A kind of auxiliary tool for heat exchanger tube bundle

Abstract

The application discloses a kind of auxiliary tool for heat exchanger tube bundle, belong to heat exchanger technical field, fixed base plate, it is rectangular plate structure setting, for the support of entire tool, fixed base plate top symmetry is equipped with 2 being adjusted component drive movement's limiting component, and adjusting component is arranged in the hollow structure inside fixed seat, the fixed seat is arranged above fixed base plate, 2 the limiting component middle equidistantly is equipped with auxiliary moving assembly, it is used to the tube bundle of being penetrated to carry out auxiliary tube work, the upper portion of auxiliary moving assembly and limiting component.This is used for the auxiliary tool of heat exchanger tube bundle;The setting of limiting component upper adaptation mechanism, it can be flexibly adjusted according to the size of tube sheet work, so that the entire auxiliary tool can be adapted to the tube work of different sizes heat exchange tube bundle component, so as to ensure that the use range of entire auxiliary tool is wider.

Description

Technical Field

[0001] This application relates to the field of heat exchanger tube threading technology, and in particular to an auxiliary tooling for heat exchanger tube bundle threading. Background Technology

[0002] The tube bundle in a heat exchanger is the core component for heat transfer, primarily transferring heat from one fluid to another through the tubes within the bundle. Cold and hot fluids flow in the tube side and shell side, respectively. The fluid flowing through the tube side is called the tube-side fluid, and the fluid flowing through the shell side is called the shell-side fluid. They exchange heat through the tube walls. A crucial step in heat exchanger manufacturing is the insertion of the tube bundle. Currently, during heat exchanger assembly, the tube bundle typically needs to be inserted through the circular holes in the tube sheet and baffles. However, due to the large number of these holes, the traditional manual insertion process places a significant burden on workers. Furthermore, tube bundle tilting and insertion failures frequently occur during insertion. Therefore, auxiliary tooling is needed for the tube bundle insertion process.

[0003] Application No. 202322629075.3 discloses an auxiliary tooling for inserting heat exchanger tube bundles, comprising a rectangular limiting outer cylinder, and multiple limiting rods evenly distributed within the rectangular limiting outer cylinder and arranged along its length. Tube bundle components for inserting the heat exchanger tube bundle are fitted within the multiple limiting rods. The multiple limiting rods have identical structures, each including two parallel horizontal rods and two parallel vertical rods connected between the two horizontal rods. A square mounting cavity is formed by the horizontal and vertical rods, with its center coaxial with the center of the rectangular limiting outer cylinder. Limiting blocks are provided on the horizontal and vertical rods, and a sliding groove for engaging the limiting blocks is provided on the outer wall of the tube bundle component. This utility model has a simple structure and reasonable design, achieving tube bundle component limiting for easy insertion of the heat exchanger tube bundle, ensuring the straightness of the inserted heat exchanger tube bundle, and improving the efficiency of subsequent assembly with the shell and tube sheet.

[0004] However, the aforementioned auxiliary tooling, when assisting in the tube bundle insertion, only controls multiple limiting rods and limiting outer cylinders to achieve the clamping of multiple tube bundles and complete the auxiliary tube insertion work. However, the entire process still requires the assistance of personnel to insert the tubes. When the heat exchanger shell diameter is large and the tube bundles are heavy, it will increase the workload of the personnel. Summary of the Invention

[0005] The purpose of this invention is to provide an auxiliary tooling for inserting tube bundles in a heat exchanger, in order to solve the problem of the auxiliary tooling currently available on the market mentioned in the background art. When assisting in inserting tube bundles, the tooling only controls multiple limiting rods and limiting outer cylinders to achieve the clamping of multiple tube bundles and complete the assisted tube insertion work. However, the entire process still requires manual assistance in inserting the tubes. When the diameter of the heat exchanger shell is large and the tube bundles are heavy, it will increase the workload of the manual laborers.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an auxiliary tooling for inserting tube bundles into a heat exchanger, comprising a fixed base plate, which is arranged in a rectangular plate structure for supporting and placing the entire tooling. The fixed base plate has two symmetrically arranged limiting components at its top, driven to move by an adjusting component, which is located in a hollow structure inside a fixed base. The fixed base is positioned above the fixed base plate. An auxiliary moving component is equally spaced between the two limiting components for assisting in the insertion of the tube bundle. The area above the auxiliary moving component and the limiting components is used for placing the heat exchanger tube bundle assembly. The limiting component includes an adaptation mechanism and a lifting mechanism, and the adaptation mechanism is used for flexible adjustment according to the different sizes of the heat exchanger tube bundle assembly. The lifting mechanism is used to lift the heat exchange tube bundle assembly after the tube insertion is completed. The heat exchange tube bundle assembly includes a tube sheet and a partition plate. Two tube sheets are symmetrically arranged, and partition plates are evenly spaced at the middle position between them. The bottom of the partition plate is engaged with an auxiliary moving component. A reinforcing component is also provided on the outside of the partition plate. The reinforcing component and the partition plate are both located in the middle position between the moving frame and the fixed frame. The reinforcing component and the partition plate are made of the same material. The reinforcing component includes a push plate, a through groove, and a friction arc block. The push plate has through grooves that are evenly distributed and correspond to the circular holes on the tube sheet. The size of the through groove is larger than the size of the circular hole. Two friction arc blocks are symmetrically arranged protruding inside the through groove, and the outer wall of the protruding friction arc blocks is in contact with the middle of the circular hole.

[0007] Preferably, the adaptation mechanism includes a rotating mechanism and a placement limiting plate. The outer side of the placement limiting plate can rotate at different angles through the rotating mechanism, and the top of the placement limiting plate is arc-shaped. The placement limiting plate is set inside the reserved groove, and the reserved groove is set at the top of both sides of the connecting seat. A sliding sleeve is set at the bottom of the connecting seat to connect with the adjustment component. A rotating mechanism is set on the outside of the connecting seat to connect with the placement limiting plate.

[0008] Preferably, the rotating mechanism includes a rotating motor, a rotating gear, and a meshing gear. The outer side of the rotating gear meshes with the meshing gear, and the top end of the meshing gear is connected to the bottom of the placement limiting plate via a shaft. The outer side of the rotating gear is connected to the rotating motor.

[0009] Preferably, the lifting mechanism includes a lifting cylinder and a lifting plate, the top of the lifting cylinder is connected to the bottom of the lifting plate, and the lifting mechanism is located in the middle of the connecting seat.

[0010] Preferably, a moving component is provided at the bottom center of the auxiliary moving component, and the top of the moving component is connected to the bottom of the auxiliary moving component through a middle slider. Connecting sliders are also provided on both sides of the bottom of the auxiliary moving component for sliding limit operation. The auxiliary moving component includes a moving frame, a fixed frame, a moving plate, a fixed plate, and an auxiliary block. A fixed frame is provided on the outer side of the moving frame. A moving plate and a fixed plate are respectively provided at the bottom of the moving frame and the fixed frame. An auxiliary block is provided at the top of the moving frame, and the top of the auxiliary block is provided with a locking groove that engages with the push plate. The gap between the other side of the auxiliary block and the fixed frame is greater than zero. The bottom of the moving plate is moved by a pushing component, and the pushing component is located in a groove inside the middle slider. The bottom of the fixed plate is connected to the top of the middle slider.

[0011] Preferably, two adjustment components are symmetrically arranged inside the fixed base, and each component includes an adjustment motor and an adjustment bidirectional lead screw. The top end of the adjustment motor is coaxially connected to the adjustment bidirectional lead screw, and the outer side of the adjustment bidirectional lead screw is threadedly connected to the inner side of the sliding sleeve.

[0012] Preferably, the moving component includes a driving mechanism and an engagement mechanism. The driving mechanism is located outside the engagement mechanism and is used to control the movement of the engagement mechanism. An intermediate slider is provided at the top of the engagement mechanism and connected to the bottom of the auxiliary moving component. The driving mechanism includes a drive motor and a drive gear, and the top of the drive motor is coaxially connected to the drive gear.

[0013] Preferably, the meshing mechanism includes a meshing rack, a reset component, and a movable tooth block. The reset component and the movable tooth block are connected to each other on both sides of the meshing rack, and both the meshing rack and the movable tooth block mesh with the drive gear. The reset component includes two rectangular blocks, which are fixedly installed on the meshing rack and the movable tooth block, respectively. A fixing post is provided in the middle of the two rectangular blocks. One side of the fixing post is integrally installed with the rectangular block on the meshing rack, and the other side of the fixing post is slidably installed with the rectangular block on the movable tooth block. A reset spring is provided in the middle of the two rectangular blocks.

[0014] Preferably, the pushing assembly includes a slider and a pushing cylinder, the slider is disposed inside the slide groove and its outer side is connected to the pushing cylinder, and the top of the slider is connected to the bottom of the moving plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the auxiliary tooling for inserting tube bundles in heat exchangers;

[0016] An auxiliary moving component is provided, which can engage with the bottom of the partition. During tube insertion, the operator first engages all the tube bundles with the circular holes on the tube sheet, thereby engaging the top of the tube bundles with the outer partition. With the reinforcement component, the top of all the tube bundles is reinforced. Then, the auxiliary moving component is activated, which moves the top partition and the engaged tube bundles together. When the tube bundle moves to the position of another partition and the top passes through the upper circular hole, the reinforcement of the previous component is released, and the reinforcement component at the next partition position is activated. By repeating the above process, the tube insertion of all the tube bundles can be completed. In the whole process, only the initial tube insertion work requires the operator's assistance. Afterward, only the operator needs to observe. It is not necessary to insert each tube bundle throughout the entire process, making the operation convenient and labor-saving.

[0017] The limiting component is equipped with an adaptive mechanism that can be flexibly adjusted according to the different sizes of the tube sheet. Therefore, the entire auxiliary tooling can adapt to the tube insertion of heat exchanger tube bundles of different sizes, thus ensuring a wider range of applications for the entire auxiliary tooling.

[0018] Equipped with a lifting mechanism and a disassembly and installation mechanism between the entire reinforcing component and the auxiliary moving component, once the entire tube bundle is threaded through the tube, it is only necessary to separate the reinforcing component from the auxiliary moving component. Then, with the lifting mechanism in place, the entire assembled tube bundle component can be lifted, allowing it to be assembled and engaged with the external cylinder. This enables rapid separation from the tooling, thereby improving assembly efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the present invention from a bottom view;

[0021] Figure 3 This is an enlarged structural diagram of the limiting component of the present invention;

[0022] Figure 4 This is a schematic diagram of the main structure of the limiting component and the auxiliary moving component of the present invention;

[0023] Figure 5 This is a top view of the limiting component and the auxiliary moving component of the present invention;

[0024] Figure 6 This is a top view of the auxiliary moving component and the connection between the moving components of the present invention;

[0025] Figure 7 This is an enlarged structural diagram of the moving component of the present invention;

[0026] Figure 8 This is a partially enlarged structural diagram of the reset component of the present invention;

[0027] Figure 9 This is a schematic diagram of the engagement structure between the auxiliary moving component, the partition, and the reinforcing component of the present invention;

[0028] Figure 10 This is a partially enlarged structural diagram of the auxiliary moving component of the present invention;

[0029] Figure 11 This is an enlarged structural schematic diagram of the reinforcement component of the present invention;

[0030] Figure 12 This is a bottom view of the auxiliary moving component of the present invention;

[0031] Figure 13 This is a schematic diagram of the enlarged structure of the driving component of the present invention;

[0032] Figure 14 This is a partially enlarged structural diagram of the reinforcement component of the present invention.

[0033] In the diagram: 1. Fixed base plate; 2. Fixed seat; 3. Limiting assembly; 31. Sliding sleeve; 32. Connecting seat; 33. Reserved slot; 34. Rotating mechanism; 341. Rotary motor; 342. Rotary gear; 343. Meshing gear; 35. Placement of limiting plate; 36. Lifting mechanism; 361. Lifting cylinder; 362. Lifting plate; 4. Auxiliary moving assembly; 41. Moving frame; 42. Fixed frame; 43. Moving plate; 44. Fixed plate; 45. Auxiliary block; 5. Heat exchanger tube bundle assembly; 51. Tube sheet; 52. Baffle; 6. Adjusting assembly; 61. 62. Adjusting motor; 7. Adjusting bidirectional lead screw; 7. Moving assembly; 71. Drive mechanism; 711. Drive motor; 712. Drive gear; 72. Meshing mechanism; 721. Meshing rack; 722. Reset assembly; 7221. Rectangular block; 7222. Reset spring; 7223. Fixed column; 723. Movable toothed block; 8. Intermediate slider; 81. Slide groove; 9. Connecting slider; 10. Reinforcing assembly; 101. Push plate; 102. Through groove; 103. Friction arc block; 11. Push assembly; 111. Slider; 112. Push cylinder. Detailed Implementation

[0034] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0035] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0036] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0037] Please see Figure 1-14 This invention provides a technical solution: an auxiliary tooling for inserting tube bundles into a heat exchanger, comprising a fixed base plate 1, which is arranged in a rectangular plate structure for supporting and placing the entire tooling. The fixed base plate 1 has two symmetrically arranged limiting components 3 driven to move by adjusting components 6 at its top end. The adjusting components 6 are disposed in a hollow structure inside a fixed seat 2, which is located above the fixed base plate 1. An auxiliary moving component 4 is equally spaced between the two limiting components 3 for assisting in the insertion of the tube bundle. The area above the auxiliary moving component 4 and the limiting components 3 is used for placing the heat exchanger tube bundle assembly 5. 3 includes an adaptation mechanism and a lifting mechanism 36. The adaptation mechanism is used to flexibly adjust the heat exchange tube bundle assembly 5 according to different sizes. The lifting mechanism 36 is used to lift the heat exchange tube bundle assembly 5 after the tube insertion is completed. The heat exchange tube bundle assembly 5 includes a tube sheet 51 and a partition plate 52. Two tube sheets 51 are symmetrically arranged, and partition plates 52 are equally spaced in the middle of the two. The bottom of the partition plate 52 is engaged with the auxiliary moving component 4. A reinforcing component 10 is also provided on the outside of the partition plate 52. The reinforcing component 10 and the partition plate 52 are both located in the middle of the moving frame 41 and the fixed frame 42. The reinforcing component 10 and the partition plate 52 are made of the same material.

[0038] This application provides an auxiliary tooling for heat exchanger tube bundle insertion, comprising an auxiliary moving component 4 and a limiting component 3. Specifically, in use, the entire tooling is first placed in a suitable position under the action of the fixed base plate 1. Then, the heat exchanger tube bundle assembly 5 needs to be placed. During placement, according to the size of the heat exchanger tube bundle assembly 5, the two limiting components 3 are controlled by the adjusting component 6 to change position. After reaching the suitable position, the adapting mechanism is adjusted so that its size corresponds to the size of the tube sheet 51. Then, the tube sheet 51 is placed on top of the adapting mechanism. Afterward, according to the position of the auxiliary moving component 4, each partition 52 and the reinforcing component 10 are engaged with the auxiliary moving component 4. Then, the tube bundle insertion can be performed. During insertion, multiple tube bundles are first inserted through the tube sheet 51. The tube bundle passes through the round hole and then reaches the nearby partition 52 and reinforcement component 10. The tube bundle engages with the round hole above the partition 52 and is then fixed by the reinforcement component 10. At this time, the moving component 7 at the bottom of the partition 52 is activated, causing the partition 52, the reinforcement component 10, and the tube bundle engaged above it to move together. When it moves to the position of another partition 52, the tube bundle will directly pass through the round hole on the other partition 52 and be reinforced again by the reinforcement component 10. At this time, the moving component 7 at the bottom of the second partition 52 and the reinforcement component 10 is controlled to work again, so that the tube bundle can be moved and threaded through again. In this way, all the tube bundle threading work can be completed. In this application, the operator only needs to push the tube bundle to assist when threading the tube bundle between the tube bundle and the partition 52. The operator does not need to push the tube bundle continuously. The operation is convenient and labor-saving.

[0039] In this application, since the material and shape of each baffle 52 are the same as those of the reinforcing component 10, and the two constitute a flow baffle mechanism, and the adjacent flow baffle mechanisms are staggered vertically, the heat exchanger can force the fluid to flow through multiple baffles along a specified path when it is in use.

[0040] In this application, according to Figure 3-5 As shown, the adaptation mechanism includes a rotating mechanism 34 and a placement limiting plate 35. The outer side of the placement limiting plate 35 can rotate at different angles through the rotating mechanism 34. The top of the placement limiting plate 35 is arc-shaped. The placement limiting plate 35 is located inside the reserved groove 33. The reserved groove 33 is located at the top of both sides of the connecting seat 32. A sliding sleeve 31 is provided at the bottom of the connecting seat 32 and connected to the adjusting component 6. The rotating mechanism 34 is provided on the outside of the connecting seat 32 and connected to the placement limiting plate 35.

[0041] The rotating mechanism 34 includes a rotating motor 341, a rotating gear 342, and a meshing gear 343. The outer side of the rotating gear 342 meshes with the meshing gear 343, and the top of the meshing gear 343 is connected to the bottom of the placement limiting plate 35 via a shaft. The outer side of the rotating gear 342 is connected to the rotating motor 341.

[0042] Specifically, when the adaptation mechanism needs to be adjusted according to the different dimensions of the tube sheet 51, the rotary motor 341 needs to be controlled to work, so that it drives the rotary gear 342 at its top to rotate, which in turn causes the meshing gear 343 that meshes with it to rotate. In this way, the meshing gear 343 drives the placement limiting plate 35 connected to it on the same axis to change its angle. After reaching a suitable angle, the tube sheet 51 can be placed.

[0043] When the tube bundle is inserted and the tooling needs to be separated, then according to... Figure 3 As shown, the lifting mechanism 36 includes a lifting cylinder 361 and a lifting plate 362. The top of the lifting cylinder 361 is connected to the bottom of the lifting plate 362, and the lifting mechanism 36 is located in the middle of the connecting seat 32.

[0044] Specifically, simply activate the lifting cylinder 361, which will cause the lifting plate 362 at its top to move upward. This will push the entire heat exchange tube bundle assembly 5 to quickly separate from the adaptation mechanism and the auxiliary moving assembly 4, thus facilitating subsequent rapid assembly.

[0045] Furthermore, according to Figure 4 , Figure 5 , Figure 6 , Figure 9 , Figure 10 , Figure 11 and Figure 12As shown, a moving component 7 is provided at the bottom center of the auxiliary moving component 4, and the top of the moving component 7 is connected to the bottom of the auxiliary moving component 4 through a middle slider 8. Connecting sliders 9 are also provided on both sides of the bottom of the auxiliary moving component 4 for sliding limit operation. The auxiliary moving component 4 includes a moving frame 41, a fixed frame 42, a moving plate 43, a fixed plate 44, and an auxiliary block 45. The fixed frame 42 is provided on the outer side of the moving frame 41. The moving plate 43 and the fixed plate 44 are respectively provided at the bottom of the moving frame 41 and the fixed frame 42. The auxiliary block 45 is provided at the top of the moving frame 41, and the top of the auxiliary block 45 is provided with a locking groove that engages with the push plate 101. The gap between the other side of the auxiliary block 45 and the fixed frame 42 is greater than zero. The bottom of the moving plate 43 is moved by a pushing component 11, and the pushing component 11 is provided in a sliding groove 81 inside the middle slider 8. The bottom of the fixed plate 44 is connected to the top of the middle slider 8.

[0046] The reinforcement component 10 includes a push plate 101, a through groove 102, and a friction arc block 103. The push plate 101 has through grooves 102 that correspond to the circular holes on the tube plate 51, and the size of the through groove 102 is larger than the size of the circular hole. Two friction arc blocks 103 are symmetrically arranged protruding inside the through groove 102, and the outer wall of the protruding friction arc block 103 is in contact with the middle of the circular hole.

[0047] The pushing assembly 11 includes a slider 111 and a pushing cylinder 112. The slider 111 is disposed inside the slide groove 81 and its outer side is connected to the pushing cylinder 112. The top of the slider 111 is connected to the bottom of the moving plate 43.

[0048] In the placement of the baffle mechanism, firstly, the push cylinder 112 on the push assembly 11 is activated, causing the slider 111 to slide inside the slide groove 81. This causes the slider 111 to move the moving plate 43 and the moving frame 41, creating a gap between the moving frame 41 and the fixed frame 42. Then, the push plate 101 and the partition plate 52 on the reinforcing assembly 10 are engaged between them, ensuring that the through groove 102 on the push plate 101 corresponds to the circular hole on the partition plate 52. The bottom of the push plate 101 is engaged in the engaging groove at the top of the auxiliary block 45. The partition plate 52 is located on the other side of the push plate 101. Therefore, when the tube bundle passes through the circular hole on the partition plate 52, it first passes through the through groove 102 on the push plate 101. After completely passing through the partition plate 52, the push assembly 11 is activated, causing the moving frame 41 to move the push plate 101 towards the position of the partition plate 52. The friction arc block 103 inside the through groove 102 engages with the tube bundle and the round hole to fix the tube bundle. Therefore, when the moving component 7 controls the auxiliary moving component 4 to move, it can also drive the tube bundle, the push plate 101 and the auxiliary moving component 4 to move together. After moving to the position of the next partition 52, the auxiliary moving component 4 at the bottom of the previous partition 52 is controlled to separate. When separating, the moving frame 41 moves, which will drive the auxiliary block 45 to one side. When the auxiliary block 45 moves, the engaging groove at its top engages with the push plate 101, so that the push plate 101 does not fix the tube bundle. Then, the push plate 101 on the current partition 52 is controlled to fix the tube bundle. The auxiliary moving component 4 can be activated to move all the tube bundles through the tube again, thus completing the entire tube insertion work. And no tilting will occur during tube insertion.

[0049] In this application, the gap between the top of the auxiliary block 45 and the fixed frame 42 is greater than zero. Therefore, when the partition 52 and the push plate 101 are initially placed, the partition 52 is set at the top of the auxiliary block 45, and the bottom part is supported by the auxiliary block 45, while the bottom part is suspended, which facilitates the subsequent movement of the auxiliary plate 45.

[0050] Among them, according to Figure 4 and Figure 5 As shown, when the intermediate distance of the limiting component 3 is changed, two adjusting components 6 are symmetrically arranged inside the fixed base 2, and each component includes an adjusting motor 61 and an adjusting bidirectional lead screw 62. The top end of the adjusting motor 61 is coaxially connected to the adjusting bidirectional lead screw 62, and the outer side of the adjusting bidirectional lead screw 62 is threadedly connected to the inner side of the sliding sleeve 31.

[0051] Specifically, the adjusting motor 61 needs to be started, which drives the adjusting bidirectional lead screw 62 at its top to rotate. The adjusting bidirectional lead screw 62 is threadedly connected to the sliding sleeve 31, thereby causing the sliding sleeve 31 to move the connecting seat 32 at its top, thus achieving the effect of moving the adaptation mechanism and the lifting mechanism 36 on the connecting seat 32.

[0052] Among them, according to Figure 7 and Figure 8 As shown, the moving component 7 includes a drive mechanism 71 and a meshing mechanism 72. The drive mechanism 71 is located outside the meshing mechanism 72 and is used to control the movement of the meshing mechanism 72. An intermediate slider 8 is provided at the top of the meshing mechanism 72 and is connected to the bottom of the auxiliary moving component 4. The drive mechanism 71 includes a drive motor 711 and a drive gear 712, and the drive motor 711 is coaxially connected to the top of the drive gear 712.

[0053] The meshing mechanism 72 includes a meshing rack 721, a reset assembly 722, and a movable tooth block 723. The reset assembly 722 and the movable tooth block 723 are connected to each other on both sides of the meshing rack 721, and both the meshing rack 721 and the movable tooth block 723 mesh with the drive gear 712. The reset assembly 722 includes two rectangular blocks 7221, which are fixedly installed on the meshing rack 721 and the movable tooth block 723, respectively. A fixing post 7223 is provided in the middle of the two rectangular blocks 7221. One side of the fixing post 7223 is integrally installed with the rectangular block 7221 on the meshing rack 721, and the other side of the fixing post 7223 is slidably installed with the rectangular block 7221 on the movable tooth block 723. A reset spring 7222 is provided in the middle of the two rectangular blocks 7221.

[0054] When controlling the movement of the auxiliary moving component 4, the drive motor 711 needs to be started first, so that it drives the drive gear 712 at its top to rotate, thereby causing the drive gear 712 to mesh with the meshing rack 721, which in turn causes the meshing rack 721 to drive the middle slider 8 at its top to move, thus completing the movement of the auxiliary moving component 4.

[0055] In this application, both outer sides of the meshing rack 721 are connected to the movable tooth block 723 through the reset assembly 722. Therefore, when the drive mechanism 71 is not closed in time, the moving distance of the meshing rack 721 is fixed. Thus, when the operator does not close the drive mechanism 71 in time, it will not affect the entire tooling.

[0056] When the drive gear 712 meshes with the outer movable tooth block 723, the rectangular block 7221 on the movable tooth block 723 is reset under the action of the return spring 7222. As a result, the drive gear 712 continuously meshes with the movable tooth block 723, thus preventing the entire meshing mechanism 72 from continuously moving.

[0057] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0058] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. An auxiliary tool for heat exchanger tube bundle threading, comprising a fixed base plate (1) arranged in a rectangular plate structure for supporting and placing the entire tool, characterized in that, The top end of the fixed bottom plate (1) is symmetrically provided with two limiting assemblies (3) driven to move by adjusting assemblies (6), and the adjusting assemblies (6) are arranged in the hollow structure inside the fixed seat (2), the fixed seat (2) is arranged above the fixed bottom plate (1), the middle of the two limiting assemblies (3) is provided with an auxiliary moving assembly (4) at equal intervals, which is used for assisting the pipe bundle to pass through the pipe, the upper part of the auxiliary moving assembly (4) and the limiting assembly (3) is used for placing the heat exchange tube bundle assembly (5), the limiting assembly (3) comprises an adapting mechanism and a lifting mechanism (36), and the adapting mechanism is used for flexible adjustment according to the different sizes of the heat exchange tube bundle assembly (5), the lifting mechanism (36) is used for lifting the heat exchange tube bundle assembly (5) after the pipe passing is completed, the heat exchange tube bundle assembly (5) comprises a tube plate (51) and a partition plate (52), the tube plate (51) is symmetrically provided with two, and the middle position of the two is provided with the partition plate (52) at equal intervals, the bottom of the partition plate (52) is clamped between the auxiliary moving assembly (4), and the outer side of the partition plate (52) is provided with a reinforcing assembly (10), and the reinforcing assembly (10) and the partition plate (52) are arranged at the middle position of the moving frame (41) and the fixed frame (42), and the reinforcing assembly (10) and the partition plate (52) are made of the same material, the reinforcing assembly (10) and the partition plate (52) constitute a baffle mechanism, the reinforcing assembly (10) comprises a push plate (101), a through groove (102) and a friction arc block (103), the push plate (101) is uniformly distributed with the through groove (102) corresponding to the circular hole on the tube plate (51), and the size of the through groove (102) is larger than that of the circular hole, two friction arc blocks (103) are protrusively and symmetrically arranged in the through groove (102), and the outer wall of the protruding friction arc block (103) is attached to the middle of the circular hole; the adapting mechanism comprises a rotating mechanism (34) and a placing limiting plate (35), the outer side of the placing limiting plate (35) is rotated by the rotating mechanism (34), the top end of the placing limiting plate (35) is arranged in an arc structure, the placing limiting plate (35) is arranged in the reserved groove (33), the reserved groove (33) is arranged at the top of both sides of the connecting seat (32), the sliding sleeve (31) is arranged at the bottom of the connecting seat (32) and connected with the adjusting assembly (6), and the rotating mechanism (34) is arranged outside the connecting seat (32) and connected with the placing limiting plate (35); the rotating mechanism (34) comprises a rotating motor (341), a rotating gear (342) and a meshing gear (343), the outer side of the rotating gear (342) is meshed with the meshing gear (343), the top end of the meshing gear (343) is connected with the bottom of the placing limiting plate (35) through a shaft, and the outer side of the rotating gear (342) is connected with the rotating motor (341).

2. The auxiliary tooling for threading a tube bundle of a heat exchanger according to claim 1, wherein: The lifting mechanism (36) comprises a lifting cylinder (361) and a lifting plate (362), the top end of the lifting cylinder (361) is connected with the bottom of the lifting plate (362), and the lifting mechanism (36) is arranged at the middle position of the connecting seat (32).

3. The auxiliary tooling for threading a tube bundle of a heat exchanger of claim 1, wherein: The bottom center position of the auxiliary moving assembly (4) is provided with a moving assembly (7), the top end of the moving assembly (7) is connected with the bottom of the auxiliary moving assembly (4) through an intermediate sliding block (8), and the bottom of the auxiliary moving assembly (4) is also provided with a connecting sliding block (9) on both sides, which is used for sliding limiting work, the auxiliary moving assembly (4) comprises a moving frame (41), a fixed frame (42), a moving plate (43), a fixed plate (44) and an auxiliary block (45), the outer side of the moving frame (41) is provided with the fixed frame (42), the moving plate (43) and the fixed plate (44) are arranged at the bottom of the moving frame (41) and the fixed frame (42) respectively, the top end of the moving frame (41) is provided with the auxiliary block (45) at the upper position, the top end of the auxiliary block (45) is provided with a clamping groove matched with the push plate (101), the gap between the other side of the auxiliary block (45) and the fixed frame (42) is greater than zero, the bottom of the moving plate (43) is moved through a pushing assembly (11), and the pushing assembly (11) is arranged in a sliding groove (81) in the intermediate sliding block (8), and the bottom of the fixed plate (44) is connected with the top end of the intermediate sliding block (8).

4. The auxiliary tooling for threading a tube bundle of a heat exchanger of claim 1, wherein: The adjusting assembly (6) is symmetrically arranged in the fixed seat (2) and comprises an adjusting motor (61) and an adjusting bidirectional screw rod (62), the top end of the adjusting motor (61) is coaxially connected with the adjusting bidirectional screw rod (62), and the outer portion of the adjusting bidirectional screw rod (62) is in threaded connection with the inner side of the sliding sleeve (31).

5. The auxiliary tooling for threading a tube bundle of a heat exchanger of claim 1, wherein: The moving assembly (7) comprises a driving mechanism (71) and an engagement mechanism (72), the driving mechanism (71) is arranged on the outer side of the engagement mechanism (72) and is used for controlling the movement of the engagement mechanism (72), the top end of the engagement mechanism (72) is provided with an intermediate sliding block (8) connected with the bottom of the auxiliary moving assembly (4), and the driving mechanism (71) comprises a driving motor (711) and a driving gear (712), and the top end of the driving motor (711) is coaxially connected with the driving gear (712).

6. The auxiliary tooling for threading a bundle of heat exchanger tubes according to claim 5, wherein: The engaging mechanism (72) comprises an engaging rack (721), a reset assembly (722) and a movable tooth block (723), reset assembly (722) and movable tooth block (723) are connected on both sides of the engaging rack (721), and the engaging rack (721) and the movable tooth block (723) are engaged with the driving gear (712), the reset assembly (722) comprises two rectangular blocks (7221), which are respectively fixedly installed on the engaging rack (721) and the movable tooth block (723), a fixed column (7223) is arranged in the middle of the two rectangular blocks (7221), one side of the fixed column (7223) is integrally installed with the rectangular block (7221) on the engaging rack (721), the other side of the fixed column (7223) is slidably installed with the rectangular block (7221) on the movable tooth block (723), reset springs (7222) are arranged in the middle of the two rectangular blocks (7221).

7. The auxiliary tooling for threading a bundle of heat exchanger tubes according to claim 3, wherein: The pushing assembly (11) comprises a sliding block (111) and a pushing cylinder (112), the sliding block (111) is arranged in the inside of the sliding groove (81), and the outer side of the sliding block (111) is connected with the pushing cylinder (112), and the top end of the sliding block (111) is connected with the bottom of the moving plate (43).

Images