Recycled two-phase flow flowmeter calibrating platform of wet steam

Abstract

The invention provides a recycled two-phase flow flowmeter calibrating platform of wet steam, which is characterized in that a heat storage box of a stable water supply unit is communicated with a concurrent boiler through a boiler feed pipe; a gear pump, a water feed flowmeter and a water feed conductivity meter are arranged on the boiler feed pipe in sequence; a concurrent boiler of a steam-generating unit is communicated with a cooling heat exchanger by a steam supply pipe; a detected meter, a meter detector and a water sampler are arranged on the steam supply pipe in sequence; a cooling heat exchanger of a waste heat recovery unit is connected with the heat storage box by a water inlet tube of the heat storage box; the water sampler is communicated with a sampling water pipe; and the sampling water pipe is connected with a water sample conductivity meter and a sampling water regulating valve. The calibrating platform can provide the wet steam for calibration and the wet steam for the calibration can regulate mass flow rate and steam dryness. A high-accuracy wet steam standard flowmeter and a standard dryness meter are arranged on the calibrating platform, thus being capable of executing high-accuracy calibration on the detected meter. The wet steam for the calibration can be used for recycling fluids and waste heat, thus reducing the operating cost.

Description

technical field [0001] The invention relates to the field of flow measurement, and is a recovery type flowmeter calibration platform. Background technique [0002] A flow meter is an instrument for measuring fluid flow. The performance of the flowmeter mainly has two points, one is the measurement accuracy of the flowmeter, and the other is the range of the flowmeter. The measurement error is the relative error between the flow rate measured by the flowmeter and the actual flow rate, and the maximum relative error is usually used to reflect the measurement accuracy of the flowmeter. The range of the flowmeter is within the range of the maximum measurement error given by the flowmeter, the range of the minimum flow rate and the maximum flow rate measured by the flowmeter. Before leaving the factory, or during the development process, or during re-inspection, the flowmeter needs to be verified or calibrated by the special equipment of the flow calibration table to confirm wh...

AI Technical Summary

Problems solved by technology

Then, since wet steam is a gas-liquid two-phase flow fluid, the flow state of wet steam is diverse and complex, and there are few economical and practical wet steam two-phase flow meters in engineering, and the wet steam two-phase flow meter calibration Due to the following five reasons, there is no wet steam two-phase flow meter calibration platform in the prior art

The reasons for these five aspects are as follows: first, because wet steam is a gas-liquid two-phase flow, there is no high-precision wet steam flowmeter in the prior art as a standard flow meter for calibration; The difference is that the calibration of the wet steam flowmeter is not only to calibrate its flow rate, but also to calibrate its steam dryness, and there is no standard steam dryness meter for online measurement of steam dryness in the prior art; The third is that, unlike the single-phase flowmeter calibration platform, the wet steam used for calibration consumes too much energy; the fourth is that high-pressure and high-temperature steam is dangerous during the calibration process; the fifth is that calibration The wet steam used is difficult to recover, and the cost of calibration is very high

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