CN201972199U - Automatic constant pressure device in water supply system - Google Patents
Automatic constant pressure device in water supply system Download PDFInfo
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- CN201972199U CN201972199U CN2011200293396U CN201120029339U CN201972199U CN 201972199 U CN201972199 U CN 201972199U CN 2011200293396 U CN2011200293396 U CN 2011200293396U CN 201120029339 U CN201120029339 U CN 201120029339U CN 201972199 U CN201972199 U CN 201972199U
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- water supply
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- supply system
- constant pressure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
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Abstract
本实用新型涉及一种恒压调节装置，特别是一种供水系统中的自动恒压装置，其结构要点在于，包括有压力检测仪、流量计、PLC控制器以及PID调节器，PLC控制器中包括有数据处理装置和基准装置，经过PLC控制器和PID调节器的控制和调节，可以保持供水管道的恒压送水，避免供水不足或者电机空转，达到了节电节能的技术效果，减少了设备损耗、延长电机寿命，并提高供水管道的使用寿命，其自动化程度高，在保证可靠供水前提下，充分发挥了变频调速的节能潜力，消除了主管网压力波动，保证了供水质量；而且节能效果明显，并延长了主管网及其阀门的使用寿命。
The utility model relates to a constant pressure regulating device, in particular to an automatic constant pressure device in a water supply system. It includes a data processing device and a reference device. After the control and adjustment of the PLC controller and the PID regulator, it can maintain the constant pressure water supply of the water supply pipeline, avoid insufficient water supply or idling of the motor, and achieve the technical effect of energy saving and reduce equipment consumption. Loss, prolong the life of the motor, and improve the service life of the water supply pipeline. It has a high degree of automation. On the premise of ensuring reliable water supply, it fully exerts the energy-saving potential of frequency conversion speed regulation, eliminates the pressure fluctuation of the main network, and ensures the quality of water supply; and saves energy. The effect is obvious, and the service life of the main network and its valves is prolonged.
Description
Technical field
The utility model relates to a kind of constant voltage adjusting device, the automatic constant-pressure device in particularly a kind of water system.
Background technology
In the prior art, often occur the water supply line hydraulic pressure indefinite situation that changes because of water demand in the tap water supply system, when water supply volume increased, hydraulic pressure reduced, and this moment, unalterable water supply scheme can cause the output deficiency; When water supply volume reduced, hydraulic pressure increased, and original water supply scheme can make and motor idle running cause waste of energy, the application life that Protean water supply pressure of while also can reduce water supply line.
The utility model content
The purpose of this utility model is to provide a kind of automatic constant-pressure device that can keep in water system hydraulic pressure, the energy-conservation water system according to the deficiencies in the prior art part.
The utility model is realized by following approach:
Automatic constant-pressure device in the water system, its structural feature is, include pressure detecting instrument, flow meter, PLC controller and PID adjuster, include data processing equipment and standard apparatus in the PLC controller, pressure detecting instrument is connected with the input of data processing equipment respectively with flow meter, the control output end of data processing equipment is connected with water pump control end in the water system, the data output end of data processing equipment is connected with the PID adjuster, the reference edge of standard apparatus is connected with data processing equipment, the control end of PID adjuster is connected with frequency converter in the water system, the data feedback end of PID adjuster is connected with data processing equipment simultaneously, and frequency converter connects water pump by the control motor in the water system.
The PLC controller is a kind of programmable logic controller, and the PID adjuster is a kind ofly to be applicable to substantially linear and the time-independent regulating system of behavioral characteristics by what ratio unit P, integral unit I and differentiation element D formed.Have first hydraulic pressure value and second hydraulic pressure value of setting in the said reference device, first hydraulic pressure value is a standard constant water pressure value, and second hydraulic pressure value comprises higher limit and lower limit; Pressure detecting instrument and flow meter are installed on the water supply line in the water system, and workflow of the present utility model is:
When water supply volume increases, when hydraulic pressure reduces, the data that pressure detecting instrument and flow meter detect are sent to data processing equipment, data processing equipment should detect data and first hydraulic pressure value compares, if be lower than the standard hydraulic pressure value, and is lower than lower limit, then switch the water pump operation pattern by data processing equipment, the constant-speed operation of maintenance work water pump, and drop into new water pump operation, reach setting value to increase hydraulic pressure; If be lower than the standard hydraulic pressure value, and be higher than lower limit, then handle and detect data, and send to the PID adjuster;
The regulated quantity of the data computation frequency converter that the PID adjuster provides according to the PLC controller, and this regulated quantity analyzed, the frequency converter frequency after regulating then sends the frequency that control instruction is regulated frequency converter during less than maximum power frequency, thereby improve the rotating speed of water pump, increase hydraulic pressure;
When the frequency converter frequency after regulating is higher than maximum power frequency, then PID sends the data processing equipment that feeds back signal to the PLC controller, switches the water pump operation pattern by data processing equipment, keeps the constant-speed operation of work water pump, and drop into new water pump operation, reach setting value to increase hydraulic pressure;
When water supply volume reduces, when hydraulic pressure increases, the data that pressure detecting instrument and flow meter detect are sent to data processing equipment, data processing equipment should detect data and first hydraulic pressure value compares, if be higher than the standard hydraulic pressure value, and be higher than higher limit, then switch the water pump operation pattern by data processing equipment, turn off the longest water pump running time, reduce hydraulic pressure; If be higher than the standard hydraulic pressure value, be lower than higher limit, then handle and detect data, and send to the PID adjuster;
The regulated quantity of the data computation frequency converter that the PID adjuster provides according to the PLC controller, and this regulated quantity analyzed, the frequency converter frequency after regulating then sends the frequency that control instruction is regulated frequency converter when starting power frequency, thereby reduce the rotating speed of water pump, reduce hydraulic pressure;
Frequency converter frequency after regulating is lower than when starting power frequency, and then PID sends the data processing equipment that feeds back signal to the PLC controller, switches the water pump operation pattern by data processing equipment, turns off the longest water pump running time, reduces hydraulic pressure and reaches setting value.
Like this, control and adjusting through PLC controller and PID adjuster can keep the constant voltage of water supply line to send water, avoid the idle running of insufficient water or motor, reached the technique effect of electricity saving and energy saving, reduced equipment loss, prolonged electrical machinery life, and the application life of improving water supply line.
The utility model can further be specially:
The PLC controller adopts the PLC and the WINCC configuration interface of the S7-200 of Siemens series.
This PLC is applicable in detection, monitoring and the automation field of all trades and professions.No matter it is independently in service or carrying out network links to each other and all can realize complicated control function that the S7-200 strong functions makes it.Therefore have high performance and price ratio.The state of whole system pressure, flow, current of electric and each pump etc. can show at host computer, and can realize operated from a distance control and manual switching controls at host computer.
Pressure detecting instrument is selected hundred special industrial diffused silicon pressure transmitters for use, this transmitter output stable sensitivity height, general strain gauge transducer output only is about 10mv, and diffuse silicon sensor full scale is output as about 100mv, factor affecting such as interference and noise are less relatively, the also corresponding reduction of amplifying circuit cost, resolution ratio improves greatly.Near the no dead band zero pressure.
Flow meter adopts hundred special FBLU series vortex-shedding meters, and this flow meter is a stress-type vortex street flowmeter, has from the low temperature-40 ℃ operating temperature range to 300 ℃ of broadnesses of high temperature.It and the supporting use of flow integrator can be measured the volume flow and the mass flow of steam, air, general gas and liquid, are a kind of quite desirable flow instruments at present.
In sum, the utility model provides a kind of automatic constant-pressure device that can keep in water system hydraulic pressure, the energy-conservation water system, adopt the control and the adjusting of PLC controller and PID adjuster, its automaticity height, guaranteeing under the reliable water supply prerequisite, give full play to the energy-saving potential of frequency control, eliminated the pressure oscillation of person in charge's net, guaranteed quality of water supply; And energy-saving effect is obvious, and has prolonged the application life of being responsible for net and valve thereof.In addition, it also can be connected with various general configuration softwares easily, carries out the presence states monitoring and realizes unmanned operated from a distance.Incorporate the production system operation behind the system trial run into and obtained good result.The automation control and the Long-distance Control of system have been realized, to the real-time monitoring of system, the switching of fault machine.Aspect automation, reached designing requirement originally.
Description of drawings
Figure 1 shows that the circuit frame schematic diagram of the automatic constant-pressure device in the water system described in the utility model;
Figure 2 shows that the described water system structural representation of the utility model embodiment with automatic constant-pressure device.
Below in conjunction with embodiment the utility model is described further.
Specific embodiment
Most preferred embodiment:
With reference to accompanying drawing 1, automatic constant-pressure device in the water system, include pressure detecting instrument, flow meter, PLC controller and PID adjuster, include data processing equipment and standard apparatus in the PLC controller, pressure detecting instrument is connected with the input of data processing equipment respectively with flow meter, the control output end of data processing equipment is connected with water pump control end in the water system, the data output end of data processing equipment is connected with the PID adjuster, the reference edge of standard apparatus is connected with data processing equipment, the control end of PID adjuster is connected with frequency converter in the water system, the data feedback end of PID adjuster is connected with data processing equipment simultaneously, and frequency converter connects water pump by the control motor in the water system.
Wherein the PLC controller adopts the PLC and the WINCC configuration interface of the S7-200 of Siemens series; Pressure detecting instrument is selected hundred special industrial diffused silicon pressure transmitters for use; Flow meter adopts hundred special FBLU series vortex-shedding meters.Have first hydraulic pressure value and second hydraulic pressure value of setting in the standard apparatus, first hydraulic pressure value is a standard constant water pressure value, and second hydraulic pressure value comprises higher limit and lower limit; Pressure detecting instrument and flow meter are installed on the water supply line in the water system.The PID adjuster is that a kind of integration module is installed in the PLC controller.
In conjunction with the accompanying drawings 1, with reference to accompanying drawing 2, the operating principle of above-mentioned automatic constant-pressure device is:
When water supply volume increases, when hydraulic pressure reduces, the data that pressure detecting instrument and flow meter detect are sent to data processing equipment, data processing equipment should detect data and first hydraulic pressure value compares, if be lower than the standard hydraulic pressure value, and is lower than lower limit, then switch the water pump operation pattern by data processing equipment, the constant-speed operation of maintenance work water pump, and drop into new water pump operation, reach setting value to increase hydraulic pressure; If be lower than the standard hydraulic pressure value, and be higher than lower limit, then handle and detect data, and send to the PID adjuster;
The regulated quantity of the data computation frequency converter that the PID adjuster provides according to the PLC controller, and this regulated quantity analyzed, the frequency converter frequency after regulating then sends the frequency that control instruction is regulated frequency converter during less than maximum power frequency, thereby improve the rotating speed of water pump, increase hydraulic pressure;
When the frequency converter frequency after regulating is higher than maximum power frequency, then PID sends the data processing equipment that feeds back signal to the PLC controller, switches the water pump operation pattern by data processing equipment, keeps the constant-speed operation of work water pump, and drop into new water pump operation, reach setting value to increase hydraulic pressure;
When water supply volume reduces, when hydraulic pressure increases, the data that pressure detecting instrument and flow meter detect are sent to data processing equipment, data processing equipment should detect data and first hydraulic pressure value compares, if be higher than the standard hydraulic pressure value, and be higher than higher limit, then switch the water pump operation pattern by data processing equipment, turn off the longest water pump running time, reduce hydraulic pressure; If be higher than the standard hydraulic pressure value, be lower than higher limit, then handle and detect data, and send to the PID adjuster;
The regulated quantity of the data computation frequency converter that the PID adjuster provides according to the PLC controller, and this regulated quantity analyzed, the frequency converter frequency after regulating then sends the frequency that control instruction is regulated frequency converter when starting power frequency, thereby reduce the rotating speed of water pump, reduce hydraulic pressure;
Frequency converter frequency after regulating is lower than when starting power frequency, and then PID sends the data processing equipment that feeds back signal to the PLC controller, switches the water pump operation pattern by data processing equipment, turns off the longest water pump running time, reduces hydraulic pressure and reaches setting value.
It is same as the prior art that the utility model is not stated part.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200293396U CN201972199U (en) | 2011-01-28 | 2011-01-28 | Automatic constant pressure device in water supply system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011200293396U CN201972199U (en) | 2011-01-28 | 2011-01-28 | Automatic constant pressure device in water supply system |
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| CN201972199U true CN201972199U (en) | 2011-09-14 |
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| CN2011200293396U Expired - Lifetime CN201972199U (en) | 2011-01-28 | 2011-01-28 | Automatic constant pressure device in water supply system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493529A (en) * | 2011-11-18 | 2012-06-13 | 安徽工业大学 | Energy-saving type water supply method and device based on secondary tap water pressurization |
| CN102981424A (en) * | 2012-11-27 | 2013-03-20 | 新疆大全新能源有限公司 | Output control method, device and control system |
| CN103031872A (en) * | 2011-10-22 | 2013-04-10 | 山东科技大学 | Device for flushing toilet by constant-pressure reuse water supplied through processing washing water and rainwater |
| CN103046616A (en) * | 2012-12-26 | 2013-04-17 | 淮安万邦香料工业有限公司 | Constant-pressure control method for circulating water system |
| CN103727019A (en) * | 2013-12-23 | 2014-04-16 | 中煤矿山建设集团有限责任公司 | Constant-current frequency conversion control system for brine pumps of freezing station |
| CN104360628A (en) * | 2014-11-11 | 2015-02-18 | 宁夏嘉翔自控技术有限公司 | Tap water supply system of PLC (programmable logic controller) controlled wells |
| CN104360629A (en) * | 2014-11-11 | 2015-02-18 | 宁夏嘉翔自控技术有限公司 | Central control unit of central PLC (programmable logic controller) controlled tap water supply system |
| CN105386487A (en) * | 2015-12-08 | 2016-03-09 | 卧龙电气集团股份有限公司 | Automatic calibration system for sensor-less constant-pressure water supply and working method of automatic calibration system |
| CN105585162A (en) * | 2016-01-27 | 2016-05-18 | 珠海格力电器股份有限公司 | Water purification unit and inlet pressure control assembly |
| CN106370555A (en) * | 2016-10-10 | 2017-02-01 | 山西汾西矿业（集团）有限责任公司 | Densitometer device for coal dressing system |
| CN107447812A (en) * | 2017-09-11 | 2017-12-08 | 浙江志展智能科技有限公司 | A kind of intelligent networking formula control system of water pump |
-
2011
- 2011-01-28 CN CN2011200293396U patent/CN201972199U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031872A (en) * | 2011-10-22 | 2013-04-10 | 山东科技大学 | Device for flushing toilet by constant-pressure reuse water supplied through processing washing water and rainwater |
| CN102493529A (en) * | 2011-11-18 | 2012-06-13 | 安徽工业大学 | Energy-saving type water supply method and device based on secondary tap water pressurization |
| CN102493529B (en) * | 2011-11-18 | 2014-07-23 | 安徽工业大学 | Energy-saving type water supply method and device based on secondary tap water pressurization |
| CN102981424A (en) * | 2012-11-27 | 2013-03-20 | 新疆大全新能源有限公司 | Output control method, device and control system |
| CN103046616A (en) * | 2012-12-26 | 2013-04-17 | 淮安万邦香料工业有限公司 | Constant-pressure control method for circulating water system |
| CN103727019A (en) * | 2013-12-23 | 2014-04-16 | 中煤矿山建设集团有限责任公司 | Constant-current frequency conversion control system for brine pumps of freezing station |
| CN104360628A (en) * | 2014-11-11 | 2015-02-18 | 宁夏嘉翔自控技术有限公司 | Tap water supply system of PLC (programmable logic controller) controlled wells |
| CN104360629A (en) * | 2014-11-11 | 2015-02-18 | 宁夏嘉翔自控技术有限公司 | Central control unit of central PLC (programmable logic controller) controlled tap water supply system |
| CN105386487A (en) * | 2015-12-08 | 2016-03-09 | 卧龙电气集团股份有限公司 | Automatic calibration system for sensor-less constant-pressure water supply and working method of automatic calibration system |
| CN105585162A (en) * | 2016-01-27 | 2016-05-18 | 珠海格力电器股份有限公司 | Water purification unit and inlet pressure control assembly |
| CN106370555A (en) * | 2016-10-10 | 2017-02-01 | 山西汾西矿业（集团）有限责任公司 | Densitometer device for coal dressing system |
| CN107447812A (en) * | 2017-09-11 | 2017-12-08 | 浙江志展智能科技有限公司 | A kind of intelligent networking formula control system of water pump |
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Granted publication date: 20110914 |
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| CX01 | Expiry of patent term |