Foldable embarkation device of deep sea floating type draught fan and using method of foldable embarkation device

Abstract

The invention discloses a foldable embarkation device of a deep sea floating type draught fan and a using method thereof.The device comprises a fixed embarkation ladder, a foldable embarkation frame and a winch, the fixed embarkation ladder comprises a plurality of stair platforms and stair flights, each stair platform is fixed to the side wall of a floating type draught fan platform, and the stair flights are fixed to the side wall of the floating type draught fan platform; every two adjacent stair platforms are connected through a stair section; the foldable embarkation frame comprises a fixed section and a folding section, the fixed section is arranged on the stair platform on the bottommost layer, the folding section and the fixed section are pivoted through a rotating shaft, and a lifting point is arranged at the outer end of the folding section; the winch is arranged on the deck of the floating type draught fan platform close to the stair platform on the highest layer, and the winch is connected with the folding section through a mooring rope. When a boarding person needs to get on the deck of the floating type draught fan platform from the maintenance ship, the winch lowers the folding section to be horizontal through the mooring rope, a hanging rope penetrates through the hanging point, and the hanging rope is used for hanging the boarding person; and the embarkation personnel are transported to the folding section by pulling the hanging rope.

Description

Technical Field

[0001] The present invention relates to the technical field of floating wind turbines, and in particular to a foldable boarding device for a deep-sea floating wind turbine and a use method thereof. Background Art

[0002] With the vigorous development of the wind power industry, human beings' utilization of wind energy resources is moving from land to shallow sea, and then from shallow sea to deep sea, and deep-sea and deep-sea floating wind turbines have come into being.

[0003] Potential boarding methods for deep-sea floating wind turbines include: jumping off the beach, motion-compensated piers, helicopter hovering, etc., but all three boarding methods have significant disadvantages.

[0004] The method of jumping off the beach by leaning against the ship is different from the traditional fixed wind turbine platform. Since both the floating wind turbine and the operation and maintenance ship have six degrees of freedom movement, there is a possibility of loss of contact between the two, and there is a risk of falling into the water when jumping off the beach. In addition, the relative heave movement between the floating wind turbine and the operation and maintenance ship also increases the risk of jumping off the beach.

[0005] The use of a motion-compensating trestle is a technically feasible solution. The motion-compensating trestle can be arranged on the operation and maintenance ship. Personnel board the motion-compensating trestle from the operation and maintenance ship and then reach the floating wind turbine. The relative motion between the operation and maintenance ship and the floating wind turbine is compensated by the motion-compensating trestle. However, the motion-compensating trestle is expensive. For a single floating wind turbine, the use of this solution will lead to a significant increase in costs.

[0006] The helicopter hovers above the floating wind turbine platform, and the personnel gradually descend to the wind turbine platform through the safety rope. With this solution, the cost of a single boarding is very high, and the number of people that can be transported is limited. In addition, this solution has strict requirements on environmental conditions and high physical and psychological qualities of the passengers.

[0007] In short, there is currently a lack of a safe, economical, foldable boarding device for deep-sea floating wind turbines that can meet the boarding needs of operation and maintenance personnel. Summary of the invention

[0008] In view of the above problems, the purpose of the present invention is to provide a foldable boarding device for a deep-sea floating wind turbine and a method of using the same, so as to solve the current problem of lack of a safe and economical foldable boarding device for a deep-sea floating wind turbine to meet the boarding needs of operation and maintenance personnel.

[0009] To achieve the above object, the present invention adopts the following technical solutions: In a first aspect, the present invention discloses a foldable boarding device for a deep-sea floating wind turbine, which is arranged on a floating wind turbine platform and comprises: A fixed boarding ladder comprises a plurality of stair platforms and a plurality of stair flights, each stair platform being fixed on a side wall of the floating wind turbine platform, and each two adjacent stair platforms being connected by a stair flight; A foldable boarding frame, comprising a fixed section and a folding section, wherein the fixed section of the foldable boarding frame is arranged on the staircase platform at the bottom layer, the folding section and the fixed section of the foldable boarding frame are pivotally connected via a rotating shaft, and a hanging point is arranged at the outer end of the folding section of the foldable boarding frame; A winch is arranged on the deck of the floating wind turbine platform adjacent to the staircase platform at the highest level, and the winch is connected to the folding section of the foldable boarding frame through a cable.

[0010] Furthermore, the fixed section of the foldable boarding frame is always kept in a horizontal state. When the folding section is fully lowered, the folding section is kept in a horizontal state and is at the same height as the fixed section. When the folding section is fully folded, the angle formed by the length direction of the folding section and the extension line of the fixed section is an acute angle. When the winch lowers the folding section of the foldable boarding frame to a horizontal level through the cable, a hanging rope is passed through the hanging point, and the boarding personnel are hung with the hanging rope; the boarding personnel are transported to the folding section by pulling the hanging rope.

[0011] Furthermore, diagonal braces are arranged on the stair platforms.

[0012] Furthermore, several of the stair platforms include multiple floor platforms and multiple intermediate platforms, an intermediate platform is arranged between two adjacent floor platforms, adjacent intermediate platforms and floor platforms are staggered with each other, and the projections of all floor platforms on the sea surface overlap, the projections of all intermediate platforms on the sea surface overlap, and adjacent floor platforms and intermediate platforms are connected by a stair flight.

[0013] Furthermore, safety rings are provided on the side walls of the floating wind turbine platforms of the floor platform and the middle platform for workers to hang on when working on the floor platform.

[0014] Furthermore, guardrails are provided on the stair platform of the fixed boarding ladder and the folding section of the foldable boarding frame.

[0015] Furthermore, the fixed section and the folding section of the foldable boarding frame are both grid structures.

[0016] Furthermore, the hanging point is a hanging ring or a hanging ear.

[0017] Furthermore, the winch is equipped with a remote control.

[0018] In a second aspect, the present invention discloses a method for using the foldable boarding device of the deep-sea floating wind turbine, comprising: Step A: The boarding personnel board the deck of the floating wind turbine platform from the maintenance vessel, including the following steps: Step A1: After the maintenance vessel reaches the designated area and maintains a sufficient safety distance from the floating wind turbine platform, the winch is started, and the winch lowers the folding section of the foldable boarding frame to a horizontal level through the cable; Step A2: a hanging rope is passed through the hanging point, the hanging rope is hung on the boarding person, and the boarding person is transported to the folding section by pulling the hanging rope; Step A3: The boarding personnel walk to the staircase platform at the bottom and board the deck of the floating wind turbine platform via a fixed boarding ladder; Step A4: starting the winch to pull the folding section of the foldable boarding frame upwards through the cable until it is folded; Step B: The boarding personnel return to the operation and maintenance vessel from the deck of the floating wind turbine platform, including the following steps: Step B1: starting a winch, and the winch lowers the folding section of the foldable boarding frame to a horizontal level through a cable; Step B2: The boarding personnel go down from the deck of the floating wind turbine platform to the staircase platform at the lowest level through the fixed boarding ladder, and then walk to the folding section of the foldable boarding frame; Step B3: a hanging rope is threaded through the hanging point, the hanging rope is hung on the boarding personnel, and the boarding personnel is lowered by lowering the hanging rope to enable the boarding personnel to reach the operation and maintenance vessel; Step B4: Start the winch and pull the folding section of the foldable boarding frame upwards through the cable until it is folded.

[0019] Compared with the prior art, the present invention has the following beneficial effects: (I) The present invention discloses a foldable boarding device for a deep-sea floating wind turbine, including a fixed boarding ladder, a foldable boarding frame and a winch. The fixed boarding ladder includes a plurality of stair platforms and a plurality of stair sections. Each stair platform is fixed on the side wall of the floating wind turbine platform, and each two adjacent stair platforms are connected by a stair section. The foldable boarding frame includes a fixed section and a folding section. The fixed section is arranged on the stair platform at the bottom layer. The folding section and the fixed section are pivotally connected by a rotating shaft, and a hanging point is arranged at the outer end of the folding section. The winch is arranged on the deck of the floating wind turbine platform adjacent to the stair platform at the top layer, and the winch is connected to the folding section of the foldable boarding frame by a cable. When the boarding personnel want to board the deck of the floating wind turbine platform from the maintenance ship, the winch lowers the folding section to the horizontal level through the cable, and a hanging rope is passed through the hanging point to hang the boarding personnel with the hanging rope; the boarding personnel are transported to the folding section by pulling the hanging rope. The foldable boarding device for a deep-sea floating wind turbine disclosed by the present invention is safe and economical.

[0020] (II) The present invention discloses a foldable boarding device for deep-sea floating wind turbines. Since the foldable boarding frame is close to the personnel on the maintenance ship in both the vertical and horizontal directions after being lowered, it is easy for the personnel to connect with the hanging point in some way, which significantly improves the safety of boarding. The foldable boarding frame does not directly contact the maintenance ship, avoiding the risk of collision between the two, and further improving the safety of boarding. The various equipment involved in the present invention are relatively simple and economical.

[0021] In addition, the present invention also has the following advantages: 1. The boarding ladder is foldable, so the operation and maintenance vessel can maintain a safe distance from the wind turbine platform for boarding. There is no need to lean against it, which reduces the risk of collision and ensures the safety of the operation and maintenance vessel and the wind turbine platform. 2. Usually, the main deck of a floating wind turbine platform is relatively high, and it is very difficult to directly connect to the hanging point at the height of the main deck. In this solution, after the foldable boarding frame is lowered, the front of the foldable boarding frame is located above the deck of the operation and maintenance ship, and the height is relatively low, so it is easy for personnel to connect to the hanging point in front of the boarding ladder, and the operation is simple. Personnel board on the deck of the operation and maintenance ship to reach the boarding ladder, and the safety of the boarding personnel is guaranteed; 3. After reaching the foldable boarding frame, the personnel will connect the safety rope on themselves to the safety ring under the inter-deck, and then untie the connection between themselves and the hanging point, which further ensures the safety of the personnel; 4. The foldable boarding frame is not in direct contact with the deck of the maintenance ship. Although there is relative movement between the two, the impact on boarding is small. It can adapt to the relative movement between the floating wind turbine and the maintenance ship, and there is no need to fully compensate for the relative movement at all times. 5. The main body of the foldable boarding frame adopts a grid structure, which can reduce the impact of wave impact; 6. The various devices involved in the present invention are relatively simple and economical. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A top view of the foldable boarding device of the deep-sea floating wind turbine provided in Example 1 of the present invention in an unfolded state during operation; Figure 2 It is a side view of the foldable boarding device for the deep-sea floating wind turbine provided in Example 1 of the present invention without guardrails and in a folded state when not in operation; Figure 3 yes Figure 2 Side view with guardrail; Figure 4 It is a side view of the unfolded state of the foldable boarding device of the deep-sea floating wind turbine provided by Example 1 of the present invention when in operation; Figure 5This is a front view of the foldable boarding device for the deep-sea floating wind turbine provided in Example 1 of the present invention.

[0023] Description of reference numerals: 100 - floating wind turbine platform; 1-fixed boarding ladder, 11-staircase platform, 111-floor platform, 112-intermediate platform, 12-stair section, 13-diagonal brace, 14-guardrail; 2-foldable boarding frame, 20-rotating shaft, 21-fixed section, 22-folding section, 23-hanging point; 3- winches, 30- cables. DETAILED DESCRIPTION

[0024] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0025] Embodiment 1: A foldable boarding device Embodiment 1 provides a foldable boarding device, which is arranged on a floating wind turbine platform 100. The structure thereof will be described in detail below with reference to the accompanying drawings.

[0026] refer to Figures 1 to 5 The foldable boarding device includes a fixed boarding ladder 1, a foldable boarding frame 2 and a winch 3.

[0027] The fixed boarding ladder 1 includes a plurality of stair platforms 11 and a plurality of stair steps 12. Each stair platform 11 is fixed to the side wall of the floating wind turbine platform 100. Each two adjacent stair platforms 11 are connected by a stair step 12. The foldable boarding frame 2 includes a fixed section 21 and a folding section 22. The fixed section 21 of the foldable boarding frame 2 is arranged on the staircase platform 11 at the bottom layer. The folding section 22 and the fixed section 21 of the foldable boarding frame 2 are pivotally connected via a rotating shaft 20. A hanging point 23 is arranged at the outer end of the folding section of the foldable boarding frame 2. The winch 3 is disposed on the deck of the floating wind turbine platform 100 adjacent to the staircase platform 11 at the highest level, and the winch 3 is connected to the folding section 2 of the foldable boarding frame 2 via a cable 30 .

[0028] The fixed section 21 of the foldable boarding frame 2 is always kept in a horizontal state. When the foldable section 2 is fully lowered, the foldable section 2 is kept in a horizontal state and is at the same height as the fixed section 21. When the foldable section 2 is fully folded, the angle formed by the length direction of the foldable section 2 and the extension line of the fixed section 21 is an acute angle. When the winch 3 lowers the folding section 22 of the foldable boarding frame 2 to a horizontal level through the cable 30, a hanging rope is passed through the hanging point 23, and the boarding personnel are hung with the hanging rope; the boarding personnel are transported to the stair platform 11 where the folding section 22 is located by pulling the hanging rope.

[0029] Specifically, the stair platforms 11 are each provided with diagonal braces 13 .

[0030] Specifically, the plurality of stair platforms 11 include a plurality of floor platforms 111 and a plurality of intermediate platforms 112, an intermediate platform 112 is arranged between two adjacent floor platforms 111, adjacent intermediate platforms 112 and floor platforms 111 are staggered with each other, and the projections of all floor platforms 111 on the sea surface overlap, the projections of all intermediate platforms 112 on the sea surface overlap, and adjacent floor platforms 111 and intermediate platforms 112 are connected by a stair section 12.

[0031] In order to facilitate workers to hang safety ropes, safety rings are provided on the side walls of the floating wind turbine platform 100 of the floor platform 111 and the middle platform 112 for workers to hang when working on the floor platform 111 .

[0032] When the passengers reach the foldable boarding frame 2, they untie the connection between themselves and the hanging point 23, and walk along the fixed boarding ladder 1 to reach the staircase platform 11 to be operated. The passengers hang the safety rope on the safety ring to ensure the safety of boarding.

[0033] Specifically, guardrails 14 are provided on the stair platform 11 of the fixed boarding ladder 1 and the folding section 22 of the foldable boarding frame 2 .

[0034] In order to reduce the impact of wave impact, the fixed section 21 and the folding section 22 of the foldable boarding frame 2 are both grid structures.

[0035] Specifically, the suspension point 23 is a suspension ring. When a person is boarding, one end of the cable 30 is fixed to the winch 3 and the other end is tied to the person boarding, so that the person boarding is connected to the suspension point 23.

[0036] Preferably, the winch 3 is equipped with a remote control.

[0037] Embodiment 2: A method for using a foldable boarding device Embodiment 2 provides a method for using a foldable boarding device, providing the foldable boarding device of embodiment 1, which is suitable for deep-sea floating wind turbines, and the method comprises the following steps: Step A: The boarding personnel board the deck of the floating wind turbine platform 100 from the maintenance vessel, including the following steps: Step A1: After the maintenance vessel reaches the designated area and keeps a sufficient safety distance from the floating wind turbine platform 100, the winch 3 is started, and the winch 3 lowers the folding section 2 of the foldable boarding frame 2 to a horizontal level through the cable 30; Step A2: a hanging rope is passed through the hanging point 23, the hanging rope is hung on the passenger, and the passenger is transported to the folding section 2 by pulling the hanging rope; Step A3, the passengers walk to the staircase platform 11 at the bottom and board the deck of the floating wind turbine platform 100 via the fixed boarding ladder 1; Step A4: Start the winch 3 and pull the folding section 2 of the foldable boarding frame 2 upwards through the cable 30 until it is folded.

[0038] Step B: The boarding personnel return to the operation and maintenance vessel from the deck of the floating wind turbine platform 100, including the following steps: Step B1: Start the winch 3, and the winch 3 lowers the folding section 2 of the foldable boarding frame 2 to a horizontal level through the cable 30; Step B2: The passengers go down from the deck of the floating wind turbine platform 100 to the stair platform 11 at the bottom through the fixed boarding ladder 1, and then walk to the folding section 22 of the foldable boarding frame 2; Step B3: a hanging rope is passed through the hanging point 23, the hanging rope is hung on the boarding personnel, and the boarding personnel is lowered by lowering the hanging rope to enable the boarding personnel to reach the operation and maintenance vessel; Step B4: Start the winch 3 and pull the folding section 2 of the foldable boarding frame 2 upwards through the cable 30 until it is folded.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A foldable boarding device for a deep-sea floating wind turbine, arranged on a floating wind turbine platform (100), characterized in that: include A fixed boarding ladder (1) comprising a plurality of stair platforms (11) and a plurality of stair steps (12), wherein each stair platform (11) is fixed to a side wall of the floating wind turbine platform (100), and each two adjacent stair platforms (11) are connected via a stair step (12); A foldable boarding frame (2) comprising a fixed section (21) and a folding section (22), wherein the fixed section (21) of the foldable boarding frame (2) is arranged on the staircase platform (11) at the bottom layer, the folding section (22) of the foldable boarding frame (2) is pivotally connected to the fixed section (21) via a rotating shaft (20), and a hanging point (23) is arranged at the outer end of the folding section of the foldable boarding frame (2); A winch (3) is arranged on the deck of the floating wind turbine platform (100) adjacent to the staircase platform (11) at the highest level, and the winch (3) is connected to the folding section (22) of the foldable boarding frame (2) via a cable (30).

2. The foldable boarding device for deep sea floating wind turbine according to claim 1 is characterized in that: The fixed section (21) of the foldable boarding frame (2) always remains in a horizontal state; when the folding section (22) is completely lowered, the folding section (22) remains in a horizontal state and is at the same height as the fixed section (21); when the folding section (22) is completely folded, the angle formed by the length direction of the folding section (22) and the extension line of the fixed section (21) is an acute angle; When the winch (3) lowers the folding section (22) of the foldable boarding frame (2) to a horizontal position via the cable (30), a hanging rope is passed through the hanging point (23) and the boarding personnel are hung with the hanging rope; the boarding personnel are transported to the folding section (22) by pulling the hanging rope.

3. The foldable boarding device for deep sea floating wind turbine according to claim 1, characterized in that: The staircase platforms (11) are all provided with diagonal braces (13).

4. The foldable boarding device for deep sea floating wind turbine according to claim 1, characterized in that: The plurality of stair platforms (11) include a plurality of floor platforms (111) and a plurality of intermediate platforms (112), an intermediate platform (112) is arranged between two adjacent floor platforms (111), adjacent intermediate platforms (112) and floor platforms (111) are mutually staggered, and the projections of all floor platforms (111) on the sea surface overlap, the projections of all intermediate platforms (112) on the sea surface overlap, and adjacent floor platforms (111) and intermediate platforms (112) are connected via a staircase (12).

5. The foldable boarding device for deep sea floating wind turbine according to claim 4 is characterized in that: Safety rings are provided on the side walls of the floating wind turbine platforms (100) of the floor platform (111) and the intermediate platform (112), for workers to hang on when working on the floor platform (111).

6. The foldable boarding device for deep sea floating wind turbine according to claim 1, characterized in that: Guardrails (14) are provided on the staircase platform (11) of the fixed boarding ladder (1) and on the folding section (22) of the foldable boarding frame (2).

7. The foldable boarding device for deep sea floating wind turbine according to claim 1, characterized in that: The fixed section (21) and the folding section (22) of the foldable boarding frame (2) are both grid structures.

8. The foldable boarding device for deep sea floating wind turbine according to claim 1, characterized in that: The lifting point (23) is a lifting ring or a lifting lug.

9. The foldable boarding device for deep sea floating wind turbine according to claim 1, characterized in that: The winch (3) is equipped with a remote control.

10. The method for using the foldable boarding device for deep sea floating wind turbines according to any one of claims 1 to 9, characterized in that: include Step A: The boarding personnel board the deck of the floating wind turbine platform (100) from the maintenance vessel, including the following steps: Step A1: After the maintenance vessel arrives at the designated area and maintains a sufficient safety distance from the floating wind turbine platform (100), the winch (3) is started, and the winch (3) lowers the folding section (22) of the foldable boarding frame (2) to a horizontal level via the cable (30); Step A2: a hanging rope is passed through the hanging point (23), the hanging rope is hung on the passenger, and the passenger is transported to the folding section (22) by pulling the hanging rope; Step A3, the boarding personnel walk to the staircase platform (11) at the bottom and board the deck of the floating wind turbine platform (100) via the fixed boarding ladder (1); Step A4: starting the winch (3) and pulling the folding section (22) of the foldable boarding frame (2) upwards through the cable (30) until it is folded; Step B: The boarding personnel return to the operation and maintenance vessel from the deck of the floating wind turbine platform (100), including the following steps: Step B1: starting the winch (3), and the winch (3) lowers the folding section (22) of the foldable boarding frame (2) to a horizontal position through the cable (30); Step B2: The passengers descend from the deck of the floating wind turbine platform (100) via the fixed boarding ladder (1) to the staircase platform (11) at the bottom, and then walk to the folding section (22) of the foldable boarding frame (2); Step B3: a hanging rope is threaded through the hanging point (23), the hanging rope is hung on the boarding personnel, and the boarding personnel is lowered by lowering the hanging rope, so that the boarding personnel arrives on the operation and maintenance vessel; Step B4: Start the winch (3) and pull the folding section (22) of the foldable boarding frame (2) upwards through the cable (30) until it is folded.

Images