High-pressure flushing system of trailing suction dredger

Abstract

The utility model relates to a high-pressure flushing system of a trailing suction dredger. The device is characterized by comprising a high-pressure flushing pump, a high-pressure flushing pump suction pipeline, a high-pressure flushing pump series pipe, a high-pressure flushing pump suction valve, a series valve, a first isolating valve, a drag head flushing pipeline, a ballast pipeline, a ballast valve, a second isolating valve, a drag head flushing control valve, a mud cabin dilution valve, a mud cabin dilution pipe and a dilution nozzle, according to the high-pressure flushing system of the trailing suction hopper dredger, under the condition of the same loading capacity, the effective loading time is greatly shortened, the working efficiency is greatly improved, the pumping period is shortened, and the pumping time is greatly shortened and the economical efficiency is improved due to the fact that a mud cabin dilution system works all the time.

Description

TECHNICAL FIELD

[0001] The utility model relates to a dredger flushing system field especially relates to a high pressure flushing system of drag suction dredger. BACKGROUND

[0002] At present, the biggest high pressure flushing pump of domestic construction or has built, two pumps are connected in series when dredging, and the displacement is only 8000m³ / h and the biggest flushing pressure is 18bar, two pumps are connected in parallel when diluting in the mud chamber, the displacement is 20000m³ / h and the biggest pressure is 6bar, and the displacement and pressure cannot satisfy the increasing dredging engineering requirement. UTILITY MODEL CONTENTS

[0003] The utility model solves the technical problem to provide a high pressure flushing system of drag suction dredger, can solve the general drag suction dredger pipeline connection complex, and the displacement and pressure cannot satisfy the increasing dredging engineering requirement.

[0004] In order to solve the above technical problem, the utility model discloses the technical scheme as follows: a high pressure flushing system of drag suction dredger, its innovation point lies at: including high pressure flushing pump, high pressure flushing pump suction pipeline, high pressure flushing pump series connection pipe, high pressure flushing pump suction valve, series connection valve, first isolation valve, rake head flushing pipeline, ballast pipeline, ballast valve, second isolation valve, rake head flushing control valve, mud chamber dilution valve, mud chamber dilution pipe and dilution nozzle,

[0005] The high pressure flushing pump has two, and the high pressure flushing pump is connected through the high pressure flushing pump series connection pipe, and the series connection valve is arranged on the high pressure flushing pump series connection pipe, the series connection of two high pressure flushing pumps is realized by controlling the series connection valve, and the two high pressure flushing pumps are isolated by the first isolation valve,

[0006] The high pressure flushing pump suction pipeline is arranged on the input end of the high pressure flushing pump, the high pressure flushing pump suction valve is arranged on the high pressure flushing pump suction pipeline, and the opening and closing of the high pressure flushing suction pipeline are realized by controlling the high pressure flushing pump suction valve,

[0007] The output end of the high pressure flushing pump is connected on a rake head flushing pipeline, one end of a ballast pipeline is connected to the rake head flushing pipeline, and the ballast pipeline extends to the ballast water tank at the bow end of the dredger, and the ballast valve is arranged on the ballast pipeline, the rake head flushing control valve is installed on the rake head flushing pipeline to control the two rake head flushing pipelines respectively, the two rake head flushing pipelines are connected in parallel through the main pipeline, the second isolation valve is arranged on the main pipeline, the output ends of the two high pressure flushing pumps are isolated by the second isolation valve, the mud chamber dilution pipe is vertically connected to the main pipeline, the mud chamber dilution pipe extends to each mud chamber, the mud chamber dilution valve is arranged at the joint of the mud chamber dilution pipe and the main pipeline, and the dilution nozzle is arranged at the output end of the mud chamber dilution pipe extending to each mud chamber.

[0008] Further, the high-pressure flushing pump is driven by a 3400kW AC motor controlled by frequency conversion through a speed reduction gear box; the high-pressure flushing pressure is 24 bar for dredging operation; two high-pressure flushing pumps work in series, the single rake head flow is 9600 m3 / h for each pump at a pressure of 10 bar, or the single rake head flow is about 8000 m3 / h for each pump at a pressure of 12 bar; two high-pressure flushing pumps work in parallel, the single rake head flow is about 9600 m3 / h for each pump at a pressure of 10 bar; the rated rotating speed of each high-pressure flushing pump is 410 rpm, and the maximum power consumed by the motor is 3400 kW; the high-pressure flushing pressure is 6 bar for mud tank dilution; two high-pressure flushing pumps work in parallel, the single pump flow is about 12000 m3 / h for each pump at a pressure of 6 bar, and the power consumed by the motor is 2385 kW respectively.

[0009] The utility model has the advantages that:

[0010] 1) the high-pressure flushing system of the drag suction dredger in the utility model can greatly reduce the effective loading time under the same loading capacity, greatly improve the work efficiency, and save the time for pumping the mud tank, because the mud tank dilution system is always working, the pumping time is greatly reduced, and the economic efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] The utility model will be further described in detail below in combination with the drawings and specific embodiments.

[0012] Figure 1 FIG. 1 is a structural diagram of a high-pressure flushing system of a drag suction dredger according to the utility model.

[0013] Figure 2 FIG. 2 is a partial structural diagram of the high-pressure flushing system of the drag suction dredger according to the utility model. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0015] Therefore, the detailed description of the embodiments of the utility model provided in the drawings below is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0016] As shown in Figure 1 Figure 2 A high-pressure flushing system of a drag suction dredger, comprising high-pressure flushing pumps 1, high-pressure flushing pump suction pipelines 2, high-pressure flushing pump series pipelines 3, high-pressure flushing pump suction valves 4, series valves 5, first isolation valves 6, rake head flushing pipelines 7, ballast pipelines 8, ballast valves 9, second isolation valves 10, rake head flushing control valves 11, dredging chamber dilution valves 12, dredging chamber dilution pipelines 13 and dilution nozzles 14.

[0017] The high-pressure flushing pumps 1 are two, and the high-pressure flushing pumps 1 are connected through the high-pressure flushing pump series pipelines 3, and the high-pressure flushing pump series pipelines 3 are provided with the series valves 5; the series control of the two high-pressure flushing pumps is realized by controlling the series valves 5, and the two high-pressure flushing pumps are isolated through the first isolation valves 6.

[0018] The high-pressure flushing pump suction pipelines 2 are arranged on the input ends of the high-pressure flushing pumps 1, the high-pressure flushing pump suction pipelines 2 are provided with the high-pressure flushing pump suction valves 4, and the opening and closing of the high-pressure flushing suction pipelines are realized by controlling the high-pressure flushing pump suction valves.

[0019] The output ends of the high-pressure flushing pumps 1 are respectively connected to the rake head flushing pipelines 7, one of the rake head flushing pipelines 7 is externally connected to a ballast pipeline 8, the ballast pipeline 8 extends to a ballast water chamber at the bow end of the dredger, the ballast pipeline 8 is provided with the ballast valve 9, the rake head flushing control valves 11 are installed on the rake head flushing pipelines 7 to respectively control the two rake head flushing pipelines 7, the two rake head flushing pipelines 7 are connected in parallel through the main pipeline 15, the main pipeline 15 is provided with the second isolation valve 19, the output ends of the two high-pressure flushing pumps 1 are isolated through the second isolation valve 10, the main pipeline 15 is vertically connected to the dredging chamber dilution pipelines 13, the dredging chamber dilution pipelines 13 extend to the respective dredging chambers, the dredging chamber dilution valves 12 are arranged at the junctions of the dredging chamber dilution pipelines 13 and the main pipeline 15, and the dilution nozzles are arranged at the output ends of the dredging chamber dilution pipelines 13 extending to the respective dredging chambers.

[0020] The high-pressure flushing pumps 1 are driven by a 3400kW AC motor controlled by a frequency converter through a reduction gear box; the high-pressure flushing pressure is 24 bar during dredging operation; the two high-pressure flushing pumps 1 work in series, the single rake head flow rate is 9600 m3 / h when each pump works at a pressure of 10 bar, or the single rake head flow rate is about 8000 m3 / h when each pump works at a pressure of 12 bar; the two high-pressure flushing pumps work in parallel, the single rake head flow rate is about 9600 m3 / h when each pump works at a pressure of 10 bar, or the single rake head flow rate is about 8000 m3 / h when each pump works at a pressure of 12 bar. 3 / h; each high pressure water jet pump rated speed 410 rpm, the maximum power consumed by the motor is 3400 kW; dilution of the mud tank, high pressure water jet pressure 6 bar: two high pressure water jet pump in parallel, each pump at a pressure of 6 bar, the single pump flow is about 12000 m 3 / h, the power consumed by the motor is 2385 kW respectively.

[0021] The working principle of the utility model is: the high pressure water jet system of the drag suction dredger effectively reduces the effective loading time under the same loading capacity, greatly improves the working efficiency, and saves the time of pumping out the mud tank. Because the dilution system of the mud tank is always working, the pumping out time is greatly reduced, and the economic efficiency is improved.

[0022] The skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model.

Claims

1. A high pressure water flushing system for a trailing suction hopper dredger, characterized in that: The high-pressure flushing pump, the high-pressure flushing pump suction pipeline, the high-pressure flushing pump series pipeline, the high-pressure flushing pump suction valve, the series valve, the first isolation valve, the rake head flushing pipeline, the ballast pipeline, the ballast valve, the second isolation valve, the rake head flushing control valve, the sludge tank dilution valve, the sludge tank dilution pipeline and the dilution nozzle are provided. The high-pressure flushing pump has two, and the high-pressure flushing pumps are connected through the high-pressure flushing pump series pipeline, and the series valve is arranged on the high-pressure flushing pump series pipeline; the series control of the two high-pressure flushing pumps is realized by controlling the series valve, and the two high-pressure flushing pumps are isolated through the first isolation valve. The high-pressure flushing pump suction pipeline is arranged on the input end of the high-pressure flushing pump, the high-pressure flushing pump suction valve is arranged on the high-pressure flushing pump suction pipeline, and the opening and closing of the high-pressure flushing suction pipeline are realized by controlling the high-pressure flushing pump suction valve. The output ends of the high-pressure flushing pumps are respectively connected to a rake head flushing pipeline, one of the rake head flushing pipelines is externally connected to a ballast pipeline, the ballast pipeline extends to the ballast tank at the bow end of the dredger, and the ballast valve is arranged on the ballast pipeline; the rake head flushing control valve is installed on the rake head flushing pipeline to control the two rake head flushing pipelines; the two rake head flushing pipelines are connected in parallel through the main pipeline, the second isolation valve is arranged on the main pipeline, and the output ends of the two high-pressure flushing pumps are isolated through the second isolation valve; the sludge tank dilution pipeline is vertically connected to the main pipeline, extends to each sludge tank, and the sludge tank dilution valve is arranged at the joint of the sludge tank dilution pipeline and the main pipeline; the dilution nozzle is arranged at the output end of the sludge tank dilution pipeline extending to each sludge tank.

2. A high pressure water flushing system for a trailing suction hopper dredger according to claim 1, characterized in that: The high pressure water jet pump is driven by a 3400 kW AC motor controlled by frequency conversion through a reduction gear box; for dredging, the high pressure water jet pressure is 24 bar; two high pressure water jet pumps work in series, the single rake head flow rate of each pump is 9600 m 3 / h at a pressure of 10 bar, or about 8000 m 3 / h at a pressure of 12 bar; two high pressure water jet pumps work in parallel, the single rake head flow rate of each pump is about 9600 m 3 / h at a pressure of 10 bar; each high pressure water jet pump has a rated speed of 410 rpm, and the maximum power consumed by the motor is 3400 kW; for slurry dilution, the high pressure water jet pressure is 6 bar; two high pressure water jet pumps work in parallel, the single pump flow rate of each pump is about 12000 m 3 / h at a pressure of 6 bar, and the power consumed by the motor is 2385 kW respectively.

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