Generator set with closed housing
By using a closed outer casing and a carbon powder collection and treatment device, the problems of dust pollution and safety hazards have been solved, achieving safety and environmental protection for the generator set, reducing noise and vibration, and extending its service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHUIFA ELECTRIC POWER ENERGY (ILI) CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-07-07
AI Technical Summary
In existing generator sets, the friction between the carbon brushes and slip rings of the carbon powder causes carbon dust, which pollutes the environment and poses safety hazards. Furthermore, the exposed live parts pose safety risks.
The generator set is enclosed in a closed casing, with an air inlet and an induced draft fan to draw air into the casing. A carbon dust collection and treatment device collects dust and discharges it through an exhaust port. A silencer reduces noise, a vibration damper reduces vibration, and the transparent material facilitates observation.
It improves the safety of generator sets, prevents dust pollution, reduces noise and vibration, and extends service life.
Smart Images
Figure CN224473119U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a generator set, specifically a generator set with a closed outer casing for hydroelectric or thermal power generation. Background Technology
[0002] A generator set is a device that converts energy into electrical energy. For example, a hydroelectric generator set converts water energy into mechanical energy, and then mechanical energy into electrical energy; a thermal power generator set converts heat energy into mechanical energy, and then mechanical energy into electrical energy; a hydroelectric generator set converts the kinetic energy of water into the mechanical energy of the turbine runner by the impact of water flow. The runner is directly coupled to the generator rotor through the main shaft. The rotation of the runner drives the generator rotor to rotate at high speed. When the rotor rotates, its magnetic field continuously cuts the stator windings. The conductors moving in the magnetic field will generate an induced electromotive force, thereby forming alternating current in the stator windings.
[0003] In the engine assembly, because the generator slip rings rotate at high speed with the main shaft, the brush holder assembly is stationary.
[0004] In the generator's brush holder assembly, the carbon brush contacts the surface of the slip ring. During rotation, sliding friction occurs between the brush surface and the slip ring, causing wear and generating a large amount of fine carbon dust. This dust disperses as the generator rotates. The conductive carbon dust reduces the insulation performance of electrical components, easily generating electrical sparks and affecting the safe operation of the generator set. It also shortens the lifespan of the carbon brush and causes heat to build up between the brush surface and the slip ring, raising their temperatures to over 300°C in severe cases. To prevent and treat the hazards of carbon dust, existing technologies use carbon dust collection devices to collect and process the carbon dust generated by brush wear, thus reducing its harmful effects.
[0005] However, in existing generator sets, components such as charged brush holders, carbon brushes, and slip rings are exposed outside the engine main shaft, posing a certain degree of danger. When the high-speed rotating main shaft rotates, it drives the surrounding air to rotate, creating a certain speed of wind and generating noise. Although most of the carbon powder can be collected by the carbon powder collection device, a small amount of carbon powder is scattered everywhere with the wind from the rotating main shaft, becoming difficult to collect and treat, reducing the air quality in the generator room, polluting the environment, and posing safety hazards. Utility Model Content
[0006] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is: how to provide a generator set with a closed outer casing, which encloses the entire generator set inside the casing, firstly to improve the safety performance of the generator set operation, and secondly to prevent carbon dust from being scattered everywhere with the wind of the rotating main shaft, polluting the environment and creating safety hazards.
[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0008] A generator set with a closed outer casing includes a generator body, characterized in that: an outer casing is provided on the generator body, the outer casing 2 enclosing the generator body inside; several air inlets are provided on the outer casing, and exhaust fans are provided outside or inside the air inlets to introduce air into the outer casing; several toner collection and treatment devices are provided inside the outer casing, with one or more exhaust pipes at the air inlet end of the toner collection and treatment devices, and exhaust pipes at the exhaust end of the toner collection and treatment devices discharging gas outward through exhaust ports provided on the outer casing. Thus, this utility model uses an outer casing to surround and enclose the entire generator set, firstly covering the live components, preventing operators from normally contacting these live components, essentially eliminating safety accidents such as electric shock, and improving the safety of generator set operation. At the same time, enclosing toner dust inside the outer casing facilitates collection and treatment, improving toner dust collection and treatment efficiency; moreover, toner dust will not disperse in the air of the generator room, preventing environmental pollution.
[0009] Furthermore, a silencer is installed in the exhaust pipe of the toner collection and processing device. The silencer effectively reduces wind noise and vibration from the toner collection and processing device.
[0010] Furthermore, the generator body includes a brush holder support and a vertical brush holder connecting screw. A vibration damper is installed between the brush holder support and the vertical brush holder connecting screw. The vibration damper effectively reduces the impact of vibration during unit operation on the brush holder, thus reducing carbon brush sparking.
[0011] Furthermore, the outer cover has a cross-section that is circular, elliptical, triangular, or quadrilateral.
[0012] Furthermore, the outer cover is cylindrical in shape, enveloping the generator body from top to bottom. The outer cover can be of various shapes to better match different generator sets, facilitating its installation and overall arrangement in the turbine generator room.
[0013] Furthermore, both the air inlet and the exhaust outlet are located on the top of the outer cover and are spaced apart.
[0014] Furthermore: a dust collection hood is installed at the contact area between the carbon brush and the slip ring of the generator body, which semi-encloses the area where each carbon brush and slip ring are in contact, and the air suction port of the air extraction pipeline is set on the dust collection hood.
[0015] Furthermore: an opening is provided at the top of the outer cover, and a cover fits over the opening.
[0016] Furthermore, the outer cover is partially made of transparent material.
[0017] Furthermore, the outer casing of the area where the carbon brushes of the generator body are located is made of transparent material.
[0018] The generator set with a closed outer casing of this utility model has the following advantages compared with the prior art:
[0019] 1. This utility model adopts a simple outer casing to surround and seal the entire generator set. First, it covers the live parts, such as brush holders, carbon brushes, slip rings, etc., so that operators do not usually come into contact with these live parts, which basically eliminates safety accidents such as electric shock and improves the safety of generator set operation.
[0020] 2. This utility model uses an outer cover to surround and seal the entire generator set, enclosing the carbon powder dust inside the outer cover, which facilitates collection and treatment and improves the efficiency of carbon powder collection and treatment; moreover, the carbon powder will not disperse in the air of the generator room, preventing environmental pollution.
[0021] 3. The fan that blows air into the outer casing can blow cooling air directly onto the heat-generating parts of the generator set, achieving a cooling effect, effectively reducing the overall temperature rise of the generator set, and extending its service life. Attached Figure Description
[0022] Figure 1 This is a front view (sectional view) of the generator set with a closed outer casing according to this utility model.
[0023] Figure 2 This is a top view of the outer casing structure of this utility model;
[0024] Figure 3 This is a schematic diagram of the generator set structure of this utility model with the outer cover removed.
[0025] In the diagram, 1—generator body, 2—outer casing, 3—air inlet, 4—exhaust fan, 5—carbon powder collection and treatment device, 6—exhaust port, 7—exhaust pipe, 8—exhaust port, 9—slip ring, 10—dust hood, 11—silencer, 13—brush holder support, 14—brush holder connecting screw, 15—vibration damper, 16—opening. Detailed Implementation
[0026] 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, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0027] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the terms "horizontal," "vertical," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0028] like Figures 1 to 3As shown in the figure, the generator set with a closed outer casing in this specific embodiment includes a generator body 1, and an outer casing 2 is provided on the generator body 1, which encloses the generator body 1 inside. The outer casing 2 enclosing the generator body 1 has various shapes and structures in cross-section, such as circular, elliptical, triangular, quadrilateral or other polygonal shapes, and its internal cavity is adapted to the geometric dimensions of the generator body 1. As shown in the figure, the outer casing 2 is cylindrical and covers the generator body 1 from top to bottom to enclose it. The enclosure described in this utility model also includes a relative enclosure with necessary small openings on the outer casing 2, or a door that can close the opening, including holes for wires and control lines, inspection holes with inspection doors, observation holes with doors, etc.
[0029] Several air inlets 3 are provided on the outer casing 2. Air from outside the outer casing 2 is introduced into the outer casing 2 through the air inlets 3 to replenish the air inside the outer casing 2, enhance airflow, and provide a cooling effect. As shown in the figure, two air inlets 3 are provided at the top of the outer casing 2. To enhance the airflow effect, an exhaust fan 4 is provided on the outside or inside of the air inlets 3. The exhaust fan 4 introduces air into the outer casing 2 when needed. The exhaust fan 4 located on the outside of the air inlets 3 can also be an air compressor. If the power plant is equipped with an air compressor, the same pipeline as the air compressor can be used to send air into the outer casing 2 through the air inlets 3. An air intake branch pipe can also be provided after the exhaust fan 4. The air outlet of the air intake branch pipe corresponds to the parts of the generator body 1 that generate heat, such as the contact area between the carbon brushes and slip rings of the generator body 1, where high temperatures are generated due to friction or sparking. Directly blowing cooling air onto these heat-generating parts can produce a direct and rapid cooling effect.
[0030] Several toner collection and processing devices 5 are installed inside the outer casing 2. Each toner collection and processing device 5 has one or more air intake ports 6. Each air intake port 6 corresponds to an air extraction pipe, and at least one air extraction pipe's suction port corresponds to the contact area between the carbon brush and the slip ring. This allows toner generated by friction from the carbon brush to be immediately drawn into the air extraction pipe through the suction port, preventing toner from drifting and spreading within the outer casing 2. The exhaust pipe 7 at the exhaust end of the toner collection and processing device 5 discharges the processed and separated toner-containing gas outwards from the outer casing 2 through exhaust ports 8 provided on the outer casing 2. As shown in the figure, the exhaust ports 8 are located at the top of the outer casing 2, and several exhaust ports 8 are evenly spaced from the air inlet 3. To further prevent toner dispersion, a dust collection hood 10 is installed at the contact area between the carbon brushes and the slip rings 9 of the generator body 1, semi-enclosing the area where each carbon brush contacts the slip ring 9. The suction port of the suction pipe of the suction port 6 is located on the dust collection hood 10, which can achieve better toner collection and prevent toner splashing. The toner collection and processing device 5 of this utility model includes a motor and a filter layer, etc., which are prior art and will not be described further here.
[0031] In order to reduce or minimize the noise of the toner collection and treatment device 5 and the exhaust pipe 7, a silencer 11 is installed in the exhaust pipe 7 of the toner collection and treatment device 5. The silencer 11 mainly includes sound-absorbing cotton and a perforated plate, which can reduce noise and weaken vibration. This can be achieved using components from existing technologies.
[0032] The generator body 1 includes a brush holder support 13 and a vertical brush holder connecting screw 14. A vibration damper 15 is provided between the brush holder support 13 and the vertical brush holder connecting screw 14. The vibration damper 15 is made of plastic or rubber with appropriate hardness, which can reduce the impact of vibration on the brush holder, brush holder and carbon brush during generator operation, so that the carbon brush and the slip ring maintain stable contact and reduce carbon brush sparking.
[0033] An opening 16 is provided on the top of the outer cover 2. The opening 16 can be used to hoist related parts when replacing engine-related equipment and components, or as an inspection hole, etc. A cover is used to cover the opening 16 to keep the outer cover 2 sealed.
[0034] The outer cover 2 of this utility model is made of a transparent material, such as plexiglass, in part, so that the internal situation can be observed from the outside of the outer cover 2; in particular, the area where the carbon brushes of the generator body 1 are located is made of a transparent material, so that the condition of each carbon brush can be easily observed from the outside, and the condition of the contact part between the carbon brush and the slip ring can be observed, such as whether sparking occurs, the wear of the carbon brush, etc.
[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model that do not depart from the spirit and scope of this technical solution should be covered within the scope of the claims of this utility model.
Claims
1. A generator set with a closed outer casing, comprising a generator body (1), characterized in that: An outer cover (2) is provided on the generator body (1), and the outer cover (2) encloses the generator body (1) inside; several air inlets (3) are provided on the outer cover (2), and a blower (4) is provided on the outside or inside of the air inlets (3) to introduce air into the outer cover (2); Several toner collection and processing devices (5) are provided inside the outer cover (2). The air inlet of the toner collection and processing device (5) is provided with one or more air extraction ports (6). The exhaust pipe (7) of the exhaust end of the toner collection and processing device (5) discharges the gas out of the outer cover (2) through the exhaust port (8) provided on the outer cover (2).
2. The generator set with a closed outer casing according to claim 1, characterized in that: A silencer (11) is installed in the exhaust pipe (7) of the toner collection and processing device (5).
3. The generator set with a closed outer casing according to claim 1 or 2, characterized in that: The generator body (1) includes a brush holder support (13) and a vertical brush holder connecting screw (14). A vibration damper (15) is provided between the brush holder support (13) and the vertical brush holder connecting screw (14).
4. The generator set with a closed outer casing according to claim 1 or 2, characterized in that: The outer cover (2) has a cross-section that is circular, elliptical, triangular or quadrilateral.
5. The generator set with a closed outer casing according to claim 4, characterized in that: The outer cover (2) is cylindrical in shape and covers the generator body (1) from top to bottom.
6. The generator set with a closed outer casing according to claim 1, characterized in that: The air inlet (3) and the exhaust outlet (8) are both located on the top of the outer cover (2) and are spaced apart.
7. The generator set with a closed outer casing according to any one of claims 1, 2, and 6, characterized in that: A dust collection hood (10) is provided at the contact point between the carbon brush and the slip ring (9) of the generator body (1) to semi-enclose the area where the contact point between each carbon brush and the slip ring (9) is located. The suction port of the suction pipe of the suction port (6) is set on the dust collection hood (10).
8. The generator set with a closed outer casing according to any one of claims 1, 2, and 6, characterized in that: An opening (16) is provided on the top of the outer cover (2), and a cover fits on the opening (16).
9. The generator set with a closed outer casing according to any one of claims 1, 2, and 6, characterized in that: The outer cover (2) is made of transparent material, corresponding to the area where the carbon brush of the generator body (1) is located.
10. The generator set with a closed outer casing according to any one of claims 1, 2, and 6, characterized in that: An air inlet branch pipe is installed after the induced draft fan (4), and the air outlet of the air inlet branch pipe corresponds to the part of the generator body (1) that generates heat.