CN110725366A - Multi-pump water supply control system, method and device - Google Patents
Multi-pump water supply control system, method and device Download PDFInfo
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- CN110725366A CN110725366A CN201910957070.9A CN201910957070A CN110725366A CN 110725366 A CN110725366 A CN 110725366A CN 201910957070 A CN201910957070 A CN 201910957070A CN 110725366 A CN110725366 A CN 110725366A
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B11/00—Arrangements or adaptations of tanks for water supply
- E03B11/10—Arrangements or adaptations of tanks for water supply for public or like main water supply
- E03B11/16—Adaptations of devices for putting pumping plants in and out of operation, e.g. automatic control devices
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons, valves, in the pipe systems
- E03B7/075—Arrangement of devices for control of pressure or flow rate
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons, valves, in the pipe systems
- E03B7/078—Combined units with different devices; Arrangement of different devices with respect to each other
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
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- Water Supply & Treatment (AREA)
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The application provides a multi-pump water supply control system, method and device, and relates to the technical field of water pump control. The system comprises: at least two pump bodies, a controller and a pressure detector, wherein: each of the pump bodies includes: a main circuit and a control circuit; the main circuit comprises: the frequency converter, the water pump, the air switch and the water pump are arranged in series through cables, and the frequency converter is electrically connected with the control circuit; the controller is electrically connected with the pressure detector and is connected with the control circuit in each pump body; the at least two pump bodies are connected in parallel and are connected with a water inlet pipe and a water outlet pipe together, and the pressure detector is arranged at the water outlet of the water outlet pipe. Compared with the prior art, the problem of unstable water supply caused by delay in the switching process of the water pump is avoided.
Description
Technical Field
The application relates to the technical field of water pump control, in particular to a multi-pump water supply control system, method and device.
Background
In the production system, various water pumps are equipped to continuously supply water to water points. Some water consumption points have higher water supply indexes, and two or even a plurality of water pumps are generally equipped for constant-pressure water supply in order to keep the production process stable.
In the prior art, two water pumps are generally used for constant-pressure water supply, and the water supply mode can be pressure controller Control, flow meter Control, single chip microcomputer Control or Distributed Control System (DCS) System Control.
However, these control methods may cause delay in switching the water pump, resulting in unstable water supply.
Disclosure of Invention
An object of the present application is to provide a multi-pump water supply control system, method and device for overcoming the defects in the prior art, so as to solve the problem of unstable water supply caused by delay in the switching process of the water pump in the prior art.
In order to achieve the above purpose, the technical solutions adopted in the embodiments of the present application are as follows:
in a first aspect, an embodiment of the present application provides a multi-pump water supply control system, including: at least two pump bodies, pressure detector and controller, wherein:
each of the pump bodies includes: a main circuit and a control circuit; the main circuit comprises: the frequency converter, the water pump and the switch are connected in series through cables, and the frequency converter is connected with the control circuit;
the controller is connected with the pressure detector and the control circuit in each pump body;
the at least two pump bodies are arranged in parallel and are connected with a water inlet pipe and a water outlet pipe together, and the pressure detector is arranged at a water outlet of the water outlet pipe;
the controller is used for receiving the pressure value detected by the pressure detector, if the pressure value is smaller than or equal to a preset pressure threshold value, the fault of the currently working pump body is judged, the controller sends a switching instruction to each pump body, and the switching instruction is used for closing the currently working pump body and opening one of the other pump bodies.
Optionally, each of the pump bodies further comprises: operating the circuit; the operation circuit includes: the first intermediate relay and the operation indicating lamp are respectively connected with the normally open contact of the frequency converter, and the operation indicating lamp is used for indicating the operation state of the water pump.
Optionally, each of the pump bodies further comprises: a fault circuit, the fault circuit comprising: the heat relay, the second intermediate relay and the fault indicator lamp are respectively connected with a normally open contact of the frequency converter, and the fault indicator lamp is used for indicating that the water pump has a fault.
Optionally, the control circuit comprises: the selection switch, the power-off delay relay and the third intermediate relay; the selector switch is connected with the normally open contacts of the intermediate relays in the fault circuits of other pump bodies, and the normally open contacts of the intermediate relays in the fault circuits of other pump bodies are also connected with the power-off delay relay and the third intermediate relay respectively through the normally closed contact of the second intermediate relay;
and the normally open contact of the third intermediate relay is connected with the frequency converter.
Optionally, each of the pump bodies further comprises: an interlock circuit, the interlock circuit comprising: a fourth intermediate relay connected with the selection switch.
Optionally, the controller comprises: at least two fifth intermediate relays; the selection switch is also connected with a normally open contact of the fifth intermediate relay; the normally open contact of the fifth intermediate relay is also connected with the power-off delay relay and the third intermediate relay respectively through the normally closed contact of the second intermediate relay;
each of the fifth intermediate relays is connected to the controller.
Optionally, the system further comprises: a remote control circuit, the remote control circuit comprising: the pressure detector comprises a switch, a remote controller and a touch screen, wherein the switch, the remote controller and the touch screen are electrically connected, and the touch screen is used for displaying a pressure value detected by the pressure detector and/or a preset pressure threshold value.
In a second aspect, the present application provides a multi-pump water supply control method, which is applied to the system of any one of the above first aspects, the method comprising:
the controller receives the pressure value detected by the pressure detector;
the controller judges whether the pressure value is larger than a preset pressure threshold value or not;
and if the pressure value is smaller than or equal to the preset pressure threshold value, judging that the currently working pump body fails, and sending a switching instruction to each pump body by the controller, wherein the switching instruction is used for closing the currently working pump body and opening one of the other pump bodies.
Optionally, the method further comprises:
and if the currently working pump body is abnormal, the control circuit of the currently working pump body sends an abnormal signal to the controller, and the controller sends the switching instruction to each pump body after receiving the abnormal signal.
In a third aspect, another embodiment of the present application provides a multi-pump water supply control apparatus, including: receiving module and sending module, wherein:
the receiving module is used for receiving the pressure value detected by the pressure detector;
the judging module is used for judging whether the pressure value is greater than a preset pressure threshold value;
if the pressure value is smaller than or equal to a preset pressure threshold value, judging that the currently working pump body has a fault;
the sending module is used for sending a switching instruction to each pump body, and the switching instruction is used for closing the currently working pump body and opening one of the other pump bodies.
In a fourth aspect, another embodiment of the present application provides a multi-pump water supply control apparatus, including: a processor, a storage medium and a bus, wherein the storage medium stores machine-readable instructions executable by the processor, the processor and the storage medium communicate via the bus when the multi-pump water supply control device is operated, and the processor executes the machine-readable instructions to perform the steps of the method according to any one of the second aspects.
In a fifth aspect, another embodiment of the present application provides a storage medium having a computer program stored thereon, where the computer program is executed by a processor to perform the steps of the method according to any one of the second aspects.
The beneficial effect of this application is: adopt the multi-pump water supply control system that this application provided, the pressure value of the delivery port department of the outlet pipe of water pump that pressure detector gathered is received in real time through the controller, judge whether the water pump in the current work has the abnormal conditions, if the controller receives the current pressure value and is less than preset pressure threshold, then judge that the pump body in the current work breaks down, the controller and send switching instruction to each pump body, close the pump body in the work that breaks down at present, select one pump body among the all the other pump bodies to open work, because this application judges whether current operating condition appears unusually through the pressure value of delivery port department, and directly control the switching between the pump bodies through the controller, switching efficiency is high, thereby the stability of supplying water has been guaranteed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic structural diagram of a multi-pump water supply control system according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a multi-pump water supply control system according to another embodiment of the present application;
FIG. 3 is a schematic structural diagram of a pump body according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a controller according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a remote control circuit according to an embodiment of the present application;
FIG. 6 is a schematic flow chart illustrating a multi-pump water supply control method according to an embodiment of the present disclosure;
FIG. 7 is a schematic structural diagram of a multi-pump water supply control device according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a multi-pump water supply control device according to an embodiment of the present application.
Reference numerals: 100-a multi-pump water supply control system; 110-a pump body; 111-main circuit; 112-a control circuit; 112 a-a control circuit of the first water pump; 112 b-a control circuit of a water pump II; 113-a frequency converter; 114-a water pump; 115-a filter; 116-a thermal relay; 117 a-the operational circuitry of the first water pump; 117 b-operating circuit of water pump two; 118 a-fault circuit of water pump one; 118 b-fault circuit of water pump two; 119 a-interlock circuit of the first water pump; 119 b-an interlock circuit of a second water pump; 120-a pressure detector; 130-a controller; 140-remote control circuitry; 141-a switch; 142-a touch screen; 143-a remote controller; 301-a receiving module; 302-a judgment module; 303-a sending module; 501, a processor; 502-storage medium; 503-bus.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments.
In one embodiment of the present application, a multi-pump water supply control system includes two water pumps one and two arranged in parallel, and the following embodiments are illustrated with reference to the system, but it should be understood that the system claimed herein is not limited to include two water pumps arranged in parallel, and any system including at least two water pumps arranged in parallel is within the scope of the present application.
Fig. 1 is a schematic structural diagram of a multi-pump water supply control system according to an embodiment of the present application, as shown in fig. 1, the system includes: at least two pump bodies 110, a pressure detector 120, and a controller 130, wherein:
each pump body 110 includes: a main circuit 111 and a control circuit 112; the main circuit 111 includes: the frequency converter 113, the water pump 114 and the switch 141 are connected in series through cables, the switch 141, the frequency converter 113 and the water pump 114 are arranged in series, and the frequency converter 113 is connected with the control circuit 112.
Alternatively, in an embodiment of the present application, the switch 141 may be an air switch, and may also be another type of switch, which is not limited herein.
The controller 130 is electrically connected to the pressure detector 120, and the controller 130 is connected to the control circuit 112 in each of the pump bodies 110.
The control circuit 112 is configured to implement interaction between the pump body 110 and the controller 130, and the control circuit 112 may obtain an instruction sent by the controller 130, and may also obtain related data of the pump body 110 and send the data to the controller 130.
Optionally, the controller 130 and the control circuit 112 in each pump body 110 may be connected through a wireless connection or an electrical signal, and the specific connection mode is designed according to the needs of the user, and the application is not limited herein.
At least two pump bodies 110 in the multi-pump water supply control system 100 are arranged in parallel, and are commonly connected with a water inlet pipe and a water outlet pipe, and the pressure detector 120 is arranged at the water outlet of the water outlet pipe.
Wherein, pressure detector 120 sets up and goes out at the delivery port, can detect the delivery pressure of pump body 110 delivery port department, if pump body 110 breaks down, then can lead to the delivery pressure of delivery port department not enough, or does not have rivers to go out, and pressure detector 120 detects the water pressure of delivery port department in real time, can guarantee stable constant voltage water supply, in case detect that water pressure is not enough, then in time switch pump body 110.
Optionally, in an embodiment of the present application, the number of the pump bodies 110 is two, but the number of the pump bodies 110 may also be three, four, or more, and the number of the specific pump bodies 110 is designed according to user needs, and the present application is not limited at all, and only needs that the number of the pump bodies 110 is at least two, and the pump bodies 110 are in a parallel structure.
The controller 130 is configured to receive the pressure value detected by the pressure detector 120, determine that the currently operating pump body 110 has a fault if the pressure value is less than or equal to a preset pressure threshold, and send a switching instruction to each pump body 110, where the switching instruction is used to close the currently operating pump body 110 and open one pump body 110 of the other pump bodies.
The preset pressure threshold is preset for the lowest pressure required by the user to normally supply water according to the current pump body 110, and the preset pressure threshold can be modified according to the user requirement.
Optionally, when the remaining pump bodies 110 are multiple pump bodies 110, one pump body 110 may be selected from the remaining pump bodies 110 as the pump body 110 to be opened according to a preset priority, after the currently operating pump body 110 fails, the controller 130 sends a switching instruction to the control circuit 112 of the currently operating pump body 110 and the control circuit 112 of the pump body 110 to be opened, and each control circuit 112 controls the corresponding frequency converter 113, so as to implement closing of the currently operating pump body 110 and opening of the pump body 110 to be opened, where the pump body 110 to be opened needs to select a pump body 110 without a failure, and if the currently operating pump body 110 and the pump body 110 to be opened are both the pump bodies 110 with a failure and the remaining pump bodies 110 also have a failure, the controller 130 sends an alarm for prompting that the current system cannot operate normally.
Optionally, the alarm signal may be a voice alarm, an indicator light alarm, a voice alarm and an indicator light alarm, and a specific form of the alarm signal may be designed according to a user's needs, which is not limited herein.
Alternatively, the frequency converter 113, the control circuit 112 and the controller 130 may be integrally disposed in a case, and the water pump 114 may be disposed outside the case for supplying water.
Adopt the multi-pump water supply control system that this application provided, the pressure value of the delivery port department of the outlet pipe of water pump that pressure detector gathered is received in real time through the controller, judge whether the water pump in the current work has the abnormal conditions, if the controller receives the current pressure value and is less than preset pressure threshold, then judge that the pump body in the current work breaks down, the controller and send switching instruction to each pump body, close the pump body in the work that breaks down at present, select one pump body among the all the other pump bodies to open work, because this application judges whether current operating condition appears unusually through the pressure value of delivery port department, and directly control the switching between the pump bodies through the controller, switching efficiency is high, thereby the stability of constant voltage water supply has been guaranteed.
Fig. 2 is a schematic structural diagram of a multi-pump water supply control system according to another embodiment of the present application, fig. 3 is a schematic structural diagram of a pump body circuit diagram according to an embodiment of the present application, and fig. 4 is a schematic structural diagram of a multi-pump water supply control system according to an embodiment of the present application, as shown in fig. 2 to 4:
optionally, the main circuit 111 may further comprise a filter 115 and a thermal relay 116, wherein: the filter 115 is used to reduce harmonics in the alternating current as much as possible so that the waveform becomes smoother; the operation principle of the thermal relay 116 is: the current flowing into the thermal element generates heat, so that the bimetallic strips with different expansion coefficients are deformed, and when the deformation reaches a certain distance, the connecting rod is pushed to act, so that the control circuit is disconnected, the contactor is powered off, the main circuit is disconnected, and the overload protection effect is achieved.
Optionally, the pump body 110 may further include: the circuit is operated. The operation circuit includes: first intermediate relay and operation pilot lamp, first intermediate relay and operation pilot lamp are connected with the normally open contact of converter respectively, and the operation pilot lamp is used for instructing the running state of water pump.
Optionally, each pump body 110 may further include: a fault circuit, the fault circuit comprising: the thermal relay, the second intermediate relay and the fault indicating lamp are respectively connected with a normally open contact of the frequency converter, and the fault indicating lamp is used for indicating that the water pump has faults.
If the pump body 110 which is currently working breaks down, the fault circuit sends a fault signal to the control circuit of the pump body 110, the control circuit sends the fault signal to the controller 130, the controller 130 sends a switching instruction to the pump body 110 which is currently working and the pump body 110 to be started after receiving the fault signal, and meanwhile, a fault indicator light of the pump body 110 which breaks down is turned on and used for indicating that the pump body 110 breaks down, and a maintenance worker is prompted to process the pump body in time.
Alternatively, the fault type may be a power outage or a short circuit or other type of fault.
Optionally, after the fault circuit detects that the current pump body 110 has a fault, the fault circuit may further send fault information to the back-end server through the control circuit 112, and after the manager looks up the fault information in the back-end server, the manager may send a maintenance person to handle the current fault in time, where the fault information may include an identifier and a fault type of the fault pump body, for example, the fault information may be: the pump body numbered 1234 is powered off and should be processed in time. The content included in the specific fault information may be designed according to the user's needs, and the application is not limited herein.
Optionally, the control circuit 112 may further include: the selection switch, the power-off delay relay and the third intermediate relay; the selector switch is connected with the normally open contacts of the intermediate relays in the fault circuits of other pump bodies 110, and the normally open contacts of the intermediate relays in the fault circuits of other pump bodies 110 are also connected with the power-off delay relay and the third intermediate relay respectively through the normally closed contact of the second intermediate relay; and a normally open contact of the third intermediate relay is connected with the frequency converter.
Optionally, each pump body 110 further comprises: an interlock circuit, the interlock circuit comprising: and the fourth intermediate relay is connected with the selector switch. The interlock circuit is configured to ensure that only one pump body 110 is in a working state and the other pump bodies 110 are in a closed or dormant state each time under the condition that the plurality of pump bodies 110 are connected in parallel, so as to ensure smooth operation of the entire system.
In one embodiment of the application, the control circuit 112a of the first water pump consists of a selection switch DZ1, a stop button, a start button, a normally open contact of an intermediate relay (KA3, KA4 and KA9), a time relay KT1 time-delay opening normally open contact, an intermediate relay KA1 normally closed contact, a power-off time-delay relay KT1 coil and an intermediate relay KA3 coil; the operation circuit 117a of the first water pump consists of normally open contacts (RLY11 and RLY13) of a frequency converter of the first water pump, an intermediate relay KA2 and an operation indicator lamp L2; the fault circuit 118a of the first water pump consists of a thermal relay FR1, normally open contacts (RLY15 and RLY13) of a frequency converter of the first water pump, an intermediate relay KA1 and a fault indicator lamp L1; the interlock circuit 119a of the first water pump consists of a selection switch DZ1 and an intermediate relay KA 7.
The control circuit 112b of the second water pump consists of a selection switch DZ2, a stop button, a start button, a normally open contact of an intermediate relay (KA1, KA6 and KA10), a time relay KT2 time-delay disconnection normally open contact, an intermediate relay KA4 normally closed contact, a power-off time-delay relay KT2 coil and an intermediate relay KA6 coil; the operation circuit 117b of the second water pump consists of normally open contacts (RLY21 and RLY23) of a frequency converter of the second water pump, an intermediate relay KA5 and an operation indicator lamp L4; the fault circuit 118b of the second water pump consists of a thermal relay FR2, normally open contacts (RLY25 and RLY13) of a frequency converter of the second water pump, an intermediate relay KA4 and a fault indicator lamp L3; the interlock circuit 119b of the second water pump consists of a selection switch DZ2 and an intermediate relay KA 8.
Optionally, the controller 130 may further include: at least two fifth intermediate relays (KA9, KA 10); the selection switch is also connected with a normally open contact of a fifth intermediate relay; the normally open contact of the fifth intermediate relay is also connected with the power-off delay relay and the third intermediate relay respectively through the normally closed contact of the second intermediate relay; and each fifth intermediate relay is connected with the controller.
Fig. 5 is a schematic structural diagram of a remote control circuit according to an embodiment of the present application, and as shown in fig. 5, the system may further include a remote control circuit 140, where the remote control circuit 140 includes: the pressure sensor comprises a switch 141, a touch screen 142 and a remote controller 143, wherein the switch 141, the touch screen 142 and the remote controller 143 are electrically connected, the touch screen 142 is connected with the controller 130, and the touch screen 142 is used for displaying a pressure value and/or a preset pressure threshold value detected by the pressure detector 120.
Alternatively, in an embodiment of the present application, the switch 141 may be an air switch, and may also be another type of switch, which is not limited herein.
Wherein, the remote control circuit 140 can be disposed at a place far away from the multi-pump water supply control system, such as: in the control room, the user can realize the remote control of the multi-pump water supply control system through the remote control circuit 140.
Optionally, the touch screen 142 and the controller 130 may be electrically connected or wirelessly connected, which is specifically designed according to the user's needs, and the present application is not limited herein.
Optionally, a buzzer may be further disposed on the remote control circuit 140, and the buzzer alarms in time after the fault signal is detected.
The selection switch is used to select a remote control, i.e., a control of the system by the remote control circuit 140, or a near control, i.e., a control of the system directly by the controller 130 disposed near the system.
Fig. 6 is a schematic flowchart of a multi-pump water supply control method according to an embodiment of the present application, and as shown in fig. 6, the method includes:
s201: the controller receives the pressure value detected by the pressure detector.
The pressure value is detected by a pressure detector arranged at the water outlet of the pump body in real time and is used for indicating the water pressure at the current water outlet.
S202: the controller judges whether the pressure value is larger than a preset pressure threshold value.
The preset pressure threshold value is preset according to the water pressure required by normal water supply of a user and can be adjusted according to the needs of the user, and the method and the device are not limited.
If the pressure value is less than or equal to the preset pressure threshold value, determining that the currently working pump body has a fault, and executing S203: the controller sends a switching instruction to each pump body.
If the pressure value is greater than the preset pressure threshold value, the pump body is in a normal working state, the water pressure can maintain stable constant-pressure water supply, if the pressure value is less than or equal to the preset pressure threshold value, the current working pump body is in a fault, and the water pressure is insufficient to maintain stable constant-pressure water supply, so that the controller sends a switching instruction, wherein the switching instruction is used for closing the current working pump body and opening one of the other pump bodies to ensure stable constant-pressure water supply.
Optionally, if the currently operating pump body is abnormal, for example: and if the power is cut off, short circuit or other faults occur, the control circuit of the currently working pump body sends an abnormal signal to the controller, and the controller sends a switching instruction to each pump body after receiving the abnormal signal.
The method provided in this embodiment is applied to the system provided in the above embodiment, and the implementation manner thereof is the same as that of the above embodiment, so that the advantageous effects brought by the method are not described herein again.
Fig. 7 is a schematic structural diagram of a multi-pump water supply control device according to an embodiment of the present application, and as shown in fig. 7, the device includes: a receiving module 301, a judging module 302 and a sending module 303, wherein:
the receiving module 301 is configured to receive a pressure value detected by the pressure detector.
The determining module 302 is configured to determine whether the pressure value is greater than a preset pressure threshold, and if the pressure value is less than or equal to the preset pressure threshold, determine that the pump body currently operating fails.
The sending module 303 is configured to send a switching instruction to each pump body, where the switching instruction is used to close a currently operating pump body and open one of the other pump bodies.
The above-mentioned apparatus is used for executing the method provided by the foregoing embodiment, and the implementation principle and technical effect are similar, which are not described herein again.
These above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when one of the above modules is implemented in the form of a processing element scheduler code, the processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
Fig. 8 is a schematic structural diagram of a multi-pump water supply control device according to an embodiment of the present disclosure, where the multi-pump water supply control device may be integrated in a terminal device or a chip of the terminal device.
The multi-pump water supply control apparatus includes: a processor 501, a storage medium 502, and a bus 503.
The processor 501 is used for storing a program, and the processor 501 calls the program stored in the storage medium 502 to execute the method embodiment corresponding to fig. 6. The specific implementation and technical effects are similar, and are not described herein again.
Optionally, the present application also provides a program product, such as a storage medium, on which a computer program is stored, including a program, which, when executed by a processor, performs the method embodiment corresponding to fig. 6 described above.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to perform some steps of the methods according to the embodiments of the present application. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Claims (10)
1. A multi-pump water supply control system, the system comprising: at least two pump bodies, pressure detector and controller, wherein:
each of the pump bodies includes: a main circuit and a control circuit; the main circuit comprises: the frequency converter, the water pump and the switch are connected in series through cables, and the frequency converter is connected with the control circuit;
the controller is connected with the pressure detector and the control circuit in each pump body;
the at least two pump bodies are arranged in parallel and are connected with a water inlet pipe and a water outlet pipe together, and the pressure detector is arranged at a water outlet of the water outlet pipe;
the controller is used for receiving the pressure value detected by the pressure detector, if the pressure value is smaller than or equal to a preset pressure threshold value, the fault of the currently working pump body is judged, the controller sends a switching instruction to each pump body, and the switching instruction is used for closing the currently working pump body and opening one of the other pump bodies.
2. The system of claim 1, wherein each of the pump bodies further comprises: operating the circuit; the operation circuit includes: the first intermediate relay and the operation indicating lamp are respectively connected with the normally open contact of the frequency converter, and the operation indicating lamp is used for indicating the operation state of the water pump.
3. The system of claim 1, wherein each of the pump bodies further comprises: a fault circuit, the fault circuit comprising: the heat relay, the second intermediate relay and the fault indicator lamp are respectively connected with a normally open contact of the frequency converter, and the fault indicator lamp is used for indicating that the water pump has a fault.
4. The system of claim 3, wherein the control circuit comprises: the selection switch, the power-off delay relay and the third intermediate relay; the selector switch is connected with the normally open contacts of the intermediate relays in the fault circuits of other pump bodies, and the normally open contacts of the intermediate relays in the fault circuits of other pump bodies are also connected with the power-off delay relay and the third intermediate relay respectively through the normally closed contact of the second intermediate relay;
and the normally open contact of the third intermediate relay is connected with the frequency converter.
5. The system of claim 4, wherein each of the pump bodies further comprises: an interlock circuit, the interlock circuit comprising: a fourth intermediate relay connected with the selection switch.
6. The system of claim 4, wherein the controller comprises: at least two fifth intermediate relays; the selection switch is also connected with a normally open contact of the fifth intermediate relay; the normally open contact of the fifth intermediate relay is also connected with the power-off delay relay and the third intermediate relay respectively through the normally closed contact of the second intermediate relay;
each of the fifth intermediate relays is connected to the controller.
7. The system of claim 6, further comprising a remote control circuit, the remote control circuit comprising: the touch screen is connected with the controller; the touch screen is used for displaying the pressure value detected by the pressure detector and/or a preset pressure threshold value.
8. A multi-pump water supply control method applied to the system of any one of claims 1 to 7, the method comprising:
the controller receives the pressure value detected by the pressure detector;
the controller judges whether the pressure value is larger than a preset pressure threshold value or not;
if the pressure value is smaller than or equal to the preset pressure threshold value, judging that the currently working pump body fails, and sending a switching instruction to each pump body by the controller; and the switching instruction is used for closing the pump body which works at present and opening one of the other pump bodies.
9. The method of claim 8, wherein the method further comprises:
and if the currently working pump body is abnormal, the control circuit of the currently working pump body sends an abnormal signal to the controller, and the controller sends the switching instruction to each pump body after receiving the abnormal signal.
10. A multi-pump water supply control apparatus, the apparatus comprising: receiving module, judging module and sending module, wherein:
the receiving module is used for receiving the pressure value detected by the pressure detector;
the judging module is used for judging whether the pressure value is greater than a preset pressure threshold value; if the pressure value is smaller than or equal to a preset pressure threshold value, judging that the currently working pump body has a fault;
the sending module is used for sending a switching instruction to each pump body, and the switching instruction is used for closing the currently working pump body and opening one of the other pump bodies.
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| CN201910957070.9A CN110725366A (en) | 2019-10-08 | 2019-10-08 | Multi-pump water supply control system, method and device |
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