Oversized heavy floating head heat exchanger assembly equipment

Abstract

The invention relates to the technical field of assembly equipment, in particular to oversized heavy floating head heat exchanger assembly equipment which comprises a base, one end of the base is fixedly connected with a three-jaw chuck, the other end of the base is provided with a translation pedestal, and the translation pedestal is fixedly connected with an installation support. A clamping mechanism used for clamping a baffle plate to be assembled is arranged on the installation support, and a supporting mechanism is further arranged on the translation pedestal. According to the device, the baffle plate can be fixed to the correct position through the arranged clamping mechanism, then the drooping and deforming heat exchange tube can be lifted up through the supporting strip plate through the supporting mechanism, the heat exchange tube is restored to be in the horizontal state, it is ensured that the heat exchange tube is aligned with the hole position in the baffle plate, and meanwhile, the heat exchange tube is prevented from falling off. The supporting mechanism and the clamping mechanism can move together, so that no matter where the baffle plate moves, the supporting strip plate can recover the heat exchange tube in front of the supporting strip plate to a horizontal state, and the baffle plate can smoothly move to the mounting position.

Description

Technical Field

[0001] The present invention relates to the technical field of assembly equipment, and particularly to an assembly equipment for an extra-large heavy floating head heat exchanger. Background Art

[0002] For a floating head heat exchanger, only one end of the two tube sheets at both ends is fixed to the shell, and the other end can move freely relative to the shell, which is called a floating head. The floating head consists of a floating tube sheet, a hook ring and a floating head end cover, and is a detachable connection, and the tube bundle can be withdrawn from the shell. The thermal deformation of the tube bundle and the shell are not mutually restricted, so no thermal stress will be generated. Its advantages are that it is convenient to clean between the tubes and inside the tubes, and no thermal stress will be generated; however, its structure is complex, the manufacturing cost is higher than that of a fixed tube sheet heat exchanger, the equipment is heavy, the material consumption is large, and the small cover at the floating head end cannot be inspected during operation, and the sealing requirement is relatively high during manufacturing. It is applicable to the occasions where the wall temperature difference between the shell and the tube bundle is relatively large or the shell side medium is easy to scale.

[0003] In the prior art, when assembling heat exchange tubes and baffles, the method of fixing the baffle and sequentially installing the heat exchange tubes is usually adopted. In comparison, the method of fixing the heat exchange tubes and installing the baffle has higher assembly efficiency. However, when using this method, one end of the heat exchange tube must lack support, resulting in a slight sag deformation at the end of the heat exchange tube, and the conventional support frame cannot support all the densely arranged heat exchange tubes, which instead makes it difficult to install the baffle. Summary of the Invention

[0004] The purpose of the present invention is to provide an assembly equipment for an extra-large heavy floating head heat exchanger to solve the problem that the baffle is difficult to install due to the deformation of the heat exchange tube in the method of fixing the heat exchange tube and installing the baffle as mentioned in the above background art. To achieve the above purpose, the present invention provides the following technical solutions: An assembly equipment for an extra-large heavy floating head heat exchanger, including a base. One end of the base is fixedly connected with a three-jaw chuck, and a translation pedestal is arranged at the other end of the base. An installation bracket is fixedly connected to the translation pedestal. A clamping mechanism for clamping the baffle to be assembled is arranged on the installation bracket. A support mechanism is also arranged on the translation pedestal. A triggering mechanism is further arranged on the base. The clamping mechanism will be connected to the triggering mechanism during the movement process. The support mechanism is used to support the heat exchange tubes to align the heat exchange tubes with the holes on the baffle during the assembly process.

[0005] Preferably, the support mechanism includes two symmetrically arranged mounting frames on the translation pedestal. Sliding grooves are respectively opened on the mounting frames. Moving rods are slidably connected in the sliding grooves. Driving brackets are fixedly connected to the moving rods. Driving grooves are respectively opened on the driving brackets. A traction cylinder is connected between the driving bracket and the same-side mounting frame.

[0006] Preferably, the ends of the mounting brackets are rotatably connected with rotating brackets, an eccentric guide rod one is fixedly connected to the rotating brackets, the guide rod one is slidably and rotatably connected in the driving groove, a connecting strip plate is also slidably connected to the rotating brackets, a guide block is fixedly connected to the connecting strip plate, guiding brackets are fixedly connected to the mounting brackets, a guiding inclined surface is formed on the guiding brackets, the guide block will abut against the guiding inclined surface during rotation, and a plurality of supporting strip plates are evenly and fixedly connected to the connecting strip plate, and the ends of the two corresponding supporting strip plates on the two connecting strip plates are lapped.

[0007] Preferably, the clamping mechanism includes a rotating shaft rotatably connected to the mounting bracket, a disc is fixedly connected to one end of the rotating shaft, a clamping bracket one and a clamping bracket two are slidably connected to the disc, limiting strips are fixedly connected to both the clamping bracket one and the clamping bracket two, and two symmetrically arranged clamping cylinders are fixedly connected between the two limiting strips.

[0008] Preferably, a torsion assembly is arranged on the other end of the rotating shaft, a locking assembly is arranged between the rotating shaft and the mounting bracket, and both the torsion assembly and the locking assembly are connected to the triggering mechanism during movement.

[0009] Preferably, the torsion assembly includes a transmission rotating shaft rotatably connected to the rotating shaft, an end face ratchet one is slidably connected to the rotating shaft, a spring one is connected between the end face ratchet one and the rotating shaft, an end face ratchet two is fixedly connected to one end of the transmission rotating shaft, the end face ratchet two is engaged with the end face ratchet one, and a guide rod two is fixedly connected to the other end of the transmission rotating shaft.

[0010] Preferably, the locking assembly includes a connecting block and a stop block fixedly connected to the mounting bracket, a locking rod is slidably connected to the connecting block, two locking holes are symmetrically formed on the rotating shaft, the locking rod is slidably inserted into one of the locking holes, a spring two is connected between the locking rod and the stop block, and a guide rod three is also slidably connected to the locking rod.

[0011] Preferably, the triggering mechanism includes a fixed bracket fixedly connected to the base, a guiding cylinder and a guiding plate are fixedly connected to the fixed bracket, a spiral groove is formed on the guiding cylinder, the guide rod two will enter the spiral groove during movement, a guiding groove is formed on the guiding plate, the guide rod three will enter the guiding groove during movement, and a guiding slope is also arranged in the guiding groove.

[0012] Preferably, a driving structure is arranged inside the translation pedestal to enable the translation pedestal to automatically translate on the base.

[0013] Preferably, the three-jaw chuck is used to clamp the fixed tube sheet, which is a component in the floating head heat exchanger. A number of heat exchange tubes are evenly and fixedly connected to the fixed tube sheet, and baffles are slidably connected to the heat exchange tubes at equal intervals.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: In the present invention, through the clamping mechanism provided, the baffle can be fixed in the correct position. Then, through the support mechanism, the sagging and deformed heat exchange tubes can be lifted upward by the support strip plates, so that the heat exchange tubes are restored to a horizontal state, ensuring that the positions of the holes on the heat exchange tubes and the baffles are aligned. At the same time, the support mechanism and the clamping mechanism can move together, so that no matter where the baffle moves, the support strip plates can restore the heat exchange tubes in front of it to a horizontal state, thus enabling the baffle to be smoothly moved to the installation position.

[0015] In the present invention, through the torsion assembly provided, in cooperation with the trigger mechanism, it can drive the disc and the components thereon to flip 180 degrees during the reset process of the clamping mechanism to adapt to the situation where the adjacent baffles are upside down.

[0016] In the present invention, through the locking assembly provided, in cooperation with the trigger mechanism, it can be automatically unlocked when the rotating shaft rotates, and can be automatically locked after the rotation of the rotating shaft is completed, thus ensuring that the clamping mechanism does not deflect during movement, resulting in the inaccurate position of the baffle. Description of the Drawings

[0017] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the structural schematic diagram of the support mechanism in the present invention; Figure 3 is the exploded schematic diagram of the support mechanism in the present invention; Figure 4 is the structural schematic of the clamping mechanism in the present invention Figure 1 ; Figure 5 is the structural schematic of the clamping mechanism in the present invention Figure 2 ; Figure 6 is the structural schematic diagram of the torsion assembly and the locking assembly in the present invention; Figure 7 is the structural schematic of the trigger mechanism in the present invention Figure 1 ; Figure 8 is the structural schematic of the trigger mechanism in the present invention Figure 2 。

[0018] In the figure: 1. Base; 2. Three-jaw chuck; 3. Translation pedestal; 4. Mounting bracket; 5. Clamping mechanism; 501. Rotating shaft; 502. Disc; 503. First clamping bracket; 504. Second clamping bracket; 505. Limit strip; 506. Clamping cylinder; 507. Torsion assembly; 5071. Transmission rotating shaft; 5072. First end face ratchet; 5073. First spring; 5074. Second end face ratchet; 5075. Second guide rod; 508. Locking assembly; 5081. Connecting block; 5082. Stop block; 5083. Locking rod; 5084. Locking hole; 5085. Second spring; 5086. Third guide rod; 6. Support mechanism; 601. Mounting frame; 602. Chute; 603. Movable rod; 604. Driving bracket; 605. Driving groove; 606. Traction cylinder; 607. Rotating bracket; 608. First guide rod; 609. Connecting strip plate; 610. Guide block; 611. Guiding bracket; 612. Guiding inclined plane; 613. Support strip plate; 7. Trigger mechanism; 701. Fixed bracket; 702. Guiding cylinder; 703. Guiding plate; 704. Spiral groove; 705. Guiding groove; 706. Guiding slope. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical staff in the art without creative efforts belong to the scope of protection of the present invention.

[0020] Please refer to Figures 1 to 8 , the present invention provides a technical solution: An extra-large heavy floating head heat exchanger assembly device, including a base 1, one end of the base 1 is fixedly connected with a three-jaw chuck 2, the other end of the base 1 is provided with a translation pedestal 3, the translation pedestal 3 is fixedly connected with a mounting bracket 4, the mounting bracket 4 is provided with a clamping mechanism 5 for clamping the baffles to be assembled, the translation pedestal 3 is further provided with a support mechanism 6, the base 1 is further provided with a trigger mechanism 7, the clamping mechanism 5 will be connected to the trigger mechanism 7 during the moving process, and the support mechanism 6 is used to support the heat exchange tubes so that the heat exchange tubes are aligned with the holes on the baffles during the assembly process.

[0021] In this embodiment, the support mechanism 6 includes two symmetrically arranged mounting brackets 601 on the translation pedestal 3. Slide grooves 602 are formed in the mounting brackets 601. Movable rods 603 are slidably connected in the slide grooves 602. Driving brackets 604 are fixedly connected to the movable rods 603. Driving grooves 605 are formed in the driving brackets 604. Traction cylinders 606 are connected between the driving brackets 604 and the mounting brackets 601 on the same side.

[0022] In this embodiment, rotating brackets 607 are rotatably connected to the ends of the mounting brackets 601. An eccentric guide rod 608 is fixedly connected to the rotating brackets 607. The guide rod 608 is slidably and rotatably connected in the driving groove 605. A connecting strip 609 is also slidably connected to the rotating brackets 607. A guide block 610 is fixedly connected to the connecting strip 609. Guide brackets 611 are fixedly connected to the mounting brackets 601. Guide inclined surfaces 612 are formed in the guide brackets 611. The guide block 610 will abut against the guide inclined surface 612 during rotation. A plurality of support strips 613 are evenly and fixedly connected to the connecting strip 609. The ends of two corresponding support strips 613 on the two connecting strips 609 overlap.

[0023] In this embodiment, the distance between adjacent baffle plates is large enough. After one baffle plate is installed, when the support strip 613 rotates outward from below the heat exchange tube, the baffle plate will not hinder the rotation of the support strip 613.

[0024] In this embodiment, except for the support strips 613 extending equidistantly from the lowermost part, the heights of all the other support strips 613 are located between two adjacent heat exchange tubes. When the support strip 613 is in the low position, the lower surface of the support strip 613 is close to the lower heat exchange tube. When the support strip 613 is in the high position, the support strip 613 just lifts the upper heat exchange tube, causing the heat exchange tube to overcome the influence of gravity and become horizontal.

[0025] In this embodiment, the clamping mechanism 5 includes a rotating shaft 501 rotatably connected to the mounting bracket 4. A disc 502 is fixedly connected to one end of the rotating shaft 501. A clamping bracket one 503 and a clamping bracket two 504 are slidably connected to the disc 502. Limit strips 505 are fixedly connected to the clamping bracket one 503 and the clamping bracket two 504. Two symmetrically arranged clamping cylinders 506 are fixedly connected between the two limit strips 505.

[0026] In this embodiment, a torsion assembly 507 is arranged at the other end of the rotating shaft 501. A locking assembly 508 is arranged between the rotating shaft 501 and the mounting bracket 4. The torsion assembly 507 and the locking assembly 508 are both connected to the trigger mechanism 7 when moving.

[0027] In this embodiment, the torsion assembly 507 includes a transmission rotating shaft 5071 rotatably connected to the rotating shaft 501. A first end face ratchet 5072 is slidably connected to the rotating shaft 501. A first spring 5073 is connected between the first end face ratchet 5072 and the rotating shaft 501. One end of the transmission rotating shaft 5071 is fixedly connected to a second end face ratchet 5074, which is engaged with the first end face ratchet 5072. A second guide rod 5075 is fixedly connected to the other end of the transmission rotating shaft 5071.

[0028] In this embodiment, the locking assembly 508 includes a connecting block 5081 and a stop block 5082 fixedly connected to the mounting bracket 4. A locking rod 5083 is slidably connected to the connecting block 5081. Two locking holes 5084 are symmetrically formed in the rotating shaft 501. The locking rod 5083 is slidably inserted into one of the locking holes 5084. A second spring 5085 is connected between the locking rod 5083 and the stop block 5082. A third guide rod 5086 is also slidably connected to the locking rod 5083.

[0029] In this embodiment, the triggering mechanism 7 includes a fixed bracket 701 fixedly connected to the base 1. A guiding cylinder 702 and a guiding plate 703 are fixedly connected to the fixed bracket 701. A spiral groove 704 is formed in the guiding cylinder 702. The second guide rod 5075 will enter the spiral groove 704 during movement. A guiding groove 705 is formed in the guiding plate 703. The third guide rod 5086 will enter the guiding groove 705 during movement. A guiding slope 706 is also provided in the guiding groove 705.

[0030] In this embodiment, when the third guide rod 5086 starts to enter the guiding groove 705, the guiding slope 706 will obstruct the third guide rod 5086 and force it to change the moving direction. When the third guide rod 5086 moves out of the guiding groove 705 and passes through the guiding slope 706, the guiding slope 706 will force the third guide rod 5086 to slide upward, so that the third guide rod 5086 can pass through the upper surface of the guiding slope 706. The third guide rod 5086 will move downward under the action of gravity after passing through the guiding slope 706. The guiding slope 706 plays a role in guiding the moving direction of the third guide rod 5086, enabling the third guide rod 5086 to move unidirectionally along the loop of the guiding groove 705.

[0031] In this embodiment, a driving structure is provided inside the translation table base 3, enabling the translation table base 3 to automatically translate on the base 1.

[0032] In this embodiment, the three-jaw chuck 2 is used to clamp the fixed tube sheet, which is a component of the floating head heat exchanger. A number of heat exchange tubes are fixedly connected to the fixed tube sheet at equal intervals, and baffles are slidably connected to the heat exchange tubes at equal distances.

[0033] When this super-large heavy floating head heat exchanger assembly equipment is working, the working process is as follows: During use, first extend the clamping cylinder 506 to move the clamping bracket one 503 and the clamping bracket two 504 away from each other. Then place the baffle to be assembled between the clamping bracket one 503 and the clamping bracket two 504 and make it abut against the disc 502. Then contract the clamping cylinder 506, and the clamping bracket one 503 and the clamping bracket two 504 will move closer to fix the baffle. During the process of the traction cylinder 606 extending until it stops, it will drive the leading bracket 604 and the movable rod 603 to slide along the chute 602. Since the guide rod one 608 slides and is connected in the leading groove 605, the translation of the leading bracket 604 will drive the rotating bracket 607 to rotate. The rotating bracket 607 drives the two support strip plates 613 thereon to turn inward from a position parallel to the heat exchange tubes. When the two support strip plates 613 are about to align and overlap, the guide block 610 on the connecting strip plate 609 will abut against the guiding inclined surface 612, causing the connecting strip plate 609 and the support strip plates 613 thereon to move upward, lifting the heat exchange tubes that are bent downward under the influence of gravity, so that the ends of the heat exchange tubes are aligned with the corresponding hole positions on the baffle. Then the translation base 3 moves, driving the clamping mechanism 5 and the support mechanism 6 to move. After the baffle reaches the assembly position, the clamping cylinder 506 extends to release the clamping of the baffle. At this time, only the heat exchange tubes exert a force on the baffle, and the baffle can stay stably. Then contract the traction cylinder 606 to turn the overlapping support strip plates 613 outward until they are parallel to the heat exchange tubes, avoiding the baffle. During the process of the translation base 3 resetting, the support strip plates will not affect the baffle. During the process of the translation base 3 resetting, the guide rod two 5075 will enter the spiral groove 704, driving the transmission rotating shaft 5071 to rotate 180 degrees. The transmission rotating shaft 5071 drives the rotating shaft 501 and the disc 502 to rotate 180 degrees through the engaged end face ratchet one 5072 and end face ratchet two 5074. When the guide rod two 5075 leaves the spiral groove 704, due to the one-way transmission characteristic of the ratchet, the rotating shaft 501 will not be driven to rotate. When the guide rod two 5075 enters the spiral groove 704, the guide rod three 5086 also enters the guiding groove 705 and drives the locking rod 5083 to be withdrawn from the locking hole 5084 before the rotating shaft 501 starts to rotate. When the rotating shaft 501 finishes rotating, the locking rod 5083 will also be inserted into the locking hole 5084 at the same time to lock the rotating shaft 501.

[0034] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and the descriptions in the specification are only preferred examples of the present invention, which are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. Ultra-large heavy floating head heat exchanger assembly equipment, including a base (1), one end of the base (1) is fixedly connected with a three-jaw chuck (2), and it is characterized in that: On the other end of the base (1), a translation pedestal (3) is provided. An installation bracket (4) is fixedly connected to the translation pedestal (3). A clamping mechanism (5) for clamping the baffles to be assembled is provided on the installation bracket (4). A support mechanism (6) is also provided on the translation pedestal (3). A trigger mechanism (7) is also provided on the base (1). During the movement process, the clamping mechanism (5) will be connected to the trigger mechanism (7). The support mechanism (6) is used to support the heat exchange tubes so that the heat exchange tubes are aligned with the holes on the baffles during the assembly process.

2. The ultra-large heavy floating head heat exchanger assembly equipment according to claim 1, characterized in that: The support mechanism (6) includes two symmetrically arranged mounting frames (601) on the translation pedestal (3). Sliding grooves (602) are opened on the mounting frames (601). Movable rods (603) are slidably connected in the sliding grooves (602). Driving brackets (604) are fixedly connected to the movable rods (603). Driving grooves (605) are opened on the driving brackets (604). A traction cylinder (606) is connected between the driving bracket (604) and the mounting frame (601) on the same side; Rotating brackets (607) are rotatably connected to the ends of the mounting frames (601). Eccentric guide rods one (608) are fixedly connected to the rotating brackets (607). The guide rod one (608) is slidably and rotatably connected in the driving groove (605). A connecting strip (609) is also slidably connected to the rotating bracket (607). A guide block (610) is fixedly connected to the connecting strip (609). Guide brackets (611) are fixedly connected to the mounting frames (601). Guide slopes (612) are opened on the guide brackets (611). During the rotation process, the guide block (610) will abut against the guide slope (612). A number of support strips (613) are evenly and fixedly connected to the connecting strip (609). The ends of the two corresponding support strips (613) on the two connecting strips (609) overlap.

3. The super-large heavy floating head heat exchanger assembly equipment according to claim 1, characterized in that: The clamping mechanism (5) includes a rotating shaft (501) rotatably connected to the mounting bracket (4). A disc (502) is fixedly connected to one end of the rotating shaft (501). A clamping bracket one (503) and a clamping bracket two (504) are slidably connected to the disc (502). Limit strips (505) are fixedly connected to the clamping bracket one (503) and the clamping bracket two (504). Two symmetrically arranged clamping cylinders (506) are fixedly connected between the two limit strips (505); A torsion assembly (507) is provided on the other end of the rotating shaft (501). A locking assembly (508) is provided between the rotating shaft (501) and the mounting bracket (4). Both the torsion assembly (507) and the locking assembly (508) will be connected to the trigger mechanism (7) during movement.

4. The super-large heavy floating head heat exchanger assembly equipment according to claim 3, characterized in that: The torsion assembly (507) includes a transmission rotating shaft (5071) rotatably connected to the rotating shaft (501). A first end face ratchet (5072) is slidably connected to the rotating shaft (501). A first spring (5073) is connected between the first end face ratchet (5072) and the rotating shaft (501). One end of the transmission rotating shaft (5071) is fixedly connected to a second end face ratchet (5074). The second end face ratchet (5074) engages with the first end face ratchet (5072). The other end of the transmission rotating shaft (5071) is fixedly connected to a second guide rod (5075).

5. The super-large heavy floating head heat exchanger assembly equipment according to claim 4, characterized in that: The locking assembly (508) includes a connecting block (5081) and a stop block (5082) fixedly connected to the mounting bracket (4). A locking rod (5083) is slidably connected to the connecting block (5081). Two locking holes (5084) are symmetrically formed on the rotating shaft (501). The locking rod (5083) is slidably inserted into one of the locking holes (5084). A second spring (5085) is connected between the locking rod (5083) and the stop block (5082). A third guide rod (5086) is also slidably connected to the locking rod (5083).

6. The super-large heavy floating head heat exchanger assembly equipment according to claim 5, characterized in that: The triggering mechanism (7) includes a fixed bracket (701) fixedly connected to the base (1). A guiding cylinder (702) and a guiding plate (703) are fixedly connected to the fixed bracket (701). A spiral groove (704) is formed on the guiding cylinder (702). The second guide rod (5075) will enter the spiral groove (704) during movement. A guiding groove (705) is formed on the guiding plate (703). The third guide rod (5086) will enter the guiding groove (705) during movement. A guiding slope (706) is also provided in the guiding groove (705).

7. The super-large heavy floating head heat exchanger assembly equipment according to claim 1, characterized in that: A driving structure is provided inside the translation pedestal (3) to enable the translation pedestal (3) to automatically translate on the base (1).

8. The super-large heavy floating head heat exchanger assembly equipment according to claim 1, characterized in that: The three-jaw chuck (2) is used to clamp the fixed tube sheet, which is a component in the floating head heat exchanger. A plurality of heat exchange tubes are uniformly and fixedly connected to the fixed tube sheet. Baffle plates are slidably connected to the heat exchange tubes at equal intervals.

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