All Questions
Tagged with pneumatic hydraulics
11 questions
0
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20
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What is the correct equation for McKibben force output calculation?
I found this post, but no matter how many times I try, either in radians or in degrees, the results are simply weird.
My "correctest" result was -179533.
The dimensions are 100mm of length, ...
- 51
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votes
3
answers
1k
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What are the Units of flow coefficient Cv? And relationship between flow coefficient Cv formulas of incompressible and compressible fluids
I tried to understand flow coefficent Cv of a valve. There are many similar discussions on the Internet, e.g.,
https://www.pneumatictips.com/what-is-the-flow-coefficient-cv/
There are two formulas for ...
- 107
0
votes
1
answer
42
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Why would the compressor provide more pressure than necessary? Isn't the pressure determined by the resistance?
I clearly misunderstood something
-1
votes
1
answer
934
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How to build a hydraulic standing desk?
I am trying to build a standing desk but I want it to be wireless (aka - no electricity needed).
My idea is:
have 4 hydraulic pistons that extend (from 60 cm (25in) to 120 cm (50in)).
They will be ...
- 99
0
votes
1
answer
411
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Confusing terminology for "normally closed/open" - It means the opposite in electronics (relays) versus fluids (valves)
I'm an electrician and "normally open" / "normally closed" is well known to me. I recently started to also work on heating systems including the pneumatic system that controls some ...
- 119
1
vote
1
answer
70
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Are there hydraulically actuated pneumatic valves?
I am working on a hydraulic system that is powered by an air-hydraulic piston pump, the pump uses pneumatic pressure to drive a piston which then pressurizes the hydraulic system.
The system needs to ...
- 31
1
vote
1
answer
688
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Circuit to provide position control for double action hydraulic actuator
I was wondering how to construct a hydraulic circuit to control a hydraulic double acting piston/actuator enabling the electronic control of the piston extension. I have found the following pneumatic ...
- 113
0
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1
answer
4k
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How do you interpret a pneumatic regulator symbol?
I'm an EE trying to interpret a pneumatic schematic and have a few questions regarding the symbols being used.
I've come across two different regulator symbols (or so I believe them to be regulator ...
- 189
1
vote
1
answer
1k
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Calculating piston force for pneumatic vs hydraulic
I'm trying to calculate piston force pressures for double acting pistons for pneumatic and hydraulic pressures. I found the following formula for calculating both
$$\text{Force} = \frac{\text{...
- 111
1
vote
1
answer
101
views
Hydraulic Arm - Handbrake
I am researching a system that appears to have a hydraulic arm with some kind of "handbrake" as pictured below:
System Description:
Table that can raise and lock into place
Locking mechanism ...
- 113
1
vote
1
answer
215
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What material properties matter when selecting a material to withstand a specific pressure (as a sealed tank)?
I want to design a tank to hold liquid propane. The proposed tank would have one inlet valve, one output valve, and no sharp edges. I've read that the pressure required to maintain propane in a liquid ...
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