GB/T 17116.1-2018Pipe supports and hangers - Part 1: Technical specification (English PDF)

Foreword

GB/T 17116 "Pipe Supporting and Hanging" is divided into the following three parts.

--- Part 1. Technical specifications;

--- Part 2. Pipe connection parts;

--- Part 3. Intermediate connectors and building structure connectors. This part is the first part of GB/T 17116. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part replaces GB/T 17116.1-1997 "Pipe hangers and hangers Part 1. Technical specifications", and GB/T 17116.1-1997 In addition to the editorial changes, the main technical changes are as follows:

--- Modified the temperature classification of the pipeline system;

--- Increased the lower temperature limit for use of gray cast iron, malleable cast iron and ductile iron;

--- According to the degree of versatility, the typical standard components of the hangers are sorted and adjusted;

---Adjusted the safety factor of the allowable stress of the support and hanger components;

--- Modified the maximum load of the threaded boom according to the adjusted material allowable stress;

---The threaded boom with a nominal diameter greater than or equal to 56mm is modified to use a fine thread with a pitch of 4mm;

---Modified pipe clamp tolerance for forming;

---Specific requirements are given on the test methods and results of the support of hanger parts and their raw materials;

---Specific requirements for the performance test of the support and hanger;

--- Classification refines the inspection requirements for hangers and components;

1 Scope

China's national technical specification for pipe supports and hangers - the hardware that holds industrial piping up and lets it move. It is Part 1 of GB/T 17116 and specifies the basic requirements for the materials, design, manufacture, installation, testing, inspection, operation and maintenance of pipe supports and hangers, and it applies to the supporting and hanging devices of round-section metal pipe. Supports are the part of a piping system that is easiest to underestimate and most expensive to get wrong. A hot line grows: a steam main a hundred metres long moves a quarter of a metre between cold and operating condition, and every support along it has to carry the weight while permitting that movement in the directions it must occur and restraining it in the directions it must not. A rigid hanger where a variable spring belonged will load a nozzle beyond what the connected machine can take; a spring set to the wrong cold load will bottom out and become rigid at temperature; a guide missing where the code required one will let a line snake under thermal load or vibrate under flow. This part sets the framework for all of it: the materials allowed for each service temperature range, the design rules and load cases including the safety factors and the treatment of dynamic and seismic loads, the requirements for manufacture and for the spring elements in particular, the marking and the load scales that make a spring hanger adjustable and auditable, the installation requirements including cold setting and the removal of erection restraints, the testing and inspection regime, and the operation and maintenance checks by which a support system is verified once the plant is hot. Parts 2 and 3 give the components themselves. Issued on 15 March 2018 and in force since 1 October 2018, it replaces GB/T 17116.1-1997.

This part of GB/T 17116 specifies the basics of materials, design, manufacture, installation, testing, inspection and operation and maintenance of pipeline supports and hangers. Claim. This section applies to the support and hanger devices of round-section metal pipes.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T

90.1 fastener acceptance inspection GB/T 91 cotter pin GB/T 117 taper pin

GB/T 119.1 cylindrical pin not hardened steel and austenitic stainless steel

GB/T 119.2 cylindrical pin hardened steel and martensitic stainless steel

GB/T 150.2-2011 Pressure Vessels Part 2. Materials

GB/T 150.3-2011 Pressure Vessels Part 3. Design

GB/T 157 Geometrical Product Specifications (GPS) Cone taper and cone angle series

GB/T 191 packaging storage and transportation icon

GB/T 193 Ordinary Thread Diameter and Pitch Series

GB/T 196 basic thread basic size

GB/T 197 ordinary thread tolerance

GB/T 228.1 tensile testing of metallic materials - Part 1

GB/T 229 metal material Charpy pendulum impact test method

GB/T 231.1 Brinell hardness test for metallic materials - Part 1. Test methods

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Pipe support hanger pipesupportsandhangers Various components or devices used to withstand pipeline loads, limit pipeline displacement, control pipeline vibration, and transfer loads to the load-bearing structure (Can be referred to as "supporting hanger").

3.2 Constant support hanger constantsupportandhanger It is used to bear the vertical load of the pipeline, and its bearing capacity does not change with the change of the vertical displacement of the pipeline at the supporting point, that is, the load remains basically constant. Fixed hangers.

3.3 Variable force spring support hanger variablespringsupportandhanger The elastic support hanger used to withstand the vertical load of the pipeline and its bearing capacity changes with the vertical displacement of the pipeline at the branch point.

3.4 Rigid hanger rigidhanger A hanger used to withstand the vertical load of the pipe and constrain the vertical displacement of the pipe at the point of attachment.

3.5 Sliding bracket slidingsupport A bracket that supports the pipe on a sliding floor to withstand the vertical load of the pipe and constrain the vertical displacement of the pipe at the point of attachment.

3.6 Rolling support hanger rolesupportandhanger A support for supporting the pipe on the rolling member to withstand the vertical load of the pipe and constrain the vertical displacement of the pipe at the point of attachment.

3.7 Guide guide A device for guiding the displacement of a pipe in a predetermined direction to limit displacement in other directions. Horizontal pipe guides can also withstand pipes Vertical load.

3.8 Limit device restraint A device used to constrain or partially limit the displacement of a pipe system in one or more directions at a point of attachment. It usually does not bear the vertical of the pipe Load.

3.9 Fixed bracket anchor A rigid device used to completely restrain the pipe at the point of attachment without any line and angular displacement.

3.10 Damping device swaybrace It is used to control the low-frequency high-frequency sloshing or high-frequency low-amplitude vibration of the pipeline, and has certain constraints on the thermal expansion or contraction of the piping system.

3.11 Damping device snubber It is used to withstand the seismic load or impact load of the pipeline, and to control the high-speed vibration displacement of the pipeline, while allowing the pipeline to be freely expanded and contracted. Device.

3.12 Integral pipe joints integralpipeattachments Including hangers, guide plates, ear plates, branch pipes (trunken shafts), brackets, saddle supports and skirt supports, etc. Forging is made as a whole.

3.13 Non-integral pipe joint non-integralpipeattachments Supporting hanger components such as pipe clamps, pipe clamps, pipe rings, pipe supports and U-shaped pipe clamps are connected to the pipe or its insulation layer by means of clamping or support. connection.

4 General

4.1 The materials, design, manufacture, installation, testing, inspection and operation and maintenance of pipeline supports shall be in accordance with the provisions of this standard. The requirements of the current national regulations related to the pipeline.

4.2 Pipe hangers and hanger types such as constant force hangers, variable force spring hangers, rigid hangers, sliding brackets and rolling supports and hangers can be used to withstand pipes The occasion of the road load.

4.3 Pipe hangers and hanger types such as guides, limit devices and fixed brackets can be used to limit pipe displacement.

4.4 Damping devices and damping devices can be used to control the vibration of the pipeline.

4.5 When designing and selecting pipe supports, the pipe system can be classified according to Table 1 according to the working temperature range of the pipeline. Table

1 Pipeline system classification Piping system piping system grading operating temperature range Heat pipe A-1 >50°C~300°C A-2 >300°C~425°C A-3 >425°C~550°C A-4 >550°C Normal temperature pipe B >20°C~50°C Cold pipe C-1 >0°C~20°C C-2 >-20°C~0°C C-3 >-40°C~-20°C C-4 <= -40 ° C (low temperature range)