Design of Fluid Power Systems and its analysis (Hydraulics and Pneumatics circuit design)

1. Design of Fluid Power Systems and its analysis
B. Tech (Mechanical Engineering)
A. Y. 2021-2022
(Semester – V)
Course: Hydraulics and Pneumatics
Design of Fluid Power Systems
and its analysis
by
Abhishek D. Patange
Assistant Professor
Department of Mechanical Engineering
College of Engineering Pune (COEP)
Abhishek D. Patange , Department of Mechanical Engineering, COEP

2. Course instructor:
Abhishek D. Patange
• Assistant Professor, Mechanical Engineering, COEP
• Ph.D. (Submitted) : Application of Machine Learning for Fault
Diagnosis, VIT, Vellore.
• Master’s : Design Engineering, COEP, Pune
• Bachelor's: Mechanical Engineering, COEP, Pune
Area of expertise:
• Mechatronics, Hydraulics & Pneumatics, Numerical Methods, Theory of Machines,
Analysis and Synthesis of Mechanism, Health monitoring & Predictive analytics, Data
acquisition/Instrumentation, The application of machine learning for Mechanical
Engineering.
• Case study based learning, Research/Project based learning
Research profiles:
• https://www.linkedin.com/in/abhishek-patange-89884179/
• https://www.scopus.com/authid/detail.uri?authorId=57204179235
• https://scholar.google.co.in/citations?user=u4zim9MAAAAJ&hl=en
• https://www.researchgate.net/profile/Abhishek_Patange
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

3. Contents:
• Introduction to fluid power
• Pascal’s law
• Calculation of pressure, velocity and power
• Design and analysis of typical hydraulic circuits
• Analysis of typical pneumatic circuits
• Practical problems for home work
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

4. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Introduction to fluid power
& Pascal’s law

5. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

6. Hydro-mechanics
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

7. Pascal’s law
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

8. Hydro-mechanics
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

9. Hydro-mechanics
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

10. Hydro-mechanics
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

11. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Calculation of pressure,
velocity and power

12. Actuation of double acting hydraulic cylinder
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
1
2
3
4
5
6

13. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Calculation of pressure, velocity, power during extension
of a double acting cylinder
Blank end
Rod end
Direction of cylinder motion
A B
T
P
F
A pump supplies oil at 0.0016 𝑚3
/𝑠 to 40 mm
diameter double acting cylinder. If the external
load acting on cylinder during extension and
retraction is 5000 N and connecting rod is 20
mm, find the
1. Hydraulic pressure during the extension
2. Velocity of piston during the extension
3. Power in kW during the extension
4. Hydraulic pressure during the retraction
5. Velocity of piston during the retraction
6. Power in kW during the retraction
𝑸𝒑 = 0.0016 𝒎𝟑/𝒔
𝒅𝒑 = 40 mm 𝒅𝒓 = 20 mm
𝑭𝒆 = 𝑭𝒓 = 5000 N

14. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Calculation of pressure during extension
Blank end
Rod end
Direction of cylinder motion
A B
T
P
F
𝑸𝒑 = 0.0016 𝒎𝟑/𝒔
𝒅𝒑 = 40 mm 𝒅𝒓 = 20 mm
𝑭𝒆𝒙𝒕 = 𝑭𝒓𝒆𝒕 = 5000 N
𝑝 =
𝐹
𝐴
1. Hydraulic pressure during the extension
𝑝𝑒𝑥𝑡 =
𝐹𝑒𝑥𝑡
𝐴𝑝
𝒑𝒆𝒙𝒕 =
5000
𝜋
4
0.042
= 3978.87 kPa
𝐴𝑝 =
𝜋
4
𝑑𝑝
2 𝐴𝑝 =
𝜋
4
0.042
𝒑𝒆𝒙𝒕

15. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Calculation of velocity during extension
Blank end
Rod end
Direction of cylinder motion
A B
T
P
F
𝑸𝒑 = 0.0016 𝒎𝟑/𝒔
𝒅𝒑 = 40 mm 𝒅𝒓 = 20 mm
𝑭𝒆𝒙𝒕 = 𝑭𝒓𝒆𝒕 = 5000 N
𝑉 =
𝑄
𝐴
2. Velocity of piston during the extension
𝑉𝑒𝑥𝑡 =
𝑄𝑖𝑛
𝐴𝑝
𝑽𝒆𝒙𝒕 =
0.0016
𝜋
4
0.042
= 1.27 m/sec
𝐴𝑝 =
𝜋
4
𝑑𝑝
2 𝐴𝑝 =
𝜋
4
0.042
𝑽𝒆𝒙𝒕

16. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Calculation of power during extension
Blank end
Rod end
Direction of cylinder motion
A B
T
P
F
𝑸𝒑 = 0.0016 𝒎𝟑/𝒔
𝒅𝒑 = 40 mm 𝒅𝒓 = 20 mm
𝑭𝒆𝒙𝒕 = 𝑭𝒓𝒆𝒕 = 5000 N
𝑃 = 𝐹 ∗ 𝑉
3. Power in kW during the extension
𝑃𝑒𝑥𝑡 = 𝐹𝑒𝑥𝑡 ∗ 𝑉𝑒𝑥𝑡
𝑷𝒆𝒙𝒕 = 5000 ∗ 1.27 = 𝟔. 𝟑𝟔 𝒌𝑾

17. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
A B
T
P
Blank end
Rod end
Direction of cylinder motion
Calculation of pressure during retraction
𝑝 =
𝐹
𝐴
1. Hydraulic pressure during the retraction
𝑝𝑟𝑒𝑡 =
𝐹𝑟𝑒𝑡
𝐴𝑝 − 𝐴𝑟
𝒑𝒆𝒙𝒕 =
5000
𝜋
4
(0.042−0.022)
= 5305.16 kPa
𝐴𝑝 − 𝐴𝑟 =
𝜋
4
(𝑑𝑝
2
− 𝑑𝑟
2
)
𝐴𝑝 =
𝜋
4
(0.042−0.022)
𝒑𝒓𝒆𝒕
F 𝑭𝒆𝒙𝒕 = 𝑭𝒓𝒆𝒕 = 5000 N
𝐴𝑝 − 𝐴𝑟
𝒅𝒑 = 40 mm 𝒅𝒓 = 20 mm

18. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
A B
T
P
Blank end
Rod end
Direction of cylinder motion
Calculation of velocity during retraction
𝑽𝒓𝒆𝒕 =
0.0016
𝜋
4
(0.042−0.022)
= 1.69 m/sec
𝐴𝑝 − 𝐴𝑟 =
𝜋
4
(𝑑𝑝
2
− 𝑑𝑟
2
)
𝐴𝑝 =
𝜋
4
(0.042−0.022)
𝒑𝒓𝒆𝒕
F 𝑭𝒆𝒙𝒕 = 𝑭𝒓𝒆𝒕 = 5000 N
𝐴𝑝 − 𝐴𝑟
𝒅𝒑 = 40 mm 𝒅𝒓 = 20 mm
𝑉 =
𝑄
𝐴
2. Velocity of piston during the extension
𝑉𝑟𝑒𝑡 =
𝑄𝑖𝑛
𝐴𝑝 − 𝐴𝑟
𝑽𝒓𝒆𝒕

19. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
A B
T
P
Blank end
Rod end
Direction of cylinder motion
Calculation of power during retraction
𝒑𝒓𝒆𝒕
F 𝑭𝒆𝒙𝒕 = 𝑭𝒓𝒆𝒕 = 5000 N
𝐴𝑝 − 𝐴𝑟
𝒅𝒑 = 40 mm 𝒅𝒓 = 20 mm
𝑽𝒓𝒆𝒕
𝑃 = 𝐹 ∗ 𝑉
3. Power in kW during the extension
𝑃𝑟𝑒𝑡 = 𝐹𝑟𝑒𝑡 ∗ 𝑉𝑟𝑒𝑡
𝑷𝒓𝒆𝒕 = 5000 ∗ 1.69 = 𝟖. 𝟒𝟖 𝒌𝑾

20. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
𝑝𝑒𝑥𝑡 =
𝐹𝑒𝑥𝑡
𝐴𝑝
𝑉𝑒𝑥𝑡 =
𝑄𝑖𝑛
𝐴𝑝
𝑃𝑒𝑥𝑡 = 𝐹𝑒𝑥𝑡 ∗ 𝑉𝑒𝑥𝑡
𝑝𝑟𝑒𝑡 =
𝐹𝑟𝑒𝑡
𝐴𝑝 − 𝐴𝑟
𝑉𝑟𝑒𝑡 =
𝑄𝑖𝑛
𝐴𝑝 − 𝐴𝑟
𝑃𝑟𝑒𝑡 = 𝐹𝑟𝑒𝑡 ∗ 𝑉𝑟𝑒𝑡
Retraction
Extension
Pressure
Velocity
Power
<
<
<
3978.87 kPa
1.27 m/sec
𝟔. 𝟑𝟔 𝒌𝑾
5305.16 kPa
1.69 m/sec
𝟖. 𝟒𝟖 𝒌𝑾

21. Regenerative circuit (fast extension)
Blank end
Rod end
A B
T
P
A B
T
P
A B
T
P
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

22. Regenerative circuit (fast extension)
Blank end
Rod end
Direction of
cylinder force
A B
T
P
A B
T
P
A B
T
P
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
𝑸𝑷
𝑸𝑹
𝑸𝑻 = 𝑸𝑷+ 𝑸𝑹
Solving for the pump flow,
𝑸𝑷 = 𝑸𝑻 − 𝑸𝑹
𝑸𝑷 = 𝑽𝒆𝒙𝒕 ∗ 𝑨𝒑 − [𝑽𝒆𝒙𝒕 ∗ (𝑨𝒑−𝑨𝒓)]
𝑸𝑷 = 𝑽𝒆𝒙𝒕 ∗ 𝑨𝒑 − 𝑽𝒆𝒙𝒕 ∗ 𝑨𝒑 + 𝑽𝒆𝒙𝒕 ∗ 𝑨𝒓
𝑸𝑷 = 𝑽𝒆𝒙𝒕 ∗ 𝑨𝒓
𝑽𝒆𝒙𝒕 = 𝑸𝑷/𝑨𝒓

23. Regenerative circuit (fast extension)
Blank end
Rod end
Direction of
cylinder force
A B
T
P
A B
T
P
A B
T
P
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
𝑸𝑷
𝑸𝒑
Solving for velocity of retraction,
𝑽𝒓𝒆𝒕 = 𝑸𝑷/(𝑨𝒑 − 𝑨𝒓)
So if you compare the formulae for
Velocity of extension and retraction,
𝑽𝒆𝒙𝒕 = 𝑸𝑷/𝑨𝒓
𝑽𝒓𝒆𝒕 = 𝑸𝑷/(𝑨𝒑 − 𝑨𝒓)

24. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Dividing velocity of extension by velocity of retraction,
𝑽𝒆𝒙𝒕
𝑽𝒓𝒆𝒕
=
𝑸𝑷/𝑨𝒓
𝑸𝑷/(𝑨𝒑 − 𝑨𝒓)
𝑽𝒆𝒙𝒕
𝑽𝒓𝒆𝒕
=
𝑨𝒑 − 𝑨𝒓
𝑨𝒓
𝑽𝒆𝒙𝒕
𝑽𝒓𝒆𝒕
=
𝑨𝒑
𝑨𝒓
− 𝟏
Regenerative circuit (fast extension)

25. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Regenerative circuit (fast extension)

26. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Regenerative circuit (fast extension)
𝑝𝑒𝑥𝑡 =
𝐹𝑒𝑥𝑡
𝐴𝑝
𝑉𝑒𝑥𝑡 =
𝑄𝑖𝑛
𝐴𝑝
𝑃𝑒𝑥𝑡 = 𝐹𝑒𝑥𝑡 ∗ 𝑉𝑒𝑥𝑡
𝑝𝑟𝑒𝑡 =
𝐹𝑟𝑒𝑡
𝐴𝑝 − 𝐴𝑟
𝑉𝑟𝑒𝑡 =
𝑄𝑖𝑛
𝐴𝑝 − 𝐴𝑟
𝑃𝑟𝑒𝑡 = 𝐹𝑟𝑒𝑡 ∗ 𝑉𝑟𝑒𝑡
Retraction
Extension
Pressure
Velocity
Power
𝑽𝒆𝒙𝒕 =
𝑄𝑖𝑛
𝐴𝑟
Simple
Regenerative
Simple
Regenerative
𝑝𝑒𝑥𝑡 =
𝐹𝑒𝑥𝑡
𝐴𝑟
𝑝𝑟𝑒𝑡 =
𝐹𝑟𝑒𝑡
𝐴𝑝 − 𝐴𝑟
𝑉𝑟𝑒𝑡 =
𝑄𝑖𝑛
𝐴𝑝 − 𝐴𝑟
Simple
Regenerative 𝑃𝑒𝑥𝑡 = 𝐹𝑒𝑥𝑡 ∗ 𝑉𝑒𝑥𝑡 𝑃𝑟𝑒𝑡 = 𝐹𝑟𝑒𝑡 ∗ 𝑉𝑟𝑒𝑡

27. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Design and analysis of
typical hydraulic circuits

28. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Design of a fluid power system

29. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Design of a fluid power system

30. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Design of a fluid power system

31. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Design of a fluid power system

32. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Design of a fluid power system

33. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Design of a fluid power system

34. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Design of a fluid power system

35. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Stepwise procedure

36. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Stepwise procedure

37. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Stepwise procedure

38. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Stepwise procedure

39. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Stepwise procedure

40. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Stepwise procedure

41. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Stepwise procedure

42. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Problem 1

43. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
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44. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
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45. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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52. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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54. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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Abhishek D. Patange , Department of Mechanical Engineering, COEP
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80. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Problem 5

81. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Two hand safety circuit

82. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Motor braking circuit

83. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Analysis of typical
pneumatic circuits

84. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Analyze the pneumatic circuit

85. Question 1:
• Explain construction and working of Shuttle valve with
schematic diagram used in pneumatics.
• Also explain electrical equivalent circuit, truth table,
Boolean expression, application for shuttle valve as OR
logic gate.
Answer is given on next page:
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

86. **Description is given on next page
Shuttle Valves (OR Gate)
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

87. Working:
A shuttle valve allows two alternate flow sources to be connected in a one-
branch circuit. The valve has two inlets P1 and P2 and one outlet A. Outlet A
receives flow from an inlet that is at a higher pressure. Figure 1.5 shows the
operation of a shuttle valve. If the pressure at P1 is greater than that at P2, the
ball slides to the right and allows P1 to send flow to outlet A. If the pressure at
P2 is greater than that at P1, the ball slides to the left and P2 supplies flow to
outlet A .
Application:
One application for a shuttle valve is to have a primary pump inlet P1 and a
secondary pump inlet P2 connected to the system outlet A The secondary
pump acts as a backup, supplying flow to the system if the primary pump loses
pressure. A shuttle valve is called an “OR” valve because receiving a pressure
input signal from either P1 or P2 causes a pressure output signal to be sent to
A
Shuttle Valves (OR Gate)
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

88. Shuttle valve as OR Gate
A+B
OR Electric Circuit OR Truth Table
Boolean expression
Application
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

89. Shuttle Valves application in circuit
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

90. Question 2:
• Explain construction and working of Twin
pressure/dual pressure valve with schematic diagram
used in pneumatics.
• Also explain electrical equivalent circuit, truth table,
Boolean expression, application for Twin
pressure/dual pressure valve as AND logic gate.
Answer is given on next page:
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

91. Twin pressure/dual pressure valve (AND Gate)
Valve body
Inlet 1 Inlet 2
Outlet
Reciprocating
spool
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

92. Working:
This valve is the pneumatic AND valve. It is also derivate of Non Return Valve. A
two pressure valve requires two pressurized inputs to allow an output from
itself. The cross sectional views of two pressure valve in two positions are given
in figure. As shown in the figure, this valve has two inputs 1 and 2 and one
output. If the compressed air is applied to either 1 or input 2, the spool moves
to block the flow, and no signal appears at output. If signals are applied to both
the inputs 1 and 2, the compressed air flows through the valve, and the signal
appears at output.
Application:
These valve types are commonly associated but not limited to safety circuits,
for example a two push button operation system whereby an operator is
required to use both hands to activate two push buttons, this would ensure the
operators hands are out of reach of any hazardous operations.
Twin pressure/dual pressure valve (AND Gate)
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

93. Twin pressure/dual pressure valve (AND Gate)
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

94. A*B
Twin pressure valve as AND Gate
AND Electric Circuit AND Truth Table
Boolean expression
Application
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

95. Twin pressure valve application in circuit
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

96. Question 3:
• Explain construction and working of time delay valve
with schematic diagram used in pneumatics.
• Explain the application with circuit.
Answer is given on next page:
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

97. • It is used wherever delay of operation is required
Time delay valve
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

98. Circuit of time delay
valve
• In the circuit the
time delay valve,
holds the cylinder
in the extended
position for the
pre determined
time, set on the
delay valve
1.4
1.2
1.4
Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

99. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Practical problems for home
work

100. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

101. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

102. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP

103. Design of Fluid Power Systems and its analysis
Abhishek D. Patange , Department of Mechanical Engineering, COEP
Thank you!
Any doubts??
Please feel free to contact
me @
adp.mech@coep.ac.in
+91-8329347107