Core pulling tool for heat exchanger

By designing a heat exchanger core-pulling fixture and adopting a horizontal guide rail and bracket structure, the high cost problem caused by large-tonnage cranes and core-pulling machines was solved, enabling low-cost and high-efficiency maintenance that can flexibly adapt to different specifications of equipment.

CN223604288UActive Publication Date: 2025-11-28CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Application Number
CN202423200860.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-24
Publication Date
2025-11-28
Estimated Expiration
2034-12-24

AI Technical Summary

Technical Problem

The maintenance of existing heat exchangers requires large-tonnage cranes and core-pulling machines, resulting in high construction costs and difficulty in flexibly adapting to heat exchange equipment of different specifications.

Method used

Design a heat exchanger core-pulling fixture that includes horizontal guide rails, hangers, lifting lugs, and chain hoists. It enables rapid assembly and disassembly through bolted connections and plug-in joints, reducing the crane tonnage requirement.

Benefits of technology

It reduces construction costs, improves work efficiency, reduces manpower and auxiliary material consumption, has a wide range of applications, and is easy to transport and store.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a heat exchanger core pulling tool which comprises two horizontal guide rails, one ends of the two horizontal guide rails are connected with a head end flange of a heat exchanger shell through bolts I, the other ends of the two horizontal guide rails are supported by a support, a hanging frame is connected to the ends, away from a heat exchanger, of the horizontal guide rails, and the hanging frame stretches across the two horizontal guide rails. A lifting lug is arranged on the side, close to the heat exchanger, of the hanging frame, the lifting lug is horizontally arranged, and a chain block is connected to the lifting lug. According to the utility model, the use of a core-pulling machine can be avoided, the use tonnage of the crane can be reduced, the cost of core-pulling machine renting, reshipping and the like is saved, the renting cost of a large crane is saved, and the construction cost is reduced; and the working efficiency can be improved, the investment of manpower and auxiliary material consumables is reduced, and the construction cost is reduced. The utility model has the advantages of light weight, convenience in transportation and storage and wide application range, and the components are connected by inserting and bolts, so that the components can be quickly assembled and disassembled.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of petroleum chemical engineering construction, and particularly relates to a heat exchanger core pulling tool. BACKGROUND

[0002] The heat exchange equipment occupies an important position in oil refining and chemical production, which can not only provide necessary process conditions for the production process, but also plays an important role in reducing energy consumption and production cost. The heat exchanger is prone to produce crystalline substances in operation, and these crystalline substances continuously deposit on the surface of the heat exchanger, which affects the heat exchange efficiency and increases the energy consumption, so the heat exchanger needs to be overhauled. The core pulling machine and the crane are used for general heat exchanger overhaul, and the tonnage of the crane needs to be increased to meet the use demand for the equipment far away from the crane and high equipment. The use of large-tonnage crane and core pulling machine will inevitably increase the construction cost. UTILITY MODEL CONTENTS

[0003] The utility model discloses a heat exchanger core pulling tool, and the core pulling is implemented by using the tool, so that the tonnage of the crane can be reduced, and the construction cost can be reduced.

[0004] The utility model discloses a heat exchanger core pulling tool, and the core pulling is implemented by using the tool, so that the tonnage of the crane can be reduced, and the construction cost can be reduced.

[0005] The horizontal guide rail is made of a steel pipe.

[0006] The bracket is provided with two vertical columns, a horizontal support is arranged on the two vertical columns, and a bottom plate is arranged on the lower end of the vertical column.

[0007] A plug connector is arranged below the end of the horizontal guide rail away from the heat exchanger, and a socket is arranged on the top of the bracket and matched with the plug connector.

[0008] The bracket is provided with two vertical columns, a horizontal support is arranged on the two vertical columns, and a bottom plate is arranged on the lower end of the vertical column.

[0009] The vertical column and the horizontal support are made of steel pipes.

[0010] The utility model has the advantages and positive effects that: adopting the tooling to complete the core pulling construction can avoid using the core pulling machine, can reduce the tonnage of the crane, saves the core pulling machine leasing and freight and other expenses, saves the leasing expense of the large crane, reduces the construction cost; adopting the tooling to complete the core pulling construction can improve the work efficiency, reduces the manpower, the auxiliary material consumption, reduces the construction cost, and achieves the purpose of reducing cost and increasing benefit. Meanwhile, the utility model is light in quality, adopts the plug-in and bolt connection between the parts, can be quickly matched and disassembled, and is convenient to transport and store; by changing the distance between the two tracks, the heat exchange equipment of different specifications can be applied, and the application range is wide. Moreover, the utility model also has the advantages of simple structure, convenient manufacturing, convenient and practical use, strong operability and reusability. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] In the drawing: 1, horizontal guide rail; 2, inverted chain; 3, hanging rack; 4-1, stand; 4-2, bottom plate; 4-3, cross brace; 5, bolt II; 6, lifting lug; 7, bolt I. DETAILED DESCRIPTION

[0013] In order to further understand the invention content, characteristics and effects of the utility model, the following examples are given, and the detailed description is as follows in combination with the drawings:

[0014] Please refer to Figure 1 A heat exchanger core pulling tooling, including two horizontal guide rails 1, one end of two horizontal guide rails 1 is connected with the head end flange of heat exchanger shell through bolt I 7, the other end is supported by support, the end of horizontal guide rail 1 away from heat exchanger is connected with hanging rack 3, the hanging rack 3 is across two horizontal guide rails 1, the lifting lug 6 is arranged on the side of the hanging rack 3 close to the heat exchanger, the lifting lug 6 is horizontally arranged, the inverted chain 2 is connected on the lifting lug 6.

[0015] In the embodiment, the horizontal guide rail 1 is made of steel pipe, which is simple in structure and convenient to manufacture. The hanging rack 3 is provided with a connecting sleeve, the sleeve is installed at the end of the horizontal guide rail 1, and the two are fixed by bolt II 5, which is convenient for installation and disassembly. The plug-in connector is arranged below the end of the horizontal guide rail 1 away from the heat exchanger, and the socket is arranged on the top of the support and matched with the plug-in connector, which is convenient for installation and disassembly. The support is provided with two left and right stand columns 4-1, and the cross brace 4-3 is arranged between the two stand columns 4-1, and the bottom plate 4-2 is arranged at the lower end of the stand column 4-1. The stand column 4-1 and the cross brace 4-3 are both made of steel pipe, which is simple in structure and convenient to manufacture.

[0016] Installation and use of the utility model:

[0017] The horizontal guide rail 1 is installed, one end of which is fixed with the equipment and the other end is supported by a support, then a hanging rack is installed, and a drop chain is connected. When the core is drawn, the pipe bundle is first drawn out by half by the drop chain, then a crane is used to cooperate, and the pipe bundle lifting point is changed until the pipe bundle is completely drawn out.

[0018] Although the preferred embodiments of the present application are described above with reference to the drawings, the present application is not limited to the specific embodiments described above, and the specific embodiments described above are merely illustrative and are not restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims, which all belong to the protection scope of the present application.

Claims

1. A heat exchanger core extraction tool, characterized by, The application relates to a heat exchanger supporting device, which comprises two horizontal guide rails, one end of the two horizontal guide rails is connected with a head flange of a heat exchanger shell through bolts I, the other end is supported by a support, a hanging frame is connected with the end of the horizontal guide rail far from the heat exchanger, the hanging frame crosses the two horizontal guide rails, a lifting lug is arranged on the side of the hanging frame close to the heat exchanger, the lifting lug is horizontally arranged, and an inverted chain is connected with the lifting lug.

2. The heat exchanger core pulling tool of claim 1, wherein, The horizontal guide rail is made of a steel pipe.

3. The heat exchanger core pulling tool of claim 1, wherein, The hanging frame is provided with a connecting sleeve pipe, the sleeve pipe is arranged at the end of the horizontal guide rail, and the two are fixed through bolts II.

4. The heat exchanger core pulling tool of claim 1, wherein, A plug connector is arranged below the end of the horizontal guide rail far from the heat exchanger, and a socket is arranged on the top of the support and matched with the plug connector.

5. The heat exchanger core pulling tool of claim 1, wherein, The support is provided with two left and right vertical columns, a cross support is arranged between the two vertical columns, and a bottom plate is arranged at the lower end of the vertical column.

6. The heat exchanger core pulling tool of claim 5, wherein, The vertical column and the cross support are both made of steel pipes.