Novel heat exchanger tube bundle pumping machine

Abstract

The utility model discloses a novel heat exchanger tube bundle pumping machine which comprises a machine frame, a main travelling crane is installed on the machine frame, a hanging plate is installed at the front end of the main travelling crane in a lifting mode, and a turnover ejector rod is installed on the main travelling crane. When the device is used, the rack is hoisted to one side of the support through hoisting equipment, then the rack and the flange are tensioned and fixed through the tensioning mechanism, then the first hydraulic cylinder is driven to drive the sliding block to move downwards so that the two translation mechanisms can make contact with the ground, the rack can be supported, then the tensioning mechanism is loosened, and the rack and the flange can be fixed through the tensioning mechanism. Then the first hydraulic cylinder is started to move the rack to the required height, then the translation mechanism is used for aligning the rack to the center of the heat exchange shell in the width direction, and finally the tensioning mechanism is used for fixing the rack and the flange, so that the tube bundle can be extracted and mounted, the operation is simple and convenient, and the rack can be supported on the ground; the stability of the device is guaranteed in the tube bundle drawing and installing process.

Description

Technical Field

[0001] The utility model relates to the technical field of tube bundle extraction and installation, in particular to a novel heat exchanger tube bundle extraction and installation machine. Background Art

[0002] The tube bundle heat exchanger is a typical heat exchange device that enables heat exchange between two fluids with different temperatures.

[0003] The extraction and installation of the heat exchanger tube bundle is basically completed by a tube bundle extraction and installation machine. The tube bundle extraction and installation machine is mainly composed of a frame, a main crane that can move along the length of the frame, and several lifting trolleys. Among them, the main crane is used to provide drive for the tube bundle during the extraction and installation of the tube bundle, and the lifting trolley is mainly used to provide support for the excessively long tube bundle outside the heat exchanger shell, so that the tube bundle and the heat exchanger shell remain radially aligned (coaxial) state, thereby reducing the resistance encountered during the extraction and installation of the tube bundle.

[0004] During the installation and removal process of the heat exchanger tube bundle, the heat exchanger shell needs to be fixed on the bracket, and there are certain differences in the heights of different brackets and the central axis heights of heat exchanger shells of different specifications. Therefore, most of the existing tube bundle installation and removal machines need to be used in conjunction with a crane or other lifting equipment.

[0005] Before the tube bundle is pulled out and installed, the tube bundle puller is hoisted to the end of the heat exchanger shell fixed on the bracket by a lifting device. After the hoisting height of the tube bundle puller and the parallelism with the heat exchanger shell are adjusted, the hydraulically driven clamping claws at the front end of the tube bundle puller are used to fix and clamp the frame of the tube bundle puller and the flange of the heat exchanger shell.

[0006] In the above process, the height adjustment of the tube bundle puller and the parallelism between the tube bundle puller and the heat exchanger shell are completely dependent on the lifting equipment, which places high requirements on the operator. In addition, due to the poor stability of the tube bundle puller during the lifting process and the tendency to swing, it is difficult to align the center of the tube bundle puller with the heat exchanger shell in the width direction. In the process of pulling out and installing the tube bundle, the tube bundle puller is always in a suspended state, with only the front end fixed to the flange at the end of the heat exchanger shell, and the stability is poor. For this reason, we propose a new type of heat exchanger tube bundle puller. Utility Model Content

[0007] The purpose of the utility model is to provide a novel heat exchanger tube bundle extraction and installation machine to solve the problems raised in the above background technology.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A novel heat exchanger tube bundle extraction and installation machine comprises a frame, a main crane is installed on the frame, a hanging plate is installed at the front end of the main crane in a liftable manner, a flippable top rod is installed on the main crane, a plurality of hydraulic support trolleys are slidably installed on the frame near the front end, a tensioning mechanism is installed at the front end of the frame, two support plates are fixedly connected to the outer walls of both sides of the frame, lifting holes are opened on the support plates, a first hydraulic cylinder is fixedly connected to the outer wall of the support plate, a slider is fixedly connected to the push rod end of the first hydraulic cylinder, two translation mechanisms are arranged under the frame, and each translation mechanism is connected to two corresponding sliders.

[0010] As a further solution of the utility model: the translation mechanism includes a base plate, the top of the base plate is fixedly connected to a frame, the slider is located in the corresponding frame, and the slider is slidably connected to the base plate, and a driving mechanism matching the slider is installed on the frame.

[0011] As a further solution of the utility model: the driving mechanism includes a screw rotatably installed in the frame, the outer wall of the frame is fixedly connected to a motor, and the output shaft of the motor is fixedly connected to one end of the screw, and the slider is sleeved on the corresponding screw through a threaded hole.

[0012] As a further solution of the utility model: a slide rail is fixedly connected to the top of the base plate, a slide groove matched with the slide rail is opened at the bottom of the slider, and the slide rail passes through the slide groove, a plurality of guide rods are fixedly connected to the top of the slider, a sleeve is slidably sleeved on the outer wall of the guide rod, and the sleeve is fixedly connected to the frame.

[0013] As a further solution of the utility model: the tensioning mechanism includes a second hydraulic cylinder fixedly installed on the inner side of the front end of the frame, the push rod ends of the second hydraulic cylinder are rotatably connected to clamping blocks, the front end top of the frame is fixedly connected to a stopper, both sides of the front end of the frame are fixedly connected to a third hydraulic cylinder, the push rod ends of the third hydraulic cylinder are connected to a steel cable through a fork, two guide wheels are installed at the bottom of the front end of the frame, and the steel cables pass through the corresponding guide wheels.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] When the utility model is in use, the frame is hoisted to one side of the bracket by a lifting device, and then the frame and the flange are tightened and fixed by a tensioning mechanism, and then the first hydraulic cylinder is driven to drive the sliding block to move downward, so that the two translation mechanisms are in contact with the ground, thereby providing support for the frame, and then the tensioning mechanism is released, and then the first hydraulic cylinder is started to move the frame to a required height, and then the translation mechanism is used to align the frame with the center of the heat exchange shell in the width direction, and finally the tensioning mechanism is used again to fix the frame and the flange, and then the tube bundle can be started to be drawn out and installed, the operation is simple and convenient, and the frame can be supported on the ground to ensure the stability of the device during the process of drawing out and installing the tube bundle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a new type of heat exchanger tube bundle extraction and installation machine.

[0017] Figure 2 This is a schematic diagram of the structure of a translation mechanism in a new type of heat exchanger tube bundle extraction and installation machine.

[0018] Figure 3 for Figure 1 Enlarged view of point A in the middle.

[0019] Among them, the frame 1, the main crane 2, the hanging plate 3, the push rod 4, the hydraulic support trolley 5, the support plate 6, the lifting hole 7, the first hydraulic cylinder 8, the bottom plate 9, the frame 10, the motor 11, the screw 12, the slider 13, the slide rail 14, the guide rod 15, the sleeve 16, the second hydraulic cylinder 17, the clamping block 18, the stopper 19, the third hydraulic cylinder 20, the steel cable 21, the guide wheel 22, the heat exchanger shell 23, the flange 24, the bolt 25, and the bracket 26. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figures 1 to 3In an embodiment of the utility model, a novel heat exchanger tube bundle extraction and installation machine includes a frame 1, a main crane 2 is installed on the frame 1, a hanging plate 3 is installed at the front end of the main crane 2 in a liftable manner, a flippable top rod 4 is installed on the main crane 2, a plurality of hydraulic support trolleys 5 are slidably installed near the front end of the frame 1, a tensioning mechanism is installed at the front end of the frame 1, two support plates 6 are fixedly connected to the outer walls of both sides of the frame 1, a lifting hole 7 is opened on the support plate 6, a first hydraulic cylinder 8 is fixedly connected to the outer wall of the support plate 6, a slider 13 is fixedly connected to the push rod end of the first hydraulic cylinder 8, and two translation mechanisms are arranged below the frame 1, and each translation mechanism is connected to two corresponding sliders 13.

[0022] The utility model adopts the above scheme. When in use, the frame 1 is lifted to one side of the bracket 26 by the cooperation of the lifting equipment and the lifting hole 7, and then the frame 1 and the flange 24 are tightened and fixed by the tensioning mechanism, and then the first hydraulic cylinder 8 is driven to drive the slider 13 to move downward, so that the two translation mechanisms are in contact with the ground, thereby providing support for the frame 1, and then the lifting equipment is removed, and the tensioning mechanism is loosened, and then the first hydraulic cylinder 8 is started to lift and adjust the frame 1 to move the frame 1 to a desired height, and then the translation mechanism is used to translate the frame 1 in the width direction, so that the frame 1 is aligned with the center of the heat exchange shell 23 in the width direction, and finally the tensioning mechanism is used again to fix the frame 1 and the flange 24, and then the tube bundle can be started to be removed and installed. The operation is simple and convenient, and the frame 1 can be supported on the ground to ensure the stability of the device during the removal and installation of the tube bundle.

[0023] Specific combination Figure 1 , Figure 2 In one embodiment of the utility model, the translation mechanism includes a base plate 9, the top of the base plate 9 is fixedly connected to a frame 10, the slider 13 is located in the corresponding frame 10, and the slider 13 is slidably connected to the base plate 9, and a driving mechanism matching the slider 13 is installed on the frame 10.

[0024] Furthermore, the driving mechanism includes a screw 12 rotatably installed in the frame 10, the outer wall of the frame 10 is fixedly connected to a motor 11, and the output shaft of the motor 11 is fixedly connected to one end of the screw 12, and the slider 13 is sleeved on the corresponding screw 12 through a threaded hole.

[0025] When the bottom plate 9 is in stable contact with the ground, the two motors 11 are started, and the two sliders 13 can be driven to slide on the bottom plate 9 by the threaded cooperation between the screw rod 12 and the slider 13, thereby driving the frame 1 to slide relative to the bottom plate 9, thereby adjusting the position of the frame in the width direction of the frame 1. The structure is simple and the operation is stable.

[0026] Specific combination Figure 1 , Figure 2 On the basis of the previous embodiment, further, the top of the base plate 9 is fixedly connected with a slide rail 14, the bottom of the slider 13 is provided with a slide groove adapted to the slide rail 14, and the slide rail 14 passes through the slide groove, and the top of the slider 13 is fixedly connected with a plurality of guide rods 15, the outer wall of the guide rod 15 is slidably sleeved with a sleeve 16, and the sleeve 16 is fixedly connected to the frame 1.

[0027] Through the cooperation between the slide rail 14 and the slide groove, the slider 13 can be guided on the bottom plate 9, thereby ensuring the stability of the movement of the frame 1. Through the sliding cooperation between the guide rod 15 and the sleeve 16, the stability of the frame 1 when it is raised and lowered relative to the slider 13 can be improved, and at the same time, the radial force exerted on the first hydraulic cylinder 8 when the frame 1 is translated relative to the bottom plate 9 can be shared.

[0028] Specific combination Figure 1 , Figure 3 In one embodiment of the utility model, the tensioning mechanism includes a second hydraulic cylinder 17 fixedly installed on the inner side of the front end of the frame 1, and the push rod ends of the second hydraulic cylinder 17 are rotatably connected to the clamping block 18, and the top of the front end of the frame 1 is fixedly connected to the block 19, and the front ends of the frame 1 are fixedly connected to the third hydraulic cylinder 20, and the push rod ends of the third hydraulic cylinder 20 are connected to the steel cable 21 through the fork head. Two guide wheels 22 are installed at the bottom of the front end of the frame 1, and the steel cable 21 passes through the corresponding guide wheels 22.

[0029] After moving the frame 1 so that the stopper 19 and the clamping block 18 are respectively located on both sides of the flange 24, the second hydraulic cylinder 17 is started to drive the clamping block 18 to move toward the stopper 19 to clamp the flange 24 between the stopper 19 and the clamping block 18. After symmetrically installing two bolts 25 on the flange 24, the end of the steel cable 21 away from the third hydraulic cylinder 20 is sleeved on the bolt 25, and the third hydraulic cylinder 20 is started to tighten the steel cable 21, which can further ensure the stability of the connection between the frame 1 and the flange 24.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A new type of heat exchanger tube bundle extraction and installation machine, characterized by: The invention comprises a frame (1), a main crane (2) is installed on the frame (1), a hanging plate (3) is installed at the front end of the main crane (2) in a manner that it can be raised or lowered, a flippable top rod (4) is installed on the main crane (2), a plurality of hydraulic support trolleys (5) are slidably installed near the front end of the frame (1), a tensioning mechanism is installed at the front end of the frame (1), two support plates (6) are fixedly connected to the outer walls of both sides of the frame (1), a lifting hole (7) is provided on the support plate (6), a first hydraulic cylinder (8) is fixedly connected to the outer wall of the support plate (6), a sliding block (13) is fixedly connected to the push rod end of the first hydraulic cylinder (8), and two translation mechanisms are arranged below the frame (1), and each translation mechanism is connected to two corresponding sliding blocks (13).

2. According to claim 1, a novel heat exchanger tube bundle extraction and installation machine is characterized in that: The translation mechanism comprises a base plate (9), the top of the base plate (9) is fixedly connected to a frame (10), the slider (13) is located in the corresponding frame (10), and the slider (13) is slidably connected to the base plate (9), and a driving mechanism matching the slider (13) is installed on the frame (10).

3. A novel heat exchanger tube bundle extraction and installation machine according to claim 2, characterized in that: The driving mechanism comprises a screw (12) rotatably mounted in a frame (10); an outer wall of the frame (10) is fixedly connected to a motor (11); an output shaft of the motor (11) is fixedly connected to one end of the screw (12); and the slider (13) is sleeved on the corresponding screw (12) through a threaded hole.

4. The novel heat exchanger tube bundle extraction and installation machine according to claim 2 is characterized in that: The top of the base plate (9) is fixedly connected with a slide rail (14); the bottom of the slider (13) is provided with a slide groove matched with the slide rail (14), and the slide rail (14) passes through the slide groove; the top of the slider (13) is fixedly connected with a plurality of guide rods (15); the outer wall of the guide rod (15) is slidably sleeved with a sleeve (16), and the sleeve (16) is fixedly connected to the frame (1).

5. The novel heat exchanger tube bundle extraction and installation machine according to claim 1 is characterized in that: The tensioning mechanism comprises a second hydraulic cylinder (17) fixedly mounted on the inner side of the front end of the frame (1), the push rod ends of the second hydraulic cylinder (17) are rotatably connected to clamp blocks (18), the top of the front end of the frame (1) is fixedly connected to a stop block (19), both sides of the front end of the frame (1) are fixedly connected to third hydraulic cylinders (20), the push rod ends of the third hydraulic cylinder (20) are connected to steel cables (21) via forks, and two guide wheels (22) are mounted on the bottom of the front end of the frame (1), and the steel cables (21) pass through the corresponding guide wheels (22).

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