摘要

依托国家推进河南“国家生物质能示范区”建设，支持秸秆发电、风电、垃圾发电、沼气、余热余压、光伏发电等新能源和可再生能源电源项目建设。《实施意见》还就“督促电力企业履行社会责任，全面有效落实国家节能减排方针、政策”等方面进行了细化和部署，每吨秸秆煤炭的加工费仅为80元左右，运行费用可降1/4以下，比普通工业型煤下降60%以上，廉价秸秆资源的高效利用和代煤作用，是原煤所不能比的；在这样的背景下这就需要大量的玉米秸秆成型机。

冷却系统对于平模设计的经济性和操作性极为重要，在工程系统中，尤其是在平模设计方面保持着非常重要的地位。缺乏工程性的原因或许是在成型过程中的温度分布与流体相关的缺陷相比不明显。冷却系统的不合理设计通常导致两种不期望的结果。其一，冷却和成型周期比预期的要长。其二，贯穿平模的温度梯度明显升高，会导致成型制品的收缩和翘曲变形，还有就是温度升高后会影响结构刚性，就是热硬性受到挑战，因为在成型过程中受力很大，放出的热量非常大，对成型秸秆甚至会直接碳化。为了能够有效地进行操作，冷却系统必须仔细设计，以在不增加成本或复杂程度的情况下控制贯穿平模的热流，并要保持平模的温度恒定。本文就玉米秸秆成型机的冷却系统进行研究设计，通过建立数学模型的方法，设计冷却系统的各个部分，包括对散热器的设计，系统内外管路的设计计算，水泵、冷却风扇、电机的计算选型等。

关键词：生物质能；玉米秸秆成型机；冷却系统；水冷式冷却器

Abstract

Relying on the state to promote Henan "national biomass demonstration zone" construction, support straw power, wind power, garbage power generation, biogas, waste heat and pressure, photovoltaic power generation and other new energy and renewable energy power project construction. "Implementation Opinions" also "supervise the power enterprises to fulfill their social responsibility, comprehensive and effective implementation of the national energy conservation guidelines, policies," and other aspects of the refinement and deployment, per ton of straw coal processing fee is only 80 yuan, operating costs Down less than 1/4, more than 60% of ordinary industrial briquette, cheap straw resources and the efficient use of coal and coal can not be compared; in this context, this requires a lot of corn stalk molding machine.

The cooling system is extremely important for the economy and operation of the die design, and is very important in the engineering system, especially in the die design. The reason for lack of engineering may be that the temperature distribution during the molding process is not as significant as the fluid-related defects. Unreasonable design of the cooling system usually results in two undesirable results. First, the cooling and molding cycles are longer than expected. Second, the temperature gradient across the mold is significantly increased, will lead to shrinkage and warping deformation of molded products, there is the temperature will affect the structural rigidity, is the thermal hardness of the challenge, because in the molding process is very Large, the release of heat is very large, even on the formation of straw can be directly carbonized. In order to be able to operate effectively, the cooling system must be carefully designed to control the heat flow through the die without increasing the cost or complexity and to keep the temperature of the die constant. In this paper, the cooling system of corn stalk molding machine is designed and designed. Through the establishment of the mathematical model, the design of the cooling system is designed, including the design of the radiator, the design and calculation of the internal and external piping, the calculation of the pump, the cooling fan and the motor Selection and so on.

Key words: biomass energy; corn stalk molding machine; cooling system; water-cooled cooler