KR20200069647A - Finless type multi-tube double tube heat exchanger with tube (heat exchange tube) fitting - Google Patents

Abstract

The present invention relates to a finless multi-pipe type double pipe heat exchanger in which tube sheets (tube plates) and tubes (heat exchange pipes) are assembled with an assembly fitting device, in a finless multi-pipe type double pipe heat exchanger equipped with a fitting device for coupling a tube sheet (tube plate) and tubes (heat exchange pipes). More particularly, the present invention relates to a finless multi-pipe type double pipe heat exchanger which simplifies a structure to facilitate maintenance and cleaning by allowing separation and assembly of the heat exchange tubes to facilitate repair and replacement of the heat exchange tubes, as well as allowing separation and cleaning of the heat exchange tubes to facilitate cleaning of the heat exchange tubes.

Description

Finless type multi-tube type double tube heat exchanger with tube (heat exchange tube) fittings{omitted}

The present invention (coast) is a pinless type multi-tube type double tube heat exchanger equipped with a fitting device for coupling a tube sheet (tube plate) and a tube (heat exchange tube), so that the tube sheet (tube plate) and tube (heat exchange tube) are assembled It relates to a finless type multi-tube type double tube heat exchanger assembled with a fitting device. More specifically, it enables separation and assembly of a heat exchanger tube to facilitate repair and replacement of the heat exchanger tube, as well as to facilitate heat exchanger cleaning. It relates to a finless type multi-tube double tube heat exchanger that simplifies the structure and facilitates maintenance and cleaning by separating and cleaning.

As is well known, a heat exchange device is a device that heats a heat medium through heat exchange between a high temperature heat source and a low temperature heat medium, and is used for various purposes, such as home heating, hot water acquisition, and industrial energy acquisition. It is widely used in the field and has a long history.

In the past, the heat exchanger used a single tube structure in which a number of pipes penetrated the chamber, the heat medium was stored or flowed in the chamber, and the heat source passed through the pipe, and the heat medium and the heat source exchanged heat.

In recent years, as shown in the Utility Model No. 20-0297422 "Hot Water Boiler", Patent No. 10-1725717 "Double Cylindrical Multi-Cylindrical Heat Exchanger", etc., the pipe is made into a double pipe structure of the inner pipe and the outer pipe, and the heat medium is inside It flows between the pipe and the outer pipe, and the heat source simultaneously heats the inside of the inner pipe and the outside of the outer pipe.

The applicant has also proposed a heat exchange device having a double-tube structure of Patent No. 10-1659786, "Pinless Type Double Tube Heat Exchanger" and Patent No. 10-1672278, "Boiler Pinless Type Multiple Tube Heat Exchanger".

The heat exchanger according to the prior art was able to increase the heat transfer area and the heat exchange rate by allowing the heat exchange to be made in double, but when the heat exchange tubes are arranged in double, the tube is narrowed and the heat medium flow path is formed between the tubes. The chamber and the chamber facing each other, and both sides are respectively coupled to the chamber and the inner wall of the chamber, and the plurality of outer pipes communicating the chamber and the chamber, penetrating the interior of the outer pipe, and both sides being penetrated to the chamber and the outer wall of the chamber. It is composed of a plurality of inner pipes, and the assembly of the chamber (tube sheet, tube plate) and the heat exchange tube (pipe) is fixed by welding. Therefore, since the heat medium flow path cannot be opened from the outside, it is difficult to repair or clean the heat exchanger.

For example, if a heat exchanger is manufactured and a leak occurs after installation, the heat exchanger tube must be separated to replace or repair the heat exchanger tube. However, it is difficult to repair the heat exchanger because it is difficult to separate the heat exchanger tube from the double tube heat exchanger made by welding. When used for a long time, a contaminant layer that interferes with heat transfer is generated, and if left unchecked, the flow path of the working fluid is narrowed, which increases the load on the pump. Due to the problem that the heat exchanger performance is reduced and the service life is shortened due to the formation, it is necessary to periodically clean to solve these problems, but the double tube heat exchanger manufactured by fixing the chamber and the heat exchanger by welding can open the inner surface of the heat exchanger tube. Since it cannot be cleaned by mechanical and physical methods, chemical cleaning also has a problem in cleaning due to the small space due to the double heat exchanger tube.

The present invention (draft) is an invention devised to solve the conventional problems as described above, and for this purpose, a heat exchange tube is chambered using a fitting device attached to a chamber (tube sheet, tube plate) and a heat exchange tube (tube, pipe). The purpose of this is to provide a finless type multi-tube type double tube heat exchanger that facilitates maintenance and cleaning by simplifying the structure to separate and clean the heat exchanger tube to facilitate the repair and replacement of the heat exchanger tube by assembling to There is this.

In the present invention for achieving this object,

A plurality of inner pipes coupled to both ends of the first second coupling body forming a hollow portion to communicate with the inner pipes

One region is formed in the insertion space of the first and second combinations and surrounds the outer peripheral surface

A third fourth coupling body having one end penetratingly coupled to the outer walls of the first and second chambers,

A plurality of outer pipes having both ends penetratingly coupled to the inner walls of the first chamber and the second chamber to communicate the first chamber and the second chamber,

A third fourth coupling body penetrating through the inside of the outer pipe, and having both sides penetratingly attached to the outer walls of the first chamber and the second chamber, and a plurality of inner pipes inserted through,

The third fourth coupling body is a first region having an inner circumferential cross-section extending from the first region and surrounding the outer circumferential surface of the first and second coupling bodies, and the inner circumferential surface to limit movement of the first and second coupling bodies A second region having a second diameter smaller than the first diameter and having a first cross-section is formed at an end thereof.

In addition, the second region includes a sealing portion provided in the insertion space so as to be positioned between the inner end of the first and second coupling bodies facing each other in the linear direction and the end of the third and fourth coupling bodies, and one or more O-rings or one The gasket is inserted abnormally,

The first and second coupling bodies of the inner pipe inserted through the third and fourth coupling bodies attached to the outer wall of the first chamber are rotated in close contact with bolts or nuts for inner pipe coupling from the outside of the first and second chambers through threads formed on both sides. By doing so, the pressure is applied to the binding end of the coupling body, so that the O-ring or gasket in the sealing portion is compressed, so that the connection and sealing of the inner pipe connection of the first chamber and the second chamber are simultaneously performed.

As an example related to the present invention, the first second coupling body coupled to the plurality of inner pipes, and the third fourth coupling body to be coupled through the outer walls of the first chamber and the second chamber are connected by a welding method.

As an example related to the present invention, the binding and sealing of the first second coupling body coupled with the plurality of inner pipes and the third and fourth coupling bodies penetrating through the outer walls of the first and second chambers are coupled with each other to screw each other. A thread corresponding to one end is formed.

The assembly method of the assembly for achieving the object of the present invention includes the steps of welding one end of the first second assembly having the first hollow communicating with the inner pipe and both ends of the inner pipe, the first material 2 A step of through-welding one end of the third and fourth coupling bodies formed to be able to engage with the outer peripheral surface of the coupling body to the outer walls of the first chamber and the second chamber,

Step of fitting the first and second coupling bodies coupled to both ends of the inner pipe into the inside of the third and fourth coupling bodies penetrated to the outer walls of the chamber and the second chamber, and screwing the first and second coupling bodies with nuts or bolts. Includes.

As an example related to the present invention, the first chamber and the second chamber are respectively penetrated through the outer wall, and when the first and second coupling bodies are combined, the sealing portion provided in the third and fourth coupling body insertion space is located in the chamber where the heating medium is accommodated. It is characterized in that the sealing portion is protected from the high temperature heat source when the high temperature heat source is transferred to the inner surface of the inner pipe.

The present invention as described above (draft) is an invention devised to solve the conventional problems as described above, and for this purpose, heat exchange using a fitting device attached to a chamber (tube sheet, tube plate) and a heat exchange tube (tube) Pinless type that facilitates maintenance and cleaning by simplifying the structure to separate and clean the heat exchanger tube for easy repair and replacement of the heat exchanger tube as well as to facilitate the repair and replacement of the heat exchanger tube by assembling the tube into the chamber (tube sheet, tube plate). It is a very useful invention for industrial development as a multi-tube heat exchanger.

1. The unit for a heat exchanger according to an embodiment according to the invention (draft)
Figure 2. Heat exchanger according to the invention (draft)
Figure 3 is an exploded perspective view of the inner pipe nut type coupling structure according to an embodiment of the present invention.
Figure 4 is an exploded perspective view of the configuration of the inner pipe bolt type coupling according to another embodiment of the present invention.
5. A perspective view and a cross-sectional view showing an assembly structure of an inner pipe nut type heat exchanger according to an embodiment of the present invention.
Fig. 6 is an enlarged view showing an enlarged section B of Fig. 5;
Fig. 7 is an enlarged view showing an enlarged section C of Fig. 5;
Fig. 8. A perspective view and a cross-sectional view showing the assembly structure of the inner pipe bolt type heat exchanger according to another embodiment of the present invention.
Fig. 9 is an enlarged view showing an enlarged section B in Fig. 8;
Fig. 10 is an enlarged view showing an enlarged section C of Fig. 8;
Figure 11 is a perspective view and a cross-sectional view showing an assembly structure that is coupled to the outer wall of the first chamber and the second chamber of the third fourth coupling body according to an embodiment of the present invention.
Fig. 12 is a perspective view and a cross-sectional view of the assembly structure and components of the silver bone 1-chamber nut assembly.
Figure 13. 1 Chamber bolt type assembly assembly structure and parts perspective and cross-sectional view.
Figure 14. Two-chamber bolt assembly assembly structure and parts perspective and sectional views.

Hereinafter, a finless type multi-tube type double tube heat exchanger equipped with a fitting device for coupling a tube (heat exchange tube) according to the present invention will be described in detail with reference to the drawings.

Before describing in more detail the finless type multi-tube type double tube heat exchanger equipped with the tube (heat exchange tube) fitting device of the present invention,

The present invention can be applied to a variety of changes and can have a variety of forms, the implementation (態樣, aspect) (or embodiments) to describe in detail in the text. However, this is not intended to limit the present invention to a specific disclosure form, and it should be understood that it includes all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

The same reference numbers in each drawing, especially the number of tens and ones, or the same number of tens, ones and alphabets refer to members having the same or similar functions, and unless otherwise specified, The member indicated by the reference numeral can be understood as a member conforming to these standards.

In addition, in each drawing, the components are exaggeratedly large (or thick) or smallly (or thinly) or simplified to express the size or thickness in consideration of convenience, etc., thereby limiting the protection scope of the present invention. It should not be.

The terminology used herein is only used to describe a specific embodiment (sun, 態樣, aspect) (or embodiment), and is not intended to limit the present invention.

Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as ~include~ or ~consist of~ are intended to designate the existence of features, numbers, steps, operations, components, parts or combinations thereof described in the specification, and one or more other features. It should be understood that the existence or addition possibilities of fields or numbers, steps, actions, components, parts or combinations thereof are not excluded in advance.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains. Terms such as those defined in a commonly used dictionary should be interpreted as having meanings consistent with meanings in the context of related technologies, and should not be interpreted as ideal or excessively formal meanings unless explicitly defined in the present application. Does not.

As shown in the drawing, a finless type multi-tube type double tube heat exchanger equipped with a fitting device for coupling a tube (heat exchange tube)

Inner pipe coupled to both ends of the first (110) second (120), (100)

3 (130) 4 (140) 1 chamber 210 and 2 chambers, one end of which is coupled, 220

It is composed of bolts 110, 120, nuts 101, 201 that are screwed to both ends of the inner pipe 100.

Figure 2 is a perspective view and a cross-sectional view showing a heat exchanger perspective view according to the invention (coast) and Figure 5 is an inner pipe nut type assembly heat exchanger assembly structure according to the embodiment of the present invention in Figure 2 and Figure 3 is shown in Figure 5 Figure 6 is an exploded perspective view showing an exploded view of the configuration of the inner pipe nut type assembly according to an embodiment, Figure 6 Figure 7 is an enlarged view showing an enlarged portion of B and C of Figure 5, Figure 11 is according to one embodiment It is a perspective view and a cross-sectional view showing an assembly structure that is penetrated to the outer walls of the first chamber and the second chamber of the third fourth assembly.

5 and 12, a finless type multi-tube type heat exchanger equipped with a fitting device for coupling a tube (heat exchange tube) is provided with a first (110) second (120) coupling inside the inner pipe (100). Welding at both ends, the third (130), the fourth (140), the one end of the assembly through the first chamber 210 and the second chamber 220, the outer wall welding step, the first chamber 210 and the second chamber 220 outer wall The third (130) and fourth (140) coupled to the inside of the coupling body are coupled to both ends of the inner pipe 100.

The first (110) second (120) fitting, the first (110) second (120) coupling and the third coupling (130) outer circumferential surface bolt 130 and the second coupling 120 formed on one end surface It consists of a step of screwing the nut 101 and 201 with a bolt 202 formed at one end.

In more detail, the first (110) and second (120) coupling bodies forming a hollow portion to communicate with the inner pipe 100 are provided with a plurality of inner pipes 100 coupled to both ends.

One region is formed of the insertion space of the first (110) second (120) combination and surrounds the outer circumferential surface (131)

One end portion of the first chamber 210 and the second chamber 220, the third 130 is coupled through the outer wall

The fourth (140) combination,

A plurality of outer pipes 300, both ends of which are respectively coupled to the inner walls of the first chamber 210 and the second chamber 220 to communicate the first chamber 210 and the second chamber 220,

The third pipe 130 penetrates the inside of the outer pipe 300, and the ends of the third chamber 130 and the fourth 140 are attached to the outer walls of the first chamber 210 and the second chamber 220, respectively. A plurality of inner pipes 100,

The third (130) fourth (140) combination has a first area (131) having an inner circumferential cross section having a first diameter so as to surround the outer circumferential surface (131) of the first (110) second (120) combination, the first The cross section of the inner circumferential surface has a second diameter smaller than the first diameter so as to extend from the first region 131 and limit and bind the movement of the first (110) second (120) coupling body. The second region 132 to which the second 120 coupling body is connected is formed.

In addition, the inner side end 133 and the third side 130 and the fourth side 140 of the first and second side 120 facing the first region 131 facing each other in a straight line direction are inside. Located between the end portion 133 and includes a sealing portion 144 and 133 provided in the insertion space, and one or more O-rings 112, 121 or one or more gaskets 111 and 122 are inserted,

The first (110) second (120) coupling of the inner pipe (100) inserted through the third (130) fourth (140) coupling attached to the outer wall of the first chamber (210) of the second coupling outer peripheral surface The inner pipe 100 from the outside of the first chamber 210 and the second chamber 220 through the threads 131 and 202 formed at one end of the outer circumferential surface of one end and the third assembly,

O-ring in the sealing portion 131, 114 by applying pressure to the binding end 133, 134 of the coupling body 110, 120, 130, 140 by rotationally close contact with the coupling nut 101, 201 (112) (121) or the gasket (111) (122) is compressed so that the connection and sealing of the inner pipe (100) coupling body (110) 120 of the first chamber (210) and the second chamber (220) at the same time Is done.

According to an embodiment of the present invention, the first (110) second (120) coupling body coupled with the plurality of inner pipes (100), the first chamber (210), the second chamber (220), the third through-coupled to the outer wall 130) The fourth (140) combination is connected by a welding method.

According to an embodiment of the present invention, the first (110) second (120) coupling body coupled with the plurality of inner pipes (100), the first chamber (210), the second chamber (220), the third through-coupled to the outer wall 130)

The fourth 140 coupling body is formed with threads corresponding to one end portions 101, 130, 120, and 201 that are engaged with each other to screw each other.

According to an embodiment of the present invention, the first (210) and the second chamber (220) respectively penetrate the outer wall of the first (110) second (120) when the third coupling (130), fourth ( 140) The sealing part 144, 133 provided in the insertion space of the assembly is positioned in the chamber 210, 220 where the heat medium 211, 221 is accommodated, so that a high temperature heat source is provided on the side of the inner pipe 100. It is characterized in that to protect the sealing portion (144, 133) from the heat source of high temperature when transmitted.

On the other hand, the fitting device for tube connection of the above configuration is only a preferred embodiment of the present invention and there may be various embodiments that can replace them.

Figure 8 is a perspective view and a cross-sectional view showing the assembly structure of the inner pipe 100, bolted coupling body 110, 120, 130, 140 according to another embodiment of the present invention, Figure 4 is an embodiment shown in Figure 8 The inner pipe 100 is an exploded perspective view showing an exploded view of the configuration of the bolt type coupling, and FIGS. 9 and 10 are enlarged views showing enlarged portions of B and C of FIG. 8, and FIG. It is a perspective view and a cross-sectional view showing an assembly structure penetrated to the outer walls of the first chamber and the second chamber of the third fourth coupling body according to the present invention.

13 Referring to FIG. 14, a finless type multi-tube double tube heat exchanger equipped with a fitting device,

Inner pipe coupled to both ends of the first (110) second (120) assembly, (100)

3 (130) 4 (140) 1 chamber 210 and 2 chambers, one end of which is coupled, 220

Consists of a nut (130) (201) screwed with a bolt (110) (120) at both ends of the inner pipe (100).

8 is a perspective view and a cross-sectional view showing an assembly structure of a heat exchanger of an inner pipe 100 according to an embodiment of the present invention, and FIG. 3 is a configuration of an inner pipe 100 bolted assembly according to an embodiment shown in FIG. Is an exploded perspective view showing an exploded view, and FIG. 6 and FIG. 7 are enlarged views of parts B and C of FIG. 5, and FIG. 11 is a third (130) fourth (140) combination according to an embodiment It is a perspective view and a cross-sectional view showing an assembly structure that is penetrated to the outer walls of the first chamber 210 and the second chamber 220,

Hereinafter, other embodiments of the present invention will be described with reference to FIGS. 12 and 14.

Welding the first (110) second (120) assembly to both ends of the inner pipe (100), one end of the third (130) fourth (140) assembly to the outer walls of the first chamber (210) and the second chamber (220) Through welding, the first chamber 210 and the second chamber 220 are coupled to both ends of the inner pipe 100 into the inside of the third (130) fourth (140) coupling body through the outer wall.

The first (110) second (120) coupling member is fitted, and the bolts (136) 202 and the third coupling body 130 inner peripheral surface 131 formed at one end of the outer peripheral surface of the first (110) second (120) coupling body It consists of a step of screwing the nut 131 formed on one end and the coupling fastening nut 201.

In more detail, the first (110) and second (120) coupling bodies forming a hollow portion to communicate with the inner pipe 100 are provided with a plurality of inner pipes 100 coupled to both ends.

One region is formed of the insertion space of the first (110) second (120) combination and surrounds the outer circumferential surface (131)

One end portion of the first chamber 210 and the second chamber 220, the third 130 is coupled through the outer wall

The fourth (140) combination,

A plurality of outer pipes 300, both ends of which are respectively coupled to the inner walls of the first chamber 210 and the second chamber 220 to communicate the first chamber 210 and the second chamber 220,

The third pipe 130 penetrates the inside of the outer pipe 300, and the ends of the third chamber 130 and the fourth 140 are attached to the outer walls of the first chamber 210 and the second chamber 220, respectively. A plurality of inner pipes 100,

The third (130) fourth (140) combination has a first area (131) having an inner circumferential cross section having a first diameter so as to surround the outer circumferential surface (131) of the first (110) second (120) combination, the first The cross section of the inner circumferential surface has a second diameter smaller than the first diameter so as to extend from the first region 131 and limit and bind the movement of the first (110) second (120) coupling body. The second region 132 to which the second 120 coupling body is connected is formed.

In addition, the inner side end 133 and the third side 130 and the fourth side 140 of the first and second side 120 facing the first region 131 facing each other in a straight line direction are inside. Located between the end portion 133 and includes a sealing portion 144 and 133 provided in the insertion space, and one or more O-rings 112, 121 or one or more gaskets 111 and 122 are inserted,

The first (110) second (120) coupling body of the inner pipe (100) inserted through the third (130) fourth (140) coupling body attached to the outer wall of the first chamber (210) has a first outer peripheral surface of the first coupling body And the second assembly through the threads 131 and 202 formed at one end of the outer circumferential surface from the outside of the first chamber 210 and the second chamber 220.

By rotating the inner pipe 100 with a bolt 136 of the first coupling body 110 for coupling, the third 130 coupling body is bound, and the second 120 coupling body is the coupling fastening nut 201 at the outer wall of the two chamber. When the rotation is engaged, pressure is applied to the end portion, so that the O-ring 112, 121, or gasket 111, 122 in the sealing portion is compressed, so that the connected inner pipe 100 of the first chamber 210 and the second chamber 220 is compressed. ) The coupling and sealing of the coupling bodies 110 and 120 are simultaneously performed.

According to an embodiment of the present invention, the first (110) second (120) coupling body coupled with the plurality of inner pipes (100), the first chamber (210), the second chamber (220), the third through-coupled to the outer wall 130) The fourth (140) combination is connected by a welding method.

According to an embodiment of the present invention, the first (110) second (120) coupling body coupled with the plurality of inner pipes (100), the first chamber (210), the second chamber (220), the third through-coupled to the outer wall 130)

The fourth 140 coupling body is formed with threads corresponding to one end portions 101, 130, 120, and 201 that are engaged with each other to screw each other.

According to an embodiment of the present invention, the first (210) and the second chamber (220) respectively penetrate the outer wall of the first (110) second (120) when the third coupling (130), fourth ( 140) The sealing part 144, 133 provided in the insertion space of the assembly is positioned in the chamber 210, 220 where the heat medium 211, 221 is accommodated, so that a high temperature heat source is provided on the side of the inner pipe 100. It is characterized in that to protect the sealing portion (144, 133) from the heat source of high temperature when transmitted.

In the above description of the present invention, a finless type multi-tube type double tube heat exchanger equipped with a fitting device for coupling a tube (heat exchange tube) having a specific shape and structure has been described with reference to the accompanying drawings. Various modifications and changes are possible by, and such modifications and changes should be interpreted as belonging to the protection scope of the present invention.

<Name of the sign for the main part of the drawing>
1: Heat exchanger unit
10: heat exchanger
100: inner pipe
101: the first coupling member and the third coupling nut
110: first binding body
111: first assembly gasket 112: first assembly O-ring
120; 2nd assembly 121: 2nd assembly O-ring
122: first assembly gasket
130: third binding body
140: fourth conjugate
201: the second assembly and the fourth assembly fastening nut
210: first chamber 220: second chamber
211: first chamber heat medium space 221: second chamber heat medium space
300: outer pipe

Claims (6)

A plurality of inner pipes 100 having first, second, and second 120 coupling bodies forming hollow portions to communicate with the inner pipes 100 coupled to both ends
An area where an insertion space of the first (110) second (120) coupling body is formed, surrounds the outer circumferential surface (131), and has one end penetrating through the outer walls of the first chamber (210) and the second chamber (220). 130) 4th (140) conjugate,
A plurality of outer pipes 300, which are both coupled to the inner walls of the first chamber 210 and the second chamber 220 to communicate the first chamber 210 and the second chamber 220, respectively, and the outside Penetrating through the interior of the pipe 300, both ends are attached to the outer wall of the first chamber 210 and the second chamber 220, the third (130) fourth (140) assembly, and a plurality of penetrations Inner pipe (100),
The third (130) fourth (140) combination has a first area (131) having an inner circumferential cross section having a first diameter so as to surround the outer circumferential surface (131) of the first (110) second (120) combination, the first The cross section of the inner circumferential surface has a second diameter smaller than the first diameter so as to extend from the first region 131 and limit and bind the movement of the first (110) second (120) coupling body. A second region 132 to which the second 120 coupling body is connected is formed,
In addition, the inner side end 133 and the third side 130 and the fourth side 140 of the first and second side 120 facing the first region 131 facing each other in a straight line direction are inside. Located between the end portion 133 and includes a sealing portion 144 and 133 provided in the insertion space, and one or more O-rings 112, 121 or one or more gaskets 111 and 122 are inserted,
The first (110) second (120) coupling of the inner pipe (100) inserted through the third (130) fourth (140) coupling attached to the outer wall of the first chamber (210) of the second coupling outer peripheral surface Rotational contact with the inner pipe 100 from the outside of the 1st chamber 210 and the 2nd chamber 220 through the threads 131 and 202 formed at one end of the outer circumferential surface of the one end and the third coupling body with the coupling nuts 101 and 201 By doing so, pressure is applied to the binding ends 133 and 134 of the coupling bodies 110, 120, 130, 140, and the O-ring 112, 121, or gasket 111 in the sealing portion 131, 114 ( 122) is compressed, the first chamber 210 and the second chamber 220 of the connected inner pipe 100, the coupling 110 and 120 of the tube (heat exchange pipe) fitting device is made at the same time the pin is provided with a fitting device Lease type multi-tube double tube heat exchanger According to claim 1, wherein the third (130) fourth (140) combination
The first (110) second (120) first inner surface (131) having a first diameter cross-section so as to surround the outer peripheral surface (131) of the coupling body and the first area (131) extending from the first (110) A second region 132 having a second diameter smaller than the first diameter and having a second diameter of a cross section of the inner circumferential surface so as to limit and bind the movement of the second 120 assembly. Finless type multi-tube type double tube heat exchanger equipped with a tube (heat exchange tube) fitting device characterized in that it is formed The first (110) second (120) combination and the third (130) fourth (140) combination are first (110) agents facing each other in a linear direction to the first region (131). 2 (120) located between the outer inner end (133) of the coupling body and the lateral side end (133) of the third (130) fourth (140) coupling body is provided with a sealing portion (144) (133) provided in the insertion space. Included and one or more O-ring (112) (121) or one or more gaskets (111) (122) is inserted into the tube (heat exchange pipe) fittings equipped with a fitting device equipped with a finless type multi-tube type double tube row Exchange The first (110) second (120) coupling of the inner pipe (100) inserted through the third (130) fourth (140) coupling attached to the outer wall of the first chamber (210) of the second coupling outer peripheral surface Rotational contact with the inner pipe 100 from the outside of the 1st chamber 210 and the 2nd chamber 220 through the threads 131 and 202 formed at one end of the outer circumferential surface of the one end and the third coupling body with the coupling nuts 101 and 201 By doing so, pressure is applied to the binding ends 133 and 134 of the coupling bodies 110, 120, 130, 140, and the O-ring 112, 121, or gasket 111 in the sealing portion 131, 114 ( 122) is compressed, the first chamber 210 and the second chamber 220 of the connected inner pipe 100, the coupling 110 and 120 of the tube (heat exchange pipe) fitting device is made at the same time the pin is provided with a fitting device Lease type multi-tube double tube heat exchanger The first (110) second (120) coupling body of the inner pipe (100) inserted through the third (130) fourth (140) coupling body attached to the outer wall of the first chamber (210) has a first outer peripheral surface of the first coupling body And the second assembly through the threads 131 and 202 formed at one end of the outer circumferential surface of the first and second chambers 210 and 220.
By rotating the inner pipe 100 with a bolt 136 of the first coupling body 110 for coupling, the third 130 coupling body is bound, and the second 120 coupling body is the coupling fastening nut 201 at the outer wall of the two chamber. When the rotation is engaged, pressure is applied to the end portion, and the inner ring 100 connected to the first chamber 210 and the second chamber 220 is compressed by compressing the O-ring 112, 121, or gasket 111, 122 in the sealing portion. ) Tubes (heat exchange pipes) that are combined and sealed at the same time as the coupling bodies (110, 120). Each of the first chamber 210 and the second chamber 220 penetrates the outer wall and is provided in the third (130) fourth (140) assembly insertion space when the first (110) second (120) combination is coupled. The sealing portion 144 is placed when the heat medium is transferred to the side of the inner pipe 100 by placing the sealing portion 144 and 133 within the chamber 210 and 220 in which the heat medium 211 and 221 are accommodated. A finless type multi-tube double tube heat exchanger equipped with a tube (heat exchange tube) fitting device characterized in that the 133 is protected from a high temperature heat source.

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