Intelligent variable-frequency pneumatic dredging conveying and flow guarantee system

Abstract

The utility model discloses an intelligent variable-frequency pneumatic dredging conveying and flow guarantee system. The device belongs to the technical field of dredging and is composed of a cutter suction head, a conveying pipe system, an electric power distribution system, a solar power generation system, a generator, a controller, an air compressor, an air pump frequency conversion controller, an air pump, a cutter suction head power controller, a plurality of optical fiber cables and a plurality of air conveying pipelines. A pneumatic dredging conveying mode is designed, and compared with a traditional silt pump method, the pneumatic dredging conveying device is simple in structure and better in silt conveying smoothness; by adopting a solar energy and mechanical power generation hybrid energy mode, stable, green and energy-saving power supply can be realized; the method for judging the fluidity of the slurry in the conveying pipe system through the flow velocity loss of the conveying pipe system is adopted, variable-frequency raking and conveying are conducted in a cooperative control mode, and variable-frequency, energy-saving and high-smoothness dredging operation can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of dredging and relates to an intelligent variable frequency pneumatic dredging, conveying and flow guarantee system. Background Art

[0002] With the development of transportation and economy, the demand for dredging equipment for port and waterway desilting, dredging and island construction projects is increasing day by day. At present, the cutter suction dredger plays an important role in the dredging industry due to its flexible and efficient operation. During the operation of the cutter suction dredger, the patency of the silt conveying pipeline system and whether the overall equipment operation is energy-saving are important indicators for examining the applicability of the cutter suction dredging equipment project. Therefore, the utility model proposes an intelligent variable frequency pneumatic dredging conveying and flow guarantee system to achieve variable frequency energy saving and high patency dredging operations. Utility Model Content

[0003] In view of the above problems, the utility model aims to propose an intelligent variable frequency pneumatic dredging, conveying and flow guarantee system.

[0004] The technical solution of the utility model is: the intelligent variable frequency pneumatic dredging conveying and flow assurance system described in the utility model includes a conveying pipe system, and the conveying pipe system includes a mud inlet, a mixing pipe, a first flow meter, an air inlet, a second flow meter and a mud outlet;

[0005] An air pipeline is arranged at the air inlet, an air pump is arranged at the other end of the air pipeline, and the delivery pipe is connected to the air pump through the air pipeline at the air inlet.

[0006] The other end of the air pump is connected to an air pipeline, and an air compressor is arranged at the other end of the air pipeline. The air pump is connected to the air compressor through the air pipeline, and the delivery pipe system is connected to the air pump and the air compressor through the air inlet and the air pipeline.

[0007] Furthermore, a cutting suction head is arranged at one end of the conveying pipe system, and the conveying pipe system is connected to the cutting suction head through a mud inlet.

[0008] Furthermore, a fiber optic cable is connected to the third end of the air pump, and an air pump frequency conversion controller is arranged at the other end of the fiber optic cable. The air pump is connected to the air pump frequency conversion controller through the fiber optic cable.

[0009] An optical fiber cable is connected to the other end of the air pump frequency conversion controller, an air compressor and a controller are respectively arranged at the other end of the optical fiber cable, and the air pump frequency conversion controller is respectively connected to the air compressor and the controller through the optical fiber cable;

[0010] An optical fiber cable is connected to the second end of the controller, and a power distribution system is arranged at the other end of the optical fiber cable. The controller is connected to the power distribution system through the optical fiber cable.

[0011] The other end of the power distribution system is connected with an optical fiber cable, and the other ends of the optical fiber cable are respectively provided with a solar power generation system and a generator. The power distribution system is respectively connected to the solar power generation system and the generator through the optical fiber cable.

[0012] Furthermore, the current input port of the power dispatching system is connected to the solar power generation system and the generator, and a hybrid energy supply mode is adopted.

[0013] Furthermore, an optical fiber cable is connected to the third end of the controller, and the third end of the controller is connected to the first flow meter and the second flow meter respectively through the optical fiber cable;

[0014] The fourth end of the controller is also connected to an optical fiber cable, and the fourth end of the controller is connected to the suction head at the mud inlet through the optical fiber cable.

[0015] Furthermore, a suction head power controller is arranged on the optical fiber cable connected to the mud inlet at the fourth end of the controller.

[0016] Furthermore, the first flow meter and the second flow meter are respectively arranged at the rear of the mud inlet and the front of the mud outlet.

[0017] Furthermore, an intelligent variable frequency control method of an intelligent variable frequency pneumatic dredging conveying and flow assurance system specifically includes:

[0018] (1): The controller obtains the readings of the first flow meter and the second flow meter in real time F S1 、F S2 , and calculate the velocity loss along the way: F S1 -F S2 ;

[0019] (2): Compare the velocity loss along the way: F S1 -F S2 Value and working mode change threshold F l 、F l1 、F l2 、F l3 Adjust the working mode according to the size relationship.

[0020] Furthermore, four working modes are built into the air pump frequency conversion controller and the suction head power controller, namely, standby working mode, low frequency working mode, constant frequency working mode and high frequency working mode; at different flow velocity loss values ​​along the way: F S1 -FS2 The air pump frequency conversion controller and suction head power controller in the range match different working modes according to different engineering conditions:

[0021] When the system is initially working, the following first working mode is adopted:

[0022] First working mode: F S1 -F S2 ≤F l When the air pump frequency conversion controller and the suction head power controller correspond to the standby working mode, low frequency working mode, normal frequency working mode and high frequency working mode according to different working speed requirements;

[0023] Second working mode: F l1 >F S1 -F S2 >F l When the air pump frequency conversion controller and the suction head power controller are used, the corresponding relationship of the working modes of the air pump frequency conversion controller and the suction head power controller is adjusted according to different working speed requirements, that is, the standby working mode corresponds to the low-frequency working mode, the low-frequency working mode corresponds to the normal-frequency working mode, and the normal-frequency working mode corresponds to the high-frequency working mode; the specific changes can be adjusted according to the actual project;

[0024] The third working mode: F l2 >F S1 -F S2 >F l1 When the air pump frequency conversion controller and the suction head power controller are used, the corresponding relationship between the working modes of the air pump frequency conversion controller and the suction head power controller is that the standby working mode corresponds to the normal frequency working mode and the low frequency working mode corresponds to the high frequency working mode according to different working speed requirements; the specific changes can be adjusted according to the actual project;

[0025] Fourth working mode: F l3 >F S1 -F S2 >F l2 When the air pump frequency conversion controller and the suction head power controller are used, the corresponding working modes of the air pump frequency conversion controller and the suction head power controller are adjusted according to different working speed requirements, so that the standby working mode corresponds to the high-frequency working mode; the specific changes can be adjusted according to the actual project;

[0026] Fifth working mode: F S1 -F S2 >F l3 When the machine is shut down for dredging and maintenance.

[0027] Furthermore, the working mode change threshold F l 、F l1 、F l2 、F l3The size depends on different working environments, rheological properties of soil and actual projects.

[0028] Principle of the utility model: 1. The utility model designs a pneumatic dredging transportation method through the fluid negative pressure principle to form a high-patency mud transportation plan; 2. The utility model determines the fluidity of the mud in the transportation pipeline system by the flow velocity loss of the transportation pipeline system, and performs variable frequency raking and transportation through collaborative control.

[0029] The beneficial effects are: 1. The utility model designs a pneumatic dredging and conveying method through the fluid negative pressure principle. Compared with the traditional sludge pump method, it has a simple structure and better sludge conveying smoothness; 2. The utility model adopts a hybrid energy method of solar energy and mechanical power generation, which can provide stable, green and energy-saving power supply; 3. The utility model adopts a method of judging the fluidity of the mud in the conveying pipeline system by the flow velocity loss of the conveying pipeline system, and performs variable frequency raking and conveying through coordinated control, which can realize variable frequency energy saving and high-passivity dredging operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall composition of the system of the utility model;

[0031] Figure 2 This is the system frequency conversion regulation control flow chart of the utility model;

[0032] Figure 3 This is the first working mode of the system of the utility model;

[0033] Figure 4 It is a schematic diagram of the second working mode of the system of the utility model;

[0034] Figure 5 This is a schematic diagram of the third working mode of the system of the utility model;

[0035] Figure 6 This is a schematic diagram of the fourth working mode of the system of the utility model;

[0036] Figure 7 This is a schematic diagram of the fifth working mode of the system of the utility model;

[0037] In the figure: 1 is a suction head, 2 is a conveying pipe system, 21 is a mixing pipe, 22 is a mud inlet, 23 is a mud outlet, 24 is an air inlet, 25 is a first flow meter, and 26 is a second flow meter;

[0038] 3 is the power distribution system, 4 is the solar power generation system, 5 is the generator, 6 is the controller, 7 is the air compressor, 8 is the air pump frequency conversion controller, 9 is the air pump, and 10 is the suction head power controller. DETAILED DESCRIPTION

[0039] The specific technical scheme of the utility model is further described in detail below with reference to specific examples.

[0040] As shown in the figure, the intelligent variable frequency pneumatic dredging conveying and flow guarantee system described in the utility model includes a suction head 1, a conveying pipe system 2, a power allocation system 3, a solar power generation system 4, a generator 5, a controller 6, an air compressor 7, an air pump variable frequency controller 8, an air pump 9, a suction head power controller 10 and a number of optical fiber cables and gas pipelines;

[0041] The suction head 1 is used to rake up the sediment sludge on the riverbed or seabed, and deliver the raked sediment sludge to the delivery relationship 2;

[0042] The conveying pipe system 2 comprises a mixing pipe 21, a mud inlet 22, a mud outlet 23, an air inlet 24, a first flow meter 25 and a second flow meter 26. The conveying pipe system 2 is connected to the suction head 1 through the mud inlet 22 to facilitate the mud to enter the conveying pipe system 2.

[0043] The conveying pipe system 2 is connected to the air pump 9 and the air compressor 7 through the air inlet 24 and the air pipeline, and generates negative pressure by conveying air to the mixing pipe 21, thereby sucking and discharging the mud;

[0044] The first flow meter 25 and the second flow meter 26 are respectively located at the rear of the mud inlet 22 and the front of the mud outlet 23 to obtain the flow velocity of the mud before and after entering and exiting the mixing tube 21 in real time, and feed it back to the controller 6 to calculate the flow velocity attenuation of the mud passing through the mixing tube 21 in real time to judge the smoothness of the mud flow in the mixing tube 21;

[0045] The current input port of the power distribution system 3 is connected to the solar power generation system 4 and the generator 5, and a hybrid energy supply method is adopted. On the one hand, this makes the system more green and energy-saving, and on the other hand, it ensures the stability of the system power supply. The power distribution system 3 is used to rectify and distribute the current delivered by the solar power generation system 4 and the generator 5, and to supply power to the electrical equipment of the entire system; the controller 6 is directly powered by the power distribution system 3, and is respectively connected to the air compressor 7, the air pump frequency conversion controller 9, and the suction head power controller 10. The controller 6 obtains the flow rate information of the first flow meter 25 and the second flow meter 26 at the installation place in real time, and controls the working power and working mode of the air compressor 7, the air pump frequency conversion controller 9, and the suction head power controller 10. The flow condition of the conveying pipe system 2 has been judged through the flow rate information of the first flow meter 25 and the second flow meter 26 at the installation place, and the related equipment is controlled to be coordinated and regulated to achieve energy-saving and high-patency dredging work;

[0046] The air compressor 7, the air pump frequency conversion controller 8, and the air pump 9 together constitute the air transmission process of the system. The air pump frequency conversion controller 8 controls the air pump 9 to adjust the working mode to achieve variable frequency and high patency dredging operations; the suction head power controller 10 is connected to the suction head 1, and the suction head power controller 10 controls the suction head 1 to adjust the working mode to achieve variable frequency and high patency dredging operations.

[0047] Furthermore, the intelligent variable frequency control method of the intelligent variable frequency pneumatic dredging conveying and flow assurance system includes:

[0048] 1. The controller 6 obtains the readings F of the first flow meter 25 and the second flow meter 26 in real time. S1 、F S2 , and calculate the velocity loss along the way: F S1 -F S2 ;

[0049] 2. Compare the velocity loss along the way: F S1 -F S2 Value and working mode change threshold F l 、F l1 、F l2 、F l3 Adjust the working mode according to the size relationship.

[0050] Furthermore, the air pump frequency conversion controller 8 and the suction head power controller 10 are built with four working modes, namely, standby working mode, low frequency working mode, constant frequency working mode and high frequency working mode; at different flow velocity loss values ​​along the way: F S1 -F S2 The air pump frequency conversion controller 8 and the suction head power controller 10 within the range can match different working modes according to different engineering conditions:

[0051] When the system is initially working, the following first working mode is adopted:

[0052] First working mode: F S1 -F S2 ≤F l When the air pump frequency conversion controller 8 and the suction head power controller 10 correspond to the standby working mode, low frequency working mode, normal frequency working mode and high frequency working mode according to different working speed requirements;

[0053] Second working mode: F l1 >F S1 -F S2 >F lWhen the air pump frequency conversion controller 8 and the suction head power controller 10 are used, the corresponding relationship between the working modes of the air pump frequency conversion controller 8 and the suction head power controller 10 is that the standby working mode corresponds to the low-frequency working mode, the low-frequency working mode corresponds to the normal-frequency working mode, and the normal-frequency working mode corresponds to the high-frequency working mode according to different working speed requirements; the specific changes can be adjusted according to the actual project;

[0054] The third working mode: F l2 >F S1 -F S2 >F l1 When the air pump frequency conversion controller 8 and the suction head power controller 10 are used, the corresponding relationship between the working modes of the air pump frequency conversion controller 8 and the suction head power controller 10 is that the standby working mode corresponds to the normal frequency working mode and the low frequency working mode corresponds to the high frequency working mode according to different working speed requirements; the specific changes can be adjusted according to the actual project;

[0055] Fourth working mode: F l3 >F S1 -F S2 >F l2 When the air pump frequency conversion controller 8 and the suction head power controller 10 are used, the corresponding relationship between the working modes of the air pump frequency conversion controller 8 and the suction head power controller 10 is that the standby working mode corresponds to the high-frequency working mode according to different working speed requirements; the specific changes can be adjusted according to the actual project;

[0056] Fifth working mode: F S1 -F S2 >F l3 When the machine is shut down for dredging and maintenance.

[0057] Furthermore, the working mode change threshold F l 、F l1 、F l2 、F l3 The size depends on different working environments, rheological properties of soil and actual projects.

Claims

1. An intelligent variable frequency pneumatic dredging, conveying and flow assurance system, Features: The invention comprises a conveying pipe system (2), wherein the conveying pipe system (2) comprises a mud inlet (22), a mixing pipe (21), a first flow meter (25), an air inlet (24), a second flow meter (26) and a mud outlet (23); An air pipeline is arranged at the air inlet (24), an air pump (9) is arranged at the other end of the air pipeline, and the delivery pipe system (2) is connected to the air pump (9) via the air pipeline at the air inlet (24). The other end of the air pump (9) is connected to an air pipeline, and an air compressor (7) is arranged at the other end of the air pipeline. The air pump (9) is connected to the air compressor (7) through the air pipeline, and the delivery pipe system (2) is connected to the air pump (9) and the air compressor (7) through the air inlet (24) and the air pipeline; A suction head (1) is arranged at one end of the conveying pipe system (2), and the conveying pipe system (2) is connected to the suction head (1) via a mud inlet (22); The third end of the air pump (9) is connected to an optical fiber cable, and the other end of the optical fiber cable is provided with an air pump frequency conversion controller (8). The air pump (9) is connected to the air pump frequency conversion controller (8) via the optical fiber cable. The other end of the air pump frequency conversion controller (8) is connected to an optical fiber cable, the other end of the air pump frequency conversion controller (8) is connected to an optical fiber cable, the other end of the optical fiber cable is respectively provided with an air compressor (7) and a controller (6), and the air pump frequency conversion controller (8) is respectively connected to the air compressor (7) and the controller (6) via the optical fiber cable; An optical fiber cable is connected to the second end of the controller (6), and an electric power distribution system (3) is arranged at the other end of the optical fiber cable. The controller (6) is connected to the electric power distribution system (3) via the optical fiber cable. An optical fiber cable is connected to the other end of the power distribution system (3), and a solar power generation system (4) and a generator (5) are respectively arranged at the other end of the optical fiber cable. The power distribution system (3) is respectively connected to the solar power generation system (4) and the generator (5) through the optical fiber cable; The current input port of the power distribution system (3) is connected to the solar power generation system (4) and the generator (5), and a hybrid energy supply method is adopted; A fiber optic cable is connected to the third end of the controller (6), and the third end of the controller (6) is respectively connected to the first flow meter (25) and the second flow meter (26) through the fiber optic cable; The fourth end of the controller (6) is also connected to an optical fiber cable, and the fourth end of the controller (6) is connected to the suction head (1) at the mud inlet (22) through the optical fiber cable; A suction head power controller (10) is arranged on the optical fiber cable connected to the fourth end of the controller (6) and the mud inlet (22).

2. According to claim 1, an intelligent variable frequency pneumatic dredging, conveying and flow assurance system, Features: The first flow meter (25) and the second flow meter (26) are respectively arranged at the rear of the mud inlet (22) and the front of the mud outlet (23).

3. According to claim 1, an intelligent variable frequency pneumatic dredging, conveying and flow assurance system, Features: The air pump frequency conversion controller (8) and the suction head power controller (10) both have four built-in working modes, namely, a standby working mode, a low-frequency working mode, a normal-frequency working mode and a high-frequency working mode.

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