GB/T 38206.5-2021Methods to assess the reliability of pneumatic components - Part 5: Non-return valves, shuttle valves, dual pressure valves(AND function), one-way adjustable flow control valves, quick-exhaust valves (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"

Drafting.

This document is the fifth part of GB/T 38206 "Pneumatic Components Reliability Evaluation Method". GB/T 38206 has released the following

part.

---Part 1.General procedures;

---Part 2.Reversing valve;

---Part 3.Cylinder with piston rod;

---Part 4.Pressure regulator;

---Part 5.Check valve, shuttle valve, double pressure valve (and valve), one-way throttle valve and quick discharge valve.

This document is equivalent to ISO.19973-5.2015 "Test and Evaluation of Reliability of Pneumatic Components Part 5.Check Valves, Shuttle Valves, Double Pressure

Valve (and valve), one-way throttle valve and quick exhaust valve".

This document has made the following minimal editorial changes.

---In order to coordinate with the existing standards, the standard name is changed to "Pneumatic component reliability assessment method Part 5.check valve, shuttle valve, double

Pressure valve (and valve), one-way throttle valve and quick discharge valve".

Introduction

In a pneumatic system, power is transmitted and controlled by compressed air in the loop. The pneumatic system consists of a variety of components, which are various

An important part of the type of machines and equipment. Efficient and economical production requires highly reliable machines and equipment. GB/T 38206 aims to

Establish the reliability assessment method of pneumatic components, which consists of five parts.

---Part 1.General procedures. The purpose is to specify the general procedures, general test conditions, and calculations used to assess the reliability of pneumatic components.

Calculation methods, data evaluation methods, and requirements for writing test reports.

---Part 2.Reversing valve. The purpose is to specify the test equipment, test conditions, test procedures, and reliability for evaluating the reliability of the directional valve

Threshold value and processing method of test results.

---Part 3.Cylinder with piston rod. The purpose is to provide for the evaluation of the reliability of cylinders with piston rods (including single-acting and double-acting)

Test equipment, test conditions, test procedures, reliability thresholds and test results processing methods.

---Part 4.Pressure regulating valve. The purpose is to specify the test procedures, test equipment and reliability thresholds for the reliability evaluation of pneumatic pressure regulators

And how to deal with the test results.

---Part 5.Check valve, shuttle valve, double pressure valve (and valve), one-way throttle valve and quick discharge valve. The purpose is to specify the evaluation of check valves, shuttles

Test equipment, test conditions, test procedures, reliability thresholds for the reliability of valves, double-pressure valves (and valves), one-way throttle valves and quick exhaust valves

And the processing method of the test results.

This document is used to provide the necessary equipment and test conditions to evaluate check valves, shuttle valves, dual-pressure valves (and valves), one-way throttle valves, and quick-discharge valves.

The inherent reliability of the valve.

It is necessary for producers to understand the reliability of pneumatic system components in their equipment. The reliability of the components can be determined by laboratory tests.

Based on the reliability characteristics of the components, the manufacturer can build a system model and make adjustments to the service interval, spare parts inventory, and future improvements.

Make a decision.

There are three basic levels in determining component reliability.

a) Preliminary design analysis. finite element analysis (FEA), failure mode and consequence analysis (FMEA);

b) Laboratory tests and establishment of reliability models. physical mechanism of failure, reliability prediction, pre-production evaluation;

c) On-site data collection. maintenance report, quality analysis report.

Each level has its own application during the life of the component. Preliminary design analysis helps to identify possible failure modes and eliminate the cause of failure

Or reduce the impact of failure on reliability. When the component samples are obtained, the reliability test can be carried out in the laboratory and the initial availability can be determined.

Reliability. Reliability test, as a continuous evaluation of component reliability, often continues to the initial production and runs through the entire production process. exist

When the component continues to work and its failure data is available, field data can be collected.

Reliability Evaluation Method of Pneumatic Components

Part 5.check valve, shuttle valve, double pressure valve (and valve),

One-way throttle valve and quick exhaust valve

1 Scope

This document specifies tests to evaluate the reliability of check valves, pilot-operated check valves, shuttle valves, dual-pressure valves (and valves), one-way throttle valves, and quick-discharge valves

Equipment, test conditions, test procedures, reliability thresholds, and test results processing methods.

This document applies to the first failure of the above-mentioned types of pneumatic components without maintenance, except for some abnormal values.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations

Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to

This document.

ISO 1219-1 Graphical symbols and circuit diagrams of fluid power transmission systems and components-Part 1.Used for general purpose and data processing

Graphical symbols (Fluidpowersystemsandcomponents-Graphicalsymbolsandcircuitdiagrams-Part 1.

Graphicalsymbolsforconventionaluseanddata-processingapplications)

Note. GB/T 786.1-2021 Graphical symbols and circuit diagrams of fluid power transmission systems and components Part 1.Graphical symbols (ISO 1219-1.2012, IDT)

ISO 5598 Fluid power systems and components-Vocabulary (Fluidpowersystemsandcomponents-Vocabulary)

Note. GB/T 17446-2012 Fluid Power System and Components Vocabulary (ISO 5598.2008, IDT)

ISO 8778 pneumatic standard reference atmosphere (Pneumaticfluidpower-Standardreferenceatmosphere)

Note. GB/T 28783-2012 pneumatic standard reference atmosphere (ISO 8778.2003, IDT)

ISO 11727 Pneumatic control valve and other components of the port and control mechanism identification (Pneumaticfluidpower-Ident-

ificationofportsandcontrolmechanismsofcontrolvalvesandothercomponents)

Note. GB/T 32215-2015 pneumatic control valve and other components of the port and control mechanism identification (ISO 11727.1999, IDT)

ISO.19973-1 Pneumatic component reliability assessment method Part 1.General procedure (Pneumaticfluidpower-Ass-

essmentofcomponentreliabilitybytesting-Part 1.Generalprocedures)

Note. GB/T 38206.1-2019 Pneumatic component reliability assessment method Part 1.General procedure (ISO.19973-1.2015, MOD)

ISO 80000-1 Quantity and Units Part 1.General (Quantities and Units-Part 1.General)

IEC 60050-192 International Electrotechnical Terminology Part 192.Reliability [InternationalElectrotechnicalVocabulary

(IEV)-Part 192.Dependability]

Note. GB/T 2900.99-2016 credibility of electrotechnical terminology (IEC 60050-192.2015, IDT)

3 Terms and definitions

The terms and definitions defined in ISO 5598, ISO.19973-1, IEC 60050-192, and the following apply to this document.

Note. If there is a contradiction between the definition of a term in the four documents, the priority order is as follows. this document, ISO.19973-1, ISO 5598, IEC 60050-192.