CN104675686A - Automatic adjusting method of water supply pressure - Google Patents
Automatic adjusting method of water supply pressure Download PDFInfo
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- CN104675686A CN104675686A CN201510000022.2A CN201510000022A CN104675686A CN 104675686 A CN104675686 A CN 104675686A CN 201510000022 A CN201510000022 A CN 201510000022A CN 104675686 A CN104675686 A CN 104675686A
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- pressure
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- water
- frequency variator
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 239000008400 supply water Substances 0.000 claims description 11
- 239000008235 industrial water Substances 0.000 abstract description 2
- 230000004069 differentiation Effects 0.000 abstract 1
- 230000010354 integration Effects 0.000 abstract 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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- Control Of Fluid Pressure (AREA)
Abstract
The invention belongs to the field of industrial water supply auto-control systems and provides an automatic adjusting method of water supply pressure. A pressure transmitter is mounted on a discharge master pipe of a water supply pump; a regulator is installed in a control room; a frequency converter is mounted in a pump control cabinet; an output signal of the pressure transmitter is connected to the input end of the regulator; the output signal subjected to constant pressure regulation by the regulator is connected to the input end of the frequency converter; output of the frequency converter is connected to a pump motor. A network pressure signal detected by the pressure transmitter is sent to a PID (proportion integration differentiation) regulator, a given pressure value is set in the regulator, actual pressure detected is compared with the given pressure value, a reverse mA value is output, the frequency converter is controlled to output proper frequency, running speed of the pump motor is changed, balance of water supply is adjusted, and constant pressure of a discharge network is achieved.
Description
Technical field
The invention belongs to industrial water supply automatic control system field.
Background technique
The working centre of water system is exactly that assure feed water user stablizes by water pressure, especially in industrial system, such as, supplies the system of blast furnace or rolling line, very strict to pressure of supply water index request.Ordinary circumstance, workman adjusts water pressure by regulating the flowing water Valve aperture of water pump.
But, because user's water consumption changes greatly, ductwork pressure all can change at any time, need the frequent regulating valve of field worker, not only workload is large, and once cause ductwork pressure to fluctuate because user's water consumption changes, workman does not have Timeliness coverage, or there is no timely controlling opening of valve, the production of subsequent user will be had influence on.Meanwhile, the aperture of valve also needs long-term experience accumulation, to a new worker, is just difficult to grasp.
Therefore, a set of pressure of supply water automatic control tegulatingdevice is installed, both can stablizes hydraulic pressure, meet user and use water requirement, again can saving power save cost of labor.
Summary of the invention
In order to assure feed water systematic Water supply pressure is stablized, save operating cost, the invention provides a kind of pressure of supply water Automatic adjustment method.
Technological scheme of the present invention:
The present invention is by pressure transmitter on-line measurement ductwork pressure, and pressure signal is converted to 4-20mA standard signal and input to PID regulator, by comparing with the setting value of setting, export a reverse mA value, frequency variator is instructed to export suitable frequency, change the running speed of pump motor, thus regulate water pump water output, to reach the object of water supply output pipe network constant voltage.
The present invention includes pressure of supply water automatic regulating system, pressure of supply water automatic regulating system installs a set of pressure transmitter on raw water service pump delivery trunk, a regulator is installed in control room, the output signal of pressure transmitter is connected to regulator input end, in water pump control cabinet, a frequency variator is installed, regulator is connected to the input end of frequency variator by the output signal after constant pressure adjust, the output of frequency variator is connected to pump motor.
First be set to automatically by the working method of frequency variator, setup parameter in regulator, is set to reaction by regulating action, and requires to arrange a pressure setting value according to pipe network user.When the user's water consumption in pipe network changes, ductwork pressure changes, and the pressure signal detected is input to regulator and regulates by pressure transmitter.
(1) when user's water consumption reduces, ductwork pressure increases, and when regulator input pressure value is higher than pressure setting value, regulation output value diminishes, reach frequency variator, allow the output of frequency variator reduce, the rotating speed of pump motor reduces, electric current reduces, and export the water yield and reduce, output pipe network pressure declines gradually; When ductwork pressure drops to setting value, regulator stable output is in constant frequency, and ductwork pressure keeps constant;
(2) when user's water consumption increases, ductwork pressure reduces, when regulator input pressure value is lower than setting pressure value, regulation output value becomes large, reach frequency variator, allow the output of frequency variator improve, the rotating speed of pump motor increases, electric current increases, water pump exports the water yield and increases, and output pipe network pressure rises gradually, when ductwork pressure rises to setting value, regulator stable output is in constant frequency, and ductwork pressure keeps constant.Regulated the rotating speed of pump motor by frequency variator at any time, water pump can be made minimum with being down to, and ensure that the constant of ductwork pressure.
Described regulator is PID regulator or programmable controller PLC system.
The input end that the output signal of pressure transmitter is connected to is PID regulator input end or is connected to PLC system analog input terminal.
Realized the constant pressure of water supply network by a set of automatic regulation system for pressure, meet the water demand of user, and save the energy and cost of labor.
Accompanying drawing explanation
Fig. 1 is pressure of supply water automatic regulating system block diagram of the present invention.
Embodiment
Pressure of supply water automatic regulating system installs a set of pressure transmitter on raw water service pump delivery trunk, a PID regulator is installed in control room, the output signal of pressure transmitter is connected to PID regulator input end, in water pump control cabinet, a frequency variator is installed, PID regulator is connected to the input end of frequency variator by the output signal after constant pressure adjust, the output of frequency variator is connected to pump motor.
First the working method of frequency variator is set to automatically, in PID regulator, has established PI value according to the response time, and require to arrange a pressure setting value according to user, regulating action is set to reaction.When the user's water consumption in pipe network changes, ductwork pressure changes, and the pressure signal detected is input to PID regulator and regulates by pressure transmitter.
(1) when user's water consumption reduces, ductwork pressure increases, and when PID regulator input pressure value is higher than pressure setting value, regulation output value diminishes, reach frequency variator, allow the output of frequency variator reduce, the rotating speed of pump motor reduces, electric current reduces, and export the water yield and reduce, output pipe network pressure declines gradually; When ductwork pressure drops to setting value, PID regulator stable output is in constant frequency, and ductwork pressure keeps constant;
(2) when user's water consumption increases, ductwork pressure reduces, when PID regulator input pressure value is lower than pressure setting value, regulation output value becomes large, reach frequency variator, allow the output of frequency variator improve, the rotating speed of pump motor increases, electric current increases, water pump exports the water yield and increases, and output pipe network pressure rises gradually, when ductwork pressure rises to setting value, PID regulator stable output is in constant frequency, and ductwork pressure keeps constant.Regulated the rotating speed of pump motor by frequency variator at any time, water pump can be made minimum with being down to, and ensure that the constant of ductwork pressure.
Described regulator is PID regulator or programmable controller PLC system.
The input end that the output signal of pressure transmitter is connected to is PID regulator input end or is connected to PLC system analog input terminal.
Claims (3)
1. a pressure of supply water automatic regulating system, it is characterized in that, on raw water service pump delivery trunk, a set of pressure transmitter is installed, a regulator is installed in control room, in water pump control cabinet, a frequency variator is installed, the output signal of pressure transmitter is connected to regulator input end, regulator is connected to the input end of frequency variator by the output signal after constant pressure adjust, the output of frequency variator is connected to pump motor.
2. a pressure of supply water Automatic adjustment method, the working method of frequency variator is set to automatically, setting pressure setting value in regulator, regulating action is set to reaction, when the user's water consumption in pipe network changes, ductwork pressure changes, and the pressure signal detected is input to regulator and regulates by pressure transmitter.
3. a kind of pressure of supply water Automatic adjustment method according to claim 3, is characterized in that
(1) when user's water consumption reduces, ductwork pressure increases, and when regulator input pressure value is higher than pressure setting value, regulation output value diminishes, reach frequency variator, allow the output of frequency variator reduce, the rotating speed of pump motor reduces, electric current reduces, and export the water yield and reduce, output pipe network pressure declines gradually; When ductwork pressure drops to setting value, regulator stable output is in constant frequency, and ductwork pressure keeps constant;
(2) when user's water consumption increases, ductwork pressure reduces, when regulator input pressure value is lower than pressure setting value, regulation output value becomes large, reach frequency variator, allow the output of frequency variator improve, the rotating speed of pump motor increases, electric current increases, water pump exports the water yield and increases, and output pipe network pressure rises gradually, when ductwork pressure rises to setting value, regulator stable output is in constant frequency, and ductwork pressure keeps constant; Regulated the rotating speed of pump motor by frequency variator at any time, water pump can be made minimum with being down to, and ensure that the constant of ductwork pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510000022.2A CN104675686A (en) | 2015-01-01 | 2015-01-01 | Automatic adjusting method of water supply pressure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510000022.2A CN104675686A (en) | 2015-01-01 | 2015-01-01 | Automatic adjusting method of water supply pressure |
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| CN104675686A true CN104675686A (en) | 2015-06-03 |
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| CN201510000022.2A Pending CN104675686A (en) | 2015-01-01 | 2015-01-01 | Automatic adjusting method of water supply pressure |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156311A (en) * | 2015-07-10 | 2015-12-16 | 南方泵业股份有限公司 | Trinuclear ultrafast constant pressure frequency conversion control method |
| CN105178386A (en) * | 2015-07-15 | 2015-12-23 | 金华倍特泵业有限公司 | Light and small intelligent household deep-well constant-pressure water supply system |
| CN106351822A (en) * | 2016-10-17 | 2017-01-25 | 广汉市思科信达科技有限公司 | Power saving device for water pump of oil pipeline |
| CN106499009A (en) * | 2016-11-29 | 2017-03-15 | 常熟开关制造有限公司(原常熟开关厂） | A kind of intelligent water supply device and method |
| CN106593843A (en) * | 2017-01-16 | 2017-04-26 | 三禾电器(福建)有限公司 | Constant-pressure automatic operation control method for variable speed electric pump |
| CN107559182A (en) * | 2017-08-31 | 2018-01-09 | 广东工业大学 | A kind of water pump control method and control system |
| CN110195709A (en) * | 2019-05-29 | 2019-09-03 | 广州炜尔电子有限公司 | A kind of antifreeze thermal protection method and system of constant pressure water supply frequency converter |
| CN110529921A (en) * | 2019-08-22 | 2019-12-03 | 山西太钢不锈钢股份有限公司 | A kind of heating network system thermal energy Efficient utilization method |
| CN112695842A (en) * | 2021-01-11 | 2021-04-23 | 锦霸科技股份有限公司 | Constant-pressure water supply control method without pressure tank |
| CN112982554A (en) * | 2021-03-15 | 2021-06-18 | 安徽海沃特水务股份有限公司 | Intelligent platform system with non-negative pressure water supply pipe |
| CN115542959A (en) * | 2022-10-09 | 2022-12-30 | 深圳天华机器设备有限公司 | Automatic constant pressure method, device, equipment and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5735180A (en) * | 1980-07-11 | 1982-02-25 | Hitachi Ltd | Operating method of pumping apparatus |
| JPS6166881A (en) * | 1984-09-11 | 1986-04-05 | Mitsubishi Electric Corp | Electric pump |
| CN2223311Y (en) * | 1994-08-31 | 1996-03-27 | 陆宝林 | Full-automatic constant pressure water supply controlling device |
| CN2853917Y (en) * | 2005-07-20 | 2007-01-03 | 石家庄紫藤惠尔科技有限公司 | Pipe net direct-connection negative pressure frequency control of speed water supply equipment |
| CN201594195U (en) * | 2009-11-18 | 2010-09-29 | 上海建筑材料集团水泥有限公司 | Constant-pressure water supply control device |
| CN202579138U (en) * | 2012-05-08 | 2012-12-05 | 浙江恒逸高新材料有限公司 | Variable frequency power-saving control system of circulating pump |
-
2015
- 2015-01-01 CN CN201510000022.2A patent/CN104675686A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5735180A (en) * | 1980-07-11 | 1982-02-25 | Hitachi Ltd | Operating method of pumping apparatus |
| JPS6166881A (en) * | 1984-09-11 | 1986-04-05 | Mitsubishi Electric Corp | Electric pump |
| CN2223311Y (en) * | 1994-08-31 | 1996-03-27 | 陆宝林 | Full-automatic constant pressure water supply controlling device |
| CN2853917Y (en) * | 2005-07-20 | 2007-01-03 | 石家庄紫藤惠尔科技有限公司 | Pipe net direct-connection negative pressure frequency control of speed water supply equipment |
| CN201594195U (en) * | 2009-11-18 | 2010-09-29 | 上海建筑材料集团水泥有限公司 | Constant-pressure water supply control device |
| CN202579138U (en) * | 2012-05-08 | 2012-12-05 | 浙江恒逸高新材料有限公司 | Variable frequency power-saving control system of circulating pump |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156311B (en) * | 2015-07-10 | 2016-11-30 | 南方中金环境股份有限公司 | Three core very fast constant pressure frequency conversion control method |
| CN105156311A (en) * | 2015-07-10 | 2015-12-16 | 南方泵业股份有限公司 | Trinuclear ultrafast constant pressure frequency conversion control method |
| CN105178386A (en) * | 2015-07-15 | 2015-12-23 | 金华倍特泵业有限公司 | Light and small intelligent household deep-well constant-pressure water supply system |
| CN106351822A (en) * | 2016-10-17 | 2017-01-25 | 广汉市思科信达科技有限公司 | Power saving device for water pump of oil pipeline |
| CN106499009B (en) * | 2016-11-29 | 2019-05-24 | 常熟开关制造有限公司(原常熟开关厂） | A kind of intelligent water supply device and method |
| CN106499009A (en) * | 2016-11-29 | 2017-03-15 | 常熟开关制造有限公司(原常熟开关厂） | A kind of intelligent water supply device and method |
| CN106593843A (en) * | 2017-01-16 | 2017-04-26 | 三禾电器(福建)有限公司 | Constant-pressure automatic operation control method for variable speed electric pump |
| CN106593843B (en) * | 2017-01-16 | 2018-07-17 | 三禾电器(福建)有限公司 | A kind of constant pressure automatic running control method of speed electrical pumps |
| CN107559182A (en) * | 2017-08-31 | 2018-01-09 | 广东工业大学 | A kind of water pump control method and control system |
| CN110195709A (en) * | 2019-05-29 | 2019-09-03 | 广州炜尔电子有限公司 | A kind of antifreeze thermal protection method and system of constant pressure water supply frequency converter |
| CN110529921A (en) * | 2019-08-22 | 2019-12-03 | 山西太钢不锈钢股份有限公司 | A kind of heating network system thermal energy Efficient utilization method |
| CN112695842A (en) * | 2021-01-11 | 2021-04-23 | 锦霸科技股份有限公司 | Constant-pressure water supply control method without pressure tank |
| CN112695842B (en) * | 2021-01-11 | 2022-09-20 | 锦霸科技股份有限公司 | Constant-pressure water supply control method without pressure tank |
| CN112982554A (en) * | 2021-03-15 | 2021-06-18 | 安徽海沃特水务股份有限公司 | Intelligent platform system with non-negative pressure water supply pipe |
| CN115542959A (en) * | 2022-10-09 | 2022-12-30 | 深圳天华机器设备有限公司 | Automatic constant pressure method, device, equipment and storage medium |
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Application publication date: 20150603 |
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