Dredging and draining device for cable trench, control method and control device thereof

Abstract

The invention discloses a desilting and draining device of a cable trench, a control method and a control device of the desilting and draining device. The desilting and draining device of the cable trench comprises a cyclone separator, a sewage pump, a water level gauge, a turbidity sensor, a rain gauge and the control device. The cyclone separator is arranged in the cable trench, the cyclone separator is provided with a water outlet and a drain outlet, and the cyclone separator is used for separating accumulated water entering from the water inlet and discharging the separated accumulated water through the water outlet and the drain outlet. The sewage pump is communicated with the sewage outlet, the water level gauge is arranged in the cable trench and used for detecting the water level value in the cable trench, the turbidity sensor is arranged in the cable trench and used for detecting the turbidity value of accumulated water, and the rain gauge is arranged in the cable trench and used for detecting the rainfall value in the cable trench. The control device is used for controlling the sewage pump to operate based on at least one of the water level value, the turbidity value and the rainfall value. Solid-liquid graded discharge and automatic desilting of accumulated water are achieved, and the intelligent degree of desilting and drainage is improved.

Description

Technical Field

[0001] This application relates to the field of wind farm facility technology, and in particular to a dredging and drainage device, control method and control device for cable trenches. Background Technology

[0002] Wind farm infrastructure typically includes cable trenches to house cables. Water accumulation in these trenches can easily lead to insulation aging and short circuits in the cables. Especially in coastal or rainy areas, wind farm cable trenches can be flooded for more than 90 days a year. Traditional drainage systems are easily clogged by silt in the water, resulting in high costs and slow response times for manual cleaning. Summary of the Invention

[0003] This application aims to address at least one of the technical problems existing in the prior art or related technologies.

[0004] The first aspect of this application proposes a dredging and drainage device for cable trenches. This device includes: a hydrocyclone separator, a sewage pump, a water level gauge, a turbidity sensor, a rain gauge, and a control device. The hydrocyclone separator is located within the cable trench and has a drain outlet and a sewage outlet. The hydrocyclone separator separates the accumulated water entering through the inlet and discharges it through the drain outlet and sewage outlet. The sewage pump is connected to the sewage outlet. The water level gauge is located within the cable trench and is used to detect the water level. The turbidity sensor is located within the cable trench and is used to detect the turbidity of the accumulated water. The rain gauge is located within the cable trench and is used to detect the rainfall. The control device controls the operation of the sewage pump based on at least one of the water level, turbidity, and rainfall values.

[0005] In some of the technical solutions provided in this application, the dredging and drainage device further includes: a backwashing mechanism, a flow channel guide provided at the outlet of the sewage pump, and the nozzle of the backwashing mechanism facing the flow channel guide and used to spray flushing medium onto the flow channel guide.

[0006] In some of the technical solutions provided in this application, the dredging and drainage device further includes a heating mechanism, which is located at the drain outlet and / or sewage outlet.

[0007] In some of the technical solutions provided in this application, the dredging and drainage device also includes: a solar panel and an energy storage battery, wherein the solar panel is used to convert light energy into electrical energy, and the energy storage battery is connected to the solar panel.

[0008] The second aspect of this application proposes a control method for a dredging and drainage device for cable trenches. This control method is used in any of the aforementioned dredging and drainage devices. The control method includes: controlling a water level gauge to detect the water level in the cable trench; controlling a turbidity sensor to detect the turbidity of the water accumulated in the cable trench; and controlling a rain gauge to detect the rainfall in the cable trench. Based on at least one of the water level, turbidity, and rainfall values, the method controls the operation of a sewage pump. Specifically, the step of controlling the operation of the sewage pump based on at least one of the water level, turbidity, and rainfall values ​​includes: determining a low-speed drainage mode when the water level is less than or equal to a first water level, the turbidity is less than or equal to a first turbidity value, and the rainfall is less than or equal to a first rainfall value; and controlling the sewage pump to operate at a low speed.

[0009] In some of the technical solutions provided in this application, the steps of controlling the operation of a sewage pump based on at least one of water level value, turbidity value and rainfall value specifically include: determining that the pump is in a high turbidity mode when the water level value is less than or equal to a first water level value and the turbidity value is greater than a first turbidity value; and controlling the sewage pump to operate at a medium speed; wherein the medium speed is greater than the low speed.

[0010] In some technical solutions provided in this application, after the step of controlling the sewage pump to operate at a medium speed, the method further includes: determining that the state is in a pre-release state when the turbidity value is less than the second turbidity value; and controlling the sewage pump to operate at a low speed when the duration of the pre-release state reaches the turbidity release time; wherein the second turbidity value is less than the first turbidity value.

[0011] In some of the technical solutions provided in this application, the steps of controlling the operation of the sewage pump based on at least one of water level value, turbidity value and rainfall value specifically include: determining that the emergency mode is in effect when the water level value is greater than a first water level value or the rainfall value is greater than a first rainfall value; controlling the sewage pump to operate at a high speed; wherein, the high speed is greater than the low speed.

[0012] In some technical solutions provided in this application, after the step of controlling the sewage pump to run at high speed, the method further includes: determining that the water level is in a rain-stopped state when the water level is lower than the second water level; and controlling the sewage pump to run at low speed when the duration of the rain-stopped state reaches the duration of the rainstorm relief; wherein the second water level is lower than the first water level.

[0013] The third aspect of this application proposes a control device for a cable trench dredging and drainage system. This control device includes a control module and a determination module. The control module controls a water level gauge to detect the water level in the cable trench, a turbidity sensor to detect the turbidity of the water in the cable trench, and a rain gauge to detect the rainfall in the cable trench. The control module also controls the operation of a sewage pump based on at least one of the water level, turbidity, and rainfall values. The determination module determines that the system is in a low-speed drainage mode when the water level is less than or equal to a first water level, the turbidity is less than or equal to a first turbidity value, and the rainfall is less than or equal to a first rainfall value. The control module also controls the sewage pump to operate at a low speed.

[0014] Compared with related technologies, the present invention has at least the following beneficial effects:

[0015] By utilizing a hydrocyclone separator for drainage, solid-liquid separation and automatic sludge removal of accumulated water are achieved, reducing the clogging failure rate of drainage operations, decreasing sediment deposition in the water, improving drainage efficiency, and simplifying the maintenance of the drainage and sludge removal devices. This reduces the workload and cost of cleaning and maintenance. Furthermore, the control device, based on the automatic and precise management of detection components, enhances the intelligence of the sludge removal and drainage process, maintaining a safe water level in the cable trench while preventing the sewage pump from running dry or failing to drain properly, thus reducing the sewage pump's energy consumption. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of some embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0017] Figure 1 A schematic diagram of the structure of a dredging and drainage device according to an embodiment of this application;

[0018] Figure 2 One of the schematic flowcharts of a control method for a dredging and drainage device according to an embodiment of this application;

[0019] Figure 3 A second schematic flowchart of a control method for a dredging and drainage device according to an embodiment of this application;

[0020] Figure 4 A structural block diagram of the control device of a dredging and drainage device according to an embodiment of this application.

[0021] in, Figures 1 to 4 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0022] 100. Cyclone separator; 110. Inlet; 120. Outlet; 130. Sewage outlet; 140. Cylinder; 141. Cylindrical section; 142. Conical section; 200. Sewage pump; 300. Water level gauge; 400. Turbidity sensor; 500. Rain gauge; 600. Control device; 610. Determination module; 620. Control module; 20. Cable trench. Detailed Implementation

[0023] To better understand the above technical solutions, the technical solutions of the embodiments of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0024] The first aspect of this application provides a dredging and drainage device for a cable trench 20, such as... Figure 1 As shown, the dredging and drainage device for the cable trench 20 includes: a hydrocyclone separator 100, a sewage pump 200, a water level gauge 300, a turbidity sensor 400, a rain gauge 500, and a control device 600. The hydrocyclone separator 100 is located inside the cable trench 20 and has a drain outlet 120 and a sewage outlet 130. The hydrocyclone separator 100 is used to separate the accumulated water entering through the inlet 110 and discharge it through the drain outlet 120 and the sewage outlet 130. The sewage pump 200 is connected to the sewage outlet 130. The water level gauge 300 is installed in the cable trench 20 and is used to detect the water level value in the cable trench 20. The turbidity sensor 400 is installed in the cable trench 20 and is used to detect the turbidity value of the accumulated water. The rain gauge 500 is installed in the cable trench 20 and is used to detect the rainfall value in the cable trench 20. The control device 600 is used to control the operation of the sewage pump 200 based on at least one of the water level value, turbidity value and rainfall value.

[0025] In this embodiment, water can accumulate in the cable trench 20, containing solid waste and liquid. The hydrocyclone 100 can be a hydrocyclone, which utilizes hydrocyclone separation technology to separate components of different densities into layers under centrifugal force. The hydrocyclone 100 is characterized by its compact structure and large processing capacity. Multiple hydrocyclones 100 can be used.

[0026] Specifically, the cyclone separator 100 includes a cylindrical body 140, which may be made of stainless steel. The cylindrical body 140 is provided with an inlet 110, an outlet 120, and a drain outlet 130. The drain outlet 130 is located at the bottom of the cylindrical body 140, and the height of the outlet 120 is higher than that of the drain outlet 130. The cylindrical body 140 includes a connected cylindrical portion 141 and a conical portion 142 with a cone angle of 55°. The conical portion 142 is located below the cylindrical portion 141, and the drain outlet 130 is located in the conical portion 142. A drain pump 200 is connected to the drain outlet 130 and is used to extract the sludge from the drain outlet 130 to provide driving force for drainage. Accumulated water enters the cylindrical body 140 tangentially through the inlet 110 at a certain pressure, and a high-speed rotating flow field is generated within the cylindrical body 140 due to centrifugal force. Larger particles of silt and sediment in the accumulated water rotate downwards along the axial direction under the influence of the swirling flow field, and move outwards radially, exiting through the discharge outlet 130, forming an outer vortex flow field. Smaller particles of sediment move towards the central axis of the cylinder 140, forming an upward-moving inner vortex at the center of the axis, and are discharged through the drain outlet 120. This achieves two-phase separation of sediment in the accumulated water, enabling a silt and sediment separation efficiency of over 90%.

[0027] The cable trench 20 is equipped with detection devices, including a water level gauge 300, a turbidity sensor 400, and a rain gauge 500. The water level gauge 300 is used to detect the water level within the cable trench 20. For example, the water level gauge 300 can be an ultrasonic water level gauge with a range of 0m to 2m and an accuracy of ±1cm. The turbidity sensor 400 is used to detect the turbidity of the accumulated water, thereby obtaining the sediment content in the water. The rain gauge 500 is used to obtain the rainfall within the cable trench 20 to distinguish the type of inflow, determine whether the accumulated water is caused by rainfall, and the amount of rainfall. The water level, turbidity, and rainfall values ​​detected by the water level gauge 300, turbidity sensor 400, and rain gauge 500 are transmitted to the control device 600. The control device 600 can integrate the water volume, turbidity, and rainfall to determine the water accumulation status in the cable trench 20, forming a multi-modal drainage control logic to determine the drainage strategy and control the operation of the sewage pump 200. The power of the sewage pump 200 is adjusted as needed to match the speed and discharge volume of the sewage pump 200 with the water accumulation status.

[0028] By utilizing the hydrocyclone separator 100 for drainage, solid-liquid separation and automatic sludge removal of accumulated water are achieved, reducing the clogging failure rate of drainage operations, decreasing sediment deposition in the accumulated water, improving drainage efficiency, and reducing the difficulty of cleaning and maintaining the sludge removal and drainage devices, thereby reducing the workload and cost of cleaning and maintenance. Furthermore, the control device 600, based on the automatic and precise control of detection components, enhances the intelligence of sludge removal and drainage, ensuring that the water level in the cable trench 20 remains at a safe level while preventing the sewage pump 200 from running dry or insufficiently draining water, thus reducing the drainage energy consumption of the sewage pump 200.

[0029] For example, the cyclone separator 100 can be replaced by a sedimentation tank, which is used to separate the accumulated water entering the sedimentation tank through the inlet and discharge it through the outlet and sludge outlet of the sedimentation tank. The sludge pump 200 is connected to the sludge outlet.

[0030] In some embodiments provided in this application, the dredging and drainage device further includes a backwashing mechanism, wherein the outlet of the sewage pump 200 is provided with a flow channel guide, the nozzle of the backwashing mechanism faces the flow channel guide, and is used to spray flushing medium onto the flow channel guide.

[0031] In this embodiment, the flow channel guide can be a filter screen structure. The outlet of the sewage pump 200 is equipped with a metal flow channel guide and a backwashing mechanism. The flow channel guide is used to guide the sewage flow at the outlet. The nozzle of the backwashing mechanism sprays towards the flow channel guide, so that the nozzle can periodically backwash the flow channel guide with the flushing medium to clean the silt accumulated on the flow channel guide, keep the flow channel guide clean, prevent outlet blockage, realize the self-cleaning of the outlet, and avoid manual periodic dredging of the flow channel guide.

[0032] For example, the nozzle can be a high-pressure nozzle with tungsten carbide nozzle orifices, and the nozzle's spray pressure is 0.8 MPa. The backwashing mechanism can be connected to a flushing medium pipeline, and the flushing medium can be clean water.

[0033] For example, the dredging and drainage device also includes a drainage pump connected to the drain outlet 120, and the outlet of the drainage pump is provided with a flow channel guide and a backwashing mechanism.

[0034] In another possible embodiment, the flow guide is provided with a mechanical scraper to remove deposits on the flow guide.

[0035] In some embodiments provided in this application, the dredging and drainage device further includes a heating mechanism, which is disposed at the drain outlet 120 and / or the sewage outlet 130.

[0036] In this embodiment, the heating mechanism can be a carbon fiber heating film with a power of 300W / m. The heating mechanism can convert electrical energy into heat energy to melt ice and heat the drain outlet 120 and / or sewage outlet 130 to prevent the drain outlet 120 and / or sewage outlet 130 from freezing. This allows the dredging and drainage device to maintain smooth drainage in low-temperature conditions in cold regions, thus expanding the applicability of the dredging and drainage device.

[0037] In some embodiments provided in this application, the dredging and drainage device further includes a solar panel and an energy storage battery, wherein the solar panel is used to convert light energy into electrical energy, and the energy storage battery is connected to the solar panel.

[0038] In this embodiment, the solar panel is a 200W integrated solar panel, and the energy storage battery has a capacity of 1kWh. The solar panel converts solar energy into electrical energy, which is then transmitted to the energy storage battery. This allows the energy storage battery to provide power to the electrical components of the dredging and drainage device, including the sewage pump 200, control components, and detection components. This enables the dredging and drainage device to obtain electricity through photovoltaic power, improving its off-grid operation capability and allowing it to operate smoothly in areas without power supply, thus expanding its applicability.

[0039] A second aspect of this application provides a control method for a cable trench dredging and drainage device, which is used in any of the above-described dredging and drainage devices, such as... Figure 2 and Figure 3 As shown, the control method includes:

[0040] Step 101: Control the water level gauge to detect the water level value in the cable trench, control the turbidity sensor to detect the turbidity value of the water accumulated in the cable trench, and control the rain gauge to detect the rainfall value in the cable trench.

[0041] Step 201: Control the operation of the sewage pump based on at least one of the water level value, turbidity value, and rainfall value;

[0042] Step 201, which controls the operation of the sewage pump based on at least one of the water level, turbidity, and rainfall values, specifically includes:

[0043] Step 211: When the water level is less than or equal to the first water level, the turbidity is less than or equal to the first turbidity, and the rainfall is less than or equal to the first rainfall, it is determined that the system is in low-speed drainage mode.

[0044] Step 212: Control the sewage pump to run at a low speed.

[0045] In this embodiment, a water level gauge is used to detect the water level in the cable trench. A turbidity sensor is used to detect the turbidity of the accumulated water, thereby obtaining the sediment content in the water. A rain gauge is used to obtain the rainfall in the cable trench to distinguish the type of inflow, determine whether the accumulated water is caused by rainfall, and the amount of rainfall. By using at least one of the water level, turbidity, and rainfall values ​​detected by the water level gauge, turbidity sensor, and rain gauge respectively, the control device can integrate the water volume, turbidity, and rainfall to determine the water accumulation status in the cable trench, forming a multi-modal drainage control logic to determine the drainage strategy and control the operation of the sewage pump, adjusting the power of the sewage pump as needed to match the pump speed and discharge volume with the water accumulation status.

[0046] By utilizing a hydrocyclone separator for drainage, solid-liquid separation and automatic sludge removal of accumulated water are achieved, reducing the clogging failure rate of drainage operations, decreasing sediment deposition in the water, improving drainage efficiency, and simplifying the maintenance of the drainage and sludge removal devices. This reduces the workload and cost of cleaning and maintenance. Furthermore, the control device, based on the automatic and precise management of detection components, enhances the intelligence of the sludge removal and drainage process, maintaining a safe water level in the cable trench while preventing the sewage pump from running dry or failing to drain properly, thus reducing the sewage pump's energy consumption.

[0047] Specifically, the operating mode of the sewage pump in normal working mode is provided. For example, the first water level value can be 50cm, the first turbidity value can be 500NTU, and the first rainfall value can be 20mm / h. When the water level value is less than or equal to 50cm, the turbidity value is less than or equal to 500NTU, and the rainfall value is less than or equal to 20mm / h, it indicates that the water accumulation in the cable trench is small, the silt content is small, and there is no or only a small amount of rainwater. This situation meets the triggering conditions of the low-speed drainage mode. The control device is in the low-speed drainage mode of normal working state and controls the sewage pump to run at a low speed to ensure that the water level in the cable trench is always less than the safety threshold, while ensuring that the drainage effect of the sewage pump can meet the normal drainage needs and avoid excessive power consumption due to excessive speed of the sewage pump.

[0048] In some embodiments provided in this application, such as Figure 3 As shown, step 201, which controls the operation of the sewage pump based on at least one of the water level, turbidity, and rainfall values, specifically includes:

[0049] Step 221: If the water level is less than or equal to the first water level and the turbidity is greater than the first turbidity, determine that the system is in high turbidity mode.

[0050] Step 222: Control the sewage pump to run at medium speed;

[0051] Among them, the medium speed is greater than the low speed.

[0052] This embodiment provides an operating mode for the sewage pump in high turbidity mode. For example, when the water level is less than or equal to 50 cm and the turbidity is greater than 500 NTU, it indicates that although the amount of water in the cable trench is small, the water is turbid and has a high sediment content. This situation meets the triggering conditions for high turbidity mode. The control device determines that it is in a medium-priority high turbidity mode and controls the speed of the sewage pump to increase to a medium speed, so that the sewage pump increases the sewage discharge capacity and avoids clogging.

[0053] In some embodiments provided in this application, after step 222 of controlling the sewage pump to operate at a medium speed, the method further includes:

[0054] Step 223: If the turbidity value is less than the second turbidity value, determine that the state is in a pre-relief state;

[0055] Step 224: If the duration of the pre-relief state reaches the turbidity relief time, control the sewage pump to run at a low speed.

[0056] The second turbidity value is less than the first turbidity value.

[0057] In this embodiment, a method for resolving the high turbidity mode is provided. For example, the second turbidity value can be 300 NTU, and the turbidity resolution time can be 2 hours. When the turbidity value is less than 300 NTU, it indicates that the turbidity state in the cable trench has improved, and the control device determines that it is in a pre-resolution state. When the turbidity value is less than 300 NTU for 2 hours, the conditions for resolving the high turbidity mode are met, the control device determines to resolve the high turbidity mode, and controls the sewage pump speed to return to a low speed, making the sewage pump's drainage effect more in line with the actual situation and improving the rationality and intelligence of the sewage pump's operation.

[0058] In some embodiments provided in this application, such as Figure 3 As shown, step 201, which controls the operation of the sewage pump based on at least one of the water level, turbidity, and rainfall values, specifically includes:

[0059] Step 231: If the water level is greater than the first water level or the rainfall is greater than the first rainfall, determine that the emergency mode for heavy rain is activated.

[0060] Step 232: Control the sewage pump to run at high speed;

[0061] Among them, the higher speed is greater than the lower speed.

[0062] This embodiment provides an operating mode for the sewage pump in a rainstorm emergency mode. For example, if the water level is greater than 50cm or the hourly cumulative value of the rain gauge is greater than 20mm / h, it indicates that the water accumulation in the cable trench is large, or that the water accumulation is rainfall. This situation meets the triggering conditions for the rainstorm emergency mode. The control device determines that it is in the highest priority rainstorm emergency mode and controls the speed of the sewage pump to increase to a high speed. The high speed is greater than the medium speed, which improves the discharge capacity of the sewage pump, enabling the sewage pump to discharge the accumulated water in a timely manner. The drainage operation can cope with the situation of large water accumulation.

[0063] In some embodiments provided in this application, after step 232 of controlling the sewage pump to operate at a high speed, the method further includes:

[0064] Step 233: If the water level is lower than the second water level, it is determined that the rain has stopped.

[0065] Step 234: If the duration of the rain stoppage reaches the duration of the rainstorm relief, control the sewage pump to run at a low speed.

[0066] The second water level is lower than the first water level.

[0067] This embodiment provides a method for deactivating the rainstorm emergency mode. For example, the second water level can be 30cm, and the rainstorm deactivation duration can be 30 minutes. When the water level is less than 30cm, it indicates that the water level in the cable trench has dropped to a safe level, and the control device determines that the rain has stopped. If the water level remains less than 30cm for 30 minutes, the conditions for deactivating the rainstorm emergency mode are met, the control device determines to deactivate the rainstorm emergency mode, and controls the sewage pump speed to return to a low speed, making the sewage pump's drainage effect more in line with the actual situation and improving the rationality and intelligence of the sewage pump's operation.

[0068] In some embodiments provided in this application, the dredging and drainage device further includes: a slope sensor, which is disposed on the bottom surface of the cable trench and used to acquire the slope of the bottom surface of the cable trench. After step 201, which controls the operation of the sewage pump based on at least one of the water level value, turbidity value, and rainfall value, the device further includes:

[0069] Step 301: Adjust the drainage power of the sewage pump based on the bottom slope.

[0070] In this embodiment, adjustments to the operation of the sewage pump are proposed. A slope sensor is used to determine the inclination of the cable trench bottom surface, with an accuracy of ±0.1°. Under gravity, accumulated water flows along the inclined bottom surface of the cable trench; the magnitude and angle of the slope affect the flow pattern. A cyclone separator is located downstream of the bottom surface. When the downstream side of the bottom surface slopes downwards relative to the upstream side, the water flows downstream following the shape of the bottom surface, with the inclined surface providing a supporting effect, and the control device appropriately reduces the drainage power. When the downstream side of the bottom surface slopes upwards relative to the upstream side, the water must overcome the gravitational component to flow, with the inclined surface acting as an obstacle, and the control device appropriately increases the drainage power. A mapping database between the cable trench bottom surface slope and the sewage pump drainage power is established, enabling the control device to correct the drainage power based on the terrain slope and dynamically adjust the drainage strategy in conjunction with terrain data, thus improving the rationality of the drainage operation.

[0071] A third aspect of this application provides a control device 600 for a cable trench dredging and drainage system, such as... Figure 4 As shown, the control device 600 includes a control module 620 and a determination module 610. The control module 620 controls a water level gauge to detect the water level in the cable trench, a turbidity sensor to detect the turbidity of the water in the cable trench, and a rain gauge to detect the rainfall in the cable trench. The control module 620 is also used to control the operation of the sewage pump based on at least one of the water level, turbidity, and rainfall values. The determination module 610 is used to determine that the device is in a low-speed drainage mode when the water level is less than or equal to a first water level, the turbidity is less than or equal to a first turbidity, and the rainfall is less than or equal to a first rainfall. The control module 620 is also used to control the sewage pump to operate at a low speed.

[0072] In this embodiment, by utilizing a hydrocyclone separator for drainage, solid-liquid separation and automatic sludge removal of accumulated water are achieved. This reduces the clogging failure rate of drainage operations, decreases sediment deposition in the accumulated water, improves drainage efficiency, and reduces the difficulty of cleaning and maintaining the sludge removal and drainage device, thereby reducing the manual workload and costs associated with cleaning and maintenance. Furthermore, the control device 600, based on the automatic and precise control of detection components, enhances the intelligence of sludge removal and drainage, maintaining the water level in the cable trench at a safe level while preventing the sewage pump from running dry or causing insufficient drainage, thus reducing the sewage pump's energy consumption.

[0073] Specifically, the operating mode of the sewage pump in normal working mode is provided. The control device 600 is in the low-speed drainage mode of normal working state, and controls the sewage pump to run at a low speed to ensure that the water level in the cable trench is always below the safety threshold, while ensuring that the drainage effect of the sewage pump can meet the normal drainage needs, and avoiding excessive power consumption due to excessive speed of the sewage pump.

[0074] In some embodiments provided in this application, the determining module 610 is further configured to determine that the system is in a high turbidity mode when the water level is less than or equal to a first water level and the turbidity is greater than a first turbidity. The control module 620 is further configured to control the sewage pump to operate at a medium speed.

[0075] In some embodiments provided in this application, the determining module 610 is further configured to determine that the system is in a pre-relief state when the turbidity value is less than a second turbidity value. The control module 620 is further configured to control the sewage pump to operate at a low speed when the duration of the pre-relief state reaches the turbidity relief duration.

[0076] In some embodiments provided in this application, the determining module 610 is further configured to determine that the system is in a rainstorm emergency mode when the water level is greater than a first water level or the rainfall is greater than a first rainfall. The control module 620 is further configured to control the sewage pump to operate at a high speed.

[0077] In some embodiments provided in this application, the determining module 610 is further configured to determine that the rain has stopped when the water level is less than a second water level. The control module 620 is further configured to control the sewage pump to operate at a low speed when the duration of the rain stop state reaches the duration of the rainstorm relief.

[0078] In some embodiments provided in this application, the control module 620 is also used to adjust the drainage power of the sewage pump based on the bottom slope.

[0079] In this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0080] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0081] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0082] The above are merely some embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dredging and drainage device for cable trenches, characterized in that, include: A hydrocyclone separator is installed in a cable trench. The hydrocyclone separator has an inlet, a outlet, and a drain outlet. The hydrocyclone separator is used to separate the accumulated water entering through the inlet and discharge it through the outlet and the drain outlet. A sewage pump is connected to the sewage outlet; A water level gauge is installed inside the cable trench, and the water level gauge is used to detect the water level value inside the cable trench. A turbidity sensor is installed in the cable trench, and the turbidity sensor is used to detect the turbidity value of the accumulated water; A rain gauge is installed in the cable trench, and the rain gauge is used to detect the rainfall value in the cable trench; A control device for controlling the operation of the sewage pump based on at least one of the water level value, the turbidity value, and the rainfall value.

2. The dredging and drainage device for cable trenches according to claim 1, characterized in that, Also includes: The backwashing mechanism has a flow channel guide at the outlet of the sewage pump, and the nozzle of the backwashing mechanism faces the flow channel guide and is used to spray flushing medium onto the flow channel guide.

3. The dredging and drainage device for cable trenches according to claim 1 or 2, characterized in that, Also includes: A heating mechanism is provided at the drain outlet and / or sewage outlet.

4. The dredging and drainage device for cable trenches according to claim 1 or 2, characterized in that, Also includes: Solar panels are used to convert solar energy into electrical energy. An energy storage battery is connected to the solar panel.

5. A control method for a cable trench dredging and drainage device, characterized in that, The control method for the dredging and drainage device as described in any one of claims 1 to 4 includes: The water level gauge is controlled to detect the water level in the cable trench, the turbidity sensor is controlled to detect the turbidity of the water in the cable trench, and the rain gauge is controlled to detect the rainfall in the cable trench. The operation of the sewage pump is controlled based on at least one of the water level value, the turbidity value, and the rainfall value. The step of controlling the operation of the sewage pump based on at least one of the water level value, the turbidity value, and the rainfall value specifically includes: If the water level is less than or equal to the first water level, the turbidity is less than or equal to the first turbidity, and the rainfall is less than or equal to the first rainfall, the system is determined to be in a low-speed drainage mode. Control the sewage pump to operate at a low speed.

6. The control method for the cable trench dredging and drainage device according to claim 5, characterized in that, The step of controlling the operation of the sewage pump based on at least one of the water level value, the turbidity value, and the rainfall value specifically includes: If the water level is less than or equal to the first water level and the turbidity is greater than the first turbidity, it is determined that the system is in a high turbidity mode. Control the sewage pump to operate at medium speed; The medium speed is greater than the low speed.

7. The control method for the cable trench dredging and drainage device according to claim 6, characterized in that, Following the step of controlling the sewage pump to operate at a medium speed, the method further includes: If the turbidity value is less than the second turbidity value, it is determined that the state is in a pre-relief state; If the duration of the pre-relief state reaches the turbidity relief time, the sewage pump is controlled to operate at a low speed. The second turbidity value is less than the first turbidity value.

8. The control method for the cable trench dredging and drainage device according to claim 5, characterized in that, The step of controlling the operation of the sewage pump based on at least one of the water level value, the turbidity value, and the rainfall value specifically includes: If the water level is greater than the first water level or the rainfall is greater than the first rainfall, the system is determined to be in rainstorm emergency mode. Control the sewage pump to operate at high speed; The high speed is greater than the low speed.

9. The control method for the cable trench dredging and drainage device according to claim 8, characterized in that, Following the step of controlling the sewage pump to operate at high speed, the method further includes: If the water level is lower than the second water level, it is determined that the rain has stopped. If the duration of the rain-stopped state reaches the duration of the rainstorm relief, the sewage pump is controlled to operate at a low speed. The second water level value is less than the first water level value.

10. A control device for a cable trench dredging and drainage system, characterized in that, include: The control module is used to control the water level gauge to detect the water level value in the cable trench, control the turbidity sensor to detect the turbidity value of the water accumulated in the cable trench, and control the rain gauge to detect the rainfall value in the cable trench. The control module is also used to control the operation of the sewage pump based on at least one of the water level value, the turbidity value and the rainfall value; The determination module is used to determine that the system is in a low-speed drainage mode when the water level value is less than or equal to a first water level value, the turbidity value is less than or equal to a first turbidity value, and the rainfall value is less than or equal to a first rainfall value. The control module is also used to control the sewage pump to operate at a low speed.

Images