CN201145268Y - Funnel cap for preventing vent hole from being blocked - Google Patents

Abstract

The utility model discloses a wind cap for preventing a windhole from being blocked. The windhole on a wind cap body is made into a hole expanding from inside to outside. The wind cap is used in a burning device of a thermoelectric boiler fluidized bed; as wind blows outwards, cinder and other particles move outwards; compared with a straight hole, the resistance of the outward distent hole is smaller, and the cinder and the other particles can be blown out the windhole in order that the windhole is not blocked. All the windholes are smooth and wind distribution is even, thereby stabilizing the boiler burning, reducing the abrasion and failure of local wind caps or the local part of a single wind cap in a boiler hearth, prolonging the life span of the whole boiler wind cap and ensuring the normal power consumption of a blower.

Description

Prevent to stop up the blast cap of the eye of wind

Affiliated technical field

This is suitable for the novel part that relates in a kind of thermoelectric fluidized bed boiler burning device is blast cap, especially can prevent to stop up the blast cap of the eye of wind.

Background technology:

Blast cap in the thermoelectric fluidized bed boiler burning device, its structure is that the inner chamber of housing is communicated with burner hearth by the eye of wind.Wind at first enters inner chamber is blowed to burning again by the eye of wind coal, makes coal be the burning of boiling shape.Open or used blast cap in the prior art, as " operation of CFBB equipment " book that China Electric Power Publishing House publishes in January, 2006, the blast cap of several forms of proposition, its blast cap eye of wind all is a straight hole.The shortcoming of this straight hole eye of wind is a cinder and other particles can enter the eye of wind and the eye of wind is partly stopped up in combustion process; then the eye of wind ventilation of stopping up reduces even ventilation; not blocked eye of wind ventilation increases; the blast cap of ventilation general goal wearing and tearing aggravation and ignition temperature height make herein the blast cap excessive wear and premature failure.Cloth wind is inhomogeneous to worsen boiler combustion because of the obstruction of the eye of wind has caused.The eye of wind stops up when serious, also can cause the too high air blast power consumption that makes of air compartment blast to increase.

Summary of the invention

In order to overcome above-mentioned deficiency, the utility model provides a kind of design of the blast cap eye of wind, makes the blast cap eye of wind can be not blocked.

The technical scheme that its technical problem that solves the utility model adopts is: the blast cap eye of wind is designed to inner small and outside big flaring opens hole shape, like this after particles such as cinder enter the eye of wind, under the distinguished and admirable effect of outwards moving, because the flaring hole is much smaller to the resistance ratios straight hole of movement of particles, and make it be blown the eye of wind, overcome eye of wind obstruction.

The beneficial effects of the utility model are: the unimpeded then cloth of all eyes of wind wind is even, makes the air compartment blast stable, and boiler combustion is stable, reduces local blast cap or single blast cap concentrated wear inefficacy in the burner hearth, makes the air blast power consumption normal.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified

Fig. 1 is the cutaway view of pinhole type blast cap

Fig. 2 is the cutaway view of bell-jar blast cap

1. blast cap bodies among the figure, the 2. eye of wind, 3. wind, 4. particle such as cinder.

The specific embodiment

In Fig. 1 embodiment, the eye of wind 2 of aperture formula blast cap body 1 has been designed to the inner small and outside big hole shape of expansion gradually.In Fig. 2 embodiment, the eye of wind 2 of bell-jar blast cap body 1 has been designed to the inner small and outside big hole shape of expansion gradually.When particles such as cinder 4 enter in the eye of wind 2 or the blast cap inner chamber, because wind 3 is to blow from inside to outside, these particles 4 can outwards move by the eye of wind 2, because the eye of wind 2 is hole shapes of expanding gradually from inside to outside, so the resistance of motion of particle 4 is very little, wind can blow out the eye of wind 2 with particle 4, makes the eye of wind 2 can be not blocked.

Claims (1)

1. a blast cap that prevents to stop up the eye of wind is offered the eye of wind (2) at blast cap body (1), it is characterized in that the hole shape that the eye of wind (2) is designed to expand gradually from inside to outside.

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