CN203163837U - Gas flow instrument field calibration device - Google Patents
Gas flow instrument field calibration device Download PDFInfo
- Publication number
- CN203163837U CN203163837U CN 201320092205 CN201320092205U CN203163837U CN 203163837 U CN203163837 U CN 203163837U CN 201320092205 CN201320092205 CN 201320092205 CN 201320092205 U CN201320092205 U CN 201320092205U CN 203163837 U CN203163837 U CN 203163837U
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- CN
- China
- Prior art keywords
- container
- gas flow
- calibration device
- field calibration
- flow instrument
- 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 - Lifetime
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Abstract
The utility model relates to a gas flow instrument field calibration device and belongs to measuring instruments. The gas flow instrument field calibration device comprises a convergence container, sound velocity nozzles and a stagnant container and is characterized in that the convergence container and the stagnant container are both of a cylindrical structure, and the sound velocity nozzles are arranged between the upper end face of the convergence container and the lower end face of the stagnant container. By arranging a group of sound velocity nozzles between the upper end face of the convergence container and the lower end face of the stagnant container to form an annular shape, the gas flow instrument field calibration device is compact in structure and small in size and weight.
Description
Technical field
The utility model relates to gas flow meter performance field calibration device, belongs to surveying instrument.
Background technology
Generally adopt sonic nozzle method gas flow standard device in the calibration of the industrial gasses flow instrument more than the DN25 bore both at home and abroad.Sonic nozzle method gas flow standard device uses the sonic nozzle group, realizes different normal flow output by opening one or more different sonic nozzles, has degree of stability height, good, the no movable part of repdocutbility, long advantages such as (5 years) of calibration interval.But adopt sonic nozzle as the gas flow instrument calibrating installation of standard at present, the many employings of sonic nozzle mode in one line is arranged on confluxes between container and the stagnation container side wall, the volume of whole device is big, Heavy Weight, only is suitable for carrying out in the laboratory calibration of gas flow instrument.
Summary of the invention
The purpose of this utility model is to provide a kind of volume little, in light weight, can satisfy the calibrating installation of the gas flow instrument of field calibration requirement
Technical solution
The utility model comprises: the container that confluxes, sonic nozzle, stagnation container, it is characterized in that conflux container and stagnation container all adopt cylindrical structural, and between the lower surface of container upper end face and stagnation container of confluxing, be provided with sonic nozzle.
The vertical setting in lower end of described sonic nozzle and the container upper end face that confluxes, stagnation container, and annular spread.
The utility model one group of sonic nozzle that is circular layout between the lower surface of container upper end face and stagnation container of confluxing makes the apparatus structure compactness, and volume is little, in light weight.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
The utility model comprises vacuum pump 1, mozzle 2, the container 3 that confluxes, sonic nozzle 4, stagnation container 5, sonic nozzle operation valve group 6, electric-control system 7, stube cable 8, Measure Tube 9, first connect flexible pipe 10, second and connect flexible pipe 12, draft tube 13.Conflux container 3 and stagnation container 5 all adopts cylindrical structural, and one group of sonic nozzle 4 vertically arranges between the lower surface of container 3 upper surfaces and stagnation container 5 of confluxing, annular spread.
During work, electric-control system 7 is sucked air by setting flow control vacuum pump 1 by draft tube 13, enter stagnation container 5 through gas flow instrument 11, the first connection flexible pipe 10, Measure Tube 9, sonic nozzle operation valve group 6 opens and closes corresponding sonic nozzle 4 by setting flow under electric-control system 7 controls, realize the output of gas flow.Temperature sensor and the pressure transducer arranged on the stagnation container 5 are passed to electric-control system by stube cable 8 in real time with temperature, pressure signal, output valve to gas flow compensates computing, obtain the output of calibrating gas flow, compare with the gas flow instrument indication value, realize field calibration.
Claims (2)
1. gas flow meter shows the field calibration device, comprising: the container that confluxes, sonic nozzle, stagnation container, it is characterized in that conflux container and stagnation container all adopt cylindrical structural, and between the lower surface of container upper end face and stagnation container of confluxing, be provided with sonic nozzle.
2. gas flow meter according to claim 1 performance field calibration device is characterized in that, the vertical setting in lower end of described sonic nozzle and the container upper end face that confluxes, stagnation container, and annular spread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320092205 CN203163837U (en) | 2013-02-28 | 2013-02-28 | Gas flow instrument field calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320092205 CN203163837U (en) | 2013-02-28 | 2013-02-28 | Gas flow instrument field calibration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203163837U true CN203163837U (en) | 2013-08-28 |
Family
ID=49025014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320092205 Expired - Lifetime CN203163837U (en) | 2013-02-28 | 2013-02-28 | Gas flow instrument field calibration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203163837U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397699A (en) * | 2020-02-16 | 2020-07-10 | 西安航天动力试验技术研究所 | Weighing measuring device, flowmeter checking system and method |
-
2013
- 2013-02-28 CN CN 201320092205 patent/CN203163837U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397699A (en) * | 2020-02-16 | 2020-07-10 | 西安航天动力试验技术研究所 | Weighing measuring device, flowmeter checking system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130828 |