Fluid power with applications 7th edition answers

Fluid Power: With Applications Seventh Edition Answers

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Introduction to Fluid Power Systems

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* Definition of fluid power systems: The use of fluids as a medium for transmitting energy.

* Components of fluid power systems:

- Pumping unit (pump, motor)

- Hydraulic or air lines

- Valves and control devices

- Actuating components

Fluid Power Circuits

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### Basic Fluid Power Circuit Elements

1. Pumps: Devices that convert mechanical energy into fluid pressure.

2. Motor-Operated (MO) Solenoid Valve:

* Electrically operated valve with an integral motor.

3. Directional (DC) Valves:

- Two-position, two-way valves used to control flow direction.

### Fluid Power Circuit Symbols

* Circle: fluid port

* Arrowhead on line: fluid flows from left to right

* Diamond shape: valve or other component with a neutral position in the center (unless otherwise indicated)

Fluid Power Actuators and Control Systems

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Actuator Types:

1. Hydraulic Motor-Operated Valve: Electrically operated, hydraulic piston motor-driven valve.

2. Air Cylinder:

- Double acting: stroke travel can be either direction.

Control System Components:

* Pressure relief device (PRD): Protects system components from excessive fluid pressure.

* Safety devices and sensors to protect people operating the equipment.

Fluid Power Piping Systems

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### Fluid Sizing

1. Head Losses: Resistance losses in pipe, fittings, valves, etc., due to friction and other factors.

2. Pipe Material Selection:

| Pipe Material | Advantages | Disadvantages |

| --- | --- | --- |

3. Flanges:

- ANSI (American National Standards Institute) flange sizes: Wt., Class ratings.

- Threaded connections, union fittings.

Fluid Power Systems Troubleshooting

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### Fluid Analysis

1. Contamination analysis:

* Particulate matter size and count determination

* Water content measurement

* Oil condition monitoring (wear metal, etc.)

2. Viscosity measurements:

* Temperature effect on fluid viscosity

3. Pressure relief device testing: Set pressure adjustment.

4. Leak detection techniques:

- Dye injection method.

- Pressure test with soap or air bubble solution.

Fluid Power Systems Safety

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1. PPE (Personal Protective Equipment) requirements:

* Eye, ear protection

* Respiratory equipment

2. Electrical safety precautions: Grounding, lockout/tagout procedures.

3. Fluid handling and storage:

- Compatible fluid selection.

- Contamination prevention measures.

4. Maintenance schedules and record keeping:

5. Operator training programs:

6. Hazardous materials management plan (HMMMP) implementation

Appendix A: Conversion Factors

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Fluid Pressure Units:

| Unit | SI Equivalent |

| --- | --- |

Fluid power with applications 7th edition answers