深海近底層多網(wǎng)分段-分層生物幼體保壓取樣器研究.pdf

1、浙江大學機械與能源工程學院碩士學位論文深海近底層多網(wǎng)分段分層生物幼體保壓取樣器研究姓名：葛朝平申請學位級別：碩士專業(yè)：機械電子工程指導教師：李世倫20080601浙江太學碩士學位論文_—————————————————————————————————————————，’_———●————●、————一一AbstractWiththeexhaustionoftheresourceinmainland，humanbeingspaytheir

2、attentiontothevastoceanWiththedevelopmentoftechnology，humanbeingsspeedupthepaceofexplorationofmarinelife，thusavarietyofmarinelifesamplerappearedAimingatmainlynearthebottomofthedeepseahydrotherrnalbiologicallarvae，thisart

3、icledevelopedasetofbiologicallarvaepressure—retainedsamplingsystemMostofthemarinelifesamplingsystemhavetwomajorissuesFirstofallitcannotmaintainpressure，Secondlyonlycanbeinthestratifiedwatercolumnintheverticaldragsampling

4、theyCannotbenearthebottominthesub—collectionsamplingInthispaperthedesignofthesamplerisexpectedtosolvethesetwoissuesThethesisincludessixchaptersInchapter1，firstlyweintroducethebackgroundofmarinelifesamplerthenanalyzethead

5、vantagesanddisadvantagesofpresentmarinelifesampleranditsdeveloping骶ndFinally，weputforwardthepurpose，significanceandmaincontentofthisprojectInchapter2，wefirstintroducetheoverallstructureofthebiologicallarvaepressure。retai

6、nedsamplerThenexpoundonprincipleonthethreestudiesInchapter3，wehavebeenmainlystudiedonmultiplenetworkssubsection／layeredautomaticallyswitchmachineofthebiologicallarvaepressureretainedsamplerThenputforwardthreedesignoption

7、s：Springmachine、LevermachineandHydraulicdrivemachineComparingwiththethreeoptions，finallyweadoptthehydraulicdrivemachinetoachievetheautomaticswitchingnetworkfunctionsInchapter4，wefirstintroducetheoverallstructureofthepres

8、sureretainedsvstemofmarinelifesamplerthenstudythematerialandpressuredesignguidelinesofthepressureretainedcylinderIntlledesignofthepressureretainedcylinderweadoptthesafestdesigncriteriatomakethedesignmoresecureInordertove

9、rifythereliabilityofthedesign，wehavedonetheFEAtothecylinderThenweintroducethedesignofballvalve，WiththeFEAsoftware，such嬲ANSYS，wehavedonethestressanalysisonaballvalveIntheendWeintroducethesealdesignofthepressureretainedcyl

10、inderInchapter5，wemainlydoafurtherstudyonthedesignofpressurecompensationcontainersThroughthepressurelosscMculmionofthepressureretainedcylinder，weprovethenecessityofthedesignofpressurecompensationcontainersThroughstudying