External hybrid water turbine for cooling towers

Abstract

The utility model relates to water turbine technical field discloses a kind of external mixed water turbines for cooling tower, including water turbine shell, bottom fixed installation is used for the generator set for power generation, and the inner cavity of water turbine shell is rotationally installed with runner, and the outer wall of runner is annularly distributed and detachably installed with multiple blades;Dismounting piece is arranged at the outside of runner, and the quick dismounting between multiple blades and the outer wall of runner can be realized by dismounting piece, to facilitate the quick replacement of damaged blade. In the utility model, the quick dismounting between multiple blades and the outer wall of runner can be realized by dismounting piece, to facilitate the quick replacement of damaged blade, and the situation that blade falls off during installation can be prevented, so that runner and undamaged blade can be reused, and the cost and complexity during blade maintenance are reduced.

Description

Technical Field

[0001] This utility model relates to the field of water turbine technology, and in particular to an external hybrid water turbine for cooling towers. Background Technology

[0002] A water turbine is a power machine that converts the energy (potential energy and kinetic energy) of water flow into mechanical energy. It is mainly used in hydroelectric power stations to drive generators to produce electricity.

[0003] When a water turbine converts the potential energy of water flow into the kinetic energy of the turbine blades, it mainly utilizes the impact of high-speed water flow on the blades. The turbine rotates in the air while the water pressure remains relatively constant. The rotation of the turbine drives the rotor of the generator to rotate as well, thus converting kinetic energy into electrical energy for storage. However, if suspended sediment (especially quartz particles) in the water erodes the surface of the turbine blades at high speed, the material on the blade surface will gradually be lost. As the suspended sediment in the water continues to impact the blade surface, cracks or damage will occur on the blades. Once the blade shape is damaged, the water energy conversion rate will decrease, resulting in reduced power generation. Therefore, it is necessary to replace the damaged turbine blades. However, in the current technology, the turbine and blades are an integral structure (the two are welded or integrally die-cast). When replacing damaged blades, the turbine and undamaged blades must be replaced together, which increases the cost and complexity of impeller maintenance. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides an external hybrid water turbine for cooling towers, aiming to improve the problems in the prior art.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an external hybrid water turbine for cooling towers, comprising:

[0006] The turbine casing has a generator set for generating electricity fixedly installed at the bottom, and a runner is rotatably installed in the inner cavity of the turbine casing. Multiple blades are detachably installed in a ring on the outer wall of the runner.

[0007] The disassembly and assembly parts are located on the outside of the rotor. These parts allow for quick disassembly and assembly of multiple blades from the outer wall of the rotor, facilitating the rapid replacement of damaged blades.

[0008] As a further description of the above technical solution:

[0009] The assembly and disassembly components include mounting plates and connecting plates. Mounting plates are fixedly installed on one side of multiple blades. Multiple receiving grooves that fit the mounting plates are distributed in a ring on the outer wall of the rotating wheel. Connecting plates are rotatably installed on both sides of the multiple mounting plates via rotating shafts. Multiple positioning blocks are fixedly installed in a ring on the upper and lower edges of the rotating wheel. Mounting holes that fit the positioning blocks are opened on the outer wall of the multiple mounting plates.

[0010] As a further description of the above technical solution:

[0011] Multiple connecting plates have symmetrical through holes on both sides that match the mounting holes. Limit bolts can be detachably installed in the inner cavity of the through holes. Multiple positioning blocks have through holes on one side that match the limit bolts.

[0012] As a further description of the above technical solution:

[0013] The outer wall of the positioning block and the inner wall of the mounting hole are both curved.

[0014] As a further description of the above technical solution:

[0015] Multiple receiving slots have limit plates fixedly installed on the inner walls away from their opening ends, and one end of the installation plate has a fixing groove that matches the limit plate.

[0016] As a further description of the above technical solution:

[0017] Multiple elastic plates are fixedly installed on both sides of the limiting plate. The multiple elastic plates are bent. Multiple grooves that match the elastic plates are opened on both sides of the inner cavity of the fixing groove.

[0018] This utility model has the following beneficial effects:

[0019] In this invention, multiple blades can be quickly disassembled and assembled with the outer wall of the rotor through the disassembly and assembly parts, so as to facilitate the quick replacement of damaged blades and prevent blades from falling off during installation. This allows the rotor and undamaged blades to be reused, reducing the cost and complexity of blade maintenance. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention;

[0021] Figure 2 This is an assembly drawing of the turbine casing and runner of this utility model;

[0022] Figure 3 This is an assembly drawing of the impeller and blades of this utility model;

[0023] Figure 4 This is an assembly drawing of the blade and mounting plate of this utility model;

[0024] Figure 5 This utility model Figure 3 Enlarged view of the structure at point A in the middle.

[0025] Legend:

[0026] 1. Turbine casing; 2. Generator set; 3. Connecting plate; 4. Blades; 5. Mounting plate; 6. Limiting plate; 7. Positioning block; 8. Runner; 9. Elastic plate; 10. Fixing groove; 11. Mounting hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Reference Figure 1-5 One embodiment of this utility model is an external hybrid water turbine for a cooling tower, comprising:

[0029] The turbine casing 1 has a generator set 2 for power generation fixedly installed at its bottom. A runner 8 is rotatably installed inside the turbine casing 1. Multiple blades 4 are detachably installed in a ring on the outer wall of the runner 8. The power input end of the generator set 2 is fixedly connected to one end of the runner 8 through a drive shaft. When high-speed water flows into the interior of the turbine casing 1 through the water inlet, the high-pressure water flow impacts the multiple blades 4, causing the runner 8 to rotate at high speed along its own axis. The rotating runner 8 transmits power to the generator set 2 through the drive shaft. The generator set 2 converts kinetic energy into electrical energy for storage (this is existing technology and will not be elaborated further here).

[0030] A mounting plate 5 is fixedly installed on one side of each of the multiple blades 4. The outer wall of the rotating wheel 8 is provided with multiple receiving grooves that are compatible with the mounting plate 5 in a ring. After the blades 4 are installed on the outside of the rotating wheel 8, the end of the mounting plate 5 away from the blades 4 is inserted into the inner cavity of the receiving groove, so that the blades 4 and the outer wall of the rotating wheel 8 can be initially connected.

[0031] Multiple mounting plates 5 have connecting plates 3 rotatably mounted on both sides via rotating shafts. Multiple mounting plates 5 have bases symmetrically fixed on both the upper and lower sides. Multiple connecting plates 3 have one end on both sides rotatably connected to the inner wall of the base via rotating shafts. When the connecting plate 3 is moved, the connecting plate 3 rotates around the rotating shaft as the rotation center.

[0032] Multiple positioning blocks 7 are fixedly installed in a ring at both the upper and lower edges of the rotating wheel 8. The outer walls of multiple mounting plates 5 are provided with mounting holes 11 that are compatible with the positioning blocks 7. When the end of the mounting plate 5 away from the blade 4 is in contact with the inner wall of the receiving groove away from the opening end, the connecting plate 3 is moved so that the connecting plate 3 moves towards the central axis of the rotating wheel 8 with the rotating shaft as the rotation center until the end of the positioning block 7 away from the rotating wheel 8 completely penetrates the inner cavity of the mounting hole 11. This can achieve the positioning of the connecting plate 3 and prevent the mounting plate 5 from falling out of the inner cavity of the receiving groove under the action of centrifugal force when the rotating wheel 8 rotates at high speed.

[0033] The connecting plate 3 is designed with an L-shaped structure. When the end of the positioning block 7 away from the rotating wheel 8 completely penetrates the inner cavity of the mounting hole 11, the end of the connecting plate 3 away from the rotating shaft fits against the outer wall of the rotating wheel 8, and the ends of the connecting plate 3 and the rotating wheel 8 are parallel to each other.

[0034] The outer wall of the positioning block 7 and the inner wall of the mounting hole 11 are both curved. When the end of the positioning block 7 away from the rotating wheel 8 completely penetrates the inner cavity of the mounting hole 11, the outer wall of the positioning block 7 and the inner wall of the mounting hole 11 fit together, preventing gaps from forming between the outer wall of the positioning block 7 and the inner wall of the mounting hole 11, which would cause the connecting plate 3 to shake along its own axis, thus improving the stability of the blade 4 after installation.

[0035] Multiple connecting plates 3 have symmetrical through holes on both sides that match the mounting holes 11. Limiting bolts can be detachably installed in the inner cavity of the through holes. Multiple positioning blocks 7 have through holes on one side that match the limiting bolts. When the ends of the connecting plates 3 and the rotating wheel 8 are parallel to each other, the middle of the through holes and the middle of the through holes on both sides of the connecting plates 3 are on the same horizontal line. Then, the small end of the limiting bolt is inserted into the through hole from the inner cavity of one of the through holes and passes through the other through hole until the large end of the limiting bolt is in contact with the outer wall of the connecting plate 3. Then, a limiting nut is installed on the small end of the limiting bolt, and the limiting nut is continuously rotated until one end of the limiting nut is tightly in contact with the other end of the connecting plate 3. This achieves the connection between the positioning blocks 7 of the connecting plates 3, preventing the positioning blocks 7 from falling out of the mounting holes 11 when the rotating wheel 8 rotates at high speed. This achieves the final connection between the blade 4 and the outer wall of the rotating wheel 8.

[0036] Based on the applicant's understanding of the prior art, when the mounting plate 5 is inserted into the inner cavity of the receiving groove and the connecting plate 3 is moved to connect with the positioning block 7, the center of gravity of the blade 4 changes, causing the mounting plate 5 to easily slip out of the inner cavity of the receiving groove, thereby affecting the normal installation of the blade 4 and easily causing damage to the blade 4.

[0037] To solve the above technical problems, a limiting plate 6 is fixedly installed on the inner wall of the multiple receiving grooves away from their own opening ends. One end of the mounting plate 5 is provided with a fixing groove 10 that matches the limiting plate 6. When the end of the mounting plate 5 away from the blade 4 is in contact with the inner wall of the receiving groove away from its own opening end, the end of the limiting plate 6 near the opening end of the receiving groove is inserted into the inner cavity of the fixing groove 10 until the end of the limiting plate 6 near the opening end of the receiving groove is in contact with the inner wall of the fixing groove 10 away from its own opening end.

[0038] Multiple elastic plates 9 are fixedly installed on both sides of the limiting plate 6. The multiple elastic plates 9 are all bent. Multiple grooves that match the elastic plates 9 are opened on both sides of the inner cavity of the fixing groove 10. When the end of the limiting plate 6 near the opening of the receiving groove is inserted into the inner cavity of the fixing groove 10, the outer walls of the multiple elastic plates 9 are in contact with the inner wall of the fixing groove 10. At this time, the elastic plates 9 are deformed under the pressure of the fixing groove 10 until the end of the limiting plate 6 near the opening of the receiving groove is in contact with the inner wall of the fixing groove 10 away from its own opening. Then the external force on the multiple elastic plates 9 disappears and they return to their original position. At this time, the outer wall of the elastic plate 9 and the inner wall of the groove are tightly in contact, thereby increasing the friction between the outer wall of the limiting plate 6 and the inner wall of the fixing groove 10. This prevents the center of gravity of the blade 4 from changing, which would cause the mounting plate 5 to easily slip out of the inner cavity of the receiving groove. This reduces the impact on the normal installation of the blade 4 and avoids actual damage to the blade 4 during installation.

[0039] If one of the blades 4 breaks or is damaged by the impact of mud and sand, use a tool to rotate the large end of the limiting bolt until the limiting bolt separates from the limiting nut. Then pull the limiting bolt out of the through hole. Next, move the connecting plate 3 until the positioning block 7 completely disengages from the mounting hole 11. Then, hold the blade 4 and pull it continuously until the mounting plate 5 disengages from the receiving groove. This will separate the blade 4 from the outer wall of the wheel 8, thus disassembling the blade 4.

[0040] The mounting plate 5, connecting plate 3, positioning block 7, and limiting bolt constitute the disassembly and assembly parts. The disassembly and assembly parts enable quick disassembly and assembly between multiple blades 4 and the outer wall of the rotor 8, so as to facilitate the quick replacement of damaged blades 4 and reduce the cost and complexity of blade 4 maintenance.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An external hybrid water turbine for cooling towers, characterized by: include The turbine casing (1) has a generator set (2) for generating electricity fixedly installed at the bottom, and a runner (8) is rotatably installed in the inner cavity of the turbine casing (1). The outer wall of the runner (8) is detachably equipped with multiple blades (4) arranged in a ring. The disassembly and assembly parts are set on the outside of the rotor (8). The disassembly and assembly parts can realize the quick disassembly and assembly between multiple blades (4) and the outer wall of the rotor (8) so as to facilitate the quick replacement of damaged blades (4). The assembly and disassembly components include mounting plates (5) and connecting plates (3). Mounting plates (5) are fixedly installed on one side of multiple blades (4). Multiple receiving grooves that are compatible with mounting plates (5) are distributed in a ring on the outer wall of the rotating wheel (8). Connecting plates (3) are rotatably installed on both sides of multiple mounting plates (5) through rotating shafts. Multiple positioning blocks (7) are fixedly installed in a ring at the upper and lower edges of the rotating wheel (8). Mounting holes (11) that are compatible with positioning blocks (7) are opened on the outer wall of multiple mounting plates (5).

2. An external mixed-flow water turbine for cooling towers according to claim 1, characterized in that: Multiple connecting plates (3) are symmetrically provided with through holes that are compatible with the mounting holes (11) on both sides. Limiting bolts can be detachably installed in the inner cavity of the through holes. Multiple positioning blocks (7) are provided with through holes that are compatible with the limiting bolts on one side.

3. An external hybrid water turbine for a cooling tower according to claim 2, characterized in that: The outer wall of the positioning block (7) and the inner wall of the mounting hole (11) are both curved.

4. An external mixed-flow water turbine for cooling towers according to claim 1, characterized in that: Multiple receiving slots have a limiting plate (6) fixedly installed on the inner wall away from their opening ends. One end of the mounting plate (5) has a fixing slot (10) that matches the limiting plate (6).

5. An external mixed-flow water turbine for cooling towers according to claim 4, characterized in that: Multiple elastic plates (9) are fixedly installed on both sides of the limiting plate (6). The multiple elastic plates (9) are bent. Multiple grooves that are adapted to the elastic plates (9) are opened on both sides of the inner cavity of the fixing groove (10).

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