Corrugated pipe?expansion joint internal pressure bursting test device

A technology of blasting test and blasting test bench, which is applied in the field of bellows expansion joints, can solve problems such as unreliable axial constraints, and achieve the effects of strong versatility of the device, avoiding protrusion deformation, and easy handling

Inactive Publication Date: 2013-03-20
SHANGHAI SPACE PRECISION MACHINERY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the technical problem of the unreliable axial restraint of the traditional fixing method, the present invention provides a bellows expansion joint internal pressure blasting test device, which can truly reflect the working state and internal pressure blasting test of the bellows expansion joint when internal pressure blasting occurs. Reliable axial restraint of the test piece at the same time, improve the efficiency of the internal pressure burst test of the expansion joint, and realize the generalization of the internal pressure burst test device

Method used

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  • Corrugated pipe?expansion joint internal pressure bursting test device
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  • Corrugated pipe?expansion joint internal pressure bursting test device

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Embodiment Construction

[0023] The structure diagram of the preferred embodiment of the present invention is shown in image 3 :

[0024] The upper load-bearing beam 201 and the lower load-bearing beam 2013 are the main load-bearing parts of the device, which bear the axial load generated by the bellows expansion joint 207 in the blasting test; And bolt 2010 is fixed on the column 204.

[0025] like Figure 4 As shown, the blocking cover 206 is connected to the flange of the bellows expansion joint 207 through bolts, and a sealing ring 2023 is placed between the two to realize sealing; disc connection, a sealing ring 2020 is placed between the two to achieve sealing; image 3 As shown, bolts 205 are used to fix the blocking cover 206 on the liftable pressure plate 203; several pressure plates 209 are used to fix the blocking cover 208 with the filling port on the fixing plate 2012; the blocking cover 208 with the filling port has a Threaded interface for pressurized hose 2017 connection.

[0026...

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Abstract

The invention relates to a corrugated pipe?expansion joint internal pressure bursting test device. According to the invention, the corrugated pipe?expansion joint is fixed in a steel frame structure; a water pressure required by testing is charged; and a bursting test is carried out. Therefore, working status of the corrugated pipe?expansion joint at internal pressure blasting can be truly reflected, and reliable axial restraining can be provided for a tested part during internal pressure bursting. The corrugated pipe?expansion joint internal pressure bursting test device provided by the invention comprises main bearing parts which are an upper bearing beam (201) and a lower bearing beam (2013), a column (204), a blocking cover (206), sealing rings (2023, 2020), a blocking cover with a filling port (208), an elevation pressure plate (203), a pressure board (209), a fixing plate (2012), a pressurizing hose (2017), a hydraulic bursting test stand (2019), a pressure plate mount (2018), and a fixing element. The device provided by the invention has the advantages of fast fixing, high versatility, high bearing capacity, convenient moving, and the like.

Description

technical field [0001] The invention relates to an internal pressure blasting test device, which is especially suitable for bellows expansion joints. Background technique [0002] Bellows expansion joints such as figure 1 As shown, it is a cylindrical thin-walled corrugated shell with multiple transverse corrugations, which is a kind of elastic compensation element that can expand and contract freely, and can effectively compensate for axial and transverse deformation. It has been used in petrochemical, electric power , construction, metallurgy, machinery and other industries have been more and more widely used. [0003] Internal pressure blasting is one of the failure modes of bellows expansion joints. In the development process of the bellows expansion joint, it is necessary to verify the design burst pressure of the bellows expansion joint through the internal pressure burst test. Test process: Both ends of the test piece are sealed and fixed on the special test fixtur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12G01M13/00
Inventor 韦超铁文军石正波袁杏杨学勤徐爱杰
Owner SHANGHAI SPACE PRECISION MACHINERY RES INST
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