CN109099997A - A kind of gas flow volume correction instrument automatic detection device - Google Patents
A kind of gas flow volume correction instrument automatic detection device Download PDFInfo
- Publication number
- CN109099997A CN109099997A CN201811093503.2A CN201811093503A CN109099997A CN 109099997 A CN109099997 A CN 109099997A CN 201811093503 A CN201811093503 A CN 201811093503A CN 109099997 A CN109099997 A CN 109099997A
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- China
- Prior art keywords
- volume correction
- correction instrument
- pressure
- gas flow
- detection device
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- 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.)
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Links
- 238000012937 correction Methods 0.000 title claims abstract description 74
- 238000001514 detection method Methods 0.000 title claims abstract description 38
- 239000007789 gas Substances 0.000 claims abstract description 27
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 21
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 13
- 238000004891 communication Methods 0.000 claims abstract description 10
- 239000004744 fabric Substances 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 6
- 239000000567 combustion gas Substances 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000001186 cumulative effect Effects 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 206010069747 Burkholderia mallei infection Diseases 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000010259 detection of temperature stimulus Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- 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
Abstract
The invention discloses a kind of gas flow volume correction instrument automatic detection devices, it is characterized in that, including volume correction instrument, pressure testers, process checking gauge, data acquisition equipment and at least three thermostatic oil baths, the volume correction instrument is equipped with pressure sensor, temperature sensor and flow sensor, the pressure testers are connected through the volume correction instrument pressure interface with the pressure sensor, the thermostatic oil bath is connected through the volume correction instrument temperature interface with the temperature sensor, the process checking gauge is connected through the volume correction instrument traffic channel with the flow sensor, the data acquisition equipment is connected with the volume correction instrument communication interface；The present invention easily realizes that the expansion of pressure test range and pressure spot rapidly adjust automatically using pressure calibration instrument and high-pressure nitrogen bottle；The present invention the time required to heating up and cool down repeatedly when effectively reducing temperature calibrating, improves calibrating efficiency using three thermostatic oil baths are no less than.
Description
Technical field
The present invention relates to fluid metering technical field, in particular to the automatic detection of a kind of gas flow volume correction instrument fills
It sets.
Background technique
Currently, China carries on trade clearing mainly using volume flow to combustion gas, measurement instrument used is mainly intelligence
Gas meter.It by flowmeter base table with combustion gas volume correction instrument is mating forms.Flowmeter base table be usually turbine flowmeter,
Rotz flowmeter etc., (i.e. operating condition is accumulative for the cumulative volume flow of its metering gas (20 DEG C, 101.325kPa) under running conditions
Flow).Volume correction instrument receives the pulse signal and the temperature itself being furnished with, the letter of pressure sensor of flowmeter base table output
Number, the cumulative volume flow (i.e. mark condition integrated flow) under combustion gas standard reference conditions is calculated to realize trade by mathematical model
Metering, and show, store and export.The letter that volume correction instrument exports temperature sensor, pressure sensor and flowmeter base table
Number accurate measurement whether be all directly related to Trade Measures accurate.
Volume correction instrument is all used during most industrial combustion gas meterings on the market, but current China is to combustion gas
Calibrating/calibration object of flowmeter is mainly flowmeter base table, to calibrating/calibration of volume correction instrument mainly using to pressure
The mode that force snesor, temperature sensor and flow signal detect respectively.Specifically, to volume correction instrument pressure sensor pressure
The detection of power part is main in such a way that hand-held pressure pump arranges in pairs or groups digital pressure gauge, and detection process is numerous in the presence of process is suppressed
The problems such as trivial, high pressure is not easy to reach, air-tightness existing defects；The detection of temperature sensor is mainly used dry type measure furnace into
It goes, length, the temperature sensor volume of partial volume correction instrument are larger the time required to there is heating temperature-fall period in detection, Wu Fashen
Enter to be placed in dry type metering furnace to lead to not accurately detect；In addition to this, the reading of pressure, temperature and data on flows is using artificial
The mode of reading, human factor are larger.Therefore it is badly in need of providing a kind of novel gas flow volume correction instrument detection device, it can
Conveniently, accurately volume correction instrument is verified.
Summary of the invention
In view of the above problems in the prior art, the purpose of the present invention is to provide a kind of gas flow volume correction instrument is automatic
Detection device, pressure sensor, temperature sensor and the flow signal of the verification volume correction instrument of energy precise and high efficiency.
To achieve the goals above, the present invention discloses a kind of gas flow volume correction instrument automatic detection device, feature
It is, including volume correction instrument, pressure testers, process checking gauge, data acquisition equipment and at least three thermostatic oil baths, it is described
Volume correction instrument is equipped with pressure sensor, temperature sensor and flow sensor, and the pressure testers are corrected through the volume
Instrument pressure interface is connected with the pressure sensor, and the thermostatic oil bath is through the volume correction instrument temperature interface and the temperature
Degree sensor is connected, and the process checking gauge is connected through the volume correction instrument traffic channel with the flow sensor,
The data acquisition equipment is connected with the volume correction instrument communication interface.
Further, a kind of gas flow volume correction instrument automatic detection device further includes industrial personal computer, the industry control
Machine and the pressure testers are electrically connected, and the industrial personal computer is adjusted for the pressure testers pressure.
Specifically, the pressure testers are furnished with high-pressure nitrogen bottle, and the high-pressure nitrogen bottle is that the pressure testers mention
For clean dry nitrogen as working media.
Preferably, the pressure testers are CPC4000 mesolow tester.
Preferably, the process checking gauge provides flow standard signal, the process checking gauge for the volume correction instrument
For special steady Xie Shi tester.
Further, the data acquisition equipment and the industrial personal computer are electrically connected, and the industrial personal computer can be to the number
It is calculated and is stored according to the data that acquisition equipment collects.
Further, the thermostatic oil bath is furnished with digital thermometer, and the thermostatic oil bath uses profession to use oil as work
Medium, the thermostatic oil bath are equipped with cavity；In temperature checking, the volume correction instrument temperature sensor is placed in the constant temperature
In oil groove cavity, stablize a period of time to acquire data.
Preferably, the thermostatic oil bath temperature setting is within the scope of -10 DEG C~60 DEG C, the temperature of the thermostatic oil bath setting
It is evenly distributed in detection range, the temperature of the thermostatic oil bath setting is kept constant in the detection process.
Further, the industrial personal computer is connected with printer, and the volume correction instrument is also connected with power supply adaptor, described
Printer can export data, and the power supply establishing device is volume correction instrument power supply.
Preferably, the communication interface that the volume correction instrument is connected with the data acquisition equipment is RS232 or RS485
Communication interface.
Due to above-mentioned technical proposal, the invention has the following advantages:
1) gas flow volume correction instrument automatic detection device disclosed by the invention, core component pressure testers use
Clean dry nitrogen is controlled as working media by industrial personal computer, can be realized the automatic quick adjusting of pressure spot, and detect model
It encloses big.
2) gas flow volume correction instrument automatic detection device disclosed by the invention is completed using at least three thermostatic oil baths
Temperature calibrating after required temperature check value is provided with, keeps setting temperature constant in temperature verification process, avoids heating
Waiting time needed for cooling down, improve temperature calibrating efficiency.
3) gas flow volume correction instrument automatic detection device disclosed by the invention, the data acquisition equipment and the body
Product correction instrument uses RS232 or RS485 communication connection, can be accurate high to pressure, temperature and flow detection automatic data collection
Effect, avoiding the error manually acquired influences.
Detailed description of the invention
It, below will be to required in embodiment or description of the prior art in order to illustrate more clearly of technical solution of the present invention
The attached drawing used is briefly described.It should be evident that drawings in the following description are only some embodiments of the invention, it is right
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Its attached drawing.
Fig. 1 is that a kind of structure of gas flow volume correction instrument automatic detection device preferred embodiment provided by the invention is shown
It is intended to；
In figure: 1- volume correction instrument, 2- pressure testers, 21- high-pressure nitrogen bottle, 3- process checking gauge, the acquisition of 4- data
Equipment, 5- thermostatic oil bath, 51- digital thermometer, 6- industrial personal computer, 7- printer, 8- power supply adaptor
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art without making creative work it is obtained it is all its
His embodiment, shall fall within the protection scope of the present invention.
Embodiment 1
As shown in Figure 1, the present embodiment provides a kind of gas flow volume correction instrument automatic detection devices, which is characterized in that
It is described to be checked including volume correction instrument 1, pressure testers 2, process checking gauge 3, data acquisition equipment 4 and three thermostatic oil baths 5
The volume correction instrument 1 of survey is equipped with pressure sensor, temperature sensor and flow sensor, and the pressure testers 2 are through the body
Product 1 pressure interface of correction instrument is connected with the pressure sensor, and the thermostatic oil bath 5 connects through 1 temperature of volume correction instrument
Mouth is connected with the temperature sensor, and the process checking gauge 3 is passed through 1 traffic channel of volume correction instrument and the flow
Sensor is connected, and the data acquisition equipment 4 is connected with 1 communication interface of volume correction instrument.
A kind of gas flow volume correction instrument automatic detection device further includes industrial personal computer 6, the industrial personal computer 6 with it is described
Pressure testers 2 are electrically connected, and the industrial personal computer 2 is adjusted for 2 pressure of pressure testers.
The pressure testers 2 are furnished with high-pressure nitrogen bottle 21, and the high-pressure nitrogen bottle 21 is that the pressure testers 2 provide
The pressure output for being up to 40bar may be implemented as working media in clean dry nitrogen.
Preferably, the pressure testers 2 be CPC4000 mesolow tester, the CPC4000 mesolow tester with
The volume correction instrument 1, the CPC4000 mesolow tester and the high-pressure nitrogen bottle 21 are connected using professional connecting line
It connects, guarantees air-tightness.
Further, the process checking gauge 3 is that the volume correction instrument 1 provides flow standard signal, the process school
Instrument 3 is tested as special steady Xie Shi tester.
The data acquisition equipment 4 is electrically connected with the industrial personal computer 6, and the data acquisition equipment 4 can be to pressure, temperature
Degree and flow signal carry out automatic collection, and the data that the industrial personal computer 6 can acquire the data acquisition equipment 4 calculate
Processing and storage.
The thermostatic oil bath 5 is furnished with digital thermometer 51, and it is oily as working media that the thermostatic oil bath 5 use profession to use,
The thermostatic oil bath 5 is equipped with cavity；During temperature checking, 1 temperature sensor of volume correction instrument is sequentially placed in institute
In the cavity for stating three thermostatic oil baths 5, stablize a period of time to complete the acquisition of temperature data.
Preferably, 5 temperature setting of thermostatic oil bath is within the scope of -10 DEG C~60 DEG C, three thermostatic oil baths, 5 temperature
It is uniformly distributed within the scope of -10 DEG C~60 DEG C when setting, the temperature of three thermostatic oil baths 5 setting is kept in checking procedure
It is constant.
The industrial personal computer 6 is connected with printer 7, and the volume correction instrument 1 is connected with power supply adaptor 8, the printer 7
The data-printing that the industrial personal computer 6 is calculated or stores can be exported, the power supply adaptor 8 gives the volume correction instrument
1 power supply.
Preferably, the communication interface of the volume correction instrument 1 and the data acquisition equipment 4 is that RS232 or RS485 is communicated
Interface.
Using a kind of gas flow volume correction instrument automatic detection device disclosed in the embodiment of the present invention 1, detects pressure and pass
Sensor, temperature sensor and flow signal, in the case where setting measurement point, standard value and measured value can directly read respectively and
It directly acquires, after being calculated automatically from the error of indication, the error of indication is compared with the allowable error set, it is automatic to determine knot
By whether meeting the requirements.
Data are as follows:
The detection of 1 pressure sensor of table
As shown in table 1, multiple and different measurement points are set when pressure test and allowable error range is set, standard value from
CPC4000 mesolow tester is directly read, respectively 1.0023,4.0023,6.0023,8.0023 and 9.9523, and unit is
bar abs.The tested value that data acquisition equipment 4 directly collects is respectively 1.005,4.007,6.010,8.011 and
9.962, unit is bar abs.Industrial personal computer 6 carries out calculation processing to data and obtains the error of indication, and is compared with allowable error
Compared with, it is automatic to determine to obtain the error of indication within the scope of allowable error, therefore conclusion is P (passing through).
The detection of 2 temperature sensor of table
As shown in table 2, multiple and different measurement point temperature are set when temperature detection, respectively -10 DEG C, 20 DEG C and 60 DEG C, and
It is ± 0.50 DEG C that allowable error range, which is arranged, and standard value directly reads to obtain from the digital thermometer 51 that thermostatic oil bath 5 is equipped with, point
It Wei not be -10 DEG C, 20 DEG C and 60 DEG C.It is respectively -9.94 DEG C, 20.07 that the temperature that data acquisition equipment 4 directly collects, which is detected value,
DEG C and 60.04 DEG C.Industrial personal computer 6 carries out calculation processing to data and obtains the error of indication, by the error of indication being calculated and permission
Error is compared, and obtains the error of indication within the scope of allowable error, therefore it is concluded that is P.
The detection of 3 flow signal of table
As shown in table 3, multiple and different measurement points, respectively 0.2,0.4,0.6,0.8 and are set when flow signal detects
1.0, unit Hz, setting allowable error range are ± 0.50Hz.Flow standard values from being obtained by calculation, respectively 69.9,
138.7,208.4,277.2 and 348.7, unit m3/h.Flow volume is detected value and directly acquires from data acquisition equipment 4
It arrives, respectively 69.9,138.7,208.5,277.3 and 348.7, unit m3/h.Indicating value is obtained through 6 calculation processing of industrial personal computer to miss
Difference respectively 0.00,0.00,0.05,0.04 and 0.03 is compared with allowable error, within the scope of allowable error, therefore
It is concluded that being P.
Above description sufficiently discloses a specific embodiment of the invention.It should be pointed out that being familiar with the field
Range of any change that technical staff does a specific embodiment of the invention all without departing from claims of the present invention.
Correspondingly, the scope of the claims of the invention is also not limited only to previous embodiment.
Claims (10)
1. a kind of gas flow volume correction instrument automatic detection device, which is characterized in that including volume correction instrument (1), pressure school
Instrument (2), process checking gauge (3), data acquisition equipment (4) and at least three thermostatic oil baths (5) are tested, inside the volume correction instrument
(1) it is equipped with pressure sensor, temperature sensor and flow sensor, the pressure testers (2) are through the volume correction instrument (1)
Pressure interface is connected with the pressure sensor, and the thermostatic oil bath (5) is through the volume correction instrument (1) temperature interface and institute
It states temperature sensor to be connected, the process checking gauge (3) is through the volume correction instrument (1) traffic channel and the flow sensing
Device is connected, and the data acquisition equipment (4) is connected with the volume correction instrument (1) communication interface.
2. a kind of gas flow volume correction instrument automatic detection device according to claim 1, which is characterized in that described one
Kind gas flow volume correction instrument automatic detection device further includes industrial personal computer (6), the industrial personal computer (6) and the pressure testers
(2) it is electrically connected, the industrial personal computer (2) is adjusted for the pressure testers (2) pressure.
3. a kind of gas flow volume correction instrument automatic detection device according to claim 1, which is characterized in that the pressure
Power tester (2) is furnished with high-pressure nitrogen bottle (21), and the high-pressure nitrogen bottle (21) is that the pressure testers (2) provide pure do
Dry nitrogen is as pressure duty medium.
4. a kind of gas flow volume correction instrument automatic detection device according to claim 1, which is characterized in that the pressure
Power tester (2) is CPC4000 mesolow tester.
5. a kind of gas flow volume correction instrument automatic detection device according to claim 1, which is characterized in that the mistake
Journey tester (3) is used to provide flow standard signal to the volume correction instrument (1), and the process checking gauge (3) is that spy surely takes
Family name's tester.
6. a kind of gas flow volume correction instrument automatic detection device according to claim 1, which is characterized in that the number
It is electrically connected according to acquisition equipment (4) and the industrial personal computer (6), the industrial personal computer (6) can adopt the data acquisition equipment (4)
Collect obtained data to be handled and stored.
7. a kind of gas flow volume correction instrument automatic detection device according to claim 1, which is characterized in that the perseverance
Warm oil groove (5) is furnished with digital thermometer (51), and the thermostatic oil bath (5) uses profession to use oil as working media, the constant temperature
Oil groove (5) is equipped with cavity.
8. a kind of gas flow volume correction instrument automatic detection device according to claim 1, which is characterized in that the perseverance
Warm oil groove (5) temperature setting within the scope of -10 DEG C~60 DEG C, divide in detection range by the temperature of thermostatic oil bath (5) setting
Cloth is uniform, and the temperature of thermostatic oil bath (5) setting is kept constant in the detection process.
9. a kind of gas flow volume correction instrument automatic detection device according to claim 1, which is characterized in that the work
Control machine (6) is connected with printer (7), and the volume correction instrument (1) is also connected with power supply adaptor (8).
10. a kind of gas flow volume correction instrument automatic detection device according to claim 1, which is characterized in that described
Volume correction instrument (1) communication interface is RS232 or RS485 communication interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811093503.2A CN109099997A (en) | 2018-09-19 | 2018-09-19 | A kind of gas flow volume correction instrument automatic detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811093503.2A CN109099997A (en) | 2018-09-19 | 2018-09-19 | A kind of gas flow volume correction instrument automatic detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109099997A true CN109099997A (en) | 2018-12-28 |
Family
ID=64866716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811093503.2A Pending CN109099997A (en) | 2018-09-19 | 2018-09-19 | A kind of gas flow volume correction instrument automatic detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109099997A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110175809A (en) * | 2019-04-18 | 2019-08-27 | 唐山钢铁集团有限责任公司 | Examine and determine record standard management method |
| CN111043631A (en) * | 2019-12-27 | 2020-04-21 | 广州燃气集团有限公司 | Combustion control system, method and device of burner and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980073566A (en) * | 1997-03-17 | 1998-11-05 | 김택상 | Automatic calibration and testing equipment for gas volume compensators |
| CN102607675A (en) * | 2012-03-27 | 2012-07-25 | 山东省计量科学研究院 | Gas meter temperature tester |
| CN202362030U (en) * | 2011-11-24 | 2012-08-01 | 河南新天科技股份有限公司 | Intelligent corrector for gas volume |
| 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 |
| CN207881802U (en) * | 2018-03-02 | 2018-09-18 | 上海功尊仪表有限公司 | A kind of flow volume correction instrument with GPS functions |
| CN209342208U (en) * | 2018-09-19 | 2019-09-03 | 苏州市计量测试院 | A kind of gas flow volume correction instrument automatic detection device |
-
2018
- 2018-09-19 CN CN201811093503.2A patent/CN109099997A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980073566A (en) * | 1997-03-17 | 1998-11-05 | 김택상 | Automatic calibration and testing equipment for gas volume compensators |
| CN202362030U (en) * | 2011-11-24 | 2012-08-01 | 河南新天科技股份有限公司 | Intelligent corrector for gas volume |
| CN102607675A (en) * | 2012-03-27 | 2012-07-25 | 山东省计量科学研究院 | Gas meter temperature tester |
| 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 |
| CN207881802U (en) * | 2018-03-02 | 2018-09-18 | 上海功尊仪表有限公司 | A kind of flow volume correction instrument with GPS functions |
| CN209342208U (en) * | 2018-09-19 | 2019-09-03 | 苏州市计量测试院 | A kind of gas flow volume correction instrument automatic detection device |
Non-Patent Citations (7)
| Title |
|---|
| 刘忠军: ""体积修正仪校准检测系统的开发"", 《仪器仪表用户》, vol. 24, no. 6, pages 51 - 55 * |
| 张涛 等: ""一种分体式燃气体积修正仪校准标准装置"", 《煤气与热力》, vol. 37, no. 9, pages 24 * |
| 张涛 等: "一种分体式燃气体积修正仪校准标准装置", 煤气与热力, vol. 37, no. 9, 30 September 2017 (2017-09-30), pages 24 * |
| 张涛: ""燃气体积修正仪校准方法研究"", 《计量学报》, vol. 36, no. 6, pages 613 - 616 * |
| 李孝评 等: ""欧盟标准体积修正仪技术特点"", 《煤气与热力》, vol. 35, no. 9, pages 27 * |
| 陈平 等: ""EK系列天然气体积修正仪的检定"", 《工业计量》, vol. 23, no. 1, pages 9 - 11 * |
| 陈平 等: "EK系列天然气体积修正仪的检定", 工业计量, vol. 23, no. 1, 21 March 2013 (2013-03-21), pages 9 - 11 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110175809A (en) * | 2019-04-18 | 2019-08-27 | 唐山钢铁集团有限责任公司 | Examine and determine record standard management method |
| CN111043631A (en) * | 2019-12-27 | 2020-04-21 | 广州燃气集团有限公司 | Combustion control system, method and device of burner and storage medium |
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