CN110562399B - Extraction and water injection method for power boat in channel cofferdam area - Google Patents

Extraction and water injection method for power boat in channel cofferdam area Download PDF

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Publication number
CN110562399B
CN110562399B CN201910739352.1A CN201910739352A CN110562399B CN 110562399 B CN110562399 B CN 110562399B CN 201910739352 A CN201910739352 A CN 201910739352A CN 110562399 B CN110562399 B CN 110562399B
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valve
water
cofferdam
self
pump
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CN110562399A (en
Inventor
吴德绪
谢向荣
彭旭
黄新磊
倪晖
倪锦初
熊焰
胡海荣
焦宝山
石裕
徐敬新
张波
舒畅
汪桂林
胡田清
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Changjiang Institute of Survey Planning Design and Research Co Ltd
China Harzone Industry Corp Ltd
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Changjiang Institute of Survey Planning Design and Research Co Ltd
China Harzone Industry Corp Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/001—Arrangements, apparatus and methods for handling fluids used in outboard drives
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00—Keeping dry foundation sites or other areas in the ground
    • E02D19/02—Restraining of open water
    • E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/10—Measures concerning design or construction of watercraft hulls

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ocean & Marine Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Paleontology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

The invention discloses a power boat and a pumping and water filling method for a channel cofferdam area, wherein a diesel engine (1), a first hydraulic pump (3) of a clutch (2), a second hydraulic pump (4), a fuel tank (5), a hydraulic oil tank (6), a self-priming pumping and water filling pump (7) and a hydraulic motor (8) are arranged in the power boat (10); a hydraulic propeller (9) is arranged at the tail part of a deck of the power boat (10); a diesel engine (1) is arranged in the power boat (10), one end of the diesel engine (1) is connected with a first hydraulic pump (3) through a clutch (2), and the other end of the diesel engine is connected with a second hydraulic pump (4) through a belt; the hydraulic pump overcomes the defects that the section of the earth-rock cofferdam is large and can not be recycled in the prior art, and reduces the waiting time of the operation of the whole cofferdam area through the designed hydraulic pump.

Description

Extraction and water injection method for power boat in channel cofferdam area
Technical Field
The invention relates to the technical field of emergency rescue and quick repair of water diversion engineering, in particular to a method for pumping and injecting water for a power boat in a channel cofferdam area.
Background
Conventional cofferdam materials are generally earth and stones, concrete, masonry, steel sheet piles and the like, and the current research on repairing cofferdams by channels is basically focused on steel cofferdams. The concrete and masonry cofferdam is not suitable for construction under the water delivery condition, so that the concrete underwater formwork erection and dismantling are difficult, and the existing canal lining is influenced; the earth-rock cofferdam section is bigger, can not reuse, and water and soil loss can lead to total main canal along the water delivery siphon of line and channel siltation, influence the channel water delivery ability, have certain pollution to the channel water, inapplicable.
The existing steel cofferdam assembly is time-consuming and labor-consuming to install and position on water and is high in installation difficulty. For this reason, development of a power boat device, which is one of the very important components of a cofferdam system, plays a very important auxiliary role in cofferdam installation and positioning.
The difficulty of the technical scheme design is determined by the working environment and the function implementation characteristics of cofferdam equipment, and the technical scheme is as follows:
(1) the cofferdam equipment works in a drinking water canal, and the power boat is required to meet the environmental protection requirement, so that the design difficulty of the power boat is increased, and the power boat is mainly characterized in that the material selection, equipment type selection, paint selection and the like of the power boat, in particular the cooling mode and exhaust of a diesel engine.
(2) The state that the cofferdam equipment is assembled and withdrawn and is sunken and floated is realized through water injection and water pumping of the power boat, and a self-priming pump with enough displacement and larger suction height is selected through calculation, so that the time and operation environment limiting requirements of the cofferdam equipment for assembling and withdrawing are met.
(3) The whole floating state balance control in the assembly and withdrawal process of cofferdam equipment is realized through the functional design of a power boat.
And the movement of the A O4 EA cofferdam equipment needs the assistance of the power boat to provide enough power, meets the operation and movement requirements of the cofferdam equipment, and indirectly restricts the optional range of related equipment in the power boat due to the limited external dimension of the power boat.
There is a need for a device or drainage system that addresses the above-described problems.
Disclosure of Invention
A first object of the present invention is to overcome the above-mentioned drawbacks of the background art and to propose a power boat for a channel cofferdam area.
The first object of the present invention is achieved by the following technical solutions: the power boat for the channel cofferdam area is internally provided with a diesel engine, a first hydraulic pump of a clutch, a second hydraulic pump, a fuel tank, a hydraulic oil tank, a self-priming water pump and a hydraulic motor; the tail part of the deck of the power boat is provided with a hydraulic propeller;
a diesel engine is arranged in the power boat, one end of the diesel engine is connected with the first hydraulic pump through a clutch, and the other end of the diesel engine is connected with the second hydraulic pump through a belt;
the power boat is characterized in that self-priming water injection pumps are arranged on two sides of the interior of the power boat, each self-priming water injection pump is externally connected with a hydraulic motor, and fresh water tanks are arranged on two sides of the interior of the power boat, and in the technical scheme, the self-priming water injection pumps are arranged on two sides of the interior of the power boat: the diesel engine and the clutch are externally connected to a 24V direct current power supply; the self-priming water injection pump is externally connected to the second hydraulic pump; the hydraulic propeller is externally connected with the first hydraulic pump; the fuel tank and the hydraulic oil tank are externally connected to a 24V direct current power supply.
In the technical scheme, the method comprises the following steps: the suction height of the self-suction water injection pump is more than 8 meters.
In the technical scheme, the method comprises the following steps: the length of the power boat is 7.9 meters, the width of the power boat is 3.4 meters, and the height of the power boat is 1.5 meters.
The second object of the present invention is to overcome the above-mentioned drawbacks of the prior art, and to provide a method for pumping and injecting water for a power boat in a channel cofferdam area.
The second object of the present invention is achieved by the following technical scheme: a method for pumping and injecting water for a power boat in a channel cofferdam area comprises the following steps of;
(1) starting the diesel engine, and driving the first hydraulic pump to provide power for the hydraulic propeller so as to ensure the navigation of the power boat; the second hydraulic pump is driven to provide power for the self-suction water injection pump and is used for the power boat to pump water to the cofferdam box body arranged at one side or pump water to the cofferdam area
(2) Water injection operation of the cofferdam box body: the valve V1-1, the valve V2-1, the valve V3-1, the valve V4-1, the valve V7-1, the valve V8-1 and the valve V9-1 are opened, the quick connector arranged at the end part is connected with a suction port pipe of a cofferdam box body positioned at one side, the self-suction and water injection pump P1 is started, water can be injected into the two cofferdam box bodies arranged at one side at the same time, and the water injection speed can be controlled by adjusting the valve opening of the valve V8-1 and the valve V9-1, so that the floating state requirements of the operation of all cofferdam equipment are ensured;
(3) pumping water from a cofferdam box body: opening the valve V4-1, the valve V5-1, the valve V6-1, the valve V8-1 and the valve V9-1; the quick connector arranged at the end part is connected with the suction port pipe of the cofferdam box body arranged at one side, and the self-suction water injection pump P1 is started, so that the two cofferdam box bodies arranged at one side can be pumped at the same time, the pumping speed can be controlled by adjusting the opening of the valve V8-1 and the valve V9-1, and the floating state requirement of the whole cofferdam equipment operation is ensured;
(4) pumping water in a cofferdam area: opening the valve V4-1, the valve V5-1, the valve V6-1, the valve V8-1 and the valve V9-1; the self-priming pumping and water injection pump P1 is started to pump water in the cofferdam area by connecting a quick connector arranged at the end part with a suction port pipe arranged on the cofferdam area;
(5) starting the diesel engine, and driving the first hydraulic pump to provide power for the hydraulic propeller so as to ensure the navigation of the power boat; driving a second hydraulic pump to provide power for a self-suction water injection pump and being used for pumping water to a cofferdam box body arranged at one side or pumping water to a cofferdam area by the power boat;
(6) water injection operation of the cofferdam box body: the valve V1-2, the valve V2-2, the valve V3-2, the valve V4-2, the valve V7-2, the valve V8-2 and the valve V9-2 are opened and connected with a suction port pipe of a cofferdam box body positioned at one side through a quick connector arranged at the end part, and the self-suction and water injection pump P2 is started, so that water can be injected into the two cofferdam box bodies arranged at one side at the same time, the water injection speed can be controlled by adjusting the valve opening of the valve V8-2 and the valve V9-2, and the floating state requirements of the operation of all cofferdam equipment are ensured;
(7) pumping water from a cofferdam box body: opening the valve V4-2, the valve V5-2, the valve V6-2, the valve V8-2 and the valve V9-2; the quick connector arranged at the end part is connected with the suction port pipe of the cofferdam box body arranged at one side, and the self-suction water injection pump P2 is started, so that the two cofferdam box bodies arranged at one side can be pumped at the same time, the pumping speed can be controlled by adjusting the opening of the valve V8-2 and the valve V9-2, and the floating state requirement of the whole cofferdam equipment operation is ensured;
(8) pumping water in a cofferdam area: opening the valve V4-2, the valve V5-2, the valve V6-2, the valve V8-2 and the valve V9-2; and the self-priming pumping and water injection pump P2 is started by connecting the quick connector arranged at the end part with the suction port pipe arranged on the cofferdam area, so that water can be pumped in the cofferdam area.
In the technical scheme, the method comprises the following steps: the self-priming pump P1 and the self-priming pump P2 can work simultaneously, and water is injected into 4 external cofferdam boxes at the maximum.
In the technical scheme, the method comprises the following steps: the self-suction water injection pump P1 and the self-suction water injection pump P2 suck more than 8 meters in the cofferdam area.
In the technical scheme, the method comprises the following steps: the valve V6-1 is opened only when the water is pumped from the box body of the cofferdam box and the water is pumped from the cofferdam area under the following two working conditions;
a kind of is: the valve V6-1 is arranged below the water surface line of the inner wall of the side of the power boat, and the valve V6-1 needs to be opened when water is directly discharged to the ditch after being opened;
the other is: the valve V6-1 is constructed in the steps (3) and (4) and is only required to be opened; the water flow direction in steps (3) and (4) is as follows: water flow sequence: cofferdam area, suction pipe, quick connector, valve V8-1, valve V5-1, self-sucking pump, water injection pump P1, valve V4-1, valve V6-1, and draining to ditch;
the valve V6-1 is constructed in the steps (7) and (8) and is only required to be opened; the water flow direction in steps (7) and (8) is as follows:
water flow sequence: the box body of the weir box, the suction port pipe, the quick connector, the valve V8-1, the valve V5-1, the self-suction pump, the water injection pump P1, the valve V4-1, the valve V6-1 and the discharge to the ditch.
In the technical scheme, the method comprises the following steps: the valve V8-1, the valve V9-1, the valve V8-2 and the valve V9-2 are connected with a suction port pipe in the cofferdam area through quick connectors and connecting pipes.
In the technical scheme, the method comprises the following steps: the fresh water tank is connected with the inner wall of the power boat, water in the channel directly enters the fresh water tank through the power boat, and the fresh water tank is directly filled with water for the weir box body through the self-suction water injection pump P1 and the self-suction water injection pump P2.
The invention has the following advantages: 1. the design of the power boat is different from the conventional power boat design in the aspects of material selection, paint, host cooling water discharge and the like, and the environment protection is required to be fully considered, so that the self-priming pump and the water injection pump are selected to reach the food pump level. The power boat is used for assisting cofferdam equipment operation, and does not cause any pollution to drinking water in a ditch. 2. The self-suction type pumping and water injection pump pumping of the power boat is up to more than 8 meters, the working condition of the cofferdam equipment for 8 meters of water depth is met, the pumping time of the submersible pump is reduced, the working efficiency of the cofferdam equipment is increased, and the construction cost is indirectly saved. 3. The power boat adopts a hydraulic propulsion mode, has a small volume, light weight and compact structure under the same power condition, and can be frequently started and commutated; b. stepless speed regulation is carried out, and the output rotating speed range is large; c. the operation is simple, and the automatic control is convenient to realize by combining with an electrical control system. 4. The power boat has good power maneuvering performance, can well assist cofferdam equipment to perform more accurate water installation and underwater positioning, and solves the problems that the water installation and positioning of the cofferdam equipment are time-consuming and labor-consuming, the installation difficulty is high and the like.
Drawings
FIG. 1 is a schematic diagram of a suction and drainage system of a power boat according to the present invention.
Fig. 2 is a schematic view of the cofferdam region and cofferdam box structure in the present invention.
Fig. 3 is a front view of the power boat of the present invention.
Fig. 4 is a schematic diagram of the power system equipment arrangement of the power boat in the invention.
In the figure: the diesel engine 1, the clutch 2, the first hydraulic pump 3, the second hydraulic pump 4, the fuel tank 5, the hydraulic tank 6, the self-priming pump 7, the hydraulic motor 8, the hydraulic propeller 9, the power boat 10, the quick connector 11, the self-priming pump, the water injection pump P112, the self-priming pump, the water injection pump P213, the weir box 14, the cofferdam area 15, the fresh water tank 16, the valve V1-11.1, the valve V2-11.2, the valve V3-11.3, the valve V4-11.4, the valve V5-11.5, the valve V6-11.6, the valve V7-11.7, the valve V8-11.8, the valve V9-11.9,
Valve V1-22.1, valve V2-22.2, valve V3-22.3, valve V4-22.4, valve V5-22.5, valve V6-22.6, valve V7-22.7, valve V8-22.8, valve V9-22.9.
Detailed Description
The following detailed description of the invention, taken in conjunction with the accompanying drawings, is not intended to limit the invention, but is made merely by way of example; while the advantages of the invention will become apparent and readily appreciated by reference to the following description.
Referring to fig. 1-4: a power boat for a channel cofferdam area, wherein a diesel engine 1, a clutch 2, a first hydraulic pump 3, a second hydraulic pump 4, a fuel tank 5, a hydraulic oil tank 6, a self-priming pump 7 and a hydraulic motor 8 are arranged in a power boat 10; the tail part of the deck of the power boat 10 is provided with a hydraulic propeller 9;
a diesel engine 1 is arranged in the power boat 10, one end of the diesel engine 1 is connected with a first hydraulic pump 3 through a clutch 2, and the other end is connected with a second hydraulic pump 4 through a belt;
the two sides of the interior of the power boat 10 are respectively provided with a self-priming pump 7, and each self-priming pump 7 is externally connected with a hydraulic motor 8; the power boat 10 is provided with fresh water tanks 16 on both sides inside.
The diesel engine 1 and the clutch 2 are externally connected to a 24V direct current power supply; the self-priming water injection pump 7 is externally connected to the second hydraulic pump 4; the hydraulic propeller 9 is externally connected with the first hydraulic pump 3; the fuel tank 5 and the hydraulic oil tank 6 are externally connected to a 24V direct current power supply. The external power supply or the hydraulic pump can avoid electric shock hazard possibly generated during personnel operation and equipment maintenance.
The suction height of the self-suction water injection pump 7 is more than 8 meters. The self-priming height of the common self-priming pump is only 4-5 meters, and the self-priming time is long, so that the operation requirements of people cannot be met. The height of the cofferdam area of the channel is between 6 meters and 7 meters, and pumps with the height of more than 8 meters are needed to be selected for pumping water in the cofferdam area to ensure the working environment of the cofferdam area.
The length of the power boat 10 is 7.9 meters, the width is 3.4 meters, and the height is 1.5 meters. The design of the external dimension of the power boat is limited by the working environment, the transportation condition, the function and the like. The length is mainly limited by the working environment, the canal and shore transportation is difficult in certain specific projects if the length is too long, the width is limited by the transportation condition, the kilometer railway transportation cannot be ultra-wide, the height is mainly limited by the stability, the towing force, the maneuverability and the like of the boat required by the functions, and the above-mentioned dimensions are set to be the length and the width specially designed in certain specific projects.
The invention also comprises a pumping and water injecting method in the power boat: a method for pumping and injecting water for a power boat in a channel cofferdam area comprises the following steps of;
(1) starting the diesel engine 1, driving the first hydraulic pump 3 to provide power for the hydraulic propeller 9, and ensuring the sailing of the power boat 10; the second hydraulic pump 4 is driven to power the self-priming water pump 7 and is used for pumping water from a cofferdam box body 14 or a cofferdam area 15 arranged at one side by the power boat 10
(2) Water injection operation of the cofferdam box body: the valve V1-11.1, the valve V2-11.2, the valve V3-11.3, the valve V4-11.4, the valve V7-11.7, the valve V8-11.8 and the valve V9-11.9 are opened, the quick connector 11 arranged at the end part is connected with the suction port pipe of the cofferdam box body 14 positioned at one side, and the self-suction water injection pump P112 is started, so that water can be injected into the cofferdam box bodies 14 arranged at two sides at the same time, the water injection speed can be controlled by adjusting the valve opening of the valve V8-11.8 and the valve V9-11.9, and the floating state requirements of the operation of all cofferdam equipment are ensured;
(3) pumping water from a cofferdam box body: opening the valve V4-11.4, the valve V5-11.5, the valve V6-11.6, the valve V8-11.8 and the valve V9-11.9; the quick connector 11 arranged at the end part is connected with the suction port pipe of the cofferdam box body 14 arranged at one side, and the self-suction water injection pump P112 is started, so that the two cofferdam box bodies 14 arranged at one side can be pumped at the same time, and the pumping speed can be controlled by adjusting the opening of the valves V8-11.8 and V9-11.9, so that the floating state requirement of the whole cofferdam equipment operation is ensured;
(4) pumping water in a cofferdam area: opening the valve V4-11.4, the valve V5-11.5, the valve V6-11.6, the valve V8-11.8 and the valve V9-11.9; the quick connector 11 arranged at the end part is connected with a suction port pipe arranged on the cofferdam area 15, and the self-suction water injection pump P112 is started to pump water in the cofferdam area 15; this step reduces the pumping time, i.e., reduces the preparation time for construction of cofferdam region 15.
(5) Starting the diesel engine 1, driving the first hydraulic pump 3 to provide power for the hydraulic propeller 9, and ensuring the sailing of the power boat 10; the second hydraulic pump 4 is driven to provide power for the self-priming water injection pump 7 and is used for pumping water to a cofferdam box body 14 arranged on one side or pumping water to a cofferdam area 15 by the power boat 10;
(6) water injection operation of the cofferdam box body: the valve V1-22.1, the valve V2-22.2, the valve V3-22.3, the valve V4-22.4, the valve V7-22.7, the valve V8-22.8 and the valve V9-22.9 are opened and connected with a suction port pipe of the cofferdam box body 14 positioned at one side through a quick connector 11 arranged at the end part, and the self-suction water injection pump P213 is started, so that water can be injected into the cofferdam box bodies 14 arranged at two sides at the same time, the water injection speed can be controlled by adjusting the valve opening of the valve V8-22.8 and the valve V9-22.9, and the floating state requirements of the operation of all cofferdam equipment are ensured;
(7) pumping water from a cofferdam box body: opening the valve V4-22.4, the valve V5-22.5, the valve V6-22.6, the valve V8-22.8 and the valve V9-22.9; the quick connector 11 arranged at the end part is connected with the suction port pipe of the cofferdam box body 14 arranged at one side, and the self-suction water injection pump P213 is started, so that the two cofferdam box bodies 14 arranged at one side can be pumped at the same time, and the pumping speed can be controlled by adjusting the opening of the valves V8-22.8 and V9-22.9, so that the floating state requirement of the whole cofferdam equipment operation is ensured;
(8) pumping water in a cofferdam area: opening the valve V4-22.4, the valve V5-22.5, the valve V6-22.6, the valve V8-22.8 and the valve V9-22.9; and the quick connector 11 arranged at the end part is connected with a suction port pipe arranged on the cofferdam area 15, and the self-suction water injection pump P213 is started to pump water in the cofferdam area 15.
The self-suction water injection pump P112 and the self-suction water injection pump P213 can work simultaneously, and water is injected into the 4 external cofferdam boxes 14 at the maximum. The design has the biggest characteristics that a single pump can pump and inject water for two cofferdam box bodies 14 simultaneously, and 2 pumps can pump and inject water for 4 cofferdam box bodies 14 simultaneously, and the floating state of the single cofferdam box is controlled by adjusting the pumping and injecting water of the cofferdam box, so that the floating state of the whole cofferdam box assembly in water is controlled, and cofferdam operation is realized.
The self-suction water injection pump P112 and the self-suction water injection pump P213 suck more than 8 meters into the cofferdam area 15. The self-suction water injection pump P112 and the self-suction water injection pump P213 can operate simultaneously, ensure that water in the cofferdam area is basically pumped out, and reduce the preparation time for construction of the cofferdam area.
The valves V6-11.6 are opened only when the water is pumped in the cofferdam box body 14 and the water is pumped in the cofferdam area 15 under the following two working conditions;
a kind of is: the valve V6-11.6 is arranged below the water surface line of the inner side wall of the gunwale of the power boat 10, and the valve V6-11.6 needs to be opened when water is directly discharged to the ditch after being opened;
the other is: the valve V6-11.6 is constructed in the steps (3) and (4) and is only required to be opened; the water flow direction in steps (3) and (4) is as follows: water flow sequence: the cofferdam area 15, the suction pipe, the quick connector 11, the valve V8-11.8, the valve V5-11.5, the self-priming pump P112, the valve V4-11.4, the valve V6-11.6 and the water injection pump P112 are discharged to the ditch;
the valve V6-11.6 is constructed in the steps (7) and (8) and is only required to be opened; the water flow direction in steps (7) and (8) is as follows:
water flow sequence: the surrounding weir box body 14, the suction port pipe, the quick connector 11, the valve V8-11.8, the valve V5-11.5, the self-suction pump and water injection pump P112, the valve V4-11.4, the valve V6-11.6 and the discharge to the ditch.
The valves V8-11.8, V9-11.9, V8-22.8 and V9-22.9 are all connected with the suction port pipe in the cofferdam area 15 through the quick connector 11 and the connecting pipe 11.1.
The fresh water tank 16 is connected with the inner wall of the power boat 10, water in the channel directly enters the fresh water tank 16 through the power boat 10, and the fresh water tank 16 is directly filled with water for the weir box body 14 through the self-suction water injection pump P112 and the self-suction water injection pump P213.
The fresh water tank 16 is used as a part of the hull structure of the power boat 10, is symmetrically arranged at a position below a design waterline of the inner wall of the power boat, has the same water tightness with the inner wall of the hull, is provided with holes on one surface of the inner wall of the hull, is provided with a grid, ensures that water in the water channel can be filled with the fresh water tank 16 after the power boat 10 enters the water channel, and is convenient for the fresh water tank 16 to directly inject water into the weir box 14 through the connected suction pump and water injection pump P112 and the self suction pump and water injection pump P213.
The parts not described in detail above are all prior art.

Claims (8)

1. A method for pumping and injecting water for a power boat in a channel cofferdam area is characterized in that: a diesel engine (1), a clutch (2), a first hydraulic pump (3), a second hydraulic pump (4), a fuel tank (5), a hydraulic oil tank (6), a self-priming pump (7) and a hydraulic motor (8) are arranged in the power boat (10); a hydraulic propeller (9) is arranged at the tail part of a deck of the power boat (10);
a diesel engine (1) is arranged in the power boat (10), one end of the diesel engine (1) is connected with a first hydraulic pump (3) through a clutch (2), and the other end of the diesel engine is connected with a second hydraulic pump (4) through a belt;
the self-priming water injection pump (7) is arranged on two sides of the interior of the power boat (10), each self-priming water injection pump (7) is externally connected with a hydraulic motor (8), and fresh water tanks (16) are arranged on two sides of the interior of the power boat (10); it comprises the following steps of;
(1) starting the diesel engine (1), driving the first hydraulic pump (3) to provide power for the hydraulic propeller (9), and ensuring the sailing of the power boat (10); the second hydraulic pump (4) is driven to provide power for the self-suction water injection pump (7) and is used for the power boat (10) to pump water into the cofferdam box body (14) arranged at one side or pump water into the cofferdam area (15)
(2) Water injection operation of the cofferdam box body: the method comprises the steps of opening a valve V1-1 (1.1), a valve V2-1 (1.2), a valve V3-1 (1.3), a valve V4-1 (1.4), a valve V7-1 (1.7), a valve V8-1 (1.8) and a valve V9-1 (1.9), connecting a quick connector (11) arranged at the end part with a suction port pipe of a cofferdam box body (14) positioned at one side, starting a self-priming pump and a water injection pump P1 (12), and injecting water to the two surrounding weir box bodies (14) arranged at one side at the same time, wherein the water injection speed can be controlled by adjusting the opening of the valves V8-1 (1.8) and the valve V9-1 (1.9), so that the floating state requirements of the operation of all cofferdam equipment are ensured;
(3) pumping water from a cofferdam box body: opening the valve V4-1 (1.4), the valve V5-1 (1.5), the valve V6-1 (1.6), the valve V8-1 (1.8) and the valve V9-1 (1.9); the quick connector (11) arranged at the end part is connected with the suction port pipe of the cofferdam box body (14) arranged at one side, and the self-suction water injection pump P1 (12) is started, so that the two cofferdam box bodies (14) arranged at one side can be pumped at the same time, and the pumping speed can be controlled by adjusting the opening of the valves V8-1 (1.8) and V9-1 (1.9), so that the floating state requirement of the whole cofferdam equipment operation is ensured;
(4) pumping water in a cofferdam area: opening the valve V4-1 (1.4), the valve V5-1 (1.5), the valve V6-1 (1.6), the valve V8-1 (1.8) and the valve V9-1 (1.9); the self-priming pumping and water injection pump P1 (12) is started to pump water in the cofferdam area (15) through the quick connector (11) arranged at the end part and connected with a suction port pipe arranged on the cofferdam area (15);
(5) starting the diesel engine (1), driving the first hydraulic pump (3) to provide power for the hydraulic propeller (9), and ensuring the sailing of the power boat (10); the second hydraulic pump (4) is driven to provide power for the self-suction water injection pump (7) and is used for pumping water to a cofferdam box body (14) arranged at one side or pumping water to a cofferdam area (15) by the power boat (10);
(6) water injection operation of the cofferdam box body: opening a valve V1-2 (2.1), a valve V2-2 (2.2), a valve V3-2 (2.3), a valve V4-2 (2.4), a valve V7-2 (2.7), a valve V8-2 (2.8) and a valve V9-2 (2.9) and connecting the valve V1-2 (2.2) with a suction port pipe of a cofferdam box body (14) positioned at one side through a quick connector (11) arranged at the end part, starting a self-priming pump and a water injection pump P2 (13), and simultaneously injecting water into the surrounding weir box bodies (14) arranged at two sides, wherein the water injection speed can be controlled by adjusting the opening of the valve V8-2 (2.8) and the valve V9-2 (2.9), so as to ensure the floating state requirements of the operation of all cofferdam equipment;
(7) pumping water from a cofferdam box body: opening the valve V4-2 (2.4), the valve V5-2 (2.5), the valve V6-2 (2.6), the valve V8-2 (2.8) and the valve V9-2 (2.9); the quick connector (11) arranged at the end part is connected with the suction port pipe of the cofferdam box body (14) arranged at one side, and the self-suction water injection pump P2 (13) is started, so that the two cofferdam box bodies (14) arranged at one side can be pumped at the same time, and the pumping speed can be controlled by adjusting the opening of the valves V8-2 (2.8) and V9-2 (2.9), so that the floating state requirement of the whole cofferdam equipment operation is ensured;
(8) pumping water in a cofferdam area: opening the valve V4-2 (2.4), the valve V5-2 (2.5), the valve V6-2 (2.6), the valve V8-2 (2.8) and the valve V9-2 (2.9); the self-priming pumping and water injection pump P2 (13) is started to pump water in the cofferdam area (15) through the quick connector (11) arranged at the end part and connected with a suction port pipe arranged on the cofferdam area (15); the valve V6-1 (1.6) is opened only when the water is pumped in the cofferdam box body (14) and the water is pumped in the cofferdam area (15) under the following two working conditions;
a kind of is: the valve V6-1 (1.6) is arranged below the water surface line of the inner wall of the side of the power boat (10), and the valve V6-1 (1.6) needs to be opened when water is directly discharged to the ditch after being opened;
the other is: the valve V6-1 (1.6) is constructed in the steps (3) and (4) and is only required to be opened; the water flow direction in steps (3) and (4) is as follows: water flow sequence: the cofferdam area (15) -the suction pipe-the quick connector (11) -the valve V8-1 (1.8) -the valve V5-1 (1.5) -the self-sucking and water injection pump P1 (12) -the valve V4-1 (1.4) -the valve V6-1 (1.6) -are discharged to the ditch;
the valve V6-1 (1.6) is constructed in the steps (7) and (8) and is only required to be opened; the water flow direction in steps (7) and (8) is as follows:
water flow sequence: the surrounding weir box body (14), the suction port pipe, the quick connector (11), the valve V8-1 (1.8), the valve V5-1 (1.5), the self-sucking pumping and water injection pump P1 (12), the valve V4-1 (1.4), the valve V6-1 (1.6) are discharged to the ditch.
2. The method for pumping and injecting water for a power boat in a channel cofferdam area according to claim 1, wherein: the diesel engine (1) and the clutch (2) are externally connected to a 24V direct current power supply; the self-priming water injection pump (7) is externally connected to the second hydraulic pump (4); the hydraulic propeller (9) is externally connected with the first hydraulic pump (3); the fuel tank (5) and the hydraulic oil tank (6) are externally connected to a 24V direct current power supply.
3. A method for pumping and injecting water for a power boat in a channel cofferdam area according to claim 1 or 2, characterized in that: the suction height of the self-suction water injection pump (7) is more than 8 meters.
4. A method of pumping and flooding a power boat for a channel cofferdam area as claimed in claim 3, wherein: the length of the power boat (10) is 7.9 meters, the width is 3.4 meters, and the height is 1.5 meters.
5. The method for pumping and injecting water for a power boat in a channel cofferdam area according to claim 4, wherein: the self-suction water injection pump P1 (12) and the self-suction water injection pump P2 (13) can work simultaneously, and water is injected into the maximum 4 external weir box bodies (14) at the same time.
6. The method for pumping and injecting water for a power boat in a channel cofferdam area according to claim 5, wherein: the self-priming pump P1 (12) and the self-priming pump P2 (13) suck more than 8 meters into the cofferdam area (15).
7. The method for pumping and injecting water for a power boat in a channel cofferdam area of claim 6, wherein: the valve V8-1 (1.8), the valve V9-1 (1.9), the valve V8-2 (2.8) and the valve V9-2 (2.9) are connected with a suction port pipe in the cofferdam area (15) through a quick connector (11) and a connecting pipe (11.1).
8. The method for pumping and injecting water for a power boat in a channel cofferdam area as claimed in claim 7, wherein: the fresh water tank (16) is connected with the inner wall of the power boat (10), water in a channel directly enters the fresh water tank (16) through the power boat (10), and the fresh water tank (16) directly injects water into the cofferdam box body (14) through the self-suction water injection pump P1 (12) and the self-suction water injection pump P2 (13).
CN201910739352.1A 2019-08-12 2019-08-12 Extraction and water injection method for power boat in channel cofferdam area Active CN110562399B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4175510A (en) * 1977-10-25 1979-11-27 Devine Thomas H Cofferdam
JPH08128081A (en) * 1994-10-31 1996-05-21 Kubota Corp Pumping method and pumping-dewatering method
SE527511C2 (en) * 2004-04-02 2006-03-28 Aquavilla Ab Float construction in concrete for a floating dwelling prepared for a collector hose for a heat pump
CN102061706B (en) * 2010-12-09 2013-06-05 江苏省水利机械制造有限公司 Assembly steel box cofferdam and construction method thereof
CN103726501B (en) * 2014-01-02 2015-08-12 中铁大桥局集团有限公司 Construction method is transferred in a kind of large-scale cofferdam
CN103938638A (en) * 2014-03-27 2014-07-23 湖南顺天建设集团有限公司 Buoy type deepwater single-wall steel cofferdam construction method
CN211001734U (en) * 2019-08-12 2020-07-14 长江勘测规划设计研究有限责任公司 Power boat for channel cofferdam area

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