WO2020211065A1 - Appareil de rinçage haute pression pour jambe de pieu de plate-forme en mer - Google Patents

Appareil de rinçage haute pression pour jambe de pieu de plate-forme en mer Download PDF

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Publication number
WO2020211065A1
WO2020211065A1 PCT/CN2019/083345 CN2019083345W WO2020211065A1 WO 2020211065 A1 WO2020211065 A1 WO 2020211065A1 CN 2019083345 W CN2019083345 W CN 2019083345W WO 2020211065 A1 WO2020211065 A1 WO 2020211065A1
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WIPO (PCT)
Prior art keywords
pile
pressure
water
pipe
boot
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PCT/CN2019/083345
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English (en)
Chinese (zh)
Inventor
陈鹏宇
李飞
周锋
朱俊峰
施晓越
Original Assignee
江苏亨通蓝德海洋工程有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 江苏亨通蓝德海洋工程有限公司 filed Critical 江苏亨通蓝德海洋工程有限公司
Priority to PCT/CN2019/083345 priority Critical patent/WO2020211065A1/fr
Publication of WO2020211065A1 publication Critical patent/WO2020211065A1/fr

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor

Definitions

  • the invention relates to the technical field of washing off surrounding soil and other obstacles when pulling out piles of offshore platforms, and specifically relates to a high-pressure flushing device for the legs of offshore platforms.
  • the legs of offshore platforms are mostly cylindrical or square columns with steel structure, and the lower part of the legs is supported by pile boots.
  • Foreign geology generally does not require flushing devices.
  • China coastal geology has thick clay layers and different operating locations.
  • the soil properties are different, the stratum is complex, and the geology is loose.
  • the pile shoe enters deep into the mud, the pulling out resistance greatly exceeds the ultimate pulling out capacity that the platform structure can withstand. Therefore, the pulling out requires flushing or other methods to reduce the resistance during pulling out to achieve high pile pulling out efficiency.
  • the platform will be designed with a flushing system that takes over inside the pile legs, but the flow and pressure are difficult to quickly wash away the soil attached to the pile boots. Because the pressure is too small, sometimes it is easy to plug the sprinkler of the outlet pipe when inserting the pile and operate it. It is difficult and it is difficult to achieve the effect of high-speed pile pulling. Therefore, an improved technology is urgently needed to solve this problem in the prior art.
  • the purpose of the present invention is to provide a high-pressure flushing device for the leg of an offshore platform, which has a large flow and pressure, and uses the outer tube of the leg to directly drain to the top of the leg, and directly enters water from the top of the leg to flush the pile boot, forming a large
  • the impact force makes the adhesion of the soil body weakened, reduces the friction between the pile legs, pile shoes and the soil body, thereby reducing the pile extraction pressure, and finally achieves rapid and efficient pile extraction to solve the above-mentioned background art problems. .
  • a high-pressure flushing device for the legs of an offshore platform, including a suction pipe, a coarse water filter, a hard suction pipe, a high-pressure pump, an inlet hose, a stop check valve, and a four-way Joints, stainless steel ball valves, safety valves, water outlet pipes, water pipe reels, high-pressure water outlet hoses, pile outlet pipes, brackets, boot top outlet pipes, boot bottom outlet pipes, boot top nozzles, boot bottom nozzles, pile legs, solid Pile frame, deck, pile shoe, the bottom of the leg is provided with a pile shoe, the outer side of the leg is provided with a fixed pile frame, the periphery of the fixed pile frame is provided with a deck, and the deck is provided with a high-pressure pump.
  • One end of the high-pressure pump is connected with a hard suction pipe, the hard suction pipe and the suction pipe are connected by a coarse water filter, the other end of the high-pressure pump is connected with a stop check valve through an inlet hose, the stop check
  • the valve is respectively connected to a pipe with a safety valve and two outlet pipes through a four-way joint.
  • Each outlet pipe is provided with a stainless steel ball valve.
  • the two outlet pipes are connected to a high-pressure outlet hose.
  • the water outlet hose is hovered on the water pipe reel, the water pipe reel is arranged on the top of the fixed pile frame, and the water outlet of the high pressure water outlet hose is placed on the top of the pile leg and connected with the water outlet pipe in the pile,
  • the top of the pile leg is provided with a bracket, the bracket supports the connection port of the high-pressure water outlet hose and the outlet pipe in the pile, the outlet pipe in the pile and the boot outlet pipe and the boot in the pile shoe
  • the bottom water outlet pipes are connected, and the boot top water outlet pipe and the boot bottom water outlet pipe are respectively connected with a boot top nozzle and a boot bottom nozzle.
  • the water pipe reel is a hysteresis type two-way water pipe reel.
  • boot top nozzles there are several boot top nozzles and boot bottom nozzles.
  • the method of use includes the following steps:
  • Step 1 When pulling out the pile, when the platform drops to sea level and the draft is about 3 meters or more, first close the stainless steel ball valves of the two outlet pipes, turn on the fire pump, and divert water. When you feel that there is a certain amount of water in the high-pressure pump When pressing, the high-pressure pump switch can be activated;
  • Step 2 Through the action of the pump, the water is sucked from the sea from the suction pipe, and then through the coarse water filter, into the high-pressure pump placed on the inner deck of the fixed pile frame through the suction pipe;
  • Step 3 When the pressure reaches the rated pressure, the safety valve will open at this time, and the water will flow out. After subtracting the pressure, open the stainless steel ball valve for the other two channels and flow upward through the outlet pipe to the high-pressure water outlet attached to the surface of the leg. tube;
  • Step 4 With the pulling height of the pile leg, the drag force of the pile leg on the high-pressure water outlet hose is greater than the torque transmitted by the hysteresis coupling, the water pipe reel rotates in the direction of the cable release, and the high-pressure water outlet hose is released , And the existence of the special torque coupling function of the magnetic field of the hysteresis coupling can ensure that the high-pressure water outlet hose will not slip off the reel due to gravity, and the high-pressure water outlet hose will be automatically retracted and released;
  • Step 5 Through the high-pressure water outlet hose, reach the pile inner water outlet pipe on the top bracket of the pile leg. After pressure and water weight, it directly rushes to the boot top outlet pipe inside the pile boot and the boot bottom outlet pipe, and finally rushes to the bottom boot accordingly. Top nozzles and boot bottom nozzles, thereby generating huge pressure and flow;
  • Step 6 As the pile legs are pulled out, the soil on the top and bottom of the boot is continuously washed to effectively reduce the resistance of the soil to the pile legs, thereby quickly pulling out the pile.
  • Pile boots are very small in transformation to ensure their own strength; the water pressure is relatively large, and the flow is sufficient to wash away the soil of the pile legs and pile boots; the use of hysteresis dual-channel water pipe reel, through the hysteresis connection
  • the function of the shaft device can automatically retract and release the high-pressure water pipe.
  • the water pipe passes through the top of the pile leg, and the water is converted into impact kinetic energy through high potential energy.
  • the structure is simple, and the water can be continuously flushed when pulling out the pile, without considering the position of the leg movement; relative to the take-over flushing, it reduces the resistance of the interface backflow, and the operation is convenient and simple; it can be used according to the demand when pulling out the pile.
  • the flushing pressure and flow rate of the top and bottom of the boot are adjusted to achieve efficient flushing of the soil attached to the pile boot and achieve rapid pile extraction.
  • Figure 1 is a schematic diagram of the structure of the present invention.
  • Figure 2 is a schematic diagram of the deck position structure of the present invention.
  • Figure 3 is a schematic diagram of the top structure of the pile shoe.
  • Figure 4 is a schematic diagram of the bottom structure of the pile shoe.
  • suction pipe 1 coarse water filter 2
  • suction hard pipe 3 high pressure pump 4
  • inlet hose 5 stop check valve 6
  • stop check valve 6 four-way joint 7
  • stainless steel ball valve 8 safety valve 9
  • water outlet pipe 10 Water pipe reel 11, high pressure water outlet hose 12, pile inner outlet pipe 13, bracket 14, boot top outlet pipe 15, boot bottom outlet pipe 16, boot top nozzle 17, boot bottom nozzle 18, pile leg 19, pile fixing frame 20.
  • a high-pressure flushing device for the legs of an offshore platform, including a suction pipe 1, a coarse water filter 2, a hard suction pipe 3, a high-pressure pump 4, and an inlet hose 5.
  • the pile frame 20 is provided with a deck 21 on the periphery of the fixed pile frame 20.
  • a high-pressure pump 4 is provided on the deck 21.
  • One end of the high-pressure pump 4 is connected with a hard suction pipe 3, and a coarse water filter is passed between the suction hard pipe 3 and the suction pipe 1. 2 is connected, the other end of the high-pressure pump 4 is connected to a stop check valve 6 through an inlet hose 5, and the stop check valve 6 is connected to a pipe with a safety valve 9 and two water outlet pipes 10 through a four-way joint 7.
  • Each outlet pipe 10 is equipped with a stainless steel ball valve 8. The two outlet pipes 10 are connected to the high-pressure outlet hose 12.
  • the high-pressure outlet hose 12 is hovered on the hysteresis dual-channel water pipe reel 11, and the water pipe reel 11 is arranged at On the top of the fixed pile frame 20, the water outlet of the high-pressure water outlet hose 12 is placed on the top of the pile leg 19 and connected with the pipe 13 in the pile.
  • the top of the pile leg 19 is provided with a bracket 14 which supports the high-pressure water outlet.
  • the connection port of the pipe 12 and the outlet pipe 13 in the pile, the outlet pipe 13 in the pile communicates with the top outlet pipe 15 and the boot bottom outlet pipe 16 in the pile shoe 22, and the boot top outlet pipe 15 and the boot bottom outlet pipe 16 are respectively connected Boot top nozzle 17 and boot bottom nozzle 18.
  • a high-pressure flushing device for legs of an offshore platform, and its use method includes the following steps:
  • Step 1 When pulling out the pile, when the platform drops to sea level and the draft is about 3 meters or more, first close the stainless steel ball valves 8 of the two outlet pipes 10, turn on the fire pump, and divert water. When you feel that there is something in the high-pressure pump 4 At a certain water pressure, the high-pressure pump 4 can be switched on;
  • Step 2 Through the action of the pump, suck water from the water suction pipe 1 from the sea, pass through the coarse water filter, and enter the high pressure pump 4 placed on the inner deck 21 of the fixed pile frame 20 through the water suction hard pipe 3;
  • Step 3 Through the action of the pump, the maximum water pressure of 5MPa can be output.
  • the four-way joint 7 is divided into three channels, and all the way to the safety valve 9 pipeline.
  • the safety valve 9 will open, and the water will flow out.
  • the pressure is subtracted.
  • the other two ways open the stainless steel ball valve 8, and flow upwards through the outlet pipe 10 into the high-pressure water outlet hose attached to the surface of the leg 19 12.
  • the high-pressure water outlet hose is hovering on the hysteresis dual-channel water pipe reel 11, and the hysteresis dual-channel water pipe reel is placed on the top of the fixed pile frame 20;
  • Step 4 With the pull-out height of the leg 19, the drag force of the leg 19 on the high-pressure water outlet hose 12 is greater than the torque transmitted by the hysteresis coupling, the water pipe reel rotates in the direction of the cable release, and the high-pressure water outlet hose 12 is released, and the existence of the special torque coupling function of the magnetic field of the hysteresis coupling can ensure that the high-pressure water outlet hose 12 does not slip off the reel due to gravity, and the high-pressure water outlet hose 12 is automatically retracted and released;
  • Step 5 Through the high-pressure water outlet hose 12, reach the pile inner outlet pipe 13 on the top bracket 14 of the pile leg 19, and directly rush to the pile boot 22 inner boot top outlet pipe 15 and boot bottom outlet pipe 16 under pressure and water weight. , And finally rush to the bottom boot top nozzle 17 and boot bottom nozzle 18 accordingly, thereby generating huge pressure and flow;
  • Step 6 As the pile leg 19 is pulled out, the soil on the top and bottom of the boot is continuously washed, so as to efficiently reduce the resistance of the soil to the pile leg 19, thereby quickly pulling out the pile.

Abstract

La présente invention concerne un appareil de rinçage haute pression pour jambe de pieu d'une plate-forme en mer, le sabot de pieu étant modifié pour être très petit afin d'assurer la résistance de celui-ci ; la pression d'eau est relativement élevée et le débit est suffisant pour rincer la terre des jambes et des sabots de pieu ; le système consiste à utiliser un enrouleur de tuyau d'eau bidirectionnel à hystérésis, permettant de rétracter et de libérer automatiquement le tuyau d'eau haute pression par l'action d'un couplage à hystérésis, le tuyau d'eau passant à travers la partie supérieure de la jambe de pieu, et l'eau étant convertie en énergie cinétique d'impact au moyen d'une énergie potentielle élevée ; la structure du système est simple, et un rinçage continu peut être obtenu lors du retrait de pieu, sans avoir besoin de considérer la position du mouvement de la jambe de pieu ; par comparaison au rinçage de tuyau par raccordement, la résistance au reflux d'interface est réduite, et le fonctionnement est pratique et simple ; la pression de rinçage et le débit au sommet et à la partie inférieure du sabot peuvent être ajustés en fonction des exigences de retrait de pieu, ce qui permet d'effectuer un lavage efficace de la terre fixée au sabot du pieu et un retrait rapide du pieu.
PCT/CN2019/083345 2019-04-19 2019-04-19 Appareil de rinçage haute pression pour jambe de pieu de plate-forme en mer WO2020211065A1 (fr)

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PCT/CN2019/083345 WO2020211065A1 (fr) 2019-04-19 2019-04-19 Appareil de rinçage haute pression pour jambe de pieu de plate-forme en mer

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PCT/CN2019/083345 WO2020211065A1 (fr) 2019-04-19 2019-04-19 Appareil de rinçage haute pression pour jambe de pieu de plate-forme en mer

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112796292A (zh) * 2021-02-02 2021-05-14 南通泰胜蓝岛海洋工程有限公司 一种海上升压站的高强度柱腿桩靴
CN114396043A (zh) * 2022-01-20 2022-04-26 中船黄埔文冲船舶有限公司 一种桩靴冲洗装置
CN115094894A (zh) * 2022-06-16 2022-09-23 中船黄埔文冲船舶有限公司 一种桩靴助力装置及其水上设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06240670A (ja) * 1993-02-22 1994-08-30 Kajima Corp 杭引抜き方法及び装置
CN105002875A (zh) * 2015-08-07 2015-10-28 江苏蓝潮海洋风电工程建设有限公司 一种海上平台桩腿高压冲水装置
CN204825836U (zh) * 2015-08-07 2015-12-02 江苏蓝潮海洋风电工程建设有限公司 一种海上平台桩腿高压冲水装置
CN106869127A (zh) * 2017-02-16 2017-06-20 广东精铟海洋工程股份有限公司 一种具有增压喷头的海上平台桩靴喷水装置
CN110130296A (zh) * 2019-04-18 2019-08-16 江苏亨通蓝德海洋工程有限公司 一种海上平台桩腿高压冲水装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06240670A (ja) * 1993-02-22 1994-08-30 Kajima Corp 杭引抜き方法及び装置
CN105002875A (zh) * 2015-08-07 2015-10-28 江苏蓝潮海洋风电工程建设有限公司 一种海上平台桩腿高压冲水装置
CN204825836U (zh) * 2015-08-07 2015-12-02 江苏蓝潮海洋风电工程建设有限公司 一种海上平台桩腿高压冲水装置
CN106869127A (zh) * 2017-02-16 2017-06-20 广东精铟海洋工程股份有限公司 一种具有增压喷头的海上平台桩靴喷水装置
CN110130296A (zh) * 2019-04-18 2019-08-16 江苏亨通蓝德海洋工程有限公司 一种海上平台桩腿高压冲水装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112796292A (zh) * 2021-02-02 2021-05-14 南通泰胜蓝岛海洋工程有限公司 一种海上升压站的高强度柱腿桩靴
CN112796292B (zh) * 2021-02-02 2022-08-09 南通泰胜蓝岛海洋工程有限公司 一种海上升压站的高强度柱腿桩靴
CN114396043A (zh) * 2022-01-20 2022-04-26 中船黄埔文冲船舶有限公司 一种桩靴冲洗装置
CN115094894A (zh) * 2022-06-16 2022-09-23 中船黄埔文冲船舶有限公司 一种桩靴助力装置及其水上设备

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