JP2011140037A - Method of manufacturing heat transfer enhancement tube, mold for heat transfer enhancement tube, heat transfer enhancement tube, heat exchanger, nuclear fusion reactor, and neutral particle injection heating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a heat transfer enhancement tube capable of manufacturing it easily and efficiently, a mold for the heat transfer enhancement tube, the heat transfer enhancement tube, and a heat exchanger. <P>SOLUTION: The method of manufacturing the heat transfer enhancement tube 10a includes a hydrostatic pressure step of imparting a hydrostatic pressure in a condition where a facing surface 21 of the mold 20 of a prescribed shape faces an object surface 11 of tube material 10 for form-rolling the shape of the facing surface 21 on the object surface 11 by rolling. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a method for manufacturing a heat transfer promotion tube, a mold for heat transfer promotion tube, a heat transfer promotion tube, a heat exchanger, a nuclear fusion reactor, and a neutral particle injection heating apparatus.

  For heat removal from high heat load devices used as cooling pipes for heat exchangers used in refrigerators, air conditioners and general cooling devices, or for heat receiving devices and heat exchangers of fusion reactor heat receiving devices and peripheral devices As the cooling pipe, a heat transfer accelerating pipe having a surface with fins having a predetermined shape is used (see, for example, Patent Document 1 or 2).

  As a method of manufacturing such a heat transfer promotion tube, for example, a tube material that is a raw surface with a smooth surface is prepared in advance, and a rolling process is performed on the inner surface of the tube while pulling out a mold or a die for forming a groove shape. And a method of cutting a groove shape directly on the inner surface by machining, and a method of rolling while inserting a die bar or a die bar with irregularities corresponding to the groove shape inside the pipe. ing. Similarly, for forming the groove shape on the outer surface of the tube, a method of forming a groove shape by inserting a mandrel into the inside so that the tube itself is not crushed and pressing a die against the outer surface, or a cutting method is used.

JP 2001-296096 A Japanese Patent Laid-Open No. 5-141890

  However, the above technique has the following problems. That is, in the cutting process by machining, it is necessary to prepare a special machining machine for each single product, and there is a problem that the processing efficiency when forming the groove shape is poor. In addition, for example, when the lead angle is made small in order to improve the heat removal performance, there arises a problem that the fins are liable to collapse at the time of drawing. In addition, for example, when machining the inner surface of a pipe having a small inner diameter with respect to a long-sized pipe, there is a problem that processing is complicated and processing time is required. Furthermore, in the rolling process by inserting a die rod or a die rod, it is necessary to strictly control the original shape of the inner diameter of the raw tube, and the completeness of the fin shape greatly depends on the dimensions of the raw tube, so special Therefore, there is a problem that it is necessary to prepare a finished pipe, which causes an increase in cost.

  For this reason, the manufacturing method of the heat-transfer acceleration | stimulation pipe | tube which can be manufactured easily and efficiently, the type | mold for heat-transfer acceleration | stimulation pipe | tubes, a heat-transfer acceleration | stimulation pipe | tube, and a heat exchanger are desired.

  In the method for manufacturing a heat transfer promoting tube according to one aspect of the present invention, a hydrostatic pressure is applied to a target surface of a pipe material with a facing surface of a mold having a predetermined shape facing the surface, and the shape of the facing surface is changed to the shape of the facing surface. A hydrostatic pressure process for rolling onto the target surface is provided.

  A heat transfer promotion tube according to another embodiment of the present invention is manufactured by the method for manufacturing a heat transfer promotion tube.

  A heat transfer promoting pipe mold according to another embodiment of the present invention is a mold that is arranged on the inner side of a pipe material to be molded and has an uneven shape corresponding to the molded shape on the outer surface thereof, and is in the axial direction of the pipe material. A movable core part, and a plurality of separable members disposed around the core part, wherein the plurality of members pull out the core part in the axial direction, and then the tube material. It is configured to be movable inward in the radial direction of the tube so as to be separated from the inner peripheral surface of the tube.

  A heat exchanger according to another aspect of the present invention includes the heat transfer promotion tube and a heat exchange target disposed in the vicinity of the heat transfer promotion tube, and a medium in the heat transfer promotion tube, Heat exchange is performed between heat exchange targets.

  According to the method of manufacturing a heat transfer promotion tube, the heat transfer promotion tube mold, the heat transfer promotion tube, the heat exchanger, the fusion reactor, and the neutral particle injection heating device according to the present invention, the heat transfer promotion tube can be easily and efficiently used. Can be manufactured automatically.

The side view which cuts off the state of the setting process of the heat-transfer acceleration | stimulation pipe | tube which concerns on 1st Embodiment of this invention, and shows it partially. The AA sectional view showing the state after the setting process of the heat transfer promotion tube. Explanatory drawing which shows the installation process of the heat-transfer acceleration | stimulation pipe | tube. The side view which shows the state after the HIP process of the heat transfer acceleration | stimulation pipe | tube partially cut off. BB sectional drawing which shows the state after the HIP process of the heat-transfer acceleration | stimulation pipe | tube. The side view which partially cuts and shows the state after the removal process of the heat-transfer acceleration | stimulation pipe | tube. CC sectional drawing which shows the state after the removal process of the same heat-transfer acceleration | stimulation pipe | tube. Explanatory drawing which shows the heat exchanger which concerns on the same embodiment. The side view which partially cuts and shows the structure of the shaping | molding die concerning 2nd Embodiment of this invention. DD sectional drawing which shows the assembly | attachment state of the same shaping | molding die. DD sectional drawing which shows the decomposition | disassembly state of the same shaping | molding die. The side view which shows the state of the removal process of the heat-transfer acceleration | stimulation pipe | tube which concerns on 3rd Embodiment of this invention, and is notched partially. Sectional drawing which shows the assembly | attachment state of the shaping | molding die concerning other embodiment of this invention. Sectional drawing which shows the decomposition | disassembly state of the same shaping | molding die. Sectional drawing which shows the assembly | attachment state of the shaping | molding die concerning other embodiment of this invention. Sectional drawing which shows the decomposition | disassembly state of the same shaping | molding die. The perspective view which shows the shaping | molding die concerning other embodiment of this invention. The perspective view which shows the shaping | molding die concerning other embodiment of this invention. Explanatory drawing which shows the nuclear fusion reactor as a heat exchanger concerning other embodiment of this invention. Explanatory drawing which shows the divertor of the nuclear fusion reactor. Explanatory drawing which shows the neutral particle injection heating apparatus as a heat exchanger concerning other embodiment of this invention.

[First Embodiment]
Hereinafter, the manufacturing method of the heat transfer promotion pipe | tube 10a concerning 1st Embodiment of this invention, the shaping | molding die 20, the heat transfer promotion pipe | tube 10a, and the heat exchanger 40 are demonstrated with reference to FIG. 1 thru | or FIG. In each figure, for the sake of explanation, the configuration is schematically shown with enlargement, reduction, or omission as appropriate. In the figure, arrows X, Y and Z indicate three directions orthogonal to each other.

  Here, as an example, a method of manufacturing the heat transfer promotion tube 10a having the uneven shape 11a as the fin structure on the inner peripheral surface is shown.

  The manufacturing method of the heat transfer promoting tube 10a includes a setting step of setting a forming die 20 (mold) as a forming die for heat transfer enhancing tube in the tube material 10, and an installation step of installing the tube material 10 in the HIP device 30 after setting. The HIP process (hot isostatic pressure process) is performed in the HIP device 30 and the shape of the mold 20 is rolled into the tube material 10 (hot isostatic pressure process). And a removing step for removing.

  FIG. 1 is a side view showing a state in which the forming die 20 is inserted into the tube material 10 in the setting step, and a part of the tube material 10 is cut away. FIG. 2 is a cross-sectional view taken along the line AA.

  In the setting step, the molding die 20 is inserted into the pipe material 10 prepared in advance. The tube material 10 is made of a copper material or a copper alloy, and is a circular tube-shaped element tube having smooth inner and outer surfaces. For example, the tube material 10 has an outer diameter d1: φ13 mm (nominal), an inner diameter d2: φ8 mm (nominal), a wall thickness t1: 2.5 mm, and a length l1: 2 m.

  The forming die 20 has a concave and convex shape 24 having a screw-like crest 22 and a groove 23 continuously spirally on its outer peripheral surface 21 and is made of a material different from the tube material 10 such as stainless steel. The molding die 20 is configured in a cylindrical shape having a diameter d3: φ8 mm (nominal), for example, and a length of about 11: 2 m, which is the same as that of the tube material 10. Here, as an example, a general metric screw M8 screw is assumed, and as shown in FIG. 4, at an angle in the spiral direction h1 of the spiral crest 22 and the groove 23 with respect to the tube diameter axis r1 orthogonal to the tube axis c1. The defined lead angle β is set to a screw shape such that tan β = P / (πD2) (P: pitch, D2: effective diameter), β≈3.168 deg. Further, in order to facilitate removal after molding, the tops of the concavo-convex shapes 24 and 11a are not sharp shapes but smooth curved surfaces.

  As shown in FIGS. 1 and 2, before the HIP process, the inner diameter d2 of the tube material 10 is set to be slightly larger than the outer diameter d3 of the molding die 20, and in the setting step, the molding die 20 is an axis along the X direction in the drawing. It can be inserted into the tube 10 while moving in the direction.

  In the state of this setting step, the inner peripheral surface 11 of the pipe material 10 that is the target surface is opposed to the outer peripheral surface 21 of the molding die 20 that is the opposing surface, and a gap 25 is formed therebetween.

  Next, in a state where the gap 25 between the mold 20 and the tube material 10 is evacuated, both ends in the length direction (X direction) are sealed by a method such as electron beam welding, and a plurality of HIP devices 30 shown in FIG. Install this book.

  The HIP device 30 shown in FIG. 3 includes a bottomed cylindrical HIP container 31 having a predetermined diameter, a holding part 32 that holds the tube material 10, a lid member 33 that seals the HIP container 31, and an HIP that performs HIP processing. Means 34.

  A plurality of pipe members 10 are installed in an upright state in the HIP container 31 and held by the holding unit 32. After installation, the lid member 33 is closed to seal the inside of the HIP container 31. Further, the HIP means 34 performs an HIP process in which an inert gas such as Ar is filled in the HIP container 31 and is maintained at a predetermined temperature to apply a hydrostatic pressure.

  Here, the HIP processing conditions are such that the inner peripheral surface 11 that is the target surface of the tube material 10 is deformed following the outer peripheral surface 21 that is the opposing surface of the mold 20 but is not bonded to the outer peripheral surface 21. Set to. For example, when the material of the tube material 10 is copper and the material of the forming die 20 is stainless steel, it is set so as not to reach the bonding condition in the HIP process of copper and stainless steel. As an example, when the HIP treatment adhesion conditions of copper and stainless steel are pressure: 100 MPa, temperature: 850 to 900 degrees, and treatment time: 2 hours, the HIP treatment is performed under conditions that deviate from the HIP treatment adhesion conditions.

  FIG. 4 is a side view of the base tube and the mold 20 after the HIP process, with a part cut away, and FIG. 5 is a BB cross-sectional view thereof. As shown in FIGS. 4 and 5, the pipe 10 is deformed so as to follow the shape of the mold 20 without being bonded to the mold 20, and the gap 25 is filled by this HIP process. As described above, the shape of the outer peripheral surface 21 of the molding die 20 is rolled on the inner peripheral surface 11 of the tube material 10. That is, a spiral groove 13 is formed in the tube material 10 corresponding to the spiral crest 22 of the mold 20, and a spiral peak 12 is formed in the tube material 10 corresponding to the spiral groove 23 of the mold 20. Thus, a spiral concavo-convex shape 11 a constituting a spiral fin (fin structure) is formed on the inner peripheral surface 11.

  Further, by removing the forming die 20 from the tube material 10 after the HIP treatment, as shown in FIGS. 6 and 7, the heat transfer promoting tube 10a in which the uneven shape 11a having a desired shape is formed is completed.

  The heat transfer promotion tube 10a manufactured by the above manufacturing method is used for a heat exchanger 40 as shown in FIG. 8, for example. The heat exchanger 40 includes a container 41 as a heat exchange target and a heat transfer promotion tube 10 a installed in the container 41. And in this container 41, a system in which the first fluid (medium) 42 flowing outside the heat transfer promoting tube 10a and the second fluid (medium) 43 flowing inside the heat transfer promoting tube 10a exchange heat. It has become.

  According to the manufacturing method of the heat transfer promoting tube 10a, the heat transfer promoting tube forming die 20, the heat transfer promoting tube 10a, and the heat exchanger 40 according to the present embodiment, the shape of the forming die 20 is changed to the tube material 10 by HIP processing. Therefore, the heat transfer promoting tube 10a can be manufactured easily and efficiently.

  That is, since rolling is performed by HIP processing, it is easy to set the lead angle of the spiral fin small, and the heat removal performance can be improved. In addition, spiral fins can be formed on the inner surface of a small-diameter and long-sized tube material, and a heat transfer promoting tube 10a of any size can be easily manufactured. For this reason, it leads to expansion of a use range.

  Since the inner surface of the tube material 10 is deformed so as to follow the mold 20, the completeness of the spiral fin is not affected by the dimensions of the tube material 10, which is an element tube, the conditions of the available tube material 10 can be relaxed, and heat transfer It becomes possible to improve the reliability of the promotion tube 10a. In addition, the yield in the manufacturing process is improved, and stable quality products can be mass-produced at low cost.

  Since a plurality of pipes 10 can be installed in the HIP container 31 and simultaneously subjected to HIP processing, stable quality products can be mass-produced at low cost.

  Moreover, since the shape of the shaping | molding die 20 can be set freely beforehand and a desired shape can be rolled to the inner surface of the pipe material 10 according to the type | mold, a shape can be determined arbitrarily and the heat transfer according to a function and the objective The promotion tube 10a can be manufactured.

[Second Embodiment]
Next, the manufacturing method of the heat transfer acceleration | stimulation pipe | tube 10a which concerns on 2nd Embodiment of this invention is demonstrated with reference to FIG. 9 thru | or FIG. Since the present embodiment is the same as the first embodiment except for the configuration of the mold 20 and the removal step, description thereof will be omitted.

  FIG. 9 is a side view showing a part of the configuration of the mold 20, and FIG. 10 is a DD cross-sectional view thereof. FIG. 11 is a cross-sectional view showing a divided state of the mold 20.

  The forming die 20 is a heat transfer accelerating tube forming die that is disposed inside the tube material 10 to be formed and has an outer peripheral surface 21 with an uneven shape 24 corresponding to the forming shape. Here, the thread 22 and the thread groove 23 are continuously formed in a spiral shape.

  As shown in FIG. 10, the mold 20 includes a core portion 51 that is disposed in the center portion and is movable in the axial direction of the tube material 10, and a first member 52 to a fifth member 56 that surround the core portion 51. , And is configured.

  The core portion 51 has a cylindrical core portion 51a and a convex portion 51b protruding in the radial direction from the core portion 51a, and is configured uniformly in the axial direction. The core 51 and the first member 52 to the fifth member 56 can be assembled and divided.

  In the assembled state shown in FIGS. 9 and 10, the first member 52 is disposed outside the convex portion 51b, and the second member 53 to the fifth member 56 are assembled in contact with each other so as to surround the periphery of the core portion 51a. ing. The arc surfaces 52a to 56a of the first member 52 to the fifth member 56 shown in FIG. 11 combine to form the outer peripheral surface 21 of the mold 20 in the assembled state, and the groove shapes formed on the arc surfaces 52a to 56a are spiral. Are arranged in a continuous manner. The inner walls 52b to 56b other than the circular arc surfaces 52a to 56a all extend in the axial direction.

  The core portion 51 is formed uniformly in the axial direction and is configured to be able to be pulled out in the axial direction. The first member 52 to the fifth member 56 are movable inward in the radial direction of the tube material 10 so as to be separated from the inner peripheral surface of the tube material 10 after the core portion 51 is pulled out. Further, since the inner walls 52b to 56b extend in the axial direction, the first member 52 to the fifth member 56 can also be pulled out in the axial direction while the arc surfaces 52a to 56a are separated from the inner peripheral surface of the tube material 10. It is.

  In the method for manufacturing the heat transfer promoting tube 10a according to the present embodiment, the mold 20 having a divided structure is assembled in advance and integrated into the tube material 10 in the setting step. Thereafter, the installation process and the HIP processing process are performed in the same manner as in the first embodiment. After the HIP process, the mold 20 and the heat transfer promoting tube 10a are in close contact with each other with the concavo-convex shape 11a and the concavo-convex shape 24 fitted together. For this reason, in this state, the mold 20 cannot be moved in the axial direction.

  In the present embodiment, in the removing step, the plurality of members 51 to 56 are separated from each other and pulled out in the axial direction for removal. That is, in the removal step after the HIP process, the central core 51 is first moved in the axial direction and pulled out. Thereafter, the first member 52 is shifted inward toward the space in which the core portion 51 is disposed to be separated from the inner peripheral surface 11 of the tube material 10. Then, the uneven shape 11a formed by molding on the inner peripheral surface 11 of the tube material 10 and the uneven shape 24 provided on the outer peripheral surface 21 of the mold 20 are separated from each other, so that the movement in the axial direction is not hindered.

  Therefore, the first member 52 can be pulled out smoothly in the axial direction. Further, the remaining plurality of second members 53 to 56 are similarly shifted inward to be separated from the inner peripheral surface 11 of the tube material 10 and then pulled out in the axial direction, thereby easily removing the mold 20. be able to.

  According to the manufacturing method of the heat transfer promotion tube 10a and the mold for heat transfer promotion tube according to the present embodiment, the following effects can be obtained. That is, by using the mold 20 having a split structure, when the mold 20 after the HIP process is removed, the mold 20 itself is disassembled and then removed, so that the mold 20 can be removed from the heat transfer promoting tube 10a. It can be easily removed.

  For example, when the mold 20 is moved along the spiral groove while being rotated and removed from the heat transfer promoting tube 10a, the groove shape may be damaged during removal due to a molding error or the like. There is a problem that it takes time and it becomes difficult to pull out particularly in the case of a long length. Further, when the uneven shape is not continuous in the axial direction and the plurality of circumferential grooves are independent shapes, etc., the drawing is impossible. In this embodiment, since the mold 20 is divided and the tube material 10 can be separated, the axial movement is possible, and the drawing can be easily and quickly performed. Further, the groove shape of the heat transfer promoting tube 10a formed after the HIP rolling is not damaged. For this reason, the quality and reliability of the heat transfer promotion tube 10a after manufacture are also improved, and it becomes possible to mass-produce the heat transfer promotion tube 10a having a stable shape at a low cost. Furthermore, since the removed mold 20 can be reassembled, integrated, and used repeatedly, this leads to a reduction in manufacturing cost.

[Third Embodiment]
Next, the manufacturing method of the heat transfer acceleration | stimulation pipe | tube 10a which concerns on 3rd Embodiment of this invention is demonstrated with reference to FIG. Since this embodiment is the same as the first embodiment except for the removal step, description thereof is omitted. FIG. 12 is a side view showing a state after the HIP process of the heat transfer promoting tube 10a according to the present embodiment with a part cut away.

  In the method for manufacturing the heat transfer promotion tube 10a according to the present embodiment, as the removing step, only the mold 20 is chemically reduced or melted and removed by an etching process. Here, since the pipe material 10 is made of copper and the mold 20 is made of stainless steel, the etching process is performed using an etching agent 60 that corrodes only stainless steel.

  That is, in the state after the HIP treatment, as shown in FIG. 12, the molding die 20 and the pipe material 10 of different materials are in close contact with each other in the groove-shaped portion, so that the molding die 20 can be easily removed as it is. Although it is difficult, by introducing the etching agent 60, it is possible to easily remove only the stainless steel mold 20 by reducing the thickness or melting it chemically.

  According to the present embodiment, since the mold 20 can be removed without damaging the product heat transfer promotion tube 10a, the quality and reliability of the heat transfer promotion tube 10a after production is improved, and a stable shape is obtained. It becomes possible to mass-produce the heat transfer acceleration tube 10a at low cost.

  Further, for example, even when the HIP condition is set incorrectly and the pipe material 10 and the mold 20 are joined, since the materials are different from each other, By using an etching method or the like, the mold 20 can be removed without damaging the heat transfer promotion tube 10a that is a product.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage.

  For example, although the case where the convex part 51b and the 1st member 52a are formed only in the one side of the core part 51a of the core part 51 was illustrated in the said 2nd Embodiment, it is not restricted to this. For example, as shown in FIGS. 13 and 14, even if the convex portions 51b and the first member 52a are formed on both sides of the core portion 51a, the convex portions 51b are formed at four locations as shown in FIGS. And even if it is the structure in which the 1st member 52a is formed, there exists an effect similar to the said 2nd Embodiment. Also, the lead angle β is not limited to the above embodiment, and the size can be appropriately changed according to the screw size and applicable standards.

  In the said embodiment, although illustrated about the case where the uneven | corrugated shape 11a used as the inner peripheral surface 11 fin structure of the tube material 10 is rolled, it is not restricted to this, An uneven shape is rolled on the outer peripheral surface of the tube material 10. The present invention can also be applied to cases.

  Moreover, the shape of the fin formed in the heat transfer acceleration | stimulation pipe | tube 10a is not restricted to the said embodiment. That is, in the above-described embodiment, the case where the spiral shape is a screw shape in which the uneven shape is continuous is shown. However, for example, the uneven shape along the axial direction is formed using the molding die 120 shown in FIG. Even if applied to the configuration or applied to a configuration in which a plurality of concave and convex shapes along the circumferential direction are independently arranged in parallel in the axial direction using the molding die 130 shown in FIG. Play.

  Moreover, in the said 1st Embodiment, although the general cooling device was illustrated as the heat exchanger 40 used as the application object of the heat-transfer acceleration | stimulation pipe | tube 10a, it is not restricted to this, It applies to various apparatuses. I can do it. For example, the heat transfer promoting tube 10a of the present invention can be applied to the fusion device shown in FIGS.

FIG. 19 is a cross-sectional view showing a nuclear fusion reactor 100, and FIG. 20 is a perspective view showing a target portion of a diverter. In the nuclear fusion reactor 100 shown in FIG. 19, the vacuum vessel 101 has a torus shape, and the plasma 102 is confined in the vacuum vessel 101 to cause a fusion reaction. Various in-reactor devices are arranged in the vacuum vessel 101, and in particular, a diverter 103 is arranged to exhaust He and the like generated after the nuclear fusion reaction out of the vessel 101. High energy He or the like is guided to the diverter 103 by a magnetic field, hits the target 104, and is converted into thermal energy. The heat load of the target 104 as the heat exchange target is as high as 20 MW / m ^2, for example, and a forced cooling method is usually adopted. The target 104 is provided with a cooling pipe 105, and the heat transfer promoting pipe 10 a of the present invention can be applied as the cooling pipe 105. That is, heat exchange is performed between the target 104 and the medium flowing in the heat transfer promoting tube 10a.

As another embodiment, the heat transfer promoting tube 10a can be applied to a neutral particle incident heating apparatus 200 as shown in FIG. The neutral particle injection heating apparatus 200 is attached to the nuclear fusion apparatus as a plasma additional heat apparatus, and includes an ion source 201 that extracts ions, a beam dump 202 that collects ions that have escaped neutralization, and an ion source 201. An ion source exhaust system 203 installed and a beam dump exhaust system 204 installed in the beam dump 202 are provided. In this neutral particle incidence heating apparatus 200, the high energy hydrogen ions remaining without being neutralized in the neutralization cell are bent in the orbit by the magnetic field of the deflection electromagnet and dumped to the beam dump 202. The heat load is as high as, for example, 10-20 MW / m ² and is similarly cooled by the forced cooling method. The beam dump 202 as a heat exchange target includes one in which cooling pipes are arranged in an orderly manner, and the heat transfer promotion pipe 10a of the present invention can be applied as the cooling pipe. That is, heat exchange is performed between the beam dump 202 and the medium flowing in the heat transfer promoting tube 10a.

  High heat load devices such as these fusion reactor heat receiving devices receive a high heat load, but in this embodiment, the lead angle of the heat transfer promoting tube 10a can be reduced and high heat removal performance can be secured. It can also be used for equipment.

  In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

10a ... Heat transfer promotion tube, 10 ... Tube material, 11 ... Inner peripheral surface, 11a ... Uneven shape,
12 ... Mountain, 13 ... Groove, 20, 120, 130 ... Mold, 21 ... Outer peripheral surface, 22 ... Mountain,
23 ... Groove, 24 ... Uneven shape, 25 ... Gap, 30 ... HIP device, 31 ... HIP container,
32 ... Holding part, 33 ... Cover material, 34 ... HIP means, 40 ... Heat exchanger,
41 ... Container (heat exchange target), 51 ... Core part, 51a ... Core part, 51b ... Projection part,
52 ... 1st member, 53 ... 2nd member, 54 ... 3rd member, 55 ... 4th member, 56 ... 5th member, 52a-56a ... Circular arc surface, 52b-56b ... Wall, 60 ... Etching agent.

Claims (11)

  A hydrostatic pressure process is provided, in which a hydrostatic pressure is applied to a target surface of a pipe material in a state where a facing surface of a mold having a predetermined shape is opposed, and the shape of the facing surface is rolled onto the target surface. A method of manufacturing a heat transfer acceleration tube.   The method for producing a heat transfer enhancement tube according to claim 1, wherein the hydrostatic pressure step is a hot hydrostatic pressure step in which the hydrostatic pressure step is performed under a high temperature condition, and the target surface of the pipe material is deformed into a shape following the opposing surface of the mold. . The mold is a columnar member having an uneven shape corresponding to a predetermined fin structure on its outer peripheral surface,
The fin corresponding to the uneven shape is formed on the inner peripheral surface of the tube material by performing the hydrostatic pressure step in a state where the mold is inserted along the axial direction into the space inside the tube material. The manufacturing method of the heat-transfer acceleration | stimulation pipe | tube of Claim 1 or 2. The mold is configured by combining a plurality of members that can be divided from each other.
4. The method according to claim 1, further comprising a removing step of separating and removing the plurality of members by separating them after the hydrostatic pressure step is performed with the plurality of members assembled. 5. The manufacturing method of the heat-transfer acceleration | stimulation pipe | tube of description.   The method for producing a heat transfer promotion tube according to any one of claims 1 to 3, further comprising a removal step of removing the mold by thinning or melting it chemically after the hydrostatic pressure step.   The method for producing a heat transfer promoting tube according to any one of claims 1 to 5, wherein the uneven shape is continuously formed in a spiral along the outer peripheral surface of the mold.   A heat transfer acceleration tube manufactured by the method of manufacturing a heat transfer acceleration tube according to any one of claims 1 to 6. A mold that is arranged inside the tube material to be molded and has an uneven shape corresponding to the molded shape on the outer surface thereof,
A core part movable in the axial direction of the pipe member;
A plurality of separable members disposed around the core portion,
The plurality of members are configured to be movable radially inward of the tubular material so as to be separated from the inner peripheral surface of the tubular material after the core portion is pulled out in the axial direction. Mold for heat promotion tube. A heat transfer promoting tube according to claim 7;
A heat exchange object disposed in the vicinity of the heat transfer promoting tube,
A heat exchanger for performing heat exchange between the medium in the heat transfer promotion tube and the heat exchange target. A vacuum vessel;
A diverter disposed in the vacuum vessel;
A plasma target portion provided on the diverter,
A fusion reactor characterized in that the heat transfer promoting tube according to claim 7 is disposed in the vicinity of the target portion. An ion source for extracting ions;
A beam dump that collects ions that have escaped neutralization, and
An ion source exhaust system installed in the ion source;
A beam dump exhaust system installed in the beam dump,
A neutral particle incidence heating apparatus, wherein the beam dump is provided with the heat transfer promotion tube according to claim 7.

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