CN203586239U

CN203586239U - Improved structure of chimney

Info

Publication number: CN203586239U
Application number: CN201320822285.8U
Authority: CN
Inventors: 倪正林; 倪鸣
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-12-16
Filing date: 2013-12-16
Publication date: 2014-05-07
Anticipated expiration: 2023-12-16

Abstract

The utility model discloses an improved structure of a chimney, which comprises a chimney body, wherein the chimney body is tapered, an opening is formed in the top of the chimney body, a sealing cover is mounted at the top of the chimney body, at least one horizontal pipe is arranged on the side wall of the chimney body, the tail end of the horizontal pipe is connected with an exhaust pipe, the two ends of the exhaust pipe are opened, and the internal cavity of the exhaust pipe are communicated with the internal passage of the chimney body through the horizontal pipe. According to the utility model, when the flowing direction of air near the exhaust pipe is in the horizontal direction, negative pressure can be produced during the flowing process, air inside the exhaust pipe is drawn by the negative pressure, so as to play the effects of an exhaust fan, the use of an air blower can be reduced in any directions/at any temperatures/under any speeds of natural wind force. Therefore, natural and sufficient burning of combustion machines such as boilers and the like can be achieved, and the purposes of lowering fuel consumption and smoke exhaust power dissipation is achieved.

Description

A kind of improvement structure of chimney

Technical field

The utility model relates to the chimney in a kind of industrial production, specifically refers to a kind of improvement structure of chimney.

Background technology

Chimney is one of the most ancient, most important environmental control system.The invention utmost point of chimney early.When primitive man finds fire, found such reason: where where is it fire, must have cigarette simultaneously.Chimney is the earliest indoor passage.When " fire " brought into indoor when cooking and warming oneself cigarette also enter thereupon.This just forces people to have to manage on roof and wall, open a little passages, with this, drives away smog within doors.This method has retained hundreds of thousands year as a kind of human practice activity of standard.The mankind had once spent long time to improve smokestack.Past, academia generally believed: cradle Egypt and the Mesopotamia warmer climate of human civilization, thereby family's heating does not also just become a urgent problem.Finally, when a French investigation team announces that they excavate huge city, ruins Mali in Euphrates upstream, found a palace that approximately has history in 4000 that is being equipped with many chimneys.Thereby above-mentioned viewpoint is changed.Really, Roman, when the hot gas heating system of development design novelty, has also improved chimney widely.But popular viewpoint is still thought at present, and " chimney " this indignant thought is by Syrian, Egyptian and the businessman of Jew, to introduce eastwardly West Europe before more than 1200 year.At present, the highest single-cylinder type reinforced concrete chimney of China is 210 meters.The most much higher cartridge type reinforced concrete chimney is four cartridge type chimneys of 212 meters high of Qinling Power Plant.Now built height surpasses the chimney of 300 meters and reaches tens of seats in the world, and for example the single-cylinder type reinforced concrete chimney in Michele power station is up to 368 meters.

The height of the large-scale chimney of prior art is generally in the time of 120 meters, the diameter of its outlet flue mostly is 2.5 meters, the cross-sectional area of its outlet of chimney is about 49084 square centimeters, in use all there is a problem in such chimney: the cigarette effect of pulling out of chimney is that the Air Flow by chimney opening part forms, but the horizontal motion of air has the effect of pulling out cigarette, but when air carries out upper and lower perpendicular flow, when particularly winter air moves downward, can form a very large downward pressure to the air-flow in chimney, the existence of this power improves the smoke evacuation difficulty of chimney, in order to overcome the effect of this power, often need the blower fan that configuration is very large, consumed a large amount of energy.

Utility model content

The purpose of this utility model is to provide a kind of improvement structure of chimney, makes under various conditions, and any flowing of air all becomes the power of chimney, reaches the object that reduces smoke evacuation power consumption.

The purpose of this utility model is achieved through the following technical solutions:

A kind of improvement structure of chimney, comprise chimney body, chimney body has tapering, its open top, top at chimney body is provided with closing cap, is at least provided with a horizontal tube on the sidewall of chimney body, at the end of horizontal tube, is connected with smoke exhaust pipe, the both ends open of smoke exhaust pipe, its internal cavities is communicated with the inner passage of chimney body by horizontal tube.The utility model is the improvement that existing chimney is made, its main body is chimney body, chimney body has certain tapering, internal cavities is as the runner of flue gas, improvements of the present utility model are that the open top of chimney body is installed to closing cap, make closing cap that the openend sealing of chimney body is formed to closed cavity, then a plurality of horizontal tubes are set on the sidewall of chimney body, the position of horizontal tube is near closing cap, the end of horizontal tube connects a smoke exhaust pipe, smoke exhaust pipe is vertical with horizontal tube, it is cylindric that smoke exhaust pipe is, its both ends open, the internal cavities of smoke exhaust pipe is communicated with by the cavity of horizontal tube and the internal cavities of chimney body, in use, near air-flow direction smoke exhaust pipe is horizontal direction, vertical exhaust opening has been eliminated the downward active force of atmosphere to exhaust opening, in flow process, produce negative pressure, this negative pressure is by the air drawing in smoke exhaust pipe, play the effect of air exhauster, when near air-flow direction smoke exhaust pipe is from the bottom up or from top to bottom time, air-flow forms negative pressure through smoke exhaust pipe, negative pressure siphons away the flue gas in horizontal tube, play the guiding function of air exhauster to flue gas, in prior art, when air flow for vertical direction time need to rely on air blast to provide power that flue gas is got rid of mode, chimney structure of the present utility model can convert the air motion of any direction to the guiding function power to flue gas, the in the situation that of any air current flow direction, can reduce the use of air blast, thereby reach the object that reduces smoke evacuation power consumption.

Described closing cap comprise inner housing, shell body and be filled in inner housing and shell body between heat-insulation layer.In order to improve the diffusivity of flue gas, the utility model adopts the closing cap of insulation construction, can keep the temperature of flue gas, makes it higher than extraneous air themperature, utilizes the principle of expanding with heat and contract with cold, and hot-air expands and can form negative pressure, is more beneficial to the discharge of flue gas.

Described shell body and inner housing all adopt corrosion resistant stainless steel to make.In order to improve the service life of closing cap, can adopt corrosion resistant stainless steel to make shell body, can adapt to the acid rain environment in high-altitude, reach corrosion-resistant object.

The diameter of described smoke exhaust pipe is less than or equal to the diameter of horizontal tube.In order to accelerate the flowing velocity of flue gas, employing is from the diminishing mode of flow diameter of chimney body inside, object is to increase pressure, horizontal tube diameter is greater than or equal to the mode of smoke exhaust pipe diameter, can form pressure difference, improve the gas flow rate of discharging, further form negative pressure, the guiding that is beneficial to flue gas is extracted.

The ratio of the length of described smoke exhaust pipe and the diameter of horizontal tube is 2.5～3.Through the long-term research of applicant, find, when the length of smoke exhaust pipe is 2.5～3 times of horizontal tube diameter, the air-flow that flue gas forms is comparatively stable, and the recruitment of flow velocity and the negative pressure amount producing are also more reasonable, suitable being widely used.

The utility model compared with prior art, has following advantage and beneficial effect:

The improvement structure of a kind of chimney of 1 the utility model, the end of horizontal tube connects a smoke exhaust pipe, smoke exhaust pipe is vertical with horizontal tube, it is cylindric that smoke exhaust pipe is, its both ends open, the internal cavities of smoke exhaust pipe is communicated with by the cavity of horizontal tube and the internal cavities of chimney body, in use, near air-flow direction smoke exhaust pipe is horizontal direction, in flow process, produce negative pressure, this negative pressure is by the air drawing in smoke exhaust pipe, play the effect of smoke evacuation, when near air-flow direction smoke exhaust pipe is from the bottom up or from top to bottom time, air-flow forms negative pressure through smoke exhaust pipe, negative pressure siphons away the flue gas in horizontal tube, play the guiding function to flue gas, in prior art, when air flow for vertical direction time need to rely on air blast to provide power that flue gas is got rid of mode, chimney structure of the present utility model can effectively utilize the natural wind of any direction/arbitrary temp/arbitrary speed, in the situation of the natural wind of in any direction/arbitrary temp/arbitrary speed, can reduce the use of air blast, thereby realize naturally fully burning of the combustion tools such as boiler, reach the object that reduces fuel consumption and smoke evacuation power consumption,

The improvement structure of a kind of chimney of 2 the utility model, adopts the closing cap of insulation construction, can keep the temperature of flue gas, makes it higher than extraneous air themperature, utilizes the principle of expanding with heat and contract with cold, and hot-air expands and can form negative pressure, is more beneficial to the discharge of flue gas;

The improvement structure of a kind of chimney of 3 the utility model, adopts the diminishing mode of flow diameter from chimney body inside, and horizontal tube diameter is greater than the mode of smoke exhaust pipe diameter, can form the acceleration of air-flow, improve the gas flow rate of discharging, further form negative pressure, the guiding that is beneficial to flue gas is extracted.

Accompanying drawing explanation

Accompanying drawing described herein is used to provide the further understanding to the utility model embodiment, forms the application's a part, does not form the restriction to the utility model embodiment.In the accompanying drawings:

Fig. 1 is the utility model structural representation;

Fig. 2 is the structural representation that partly cuts open of the present utility model.

Mark and corresponding parts title in accompanying drawing:

1-chimney body, 2-horizontal tube, 3-smoke exhaust pipe, 4-inner housing, 5-shell body, 6-heat-insulation layer.

The specific embodiment

For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, exemplary embodiment of the present utility model and explanation thereof are only for explaining the utility model, and conduct is not to restriction of the present utility model.

Embodiment

As shown in Fig. 1 to 2, the improvement structure of a kind of chimney of the utility model, comprise chimney body 1, chimney body 1 has certain tapering, internal cavities is as the runner of flue gas, closing cap is installed in open top at chimney body 1, the diameter of closing cap is 2.5m, closing cap forms closed cavity by the openend sealing of chimney body 1, closing cap comprises inner housing 4, shell body 5, and be filled in the heat-insulation layer 6 between inner housing 4 and shell body 5, closing cap is insulation construction, four horizontal tubes 2 are set on the sidewall of chimney body 1, the quantity of horizontal tube 2 can be chosen arbitrarily, the diameter of horizontal tube 2 can be determined arbitrarily, the length of horizontal tube 2 is determined arbitrarily, four horizontal tubes 2 are evenly distributed on the sidewall of chimney body 1, and vertical with the axis of chimney body 1, the position of horizontal tube 2 is near closing cap, the end of horizontal tube 2 connects a smoke exhaust pipe 3, the diameter of smoke exhaust pipe 3 is the diameter that is less than or equal to horizontal tube 2, the length of smoke exhaust pipe 3 equals 2.5～3 times of diameter of horizontal tube 2, smoke exhaust pipe 3 is vertical with horizontal tube 2, smoke exhaust pipe 3 is cylindric, its both ends open is parallel with the axis of chimney body 1, the internal cavities of smoke exhaust pipe 3 is communicated with the internal cavities of chimney body 1 by the cavity of horizontal tube 2.

The above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only the specific embodiment of the present utility model; and be not used in and limit protection domain of the present utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims

1. the improvement structure of a chimney, comprise chimney body (1), chimney body (1) has tapering, its open top, it is characterized in that: the top at chimney body (1) is provided with closing cap, on the sidewall of chimney body (1), be at least provided with a horizontal tube (2), at the end of horizontal tube (2), be connected with smoke exhaust pipe (3), the both ends open of smoke exhaust pipe (3), its internal cavities is communicated with the inner passage of chimney body (1) by horizontal tube (2).

2. the improvement structure of a kind of chimney according to claim 1, is characterized in that: described closing cap comprise inner housing (4), shell body (5) and be filled in inner housing (4) and shell body (5) between heat-insulation layer (6).

3. the improvement structure of a kind of chimney according to claim 2, is characterized in that: described shell body (5) all adopts corrosion resistant stainless steel to make with inner housing (4).

4. according to the improvement structure of a kind of chimney described in any one in claims 1 to 3, it is characterized in that: the diameter of described smoke exhaust pipe (3) is less than or equal to the diameter of horizontal tube (2).

5. according to the improvement structure of a kind of chimney described in any one in claims 1 to 3, it is characterized in that: the ratio of the diameter of the length of described smoke exhaust pipe (3) and horizontal tube (2) is 2.5～3.