Hoisting tool and mounting method for diverter base

Abstract

A hoisting tool and mounting method for a diverter base, the hoisting tool comprising a hoisting frame (1), a hoisting eye plate (2), a hoisting device, and a hoisting member (4). The hoisting member comprises a hoisting lug (41), a cross base (42), a first upright column (43), and four second upright columns (44). A lower end of the first upright column is fixedly connected at the center of the cross base, and an upper end of the first upright column is fixedly connected to the hoisting lug. Lower ends of the four second upright columns are fixedly connected to end portions of four segments of the cross base, and upper ends of the four second upright columns are each provided with a hoisting hole (45) for mounting a temporary fixing assembly (11). A placement space (46) for placing a diverter base (5) is formed between the first upright column and the four second upright columns. A vertical adjustment bolt (47) is threadedly connected to each of the four segments of the cross base, and a lateral adjustment bolt (48) is threadedly connected to each of the four second upright columns. The hoisting tool can facilitate the centering adjustment of the central axis of a cylinder body of the diverter base with a drilling centerline, thus solving the problem of mounting a device requiring high precision in a high-altitude narrow space such as a moon pool.

Description

A hoisting fixture and installation method for a rotary nozzle base Technical Field

[0001] This invention relates to the field of blowout preventer assembly technology, and in particular to a hoisting fixture and installation method for a blowout preventer base. Background Technology

[0002] A blowout preventer (BOP) is a safety device used to seal the wellhead during well testing, workover, and completion operations to prevent blowouts. It is typically installed on a platform or shipboard drilling rig, above a moon pool, at a high altitude. The installation of one of its components—the BOP base—is crucial. It must be installed after the drilling rig and moon pool structures are completed, once the drilling and production centerline is determined. The BOP base's central axis must be aligned with the drilling and production centerline, with high requirements for concentricity, levelness, and height. The BOP base is a hollow cylindrical structure, and its installation from bottom to top at a high altitude within the moon pool is challenging due to limited space and difficult positioning. Summary of the Invention

[0003] The purpose of this invention is to provide a hoisting fixture and installation method for a rotary nozzle base, which can facilitate the alignment and adjustment of the central axis of the rotary nozzle base cylinder with the drilling and production center line, simplify the workflow, and solve the problem of installing high-precision equipment in narrow spaces at high altitudes such as moon pools.

[0004] To achieve the above objectives, one aspect of the technical solution adopted by the present invention is as follows:

[0005] A hoisting fixture for a rotary nozzle base includes a hoisting frame, a hoisting eye plate, hoisting equipment, and hoisting components. The hoisting components include lifting lugs, a cross base, a first column, and four second columns, the height of which is less than the height of the first column. The first column is vertically arranged, its lower end fixedly connected to the center of the cross base, and its upper end fixedly connected to the lifting lugs. All four second columns are vertically arranged, their lower ends fixedly connected to the ends of the four sides of the cross base, and their upper ends are provided with hoisting holes for installing temporary fixing components. A placement space for the rotary nozzle base is formed between the first column and the four second columns. Vertical adjusting bolts are threaded onto the four sides of the cross base, abutting against the bottom of the rotary nozzle base. Lateral adjusting bolts are threaded onto the four second columns, abutting against the sides of the rotary nozzle base.

[0006] The hoisting frame is fixedly connected to the top surface of the drilling platform, and the hoisting eye plate is fixedly connected to the middle position of the crossbeam of the hoisting frame. The hoisting eye plate is on the same straight line as the drilling center line. The sling of the hoisting equipment passes through the hoisting eye plate and is fixedly connected to the lifting lug. The hoisting equipment can hoist the rotary nozzle base from the moon pool high position from bottom to top to the corresponding installation position on the drilling platform.

[0007] As a preferred embodiment of the above-mentioned rotating nozzle base hoisting fixture, the four sides of the cross base are of equal length.

[0008] As a preferred embodiment of the above-mentioned rotating nozzle base hoisting fixture, it also includes four diagonal braces, which are respectively fixedly connected to the upper end of the first column and the middle of the four sides of the cross base.

[0009] As a preferred embodiment of the above-mentioned rotating nozzle base hoisting fixture, it also includes four ribs, which are respectively fixedly connected between the first column and the four sides of the cross base.

[0010] As a preferred embodiment of the above-mentioned rotating nozzle base hoisting fixture, an annular pad is provided between the bottom of the rotating nozzle base and the vertical adjusting bolt.

[0011] As a preferred embodiment of the aforementioned rotary nozzle base hoisting fixture, two weighing eye plates for hoisting and balancing the load of the object are welded onto the hoisting frame, and the two weighing eye plates are symmetrically arranged on both sides of the hoisting eye plates.

[0012] As a preferred embodiment of the aforementioned jet generator base hoisting fixture, the temporary fixing assembly includes a fixing eye plate and a fixing rope. The fixing eye plate is fixedly connected to the drilling platform, one end of the fixing rope is fixedly connected to the fixing eye plate, and the other end of the fixing rope is fixedly connected to the hoisting hole.

[0013] In addition, to achieve the above objectives, another aspect of the present invention adopts the following technical solution:

[0014] A method for installing a rotary nozzle base, which utilizes the rotary nozzle base hoisting fixtures described above, specifically includes the following steps:

[0015] Step S1: Use I-beams to erect the hoisting frame on the top surface of the drilling rig;

[0016] Step S2: Use a total station to measure the top surface of the drilling platform, determine the position of the drilling and production center line and mark it. Then, according to the mark, weld the hoisting eye plate at the middle position of the crossbeam of the hoisting frame.

[0017] Step S3: Calculate the distance between the web and the drilling centerline, and use a total station to mark the theoretical line for web installation on the drilling platform. Then, mark the web installation positioning points on the drilling platform according to the theoretical line for web installation. Subsequently, mark the web positioning inspection lines at parallel positions on both sides of the web installation positioning points and make marks.

[0018] Step S4: Place the rotary nozzle base in the placement space of the lifting component and make the vertical adjusting bolt abut against the bottom of the rotary nozzle base; then, tighten the lateral adjusting bolts so that the lateral adjusting bolts abut against the sides of the rotary nozzle base; next, measure the lateral adjusting bolts to ensure that the tightening length of each lateral adjusting bolt is the same, thereby making the position of the rotary nozzle base close to the middle of the lifting component.

[0019] Step S5: Transport the rotary nozzle base to the center of the moon pool and connect and fix the web plate to the rotary nozzle base with connecting bolts; then, fix the slings and lugs of the hoisting equipment, and use the hoisting equipment to hoist the rotary nozzle base and web plate together to the vicinity of the corresponding installation position on the drilling platform.

[0020] Step S6: Use temporary fixing components to temporarily fix the hoisting parts to the drilling platform; by turning the lateral adjusting bolts and vertical adjusting bolts respectively, make fine adjustments to the spatial position of the rotary nozzle base in the horizontal and vertical directions so that the web plate corresponds to the web plate installation positioning point in step S3. After checking that there are no errors through the web plate positioning inspection lines on both sides, spot weld the web plate to the corresponding installation position of the web plate on the drilling platform.

[0021] Step S7: Remove the connecting bolts between the web plate and the rotary nozzle base, and remove the temporary fixing components to separate the lifting components from the drilling platform. Lower the rotary nozzle base using the lifting equipment to provide sufficient welding space for the web plate. Then, weld the web plate to the corresponding installation position on the drilling platform.

[0022] Step S8: Use the hoisting equipment to hoist the nozzle base to the vicinity of the corresponding installation position on the drilling platform. Fine-tune the spatial position of the nozzle base using the lateral and vertical adjusting bolts to ensure that the central axis of the nozzle base cylinder is aligned with the drilling centerline. At the same time, align the nozzle base with the web plate. After checking the installation position of the web plate again using the web plate positioning inspection line, connect and fix the web plate to the nozzle base using the connecting bolts.

[0023] Step S9: Loosen the lateral adjusting bolts and the vertical adjusting bolts respectively, and lower the hoisting component using the hoisting equipment to remove the hoisting component, thus completing the operation.

[0024] As a preferred embodiment of the above-mentioned method for installing the rotary nozzle base, in step S2, after the hoisting frame is erected, two weighing eye plates are welded onto the hoisting frame, and the two weighing eye plates are symmetrically arranged on both sides of the hoisting eye plates.

[0025] As a preferred embodiment of the above-mentioned method for installing the rotary nozzle base, in step S4, before placing the rotary nozzle base in the placement space of the hoisting component, an annular pad is placed in the placement space, and the vertical adjusting bolt abuts against the annular pad.

[0026] The advantages of implementing the hoisting fixture and installation method for the rotary nozzle base provided by this invention compared with the prior art are as follows:

[0027] In use, the rotary nozzle base is placed in the placement space of the lifting component. The rotary nozzle base is connected and fixed to the web plate using connecting bolts. The rotary nozzle base and web plate can be lifted together to the corresponding installation position on the drilling platform by using lifting equipment to lift the lifting component. Because the hoisting eyeplate and the drilling centerline are on the same straight line, the central axis of the nozzle base cylinder can be more easily aligned with the drilling centerline during hoisting, thus simplifying the installation process and improving work efficiency. Simultaneously, in the hoisting components, vertical adjusting bolts are threaded onto the four sides of the cross base, abutting against the bottom of the nozzle base. Lateral adjusting bolts are threaded onto the four second columns, abutting against the sides of the nozzle base. Therefore, when the nozzle base is hoisted to the vicinity of its corresponding installation position on the drilling platform, the vertical and horizontal adjustments can be made using the vertical and lateral adjusting bolts before installation. This transforms the alignment of the three-dimensional nozzle base cylinder's central axis with the drilling centerline into a relatively easy in-plane dimensional positioning problem, simplifying the complex and solving the challenge of installing high-precision equipment in narrow, high-altitude spaces such as moonpools. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0029] Figure 1 is a structural schematic diagram of a rotary nozzle base hoisting fixture provided in an embodiment of the present invention;

[0030] Figure 2 is a structural schematic diagram of the hoisting component;

[0031] Figure 3 is a schematic diagram of the structure when the rotary nozzle base is installed on the hoisting component;

[0032] Figure 4 is a flowchart of a rotary nozzle base installation method provided in an embodiment of the present invention;

[0033] Figure 5 is an enlarged view of region A in the structure shown in Figure 4;

[0034] Figure 6 is an enlarged view of region B in the structure shown in Figure 4;

[0035] Figure 7 is an enlarged view of region C in the structure shown in Figure 4.

[0036] The diagram is marked with the following symbols: 1. Lifting frame; 2. Lifting eyeplate; 3. Lifting sling; 4. Lifting component; 41. Lifting lug; 42. Cross base; 43. First column; 44. Second column; 45. Lifting hole; 46. Placement space; 47. Vertical adjusting bolt; 48. Lateral adjusting bolt; 49. Diagonal brace; 410. Rib plate; 5. Sprayer base; 51. Web plate; 6. Drilling platform; 61. Top surface; 7. Drilling centerline; 8. Moon pool; 9. Annular pad; 10. Weighing eyeplate; 11. Temporary fixing assembly; 111. Fixing rope; 112. Fixing eyeplate; 12. Web plate positioning inspection line. Detailed Implementation

[0037] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0038] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. It should be understood that the terms "first," "second," etc., are used in this invention to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this invention, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information.

[0039] Please refer to Figures 1 to 3. This embodiment of the invention provides a hoisting fixture for a rotary nozzle base, comprising a hoisting frame 1, a hoisting eye plate 2, hoisting equipment, and a hoisting component 4. The hoisting component 4 includes a lifting lug 41, a cross base 42, a first column 43, and four second columns 44. The height of the second columns 44 is less than the height of the first column 43. The first column 43 is vertically arranged, with its lower end fixedly connected to the center of the cross base 42, and its upper end fixedly connected to the lifting lug 41. All four second columns 44 are vertically arranged. The lower end of column 44 is fixedly connected to the ends of the four sides of the cross base 42. Each of the four second columns 44 has a lifting hole 45 for installing a temporary fixing assembly 11 at its upper end. A placement space 46 is formed between the first column 43 and the four second columns 44 for placing the rotary nozzle base 5. Vertical adjusting bolts 47 are threaded onto each of the four sides of the cross base 42, and these bolts abut against the bottom of the rotary nozzle base 5. Lateral adjusting bolts 48 are threaded onto each of the four second columns 44, and these bolts abut against the sides of the rotary nozzle base 5. It should be noted that in this embodiment, both the first column 43 and the second columns 44 are preferably channel steel.

[0040] The hoisting frame 1 is fixedly connected to the top surface 61 of the drilling platform 6. The hoisting eye plate 2 is fixedly connected to the middle position of the crossbeam of the hoisting frame 1. The hoisting eye plate 2 and the drilling center line 7 are on the same straight line. The hoisting equipment sling 3 passes through the hoisting eye plate 2 and is fixedly connected to the hoisting lug 41. The hoisting equipment can hoist the rotary nozzle base 5 from the moon pool 8 from bottom to top to the corresponding installation position on the drilling platform 6.

[0041] According to the present invention, the rotary nozzle base hoisting fixture is used such that the rotary nozzle base 5 is placed in the placement space 46 of the hoisting component 4, and the rotary nozzle base 5 is connected and fixed to the web plate 51 by connecting bolts. The rotary nozzle base 5 and the web plate 51 can be hoisted together to the corresponding installation position on the drilling platform 6 by hoisting the hoisting component 4. Since the hoisting eye plate 2 and the drilling center line 7 are on the same straight line, the central axis of the rotary nozzle base 5 cylinder can be more easily aligned with the drilling center line 7 during hoisting, thereby simplifying the installation process and improving work efficiency. Meanwhile, in the hoisting component 4, vertical adjusting bolts 47 are threaded onto the four sides of the cross base 42, and the vertical adjusting bolts 47 abut against the bottom of the rotary nozzle base 5. Lateral adjusting bolts 48 are threaded onto the four second columns 44, and the lateral adjusting bolts 48 are threaded onto the rotary nozzle. Since the sides of the base 5 abut against each other, when the rotary nozzle base 5 is hoisted to the vicinity of the corresponding installation position on the drilling platform 6, the vertical adjustment bolts 47 and the lateral adjustment bolts 48 can be used to adjust the rotary nozzle base 5 in the vertical and horizontal directions before installation. This transforms the alignment adjustment of the cylindrical center axis of the three-dimensional rotary nozzle base 5 with the drilling and production center line 7 into a relatively easy in-plane dimensional positioning problem, simplifying the difficult and solving the problem of installing high-precision equipment in narrow spaces such as the moon pool 8.

[0042] For example, to improve the structural strength of the lifting component 4 and its stability during lifting, the lifting component 4 in this embodiment further includes four diagonal braces 49, which are respectively fixedly connected to the upper end of the first column 43 and the middle of the four sides of the cross base 42; the placement space 46 is formed between the four diagonal braces 49 and the four second columns 44; the lifting component 4 in this embodiment also includes four ribs 410, which are respectively fixedly connected between the first column 43 and the four sides of the cross base 42.

[0043] For example, an annular pad 9 is provided between the bottom of the rotary nozzle base and the vertical adjusting bolt 47. It should be noted that the rotary nozzle base 5 is a precision component, and the surface finish and flatness of its bottom are required. Directly adjusting the force by the vertical adjusting bolt 47 is prone to wear. Therefore, the annular pad 9 can protect the rotary nozzle base 5 on the one hand, and make it easier to adjust the accuracy of the rotary nozzle base 5 on the other hand.

[0044] For example, two weighing eye plates 10 for balancing the load of the lifted object are welded onto the lifting frame 1. The two weighing eye plates 10 are symmetrically arranged on both sides of the lifting eye plate 2. This design allows the corresponding load to be lifted through the weighing eye plates 10 during lifting, thereby balancing the lifted object and preventing tilting and swaying of the spray nozzle base 5 and the lifting component 4 during the lifting process, ensuring stability and safety during the lifting process.

[0045] For example, the temporary fixing assembly 11 includes a fixing plate 112 and a fixing rope 111. The fixing plate 112 is fixedly connected to the drill platform 6, one end of the fixing rope 111 is fixedly connected to the fixing plate 112, and the other end of the fixing rope 111 is fixedly connected to the lifting hole 45. Therefore, the temporary fixing assembly 11 can prevent the lifting component 4 and the rotary nozzle base 5 from shaking and falling off during the lifting process, further improving the stability and safety of the lifting process, and also has the advantage of convenient installation.

[0046] Additionally, referring to Figures 1 to 7, this embodiment of the invention also provides a method for installing a rotary nozzle base, which utilizes the rotary nozzle base hoisting fixture described above, and specifically includes the following steps:

[0047] Step S1: Erect the hoisting frame 1 using an I-beam on the top surface 61 of the drilling rig 6. Before this step, the construction environment inside the chamber must be checked to ensure that it meets the installation requirements and to avoid affecting other operations.

[0048] Step S2: Use a total station to measure the top surface 61 of the drilling platform 6, determine the position of the drilling center line 7 and mark it. Then, according to the mark, weld the hoisting eye plate 2 at the middle position of the crossbeam of the hoisting frame 1.

[0049] Step S3: Calculate the distance between the web 51 and the drilling centerline 7, and use a total station to mark the theoretical line for web installation on the drilling platform 6. Then, mark the web installation positioning points on the drilling platform 6 according to the theoretical line for web installation. Subsequently, mark the web positioning inspection lines 12 at parallel positions on both sides of the web installation positioning points and make marks.

[0050] Step S4: Place the rotary nozzle base 5 in the placement space 46 of the hoisting component 4, and make the vertical adjusting bolt 47 abut against the bottom of the rotary nozzle base 5; then, tighten the lateral adjusting bolt 48 so that the lateral adjusting bolt 48 abuts against the side of the rotary nozzle base 5; next, measure the lateral adjusting bolt 48 to make the tightening length of each lateral adjusting bolt 48 the same, so that the position of the rotary nozzle base 5 is close to the middle position of the hoisting component 4, and prepare for the centering adjustment after the rotary nozzle base 5 is hoisted into place.

[0051] Step S5: Transport the rotary nozzle base 5 to the middle of the moon pool 8, and connect and fix the web plate 51 to the rotary nozzle base 5 with connecting bolts; then, fix the hoisting sling 3 of the hoisting equipment to the hoisting lug 41, and use the hoisting equipment to hoist the rotary nozzle base 5 and the web plate 51 together to the vicinity of the corresponding installation position of the drilling platform 6.

[0052] Step S6: Use the temporary fixing component 11 to temporarily fix the hoisting component 4 to the drilling platform 6; by turning the lateral adjusting bolt 48 and the vertical adjusting bolt 47 respectively, make fine adjustments to the spatial position of the rotary nozzle base 5 in the horizontal and vertical directions so that the web plate 51 corresponds to the web plate installation positioning point in step S3. After checking that there are no errors by checking the web plate positioning inspection lines 12 on both sides, spot weld the web plate 51 to the corresponding installation position of the web plate 51 on the drilling platform 6.

[0053] Step S7: Remove the connecting bolts between the web plate 51 and the rotary nozzle base 5, and remove the temporary fixing assembly 11 to separate the lifting component 4 from the drilling platform 6. Lower the rotary nozzle base 5 using the lifting equipment to provide sufficient welding space for the web plate 51. Then, weld the web plate 51 to the corresponding installation position on the drilling platform 6. It should be noted that symmetrical welding is used in this step to reduce welding deformation.

[0054] Step S8: Use the hoisting equipment to hoist the rotary nozzle base 5 to the vicinity of the corresponding installation position of the rotary nozzle base 5 on the drilling platform 6. Make fine adjustments to the spatial position of the rotary nozzle base 5 using the lateral adjusting bolts 48 and the vertical adjusting bolts 47 to ensure that the central axis of the rotary nozzle base 5 cylinder is aligned with the drilling and production center line 7. At the same time, align the rotary nozzle base 5 with the web plate 51. After checking the installation position of the web plate 51 again using the web plate positioning inspection line 12, connect and fix the web plate 51 to the rotary nozzle base 5 using the connecting bolts.

[0055] Step S9: Loosen the lateral adjusting bolt 48 and the vertical adjusting bolt 47 respectively, and lower the lifting component 4 using the lifting equipment to remove the lifting component 4, thus completing the operation.

[0056] It should be noted that since the rotary nozzle base installation method in this embodiment uses the rotary nozzle base hoisting fixture described above, it has the same beneficial effects as the rotary nozzle base hoisting fixture, and will not be repeated here.

[0057] For example, in step S2, after the hoisting frame 1 is erected, two weighing eye plates 10 are welded onto the hoisting frame 1, and the two weighing eye plates 10 are symmetrically arranged on both sides of the hoisting eye plate 2. This operation allows the corresponding load to be hoisted through the weighing eye plates 10 during hoisting, thereby balancing the lifted object and preventing tilting and swaying of the spray nozzle base 5 and the hoisting component 4 during the hoisting process, ensuring stability and safety during the hoisting process.

[0058] For example, in step S4, before placing the cylinder of the rotary nozzle base 5 into the placement space 46 of the lifting device 4, an annular pad 9 is placed on the placement space 46, and the vertical adjusting bolt 47 abuts against the annular pad 9. This operation can protect the rotary nozzle base 5 on the one hand, and make it easier to adjust the accuracy of the rotary nozzle base 5 on the other hand.

[0059] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0060] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A hoisting fixture for a rotary nozzle base, characterized in that, The system includes a lifting frame, lifting eye plate, lifting equipment, and lifting components. The lifting components include lifting lugs, a cross base, a first column, and four second columns, the height of which is less than the height of the first column. The first column is vertically arranged, its lower end fixedly connected to the center of the cross base, and its upper end fixedly connected to the lifting lugs. All four second columns are vertically arranged, their lower ends fixedly connected to the ends of the four sides of the cross base, and their upper ends each have lifting holes for installing temporary fixing components. A placement space for the rotary nozzle base is formed between the first column and the four second columns. Vertical adjusting bolts are threaded onto the four sides of the cross base, abutting against the bottom of the rotary nozzle base. Lateral adjusting bolts are threaded onto the four second columns, abutting against the sides of the rotary nozzle base. The hoisting frame is fixedly connected to the top surface of the drilling platform, and the hoisting eye plate is fixedly connected to the middle position of the crossbeam of the hoisting frame. The hoisting eye plate is on the same straight line as the drilling center line. The sling of the hoisting equipment passes through the hoisting eye plate and is fixedly connected to the lifting lug. The hoisting equipment can hoist the rotary nozzle base from the moon pool high position from bottom to top to the corresponding installation position on the drilling platform.

2. The hoisting fixture for the rotary nozzle base according to claim 1, characterized in that, The four sides of the cross-shaped base are of equal length.

3. The hoisting fixture for the rotary nozzle base according to claim 1, characterized in that, It also includes four diagonal braces, which are respectively fixedly connected to the upper end of the first column and the middle of the four sides of the cross base.

4. The hoisting fixture for the rotary nozzle base according to claim 1, characterized in that, It also includes four ribs, which are fixedly connected between the first column and the four sides of the cross base.

5. The hoisting fixture for the rotary nozzle base according to claim 1, characterized in that, An annular pad is provided between the bottom of the rotary nozzle base and the vertical adjusting bolt.

6. The hoisting fixture for the rotary nozzle base according to claim 1, characterized in that, The lifting frame is welded with two weighing eye plates for balancing the load of the lifted object, and the two weighing eye plates are symmetrically arranged on both sides of the lifting eye plate.

7. The hoisting fixture for the rotary nozzle base according to claim 1, characterized in that, The temporary fixing assembly includes a fixing plate and a fixing rope. The fixing plate is fixedly connected to the drilling platform, one end of the fixing rope is fixedly connected to the fixing plate, and the other end of the fixing rope is fixedly connected to the hoisting hole.

8. A method for installing a rotary nozzle base, characterized in that, Including the hoisting fixture for the rotary nozzle base as described in any one of claims 1-7, the method for installing the rotary nozzle base includes the following steps: Step S1: Use I-beams to erect the hoisting frame on the top surface of the drilling rig; Step S2: Use a total station to measure the top surface of the drilling platform, determine the position of the drilling and production center line and mark it. Then, according to the mark, weld the hoisting eye plate at the middle position of the crossbeam of the hoisting frame. Step S3: Calculate the distance between the web and the drilling centerline, and use a total station to mark the theoretical line for web installation on the drilling platform. Then, mark the web installation positioning points on the drilling platform according to the theoretical line for web installation. Subsequently, mark the web positioning inspection lines at parallel positions on both sides of the web installation positioning points and make marks. Step S4: Place the rotary nozzle base in the placement space of the lifting component and make the vertical adjusting bolt abut against the bottom of the rotary nozzle base; then, tighten the lateral adjusting bolts so that the lateral adjusting bolts abut against the sides of the rotary nozzle base; next, measure the lateral adjusting bolts to ensure that the tightening length of each lateral adjusting bolt is the same, thereby making the position of the rotary nozzle base close to the middle of the lifting component. Step S5: Transport the rotary nozzle base to the center of the moon pool and connect and fix the web plate to the rotary nozzle base with connecting bolts; then, fix the slings and lugs of the hoisting equipment, and use the hoisting equipment to hoist the rotary nozzle base and web plate together to the vicinity of the corresponding installation position on the drilling platform. Step S6: Use temporary fixing components to temporarily fix the hoisting parts to the drilling platform; by turning the lateral adjusting bolts and vertical adjusting bolts respectively, make fine adjustments to the spatial position of the rotary nozzle base in the horizontal and vertical directions so that the web plate corresponds to the web plate installation positioning point in step S3. After checking that there are no errors through the web plate positioning inspection lines on both sides, spot weld the web plate to the corresponding installation position of the web plate on the drilling platform. Step S7: Remove the connecting bolts between the web plate and the rotary nozzle base, and remove the temporary fixing components to separate the lifting components from the drilling platform. Lower the rotary nozzle base using the lifting equipment to provide sufficient welding space for the web plate. Then, weld the web plate to the corresponding installation position on the drilling platform. Step S8: Use the hoisting equipment to hoist the nozzle base to the vicinity of the corresponding installation position on the drilling platform. Fine-tune the spatial position of the nozzle base using the lateral and vertical adjusting bolts to ensure that the central axis of the nozzle base cylinder is aligned with the drilling centerline. At the same time, align the nozzle base with the web plate. After checking the installation position of the web plate again using the web plate positioning inspection line, connect and fix the web plate to the nozzle base using the connecting bolts. Step S9: Loosen the lateral adjusting bolts and the vertical adjusting bolts respectively, and lower the hoisting component using the hoisting equipment to remove the hoisting component, thus completing the operation.

9. The method for installing the rotary nozzle base according to claim 8, characterized in that, In step S2, after the hoisting frame is erected, two weighing eye plates are welded onto the hoisting frame, and the two weighing eye plates are symmetrically arranged on both sides of the hoisting eye plates.

10. The method for installing the rotary nozzle base according to claim 8, characterized in that, In step S4, before placing the rotary nozzle base in the placement space of the hoisting component, an annular pad is placed in the placement space, and the vertical adjusting bolt abuts against the annular pad.

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