Hydraulic Gates And Valves Unitn It-Books Download

Hydraulic gates and valves unitn it
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1 l ntroduction 1,2 Types of gates 3,Gates in free su rface flow 4. Radia gates 4,Radiai automa tic gates 9,Other water operatecl gates 15. Vcrtical lift gates 17,Rolling wcir gates 22,Flap gates 23. Fuse gates 33,Barricr an d barrage gates 35,Drurn and sector gates 48. Bear trap gates so,Gates in subrnerged ouders 51,Intake gates 51.
Contro and guard gates 53, Emcrgency closure gates maintenance gates and stoplogs 59. Summary of types of gare 63,3 Val ves 71,Sluice valves 71. Bu trerfl y valves 71,Cavitation in valves 75,Ho llow conc val ves an d hoods 78. Ho Jow jet valves 84,Needle valves 85,Pressure reducing valves 85. Sphere valves 87, Matching terminai discharge val ves and guard valvcs 89.
Surnrnary of types of valve 90,Contents 4 T ras hracks scrc ens and d ebris 93. Trash racks and screens in submcrged inrakes 93, Trashracks and screens in culverts aml river courses. Screen insrru mentation 96,Screen raking 97,D ebris 97. 5 Structural co nsid erations 101,Design cri teria 101. Structu ral design of radiai gates 103,Structural d esig n of vertical li ft gates 107.
Stiffeniog mcmbcrs o f skin pla tes 107,Composite construction 109. 6 O perating machinery 115,E lectro mcchanical drives 116. Oil hydraul ic operation of gates in free surface flow 121. Hoist speed 126,7 D etail d esign aspects 127,Guide and load rollers 137. T tunnion assembly 140,T runnio n bearing failure and lubrication 142. Trunnion mo unting fo r radiai gates 144,Limit switchcs 145.
Chains 148,8 Embedded parts 151, 9 H ydraulic considerations pertaining to gates 157. Flow undcr and over gates 158,H ydraulic downpull forces 166. Limited ponded up water 171,Three dimensional flow entry into sluiceways 171. Reflux d ownstream at a pier and flow oscillation 171. Hysteresis effect of gare discharge during ho istingflowering 172. HydrauLic consideratio ns pertaining to gates in conduit 172. 10 Gate vibration 185,T ypes o f gate vibration 185. The vibrating system 186,Excitation freq uencies 188.
Added mass 191,Prdiminary check on g Hc ihr uior 192 Contents. ibration due t o sealleabge 194, Flow attachment shifting of thc point of attachment and. tu rbulent tlow 196, H yd raulic dO vnpu Il forccs and fl o Y rcar tachmcnr ar. thc gare li p 199,Onsr ablc flow thro ugh small openiog 200. l low ovcr an d un der rhc k avcs uf agate 201, Vibration of overflmv grHcs d ue to inadcquate venring 201.
Vibration due to a free shcar h tyer 201,Two phase flow 202. Slack in gare components 202,11 Contro systems a nd o peration 207. Contro objectives 207,Operating rules and systems 209. T elemctry 216, Factors in the choice of automar ic gate contro systems 217. Fall back system and standby faci lities 218,I nstrumentation 223.
12 H azard and reliability of h ydraulic gates and val ves 227. E vems at spillway gare installatio ns 227,Tncidents and failures of botto m outlets 232. Fault frequency by gate typc 234,Risk assessment of gatcd hydraulic srructures 235. 13 Ice Formation 247,14 Earthquake effects on gates 251. Spillway gare installations 252,Methods of analysis 254. Allowable stresses 255,V crtical lift spii way gare installations 255.
Bottom o utlet tunnel gates 256, Operating macbinery undcr carthquake condit ions 257. Systems analysis 257,Contro buildings 261,Sample event tree fora seismic event on a dam 261. 15 Materials and protection 265,Materials 265,Steel corrosion and painting 266. Cathodic prorection 268,Conte nts 16 Mode studics 271. Fwude scale modcls 27 1,Two phasc flow problcms 272.
Two and rh ree dimensiona modcls to Froudc scale 272. Modcls for nvestigaring vibrarion prohlcms 271,17 E n vironmental considerations 277. Gated river comrol srructurcs 277,Barriers 281,Barrages 281. 18 M aintenance and operation o f g a tc installations 285. Appendix Calculation ofhydrostatic load on radi aJ gates 289.

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