CN201193955Y - Gas flow accuracy calibrating apparatus - Google Patents
Gas flow accuracy calibrating apparatus Download PDFInfo
- Publication number
- CN201193955Y CN201193955Y CNU2008200221964U CN200820022196U CN201193955Y CN 201193955 Y CN201193955 Y CN 201193955Y CN U2008200221964 U CNU2008200221964 U CN U2008200221964U CN 200820022196 U CN200820022196 U CN 200820022196U CN 201193955 Y CN201193955 Y CN 201193955Y
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- standard
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- gas flow
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Abstract
The utility model discloses a gas flow standard device. The input end of a surge tank (1) is connected with a nozzle collecting pipe (15) which is correspondingly connected with a plurality of nozzles (4) on a nozzle container (11), the output end of the nozzle container (11) is connected with a first output end of a standard meter trunk (10), and a second output end of the standard meter trunk (10) is connected with a draught fan. One or more than one standard turbine flowmeter (5) is connected in parallel between the standard meter trunk (10) and the input end of a detected meter trunk (9). The input end of the detected meter trunk (9) is connected with one or more than one meter clamp (8) used for installing tested meters. With the mode of combination of sonic nozzles and turbine flowmeters, the gas flow standard device has the advantages of high stability and favorable repeatability of the sonic nozzle as well as has the advantages of high precision and wide measuring range of the standard turbine flowmeter.
Description
Technical field the utility model relates to a kind of caliberating device that is used for detected gas flowmeter accuracy.
The existing scaling method of background technology gas flow meter generally in the following way.First kind of mode: tested table and standard scale be cascaded detect, demarcate.The major defect of this mode is that the corresponding standard scale of tested table is when tested table type changes greatly, standard scale does not satisfy its flow range, i.e. the poor selectivity of flow point, underaction, scope is little, and also there is the cost height in the manner, detects the high shortcoming of cost.The second way: gas bell caliberating device method.The major defect of this mode is, the low precision of device own, and to require height to environment, accuracy of detection can not be satisfactory.
Utility model content technical problem to be solved in the utility model is, a kind of new gas flow standard device is provided, by adopting sonic nozzle and standard turbo flowmeter structure combining form, improve and demarcate accuracy and calibrated span, in order to overcome the deficiency of above-mentioned existing method and product.
The technical scheme that its technical matters that solves the utility model adopts is as follows:
A kind of gas flow standard device comprises buffer tank, it is characterized in that: the input end of buffer tank is connected with the nozzle collection tube, nozzle collection tube and the corresponding connection of a plurality of nozzles on the nozzle container; Nozzle container input end connects first output terminal of standard scale manifold trunk, and second output terminal of standard scale manifold trunk is connected with induced draft fan; Be parallel with one or an above standard turbo flowmeter between standard scale manifold trunk and the tested table manifold trunk; The input end of tested table manifold trunk is connected with the meter-clamping apparatus that is used to install tested table more than or.
The nozzle collection tube is by corresponding connection of a plurality of nozzles on a plurality of first pneumatic ball valves and cylinder assembly and the nozzle container.
On nozzle collection tube and nozzle container, be respectively arranged with pressure acquisition point and temperature acquisition point.
Also be connected with variable valve between each standard turbo flowmeter and the standard scale manifold trunk.
The input end of tested table is connected with preceding straight tube.
Be provided with pressure acquisition point or temperature acquisition point in the front and back end of each standard turbo flowmeter and the front and back end of tested table.
The utlity model has following good effect:
(1), the utility model mode of adopting sonic nozzle and standard turbo flowmeter to combine, it is high both to have brought into play sonic nozzle stability, the advantage of good reproducibility has been brought into play standard turbo flowmeter accuracy height again, the advantage of broad quantum.
(2), sonic nozzle and standard turbo flowmeter check standard each other, not only improved the reliability of package unit, and the use inconvenience of having avoided regular censorship to bring.
(3), adopt variable frequency control, and utilize induced draft fan to make air-flow power, energy-saving effect is obvious.
(4), the standard turbo flowmeter adopt many parallel, increased the flow range of tested table.
(5), accuracy of detection and staking-out work efficient increase substantially.
(6), manufacturing cost and working service cost are lower.
Description of drawings Fig. 1 is a structural representation of the present utility model.
Embodiment further specifies the utility model below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, the utility model comprises buffer tank 1, and its output terminal is used to connect vacuum pump, and input end is connected with nozzle collection tube 15.Nozzle collection tube 15 is respectively arranged with pressure acquisition point 16 and temperature acquisition point 13 by 4 corresponding connections of a plurality of nozzles on a plurality of first pneumatic ball valves 14 and cylinder assembly and the nozzle container 11 on nozzle collection tube 15 and nozzle container 11.
The input end of tested table manifold trunk 9 is connected with meter-clamping apparatus 8 respectively by a plurality of the 3rd pneumatic ball valves 6, and this meter-clamping apparatus 8 is used to install tested table.The input end of tested table all is connected with preceding straight tube 7.
Also be provided with pressure acquisition point and temperature acquisition point in the front and back end of each standard turbo flowmeter 5 and the front and back end of tested table.Computing machine carries out computing with force value and the temperature value that collects, and with instrument coefficient, the linearity or the error of indication that obtains tested table, realizes the accurate demarcation of tested table.
Claims (6)
1. a gas flow standard device comprises buffer tank (1), it is characterized in that: the input end of buffer tank (1) is connected with nozzle collection tube (15), the corresponding connection of a plurality of nozzles (4) on nozzle collection tube (15) and the nozzle container (11); Nozzle container (11) input end connects first output terminal of standard scale manifold trunk (10), and second output terminal of standard scale manifold trunk (10) is connected with induced draft fan; Be parallel with one or an above standard turbo flowmeter (5) between standard scale manifold trunk (10) and the tested table manifold trunk (9); The input end of tested table manifold trunk (9) is connected with the meter-clamping apparatus (8) that is used to install tested table more than or.
2. gas flow standard device according to claim 1 is characterized in that: nozzle collection tube (15) is by corresponding connection of a plurality of nozzles (4) on a plurality of first pneumatic ball valves (14) and cylinder assembly and the nozzle container (11).
3. gas flow standard device according to claim 1 is characterized in that: be respectively arranged with pressure acquisition point (16) and temperature acquisition point (13) on nozzle collection tube (15) and nozzle container (11).
4. gas flow standard device according to claim 1 is characterized in that: also be connected with variable valve between each standard turbo flowmeter (5) and the standard scale manifold trunk (10).
5. gas flow standard device according to claim 1 is characterized in that: the input end of tested table is connected with preceding straight tube (7).
6. gas flow standard device according to claim 1 is characterized in that: be provided with pressure acquisition point or temperature acquisition point in the front and back end of each standard turbo flowmeter (5) and the front and back end of tested table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200221964U CN201193955Y (en) | 2008-05-05 | 2008-05-05 | Gas flow accuracy calibrating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200221964U CN201193955Y (en) | 2008-05-05 | 2008-05-05 | Gas flow accuracy calibrating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201193955Y true CN201193955Y (en) | 2009-02-11 |
Family
ID=40393490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200221964U Ceased CN201193955Y (en) | 2008-05-05 | 2008-05-05 | Gas flow accuracy calibrating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201193955Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104215305A (en) * | 2013-06-04 | 2014-12-17 | 宁夏嘉翔自控技术有限公司 | Full-automatic supersonic nozzle high flow standard device |
| CN106556430A (en) * | 2016-10-17 | 2017-04-05 | 金卡高科技股份有限公司 | A kind of gas Actual flow test system and method with self-calibration function |
| CN107702768A (en) * | 2017-10-12 | 2018-02-16 | 西安航天动力研究所 | A kind of pressure-air big flow field calibration device and method |
-
2008
- 2008-05-05 CN CNU2008200221964U patent/CN201193955Y/en not_active Ceased
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215305A (en) * | 2013-06-04 | 2014-12-17 | 宁夏嘉翔自控技术有限公司 | Full-automatic supersonic nozzle high flow standard device |
| 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 |
| CN104061984B (en) * | 2014-06-30 | 2017-07-07 | 东华理工大学 | A kind of high-speed gas flow calibration system and calibration method based on laboratory multiple-way duct |
| CN106556430A (en) * | 2016-10-17 | 2017-04-05 | 金卡高科技股份有限公司 | A kind of gas Actual flow test system and method with self-calibration function |
| CN107702768A (en) * | 2017-10-12 | 2018-02-16 | 西安航天动力研究所 | A kind of pressure-air big flow field calibration device and method |
| CN107702768B (en) * | 2017-10-12 | 2020-03-03 | 西安航天动力研究所 | High-pressure air large-flow field calibration device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090211 |
|
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20120120 Decision number of declaring invalidation: 17938 Granted publication date: 20090211 |