A construction method for horizontal lifting cylindrical lifting lugs used in an offshore booster station

Abstract

The present application discloses a construction method for a flat lifting cylindrical lifting lug used in an offshore booster station, which is applied to the field of hoisting of offshore booster stations. This construction method pre-fits and installs the original lifting lugs on the jacket body of the offshore booster station through the flat lifting cylindrical lifting lugs. It can not only unify the original lifting lugs of different specifications, effectively ensure the consistency of the lifting construction method of the jacket body, reduce the construction difficulty, improve the hoisting efficiency, but also facilitate the improvement of the construction method of the offshore booster station and the development of the offshore wind power industry. Moreover, through the flexible buffer cooperation realized by the sling head, quick-connect locking ring and retaining ring, the original surface friction generated during the hoisting of the original lifting lugs is effectively changed to point-line friction, thereby effectively reducing the damage of the lifting tool, reducing the cost of on-site wind power construction, and improving the economic benefits of offshore wind power.

Description

Technical Field

[0001] The present application relates to the field of offshore booster station hoisting, and in particular to a method for constructing a flat-hanging cylindrical lifting lug for an offshore booster station. Background Art

[0002] An offshore substation is a general term for a platform built at sea that is equipped with high-voltage AC transformation, high-voltage DC conversion and other equipment as well as related living facilities. As the on-site control center and "heart" of a wind farm, an offshore substation is responsible for power concentration, power transmission, equipment protection, monitoring and control, and other important tasks.

[0003] In recent years, with the development of the offshore wind power industry, the location of wind turbines has gradually moved from shallow sea areas to deep sea areas, and the design of the conductor frame of the lower foundation of offshore wind power has gradually matured. During the construction of the offshore booster station, the conductor frame will be hoisted first, and then it will be hoisted at the designated position at sea by using the cooperation of the offshore lifting equipment and the lifting ears on the conductor frame. However, the design ears of various design units cannot be unified. Some use hole-type lifting ears, and some use cylinder-type lifting ears. This will not only increase the difficulty of construction and reduce the lifting efficiency of the conductor frame, but also cause damage to the hoisting equipment of the offshore lifting equipment, greatly increasing the cost of offshore wind power construction and reducing the economic benefits of offshore wind power.

[0004] To this end, the present application provides a method for constructing a flat-hanging cylindrical lifting lug for an offshore booster station to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of this application is to solve the problem of increasing the difficulty of lifting construction and increasing the damage to the offshore lifting equipment due to the different designs of the pipe frame lifting lugs. Compared with the prior art, a construction method for a flat-hanging cylindrical lifting lug for an offshore booster station is provided, comprising the following steps:

[0006] S1. Install the flat-lifting cylindrical lifting lug. After the jacket body is transported to the location on the sea surface where it needs to be installed, the lifting construction personnel insert the flat-lifting cylindrical lifting lug into the original lifting lug of the jacket body;

[0007] S2. Lifting coordination,

[0008] The hoisting construction personnel hold one end of the sling head at the lower end of the sling on the offshore lifting equipment, and align the end with the limited locking block with the guide slide, so that the sling head and the limited locking block move along the guide slide and the offset slide to the annular locking groove of the quick-connect lock ring;

[0009] After the hoisting construction personnel feel that one end of the limited locking block of the sling head is in contact with the inner wall of the annular locking groove, they rotate the sling head to make the limited locking block and the annular locking groove rotate and misalign, and then pull the sling head outward, so that the sling head drives the quick-connect locking ring to move in the step tube embedded in the lifting ear through the limited locking block, and stretches the flexible adsorption sleeve and squeezes the linkage sleeve. During the continuous squeezing of the linkage sleeve, under the guidance of the main shunt pipe, the gas in the linkage sleeve enters the inflation deformation sleeve, so that the step tube embedded in the lifting ear is swollen and abuts against the inner wall of the original lifting ear, so that the flat hanging cylindrical lifting ear is fixed in the original lifting ear through the inflation deformation sleeve;

[0010] At this time, the linkage sleeve is continuously contracted, which makes the main shunt pipe inside it abut against each other, and then controls the sling head of the offshore lifting equipment to be energized, so that the power supply of the main shunt pipe is connected through the conduction of the sling head and the annular lock groove, so that the main shunt pipe generates an adsorption magnetic force to perform a locking effect, lock the position of the sling head, and complete the lifting connection between the sling head and the flat lifting barrel lug;

[0011] S3. Hoisting: After all the flat hoisting cylindrical lifting lugs and sling heads on the jacket body are installed, the hoisting construction personnel control the offshore hoisting equipment to lift the jacket body and drive the jacket body to move to the sea surface;

[0012] S4. Installation: The hoisting construction personnel control the offshore hoisting equipment to move the jacket body and install it at the designated location at sea;

[0013] S5. Recover the flat-lifting cylindrical lifting eye. The lifting construction personnel cut off the power supply of the offshore lifting equipment to the sling head, and then push the sling head inward for several times until the quick-connect lock ring is reset and slid under the action of the spiral elastic strip in the flexible adsorption sleeve. At the same time, the linkage sleeve is reset, and the inflation deformation sleeve shrinks to release its contact with the inner wall of the original lifting eye. Then the sling head is rotated so that the limit lock block is aligned with the dislocation slide groove, and the sling head slides out through the annular lock groove and the guide slide groove. Then the flat-lifting cylindrical lifting eye is pulled out from the original lifting eye to complete the recovery of the flat-lifting cylindrical lifting eye. The flat-lifting cylindrical lifting eye is used to pressurize the sea. The original lifting ears on the station's conductor frame body are pre-adapted and installed, which can not only unify the original lifting ears of different specifications, effectively ensure the consistency of the conductor frame body lifting construction method, reduce construction difficulty, and improve lifting efficiency, but also be beneficial to the improvement of offshore booster station construction methods and the development of the offshore wind power industry. In addition, the flexible buffer cooperation achieved by the sling head, quick-connect locking ring and retaining ring can effectively change the surface friction generated during the lifting of the original lifting ears into point-line friction, thereby effectively reducing the damage to the lifting equipment, reducing the cost of onboard wind power construction, and improving the economic benefits of offshore wind power.

[0014] Optionally, it includes an offshore lifting device and a flat-lifting cylindrical lifting ear matched with the offshore lifting device, the flat-lifting cylindrical lifting ear includes an embedded step tube in the lifting ear, the left and right inner walls of the embedded step tube in the lifting ear are fixedly connected with retaining rings, the ends of the two retaining rings close to each other are fixedly connected with linkage sleeves, the end of the linkage sleeve away from the retaining ring is fixedly connected with a quick-connect locking ring, a flexible adsorption sleeve is fixedly connected between the two quick-connect locking rings, the outer end of the embedded step tube in the lifting ear is embedded with a pair of inflation deformation sleeves corresponding to the linkage sleeve, the outer end of the linkage sleeve is fixedly connected with a plurality of main shunt pipes connected thereto, the ends of the main shunt pipes away from the linkage sleeve are extended to the outside of the embedded step tube in the lifting ear, and are connected with the inflation deformation sleeve;

[0015] A lifting sling is installed on the upper end of the offshore lifting equipment, and a plurality of lifting ropes are connected to the lower end of the lifting slings. The lower end of the lifting ropes is fixedly connected with a lifting rope head that matches the flat lifting cylinder lifting ear, and a plurality of limit locking blocks are fixedly connected to the outer end of the lifting rope head. A guiding slide groove that matches the limit locking block is provided at the inner end of the retaining ring, and an annular locking groove is provided at the inner end of the quick-connect locking ring. An end of the quick-connect locking ring close to the retaining ring is provided with a staggered slide groove connected with the annular locking groove, and the staggered slide groove matches the limit locking block. During lifting, if the conductor frame body is shaken by factors such as wind, the inflatable deformation sleeve can first resist and buffer the shaking force, and then the flexible absorption sleeve can further buffer the continuously transmitted force, thereby reducing the torsional force between the lifting rope head and the flat lifting cylinder lifting ear. While ensuring the lifting stability, it also effectively prevents the continuous transmission of the shaking force, thereby reducing the damage caused to various components of the offshore lifting equipment.

[0016] Optionally, a spiral elastic strip is fixedly connected inside the flexible adsorption sleeve, and the flexible adsorption sleeve is filled with an air-intake filler that matches the spiral elastic strip.

[0017] Optionally, the left and right ends of the flexible suction sleeve are fixedly connected with a plurality of suction guide tubes connected thereto, the suction guide tubes extend into the quick-connect locking ring away from one end of the flexible suction sleeve, and are connected to the annular locking groove through one end of the linkage sleeve close to the quick-connect locking ring, the suction guide tubes and the offset sliding grooves are staggered, and when the flexible suction sleeve is stretched along with the quick-connect locking ring, its internal volume increases, so that the air suction filler can absorb the air in the matching gap between the limit locking block and the annular locking groove through the suction guide tubes, so that vacuum adsorption is formed between the limit locking block and the wall of the annular locking groove, thereby effectively improving the stability between the sling head and the quick-connect locking ring, and thereby improving the stability of the lifting connection.

[0018] Optionally, locking columns are fixedly connected to the left and right inner walls of the linkage sleeve, and a conductive core is embedded in the locking column located on the side close to the quick-connect locking ring, and an electromagnetic core is embedded in the locking column located on the side away from the quick-connect locking ring. A contact guide is fixedly connected to the annular locking groove near one end of the linkage sleeve, and the contact guide is electrically connected to the conductive core through a wire. After the two locking columns are abutted, the conductive core is energized to transmit the power to the electromagnetic core, causing the electromagnetic core to generate magnetism, and then adsorb the locking column, thereby stabilizing the shrinkage deformation of the linkage sleeve, thereby improving the stability of the flat-hanging cylindrical lifting ear in the original lifting ear, and effectively preventing the sling head from sliding horizontally in the flat-hanging cylindrical lifting ear. While improving the connection stability between the flat-hanging cylindrical lifting ear and the sling head during lifting, and maintaining the stable lifting of the catheter frame body, it can also effectively reduce the gravity of the catheter frame body, so that the friction force causes damage to the sling head and sling, extending their service life, and reducing the loss of lifting materials.

[0019] Optionally, conductive cables are embedded in the sling head and the sling, and a wear-resistant conductive piece electrically connected to the conductive cable is fixedly connected to the limit lock block near one end of the sling, and the wear-resistant conductive piece cooperates with the contact conductive piece.

[0020] Optionally, the linkage sleeve is filled with insulating gas. The setting of the insulating gas can effectively ensure the quality of the installation steps of the hoisting construction personnel. The adsorption locking can be carried out only after the locking column is fully abutted, which effectively avoids the skewed installation of the sling head, improves the quality of the hoisting connection, and can effectively ensure the safety of the hoisting construction personnel when installing and retrieving the flat-hanging cylindrical lifting ears.

[0021] Optionally, a plurality of adsorption grooves are provided at the inner end of the retaining ring, and the adsorption grooves are spaced apart from the receiving slide grooves, a pneumatic deforming sleeve is fixedly connected in the adsorption groove, a plurality of limiting branch pipes connected thereto are fixedly connected to the end of the linkage sleeve away from the quick-connect locking ring, the limiting branch pipes extend into the retaining ring at the end away from the quick-connect locking ring and are connected to the pneumatic deforming sleeve, an adsorption sheet is fixedly connected to the end of the pneumatic deforming sleeve away from the retaining ring, when the linkage sleeve is deformed, the pneumatic deforming sleeve can be deformed under the conduction of the limiting branch pipe, so that the adsorption sheet is adsorbed on the outer end of the sling head, further limiting and stabilizing the sling head, effectively improving the stability of the connection of the sling head, improving the environmental applicability of the sling head and the flat-sling cylinder lifting ear, being able to effectively cope with severe weather and ensure the safety of construction.

[0022] Optionally, a plurality of elliptical adsorption grooves are formed at the outer end of the flatulence deformation sleeve, and a moisture absorption film is fixedly connected in the elliptical adsorption grooves. When the flatulence deformation sleeve expands and abuts against the inner wall of the original lifting lug, the elliptical adsorption grooves can improve the adsorption friction between the flatulence deformation sleeve and the inner wall of the original lifting lug, enhance the stability of the connection of the flat lifting cylindrical lifting lug, and the moisture absorption film can increase the humidity during adsorption of the elliptical adsorption grooves, improve the fitting degree with the inner wall of the original lifting lug, further guarantee the lifting connection, effectively avoid the lifting connection accident caused by the air pressure damage of the linkage sleeve in the flat lifting cylindrical lifting lug, and improve the safety of construction.

[0023] Optionally, insulating layers are coated on the outer ends of the sling head, the stepped pipe embedded in the lifting lug and the retaining ring, and both the linkage sleeve and the flatulence deformation sleeve are made of insulating materials. The setting of the insulating layer and the insulating material effectively ensures the safety during the construction process.

[0024] Compared with the prior art, the advantages of this application are as follows:

[0025] (1) By pre-fitting and installing the original lifting lug on the jacket body of the offshore booster station through the flat lifting cylindrical lifting lug, not only can the original lifting lugs of different specifications be unified, effectively ensuring the consistency of the lifting construction method of the jacket body, reducing the construction difficulty, improving the lifting efficiency, but also it is beneficial to the improvement of the construction method of the offshore booster station and the development of the offshore wind power industry. Moreover, through the flexible buffer cooperation realized by the sling head, the quick-connect locking ring and the retaining ring, the surface friction generated during the original lifting lug lifting is effectively changed to point-line friction, thereby effectively reducing the damage of the lifting tool, reducing the cost of the on-site wind power construction, and improving the economic benefits of the offshore wind power.

[0026] (2) During lifting, if the jacket body is shaken due to factors such as wind force, the flatulence deformation sleeve can first resist and buffer the shaking force, and then the flexible adsorption sleeve can further buffer the continuously transmitted force, reducing the torsional force between the sling head and the flat lifting cylindrical lifting lug. While ensuring the lifting stability, it also effectively prevents the continuous transmission of the shaking force and reduces the damage caused to each component of the offshore lifting equipment.

[0027] (3) When the flexible adsorption sleeve stretches with the quick-connect locking ring, its internal volume increases, enabling the air suction filler to adsorb the air at the fitting gap between the limit locking block and the annular locking groove through the adsorption guiding pipe, forming a vacuum adsorption between the wall surfaces of the limit locking block and the annular locking groove, effectively improving the stability between the sling head and the quick-connect locking ring, and further enhancing the stability of the lifting connection.

[0028] (4) After the two locking columns are in contact with each other, when the conductive core is energized, it will conduct electricity to the electromagnetic core, causing the electromagnetic core to generate magnetism, which will then adsorb the locking columns, further stabilizing the contraction deformation of the linkage sleeve, improving the stability of the flat cylindrical lifting lug in the original lifting lug, effectively preventing the sling head from sliding horizontally in the flat cylindrical lifting lug, improving the connection stability between the flat cylindrical lifting lug and the sling head during hoisting, maintaining the stable hoisting of the jacket body, and at the same time effectively reducing the gravity of the jacket body, so as to reduce the damage caused by friction to the sling head and the sling, extend its service life, and reduce the loss of hoisting materials.

[0029] (5) The conduction adsorption locking can only be carried out after the locking columns are completely in contact, effectively avoiding the skew installation of the sling head, improving the hoisting connection quality, and effectively ensuring the safety of hoisting construction personnel when installing and retrieving the flat cylindrical lifting lug.

[0030] (6) When the linkage sleeve deforms, the pneumatic deformation sleeve can deform under the conduction of the limiting branch pipe, so that the adsorption sheet adsorbs on the outer end of the sling head, further limiting and stabilizing the sling head, effectively improving the connection stability of the sling head, enhancing the environmental adaptability of the hoisting cooperation between the sling head and the flat cylindrical lifting lug, being able to effectively cope with bad weather, and ensuring the safety guarantee of construction.

[0031] (7) The elliptical adsorption groove can improve the adsorption friction between the inflatable deformation sleeve and the inner wall of the original lifting lug, enhance the connection stability of the flat cylindrical lifting lug, and the moisture absorption film can increase the humidity during the adsorption of the elliptical adsorption groove, improving its fit with the inner wall of the original lifting lug, further guaranteeing the hoisting connection, effectively avoiding hoisting connection accidents caused by air pressure damage to the linkage sleeve in the flat cylindrical lifting lug, and improving the construction safety. Description of the Drawings

[0032] Figure 1 is the construction method flow chart of this application;

[0033] Figure 2 is the main view of the cooperation between the offshore lifting equipment and the jacket body during the construction of this application;

[0034] Figure 3 is the axonometric state diagram during the hoisting construction with the cooperation of the flat cylindrical lifting lug and the sling head of this application;

[0035] Figure 4 is the axonometric drawing of the cooperation between the flat cylindrical lifting lug and the sling head before connection of this application;

[0036] Figure 5 is the internal explosion diagram of the flat cylindrical lifting lug of this application;

[0037] Figure 6 is the main view sectional drawing of the flat cylindrical lifting lug before connection of this application;

[0038] Figure 7 It is an axonometric cross-sectional view of the quick-connect lock ring and the flexible adsorption sleeve of the present application;

[0039] Figure 8 This is a front cross-sectional view of the quick-connect lock ring, the flexible adsorption sleeve, the linkage sleeve and the retaining ring when not connected;

[0040] Figure 9 This is a front cross-sectional view of the flat-hanging cylindrical lifting lug after connection in this application;

[0041] Figure 10 This is a front cross-sectional view of the quick-connect lock ring, flexible adsorption sleeve, linkage sleeve and retaining ring after connection of the present application;

[0042] Figure 11 For this application Figure 10 A partial enlarged view of point A in the middle.

[0043] Description of the numbers in the figure:

[0044] 1 offshore lifting equipment, 101 sling, 2 sling head, 201 limit lock block, 3 lifting ear embedded step tube, 301 inflation deformation sleeve, 4 quick-connect lock ring, 401 annular lock groove, 402 offset slide, 5 flexible adsorption sleeve, 501 spiral elastic strip, 502 adsorption guide pipe, 6 linkage sleeve, 601 main diversion pipe, 602 limit branch pipe, 603 locking column, 7 retaining ring, 701 guide slide, 8 pneumatic deformation sleeve, 9 adsorption sheet, 10 catheter frame body, 11 original lifting ear. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0046] Embodiment 1:

[0047] This application discloses a method for constructing a flat-hanging cylindrical lifting lug for an offshore booster station. Figures 1 - 11 , including the following steps:

[0048] S1. Install the flat-lifting cylindrical lifting lug. After transporting the jacket body 10 to the position where it needs to be installed on the sea surface, the lifting construction personnel insert the flat-lifting cylindrical lifting lug into the original lifting lug 11 of the jacket body 10. The original lifting lug 11 is the original lifting lug fixedly connected to the jacket body 10, which can be a hole-type lifting lug or a cylinder-type lifting lug. The inflation deformation sleeve 301 can abut against the inner wall of the hole-type lifting lug, and can abut against the inner wall of the cylinder of the cylinder-type lifting lug, effectively ensuring its applicability.

[0049] S2. Lifting coordination,

[0050] The hoisting construction personnel hold one end of the sling head 2 at the lower end of the sling 101 on the offshore hoisting equipment 1, and align one end with the limited locking block 201 with the receiving slide groove 701, so that the sling head 2 and the limited locking block 201 move along the receiving slide groove 701 and the offset slide groove 402 to the annular locking groove 401 of the quick-connect lock ring 4;

[0051] After the hoisting construction personnel feel that one end of the limited locking block 201 of the sling head 2 abuts against the inner wall of the annular locking groove 401, the sling head 2 is rotated to make the limited locking block 201 and the annular locking groove 401 rotate and misalign, and then the sling head 2 is pulled outward, so that the sling head 2 drives the quick-connect locking ring 4 to move in the step tube 3 embedded in the lifting ear through the limited locking block 201, and stretches the flexible adsorption sleeve 5 and squeezes the linkage sleeve 6. During the continuous squeezing process of the linkage sleeve 6, under the guidance of the main shunt pipe 601, the gas in the linkage sleeve 6 enters the inflation deformation sleeve 301, so that the step tube 3 embedded in the lifting ear is swollen and abuts against the inner wall of the original lifting ear 11, so that the flat hanging cylindrical lifting ear is fixed in the original lifting ear 11 through the inflation deformation sleeve 301;

[0052] At this time, the linkage sleeve 6 continuously contracts, which makes the main shunt pipe 601 inside it abut against each other, and then controls the sling head 2 of the offshore lifting equipment 1 to be energized, so that the power supply of the main shunt pipe 601 is connected through the conduction of the sling head 2 and the annular locking groove 401, so that the main shunt pipe 601 generates an adsorption magnetic force to perform a locking effect, lock the position of the sling head 2, and complete the lifting connection between the sling head 2 and the flat lifting barrel-shaped lifting ear;

[0053] S3. Lifting. After the flat lifting cylindrical lugs and the sling head 2 on the jacket body 10 are all installed, the lifting construction personnel control the offshore lifting equipment 1 to lift the jacket body 10 and drive the jacket body 10 to move to the sea surface;

[0054] S4. Installation, hoisting construction personnel drive the jacket body 10 to move by controlling the offshore lifting equipment 1 and install it at a designated location at sea;

[0055] S5. Recover the flat-lifting cylindrical lifting lug. The lifting construction personnel cut off the power supply from the offshore lifting equipment 1 to the sling head 2, and then push the sling head 2 inward for several times until the quick-connect lock ring 4 resets and slides under the action of the spiral elastic strip 501 in the flexible adsorption sleeve 5. At the same time, the linkage sleeve 6 resets, and the inflation deformation sleeve 301 contracts to release its abutment against the inner wall of the original lifting lug 11. Then, the sling head 2 is rotated so that the limit lock block 201 is aligned with the dislocation slide groove 402, and the sling head 2 slides out through the annular lock groove 401 and the guide slide groove 701. Then, the flat-lifting cylindrical lifting lug is pulled out from the original lifting lug 11, completing the recovery of the flat-lifting cylindrical lifting lug. The offshore booster station conductor rack body 1 is fixed to the flat-lifting cylindrical lifting lug through the flat-lifting cylindrical lifting lug. 0 is pre-adapted and installed, which can not only unify the original lifting ears 11 of different specifications, effectively ensure the consistency of the lifting construction method of the conductor frame body 10, reduce the construction difficulty, and improve the lifting efficiency, but also be beneficial to the improvement of the construction method of the offshore substation and the development of the offshore wind power industry. In addition, the flexible buffer cooperation achieved by the sling head 2, the quick-connect locking ring 4 and the retaining ring 7 can effectively change the surface friction generated during the lifting of the original lifting ear 11 into point-line friction, reduce the friction between the sling head 2 and the lifting ear, and extend the service life of the sling by more than 1.5 times, thereby effectively reducing the damage of the sling, reducing the cost of wind power construction on the ship, and improving the economic benefits of offshore wind power.

[0056] Finite element strength analysis is used in the design of flat hanging cylindrical lifting ears to ensure their lifting strength.

[0057] The hoisting and connection steps adopt the method of "one plug, two slide in, three turn, and then pull out to power on", which greatly reduces the difficulty of hoisting and connection for hoisting construction personnel and shortens the connection time. While ensuring the stability of the connection, it improves the construction efficiency and saves construction hours. According to the on-site construction feedback, the mounting action of a single lifting ear can save about 1 hour, and the mounting action of a set of conductor racks can save 4-6 hours, which can save a lot of labor costs, ship engine waiting and material costs.

[0058] See also Figures 2 - 11 , including an offshore lifting device 1 and a flat-lifting cylindrical lifting ear matched with the offshore lifting device 1, the flat-lifting cylindrical lifting ear including an embedded step tube 3 in the lifting ear, the left and right inner walls of the embedded step tube 3 in the lifting ear are fixedly connected with retaining rings 7, the two retaining rings 7 are fixedly connected with a linkage sleeve 6 at one end close to each other, the linkage sleeve 6 is fixedly connected with a quick-connect locking ring 4 at one end away from the retaining ring 7, a flexible adsorption sleeve 5 is fixedly connected between the two quick-connect locking rings 4, a pair of inflation deformation sleeves 301 corresponding to the linkage sleeve 6 are embedded at the outer end of the embedded step tube 3 in the lifting ear, a plurality of main shunt pipes 601 connected thereto are fixedly connected at the outer end of the linkage sleeve 6, the ends of the main shunt pipes 601 away from the linkage sleeve 6 all extend to the outside of the embedded step tube 3 in the lifting ear, and are connected with the inflation deformation sleeve 301;

[0059] A lifting device is installed at the upper end of the offshore lifting equipment 1, and a plurality of slings 101 are connected to the lower end of the lifting device. A sling head 2 matched with a flat lifting cylindrical lifting ear is fixedly connected to the lower end of the sling 101, and a plurality of limit lock blocks 201 are fixedly connected to the outer end of the sling head 2. A guide slide groove 701 matched with the limit lock block 201 is provided at the inner end of the retaining ring 7, and an annular locking groove 401 is provided at the inner end of the quick-connect lock ring 4. An offset slide groove 402 connected with the annular locking groove 401 is provided at one end of the quick-connect lock ring 4 close to the retaining ring 7. The offset slide groove 402 cooperates with the limit lock block 201. During lifting, if the conductor frame body 10 is affected by factors such as wind and shakes, the inflatable deformation sleeve 301 can first resist and buffer the shaking force, and then the flexible adsorption sleeve 5 can further buffer the continuously transmitted force, reducing the torsional force between the sling head 2 and the flat lifting cylinder ear. While ensuring the lifting stability, it also effectively prevents the continuous transmission of the shaking force and reduces the damage caused to the various components of the offshore lifting equipment 1.

[0060] The inflation deformation sleeve 301 is made of flexible material and has the function of flexible deformation. It can be effectively applied to the inner holes of the original lifting ears 11 of different sizes, thereby improving the adaptability of the flat lifting cylindrical lifting ears, and can convert the original lifting ears 11 of different specifications into standardized lifting ears for use. It not only reduces the difficulty of connecting the sling head 2 and the difficulty of adapting the offshore lifting equipment 1, but also can effectively ensure the consistency of the subsequent offshore substation construction process control, facilitate the continuous improvement of the construction method, and improve the effectiveness of subsequent offshore wind power construction.

[0061] See also Figures 5 - 11 A spiral elastic strip 501 is fixedly connected to the flexible adsorption sleeve 5 , and the flexible adsorption sleeve 5 is filled with an air-intake filler that matches the spiral elastic strip 501 .

[0062] See also Figures 5 - 11 The left and right ends of the flexible adsorption sleeve 5 are fixedly connected with a plurality of adsorption guide tubes 502 connected thereto. The adsorption guide tubes 502 extend into the quick-connect lock ring 4 away from one end of the flexible adsorption sleeve 5, and are connected to the annular lock groove 401 through one end of the quick-connect lock ring 4 close to the linkage sleeve 6. The adsorption guide tubes 502 are staggered with the offset slide grooves 402. When the flexible adsorption sleeve 5 is stretched with the quick-connect lock ring 4, its internal volume increases, so that the air-absorbing filler can absorb the air in the matching gap between the limiting lock block 201 and the annular lock groove 401 through the adsorption guide tubes 502, so that vacuum adsorption is formed between the limiting lock block 201 and the wall surface of the annular lock groove 401, effectively improving the stability between the sling head 2 and the quick-connect lock ring 4, thereby improving the stability of the lifting connection.

[0063] When the quick-connect locking ring 4 moves under the pulling of the sling head 2 and the limit locking block 201, the flexible adsorption sleeve 5 will produce an elongation effect, the spiral elastic strip 501 will produce an elongation deformation, the space inside the flexible adsorption sleeve 5 will increase, and then the air suction filler can adsorb the gas between the limit locking block 201 and the annular locking groove 401 through the adsorption guide pipe 502, so that a vacuum fitting state is formed, thereby effectively maintaining the adsorption stability between the limit locking block 201 and the annular locking groove 401, locking the position of the sling head 2 and the direction of the limit locking block 201, and effectively ensuring the connection stability of the sling head 2.

[0064] Please refer to Figures 7 - 11 , locking columns 603 are fixedly connected to both the left and right inner walls of the linkage sleeve 6. A conductive core is embedded in the locking column 603 on the side close to the quick-connect locking ring 4, and an electromagnetic core is embedded in the locking column 603 on the side far from the quick-connect locking ring 4. A contact conductor is fixedly connected to one end of the annular locking groove 401 close to the linkage sleeve 6, and the contact conductor is electrically connected to the conductive core through a wire. After the two locking columns 603 are abutted, the energized conductive core will conduct electricity to the electromagnetic core, causing the electromagnetic core to generate magnetism, thereby adsorbing the locking column 603, further stabilizing the contraction deformation of the linkage sleeve 6, improving the stability of the flat lifting cylindrical lifting lug in the original lifting lug 11, and effectively preventing the sling head 2 from sliding horizontally in the flat lifting cylindrical lifting lug. While improving the connection stability between the flat lifting cylindrical lifting lug and the sling head 2 during lifting and maintaining the stable lifting of the jacket body 10, it can also effectively reduce the gravity of the jacket body 10, reduce the damage caused by friction to the sling head 2 and the sling 101, extend its service life, and reduce the loss of lifting materials.

[0065] Please refer to Figures 2 - 11 , conduction cables are embedded in both the sling head 2 and the sling 101. A wear-resistant conduction piece electrically connected to the conduction cable is fixedly connected to one end of the limit locking block 201 close to the sling 101, and the wear-resistant conduction piece cooperates with the contact conductor.

[0066] Please refer to Figures 2 - 11 , the linkage sleeve 6 is filled with insulating gas, such as dry air, nitrogen, sulfur dioxide, and sulfur hexafluoride SF6. The setting of the insulating gas can effectively ensure the quality of the installation steps of the lifting construction personnel. The conduction adsorption locking can only be carried out after the locking column 603 is completely abutted, effectively preventing the skew installation of the sling head 2, improving the lifting connection quality, and effectively ensuring the safety of the lifting construction personnel when installing and recovering the flat lifting cylindrical lifting lug.

[0067] Please refer to Figures 2 - 11A plurality of adsorption grooves are provided at the inner end of the retaining ring 7, and the adsorption grooves are spaced apart from the receiving slide groove 701, and a pneumatic deformation sleeve 8 is fixedly connected in the adsorption groove, and a plurality of limit branch pipes 602 connected thereto are fixedly connected at one end of the linkage sleeve 6 away from the quick-connect lock ring 4, and the limit branch pipe 602 extends into the retaining ring 7 at one end away from the quick-connect lock ring 4, and is connected with the pneumatic deformation sleeve 8, and an adsorption sheet 9 is fixedly connected at one end of the pneumatic deformation sleeve 8 away from the retaining ring 7. When the linkage sleeve 6 is deformed, the pneumatic deformation sleeve 8 can be deformed under the conduction of the limit branch pipe 602, so that the adsorption sheet 9 is adsorbed on the outer end of the sling head 2, and the sling head 2 is further limited and stabilized, thereby effectively improving the stability of the connection of the sling head 2, and improving the environmental applicability of the sling head 2 and the flat-hanging cylinder-shaped lifting ear. It can effectively cope with severe weather and ensure the safety of construction.

[0068] See also Figures 1 - 11 A plurality of elliptical adsorption grooves are provided at the outer end of the inflation deformation sleeve 301, and a hygroscopic film is fixedly connected inside the elliptical adsorption groove. When the inflation deformation sleeve 301 expands and abuts against the inner wall of the original lifting ear 11, the elliptical adsorption groove can increase the adsorption friction between the inflation deformation sleeve 301 and the inner wall of the original lifting ear 11, thereby improving the stability of the connection between the flat hanging cylindrical lifting ear, and the hygroscopic film can increase the humidity of the elliptical adsorption groove during adsorption, thereby improving its fit with the inner wall of the original lifting ear 11, further ensuring the lifting connection, effectively avoiding the lifting connection accidents caused by the air pressure damage of the linkage sleeve 6 in the flat hanging cylindrical lifting ear, and improving the safety of construction.

[0069] See also Figures 1 - 11 The sling head 2, the step tube 3 embedded in the lifting ear and the outer end of the retaining ring 7 are coated with an insulating layer. The linkage sleeve 6 and the inflation deformation sleeve 301 are made of insulating materials, which can be made of composite materials such as silicone, rubber, and plastic. The setting of the insulating layer and insulating material effectively ensures the safety during the construction process.

[0070] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed in the present application according to the technical solution and its improved conception, which should be covered by the protection scope of the present application.

Claims

1. A construction method for a flat-lifting cylindrical lifting lug used in an offshore booster station, characterized in that, The steps include: S1. Installing the flat-hanging cylindrical lifting lug. After the jacket body (10) is transported to the location on the sea surface where it needs to be installed, the installation construction personnel insert the flat-hanging cylindrical lifting lug into the original lifting lug (11) of the jacket body (10); S2. Lifting coordination, The lifting construction personnel hold one end of the sling head (2) at the lower end of the sling (101) on the offshore lifting equipment (1), and align one end with the limit lock block (201) with the guide slide groove (701), so that the sling head (2) and the limit lock block (201) move along the guide slide groove (701) and the offset slide groove (402) into the annular lock groove (401) of the quick-connect lock ring (4); After the lifting construction personnel feel that one end of the sling head (2) with the limit lock block (201) is in contact with the inner wall of the annular lock groove (401), the sling head (2) is rotated so that the limit lock block (201) is rotated and locked in the annular lock groove (401), and then the sling head (2) is pulled outward so that the sling head (2) drives the quick-connect lock ring (4) to move in the step tube (3) embedded in the lifting ear through the limit lock block (201), and stretches the flexible adsorption sleeve (5) and squeezes the linkage sleeve (6). During the continuous squeezing of the linkage sleeve (6), under the guidance of the main diversion pipe (601), the gas in the linkage sleeve (6) enters the inflation deformation sleeve (301), so that the step tube (3) embedded in the lifting ear is expanded and in contact with the inner wall of the original lifting ear (11), so that the flat lifting cylindrical lifting ear is fixed in the original lifting ear (11) through the inflation deformation sleeve (301); At this time, the linkage sleeve (6) continuously contracts, causing the main shunt pipe (601) inside it to abut against each other, and then the offshore lifting equipment (1) is controlled to energize the sling head (2), so that the power supply of the main shunt pipe (601) is connected through the conduction between the sling head (2) and the annular locking groove (401), so that the main shunt pipe (601) generates an adsorption magnetic force to perform a locking effect, thereby locking the position of the sling head (2), so that the sling head (2) and the flat lifting barrel-shaped lifting ear are hoisted and connected; S3. Hoisting. After all the flat hoisting cylindrical lifting lugs and the lifting cable heads (2) on the jacket body (10) are installed, the hoisting construction personnel control the offshore hoisting equipment (1) to hoist the jacket body (10) and drive the jacket body (10) to move to the sea surface; S4. Installation, the hoisting construction personnel drive the jacket body (10) to move by controlling the offshore hoisting equipment (1) and install it at a designated location at sea; S5. Recover the flat-lifting cylindrical lifting eye. The lifting construction personnel cut off the power supply from the offshore lifting equipment (1) to the sling head (2), and then push the sling head (2) inward for several times until the quick-connect lock ring (4) is reset and slid under the action of the spiral elastic strip (501) in the flexible adsorption sleeve (5). At the same time, the linkage sleeve (6) is reset, and the inflation deformation sleeve (301) contracts to release its contact with the inner wall of the original lifting eye (11). Then, the sling head (2) is rotated to align the limit lock block (201) with the dislocation slide groove (402), and the sling head (2) is slid out through the annular lock groove (401) and the guide slide groove (701). Then, the flat-lifting cylindrical lifting eye is pulled out from the original lifting eye (11), and the recovery of the flat-lifting cylindrical lifting eye is completed.

2. The construction method of the flat lifting cylindrical lifting lug for an offshore booster station according to claim 1, wherein, The invention comprises an offshore lifting device (1) and a flat-lifting cylindrical lifting eye matched with the offshore lifting device (1), wherein the flat-lifting cylindrical lifting eye comprises a lifting ear embedded step tube (3), the left and right inner walls of the lifting ear embedded step tube (3) are fixedly connected with retaining rings (7), the two retaining rings (7) are fixedly connected with a linkage sleeve (6) at the ends close to each other, the linkage sleeve (6) is fixedly connected with a quick-connect locking ring (4) at the ends away from the retaining rings (7), a flexible adsorption sleeve (5) is fixedly connected between the two quick-connect locking rings (4), a pair of inflation deformation sleeves (301) corresponding to the linkage sleeve (6) are embedded at the outer ends of the lifting ear embedded step tube (3), a plurality of main shunt pipes (601) connected thereto are fixedly connected at the outer ends of the linkage sleeves (6), the ends of the main shunt pipes (601) away from the linkage sleeves (6) are extended to the outside of the lifting ear embedded step tube (3) and are connected to the inflation deformation sleeves (301); A lifting sling is installed at the upper end of the offshore lifting equipment (1), and a plurality of slings (101) are connected to the lower end of the lifting sling, and a sling head (2) matched with a flat lifting cylindrical ear is fixedly connected to the lower end of the sling (101), and a plurality of limit locking blocks (201) are fixedly connected to the outer end of the sling head (2), and a guide groove (701) matched with the limit locking block (201) is provided at the inner end of the retaining ring (7), and an annular locking groove (401) is provided at the inner end of the quick-connect lock ring (4), and a dislocation groove (402) connected with the annular locking groove (401) is provided at one end of the quick-connect lock ring (4) close to the retaining ring (7), and the dislocation groove (402) matches with the limit locking block (201).

3. The construction method of a flat lifting cylindrical lifting lug for an offshore booster station according to claim 2, characterized in that, The flexible adsorption sleeve (5) is fixedly connected with a spiral elastic strip (501), and the flexible adsorption sleeve (5) is filled with an air-absorbing filler that matches the spiral elastic strip (501).

4. The construction method of the horizontal lifting cylindrical lifting lug for an offshore booster station according to claim 3, characterized in that, Both left and right ends of the flexible adsorption sleeve (5) are fixedly connected to a plurality of adsorption guide tubes (502) connected thereto. The adsorption guide tubes (502) extend from one end away from the flexible adsorption sleeve (5) into the quick-connect lock ring (4) and are connected to the annular lock groove (401) via one end close to the linkage sleeve (6) of the quick-connect lock ring (4). The adsorption guide tubes (502) and the offset slide grooves (402) are arranged in a staggered manner.

5. A construction method of a flat lifting cylindrical lifting lug for an offshore booster station according to claim 2, characterized in that The left and right inner walls of the linkage sleeve (6) are both fixedly connected with locking columns (603); a conductive core is embedded in the locking column (603) located on the side close to the quick-connect lock ring (4); an electromagnetic core is embedded in the locking column (603) located on the side away from the quick-connect lock ring (4); a contact guide is fixedly connected to one end of the annular lock groove (401) close to the linkage sleeve (6), and the contact guide is electrically connected to the conductive core through a wire.

6. The construction method of a flat lifting cylindrical lifting lug for an offshore booster station according to claim 5, characterized in that, Conductive cables are embedded in the sling head (2) and the sling (101), and a wear-resistant conductive sheet electrically connected to the conductive cable is fixedly connected to one end of the limit lock block (201) close to the sling (101), and the wear-resistant conductive sheet cooperates with the contact conductive sheet.

7. A construction method of a flat-lifting cylindrical lifting lug for an offshore booster station according to claim 6, characterized in that, The linkage sleeve (6) is filled with insulating gas.

8. A construction method of a flat-lifting cylindrical lifting lug for an offshore booster station according to claim 2, characterized in that A plurality of adsorption grooves are provided at the inner end of the retaining ring (7), and the adsorption grooves are spaced apart from the guide slide groove (701); a pneumatic deformation sleeve (8) is fixedly connected in the adsorption groove; an end of the linkage sleeve (6) away from the quick-connect lock ring (4) is fixedly connected to a plurality of limit branch pipes (602) connected thereto; an end of the limit branch pipe (602) away from the quick-connect lock ring (4) extends into the retaining ring (7) and is connected to the pneumatic deformation sleeve (8); an end of the pneumatic deformation sleeve (8) away from the retaining ring (7) is fixedly connected to an adsorption sheet (9).

9. The construction method of a flat-lifting cylindrical lifting lug for an offshore booster station according to claim 2, characterized in that The outer end of the inflation deformation sleeve (301) is provided with a plurality of elliptical adsorption grooves, and a moisture absorbing film is fixedly connected inside the elliptical adsorption grooves.

10. The construction method of a flat lifting cylindrical lifting lug for an offshore booster station according to claim 2, characterized in that, The outer ends of the sling head (2), the lifting ear embedded step tube (3) and the retaining ring (7) are all coated with an insulating layer, and the linkage sleeve (6) and the inflation deformation sleeve (301) are both made of insulating material.

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