A vector water supply device equipped with a pump control pump unit

Abstract

This utility model discloses a vector water supply device equipped with a pump control unit, relating to the field of water supply equipment technology. It includes a water pump module, a pressure stabilizing tank, a first pressure sensor, and a control cabinet module. The water pump module comprises multiple vector variable frequency pumps, each with its inlet connected to a water tank for water supply. The outlets of these pumps are connected in parallel to a common outlet manifold. Each pump integrates a variable frequency drive board, a PLC control board, and a status sensor. The pressure stabilizing tank is connected in parallel between the inlet and outlet of the water pump module, and an electrically controlled valve is installed on the delivery pipeline. The first pressure sensor is installed on the outlet manifold. This utility model employs distributed control, improving product reliability and reducing operating costs. It allows for monitoring of the equipment's operating status, preventing prolonged operation in a faulty state and reducing maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of water supply equipment technology, and more specifically, to a vector water supply equipment equipped with a pump control pump group. Background Technology

[0002] Water supply equipment is an automated water supply device used to transport flow and maintain head. It is mainly used in four major areas: fire protection, domestic water supply, industrial water supply, and wastewater treatment, covering high-rise buildings, industrial and mining enterprises, and municipal applications. However, existing water supply equipment has the following shortcomings:

[0003] ① High energy consumption: Traditional water supply methods, such as using water towers, elevated water tanks for water supply regulation, or using constant speed pumps, involve the motor always running at a fixed speed. Regardless of water consumption, the pump can only operate at its rated power, resulting in energy waste. For example, during off-peak water usage periods, the pump still runs at full speed, consuming a large amount of electricity.

[0004] ② Unstable water supply pressure: Traditional water supply methods cannot adjust the water supply pressure in real time according to changes in actual water consumption, resulting in large fluctuations in water supply pressure. During peak water consumption periods, insufficient water pressure may occur; while during off-peak water consumption periods, the water pressure may be too high, affecting the normal use and lifespan of water-using equipment.

[0005] ③ Inconvenient control: For complex water supply systems, traditional control methods are difficult to achieve precise control and remote monitoring of water pumps, and cannot be adjusted in a timely manner according to water demand, resulting in low water supply efficiency.

[0006] ④ High degree of reliance on centralized control: The control logic of existing secondary water supply equipment (constant pressure water supply, pump addition / reduction, sleep / wake-up, rotating pump, manual / automatic operation, outlet pressure detection, etc.) is all completed by the PLC in the control system. If the PLC fails, the entire equipment must stop operating.

[0007] ⑤ Redundancy configuration: Nowadays, water pump frequency conversion control is mostly one-to-one, which means that the control cabinet module needs to house the same number of frequency converters as the water pump. When the power and number of frequency converters increase, the size of the control cabinet module increases.

[0008] ⑥ Difficulty in monitoring operational quality: As the operating time of the water pump increases, the failure rate increases, and abnormal noise and vibration occur.

[0009] Therefore, we continue to develop a water supply equipment with low operating costs, high reliability, and stable water pressure. Utility Model Content

[0010] The purpose of this utility model is to provide a vector water supply device equipped with a pump control pump group, which adopts distributed control, improves the reliability of the product, has low operating costs, and can monitor the operating status of the equipment, thereby preventing the equipment from operating in a faulty state for a long time and reducing the maintenance cost of the equipment.

[0011] To achieve the purpose of this utility model, the technical solution adopted is: a vector water supply device equipped with a pump control pump group, comprising:

[0012] The water pump module includes multiple vector variable frequency pumps. The inlet of each vector variable frequency pump is connected to a water tank for water supply, and the outlets of the multiple vector variable frequency pumps are connected in parallel to a water collection pipe. Each vector variable frequency pump integrates a variable frequency drive board, a PLC control board, and a status sensor. For each vector variable frequency pump, the output of the status sensor is connected to the input of the PLC control board, the output of the PLC control board is connected to the input of the variable frequency drive board, and the output of the variable frequency drive board is connected to the motor of the vector variable frequency pump.

[0013] A pressure stabilizing compensation tank is connected in parallel between the inlet end and the outlet end of the water pump module, and an electrically controlled valve is installed on the delivery pipeline.

[0014] The first pressure sensor is installed on the outlet water collection pipe;

[0015] The control cabinet module and the PLC control board are bidirectionally electrically connected. The output end of the first pressure sensor is electrically connected to the input end of the control cabinet module, and the output end of the control cabinet module is electrically connected to the electrically controlled valve.

[0016] Furthermore, the detection status sensor includes a vibration sensor for detecting the vibration of the vector frequency converter pump and a temperature sensor for detecting the internal temperature of the vector frequency converter pump.

[0017] Furthermore, the PLC control boards on multiple vector frequency converter pumps are bidirectionally connected to the control cabinet module.

[0018] Furthermore, the PLC control boards on multiple vector frequency converter pumps are bidirectionally connected, and the PLC control board on one of the vector frequency converter pumps is bidirectionally connected to the control cabinet module.

[0019] Furthermore, the pressure stabilizing compensation tank is connected to the inlet end of the water pump module via a first conveying pipeline, and the pressure stabilizing compensation tank is connected to the outlet water collection pipe via a second conveying pipeline, with electrically controlled valves installed on the first and second conveying pipelines respectively.

[0020] Furthermore, a pressure switch and a digital pressure gauge are also installed on the water outlet manifold, and there are at least two first pressure sensors on the water outlet manifold.

[0021] Furthermore, a second pressure sensor is installed at the outlet end of the vector frequency converter pump, and the output end of the second pressure sensor is connected to the input end of the PLC control board.

[0022] Furthermore, the water tank and the water pump module are connected by an inlet manifold, and an overflow pipe is also installed on the upper part of the water tank, which is connected to the inlet manifold.

[0023] Furthermore, the water tank is also equipped with a high liquid level sensor and a low liquid level sensor, and the output terminals of both the high liquid level sensor and the low liquid level sensor are electrically connected to the input terminal of the control cabinet module.

[0024] Furthermore, it also includes an alarm module, the input of which is electrically connected to the output of the control cabinet module.

[0025] The beneficial effects of this utility model are:

[0026] 1. Safe and reliable

[0027] Distributed redundancy control: Each vector frequency converter pump integrates a frequency converter drive board and a PLC control board, and the PLC control board is bidirectionally electrically connected to the control cabinet module, enabling the water supply equipment to autonomously complete the control of adding pumps, reducing pumps, timed pump rotation, and fault switching. When one of the vector frequency converter pumps or the system fails, the remaining pump group automatically switches to the main unit to achieve uninterrupted operation.

[0028] Sensor redundancy: Two primary pressure sensors are installed on the outlet water collection pipe as backups for each other. During normal operation, if one of the primary sensors malfunctions or fails, the system should be able to automatically bypass the malfunctioning primary sensor and activate the other primary sensor to ensure the normal operation of the water supply equipment.

[0029] Vibration displacement detection: Vibration sensors detect the vibration parameters of the vector frequency converter pump, and potential problems are detected in advance when the preset vibration alarm parameters are reached, effectively extending the service life of the vector frequency converter pump.

[0030] Low temperature protection function: The temperature sensor automatically detects the ambient temperature inside the vector frequency converter pump. When the set parameters are reached, the vector frequency converter pump will automatically run at a low frequency to prevent the vector frequency converter pump from freezing.

[0031] 2. High efficiency and energy saving

[0032] Vector control: Vector regulation is applied to the current and voltage of the motor in the vector variable frequency pump, ultimately achieving precise control of parameters such as motor speed and torque, which has advantages such as high efficiency, energy saving, and noise reduction.

[0033] Optimal efficiency wheel parameter algorithm: The number of vector variable frequency pumps in operation is reasonably allocated according to the rated power and actual power to ensure that all vector variable frequency pumps operate in the high efficiency range.

[0034] Low-flow pressure-maintaining technology: By setting up a pressure-stabilizing compensation tank, when the water supply pressure at the municipal end and the user end is sufficient, the pressure-stabilizing compensation tank stores water and energy; when the user's water consumption is low or at night, the vector frequency converter pump remains dormant and automatically switches to the pressure-stabilizing compensation tank for water supply.

[0035] Time-segmented water supply mode: The water supply equipment can also be set with multiple operating time periods. Within each time period, the set pressure can be set so that the water supply equipment can automatically adjust the operating pressure. Attached Figure Description

[0036] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification.

[0037] Figure 1 This is a system diagram of a vector water supply system equipped with a pump control unit;

[0038] Figure 2 This is a control system diagram of a vector water supply system equipped with a pump control unit.

[0039] The attached diagram shows the markings and corresponding component names:

[0040] 1. Water tank; 2. Pressure stabilizing and compensating tank; 3. Vector frequency converter pump; 4. Inlet manifold; 5. Outlet manifold; 6. Delivery pipeline one; 7. Delivery pipeline two; 8. First pressure sensor; 9. Pressure switch; 10. Digital pressure gauge; 11. Electrically controlled valve; 12. Control cabinet module; 13. Overflow pipeline; 14. Low liquid level sensor; 15. High liquid level sensor; 16. Alarm module.

[0041] 31. PLC control board; 32. Variable frequency drive board; 33. Vibration sensor; 34. Temperature sensor; 35. Second pressure sensor; 36. Motor. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present invention are shown in the accompanying drawings.

[0043] It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0044] like Figure 1 , Figure 2 As shown, this utility model provides a vector water supply device equipped with a pump control pump unit, including a water pump module, a pressure stabilizing compensation tank 2, a first pressure sensor 8, and a control cabinet module 12. The water pump module is used to pump water from the water tank 1 to the user end, and can also pump water from the water tank 1 to the pressure stabilizing compensation tank 2. The pressure stabilizing compensation tank 2 is used to compensate for insufficient municipal water supply pressure and can also directly supply water to the user end when water consumption is low. It should be noted that the water tank 1 is a water storage device connected to the municipal water supply pipeline, and the structure of the water tank 1 is consistent with existing water tank structures, including a flange-type manhole and an air filter.

[0045] The water pump module includes multiple vector variable frequency pumps 3 connected in parallel. That is, the inlet ends of the multiple vector variable frequency pumps 3 are connected together, and the outlet ends of the multiple vector variable frequency pumps 3 are connected together. During installation, an inlet manifold 4 is installed at the inlet end of the water pump module. The inlet manifold 4 is connected to the water tank 1, so that the water in the water tank 1 can enter each vector variable frequency pump 3 through the inlet manifold 4 and be delivered out by each vector variable frequency pump 3. An outlet manifold 5 is installed at the inlet end of the water pump module, so that the water delivered by each vector variable frequency pump 3 can enter the outlet manifold 5, and the outlet end of the outlet manifold 5 is connected to the water user end.

[0046] Each vector frequency converter pump 3 integrates a frequency converter drive board 32, a PLC control board 31, and a status sensor. The status sensor detects the operating status of the vector frequency converter pump 3, such as vibration frequency and operating temperature. In each vector frequency converter pump 3, the output of the PLC control board 31 is connected to the input of the frequency converter drive board 32, and the output of the frequency converter drive board 32 is connected to the motor 36 of the vector frequency converter pump 3. The output of the status sensor is connected to the input of the PLC control board 31, allowing the PLC control board 31 to send a target pressure to the frequency converter drive board 32. The frequency converter drive board 32 adjusts the operating frequency of the motor 36 in the vector frequency converter pump 3 according to the received target pressure. Simultaneously, the status sensor transmits the detected operating status of the vector frequency converter pump 3 to the PLC control board 31. Here, the frequency converter drive board 32 is model WD-4T, and the PLC control board 31 is model easy320.

[0047] Meanwhile, the outlet of the pressure stabilizing tank 2 is connected to the inlet and outlet of the water pump module, respectively. Specifically, the outlet of the pressure stabilizing tank 2 is connected to the inlet of the water pump module via a first conveying pipeline 6, and the outlet of the pressure stabilizing tank 2 is connected to the outlet of the water pump module via a second conveying pipeline 7. Electrically controlled valves 11 are installed on both the first and second conveying pipelines 6 and 7. These valves 11 are solenoid valves, and their inputs are connected to the output of the control cabinet module 12, which is model WPK. Firstly, the water in the pressure stabilizing tank 2 can be combined with the water in the inlet manifold 4 and then pumped to the outlet manifold 5 by the vector frequency converter pump 3 to supply the user. Secondly, the water in the inlet manifold 4 is pumped by the vector frequency converter pump 3 to the pressure stabilizing tank 2 for storage. Thirdly, the water in the pressure stabilizing tank 2 can also be pumped to the outlet manifold 5 to supply the user. That is, the pressure stabilizing compensation tank 2 can supply water to the user end in conjunction with the water supply pressure of the water tank 1, and the pressure stabilizing compensation tank 2 can also supply water to the user end independently.

[0048] The first pressure sensor 8 is installed on the water outlet manifold 5. The output end of the first pressure sensor 8 is connected to the control cabinet module 12. The first pressure sensor 8 is used to detect the water flow pressure in the water outlet manifold 5 and transmit the detected water flow pressure signal to the control cabinet module 12, thereby knowing the water flow pressure going to the user end.

[0049] In use, the PLC control board 31 is bidirectionally electrically connected to the control cabinet module 12. The PLC control board 31 transmits the operating status of the vector frequency converter pump 3, which is detected by the status sensor, to the control cabinet module 12. At the same time, the control cabinet module 12 can also send control parameters to the PLC control board 31, such as: water flow pressure parameters to the user end, operating status parameters of the vector frequency converter pump 3, operating time of the vector frequency converter pump 3, operating frequency of the vector frequency converter pump 3 during the corresponding time period, vibration parameters of the vector frequency converter pump 3, and temperature parameters of the vector frequency converter pump 3.

[0050] In this invention, the detection status sensor includes a vibration sensor 33 for detecting the vibration of the vector frequency converter pump 3 and a temperature sensor 34 for detecting the internal temperature of the vector frequency converter pump 3. The output terminals of both the vibration sensor 33 and the temperature sensor 34 are electrically connected to the input terminal of the PLC control board 31, so that the vibration detected by the vibration sensor 33 and the temperature detected by the temperature sensor 34 are simultaneously transmitted to the PLC control board 31. The PLC control board 31 compares the obtained vibration parameters and temperature parameters with preset vibration parameters and temperature parameters. When the vibration parameters and temperature parameters obtained by the PLC control board 31 do not exceed the preset vibration parameters and temperature parameters, the PLC control board 31 sends a drive command to the frequency converter drive board 32. The output terminal of the frequency converter drive board 32 controls the motor 36 of the vector frequency converter pump 3 to run normally. When the vibration parameters and temperature parameters obtained by the PLC control board 31 exceed the preset vibration parameters and temperature parameters, the PLC control board 31 sends a drive command to the frequency converter drive board 32. The output terminal of the frequency converter drive board 32 controls the motor 36 of the vector frequency converter pump 3 to stop running.

[0051] To facilitate the start-up of multiple vector frequency converter pumps 3, the PLC control boards 31 on the multiple vector frequency converter pumps 3 are bidirectionally connected, and the PLC control board 31 on one of the vector frequency converter pumps 3 is bidirectionally connected to the control cabinet module 12; or, the PLC control boards 31 on the multiple vector frequency converter pumps 3 can all be bidirectionally connected to the control cabinet module 12.

[0052] In this invention, a pressure switch 9 and a digital pressure gauge 10 are also installed on the water outlet manifold 5. Both the pressure switch 9 and the digital pressure gauge 10 are direct applications of existing technology. When the pressure parameter of the water outlet manifold 5 exceeds a preset parameter, the pressure switch 9 automatically closes and triggers an alarm. The digital pressure gauge 10 is used to detect the water flow pressure parameter of the water outlet manifold 5 and displays it numerically. Simultaneously, the output of the pressure switch 9 is connected to the input of the control cabinet module 12, allowing the opening and closing status of the pressure switch 9 to be transmitted to the control cabinet module 12. In this invention, there are at least two first pressure sensors 8 on the water outlet manifold 5, with each sensor serving as a backup. The outputs of both first pressure sensors 8 are connected to the input of the control cabinet module 12. During normal operation of the water supply equipment, if any one of the first pressure sensors 8 malfunctions, the equipment can automatically bypass the malfunctioning sensor and activate the backup sensor 8 to ensure normal operation.

[0053] In order to automatically adjust the rotation of the motor 36 in the vector frequency converter pump 3, a second pressure sensor 35 is also installed at the outlet end of the vector frequency converter pump 3. The output end of the second pressure sensor 35 is connected to the input end of the PLC control board 31. The second pressure sensor 35 is used to detect the water flow pressure at the outlet end of the vector frequency converter pump 3 and transmit the detected water flow pressure at the outlet end of the vector frequency converter pump 3 to the PLC control board 31. The PLC control board 31 compares the water flow pressure at the outlet end of the vector frequency converter pump 3 with the preset water flow pressure and sends a drive command to the frequency converter drive board 32 according to the comparison result. Specifically, when the water flow pressure at the outlet of the vector frequency converter pump 3 is less than the preset pressure, the PLC control board 31 sends a frequency increase signal to the frequency converter drive board 32, and the frequency converter drive board 32 sends a corresponding frequency to the motor 36 of the vector frequency converter pump 3. After receiving the signal, the motor 36 of the vector frequency converter pump 3 increases its speed. When the water flow pressure at the outlet of the vector frequency converter pump 3 is greater than the preset pressure, the PLC control board 31 sends a frequency decrease signal to the frequency converter drive board 32, and the frequency converter drive board 32 sends a corresponding frequency to the motor 36 of the vector frequency converter pump 3. After receiving the signal, the motor 36 of the vector frequency converter pump 3 decreases its speed.

[0054] To facilitate the connection between the water tank 1 and the inlet ends of each vector frequency converter pump 3, the outlet end of the water tank 1 is connected to the water inlet manifold 4. The inlet ends of each vector frequency converter pump 3 in the water pump module are all connected to the water inlet manifold 4. In addition, an overflow pipe 13 is installed on the upper part of the water tank 1. The outlet end of the overflow pipe 13 is connected to the water inlet manifold 4, so that when the liquid level in the water tank 1 is high, the water in the water tank 1 can enter the water inlet manifold 4 through the overflow pipe 13.

[0055] To facilitate monitoring of the liquid level in water tank 1, a high-level sensor 15 and a low-level sensor 14 are also installed inside water tank 1. The output terminals of both the high-level sensor 15 and the low-level sensor 14 are electrically connected to the input terminal of the control cabinet module 12. When the liquid level in water tank 1 reaches the high-level sensor 15, the high-level sensor 15 transmits the detected signal to the control cabinet module 12; when the liquid level in water tank 1 reaches the low-level sensor 14, the low-level sensor 14 transmits the detected signal to the control cabinet module 12, thereby facilitating the monitoring of the liquid level height in water tank 1.

[0056] To facilitate timely detection of problems such as malfunctions in the vector frequency converter pump 3, issues with the outlet pressure of the outlet manifold 5, or malfunctions in the first pressure sensor 8, the water supply equipment provided by this utility model also includes an alarm module 16. The alarm module 16 is model LTD-1101J. The input terminal of the alarm module 16 is electrically connected to the output terminal of the control cabinet, so that the control cabinet module 12 can promptly send an alarm signal to the alarm module 16 after receiving a fault signal, allowing the alarm module 16 to immediately activate the alarm, thereby enabling staff to be informed of the equipment status at the first opportunity.

[0057] In this invention, to facilitate timely replenishment of water to the water tank 1, a switch valve is installed at the outlet end of the municipal water supply pipeline connected to the water tank 1. The switch valve is an electric valve, and its input is connected to the output of the control cabinet module 12. When the high-level sensor 15 does not detect a liquid level, the control cabinet module 12 sends an opening signal to the switch valve, which opens upon receiving the signal, thus replenishing water to the water tank 1. When the high-temperature level sensor 15 detects a liquid level, the control cabinet module 12 sends a closing signal to the switch valve, which opens upon receiving the signal, stopping the replenishment of water to the water tank 1. Alternatively, to ensure water supply to the water tank 1 from the municipal water supply pipeline, a backup water supply pipeline can be connected in parallel. An electric valve is also installed on this backup pipeline, with its input connected to the output of the control cabinet module 12. This allows for timely replenishment of water to the water tank 1 even if one electric valve fails.

[0058] The water supply equipment provided by this utility model has three operating modes, as follows:

[0059] During normal water supply, the control cabinet module 12 sends a start signal to the PLC control board 31 of one of the vector frequency converter pumps 3. After receiving the start signal, the PLC control board 31 of the vector frequency converter pump 3 synchronously transmits it to the PLC control boards 31 of the other vector frequency converter pumps 3. When the PLC control board 31 receives the start signal, it sends a start command to the frequency converter drive board 32. After receiving the start command, the frequency converter drive board 32 sends a start command to the motor 36 in the vector frequency converter pump 3. The motor 36 of the vector frequency converter pump 3 starts running, thereby transporting the water in the water tank 1 to the user end through the inlet manifold 4, the vector frequency converter pump 3, and the outlet manifold 5.

[0060] Simultaneously, the control cabinet module 12 sends control signals to the electrically controlled valves 11 on the first conveying pipeline 6 and the second conveying pipeline 7. After receiving the control signals sent by the control cabinet module 12, the electrically controlled valves 11 on the first conveying pipeline 6 and the second conveying pipeline 7 open. At this time, the pressure stabilizing compensation tank 2 and the outlet water collection pipe 5 are connected through the second conveying pipeline 7. A portion of the water pumped to the outlet water collection pipe 5 by the vector frequency conversion pump 3 can enter the pressure stabilizing compensation tank 2 through the second conveying pipeline 7, so that the pressure stabilizing compensation tank 2 can store water and store energy.

[0061] During peak water usage, the control cabinet module 12 sends a start signal to the PLC control board 31 of one of the vector frequency converter pumps 3. After receiving the start signal, the PLC control board 31 of the vector frequency converter pump 3 synchronously transmits it to the PLC control boards 31 of the other vector frequency converter pumps 3. When the PLC control board 31 receives the start signal, it sends a start command to the frequency converter drive board 32. After receiving the start command, the frequency converter drive board 32 sends a start command to the motor 36 in the vector frequency converter pump 3. The motor 36 of the vector frequency converter pump 3 starts running, thereby transporting the water in the water tank 1 to the user end through the inlet manifold 4, the vector frequency converter pump 3, and the outlet manifold 5.

[0062] Simultaneously, the control cabinet module 12 sends control signals to the electrically controlled valves 11 on the first delivery pipeline 6 and the second delivery pipeline 7. After receiving the control signals sent by the control cabinet module 12, the electrically controlled valves 11 on the first delivery pipeline 6 open and the electrically controlled valves 11 on the second delivery pipeline 7 close. At this time, the pressure stabilizing compensation tank 2 is connected to the inlet water collection pipe 4 through the first delivery pipeline 6, and the water is pumped by the vector frequency converter pump 3, so that the water in the pressure stabilizing compensation tank 2 is simultaneously delivered to the user end through the vector frequency converter pump 3 and the outlet water collection pipe 5.

[0063] When water flow is low, the control cabinet module 12 sends a start signal to the PLC control board 31 of one of the vector frequency converter pumps 3. Upon receiving the start signal, the PLC control board 31 of that vector frequency converter pump 3 synchronously transmits it to the PLC control boards 31 of the other vector frequency converter pumps 3. When the PLC control board 31 receives the start signal, it sends a start command to the frequency converter drive board 32. Upon receiving the start command, the frequency converter drive board 32 sends a stop command to the motor 36 in the vector frequency converter pump 3. Then, the control... The control cabinet module 12 sends control signals to the electrically controlled valves 11 on the first conveying pipeline 6 and the second conveying pipeline 7. After receiving the control signals sent by the control cabinet module 12, the electrically controlled valves 11 on the first conveying pipeline 6 and the second conveying pipeline 7 open. At this time, the pressure stabilizing compensation tank 2 and the outlet water collection pipe 5 are connected through the second conveying pipeline 7. The pressure stabilizing compensation tank 2 uses its own pressure to transport the water inside to the user end through the second conveying pipeline 7 and the outlet water collection pipe 5.

[0064] In this invention, during normal water supply, peak water use, and low-flow water use, the first pressure sensor 8 on the outlet manifold 5 transmits the detected water pressure signal to the control cabinet module 12. The control cabinet module 12 receives the water pressure signal from the first pressure sensor 8 and converts it into a water pressure parameter. This water pressure parameter is compared with a preset water pressure parameter to monitor the water pressure in the outlet manifold 5 in real time. Simultaneously, the pressure switch 9 on the outlet manifold 5 converts the detected water pressure signal into a water pressure parameter and compares it with a preset water pressure parameter to monitor the water pressure in the outlet manifold 5 in real time. The switch then controls the opening and closing of the outlet manifold 5 based on the water pressure parameter. Additionally, the pressure switch 9 also transmits the detected water pressure signal to the control cabinet module 12. The control cabinet module 12 receives the water pressure signal from the first pressure sensor 8, converts it into a water pressure parameter, and compares it with a preset water pressure parameter to monitor the water pressure in the outlet manifold 5 in real time.

[0065] During normal water supply, peak water use, and low-flow water use, the vibration sensor 33 detects the vibration of the vector frequency converter pump 3 in real time, and the temperature sensor 34 detects the temperature of the vector frequency converter pump 3 in real time. These vibration and temperature signals are transmitted to the PLC control board 31. Upon receiving the vibration and temperature signals, the PLC control board 31 converts them into vibration and temperature parameters. These parameters are then compared with preset vibration and temperature parameters transmitted from the control cabinet module 12 to the PLC control board 31. When the vibration and temperature parameters obtained by the PLC control board 31 do not exceed the preset parameters, the PLC control board 31 sends a drive command to the frequency converter drive board 32. The output of the frequency converter drive board 32 controls the motor 36 of the vector frequency converter pump 3 to operate normally. When the vibration and temperature parameters obtained by the PLC control board 31 exceed the preset parameters, the PLC control board 31 sends a drive command to the frequency converter drive board 32, and the output of the frequency converter drive board 32 controls the motor 36 of the vector frequency converter pump 3 to stop operating. Meanwhile, after comparing the vibration parameters detected by the vibration sensor 33 and the vibration parameters detected by the temperature sensor 34 with the preset vibration parameters and temperature parameters, the PLC control board 31 can transmit the comparison results to the control cabinet module 12. When the vibration parameters and temperature parameters obtained by the PLC control board 31 exceed the preset vibration parameters and temperature parameters, the control cabinet module 12 sends an alarm command to the alarm module 16, and the alarm module 16 will trigger an alarm.

[0066] During normal water supply, peak water use, and low flow water use, the second pressure sensor 35 located at the outlet of the vector frequency converter pump 3 detects the water flow pressure at the outlet of the vector frequency converter pump 3 in real time and transmits the pressure signal to the PLC control board 31. After receiving the pressure signal, the PLC control board 31 converts it into pressure parameters and compares these pressure parameters with the preset pressure parameters transmitted from the control cabinet module 12 to the PLC control board 31. This ensures the consistency between the operating status of the motor 36 in the vector frequency converter pump 3 and the water flow pressure. If the operating frequency of the motor 36 in the vector frequency converter pump 3 is inconsistent with the water flow pressure at the outlet of the vector frequency converter pump 3, the vector frequency converter pump 3 is determined to be operating abnormally. The PLC control board 31 sends an abnormal operation command for the vector frequency converter pump 3 to the control cabinet module 12. After receiving the abnormal operation command, the control cabinet module 12 sends an alarm command to the alarm module 16, and the alarm module 16 activates the alarm.

[0067] During normal water supply, peak water use, and low flow water use, the high liquid level sensor 15 and the low liquid level sensor 14 monitor the liquid level in the water tank 1 in real time and transmit the detected liquid level signal to the control cabinet module 12. When neither the high liquid level sensor 15 nor the low liquid level sensor 14 can detect the liquid level, the control cabinet module 12 sends an alarm command to the alarm module 16, and the alarm module 16 alarms.

[0068] In this invention, the operating frequency of the motor 36 of the vector frequency converter pump 3 is determined by the water flow pressure detected by the first pressure sensor 8 for normal water supply, peak water demand, and low-flow water demand. When the frequency required for the motor 36 of the vector frequency converter pump 3 to operate is high, it indicates peak water demand, and the pressure stabilizing tank 2 compensates for water demand. When the frequency required for the motor 36 of the vector frequency converter pump 3 to operate is normal, it indicates normal water demand, and the pressure stabilizing tank 2 stores water. When the frequency required for the motor 36 of the vector frequency converter pump 3 to operate is low, it indicates low-flow water demand, at which time the motor 36 of the vector frequency converter pump 3 stops operating, and the pressure stabilizing tank 2 supplies water. Normal water supply, peak water demand, and low-flow water demand can also be set by the control cabinet module 12, for example, the water demand corresponding to the corresponding time period.

[0069] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0070] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating the present invention and are not intended to limit the scope of the present invention. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A vector water supply device equipped with a pump control pump unit, characterized in that, include: The water pump module includes multiple vector variable frequency pumps (3). The inlet ends of the multiple vector variable frequency pumps (3) are all connected to the water tank (1) for water supply. The outlet ends of the multiple vector variable frequency pumps (3) are connected in parallel to the water outlet collection pipe (5). Each vector variable frequency pump (3) integrates a variable frequency drive board (32), a PLC control board (31) and a detection status sensor. For each vector variable frequency pump (3), the output end of the detection status sensor is connected to the input end of the PLC control board (31), the output end of the PLC control board (31) is connected to the input end of the variable frequency drive board (32), and the output end of the variable frequency drive board (32) is connected to the motor (36) of the vector variable frequency pump (3). A pressure stabilizing compensation tank (2) is connected in parallel between the inlet end of the water pump module and the outlet end of the water pump module, and an electrically controlled valve (11) is installed on the delivery pipeline. The first pressure sensor (8) is installed on the water outlet manifold (5); The control cabinet module (12) and the PLC control board (31) are bidirectionally electrically connected to the control cabinet module (12). The output end of the first pressure sensor (8) is electrically connected to the input end of the control cabinet module (12). The output end of the control cabinet module (12) is electrically connected to the electrically controlled valve (11).

2. The vector water supply equipment equipped with a pump control pump group according to claim 1, characterized in that, The detection status sensor includes a vibration sensor (33) for detecting the vibration of the vector frequency converter pump (3) and a temperature sensor (34) for detecting the internal temperature of the vector frequency converter pump (3).

3. The vector water supply equipment equipped with a pump control pump group according to claim 1 or 2, characterized in that, The PLC control board (31) card on multiple vector frequency pumps (3) is bidirectionally connected to the control cabinet module (12).

4. The vector water supply equipment equipped with a pump control pump group according to claim 1 or 2, characterized in that, The PLC control boards (31) on multiple vector frequency converter pumps (3) are bidirectionally connected, and the PLC control board (31) on one of the vector frequency converter pumps (3) is bidirectionally connected to the control cabinet module (12).

5. The vector water supply equipment equipped with a pump control pump group according to claim 1, characterized in that, The pressure stabilizing compensation tank (2) is connected to the inlet end of the water pump module through a first conveying pipeline (6), and the pressure stabilizing compensation tank (2) is connected to the outlet water collection pipe (5) through a second conveying pipeline (7). The electrically controlled valve (11) is installed on the first conveying pipeline (6) and the second conveying pipeline (7) respectively.

6. The vector water supply equipment equipped with a pump control pump group according to claim 1, characterized in that, The outlet manifold (5) is also equipped with a pressure switch (9) and a digital pressure gauge (10), and there are at least two first pressure sensors (8) on the outlet manifold (5).

7. The vector water supply equipment equipped with a pump control pump group according to claim 1, characterized in that, The vector frequency converter pump (3) is also equipped with a second pressure sensor (35) at its outlet end. The output end of the second pressure sensor (35) is connected to the input end of the PLC control board (31) card.

8. The vector water supply equipment equipped with a pump control pump group according to claim 1, characterized in that, The water tank (1) is connected to the water pump module through the water inlet manifold (4), and an overflow pipe (13) is also installed on the upper part of the water tank (1), which is connected to the water inlet manifold (4).

9. The vector water supply equipment equipped with a pump control pump group according to claim 1, characterized in that, The water tank (1) is also equipped with a high liquid level sensor (15) and a low liquid level sensor (14), and the output terminals of the high liquid level sensor (15) and the low liquid level sensor (14) are electrically connected to the input terminal of the control cabinet module (12).

10. The vector water supply equipment equipped with a pump control pump group according to claim 1, characterized in that, It also includes an alarm module (16), the input of which is electrically connected to the output of the control cabinet module (12).

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