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Multi-drive structure of primary air fan for thermal power station

A secondary fan and power plant technology, applied in the direction of machines/engines, liquid fuel engines, mechanical equipment, etc., can solve the problems of high-quality energy waste, etc., to improve the utilization rate, reduce throttling loss, and increase operational flexibility Effect

Pending Publication Date: 2019-08-20
HARBIN GUANGHAN POWER TRANSMISSION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention aims to solve the problem that the cold resteam discharged from the steam turbine unit is desuperheated and decompressed in order to meet the parameters required by the heat user, thereby generating a large throttling loss and causing waste of high-quality energy

Method used

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  • Multi-drive structure of primary air fan for thermal power station
  • Multi-drive structure of primary air fan for thermal power station

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Experimental program
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Effect test

specific Embodiment approach 1

[0018] Specific implementation mode 1: Combination figure 1 This embodiment will be described. In this embodiment, the multi-drive structure of the primary fan of the thermal power plant includes a back pressure machine 1, a multi-shaft variable speed clutch 2, an electric motor 3, a primary fan 4, a back pressure machine output end 5, and a multi-shaft Variable speed clutch input terminal A7, multi-axis variable speed clutch input terminal B9, multi-axis variable speed clutch output terminal 8, primary fan input terminal 12, motor output terminal 13 and three couplings 6, back pressure machine 1 is provided with a back pressure machine Output terminal 5, the multi-axis variable speed clutch 2 is provided with a multi-axis variable speed clutch input terminal A7, a multi-axis variable speed clutch input terminal B9 and a multi-axis variable speed clutch output terminal 8. The primary fan 4 is provided with a primary fan input terminal 12 and a motor 3. A motor output terminal 13...

specific Embodiment approach 2

[0021] Specific implementation manner two: combination figure 1 This embodiment is described. In this embodiment, the multi-shaft transmission clutch 2 includes an automatic synchronization clutch 2-1, a first gear 2-2, a second gear 2-3, and a third gear 2-4. The input terminal of 2-1 is connected with the output terminal 5 of the back pressure machine through the coupling 6, the output terminal of the automatic synchronization clutch 2-1 is connected with the second gear 2-3, and the first gear 2-2 is connected with the input terminal of the primary fan 12 is connected by the coupling 6, the third gear 2-4 and the motor output end 13 are connected by the coupling 6, the first gear 2-2 is meshed with the second gear 2-3, and the second gear 2-3 is The three gears 2-4 mesh.

[0022] The multi-shaft variable speed clutch 2 has one output end and two input ends, and can be connected to two driving devices and one load. In some cases, compared to the coaxial arrangement, it can sav...

specific Embodiment approach 3

[0025] Specific embodiment 3: In this embodiment, the coupling 6 is a diaphragm coupling or a diaphragm coupling.

[0026] The shafting equipment is flexibly connected through a diaphragm coupling or a diaphragm coupling, which can absorb the thermal expansion of the rotor during the operation of the equipment, so that the shafting can run in a hot state to ensure the best working condition.

[0027] Other components and connection modes are the same as in the second embodiment.

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Abstract

The invention relates to a multi-drive structure of a primary air fan for a thermal power station, belongs to the field of industrial steam supply energy conservation of the thermal power station, andaims to solve the problems that since cold reheat steam discharged by a turbine unit is subjected to temperature-reduction and pressure-reduction in order to meet the user demand parameters, the larger energy conservation loss is generated, and the waste of high-quality energy is caused. The multi-drive structure of the primary air fan for the thermal power station comprises a back pressure machine, a multi-axis variable-speed clutch, an electromotor, the primary air fan, a back pressure machine output end, a multi-axis variable-speed clutch input end A, a multi-axis variable-speed clutch input end B, a multi-axis variable-speed clutch output end, a primary air fan input end, an electromotor output end and three couplers, wherein the back pressure machine output end and the multi-axis variable-speed clutch input end A are connected through one coupler; the electromotor output end and the multi-axis variable-speed clutch input end B are connected through one coupler; and the multi-axisvariable-speed clutch output end and the primary air fan input end are connected through one coupler. The multi-drive structure of the primary air fan for the thermal power station provided by the invention is mainly applied to energy conservation of the thermal power station.

Description

Technical field [0001] The invention relates to a multi-driving structure of a primary fan of a thermal power plant. It belongs to the field of industrial steam supply and energy saving in thermal power plants. Background technique [0002] The main steam turbine generator set used in thermal power plants not only supplies electricity, but also uses steam turbine extraction or exhaust to meet the heat required for production and life. [0003] Thermal power plants use cold re-steam and hot re-steam to supply steam to the outside. The temperature and pressure of cold re-steam under rated working conditions are higher, which is quite different from industrial steam parameters. It usually needs to be adjusted to Hot users need parameters. Due to the extreme mismatch between the extraction steam parameters and the industrial steam parameters, when the steam is reduced in temperature and pressure, a large throttling loss will be generated and high-quality energy will be wasted. [0004...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D25/02F04D25/06F04D29/054F01D15/08F16H1/22
CPCF04D25/02F04D25/06F04D29/054F01D15/08F16H1/22
Inventor 仇实罗萌曾德龙邓广琳王琦朱振荣周金阳徐巍
Owner HARBIN GUANGHAN POWER TRANSMISSION
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