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On-site assembly method of bellows expansion joint
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A technology for on-site assembly and bellows, which is applied in the direction of auxiliary devices, auxiliary welding equipment, welding equipment, etc., can solve the problems of low efficiency and poor safety of bellows telescopic installation
Active Publication Date: 2021-11-26
JIANGSU FENGHE MACHINERY MFG
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[0003] This application overcomes the deficiencies of the prior art, provides a method for on-site assembly of bellows expansion joints, and solves the problems of low installation efficiency and poor safety of existing bellows expansion joints
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Embodiment 1
[0033] Such as figure 1 As shown, the application provides an on-site assembly method for bellows expansion joints, including the following steps:
[0034] Step 1: Pre-construction preparations, including raising the connection points and rolling the bellows, and armoring the bellows after the rolling is completed.
[0035] Step 2: After step 1 is completed, carry out the overall welding and the airtightness test of the bellows.
[0036] Step 3: After the test in Step 2 is completed, carry out end pipe splicing and corrugated pipehydraulic test, and at the same time carry out ring plate splicing and outer sheath splicing.
[0037] Step 4: After step 3 is completed, weld the short tube, bellows and outer protection components.
[0038] Step 5: After step 4 is completed, put the outer sheath in place, and then assemble the damping device.
[0039] Step 6: After step 5 is completed, carry out single external welding.
[0040] Step 7: Finally, carry out two sets of docking. ...
Embodiment 2
[0051] Such as figure 1 As shown, the difference between this embodiment and the embodiments lies in that specific implementation details will be given.
[0052] The application provides an on-site assembly method for bellows expansion joints, including the following steps:
[0053] Step 1: Pre-construction preparations, including raising the connection points and rolling the bellows, and armoring the bellows after the rolling is completed.
[0054] Step 2: After step 1 is completed, carry out the overall welding and the airtightness test of the bellows.
[0055] Step 3: After the test in Step 2 is completed, carry out end pipe splicing and corrugated pipe hydraulic test, and at the same time carry out ring plate splicing and outer sheath splicing.
[0056] Step 4: After step 3 is completed, weld the short tube, bellows and outer protection components.
[0057] Step 5: After step 4 is completed, put the outer sheath in place, and then assemble the damping device.
[0058] ...
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Abstract
A method for on-site assembly of bellows telescopic joints, comprising the following steps: Step 1: preparation before construction, including raising joint joints and rolling of bellows, and armoring of bellows after completion of rolling; Step 2: waiting for step 1 After the completion, carry out overall welding and bellows air tightness test; step 3: after step 2 test is completed, carry out end pipe splicing and bellows hydraulic test, and at the same time carry out ring plate splicing and outer sheath splicing; step 4: to be completed After step 3, weld the short tube, bellows and outer sheath assembly; step 5: place the outer sheath in place after step 4 is completed, and then assemble the damping device; step 6: perform single external sheath after step 5 is completed Welding; Step 7: Finally, two groups of butt joints are carried out.
Description
technical field [0001] The invention belongs to the field of mechanical assembly, and in particular relates to an on-site assembly method for bellows expansion joints. Background technique [0002] The cost of expansion joints is not much in the total investment of the project, but the reliability and safety of its quality are directly related to the safe operation of power generation, and its manufacturing quality should be highly valued. The product structure of the compound expansion joint is complex, the body is heavy, the caliber is large, and the displacement in the three directions is relatively large in the same type of project. Therefore, it is necessary to ensure the safety and reliability of the product performance and indicators. The safety factor, as well as the dimensional accuracy of the various parts assembled on site, and the process and welding methods used in the on-site welding should also be considered to ensure that the inspection and hydraulic pressure...
Claims
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Application Information
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