CN207197639U - A kind of platform for flow verification - Google Patents

A kind of platform for flow verification Download PDF

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Publication number
CN207197639U
CN207197639U CN201721107198.9U CN201721107198U CN207197639U CN 207197639 U CN207197639 U CN 207197639U CN 201721107198 U CN201721107198 U CN 201721107198U CN 207197639 U CN207197639 U CN 207197639U
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CN
China
Prior art keywords
flowmeter
measured
clearing instrument
instrument
platform
Prior art date
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.)
Expired - Fee Related
Application number
CN201721107198.9U
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Chinese (zh)
Inventor
高明
姚广晓
朱明�
薛震宇
程广忠
潘利斌
陶宏斌
宋佳耀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Dazhong Xiangyuan Power Supply Co Ltd
Original Assignee
Shanghai Dazhong Xiangyuan Power Supply Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Dazhong Xiangyuan Power Supply Co Ltd filed Critical Shanghai Dazhong Xiangyuan Power Supply Co Ltd
Priority to CN201721107198.9U priority Critical patent/CN207197639U/en
Application granted granted Critical
Publication of CN207197639U publication Critical patent/CN207197639U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

A kind of platform for flow verification is the utility model is related to, platform includes test pipeline, blower fan, frequency converter, flowmeter to be measured, proving flowmeter, the first clearing instrument, the second clearing instrument and PC;Described flowmeter and proving flowmeter to be measured is connected in series on test pipeline, blower fan is arranged on one end of test pipeline, frequency converter is connected with blower fan, for adjusting fan delivery, the first described clearing instrument is connected with flowmeter to be measured, second clearing instrument is connected with proving flowmeter, and the flow signal of flowmeter and proving flowmeter to be measured is transferred to the first clearing instrument and the second clearing instrument by electric current respectively, and the first clearing instrument and the second clearing instrument are connected with PC.Compared with prior art, the utility model has the advantages that low cost, efficiency high, simple to operate, result precision is high, reproducible.

Description

A kind of platform for flow verification
Technical field
The utility model belongs to flow verification technical field, and in particular to a kind of to be somebody's turn to do for the platform of flow verification and use The flow verification method of platform.
Background technology
The demarcation of flowmeter is mainly according to national regulation in enterprise, periodic verification, is generally in routine work In the case where significant change occurs for flow, verification can be just dismantled, if the increase verification frequency, entreprise cost will increase.For It can preferably ensure the service precision of flowmeter, and not increase the cost of enterprise, build verification platform into most economical Way.
And current verification platform can only measure the flow of a point, it is impossible to reflect the linear problem of flowmeter, easily make The erroneous judgement of paired flowmeter progress, it is therefore desirable to be improved to verification platform.
The content of the invention
The purpose of this utility model is exactly that a kind of cost is low, imitates in order to be provided the defects of overcoming above-mentioned prior art to exist The platform for flow verification that rate is high, simple to operate, result precision is high, reproducible.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of platform for flow verification, including test pipeline, blower fan, frequency converter, flowmeter to be measured, normal flow Meter, the first clearing instrument, the second clearing instrument and PC;Described flowmeter and proving flowmeter to be measured is connected in series in test pipeline On, blower fan is arranged on one end of test pipeline, and frequency converter is connected with blower fan, for adjusting fan delivery, the described first clearing Instrument is connected with flowmeter to be measured, and the second clearing instrument is connected with proving flowmeter, the flow letter of flowmeter and proving flowmeter to be measured Number it is transferred to the first clearing instrument and the second clearing instrument respectively by electric current, the first clearing instrument and the second clearing instrument connect with PC Connect.
Preferably, described flowmeter to be measured is detachably connected with test pipeline, described proving flowmeter and testing tube Road is fixedly connected.
Preferably, described proving flowmeter uses the flowmeter of the high at least one grade of ratio of precision flowmeter to be measured.
Preferably, described proving flowmeter uses the flowmeter of the high grade of ratio of precision flowmeter to be measured.
Preferably, the first described clearing instrument and the second clearing instrument are connected by RS communication interfaces with PC.
Preferably, the air inlet of described blower fan is connected with testing one end of pipeline, described proving flowmeter and to be measured Flowmeter is sequentially arranged along gas flow direction.
Using the flow verification method of described platform, this method uses multiple spot method of comparison, comprised the following steps:
(a) flowmeter to be measured is installed;
(b) frequency converter is adjusted according to a series of frequency values being linearly distributed, the air quantity of blower fan is controlled, in each frequency values Under, after fan delivery is stable, PC counts flowmeter and normal flow to be measured by the first clearing instrument and the second clearing instrument Count the integrated flow within one identical time;
(c) a series of integrated flow of flowmeter to be measured and proving flowmeter under frequency values is contrasted, treats flow measurement gauge Carry out flow verification.
Compared with prior art, the utility model has the advantages that:
(1) as a result of existing pipeline, frequency converter, PC etc., thus the investment of costliness need not be carried out;
(2) it can fast and accurately judge whether flowmeter accuracy to be detected meets the needs of user.
(3) by variable frequency adjustment, can multiple spot compare flow repeatedly, it is ensured that the repeatability of flowmeter to be detected and accurate Property.
(4) it is easy to operate, accurately and reliably.
Brief description of the drawings
Fig. 1 is connection diagram of the present utility model.
In figure, 1 is test pipeline, and 2 be blower fan, and 3 be frequency converter, and 4 be flowmeter to be measured, and 5 be proving flowmeter, and 6 be the One clearing instrument, 7 be the second clearing instrument, and 8 be PC.
Embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
A kind of platform for flow verification, as shown in figure 1, including test pipeline 1, blower fan 2, frequency converter 3, treating measurement of discharge Meter 4, proving flowmeter 5, first settle accounts instrument 6, second and settle accounts instrument 7 and PC 8;Flowmeter 4 and proving flowmeter 5 series connection to be measured connects It is connected on test pipeline 1, blower fan 2 is arranged on one end of test pipeline 1, and frequency converter 3 is connected with blower fan 2, for adjusting the wind of blower fan 2 Amount, the first clearing instrument 6 are connected with flowmeter 4 to be measured, and the second clearing instrument 7 is connected with proving flowmeter 5, flowmeter 4 to be measured and mark The flow signal of quasi- flowmeter 5 is transferred to the first clearing instrument 6 and the second clearing instrument 7 respectively by 4~20mA current signals, and first Clearing instrument 6 and second is settled accounts instrument 7 and is connected by RS485 communication interfaces with PC 8.
In the present embodiment, the air inlet of blower fan 2 is connected with testing one end of pipeline 1, proving flowmeter 5 and flowmeter to be measured 4 are sequentially arranged along gas flow direction.Flowmeter 4 to be measured is detachably connected with test pipeline 1, proving flowmeter 5 and testing tube Road 1 is fixedly connected.Usually, proving flowmeter 5 uses the flowmeter of the high at least one grade of ratio of precision flowmeter 4 to be measured.This In embodiment, proving flowmeter 5 uses the flowmeter of ratio of precision 4 high grades of flowmeter to be measured.
Using the flow verification method of above-mentioned platform, this method uses multiple spot method of comparison, comprised the following steps:
(a) flowmeter 4 to be measured is installed;
(b) frequency converter 3 is adjusted according to a series of frequency values being linearly distributed, the air quantity of blower fan 2 is controlled, in each frequency values Under, after the air quantity of blower fan 2 is stable, PC 8 settles accounts instrument 7 by the first clearing instrument 6 and second and counts flowmeter 4 to be measured and standard Integrated flow of the flowmeter 5 within one identical time;
(c) a series of integrated flow of flowmeter 4 to be measured and proving flowmeter 5 under frequency values is contrasted, treats measurement of discharge Meter 4 carries out flow verification.
Specifically, the present embodiment uses 5 Comparison Methods, i.e., the set of frequency of frequency converter for set gradually for 10Hz, 20Hz, 30Hz, 40Hz and 50Hz.By flowmeter 4 to be measured in flowmeter installation site to be measured, after arrange parameter, start blower fan 2, will Frequency converter 3 is transferred to 10Hz, and the flow signal of flowmeter 4 and proving flowmeter 5 to be measured is transmitted respectively by 4~20mA current signals Instrument 7 is settled accounts to the first clearing instrument 6 and second, PC 8 is then sent to by RS485 communication interfaces again, treats that compressor flow is stable Afterwards, count the integrated flow of flowmeter 4 and proving flowmeter 5 to be measured within a period of time, then successively respectively 20Hz, In the case of 30Hz, 40Hz and 50Hz test, the integrated flow in same time period is taken, according to the test result of 5 points Judge whether the precision of flowmeter to be measured meets requirement, reach the purpose pinpointed the problems in time.

Claims (6)

1. a kind of platform for flow verification, it is characterised in that including test pipeline (1), blower fan (2), frequency converter (3), treat Flow measurement gauge (4), proving flowmeter (5), the first clearing instrument (6), the second clearing instrument (7) and PC (8);Described treats measurement of discharge Meter (4) and proving flowmeter (5) are connected in series on test pipeline (1), and blower fan (2) is arranged on one end of test pipeline (1), are become Frequency device (3) is connected with blower fan (2), for adjusting blower fan (2) air quantity, the described first clearing instrument (6) and flowmeter to be measured (4) phase Even, the second clearing instrument (7) is connected with proving flowmeter (5), and the flow signal of flowmeter (4) to be measured and proving flowmeter (5) leads to Overcurrent be transferred to respectively the first clearing instrument (6) and second clearing instrument (7), first clearing instrument (6) and second settle accounts instrument (7) with PC (8) connects.
A kind of 2. platform for flow verification according to claim 1, it is characterised in that described flowmeter to be measured (4) it is detachably connected with test pipeline (1), described proving flowmeter (5) is fixedly connected with test pipeline (1).
A kind of 3. platform for flow verification according to claim 1, it is characterised in that described proving flowmeter (5) using the flowmeter of the high at least one grade of ratio of precision flowmeter to be measured (4).
A kind of 4. platform for flow verification according to claim 3, it is characterised in that described proving flowmeter (5) flowmeter of the high grade of ratio of precision flowmeter to be measured (4) is used.
A kind of 5. platform for flow verification according to claim 1, it is characterised in that the first described clearing instrument (6) it is connected with the second clearing instrument (7) by RS485 communication interfaces with PC (8).
6. a kind of platform for flow verification according to claim 1, it is characterised in that described blower fan (2) are entered Gas port is connected with one end of test pipeline (1), and described proving flowmeter (5) and flowmeter to be measured (4) are along gas flow direction It is sequentially arranged.
CN201721107198.9U 2017-08-31 2017-08-31 A kind of platform for flow verification Expired - Fee Related CN207197639U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721107198.9U CN207197639U (en) 2017-08-31 2017-08-31 A kind of platform for flow verification

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721107198.9U CN207197639U (en) 2017-08-31 2017-08-31 A kind of platform for flow verification

Publications (1)

Publication Number Publication Date
CN207197639U true CN207197639U (en) 2018-04-06

Family

ID=61790321

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721107198.9U Expired - Fee Related CN207197639U (en) 2017-08-31 2017-08-31 A kind of platform for flow verification

Country Status (1)

Country Link
CN (1) CN207197639U (en)

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20180406

Termination date: 20210831

CF01 Termination of patent right due to non-payment of annual fee