CN112611437B - Pulse data merging system and method - Google Patents
Pulse data merging system and method Download PDFInfo
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- CN112611437B CN112611437B CN202011578879.XA CN202011578879A CN112611437B CN 112611437 B CN112611437 B CN 112611437B CN 202011578879 A CN202011578879 A CN 202011578879A CN 112611437 B CN112611437 B CN 112611437B
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000012545 processing Methods 0.000 claims abstract description 11
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 238000004364 calculation method Methods 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 claims description 3
- 238000012795 verification Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003867 tiredness Effects 0.000 description 1
- 208000016255 tiredness Diseases 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
- G01F25/15—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters specially adapted for gas meters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention provides a pulse data merging system and a pulse data merging method, comprising an acquisition system, a data processing unit, a pulse output control unit and at least two standard meter channels; the standard meter channel comprises a control valve, a flowmeter, a pressure transmitter and a temperature transmitter; the acquisition system respectively acquires data such as working condition flow, working condition temperature and working condition temperature of each path, accurately calculates standard condition flow, unifies the flow of different channels to one atmosphere pressure and gas flow at 20 ℃ to ensure the metering accuracy of the metering device, avoid the generation of metering errors caused by the inconsistency of the temperature and the pressure of different channels, and output pulse signals with corresponding frequencies through the pulse output control unit.
Description
Technical Field
The invention relates to the field of flowmeter measurement, in particular to a pulse data merging system and method.
Background
In flowmeter metering verification, a verification device can only receive one path of pulse data as flow output data of a detected flowmeter, but in an actual verification process, pulse data in a plurality of parallel branches are required to be collected simultaneously, data collection cannot be carried out on metering devices for parallel metering of a plurality of flowmeters at the same time, so that data can only be collected sequentially and independently, collection calculation is carried out, and time and labor are wasted.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a pulse data merging system and a pulse data merging method.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a pulse data merging system comprises an acquisition system, a data processing unit, a pulse output control unit and at least two standard meter channels; the standard meter channel comprises a control valve, a flowmeter, a pressure transmitter and a temperature transmitter.
The acquisition system respectively acquires data such as working condition flow, working condition temperature and working condition temperature of each path, calculates standard condition flow in real time, unifies the flow of different channels to one atmosphere pressure and gas flow at 20 ℃ to ensure the metering accuracy of the metering device, avoid the generation of metering errors caused by the inconsistency of the temperature and the pressure of different channels, and output pulse signals with corresponding frequencies through the pulse output control unit.
Further, the standard meter channels open the control valve, the output flow generates pulse signals, the working condition pressure acquired by the pressure transmitter and the working condition temperature acquired by the temperature transmitter are recorded, and the pressure value and the temperature value in each standard meter channel are detected independently.
Furthermore, the acquisition system acquires the pulse frequency generated by the pulse signal, acquires the working condition temperature and the working condition pressure of the standard meter channels, and sends the working condition temperature and the working condition pressure to the data processing unit, and the acquisition system uniformly acquires the detection data acquired by each standard meter channel and sends the detection data to the data processing unit for calculation.
Further, the data processing unit acquires pulse frequency, working condition pressure and working condition temperature, processes data, outputs total pulse frequency data, sends the total pulse frequency data to the pulse output control unit, and performs data calculation according to a set method.
Further, the pulse output control unit obtains the total pulse frequency data and externally outputs a pulse signal according to the total pulse frequency.
A method of pulse data merging comprising the steps of:
step 1: starting control valves of 1, … (n-1) and n standard meter channels, wherein n is more than or equal to 2, obtaining 1, … (n-1), and the pulse frequency of the n standard meter channels passing through the flow is F in sequence 1 …F n The method comprises the steps of carrying out a first treatment on the surface of the 1, … (n-1), the working condition temperatures of the n standard meter channels when the n standard meter channels pass through the flow are T in sequence f1 …T fn Operating pressure P f1 …P fn 。
Step 2: reading pulse coefficients K of standard flow meters in 1, … (n-1) and n standard meter channels 1 …K n 。
Step 3: calculating working condition flow Q in standard meter channel fn =3600*F n /K fn 。
Step 4: calculating working condition temperatures of 1, … (n-1) and n standard meter channels in sequence to be T when the atmospheric pressure is calculated and the temperature is 20 DEG C b1 …T bn Operating pressure P b1 …P bn 。
Step 5: respectively calculating working condition compression factors Z under the current temperature and the current pressure of the current flow gas in the n standard meter channels 1 and … (n-1) f1 …Z fn And a time scale compression factor Z at 20 degrees Celsius at atmospheric pressure b1 …Z bn 。
Step 6: acquiring standard condition flow Q in standard meter channel bn =（Z bn *P fn *T bn ）*Q fn /（Z fn *P bn *T fn ) And combining the total standard flow when the standard flow is accumulated in 1, … (n-1), n standard table channels: q (Q) total =Q b1 +…+Q bn 。
Step 7: setting 1, … (n-1), merging pulse coefficient K when standard condition flow is accumulated in n standard table channels total Calculating the combined pulse frequency required to be output as F total =Q total *K total /3600。
Step 8: the frequency of the external output pulse is F total An electrical pulse signal.
The method unifies the flow of different channels to one atmosphere, ensures the metering accuracy of the metering device when the gas flow is at 20 ℃, sets the pulse coefficient when accumulating, and outputs an electric pulse signal to the outside.
Compared with the prior art, the invention has the beneficial effects that: the acquisition system respectively acquires data such as working condition flow, working condition temperature and working condition temperature of each path, calculates standard condition flow in real time, unifies the flow of different channels to one atmosphere pressure and gas flow at 20 ℃ to ensure the metering accuracy of the metering device, avoid the generation of metering errors caused by the inconsistency of the temperature and the pressure of different channels, and output pulse signals with corresponding frequencies through the pulse output control unit.
Drawings
FIG. 1 is a schematic diagram of the connection of embodiment 1 of the present invention;
fig. 2 is a flow chart of the method of embodiment 2 of the present invention.
Detailed Description
For a further understanding of the objects, construction, features, and functions of the invention, reference should be made to the following detailed description of the preferred embodiments.
Embodiment 1, as shown in fig. 1, a pulse data merging system includes an acquisition system, a data processing unit, a pulse output control unit, and at least two standard meter channels; the standard meter channel comprises a control valve, a flowmeter, a pressure transmitter and a temperature transmitter.
The standard meter channel opens the control valve, the output flow generates a pulse signal, and the working condition pressure acquired by the pressure transmitter and the working condition temperature acquired by the temperature transmitter are recorded.
The working condition is data obtained in real time or data calculated according to the real-time data, and the standard condition is data obtained at 20 ℃ under one atmosphere or data calculated according to the atmospheric pressure.
The acquisition system acquires the pulse frequency generated by the pulse signal, acquires the working condition temperature and the working condition pressure of the standard meter channel, and sends the working condition temperature and the working condition pressure to the data processing unit.
The data processing unit acquires pulse frequency, working condition pressure and working condition temperature, processes data, outputs total pulse frequency data and sends the total pulse frequency data to the pulse output control unit.
The pulse output control unit acquires total pulse frequency data and externally outputs pulse signals according to the total pulse frequency.
According to the pulse signal output by the pulse output control unit, the existing verification device can calculate the flow value according to the signal, compare the calculated result with the measured result, and calculate the error value of the metering device.
Embodiment 2, as shown in fig. 2, a pulse data merging method includes the following steps:
s1: opening valves of 1, … (n-1), n standard meter channels, wherein n is more than or equal to 2, obtaining 1, … (n-1), and the pulse frequency of the n standard meter channels passing through the flow is F in sequence 1 …F n The method comprises the steps of carrying out a first treatment on the surface of the 1, … (n-1), n standardsWorking condition temperature is T when the meter channel passes through flow f1 …T fn Operating pressure P f1 …P fn 。
S2: reading pulse coefficients K of standard flow meters in 1, … (n-1) and n standard meter channels 1 …K n 。
S3: calculating working condition flow Q in standard meter channel fn =3600*F n /K fn 。
S4: calculating working condition temperatures of 1, … (n-1) and n standard meter channels in sequence to be T when the atmospheric pressure is calculated and the temperature is 20 DEG C b1 …T bn Operating pressure P b1 …P bn 。
S5: respectively calculating working condition compression factors Z under the current temperature and the current pressure of the current flow gas in the n standard meter channels 1 and … (n-1) f1 …Z fn And a time scale compression factor Z at 20 degrees Celsius at atmospheric pressure b1 …Z bn 。
S6: acquiring standard condition flow Q in standard meter channel bn =（Z bn *P fn *T bn ）*Q fn /（Z fn *P bn *T fn ) And combining the total standard flow when the standard flow is accumulated in 1, … (n-1), n standard table channels: q (Q) total =Q b1 +…+Q bn 。
S7: setting 1, … (n-1), merging pulse coefficient K when standard condition flow is accumulated in n standard table channels total Calculating the combined pulse frequency required to be output as F total =Q total *K total /3600。
Step 8: the frequency of the external output pulse is F total An electrical pulse signal.
The algorithm of the compression factor in the step 5 is calculated according to the AGA No.8 standard according to the pressure and the gas components, and the calculation mode is the prior art and is not in the range of the discussion of the present application, and excessive tiredness is not carried out.
According to the set combined pulse coefficient K total， The frequency of the external output pulse is F total Electric pulse signal, using formula Q total =3600*F total /K total Calculating the flow rate when accumulating, wherein K is set total The flow rate can be counteracted in calculation, and the error value of the metering device can be judged according to the calculated flow rate in accumulation.
The invention has been described with respect to the above-described embodiments, however, the above-described embodiments are merely examples of practicing the invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (6)
1. A method for merging pulse data, characterized in that: comprising a pulse data combining system, the pulse data combining system comprising: the system comprises an acquisition system, a data processing unit, a pulse output control unit and at least two standard meter channels; the standard meter channel comprises a control valve, a flowmeter, a pressure transmitter and a temperature transmitter;
the method specifically comprises the following steps:
step 1: opening valves of 1, … (n-1), n standard meter channels, wherein n is more than or equal to 2, obtaining 1, … (n-1), and the pulse frequency of the n standard meter channels passing through the flow is F in sequence 1 …F n The method comprises the steps of carrying out a first treatment on the surface of the 1, … (n-1), the working condition temperatures of the n standard meter channels when the n standard meter channels pass through the flow are T in sequence f1 … Tfn, working pressure P f1 …P fn ；
Step 2: reading pulse coefficients K of standard flow meters in 1, … (n-1) and n standard meter channels 1 …K n ；
Step 3: calculating working condition flow Q in standard meter channel fn ＝3600*F n /K fn ；
Step 4: calculating working condition temperatures of 1, … (n-1) and n standard meter channels in sequence to be T when the atmospheric pressure is calculated and the temperature is 20 DEG C b1 …T bn Operating pressure Pb1 …P bn ；
Step 5: respectively calculating working condition compression factors Z under the current temperature and the current pressure of the current flow gas in the n standard meter channels 1 and … (n-1) f1 …Z fn And oneAtmospheric pressure, 20 ℃ time scale compression factor Z b1 …Z bn ；
Step 6: acquiring standard condition flow Q in standard meter channel bn ＝(Z bn *P fn *T bn )*Q fn /(Z fn *P bn *T fn ) And combining the total standard flow when the standard flow is accumulated in 1, … (n-1), n standard table channels: q (Q) total ＝Q b1 +…+Q bn ；
Step 7: setting 1, … (n-1), merging pulse coefficient K when standard condition flow is accumulated in n standard table channels total Calculating the combined pulse frequency required to be output as F total ＝Q total *K total /3600；
Step 8: the frequency of the external output pulse is F total The electric pulse signal, the calibrating device receives a path of combined pulse data, and carries on error judgment;
step 9: according to the set combined pulse coefficient K total And the frequency of the external output pulse is F total Electric pulse signal, using formula Q total ＝3600*F total /K total And calculating the flow rate at the time of accumulation, wherein the set Ktotal can be counteracted at the time of calculation, and judging the error value of the metering device according to the calculated flow rate at the time of accumulation.
2. The pulse data combining method of claim 1, wherein: the compression factor in step 5 is calculated according to AGA No.8 standard based on pressure and gas composition.
3. The pulse data combining method of claim 1, wherein: the standard meter channel opens the control valve, the output flow generates a pulse signal, and the working condition pressure acquired by the pressure transmitter and the working condition temperature acquired by the temperature transmitter are recorded.
4. The pulse data combining method of claim 1, wherein: the acquisition system acquires the pulse frequency generated by the pulse signal, acquires the working condition temperature and the working condition pressure of the standard meter channel, and sends the working condition temperature and the working condition pressure to the data processing unit.
5. The pulse data combining method of claim 1, wherein: the data processing unit acquires pulse frequency, working condition pressure and working condition temperature, processes data, outputs total pulse frequency data and sends the total pulse frequency data to the pulse output control unit.
6. The pulse data combining method of claim 1, wherein: the pulse output control unit acquires total pulse frequency data and externally outputs pulse signals according to the total pulse frequency.
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| CN202547738U (en) * | 2012-03-30 | 2012-11-21 | 宁波埃美柯水表有限公司 | Automatic high-performance flow calibration system |
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| CN207317905U (en) * | 2017-10-30 | 2018-05-04 | 西门子传感器与通讯有限公司 | Flowmeter calibrating installation |
| CN207991654U (en) * | 2018-03-13 | 2018-10-19 | 中国计量大学 | A kind of portable gas table calibrating installation |
| CN210513349U (en) * | 2019-11-14 | 2020-05-12 | 上海释格检测技术有限公司 | Mobile flow calibration device |
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2020
- 2020-12-28 CN CN202011578879.XA patent/CN112611437B/en active Active
Patent Citations (7)
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| CN202547738U (en) * | 2012-03-30 | 2012-11-21 | 宁波埃美柯水表有限公司 | Automatic high-performance flow calibration system |
| CN102840898A (en) * | 2012-09-11 | 2012-12-26 | 北京市燃气集团有限责任公司 | Volume correcting instrument indication error calibration standard device and using method |
| UA107750C2 (en) * | 2013-09-09 | 2015-02-10 | Микола Васильович Кузь | Working standard of gas volume with Liquid Separator |
| CN104061984A (en) * | 2014-06-30 | 2014-09-24 | 东华理工大学 | High-speed gas flow calibration system and calibration method based on laboratory multiple pipelines |
| CN207317905U (en) * | 2017-10-30 | 2018-05-04 | 西门子传感器与通讯有限公司 | Flowmeter calibrating installation |
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