Submersible pump intelligent control system

Abstract

The embodiment of the present invention provides a submersible pump intelligent control system, the system includes: a bracket, a control circuit, a winch, a first sensor, a second sensor and a submersible pump, wherein the control circuit, the winch, the first sensor and the second sensor are all installed on the crossbeam of the bracket; the submersible pump is connected to the winch; the first sensor is connected to the control circuit, used to detect the water surface height signal, and transmit the water surface height signal to the control circuit; the second sensor is connected to the control circuit, used to detect the submersible pump top height signal, and transmit the submersible pump top height signal to the control circuit; the control circuit is used to control the lifting of the winch according to the received water surface height signal and the submersible pump top height signal. The system provided by the embodiment of the present invention avoids the passivity and inaccuracy of manual monitoring, reduces labor costs, and improves the efficiency of preventing siltation during the operation of the submersible pump.

Description

Technical Field

[0001] The invention relates to the technical field of anti-silting technology for submersible pumps, and in particular to an intelligent control system for submersible pumps. Background Art

[0002] Submersible pumps are important water-lifting devices that play an important role in groundwater pumping projects, farmland irrigation, factory railways, mine drainage, and construction site drainage, ensuring the normal use of urban water, the safety of people's lives and property, and the normal construction of building foundation projects. In actual construction site drainage and other engineering applications, on the one hand, there is a lot of soil and sand on the project site, and on the other hand, there are many instantaneous rainstorms in summer, which cause serious silt erosion, resulting in increased silt accumulation and burying of submersible pumps. The silt flows into the pump, making the pumping function of the pump ineffective or even damaged, causing a large amount of flooding in the foundation pit, affecting the construction progress. Siltation has become a bottleneck problem that restricts the long-term operation and efficient construction of submersible pumps. The existing submersible pump lifting frame solves this problem in the form of a stretching frame. It uses a lifting mechanism composed of a cross bar, a support rod, a support rod, a pulley, a winding shaft, a connecting rod, a pressure rod, a lifting rope, a ratchet and a ratchet to solve the problem that when a submersible pump needs to be put into the water by manpower in some workplaces without large lifting equipment, it is difficult for a single person to complete the lifting operation of the submersible pump due to its heavy weight. However, it does not completely liberate human labor, which hinders its wider promotion and application. At the same time, for various other anti-blocking submersible pumps, although the pump body is optimized from the internal structure and the sediment discharge efficiency of the submersible pump is improved, the manufacturing cost is high and it cannot be adapted to any working conditions, and it still cannot solve the problem of the submersible pump body being buried.

[0003] Therefore, how to avoid the situation in which the existing submersible pump anti-siltation device cannot free up human labor and has a high manufacturing cost, and improve the efficiency of the submersible pump anti-siltation device, is still a problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0004] The embodiment of the present invention provides an intelligent control system for a submersible pump, which is used to solve the problems of the existing anti-siltation device for submersible pumps that human labor cannot be liberated and the manufacturing cost of the device is high.

[0005] The embodiment of the present invention provides a submersible pump intelligent control system, including: a bracket, a control circuit, a winch, a first sensor, a second sensor and a submersible pump, wherein:

[0006] The control circuit, the hoist, the first sensor and the second sensor are all mounted on the crossbeam of the bracket;

[0007] The submersible pump is connected to the winch;

[0008] The first sensor is connected to the control circuit and is used to detect a water surface height signal and transmit the water surface height signal to the control circuit;

[0009] The second sensor is connected to the control circuit and is used to detect the submersible pump top height signal and transmit the submersible pump top height signal to the control circuit;

[0010] The control circuit is used to control the lifting and lowering of the winch according to the received water surface height signal and the submersible pump top height signal.

[0011] Preferably, in the system, the water surface height signal is a distance signal from the water surface to the crossbeam of the support, and the submersible pump top height signal is a distance signal from the top of the submersible pump to the crossbeam of the support.

[0012] Preferably, in the system, controlling the lifting and lowering of the winch according to the received water surface height signal and the submersible pump top height signal specifically includes:

[0013] If the difference H1-H2 between the distance H1 from the water surface to the crossbeam of the support and the distance H2 from the top of the submersible pump to the crossbeam of the support>0 and H1-H2>a first threshold, the winch is controlled to lower the submersible pump to a first preset height;

[0014] If the difference H1-H2 between the distance H1 from the water surface to the crossbeam of the support and the distance H2 from the top of the submersible pump to the crossbeam of the support is less than 0 and H2-H1>the second threshold, the winch is controlled to rise to the second preset height of the submersible pump.

[0015] Preferably, in the system, the first threshold is equal to one third of the height of the motor on the submersible pump.

[0016] Preferably, in the system, an alarm is installed at the suction port of the submersible pump, and the alarm is used to trigger the emergency stop switch of the submersible pump when the submersible pump contacts bottom mud or sucks silt.

[0017] Preferably, in the system, the alarm is a density probe or a Doppler sensor.

[0018] Preferably, in the system, the control circuit comprises an Arduino development board and a relay.

[0019] Preferably, in the system, the control circuit controls the lifting and lowering of the hoist, specifically including:

[0020] The Arduino development board controls the lifting of the winch through the relay.

[0021] Preferably, in the system, the first sensor is an ultrasonic distance sensor, and the second sensor is an ultrasonic distance sensor.

[0022] The system provided by the embodiment of the present invention detects the height of the water surface and the height of the top of the submersible pump through the sensor on the support crossbeam. The sensor sends the height of the water surface and the height of the top of the submersible pump to the control circuit. The control circuit controls the winch according to the height of the water surface and the height of the top of the submersible pump to control the lifting and lowering of the submersible pump. Therefore, the water surface height and the height of the submersible pump can be intelligently sensed and the submersible pump can be automatically lifted and lowered according to the above two heights. In this way, the system provided by the embodiment of the present invention avoids the passivity and inaccuracy of manual monitoring, reduces labor costs, and improves the efficiency of preventing siltation during the operation of the submersible pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the structure of the intelligent control system for a submersible pump provided by an embodiment of the present invention (showing water and sediment in the operating environment);

[0025] Description of reference numerals:

[0026] 1- bracket; 2- control circuit; 3- winch;

[0027] 4-first sensor; 5-second sensor; 6-submersible pump. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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. 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.

[0029] Existing anti-blocking submersible pumps generally have the problems of large labor consumption, high device cost and low operating efficiency. In view of this, an embodiment of the present invention provides an intelligent control system for a submersible pump. Figure 1 A schematic diagram of the structure of the intelligent control system for a submersible pump provided by an embodiment of the present invention (showing water and sediment in the working environment), as shown in FIG. Figure 1As shown, the system includes: a bracket 1, a control circuit 2, a winch 3, a first sensor 4, a second sensor 5 and a submersible pump 6, wherein:

[0030] The control circuit 2, the hoist 3, the first sensor 4 and the second sensor 5 are all installed on the crossbeam of the bracket 1;

[0031] The submersible pump 6 is connected to the winch 3;

[0032] The first sensor 4 is connected to the control circuit 2, and is used to detect a water surface height signal and transmit the water surface height signal to the control circuit;

[0033] The second sensor 5 is connected to the control circuit 2, and is used to detect the submersible pump top height signal, and transmit the submersible pump top height signal to the control circuit;

[0034] The control circuit 2 is used to control the lifting and lowering of the winch 3 according to the received water surface height signal and the submersible pump top height signal.

[0035] Specifically, the bracket 1 is usually constructed of metal materials, and the control circuit 2 usually includes a development board and basic electronic components that can execute a certain complexity program. The winch 3 is an existing electric lifter that can lift and lower objects connected to it that meet the weight requirements. The first sensor 4 and the second sensor 5 respectively detect the water surface height signal and the submersible pump top height signal. When the submersible pump intelligent control system is running in the operating environment, the bracket 1 is placed in the foundation pit that needs to be drained. The detected water surface height signal is the height signal of the water surface in the foundation pit that needs to be drained where the bracket 1 is located, and the submersible pump top height signal is the height signal of the submersible pump top when the submersible pump top is submerged in the water surface or exposed to the water surface. The first sensor 4 and the second sensor 5 send the height signals detected by each to the control circuit 2. The control circuit 2 determines whether the winch 3 should be controlled to rise or fall at this time according to the real-time detected water surface position and the position of the submersible pump, and controls the rise and fall of the winch 3 according to the judgment method set by the program of the development board pre-burned into the control circuit 2.

[0036] The system provided by the embodiment of the present invention detects the height of the water surface and the height of the top of the submersible pump through the sensor on the bracket beam. The sensor sends the height of the water surface and the height of the top of the submersible pump to the control circuit. The control circuit controls the winch according to the height of the water surface and the height of the top of the submersible pump to control the lifting and lowering of the submersible pump. It can continuously and accurately detect the height of the water surface and the submersible pump in real time, respond quickly, and automatically lift and lower the submersible pump in time to ensure that the suction port of the submersible pump is always in the best working position, effectively preventing siltation and burial. It also breaks the passivity and inaccuracy of manual monitoring, ensures the efficiency of the submersible pump in preventing siltation and ensures that the submersible pump works normally and is in a saturated working state.

[0037] Based on the above embodiment, in the system, the water surface height signal is a distance signal from the water surface to the crossbeam of the bracket, and the submersible pump top height signal is a distance signal from the submersible pump top to the crossbeam of the bracket.

[0038] Specifically, the water surface height signal detected by the first sensor and the second sensor and the submersible pump top height signal are distance signals from the water surface to the crossbeam of the bracket and distance signals from the top of the submersible pump to the crossbeam of the bracket.

[0039] Based on any of the above embodiments, in the system, controlling the lifting and lowering of the winch according to the received water surface height signal and the submersible pump top height signal specifically includes:

[0040] If the difference H1-H2 between the distance H1 from the water surface to the crossbeam of the support and the distance H2 from the top of the submersible pump to the crossbeam of the support>0 and H1-H2>a first threshold, the winch is controlled to lower the submersible pump to a first preset height;

[0041] If the difference H1-H2 between the distance H1 from the water surface to the crossbeam of the support and the distance H2 from the top of the submersible pump to the crossbeam of the support is less than 0 and H2-H1>the second threshold, the winch is controlled to rise to the second preset height of the submersible pump.

[0042] Specifically, after obtaining the distance from the water surface to the crossbeam of the bracket and the distance from the top of the submersible pump to the crossbeam of the bracket, the control circuit will determine whether the winch should be controlled to rise or fall at this time according to the judgment method set by the program of the development board pre-burned into the control circuit. The judgment method set by the program is to first determine the size of the distance from the water surface to the crossbeam of the bracket and the distance from the top of the submersible pump to the crossbeam of the bracket. If the distance from the water surface to the crossbeam of the bracket is greater than the distance from the top of the submersible pump to the crossbeam of the bracket, it means that the top of the submersible pump has emerged from the water. At this time, if the height of the submersible pump above the water surface is too high, there is a risk that the submersible pump cannot effectively pump water. Therefore, the height of the submersible pump above the water surface has an upper limit, that is, the first threshold. If the height of the top of the submersible pump above the water surface is greater than the first threshold, then Controlling the winch to lower the submersible pump is equivalent to controlling the winch to lower the submersible pump if the difference between the distance from the water surface to the crossbeam of the support and the distance from the top of the submersible pump to the crossbeam of the support is a positive number and the value is greater than the first threshold value. Here, the submersible pump is not lowered continuously, but only lowered to a first preset height. Usually, we set the rising and falling speed of the winch to a fixed value. Therefore, the first preset height is lowered here by controlling the winch to run forward for a first preset time, ensuring that the winch runs forward at the above-mentioned fixed speed. The first preset time is just enough to lower the first preset height; if the distance from the water surface to the crossbeam of the bracket is less than the distance from the top of the submersible pump to the crossbeam of the bracket, it means that the submersible pump has been completely submerged in water, and when the submersible pump is submerged in water and far away from the water surface, the risk of contacting the mud on the bottom of the water is greater. Therefore, there is an upper limit to the distance from the submersible pump to the water surface when it is submerged in water, that is, the second threshold value. If the distance of the submersible pump submerged in water is greater than the second threshold value, it is possible to contact the mud on the bottom of the water. Therefore, controlling the winch to lift the submersible pump is equivalent to if the submersible pump If the difference between the distance from the top to the crossbeam of the bracket and the distance from the water surface to the crossbeam of the bracket is a positive number and the value is greater than the second threshold, the winch is controlled to lift the submersible pump. Here, the submersible pump is not lifted continuously, but only lifted to the second preset height. Usually, we set the rising and falling speed of the winch to a fixed value. Therefore, the lifting to the second preset height here is achieved by controlling the winch to run in reverse for a second preset time, ensuring that the winch runs in reverse at the above-mentioned fixed speed for the second preset time just enough to lift the second preset height.

[0043] Based on any of the above embodiments, in the system, the first threshold is equal to one third of the height of the motor on the submersible pump.

[0044] Specifically, the motor of the submersible pump is located in the upper part of the submersible pump. If more than one-third of the height of the motor of the submersible pump is exposed above the water surface, the submersible pump cannot effectively pump or drain water. Therefore, the upper limit of the submersible pump exposed above the water surface when the submersible pump is operating is one-third of the height of the motor of the submersible pump, that is, the first threshold is equal to one-third of the height of the motor on the submersible pump.

[0045] Based on any of the above embodiments, in the system, an alarm is installed at the suction port of the submersible pump, and the alarm is used to trigger the emergency stop switch of the submersible pump when the submersible pump contacts bottom mud or sucks silt.

[0046] Specifically, the system also considers the alarm mechanism in case of unexpected situations, that is, an alarm is installed at the suction port of the submersible pump, and the alarm is used to trigger the emergency stop switch of the submersible pump when the submersible pump contacts the bottom silt or sucks silt. Usually, the alarm is also used to start the buzzer alarm when the submersible pump contacts the bottom silt or sucks silt, so as to protect the submersible pump in time and prompt the staff to deal with the submersible well that fails to clear the silt.

[0047] Based on any of the above embodiments, in the system, the alarm is a density probe or a Doppler sensor.

[0048] Specifically, commonly used alarms are density probes and Doppler sensors, which are used to detect silt around the suction port of a submersible pump.

[0049] Based on any of the above embodiments, in the system, the control circuit includes an Arduino development board and a relay.

[0050] Specifically, the control circuit in the system uses an Arduino development board, and the microcontroller on the development board can write a program using the Arduino programming language, compile it into a binary file, and burn it into the microcontroller. The program includes rules for determining the rise and fall of the control winch according to the received water surface height signal and the submersible pump top height signal, and these rules include various operating parameters and determination thresholds, which can be modified according to different application scenarios.

[0051] The method provided by the embodiment of the present invention includes an Arduino development board in the control circuit, and can realize adjustable system working parameters by modifying parameters and thresholds in the program, which can be widely adapted to various environments and working requirements.

[0052] Based on any of the above embodiments, in the system, the Arduino development board controls the lifting and lowering of the winch through the relay.

[0053] Based on any of the above embodiments, in the system, the first sensor is an ultrasonic distance sensor, and the second sensor is an ultrasonic distance sensor.

[0054] Specifically, using ultrasonic distance sensors as the first sensor and the second sensor here can reduce the cost of the system.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A submersible pump intelligent control system, characterized in that: include: A bracket, a control circuit, a winch, a first sensor, a second sensor and a submersible pump, wherein: The control circuit, the hoist, the first sensor and the second sensor are all mounted on the crossbeam of the bracket; The submersible pump is connected to the winch; The first sensor is connected to the control circuit and is used to detect a water surface height signal and transmit the water surface height signal to the control circuit; The second sensor is connected to the control circuit and is used to detect the submersible pump top height signal and transmit the submersible pump top height signal to the control circuit; The control circuit is used to control the lifting and lowering of the winch according to the received water surface height signal and the submersible pump top height signal; The water surface height signal is a distance signal from the water surface to the crossbeam of the support, and the submersible pump top height signal is a distance signal from the top of the submersible pump to the crossbeam of the support; The step of controlling the lifting of the winch according to the received water surface height signal and the submersible pump top height signal specifically includes: If the difference H1-H2 between the distance H1 from the water surface to the crossbeam of the support and the distance H2 from the top of the submersible pump to the crossbeam of the support>0 and H1-H2>the first threshold, the winch is controlled to lower the submersible pump to a first preset height, and the lowering to the first preset height is achieved by controlling the winch to run forward for a first preset time, ensuring that the winch runs forward at a constant speed for a first preset time just to lower the first preset height; If the difference H1-H2 between the distance H1 from the water surface to the crossbeam of the bracket and the distance H2 from the top of the submersible pump to the crossbeam of the bracket is <0 and H2-H1>the second threshold, the winch is controlled to rise to the second preset height of the submersible pump. The raising to the second preset height is achieved by controlling the winch to run in reverse for a second preset time, ensuring that the winch runs in reverse at a constant speed for the second preset time just enough to raise the submersible pump to the second preset height.

2. The submersible pump intelligent control system according to claim 1 is characterized in that: The first threshold is equal to one third of the height of the motor on the submersible pump.

3. The intelligent control system for submersible pumps according to any one of claims 1 to 2, characterized in that: An alarm is installed at the suction port of the submersible pump, and the alarm is used to trigger the emergency stop switch of the submersible pump when the submersible pump contacts bottom mud or sucks silt.

4. The submersible pump intelligent control system according to claim 3 is characterized in that: The alarm is a density probe or a Doppler sensor.

5. The submersible pump intelligent control system according to claim 4 is characterized in that: The control circuit includes an Arduino development board and a relay.

6. The submersible pump intelligent control system according to claim 5, characterized in that: The control circuit controls the lifting and lowering of the hoist, specifically including: The Arduino development board controls the lifting of the winch through the relay.

7. The intelligent control system for submersible pumps according to any one of claims 4 to 6, characterized in that: The first sensor is an ultrasonic distance sensor, and the second sensor is an ultrasonic distance sensor.

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