CN103868571A - Calibration device for gas flow orifice plate - Google Patents
Calibration device for gas flow orifice plate Download PDFInfo
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- CN103868571A CN103868571A CN201410131086.1A CN201410131086A CN103868571A CN 103868571 A CN103868571 A CN 103868571A CN 201410131086 A CN201410131086 A CN 201410131086A CN 103868571 A CN103868571 A CN 103868571A
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- orifice plate
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- pipeline
- plate box
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Abstract
The invention discloses a calibration device for a gas flow orifice plate. The calibration device comprises a work gas container, a pressure stabilizing can, an adjusting container, an orifice plate box and a work gas collecting device, wherein gas inlets and gas outlets of the work gas container, the pressure stabilizing can and the adjusting container are respectively provided with a valve, the orifice plate is arranged in the orifice plate box, and a plurality of material collecting containers are arranged in the work gas collecting device. The gas outlet of the work gas container is communicated with the gas inlet of the pressure stabilizing can, one side of the orifice plate box is communicated with the gas outlet of the pressure stabilizing can through a pipeline, the other side of the orifice plate box is communicated with the gas inlet of the adjusting container through a pipeline, an front orifice plate pressure meter and a rear orifice plate pressure meter are arranged in front of the orifice plate box and behind the orifice plate box, and a manual adjusting valve is arranged on a pipeline between the front orifice plate pressure meter and the gas outlet of the pressure stabilizing can. The gas outlet of the adjusting container is connected with a vacuum pump, and the gas inlet of each material collecting container is communicated with a pipeline between the orifice plate box and the adjusting container. The calibration device for the gas flow orifice plate is small in size, simple in flow and convenient to operate. A calibration error value is small, a plurality of flows can be calibrated at one time, and a plurality of orifice plates can be calibrated.
Description
Technical field
The invention belongs to the demarcation field of measurement of gas flow device, be specifically related to a kind of gas flow orifice plate caliberating device.
Background technology
The linear orifice plate of gas flow can be used for accurate measurement by its gas flow.But flow-through orifice inevitably exists error man-hour adding, so the theoretical value of its orifice flow constant and design has deviation, need to demarcate by testing.
Summary of the invention
The present invention proposes in order to overcome the shortcoming existing in prior art, its objective is a kind of gas flow orifice plate caliberating device is provided.
Technical scheme of the present invention is:
A kind of gas flow orifice plate caliberating device, comprises that air intake opening and gas outlet are provided with the working gas container of valve, buffer tank and adjustment container, also comprises that inside is placed with the orifice plate box of orifice plate, and in multiple rewinding containers are housed collect working gas device; The air intake opening of each rewinding container is provided with valve; Described working gas container outlet and buffer tank air intake opening are by pipeline connection, and the gas outlet of buffer tank and orifice plate box one side are by pipeline connection, and the opposite side of orifice plate box is communicated with adjustment container air inlet by pipeline; The front and back of orifice plate box are separately installed with before orifice plate manometer after manometer and orifice plate, on the pipeline before orifice plate between manometer and buffer tank gas outlet, manual adjustments valve are installed; The gas outlet of adjusting container is connected with vacuum pump; The air intake opening of each rewinding container is respectively by the pipeline connection between valve and orifice plate box and adjustment container.
Described adjustment container is the cylindrical container of steady operation gaseous tension.
The invention has the beneficial effects as follows:
The present invention can calibrated and calculated gas flow orifice plate, for the accuracy of linear flow orifice provides a kind of caliberating device, the linear flow aperture plate that can use special gas or other gas is demarcated.Volume of the present invention is little, flow process is simple, convenient operation, and calibrated error value is little, once can demarcate multiple flows, can demarcate polylith orifice plate.
Accompanying drawing explanation
Fig. 1 is the structural representation of gas flow orifice plate caliberating device of the present invention.
Wherein:
1 working gas container 2 buffer tanks
3 manual adjustments valve 4 orifice plate boxes
Manometer after manometer 6 orifice plates before 5 orifice plates
7 orifice plates 8 are collected working gas device
9 adjust container 10 vacuum pumps
11 rewinding containers.
Embodiment
Below in conjunction with embodiment and accompanying drawing, gas flow orifice plate caliberating device of the present invention is elaborated:
As shown in Figure 1, a kind of gas flow orifice plate caliberating device, comprise that air intake opening and gas outlet are provided with the working gas container 1 of valve, buffer tank 2 and adjust container 9, also comprise that inside is placed with the orifice plate box 4 of orifice plate 7, and in multiple rewinding containers 11 are housed collect working gas device 8; The air intake opening of each rewinding container 11 is provided with valve; Described working gas container 1 gas outlet and buffer tank 2 air intake openings are by pipeline connection, and the gas outlet of buffer tank 2 and orifice plate box 4 one sides are by pipeline connection, and the opposite side of orifice plate box 4 is communicated with adjustment container 9 air intake openings by pipeline; The front and back of orifice plate box 4 are separately installed with before orifice plate manometer 6 after manometer 5 and orifice plate, on the pipeline before orifice plate between manometer 5 and buffer tank 2 gas outlets, manual adjustments valve 3 are installed; The gas outlet of adjusting container 9 is connected with vacuum pump 10; The air intake opening of each rewinding container 11 is respectively by the pipeline connection between valve and orifice plate box 4 and adjustment container 9.
Described adjustment container 9 is the cylindrical container of steady operation gaseous tension.
The course of work of the present invention is as follows:
Step 1: orifice plate 7 is placed in orifice plate box 4;
Step 2: after collecting the interior all rewinding containers 11 of working gas device 8 and finding time, weigh respectively the weight m of each rewinding container 11
0, rewinding container 11 and adjustment container 9 all use liquid nitrogen frozen;
Step 3: working gas container 1 and buffer tank 2 are communicated, make to be full of in buffer tank 2 working gas of certain pressure;
Step 4: open valve and the manual modulation valve 3 of adjusting container 9, be communicated with working gas feed circuit and rewinding circuit, rewinding is received to adjusting container 9, make orifice plate 7 front and back pressure ratios be greater than 2, to meet sonic conditions, if the rear pressure of orifice plate 7 is higher, can use vacuum pump 10 to take out low-pressure;
Step 5: regulate manual modulation valve 3 to make the front manometer P of orifice plate
1the pressure showing reaches preset value, after stablizing, closes the valve of adjusting container 9, opens the valve of one of them rewinding container 11 simultaneously, and timing starts;
Step 6: reach after rewinding time t, close the valve of this rewinding container 11;
Step 7: pull down the weight m weighing after rewinding after this rewinding container 11
1;
Step 8: calculate this rewinding container 11 rewindings front and back weight difference m=m
1-m
0, the gas flow G that passes through orifice plate when t can obtain rewinding divided by the rewinding time, i.e. G=(m
1-m
0)/t;
Step 9: use formula G=Kd2P
1can obtain orifice constant K,
Wherein: G-is by the gas flow of orifice plate, K-orifice constant, the diameter of measured hole in d-orifice plate, P
1gaseous tension before-orifice plate.
Step 10: calibrated orifice plate 7 is arranged on behind the position that needs to install, only need know the front pressure P of orifice plate
1and before and after orifice plate, pressure meets sonic conditions, just can pass through formula G=Kd2P
1calculate the gas flow G by orifice plate.
The present invention can calibrated and calculated gas flow orifice plate, for the accuracy of linear flow orifice provides a kind of caliberating device, the linear flow aperture plate that can use special gas or other gas is demarcated.Volume of the present invention is little, flow process is simple, convenient operation, and calibrated error value is little, once can demarcate multiple flows, can demarcate polylith orifice plate.
Claims (2)
1. a gas flow orifice plate caliberating device, comprise that air intake opening and gas outlet are provided with the working gas container (1) of valve, buffer tank (2) and adjust container (9), it is characterized in that: also comprise that inside is placed with the orifice plate box of orifice plate (7) (4), and in multiple rewinding containers (11) are housed collect working gas device (8); The air intake opening of each rewinding container (11) is provided with valve; Described working gas container (1) gas outlet and buffer tank (2) air intake opening pass through pipeline connection, the gas outlet of buffer tank (2) and orifice plate box (4) one sides are by pipeline connection, and the opposite side of orifice plate box (4) is communicated with adjustment container (9) air intake opening by pipeline; The front and back of orifice plate box (4) are separately installed with before orifice plate manometer (6) after manometer (5) and orifice plate, on the pipeline between the front manometer (5) of orifice plate and buffer tank (2) gas outlet, manual adjustments valve (3) are installed; The gas outlet of adjusting container (9) is connected with vacuum pump (10); The air intake opening of each rewinding container (11) is respectively by the pipeline connection between valve and orifice plate box (4) and adjustment container (9).
2. a kind of gas flow orifice plate caliberating device according to claim 1, is characterized in that: the cylindrical container that described adjustment container (9) is steady operation gaseous tension.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201410131086.1A CN103868571B (en) | 2014-04-03 | 2014-04-03 | Calibration device for gas flow orifice plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410131086.1A CN103868571B (en) | 2014-04-03 | 2014-04-03 | Calibration device for gas flow orifice plate |
Publications (2)
Publication Number | Publication Date |
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CN103868571A true CN103868571A (en) | 2014-06-18 |
CN103868571B CN103868571B (en) | 2017-02-22 |
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CN201410131086.1A Active CN103868571B (en) | 2014-04-03 | 2014-04-03 | Calibration device for gas flow orifice plate |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107782419A (en) * | 2017-09-29 | 2018-03-09 | 马鞍山市恒欣减压器制造有限公司 | A kind of gas flow orifice plate caliberating device |
CN110857878A (en) * | 2018-08-23 | 2020-03-03 | 中国石油天然气股份有限公司 | Natural gas flowmeter calibration method |
CN110857877A (en) * | 2018-08-23 | 2020-03-03 | 中国石油天然气股份有限公司 | Calibration method of natural gas standard flowmeter |
CN110857874A (en) * | 2018-08-23 | 2020-03-03 | 中国石油天然气股份有限公司 | Natural gas flowmeter calibrating device |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201522317U (en) * | 2009-10-12 | 2010-07-07 | 贵州中烟工业有限责任公司 | Online calibrating device of orifice-plate steam flow measuring system |
CN101718636B (en) * | 2009-12-11 | 2012-11-21 | 北京航空航天大学 | Full-height fan flow rate-pressure rise test device and test method |
CN101865710B (en) * | 2010-05-26 | 2012-01-04 | 北京航空航天大学 | Method for measuring flow of negative-pressure gas |
CN203785747U (en) * | 2014-04-03 | 2014-08-20 | 核工业理化工程研究院 | Gas flow orifice plate calibrating apparatus |
-
2014
- 2014-04-03 CN CN201410131086.1A patent/CN103868571B/en active Active
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107782419A (en) * | 2017-09-29 | 2018-03-09 | 马鞍山市恒欣减压器制造有限公司 | A kind of gas flow orifice plate caliberating device |
CN110857878A (en) * | 2018-08-23 | 2020-03-03 | 中国石油天然气股份有限公司 | Natural gas flowmeter calibration method |
CN110857877A (en) * | 2018-08-23 | 2020-03-03 | 中国石油天然气股份有限公司 | Calibration method of natural gas standard flowmeter |
CN110857874A (en) * | 2018-08-23 | 2020-03-03 | 中国石油天然气股份有限公司 | Natural gas flowmeter calibrating device |
CN110857878B (en) * | 2018-08-23 | 2021-03-09 | 中国石油天然气股份有限公司 | Natural gas flowmeter calibration method |
CN110857874B (en) * | 2018-08-23 | 2021-03-09 | 中国石油天然气股份有限公司 | Natural gas flowmeter calibrating device |
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CN103868571B (en) | 2017-02-22 |
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