CN208202009U - Dual pressure sensor detecting and controlling system under freq uency conversion supercharging water supply pattern - Google Patents
Dual pressure sensor detecting and controlling system under freq uency conversion supercharging water supply pattern Download PDFInfo
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- CN208202009U CN208202009U CN201820591217.8U CN201820591217U CN208202009U CN 208202009 U CN208202009 U CN 208202009U CN 201820591217 U CN201820591217 U CN 201820591217U CN 208202009 U CN208202009 U CN 208202009U
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Abstract
The utility model relates to supply equipment technical fields, in particular to the dual pressure sensor detecting and controlling system under freq uency conversion supercharging water supply pattern, including control cabinet, 1# vertical multi-stage centrifugal pump water pump, 1# pressure sensor, 2# vertical multi-stage centrifugal pump water pump, 2# pressure sensor, 3# vertical multi-stage centrifugal pump water pump, outlet conduit, water inlet line, pedestal, diaphragm air pressure tank, 1# pressure sensor and 2# pressure sensor are both connected on outlet conduit, 1# pressure sensor and 2# pressure sensor are connected with control cabinet, 1# pressure sensor and 2# pressure sensor are mounted on above outlet conduit at the same horizontal position.The utility model provide it is a kind of it is of a tightly knit structure, reliable for operation, easy to operate, energy-efficient, small in size it is easy for installation, solves the problems, such as that measurement water outlet pressure is inaccurate, meet the dual pressure sensor detecting and controlling system under the freq uency conversion supercharging water supply pattern of the novel water requirements of national regulation.
Description
Technical field
The utility model relates to supply equipment technical fields, in particular to double pressure sensings under freq uency conversion supercharging water supply pattern
Device detecting and controlling system.
Background technique
In real life water, water consumption is the process of a dynamic change, and peak period water consumption is big in the morning, afternoon and evening, morning
Substantially useless water afterwards, if not using Frequency Converter Control, then water pump will keep oepration at full load, both power-consuming and using effect
Bad, the traditional technology in China is using frequency control control system of invariable pressure.Its core is alternating frequency conversion technique and PLC control skill
Art.Frequency converter, PLC controller, pressure sensor, contactor and other electrical components form closed-loop control system.According to water supply
Pressure set points automatically adjust the revolving speed and operation number of units of water pump, and the pressure of water supply network is made to keep the pressure set and required stream
Amount, to achieve the purpose that improve water supply quality and energy-efficient.But it since outlet is only mounted with a pressure sensor, lacks
Weary stability, when pressure sensor damages suddenly, the value of pressure sensor may be not allowed, when pressure sensor can't detect
It when discharge pressure, is likely to result in water pump and is pressurized always, so that water pipe be caused to burst, consequence is serious.
Utility model content
In view of problem above, the utility model provide it is a kind of it is of a tightly knit structure, reliable for operation, easy to operate, energy-efficient,
It is small in size it is easy for installation, solve the problems, such as measurement water outlet pressure inaccuracy, meet the frequency conversion of the novel water requirements of national regulation
Dual pressure sensor detecting and controlling system under pressurized water supply mode.
In order to realize above-mentioned purpose of utility model, the utility model the following technical schemes are provided:
Dual pressure sensor detecting and controlling system in the utility model under freq uency conversion supercharging water supply pattern, including control cabinet,
1# vertical multi-stage centrifugal pump water pump, 1# pressure sensor, 2# vertical multi-stage centrifugal pump water pump, 2# pressure sensor, 3# are vertical more
Grade centrifugal pump water pump, outlet conduit, water inlet line, pedestal, diaphragm air pressure tank, the 1# vertical multi-stage centrifugal pump water pump, 2# are vertical
Formula centrifugal multistage pump multiple centrifugal pump water pump and 3# vertical multi-stage centrifugal pump water pump are connected on water inlet line side by side, several vertical multi-stage centrifugal pumps
Water pump is realized and is supplied water for being pressurized to pipe network.The 1# pressure sensor and 2# pressure sensor are both connected to outlet pipe
On road, for acquiring the data of discharge pressure in real time.The 1# pressure sensor and 2# pressure sensor are connected with control cabinet,
The 1# pressure sensor and 2# pressure sensor are mounted on above outlet conduit at the same horizontal position, to ensure that 1# pressure passes
The measured value of sensor and the measured value of 2# pressure sensor are essentially identical, and error is in allowed limits.The diaphragm air pressure tank
It is arranged in 3# vertical multi-stage centrifugal pump water pump side, the diaphragm air pressure tank is connected with outlet conduit, and diaphragm air pressure tank is a kind of
Sealing container is pressurizeed when big flow supplies water by water pump, and the gas stored in tank is compressed；In small flow, let out by compressed gas
The water being stored in tank is transported to water supply network by compression swelling, supplements the small flow water or pipeline leakage of user, while making to lead
Pump is in shutdown status in small flow and zero delivery water.
Further, the 1# vertical multi-stage centrifugal pump water pump, 2# vertical multi-stage centrifugal pump water pump, the centrifugation of 3# vertical multi-stage
It pumps pump and diaphragm air pressure tank is fixed on pedestal,
Further, gsm module is provided in the control cabinet.
Further, the level height of the outlet conduit installation is higher than the level height of water inlet line.
Further, the 1# pressure sensor and 2# pressure sensor pass through connecting pipe and are connected on outlet conduit,
Head of liquid in the connecting pipe of both sides keeps balance.
Further, the 1# pressure sensor and 2# pressure sensor are with its respective connecting pipe it is ensured that interface is close
Obturaging real is not in pressure leakages.
Further, the connecting pipe is located at the side of outlet conduit, accurate to measure to avoid the precipitating of dregs in pipeline
Fluid flow.To avoid impurity from depositing in connecting pipe, connecting pipe should be short as far as possible.
Further, the connecting pipe should be mounted on temperature gradient and the small pipeline location of temperature fluctuation.
Advantages and beneficial effects of the utility model lie in that providing a kind of of a tightly knit structure, reliable for operation, easy to operate, section
Can it is efficient, small in size it is easy for installation, solves the problems, such as that measurement water outlet pressure is inaccurate, meet the novel water requirements of national regulation
Freq uency conversion supercharging water supply pattern under dual pressure sensor detecting and controlling system.
The system uses pump variable frequency Isobarically Control, and no matter how system water amount changes, and can make pipe outlet pressure
It keeps constant；Using variable-frequency governor and high-performance water pump, has the function of perfect defencive function and automatic, manual switch, make
Operation is very reliable and functional, control mode is flexible, strong antijamming capability；Can according to the variation of user's water consumption come
Pump rotary speed is adjusted, water pump is made to always work in high efficient district, power savings are obvious, can economize on electricity 35% than constant speed water pump；Using complete
It automatically controls, PID is adjusted, keyboard operation, man-machine interface (text, number) display.Operator need to only convert power control cabinet switch,
It can realize operating condition needed for user, realize full-automatic unmanned on duty；With perfect overload, short circuit, over-voltage, under-voltage, phase shortage,
The automatic protection functions such as overcurrent, short circuit, water source water shortage；It can be carried out signal alarm, self-test, breakdown judge etc. in abnormal cases；
Complete equipment only has one group of water supply control cabinet and water pump assembly, installs very simple and convenient；Increase a pressure sensor, meets
The novel water requirements of national regulation.After dual pressure sensor, judge automatically whether pressure sensor damages according to algorithm, without value
Class personnel judge that any pressure sensor is faulty, be all sent to operator on duty's mobile phone by gsm module.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is control system architecture schematic diagram.
Fig. 2 is control cabinet structural schematic diagram.
Fig. 3 is the principle algorithm for judging pressure sensor and whether damaging.
Description of symbols
1.1# vertical multi-stage centrifugal pump water pump 2.1# pressure sensor 3.2# vertical multi-stage centrifugal pump water pump
6. outlet conduit of 4.2# pressure sensor 5.3# vertical multi-stage centrifugal pump water pump, 7. water inlet line
8. 9. air pressure tank of pedestal
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is further described.Implement below
Example is only used for clearly illustrating the technical solution of the utility model, and cannot be used as a limitation the protection model of limitation the utility model
It encloses.
Dual pressure sensor detecting and controlling system under freq uency conversion supercharging water supply pattern, as illustrated in fig. 1 and 2, including control cabinet,
1# vertical multi-stage centrifugal pump water pump 1,1# pressure sensor 2,2# vertical multi-stage centrifugal pump water pump 3,2# pressure sensor 4,3# are vertical
Formula centrifugal multistage pump multiple centrifugal pump water pump 5, outlet conduit 6, water inlet line 7, pedestal 8, diaphragm air pressure tank 9,1# vertical multi-stage centrifugal pump water pump
1,2# vertical multi-stage centrifugal pump water pump 3 and 3# vertical multi-stage centrifugal pump water pump 5 are connected to side by side on water inlet line 7, and several vertical
Centrifugal multistage pump multiple centrifugal pump water pump is realized and is supplied water for being pressurized to pipe network.1# pressure sensor 2 and 2# pressure sensor 4 are all connected with
On outlet conduit 6, for acquiring the data of discharge pressure in real time.1# pressure sensor 2 and 2# pressure sensor 4 with control
Cabinet is connected, and gsm module is provided in control cabinet.1# pressure sensor 2 and 2# pressure sensor 4 are mounted on 6 top of outlet conduit
At the same horizontal position, with ensure 1# pressure sensor measured value and 2# pressure sensor measured value it is essentially identical, error
In allowed limits.Diaphragm air pressure tank 9 is arranged in 5 side of 3# vertical multi-stage centrifugal pump water pump, diaphragm air pressure tank 9 and outlet pipe
Road 6 is connected, and diaphragm air pressure tank is that a kind of sealing container is pressurizeed when big flow supplies water by water pump, and the gas stored in tank is pressed
Contracting；It in small flow, is expanded by compressed gas pressure release, the water being stored in tank is transported to water supply network, supplements the small of user
Flow water or pipeline leakage, while making main pump in small flow and zero delivery water in shutdown status.1# vertical multi-stage from
Heart pump water pump 1,2# vertical multi-stage centrifugal pump water pump 3,3# vertical multi-stage centrifugal pump water pump 5 and diaphragm air pressure tank 9 are fixed on
On pedestal 8, the level height that outlet conduit 6 is installed is higher than the level height of water inlet line 7.
1# pressure sensor 2 and 2# pressure sensor 4 are connected on outlet conduit 6 by connecting pipe, both sides connecting pipe
Interior head of liquid keeps balance.1# pressure sensor 2 and 2# pressure sensor 4 and its respective connecting pipe are it is ensured that interface
Sealing is not in tightly pressure leakages.Connecting pipe is located at the side of outlet conduit 6, quasi- to avoid the precipitating of dregs in pipeline
Really measurement fluid flow.To avoid impurity from depositing in connecting pipe, connecting pipe should be short as far as possible.Connecting pipe should be mounted on temperature gradient
The small pipeline location with temperature fluctuation.
2 pressure sensors, respectively 1# pressure sensor 2 and 2# pressure sensor 4, control are installed in outlet conduit 6
System by acquiring the pressure value of two pressure sensors and by detection algorithm real-time judge in real time, if 2 equal fault-frees
When, the foundation that the average value of acquisition the two is controlled as constant pressure water supply, when any pressure sensor breaks down, system is automatic
Acquire the pressure value of the non-fault sensor of another.Control system issues alarm signal in synchronization automatically and passes through GSM mould
Block sends sensor failure signals to corresponding operator on duty's mobile phone.
In Fig. 3, Ρ 1 is the measured value of 1# discharge pressure sensor.Ρ 2 is the measured value of 2# discharge pressure sensor,
Δ Ρ be 1# discharge pressure sensor and 2# discharge pressure sensor absolute value of the difference.δ is the equal fault-free of pressure sensor
When error amount, if the absolute value of the difference between Ρ 1 and Ρ 2 between 0- δ, illustrates that two pressure sensors are without reason
Barrier.If the absolute value of the difference between Ρ 1 and Ρ 2 between 0- δ, do not illustrate 2 pressure sensors or not value difference compared with
Greatly, having a pressure sensor certainly is that measurement is inaccurate, and Ρ i measures the sample mean of water pressure sensor when being fault-free
Value.Δ Ρ 1 measures the absolute value of the difference of water pressure sensor when being the measured value and fault-free of 1# pressure sensor.ΔΡ
2 measure the absolute value of the difference of water pressure sensor when being the measured value and fault-free of 2# pressure sensor.If Δ Ρ 1 is small
In δ, then illustrate that the measured value of 1# pressure sensor in error loss range, illustrates 1# pressure sensor fault-free, then 1#
The foundation that the value of pressure sensor is controlled as constant pressure water supply, then 2# pressure sensor failure.Similarly, conversely, then can determine that for
1# pressure sensor failure.
Before a whole set of supercharging equipment puts into operation, the related operating parameter such as operating pressure of set device is answered first, carries out machine
Prepare before group starting；When equipment is run, by pressure sensor continuous acquisition water outlet ductwork pressure, and it is converted into electric signal
It is sent to frequency-changing control system, the signal fed back is compared and operation by control system with the operating pressure of setting；Add
Pump process: the water outlet ductwork pressure that system detection arrives is lower than setting pressure, then control system issues instruction and increases electric machine frequency,
Water pump Accelerating running, until water pump power frequency works, system continues to test pressure at this time, if the pressure that system detection arrives is still than setting
Pressure is low, then the water pump can be switched to power frequency operation by control system, and lower water pump of variable frequency starting simultaneously, until water outlet
Ductwork pressure reaches setting pressure, and water pump is maintained at frequency operation at this time.Subtract pump process: system water amount is reduced, system
When detecting that water outlet ductwork pressure is higher than setting pressure, then system command water pump runs slowly, when being reduced to the effective of water pump
After revolving speed, then the water pump started at first in the water pump that runs is out of service, that is, reduces the operation number of units of water pump, until water outlet end pipe
Network pressure power is constant in setting pressure limit.Main pump stops working, and auxiliary pump is supplied water also as variable frequency water supply mode, further mentions
High working efficiency, it is energy saving.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (8)
1. the dual pressure sensor detecting and controlling system under freq uency conversion supercharging water supply pattern, which is characterized in that vertical including control cabinet, 1#
Formula centrifugal multistage pump multiple centrifugal pump water pump, 1# pressure sensor, 2# vertical multi-stage centrifugal pump water pump, 2# pressure sensor, 3# vertical multi-stage from
Heart pump water pump, outlet conduit, water inlet line, pedestal and diaphragm air pressure tank, the 1# vertical multi-stage centrifugal pump water pump, 2# are vertical more
Grade centrifugal pump water pump and 3# vertical multi-stage centrifugal pump water pump are connected on water inlet line side by side, the 1# pressure sensor and 2# pressure
Force snesor is both connected on outlet conduit, and the 1# pressure sensor and 2# pressure sensor are connected with control cabinet, described
1# pressure sensor and 2# pressure sensor are mounted on above outlet conduit at the same horizontal position, the diaphragm air pressure tank setting
In 3# vertical multi-stage centrifugal pump water pump side, the diaphragm air pressure tank is connected with outlet conduit.
2. the dual pressure sensor detecting and controlling system under freq uency conversion supercharging water supply pattern according to claim 1, feature
It is, the 1# vertical multi-stage centrifugal pump water pump, 2# vertical multi-stage centrifugal pump water pump, 3# vertical multi-stage centrifugal pump water pump and diaphragm
Air pressure tank is fixed on pedestal.
3. the dual pressure sensor detecting and controlling system under freq uency conversion supercharging water supply pattern according to claim 1, feature
It is, is provided with gsm module in the control cabinet.
4. the dual pressure sensor detecting and controlling system under freq uency conversion supercharging water supply pattern according to claim 1, feature
It is, the level height of the outlet conduit installation is higher than the level height of water inlet line.
5. the dual pressure sensor detecting and controlling system under freq uency conversion supercharging water supply pattern according to claim 1, feature
It is, the 1# pressure sensor and 2# pressure sensor pass through connecting pipe and be connected on outlet conduit, in the connecting pipe of both sides
Head of liquid keep balance.
6. the dual pressure sensor detecting and controlling system under freq uency conversion supercharging water supply pattern according to claim 1 or 5, special
Sign is that the 1# pressure sensor and 2# pressure sensor and its respective connecting pipe are it is ensured that interface sealing tightly will not
There are pressure leakages.
7. the dual pressure sensor detecting and controlling system under freq uency conversion supercharging water supply pattern according to claim 5, feature
It is, the connecting pipe is located at the side of outlet conduit, to avoid the precipitating of dregs in pipeline, accurately measures fluid flow.
8. the dual pressure sensor detecting and controlling system under freq uency conversion supercharging water supply pattern according to claim 5, feature
It is, the connecting pipe should be mounted on temperature gradient and the small pipeline location of temperature fluctuation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820591217.8U CN208202009U (en) | 2018-04-24 | 2018-04-24 | Dual pressure sensor detecting and controlling system under freq uency conversion supercharging water supply pattern |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820591217.8U CN208202009U (en) | 2018-04-24 | 2018-04-24 | Dual pressure sensor detecting and controlling system under freq uency conversion supercharging water supply pattern |
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| CN208202009U true CN208202009U (en) | 2018-12-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109481983A (en) * | 2018-12-21 | 2019-03-19 | 养云科技(宁波)有限公司 | A kind of water dispenser with remote service function |
-
2018
- 2018-04-24 CN CN201820591217.8U patent/CN208202009U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109481983A (en) * | 2018-12-21 | 2019-03-19 | 养云科技(宁波)有限公司 | A kind of water dispenser with remote service function |
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