CN213872659U

CN213872659U - Coal/gas dual-purpose normal-pressure three-return-stroke vertical fire-tube direct heating furnace

Info

Publication number: CN213872659U
Application number: CN202022568808.3U
Authority: CN
Inventors: 李新利; 李进; 李鹏; 杨淑丹
Original assignee: Xi'an Tianli Energy Saving And Environmental Equipment Co ltd
Current assignee: Xi'an Xinbaifeng Environmental Protection Equipment Co ltd
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-08-03
Anticipated expiration: 2030-11-09

Abstract

The utility model discloses a vertical fire section of thick bamboo direct heating furnace of dual-purpose ordinary pressure three return strokes of coal gas, including boiler shell, boiler inner bag, three return strokes firetubes of group, collection smoke box, chimney, accent cigarette board, combustor, boiler inner bag, three return strokes firetubes of group, collection smoke box from the bottom up set gradually on boiler shell's center axis, the chimney sets up the upside at collection smoke box and extend to boiler shell's outside, boiler inner bag side sets up the combustor, set up furnace gate, main burner, mother's fire on the combustor respectively, transfer the cigarette board setting on the chimney. The utility model discloses can improve heat transfer efficiency greatly, the best heat transfer effect has been ensured to the chimney of boiler inner furnace, three return strokes firetubes of group and flanged in the combined boiler, and the oxygen corrosion can not take place in the heat transfer of ordinary pressure low temperature.

Description

Coal/gas dual-purpose normal-pressure three-return-stroke vertical fire-tube direct heating furnace

Technical Field

The utility model belongs to the technical field of the heating furnace, concretely relates to vertical fire section of thick bamboo direct heating furnace of dual-purpose ordinary pressure three return strokes of coal gas.

Background

The vertical heating furnace is suitable for various industrial fields such as hotels, schools, shopping malls, industrial parks, bathing, saunas, office buildings, oil field enterprises and public institutions for central hot water supply or central heating, oil field crude oil heating and the like.

The traditional normal-pressure vertical heating furnace is old in design, is not improved for many years, does not consider the problems of fuel saving and environmental protection, has low combustion efficiency, pollutes the environment, has short retention time of high-temperature smoke and fire in the furnace, insufficient heat exchange, high exhaust temperature of the heating furnace, old furnace body structure and large volume, does not design according to an equal-strength concept, has large deformation, short service life and unsafety, causes great manpower and material waste, and also influences the normal production process.

SUMMERY OF THE UTILITY MODEL

In view of this, the main object of the present invention is to provide a coal/gas dual-purpose normal-pressure three-return vertical direct-fired furnace.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the embodiment of the utility model provides a vertical fire section of thick bamboo direct heating furnace of dual-purpose ordinary pressure of coal gas three return strokes, including boiler shell, boiler inner bag, three return strokes firetubes of group, collection smoke box, chimney, accent cigarette board, combustor, boiler inner bag, three return strokes firetubes of group, collection smoke box from the bottom up set gradually on the center axis of boiler shell, the chimney sets up the upside at collection smoke box and extend to boiler shell's outside, boiler inner bag side sets up the combustor, set up furnace gate, main burner, female fire on the combustor respectively, transfer the cigarette board setting on the chimney.

In the above scheme, the upper end and the lower end of the boiler shell are respectively provided with the top plate and the bottom plate, the bottom of the boiler liner is connected with the bottom plate, the plate is provided with the fire grate, one end of the chimney is communicated with the smoke collection box through the sealing plate, and the other end of the chimney penetrates through the top plate and is connected with the flange.

In the above scheme, one end of the three return fire tubes is connected with the boiler liner through the sealing plate, and the other end of the three return fire tubes is connected with the smoke collection box through the connecting plate.

In the above scheme, the three return fire tubes consist of connecting tubes and elbows.

In the above scheme, the boiler inner container is wound with the inner container water pipe.

In the above scheme, one side of the boiler shell is provided with a drain outlet, a water replenishing port and an overflow port, the other side of the boiler shell is provided with a hot water return port and a hot water outlet, and the top plate is provided with a vent hole.

In the above scheme, the upper part of the boiler shell is respectively provided with the first liquid level meter and the second liquid level meter, and the lower part of the boiler shell is provided with the thermometer.

Compared with the prior art, the utility model discloses can improve heat transfer efficiency greatly, best heat transfer effect has been ensured to combined boiler inner furnace, three return strokes firetubes of group and flanged chimney, and the oxygen corrosion can not take place for the ordinary pressure low temperature heat transfer.

Drawings

FIG. 1 is a schematic structural view of a coal/gas dual-purpose atmospheric three-return vertical fire-tube direct heating furnace of the present invention;

FIG. 2 is a side view of the dual-purpose atmospheric three-pass vertical direct fire-tube heating furnace of the present invention;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

fig. 4 is a schematic structural view of three return fire tubes in the dual-purpose atmospheric three-return vertical fire tube direct heating of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The embodiment of the utility model provides a vertical fire section of thick bamboo direct heating furnace of dual-purpose ordinary pressure three return strokes of coal gas, as shown in fig. 1-4, including boiler casing 1, boiler inner bag 2, three return strokes firetubes 3 of group, collection smoke box 4, chimney 5, transfer cigarette board 6, combustor 12, boiler inner bag 2, three return strokes firetubes 3 of group, collection smoke box 4 from the bottom up set gradually on boiler casing 1's center axis, chimney 5 sets up the upside at collection smoke box 4 and extend to boiler casing 1's outside, 2 sides of boiler inner bag set up combustor 12, set up furnace gate 11, main burner 13, mother fire 14 on the combustor 12 respectively, transfer cigarette board 6 to set up on chimney 5.

The outer wall of the boiler shell 1 is provided with a heat insulation layer, so that heat loss is reduced, and energy is saved.

The boiler inner container 2 is provided with the convection pipe, so that the heating area is enlarged, the heat exchange area is large, the whole arrangement is compact and reasonable, the heat transfer coefficient is large, the heat efficiency is high, and the operation heat efficiency is generally not lower than 90%.

The boiler comprises a boiler shell 1 and a chimney, and is characterized in that a top plate 20 and a bottom plate 17 are respectively arranged at the upper end and the lower end of the boiler shell 1, the bottom of a boiler liner 2 is connected with the bottom plate 17, a grate 15 is arranged on the bottom plate 17, one end of the chimney 5 is communicated with a smoke collection box 4 through a sealing plate 18, and the other end of the chimney penetrates through the top plate 20 and is connected with a flange 8.

One end of the three return fire tubes 3 is connected with the boiler inner container 2 through a closing plate 21, and the other end is connected with the smoke collection box 4 through a connecting plate 19.

The three return fire tubes 3 consist of a connection tube 22 and an elbow 23.

And a liner water pipe 16 is wound on the boiler liner 2.

One side of the boiler shell 1 is respectively provided with a sewage discharge outlet 24, a water replenishing port 25 and an overflow port 26, the other side of the boiler shell is respectively provided with a hot water return port 27 and a hot water outlet 28, and the top plate 20 is provided with a vent 29.

The boiler shell 1 is provided with a first liquid level meter 30 and a second liquid level meter 31 at the upper part, and a thermometer 32 at the lower part.

The chimney 5 is a chimney made of a material special for a GB/T3091-2008 boiler and is connected with the flange 8.

Lifting lugs 7 are respectively arranged on two sides of the top plate 20.

The utility model discloses before the installation, at the selected position, according to the size shown in the figure, handle the basis with concrete structure, treat that lug 7 on the adjustable boiler casing of basis solidification rear 1 carries out the stove charge, alignment, and boiler casing 1 hoists in place, must the alignment, and the bolt-up is tightened with the steel wire three times, each other becomes 120 degrees.

The sewage draining outlet 24, the overflow outlet 26, the first liquid level meter 30, the second liquid level meter 31 and the thermometer 32 realize the safety protection function; so as to ensure the safe and economic operation of the boiler.

The hot water return port 27 and the hot water outlet port 28 form a hot water circulation system, and the water replenishing port 25 is used for replenishing cold water.

The fuel of the utility model can adopt two kinds of soft coal/gas. Second-class bituminous coal is put on the fire grate and is fully combusted; the gas device is replaced on the furnace door 11, the petroleum associated gas can be combusted, the thermal stress generated by uneven temperature in the furnace body is avoided, and a large water level safety space is reserved in the arrangement form of the low-position combustion chamber, so that the combustion is easy, the thermal efficiency is high, and the operation is convenient; the dual-purpose stove of coal gas becomes.

The utility model discloses a working process: because the dual-purpose gas heating furnace is adopted, the heating furnace is comprehensively checked before ignition, each connecting port has no leakage phenomenon, the smoke adjusting plate 6 is opened, a plurality of firewood is put on the fire grate 15 to burn during coal burning, the coal briquette is added after ignition, and the furnace door 11 is closed to burn;

when gas is combusted, the fire grate 15 can be taken out to prolong the service life of the fire grate 15, the combustion chamber 12 is ignited to enter a working state, the hot water in the boiler shell 1 is returned to the water inlet 27, a large amount of cold water is added to the water inlet 25, and the boiler shell 1 outputs hot water to other devices through the hot water outlet 28;

fire banking: when the coal is fired, adding the pulverized coal, covering the pulverized coal with cinder, opening the furnace door 11, closing the smoke adjusting plate 6, and covering a slag removing cover; when gas is combusted, the gas source of the main burner 13 is closed to extinguish the main fire, and the main fire 14 is left to burn normally; secondary furnace burning and heating: when the coal is fired, the smoke adjusting plate 6 and the slag removing plate are opened, the furnace door 11 is closed, the fire hook is poked at the bottom of the fire grate 15, the secondary combustion can be carried out, and when the gas is combusted, the gas source of the main fire nozzle 13 is opened, and the main fire 14 is automatically ignited.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. The utility model provides a vertical fire section of thick bamboo direct heating furnace of dual-purpose ordinary pressure three return strokes of coal/gas, a serial communication port, including boiler shell, boiler inner bag, three return strokes firetubes of group, collection smoke box, chimney, accent cigarette board, combustor, boiler inner bag, three return strokes firetubes of group, collection smoke box from the bottom up set gradually on boiler shell's center axis, the chimney sets up the upside at collection smoke box and extend to boiler shell's outside, boiler inner bag side sets up the combustor, set up furnace gate, main burner, mother's fire on the combustor respectively, transfer the cigarette board setting on the chimney.

2. The direct heating furnace of claim 1, wherein the boiler casing has a top plate and a bottom plate at upper and lower ends thereof, the bottom of the boiler liner is connected to the bottom plate, the plate is provided with a grate, one end of the chimney is connected to the smoke collection box through a sealing plate, and the other end of the chimney penetrates through the top plate and is connected to the flange.

3. The coal/gas dual-purpose atmospheric pressure three-pass vertical fire tube direct heating furnace of claim 2, wherein one end of the three sets of the return fire tubes is connected with the boiler inner container through a closing plate, and the other end is connected with the smoke collection box through a connecting plate.

4. The coal/gas dual-purpose atmospheric pressure three-pass vertical barrel direct heating furnace according to claim 3, wherein the three sets of pass fire tubes are composed of connecting tubes and bends.

5. The coal/gas dual-purpose atmospheric pressure three-pass vertical fire tube direct heating furnace according to claim 4, wherein the boiler inner container is wound with an inner container water passing pipe.

6. The coal/gas dual-purpose atmospheric pressure three-return vertical fire-tube direct heating furnace as claimed in claim 5, wherein one side of the boiler shell is respectively provided with a sewage discharge outlet, a water replenishing opening and an overflow opening, the other side is respectively provided with a hot water return opening and a hot water outlet, and the top plate is provided with a vent opening.

7. The coal/gas dual-purpose atmospheric pressure three-pass vertical fire tube direct heating furnace according to claim 5, characterized in that: the upper part of the boiler shell is respectively provided with a first liquid level meter and a second liquid level meter, and the lower part of the boiler shell is provided with a thermometer.