Fan electric barring gear and power system for tail gas treatment

Abstract

The utility model discloses a fan electric turning gear and a power system for tail gas treatment, and relates to the technical field of kiln tail gas treatment, the fan electric turning gear comprises a motor and a power transmission device; the motor is used for outputting power; the power transmission device comprises a power output end and a power input end, the power input end is used for being connected with a motor shaft, and the power output end is used for being detachably connected with a standby fan main shaft; according to the utility model, the phenomenon of uneven corrosion on the surface of the impeller in the long-time standing process of the standby fan is solved, the risk of single-side corrosion of the impeller of the standby fan is reduced, the operation safety of the standby fan in a severe working condition environment is improved, and the maintenance convenience is increased.

Description

Technical Field

[0001] This utility model relates to the technical field of float glass furnace exhaust gas treatment equipment, and in particular to a fan electric turning gear device and a power system for exhaust gas treatment. Background Technology

[0002] In current industrial kiln exhaust gas treatment systems, the exhaust gas treatment system is a crucial link in ensuring environmentally friendly emissions, and its operational stability directly affects the continuous production capacity of enterprises. The current mainstream treatment process adopts a combination of waste heat boilers and desulfurization and denitrification equipment in series, improving energy utilization efficiency through waste heat recovery while simultaneously achieving pollutant emission reduction standards. In this system, large fans, as the core power unit for exhaust gas transportation, require a redundant configuration of "one in use, one on standby" with periodic switching to ensure uninterrupted production. However, during months of standby operation, fans in a shutdown state are subjected to continuous erosion from acidic components and particulate matter in the kiln exhaust gas, resulting in uneven corrosion on the impeller surface. This unilateral corrosion leads to an imbalance in the impeller's mass distribution, disrupting its original dynamic balance characteristics, and subsequently causing abnormal vibration and increased operating noise upon fan restart, seriously threatening the safe operation of the equipment and the continuity of production. This problem has become a technical bottleneck restricting the long-term stable operation of kiln exhaust gas treatment systems, urgently requiring breakthroughs through technological innovation. Utility Model Content

[0003] The purpose of this utility model is to provide a wind turbine electric turning gear device and a power system for exhaust gas treatment, so as to solve the problems existing in the prior art, reduce the risk of unilateral corrosion of the standby wind turbine impeller, improve the operational safety of the standby wind turbine in harsh working conditions, and increase the convenience of maintenance.

[0004] To achieve the above objectives, this utility model provides the following solution:

[0005] This utility model provides an electric turning gear for a wind turbine, including a drive device and a power transmission device. The drive device is used to output power. The power transmission device includes a first power output end and a first power input end. The first power input end is used to connect to the drive device, and the first power output end is used to detachably connect to the main shaft of a standby wind turbine.

[0006] In some embodiments, the drive device includes a motor and a reducer; the reducer includes a second power output terminal and a second power input terminal, the second power output terminal is connected to the first power input terminal, and the second power input terminal is connected to the motor shaft of the motor.

[0007] In some embodiments, the power transmission device is a sprocket drive system.

[0008] In some embodiments, the sprocket drive system includes a driving sprocket, a driven sprocket, and a chain, wherein the driving sprocket and the driven sprocket are connected by the chain drive, and the driven sprocket is an input / output terminal.

[0009] In some embodiments, the driven sprocket includes two first semi-circular sprockets, which are symmetrically engaged with the main shaft of the standby fan, and are detachably connected when engaged with the main shaft; the driving sprocket includes two second semi-circular sprockets, the second power output end is a shaft, and the two second semi-circular sprockets are symmetrically engaged with the second power output end, and are detachably connected when engaged with the second power output end.

[0010] In some implementations, the driving sprocket is a small sprocket and the driven sprocket is a large sprocket.

[0011] In some embodiments, the two symmetrical semi-circular sprocket structures of the driving sprocket and the driven sprocket are fixedly connected by bolts.

[0012] In some embodiments, the motor is a three-phase asynchronous motor with a rated power of less than 2kW; the reducer is a cycloidal pinwheel reducer.

[0013] In some embodiments, the drive device is fixedly mounted on an external support via a metal bracket.

[0014] This utility model also provides a power system for exhaust gas treatment, including a standby fan, a running fan, and the electric turning gear device for the fan as described above.

[0015] The present invention achieves the following technical advantages over the prior art:

[0016] The electric turning gear device for a fan and the power system for exhaust gas treatment provided by this utility model include a motor and a power transmission device. The motor is used to output power. The power transmission device includes a power output end and a power input end. The power input end is used to connect to the motor shaft, and the power output end is used to detachably connect to the main shaft of the standby fan. Therefore, the electric turning gear device for a fan provided by this utility model can drive the standby fan to rotate, avoiding the standby fan from being idle for a long time. This solves the problem of uneven corrosion on the impeller surface of the standby fan during long-term idle time, reduces unilateral corrosion of the impeller, improves equipment operation safety, and increases maintenance convenience. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A front view of the electric turning gear device for a fan in some embodiments;

[0019] Figure 2 A side view of the electric turning gear device for a fan in some embodiments;

[0020] Figure 3 A front view of the driven sprocket of the electric turning gear for a fan in some embodiments;

[0021] Figure 4 A side view of the driven sprocket of the electric turning gear for a fan in some embodiments;

[0022] In the diagram: 1-Standby fan main shaft; 2-Driven sprocket; 21-Bolt; 3-Drive sprocket; 4-Chain; 5-Drive device; 51-Motor; 52-Reducer; 6-Metal bracket. Detailed Implementation

[0023] 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.

[0024] The purpose of this utility model is to provide a wind turbine electric turning gear device and a power system for exhaust gas treatment, so as to solve the problems existing in the prior art, reduce the risk of unilateral corrosion of the standby wind turbine impeller, improve the operational safety of the standby wind turbine in harsh working conditions, and increase the convenience of maintenance.

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Example 1

[0027] Combination Figures 1 to 4This embodiment provides a wind turbine electric turning device, including a drive device 5 and a power transmission device. The drive device 5 is used to output power. The power transmission device includes a first power output end and a first power input end. The first power input end is used to connect with the drive device 5, and the first power output end is used to detachably connect with the standby wind turbine main shaft 1.

[0028] The electric turning device for the fan provided in this embodiment transmits the power output from the drive device 5 to the main shaft 1 of the standby fan through the power transmission device, thereby driving the main shaft 1 of the standby fan to rotate. This reduces the situation of one-sided corrosion of the impeller caused by the standby fan being idle for a long time, and improves the safety of equipment operation. At the same time, it should be noted that when the standby fan is switched to the main fan, the power output end needs to be removed from the main shaft of the standby fan in advance so that the standby fan can work normally as the main fan.

[0029] In some embodiments, the drive device includes a motor 51 and a reducer 52; the reducer 52 includes a second power output terminal and a second power input terminal, the second power output terminal is connected to the first power input terminal, and the second power input terminal is connected to the motor shaft of the motor 51.

[0030] The driving device in this embodiment includes a motor 51 and a reducer 52. The power of the motor 51 is input to the reducer 52, and after being reduced by the reducer 52, it is output to the power transmission system, thereby reducing the rotation speed of the standby fan when it is in standby mode.

[0031] In some embodiments, the power transmission device is a sprocket drive system.

[0032] This embodiment uses a sprocket drive system as the power transmission device, which has high transmission efficiency, long transmission distance and simple structure; some examples may also use a sprocket drive system as the power transmission device, all of which are within the protection scope of this application, such as belt drive system or worm gear drive system.

[0033] In some embodiments, the sprocket drive system includes a driving sprocket 3, a driven sprocket 2, and a chain 4. The driving sprocket 3 and the driven sprocket 2 are connected by the chain 4, and the driven sprocket 2 is the input / output end.

[0034] In some embodiments, the driven sprocket 2 includes two first semi-circular sprockets, which are symmetrically engaged with the main shaft 1 of the standby fan, and can be detachably connected when engaged with the main shaft; the driving sprocket 3 includes two second semi-circular sprockets, with the second power output end being a shaft, and the second semi-circular sprockets can be symmetrically engaged with the second power output end, and can be detachably connected when engaged with the second power output end.

[0035] This embodiment provides a structural feature of a sprocket. The sprocket in this application adopts two symmetrical semi-circular ring sprockets and is a split structure. When the fan switches from standby to active mode, there is no need for complex disassembly tools or cumbersome disassembly procedures. The sprocket can be quickly separated and disassembled simply by removing the fixing components connecting the two semi-circular ring sprockets. Compared with traditional integral sprockets, this structure significantly reduces the workload and time cost of disassembly, significantly improves equipment switching efficiency, effectively reduces the risk of equipment damage caused by difficult disassembly, and also greatly facilitates maintenance and repair work, ensuring the fan can be quickly put into operation and improving the emergency response capability and operational reliability of the entire system.

[0036] In some embodiments, the driving sprocket 3 is a small sprocket, and the driven sprocket 2 is a large sprocket, with the number of teeth and pitch circle diameter of the large sprocket being larger than those of the small sprocket.

[0037] In this embodiment, a small sprocket is used as the driving sprocket 3, and a large sprocket is used as the driven sprocket 2. According to the principle of sprocket drive, for every revolution of the driving sprocket 3, the driven sprocket 2 rotates by less than one revolution, thus achieving a speed reduction effect. Simultaneously, according to the principle of torque balance, with a constant power, a decrease in rotational speed will increase torque, enabling smooth operation at a lower speed.

[0038] In some embodiments, the two symmetrical semi-circular sprocket structures of the driving sprocket 3 and the driven sprocket 2 are fixedly connected by bolts 21.

[0039] This embodiment provides a specific connection method for a semi-circular ring sprocket structure. Rectangular plates are set at both ends of the semi-circular groove, parallel to the diameter of the semi-circular ring sprocket. Each rectangular plate is provided with through holes. By passing bolts 21 through these through holes and tightening them with nuts, a stable connection between the two semi-circular ring sprocket structures is achieved. The bolt 21 connection method facilitates installation and disassembly, and enables quick maintenance and replacement operations, resulting in high work efficiency. In some examples, connection methods other than bolt 21 connection can also be used, such as welding and riveting, all of which are within the protection scope of this application.

[0040] In some embodiments, motor 51 is a three-phase asynchronous motor with a rated power of less than 2kW; reducer 52 is a cycloidal pinwheel reducer.

[0041] In this embodiment, since the purpose of driving the standby fan to rotate is only to avoid one-sided corrosion of the standby fan impeller due to excessive static time, it is only necessary to drive the impeller to rotate at a low speed. Based on this, the motor 51 provided in this embodiment is a three-phase asynchronous motor with a rated power of less than 2kW, preferably 0.75kW, and is used in conjunction with a cycloidal pinwheel reducer to reduce the rotation speed of the standby fan.

[0042] The solution provided in this embodiment can reduce energy consumption and achieve the purpose of driving the impeller to rotate at a low speed. The specific reasons are as follows: Since the rated power of the drive motor of the backup fan in the prior art is relatively large, it is difficult to drive the backup fan to rotate at a low speed. If the drive motor 51 of the backup fan is directly used to drive the impeller of the backup fan, it will lose the meaning of "backup" and consume a lot of energy. However, by using a low-power three-phase asynchronous motor 51 with a rated power much lower than that of the backup fan drive motor, combined with a cycloidal pinwheel reducer 52 to drive the impeller to rotate, energy consumption can be effectively reduced, which is in line with the concept and requirements of low carbon and environmental protection, and can achieve the purpose of driving the backup fan to rotate at a low speed, thereby achieving the purpose of "backup".

[0043] In some embodiments, the drive device 5 is fixedly mounted on an external support via a metal bracket 6.

[0044] This embodiment provides a method for fixing the drive device 5. The metal bracket 6 has high strength and rigidity, which can provide reliable support for the drive device 5, ensure that the drive device 5 maintains a stable position during operation, reduce displacement and shaking caused by factors such as vibration and impact, and ensure the normal operation and transmission accuracy of the drive device 5. It is understood that, in addition to the example in this application, other methods for fixing the drive device 5 can also be used, such as fixing the drive device 5 directly to an external support.

[0045] Example 2

[0046] This embodiment provides a power system for exhaust gas treatment, including a standby fan, a running fan, and the electric turning gear device for the fan in Embodiment 1.

[0047] Example 2 has all the advantages of Example 1, and will not be repeated here.

[0048] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0049] It should be noted that the structures, proportions, sizes, etc., depicted in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0050] It should be noted that, for those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all changes falling within the meaning and scope of the equivalents of the claims be included within this utility model.

[0051] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A fan electric turning gear device, characterized in that: include Drive unit, used to output power; The power transmission device includes a first power output end and a first power input end. The first power input end is used to connect to the drive device, and the first power output end is used to detachably connect to the main shaft of the standby fan.

2. The electric turning gear device for a wind turbine according to claim 1, characterized in that: The drive device includes a motor and a reducer; the reducer includes a second power output end and a second power input end, the second power output end is connected to the first power input end, and the second power input end is connected to the motor shaft of the motor.

3. The electric turning gear device for a wind turbine according to claim 2, characterized in that: The power transmission device is a sprocket drive system.

4. The electric turning gear device for a wind turbine according to claim 3, characterized in that: The sprocket drive system includes a driving sprocket, a driven sprocket, and a chain. The driving sprocket and the driven sprocket are connected by the chain drive. The driving sprocket is the power input end, and the driven sprocket is the power output end.

5. The electric turning gear device for a wind turbine according to claim 4, characterized in that: The driven sprocket includes two first semi-circular sprockets, which are symmetrically engaged with the main shaft of the standby fan, and are detachably connected when engaged with the main shaft; the driving sprocket includes two second semi-circular sprockets, with the second power output end being a shaft, and the two second semi-circular sprockets are symmetrically engaged with the second power output end, and are detachably connected when engaged with the second power output end.

6. The electric turning gear device for a wind turbine according to claim 5, characterized in that: The driving sprocket is a small sprocket, and the driven sprocket is a large sprocket.

7. The electric turning gear device for a wind turbine according to claim 6, characterized in that: The two symmetrical semi-circular sprocket structures of the driving sprocket and the driven sprocket are fixedly connected by bolts.

8. The electric turning gear device for a wind turbine according to claim 2, characterized in that: The motor is a three-phase asynchronous motor with a rated power of less than 2kW; the reducer is a cycloidal pinwheel reducer.

9. The electric turning gear device for a wind turbine according to claim 1, characterized in that: The drive device is fixedly mounted on an external support body via a metal bracket.

10. A power system for exhaust gas treatment, comprising a standby fan, a running fan, and an electric turning gear device for the fan as described in any one of claims 1 to 9.

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