Tunnel type shaft generator set with eccentric correction structure for ship

Abstract

The application discloses a marine tunnel type shaft generator set with eccentricity correction structure, which belongs to the technical field of power generation equipment. The device changes the fixing mode of the first bearing, so that when the first bearing is damaged and eccentricity failure occurs, the vibration generated thereby and the gas sucked by the air cylinder can promote the alarm whistle to emit a reminding sound, so as to remind the staff to timely close the generator set, and avoid damage of other components in the generator set. In addition, after the rotor stops rotating, the continued release of the gas can cooperate with the restoring force of the strong spring to push the conversion block to move, so that the conversion block is released from the fixing of the first bearing, and then the second bearing is fixed. When the staff starts the generator set again, the conversion of the damaged first bearing and the second bearing can be completed, so that the working efficiency of the generator set is effectively improved.

Description

Technical Field

[0001] This application relates to the field of power generation equipment technology, and in particular to a marine tunnel-type shaft-driven generator set with an eccentric correction structure. Background Technology

[0002] A generator set is a complete set of mechanical equipment that converts other forms of energy into electrical energy. It consists of a power system, control system, noise reduction system, vibration damping system, and exhaust system. Driven by a water turbine, steam turbine, diesel engine, or other power machinery, it converts the energy generated by water flow, airflow, fuel combustion, or nuclear fission into mechanical energy, which is then transferred to the generator. The generator then converts this mechanical energy into electrical energy, which is output to electrical equipment. Generators have wide applications in industrial and agricultural production, national defense, science and technology, and daily life.

[0003] During long-term use, marine generator sets may experience damage to their internal bearings due to prolonged exposure to humid environments or wear and tear. This can lead to eccentricity of the rotor during high-speed rotation, resulting in continuous vibration. If not addressed promptly, this can severely damage other internal components of the generator set and increase maintenance costs.

[0004] The applicant hypothesizes that if a timely warning could be issued when the bearing is damaged, and the bearing could be replaced automatically after the generator set is shut down, it would not only improve the efficiency of the generator set but also prevent the bearing damage from affecting other components of the generator set. In this regard, the applicant proposes a marine tunnel-type shaft-driven generator set with an eccentric correction structure. Summary of the Invention

[0005] The purpose of this application is to solve the problem that when a bearing fails, the rotor will experience eccentricity during high-speed rotation, resulting in continuous vibration. If not addressed promptly, this can severely damage other components within the generator set. Compared to existing technologies, this application provides a marine tunnel-type shaft-driven generator set with an eccentricity correction structure. This is achieved by installing a stabilizing sleeve inside the generator set, housing a rotor within the stabilizing sleeve, and slidably connecting a conversion block inside the stabilizing sleeve. A first bearing and a second bearing are fixedly connected to the rotor, with the first bearing contacting the conversion block. An annular air box is fixedly connected inside the conversion block, and multiple air cylinders connected to it are mounted on the inner wall of the annular air box. A piston is slidably connected inside each air cylinder, and a roller column is fixedly connected to the lower side wall of the piston. A tension spring is fixedly connected between the piston and the air cylinder, and a one-way valve is installed on each air cylinder. A limit trigger cylinder connected to the annular air box is installed inside the conversion block, and an air pipe connected to the limit trigger cylinder is also installed inside the conversion block. A warning whistle is installed on the side wall of the conversion block and connected to the air pipe. The existing method of fixing the first bearing is changed so that when the first bearing fails and an eccentric fault occurs, the vibration generated by the bearing, together with the gas drawn in by the air pump, will cause the warning whistle to sound, thereby reminding the staff to shut down the generator set in time to avoid damage to other internal components of the generator set.

[0006] Optionally, a limiting cavity is chiseled inside the stabilizing sleeve, and a movable plate is slidably connected inside the limiting cavity. Two limiting posts are fixedly connected to the lower side wall of the movable plate. A slot matching the limiting posts is chiseled on the upper side wall of the conversion block, and the limiting posts are inserted into the slots, which can limit and fix the conversion block and stabilize the first bearing.

[0007] Optionally, a movable block is slidably connected inside the limit trigger cylinder. A fixed net is installed inside the limit trigger cylinder on the lower side of the movable block. Two elastic pull ropes are fixedly connected between the movable block and the fixed net. A top rod is fixedly connected to the upper side wall of the movable block. The conversion block has a channel located directly above the top rod, and the channel is connected to the limit cavity and the limit trigger cylinder. Air pressure can be used to separate the limit post from the conversion block. At the same time, when the rotor stops rotating, the limiting effect of the conversion block can be released, so as to prevent the rotor from shaking due to high-speed rotation during the movement of the conversion block.

[0008] Optionally, a spring ring plate located on one side of the conversion block is fixedly connected inside the stabilizing sleeve. A strong spring is fixedly connected between the spring ring plate and the conversion block, which can drive the conversion block to move.

[0009] Optionally, the push rod is connected with multiple evenly distributed balls, which can effectively reduce the resistance generated when the push rod moves.

[0010] Optionally, a tapered toothed sleeve is fixedly connected to both the first and second bearings, and multiple symmetrically arranged racks are fixedly connected to the inner walls of both sides of the conversion block. Multiple slots matching the racks are drilled on the tapered toothed sleeves to prevent the first and second bearings from rotating.

[0011] Optionally, the inner wall of the limiting cavity is coated with an adhesive layer, which can bond the moving plate and prevent it from falling off and affecting the movement of the conversion block.

[0012] Compared with the prior art, the advantages of this invention are: (1) This solution changes the existing method of fixing the first bearing so that when the first bearing is damaged and an eccentric fault occurs, the vibration generated by it, together with the gas sucked in by the air cylinder, will cause the warning whistle to sound, thereby reminding the staff to shut down the generator set in time to avoid damage to other components inside the generator set. In addition, after the rotor stops rotating, as the gas continues to be released, the restoring force of the strong spring can be used to push the conversion block to move, thereby releasing it from the fixation of the first bearing. Then the second bearing is fixed. When the staff restarts the generator set, the conversion between the damaged first bearing and the second bearing can be completed, thereby effectively improving the working efficiency of the generator set.

[0013] (2) A limiting cavity is carved inside the conversion block. A movable plate is slidably connected inside the limiting cavity. Two limiting posts are fixedly connected to the lower side wall of the movable plate. A slot matching the limiting posts is carved on the upper side wall of the conversion block. The limiting posts are inserted into the slots, which can limit and fix the conversion block and stabilize the first bearing.

[0014] (3) The limit trigger cylinder has a sliding connection with a movable block. The limit trigger cylinder has a fixed net installed on the lower side of the movable block. Two elastic pull ropes are fixedly connected between the movable block and the fixed net. A top rod is fixedly connected to the upper side wall of the movable block. The conversion block has a channel located directly above the top rod. The channel is connected to the limit cavity and the limit trigger cylinder. Air pressure can be used to separate the limit post from the conversion block. At the same time, when the rotor stops rotating, the limiting effect of the conversion block can be released, so as to avoid the rotor shaking due to high speed rotation during the movement of the conversion block.

[0015] (4) A spring ring plate located on one side of the conversion block is fixedly connected inside the stabilizing sleeve. A strong spring is fixedly connected between the spring ring plate and the conversion block, which can drive the conversion block to move.

[0016] (5) Multiple evenly distributed balls are rolled on the top bar, which can effectively reduce the resistance generated when the top bar moves.

[0017] (6) Both the first bearing and the second bearing are fixedly connected with tapered tooth sleeves, and both the left and right inner walls of the conversion block are fixedly connected with multiple symmetrically arranged racks. Multiple slots matching the racks are drilled on the tapered tooth sleeves, which can prevent the first bearing and the second bearing from rotating.

[0018] (7) The inner wall of the limiting cavity is coated with an adhesive layer, which can bond the moving plate and prevent the moving plate from falling off and affecting the movement of the conversion block. Attached Figure Description

[0019] Figure 1 This is a three-dimensional view of the present application; Figure 2This is a schematic diagram of the internal structure of the stabilizing sleeve in this application; Figure 3 This is a structural schematic diagram of the bearing portion of this application; Figure 4 This is a schematic diagram of the structure of the conversion block portion of this application; Figure 5 This is a schematic diagram of the structure between the conversion block and the stabilizing sleeve in this application; Figure 6 This is a schematic diagram of the internal structure of the air cylinder in this application; Figure 7 This is a schematic diagram of the internal structure of the limit trigger cylinder in this application; Figure 8 This is a diagram showing the state of the first bearing in this application when it is damaged; Figure 9 This is a status diagram of the application when a sound reminder is given; Figure 10 This is a state diagram of the limit post disengaging from the conversion block in this application; Figure 11 This is a schematic diagram of the structure at the top rod of this application; Figure 12 This is a state diagram of the transition block during the movement of this application.

[0020] Explanation of the labels in the diagram: 1 Generator set, 2 Stabilizing sleeve, 3 Rotor, 31 First bearing, 32 Second bearing, 33 Conical gear sleeve, 331 Rack, 4 Converter block, 5 Spring ring plate, 51 Strong spring, 6 Annular air box, 7 Air cylinder, 71 Roller column, 72 Piston, 73 Tension spring, 74 One-way valve, 8 Limit trigger cylinder, 81 Moving block, 82 Fixing net, 83 Elastic pull rope, 84 Top rod, 841 Ball bearing, 9 Limit cavity, 91 Moving plate, 92 Limit post, 93 Adhesive, 10 Air pipe, 101 Warning whistle. Detailed Implementation

[0021] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0022] Example 1:

[0023] This application discloses a marine tunnel-type shaft-driven generator set with an eccentricity correction structure. Please refer to [link / reference]. Figure 1-2 and Figure 4-5The system includes a generator set 1, a stabilizing sleeve 2 installed inside the generator set 1, a rotor 3 installed inside the stabilizing sleeve 2, a switching block 4 slidably connected inside the stabilizing sleeve 2, a first bearing 31 and a second bearing 32 fixedly connected to the rotor 3, the first bearing 31 contacting the switching block 4, an annular air box 6 fixedly connected inside the switching block 4, multiple air cylinders 7 connected to the annular air box 6 installed on the inner side wall, a piston 72 slidably connected inside the air cylinder 7, a roller column 71 fixedly connected to the lower side wall of the piston 72, a tension spring 73 fixedly connected between the piston 72 and the air cylinder 7, a one-way valve 74 installed on the air cylinder 7, a limit trigger cylinder 8 connected to the annular air box 6 installed inside the switching block 4, an air pipe 10 connected to the limit trigger cylinder 8 installed inside the switching block 4, and a warning whistle 101 installed on the side wall of the switching block 4, and the warning whistle 101 connected to the air pipe 10.

[0024] During normal use, the first bearing 31 is fixed and limited by the conversion block 4, so that the first bearing 31 can fix the rotor 3, thereby achieving stable rotation of the rotor 3.

[0025] Please see Figure 6-9 During the operation of generator set 1, when the first bearing 31 is damaged due to wear, the high-speed rotating rotor 3 becomes eccentric because it cannot be sufficiently limited by the first bearing 31, and vibrates. While vibrating, the rotor 3 continuously pushes against one of the roller columns 71. Under the restoring force of the tension spring 73, the roller column 71 drives the piston 72 to reciprocate, causing the one-way valve 74 to continuously draw in air, which is then discharged through the annular air box 6 into the interior of the limit trigger cylinder 8. This causes a portion of the gas inside the limit trigger cylinder 8 to be discharged through the air pipe 10 from the warning whistle 101, emitting a sound, such as... Figure 9 As shown, this serves as a reminder to staff to shut down generator set 1 in a timely manner to prevent continuous vibration of rotor 3, which could lead to severe damage to the first bearing 31, causing malfunctions in other components inside generator set 1 and increasing maintenance costs.

[0026] Additional explanation: When rotor 3 vibrates, since the second bearing 32 is not in direct contact with the conversion block 4, rotor 3 will drive the second bearing 32 to vibrate together.

[0027] Please see Figure 10-12The stabilizing sleeve 2 has a limiting cavity 9 inside, and a moving plate 91 is slidably connected inside the limiting cavity 9. Two limiting posts 92 are fixedly connected to the lower side wall of the moving plate 91. The upper side wall of the conversion block 4 has a slot that matches the limiting posts 92, and the limiting posts 92 are inserted into the slot. The limiting trigger cylinder 8 has a moving block 81 slidably connected inside, and a fixed net 82 located below the moving block 81 is installed inside the limiting trigger cylinder 8. Two elastic pull ropes 83 are fixedly connected between the moving block 81 and the fixed net 82. A top rod 84 is fixedly connected to the upper side wall of the moving block 81. The conversion block 4 has a channel located directly above the top rod 84, and the channel is connected to the limiting cavity 9 and the limiting trigger cylinder 8. The stabilizing sleeve 2 has a spring ring plate 5 located on one side of the conversion block 4, and a strong spring 51 is fixedly connected between the spring ring plate 5 and the conversion block 4.

[0028] When gas enters the limit trigger cylinder 8, it will also drive the moving block 81 to move upward, causing the top rod 84 to push the moving plate 91 to move upward, causing the limit post 92 to disengage from the conversion block 4. Subsequently, as the operator shuts off the generator set 1, the speed of the rotor 3 gradually decreases, causing the amount of air entering the limit trigger cylinder 8 to gradually decrease. As the air slowly exits from the air pipe 10, under the tension of the elastic rope 83, the moving block 81 slowly moves downward and pulls the top rod 84 to disengage from the stabilizing sleeve 2. At this time, the conversion block 4 loses its limit and, under the thrust of the strong spring 51, the conversion block 4 contacts the second bearing 32.

[0029] Please see Figure 3 A tapered toothed sleeve 33 is fixedly connected to both the first bearing 31 and the second bearing 32. Multiple symmetrically arranged racks 331 are fixedly connected to the inner walls of the left and right sides of the conversion block 4. Multiple slots matching the racks 331 are drilled on the tapered toothed sleeve 33. By inserting the racks 331 into the multiple slots on the tapered toothed sleeve 33, and with the thrust of the strong spring 51, the second bearing 32 is limited. When the operator restarts the generator set 1, the conversion between the damaged first bearing 31 and the second bearing 32 can be completed, thus improving its working efficiency.

[0030] Multiple evenly distributed balls 841 are rolled on the top rod 84, which can effectively reduce the resistance generated when the top rod 84 moves.

[0031] The inner wall of the limiting cavity 9 is coated with a layer of adhesive 93, which can bond the moving plate 91 and prevent the moving plate 91 from falling off and affecting the movement of the conversion block 4.

[0032] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A marine tunnel-type shaft-driven generator set with an eccentric correction structure, comprising a generator set (1), characterized in that: The generator set (1) is equipped with a stabilizing sleeve (2), and a rotor (3) is installed inside the stabilizing sleeve (2). A conversion block (4) is slidably connected inside the stabilizing sleeve (2). A first bearing (31) and a second bearing (32) are fixedly connected to the rotor (3). The first bearing (31) is in contact with the conversion block (4). An annular air box (6) is fixedly connected inside the conversion block (4). Multiple air cylinders (7) connected to the annular air box (6) are installed on the inner wall of the annular air box (6). A piston (72) is slidably connected inside the air cylinder (7). The piston (72) is fixedly connected to the lower side wall of the piston (71), and a tension spring (73) is fixedly connected between the piston (72) and the air cylinder (7). A one-way valve (74) is installed on the air cylinder (7). A limit trigger cylinder (8) connected to the annular air box (6) is installed inside the conversion block (4). An air pipe (10) connected to the limit trigger cylinder (8) is installed inside the conversion block (4). A reminder whistle (101) is installed on the side wall of the conversion block (4), and the reminder whistle (101) is connected to the air pipe (10). The stabilizing sleeve (2) has a limiting cavity (9) inside. A moving plate (91) is slidably connected inside the limiting cavity (9). Two limiting posts (92) are fixedly connected to the lower side wall of the moving plate (91). The upper side wall of the conversion block (4) has a slot that matches the limiting post (92), and the limiting post (92) is inserted into the slot. A moving block (81) is slidably connected inside the limiting trigger cylinder (8). A fixed net (82) located below the moving block (81) is installed inside the limiting trigger cylinder (8). Two elastic pull ropes (83) are fixedly connected between the moving block (81) and the fixed net (82). A top rod (84) is fixedly connected to the upper side wall of the moving block (81). The conversion block (4) has a channel located directly above the top rod (84), and the channel is connected to the limiting cavity (9) and the limiting trigger cylinder (8). The stabilizing sleeve (2) is fixedly connected to a spring ring plate (5) located on one side of the conversion block (4), and a strong spring (51) is fixedly connected between the spring ring plate (5) and the conversion block (4). The inner wall of the limiting cavity (9) is coated with a layer of adhesive (93).

2. A marine tunnel-type shaft-driven generator set with an eccentric correction structure according to claim 1, characterized in that: The top rod (84) is connected to a plurality of evenly distributed balls (841) in a rolling manner.

3. A marine tunnel-type shaft-driven generator set with an eccentric correction structure according to claim 1, characterized in that: A tapered toothed sleeve (33) is fixedly connected to both the first bearing (31) and the second bearing (32), and multiple symmetrically arranged racks (331) are fixedly connected to the left and right inner walls of the conversion block (4).

4. A marine tunnel-type shaft-driven generator set with an eccentric correction structure according to claim 3, characterized in that: The tapered toothed sleeve (33) has multiple slots that match the rack (331).

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