Steam dryness modulating system

A modulation system and steam technology, applied in the control/regulation system, humidity control, tobacco preparation, etc., can solve the problems of unstable control, unstable steam moisture content, physical quality and sensory quality that do not meet the requirements of process standards, etc. Achieve the effects of reducing raw material consumption and energy consumption in the process, improving equipment operation efficiency and stability, and improving product quality and stability

Active Publication Date: 2016-12-14
ZHENGZHOU TOBACCO RES INST OF CNTC +2
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AI Technical Summary

Problems solved by technology

The moisture content of the steam is unstable. For the operating conditions of the equipment, it will cause safety problems such as ineffective utilization of equipment efficiency, unstable control, and water hammer; for product quality, it will increase process consumption. Many problems such as physical quality and sensory quality do not meet the requirements of process standards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] like image 3 As shown, the passage is composed of branch Ⅰ and branch Ⅱ. The main purpose is to reduce the dryness of the steam. Part of the steam from the steam generator is desuperheated and humidified through the desuperheater, and the other part directly leads to the gas collecting tank and The steam from the desuperheater is combined. The steam coming out of the gas collecting tank is first measured by the dryness meter, and then enters the steam using equipment.

Embodiment 2

[0025] like Figure 4 As shown, the passage is composed of branch Ⅰ and branch Ⅲ, the main purpose is to increase the dryness of the steam, part of the steam enters the steam-water separator to increase the dryness of the steam, and is combined with the steam from the steam generator in the gas collecting tank. confluence. The steam coming out of the gas collecting tank is first measured by the dryness meter, and then enters the steam using equipment.

[0026] Through the selection of various equipment, pipes, pipe fittings and valves of the pipeline steam dryness regulation and measurement system, a detailed pipeline steam dryness modulation measurement system has been established, such as figure 1 shown. The system is composed of steam generator, desuperheater, steam-water separator, gas collecting tank, dryness meter, signal controller and supporting steam pipeline.

[0027] The detection and effective control of steam dryness can be realized through the above technical ...

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Abstract

A steam dryness modulating system comprises a steam generator, a gas collecting tank and three branches connected between the steam generator and the gas collecting tank in parallel, wherein the steam generator in the branch I is directly connected with the gas collecting tank to be in a normally opened state, a humidifying device is arranged in the branch II, a dehumidification device is arranged in the branch III, and a gas outlet pipe of the gas collecting tank is connected with a gas using device and is provided with a dryness meter. The steam dryness modulating system is characterized in that the steam of the branches converge in the gas collecting tank, the branch II and the branch III are switched according to a steam dryness value actually measured by the dryness meter, the steam leading amount is adjusted through a valve, and dry and wet steam mixing of different proportions can be achieved. In addition, automatic detection and control of steam dryness can be achieved by adding a signal controller. The united online pipeline steam dryness meter is applied to the system, and online real-time detection of the steam quality of the key working section of a tobacco shred production line can be achieved. Good steam quality can not only guarantee the tobacco shred processing quality, but also improve the energy utilization rate, and the service life of the valve and the device can be effectively prolonged.

Description

technical field [0001] The invention relates to steam detection and control, in particular to a steam dryness modulation system, which can realize the online detection and control of the steam dryness of pipelines on a silk production line. Background technique [0002] As an important clean energy, steam is widely used in industrial production and daily life. Saturated steam is widely used as the processing medium in the tobacco shred process, and the normal operation of the production line equipment, product quality and steam quality have a great relationship. Steam dryness is the mass percentage of dry saturated steam per kilogram of wet saturated steam. Saturated steam dryness is an important parameter to measure steam quality. Different processes require different steam dryness. In the cut leaf drum drying process, saturated steam is used as the heat supply medium, and the cylinder wall and hot air are heated through the heat exchange between the partition walls to pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D27/02G05D22/02A24B3/00
CPCA24B3/00G05D22/02G05D27/02
Inventor 张大波吴玉生邓国栋罗靖秦晓柯周跃飞王永庆古新
Owner ZHENGZHOU TOBACCO RES INST OF CNTC
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