Hub cylinder ring of steam turbine generator

Abstract

The utility model discloses a steam turbine generator hub cylinder ring, which relates to the technical field of steam turbine generators and comprises an outer cylinder ring, flanges are connected to two sides of the outer cylinder ring through bearings, a plurality of groups of mounting holes are arranged in the flanges, a plurality of groups of key slots are arranged above the outer sides of the flanges, a fixing ring is sleeved on the outer side of the outer cylinder ring, and an inner cylinder ring is arranged in the outer cylinder ring. A cooling mechanism is arranged between the outer cylinder ring and the inner cylinder ring, multiple sets of heat conduction grooves are formed in the inner side of the inner cylinder ring, lubricating mechanisms are arranged on the side edges of the heat conduction grooves, multiple sets of threaded holes are formed in the flange and the outer cylinder ring, and long bolts matched with the threaded holes are arranged in the flange and the outer cylinder ring and are movably connected. According to the utility model, the performance and the service life of the hub cylinder ring of the steam turbine generator are improved, and the safe and stable operation of an electric power system is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to steam turbine generator technical field especially relates to steam turbine generator flower drum cylinder ring. BACKGROUND

[0002] In the modern industrial field, steam turbine generator as the core equipment of electric power production, its performance and stability are directly related to the operation efficiency and safety of the whole electric power system, and among the numerous components of steam turbine generator, flower drum cylinder ring as the key component of connecting rotor and stator, supporting rotor weight and transmitting torque, its design, manufacturing and material selection bear extremely high technical requirements, however, with the continuous progress of technology and the increasingly strict operation requirements, the existing steam turbine generator flower drum cylinder ring structure gradually exposes some shortcomings, these defects not only affect the overall performance of the generator;

[0003] The existing flower drum cylinder ring structure has the problem of insufficient structural strength when bearing high-speed rotation and great pressure, is prone to deformation or damage, affects the normal operation of the equipment, secondly, due to the harsh working environment, the friction between the flower drum cylinder ring and the bearing and other components causes the surface to be easily worn, so that the equipment maintenance cost is higher, at the same time, affects the operation efficiency of the equipment, at the same time, the flower drum cylinder ring generates a large amount of heat during long-time high-load operation, and the heat conduction efficiency of the existing structure is low, which easily causes local overheating, affects the service life and performance of the equipment. UTILITY MODEL CONTENTS

[0004] The utility model provides a kind of steam turbine generator flower drum cylinder ring, solve the problem of insufficient structural strength of existing steam turbine generator flower drum cylinder ring, poor wear resistance and low heat conduction efficiency.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A kind of steam turbine generator flower drum cylinder ring, including outer cylinder ring, the outer cylinder ring both sides are connected with flange by bearing, and the inside of the flange is provided with multiple groups of mounting holes, the outside of the flange is provided with multiple groups of key grooves above, and the outer cylinder ring is provided with fixed ring outside, the inside of the outer cylinder ring is provided with inner cylinder ring, and cooling mechanism is arranged between the outer cylinder ring and the inner cylinder ring, the inside of the inner cylinder ring is provided with multiple groups of heat conduction grooves, and the side of the heat conduction groove is provided with lubricating mechanism, the inside of the flange and the outer cylinder ring is provided with multiple groups of screw holes, and the inside of the flange and the outer cylinder ring is provided with long bolt that is movably connected with the screw hole matched.

[0007] Preferably, the side of the flange is provided with mounting groove matched with bearing, and the middle of the outer cylinder ring and the inner cylinder ring is provided with slot hole, one end of the bearing is connected to the inside of the mounting groove, and the other end of the bearing is installed in the inside of the slot hole.

[0008] Preferably, the cooling mechanism comprises the heat sink, the mounting seat, and a plurality of mounting seats are arranged on the bearing side of the slot hole, and a plurality of heat sinks are arranged in the mounting seat.

[0009] Preferably, the lubricating mechanism comprises the nozzle, the oil storage bin, and the oil storage bin is arranged between the heat conduction grooves in the inner cylinder ring, a plurality of nozzles are arranged on both sides of the heat conduction groove, and the oil storage bin is connected to the nozzle to form the lubricating structure.

[0010] Preferably, the inner cylinder ring is provided with a plurality of rotor support frames, and the inner side of the rotor support frame is provided with an annular rack.

[0011] Preferably, the inner side of the flange is provided with a baffle, the middle of the baffle is provided with an elastic support seat, and the outer side of the elastic support seat is provided with a plurality of heat dissipation holes in the baffle.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1、The steam turbine generator flower drum cylinder ring, the inner cylinder ring is arranged in the outer cylinder ring, the fixed ring is arranged outside the outer cylinder ring, the design of the multi-cylinder ring layer is adopted, the structure of the flower drum cylinder ring is optimized and designed, the thickness and the strength of the key position are increased, so that the ability of bearing high-speed rotation and great pressure is improved, simultaneously, the fixed ring adopts the high-strength material, and the overall structural strength is improved, secondly, the long bolt matched with the threaded hole in the outer cylinder ring is arranged in the flange, and the overall strength and stability are improved.

[0014] 2、The heat conduction groove side is provided with the lubricating structure, a plurality of nozzles are arranged on both sides of the heat conduction groove, the inner cylinder ring is provided with the oil storage bin, the lubricating structure is optimized, the inner surface of the inner cylinder ring is formed into the lubricating coating with good wear resistance through the oil storage bin and the nozzle, so that the wear resistance is improved, the friction is reduced, the wear speed is reduced, and the service life of the steam turbine generator is prolonged.

[0015] 3、The inner side of the inner cylinder ring is provided with a plurality of heat conduction grooves, and the inner side of the inner cylinder ring is provided with a plurality of rotor support frames and the middle of the baffle is provided with an elastic support seat, the elastic support and the sliding connection are adopted, the thermal expansion is effectively managed, and the interference and stress concentration between parts are effectively avoided. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model.

[0017] Figure 2Another perspective structure schematic view of the utility model.

[0018] Figure 3 Explosion structure schematic view of the utility model.

[0019] Figure 4 Lubricating mechanism structure schematic view of the utility model.

[0020] In the drawing, 1 is an outer cylinder ring, 2 is a flange, 3 is a mounting hole, 4 is a key groove, 5 is an inner cylinder ring, 6 is a bearing, 7 is a fixing ring, 8 is a heat conduction groove, 9 is a threaded hole, 10 is a long bolt, 11 is a mounting groove, 12 is a slot hole, 13 is a cooling fin, 14 is a mounting seat, 15 is a nozzle, 16 is an oil storage bin, 17 is a rotor support frame, 18 is an annular rack, 19 is a baffle, 20 is an elastic support seat, and 21 is a cooling hole. Specific implementation

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0022] Reference Figures 1-4 The utility model provides a kind of steam turbine generator flower drum cylinder ring, including outer cylinder ring 1, flange 2 is connected on the both sides of outer cylinder ring 1 by bearing 6, and multiple sets of mounting holes 3 are arranged in the inside of flange 2, it is convenient to install and fix the flower drum cylinder ring, multiple sets of key grooves 4 are arranged on the outside of flange 2 top, the setting of key groove 4 is used to install transmission key, to realize the reliable transmission of torque, and fixed ring 7 is sleeved on the outside of outer cylinder ring 1, inner cylinder ring 5 is arranged in the inside of outer cylinder ring 1, and cooling mechanism is arranged between outer cylinder ring 1 and inner cylinder ring 5, multiple sets of heat conduction grooves 8 are arranged in the inside of inner cylinder ring 5, and lubricating mechanism is arranged in the side of heat conduction groove 8, multiple sets of threaded holes 9 are arranged in the inside of flange 2 and outer cylinder ring 1, and long bolt 10 that is matched with threaded hole 9 is movably connected in the inside of flange 2 and outer cylinder ring 1, which helps to improve the strength and stability of flower drum cylinder ring as a whole;Flange 2 side is provided with the mounting groove 11 matched with bearing 6, and the middle of outer cylinder ring 1 and inner cylinder ring 5 is provided with slot hole 12, one end bearing 6 is connected in the inside of mounting groove 11, and the other end bearing 6 is installed in the inside of slot hole 12, to ensure the stability when flower drum cylinder ring operates;Cooling mechanism includes cooling fin 13, mounting seat 14, and multiple sets of mounting seat 14 are arranged in the side of bearing 6 in the inside of slot hole 12, multiple sets of cooling fins 13 are arranged in the inside of mounting seat 14 to form cooling structure, which helps to improve its heat conduction efficiency, to ensure the stability of steam turbine generator operation.

[0023] Reference Figure 4The lubricating mechanism comprises the nozzle 15 and the oil storage bin 16, and the oil storage bin 16 is arranged between the heat conduction grooves 8 inside the inner cylinder ring 5, a plurality of groups of nozzles 15 are arranged on both sides of the heat conduction grooves 8, and the oil storage bin 16 is connected to the nozzles 15 to form the lubricating structure, so that a lubricating coating with good wear resistance is formed on the inner side of the inner cylinder ring 5, the wear resistance is improved, and the service life of the steam turbine generator is prolonged. Figure 2 , Figure 3 A plurality of groups of rotor support frames 17 are arranged inside the inner cylinder ring 5, and an annular rack 18 is arranged on the inner side of the rotor support frame 17. A baffle 19 is arranged inside the one-end flange 2, an elastic support seat 20 is arranged in the middle of the baffle 19, and a plurality of groups of heat dissipation holes 21 are arranged on the outer side of the elastic support seat 20 inside the baffle 19, so that the thermal expansion is effectively managed, and the interference and stress concentration between components are effectively avoided.

[0024] Specifically, during use of the steam turbine generator flower drum cylinder ring, the bearing 6 is installed in the installation groove 11, and the other end is connected to the slot hole 12, so that the flange 2 is stably connected to the outer cylinder ring 1 and the inner cylinder ring 5.

[0025] During work, the steam turbine generator generates significant temperature rise during operation, resulting in thermal expansion of each component. The elastic support seat 20 and the rotor support frame 17 are connected by elastic support and sliding connection, effectively relieving and managing thermal expansion. At the same time, the oil storage bin 16 is connected to the nozzle 15, so that a lubricating coating with good wear resistance is formed on the inner side of the inner cylinder ring 5, improving the wear resistance. When the steam turbine generator is operated for a long time under high load, the flower drum cylinder ring generates a large amount of heat, the inner cylinder ring 5 is heat-conducted by the heat conduction grooves 8 inside the inner cylinder ring 5, and the outer cylinder ring 1 and the inner cylinder ring 5 are further heat-dissipated by the plurality of groups of heat dissipation fins 13 in the middle of the outer cylinder ring 1 and the inner cylinder ring 5, which helps to improve the service life and performance of the steam turbine generator.

[0026] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A turbine generator hub ring, comprising an outer ring (1), characterized in that, The outer cylinder ring (1) is connected to flanges (2) on both sides by bearings (6), and the flanges (2) are provided with multiple sets of mounting holes (3). Multiple sets of keyways (4) are provided on the upper side of the flanges (2), and a fixing ring (7) is sleeved on the outer side of the outer cylinder ring (1). An inner cylinder ring (5) is provided inside the outer cylinder ring (1), and a cooling mechanism is provided between the outer cylinder ring (1) and the inner cylinder ring (5). Multiple sets of heat conduction grooves (8) are provided on the inner side of the inner cylinder ring (5), and a lubrication mechanism is provided on the side of the heat conduction grooves (8). Multiple sets of threaded holes (9) are provided inside the flanges (2) and the outer cylinder ring (1), and long bolts (10) matching the threaded holes (9) are provided inside the flanges (2) and the outer cylinder ring (1) to form a movable connection.

2. The turbine generator hub ring according to claim 1, characterized in that, The flange (2) has a mounting groove (11) that matches the bearing (6) on its side, and the outer cylinder ring (1) and the inner cylinder ring (5) have a slot (12) in the middle. One end of the bearing (6) is connected to the inside of the mounting groove (11), and the other end of the bearing (6) is installed inside the slot (12).

3. The turbine generator hub ring according to claim 2, characterized in that, The cooling mechanism includes heat sinks (13) and mounting bases (14), and multiple sets of mounting bases (14) are provided inside the slot (12) on the side of the bearing (6), and multiple sets of heat sinks (13) are provided inside the mounting bases (14) to form a cooling structure.

4. The turbine generator hub ring according to claim 1, characterized in that, The lubrication mechanism includes a nozzle (15) and an oil reservoir (16). The oil reservoir (16) is located inside the inner ring (5) between the heat conduction grooves (8). Multiple sets of nozzles (15) are provided on both sides of the heat conduction grooves (8). The oil reservoir (16) is connected to the nozzles (15) to form a lubrication structure.

5. The turbine generator hub ring according to claim 1, characterized in that, The inner cylinder ring (5) is provided with multiple sets of rotor support frames (17), and the inner side of the rotor support frame (17) is provided with an annular rack (18).

6. The turbine generator hub ring according to claim 1, characterized in that, A baffle (19) is provided inside the flange (2) at one end, and an elastic support seat (20) is provided in the middle of the baffle (19). Multiple sets of heat dissipation holes (21) are provided on the outer side of the elastic support seat (20) inside the baffle (19).

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