Hydraulic pipe expander suitable for pipe fittings of different specifications

Abstract

The invention relates to the field of hydraulic pipe expanding equipment, and discloses a hydraulic pipe expander suitable for pipe fittings of different specifications. The hydraulic pipe expander comprises a pipe and a pipe plate which need to be connected in a pipe expanding manner, and further comprises a pressurizing pipe extending into the pipe, and is characterized in that one end of the pressurizing pipe is fixedly connected with a positioning disc positioned in the pipe, the other end of the pressurizing pipe is fixedly sleeved with a pipe head end located on the outer side of the pipe, the pressurizing pipe is further movably sleeved with a sliding disc located between the positioning disc and the pipe head end, and an elastic rubber sleeve is fixedly connected between the sliding disc and the positioning disc. According to the hydraulic pipe expander suitable for the pipe fittings of different specifications, through the structural design of a movable outer limiting sleeve,a first inner baffle and a second inner baffle on the pressurizing pipe, the tightness state of the elastic rubber sleeve between the outer limiting sleeve and the positioning disc can be tried to beadjusted according to the inner side diameters and the expanded connection lengths of the pipe and the pipe plate, and the hydraulic pipe expander is suitable for expansion work of pipes and pipe plates of different specifications.

Description

technical field [0001] The invention relates to the field of hydraulic pipe expansion equipment, in particular to a hydraulic pipe expander suitable for pipe fittings of different specifications. Background technique [0002] The hydraulic tube expander is a tool for hydraulic expansion in the manufacture of heat exchangers in petrochemical, electric power, boiler, nuclear power, refrigeration and other fields. The expansion is realized under the pressure of the hydraulic tube expander. The hydraulic expansion process is also called soft expansion. ,A large number of pipe joints can be expanded at one time. The hydraulic pipe expander uses when the ultra-high hydraulic pressure enters the high-pressure resistant elastic rubber body through the high-strength alloy core rod, the high-pressure resistant elastic rubber body generates radial pressure, which is enough to make the pipe The material undergoes plastic deformation, thereby realizing the expansion joint between the tub...

AI Technical Summary

Problems solved by technology

[0003] However, when the existing hydraulic tube expander is used, the length and diameter of the elastic rubber are fixed, so when expanding the tubes and tube sheets of different specifications, elastic rubber of various specifications is required for spare parts and replaced , resulting in low production efficiency and high cost

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