Generator wind circulation filtering cooler

Abstract

The utility model discloses an electric generator wind circulation filtering cooler which comprises a wind collecting cover and a centrifugal fan, the wind collecting cover is arranged in an inner cavity of an electric generator in a covering mode, the side wall of the wind collecting cover is provided with an exhaust port and an air inlet, the centrifugal fan is arranged in the exhaust port, the air inlet is provided with filtering cotton and a dust removing unit, and the filtering cotton is connected with the wind collecting cover through a vibration unit. According to the wind circulation filtering cooler of the generator, the wind collecting cover and the centrifugal fan are utilized, after dust in external air is filtered through the filter cotton, clean airflow enters the inner cavity of the generator from the air outlet to cool the inner cavity of the generator, high-temperature air is pumped out through the wind collecting opening of the centrifugal fan, the heat dissipation effect of the generator is guaranteed, and the service life of the generator is prolonged. Meanwhile, pulse high-pressure air flow is blown out to the filter cotton through the air blowing opening, dust accumulated on the surface of the filter cotton is blown away, the support and the filter cotton move along with the pulse air flow to generate vibration in cooperation with the spring, and dust on the filter screen can fall off easily.

Description

Technical Field

[0001] The utility model relates to a generator cooling technology, in particular to a generator air circulation filter cooler. Background Art

[0002] A generator is a mechanical device that converts mechanical energy into electrical energy. It is driven by a turbine, steam turbine, diesel engine or other power machinery, and converts the energy generated by water flow, air flow, fuel combustion or nuclear fission into mechanical energy and transmits it to the generator, which then converts it into electrical energy. During the power generation process of the generator, a large amount of heat will be generated due to the mechanical drive, which needs to be cooled and dissipated by a cooling device.

[0003] The existing generator cooling device adopts an air circulation filter cooler, which mainly uses a wind collecting hood to block the external environment, guides the external air to enter the generator cavity after passing through the filter screen for dust removal, and provides negative pressure power through the exhaust fan to discharge the cooled high-temperature gas. However, the working environment of the existing generator cooling device is generally an industrial and mining site, where there are a lot of impurities such as dust, which are very easy to adhere to and accumulate on the outer surface of the filter screen, and even clog the filter holes of the filter screen, causing the air flow of the filter screen to decrease and the filtration efficiency to decrease, resulting in workers often having to replace the filter screen, which is time-consuming and labor-intensive. Utility Model Content

[0004] In order to solve the defects of the prior art mentioned above, the utility model provides a generator air circulation filter cooler, which can use airflow to backwash the filter and remove dust on the outer surface of the filter by spring vibration.

[0005] To achieve the above technical objectives, the utility model adopts the following technical solutions: a generator wind circulation filter cooler, comprising a wind collecting hood and a centrifugal fan, the wind collecting hood is arranged in the inner cavity of the generator, the side wall of the wind collecting hood is provided with an exhaust port and a plurality of air inlets, the centrifugal fan is arranged in the exhaust port, the air inlet is provided with filter cotton and a dust removal unit for jetting dust to the filter cotton, the filter cotton is connected to the wind collecting hood through a vibration unit; the dust removal unit comprises an air blowing port arranged at the top and bottom of the air inlet and an air storage tank connected to the air blowing port, the air storage tank is arranged on the top of the wind collecting hood; the vibration unit comprises a bracket for supporting the filter cotton, connecting blocks are fixed at the four corners of the bracket, and the connecting block is sleeved on the telescopic assembly.

[0006] Preferably, the air inlet is protruded toward the filter cotton, and the bracket is provided with a cover plate that fits with the outer wall of the protrusion on the side facing the air inlet.

[0007] Preferably, the inner wall of the cover plate is provided with a rubber sealing strip, and the rubber sealing strip is arranged between the inner wall of the cover plate and the outer wall of the protrusion.

[0008] Preferably, the air collecting hood includes four side walls, the exhaust port is arranged on one of the side walls, and the other three side walls are each provided with a plurality of air inlets.

[0009] Preferably, the bottom wall of the air collecting hood is provided with an air collecting port connected to the return air port of the generator cavity, the air collecting port is connected to the exhaust port, air outlets connected to the generator cavity are provided on both sides of the air collecting port, and grilles are provided on the air outlets.

[0010] Preferably, the telescopic assembly includes a guide rod and a spring sleeved on the guide rod, one end of the guide rod is fixed to the side wall of the wind collecting hood, the other end of the guide rod passes through the connecting block, one end of the spring is fixed to the wind collecting hood, and the other end of the spring abuts against the connecting block.

[0011] Preferably, a threaded hole and a bolt matched with the threaded hole are provided at the end of the guide rod, and the bolt restricts the connecting block to the guide rod.

[0012] In summary, the utility model has achieved the following technical effects:

[0013] 1. The utility model of the wind circulation filter cooler for the generator uses a wind collecting hood and a centrifugal fan, so that the external air passes through the filter cotton to filter the dust, enters the wind collecting hood through the air inlet, and passes through the grille to prevent debris from entering the inner cavity of the generator. The clean air flows into the inner cavity of the generator from the air outlet to cool the inner cavity of the generator, and then the centrifugal fan provides negative pressure power, so that the air collecting vent draws out the high-temperature air in the inner cavity of the generator and discharges it from the exhaust port; it not only ensures the heat dissipation effect of the generator, but also prevents dust from entering the inner cavity of the generator, thereby ensuring the normal and safe use of the generator.

[0014] 2. The utility model of the generator air circulation filter cooler adopts a blowing port to blow out pulsed high-pressure airflow to the filter cotton, so as to blow away the dust accumulated on the surface of the filter cotton. At the same time, with the spring, the bracket and the filter cotton are moved with the pulsed airflow to generate vibration, which is beneficial to the dust on the filter net to fall off, and then the dust on the outer surface of the filter cotton is removed, so as to ensure the air flow of the filter cotton and maintain the filtering efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the wind circulation filter cooler of the generator of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the wind circulation filter cooler of the generator of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the filter cotton of the generator air circulation filter cooler of the utility model;

[0018] Explanation of the reference numerals in the drawings in the specification: 1. air collecting hood; 2. filter cotton; 3. grille; 4. air collecting port; 5. exhaust port; 6. centrifugal fan; 7. air storage tank; 8. air blowing port; 9. air inlet; 10. limit cover; 11. bracket; 12. connecting block; 13. guide rod; 14. spring; 15. bolt. DETAILED DESCRIPTION

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0020] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] Embodiment 1:

[0026] like Figure 1-2 As shown, a generator wind circulation filter cooler includes an air collecting hood 1 and a centrifugal fan 6. The air collecting hood 1 is arranged in the inner cavity of the generator. The air collecting hood 1 includes four side walls, an exhaust port 5 is arranged on one of the side walls, and a plurality of air inlets 9 are arranged on the other three side walls; the centrifugal fan is arranged in the exhaust port 5, and the air inlet 9 is provided with filter cotton and a dust removal unit for jetting dust to the filter cotton, and the filter cotton is connected to the air collecting hood 1 through a vibration unit; the bottom wall of the air collecting hood 1 is provided with an air collecting port 4 connected with the return air port of the inner cavity of the generator, and the air collecting port 4 is connected with the exhaust port 5, and air outlets connected with the inner cavity of the generator are arranged on both sides of the air collecting port 4, and a grille 3 is provided on the air outlet.

[0027] Working principle: by using the air collecting hood 1 and the centrifugal fan 6, the external air passes through the filter cotton to filter the dust, enters the air collecting hood 1 through the air inlet 9, and passes through the grille 3 to prevent debris from entering the generator cavity. The clean air flows into the generator cavity from the air outlet to cool the generator cavity. Then, the centrifugal fan provides negative pressure power, so that the air collecting vent draws out the high-temperature air in the generator cavity and discharges it from the exhaust port. This not only ensures the heat dissipation effect of the generator, but also prevents dust from entering the generator cavity, ensuring the normal and safe use of the generator.

[0028] In order to facilitate the installation of the bracket 11 and improve the sealing performance between the bracket 11 and the air inlet 9, the air inlet 9 is raised toward the filter cotton side, and the bracket 11 is provided with a cover plate that fits with the raised outer wall on the side facing the air inlet 9; a rubber sealing strip is provided on the inner wall of the cover plate, and the rubber sealing strip is arranged between the inner wall of the cover plate and the raised outer wall.

[0029] like Figure 3As shown, the dust removal unit includes an air blowing port 8 arranged at the top and bottom of the air inlet 9 and an air storage tank 7 connected to the air blowing port 8, and the air storage tank 7 is arranged on the top of the wind collecting hood 1; the vibration unit includes a bracket 11 for supporting the filter cotton, and connecting blocks 12 are fixed at the four corners of the bracket 11, and the connecting block 12 is sleeved on the telescopic assembly; the telescopic assembly includes a guide rod 13 and a spring 14 sleeved on the guide rod 13, one end of the guide rod 13 is fixed to the side wall of the wind collecting hood 1, and the other end of the guide rod 13 passes through the connecting block 12, one end of the spring 14 is fixed to the wind collecting hood 1, and the other end of the spring 14 is against the connecting block 12.

[0030] In order to prevent the connection block 12 from being separated from the guide rod 13 , a threaded hole and a bolt 15 matching the threaded hole are provided at the end of the guide rod 13 . The bolt 15 fixes the connection block 12 on the guide rod 13 .

[0031] The air port 8 is used to blow out a pulsed high-pressure airflow to the filter cotton to blow away the dust accumulated on the surface of the filter cotton. At the same time, with the spring 14, the bracket 11 and the filter cotton are moved and vibrated as the pulsed airflow moves, which is beneficial for the dust on the filter net to fall off, and then the dust on the outer surface of the filter cotton is removed, thereby ensuring the air flow rate of the filter cotton and maintaining the filtration efficiency.

[0032] The above description is only a preferred implementation mode of the present invention, and does not limit the present invention in any form. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A generator air circulation filter cooler, characterized in that: It includes an air collecting hood and a centrifugal fan, wherein the air collecting hood is arranged in the inner cavity of the generator, the side wall of the air collecting hood is provided with an exhaust port and a plurality of air inlets, the centrifugal fan is arranged in the exhaust port, the air inlet is provided with filter cotton and a dust removal unit for jetting dust on the filter cotton, and the filter cotton is connected to the air collecting hood through a vibration unit; The dust removal unit includes air blowing ports arranged at the top and bottom of the air inlet and an air storage tank connected to the air blowing ports, and the air storage tank is arranged at the top of the air collecting hood; The vibration unit comprises a bracket for supporting filter cotton, and connecting blocks are fixed at four corners of the bracket, and the connecting blocks are sleeved on the telescopic component.

2. A generator air circulation filter cooler according to claim 1, characterized in that: The air inlet is protruded toward the filter cotton, and the bracket is provided with a cover plate which is in contact with the outer wall of the protrusion toward the air inlet.

3. A generator air circulation filter cooler according to claim 2, characterized in that: The inner wall of the cover plate is provided with a rubber sealing strip, and the rubber sealing strip is arranged between the inner wall of the cover plate and the outer wall of the protrusion.

4. The generator air circulation filter cooler according to claim 1, characterized in that: The air collecting hood comprises four side walls, the exhaust port is arranged on one of the side walls, and the other three side walls are each provided with a plurality of air inlets.

5. The generator air circulation filter cooler according to claim 1, characterized in that: The bottom wall of the air collecting hood is provided with an air collecting port connected to the return air port of the generator cavity, the air collecting port is connected to the exhaust port, both sides of the air collecting port are provided with air outlets connected to the generator cavity, and the air outlets are provided with grilles.

6. The generator air circulation filter cooler according to claim 1, characterized in that: The telescopic assembly includes a guide rod and a spring sleeved on the guide rod, one end of the guide rod is fixed to the side wall of the wind collecting hood, the other end of the guide rod passes through the connecting block, one end of the spring is fixed to the wind collecting hood, and the other end of the spring abuts against the connecting block.

7. The generator air circulation filter cooler according to claim 6, characterized in that: The end of the guide rod is provided with a threaded hole and a bolt matched with the threaded hole, and the bolt limits the connecting block on the guide rod.

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