338-0503/02 – Pneumatic Elements and Systems (PnPrv)
| Gurantor department | Department of Hydromechanics and Hydraulic Equipment | Credits | 5 |
| Subject guarantor | Ing. Lukáš Dvořák, Ph.D. | Subject version guarantor | Ing. Lukáš Dvořák, Ph.D. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 1 | Semester | summer |
| | Study language | Czech |
| Year of introduction | 2013/2014 | Year of cancellation | |
| Intended for the faculties | FS | Intended for study types | Follow-up Master |
Subject aims expressed by acquired skills and competences
The aim of the course is to acquaint students with the structure and function of pneumatic components and pneumatic systems. At the end of the course students should be able to design suitable linear pneumatic cylinder, rodless or semi-rotary motor, gripper or vacuum suction cup. They are also should be able to design and assemble a pneumatic circuit to control the working elements and to select the appropriate size of the elements for the correct operation of the mechanism.
Teaching methods
Lectures
Tutorials
Experimental work in labs
Summary
Předmět je jedním ze základních pro obor Hydraulika a pneumatika a povinný pro státní zkoušku. Probírají se zde vlastnosti pneumatických mechanismů, vlastnosti stlačeného vzduchu, proudění, výtoková rychlost, výroba, úprava a rozvod stlačeného vzduchu, výpočet vedení. Dále jsou probírány pracovní prvky pneumatických mechanismů: pneumomotory přímočaré, kyvné, rotační, úchopné hlavice, jejich konstrukce a výpočty. Následují řídicí prvky: rozváděče, ventily jednosměrné, škrticí, logické, rychloodvětrávací, tlakové, jejich provedení, použití, vlastnosti a charakteristiky. Poté jsou probrány základní pneumatické obvody, jejich skladba a praktické sestavení na výukových trenažerech. V rámci předmětu jsou rovněž probrány vakuové mechanizmy, výpočty pneumatických obvodů a měření a zkoušení pneumatických prvků a systémů.
Compulsory literature:
Recommended literature:
Basic pneumatics: information and instruction book about pneumatics and components and their applications. Erbach: Bosch, 2003. 184 s.
PARR, A. Hydraulics and Pneumatics - A Technician's and Engineer's Guide (3rd Edition). 2011. Elsevier. Online version available at: https://app.knovel.com/web/toc.v/cid:kpHPATEG01/viewerType:toc.
Way of continuous check of knowledge in the course of semester
Zápočet: v průběhu semestru bude zadáno 5 programů, za které je možno získat až 25 bodů, na konci semestru bude kontrolní test za max. 10 bodů. Minimum pro získání zápočtu je 20 bodů, max. 35 bodů.
Zkouška: test (50 bodů), ústní – 1 otázky (15 bodů).
E-learning
Other requirements
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Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Lectures:
1. Classification and properties of pneumatic mechanisms, comparison with other types of mechanisms. Properties of compressed air, basic parameters.
2. Production of compressed air. Compressors and their regulation. Compressor stations. Distribution of compressed air, its calculation, piping design.
3. Compressed air treatment components - filters, condensate separators, lubricators, soft start valves, safety 3/2 valve.
4. Linear pneumatic motors, damping, special design of linear motors. Calculation, construction.
5. Semi-rotary motors, calculation, construction. Rotary motors, advantages and disadvantages, working parameters, characteristics. Types: piston, gear, vane, their construction, control.
6. Control components, classification, types of sealing elements. Directional control valves, their control, construction. Valve terminals.
7. Check valves, logic components, quick-exhaust valves, throttle valves. Pilot check valves with throttle and check valve. Pressure valves and combined control elements. Pneumatic counter. Silencers.
8. Pneumohydraulic mechanisms. Special mechanisms: feed device, turntable, cylinders with brake. Stopper cylinders, pneumatic booster.
9. Grippers. Gripper selection criteria. Clamping components.
10. Vacuum mechanisms. Ejectors, suction cups, calculation, construction.
11. Testing of pneumatic components and systems. Measurement of quantities.
12. Components for pressure cleaning, blowing and cooling. Pneumatic struts.
13. Mobile pneumatics.
14. Modeling of pneumatic systems - demonstration of computational software.
Exercise:
1. Work safety. Air properties - repetition. Thermodynamic calculations: equation of state, emptying of air tank.
2. Calculation of the air tank size.
3. Calculation of piping diameter, Pressure losses during air flow in piping. Outflow of gas from vessel, calculation of flow losses and determination of economic impact.
4. Calculation of linear pneumatic motor. Program No.1.
5. Calculation and selection of rodless pneumatic motor. Program No. 2. Examples of computational programs.
6. Calculation and selection of semi-rotary pneumatic motor. Program No. 3. Examples of computational programs.
7. Practical exercises - basic circuits for controlling direction of movement, speed of movement, force and torque control. Program control: position, time, pressure, speed.
8. Practical exercises + drawing programs.
9. Circuit permeability calculation - program No. 4.
10. Design of vacuum mechanisms, contactless manipulation. Design of the gripper. Fluidic muscle design.
11. Measurement of reduction and throttle valve characteristics. Program No.5.
12. Test, pneumatic booster design.
13. Practical exercises, orientation in drawings.
14. Modeling of pneumatic systems - demonstration of computational software.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction