A high-precision tube bundle mounting tool

Abstract

The utility model provides a kind of high-precision installation pipe bundle's tool, including fixed ring, several support plates are provided on the fixed ring, the back of the support plate is fixedly connected with support block, tool uses, one end of support plate is matched in the end of pipe bundle, support block is matched on the circumferential surface of pipe bundle, the middle part of the support plate is equipped with through hole, and sliding block is slidably arranged in through hole, third bolt is inserted and arranged on the sliding block, and third bolt extends to the flange of pipe bundle installation shell, nut is threadedly connected on the third bolt, and nut abuts flange. The utility model is used for the installation of pipe bundle under limited space, and is suitable for the installation of pipe bundle of different diameters.

Description

Technical Field

[0001] This utility model relates to the field of tooling technology, and in particular to a tooling for high-precision installation of tube bundles. Background Technology

[0002] A heat exchanger is a device that transfers some of the heat from a hot fluid to a cold fluid; it is also called a heat exchanger. Heat exchangers play an important role in chemical, petroleum, power, food, and many other industrial production processes. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators, and reboilers, etc.

[0003] Tube bundles are key components of heat exchangers in petrochemical plants. They are piping systems used to transfer heat within the heat exchanger, composed of numerous slender metal tubes. These tubes possess excellent thermal conductivity and corrosion resistance, achieving cooling or heating of substances through heat exchange. Their performance directly affects the safe and stable operation of the plant. Rapid disassembly and precise reassembly technologies ensure accurate repositioning of tube bundles after maintenance, avoiding leaks and other problems caused by improper installation, reducing operational risks, and minimizing the possibility of secondary maintenance due to installation errors. In conventional replacement scenarios, tube bundles can be easily replaced and installed using equipment such as overhead cranes or gantry cranes. However, in space-constrained environments, where only tools like hand-operated hoists are available, achieving high-precision installation of tube bundles presents challenges. Summary of the Invention

[0004] To address the aforementioned problems, this utility model discloses a high-precision installation fixture for tube bundles, comprising a fixing ring with several support plates mounted on it. Support blocks are fixedly connected to the back of each support plate. In use, one end of each support plate engages with the end of the tube bundle, and the support blocks engage with the circumferential surface of the tube bundle. The multiple support plates provide support and limit the movement of the tube bundle, ensuring its subsequent installation.

[0005] The support plate has a through hole in its center, and a sliding block is slidably disposed in the through hole. A third bolt is inserted through the sliding block and extends to the flange of the tube bundle mounting housing. A nut is threaded onto the third bolt, and the nut abuts against the flange. That is, the fixing ring is fixedly connected to the tube bundle mounting housing by the third bolt and nut, and at the same time, under the limiting effect, it ensures that the tube bundle can be installed inside the housing in accordance with the requirements.

[0006] Preferably, the fixing ring has several first through holes, and the support plate has several second through holes. A first bolt is inserted through the first and second through holes to fix the support plate to the fixing ring. Depending on the diameter of the tube bundle, the second through holes at different positions are controlled to mate with the first through holes, thus clamping and fixing the tube bundle in a straight line. This fixing scheme can be used for the installation of tube bundles of different diameters, and the tooling has a wider range of applications.

[0007] Preferably, a second bolt is threaded onto the support plate, one end of which is rotatably fitted onto the sliding block, and the other end is radially inserted with a rotating handle. First, the support plate is fixed according to the diameter of the tube bundle, and the support plate and fixing ring are fitted onto one end of the tube bundle. Then, the position of the sliding block is adjusted according to the position of the flange using the rotating handle and the second bolt. Finally, a third bolt is inserted to limit the movement, achieving high-precision installation of the tube bundle in the final position.

[0008] Preferably, one end of the third bolt is fixedly connected to a cylindrical section, and the cylindrical section transitionally fits into a through hole in the sliding block. The cylindrical section ensures that there is no radial clearance between the third bolt and the sliding block, thus ensuring installation accuracy.

[0009] Preferably, a threaded sleeve is fixedly connected to the end of the nut. The inner diameter of the threaded sleeve is larger than the diameter of the third bolt, and the outer diameter of the threaded sleeve transitions into the through hole on the flange. Similarly, the threaded sleeve ensures that there is no radial movement gap between the third bolt and the flange through hole, thus improving accuracy.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1. It is equipped with a fixing ring and a support block, which can be clamped and fixed to the end of the tube bundle. Then, it is used in conjunction with the insertion and limiting of the third bolt. At the same time, the two ends of the third bolt are radially limited by the cylindrical section and the threaded sleeve, respectively, ensuring that the tube bundle can be installed with high precision in a limited space even when only using the pushing tool.

[0012] 2. The support block and fixing ring can be disassembled and their positions changed, and the position of the sliding block can be adjusted. The tooling is suitable for a wider range of tube diameters. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0014] Figure 2 This is a three-dimensional schematic diagram of the support plate of this utility model;

[0015] Figure 3 This is a schematic diagram of the back of the support plate of this utility model;

[0016] Figure 4 This is a schematic diagram illustrating the application of this utility model.

[0017] List of reference numerals in the attached diagram:

[0018] 1. Fixing ring; 2. First through hole; 3. Support plate; 4. Sliding block; 5. Second through hole; 6. First bolt; 7. Second bolt; 8. Rotary handle; 9. Third bolt; 10. Nut; 11. Screw sleeve; 12. Support block; 13. Cylindrical section. Detailed Implementation

[0019] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. It should be noted that the terms "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the accompanying drawings, and the terms "inner" and "outer" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0020] like Figures 1 to 4 As shown, a high-precision fixture for installing tube bundles includes a fixing ring 1, which is an annular component. Several support plates 3 are mounted on the fixing ring 1, distributed at approximately equal angles, but their positions can be adjusted according to actual needs. Support blocks 12 are fixedly connected to the back of each support plate 3. In use, one end of each support plate 3 engages with the end of the tube bundle, restricting its axial movement. The support blocks 12 engage with the circumferential surface of the tube bundle, clamping and limiting its radial movement. By further positioning and pushing this fixing structure, the tube bundle can be installed, and the radial position of the support blocks 12 within the fixing ring 1 can be controlled to meet the clamping and limiting requirements of tube bundles with different diameters.

[0021] A through hole is provided in the middle of the support plate 3, and a sliding block 4 is slidably disposed in the through hole. The position of the sliding block 4 on the through hole can be set. A third bolt 9 is inserted through the sliding block 4 and extends to the flange of the tube bundle mounting housing. A nut 10 is threaded on the third bolt 9 and the nut 10 abuts against the flange. That is, the third bolt 9 and the nut 10 limit the movement and ensure the coaxial accuracy between the tube bundle and the housing.

[0022] Furthermore, in specific use, first, according to the diameter of the tube bundle, control the position of the support plate 3 on the fixing ring 1, and clamp and limit the end of the tube bundle. Then, use a hoisting tool, such as a hand chain hoist, to lift the tube bundle to the same height as the shell. Next, use a pushing tool, such as a hand chain hoist, hydraulic cylinder, or pneumatic cylinder, to send the tube bundle into the shell. Note that a support structure should be set at one end of the tube bundle located in the shell. When the installation is almost completed, it is necessary to further control the posture of the tube bundle. At this time, the third bolt 9 is used in the through hole of the flange to ensure the positional accuracy of the tube bundle. Finally, use the pushing tool again, or continuously tighten the third bolt 9 and nut 10 to install the tube bundle in place.

[0023] The fixing ring 1 has several first through holes 2, and the support plate 3 has several second through holes 5. After the first through holes 2 and the second through holes 5 are engaged, a first bolt 6 is inserted to fix the support plate 3 to the fixing ring 1. That is, for tube bundles of different diameters, the positions of the second through holes 5 engaged with the first through holes 2 are also different.

[0024] Furthermore, if the diameter of the tube bundle is larger than the diameter of the fixing ring 1, the support plate 3 can be installed in reverse to meet the usage requirements and avoid interference from the fixing of the first bolt 6. In this case, the first bolt 6 is directly threaded onto the fixing ring 1, and its end is at least flush with the end of the fixing ring 1.

[0025] A second bolt 7 is threaded onto the support plate 3. One end of the second bolt 7 is rotatably fitted onto the sliding block 4, and the other end is radially inserted with a handle 8. By rotating the handle 8, the position of the sliding block 4 can be changed via the second bolt 7, facilitating the insertion of the third bolt 9 into the flange through hole on the housing.

[0026] One end of the third bolt 9 is fixedly connected to a cylindrical section 13, and the cylindrical section 13 is fitted into the through hole on the sliding block 4. The cylindrical section 13, through the transition fit, ensures that the third bolt 9 will not move radially, thus guaranteeing installation accuracy.

[0027] A threaded sleeve 11 is fixedly connected to the end of the nut 10. The inner diameter of the threaded sleeve 11 is larger than the diameter of the third bolt 9 to prevent direct contact between the thread and the threaded sleeve 11. The outer diameter of the threaded sleeve 11 transitions to fit the through hole on the flange. Similarly, the use of the threaded sleeve 11 also prevents radial movement of the third bolt 9.

[0028] The technical means disclosed in this utility model are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A tooling for high-precision installation of tube bundles, characterized in that, Includes a fixing ring (1), on which a plurality of support plates (3) are provided, and a support block (12) is fixedly connected to the back of the support plate (3). When the tooling is used, one end of the support plate (3) is fitted to the end of the tube bundle, and the support block (12) is fitted to the circumferential surface of the tube bundle. The support plate (3) has a through hole in the middle, and a sliding block (4) is slidably disposed in the through hole. A third bolt (9) is inserted through the sliding block (4), and the third bolt (9) extends to the flange of the tube bundle mounting housing. A nut (10) is threaded onto the third bolt (9), and the nut (10) abuts against the flange.

2. The tooling for high-precision installation of tube bundles according to claim 1, characterized in that: The fixing ring (1) is provided with a number of first through holes (2), and the support plate (3) is provided with a number of second through holes (5). After the first through holes (2) and the second through holes (5) are engaged, a first bolt (6) is inserted to realize the support plate (3) being fixedly connected to the fixing ring (1).

3. The tooling for high-precision installation of tube bundles according to claim 1, characterized in that: The support plate (3) is threaded with a second bolt (7), one end of the second bolt (7) is rotatably fitted with a sliding block (4), and the other end is radially inserted with a handle (8).

4. The tooling for high-precision installation of tube bundles according to claim 1, characterized in that: One end of the third bolt (9) is fixedly connected to a cylindrical section (13), and the cylindrical section (13) is fitted into the through hole on the sliding block (4).

5. The tooling for high-precision installation of tube bundles according to claim 1, characterized in that: The end of the nut (10) is fixedly connected to a threaded sleeve (11). The inner diameter of the threaded sleeve (11) is larger than the diameter of the third bolt (9). The outer diameter of the threaded sleeve (11) transitions to the through hole on the flange.

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