CN116661366A - Control method for secondary water supply and related equipment - Google Patents

Control method for secondary water supply and related equipment Download PDF

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Publication number
CN116661366A
CN116661366A CN202310594894.0A CN202310594894A CN116661366A CN 116661366 A CN116661366 A CN 116661366A CN 202310594894 A CN202310594894 A CN 202310594894A CN 116661366 A CN116661366 A CN 116661366A
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China
Prior art keywords
water supply
flow
data
pressure
value
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Pending
Application number
CN202310594894.0A
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Chinese (zh)
Inventor
孙建彬
付炜炜
任宏卿
钟逵
李炯
王峰
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Zhejiang Supcon Information Industry Co Ltd
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Zhejiang Supcon Information Industry Co Ltd
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Priority to CN202310594894.0A priority Critical patent/CN116661366A/en
Publication of CN116661366A publication Critical patent/CN116661366A/en
Pending legal-status Critical Current

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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 or valves, in the pipe systems
    • E03B7/078—Combined units with different devices; Arrangement of different devices with respect to each other
    • 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
    • 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
    • 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 or valves, in the pipe systems
    • E03B7/072—Arrangement of flowmeters
    • 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 or valves, in the pipe systems
    • E03B7/075—Arrangement of devices for control of pressure or flow rate
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • G05B19/054—Input/output
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/10—Plc systems
    • G05B2219/11—Plc I-O input output
    • G05B2219/1161—Signal processing, detect or deliver analog signals
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Structural Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Control Of Fluid Pressure (AREA)
  • Flow Control (AREA)

Abstract

The application provides a control method and related equipment for secondary water supply, which are applied to the technical field of secondary water supply, wherein the method comprises the following steps: acquiring pressure data and flow data in a water supply pipeline; judging the water supply condition in the current water supply pipeline according to the pressure data and the flow data; and providing secondary water supply service according to the judging result. Based on the pressure data and the flow data in the water supply pipeline, the water demand in the building can be accurately judged, and then the secondary water supply service is performed according to the judging result. Ensuring the water cut-off phenomenon caused by pump cut-off when the actual useful water behavior of the building occurs; the pump is stopped at proper time when the actual useless water behavior of the building occurs, thereby realizing the purposes of saving energy, reducing consumption, reducing the running load of equipment and prolonging the service life of the equipment.

Description

Control method for secondary water supply and related equipment
Technical Field
The application relates to the technical field of secondary water supply, in particular to a control method and related equipment for secondary water supply.
Background
With the development of economy, high-rise building construction in cities is increased continuously, and secondary water supply becomes an indispensable ring for meeting urban water demand. When the demands of domestic drinking water in civil and industrial buildings on water pressure and water quantity exceed the capacity of urban public water supply or self-built facility water supply network, the water supply mode of supplying users or self-use water through storage, pressurization and other facilities and pipelines is called secondary water supply.
In a related building secondary water supply control system, the water consumption condition in a building is generally judged according to the pipeline pressure in a water supply pipeline, so as to control the start and stop of a water pump. However, the actual water consumption condition of the building cannot be accurately judged through the pipeline pressure, so that the water supply condition and the water consumption condition are not uniform, the start and stop of the water pump cannot be accurately controlled, the energy is wasted, and the equipment does not work.
Disclosure of Invention
In view of this, the embodiment of the application provides a control method for secondary water supply and related equipment, which aims to accurately judge the water consumption condition in a building and provide secondary water supply.
In a first aspect, an embodiment of the present application provides a method for controlling secondary water supply, the method including:
acquiring pressure data and flow data in a water supply pipeline;
judging the current water supply condition in the water supply pipeline according to the pressure data and the flow data;
and providing secondary water supply service according to the judging result.
Preferably, the determining the current water supply condition in the water supply pipeline according to the pressure data and the flow data includes:
comparing the pressure data with a pressure set value, wherein the pressure set value is a pressure value in the water supply pipeline when the highest-level user in the building normally uses water;
if the difference value between the pressure data and the pressure set value is larger than the pressure detection error value, judging that no water is supplied to the water supply pipeline currently;
and if the difference value between the pressure data and the pressure set value is smaller than or equal to the pressure detection error value, judging the current water supply condition in the water supply pipeline according to the flow data.
Preferably, the flow data at least includes real-time flow rate data, and the judging the current water supply condition in the water supply pipeline according to the flow data includes:
if the flow data also comprises accumulated flow signals and/or the real-time flow rate data is greater than or equal to a flow rate set value, judging that water supply conditions exist in the current water supply pipeline; the accumulated flow signal is a signal generated when the flow in the water supply pipeline reaches a water supply flow threshold value, and the water supply flow threshold value is a water supply flow critical value for judging whether water supply exists in the water supply pipeline or not;
and if the accumulated flow signal is not acquired when the flow data is acquired and the real-time flow rate data is smaller than the flow rate set value, judging that no water is supplied in the water supply pipeline currently.
Preferably, the flow data at least includes real-time flow rate data, and the judging the current water supply condition in the water supply pipeline according to the flow data includes:
if the flow data also comprises an accumulated flow signal and/or the real-time flow rate data is greater than or equal to a flow rate set value, judging that water supply conditions exist in the current water supply pipeline, and resetting the flow rate integral accumulated value; the accumulated flow signal is a signal generated when the flow in the water supply pipeline reaches a water supply flow threshold value, and the water supply flow threshold value is a water supply flow critical value for judging whether water supply exists in the water supply pipeline or not;
if the accumulated flow signal is not acquired when the flow data is acquired, and the real-time flow velocity data is smaller than the flow velocity set value, integrating and accumulating the real-time flow velocity data to obtain a flow velocity integral accumulated value, wherein the flow velocity integral accumulated value is used for representing the water supply flow in a water supply pipeline;
and judging the current water supply condition in the water supply pipeline according to the flow rate integral accumulated value and the water supply flow threshold value.
Preferably, the determining the current water supply condition in the water supply pipeline according to the flow rate integral and accumulated value and the water supply flow threshold value includes:
if the flow rate integral accumulated value is greater than the water supply flow threshold value which is N times, judging that water supply exists in the current water supply pipeline, wherein N is greater than 1;
and if the flow rate integral accumulated value is less than or equal to the water supply flow threshold value which is N times, judging that the current water supply condition in the water supply pipeline is not changed.
Preferably, the method further comprises:
judging whether the pressure data is lower than a pipeline pressure critical value or not, wherein the pipeline pressure critical value is a pressure value of the highest layer of a building when no water is used in the building;
when the pressure data is lower than the pipeline pressure critical value, sending a starting signal to a water pump to enable the pressure data to reach the pipeline pressure critical value;
and when the pressure data is greater than or equal to the pipeline pressure critical value, keeping the state of the water pump unchanged.
Preferably, the providing the secondary water supply service according to the judgment result includes:
when the judging result indicates that the water supply condition exists in the current water supply pipeline, a starting signal is sent to a water pump to supply water;
and when the judging result indicates that no water is supplied to the water supply pipeline currently, sending a stop signal to the water pump to stop water supply.
In a second aspect, an embodiment of the present application provides a secondary water supply control apparatus, the apparatus including:
the acquisition module is used for acquiring pressure data and flow data in the water supply pipeline;
the judging module is used for judging the current water supply condition in the water supply pipeline according to the pressure data and the flow data;
and the control module is used for providing secondary water supply service according to the judging result.
Preferably, the judging module is specifically configured to compare the pressure data with a pressure set value, where the pressure set value is a pressure value in the water supply pipeline when a highest user in the building normally uses water; if the difference value between the pressure data and the pressure set value is larger than the pressure detection error value, judging that no water is supplied to the water supply pipeline currently; and if the difference value between the pressure data and the pressure set value is smaller than or equal to the pressure detection error value, judging the current water supply condition in the water supply pipeline according to the flow data.
Preferably, the judging module is specifically configured to judge that a water supply condition exists in the water supply pipeline currently if the flow data further includes an accumulated flow signal and/or the real-time flow rate data is greater than or equal to a flow rate set value; the accumulated flow signal is a signal generated when the flow in the water supply pipeline reaches a water supply flow threshold value, and the water supply flow threshold value is a water supply flow critical value for judging whether water supply exists in the water supply pipeline or not; and if the accumulated flow signal is not acquired when the flow data is acquired and the real-time flow rate data is smaller than the flow rate set value, judging that no water is supplied in the water supply pipeline currently.
Preferably, the judging module is specifically configured to judge that a water supply condition exists in the current water supply pipeline and clear an integrated accumulated value of the flow velocity if the flow data further includes an accumulated flow signal and/or the real-time flow velocity data is greater than or equal to a flow velocity set value; the accumulated flow signal is a signal generated when the flow in the water supply pipeline reaches a water supply flow threshold value, and the water supply flow threshold value is a water supply flow critical value for judging whether water supply exists in the water supply pipeline or not; if the accumulated flow signal is not acquired when the flow data is acquired, and the real-time flow velocity data is smaller than the flow velocity set value, integrating and accumulating the real-time flow velocity data to obtain a flow velocity integral accumulated value, wherein the flow velocity integral accumulated value is used for representing the water supply flow in a water supply pipeline; and judging the current water supply condition in the water supply pipeline according to the flow rate integral accumulated value and the water supply flow threshold value.
Preferably, the judging module is specifically configured to judge that there is a water supply condition in the water supply pipeline at present if the integrated and accumulated flow rate value is greater than the water supply flow threshold value by N times, where N is greater than 1; and if the flow rate integral accumulated value is less than or equal to the water supply flow threshold value which is N times, judging that the current water supply condition in the water supply pipeline is not changed.
Preferably, the apparatus further comprises:
the adjusting module is used for judging whether the pressure data is lower than a pipeline pressure critical value or not, and the pipeline pressure critical value is a pressure value of the highest layer of the building when no water is used in the building; when the pressure data is lower than the pipeline pressure critical value, sending a starting signal to a water pump to enable the pressure data to reach the pipeline pressure critical value; and when the pressure data is greater than or equal to the pipeline pressure critical value, keeping the state of the water pump unchanged.
Preferably, the control module is specifically configured to send a start signal to the water pump to supply water when the judgment result indicates that there is a water supply condition in the water supply pipeline currently; and when the judging result indicates that no water is supplied to the water supply pipeline currently, sending a stop signal to the water pump to stop water supply.
In a third aspect, an embodiment of the present application provides an apparatus, the apparatus comprising a memory for storing instructions or code and a processor for executing the instructions or code to cause the apparatus to perform the method of controlling secondary water supply according to any one of the preceding first aspects.
In a fourth aspect, an embodiment of the present application provides a computer storage medium having code stored therein, the apparatus running the code implementing the method of controlling secondary water supply of any one of the preceding first aspects when the code is run.
The embodiment of the application provides a control method for secondary water supply. When the method is executed, the pressure data and the flow data in the water supply pipeline are acquired firstly, then the water supply condition in the current water supply pipeline is judged according to the pressure data and the flow data, and finally the secondary water supply service is provided according to the judging result. Therefore, based on the pressure data and the flow data in the water supply pipeline, the water demand in the building can be accurately judged, and then secondary water supply service is performed according to the judging result. Ensuring the water cut-off phenomenon caused by pump cut-off when the actual useful water behavior of the building occurs; the pump is stopped at proper time when the actual useless water behavior of the building occurs, thereby realizing the purposes of saving energy, reducing consumption, reducing the running load of equipment and prolonging the service life of the equipment.
Drawings
In order to more clearly illustrate this embodiment or the technical solutions of the prior art, the drawings that are required for the description of the embodiment or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a secondary water supply device according to an embodiment of the present application;
FIG. 2 is a flow chart of a first secondary water supply control method according to an embodiment of the present application;
FIG. 3 is a flow chart of a second method for controlling secondary water supply according to an embodiment of the present application;
FIG. 4 is a flow chart of a third method for controlling secondary water supply according to an embodiment of the present application;
FIG. 5 is a flow chart of a fourth method for controlling secondary water supply according to an embodiment of the present application;
FIG. 6 is a flowchart of a fifth method for controlling secondary water supply according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a secondary water supply control device according to an embodiment of the present application.
Detailed Description
The main equipment involved in the current urban building secondary water supply system comprises a water storage tank, a water pump, a frequency converter, a PLC (programmable logic controller), a pressure sensor and a flow sensor. The PLC controller acquires pressure data acquired by the pressure sensor, and controls the start and stop of the water pump and adjusts the running frequency of the water pump through the frequency converter based on the pressure data so as to maintain the stability of the pressure of the water supply pipeline and meet the water demand of each floor in the building.
However, the control method in the related art does not consider the actual water consumption in the building, the flow data collected by the flow sensor is only used for statistics, and the control target of the PLC controller is only to maintain the pipeline pressure to meet the requirement, which is as follows:
(1) When the secondary water supply control is carried out, the actual water consumption of the building is not considered, only the pipeline pressure is maintained to meet the requirement, when the water supply pipeline pressure is lower than the lowest pressure critical value, the working frequency of the water pump is increased or the number of the working water pumps is increased, and when the water supply pipeline pressure is higher than the highest pressure critical value, the working frequency of the water pump is reduced or the number of the working water pumps is reduced.
(2) When the secondary water supply control is performed, only water supply pipeline pressure data is used as a water pump stopping condition, and when the difference value between the control pressure and the actual pressure is in a small range and is maintained for a period of time, the water is judged to be free from water in the building, so that the pump is stopped.
The method (1) can not control the water pump to stop working when the water is not used in the building, and the water pump can always run, so that resource waste is caused; the method (2) can not accurately judge whether the building is water or not, the main aim of the control system is to keep the pressure of the water supply pipeline stable, after the control system is regulated stably, the situation that the difference between the control pressure and the actual pressure is smaller can occur, the situation can be that the building is not water-free, and the building water consumption is stable, at the moment, the system can not judge what the situation leads to the pressure stability, and the incorrect judgment can lead to the interruption of the water supply of the building which needs to be supplied, so that the water consumption experience of a user of the building is adversely affected.
Aiming at the technical problems in the prior art, the application provides a secondary water supply control method and related equipment, which can accurately judge the actual condition of building water by combining pressure data and flow data of a water supply pipeline, ensure that the water stopping phenomenon caused by the water stopping phenomenon does not occur when the actual water using behavior of a building occurs, timely stop the pump when the actual water using behavior of the building does not exist, and maintain the basic pressure of a pipeline, thereby realizing the purposes of saving energy, reducing consumption, reducing the running load of the equipment and prolonging the service life of the equipment.
Next, the method provided by the present application is described with reference to a secondary water supply device, as shown in fig. 1, and fig. 1 is a schematic structural diagram of a secondary water supply device provided by an embodiment of the present application. The pressure sensor and the flow sensor are arranged on a water supply pipeline which is assembled by a plurality of water pumps, and pressure data acquired by the pressure sensor are connected into the PLC controller through analog quantity signals of 4-20 mA; the flow data collected by the flow sensor is connected into the PLC controller by an analog quantity signal of 4-20 mA. The water pump is controlled by a frequency converter, the start-stop control and operation feedback of the frequency converter are connected to the PLC controller by a switching value signal, and the frequency regulation and frequency feedback of the frequency converter are connected to the PLC controller by an analog value signal of 4-20 mA.
The PLC controller obtains pressure data and flow data in the water supply pipeline through the pressure sensor and the flow sensor, judges whether water is used in the building or not based on the pressure data and the flow data, namely whether water supply conditions exist in the water supply pipeline or not, and if the water is used in the building, the frequency converter is used for controlling the water pump to work so as to supply water for the building; if no water is used in the building, the frequency converter is used for controlling the level to stop working, and water supply for the building is not needed. By the method, the water demand in the building can be accurately judged based on the pressure data and the flow data in the water supply pipeline, and then secondary water supply service is performed according to the judgment result. Ensuring the water cut-off phenomenon caused by pump cut-off when the actual useful water behavior of the building occurs; the pump is stopped at proper time when the actual useless water behavior of the building occurs, thereby realizing the purposes of saving energy, reducing consumption, reducing the running load of equipment and prolonging the service life of the equipment.
It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 2, fig. 2 is a flowchart of a first secondary water supply control method according to an embodiment of the present application, including:
s201: pressure data and flow data in the water supply pipe are acquired.
The pressure data and the flow data are acquired in real time through a pressure sensor and a flow sensor which are arranged on the water supply pipeline. By acquiring the relevant real-time data in the water supply pipe, the water supply condition in the updated water supply pipe can be judged more accurately.
S202: and judging the water supply condition in the current water supply pipeline according to the pressure data and the flow data.
Judging whether water demand exists in the building based on the pressure data and the flow data acquired in the step S201, for example: whether the pressure data or flow data within the water supply pipe characterizes useful water demand within the building. The accuracy of the judging result can be further improved according to the common judgment of the pressure data and the flow data, and the problem that the judgment is wrong due to the fact that the judgment is only carried out by the pressure data is prevented; and the flow data is fully utilized, the flow data is not used as the basis for counting the water consumption, and the accuracy of the judging result can be verified by utilizing the flow data.
S203: and providing secondary water supply service according to the judging result.
The water supply condition in the water supply pipeline is judged to obtain a judging result, and then the water pump can be controlled according to the judging result to provide secondary water supply service.
Specifically, when the judgment result indicates that the current water supply pipeline has water supply conditions, a starting signal is sent to the water pump to supply water; and when the judging result indicates that no water is supplied to the current water supply pipeline, sending a stop signal to the water pump to stop water supply.
The embodiment of the application provides a control method for secondary water supply. Firstly, pressure data and flow data in a water supply pipeline are acquired, then, the water supply condition in the current water supply pipeline is judged according to the pressure data and the flow data, and finally, secondary water supply service is provided according to the judging result. Therefore, based on the pressure data and the flow data in the water supply pipeline, the water demand in the building can be accurately judged, and then secondary water supply service is performed according to the judging result. Ensuring the water cut-off phenomenon caused by pump cut-off when the actual useful water behavior of the building occurs; the pump is stopped at proper time when the actual useless water behavior of the building occurs, thereby realizing the purposes of saving energy, reducing consumption, reducing the running load of equipment and prolonging the service life of the equipment.
In the embodiment of the present application, other possible implementations of step S202 described in fig. 1 are described below with reference to the accompanying drawings. It should be noted that the implementations presented in the following description are only exemplary and not representative of all implementations of the embodiments of the present application.
Referring to fig. 3, fig. 3 is a flowchart of a second method for controlling secondary water supply according to an embodiment of the present application, including:
step a: pressure data and flow data in the water supply pipe are acquired.
Step b: the pressure data is compared to a pressure set point.
The pressure set point is the pressure value in the water supply pipeline when the highest user in the building normally uses water. By comparing the pressure data with the pressure set point, it can be determined whether there is a water demand in the current building.
Step c: and if the difference value between the pressure data and the pressure set value is larger than the pressure detection error value, judging that no water is supplied to the water supply pipeline currently.
Because the pressure data is connected with the PLC controller by an analog quantity signal of 4-20mA, digital-to-analog conversion is needed, certain error, namely pressure detection error value, can be generated in the connection process. And c, when the difference value between the pressure data and the pressure set value is larger than the pressure detection error value, namely, the sum of the pressure data and the pressure detection error value does not meet the numerical value specified by the pressure set value, judging that the water supply pipeline is not supplied with water, and executing the step e.
Step d: if the difference value between the pressure data and the pressure set value is smaller than the pressure detection error value, judging the current water supply condition in the water supply pipeline according to the flow data.
Similarly, when the difference between the pressure data and the pressure set point is smaller than or equal to the pressure detection error value, the pressure data is indicated to be approximately equal to the pressure set point, and then it is determined that the water supply condition is possible in the water supply pipeline, but the water supply condition is possible to be the condition that the water supply pipeline is actually free of water and the pressure is stable, so that the water supply condition in the current water supply pipeline is further determined according to the flow data, and then the step e is executed.
Step e: and providing secondary water supply service according to the judging result.
The water supply condition in the water supply pipeline is judged based on the pressure data and the pressure set value, and then the water supply condition in the water supply pipeline is judged according to the flow data, so that whether water needs exist in a building can be judged more accurately, and further the water pump is controlled, and the purposes of saving energy, reducing consumption, reducing equipment operation load and prolonging the service life of equipment are achieved.
In another embodiment of the present application, the flow data at least includes real-time flow rate data, and the judging the current water supply condition in the water supply pipeline according to the flow data includes:
if the flow data also comprises accumulated flow signals and/or the real-time flow rate data is greater than or equal to the flow rate set value, judging that the water supply condition exists in the current water supply pipeline; the accumulated flow signal is a signal generated when the flow in the water supply pipeline reaches a water supply flow threshold value, and the water supply flow threshold value is a water supply flow critical value for judging whether water supply condition exists in the water supply pipeline or not;
if the accumulated flow signal is not acquired when the flow data is acquired and the real-time flow rate data is smaller than the flow rate set value, judging that no water is supplied in the current water supply pipeline.
Referring to fig. 4, fig. 4 is a flowchart of a third secondary water supply control method according to an embodiment of the present application.
The accumulated flow signal may indicate that the flow in the water supply pipe has reached a critical value of whether or not the water supply condition exists, when the flow data includes the accumulated flow signal, that is, when the accumulated flow signal is obtained, it means that the water supply condition exists in the water supply pipe; the real-time flow rate data represents the instantaneous rate of water flow in the water supply pipe, and when the real-time flow rate data is greater than or equal to the flow rate set point, it also means that there is a water supply condition in the water supply pipe. Therefore, the flow data also comprises two judging conditions that the accumulated flow signal and the real-time flow rate data are larger than or equal to the flow rate set value, and any one of the two judging conditions is met or satisfied, so that the water supply condition in the water supply pipeline can be judged, and the secondary water supply service is provided according to the judging result.
In contrast, when the flow data is acquired, the accumulated flow signal is not acquired, and when the real-time flow rate data is smaller than the flow rate set value, the condition that water is not supplied in the water supply pipeline is indicated, so that the condition that water is not supplied in the water supply pipeline is judged, and then secondary water supply service is provided according to the judgment result.
By the method, the water supply condition can be accurately judged according to the flow data, and then secondary water supply service is provided according to the judgment result.
In order to eliminate errors generated by digital-to-analog conversion and time delay when the flow data are acquired, the application also provides another method for judging the water supply condition according to the flow data. The flow data at least comprises real-time flow rate data, judges the water supply condition in the current water supply pipeline according to the flow data, and comprises the following steps:
if the flow data also comprises an accumulated flow signal and/or the real-time flow rate data is greater than or equal to the flow rate set value, judging that the current water supply pipeline has water supply conditions, and resetting the flow rate integral accumulated value; the accumulated flow signal is a signal generated when the flow in the water supply pipeline reaches a water supply flow threshold value, and the water supply flow threshold value is a water supply flow critical value for judging whether water supply condition exists in the water supply pipeline or not;
if the accumulated flow signal is not acquired when the flow data is acquired and the real-time flow rate data is smaller than the flow rate set value, integrating and accumulating the real-time flow rate data to obtain a flow rate integral accumulated value, wherein the flow rate integral accumulated value is used for representing the water supply flow in the water supply pipeline;
and judging the water supply condition in the current water supply pipeline according to the flow rate integral accumulated value and the water supply flow threshold value. As shown in fig. 5, fig. 5 is a flowchart of a fourth secondary water supply control method according to an embodiment of the present application.
In the embodiment of the application, when the accumulated flow signal is acquired and/or the real-time flow rate data is greater than or equal to the flow rate set value, the water supply condition in the current water supply pipeline is judged, and the flow rate integral accumulated value is cleared. If the accumulated flow signal is not acquired and the real-time flow rate data is smaller than the flow rate set value, the real-time flow rate data needs to be integrated and accumulated. Because the flow data is connected to the PLC controller by an analog quantity signal of 4-20mA, digital-to-analog conversion is needed, and the flow data has certain delay in the transmission process, a certain delay exists in the flow output transmission process, and errors exist. In order to eliminate the influence of errors on the accuracy of the judgment result, the flow speed integral accumulation value is obtained by carrying out integral accumulation on the real-time flow speed data, and then whether the water supply condition exists in the water supply pipeline is judged according to the flow speed integral accumulation value and the water supply flow threshold value, so that the influence of the errors on the judgment result is reduced, and the accuracy of the judgment result is improved.
Specifically, the method for judging the water supply condition in the current water supply pipeline according to the flow rate integral accumulated value and the water supply flow threshold value comprises the following steps:
if the integrated value of the flow velocity is greater than a water supply flow threshold value which is N times, judging that water supply exists in the current water supply pipeline, wherein N is greater than 1;
and if the integrated and accumulated flow rate value is less than or equal to the N times of water supply flow threshold value, judging that the current water supply condition in the water supply pipeline is not changed.
Referring to fig. 6, fig. 6 is a flowchart illustrating a fifth method for controlling secondary water supply according to an embodiment of the present application.
When the integrated value of the flow rate is greater than the water supply flow threshold value which is N times, indicating that the water is needed in the building, judging that the water supply condition exists in the current water supply pipeline; when the integrated value of the flow rate is smaller than or equal to the water supply flow threshold value which is N times, the water demand in the building is not required, and the condition that water is not supplied in the current water supply pipeline is judged. It should be noted that, N is greater than 1, but specific values may be set according to actual situations. In the embodiment of the application, the value of N can be 2, and when N is equal to 2, the accuracy of the judgment result is higher.
In the embodiment of the application, whether the pressure data is lower than the critical value of the pipeline pressure is also judged, which is as follows:
judging whether the pressure data is lower than a pipeline pressure critical value, wherein the pipeline pressure critical value is a pressure value of the highest layer of the building when no water is used in the building;
when the pressure data is lower than the pipeline pressure critical value, sending a starting signal to the water pump to enable the pressure data to reach the pipeline pressure critical value;
and when the pressure data is greater than or equal to the pipeline pressure critical value, keeping the state of the water pump unchanged.
When the pressure data is lower than the pipeline pressure critical value, the water level is lower in the building, for example, the water level is positioned in a first floor or a second floor, and if the high-rise users in the building need water at this time, the water level needs to be increased to the corresponding floor to supply water. Therefore, whether the pre-pressure data is lower than the pipeline pressure critical value or not, if yes, sending a starting signal to the water pump to enable the pressure data to reach the pipeline pressure critical value; if not, the state of the water pump is kept unchanged. Through the mode, the water level can be kept at the highest level of the building when the building is free of water, so that the water level can respond in time when a high-level user uses water, and the water consumption experience of the user is improved.
The embodiment of the application provides some specific implementation modes of the secondary water supply control method, and based on the specific implementation modes, the application also provides a corresponding device. The apparatus provided by the embodiment of the present application will be described in terms of functional modularization.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a secondary water supply control device according to an embodiment of the present application, where the device includes an acquisition module 701, a judgment module 702, and a control module 703.
An acquisition module 701 for acquiring pressure data and flow data in the water supply pipe;
a judging module 702, configured to judge a current water supply condition in the water supply pipeline according to the pressure data and the flow data;
and a control module 703 for providing a secondary water supply service according to the judgment result.
The embodiment of the application provides a control device for secondary water supply. Firstly, pressure data and flow data in a water supply pipeline are acquired, then, the water supply condition in the current water supply pipeline is judged according to the pressure data and the flow data, and finally, secondary water supply service is provided according to the judging result. Therefore, based on the pressure data and the flow data in the water supply pipeline, the water demand in the building can be accurately judged, and then secondary water supply service is performed according to the judging result. Ensuring the water cut-off phenomenon caused by pump cut-off when the actual useful water behavior of the building occurs; the pump is stopped at proper time when the actual useless water behavior of the building occurs, thereby realizing the purposes of saving energy, reducing consumption, reducing the running load of equipment and prolonging the service life of the equipment.
In this embodiment of the present application, the judging module 702 is specifically configured to compare the pressure data with a pressure set value, where the pressure set value is a pressure value in the water supply pipeline when the highest-level user in the building uses water normally; if the difference value between the pressure data and the pressure set value is larger than the pressure detection error value, judging that no water is supplied to the water supply pipeline currently; and if the difference value between the pressure data and the pressure set value is smaller than or equal to the pressure detection error value, judging the current water supply condition in the water supply pipeline according to the flow data.
In this embodiment of the present application, the judging module 702 is specifically configured to judge that there is a water supply condition in the water supply pipeline if the flow data further includes an accumulated flow signal and/or the real-time flow rate data is greater than or equal to a flow rate set value; the accumulated flow signal is a signal generated when the flow in the water supply pipeline reaches a water supply flow threshold value, and the water supply flow threshold value is a water supply flow critical value for judging whether water supply exists in the water supply pipeline or not; and if the accumulated flow signal is not acquired when the flow data is acquired and the real-time flow rate data is smaller than the flow rate set value, judging that no water is supplied in the water supply pipeline currently.
In the embodiment of the present application, the judging module 702 is specifically configured to judge that there is a water supply condition in the water supply pipeline and clear the integrated accumulated value of the flow rate if the flow rate data further includes an accumulated flow rate signal and/or the real-time flow rate data is greater than or equal to a flow rate set value; the accumulated flow signal is a signal generated when the flow in the water supply pipeline reaches a water supply flow threshold value, and the water supply flow threshold value is a water supply flow critical value for judging whether water supply exists in the water supply pipeline or not; if the accumulated flow signal is not acquired when the flow data is acquired, and the real-time flow velocity data is smaller than the flow velocity set value, integrating and accumulating the real-time flow velocity data to obtain a flow velocity integral accumulated value, wherein the flow velocity integral accumulated value is used for representing the water supply flow in a water supply pipeline; and judging the current water supply condition in the water supply pipeline according to the flow rate integral accumulated value and the water supply flow threshold value.
In this embodiment of the present application, the determining module 702 is specifically configured to determine that a water supply condition exists in the current water supply pipeline if the integrated and accumulated flow rate value is greater than the water supply flow threshold value N times, where N is greater than 1; and if the flow rate integral accumulated value is less than or equal to the water supply flow threshold value which is N times, judging that the current water supply condition in the water supply pipeline is not changed.
In an embodiment of the present application, the apparatus further includes:
the adjusting module is used for judging whether the pressure data is lower than a pipeline pressure critical value or not, and the pipeline pressure critical value is a pressure value of the highest layer of the building when no water is used in the building; when the pressure data is lower than the pipeline pressure critical value, sending a starting signal to a water pump to enable the pressure data to reach the pipeline pressure critical value; and when the pressure data is greater than or equal to the pipeline pressure critical value, keeping the state of the water pump unchanged.
In the embodiment of the application, the control module is specifically configured to send a start signal to the water pump to supply water when the judgment result indicates that the water supply pipeline has a water supply condition currently; and when the judging result indicates that no water is supplied to the water supply pipeline currently, sending a stop signal to the water pump to stop water supply.
The embodiment of the application also provides corresponding equipment and a computer storage medium, which are used for realizing the scheme provided by the embodiment of the application.
The device comprises a memory and a processor, wherein the memory is used for storing instructions or codes, and the processor is used for executing the instructions or codes so as to enable the device to execute the secondary water supply control method according to any embodiment of the application.
The computer storage medium stores codes, and when the codes are executed, the equipment for executing the codes realizes the control method for secondary water supply according to any embodiment of the application.
The "first" and "second" in the names of "first", "second" (where present) and the like in the embodiments of the present application are used for name identification only, and do not represent the first and second in sequence.
From the above description of embodiments, it will be apparent to those skilled in the art that all or part of the steps of the above described example methods may be implemented in software plus general hardware platforms. Based on such understanding, the technical solution of the present application may be embodied in the form of a software product, which may be stored in a storage medium, such as a read-only memory (ROM)/RAM, a magnetic disk, an optical disk, etc., and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network communication device such as a router) to perform the method according to the embodiments or some parts of the embodiments of the present application.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for the device embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and reference is made to the description of the method embodiments for relevant points. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present application without undue burden.
The foregoing description of the exemplary embodiments of the application is merely illustrative of the application and is not intended to limit the scope of the application.

Claims (10)

1. A method of controlling secondary water supply, the method comprising:
acquiring pressure data and flow data in a water supply pipeline;
judging the current water supply condition in the water supply pipeline according to the pressure data and the flow data;
and providing secondary water supply service according to the judging result.
2. The method of claim 1, wherein said determining a current water supply condition in said water supply line based on said pressure data and said flow data comprises:
comparing the pressure data with a pressure set value, wherein the pressure set value is a pressure value in the water supply pipeline when the highest-level user in the building normally uses water;
if the difference value between the pressure data and the pressure set value is larger than the pressure detection error value, judging that no water is supplied to the water supply pipeline currently;
and if the difference value between the pressure data and the pressure set value is smaller than or equal to the pressure detection error value, judging the current water supply condition in the water supply pipeline according to the flow data.
3. The method of claim 2, wherein the flow data includes at least real-time flow rate data, and wherein determining the current water supply in the water supply line based on the flow data comprises:
if the flow data also comprises accumulated flow signals and/or the real-time flow rate data is greater than or equal to a flow rate set value, judging that water supply conditions exist in the current water supply pipeline; the accumulated flow signal is a signal generated when the flow in the water supply pipeline reaches a water supply flow threshold value, and the water supply flow threshold value is a water supply flow critical value for judging whether water supply exists in the water supply pipeline or not;
and if the accumulated flow signal is not acquired when the flow data is acquired and the real-time flow rate data is smaller than the flow rate set value, judging that no water is supplied in the water supply pipeline currently.
4. The method of claim 2, wherein the flow data includes at least real-time flow rate data, and wherein determining the current water supply in the water supply line based on the flow data comprises:
if the flow data also comprises an accumulated flow signal and/or the real-time flow rate data is greater than or equal to a flow rate set value, judging that water supply conditions exist in the current water supply pipeline, and resetting the flow rate integral accumulated value; the accumulated flow signal is a signal generated when the flow in the water supply pipeline reaches a water supply flow threshold value, and the water supply flow threshold value is a water supply flow critical value for judging whether water supply exists in the water supply pipeline or not;
if the accumulated flow signal is not acquired when the flow data is acquired, and the real-time flow velocity data is smaller than the flow velocity set value, integrating and accumulating the real-time flow velocity data to obtain a flow velocity integral accumulated value, wherein the flow velocity integral accumulated value is used for representing the water supply flow in a water supply pipeline;
and judging the current water supply condition in the water supply pipeline according to the flow rate integral accumulated value and the water supply flow threshold value.
5. The method of claim 4, wherein said determining a current water supply condition in said water supply line based on said flow rate integral and said water supply flow rate threshold comprises:
if the flow rate integral accumulated value is greater than the water supply flow threshold value which is N times, judging that water supply exists in the current water supply pipeline, wherein N is greater than 1;
and if the flow rate integral accumulated value is less than or equal to the water supply flow threshold value which is N times, judging that the current water supply condition in the water supply pipeline is not changed.
6. The method according to claims 1-5, characterized in that the method further comprises:
judging whether the pressure data is lower than a pipeline pressure critical value or not, wherein the pipeline pressure critical value is a pressure value of the highest layer of a building when no water is used in the building;
when the pressure data is lower than the pipeline pressure critical value, sending a starting signal to a water pump to enable the pressure data to reach the pipeline pressure critical value;
and when the pressure data is greater than or equal to the pipeline pressure critical value, keeping the state of the water pump unchanged.
7. The method of claims 1-5, wherein providing the secondary water service according to the determination result comprises:
when the judging result indicates that the water supply condition exists in the current water supply pipeline, a starting signal is sent to a water pump to supply water;
and when the judging result indicates that no water is supplied to the water supply pipeline currently, sending a stop signal to the water pump to stop water supply.
8. A secondary water supply control device, the device comprising:
the acquisition module is used for acquiring pressure data and flow data in the water supply pipeline;
the judging module is used for judging the current water supply condition in the water supply pipeline according to the pressure data and the flow data;
and the control module is used for providing secondary water supply service according to the judging result.
9. A computer device, comprising: a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the method of controlling a secondary water supply as claimed in any one of claims 1 to 7 when the computer program is executed.
10. A computer storage medium having instructions stored therein which, when executed on a terminal device, cause the terminal device to perform the method of controlling secondary water supply as claimed in any one of claims 1 to 7.
CN202310594894.0A 2023-05-23 2023-05-23 Control method for secondary water supply and related equipment Pending CN116661366A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117627115A (en) * 2023-11-07 2024-03-01 湖南金龙给水设备有限公司 Secondary water supply system and method with water pressure regulation and early warning functions

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117627115A (en) * 2023-11-07 2024-03-01 湖南金龙给水设备有限公司 Secondary water supply system and method with water pressure regulation and early warning functions
CN117627115B (en) * 2023-11-07 2024-05-14 湖南金龙给水设备有限公司 Secondary water supply system and method with water pressure regulation and early warning functions

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