Method for detecting hydrostatic pressure of thin-wall steel pipe under end face seal condition

A technology of thin-walled steel pipe and end face sealing, which is applied in the direction of applying stable tension/pressure to test the strength of materials, etc.

Inactive Publication Date: 2011-05-04
马利芳
View PDF3 Cites 37 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a detection method for the hydrostatic pressure of thin-walled steel pipes, which can ef

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for detecting hydrostatic pressure of thin-wall steel pipe under end face seal condition
  • Method for detecting hydrostatic pressure of thin-wall steel pipe under end face seal condition
  • Method for detecting hydrostatic pressure of thin-wall steel pipe under end face seal condition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0107] A method for testing hydrostatic pressure of thin-walled steel pipes with end face sealing, using a device that is a hydrostatic pressure testing machine for end face sealing steel pipes: including a testing machine body, a hydraulic system, a water pressure system and an electric control system.

[0108] The body of the testing machine includes the main body 1, the main test pressure head device 2, the first group of tension columns 32, the second group of tension columns 33, the rear fixed bracket device 3, the auxiliary test pressure head device 4, the idler device 5 and the clamping device 6 . The main body 1 and the auxiliary test head device 4 are connected through the two sets of tension columns 32 and 33 with the same structure.

[0109] The main body 1 is generally designed as a fixed type, which includes a front fixed bracket 8, a main hydraulic cylinder (also called an end face seal hydraulic cylinder) 9, two side hydraulic cylinders and a part of the facilit...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Lengthaaaaaaaaaa
Login to view more

Abstract

The invention relates to a method for detecting the hydrostatic pressure of a thin-wall steel pipe under the end face seal condition. Used equipment is an end face seal steel pipe hydrostatic pressure testing machine which comprises a testing machine body, a hydraulic system, a water pressure system and an electric control system. The method for detecting the hydrostatic pressure of the thin-wall steel pipe under the end face seal condition comprises the following steps of: 1) feeding the pipe and pre-clamping, namely respectively sealing the two pipe orifices of the pressure test thin-wall steel pipe by using two seal flat gaskets on a main pressure test head body and an auxiliary pressure test head body; 2) filling water, namely filling low-pressure water into the pressure test thin-wall steel pipe, exhausting, and closing a low-pressure water inlet valve, an exhaust port and a pressure relief port; 3) pressurizing, namely supplementing the water to the pressure test thin-wall steel pipe for pressurizing, pressurizing a main hydraulic cylinder synchronously, and determining a test pressure value according to a calculation formula; 4) stabilizing pressure, namely after the pressure of the water in the pressure test thin-wall steel pipe reaches a specified test pressure value, stabilizing the pressure until time specified by the test is up; and 5) relieving the pressure and discharging the water and the pipe. The detection method overcomes the defects of the conventional pipe making specifications, and the calculation process is simple, convenient and reliable.

Description

technical field [0001] The invention relates to the field of a thin-walled steel pipe hydrostatic pressure testing machine and a thin-walled steel pipe hydrostatic pressure detection method, in particular to a method for testing the pressure bearing capacity of a thin-walled steel pipe with a diameter-thickness ratio greater than 20 for transporting fluids such as oil and natural gas An end face seal hydrostatic pressure testing machine and a method for detecting hydrostatic pressure of a thin-walled steel pipe under the end face seal condition. Background technique [0002] In order to ensure the safe and reliable operation of steel pipes for oil and natural gas pipeline transportation, hydrostatic pressure tests must be carried out during the manufacturing process of steel pipes for transportation to test the pressure bearing capacity and reliability of steel pipes. At present, the hydrostatic pressure test equipment for steel pipes used by many steel pipe manufacturers is...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01N3/12
Inventor 马利芳
Owner 马利芳
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap