CN212869820U

CN212869820U - Boiler flue with dust fall function

Info

Publication number: CN212869820U
Application number: CN202021542127.3U
Authority: CN
Inventors: 杨竹; 单永健
Original assignee: Harbin Hongqi Boiler Co ltd
Current assignee: Harbin Hongqi Boiler Co ltd
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2021-04-02
Anticipated expiration: 2030-07-30

Abstract

The utility model provides a boiler flue with dust fall function, belongs to boiler technical field to solve dust fall technique in the present boiler, the majority all adopts and has put the ash valve structure, and is high to the ash work requirement of operation personnel row, causes the ash easily and blocks up, the problem of reburning and destroying the ash discharge pipe. The utility model discloses a burn out section, centrifugal separation dust fall section and inertial separation dust fall section, burn out section, centrifugal separation dust fall section and inertial separation dust fall section link together and form U type passageway, and centrifugal separation dust fall section is equipped with the dust exhaust mouth. The utility model discloses from boiler furnace exhaust flue gas behind the burn-out section, make the abundant burning of carbon in the smoke and dust, get into centrifugal separation dust fall section, take place 180 turns to in this flue gas, produce centrifugal separation, separate out the large granule diameter flying dust that carries in the flue gas, subside dust exhaust mouth department at last, remove dust to the smoke and dust at last again.

Description

Boiler flue with dust fall function

Technical Field

The utility model relates to a boiler flue with dust fall function belongs to boiler technical field.

Background

The boiler can produce a large amount of smoke dust in the combustion process, and the phenomenon of dust accumulation and abrasion of the convection tube wall and overhigh initial smoke dust concentration of the boiler can be caused due to overlarge smoke dust concentration. The large amount of dust on the pipe wall hinders the heat exchange capability between the flue gas and the water through the metal pipe wall and increases the flow resistance of the flue gas, so that the exhaust gas temperature of the boiler is increased, the heat efficiency is reduced, the induced air power consumption is high, the operation cost of the boiler is increased, the service life of the boiler is shortened, the difficulty in controlling the smoke dust discharged by the boiler is increased, and the like. At present, dust falling technology in a boiler mostly adopts a structure with an ash discharge valve, has high requirements on ash discharge work of operators, and is easy to cause damages such as ash blockage, ash discharge pipe burnout after reburning and the like.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve dust fall technique in the present boiler stove, the majority has all adopted the ash valve structure of putting, and it is high to the ash work requirement of operation personnel row, causes the ash easily and blocks up, and the problem of ash pipe is put in the afterburning burning, and provides a boiler flue with dust fall function.

The utility model discloses a solve the technical scheme that above-mentioned technical problem took and be:

the utility model provides a boiler flue with dust fall function, includes burn-off section, centrifugal separation dust fall section and inertial separation dust fall section, and burn-off section, centrifugal separation dust fall section and inertial separation dust fall section link together and form U type passageway, and the centrifugal separation dust fall section is equipped with the dust exhaust mouth.

Preferably, a plurality of first heat absorption pipes which are transversely arranged are arranged in the inertial separation dust settling section.

Preferably, the centrifugal separation dust settling section is provided with a turning smoke window, and the turning smoke window consists of two columns of pipes which are arranged in a staggered mode.

Preferably, a valve is arranged at the dust exhaust port.

Preferably, the inner surface of the centrifugal separation dust settling section is provided with a refractory wear-resistant layer made of refractory castable.

Preferably, the burnout section comprises a water-cooling smoke-isolating tube panel, a radiation wall, a second heat absorption tube and a smoke inlet, the smoke inlet is communicated with a hearth of the boiler, the radiation wall is attached to the hearth of the boiler, the second heat absorption tube is arranged on the radiation wall, and the water-cooling smoke-isolating tube panel is located on one side of the inertial separation dust-settling section.

Preferably, the centrifugal separation dust settling section is shaped like a square funnel, and a dust discharge port of the centrifugal separation dust settling section is positioned on one side of the inertial separation dust settling section.

Preferably, the inner surface of the inertial separation dust settling section is formed by wrapping a first water-cooled wall tube panel, and the inertial separation dust settling section C is provided with a smoke outlet.

Compared with the prior art, the utility model following beneficial effect has:

the utility model discloses from boiler furnace exhaust flue gas behind the burn-out section, make the abundant burning of carbon in the smoke and dust, get into centrifugal separation dust fall section, take place 180 turns to in this flue gas, produce centrifugal separation, separate out the large granule diameter flying dust that carries in the flue gas, subside dust exhaust mouth department at last, remove dust to the smoke and dust at last again.

Drawings

Fig. 1 is a schematic view of the present invention;

FIG. 2 is a cross-sectional view E-E of FIG. 1;

FIG. 3 is a cross-sectional view F-F of FIG. 1;

reference numerals in the drawings: a is the burn-out section, A1 is the water-cooling smoke barrier tube screen, A2 is the radiant wall, A3 is the second heat absorption pipe, A4 is the inlet flue, B is the centrifugal separation dust fall section, B1 is the turn to cigarette window, B2 is fire-resistant wearing layer, C is the inertial separation dust fall section, B3 is the dust exhaust port, C2 is first heat absorption pipe, C1 is the exhaust port, D is furnace.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation is given, but the scope of the present invention is not limited to the following embodiments.

Example 1: as shown in FIG. 1, this embodiment a boiler flue with dust fall function, including burn-out section A, centrifugal separation dust fall section B and inertial separation dust fall section C, burn-out section A, centrifugal separation dust fall section B and inertial separation dust fall section C link together and form U type passageway, and centrifugal separation dust fall section B is equipped with dust exhaust opening B3.

Specifically, as shown in fig. 2, a plurality of first heat absorption pipes C2 arranged transversely are arranged in the inertial separation dust settling section C, and play a role of blocking smoke dust.

Optionally, as shown in fig. 3, the centrifugal separation dustfall section B is provided with a turning smoke window B1, and the turning smoke window B1 is composed of two columns of pipes arranged in a staggered manner, so that smoke can flow into the inertial separation dustfall section C more stably to achieve a flow stabilizing effect.

The dust exhaust port B3 is provided with a valve to prevent the flue gas from leaking and to facilitate the removal of the smoke dust in the flue.

Specifically, centrifugal separation dust fall section B internal surface is equipped with the fire-resistant wearing layer B2 made by the refractory castable, and the flue gas passes through centrifugal separation dust fall section B, through 180 entering inertial separation dust fall section C, and the flue gas can increase wearing and tearing through centrifugal separation dust fall section B internal surface, and the flue gas is after burn-off section A simultaneously, and the temperature is higher, consequently increases fire-resistant wearing layer B2 and improves the wearability and the high temperature resistance of centrifugal separation dust fall section B internal surface to improve life.

The burnout section A comprises a water-cooling smoke-isolating tube panel A1, a radiation wall A2, a second heat-absorbing tube A3 and a smoke inlet A4, the smoke inlet A4 is communicated with a hearth D of the boiler, the radiation wall A2 is attached to the hearth D of the boiler, the radiation wall A2 is provided with the second heat-absorbing tube A3, and the water-cooling smoke-isolating tube panel A1 is located on one side of the inertial separation dust-settling section C.

The centrifugal separation dust settling section B is in a square funnel shape, and a dust discharge port B3 of the centrifugal separation dust settling section B is positioned on one side of the inertial separation dust settling section C. The bottom surface of the centrifugal separation dust settling section B is obliquely arranged and is arranged opposite to the burnout section A, so that the flue gas can fall on the bottom surface of the centrifugal separation dust settling section B under the action of inertia after turning by 180 degrees.

The inner surface of the inertial separation dust settling section C is formed by coating a first water-cooled wall tube panel, and the inertial separation dust settling section C is provided with a smoke outlet C1.

The working process is as follows: the flue gas that follow furnace D discharged contains carbon, enters into burnout section A in, and furnace D's heat transmits burnout section A through radiant wall A2, makes the flue gas complete combustion, and the heat that the burning produced is absorbed the back by second heat absorption pipe A3, through centrifugal separation dust fall section B, and the flue gas turns to, because inertial action, the great smoke and dust of granule falls into centrifugal separation dust fall section B under the action of gravity in. The smaller particulate smoke dust passes through the inertia separation dust fall section C, and the blocking of a plurality of transversely arranged first heat absorption pipes C2 in the inertia separation dust fall section C enables the smoke dust to fall into the centrifugal separation dust fall section B, and simultaneously the first heat absorption pipes C2 further absorb heat to reduce the temperature of the smoke gas, and finally the smoke gas is discharged from a smoke outlet C1.

The above description is only the preferred embodiments of the present invention, and these embodiments are all based on the present invention, and the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a boiler flue with dust fall function which characterized in that: the device comprises a burnout section (A), a centrifugal separation dust-settling section (B) and an inertial separation dust-settling section (C), wherein the burnout section (A), the centrifugal separation dust-settling section (B) and the inertial separation dust-settling section (C) are connected together to form a U-shaped channel, and the centrifugal separation dust-settling section (B) is provided with a dust discharge port (B3).

2. The boiler flue with the dust fall function according to claim 1, characterized in that: a plurality of first heat absorption pipes (C2) which are transversely arranged are arranged in the inertial separation dust settling section (C).

3. The boiler flue with the dust fall function according to claim 1, characterized in that: the centrifugal separation dust settling section (B) is provided with a turning smoke window (B1), and the turning smoke window (B1) consists of two rows of pipes which are arranged in a staggered mode.

4. The boiler flue with the dust fall function according to claim 1, characterized in that: a valve is arranged at the dust exhaust port (B3).

5. The boiler flue with the dust fall function according to claim 1, characterized in that: the inner surface of the centrifugal separation dust settling section (B) is provided with a fireproof wear-resistant layer (B2) made of fireproof casting materials.

6. The boiler flue with the dust fall function according to claim 1, characterized in that: the burnout section (A) comprises a water-cooling smoke-isolating tube panel (A1), a radiation wall (A2), a second heat absorption tube (A3) and a smoke inlet (A4), the smoke inlet (A4) is communicated with a hearth (D) of the boiler, the radiation wall (A2) is attached to the hearth (D) of the boiler, the radiation wall (A2) is provided with the second heat absorption tube (A3), and the water-cooling smoke-isolating tube panel (A1) is located on one side of the inertial separation dust-settling section (C).

7. The boiler flue with the dust fall function according to claim 1, characterized in that: the centrifugal separation dust settling section (B) is in a square funnel shape, and a dust discharge port (B3) of the centrifugal separation dust settling section (B) is positioned on one side of the inertial separation dust settling section (C).

8. The boiler flue with the dust fall function according to claim 1, characterized in that: the inner surface of the inertial separation dust settling section (C) is formed by coating a first water wall tube panel, and the inertial separation dust settling section (C) is provided with a smoke outlet (C1).