are positioned directly below the gasket 33. In the butt joint process, after the butt joint ring 31 completely enters the conveying pipe 4, the sealing ring 34 presses the gasket 33, and under the clamping force of the clamping block 904, the sealing ring 34 and the gasket 33 are pressed more tightly, so that sealing is realized.

So that the butt joint has a triple sealing structure, the first sealing structure is a sealing structure between the butt ring 31 and the outer side part of the sealing ring 30, and the second sealing structure is a sealing structure between the inner side part of the sealing ring 30 and the inner wall of the butt ring 31 and the inner wall of the conveying pipe 4; the third seal structure is a seal structure between the gasket 33 and the seal ring 34. The sealing performance of the butt joint can be greatly improved through the triple sealing structure, so that the hydraulic device can be suitable for underwater with the depth of 100 meters, and the leakage condition can not occur completely.

An electromagnet 16 is further installed at the front end of the rack 1, a pair of supporting arms 11 are horizontally and symmetrically arranged on two sides of the electromagnet 16, and the supporting arms 11 are bent towards the front of the rack 1. One end of the supporting arm 11 is rotatably connected with the connecting seat 10, and the connecting seat 10 is fixedly connected with the machine frame 1. An electrically driven longitudinal wheel module 12 and a circumferential wheel module 13 are mounted in front of the support arm 11, with a spacing between the circumferential wheel module 13 and the longitudinal wheel module 12. An expansion link 14 is arranged between the rear part of the support arm 11 and the front part of the rack 1, two ends of the expansion link 14 are respectively connected with the front part of the rack 1 and the rear part of the support arm 11 in a rotating manner, a spring 15 is sleeved on the expansion link 14, and the spring 15 is used for driving the expansion link 14 to extend.

Referring to fig. 4, 5 and 6, the longitudinal wheel module 12 and the circumferential wheel module 13 are each adapted to be in contact with a surface of the support cylinder 24.

When the electromagnet 16 is electrified, the electromagnet generates magnetic force, and the supporting cylinder 24 is a steel cylinder, so that the rack 1 is pulled to the steel cylinder by the magnetic force generated by the electromagnet 16, the longitudinal wheel module 12 is firstly contacted with the supporting cylinder 24, the supporting arm 11 rotates by a certain angle due to the pulling of the magnetic force after the contact, the telescopic rod 14 is shortened, and the spring 15 is compressed until the force balance is achieved. At this time, the longitudinal wheel module 12 is tightly attached to the surface of the support cylinder 24, and the circumferential wheel assembly is not in contact with the surface of the support cylinder 24, i.e. in a suspended state.

In this state, the hydraulic device is driven to move up and down in the height direction of the support cylinder 24 by controlling the rotation of the longitudinal wheel module 12.

When the electromagnet 16 is electrified with larger current, stronger magnetic force is generated, the rack 1 and the supporting cylinder 24 are pulled closer by the magnetic force, at the moment, the supporting arm 11 rotates by a larger angle, the spring 15 is further compressed, the middle part of the supporting arm 11 is close to the supporting cylinder 24, the end part of the supporting arm 11 is far away from the supporting cylinder 24, the circumferential wheel module 13 is attached to the surface of the supporting cylinder 24, and the longitudinal wheel module 12 is far away from the supporting cylinder 24 and becomes suspended, so that the force balance state is achieved.

In this state, by controlling the rotation of the circumferential wheel module 13, the hydraulic device can be driven to move in the circumferential direction of the support cylinder 24.

The hydraulic device also comprises a locking mechanism which is used for locking the frame 1 and the negative pressure barrel.

Referring to fig. 3 and 7, the locking mechanism in this embodiment includes a plug board 26 fixed on the top surface of the barrel body 23 of the negative pressure barrel, a sleeve 19 fixed on the side of the frame 1, and an electromagnetic lock 20 fixed on the side of the sleeve 19. The sleeve 19 is hollow and open at its lower end, and the sleeve 19 is used for inserting the plugboard 26. A through hole 28 is formed at a side portion of the sleeve 19, the through hole 28 is used for inserting the key cylinder of the electromagnetic lock 20 into the sleeve 19, and a locking hole 29 is formed at an upper end of the plug plate 26, and when the plug plate 26 is inserted into the sleeve 19, the locking hole 29 is aligned with the through hole 28.

After the plug board 26 is inserted into the sleeve 19, the electromagnetic lock 20 is controlled to extend the lock cylinder of the electromagnetic lock 20, and the lock cylinder passes through the through hole 28 and the locking hole 29, so that the sleeve 19 and the plug board 26 are locked together, that is, the hydraulic device is fixed to the barrel 23. The hydraulic device can be unlocked from the barrel body 23 by controlling the retraction of the lock cylinder of the electromagnetic lock 20.

The hydraulic device is suitable for the negative pressure bucket base shown in fig. 7. The pedestal comprises a barrel body 23 and a supporting barrel 24, wherein the lower end of the supporting barrel 24 is fixedly connected with the top of the barrel body 23. The top and the side of the barrel body 23 are sealed structures, and the lower part of the barrel body 23 is an open structure. In this embodiment, a reflective sticker 27 is further fixed to the support cylinder 24.

As shown in fig. 1, a distance sensor 18 is installed at the bottom of the housing 1, a photosensor 17 is installed at the front of the housing 1, and the photosensor 17 is integrated with a light emitter and a light receiver.

A waterproof control box 8 is also arranged on the frame 1, and a controller is arranged in the control box 8.

Referring to fig. 10, the controller includes a main control module, and further includes a suction pump 2 driving module, an electromagnetic lock 20 driving module, a longitudinal wheel driving module, a circumferential wheel driving module, a hydraulic pump 21 driving module, an electromagnet 16 driving module, a first valve driving module, a second valve driving module, and a communication module connected to the main control module; the suction pump 2 driving module is connected with the suction pump 2 and used for driving the suction pump 2; the electromagnetic lock 20 driving module is connected with the electromagnetic lock 20 and used for driving the electromagnetic lock 20; the longitudinal wheel driving module is connected with the longitudinal wheel module 12 and is used for driving the longitudinal wheel module 12; the circumferential wheel driving module is connected with the circumferential wheel module 13 and is used for driving the circumferential wheel module 13; the hydraulic pump 21 driving module is connected with the hydraulic pump 21 and used for driving the hydraulic pump 21; the electromagnet 16 driving module is connected with the electromagnet 16 and used for driving the electromagnet 16; the first valve driving module is connected with the first control valve 6 and used for driving the first control valve 6; the second valve driving module is connected with the second control valve 7 and used for driving the second control valve 7; the communication module is connected with the communication serial port of the main control module and used for realizing communication between the controller and the external equipment.

The signal output ends of the distance sensor 18 and the photoelectric sensor 17 are respectively connected with the signal sampling end of the main control module. The control signal input end of the driving module is connected with the control signal output end of the main control module, and the control signal output end of the driving module is connected with the control end of each actuator. The sensors and modules need to be connected with respective working power supplies.

The hydraulic device is connected with equipment on a ship through a cable, and the cable is integrated with a power cable, a communication cable and a bearing cable.

In this embodiment, buoys 22 are also installed at four corners of the frame 1 to counteract the weight of the hydraulic device and balance the hydraulic device.

Example two:

a control method of a hydraulic device of a base of an offshore wind power negative pressure barrel specifically comprises the following steps:

s1, locking the hydraulic device and the negative pressure barrel together through an automatic locking mechanism, completing butt joint of a conveying pipe of the hydraulic device and a butt joint pipe of the negative pressure barrel, and connecting the hydraulic device with control equipment on a ship through a cable;

s2, opening the first control valve and closing the second control valve, hoisting the negative pressure barrel by a hoisting device on the construction ship, suspending and slowly lowering the negative pressure barrel to enable the negative pressure barrel to slowly sink to the seabed, when the negative pressure barrel reaches the seabed, buckling the seabed at the bottom of the negative pressure barrel to enable a sealed space to be formed inside the negative pressure barrel, then sinking the negative pressure barrel to a certain depth below the seabed under the action of self gravity until the negative pressure barrel is stably kept on the seabed, and in the process, part of seawater and lifted silt in the negative pressure barrel sequentially flow out through the butt joint pipe, the conveying pipe and the discharging pipe;

s3, closing the first control valve and opening the second control valve, controlling the suction pump to pump out seawater and silt in the barrel body and discharge the seawater and the silt through the suction pipe, so that negative pressure is formed inside the negative pressure barrel, the negative pressure barrel gradually sinks below a seabed under the pressure of outside seawater until the negative pressure barrel cannot sink continuously, and controlling the suction pump to reversely convey the outside seawater into the barrel body if the negative pressure barrel needs to float upwards, so that the water pressure in the negative pressure barrel gradually rises, and the negative pressure barrel is driven to float upwards by using pressure difference;

s4, closing the suction pump, disconnecting the delivery pipe from the butt joint pipe, and lifting the hydraulic device out of the sea surface through the lifting equipment;

in the case where the hydraulic device has been separated from the tub, when the base is floated:

a. the hydraulic device is lowered to the outer side of the supporting cylinder of the negative pressure barrel through the lifting equipment, the position of the hydraulic device is adjusted, the electromagnet is electrified to generate magnetic force, so that the hydraulic device approaches to the supporting cylinder until the longitudinal wheel module is contacted with the supporting cylinder, and the spring is compressed to achieve a force balance state;

b. controlling the longitudinal wheel to rotate to enable the hydraulic device to sink, detecting the distance between the hydraulic device and the barrel body in real time through the distance sensor, feeding the distance detection result back to the controller, controlling the longitudinal wheel module to stop rotating when the distance reaches a preset value, enabling the hydraulic device to be kept at the current height position, then increasing the current of the electromagnet, enabling the circumferential wheel module to be in contact with the supporting barrel, controlling the circumferential wheel module to rotate, enabling the hydraulic device to move circumferentially around the supporting barrel, carrying out circumferential positioning on the hydraulic device, reducing the current of the electromagnet when the butt joint end of the conveying pipe is aligned to the butt joint end of the butt joint pipe (at the moment, the sleeve is just positioned right above the plug board), enabling the longitudinal wheel module to be in contact with the supporting barrel to control the circumferential wheel module to stop moving, then controlling the longitudinal wheel module to rotate, enabling the hydraulic device to sink continuously until the plug board is inserted into the sleeve, and enabling the butt joint pipe to be in butt joint with the conveying pipe at the moment, controlling an electromagnetic lock to lock the rack on the barrel body, and controlling a clamping mechanism to lock a connecting flange at the butt joint;

d. and controlling a suction pump to send external seawater into the barrel body to enable the negative pressure barrel to float upwards, and finally controlling an electromagnetic lock to be opened to separate the hydraulic device from the negative pressure barrel.

In this embodiment, the method for circumferentially positioning the hydraulic device includes: and controlling the circumferential wheel module to rotate forwards, namely controlling the hydraulic device to move forwards around the supporting cylinder, controlling the light emitter of the photoelectric sensor to emit light to the supporting cylinder in the movement process, receiving the reflected light by the photoelectric receiver, and outputting an electric signal corresponding to the intensity of the reflected light. Because the light reflecting paste is pasted on the supporting cylinder, the intensity of light reflected by the light reflecting paste and the outer surface of the supporting cylinder when the light irradiates the light reflecting paste is obviously different, and the electric signal generated by the photoelectric receiver is also obviously different. The longitudinal wheel module and the circumferential wheel module are driven by stepping motors, and accurate control over the rotation angles of the longitudinal wheel module and the circumferential wheel module can be achieved by sending pulse signals to the stepping motors.

And controlling the hydraulic device to move forwards at a higher speed, gradually decelerating and stopping when the signal output by the photoelectric sensor jumps, then controlling the hydraulic device to move reversely at a lower speed, and immediately controlling the hydraulic device to stop when the signal output by the photoelectric sensor jumps again, wherein the conveying pipe is just aligned with the butt joint pipe. In order to ensure the positioning precision, the width of the reflective sticker is not too large.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.

Claims (6)

1. The utility model provides an offshore wind power negative pressure bucket base hydraulic means, includes the frame, is equipped with the suction pump, suction tube, conveyer pipe and the discharge pipe of two-way type in the frame, is equipped with first control valve on the discharge pipe, is equipped with second control valve, characterized by in the one end that conveyer pipe and suction pump are connected: the butt joint end of the conveying pipe is bent downwards to be in a vertical state, a sealing ring is arranged at the butt joint end of the conveying pipe, a clamping mechanism is arranged at the butt joint end of the conveying pipe and is used for clamping and fixing the end of a butt joint pipe of the conveying pipe and the negative pressure barrel, the hydraulic device further comprises a locking mechanism, the locking mechanism is used for locking the rack and the negative pressure barrel, an electromagnet is further arranged at the front end of the rack, a pair of supporting arms are horizontally and symmetrically arranged on two sides of the electromagnet, the supporting arms are bent towards the front of the rack, one end of each supporting arm is rotatably connected with the rack, a longitudinal wheel module and a circumferential wheel module are arranged at the front part of each supporting arm, a space exists between each circumferential wheel module and each longitudinal wheel module, an elastic telescopic mechanism is arranged between the rear part of each supporting arm and the front part of the rack and is used for driving the supporting arms to swing forwards, the hydraulic device comprises a frame, a suction pump, a locking mechanism, a clamping mechanism and an electromagnet, wherein the bottom of the frame is provided with a distance sensor, the front part of the frame is provided with a photoelectric sensor, the hydraulic device also comprises a controller, the distance sensor and the photoelectric sensor are connected with the controller, the controller is connected with the suction pump, the locking mechanism, the clamping mechanism and a driver device of the electromagnet, and the controller is used for controlling the actions of the suction pump, the locking mechanism, the clamping mechanism and the electromagnet.

2. The offshore wind power negative pressure bucket base hydraulic device of claim 1, characterized by: clamping mechanism include with the end connection's of conveyer pipe backup pad, the both sides level of backup pad is provided with a pair of arm lock symmetrically, the middle part and the backup pad of arm lock rotate to be connected, are provided with the pneumatic cylinder between the rear end of two sets of arm lock, and the both ends of pneumatic cylinder rotate with the rear end of two sets of arm lock respectively to be connected, the front end of arm lock and the inboard that is located the arm lock are provided with convex clamp splice, the clamp splice rotates with the front end of arm lock to be connected, the clamp splice is used for cliping the conveyer pipe and the flange to the pipe.

3. The offshore wind power negative pressure bucket base hydraulic device of claim 1, characterized by: the inboard of the butt joint end of conveyer pipe is provided with annular spacing rank coaxially, the sealing washer sets up in the spacing rank, the terminal surface of the butt joint end of butt joint pipe is provided with the butt joint ring coaxially, the height that highly is less than the spacing rank of sealing washer for the bottom surface of sealing washer is higher than the terminal surface of the butt joint end of conveyer pipe.

4. The offshore wind power negative pressure bucket base hydraulic device of claim 3, characterized in that: the height of the inner side part of the sealing ring is greater than that of the outer side part of the sealing ring, and the inner side part of the sealing ring is of a hollow oval structure.

5. The offshore wind power negative pressure bucket base hydraulic device of claim 4, characterized in that: the end face of the butt joint end of the conveying pipe is coaxially fixed with a gasket, the end face of the butt joint pipe is coaxially fixed with at least two circles of sealing rings, and the sealing rings are located under the gasket.

6. The offshore wind power negative pressure bucket base hydraulic device of claim 1, characterized by: the locking mechanism comprises a plug board fixed on the negative pressure barrel, a sleeve fixed on the side portion of the rack and an electromagnetic lock fixed on the side portion of the sleeve, the sleeve is of a hollow structure, the lower end of the sleeve is an opening, the sleeve is used for allowing the plug board on the negative pressure barrel to be inserted, a through hole is formed in the side portion of the sleeve, the through hole is used for allowing a lock cylinder of the electromagnetic lock to be inserted into the sleeve, a locking hole is formed in the upper end of the plug board, and when the plug board is inserted into the sleeve, the locking hole is aligned with the through hole.

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