CN103243778A - Double constant pressure branch pipe supercharger and control method - Google Patents
Double constant pressure branch pipe supercharger and control method Download PDFInfo
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- CN103243778A CN103243778A CN2013102072298A CN201310207229A CN103243778A CN 103243778 A CN103243778 A CN 103243778A CN 2013102072298 A CN2013102072298 A CN 2013102072298A CN 201310207229 A CN201310207229 A CN 201310207229A CN 103243778 A CN103243778 A CN 103243778A
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Abstract
The invention relates to a double constant pressure branch pipe supercharger which comprises a plurality of water supply branch pipes connected with a municipal water supply main pipe network. The supercharger is characterized in that each water supply branch pipe is internally provided with a water pump in a built-in mounting manner; each water pump is independently provided with a control unit, so that each water supply branch pipe has an ability to adjust water pressure; and with the adoption of a control method provided by the invention, the water outlet pressure at the tail end of each water supply branch pipe is kept constant. The supercharger and the control method have the technical benefits that according to the double constant pressure branch pipe supercharger, running states of the water pumps can be controlled dynamically in real time according to the water pressure variation, the water outlet pressure of the water supply branch pipes is kept relatively constant, and a citizen can enjoy the quality water supply service.
Description
Technical field
The present invention relates to a kind of constant pressure water supply technology, relate in particular to a kind of pair of constant voltage arm booster and control method.
Background technology
Water-supply systems generally are responsible for net by municipal water supply and are connected the online water supply arm of the municipal water supply person in charge and form, the water supply arm is responsible for water that net sends here with municipal water supply and is delivered to each and uses water spot, and the hydraulic pressure that municipal water supply is responsible for net has material impact to the discharge pressure with water spot; Along with the continuous expansion of city scale, there is fluctuation in the water supply pressure that municipal water supply is responsible for net, and its concrete manifestation has:
1, when water use peak, municipal water supply is responsible for net and is not held when water use peak, the problem of hydraulic pressure wretched insufficiency can occur.2, because the restriction of geographical environment, municipal water supply is responsible for net, and there is the problem of hydraulic pressure wretched insufficiency in higher relatively place in the geographical position.3, municipal water supply is responsible for net and carries out pressurised equipment and can only from the source, pressurize to being responsible for net, thisly be difficult to effectively control municipal water supply and be responsible for that net is not held and the hydraulic pressure of the arm that supplies water carrying out pressing mode.4, because municipal water supply is responsible for the intrinsic pipe damage of net, also can cause the hydraulic pressure deficiency.5, existing supercharging equipment can impact the normal water supply of municipal water supply person in charge net, even causes negative pressure on the net the municipal water supply person in charge.
Summary of the invention
At the problem in the background technology, the present invention proposes a kind of pair of constant voltage arm booster, comprise that being connected municipal water supply is responsible for many online water supply arms, its improvement is: adopt built-in mounting means that a water pump is set in every water supply arm, every water pump all disposes a control module separately, and described control module is made up of intake pressure sensor, discharge pressure sensor, frequency converter, PLC control module, human-computer dialogue device and GPRSDTU module;
Water pump is connected with frequency converter; Frequency converter, intake pressure sensor, discharge pressure sensor, human-computer dialogue device and GPRSDTU(Internet of Things wireless data terminal) module all is connected with the PLC control module,
Wherein, the intake pressure sensor is arranged at the water inlet end of corresponding water supply arm, and the intake pressure of water supply arm is monitored; The discharge pressure sensor is arranged at the water side of corresponding water supply arm, and the discharge pressure of water supply arm is monitored;
The PLC control module is adjusted the operational factor of frequency converter according to the pressure data that intake pressure sensor and discharge pressure sensor collect;
Frequency converter is adjusted the running status of water pump according to the instruction of PLC control module;
The human-computer dialogue device is used for the human-computer dialogue of operating personnel and PLC control module; During concrete the application, operating personnel can make amendment, adjust operational factor, the control strategy of PLC control module by operating man-machine Interface;
The GPRSDTU module is used for operating personnel to the remote monitoring of PLC control module running status.
The invention allows for a kind of and aforementioned pair of constant voltage arm booster and cooperate the control method of using, its concrete scheme is: prestore into water goal pressure, water outlet goal pressure in the PLC control module; According to following method two constant voltage arm boosters are controlled:
1) PLC control module control water pump low-speed running is awaited orders; Enter step 2);
2) intake pressure sensor and discharge pressure sensor are monitored in real time to the hydraulic pressure of corresponding position, and the hydraulic pressure data that monitor are sent to the PLC control module; Enter step 3);
3) the PLC control module compares discharge pressure and water outlet goal pressure: when being lower than the water outlet goal pressure as if discharge pressure, the control water pump is shut down; Otherwise enter step 4);
4) the PLC control module compares intake pressure and water inlet goal pressure: if when intake pressure is lower than into the water goal pressure, reach the time delay of setting after, the control water pump is shut down; Otherwise enter step 5);
5) water pump normal operation input, the PLC control module is regularly calculated the changing value of discharge pressure in the certain hour section, simultaneously discharge pressure and water outlet goal pressure are compared in real time, during the condition in meeting following a certain control strategy, set, adopt corresponding control strategy that water pump is controlled:
Control strategy A: if in a certain sampling period, the changing value of discharge pressure be on the occasion of, and current discharge pressure then reduces pump rotary speed greater than the water outlet goal pressure;
Control strategy B: if in a certain sampling period, the changing value of discharge pressure is negative value, and current discharge pressure then improves pump rotary speed greater than the water outlet goal pressure;
Control strategy C: if after pump rotary speed reaches the rotating speed lower control limit, in the certain hour section changing value of discharge pressure still be on the occasion of or no change, then control the water pump shutdown;
Control strategy D: if after pump rotary speed reaches the rotating speed upper control limit, the changing value of discharge pressure still is negative value in the certain hour section, then returns step 2);
Under the normal condition, the PLC control module is switched mutually between A, B, three kinds of control strategies of C water pump control.
Further, when the PLC control module is in control strategy A or control strategy B, the PLC control module adopts pid algorithm to calculate the control signal that obtains to export to frequency converter, and frequency converter is regulated the rotating speed of water pump according to control signal, so that the discharge pressure held stationary of water supply arm.
Useful technique effect of the present invention is: two constant voltage arm boosters can carry out dynamically, control in real time the running status of water pump according to variation in water pressure, make the discharge pressure of water supply arm keep constant relatively, make citizen enjoy the water services of high-quality.
Description of drawings
Fig. 1, system architecture schematic diagram of the present invention.
The specific embodiment
A kind of pair of constant voltage arm booster, comprise that being connected municipal water supply is responsible for online many water supply arms (shown in mark D among the figure), adopt built-in mounting means that a water pump 1 is set in every water supply arm, every water pump 1 all disposes a control module separately, and described control module is made up of intake pressure sensor 2, discharge pressure sensor 3, frequency converter 4, PLC control module 5, human-computer dialogue device 6 and GPRSDTU module 7;
Water pump 1 is connected with frequency converter 4; Frequency converter 4, intake pressure sensor 2, discharge pressure sensor 3, human-computer dialogue device 6 and GPRSDTU module 7 five all are connected with PLC control module 5,
Wherein, intake pressure sensor 2 is arranged at the water inlet end of corresponding water supply arm, and the intake pressure of water supply arm is monitored; Discharge pressure sensor 3 is arranged at the water side of corresponding water supply arm, and the discharge pressure of water supply arm is monitored;
PLC control module 5 is adjusted the operational factor of frequency converter 4 according to the pressure data that intake pressure sensor 2 and discharge pressure sensor 3 collect;
Frequency converter 4 is adjusted the running status of water pump 1 according to the instruction of PLC control module 5;
Human-computer dialogue device 6 is used for the human-computer dialogue of operating personnel and PLC control module 5;
GPRSDTU module 7 is used for operating personnel to the remote monitoring to PLC control module 5 running statuses.
The control method of aforementioned pair of constant voltage arm booster is: prestore into water goal pressure, water outlet goal pressure in the PLC control module 5; According to following method two constant voltage arm boosters are controlled:
1) PLC control module 5 control water pumps 1 low-speed running is awaited orders; Enter step 2);
2) hydraulic pressure of intake pressure sensor 2 and 3 pairs of corresponding positions of discharge pressure sensor is monitored in real time, and the hydraulic pressure data that monitor are sent to PLC control module 5; Enter step 3);
3) PLC control module 5 compares discharge pressure and water outlet goal pressure: when being lower than the water outlet goal pressure as if discharge pressure, when this kind situation generally appears at water supply arm existence breakage, leakage or booster, should control water pump 1 and shut down at once, the Awaiting Overhaul personnel deal with after the scene is surveyed again; Otherwise enter step 4);
4) PLC control module 5 compares intake pressure and water inlet goal pressure: if when intake pressure is lower than into the water goal pressure, when this kind situation generally appears at municipal water supply person in charge net insufficient water, this situation might be phenomenon in short-term, also might be because of the water source lack of water cause long the time phenomenon, therefore can set a time delay, recover normal (can be judged to be phenomenon in short-term) as if intake pressure after the time delay that reaches setting, then PLC control module 5 is proceeded subsequent control, if reaching after time delay of setting intake pressure does not return to into the water goal pressure yet and (can be judged to be phenomenon when long, should consider it is the water source lack of water), be responsible for the net burden for avoiding further increasing municipal water supply, should control water pump 1 and shut down; When not satisfying aforementioned condition, enter step 5);
5) water pump 1 normal operation input, PLC control module 5 is regularly calculated the changing value of discharge pressure in the certain hour section, simultaneously discharge pressure and water outlet goal pressure are compared in real time, during the condition in meeting following a certain control strategy, set, adopt corresponding control strategy that water pump 1 is controlled:
Control strategy A: if in a certain sampling period, the changing value of discharge pressure be on the occasion of, and current discharge pressure is greater than the water outlet goal pressure (under the normal condition, this kind situation is generally the discharge pressure rise that descends and cause because of water supply volume), then reduce water pump 1 rotating speed, to avoid high pressure occurring with water spot hydraulic pressure;
Control strategy B: if in a certain sampling period, the changing value of discharge pressure is negative value, and current discharge pressure is greater than the water outlet goal pressure (under the normal condition, this kind situation is generally because water supply volume increases the discharge pressure that causes and descends), then should improve water pump 1 rotating speed, descend to remedy because water supply volume increases the hydraulic pressure that causes;
Control strategy C: if after water pump 1 rotating speed reaches the rotating speed lower control limit, in the certain hour section changing value of discharge pressure still be on the occasion of or no change, under the normal condition, it is zero that this kind situation is generally water supply volume, need not the supercharging of water supply arm, then should control water pump 1 and shut down;
Control strategy D: if after water pump 1 rotating speed reaches the rotating speed upper control limit, the changing value of discharge pressure still is negative value in the certain hour section, then should consider whether to have occurred step 2) or 3) the middle situation of setting, so return step 2), again municipal water supply is responsible for the situation of coming regimen condition and water supply arm of netting and judges;
Under the normal condition, the control of 5 pairs of water pumps 1 of PLC control module is switched mutually between A, B, three kinds of control strategies of C.
Further, when PLC control module 5 is in control strategy A or control strategy B, PLC control module 5 adopts pid algorithm to calculate the control signal that obtains to export to frequency converter 4, and frequency converter 4 is regulated the rotating speed of water pump 1 according to control signal, so that the discharge pressure held stationary of water supply arm.
Claims (3)
1. two constant voltage arm booster, comprise that being connected municipal water supply is responsible for many online water supply arms, it is characterized in that: adopt built-in mounting means that a water pump (1) is set in every water supply arm, every water pump (1) all disposes a control module separately, and described control module is made up of intake pressure sensor (2), discharge pressure sensor (3), frequency converter (4), PLC control module (5), human-computer dialogue device (6) and GPRSDTU module (7);
Water pump (1) is connected with frequency converter (4); Frequency converter (4), intake pressure sensor (2), discharge pressure sensor (3), human-computer dialogue device (6) and GPRSDTU module (7) five all are connected with PLC control module (5),
Wherein, intake pressure sensor (2) is arranged at the water inlet end of corresponding water supply arm, and the intake pressure of water supply arm is monitored; Discharge pressure sensor (3) is arranged at the water side of corresponding water supply arm, and the discharge pressure of water supply arm is monitored;
PLC control module (5) is adjusted the operational factor of frequency converter (4) according to the pressure data that intake pressure sensor (2) and discharge pressure sensor (3) collect;
Frequency converter (4) is adjusted the running status of water pump (1) according to the instruction of PLC control module (5);
Human-computer dialogue device (6) is used for the human-computer dialogue of operating personnel and PLC control module (5);
GPRSDTU module (7) is used for operating personnel the running status of PLC control module (5) is carried out remote monitoring.
2. the control method of described pair of constant voltage arm of claim 1 booster is characterized in that: prestore into water goal pressure, water outlet goal pressure in the PLC control module (5); According to following method two constant voltage arm boosters are controlled:
1) PLC control module (5) control water pump (1) low-speed running is awaited orders; Enter step 2);
2) intake pressure sensor (2) and discharge pressure sensor (3) are monitored in real time to the hydraulic pressure of corresponding position, and the hydraulic pressure data that monitor are sent to PLC control module (5); Enter step 3);
3) PLC control module (5) compares discharge pressure and water outlet goal pressure: when being lower than the water outlet goal pressure as if discharge pressure, control water pump (1) is shut down; Otherwise enter step 4);
4) PLC control module (5) compares intake pressure and water inlet goal pressure: if when intake pressure is lower than into the water goal pressure, reach the time delay of setting after, control water pump (1) is shut down; Otherwise enter step 5);
5) water pump (1) normal operation input, PLC control module (5) is regularly calculated the changing value of discharge pressure in the certain hour section, simultaneously discharge pressure and water outlet goal pressure are compared in real time, during the condition in meeting following a certain control strategy, set, adopt corresponding control strategy that water pump (1) is controlled:
Control strategy A: if in a certain sampling period, the changing value of discharge pressure be on the occasion of, and current discharge pressure then reduces water pump (1) rotating speed greater than the water outlet goal pressure;
Control strategy B: if in a certain sampling period, the changing value of discharge pressure is negative value, and current discharge pressure then improves water pump (1) rotating speed greater than the water outlet goal pressure;
Control strategy C: if after water pump (1) rotating speed reaches the rotating speed lower control limit, in the certain hour section changing value of discharge pressure still be on the occasion of or no change, then control water pump (1) shutdown;
Control strategy D: if after water pump (1) rotating speed reaches the rotating speed upper control limit, the changing value of discharge pressure still is negative value in the certain hour section, then returns step 2);
Under the normal condition, PLC control module (5) is switched mutually between A, B, three kinds of control strategies of C the control of water pump (1).
3. the control method of according to claim 2 pair of constant voltage arm booster, it is characterized in that: when PLC control module (5) is in control strategy A or control strategy B, PLC control module (5) adopts pid algorithm to calculate the control signal that obtains to export to frequency converter (4), frequency converter (4) is regulated the rotating speed of water pump (1) according to control signal, so that the discharge pressure held stationary of water supply arm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310207229.8A CN103243778B (en) | 2013-05-30 | 2013-05-30 | Control method of double constant pressure branch pipe supercharger |
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| CN201310207229.8A CN103243778B (en) | 2013-05-30 | 2013-05-30 | Control method of double constant pressure branch pipe supercharger |
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| CN103243778B CN103243778B (en) | 2014-05-14 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929918A (en) * | 2015-05-18 | 2015-09-23 | 苏州美达斯机电有限公司 | Intelligent control method of water pump |
| CN105256859A (en) * | 2015-09-15 | 2016-01-20 | 苏州艾克威尔科技有限公司 | Water level and water pressure control method |
| CN112502952A (en) * | 2020-11-23 | 2021-03-16 | 湖北佳狮盾智能技术有限公司 | Be used for long-range accurate control system of water pump |
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| CN2568700Y (en) * | 2002-09-23 | 2003-08-27 | 郭敬祝 | Non-negative pressure directly automatic repress appts. for running water |
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| CN2781437Y (en) * | 2005-02-21 | 2006-05-17 | 汕头市金福电器厂有限公司 | Water pump controller |
| CN201928757U (en) * | 2010-12-10 | 2011-08-17 | 南京理工大学 | GPRS wireless transmission network based intelligent monitoring system for water-saving irrigation of farmland |
| CN203270670U (en) * | 2013-05-30 | 2013-11-06 | 重庆成峰二次供水设备有限责任公司 | Double constant-pressure branch-pipe supercharger |
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2013
- 2013-05-30 CN CN201310207229.8A patent/CN103243778B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2568700Y (en) * | 2002-09-23 | 2003-08-27 | 郭敬祝 | Non-negative pressure directly automatic repress appts. for running water |
| JP2006090175A (en) * | 2004-09-22 | 2006-04-06 | Ebara Corp | Water supply device and inverter |
| CN2781437Y (en) * | 2005-02-21 | 2006-05-17 | 汕头市金福电器厂有限公司 | Water pump controller |
| CN201928757U (en) * | 2010-12-10 | 2011-08-17 | 南京理工大学 | GPRS wireless transmission network based intelligent monitoring system for water-saving irrigation of farmland |
| CN203270670U (en) * | 2013-05-30 | 2013-11-06 | 重庆成峰二次供水设备有限责任公司 | Double constant-pressure branch-pipe supercharger |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929918A (en) * | 2015-05-18 | 2015-09-23 | 苏州美达斯机电有限公司 | Intelligent control method of water pump |
| CN105256859A (en) * | 2015-09-15 | 2016-01-20 | 苏州艾克威尔科技有限公司 | Water level and water pressure control method |
| CN112502952A (en) * | 2020-11-23 | 2021-03-16 | 湖北佳狮盾智能技术有限公司 | Be used for long-range accurate control system of water pump |
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| CN103243778B (en) | 2014-05-14 |
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Address after: 402760 No. 1, Building A, Jinyuan, No. 9 Xingwang Road, Bicheng Street, Bishan County, Chongqing Patentee after: Chongqing Chengfeng Water Engineering Co., Ltd. Address before: 402760 No. 1, Building A, Jinyuan, No. 9 Xingwang Road, Bicheng Street, Bishan County, Chongqing Patentee before: Chongqing Zenfirm Secondary Feedwater Equipment Co., Ltd. |