Double-input high-speed gear transmission box used for steam turbine

A technology of high-speed gears and steam turbines, applied in belts/chains/gears, mechanical equipment, engine components, etc., can solve problems such as being in the blank, and achieve the effects of reducing impact, compact structure, and cost saving

Active Publication Date: 2012-08-01
JIN TONG LING TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, this type of steam turbine is still in the research and development stage in China, and this type of dual-input, high-speed gearbox is still blank in China

Method used

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  • Double-input high-speed gear transmission box used for steam turbine

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Embodiment 1

[0034] A dual-input high-speed gear box for a MW-class steam turbine comprises: a gear box body, a high-speed input shaft and an output shaft. The high-speed input shaft has two high-speed input shafts with different speeds. The high-speed input shaft I at the high-voltage end has a speed of more than 30,000 rpm, the high-speed input shaft I at the low-voltage end has a speed of more than 7,500 rpm, and the output shaft speed is 3,000 rpm.

[0035] In this embodiment, the high-speed input shaft I is directly connected to the steam turbine, and the high-pressure impeller of the steam turbine is cantilevered on the high-speed input shaft. The high-speed input shaft II is connected with the low-pressure cylinder of the steam turbine through a coupling. The shaft portion of the high-speed input shaft I is provided with a thrust disc, and the end of the output shaft is provided with a thrust bearing.

[0036] The distribution and treatment of the axial force of each axis are as fo...

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PUM

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Abstract

The invention discloses a double-input high-speed gear transmission box used for a steam turbine, and the double-input high-speed gear transmission box is used for a 1.5MW solar double-cylinder condensing steam turbine. The double-input high-speed gear transmission box comprises high-speed input shafts and low-speed input shafts, wherein the revolving speed of a high-speed input shaft I on a high-pressure end is 36000rpm (revolutions per minute); the revolving speed of a high-speed input shaft II on a low-pressure end is 7500rpm; the high-speed input shaft I is directly connected with a high-pressure impeller; the high-pressure impeller cantilever of the steam turbine is supported on the high-speed input shaft I; and the high-speed input shaft II is connected with the low-pressure cylinder of the steam turbine via a coupler. According to the double-input high-speed gear transmission box, the diameter of a gearwheel is drastically reduced, the oil slinging power consumption of the gearis lowered, and the gear box transmission efficiency is improved. A high-pressure impeller end supporting bearing and a box body are respectively provided with a cooling cavity so as to effectively reduce the influence of high-temperature steam on bearing alloy. The axial gap of a high-pressure spindle is not influenced by a low-pressure spindle so as to bring convenience for regulating the assembling gap and improving the performance of a high-pressure impeller. In addition to a solar thermal power generation system, the double-input high-speed gear transmission box also can be used for the fields of industrial waste heat power generation or combined heat and power, gas and steam combined power generation and the like.

Description

technical field [0001] The invention relates to the field of steam turbines, in particular to a gear box device with double high-speed input and low-speed output, and the device is used for a MW-class steam turbine developed as a thermal conversion device for solar thermal power generation. Background technique [0002] As a clean energy source, solar energy has unique advantages such as inexhaustible, pollution-free, and cheap, and has a huge potential market. It will gradually occupy a significant share in the energy consumption structure and become one of the main energy sources in the world. [0003] A solar thermal power generation system usually consists of three parts: a solar heat collection system, a heat storage and heat exchange system, and a thermal power conversion system. The above three systems work at the same time to complete the conversion from light energy to electric energy. However, due to the low steam parameters of the system in the past, and due to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H57/00F16H57/023F01D25/34
Inventor 王中军冯明飞
Owner JIN TONG LING TECH GRP CO LTD
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