CN205776544U - A kind of frequency conversion motor constant pressure water supply control system - Google Patents
A kind of frequency conversion motor constant pressure water supply control system Download PDFInfo
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- CN205776544U CN205776544U CN201620519045.4U CN201620519045U CN205776544U CN 205776544 U CN205776544 U CN 205776544U CN 201620519045 U CN201620519045 U CN 201620519045U CN 205776544 U CN205776544 U CN 205776544U
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- supply control
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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
Abstract
The utility model discloses a kind of frequency conversion motor constant pressure water supply control system, this frequency conversion motor constant pressure water supply control system, be provided with some water pump compression systems in parallel each other, make when ductwork pressure is less than demand, system can add pump automatically, thus fast lifting ductwork pressure, increase output；When ductwork pressure is less than demand, system can automatically subtract pump even into sleep pattern, thus reduce ductwork pressure, reduces output.Meanwhile, the PID control system being provided with can be arranged by the parameter of converter, adjusts the PID closed-loop parameters of constant pressure water supply system in real time.Use SPFC application macro can be according to the comparison of water supply network pressure feedback value Yu setting value, realize circulating flexible start, according to actual pressure needs, automatically controlled water pump quantity, avoid heavy current impact during motor start-stop, eliminating the water hammer effect of water pump, this utility model is applicable to frequency conversion motor field.
Description
Technical field
This utility model relates to frequency conversion motor field, particularly relates to a kind of frequency conversion motor constant pressure water supply control system.
Background technology
At present, constant pressure water supply is indispensable technology application in modern production life, tradition water tower water storage mode floor space is big, infrastructure investment amount is big, and the most fatal shortcoming is hydraulic pressure can not keep constant, cause ductwork pressure not enough, directly affect the quality of life of industrial production efficiency and its people.It is particularly important in fields such as industrial cooling circulating water system, community domestic waters.
Utility model content
For solving the problems referred to above, this utility model provides a kind of frequency conversion motor constant pressure water supply control system.
This utility model solves its technical problem and be the technical scheme is that
A kind of frequency conversion motor constant pressure water supply control system, water tank including connection municipal tap water, water tank connects some users, it is provided with constant pressure water supply control system between water tank and some users, constant pressure water supply control system is provided with converter, converter passes through SPFC application macro circulating flexible start, converter is additionally provided with the PID control system for the PID closed-loop parameters of adjustment constant pressure water supply system in real time, enter water front end each user and be provided with pressure transducer, pressure transducer detection pressure feedback is to converter, pressure transducer is provided with some water pump compression systems the most in parallel between exporting with water tank, water pump compression system is equipped with water pump, each water pump passes through Frequency Converter Control respectively.
Being further used as the improvement of technical solutions of the utility model, each water pump compression system is equipped with and is included in water and pumps into automatic valve that water front end arranges and at the check-valves of water pump water outlet end.
Being further used as the improvement of technical solutions of the utility model, each water pump compression system front end is provided with hand-operated valve.
Being further used as the improvement of technical solutions of the utility model, enter emergent control passage when being additionally provided with for preventing constant pressure water supply control system to lose efficacy between water front end and water tank each user, emergent control passage is provided with control water pump.
It is further used as the improvement of technical solutions of the utility model, between each water pump and converter, is provided with control switch.
Being further used as the improvement of technical solutions of the utility model, water tank is provided with electrodynamic valve, and electrodynamic valve is controlled by constant pressure water supply control system.
Being further used as the improvement of technical solutions of the utility model, the bottom of water tank is provided with the outlet valve for cleaning.
The beneficial effects of the utility model: this frequency conversion motor constant pressure water supply control system, are provided with some water pump compression systems in parallel each other so that when ductwork pressure is less than demand, and system can add pump automatically, thus fast lifting ductwork pressure, increase output；When ductwork pressure is less than demand, system can automatically subtract pump even into sleep pattern, thus reduce ductwork pressure, reduces output.Meanwhile, the PID control system being provided with can be arranged by the parameter of converter, adjusts the PID closed-loop parameters of constant pressure water supply system in real time.Use the SPFC application macro can according to the comparison of water supply network pressure feedback value Yu setting value, it is achieved circulating flexible start, according to actual pressure needs, automatically controlled water pump quantity, it is to avoid heavy current impact during motor start-stop, eliminate the water hammer effect of water pump.Realize constant voltage to automatically control, it is not necessary to operator's frequent operation, save manual labor's cost.
Accompanying drawing explanation
The utility model is described in further detail below in conjunction with the accompanying drawings:
Fig. 1 is this utility model embodiment overall structure schematic diagram.
Detailed description of the invention
Below with reference to embodiment and accompanying drawing, the technique effect of design of the present utility model, concrete structure and generation is clearly and completely described, to be completely understood by the purpose of this utility model, feature and effect.Obviously; described embodiment is a part of embodiment of the present utility model rather than whole embodiment, based on embodiment of the present utility model; other embodiments that those skilled in the art is obtained on the premise of not paying creative work, belong to the scope of this utility model protection.
With reference to Fig. 1, this utility model is a kind of frequency conversion motor constant pressure water supply control system, water tank 3 including connection municipal tap water 1, water tank 3 connects some users 9, it is provided with constant pressure water supply control system between water tank 3 and some users 9, constant pressure water supply control system is provided with converter 8, converter 8 is by SPFC application macro circulating flexible start, converter 8 is additionally provided with the PID control system for the PID closed-loop parameters of adjustment constant pressure water supply system in real time, enter water front end each user 9 and be provided with pressure transducer 11, pressure transducer 11 detects pressure feedback to converter 8, pressure transducer 11 is provided with some water pump compression systems the most in parallel between exporting with water tank 3, water pump compression system is equipped with water pump 6, each water pump 6 is controlled by converter 8 respectively.
This frequency conversion motor constant pressure water supply control system, is provided with some water pump compression systems in parallel each other so that when ductwork pressure is less than demand, and system can add pump automatically, thus fast lifting ductwork pressure, increase output；When ductwork pressure is less than demand, system can automatically subtract pump even into sleep pattern, thus reduce ductwork pressure, reduces output.Meanwhile, the PID control system being provided with can be arranged by the parameter of converter, adjusts the PID closed-loop parameters of constant pressure water supply system in real time.Use the SPFC application macro can according to the comparison of water supply network pressure feedback value Yu setting value, it is achieved circulating flexible start, according to actual pressure needs, automatically controlled water pump quantity, it is to avoid heavy current impact during motor start-stop, eliminate the water hammer effect of water pump.Realize constant voltage to automatically control, it is not necessary to operator's frequent operation, save manual labor's cost.
As this utility model preferred embodiment, each water pump compression system is equipped with and is included in water pump 6 and enters automatic valve and the check-valves 10 in water pump 6 water side that water front end is arranged.
As this utility model preferred embodiment, each water pump compression system front end is provided with hand-operated valve 4.
As this utility model preferred embodiment, entering emergent control passage when being additionally provided with for preventing constant pressure water supply control system to lose efficacy between water front end and water tank 3 each user 9, emergent control passage is provided with control water pump.
As this utility model preferred embodiment, control switch 7 it is provided with between each water pump 6 and converter 8.
As this utility model preferred embodiment, water tank 3 is provided with electrodynamic valve 2, and electrodynamic valve 2 is controlled by constant pressure water supply control system.
As this utility model preferred embodiment, the bottom of water tank 3 is provided with the outlet valve for cleaning.
This utility model preferred embodiment, water tank 3 including connection municipal tap water 1, some users 9, constant pressure water supply control system, converter 8, SPFC application macro circulating flexible start, PID control system, pressure transducer 11, some water pump compression systems in parallel each other, water pump 6, each water pump 6 is controlled by converter 8 respectively.Pump group and route protection detection are reported to the police, and signal shows.
General constant pressure water supply system uses pressure transducer, PLC and converter as central controller, it is achieved required function；But use the technical solution of the utility model can realize pressure-keeping functions without PLC.It is arranged on the pressure transducer on pipe network main line, for detecting the hydraulic pressure of pipe network, converts the pressure to the electric current of 4 ~ 20 mA or the voltage signal of 0 ~ 10V, it is provided that to converter.The actual pressure of pipe network is compared with setting pressure after feedback, and when ductwork pressure deficiency, converter increases output frequency, and pump rotary speed is accelerated, and forces ductwork pressure to rise, and increases output.Otherwise pump rotary speed slows down, ductwork pressure declines rapidly, reduces output.
Logical self PID controls program and the application macro of SPFC, can realize automatically increasing or decreasing the quantity putting water pump into operation, to meet system requirements.Reduce cost for project, reduce the cost of system later maintenance for user.Owing to converter self is with PID automatic control function and sleep function, when water use peak when, converter can feed back according to ductwork pressure, is automatically adjusted output；When use water low tide at night when, the logic relay of converter can cut off all output, enters sleep state, most significant advantage is that saves energy, and amount of energy saving is generally at 15-40%.
Keep water pressure invariableness；When converter all can not meet current output at full speed, variable frequency pump can automatically switch to power frequency and use, and converter simultaneously drives an other water pump operation, by that analogy, other water pump of circulating flexible start is until the pressure of sensor feedback is equal, to meet actual demand water consumption with setting pressure.
Constant pressure water supply system achieve that water system pressure is stable and flow can on a large scale consecutive variations, thereby may be ensured that user's whenever use water pressure, not appearing in situation that water use peak phase water heater cannot normally use, do not have situation that community high-rise buildings cuts off the water supply because hydraulic pressure is little, more do not have when a fire, spraying system of fire fighting lost efficacy.
After system implementation closed loop water supply, the water of user is all directly fed facilities such as eliminating water tower, open dug reservoir, air pressure tank and avoids " secondary pollution " of domestic water by pipeline！Ensure water supply quality safety and sanitation.
Novel Constant Pressure-Providing Water System had possessed crosses stream, overvoltage, under-voltage, loss phase, short-circuit protection, instantaneous power-off protection, overload, stall protection, the protection of low liquid level, the control of main pump time in turn, perfect in shape and function, Automatic Control, automatic operation, pump
Room is not required to operator, only need to send someone to make regular check on, maintain.
The rotating speed of water pump is no longer that long term maintenance decreases mechanical wear in rated speed operation, reduces motor and fault of water pump rate and the control function self-timing rotation main pump operation of main pump time in turn, ensure each pump even wearing and do not have stuck phenomenon of getting rusty, extend the service life of motor and pump.The SPFC application macro of converter, it is achieved that pump motor soft start, it is to avoid heavy current impact during motor start-stop, eliminates the water hammer effect of water pump.
Constant pressure water supply technology changes motor power frequency because of employing converter, and reaches to regulate pump rotary speed and change water pump discharge pressure, and ratio, by the mode controlling water pump discharge pressure of control valve, has the reduction resistance of ducting and greatly reduces the usefulness of loss of damming.
Owing to variable pump is operated in frequency conversion operating mode, reduce less than metered flow, revolution speed at its rate of discharge, decrease abrasion and the heating of bearing, extend pump and the mechanical service life of motor.
Pump motor uses soft starting mode, accelerates by the acceleration time set, it is to avoid rush of current during motor start-up, line voltage causes the impact of fluctuation, it also avoid motor simultaneously and accelerate suddenly to cause the surge of pumping system.Thoroughly eliminate water hammer.
Constant pressure water supply system is very important for some industry or special user.Such as in some production process, if tap water supply insufficient pressure for some reason or cut off the water supply in short-term, product quality may be affected, time serious, make product rejection and device damage.And for example during breaking out of fire, if pressure of supply water is not enough or or anhydrous supply, it is impossible to put out a fire rapidly, heavy economic losses and casualties may be caused.
Realize constant voltage to automatically control, it is not necessary to operator's frequent operation, save manual labor's cost.Therefore, use constant pressure water supply system, there is bigger economy and social meaning；It is widely used in: in the constant pressure water supply systems such as factory, hotel, Balkh, residential quarter.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art it may also be made that equivalent variations or replacement on the premise of this utility model spirit, and deformation or the replacement of these equivalents are all contained in the application claim limited range.
Claims (7)
- null1. a frequency conversion motor constant pressure water supply control system，It is characterized in that: include connecting the water tank (3) of municipal tap water (1)，Described water tank (3) connects some users (9)，It is provided with constant pressure water supply control system between described water tank (3) and some users (9)，Described constant pressure water supply control system is provided with converter (8)，Described converter (8) passes through SPFC application macro circulating flexible start，Described converter (8) is additionally provided with the PID control system for the PID closed-loop parameters of adjustment constant pressure water supply system in real time，Enter water front end each described user (9) and be provided with pressure transducer (11)，Described pressure transducer (11) detection pressure feedback is to converter (8)，Described pressure transducer (11) is provided with some water pump compression systems the most in parallel between exporting with water tank (3)，Described water pump compression system is equipped with water pump (6)，Each described water pump (6) is controlled by converter (8) respectively.
- Frequency conversion motor constant pressure water supply control system the most according to claim 1, it is characterised in that: each described water pump compression system is equipped with and is included in water pump (6) and enters automatic valve and the check-valves (10) in water pump (6) water side that water front end is arranged.
- Frequency conversion motor constant pressure water supply control system the most according to claim 2, it is characterised in that: each described water pump compression system front end is provided with hand-operated valve (4).
- Frequency conversion motor constant pressure water supply control system the most according to claim 1, it is characterized in that: enter emergent control passage when being additionally provided with for preventing constant pressure water supply control system to lose efficacy between water front end and water tank (3) each described user (9), described emergent control passage is provided with control water pump.
- Frequency conversion motor constant pressure water supply control system the most as claimed in any of claims 1 to 4, it is characterised in that: it is provided with control switch (7) between each described water pump (6) and converter (8).
- Frequency conversion motor constant pressure water supply control system the most as claimed in any of claims 1 to 4, it is characterised in that: described water tank (3) is provided with electrodynamic valve (2), and described electrodynamic valve (2) is controlled by constant pressure water supply control system.
- Frequency conversion motor constant pressure water supply control system the most as claimed in any of claims 1 to 4, it is characterised in that: the bottom of described water tank (3) is provided with the outlet valve for cleaning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620519045.4U CN205776544U (en) | 2016-05-31 | 2016-05-31 | A kind of frequency conversion motor constant pressure water supply control system |
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| CN201620519045.4U CN205776544U (en) | 2016-05-31 | 2016-05-31 | A kind of frequency conversion motor constant pressure water supply control system |
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| CN205776544U true CN205776544U (en) | 2016-12-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035405A (en) * | 2017-12-11 | 2018-05-15 | 国网福建省电力有限公司 | Water supply network water hammer electric control gear |
| CN111271270A (en) * | 2020-01-21 | 2020-06-12 | 奥利机械(集团)有限公司 | Special frequency conversion emergency control system for water supply equipment |
| CN112344419A (en) * | 2020-11-09 | 2021-02-09 | 国网山东省电力公司莱芜供电公司 | Energy-saving analysis system for heating equipment |
-
2016
- 2016-05-31 CN CN201620519045.4U patent/CN205776544U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035405A (en) * | 2017-12-11 | 2018-05-15 | 国网福建省电力有限公司 | Water supply network water hammer electric control gear |
| CN111271270A (en) * | 2020-01-21 | 2020-06-12 | 奥利机械(集团)有限公司 | Special frequency conversion emergency control system for water supply equipment |
| CN112344419A (en) * | 2020-11-09 | 2021-02-09 | 国网山东省电力公司莱芜供电公司 | Energy-saving analysis system for heating equipment |
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