How do
1. Calculate the size cylinder

Formula for diameter

D = [(A x 4) / 3.14] 1 / 2.
D = [(22 x 4) / 3.14] 1 / 2.
D = [28.02] 1 / 2.
D = 5.29 inches.

Therefore, to use 5 inch piston-cylinder, 3-inch (5.29-inch size available in the market) and to add more pressure to get the desired strength.

From formula

F = P / A (at P = 2,000 pounds per square inch, A = 5 inches).
F = (2,000 x 3.14 x 5 x 5) / 4.
F = 39,250 lbs.
F = 17.8 tons.

2. Calculate the size of the pump.
From formula

Q = V * A.
Q1 = 3 x {[(3.14 x 5 x 5) / 4] – [(3.14 x 3 x 3) / 4]}.
Q1 = 37.7 cubic inches per second.
Q1 = (37.7 x 60) / 231.
Q1 = 9.79 gallons per minute (GPM) (231 cubic inches = 1 US.gallon).
Q1 = 9.79 / 0.2642.
Q1 = 37.05 L / min (I / min) (0.2642 US.gallon = 1 liter).

Oil flow (Q1) in the run up the piston stroke = 9.79 gallons per minute (GPM).

Q2 = 1.5 x [(3.14 x 5 x 5) / 4].
Q2 = 29.44 cubic inches per second.
Q2 = (29.44 x 60) / 231.
Q2 = 7.64 gallons per minute.

Oil flow (Q2) in the piston down stroke. (Not yet touching piece of work) = 7.64 gallons per minute.

Q3 = 0.2 x [(3.14 x 5 x 5) / 4].
Q3 = 3.92 cubic inch per second.
Q3 = (3.92 x 60) / 231.
Q3 = 1.01 gallons per minute.

Oil flow (Q3) in the piston down stroke. (When recording part) = 1.01 gallons per minute.

Therefore, a double-pump, pump size 7 gallons per minute and 1 gallon per minute at 1,200 rpm or size 8.45 gallons per minute and 1.2 gallons per minute at 1,450 rpm.

3. Calculate the magnitude of the electric motor.
From formula

Horsepower (HP) = {[Flow Rate (GPM) x Pressure (PSI)] / 1714} + Safety Factor 20%.
Horsepower (HP) = {[(8.45 + 1.2) x 500] / 1714} + 20%.
Horsepower (HP) = 3.4 hp (when the piston moving down Not reach parts).
Horsepower (HP) = {[1.2 x 2,000] / 1714} + 20%.
Horsepower (HP) = 1.7 hp (when compressed specimens).

TEMPOSONIC TRANSDUCER WORKS DIAGRAM

      Regarding to the temposonics position sensor and position transducers which an electronic pulse called the current pulse (A. Point) is created in the head-unit will be created and to accelerate along the sensor tube.

     Down the sensor tube that  a circular magnet having it’s own flux(magnetic field), (B. Point) indicates the position of the hydraulic cylinder. Because the current pulse (A. Point) interacts by the flux(B.Point) a strain pulse (C. Point) is produced and travels back along the sensor tube until it is detected at the head of the unit.       

A circular magnet position is through his time between the start of the electronic pulse and heart rate determined effort to return. Why this way, the exact position of the hydraulic unit found without his wearing one of the sensitive elements.

position-sensing-smart-hydraulic-cylinders-large

In-cylinder displacement transducer (LDT) were used with limited success in mobile devices to achieve these goals. [1] A limitation for most of LDT in bottles, is that the hydraulic cylinder rod must be aos drilled through its center to adjust some elements of the LDT, AI in general, the waveguide tube made of a magnetostrictive transducer. [2] The additional processing steps and associated production, drilling Äúgun, AU add the piston rod to considerable costs for the finished cylinder. And even if magnetostrictive LDT offer extremely high accuracy, this accuracy is usually much higher than is necessary for applications on mobile devices more accuracy Overkill AI, if you want, [3].

Hydraulic cylinder Energy Manufacturing Co, Inc [4]. has a Hall effect sensor mounted on the barrel a sense of place in a magnetic piston. The sensor is mounted without gundrill the rod, but its small size and location away from the potential environmental LDT damage.External
external displacement transducer (LDT) eliminates the need for a hollow shaft of the hydraulic cylinder. Instead, Au an external recognition, Äúbar with Hall-effect technology detects the position of the cylinder, the piston AOS. This is achieved by placing a permanent magnet inside the bulb. [5] The magnet magnetic field propagates through the steel wall of the hydraulic cylinder, a signal to the sensor location. [6] The LDT has the following advantages over .

Outside of the LDT procedure.

In general, lower total costs (ie, no need to gun-drill rod)
Instability is maintained with full auctioning
The cylinder is easier to assemble, install and service
A variety of sensor inputs and outputs are available
The permanent magnet in the piston should never be shared must
The external sensor is easily accessible and easy to replace, if necessary
If the detection beam is replaced, recalibration is not necessary
The sensor bar is small and its position along the outer wall of the hydraulic cylinder to minimize the risk of environmental damage
Positioning accuracy is / – 0.5 mm or more, more than enough for most mobile devices
There are no cables or wires are used, and therefore no concerns about stretching or breaking through the ice, branches or other obstacles to the environment
In the case of the machine lost power and later, the sensor sends the current position
OEM can aos prepare hydraulic cylinder with magnets so that end users add detection at a later date, if desired

Recommendations on the oil filter and drain when running in normal condition.

- Work 100 hours for full hydraulic system should make a new filter to clean. Or replaced.

- Change your oil every 3000 or 5000 operating hours.

Rules should be implemented to work

- Do not use cotton or similar material to clean.

- Taking oil from the system. Clean or replace filters and clean the tank should be done with caution and circumspection.

- Add oil to a new system.

- As the machine empty on low pressure or no pressure in it is at least 30 minutes for the oil circulation in all parts of the circuit.

- Set a new all

Monitoring of repeat periodically. During the operation. Especially temperature. Higher temperatures result in faster wear of machinery parts than usual. Check oil level and blockage of the filters frequently than usual. Including the observation volume, which indicates disorders caused or is about to happen.

Stop the machine in a short time if not more than two months do not need to measure anything special. Stop the machine in the long run. Operation should be periodically With the pump walk unarmed without pressure in order to lubricate the best in the regular and Rod should be in a position shrink or a K strip º anti corrosion in case of discontinuation of machinery. that already.

The last time we looked at single rod cylinders, which are pointed with their stems extending towards the sky.

We found that the directional valve closed two ports of the cylinder is the only way to push the cylinder down to allow the loss of fluid outside of the bottle. We have found that can not fall down the rod and the piston, otherwise a solid cylinder of liquid no additional space for the volume of steel that has the trunk.

Lets end this week with a look at the bottles that are attached to the head. The stem of the cylinder extends downward.

Again, this is a fairly common misconception that a worn piston seal to move fluid to the piston rod side of the cylinder side, crawl so in line.

We will start with the directional control valve is closed (we ball valves at each cylinder port in the vicinity has just made clear) and the stem is fully retracted. Suppose that the cylinder is filled with hydraulic fluid.

If the piston seal is absent, and we have to crawl a load on the cylinder rod?

When the bottle full of steel (piston and rod was) and liquid () largely non-compressible fluid, what would happen if the parent does not give creep into the expansion?

If the rod goes well, the cylinder open and closed, the amount of volume occupancy lose accordingly. What fills the gap which is generated inside the cylinder?

A large force (heavy) pulling on the end of the stalk may cause some expansion, but the whole movement would be very low. Since the blank would be very long in a tiny fraction of an inch.

And a heavy burden lifted, the forces of labor, the cylinder down. But if ports are closed by valves, which blocked the flow path?

 It popular is that the piston seal is broken inside the cylinder and the movement of drift occurs because the fluid by gravity under pressure is forced by the piston. But is this possible?

Can a single rod cylinders really behave in this manner when the piston seal fails?

To answer these questions we need to consider some basic principles of volume.

Imagine a six-foot, 6 “diameter pipe closed at one end and sitting on a surface. Imagine that the hose is already filled with liquid. Then you come to drop with a length of 2 inch diameter rod in solid steel pipe open end at the top.
What happened? Liquid overflows and spills, because the pipe was already full. He was put in place over the line for the volume of steel in him and you because of the displaced liquid was left.
cylindermyth6

Now consider a vertical cylinder with the tip of the stem upward. Rod End gland and seal are in good shape.

Let’s start with the stem fully extended, and suppose that there is no air in the fluid under the piston. The cylinder is lifting a heavy load. Both the ground (barrel end) and above (rod end) will be closed ports ball valves.

If we now remove the piston seal, so there is a noticeable gap between the piston and cylinder wall, what will happen?
If the piston and rod assembly, or it will drift down in his seat?

Brittle Magnetic Leads
Problem statement :
    The continued use of the magnetic coil over a period of time is a fragile cable insulation. This creates the possibility of isolation and / or broken wire can cause a short circuit in the magnet coil
Cause of the error are:
                         1. The drivers are generated by the coil affects the heart. This situation is exacerbated by high ambient temperatures.
2. Hydraulic fluid type can be eaten or isolation.
3. Coolant can be used by the machine to destroy the insulation.

Magnets fireproof exposed to liquids:
Problem statement :
    The exposure of magnetic coils fire resistant fluids such as phosphate esters will lead shorts between windings of the coil. These liquids also dissolve the varnish on the coil and magnet-black color. The liquid on the insulation of the wires go, so it has become too vague and leave eventually. This condition can be avoided through the purchase of magnetic coils or rolls that are compatible with corrosive liquids.

Cause of failure:

1. Chemical reaction with the magnet.
Solenoid failure – burns continuous output current coil of nylon boot cast causes of failure:
1. Mechanical stop
2. Line voltage low
3. Overtemperature
4. Acceleration cycle.
5. Excessive or high-voltage line.

Solenoid failure – shorted:
Problem statement :
1. Refrigerants containing metal shavings
2. Voltage transients
3. Fire resistant fluids

Solenoid failure – Mechanical destruction
Problem statement :
1. Surge
2. Cycle on Rates
3. Zealous mechanic.

Solenoid shorted:
Problem statement :
A magnet for use in or near water coolant are saturated with fine particles of metal susceptible to short-circuit between coil cable links
Cause of the error are:
1. Soaking the cooling coil.

A large tables hose concrete bearing can be precisely controlled. They start a stop to all the wrong places, causing hours of additional staff to physically relocate 50 ‘x 35′ tables in place.

Solution: Engine PLC system asser some thought to the hydrostatic drive designed a Summer installed. Today, nip Way to see a clear move stops from 0.15 “to Desiree position.