Extra large heavy floating head heat exchanger assembly equipment

Abstract

The present invention relates to the technical field of assembly equipment, specifically to an assembly equipment for an ultra-large heavy-duty floating head heat exchanger, comprising a base, one end of the base being fixedly connected to a three-jaw chuck, the other end of the base being provided with a translation platform, the translation platform being fixedly connected to a mounting bracket, the mounting bracket being provided with a clamping mechanism for clamping the baffle to be assembled, and the translation platform being further provided with a support mechanism. In the present invention, the baffle can be fixed in the correct position by the provided clamping mechanism, and then the support mechanism can lift the drooping and deformed heat exchange tube upwards through the support strips, so that the heat exchange tube is restored to a horizontal state, ensuring that the heat exchange tube is aligned with the hole position on the baffle. At the same time, the support mechanism and the clamping mechanism can move together, so that no matter where the baffle moves, the support strips can restore the heat exchange tube in front of it to a horizontal state, so that the baffle can be smoothly moved to the installation position.

Description

Technical Field

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

[0002] In a floating-head heat exchanger, only one of the two tubesheets is fixed to the shell; the other end, called a floating head, is free to move relative to the shell. The floating head, consisting of a floating tubesheet, hook rings, and floating head end caps, is a detachable connection, allowing the tube bundle to be withdrawn from the shell. Thermal deformation of the tube bundle and the shell is independent of each other, thus eliminating thermal stress. Its advantages include easy cleaning between and within the tubes and the elimination of thermal stress. However, its complex structure makes it more expensive than a fixed-tubesheet heat exchanger, resulting in heavier equipment and higher material consumption. Furthermore, the small caps on the floating head end cannot be inspected during operation, requiring stricter sealing requirements during manufacturing. This type of heat exchanger is suitable for applications with large wall temperature differences between the shell and the tube bundle, or where scaling of the shell-side medium is likely.

[0003] In the prior art, when assembling heat exchange tubes and baffles, the baffles are usually fixed and the heat exchange tubes are installed in sequence. In comparison, the method of fixing the heat exchange tubes and installing the baffles has higher assembly efficiency. However, when using this method, one end of the heat exchange tube must lack support, causing the end of the heat exchange tube to sag slightly and deform. Conventional support frames cannot support all the densely arranged heat exchange tubes, but instead make it difficult to install the baffles. Summary of the Invention

[0004] The present invention aims to provide an assembly device for an ultra-large, heavy-duty floating head heat exchanger to address the difficulty in installing baffles due to deformation of the heat exchange tubes, a problem encountered in the aforementioned background art method of fixing the heat exchange tubes and installing the baffles. To achieve this objective, the present invention provides the following technical solutions:

[0005] The assembly equipment of an extra-large heavy-duty floating head heat exchanger includes a base, one end of which is fixedly connected to a three-jaw chuck, and the other end of the base is provided with a translation platform, and the translation platform is fixedly connected to a mounting bracket, and the mounting bracket is provided with a clamping mechanism for clamping the baffle to be assembled, and the translation platform is also provided with a supporting mechanism, and the base is also provided with a trigger mechanism, and the clamping mechanism will be connected to the trigger mechanism during the movement, and the supporting mechanism is used to support the heat exchange tube so that the heat exchange tube is aligned with the holes on the baffle during the assembly process.

[0006] Preferably, the support mechanism includes two symmetrical mounting brackets arranged on the translation platform, each mounting bracket is provided with a sliding groove, each sliding groove is slidably connected to a movable rod, each movable rod is fixedly connected to an guiding bracket, each guiding bracket is provided with a guiding groove, and a traction cylinder is connected between the guiding bracket and the mounting bracket on the same side.

[0007] Preferably, the ends of the mounting brackets are rotatably connected to rotating brackets, an eccentric guide rod 1 is fixedly connected to the rotating bracket, the guide rod 1 is slidably and rotatably connected in the guide groove, the rotating bracket is also slidably connected to a connecting strip plate, a guide block is fixedly connected to the connecting strip plate, the mounting brackets are fixedly connected to the guide brackets, a guide inclined surface is provided on the guide bracket, and the guide block will abut against the guide inclined surface during rotation, and a number of support strip plates are also evenly fixedly connected to the connecting strip plates, and the ends of the two corresponding support strip plates on the two connecting strip plates are overlapped.

[0008] Preferably, the clamping mechanism includes a rotating shaft rotatably connected to the mounting bracket, one end of the rotating shaft is fixedly connected to a disc, a clamping bracket 1 and a clamping bracket 2 are slidably connected to the disc, and a limiting strip is fixedly connected to the clamping bracket 1 and the clamping bracket 2, and two symmetrically arranged clamping cylinders are fixedly connected between the two limiting strips.

[0009] Preferably, a torsion assembly is provided on the other end of the rotating shaft, and a locking assembly is provided between the rotating shaft and the mounting bracket, and both the torsion assembly and the locking assembly are connected to the trigger mechanism when moving.

[0010] Preferably, the torsion assembly includes a transmission shaft rotatably connected to a rotating shaft, an end face ratchet 1 is slidably connected to the rotating shaft, a spring 1 is connected between the end face ratchet 1 and the rotating shaft, one end of the transmission shaft is fixedly connected to an end face ratchet 2, the end face ratchet 2 is engaged with the end face ratchet 1, and the other end of the transmission shaft is fixedly connected to a guide rod 2.

[0011] 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 opened on the rotating shaft, the locking rod is slidably inserted into one of the locking holes, a spring 2 is connected between the locking rod and the stop block, and a guide rod 3 is also slidably connected to the locking rod.

[0012] Preferably, the trigger mechanism includes a fixed bracket fixedly connected to the base, a guide cylinder and a guide plate are fixedly connected to the fixed bracket, a spiral groove is provided on the guide cylinder, and the guide rod 2 will enter the spiral groove during the movement, a guide groove is provided on the guide plate, and the guide rod 3 will enter the guide groove during the movement, and a guide slope is also provided in the guide groove.

[0013] Preferably, a driving structure is provided inside the translation platform, so that the translation platform can automatically translate on the base.

[0014] Preferably, the three-jaw chuck is used to clamp a fixed tube sheet of a component in a floating head heat exchanger, a plurality of heat exchange tubes are evenly fixedly connected to the fixed tube sheet, and baffles are equidistantly slidably connected to the heat exchange tubes.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In the present invention, the baffle can be fixed in the correct position through the provided clamping mechanism, and then the supporting mechanism can lift the drooping and deformed heat exchange tube upward through the supporting strips, so that the heat exchange tube is restored to a horizontal state, ensuring that the heat exchange tube is aligned with the hole position on the baffle. At the same time, the supporting mechanism and the clamping mechanism can move together, so that no matter where the baffle moves, the supporting strips can restore the heat exchange tube in front of it to a horizontal state, so that the baffle can be smoothly moved to the installation position.

[0017] In the present invention, the torsion assembly is provided, and in cooperation with the trigger mechanism, the disc and the components thereon can be driven to flip 180 degrees during the resetting process of the clamping mechanism to adapt to the situation where adjacent baffles are upside down.

[0018] In the present invention, a locking assembly is provided, which can automatically unlock when the rotating shaft rotates with the cooperation of the trigger mechanism, and can automatically lock after the rotating shaft rotates, thereby ensuring that the clamping mechanism deflects during movement, causing the position of the baffle to be no longer accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 Schematic diagram of the structure of the support mechanism of the present invention;

[0021] Figure 3 Schematic diagram of the explosion of the support mechanism of the present invention;

[0022] Figure 4 The structure diagram of the clamping mechanism in the present invention is shown in FIG. Figure 1 ;

[0023] Figure 5 The structure diagram of the clamping mechanism in the present invention is shown in FIG. Figure 2 ;

[0024] Figure 6 Schematic diagram of the structure of the twisting assembly and the locking assembly in the present invention;

[0025] Figure 7 The structure of the trigger mechanism in the present invention is shown as follows Figure 1 ;

[0026] Figure 8The structure of the trigger mechanism in the present invention is shown as follows Figure 2 .

[0027] In the figure: 1. Base; 2. Three-jaw chuck; 3. Translation platform; 4. Mounting bracket; 5. Clamping mechanism; 501. Rotating shaft; 502. Disc; 503. Clamping bracket 1; 504. Clamping bracket 2; 505. Limiting bar; 506. Clamping cylinder; 507. Torsion assembly; 5071. Transmission shaft; 5072. End face ratchet 1; 5073. Spring 1; 5074. End face ratchet 2; 5075. Guide rod 2; 508. Locking assembly; 5081. Connecting block; 5082. Stop block; 5083. Locking rod; 5084. Locking hole; 5 085. Spring 2; 5086. Guide rod 3; 6. Support mechanism; 601. Mounting frame; 602. Slide groove; 603. Movable rod; 604. Guide bracket; 605. Guide groove; 606. Traction cylinder; 607. Rotating bracket; 608. Guide rod 1; 609. Connecting strip; 610. Guide block; 611. Guide bracket; 612. Guide slope; 613. Support strip; 7. Trigger mechanism; 701. Fixed bracket; 702. Guide cylinder; 703. Guide plate; 704. Spiral groove; 705. Guide groove; 706. Guide slope. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0029] See also Figures 1 to 8 , the present invention provides a technical solution:

[0030] The assembly equipment of an extra-large heavy-duty floating head heat exchanger includes a base 1, one end of which is fixedly connected to a three-jaw chuck 2, and the other end of the base 1 is provided with a translation platform 3, and the translation platform 3 is fixedly connected to a mounting bracket 4, and the mounting bracket 4 is provided with a clamping mechanism 5 for clamping the baffle to be assembled, and the translation platform 3 is also provided with a supporting mechanism 6, and the base 1 is also provided with a trigger mechanism 7, and the clamping mechanism 5 will be connected to the trigger mechanism 7 during the movement, and the supporting mechanism 6 is used to support the heat exchange tube so that the heat exchange tube is aligned with the holes on the baffle during the assembly process.

[0031] In this embodiment, the support mechanism 6 includes two symmetrical mounting frames 601 arranged on the translation platform 3, each mounting frame 601 is provided with a sliding groove 602, each sliding groove 602 is slidably connected with a movable rod 603, each movable rod 603 is fixedly connected with an guiding bracket 604, each guiding bracket 604 is provided with a guiding groove 605, and a traction cylinder 606 is connected between the guiding bracket 604 and the mounting frame 601 on the same side.

[0032] In this embodiment, the ends of the mounting frame 601 are rotatably connected to a rotating bracket 607, and an eccentric guide rod 608 is fixedly connected to the rotating bracket 607, and the guide rod 608 is slidably and rotatably connected in the guide groove 605. The rotating bracket 607 is also slidably connected to a connecting strip 609, and a guide block 610 is fixedly connected to the connecting strip 609. The mounting frame 601 is fixedly connected to a guide bracket 611, and a guide inclined surface 612 is provided on the guide bracket 611. The guide block 610 will abut against the guide inclined surface 612 during rotation. A number of support strips 613 are also evenly and fixedly connected to the connecting strip 609, and the ends of the two corresponding support strips 613 on the two connecting strips 609 are overlapped.

[0033] In this embodiment, the distance between two adjacent baffles is large enough. After one baffle is installed, when the support strip 613 rotates outward from under the heat exchange tube, the baffle will not hinder the rotation of the support strip 613.

[0034] In this embodiment, except for the support strip 613 extending equidistantly from the bottom, the height of all other support strips 613 is located between two adjacent heat exchange tubes. When the support strip 613 is in a low position, the lower surface of the support strip 613 is close to the heat exchange tube below, and when the support strip 613 is in a high position, the support strip 613 just lifts the upper heat exchange tube, so that the heat exchange tube overcomes the influence of gravity and becomes horizontal.

[0035] In this embodiment, the clamping mechanism 5 includes a rotating shaft 501 rotatably connected to the mounting bracket 4, one end of the rotating shaft 501 is fixedly connected to a disc 502, a clamping bracket 1 503 and a clamping bracket 2 504 are slidably connected to the disc 502, and the clamping bracket 1 503 and the clamping bracket 2 504 are both fixedly connected to a limiting bar 505, and two symmetrically arranged clamping cylinders 506 are fixedly connected between the two limiting bars 505.

[0036] In this embodiment, a torsion assembly 507 is provided on the other end of the rotating shaft 501, and a locking assembly 508 is provided 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.

[0037] In this embodiment, the torsion assembly 507 includes a transmission shaft 5071 rotatably connected to the rotating shaft 501, an end face ratchet 5072 is slidably connected to the rotating shaft 501, a spring 5073 is connected between the end face ratchet 5072 and the rotating shaft 501, one end of the transmission shaft 5071 is fixedly connected to an end face ratchet 5074, the end face ratchet 5074 is engaged with the end face ratchet 5072, and the other end of the transmission shaft 5071 is fixedly connected to a guide rod 2 5075.

[0038] 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 opened on the rotating shaft 501, the locking rod 5083 is slidably inserted into one of the locking holes 5084, a spring 2 5085 is connected between the locking rod 5083 and the stop block 5082, and a guide rod 3 5086 is also slidably connected to the locking rod 5083.

[0039] In this embodiment, the trigger mechanism 7 includes a fixed bracket 701 fixedly connected to the base 1, and a guide cylinder 702 and a guide plate 703 are fixedly connected to the fixed bracket 701. The guide cylinder 702 is provided with a spiral groove 704, and the guide rod 2 5075 will enter the spiral groove 704 during the movement. The guide plate 703 is provided with a guide groove 705, and the guide rod 3 5086 will enter the guide groove 705 during the movement. A guide slope 706 is also provided in the guide groove 705.

[0040] In this embodiment, when the guide rod three 5086 begins to enter the guide groove 705, the guide ramp 706 will hinder the guide rod three 5086 and force it to change its moving direction. When the guide rod three 5086 moves outward from the guide groove 705 and passes through the guide ramp 706, the guide ramp 706 will force the guide rod three 5086 to slide upward, thereby allowing the guide rod three 5086 to pass through the upper surface of the guide ramp 706. After passing through the guide ramp 706, the guide rod three 5086 will move downward under the action of gravity. The guide ramp 706 plays a role in guiding the moving direction of the guide rod three 5086, so that the guide rod three 5086 can move unidirectionally along the loop of the guide groove 705.

[0041] In this embodiment, a driving structure is provided inside the translation platform 3 so that the translation platform 3 can automatically translate on the base 1 .

[0042] In this embodiment, the three-jaw chuck 2 is used to clamp the fixed tube sheet of the floating head heat exchanger, on which a plurality of heat exchange tubes are evenly fixedly connected, and baffles are equidistantly slidably connected to the heat exchange tubes.

[0043] When this type of super-large heavy-duty floating head heat exchanger assembly equipment is in operation, the working process is as follows:

[0044] During use, the clamping cylinder 506 is first extended to move the clamping bracket 1 503 and the clamping bracket 2 504 away from each other, and then the assembled baffle is placed between the clamping bracket 1 503 and the clamping bracket 2 504 and abutted against the disc 502. Then, the clamping cylinder 506 is retracted to move the clamping bracket 1 503 and the clamping bracket 2 504 closer together to fix the baffle.

[0045] When the traction cylinder 606 is extended and stops, it drives the guide bracket 604 and the movable rod 603 to slide along the slide groove 602. Since the guide rod 1 608 slides and is connected to the guide groove 605, the translation of the guide bracket 604 drives the rotating bracket 607 to rotate. The rotating bracket 607 drives the two supporting strips 613 thereon to flip inward from a position parallel to the heat exchange tube. When the two supporting strips 613 are about to be aligned and overlapped together, the guide block 610 on the connecting strip 609 will abut against the guiding inclined surface 612, so that the connecting strip 609 and the supporting strip 613 thereon move upward, lifting the heat exchange tube that is bent downward under the influence of gravity, so that the end of the heat exchange tube is aligned with the corresponding hole position of the baffle.

[0046] Then the translation platform 3 moves, driving the clamping mechanism 5 and the supporting mechanism 6 to move. When 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 force on the baffle, and the baffle can stay stably. Then the pulling cylinder 606 is retracted, causing the overlapping support strips 613 to flip outward until they are parallel to the heat exchange tubes, avoiding the baffle. During the reset process of the translation platform 3, the support strips will not affect the baffle.

[0047] During the restoration of the translation platform 3, the second guide rod 5075 enters the spiral groove 704, driving the transmission shaft 5071 to rotate 180 degrees. The transmission shaft 5071 drives the rotating shaft 501 and the disc 502 to rotate 180 degrees through the engaged end face ratchet 1 5072 and end face ratchet 2 5074. When the second guide rod 5075 leaves the spiral groove 704, the rotating shaft 501 will not be driven to rotate due to the one-way transmission characteristic of the ratchet.

[0048] When guide rod 2 5075 enters the spiral groove 704, guide rod 3 5086 also enters the guide groove 705 and drives the locking rod 5083 to be pulled out from the locking hole 5084 before the rotating shaft 501 starts to rotate. When the rotating shaft 501 completes its rotation, the locking rod 5083 will also be reinserted into the locking hole 5084 at the same time to lock the rotating shaft 501.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembly device for an ultra-large heavy-duty floating head heat exchanger, comprising a base (1), one end of which is fixedly connected to a three-jaw chuck (2), characterized in that: A translation platform (3) is provided on the other end of the base (1), a mounting bracket (4) is fixedly connected to the translation platform (3), a clamping mechanism (5) for clamping the baffle to be assembled is provided on the mounting bracket (4), a supporting mechanism (6) is also provided on the translation platform (3), and a trigger mechanism (7) is also provided on the base (1), the clamping mechanism (5) is connected to the trigger mechanism (7) during the movement, and the supporting mechanism (6) is used to support the heat exchange tube so that the heat exchange tube is aligned with the hole on the baffle during the assembly process; The support mechanism (6) comprises two symmetrical mounting frames (601) arranged on the translation platform (3), each mounting frame (601) is provided with a slide groove (602), each slide groove (602) is slidably connected to a movable rod (603), each movable rod (603) is fixedly connected to an induced bracket (604), each induced bracket (604) is provided with an induced groove (605), and a traction cylinder (606) is connected between the induced bracket (604) and the mounting frame (601) on the same side; The ends of the mounting frame (601) are rotatably connected to a rotating bracket (607), an eccentric guide rod (608) is fixedly connected to the rotating bracket (607), and the guide rod (608) is slidably and rotatably connected to the guide groove (605). The rotating bracket (607) is also slidably connected to a connecting strip (609), and a guide block (610) is fixedly connected to the connecting strip (609). The mounting frame (601) is fixedly connected to a guide bracket (611), and a guide inclined surface (612) is provided on the guide bracket (611). During the rotation process, the guide block (610) will abut against the guide inclined surface (612), so that the connecting strip (609) and the supporting strip (613) thereon move upward. The connecting strip (609) is also evenly and fixedly connected to a plurality of supporting strips (613), and the ends of the two corresponding supporting strips (613) on the two connecting strips (609) are overlapped. The clamping mechanism (5) includes a rotating shaft (501) rotatably connected to the mounting bracket (4), one end of the rotating shaft (501) is fixedly connected to a disk (502), and the other end of the rotating shaft (501) is provided with a torsion assembly (507), and the torsion assembly (507) is connected to the trigger mechanism (7) when it moves, and the torsion assembly (507) includes a transmission rotating shaft (5071) rotatably connected to the rotating shaft (501), an end face ratchet (5072) is slidably connected to the rotating shaft (501), and a spring (5071) is connected between the end face ratchet (5072) and the rotating shaft (501). 5073), one end of the transmission shaft (5071) is fixedly connected to the end face ratchet wheel 2 (5074), the end face ratchet wheel 2 (5074) is engaged with the end face ratchet wheel 1 (5072), the other end of the transmission shaft (5071) is fixedly connected to the guide rod 2 (5075), the trigger mechanism (7) includes a fixed bracket (701) fixedly connected to the base (1), the fixed bracket (701) is fixedly connected to the guide cylinder (702), the guide cylinder (702) is provided with a spiral groove (704), and the guide rod 2 (5075) enters the spiral groove (704) during the movement.

2. The super-large heavy floating head heat exchanger assembly equipment according to claim 1 is characterized in that: The clamping mechanism (5) further comprises a clamping bracket 1 (503) and a clamping bracket 2 (504) slidably connected to the disc (502), wherein the clamping bracket 1 (503) and the clamping bracket 2 (504) are both fixedly connected to a limit bar (505), and two symmetrically arranged clamping cylinders (506) are fixedly connected between the two limit bars (505), and a locking assembly (508) is provided between the rotating shaft (501) and the mounting bracket (4), and the locking assembly (508) is connected to the trigger mechanism (7) when moving.

3. The super-large heavy floating head heat exchanger assembly equipment according to claim 2 is characterized in that: The locking assembly (508) comprises 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 provided 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); and a third guide rod (5086) is also slidably connected to the locking rod (5083).

4. The super-large heavy floating head heat exchanger assembly equipment according to claim 3 is characterized in that: The trigger mechanism (7) further comprises a guide plate (703) fixedly connected to the fixed bracket (701), wherein a guide groove (705) is provided on the guide plate (703), and the guide rod (5086) enters the guide groove (705) during movement, wherein a guide slope (706) is further provided in the guide groove (705).

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

6. The super-large heavy floating head heat exchanger assembly equipment according to claim 1 is characterized in that: The three-jaw chuck (2) is used to clamp a fixed tube sheet of a component in a floating head heat exchanger, wherein a plurality of heat exchange tubes are evenly fixedly connected to the fixed tube sheet, and baffles are equidistantly slidably connected to the heat exchange tubes.

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