【摘要】：流體在管路中流動時大多處于湍流狀態(tài),在傳輸過程中存在著能量浪費(fèi)的現(xiàn)象,再加上現(xiàn)階段國內(nèi)水泵存在著運(yùn)行效率不高等問題,為了更好地提高能源資源利用效率,需要研究開發(fā)流體在傳輸過程中的節(jié)能裝置,加強(qiáng)節(jié)能能力建設(shè)。然而在新產(chǎn)品開發(fā)過程中,開發(fā)成功率較低。據(jù)對國外700個工業(yè)企業(yè)的調(diào)查,新產(chǎn)品開發(fā)綜合成功率僅為65%。因此,研究產(chǎn)品開發(fā)方法,對于成功開發(fā)新產(chǎn)品將具有重要的現(xiàn)實(shí)意義。 本文較系統(tǒng)地分析了TRIZ理論和仿生學(xué)特點(diǎn)以及它們解決問題的一般步驟,找出了它們的相同點(diǎn)和不同點(diǎn),分析了它們的可結(jié)合性,提出了這兩種方法結(jié)合的路徑,并最終實(shí)現(xiàn)了仿生學(xué)與TRIZ理論發(fā)明原理的結(jié)合。兩者的結(jié)合對TRIZ理論和仿生學(xué)方法的發(fā)展和應(yīng)用有著及其重要的作用,仿生學(xué)的一些原理充實(shí)、深化了TRIZ理論的發(fā)明原理,TRIZ理論中的沖突解決原理為仿生學(xué)提供更完整的理論基礎(chǔ)。兩者的結(jié)合可以為產(chǎn)品設(shè)計提供明確的思路,提高產(chǎn)品開發(fā)的成功率。 在此方法的指導(dǎo)下,結(jié)合工程實(shí)際設(shè)計出了一套流體傳輸節(jié)能裝置:水泵能效優(yōu)化裝置和新型旋啟式節(jié)能止回閥。利用FLUENT軟件對該裝置進(jìn)行CFD模擬實(shí)驗(yàn),找出了其內(nèi)部流場參數(shù)速度、壓力、流量等的變化規(guī)律。 實(shí)驗(yàn)證明:在水泵出水口加上該能效優(yōu)化裝置后,水流速度變得均勻且方向一致,減少了由于不規(guī)則湍流運(yùn)動帶來的水質(zhì)點(diǎn)之間碰撞及能量損失,雖然出口處流量有所減少,但提高了水泵的揚(yáng)程,通過與普通管道的功率進(jìn)行比較,驗(yàn)證了其節(jié)能性能。通過現(xiàn)場試驗(yàn),效果良好,由此證明,該能效優(yōu)化裝置在水流存在明顯不規(guī)則湍流的情況下,能夠起到一定的節(jié)能作用。 止回閥作為流體傳輸管網(wǎng)上必不可少的部件,其性能影響著傳輸過程中能量的損失。針對傳統(tǒng)止回閥存在擋水面積較大,流阻系數(shù)大的缺點(diǎn),設(shè)計出一種新型旋啟式多瓣止回閥,當(dāng)閥瓣打開時,閥瓣位于流道側(cè)面,有效減小了擋水面積,采用四個閥瓣,可以有效降低閥瓣關(guān)閉時的行程。通過FLUENT仿真實(shí)驗(yàn),證明該止回閥當(dāng)閥門打開時,閥門的流阻系數(shù)相對于絕大多數(shù)止回閥來說是相當(dāng)?shù)偷?說明該止回閥的流通能力很強(qiáng),因而能起到一定的節(jié)能作用。
[Abstract]:Most of the fluid flows in the pipeline in turbulent state, there is a waste of energy in the process of transmission, coupled with the current domestic pump operation efficiency is not high and so on, in order to improve the efficiency of energy resources utilization, It is necessary to study and develop energy-saving devices in the process of fluid transmission and strengthen the construction of energy-saving capacity. However, in the process of new product development, the success rate of development is low. According to the survey of 700 foreign industrial enterprises, the comprehensive success rate of new product development is only 65%. Therefore, the study of product development methods will be of great practical significance for the successful development of new products. This paper systematically analyzes the characteristics of TRIZ theory and bionics as well as their general steps to solve problems, finds out their similarities and differences, analyzes their combinability, and puts forward the path of combining the two methods. Finally, the combination of bionics and TRIZ theory is realized. The combination of the two plays an important role in the development and application of TRIZ theory and bionics method. Some principles of bionics are enriched and the invention principle of TRIZ theory is deepened. The conflict resolution principle in TRIZ theory provides a more complete theoretical basis for bionics. The combination of the two can provide a clear way of thinking for product design and improve the success rate of product development. Under the guidance of this method, a set of fluid transmission energy saving device is designed according to the engineering practice: water pump energy efficiency optimization device and a new type of rotary energy saving check valve. The CFD simulation experiment of the device is carried out by using FLUENT software, and the variation laws of velocity, pressure and flow rate of the internal flow field parameters are found out. The experimental results show that when the pump outlet is added with the energy efficiency optimization device, the flow velocity becomes uniform and the direction is consistent, which reduces the collision and energy loss between water quality points due to irregular turbulent motion, although the flow rate at the outlet is reduced. However, the lift of the pump is improved, and its energy saving performance is verified by comparing with the power of the ordinary pipeline. The results of field tests show that the energy efficiency optimization device can save energy when there is obvious irregular turbulence in the water flow. The results show that the energy efficiency optimization device has a good effect on energy saving under the condition of irregular turbulence in the water flow. As an indispensable part of fluid transmission network, the performance of check valve affects the loss of energy in the process of transmission. In view of the disadvantages of the traditional check valve, such as large water retaining area and large flow resistance coefficient, a new type of rotary multi-valve check valve is designed. When the valve disc is open, the valve disc is located on the side of the runner, which effectively reduces the water retaining area, and four valves are adopted. It can effectively reduce the stroke when the disc is closed. Through the FLUENT simulation experiment, it is proved that the flow resistance coefficient of the check valve is relatively low compared with most check valves when the valve is opened, which indicates that the flow capacity of the check valve is very strong, so it can play a certain energy-saving role.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2011
【分類號】：TH122

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