Energy-saving type mine main ventilator diffuser

A diffuser, energy-saving technology, applied in the direction of machines/engines, mechanical equipment, liquid fuel engines, etc., can solve the problems of large loss of kinetic energy at the outlet, increase the structural resistance of the diffuser, and increase the energy consumption of the main ventilator, etc.

Inactive Publication Date: 2008-03-05
HUNAN UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

There are two main problems in these types of mine main ventilator diffusers: on the one hand, the vortex area inside the diffuser is too large, which increases the structural resistance of the diffuser and reduces the recoverable kinetic energy value of the main ventilator; On the one hand, there is a back-suction phenomenon on the inner side of the diffuser outlet section. For example, a 60-degree inclined diffuser has about 1 / 3 of the air suction area on the air outlet section, which relatively reduces the air outlet section of the diffuser. The inhaled air increases the wind speed of the effective air outlet section, and the kinetic energy loss at the outlet is large, which reduces the energy recovery efficiency of the diffuser and even increases the energy consumption of the main ventilator

Method used

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  • Energy-saving type mine main ventilator diffuser
  • Energy-saving type mine main ventilator diffuser
  • Energy-saving type mine main ventilator diffuser

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] Referring to Fig. 1, the diffuser of the present invention is a sleeve-shaped member with a square cross section, its front and rear sides are planes, its upper surface is composed of inner contour lead plane, streamlined inner contour curved surface and inner contour extension line plane, its lower The surface is composed of outer contour lead plane, streamlined outer contour curved surface and outer contour extension plane; its left end is the inlet section 7, which is perpendicular to the horizontal plane; its right end is the outlet section 8, which is parallel to the horizontal plane; the area of ​​the outlet section is larger than that of the inlet section area. It can be seen from the figure that the outer contour lead line 1, the streamlined outer contour line 2 and the outer contour extension line 3 respectively constitute the ...

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Abstract

The diffuser of mine ventilator solves the problems in existing diffusers that internal eddy current area is too large and there is back air-suction phenomenon at inner side of outlet section. The streamline type internal and external outline of the diffuser meets a specific equation and is tangent to the lead line of the external outline and the extended line of the internal and the external outline. The length of the extended line of the internal and the external outline makes the section enlargement coefficient reach 2.361. The invention can ensure that it will not produce back air-suction phenomenon at outlet section in range of 6m/s- 33m/s of inlet rated wind speed of a fan, which can ensure higher energy recovering efficiency to realize energy-saved operation of mine ventilator.

Description

technical field [0001] The invention belongs to the technical field of mine ventilation, and in particular relates to a mine main ventilator diffuser. Background technique [0002] The current mine main ventilator diffusers mainly include vertical diffusers, 60-degree inclined diffusers, 45-degree inclined improved diffusers, and traditional streamlined diffusers. There are two main problems in these types of mine main ventilator diffusers: on the one hand, the vortex area inside the diffuser is too large, which increases the structural resistance of the diffuser and reduces the recoverable kinetic energy value of the main ventilator; On the one hand, there is a back-suction phenomenon on the inner side of the diffuser outlet section. For example, a 60-degree inclined diffuser has about 1 / 3 of the air suction area on the air outlet section, which relatively reduces the air outlet section of the diffuser. The inhaled air increases the wind speed of the effective air outlet s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/54
Inventor 陈世强王海桥冯涛刘德顺刘何清刘荣华
Owner HUNAN UNIV OF SCI & TECH
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