Offshore booster station jacket foundation fine leveling construction device

Abstract

The utility model relates to offshore booster station foundation leveling technical field, and disclose a kind of offshore booster station jacket foundation fine leveling construction device, set in the upper end and one side of jacket body, including counter-hanger beam frame and floating crane, counter-hanger beam frame is made of lifting lug plate and counter-hanger beam. The offshore booster station jacket foundation fine leveling construction device is provided with counter-hanger beam frame, determines the two higher elevation jacket sleeve of adjacent, and two groups of counter-hanger beam frame are respectively installed, and then when the corner point of the remaining jacket sleeve elevation bottom is hung after floating crane, the height of the jacket sleeve elevation bottom is lifted by floating crane, the jacket sleeve elevation bottom is slowly lifted by floating crane, reduces four corner elevation deviation, and the jacket sleeve elevation bottom reaches predetermined height, carries out temporary reinforcement, and construction only needs a small crane ship to cooperate with leveling, greatly reduces ship machine equipment cost and does not need to hoist jacket as a whole when leveling, construction difficulty is smaller, and the degree of danger is reduced.

Description

Technical Field

[0001] This utility model relates to the field of offshore substation foundation leveling technology, specifically a fine leveling construction device for offshore substation jacket foundation. Background Technology

[0002] Offshore substations are voltage-boosting and power-transformation facilities built on fixed platforms at sea. Through high-voltage AC transformers or high-voltage DC converters, they boost the low-voltage electricity (usually 35kV) generated by offshore wind turbines to 220kV and above, and then transmit it to the onshore power grid via submarine cables.

[0003] The "post-pile method" casing-inserted four-pile jacket structure is commonly seen in offshore substation foundations. It typically involves first placing the jacket on the seabed surface for rough leveling, then inserting and driving steel pipe piles, followed by a second fine leveling of the jacket. The fine-tuning and leveling process conventionally uses large floating cranes to lift the jacket foundation as a whole. This requires high performance from the floating cranes, involves long waiting times for the vessels and machinery, is greatly affected by the environment, and makes it difficult to control the on-site window period. If the vessel and machinery schedule is tight, there will be adverse effects such as claims for vessel and machinery due to delays in the schedule. Therefore, there is a need to provide a fine-tuning and leveling construction device for the jacket foundation of offshore substations to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a fine-tuning and leveling construction device for the foundation of offshore substation jacket supports, which solves the problems mentioned in the background.

[0005] This utility model provides the following technical solution: a fine-tuning and leveling construction device for the foundation of a jacket structure for an offshore substation, which is set on the upper end and one side of the jacket structure body, including an anti-lifting beam frame, wherein the anti-lifting beam frame is composed of lifting lugs and an anti-lifting beam; The jacket body consists of a spatial rigid frame structure composed of four hollow jacket sleeves and longitudinal and transverse bars connecting the jacket sleeves. Steel pipe piles are installed inside the jacket sleeves of the jacket body. The anti-lifting beam is installed on the top of the steel pipe piles. The lifting lugs are installed at both ends of the anti-lifting beam. The lower end of the anti-lifting beam is connected to the jacket sleeve. A floating crane is installed on one side of the jacket body.

[0006] Preferably, the four catheter holder sleeves of the catheter holder body are a first catheter holder sleeve, a second catheter holder sleeve, a third catheter holder sleeve, and a fourth catheter holder sleeve, and the first catheter holder sleeve, the second catheter holder sleeve, the third catheter holder sleeve, and the fourth catheter holder sleeve are respectively disposed at the four corners of the catheter holder body.

[0007] Preferably, the upper end of the lifting lug plate has a hole, and the end of the anti-lifting beam passes through the hole.

[0008] Preferably, the lower end of the lifting lug plate is welded and overlapped with the outside of the guide frame sleeve.

[0009] Preferably, there are two sets of anti-hanging beams, and the two sets of anti-hanging beams are respectively set at the higher elevation positions of the two adjacent guide frame sleeves.

[0010] Preferably, the floating crane is hooked at the corner of the remaining guide frame casing elevation.

[0011] Preferably, the height of the lifting lug plate is determined based on the height of the anti-lifting beam to the guide frame sleeve.

[0012] Preferably, the thickness and material of the lifting lug plate are designed according to the weight of the booster station jacket frame.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The offshore substation jacket foundation fine-tuning and leveling construction device uses a reverse-lifting beam frame to identify two adjacent jacket sleeves with higher elevations. Two sets of reverse-lifting beam frames are installed on each sleeve. After the floating crane hooks onto the corner point of the remaining jacket sleeve at the lower elevation, the height of the lower elevation jacket sleeve is determined. The floating crane slowly lifts the lower elevation jacket sleeve, reducing the elevation deviation at the four corners. Once the lower elevation jacket sleeve reaches the predetermined height, temporary reinforcement is carried out. The construction only requires a small crane vessel for leveling, which greatly reduces the cost of ship and machinery equipment. Furthermore, the entire jacket body 2 does not need to be lifted during leveling, making the construction less difficult and reducing the level of danger. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the inverted lifting beam frame of this utility model; Figure 2 This is a schematic diagram of the structure of the lifting lug plate of this utility model; Figure 3 This is a schematic diagram of the structure of the external overlap between the lifting lug plate and the guide frame sleeve of this utility model; Figure 4 This is a schematic diagram of the structure of the offshore substation jacket foundation fine-tuning and leveling construction device under construction.

[0015] In the diagram: 1. Reverse lifting beam; 101. Lifting lug plate; 102. Reverse lifting beam; 2. Jacket frame body; 201. First jacket sleeve; 202. Second jacket sleeve; 203. Third jacket sleeve; 204. Fourth jacket sleeve; 3. Steel pipe pile; 4. Floating crane. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4 A fine-tuning and leveling construction device for the foundation of a jacket structure for an offshore substation is installed on the upper end and one side of the jacket structure body 2, including an anti-lifting beam frame 1, which is composed of a lifting lug plate 101 and an anti-lifting beam 102. The jacket body 2 consists of a spatial rigid frame structure composed of four hollow jacket sleeves and longitudinal and transverse bars connecting the jacket sleeves. Steel pipe piles 3 are installed inside the jacket sleeves of the jacket body 2. The anti-lifting beam 102 is installed on the top of the steel pipe piles 3. The lifting lugs 101 are installed at both ends of the anti-lifting beam 102. The lower end of the anti-lifting beam 102 is connected to the jacket sleeve. A floating crane 4 is installed on one side of the jacket body 2.

[0018] The four jacket sleeves of the jacket body 2 are the first jacket sleeve 201, the second jacket sleeve 202, the third jacket sleeve 203 and the fourth jacket sleeve 204. The first jacket sleeve 201, the second jacket sleeve 202, the third jacket sleeve 203 and the fourth jacket sleeve 204 are respectively set at the four corners of the jacket body 2. The four jacket sleeves set at the four corners are connected to each other by longitudinal and transverse bars to form a spatial rigid frame structure to ensure the stability of the overall structure.

[0019] The upper end of the lifting lug plate 101 has a hole, the end of the anti-lifting beam 102 passes through the hole, and the lower end of the lifting lug plate 101 is welded and overlapped with the outside of the guide frame sleeve. By opening a hole in the lifting lug plate 101, it is easy to effectively connect with the anti-lifting beam 102. The lower end of the lifting lug plate 101 is welded and overlapped with the outside of the guide frame sleeve and is in a vertical state.

[0020] The system includes two sets of reverse-lifting beams 1, each positioned at a higher elevation of one of the adjacent jacket sleeves. A floating crane 4 is hooked to the corner of the remaining jacket sleeve at its lower elevation. This identifies the two adjacent jacket sleeves at their higher elevations, and two sets of reverse-lifting beams 1 are installed on each. Once the floating crane 4 is hooked to the corner of the remaining jacket sleeve at its lower elevation, the crane is positioned to raise the jacket sleeve at its lower elevation. The crane slowly raises the jacket sleeve at its lower elevation, reducing the elevation deviation at the four corners. Once the jacket sleeve at its lower elevation reaches the predetermined height, it is temporarily reinforced. This "reverse-lifting method" requires only a small crane vessel for leveling, significantly reducing equipment costs. Leveling does not require lifting the entire jacket body 2, reducing construction difficulty and risk. In intertidal zones with strong winds and short construction windows, the use of a small crane vessel with reverse-lifting beams 1 for fine-tuning is less restrictive, improving construction efficiency.

[0021] Among them, the height of the lifting lug plate 101 is determined according to the height of the anti-lifting beam 102 to the jacket sleeve, so that when the lifting lug plate 101 is in a vertical state, its lower end can be welded to the jacket sleeve. The thickness and material of the lifting lug plate 101 are designed according to the weight of the jacket body 2 of the booster station, ensuring the overall structural stability of the anti-lifting beam frame 1 during the leveling process.

[0022] The working principle is as follows: During construction, two adjacent jacket sleeves with higher elevations are identified, and two sets of reverse-lifting beams 1 are installed on each. Then, after the floating crane 4 is hooked to the corner of the remaining jacket sleeve at the lower elevation, the height to which the floating crane 4 lifts the jacket sleeve at the lower elevation is determined. The floating crane 4 slowly lifts the jacket sleeve at the lower elevation to reduce the elevation deviation at the four corners. Once the jacket sleeve at the lower elevation reaches the predetermined height, temporary reinforcement is carried out. The construction only requires a small crane vessel for leveling, which greatly reduces the cost of ship and machinery equipment. Leveling does not require lifting the entire jacket body 2, which reduces the construction difficulty and the degree of danger. Moreover, in intertidal sea areas with wind fields and short construction windows, the use of a small ship and machinery in conjunction with the reverse-lifting beams 1 for fine leveling is less restricted, and the construction efficiency is improved.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fine-tuning and leveling construction device for the foundation of an offshore substation jacket, disposed on the upper end and one side of the jacket body (2), characterized in that, It includes an inverted lifting beam frame (1), which is composed of a lifting lug plate (101) and an inverted lifting beam (102); The jacket body (2) consists of a spatial rigid frame structure composed of four hollow jacket sleeves and longitudinal and transverse bars connecting the jacket sleeves. Steel pipe piles (3) are installed inside the jacket sleeves of the jacket body (2). The anti-lifting beam (102) is installed on the top of the steel pipe pile (3). The lifting lugs (101) are installed at both ends of the anti-lifting beam (102). The lower end of the anti-lifting beam (102) is connected to the jacket sleeve. A floating crane (4) is installed on one side of the jacket body (2).

2. The offshore substation jacket foundation fine-tuning and leveling construction device according to claim 1, characterized in that, The four catheter holder sleeves of the catheter holder body (2) are the first catheter holder sleeve (201), the second catheter holder sleeve (202), the third catheter holder sleeve (203) and the fourth catheter holder sleeve (204), which are respectively located at the four corners of the catheter holder body (2).

3. The fine-tuning and leveling construction device for the foundation of an offshore substation jacket as described in claim 2, characterized in that, The upper end of the lifting lug plate (101) has a hole, and the end of the anti-lifting beam (102) passes through the hole.

4. The offshore substation jacket foundation fine-tuning and leveling construction device according to claim 3, characterized in that, The lower end of the lifting lug plate (101) is welded to the outside of the guide frame sleeve.

5. The fine-tuning and leveling construction device for the foundation of an offshore substation jacket as described in claim 1, characterized in that, The reverse-hanging beam frame (1) is provided in two sets, and the two sets of reverse-hanging beam frames (1) are respectively set at the positions of the two adjacent guide frame sleeves with higher elevations.

6. The fine-tuning and leveling construction device for the foundation of an offshore substation jacket as described in claim 1, characterized in that, The floating crane (4) is hooked to the corner of the remaining guide frame casing at the bottom elevation.

7. The fine-tuning and leveling construction device for the foundation of an offshore substation jacket as described in claim 1, characterized in that, The height of the lifting lug plate (101) is determined based on the height of the anti-lifting beam (102) to the guide frame sleeve.

8. The fine-tuning and leveling construction device for the foundation of an offshore substation jacket as described in claim 1, characterized in that, The thickness and material of the lifting lug plate (101) are designed according to the weight of the booster station jacket body (2).

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