Ship descending, pile pulling and spraying auxiliary device and using method thereof

Abstract

The invention relates to a ship descending and pile pulling jetting auxiliary device and a using method thereof.The device comprises a jetting device body which is of an annular structure, a flushing medium circulates in the jetting device body, and the jetting device body is used for being arranged outside a pile leg in a sleeving mode and flushing the pile leg; the spraying and flushing medium source is communicated with the spraying and flushing device body through a spraying and flushing pipeline and used for providing flushing media for the spraying and flushing device body; and the winch pulley assembly is connected with the spraying device body through a winch steel wire rope and used for hoisting the spraying device body, so that the spraying device body moves up and down along the pile leg, and different parts of the pile leg are washed. Soil covering on the upper surface of the pile leg can be scoured, pile pulling resistance is reduced, time and labor are saved, and cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of offshore drilling, in particular to a ship lowering and pile pulling jetting auxiliary device and a use method thereof. BACKGROUND

[0002] The upper surface of the jack-up platform is affected by long-term silt deposition, and the accumulated cover is relatively solid, which is not conducive to the next ship lowering and pile pulling operation, not only prolongs the operation cycle and increases the towing cost, but also may cause additional expenses.

[0003] During the pile pulling process, the three main factors that hinder the pile leg from being lifted are: pile tip adsorption force, friction force between the cover and the pile leg, and cover gravity. Among them, the cover is a crucial factor that hinders the pile leg from being lifted. SUMMARY

[0004] In view of the above problems, the purpose of the present application is to provide a ship lowering and pile pulling jetting auxiliary device and a use method thereof, which can realize the flushing of the upper surface of the pile leg to reduce the pile pulling resistance, save time and effort, and reduce cost.

[0005] To achieve the above purpose, the present application adopts the following technical solutions: The ship lowering and pile pulling jetting auxiliary device provided by the present application comprises: a jetting device body, which is in a ring structure and has a flushing medium flowing through the inside, is used for being sleeved on the pile leg and flushing the pile leg; a jetting medium source, which is communicated with the jetting device body through a jetting pipeline, is used for providing the jetting device body with flushing medium; and a winch pulley assembly, which is connected with the jetting device body through a winch steel wire rope, is used for lifting the jetting device body, so that the jetting device body moves up and down along the pile leg, thereby flushing different parts of the pile leg.

[0006] Preferably, the jetting device body comprises: a first arc-shaped shell structure and a second arc-shaped shell structure, a first end of the first arc-shaped shell structure is detachably connected with a first end of the second arc-shaped shell structure through a flared mouth-shaped quick connector, a second end of the first arc-shaped shell structure is hinged with a second end of the second arc-shaped shell structure through a three-section high-strength hinge, and on the hinged side, the first arc-shaped shell structure and the second arc-shaped shell structure are communicated through a communication hose, the bottom of the first arc-shaped shell structure and the second arc-shaped shell structure is provided with a water outlet hole, and the first arc-shaped shell structure and the second arc-shaped shell structure are respectively provided with lifting lugs.

[0007] Preferably, the jetting device body further comprises a tightening steel wire rope, the tightening steel wire rope is arranged circumferentially around the inner wall of the shell of the jetting device body, and is used for abutting or opening the first end of the first arc-shaped shell structure and the first end of the second arc-shaped shell structure.

[0008] Preferably, one end of the jetting pipeline is connected to the jetting device body through a connecting joint, and the other end is connected to the jetting medium source.

[0009] Preferably, the winch pulley assembly comprises a guide pulley and a fixed support, the fixed support is arranged on the experimental platform, the guide pulley is connected to the fixed support, and the guide pulley provides a guide function for the winch steel wire rope; the hand winch is arranged on the experimental platform and is used to wind the winch steel wire rope to lift the jetting device body.

[0010] Preferably, a plurality of guide blocks are uniformly arranged on the inner ring wall of the jetting device body, and the guide blocks are used to reduce the friction between the jetting device body and the pile leg.

[0011] Preferably, the jetting device body is fixed to the pile leg through the marine pile leg clamping buckle.

[0012] Preferably, the jetting device body further comprises a high-pressure jetting device, the high-pressure jetting device comprises a high-pressure pipeline, an air compressor and a central control device; one end of the high-pressure pipeline is connected to the jetting device body, and the other end is connected to the air compressor; the air compressor is electrically connected to the central control device; the high-pressure jetting device is used to provide high-pressure gas for the jetting device body, so that the jetting device body can be jetted at high pressure.

[0013] The use method of the jetting auxiliary device for ship unloading and pile pulling comprises the following steps: A plurality of hand winches are assisted by a platform crane and arranged on the experimental platform on the upper part of the working fixed pile area for fastening; The jetting medium source is prepared, the hand winch is operated, the winch steel wire rope is released through the gap between the working fixed pile area and the pile leg, and the free end of the winch steel wire rope is close to the sea surface; The platform crane hoists the two-section ring-shaped device structure of the jetting device body and places it on the main deck of the auxiliary working tugboat near the stern; when the stern of the tugboat approaches the pile leg, the hand winch steel wire rope is released according to actual needs, the free end of the steel wire rope is connected to the two-section ring-shaped device structure of the jetting device body, and the closing of the jetting device is realized by collecting and tightening the hoop steel wire rope; The winch steel wire rope is connected to the lifting lug, and the on-site operator recovers the winch steel wire rope; Before the system works under pressure, it is checked whether the jetting device body of the ring-shaped structure moves up and down smoothly through the hand winch, and if it is smooth, the jetting device body is lowered to the mud surface. When the system works under pressure, the jetting medium enters the jetting device body through the jetting pipeline, the central control device controls the air compressor to provide high-pressure gas for the jetting device body through the high-pressure pipeline, and the jetting device body performs high-pressure jetting work.

[0014] The present application has the following advantages due to the above technical solutions: (1) The present application uses a hand winch to move the activity through a steel wire rope, so that the flexibility and maneuverability of the jetting operation are higher; (2) The present application has low facility cost and can be reused; (3) The present application has high durability technical requirements for the jetting pipeline, which is convenient for self-elevating platforms serving in the same place for a long time to shorten the jack-up pile pulling cycle; (4) The present application directly shortens the jack-up pile pulling operation cycle and reduces the increase of economic cost derived from the delay of towing displacement. BRIEF DESCRIPTION OF DRAWINGS

[0015] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are for purposes of illustration only and are not considered a limitation of the present application. Throughout the drawings, the same reference numerals are used for the same components. In the drawings: Figure 1 is a schematic diagram of the overall structure of the present application; Figure 2 is a schematic diagram of the arrangement of the hand winch of the present application; Figure 3 is a schematic diagram of the structure of the jetting device body of the present application; Figure 4 is a schematic diagram of the structure of the connecting joint of the present application; Figure 5 is a schematic diagram of the overall structure of the present application, including the ocean pile leg engagement buckle and the high-pressure jetting device.

[0016] The reference numerals in the drawings are as follows: 1-jetting device body; 101-first arc-shaped shell structure; 102-second arc-shaped shell structure; 103-fast connecting joint; 104-three-section high-strength hinge; 105-communication hose; 106-lifting lug; 107-tightening steel wire rope; 2-pile leg; 3-jetting medium source; 4-jetting pipeline; 401-connecting joint; 5-winch pulley assembly; 501-guide pulley; 502-fixed support; 503-hand winch; 6-winch steel wire rope; 7-experimental platform; 8-guide block; 9-ocean pile leg engagement buckle; 10-high-pressure pipeline; 11-air compressor; 12-central control device. DETAILED DESCRIPTION

[0017] Exemplary embodiments of the present application will be described herein below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it is understood that the present application can be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.

[0018] The present application provides a kind of to reduce ship pulling out pile and sprays auxiliary device, by the whole body of spray flushing device body is divided into two sections, to reduce weight and facilitate installation, the present application can realize the surface of pile leg of scouring soil and reduce pulling out pile resistance, save time and effort, reduce cost.

[0019] As Figure 1 The present application provides a kind of to reduce ship pulling out pile and sprays auxiliary device, by the whole body of spray flushing device body is divided into two sections, to reduce weight and facilitate installation, the present application can realize the surface of pile leg of scouring soil and reduce pulling out pile resistance, save time and effort, reduce cost.

[0020] It should be noted that the spray flushing medium source can be a water tank containing water, a water pump is arranged in the water tank, and the spray flushing pipeline 4 is connected with the water pump to extract water medium. Of course, the spray flushing medium source can also be a device for directly providing flushing medium, such as a faucet.

[0021] In the above embodiment, preferably, as Figure 3 The spray flushing device body 1 includes: a first arc-shaped shell structure 101 and a second arc-shaped shell structure 102, a first end of the first arc-shaped shell structure 101 and a first end of the second arc-shaped shell structure 102 are detachably connected through a horn-shaped quick connector 103; a second end of the first arc-shaped shell structure 101 and a second end of the second arc-shaped shell structure 102 are hinged through a three-section high-strength hinge 104; and on the hinged side, the first arc-shaped shell structure 101 and the second arc-shaped shell structure 102 are communicated through a communication hose 105; the bottom of the first arc-shaped shell structure 101 and the second arc-shaped shell structure 102 is provided with a water outlet hole (not shown in the figure); the first arc-shaped shell structure 101 and the second arc-shaped shell structure 102 are respectively provided with lifting lugs 106.

[0022] In the above embodiments, preferably, the spraying device body 1 further includes a clamping steel wire rope 107, which is arranged circumferentially around the inner wall of the spraying device body 1, for connecting or opening the first end of the first arc-shaped shell structure 101 and the first end of the second arc-shaped shell structure 102. The clamping steel wire rope can be tightened manually or by an underwater robot.

[0023] In the above embodiment, preferably, one end of the jetting pipeline 4 is connected to the jetting device body 1 via a connecting joint 401 (see...). Figure 4 One end is connected to the other end, and the other end is connected to the jetting medium source 3.

[0024] In the above embodiments, preferably, the winch pulley assembly 5 includes: a guide pulley 501 and a fixed bracket 502, the fixed bracket 502 being mounted on the experimental platform 7, the guide pulley 501 being connected to the fixed bracket 502, and the guide pulley 501 being used to provide guidance for the winch wire rope 6; and a hand-cranked winch 503, mounted on the experimental platform 7, for cranking the winch wire rope 6 to lift the jetting device body 1.

[0025] It should be noted that, as Figure 2 As shown, in this embodiment, the winch pulley assembly 5 consists of three groups, which are evenly arranged on the experimental platform.

[0026] In the above embodiments, preferably, a plurality of guide blocks 8 are evenly arranged on the inner ring wall of the spraying device body 1, and the guide blocks 8 are used to reduce the friction between the spraying device body 1 and the pile leg 2.

[0027] In the above embodiments, preferably, as follows: Figure 5 As shown, the present invention also includes a marine pile leg engaging buckle 9, through which the jetting device body 1 is fixed to the pile leg 2. The marine pile leg engaging buckle 9 is an existing, mature device, and its specific structure will not be described in detail here.

[0028] In the above embodiments, preferably, the present invention further includes a high-pressure jetting device, which includes: a high-pressure pipeline 10, an air compressor 11, and a central control device 12; one end of the high-pressure pipeline 10 is connected to the jetting device body 1, and the other end is connected to the air compressor 11, and the air compressor 11 is electrically connected to the central control device 12; the high-pressure jetting device is used to provide high-pressure gas to the jetting device body 1 so that the jetting device body 1 can perform high-pressure jetting.

[0029] Additionally, it should be noted that the spraying pipeline and quick-connect fittings are made of 35CrMo material, and the spraying pipeline is an armored rigid pipe that meets the 15MPa working pressure requirement. The quick-connect fittings, spraying pipeline, and mounting brackets are coated with anti-corrosion protection measures.

[0030] The hand-cranked winches should be manual, suitable for single-person operation, with a lifting capacity of 300KG and a rope length of no less than 50 meters. A total of 3 units should be installed. After the jetting pipeline is welded, a 100% NDT test must be performed. The diameter of the jetting opening should be referenced from the diameter and number of the water outlet holes currently used in the pile leg: it is recommended that the number of holes not exceed 8, and the hole diameter be 30mm.

[0031] The present invention also provides a method for using the auxiliary device for lowering ships and extracting piles by jetting, comprising the following steps: S1. With the assistance of a platform crane, several manual winches are placed on the experimental platform above the working pile fixing area and secured tightly. S2. Prepare the jetting medium source, operate the manual winch, and release the winch wire rope through the gap between the working pile area and the pile leg until the free end of the winch wire rope is close to the sea surface. S3. The platform crane lifts the body of the two-section ring device structure spraying device and places it on the main deck of the auxiliary operation tugboat near the stern. When the stern of the tugboat approaches the pile leg, the manual winch wire rope is released simultaneously as needed. The free end of the wire rope is connected to the body of the two-section ring device structure spraying device, and the spraying device is closed by pulling the hoop wire rope. S4. Connect the winch wire rope to the lifting lug, and the on-site operator retrieves the winch wire rope. S5. Before the system is put into operation under pressure, check and confirm whether the ring structure spraying device body moves up and down smoothly by manual winch. If it moves smoothly, lower the spraying device body to the mud surface. S6. When the system is under pressure, the spraying medium enters the spraying device body through the spraying pipeline. The central control device controls the air compressor to provide high-pressure gas to the spraying device body through the high-pressure pipeline, and the spraying device body performs high-pressure spraying.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A jet blasting auxiliary device for lowering a ship and pulling out piles, characterized in that, include: The main body of the spraying device is a ring structure with a flushing medium flowing inside. It is used to be fitted over the pile leg and to flush the pile leg. A jetting medium source is connected to the jetting device body via a jetting pipeline and is used to provide a flushing medium to the jetting device body. The winch pulley assembly is connected to the spraying device body via a winch wire rope and is used to hoist the spraying device body so that the spraying device body can move up and down along the pile leg to wash different parts of the pile leg.

2. The auxiliary device for lowering ships and extracting piles according to claim 1, characterized in that, The main body of the jetting device includes: a first arc-shaped shell structure and a second arc-shaped shell structure, wherein the first end of the first arc-shaped shell structure and the first end of the second arc-shaped shell structure are detachably connected by a flared quick-connect joint. The second end of the first arc-shaped shell structure is hinged to the second end of the second arc-shaped shell structure by a three-segment high-strength hinge; Furthermore, on the hinge side, the first arc-shaped housing structure and the second arc-shaped housing structure are connected by a connecting hose; The bottom of the first arc-shaped shell structure and the second arc-shaped shell structure are provided with water outlet holes; The first arc-shaped shell structure and the second arc-shaped shell structure are respectively provided with lifting lugs.

3. The auxiliary device for lowering ships and extracting piles according to claim 2, characterized in that, The spraying device body also includes a clamping steel wire rope, which is arranged circumferentially around the inner wall of the spraying device body to connect or open the first end of the first arc-shaped shell structure and the first end of the second arc-shaped shell structure.

4. The auxiliary device for lowering ships and extracting piles according to claim 1, characterized in that, One end of the jetting pipeline is connected to the jetting device body via a connector, and the other end is connected to the jetting medium source.

5. The auxiliary device for lowering ships and extracting piles according to claim 1, characterized in that, The winch pulley assembly includes: A guide pulley and a fixed bracket are provided. The fixed bracket is used to be mounted on the experimental platform. The guide pulley is connected to the fixed bracket and is used to provide guidance for the winch wire rope. A hand-cranked winch, set on the experimental platform, is used to crank the winch wire rope to lift the main body of the jetting device.

6. The auxiliary device for lowering ships and extracting piles by jetting according to claim 1, characterized in that, Several guide blocks are evenly arranged on the inner ring wall of the jetting device body. The guide blocks are used to reduce the friction between the jetting device body and the pile leg.

7. The auxiliary device for lowering ships and extracting piles according to claim 1, characterized in that, It also includes marine pile leg engagement clips, through which the jetting device body is fixed to the pile leg.

8. The auxiliary device for lowering ships and extracting piles according to claim 1, characterized in that, It also includes a high-pressure jetting device, which comprises: a high-pressure pipeline, an air compressor, and a central control device; One end of the high-pressure pipeline is connected to the body of the jetting device, and the other end is connected to the air compressor. The air compressor is electrically connected to the central control device. The high-pressure jetting device is used to provide high-pressure gas to the jetting device body so that the jetting device body can perform high-pressure jetting.

9. A method of using the auxiliary device for lowering a ship and pulling up a pile based on any one of claims 1 to 8, characterized in that, Includes the following steps: Several manual winches were secured on the experimental platform above the working pile fixing area with the assistance of a platform crane. Prepare the jetting medium source, operate the manual winch, and release the winch wire rope through the gap between the working pile area and the pile leg until the free end of the winch wire rope is close to the sea surface. The platform crane lifts the two-section ring structure spraying device body and places it on the main deck of the auxiliary operation tugboat near the stern. When the stern of the tugboat approaches the pile leg, the manual winch wire rope is released simultaneously as needed. The free end of the wire rope is connected to the two-section ring structure spraying device body, and the spraying device is closed by pulling the hoop wire rope. Connect the winch wire rope to the lifting lug, and the on-site operator retrieves the winch wire rope. Before the system is pressurized, check and confirm whether the ring-shaped spraying device body moves smoothly up and down via a manual winch. If it moves smoothly, lower the spraying device body to the mud surface. When the system is under pressure, the spraying medium enters the spraying device body through the spraying pipeline. The central control device controls the air compressor to provide high-pressure gas to the spraying device body through the high-pressure pipeline, and the spraying device body performs high-pressure spraying.

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