KR101740533B1 - Multi-tube boilers having Simultaneous Heat Source with electricity and fuel - Google Patents

Abstract

[0001] The present invention relates to a multi-tube boiler using electricity and fuel as co-heat sources, and more particularly, to a multi-tube boiler using electricity and fuel as a simultaneous heat source, The heat exchange efficiency is improved by increasing the residence time of the firearm, and the electric heater rod is inserted into the connecting water pipe, and the electric fuel outside the electric furnace is used as the heat source, so that the electric water and steam As a simultaneous heat source.
To this end, the present invention provides a steam turbine comprising: a lower water tube into which water for generating hot water or steam is introduced; A plurality of central water tubes installed vertically so as to communicate with the lower water pipes at regular intervals in front and rear and storing water introduced from the lower water pipes; An upper steam pipe through which steam generated from the central water pipe flows through the steam connecting pipe and is discharged through an outlet; And an outer housing for receiving the lower water pipe, the central water pipe, and the upper steam pipes, wherein the central water pipe has one end communicating with the lower water pipe and the other end communicating with the steam pipe, Two or more horizontal water pipes horizontally installed up and down so as to allow the pair of vertical water pipes to communicate with each other and a plurality of connection water pipes installed parallel to the vertical water pipes such that the horizontal water pipes are communicated with each other And an electric heater rod is received in the plurality of connection water pipes through the upper side horizontal water pipe to generate heat by receiving external power.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a multi-tube boiler having a simultaneous heat source,

[0001] The present invention relates to a multi-tube boiler using electricity and fuel as co-heat sources, and more particularly, to a multi-tube boiler using electricity and fuel as a simultaneous heat source, The heat exchange efficiency is improved by increasing the residence time of the firearm, and the electric heater rod is inserted into the connecting water pipe, and the electric fuel outside the electric furnace is used as the heat source, so that the electric water and steam As a simultaneous heat source.

Generally, a boiler is a general term for a device that burns a predetermined fuel and heats water with the heat of combustion. The boiler is a cylindrical boiler, a water tube boiler, an associated boiler, and a special boiler depending on the body structure. , Outer boilers, etc., depending on the water circulation method, natural circulation type, forced circulation type is classified into.

Among them, the related type boiler is a system in which a plurality of the combustion gas passes under the water surface of horizontally installed boiler, and the heat transfer area is increased. Since the boiling time is relatively short and the evaporation amount is larger than the size, .

However, the related type boiler has a disadvantage in that it is difficult to construct a high-pressure, large-capacity structure due to its complex structure, difficulty in inspection and repair, and thermal efficiency is low due to loss of heat medium.

On the other hand, a multi-tube boiler is a boiler that generates steam by passing a plurality of water tubes through which water flows and passing the combustion gas at a right angle or parallel to the water tube. The tube is small in diameter, A combination of a rainfall pipe (downpipe) that causes water to flow from top to bottom and an evaporation pipe (uppipe = water pipe) that generates steam, the boiler water is circulated easily and the evaporation amount is large. .

The multi-tube boiler is widely used for large capacity and high pressure. Generally, in Korea, a water tube type is selected for a boiler having a capacity of 10ton / HR and a steam pressure of 10㎏ / ㎠ or more, and sometimes a pressure of 350㎏ / In particular, it is possible to increase the efficiency of a steam turbine or the like by producing superheated steam by attaching a superheater.

However, most multi-tube boilers have a problem in that the efficiency of the boiler is lowered because the retention time of the firebox is short and the fuel efficiency is lowered and the generated steam temperature is low.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a guide plate for adjusting the height between adjacent horizontal water tubes in a central water tube, A multi-tube boiler which improves heat exchange efficiency, inserts an electric heater rod in the connecting water pipe, uses the fuel as a heat source outside the electric furnace, and simultaneously generates electricity and fuel capable of producing hot water and steam as the water is simultaneously heated .

The present invention has the following features in order to achieve the above object.

The present invention relates to a water treatment apparatus, comprising: a lower water tube into which water for generating hot water or steam is introduced; A plurality of central water tubes installed vertically so as to communicate with the lower water pipes at regular intervals in front and rear and storing water introduced from the lower water pipes; An upper steam pipe through which steam generated from the central water pipe flows through the steam collection pipe and is discharged through the steam discharge pipe; And an outer housing for receiving the lower water pipe, the central water pipe, and the upper steam pipes, wherein the central water pipe has one end communicating with the lower water pipe and the other end communicating with the steam pipe, Two or more horizontal water pipes horizontally installed up and down so as to allow the pair of vertical water pipes to communicate with each other and a plurality of connection water pipes installed parallel to the vertical water pipes such that the horizontal water pipes are communicated with each other And an electric heater rod is received in the plurality of connection water pipes through the upper side horizontal water pipe to generate heat by receiving external power.

Wherein the lower water tube comprises a pair of first lower water tubes arranged in parallel and a second lower water tube connecting the pair of first lower water tubes, wherein one of the pair of first lower water tubes An inlet port through which water flows into one side of the water tube is formed, and the pair of vertical water pipes are connected to the pair of first lower water pipes so as to communicate with each other.

The upper steam pipe includes a pair of steam collection pipes for collecting steam generated from the pair of vertical water pipes, a steam discharge pipe for connecting the steam collection pipes so as to communicate with each other and discharging steam delivered from the pair of steam collection pipes, .

The fire extinguisher is introduced into the lower space formed by arranging the plurality of central water pipes, and the water stored in the central water pipe is heated. The firebox for heating the central water pipe is installed in a guide plate horizontally installed between the central water pipes Thus leading to a discharge path.

In addition, the central water tubes of the central water tubes are formed at different heights from the horizontal water tubes adjacent to the lower water tubes, and the remaining central water tubes are arranged so that the lower side water tubes are formed at the same height, And the guide plate is horizontally disposed by a predetermined length horizontally to the upper side of the horizontal water pipes where the flame is raised so as to horizontally guide the upwardly guided firearm to the other side.

The guide plate may be formed so that at least two portions thereof are guided in different directions, one side is opened and the other side is formed in an airtight manner, and the connection water pipe includes an inner pipe and an inner pipe of a connection water pipe accommodating the electric heater rod And the outer tube of the connecting water tube, and water for heating is stored in the outer tube of the connecting water tube.

In addition, a coil spring-shaped first heat conduction member, which is in contact with the inner wall surface of the connection water tube and is spaced apart from the electric heater rod by a predetermined distance, is inserted into the connection water pipe of the central water pipes or inside the connection water pipe of the central water pipes, And the second heat conduction member is formed as a screw vane and is configured to raise water along the second heat conduction member, wherein the second heat conduction member is formed to be spaced apart from the electric heater bar, .

According to the present invention, the height of the horizontal water tubes adjacent to each other in the central water tubes of one side is adjusted and the guide plate is formed to guide the movement of the firebox, thereby improving the heat exchange efficiency by increasing the residence time of the firebox.

In addition, there is an effect that hot water and steam can be produced quickly as the water is simultaneously heated by inserting the heater rod in the connecting water pipe and using the fuel as the heat source outside the electric furnace.

Further, according to the formation of the first heat conductive member or the second heat conductive member, the heating efficiency of the heated water can be further improved and rapid steam production can be achieved.

1 is a perspective view of a multi-tube boiler according to an embodiment of the present invention.
2 is an exploded perspective view of a multi-tube boiler according to an embodiment of the present invention.
3 is a partial plan view of a multi-tube boiler according to an embodiment of the present invention.
4 is a cross-sectional view taken along line AA 'of FIG.
5 is a cross-sectional view taken along line BB 'of FIG.
FIG. 6 is a view showing a path through which the firearm is moved in FIG.
7 is a cross-sectional view illustrating a multi-tube boiler according to another embodiment of the present invention.
8 is a view showing a state in which a first heat conducting member according to another embodiment of the present invention is installed.
9 is a view showing a state in which a second heat conduction member according to another embodiment of the present invention is installed.
10 is a view showing a process of installing a screw tube according to another embodiment of the present invention.
11 is a view showing a connection water pipe provided with a thread tube according to Fig.
12 is a view showing a process of fastening a threaded tube and a connection tube according to FIG.
13 is a cross-sectional view of the screw thread tube coupled to the connecting water tube according to FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. For the sake of convenience, the size, line thickness, and the like of the components shown in the drawings referenced in the description of the present invention may be exaggerated somewhat. The terms used in the description of the present invention are defined in consideration of the functions of the present invention, and thus may be changed depending on the user, the intention of the operator, customs, and the like. Therefore, the definition of this term should be based on the contents of this specification as a whole.

FIG. 1 is a perspective view showing a multi-pipe boiler according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a multi-pipe boiler according to an embodiment of the present invention, FIG. 3 is a cross- Fig.

4 is a cross-sectional view taken along line A-A 'of FIG. 1, and FIG. 5 is a cross-sectional view taken along line B-B' of FIG. 1, and FIG. 6 is a view showing a path of a firearm moving in FIG.

Referring to the drawings, a multi-tube boiler 100 according to an embodiment of the present invention includes a lower water pipe 10, a central water pipe 20, an upper steam pipe 30, and an external housing 40.

In the multi-tube boiler 100 according to the present invention, the water supplied through the lower water pipe 10 is stored in a predetermined position of the central water pipe 20, and the inside is heated by the electric heater rod 24, It is possible to produce steam or hot water very quickly as it is heated and heated by a fire extinguishing fuel such as oil or gas as the outside. In addition, the firebox is pivoted from one side to the other side by the guide plate 50, which will be described later, to increase the residence time of the firebox, thereby further increasing the heat efficiency and heat exchange efficiency.

Referring to the lower water pipe 10, the central water pipe 20, the upper steam pipe 30, and the outer housing 40 to be constructed as described above, water is introduced into the lower water pipe 10 in order to generate hot water or steam. And is provided to supply water to the central water pipe 20 communicating therewith.

The lower water pipe 10 is composed of a pair of first lower water pipes 11 arranged in parallel and a second lower water pipe 12 connecting the pair of first lower water pipes 11, The first lower water pipe 11 of the first lower water pipe 11 is provided with an inlet 11a through which water is introduced from the outside and the other first lower water pipe 11 is required to have hot water A hot water outlet 11b for discharging the hot water to the outside is formed.

A central water pipe 20 is connected to the upper side of the lower water pipe 10 so that the central water pipe 20 receives water from the lower water pipe 10 and receives heat from the fire pipe to heat the supplied water. do.

The central water pipe 20 is constructed by sequentially arranging a plurality of central water pipe 20 units including a vertical water pipe 21, a horizontal water pipe 22 and a connection water pipe 23.

The arrangement of the plurality of central water tubes 20 is for producing hot water and steam by supplying a large amount of water. Even if the same amount of water is heated, the water is separated into individual central water pipes 20 The heating area is increased so that hot water is generated within a short time.

' 형태의 이송경로로 안내함에 따라 화기의 체류시간이 증대되도록 한다. In addition, by arranging the central water tubes 20 and guiding plates 50 to be described later, the firearms introduced from one side of the central water pipes 20 are guided to the upper side, horizontally moved to the other side, , And then discharging it horizontally to the other side,

'Type of conveying path to increase the residence time of the firearm.

One end of the vertical water pipe 21 of the central water pipe 20 communicates with the lower water pipe 10 and the other end of the vertical water pipe 21 communicates with the steam collecting pipe 31 and is installed perpendicular to the lower water pipe 10.

Accordingly, water is supplied from the lower water pipe 10, and the steam generated by the fire is discharged to the upper steam collection pipe 31.

The horizontal water pipe 22 is horizontally installed at two or more places so that the pair of vertical water pipes 21 communicate with each other. The upper horizontal water pipe 22 is located on the upper side of the vertical water pipe 21 And the lower side horizontal water pipe 22 is located at the center side of the vertical water pipe 21. [

At this time, the lower side horizontal water pipe 22 of the certain central water pipes 20 for the inflow of firearms has a predetermined inflow space with different height from the neighboring horizontal water pipe 22.

In addition, the central water tubes 20 other than the corresponding central water tubes 20 are formed so that the height of the lower side water tubes 22 is the same.

Thus, the flame is introduced into the space between the lower side horizontal water pipes 22 having different forming heights, and the flame is moved and discharged according to the guide of the guide plate 50 installed on the upper side.

The connection water pipe 23 is installed in parallel with the vertical water pipes 21 so that the horizontal water pipes 22 are communicated with each other so that the water supplied from the vertical water pipes 21 passes through the horizontal water pipes 22, 23, so that the firearm supplied under the lower horizontal water pipe 22 heats all of the vertical water pipe 21, the horizontal water pipe 22 and the connecting water pipe 23.

An electric heater rod 24 which receives external power and generates heat is received in the connection water pipe 23 through the upper horizontal water pipe 22 in the connection water pipe 23.

By the provision of the electric heater bar 24, the water stored in the connecting water pipe 23 is first heated by the electric heater rod 24, and is heated in a very short period of time So that it can be heated.

On the other hand, the guide plate 50 is provided to increase the residence time of the firebox by horizontally pivoting the firebox, which is introduced and raised as described above, from one side to the other side. And the rising firearm is horizontally moved to the other side.

As shown in FIG. 5, the guide plate 50 may be formed at one point and pivoted once, and two places may be formed as shown in FIG. 6 and rotated twice.

It is preferable that the number of the guide plates 50 is appropriately formed according to the temperature of the incoming fire.

That is, when the temperature of the incoming fire is relatively low, if the temperature of the fire is relatively low, the temperature of the fire may decrease and the heat exchange efficiency may decrease due to a large temperature. When the temperature of the fire is relatively high, The thermal efficiency can be lowered.

The upper steam pipe 30 is connected to a pair of steam collecting pipes 31 through which the steam generated from the pair of vertical water pipes 21 is collected and the steam collecting pipe 31 so as to communicate with each other, And a steam discharge pipe (32) for discharging steam delivered from the steam collection pipe (31).

The outer housing 40 is provided to receive the lower water pipe 10, the central water pipe 20 and the upper steam pipe 30 and water is supplied from the lower water pipe 10 to the outside of the outer housing 40 A water level measuring unit 60 for receiving the water level of the central water pipe 20 is provided and a pressure measuring unit 70 is connected to the upper steam pipe 30 to check the pressure and temperature of steam .

The other end of the flame inlet 41 is connected to the flame outlet 42 of the fire extinguisher 42 which is moved to the outside after being moved by a predetermined path, .

7 is a cross-sectional view illustrating a multi-tube boiler according to another embodiment of the present invention.

Referring to the drawings, the connection water pipe 23 according to the present embodiment includes an inner pipe 23a of a connection water pipe accommodating the electric heater rod 24 and an outer pipe 23b of a connection water pipe accommodating the inner pipe 23a. And the water for heating is stored in the outer pipe 23b of the connecting water pipe.

That is, in the above-described embodiment, the electric heater bar 24 is accommodated in the connection water pipe 23 together with water. In this embodiment, the electric heater rod 24 is accommodated in the inner pipe 23a of the connection water pipe , And the water is accommodated in the outer tube (23b) of the connecting water tube so that the electric heater rod (24) is not in contact with water.

This is a preferable configuration when the electric heater bar 24 can not be exposed to water.

FIG. 8 is a view showing a state in which a first heat conducting member according to another embodiment of the present invention is installed, and FIG. 9 is a view showing a state in which a second heat conducting member according to another embodiment of the present invention is installed.

The multi-tube boiler 100 according to the present embodiment is configured such that the first heat conduction member 80 and the second heat conduction member 90 are mounted in the connection water pipe 23 to heat the fire pipe heated on the external wall surface of the connection water pipe 23 The water in the connection water pipe 23 is heated more quickly by rapidly transferring the water to the inside of the connection water pipe 23 through the first heat conductive member 80 and the second heat conductive member 90 having relatively high thermal conductivity.

The first heat conduction member 80 is provided in the connection water pipe 23 of the central water pipes 20 in the form of a coil spring so as to contact the inner wall surface of the connection water pipe 23, So as to be spaced apart from each other.

It is preferable that the first thermally conductive member 80 is disposed in the outer tube 23b of the connecting water pipe 23 when the connecting water pipe 23 is configured as a double pipe.

9, the second heat conduction member 90 extends from the inner wall surface of the connection water pipe 23 in the direction of the center of the connection water pipe 23 and is spaced apart from the electric heater rod 24 do.

In addition, the second heat conduction member 90 is formed as a screw vane so that water is raised along the second heat conduction member 90 when water is supplied.

FIG. 10 is a view showing a process of installing a screw tube according to another embodiment of the present invention, FIG. 11 is a view showing a connected water tube provided with a screw tube according to FIG. 10, FIG. 13 is a cross-sectional view illustrating a state in which a thread tube is coupled to a connection tube according to FIG. 10; FIG.

Referring to the drawings, a multi-pipe boiler 100 according to the present embodiment is provided with a threaded tube 95 in which a threaded cutout is formed in a connected water pipe 23 and is coupled to the cutout.

The threaded tube 95 is located inside the incision of the connecting water tube 23 and has a depression 96 having a constant accommodation space and a recessed portion 96 extending from the depression 96 to be in contact with the inner wall surface of the connecting water tube 23 And a flange portion 97 fixed thereto.

The accommodation space of the depression 96 may be formed in a triangular shape in cross section as shown in the figure, but other shapes may be used.

As the firebox is further transferred into the connecting water pipe 23 as much as the recessed space of the depression 96, the heating contact area is further increased. Such an increase in the heating contact area can improve the heating time and heating efficiency.

A cutout groove 23c and a projecting piece 95a protruding outside the flange portion 97 of the screw thread tube 95 and the cutout groove 23c formed in the upper or lower side of the cutting portion of the connection water pipe 23 .

The screw thread tube 95 is positioned on the inner cutout portion of the connecting water pipe 23 and then inserted into the receiving pocket 23d as the protruding piece 95a passes through the cutout groove 23c and rotates at a predetermined angle The combination is completed.

After the welding, the work such as welding is performed. In the welding process, the welding process is not necessary.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

10: Lower water pipe 20: Central water pipe
21: vertical water tube 22: horizontal water tube
23: connection pipe 24: electric heater rod
30: Upper steam pipe 31: Steam collecting pipe
32: steam discharge pipe 40: outer housing
50: guide plate 60: water level measuring unit
70: pressure measuring unit 80: first heat conduction member
90: second heat conduction member 100: multi-tube boiler

Claims (9)

A lower water tube 10 into which water for generating hot water or steam is introduced;
A plurality of central water pipes 20 arranged vertically so as to be able to communicate with the lower water pipes 10 and arranged at predetermined intervals in the front and rear directions and storing the inflow water from the lower water pipes 10;
An upper steam pipe (30) for introducing steam generated from the central water pipe (20) through the steam collecting pipe (31) and discharged through a steam discharge pipe (32); And
And an outer housing 40 for receiving the lower water pipe 10, the central water pipe 20 and the upper steam pipe 30,
The central water tube (20)
A pair of vertical water tubes 21 communicating with the lower water tube 10 at one end and communicating with the steam collecting tube 31 and being installed perpendicular to the lower water tube 10,
Two or more horizontal water tubes 22 provided horizontally and vertically so as to allow the pair of vertical water tubes 21 to communicate with each other and a plurality of parallel water tubes 22 provided parallel to the vertical water tubes 21 so that the horizontal water tubes 22 communicate with each other An electric heater rod 24 is installed in the plurality of connection water pipes 23 through the upper horizontal water pipe 22 to generate heat by receiving external power,
The connection water pipe 23 is formed in the form of a double pipe composed of an inner pipe 23a of a connection water pipe for accommodating the electric heater rod 24 and an outer pipe 23b of a connection water pipe for receiving the inner pipe 23a, Water for heating is stored in the outer tube (23b) of the connecting water tube,
The inner tube 23a of the connecting water tube 23 is formed with a threaded cut portion and a threaded tube 95 is coupled to the cutout portion of the inner tube 23a. A flange portion 96 which is located inside the incision portion of the connecting tube 23a and which is fixed in contact with the wall surface of the inner tube 23a of the connecting water tube 23 extending to the depression 96, 97)
A protruding piece 23c protruding outside the flange 97 of the threaded tube 95 and a cutout groove 23c and a receiving pocket 23d formed on the upper or lower side of the incision side of the inner tube 23a of the connecting water tube 23, The screw thread tube 95 is positioned on the inner cutout portion of the inner tube 23a of the connecting water tube 23 and then the protruding piece 95a is passed through the cutout groove 23a to rotate at a predetermined angle (23b). The multi-tube boiler according to claim 1 or 2, wherein the heat exchanger (20) is inserted into the receiving pocket (23b).
The method according to claim 1,
The lower water pipe (10)
A pair of first lower water pipes 11 arranged in parallel to each other and a second lower water pipe 12 connecting between the pair of first lower water pipes 11, And a pair of vertical water pipes 21 are connected to the pair of first lower water pipes 11 so as to communicate with each other. Wherein the electric power and the fuel are simultaneously heat sources.
3. The method of claim 2,
The upper steam pipe (30)
A pair of steam collecting tubes 31 for collecting steam generated from the pair of vertical water tubes 21 and a pair of steam collecting tubes 31 connected to the steam collecting tubes 31 so as to communicate with each other And a steam discharge pipe (32) for discharging the steam.
3. The method of claim 2,
In the lower space formed by arranging the plurality of central water tubes 20, the fire is introduced and the water stored in the central water tube 20 is heated. The firearm for heating the central water tube 20 is connected to the central water tube 20, Wherein a discharge path is induced according to a guide plate (50) installed horizontally between the first and second plates.
5. The method of claim 4,
The central water tubes 20 of the central water tubes 20 are formed at different heights from the horizontal water tubes 22 adjacent to the lower side water tubes 22 and the remaining central water tubes 20 are connected to the lower side water tubes 22, Are arranged at the same height and arranged so as to be in contact with each other, so that the incoming firearm is guided upward through the lower side horizontal water pipes 22 formed at the different height
Wherein the guide plate (50) is horizontally arranged at a predetermined length horizontally to the upper side of the horizontal water pipes (22) in which the firearm is lifted to horizontally guide the upwardly guided firearm to the other side. .
6. The method of claim 5,
The guide plate (50)
Characterized in that one side is open and the other side is arranged in an airtight manner so that at least two places are guided in different directions.
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