KR20080015913A - Twin furnace smoke tube boiler - Google Patents

Abstract

A twin furnace smoke tube type boiler is provided to increase electric heat area and minimize operation stop time for the boiler by individually forming a waste gas chamber having a first chamber and second chamber. A twin furnace smoke tube type boiler comprises burners, two furnaces(108,110), a waste gas chamber(112a), a smoke tube, and a flue gas chamber. The two furnaces, which are installed at the lower part of the boiler and combined with the burners, ignite flame according to the operation of the burners. The waste gas chamber, which is positioned at the rear side of the two furnaces, has a passage for discharging waste gas generated from each furnace. A first chamber for discharging combustion waste gas generated from the two furnaces, and the waste gas chamber are individually formed at the upper part of the rear side of each furnace.

Description

Twin furnace-related boiler {TWIN FURNACE SMOKE TUBE BOILER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a furnace smoke tube type boiler having a twin furnace, and more particularly to improving the structure of the exhaust gas chambers constituting the twin furnace to maintain the furnace. The present invention relates to an invention capable of easily performing repairs and increasing heat transfer area.

Conventional furnace associated boilers typically have a furnace (flame tube) installed inside the boiler body, ie the boiler body is filled with water and heated.

There are many kinds of structures of such furnace-associated boilers, but Utility Model Registration No. 0211743, “Condensing Gas Boiler,” was filed by Utility Model Registration of Nov. 15, 2000. have.

The furnace associated boiler disclosed in the above registration is a furnace for burning a flame of a burner inside a boiler shell in which water for boiler operation is filled to generate steam or hot water. Is installed, and a plurality of smoke tubes for circulating the exhaust gas discharged from the furnace and discharged to the external exhaust cylinder

It is installed.

In addition, an economizer for recovering sensible heat and latent heat of exhaust gas as condensation heat and improving thermal efficiency is provided.

Most of the furnace associated boilers, including the above registration proposals, are effectively used to generate a large amount of steam.

The furnace-related boiler was the largest production size of 20ton / Hr steam and 13Gcal / Hr hot water in terms of the structure specified in KSB6233 (forced steam boiler and hot water boiler for meat).

Many furnace-related boilers have a lot of structural and technical problems in order to install one furnace in the boiler body to generate steam at the maximum capacity and the highest pressure.

In addition, by heating the water in the operation of the boiler having a single furnace, a problem of low thermal efficiency occurs if the boiler operation is not sophisticated.

For example, it is very difficult to design a boiler for the maximum load in winter and the minimum load in summer, so even if the boiler is operated with the lowest steam load, the temperature in the furnace will be very high. Combustion may also cause increased pollutants such as nitrogen oxides (NOx).

The patent filed by the applicant of this case (Daeyeol Boiler Co., Ltd.) was developed to solve the shortcomings of one (single) furnace-related boiler as described above. No. 10-0782139 is a "twin-torque associated boiler".

The twin-chamber associated boiler of the pre-registered invention is a front view of the twin-chamber associated boiler body shown in FIG. 1A, a longitudinal cross-sectional view shown in FIG. 1B, and a rear view shown in FIG. 1C. A water inlet 102 is provided and a steam outlet 104 is formed in the upper portion, and the two cylinders 108 and 110 are arranged in a closed cylindrical shape with two furnaces 108 and 110 arranged in the lower side inside and below as shown in FIG. 1A and FIG. 1B. Is installed.

The front part of the two furnace barrels (108, 110) is open, the rear part is coupled to communicate with the exhaust gas chambers 112 installed on the inner back of the boiler body 100, the exhaust gas chambers (112) Is a partition tube 114 coupled to the inside of the boiler body 100 by a plurality of fixing bars 128 and connected to a plurality of pipes having a vertically penetrated hollow at a central portion of the exhaust gas blade chamber 112. It is divided into both sides by) consists of the first wing 116 and the second wing 117.

The first blade chamber 116 is connected to the rear portion of the furnace 108, the second blade chamber 117 is connected to the rear portion of the furnace (110).

In addition, two flame holes 122 are formed in the rear portion of the boiler body 110 as shown in FIG. 1C, and the two flame holes 122 have first and second blade chambers 116 and 117. ), It is possible to check the flame burning in each furnace (108, 110).

As illustrated in FIGS. 1A, 1B, and 1C, the upper tubes 108 and 110 are provided in the form of stacked first and second tubes 118 and 120.

The first connection pipe 118 discharges the exhaust gas of the first wing chamber 116 and the second wing chamber 117 of the exhaust gas chamber 112 to the front surface of the boiler body 100, and the second connection pipe ( 120 is installed on the upper portion of the first tube 118 circulates the high-temperature exhaust gas discharged to the outside of the boiler body 100 by the first tube 118 through the inside of the boiler body 100 again. To be discharged toward the rear portion (back side) of the boiler body 100.

Inside the steam outlet 104 of the boiler body 100, a steam separator 130 that separates and outputs only medium temperature water (high temperature steam) by separating water and high temperature steam from a high temperature submersible. Are combined.

The water supplied to the inside of the boiler body 100 configured as described above is the installation space of the first and second connection pipes 118 and 120 and the installation interval of the furnace barrels 108 and 110 and the hollow of the partition tube 114. Through it is circulated to the top and bottom of the barrel (108) (110).

Two burners 200, 202, and all combustion chambers 400 as shown in FIGS. 2, 3, and 4 on the front of the boiler body 100 having the same structure as in FIGS. 1A, 1B, and 1C. 402 is provided, and the rear combustion chamber 500 is attached to the back surface.

FIG. 2 is a twin furnace associated boiler 1 according to an embodiment of the pre-registered invention, wherein two burners 200 are operated separately at the inlet of the furnace 108, 110 of the boiler body 100 described above. 202 is coupled, and the two burners 200 and 202 are connected to fuel valves 700 and 702 and blower tubes 800 and 802.

In addition, the upper part of the burner 200, 202, the exhaust gas generated in the furnace 108, 110 of the boiler body 100 by the operation of the burner 200, 202, the secondary circulating flue ( Two full combustion chambers 400 and 402 for discharging into the flue gas chamber are coupled to the boiler body 100 by a hinge to open and close.

The other side of the boiler body 100 is provided with a water gauge 106 for displaying the height of the water supplied to the inside of the boiler body 100 to the outside.

3 is a partial longitudinal cross-sectional view of the twin-chamber associated boiler shown in FIG. 2, and FIG. 4 is a partial cross-sectional view of the twin-chamber associated boiler shown in FIG. 2.

In FIGS. 3 and 4, the structure of the condensing boiler having a coal mill 602 inside the flue 600 installed on the upper part of the rear combustion chamber 500 is illustrated. However, the present invention is not necessarily limited to the condensing boiler. It may not be provided with the crusher 602.

3 and 4, burners 200 and 202 that are individually operated at the inlet of the furnaces 108 and 110 formed at the bottom of the boiler body 100 of the twin furnace-associated boiler 1 at the bottom. Is provided, and two all-chambers 400 and 402 are provided in front of the portion where the holes of the first tube 118 and the second tube 120 are exposed.

The rear part chamber 500 formed as one body is attached to a portion of the bottom of the boiler body 100 in which the discharge hole of the second tube 120 is exposed.

The upper part of the rear combustion chamber 500 is attached to the flue 600 having a cutting machine 602 built therein.

In addition, a flame inspection window 124 is installed in the flame hole 122 connected to the first wing chamber 116 and the second wing chamber 117 of the exhaust gas chamber 112, respectively, and the burners 200 and 202 are provided in the flame chamber 122. Blower pipes 800 and 802 for supplying outside air are connected to each other.

The pre-registered invention configured as described above has the advantage of satisfying consumer's needs and securing market competitiveness of the product by solving the shortcomings of the one-single-laboratory boiler, which is made up of one (single) labor. The first blade chamber and the second blade chamber are partitioned by the partition tube, and the partition tube is welded and installed, so that not only the difficulty of replacing the associations during maintenance, but also one of the two furnace barrels In the event of an abnormality in the maintenance, there was a difficulty in the task of separating the entire pair of kegs from the boiler cylinder (100).

In addition, the exhaust gas blade chamber formed integrally with the two furnace barrels is formed in a shape corresponding to the boiler cylinder on the rear side, and the exhaust gas blade chamber occupies the inside of the boiler cylinder.

The present invention complements and develops a twin-chamber-related boiler invented by the applicant of this case. According to the individual configuration of each pair of furnaces installed, the conventional exhaust gas chambers are integrally formed with respect to the two pairs of furnaces, thereby eliminating the maintenance difficulties caused by being divided into section sections by partition tubes. In addition, individual maintenance is possible, and management cost can be reduced according to the maintenance, and the downtime of the boiler can be minimized by shortening the working time according to the maintenance, thereby increasing the thermal efficiency and improving the exhaust gas blade compartment. The first blade chamber and the second blade chamber are formed so as to be locally formed on the upper part of the two backaches. The improvement is to provide a twin furnace associated boiler which can increase the heat transfer area and improve the productivity of steam.

The present invention for achieving the above object is a burner for generating a flame by burning a mixture of fuel and air; It is coupled to the burner is installed in the lower part of the boiler body having a steam outlet for storing the water supplied through the water inlet and outputs the hot water heated inside or the steam generated therein, by the operation of the burner Two laborers burning flames; An exhaust gas chamber located at the rear side of the two furnaces and forming a passage for discharging the exhaust gas generated in each furnace; An association formed at an upper portion of the two furnaces, one side of which is connected to the exhaust gas chamber and formed of a plurality of tubes for discharging the exhaust gas discharged from the boiler body; In a twin furnace associated boiler having a flue gas chamber installed inside the boiler body and having an economizer for recovering and condensing sensible and latent heat of exhaust gas discharged through the pipe,

A waste gas chamber 112a including a first wing chamber 116a and a second wing chamber 117a serving as a passage for discharging combustion exhaust gas generated in the two furnaces 108 and 110 is provided. It is achieved by a twin-tubular associated boiler, characterized in that it is formed locally and individually on the upper part of the rear part (rear) of each furnace 108 and 110.

As described above, the twin-chamber associated boiler according to the embodiment of the present invention includes the first blade chamber 116a and the second blade-type 117a, which are primary exhaust passages for discharging high-temperature exhaust gas generated by combustion in the furnace. As the exhaust gas chamber 112a is formed in each of the twin furnaces 108 and 110 installed as the boiler fuselage 100, the exhaust gas chamber is separated and separated by a partition tube. Solving the difficulties and at the same time can maintain each pair of kegs (108, 110) individually to reduce the cost of maintenance, as well as to minimize the downtime of the boiler by reducing the working time due to maintenance Has an advantage.

In addition, each of the first blade chamber 116a and the second blade chamber 117a constituting the exhaust gas chamber 112a are locally and individually formed on the upper side of the rear portion (rear) of each of the furnace barrels 110 and 108. There is an effect that can improve the productivity of the steam.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

In the following description of the present invention will be denoted by the same reference numerals for components corresponding to the pre-registered invention.

5 to 9 of the present invention is a twin furnace associated boiler according to the present invention includes a burner (200, 202) for generating a flame by burning a mixture of fuel and air; It is installed in the lower portion of the boiler body 100 having a steam outlet 104 stored in the inside and heated in the hot water or steam generated therein is coupled to the burners 200, 202, the burner ( Two furnaces 108 and 110 which burn the flames by the operation of 200 and 202, and are located at the rear side (rear side) of the two furnaces 108 and 111 and generated in each furnace. A waste gas chamber 112a which forms a passage for discharging the exhaust gas to be discharged, and is installed at an upper portion of the two furnaces 108 and 110 and connected to one side of the exhaust gas chamber 112. And exhaust pipes discharged therefrom to the outside of the boiler body 100. A flue gas chamber installed inside the boiler body 100 and having an economizer 602 therein for recovering and condensing sensible and latent heat of the exhaust gas discharged through the boiler. It consists of 60.

The association is a front smoke box (400, 402) installed in the front of the boiler body 100 to exhaust gas filled in the exhaust gas chamber (112a) located on top of the furnace (108) (110). A first pass smoke tube 118 discharged to the upper surface of the boiler body 100 and installed at an upper portion of the first tube 118 and exhaust gases through the entire combustion chambers 400 and 402. The second pass smoke tube (120) for discharging to the flue 600 is installed in is installed.

The exhaust gas blade compartment 112a in which the first connection 118 is installed is separately installed in each of the kegs 108 and 110, and the second wing chamber 117 is provided in the kegs 108, and the kegs 110. ) Is provided with a first wing chamber 116.

The first blade chamber 116 and the second blade chamber 117 are locally and individually configured on the upper side of the rear part of the furnace barrel 108 and 110.

 On one side of each of the first and second wing chambers 116 and 117 formed for each of the furnaces 108 and 110, an explosion hole 122 protruding to the outside of the boiler body 100 is provided. The flame hole 122 is provided with a flame glass window 124.

The flame hole 122 and the flame inspection window 124 is to check the combustion state of the two kegs (108, 110) to check the operating state of the boiler.

A water separator 130 for separating pure water from the heated hot water in the boiler body 100 and discharging only pure steam is connected to the steam outlet.

Prior to describing the operation of the twin-tubular associated boiler 1 of the present invention, the boiler body 100 will be described under the assumption that water for boiler operation is filled with an appropriate level as shown in FIG. 8.

When the boiler driver operates one of the two burners 200 and 202 installed in the twin furnace associated boiler 1, the flames provided by the burners are burned in the furnace.

For example, when the burner 200 burns a mixture of the fuel supplied from the fuel valve 700 and the air provided from the blower tube 800, sparks are generated in the furnace barrel 108 of the boiler body 100.

When the burner 200 of the boiler body 100 is ignited to generate a flame flame in the furnace 108, when the water filled in the boiler body 100 is heated and heated above a predetermined temperature, steam of high temperature is separated from the separator. Input 130.

At this time, the water separator 130 separates the high temperature hot water input into water and steam, and sends only the steam from which the water is removed to the steam outlet 104.

On the other hand, the high-temperature exhaust gas generated by the combustion in the furnace cylinders 108 and 110 of the boiler body 100 is discharged to the first blade chamber 116a and the second blade chamber 117a which are primary exhaust passages.

Exhaust gas introduced from each furnace 108 and 110 into each of the first wing chamber 116a and the second wing chamber 117a is discharged to the first pipe 118 connected to the upper side thereof, and thus the boiler body 100 is discharged. Exhaust gas is discharged to all the combustion chamber 400, 402 installed in the front portion of the), and the exhaust gas introduced into the all combustion chamber 400, 402 is installed in the longitudinal direction from the inner upper portion of the boiler body 100 in the longitudinal direction Through 120 is discharged to the rear combustion chamber 500 installed as the rear (rear) of the boiler body (100).

As described above, the high temperature exhaust gas generated by the heat of combustion and the combustion heat in the furnaces 108 and 110 is discharged to the first wing chamber 116a and the second wing chamber 117a, which are exhaust passages, thereby filling the boiler body 100. The water is heated, and all surfaces of the exhaust gas chamber 112a including the first blade chamber 116a and the second blade chamber 117a of each of the furnace passages 108 and 110, which are exhaust passages, are connected to the boiler body 100. Since it is in direct contact with the filled water, the deterioration of the iron plate due to the high temperature, such as the flame flame discharged from the furnace (108, 110) is also prevented.

In addition, the first wing chamber 116a and the second wing chamber 117a, which are exhaust gas blade chambers 112a provided in each of the furnace barrels 108 and 110, are locally formed on the upper side of the rear portion (back) of the furnace barrel. The heat transfer area is increased, and the increase in the heat transfer area has an effect of increasing steam generation, thereby improving the generation of steam.

In the upper part of the rear combustion chamber 500 through which the exhaust gas is discharged, an economizer 602 capable of recovering sensible and latent heat of the exhaust gas discharged to a high temperature of about 230 ° C. with high temperature water is installed.

The hot water recovered by the coal mill 602 is supplied to the boiler body 100 through a lower condensate discharge valve (not shown) to be used to increase the thermal efficiency of the twin furnace associated boiler 1. .

When a flame flame is simultaneously provided to two furnaces 108 and 110 formed in the boiler body 100 as described above, the twin furnace-associated boiler 1 can obtain a desired steam and hot water load at a high speed. In addition, by operating the two burners (200, 202) attached to each of the two kegs (108, 110) separately to operate by igniting the two burners selectively according to the maximum winter use and summer minimum load By operating an ultra-low load (about 5%) boiler, the furnace temperature can be lowered, reducing the amount of pollutants such as nitrogen oxides.

In addition, the furnace-related boiler 1 of the present invention is operated by a method of alternately selecting an operation number of burner and an operating sequence of burner according to the change of the total load, so that low load high efficiency operation is achieved. It is possible to save fuel cost and to extend the service life of the boiler by using one burner.

As described above, the twin furnace tubular boiler of the present invention, as described above, may cause aging of parts due to continuous use, thereby significantly reducing the heating function of the boiler. As a preventive measure, regular or emergency maintenance will be performed.

The parts to be maintained may be the first wing 116a, the second wing 117a, and the associated 118, 120 which constitute the furnace barrel 108, 110 and the exhaust gas wing 112a. However, in the twin furnace barrel associated boiler of the present invention, the first blade chamber 116a and the second blade chamber 117a are individually formed in the furnace barrels 108 and 110, respectively. In the maintenance work of), maintenance work is possible in a state in which only parts to be maintained from the boiler body 100 are separately separated, thereby significantly reducing the work time according to maintenance.

1A, 1B and 1C are front, cross sectional and back views of a twin furnace associated boiler body according to a preferred embodiment of the prior art;

Figure 2 is a front view of a twin furnace associated boiler according to an embodiment of the prior art.

FIG. 3 is a cross-sectional view of the twin furnace associated boiler shown in FIG. 2. FIG.

4 is a plan cross-sectional view of the twin furnace associated boiler shown in FIG.

Figure 5 is a perspective view of the main barrel extract of the main part of the twin-tubular associated boiler according to the present invention.

6 is a rear view of a state in which a furnace, which is a main portion of a twin furnace-related boiler according to the present invention, is applied to a boiler body.

7 is a front view of a twin furnace associated boiler according to the present invention.

8 is a cross-sectional view taken along line A-A of FIG.

Fig. 9 is a plan sectional view taken along line B-B in Fig. 6 showing a pair of furnace tube associated boilers according to the present invention.

<Description of the code | symbol about the part of drawing>

1: twin furnace-associated boiler 100: boiler body

102: water inlet 104: steam outlet

106: water gauge 108, 110: old pain

112a: exhaust gas wing room 116a, 117a: first wing room, second wing room

118: first association 120: second association

122: flame hole 124: flame inspection window

128: bar stay 200, 202: burner

400, 402: All rooms 500: Rear rooms

600: year (exhaust bin) 602: cutting machine

700, 702: fuel valve 800, 802: blower pipe.

Claims (1)

A burner that generates a flame by burning a mixture of fuel and air; It is coupled to the burner is installed in the lower part of the boiler body having a steam outlet for storing the water supplied through the water inlet and outputs the hot water heated inside or the steam generated therein, by the operation of the burner Two laborers burning flames; An exhaust gas chamber located at the rear side of the two furnaces and forming a passage for discharging the exhaust gas generated in each furnace; An association formed at an upper portion of the two furnaces, one side of which is connected to the exhaust gas chamber and formed of a plurality of tubes for discharging the exhaust gas discharged from the boiler body; In a twin furnace associated boiler having a flue gas chamber installed inside the boiler body and having an economizer for recovering and condensing sensible and latent heat of exhaust gas discharged through the pipe, A waste gas chamber 112a including a first wing chamber 116a and a second wing chamber 117a serving as a passage for discharging combustion exhaust gas generated in the two furnaces 108 and 110 is formed. A bi-tubular associated boiler characterized in that it is formed locally and individually on the top of the back of each furnace (108) (110).

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