An assembly structure for facilitating distance arrangement of baffle plates

Abstract

The utility model relates to petrochemical equipment technical field, concretely relates to an assembly structure convenient for baffle fixed-distance arrangement, including tube sheet, first stud, a plurality of stop nuts, fixed-distance subassembly and baffle, fixed-distance subassembly includes fixed-distance pipe and second stud, and fixed-distance pipe is equipped with the connecting screw hole close to rear port position, and second stud is fixed in fixed-distance pipe and extends from the front port, first stud rear end fixed connection tube sheet, and first stud front end passes through first baffle and is screwed into stop nut and is screwed into the connecting screw hole of first group fixed-distance subassembly, and the ladder of stop nut and first stud jointly lock first baffle, and the second stud of each group fixed-distance subassembly passes through corresponding baffle, is screwed into stop nut and is screwed into the connecting screw hole of next group fixed-distance subassembly, and thus will each group fixed-distance subassembly and baffle be fixed in turn, compared with prior art, simple operation, easy to assemble, strong universality, more suitable for the fixed-distance pipe of larger diameter, saves internal large diameter pull rod, saves material.

Description

Technical Field

[0001] This utility model relates to the field of petrochemical equipment technology, specifically to the field of pressure vessel manufacturing, and more specifically to an assembly structure that facilitates the fixed-distance arrangement of baffles. Background Technology

[0002] Tie rods are crucial components within the internal structure of heat exchangers. In existing technologies, standard tie rods are used in conjunction with spacer tubes to fix the baffles. One specific function is to fix the radial position of the baffles, reducing vibration and scratching damage to the heat exchange tubes caused by fluid scouring. Another specific function is to fix the axial spacing of the baffles, ensuring efficient heat exchange. Simultaneously, the tie rods and spacer tubes work together to reinforce the overall rigidity of the tube bundle. Especially in environments with significant vibration, the tightness of the tie rods directly affects the service life of the heat exchanger. Therefore, developing a tie rod structure that offers excellent fixation and ease of assembly is essential.

[0003] The applicant previously developed segmented tie rods, such as the heat exchanger with a stable segmented tie rod assembly disclosed in Chinese patent document CN112944997A, which includes a shell, heat exchange tubes, a front tube box, a rear tube box, a tube sheet, tie rods, and multiple baffles. The tie rods include multiple tie rod segments and thickened stop nuts. Each tie rod segment has an external thread at its end. The threaded connection of the first tie rod segment is to the tube sheet. The ends of adjacent tie rod segments are connected to each other by screwing in the same thickened stop nut. The baffles have tie rod holes that match the outer diameter of the tie rods. One side of the baffle abuts against the end face of the thickened stop nut. The outer side of the tie rod segment is also provided with a limiting member for pressing against the other side of the baffle. The rear end of the last tie rod segment is screwed with a locking stop nut. The locking stop nut and the limiting member together clamp the last baffle. Each tie rod segment is independently tightened to ensure that the baffle plate does not tilt and the clamping force transmission fails; during maintenance, a loose tie rod segment can be retightened to continuously ensure the stability of the tie rod.

[0004] Further research revealed that this structure can further improve operational convenience and reliability. Therefore, this application proposes an assembly structure that facilitates the fixed-distance arrangement of baffles. Summary of the Invention

[0005] In view of the above-mentioned technical problems existing in the prior art, the present invention provides an assembly structure that facilitates the fixed-distance arrangement of baffles.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An assembly structure is provided that facilitates the fixed-distance arrangement of baffles, including a tube sheet, a first stud, multiple stop nuts, multiple sets of fixed-distance components, and multiple baffles;

[0008] Each set of distance-fixing components includes a distance-fixing tube and a second stud. The distance-fixing tube has a connecting screw hole near the rear port. The second stud is fixed inside the distance-fixing tube and extends out from the front port.

[0009] The rear end of the first stud is fixedly connected to the tube sheet. The front end of the first stud passes through the first baffle plate and is screwed into the stop nut and then into the connecting screw hole of the first set of spacers. This allows the stop nut and the step of the first stud to lock the first baffle plate together and fix the first set of spacers.

[0010] The second stud of each set of spacing components passes through the corresponding baffle plate, is screwed into the stop nut, and is screwed into the connecting screw hole of the next set of spacing components. The front end of the spacing tube and the stop nut together lock the corresponding baffle plate, thus fixing each set of spacing components and baffle plates in sequence.

[0011] Specifically, the first stud is a double-ended stud, and the tube sheet has a threaded groove for the rear end of the double-ended stud to be screwed in.

[0012] Specifically, the rear end of the spacer tube is pressed against the front side of the corresponding baffle.

[0013] Specifically, a shaped nut is fixed inside the spacer tube, and its screw hole serves as the connecting screw hole.

[0014] Specifically, the periphery of the irregular nut is welded and fixed to the inner wall of the spacer tube.

[0015] Specifically, a support plate is fixed inside the spacer tube, and the second stud is fixed to the support plate.

[0016] Specifically, the periphery of the support plate is welded and fixed to the inner wall of the spacer tube.

[0017] Specifically, the support plate has a limiting hole for the second stud to pass through, and the second stud is welded and fixed to the side wall of the limiting hole.

[0018] Specifically, the first stud, the spacer tube, and the second stud are arranged coaxially.

[0019] Specifically, the stop nut is spot-welded to the baffle plate.

[0020] The beneficial effects of this utility model are:

[0021] This invention provides an assembly structure for facilitating the fixed-distance arrangement of baffles. Compared with existing technologies, it offers a reliable assembly structure with advantages such as simple operation, easy assembly, and strong versatility. This assembly structure can complete the assembly of the tube bundle skeleton under the confined conditions inside the container shell, effectively controlling the assembly sequence and dimensional deviations of the tube bundle; it solves the technical difficulties in assembling the tube bundle skeleton inside the shell. This structure is more suitable for fixed-distance tubes with larger diameters, thus saving internal large-diameter tie rods and conserving materials. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings. However, the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of an assembly structure for facilitating the fixed-distance arrangement of baffles in one embodiment.

[0024] Figure 2 for Figure 1 A schematic diagram showing the disassembled parts.

[0025] Figure 3 This is a schematic diagram of a single set of distance-fixing components in the embodiment.

[0026] Figure 4 This is a schematic diagram of the assembly structure in the embodiment during the assembly process.

[0027] Figure label:

[0028] Tube sheet 1, threaded groove 11;

[0029] First stud 2, step 21;

[0030] Stop nut 3;

[0031] Distance assembly 4, distance tube 41, second stud 42, special shaped nut 43, connecting screw hole 431, support plate 44, limiting hole 441;

[0032] 5. Baffle plate. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] This embodiment provides an assembly structure that facilitates the fixed-distance arrangement of baffles, such as... Figures 1 to 4 As shown, it includes a tube sheet 1, a first stud 2, multiple stop nuts 3, multiple sets of spacing components 4, and multiple baffles 5.

[0035] Each set of distance-fixing components 4 includes a distance-fixing tube 41 and a second stud 42. The distance-fixing tube 41 has a connecting screw hole 431 near the rear port. The second stud 42 is fixed inside the distance-fixing tube 41 and extends out from the front port.

[0036] Specifically, a shaped nut 43 is fixed inside the spacer tube 41, with its threaded hole serving as the connecting threaded hole 431. The periphery of the shaped nut 43 is welded and fixed to the inner wall of the spacer tube 41. A support plate 44 is fixed inside the spacer tube 41, and a second stud 42 is fixed to the support plate 44. Specifically, the periphery of the support plate 44 is welded and fixed to the inner wall of the spacer tube 41. The support plate 44 has a limiting hole 441 for the second stud to pass through, and the second stud is welded and fixed to the side wall of the limiting hole 441.

[0037] In this embodiment, the first stud 2 is a double-ended stud, and the tube sheet 1 has a threaded groove 11 for the rear end of the double-ended stud to be screwed in. The threaded groove 11 is a blind hole and does not penetrate the tube sheet 1.

[0038] During assembly, the rear end of the first stud 2 is screwed into the threaded groove 11 of the tube sheet 1, making the first stud 2 perpendicular to the tube sheet 1 and fixed. Then, the front end of the first stud 2 is passed through the first baffle 5 and screwed into the stop nut 3, so that the stop nut 3 and the step 21 of the first stud 2 together lock the first baffle 5. The front end of the first stud 2 is then screwed into the connecting screw hole 431 of the first set of spacing components 4, thus fixing the first set of spacing components 4. Then, the second stud 42 of the first set of spacing components 4 passes through the next baffle 5, is screwed into the stop nut 3, and is screwed into the connecting screw hole 431 of the second set of spacing components 4. In this way, the front end of the spacing tube 41 of the first set of spacing components 4 and the stop nut 3 together lock the second baffle 5, and the rear end of the spacing tube 41 abuts against the front side of the corresponding baffle 5. Similarly, after the second stud 42 of the second set of spacing components 4 passes through the third baffle plate 5, the stop nut 3 is tightened and then inserted into the connecting screw hole 431 of the next set of spacing components 4, and so on, until the stop nut 3 locks the last baffle plate 5, thus fixing each set of spacing components 4 and baffle plate 5 in sequence.

[0039] In this embodiment, the first stud, the spacer tube 41, and the second stud 42 are arranged coaxially, resulting in a compact structural layout.

[0040] In practice, after screwing in the stop nut 3, the stop nut 3 is spot-welded to the baffle plate 5, making the assembled structure more stable and stronger.

[0041] In the description of this utility model, it is obvious that the described embodiments are only a part of the embodiments of this utility model, and not all of them. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0042] Therefore, the above detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0043] In the description of this utility model, it should be noted that the terms "middle," "upper," "lower," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

Claims

1. An assembly structure that facilitates the fixed-distance arrangement of baffles, characterized in that: It includes a tube sheet (1), a first stud (2), multiple stop nuts (3), multiple sets of spacing components (4), and multiple baffles (5); Each set of distance-fixing components (4) includes a distance-fixing tube (41) and a second stud (42). The distance-fixing tube (41) has a connecting screw hole (431) near the rear port. The second stud (42) is fixed inside the distance-fixing tube (41) and extends out from the front port. The rear end of the first stud (2) is fixedly connected to the tube sheet (1). The front end of the first stud (2) passes through the first baffle plate (5) and is screwed into the stop nut (3) and then screwed into the connecting screw hole (431) of the first set of distance components (4), so that the stop nut (3) and the step (21) of the first stud (2) lock the first baffle plate (5) together and fix the first set of distance components (4). The second stud (42) of each set of distance-fixing components (4) passes through the corresponding baffle (5), screws into the stop nut (3), and screws into the connecting screw hole (431) of the next set of distance-fixing components (4). The front end of the distance-fixing tube (41) and the stop nut (3) lock the corresponding baffle (5) together, thus fixing each set of distance-fixing components (4) and baffle (5) in sequence.

2. The assembly structure for facilitating the fixed-distance arrangement of baffles according to claim 1, characterized in that: The first stud (2) is a double-ended stud, and the tube sheet (1) has a threaded groove (11) for the rear end of the double-ended stud to be screwed in.

3. The assembly structure for facilitating the fixed-distance arrangement of baffles according to claim 1, characterized in that: The rear end of the spacer tube (41) abuts against the front side of the corresponding baffle plate (5).

4. The assembly structure for facilitating the fixed-distance arrangement of baffles according to claim 1, characterized in that: A special-shaped nut (43) is fixed inside the spacer tube (41), and its screw hole serves as the connecting screw hole (431).

5. The assembly structure for facilitating the fixed-distance arrangement of baffles according to claim 4, characterized in that: The periphery of the irregular nut (43) is welded and fixed to the inner wall of the spacer tube (41).

6. The assembly structure for facilitating the fixed-distance arrangement of baffles according to claim 1, characterized in that: A support plate (44) is fixed inside the spacer tube (41), and a second stud (42) is fixed to the support plate (44).

7. The assembly structure for facilitating the fixed-distance arrangement of baffles according to claim 6, characterized in that: The periphery of the support plate (44) is welded and fixed to the inner wall of the spacer tube (41).

8. The assembly structure for facilitating the fixed-distance arrangement of baffles according to claim 7, characterized in that: The support plate (44) has a limiting hole (441) through which the second stud (42) passes, and the second stud (42) is welded and fixed to the side wall of the limiting hole (441).

9. The assembly structure for facilitating the fixed-distance arrangement of baffles according to claim 1, characterized in that: The first stud (2), the spacer tube (41), and the second stud (42) are arranged coaxially.

10. The assembly structure for facilitating the fixed-distance arrangement of baffles according to claim 1, characterized in that: The stop nut (3) is spot welded to the baffle plate (5).

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