Baffle plate for hoisting heat exchanger tube bundle

Abstract

The utility model relates to a chemical equipment maintenance auxiliary device, in particular to a baffle plate for hoisting a heat exchanger tube bundle, which comprises a baffle plate body and a hoisting mechanism formed on the baffle plate body, and a short circuit prevention assembly is arranged on the hoisting mechanism positioned on one side of the baffle plate body; a through hole is formed in the position, corresponding to the lifting mechanism, of the baffle plate body, the lifting mechanism is matched with the through hole of the baffle plate body to form a lifting lug of the baffle plate, and then the whole heat exchanger tube bundle is lifted through the lifting lug of the baffle plate. The tube bundle can be prevented from damaging a slideway or a heat exchange tube in the hoisting process of the tube bundle in a traditional hoisting mode, leakage or difficulty in extraction and installation is avoided, and construction is extremely convenient and safe.

Description

Technical Field

[0001] The utility model relates to a chemical equipment maintenance auxiliary device, in particular to a baffle plate used for hanging a heat exchanger tube bundle, and belongs to the field of chemical equipment maintenance. Background Art

[0002] At present, the baffles of the tube bundles of large threaded locking ring heat exchangers (DN1700mm-DN1800mm and above) do not have lifting ears on the upper part. Usually, two lifting straps are used to hold the slide under the tube bundle for lifting, transportation or extraction. It is easy to deform the slide at the bottom. Since the slide of the large tube bundle has a great influence on the extraction process and the sealing effect on both sides of the tube sheet, the verticality tolerance requirements between the slide and the tube sheet are particularly high during manufacturing. The deformation caused by lifting directly affects these factors, so it is very important to change the lifting method. Utility Model Content

[0003] In view of the above-mentioned technical problems, in order to overcome the technical defect of scratching the heat exchange tubes and slideways caused by the traditional sling binding lifting, the utility model provides a baffle for lifting the heat exchanger tube bundle, which effectively solves the problem and avoids leakage or difficulty in extraction, and the construction is extremely convenient and safe.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a baffle for hanging a tube bundle of a heat exchanger, comprising a baffle body and a hanging mechanism formed on the baffle body, and an anti-short circuit component is arranged on the hanging mechanism located on one side of the baffle body;

[0005] Furthermore, a through hole is provided on the baffle body at a position corresponding to the lifting mechanism, and the lifting mechanism cooperates with the through hole of the baffle body to form a lifting ear of the baffle, and then the entire heat exchanger tube bundle is lifted through the lifting ear of the baffle;

[0006] Furthermore, according to the specific length of the entire heat exchanger tube bundle, the number of the baffles is set to be multiple and evenly arranged in the heat exchanger tube bundle; the baffle spacing is generally determined by the designer based on the process conditions;

[0007] Furthermore, each baffle with a lifting lug is used as a lifting unit of a heat exchanger tube bundle, and at least two lifting units are set on each tube bundle according to the center of gravity of the tube bundle; the principle followed here is that not every baffle is loaded, as long as the load is sufficient, the fewer the better, and two are preferably set for easy lifting; when the number of lifting units of the heat exchanger tube bundle is too large, auxiliary tooling such as a hand chain hoist or a balance beam is required;

[0008] Furthermore, the size and position of the through holes on the baffles where the lifting lugs are provided are determined by calculating the mass of the tube bundle; the position of the holes should also comply with the relevant standard requirements for plate-type lifting lugs;

[0009] Generally, as a preference, the through holes on the baffle are opened at an appropriate distance below the highest point of the baffle.

[0010] The lifting mechanism on the baffle body comprises: a first reinforcement ring and a second reinforcement ring arranged on both sides of the baffle body, the two reinforcement rings have the same structure and specification and are symmetrically arranged with the baffle body as the center;

[0011] Furthermore, each of the reinforcing rings is a hollow annular body, a through-hole structure is formed at the hollow position of the annular body, the through-hole position of the reinforcing ring corresponds to the through-hole position of the baffle body, and the two reinforcing rings are fixedly connected to the outer surfaces of both sides of the baffle body by welding;

[0012] Furthermore, the design of the reinforcing ring should be calculated according to the load it carries, and its thickness should generally not be less than the thickness of the baffle body, and its outer diameter should be consistent with or slightly lower than the top edge of the baffle body;

[0013] Furthermore, the inner diameter of the reinforcing ring is formed on the surface of the hollow through hole of the reinforcing ring, and the space of the inner diameter is used to cooperate with the shaft pin for installing the elevator;

[0014] The above-mentioned elevator uses an Omega elevator, which is a universal lifting device, also called a shackle; the elevator includes two parts: an Omega ring and an axle pin;

[0015] Furthermore, the inner diameter of the reinforcing ring is designed according to the rated shaft pin size and a margin is added on the basis of the shaft pin size. The size should not be too large otherwise it will affect the strength of the lifting lug;

[0016] Furthermore, the reinforcement ring is made of a material having the same tensile strength as or slightly higher than that of the baffle body.

[0017] The anti-short circuit component is arranged on one side of the second reinforcement ring. The main function of the anti-short circuit component is to prevent the short circuit of the fluid in the shell side of the heat exchanger. The anti-short circuit component includes: a cover plate and a plurality of screws; a plurality of screw holes are evenly arranged on the outer side of the second reinforcement ring, and the cover plate is fastened to the second reinforcement ring by screws;

[0018] Furthermore, the outer diameter of the cover plate is the same as or slightly smaller than the outer diameter of the second reinforcement ring; the cover plate does not bear pressure, so the thickness should not be too thick; the cover plate is removed during hoisting and installed before the tube bundle is reinstalled into the shell;

[0019] Furthermore, the screws are made of stainless steel, and the preferred number is three and they are evenly distributed, not too many; the diameter of the screws should not be too large, otherwise it will affect the strength of the second reinforcement ring.

[0020] Taking the arrangement of a baffle with a lifting ear in a heat exchanger tube bundle as an example, an adjacent baffle is respectively arranged on both sides of the baffle with the lifting ear, and the baffle with the lifting ear is located in the middle, which is called the middle baffle; three parallel longitudinal anti-vortex baffles are arranged at the top of the tube bundle and in the vertical direction of the three baffles, and the middle longitudinal anti-vortex baffle is a disconnected area near the lifting ear of the middle baffle, which divides the middle longitudinal anti-vortex baffle into two split sections, and the two split sections are respectively welded with a transverse arc short plate at the end near the baffle lifting ear, and the two ends of the transverse arc short plate are respectively connected to the longitudinal anti-vortex baffles on both sides;

[0021] The curvature of the transverse arc-shaped short plate is consistent with the curvature of the outer wall of the heat exchanger tube bundle;

[0022] The purpose of setting the disconnection area of ​​the middle longitudinal anti-vortex baffle is to allow the middle longitudinal anti-vortex baffle to avoid the position of the middle deflector ear to prevent conflict.

[0023] The beneficial effects of adopting the above structure are: a baffle with lifting ears is provided to realize the lifting of the heat exchanger tube bundle; it can prevent the tube bundle that exists in the traditional lifting method from damaging the slideway or the heat exchange tube during the lifting process, avoid leakage or difficulty in extraction, and the construction is extremely convenient and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the baffle of the utility model.

[0025] Figure 2 for Figure 1 Side view of.

[0026] Figure 3 The utility model is a schematic diagram of the assembly of the baffle in the heat exchanger tube bundle.

[0027] In the figure, 1, the baffle body, 2, the first reinforcement ring, 3, the second reinforcement ring, 4, the cover plate, 5, the screws, 6, the adjacent baffles, 7, the middle baffle, 8, the middle longitudinal anti-vortex baffle, 9, the disconnection area, 10, the transverse short plate with arc, 11, the longitudinal anti-vortex baffles on both sides. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0029] like Figure 1 A baffle for hanging a heat exchanger tube bundle shown in the figure comprises a baffle body 1 and a hanging mechanism formed on the baffle body 1, and an anti-short circuit component is arranged on the hanging mechanism located on one side of the baffle body 1;

[0030] The baffle body 1 is provided with a through hole at a position corresponding to the lifting mechanism, and the lifting mechanism cooperates with the through hole of the baffle body 1 to form a lifting lug of the baffle, and then the entire heat exchanger tube bundle is lifted through the lifting lug of the baffle;

[0031] According to the specific length of the entire heat exchanger tube bundle, the number of the baffles is set to be multiple and evenly arranged in the heat exchanger tube bundle, and the distance between each two adjacent baffles is set to 500mm;

[0032] Each baffle with a lifting lug is used as a lifting unit of a heat exchanger tube bundle. Two lifting units are provided on each tube bundle according to the center of gravity of the tube bundle, which is convenient for lifting. As another embodiment of the utility model, when the number of lifting units of the heat exchanger tube bundle is too large, auxiliary tooling such as a hand chain hoist or a balance beam is required;

[0033] The through hole on the baffle plate of the lifting ear is arranged, and the through hole is opened at an appropriate distance below the highest point of the baffle plate.

[0034] The lifting mechanism on the baffle body 1 includes: a first reinforcement ring 2 and a second reinforcement ring 3 arranged on both sides of the baffle body 1, the two reinforcement rings have the same structure and specifications and are symmetrically arranged with the baffle body 1 as the center;

[0035] Each of the reinforcing rings is a hollow annular body, and a through-hole structure is formed in the hollow position of the annular body. The through-hole position of the reinforcing ring corresponds to the through-hole position of the baffle body 1, and the two reinforcing rings are fixedly connected to the outer surfaces of both sides of the baffle body 1 by welding.

[0036] The design of the reinforcing ring should be calculated according to the load it bears, and its outer diameter should be slightly lower than the top edge of the baffle body 1;

[0037] The inner diameter of the reinforcing ring is formed on the hollow through-hole surface of the reinforcing ring, and the space of the inner diameter is used to cooperate with the shaft pin of the installation elevator; the elevator uses the omega type elevator, which is a universal lifting device, also called a shackle; the elevator includes: an omega ring and a shaft pin;

[0038] The inner diameter of the reinforcing ring is designed according to the rated shaft pin size and the allowance is increased on the basis of the shaft pin size. The size should not be too large, otherwise it will affect the strength of the lifting lug;

[0039] The reinforcing ring is made of a material having the same tensile strength as or slightly higher than that of the baffle body 1 .

[0040] The anti-short circuit component is arranged on one side of the second reinforcement ring 3. The main function of the anti-short circuit component is to prevent the short circuit of the fluid in the shell side of the heat exchanger; the anti-short circuit component includes: a cover plate 4 and a plurality of screws 5; a plurality of screw holes are evenly arranged on the outer side of the second reinforcement ring 3, and the cover plate 4 is fastened to the second reinforcement ring 3 by screws 5;

[0041] The outer diameter of the cover plate 4 is the same as that of the second reinforcing ring 3; the cover plate 4 does not bear pressure, so the thickness should not be too thick, usually not exceeding the thickness of the baffle or 2-4mm less than the thickness of the baffle; the cover plate 4 is removed during hoisting and installed before the tube bundle is reinstalled into the shell;

[0042] The screws 5 are made of stainless steel, and there are three of them evenly distributed, not too many; the diameter of the screws 5 should not be too large, usually M8-12, otherwise the strength of the second reinforcement ring 3 will be affected.

[0043] In this embodiment, the arrangement of a baffle with a lifting ear in a heat exchanger tube bundle is taken as an example. An adjacent baffle 6 is respectively arranged on both sides of the baffle with the lifting ear, and the baffle with the lifting ear is located in the middle, which is called the middle baffle 7; three parallel longitudinal anti-vortex baffles are arranged at the top of the tube bundle and in the vertical direction of the three baffles, and the middle longitudinal anti-vortex baffle 8 is close to the lifting ear of the middle baffle 7. There is a disconnection area 9, which divides the middle longitudinal anti-vortex baffle into two split sections, and the two split sections are respectively welded with a transverse arc short plate 10 at the end near the baffle lifting ear, and the two ends of the transverse arc short plate 10 are respectively connected to the longitudinal anti-vortex baffles 11 on both sides;

[0044] The curvature of the transverse arc-shaped short plate 10 is consistent with the curvature of the outer wall of the heat exchanger tube bundle.

[0045] The utility model that has been put into use can be calculated, modified on site, and verified by engineering technicians or designers.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0050] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

Claims

1. A baffle for hoisting a heat exchanger tube bundle, characterized in that: It includes a baffle body and a lifting mechanism formed on the baffle body, and an anti-short circuit component is arranged on the lifting mechanism located on one side of the baffle body; a through hole is opened on the baffle body at a position corresponding to the lifting mechanism, and the lifting mechanism cooperates with the through hole of the baffle body to form a lifting ear of the baffle; each baffle with a lifting ear serves as a lifting unit of a heat exchanger tube bundle, and at least two lifting units are arranged on each tube bundle according to the center of gravity of the tube bundle.

2. A baffle for hanging a heat exchanger tube bundle according to claim 1, characterized in that: According to the specific length of the entire heat exchanger tube bundle, the number of the baffles is set to be multiple and evenly arranged in the heat exchanger tube bundle.

3. The baffle plate for hanging a heat exchanger tube bundle according to claim 1, characterized in that: The hoisting mechanism on the baffle body comprises: a first reinforcement ring and a second reinforcement ring arranged on both sides of the baffle body. The two reinforcement rings have the same structure and specification and are symmetrically arranged with the baffle body as the center.

4. The baffle plate for hanging a heat exchanger tube bundle according to claim 3, characterized in that: Each of the reinforcing rings is a hollow annular body, and a through-hole structure is formed at the hollow position of the annular body. The through-hole position of the reinforcing ring corresponds to the through-hole position of the baffle body, and the two reinforcing rings are fixedly connected to the outer surfaces of both sides of the baffle body by welding.

5. The baffle plate for hanging a heat exchanger tube bundle according to claim 4, characterized in that: The outer diameter of the reinforcing ring is consistent with or slightly lower than the top edge of the baffle body.

6. A baffle for hanging a heat exchanger tube bundle according to claim 4, characterized in that: The hollow through hole surface of the reinforcing ring forms the inner diameter of the reinforcing ring, and the space of the inner diameter is used to cooperate with the shaft pin of the installation hanging card.

7. The baffle plate for hanging a heat exchanger tube bundle according to claim 3, characterized in that: The anti-short circuit component is arranged on one side of the second reinforcement ring; the anti-short circuit component comprises: a cover plate and a plurality of screws; a plurality of screw holes are evenly arranged on the outside of the second reinforcement ring, and the cover plate is fastened to the second reinforcement ring by screws.

8. The baffle plate for hanging a heat exchanger tube bundle according to claim 1, characterized in that: An adjacent baffle is respectively provided on both sides of the baffle with the lifting ear. The baffle with the lifting ear is located in the middle position, which is called the middle baffle. Three parallel longitudinal anti-vortex baffles are provided at the top of the tube bundle and in the vertical direction of the three baffles. The middle longitudinal anti-vortex baffle is provided with a disconnected area near the lifting ear of the middle baffle. The disconnected area divides the middle longitudinal anti-vortex baffle into two split sections. The two split sections are respectively provided with a transverse arc short plate welded at the end near the baffle lifting ear, and the two ends of the transverse arc short plate are respectively connected to the longitudinal anti-vortex baffles on both sides.

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