Dust absorption device for brake of hydraulic generator

Abstract

The utility model provides a hydro-generator brake dust absorption device which comprises a brake arranged in a turbine pit, a dust collection box is connected to the periphery of the lower portion of the brake in a sealed mode, a negative pressure cavity formed by the dust collection box is connected with a first metal hose through a flange, and the first metal hose is connected with one end of an outlet pipe through an annular pipe. The other end of the outlet pipe is connected with a filter through a second metal hose; the outlet pipe is horizontally buried in pit concrete, one end of the outlet pipe is arranged in a pit, the other end of the outlet pipe is arranged outside the pit, and the first metal hose and the second metal hose are obliquely arranged downwards. A constructor can clean the dust collecting device, namely the filter, which is fully absorbed outside the machine pit, and does not need to enter the machine pit, so that manpower and material resources are saved, and potential safety hazards are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of water turbine generator, specifically relates to a water turbine generator brake dust absorption device. BACKGROUND

[0002] When the traditional water turbine generator set is stopped and braked, the dust generated by the friction of the brake block or the dust that cannot be cleaned in time falls in the generator and pollutes the parts, which may cause the operation accident of the water turbine generator. The existing brake dust absorption device is mostly directly connected with the brake in the pit, and the construction personnel need to enter the pit to install, set, debug and maintain the equipment and clean the absorbed dust, which consumes a lot of manpower and material resources and may cause safety accidents.

[0003] Chinese patent publication No. CN219911575U, published on October 27, 2023, discloses a patent named power station unit brake dust absorption device. The patent includes a plurality of enclosing plates installed around the brake, which are connected to form a negative pressure cavity, and a dust absorption device connected through a connecting pipe. The end of the enclosing plate is provided with a brush, and the end of the brush is flush with the brake gate plate. When the brake is braked, the dust absorption device is started to generate negative pressure, so as to collect the dust generated by the brake into the enclosing plate and discharge it through the connecting pipe. Although the device can absorb dust, it is installed in the pit and directly connected with the brake. When the equipment fails or the dust absorption device needs to be cleaned, the construction personnel need to enter the pit to operate, which consumes manpower and material resources and has safety hazards. UTILITY MODEL CONTENTS

[0004] The utility model provides a water turbine generator brake dust absorption device, which realizes cleaning and absorption of the full dust collection device outside the pit by setting the dust collection box and the lead-out pipe buried in the pit concrete, without entering the pit, saving manpower and material resources, and reducing safety hazards.

[0005] In order to achieve the above object, the utility model discloses the following technical scheme: a water turbine generator brake dust absorption device, including the brake of being placed in the machine pit, the dust collection box of being connected with the seal around the brake below, the dust collection box forms the negative pressure cavity and is connected with the first metal flexible pipe through the flange, the brake is connected with the first metal flexible pipe through the flange, and the first metal flexible pipe is connected with the filter through the second metal flexible pipe one end of the ring pipe connection lead-out pipe, and the other end of lead-out pipe is connected with the filter through the second metal flexible pipe. The lead-out pipe is horizontally buried in the machine pit concrete, one end is in the machine pit, the other end is outside the machine pit, and the first metal flexible pipe and the second metal flexible pipe are all inclined downward.

[0006] Preferably, the brake is installed on the lower rack support arm, and one end of the first metal flexible pipe is vertically connected. The brake is connected with the first metal flexible pipe through the flange and the fixed bolt. This installation mode makes the connection of the brake and the first metal flexible pipe more stable and reliable, and the use of the flange and the fixed bolt can effectively prevent leakage at the connection, ensure the sealing of the dust absorption system, and facilitate disassembly and maintenance.

[0007] Preferably, the first metal flexible pipe is vertically arranged at both ends and inclined downward at the middle section, and one end is connected with the steel pipe through the flange and the fixed bolt. The inclined downward middle section can use gravity to make the dust flow smoothly to the filter, reducing the accumulation of dust in the pipeline, and this design can adapt to the space layout in the machine pit, improving the space utilization.

[0008] Preferably, the steel pipe is vertically arranged, and the steel pipe, the ring pipe and the first metal flexible pipe are pre-buried in the machine pit. The ring pipe is horizontally arranged. Pre-buried steel pipe, ring pipe and first metal flexible pipe in the machine pit can effectively protect the pipeline from the influence of the external environment, prolong the service life of the pipeline, and the horizontally arranged ring pipe facilitates uniform distribution and transportation of dust, improving dust absorption efficiency.

[0009] Preferably, the steel pipe is vertically arranged, and the steel pipe, the ring pipe and the first metal flexible pipe are pre-buried in the machine pit. The ring pipe is horizontally arranged. Pre-buried steel pipe, ring pipe and first metal flexible pipe in the machine pit can effectively protect the pipeline from the influence of the external environment, prolong the service life of the pipeline, and the horizontally arranged ring pipe facilitates uniform distribution and transportation of dust, improving dust absorption efficiency.

[0010] Preferably, the lead-out pipe is connected with the second metal flexible pipe through the flange and the fixed bolt at one end outside the machine pit. Connecting the second metal flexible pipe through the flange and the fixed bolt can ensure the tightness of the connection between the lead-out pipe and the second metal flexible pipe, prevent dust leakage, facilitate disassembly and replacement, and reduce maintenance cost.

[0011] Preferably, the two ends of the second metal hose are horizontally positioned, while the middle section is angled downwards. This downward-sloping middle section allows dust to flow smoothly to the filter using gravity, reducing dust accumulation within the pipe. Simultaneously, the horizontally positioned ends facilitate connection to the filter and vacuum pump, improving the overall system performance.

[0012] Preferably, the end of the second metal hose furthest from the pit is connected to a filter via a flange and fixing bolts. This connection method ensures a tight connection between the filter and the second metal hose, preventing dust leakage, while also facilitating filter disassembly and replacement, thus improving system maintenance efficiency.

[0013] Preferably, one end of the filter is connected to a second metal flexible hose, and the other end is connected to a vacuum pump. Connecting the filter to the vacuum pump enables efficient dust absorption and filtration, while the vacuum pump provides sufficient negative pressure to ensure the normal operation of the dust absorption system and improve the overall performance of the system.

[0014] Preferably, the second metal hose, filter, and vacuum pump are all located outside the pit. Placing these components outside the pit avoids the harsh environment inside the pit affecting the equipment, extends its service life, facilitates maintenance and cleaning by operators, and reduces safety hazards.

[0015] The beneficial effects of this utility model are as follows: This utility model provides a dust absorption device for a hydro-generator brake, which achieves the cleaning of the dust collection device (filter) outside the generator pit, eliminating the need to enter the pit, thus saving manpower and resources and reducing safety hazards. It has a simple structure, reliable long-term operation, convenient on-site commissioning, and simple installation and maintenance. It effectively reduces the probability of accidents caused by dust contamination of internal parts of the generator set. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Reference numerals: 1: Lower frame support arm; 2: Brake; 3: Flange; 4: Fixing bolt; 5: First metal flexible hose; 6: Steel pipe; 7: Ring pipe; 8: Outlet pipe; 9: Second metal flexible hose; 10: Filter; 11: Vacuum pump; 12: Machine pit; 13: Dust collection box. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] During the operation of a hydro-generator, the brake 2 generates a large amount of dust during frequent braking. If this dust is not cleaned in time, it will not only contaminate the internal parts of the generator, reduce the performance and service life of the equipment, but may also cause serious safety accidents. The dust absorption device for the hydro-generator brake 2 of this utility model effectively solves this problem and greatly improves the safety and reliability of the hydro-generator operation.

[0020] like Figure 1 As shown, the dust absorption device for the turbine generator brake 2, when the turbine generator unit stops and brakes, the dust generated by the friction of the brake blocks falls into the dust collection box 13 built into the brake 2 due to frictional inertia. The lower end of the dust collection box 13 is equipped with a first metal hose 5, which is connected to a pre-embedded steel pipe 6 and a pre-embedded ring pipe 7 through a flange 3. Under the action of the vacuum pump 11, the dust in the pipeline is sucked into the filter 10 through the outlet pipe 8 and finally discharged outside the turbine pit 12. The dust absorption device for the turbine generator brake 2 is mainly laid out around the turbine generator pit 12. Inside the turbine pit 12, the key component is the brake 2, which is the source of dust generation and the starting point of the entire absorption device. The brake 2 is installed on the lower frame support arm 1 and is vertically connected to one end of the first metal hose 5 through a flange 3 and fixing bolts 4. This installation method not only makes the connection between the brake 2 and the first metal hose 5 more stable and reliable, but also facilitates disassembly and maintenance. The tight fit between flange 3 and fixing bolt 4 effectively prevents leakage at the connection, ensures the sealing of the dust absorption system, and provides a solid foundation for subsequent dust absorption work.

[0021] The first metal flexible hose 5 has two vertical ends and a downward-sloping middle section. This design fully considers the characteristics of the dust and the spatial layout within the machine pit 12. The downward-sloping middle section utilizes gravity to allow the dust to flow smoothly to the filter 10, reducing dust accumulation in the pipe and improving dust transport efficiency. Simultaneously, this design cleverly adapts to the complex spatial structure within the machine pit 12, improving space utilization and avoiding space waste and installation difficulties caused by unreasonable pipe layout.

[0022] The other end of the first flexible metal hose 5 is connected to a steel pipe 6 via a flange 3 and fixing bolts 4. The steel pipe 6 is vertically installed, with its top end connected to the first flexible metal hose 5 and its bottom end connected to a ring pipe 7. The steel pipe 6 is parallel to the plane of the inner wall of the pit 12. This parallel arrangement ensures the rationality of the pipeline layout, reduces mutual interference between pipelines, makes construction and installation more convenient, and greatly improves construction efficiency.

[0023] The ring pipe 7 is horizontally positioned and, after connecting to the steel pipe 6, is pre-buried in the machine pit 12 along with the first metal flexible hose 5. Pre-burying these pipes in the machine pit 12 effectively protects them from external environmental influences such as moisture and corrosion, extending their service life. The horizontally positioned ring pipe 7 also exhibits unique advantages in the uniform distribution and transport of dust. When the various brakes 2 of the hydro-generator operate and generate dust, this dust is first sucked into the connected first metal flexible hose 5. The first metal flexible hose 5, utilizing its flexible and bendable characteristics, smoothly guides the dust to the steel pipe 6. The steel pipe 6, with its straight and robust structure, efficiently transports the dust to the ring pipe 7. At this point, the horizontally positioned ring pipe 7 acts as a precise dust distributor. When dust from each brake 2 is collected in the ring pipe 7 through the first metal hose 5 and steel pipe 6, the ring pipe 7 can make full use of its horizontal structure to evenly distribute the dust to the outlet pipe 8. When it reaches the connection point with the outlet pipe 8, it can enter the outlet pipe 8 at a relatively uniform flow rate. This uniform distribution method greatly improves the dust absorption efficiency and avoids problems such as poor absorption or blockage caused by excessive concentration of dust in a certain part.

[0024] like Figure 1 As shown, the outlet pipe 8 is a key connecting component of the entire device. It is horizontally buried in the concrete of the pit 12. On the one hand, being buried in the concrete can provide good protection for the outlet pipe 8, preventing it from being disturbed or damaged by external factors. Whether it is the complex mechanical environment inside the pit or the possible presence of moisture or corrosive gases, it is difficult to cause damage to it, thus extending the service life of the outlet pipe 8. On the other hand, the horizontally set outlet pipe 8 can ensure that the dust flows more smoothly within it, reducing the dust accumulation caused by the pipe tilting or bending.

[0025] One end of the outlet pipe 8 is connected to the ring pipe 7 inside the pit 12. The ring pipe 7 is responsible for collecting and distributing dust in the entire dust absorption system. It gathers dust from various brakes and then smoothly transports the dust outside the pit through its connection with the outlet pipe 8. The other end of the outlet pipe 8 is outside the pit 12. The end of the outlet pipe 8 outside the pit 12 is connected to the second metal hose 9 via a flange 3 and fixing bolts 4. This connection method ensures a tight connection between the outlet pipe 8 and the second metal hose 9, preventing dust leakage, and also facilitates disassembly and replacement when needed, reducing maintenance costs. With simple tools, the flange 3 can be easily separated by loosening the fixing bolts 4, thus disassembling the outlet pipe 8 from the second metal hose 9. If there is a problem with the connection, only the damaged part needs to be replaced, saving a lot of maintenance time and costs, and improving the maintenance efficiency and availability of the equipment.

[0026] The two ends of the second metal hose 9 are horizontally positioned, which makes the connection process simpler and smoother during actual installation. The middle section is inclined downwards. This downward-sloping middle section also utilizes gravity. When dust drawn from the pit 12 enters the second metal hose 9, it is naturally propelled downwards by gravity, flowing smoothly along the inclined pipe towards the filter 10. Gravity significantly reduces the possibility of dust accumulation in the pipe. During the operation of the dust absorption system, if dust accumulates in the pipe, it will not only affect the dust conveying efficiency but may also cause pipe blockage, thus affecting the normal operation of the entire system. The downward-sloping middle section design allows dust to pass through the pipe quickly, avoiding accumulation and ensuring the continuous and stable operation of the system. The horizontally positioned ends facilitate connection to the filter 10 and the vacuum pump 11, improving the overall performance of the system. The end of the second metal hose 9 furthest from the pit 12 is connected to the filter 10 via a flange 3 and fixing bolts 4. One end of the filter 10 is connected to the second metal hose 9, and the other end is connected to the vacuum pump 11. Connecting filter 10 to vacuum pump 11 enables efficient dust absorption and filtration. Vacuum pump 11 provides sufficient negative pressure, causing dust generated in the pit 12 to be drawn into filter 10 sequentially through the first metal hose 5, steel pipe 6, ring pipe 7, outlet pipe 8, and second metal hose 9. Simultaneously, the second metal hose 9, filter 10, and vacuum pump 11 are all located outside the pit 12. This avoids the adverse effects of the harsh environment inside the pit 12, such as high temperature, high humidity, and strong electromagnetic interference, on the equipment, extending its service life. It also facilitates maintenance and cleaning by operators, reducing safety hazards.

[0027] When the brake 2 of the hydro-generator operates and generates dust, this dust is first sucked into the first metal hose 5 connected to it. Because the middle section of the first metal hose 5 slopes downwards, the dust flows downwards along the pipe under the influence of gravity and enters the connected steel pipe 6. The steel pipe 6 guides the dust to a horizontally arranged annular pipe 7. After the annular pipe 7 evenly distributes the dust from the different brakes 2, the dust is then transported to the outside of the turbine pit 12 through the outlet pipe 8.

[0028] Outside the pit 12, dust enters the second metal hose 9 through the outlet pipe 8. Similarly, the downward-sloping design of the middle section of the second metal hose 9 allows the dust to flow smoothly to the filter 10 under gravity. The filter 10 is the core purification component of the entire dust absorption device; it effectively filters out impurities and particulate matter from the dust. The vacuum pump 11 provides power to the entire dust absorption system, generating a strong negative pressure at the other end of the filter 10, allowing dust from the pit 12 to be continuously drawn in and transported to the filter 10 for processing.

[0029] In actual operation, operators can periodically inspect and clean the filter 10 from outside the pit 12. When the filter 10 is full of dust, operators do not need to enter the pit 12; they can simply remove the filter 10 from outside the pit for cleaning or replacement, and then reinstall it. This design, which allows cleaning of the fully loaded dust collection device from outside the pit 12, greatly saves manpower and resources. Entering the pit 12 for work requires specialized protective equipment and personnel, is difficult to perform, and poses numerous safety hazards. This device avoids these problems, reduces safety risks, and improves maintenance efficiency and convenience.

[0030] During installation, the installation positions of each component must first be precisely determined based on the structure of the hydro-generator and the dimensions of the turbine pit 12. The steel pipe 6, ring pipe 7, and first metal flexible hose 5, pre-embedded in the turbine pit 12, must be installed and fixed before the concrete pouring of the turbine pit 12 to ensure accurate positioning. During installation, the design requirements must be strictly followed, and appropriate tools and methods must be used to ensure tight and reliable connections between components. For example, when connecting the flange 3 and the fixing bolts 4, they must be tightened to the specified torque to prevent leakage and loosening.

[0031] For routine maintenance, regularly check the connections of each component for looseness, leaks, or other issues. For filter 10, clean and replace the filter element regularly according to actual usage to ensure its filtration efficiency. Simultaneously, regularly check the operating status of vacuum pump 11 to ensure it can provide sufficient negative pressure for the normal operation of the dust absorption system. Since most components of this device are located outside the pit 12, maintenance personnel can easily inspect and maintain them, greatly reducing the difficulty and cost of maintenance.

[0032] The dust absorption device of this hydro-generator brake 2 has achieved remarkable results in practical applications. It effectively reduces the probability of accidents caused by dust contamination of internal generator parts, improving the safety and stability of hydro-generator operation. Simultaneously, since there is no need to enter the turbine pit 12 for dust collection, it saves significant manpower and resources, reducing safety hazards. Furthermore, the device has a simple structure, reliable long-term operation, convenient on-site commissioning, and easy installation and maintenance, making it highly practical and worthy of widespread application. In hydro-generators of different scales and types, this device can be optimized and applied according to actual conditions, providing strong support for the safe operation of hydro-generators.

[0033] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A dust absorption device for a hydro-generator brake, comprising a brake placed in a sump, characterized in that, A dust collection box is sealed and connected to the lower periphery of the brake. The dust collection box forms a negative pressure cavity and is connected to a first metal hose through a flange. One end of the first metal hose is connected to an outlet pipe through a ring pipe, and the other end of the outlet pipe is connected to a filter through a second metal hose. The outlet pipe is horizontally buried in the concrete of the machine pit, with one end inside the pit and the other end outside the pit. Both the first and second metal hoses are installed at an angle downwards.

2. The dust absorption device for a hydro-generator brake according to claim 1, characterized in that, The brake is mounted on the lower frame support arm and is vertically connected to one end of the first metal flexible hose.

3. The dust absorption device for a hydro-generator brake according to claim 2, characterized in that, The first metal flexible hose is installed vertically at both ends, with a steel pipe connected to one end via a flange.

4. The dust absorption device for a hydro-generator brake according to claim 3, characterized in that, The steel pipes are installed vertically, and the steel pipes, ring pipes, and the first metal flexible hose are pre-embedded in the pit.

5. A dust absorption device for a hydro-generator brake according to claim 4, characterized in that, The top of the steel pipe is connected to the first metal flexible tube, and the bottom is connected to the ring pipe.

6. The dust absorption device for a hydro-generator brake according to claim 1, characterized in that, The outlet pipe is located outside the pit, and one end is connected to a second metal flexible hose via a flange.

7. A dust absorption device for a hydro-generator brake according to claim 1 or 6, characterized in that, The two ends of the second metal hose are set horizontally.

8. A dust absorption device for a hydro-generator brake according to claim 6, characterized in that, The second metal hose has a filter connected to the end furthest from the pit via a flange.

9. A dust absorption device for a hydro-generator brake according to claim 1 or 8, characterized in that, One end of the filter is connected to a second metal hose, and the other end is connected to a vacuum pump.

10. A dust absorption device for a hydro-generator brake according to claim 8, characterized in that, The second metal hose, filter, and vacuum pump are all located outside the pit.

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