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Ventilating current equalizer

A technology of flow equalizer and ventilation duct, which is applied in the field of ducts with uniform outflow or uniform inhalation, can solve the problems of error, inability to achieve uniform airflow at the tuyere, and inability to achieve uniform air supply and exhaust, and achieves easy construction and installation, simple structure, low cost effect

Active Publication Date: 2010-01-20
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current uniform air supply and exhaust methods objectively have inevitable errors in design calculations and on-site construction; at the same time, there are obvious defects that only maintain the "equal" airflow through the tuyere, but cannot truly achieve uniform airflow through the tuyere.
The implementation effect of the existing method is not ideal in terms of uniform air supply and exhaust, and when the distance of uniform air supply or exhaust is required to reach a certain length, the purpose of uniform air supply and exhaust will not be achieved

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0021] like figure 1 As shown, the ventilation duct 1 is an air supply duct, and the windward section on the tuyere 2 faces the starting end 3 of the duct. The projected area of ​​the windward section of the tuyeres 2 arranged in sequence according to the starting end 3 on the cross section of the air supply duct 1 increases successively, that is, the included wind inlet angle 4 decreases successively. Each tuyere 2 intercepts the dynamic pressure in the pipe through the adjustment of the air inlet angle 4 to make up for the shortage of the outlet pressure of the tuyere until the actual demand of the outlet air volume of the tuyere is met.

[0022] like figure 2 As shown, the ventilation duct 1 is an exhaust duct, and the windward section on the tuyeres 2 faces away from the starting end 3 of the duct, and the projected areas of the windward sections on the tuyeres 2 arranged in sequence according to the starting end 3 on the section of the air supply duct 1 decrease success...

Embodiment 2

[0025] like Figure 5 and Image 6 As shown, it is another improved embodiment of the present invention. The ventilation duct 1 is a uniform air supply duct, and the tuyere 2 rotates in the axial direction of itself, and sequentially adjusts the air inlet angle 4 between its windward section and the duct section from the starting end 3 Increase in turn, change the size of the dynamic pressure in the interception pipe, and keep each air outlet to obtain the same pressure, so as to achieve uniform flow out of the uniform air supply pipe. When the ventilation duct 1 is an exhaust duct, such as Figure 7 As shown, the angle 4 between the windward section and the duct section is sequentially adjusted from the starting end 3 to successively decrease, so as to realize the uniform suction of the uniform exhaust duct.

[0026] In order to facilitate the adjustment of the air inlet angle 4 of each tuyere 2, the tuyere 2 is a complete 90° circular duct elbow, and its structure and inst...

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Abstract

This invention discloses a air supplying and discharging pipeline, especially an evenly absorbing and discharging pipeline that is adequate for long distance air supplying and discharging pipeline. It includes a simple and convenient ventilation flow equalizer, which is composed of several air ports arranged on the ventilation pipeline. The projecting area of the air port windward sections on air supplying pipeline section are increased or decreased successively. The flow rate and pressure of air port can be adjusted according to the position of air port, in order to realize evenly discharging or absorbing of the air supplying pipeline. This invention is easy to assemble too.

Description

technical field [0001] The invention relates to an exhaust duct, especially a duct suitable for uniform outflow or uniform suction in long-distance exhaust ducts. Background technique [0002] In the uniform air supply and exhaust duct, as the duct diverges due to the air supply or the confluence of the suction and exhaust air, and the distance changes, the pressure inside the air duct changes accordingly. Therefore, necessary measures are required to maintain the same flow rate for each tuyere from the beginning to the end of the air duct. [0003] In order to ensure that the flow rate of each air outlet is the same and achieve the purpose of uniform flow, the current method used is: for the air supply duct, one is to design the air supply duct as a variable cross-section air duct, and the other is to keep the cross section of the air supply duct unchanged. Change the area of ​​the air outlet; for the exhaust duct, the only way to achieve the purpose of inhaling the same a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F13/065
Inventor 钟星灿
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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