Negative pressure machine for mounting negative pressure cylinder and mounting method

Abstract

The invention discloses a negative pressure machine for mounting a negative pressure cylinder and a mounting method.The negative pressure machine supporting structure is a frame, a signal and hydraulic control system is arranged in the frame, the signal control system is composed of a watertight wiring bin, an electronic bin and a watertight camera bin, and the hydraulic control system is composed of a hydraulic oil bin and a hydraulic valve bin; a main connector lug of the watertight wiring bin is connected with a construction platform control center through an umbilical cable, and an auxiliary connector lug of the watertight wiring bin is connected with the first desilting pump and the second desilting pump. The desilting pump integrating the two large-flow water pump motors is directly driven by electric energy, the energy conversion rate is high, and the construction efficiency can be improved through simultaneous operation of the two main pumps; a hydraulic system of the negative pressure machine only needs to control a valve and a hydraulic clamping jaw, so that the requirement on a hydraulic pump is greatly reduced; the pipeline route is optimized, the fluid flow loss is reduced, the caliber of the pipeline is increased, the water flow pumping and filling time is greatly shortened, and the construction efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of construction of negative pressure cylinder foundations for offshore projects, and in particular to a negative pressure machine for installing a negative pressure cylinder and an installation method thereof. Background Art

[0002] At present, the foundation structures in marine engineering are mainly divided into pile structures, jacket structures, suction tube structures and gravity structures. Among them, the jacket structure and suction tube structure are more simplified and convenient to apply. The existing technology mainly uses suction equipment for foundation installation, but the existing technology has low working efficiency and small application scope. There are three main problems exposed by the existing technology: 1. The pipeline structure is simplified, the flow loss rate is large, and the suction efficiency is low; 2. The sealing and pressure resistance of structural components are poor and cannot adapt to the complex offshore construction environment; 3. It is impossible to achieve sustainable remote control and does not have the conditions for deep-water operations.

[0003] In order to solve the above problems, we propose a negative pressure machine and installation method for installing a negative pressure cylinder. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a negative pressure machine and an installation method for installing a negative pressure cylinder, which improves the suction efficiency of the negative pressure machine equipment, enhances its use stability, and expands its application range.

[0005] To achieve the above object, the present invention provides the following technical solutions: A negative pressure machine for installing a negative pressure cylinder comprises a frame, an electronic compartment, a hydraulic oil compartment, a watertight wiring compartment, a hydraulic valve compartment, a hydraulic pump, a hydraulic pump pressure compensator, and a watertight camera compartment. A flange docking with the negative pressure cylinder is arranged at the bottom of the frame; a signal control system and a hydraulic control system are arranged inside the frame, the signal control system is composed of the watertight wiring compartment, the electronic compartment, and the watertight camera compartment, the hydraulic control system is composed of the hydraulic oil compartment and the hydraulic valve compartment, the main wiring head of the watertight wiring compartment is connected to the construction platform control center through an umbilical cable, the auxiliary wiring head of the watertight wiring compartment is connected to the first dredging pump and the second dredging pump, and the watertight wiring compartment is connected to the electronic compartment through a power supply line, a signal line, and a network cable. The first dredging pump comprises a first water inlet and a first water outlet, and the second dredging pump comprises a second water inlet and a second water outlet. The first water inlet is connected to one end of a No. 1 hydraulic two-way ball valve and a No. 2 hydraulic two-way ball valve through a flange three-way pipeline, and the second water inlet is connected to one end of a No. 6 hydraulic two-way ball valve and a No. 7 hydraulic two-way ball valve through a flange three-way pipeline. The other end of the No. 1 hydraulic two-way ball valve is connected to the bottom platform ball valve through a flange pipeline. The first water outlet is connected to the bottom platform ball valve through a flange The three-way pipeline is connected to one end of the No. 3 hydraulic two-way ball valve and the No. 4 hydraulic two-way ball valve, the No. 4 hydraulic two-way ball valve is connected to one end of the No. 5 hydraulic two-way ball valve through a flange pipeline, the other end of the No. 5 hydraulic two-way ball valve is connected to the bottom platform ball valve through a flange pipeline, the second water outlet is connected to one end of the No. 9 hydraulic two-way ball valve and the No. 10 hydraulic two-way ball valve through a flange three-way pipeline, the other end of the No. 10 hydraulic two-way ball valve is connected to the bottom platform ball valve through a flange pipeline. The oil suction port of the hydraulic pump is connected to the hydraulic oil tank through an oil pipe, the oil outlet of the hydraulic pump is connected to the overflow valve, high-pressure gauge, high-pressure filter and one-way valve through an oil pipe, the branch of the one-way valve is connected to the accumulator and the pressure joint of the electronic warehouse, and the main line of the one-way valve is connected to the two groups of hydraulic valve tanks through an oil pipe.

[0006] As a preferred technical solution of the present invention, the frame is a steel structure frame used for mounting and supporting the internal structure of the negative pressure machine.

[0007] As a preferred technical solution of the present invention, the watertight wiring compartment adopts wet sealing.

[0008] As a preferred technical solution of the present invention, the electronic compartment adopts dry sealing.

[0009] As a preferred technical solution of the present invention, the hydraulic valve chamber adopts wet sealing.

[0010] As a preferred technical solution of the present invention, the hydraulic oil tank is a fully enclosed oil storage device, an exhaust flange is installed on the upper end of the hydraulic oil tank, and the hydraulic oil tank is connected to the hydraulic pump pressure compensator through an interface.

[0011] As a preferred technical solution of the present invention, a pressure-resistant and watertight camera is installed in the frame for monitoring the status of the first water inlet, the second water inlet, the first water outlet, the second water outlet, the positioning pile legs and the locking claws.

[0012] As a preferred technical solution of the present invention, the hydraulic valve tank is composed of eight groups of solenoid valves, a valve block and an external corrosion-resistant stainless steel shell. Each group of solenoid valves is connected to the ball valve switch and the claw cylinder through an oil inlet pipe and an oil return pipe. The oil return port of the valve block is connected to the oil return port of the hydraulic oil tank through a low-pressure filter and an oil pipe.

[0013] As a preferred technical solution of the present invention, there are two groups of claw cylinders, which are connected to a group of solenoid valves through oil inlet pipes and oil return pipes, and the claw cylinders are respectively connected to locking claws.

[0014] The method for installing a negative pressure machine for installing a negative pressure cylinder of the present invention comprises the following steps: 1) Hoist the negative pressure machine above the negative pressure cylinder structure, connect the flange at the bottom of the negative pressure machine with the negative pressure cylinder pipeline collection flange, and clamp the negative pressure cylinder pipeline platform with the locking claws; 2) Start the first dredging pump and the second dredging pump, close the No. 2 hydraulic two-way ball valve and the No. 7 hydraulic two-way ball valve, open all the other hydraulic two-way ball valves, sink the negative pressure cylinder, and use the negative pressure machine to suck water into the negative pressure cylinder and discharge it into the sea. During the sinking of the negative pressure cylinder, if the inclinometer in the electronic warehouse tilts and needs to be leveled, close the bottom platform ball valve as appropriate. If there is a serious deflection, close the No. 1 hydraulic two-way ball valve and the No. 6 hydraulic two-way ball valve, open the No. 2 hydraulic two-way ball valve and the No. 7 hydraulic two-way ball valve, and lift the negative pressure cylinder; 3) After the negative pressure cylinder is sunk into place, release the locking claws and hoist the negative pressure machine for recovery.

[0015] Compared with the prior art, the present invention can achieve the following beneficial effects: 1. By using two large-flow water pump motor integrated dredging pumps, which are directly driven by electric energy, the energy conversion rate is high. The two main pumps can run at the same time to improve the construction efficiency, and the two main pumps can improve the construction reliability by using one for use and one for backup; 2. The hydraulic system of the vacuum machine only needs to control the valve and hydraulic claws, which greatly reduces the requirements for the hydraulic pump; 3. By optimizing pipeline routing, reducing fluid flow loss, and increasing pipeline diameter, the pumping and filling time can be greatly shortened, thus greatly improving construction efficiency; 4. By adopting dry electronic warehouse, underwater hydraulic pump station and equipped with watertight connectors, the durability in deep water and the stability of remote control are guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Throughout the accompanying drawings, the same reference numerals are used to represent the same components. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of a negative pressure machine according to a preferred embodiment of the present invention; Figure 2This is an axonometric view of the internal structure of the negative pressure machine of the preferred embodiment of the present invention; Figure 3 1. It is a top view of the internal structure of the negative pressure machine of the preferred embodiment of the present invention; Figure 4 It is a left view of the internal structure of the negative pressure machine of the preferred embodiment of the present invention.

[0017] in, Figure 1-4 The corresponding relationship between the reference numerals and the components is as follows: 1. Frame; 2. First desilting pump; 3. Electronic compartment; 4. Hydraulic oil compartment; 5. Watertight wiring compartment; 6. Hydraulic valve compartment; 7. Hydraulic pump; 8. Hydraulic pump pressure compensator; 9. Watertight camera compartment; 10. Pressure-resistant watertight camera; 11. Flange; 12. Second desilting pump; 13. First water inlet; 14. Locking claw; 15. Second clean water inlet; 16. First water outlet; 17. Second water outlet; 18. No. 1 hydraulic two-way ball valve; 19. No. 4 hydraulic two-way ball valve; 20. No. 5 hydraulic two-way ball valve; 21. No. 9 hydraulic two-way ball valve; 22. No. 6 hydraulic two-way ball valve; 23. No. 2 hydraulic two-way ball valve; 24. No. 3 hydraulic two-way ball valve; 25. No. 7 hydraulic two-way ball valve; 26. No. 10 hydraulic two-way ball valve. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0019] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0020] Combine the following Figure 1-4 A negative pressure machine for installing a negative pressure cylinder and an installation method according to an embodiment of the present invention are specifically described.

[0021] like Figure 1-4 As shown, a negative pressure machine for installing a negative pressure cylinder includes a frame 1, an electronic compartment 3, a hydraulic oil compartment 4, a watertight wiring compartment 5, a hydraulic valve compartment 6, a hydraulic pump 7, a hydraulic pump pressure compensator 8, and a watertight camera compartment 9; The frame 1 is a steel structure frame used for supporting the internal structure of the negative pressure machine. A pressure-resistant and watertight camera 10 is installed in the frame 1 to monitor the status of the first water inlet 13, the second water inlet 15, the first water outlet 16, the second water outlet 17, the positioning pile legs and the locking claws 14. The dynamics of each construction node can be monitored in real time so as to adjust the instrument status at any time and improve the construction efficiency. A flange 11 is provided at the bottom of the frame 1 to connect with the negative pressure cylinder, so as to facilitate fixing with the negative pressure cylinder. A signal control system and a hydraulic control system are arranged inside the frame 1. The signal control system is composed of a watertight wiring compartment 5 with wet sealing, an electronic compartment 3 with dry sealing, and a watertight camera compartment 9. The hydraulic control system is composed of a hydraulic oil compartment 4 and a hydraulic valve compartment 6 with wet sealing. The main wiring head of the watertight wiring compartment 5 is connected to the construction platform control center through an umbilical cable, and the auxiliary wiring head of the watertight wiring compartment 5 is connected to the first dredging pump 2 and the second dredging pump 12. The watertight wiring compartment 5 is connected to the electronic compartment 3 through power supply lines, signal lines and network cables. The first dredging pump 2 includes a first water inlet 13 and a first water outlet 16, and the second dredging pump 12 includes a second water inlet 15 and a second water outlet 17. The first water inlet 13 is connected to one end of a No. 1 hydraulic two-way ball valve 18 and a No. 2 hydraulic two-way ball valve 23 through a flange three-way pipeline, and the second water inlet 15 is connected to one end of a No. 6 hydraulic two-way ball valve 22 and a No. 7 hydraulic two-way ball valve 25 through a flange three-way pipeline. The other end of the No. 1 hydraulic two-way ball valve 18 is connected to the bottom platform ball valve through a flange pipeline. The first water outlet 16 is connected to the bottom platform ball valve through a flange pipeline. The third hydraulic two-way ball valve 24 and one end of the fourth hydraulic two-way ball valve 19 are connected through a flange three-way pipeline, the fourth hydraulic two-way ball valve 19 is connected to one end of the fifth hydraulic two-way ball valve 20 through a flange pipeline, the other end of the fifth hydraulic two-way ball valve 20 is connected to the bottom platform ball valve through a flange pipeline, the second water outlet 17 is connected to one end of the ninth hydraulic two-way ball valve 21 and the tenth hydraulic two-way ball valve 26 through a flange three-way pipeline, the other end of the tenth hydraulic two-way ball valve 26 is connected to the bottom platform ball valve through a flange pipeline. The pipeline used in this patent is welded from seamless steel pipes, and the output flow of the pipe diameter is doubled compared with the existing technology. The pipeline route is optimized to reduce flow loss. The hydraulic two-way ball valve used in this patent is different from the three-way ball valve used in traditional technology. Although the three-way ball valve is convenient for pipeline connection, it has a low fault tolerance rate and is easy to hinder the construction process. The two-way ball valve used in this patent can effectively reduce risks and improve work efficiency. At the same time, it adopts hydraulic startup instead of electric startup, and can carry the transportation of high-pressure fluids. The oil suction port of the hydraulic pump 7 is connected to the hydraulic oil tank 4 through an oil pipe. The hydraulic oil tank 4 is a fully enclosed oil storage device. An exhaust flange is installed on the upper end of the hydraulic oil tank 4. The hydraulic oil tank 4 is connected to the hydraulic pump pressure compensator 8 through an interface. By equipping the hydraulic pump pressure compensator, the negative pressure machine can achieve a pressure-resistant effect, thereby adapting to the deep-sea operating environment; the oil outlet of the hydraulic pump 7 is connected to the overflow valve, high-pressure gauge, high-pressure filter and one-way valve through an oil pipe. The branch of the one-way valve is connected to the accumulator and the electronic warehouse 3 The pressure joint of the one-way valve is connected to two groups of hydraulic valve compartments 6 through an oil pipe. The hydraulic valve compartment 6 is composed of eight groups of solenoid valves, a valve block and an external corrosion-resistant stainless steel shell. Each group of solenoid valves is connected to the ball valve switch and the claw cylinder through an oil inlet pipe and an oil return pipe. There are two groups of claw cylinders, and the two groups of claw cylinders are connected to one group of solenoid valves through an oil inlet pipe and an oil return pipe. The claw cylinders are respectively connected to the locking claws 14, and the oil return port of the valve block is connected to the oil return port of the hydraulic oil compartment 6 through a low-pressure filter and an oil pipe.

[0022] The method for installing a negative pressure machine for installing a negative pressure cylinder comprises the following steps: Lift the negative pressure machine above the negative pressure cylinder structure, connect the bottom flange 11 of the negative pressure machine with the negative pressure cylinder pipeline collection flange, and clamp the negative pressure cylinder pipeline platform with the locking claw 14; Start the first dredging pump 2 and the second dredging pump 12, close the No. 2 hydraulic two-way ball valve 23 and the No. 7 hydraulic two-way ball valve 25, open all the other hydraulic two-way ball valves, sink the negative pressure cylinder, and use the negative pressure machine to suck water into the negative pressure cylinder and discharge it into the sea. During the sinking of the negative pressure cylinder, if the inclinometer in the electronic warehouse 3 tilts and needs to be leveled, close the bottom platform ball valve as appropriate. If there is a serious deflection, close the No. 1 hydraulic two-way ball valve 18 and the No. 6 hydraulic two-way ball valve 22, open the No. 2 hydraulic two-way ball valve 23 and the No. 7 hydraulic two-way ball valve 25, and lift the negative pressure cylinder; After the negative pressure cylinder is sunk into place, the locking claw 14 is released and the negative pressure machine is hoisted for recovery.

[0023] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

Claims

1. A negative pressure machine for installing a negative pressure cylinder, comprising a frame (1), an electronic compartment (3), a hydraulic oil compartment (4), a watertight wiring compartment (5), a hydraulic valve compartment (6), a hydraulic pump (7), a hydraulic pump pressure compensator (8), and a watertight camera compartment (9), characterized in that: The bottom of the frame (1) is provided with a flange (11) that is connected to the negative pressure cylinder; a signal control system and a hydraulic control system are provided inside the frame (1); the signal control system is composed of the watertight wiring compartment (5), the electronic compartment (3), and the watertight camera compartment (9); the hydraulic control system is composed of a hydraulic oil compartment (4) and a hydraulic valve compartment (6); the main wiring head of the watertight wiring compartment (5) is connected to the construction platform control center via an umbilical cable; the auxiliary wiring head of the watertight wiring compartment (5) is connected to the first dredging pump (2) and the second dredging pump (12); the watertight wiring compartment (5) is connected to the electronic compartment (3) via a power supply line, a signal line, and a network cable; The first dredging pump (2) comprises a first water inlet (13) and a first water outlet (16), and the second dredging pump (12) comprises a second water inlet (15) and a second water outlet (17). The first water inlet (13) is connected to one end of a No. 1 hydraulic two-way ball valve (18) and a No. 2 hydraulic two-way ball valve (23) through a flange three-way pipeline, and the second water inlet (15) is connected to one end of a No. 6 hydraulic two-way ball valve (22) and a No. 7 hydraulic two-way ball valve (25) through a flange three-way pipeline. The other end of the No. 1 hydraulic two-way ball valve (18) is connected to the bottom platform ball valve through a flange pipeline. The first outlet (17) is connected to one end of a No. 1 hydraulic two-way ball valve (18) and a bottom platform ball valve through a flange pipeline. The water inlet (16) is connected to one end of a No. 3 hydraulic two-way ball valve (24) and a No. 4 hydraulic two-way ball valve (19) through a flange three-way pipeline, the No. 4 hydraulic two-way ball valve (19) is connected to one end of a No. 5 hydraulic two-way ball valve (20) through a flange pipeline, the other end of the No. 5 hydraulic two-way ball valve (20) is connected to the bottom platform ball valve through a flange pipeline, the second water outlet (17) is connected to one end of a No. 9 hydraulic two-way ball valve (21) and a No. 10 hydraulic two-way ball valve (26) through a flange three-way pipeline, the other end of the No. 10 hydraulic two-way ball valve (26) is connected to the bottom platform ball valve through a flange pipeline, The oil suction port of the hydraulic pump (7) is connected to the hydraulic oil tank (4) through an oil pipe, and the oil outlet of the hydraulic pump (7) is connected to the overflow valve, the high-pressure gauge, the high-pressure filter and the one-way valve through an oil pipe. The branch of the one-way valve is connected to the accumulator and the pressure joint of the electronic tank (3), and the main line of the one-way valve is connected to the two groups of hydraulic valve tanks (6) through an oil pipe.

2. A negative pressure machine for installing a negative pressure cylinder according to claim 1, characterized in that: The frame (1) is a steel structure frame used for mounting and supporting the internal structure of the negative pressure machine.

3. A negative pressure machine for installing a negative pressure cylinder according to claim 1, characterized in that: The watertight wiring compartment (5) adopts wet sealing.

4. A negative pressure machine for installing a negative pressure cylinder according to claim 1, characterized in that: The electronic compartment (3) adopts dry sealing.

5. A negative pressure machine for installing a negative pressure cylinder according to claim 1, characterized in that: The hydraulic valve chamber (6) adopts a wet seal.

6. A negative pressure machine for installing a negative pressure cylinder according to claim 1, characterized in that: The hydraulic oil tank (4) is a fully enclosed oil storage device. An exhaust flange is installed at the upper end of the hydraulic oil tank (4). The hydraulic oil tank (4) is connected to a hydraulic pump pressure compensator (8) via an interface.

7. A negative pressure machine for installing a negative pressure cylinder according to claim 1, characterized in that: A pressure-resistant watertight camera (10) is installed in the frame (1) for monitoring the status of the first water inlet (13), the second water inlet (15), the first water outlet (16), the second water outlet (17), the positioning pile legs and the locking claw (14).

8. A negative pressure machine for installing a negative pressure cylinder according to claim 1, characterized in that: The hydraulic valve bin (6) is composed of eight groups of solenoid valves, a valve block and an external corrosion-resistant stainless steel casing. Each group of solenoid valves is connected to a ball valve switch and a claw oil cylinder via an oil inlet pipe and an oil return pipe. The oil return port of the valve block is connected to the oil return port of the hydraulic oil bin (6) via a low-pressure filter and an oil pipe.

9. A negative pressure machine for installing a negative pressure cylinder according to claim 8, characterized in that: There are two groups of claw oil cylinders, which are connected to a group of electromagnetic valves via oil inlet pipes and oil return pipes, and the claw oil cylinders are respectively connected to locking claws (14).

10. The method for installing a negative pressure machine for installing a negative pressure cylinder according to any one of claims 1 to 9, characterized in that: The installation method comprises the following steps: 1) hoisting the negative pressure machine above the negative pressure cylinder structure, connecting the flange (11) at the bottom of the negative pressure machine to the negative pressure cylinder pipeline collection flange, and clamping the negative pressure cylinder pipeline platform with the locking claw (14); 2) Start the first dredging pump (2) and the second dredging pump (12), close the No. 2 hydraulic two-way ball valve (23) and the No. 7 hydraulic two-way ball valve (25), open all the other hydraulic two-way ball valves, sink the negative pressure cylinder, and use the negative pressure machine to suck water into the negative pressure cylinder and discharge it into the sea. During the sinking of the negative pressure cylinder, if the inclination angle meter of the electronic warehouse (3) tilts and needs to be leveled, close the bottom platform ball valve as appropriate. If serious deflection occurs, close the No. 1 hydraulic two-way ball valve (18) and the No. 6 hydraulic two-way ball valve (22), open the No. 2 hydraulic two-way ball valve (23) and the No. 7 hydraulic two-way ball valve (25), and lift the negative pressure cylinder; 3) After the negative pressure cylinder is sunk into place, the locking claw (14) is released and the negative pressure machine is hoisted for recovery.

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