Self-driven type rotary tillage system based on straw combustion

A straw, self-propelled technology, applied in the fields of farming equipment, steam engine devices, machines/engines, etc., can solve the problems of high transportation cost, troublesome use by users, difficulty in purchasing straw fuel, etc., and achieve the effect of protecting the ecological environment and improving the utilization rate.

Inactive Publication Date: 2016-12-07
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a small-scale integrated self-driven rotary tillage system based on straw combustion for power generation, which is a biomass solid fuel thermoelectric conversion system, and a process of dedusting the ash and high-temperature flue gas generated by straw combustion through an ash burying device The generated soot particles re-enter the biological chain for recycling, and can be used on-site to generate electricity and bring additional benefits. A large area of ​​raw material storage is needed to reduce the phenomenon of open straw burning, protect the ecological environment, and promote the sustainable development of agriculture

Method used

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  • Self-driven type rotary tillage system based on straw combustion
  • Self-driven type rotary tillage system based on straw combustion
  • Self-driven type rotary tillage system based on straw combustion

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Embodiment 1

[0022] like figure 1As shown, the present invention is a thermoelectric conversion system that utilizes the heat energy generated by straw combustion to generate electricity to drive a rotary tiller. Electronic system, combustion smoke purification subsystem, rotary tillage subsystem, power storage and power dispatching subsystem. When the drying equipment is configured, the harvested straw and root stubble pass through the dryer to reduce the moisture content and are blown to the combustion furnace, where they are burned in the combustion furnace to heat the working fluid to generate steam; if there is no drying equipment, the harvested The last straw and root stubble are burned directly in the combustion furnace. The air consumed for combustion comes from the condensed air in the micro steam cycle power generation sub-system. This embodiment is a two-stage power generation system: a combined power generation sub-system of a micro steam turbine first and a screw expander se...

Embodiment 2

[0024] This embodiment is simplified on the basis of Embodiment 1, and a first-stage power generation system is adopted in the micro-steam cycle power generation sub-system: the heat engine equipment only uses a micro-steam turbine ( figure 2 ) or screw expander ( image 3 ). The screw expander requires inlet steam pressure ≥ 0.3MPa, temperature ≤ 300°C, 0.2MPa ≤ inlet and outlet pressure difference ≤ 1.0MPa, it is a machine that uses saturated steam differential pressure to generate electricity. In the micro-steam cycle power generation system, the steam generated by the heating of the combustion furnace only flows through the micro-steam turbine or screw expander, and the output shaft work drives the generator set to convert mechanical energy into electrical energy, and the outlet pressure of the screw expander is slightly higher than atmospheric pressure , effectively ensuring the tightness of the entire system.

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Abstract

The invention discloses a self-driven type rotary tillage system based on straw combustion, belonging to the field of agricultural and energy-power machinery. The invention belongs to a scheme of a system level and provides an effective way of driving a rotary tiller through electric power generated by utilizing straw combustion. By applying an advanced combustion technology for combustion of crop straws and root stubbles, flue gas is filtered; heat energy is released; a certain working medium is heated to generate steam; a turbine or a screw expander is driven to work and drives an engine generator to generate electric power; the electric power is provided for operation of a variety of power machinery in the system; meanwhile, centralized dedusting and dust-burying treatment to combustion products are realized. The system provided by the invention turns rich straw resources in China into the valuable from the waste, realizes effective treatment of the crop straws and root stubbles, effectively solves a plurality of problems of environmental pollution brought by open burning of straws, and realizes self-sufficiency of electric power resources for the rotary tiller and other electrical equipment in the system. In addition, the system can also be used as a distributed mobile power supply system in remote areas.

Description

technical field [0001] The invention belongs to the field of agricultural power machinery, and in particular relates to a system for driving a rotary tiller by burning straw to generate electricity. Background technique [0002] Crop straw is a huge amount of renewable resources in nature. China is a large agricultural country, and our country is very rich in straw resources. According to statistics, the annual output of crop straw in our country reaches as much as 700 million tons. As a by-product of agricultural production, straw has the characteristics of large output, wide distribution and stable supply, and is an important agricultural resource. About 145 million tons of existing straw are used as livestock feed, 91 million tons are used as fertilizer for returning to the field, 140 million tons are used as industrial raw materials, and 180 million tons are used as traditional living fuel for farmers. Wasted biomass resources, but also caused serious environmental poll...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): A01B33/00F01K11/00F01K11/02
CPCA01B33/00F01K11/00F01K11/02
Inventor罗翔翟骊景全永凯袁玉斌徐国强张翠珍
OwnerBEIHANG UNIV