Vertical lifting device for cylinder

Abstract

The utility model relates to petrochemical equipment manufacturing technical field, concretely relates to a vertical lifting tool for cylinder, including bottom support, rigging and snap ring, bottom support includes first support arm and second support arm who are arranged mutually cross, both ends of first support arm are adapted to resist and top cylinder inner wall surface, and the second support arm is equipped with the positioning groove who opens mouth upwards, so that the cylinder bottom side wall is embedded and is held by the upward horizontal, the snap ring includes the first clasp and the second clasp who can open and shut, and the first clasp and the second clasp are locked to the upper part of cylinder tightly, the first clasp and the second clasp are equipped with the guide rope hole who penetrates up and down, rigging fixedly connected second support arm, and extend to the upper of cylinder through the guide rope hole upwards. Compared with prior art, after the water connection box is lifted, the tool can ensure that the water connection box always keeps the vertical state, and the stable vertical state provides great convenience for riveting workers to carry out the matching operation, and effectively improves the accuracy and efficiency of operation.

Description

Technical Field

[0001] This utility model relates to the field of petrochemical equipment manufacturing technology, specifically to a vertical lifting fixture for cylinders. Background Technology

[0002] The cracking furnace is a key device in an ethylene plant. After the raw material is cracked at high temperature in the furnace tubes, it enters the quench heat exchanger for rapid cooling to prevent secondary reactions and recover heat energy to generate high-pressure steam.

[0003] The flat round tube-type quench heat exchanger consists of multiple heat exchange tubes, each composed of an inner tube and an outer tube. The inner tube is concentrically inserted inside the outer tube. The inner tube carries the cracked gas, while the annular gap between the two tubes carries the cooling medium. The bottom ends of the inner and outer tubes are connected to the lower flat round tube, and the top ends are connected to the upper flat round tube. The inner tube passes completely through the flat round tube, while the outer tube does not pass through the flat round tube but is connected to the interior of the flat round tube. The two ends of the upper flat round tube are connected to the upper header, and the two ends of the lower flat round tube are connected to the lower header.

[0004] During operation, the cracked gas enters from the upper gas header, passes through each inner pipe to reach the lower gas header, and the cooling water enters from the lower header and flows through the lower flat round pipe into the annular space between the inner and outer pipes. After exchanging heat with the cracked gas, it becomes a water vapor mixture (saturated steam) and flows into the upper flat round pipe and then to the upper header.

[0005] A similar structure is the pyrolysis gas quench heat exchanger disclosed in Chinese patent document CN2164537Y, which belongs to the category of heat exchange devices. It consists of an upper head, a heat exchange tube bundle, and a lower head. Its main feature is that the lower head comprises multiple guide tubes of varying sizes and lengths, housed within an outer shell and connected by supporting ribs. Flanges are installed at both ends of the outer shell. This design solves the problem of coking in the heat exchange tube bundle, ensuring the smooth operation of ethylene production. Besides its use in modifying existing pyrolysis gas quench heat exchanger structures, it can also be applied to the novel and improved designs of various other heat exchangers, achieving energy efficiency and high performance.

[0006] For example, Chinese patent document CN203053270U discloses a multi-inlet quench heat exchanger for preventing scale corrosion. It mainly consists of an oblong lower head, a lower tube box, a lower header, a lower elliptical manifold, an outer tube, an inner tube, an upper elliptical manifold, an upper header, and an upper tube box. When the lower elliptical manifold is welded to the lower tube box, and the upper elliptical manifold is welded to the upper tube box, the axes of both the upper and lower elliptical manifolds are parallel to the minor axis of the oblong lower head. This multi-inlet quench heat exchanger is particularly suitable for use in ethylene cracking furnaces, effectively preventing scale corrosion at the root of the inner tubes.

[0007] The welding of the water header assembly for the flat round tube quencher requires vertical hoisting using a bridge crane. However, the lack of suitable lifting points on the water header itself makes securing the lifting equipment difficult. Previous methods involved spot-welding temporary lifting lugs to the surface of the base material to assist in hoisting. After assembly, personnel had to climb to a height to cut and remove the lugs and grind the base material surface. This method has three drawbacks: First, it creates multiple redundant processes of "spot welding lifting lugs - hoisting - cutting - grinding," which is cumbersome and adds approximately ten minutes to the operation time for a single water header assembly. Second, spot welding, cutting, and grinding damage the base material surface. Third, high-altitude cutting operations involve risks associated with working at height, and the quality of the temporary lifting lug spot welding also directly introduces potential lifting risks. Summary of the Invention

[0008] In view of the above-mentioned technical problems, the present invention provides a convenient, safe and reliable vertical lifting fixture for cylinders. The fixture does not require welding on the workpiece and can ensure the verticality of the water manifold after lifting.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A vertical lifting fixture for a cylinder is provided, including a base support, rigging and a shackle. The base support includes a first support arm and a second support arm arranged in a crisscross pattern. The two ends of the first support arm are adapted to abut against the inner wall of the cylinder. The second support arm is provided with an upward-facing positioning groove so that the bottom side wall of the cylinder can be inserted and horizontally supported upward.

[0011] The retaining ring includes a first retaining ring and a second retaining ring that can be opened and closed. The first retaining ring and the second retaining ring are locked together to clamp the upper part of the cylinder. The first retaining ring and the second retaining ring are provided with guide rope holes that pass through from top to bottom.

[0012] The rigging is fixedly connected to the second support arm and extends upward through the guide rope hole to the top of the cylinder.

[0013] Preferably, the first support arm and the second support arm are an integrated structure or are assembled by welding together.

[0014] Preferably, the first support arm and the second support arm are arranged in a cross shape, with the intersection point being at their centers, and the length of the second support arm is greater than the length of the first support arm.

[0015] Preferably, the two positioning grooves are respectively disposed near the end of the second support arm, so that the two positioning grooves correspond to the side walls of the cylinder that are relatively symmetrical about the center.

[0016] Preferably, the two ends of the second support arm are hinged with lifting lugs, and the rigging is connected to the lifting lugs.

[0017] Preferably, the two guide holes are longitudinally aligned with the corresponding lifting lugs.

[0018] Preferably, the first clamp and the second clamp are semi-circular, with one end of each clamp hinged to the other, and the other end of each clamp locked together by bolts.

[0019] Preferably, the first clamp and the second clamp are respectively radially through-holes with mounting holes, and a guide seat is bolted to the outside of the mounting holes, with the hole on the outside of the guide seat serving as the guide rope hole.

[0020] Preferably, the locking ends of the first clamp and the second clamp extend outwards integrally with a locking seat, and the locking seat is fitted with a bolt.

[0021] Preferably, the rigging is made of steel rope.

[0022] The beneficial effects of this utility model are:

[0023] This utility model provides a vertical lifting fixture for cylinders, which, compared with existing technologies, offers the following advantages:

[0024] 1. Simplified process: The existing technology has eliminated multiple redundant processes such as "spot welding of lifting lugs - hoisting - cutting of lifting lugs - grinding", which greatly shortens the operation time, especially for a single water manifold assembly, thus improving work efficiency.

[0025] 2. Protects the base material: No need to spot weld, cut or grind on the surface of the base material, avoiding damage to the surface of the base material and ensuring the quality of the base material.

[0026] 3. Reduced risks: Eliminates the risks of working at heights caused by high-altitude cutting operations, as well as the potential lifting risks caused by the quality of temporary lifting lug spot welding, thus improving operational safety.

[0027] 4. Easy to operate: The tooling base and rigging combination can be tightly locked into the bottom pipe opening of the water manifold. The fixing ring adopts a movable structure design, which can be quickly and easily put into the water manifold. The operation is simple and convenient.

[0028] 5. Ensure verticality: The steel wire rope buckle structure on the fixed shackle ensures that the water manifold remains vertical after hoisting, providing convenience for the riveting team and improving the accuracy and efficiency of the operation. Attached Figure Description

[0029] 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.

[0030] Figure 1 This is a structural schematic diagram of a vertical lifting fixture for a cylinder, as shown in the embodiment.

[0031] Figure 2 This is a schematic diagram illustrating the combination of a vertical lifting fixture for a cylinder and the cylinder being lifted, as described in one embodiment.

[0032] Figure 3 This is a schematic diagram of the first clamp in the embodiment.

[0033] Figure label:

[0034] Base support 1, first support arm 11, second support arm 12, positioning groove 13, lifting lug 14;

[0035] Rigging 2;

[0036] 3. Snap ring; 31. First clamp; 32. Second clamp; 33. Rope guide hole; 34. Mounting hole; 35. Lock seat; 36. Guide seat;

[0037] 4. Cylinder body. Detailed Implementation

[0038] 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.

[0039] In this embodiment, a vertical lifting fixture for a cylinder is provided, wherein the bottom of the cylinder being lifted is open, such as... Figures 1 to 3 As shown, the fixture consists of three main parts: a base support 1, a rigging 2, and a shackle 3. The base support 1 supports the cylinder 4 upwards, the shackle 3 holds the upper part of the cylinder 4 tightly, and the rigging 2 connects the base support 1 and the shackle 3. An external crane is used to vertically lift the cylinder 4. The fixture is described in detail below:

[0040] In this embodiment, the base support 1 includes a first support arm 11 and a second support arm 12 arranged in a cross shape, with the intersection point at their centers. The length of the second support arm 12 is greater than the length of the first support arm 11. Each end of the second support arm 12 is provided with an upward-facing positioning groove 13. The positioning groove 13 is used to insert the bottom sidewall of the cylinder 4 and support it horizontally upward. The length of the first support arm 11 is adapted to the inner diameter of the cylinder 4, that is, the two ends of the first support arm 11 are laterally adapted to abut against the inner wall surface of the cylinder 4.

[0041] Specifically, the first support arm 11 and the second support arm 12 are integrated structures (integrated casting or cut from sheet metal) or are assembled by welding together.

[0042] In this embodiment, two positioning grooves 13 are respectively disposed near the end of the second support arm 12, so that the two positioning grooves 13 correspond to the side walls of the cylinder 4 that are relatively symmetrical about the center.

[0043] In this embodiment, the retaining ring 3 includes a first retaining ring 31 and a second retaining ring 32 that can be opened and closed. The first retaining ring 31 and the second retaining ring 32 are semi-circular, with one end of each ring hinged to the other, and the other end of each ring locked together by bolts. It can be seen that after the first retaining ring 31 and the second retaining ring 32 are engaged, they form a circle around the outer wall of the interference fit cylinder 4, thereby realizing the mutual locking of the first retaining ring 31 and the second retaining ring 32 to tighten the upper part of the cylinder 4.

[0044] In this embodiment, the first clamp 31 and the second clamp 32 are provided with vertically penetrating guide holes 33. Lifting lugs 14 are hinged to both ends of the second support arm 12, and the two guide holes 33 are longitudinally aligned with the corresponding lifting lugs 14. The rigging 2 is a steel rope, and two rigging 2 are fixedly connected to the corresponding lifting lugs 14 on the second support arm 12, extending upwards through the guide holes 33 to the top of the cylinder 4.

[0045] Specifically, the first clamp 31 and the second clamp 32 each have a radially penetrating mounting hole 34. A guide seat 36 is bolted to the outside of the mounting hole 34, and the hole on the outside of the guide seat 36 serves as the rope guide hole 33. The advantage is that it is easy to assemble and maintain, and can be adapted to rigging of different thicknesses by replacing guide seats of different specifications.

[0046] Specifically, the locking ends of the first clamp 31 and the second clamp 32 extend outwards integrally with a locking seat 35, and the locking seat 35 is fitted with a bolt.

[0047] The base support 1 and rigging 2 work together to securely fasten at the bottom pipe opening of the water header, serving as the main load-bearing component to support the weight of the water header during lifting. The retaining ring 3 features a movable structure design, allowing it to be quickly and easily slipped onto the outside of the water header. A wire rope clip structure is installed on the retaining ring 3, ensuring the wire rope is firmly fixed to it. This fixture ensures the water header remains vertical after lifting, providing significant convenience for riveting operations and effectively improving the accuracy and efficiency of the work.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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. A vertical lifting fixture for a cylinder, characterized in that: Includes a base support (1), rigging (2) and a snap ring (3). The base support (1) includes a first support arm (11) and a second support arm (12) arranged in a crisscross pattern. The two ends of the first support arm (11) are adapted to abut against the inner wall of the cylinder (4). The second support arm (12) is provided with an upward-facing positioning groove (13) so that the bottom side wall of the cylinder (4) can be inserted and horizontally supported upward. The retaining ring (3) includes a first retaining ring (31) and a second retaining ring (32) that can be opened and closed. The first retaining ring (31) and the second retaining ring (32) are locked together to clamp the upper part of the cylinder (4). The first retaining ring (31) and the second retaining ring (32) are provided with a guide rope hole (33) that runs through from top to bottom. The rigging (2) is fixedly connected to the second support arm (12) and extends upward through the guide rope hole (33) to the top of the cylinder (4).

2. The cylindrical vertical lifting fixture according to claim 1, characterized in that: The first support arm (11) and the second support arm (12) are an integrated structure or are assembled by welding together.

3. A vertical lifting fixture for a cylinder according to claim 1 or 2, characterized in that: The first support arm (11) and the second support arm (12) are arranged in a cross shape, and the intersection is at the center of each other. The length of the second support arm (12) is greater than the length of the first support arm (11).

4. The cylindrical vertical lifting fixture according to claim 3, characterized in that: The two positioning grooves (13) are respectively located near the end of the second support arm (12) so that the two positioning grooves (13) correspond to the side walls of the cylinder (4) that are relatively symmetrical about the center.

5. The cylindrical vertical lifting fixture according to claim 1, characterized in that: The two ends of the second support arm (12) are hinged with lugs (14), and the rigging (2) is connected to the lugs (14).

6. The cylindrical vertical lifting fixture according to claim 5, characterized in that: The two guide holes (33) are respectively aligned longitudinally with the corresponding lifting lugs (14).

7. The cylindrical vertical lifting fixture according to claim 1, characterized in that: The first clamp (31) and the second clamp (32) are semi-circular, with one end of each clamp hinged to the other, and the other end of each clamp locked together by bolts.

8. The cylindrical vertical lifting fixture according to claim 7, characterized in that: The first clamp (31) and the second clamp (32) are respectively radially through mounting holes (34). A guide seat (36) is bolted to the outside of the mounting hole (34), and the hole on the outside of the guide seat (36) serves as the guide rope hole (33).

9. The cylindrical vertical lifting fixture according to claim 7, characterized in that: The locking ends of the first clamp (31) and the second clamp (32) extend outwards integrally with a locking seat (35), and the locking seat (35) is provided with a bolt.

10. The cylindrical vertical lifting fixture according to claim 1, characterized in that: The rigging (2) is a steel rope.

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