A cylinder device with sinking drag reduction function and construction method thereof

Abstract

The present invention belongs to the field of marine engineering, and in particular to a cylinder device with a sinking and drag reduction function and a construction method thereof. The cylinder device with a sinking and drag reduction function includes a cylinder; a high-pressure nozzle is located below the cylinder, and a plurality of high-pressure nozzles are arranged along the circumference of the cylinder. A water jet is arranged on the high-pressure nozzle, and the water jet is arranged downward; a water supply channel is used to supply water to the high-pressure nozzle. Compared with auxiliary methods and devices such as vibration, hammering, air lift, and weight pressing, the cylinder device with a sinking and drag reduction function of the present application effectively reduces the disturbance to the underwater soil layer, and through the cooperation of high-pressure water jets and air curtains, the pressure of the soil on the cylinder wall is reduced, which not only reduces the lateral friction resistance, but also reduces the risk of deformation of the cylinder structure. The reduction of end resistance and lateral friction resistance can make the cylinder structure sink quickly under its own weight. By controlling the flow rate and pressure of each partition, the drag reduction effect of the high-pressure water jet and air curtain in each partition can be controlled, and high-precision sinking control can be achieved.

Description

Technical Field

[0001] The invention belongs to the field of marine engineering, in particular to a tube device with a sinking drag reduction function and a construction method thereof. Background Art

[0002] At present, large diameter cylinders (generally with a diameter of about 8m-100m, and mostly with a diameter of about 18m-100m) are widely used in the engineering field. However, these large diameter cylindrical structures face challenges such as sinking depth, efficiency, and structural safety during the installation stage, which need to be solved through auxiliary methods and devices such as vibration, hammering, gas lift, and weight.

[0003] Open sea construction is more severely affected by sea conditions, and requires the rapid installation of large-diameter cylinders to minimize engineering risks. However, there is little relevant experience, especially in terms of how to reduce the end resistance at the bottom of the cylinder when it sinks, how to control the sinking posture of the cylinder with high precision, how to reduce the risk of the structure being squeezed and deformed by the side wall soil, and how to minimize soil disturbance. There is currently no public and effective research plan. Summary of the invention

[0004] The purpose of the present invention is to provide a cylinder device with sinking drag reduction function and a construction method thereof in view of the problem that there is no effective research solution disclosed in the background technology on how to reduce the end resistance at the bottom of the cylinder when it sinks and how to minimize the disturbance of the soil.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A cylinder device with a sinking drag reduction function, comprising:

[0007] Cylinder;

[0008] A plurality of high-pressure nozzles are located below the cylinder, and the plurality of high-pressure nozzles are arranged along the circumference of the cylinder, and the high-pressure nozzles are provided with water jet ports, and the water jet ports are arranged downward;

[0009] At least one water supply channel is used to supply water to the high pressure nozzle.

[0010] The present application describes a cylinder device with a sinking drag reduction function, in which a plurality of high-pressure nozzles are arranged below the cylinder body, and the plurality of high-pressure nozzles are arranged along the circumference of the cylinder body. A water jet is arranged on the high-pressure nozzle, and the water jet is arranged downward. When sinking, the water supply channel supplies water to the high-pressure nozzle, and the water jet sprays a downward high-pressure water jet to cut through the underwater soil layer, so as to effectively reduce the end resistance at the bottom when the cylinder body sinks. Compared with auxiliary methods and devices such as vibration, hammering, air lift, and weight pressing, it only needs to disturb the underwater soil layer below and near the high-pressure nozzle, and does not require large-area underwater soil construction, thereby effectively reducing the disturbance to the underwater soil layer.

[0011] Preferably, a protective steel shell is further provided below the cylinder, and the bottom elevation of the protective steel shell is equal to or lower than the bottom elevation of the high-pressure nozzle.

[0012] A protective steel shell is also provided under the cylinder, which can effectively protect the high-pressure nozzle from the underwater soil pressure in at least one direction. At the same time, the protective steel shell also serves as a soil-breaking structure when sinking, and can cooperate with the downward high-pressure water jet ejected from the water jet outlet to cut through the underwater soil layer, which can more effectively reduce the end resistance at the bottom when the cylinder sinks.

[0013] Preferably, the protective steel shell comprises an outer protective steel shell, the outer protective steel shell is located outside the high-pressure nozzle, and the bottom elevation of the outer protective steel shell is equal to or lower than the bottom elevation of the high-pressure nozzle.

[0014] The protective steel shell includes an outer protective steel shell, which is located on the outside of the high-pressure nozzle and can effectively protect the high-pressure nozzle from the lateral pressure of the underwater soil layer on the outside, effectively extending the service life of the high-pressure nozzle. At the same time, the bottom elevation of the outer protective steel shell is equal to or lower than the bottom elevation of the high-pressure nozzle. When the outer protective steel shell sinks, it also serves as a ground-breaking structure, and can cooperate with the high-pressure water jet sprayed downward from the water jet port to cut through the underwater soil layer, which can more effectively reduce the end resistance at the bottom when the cylinder sinks.

[0015] Preferably, the thickness of the outer protective steel shell along the radial direction of the cylinder is smaller than the wall thickness of the cylinder. The outer protective steel shell is thinner than the wall thickness of the cylinder and is easier to break through the soil layer.

[0016] Preferably, the outer protective steel shell is an annular structure, and the high-pressure nozzle is located on the inner side of the outer protective steel shell.

[0017] Preferably, there are a plurality of outer protective steel shells, and the plurality of outer protective steel shells are arranged at intervals along the circumference of the cylinder.

[0018] Preferably, an outer hole groove is provided through the outer protective steel shell, and the outer hole groove is provided corresponding to at least one of the high-pressure nozzles to facilitate the installation of the high-pressure nozzle.

[0019] Preferably, the outer wall of the outer protective steel shell protrudes from the outer wall of the cylinder. Under ideal conditions, a gap will be formed between the outer wall of the cylinder and the soil layer outside the cylinder, or the soil layer near the outer wall of the cylinder can be made looser, which not only reduces the side friction resistance, but also reduces the risk of deformation of the cylinder wall structure.

[0020] Preferably, the outer protective steel shell is overlapped on the outer wall of the cylinder.

[0021] Preferably, the thickness of the outer protective steel shell is T1, 2cm≤T1≤10cm.

[0022] Preferably, the protective steel shell includes an inner protective steel shell, which is located on the inner side of the high-pressure nozzle. The bottom elevation of the inner protective steel shell is equal to or lower than the bottom elevation of the high-pressure nozzle. The inner protective steel shell can effectively protect the high-pressure nozzle from the lateral pressure of the underwater soil layer inside on the high-pressure nozzle, thereby effectively extending the service life of the high-pressure nozzle. At the same time, the bottom elevation of the inner protective steel shell is equal to or lower than the bottom elevation of the high-pressure nozzle. When the inner protective steel shell sinks, it also serves as a ground-breaking structure, which can cooperate with the high-pressure water jet sprayed downward from the water jet port to cut through the underwater soil layer, and can more effectively reduce the end resistance at the bottom when the cylinder sinks.

[0023] Preferably, the thickness of the inner protective steel shell along the radial direction of the cylinder is smaller than the wall thickness of the cylinder. The inner protective steel shell is thinner than the wall thickness of the cylinder and is easier to break through the soil layer.

[0024] Preferably, the inner protective steel shell is an annular structure, and the high-pressure nozzle is located outside the inner protective steel shell.

[0025] Preferably, there are a plurality of inner protective steel shells, and the plurality of inner protective steel shells are arranged at intervals along the circumference of the cylinder.

[0026] Preferably, an inner hole groove is provided through the inner protective steel shell, and the inner hole groove is provided corresponding to at least one of the high-pressure nozzles to facilitate the installation of the high-pressure nozzle.

[0027] Preferably, the inner wall of the inner protective steel shell protrudes from the inner wall of the cylinder. Under ideal conditions, a gap will be formed between the inner wall of the cylinder and the soil layer inside the cylinder, or the soil layer near the inner wall of the cylinder can be made looser, which not only reduces the side friction resistance, but also reduces the risk of deformation of the cylinder wall structure.

[0028] Preferably, the outer protective steel shell is overlapped on the outer wall of the cylinder.

[0029] Preferably, the thickness of the inner protective steel shell is T2, 2cm≤T2≤10cm.

[0030] Preferably, the protective steel shell also includes an arc-shaped connecting piece connected to the cylinder, the arc-shaped connecting piece is arranged along the circumference of the cylinder, the arc-shaped connecting piece is located at the bottom of the cylinder, the outer protective steel shell and the inner protective steel shell are both connected to the arc-shaped connecting piece, the outer protective steel shell, the inner protective steel shell and the arc-shaped connecting piece form a first groove opening downward, and the high-pressure nozzle is located in the first groove.

[0031] Preferably, the outer protective steel shell, the inner protective steel shell and the arc-shaped connecting piece are integrally formed components.

[0032] Preferably, a first partition structure is arranged in the first groove along the circumference of the cylinder, one side of the first partition structure is connected to the inner protective steel shell, and the other side of the first partition structure is connected to the outer protective steel shell.

[0033] Preferably, the first partition structure, the outer protective steel shell, the inner protective steel shell and the arc-shaped connecting piece form an arc-shaped water pipe section, the water ejection port is located at the lower part of the first partition structure, the water ejection port is connected to the arc-shaped water pipe section, and the arc-shaped water pipe section is connected to at least one water supply channel.

[0034] Preferably, the water ejection port is located at the lower part of the first partition structure, and the high-pressure nozzle is detachably connected to the first partition structure.

[0035] Preferably, a first side hole is provided through the side wall of the inner protective steel shell, and the first side hole is connected with the arc-shaped water pipe section and the water supply channel.

[0036] Preferably, the cartridge device with sinking drag reduction function described in the present invention further includes at least one air supply channel;

[0037] The high-pressure nozzle is also provided with at least one third air port, and the third air port is arranged downward;

[0038] A second partition structure is disposed below the first partition structure, one side of the second partition structure is connected to the inner protective steel shell, and the other side of the second partition structure is connected to the outer protective steel shell;

[0039] The water jet port and the third air port are both located at the lower part of the second partition structure;

[0040] The first partition structure, the outer protective steel shell, the inner protective steel shell and the arc-shaped connecting member form a first inner cavity;

[0041] The first partition structure, the outer protective steel shell, the inner protective steel shell and the second partition structure form a second inner cavity;

[0042] One of the first inner cavity or the second inner cavity is an arc-shaped water pipe segment, and the other is an arc-shaped air pipe segment, wherein the water injection port is connected to the arc-shaped water pipe segment, and the arc-shaped water pipe segment is connected to at least one water supply channel; the third air port is connected to the arc-shaped air pipe segment, and the arc-shaped air pipe segment is connected to at least one air supply channel.

[0043] Preferably, an annular portion is connected between the first partition structure and the second partition structure, and a connecting hole is provided in the middle of the annular portion, and the connecting hole passes through the first partition structure and the second partition structure;

[0044] A water pipe head is arranged on the upper part of the high-pressure nozzle, and the water pipe head is respectively connected with the arc-shaped water pipe section and the water jet port;

[0045] The water pipe head is provided with an air pipe head on the outside, the water pipe head and the air pipe head form a gas channel 1, the gas channel 1 is connected with the third gas port, the air pipe head extends into the connecting hole, and the air pipe head is connected with the annular portion;

[0046] A hole one is provided through the hole wall of the connecting hole, and the hole one is connected to the arc-shaped air pipe section. A hole two is correspondingly provided through the wall of the air pipe head, and the hole two is respectively connected to the gas channel one and the hole one.

[0047] Preferably, a second side hole is provided through the side wall of the inner protective steel shell, and the second side hole is connected with the arc-shaped air pipe section and the air supply channel.

[0048] Preferably, the arc-shaped connecting member is provided with an arc-shaped air supply channel arranged along the circumference of the cylinder, and the arc-shaped air supply channel is connected with at least one air supply channel;

[0049] The top of the arc-shaped connecting piece is provided with a first air outlet and a second air outlet along the length direction of the cylinder, and the first air outlet and the second air outlet are both connected with the arc-shaped air supply channel, wherein along the radial direction of the cylinder, the first air outlet is located on the outside of the cylinder, and the second air outlet is located on the inside of the cylinder.

[0050] Preferably, a third side hole is provided on the side wall of the inner protective steel shell or on the side wall of the arc-shaped connecting member, and the third side hole is respectively connected to the arc-shaped air supply channel and at least one air supply channel.

[0051] Preferably, a plurality of arc-shaped water pipe sections are provided at the lower part of the cylinder, the arc-shaped water pipe sections are arranged along the circumference of the cylinder, the arc-shaped water pipe sections are arranged along the circumference of the cylinder, the arc-shaped water pipe sections are connected to at least one of the water ejection ports, and the arc-shaped water pipe sections are connected to at least one water supply channel.

[0052] Preferably, the high-pressure nozzle is detachably connected to the bottom of the corresponding arc-shaped water pipe section.

[0053] Preferably, there are a plurality of water supply channels, and at least two of the arc-shaped water pipe sections are independently connected to a water supply channel.

[0054] Preferably, all arc-shaped water pipe sections are connected end to end in sequence to form an annular water pipe.

[0055] Preferably, a second partition structure is provided between adjacent arc-shaped water pipe sections, and adjacent arc-shaped water pipe sections can be partitioned from each other by corresponding second partition structures, and the arc-shaped water pipe sections between adjacent second partition structures are connected to at least one water supply channel.

[0056] Preferably, the cartridge device with sinking drag reduction function described in the present invention further includes at least one air supply channel;

[0057] The high-pressure nozzle is also provided with at least one third air port, and the third air port is arranged downward;

[0058] All arc-shaped water pipe sections include a first inner tube and a first outer tube sleeved on the outside of the first inner tube, a first annular cavity is provided between the first inner tube and the first outer tube, one of the first inner tube and the first annular cavity is connected to at least one water ejection port and at least one water supply channel, and the other is connected to at least one third air port and at least one air supply channel.

[0059] Preferably, the cartridge device with sinking drag reduction function described in the present invention further includes at least one air supply channel;

[0060] A plurality of first air outlets are arranged on the outer side of the lower part of the cylinder, and the plurality of first air outlets are arranged along the circumference of the cylinder. The first air outlets are arranged upward, and the air supply channel is connected to at least one of the first air outlets.

[0061] Preferably, a plurality of arc-shaped external air pipe segments are arranged on the outer side of the lower part of the cylinder, the arc-shaped external air pipe segments are arranged along the circumference of the cylinder, the arc-shaped external air pipe segments are arranged along the circumference of the cylinder, the arc-shaped external air pipe segments are connected to the first air outlet, and the arc-shaped external air pipe segments are connected to at least one air supply channel.

[0062] Preferably, there are a plurality of air supply channels, and at least two of the arc-shaped outer air pipe segments are independently connected to an air supply channel.

[0063] Preferably, all arc-shaped outer trachea segments are connected end to end in sequence to form a ring-shaped trachea.

[0064] Preferably, the cartridge device with sinking drag reduction function described in the present invention further includes at least one air supply channel;

[0065] A plurality of second air outlets are arranged on the inner side of the lower part of the cylinder, and the plurality of second air outlets are arranged along the circumference of the cylinder. The second air outlets are arranged upward, and the air supply channel is connected to at least one of the second air outlets.

[0066] Preferably, a plurality of arc-shaped inner air pipe segments are provided on the inner side of the lower part of the cylinder, the arc-shaped inner air pipe segments are arranged along the circumference of the cylinder, and the plurality of arc-shaped inner air pipe segments are arranged along the circumference of the cylinder. The arc-shaped inner air pipe segment is connected with the second air outlet, and the arc-shaped inner air pipe segment is connected with at least one of the air supply channels.

[0067] Preferably, there are a plurality of air supply channels, and at least two of the arc-shaped inner air pipe segments are independently connected to an air supply channel.

[0068] Preferably, all arc-shaped inner trachea segments are connected end to end in sequence to form a ring-shaped trachea.

[0069] Preferably, at least two water ejection ports are provided on the high-pressure nozzle, and the plane formed by the jet water of at least two water ejection ports on the same high-pressure nozzle is tangent to the cylinder wall of the cylinder.

[0070] Preferably, the high-pressure nozzle is spherical in shape to have better impact resistance.

[0071] Preferably, the high-pressure nozzle has a water spray chamber connected to the water ejection port, and the cross-section of the water spray chamber gradually decreases from the spherical center to the water ejection port.

[0072] Preferably, the cartridge device with sinking drag reduction function described in the present invention further includes at least one air supply channel;

[0073] The high-pressure nozzle is also provided with at least one third air port, the third air port is arranged downward, and the third air port can be communicated with at least one air supply channel.

[0074] Preferably, a gas channel 1 is provided in the high-pressure nozzle, and the gas channel 1 is connected to the gas supply channel and the third gas port.

[0075] Preferably, at least one of the third air ports is arranged corresponding to a water ejection port, and the third air port is sleeved on the outside of the corresponding water ejection port.

[0076] Preferably, at least one of the third air ports is arranged corresponding to a water jet port, and the water jet port is sleeved on the outer side of the corresponding third air port.

[0077] Preferably, the arrangement interval between adjacent high-pressure nozzles is less than or equal to 1 / 20 of the curvature radius R1 of the cross section where the high-pressure nozzle is located.

[0078] Preferably, the output water pressure of the water jet is P, 10MPa≤P≤100MPa.

[0079] The present invention also discloses a construction method of a cylinder device with a sinking drag reduction function, comprising the following steps:

[0080] Lift the cylinder to the designed position on the seabed and maintain a certain lifting force;

[0081] The cylinder sinks and the water jet nozzle sprays high-pressure water jets;

[0082] After the cylinder reaches the designed depth, the water jet stops spraying high-pressure water jets.

[0083] Preferably, during the sinking process of the cylinder body, the posture of the cylinder device is adjusted by switching at least one of the water ejection ports.

[0084] Preferably, a plurality of first air outlets are arranged on the outer side of the lower part of the cylinder, and the plurality of first air outlets are arranged along the circumference of the cylinder, and the first air outlets are arranged upward;

[0085] A plurality of second air outlets are arranged on the inner side of the lower part of the cylinder, and the plurality of second air outlets are arranged along the circumference of the cylinder, and the second air outlets are arranged upward;

[0086] The construction method comprises the following steps:

[0087] Lift the cylinder to the designed position on the seabed and maintain a certain lifting force;

[0088] The cylinder sinks, the water jet outlet sprays high-pressure water jets, and the first air outlet and the second air outlet both spray gas to form an air curtain;

[0089] After the cylinder reaches the designed depth, the water jetting port stops spraying high-pressure water jets, and the first air outlet and the second air outlet both stop spraying gas.

[0090] Preferably, during the sinking process of the cylinder body, the posture of the cylinder device is adjusted by switching on and off at least one of the water ejection ports and / or switching on and off at least one of the first air outlets and / or switching on and off at least one of the second air outlets.

[0091] Preferably, after the cylinder body sinks to the designed depth, grouting is performed into the water supply channel.

[0092] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0093] 1. The cylinder device with a sinking drag reduction function described in the present application has a plurality of high-pressure nozzles arranged below the cylinder body, and the plurality of high-pressure nozzles are arranged along the circumference of the cylinder body. A water jet is arranged on the high-pressure nozzle, and the water jet is arranged downward. When sinking, the water supply channel supplies water to the high-pressure nozzle, and the water jet sprays a downward high-pressure water jet to cut through the underwater soil layer, so as to effectively reduce the end resistance at the bottom when the cylinder body sinks. Compared with auxiliary methods and devices such as vibration, hammering, air lift, and weight pressing, it only needs to disturb the underwater soil layer below and near the high-pressure nozzle, and does not require large-area underwater soil construction, thereby effectively reducing the disturbance to the underwater soil layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0094] Figure 1 It is a schematic diagram of the vertical cross-sectional structure of a cylinder device with a sinking drag reduction function according to the present invention.

[0095] Figure 2 The present invention Figure 1 Enlarged schematic diagram of part A in the middle.

[0096] Figure 3 It is a three-dimensional schematic diagram of a full-section high-pressure nozzle structure of the present invention.

[0097] Figure 3-1 It is a bottom view schematic diagram of a full-section high-pressure nozzle structure of the present invention.

[0098] Figure 3-2 The present invention Figure 3-1 Enlarged schematic diagram of part B in the middle.

[0099] Figure 4 It is a schematic diagram of the arrangement of a first gas nozzle and a second gas nozzle in a full cross section of the present invention.

[0100] Figure 5 It is a schematic diagram of the structure of the protective steel shell of the present invention (double ring shape).

[0101] Figure 6 It is a schematic diagram of the opening of the outer hole groove on the protective steel shell of the present invention.

[0102] Figure 7 It is a schematic diagram of the arrangement of the protective steel shell of the present invention in a multi-segment form.

[0103] Figure 8 It is a schematic cross-sectional view of the combination of the full-section high-pressure water jet and the drag-reducing air curtain of the present invention (without section lines).

[0104] Fig. 9 It is a three-dimensional schematic diagram of a protective steel shell structure in which an arc-shaped water pipe section and an arc-shaped air pipe section are integrated according to the present invention.

[0105] Fig.10 It is a schematic cross-sectional view of a protective steel shell structure in which an arc-shaped water pipe section and an arc-shaped air pipe section are integrated according to the present invention (a cross section without a high-pressure nozzle installed and without a section line).

[0106] Fig.11 It is a schematic cross-sectional view of a protective steel shell structure in which an arc-shaped water pipe section and an arc-shaped air pipe section are integrated according to the present invention (the cross section where the high-pressure nozzle is installed, without the section line).

[0107] Fig.12 It is a schematic diagram of the assembly of a protective steel shell and a high-pressure nozzle integrated with an arc-shaped water pipe section and an arc-shaped air pipe section of the present invention.

[0108] Fig.13 It is a three-dimensional schematic diagram of a protective steel shell structure in which an arc-shaped air supply channel, an arc-shaped water pipe section and an arc-shaped air pipe section are integrated according to the present invention.

[0109] Fig.14 It is an assembly schematic diagram of a protective steel shell and a high-pressure nozzle integrated with an arc-shaped air supply channel, an arc-shaped water pipe section and an arc-shaped air pipe section of the present invention.

[0110] Fig.15 It is a schematic diagram of the high-pressure water jet of the present invention.

[0111] Fig.16 It is a schematic diagram of an air curtain of the present invention.

[0112] Fig.17 It is a schematic diagram of the vertical cross section of the structure of the high-pressure nozzle of the present invention (water jet).

[0113] Fig.18 It is a schematic diagram of the vertical cross-section of the structure of the high-pressure nozzle of the present invention (water injection port + third air port).

[0114] Fig.19 It is a schematic diagram of the structural arrangement of the partition structure of the present invention.

[0115] Icons: 1-cylinder; 2-protective steel shell; 3-high-pressure nozzle; 4-annular water pipe; 5-first air nozzle; 6-arc-shaped outer air pipe section; 7-water supply channel; 8-air supply channel; 9-vertical water jet; 10-oblique water jet; 11-first groove; 12-first inner tube; 13-first outer tube; 14-third annular cavity; 15-second air nozzle; 16-outer protective steel shell; 17-inner protective steel shell; 18-outer hole groove; 19-arc-shaped connector; 20-first partition structure; 21-arc-shaped water pipe section; 22-second partition structure; 23-arc-shaped air pipe section; 24-arc-shaped air supply channel ; 25-third inner tube; 26-second inner tube; 27-second outer tube; 28-second annular cavity; 29-arc-shaped inner air pipe section; 30-third outer tube; 31-water jet outlet; 32-soil layer; 33-high-pressure water jet; 34-air curtain; 35-gas channel one; 36-third air outlet; 37-hole one; 38-hole two; 39-first side hole; 40-second side hole; 41-third side hole; 42-connecting hole; 43-annular portion; 44-water pipe head; 45-air pipe head; 46-first air outlet; 47-second air outlet; 48-water spray cavity; 49-second partition structure. DETAILED DESCRIPTION

[0116] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0117] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0118] Example 1

[0119] The cylinder device with a sinking drag reduction function described in this embodiment includes a cylinder body 1, a plurality of high-pressure nozzles 3 and at least one water supply channel 7. The plurality of high-pressure nozzles 3 are located below the cylinder body 1, and the plurality of high-pressure nozzles 3 are arranged circumferentially along the cylinder body 1. The high-pressure nozzles 3 are provided with water ejection ports 31, and the water ejection ports 31 are arranged downward; the water supply channel 7 is used to supply water to the high-pressure nozzles 3.

[0120] During installation, the water supply channel 7 is arranged along the length direction of the cylinder 1, and its upper part extends to the upper part of the cylinder 1 and is connected to an external water supply system. The water supply system supplies high-pressure water into the water supply channel 7, and then reaches the water ejection port 31 and is ejected from the water ejection port 31 to form a high-pressure water jet 33.

[0121] There are generally several water supply channels 7, which can be arranged inside the cylinder wall of the cylinder 1, or inside or outside the cylinder 1. When the water supply channel 7 is arranged inside or outside the cylinder 1, it should be as close to the cylinder wall of the cylinder 1 as possible.

[0122] On the basis of the above, a further preferred method is that a plurality of arc-shaped water pipe sections 21 are arranged at the lower part of the cylinder 1, and the length direction of the arc-shaped water pipe sections 21 is arranged along the circumference of the cylinder 1, and the plurality of arc-shaped water pipe sections 21 are arranged along the circumference of the cylinder 1, and the arc-shaped water pipe sections 21 are connected to at least one water ejection port 31 on the water ejection port 31, and the arc-shaped water pipe sections 21 are connected to at least one water supply channel 7.

[0123] The high-pressure nozzle 3 can be welded to the bottom of the corresponding arc-shaped water pipe section 21, and the water outlet 31 is connected to the arc-shaped water pipe section 21. However, for the convenience of installation, the high-pressure nozzle 3 can be detachably connected to the bottom of the corresponding arc-shaped water pipe section 21, such as by snap-fitting or threading.

[0124] On the basis of the above, a further preferred method is that the water supply channels 7 are multiple, at least two of the arc-shaped water pipe sections 21 are individually connected to the water supply channels 7, generally there are at least three arc-shaped water pipe sections 21, each of the arc-shaped water pipe sections 21 is individually connected to the water supply channel 7, and all the arc-shaped water pipe sections 21 form at least three partitions that do not affect each other, and the water pressure of each partition water jet 31 can be dynamically adjusted according to the sinking rate and posture of the cylinder 1, so as to achieve the purpose of high-precision control of the posture of the cylinder 1 during the sinking process.

[0125] On the basis of the above, in a further preferred manner, all arc-shaped water pipe sections 21 are connected end to end in sequence to form an annular water pipe 4 .

[0126] On the basis of the above, a further preferred mode is that a second partition structure 49 is provided between adjacent arc-shaped water pipe sections 21, and adjacent arc-shaped water pipe sections 21 can be mutually partitioned by corresponding second partition structures 49, and adjacent arc-shaped water pipe sections 21 are connected by second partition structures 49, and the arc-shaped water pipe sections 21 between adjacent second partition structures 49 are connected with at least one water supply channel 7 for separate water supply, and the internal partition can be a partition or a valve, and the second partition structure 49 is used for direction adjustment during sinking, for example, during sinking, through the inclinometer at the top of the cylinder device with a sinking resistance reduction function described in the present application, it is observed that it is tilted in one direction or has a tendency to tilt, and with the second partition structure 49, the flow rate can be reduced on the tilted side, or increased on the back side (opposite side), which plays a role in adjusting the resistance difference of different sections of the cylinder device in the circumferential direction, and then the cylinder device is dynamically corrected. Alternatively, through the prior geological survey, it is observed that the stratum is soft on one side and hard on the other side, so it may be possible to increase the flow rate in advance in the hard place to increase the outlet pressure of the corresponding water jet 31. Compared with the annular water pipe 4 without partitions, the above-mentioned fine work can be achieved during construction.

[0127] When the second partition structure 49 is a valve, the valve is closed when adjacent arc-shaped water pipe sections 21 need not affect each other, and is opened when the annular water pipe 4 needs to supply water, so as to adapt to different working conditions.

[0128] like Fig.19 As shown, four arc-shaped water pipe sections 21 are connected end to end in sequence to form an annular water pipe 4, which are respectively recorded as P1 section, P2 section, P3 section and P4 section, and are indicated by different colors in the figure. A second partition structure 49 is arranged between adjacent arc-shaped water pipe sections 21. When used for the direction adjustment of the sinking process of a cylinder device with a sinking resistance reduction function described in the present application, when the cylinder device is tilted in one direction or has a tendency to tilt, for example, when the cylinder device is tilted in the direction of the P1 section or has a tendency to tilt, the flow rate of the corresponding water jet 31 of the P1 section can be reduced, or the flow rate of the corresponding water jet 31 of the P3 section on the opposite side of the P1 section can be increased, which plays a role in adjusting the resistance difference of different sections of the cylinder device in the circumferential direction, thereby dynamically correcting the cylinder device. Alternatively, through prior geological survey, it is observed that the stratum is soft on one side and hard on the other side, for example, the soil layer below the P4 section is harder, then the flow rate of the corresponding water jet 31 of the P4 section is increased in advance, that is, the outlet pressure of the corresponding water jet 31 is increased, so as to achieve more precise groundbreaking operations.

[0129] When working, the water supply system supplies high-pressure water into the water supply channel 7 and reaches the arc-shaped water pipe section 21 , and then reaches the water ejection port 31 , and is ejected from the water ejection port 31 to form a high-pressure water jet 33 .

[0130] The present application describes a cylinder device with a sinking drag reduction function, in which a plurality of high-pressure nozzles 3 are arranged below the cylinder body 1, and the plurality of high-pressure nozzles 3 are arranged circumferentially along the cylinder body 1. A water jet port 31 is arranged on the high-pressure nozzle 3, and the water jet port 31 is arranged downward. When sinking, the water supply channel 7 supplies water to the high-pressure nozzle 3, and the water jet port 31 sprays a downward high-pressure water jet 33 to cut through the underwater soil layer 32, so as to effectively reduce the end resistance at the bottom of the cylinder body 1 when sinking. Compared with auxiliary methods and devices such as vibration, hammering, air lift, and weight pressing, it only needs to disturb the underwater soil layer 32 below and near the high-pressure nozzle 3, and does not require large-area underwater soil layer 32 construction, thereby effectively reducing the disturbance to the underwater soil layer 32.

[0131] Example 2

[0132] The cylinder device with a sinking drag reduction function described in this embodiment is different from that in Embodiment 1 in that: a protective steel shell 2 is further provided below the cylinder body 1, and the bottom elevation of the protective steel shell 2 is equal to or lower than the bottom elevation of the high-pressure nozzle 3. A protective steel shell 2 is further provided below the cylinder body 1, which can effectively protect the high-pressure nozzle 3 from the pressure of the underwater soil layer 32 in at least one direction. At the same time, the protective steel shell 2 also serves as a soil breaking structure when sinking, and can cooperate with the high-pressure water jet 33 ejected downward from the water jet port 31 to cut through the underwater soil layer 32, which can more effectively reduce the end resistance at the bottom of the cylinder body 1 when sinking.

[0133] Specifically, the protective steel shell 2 includes an outer protective steel shell 16, which is located on the outside of the high-pressure nozzle 3, and the bottom elevation of the outer protective steel shell 16 is equal to or lower than the bottom elevation of the high-pressure nozzle 3. The protective steel shell 2 includes an outer protective steel shell 16, which is located on the outside of the high-pressure nozzle 3, and can effectively protect the high-pressure nozzle 3 from the lateral pressure of the underwater soil layer 32 on the high-pressure nozzle 3 on the outside, thereby effectively extending the service life of the high-pressure nozzle 3. At the same time, the bottom elevation of the outer protective steel shell 16 is equal to or lower than the bottom elevation of the high-pressure nozzle 3. When the outer protective steel shell 16 sinks, it also serves as a ground-breaking structure, and can cooperate with the downward high-pressure water jet 33 ejected from the water jet port 31 to cut through the underwater soil layer 32, thereby more effectively reducing the end resistance at the bottom of the cylinder 1 when it sinks.

[0134] On the basis of the above, in a further preferred manner, the thickness of the outer protective steel shell 16 along the radial direction of the cylinder 1 is smaller than the wall thickness of the cylinder 1 . The outer protective steel shell 16 is thinner than the wall thickness of the cylinder 1 and is easier to break the soil layer 32 .

[0135] The outer protective steel shell 16 is preferably in the following ways:

[0136] Method 1: Figure 5As shown, the outer protective steel shell 16 is an annular structure, and the high-pressure nozzle 3 is located on the inner side of the outer protective steel shell 16 .

[0137] Method 2: Figure 7 As shown, there are a plurality of outer protective steel shells 16 , and the plurality of outer protective steel shells 16 are arranged at intervals along the circumference of the cylinder 1 .

[0138] On the basis of the above, in a further preferred manner, an outer hole groove 18 is provided through the outer protective steel shell 16 , and the outer hole groove 18 is provided corresponding to at least one of the high-pressure nozzles 3 to facilitate the installation of the high-pressure nozzle 3 .

[0139] On the basis of the above, a further preferred method is that the outer wall of the outer protective steel shell 16 protrudes from the outer wall of the cylinder 1. Under ideal conditions, a gap will be formed between the outer wall of the cylinder and the soil layer 32 outside the cylinder 1, or the soil layer 32 near the outer wall of the cylinder 1 can be made looser, which not only reduces the side friction resistance, but also reduces the risk of deformation of the cylinder wall structure of the cylinder 1. Specifically, the outer protective steel shell 16 overlaps the outer wall of the cylinder 1.

[0140] The thickness of the outer protective steel shell 16 is T1, 2cm≤T1≤10cm.

[0141] Similarly, the protective steel shell 2 includes an inner protective steel shell 17, which is located on the inner side of the high-pressure nozzle 3. The bottom elevation of the inner protective steel shell 17 is equal to or lower than the bottom elevation of the high-pressure nozzle 3. The inner protective steel shell 17 can effectively protect the high-pressure nozzle 3 from the lateral pressure of the inner underwater soil layer 32 on the high-pressure nozzle 3, effectively extending the service life of the high-pressure nozzle 3. At the same time, the bottom elevation of the inner protective steel shell 17 is equal to or lower than the bottom elevation of the high-pressure nozzle 3. When the inner protective steel shell 17 sinks, it also serves as a ground-breaking structure, and can cooperate with the downward high-pressure water jet 33 ejected from the water ejection port 31 to cut through the underwater soil layer 32, which can more effectively reduce the end resistance at the bottom of the cylinder 1 when it sinks.

[0142] The thickness of the inner protective steel shell 17 along the radial direction of the cylinder 1 is smaller than the wall thickness of the cylinder 1 . The inner protective steel shell 17 is thinner than the wall thickness of the cylinder 1 and is easier to break through the soil layer 32 .

[0143] The inner protective steel shell 17 preferably has the following modes:

[0144] Method 1: Figure 5 As shown, the inner protective steel shell 17 is an annular structure, and the high-pressure nozzle 3 is located outside the inner protective steel shell 17 .

[0145] Mode 2: There are a plurality of inner protective steel shells 17 , and the plurality of inner protective steel shells 17 are arranged at intervals along the circumference of the cylinder 1 .

[0146] On the basis of the above, in a further preferred manner, an inner hole groove is provided through the inner protective steel shell 17 , and the inner hole groove is provided corresponding to at least one of the high-pressure nozzles 3 to facilitate the installation of the high-pressure nozzle 3 .

[0147] On the basis of the above, a further preferred method is that the inner wall of the inner protective steel shell 17 protrudes from the inner wall of the cylinder 1. Under ideal conditions, a gap will be formed between the inner wall of the cylinder and the soil layer 32 inside the cylinder 1, or the soil layer 32 near the inner wall of the cylinder 1 can be made looser, which not only reduces the side friction resistance, but also reduces the risk of deformation of the cylinder wall structure of the cylinder 1. Specifically, the outer protective steel shell 16 is overlapped on the outer wall of the cylinder 1.

[0148] The thickness of the inner protective steel shell 17 is T2, 2cm≤T2≤10cm.

[0149] In the above solution, generally in actual engineering, the outer protective steel shell 16 and the inner protective steel shell 17 are used together. At this time, the high-pressure nozzle 3 is located between the outer protective steel shell 16 and the inner protective steel shell 17 .

[0150] When all the arc-shaped water pipe sections 21 are provided, the arc-shaped water pipe sections 21 may also be provided between the outer protective steel shell 16 and the inner protective steel shell 17 .

[0151] Example 3

[0152] The cylinder device with a sinking drag reduction function described in this embodiment is different from Embodiment 1 or 2 in that: the cylinder device also includes at least one air supply channel 8, a plurality of first air outlets 46 are arranged on the outer side of the lower part of the cylinder 1, and the plurality of first air outlets 46 are arranged along the circumference of the cylinder 1, and the first air outlets 46 are arranged upward, and the air supply channel 8 is connected to at least one of the first air outlets 46. The upper end of the air supply channel 8 extends to the upper part of the cylinder 1 and is externally connected to an air supply system. The air supply system supplies gas into the air supply channel 8, and then reaches the first air outlet 46 and is ejected from the first air outlet 46 to form an air curtain 34. The gas is preferably air.

[0153] The cylinder device with a sinking drag reduction function described in this embodiment forms an upward air curtain through a plurality of first air outlets 46 to reduce the lateral pressure of the outer soil layer 32 on the cylinder wall of the cylinder 1 when the cylinder 1 sinks, thereby reducing the lateral resistance of the outer soil layer 32 on the cylinder wall of the cylinder 1 when the cylinder 1 sinks.

[0154] A plurality of arc-shaped outer air pipe segments 6 are arranged on the outer side of the lower part of the cylinder 1. The arc-shaped outer air pipe segments 6 are arranged circumferentially along the cylinder 1. The arc-shaped outer air pipe segments 6 are connected to the first air outlet 46, and the arc-shaped outer air pipe segments 6 are connected to at least one air supply channel 8.

[0155] Furthermore, a plurality of second air outlets 47 are provided on the inner side of the lower portion of the cylinder 1, and the plurality of second air outlets 47 are arranged along the circumference of the cylinder 1, the second air outlets 47 are arranged upward, the air supply channel 8 is connected to at least one of the second air outlets 47, the upper end of the air supply channel 8 extends to the upper portion of the cylinder 1, and is externally connected to an air supply system, the air supply system supplies gas into the air supply channel 8, and then reaches the second air outlet 47, and is ejected from the second air outlet 47 to form an air curtain 34, and the gas is preferably air.

[0156] The cylinder device with a sinking drag reduction function described in this embodiment forms an upward air curtain through a plurality of second air outlets 47 to reduce the lateral pressure of the inner soil layer 32 on the wall of the cylinder 1 when the cylinder 1 sinks, thereby reducing the lateral resistance of the inner soil layer 32 on the wall of the cylinder 1 when the cylinder 1 sinks.

[0157] A plurality of arc-shaped inner air pipe segments 29 are arranged on the inner side of the lower part of the cylinder body 1. The arc-shaped inner air pipe segments 29 are arranged circumferentially along the cylinder body 1. The arc-shaped inner air pipe segments 29 are connected to the second air outlet 47. The arc-shaped inner air pipe segments 29 are connected to at least one of the air supply channels 8.

[0158] Furthermore, the first air outlet 46 and the second air outlet 47 are provided at the same time, so that a cylinder device with a sinking drag reduction function described in this embodiment forms an upward air curtain on the inside and outside of the cylinder 1 at the same time through the first air outlet 46 and the second air outlet 47 to reduce the lateral pressure of the inner soil layer 32 and the outer soil layer 32 on the cylinder wall of the cylinder 1 when the cylinder 1 sinks, thereby reducing the lateral resistance of the inner soil layer 32 on the cylinder wall of the cylinder 1 when the cylinder 1 sinks.

[0159] Specifically, there are a plurality of air supply channels 8 , and at least two of the arc-shaped outer air pipe segments 6 are independently connected to an air supply channel 8 .

[0160] Specifically, there are a plurality of air supply channels 8 , and at least two of the arc-shaped inner air pipe sections 29 are independently connected to an air supply channel 8 .

[0161] Specifically, all arc-shaped inner airway segments 29 are connected end to end in sequence to form an annular airway.

[0162] Specifically, all arc-shaped outer air pipe segments 6 are connected end to end in sequence to form an annular air pipe.

[0163] In the above scheme, the air curtain is generally an air curtain.

[0164] When there is an outer protective steel shell 16 and an inner protective steel shell 17, the outer side wall of the outer protective steel shell 16 protrudes from the outer wall of the cylinder 1, and the inner side wall of the inner protective steel shell 17 protrudes from the inner wall of the cylinder 1. Ideally, a gap will be formed between the cylinder wall of the cylinder 1 and the soil layer 32; however, in reality, the soil layer 32 on the side of the cylinder 1 will deform and fill the gap. Therefore, the first air outlet 46 and the second air outlet 47 are added to increase the drag-reducing air curtain 34 on both sides of the cylinder 1 to maintain the gap between the cylinder 1 and the soil layer 32 (such as Fig.16 As shown in the figure, the pressure of the soil layer 32 on the wall of the cylinder 1 is reduced. This not only reduces the friction resistance on the side of the cylinder 1, but also reduces the risk of structural deformation of the cylinder 1. The reduction of end resistance and side friction resistance can make the cylinder 1 structure sink quickly under its own weight.

[0165] On the basis of the above, in a further preferred manner, the wall thickness of the cylinder 1 is d1, 1cm≤d1≤10cm, that is, the wall thickness of the cylinder 1 can be 1cm-10cm, and many existing large-diameter cylinder sinking or caisson solutions currently use water to flush the soil to the middle of the cylinder, and then use a bucket boat to remove the soil from the bottom of the water. This is completely different from the principle of the cylinder device with a sinking and drag reduction function described in this embodiment. The present invention uses the air lifting effect of the air curtain to discharge the soil at the ground-breaking position of the lower part of the cylinder 1 upward. When the cylinder 1 is inserted into the underwater soil part, the core soil in the cylinder is retained. Therefore, compared with tens of thousands of caisson cases, the cylinder device with a sinking and drag reduction function described in the present invention has significant advantages such as no need to dig out the core soil, a simple cylinder wall structure of the cylinder 1, and a thinner cylinder wall of the cylinder 1. That is, the internal and external soil pressures of this scheme are balanced, the wall thickness of the cylinder 1 structure can be optimized, and at the same time, the disturbance to the underwater soil can be effectively reduced. The existing caissons inevitably need to dig out the "core soil" in the cylinder, resulting in the external soil pressure of the caisson having an adverse effect on the caisson structure. In comparison, the cylinder 1 structure of the cylinder device with a sinking and drag reduction function described in the present invention can be designed to be more economical and more environmentally friendly.

[0166] Based on the above, the wall thickness of the cylinder 1 of the present invention can generally be only 1 to 10 cm, and the soil-cutting section considering the installation of the high-pressure water jet 33 and the air curtain 34 is slightly thicker, and the overall width can be 2 to 20 cm. The wall thickness of the existing caisson of the same size is generally about 30 cm, and the foot is about 50 cm to 150 cm. The wall thickness of the cylinder 1 structure can be much smaller than the wall thickness of the existing caisson, which is more economical.

[0167] Furthermore, based on the high-pressure water jet 33 arranged in a directional direction and the air curtain 34 arranged upward, the cylinder device with the function of reducing drag when sinking described in this embodiment can sink and break ground without relying on or relying on very little weight and external force to sink the cylinder 1. This greatly reduces the construction difficulty of sinking and installing the cylinder 1 in a marine environment.

[0168] Example 4

[0169] The cylinder device with a sinking drag reduction function described in this embodiment is different from Embodiment 1, 2 or 3 in that: the protective steel shell 2 also includes an arc-shaped connecting piece 19 connected to the cylinder body 1, and the arc-shaped connecting piece 19 is arranged along the circumference of the cylinder body 1. The arc-shaped connecting piece 19 is located at the bottom of the cylinder body 1, and the outer protective steel shell 16 and the inner protective steel shell 17 are both connected to the arc-shaped connecting piece 19. The outer protective steel shell 16, the inner protective steel shell 17 and the arc-shaped connecting piece 19 form a first groove 11 opening downward, and the high-pressure nozzle 3 is located in the first groove 11.

[0170] The outer protective steel shell 16 and the inner protective steel shell 17 can be welded to the arc-shaped connecting piece 19 respectively, or the outer protective steel shell 16, the inner protective steel shell 17 and the arc-shaped connecting piece 19 are integrally formed components.

[0171] On the basis of the above, in a further preferred manner, a first partition structure 20 is provided in the first groove 11 along the circumference of the cylinder 1, one side of the first partition structure 20 is connected to the inner protective steel shell 17, and the other side of the first partition structure 20 is connected to the outer protective steel shell 16. In this case: there are two preferred ways to set the arc-shaped water pipe section 21:

[0172] Method 1: The arc-shaped water pipe section 21 is arranged in the space surrounded by the first partition structure 20, the outer protective steel shell 16, the inner protective steel shell 17 and the arc-shaped connecting member 19, and the water ejection port 31 is located at the lower part of the first partition structure 20, and the arc-shaped water pipe section 21 is connected to the water ejection port 31.

[0173] Method 2: If Figure 8 As shown, the first partition structure 20, the outer protective steel shell 16, the inner protective steel shell 17 and the arc-shaped connecting piece 19 form an arc-shaped water pipe section 21, and the water ejection port 31 is located at the lower part of the first partition structure 20, and the water ejection port 31 is connected to the arc-shaped water pipe section 21, and the arc-shaped water pipe section 21 is connected to at least one water supply channel 7. In this case, a preferred situation is that the water ejection port 31 is located at the lower part of the first partition structure 20, and the high-pressure nozzle 3 is detachably connected to the first partition structure 20. In this scheme, preferably, a first side hole 39 is penetrated on the side wall of the inner protective steel shell 17, and the first side hole 39 is connected to the arc-shaped water pipe section 21 and the water supply channel 7. The lower part of the arc-shaped water pipe section 21 is sealed and connected to the first side hole 39. The water in the water supply channel 7 reaches the arc-shaped water pipe section 21 after passing through the first side hole 39, and then reaches the water ejection port 31 from the arc-shaped water pipe section 21 and is sprayed out.

[0174] The following is an integrated solution. The cartridge device with the function of sinking and reducing drag described in the present invention also includes at least one air supply channel 8, generally several;

[0175] The high pressure nozzle 3 is also provided with at least one third air port 36, and the third air port 36 is arranged downward;

[0176] A second partition structure 22 is disposed below the first partition structure 20, one side of the second partition structure 22 is connected to the inner protective steel shell 17, and the other side of the second partition structure 22 is connected to the outer protective steel shell 16;

[0177] The water jet port 31 and the third air port 36 are both located at the lower part of the second partition structure 22;

[0178] The first partition structure 20, the outer protective steel shell 16, the inner protective steel shell 17 and the arc-shaped connecting member 19 form a first inner cavity;

[0179] The first partition structure 20, the outer protective steel shell 16, the inner protective steel shell 17 and the second partition structure 22 form a second inner cavity;

[0180] One of the first inner cavity or the second inner cavity is an arc-shaped water pipe segment 21, and the other is an arc-shaped air pipe segment 23, wherein the water ejection port 31 is connected to the arc-shaped water pipe segment 21, and the arc-shaped water pipe segment 21 is connected to at least one water supply channel 7; the third air port 36 is connected to the arc-shaped air pipe segment 23, and the arc-shaped air pipe segment 23 is connected to at least one air supply channel 8.

[0181] Take the first inner cavity as the arc-shaped water pipe section 21 and the second inner cavity as the arc-shaped air pipe section 23 as an example: Figure 9-12 As shown, the first partition structure 20, the outer protective steel shell 16, the inner protective steel shell 17 and the arc-shaped connecting piece 19 form an arc-shaped water pipe section 21, and the first partition structure 20, the outer protective steel shell 16, the inner protective steel shell 17 and the second partition structure 22 form an arc-shaped air pipe section 23.

[0182] On the basis of the above, in a further preferred embodiment, an annular portion 43 is connected between the first partition structure 20 and the second partition structure 22, and a connecting hole 42 is provided in the middle of the annular portion 43, and the connecting hole 42 passes through the first partition structure 20 and the second partition structure 22;

[0183] A water pipe head 44 is disposed on the upper portion of the high-pressure nozzle 3, and the water pipe head 44 is respectively connected to the arc-shaped water pipe section 21 and the water jet port 31;

[0184] The water pipe head 44 is provided with an air pipe head 45 on the outside, and the water pipe head 44 and the air pipe head 45 form a gas channel 1 35, and the gas channel 1 35 is connected with the third gas port 36, and the air pipe head 45 extends into the connecting hole 42, and the air pipe head 45 is connected with the annular portion 43, preferably with a threaded connection, and a rubber or other material sealing cushion layer is padded between the air pipe head 45 and the annular portion 43;

[0185] A hole 37 is provided through the wall of the connecting hole 42, and the hole 37 is connected to the arc-shaped air pipe section 23. A hole 2 38 is correspondingly provided through the wall of the air pipe head 45, and the hole 2 38 is respectively connected to the gas channel 1 35 and the hole 1 37.

[0186] A second side hole 40 is formed through the side wall of the inner protective steel shell 17 , and the second side hole 40 is connected with the arc-shaped air pipe section 23 and the air supply channel 8 .

[0187] Take the example of the first inner cavity being the arc-shaped water pipe section 21 and the second inner cavity being the arc-shaped air pipe section 23: during operation, water from at least one water supply channel 7 enters the first side hole 39 and reaches the arc-shaped water pipe section 21, then enters the water pipe head 44 from the arc-shaped water pipe section 21, reaches the water ejection port 31 through the water pipe head 44 and is ejected; gas from at least one air supply channel 8 enters the arc-shaped air pipe section 23 through the second side hole 40, then enters the gas channel one 35 from the arc-shaped air pipe section 23 through hole one 37 and hole two 38 in turn, reaches the corresponding third air port 36 through gas channel one 35 and is ejected.

[0188] Based on the above, the following is a more integrated solution: Fig.13 and 14 As shown, on the basis of the above-mentioned integrated solution, an arc-shaped air supply channel 24 arranged along the circumference of the cylinder 1 is provided in the arc-shaped connecting member 19, and the arc-shaped air supply channel 24 is connected with at least one air supply channel 8; a first air outlet 46 and a second air outlet 47 are provided at the top of the arc-shaped connecting member 19 along the length direction of the cylinder 1, and the first air outlet 46 and the second air outlet 47 are both connected with the arc-shaped air supply channel 24, wherein, along the radial direction of the cylinder 1, the first air outlet 46 is located on the outside of the cylinder 1, and the second air outlet 47 is located on the inside of the cylinder 1.

[0189] During installation, a plurality of first air nozzles 5 and a plurality of second air nozzles 15 may also be arranged on the arc-shaped connecting member 19, and the plurality of first air nozzles 5 are arranged along the circumference of the cylinder body 1, and the first air outlet 46 shown is arranged on the first air nozzle 5; a plurality of second air nozzles 15 are arranged along the circumference of the cylinder body 1, and the second air outlet 47 is arranged on the second air nozzle 15, and the first air outlet 46 and the second air outlet 47 are both arranged upward.

[0190] A third side hole 41 is provided on the side wall of the inner protective steel shell 17 or the side wall of the arc-shaped connecting member 19, and the third side hole 41 is respectively connected to the arc-shaped air supply channel 24 and at least one air supply channel 8. During operation, the gas of at least one air supply channel 8 enters the arc-shaped air supply channel 24 through the third side hole 41, and then enters the first air outlet 46 and the second air outlet 47 from the arc-shaped air supply channel 24, and is ejected through the first air outlet 46 and the second air outlet 47.

[0191] Example 5

[0192] The cylinder device with the function of sinking and reducing drag described in this embodiment is different from that in Embodiment 1, 2, 3 or 4 in that it further comprises at least one air supply channel 8, and at least one third air port 36 is provided on the high-pressure nozzle 3, and the third air port 36 is arranged downward;

[0193] On the basis of the above, in a further preferred manner, all arc-shaped water pipe sections 21 include a first inner tube 12 and a first outer tube 13 sleeved on the outside of the first inner tube 12, a first annular cavity 44 is provided between the first inner tube 12 and the first outer tube 13, one of the first inner tube 12 and the first annular cavity 44 is connected to at least one water ejection port 31 and at least one water supply channel 7, and the other is connected to at least one third air port 36 and at least one air supply channel 8.

[0194] Example 6

[0195] The cylinder device with a sinking and drag reduction function described in this embodiment is different from Embodiment 1 or 2 or 3 or 4 or 5 in that at least two water ejection ports 31 are provided on the high-pressure nozzle 3, and the plane formed by the jet water of at least two water ejection ports 31 on the same high-pressure nozzle 3 is tangent to the cylinder wall of the cylinder body 1.

[0196] On the basis of the above, in a further preferred manner, the high-pressure nozzle 3 is spherical in shape to have better impact resistance.

[0197] Considering the overall prefabrication and installation process of the cylinder 1, there may be 30 to 120 high-pressure nozzles 3 under one cylinder 1. Therefore, the reliability of each high-pressure nozzle 3 and the ability to ensure smooth water flow from the water injection port 31 even if it is subjected to a small impact during construction and transportation must be important. Therefore, a spherical structure is more reasonable than a tubular structure.

[0198] Specifically, Fig.18 As shown, the high-pressure nozzle 3 has a water spray chamber 48 connected to the water ejection port 31 , and the cross-section of the water spray chamber 48 gradually decreases from the spherical center to the water ejection port 31 , which is more conducive to ejecting the high-pressure water jet 33 .

[0199] On the basis of the above, a further preferred method is that the cylinder device with a sinking drag reduction function described in this embodiment also includes at least one air supply channel 8, and at least one third air port 36 is also provided on the high-pressure nozzle 3, and the third air port 36 is arranged downward, and the third air port 36 can be connected to at least one air supply channel 8.

[0200] On the basis of the above, in a further preferred manner, a gas channel 35 is provided in the high-pressure nozzle 3 , and the gas channel 35 is connected to the gas supply channel 8 and the third gas port 36 .

[0201] On the basis of the above, in a further preferred manner, at least one of the third air ports 36 is provided corresponding to a water ejection port 31 , and the third air port 36 is sleeved on the outer side of the corresponding water ejection port 31 .

[0202] More preferably, each of the third air ports 36 corresponds to a water ejection port 31 , and the third air ports 36 are sleeved on the outer side of the corresponding water ejection port 31 .

[0203] On the basis of the above, in a further preferred manner, the arrangement spacing between adjacent high-pressure nozzles 3 is less than or equal to 1 / 20 of the curvature radius R1 of the cross section where the high-pressure nozzle 3 is located.

[0204] On the basis of the above, in a further preferred embodiment, the output water pressure of the water jetting port 31 is P, 10MPa≤P≤100MPa.

[0205] Example 7

[0206] As shown in 1-18: The cylinder device with a sinking and drag reduction function described in this embodiment is different from Embodiment 1 or 2 or 3 or 4 or 5 or 6 in that: This embodiment proposes a preferred combination scheme for the cylinder device based on a full-section high-pressure water jet 33 and a drag reduction air curtain 34 in actual construction, with the aim of solving the problems of the large-diameter cylinder 1 under the existing technology: sinking speed, sinking depth, structural deformation, high-precision control of sinking posture, etc.

[0207] This embodiment mainly includes: a cylinder 1, a protective steel shell 2, a high-pressure nozzle 3, an annular water pipe 4, an air hole 5, an annular air pipe 6, a water supply channel 7, an air supply channel 8 and other components.

[0208] The protective steel shell 2 includes an inner protective steel shell 17 and an outer protective steel shell 16, which are fixed to both sides of the bottom end of the cylinder 1 by welding, and serve as a ground-breaking structure when sinking; the annular water pipe 4 is installed in the protective steel shell 2, and screw holes are opened at equal intervals; the high-pressure nozzle 3 is spherical, and the high-pressure water pressure of each high-pressure nozzle 3 is designed to reach 30Mpa, the aperture is 4mm-20mm, and the maximum flow rate is up to 1000L / min; the high-pressure nozzle 3 is provided with 3 water jets 31, including 1 vertical water jet 9 and 2 oblique water jets 10, which are quickly connected with the screw holes of the annular air pipe 6 through threads, and a rubber or other material water-stopping cushion is padded in the middle; the jet horizontal planes of the three water jets 31 of the high-pressure nozzle 3 are tangent to the wall of the cylinder 1; the annular water pipe 4 is divided into at least three mutually independent partitions by internal partitions, Each partition is an arc-shaped water pipe section 21, and the inner openings of the arc-shaped water pipe section 21 are connected to the respective water supply channels 7; the water pressure and flow of the water supply channel 7 are adjusted by the external water supply system, and the water pressure and flow of each partition can be adjusted individually; annular air pipes are arranged on both sides of the top of the protective steel shell 2, and air holes 5 are also opened at equal intervals. The design air pressure of each air hole 5 can reach 5Mpa, and the maximum flow rate can reach 200L / min; each annular air pipe is divided into at least three partitions that do not affect each other. Each partition located on the outside of the cylinder 1 is an arc-shaped outer air pipe section 6, and each partition located on the inside of the cylinder 1 is an arc-shaped inner air pipe section 29. The arc-shaped outer air pipe section 6 and the arc-shaped inner air pipe section 29 are both connected to the corresponding air supply channel 8 through the top openings. The air supply channel 8 is externally connected to the air supply system, and the air supply system can individually adjust the air pressure and flow of each arc-shaped outer air pipe section 6 and the arc-shaped inner air pipe section 29. On the basis of the above scheme, the water supply channel 7 and the air supply channel 8 can be designed as an integrated system, and the water pressure or air pressure of each partition can be dynamically adjusted according to the sinking rate and posture of the cylinder 1 to achieve high-precision control of the sinking process.

[0209] The design inner diameter of the water supply channel 7 and the air supply channel 8 are both 2cm-10cm. The arrangement spacing of the high-pressure nozzles 3 should not be less than 1 / 20 of the curvature radius R1 of the section where the high-pressure nozzles 3 are located, so as to fit the section and achieve the effect of full-section water jet breaking the soil. The height of the protective steel shell 2 is determined according to the height of the annular water pipe 4, the high-pressure nozzle 3, and the length of the welding part; the thickness of the inner protective steel shell 17 and the outer protective steel shell 16 is 2cm-10cm respectively.

[0210] The following schemes are preferred for protecting the steel shell 2.

[0211] Option 1: If Figure 5 As shown, the protective steel shell 2 is arranged in a ring;

[0212] Option 2: If Figure 6 As shown, part of the steel shell is cut off at the position of the high-pressure nozzle 3 to facilitate the installation of the nozzle.

[0213] Option 3: If Figure 7As shown, the protective steel shell 2 is arranged in sections.

[0214] Option 4: If Figure 8 As shown, the protective steel shell 2 adopts a U-shaped design and forms a closed space by welding, which serves as the annular water pipe 4.

[0215] If it is necessary to use a high-pressure nozzle 3 in the form of air-water, the high-pressure nozzle 3 scheme is as follows Fig.18 As shown, accordingly, the annular water pipe 4 can be changed into a double-layer pipe to provide gas and water at the same time.

[0216] In the above scheme, an arc-shaped air pipe section 23 is added as an air supply layer to supply air to the high-pressure nozzle 3. Specifically, two layers of steel plates are welded in the U-shaped protective steel shell 2, that is, the upper steel plate is used as the first partition structure 20, and the lower steel plate is used as the second partition structure 22 to form an arc-shaped air pipe section 23 as an air supply layer (see Fig.11 ); open a screw hole at the location where the high-pressure nozzle 3 is installed (see Fig.12 ), the screw hole penetrates the first partition structure 20 and the second partition structure 22, and is used to connect the high-pressure nozzle 3 with the arc-shaped air supply channel 24. At the same time, holes 37 are provided on both sides of the screw hole and connected to the arc-shaped air pipe section 23. Correspondingly, a second hole 38 connected to the gas channel 1 35 is provided on the thread of the high-pressure nozzle 3 and is connected to the hole 1 37.

[0217] Fig.13 and 14 It is a highly integrated design solution, and the protective steel shell 2 also serves as a high-pressure water jet device and an air curtain device.

[0218] Working principle:

[0219] The protective steel shell 2 is thinner than the cylinder 1, making it easier to break the soil layer 32. The high-pressure nozzle 3 has three jet holes in different directions: two are tilted downward and one is vertically downward. During the sinking process, high-speed water flow is continuously ejected to cut through the hard soil layer 32. The jet direction of the high-pressure nozzle 3 is tangent to the circumference of the cylinder 1, and is arranged at equal intervals in the entire section to fit the circumference, so as to achieve the soil cutting effect of the entire section and reduce the end resistance (such as Fig.15 As shown in the figure). The cutting end protection steel shell 2 is designed to be thicker than the wall thickness of the cylinder 1. Ideally, a gap will be formed between the cylinder wall 1 and the soil layer 32; however, in reality, the soil will deform and fill the gap. Therefore, drag-reducing air curtains 34 are added on both sides to maintain the gap between the cylinder 1 and the soil layer 32 (as shown in the figure). Fig.16 As shown in the figure, the pressure of the soil layer 32 on the wall of the cylinder 1 is reduced. This not only reduces the side friction resistance, but also reduces the risk of structural deformation. The reduction of end resistance and side friction resistance can make the structure sink quickly under its own weight.

[0220] By controlling the flow and pressure delivered to each partition by the water supply and air supply systems, the drag reduction effect of the high-pressure water jet 33 and the air curtain 34 of each partition can be controlled, thereby achieving high-precision sinking control.

[0221] The water supply system includes a water pump, which supplies water to the water supply channel 7. Several water supply channels 7 can be connected to one water pump, or each water supply channel 7 can be connected to one water pump.

[0222] The air supply system includes an air pump, which supplies air to the air supply channel 8. Several air supply channels 8 can be connected to one air pump, or each air supply channel 8 can be connected to one air pump.

[0223] The cylinder device with the function of sinking and reducing drag described in this embodiment has the following effects:

[0224] 1 The protective steel shell 2 installed in a circular manner at the bottom elevation of the structure can effectively protect the high-pressure nozzle 3 and the circular water pipe 4 of the high-pressure water jet, facilitate transportation and construction, and at the same time, the relatively thinner wall thickness can also better break the ground;

[0225] 2 The design and arrangement of the high-pressure nozzle 3 can well cut the soil in an annular direction, and the full-section drag-reducing air curtain 34 can effectively reduce the sinking resistance and realize the rapid sinking of the structure;

[0226] 3 The full-section drag-reducing air curtain 34 also reduces the squeezing of the surrounding soil on the cylinder 1 structure, reducing the risk of deformation and damage during the sinking of the cylinder 1 structure, which is particularly important for the sinking of a relatively soft large-diameter steel cylinder structure;

[0227] 4 The soil in the earth-breaking section can be discharged upward through the air curtain 34;

[0228] 5. By adjusting the water supply system and the air supply system, the downward resistance of the structure in all directions can be controlled, and a combination of multiple methods can achieve high-precision control of the structure's sinking posture.

[0229] Example 8

[0230] As shown in 18: The cylinder device with a sinking drag reduction function described in this embodiment is different from that in Embodiment 1 or 2 or 3 or 4 or 5 or 6 or 7 in that: This embodiment proposes a preferred high-pressure nozzle 3, and at least one third air port 36 is also provided on the high-pressure nozzle 3, and the third air port 36 is arranged downward.

[0231] Specifically, at least one of the third air ports 36 is sleeved on the outer side of the corresponding water ejection port 31 .

[0232] In the above case, a water pipe head 44 is provided on the upper part of the high-pressure nozzle 3, and the water pipe head 44 is respectively connected to the arc-shaped water pipe section 21 and the water jet port 31;

[0233] The water pipe head 44 is provided with an air pipe head 45 on the outside, and the water pipe head 44 and the air pipe head 45 form a gas channel 1 35, and the gas channel 1 35 is connected with the third gas port 36, and the air pipe head 45 extends into the connecting hole 42, and the air pipe head 45 is connected with the annular portion 43;

[0234] A hole 37 is provided through the wall of the connecting hole 42, and the hole 37 is connected to the arc-shaped air pipe section 23. A hole 2 38 is correspondingly provided through the wall of the air pipe head 45, and the hole 2 38 is respectively connected to the gas channel 1 35 and the hole 1 37.

[0235] Of course, the water pipe head 44 can be sleeved on the outside of the air pipe head 45, and the water injection port 31 can be sleeved on the outside of the third air port 36 to form a water-enclosed air spraying form.

[0236] Example 9

[0237] This embodiment discloses a construction method for a cylinder device with a sinking drag reduction function as described in Embodiment 1, 2, 3, 4, 5, 6, 7, or 8, comprising the following steps:

[0238] The cylinder 1 is hoisted at the designed position on the seabed surface and a certain hoisting force is maintained;

[0239] The cylinder 1 sinks, and the water jet port 31 sprays a high-pressure water jet 33;

[0240] After the cylinder 1 reaches the designed depth, the water jet port 31 stops spraying the high-pressure water jet 33 .

[0241] Preferably, during the sinking process of the cylinder body 1, the posture of the cylinder device is adjusted by switching at least one of the water ejection ports 31.

[0242] Preferably, a plurality of first air outlets 46 are arranged on the outer side of the lower part of the cylinder 1, and the plurality of first air outlets 46 are arranged along the circumference of the cylinder 1, and the first air outlets 46 are arranged upward;

[0243] A plurality of second air outlets 47 are disposed on the inner side of the lower portion of the cylinder 1, and the plurality of second air outlets 47 are disposed along the circumference of the cylinder 1, and the second air outlets 47 are disposed upward;

[0244] The construction method comprises the following steps:

[0245] The cylinder 1 is hoisted at the designed position on the seabed surface and a certain hoisting force is maintained;

[0246] The cylinder 1 sinks, the water jet port 31 sprays a high-pressure water jet 33, and the first air outlet 46 and the second air outlet 47 both spray gas to form an air curtain;

[0247] After the cylinder 1 reaches the designed depth, the water jet port 31 stops jetting the high-pressure water jet 33 , and both the first gas outlet 46 and the second gas outlet 47 stop jetting gas.

[0248] Preferably, during the sinking process of the cylinder body 1, the posture of the cylinder device is adjusted by switching on and off at least one of the water ejection ports 31 and / or switching on and off at least one of the first air outlets 46 and / or switching on and off at least one of the second air outlets 47.

[0249] In actual engineering operations, an auxiliary sinking process:

[0250] 1) The cylinder 1 is hoisted to the designed position on the seabed surface by a floating crane while maintaining a certain hoisting force.

[0251] 2) Under partial deadweight, the bottom of the cylinder 1 gradually breaks through the ground and sinks, and the sinking speed is controlled by controlling the lifting force.

[0252] 3) As the sinking depth increases, the end resistance and side wall friction of the cylinder breaking the ground increase, and the sinking speed will gradually slow down. At this time, the structure's own weight is not enough to break the ground, and other auxiliary measures are needed.

[0253] 4) According to the sinking rate and deformation control conditions at the site, the water supply system is started to supply water to the water supply channel 7 and the air supply system is started to supply air to the air supply channel 8. The circumferentially arranged high-pressure nozzles 3 start to work, and the high-speed jet water cuts the soil at the end of the cylinder 1 to reduce the end resistance; the circumferentially arranged first air outlet 46 and second air outlet 47 spray air to form an air curtain 34 between the cylinder wall of the cylinder 1 and the soil layer 32 to reduce the friction resistance of the side wall of the cylinder 1.

[0254] 5) With the assistance of the full-section high-speed jet and the drag-reducing air curtain 34, the sinking rate is quickly restored

[0255] 6) The jet velocity of the high-pressure nozzle 3 or the air hole 5 between the partitions and the crane lifting point are adjusted through the water supply system and the air supply system to control the sinking rate of the structure in all directions with high precision.

[0256] 7) After sinking to the designed depth, stop the high-pressure water jet 33 and the air curtain 34.

[0257] The gap between the cylinder wall and the soil layer 32 is filled by grouting to quickly stabilize the cylinder body 1.

[0258] In actual engineering operation, another auxiliary sinking process, air curtain 34 is an air curtain:

[0259] 1. The cylinder 1 is hoisted on the sea surface by a floating crane and gradually sunk to the bottom of the cylinder 1 close to the seabed. To avoid blockage of the water jet 31, the first air outlet 46 or the second air outlet 47, the high-pressure water jet 33 and the air curtain 34 are opened in advance to maintain a low-flow operation state;

[0260] 2. The bottom of the cylinder 1 structure gradually breaks through the ground and sinks. In order to control the sinking posture (tilt, rotation, translation) of the cylinder 1, a certain lifting force is maintained. The lifting force is provided by 1 / 4 to 2 / 3 of the weight of the cylinder 1;

[0261] 3. As the sinking depth increases, the end resistance and side wall friction of the cylinder 1 breaking the ground tend to increase, and the sinking speed will gradually slow down. The reason is that the deadweight of the cylinder 1 structure is not enough to break the ground. It is necessary to adjust the airflow of the air curtain 34 and / or the flow rate of the high-pressure water jet 33, and with the assistance of the full-section high-pressure water jet 33 and the drag-reducing air curtain 34, the sinking rate of the cylinder 1 is quickly restored;

[0262] 4. According to the sinking rate and deformation control conditions on site, start the external water supply system and air supply system. The circumferentially arranged high-pressure nozzles 3 start to work, and the high-pressure water jet 33 cuts the end soil to reduce the end resistance; the circumferentially arranged first air outlet 46 or second air outlet 47 sprays air to form an air curtain 34 between the cylinder wall 1 and the soil to reduce the side wall friction;

[0263] 5. The jet velocity of the high-pressure nozzle 3 or the first air outlet 46 or the second air outlet 47 between different partitions and the crane lifting point are adjusted through the external water supply system and the air supply system to control the sinking rate of all parties of the cylinder 1 structure with high precision;

[0264] 6. After sinking to the designed depth, the high-pressure water jet 33 and the air curtain 34 are stopped, and then the soil friction and pressure around the cylinder 1 structure and at the end are restored to a large extent.

[0265] 7. After confirming that the cylinder 1 structure has reached the design target elevation, switch the water pump to a grouting pump to inject grout into the water supply channel 7 to further stabilize the cylinder 1 structure.

[0266] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cylinder device with a sinking drag reduction function, characterized in that: include: Cylinder (1); A plurality of high-pressure nozzles (3) are located below the cylinder (1), and the plurality of high-pressure nozzles (3) are arranged along the circumference of the cylinder (1), and a water jetting port (31) is arranged on the high-pressure nozzle (3), and the water jetting port (31) is arranged to face downward; at least one water supply channel (7) for supplying water to the high-pressure nozzle (3); A protective steel shell (2) is also provided below the cylinder (1), the protective steel shell (2) comprising an outer protective steel shell (16), the outer protective steel shell (16) being located outside the high-pressure nozzle (3), the protective steel shell (2) further comprising an inner protective steel shell (17), the inner protective steel shell (17) being located inside the high-pressure nozzle (3); The protective steel shell (2) further comprises an arc-shaped connecting piece (19) connected to the cylinder (1), the arc-shaped connecting piece (19) being arranged along the circumference of the cylinder (1), the arc-shaped connecting piece (19) being located at the bottom of the cylinder (1), the outer protective steel shell (16) and the inner protective steel shell (17) being connected to the arc-shaped connecting piece (19), the outer protective steel shell (16), the inner protective steel shell (17) and the arc-shaped connecting piece (19) forming a first groove (11) opening downward, and the high-pressure nozzle (3) being located in the first groove (11); A first partition structure (20) is arranged in the first groove (11) along the circumference of the cylinder (1), one side of the first partition structure (20) is connected to the inner protective steel shell (17), and the other side of the first partition structure (20) is connected to the outer protective steel shell (16); The first partition structure (20), the outer protective steel shell (16), the inner protective steel shell (17) and the arc-shaped connecting piece (19) form an arc-shaped water pipe section (21); the water ejection port (31) is located at the lower part of the first partition structure (20); the water ejection port (31) is connected to the arc-shaped water pipe section (21); and the arc-shaped water pipe section (21) is connected to at least one water supply channel (7); It also comprises at least one air supply channel (8); a plurality of first air outlets (46) are arranged on the outer side of the lower part of the cylinder (1), and the plurality of first air outlets (46) are arranged along the circumference of the cylinder (1), the first air outlets (46) are arranged upward, and the air supply channel (8) is connected to at least one of the first air outlets (46).

2. A cylinder device with a sinking drag reduction function according to claim 1, characterized in that: The elevation of the bottom of the protective steel shell (2) is equal to or lower than the elevation of the bottom of the high-pressure nozzle (3).

3. A cylinder device with a sinking drag reduction function according to claim 2, characterized in that: The bottom elevation of the outer protective steel shell (16) is equal to or lower than the bottom elevation of the high-pressure nozzle (3).

4. The cylinder device with the function of sinking and reducing drag according to claim 3, characterized in that: The thickness of the outer protective steel shell (16) along the radial direction of the cylinder (1) is smaller than the wall thickness of the cylinder (1).

5. The cylinder device with the function of sinking and reducing drag according to claim 3, characterized in that: The outer protective steel shell (16) is an annular structure, and the high-pressure nozzle (3) is located on the inner side of the outer protective steel shell (16).

6. The cylinder device with the function of sinking and reducing drag according to claim 3, characterized in that: There are a plurality of outer protective steel shells (16), and the plurality of outer protective steel shells (16) are arranged at intervals along the circumference of the cylinder (1).

7. The cylinder device with the function of sinking and reducing drag according to claim 3, characterized in that: An external hole groove (18) is provided through the outer protective steel shell (16), and the external hole groove (18) is provided corresponding to at least one of the high-pressure nozzles (3).

8. The cylinder device with the function of sinking and reducing drag according to claim 3, characterized in that: The outer side wall of the outer protective steel shell (16) protrudes from the outer wall of the cylinder (1).

9. A cylinder device with a sinking drag reduction function according to claim 8, wherein the outer protective steel shell (16) is overlapped on the outer wall of the cylinder body (1).

10. The cylinder device with the function of sinking and reducing drag according to claim 3, characterized in that: The thickness of the outer protective steel shell (16) is T1, 2cm≤T1≤10cm.

11. The cylinder device with the function of sinking and reducing drag according to claim 3, characterized in that: The elevation of the bottom of the inner protective steel shell (17) is equal to or lower than the elevation of the bottom of the high-pressure nozzle (3).

12. The cylinder device with the function of sinking and reducing drag according to claim 11, characterized in that: The thickness of the inner protective steel shell (17) along the radial direction of the cylinder (1) is smaller than the wall thickness of the cylinder (1).

13. The cylinder device with the function of sinking and reducing drag according to claim 11, characterized in that: The inner protective steel shell (17) is an annular structure, and the high-pressure nozzle (3) is located outside the inner protective steel shell (17).

14. The cylinder device with the function of sinking and reducing drag according to claim 11, characterized in that: There are a plurality of inner protective steel shells (17), and the plurality of inner protective steel shells (17) are arranged at intervals along the circumference of the cylinder (1).

15. The cylinder device with the function of sinking and reducing drag according to claim 11, characterized in that: The inner protective steel shell (17) is provided with an inner hole groove penetrating therethrough, and the inner hole groove is provided corresponding to at least one of the high-pressure nozzles (3).

16. The cylinder device with the function of sinking and reducing drag according to claim 11, characterized in that: The inner side wall of the inner protective steel shell (17) protrudes from the inner wall of the cylinder (1).

17. A cylinder device with a sinking drag reduction function according to claim 16, wherein the outer protective steel shell (16) is overlapped on the outer wall of the cylinder body (1).

18. The cylinder device with the function of sinking and reducing drag according to claim 11, characterized in that: The thickness of the inner protective steel shell (17) is T2, 2cm≤T2≤10cm.

19. The cylinder device with the function of sinking and reducing drag according to claim 1, characterized in that: The outer protective steel shell (16), the inner protective steel shell (17) and the arc-shaped connecting piece (19) are integrally formed components.

20. The cylinder device with the function of sinking and reducing drag according to claim 1, characterized in that: The high-pressure nozzle (3) is detachably connected to the first partition structure (20).

21. The cylinder device with the function of sinking and reducing drag according to claim 1, characterized in that: A first side hole (39) is provided through the side wall of the inner protective steel shell (17), and the first side hole (39) is connected with the arc-shaped water pipe section (21) and the water supply channel (7).

22. A cylinder device with a sinking drag reduction function according to claim 1, characterized in that: The high-pressure nozzle (3) is also provided with at least one third air port (36), and the third air port (36) is arranged downward; A second partition structure (22) is arranged at a lower portion of the first partition structure (20), one side of the second partition structure (22) is connected to the inner protective steel shell (17), and the other side of the second partition structure (22) is connected to the outer protective steel shell (16); The water jet port (31) and the third air port (36) are both located at the lower part of the second partition structure (22); The first partition structure (20), the outer protective steel shell (16), the inner protective steel shell (17) and the arc-shaped connecting piece (19) form a first inner cavity; The first partition structure (20), the outer protective steel shell (16), the inner protective steel shell (17) and the second partition structure (22) form a second inner cavity; The first inner cavity is an arc-shaped water pipe section (21), and the second inner cavity is an arc-shaped air pipe section (23). The water jet port (31) is connected to the arc-shaped water pipe section (21), and the arc-shaped water pipe section (21) is connected to at least one water supply channel (7); the third air port (36) is connected to the arc-shaped air pipe section (23), and the arc-shaped air pipe section (23) is connected to at least one air supply channel (8).

23. The cylinder device with the function of sinking and reducing drag according to claim 22, characterized in that: An annular portion (43) is connected between the first partition structure (20) and the second partition structure (22); a connecting hole (42) is provided in the middle of the annular portion (43); and the connecting hole (42) passes through the first partition structure (20) and the second partition structure (22); A water pipe head (44) is provided on the upper part of the high-pressure nozzle (3), and the water pipe head (44) is respectively connected to the arc-shaped water pipe section (21) and the water injection port (31); The water pipe head (44) is provided with an air pipe head (45) on the outside, and the water pipe head (44) and the air pipe head (45) form a gas channel one (35), and the gas channel one (35) is connected to the third gas port (36). The air pipe head (45) extends into the connecting hole (42), and the air pipe head (45) is connected to the annular portion (43); a hole one (37) is provided through the hole wall of the connecting hole (42), and the hole one (37) is connected to the arc-shaped air pipe section (23); a hole two (38) is correspondingly provided through the tube wall of the air pipe head (45), and the hole two (38) is respectively connected to the gas channel one (35) and the hole one (37).

24. A cylinder device with a sinking drag reduction function according to claim 23, characterized in that: A second side hole (40) is provided through the side wall of the inner protective steel shell (17), and the second side hole (40) is connected with the arc-shaped air pipe section (23) and the air supply channel (8).

25. The cylinder device with the function of sinking and reducing drag according to claim 22, characterized in that: The arc-shaped connecting member (19) is provided with an arc-shaped air supply channel (24) arranged along the circumference of the cylinder (1), and the arc-shaped air supply channel (24) is connected to at least one air supply channel (8); A first air outlet (46) and a second air outlet (47) are provided at the top of the arc-shaped connecting member (19) along the length direction of the cylinder (1); the first air outlet (46) and the second air outlet (47) are both connected to the arc-shaped air supply channel (24); wherein, along the radial direction of the cylinder (1), the first air outlet (46) is located on the outside of the cylinder (1), and the second air outlet (47) is located on the inside of the cylinder (1).

26. The cylinder device with the function of sinking and reducing drag according to claim 25, characterized in that: A third side hole (41) is provided on the side wall of the inner protective steel shell (17) or on the side wall of the arc-shaped connecting member (19), and the third side hole (41) is respectively connected to the arc-shaped air supply channel (24) and at least one air supply channel (8).

27. The cylinder device with the function of sinking and reducing drag according to claim 1, characterized in that: A plurality of arc-shaped water pipe sections (21) are arranged at the lower part of the cylinder (1), the arc-shaped water pipe sections (21) are arranged along the circumference of the cylinder (1), the arc-shaped water pipe sections (21) are arranged along the circumference of the cylinder (1), the arc-shaped water pipe sections (21) are connected to at least one of the water ejection ports (31), and the arc-shaped water pipe sections (21) are connected to at least one water supply channel (7).

28. The cylinder device with the function of sinking and reducing drag according to claim 27, characterized in that: The high-pressure nozzle (3) is detachably connected to the bottom of the corresponding arc-shaped water pipe section (21).

29. The cylinder device with the function of sinking and reducing drag according to claim 27, characterized in that: There are a plurality of water supply channels (7), and at least two of the arc-shaped water pipe sections (21) are independently connected to a water supply channel (7).

30. The cylinder device with the function of sinking and reducing drag according to claim 27, characterized in that: All arc-shaped water pipe sections (21) are connected end to end in sequence to form an annular water pipe (4).

31. The cylinder device with the function of sinking and reducing drag according to claim 27, characterized in that: A second partition device (49) is provided between adjacent arc-shaped water pipe sections (21), and adjacent arc-shaped water pipe sections (21) can be partitioned from each other by corresponding second partition devices (49). The arc-shaped water pipe sections (21) between adjacent second partition devices (49) are connected to at least one water supply channel (7).

32. The cylinder device with the function of sinking and reducing drag according to claim 27, characterized in that: All arc-shaped water pipe sections (21) include a first inner tube (12) and a first outer tube (13) sleeved on the outside of the first inner tube (12); a first annular cavity is provided between the first inner tube (12) and the first outer tube (13); one of the first inner tube (12) and the first annular cavity is connected to at least one water ejection port (31) and at least one water supply channel (7); and the other is connected to at least one third air port (36) and at least one air supply channel (8).

33. The cylinder device with the function of sinking and reducing drag according to claim 1, characterized in that: A plurality of arc-shaped external air pipe segments (6) are arranged on the outer side of the lower part of the cylinder (1); the arc-shaped external air pipe segments (6) are arranged along the circumference of the cylinder (1); the arc-shaped external air pipe segments (6) are arranged along the circumference of the cylinder (1); the arc-shaped external air pipe segments (6) are connected to the first air outlet (46); and the arc-shaped external air pipe segments (6) are connected to at least one air supply channel (8).

34. A cylinder device with a sinking drag reduction function according to claim 33, characterized in that: There are a plurality of air supply channels (8), and at least two of the arc-shaped outer air pipe sections (6) are independently connected to an air supply channel (8).

35. The cylinder device with the function of sinking and reducing drag according to claim 33, characterized in that: All arc-shaped outer trachea segments (6) are connected end to end in sequence to form a ring-shaped trachea.

36. The cylinder device with the function of sinking and reducing drag according to claim 1, characterized in that: A plurality of second air outlets (47) are arranged on the inner side of the lower part of the cylinder (1), and the plurality of second air outlets (47) are arranged along the circumference of the cylinder (1), the second air outlets (47) are arranged upward, and the air supply channel (8) is connected to at least one of the second air outlets (47).

37. A cylinder device with a sinking drag reduction function according to claim 36, characterized in that: A plurality of arc-shaped inner air pipe sections (29) are arranged on the inner side of the lower part of the cylinder (1); the arc-shaped inner air pipe sections (29) are arranged along the circumference of the cylinder (1); the arc-shaped inner air pipe sections (29) are arranged along the circumference of the cylinder (1); the arc-shaped inner air pipe sections (29) are connected to the second air outlet (47); and the arc-shaped inner air pipe sections (29) are connected to at least one of the air supply channels (8).

38. The cylinder device with the function of sinking and reducing drag according to claim 37, characterized in that: There are a plurality of air supply channels (8), and at least two of the arc-shaped inner air pipe sections (29) are independently connected to an air supply channel (8).

39. The cylinder device with the function of sinking and reducing drag according to claim 37, characterized in that: All arc-shaped inner trachea sections (29) are connected end to end in sequence to form a ring-shaped trachea.

40. A cylinder device with a sinking drag reduction function according to any one of claims 1 to 39, characterized in that: At least two water jetting ports (31) are provided on the high-pressure nozzle (3), and the plane formed by the jet water of at least two water jetting ports (31) on the same high-pressure nozzle (3) is tangent to the wall of the cylinder (1).

41. A cylinder device with a sinking drag reduction function according to any one of claims 1 to 39, characterized in that: The high-pressure nozzle (3) is spherical.

42. A cylinder device with a sinking drag reduction function according to claim 41, characterized in that: The high-pressure nozzle (3) has a water spray chamber (48) in communication with the water spray port (31), and the cross section of the water spray chamber (48) gradually decreases in the direction from the spherical center to the water spray port (31).

43. A cylinder device with a sinking drag reduction function according to any one of claims 1 to 39, characterized in that: The high-pressure nozzle (3) is also provided with at least one third air port (36), the third air port (36) being arranged downward, and the third air port (36) being able to communicate with at least one air supply channel (8).

44. A cylinder device with a sinking drag reduction function according to claim 43, characterized in that: A gas channel one (35) is provided in the high-pressure nozzle (3), and the gas channel one (35) is connected to the gas supply channel (8) and the third gas port (36).

45. The cylinder device with sinking drag reduction function according to claim 43, characterized in that: At least one of the third air ports (36) is arranged corresponding to a water jet port (31), wherein: The third air port (36) is sleeved on the outer side of the corresponding water jet port (31); or, The water jet port (31) is sleeved on the outside of the corresponding third air port (36).

46. ​​A cylinder device with a sinking drag reduction function according to any one of claims 1 to 39, characterized in that: The arrangement spacing between adjacent high-pressure nozzles (3) is less than or equal to 1 / 20 of the radius of curvature R1 of the cross section where the high-pressure nozzles (3) are located.

47. A cylinder device with a sinking drag reduction function according to any one of claims 1 to 39, characterized in that: The output water pressure of the water jet port (31) is P, 10MPa≤P≤100MPa.

48. A cylinder device with a sinking drag reduction function according to any one of claims 1 to 39, characterized in that: The wall thickness of the cylinder (1) is d1, 1cm≤d1≤10cm.

49. A construction method for a cylinder device with a sinking drag reduction function as claimed in any one of claims 1 to 39, characterized in that: The following steps are involved: The cylinder (1) is hoisted at a designed position on the seabed surface and a certain hoisting force is maintained; The cylinder (1) sinks, and the water jet port (31) ejects a high-pressure water jet (33); After the cylinder (1) reaches the designed depth, the water jet port (31) stops jetting the high-pressure water jet (33).

50. According to the construction method of a cylinder device with a sinking drag-reducing function as described in claim 49, during the sinking process of the cylinder body (1), the posture of the cylinder device is adjusted by switching at least one of the water ejection ports (31).

51. A construction method for a cylinder device with a sinking drag reduction function according to claim 49: A plurality of first air outlets (46) are arranged on the outer side of the lower part of the cylinder (1), and the plurality of first air outlets (46) are arranged along the circumference of the cylinder (1), and the first air outlets (46) are arranged upwards; A plurality of second air outlets (47) are arranged on the inner side of the lower part of the cylinder (1), and the plurality of second air outlets (47) are arranged along the circumference of the cylinder (1), and the second air outlets (47) are arranged upwards; The construction method comprises the following steps: The cylinder (1) sinks, the water jet port (31) jets a high-pressure water jet (33), and the first air outlet (46) and the second air outlet (47) both jet gas to form an air curtain; After the cylinder (1) reaches the designed depth, the water jet port (31) stops jetting the high-pressure water jet (33), and the first gas outlet (46) and the second gas outlet (47) both stop jetting gas.

52. According to the construction method of a cylinder device with a sinking drag reduction function as described in claim 51, during the sinking process of the cylinder body (1), the posture of the cylinder device is adjusted by switching at least one of the water ejection ports (31) and / or switching at least one of the first air outlets (46) and / or switching at least one of the second air outlets (47).

53. According to a construction method of a cylinder device with a sinking drag reduction function as described in any one of claims 50-52, after the cylinder body (1) sinks to a designed depth, grouting is performed into the water supply channel (7).

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