Tooling equipment for extrusion treatment of connecting pipe and flange
By designing a tooling equipment for extrusion treatment of the joint pipe and the flange, the hydraulic cylinder and the conical shaft are used to achieve a close connection between the joint pipe and the flange, the slag inclusion problem caused by the non-welding of the inner port is solved, and the operation reliability of the product is improved and resources are saved.
Patent Information
- Application Number
- CN202421795232.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-29
AI Technical Summary
During the connection between the transformer oil tank connection pipe and the flange, steel slag is sandwiched in the gap formed by the inlet of the inner port in the prior art, which causes the thermal circulation of oil during product operation to suspend the slag inclusion, causing local short circuits or transformer failure, and the existing welding methods waste manpower and material resources.
Design a tooling equipment for extrusion of the joint pipe and flange. Through the cooperation of the hydraulic cylinder and the conical shaft, the uniform and tight extrusion of the circumference of the joint pipe end and the inner diameter of the flange are achieved to avoid slag inclusion.
The tight connection between the joint pipe and the flange is achieved, the formation of slag inclusion is avoided, the operation reliability of the product is improved, manpower and material resources are saved, and the welding quality is improved.
Smart Images
Figure CN222818319U_ABST
Abstract
Description
Technical field:
[0001] The utility model relates to a tooling device for extruding a transformer oil tank connecting pipe and a flange. Background technology:
[0002] During the preparation of the coupling pipe of the transformer oil tank, the flange must first be connected to the end of the coupling pipe, and then the coupling pipe and the transformer oil tank are connected through the flange.
[0003] At present, the flange is connected to the coupling pipe by welding. The coupling pipe is mostly made of galvanized pipe. The galvanized pipe and the flange only need to be welded on the outside to ensure strength, and no welding is required on the inside, that is, the rear end face of the flange is welded to the outer wall of the coupling pipe, and the end face of the inner ring of the flange is not welded to the outer wall of the coupling pipe at that location.
[0004] During the subsequent sandblasting process of the product (connected couplings and flanges), it was found that steel slag was trapped in the gap formed at the inner mouth, which caused inconvenience to the subsequent finishing process. If it is not cleaned up, the thermal cycle of the oil during the operation of the product will cause the slag to flow with the oil and float inside the transformer. This will inevitably cause a local short circuit of the product, and in severe cases, it will cause the transformer to fail completely, resulting in serious consequences.
[0005] In order to avoid slag inclusion in the gap formed at the inner opening, the rear end face of the flange is welded to the outer wall of the connecting pipe, and the end face of the inner ring of the flange is also welded to the outer wall of the connecting pipe at that location, that is, both the inside and the outside are welded, so that there will be no gap and slag inclusion is avoided; but this wastes manpower and material resources, and the welding effect of the inner opening is not good. Summary of the invention:
[0006] The technical problem to be solved by the utility model is to provide a tooling equipment for extrusion processing of a connecting pipe and a flange, which can extrude the circumference of the connecting pipe end and the flange together, avoiding the problem of steel slag being sandwiched in the gap due to the inner mouth not being welded, and the waste of manpower and material resources in welding.
[0007] The purpose of the utility model is achieved in this way:
[0008] The operating platform comprises an operating table, a supporting frame is fixed on the top of the operating table, a hydraulic cylinder is arranged on the supporting frame, and a hydraulic pump station connected with the hydraulic cylinder is arranged in the middle of the operating table;
[0009] A workpiece placement rack is also fixed on the top of the operating table. The workpiece placement rack is provided with a workpiece placement groove with an opening facing upward. The plunger shaft of the hydraulic cylinder faces the workpiece placement rack. A tapered shaft is welded to the end of the plunger shaft of the hydraulic cylinder, and the small end of the tapered shaft faces the workpiece placement rack.
[0010] The tapered shaft is coaxial with the plunger shaft of the hydraulic cylinder, and the diameter of the large end of the tapered shaft is larger than the diameter of the connecting pipe.
[0011] The advantages of the utility model are: the device connects the flange and the coupling pipe by extrusion, so that the circumference of the coupling pipe end and the inner diameter of the flange are extruded evenly and tightly, without the hidden danger of slag inclusion. It avoids the problem that the gap formed by the lack of welding at the inner mouth in the prior art is filled with steel slag, and the steel slag is not cleaned up, which affects the thermal circulation of the oil during the operation of the product, causing the slag to flow with the oil and float inside the transformer, causing a local short circuit of the product, and in severe cases, it can cause the transformer to completely fail, resulting in serious consequences; and the problem that the inner mouth welding wastes manpower and material resources. Description of the drawings:
[0012] Figure 1 It is a structural schematic diagram of the utility model. Specific implementation method:
[0013] Combine the following Figure 1 Further explain the utility model;
[0014] It includes an operating table 1, a support frame 2 is fixed on the top of the operating table, a hydraulic cylinder 3 is arranged on the support frame, and a hydraulic pump station 4 connected to the hydraulic cylinder is arranged in the middle of the operating table;
[0015] A workpiece placement rack 5 is also fixed on the top of the operating table. The workpiece placement rack is provided with a workpiece placement groove with an opening facing upward. The plunger shaft of the hydraulic cylinder faces the workpiece placement rack. A tapered shaft 6 is welded to the end of the plunger shaft of the hydraulic cylinder, and the small end of the tapered shaft faces the workpiece placement rack.
[0016] The tapered shaft is coaxial with the plunger shaft of the hydraulic cylinder, and the diameter of the large end of the tapered shaft is larger than the diameter of the connecting pipe.
[0017] Working process:
[0018] A hydraulic pump is used to drive a three-phase asynchronous motor to realize the conversion of electrical energy, mechanical energy and hydraulic energy.
[0019] Weld the outer end face of flange 7 to the outer wall of coupling pipe 8, then place the coupling pipe to be extruded in the workpiece placement groove of the workpiece placement rack, attach the flange to the workpiece placement rack, and place the surface to be extruded facing the hydraulic cylinder. At this time, the tapered shaft and the coupling pipe should be on the same center line.
[0020] Start the hydraulic cylinder, and the tapered shaft will be inserted into the coupling to squeeze it, so that the circumference of the coupling end and the inner diameter of the flange are squeezed evenly and tightly without the risk of slag inclusion. After the extrusion is completed, the squeezed part is ground to ensure a smooth and even surface.
[0021] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A tooling device for extrusion processing of a connecting pipe and a flange, comprising an operating table (1), characterized in that: A support frame (2) is fixed on the top of the operating table, a hydraulic cylinder (3) is arranged on the support frame, and a hydraulic pump station (4) connected to the hydraulic cylinder is arranged in the middle of the operating table; A workpiece placement rack (5) is also fixed on the top of the operating table. The workpiece placement rack is provided with a workpiece placement groove with an opening facing upward. The plunger shaft of the hydraulic cylinder faces the workpiece placement rack. A tapered shaft (6) is welded to the end of the plunger shaft of the hydraulic cylinder, and the small end of the tapered shaft faces the workpiece placement rack.
2. The tooling equipment for extrusion processing of connecting pipes and flanges according to claim 1 is characterized in that: The tapered shaft is coaxial with the plunger shaft of the hydraulic cylinder, and the diameter of the large end of the tapered shaft is larger than the diameter of the connecting pipe.