在线一本码道高清

Position: Home > Book Manual > Data Download > Electric Power > Design and Application of Hydraulic Operating Mechanism

Design and Application of Hydraulic Operating Mechanism

Bookmark this page
  • Data size: 17.03 MB
  • Data language: Chinese version
  • Document format: PDF document
  • Data category: Electric Power
This site recommends:
Related Information:
Related instructions:
  • basic introduction
Design and application of hydraulic operating mechanismPublishing time: 2011 edition Brief introduction Circuit breaker is the most important control element in the power system. Its intelligence is an important guarantee for the construction of a strong smart grid, and the stability of the mechanical action of the operating mechanism And controllable operation is the foundation of intelligent circuit breaker. "Design and Application of Hydraulic Actuating Mechanism" introduces the standards to be followed by hydraulic operating mechanisms, the requirements and terminology of hydraulic operating mechanisms for high-voltage circuit breakers, and the basic knowledge of hydraulic fluid mechanics commonly used in hydraulic operating mechanisms; Basic principles, main performance parameters, necessary design of hydraulic operating mechanisms, including hydraulic pumps, hydraulic cylinders, solenoid valves, reversing valves, check valves, accumulators, working media, seals and hydraulic accessories Principles of calculation and selection; introduced the structure, principle, design and manufacturing points of hydraulic operating mechanism; the structure and principle of representative imported and domestic hydraulic operating mechanism; the common faults in operation of hydraulic operating mechanism combined with application The causes and causes are analyzed, and the solutions are given. Finally, the new function requirements of the circuit breaker operating mechanism in the construction of smart grids are discussed. "Design and Application of Hydraulic Operating Mechanism" is mainly used by the design and manufacturing personnel of the hydraulic operating mechanism of the circuit breaker, the relevant personnel of the high voltage circuit breaker production and manufacturing unit, and the power system operation and maintenance unit. It can also be used by universities and research institutions. Related personnel reference.
Preface Chapter 1. Terms for mechanical operation of circuit breakers and related requirements for operating mechanisms1
1.1 Overview 1
1.2 Terms related to mechanical operation of circuit breakers 2
1.2.1 Circuit breaker related terms explained 2
1.2.2 Circuit breaker mechanical operation term 3
1.2.3 Characteristic parameters 5
1.3 Relevant requirements for operating mechanisms 7
1.3.1 Environmental requirements for use 7
1.3.2 Alternative operating mechanisms 9
1.3.3 Requirements to be met by SF6 circuit breaker operating mechanism 10
1.3.4 Type test requirements 18
1.4 Relevant standards to be followed by hydraulic operating mechanisms 19
Chapter 2 Overview of Hydraulic Transmission 21
2.1 Definition, System Composition and Working Principle of Hydraulic Transmission 21
2.1.1 Definition of Hydraulic Transmission 21
2.1.2 System composition of hydraulic transmission 21
2.1.3 Working Principle 21
2.1.4 Basic characteristics of hydraulic transmission 22
2.2 Working medium for hydraulic transmission 23
2.2.1 Basic properties of working fluid for hydraulic transmission 23
2.2.2 Physical properties of hydraulic oil 27
2.2.3 Classification and selection of hydraulic fluids 29
2.3 Hydraulic fluid mechanics 31
2.3.1 Hydrostatics 31
2.3.2 Fluid Dynamics
2.4 Pressure loss during liquid flow 37
2.4.1 Basic Concepts
2.4.2 State of Motion When Liquid Flows 37
2.4.3 Pressure loss along the way 39
2.4.4 Local Pressure Loss
2.4.5 Total pressure loss and pressure efficiency in piping systems 40
2.5 Orifice and gap flow 40
2.5.1 Orifice Flow Characteristics
2.5.2 Gap flow characteristics
2.5.3 Radial Flow Flow Through Parallel Disc Gap 43
2.5.4 Conical annular gap flow
2.6 Cavitation and Hydraulic Shock
2.6.1 Air separation pressure and saturated vapor pressure of oil
2.6.2 Examples of Cavitation
2.6.3 Hydraulic Shock 45
Chapter 3 Hydraulic Components and Their Symbols 47
3.1 Hydraulic pump and hydraulic pump motor 47
3.1.1 Working principle and characteristics of hydraulic pump 47
3.1.2 Main performance parameters of hydraulic pumps 47
3.1.3 Power and Efficiency
3.1.4 Noise of Hydraulic Pumps
3.1.5 Classification of Hydraulic Pumps
3.1.6 Hydraulic pump motor 49
3.1.7 Radial Piston Pump Example Calculation 50
3.2 Hydraulic Cylinder 52
3.2.1 Speed and thrust calculation of double-acting single-piston rod constant-charge differential hydraulic cylinder
3.2.2 Hydraulic Cylinder Buffers
3.3 Hydraulic control valve 59
3.3.1 Pressure control valve 59
3.3.2 Throttle valve 70
3.3.3 Directional Control Valves
3.4 Accumulator 86
3.4.1 Working principle, classification and structure of accumulators
3.4.2 Calculation and Application of Accumulator Parameters
3.5 Pressure relay and pressure gauge 95
3.5.1 Overview
3.5.2 Classification and Performance Requirements of Pressure Relays
3.5.3 Typical Structure and Working Principle
3.5.4 Pressure Gauges and Pressure Gauge Protection Valves
3.6 Fuel tank and accessories 101
3.6.1 Fuel Tank 101
3.6.2 Level Liquid Thermometer 103
3.6.3 Hydraulic Air Filters
3.6.4 Card sets of pipe joints 103
3.6.5 Miniature Pressure Gauge Connectors 105
3.6.6 Oil filter 106
3.7 Hydraulic graphic symbols commonly used in hydraulic operating mechanisms 107
3.8 Mechanical Transmission
3.8.1 Mechanism components, motion pairs and their classifications 111
3.8.2 How a Kinematic Pair Restricts and Restricts Free Movement of a Member 124
Chapter 4 Design and Manufacturing of Hydraulic Actuators 156
4.1 Hydraulic Operating Mechanisms and Their Classification 156
4.2 Design Points
4.2.1 Clear design basis and analysis of working conditions
4.2.2 Draw up the structural principle of the hydraulic system
4.2.3 Overall Design
4.2.4 Seal Structure Design
4.3 Approximate Calculation of Dynamic Characteristics of Hydraulic Transmission System 170
4.3.1 Approximate Calculation of Operating Speed of Hydraulic Cylinder Pistons
4.3.2 Approximate calculation of valve system operating time
4.3.3 Approximate calculation of electromagnet operation time and measures to reduce electromagnet operation time 172
4.4 Optimal Design of Hydraulic Transmission System
4.4.1 Overview
4.4.2 Easy5 Product Overview 174
4.5 Pollution prevention and control of hydraulic operating mechanism 183
4.5.1 Oil (particle) cleanliness 183
4.5.2 Water pollution
4.5.3 Pollution prevention and control of hydraulic system of hydraulic operating mechanism 187
4.5.4 Preventing the Contamination of Air
Chapter 5 Operation and Maintenance of Hydraulic Operating Mechanism 191
5.1 Structural Principles of Hydraulic Mechanisms
5.1.1 Structural principle of the hydraulic mechanism
5.1.2 Domestic hydraulic mechanism 198
5.2 Electrical control principle and wiring diagram 204
5.2.1 Drawing and regulations of electrical control schematic diagram 204
5.2.2 Principles of Electrical Control 204
5.2.3 Wiring Technical Requirements 208
5.2.4 Selection of secondary components 210
5.3 Instructions for use of typical hydraulic mechanisms and analysis of common faults and solutions 217
Chapter 6 Intelligentization of Hydraulic Actuators of Circuit Breakers and Development Trends of Hydraulic Actuators 230
6.1 Intelligentization of circuit breaker hydraulic operating mechanism 230
6.2 Development Trend of Hydraulic Operating Mechanism 233
References 234

液压操动机构的设计与应用 Design and Application of Hydraulic Operating Mechanism

Download Ranking

Latest information