Slurry concentration determining system and method for dredging construction pipeline and storage medium

Abstract

The invention discloses a mud concentration determining system and method for a dredging construction pipeline and a storage medium. In the system, a signal acquisition device is used for acquiring the side wall voltage and clear water conductivity of a first mud discharge pipe when a mud conveying device conveys clear water, the side wall voltage and mud temperature of a second mud discharge pipe when mud is conveyed, and the cooling water conductivity and cooling water temperature of cooling water in a mud pump cooling device; transmitting the acquired data to a signal processing device; the signal processing equipment is used for determining the conductivity of carrier liquid in the slurry according to the temperature of the slurry, the temperature of the cooling water and the conductivity of the cooling water; the signal processing equipment is used for determining the mud conductivity according to the carrier liquid conductivity in the mud, the clear water conductivity, the first mud discharge pipe side wall voltage and the second mud discharge pipe side wall voltage; and the signal processing equipment is used for determining the slurry concentration of the slurry discharge pipe when the slurry conveying equipment conveys the slurry based on the conductivity of the carrier liquid in the slurry and the conductivity of the slurry. The practicability and the precision of determining the slurry concentration are improved.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the dredging technical field, and particularly to a system and method for determining the concentration of dredging construction pipeline slurry and a storage medium. BACKGROUND

[0002] As a core link of port construction and waterway maintenance, the real-time monitoring of the slurry concentration of the dredging construction pipeline directly affects the construction efficiency and safety. Currently, the slurry concentration of the dredging construction pipeline can be determined based on a gamma-ray density meter, but this method has problems such as radiation risk and expensive equipment, and poor practicability; the slurry concentration of the dredging construction pipeline can also be determined based on ultrasonic detection, but this method has problems such as precision interference by bubbles. SUMMARY

[0003] The present application provides a system and method for determining the concentration of dredging construction pipeline slurry and a storage medium, which can improve the practicability and precision of determining the concentration of dredging construction pipeline slurry.

[0004] In a first aspect, the embodiments of the present application provide a system for determining the concentration of dredging construction pipeline slurry, which comprises at least a dredging ship, and a slurry conveying device, a signal acquisition device, a signal processing device and a mud pump cooling device carried on the dredging ship.

[0005] The signal acquisition device is configured to acquire a first sludge discharge pipe wall voltage and a clear water conductivity when the slurry conveying device is conveying clear water, a second sludge discharge pipe wall voltage and a slurry temperature when the slurry conveying device is conveying slurry, and a cooling water conductivity and a cooling water temperature of the cooling water in the mud pump cooling device, and transmit the acquired data to the signal processing device.

[0006] The signal processing device is configured to determine a carrier liquid conductivity in the slurry according to the slurry temperature, the cooling water temperature and the cooling water conductivity.

[0007] The signal processing device is configured to determine a slurry conductivity according to the carrier liquid conductivity in the slurry, the clear water conductivity, the first sludge discharge pipe wall voltage and the second sludge discharge pipe wall voltage.

[0008] The signal processing device is configured to determine a slurry concentration of the slurry in the sludge discharge pipe when the slurry conveying device is conveying slurry based on the carrier liquid conductivity in the slurry and the slurry conductivity.

[0009] Further, the signal acquisition device comprises a first thermometer, a first conductivity meter and an electrode sensor array arranged in the sludge discharge pipe of the slurry conveying device, and a second thermometer and a second conductivity meter arranged in the cooling water pipe of the mud pump cooling device; the signal acquisition device is connected to the signal processing device.

[0010] Further, the electrode sensor array is configured to acquire the first discharge pipe wall voltage and the second discharge pipe wall voltage in combination with the signal processing device.

[0011] The first conductivity meter and the second conductivity meter are respectively configured to acquire the clean water conductivity and the cooling water conductivity.

[0012] The first temperature meter and the second temperature meter are respectively configured to acquire the mud temperature and the cooling water temperature.

[0013] Further, the signal processing device is specifically configured to:

[0014] determine a ratio of the clean water conductivity to the carrier liquid conductivity in the mud as a linear conversion parameter;

[0015] determine a product of the first discharge pipe wall voltage and the linear conversion parameter as a converted discharge pipe wall voltage;

[0016] determine the mud conductivity by using a linear back-projection formula based on the converted discharge pipe wall voltage, the second discharge pipe wall voltage, a back-projection coefficient, and a number of electrodes of the electrode sensor array included in the signal acquisition device.

[0017] Further, the system further comprises a frequency conversion control cabinet, a first flow meter arranged in a discharge pipe of the mud conveying device, and a second flow meter arranged in a cooling water pipe of the mud pump cooling device; the first flow meter, the second flow meter, a mud pump included in the mud conveying device, and a cooling water pump included in the mud pump cooling device are all connected to the frequency conversion control cabinet.

[0018] Further, the first flow meter is configured to acquire a first flow value and transmit the first flow value to the frequency conversion control cabinet.

[0019] The second flow meter is configured to acquire a second flow value and transmit the second flow value to the frequency conversion control cabinet.

[0020] The frequency conversion control cabinet is configured to control a rotating speed of the cooling water pump in the mud pump cooling device based on the first flow value, the second flow value, a first distance from a suction port of the discharge pipe of the mud conveying device to the first flow meter, a second distance from a suction port of the cooling water pipe of the mud pump cooling device to the second flow meter, an inner diameter of the discharge pipe, and an inner diameter of the cooling water pipe.

[0021] Further, the mud conveying device comprises a discharge pipe, a discharge pipe suction port, and a mud pump.

[0022] Further, the mud pump cooling device comprises a cooling water pipe, a cooling water pipe suction port, a cooling water tank and a cooling water pump, and the cooling water tank is used for the mud pump of the mud delivery device.

[0023] In a second aspect, the present application provides a method for determining the concentration of mud in a dredging pipeline, which is applied to a system for determining the concentration of mud in a dredging pipeline, and the system comprises at least a dredging ship, and a mud delivery device, a signal acquisition device, a signal processing device and a mud pump cooling device carried on the dredging ship; the method comprises:

[0024] The signal acquisition device is used to acquire the first discharge pipe wall voltage and the conductivity of clean water when the mud delivery device delivers clean water, the second discharge pipe wall voltage and the temperature of mud when the mud delivery device delivers mud, and the conductivity and temperature of cooling water in the mud pump cooling device, and transmit the acquired data to the signal processing device;

[0025] The signal processing device is used to determine the conductivity of carrier liquid in mud according to the temperature of mud, the temperature of cooling water and the conductivity of cooling water;

[0026] The signal processing device is used to determine the conductivity of mud according to the conductivity of carrier liquid in mud, the conductivity of clean water, the first discharge pipe wall voltage and the second discharge pipe wall voltage;

[0027] The signal processing device is used to determine the concentration of mud in the discharge pipe when the mud delivery device delivers mud based on the conductivity of carrier liquid in mud and the conductivity of mud.

[0028] In a third aspect, the present application provides a computer readable storage medium, which stores a computer program, and the program is executed by a processor to realize the method of the second aspect.

[0029] The technical scheme of the embodiment of the present application is that the signal acquisition device acquires the first mud discharge pipe side wall voltage and the clean water conductivity when the mud conveying device conveys clean water, the second mud discharge pipe side wall voltage and the mud temperature when the mud conveying device conveys mud, and the cooling water conductivity and the cooling water temperature of the cooling water in the mud pump cooling device, and transmits the acquired data to the signal processing device; the signal processing device determines the carrier liquid conductivity in the mud according to the mud temperature, the cooling water temperature and the cooling water conductivity, determines the mud conductivity according to the carrier liquid conductivity in the mud, the clean water conductivity, the first mud discharge pipe side wall voltage and the second mud discharge pipe side wall voltage, and determines the mud concentration of the mud discharge pipe when the mud conveying device conveys mud based on the carrier liquid conductivity in the mud and the mud conductivity. The scheme acquires data through the signal acquisition device, and determines the mud concentration of the mud discharge pipe based on the acquired data through the signal processing device, realizes the correction of the carrier liquid conductivity in the mud in the process of determining the mud concentration, supports the determination of the mud concentration in a construction environment with variable carrier liquid conductivity, such as a tidal river section, and has high practicability and high precision.

[0030] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0032] Figure 1 is a structural schematic diagram of a mud concentration determination system of a dredging construction pipeline according to the first embodiment of the present application;

[0033] Figure 2 is a structural schematic diagram of a mud concentration determination system of a dredging construction pipeline according to the second embodiment of the present application;

[0034] Figure 3 is a structural schematic diagram of an electrode sensor array according to the second embodiment of the present application;

[0035] Figure 4 is a flow chart of a mud concentration determination method of a dredging construction pipeline according to the third embodiment of the present application. DETAILED DESCRIPTION

[0036] In order to better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present application.

[0037] It should be noted that the terms "first", "second" and the like in the present application are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0038] Embodiment one

[0039] Figure 1 It is a structural schematic diagram of a dredging construction pipeline mud concentration determination system according to the embodiment one of the present application. The present embodiment can be applied to the case of determining the mud concentration of the dredging construction pipeline.

[0040] As shown in Figure 1 , the system at least includes a dredging ship 1, and a mud conveying device 2, a signal acquisition device 3, a signal processing device 4 and a mud pump cooling device 5 carried on the dredging ship 1;

[0041] The signal acquisition device 3 is used to acquire the first discharge pipe wall voltage and the clean water conductivity when the mud conveying device 2 conveys clean water, the second discharge pipe wall voltage and the mud temperature when the mud conveying device 2 conveys mud, and the cooling water conductivity and the cooling water temperature of the cooling water in the mud pump cooling device 5, and transmit the acquired data to the signal processing device 4;

[0042] The signal processing device 4 is used to determine the carrier liquid conductivity in the mud according to the mud temperature, the cooling water temperature and the cooling water conductivity;

[0043] The signal processing device 4 is used to determine the mud conductivity according to the carrier liquid conductivity in the mud, the clean water conductivity, the first discharge pipe wall voltage and the second discharge pipe wall voltage;

[0044] The signal processing device 4 is configured to determine the slurry concentration in the discharge pipe when the slurry conveying device is conveying slurry based on the carrier liquid conductivity in the slurry and the slurry conductivity.

[0045] The dredging ship 1 can be a ship used for dredging operation; the slurry conveying device 2 can be a device used for conveying slurry from the dredged soil layer to the dredging ship 1; the signal acquisition device 3 can be a device used for data acquisition, which can be composed of multiple modules for signal acquisition, and different data can be acquired by different modules, which is not limited herein; the signal processing device 4 can be a device used for data processing; and the slurry pump cooling device 5 can be a device used for slurry pump cooling.

[0046] In actual operation, the slurry conveying device 2 can pump out slurry from the dredged soil layer, and the pumped slurry can be conveyed to the dredging ship 1 for storage through the slurry pump cooling device 5. In this process, the signal acquisition device 3 can act on the slurry conveying device 2 and the slurry pump cooling device 5 to acquire data, and transmit the acquired data to the signal processing device 4 for processing, so as to determine the slurry concentration by the signal processing device 4.

[0047] When the dredging ship 1 starts construction, clear water can be pumped by the slurry conveying device 2, and the first discharge pipe wall voltage and the clear water conductivity when the slurry conveying device 2 conveys clear water can be acquired by the signal acquisition device 3 arranged on the slurry conveying device 2, and the acquired first discharge pipe wall voltage and clear water conductivity can be transmitted to the signal processing device 4. The first discharge pipe wall voltage can be the wall voltage of the discharge pipe in the slurry conveying device when the slurry conveying device conveys clear water. The clear water conductivity can be the conductivity of clear water (which can be understood as water without slurry).

[0048] The slurry can be pumped by the slurry conveying device 2 for dredging operation, the second discharge pipe wall voltage and the slurry temperature when the slurry conveying device 2 conveys slurry can be acquired by the signal acquisition device 3 arranged on the slurry conveying device 2, and the acquired second discharge pipe wall voltage and slurry temperature can be transmitted to the signal processing device 4; the cooling water conductivity and the cooling water temperature of the cooling water in the slurry pump cooling device 5 can be acquired by the signal acquisition device 3 arranged on the slurry pump cooling device 5, and the acquired cooling water conductivity and cooling water temperature can be transmitted to the signal processing device 4. The second discharge pipe wall voltage can be the wall voltage of the discharge pipe in the slurry conveying device when the slurry conveying device conveys slurry. The slurry temperature and the cooling water temperature can be the temperatures of the slurry and the cooling water, respectively, and the cooling water can be, for example, seawater, which is not limited herein. The cooling water conductivity can be the conductivity of the cooling water.

[0049] Signal processing device 4 is used to determine the conductivity of the carrier fluid in the mud based on the mud temperature, cooling water temperature, and cooling water conductivity. Specifically, it can determine the carrier fluid conductivity in the conveyed mud by real-time correction based on the relationship between conductivity and temperature, expressed by the following formula:

[0050]

[0051] Where, σ 11 σ1 represents the conductivity of the carrier fluid in the mud; σ2 represents the conductivity of the cooling water; T1 represents the mud temperature; and T2 represents the cooling water temperature. The carrier fluid conductivity in the mud is a key parameter for measuring the electrical conductivity of the liquid phase (carrier fluid) in the mud.

[0052] Signal processing device 4 is used to determine the mud conductivity based on the conductivity of the carrier fluid in the mud, the conductivity of the clear water, and the sidewall voltages of the first and second mud discharge pipes. Specifically, it can correct the sidewall voltage of the first mud discharge pipe using the ratio of the conductivity of the clear water to the conductivity of the carrier fluid in the mud, obtaining the converted sidewall voltage of the mud discharge pipe; based on the converted sidewall voltage of the mud discharge pipe and the sidewall voltage of the second mud discharge pipe, and combined with a linear back projection algorithm, it determines the mud conductivity σ. m .

[0053] Signal processing device 4 is used to determine the mud concentration in the discharge pipe of the mud conveying equipment based on the conductivity of the carrier fluid and the mud conductivity. Specifically, the mud concentration in the discharge pipe can be determined by combining Maxwell's equations, expressed by the following formula:

[0054]

[0055] Where C is the mud concentration in the sludge discharge pipe; σ 11 σ is the conductivity of the carrier fluid in the mud; m The conductivity of the mud.

[0056] The technical scheme of the embodiment of the present application is that the signal acquisition device acquires the first discharge pipe side wall voltage and the clean water conductivity when the mud conveying device conveys clean water, the second discharge pipe side wall voltage and the mud temperature when the mud conveying device conveys mud, and the cooling water conductivity and the cooling water temperature of the cooling water in the mud pump cooling device, and transmits the acquired data to the signal processing device; the signal processing device determines the carrier liquid conductivity in the mud according to the mud temperature, the cooling water temperature and the cooling water conductivity, determines the mud conductivity according to the carrier liquid conductivity in the mud, the clean water conductivity, the first discharge pipe side wall voltage and the second discharge pipe side wall voltage, and determines the mud concentration of the discharge pipe when the mud conveying device conveys mud based on the carrier liquid conductivity in the mud and the mud conductivity. The scheme acquires data through the signal acquisition device, and determines the mud concentration of the discharge pipe based on the acquired data through the signal processing device, realizes the correction of the carrier liquid conductivity in the mud in the process of determining the mud concentration, supports the determination of the mud concentration in a construction environment with variable carrier liquid conductivity, such as a tidal river section, and has high practicability and high precision.

[0057] Embodiment two

[0058] Figure 2 Fig. 1 is a structural schematic diagram of a mud concentration determination system of a dredging construction pipeline according to the embodiment two of the present application, and the embodiment is a refinement of the structure and function of the devices included in the system based on the above-mentioned embodiment one.

[0059] The following is a refinement of the mud conveying device in the system:

[0060] In an embodiment, the mud conveying device includes a discharge pipe 21, a discharge pipe suction port 22 and a mud pump 23.

[0061] The discharge pipe 21 is a pipeline for conveying mud. The discharge pipe suction port 22 is a device at the end of the discharge pipe 21 close to the mud source, directly contacts the mud to be conveyed, and is responsible for introducing the mud into the discharge pipe 21. The mud pump 23 is a device for pumping the mud into the dredging ship 1 through the discharge pipe suction port 22 and the discharge pipe 21.

[0062] The following is a refinement of the mud pump cooling device in the system:

[0063] In an embodiment, the mud pump cooling device includes a cooling water pipe 51, a cooling water pipe suction port 52, a cooling water tank 53 and a cooling water pump 54, and the cooling water tank 53 acts on the mud pump 23 included in the mud conveying device.

[0064] The cooling water pipe 51 is a pipe for conveying cooling water. The cooling water pipe suction 52 is a device at the end of the cooling water pipe 51 close to the source of cooling water, which directly contacts the cooling water to be conveyed and is responsible for introducing the cooling water into the cooling water pipe 51. The cooling water tank 53 is a container for storing cooling water. The cooling water pump 54 is a device for pumping cooling water into the cooling water tank 53 through the cooling water pipe suction 52 and the cooling water pipe 51.

[0065] As shown in FIG. 1, the cooling water tank 53 acts on the slurry pump 23 included in the slurry conveying device, and the slurry pumped into the dredger 1 is cooled by the cooling water in the cooling water tank 53. Figure 2

[0066] The following is a refinement of the signal acquisition device in the system:

[0067] In one embodiment, the signal acquisition device includes a first thermometer 31, a first conductivity meter 32, and an electrode sensor array 33 arranged in the sludge discharge pipe 21 of the slurry conveying device, and a second thermometer 34 and a second conductivity meter 35 arranged in the cooling water pipe 51 of the slurry pump cooling device; the signal acquisition device is connected to the signal processing device 4.

[0068] The first thermometer 31, the first conductivity meter 32, and the electrode sensor array 33 are not limited in their arrangement position in the sludge discharge pipe 21, for example, they can be arranged near a position ten times the pipe diameter away from the slurry pump 23 in the sludge discharge pipe 21, and the order of their arrangement in the sludge discharge pipe 21 is not limited, where the pipe diameter refers to the pipe diameter of the sludge discharge pipe 21.

[0069] The second thermometer 34 and the second conductivity meter 35 are not limited in their arrangement position in the cooling water pipe 51, for example, they can be arranged at a position between the cooling water tank 53 and the cooling water pump 54 in the cooling water pipe 51, and the order of their arrangement in the cooling water pipe 51 is not limited.

[0070] As shown in FIG. 1, the first thermometer 31, the first conductivity meter 32, the electrode sensor array 33, the second thermometer 34, and the second conductivity meter 35 are all connected to the signal processing device 4. Figure 2 In one embodiment, the electrode sensor array 33 is used to acquire the first sludge discharge pipe wall voltage and the second slurry discharge pipe wall voltage in combination with the signal processing device 4.

[0071] The first conductivity meter 32 and the second conductivity meter 35 are respectively used to acquire the clean water conductivity and the cooling water conductivity.

[0072] The first thermometer 31 and the second thermometer 34 are respectively used to acquire the slurry temperature and the cooling water temperature.

[0073] The first thermometer 31 and the second thermometer 34 are respectively used to acquire the slurry temperature and the cooling water temperature.​

[0074] Among them, the electrode sensor array 33 is a sensor system composed of multiple electrodes arranged in a certain pattern. By simultaneously acquiring electrical signals (such as voltage) from multiple locations, it can monitor the spatial distribution or dynamic changes of the object being measured.

[0075] Figure 3 This is a schematic diagram of an electrode sensor array according to Embodiment 2 of the present invention, as shown below. Figure 3 As shown, the electrode sensor array 33 can consist of 16 electrodes arranged in a ring, and it can be installed on the inner wall of the sludge discharge pipe 21. In practical applications, an excitation mode can be preset, and an excitation current can be injected into the electrodes according to the excitation mode; a measurement rule can be preset, and different combinations of electrodes in the array can be selected as voltage acquisition electrode pairs according to the measurement rule; the voltage is determined by the potential difference of the voltage acquisition electrode pairs. The injection of excitation current into the electrodes and the voltage acquisition of the voltage acquisition electrode pairs can be achieved by the signal processing device 4 acting on the electrode sensor array 33.

[0076] In this way, the electrode sensor array 33, combined with the signal processing device 4, can acquire the voltage of the first row of mud pipe sidewalls when the mud conveying device 2 is conveying clean water, and acquire the voltage of the second row of mud pipe sidewalls when the mud conveying device 2 is conveying mud. The voltage of the first row of mud pipe sidewalls can be expressed as U. ij The voltage on the sidewall of the second row of mud pipes can be expressed as V. ij , where i represents the i-th excitation and j represents the j-th measurement.

[0077] The following is a detailed description of the signal processing equipment in the system:

[0078] In one embodiment, the signal processing device is specifically used for:

[0079] The ratio of the conductivity of the clean water to the conductivity of the carrier fluid in the mud was determined as the linear transformation parameter;

[0080] The product of the first sludge discharge pipe sidewall voltage and the linear transformation parameter is determined as the transformed sludge discharge pipe sidewall voltage;

[0081] Using the linear back projection formula, the mud conductivity is determined based on the converted mud discharge pipe sidewall voltage, the second mud discharge pipe sidewall voltage, the back projection coefficient, and the number of electrodes in the electrode sensor array included in the signal acquisition device.

[0082] The electrical conductivity of mud can be determined by the following formula:

[0083]

[0084] Where, σ m σ1 is the conductivity of mud; σ2 is the conductivity of clear water.11 For the conductivity of the carrier liquid in the slurry, σ1 / σ 11 That is, the linear conversion parameter; the first mud discharge pipe side wall voltage can be represented as U ij , the second mud discharge pipe side wall voltage can be represented as V ij , i represents the i-th excitation, j represents the j-th measurement; N is the number of electrodes of the electrode sensor array, M=N-3; B is the back projection coefficient.

[0085] The following is a refinement of the system also includes content:

[0086] In one embodiment, the system further comprises a frequency conversion control cabinet 6, a first flow meter 7 arranged in the mud discharge pipe 21 of the slurry conveying device, and a second flow meter 8 arranged in the cooling water pipe 51 of the mud pump cooling device; the first flow meter 7, the second flow meter 8, the slurry pump 23 included in the slurry conveying device and the cooling water pump 54 included in the mud pump cooling device are all connected to the frequency conversion control cabinet 6.

[0087] Among them, the first flow meter 7 is not limited in the setting position of the mud discharge pipe 21, such as can be arranged near the position of ten times the pipe diameter away from the slurry pump 23 in the mud discharge pipe 21. The second flow meter 8 is not limited in the setting position of the cooling water pipe 51, such as can be arranged at the position of the cooling water pipe 51 between the cooling water tank 53 and the cooling water pump 54.

[0088] The frequency conversion control cabinet 6 can be an electrical device for controlling and adjusting the operation of the pump, which can adjust the speed of the pump, and is realized based on a programmable logic controller (PLC). The setting position is not limited. As shown in Figure 2 The first flow meter 7, the second flow meter 8, the slurry pump 23 and the cooling water pump 54 are all connected to the frequency conversion control cabinet 6.

[0089] In one embodiment, the first flow meter 7 is used to obtain a first flow value and transmit it to the frequency conversion control cabinet 6;

[0090] The second flow meter 8 is used to obtain a second flow value and transmit it to the frequency conversion control cabinet 6;

[0091] The frequency conversion control cabinet 6 is used to control the speed of the cooling water pump 54 in the mud pump cooling device based on the first flow value, the second flow value, the first distance from the mud discharge pipe suction port 22 in the slurry conveying device to the first flow meter 7, the second distance from the cooling water pipe suction port 52 in the mud pump cooling device to the second flow meter 8, the inner diameter of the mud discharge pipe and the inner diameter of the cooling water pipe.

[0092] The speed of the cooling water pump 54 in the mud pump cooling device needs to meet the following formula:

[0093]

[0094] Wherein, Q1 and Q2 are the first flow value and the second flow value respectively; D1 and D2 are the inner diameter of the sludge discharge pipe and the inner diameter of the cooling water pipe respectively; L1 and L2 are the first distance and the second distance respectively.

[0095] The technical scheme of the embodiment of the present application refines the structure and role of each device in the slurry concentration determination system of the dredging construction pipeline, obtains the slurry conductivity based on the construction environment through systematic sensor arrangement and formula derivation on the premise of correcting the carrier liquid conductivity in the slurry based on the construction environment, determines the slurry concentration in combination with the carrier liquid conductivity in the slurry and the slurry conductivity, can overcome the influence of the change of the water conductivity in the tidal river section on the measurement, and has high measurement accuracy and is simple and practical.

[0096] Embodiment three

[0097] Figure 4 It is a flow chart of a slurry concentration determination method of a dredging construction pipeline according to the embodiment three of the present application, and the embodiment can be applied to the case of determining the slurry concentration of the dredging construction pipeline. The method is applied to the slurry concentration determination system of the dredging construction pipeline related in the embodiment of the present application, and the system at least includes a dredging ship, and a slurry conveying device, a signal acquisition device, a signal processing device and a mud pump cooling device carried on the dredging ship.

[0098] As shown in Figure 4 , the method comprises:

[0099] S410, through the signal acquisition device, the first sludge discharge pipe wall voltage and the clean water conductivity when the slurry conveying device conveys clean water, the second sludge discharge pipe wall voltage and the slurry temperature when the slurry conveying device conveys slurry, and the cooling water conductivity and the cooling water temperature of the cooling water in the mud pump cooling device are acquired, and the acquired data is transmitted to the signal processing device.

[0100] S420, through the signal processing device, the carrier liquid conductivity in the slurry is determined according to the slurry temperature, the cooling water temperature and the cooling water conductivity.

[0101] S430, through the signal processing device, the slurry conductivity is determined according to the carrier liquid conductivity in the slurry, the clean water conductivity, the first sludge discharge pipe wall voltage and the second sludge discharge pipe wall voltage.

[0102] S440, through the signal processing device, the slurry concentration of the sludge discharge pipe when the slurry conveying device conveys slurry is determined based on the carrier liquid conductivity in the slurry and the slurry conductivity.

[0103] The technical scheme of the embodiment of the present application, through the signal acquisition device: acquires the first mud discharge pipe wall voltage and the clean water conductivity when the mud conveying device conveys clean water, the second mud discharge pipe wall voltage and the mud temperature when the mud conveying device conveys mud, and the cooling water conductivity and the cooling water temperature of the cooling water in the mud pump cooling device, and transmits the acquired data to the signal processing device; through the signal processing device: according to the mud temperature, the cooling water temperature and the cooling water conductivity, the carrier liquid conductivity in the mud is determined; according to the carrier liquid conductivity in the mud, the clean water conductivity, the first mud discharge pipe wall voltage and the second mud discharge pipe wall voltage, the mud conductivity is determined; based on the carrier liquid conductivity in the mud and the mud conductivity, the mud concentration of the mud discharge pipe when the mud conveying device conveys mud is determined. The scheme acquires data through the signal acquisition device, and the mud concentration of the mud discharge pipe can be determined based on the acquired data through the signal processing device, and the correction of the carrier liquid conductivity in the mud is realized in the process of determining the mud concentration, which supports the determination of the mud concentration in a construction environment with variable carrier liquid conductivity, such as a tidal river section, has strong practicability and high precision.

[0104] Further, the signal acquisition device comprises: a first thermometer, a first conductivity meter and an electrode sensor array arranged in the mud discharge pipe of the mud conveying device, and a second thermometer and a second conductivity meter arranged in the cooling water pipe of the mud pump cooling device; the signal acquisition device is connected to the signal processing device.

[0105] Further, the electrode sensor array is used to acquire the first mud discharge pipe wall voltage and the second mud discharge pipe wall voltage in combination with the signal processing device;

[0106] The first conductivity meter and the second conductivity meter are respectively used to acquire the clean water conductivity and the cooling water conductivity;

[0107] The first thermometer and the second thermometer are respectively used to acquire the mud temperature and the cooling water temperature.

[0108] Further, according to the carrier liquid conductivity in the mud, the clean water conductivity, the first mud discharge pipe wall voltage and the second mud discharge pipe wall voltage, the mud conductivity is determined, comprising:

[0109] The ratio of the clean water conductivity to the carrier liquid conductivity in the mud is determined as a linear conversion parameter;

[0110] The product of the first mud discharge pipe wall voltage and the linear conversion parameter is determined as a converted mud discharge pipe wall voltage;

[0111] The mud conductivity is determined by using a linear back projection formula, based on the converted sludge discharge pipe edge wall voltage, the second sludge discharge pipe edge wall voltage, a back projection coefficient, and the number of electrodes of the electrode sensor array included in the signal acquisition device.

[0112] Further, the system further comprises a frequency conversion control cabinet, a first flow meter arranged in the sludge discharge pipe of the sludge conveying device, and a second flow meter arranged in the cooling water pipe of the mud pump cooling device; the first flow meter, the second flow meter, the sludge pump included in the sludge conveying device, and the cooling water pump included in the mud pump cooling device are all connected to the frequency conversion control cabinet.

[0113] Further, the method further comprises:

[0114] The first flow value is obtained by the first flow meter and transmitted to the frequency conversion control cabinet;

[0115] The second flow value is obtained by the second flow meter and transmitted to the frequency conversion control cabinet;

[0116] The rotation speed of the cooling water pump in the mud pump cooling device is controlled by the frequency conversion control cabinet based on the first flow value, the second flow value, the first distance from the sludge discharge pipe suction port in the sludge conveying device to the first flow meter, the second distance from the cooling water pipe suction port in the mud pump cooling device to the second flow meter, the sludge discharge pipe inner diameter, and the cooling water pipe inner diameter.

[0117] Further, the sludge conveying device comprises a sludge discharge pipe, a sludge discharge pipe suction port, and a sludge pump.

[0118] Further, the mud pump cooling device comprises a cooling water pipe, a cooling water pipe suction port, a cooling water tank, and a cooling water pump, and the cooling water tank acts on the sludge pump included in the sludge conveying device.

[0119] The mud concentration determination method provided by the embodiments of the present application has corresponding beneficial effects as the mud concentration determination system provided by any of the embodiments of the present application, which will not be repeated here.

[0120] The embodiments of the present application also provide a computer readable storage medium, which stores a computer program, and the program is executed by a processor to implement the mud concentration determination method provided by the embodiments of the present application.

[0121] In the context of the present application, a computer readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. Computer readable storage media can include, but are not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, a computer readable storage medium can be a machine readable signal medium. More specific examples of a machine readable storage medium will include one or more lines of a program of instructions in a transitory signal form, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0122] It should be understood that the various forms of flow shown above can be re-ordered, added to, or deleted from without departing from the spirit and scope of the present application. For example, the steps recited in the present application can be performed in parallel, in series, or in a different order, as long as the desired results of the technical solutions of the present application are achieved, which are not limited herein.

[0123] The above detailed description does not constitute a limitation on the protection scope of the present application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A system for determining the mud concentration in dredging construction pipelines, characterized in that, The system includes at least a dredging vessel, and mud conveying equipment, signal acquisition equipment, signal processing equipment and mud pump cooling equipment mounted on the dredging vessel; The signal acquisition device is used to acquire the side wall voltage and water conductivity of the first mud pipe when the mud conveying device is conveying clean water, the side wall voltage and mud temperature of the second mud pipe when the mud conveying device is conveying mud, and the cooling water conductivity and cooling water temperature of the cooling water in the mud pump cooling device, and transmit the acquired data to the signal processing device. The signal processing device is used to determine the conductivity of the carrier fluid in the mud based on the mud temperature, the cooling water temperature, and the cooling water conductivity. The signal processing device is used to determine the conductivity of the mud based on the conductivity of the carrier fluid in the mud, the conductivity of the clear water, the voltage of the sidewall of the first mud discharge pipe, and the voltage of the sidewall of the second mud discharge pipe. The signal processing device is used to determine the mud concentration in the discharge pipe when the mud conveying device conveys mud based on the conductivity of the carrier fluid in the mud and the conductivity of the mud.

2. The system according to claim 1, characterized in that, The signal acquisition device includes: a first thermometer, a first conductivity meter, and an electrode sensor array disposed in the mud discharge pipe of the mud conveying device; a second thermometer and a second conductivity meter disposed in the cooling water pipe of the mud pump cooling device; the signal acquisition device is connected to the signal processing device.

3. The system according to claim 2, characterized in that, The electrode sensor array is used in conjunction with the signal processing device to obtain the voltage of the first sludge discharge pipe sidewall and the voltage of the second sludge discharge pipe sidewall; The first conductivity meter and the second conductivity meter are used to obtain the conductivity of the clean water and the conductivity of the cooling water, respectively; The first thermometer and the second thermometer are used to obtain the temperature of the mud and the temperature of the cooling water, respectively.

4. The system according to claim 1, characterized in that, The signal processing device is specifically used for: The ratio of the conductivity of the clean water to the conductivity of the carrier fluid in the mud was determined as the linear transformation parameter; The product of the first sludge discharge pipe sidewall voltage and the linear transformation parameter is determined as the transformed sludge discharge pipe sidewall voltage; Using the linear back projection formula, the mud conductivity is determined based on the converted mud discharge pipe sidewall voltage, the second mud discharge pipe sidewall voltage, the back projection coefficient, and the number of electrodes in the electrode sensor array included in the signal acquisition device.

5. The system according to claim 1, characterized in that, The system also includes a frequency converter control cabinet, a first flow meter installed in the mud discharge pipe of the mud conveying equipment, and a second flow meter installed in the cooling water pipe of the mud pump cooling equipment; the first flow meter, the second flow meter, the mud pump included in the mud conveying equipment, and the cooling water pump included in the mud pump cooling equipment are all connected to the frequency converter control cabinet.

6. The system according to claim 5, characterized in that, The first flow meter is used to acquire a first flow value and transmit it to the frequency converter control cabinet; The second flow meter is used to acquire the second flow value and transmit it to the frequency converter control cabinet; The frequency converter control cabinet is used to control the rotational speed of the cooling water pump in the mud pump cooling equipment based on the first flow value, the second flow value, the first distance from the suction port of the mud discharge pipe in the mud conveying equipment to the first flow meter, the second distance from the suction port of the cooling water pipe in the mud pump cooling equipment to the second flow meter, the inner diameter of the mud discharge pipe and the inner diameter of the cooling water pipe.

7. The system according to claim 1, characterized in that, The mud conveying equipment includes: a mud discharge pipe, a mud discharge pipe suction port, and a mud pump.

8. The system according to claim 1, characterized in that, The mud pump cooling equipment includes a cooling water pipe, a cooling water pipe inlet, a cooling water tank, and a cooling water pump. The cooling water tank acts on the mud pump included in the mud conveying equipment.

9. A method for determining the mud concentration in a dredging construction pipeline, characterized in that, A mud concentration determination system applied to dredging construction pipelines, the system comprising at least a dredging vessel, and mud conveying equipment, signal acquisition equipment, signal processing equipment, and mud pump cooling equipment mounted on the dredging vessel; the method comprising: The signal acquisition device acquires the side wall voltage and water conductivity of the first mud pipe when the mud conveying device is conveying clean water, the side wall voltage and mud temperature of the second mud pipe when the mud conveying device is conveying mud, and the cooling water conductivity and cooling water temperature of the mud pump cooling device, and transmits the acquired data to the signal processing device. The signal processing device determines the conductivity of the carrier fluid in the mud based on the mud temperature, the cooling water temperature, and the cooling water conductivity. The mud conductivity is determined by the signal processing device based on the conductivity of the carrier fluid in the mud, the conductivity of the clear water, the voltage of the sidewall of the first mud discharge pipe, and the voltage of the sidewall of the second mud discharge pipe. The signal processing device determines the mud concentration in the discharge pipe of the mud conveying device when conveying mud, based on the conductivity of the carrier fluid in the mud and the conductivity of the mud.

10. A computer-readable storage medium, characterized in that, It stores a computer program that, when executed by a processor, implements the method as described in claim 9.

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