CN216552193U - Intelligent full-frequency-conversion water supply control cabinet - Google Patents
Intelligent full-frequency-conversion water supply control cabinet Download PDFInfo
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- CN216552193U CN216552193U CN202122646724.1U CN202122646724U CN216552193U CN 216552193 U CN216552193 U CN 216552193U CN 202122646724 U CN202122646724 U CN 202122646724U CN 216552193 U CN216552193 U CN 216552193U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
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Abstract
The utility model discloses an intelligent full-frequency-conversion water supply control cabinet, which comprises: the gateway passes through first communication interface links to each other with the water pump, programmable logic controller pass through the second communication interface with the gateway links to each other, and converter, water pump, level sensor, pressure sensor, water tank intake motorised valve, touch display screen, buzzer siren link to each other with programmable logic controller respectively, and the entrance guard controller links to each other with infrared alarm, and the watch-dog links to each other with touch display screen, the converter with the water pump links to each other, two liang of links to each other of converter, level sensor is used for gathering the water level value of water tank, pressure sensor is used for gathering water pump outlet pressure, variable speed controller install in on the water pump. By adopting the utility model, the water pressure of the user side can be more stable, and meanwhile, each water pump is ensured to operate in a high-efficiency region, and the power consumption of the secondary water supply control system is effectively reduced.
Description
Technical Field
The utility model relates to the field of water supply control, in particular to an intelligent full-variable-frequency water supply control cabinet.
Background
The shortage of water resources and energy resources is an important factor for restricting the economic development of China, and the water and energy conservation is the basic national policy for the sustainable development of the social economy of China.
The birth of the variable frequency speed control technology starting from the last century brings a wide space for the high-efficiency energy-saving automatic operation of a water pump in water supply equipment;
through various researches, the technology of the secondary water supply control equipment adopted by people at the present stage is old, the function is limited, and most control cabinets still adopt a one-driving-more mode;
when the water pump runs at 50Hz, the flow is high, the vibration and noise of the water pump are also high, the adverse effect is generated on the service life of equipment, and meanwhile, the efficiency of the water pump deviates far from a high-efficiency point, so that the energy consumption of a system is increased;
therefore, this scheme provides an intelligence full frequency conversion water supply control cabinet and solves above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, an object of the present invention is to provide an intelligent full-variable-frequency water supply control cabinet, such that one variable-frequency controller drives one water pump to work, which will significantly improve reliability and stability of secondary water supply, implement one-to-one full-variable-frequency operation control of a pump set, make water pressure at a user end more stable, and simultaneously ensure that each water pump operates in a high-efficiency region, thereby effectively reducing power consumption of a secondary water supply control system.
Full frequency conversion water supply control cabinet of intelligence, including the cabinet body and cabinet door, its characterized in that, cabinet body top surface is equipped with rings, be equipped with in the cabinet body:
the system comprises a plurality of frequency converters, water pumps, a programmable logic controller, a monitor, an entrance guard controller, an infrared alarm, a buzzer alarm, a gateway, a first communication interface, a second communication interface, a liquid level sensor, a pressure sensor, a water tank water inlet and outlet electric valve, a touch display screen, a variable speed controller and a memory, wherein the number of the frequency converters is the same as that of the frequency converters;
the gateway is connected with the water pump through the first communication interface, the programmable logic controller is connected with the gateway through the second communication interface, the frequency converter, the water pump, the liquid level sensor, the pressure sensor, the water tank water inlet and outlet electric valves, the touch display screen, the buzzer alarm and the variable speed controller are respectively connected with the programmable logic controller, the access control controller is connected with the infrared alarm, the monitor is connected with the touch display screen, the frequency converters are connected with the water pump, the frequency converters are connected in pairs, the liquid level sensor is used for acquiring the water level value of the water tank, the pressure sensor is used for acquiring the outlet pressure of the water pump, and the variable speed controller is installed on the water pump;
the communication mode between the programmable logic controller and the gateway is half-duplex communication, and the gateway has an instruction storage function;
the access controller comprises a transceiver, a controller and a memory; the transceiver and the memory are respectively connected with the controller, and the monitor comprises a camera and is installed at the door of the pump room.
Preferably, the gateway accesses the programmable logic controller at a preset time, and copies and stores the accessed data stored in the programmable logic controller;
when the programmable logic controller fails, the gateway controls the second communication interface to be closed, and the gateway sends an alarm signal to external terminal equipment.
Preferably, if the liquid level of the water tank detected by the liquid level sensor is higher than an upper limit liquid level in a preset liquid level range, the programmable logic controller controls the water inlet electric valve to close.
Preferably, if the liquid level of the water tank detected by the liquid level sensor is lower than a lower limit liquid level in a preset liquid level range, the programmable logic controller controls the water inlet electric valve to be opened.
Preferably, if the liquid level of the water tank detected by the liquid level sensor is at the bottom of the water tank, namely the bottom line of the water tank, the programmable logic controller controls the buzzer alarm to be started.
Preferably, if the liquid level of the water tank detected by the liquid level sensor is within a preset liquid level range, the variable frequency controller controls the first water pump to operate, and when the pressure value detected by the pressure sensor reaches a preset pressure range, the first water pump motor operates stably.
Preferably, when the pressure value detected by the pressure sensor fails to reach a preset pressure range, the programmable logic controller controls the variable frequency controller to increase output power and voltage, at the moment, the rotating speed of the water pump motor is increased, and when the pressure value detected by the pressure sensor reaches the preset pressure range, the first water pump motor stably operates.
Preferably, when the first frequency converter increases the output power and the voltage and fails to enable the pressure value detected by the pressure sensor to reach a preset pressure range, and when the operating frequency of the first water pump reaches 50Hz, the programmable logic controller controls the second frequency converter to be started, the second water pump is started along with the second frequency converter, and the programmable logic controller controls the frequency of the first water pump to be reduced, so that the pressure value detected by the pressure sensor reaches a preset pressure value, and the first water pump and the second water pump both stably operate.
Preferably, when the pressure value detected by the pressure sensor is higher than a preset pressure value, the programmable logic controller controls the frequency converter to reduce the frequency, so that the pressure value detected by the pressure sensor is at the preset pressure value.
Preferably, the programmable logic controller further controls the first frequency converter to enter a sleep state, and the other frequency converters increase the output power and the voltage, so that the pressure value detected by the pressure sensor is at a preset pressure value.
Has the advantages that:
in the utility model, the number of the variable speed controllers is matched with that of the pumps, namely, the variable speed controllers correspond to the pumps one by one, a plurality of pumps form a pump group, one variable speed controller corresponds to one pump, a control mode of one-driving-one frequency conversion is adopted, and the programmable logic controller controls the communication between the motor and the frequency conversion system through an industrial communication line. When the operation efficiency of one pump cannot meet the use pressure requirement in the process of controlling the operation of a group of pump groups, the programmable logic controller starts another variable speed controller through logic action to increase the output efficiency of the pump groups; when the operating pressure of the equipment is greater than the operating pressure, the variable speed controllers simultaneously reduce the frequency, and before the frequency is reduced to the operating efficiency of the single pump, the operation of one water pump is stopped, the frequency of the other variable speed controllers is simultaneously increased, so that the pump set is ensured to work in a self high-efficiency area, and the problem of the operating condition of a low-efficiency interval in which the variable speed controllers work in a one-drive-multiple mode is solved, thereby achieving the purposes of environmental protection and energy saving. The programmable logic controller detects the running condition of the variable speed controller in real time and judges whether to start or close one variable speed controller according to the running parameters so as to ensure the stable running. One speed change controller drags a water pump work, will obviously improve the reliability and the stability of secondary water supply, realizes that pump package one-to-one full frequency conversion operation control for user side water pressure is more stable, guarantees simultaneously that every water pump all operates at high-efficient interval, effective lower secondary water supply control system consumption.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an intelligent full-frequency-conversion water supply control cabinet provided by an embodiment of the utility model;
FIG. 2 is another schematic diagram of the intelligent full-frequency-conversion water supply control cabinet provided by the embodiment of the utility model;
fig. 3 is another schematic diagram of the intelligent full-variable-frequency water supply control cabinet provided by the embodiment of the utility model.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The secondary water supply is a form that a unit or an individual stores and pressurizes urban public water supply or self-built facility water supply, and supplies water to users or self-use through a pipeline. The secondary water supply is mainly established for compensating the pressure shortage of the municipal water supply pipeline and ensuring the water consumption of dwellings and livelihoods in high-rise people.
Fig. 1 is a schematic diagram of an intelligent full-frequency-conversion water supply control cabinet provided in an embodiment of the present invention, where the control cabinet includes:
the system comprises a plurality of frequency converters, a water pump 103, a programmable logic controller 107, a monitor 109, an entrance guard controller 114, an infrared alarm 115, a buzzer alarm 113, a gateway 104, a first communication interface 102, a second communication interface 106, a liquid level sensor 108, a pressure sensor 112, a water tank water inlet and outlet electric valve 111, a touch display screen 110, a variable speed controller 101 and a memory, wherein the number of the frequency converters is the same as that of the frequency converters;
the gateway 104 is connected with the water pump 103 through the first communication interface 102, the programmable logic controller 107 is connected with the gateway 104 through the second communication interface 106, the frequency converter, the water pump 103, the liquid level sensor 108, the pressure sensor 112, the water tank water inlet and outlet electric valve 111, the touch display screen 110 and the buzzer alarm 113 are respectively connected with the programmable logic controller 107, the access controller 114 is connected with the infrared alarm 115, the monitor 109 is connected with the touch display screen 110, the frequency converter is connected with the water pump 103, the frequency converters are connected in pairs, the liquid level sensor 108 is used for collecting the water level value of the water tank, the pressure sensor 112 is used for collecting the outlet pressure of the water pump 103, and the variable speed controller 101 is installed on the water pump 103.
The gateway 104 accesses the programmable logic controller 107 at a preset time, and copies and stores the accessed data stored in the programmable logic controller 107. The data stored in the programmable logic controller 107 may include: water supply data such as water outlet pressure, frequency of pump increasing/decreasing of a frequency converter, dormancy frequency and the like.
When the programmable logic controller 107 fails, the gateway 104 controls the second communication interface 106 to be closed, and the gateway 104 sends an alarm signal to an external terminal device. At this time, the gateway 104 may also transmit the data copied from the programmable logic controller 107 to the designated server, so that each designated server may directly acquire the water supply data. The gateway 104 is connected to the water pump 103 through the first communication interface 102, at this time, the gateway 104 may close the second communication interface 106, and prevent the programmable logic controller 107 from uploading fault data to affect data interaction, at this time, the first communication interface 102 is opened, and the gateway 104 may directly perform data interaction with the water pump 103.
The communication mode between the plc 107 and the gateway 104 is half duplex communication, so that when two hosts are linked, if two hosts simultaneously issue inquiry or control commands to the plc 107, a packet collision phenomenon occurs, resulting in data loss. To avoid this risk, the gateway 104 has a function of storing commands, when the host A, B issues commands at the same time, the command of the host B will be temporarily stored in our gateway 104, and after the command of the host a returns data, the command of the host B is sent to the plc 107.
When the water pump 103 is ready to operate, a main power breaker of the control cabinet is closed, the control cabinet is started, if the liquid level sensor 108 detects that the liquid level of the water tank is within a preset liquid level range, the first frequency converter operates to start the first water pump 103, the rotating speed of the motor of the first water pump 103 is increased along with the increase of the slope starting frequency and the output voltage, the outlet pressure is gradually increased, and when the pressure sensor 112 detects that the outlet pressure reaches the preset pressure range, the rotating speed of the motor of the first water pump 103 is stably operated.
When the water consumption of a user is increased and the rotating speed of the motor of the first water pump 103 cannot reach a preset pressure range, at the moment, the programmable logic controller 107 sends a control signal to enable the first frequency converter to increase the output frequency and the voltage, at the moment, the rotating speed of the motor of the first water pump 103 is increased to the preset pressure range, so that the stable operation of a water supply system is achieved, the process is dynamic and continuous, and a user side hardly feels water pressure change.
When the water consumption of a user is further increased, the first frequency converter outputs at full frequency, the first water pump 103 runs at full frequency but still cannot reach the set pressure, the other frequency converter is started, then the second water pump 103 starts at variable frequency, the frequency of the first water pump 103 is reduced, and finally when the pressure reaches the set value, the two water pumps 103 are both in the optimal efficiency interval and stably run, so that the water supply output pressure is kept stable. Because the system all operates in high-efficiency interval when many water pumps 103 work simultaneously, do not have the electric energy waste that the low-efficiency interval caused, so can reach ideal energy-conserving effect. When one water pump 103 works in a frequency conversion mode for a long time, the programmable logic controller 107 can be switched to the next pump to run in a timing mode.
When the water consumption of a user is reduced, the water outlet pressure is higher than the set pressure, and the first frequency converter immediately reduces the frequency and reduces the speed, so that the water outlet pressure is always stabilized at the set pressure value. When the water consumption of a user is further reduced, the first frequency converter is reduced to the preset dormancy frequency and the time delay dormancy time, one frequency converter is dormant, the water pump 103 stops running along with the first frequency converter, the other frequency converters increase the output frequency and the output voltage, the water outlet pressure is stabilized at a set value, and the operation is still kept in a high-efficiency interval. When the water consumption is further reduced, the above processes are repeated, at least one pump is kept to operate to maintain the pressure to be stable, the other pumps enter a dormant state, the programmable logic controller 107 detects the water pressure change in real time, and when the water pressure is lower than the set pressure of the system, the frequency converter is restarted to operate.
When level sensor 108 detects that the water tank water level is too low, within 2 minutes in the preset time, the water level still does not recover, and water pump 103 stops operating, programmable logic controller 107 controls buzzer siren 113 opens, reminds relevant staff to look over the maintenance, works as when level sensor 108 detects that the water tank water level reaches preset water level scope, programmable logic controller 107 controls buzzer siren 113 closes.
According to the similar principle of the water pump 103, the following steps are carried out: when the speed of the water pump 103 changes, the flow is proportional to the rotational speed, the head is proportional to the square of the rotational speed, and the shaft power is proportional to the cube of the rotational speed. From the relationship of the proportional law, when the rotating speed of the same water pump 103 changes, the main performance parameters of the water pump 103 change according to the proportional law and the efficiency is kept basically unchanged in the changing process. Therefore, the flow is adjusted by adjusting the rotating speed, and the electric power taken by the motor of the water pump 103 is greatly reduced. Thus, the present invention is a good method that can significantly save energy.
Fig. 2 and fig. 3 are another schematic diagrams of the intelligent full-frequency-conversion water supply control cabinet provided by the embodiment of the utility model, wherein (r) is an access controller 114. And the second is a frequency converter. Thirdly, an electronic electric energy meter. A programmable logic controller 107, a wireless gateway 104 and a liquid level sensor. The camera is connected to the access controller 114 through the programmable logic controller 107 for storage and preservation. The liquid level automatic controller is connected with the programmable logic controller 107, detects the liquid level in the water tank, the high level is the upper limit liquid level control point of the water tank, when the water level is high, the water inlet electric valve is automatically closed, the water tank is stopped from feeding water, the overflow of the water tank is prevented, the low level is the lower limit liquid level control point of the water tank, when the water level is low, the water inlet electric valve is automatically opened, and the water is added into the water tank. The water tank liquid level, the water outlet pressure value of the water pump 103 and the real-time running condition in the pump room can be transmitted to the monitoring platform through the Huawei wireless gateway 104 for real-time monitoring and adjustment.
The monitor 109 includes a camera for collecting image data of the pump room and uploading the image data to an external terminal device.
The access controller 114 includes: a transceiver, a controller, a memory; transceiver, memory respectively with the controller links to each other, and outside camera is installed in the pump house gate for gather personnel's that enter the door face image data, and will face image data upload to access control controller 114, access control controller 114 will face image data with the face image data that the memory prestores are compared, if exist with the unmatched face data of prestore face image data, infrared alarm 115 reports to the police.
The touch display screen 110 can display the current process flow in real time, including information such as the working condition of a frequency converter, the water outlet pressure and the liquid level of a water tank, so that the secondary water supply flow is visualized, and the use requirements of users are met. Parameters such as water outlet pressure, frequency of increasing/decreasing a pump by a frequency converter, dormancy frequency and the like can be modified on the touch screen, and the debugging process of the frequency conversion system is simplified. The touch screen is also provided with password protection, and only professional technicians enter the parameter modification interface through the passwords to debug or maintain, so that the secondary water supply system is protected from being modified by random non-professional personnel. The entrance guard system is linked with the infrared alarm system, and is set to enter in a card swiping or password mode, once illegal invasion is detected, the entrance guard system is linked with the infrared alarm system to give an alarm, and the safety performance of the secondary water supply system is greatly improved. The camera system can monitor the state of the pump room in real time, and the water supply behaviors such as abnormal access of personnel are endangered, photographed and uploaded to the cloud platform, and alarm is triggered.
The original equipment for dragging multiple water pumps 103 is that a plurality of water pumps 103 are matched with a frequency converter, and the operation mode is combined according to power frequency-frequency conversion. When the equipment is switched between the power frequency and the variable frequency of the water pump 103 during the operation, the phenomenon of temporarily stopping water supply can occur. When the water pump 103 is operated at a low speed, the water pump 103 is not in the high efficiency region.
For different water supply occasions, different powers of the water pumps 103, different numbers of the water pumps 103 and different electrical engineers, the written control programs are different, the water pumps cannot be mutually universal, and the standardization is difficult to unify.
The intelligent full-variable-frequency water supply control cabinet adopts a mode that each water pump 103 unit is configured with a variable-frequency head, namely, a variable-speed controller 101 based on a microprocessor system is installed on the water pump 103 one by one, the operation mode adopts a variable-frequency-variable-frequency combination, a plurality of running water pumps 103 run under the same working condition (an equivalent synchronous mode), and the phenomenon of instantaneous water supply cutoff in the power frequency-variable-frequency switching process of the water pump 103 is solved. In the variable speed control system, the pump works along with the speed, the flow can be reduced, the flow just meets the required water head, no matter how the working condition flow changes, each pump set is arranged in a high-efficiency operation efficiency area, and the phenomenon of energy consumption waste can not occur.
The intelligent full-frequency-conversion water supply control cabinet comprises a cabinet body and a cabinet door, wherein a programmable logic controller 107, a circuit breaker, an electric energy meter, a Huashi wireless gateway 104, an access control system and the like are arranged in the cabinet body. The water outlet pipe of the water pump 103 is connected with a water outlet pressure transmitter, and the pressure transmitter is connected with a programmable logic controller 107. Pump house door department installation infrared access control system is connected with access control system in the switch board, and high definition surveillance camera head is installed to the top of the door, real-time situation in the pump house can be monitored.
The cabinet body top surface is provided with four rings, makes things convenient for the crane to hoist and carries the transportation.
The full frequency conversion water supply switch board of intelligence passes through touch display screen 110 for people can directly find out water pump 103 each time interval running state and delivery port pressure value, have improved intelligent level more, can satisfy people's user demand more. The infrared access control system can prevent illegal people from carrying out destructive behaviors, and greatly improves the safety performance. The camera performs storage protection on the memory through the programmable logic controller 107, and can also monitor the pump room condition remotely in real time.
In the utility model, the number of the frequency converters is matched with that of the pumps, namely, the frequency converters are in one-to-one correspondence, a plurality of pumps form a pump set, every two frequency converters are connected, one frequency converter corresponds to one pump, a control mode of one-to-one frequency conversion is adopted, and the programmable logic controller 107 controls the communication between the motor and the frequency conversion system through an industrial communication line. In the process of controlling the operation of a group of pump groups, when the operation efficiency of one pump cannot meet the use pressure requirement, the programmable logic controller 107 starts another frequency converter through logic action, so that the output efficiency of the pump groups is increased; when the operating pressure of the equipment is greater than the operating pressure, the frequency converters simultaneously reduce the frequency, the operation of one water pump 103 is stopped before the frequency is reduced to the operating efficiency of the single pump, the frequency of the other frequency converters is simultaneously increased, the pump set is ensured to work in a self high-efficiency area, and the problem of low-efficiency interval operating conditions of the frequency converters in one-to-one mode is solved, so that the purposes of environmental protection and energy saving are achieved. The programmable logic controller 107 detects the operation condition of the frequency converter in real time and judges whether to start or shut down one frequency converter according to the operation parameters, thereby ensuring stable operation. One frequency converter drags a water pump 103 work, will obviously improve the reliability and the stability of secondary water supply, realizes that pump package one-to-one full frequency conversion operation control for user side water pressure is more stable, guarantees simultaneously that every water pump 103 all operates at high-efficient interval, effective lower secondary water supply control system consumption. The frequency conversion-power frequency state switching is not carried out, the water supply process is dynamically balanced, and the pressure of the water outlet end is stable. The equipment adopts an efficiency balance operation mode when a plurality of pumps run in a full frequency conversion mode, all the pumps are in an efficiency area, and the energy-saving effect is ideal.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. Full frequency conversion water supply control cabinet of intelligence, including the cabinet body and cabinet door, its characterized in that, cabinet body top surface is equipped with rings, be equipped with in the cabinet body:
the system comprises a plurality of frequency converters, water pumps, a programmable logic controller, a monitor, an entrance guard controller, an infrared alarm, a buzzer alarm, a gateway, a first communication interface, a second communication interface, a liquid level sensor, a pressure sensor, a water tank water inlet electric valve, a touch display screen, a variable speed controller and a memory, wherein the number of the water pumps is the same as that of the frequency converters;
the gateway is connected with the water pump through the first communication interface, the programmable logic controller is connected with the gateway through the second communication interface, the frequency converter, the water pump, the liquid level sensor, the pressure sensor, the water tank water inlet electric valve, the touch display screen, the buzzer alarm and the variable speed controller are respectively connected with the programmable logic controller, the access controller is connected with the infrared alarm, the monitor is connected with the touch display screen, the frequency converters are connected with the water pump, the frequency converters are connected in pairs, the liquid level sensor is used for acquiring the water level value of the water tank, the pressure sensor is used for acquiring the outlet pressure of the water pump, and the variable speed controller is installed on the water pump;
the communication mode between the programmable logic controller and the gateway is half-duplex communication, and the gateway has an instruction storage function;
the entrance guard controller comprises a transceiver, a controller and a memory; the transceiver and the memory are respectively connected with the controller, the monitor comprises a camera, and the camera is installed at the door of the pump room;
the frequency converter comprises a first frequency converter and a second frequency converter, and the water pump comprises a first water pump and a second water pump.
2. The intelligent full-frequency-conversion water supply control cabinet according to claim 1, wherein the gateway accesses the programmable logic controller at a preset time, and copies and stores the accessed data stored in the programmable logic controller;
when the programmable logic controller fails, the gateway controls the second communication interface to be closed, and the gateway sends an alarm signal to external terminal equipment.
3. The intelligent full-frequency-conversion water supply control cabinet according to claim 1, wherein the programmable logic controller controls the water pump to be turned off if the liquid level of the water tank detected by the liquid level sensor is higher than an upper limit liquid level in a preset liquid level range.
4. The intelligent full-frequency-conversion water supply control cabinet according to claim 1, wherein the programmable logic controller controls the water pump to be started if the liquid level of the water tank detected by the liquid level sensor is lower than a lower limit liquid level in a preset liquid level range.
5. The intelligent full-variable-frequency water supply control cabinet according to claim 1, wherein the programmable logic controller controls the buzzer alarm to be turned on if the liquid level of the water tank detected by the liquid level sensor is at the bottom of the water tank, namely a bottom line of the water tank.
6. The intelligent full-variable-frequency water supply control cabinet according to claim 1, wherein the first frequency converter controls the first water pump to operate if the liquid level of the water tank detected by the liquid level sensor is within a preset liquid level range, and the first water pump motor operates stably when the pressure value detected by the pressure sensor reaches a preset pressure range.
7. The intelligent full-frequency-conversion water supply control cabinet according to claim 1, wherein when the pressure value detected by the pressure sensor fails to reach a preset pressure range, the programmable logic controller controls the first frequency converter to increase the output power and the voltage, at this time, the rotation speed of the first water pump motor is increased, and when the pressure value detected by the pressure sensor reaches the preset pressure range, the first water pump motor is stably operated.
8. The intelligent full-frequency-conversion water supply control cabinet according to claim 7, wherein when the first frequency converter fails to increase output power and voltage, and the pressure value detected by the pressure sensor reaches a preset pressure range, and the operating frequency of the first water pump is fallen to 50Hz, the programmable logic controller controls the second frequency converter to be started, the second water pump is started along with the second frequency converter, and the programmable logic controller controls the frequency of the first water pump to be reduced, so that the pressure value detected by the pressure sensor reaches a preset pressure value, and the first water pump and the second water pump both stably operate.
9. The intelligent full-frequency-conversion water supply control cabinet according to claim 1, wherein when the pressure value detected by the pressure sensor is higher than a preset pressure value, the programmable logic controller controls the frequency converter to reduce the frequency and speed, so that the pressure value detected by the pressure sensor is at the preset pressure value.
10. The intelligent full-frequency-conversion water supply control cabinet according to claim 1, wherein the programmable logic controller further controls a first frequency converter to enter a sleep state, and the other frequency converters increase output power and voltage, so that the pressure value detected by the pressure sensor is at a preset pressure value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202122646724.1U CN216552193U (en) | 2021-11-01 | 2021-11-01 | Intelligent full-frequency-conversion water supply control cabinet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122646724.1U CN216552193U (en) | 2021-11-01 | 2021-11-01 | Intelligent full-frequency-conversion water supply control cabinet |
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| CN216552193U true CN216552193U (en) | 2022-05-17 |
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| CN202122646724.1U Active CN216552193U (en) | 2021-11-01 | 2021-11-01 | Intelligent full-frequency-conversion water supply control cabinet |
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