Electric turning flywheel for labyrinth compressor
By designing a split electric disc flywheel, using technical means such as inverted welding bevels and cone holes, the problems of weight increase and static balance of traditional flywheels are solved, and the effects of strength increase, weight reduction and installation efficiency improvement are achieved.
Patent Information
- Application Number
- CN202422043197.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-08-22
AI Technical Summary
The flywheel of traditional maze compressors needs to increase the thickness to enhance the strength of the key connection, which increases weight, affects the service life of the crankshaft main bearing, and the drilling and deduplication affects the aesthetics during static balance tests.
A split electric disc flywheel is designed, which is arranged separately from the wheel hub and is connected through the entire circle of the inverted welding bevel to eliminate welding stress and improve installation efficiency through the taper hole and process ring groove.
It effectively improves the strength of the flywheel and the crankshaft connection, reduces the weight of the flywheel, improves the installation and disassembly efficiency, and ensures the static balance and aesthetics of the flywheel.
Smart Images
Figure CN222880225U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an improved invention of a labyrinth compressor, in particular to an improved invention of an electric turning flywheel for a labyrinth compressor. Background Art
[0002] The bodies of traditional horizontal compressors are all open, and the crankshaft extension end can adopt a flange structure to clamp the flywheel with the motor side flange to form a traditional coupling structure; while the vertical labyrinth piston compressor has its structural characteristics. When the body needs to adopt a closed structure, a mechanical seal must be installed at the crankshaft extension end to form a closed space with the body, which also determines that the crankshaft cannot have its own transmission flange.
[0003] Because the crankshaft extension end adopts mechanical seal, the crankshaft and flywheel are connected by key connection. The strength and shear stress of the key are verified. The axial dimension of the connection between the flywheel and the crankshaft needs to be increased (compared with the traditional structure, see the attached Figure 2 ). However, if the flywheel is simply thickened as a whole, not only will the cost increase dramatically, but the heavy flywheel will also exert excessive gravity pressure on the crankshaft main bearing, preventing the formation of oil film, reducing the service life of the main bearing, and causing the tail of the crankshaft to "warp" on one side, affecting the overall balanced operation of the unit.
[0004] At the same time, during the static balance test of the traditional flywheel, holes are drilled on the end face of the flywheel to remove weight, which affects the overall appearance. Figure 2 . Utility Model Content
[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an electric turning flywheel for a labyrinth compressor.
[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions: the electric turning flywheel for the labyrinth compressor includes a flywheel and a hub, the outer circle of the flywheel is provided with a turning gear, and is characterized in that: the thickness of the flywheel is less than the axial length of the hub, the flywheel and the hub are separately arranged, and a reverse welding groove is provided between the corresponding flywheel and the hub, and they are connected by a full circle welding; the positioning hole of the hub is set as a tapered hole, and a process ring groove is provided in the middle part of the tapered hole.
[0007] A manual turning hole is arranged at the root circle of the turning gear.
[0008] The flywheel is provided with a hoisting hole.
[0009] The hoisting holes are processed secondary, and balance grooves are arranged on the adjacent flywheel end faces.
[0010] The beneficial effect of the utility model is that the improved electric turning flywheel for the labyrinth compressor is that the flywheel and the hub are divided into two parts, the grooves are reverse-welded respectively, the whole circle is fully welded, and machining is performed after the welding stress is eliminated, thereby ensuring the strength of the key connection and effectively reducing the weight of the flywheel; at the same time, the tapered hole is adopted, which greatly improves the efficiency of installation and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.
[0012] Figure 1 It is a structural schematic diagram of the utility model.
[0013] Figure 2 This is a structural diagram of a traditional flywheel of the utility model. DETAILED DESCRIPTION
[0014] The accompanying drawings show the structure of the utility model, and the following further describes its relevant details in conjunction with the accompanying drawings. Figure 1-2 The electric turning flywheel for the labyrinth compressor includes a flywheel 1 and a hub 2. The outer circle of the flywheel 1 is provided with a turning gear 3. The thickness of the flywheel 1 is less than the axial length of the hub 2. The flywheel 1 and the hub 2 are separately arranged. A reverse welding groove 4 is provided between the corresponding flywheel 1 and the hub 2, and they are connected by full welding of the whole circle. The welding stress is eliminated before machining, which ensures the strength of the key connection and effectively reduces the weight of the flywheel 1. The positioning hole of the hub 2 is set as a tapered hole 5, which greatly improves the efficiency of installation and disassembly, and a process ring groove 6 is provided in the middle part of the tapered hole 5 to eliminate internal thermal deformation and improve the contact rate at both ends, which is better than the straight hole positioning hole of the traditional flywheel 1.
[0015] As a further improved specific implementation method, a manual turning hole 7 is provided at the root circle of the turning gear 3, and when the electric turning device fails, a manual turning emergency plan is reserved in advance.
[0016] As a further improved specific implementation manner, a hoisting hole 8 is opened on the flywheel 1 to facilitate the installation of the flywheel 1.
[0017] As a further improved specific implementation method, the lifting hole 8 is processed twice, and a balancing groove 9 is set on the adjacent end face of the flywheel 1 to remove the overall unevenness, ensure the overall static balance of the flywheel 1, and make the end face overall flush and beautiful.
[0018] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. An electric turning flywheel for a labyrinth compressor, comprising a flywheel and a hub, wherein a turning gear is disposed on the outer circumference of the flywheel, and characterized in that: The thickness of the flywheel is smaller than the axial length of the hub. The flywheel and the hub are separately arranged. A corresponding inverted welding groove is provided between the flywheel and the hub, and they are connected by full circle welding. The positioning hole of the hub is set as a tapered hole, and a process ring groove is provided in the middle of the tapered hole.
2. The electric turning flywheel for a labyrinth compressor according to claim 1, characterized in that: A manual turning hole is arranged at the root circle of the turning gear.
3. The electric turning flywheel for a labyrinth compressor according to claim 1, characterized in that: The flywheel is provided with a hoisting hole.
4. The electric turning flywheel for a labyrinth compressor according to claim 3, characterized in that: The hoisting holes are processed secondary, and balance grooves are arranged on the adjacent flywheel end faces.