CN202281631U - Fluidic gas meter - Google Patents
Fluidic gas meter Download PDFInfo
- Publication number
- CN202281631U CN202281631U CN2011204252925U CN201120425292U CN202281631U CN 202281631 U CN202281631 U CN 202281631U CN 2011204252925 U CN2011204252925 U CN 2011204252925U CN 201120425292 U CN201120425292 U CN 201120425292U CN 202281631 U CN202281631 U CN 202281631U
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- microprocessor
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- fuel gas
- temperature
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Abstract
The utility model discloses a fluidic gas meter. The fluidic gas meter comprises a housing, wherein a base is arranged in the housing; the lower end of the base is connected with a fuel gas channel; a plurality of audio chips are arranged on the base and connected with a piezoelectric buzzer; the piezoelectric buzzer is connected with a wiring terminal; the wiring terminal is connected with a frequency signal processing module; an audio processing circuit is connected with a microprocessor for processing the information of fuel gas; the microprocessor is connected with an information storage module storing calibration parameters and the fuel gas information; a temperature collection module is arranged in the housing and connected with the microprocessor; and the microprocessor compensates fuel gas data according to the fuel gas temperature measured by the temperature collection module. In the utility model, the temperature collection module is arranged on an original audio gas meter, the temperature of fuel gas in the meter is measured by a temperature sensor, and the actual gas flow is converted into gas flow under the standard condition through the gas flow compensation equation, so as to compensate the flow data of fuel gas, and enable the fuel gas to be measured more accurately.
Description
Technical field
The utility model relates to a kind of gas meter, flow meter.
Background technology
Gas meter, flow meter is a kind of metering device that is used for the metering gas use amount.Existing gas meter, flow meter mostly is the metering of carrying out combustion gas through mechanical counter spare, possibly precision can descend after having grown service time.Also have some to adopt ultrasonic element to carry out the combustion gas counting, i.e. ultrasonic wave gas meter, but this gas meter, flow meter need be installed ultrasonic sensor, and cost is higher.Application number is that 201120115537.4 utility model discloses a kind of audio frequency gas meter, flow meter (also being the jet flow gas combustion table), and this table volume is little, in light weight, with low cost, easy for installation.But because the gas meter, flow meter internal environment is complicated, its measuring accuracy is still waiting further raising.
The utility model content
The purpose of the utility model provide a kind of cost lower, the metering accurate jet flow gas combustion table.
The technological means of dealing with problems: a kind of jet flow gas combustion table, comprise shell, be provided with base in the shell; The base lower end connects blast tube, and base is provided with multi-disc audio frequency sheet, and the audio frequency sheet connects piezoelectricity singing piece; Piezoelectricity singing piece connects binding post; Binding post connects the frequency signal processing module, and the microprocessor of audio frequency processing circuit connection processing combustion gas information, microprocessor are connected with the information storage module of storage calibration parameter and combustion gas information; Microprocessor also is connected with the LCD MODULE that shows combustion gas information; Be provided with temperature collect module in the said shell, temperature collect module connects microprocessor, and microprocessor compensates the combustion gas data according to the fuel gas temperature that temperature collect module records.
Described frequency signal processing module comprises signal amplification circuit, signal filter circuit and signal transformation circuit.The current signal of piezoelectricity singing piece output is fainter, must amplify and filtering interference signals through amplifying circuit, and the square-wave pulse signal that is shaped to rule then supplies microprocessor analysis.The frequency of square-wave pulse signal is identical with the frequency of audio frequency vibration, thereby also forms linear relationship with gas flow.
Said microprocessor is connected with the RS485 communication module of gas meter, flow meter and PERCOM peripheral communication.Adopt the RS485 communication to accomplish the information interaction of audio frequency table and calibration platform.
Said microprocessor is connected with the voltage detection module that detects supply voltage.
Said microprocessor is connected with setting table tool mode of operation and checks the key-press module of parameter.
Said microprocessor is connected with reseting module.
The gas meter, flow meter of the utility model is provided with temperature collect module on the basis of original audio frequency gas meter, flow meter; Utilize temperature sensor to record the temperature of combustion gas in the table; And carry out the actual gas flow rate conversion is the gas flow under the mark condition state through gas flow compensation equation; Thereby the data on flows to combustion gas compensates, and makes the metering of combustion gas more accurate.
Description of drawings
Fig. 1 is the cross-sectional view of the utility model.
Fig. 2 is that the A of Fig. 1 is to synoptic diagram.
Fig. 3 is the theory diagram of the utility model.
Embodiment
Like Fig. 1,2,3, a kind of jet flow gas combustion table comprises shell 1; Be provided with base 2 in the shell 1, base 2 lower ends connect blast tube 3, and base 2 is provided with multi-disc audio frequency sheet 4; Audio frequency sheet 4 connects piezoelectricity singing piece 5, and piezoelectricity singing piece 5 connects binding post 6, and binding post 6 connects frequency signal processing module 8; The microprocessor of audio frequency processing circuit connection processing combustion gas information, microprocessor are connected with the information storage module of storage calibration parameter and combustion gas information, and microprocessor also is connected with the LCD MODULE that shows combustion gas information; Binding post 6 is fixed on the seat of honour 7, and the seat of honour 7 is fixing with base 2.Be provided with temperature collect module in the shell, temperature collect module connects microprocessor, and microprocessor compensates the combustion gas data according to the fuel gas temperature that temperature collect module records.
Piezo connects the frequency signal processing module; The microprocessor of audio frequency processing circuit connection processing combustion gas information; Microprocessor is connected with the information storage module of storage calibration parameter and combustion gas information, and microprocessor also is connected with the LCD MODULE that shows combustion gas information.
The frequency signal processing module comprises signal amplification circuit, signal filter circuit and signal transformation circuit.The current signal of piezoelectricity singing piece output is fainter, must amplify and filtering interference signals through amplifying circuit, and the square-wave pulse signal that is shaped to rule then supplies microprocessor analysis.The frequency of square-wave pulse signal is identical with the frequency of audio frequency vibration, thereby also forms linear relationship with gas flow.
Said microprocessor is connected with the RS485 communication module of gas meter, flow meter and PERCOM peripheral communication.Adopt the RS485 communication to accomplish the information interaction of audio frequency table and calibration platform.
Said microprocessor is connected with the voltage detection module that detects supply voltage, just reports to the police when the supply voltage that detects microprocessor when voltage detection module is lower than WV.
Said microprocessor is connected with setting table tool mode of operation and checks the key-press module of parameter, can set gas meter, flow meter different working pattern through button, and the various combustion gas information of checking gas meter, flow meter.
Said microprocessor is connected with reseting module, when the fault on the program appears in gas meter, flow meter, presses reseting module microprocessor is resetted.
The gas meter, flow meter of the utility model utilizes multi-disc audio frequency sheet 4 to be stacked and forms specific airstream compartment; Out-of-date when air communication, can in physical construction, form audio frequency vibration, the size of vibration frequency is linear with the gas flow that flows through the audio frequency sheet; Audio frequency vibration produces electric signal through piezo 5; Pass to through binding post 6 and to carry out signal Processing on the master control borad, 5 of piezoelectric buzzings itself are piezoelectric ceramic bodies, in the effect that receives external force deformation can take place; Its inner meeting produces polarization phenomena, on its two apparent surfaces, occurs positive and negative opposite electric charge simultaneously.After external force is removed; It can return to uncharged state again; Therefore audio frequency vibration can cause the variation of 5 liang of polygonal voltages of piezo; The change frequency of voltage is identical with the frequency of audio frequency vibration, and the electric impulse signal that so just becomes processing module to discern the audio frequency vibration conversion of signals is input to electric impulse signal in the microprocessor and handles the metrical information that obtains combustion gas.
Temperature collect module is set in the shell gathers the temperature of combustion gas in the gas meter, flow meter, microprocessor compensates and corrects the gas flow data according to the temperature of gathering in real time, and its compensation principle does
(Vn is the flow after the actual compensation, and Vg is the preceding flow of compensation; Tn=273.15+20 wherein; Tg=273.15+T, T are the celsius temperature scale that temperature sensor measurement obtains)
The temperature of table tool measurement gas is at-20 ℃～40 ℃, and the precision of thermometric directly determines the precision that compensates, and therefore selecting the high digital temperature sensor temperature-measuring range of relative accuracy for use is-55 ℃～125 ℃.
Compensation under the normal quantitative model has dual mode:
1) every accumulative total 0.01m3 (10L) start-up temperature collection is calculated penalty coefficient, the adjustment integrated flow.
2) each metering finishes the start-up temperature collection, calculates penalty coefficient, the adjustment integrated flow.In use, two kinds of compensation ways have, and when the user surpasses 0.01m3 (10L) with gas continuously, just trigger single compensation, trigger single compensation with depressed bundle.
Claims (6)
1. a jet flow gas combustion table comprises shell, is provided with base in the shell; The base lower end connects blast tube, and base is provided with multi-disc audio frequency sheet, and the audio frequency sheet connects piezoelectricity singing piece; Piezoelectricity singing piece connects binding post, and binding post connects frequency signal processing module, the microprocessor of audio frequency processing circuit connection processing combustion gas information; Microprocessor is connected with the information storage module of storage calibration parameter and combustion gas information; Microprocessor also is connected with the LCD MODULE that shows combustion gas information, it is characterized in that, is provided with temperature collect module in the said shell; Temperature collect module connects microprocessor, and microprocessor compensates the combustion gas data according to the fuel gas temperature that temperature collect module records.
2. a kind of jet flow gas combustion table according to claim 1 is characterized in that described frequency signal processing module comprises signal amplification circuit, signal filter circuit and signal transformation circuit.
3. a kind of jet flow gas combustion table according to claim 1 is characterized in that said microprocessor is connected with the RS485 communication module of gas meter, flow meter and PERCOM peripheral communication.
4. a kind of jet flow gas combustion table according to claim 1 is characterized in that, said microprocessor is connected with the voltage detection module that detects supply voltage.
5. a kind of jet flow gas combustion table according to claim 1 is characterized in that, said microprocessor is connected with setting table tool mode of operation and checks the key-press module of parameter.
6. a kind of jet flow gas combustion table according to claim 1 is characterized in that said microprocessor is connected with reseting module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204252925U CN202281631U (en) | 2011-11-01 | 2011-11-01 | Fluidic gas meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204252925U CN202281631U (en) | 2011-11-01 | 2011-11-01 | Fluidic gas meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202281631U true CN202281631U (en) | 2012-06-20 |
Family
ID=46227797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204252925U Expired - Fee Related CN202281631U (en) | 2011-11-01 | 2011-11-01 | Fluidic gas meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202281631U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104501885A (en) * | 2014-12-23 | 2015-04-08 | 中国计量学院 | Jet principle-based high-precision low-power consumption natural gas flow measuring method and device |
| US9970793B2 (en) | 2013-12-17 | 2018-05-15 | Shanghai Universoon Autoparts Co., Ltd. | Self-rotating flowmeter having a rotating mechanism including a hollow shaft and a disk having internal flow passages |
| CN109696213A (en) * | 2018-11-27 | 2019-04-30 | 西人马(西安)测控科技有限公司 | A kind of domestic gas meter |
-
2011
- 2011-11-01 CN CN2011204252925U patent/CN202281631U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9970793B2 (en) | 2013-12-17 | 2018-05-15 | Shanghai Universoon Autoparts Co., Ltd. | Self-rotating flowmeter having a rotating mechanism including a hollow shaft and a disk having internal flow passages |
| CN104501885A (en) * | 2014-12-23 | 2015-04-08 | 中国计量学院 | Jet principle-based high-precision low-power consumption natural gas flow measuring method and device |
| CN104501885B (en) * | 2014-12-23 | 2018-12-25 | 中国计量学院 | High-precision low-power consumption natural gas flow measuring method and device based on jet current principle |
| CN109696213A (en) * | 2018-11-27 | 2019-04-30 | 西人马(西安)测控科技有限公司 | A kind of domestic gas meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20120620 Termination date: 20181101 |