CN1045832A - Water supply equipment with automatic speed adjustment and pressure variation - Google Patents
Water supply equipment with automatic speed adjustment and pressure variation Download PDFInfo
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- CN1045832A CN1045832A CN 90102091 CN90102091A CN1045832A CN 1045832 A CN1045832 A CN 1045832A CN 90102091 CN90102091 CN 90102091 CN 90102091 A CN90102091 A CN 90102091A CN 1045832 A CN1045832 A CN 1045832A
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- water supply
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Abstract
A kind of water supply equipment with automatic speed adjustment and pressure variation, having solved existing microcomputer control automatic water supply equipment pump motor when low discharge water supply or zero delivery still remains in operation, but the problem of decrease in efficiency, be characterised in that differential pressure transmitter and the pressure controller that links with variable-frequency governor is installed on water supply line, on the pipeline that supplies water to the user, a small-sized regulating tank is installed, advantage is that equipment is in operation can be according to the big or small automatic speed regulation of water supply volume, variable-pressure water supply promptly can be brought into play the efficient of variable-frequency governor and motor water pump to greatest extent.Can prevent water supply volume hour or not unnecessary power consumption and unnecessary wearing and tearing of motor and water pump during water again.
Description
The invention belongs to a kind of water supply facilities, particularly a kind of water supply equipment with automatic speed adjustment and pressure variation.
Be fixed on tap water pressurized water supply facilities on the building take to feed water water tower, roof high level cistern in early days, because its cost is high and influence fabric structure intensity and shock resistance is replaced by pneumatic installation water supply; But there is the equipment heaviness again in pneumatic installation water supply, and floor space is big, and its critical piece air pressure tank steel consumption is big and starting mode of pump is frequent, and power consumption is bigger, the pressure of supply water problem such as also bigger that just fluctuates.In order to address the above problem, a kind of " microcomputer control automatic water supply equipment " disclosed in application number is 88216717.0 patent application, this equipment is that pressure transmitter and adjuster are installed on water supply line, one end of adjuster connects variable-frequency governor and controls the revolution of motor water pump by variable-frequency governor, the motor revolution changes with the size of water supply volume, and the pressure of supply water in the water supply network is constant steadily.This microcomputer control water supply facilities reduces building area 40% owing to cancelled air pressure tank, and power consumption also reduces greatly, is the capital equipment of present water supply industry.But this microcomputer control automatic water supply equipment is owing to take the mode of constant pressure water supply, and constant in order to guarantee to manage internal pressure, when low discharge or zero delivery, pump motor still remains in operation, but decrease in efficiency; And, because constant pressure water supply, head loss when pressure set points often is selected in maximum water supply volume adds on the value of actual used water elevation sum, water supply volume hour (head loss is also less), should reduce pressure of supply water, reduce power consumption, but because equipment itself can only constant pressure water supply, so, even pressure set-point is also very high, in water supply process in water supply volume hour,, pressure maintains on the setup pressure value all the time, causes the unnecessary wearing and tearing of unnecessary power consumption and pump motor.
The objective of the invention is to solve existing existing the problems referred to above of constant pressure water supply equipment, provide a kind of can automatic speed regulation, variable-pressure water supply, hour can autostop or shut down the back and continue the water supply equipment with automatic speed adjustment and pressure variation that low discharge supplies water in water supply volume.
The present invention is by motor water pump, water supply line, VVVF variable-frequency governor and pressure controller are formed, a differential pressure transmitter that is used to measure supply channel pressure reduction and flow is installed on the pressure signal pipe at the differential pressure control valve two ends on the water supply line, in service at equipment, variation along with flow, the pressure reduction at pressure-difference valve two ends changes, when flow increases, pressure reduction increases, the signal of pressure difference transmitter also increases and by lead this signal is delivered to the VVVF variable-frequency governor, frequency rises, and drives the motor revolution and improves, and output and pipe internal pressure improve thereupon; Otherwise when flow reduced, pressure reduction reduced, and the signal of pressure difference transmitter also diminishes, and by lead this signal was delivered to the VVVF variable-frequency governor, and frequency reduces, and motor slows down, and output and pipe internal pressure decrease, thereby realize variable-pressure water supply; When water supply volume is zero, also stop simultaneously supplying water by the shutdown of pressure controller control variable-frequency governor.But for be implemented in water supply volume hour allow motor and water pump and variable-frequency governor shut down but simultaneously low discharge supply water to reach the purpose of economize on electricity to the user; on the pipeline that supplies water to the user, a small-sized regulating tank has been installed also; when water supply volume is big; equipment directly supplies water to the user; part water is stored in the small-sized regulating tank; when water supply volume hour or when stopping water, make motor and water pump out of service by pressure controller control, and supply water by small-sized regulating tank compensation.
The invention has the advantages that simple in structure, owing to adopt the variable-pressure water supply mode, equipment is in operation can be according to the big or small automatic speed regulation of water supply volume, variable-pressure water supply, when, pump efficiency less in water supply volume is low, motor water pump and variable-frequency governor can be out of service, supply water and only replenish with small-sized regulating tank, therefore, promptly can bring into play the efficient of variable-frequency governor and motor water pump to greatest extent, can prevent water supply volume hour or not unnecessary power consumption and unnecessary wearing and tearing of motor and water pump during water again.
Fig. 1 is a system architecture schematic diagram of the present invention.
Provide embodiments of the invention below in conjunction with Fig. 1:
As shown in Figure 1, the present invention has one and power supply air switch 1 joining VVVF variable-frequency governor 2, the lead 13 of drawing from variable-frequency governor 2 is connected with the motor water pump 3 that is used to provide water, the water inlet pipe of motor water pump 3 connects with pond or water tank 12 and in the pump water inlet bottom bottom valve (flap valve) is installed, on the pumping line of motor water pump 3, be connected with the water supply line 10 that supplies water to the user by gate valve, a differential pressure control valve 4 is installed on water supply line 10, draw a pair of pressure signal pipe 11 at the two ends of differential pressure control valve 4, a differential pressure transmitter 5 that is used to measure supply channel pressure reduction and flow is installed on pressure signal pipe 11, differential pressure transmitter 5 connects with variable-frequency governor 2 by lead 14, a pressure control joint device 6 that can be switched on or switched off circuit when pressure reaches setting value is being installed on the water supply line 10, pressure controller 6 connects with variable-frequency governor 2 by lead 15, on the pipeline 10 that supplies water to the user, a small-sized regulating tank 7 is installed also, said small-sized regulating tank 7 is the air pressure adjustment jar of capsule formula or membrane type, its volume is for adopting pneumatic installation water supply 1/5～1/20 of when the identical output volume of pressure tank that supplies water fully, (with output per hour 100 cubic metres be example, the volume of air pressure tank is 30 cubic metres when adopting pneumatic installation water supply to supply water fully, and adopts the volume of small pneumatic jar of the present invention only to be 1.5～6 cubic metres); On water supply line 10, also be equipped with gate valve 8 and flap valve 9, connect with water supply network then.
Claims (3)
1, a kind of water supply equipment with automatic speed adjustment and pressure variation, comprise water pump, motor, water supply line and variable-frequency governor, it is characterized in that, a differential pressure transmitter that is used to measure supply channel pressure reduction and flow is installed on the pressure signal pipe at differential pressure control valve two ends on the water supply line, the pressure controller that can be switched on or switched off circuit when pressure reaches setting value is being installed on the water supply line, and said differential pressure transmitter and pressure controller link with lead and variable-frequency governor respectively.
2, according to the said water supply equipment with automatic speed adjustment and pressure variation of claim 1, it is characterized in that, on the pipeline that supplies water to the user, a small-sized regulating tank is installed.
3, according to the said water supply equipment with automatic speed adjustment and pressure variation of claim 2, it is characterized in that the air pressure adjustment jar that said small-sized regulating tank is capsule formula or membrane type.Its volume is for adopting pneumatic installation water supply 1/5～1/20 of when the identical output volume of pressure tank that supplies water fully.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90102091 CN1045832A (en) | 1990-04-09 | 1990-04-09 | Water supply equipment with automatic speed adjustment and pressure variation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90102091 CN1045832A (en) | 1990-04-09 | 1990-04-09 | Water supply equipment with automatic speed adjustment and pressure variation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1045832A true CN1045832A (en) | 1990-10-03 |
Family
ID=4877369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90102091 Pending CN1045832A (en) | 1990-04-09 | 1990-04-09 | Water supply equipment with automatic speed adjustment and pressure variation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1045832A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371930C (en) * | 2003-01-04 | 2008-02-27 | 姚福来 | Energy-saving design, calculation and operation method of water pump blowe fan station and computer program product |
| CN102490891A (en) * | 2011-11-20 | 2012-06-13 | 渤海造船厂集团有限公司 | Boat low-temperature fresh water flow rate distribution regulation method |
| CN114442710A (en) * | 2022-01-24 | 2022-05-06 | 中冶长天国际工程有限责任公司 | Water supply control system and method for material mixing and pelletizing process and storage medium |
-
1990
- 1990-04-09 CN CN 90102091 patent/CN1045832A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371930C (en) * | 2003-01-04 | 2008-02-27 | 姚福来 | Energy-saving design, calculation and operation method of water pump blowe fan station and computer program product |
| CN102490891A (en) * | 2011-11-20 | 2012-06-13 | 渤海造船厂集团有限公司 | Boat low-temperature fresh water flow rate distribution regulation method |
| CN102490891B (en) * | 2011-11-20 | 2014-06-18 | 渤海造船厂集团有限公司 | Boat low-temperature fresh water flow rate distribution regulation method |
| CN114442710A (en) * | 2022-01-24 | 2022-05-06 | 中冶长天国际工程有限责任公司 | Water supply control system and method for material mixing and pelletizing process and storage medium |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |