Transporting apparatus and method of tube bundle

Abstract

The present invention relates to a tube bundle conveying device and method, and more specifically, to a device and method capable of conveying a tube bundle composed of a plurality of helical tubes. In the tube bundle conveying device of the present invention, a conveying part moves a tube hanger part so that a tube bundle is placed on the tube hanger part, and after the tube bundle is fixed to the tube hanger part, the tube hanger part can be introduced into the interior of a steam generator.

Description

Technology Field

[0001] The present invention relates to a tube bundle transport device and method, and more specifically, to a device and method capable of transporting a tube bundle composed of a plurality of helical tubes. Background Technology

[0002] Small Modular Reactor (SMR, Small Modular Reactor or Small Medium Reactor) refers to a small reactor with an electrical output of 300 MWe or less, as opposed to conventional large-capacity power reactors.

[0003] The steam generator is one of the key components of a small modular reactor, and it is a device that converts the thermal energy generated when the nuclear fuel inside the reactor undergoes nuclear fission into steam.

[0004] That is, high-temperature, high-pressure primary coolant containing radioactivity generated in the reactor can be flowed through the inside of helical tubes installed in the steam generator to heat the cold feed water outside the helical tubes and generate steam, and the generated steam can be supplied to the turbine.

[0005] As shown in FIG. 1, bar-shaped tube supports (110) for supporting the helical tube (210) may be spaced apart from each other along the circumference of the helical tube (210) inside the steam generator (100).

[0006] A plurality of helical tubes (210) can be stacked sequentially to form a bundle of tubes (200). The manufactured tube bundle (200) can be introduced into the interior of a steam generator (100), and each helical tube can be sequentially inserted into a slot formed in a tube supporter (110) to be assembled.

[0007] However, during the process of a worker manually transporting the tube bundle (200) and feeding it into the steam generator (100), physical exertion may be increased, which may reduce work efficiency. Additionally, during the process of transporting the tube bundle (200), there is a possibility that the surface of the helical tube (210) may be damaged as the tube bundle (200) collides with surrounding objects, including the tube supporter (110). The problem to be solved

[0008] The object of the present invention is to provide an apparatus and method capable of transporting a tube bundle composed of a plurality of helical tubes.

[0009] In addition, the invention provides a device and method that can reduce the possibility of damage to the surface of a helical tube during the transport of a tube bundle. means of solving the problem

[0010] A tube bundle transport device according to one embodiment of the present invention is a device for transporting a tube bundle composed of a plurality of helical tubes to a steam generator, and may include a tube hanger, a tube fixing part, a lifting part, and a conveying part. The tube hanger may pass through the tube bundle to support the tube bundle. The tube fixing part is installed on the tube hanger and may be coupled to or separated from the tube bundle. The lifting part is installed at the bottom of the tube hanger and may raise or lower the tube hanger. The conveying part is installed on the lifting part and may move the tube hanger.

[0011] According to one embodiment of the present invention, the tube bundle and the steam generator are horizontally arranged, and the lifting unit can adjust the height of the tube hanger based on the height of the tube bundle or the steam generator.

[0012] A tube hanger according to one embodiment of the present invention may comprise a base frame, a column frame, a horizontal frame, and a fixed frame. The lower end of the base frame is installed at the upper end of the lifting unit and may be drawn into the inner side of the tube bundle along the longitudinal direction of the tube bundle. The column frame may be installed at the upper end of the base frame. The horizontal frame may be installed at the upper end of the column frame along the longitudinal direction of the base frame so that the tube bundle may be supported. The fixed frame may be positioned between the column frames or positioned at the upper end of the base frame so that a tube fixing part may be installed.

[0013] A column frame according to one embodiment of the present invention can be formed in an arch shape.

[0014] A tube hanger according to one embodiment of the present invention may further comprise a connecting frame. The connecting frame may be installed between a column frame and a fixed frame, or between a base frame and a fixed frame.

[0015] A tube fixing member according to one embodiment of the present invention may comprise a body member and a fixing clip. One end of the body member may be installed on a fixing frame or a base frame. The fixing clip may be installed on the other end of the body member and may be coupled to or separated from a tube bundle.

[0016] A body part according to one embodiment of the present invention may be a cylinder or a wire winch.

[0017] A fixing clip according to one embodiment of the present invention may comprise a first fixing plate and a second fixing plate. The first fixing plate may be installed at the other end of the body portion. The second fixing plate may be positioned opposite to the first fixing plate. A helical tube may be arranged in a line between the first fixing plate and the second fixing plate.

[0018] A fixing clip according to one embodiment of the present invention may further comprise a spacer and a reinforcement member. The spacer may be positioned between a first fixing plate and a second fixing plate. The reinforcement member may come into contact with the side of the first fixing plate or the side of the second fixing plate.

[0019] A lifting unit according to one embodiment of the present invention may comprise a body frame, a lifting frame, and a lifting cylinder. The body frame may be installed on the upper part of the transfer unit. The upper end of the lifting frame may be installed on the lower end of the base frame. The lifting cylinder may be installed between the body frame and the lifting frame to raise or lower the lifting frame.

[0020] A transfer unit according to one embodiment of the present invention may include a support frame and a driving unit. A lower part of a lifting unit may be installed on the upper part of the support frame. The driving unit may be installed on the support frame to move the support frame.

[0021] A conveying unit according to one embodiment of the present invention may further comprise a weight and a level adjustment unit. The weight may be installed on the upper part of the support frame. The level adjustment unit may be installed on the side end of the support frame and may come into contact with the ground.

[0022] A level adjustment unit according to one embodiment of the present invention may comprise a hinge frame, a pivot frame, a rotation axis, and a support member. The hinge frame may be installed on a support frame. One end of the pivot frame may be hinge-coupled to the hinge frame. The rotation axis may be screw-coupled by penetrating the other end of the pivot frame. The support member may be installed at the lower end of the rotation axis and may come into contact with a floor surface.

[0023] A tube bundle transport method according to one embodiment of the present invention may include a tube bundle penetration step, a tube bundle fixing step, a tube bundle insertion step, and a tube bundle fixation release step. In the tube bundle penetration step, a tube hanger may penetrate the tube bundle so that the tube bundle is mounted on the tube hanger. In the tube bundle fixing step, the tube bundle may be coupled to the tube fixing part. In the tube bundle insertion step, the tube hanger may be inserted into the interior of a steam generator. In the tube bundle fixation release step, the tube bundle may be separated from the tube fixing part.

[0024] A tube bundle penetration step according to one embodiment of the present invention can adjust the height of the tube hanger based on the height of the tube bundle in which the lifting part is horizontally positioned.

[0025] A tube bundle fixing step according to one embodiment of the present invention may fix a transfer part to the bottom before attaching a tube bundle to a tube fixing part.

[0026] The tube bundle inlet step according to one embodiment of the present invention can adjust the height of the tube hanger based on the height of the steam generator in which the lifting part is horizontally positioned.

[0027] A tube bundle fixing release step according to one embodiment of the present invention may fix the transfer part to the bottom before separating the tube bundle from the tube fixing part. Effects of the invention

[0028] A tube bundle conveying device and method according to one embodiment of the present invention allows an operator to drive a conveying unit to mount and fix a tube bundle on a tube hanger, and then stably feed the tube hanger into the interior of a steam generator.

[0029] Therefore, the tube bundle can avoid unnecessary contact, which can reduce the possibility of damage to the tube surface, and the tube bundle transport process can be carried out in place of human labor, thereby improving work efficiency. Brief explanation of the drawing

[0030] Figure 1 is a perspective view showing a cross-section of a steam generator. FIG. 2 is a perspective view of a tube bundle transport device according to one embodiment of the present invention. Figure 3 is a front view of the tube bundle carrier device shown in Figure 2. Figure 4 is a side view of the tube bundle carrier device illustrated in Figure 2. FIG. 5 is a perspective view showing a first embodiment of the tube fixing part. Figure 6 is a plan view of the tube fixing part illustrated in Figure 5. Figure 7 is a section A-A of Figure 6. FIG. 8 is a perspective view showing a second embodiment of the tube fixing part. Figure 9 is an enlarged view of the fixing clip shown in Figure 8. FIG. 10 is a perspective view of the lifting unit shown in FIG. 2. Figure 11 (a) is a front view of the lifting unit shown in Figure 10. Fig. 11(b) is a side view of the lifting section shown in Fig. 10. FIG. 12 is a perspective view of the weight shown in FIG. 2. Fig. 13 is a side view of the weight shown in Fig. 12. FIG. 14 is a perspective view of the level adjustment unit illustrated in FIG. 2. Figure 15 is a section A-A of Figure 14. FIG. 16 is a flowchart illustrating a tube bundle transport method according to one embodiment of the present invention. Figure 17 is a drawing showing the state in which the tube hanger moves. Figure 18 is a drawing showing the state in which the tube hanger penetrates the tube bundle. Figure 19 is a drawing showing the state in which a tube bundle is combined with a tube fixing part. Figure 20 is a drawing showing the state in which the tube hanger is introduced into the steam generator. Specific details for implementing the invention

[0031] The present invention is capable of various modifications and may have various embodiments, and specific embodiments are to be illustrated and described in detail. However, this is not intended to limit the present invention to specific embodiments, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention.

[0032] The terms used in this invention are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this invention, terms such as "comprising" or "having" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0033] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that in the accompanying drawings, identical components are indicated by the same reference numerals whenever possible. Furthermore, detailed descriptions of known functions and configurations that may obscure the essence of the present invention will be omitted. For the same reason, some components in the accompanying drawings may be exaggerated, omitted, or schematically depicted.

[0035] FIG. 1 is a perspective view showing a cross-section of a steam generator, FIG. 2 is a perspective view of a tube bundle carrier according to an embodiment of the present invention, FIG. 3 is a front view of the tube bundle carrier shown in FIG. 2, and FIG. 4 is a side view of the tube bundle carrier shown in FIG. 2.

[0036] As illustrated in FIGS. 1 to 4, the tube bundle transport device (1000) is a device capable of fixing a tube bundle (200) formed by stacking a plurality of helical tubes (210) to form a bundle, and transporting the fixed tube bundle (200) to be introduced into the interior of a steam generator (100).

[0037] The tube bundle conveying device (1000) can be manufactured using known materials having a certain rigidity, such as steel, alloy steel, or synthetic resin. The fixing of the components of the tube bundle conveying device (1000) can be achieved through known fixing members such as bolts, screws, pieces, and clamps, or through welding methods, and a redundant description thereof is omitted.

[0038] The tube bundle transport device (1000) may include a tube hanging part (1100), a tube fixing part (1200), a lifting part (1300), and a transport part (1400). The tube hanging part (1100) may allow the tube bundle (200) to be mounted by penetrating the tube bundle (200) along the longitudinal direction of the tube bundle (200).

[0039] The tube fixing part (1200) is installed on the tube hanging part (1100) and can be combined with or separated from the tube bundle (200). The tube fixing part (1200) is made up of multiple parts and can be spaced apart from each other along the longitudinal direction of the tube bundle (200). Thus, the tube bundle (200) can be evenly fixed to the tube hanging part (1100).

[0040] The lifting unit (1300) is installed at the lower part of the tube hanger (1100) and can raise or lower the tube hanger (1100). The transfer unit (1400) is installed on the lifting unit (1300) and can move the tube hanger (1100).

[0041] That is, the operator can drive the transfer unit (1400) to mount and fix the tube bundle (200) on the tube hanger unit (1100), and then stably move the tube hanger unit (1100) into the inside of the steam generator (100).

[0042] Therefore, the tube bundle (200) can avoid unnecessary contact, which reduces the possibility of damage to the surface of the helical tube (210), and the process of transporting the tube bundle (200) can be carried out in place of the worker's labor, thereby improving work efficiency.

[0044] FIG. 5 is a perspective view showing a first embodiment of a tube fixing part, FIG. 6 is a plan view of the tube fixing part shown in FIG. 5, FIG. 7 is a section A-A shown in FIG. 6, FIG. 8 is a perspective view showing a second embodiment of a tube fixing part, and FIG. 9 is an enlarged view of the fixing clip shown in FIG. 8.

[0045] As illustrated in FIGS. 1, 2, 5 to 9, the tube hanger (1100) may include a base frame (1110), a column frame (1120), a horizontal frame (1130), a fixed frame (1140), and a connecting frame (1150).

[0046] The lower end of the base frame (1110) is fixed to the upper end of the lifting unit (1300) and can be inserted into the inner side of the tube bundle (200) along the longitudinal direction of the tube bundle (200) or into the inner side of the steam generator (100) along the longitudinal direction of the steam generator (100).

[0047] The base frame (1110) is in the form of a plate or block, and a worker can step onto the base frame (1110) and move along the base frame (1110) to combine or separate the tube bundle (200) and the tube fixing part (1200).

[0048] The column frame (1120) can be fixed to the top of the base frame (1110). The column frame (1120) is formed in an arch shape so that a worker can pass through it and corresponds to the circular circumference of the tube bundle (200), allowing the tube bundle (200) to be mounted more stably on the tube hanger (1100). The column frame (1120) is made up of multiple pieces and can be spaced apart from each other along the length direction of the base frame (1110).

[0049] A horizontal frame (1130) is installed on the top of a column frame (1120) along the longitudinal direction of a base frame (1110) so that a tube bundle (200) can be mounted thereon. A fixed frame (1140) is a medium for fixing a tube fixing part (1200) to a column frame (1120) or a base frame (1110). The fixed frame (1140) may be positioned between the column frames (1120) or on the top of the base frame (1110) so that the tube fixing part (1200) can be installed thereon.

[0050] The connecting frame (1150) is a medium for connecting frames. The connecting frame (1150) may be installed between the column frame (1120) and the fixed frame (1140), or between the base frame (1110) and the fixed frame (1140).

[0051] A first embodiment of the connecting frame (1150) is in the form of a block (1151), and after being joined in a state where the tube fixing part (1200) is installed and wraps around the perimeter of the fixing frame (1140) or the column frame (1120), a bolt (B) can be screwed through the block (shown in FIG. 5 and FIG. 6).

[0052] A second embodiment of the connecting frame (1150) is in the form of a plate (1152), which is inserted through both ends of the fixed frame (1140) and placed on the base frame (1110), after which a bolt can be inserted through the block and screw-coupled to the base frame (1110) (shown in FIG. 8).

[0053] A third embodiment of the connecting frame (1150) is in the form of a ring (1153), and can be positioned through the fixing frame (1140) while the tube fixing part (1200) is hinge-connected (shown in FIG. 8).

[0054] The tube fixing part (1200) may include a body part (1210, 1210') and a fixing clip (1220). A cylinder may be used for the first embodiment of the body part (1210) (shown in FIG. 6). A wire winch (1213) may be used for the second embodiment of the body part (1210') (shown in FIG. 8).

[0055] One end of the body part (1210, 1210') can be installed on the connecting frame (1150). A fixing clip (1220) can be installed on the other end of the body part (1210) to be combined with or separated from the tube bundle (200).

[0056] As described above, the manufactured tube bundle (200) can be introduced into the interior of the steam generator (100), and each helical tube (210) can be sequentially inserted into a slot formed in the tube supporter (110) to be assembled.

[0057] In order for the helical tube (210) to be inserted into the slot, the tube bundle (200) must be compressed outside the steam generator (100) and then introduced into the steam generator (100) with a reduced diameter so as to avoid unnecessary contact between the tube bundle (200) and the tube supporter (110).

[0058] A hydraulic or pneumatic cylinder is used for the cylinder (1211), and the diameter of the tube bundle (200) can be adjusted by extending or compressing the cylinder (1211). A locking lever (1212) is installed on the cylinder (1211) to prevent changes in length caused by the extension or compression of the cylinder (1211). Alternatively, the diameter of the tube bundle (200) can be adjusted by winding or unwinding the wire (1214) using a wire winch (1213).

[0059] The fixing clip (1220) may include a first fixing plate (1221) and a second fixing plate (1222). The first fixing plate (1221) may be hinge-connected to the other end of the body part (1210). The second fixing plate (1222) may be positioned opposite the first fixing plate (1221).

[0060] The helical tube (210) is arranged in a line between the first fixing plate (1221) and the second fixing plate (1222), and a bolt (B) can be screwed through the first fixing plate (1221) and the second fixing plate (1222).

[0061] During the repeated joining and separating of the bolt (B), the first fixing plate (1221) and the second fixing plate (1222) may wear out or bend due to excessive tightening.

[0062] To prevent this, the fixing clip (1220) may further include a spacer (1223) and a reinforcement member (1224). The spacer (1223) may be placed between the first fixing plate (1221) and the second fixing plate (1222). The reinforcement member (1224) may come into contact with the sides of the first fixing plate (1221) and the second fixing plate (1222).

[0063] The spacer (1223) is in the form of a block, and the reinforcement member (1224) is in the form of a plate. The reinforcement member (1224) can come into contact with the head of the bolt (B) in place of the first fixing plate (1221) and the second fixing plate (1222). The spacer (1223) can be interposed between the first fixing plate (1221) and the second fixing plate (1222).

[0064] That is, the spacer (1223) and the reinforcement member (1224) can reinforce and support the rigidity of the first fixing plate (1221) and the second fixing plate (1222), thereby reducing the possibility of damage to the first fixing plate (1221) and the second fixing plate (1222).

[0066] FIG. 10 is a perspective view of the lifting unit shown in FIG. 2, FIG. 11 (a) is a front view of the lifting unit shown in FIG. 10, and FIG. 11 (b) is a side view of the lifting unit shown in FIG. 10.

[0067] As illustrated in FIGS. 1, FIGS. 2, FIGS. 10 to FIGS. 11 (b), the tube bundle (200) and the steam generator (100) are arranged horizontally, and the lifting unit (1300) can adjust the height of the tube hanger (1100) based on the height of the tube bundle (200) or the steam generator (100) so that the tube hanger (1100) can be inserted into the tube bundle (200) and the steam generator (100).

[0068] The lifting unit (1300) may include a body frame, a lifting frame (1310), a lifting cylinder (1350), and a guide rod (1360). The body frame may be fixed to the upper part of the transfer unit (1400). The upper end of the lifting frame (1310) may be fixed to the lower end of the base frame (1110).

[0069] A lifting cylinder (1350) is used as a hydraulic or pneumatic cylinder and is installed between the body frame and the lifting frame (1310) to raise or lower the lifting frame (1310).

[0070] The body frame may include a lower frame (1320), a vertical frame (1330), and an upper frame (1340).

[0071] The lower frame (1320) is fixed to the upper part of the transfer unit (1400), and the lower end of the vertical frame (1330) can be fixed to the lower frame (1320). The upper frame (1340) is fixed to the upper end of the vertical frame (1330) and can be passed through the lifting cylinder (1350).

[0072] The guide rod (1360) is configured to guide the lifting of the lifting frame (1310) and to reduce the oscillation of the lifting frame (1310) during lifting. The upper end of the guide rod (1360) can be fixed to the lower end of the lifting frame (1310).

[0073] The lower end of the guide rod (1360) can be inserted into or withdrawn from the body frame in synchronization with the lifting of the lifting frame (1310). The guide rod (1360) may be composed of multiple guide rods and each may be positioned at the corners of the body frame.

[0075] FIG. 12 is a perspective view of the weight shown in FIG. 2, FIG. 13 is a side view of the weight shown in FIG. 12, FIG. 14 is a perspective view of the level adjustment part shown in FIG. 2, and FIG. 15 is a section A-A shown in FIG. 14.

[0076] As illustrated in FIGS. 1, 2, and FIGS. 12 to 15, the transfer unit (1400) may include a support frame (1410), a driving unit (1420), a transfer wheel (1430), a weight (1440), and a level adjustment unit (1450). The lower part of the lifting unit (1300) may be fixed to the upper part of the support frame (1410).

[0077] The drive unit (1420) is a moving platform and may be equipped with wheels and an electric motor or engine. The drive unit (1420) is fixed to the side of the support frame (1410) and can move the support frame (1410), i.e., the tube hanger (1100), to a designated position.

[0078] The conveyor wheel (1430) is configured to assist in the movement of the drive unit (1420). The conveyor wheel (1430) can be rotatably fixed to the bottom of the support frame (1410).

[0079] The tube hanger (1100) is formed with a long length so that it is inserted into the tube bundle (200) and the steam generator (100), and the lifting member (1300) is positioned so that the tube bundle (200) is mounted on the tube hanger (1100), so that the lifting member (1300) is positioned towards the end of the tube hanger (1100).

[0080] As a result, the tube hanger (1100) may tilt to one side due to the weight of the tube hanger (1100) and the tube bundle (200), or in severe cases, the entire tube bundle transport device (1000) may be overturned.

[0081] To prevent this, a weight (1440) can be installed on the upper part of the support frame (1410) to balance the weight with the tube hanger (1100). Specifically, the weight (1440) is in the form of a block and can be made up of multiple units and stacked.

[0082] And, an anchor bolt (1441) can be fixed to the base frame (1110) by penetrating the weight (1440) along the stacking direction of the weight (1440), and a nut (1442) can be screwed into the anchor bolt (1441) to fix the weight (1440).

[0083] The level adjustment unit (1450) is installed on the side of the support frame (1410) and can be in contact with or separated from the ground. The level adjustment unit (1450) is configured to fix the position of the conveying unit (1400) or to adjust the horizontal level of the tube hanging unit (1100) during the process in which the tube bundle (200) is combined with or separated from the tube hanging unit (1100).

[0084] The level adjustment part (1450) may include a hinge frame (1451), a pivot frame (1452), a fixing pin (1453), a rotation axis (1454), a handle (1455), a support part (1456), and a bearing (1457). The hinge frame (1451) may be fixed to the side end of the support frame (1410). One end of the pivot frame (1452) may be hinge-coupled to the hinge frame (1451).

[0085] A fixing pin (1453) can pass through the hinge frame (1451) and engage with the pivot frame (1452) to prevent rotation of the pivot frame (1452). A pivot shaft (1454) can pass through the other end of the pivot frame (1452) and be screw-coupled. A handle (1455) can be fixed to the top of the pivot shaft (1454). Here, the handle (1455) can be replaced with an electric motor.

[0086] The support member (1456) is fixed to the bottom of the rotation shaft (1454) and can come into contact with the bottom surface. A bearing (1457) is interposed between the support member (1456) and the rotation shaft (1454) so ​​that the rotation shaft (1454) can rotate on the support member (1456).

[0088] FIG. 16 is a flowchart illustrating a method for transporting a tube bundle according to an embodiment of the present invention, FIG. 17 is a drawing showing a state in which a tube hanger moves, FIG. 18 is a drawing showing a state in which a tube hanger penetrates a tube bundle, FIG. 19 is a drawing showing a state in which a tube bundle is coupled to a tube fixing part, and FIG. 20 is a drawing showing a state in which a tube hanger is introduced into a steam generator.

[0089] As illustrated in FIGS. 1, 2 and FIGS. 16 to 20, the tube bundle transport method (S100) may include a tube bundle penetration step (S110), a tube bundle fixing step (S120), a tube bundle inflow step (S130), and a tube bundle fixing release step (S140).

[0090] In the tube bundle penetration step (S110), the tube hanger (1100) can penetrate the tube bundle (200). Specifically, in the tube bundle penetration step (S110), the lifting unit (1300) can adjust the height of the tube hanger (1100) based on the height of the tube bundle (200) horizontally positioned by the operator.

[0091] The tube bundle (200) can be manufactured in advance and placed on a separate tube support member (300). Then, the transfer unit (1400) can be used by a worker to bring the tube hanger (1100) into the inside of the tube bundle (200) along the longitudinal direction of the tube bundle (200).

[0092] In the tube bundle fixing step (S120), the tube bundle (200) can be coupled to the tube fixing part (1200). Specifically, a worker steps onto the tube hanger part (1100), and the tube bundle (200) is coupled to the tube fixing part (1200) by the worker, so that the tube bundle (200) is compressed and its diameter can be reduced.

[0093] Here, before the tube bundle (200) is coupled to the tube fixing part (1200), the level adjustment part (1450, shown in FIG. 2) is fixed to the floor by the operator so that the operator can stably climb onto the tube hanger part (1100) and move, and the tube bundle (200) can be coupled to the tube fixing part (1200).

[0094] In the tube bundle insertion step (S130), the tube hanger (1100) can be inserted into the interior of the steam generator (100). Specifically, the height of the tube hanger (1100) can be adjusted by an operator based on the height of the horizontally positioned steam generator (100) by the lifting unit (1300). Then, the transfer unit (1400) can insert the tube hanger (1100) into the interior of the steam generator (100) along the longitudinal direction of the steam generator (100) by an operator.

[0095] In the tube bundle release step (S140), the tube bundle (200) can be separated from the tube fixing part (1200). Specifically, the tube bundle (200) is separated from the tube fixing part (1200) by an operator, so that its diameter is restored to its original state and it can come into contact with the tube supporter (110).

[0096] Here, before the tube bundle (200) is separated from the tube fixing part (1200), for safety as described above, the level adjustment part (1450, shown in FIG. 2) can fix the transfer part (1400) to the floor by a worker.

[0098] Although an embodiment of the present invention has been described above, those skilled in the art may modify and change the present invention in various ways by adding, changing, deleting, or adding components, etc., without departing from the spirit of the present invention as described in the claims, and such modifications and changes are also to be included within the scope of the rights of the present invention. Explanation of the symbols

[0099] 100: Steam generator 110: Tube supporter 200: Tube Bundle 210: Helical Tube 300: Tube support member 1000: Tube bundle carrier 1100: Tube hanger 1110: Base frame 1120: Column frame 1130: Horizontal frame 1140: Fixed Frame 1150: Connecting frame 1151: Block shape 1152: Plate-like shape 1153: Ring-like shape B: Bolt 1200: Tube fixing part 1210, 1210': Body part 1211: Cylinder 1212: Locking lever 1213: Wire winch 1214: Wire 1220: Fixing clip 1221: First fixing plate 1222: Second fixing plate 1223: Spacer 1224: Patchwork member 1300: Lifting section 1310: Lifting frame 1320: Lower frame 1330: Vertical frame 1340: Upper frame 1350: Lifting cylinder 1360: Guide Road 1400: Transfer unit 1410: Support frame 1420: Drive unit 1430: Transfer wheel 1440: Weight 1441: Anchor bolt 1442: Nut 1450: Level adjustment part 1451: Hinge frame 1452: Rotation frame 1453: Fixing pin 1454: Rotating shaft 1455: Handle 1456: Support 1457: Bearing

Claims

Claim 1 A tube bundle conveying device comprising: a tube hanger that penetrates the tube bundle and supports the tube bundle; a tube fixing part installed on the tube hanger that is coupled to or separated from the tube bundle; a lifting part installed at the lower part of the tube hanger to raise or lower the tube hanger; and a conveying part installed on the lifting part to move the tube hanger. Claim 2 A tube bundle transport device according to claim 1, wherein the tube bundle and the steam generator are horizontally arranged, and the lifting part adjusts the height of the tube hanger part based on the height of the tube bundle or the steam generator. Claim 3 A tube bundle transport device according to claim 1, wherein the tube hanger comprises a base frame having a lower end installed at the top of the lifting part and inserted into the inside of the tube bundle along the longitudinal direction of the tube bundle, a column frame installed at the top of the base frame, a horizontal frame installed at the top of the column frame along the longitudinal direction of the base frame on which the tube bundle is mounted, and a fixed frame disposed between the column frames or disposed at the top of the base frame on which the tube fixing part is installed. Claim 4 In paragraph 3, the above column frame is a tube bundle conveying device formed in an arch shape. Claim 5 A tube bundle conveying device according to paragraph 3, wherein the tube hanger further comprises a connecting frame installed between the column frame and the fixed frame, or installed between the base frame and the fixed frame. Claim 6 In paragraph 3, the tube fixing part comprises a body part having one end installed on the fixing frame or the base frame, and a fixing clip installed on the other end of the body part to be coupled to or separated from the tube bundle, forming a tube bundle conveying device. Claim 7 In paragraph 6, the body part is a tube bundle conveying device that is a cylinder or a wire winch. Claim 8 In claim 6, the fixing clip comprises a first fixing plate installed at the other end of the body portion and a second fixing plate positioned opposite to the first fixing plate, and the tube bundle conveying device in which the helical tube is arranged in a line between the first fixing plate and the second fixing plate. Claim 9 In paragraph 3, the tube bundle conveying device comprises a lifting unit having a body frame installed on the upper part of the conveying unit, a lifting frame having its upper end installed at the lower part of the base frame, and a lifting cylinder installed between the body frame and the lifting frame to raise or lower the lifting frame. Claim 10 A tube bundle conveying device according to claim 1, wherein the conveying unit comprises a support frame on which the lower part of the lifting unit is installed at the upper part, and a driving unit installed on the support frame to move the support frame. Claim 11 In item 10, the transfer unit further comprises a weight installed on the upper part of the support frame. Claim 12 In claim 10, the tube bundle conveying device further comprises a level adjustment part installed on the side end of the support frame and in contact with the ground. Claim 13 In claim 12, the level adjustment part comprises a hinge frame installed on the support frame, a pivot frame having one end hinge-coupled to the hinge frame, a rotating shaft screw-coupled through the other end of the pivot frame, and a support part installed at the lower end of the rotating shaft and in contact with the floor surface, forming a tube bundle conveying device. Claim 14 A tube bundle transport method using a tube bundle transport device of claim 1, comprising: a tube bundle penetration step in which the tube hanger penetrates the tube bundle and the tube bundle is mounted on the tube hanger; a tube bundle fixing step in which the tube bundle is coupled to the tube fixing part; a tube bundle inlet step in which the tube hanger is introduced into the interior of the steam generator; and a tube bundle fixing release step in which the tube bundle is separated from the tube fixing part. Claim 15 In claim 14, the tube bundle penetration step is a tube bundle transport method that adjusts the height of the tube hanger based on the height of the tube bundle in which the lifting part is horizontally positioned. Claim 16 In claim 14, the tube bundle fixing step is a tube bundle transport method in which the conveying part is fixed to the floor before the tube bundle is coupled to the tube fixing part. Claim 17 In claim 14, the tube bundle inlet step is a tube bundle transport method that adjusts the height of the tube hanger based on the height of the steam generator in which the lifting part is horizontally positioned. Claim 18 In claim 14, the tube bundle fixing release step is a tube bundle transport method in which the transport unit is fixed to the floor before separating the tube bundle from the tube fixing unit.

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