High-strength cast iron generator transition joint
By using high-strength cast iron material and heat dissipation fins in the generator transition section, the problem of deformation of the generator end cap transition section due to thermal expansion and contraction in high temperature environments is solved, and the stability and reliability of the transition section are achieved.
Patent Information
- Application Number
- CN202421872776.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-05
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-05
AI Technical Summary
The generator end cap transition joint causes stress due to thermal expansion and contraction in high temperature environments, resulting in deformation, affecting the stability and reliability of the generator.
A transition section of a high-strength cast iron generator is designed, which is covered with a joint sleeve covering the outside of the generator end cover and is fixed by fixing seats and fixing bolts. The heat dissipation ports and heat dissipation fins are installed on both sides to reduce the temperature. At the same time, the fixing base bracket is screwed at the bottom to enhance structural stability.
The heat dissipation effect of the heat dissipation fins reduces the surface temperature of the end cap, avoids stress caused by thermal expansion and contraction of the transition joint, ensures the stability and reliability of the transition joint, and can withstand mechanical stress and vibration during the operation of the generator.
Smart Images
Figure CN222915787U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of generator accessories, and specifically relates to a high-strength cast iron generator transition joint. Background Technique
[0002] The generator end cover transition joint is a component used to connect the generator frame and the drive end cover; its main function is to ensure the concentricity between the stator and rotor parts of the generator, reduce the alignment adjustment installation link of the generator and the prime mover, reduce the labor intensity, and improve the efficiency;
[0003] In a generator, the design and selection of the end cover transition joint need to be carried out according to the size of the generator, the flange size of the end cover, and the shaft extension size;
[0004] During the operation of the generator, a large amount of heat will be generated, resulting in the thermal expansion of components; and it will contract when cooling down after shutdown; the long-term repeated thermal expansion and contraction will cause stress inside the material of the end cover transition joint, and ultimately lead to deformation; for generators operating in high-temperature environments, this thermal cycle is more frequent and intense, and the possibility of deformation is greater. Content of the Utility Model
[0005] The purpose of the utility model is to provide a high-strength cast iron generator transition joint to solve the defects mentioned in the above background technique.
[0006] To achieve the above purpose, a high-strength cast iron generator transition joint is provided, which includes a transition joint body. A sleeve is fixedly installed inside the transition joint body, and a plurality of groups of fixed seats are evenly installed on the outer surface of the sleeve. At the same time, the sleeve covers the outside of the generator end cover and is fixed by the fixed seats and fixing bolts. Heat dissipation openings are opened on both sides of the transition joint body, and a plurality of groups of heat dissipation fins are evenly arranged inside the heat dissipation openings. A second machine base bracket is fixedly screwed on the left side of the bottom of the transition joint body, and a first machine base bracket is fixedly screwed on the right side of the bottom of the transition joint body.
[0007] Preferably, the first machine base bracket and the second machine base bracket are combined into a trapezoidal shape, and both the first machine base bracket and the second machine base bracket are composed of support arms arranged in a "U" shape.
[0008] Preferably, the first machine base bracket and the second machine base bracket are fixedly connected by a reinforcing seat, and the reinforcing seat is an "X" - shaped structure made of metal material. Two groups of installation holes are opened at the bottom of both the first machine base bracket and the second machine base bracket.
[0009] Preferably, the connection between the transition joint body and the sleeve is fixedly connected by a plurality of groups of reinforcing ribs, and the cross - section of the reinforcing ribs is a right - angled trapezoidal structure.
[0010] Preferably, heat dissipation openings are provided on both side surfaces of the transition joint body, heat transfer plates are installed inside the two groups of heat dissipation openings, and the two groups of heat transfer plates respectively cover both sides of the joint sleeve. At the same time, the joint sleeve and the two arc-shaped heat transfer plates are concentric structures.
[0011] Preferably, a plurality of heat dissipation fins are uniformly and fixedly arranged on the outer circumferential positions of the two groups of heat transfer plates, and the plurality of equally spaced heat dissipation fins are uniformly distributed along the outer circumferential positions of the heat transfer plates.
[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0013] When the generator is working, the heat generated by the end cover can be dissipated through a plurality of heat dissipation fins on both sides thereof, the surface temperature of the end cover can be reduced, and the situation that stress is generated inside the material of the end cover transition joint due to the long-term repeated thermal expansion and contraction of the transition joint body, which may ultimately lead to deformation, can be avoided;
[0014] The whole transition joint body is made of high-strength cast iron. High-strength cast iron has high tensile strength and compressive strength, can withstand various mechanical stresses and vibrations generated during the operation of the generator, and ensures the stability and reliability of the transition joint during work. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a front view schematic diagram of the structure of the present utility model;
[0016] Figure 2 is the structure of the present utility model Figure 1 bottom view;
[0017] Figure 3 is the structure of the present utility model Figure 1 top view;
[0018] Figure 4 is the structure of the present utility model Figure 1 sectional structure schematic diagram.
[0019] Reference numerals in the figures: 1, transition joint body; 2, heat dissipation opening; 3, heat dissipation fin; 31, heat transfer plate; 4, joint sleeve; 5, reinforcing rib; 6, fixed seat; 7, support arm; 8, first machine base bracket; 9, reinforcing seat; 10, second machine base bracket. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] Please refer to Figures 1-4, the present utility model provides a high-strength cast iron generator transition joint, which includes a transition joint body 1. A sleeve 4 is fixedly installed inside the transition joint body 1, and a plurality of fixed seats 6 are evenly installed on the outer surface of the sleeve 4. At the same time, the sleeve 4 covers the outside of the generator end cover and is fixed by the fixed seats 6 and fixing bolts. Heat dissipation openings 2 are provided on both sides of the transition joint body 1, and a plurality of heat dissipation fins 3 are evenly arranged inside the heat dissipation openings 2. A second machine base bracket 10 is screwed and fixed to the left side of the bottom of the transition joint body 1, and a first machine base bracket 8 is screwed and fixed to the right side of the bottom of the transition joint body 1.
[0021] Working principle: The sleeve 4 covers the outside of the generator end cover and is fixed by the fixed seats 6 and fixing bolts. The generator end cover is supported and fixed by the present transition joint body 1 to ensure that the output shaft of the generator is in a horizontal state;
[0022] When the generator is working, the heat generated by its end cover can be dissipated through a plurality of heat dissipation fins 3 on both sides thereof, which can reduce the surface temperature of the end cover and avoid the situation that the internal stress is generated in the material of the end cover transition joint due to the long-term repeated thermal expansion and contraction of the transition joint body 1, and finally may lead to deformation.
[0023] As a preferred embodiment, the first machine base bracket 8 and the second machine base bracket 10 are combined into a trapezoidal shape, and both the first machine base bracket 8 and the second machine base bracket 10 are composed of support arms 7 arranged in a "U" shape.
[0024] The first machine base bracket 8 and the second machine base bracket 10 are fixedly connected by a reinforcing seat 9, and the reinforcing seat 9 is an "X" - shaped structure made of metal material. Two sets of mounting holes are provided at the bottom of both the first machine base bracket 8 and the second machine base bracket 10.
[0025] The whole transition joint body 1 is made of high-strength cast iron. High-strength cast iron has high tensile strength and compressive strength, and can withstand various mechanical stresses and vibrations generated during the operation of the generator, ensuring the stability and reliability of the transition joint during work.
[0026] As a preferred embodiment, the connection between the transition joint body 1 and the sleeve 4 is fixedly connected by a plurality of reinforcing ribs 5, and the cross-section of the reinforcing ribs 5 is a right trapezoidal structure.
[0027] Heat dissipation openings 2 are provided on both surfaces of the transition joint body 1, and heat transfer plates 31 are installed inside both sets of heat dissipation openings 2. At the same time, the two heat transfer plates 31 respectively cover both sides of the sleeve 4, and the sleeve 4 and the two arc-shaped heat transfer plates 31 are concentric structures.
[0028] A plurality of groups of heat dissipation fins 3 are uniformly and fixedly arranged at the outer circumferential positions of the two groups of heat transfer plates 31, and the plurality of groups of heat dissipation fins 3 arranged at equal intervals are uniformly distributed along the outer circumferential positions of the heat transfer plates 31.
Claims
1. A high-strength cast iron generator transition section, comprising a transition section body (1), characterized in that: The transition joint body (1) has a joint sleeve (4) fixedly installed inside, and multiple groups of fixing seats (6) are evenly installed on the outer surface of the joint sleeve (4), and the joint sleeve (4) covers the outer side of the generator end cover and is fixed by the fixing seats (6) and fixing bolts, and heat dissipation ports (2) are provided on both sides of the transition joint body (1), and multiple groups of heat dissipation fins (3) are evenly arranged inside the heat dissipation ports (2), the second machine base bracket (10) is screwed and fixed on the left side of the bottom of the transition joint body (1), and the first machine base bracket (8) is screwed and fixed on the right side of the bottom of the transition joint body (1).
2. A high-strength cast iron generator transition section according to claim 1, characterized in that: The first machine base bracket (8) and the second machine base bracket (10) are combined together to form a trapezoidal arrangement, and the first machine base bracket (8) and the second machine base bracket (10) are both composed of a support arm (7) arranged in a "U" shape.
3. A high-strength cast iron generator transition section according to claim 2, characterized in that: The first machine base bracket (8) and the second machine base bracket (10) are fixedly connected via a reinforcing seat (9), and the reinforcing seat (9) is an "X"-shaped structure made of metal material. Two groups of mounting holes are provided at the bottom of the first machine base bracket (8) and the second machine base bracket (10).
4. The high-strength cast iron generator transition section according to claim 1, characterized in that: The connection between the transition section body (1) and the section sleeve (4) is evenly fixedly connected by multiple groups of reinforcing ribs (5), and the cross-section of the reinforcing ribs (5) is a right-angled trapezoidal structure.
5. The high-strength cast iron generator transition section according to claim 1, characterized in that: Heat dissipation openings (2) are provided on both side surfaces of the transition joint body (1), and heat transfer plates (31) are installed inside the two groups of heat dissipation openings (2). The two groups of heat transfer plates (31) respectively cover the two sides of the joint sleeve (4), and the joint sleeve (4) and the two groups of arc-shaped heat transfer plates (31) form a concentric circle structure.
6. A high-strength cast iron generator transition section according to claim 5, characterized in that: A plurality of groups of heat dissipation fins (3) are evenly and fixedly arranged at outer circumferential positions of the two groups of heat transfer plates (31), and the plurality of groups of heat dissipation fins (3) arranged at equal intervals are evenly distributed along the outer circumferential positions of the heat transfer plates (31).