338-0323/01 – Technical Diagnostics and Reliability of Hydraulic Mechanisms (TDaSHM)
Gurantor department | Department of Hydromechanics and Hydraulic Equipment | Credits | 5 |
Subject guarantor | doc. Dr. Ing. Lumír Hružík | Subject version guarantor | doc. Dr. Ing. Lumír Hružík |
Study level | undergraduate or graduate | Requirement | Compulsory |
Year | 3 | Semester | summer |
| | Study language | Czech |
Year of introduction | 2009/2010 | Year of cancellation | 2012/2013 |
Intended for the faculties | FS | Intended for study types | Bachelor |
Subject aims expressed by acquired skills and competences
To acquaint students with the basic concepts of technical diagnostics and basic diagnostic methods. To acquaint students with problems of reliability of hydraulic components and equipment. To acquaint students with the sensors and measuring instruments in the technical diagnostics of hydraulic components and equipment and the problems of technical diagnostics of hydraulic components and equipment. To acquire experience in practical measurement and diagnostics of hydraulic components and equipment. To learn to work with measurement and diagnostic system M 5000 Hydrotechnik.
Teaching methods
Lectures
Tutorials
Experimental work in labs
Other activities
Summary
Study of the subject will provide knowledge from field of the diagnostics of hydraulic components and equipment with a sight on free of disassembly diagnostics. Parametric, vibrodiagnostic, tribotechnical and thermodynamic diagnostic methods of technical diagnostics are discussed. There are considered problems of reliability of hydraulic components and systems in the subject. There are described the instruments of technical diagnostics in terms of subject. Physical principles and metrological characteristics of sensors including the requirements on the sensors are given. There are described the sensors of diagnostic variables: pressure, flow, temperature, trajectory, speed, acceleration, force, moment, revolutions, noise and vibration. The basic diagnostic measurements of hydraulic and pneumatic components (hydro-generators, rotary hydro-motors, linear hydro-motors, compressors, pneumomotors, pressure valves, distributors and other flow elements) and systems are discussed. The subject also deals with operation simulation and monitoring of machines.
Compulsory literature:
Recommended literature:
Way of continuous check of knowledge in the course of semester
1 projekt
3 laboratorní úlohy
E-learning
Other requirements
There are no other requirements for student.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
The program of lectures
Week lectures
1 Meaning and tasks of technical diagnostics. Terminology. Diagnostic
parameters. Technical Diagnostics Methods: parametric methods
diagnostics.
2 Methods of technical diagnostics: Vibrodiagnostics, measurement and
evaluation of vibration, vibroacoustic diagnostics. Thermodynamic method.
3 The methods of technical diagnosis: tribotechnical - tribodiagnostics
degradation of lubricating oils, machinery wear tribodiagnostics
systems.
4 Reliability of hydraulic components and equipment.
5 Technical Means of diagnosis: distribution. Sensors variables:
requirements metrological characteristics. Calibration
sensors.
6 sensors diagnostic variables: pressure, flow, temperature, runway,
speed.
7 Sensors seven diagnostic variables: speed, strength,
torque, speed, noise and vibration. Multi-sensor and evaluation
systems.
8 Diagnosis of hydro, rotary motors, linear
motors, compressors, pneumomotorů, pressure valves, switchboards
and other flow elements.
9 Simulation of operation. Diagnostics of hydraulic systems. Monitoring
machines.
Exercise program + individual working of students
Week Refill exercises and seminars
1 Examples of a means of technical diagnostics in the laboratory department. Introduction to measurement and evaluation system Hydrotechnik M 5000.
2 Diagnosis of two rotary hydraulic motor and switchgear. Measurement of cavitation in hydraulic variables measuring system M Hydrotechnik 5000.
3 Programme 1: Diagnosis of a hydraulic drive with hydraulic rotary measuring system M Hydrotechnik 5000. The program can receive up to 10 points.
4 Programme 2: Project technical diagnostics of the system.
The program can receive up to 10 points.
5 Diagnostics working fluids. Measurement of modulus of liquids.
Program No. 3: Measurement of fluid viscosity programmable Brookfield rotational viscometer. The program can receive up to 8 points.
6 Agenda No. 4: Calibration of pressure sensor piston gauge. Calibration indukčnostního encoder. The program can receive up to 7 points.
7 Examples of computing reliability indexes.
8 Measurement of vibration.
9 Measurement of ultrasonic distance sensor. Credit.
Exam questions:
1 Meaning and tasks of technical diagnostics. Terminology.
2 Basic methods of technical diagnostics. Parametric methods of technical diagnostics. Diagnostic parameters.
3 Vibrodiagnostics. Vibroacoustic diagnostics.
4 Tribotechnical diagnosis - tribodiagnostics lubricant degradation
oil.
5 Tribotechnical diagnosis - tribodiagnostics wear
mechanical systems.
6 Means of technical diagnostics - distribution.
7 Sensors seven variables: the requirements of the metrological characteristics.
8 Basic physical principles of sensors.
9 Encoder, speed.
10 Pressure and power.
11 Flow and speed.
12 torque sensors. Temperature sensors.
13 Noise and vibration sensors.
14 Multi-sensors and measuring instruments.
15 Calibration of pressure sensors, and flow path.
16 Simulation of operation - Pressure and flow jump.
17 Diagnosis of hydraulic pumps: a circuit diagram, measuring principle
characteristics.
18 Diagnosis of rotary motors: a circuit diagram, measuring principle
characteristics.
19 Diagnosis of linear hydraulic motor: a circuit diagram, principle
measurement characteristics.
20 Diagnosis compressor circuit diagram, measuring principle
characteristics.
21 Diagnosis pneumomotoru rotation: a circuit diagram, measuring principle
characteristics.
22 Diagnosis of pressure valves: a circuit diagram, measuring principle
characteristics.
23 Diagnosis of distributors and one-way valve: a circuit diagram,
measuring principle characteristics.
24 Thermodynamic methods for measuring efficiency: principles, basic relations.
25 Track machine.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction