Pit water pumping control method and system

Abstract

The invention relates to the technical field of pit water treatment, in particular to a pit water pumping control method and system. The pit water pumping control method comprises the steps that the real-time liquid level in a water pit is compared with the preset liquid level; under the condition that the real-time liquid level in the pit is higher than the preset liquid level, a water suction pump is controlled to pump out water in the pit till the real-time liquid level in the pit is lower than the preset liquid level or flush with the preset liquid level; or, the real-time liquid level in the water pit is tracked, and whether the liquid level in the water pit is in the rising state or the falling state is judged; under the condition that the real-time liquid level in the pit rises and is higher than the preset liquid level, a water suction pump is controlled to pump out water in the pit; and under the condition that the real-time liquid level in the pit drops and is lower than the preset liquid level, the water suction pump is controlled to stop running. According to the pit water pumping control method, smooth drainage in the tunnel can be kept, so that safe operation of the cable and the working environment in the tunnel are guaranteed, and the situation that the water pump is damaged due to dry burning due to continuous operation of the water pump is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of pit water treatment, and in particular to a pit water pumping control method and system. Background Art

[0002] At present, in the cable tunnel, a pit for drainage is set at the bottom. Its main function is to ensure smooth drainage inside the tunnel and prevent water accumulation, so as to ensure the safe operation of the cable and the working environment inside the tunnel. The current drainage method is to control the water pump to pump water based on the liquid level of the pit, so as to discharge the water in the pit. However, since the water in the tunnel contains a lot of calcium carbonate impurities, a layer of scale will form on the surface of the liquid level detection float after a long time, causing the float to fail to detect the liquid level, resulting in untimely drainage of the pit and water accumulation, or causing the water pump to continue to run, resulting in dry burning and damage. Summary of the invention

[0003] The objectives of the present invention include, for example, providing a pit pumping control method and system, which can discharge the accumulated water in the pit in time to prevent it from being affected by scale, and keep the drainage inside the tunnel unobstructed to prevent water accumulation, thereby ensuring the safe operation of the cable and the working environment inside the tunnel, and can also avoid the situation where the water pump is continuously running and damaged by dry burning.

[0004] The embodiments of the present invention can be implemented as follows:

[0005] In a first aspect, the present invention provides a method for controlling pit pumping, comprising:

[0006] Receiving a detection signal output by a liquid level detection component representing a real-time liquid level in the pit;

[0007] Compare the real-time liquid level in the pit with the preset liquid level; when the real-time liquid level in the pit is higher than the preset liquid level, control the water pump to pump out the water in the pit until the real-time liquid level in the pit is lower than the preset liquid level or is flush with the preset liquid level;

[0008] Or, track the real-time liquid level in the pit, and determine whether the liquid level in the pit is in a rising state or in a falling state; when the real-time liquid level in the pit rises and is higher than the preset liquid level, control the water pump to pump out the water in the pit; when the real-time liquid level in the pit drops and is lower than the preset liquid level, control the water pump to stop running.

[0009] In an optional embodiment, the step of tracking the real-time liquid level in the water pit and determining whether the liquid level in the water pit is in a rising state or in a falling state includes:

[0010] Receive a signal representing the real-time liquid level output by the capacitive liquid level meter; when the capacitance parameter output by the capacitive liquid level meter increases, it is determined that the liquid level in the water pit is in a rising state; when the capacitance parameter output by the capacitive liquid level meter decreases, it is determined that the liquid level in the water pit is in a falling state;

[0011] Or, receive a signal representing the liquid level output by a static pressure level gauge; when the pressure parameter output by the static pressure level gauge increases, it is determined that the liquid level in the puddle is in a rising state; when the pressure parameter output by the static pressure level gauge decreases, it is determined that the liquid level in the puddle is in a falling state.

[0012] In an optional embodiment, the step of tracking the real-time liquid level in the water pit and determining whether the liquid level in the water pit is in a rising state or in a falling state includes:

[0013] Receive the signal representing the liquid level output by the laser distance measuring device; when the liquid level interval output by the laser distance measuring device decreases, it is determined that the liquid level in the water puddle is in a rising state; when the liquid level interval output by the laser distance measuring device increases, it is determined that the liquid level in the water puddle is in a falling state;

[0014] Or, receive a signal representing the liquid level output by the ultrasonic ranging component; when the liquid level interval output by the ultrasonic ranging component decreases, it is determined that the liquid level in the puddle is in a rising state; when the liquid level interval output by the ultrasonic ranging component increases, it is determined that the liquid level in the puddle is in a falling state.

[0015] In an optional embodiment, when controlling the water pump to pump out water in the pit, when the continuous operation time of the water pump is greater than a preset time, the water pump is controlled to stop running.

[0016] In a second aspect, the present invention provides a pit water pumping control system, the pit water pumping control system comprising a water pump, a liquid level detection component and a control component;

[0017] The liquid level detection component is arranged in the pit and is used to detect the liquid level in the pit; the control component is electrically connected to the water pump and the liquid level detection component and is used to implement the above-mentioned pit water pumping control method.

[0018] In an optional embodiment, the liquid level detection assembly includes a liquid level detection tube, a floating member, a floating sensing member, and a liquid level tracking member;

[0019] The liquid level detection tube is vertically set in the pit, and its bottom end is connected to the pit; the floating piece is floated in the liquid level detection tube, and the floating sensing piece is used to sense the position of the floating piece;

[0020] The liquid level tracking member is arranged at the bottom or the top of the liquid level detection tube and is used to detect the position of the floating member, the liquid level position of the liquid level detection tube or the liquid level position in the pit.

[0021] In an optional embodiment, the inner circumferential surface of the liquid level detection tube and the outer surface of the floating member are covered with an anti-scaling coating, and the anti-scaling coating includes one or more of PTFE, epoxy resin, fluoropolymer, and silicone material.

[0022] In an optional embodiment, the liquid level tracking component includes a capacitive liquid level gauge or a static pressure liquid level gauge, which is arranged at the bottom end of the liquid level detection tube and is used to track the liquid level in the liquid level detection tube or the liquid level in the pit where the liquid level detection tube is installed.

[0023] In an optional embodiment, the liquid level tracking device includes a laser ranging device or an ultrasonic liquid level measurement, which is arranged at the top of the liquid level detection tube and is used to track the liquid level in the liquid level detection tube or track the liquid level in the pit.

[0024] In an optional embodiment, the pit water pumping control system also includes a time relay; the time relay is electrically connected to the control component, and the time relay is used to count the operation time of the water pump.

[0025] The beneficial effects of the embodiments of the present invention include:

[0026] The pit pumping control method includes: receiving a detection signal representing the real-time liquid level in the pit output by a liquid level detection component; comparing the real-time liquid level in the pit with a preset liquid level; when the real-time liquid level in the pit is higher than the preset liquid level, controlling the pump to pump out the water in the pit until the real-time liquid level in the pit is lower than the preset liquid level or is flush with the preset liquid level; or, tracking the real-time liquid level in the pit, and judging whether the liquid level in the pit is in a rising state or in a falling state; when the real-time liquid level in the pit rises and is higher than the preset liquid level, controlling the pump to pump out the water in the pit; when the real-time liquid level in the pit drops and is lower than the preset liquid level, controlling the pump to stop running. The pit pumping control method can timely discharge the accumulated water in the pit to prevent it from being affected by scale, and keep the drainage inside the tunnel unobstructed to prevent water accumulation, thereby ensuring the safe operation of the cable and the working environment inside the tunnel, and can also avoid the continuous operation of the water pump, which is damaged by dry burning. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0028] Figure 1It is a schematic diagram of the structure of a pit water pumping control system in an embodiment of the present invention;

[0029] Figure 2 Schematic diagram of the structure of the liquid level detection component in an embodiment of the present invention.

[0030] Icons: 100-pit pumping control system; 10-pit; 110-pumping pump; 120-liquid level detection assembly; 121-liquid level detection tube; 122-floating part; 123-floating sensing part; 124-liquid level tracking part; 125-anti-scaling coating. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0036] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0037] Please refer to Figure 1 and Figure 2This embodiment provides a method for controlling water pumping in a pit 10, comprising:

[0038] receiving a detection signal representing the real-time liquid level in the pit 10 output by the liquid level detection component 120;

[0039] Compare the real-time liquid level in the pit with the preset liquid level; when the real-time liquid level in the pit 10 is higher than the preset liquid level, control the water pump 110 to pump out the water in the pit 10 until the real-time liquid level in the pit 10 is lower than the preset liquid level or is flush with the preset liquid level;

[0040] Or, track the real-time liquid level in the water pit, and determine whether the liquid level in the pit 10 is in a rising state or in a falling state; when the real-time liquid level in the pit 10 rises and is higher than the preset liquid level, control the water pump 110 to pump out the water in the pit 10; when the real-time liquid level in the pit 10 drops and is lower than the preset liquid level, control the water pump 110 to stop running.

[0041] Please refer to Figure 1 and Figure 2 The working principle of the pit 10 pumping control method is:

[0042] First, the method for controlling the pumping of the pit 10 includes receiving a detection signal output by the liquid level detection component 120 that represents the real-time liquid level in the pit 10; such a setting is intended to detect the real-time liquid level in the pit 10, so as to determine the liquid level height according to the detection result, or to track the real-time liquid level height, so as to determine whether the height change of the real-time liquid level is an upward trend or a downward trend; so as to control the pumping pump 110 accordingly in the subsequent process;

[0043] It should also be noted that, in the present embodiment, the real-time liquid level in the pit 10 may be the real-time liquid level in the pit 10, and in the present embodiment, since the liquid level detection component 120 includes a liquid level detection tube 121, a floating member 122, a floating sensing member 123 and a liquid level tracking member 124, based on this, the detection signal representing the real-time liquid level in the pit 10 output by the liquid level detection component 120 in the present embodiment may be a liquid level signal output by detecting the real-time liquid level in the liquid level detection tube 121, and since the liquid level detection tube 121 is connected to the pit 10, the liquid level change in the pit 10 can be inferred by detecting the liquid level data in the liquid level detection tube 121;

[0044] Then, it can be known from the above content that, based on the detection signal representing the real-time liquid level in the pit 10 output by the liquid level detection component 120, the liquid level height in the liquid level detection tube 121 can be determined according to the detection result, or it is convenient to track the real-time liquid level height of the liquid level detection tube 121, so as to determine whether the height change of the real-time liquid level is an upward trend or a downward trend;

[0045] Based on this, according to actual use requirements, when the detection result of the floating member 122 is highly accurate and less affected by scale, the real-time liquid level in the pit can be compared with the preset liquid level according to the determined liquid level height in the liquid level detection tube 121; when the real-time liquid level in the pit 10 is higher than the preset liquid level, the water pump 110 is controlled to pump out the water in the pit 10 until the real-time liquid level in the pit 10 is lower than the preset liquid level or is flush with the preset liquid level;

[0046] When the detection result of the floating part 122 is greatly affected by scale, the reliability of the liquid level parameters of the floating detection is reduced. Therefore, the real-time liquid level in the puddle can be tracked to determine whether the liquid level in the pit 10 is in a rising state or a falling state; when the real-time liquid level in the pit 10 rises and is higher than the preset liquid level, the water pump 110 is controlled to pump out the water in the pit 10; when the real-time liquid level in the pit 10 drops and is lower than the preset liquid level, the water pump 110 is controlled to stop running.

[0047] Therefore, the pumping control method of the pit 10 can realize the working condition control of the water pump 110 according to the actual liquid level height according to the needs of use, or when the liquid level parameters detected by the float are greatly affected by scale, resulting in reduced reliability, in order to avoid the water pump 110 not pumping water in time or dry burning, it is possible to follow the liquid level changes to judge its changing state, and then realize the working condition control of the water pump 110. In this way, the accumulated water in the pit 10 can be discharged in time to avoid it being affected by scale, and the drainage inside the tunnel can be kept unobstructed to prevent water accumulation, thereby ensuring the safe operation of the cable and the working environment inside the tunnel, and can also avoid the water pump from continuous operation and damage due to dry burning.

[0048] Furthermore, in this embodiment, the steps of tracking the real-time liquid level in the water pit and determining whether the liquid level in the pit 10 is in a rising state or in a falling state include:

[0049] Receiving capacitance level meter (such as Figure 2 When the capacitance parameter output by the capacitive level meter increases, it is determined that the liquid level in the water pit is in a rising state; when the capacitance parameter output by the capacitive level meter decreases, it is determined that the liquid level in the water pit is in a falling state;

[0050] Or, receiving a static pressure level gauge (such as Figure 2 The signal representing the liquid level is output by the static pressure level gauge (as shown by the mark B); when the pressure parameter output by the static pressure level gauge increases, it is determined that the liquid level in the water puddle is in a rising state; when the pressure parameter output by the static pressure level gauge decreases, it is determined that the liquid level in the water puddle is in a falling state.

[0051] Therefore, through the above content, a capacitive liquid level gauge or a static pressure liquid level gauge can be set at the bottom of the liquid level detection tube 121, and then the capacitance parameters or pressure parameters of the water supply can be detected to determine whether the liquid level in the water puddle is in a rising state, or to determine whether the liquid level in the water puddle is in a falling state. Moreover, such a detection method does not need to determine the accurate value of the real-time liquid level height, but only needs to detect its changing state.

[0052] In addition, based on the above steps, after confirming that the liquid level is changing, the capacitance parameters or pressure parameters under the preset water level can be collected, and then the real-time capacitance parameters or pressure parameters can be compared with the capacitance parameters or pressure parameters under the preset water level for judgment; in addition, in actual use, when determining the preset water level, the floating sensor 123 can be set at the preset water level, and then after the floating sensor 123 senses the floating member 122, it can be determined that it is close to or at the preset water level, and then according to its changing trend, it can be determined whether the liquid level is rising or falling, thereby achieving relevant judgments.

[0053] It should be noted that, by setting the floating sensing member 123 at a preset water level, and then after the floating sensing member 123 senses the floating member 122, it can be determined that it is close to or at the preset water level, and the influence of scale on its detection can be ignored. That is, at this time, the floating sensing member 123 only needs to sense the position of the floating member 122, and does not need to calculate its actual water level height based on the sensing parameters. Therefore, the influence of scale on it can be eliminated.

[0054] Furthermore, in addition to the above-mentioned method based on setting a capacitive level meter or a static pressure level meter, the step of tracking the real-time liquid level in the water pit and determining whether the liquid level in the pit 10 is in a rising state or in a falling state in this embodiment may also include:

[0055] Receive laser ranging components (such as Figure 2 When the liquid level interval output by the laser distance measuring component decreases, it is determined that the liquid level in the water puddle is in a rising state; when the liquid level interval output by the laser distance measuring component increases, it is determined that the liquid level in the water puddle is in a falling state;

[0056] Or, receiving ultrasonic distance measuring device (such as Figure 2 The signal representing the liquid level is output by the ultrasonic ranging component (as shown by the mark D); when the liquid level interval output by the ultrasonic ranging component decreases, it is determined that the liquid level in the puddle is in a rising state; when the liquid level interval output by the ultrasonic ranging component increases, it is determined that the liquid level in the puddle is in a falling state.

[0057] Compared with the above-mentioned method of setting a capacitive liquid level gauge or a static pressure liquid level gauge, this setting method is different in terms of the setting position and the detection form of the structure, but the function achieved is to track the liquid level; therefore, on this basis, its structural principle is roughly the same as the above-mentioned structure, so it will not be repeated here.

[0058] In addition, in order to avoid dry burning, when the water pump 110 is controlled to pump out water in the pit 10, if the continuous operation time of the water pump 110 is greater than the preset time, the water pump 110 is controlled to stop running. In this way, the water pump 110 is prevented from running continuously for a long time, that is, the time length of its single continuous operation is limited.

[0059] Based on the above, please refer to Figure 1 and Figure 2 , this embodiment also provides a pit pumping control system 100, the pit pumping control system 100 includes a pumping pump 110, a liquid level detection component 120 and a control component;

[0060] The liquid level detection assembly 120 is disposed in the pit 10 and is used to detect the liquid level in the pit 10 ; the control assembly is electrically connected to the water pump 110 and the liquid level detection assembly 120 and is used to implement the above-mentioned pit 10 pumping control method.

[0061] The working principle of the pit pumping control system 100 is:

[0062] Based on the above-mentioned pit 10 pumping control method, the pit pumping control system 100 can detect the real-time liquid level in the pit 10 through the liquid level detection component 120, so as to determine the liquid level height according to the detection result, or to track the real-time liquid level height, so as to determine whether the height change of the real-time liquid level is an upward trend or a downward trend; so as to control the pumping pump 110 accordingly in the subsequent process;

[0063] It should also be noted that, in the present embodiment, the real-time liquid level in the pit 10 may be the real-time liquid level in the pit 10, and in the present embodiment, since the liquid level detection component 120 includes a liquid level detection tube 121, a floating member 122, a floating sensing member 123 and a liquid level tracking member 124, based on this, the detection signal representing the real-time liquid level in the pit 10 output by the liquid level detection component 120 may be a liquid level signal output by detecting the real-time liquid level in the liquid level detection tube 121, and since the liquid level detection tube 121 is connected to the pit 10, the liquid level change in the pit 10 can be inferred by detecting the liquid level data in the liquid level detection tube 121;

[0064] Moreover, based on the real-time liquid level in the pit 10 detected by the liquid level detection component 120, the real-time liquid level height in the liquid level detection tube 121 can be determined, or the real-time liquid level height of the liquid level detection tube 121 can be tracked to determine whether the real-time liquid level height change is in an upward trend or a downward trend;

[0065] Based on this, according to actual use requirements, when the detection result of the floating part 122 is highly accurate and less affected by scale, the real-time liquid level in the pit can be compared with the preset liquid level based on the determined liquid level height in the liquid level detection tube 121; when the real-time liquid level in the pit 10 is higher than the preset liquid level, the water pump 110 is controlled to pump out the water in the pit 10 until the real-time liquid level in the pit 10 is lower than the preset liquid level or is flush with the preset liquid level; and when the detection result of the floating part 122 is greatly affected by scale, the reliability of the liquid level parameters of the floating detection is reduced, thereby tracking the real-time liquid level in the pit and judging whether the liquid level in the pit 10 is in a rising state or in a falling state; when the real-time liquid level in the pit 10 rises and is higher than the preset liquid level, the water pump 110 is controlled to pump out the water in the pit 10; when the real-time liquid level in the pit 10 drops and is lower than the preset liquid level, the water pump 110 is controlled to stop running.

[0066] Therefore, the pit pumping control system 100 can control the working condition of the water pump 110 according to the actual liquid level height according to the needs of use, or when the liquid level parameters detected by the float are greatly affected by scale, resulting in reduced reliability, in order to avoid the water pump 110 not pumping water in time or dry burning, it can follow the liquid level changes to judge its changing state, and then control the water pump 110, so that the accumulated water in the pit 10 can be discharged in time to avoid it being affected by scale, and the drainage inside the tunnel can be kept unobstructed to prevent water accumulation, thereby ensuring the safe operation of the cable and the working environment inside the tunnel, and can also avoid the water pump from continuous operation and damage due to dry burning.

[0067] Specifically, the liquid level detection assembly 120 includes a liquid level detection tube 121, a floating member 122, a floating sensor 123 and a liquid level tracking member 124; the liquid level detection tube 121 is vertically set up in the pit 10, and its bottom end is connected to the pit 10; the floating member 122 floats in the liquid level detection tube 121, and the floating sensor 123 is used to sense the position of the floating member 122; the liquid level tracking member 124 is arranged at the bottom or top of the liquid level detection tube 121, and is used to detect the position of the floating member 122, the liquid level position of the liquid level detection tube 121 or the liquid level position in the pit 10.

[0068] During use, in order to reduce the influence of scale on the liquid level detection component 120, the inner surface of the liquid level detection tube 121 and the outer surface of the floating part 122 can be covered with an anti-scaling coating 125, and the anti-scaling coating 125 includes one or more of PTFE, epoxy resin, fluoropolymer, and silicone material.

[0069] Among them, PTFE is a material with extremely low friction coefficient and excellent chemical stability. Its non-sticky surface can improve the anti-scaling ability of the inner circumference of the liquid level detection tube 121 and the outer surface of the floating part 122; and epoxy resin: epoxy coating has good adhesion, mechanical physical properties and electrical insulation properties. It can reduce the deposition rate of wax and scale under the action of fluid, thereby reducing the amount of scale, and can be applied to the inner circumference of the liquid level detection tube 121 and the outer surface of the floating part 122 to prevent scaling.

[0070] Fluoropolymers: such as polytetrafluoroethylene (PTFE), perfluoropolyether (PFPE), etc. These materials help reduce scaling due to their low surface energy. They can form super-hydrophobic surfaces to further enhance anti-scaling performance; Silicone materials: Silicone coatings are used for anti-scaling due to their low surface energy and good chemical stability; Super-hydrophobic coatings: These coatings are prepared by combining low surface energy materials and micro-nano structures, and can provide anti-scaling protection in harsh environments; Super-hydrophobic surfaces can capture air to form air membranes, preventing or delaying the adhesion of dirt.

[0071] Please refer to Figure 1 and Figure 2 When configuring the liquid level tracking component 124, it may include a capacitive liquid level gauge or a static pressure liquid level gauge, which is arranged at the bottom end of the liquid level detection tube 121 and is used to track the liquid level in the liquid level detection tube 121 or the liquid level in the pit 10 where the liquid level detection tube 121 is installed.

[0072] It may also include a laser distance measuring device or an ultrasonic liquid level measurement device, which is disposed at the top of the liquid level detection tube 121 and is used to track the liquid level in the liquid level detection tube 121 or the liquid level in the pit 10 .

[0073] Specifically, by setting a capacitive liquid level gauge or a static pressure liquid level gauge at the bottom of the liquid level detection tube 121, it is possible to determine whether the liquid level in the water pit is in a rising state or a falling state by detecting the capacitance parameters or pressure parameters of the water supply. Moreover, such a detection method does not need to determine the accurate value of the real-time liquid level height, but only needs to detect its changing state.

[0074] The setting method of the laser distance measuring device or ultrasonic liquid level measurement is different from the above-mentioned setting method of the capacitive liquid level meter or the static pressure liquid level meter in that the setting position and the detection form of the structure are different, but the function they achieve is to track the liquid level; therefore, on this basis, its structural principle is roughly the same as the above-mentioned structure, so it will not be repeated here.

[0075] In addition, based on the above steps, after confirming that the liquid level is changing, the capacitance parameter or pressure parameter under the preset water level state can be collected, and then the real-time capacitance parameter or pressure parameter can be compared with the capacitance parameter or pressure parameter under the preset water level for judgment;

[0076] In addition, in actual use, when determining the preset water level, the floating sensor 123 can be set at the preset water level, and then after the floating sensor 123 senses the floating member 122, it can be determined that it is close to or at the preset water level, and then according to its changing trend, it can be determined whether the liquid level is rising or falling, thereby achieving relevant judgment.

[0077] It should be noted that, by setting the floating sensing member 123 at a preset water level, and then after the floating sensing member 123 senses the floating member 122, it can be determined that it is close to or at the preset water level, and the influence of scale on its detection can be ignored. That is, at this time, the floating sensing member 123 only needs to sense the position of the floating member 122, and does not need to calculate its actual water level height based on the sensing parameters. Therefore, the influence of scale on it can be eliminated.

[0078] In addition, the pit pumping control system 100 further includes a time relay, which is electrically connected to the control component and is used to count the operation of the pumping pump 110. In this way, the pumping pump 110 is prevented from running continuously for a long time, that is, the duration of its single continuous operation is limited.

[0079] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for controlling pit pumping, characterized in that: include: Receiving a detection signal output by a liquid level detection component representing a real-time liquid level in the pit; Comparing the real-time liquid level in the water pit with the preset liquid level; when the real-time liquid level in the pit is higher than the preset liquid level, controlling the water pump to pump out the water in the pit until the real-time liquid level in the pit is lower than the preset liquid level or is flush with the preset liquid level; Or, track the real-time liquid level in the water pit, and determine whether the liquid level in the pit is in a rising state or in a falling state; when the real-time liquid level in the pit rises and is higher than the preset liquid level, control the water pump to pump out the water in the pit; when the real-time liquid level in the pit drops and is lower than the preset liquid level, control the water pump to stop running.

2. The pit pumping control method according to claim 1, characterized in that: The step of tracking the real-time liquid level in the water pit and determining whether the liquid level in the pit is rising or falling comprises: receiving a signal representing the real-time liquid level output by a capacitive liquid level meter; when a capacitance parameter output by the capacitive liquid level meter increases, determining that the liquid level in the water puddle is in a rising state; and when a capacitance parameter output by the capacitive liquid level meter decreases, determining that the liquid level in the water puddle is in a falling state; Or, receive a signal representing the liquid level output by a static pressure level gauge; when the pressure parameter output by the static pressure level gauge increases, it is determined that the liquid level in the water puddle is in a rising state; when the pressure parameter output by the static pressure level gauge decreases, it is determined that the liquid level in the water puddle is in a falling state.

3. The pit pumping control method according to claim 1, characterized in that: The step of tracking the real-time liquid level in the water pit and determining whether the liquid level in the pit is rising or falling comprises: receiving a signal representing the liquid level output by the laser distance measuring component; when the liquid level interval output by the laser distance measuring component decreases, it is determined that the liquid level in the water puddle is in a rising state; when the liquid level interval output by the laser distance measuring component increases, it is determined that the liquid level in the water puddle is in a falling state; Or, receiving a signal representing the liquid level output by an ultrasonic ranging component; when the liquid level interval output by the ultrasonic ranging component decreases, it is determined that the liquid level in the puddle is in a rising state; when the liquid level interval output by the ultrasonic ranging component increases, it is determined that the liquid level in the puddle is in a falling state.

4. The pit pumping control method according to claim 1, characterized in that: When the water pump is controlled to pump out water in the pit, when the continuous operation time of the water pump is greater than a preset time, the water pump is controlled to stop running.

5. A pit pumping control system, characterized in that: The pit water pumping control system comprises a water pump, a liquid level detection component and a control component; The liquid level detection component is arranged in the pit and is used to detect the liquid level in the pit; the control component is electrically connected to the water pump and the liquid level detection component, and is used to implement the pit pumping control method as described in any one of claims 1-4.

6. The pit pumping control system according to claim 5, characterized in that: The liquid level detection assembly includes a liquid level detection tube, a floating part, a floating sensing part and a liquid level tracking part; The liquid level detection tube is vertically set up in the pit, and its bottom end is connected to the pit; the floating member is floated in the liquid level detection tube, and the floating sensing member is used to sense the position of the floating member; The liquid level tracking component is arranged at the bottom or the top of the liquid level detection tube and is used to detect the position of the floating component, the liquid level position of the liquid level detection tube or the liquid level position in the pit.

7. The pit pumping control system according to claim 6, characterized in that: The inner circumferential surface of the liquid level detection tube and the outer surface of the floating member are both covered with an anti-scaling coating, and the anti-scaling coating includes one or more of PTFE, epoxy resin, fluorine-containing polymer, and silicone material.

8. The pit pumping control system according to claim 6, characterized in that: The liquid level tracking component includes a capacitive liquid level gauge or a static pressure liquid level gauge, which is arranged at the bottom end of the liquid level detection tube and is used to track the liquid level in the liquid level detection tube or the liquid level in the pit where the liquid level detection tube is installed.

9. The pit pumping control system according to claim 6, characterized in that: The liquid level tracking component includes a laser distance measuring component or an ultrasonic liquid level measurement, and the laser distance measuring component or the ultrasonic liquid level measurement is arranged at the top of the liquid level detection tube and is used to track the liquid level in the liquid level detection tube or the liquid level in the pit.

10. The pit pumping control system according to claim 5, characterized in that: The pit water pumping control system also includes a time relay; the time relay is electrically connected to the control component, and the time relay is used to count the operation time of the water pump.

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