CN102562548A - Single-phase alternating-current frequency-conversion constant-voltage water pump - Google Patents
Single-phase alternating-current frequency-conversion constant-voltage water pump Download PDFInfo
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- CN102562548A CN102562548A CN2010105948958A CN201010594895A CN102562548A CN 102562548 A CN102562548 A CN 102562548A CN 2010105948958 A CN2010105948958 A CN 2010105948958A CN 201010594895 A CN201010594895 A CN 201010594895A CN 102562548 A CN102562548 A CN 102562548A
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Abstract
The invention provides a single-phase alternating-current frequency-conversion constant-voltage water pump which comprises a single-phase motor, a water pump, a pressure sensor, a flow sensor and a control system and is characterized in that the control system consists of a DSC (Dynamic Stability Control), a key circuit, a rectifier power circuit, a display circuit, a signal isolating circuit, a power output circuit, an overcurrent protection circuit and a control code, wherein the key circuit, the display circuit, the pressure sensor, the flow sensor and the signal isolating circuit are connected with the DSC; the power supply is electrically connected with the rectifier power circuit; the rectifier power circuit is connected with all circuits; the water pump is provided with a water inlet and a water outlet; and the pressure sensor and the flow sensor are installed on the water outlet.
Description
Technical field
The present invention relates to single phase alternating current frequency-changing pressure stabilizing water pump, mainly be applicable to piped water supply and water supply control technique the higher family of water supply stability requirement, small units building, small-sized hotel.
Background technique
Characteristics such as the single phase alternating current power supply water pump is low with its simple structure, cost, technology maturity height have purposes extremely widely in industry and civilian.In recent years; Along with growth in the living standard; The enhancing of people's environmental consciousness; And the electric power supply pressure that continues to increase, individual and society all propose higher requirement to the energy consumption of each electric appliances, mainly rely on automatic single-phase water pump that pressure switch controls not energy-conservation and pipeline impacted greatly more and more can't satisfy customer requirements because of it in the past.Single-phase energy-saving constant voltage water pump can reach above purpose, improves the travelling comfort and the working life that prolongs pipeline of user's water, but single-phase energy-saving constant voltage water pump is not provided in the market.
Summary of the invention
The objective of the invention is provides a kind of control performance high in order to overcome the shortcoming that prior art exists, and the pressure of supply water good stability is little to the pipeline impact, and energy-conservation single phase alternating current frequency-changing pressure stabilizing water pump.
The technological scheme of single phase alternating current frequency-changing pressure stabilizing water pump of the present invention is: comprise single phase motor, water pump, pressure transducer, flow transducer and control system; It is characterized in that described control system is made up of DSC, key circuit, rectification power circuit, display circuit, signal isolation circuit, power output circuit, over-current protection circuit and control routine; Said key circuit and display circuit, pressure transducer, flow transducer and signal isolation circuit are connected with DSC; Power supply is connected with rectification power circuit; Rectification power circuit is connected with all circuit, and water pump has water intake and water outlet, and pressure transducer and flow transducer are installed on the water outlet.
The invention discloses a kind of single phase alternating current frequency-changing pressure stabilizing water pump; Mainly comprise water pump, pressure transducer, flow transducer and control system that single phase motor drives; Described control system is made up of DSC (digital signal controller), button, rectification power circuit, display circuit, signal isolation circuit, power output circuit, over-current protection circuit and control routine; Said button and display circuit, pressure transducer, flow transducer and signal isolation circuit are connected with DSC; Power supply is connected with rectification power circuit, and rectification power circuit is connected (referring to that rectification power circuit is connected with display circuit, signal isolation circuit, power output circuit, over-current protection circuit and DSC) with all circuit.This product has the following advantages:
One, adopts electromechanical integrated structure, make the user remove the trouble of installing from.
Two, used a flow transducer than three phase variable frequency constant voltage water pump more, more accurately judges use water state, realize control more reliably.
Three, use the DSC of high performance tape DSP function to produce high-precision vector pulse width signal.
Four, the present invention need not set complicated major-minor umber of turn ratio applicable to all single-phase water pump types.
Five, pipeline, valve and watering equipment in the raw water service pump stream can be effectively protected in the water supply of constant pressure, nothing impact, no water hammer effect.
Description of drawings
Fig. 1 is a single phase alternating current frequency-changing pressure stabilizing water pump structure schematic representation of the present invention;
Fig. 2 is a single phase alternating current frequency-changing pressure stabilizing water pump functional-block diagram of the present invention;
Fig. 3 is key circuit, display circuit and DSC control circuit schematic representation;
Fig. 4 is signal isolation circuit, power output circuit, rectification power circuit, over-current protection circuit schematic representation;
Fig. 5 is the LED display circuit;
Fig. 6 is DSC (digital signal controller) circuit;
Fig. 7 is an output driving circuit;
Fig. 8 is a signal isolation circuit;
Fig. 9 is a power output circuit;
Figure 10 is a rectification power circuit;
Figure 11 is an over-current protection circuit.
Embodiment
The present invention relates to a kind of single phase alternating current frequency-changing pressure stabilizing water pump; Like Fig. 1-shown in Figure 11; Comprise single phase motor 1, water pump 2, pressure transducer 5, flow transducer 6 and control system; It is characterized in that described control system is made up of DSC, key circuit 71, rectification power circuit 9, display circuit 7, signal isolation circuit 81, power output circuit 82, over-current protection circuit 83 and control routine; Said key circuit 71 and display circuit 7, pressure transducer 5, flow transducer 6 and signal isolation circuit 81 are connected with DSC, and power supply is connected with rectification power circuit 9, and rectification power circuit is connected with all circuit; Water pump has water intake 3 and water outlet 4, and pressure transducer 5 is installed on the water outlet 4 with flow transducer 6.
Single phase alternating current frequency-changing pressure stabilizing water pump of the present invention; There is nixie tube U4 to show real-time pressure and setting pressure in the display circuit 7 of said control system; Set the pressure that needs control by key circuit 71; 48 sections LED nixie tube U4 are driven by the 4th ic chip 4 and the 6th ic chip 6; The 14th, 11,12 pins of its signal input port the 4th ic chip 4 are connected to the 15th, 14,11 pins of DSC, and the key circuit of being made up of the 51st, the 50th, the 52nd, the 53rd, the 54th resistance R 51, R50, R52, R53, R54 and the 1st, the 2nd, the 3rd button S1, S2, S3 71 is connected to the 6th pin of DSC.Two pwm signals that said control system is produced through code by the DSC that contains the DSP function are by the 24th pin output of the 26th pin and the PWM2L of PWM1L, are connected to the 1st pin of A1 integrated package U1A1 and the 3rd pin not gate (74HC04) of B integrated package U1B after signal isolation circuit 81 isolation of being made up of first ic chip 1 and the 4th ic chip 4; By the 2nd, the 4th pin output, with the 1st, the 2nd pin interconnection of the 7th ic chip 7, second ic chip 2, the 19th, the 12nd pin of second ic chip 2, the 7th ic chip 7 drives 4 IGBT respectively after the anti-phase; The 1st triode, the 2nd triode, the 3rd triode, the 4th triode Q1, Q2, Q3, Q4 are connected to the U end of motor by the E utmost point of the 1st triode Q1, are connected to the V end by the E utmost point of the 3rd triode Q3.The internal amplifier and the 33rd of said second integrated package, the 7th ic chip 2, IC7, the 34th resistance R 33, R34, the 28th capacitor C the the the the 28, the 18th, the 25th, the 27th, the 16th, the 22nd, the 23rd resistance R 18, R25, R27, R16, R22, R23 form over-current protection circuit jointly; Protection output terminal the 3rd pin of second ic chip 2, the 7th ic chip 7 is connected to 2 pin of isolating the 3rd ic chip 3, with the 16th pin that is connected to DSC after the Signal Spacing by the 4th pin output of the 3rd ic chip 3, protection starting during low level.One end of said flow transducer 6 is held with being connected to, and the other end is connected to the 5th pin of DSC, and one of 3 port of pressure transducer 5 are connected to the 5V power supply, and another holds with being connected to, and another is connected to the 4th pin of DSC again.
Single phase alternating current frequency-changing pressure stabilizing water pump Control work process:
Visible by Fig. 2, Fig. 3; After pressure transducer 5 arrives DSC (digital signal controller) with flow transducer 6 with the live signal special delivery; DSC makes a response to signal through specific program, and 2 pulse-width signals that this reaction generates are delivered to power output circuit 82 after signal isolation circuit 81 is isolated; Power output circuit 82 zooms into power signal with voltage signal, is used to drive pump motor 1 running behind the synthetic frequency conversion sinusoidal voltage.Its control principle is: when user's water consumption strengthened, flow transducer 6 and pressure transducer 5 were delivered to DSC after with this variation perception, and DSC will improve output frequency, and water pump 2 is turned round at faster speed, and the raising water output is constant to keep-up pressure.When user's water consumption reduced, flow transducer 6 passed to DSC with pressure transducer 5 with this variation, and DSC will reduce output frequency, make water pump 2 with low-speed running, reduced water output, made pressure keep constant.As user no longer during water, flow transducer and pressure transducer pass to DSC with this variation, and DSC will close output frequency, stop pump operation.
Fig. 3 (can be divided into Fig. 5 and Fig. 6) is button display circuit and DSC part schematic diagram; Export by the 14th, the 15th, the 11st pin of DSC by the demonstration signal that DSC (digital signal controller) produces according to specific program; The 14th pin of DSC is connected to the 11st pin of the 4th ic chip 4; The 15th pin of DSC is connected to the 12nd pin of the 4th ic chip 4, and the 11st pin of DSC is connected to the 14th pin of the 4th ic chip 4.The 1st pin of pressure transducer is connected to+5V, and the 2nd pin is connected to the 4th pin of DSC, and the 3rd pin is held with being connected to.The 1st pin of flow transducer 6 is connected to the 5th pin of DSC; The 2nd pin is held with being connected to; Button 71 signals are connected to the 6th pin, and rectification power circuit 9 and current signal are connected respectively to the 2nd, 3 pins of DSC, and the 26th and the 24th pin of DSC is exported a pair of pwm signal.
Fig. 4 (can be divided into Fig. 7, Fig. 8, Fig. 9, Figure 10 and Figure 11) is the circuit theory diagrams of signal isolation circuit, power output circuit, rectification power circuit, over-current protection circuit; Export the 2nd pin that a pair of pwm signal is connected respectively to optocoupler first ic chip 1 and the 4th ic chip 4 by DSC; The 1st ic chip 1 and the 4th ic chip 4 are with being exported by the 6th pin after the Signal Spacing; After phase inverter U1A, U1B anti-phase, be cross connected to the 1st, the 2nd pin of second ic chip 2 and the 7th ic chip 7; Second ic chip 2 and the 7th ic chip 7 are power drive IC, and pwm signal is amplified rear driving IGBT, the 1st triode Q1, the 2nd triode Q2, the 3rd triode Q3, the 4th triode Q4.Form sinusoidal voltage at the E of the 1st triode Q1 and the 3rd triode Q3 end, drive pump motor 1 running.Be connected with current sampling the 33rd resistance R 33 at the E of the 4th triode Q4 end; The 6th pin of input the 7th ic chip 7 behind the current sampling is amplified the 9th pin of back input the 7th ic chip 7 by its internal amplifier; The 9th pin internal amplifier connects into comparator; When electric current was excessive, comparator drove optocoupler the 3rd ic chip 3 frequently by the low electricity of the 3rd pin output, was input to DSC after over-current signal is isolated.
This programme has the following advantages:
1, adopts electromechanical integrated structure, make the user remove the trouble of installing from.
2, used a flow transducer than three phase variable frequency constant voltage water pump more, more accurately judges use water state, realize control more reliably.
3, use the DSC of high performance tape DSP function to produce high-precision vector pulse width signal.
4, the present invention need not set complicated major-minor umber of turn ratio applicable to all single-phase water pump types.
5, pipeline, valve and watering equipment in the raw water service pump stream can be effectively protected in the water supply of constant pressure, nothing impact, no water hammer effect.
Claims (5)
1. single phase alternating current frequency-changing pressure stabilizing water pump; Comprise single phase motor (1), water pump (2), pressure transducer (5), flow transducer (6) and control system; It is characterized in that described control system is made up of DSC, key circuit (71), rectification power circuit (9), display circuit (7), signal isolation circuit (81), power output circuit (82), over-current protection circuit (83) and control routine; Said key circuit (71) and display circuit (7), pressure transducer (5), flow transducer (6) and signal isolation circuit (81) are connected with DSC; Power supply is connected with rectification power circuit (9); Rectification power circuit is connected with all circuit, and water pump has water intake (3) and water outlet (4), and pressure transducer (5) and flow transducer (6) are installed on the water outlet (4).
2. single phase alternating current frequency-changing pressure stabilizing water pump as claimed in claim 1; It is characterized in that having in the display circuit (7) of said control system nixie tube (U4) to show real-time pressure and setting pressure; Set the pressure that needs control by key circuit (71); 48 sections LED nixie tubes (U4) are driven by the 4th integrated package (IC4) and the 6th integrated package (IC6); The 14th, 11,12 pins of its signal input port the 4th integrated package (IC4) are connected to the 15th, 14,11 pins of DSC, and the key circuit of being made up of the 51st, the 50th, the 52nd, the 53rd, the 54th resistance (R51, R50, R52, R53, R54) and the 1st, the 2nd, the 3rd button (S1, S2, S3) (71) is connected to the 6th pin of DSC.
3. single phase alternating current frequency-changing pressure stabilizing water pump as claimed in claim 1; It is characterized in that the 24th pin output of two pwm signals that said control system produces through code by the DSC that contains the DSP function, be connected to the 1st pin of A1 integrated package (U1A1) and the 3rd pin not gate (74HC04) of B integrated package (U1B) after signal isolation circuit (81) isolation of forming by first integrated package (IC1) and the 4th integrated package (IC4) by the 26th pin and the PWM2L of PWM1L; By the output of the 2nd, 4 pins, with the 1st, 2 pin interconnections of the 7th integrated package (IC7), second integrated package (IC2), the 19th, 12 pins of second integrated package (IC2), the 7th integrated package (IC7) drive 4 IGBT respectively after the anti-phase; The 1st triode, the 2nd triode, the 3rd triode, the 4th triode (Q1, Q2, Q3, Q4) are connected to the U end of motor by the E utmost point of the 1st triode (Q1), are connected to the V end by the E utmost point of the 3rd triode (Q3).
4. single phase alternating current frequency-changing pressure stabilizing water pump as claimed in claim 1 is characterized in that said control system has internal amplifier and the 33rd, the 34th resistance (R33, R34), the 28th electric capacity (C28), the 18th, the 25th, the 27th, the 16th, the 22nd, the 23rd resistance (R18, R25, R27, R16, R22, R23) of second integrated package, the 7th integrated package (IC2, IC7) to form over-current protection circuit (83) jointly; Protection output terminal the 3rd pin of second integrated package (IC2), the 7th integrated package (IC7) is connected to the 2nd pin of isolating the 3rd integrated package (IC3); With exporting the 16th pin that is connected to DSC by the 4th pin of the 3rd integrated package (IC3) after the Signal Spacing, protection starting during low level.
5. single phase alternating current frequency-changing pressure stabilizing water pump as claimed in claim 1; An end that it is characterized in that said flow transducer (6) is held with being connected to; The other end is connected to the 5th pin of DSC; One of 3 port of pressure transducer (5) are connected to the 5V power supply, and another holds with being connected to, and another is connected to the 4th pin of DSC again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010594895.8A CN102562548B (en) | 2010-12-17 | 2010-12-17 | Single-phase alternating-current frequency-conversion constant-voltage water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010594895.8A CN102562548B (en) | 2010-12-17 | 2010-12-17 | Single-phase alternating-current frequency-conversion constant-voltage water pump |
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| Publication Number | Publication Date |
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| CN102562548A true CN102562548A (en) | 2012-07-11 |
| CN102562548B CN102562548B (en) | 2015-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010594895.8A Active CN102562548B (en) | 2010-12-17 | 2010-12-17 | Single-phase alternating-current frequency-conversion constant-voltage water pump |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074747A (en) * | 2013-03-28 | 2014-10-01 | 上海诺科泵业有限公司 | Digital display screw pump |
| CN110816257A (en) * | 2019-11-27 | 2020-02-21 | 南京金龙客车制造有限公司 | PWM control electronic water pump assembly |
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| US20060130504A1 (en) * | 2004-12-17 | 2006-06-22 | Agrawal Nityanand J | Method and apparatus for control of a variable speed compressor |
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2010
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Patent Citations (5)
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| CN2071216U (en) * | 1989-07-09 | 1991-02-13 | 梁礼锐 | Full automatic stabilized water supply device |
| US20050123408A1 (en) * | 2003-12-08 | 2005-06-09 | Koehl Robert M. | Pump control system and method |
| US20060130504A1 (en) * | 2004-12-17 | 2006-06-22 | Agrawal Nityanand J | Method and apparatus for control of a variable speed compressor |
| CN201671802U (en) * | 2010-05-26 | 2010-12-15 | 天津市华萌科技有限公司 | Fan and pump class load automatic adjusting and super power saving device |
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Non-Patent Citations (2)
| Title |
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| 王宪生等: "基于DSP控制的变频自动恒压供水系统设计", 《自动化仪表》 * |
| 王良军: "一种用于单相交流电机的新型SVPWM变频控制方案的实验研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074747A (en) * | 2013-03-28 | 2014-10-01 | 上海诺科泵业有限公司 | Digital display screw pump |
| CN110816257A (en) * | 2019-11-27 | 2020-02-21 | 南京金龙客车制造有限公司 | PWM control electronic water pump assembly |
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| Publication number | Publication date |
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| CN102562548B (en) | 2015-01-28 |
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Address after: 317525 Taizhou, Zhejiang Wenling City, Ocean City Town Industrial Zone, 500 North Road Patentee after: Zhejiang God energy Polytron Technologies Inc Address before: 317525 Ocean City Industrial Zone, Dashi Town, Wenling City, Taizhou, Zhejiang Patentee before: Taizhou Shenneng Electric Co., Ltd. |
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