A control and protection system and method for submersible pumps

Abstract

The application discloses a control protection system for a submersible pump, comprising: an acquisition module, configured to acquire operation data of the submersible pump, wherein the operation data comprises liquid level data, flow data, current data and temperature data; a starting module, configured to determine whether to allow starting the submersible pump according to the liquid level data; a rotating state determination module, configured to determine a rotating abnormality level of the submersible pump according to the flow data when the submersible pump is allowed to start; determine the rotating state of the submersible pump according to the rotating abnormality level of the submersible pump; a heat determination module, configured to determine the heat of the submersible pump according to the current data and the temperature data; and a control protection module, configured to control and protect the submersible pump according to the rotating state and the heat of the submersible pump.

Description

Technical Field

[0001] This invention relates to the field of submersible pump technology, and in particular to a control and protection system and method for submersible pumps. Background Technology

[0002] Submersible pumps are essential equipment for deep well water extraction. During operation, the entire unit is submerged in water to extract groundwater to the surface. They are used for domestic water supply, mine rescue operations, industrial cooling, farmland irrigation, seawater lifting, ship ballast adjustment, and even for fountain landscaping.

[0003] Currently, the control and protection of submersible pumps are mostly achieved by configuring thermal relays for protection and setting up float switches for water level monitoring. However, this protection method is simplistic and has significant drawbacks, such as the float being prone to jamming and the thermal relay having large errors, which can easily cause the submersible pump to burn out. Summary of the Invention

[0004] The purpose of this invention is to provide a control and protection system for submersible pumps, which solves the problem of single protection methods for submersible pumps, which have significant drawbacks, such as the float ball being prone to jamming and the thermal relay having large errors, which can easily cause the submersible pump to burn out.

[0005] This invention provides a control and protection system for submersible pumps, comprising:

[0006] The acquisition module is used to acquire the operating data of the submersible pump, including liquid level data, flow rate data, current data and temperature data;

[0007] A startup module, used to determine whether to allow the submersible pump to be started based on the liquid level data;

[0008] A rotation status determination module is used to determine the rotation abnormality level of the submersible pump based on the flow data when the submersible pump is allowed to start; and to determine the rotation status of the submersible pump based on the rotation abnormality level.

[0009] A heat determination module is used to determine the heat of the submersible pump based on the current data and the temperature data.

[0010] A control and protection module is provided to control and protect the submersible pump based on its rotation status and heat.

[0011] In some embodiments of this application, the acquisition module includes:

[0012] A liquid level sensor is installed on the submersible pump and is used to detect the real-time liquid level value at the location of the submersible pump.

[0013] A flow sensor is provided at the outlet of the submersible pump and is used to detect the liquid flow rate of the submersible pump.

[0014] A current sensor is disposed on the submersible pump and is used to detect the operating current value of the submersible pump;

[0015] A temperature sensor is installed at the inlet and outlet of the submersible pump, and the temperature sensor is used to detect the inlet water temperature and outlet water temperature of the submersible pump.

[0016] In some embodiments of this application, determining whether to allow the submersible pump to be started based on the liquid level data includes:

[0017] The real-time liquid level value of the submersible pump is compared with the target liquid level value, and the decision on whether to start the submersible pump is made based on the comparison result.

[0018] If the real-time liquid level value reaches the target liquid level value, the submersible pump is allowed to be started;

[0019] If the real-time liquid level is lower than the target liquid level, the submersible pump is not allowed to be started.

[0020] In some embodiments of this application, determining the level of rotational abnormality of the submersible pump based on the flow rate data includes:

[0021] Determine the flow difference between the liquid flow rate value and the rated flow rate value, and determine the abnormal rotation level of the submersible pump based on the flow difference;

[0022] The rotation state determination module has a first flow difference interval (0, A1), a second flow difference interval (A1, A2), a third flow difference interval (A2, A3), and a fourth flow difference interval (A3, A4), where A1 < A2 < A3 < A4.

[0023] There are four preset rotational abnormality levels: a first preset rotational abnormality level L1, a second preset rotational abnormality level L2, a third preset rotational abnormality level L3, and a fourth preset rotational abnormality level L4, where L1 < L2 < L3 < L4.

[0024] Determine the flow difference 'a' between the liquid flow rate value and the rated flow rate value, and set the rotation abnormality level of the submersible pump based on the flow difference 'a'.

[0025] When the flow difference a is within the first flow difference range (0, A1), the rotation abnormality level of the submersible pump is the first preset rotation abnormality level L1.

[0026] When the flow difference a is within the second flow difference range (A1, A2), the rotation abnormality level of the submersible pump is the second preset rotation abnormality level L2.

[0027] When the flow difference a is in the third flow difference range (A2, A3), the rotation abnormality level of the submersible pump is the third preset rotation abnormality level L3.

[0028] When the flow difference a is in the fourth flow difference range (A3, A4), the rotation abnormality level of the submersible pump is the fourth preset rotation abnormality level L4.

[0029] In some embodiments of this application, determining the rotation state of the submersible pump based on the level of rotational abnormality includes:

[0030] When the abnormal rotation level of the submersible pump is lower than the set abnormal rotation level, the submersible pump is judged to be rotating normally.

[0031] When the abnormal rotation level of the submersible pump is higher than the set abnormal rotation level, the submersible pump is determined to be in a stalled state.

[0032] In some embodiments of this application, determining the heat of the submersible pump based on the current data and the temperature data includes:

[0033] The initial heat of the submersible pump is determined based on the current data and the basic parameter data of the submersible pump.

[0034] Based on the flow rate data, the heat released by the submersible pump is determined according to the temperature data;

[0035] The heat of the submersible pump is determined based on the initial heat and the released heat.

[0036] In some embodiments of this application, the initial heat of the submersible pump is calculated according to the following formula:

[0037] Q1 = I 2 RT

[0038] Where Q1 is the initial heat of the submersible pump, I is the operating current of the submersible pump, R is the resistance of the submersible pump, and T is the operating time of the submersible pump.

[0039] In some embodiments of this application, the heat released by the submersible pump is calculated according to the following formula:

[0040] Q2=ρGC(t2-t1)T

[0041] Where Q2 is the heat released by the submersible pump, ρ is the density of the liquid pumped by the submersible pump, G is the liquid flow rate of the pumped liquid, C is the specific heat capacity of the pumped liquid, t2 is the outlet temperature of the liquid pumped by the submersible pump, t1 is the inlet temperature of the liquid pumped by the submersible pump, and T is the operating time of the submersible pump.

[0042] In some embodiments of this application, the heat of the submersible pump is determined according to the following formula:

[0043] Q0 = Q1 - Q2 = I 2 RT-ρGC(t2-y1)T

[0044] Where Q0 represents the heat generated by the submersible pump.

[0045] A control and protection method for a submersible pump includes:

[0046] Obtain the liquid level data of the submersible pump, and determine whether the submersible pump can be started based on the liquid level data;

[0047] When the submersible pump is allowed to start, acquire the flow rate data of the submersible pump, and determine the level of abnormal rotation of the submersible pump based on the flow rate data;

[0048] The rotation status of the submersible pump is determined based on the level of rotational abnormality of the submersible pump.

[0049] Acquire current and temperature data of the submersible pump, and determine the heat of the submersible pump based on the current and temperature data;

[0050] The submersible pump is controlled and protected based on its rotation status and heat.

[0051] This project mainly studies a protection controller with reliable water level measurement sensor, flow measurement sensor, and heat accumulation detection function. It can determine whether there are foreign objects in the water pump based on the water flow rate, determine whether it is allowed to start based on the water level, and perform heat accumulation calculation based on real-time current and water level. The design is based on the comprehensive operating environment of the submersible pump.

[0052] This invention provides a control and protection system for a submersible pump, comprising: an acquisition module for acquiring operating data of the submersible pump, the operating data including liquid level data, flow rate data, current data, and temperature data; a start-up module for determining whether starting the submersible pump is permitted based on the liquid level data; a rotation state determination module for determining the rotation abnormality level of the submersible pump based on the flow rate data when starting the submersible pump is permitted, and determining the rotation state of the submersible pump based on the rotation abnormality level; a heat determination module for determining the heat of the submersible pump based on the current data and the temperature data; and a control and protection module for controlling and protecting the submersible pump based on its rotation state and heat.

[0053] This invention uses a liquid level sensor to detect the liquid level at the location of the submersible pump and determines whether the submersible pump can be started based on the liquid level, ensuring the working conditions of the submersible pump; it uses a flow sensor to detect the liquid flow rate of the submersible pump to determine whether the submersible pump is operating normally, avoiding blockage caused by foreign objects in the submersible pump; and it also assesses the heat of the submersible pump and controls and protects the submersible pump to prevent it from burning out.

[0054] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0055] Figure 1 This is a functional block diagram of a control and protection system for a submersible pump according to the present invention;

[0056] Figure 2 This is a schematic flowchart of a control and protection method for a submersible pump according to the present invention. Detailed Implementation

[0057] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0058] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used herein have the ordinary meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0059] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments of the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof, without excluding other elements or objects. The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "side," and "bottom," indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are merely relational terms determined for the convenience of describing the structural relationships of the various components or elements of the present invention, and do not specifically refer to any component or element in the invention, nor should they be construed as limiting the invention. Terms such as "fixed," "connected," and "linked," etc., should be interpreted broadly, indicating that it can be a fixed connection, an integral connection, or a detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. For researchers or technicians in the field, the specific meaning of the above terms in this invention can be determined according to the specific circumstances, and they should not be construed as limitations on this invention.

[0060] Example

[0061] This invention provides a control and protection system for submersible pumps, such as... Figure 1 As shown, it includes:

[0062] The acquisition module is used to acquire the operating data of the submersible pump, including liquid level data, flow rate data, current data and temperature data.

[0063] A startup module, used to determine whether to allow the submersible pump to be started based on the liquid level data;

[0064] A rotation status determination module is used to determine the rotation abnormality level of the submersible pump based on the flow data when the submersible pump is allowed to start; and to determine the rotation status of the submersible pump based on the rotation abnormality level.

[0065] A heat determination module is used to determine the heat of the submersible pump based on the current data and the temperature data.

[0066] A control and protection module is provided to control and protect the submersible pump based on its rotation status and heat.

[0067] In some embodiments of this application, the acquisition module includes:

[0068] A liquid level sensor is installed on the submersible pump and is used to detect the real-time liquid level at the location of the submersible pump.

[0069] A flow sensor is disposed at the outlet of the submersible pump and is used to detect the liquid flow rate of the submersible pump.

[0070] A current sensor is installed on the submersible pump and is used to detect the operating current value of the submersible pump.

[0071] A temperature sensor is installed at the inlet and outlet of the submersible pump, and the temperature sensor is used to detect the inlet water temperature and outlet water temperature of the submersible pump.

[0072] In this embodiment, multiple sensors are set up to ensure that various operating data of the submersible pump are detected, providing a basis for subsequent control and protection of the submersible pump.

[0073] In some embodiments of this application, determining whether to allow the submersible pump to be started based on the liquid level data includes:

[0074] The real-time liquid level value of the submersible pump is compared with the target liquid level value, and the decision on whether to start the submersible pump is made based on the comparison result.

[0075] If the real-time liquid level reaches the target liquid level, the submersible pump is allowed to be started.

[0076] If the real-time liquid level is lower than the target liquid level, the submersible pump is not allowed to be started.

[0077] In this embodiment, a submersible pump is a mechanical device that transports liquid to a certain elevation or distance, typically consisting of a motor, a pump core, and a delivery pipeline. The working principle of a submersible pump is to use the power of the motor to drive the pump core to rotate, thereby creating negative pressure, drawing water or other liquids into the pump body, and then transporting them to the target location through the delivery pipeline. When starting a submersible pump, if the water level is too low, air may be drawn in, disrupting the pump's normal operation, potentially preventing it from pumping water, and causing wear on the rubber bearings. Furthermore, when the water level at the pump's inlet is low, water can easily enter the pump body, leading to rust and corrosion of internal metal components, thus affecting the pump's lifespan. During operation, the submersible pump requires a large amount of cooling water to lower its temperature; however, when the water level is too low, the amount of cooling water decreases, causing the pump to overheat. Prolonged operation at high temperatures can easily damage pump components, and in severe cases, may even cause the pump body to burst. Therefore, the starting water level must be higher than the top of the submersible pump to ensure the motor is cooled in a cool underwater environment; otherwise, prolonged operation will burn out the machine.

[0078] In some embodiments of this application, a specific method for determining the rotational anomaly level of a submersible pump is disclosed, which, based on the flow rate data, determines the rotational anomaly level of the submersible pump, including:

[0079] Determine the flow rate difference between the liquid flow rate value and the rated flow rate value, and determine the abnormal rotation level of the submersible pump based on the flow rate difference.

[0080] The rotation state determination module has a first flow difference interval (0, A1), a second flow difference interval (A1, A2), a third flow difference interval (A2, A3), and a fourth flow difference interval (A3, A4), where A1 < A2 < A3 < A4.

[0081] There are four preset rotational abnormality levels: a first preset rotational abnormality level L1, a second preset rotational abnormality level L2, a third preset rotational abnormality level L3, and a fourth preset rotational abnormality level L4, where L1 < L2 < L3 < L4.

[0082] Determine the flow difference 'a' between the liquid flow rate value and the rated flow rate value, and set the rotational abnormality level of the submersible pump based on the flow difference 'a'.

[0083] When the flow difference a is within the first flow difference range (0, A1), the rotation abnormality level of the submersible pump is the first preset rotation abnormality level L1.

[0084] When the flow difference a is within the second flow difference range (A1, A2), the rotation abnormality level of the submersible pump is the second preset rotation abnormality level L2.

[0085] When the flow difference a is in the third flow difference range (A2, A3), the rotation abnormality level of the submersible pump is the third preset rotation abnormality level L3.

[0086] When the flow difference a is in the fourth flow difference range (A3, A4), the rotation abnormality level of the submersible pump is the fourth preset rotation abnormality level L4.

[0087] In some embodiments of this application, determining the rotation state of the submersible pump based on the level of rotational abnormality includes:

[0088] When the abnormal rotation level of the submersible pump is lower than the set abnormal rotation level, the submersible pump is judged to be rotating normally.

[0089] When the abnormal rotation level of the submersible pump is higher than the set abnormal rotation level, the submersible pump is determined to be in a stalled state.

[0090] In this embodiment, foreign objects in the water can affect the water pump. These include blockage of the pump's inlet pipe, preventing normal operation; impeller or bearing jamming, causing damage; and motor rotor jamming, preventing normal motor operation. Therefore, when a submersible pump stalls, it is crucial to promptly remove any foreign objects from inside the pump.

[0091] In some embodiments of this application, determining the heat of the submersible pump based on the current data and the temperature data includes:

[0092] The initial heat of the submersible pump is determined based on the current data and the basic parameter data of the submersible pump.

[0093] Based on the flow rate data, the heat released by the submersible pump is determined according to the temperature data.

[0094] The heat of the submersible pump is determined based on the initial heat and the released heat.

[0095] In this embodiment, the water pump generates heat during operation due to the motor's drive. If this heat cannot be effectively dissipated, it will negatively impact the system. A significant effect is a rise in water temperature, directly affecting the water's performance and lifespan. Furthermore, if the heat generated by the pump cannot be dissipated promptly, it will affect the overall system's operating temperature and may even lead to safety accidents. However, the submersible pump also transfers heat from the pump to the water during operation; therefore, the submersible pump's heat output is determined based on its initial heat and released heat.

[0096] In some embodiments of this application, the initial heat of the submersible pump is calculated according to the following formula:

[0097] Q1 = I 2 RT

[0098] Where Q1 is the initial heat of the submersible pump, I is the operating current of the submersible pump, R is the resistance of the submersible pump, and T is the operating time of the submersible pump.

[0099] In some embodiments of this application, the heat released by the submersible pump is calculated according to the following formula:

[0100] Q2=ρGC(t2-t1)T

[0101] Where Q2 is the heat released by the submersible pump, ρ is the density of the liquid pumped by the submersible pump, G is the liquid flow rate of the pumped liquid, C is the specific heat capacity of the pumped liquid, t2 is the outlet temperature of the liquid pumped by the submersible pump, t1 is the inlet temperature of the liquid pumped by the submersible pump, and T is the operating time of the submersible pump.

[0102] In some embodiments of this application, the heat of the submersible pump is determined according to the following formula:

[0103] Q0 = Q1 - Q2 = I 2 RT-ρGC(t2-t1)T

[0104] Where Q0 represents the heat generated by the submersible pump.

[0105] This invention also discloses a control and protection method for submersible pumps, wherein the method is implemented using the aforementioned control and protection system for submersible pumps, such as... Figure 2 As shown, it includes:

[0106] S1, acquire the liquid level data of the submersible pump, and determine whether to allow the submersible pump to be started based on the liquid level data.

[0107] S2, when the submersible pump is allowed to start, acquire the flow rate data of the submersible pump, and determine the abnormal rotation level of the submersible pump based on the flow rate data.

[0108] S3, determine the rotation status of the submersible pump based on the level of rotational abnormality of the submersible pump.

[0109] S4, acquire the current data and temperature data of the submersible pump, and determine the heat of the submersible pump based on the current data and temperature data.

[0110] S5, control and protect the submersible pump according to its rotation status and heat.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

[0112] The system provided in the above embodiments is only illustrated by the division of the above functional modules. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the modules or steps in the embodiments of the present invention can be further decomposed or combined. For example, the modules in the above embodiments can be merged into one module, or further divided into multiple sub-modules to complete all or part of the functions described above. The names of the modules and steps involved in the embodiments of the present invention are only for distinguishing the various modules or steps and are not considered as an improper limitation of the present invention.

[0113] Those skilled in the art will recognize that the modules and method steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. The programs corresponding to the software modules and method steps can be placed in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disks, removable disks, CD-ROMs, or any other form of storage medium known in the art. To clearly illustrate the interchangeability of electronic hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in electronic hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the invention.

Claims

1. A control and protection system for a submersible pump, characterized in that, include: The acquisition module is used to acquire the operating data of the submersible pump, including liquid level data, flow rate data, current data and temperature data; A startup module, used to determine whether to allow the submersible pump to be started based on the liquid level data; A rotation status determination module is used to determine the rotation abnormality level of the submersible pump based on the flow data when the submersible pump is allowed to start; and to determine the rotation status of the submersible pump based on the rotation abnormality level. A heat determination module is used to determine the heat of the submersible pump based on the current data and the temperature data. A control and protection module is used to control and protect the submersible pump based on its rotation state and heat. The acquisition module includes: A liquid level sensor is installed on the submersible pump and is used to detect the real-time liquid level value at the location of the submersible pump. A flow sensor is provided at the outlet of the submersible pump and is used to detect the liquid flow rate of the submersible pump. A current sensor is disposed on the submersible pump and is used to detect the operating current value of the submersible pump; A temperature sensor is installed at the inlet and outlet of the submersible pump, and the temperature sensor is used to detect the inlet water temperature and outlet water temperature of the submersible pump.

2. The control and protection system for a submersible pump according to claim 1, characterized in that, Determining whether to allow the submersible pump to be started based on the liquid level data includes: The real-time liquid level value of the submersible pump is compared with the target liquid level value, and the decision on whether to start the submersible pump is made based on the comparison result. If the real-time liquid level value reaches the target liquid level value, the submersible pump is allowed to be started; If the real-time liquid level is lower than the target liquid level, the submersible pump is not allowed to be started.

3. The control and protection system for a submersible pump according to claim 1, characterized in that, The level of abnormal rotation of the submersible pump is determined based on the flow data, including: Determine the flow difference between the liquid flow rate value and the rated flow rate value, and determine the abnormal rotation level of the submersible pump based on the flow difference; The rotation state determination module has a first flow difference interval (0, A1), a second flow difference interval (A1, A2), a third flow difference interval (A2, A3), and a fourth flow difference interval (A3, A4), where A1 < A2 < A3 < A4. There are four preset rotational abnormality levels: a first preset rotational abnormality level L1, a second preset rotational abnormality level L2, a third preset rotational abnormality level L3, and a fourth preset rotational abnormality level L4, where L1 < L2 < L3 < L4. Determine the flow difference 'a' between the liquid flow rate value and the rated flow rate value, and set the rotation abnormality level of the submersible pump based on the flow difference 'a'. When the flow difference a is in the first flow difference range (0, A1), the rotation abnormality level of the submersible pump is the first preset rotation abnormality level L1. When the flow difference a is within the second flow difference range (A1, A2), the rotation abnormality level of the submersible pump is the second preset rotation abnormality level L2. When the flow difference a is in the third flow difference range (A2, A3), the rotation abnormality level of the submersible pump is the third preset rotation abnormality level L3. When the flow difference a is in the fourth flow difference range (A3, A4), the rotation abnormality level of the submersible pump is the fourth preset rotation abnormality level L4.

4. The control and protection system for a submersible pump according to claim 3, characterized in that, Determining the rotation status of the submersible pump based on its rotation anomaly level includes: When the abnormal rotation level of the submersible pump is lower than the set abnormal rotation level, the submersible pump is judged to be rotating normally. When the abnormal rotation level of the submersible pump is higher than the set abnormal rotation level, the submersible pump is determined to be in a stalled state.

5. A control and protection system for a submersible pump according to claim 1, characterized in that, Determining the heat of the submersible pump based on the current data and the temperature data includes: The initial heat of the submersible pump is determined based on the current data and the basic parameter data of the submersible pump. Based on the flow rate data, the heat released by the submersible pump is determined according to the temperature data; The heat of the submersible pump is determined based on the initial heat and the released heat.

6. A control and protection system for a submersible pump according to claim 5, characterized in that, The initial heat of the submersible pump is calculated according to the following formula: in, The initial heat of the submersible pump, This is the operating current value of the submersible pump. This represents the resistance value of the submersible pump. This refers to the operating time of the submersible pump.

7. A control and protection system for a submersible pump according to claim 6, characterized in that, The heat released by the submersible pump is calculated according to the following formula: in, For the heat released by the submersible pump, The density of the liquid pumped by the submersible pump. To obtain the liquid flow rate value of the extracted liquid, To extract the specific heat capacity of the liquid, This refers to the outlet temperature of the liquid extracted by the submersible pump. This refers to the inlet water temperature value for the liquid pumped by the submersible pump. This refers to the operating time of the submersible pump.

8. A control and protection system for a submersible pump according to claim 7, characterized in that, The heat capacity of the submersible pump is determined according to the following formula: in, This is for the heat generated by the submersible pump.

9. A control and protection method for a submersible pump, characterized in that, include: Obtain the liquid level data of the submersible pump, and determine whether the submersible pump can be started based on the liquid level data; When the submersible pump is allowed to start, acquire the flow rate data of the submersible pump, and determine the level of abnormal rotation of the submersible pump based on the flow rate data; The rotation status of the submersible pump is determined based on the level of rotational abnormality of the submersible pump. Acquire current and temperature data of the submersible pump, and determine the heat of the submersible pump based on the current and temperature data; The submersible pump is controlled and protected based on its rotation status and heat. Detect the real-time liquid level at the location of the submersible pump; Detect the liquid flow rate of the submersible pump; Detect the operating current value of the submersible pump; The inlet and outlet water temperatures of the submersible pump are measured.

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