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Multi-nozzle and multi-channel heater of steam-water two phase flow mixed type

A heater, multi-channel technology, used in direct contact heat exchangers, heat exchanger types, lighting and heating equipment, etc., can solve problems such as high noise, water hammer, and inability to meet requirements

Inactive Publication Date: 2011-08-31
王汝武
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, problems often occur in the operation of the product, such as water hammer, loud noise, vibration, etc.
Especially those with a flow rate greater than 300t / h are more prone to problems, so the maximum flow rate of a single unit of this type of product does not exceed 300t / h. For large-scale central heating systems, the raw water heating systems of large power plants often cannot meet the requirements

Method used

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  • Multi-nozzle and multi-channel heater of steam-water two phase flow mixed type
  • Multi-nozzle and multi-channel heater of steam-water two phase flow mixed type
  • Multi-nozzle and multi-channel heater of steam-water two phase flow mixed type

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Effect test

Embodiment 1

[0017] Such as figure 1 As shown, the multi-nozzle multi-channel steam-water two-phase flow hybrid heater of the present invention is a two-phase heater with steam injection and water, and the steam is injected by the nozzle to inhale water for heating. It consists of a channel and a heater housing 4, there are 2 channels, and each channel is composed of a steam inlet 1, a nozzle 2 and a mixing tube 3. The steam inlet 1 and the mixing pipe 3 are connected into an integral structure through an elbow.

[0018] When the working condition of the two-phase heater with steam injection and water changes, the outlet temperature changes. At this time, the steam flow needs to be adjusted according to the temperature change. The change of the steam flow is realized by the multi-channel steam regulating valve. The multi-channel steam regulating valve is in the adjustment process. Only changing the opening of one steam channel does not affect the working conditions of other channels, so t...

Embodiment 2

[0021] Such as figure 1 As shown, the multi-nozzle multi-channel steam-water two-phase flow hybrid heater of the present invention is a two-phase heater with water jet and steam, and the water is sprayed by the nozzle to inhale the steam for heating. It consists of a channel and a heater housing 4, there are 2 channels, and each channel is composed of a steam inlet 1, a nozzle 2 and a mixing tube 3. The steam inlet 1 is in communication with the mixing tube 3, and the steam inlet 1 and the mixing tube 3 are of separate structures.

[0022] There may also be 5, 7 or 10 channels described in this embodiment.

[0023] For the two-phase flow heater with water jet and steam, in order to keep the outlet hot water pressure and temperature stable, it is necessary to adjust the opening of the water nozzle and the steam regulating valve at the same time. The water nozzle regulating valve and the steam regulating valve are multi-channel regulating valves. Individual channels can be clo...

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Abstract

The present invention discloses a heater, especially discloses a multi-nozzle and multi-channel heater of a steam-water two phase flow mixed type. The multi-nozzle and multi-channel heater of the steam-water two phase flow mixed type comprises a heater shell (4) and a plurality of channels, wherein each channel comprises a steam inlet (1), a nozzle (2) and a mixing tube (3). The heater provided in the invention reduces the flow rate of each channel, thereby decreasing the noise of steam-water mixing, and can close an individual channel without influencing the hydraulic operating condition of other channels when load reduces, being able to work steadily and enlarge the changing scope of heater operating condition and maintain steam bubble rate and slip speed changeless, thereby solving the problem of water hammer.

Description

technical field [0001] The invention relates to a heater, in particular to a multi-nozzle multi-channel steam-water two-phase flow hybrid heater. Background technique [0002] In many fields of industry and life, steam-water mixed heaters are needed. Steam-water mixed heaters are two-phase flow hybrid heaters, which are directly mixed with liquid and gas. Direct mixing of liquid and gas is a complex heat transfer and Mass transfer problem. The law of this process cannot be solved mathematically at present, and the design of this type of product is based on the data given by the experience of those skilled in the art. Therefore, problems often occur in the operation of the product, such as water hammer, loud noise, vibration, etc. Especially those with a flow rate greater than 300t / h are more prone to problems, so the maximum flow rate of a single unit of this type of product does not exceed 300t / h. For large-scale central heating systems, the raw water heating systems of l...

Claims

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Application Information

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IPC IPC(8): F28C3/08
Inventor 王汝武
Owner 王汝武
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