CN104818747B - Town and country are for water integrated ductwork pressure Optimized Operation intelligence control system and using method - Google Patents
Town and country are for water integrated ductwork pressure Optimized Operation intelligence control system and using method Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 claims abstract description 71
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- 239000000463 material Substances 0.000 claims description 3
- 238000004659 sterilization and disinfection Methods 0.000 claims description 3
- 239000008400 supply water Substances 0.000 claims description 3
- 239000008399 tap water Substances 0.000 claims description 3
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Abstract
The invention provides a kind of town and country for water integrated ductwork pressure Optimized Operation intelligence control system and using method thereof, wherein town and country comprise the intelligent water system of JBB, ZJBB system, server GPRS transmission system and user's water status monitoring reponse system for water integrated ductwork pressure Optimized Operation intelligence control system; The using method of this system comprises the following aspects: one, the mode of operation of the intelligent water system of JBB; The mode of operation of two ZJBB systems; Wherein the intelligent water system of JBB, ZJBB system respectively have mode of operation in three.
Description
Technical Field
The invention relates to an urban and rural water supply control system, in particular to an urban and rural water supply integrated pipe network pressure optimization scheduling intelligent control system and a using method thereof.
Background
In a general constant pressure water supply system, there is a mathematical model of water supply:
wherein:
: water supply pressure of water pump set
: water pressure for user
: head loss during water supply
K: coefficient of resistance of pipe network
Q: instantaneous outlet flow of water supply end
And Qm: maximum outlet flow of water supply end
In the same water supply network, the K value is constant, and the water supply pressure in the water pump unit is constantAt constant time, water pressure for userWhen the instantaneous outlet flow Q of the water supply end is increased, the head loss is increased, the water pressure of a user is reduced, and the quality and the reliability of water supply are influenced. The constant pressure water supply system has the following problems.
1 in different seasons of the year and different time periods of the same day, the water consumption of the whole user is changed at any moment, the time for generating larger flow is shorter, the general situation is less than 1/4, and the control mode of constant pressure water supply keeps the water supply pressure of the water supply pump roomConstant, the water pressure at the user for most of the time periodIs larger than the water pressure requirement of the user, consumes more electric energy and causes unnecessary waste.
In the scheme of the constant-pressure water supply, the pressure transmitter is arranged near the outlet of the water pump, so that the loss of a water head in a pipeline is ignored, and the actual water demand of a terminal user is not considered.
3 the leakage of the pipe network in the water supply system is in direct proportion to the water supply pressure, and the problem is neglected in the constant pressure water supply scheme.
Disclosure of Invention
In view of the above disadvantages of the prior art, the present invention provides an intelligent control system for pressure optimization and scheduling of an integrated urban and rural water supply pipe network and a use method thereof, which are used for solving the problems of water supply safety and energy waste caused by constant pressure water supply in the prior art.
In order to achieve the above objects and other related objects, an aspect of the present invention is to provide an intelligent control system for pressure optimization and scheduling of an integrated urban and rural water supply pipe network.
The invention discloses an urban and rural water supply integrated pipe network pressure optimization scheduling intelligent control system, which comprises: the system comprises a secondary pump room intelligent water supply system (hereinafter referred to as JBB intelligent water supply system), a pressurizing station intelligent control system (hereinafter referred to as ZJBB system), a server, a GPRS transmission system and a user water use state monitoring feedback system of a water production plant;
the JBB intelligent water supply system comprises a water pump unit and a control cabinet;
the water pump unit is formed by connecting a plurality of water pump branches in parallel, and each water pump branch is formed by sequentially connecting a butterfly valve, a water pump and an electric butterfly valve in series; a water inlet of the water pump unit is communicated with the clean water tank through a valve and a main pipeline, and a water outlet of the water pump unit is connected with a water inlet of the ZJBB system through the main pipeline; the water outlet pipeline of the water pump unit is provided with a pressure transmitter for measuring the water outlet pressure of the water pump unit to form a water outlet pressure monitoring point (for convenience of description, the pressure at the point is H)2Represents); the control cabinet mainly comprises a frequency converter and a PLC; the control cabinet is connected with the server through a signal wire, connected with the water pump unit through a control circuit and connected with the pressure transmitter through a signal wire;
the signal input end and the signal output end of the JBB intelligent water supply system are respectively connected with the server; the input signals of the JBB intelligent water supply system comprise remote pressure monitoring point signals, water outlet pressure monitoring point signals and running state signals of a water pump unit and a valve, and the output signals comprise running state signals of the water pump unit and the valve; the running state signal comprises the state of a valve of the water pump unit, the switching state of a water pump of the water pump unit, the running frequency of the water pump unit and the current of the water pump unit; the remote pressure monitoring point is a water inlet pressure monitoring point of a user branch in the user water state monitoring feedback system;
the ZJBB system comprises a water pump unit, a control cabinet and a bypass loop;
the water pump unit is formed by connecting a plurality of water pump branches in parallel, and each water pump branch is formed by sequentially connecting a butterfly valve, a water pump and an electric butterfly valve in series;
a water inlet of the water pump unit is communicated with a water outlet of the JBB intelligent water supply system through a main pipeline, and a water outlet of the water pump unit is connected with a water inlet of the user water consumption state monitoring feedback system through the main pipeline; pressure transmitters are respectively arranged on a water inlet pipeline and a water outlet pipeline of the water pump unit and are connected with the control cabinet through signal lines to form a water inlet pressure monitoring point and a water outlet pressure monitoring point (the pressure of the water inlet pressure point is H)1H for pressure of outlet water pressure monitoring point3Represents);
the control cabinet comprises a frequency converter, a PLC, a transmitter and a receiver; the control cabinet outputs signals to the GPRS transmission system through the transmitter and receives input signals of the GPRS transmission system through the receiver; is connected with the water pump unit through a control circuit;
the bypass loop is connected with a main pipeline in parallel with the water pump unit; an electric butterfly valve is arranged on the bypass loop and connected with the control cabinet through a control circuit;
the input signals of the ZJBB system comprise a remote pressure monitoring point signal, a water inlet pressure monitoring point signal, a water outlet pressure monitoring point signal, an operation state signal of a bypass loop electric butterfly valve and operation state signals of a water pump unit and a water pump unit electric butterfly valve; the output signals of the ZJBB system comprise state signals of an electric butterfly valve of a bypass loop, a water pump unit and an electric butterfly valve of the water pump unit; the running state signals of the water pump unit and the electric butterfly valve of the water pump unit comprise the state of the electric butterfly valve of the water pump unit, the switching state of a water pump of the water pump unit, and the running frequency and current of the water pump unit;
the server comprises a hardware server, a transmitter, a receiver and intelligent control software for pipe network optimization scheduling; the intelligent control software for pipe network optimized dispatching consists of data analysis software and pipeline pressure optimized dispatching software, wherein the data analysis software analyzes a data packet by establishing system service and stores the data packet in a database management system; the pipeline pressure optimization scheduling software makes a water supply scheme and adjusts the water supply pressure by comprehensively analyzing data such as a pipeline network structure, pressure, flow, water quality, meteorological phenomena and the like, and the server is connected with the JBB intelligent water supply system through a signal line and can receive input signals of the JBB intelligent water supply system and output signals to the JBB intelligent water supply system; the server can receive input signals of the GPRS transmission system through the receiver and output signals to the GPRS transmission system through the transmitter;
the GPRS transmission system consists of a data acquisition unit, a GPRS network and a communication protocol; the data acquisition unit remotely transmits acquired data such as pressure, flow and water quality to the server by using a singlechip technology and a mobile network and adopting a Modbus communication protocol;
the user water use state monitoring feedback system comprises a pressure transmitter and a data acquisition unit;
the pressure transmitter comprises a pressure sensor, a measuring circuit and a process connecting piece, is arranged on a water inlet pipeline of a user branch to form a remote pressure monitoring point, and is used for monitoring a remote pressure point signal (the pressure of the remote pressure monitoring point is H for pressure below)4Representing), the pressure transmitter is connected with the data acquisition unit through a signal wire; the data acquisition unit comprises a data acquisition module and a GPRS transmission module, is connected with the GPRS transmission system through the GPRS transmission module and outputs data to the GPRS transmission system.
Preferably, the diameter and the material of the pipeline of the bypass loop are the same as those of the main pipeline.
Preferably, a stop valve is arranged on a water inlet pipeline of a water pump unit of the ZJBB intelligent water supply system.
Preferably, a water outlet pipeline of a water pump unit of the ZJBB intelligent water supply system is provided with a disinfection device.
Preferably, the water pump unit of the JBB intelligent water supply system includes three water pump branches.
Preferably, the water pump set of the ZJBB system includes two water pump branches.
Preferably, each user branch is provided with a user water use state monitoring feedback system.
The invention provides a use method of an urban and rural water supply integrated pipe network pressure optimization scheduling intelligent control system, which comprises the following aspects:
working mode of JBB intelligent water supply system
The following three operation modes are provided:
1. pressurizing unit water supply
When the control cabinet receives H41And H2Signal if H2Fail to satisfy the economic pressure H41When the pressure is provided by a remote pressure monitoring point, the control cabinet sends instructions for starting the water pump and opening the electric butterfly valve to the water pump unit, and the lowest required pressure H is realized by adopting a stepped variable-frequency variable-pressure technology to adjust the operating frequency of the water pump through a PID control technology in a PLC (programmable logic controller)42(the pressure is provided by a remote pressure monitoring point); the step-type variable frequency and voltage technology is used for setting PID target values in a step-by-step time-sharing mode to enable the operating frequency of the water pump to rise in a step-type mode until H is met42The requirements of (1); wherein,
the economic pressure H41Refers to a remote pressure monitoring point H4In order to meet the minimum requirements of usersOr a lower limit of the pressure at which the unit is pressurized;
the minimum required pressure H42Refers to a remote pressure monitoring point H4The tip pressure under the condition of optimal economic flow for user satisfaction, namely the pressure of the most unfavorable point or important user point, is close to the most practical satisfaction degree of the user on the service water head of the tap water.
2. Delayed water supply
When H is present2Can not satisfy H42The server sends out an early warning signal to inform workers to find out the running condition of the pipe network, and if the running condition is abnormal, the pump needs to be stopped for processing; if no abnormity exists, the control cabinet sends instructions for starting the water pump and opening the electric butterfly valve to the water pump unit, the operation frequency of the water pump is adjusted by adopting a stepped variable-frequency variable-voltage technology through a PID control technology in the PLC, and the lowest required pressure H is realized42(the pressure is provided by a remote pressure monitoring point).
3. Constant pressure water supply
When the server cannot receive a signal of a remote pressure monitoring point for a long time, the server sends a constant-pressure water supply instruction to the control cabinet, and the constant-pressure value is set by a user; when the constant voltage value is larger than H2When the water pump is started, the control cabinet sends a command of starting the water pump and opening the electric butterfly valve to the water pump unit, and the running frequency of the water pump is adjusted by adopting a stepped variable-frequency variable-voltage technology through a PID (proportion integration differentiation) control technology in a PLC (programmable logic controller) until H2Equal to the constant pressure value, realizing constant pressure water supply; when the constant voltage value is less than H2In the process, the control cabinet adopts a stepped variable-frequency variable-voltage technology to adjust the operating frequency of the water pump through a PID control technology in a PLC (programmable logic controller) until the operating frequency reaches H2Equal to the constant pressure value, realizes the constant pressure water supply.
Working mode of two, ZJBB system
The following three working modes are provided;
1. direct water supply by bypass circuit
When the control cabinet receives H3And H41SignalWhen H is present3Can satisfy H41When the water pump is started, the control cabinet sends an opening instruction to the electric butterfly valve in the pipeline loop, sends a closing instruction to the water pump of the water pump unit and the electric butterfly valve, and the bypass loop directly supplies water to the pipeline without energy consumption;
2. pressurizing unit water supply
When the control cabinet receives H3And H41Signal if H3Fail to satisfy the economic pressure H41When the pressure control device is used, the control cabinet sends instructions for starting the water pump and opening the electric butterfly valve to the water pump unit, the running frequency of the water pump is adjusted by adopting a stepped variable-frequency variable-pressure technology through a PID (proportion integration differentiation) control technology in a PLC (programmable logic controller), and the lowest required pressure H is realized42The requirements of (1);
3. delayed water supply
When H is present3Can not satisfy H42The server sends out an early warning signal to inform workers to find out the running condition of the pipe network, and if the running condition is abnormal, the pump needs to be stopped for processing; if no abnormity exists, the control cabinet sends instructions for starting the water pump and opening the electric butterfly valve to the water pump unit, the operation frequency of the water pump is adjusted by adopting a stepped variable-frequency variable-voltage technology through a PID control technology in the PLC, and the lowest required pressure H is realized42The requirements of (1).
The invention has the following positive effects:
1. safe water supply
Due to the long length of the pipeline, H41、H42The problem of poor conversion time exists in the transmission of pressure signal and the adjustment control of frequency conversion unit. If the traditional stepless speed regulation constant-pressure water supply is adopted, the water hammer effect of a pipe network can be caused, and the water supply safety is seriously influenced. The urban and rural water supply integrated pipe network pressure optimization scheduling intelligent control system adopts step speed regulation, namely stepped variable-frequency variable-pressure water supply with time divided in segments, so that the safe operation of a pipe network is ensured, and the aim of safe water supply is fulfilled.
The pressure measuring points can be directly selected and installed at the most unfavorable point users or important users, the control system monitors the pressure data of the pipe network of the important users, the water supply strategy is adjusted according to the data, and the water consumption of the important users is guaranteed.
2. Energy saving and consumption reduction
(1) Pipe network direct water supply
And under the condition of constant-pressure variable-frequency water supply, determining the outlet pressure of the booster pump station according to the water outlet pressure data. Because the water inlet pressure is less than the water outlet pressure within 24 hours, the pressurizing unit can meet the water outlet pressure requirement only by continuously running for 24 hours.
Since the water outlet pressure is a value which is artificially set and determined to meet the maximum requirement of a user, the value is compared with H41、H42The system makes full use of the variable quantity, and as long as the pressure variable quantity of the water inlet pressure is within the range, the pipe network is selected to directly supply water, the pressurizing unit stops running, and the power is stopped, so that the purpose of energy conservation is achieved.
(2) Stepped variable-frequency and variable-voltage water supply
When the water inlet pressure does not satisfy H41、H42During the operation, the water supply is changed into stepped variable-frequency variable-pressure water supply. At this time, to satisfy H41The water pump set is a main parameter for the operation of the water pump set, so that the water pump set is always in the optimal efficiency area, the most economical water supply pressure is used for meeting the requirements of users, and safe and energy-saving water supply is achieved.
In the operation process of the ZJBB intelligent pressurization control system, a bypass loop is fully utilized to directly supply water to a user; by using the stepped variable-frequency variable-voltage control technology, the running time and running power of the water pump unit are reduced to the maximum extent on the premise of meeting the requirement of users on water consumption, and the electric energy consumption and mechanical wear are reduced.
3. Less investment and quick effect
According to the investigation and test results, the investment can be recovered only by the electricity charge saved in half-year running time according to the size of the pump station, the water demand and the current situation of the pipe network.
4. The system has high intelligent degree, strong capacity expansion and high safety factor.
5. Wide application range
The system is suitable for the whole process from a water production plant to a user terminal, comprises secondary pressurization of a secondary pump station of the water production plant, a pipe network booster pump station and a house, is suitable for energy-saving transformation of all or part of pressurization equipment, and is suitable for energy-saving transformation of the secondary pump station of the water production plant.
6. Has wide application prospect
According to the knowledge, nearly one million water plants in China become or are about to become urban and rural water supply integrated water plants, and each water plant has multiple pressurizing stations on average, so that the energy-saving and consumption-reducing space is large, and the application prospect is wide.
Drawings
FIG. 1 is a schematic structural diagram of an urban and rural water supply integrated pipe network pressure optimization scheduling intelligent control system of the invention;
FIG. 2 is a schematic structural diagram of the intelligent water supply system of the secondary pump house of the water production plant of the present invention;
FIG. 3 is a schematic diagram of a ZJBB system;
FIG. 4 is a schematic view of a user water consumption state monitoring and feedback system;
in the figure: 1 butterfly valve, 2 water pump, 3 control cabinet, 4 signal lines, 5 electric butterfly valve, 6 pressure transmitter, 7 server, 8 pressure transmitter, 9 sterilizing device, 10 electric butterfly valve, 11 pressure transmitter, 12 manual butterfly valve, 13 butterfly valve, 14 control cabinet, 15 water pump, 16 electric butterfly valve, 17 bypass loop, 18 pressure transmitter, 19 signal lines, 20 data collector.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
Please refer to fig. 1 to 4: the invention discloses an urban and rural water supply integrated pipe network pressure optimization scheduling intelligent control system, which comprises: the system comprises a JBB intelligent water supply system, a ZJBB system, a server, a GPRS transmission system and a user water consumption state monitoring feedback system;
the JBB intelligent water supply system comprises a water pump unit and a control cabinet 3;
the water pump unit is formed by connecting three water pump branches in parallel, and each water pump branch is formed by sequentially connecting a butterfly valve 1, a water pump 2 and an electric butterfly valve 5 in series; a water inlet of the water pump unit is communicated with the clean water tank through a valve and a main pipeline, and a water outlet of the water pump unit is connected with a water inlet of the ZJBB system through the main pipeline; a pressure transmitter 6 is arranged on a water outlet pipeline of the water pump unit and used for measuring the water outlet pressure of the water pump unit to form a water outlet pressure monitoring point; the control cabinet 3 mainly comprises a frequency converter and a PLC; the control cabinet 3 is connected with the server 7 through a signal wire 4, is connected with the water pump unit through a control line, and is connected with the pressure transmitter 6 through the signal wire 4;
the signal input end and the signal output end of the JBB intelligent water supply system are respectively connected with the server 7; the input signals of the JBB intelligent water supply system comprise remote pressure monitoring point signals, water outlet pressure monitoring point signals and running state signals of a water pump unit and a valve, and the output signals comprise running state signals of the water pump unit and the valve; the running state signal comprises the state of a valve of the water pump unit, the switching state of a water pump of the water pump unit, the running frequency of the water pump unit and the current of the water pump unit; the remote pressure monitoring point is a water inlet pressure monitoring point of a user branch in the user water state monitoring feedback system;
the ZJBB system comprises a water pump unit, a control cabinet 14 and a bypass loop 17;
the water pump unit is formed by connecting two water pump branches in parallel, and each water pump branch is formed by sequentially connecting a butterfly valve 13, a water pump 15 and an electric butterfly valve 16 in series; a stop valve is arranged on a water inlet pipeline of a water pump unit of the ZJBB intelligent water supply system; a water outlet pipeline of a water pump unit of the ZJBB intelligent water supply system is provided with a disinfection device 9;
a water inlet of the water pump unit is communicated with a water outlet of the JBB intelligent water supply system through a main pipeline, and a water outlet of the water pump unit is connected with a water inlet of the user water consumption state monitoring feedback system through the main pipeline; pressure transmitters 11 and 8 are respectively arranged on a water inlet pipeline and a water outlet pipeline of the water pump unit, and the transmitters 11 and 8 are connected with the control cabinet 14 through signal lines to form a water inlet pressure monitoring point and a water outlet pressure monitoring point;
the control cabinet 14 comprises a frequency converter, a PLC, a transmitter and a receiver; the control cabinet 14 outputs signals to the GPRS transmission system through a transmitter, and receives input signals of the GPRS transmission system through a receiver; is connected with the water pump unit through a control circuit;
the bypass loop 17 is connected with a main pipeline in parallel with the water pump unit; an electric butterfly valve 10 is arranged on the bypass loop 17, and the electric butterfly valve 10 is connected with the control cabinet 14 through a control circuit; the diameter and the material of the bypass loop 17 are the same as those of the main pipeline;
the input signals of the ZJBB system comprise a remote pressure monitoring point signal, a water inlet pressure monitoring point signal, a water outlet pressure monitoring point signal, an operation state signal of an electric butterfly valve 10 of a bypass loop and operation state signals of a water pump unit and an electric butterfly valve 15 of the water pump unit; the output signals of the ZJBB system comprise state signals of an electric butterfly valve 10, a water pump unit and an electric butterfly valve 16 of the water pump unit of the bypass loop; the running state signals of the water pump unit and the electric butterfly valve 16 of the water pump unit comprise the state of the electric butterfly valve 16 of the water pump unit, the switching state of a water pump of the water pump unit, and the running frequency and current of the water pump unit;
the server 7 comprises a hardware server, a transmitter, a receiver and intelligent control software for pipe network optimization scheduling; the intelligent control software for pipe network optimized dispatching consists of data analysis software and pipeline pressure optimized dispatching software, wherein the data analysis software analyzes a data packet by establishing system service and stores the data packet in a database management system; the pipeline pressure optimization scheduling software makes a water supply scheme and adjusts the water supply pressure by comprehensively analyzing data such as a pipeline network structure, pressure, flow, water quality, gas conditions and the like, and the server 7 is connected with the JBB intelligent water supply system through a signal line 4 and can receive input signals of the JBB intelligent water supply system and output signals to the JBB intelligent water supply system; the server 7 can receive input signals of the GPRS transmission system through a receiver and output signals to the GPRS transmission system through a transmitter;
the GPRS transmission system consists of a data acquisition unit, a GPRS network and a communication protocol; the data acquisition unit uses the singlechip technology, utilizes a mobile network and adopts a Modbus communication protocol to remotely send the acquired data such as pressure, flow, water quality and the like to the server 7;
the user water use state monitoring feedback system comprises a pressure transmitter 18 and a data collector 20;
pressure transmitter 18 includes a pressure sensor, measurement circuitry and process connections, and is mounted on the water inlet line of the user branch to form a remote pressure monitoring point for monitoring a remote pressure point signal (to monitor a remote pressure point signal)H for lower remote pressure monitoring point pressure4And shown), pressure transmitter 18 is connected to data collector 20 via signal line 19; the data collector 20 comprises a data collecting module and a GPRS transmission module, and is connected with the GPRS transmission system through the GPRS transmission module to output data to the GPRS transmission system. And each user branch is provided with a user water consumption state monitoring and feedback system.
The invention provides a use method of an urban and rural water supply integrated pipe network pressure optimization scheduling intelligent control system, which comprises the following aspects:
working mode of JBB intelligent pressurization control system
The following two operation modes are provided:
1. pressurizing unit water supply
When the control cabinet receives H41And H2Signal if H2Fail to satisfy the economic pressure H41When the pressure is provided by a remote pressure monitoring point, the control cabinet 3 sends instructions for starting the water pump 2 and opening the electric butterfly valve 5 to the water pump unit, and the running frequency of the water pump is adjusted by adopting a stepped frequency conversion and transformation technology through a PID control technology in a PLC (programmable logic controller), so that the minimum required pressure H is realized42(the pressure is provided by a remote pressure monitoring point); the step-type variable frequency and voltage technology is used for setting PID target values in a step-by-step time-sharing mode to enable the operating frequency of the water pump to rise in a step-type mode until H is met42The requirements of (1); wherein,
the economic pressure H41Refers to a remote pressure monitoring point H4The pressure is the pressure meeting the minimum requirement of a user or the lower limit value of the unit pressurization;
the minimum required pressure H42Refers to a remote pressure monitoring point H4The tip pressure under the condition of optimal economic flow for user satisfaction, namely the pressure of the most unfavorable point or important user point, is close to the most practical satisfaction degree of the user on the service water head of the tap water.
2. Delayed water supply
When H is present2Can not satisfy H42The server sends out an early warning signal to inform workers to find out the running condition of the pipe network, and if the running condition is abnormal, the pump needs to be stopped for processing; if no abnormity exists, the control cabinet 3 sends instructions for starting the water pump 2 and opening the electric butterfly valve 5 to the water pump unit, and the lowest required pressure H is realized by adopting a stepped variable-frequency variable-voltage technology to adjust the operating frequency of the water pump 2 through a PID control technology in the PLC42(the pressure is provided by a remote pressure monitoring point).
3. Constant pressure water supply
When the server 7 cannot receive a signal of a remote pressure monitoring point for a long time, the server 7 sends a constant pressure water supply instruction to the control cabinet 3, and the constant pressure value is set by a user; when the constant voltage value is larger than H2When the water pump is started, the control cabinet sends instructions for starting the water pump 2 and opening the electric butterfly valve 5 to the water pump unit, and the running frequency of the water pump 2 is adjusted by adopting a stepped variable-frequency variable-voltage technology through a PID (proportion integration differentiation) control technology in a PLC (programmable logic controller) until H2Equal to the constant pressure value, realizing constant pressure water supply; when the constant voltage value is less than H2In time, the control cabinet adopts the step-type variable frequency and variable voltage technology to adjust the running frequency of the water pump 2 through the PID control technology in the PLC until H2Equal to the constant pressure value, realizes the constant pressure water supply.
Working mode of two, ZJBB intelligent pressurization control system
The following three working modes are provided;
1. direct water supply by bypass loop 17
When the control cabinet receives H3And H41Signal when H3Can satisfy H41When the water pump is started, the control cabinet 14 sends an opening instruction to the electric butterfly valve 16 in the pipeline loop, sends a closing instruction to the water pump 15 and the electric butterfly valve 16 of the water pump unit, and the bypass loop 17 directly supplies water to the pipeline without energy consumption;
2. pressurizing unit water supply
When the control cabinet receives H3And H41Signal if H3Fail to satisfy the economic pressure H41When the pressure control system is used, the control cabinet sends instructions for starting the water pump 15 and opening the electric butterfly valve 16 to the water pump unit, the running frequency of the water pump 15 is adjusted by adopting a stepped variable-frequency variable-pressure technology through a PID (proportion integration differentiation) control technology in a PLC (programmable logic controller), and the lowest required pressure H is realized42The requirements of (1);
3. delayed water supply
When H is present3Can not satisfy H42The server 7 sends out an early warning signal to inform workers to find out the running condition of the pipe network, and if the running condition is abnormal, the pump needs to be stopped for processing; if no abnormity exists, the control cabinet 14 sends instructions for starting the water pump 15 and opening the electric butterfly valve 16 to the water pump unit, the running frequency of the water pump is adjusted by adopting a stepped variable-frequency variable-pressure technology through a PID control technology in the PLC, and the lowest required pressure H is realized42The requirements of (1).
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (8)
1. The utility model provides a town and country water supply integration pipe network pressure optimization scheduling intelligence control system which characterized in that includes: the system comprises a secondary pump room intelligent water supply system, a pressurizing station intelligent control system, a server, a GPRS transmission system and a user water consumption state monitoring feedback system;
the secondary pump room intelligent water supply system comprises a water pump unit and a control cabinet;
the water pump unit is formed by connecting a plurality of water pump branches in parallel, and each water pump branch is formed by sequentially connecting a butterfly valve, a water pump and an electric butterfly valve in series; a water inlet of the water pump unit is communicated with the clean water tank through a valve and a main pipeline, and a water outlet of the water pump unit is connected with a water inlet of the intelligent control system of the pressurizing station through the main pipeline; a pressure transmitter is arranged on a water outlet pipeline of the water pump unit and used for measuring the water outlet pressure of the water pump unit to form a water outlet pressure monitoring point;
the control cabinet mainly comprises a frequency converter and a PLC; the control cabinet is connected with the server through a signal wire, connected with the water pump unit through a control circuit and connected with the pressure transmitter through a signal wire;
the signal input end and the signal output end of the secondary pump room intelligent water supply system are respectively connected with the server; the input signals of the secondary pump room intelligent water supply system comprise remote pressure monitoring point signals, water outlet pressure monitoring point signals and running state signals of the water pump unit and the valve, and the output signals comprise running state signals of the water pump unit and the valve; the running state signal comprises the state of a valve of the water pump unit, the switching state of a water pump of the water pump unit, the running frequency of the water pump unit and the current of the water pump unit; the remote pressure monitoring point is a water inlet pressure monitoring point of a user branch in the user water state monitoring feedback system;
the intelligent control system of the pressurizing station comprises a water pump unit, a control cabinet and a bypass loop;
the water pump unit is formed by connecting a plurality of water pump branches in parallel, and each water pump branch is formed by sequentially connecting a butterfly valve, a water pump and an electric butterfly valve in series;
a water inlet of the water pump unit is communicated with a water outlet of the secondary pump room intelligent water supply system through a main pipeline, and a water outlet of the water pump unit is connected with a water inlet of the user water consumption state monitoring feedback system through the main pipeline; pressure transmitters are respectively arranged on a water inlet pipeline and a water outlet pipeline of the water pump unit and are connected with the control cabinet through signal lines to form a water inlet pressure monitoring point and a water outlet pressure monitoring point;
the control cabinet comprises a frequency converter, a PLC, a transmitter and a receiver; the control cabinet outputs signals to the GPRS transmission system through the transmitter and receives input signals of the GPRS transmission system through the receiver; is connected with the water pump unit through a control circuit;
the bypass loop is connected with a main pipeline in parallel with the water pump unit; an electric butterfly valve is arranged on the bypass loop and connected with the control cabinet through a control circuit;
the input signals of the intelligent control system of the pressurizing station comprise a remote pressure monitoring point signal, a water inlet pressure monitoring point signal, a water outlet pressure monitoring point signal, an operation state signal of a bypass loop electric butterfly valve and operation state signals of a water pump unit and a water pump unit electric butterfly valve; the output signals of the intelligent control system of the pressurizing station comprise state signals of an electric butterfly valve of a bypass loop, a water pump unit and an electric butterfly valve of the water pump unit; the running state signals of the water pump unit and the electric butterfly valve of the water pump unit comprise the state of the electric butterfly valve of the water pump unit, the switching state of a water pump of the water pump unit, and the running frequency and current of the water pump unit;
the server comprises a hardware server, a transmitter, a receiver and intelligent control software for pipe network optimization scheduling; the intelligent control software for pipe network optimized dispatching consists of data analysis software and pipeline pressure optimized dispatching software, wherein the data analysis software analyzes a data packet by establishing system service and stores the data packet in a database management system; the pipeline pressure optimization scheduling software formulates a water supply scheme and adjusts the water supply pressure by comprehensively analyzing the structure, pressure, flow, water quality and meteorological data of the pipeline network, and the server is connected with the intelligent water supply system of the secondary pump house through a signal line and can receive input signals of the intelligent water supply system of the secondary pump house and output signals to the intelligent water supply system of the secondary pump house; the server can receive input signals of the GPRS transmission system through the receiver and output signals to the GPRS transmission system through the transmitter;
the GPRS transmission system consists of a data acquisition unit, a GPRS network and a communication protocol; the data acquisition unit remotely transmits the acquired pressure, flow and water quality data to the server by using a singlechip technology and a mobile network and adopting a Modbus communication protocol;
the user water use state monitoring feedback system comprises a pressure transmitter and a data acquisition unit;
the pressure transmitter comprises a pressure sensor, a measuring circuit and a process connecting piece, is arranged on a water inlet pipeline of a user branch to form a remote pressure monitoring point and is used for monitoring a remote pressure point signal, and is connected with the data collector through a signal line; the data acquisition unit comprises a data acquisition module and a GPRS transmission module, is connected with the GPRS transmission system through the GPRS transmission module and outputs data to the GPRS transmission system.
2. The urban and rural water supply integrated pipe network pressure optimization scheduling intelligent control system according to claim 1, wherein the diameter and the material of the bypass loop are the same as those of the main pipeline.
3. The urban and rural water supply integrated pipe network pressure optimization scheduling intelligent control system according to claim 1,
and a stop valve is arranged on a water inlet pipeline of a water pump unit of the intelligent control system of the pressurizing station.
4. The urban and rural water supply integrated pipe network pressure optimization scheduling intelligent control system according to claim 1, wherein a disinfection device is arranged on a water outlet pipeline of a water pump unit of the pressurization station intelligent control system.
5. The urban and rural water supply integrated pipe network pressure optimization scheduling intelligent control system according to claim 1, wherein the water pump unit of the secondary pump house intelligent water supply system comprises three water pump branches.
6. The urban and rural water supply integrated pipe network pressure optimization scheduling intelligent control system according to claim 1, wherein a water pump unit of the pressurization station intelligent control system comprises two water pump branches.
7. The system of claim 1, wherein each of the user branches is provided with a user water consumption state monitoring and feedback system.
8. The use method of the urban and rural water supply integrated pipe network pressure optimization scheduling intelligent control system according to claim 1 comprises the following aspects:
working mode of intelligent water supply system of primary and secondary pump rooms
The following three operation modes are provided:
a: pressurizing unit water supply
When the control cabinet receives H41And H2Signal if H2Fail to satisfy the economic pressure H41When the pressure control device is used, the control cabinet sends instructions for starting the water pump and opening the electric butterfly valve to the water pump unit, the running frequency of the water pump is adjusted by adopting a stepped variable-frequency variable-pressure technology through a PID (proportion integration differentiation) control technology in a PLC (programmable logic controller), and the lowest required pressure H is realized42The requirements of (1); the step-type variable frequency and voltage technology is used for setting PID target values in a step-by-step time-sharing mode to enable the operating frequency of the water pump to rise in a step-type mode until H is met42The requirements of (1); wherein,
H2the water outlet pressure of a water pump unit of the intelligent water supply system of the secondary pump room;
economic pressure H41Refers to a remote pressure monitoring point H4The pressure is the pressure meeting the minimum requirement of a user or the lower limit value of the unit pressurization;
minimum required pressure H42Refers to a remote pressure monitoring point H4The pressure is close to the most practical satisfaction degree of the user to the tap water service head, namely the pressure of the most unfavorable point or the pressure of the important user point under the condition of the optimal economic flow satisfied by the user;
B：delayed water supply
When H is present2Can not satisfy H42The server sends out an early warning signal to inform workers to find out the running condition of the pipe network, and if the running condition is abnormal, the pump needs to be stopped for processing; if no abnormity exists, the control cabinet sends instructions for starting the water pump and opening the electric butterfly valve to the water pump unitThe lowest required pressure H is realized by adopting a step-type variable frequency and variable voltage technology to adjust the operating frequency of the water pump through a PID control technology in the PLC42The requirements of (1);
c: constant pressure water supply
When the server cannot receive a signal of a remote pressure monitoring point for a long time, the server sends a constant-pressure water supply instruction to the control cabinet, and the constant-pressure value is set by a user; when the constant voltage value is larger than H2When the water pump is started, the control cabinet sends a command of starting the water pump and opening the electric butterfly valve to the water pump unit, and the running frequency of the water pump is adjusted by adopting a stepped variable-frequency variable-voltage technology through a PID (proportion integration differentiation) control technology in a PLC (programmable logic controller) until H2Equal to the constant pressure value, realizing constant pressure water supply; when the constant voltage value is less than H2In the process, the control cabinet adopts a stepped variable-frequency variable-voltage technology to adjust the operating frequency of the water pump through a PID control technology in a PLC (programmable logic controller) until the operating frequency reaches H2Equal to the constant pressure value, realizing constant pressure water supply;
second, working mode of intelligent control system of pressurizing station
The following three working modes are provided;
a: direct water supply by bypass circuit
When the control cabinet receives H3And H41Signal when H3Can satisfy H41When the water pump is started, the control cabinet sends an opening instruction to the electric butterfly valve in the pipeline loop, sends a closing instruction to the water pump of the water pump unit and the electric butterfly valve, and the bypass loop directly supplies water to the pipeline without energy consumption;
b: pressurizing unit water supply
When the control cabinet receives H3And H41Signal if H3Fail to satisfy the economic pressure H41When the pressure control device is used, the control cabinet sends instructions for starting the water pump and opening the electric butterfly valve to the water pump unit, the running frequency of the water pump is adjusted by adopting a stepped variable-frequency variable-pressure technology through a PID (proportion integration differentiation) control technology in a PLC (programmable logic controller), and the lowest required pressure H is realized42The requirements of (1);
c: delayed water supply
When H is present3Can not satisfy H42The server sends out an early warning signal to inform workers to find out the running condition of the pipe network, and if the running condition is abnormal, the pump needs to be stopped for processing; if no abnormity exists, the control cabinet is controlled to supply water to the water pumpThe unit sends instructions for starting the water pump and opening the electric butterfly valve, and the running frequency of the water pump is adjusted by adopting a stepped variable frequency and variable pressure technology through a PID control technology in a PLC (programmable logic controller), so that the minimum required pressure H is realized42The requirements of (1); wherein,
H3the water outlet pressure of the system is intelligently controlled for the pressurizing station.
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| CN106939627A (en) * | 2017-04-26 | 2017-07-11 | 贵州大学 | A kind of intelligent lift pumping station system |
| CN107168230A (en) * | 2017-06-16 | 2017-09-15 | 上海市水利工程设计研究院有限公司 | Prevent the device and its method for early warning of positive/negative-pressure water hammer based on on-line real time monitoring |
| CN109062155B (en) * | 2018-08-06 | 2021-08-24 | 成都兴蓉沱源自来水有限责任公司 | Tap water production monitoring and water supply scheduling management system |
| CN113849005B (en) * | 2021-10-09 | 2024-04-19 | 张长宗 | Intelligent feedback type pipe network pressure control system and method |
| CN116607601B (en) * | 2023-05-25 | 2023-11-10 | 杭州翱朝科技有限公司 | Urban water supply and drainage intelligent collaborative management control system |
| CN117927457B (en) * | 2024-03-13 | 2025-04-15 | 中建安装集团有限公司 | Vibration and noise reduction system and method for water supply pump group based on smart park computer platform |
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Address after: No. 22, Decheng Road, Dezhou, Shandong, Shandong Patentee after: Shandong Keyuan water supply and drainage equipment Engineering Company Limited Address before: No. 22, Decheng Road, Dezhou, Shandong, Shandong Patentee before: Dezhou Keyuan Water Supply Associated Engineering Development Co., Ltd. |