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Method based on evaporation, metering and regulation of steam flow

A steam flow and flow technology, applied in relative volume flow measurement, flow control, control/regulation systems, etc., can solve the problems of low operating temperature, poor reliability, and inability to control flow with small steam flow, and achieve high operating temperature. , to achieve the effect of control

Active Publication Date: 2018-11-23
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] The technical problem to be solved by the present invention is that the existing steam flow meter has poor reliability, low operating temperature, is not suitable for the measurement of relatively small steam flow and cannot be used for flow control. And the method of adjustment, the steam flow is measured by the balance weighing method, and the steam flow is controlled by adjusting the temperature of the heating box of the evaporation container. It has good reliability, high temperature, and is suitable for the measurement of small steam flow. The advantages of flow control and simple device structure can form an effective supplement to the existing steam flowmeter, and solve the existing steam flowmeter's poor reliability, low operating temperature, inapplicability to the measurement of small steam flow and the inability to perform flow control problem

Method used

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  • Method based on evaporation, metering and regulation of steam flow
  • Method based on evaporation, metering and regulation of steam flow
  • Method based on evaporation, metering and regulation of steam flow

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Such as figure 1 , figure 2 Shown, for NbCl 5 Evaporation, metering and adjustment of steam flow, 200g of NbCl 5 The powder is packed in the evaporation container 2, and then the evaporation container 2 is sealed and placed on an electronic balance 6 for weighing, and the total weight is 9830.91g. The sealed evaporation container 2 was installed in the heating box 1, and the electronic balance showed that the weight was 9847.83g. After using the protective gas to empty the evaporation container, turn on the display system 5 to display the flow value, the steam flow dm / dt time interval is 5s, NbCl 5 Flow plan control is 0.10g / s. Start the heating box to heat the evaporation container and the steam pipe, the temperature of the heating box with the evaporation container is set at 270°C, and the temperature of the heating box with the steam pipe is set at 270°C. The weight change of the evaporation container and the steam flow rate during the evaporation process are a...

Embodiment 2

[0042] Such as figure 1 , image 3 Shown, for TiCl 4 Evaporation, metering and adjustment of steam flow, 500g of TiCl 4 Put it into an evaporation container, then seal the evaporation container and place it on an electronic balance for weighing, the total weight is 10130.42g. The sealed evaporation container was installed in the heating box, and the electronic balance showed that the weight was 10146.03g. After using the protective gas to empty the evaporation container, turn on the display system 5 to display the flow value, the steam flow dm / dt time interval is 10s, TiCl 4 Flow plan control is 0.15g / s. Start the heating box to heat the evaporating container and the steam pipeline. The temperature of the evaporating container heating box is set at 160°C, and the temperature of the steam pipeline heating box is set at 160°C. The weight change of the evaporation container and the steam flow rate during the evaporation process are as follows: image 3 As shown, in the init...

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Abstract

The invention discloses a device and method based on evaporating, measuring and regulating steam flow. An evaporating container is arranged in a heating box, a weighing device and a display system are installed on the heating box, and the weighing device is connected with the evaporating container at the same time. It is connected with the display system, the evaporation container is connected with a steam pipeline, and one end of the steam pipeline communicates with the inside of the evaporation container, and the steam pipeline is provided with a shut-off valve, and the shut-off valve can cut off the corresponding steam pipeline. The steam flow is measured by the balance weighing method, and the steam flow is controlled by adjusting the temperature of the heating box of the evaporation container. It has good reliability, high operating temperature, is suitable for the measurement of small steam flow, and can control the steam flow and device. The advantage of simple structure can form an effective supplement to the existing steam flowmeter, and solve the problems of poor reliability, low operating temperature, inapplicability to the measurement of small steam flow and flow control in the existing steam flowmeter.

Description

technical field [0001] The invention belongs to the technical field of flow measurement and control, and in particular relates to a method based on evaporation, measurement and adjustment of steam flow. Background technique [0002] The measurement of steam flow is a key technology in the chemical industry. At present, vortex flowmeters or differential pressure flowmeters are mainly used to measure steam flow. After the evaporation is completed, the deposits generated by the high-temperature steam cooling will block and corrode the flowmeter, so the measurement accuracy will gradually decrease, which will easily cause the flowmeter to fail. The operating temperature of the steam flowmeter is generally below 350°C, and it cannot measure the steam whose evaporation temperature exceeds 350°C, and it is not suitable for the measurement of small steam flow. In addition, the steam flow meter is mainly used to measure the steam flow, and generally has no steam flow control functio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F9/00G05D7/06
CPCG01F9/003G05D7/0647
Inventor 李统业张良潘小强杨静唐明国
Owner NUCLEAR POWER INSTITUTE OF CHINA