CN101649631B - Wired remote transmission frequency-conversion water supply system through pressure signals - Google Patents
Wired remote transmission frequency-conversion water supply system through pressure signals Download PDFInfo
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- CN101649631B CN101649631B CN2009103068077A CN200910306807A CN101649631B CN 101649631 B CN101649631 B CN 101649631B CN 2009103068077 A CN2009103068077 A CN 2009103068077A CN 200910306807 A CN200910306807 A CN 200910306807A CN 101649631 B CN101649631 B CN 101649631B
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Abstract
The invention relates to a wired remote transmission frequency-conversion water supply system through pressure signals, which comprises a pressure transducer, an intelligent regulator, a frequency-conversion speed controller, a motor, a water pump, a water supply pipeline, and the like, wherein power is supplied to the pressure transducer through a UPS AC power supply via the current terminal of an image current source on the water supply pipeline at the tail water using area of the pressure transducer; pressure signals are transmitted to the intelligent regulator through a telephone cable and the image end with image current in a wired way, and thus, a closed control system is formed. Wired remote transmission frequency-conversion water supply under constant pressure is realized, an image current circuit in the system eliminates the resistance of the wired cable as well as attenuation to the transmission signals after resistance change, the delay of pressure signals in the process of transmission is zero, the telephone cable is directly connected at an exchanger room, and isolated with a telephone system. The technical scheme of wired remote transmission can be used for monitoring wave height, typhoon intensity, blood water level and monitoring real-time data during bad weather conditions, and the like.
Description
Technical field
The present invention relates to a kind of wired remote transmission frequency-conversion water supply system through pressure signals, belong to the tap water supply automation field.
Background technology
At present the constant pressure water supply system of widespread usage is to be controlling object with the waterworks top hole pressure, in order to guarantee the needs of user's water, the force value of water system during often with user peak period water is controlling object, normally uses water pressure with what satisfy water use peak phase user.Because at the water low peak period, water supply flow is few, the pressure loss of pipe network is little, user's actual used water pressure will be higher than the required pressure of normal water, there is bigger energy dissipation, therefore, existing is that the constant pressure water supply system of controlling object is not the most energy-conservation a kind of way of supplying water with the waterworks top hole pressure.
In " a kind of energy-conservation variable voltage variable frequency water system " literary composition that " the variable-frequence governor world " the 7th periodical in 2006 goes out, mentioning with the least favorable in the water supply zone of water factory is the pressure controling parameter of variable frequency pump with the pressure of supply water of water spot, make least favorable keep 3m～5m water column with the pressure of water spot, make the pressure of supply water of least favorable water supply point keep constant by the rotating speed of regulating the variable-frequence governor water pump, water consumption is few like this, the ductwork pressure loss is little, and the pressure of supply water of least favorable usefulness water spot is the same with water pressure with the water use peak phase.This variable frequency water supply technology is more more reasonable technically than constant pressure water supply system, representing the developing direction of pump variable frequency variable speed energy saving technology, but the variable frequency water supply technology of introducing in this article does not solve the transmission of remote pressure signal and is difficult to the real-time continuous problem that is transferred to the waterworks; And existing Inter net and GPRS network all can not be used for the transmission pressure signal owing to there being the data time-delay; Simultaneously, described in this article to keep 3m～5m water column with least favorable with the pressure of water spot also be science not too as controlled variable directly, because user's water disturbance will cause the instability of total system, make this variable frequency water supply technology can't keep the stable water supply of water supply network.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of wired remote transmission frequency-conversion water supply system through pressure signals is provided, this system have when the pressure signal wired remote-transmission loss of signal little, do not have time-delay, a water supply network pressure control characteristic of accurate, in the water ebb period, the energy-saving effect of system is better than prior art.
For realizing the object of the invention, the technical scheme that adopts is: a kind of wired remote transmission frequency-conversion water supply system through pressure signals, comprise pressure unit, automation control apparatus, variable-frequence governor, motor, water pump and water supply line, described pressure unit passes through DC power supply, the signal output part of this pressure unit is connected on the signal input part of automation control apparatus, described pressure unit is installed on the water supply line in last water zone slightly, between the signal input part of described automation control apparatus and pressure unit signal output part and direct supply thereof, be connected with the image current source circuit and form a closed-loop control system, the a pair of input port of this image current source circuit connects pressure unit signal output part and direct supply thereof, and a pair of mirror image output port of image current source circuit is connected on the signal input part of automation control apparatus.
Described image current source circuit is made up of two transistor common bases, one of them triode is the current source end of image current source circuit, another triode is the mirror image end of mirror current source, the base stage of two triodes is connected on the collector of current source end triode, the collector of current source end triode connects dc power anode, its emitter is connected the back and connects the pressure unit positive pole with the emitter of mirror image end triode, dc power cathode connects the pressure unit negative pole, the collector of mirror image end triode is connected with the input of automation control apparatus signal is anodal by signal-transmitting cable, and the emitter of mirror image end triode is connected with automation control apparatus signal input negative pole by signal-transmitting cable.
The direct supply of described pressure unit adopts the UPS direct supply, the input termination 220V civil power of this UPS direct supply, and its output terminal is the 24V direct current, built-in 24V accumulator, capacity can be 1Ah～4Ah, realizes the uninterrupted power supply to pressure unit.
Described signal-transmitting cable adopts water supply network idle telephone cable along the line, and the telephone cable that is connected the pressure unit on the water supply line of last water slightly zone does not pass through programme-controlled exchange at the place, exchange room for directly connecting with the telephone cable that is connected automation control apparatus.
Described telephone cable can be organized in parallel the use to reduce the resistance of telephone cable more.
For after preventing the end pressure unit on the water supply line of water zone breaking down slightly, the pressure of the water supply network of tap water is uncontrollable, thereby needs to install the standby ductwork pressure induction of signal system of a cover.Described variable-frequence governor has the preferential input port that connects last water slightly zone water supply line upward pressure transmitter pressure signal, is connected with the pressure sensitive signal of waterworks water supply Trunk Line on second input port of this variable-frequence governor; Also be serially connected with a signal sampling circuit between pressure unit on the water supply line of water zone and the automation control apparatus slightly at the end, the output terminal of this signal sampling circuit is connected with that the super upper limit of current signal is cut off circuit and the super lower limit of current signal cuts off circuit, in the automation control apparatus that the control end that the super upper limit of current signal is cut off circuit and the super lower limit cut-out of current signal circuit is serially connected in the regional water supply line of last water slightly and the circuit that variable-frequence governor is connected.The pressure signal that detects the pressure unit on the water supply line of last water slightly zone by signal sampling circuit changes, when the variation of its signal exceeds the higher limit of setting or lower limit, the signal that cuts off between circuit or super lower limit cut-out circuitry cuts automation control apparatus of current signal and the variable-frequence governor by the super upper limit of current signal transmits, variable-frequence governor automatically switches to the pressure sensitive signal of standby waterworks water supply Trunk Line with the input signal of pressure, makes the water system can operate as normal.
In described automation control apparatus and circuit that variable-frequence governor is connected, also be connected with a sound light alarming circuit.
The present invention is installed in the end with the pressure unit of constant pressure water supply system and installs on the water supply Trunk Line of Water District slightly, use cable and realize the wired direct teletransmission of pressure signal by the image current source circuit, the mirror current source circuit for eliminating after the resistance of wire cable and the resistance variations thereof to the decay of transmission signals, realized that the continuous transmission course time-delay of pressure signal is zero, can well directly be connected with automation control apparatus; Because the constant pressure of supply water of constant pressure water supply system is the end pressure on the water supply Trunk Line in water zone slightly, little in water low peak period water consumption, the pressure loss value of water supply line is little, pressure on the water supply Trunk Line in last water zone slightly is after teletransmission control, the pressure of supply water of waterworks outlet is lower than the pressure of supply water of water use peak phase, therefore the water supply consumption of water low peak period is lower than the water supply consumption of water use peak phase, power savings is better than existing constant pressure water supply system, has significant good effect.Its signal-transmitting cable adopts idle telephone cable can save a large amount of winding displacements, wiring cost, and can save the set-up time of system.
Description of drawings
Fig. 1 is the wired remote transmission frequency-conversion water supply system through pressure signals theory diagram;
Fig. 2 is the elementary diagram of image current source circuit with NPN type triode;
Fig. 3 is the elementary diagram of image current source circuit with the positive-negative-positive triode;
Fig. 4 is telephone cable connecting circuit figure;
Fig. 5 is a pressure signal testing circuit theory diagram.
Embodiment
As shown in Figure 1, by pressure unit 1, automation control apparatus 2, variable-frequence governor 3, motor 4, water pump 5, the wired remote-transmission frequency-conversion water supply system that water supply line 6 grades are formed, pressure unit 1 is installed the end slightly on the water supply line of water zone, power by 7 pairs of pressure units of mirror current source 1 by UPS direct supply 9, pressure signal by mirror current source 7 and signal-transmitting cable 8 wire transmission to automation control apparatus 2, form a closed-loop control system, realized the wired remote-transmission constant pressure water supply, image current source circuit 7 has wherein been eliminated after the resistance of wire cable and the resistance variations thereof the decay to transmission signals.
Shown in Figure 2, mirror current source 7 is by two negative-positive-negative transistor T
1, T
2Common base is formed, wherein triode T
1Be the current source end of mirror current source, another triode T
2Be the mirror image end of mirror current source, two triode T
1, T
2Base stage be connected current source end triode T
1Collector on, current source end triode T
1Collector connect the output head anode of UPS direct supply 9, current source end triode T
1Emitter and mirror image end triode T
2Emitter connect the back and connect pressure unit 1 positive pole, UPS direct supply 9 negative pole of output end connect pressure unit 1 negative pole, mirror image end triode T
2Collector is connected mirror image end triode T by signal-transmitting cable 8 with the input of automation control apparatus 2 signals is anodal
2Emitter is connected with the signal input negative pole of automation control apparatus 2 by cable.The system earth point is located at mirror image end triode T
2Emitter and cable junction are minus earth.
The input termination 220V civil power of UPS direct supply 9, output terminal is the 24V direct current, built-in 24V accumulator, capacity can be 1Ah～4Ah, behind mains failure, can power 50～200 hours to pressure unit, realizes the uninterrupted power supply to pressure unit.
Shown in Figure 3, mirror current source 7 is by two positive-negative-positive transistor T
1, T
2Common base is formed, wherein triode T
1Be the current source end of mirror current source, another triode T
2Be the mirror image end of mirror current source, two triode T
1, T
2Base stage be connected current source end triode T
1Collector on, current source end triode T
1Emitter connect the output head anode of UPS direct supply 9, current source end triode T
1Emitter and mirror image end triode T
2Emitter connect the back and be connected current source end triode T with automation control apparatus 2 signals input positive pole by transmission cable 8
1Collector is connected with pressure unit is anodal, and UPS direct supply 9 negative pole of output end connect pressure unit 1 negative pole, mirror image end triode T
2Collector is connected with automation control apparatus 2 signals input negative pole by signal-transmitting cable 8.The system earth point is located at mirror image end triode T
2Emitter and cable junction are plus earth.
The input termination 220V civil power of UPS direct supply 9, output terminal is the 24V direct current, built-in 24V accumulator, capacity can be 1Ah～4Ah, behind mains failure, can power 50～200 hours to pressure unit, realizes the uninterrupted power supply to pressure unit.
As shown in Figure 4, for saving cost and system's set-up time, when practical application, signal-transmitting cable 8 adopts water supply line idle telephone cable along the line, the telephone cable that is connected to last water zone slightly directly is connected at the place, exchange room with the telephone cable that is connected to the waterworks, and need not pass through programme-controlled exchange, realize isolation with telephone system, if when finding in using that the line resistance of telephone cable is excessive, use with many telephone cables are in parallel, the transmission range of pressure signal can reach 5～10km, even longer distance.
As shown in Figure 5, for prevent when the end slightly the pressure unit of water zone water supply line break down can't the transmission pressure signal, the standby pressure-detecting device of one cover also is installed on the water supply delivery trunk line of waterworks, and this pick-up unit is a prior art, no longer describes in detail herein.The pressure signal of two cover pressure-detecting devices all is connected on the variable-frequence governor, and wherein, the end is the pressure signal AN of water zone water supply line slightly
1Connect the preferential input end of variable-frequence governor, on second input port of variable-frequence governor, be connected with the pressure sensitive signal AN of waterworks water supply Trunk Line
2, the pressure signal AN on the water supply line of last water slightly zone
1Pressure sensitive signal AN with waterworks water supply Trunk Line
2Control the switching of its signal by a signal deteching circuit and variable-frequence governor.This signal deteching circuit comprises and is serially connected in the end pressure unit on the water supply line of water zone and the signal sampling circuit in the circuit between the automation control apparatus slightly, the output terminal of this signal sampling circuit is connected with the two super upper limits of current signal in parallel mutually and cuts off circuit and the super lower limit cut-out of current signal circuit, the super upper limit of current signal is cut off control end that circuit and the super lower limit of current signal cut off circuit and all is serially connected in the end slightly in automation control apparatus and the circuit that variable-frequence governor is connected of water zone water supply line, also is parallel with a sound light alarming circuit in the super upper limit cut-out circuit of current signal and the super lower limit cut-out of current signal circuit and circuit that variable-frequence governor is connected.When be positioned at the end slightly the pressure unit on the water supply line of water zone break down the super upper limit of the current signal of pressure unit or, variable-frequence governor cuts off the end regional water supply line pressure controling signal of water AN slightly automatically down in limited time
1, simultaneously, sound light alarming circuit sends sound and light alarm, and variable-frequence governor automatic switchover control signal transfers the outlet pressure of supply water signal AN of water factory to
2Control.
This kind wired remote-transmission technical scheme also can be used for monitoring the real time data of hazard weathers such as wave height, intensity of typhoon, flood level, because telephone cable for being provided with burying, have well anti-thunder and lightning and typhoon protection performance, because the energy consumption of system's operation is very little, can under the situation of electric system paralysis, carry out many days realization data in real time continuous monitoring continuously, after real time data is drawn out curve, can carry out hazard prediction preferably.
Claims (8)
1. wired remote transmission frequency-conversion water supply system through pressure signals, comprise pressure unit, automation control apparatus, variable-frequence governor, motor, water pump and water supply line, described pressure unit passes through DC power supply, the signal output part of this pressure unit is connected on the signal input part of automation control apparatus, it is characterized in that: described pressure unit is installed on the water supply line in last water zone slightly, between the signal input part of described automation control apparatus and pressure unit signal output part and direct supply thereof, be connected with the image current source circuit and form a closed-loop control system, the a pair of input port of this image current source circuit connects pressure unit signal output part and direct current supply thereof, and a pair of mirror image output port of image current source circuit is connected on the signal input part of automation control apparatus.
2. wired remote transmission frequency-conversion water supply system through pressure signals according to claim 1, it is characterized in that: described image current source circuit is made up of two negative-positive-negative transistor common bases, one of them triode is the current source end of image current source circuit, another triode is the mirror image end of mirror current source, the base stage of two triodes is connected on the collector of current source end triode, the collector of current source end triode connects dc power anode, its emitter is connected the back and connects the pressure unit positive pole with the emitter of mirror image end triode, dc power cathode connects the pressure unit negative pole, the collector of mirror image end triode is connected with the input of automation control apparatus signal is anodal by signal-transmitting cable, the emitter of mirror image end triode is connected with automation control apparatus signal input negative pole by signal-transmitting cable, the system earth point is located at mirror image end transistor emitter and cable junction, is minus earth.
3. wired remote transmission frequency-conversion water supply system through pressure signals according to claim 1, it is characterized in that: mirror current source is made up of two positive-negative-positive transistor common bases, one of them triode is the current source end of mirror current source, another triode is the mirror image end of mirror current source, the base stage of two triodes is connected on the collector of current source end triode, the emitter of current source end triode connects the output head anode of direct supply, current source end transistor emitter is connected the back and is connected with the input of automation control apparatus signal is anodal by transmission cable with the emitter of mirror image end triode, current source end transistor collector is connected with pressure unit is anodal, the dc power output end negative pole connects the pressure unit negative pole, mirror image end transistor collector is connected with automation control apparatus signal input negative pole by signal-transmitting cable, the system earth point is located at mirror image end transistor emitter and cable junction, is plus earth.
4. wired remote transmission frequency-conversion water supply system through pressure signals according to claim 1, it is characterized in that: the direct supply of described pressure unit adopts the UPS direct supply, the input termination 220V civil power of this UPS direct supply, its output terminal is the 24V direct current, built-in 24V accumulator, capacity is 1Ah～4Ah, realizes the uninterrupted power supply to pressure unit.
5. wired remote transmission frequency-conversion water supply system through pressure signals according to claim 1, it is characterized in that: signal-transmitting cable adopts water supply network idle telephone cable along the line, and the telephone cable that is connected the pressure unit on the water supply line of last water slightly zone does not pass through programme-controlled exchange at the place, exchange room for directly connecting with the telephone cable that is connected automation control apparatus.
6. wired remote transmission frequency-conversion water supply system through pressure signals according to claim 5 is characterized in that: described telephone cable adopts the use in parallel of many groups to reduce the resistance of telephone cable.
7. according to any described wired remote transmission frequency-conversion water supply system through pressure signals of claim 1-6, it is characterized in that: described variable-frequence governor has the preferential input port that connects last water slightly zone water supply line upward pressure transmitter pressure signal, is connected with the pressure sensitive signal of waterworks water supply Trunk Line on second input port of this variable-frequence governor; Also be serially connected with a signal sampling circuit between pressure unit on the water supply line of water zone and the automation control apparatus slightly at the end, the output terminal of this signal sampling circuit is connected with that the super upper limit of current signal is cut off circuit and the super lower limit of current signal cuts off circuit, in the automation control apparatus that the control end that the super upper limit of current signal is cut off circuit and the super lower limit cut-out of current signal circuit is serially connected in the regional water supply line of last water slightly and the circuit that variable-frequence governor is connected.
8. wired remote transmission frequency-conversion water supply system through pressure signals according to claim 7 is characterized in that: also be connected with a sound light alarming circuit in described automation control apparatus and circuit that variable-frequence governor is connected.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103068077A CN101649631B (en) | 2009-09-09 | 2009-09-09 | Wired remote transmission frequency-conversion water supply system through pressure signals |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103068077A CN101649631B (en) | 2009-09-09 | 2009-09-09 | Wired remote transmission frequency-conversion water supply system through pressure signals |
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| Publication Number | Publication Date |
|---|---|
| CN101649631A CN101649631A (en) | 2010-02-17 |
| CN101649631B true CN101649631B (en) | 2011-06-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112585355B (en) * | 2018-09-21 | 2022-12-02 | 株式会社日立产机系统 | Fluid machine system and fluid machine |
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