Calibrating device for fluid metering instrument

A technology for measuring instruments and verification devices, which is applied in the field of verification devices for fluid metering instruments, can solve problems such as high detection accuracy, long detection cycle, and large energy consumption, and achieve the goal of improving automation, reducing verification costs, and increasing verification speed Effect

Active Publication Date: 2015-10-07
云南卓烁科技有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0010] Insufficiency of ordinary devices: Affected by three factors: the stability of flow rate, the accuracy of standard measuring instruments, and the indication accuracy of the meter to be inspected, the volume to be inspected needs to be set larger to obtain higher detection accuracy
Therefore, the detection cycle is long, the labor cost of detection is high, and the energy consumption of the detection process is large, which is not conducive to product competition

Method used

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  • Calibrating device for fluid metering instrument
  • Calibrating device for fluid metering instrument
  • Calibrating device for fluid metering instrument

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Embodiment Construction

[0051] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0052] 1. Structure Description

[0053] The product of the flow meter verification device of the present invention is composed of multiple units, but the simplest structure related to the present invention is shown in the accompanying drawing, which consists of a pressure stabilization device 1, a flow rate adjustment device 3 and at least one sampling timing unit 4 .

[0054] After being pressurized by the pressure stabilizing device 1, the testing fluid passes through the testing pipeline, flows through at least one tested meter 2 in turn, flows through the flow rate adjusting device 3, and finally flows out of the testing pipeline.

[0055] A sampling timing unit 4 is installed on each tested meter 2 .

[0056] The flow rate adjusting devi...

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Abstract

The invention provides a calibrating device for a fluid metering instrument. The calibrating device is composed of a pressure stabilizing device, a flow rate adjusting device and at least one sampling timing unit. A fluid used for detection is pressurized by means of the pressure stabilizing device and passes through a detecting pipeline and sequentially flows through at least one detected instrument, the flow rate adjusting device and finally flows out of the detecting pipeline. Each detected instrument is provided with a pulse time difference unit. The flow rate adjusting device and sampling timing units are connected by means of data communication lines. The calibrating device for the fluid metering instrument has following beneficial effects: the invention brings forward the calibrating method for the fluid metering instrument more suitably applying electronic technology such that automation degree of the calibrating device is increased, calibrating speed is improved and calibrating cost is decreased; the invention is not only used for calibration of water meters but also applied to calibrating devices of a gas meter, an oil meter, a fluid flowmeter, a gas flowmeter and other metering instruments.

Description

technical field [0001] The invention belongs to an instrument verification device, in particular to a verification device for a fluid measuring instrument. Background technique [0002] The error verification and error adjustment of fluid metering instruments require the use of verification devices. According to GB / T778-2007, JJG162-2009 and other standards, the verification device generally adopts the volume comparison method, and the relative error calculation formula is as follows: [0003] ϵ = v i - v a v a × 100 % ……………………Formula ① [0004] in: [0005] ε relative error [0006] V i The volume indicated by the tested flow meter, [0007] V a actual volume [0008] On the current common flow verification device, the actual volume...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F25/00
Inventor 邓旭东
Owner 云南卓烁科技有限公司
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