CN208456836U - It is a kind of for measuring the data acquisition device of pump group revolving speed and lift - Google Patents
It is a kind of for measuring the data acquisition device of pump group revolving speed and lift Download PDFInfo
- Publication number
- CN208456836U CN208456836U CN201820909813.6U CN201820909813U CN208456836U CN 208456836 U CN208456836 U CN 208456836U CN 201820909813 U CN201820909813 U CN 201820909813U CN 208456836 U CN208456836 U CN 208456836U
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- signal
- circuit
- lift
- revolving speed
- collecting card
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Abstract
The utility model discloses a kind of for measuring the data acquisition device of pump group revolving speed and lift, including the quenched circuit of 3-axis acceleration device, signal and data collecting card；3-axis acceleration device is installed on inside pump shell close to unit fixed on water pump suction side, electric signal is sampled and be converted to the vibration signal of water pump, then be transferred to the quenched circuit of signal；The quenched circuit of signal includes amplifying circuit and filter circuit, amplifying circuit amplifies processing to the electric signal from 3-axis acceleration device, filter circuit is filtered amplified electric signal and is transferred to data collecting card with after anti-aliasing processing, data collecting card transmits a signal to spectrum analyzer again and carries out spectrum analysis, spectrum analyzer exports high-frequency signal and handles to sampling processing and frequency processing device, so that subsequent calculating revolving speed and lift data use.The utility model provides hardware supported to calculate pump group revolving speed and lift data, facilitates operation and saves measurement cost.
Description
Technical field
It is specially a kind of for measuring pump group revolving speed and lift the utility model relates to pump group performance detection technical field
Data acquisition device.
Background technique
In existing national economy, pump group plays more and more important in industrial and agricultural production and daily life
Effect.Greatly to being project of South-to-North water diversion, the small normal life to people suffers from the figure of pump.Therefore, for pump group correlation
The measurement of energy is just particularly important, and revolving speed is the most important thing in the operating parameter of pump group, the fortune of moment reaction pump group
Row operating condition.The method of the pump group revolving speed of measurement monitoring at present has digital method, flicker method, Measuring Frequency Method, measuring period method, but these methods need
There is exposed rotary part that can use, measurement process has biggish limitation.In addition, some poisonous and harmful when conveying
When substance, commonly using to integrated pump group, since this pump group does not have exposed rotary part, above method be not just applicable in,
The measurement and monitoring of its lift and revolving speed are created great difficulties.
Utility model content
In view of the above-mentioned problems, the purpose of this utility model is to provide one kind to be suitable for various types of pump groups, especially
There is no a kind of pump group that rotary part is exposed, does not need to carry out specially treated to the bearing or pedestal of pump group, facilitate operation and section
About measurement cost can provide the number for being used to measure pump group revolving speed and lift of hardware supported for the subsequent measurement data that is calculated
According to acquisition device.Technical solution is as follows:
It is a kind of for measuring the data acquisition device of pump group revolving speed and lift, including the quenched electricity of 3-axis acceleration device, signal
Road and data collecting card；3-axis acceleration device is installed on inside pump shell close to unit fixed on water pump suction side, is believed the vibration of water pump
Number electric signal is sampled and be converted to, then is transferred to the quenched circuit of signal；The quenched circuit of signal includes amplifying circuit and filtering
Circuit, amplifying circuit amplify processing to the electric signal from 3-axis acceleration device, and filter circuit is to amplified electric signal
It is filtered and is transferred to data collecting card after anti-aliasing processing, data collecting card transmits a signal to spectrum analyzer progress again
Spectrum analysis, spectrum analyzer export high-frequency signal and handle to sampling processing and frequency processing device, so that subsequent calculate turns
Speed and lift data use.
Further, the 3-axis acceleration device is small-sized triaxial acceleration transducer HAAM-313B or BZ1185 piezoelectricity
Acceleration transducer.
Further, the data collecting card is PCI8210 data collecting card.
The beneficial effects of the utility model are: the utility model is sensed by installing 3-axis acceleration in the outlet port of pump
Device, collects vibration signal when pump group work, and effect is the vibration frequency of unit when picking up pump group work, the vibration that will be collected into
Dynamic signal is converted to a certain range of voltage signal after the processing of the conditioning circuit of filter and amplification, is transmitted further to data acquisition
Card, for calculating pump group revolving speed and lift data offer hardware supported subsequently through existing method；Suitable for various types of pumps
Group, the exposed a kind of pump group of especially no rotary part；It does not need to carry out specially treated to the bearing or pedestal of pump group, it is convenient
Operation and saving measurement cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of corresponding intrument.
Fig. 2 is corresponding signal processor flow chart.
In figure: 1. unit fixed on water pump suction；2. 3-axis acceleration device；3. pump shell；4. bolt；5. exit of pump；6. water pump base
Seat.
Specific embodiment
The utility model is described in further details in the following with reference to the drawings and specific embodiments.As shown, a kind of use
In the data acquisition device of measurement pump group revolving speed and lift, including the quenched circuit of 3-axis acceleration device 2, signal and data acquisition
Card；3-axis acceleration device 2 is installed on 3 inside of pump shell close to 1 side of unit fixed on water pump suction, samples to the vibration signal of water pump
And be converted to electric signal.As shown in Fig. 2, 3-axis acceleration device 2 is by electric signal transmission to the quenched circuit of signal；The quenched circuit of signal
Including amplifying circuit and filter circuit, amplifying circuit amplifies processing, filtered electrical to the electric signal from 3-axis acceleration device 2
Road is filtered amplified electric signal and is transferred to data collecting card after anti-aliasing processing, and data collecting card again passes signal
It is defeated by spectrum analyzer and carries out spectrum analysis, spectrum analyzer exports high-frequency signal at sampling processing and frequency processing device
Reason, so that subsequent calculating revolving speed and lift data use.
The 3-axis acceleration device 2 of the present embodiment uses small-sized triaxial acceleration transducer HAAM-313B or BZ1185 piezoelectricity
Acceleration transducer.Small-sized triaxial acceleration transducer HAAM-313B can realize low-voltage power supply, high-sensitivity measurement, realize dynamic
The measurement of state, static acceleration.Characteristic: 1) range: -2 ~ 2G；2) supply voltage: 2.5 ~ 5.25VDC；3) work temperature
Degree: -25 ~ 75 DEG C；4) inclination angle: -90 ~ 90；5) impact resistance degree: 5000G；6) output signal: 400mV/G；7) ruler
It is very little: 5.6*5.6*1.4mm.The sensor is the output of 4 ~ 20mA of two-wire system normalized current, it and charge output type piezoelectricity accelerate to pass
Sensor reduces millions of times compared to its output impedance, and anti-interference ability greatly enhances；In addition, the sensor and multiple-way system voltage
Output type sensor will not have any influence to signal with the variation of the environmental factors such as temperature compared to cable resistance, connection resistance.
Due to the output of small-sized triaxial acceleration transducer HAAM-313B and BZ1185 piezoelectric acceleration sensor be 4 ~
20mA current signal fails to reach the minimum amplitude that the waveform of LabVIEW is shown, therefore, the present apparatus is filtered and put equipped with signal
Big circuit.
The quenched circuit of signal is made of filter circuit and amplifying circuit, is mainly carried out to the signal of 3-axis acceleration device preliminary
Current signal, is changed into the voltage signal of standard by processing, and data collecting card is incoming to the signal of the quenched circuit of signal corresponding
In subsequent processing units, the tie of computer and actual signal is constituted.
The present embodiment uses the PCI8210 data collecting card based on pci bus, and maximum sample frequency is 250KS/s, tool
There is precision high, speed is fast, the advantages that programming simply, be not necessarily to external power supply.
In use, 3-axis acceleration device 2 is correctly installed on pump shell 3, when water flow enters water along unit fixed on water pump suction 1
When pump, because water flow flowing will cause the vibration of pump shell 3,3-axis acceleration device 2 is acquired water pump vibration signal.Water pump
It is fixed by bolt, water pump pedestal 6 is supported, and water flow flows through water pump and obtains energy, is flowed out from exit of pump 5.
The signal of water pump is acquired by three axis acceleration sensors, carries out preliminary treatment, signal by the quenched circuit of signal
Quenched circuit includes amplifying circuit and filter circuit, and amplifying circuit amplifies the ultra-weak electronic signal of three axis acceleration sensors,
Convenient for post-processing, filter circuit to the signal of amplifying circuit be filtered with anti-aliasing processing, thus by the electricity of more standard
Stream signal is input in data collecting card.Resulting electric signal is passed in spectrum analyzer by data collecting card, then frequency spectrum
Analyzer is again handled the low frequency part of signal, exports most high frequency section, then LabVIEW is according to built-in program to institute
Signal carry out fine processing, by signal Time Domain Processing, signal frequency domain analysis and signal filtering and transmitting handle, finally by
The vibration signal of pump group obtains corresponding revolving speed and lift data, shows using revolving speed and lift is shown, with this
To realize the measurement to pump group revolving speed and lift.
LabVIEW software program includes the acquisition and display of data, and the module is mainly by sensor and conditioning circuit institute
The voltage signal of generation is acquired, and corresponding waveform diagram is shown on interface in certain form, and then program is from selection
Physical channel starts, and sets the acquisition that the sample rate centainly sampled and frequency carry out voltage pulse signal to the channel, simultaneously also
Consider through low-pass filter except radio-frequency component, is shown finally, on the one hand the result data of acquisition to be passed through to display control；Separately
On the one hand Fast Fourier Transform (FFT) is carried out in LabVIEW software to the signal of acquisition, since low frequency, according to harmonic component
Frequency is the integral multiple of fundamental frequency, and there are the blade integral multiple that the frequency of a harmonic component is fundamental frequency, determines that fundamental frequency is
Turn frequency, to obtain the actual speed of water outlet pump.
Claims (3)
1. a kind of for measuring the data acquisition device of pump group revolving speed and lift, which is characterized in that including 3-axis acceleration device
(2), the quenched circuit of signal and data collecting card；It is internal close to unit fixed on water pump suction that 3-axis acceleration device (2) is installed on pump shell (3)
(1) side is sampled to the vibration signal of water pump and is converted to electric signal, then is transferred to the quenched circuit of signal；Signal is quenched
Circuit includes amplifying circuit and filter circuit, and amplifying circuit amplifies processing to the electric signal from 3-axis acceleration device (2),
Filter circuit is filtered amplified electric signal and is transferred to data collecting card after anti-aliasing processing, and data collecting card again will
Signal is transferred to spectrum analyzer and carries out spectrum analysis, and spectrum analyzer exports high-frequency signal and fills to sampling processing and frequency processing
Processing is set, so that subsequent calculating revolving speed and lift data use.
2. according to claim 1 for measuring the data acquisition device of pump group revolving speed and lift, which is characterized in that described
3-axis acceleration device (2) is small-sized triaxial acceleration transducer HAAM-313B or BZ1185 piezoelectric acceleration sensor.
3. according to claim 1 for measuring the data acquisition device of pump group revolving speed and lift, which is characterized in that described
Data collecting card is PCI8210 data collecting card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820909813.6U CN208456836U (en) | 2018-06-13 | 2018-06-13 | It is a kind of for measuring the data acquisition device of pump group revolving speed and lift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820909813.6U CN208456836U (en) | 2018-06-13 | 2018-06-13 | It is a kind of for measuring the data acquisition device of pump group revolving speed and lift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208456836U true CN208456836U (en) | 2019-02-01 |
Family
ID=65160816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820909813.6U Expired - Fee Related CN208456836U (en) | 2018-06-13 | 2018-06-13 | It is a kind of for measuring the data acquisition device of pump group revolving speed and lift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208456836U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884332A (en) * | 2019-04-01 | 2019-06-14 | 南京市计量监督检测院 | A kind of centrifuge speed measuring system |
-
2018
- 2018-06-13 CN CN201820909813.6U patent/CN208456836U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884332A (en) * | 2019-04-01 | 2019-06-14 | 南京市计量监督检测院 | A kind of centrifuge speed measuring system |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190201 Termination date: 20210613 |