A jacket with a grouting plug

Abstract

The present application discloses a jacket with a grouting plugging device applied to the field of jackets. In this solution, a sealed space is formed by the grouting plugging assembly and the calibration end, and the water inside is drained by cooperating with a drainage pump. The pressure of seawater makes the grouting plugging assembly and the calibration end combine more stably. A dry space is more suitable for the curing of cement slurry. A shrinkage sleeve is tightly wrapped around the outer wall of the inserted leg. Cement slurry is poured into the insertion hole through a grouting device and a grouting pipe. The cement slurry first accumulates above the shrinkage sleeve. When the pressure sensor senses that the cement slurry above the shrinkage sleeve is full, the cement slurry enhancer in the shrinkage sleeve is released into the liquid storage cavity, reducing the connection tightness between the shrinkage sleeve and the inserted leg. The residual cement slurry in the grouting pipe falls under the shrinkage sleeve under the action of gravity, reducing the waste of cement slurry and improving the stability of the jacket at the same time.

Description

Technical Field

[0001] The present application relates to the field of jacket platforms, and particularly to a jacket platform with a grouting plugging device. Background Art

[0002] A jacket platform is composed of hollow leg columns and horizontal and vertical bars connecting the leg columns. A fixed platform is lapped on it and can be used for offshore oil exploitation.

[0003] Currently, in order to make full use of the energy of the ocean, people have tried to build offshore power stations and mining stations on the sea, which all require stable working platforms. Therefore, jacket platforms have received more attention. When installing a jacket platform, it is necessary to pour cement slurry into the annular gap between the pile and the jacket. However, due to the high height of the jacket platform, it is difficult to control the amount of cement slurry during pouring, resulting in waste of cement slurry and affecting the strength of the pile body at the same time.

[0004] In response to this, we have tried to carry out segmented pouring of the jacket platform and use the residual cement slurry inside the pouring pipe to fill the jacket platform, and proposed a jacket platform with a grouting plugging device to solve the above problems. Summary of the Invention

[0005] The purpose of this application is to reduce the waste of cement slurry and improve the stability of the jacket. Compared with the prior art, a jacket with a grouting plugging device is provided, including a jacket. Multiple insertion legs are provided at the lower end of the jacket, and a platform is provided at the upper end of the jacket. Fixed piles corresponding to the positions of the insertion legs are provided below the insertion legs. The lower ends of the fixed piles are buried under the seabed. It is characterized in that a grouting plugging assembly is provided on the outer wall of the upper end of the insertion leg, and a calibration end corresponding to the position of the grouting plugging assembly is provided at the upper end of the fixed pile. An insertion hole is opened at the upper end of the fixed pile, and a shrinkage sleeve is provided on the inner wall of the insertion hole. The diameter of the shrinkage sleeve gradually decreases from top to bottom. The shrinkage sleeve is made of an elastic material. Multiple solenoid valves are provided at the upper end of the shrinkage sleeve. A liquid storage cavity is opened inside the shrinkage sleeve, and a cement slurry enhancer is filled inside the liquid storage cavity. A liquid storage cavity corresponding to the position of the insertion hole is opened inside the fixed pile. The liquid storage cavity is communicated with the liquid storage cavity through the solenoid valve. A grouting pipe is connected to the jacket through a fixing device. The upper end of the grouting pipe penetrates through the platform and extends to its upper end. The upper end of the grouting pipe is connected to a grouting device. The lower end of the grouting pipe penetrates through the grouting plugging assembly and extends to its lower end. A pressure sensor is provided at the lower end of the grouting plugging assembly. The pressure sensor is electrically connected to the grouting device. A drainage pump communicated to the inside of the insertion hole is provided inside the fixed pile. A sealed space is formed by the grouting plugging assembly and the calibration end, and the water inside is drained away by the drainage pump. The pressure of the seawater makes the combination of the grouting plugging assembly and the calibration end more stable. At the same time, a dry space is more suitable for the perfusion of cement slurry. The shrinkage sleeve is tightly wrapped around the outer wall of the insertion leg. Cement slurry is poured into the insertion hole through the grouting device and the grouting pipe. The cement slurry first accumulates above the shrinkage sleeve. When the pressure sensor senses that the cement slurry above the shrinkage sleeve is full, it immediately controls the grouting device to stop working. At the same time, it controls the solenoid valve to release the cement slurry enhancer inside the shrinkage sleeve into the liquid storage cavity, so that the shrinkage sleeve reduces the connection tightness between it and the insertion leg. The residual cement slurry inside the grouting pipe falls into the lower part of the shrinkage sleeve under the action of gravity, making the insertion leg and the insertion hole form a whole, reducing the waste of cement slurry and improving the stability of the jacket at the same time.

[0006] Further, multiple anti-slip grooves are opened on the inner wall of the insertion hole. The inner wall of the anti-slip groove is polished to obtain a rough surface. The anti-slip grooves are used to improve the connection tightness between the cement slurry and the insertion hole, and improve the stability and safety of the jacket.

[0007] Further, multiple reinforcing holes communicated to the inside of the liquid storage cavity are opened on the inner wall of the insertion hole. The inner diameter of the reinforcing holes gradually decreases from inside to outside. A plugging cone is movably provided inside the reinforcing holes. The plugging cone is adapted to the size of the reinforcing holes, and the inner diameter gradually decreases from inside to outside. The reinforcing holes and the plugging cone can prevent the cement slurry from entering the reinforcing holes and causing blockage when pouring the cement slurry.

[0008] Furthermore, multiple liquid guide grooves are provided on the outer wall of the plugging cone. The left end of the liquid guide groove extends to the left side wall of the plugging cone, and there is a reserved section of 2-5 mm between the right end of the liquid guide groove and the right side wall of the plugging cone. The cement slurry enhancer only needs to push the plugging cone out a short distance, and the cement slurry enhancer can enter the cement slurry along the liquid guide groove. At the same time, the plugging cone can extend into the cement slurry, making the mixing of the cement slurry enhancer and the cement slurry more uniform.

[0009] Furthermore, a guiding groove is provided at the lower end of the grouting plugging assembly. The guiding groove is in the shape of a funnel with an opening downward, and a limiting groove corresponding to the position of the inserting leg is provided at the lower end of the guiding groove. The guiding groove can make it easier for the inserting leg to enter the inserting hole, improving the convenience of the jacket installation. At the same time, the limiting groove can limit the fixing pile, improving the stability and safety of the fixing pile.

[0010] Furthermore, the upper end of the calibration end is adapted to the guiding groove structure. An annular groove flap is provided on the outer wall of the calibration end, and a negative pressure annular groove corresponding to the position of the annular groove flap is provided on the inner wall of the guiding groove. The tight combination of the two is achieved by the adaptation of the calibration end to the guiding groove structure.

[0011] Furthermore, a micro liquid pump is provided inside the grouting plugging assembly. The micro liquid pump is connected to the negative pressure annular groove. The negative pressure annular groove and the annular groove flap are combined into a complete annular cavity, and the liquid inside is completely pumped out by cooperating with the micro liquid pump. The external seawater pressure makes the calibration end and the grouting plugging assembly more tightly combined.

[0012] Furthermore, waterproof layers are provided on both the outer wall of the calibration end and the inner wall of the guiding groove. The waterproof layer is made of rubber material. The waterproof layer makes the combination of the outer wall of the calibration end and the guiding groove tighter, reducing the infiltration of external seawater, improving the purity of the cement slurry, and thus improving the strength of the cement slurry.

[0013] Furthermore, a gap is left between the inserting leg and the inserting hole. When the inserting leg is inside the inserting hole, the inserting leg is tightly connected to the shrinkage sleeve. The shrinkage sleeve can divide the inserting hole into two parts. After the upper part is filled, the shrinkage sleeve is relaxed, and the lower part is filled with the residual cement slurry inside the grouting pipe, reducing the use of cement slurry.

[0014] Furthermore, a vibration module corresponding to the position of the inserting hole is provided inside the fixing pile. The vibration module is electrically connected to the grouting device. The vibration module can vibrate the cement slurry, making the cement slurry compacted, reducing the internal cavity, and improving the strength of the cement slurry.

[0015] Compared with the prior art, the advantages of this application are as follows:

[0016] (1) A sealed space is formed by the grouting plugging component and the calibration end. In cooperation with the drainage pump, the water inside is drained away. The pressure of the seawater makes the combination of the grouting plugging component and the calibration end more stable. At the same time, the dry space is more suitable for the perfusion of cement slurry. The shrinkage sleeve is tightly wrapped around the outer wall of the insertion leg. Cement slurry is poured into the insertion hole through the grouting device and the grouting pipe. The cement slurry first accumulates above the shrinkage sleeve. When the pressure sensor senses that the cement slurry above the shrinkage sleeve is full, the grouting device is immediately controlled to stop working. At the same time, the solenoid valve is controlled to release the cement slurry enhancer in the shrinkage sleeve into the liquid storage cavity, reducing the connection tightness between the shrinkage sleeve and the insertion leg. The residual cement slurry in the grouting pipe falls into the lower part of the shrinkage sleeve under the action of gravity, making the insertion leg and the insertion hole form a whole, reducing the waste of cement slurry and improving the stability of the jacket at the same time.

[0017] (2) The reinforcing holes with diameters decreasing from inside to outside cooperate with the plugging cone, which can prevent the cement slurry from entering the reinforcing holes and causing blockage during the perfusion of cement slurry. As long as the cement slurry enhancer pushes the plugging cone out a short distance, the cement slurry enhancer can enter the cement slurry along the liquid guiding groove. At the same time, the plugging cone can extend into the cement slurry, making the mixing of the cement slurry enhancer and the cement slurry more uniform.

[0018] (3) The negative pressure ring groove and the annular groove petals are combined to form a complete annular cavity. In cooperation with the micro liquid pump, all the liquid inside is pumped out. The pressure of the external seawater makes the calibration end and the grouting plugging component combine more tightly.

[0019] (3) The shrinkage sleeve can divide the insertion hole into two parts. After the upper part is filled, the shrinkage sleeve is relaxed and the residual cement slurry in the grouting pipe is used to complete the filling of the lower part, reducing the use of cement slurry. Brief Description of the Drawings

[0020] Figure 1 is a schematic diagram of the main structure of this application;

[0021] Figure 2 is an exploded view of the main structure of this application;

[0022] Figure 3 is a schematic diagram of the structure at the joint of the fixed pile and the calibration end of this application;

[0023] Figure 4 is a cross-sectional view of the fixed pile of this application;

[0024] Figure 5 is Figure 4 the enlarged view at A in

[0025] Figure 6 is a cross-sectional view of the shrinkage sleeve of this application;

[0026] Figure 7 Schematic diagram of the grouting plugging assembly and calibration end of the present application;

[0027] Figure 8 Cross-sectional view of the grouting plugging assembly of the present application;

[0028] Figure 9 Schematic diagram of the plugging cone of the present application;

[0029] Figure 10 Cross-sectional view of the joint of the plugging leg and the fixing pile of the present application in the grouting state;

[0030] Figure 11 is Figure 10 Enlarged view of part B in

[0031] Figure 12 Cross-sectional view of the joint of the plugging leg and the fixing pile of the present application in the state of stopping grouting;

[0032] Figure 13 is Figure 12 Enlarged view of part C in

[0033] Explanation of the reference numerals in the figure:

[0034] 1, Jacket; 11, Plugging leg; 2, Grouting pipe; 3, Fixing pile; 31, Plugging hole; 32, Liquid storage cavity; 33, Plugging cone; 331, Liquid guiding groove; 4, Grouting plugging assembly; 41, Guide groove; 42, Limit groove; 43, Negative pressure ring groove; 5, Platform; 7, Calibration end; 71, Annular groove flap; 8, Shrink sleeve; 81, Solenoid valve; 82, Liquid storage cavity. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0036] Embodiment 1:

[0037] The present application discloses a jacket with a grouting plugging device. Please refer to Figure 1-6, including a jacket 1. Multiple insertion legs 11 are provided at the lower end of the jacket 1, and a platform 5 is provided at the upper end of the jacket 1. Fixed piles 3 corresponding to the positions of the insertion legs 11 are provided below the insertion legs 11. The lower ends of the fixed piles 3 are buried under the seabed. It is characterized in that a grouting plugging assembly 4 is provided on the outer wall of the upper end of the insertion leg 11, a calibration end 7 corresponding to the position of the grouting plugging assembly 4 is provided at the upper end of the fixed pile 3, an insertion hole 31 is opened at the upper end of the fixed pile 3, a shrinkage sleeve 8 is provided on the inner wall of the insertion hole 31, the diameter of the shrinkage sleeve 8 gradually decreases from top to bottom, the shrinkage sleeve 8 is made of an elastic material, multiple solenoid valves 81 are provided at the upper end of the shrinkage sleeve 8, a liquid storage cavity 82 is opened inside the shrinkage sleeve 8, and a cement slurry enhancer is filled inside the liquid storage cavity 82. A liquid storage cavity 32 corresponding to the position of the insertion hole 31 is opened inside the fixed pile 3. The liquid storage cavity 82 is communicated with the liquid storage cavity 32 through the solenoid valve 81. A grouting pipe 2 is connected to the jacket 1 through a fixing device. The upper end of the grouting pipe 2 penetrates through the platform 5 and extends to its upper end. The upper end of the grouting pipe 2 is connected with a grouting device. The lower end of the grouting pipe 2 penetrates through the grouting plugging assembly 4 and extends to its lower end. A pressure sensor is provided at the lower end of the grouting plugging assembly 4, and the pressure sensor is electrically connected with the grouting device. A drainage pump communicating to the inside of the insertion hole 31 is provided inside the fixed pile 3.

[0038] Please refer to Figure 4-5 , multiple anti-slip grooves are opened on the inner wall of the insertion hole 31, and the inner walls of the anti-slip grooves are polished to obtain a rough surface. The anti-slip grooves are used to improve the connection tightness between the cement slurry and the insertion hole 31, and improve the stability and safety of the jacket 1.

[0039] Multiple reinforcing holes communicating to the inside of the liquid storage cavity 32 are opened on the inner wall of the insertion hole 31. The inner diameters of the reinforcing holes gradually decrease from inside to outside. A plugging cone 33 is movably provided inside the reinforcing holes, and the plugging cone 33 is adapted to the size of the reinforcing holes.

[0040] Specifically, the reinforcing holes with inner diameters gradually decreasing from inside to outside cooperate with the plugging cone 33, which can prevent the cement slurry from entering the reinforcing holes and causing blockage during the pouring of the cement slurry. When the shrinkage sleeve 8 releases the cement slurry enhancer into the liquid storage cavity 32, the cement slurry enhancer can push out the plugging cone 33 and mix the cement slurry enhancer with the cement slurry to improve the strength of the cement slurry.

[0041] Please refer to Figure 9 , multiple liquid guiding grooves 331 are opened on the outer wall of the plugging cone 33. The left end of the liquid guiding groove 331 extends to the left side wall of the plugging cone 33, and a 2-mm reserved section is provided between the right end of the liquid guiding groove 331 and the right side wall of the plugging cone 33.

[0042] Specifically, as long as the cement slurry enhancer pushes the plugging cone 33 out a small distance, the cement slurry enhancer can enter the cement slurry along the liquid guiding grooves 331. At the same time, the plugging cone 33 can extend into the cement slurry, so that the cement slurry enhancer is mixed with the cement slurry more evenly.

[0043] Please refer to Figure 7 , the upper end of the calibration end 7 is adapted to the structure of the guiding groove 41. An annular groove flap 71 is provided on the outer wall of the calibration end 7, and a negative pressure annular groove 43 corresponding to the position of the annular groove flap 71 is provided on the inner wall of the guiding groove 41. The tight combination of the two is achieved by the adaptation of the calibration end 7 and the guiding groove 41 in structure.

[0044] A micro liquid pump is provided inside the grouting plugging assembly 4, and the micro liquid pump is connected to the negative pressure annular groove 43.

[0045] Specifically, the negative pressure annular groove 43 and the annular groove flap 71 are used to form a complete annular cavity, and the liquid therein is completely pumped out by cooperating with the micro liquid pump. The pressure of the external seawater is used to make the calibration end 7 and the grouting plugging assembly 4 more tightly combined.

[0046] Waterproof layers are provided on both the outer wall of the calibration end 7 and the inner wall of the guiding groove 41. The waterproof layers are made of rubber materials. The waterproof layers make the combination of the outer wall of the calibration end 7 and the guiding groove 41 tighter, reduce the infiltration of external seawater, improve the purity of the cement slurry, and thus improve the strength of the cement slurry.

[0047] Please refer to Figure 8 , a guiding groove 41 is provided at the lower end of the grouting plugging assembly 4. The guiding groove 41 has a funnel structure with an opening downward, and a limiting groove 42 corresponding to the position of the inserting leg 11 is provided at the lower end of the guiding groove 41.

[0048] Specifically, the guiding groove 41 can make it easier for the inserting leg 11 to enter the inserting hole 31, improving the convenience of installing the jacket 1. At the same time, the limiting groove 42 can limit the fixing pile 3, improving the stability and safety of the fixing pile 3.

[0049] A gap is left between the inserting leg 11 and the inserting hole 31. When the inserting leg 11 is inside the inserting hole 31, the inserting leg 11 is tightly connected to the shrinkage sleeve 8. The shrinkage sleeve 8 can divide the inserting hole 31 into two parts. After the upper part is filled, the shrinkage sleeve 8 is relaxed and the remaining cement slurry inside the grouting pipe 2 is used to complete the filling of the lower part, reducing the use of cement slurry.

[0050] A vibration module corresponding to the position of the inserting hole 31 is provided inside the fixing pile 3. The vibration module is electrically connected to the grouting device. The vibration module can vibrate the cement slurry to make the cement slurry compacted, reduce the internal cavity, improve the strength of the cement slurry, and improve the integrity and safety of the fixing pile 3 and the inserting leg 11.

[0051] Please refer to Figure 10-13, when installing the jacket 1, insert the insertion leg 11 into the insertion hole 31, use the grouting plugging assembly 4 and the calibration end 7 to form a sealed space, cooperate with the drainage pump to drain the water inside it, and use the pressure of seawater to make the combination of the grouting plugging assembly 4 and the calibration end 7 more stable. At the same time, the dry space is more suitable for the perfusion of cement slurry. Use the shrink sleeve 8 to tightly wrap the outer wall of the insertion leg 11, and pour cement slurry into the insertion hole 31 through the grouting device and the grouting pipe 2. The cement slurry first accumulates above the shrink sleeve 8. When the pressure sensor senses that the cement slurry above the shrink sleeve 8 is full, immediately control the grouting device to stop working, and at the same time control the solenoid valve 81 to release the cement slurry enhancer in the shrink sleeve 8 into the liquid storage cavity 32, so that the shrink sleeve 8 reduces the connection tightness with the insertion leg 11. The residual cement slurry in the grouting pipe 2 falls under the action of gravity into the lower part of the shrink sleeve 8, making the insertion leg 11 and the insertion hole 31 form a whole, reducing the waste of cement slurry and improving the stability of the jacket 1 at the same time.

[0052] As mentioned above, it is only the preferred specific implementation mode of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application, according to the technical solution and its improvement concept of the present application, makes equivalent substitutions or changes, and should be covered by the protection scope of the present application.

Claims

1. A jacket with a grouting plugging device, comprising a jacket (1), wherein a plurality of insertion legs (11) are arranged at the lower end of the jacket (1), a platform (5) is arranged at the upper end of the jacket (1), a fixed pile (3) corresponding to the position of the insertion leg (11) is arranged below the insertion leg (11), and the lower end of the fixed pile (3) is buried under the seabed, characterized in that, The outer wall of the upper end of the insertion leg (11) is provided with a grouting plugging assembly (4). The upper end of the fixed pile (3) is provided with a calibration end (7) corresponding to the position of the grouting plugging assembly (4). The upper end of the fixed pile (3) is provided with an insertion hole (31). The inner wall of the insertion hole (31) is provided with a shrinkage sleeve (8). The diameter of the shrinkage sleeve (8) gradually decreases from top to bottom. The shrinkage sleeve (8) is made of an elastic material. The upper end of the shrinkage sleeve (8) is provided with a plurality of solenoid valves (81). The inside of the shrinkage sleeve (8) is provided with a liquid storage cavity (82). The liquid storage cavity (82) is filled with a cement slurry enhancer. The fixed pile (3) is internally provided with a liquid storage cavity (32) corresponding to the position of the insertion hole (31). The liquid storage cavity (82) is communicated with the liquid storage cavity (32) through the solenoid valve (81). A grouting pipe (2) is connected to the jacket (1) through a fixing device. The upper end of the grouting pipe (2) penetrates through the platform (5) and extends to its upper end. The upper end of the grouting pipe (2) is connected with a grouting device. The lower end of the grouting pipe (2) penetrates through the grouting plugging assembly (4) and extends to its lower end. The lower end of the grouting plugging assembly (4) is provided with a pressure sensor. The pressure sensor is electrically connected to the grouting device. A drainage pump communicating with the inside of the insertion hole (31) is provided inside the fixed pile (3).

2. The jacket with a grouting plugging device according to claim 1, wherein, A plurality of anti-slip grooves are formed on the inner wall of the insertion hole (31). The inner wall of the anti-slip groove is polished to obtain a rough surface.

3. The jacket with a grouting plugging device according to claim 1, characterized in that, A plurality of reinforcing holes communicating with the inside of the liquid storage cavity (32) are formed on the inner wall of the insertion hole (31). The inner diameter of the reinforcing hole gradually decreases from inside to outside. A plugging cone (33) is movably arranged inside the reinforcing hole. The plugging cone (33) is adapted to the size of the reinforcing hole.

4. A jacket with a grouting plugging device according to claim 3, characterized in that A plurality of liquid guiding grooves (331) are formed on the outer wall of the plugging cone (33). The left end of the liquid guiding groove (331) extends to the left side wall of the plugging cone (33). A reserved section of 2-5 mm is provided between the right end of the liquid guiding groove (331) and the right side wall of the plugging cone (33).

5. A jacket with a grouting plugging device according to claim 1, characterized in that, A guiding groove (41) is formed at the lower end of the grouting plugging assembly (4). The guiding groove (41) has a funnel structure with an opening downward. A limiting groove (42) corresponding to the position of the insertion leg (11) is formed at the lower end of the guiding groove (41).

6. A jacket with a grouting plugging device according to claim 5, characterized in that, The upper end of the calibration end (7) is adapted to the structure of the guiding groove (41). An annular groove lobe (71) is formed on the outer wall of the calibration end (7). A negative pressure ring groove (43) corresponding to the position of the annular groove lobe (71) is formed on the inner wall of the guiding groove (41).

7. A jacket with a grouting plugging device according to claim 6, characterized in that, A micro liquid pump is arranged inside the grouting plugging assembly (4). The micro liquid pump is communicated with the negative pressure ring groove (43).

8. A jacket with a grouting plugging device according to claim 5, characterized in that A waterproof layer is provided on both the outer wall of the calibration end (7) and the inner wall of the guiding groove (41). The waterproof layer is made of a rubber material.

9. The jacket with a grouting plugging device according to claim 1, characterized in that, A gap is left between the insertion leg (11) and the insertion hole (31). When the insertion leg (11) is inside the insertion hole (31), the insertion leg (11) is tightly connected to the shrinkage sleeve (8).

10. The jacket with a grouting plugging device according to claim 1, wherein A vibration module corresponding to the position of the insertion hole (31) is arranged inside the fixed pile (3). The vibration module is electrically connected to the grouting device.

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