KR102199698B1 - Manufacturing method of heat-exchanging module for a shell and tube type heat-exchanger - Google Patents

Abstract

The present invention relates to a method for manufacturing a heat exchange module for a shell and tube-type heat exchanger in which dozens to hundreds of heat transfer tubes are connected and installed in a hexahedral block shape by at least two or more quadrangular diaphragms. More specifically, the method uses at least three divided diaphragms according to the height direction of the heat exchange module, has tube mounting grooves having a semicircular shape and provided on the divided surfaces of the diaphragms to engage with heat transfer tubes, primarily and temporarily assembles a heat exchange module by stacking the divided diaphragms in the height direction so that the heat transfer tubes can be placed between the tube mounting grooves, and inserts the heat exchange module into a heating furnace with the temporarily assembled heat exchange module vertically clamped, so as to thermally fuse the divided diaphragms together with the heat transfer tubes, thereby manufacturing the heat exchange module. Therefore, compared to the conventional welding method for directly welding heat transfer tubes with diaphragms, the method can produce a high-quality heat exchange module that does not cause welding defects or tube damage, and enables the overall production process of the heat exchange module to be performed more easily, even when compared to the conventional tube expansion method for expanding the diameter of each heat transfer tube, and ultimately excludes, to the maximum, operations requiring skilled technology such as welding or pipe expansion, thereby allowing mass-production of the heat exchange module and reducing costs.

Description

Manufacturing method of heat-exchanging module for a shell and tube type heat-exchanger}

The present invention relates to a method of manufacturing a heat exchange module for a shell-and-tube type heat exchanger in which several tens to several hundred heat transfer tubes are connected in a hexahedral block shape by at least two or more square diaphragms, wherein each of the diaphragms is a height direction of the heat exchange module According to the above, it is divided into at least three or more, but each partition plate is provided with a tube mounting groove in a semicircular shape that meshes with each heat transfer tube on the divided surface of the corresponding plate, and a heat transfer tube is placed between the tube mounting grooves. The heat exchange module is first temporarily assembled by stacking the heat exchanger module in the height direction, and then the heat exchange module is inserted into the heating furnace while the heat exchange module is clamped in the vertical direction. It relates to a method of manufacturing a heat exchange module for a shell-and-tube type heat exchanger so that a heat exchange module can be manufactured by thermally fused together.

In general, the shell-and-tube type heat exchanger 1 has a plurality of (five in the drawing) vertical plates 11 installed in the inner space of the heat exchange tank 2 at a predetermined interval, as shown in FIG. , A plurality of heat transfer tubes 9 are installed to pass through each of the diaphragms 11 in a horizontal direction at regular intervals, and on the outer circumferential surface of the heat exchange tank 2, a material for the flow of the heat transfer fluid (the heat transfer fluid). The first inlet pipe 3 and the first discharge pipe 4 are connected to each other, and the front and rear surfaces of the heat exchange tank 2 have a second inlet pipe 5 for the flow of the heat to be transferred (heat transfer fluid). ) And the second discharge pipe 6 are connected to each other with the inlet chamber 7 and the discharge chamber 8 interposed therebetween.

Accordingly, the heat transfer fluid (heat transfer fluid) exiting from the first inlet pipe 3 to the first discharge pipe 4 through the inner space of the heat exchange tank 2, the second inlet pipe 5 and the inlet chamber 7 ), heat exchange with the heat transfer fluid (heat transfer fluid) exiting from the discharge chamber 8 and the second discharge tube 6 through each heat transfer tube 9, and the heat transfer tube 9 in the diaphragm 11 Heat transfer fluid flowing into the inside of the heat exchange tank 2 from the first inlet pipe 3 on the top or bottom surface of the other diaphragm 11 except for the diaphragm 11 disposed at the front and rear ends of the The flow path adjustment groove 12 is provided so that the flow path of fluid) can be formed into a zigzag-type path in the vertical direction.

As described above, the diaphragm 11 and the heat transfer tube 9 as the heat exchange module 10 installed inside the heat exchange tank 2 of the shell-and-tube heat exchanger 1 are cylindrical blocks in accordance with the external shape of the heat exchange tank 2. However, as shown in FIG. 2, a plurality of (16 in the drawing) heat transfer tubes 9 are connected to each other by a rectangular diaphragm 11, and a hexahedral block-shaped heat exchange module 10 is formed. , Each of the heat transfer tubes 9 are arranged in parallel at a predetermined interval to provide a flow path for the fluid (heat transfer fluid or heat source fluid) flowing into the heat exchange tank 2, and each heat transfer tube 9 The area where) passes through the diaphragm (11) must be treated with watertight or airtight (氣密).

As described above, as a conventional method of manufacturing the heat exchange module 10 for the shell-and-tube heat exchanger 1 so that water-tight or airtight treatment can be performed at each part where each heat transfer tube 9 passes through the diaphragm 11, A welding method in which the heat transfer tube 9 and the diaphragm 11 are directly welded over the area where the heat transfer tube 9 passes through the diaphragm 11, and heat exchange so that each heat transfer tube 9 passes through the diaphragm 11 As the diameter (outer diameter) of each heat transfer tube 9 is expanded while the module 10 is initially set, the outer peripheral surface of each heat transfer tube 9 is in close contact with the inner peripheral surface of the tube through hole formed in the diaphragm 11. A typical example is the expansion method.

However, in the conventional welding method as described above, due to the structural characteristics of the heat exchange module 10 installed so that tens to hundreds of heat transfer tubes 9 pass through the diaphragm 11 with a tight arrangement interval, each heat transfer tube 9 ), welding the heat transfer tube (9) and the diaphragm (11) along the penetrating part of the heat transfer tube (9) and the diaphragm (11) was a very difficult and difficult problem. As a result, the quality of the heat exchange module 10 is greatly degraded, and during the welding operation, the heat transfer tube 9 made of a material such as copper (Cu) or a copper alloy is welded to a tube such as a welding crack or a welding perforation (穿孔). There was a problem that damage easily occurred.

In the existing expansion method proposed to solve the above problems of the welding method, expansion equipment such as a hydraulic hose, a hydraulic hose, or a hydraulic cylinder is used while the expansion ball is inserted inside the inlet of the heat transfer tube 9 Therefore, not only must the difficult work of pushing the corresponding expansion ball along the heat transfer tube 9 must be accompanied, but this expansion work must be carried out individually and without omission for each heat transfer tube 9 corresponding to several tens to several hundred. As a result, there is a problem that the manufacturing period and manufacturing cost of the heat exchange module 10 are greatly increased.

In particular, it was quite difficult to secure enough watertight performance or airtight performance by making the outer circumferential surface of each heat transfer tube 9 close to the inner circumferential surface of the tube through hole of the diaphragm 11 according to the existing expansion method. In areas where watertight performance or airtightness was not sufficiently secured, there was an unreasonable problem in that a separate welding work for the penetrating part of the heat transfer tube 9 was additionally performed, and both the existing welding work and the expansion work required skilled skills. Since it becomes a tricky operation, it has become a significant obstacle in terms of realizing mass production and cost reduction of the shell-and-tube type heat exchanger 1 including the heat exchange module 10.

The present invention was conceived to solve the conventional problems as described above, and each partition plate is divided into at least three or more along the height direction of the heat exchange module, and it fits with each heat transfer tube on the divided surface of the corresponding plate. The heat exchange module is first temporarily assembled by stacking each of the partition plates in the height direction so that a semicircular tube mounting groove is provided and a heat transfer tube is placed between the tube mounting grooves, and then the temporary assembly of the heat exchange module. Existing welding method in which each heat transfer tube is directly welded to the diaphragm by inserting the corresponding heat exchange module into the interior of the heating furnace while clamping in the up and down directions to heat-fuse each split plate together with the heat transfer tube. Compared with, it is possible to produce high-quality heat exchange modules without welding defects or tube damage, and watertight or airtightness of the penetration part of the heat transfer tube even when compared with the existing expansion method that expands the diameter of each heat transfer tube. The main technical task is to provide a method for manufacturing a heat exchange module for a shell-and-tube type heat exchanger so that the overall production process of the heat exchange module can be performed more easily and easily while ensuring sufficient performance.

In addition, the present invention provides a vertical to the mounting object as a rectangular rod-shaped horizontal frame arranged one by one at the left and right ends of the partitioning plate, with a plurality of setting bars made of a frame having a "c"-shaped cross section for the stacking operation of the partitioning plate. By providing a setting mechanism for the heat exchange module, which is connected and installed in the direction, and the bracket as a square bar-shaped frame supporting the left and right holders from the bottom is connected and installed at the front and rear ends of the holder, respectively, the partition plate and the heat transfer tube The process from the temporary assembly of the heat exchange module to the clamping of the pre-assembled heat exchange module can be performed more quickly and accurately, while adjusting the position of the setting bar and adjusting the length of the pedestal. The setting mechanism enables temporary assembly and clamping work of heat exchange modules having various dimensions. Through this, work that requires skilled skills such as welding work or expansion work is eliminated to the maximum and the overall production process of the heat exchange module is further improved. Another technical task is to achieve mass production and cost reduction of a shell-and-tube type heat exchanger including a heat exchange module by making it easier and easier to perform.

In the present invention as a means for solving the above technical problem, several tens to several hundred heat transfer tubes are arranged in parallel in the up, down and left and right directions at regular intervals, and each of the heat transfer tubes is at least 2 In the manufacturing method of a heat exchange module for a shell-and-tube type heat exchanger connected in a hexahedral block shape by means of at least two rectangular plates, each of the plates is arranged in a height direction of at least three or more including an upper plate, a joint plate, and a lower plate. Divided by the number, the division plate manufacturing step of forming a semi-circular tube mounting groove that is engaged with each of the heat transfer tubes over the divided surfaces of the upper plate, the joint plate, and the lower plate to correspond up and down; The joint plate and the upper plate are sequentially butted from the lower plate along the height direction of the heat exchange module according to the position where each partition plate is placed, and the tube mounting groove provided on the divided surface of the upper plate and the joint plate and the lower plate Temporary assembly step of a heat exchange module so that the heat transfer tubes are engaged and mounted every time; The cover plate and the bottom plate covering the upper and lower surfaces of the pre-assembled heat exchange module are arranged across the upper and lower plates of each partition plate, and then a rod-shaped vertically penetrating the edges of the cover plate and the bottom plate. A heat exchange module clamping step of clamping a temporary assembled heat exchange module in an up and down direction using a clamping bolt and a clamping nut fastened to an end of the clamping bolt; The top of each partition plate is formed by charging the cover plate, the bottom plate, the heat exchange module clamped by the clamping bolt and the clamping nut into the inside of the heating furnace, and then maintaining it for 10 to 30 minutes under a temperature condition of 450 to 850°C. A heat exchange module heat fusion step of allowing the plate, the joint plate, and the lower plate to be thermally fused with a heat transfer tube interposed therebetween; A clamper separating step of removing the heat exchange module clamped by the cover plate, the bottom plate, the clamping bolt and the clamping nut from the heating furnace and slowly cooling it under room temperature conditions, and then separating the cover plate and the bottom plate, the clamping bolt and the clamping nut from the heat exchange module; The cover plate, the bottom plate, the clamping bolt and the clamping nut are a metal material that does not undergo heat fusion under a temperature condition of 450 to 850°C, or a metal made of heat-resistant coating that prevents heat fusion under the corresponding temperature condition. It is characterized by being made of material.

In addition, in the temporary assembly of the heat exchange module, a setting mechanism dedicated to the heat exchange module is used, and the setting mechanism includes a setting bar for a stacked setting operation of each partition plate, a holder for supporting the setting bar, and a support for the holder. The setting bar is a vertical frame of a "c"-shaped cross-section into which both ends of the partition plate are inserted, and the height of the setting bar is within the range of 85 to 95% of the height of the partition plate, while the The insertion width of the partition plate provided by the inner side of the setting bar is formed to be larger than the thickness of the partition plate within the range of 0.5 to 1.5mm, and the holder is a square bar-shaped frame to which the lower side of the setting bar is connected to the left side of the partition plate. ,A total of two, one at the right end, are arranged in the longitudinal direction of the heat exchange module, and the setting bars are installed in at least two for each cradle, while the cradle has the front and rear ends of the left and right cradles at the top. It is characterized in that it is arranged in the width direction of the heat exchange module as a square bar-shaped frame placed on the surface, and the partition plate and the setting bar are installed in at least three numbers over the length direction of the heat transfer tube and the holder, and the partition plate A flow path adjustment groove is formed on the upper or lower surface of the partition plate except for the partition plate located at the front and rear ends of the heat transfer tube, and the flow channel adjustment groove is on the left or right side of the upper or lower surface of the partition plate. The rest of the part except the end part is cut to a predetermined depth, and the insertion depth of the partition plate provided by the inner side of the setting bar is 1/3 to 2 of the length of the left and right ends of the partition plate excluding the flow path adjustment groove. It is characterized in that it falls within the range of /3, and each of the setting bars is installed to be adjustable in position along the length direction of the corresponding cradle, and each of the pedestal is characterized in that it is a telescopic frame capable of adjusting the length. .

According to the present invention as described above, in a state in which the existing rectangular diaphragm for supporting the heat transfer tube is divided into an upper plate, a joint plate, and a lower plate having a tube mounting groove, each divided plate is divided into several tens to hundreds of heat transfer plates. As the heat exchange module is manufactured by temporarily assembling and clamping the heat exchange module so that it engages with the tube, and then inserting it into the interior of the heating furnace and heat-sealing each partition plate together with the heat transfer tube, compared to the conventional welding method. Provides the effect of producing high quality heat exchange modules without welding defects or tube damage, and sufficient watertight or airtight performance for the area where each heat transfer tube passes through the diaphragm, even when compared with the existing expansion method. While securing, the overall production process of the heat exchange module provides an effect that can be performed more easily and easily.

In particular, in the case of using a setting mechanism dedicated to the heat exchange module including the setting bar, the holder, and the pedestal, the work process from the temporary assembly step of the heat exchange module to the clamping step of the heat exchange module can be performed more quickly and accurately. On the other hand, in the case where the position of the setting bar and the length of the pedestal can be adjusted, a single setting mechanism provides the effect of performing temporary assembly and clamping of heat exchange modules having various dimensions, through which By eliminating the work that requires skilled skills such as the existing welding work or expansion work as much as possible, and making the whole production process of the heat exchange module easier and easier to perform, mass production of shell and tube heat exchangers including heat exchange modules and It provides very useful effects such as being able to achieve cost reduction.

1 is a side cross-sectional view showing a shell and tube heat exchanger.
2 is an exterior perspective view showing a heat exchange module for a shell and tube heat exchanger.
3 is a process block diagram showing a method of manufacturing a heat exchange module for a shell and tube heat exchanger according to the present invention.
Figure 4 is a front view showing a divided state of the partition plate used in the present invention.
5 and 6 are schematic diagrams sequentially showing a heat exchange module temporary assembly step and a clamping step.
7 is an external perspective view of a heat exchange module manufactured according to the present invention.
Figure 8 is an external perspective view showing a setting mechanism dedicated to the heat exchange module used in the present invention.
Fig. 9 is a front view of the main part of Fig. 8;
Figure 10 is a plan view of Figure 9;

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

The method of manufacturing a heat exchange module for a shell-and-tube type heat exchanger according to the present invention is to divide the existing rectangular plate 11 into a plurality of pieces along the height direction according to the arrangement state of the heat transfer tube 9, as shown in the process block diagram of FIG. The step of producing a partition plate; A heat exchange module provisional assembly step of pre-assembling the heat exchange module 10 by prefabricating the partition plate together with the heat transfer tube 9; A heat exchange module clamping step of clamping the temporary assembled heat exchange module 10 in an upward and downward direction; A heat exchange module thermal fusion step of charging the clamped heat exchange module 10 into the interior of the heating furnace to heat-fuse each of the divided plates together with the heat transfer tube 9; A clamper separation step of removing the heat-sealed heat exchange module 10 from the heating furnace and releasing the clamping state; is performed sequentially.

First, in the step of manufacturing the divided plate, the plate 11 in the form of a square plate for manufacturing the heat exchange module 10 of the shell-and-tube type heat exchanger 1 is placed on the top plate along the height direction of the heat exchange module 10 as shown in FIG. 4. (14), the joint plate 16 and the lower plate 15 are divided into at least three, including the number of the upper plate 14, the joint plate 16 and the lower plate 15 are divided across the divided surfaces, respectively. It consists of a process of forming a semicircular tube mounting groove (17) that meshes with the heat transfer tube (9) in the upper and lower directions.

2, the heat transfer tube 9 is arranged in four rows along the width direction of the heat exchange module 10, while the heat transfer tube 9 is arranged in the height direction of the heat exchange module 10. The tubes 9 are arranged to form four layers, and accordingly, in FIG. 4, one upper plate 14, one lower plate 15, and three joint plates 16 are formed, respectively, The partition plate 13 was manufactured so that a total of four semi-circular tube mounting grooves 17 were formed for each up and down.

In other words, the upper plate 14 and the lower plate 15 constituting the partition plate 13 will be provided one by one regardless of the arrangement of the heat transfer tube 9 in the height direction of the heat exchange module 10. , In the case of the joint plate 16, the arrangement state of the heat transfer tube 9 over the height direction of the heat exchange module 10, that is, one less than the number of stacked heat transfer tubes 9 (n-1) The tube mounting groove 17 provided over the divided surfaces of the upper plate 14 and the joint plate 16 and the lower plate 15 is It is formed equal to the number of heat transfer tubes 9 arranged along the width direction.

As described above, the tube mounting groove 17 provided over the divided surfaces of the upper plate 14, the joint plate 16 and the lower plate 15 is 1/of the outer diameter of the heat transfer tube 9 at the corresponding position. By forming a groove in the shape of a semicircle corresponding to 2, each of the partition plates 13 is stacked together with the heat transfer tube 9 through the heat exchange module temporary assembly step and the heat exchange module clamping step to be described later. In this case, it is preferable that the inner circumferential surface of each tube mounting groove 17 is firmly contacted with the outer circumferential surface of the heat transfer tube 9 at the corresponding location, and three or more split plates 13 are formed along the length direction of the heat transfer tube 9 When applied, the flow path adjustment groove 12 in the upper plate 14 or the lower plate 15 of the central partition plate 13 except for the partition plate 13 located at the front and rear ends of the heat transfer tube 9 ) Is formed.

The flow path adjustment groove 12 is formed to form a flow path of the heat transfer fluid or the heat to be transferred fluid flowing into the heat exchange tank 2 into a zigzag-type path in the up and down directions, as described above. In the step (dividing plate manufacturing step), the flow path adjustment groove 12 may be formed in the corresponding position in advance, or after the final production of the heat exchange module 10 is completed through the process from this step to the clamper separation step. It goes without saying that the flow path adjustment groove 12 may be formed in the commercialization step.

In addition, in the case of the flow path adjustment groove 12, the rest of the upper surface of the upper plate 14 constituting the partition plate 13 or the lower surface of the lower plate 15 except for the left and right ends as shown in FIG. It is common to form in a manner that cuts (cuts out) a predetermined depth, and if necessary, instead of the flow path adjustment groove 12 on the upper side of the upper plate 14 and the lower side of the lower plate 15 It is also possible to form a flow hole for the heat transfer fluid or the heat to be transferred, and the flow hole may also be formed as a hole whose length is lengthened over the portion where the flow path adjustment groove 12 is formed, and the length It is also possible to form a plurality of small holes in succession over the area.

After passing through the above-described manufacturing step of the partition plate, the lower plate 15 along the height direction of the heat exchange module 10 according to the position where each partition plate 13 is arranged, as shown in FIGS. 5 and 6. ), the joint plate 16 and the upper plate 14 are sequentially butted and stacked, but between the upper plate 14 and the tube mounting groove 17 provided on the divided surface of the joint plate 16 and the lower plate 15 A heat exchange module temporary assembly step in which each heat transfer tube 9 is engaged and mounted, and a heat exchange module clamping step of clamping the temporary assembled heat exchange module 10 in the up and down directions are sequentially performed.

The clamper used in the heat exchange module clamping step includes a cover plate 18 and a bottom plate 19 covering the upper and lower surfaces of the temporary assembled heat exchange module 10, and the cover plate 18 and the bottom plate ( 19) is a clamping bolt 20 and a clamping nut 20a connecting the bar, and the length of the cover plate 18 and the bottom plate 19 is less than the length of the heat transfer tube 9 forming the heat exchange module 10. It is lengthened so that the front and rear ends of the cover plate 18 and the bottom plate 19 can protrude to the front and rear sides of the temporary assembled heat exchange module 10, and the protruding cover plate 18 and the bottom After passing through the rod-shaped clamping bolts 20 in the vertical direction across the four corners of the plate 19, the clamping nuts 20a are fastened to the ends of each clamping bolt 20.

In addition, the widths of the cover plate 18 and the bottom plate 19 can be variously adjusted according to whether the flow path adjustment groove 12 is applied. When the flow path adjustment groove 12 is applied, the cover plate 18 ) And the bottom plate 19 are longer than the length of the flow path adjustment groove 12 and smaller than the length of the partition plate 13 so that the clamping work of the heat exchange module 10 is hindered by the flow path adjustment groove 12 If the flow path adjustment groove 12 is not formed or a flow hole is formed in place of the flow adjustment groove 12, the width of the cover plate 18 and the bottom plate 19 is divided into a partition plate. (13) It is desirable to allow stable clamping of the heat exchange module 10 by about 2/3 to 9/10 of the total length.

In addition, when the flow channel adjustment groove 12 is not formed or when a flow hole is formed in place of the flow channel adjustment groove 12, a pair of rod-shaped rods replaces the cover plate 18 and the bottom plate 19. The clampers are applied to the upper and lower surfaces of the heat exchange module 10, respectively, and each membrane is in a state in which the front and rear ends of the rod-shaped clamper protrude to the front and rear sides of the heat exchange module 10, respectively. A clamping method that connects the front and rear ends of the large clamper with a clamping bolt 20 and a clamping nut 20a may be applied, and the cover plate 18 and the bottom plate 19 or rod-shaped clamper are shown in FIG. Likewise, it is installed in close contact over the upper plate 14 and the lower plate 15 of each partition plate 13 constituting the heat exchange module 10.

After the heat exchange module temporary assembly step and the heat exchange module clamping step as described above, the cover plate 18, the bottom plate 19, and the clamping bolt 20 and clamping nut 20a are firmly clamped in the up and down directions. After charging the heat exchange module 10 into the inside of a heating furnace, which is not shown, by maintaining the heat exchanger module 10 for 10 to 30 minutes under a temperature condition of 450 to 850°C, the upper plate 14 and the partition plate 13 are The joint plate 16 and the lower plate 15 are subjected to a heat fusion step of the heat exchange module in which the heat transfer tube 9 is interposed therebetween.

The reason for limiting the temperature applied to heat fusion of the heat exchange module 10 to 450 to 850°C in this step is that the heat transfer tube 9 used in most shell and tube heat exchangers 1 is made of copper or copper alloy. , In the case of the diaphragm 11, a copper or copper alloy material such as the heat transfer tube 9 is widely used from an aluminum alloy. In the case of the split diaphragm 13 made of an aluminum alloy, a melting temperature of about 450 to 650°C In the case of the split plate 13 made of copper or copper alloy, a fusion temperature of about 650 to 850°C was applied, and any metal material may be applied as long as heat bonding is possible under the corresponding temperature condition. , It is preferable that the heat transfer tube 9 and the partition plate 13 are made of the same metal material as possible, or the split plate 13 is made of a metal material having a lower heat fusion temperature than the heat transfer tube 9.

Of course, depending on the type of the shell-and-tube heat exchanger 1, the heat transfer tube 9 or the diaphragm 11 may be made of stainless steel or titanium, but the shell-and-tube heat exchanger 1 made of such a material It is an expensive product that is limitedly used for special purposes such as cooling of high-temperature combustion gases or exhaust gases that are highly corrosive. When the present invention is applied to the manufacture of the heat exchange module 10 of the heat exchanger 1, the heat treatment temperature and Considering the time and the manufacturing aspect of the partition plate 13 and the clamper at the same time, the economical efficiency and efficiency are deteriorated.The present invention provides a heat transfer tube 9 and a plate 11 made of copper, copper alloy, or aluminum alloy. Eggplant can be interpreted as being proposed for the purpose of a general-purpose shell-and-tube heat exchanger (1).

In addition, since the thickness of the diaphragm 11 applied to the shell-and-tube type heat exchanger (1) is usually about 1 to 2 cm, the thickness of the diaphragm (13) made of aluminum alloy is about 1 cm and is heat-sealed for about 10 minutes. Apply the time, and when the thickness of the partition plate 13 made of aluminum alloy is about 2cm, or the thickness of the partition plate 13 made of copper or copper alloy is about 1cm, heat fusion time of about 20 minutes is applied. On the other hand, it is desirable to apply a heat-sealing time of about 30 minutes for the partition plate 13 made of copper or copper alloy and whose thickness is about 2cm. Even when aluminum alloy or other material other than copper or copper alloy is applied It is desirable to appropriately adjust the heat fusion time according to the thickness standard of.

As described above, the upper plate 14, the joint plate 16, and the lower plate 15 constituting each partition plate 13 are laminated together with the heat transfer tube 9 and the divided surfaces are thermally fused. Of course, it is possible to firmly fix each heat transfer tube 9 together with the heat-sealed partition plate 13 just by making it possible, as well as the upper plate 14, the joint plate 16, and the lower plate 15. As the heat fusion operation is performed while the inner circumferential surface of the tube mounting groove 17 provided over the heat transfer tube 9 is in close contact with the outer circumferential surface of the heat transfer tube 9, between the inner circumferential surface of the tube mounting groove 17 and the outer circumferential surface of the heat transfer tube 9 Since the heat fusion phenomenon occurs over a part or the whole of the contact surface, the watertight performance or airtight performance for the penetrating portion of the heat transfer tube 9 can be sufficiently secured.

After passing through the heat fusion step of the heat exchange module as described above, the cover plate 18 and the bottom plate 19 and the heat exchange module 10 clamped by the clamping bolt 20 and the clamping nut 20a are removed from the heating furnace to room temperature. After slow cooling under conditions, when the cover plate 18, the bottom plate 19, and the clamping bolt 20 and the clamping nut 20a are separated from the heat exchange module 10, the clamper separation step is performed, as shown in FIG. The fabrication of the heat exchange module 10 in which the upper plate 14, the joint plate 16, and the lower plate 15 constituting each partition plate 13 are heat-fused together with the heat transfer tube 9 at the corresponding position. It is done.

As described above, the cover plate 18 and the bottom plate 19, and the clamping bolt 20 and the clamping nut 20a used for clamping the heat exchange module 10 must be finally separated from the heat exchange module 10, The cover plate 18, the bottom plate 19, the clamping bolt 20, and the clamping nut 20a are metal materials that do not undergo thermal fusion under a temperature condition of 450 to 850°C, for example, stainless steel material or A metal material made of a heat-resistant coating that prevents heat fusion under the applicable temperature conditions, for example, titanium coating, must be used, and the metal material itself with a heat-resistant coating must be a metal having a melting temperature higher than that of copper or copper alloy. Ham is a self-evident matter.

Before mounting the heat exchange module 10, which has been manufactured through the manufacturing process according to the present invention as described above, into the interior of the heat exchange tank 2, the surface of the partition plate 13 or the heat transfer tube 9, or the heat fusion joint ( The productization step of performing the finishing treatment of 13a) may be additionally carried out, or the remaining partition plates 13 except for the partition plates 13 installed at the front and rear ends of the heat transfer tube 9 as described above. It is also possible to form the flow path adjustment groove 12 provided in the channel or the flow hole of the heat transfer fluid or the heat source fluid in this production step, and the end of each heat transfer tube 9 is of a "⊂" or "⊃" type. By connecting with a U-band, the fluid flow path by the heat transfer tube 9 can also be formed as a zigzag path in the front and rear directions, and is applied to the heat exchange module manufacturing method according to the present invention. The heat transfer tube 9 itself may be a tube-bundle connected in a zigzag manner over the upper, lower and/or left and right directions by a plurality of U bands.

8 is a setting mechanism 21 for exclusive use of the heat exchange module 10 proposed for the heat exchange module provisional assembly step and the heat exchange module clamping step, wherein the setting mechanism 21 is each divided plate 13 ), a setting bar 22 for a stacked setting operation of the setting bar, a holder 24 for supporting the setting bar 22, and a pedestal 26 for supporting the holder 24, The setting bar 22 is a vertical frame of a "c"-shaped cross-section into which the ends of both sides (left and right in the drawing) of the partition plate 13 are inserted, and the holder 24 is the lower side of the setting bar 22 A total of two are arranged in the longitudinal direction of the heat exchange module 10, one at each of the left and right ends of the partition plate 13 as a connected square bar-shaped frame, and the pedestal 26 includes the left and right holders 24 The front and rear ends of) are arranged in the width direction of the heat exchange module 10 as a square rod-shaped frame placed on the upper surface.

Therefore, the setting bar 22 is installed in at least two or more for each cradle 24 in accordance with the number of partition plates 13 required for manufacturing the heat exchange module 10, but the cover plate 18 and the bottom Before charging the heat exchange module 10, which has been clamped from the clamping operation of the heat exchange module 10 using the plate 19 and the clamping bolt 20 and the clamping nut 20a, into the inside of the heating furnace, the setting mechanism 21 ) It is preferable to make the height (h) of the setting bar 22 within the range of 85 to 95% of the height of the partition plate 13, as shown in FIG. And, the insertion width (d ₁ ) of the partition plate 13 provided by the inner side of the setting bar 22 is preferably formed to be larger than the thickness of the partition plate 13 within the range of 0.5 ~ 1.5mm.

In other words, the cover plate 18 used in the heat exchange module clamping step can be placed on the upper surface of the heat exchange module 10 temporarily assembled so as to be in close contact with the upper plate 14 of each partition plate 13. , During the clamping operation of the heat exchange module 10 using the cover plate 18, the upper plate 14 constituting each partition plate 13 is stably positioned without shaking between the left and right setting bars 22. It means that the height (h) of the setting bar 22 is set within 85 to 95% of the height of the partition plate 13 so that it can be clamped together with the cover plate 18 in a state, and the bottom plate 19 is temporarily assembled. The working space required to push it to the bottom of the module 10 and make it in close contact with the lower plate 15 of each partition plate 13 is sufficiently secured by the gap between the left and right holders 24 and the thickness of the holder 24 Can be.

In addition, the top plate 14, the joint plate 16 and the bottom plate 15, which are stacked by being abutted in the height direction along each of the setting bars 22, are not excessively displaced on the dividing surface and are required for thermal fusion. The inner side of the setting bar 22 is provided so that the partition plate 13 of the heat exchange module 10 on which the clamping operation is completed can be easily separated from the setting bar 22 while securing a sufficient contact area. It means that the insertion width (d ₁ ) of the partition plate 13 is increased within the range of 0.5 to 1.5 mm than the thickness of the partition plate 13, and when the thickness of the partition plate 13 is within 1 cm, the insertion width (d ₁ ) is within the range of 1.05 to 1.1 cm, and when the thickness of the partition plate 13 is within 2 cm, the insertion width d ₁ is preferably within the range of 2.1 to 2.15 cm.

As an additional matter, as described above, the partition plate 13 is installed in at least 3 or more over the length direction of the heat transfer tube 9, while being installed at the front and rear ends of the heat transfer tube 9 When the flow path adjustment groove 12 is formed in advance on the remaining partition plate 13 except for the partition plate 13, the clamping operation of the heat exchange module 10 using the cover plate 18 and the bottom plate 19 is a flow path. A dimensional design is required so as not to be disturbed by the adjustment groove 12. For this purpose, the insertion depth of the partition plate 13 provided by the inner side of the setting bar 22 as shown in FIG. 10 (d ₂ ) It is preferable to be within the range of 1/3 to 2/3 of the length of the left and right ends of the partition plate 13 excluding the flow path adjustment groove 12.

The upper plate 14 or the lower plate 15 of the partition plate 13 in which the flow path adjustment groove 12 is formed among the partition plates 13 constituting the heat exchange module 10 through the dimensional design as described above is also a cover plate. It can be firmly clamped by the (18) and the bottom plate (19), and the width of the cover plate 18 and the bottom plate 19 is the top plate except for the part inserted into the setting bar 22 14) and the lower plate 15 are preferably dimensioned to cover the entire length, and the flow path adjustment groove 12 is formed separately later in the commercialization step, or the flow path adjustment groove 12 is replaced. In the case where the flow hole is formed, there is no obstacle to the clamping operation of the heat exchange module 10 by the cover plate 18 and the bottom plate 19, so the height of the setting bar 22 described above ( Only h) and the insertion width (d ₁ ) only need to be reflected in the dimensional design of the setting mechanism 21.

Finally, each of the setting bars 22 is assembled and installed detachably with the corresponding cradle 24, while its position adjustment and position fixing are possible along the length direction of the cradle 24, and the respective The pedestal 26 is a telescopic frame that can be adjusted in length, so that a single setting mechanism 21 can perform provisional assembly and clamping of the heat exchange module 10 having various dimensions, and at the same time, the clamping operation It is preferable to separate the completed heat exchange module 10 from the setting mechanism 21 more quickly and easily, and the position adjusting means of the setting bar 22 and the length adjusting means of the pedestal 26 are very It should be noted that it can be applied in various ways.

As a representative example, as shown in FIGS. 8 to 10, the cradle 24 is made of a frame having a "convex"-shaped cross-section in which the guide rail 25 is concave in the longitudinal direction along the center of the upper surface, and the setting Mounting plates 23 to fix the setting bar 22 at the required position using setting bolts 23a fastened through the guide rail 25 of the holder 24 at the lower ends of both sides of the bar 22 This connection is installed, and the pedestal 26 includes two mounting brackets 27 connected to the left and right mounting brackets 24, respectively, and a connecting rod 28 that is slidably inserted along the inside of the mounting brackets 27. On the other hand, a setting bolt (27a) that is fastened toward the connecting rod (28) so that the length of the pedestal (26) can be set according to the required length at the entrance side of the mount (27) into which the connecting rod (28) is inserted. ) Is installed.

According to the present invention having the configuration as described above, the conventional rectangular diaphragm 11 for supporting the heat transfer tube 9 is provided with the upper plate 14 and the joint plate 16 and the lower plate having the tube mounting groove 17 formed therein. In the state divided into (15), the heat exchange module (10) is temporarily assembled and clamped so that each of the partition plates (13) engages with tens to hundreds of heat transfer tubes (9), and then to the inside of the heating furnace. As the heat exchange module 10 is manufactured in a manner in which each partition plate 13 is thermally fused together with the heat transfer tube 9 by charging, it is excellent that no welding defect or tube damage occurs when compared to the existing welding method. High quality heat exchange module 10 can be produced, and even when compared with the existing expansion method, the watertight performance or airtight performance of the part where each heat transfer tube 9 passes through the diaphragm 11 is sufficiently secured, and at the same time, The overall production process of the heat exchange module 10 can be performed more easily and easily.

In particular, in the case of using the setting mechanism 21 dedicated to the heat exchange module 10 including the setting bar 22, the cradle 24, and the pedestal 26, the heat exchange module ( In the case where the working process up to the clamping step of 10) can be performed more quickly and accurately, and the position of the setting bar 22 and the length of the pedestal 26 can be adjusted, one setting mechanism With (21) alone, temporary assembly and clamping of the heat exchange module 10 having various dimensions can be performed, and through this, work requiring skilled skills such as existing welding work or expansion work is excluded to the maximum and the heat exchange module ( By making the overall production process of 10) easier and easier to perform, mass production and cost reduction of the shell and tube heat exchanger 1 including the heat exchange module 10 can be achieved.

1: heat exchanger 2: heat exchange tank 3: first inlet pipe
4: first discharge pipe 5: second inflow pipe 6: second discharge pipe
7: inlet chamber 8: discharge chamber 9: heat transfer tube
10: heat exchange module 11: diaphragm 12: flow path adjustment groove
13: split plate 13a: heat-sealed joint 14: top plate
15: lower plate 16: joint plate 17: tube mounting groove
18: cover plate 19: bottom plate 18a, 19a: fastening hole
20: clamping bolt 20a: clamping nut 21: setting mechanism
22: setting bar 23: mounting plate 23a, 27a: setting bolt
24: holder 25: guide rail 26: stand
27: mounting 28: connecting rod

Claims (4)

Tens to hundreds of heat transfer tubes 9 are arranged in parallel in the up, down and left and right directions at regular intervals, and each of the heat transfer tubes 9 is attached to at least two square diaphragms 11 In the manufacturing method of the heat exchange module 10 for the shell-and-tube heat exchanger 1 connected and installed in a hexahedral block shape,
Each of the diaphragms 11 is divided into at least three or more including the upper plate 14, the joint plate 16, and the lower plate 15 along the height direction of the heat exchange module 10, and the upper plate ( 14) and the division plate manufacturing step of forming a semicircular tube mounting groove 17 that meshes with each of the heat transfer tubes 9 over the divided surfaces of the joint plate 16 and the lower plate 15 in an upper and lower direction. ,
After passing through the step of manufacturing the divided plate, the joint plate 16 and the upper plate 14 are separated from the lower plate 15 along the height direction of the heat exchange module 10 according to the position where each divided plate 13 is placed. A heat exchange module is assembled in which the heat transfer tube 9 is interlocked and mounted between the tube mounting grooves 17 provided on the divided surfaces of the upper plate 14, the joint plate 16 and the lower plate 15, but sequentially butt-stacked. Step and,
After passing through the heat exchange module temporary assembly step, the cover plate 18 and the bottom plate 19 covering the upper and lower surfaces of the temporary assembled heat exchange module 10 are placed in the upper plate 14 and the lower end of each partition plate 13. Arranged across the plate 15, and then fastened to the end of the clamping bolt 20 and a rod-shaped clamping bolt 20 penetrating the edges of the cover plate 18 and the bottom plate 19 in a vertical direction. A heat exchange module clamping step of clamping the temporary assembled heat exchange module 10 in the up and down directions using the clamping nut 20a that is used,
After the heat exchange module clamping step, the cover plate 18, the bottom plate 19, and the heat exchange module 10 clamped by the clamping bolt 20 and the clamping nut 20a are charged into the inside of the heating furnace. , The upper plate 14, the joint plate 16, and the lower plate 15 constituting each of the divided plates 13 are connected to the heat transfer tube 9 by maintaining it for 10 to 30 minutes under a temperature condition of 450 to 850°C. A heat fusion step of a heat exchange module to heat fusion in a state interposed therebetween,
After passing through the heat-sealing step of the heat exchange module, the cover plate 18, the bottom plate 19, and the heat exchange module 10 clamped by the clamping bolt 20 and the clamping nut 20a are removed from the heating furnace and under normal temperature conditions. After slow cooling, the cover plate 18, the bottom plate 19, and the clamping bolt 20 and the clamping nut 20a are separated from the heat exchange module 10 through a clamper separation step,
The cover plate 18, the bottom plate 19, and the clamping bolt 20 and the clamping nut 20a are metal materials that do not undergo thermal fusion under a temperature condition of 450 to 850°C, or thermally fused under the corresponding temperature condition. A method of manufacturing a heat exchange module for a shell-and-tube heat exchanger, characterized in that it is made of a metal material with a heat-resistant coating to prevent it. The method of claim 1, wherein in the temporary assembly step of the heat exchange module, a setting device 21 dedicated to the heat exchange module 10 is used, and the setting device 21 is a setting bar for a stacked setting operation of each of the partition plates 13 ( 22), and a cradle 24 for supporting the setting bar 22, and a pedestal 26 for supporting the cradle 24,
The setting bar 22 is a vertical frame of a "c"-shaped cross-section into which both ends of the partition plate 13 are inserted, and the height h of the setting bar 22 is 85 to the height of the partition plate 13 While being within the 95% range, the insertion width (d ₁ ) of the partition plate 13 provided by the inner side of the setting bar 22 is formed larger than the thickness of the partition plate 13 within a range of 0.5 to 1.5 mm,
The cradle 24 is a square bar-shaped frame to which the lower end of the setting bar 22 is connected, and a total of two are arranged in the longitudinal direction of the heat exchange module 10, one each at the left and right ends of the partition plate 13 And, the setting bar 22 is installed in at least two or more for each cradle 24,
The pedestal 26 is a shell-and-tube type heat exchanger module manufacturing, characterized in that the front and rear ends of the left and right holders 24 are arranged in the width direction of the heat exchange module 10 in a rectangular bar-shaped frame placed on the upper surface. Way. According to claim 2, The partition plate (13) and the setting bar (22) is installed in at least three or more over the length direction of the heat transfer tube (9) and the holder (24), of the partition plate (13) A flow path adjustment groove 12 is formed on the upper or lower surface of the partition plate 13 except for the partition plate 13 located at the front and rear ends of the heat transfer tube 9,
The flow path adjustment groove 12 has a shape in which the remaining portions except for the left and right ends of the upper or lower surface of the corresponding partition plate 13 are cut to a predetermined depth, and the inner surface of the setting bar 22 is provided. The insertion depth (d ₂ ) of the partition plate 13 is within a range of 1/3 to 2/3 of the length of the left and right ends of the partition plate 13 excluding the flow path adjustment groove 12. Heat exchange module manufacturing method for tube heat exchanger. The method according to claim 2 or 3, wherein each of the setting bars (22) is installed to be adjustable in position along the length direction of the corresponding holder (24), and each of the pedestal (26) is telescopically adjustable in length A method for manufacturing a heat exchange module for a shell-and-tube heat exchanger, characterized in that it becomes a type frame.

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