Hoisting device for external heat collector tube bundle of heavy oil catalytic cracking device
By designing a lifting device with rectangular frame base and horizontal support, the problem of lack of support points and unstable center of gravity in the hoisting of the external heat extractor tube bundle is solved, and the stable fixation and safe lifting of the tube bundle are achieved, which improves the safety and reliability of construction. .
Patent Information
- Application Number
- CN202421231288.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-31
AI Technical Summary
The existing external heat collector tube bundle lifting technology has problems such as lack of support points, narrow lifting space, and unstable center of gravity, resulting in inconvenience in lifting.
A lifting device including a rectangular frame base, frame column, horizontal support and support support is designed. By bolting and reinforced oblique braces, the tube bundle is fixed at four stress points, and the center of gravity is adjusted to ensure the safety of lifting.
The stable fixation and safe lifting of the external heat withdrawer tube bundle are realized, which solves the problem of inconvenience in lifting and improves the safety and reliability of construction.
Smart Images
Figure CN222312485U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of external heat exchanger tube bundle hoisting, and in particular relates to an external heat exchanger tube bundle hoisting device for a heavy oil catalytic cracking device. Background Art
[0002] A new heavy oil catalytic cracking unit was built in a refinery. It was necessary to hang an external heat exchanger in the east, west and south directions below the cone section of the regenerator. The regenerator and three external heat exchangers were arranged as a whole in the steel structure frame of the two devices. The external heat exchanger consists of a shell and a tube bundle, and the weight of each part exceeds 100 tons. After the external heat exchanger is manufactured, it is usually transported to the site by sea and land, and then decomposed into a shell and a tube bundle on site. First, the shell of the external heat exchanger is installed and welded, and then the furnace is built at the weld part and the furnace is baked as a whole, and then the tube bundle is hoisted and cored back into place. At present, the installation process of the external heat exchanger is to use a pulley group and a winch lifting system or a steel strand hydraulic jack lifting system to hoist the shell and the tube bundle. The basic idea is to set up three lifting systems on the upper part of the external heat exchanger, transport the shell and the tube bundle horizontally to the bottom of the installation point, and then use the lifting system to turn over and lift them into place.
[0003] There are three key problems that are difficult to solve in the existing installation process. First, the upper lifting system has no support points or lifting points, and welding of temporary lifting lugs is not allowed based on equipment requirements. Second, the lifting system must be turned over and lifted, but it must be directly below the installation point, and the surrounding area below is usually an existing super-large concrete frame, and the lifting space is narrow, making the turning operation very difficult. Third, the center of gravity of the tube bundle is above the lifting point, and other auxiliary measures need to be taken to improve stability. It can be seen that it is very inconvenient to lift the external heat exchanger tube bundle with existing equipment. Utility Model Content
[0004] The utility model aims to provide a heavy oil catalytic cracking device external heat exchanger tube bundle hoisting device to solve the problem of inconvenient external heat exchanger tube bundle hoisting in the prior art.
[0005] The technical solution adopted by the utility model is as follows:
[0006] A heavy oil catalytic cracking unit external heat exchanger tube bundle lifting device comprises a rectangular frame base, the frame base is provided with an external heat exchanger tube bundle, four frame columns are installed correspondingly at the four corners of the frame base, the frame columns comprise two left columns located at the left short side of the frame base and two right columns located at the right short side of the frame base, a plurality of frame cross beams are arranged between the two left columns, and a plurality of frame cross beams are arranged between the two right columns, a lifting ear is arranged at the top of the frame column, a steel wire rope is arranged on the lifting ear, four supporting supports are arranged in the frame base, and the four supporting supports are distributed in a circular uniform array, the lower flange of the external heat exchanger tube bundle abuts against the top of the supporting support, the left column and the right column are both connected to horizontal supports, the horizontal support is connected to the upper flange of the external heat exchanger tube bundle, and the height difference between the lifting ear and the center of gravity of the external heat exchanger tube bundle is greater than 1 meter.
[0007] Furthermore, the horizontal supports on the two left columns are connected to the left side of the upper flange of the external heat exchanger tube bundle by bolts, and the horizontal supports on the two left columns are symmetrically arranged relative to the center line of the left short side of the frame base. The horizontal supports on the two right columns are connected to the right side of the upper flange of the external heat exchanger tube bundle by bolts, and the horizontal supports on the two right columns are symmetrically arranged relative to the center line of the right short side of the frame base.
[0008] Furthermore, a reinforcing diagonal brace is provided between the frame column and the frame base.
[0009] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:
[0010] 1. In the utility model, the horizontal support arranged on the frame column is rigidly connected to the bolt holes of the upper flange of the external heat exchanger tube bundle through bolts, and the external heat exchanger tube bundle is fixed on a plane through four force points. Since the lower flange of the external heat exchanger tube bundle is a protruding part compared with the entire equipment, four support supports distributed in a circular array are designed at the bottom by utilizing the gravity of the external heat exchanger tube bundle equipment itself, which are used to support the weight of the external heat exchanger tube bundle equipment and prevent it from sliding horizontally. The height difference between the lifting lug and the center of gravity of the external heat exchanger tube bundle is greater than 1 meter, which ensures that the geometric center of the lifting point of the external heat exchanger tube bundle equipment when it is vertically hoisted is above its center of gravity, ensuring the safety of hoisting, and since the center of gravity line of the external heat exchanger tube bundle equipment is on the inner side of the vertical line of the upper cylinder of the regenerator, by making the frame base into a rectangle, adjusting the center of gravity line of the external heat exchanger to extend to the outer side of the vertical line of the upper cylinder of the regenerator, the safety of hoisting is further ensured.
[0011] Through the above two fixed positions and the extension of the center of gravity, the external heat exchanger tube bundle equipment can be firmly fixed on the hoisting device during hoisting, which is convenient for hoisting construction and is safe and reliable, effectively solving the problem of inconvenient hoisting of the existing external heat exchanger tube bundle. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present utility model and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work, including:
[0013] Figure 1 It is a structural schematic diagram of the utility model;
[0014] Markings in the figure: 1-frame base, 2-external heat exchanger tube bundle, 21-lower flange, 22-upper flange, 3-frame column, 4-frame beam, 5-lifting ear, 6-wire rope, 7-support bearing, 8-horizontal support, 9-reinforcement diagonal brace. DETAILED DESCRIPTION
[0015] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0016] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0017] It should be noted that reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0018] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use. They are only simplified descriptions for the convenience of describing the present utility model, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance.
[0019] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0020] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0021] A heavy oil catalytic cracking unit external heat exchanger tube bundle lifting device comprises a rectangular frame base, the frame base is provided with an external heat exchanger tube bundle, four frame columns are installed correspondingly at the four corners of the frame base, the frame columns comprise two left columns located at the left short side of the frame base and two right columns located at the right short side of the frame base, a plurality of frame cross beams are arranged between the two left columns, and a plurality of frame cross beams are arranged between the two right columns, a lifting ear is arranged at the top of the frame column, a steel wire rope is arranged on the lifting ear, four supporting supports are arranged in the frame base, and the four supporting supports are distributed in a circular uniform array, the lower flange of the external heat exchanger tube bundle abuts against the top of the supporting support, the left column and the right column are both connected to horizontal supports, the horizontal support is connected to the upper flange of the external heat exchanger tube bundle, and the height difference between the lifting ear and the center of gravity of the external heat exchanger tube bundle is greater than 1 meter.
[0022] Furthermore, the horizontal supports on the two left columns are connected to the left side of the upper flange of the external heat exchanger tube bundle by bolts, and the horizontal supports on the two left columns are symmetrically arranged relative to the center line of the left short side of the frame base. The horizontal supports on the two right columns are connected to the right side of the upper flange of the external heat exchanger tube bundle by bolts, and the horizontal supports on the two right columns are symmetrically arranged relative to the center line of the right short side of the frame base.
[0023] Furthermore, a reinforcing diagonal brace is provided between the frame column and the frame base.
[0024] During the implementation of the utility model, the horizontal support arranged on the frame column is rigidly connected to the bolt holes of the upper flange of the external heat exchanger tube bundle through bolts, and the external heat exchanger tube bundle is fixed on a plane through four force points. Since the lower flange of the external heat exchanger tube bundle is a protruding part compared with the entire equipment, four support supports distributed in a circular array are designed at the bottom by utilizing the gravity of the external heat exchanger tube bundle equipment itself, which are used to support the weight of the external heat exchanger tube bundle equipment and prevent it from sliding horizontally. The height difference between the lifting lug and the center of gravity of the external heat exchanger tube bundle is greater than 1 meter, which ensures that the geometric center of the lifting point of the external heat exchanger tube bundle equipment when it is vertically hoisted is above its center of gravity, ensuring the safety of hoisting, and since the center of gravity line of the external heat exchanger tube bundle equipment is on the inner side of the vertical line of the upper cylinder of the regenerator, by making the frame base into a rectangle, the center of gravity line of the external heat exchanger is adjusted to extend to the outer side of the vertical line of the upper cylinder of the regenerator, which further ensures the safety of hoisting.
[0025] Through the above two fixed positions and the extension of the center of gravity, the external heat exchanger tube bundle equipment can be firmly fixed on the hoisting device during hoisting, which is convenient for hoisting construction and is safe and reliable, effectively solving the problem of inconvenient hoisting of the existing external heat exchanger tube bundle.
[0026] Example 1
[0027] A heavy oil catalytic cracking unit external heat exchanger tube bundle lifting device comprises a rectangular frame base, the frame base is provided with an external heat exchanger tube bundle, four frame columns are installed correspondingly at the four corners of the frame base, the frame columns comprise two left columns located at the left short side of the frame base and two right columns located at the right short side of the frame base, a plurality of frame cross beams are arranged between the two left columns, and a plurality of frame cross beams are arranged between the two right columns, a lifting ear is arranged at the top of the frame column, a steel wire rope is arranged on the lifting ear, four supporting supports are arranged in the frame base, and the four supporting supports are distributed in a circular uniform array, the lower flange of the external heat exchanger tube bundle abuts against the top of the supporting support, the left column and the right column are both connected to horizontal supports, the horizontal support is connected to the upper flange of the external heat exchanger tube bundle, and the height difference between the lifting ear and the center of gravity of the external heat exchanger tube bundle is greater than 1 meter.
[0028] Example 2
[0029] On the basis of Example 1, the horizontal supports on the two left columns are connected to the left side of the upper flange of the external heat exchanger tube bundle by bolts, and the horizontal supports on the two left columns are symmetrically arranged relative to the midline of the left short side of the frame base, and the horizontal supports on the two right columns are connected to the right side of the upper flange of the external heat exchanger tube bundle by bolts, and the horizontal supports on the two right columns are symmetrically arranged relative to the midline of the right short side of the frame base.
[0030] Example 3
[0031] Based on the above embodiment, a reinforcing diagonal brace is provided between the frame column and the frame base.
[0032] The above is the embodiment of the utility model. The above is the preferred embodiment of the utility model. If the preferred implementation methods in each preferred embodiment are not obviously self-contradictory or based on a preferred implementation method, each preferred implementation method can be arbitrarily superimposed and used in combination. The embodiments and specific parameters in the embodiments are only for the purpose of clearly describing the verification process of the utility model, and are not used to limit the patent protection scope of the utility model. The patent protection scope of the utility model is still subject to its claims. All equivalent structural changes made by using the description and drawings of the utility model should be included in the protection scope of the utility model.
Claims
1. A heavy oil catalytic cracking unit external heat exchanger tube bundle hoisting device, characterized in that: The invention comprises a rectangular frame base (1), on which an external heat exchanger tube bundle (2) is arranged, and four frame columns (3) are installed at the four corners of the frame base (1) respectively, and the frame columns (3) comprise two left columns located on the left short side of the frame base (1) and two right columns located on the right short side of the frame base (1), a plurality of frame cross beams (4) are arranged between the two left columns, a plurality of frame cross beams (4) are arranged between the two right columns, and a lifting lug (5) is arranged on the top of the frame column (3) A steel wire rope (6) is arranged on the lifting lug (5), four support brackets (7) are arranged in the frame base (1), and the four support brackets (7) are evenly distributed in a circular array. The lower flange (21) of the external heat exchanger tube bundle (2) is in contact with the top of the support bracket (7), and the left column and the right column are both connected to a horizontal support (8), and the horizontal support (8) is connected to the upper flange (22) of the external heat exchanger tube bundle (2). The height difference between the lifting lug (5) and the center of gravity of the external heat exchanger tube bundle (2) is greater than 1 meter.
2. A heavy oil catalytic cracking unit external heat exchanger tube bundle hoisting device according to claim 1, characterized in that: The horizontal supports (8) on the two left columns are connected to the left side of the upper flange (22) of the external heat exchanger tube bundle (2) by bolts, and the horizontal supports (8) on the two left columns are symmetrically arranged relative to the left short side center line of the frame base (1). The horizontal supports (8) on the two right columns are connected to the right side of the upper flange (22) of the external heat exchanger tube bundle (2) by bolts, and the horizontal supports (8) on the two right columns are symmetrically arranged relative to the right short side center line of the frame base (1).
3. A heavy oil catalytic cracking unit external heat exchanger tube bundle hoisting device according to claim 1 or 2, characterized in that: A reinforcing diagonal brace (9) is provided between the frame column (3) and the frame base (1).