CN2546662Y - Constant pressure variable frequency pump - Google Patents
Constant pressure variable frequency pump Download PDFInfo
- Publication number
- CN2546662Y CN2546662Y CN 01275194 CN01275194U CN2546662Y CN 2546662 Y CN2546662 Y CN 2546662Y CN 01275194 CN01275194 CN 01275194 CN 01275194 U CN01275194 U CN 01275194U CN 2546662 Y CN2546662 Y CN 2546662Y
- Authority
- CN
- China
- Prior art keywords
- pressure
- signal
- constant
- constant pressure
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
Abstract
Disclosed is a constant pressure and variable frequency pump arranged on the pipeline of a water supply system, comprising a pressurized motor, a pressure storage barrel and a pump driven by the pressurized motor. The constant pressure and variable frequency pump also includes a microcomputer constant pressure controller which is connected with the pipeline of the water supply system and can sense the variable pressure values of the water supply pipeline. The variable pressure values are converted to voltage signals and are outputted to the transducer which is connected with the microcomputer constant pressure controller and the pressurized motor. The transducer can transmit variable frequency signals to the pressurized motor to change the rotational speed of the pressured motor according to the signals from the microcomputer constant pressure controller. The sealed metal shell of the utility model can completely shield the outside electromagnetic interference. The utility model can sense the variability of the pressure in the water supply system automatically and send sensing analog signals to change frequency. The transducer can change the rotational speed of the pressurized motor to guarantee constant pressure, variable frequency and variable speed according to the variable signals; thereby, the abrasion is reduced; the quality and safety are improved and the energy is saved.
Description
Technical field
The utility model relates to a kind of pump, the constant pressure frequency conversion pump of the automatic measuring ability of especially a kind of tool, it is signal piping pressure automatically, and output signal gives frequency conversion, and the pump motor promptly changes rotating speed according to the variation of frequency, to reach the water system pressure control pump that constant voltage requires.
Background technique
Because Taiwan is an island, population increases year by year, make the supply of people's livelihood water manifest not enough phenomenon, the supply at water source and unstable among 1 year, and because of the narrow people in ground thick, often in the city all upwards to develop into the master, the room of high buildings and large mansions apartment-type is found everywhere, and every common people that live in apartment building all are subjected to its hardship often deeply because of hydraulic pressure is not enough, especially it is not within minority to have the experience person that can't use hot bath to wash one's hair when cold winter, and resident families are under this kind situation, all between high building water tower top or supply channel, install pressure-increasing machine (being commonly called as press machine) additional, can solve the phenomenon of hydraulic pressure water shortage thus, and the quality bills of materials of general hydraulic press is all unstable, its reason is: only use simple induction meter (pressure switch), when hydraulic pressure was not enough, motor then rotated hydraulic pressure is gone out with all strength, and then motor shuts down when the pressure in the water pipe is enough high, treat to open motor again when inner pipe water pressure is not enough, then cause following disappearance in this way:
1. frequent because of the startup of motor, the enable switch contact burns and fault easily automatically.
2, the water system of motor is variation in pressure up and down, and pressure is suddenly big or suddenly small, and it is sometimes hot and sometimes cold to cause water outlet because of the variation of pressure when using hot water.
3. power consumption is looked the number of starts when water yield (promptly use little) of motor and is increased, as long as pressure is reduced to lower limit, just starts full-speed operation, opens a water tap and ten water taps and is all full-speed operation, the uncontrollable water yield.
The utility model designer is engaged in the research and development of Pressure testing facility and makes and sell existing experience for many years, oneself be not to use one of person simultaneously, so thoughts and feelings is deep especially, because above-mentioned disappearance, be to drop into the research that this kind be commonly called as press machine to send out clogs with all strength, though find to make moderate progress through the facility of improvement, but still can't hide end solution, its reason is: its constant pressure type controller of press machine after improvement, pressure indicator, pressure sensing and controller separate separately, be interfered easily, because of in our surrounding environment, be flooded with magnetic field, and controller must be with the minor variations signal (0.2-0.3mA) that pressure transducer sensed, being amplified to is enough to promote 10 volts of voltages of the required direct current of frequency variator, and be subjected to the interference in vast magnetic field, often make the parts can't stable operation, and the design of separated type, adjustment is difficult for, and main cause especially costs an arm and a leg.
Summary of the invention
The purpose of this utility model is exactly the constant pressure frequency conversion pump that will propose the automatic measuring ability of a kind of tool, to avoid the motor frequent starting, makes discharge pressure stable and overcome magnetic interference, reduce cost.
For reaching above-mentioned purpose, constant pressure frequency conversion pump of the present utility model is installed on the pipeline of a water system, comprises a compression motor, a storage pressure bucket and a pump by this compression motor driving; This constant pressure frequency conversion pump also comprises: a micro computer constant-voltage controller, be connected with the pipeline of this water system, and the change value of pressure of sensing water supply pipline system, and this change value of pressure is converted to voltage signal and exports to frequency variator; One frequency variator is connected with this micro computer constant-voltage controller and compression motor, and according to the signal that the micro computer constant-voltage controller transmission that is received comes, exports frequency variation signal and give compression motor to change the rotating speed of compression motor.
Wherein above-mentioned micro computer constant-voltage controller comprises: one measures loine pressure detects wafer with the pressure that coherent signal comparison foundation is provided; One eliminates the clutter elimination loop that pressure detects the wafer clutter, includes filtering, amplification and buffer circuit; The one pipeline testing circuit that can carry out anhydrous parking and leak and detect is anhydrous or export a reference voltage signal when leaking and give window comparator; One CPU is the power saving wafer of a CMOS, has A/D conversion and plural groups I/O interface; One window comparator is made comparisons signal value and setting value that pipeline testing circuit transmission comes, as the upper and lower limit that exceeds setting value then exports a signal and make function for CPU and judge, and sends signal to light-emitting diode display; One light-emitting diode display, the drive signal of receive window comparator output is with the display action situation; One first section buffering reduction of speed, quick raising speed circuit are according to starting from the anhydrous detecting signal of CPU; One second section buffering vehicle-parking circuit, behind first section buffering reduction of speed, if set time gut line pressure does not change, then send one and prepare the signal of parking to CPU, if set time gut line pressure changes, then send all parkings of cancellation and make the speed signal of rising rapidly to CPU immediately, to supply the pressure difference in the pipeline; One power supply stabilizer, required stabilized power supply when pressure detects wafer and pressure and sets.
Constant pressure frequency conversion pump of the present utility model, pressure is indicated, pressure sensing and pressure control are fused into one, become the pattern of three machine one, and the shell of metallic seal is arranged outward, with isolated all extraneous interference, working stability not only, assembling is simple, and the precision of the digital pressure gauge that it is inner or the range of linearity, also non-general pointer pressure can be compared, the advantage of three machine one of little radio station constant-voltage controller is: but the variation of its automatic voltage measurement power in water system, at any time send sensing analog signal change frequency, frequency variator changes the rotating speed of pump motor according to the variation of signal, to guarantee constant pressure frequency conversion speed change (INVERTER SPEED CONTROL), reduce abrasion, promote quality and safety; Right traditional control pressurer system is the tiny signal that pressure transducer produced of standard, and being amplified to via specific amplifier is enough to promote frequency-variable controller; But many knows are being covered with messy magnetic field in our space, these magnetic fields are a kind of vital wound to the small electric subsignal, so traditional control system of invariable pressure electromagnetic interference often takes place so that pressure instability, control flow is undesired, even burns situation such as electronic equipment.This constant-voltage controller detects wafer from pressure and is sealed in the canister fully to last buffer amplifier circuit, and shell and the interior complete conducting of zero potential of circuit, thus for the electromagnetic interference in the external world can get rid of fully in outside.
Now micro computer constant-voltage controller of the present utility model and other kinds quasi-controller work one are compared as follows table.
Micro computer constant-voltage controller comparison sheet
| Comprehensive variable-frequency type (being mode of the present utility model) | General variable-frequency type (being conventional pressure sensor PID) | Differential pressure type (being the pressure switch formula) | |
| 1. inrush current | Less than rated current | Less than rated current | The 5-6 of rated current doubly |
| 2. consumption electric power | Power saving | Power saving | Take |
| 3. motor life | Long | Long | Short |
| 4. water mallet | Do not have | Do not have | Have |
| 5. output hydraulic pressure | Stable | Still can | Still can |
| 6. anti-tampering | Good | Bad | Very |
| 7. pressure-display | Digital | Pointer-type | Pointer-type |
| 8. display precision | ±1％ | ±10％ | ±10％ |
| 9. parallel running | Simply | Complicated | Complicated |
| 10. mutual running | Simply | Complicated | Complicated |
| 11. useless shutdown | Have | Do not have | Do not have |
| 12. construction distribution | Simply | Complicated | Complicated |
| 13. price | Low | High | Low |
Description of drawings
Fig. 1 is for commonly using pressure controller distribution sketch;
Fig. 2 is a schematic appearance of the present utility model;
Fig. 3 is the utility model constant-voltage controller schematic representation;
Fig. 4 is a circuit detail drawing of the present utility model;
Fig. 5 is an action flow chart of the present utility model.
Embodiment
Figure 1 shows that and commonly use pressure controller distribution sketch, it constitutes situation and disappearance as previously mentioned, herein repeated description no longer.
See also Fig. 2 and be schematic appearance of the present utility model, find out by understanding among the figure, the constant pressure frequency conversion variable speed pump of the automatic measuring ability of this kind tool of the present utility model, its main hardware facility should comprise: a micro computer constant-voltage controller 1, one frequency variator 2, one motor 3, bucket 4 is pressed in one storage, and a pump 5 constitutes, micro computer constant-voltage controller 1 is wherein indicated pressure, pressure sensing and pressure control are fused into one, become the pattern of three machine one, and the shell of metallic seal is arranged outward, with isolated all extraneous interference, be encapsulated in the metal shell variation in pressure of water supply output pipe system 100, can be via 1 perception of micro computer constant-voltage controller, send analogue signal DC0-10V and give frequency variator 2, frequency variator changes frequency according to the variation of signal again, and 3 in pump 5 and motor change according to different frequency and change, become stepless change, to reach constant voltage.
Be illustrated in figure 3 as the action schematic representation of the utility model constant-voltage controller 1, analogue signal 0-10V after pipe-line system 100 is surveyed then changes over to the frequency variator 2 by lead, and wherein micro computer constant-voltage controller 1 includes: one for the digital pressure indicator 11 that shows hydraulic pressure, one for tool pressure measurement, pressure control, little processing center of leaking hunting 12, one for change the pressure wafer module 13 of frequency according to present situation with the control motor rotary speed.
It is promptly shown in Figure 4 to see also circuit detail drawing of the present utility model, wherein the characteristic of each element is as described in the following each point: IC (C) is a stabilizing circuit, form the supply of deciding voltage, deciding electric current, provide pressure to detect wafer and the required stabilized power source of pressure setting, avoid temperature drift, cause the unsettled existing picture of action; IC (D), IC (B) eliminate the loop for the clutter with filtering, amplification and buffering, remove and can eliminate because of pipeline pressure pulsation build-up of pressure wafer produces clutter, and can reduce the capacity that bucket is pressed in the outside storage relatively, to reach the stable volume of exporting and reducing product mix; IC (A), IC (J) are for having the micro computer constant-voltage controller of differential amplification, secondary filtering and pooling feature, pressure is detected the pressure that wafer measured pressure variety and pressure setting device from pipeline set do one relatively, through differential amplifier margin of error is done a suitable amplification, and through secondary filtering and buffering, and reach the control signal of the 0-10VDC that is enough to promote frequency changer; IC (H), IC (I) have anhydrous detecting and the pipeline testing circuit of the detection function that leaks, and can export a reference voltage signal and compare to window comparator when not having water or pipeline to leak.These two no waters stop and the function that detects of leaking is difficult to reach by traditional frequency-changing pressure stabilizing formula; IC (E) is a window comparator, signal and setting value that IC (H), IC (J) are exported are made comparisons, as the upper and lower limit that exceeds setting value then comparator promptly export a signal and make function for CPU and judge that comparator also drives dual-colored LED simultaneously, makes us understand the action situation; IC (F), IC (K) cushion the fast circuit of joining of reduction of speed, quick raising speed function for having first section, when CPU receives the signal that no water detects, promptly notify IC (F), IC (K) to prepare reduction of speed through judging after errorless, the function of buffering reduction of speed is to cause the impact of pipeline when avoiding quick reduction of speed; IC (G), IC power do not change, and CPU promptly notifies IC (G), IC (L) to be prepared to stop after 20 seconds, change as line pressure during this period, and all parking functions of immediate cancel and make speed rise rapidly then are to supply the pressure difference in the pipeline; CPU is the power saving wafer of CMOS, has A/D conversion and many group I/O burden pressure-display functions and function that some are inner and judges.
See also Fig. 5, be action flow chart of the present utility model, by understanding the constant pressure frequency conversion variable speed pump of finding out the automatic measuring ability of this kind tool of the present utility model among the figure, master element micro computer constant-voltage controller 1 wherein, can detect wafer by pressure, detect the variation in pressure in the pipe, export frequency variator 2 to what variation in pressure was transformed into voltage signal this moment, utilize the rotating speed of frequency variator 2 change pumps 5, to reach the purpose of constant voltage.
Wherein, constant pressure frequency conversion pump of the present utility model mainly comprises: a micro computer constant-voltage controller, and with the three machine one forms that pressure-display, pressure sensing and pressure control permeate, there are metal 4 shells of a sealing its outside, and its inside comprises:
One pressure detects wafer, can measure loine pressure, so that the comparison foundation of coherent signal to be provided;
One clutter is eliminated the loop, has the function of filtering, amplification and buffering, eliminates because of pipeline hydraulic pressure arteries and veins
Moving build-up of pressure wafer produces clutter;
One pipeline testing circuit has the anhydrous parking and the detection function that leaks, and reference voltage letter is provided
Number compare to window comparator;
One window comparator is made comparisons variations in line pressure value and setting value, as exceeds setting value
Upper and lower limit is then exported a signal and is done the function judgement for CPU, and driving LED, with the display action situation;
One joins fast circuit, possesses the function of first section buffering reduction of speed, quick raising speed, and foundation is from above-mentioned
The signal of pipeline testing circuit and differentiating;
One buffering is joined fast circuit, is that second section buffering stopped and revisal, behind first section buffering reduction of speed,
Prevent if when not changing because of line pressure in set time notice CPU be prepared to stop, at this
One buffering is joined fast circuit, is that second section buffering stopped and revisal, behind first section buffering reduction of speed,
Prevent if when not changing because of line pressure in set time notice CPU be prepared to stop, at this
Change as line pressure during this time, then all parking functions of immediate cancel and make speed rapidly on
Rise, to supply the pressure difference in the pipeline;
One CPU is the power saving wafer of a CMOS, has A/D conversion and many group I/O burden pressure-display
The function of differentiation and above-mentioned coherent signal is judged;
One power supply stabilizer, required stabilized power supply when providing pressure to detect wafer and pressure to set; Constant pressure frequency conversion pump of the present utility model also comprises: a frequency variator, according to the rotating speed of signal change compression motor; One compression motor; Bucket is pressed in one storage; One pump; It is characterized in that: according to the variation in pressure of water supply pipline system, by the perception of micro computer constant-voltage controller, the output analogue signal DC0-10V give frequency variator, frequency variator is again according to the variation of signal, change frequency, the pump motor promptly changes rotating speed according to the variation of frequency, to reach the requirement of constant voltage, and pumping system removes variable ratio frequency changer, constant voltage, more can detect automatically, anhydrous parking, leaking detects, buffer starting and stopping, make relevant parts be reduced abrasion, saving the energy increases safety in utilization.
From the foregoing, the constant pressure frequency conversion speed-variable pump of this kind tool automatic detection function of the present utility model has the advantage in enhanced performance and service life really.
Claims (4)
1. a constant pressure frequency conversion pump is installed on the pipeline of a water system, comprises a compression motor, a storage pressure bucket and a pump by this compression motor driving; It is characterized in that: this constant pressure frequency conversion pump also comprises:
One micro computer constant-voltage controller is connected with the pipeline of this water system, the change value of pressure of sensing water supply pipline system, and this change value of pressure is converted to voltage signal and exports to frequency variator;
One frequency variator is connected with this micro computer constant-voltage controller and compression motor, and according to the signal that the micro computer constant-voltage controller transmission that is received comes, exports frequency variation signal and give compression motor to change the rotating speed of compression motor.
2. constant pressure frequency conversion pump as claimed in claim 1 is characterized in that: this micro computer constant-voltage controller comprises:
One measures loine pressure detects wafer with the pressure that coherent signal comparison foundation is provided;
One eliminates the clutter elimination loop that pressure detects the wafer clutter, includes filtering, amplification and buffer circuit;
The one pipeline testing circuit that can carry out anhydrous parking and leak and detect is anhydrous or export a reference voltage signal when leaking and give window comparator;
One CPU is the power saving wafer of a CMOS, has A/D conversion and plural groups I/O interface;
One window comparator is made comparisons signal value and setting value that pipeline testing circuit transmission comes, as the upper and lower limit that exceeds setting value then exports a signal and make function for CPU and judge, and sends signal to light-emitting diode display;
One light-emitting diode display, the drive signal of receive window comparator output is with the display action situation;
One first section buffering reduction of speed, quick raising speed circuit are according to starting from the anhydrous detecting signal of CPU;
One second section buffering vehicle-parking circuit, behind first section buffering reduction of speed, if set time gut line pressure does not change, then send one and prepare the signal of parking to CPU, if set time gut line pressure changes, then send all parkings of cancellation and make the speed signal of rising rapidly to CPU immediately, to supply the pressure difference in the pipeline;
One power supply stabilizer, required stabilized power supply when pressure detects wafer and pressure and sets.
3. constant pressure frequency conversion pump as claimed in claim 2 is characterized in that: this second section interior set time of buffering vehicle-parking circuit is 20 seconds.
4. constant pressure frequency conversion pump as claimed in claim 1 or 2 is characterized in that: this micro computer constant-voltage controller is sealed in the metal shell of a maskable undesired signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01275194 CN2546662Y (en) | 2001-12-21 | 2001-12-21 | Constant pressure variable frequency pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01275194 CN2546662Y (en) | 2001-12-21 | 2001-12-21 | Constant pressure variable frequency pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2546662Y true CN2546662Y (en) | 2003-04-23 |
Family
ID=33679666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01275194 Expired - Fee Related CN2546662Y (en) | 2001-12-21 | 2001-12-21 | Constant pressure variable frequency pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2546662Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101025160B (en) * | 2006-02-16 | 2011-06-08 | 日本电产三协株式会社 | Pump and pumping system |
| CN102410234A (en) * | 2011-08-24 | 2012-04-11 | 上海交通大学 | Hydraulic loss testing platform and testing method of canned motor rotor system |
| CN103557545A (en) * | 2013-11-07 | 2014-02-05 | 新疆圣德机电成套设备有限公司 | Combined heat exchanger unit |
| CN103635729A (en) * | 2011-06-30 | 2014-03-12 | 大金工业株式会社 | Refrigerant flow path switching valve and air conditioner using same |
| CN106321463A (en) * | 2015-06-23 | 2017-01-11 | 姚伟 | A centrifugal pump constant pressure control system |
-
2001
- 2001-12-21 CN CN 01275194 patent/CN2546662Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101025160B (en) * | 2006-02-16 | 2011-06-08 | 日本电产三协株式会社 | Pump and pumping system |
| CN103635729A (en) * | 2011-06-30 | 2014-03-12 | 大金工业株式会社 | Refrigerant flow path switching valve and air conditioner using same |
| CN103635729B (en) * | 2011-06-30 | 2015-03-11 | 大金工业株式会社 | Refrigerant flow path switching valve and air conditioner using same |
| CN102410234A (en) * | 2011-08-24 | 2012-04-11 | 上海交通大学 | Hydraulic loss testing platform and testing method of canned motor rotor system |
| CN102410234B (en) * | 2011-08-24 | 2015-10-14 | 上海交通大学 | Shielding generator rotor system hydraulic loss test platform and test method |
| CN103557545A (en) * | 2013-11-07 | 2014-02-05 | 新疆圣德机电成套设备有限公司 | Combined heat exchanger unit |
| CN103557545B (en) * | 2013-11-07 | 2016-08-17 | 新疆圣德机电成套设备有限公司 | Associating heat-exchanger |
| CN106321463A (en) * | 2015-06-23 | 2017-01-11 | 姚伟 | A centrifugal pump constant pressure control system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201202661Y (en) | Constant pressure frequency conversion pump for water supply system | |
| CN214066442U (en) | Waterproof testing arrangement is used in instrument and meter manufacturing | |
| CN2546662Y (en) | Constant pressure variable frequency pump | |
| CN104535279A (en) | Novel waterproof and dustproof level dry detection method and device | |
| CN203422203U (en) | Air tightness detection apparatus for sealed bearing | |
| CN217483830U (en) | Gear pump test bench | |
| CN216246996U (en) | Pressure sensor maintains check out test set | |
| CN207131561U (en) | A kind of colliery Pneumatic water pump performance testing device and system | |
| CN206696096U (en) | A kind of material property detection device based on hydraulic pressure bulging | |
| CN213956519U (en) | Intelligent water level measuring equipment | |
| CN205426283U (en) | Anticorrosion liquid level detection device | |
| CN110907077B (en) | Small motor dynamometer | |
| CN219038286U (en) | Rubber gasket testing device | |
| CN110411535A (en) | A kind of capacitance type liquid level detection circuit and detection method | |
| CN2498601Y (en) | Mechanical sealing pressure tester | |
| CN219757942U (en) | Pipeline pressure testing device | |
| CN216160549U (en) | Diffusion type and pump suction type integrated gas detector | |
| CN211205675U (en) | Differential pressure leakage detection device for heat transfer pipe of nuclear power plant | |
| CN116929469B (en) | Differential pressure flowmeter high-low pressure conversion method and differential pressure flowmeter flow measuring method | |
| CN113049032B (en) | Pump house flood-proof early warning system | |
| CN219369120U (en) | Improved flow testing tool based on air compressor | |
| CN201902339U (en) | Synchronous self-priming pump for laminated compressor | |
| CN216642665U (en) | Safety detection device for hydraulic pump station | |
| CN221098338U (en) | Automatic exhaust and drainage device for large-caliber liquid metering standard pipeline | |
| CN218865397U (en) | Leakage detection device for maintenance cover plate of galvanic pile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |