KR950008564Y1 - Boiler - Google Patents

Abstract

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Description

Boiler

1 is a longitudinal sectional front view of the boiler according to the present invention.

2 is the same cross-sectional view.

3 is a cross-sectional view of a boiler according to another embodiment of the present invention.

4 is a reference diagram showing the flow of fire by the corrugated plate.

* Explanation of symbols for main parts of the drawings

1: fire chamber 4: inner heating water pipe

5: outer heating water pipe 6: extruding

7: corrugated plate 9, 11: ceramic fireproof wall

10: space 11a: upper layer

11b: lower layer 41, 51: insertion end

The present invention relates to the improvement of a water-pipe boiler in which a brackish drum is placed on the upper part of the boiler and a sod drum on the lower part of the boiler, and the two drums are connected by a plurality of heating water pipes. It is related to a water pipe boiler which prevents heat loss of the combustion chamber by the natural ventilation method and completely burns out at a higher temperature atmosphere and also simplifies the internal structure.

As an example of the boiler compared with this invention, there is a utility model notification 73-1038.

However, the prior art of this structure method is forcibly recovering heat from the water pipes, which not only promotes shortening of the mechanical life of the water pipes, but also welds with the drums and brackish drums in proportion to the multiple installation of the water pipes. As the number of points increases, the welding work becomes difficult and the time required for the completion of the unit is long, so the production efficiency is low and the volume is inevitably increased, which is far from the small-capacity high-performance boiler. In addition, a separate partition from the heating water pipe is installed to induce the combustion gas to circulate around the water pipe. However, it is inevitable to increase the manufacturing cost as it corresponds to the partition, and even the flow of the combustion gas is a straight stream so that the hydrothermal effect Not only did it fail to meet expectations, but there were also many heat loss factors, resulting in a lack of high temperature and high temperature atmosphere in the firebox.

Therefore, the object of the present invention is to reduce the unnecessary internal spaces other than the firebox and the heating water pipe as much as possible, and to reduce the appearance of the boiler by greatly reducing the external appearance of the boiler while increasing the water heat effect and the high temperature atmosphere due to the heating water pipe. It is to provide a water tube boiler that can maximize the yield.

This proposed objective can be achieved simply by changing the structure of the heated water pipe and improving the insulation structure inside the firebox. In other words, as is commonly seen in water-pipe boilers, it is the same as that of the case where a drum is placed in a howe, a radix drum is placed on top, and the two drums are connected by a plurality of heated water pipes bent into an arc. However, only two rows of heating water pipes should be arranged on concentric circles, but the inner heating water pipes should be installed close to close enough to not leave a gap in the arrangement direction so as to serve as a fire induction partition, and the outer heating water pipes should be arranged at regular intervals. Instead of blocking the fire passage in the radial direction by connecting the adjacent water pipes with the grate, the fire that flows between the inner and outer heating water pipes causes turbulent flow, resulting in the extension of the flight time, thereby increasing the hydrothermal effect. .

Furthermore, in order to accelerate the turbulence as described above, a corrugated partition is installed in the radial direction between the inner and outer heating water pipes, and a ceramic fireproof wall is formed on the inner surface of the front and rear walls of the firebox in order to create a high temperature atmosphere and complete combustion of the firebox. One is also included in the features of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Above and below the fire chamber 1, a radix drum 2 and a drum 3 are arranged, and these drums 2 and 3 are arranged in a single row of heated water pipes 4 and 5 formed by bending the arc. Are connected by. The heated water pipes 4 and 5 are arranged concentrically. Therefore, a space 10 of uniform width remains between these heated water pipes 4 and 5. The space 10 serves as a passageway when the fire that passed through the fire chamber 1 is discharged.

Both ends of the inner heating water pipe (4) and the outer heating water pipe (5) is used as the insertion end (41, 51) to be inserted into the insertion hole drilled on the radix drum 2 and the water drum (3) by the shaft diameter processing. In other words, the outer diameters of the insertion ends 41 and 51 are smaller than the inner diameters of the insertion holes of the nose drum 2 and the drum 3 by a mechanical tolerance so that they can be easily fitted. Then, after inserting the insertion end (41, 51) in the insertion hole is coupled to form a watertight structure by the outer edge is expanded by using a welding or expansion device to close contact.

In addition, it is natural that the inner heating water pipe 4 closely adheres with little gap left in the arrangement direction and drills the insertion hole accordingly. On the other hand, the outer heating means 5 is arranged at regular intervals in the arrangement direction, and at the same time, the outer heating means 5 adjacent to each other are integrated by attaching a gushing 6 to the center of the outer surface in the arrangement direction. By forming and installing the inner heating means 4 and the outer heating water pipe 5 in this form, a space for discharging fire is secured in the arrangement direction of each water pipe, but the fire passage is not constructed at all in the radial direction.

Accordingly, the fire is only discharged out of the boiler along the space 10 formed between the inner and outer heating water pipes 4 and 5 from the fire chamber, and the flow of the fire is not flowed smoothly, but the space 10 is a kind of both sides. By forming a corrugated wall, it is induced by an irregular flow, that is, turbulence, and escapes. The turbulent phenomenon of such a fire is not different from the extension of the residence time in the space 10, so that the heat exchange efficiency by the heated water pipes 4 and 5 is relatively high, thereby producing high temperature steam in a short time.

In the space 10, a partition for forming a fire passage is not provided. However, a plurality of corrugated plates 7 are provided in the radial direction. However, this corrugated board 7 is not a substitute for a partition. The turbulent phenomenon as described above is to achieve more actively. That is, the inner and outer heating water pipes 4 and 5 induce turbulent phenomena of the fire in and around the circumferential direction of the space 10, while the corrugated plate 7 induces turbulence of the fire in the radial direction of the space 10. The turbulent phenomenon of fire that occurs on the slopes extends the residence time in the space 10 further, and the hot water is recovered by the inner and outer heating water pipes 4 and 5 while passing through every corner. Production is possible.

On the other hand, the ceramic fireproof walls 9 and 11 are built in the front wall of the fire chamber 1, the fire door 13 provided here, and the back wall of the fire chamber 1 inside. As in the embodiment, the rear fire wall 11 is a smooth vertical wall, which causes the fire to collide with the fire wall 11, come out, and then fold forward to the front of the space 10, and then spread through the chamber to the atmosphere. , Suitable for small boilers (5 tons or less).

In addition, as shown in FIG. 3, only the rear fireproof wall 11 can form the lower half 11b thinner than the upper half 11a naturally, and can also be constructed as a two-stage fireproof wall naturally layered. In the case of a large boiler of 5 tons or more, the temperature in the fire chamber 8 is designed to be slightly different depending on the layers. If the size of the fire chamber 1 is large, the temperature of the lower layer may be somewhat lower than the temperature of the upper layer even in the high temperature atmosphere of the fire chamber 1.

Then, the airflow of the upper layer will also go down to the lower layer when the heat is taken away, and once the temperature is lowered, it is advantageous to increase the thermal efficiency afterwards. It is for this reason that the step on the rear fire wall 11 smoothly induces the high temperature air flow of the upper layer 11a to the lower layer 11b to flow back toward the burner 12 and quickly folds back to the upper space 10 again. It is to induce it to lift.

In addition, the ceramic fireproof walls 9 and 11 are inexpensive and easy to supply and demand as well as the high-temperature insulation and excellent heat insulation effect and heat resistance compared to the high-grade insulation materials used up to now. At temperatures as low as 1100 ° C, they have the physical properties and heat to withstand high temperatures unimaginable for boilers. The present invention takes advantage of this.

Next, the preheating air production structure of the natural wind system provided in the fire door 13 is demonstrated. Inside the fire door 13, a ceramic fireproof wall 9 is provided, and inside and outside are doubled, and the inside is hollow. The space 14 is through a blower 8 which communicates with the burner 12 inward and obstructs the entrance of the space. Thus, after receiving the air supplied from the blower 8 and preheating it with the latent heat stored therein, the burner 12 is also faced to prevent overheating of the fire door 13 due to the latent heat and at the same time, the inlet of the cold In addition, when the temperature of 1) decreases, the temperature inside the fire chamber 1 suddenly decreases when the boiler is stopped, and the internal structure of the radix drum 2, the drum 3, and the inner and outer heating water pipes 4 and 5 It is concerned that it will adversely affect the factor, thus preventing the disadvantages caused by water supply phenomena. Yet, taking away the temperature of the firebox 1 does not occur at all. In this respect it is clearly distinguished from the prior art. Furthermore, the fire door 13 is formed on a scale such that at least the inner surface of the outer heating means 5 can be seen. Thereby, the fire door 13 can be opened and the inside surface of the outer side heating water pipe 5 can be cleaned easily.

In summary, the heat recovery rate of the heating water pipes has been reduced by extending the residence time by changing the flow at the time of discharge of the fire into turbulence by the space formed by the inner heating means and the outer heating water pipe and the corrugated plate installed in the space. It is much more increased, and according to the physical characteristics of the ceramic fireproof wall installed on the front and back walls and inside of the fire door, it is possible to achieve complete combustion by having a higher temperature atmosphere, or the external air introduced by using the latent heat of the fire door. By preheating and supplying to burner, heat loss of firebox and overheating of firebox door are all prevented. Moreover, even more heat efficiency can be obtained even if only the inner and outer heating water pipe of single head line is provided. The high performance is comparable, and the production cost is significantly lowered. Class it is possible to have the number of course also easily be cleaned inside the boiler until the originally fulfill the given mechanical lifetime.

Claims (1)

In the upper and lower parts of the firebox 1, the radix drum 2 and the sod drum 3 are arranged, and the heat drums in which the two drums 2 and 3 are bent into arcs are arranged in a row and connected. The inner heating water pipe (4) and the outer heating water pipe (5), each of which is bent to approximately half the length of the tube and reduced in diameter at both ends thereof, into the insertion ends (41, 51), leaving a constant space (10) therebetween. The insertion ends 41 and 51 are connected to the insertion holes of the nose drum 2 and the drum 3, and the inner heating means 4 are arranged so that there is almost no gap in the arrangement direction. Installed adjacently and the outer heating means (5) are arranged at regular intervals in the arrangement direction, but the adjacent heating water pipes are connected to each other by the plate-shaped glands (6), and radiates a plurality of corrugated plates (7) in the space (10) To the front wall of the firebox 1 and the firebox door 13 installed therein The back wall is a boiler characterized by the construction of a ceramic fireproof wall (9, 10).