KR101114533B1 - a heat exchanging pipe manufacturing apparatus for HRSG and a heat exchanging pipe - Google Patents

Abstract

The present invention relates to a heat pipe manufacturing apparatus of a heat exchanger for a waste heat recovery facility, wherein the heating fins are wound on the outer surface of the metal tube and welded and fixed at the same time. Rotating support to rotate by a heating, heat transfer pin supply unit to be wound in a spiral while continuously supplying a strip-shaped heating fins cut in a predetermined interval on the outside of the tube, and the heating fins wound on the tube integrally welded In the heat pipe manufacturing apparatus comprising a welding portion, the heat transfer fin is spirally wound on the tube is welded and is configured to further include a heat transfer fin bent to deform the heat transfer fin in a zigzag.

As a result, the molding operation is performed so that irregular bending is performed on the heating fins, and at the same time, the flow direction of the fluid passing between the heating fins is irregularly formed, thereby increasing the residence time of the fluid, thereby maximizing heat exchange efficiency. It will have the effect of producing the heat pipes quickly.

HRSG, waste heat recovery, heat pipe, heat exchanger, heat fin

Description

Heat transfer pipe manufacturing apparatus for waste heat recovery equipment and heat transfer pipe manufactured by the same {a heat exchanging pipe manufacturing apparatus for HRSG and a heat exchanging pipe}

The present invention relates to a heat transfer tube used for waste heat recovery facilities, and more particularly, to a heat transfer tube manufacturing apparatus and heat transfer tube manufactured by maximizing heat exchange efficiency.

Heat recovery steam generator (HRSG) generally refers to a device for recovering waste heat. The hot exhaust gas (about 650 ° C) emitted after combustion of a gas turbine has a large amount of energy, and thus a considerable loss when released to the atmosphere. This occurs, where it is used to recover the energy that is thrown away by the exhaust gases emitted to the atmosphere.

The waste heat recovery facility generates steam through heat exchange by passing hot gas turbine exhaust gas into the waste heat recovery boiler, and the generated steam drives electricity to generate steam, and the steam generated from the waste heat recovery facility Depending on the application, it is used for industrial and heating purposes, and it is divided into horizontal drum type, vertical drum type, and perfusion type according to its shape.

In particular, the heat transfer tube for heat exchange is essentially used in such a waste heat recovery facility, and the heat transfer tube used for the waste heat recovery facility is generally spaced at one side along the circumference of the metal tube 1 as shown in FIGS. 4 and 5. The heat transfer fins 2 of the cut metal material are wound in a spiral manner and welded together to maximize the heat exchange area of the heat transfer tube.

However, the conventional heat pipe for waste heat recovery facilities as described above is formed in the shape of a metal plate protruding toward the outer side of the tube, and both sides form a rectangular parallelepiped shape, the fluid passing through the outside of the heat transfer tube is a heat transfer fin There is a problem that passes quickly between, thereby causing a limit in heat exchange efficiency.

Accordingly, the present invention has been made in order to solve the conventional problems as described above, the object is that the heating fin is wound on the outer surface of the metal tube and at the same time welding fixed while making the front and rear irregular bending to the heating fin The present invention provides a heat pipe manufacturing apparatus for a heat exchanger for waste heat recovery facility.

In addition, an object of the present invention is to make irregular bending to the heating fins with a simple configuration.

In addition, an object of the present invention is to make the deformation amount of the outer end of the heating fin larger than the deformation amount of the inner end of the heating fin connected to the tube.

On the other hand, it is an object of the present invention to provide a heat transfer tube of a heat exchanger for a waste heat recovery facility so that a rapid vortex is generated in a fluid that undergoes heat exchange while passing through the outside of the tube.

In order to achieve the above object, the present invention is a heat transfer to be wound in a spiral while continuously supplying a rotary support portion for rotating the tube at a constant speed, and a strip-shaped heating fins cut at regular intervals on one side outside the tube. In the heat pipe manufacturing apparatus comprising a fin supply unit and a welding unit for integrally welding and fixing the heating fins wound on the tube, the heat transfer fins are spirally wound on the tube and welded at the same time deforms the heating fins zigzag It further comprises a pin bent portion.

In addition, the heat transfer fin bent portion; is characterized in that a plurality of pressing projections projected to be bent by pressing the heat transfer pin to the side on the outer surface of the rotating body is coupled to the drive motor.

In addition, the rotating body is formed to a height corresponding to the heating fin, the upper end is disposed adjacent to the outer side of the tube, the lower end is disposed adjacent to the outer end of the heating fin, the diameter gradually increases downward Characterized in that formed in a conical shape.

On the other hand, the present invention in the heat exchanger tube is formed in a spiral shape as a whole spirally spaced apart at regular intervals on the outer side of the tube through which the fluid passes in the inside, the direction of the fluid passing through the space between the heating fins The heating fins are bent in an irregular zigzag shape to the front and rear to form irregularly.

Thus, the present invention is equipped with a heat transfer fin bent portion of the heat transfer fin is wound on the outer surface of the metal tube and welded at the same time while the heat transfer fin manufacturing apparatus of the heat exchanger for the heat exchanger waste heat recovery equipment to be irregularly bent in the front and rear. By providing a, the forming operation is made so that irregular bending to the heat transfer fins are made at the same time, the flow direction of the fluid passing between the heat transfer fins is irregularly formed to increase the residence time of the fluid, thereby increasing the heat exchange efficiency It has the effect of rapidly producing the maximized heat pipe.

In addition, the present invention is a simple configuration of the rotating body formed by the heating motor and the pressurizing projection is formed by the heating fin bending portion to be made irregularly bent on the heating fin, while the production of the heating fin bent portion is made smoothly continuous processing is made smoothly It will have an improved effect.

In addition, the present invention is to form a rotor in a conical shape so that the deformation amount of the outer end of the heating fin is larger than the deformation amount of the inner end of the heating fin connected to the tube, the inner side of the heating fin welded to the tube is excessively deformed It has the effect of preventing the welding strength with a tube from falling.

On the other hand, the present invention by providing a heat transfer tube of the heat exchanger for the waste heat recovery facility to form a sudden vortex in the fluid heat exchange is made by passing through the outside of the tube irregularly bent the heat transfer fin fixed to the outside of the tube, The residence time of the fluid in the space between the increases the effect of maximizing the heat exchange efficiency.

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

1 is a schematic plan view showing an embodiment of the present invention, Figure 2 is an enlarged perspective view of the main portion of Figure 1, the present invention relates to a heat pipe manufacturing apparatus installed in the heat exchanger of the waste heat recovery facility, as shown The heating support 10, the heat transfer fin supply unit 20, and the welding unit 30 are continuously supplied with the flat heat transfer fins 2 on the outside of the metal tube 1 to be welded and fixed integrally with the tube 1. At the same time it is to be provided with a heat transfer fin bent portion 40 to irregularly zigzag deformation on the heat transfer fin (2).

The rotation support 10 is to support the metal tube (1) to be rotatable, it is to be composed of a conventional motor and guide, etc. in order to rotate in the axial direction in a fixed state in the tube (1). Preferably, it is preferable that the tube 1 is linearly moved at a constant speed so that the heat-transfer fin 2 to be described later is spirally wound on the outer surface of the tube 1.

The heat transfer fin supply unit 20 is a heat transfer fin (2) attached to the outer surface of the tube (1) is continuously supplied to be wound spirally on the outer surface of the tube (1), the metal plate of a long length The heating fins 2 formed in a strip shape and one side of which is cut in parallel at regular intervals are continuously supplied to be wound spirally on the outside of the tube 1, so that one side is spirally on the outside of the tube 1. At the same time as the wound is opened while the incision on the opposite side of the tube 1 to the outer side of the heat transfer fin (2) is separated to protrude.

The welding part 30 is to weld and fix the metal tube 1 and the heat transfer fin 2 of the metal integrally, the tube (1) and the high-frequency current flows through the heat transfer fin (2) tube ( At the same time that the heating fins 2 are in contact with 1), it is preferable that the tube 1 and the heating fins 2 be configured to be a high frequency welder which is welded and fixed integrally.

The heat transfer fin bent portion 40 is welded and fixed to the outside of the tube (1) as described above and at the same time the heat transfer fin (2) irregularly bent in a zigzag before and after the heat transfer fin (2) The flow direction of the fluid passing therebetween is irregularly formed so that the residence time of the fluid increases as the vortex is generated in the fluid, and a common force for bending the heat transfer fin 2 by applying a physical force to the heat transfer fin 2. It is also possible to be composed of a hammer, etc., the rotating body to bend the heating fin (2) while being coupled to the drive motor 41 is rotated in order to achieve a continuous smooth bending to the heating fin (2) is continuously supplied. It is preferable to be composed of).

The rotating body 42 is formed in a cylindrical shape that is coupled to the rotation of the driving motor 41 described above, a plurality of pressing projections 43 to the radially protruding radially formed on the outer circumferential surface, the above-described heating fin (2) It is supplied to be placed in contact with the tube 1 to be rotated by the rotation of the drive motor 41.

Accordingly, the strip-shaped heating fins 2 are supplied and welded to the outer surface of the tube 1 and the rotating body 42 is rotated while the pressing protrusion 43 presses the outer surfaces of the heating fins 2. By making irregular bending on the heat transfer fins 2, the work of bending the whole heat transfer fins 2 in a simple configuration becomes possible.

In addition, the rotating body 42 is formed such that the diameter of the upper end adjacent to the tube 1 is formed in a conical shape that is gradually smaller than the diameter of the lower end corresponding to the outer end of the heat transfer fin 2 on the opposite side, the tube (1) Optimal bending is performed on the outer side of the heat transfer fin 2 while excessive deformation is applied to the weld joint of the heat transfer fin 2 to prevent the coupling force between the tube 1 and the heat transfer fin 2 from deteriorating or failure. It is desirable to make it.

4 is a plan view showing the heat transfer tube of the heat exchanger for waste heat recovery facility according to the present invention, the heat transfer tube manufactured as described above is to maintain the irregular bending state of the heat transfer fin (2) zigzag in the front and rear as shown The fluid flows smoothly inside the heat transfer tube, and when the fluid flowing outside the heat transfer tube passes between the heat transfer fins 2 for heat exchange, the fluid strikes the heat transfer fins 2 and proceeds in an irregular direction. By forming a vortex from the outside, the residence time of the fluid in the space between the heat transfer fins 2 is increased, thereby making the heat exchange more efficient.

1 is a front view showing a schematic configuration of the present invention.

Figure 2 is an enlarged perspective view of the main portion of the present invention.

Figure 3 is a plan view showing an example of the heat pipe manufactured by the present invention.

Figure 4 is a perspective view showing an example of a conventional heat pipe.

5 is a plan view of FIG. 4.

[Description of Drawings]

1 tube 2 heating fin

10: rotating support

20: heating fin supply unit

30: weld

40: electric heating bend section

   41: drive motor 42: rotating body

   43: pressing projection

Claims (4)

Heat transfer to be wound in a spiral while continuously supplying a rotary support 10 for rotating the tube 1 at a constant speed, and a strip-shaped heat-transfer fin 2, one side of which is cut out at regular intervals on the outside of the tube 1; In the heat transfer tube manufacturing apparatus comprising a fin supply unit 20 and a welding unit 30 for integrally welding and fixing the heat transfer fin (2) wound on the tube (1), The heat transfer fin manufacturing apparatus for waste heat recovery facilities further comprises a heat transfer fin bent portion (40) for deforming the heat transfer fin (2) to zigzag at the same time as the heat transfer fin (2) is spirally wound on the tube (1). The method of claim 1, The heat transfer fin bending portion 40; Waste heat recovery facility, characterized in that a plurality of pressing projections 43 protruding to be bent by pressing the heat transfer fin (2) to the outer side of the rotating body 42 is coupled to the drive motor 41 is rotated Heat pipe manufacturing apparatus. 3. The method of claim 2, The rotating body 42, It is formed to a height corresponding to the heat transfer fin (2), the upper end is disposed adjacent to the outside of the tube (1), the lower end is disposed adjacent to the outer end of the heat transfer fin (2), gradually downward Heat pipe manufacturing apparatus for waste heat recovery equipment, characterized in that formed in a conical shape with a larger diameter. In the heat transfer tube protruding fixed in a spiral form as a whole, while the heat exchange fin (2) having a rectangular parallelepiped shape spaced apart at regular intervals on the outside of the tube (1) through which the fluid passes through, Heat pipe for the waste heat recovery facility, characterized in that the heat transfer fin (2) is bent in an irregular zigzag shape in the front and rear, so that the direction of the fluid passing through the space between the heat transfer fin (2) irregularly.

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