Search

CN-122013837-A - Distributed dredger dredging system suitable for multi-working-condition trailing suction hopper dredger

CN122013837ACN 122013837 ACN122013837 ACN 122013837ACN-122013837-A

Abstract

The invention relates to the technical field of trailing suction hopper dredgers, and discloses a distributed dredger pump dredging system suitable for a plurality of working conditions, which is arranged on the trailing suction hopper dredger and comprises the following components: and the first in-cabin mud pump is arranged in the bow area of the trailing suction hopper dredger, and the second in-cabin mud pump is arranged in the second in-cabin mud pump. According to the distributed dredger dredging system suitable for the multi-working-condition drag suction dredger, the first in-cabin dredger and the second in-cabin dredger are respectively arranged at the two ends of the bow and the stern, and flexible switching of the suction dredger pipeline is combined, so that the drag suction dredger can efficiently cover a wider operation scene, and the invention can realize: the multi-mode operation of the multi-working conditions such as shallow water, medium deep water and ultra deep water ladder type dredging operation, full water depth covering, common dredging, ultra deep water serial dredging, underwater pump overhauling mode, bow blowing/bow spraying and backfilling is integrated, so that the engineering adaptability of the drag suction dredger can be improved.

Inventors

  • WANG YUGUO
  • GU YONG
  • MA ZHONGXIAN
  • DING HAIMING
  • FU YI

Assignees

  • 中交上海航道局有限公司

Dates

Publication Date
20260512
Application Date
20260320

Claims (10)

  1. 1. A distributed dredger dredging system for a suction hopper dredger adapted for multiple conditions, disposed on the suction hopper dredger, comprising: the first in-cabin dredger comprises a first in-cabin dredger body (1) and a second in-cabin dredger body (1); A second in-cabin mud pump (2) arranged in a stern area of the trailing suction hopper dredger; And the suction and discharge mud pipe system (3) is configured to be capable of being connected with the left drag head (4), the right drag head (5), the left underwater pump (6), the right underwater pump (7), the first in-cabin mud pump (1), the second in-cabin mud pump (2) and the mud cabin through switching pipelines, and switching of a plurality of dredging operation modes is realized through pipe system switching.
  2. 2. Distributed mud pump dredging system for suction hopper dredgers according to claim 1, characterized in that the first and the second in-cabin mud pumps (1, 2) are driven by variable frequency motors, which are connected with the corresponding mud pumps through single-speed gearboxes.
  3. 3. The distributed mud pump dredging system of the drag suction dredger suitable for multiple working conditions according to claim 2, wherein the suction dredger pipeline system (3) comprises a pipeline assembly and a control valve, wherein the pipeline assembly and the control valve are used for connecting an underwater pump, a first in-cabin mud pump (1), a second in-cabin mud pump (2), a mud cabin and a bow hydraulic filling device, and different dredging operations are switched by opening and closing the control valve.
  4. 4. A distributed dredger dredging system according to claim 3, wherein in medium and deep water conditions with a depth of 45m or less and a depth of 45m to 70m, a double underwater pump double harrow dredging mode is adopted: The sediment sucked by the right drag head (5) is conveyed to a pipeline B of the pipeline assembly through a right underwater pump (7) and then is guided into a mud cabin for storage, and the path is from the right drag head (5) to the right underwater pump (7), to the pipeline B and to the mud cabin; the sediment sucked by the left drag head (4) is conveyed to a pipeline A of the pipeline assembly through a left underwater pump (6) and then is guided into a mud cabin for storage, and the path is from the left drag head (4) to the left underwater pump (6), to the pipeline A and to the mud cabin; and when the working condition of digging depth is 45 m-70 m, the right drag head (5) and the left drag head (4) are adapted to the deep water working requirement through lengthening the drag arm.
  5. 5. A distributed dredger dredging system according to claim 3, wherein in ultra-deep water conditions with a depth of 70 m-120 m, a single-rake dredge mode is adopted in which the right underwater pump (7) is connected in series with the first in-cabin dredge pump (1): further lengthening a rake arm connected with the right rake head (5) under the working condition of 70 m-120 deep digging to meet the ultra-deep water operation requirement; Sediment collected by the right drag head (5) is guided into the mud cabin through the right underwater pump (7), the first in-cabin mud pump (1), the pipeline C of the pipeline assembly and the pipeline A in sequence, and the path is from the right drag head (5) to the right underwater pump (7) to the first in-cabin mud pump (1) to C to A to the mud cabin.
  6. 6. A drag suction dredger distributed dredger dredging system according to claim 3, characterized in that in special dredging conditions for isolation or maintenance of underwater pumps, a first in-cabin dredger (1) single operation mode is adopted: after the underwater pump on the dredging pipeline isolation rake arm is disassembled and replaced, sediment collected by the left rake head (4) is guided into a mud cabin through the first in-cabin mud pump (1), the pipeline C of the pipeline assembly and the pipeline A, and the path is from the right rake head (5), the right underwater pump (7), the first in-cabin mud pump (1), the pipeline C, the pipeline A and the mud cabin.
  7. 7. A distributed mud pump dredging system for a suction hopper dredger as claimed in claim 5 wherein there are at least two modes of operation in either a bow blow or a bow blow condition: the first mode is that the first in-cabin mud pump (1) operates independently, and sediment in the mud cabin is conveyed to the bow hydraulic filling device through the first in-cabin mud pump (1) and a pipeline C of the pipeline assembly in sequence; And the second mode is that the first in-cabin mud pump (1) and the second in-cabin mud pump (2) are in series connection operation, and sediment in the mud cabin is sequentially conveyed to the bow hydraulic filling device through the second in-cabin mud pump (2), the pipeline E, the pipeline D, the first in-cabin mud pump (1) and the pipeline C.
  8. 8. The distributed dredger dredging system for a suction hopper dredger according to claim 7, wherein the bow blowing or bow spraying condition further comprises a second in-cabin dredger (2) independent operation mode, and the dredger is communicated with the bow hydraulic filling device through the second in-cabin dredger (2), the pipeline E, the pipeline A and the pipeline C of the pipeline assembly in sequence.
  9. 9. A distributed dredger dredging system according to claim 3, wherein in the backfill mode, a second in-tank dredger (2) independent mode of operation is adopted: the mud cabin is sequentially communicated with the left rake pipe through a second in-cabin mud pump (2), a pipeline E and a pipeline D, or The mud cabin is communicated with the right rake pipe through a mud pump (2), a pipeline E and a pipeline D in the second cabin in sequence.
  10. 10. Distributed dredger dredging system for suction hopper dredgers according to claim 1, characterized in that the direction is clockwise from the side view of the dredger inlet to both the first in-cabin dredger (1) and the second in-cabin dredger (2).

Description

Distributed dredger dredging system suitable for multi-working-condition trailing suction hopper dredger Technical Field The invention relates to the technical field of trailing suction hopper dredgers, in particular to a distributed dredger pump dredging system applicable to a trailing suction hopper dredger under multiple working conditions. Background With the rapid promotion of global ocean engineering construction, the performance requirements of great engineering such as deep sea development, international channel upgrading, coastal port extension and the like on high-end dredging equipment are continuously improved, and an ultra-large, intelligent and green trailing suction hopper dredger is becoming core construction equipment in the engineering. At present, the power system configuration of the trailing suction hopper dredger generally adopts a one-to-two composite driving mode, in the mode, a main diesel engine is used as a prime motor of a main propulsion system and can be used as a prime motor of a shaft-driven generator, ship navigation is realized by driving a variable-pitch propeller, and meanwhile, the shaft-driven generator is driven to supply power to a whole ship power system, so that various operation equipment such as a dredger pump, a high-pressure flushing pump, a hydraulic system and the like are driven to operate. In the aspect of arrangement of an in-cabin dredge pump, the two in-cabin pumps are generally arranged at the stem position in a centralized manner in the traditional scheme, and the arrangement is convenient for overall planning of the cabin and the pump cabin, and can adapt to installation of a long rake arm to realize larger dredging depth, but the problems of single dredging operation mode, insufficient adaptability of complex working conditions and the like exist, and the diversified construction requirements of different dredging depths, hydraulic filling, backfilling and the like are difficult to meet. Disclosure of Invention In order to overcome the defects in the prior art, the invention provides a distributed dredger dredging system of a trailing suction hopper dredger suitable for multiple working conditions, and solves the problems in the background. The invention provides a distributed dredger dredging system suitable for a multi-working-condition trailing suction hopper dredger, which is arranged on the trailing suction hopper dredger and comprises the following components: The first in-cabin mud pump is arranged in the bow area of the trailing suction hopper dredger; The second in-cabin mud pump is arranged in the stern area of the trailing suction hopper dredger; And the suction and discharge pipeline is connected with the left drag head, the right drag head, the left underwater pump, the right underwater pump, the first in-cabin mud pump, the second in-cabin mud pump and the mud cabin through switching pipelines, and realizes the switching of a plurality of dredging operation modes through pipeline switching. Preferably, the first in-cabin mud pump and the second in-cabin mud pump are driven by variable frequency motors, and the variable frequency motors are connected with the corresponding mud pumps through single-speed gearboxes. Preferably, the suction and discharge mud pipe system comprises a pipeline assembly and a control valve, wherein the pipeline assembly and the control valve are used for connecting the underwater pump, the first in-cabin mud pump, the second in-cabin mud pump, the mud cabin and the bow hydraulic filling device, and the path switching of different dredging operations is realized through the opening and closing of the control valve. Preferably, under the medium and deep water working conditions of the depth of 45m or less and the depth of 45 m-70 m, a double-underwater pump double-rake dredging mode is adopted: The sediment sucked by the right drag head is conveyed to a pipeline B of the pipeline assembly through a right underwater pump and then is guided into a mud cabin for storage, and the path is from the right drag head to the right underwater pump to the pipeline B to the mud cabin; The sediment sucked by the left drag head is conveyed to a pipeline A of the pipeline assembly through a left underwater pump and then is guided into a mud cabin for storage, and the path is left drag head, left underwater pump, pipeline A and mud cabin; and when the working condition of digging depth is 45 m-70 m, the right drag head and the left drag head are adapted to the deepwater working requirement through the lengthened drag arm. Preferably, under the ultra-deep water condition of 70 m-120 m of depth, a single-rake mud-digging mode is adopted in which a right underwater pump is connected with a first in-cabin mud pump in series: Further lengthening a rake arm connected with the right rake head under the working condition of 70 m-120 deep digging to meet the ultra-deep water operation requirement; Sediment collected by the right drag head