Nozzle block type gas flowmeter calibrating device

A technology of gas flow meter and nozzle device, which is applied in the direction of measuring device, liquid/fluid solid measurement, test/calibration device, etc. It can solve the problems of heavy weight, inconvenient installation, disassembly and maintenance of nozzle box, and large volume of nozzle box and other problems, to achieve the effect of convenient maintenance, increasing the scope of application, and large detection range

Inactive Publication Date: 2015-04-22
ZHENJIANG MEASUREMENT VERIFICATION TEST CENT
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the nozzle box in the sonic nozzle gas flowmeter is large in size and heavy in weight, which makes the installation, disassembly and maintenance of the nozzle box very inconvenient

Method used

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  • Nozzle block type gas flowmeter calibrating device
  • Nozzle block type gas flowmeter calibrating device

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Experimental program
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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] like figure 1 Shown: a nozzle group type gas flow meter verification device, which includes a manifold 1 with both ends closed, the manifold 1 is a U-shaped structure, and the vertical gas inlet pipe on the front side of the manifold 1 is connected at intervals There are multiple inlet pipes 2 with different calibers, and each inlet pipe 2 is connected to the manifold 1 through bellows 4 respectively. A muffler 7 is installed at the entrance of the front end of the inlet pipe 2, and the air inlet section of the manifold 1 is connected with a plurality of inlet pipes 2 of different calibers at intervals, and the middle parts of the plurality of inlet pipes 2 of different calibers are respectively arranged There are clamping tables 3 for installing gas flowmeters of different sizes.

[0023] A plurality of nozzle devices capable of gen...

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PUM

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Abstract

The invention relates to a gas flowmeter calibration device, in particular to a nozzle block type gas flowmeter calibrating device. The nozzle block type gas flowmeter calibrating device comprises a main header, a gas outlet segment of the main header is connected with a plurality of nozzle devices capable of generating different flow rates at intervals, the nozzle devices are connected to a gas outlet header through gas outlet pipelines, and the gas outlet header is connected to a power pump; a gas inlet segment of the main header is connected with a plurality of different-caliber inlet pipelines at intervals, and meter clamping platforms used for installing different-size gas flowmeters are arranged in the middles of the different-caliber inlet pipelines. The nozzle devices are divided into a plurality of sets, each set of nozzle devices are assembled in one nozzle box body, each nozzle box body is installed on a base track at the bottom of the nozzle box body, and each nozzle box body can slide along the corresponding base track. The gas flowmeter calibration device is wide in detection range and high in detection precision, and the nozzle boxes are convenient to install, detach and maintain.

Description

technical field [0001] The invention relates to a gas flow meter verification device, in particular to a nozzle group type gas flow meter verification device. Background technique [0002] As urban gas enters a period of rapid development, more and more large-caliber gas flowmeters are applied to natural gas pipelines, and the detection accuracy of large-caliber gas flowmeters is highly required. [0003] The gas flowmeter needs to be tested by a verification device to determine its accuracy. The gas flowmeter after production needs to be calibrated, and it can be sold only after reaching the standard. Moreover, the gas flowmeter needs periodic verification and calibration. The verification device can produce a standard actual flow rate as a standard value. However, the detection range of the existing verification devices is relatively small, and the detection accuracy is not high. [0004] The sonic nozzle gas flowmeter is often selected as a standard meter due to its hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F25/00
Inventor 肖晖石建荣周轶董芳赵作广
Owner ZHENJIANG MEASUREMENT VERIFICATION TEST CENT
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