KR101440496B1 - Apparatus for cleaning heat exchange pipe - Google Patents

Abstract

Provided is a heat exchange pipe cleaning device which can freely adjust a cleaning area. The heat exchange pipe cleaning device removes the foreign materials accumulated on the surface of a heat exchange pipe exchanging heat with the exhaust gas passing through a housing in the housing. The heat exchange pipe cleaning device includes: at least one linear guide which is formed on the inner wall of the housing and extends in the longitudinal direction of the heat exchange pipe; and at least one cleaning bar which is connected to the linear guide, intersects with the heat exchange pipe, and includes one or more spray nozzles open toward the heat exchanger pipe. The cleaning bar moves to the cleaning area on the heat exchange pipe along the linear guide in parallel.

Description

[0001] Apparatus for cleaning heat exchange pipe [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchange tube cleaning apparatus for removing foreign substances deposited on a surface of a heat exchange tube, and more particularly, to a heat exchange tube cleaning apparatus in which a cleaning position is freely adjusted.

Various kinds of substances including hydrocarbons, acid gases, and the like may be deposited on the surface of an object, particularly a solid, to form a deposited fouling. Such a foreign object may deteriorate the function of the object, and may induce corrosion and eventually break the object.

The deposited foreign matter is more easily generated when the surface of the object is exposed to the flow of the fluid. In addition, the generation amount of the fluid may increase depending on the composition of the components contained in the fluid, the environmental conditions in which the fluid is placed, and the like. Particularly, in the case of a heat exchange pipe disposed in a flue such as a thermal power plant and designed to continuously contact with a waste gas, the foreign matter deposited on the surface lowers the heat transfer performance of the heat exchange pipe, and the heat recovery rate of the heat exchange pipe is also large .

In order to solve this problem, a heat exchanger tube cleaning apparatus called a soot blower has been used. The soot blower is formed to spray high-temperature, high-pressure steam on the surface of a heat exchange pipe or the like, and can be inserted into a flue or a boiler in which a heat exchange pipe is disposed, thereby removing foreign substances deposited on the surface of the pipe. An example of such a soot blower is disclosed in Korean Utility Model Utility 20-2009-0006884.

However, the conventional cleaning apparatus such as a soot blower has a disadvantage in that it is difficult to easily access the part where the foreign matter is deposited since the washing operation is performed by inserting only a part of the inside of the flue or the boiler inside. Therefore, not only the cleaning operation can not be efficiently performed but also the cleaning effect is not sufficient. For this reason, in the case of the heat exchange tube disposed in the flue, etc., there is a problem that the heat transfer performance can not be improved as desired even after cleaning the foreign matter.

Korean Utility Model Publication No. 20-2009-0006884, (2009, 07, 08), Drawing 2

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a heat exchange tube cleaning apparatus in which a cleaning position is freely adjusted.

The technical problem of the present invention is not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

The heat exchange tube cleaning apparatus according to the present invention is characterized in that the heat exchange tube cleaning apparatus for removing foreign matter deposited on a surface of a heat exchange tube for heat exchange with a waste gas passing through the housing in a housing is formed on the inner wall of the housing, At least one linear guide extending along the longitudinal direction; And at least one cleaning bar connected to the linear guide and intersecting with the heat exchange tube, the at least one cleaning bar including at least one injection nozzle opened toward the heat exchange tube; The cleaning bar is moved parallel to the washing position of the heat exchange tube along the linear guide.

The plurality of heat exchange tubes may extend parallel to each other in the longitudinal direction, and the cleaning bars may be inserted between the heat exchange tubes in a direction perpendicular to the heat exchange tubes.

The heat exchanging tube is connected to the heat exchanging tube by a connecting tube formed in a direction perpendicular to the heat exchanging tube, and the washing bar can be moved to the connecting tube.

The heat exchange pipe cleaning apparatus may further include a shuttle portion slidably coupled to the linear guide, and the cleaning bar may be engaged with the shuttle portion.

The heat exchanger tube cleaning apparatus may further include a driving unit that is formed at at least one end of the linear guide and linearly moves the shuttle unit.

The linear guide may include a ball screw having a drive motor coupled to one end thereof.

The cleaning bar may be injected from the outside of the housing to the shuttle through an opening formed in one side of the housing.

The heat exchange pipe cleaning device may further include a fixing part formed on the shuttle part and detachably fixing one side of the cleaning bar.

The spray nozzle may rotate with a plane in a direction perpendicular to the longitudinal direction of the cleaning bar as a rotation surface.

The heat exchanger tube cleaning apparatus may further include a connection portion rotatably coupled to one side of the cleaning bar, and the injection nozzle may protrude obliquely from a surface of the connection portion in a direction opposite to a rotation direction of the connection portion.

The housing may include a first duct connected to the combustion chamber where the waste gas is generated, and a second duct connected to an exhaust port exhausting the waste gas.

The heat exchange pipe may be one in which any one of combustion air supplied to the combustion chamber and boiler feedwater supplied to the boiler room for heating the fluid by the combustion heat of the combustion chamber is preheated.

The heat exchange tube cleaning apparatus according to the present invention is freely movable along a heat exchange tube which is in heat exchange with the waste gas. Therefore, it is possible to efficiently and effectively carry out the cleaning operation by easily approaching the part where the foreign matter is deposited, thereby improving the heat transfer performance of the heat exchange tube and increasing the waste heat recovery rate of the heat exchange tube.

1 is a perspective view illustrating a heat exchange tube cleaning apparatus, a heat exchange tube, and a housing together according to an embodiment of the present invention.
2 is a cross-sectional view taken along line A-A 'of the heat-exchanging tube cleaning apparatus, the heat-exchanging tube, and the housing of Fig. 1;
3 is a cross-sectional view of the heat-exchanging tube cleaning apparatus, the heat-exchanging tube, and the housing taken along line B-B 'of FIG. 1;
FIG. 4 is an enlarged perspective view of the heat exchange tube cleaning apparatus of FIG. 1. FIG.
5 is an operation diagram of a heat exchange tube cleaning apparatus according to an embodiment of the present invention.
6 is an enlarged perspective view of a heat exchange pipe cleaning apparatus according to another embodiment of the present invention.
7 and 8 are use state diagrams of the heat exchange tube cleaning apparatus of FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and methods for accomplishing the same will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is only defined by the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, a heat exchange pipe cleaning apparatus according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 5. FIG.

2 is a cross-sectional view taken along the line A-A 'of the heat exchanging tube cleaning apparatus, the heat exchanging tube, and the housing of FIG. 1; FIG. And FIG. 3 is a cross-sectional view taken along line B-B 'of the heat-exchanging tube cleaning apparatus, the heat-exchanging tube, and the housing of FIG.

1 to 3, a heat exchange tube cleaning apparatus 10 according to an embodiment of the present invention includes a heat exchange tube 1 formed in an inner wall of a housing 2 and positioned inside the housing 2, At least one linear guide 200 extending along the longitudinal direction and an injection nozzle 110 connected to the linear guide 200 and intersecting the heat exchange tube 1 and opened toward the heat exchange tube 1 At least one cleaning bar (100).

The housing 2 includes a first duct 21 disposed at a lower portion and a second duct 22 disposed at an upper portion of the housing 2. The housing 2 can pass a high temperature waste gas through the respective ducts, Can exchange heat with the waste gas passing through the inside of the housing 2 inside the housing 2 to recover the waste heat of the waste gas having a high temperature. At this time, dust on the waste gas, various granular substances contained in the waste gas, or other contaminants introduced together with the waste gas are adhered to and deposited on the surface of the heat exchange tube 1, so that a large amount of deposited fouling is produced .

The heat exchanging tube cleaning apparatus 10 according to the present invention is capable of moving the cleaning bar 100 in parallel along the linear guide 200 and therefore can be moved in different positions on the surface of the heat exchange tube 1 on which the foreign substances are deposited, Location is easily accessible. Thus, by efficiently and effectively washing the heat exchange tube 1 to remove foreign substances, the heat transfer performance of the heat exchange tube 1 can be improved and the waste heat recovery rate of the heat exchange tube 1 can be greatly increased.

In addition, the pair of linear guides 200 and the cleaning bars 100 may be formed of a plurality of pairs of the heat exchange pipe cleaning apparatuses 10 at different positions, It is possible to wash different parts simultaneously. As a result, the cleaning efficiency can be maximized.

Hereinafter, each of the heat exchange tube cleaning apparatus 10, the housing 2 in which the heat exchange tube cleaning apparatus 10 is installed, and the heat exchange tube 1 to be cleaned will be described in more detail.

The housing 2 may be provided with the first duct 21 and the second duct 22 as described above and may collect waste heat of the waste gas passing through the housing 2 together with the heat exchange tube 1 therein To form a waste heat recovery device. Such a waste heat recovery apparatus may be, for example, a water supply pre-heater installed in the flue of the thermal power plant, or a heat recovery facility such as an air preheater. In either case, any one of the boiler feed water supplied to the boiler room and the combustion air supplied to the combustion chamber may be passed into the heat exchange pipe 1, the waste heat of the waste gas may be recovered and preheated to an appropriate temperature.

 The first duct 21 provided in the housing 2 may be connected to a combustion chamber (not shown) for burning various fuels to obtain thermal energy and the second duct 22 may be connected to an exhaust port (not shown) Lt; / RTI > Therefore, the waste gas at a high temperature generated in the combustion chamber passes through the housing 2 through the first duct 21 and the second duct 22 before being exhausted to the exhaust port, and the heat exchange tube 1 passes through the inside of the housing 2 It comes into contact with the waste gas to recover the thermal energy of the waste gas. The boiler chamber may be connected to the combustion chamber and may be formed to heat the fluid by the high temperature combustion heat generated in the combustion chamber.

The heat exchange tube 1 may be formed as a pipe extending in one side as shown in the drawing, but is not limited thereto. The heat exchange tube 1 may be variously modified in its thickness, diameter, length, etc., and its shape may be variously modified in a form of easy heat exchange. That is, the heat exchange tube 1 is not limited to a tube shape as shown in the drawings, and may be deformed into various shapes capable of heat exchange. At least one side of the heat exchange tube 1 can be branched outwardly of the housing 2 so that the heat transfer medium such as the boiler feed water or the combustion air can be easily injected into the heat exchange tube 1, have.

A plurality of heat exchange tubes (1) extend parallel to each other in the longitudinal direction. The heat exchange tube 1 may extend in a direction connecting the first duct 21 and the second duct 22, that is, in a direction perpendicular to the flow direction in which the waste gas flows, By arranging them parallel to each other, the area of the contact surface contacting the waste gas can be maximized.

The heat exchange tubes 1 are connected to each other through a connecting tube 11 as shown in the figure so as to be repeatedly bent to one side and the other side such as a serpentine shape . The connection pipe (11) may extend in a direction perpendicular to the extending direction of the heat exchange pipe (1) and may be integrally formed with the heat exchange pipe (1).

3, the cleaning bar 100 is inserted between the heat exchange tubes 1 in a direction perpendicular to the heat exchange tube 1 and crosses the respective heat exchange tubes 1. Accordingly, the plurality of heat exchange tubes 1 can be easily cleaned by using the injection nozzles 110 formed at different positions. A washable fluid can be injected through the injection nozzle. The fluid is not limited as long as it can remove foreign matter deposited on the surface of the heat exchange tube, and can be, for example, a gas, a liquid, or the like. At this time, the gas means steam. The steam may be high-pressure steam generated in a boiler room or the like. The liquid may be water or a cleaning liquid further including a cleaning agent exhibiting an additional cleaning effect.

2, the cleaning bar 100 is connected to the linear guide 200 extending along the longitudinal direction of the heat exchange tube 1, so that the cleaning bar 100 can be easily moved between the heat exchange tubes 1. At this time, the cleaning bar 100 can move to the connection pipe 11 connecting between the different heat exchange pipes 1, and at least the end portion of the heat exchange pipe 1 in which the connection pipe 11 is located And the distance between the end and the end. Therefore, the cleaning position of the cleaning bar 100 is not limited to a predetermined limited area, but can be extended widely to the entire heat exchange tube 1. [

The shuttle unit 210 is slidably coupled to the linear guide 200 and the cleaning bar 100 is coupled to the shuttle unit 210 and fixed. The linear guide 200 includes a drive unit 220 for linearly moving the shuttle unit 210 along the linear guide 200. Accordingly, the shuttle unit 210 and the cleaning bar 100 connected to the shuttle unit 210 can be moved together with the driving unit 220. This will be described in more detail below.

An injection pipe 230 extending to the outside of the housing 2 is connected to one side of the cleaning bar 100. The injection pipe 230 can continuously supply the high-pressure steam to the cleaning bar 100 by injecting the high-pressure steam generated in the boiler room or the like into the cleaning bar 100. The injection tube 230 may be formed of a flexible material, for example, designed to withstand the high pressure of steam by including at least one rigid coating layer therein.

The heat exchange pipe cleaning apparatus 10 is formed by forming a pair of a linear guide 200 formed on the inner side of the housing 2 and a cleaning bar 100 connected to the linear guide 200, A plurality of heat exchange tubes 1 may be disposed adjacent to the heat exchange tube 1, and the heat exchange tube 1 may be cleaned at different positions while independently controlling the heat exchange tube 1 as described above. In addition, the heat exchange tube 1 can be easily cleaned by approaching different parts of the heat exchange tube 1.

Hereinafter, with reference to FIG. 4, each component of the heat exchange pipe cleaning apparatus 10 will be described in more detail.

FIG. 4 is an enlarged perspective view of the heat exchange tube cleaning apparatus of FIG. 1. FIG.

Referring to FIG. 4, the cleaning bar 100 may be formed of a rod-like bar that is elongated to one side and may easily cross the heat exchange pipe (see 1 in FIGS. 1 to 3). For example, the cleaning bar 100 may have a conduit through which a fluid can flow, and may be configured to appropriately distribute the high-pressure steam injected through the conduit to the respective injection nozzles 110 .

Although the cylindrical cleaning bar 100 is shown in the drawing, the shape of the cleaning bar 100 is not limited thereto. The shape of the cleaning bar 100 can be modified to any shape as long as it can easily intersect with the heat exchange tube 1.

The cleaning bar 100 has a connection part 120 rotatably coupled to one side thereof. The connection portion 120 may be formed in a ring shape having a predetermined width and may be coupled to the outer circumferential portion of the cleaning bar 100 and rotated around the cleaning bar 100 as shown in FIG. For example, the connection part 120 may be formed of a connecting member such as a rotary joint having a fluid passage formed therein, through which high-pressure steam is supplied from a pipe formed in the cleaning bar 100, And may be formed to be easily guided to the injection nozzle 110.

The injection nozzle 110 is opened toward the heat exchange tube 1 and can be projected obliquely from the surface of the connection portion 120 to one side. Accordingly, when the high-pressure steam injected into the cleaning bar 100 is injected through the injection nozzle 110, the coupling part 120 rotates in a direction opposite to the spray direction of the steam (i.e., the projecting direction of the injection nozzle) And the injection nozzle 110 is also rotated in the same direction as the connection part 120 (see arrows). At this time, the rotation surface on which the injection nozzle 110 rotates may be formed on a virtual plane perpendicular to the longitudinal direction of the cleaning bar 100.

The cleaning bar 100 can easily wash not only the surface of the heat exchange tube 1 on which the foreign substance is deposited but also a wide range around the periphery thereof by using the rotation action of the injection nozzle 110.

A plurality of injection nozzles 110 may be formed on different connection portions 120 as shown in FIG. The number of the injection nozzles 110 may be increased or decreased as needed, and the diameter of the injection nozzle 110 may be changed to be larger or smaller as necessary. That is, by changing the number, diameter, etc. of the injection nozzles 110 in consideration of the pressure of the high-pressure steam, the injection pressure and the injection amount of the steam injected through the injection nozzle 110 can be adjusted to an appropriate level.

The linear guide 200 may extend in a direction perpendicular to the cleaning bar 100 and may be connected to both ends of the cleaning bar 100. Therefore, the cleaning bar 100 is stably supported on the linear guide 200, and the balance can be maintained even during the movement.

The linear guide 200 may include a moving means for linearly moving the linear guide 200 therein. This movement means may include, for example, at least a screw portion 212a extended by the length of the linear guide 200 and a movable portion 212a which is rotatably coupled to the screw portion 212a and moves in accordance with the relative rotation of the screw portion 212a. And the ball screw 212 is rotationally driven by the driving unit 220 formed at one end of the linear guide 200 to rotate the driving unit 220, Can be easily switched to linear motion.

 The shuttle unit 210 is slidably coupled to the linear guide 200 and can linearly move along the linear guide 200. The shuttle part 210 is connected to the ball screw 212 and the moving part 212b of the ball screw 212 through the guide groove 211 formed in the longitudinal direction of the linear guide 200, It can be formed to easily move according to the driving.

The cleaning bar 100 is fixedly coupled to the shuttle 210. Accordingly, the linear motion of the shuttle unit 210 allows linear motion along the linear guide 200 to be performed easily. The shuttle portion 210 may be coupled to both ends of the cleaning bar 100 as shown, but is not limited thereto, and may be coupled to other portions of the cleaning bar 100, if desired. In this case, the linear guide 200 may be additionally formed at a position corresponding to the shuttle 210.

5 is an operation diagram of a heat exchange tube cleaning apparatus according to an embodiment of the present invention.

Referring to FIG. 5, the heat exchange tube cleaning apparatus 10 can easily and effectively clean the heat exchange tube 1 while linearly moving the heat exchange tubes 1 inside the housing 2 as shown in the drawing. That is, the cleaning bar 100 can freely move along the at least one linear guide 200 extending along the longitudinal direction of the heat exchange tube 1 in the left or right direction in the drawing (see arrows) The entire heat exchanger tube 1 can be effectively cleaned without being limited to the area.

At this time, the heat exchange pipe cleaning apparatus 10 is divided into upper and lower portions of the housing 2 at different heights, so that the cleaning operation can be independently performed using the respective cleaning bars 100. Thus, the cleaning operation is also performed efficiently.

On the other hand, the cleaning bars 100 can rotate the spray nozzle 110 through the above-described rotating action to spray the high-pressure steam over a wide range of the surroundings. Therefore, even when the cleaning operation is limited to a specific position, it can be washed together to the periphery. Thus, even if the washing position is randomly changed, the cleaning effect can be superimposed to further improve the effect that the entire heat exchanging tube 1 is cleaned.

As a result, the foreign matter deposited on the heat exchange tube 1 can be removed and the heat transfer performance of the heat exchange tube 1 can be improved, and the waste heat recovery rate of the heat exchange tube 1 can be greatly increased.

Hereinafter, a heat exchanger tube cleaning apparatus according to another embodiment of the present invention will be described in detail with reference to FIGS. 6 to 8. FIG.

For the sake of brevity and clarity, the following description will focus on only the differences from the above-described embodiment, and the description of the remaining parts will be omitted.

FIG. 6 is an enlarged perspective view of a heat exchange pipe cleaning apparatus according to another embodiment of the present invention, and FIGS. 7 and 8 are use state diagrams of the heat exchange pipe cleaning apparatus of FIG.

6, the heat exchanging tube cleaning apparatus 10-1 according to another embodiment of the present invention is constructed such that the cleaning bar 100 is detachably attached to the shuttle unit 210 and is detached from the linear guide 200 It is possible. Therefore, when the cleaning operation is carried out, the cleaning bar 100 can be injected into the housing 2 from the outside of the housing (see 2 in FIGS. 7 and 8) to be coupled to the linear guide 200, The cleaning bar 100 can be detached from the linear guide 200 and then released to the outside of the housing 2. [

In this case, the cleaning bar 100 is not present inside the housing 2, so that it is possible to easily prepare for a situation where foreign substances are formed on the cleaning bar 100. Further, since the cleaning bar 100 does not interfere with the flow of the waste gas, the heat recovery rate of the heat exchange tube (see 1 in FIG. 7 and FIG. 8) can be further increased.

For this purpose, a fixing part 240 for detachably fixing one side of the cleaning bar 100 to the shuttle part 210 is formed. The fixing portion 240 may be formed, for example, in a clamping configuration as shown, but is not limited thereto, and may include various shapes and shapes that facilitate one side of the cleaning bar 100 to be removably fixed It can be transformed into any structure. When the fixing part 240 is formed in a clamping shape as shown in the drawing, a driving part may be formed inside the shuttle part 210 or inside the linear guide 200 to fold or unfold it. For example, the driving unit may include a small-sized servo motor, and a gear box or the like that connects between the servo motor and the fixed unit 240 to distribute / transfer the rotational force of the servomotor to each of the fixed units 240 .

On the other hand, the diameter of the connection portion 120 can be reduced so that the cleaning bar 100 can be easily inserted through the housing 2. [ That is, since the connection portion 120 is deformed into a shape retracted inward as shown in the drawing, it is possible to prevent the injection nozzle 110 from being caught by the housing 2.

7 and 8, the cleaning bar 100 may be injected into the shuttle part 210 through the opening 23 at the outside of the housing 2 and inserted into the heat exchange tubes 1. At this time, a guide flange 23a extending toward the cleaning bar 100 can be formed around the opening 23, and the insertion position of the cleaning bar 100 and the corresponding height It is possible to set in advance the positional relationship of the guide 240, the shuttle portion 210 connected to the fixed portion 240, and the mutual positional relationship of the linear guide 200. [ Thus, the cleaning bar 100 can be easily inserted into the proper position along the guide flange 23a.

When the cleaning bar 100 injected through the opening 23 is completely inserted between the heat exchange tubes 1, the end portion of the cleaning bar 100 overlaps with the fixing portion 240 and the fixing portion 240 overlaps with the overlapped cleaning bar 100. [ The end portion of the base 100 is gripped and fixed easily. At this time, the injection tube 230 connected to the cleaning bar 100 is held inside the opening 23, and can be flexibly moved according to the movement of the cleaning bar 100.

In this state, the cleaning process described above proceeds. The shuttle unit 210 moves along the linear guide 200 and the cleaning bar 100 moves to the cleaning position together with the shuttle unit 210 so that the injection nozzle 110 rotates and the heat exchange tube 1 ). ≪ / RTI > Thus, the foreign matter deposited in the heat exchange tube 1 can be removed, the heat transfer performance of the heat exchange tube 1 can be improved, and the waste heat recovery rate of the heat exchange tube 1 can also be greatly increased.

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, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1: heat exchanger tube 11: connecting tube
2: housing 21: first duct
22: second duct 23: opening
23a: Guide flange 10, 10-1: Heat exchanger tube cleaning device
100: Wash bar 110: Injection nozzle
120: connection part 200: linear guide
210: shuttle part 211: guide groove
212: ball screw 212a: screw part
212b: moving part 220:
230: injection tube 240:

Claims (12)

A heat exchange pipe cleaning apparatus for removing foreign matter deposited on a surface of a heat exchange tube for heat exchange with a waste gas passing through the housing in a housing,
At least one linear guide formed on the inner wall of the housing and extending along the longitudinal direction of the heat exchange tube; And
At least one cleaning bar connected to the linear guide and intersecting with the heat exchange tube, the at least one cleaning bar including at least one injection nozzle opened toward the heat exchange tube; Including,
The cleaning bar is moved parallel to the washing position of the heat exchange tube along the linear guide,
Wherein a plurality of the heat exchange tubes extend parallel to each other in the longitudinal direction,
Wherein the cleaning bar is inserted between the heat exchange tubes in a direction perpendicular to the heat exchange tubes. delete The method according to claim 1,
Wherein the heat exchange tubes are connected to each other by a connection tube formed in a direction perpendicular to the heat exchange tube,
Wherein the cleaning bar moves to the connection pipe. The method according to claim 1,
Further comprising a shuttle portion slidably coupled to the linear guide, wherein the cleaning bar is engaged with the shuttle portion. 5. The method of claim 4,
Further comprising a driving part formed at at least one end of the linear guide and linearly moving the shuttle part. 6. The method of claim 5,
Wherein the linear guide includes a ball screw having a drive motor coupled to one end thereof. 5. The method of claim 4,
Wherein the cleaning bar is injected from the outside of the housing to the shuttle through an opening formed in one side of the housing. 8. The method of claim 7,
Further comprising a fixing portion formed on the shuttle portion and detachably fixing one side of the cleaning bar. A heat exchange pipe cleaning apparatus for removing foreign matter deposited on a surface of a heat exchange tube for heat exchange with a waste gas passing through the housing in a housing,
At least one linear guide formed on the inner wall of the housing and extending along the longitudinal direction of the heat exchange tube; And
At least one cleaning bar connected to the linear guide and intersecting with the heat exchange tube, the at least one cleaning bar including at least one injection nozzle opened toward the heat exchange tube; Including,
The cleaning bar is moved parallel to the washing position of the heat exchange tube along the linear guide,
Wherein the spray nozzle rotates with a plane in a direction perpendicular to a longitudinal direction of the cleaning bar as a rotation surface. 10. The method of claim 9,
Further comprising a connection portion rotatably coupled to one side of the cleaning bar, wherein the injection nozzle protrudes obliquely from a surface of the connection portion in a direction opposite to a rotation direction of the connection portion. The method according to claim 1,
The housing includes a first duct connected to a combustion chamber where the waste gas is generated,
And a second duct connected to an exhaust port for exhausting the waste gas. 12. The method of claim 11,
Wherein the heat exchange tube includes combustion air supplied to the combustion chamber, and
And the boiler feed water supplied to the boiler room for heating the fluid by the combustion heat of the combustion chamber is passed through the inside thereof to preheat the heat exchange pipe.

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