CN209639805U - A kind of aerospace automatic calibration unit for gas flowmeters - Google Patents

A kind of aerospace automatic calibration unit for gas flowmeters Download PDF

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Publication number
CN209639805U
CN209639805U CN201920287562.7U CN201920287562U CN209639805U CN 209639805 U CN209639805 U CN 209639805U CN 201920287562 U CN201920287562 U CN 201920287562U CN 209639805 U CN209639805 U CN 209639805U
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China
Prior art keywords
control system
gas
collecting pipe
solenoid valve
gas source
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CN201920287562.7U
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Chinese (zh)
Inventor
陈立
王鹏
韩超
伍岳
孙国锋
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Establishment of Aviation Co Ltd
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Establishment Of Aviation Technology Co Ltd
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Abstract

It include comparison method verification system, gas source control system and computer control system the utility model discloses a kind of aerospace automatic calibration unit for gas flowmeters, comparison method verification system includes that sequentially connected air inlet pipe, isocon, the first collecting pipe, the second collecting pipe and escape pipe, gas source control system are connect with air inlet pipe;It has been arranged in parallel multiple groups standard test pipeline between isocon and the first collecting pipe, multiple groups have been arranged in parallel between the first collecting pipe and the second collecting pipe and have been accredited pipeline.The utility model uses same basic platform, can complete the calibrating of flow, pressure, temperature parameter;Using conventional parts, practicability is good, and manufacturing cost is low, and cost performance is high, structurally reasonable, highly-safe;Guarantee that the gas of the pipeline of each arranged in groups is consistent, can automatically continuously examine and determine, and guarantees to examine and determine the accuracy of data.

Description

A kind of aerospace automatic calibration unit for gas flowmeters
Technical field
The utility model belongs to aerospace engine certificate test technical field, more particularly to a kind of based on standard vortex street The aerospace automatic calibration unit for gas flowmeters of flow sensor combination comparison method.
Background technique
Currently, the accurate metering of gas flow is increasingly taken seriously, Calibrating Gas Flow Meter in aerospace field Standard set-up wide variety.There are PVTt method, standard volume tube method, bell jar process, sonic nozzle method etc. using more universal.Wherein PVTt method and standard volume tube method are usually only arranged in flow instrument research institution and metrological service, for verifying other standards stream Meter.Bell jar process is primarily adapted for use in small flow, the gas instrument calibrating of low differential pressure and small diameter tube due to finite volume.Velocity of sound spray Structure is complicated for mouth method, is of little use.And vortex-shedding meter has structure simple, it is internal big without movable member long service life range ratio The advantages that reproducible crushing small corrosion-and high-temp-resistant.Currently, the standard degree of the gas vortex street sensor in China is generally at 0.5 grade In~1 grade of level, from the level of accuracy, it can not be used as 0.5 grade standard sensor, but the model of this kind of instrument Degree of enclosing is very wide, and generally all in 10:1~15:1 or so, and repeatability is good, even higher within 0.2%.
Therefore the utility model devises a kind of gas flowmeter based on standard vortex flow sensors combination comparison method Automatic calibrator, since its structure is simply at low cost, many medium-small flow instrument manufacturing enterprise all can be used ties as metering The measuring instrument of calculation, the reinspection expense for needing periodically to recheck a large amount of instrument are also a very big spending.
Utility model content
The purpose of this utility model is to provide it is a kind of it is reasonable in design, can in groups using, automatic Verification calculate by The aerospace automatic calibration unit for gas flowmeters of the parameters such as flow, the temperature and pressure value of Calibrating Gas Flow Meter and its Calibration method.
To achieve the above object, the utility model provides the following technical solutions: a kind of aerospace gas flowmeter from Dynamic calibrating installation includes comparison method verification system, gas source control system and computer control system;The comparison method verification system Including sequentially connected air inlet pipe, isocon, the first collecting pipe, the second collecting pipe and escape pipe, the gas source control system with Air inlet pipe connection;Multiple groups standard test pipeline, the standard test have been arranged in parallel between the isocon and the first collecting pipe The first solenoid valve, standard vortex flow sensors, the first thermometer, first pressure gauge and second have been sequentially arranged on pipeline Solenoid valve;It has been arranged in parallel multiple groups between first collecting pipe and the second collecting pipe and has been accredited pipeline, it is described accredited Third solenoid valve, tested gas flowmeter, second temperature meter, second pressure gauge and the 4th electromagnetism have been sequentially arranged on pipeline Regulating valve;The computer control system respectively with gas source control system, the first solenoid valve, standard vortex-street flow sensing Device, the first thermometer, first pressure gauge, the second solenoid valve, third solenoid valve, tested gas flowmeter, the second temperature Degree meter, second pressure gauge and the 4th solenoid valve are electrically connected.
Preferably, the gas source control system includes Roots blower air supply system and frequency converter regulating system.
Preferably, the computer control system includes computer hardware, underlying Operating System, system controlling software.
Preferably, it is controlled between the computer control system and comparison method verification system, gas source control system with data Line connection;It is connected between the comparison method verification system and gas source control system with fuel oil conduit.
Compared with prior art, the utility model has the beneficial effects that
First is that the calibrating of the parameters such as flow, pressure, temperature can be completed using same basic platform;
Second is that practicability is good, and manufacturing cost is low using conventional parts, cost performance is high, structurally reasonable, highly-safe;
Third is that standard test pipeline and accredited pipeline are used using arranged in groups mode, D can be measuredN=5-500mm Gas flowmeter calibrating;
Fourth is that using the same isocon, the same collecting pipe guarantees that the gas of the pipeline of each arranged in groups keeps one It causes, can automatically continuously examine and determine, and guarantee to examine and determine the accuracy of data.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of a preferred embodiment of the utility model;
Fig. 2 is the operating structure schematic diagram of embodiment illustrated in fig. 1.
In figure: 1, comparison method verification system;2, gas source control system;3, computer control system;4, air inlet pipe;5, it shunts Pipe;6, the first collecting pipe;7, the second collecting pipe;8, escape pipe;9-1, the first solenoid valve;9-2, the second solenoid valve; 9-3, third solenoid valve;9-4, the 4th solenoid valve;10, standard vortex flow sensors;11-1, the first thermometer; 11-2, second temperature meter;12-1, first pressure gauge;12-2, second pressure gauge;13, it is detected gas flowmeter;14, frequency converter tune Section system;15, Roots blower air supply system.
Specific embodiment
The preferred embodiment that the utility model is described below in conjunction with attached drawing, to one preferred embodiment of the utility model In technical solution be clearly and completely described.
- Fig. 2 referring to Figure 1, the utility model include comparison method verification system 1, gas source control system 2 and computer control System 3.
The comparison method verification system 1 includes sequentially connected air inlet pipe 4, isocon 5, the first collecting pipe 6, second confluence Pipe 7 and escape pipe 8, the gas source control system 2 are connect with air inlet pipe 1;It is in parallel between the isocon 5 and the first collecting pipe 6 It is provided with multiple groups standard test pipeline, the first solenoid valve 9-1, standard vortex street have been sequentially arranged on the standard test pipeline Flow sensor 10, the first thermometer 11-1, first pressure gauge 12-1 and the second solenoid valve 9-2;First collecting pipe 6 It has been arranged in parallel multiple groups between the second collecting pipe 7 and has been accredited pipeline, has been sequentially arranged third electromagnetism on the accredited pipeline Regulating valve 9-3, tested gas flowmeter 13, second temperature meter 11-2, second pressure gauge 12-2 and the 4th solenoid valve 9-4.
The computer control system 3 respectively with gas source control system 2, the first solenoid valve 9-1, standard flux of vortex street Sensor 10, the first thermometer 11-1, first pressure gauge 12-1, the second solenoid valve 9-2, third solenoid valve 9-3, quilt Gas flowmeter 13, second temperature meter 11-2, second pressure gauge 12-2 and the 4th solenoid valve 9-4 is examined to be electrically connected.
In the present embodiment, the gas source control system 2 includes Roots blower air supply system 15 and frequency converter regulating system 14。
In the present embodiment, the computer control system 3 is soft including computer hardware, underlying Operating System, system control Part.
In the present embodiment, number is used between the computer control system 3 and comparison method verification system 1, gas source control system 2 It is connected according to control line;It is connected between the comparison method verification system 1 and gas source control system 2 with fuel oil conduit.
Using the calibration method of above-mentioned aerospace automatic calibration unit for gas flowmeters, include the following steps,
A, start computer control system 3, accredited gas flowmeter is installed at tested gas flowmeter 13 simultaneously It is ready;
B, start Roots blower air supply system 15 and frequency converter regulating system 14 is ready, guarantee that gas source is supplied to air inlet pipe 4;
C, after gas enters isocon 5 from air inlet pipe 4, it is diverted to each group standard test pipeline, is converged in the first collecting pipe 6 It closes, to guarantee that the pressure of each group gas source is consistent, then is diverted to accredited system, to examine and determine out tested gas flowmeter 13 Flow, temperature and pressure value confirm the qualified or not of gas flowmeter;After wherein gas is from air inlet pipe 4 into isocon 5, Pass sequentially through the first solenoid valve 9-1, standard vortex flow sensors 10, the first thermometer 11-1, first pressure gauge 12-1, Second solenoid valve 9-2 enters the first collecting pipe 6, then successively passes through third solenoid valve 9-3, is detected gas flowmeter 13, second temperature meter 11-2, second pressure gauge 12-2, the 4th solenoid valve 9-4 pass through escape pipe after entering the second collecting pipe 7 8 discharges;
D, by the first solenoid valve 9-1 in comparison method verification system 1, standard vortex flow sensors 10, the first temperature Degree meter 11-1, first pressure gauge 12-1, the second solenoid valve 9-2, third solenoid valve 9-3, are detected gas flowmeter 13, Second temperature meter 11-2, second pressure gauge 12-2, the data of the 4th solenoid valve 9-4 collect in computer control system 3, By software systems, automatic Verification calculates the flow of accredited gas flowmeter, temperature and pressure value to confirm gas flow That counts is qualified or not.
The utility model uses same basic platform, can complete the calibrating of flow, pressure, temperature parameter;Using zero conventional Part, practicability is good, and manufacturing cost is low, and cost performance is high, structurally reasonable, highly-safe;Standard test pipeline and accredited pipeline are adopted It is used with arranged in groups mode, D can be measuredNThe calibrating of the gas flowmeter of=5-500mm;Using the same isocon, together One collecting pipe guarantees that the gas of the pipeline of each arranged in groups is consistent, can automatically continuously examine and determine, and guarantees to examine and determine number According to accuracy.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (4)

1. a kind of aerospace automatic calibration unit for gas flowmeters, it is characterised in that: including comparison method verification system (1), Gas source control system (2) and computer control system (3);
The comparison method verification system (1) includes sequentially connected air inlet pipe (4), isocon (5), the first collecting pipe (6), second Collecting pipe (7) and escape pipe (8), the gas source control system (2) connect with air inlet pipe (4);The isocon (5) is converged with first It has been arranged in parallel multiple groups standard test pipeline between flow tube (6), the first electromagnetism tune has been sequentially arranged on the standard test pipeline Save valve (9-1), standard vortex flow sensors (10), the first thermometer (11-1), first pressure gauge (12-1) and the second electromagnetism Regulating valve (9-2);It has been arranged in parallel multiple groups between first collecting pipe (6) and the second collecting pipe (7) and has been accredited pipeline, it is described Third solenoid valve (9-3), tested gas flowmeter (13), second temperature meter (11- have been sequentially arranged on accredited pipeline 2), second pressure gauge (12-2) and the 4th solenoid valve (9-4);The computer control system (3) controls with gas source respectively System (2), the first solenoid valve (9-1), standard vortex flow sensors (10), the first thermometer (11-1), first pressure Table (12-1), the second solenoid valve (9-2), third solenoid valve (9-3), tested gas flowmeter (13), second temperature (11-2), second pressure gauge (12-2) and the 4th solenoid valve (9-4) is counted to be electrically connected.
2. aerospace automatic calibration unit for gas flowmeters according to claim 1, it is characterised in that: the gas source Control system (2) includes Roots blower air supply system (15) and frequency converter regulating system (14).
3. aerospace automatic calibration unit for gas flowmeters according to claim 1, it is characterised in that: the calculating Machine control system (3) includes computer hardware, underlying Operating System and system controlling software.
4. aerospace automatic calibration unit for gas flowmeters according to claim 1, it is characterised in that: the calculating It is connect between machine control system (3) and comparison method verification system (1), gas source control system (2) with data control line;The comparison It is connect between method verification system (1) and gas source control system (2) with fuel oil conduit.
CN201920287562.7U 2019-03-06 2019-03-06 A kind of aerospace automatic calibration unit for gas flowmeters Active CN209639805U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920287562.7U CN209639805U (en) 2019-03-06 2019-03-06 A kind of aerospace automatic calibration unit for gas flowmeters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920287562.7U CN209639805U (en) 2019-03-06 2019-03-06 A kind of aerospace automatic calibration unit for gas flowmeters

Publications (1)

Publication Number Publication Date
CN209639805U true CN209639805U (en) 2019-11-15

Family

ID=68495453

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920287562.7U Active CN209639805U (en) 2019-03-06 2019-03-06 A kind of aerospace automatic calibration unit for gas flowmeters

Country Status (1)

Country Link
CN (1) CN209639805U (en)

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Address after: Room 2-103, Warner Jinghu Garden, Dongli District, Tianjin

Patentee after: Establishment of Aviation Co., Ltd

Address before: Room 2-103, Warner Jinghu Garden, Dongli District, Tianjin

Patentee before: CHENGLI AVIATION TECHNOLOGY Co.,Ltd.