Power-loss monitoring and shutdown protection device for speed regulator of hydraulic generator

Abstract

The utility model belongs to the field of hydro-generator speed regulators, and particularly relates to a hydro-generator speed regulator power-loss monitoring and protection shutdown device which comprises a speed regulator body, a transmission wheel is rotatably connected to the inner wall of the speed regulator body, a heat dissipation notch is formed in the speed regulator body, a shutdown structure is arranged on the speed regulator body, and the speed regulator body is connected with the transmission wheel. A cooling structure is arranged on the speed regulator body, the shutdown structure comprises a supporting plate, the inner wall of the speed regulator body is fixedly connected with the supporting plate, the top of the supporting plate is fixedly connected with an electric cylinder seat, and the output end of the electric cylinder seat is fixedly connected with a pushing plate. According to the power failure monitoring and protection shutdown device for the speed regulator of the hydraulic generator, through the innovative design of the electric cylinder seat and the hinge rod, a transmission wheel rotating at a high speed is braked rapidly and effectively under the power failure condition, potential safety hazards caused by stall are effectively prevented, and the overall safety and stability of a speed regulation system of the hydraulic generator are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogenerator governors, in particular to a power failure monitoring and protection shutdown device for a hydrogenerator governor. Background Technique

[0002] The hydroturbine governing system is a comprehensive test platform designed specifically for hydropower generation, which can comprehensively evaluate the performance of the governing system under conditions such as no-load swing, disturbance, load rejection, etc., including the dead time and the static characteristics of the governor, to ensure the accurate operation of the automatic synchronization system.

[0003] At present, the stable operation of the hydroturbine governing system depends on continuous power supply. If a power outage occurs and the system loses power, the high-speed rotating hydrogenerator governor may stall due to loss of control, thereby threatening the safety of the entire system. Therefore, it is particularly important to design and transform a power failure monitoring and protection shutdown device for the hydrogenerator governor to prevent stalling and ensure system safety. In view of this, we propose a power failure monitoring and protection shutdown device for a hydrogenerator governor. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a power failure monitoring and protection shutdown device for a hydrogenerator governor, which can solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model proposes the following technical solutions:

[0006] A power failure monitoring and protection shutdown device for a hydrogenerator governor, including a governor body, a driving wheel is rotatably connected to the inner wall of the governor body, a heat dissipation slot is opened on the governor body, a shutdown structure is arranged on the governor body, a cooling structure is arranged on the governor body, and the shutdown structure includes:

[0007] A support plate, the support plate is fixedly connected to the inner wall of the governor body, and an electric cylinder seat is fixedly connected to the top of the support plate;

[0008] A push plate, the output end of the electric cylinder seat is fixedly connected to the push plate, and a hinge rod is hinged to the outer wall of the push plate;

[0009] A guide rail, the guide rail is fixedly connected to the inner wall of the governor body, and a sliding plate is slidably connected to the outer wall of the guide rail.

[0010] Preferably, one end of the hinge rod away from the push plate is hinged to the outer wall of the sliding plate. A brake pad is fixedly connected to the outer wall of the sliding plate. An inclined sliding groove is formed in the sliding plate, and the inner wall of the inclined sliding groove is slidably connected to the outer wall of the guide rail. When the electric cylinder base pushes the push plate upward, through the cooperation of the hinge rod, the sliding plate is driven to slide on the guide rail, so that the sliding plate approaches the transmission wheel, and the brake pad contacts the surface of the transmission wheel, thereby braking it.

[0011] Preferably, the cooling structure includes a mounting plate. A water pump is fixedly connected to the top of the mounting plate, and the outer wall of the mounting plate is fixedly connected to the inner wall of the speed regulator body, and the water pump is supported by the mounting plate.

[0012] Preferably, a water connection pipe is fixedly connected to the water inlet end of the water pump, and a water outlet elbow pipe is fixedly connected to the water outlet end of the water pump. The water connection pipe penetrates through the mounting plate and is inserted into the inside of the cooling water tank. The water pump is started to make the water connection pipe absorb water.

[0013] Preferably, one end of the water outlet elbow pipe away from the water pump is fixedly connected to a Z-shaped docking pipe, and one end of the Z-shaped docking pipe away from the water outlet elbow pipe is fixedly connected to a cooling water pipe. The water flowing through the water outlet elbow pipe flows into the Z-shaped docking pipe and then into the cooling water pipe to cool the brake pad on the sliding plate.

[0014] Preferably, the outer wall of the cooling water pipe is fixedly connected to the inner wall of the sliding plate, and the inner wall of the speed regulator body is fixedly connected to a cooling water tank. An avoidance sliding groove is formed in the cooling water tank, and the movement of the sliding plate drives the cooling water pipe to move in the avoidance sliding groove.

[0015] The utility model provides a power failure monitoring and protection shutdown device for a water turbine generator speed regulator. It has the following beneficial effects:

[0016] (1) Through the innovative design of the electric cylinder base and the hinge rod, rapid and effective braking of the high-speed rotating transmission wheel in the case of power failure is achieved, effectively preventing potential safety hazards caused by stall, and improving the overall safety and stability of the water turbine generator speed regulation system.

[0017] (2) Through the coordinated work of the water pump, the water connection pipe, the water outlet elbow pipe, the Z-shaped docking pipe and the cooling water pipe, the heat generated by friction during the braking process is timely dissipated, ensuring that the heat can be quickly absorbed and taken away, effectively reducing the temperature of the brake pad, slowing down its wear speed, thereby prolonging the service life of the brake pad, reducing the replacement cost and shutdown maintenance time, and improving the operation efficiency and economy of the water turbine generator speed regulation system. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the partial cross-sectional structure of the speed regulator body and the shutdown structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the partial cross-sectional structure of the hinge rod and the sliding plate of the present invention;

[0022] Figure 4 It is an exploded structure diagram of the Z-shaped docking pipe and the cooling water tank of the present invention.

[0023] In the figure: 1. Speed regulator body; 2. Driving wheel; 3. Heat dissipation slot; 4. Shutdown structure; 41. Support plate; 42. Electric cylinder seat; 43. Push plate; 44. Hinge rod; 45. Guide rail; 46. Sliding plate; 47. Brake pad; 5. Cooling structure; 51. Mounting plate; 52. Water pump; 53. Connecting water pipe; 54. Outlet elbow pipe; 55. Z-shaped docking pipe; 56. Cooling water pipe; 57. Cooling water tank.

[0024] The realization, functional features and advantages of the purpose of the present invention will be further described in conjunction with the embodiments with reference to the drawings. Specific embodiments

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] Please refer to Figures 1-4, the present utility model proposes a power failure monitoring and protection shutdown device for a hydrogenerator governor, which includes a governor body 1. A transmission wheel 2 is rotatably connected to the inner wall of the governor body 1. A heat dissipation notch 3 is provided on the governor body 1. A shutdown structure 4 is arranged on the governor body 1. A cooling structure 5 is arranged on the governor body 1. The shutdown structure 4 includes a support plate 41. The support plate 41 is fixedly connected to the inner wall of the governor body 1. An electric cylinder seat 42 is fixedly connected to the top of the support plate 41. The output end of the electric cylinder seat 42 is fixedly connected to a push plate 43. A hinge rod 44 is hinged to the outer wall of the push plate 43. A guide rail 45 is fixedly connected to the inner wall of the governor body 1. A sliding plate 46 is slidably connected to the outer wall of the guide rail 45.

[0027] In the present utility model, one end of the hinge rod 44 away from the push plate 43 is hinged to the outer wall of the sliding plate 46. A brake pad 47 is fixedly connected to the outer wall of the sliding plate 46. An inclined chute is provided on the sliding plate 46. The inner wall of the inclined chute is slidably connected to the outer wall of the guide rail 45. When the electric cylinder seat 42 pushes the push plate 43 to move upward, through the cooperation of the hinge rod 44, the sliding plate 46 is driven to slide on the guide rail 45, so that the sliding plate 46 approaches the transmission wheel 2, and the brake pad 47 contacts the surface of the transmission wheel 2, thereby braking it.

[0028] Further, the cooling structure 5 includes a mounting plate 51. A water pump 52 is fixedly connected to the top of the mounting plate 51. The outer wall of the mounting plate 51 is fixedly connected to the inner wall of the governor body 1. The mounting plate 51 supports the water pump 52. A connecting water pipe 53 is fixedly connected to the water inlet end of the water pump 52. A water outlet elbow pipe 54 is fixedly connected to the water outlet end of the water pump 52. The connecting water pipe 53 penetrates through the mounting plate 51 and is inserted into the inside of the cooling water tank 57. The water pump 52 is started to make the connecting water pipe 53 absorb water, and then it is discharged from the water outlet elbow pipe 54 through the water pump 52.

[0029] Further, one end of the water outlet elbow pipe 54 away from the water pump 52 is fixedly connected to a Z-shaped docking pipe 55. One end of the Z-shaped docking pipe 55 away from the water outlet elbow pipe 54 is fixedly connected to a cooling water pipe 56. The water flow of the water outlet elbow pipe 54 flows through the Z-shaped docking pipe 55 and flows into the cooling water pipe 56 to cool the brake pad 47 on the sliding plate 46, avoiding the brake pad 47 having too high a temperature and reducing the braking effect. The outer wall of the cooling water pipe 56 is fixedly connected to the inner wall of the sliding plate 46. A cooling water tank 57 is fixedly connected to the inner wall of the governor body 1. An avoidance chute is provided on the cooling water tank 57. The movement of the sliding plate 46 drives the cooling water pipe 56 to move in the avoidance chute.

[0030] During use, the electric cylinder seat 42 is used to push the push plate 43 to move upward, and then through the cooperation of the hinge rod 44, the sliding plate 46 is driven to slide on the guide rail 45, so that the sliding plate 46 approaches the transmission wheel 2, and the brake pad 47 contacts the surface of the transmission wheel 2, thereby braking it;

[0031] When the brake pad 47 brakes the transmission wheel 2, heat is generated by friction, which will cause the temperature at the brake pad 47 to rise. At this time, the water pump 52 sucks water from the water storage tank 57 through the water connection pipe 53, so that the water is discharged from the water outlet elbow pipe 54. The water flow of the water outlet elbow pipe 54 flows through the Z-shaped connection pipe 55 and into the cooling water pipe 56 to cool the sliding plate 46 and the brake pad 47. Through the cooling treatment, the wear rate of the brake pad 47 can be slowed down, its service life can be extended, and the replacement frequency and cost can be reduced.

[0032] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A power failure monitoring and protection shutdown device for a hydrogenerator governor, comprising a governor body (1), characterized in that: A transmission wheel (2) is rotatably connected to the inner wall of the speed regulator body (1). A heat dissipation notch (3) is formed in the speed regulator body (1). A shutdown structure (4) is provided on the speed regulator body (1). A cooling structure (5) is provided on the speed regulator body (1). The shutdown structure (4) includes: A support plate (41). The support plate (41) is fixedly connected to the inner wall of the speed regulator body (1). An electric cylinder seat (42) is fixedly connected to the top of the support plate (41); A push plate (43). The output end of the electric cylinder seat (42) is fixedly connected to the push plate (43). A hinge rod (44) is hinged to the outer wall of the push plate (43); A guide rail (45). The guide rail (45) is fixedly connected to the inner wall of the speed regulator body (1). A sliding plate (46) is slidably connected to the outer wall of the guide rail (45).

2. The power failure monitoring and protection shutdown device for a hydrogenerator governor according to claim 1, wherein: One end of the hinge rod (44) away from the push plate (43) is hinged to the outer wall of the sliding plate (46). A brake pad (47) is fixedly connected to the outer wall of the sliding plate (46).

3. The power loss monitoring and protection shutdown device for a hydrogenerator speed governor according to claim 1, characterized in that: The cooling structure (5) includes a mounting plate (51). A water pump (52) is fixedly connected to the top of the mounting plate (51).

4. A power failure monitoring and protection shutdown device for a hydrogenerator governor according to claim 3, characterized in that: A connecting water pipe (53) is fixedly connected to the water inlet end of the water pump (52). An outlet curved pipe (54) is fixedly connected to the water outlet end of the water pump (52).

5. A power failure monitoring and protection shutdown device for a hydrogenerator governor according to claim 4, characterized in that: One end of the outlet curved pipe (54) away from the water pump (52) is fixedly connected to a Z-shaped docking pipe (55). One end of the Z-shaped docking pipe (55) away from the outlet curved pipe (54) is fixedly connected to a cooling water pipe (56).

6. The power loss monitoring and protection shutdown device for a hydrogenerator speed governor according to claim 5, characterized in that: The outer wall of the cooling water pipe (56) is fixedly connected to the inner wall of the sliding plate (46). A cooling water tank (57) is fixedly connected to the inner wall of the speed regulator body (1).

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