A marine hoisting assist device and a hoisting method

Abstract

The application provides a hoisting auxiliary device for a ship, which comprises an auxiliary shell fixedly sleeved on a fan pile leg, the cross section of the auxiliary shell is in a rhombic shape, the auxiliary shell is coaxially arranged with the fan pile leg, the two ends of the auxiliary shell close to the fan pile leg are provided with excess arc edges, the two ends of the top of the auxiliary shell are provided with lifting lugs, the two lifting lugs are mirror-symmetrically distributed along the axis of the fan pile leg, the lifting lugs are located on the connecting line of the far ends of the auxiliary shell, and the auxiliary shell is internally provided with an arc-shaped air return channel capable of making air return and a guide flow channel capable of guiding air in one direction. The application has the effects of prolonging the window period of hoisting and transporting construction of the offshore fan pile leg and the stability of the hoisting and transporting process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hoisting equipment, in particular to a marine hoisting auxiliary device and a hoisting method. BACKGROUND

[0002] The existing ship operation generally has higher requirements for the marine environment, especially for the wind turbine installation ship. The installation environment for wind turbine legs, wind turbine blades, etc. is generally that the wind speed is not greater than 10 m / s, and the installation direction should be kept parallel to the wind direction as much as possible. However, due to the complex and changeable marine environment, spiral wind, gale, breeze, etc. may exist at any time and are flexible and changeable. In particular, the marine wind power site selection is generally selected in a typical sea wind area, so there is a relatively obvious typical sea condition in the installation area of the marine wind power equipment, thereby leaving a short operation window period for the offshore wind power installation ship, which greatly limits the installation progress of the offshore wind power equipment. The hoisting equipment of other ship types also has such problems. SUMMARY

[0003] In view of the deficiencies in the prior art, the present application provides a marine hoisting auxiliary device and a hoisting method, which solve the problem of a short operation window period for device hoisting in the prior art.

[0004] According to an embodiment of the present application, a marine hoisting auxiliary device comprises an auxiliary shell fixedly sleeved on a wind turbine leg, the cross section of the auxiliary shell is rhombic, the auxiliary shell is coaxially arranged with the wind turbine leg, both ends of the auxiliary shell close to the wind turbine leg are provided with overhanging arc edges, both ends of the top of the auxiliary shell are provided with lifting lugs, the two lifting lugs are mirror-symmetrically distributed along the axis of the wind turbine leg, the lifting lugs are located on the connecting line of the far ends of the auxiliary shell, and the auxiliary shell is provided with an arc-shaped air return channel capable of making air return and an air one-way guide channel.

[0005] Preferably, the return channel and the guide channel are equidistantly distributed along the axial direction of the auxiliary shell.

[0006] Preferably, the guide channel is located on one side of the air return port of the return channel, and the air inlet port and the air return port of the return channel are located on both sides of the far end edges of the auxiliary shell.

[0007] Preferably, the opening area of the air inlet port is greater than the opening area of the air return port.

[0008] Preferably, the opening area of the air inlet port is equal to the sum of the opening areas of the air return port and the air passing port of the guide channel.

[0009] Preferably, the guide channel is arc-shaped, and the middle part of the arc is convex to the outside of the auxiliary shell.

[0010] Preferably, the two distal ends of the auxiliary shell are provided with the backflow channels, the flow guide channels penetrate through the two distal ends of the auxiliary shell, and the backflow channels at the two ends of the auxiliary shell are arranged in axial mirror symmetry along the auxiliary shell.

[0011] Preferably, the inner wall of the auxiliary shell is provided with electromagnets at equal angles around the axis, and the movable ends of the electromagnets can be attached to the outer wall of the fan pile; the bottom end of the auxiliary shell is provided with a lifting rope at equal angles around the axis, and the movable end of the lifting rope is connected to a clamp fixedly connected to the bottom end of the fan pile.

[0012] A lifting method of a marine lifting auxiliary device, comprising the following steps: S1, connecting, the auxiliary shell is sleeved on the fan pile, the auxiliary shell is fixedly connected to the fan pile, and the lifting ear at the top of the auxiliary shell is connected through the lifting rope of the hoisting equipment; S2, wind direction detection, the working condition wind direction of the hoisting area is detected through the wind direction sensor of the hoisting equipment, the direction of the auxiliary shell is adjusted through the cable of the hoisting equipment according to the detected working condition wind direction, so that the openings of the backflow channels and the flow guide channels are located on the windward surface; S3, hoisting, during the transportation of the fan pile by the hoisting equipment, the angle of the auxiliary shell is adjusted correspondingly according to the rotation of the hoisting equipment, so that the openings of the backflow channels and the flow guide channels are always located on the windward surface.

[0013] Preferably, the support structure of the hoisting equipment adopts a door-shaped support column, which comprises two vertically arranged steel structure columns and a horizontal structure column connected to the top ends of the two steel structure columns.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] 1. The auxiliary shell is sleeved on the fan pile, the auxiliary shell is fixedly connected to the fan pile, the backflow channels and the flow guide channels on the auxiliary shell are adapted to the windward and wind conditions, the stability of the hoisting process is improved, and the operation window period is prolonged.

[0016] 2. The auxiliary shell is in a streamlined shape, the stability of the hoisting process is improved by increasing the turbulent dissipation filter.

[0017] 3. The auxiliary shell is connected to the fan pile, the hoisting equipment hoists the auxiliary shell, and then the hoisting of the fan pile is realized, the cable is not directly connected to the fan pile, the connection structure for hoisting the fan pile in the air can be avoided, and the construction efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The top view of the auxiliary device installed in the embodiment of the present application.

[0019] Figure 2 The side view of the auxiliary device installed in the embodiment of the present application.

[0020] Figure 3 This is a horizontal cross-sectional view of the installation auxiliary device according to an embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the wind flow field under windward conditions for an embodiment of the present invention with the auxiliary device installed.

[0022] Figure 5 This is a construction structure diagram for installing the auxiliary device according to an embodiment of the present invention.

[0023] Figure 6 This is a front view of the cable turning auxiliary device for hoisting equipment in an embodiment of the present invention.

[0024] In the above attached diagram: 1. Auxiliary casing; 2. Fan leg; 3. Lifting lug; 4. Lifting rope; 5. Air inlet; 6. Air return inlet; 7. Air outlet; 8. Return channel; 9. Guide channel; 10. Electromagnet. Detailed Implementation

[0025] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] like Figures 1-5 As shown, to extend the window period for wind turbine leg hoisting operations and improve the stability of the hoisting process, this invention proposes a marine hoisting auxiliary device, including an auxiliary housing 1 fixedly mounted on the wind turbine leg 2. The auxiliary housing 1 has a rhomboid cross-section and is coaxially arranged with the wind turbine leg 2. Both ends of the auxiliary housing 1 near the wind turbine leg 2 are provided with transition arc edges. Both ends of the top of the auxiliary housing 1 are provided with lifting lugs 3, which are mirror-symmetrically distributed along the axis of the wind turbine leg 2. The lifting lugs 3 are located on the line connecting the more distant ends of the auxiliary housing 1. The auxiliary housing 1 is provided with an arc-shaped air return channel 8 that allows air to return and a unidirectional air guide channel 9.

[0027] The wind turbine leg 2 is vertically positioned on the ground. The hoisting equipment, connected to the lifting lug 3 via a cable, vertically hoists the auxiliary casing 1, positioning it directly above the wind turbine leg 2. The hoisting equipment then unwinds the cable, moving the auxiliary casing 1 from top to bottom and securing it onto the wind turbine leg 2. A secure connection is then established between the auxiliary casing 1 and the wind turbine leg 2. After this connection, the orientation of the auxiliary casing 1 is selected based on the wind direction in the construction area to maintain its stability during hoisting.

[0028] A semi-circular flow channel is provided at one end of the return channel 8 near the auxiliary housing 1. Both ends of the semi-circular flow channel are connected to linear flow channels. The flow enters the return channel 8 from the linear flow channel at one end and flows out from the other end after being guided, thus partially offsetting the oncoming wind.

[0029] The auxiliary shell 1 is in the shape of a rhombic column, and overhanging arc edges are arranged near the two ends, so that the auxiliary shell 1 is in the shape of a streamline as a whole, the turbulent dissipation rate can be increased, and the stability of hoisting construction can be improved.

[0030] The auxiliary shell 1 is in the shape of a rhombic column, and overhanging arc edges are arranged near the two ends, so that the auxiliary shell 1 is in the shape of a streamline as a whole, the turbulent dissipation rate can be increased, and the stability of hoisting construction can be improved.

[0031] As shown in Figure 2 and Figure 3 , in order to further improve the stability during hoisting, wind resistance and flow guide are realized. The backflow channels 8 and the flow guide channels 9 are equidistantly distributed along the axial direction of the auxiliary shell 1.

[0032] As shown in Figure 3 and Figure 4 , the positions of the backflow channels 8 and the flow guide channels 9 are arranged, and the flow guide of the outer wall of the auxiliary shell 1 to the wind is maintained. The flow guide channel 9 is located on one side of the air return port 6 of the backflow channel 8, and the air inlet port 5 and the air return port 6 of the backflow channel 8 are located on the two sides of the far end edges of the auxiliary shell 1.

[0033] As shown in Figure 3 , the opening area of the air inlet port 5 is greater than the opening area of the air return port 6. During the flow guiding process of the backflow channel 8, the wind speed will be lost, and the wind pressure can be maintained by reducing the opening area of the air return port 6.

[0034] As a preferred embodiment of the present application, the opening area of the air inlet port 5 is equal to the sum of the opening areas of the air return port 6 and the air passing port 7 of the flow guide channel 9. The air inlet port 5 enters part of the airflow, the air return port 6 discharges air, and the air passing port 7 guides air. In the state of equal area, the wind force balance on the sides of the air inlet port 5 and the air return port 6 can be maintained, and the stability of the auxiliary shell 1 can be ensured.

[0035] As shown in Figure 4 , the flow guide channel 9 is arranged. The flow guide channel 9 is in the shape of an arc, and the middle part of the arc protrudes outwardly from the auxiliary shell 1.

[0036] As shown in Figure 4 , the gravity balance of the two ends of the auxiliary shell 1 is ensured. The two far ends of the auxiliary shell 1 are provided with the backflow channels 8, the flow guide channels 9 penetrate through the two far ends of the auxiliary shell 1, and the backflow channels 8 at the two ends of the auxiliary shell 1 are arranged in mirror symmetry along the axial direction of the auxiliary shell 1.

[0037] As shown in Figure 1 and Figure 4As shown, in order to connect the auxiliary shell 1 with the wind turbine pile leg 2, the wind turbine pile leg 2 can be hoisted synchronously when hoisting the auxiliary shell 1. The electromagnet 10 is arranged at equal angles around the axis on the inner wall of the auxiliary shell 1, and the movable end of the electromagnet 10 can be attached to the outer wall of the wind turbine pile leg 2. The hoisting rope 4 is arranged at equal angles around the axis on the bottom end of the auxiliary shell 1, and the clamp connected to the movable end of the hoisting rope 4 is fixedly connected to the bottom end of the wind turbine pile leg 2. The power supply of the electromagnet 10 is arranged inside the auxiliary shell 1.

[0038] As shown in Figure 5 and Figure 6 , a hoisting method of a ship hoisting auxiliary device, comprising the following steps: S1, connection, the auxiliary shell 1 is sleeved on the wind turbine pile leg 2, the auxiliary shell 1 is fixedly connected with the wind turbine pile leg 2, and then the lifting lug 3 at the top of the auxiliary shell 1 is connected through the hoisting rope of the hoisting equipment; S2, wind direction detection, the working condition wind direction of the hoisting area is detected through the wind direction sensor on the hoisting equipment, the direction of the auxiliary shell 1 is adjusted through the cable of the hoisting equipment according to the detected working condition wind direction, so that the openings of the backflow channel 8 and the guide flow channel 9 are on the windward surface; S3, hoisting, during the transportation of the wind turbine pile leg 2 by the hoisting equipment, the angle of the auxiliary shell 1 is adjusted correspondingly according to the rotation of the hoisting equipment, so that the openings of the backflow channel 8 and the guide flow channel 9 are always on the windward surface.

[0039] As shown in Figure 6 , in order to adjust the direction of the cable, a through hole is opened on the end surface of the driven gear for the cable to pass through, the cable passes through the through hole, the motor drives the driving gear to rotate, the driving gear drives the driven gear meshing therewith to rotate, thereby adjusting the angle of the cable, driving the auxiliary shell 1 to rotate, so that any one end of the two ends of the auxiliary shell 1 faces the windward surface, reducing the wind force received by the auxiliary shell 1. During the rotation, the driven gear rotates between ±90°.

[0040] As shown in Figure 5 , the support structure of the hoisting equipment adopts a door-shaped support column, which includes two vertically arranged steel structure columns and a horizontal structure column connecting the top ends of the two steel structure columns.

Claims

1. A marine lifting auxiliary device, characterized in that: Includes an auxiliary housing (1) fixedly mounted on the wind turbine leg (2). The cross-section of the auxiliary housing (1) is rhomboid. The auxiliary housing (1) is coaxially arranged with the wind turbine leg (2). Both ends of the auxiliary housing (1) near the wind turbine leg (2) are provided with transition arc edges. Both ends of the top of the auxiliary housing (1) are provided with lifting lugs (3). The two lifting lugs (3) are mirror-symmetrically distributed along the axis of the wind turbine leg (2). The lifting lugs (3) are located on the line connecting the far end of the auxiliary housing (1). The auxiliary housing (1) is provided with an arc-shaped air return channel (8) that allows air to return and a unidirectional air guide channel (9). The return channel (8) and the guide channel (9) are equidistantly distributed along the axial direction of the auxiliary shell (1); The flow channel (9) is located on one side of the return air inlet (6) of the return channel (8), and the air inlet (5) and return air inlet (6) of the return channel (8) are located on both sides of the far edge of the auxiliary shell (1). The opening area of ​​the air inlet (5) is larger than the opening area of ​​the air return outlet (6); The opening area of ​​the air inlet (5) is equal to the sum of the opening areas of the return air inlet (6) and the air outlet (7) of the guide channel (9); The working wind direction of the hoisting area is detected by the wind direction sensor on the hoisting equipment. Based on the detected working wind direction, the direction of the auxiliary shell (1) is adjusted by the cable of the hoisting equipment so that the openings of the return channel (8) and the guide channel (9) are on the windward side.

2. The marine lifting auxiliary device as described in claim 1, characterized in that: The flow channel (9) is arc-shaped, and the middle part of the arc protrudes outward from the auxiliary shell (1).

3. A marine lifting auxiliary device as described in claim 1 or 2, characterized in that: The auxiliary housing (1) is provided with the return channel (8) at both of its far ends. The guide channel (9) passes through the two far ends of the auxiliary housing (1). The return channels (8) located at both ends of the auxiliary housing (1) are mirror-symmetrically arranged along the axial direction of the auxiliary housing (1).

4. The marine lifting auxiliary device as described in claim 1, characterized in that: The inner wall of the auxiliary housing (1) is provided with an electromagnet (10) at equal angles around the axis, and the movable end of the electromagnet (10) can be attached to the outer wall of the wind turbine leg (2). The bottom end of the auxiliary housing (1) is provided with a lifting rope (4) at equal angles around the axis, and the clamp connected to the movable end of the lifting rope (4) is fixedly connected to the bottom end of the wind turbine leg (2).

5. A lifting method for a marine lifting auxiliary device as described in any one of claims 1-4, characterized in that... Includes the following steps: S1. Connect the auxiliary housing (1) onto the wind turbine leg (2) to make a fixed connection between the auxiliary housing (1) and the wind turbine leg (2), and then connect the lifting lug (3) on the top of the auxiliary housing (1) through the lifting rope on the hoisting equipment. S2, wind direction detection: the working wind direction of the hoisting area is detected by the wind direction sensor on the hoisting equipment. Based on the detected working wind direction, the direction of the auxiliary shell (1) is adjusted by the cable of the hoisting equipment so that the openings of the return channel (8) and the guide channel (9) are on the windward side. S3. Lifting: During the process of transporting the wind turbine legs (2) by the lifting equipment, the angle of the auxiliary shell (1) is adjusted according to the rotation of the lifting equipment so that the openings of the return channel (8) and the guide channel (9) are always on the windward side.

6. The lifting method of a marine lifting auxiliary device as described in claim 5, characterized in that: The support structure of the hoisting equipment adopts a portal-type support column, which includes two vertically arranged steel structural columns and a horizontal structural column connecting the tops of the two steel structural columns.

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