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New QuickDesign with SmartConnect from SUN

New QuickDesign with SmartConnect from SUN

New QuickDesign with SmartConnect from SUN

SUN announced about new SmartConnect schematic tool for manifold design.

The direct link where you can read more about this online application is here . In addition SUN offers the free webinars how to use it.

This is a very interesting feature which really simplifies the preparing work of manifold design. The online application is free and required a free registration only. Before this time it was a pretty complicate algorithm to indicate connections between cartridges’ ports. Now you just draw a hydraulic schematic (easy drag and drop SUN components) and with next step you get ready to use manifold design drawing set.

I used SUN manifold design before and tried to use it now with SmartConnect – I see the difference, and it is really improving and great feature.

I think the next step from SUN to be components’ placement optimization. I really like the idea of free online manifold design, but on the other hand, I found the complicated design from SUN has not optimal components placement and always manual correction required. And the problem with it – it hard to do in CREO because at the end we get STEP file which impossible (or very hard and uncomfortable) to modify. But anyways, this online application can give you some idea how to place components in the space and this is a good basis for your own manifold design. This is why I at least recommend to pay attention to QuickDesign with SmartConnect tool.

Proportional valve control calculation. Part 1.

Part 1. Proportional control of double acting hydraulic cylinder.

See also:
Part 2. Proportional control in the regeneration mode
Online calculator for cylinder proportional control.

Fig.1. Double acting cylinder control.

Fig.1. Double acting cylinder control.

The goal of this calculation is a definition of a cylinder velocity at any percent of the operating control signal at the valve’s solenoid (voltage or amperage).
For calculations we need to know: cylinder and valve parameters (take them from manufacturer catalog), values of forces at the cylinder rod (load), and pressure drop at the return line (can be assumed as zero if unknown).

Summary:
1.1. Hydraulic cylinder extension calculation.
1.1.1. Spool lands ratio.
1.1.2. Pressure drops at the spool lands
1.1.3. Balance of forces at the cylinder.
1.1.4. System pressure calculation.
1.1.5. Flow through spool lands: max. and at current voltage.
1.2. Hydraulic cylinder retraction calculation.
1.3. Full stroke time calculation.

Read more >>>

Hydraulic Load Sensing design FAQ

By subscriptions I have received the separate links to “Load-Sensing Systems FAQ” from different suppliers. To read them you need to click the links below, fill the forms and download the PDF files with FAQ:

Of course, it’s free. Next questions are discussed there:

  • How can load sensing be beneficial to a hydraulic system?
  • What is the typical efficiency of a hydraulic system?
  • What are the problems when flow is fixed?
  • How is load sensing technology energy effective?
  • etc.

Flushing of the pipes and tubes

To do pipe flushing correctly we need to provide the special conditions to create turbulent flow. This is required to remove particles from the surface inside spindle tubes. For that we need:

  1.  High velocity of the flushing fluid (not be less than 2 to 3 m/sec. = 106 ft./sec.)
  2.  High temperature of the flushing fluid (a minimum temperature should be 140°F = 60°C)
  3.  Low viscosity of the flushing fluid (in the 10 to 15 cSt range at 104°F = 40°C)
  4.  The pressure of the flushing fluid should be held to a minimum 3 to 5 bar (22 to 73 psi), measured downstream from the flushing circuit, before the return line filter and sampling port
  5.  The flushing time to be 30 min.

Next good references about flushing I found in the internet and want to share: