Purchasing new springs and experimenting with springs

AguaClara / ram_pump

Optimizing the hydraulic ram pump for more efficient use in providing plant plumbing.

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Purchasing new springs and experimenting with springs #76

Closed ChingPangggg closed 3 years ago

ChingPangggg commented 5 years ago

Distance from bottom holder (check valve) for bottom face of union: 9.6 cm Position bottom jam nut at 4cm from top face of union (when the plate valve is opened) = 82.57mm for distance of exposed rod from coupling nut 2 cm from top face of union is the highest position of the same nut (when plate valve is opened) Minimum distance of spring: 9.65 cm - 1.2 cm - 4 cm = 4.45 cm (1.73228 in) Min spring constant: 6.924 N/cm (0.6128 lbs/in)

ChingPangggg commented 5 years ago

McMaster Spring filtered catalog.xlsx Catalog in Google Sheets Data Analysis Colab Ordered 4 springs (Jun28 19) with one of them only work of one of the spring constant (6.28)

ChingPangggg commented 5 years ago

If plate valve remains opened--> spring force is too strong--> k' is too big--> move jam nuts up If plate valve remains closed--> spring force is too weak--> k' is too small--> move jam nut down

alyssaju commented 5 years ago

Position bottom jam nut(including washer) at 4cm from top face of union (when plate valve is opened) Test 1:

effluent valve was closed; initially drive pipe was closed and then opened
allowed water to run through pump but water leaked through joints (where ram pump connects to the drive pipe & nipple joints in ram pump)

Test 2:

effluent valve was closed
tightened joints and eliminated most water leakage
water filled into the air chamber at a faster and consistent rate; take a look at the spikes in the graphs

Test 3

allowed water to fill the chamber all the way to the top and then closed drive pipe
water slowly flowed out of the chamber (where?)
seems like the spring was too weak and the plate was closed the whole time when the drive pipe was open

alyssaju commented 5 years ago

Position bottom jam nut(including washer) at 4cm from top face of union (when plate valve is opened) test1 test2

Position bottom jam nut(including washer) at 4.3cm from top face of union (when plate valve is opened) test3

alyssaju commented 5 years ago

Test 1

spring cut 14.95N
positioned stopper at 4.55cm from top face of union (when plate valve is opened)
water level in air chamber increased by 0.1cm

Test 2

positioned stopper at 4.00cm from top face of union
water level in air chamber increased by 0.1cm

Test 3

positioned stopper at 3.00cm from top face of union
started at 6.0cm

Test 4

positioned stopper at 2.25cm from top face of union
water level rises from 2.8-5.8cm consistently and then stops at 5.8cm

alyssaju commented 5 years ago

Test 2

positioned stopper at 2.2cm from top face of union
initial height of water in air chamber (start): 18cm
final height of water in air chamber: 84cm

ChingPangggg commented 5 years ago

From rod end to bottom stopper: 8.45 mm +3.02 mm = 11.46 mm = 1.146 cm