CN201548273U - Ultrasonic gas meter with temperature compensation - Google Patents
Ultrasonic gas meter with temperature compensation Download PDFInfo
- Publication number
- CN201548273U CN201548273U CN2009202001766U CN200920200176U CN201548273U CN 201548273 U CN201548273 U CN 201548273U CN 2009202001766 U CN2009202001766 U CN 2009202001766U CN 200920200176 U CN200920200176 U CN 200920200176U CN 201548273 U CN201548273 U CN 201548273U
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Abstract
The utility model discloses an ultrasonic gas meter with temperature compensation. An ultrasonic detection device is arranged in the gas meter to detect the flow of the gas, and the flow of the gas is displayed on a display module. The temperature variation value which leads to inaccurate measurement is measured by a temperature sensor arranged in the gas meter, the temperature variation value is converted through a temperature compensation conversion formula, and the reality of the gas flow is compensated through the treatments of comparison and correction, so that the gas flow can be accurate.
Description
Technical field
The utility model belongs to the gas meter, flow meter field, particularly a kind of ultrasonic wave gas meter.
Technical background
Gas meter, flow meter is a kind of metering device that uses combustion gas that is used to measure.Common gas meter, flow meter connected mode is that an end connects gas pipeline, and the other end is connected on the kitchen range, and when the user used combustion gas, combustion gas entered kitchen range from gas pipeline through gas meter, flow meter, connecting tube; General diaphragm gas meter is by being arranged on the mechanical type meter in the gas meter, flow meter to the metering of using combustion gas, be that mechanical counter of gear train drive that combustion gas promotes to be arranged on through gas meter, flow meter the time in the gas meter, flow meter is beated, when combustion gas stops to flow, counter also stops to beat, finally be to determine what of gas consumption by the numeral of the demonstration on the counter, but this gas meter, flow meter has following shortcoming: at first be that volume is bigger, it is very inconvenient to take bigger space during installation, secondly this mechanical gas meter, flow meter service time of a specified duration after the precision degradation phenomena can appear, catabiosis can appear in the gear train that is gas meter, flow meter, and measuring accuracy is reduced; Be exactly that some noises appear in mechanical type transmission meeting in addition, influence indoor environment; And along with the temperature variation of gas, the expansion of gas, the flow that causes flowing through gas meter, flow meter is inaccurate.
Summary of the invention
The utility model provides at the problems referred to above that a kind of volume is little, precision is high, the ultrasonic wave gas meter of noiseless band temperature compensation.
The technical solution of the utility model is: a kind of ultrasonic wave gas meter with temperature compensation, comprise the table body, be provided with ultrasonic detection device in the described table body, ultrasonic detection device comprises main control module, data acquisition module, display module, power module and ultrasonic sensor one, ultrasonic sensor two and temperature sensor;
Described ultrasonic sensor one, ultrasonic sensor two all link to each other with data acquisition module, and being separately positioned on the upstream and downstream in pipeline cavity internal combustion air communication path of table body, ultrasonic sensor one, ultrasonic sensor two are respectively applied for to the other side to be launched ultrasonic signal and receives the other side's ultrasonic signal;
Temperature sensor also links to each other with data acquisition module, is used to detect the real time temperature that ultrasonic wave gas meter provides pipeline opening;
Data acquisition module is used to gather the signal that ultrasonic sensor one, ultrasonic sensor two, temperature sensor receive, and converts signal data to digital quantity and passes to main control module;
Display module is connected with main control module, is used to show the flow information and the warning message of gas meter, flow meter;
Main control module is used for data that the deal with data acquisition module sends and the flow that obtains combustion gas, controls the demonstration of display module and the signal output of valve event simultaneously.
As preferably, described main control module also is connected with the calibration module that is used to calibrate gas flow; By calibration module the gas flow that obtains is calibrated and to make the degree of accuracy of gas flow higher.
As preferably, described main control module is connected with the data memory module that is used for storing subscriber information and gas meter, flow meter information parameter.
As preferably, described main control module is connected with and is used for gas meter, flow meter and carries out the infrared communication module that information is transmitted with outside.
As preferably, described main control module is connected with the IC-card module for reading and writing.
As preferably, be provided with the multilayer demarcation strip of horizontal parallel in the pipeline cavity of described table body.
As preferably, described main control module is connected with alarm module.
As preferably, described main control module is connected with the valve driving module, and the valve driving module connects valve; When gas meter, flow meter measures gas flow when unusual, can stop air feed by valve-off.
As preferably, described main control module connects the voltage detection module that is used to detect power module voltage.
As preferably, described main control module connects the super capacitor as standby power supply.
The ultrasonic wave gas meter of band temperature compensation of the present utility model is measured the flow of combustion gas by ultrasonic detection device is set in gas meter, flow meter, and be presented on the display module, the ultrasonic wave gas meter of entire belt temperature compensation mostly is integrated on the circuit board, volume is very small and exquisite, sensor is also very little, so very little that gas meter, flow meter just can be done is just very convenient in the time of installation, just a lot of selections can be arranged in the time of the design pipeline; Owing to be to measure by electronic component all, the situation of precision reduction can not appear making owing to component ageing; Simultaneously owing to there not being physical construction in gas meter, flow meter, to move, so can not produce noise; And ultrasonic sensor can be by constantly sending ultrasonic signal, thereby obtain the instantaneous delivery and the integrated flux of combustion gas; And because the inaccurate variation of measurement that temperature variation causes, then, temperature sensor measures the variation of temperature value in gas meter, flow meter by being set, change by the temperature compensation conversion formula, through comparing the authenticity that correcting process is come compensating flowrate, to reach precisely.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the vertical view of Fig. 1;
Fig. 4 is arranged on synoptic diagram in the pipeline cavity for ultrasonic sensor;
Fig. 5 is the synoptic diagram of temperature sensor in the pipeline cavity
Fig. 6 is the theory diagram of ultrasonic detection device.
Embodiment
Shown in Fig. 1～3, ultrasonic wave gas meter comprises the table body that upper shell 5 and lower house 6 are formed, and forms the pipeline cavity 3 that combustion gas is passed through on the table body, and fire proof motor valve 8 is arranged in the pipeline cavity 3.
As shown in Figure 4, ultrasonic sensor 1, ultrasonic sensor 22 are arranged on the upstream and downstream in breather line cavity 3 internal combustion air communication paths, the ultrasonic sensor 1 of upstream sends the ultrasonic sensor 22 that ultrasound wave is given the downstream, can obtain delivery time T
1Send ultrasound wave by reverse direction from the ultrasonic sensor 22 upstream ultrasonic sensors 1 in downstream then, can obtain delivery time T
2Can obtain the flow velocity U of combustion gas then by the following method:
On swim over to delivery time in downstream:
Swim over to the delivery time of upstream down:
Then gas flow rate U is:
Wherein L is hyperacoustic propagation distance between ultrasonic sensor 1 and the ultrasonic sensor 22,
C is the velocity of propagation in the breather line cavity of ultrasound wave when not having gas flow,
θ is the angle that transmits the ultrasound wave path direction between the flow direction of combustion gas and ultrasonic sensor 1 and the ultrasonic sensor 22.
If the sectional area of breather line is S, the gas flow time is T
Then the flow Q of gas meter, flow meter is: Q=U*S*T.
Because the mobile resistance that be subjected to cavity inner wall of gas in stream is slow near the gas flow rate of chamber wall so flowing velocity is inhomogeneous, and be fast near the gas flow rate of central authorities.And be a mean speed by ultrasound wave conversion by the flow velocity U that formula calculates, unit cross-sectional area S and flow velocity U are multiplied each other can not reflect reality gas flow accurately simply.So in cavity 3, be provided with the demarcation strip 9 of multilayer horizontal parallel; The demarcation strip 9 of multilayer horizontal parallel will be divided into independently multilayer chamber in the cavity 3, when gas-flow is crossed cavity 3, the combustion gas stream is divided into the multilayer of horizontal parallel, pass through from the multilayer independent cavity respectively, make gas mobile in stream be subjected to identical relatively resistance, flowing velocity is even relatively, and then the flow velocity U that obtains can reflect gas flow speed more exactly.
As shown in Figure 5, temperature sensor 4 is arranged in the cavity and links to each other with data acquisition module;
Data acquisition module detects the gas temperature that flows through cavity by temperature sensor 4, passes to main control module with converting numerical information after the information acquisition to;
As shown in Figure 6, ultrasonic sensor 1, ultrasonic sensor 22 all link to each other with data acquisition module,
Data acquisition module is used to gather the signal that ultrasonic sensor 1, ultrasonic sensor 22 receive, and converts signal data to digital quantity and passes to main control module;
Display module is connected with main control module, shows the information of gas meter, flow meter as required; Main displaying contents has: flow information, instantaneous delivery and integrated flow, valve switch state, supply voltage state, gas flow state, and warning message etc.
After ultrasonic sensor 1 and ultrasonic sensor 22 are received the ultrasonic signal that the other side sends respectively, send the data of gathering to main control module by data acquisition module, main control module obtains ultrasonic sensor 1 according to the data that send and transmits the delivery time T that ultrasonic signal arrives ultrasonic sensor 22
1Transmit the delivery time T of ultrasonic signal with ultrasonic sensor two to ultrasonic sensor one
2, obtain the flow Q of combustion gas then by the computing formula of gas flow.Display module adopts LCDs, can comparatively make things convenient for the flow information of dexterous demonstration gas meter, flow meter, comprises instantaneous delivery and integrated flux.
Temperature value in the temperature sensor collection gas meter, flow meter regularly, after measuring data, send the data of gathering to main control module by data acquisition module, the temperature signal that data acquisition module sends is converted to digital value by A/D and sends main control module to, 25 degrees centigrade of definition temperature normal temperature, calculate Δ Q=Q * R * Z * (Δ t+27315)/P by formula, wherein Δ Q is a temperature compensated flow, Q is the actual measured value that above ultrasonic sensor calculated, R is gas law constant (normal temperature and pressure), Z is gas compressive coefficient (normal temperature and pressure), Z is the rated pressure of gas meter, flow meter, Δ t is the difference of the different time temperature value that temperature sensor measures in the gas meter, flow meter, draws the flow value QT=Q ± Δ Q of final band temperature compensation thus.
Correction module is set simultaneously in order to proofread and correct the gas-flow value on the gas meter, flow meter, because when actual flow was measured, several factors all can have influence on measurement result, so be necessary the theory measurement value is proofreaied and correct, updating formula is Q
t=KQ+B, wherein Q
tFor proofreading and correct later flow, the theoretical delivery value of Q for calculating according to formula, K, B are correction parameter, determining of K, B value can be in calibrating table tool, to the different gas flow of the many groups of gas meter, flow meter input, measure many group calculated values, after obtaining organizing the actual value and calculated value of gas flows, can pass through the value of correction parameter K, a B of definite the bests such as least square method or curve fitting method more.
Main control module connects the infrared communication module; When the gas meter, flow meter measurement and calibration, it all is to be undertaken by the infrared communication module that the setting of table number and measuring parameter are set, and promptly gas meter, flow meter is by infrared communication module and external information transmission.
Main control module connects the data storage module, and the data-storing module adopts eeprom memory, is used for various gas meter, flow meter information and user profile such as storing subscriber information data, table number information, measuring parameter information, use information, abnormal alarm information.
Main control module connects alarm module, and when gas meter, flow meter takes place when unusual, or power down or storage tolerance sends buzzer warning sound when not enough, submits to the user to note.
Main control module connects the IC-card module for reading and writing, the IC-card module for reading and writing is used for IC-card and gas meter, flow meter carries out the information transmission, the user can pay the combustion gas expense in advance by gas company, gas company writes the information of paying the fees to IC-card then, the user realizes the break-make of combustion gas by IC-card and gas meter, flow meter message exchange, thereby realizes the pre paid functionality of gas meter, flow meter.
Main control module connects the voltage detection module that is used to detect power module voltage; Voltage detection module detects the voltage of power module, when supply voltage drops to under-voltage value, send under-voltage signal and give main control module, main control module sends alarm command, valve closing order, data storage command and stops the IC-card read write command, and each functional module is according to command execution.
Main control module connects the super capacitor as standby power supply; Behind power supply power-fail, adopt standby super capacitor power supply, be mainly used in the command execution of main control module order issue and each performance element this moment.
Be connected with the valve driving module on main control module, the valve driving module connects valve, and when gas meter, flow meter detected the unusual or power module under-voltage of gas flow, main control module just by valve driving module controls valve closing breather line, stopped air feed; After gas flow and supply voltage recovery normally, main control module is opened breather line with regard to by-pass valve control, recovers air feed.
Claims (10)
1. ultrasonic wave gas meter with temperature compensation, comprise the table body, it is characterized in that, be provided with ultrasonic detection device in the described table body, ultrasonic detection device comprises main control module, data acquisition module, display module, power module and ultrasonic sensor one, ultrasonic sensor two and temperature sensor;
Described ultrasonic sensor one, ultrasonic sensor two all link to each other with data acquisition module, and being separately positioned on the upstream and downstream in pipeline cavity internal combustion air communication path of table body, ultrasonic sensor one, ultrasonic sensor two are respectively applied for to the other side to be launched ultrasonic signal and receives the other side's ultrasonic signal;
Temperature sensor also links to each other with data acquisition module, is used to detect the real time temperature that ultrasonic wave gas meter provides pipeline opening;
Data acquisition module is used to gather the signal that ultrasonic sensor one, ultrasonic sensor two, temperature sensor receive, and converts signal data to digital quantity and passes to main control module;
Display module is connected with main control module, is used to show the flow information and the warning message of gas meter, flow meter;
Main control module is used for data that the deal with data acquisition module sends and the flow that obtains combustion gas, controls the demonstration of display module and the signal output of valve event simultaneously.
2. a kind of ultrasonic wave gas meter with temperature compensation according to claim 1 is characterized in that described main control module also is connected with the calibration module that is used to calibrate gas flow; By calibration module the gas flow that obtains is calibrated and to make the degree of accuracy of gas flow higher.
3. a kind of ultrasonic wave gas meter with temperature compensation according to claim 1 is characterized in that described main control module is connected with the data memory module that is used for storing subscriber information and gas meter, flow meter information parameter.
4. a kind of ultrasonic wave gas meter with temperature compensation according to claim 1 is characterized in that, described main control module is connected with and is used for gas meter, flow meter and outside infrared communication module of carrying out the information transmission.
5. a kind of ultrasonic wave gas meter with temperature compensation according to claim 1 is characterized in that described main control module is connected with the IC-card module for reading and writing.
6. a kind of ultrasonic wave gas meter with temperature compensation according to claim 1 is characterized in that, is provided with the multilayer demarcation strip of horizontal parallel in the pipeline cavity of described table body.
7. a kind of ultrasonic wave gas meter with temperature compensation according to claim 1 is characterized in that described main control module is connected with alarm module.
8. a kind of ultrasonic wave gas meter with temperature compensation according to claim 1 is characterized in that described main control module is connected with the valve driving module, and the valve driving module connects valve; When gas meter, flow meter measures gas flow when unusual, can stop air feed by valve-off.
9. a kind of ultrasonic wave gas meter with temperature compensation according to claim 1 is characterized in that, described main control module connects the voltage detection module that is used to detect power module voltage.
10. a kind of ultrasonic wave gas meter with temperature compensation according to claim 1 is characterized in that, described main control module connects the super capacitor as standby power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202001766U CN201548273U (en) | 2009-11-12 | 2009-11-12 | Ultrasonic gas meter with temperature compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202001766U CN201548273U (en) | 2009-11-12 | 2009-11-12 | Ultrasonic gas meter with temperature compensation |
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| CN201548273U true CN201548273U (en) | 2010-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009202001766U Expired - Lifetime CN201548273U (en) | 2009-11-12 | 2009-11-12 | Ultrasonic gas meter with temperature compensation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928054A (en) * | 2012-10-30 | 2013-02-13 | 重庆前卫克罗姆表业有限责任公司 | Detection device for gas meter with temperature compensation function and detection method of device |
| CN104834252A (en) * | 2015-04-20 | 2015-08-12 | 成都千嘉科技有限公司 | Supersonic gas meter and supersonic gas meter control system |
| CN108132078A (en) * | 2016-11-30 | 2018-06-08 | 辽宁思凯科技股份有限公司 | A kind of ultrasonic wave gas meter based on shunting metering device |
| CN109443470A (en) * | 2019-01-15 | 2019-03-08 | 廊坊新奥燃气设备有限公司 | A kind of Electronic Temperature Offset gas meter, flow meter and its automatic Verification method suitable for automatic Verification |
-
2009
- 2009-11-12 CN CN2009202001766U patent/CN201548273U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928054A (en) * | 2012-10-30 | 2013-02-13 | 重庆前卫克罗姆表业有限责任公司 | Detection device for gas meter with temperature compensation function and detection method of device |
| CN102928054B (en) * | 2012-10-30 | 2014-10-29 | 重庆前卫克罗姆表业有限责任公司 | Detection device for gas meter with temperature compensation function and detection method of device |
| CN104834252A (en) * | 2015-04-20 | 2015-08-12 | 成都千嘉科技有限公司 | Supersonic gas meter and supersonic gas meter control system |
| CN108132078A (en) * | 2016-11-30 | 2018-06-08 | 辽宁思凯科技股份有限公司 | A kind of ultrasonic wave gas meter based on shunting metering device |
| CN109443470A (en) * | 2019-01-15 | 2019-03-08 | 廊坊新奥燃气设备有限公司 | A kind of Electronic Temperature Offset gas meter, flow meter and its automatic Verification method suitable for automatic Verification |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100811 |
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| CX01 | Expiry of patent term |