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High-pressure water jet device based on welding residual stress regulation and control and using method

A high-pressure water jet, residual stress technology, applied in the direction of abrasive feeding device, used abrasive processing device, measuring device, etc., can solve the problems of lack of, reduce welding residual stress, lack of pressure testing device, etc., to ensure Accuracy, simple structure, guarantee the effect of strengthening effect

Active Publication Date: 2021-04-16
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing high-pressure water jet strengthening devices are improved on the basis of traditional high-pressure water jet cleaning and cutting devices, lack of effective pressure testing devices, and the impact pressure distribution of water jet on the target surface is not clear, which is not good In addition, most of the current high-pressure water jet devices use high-pressure hoses to transport the high-pressure water jet beam to the nozzle position, and the actual water jet pressure at the nozzle inlet also lacks effective pressure testing equipment. Measurement, and due to the loss in the fluid flow process, the actual pressure flowing to the nozzle part is reduced compared with the water jet pressure generated by the high-pressure water generator, and the water jet pressure cannot be accurately controlled according to the test requirements

Method used

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  • High-pressure water jet device based on welding residual stress regulation and control and using method
  • High-pressure water jet device based on welding residual stress regulation and control and using method
  • High-pressure water jet device based on welding residual stress regulation and control and using method

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Effect test

Embodiment 1

[0042] refer to figure 1 , this embodiment provides a high-pressure water jet device based on welding residual stress control, including a body 1, a nozzle system 2, a high-pressure generating system 3, a pressure transmitter 4 and a computer 5, and the high-pressure generating system 3 is arranged on a part of the body 1 Side, the body 1 includes a base 11, a column 12 and a worktable 13, the column 12 is vertically fixed on one side of the base 11, the workbench 13 is arranged above the base 11, the nozzle system 2 is arranged on the side of the column 12 through the nozzle fixing table 21 and Located above the workbench 13 , the nozzle system 2 is connected to the high pressure generating system 3 through pipelines, the pressure transmitter 4 is arranged on the side of the base 11 , and the pressure transmitter 4 is connected to the computer 5 .

[0043] refer to figure 2 and image 3 The above-mentioned body 1 also includes an X-direction slide 14, a Y-direction slide 1...

Embodiment 2

[0061] The difference between this embodiment 2 and embodiment 1 is that the structure of a high-pressure water jet device based on welding residual stress regulation provided by this embodiment is the same as that of embodiment 1. In this embodiment, the high-pressure water jet operation is performed on the welded components When it is detected that the actual effective water jet pressure value received by the welded component deviates greatly from the required theoretical water jet pressure range, the operator controls the water jet pressure generated in the high pressure generating system 3 to remain unchanged, and is controlled by the computer 5 The distance between the nozzle system 2 and the welded component is used to adjust the actual effective water jet pressure value received by the welded component, and the distance measuring sensor simultaneously records the distance between the nozzle 24 and the welded component. For example, when the actual effective water jet pre...

Embodiment 3

[0063] The difference between this embodiment 3 and embodiment 1 and embodiment 2 is that no welding components are placed on the workbench in this embodiment, and the film pressure distribution sensor 61 is used to measure the high-pressure water jet directly acting on the target surface of the film pressure distribution sensor 61 The actual impact pressure data on the surface and the total high-pressure water jet impact pressure data detected by the metal resistance strain gauge 64 can obtain the actual impact pressure distribution curve to analyze the actual pressure distribution of the high-pressure water jet on the target surface and the high-pressure water jet along the jet flow. The gradual attenuation from the center to the surrounding area, the actual effective water jet pressure and the actual effective water jet area of ​​the jet center can be obtained through the actual pressure distribution curve, as shown in Figure 9 As shown, the abscissa is the distance from th...

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Abstract

The invention discloses a high-pressure water jet device based on welding residual stress regulation and control and a using method thereof. The water jet device comprises a machine body, a nozzle system, a high-pressure generation system, a pressure transmitter and a computer. The machine body comprises a base, a stand column and a workbench, the stand column is vertically fixed to one side of the base, and the workbench is arranged above the base. The nozzle system is arranged on one side of the stand column through a nozzle fixing table and located above the workbench, the nozzle system is connected with the high-pressure generation system through a pipeline, and the pressure transmitter is connected with the computer. A surface pressure detection assembly is arranged above the workbench, and a nozzle inlet pressure detection assembly is arranged at the water inlet end of the nozzle system. According to the device, the pressure detection assembly is arranged to detect and collect the actual water jet impact pressure borne by a welding component, the water jet axis dynamic pressure at the inlet position of a nozzle and the water jet pressure of the high-pressure generation system, and the water jet pressure can be adjusted in time according to detection data.

Description

technical field [0001] The invention relates to the technical field of high-pressure water jet devices, in particular to a high-pressure water jet device based on welding residual stress control and a method of use. Background technique [0002] High-pressure water jet refers to pressurizing water to hundreds of atmospheric pressures through a high-pressure water generating device, and then converting it into a high-speed fine water jet through a spray device with a small aperture. The speed of high-pressure water jets is generally more than twice the Mach number, has huge striking energy, and can complete different types of tasks. [0003] In recent years, high-pressure water jet technology has been gradually applied to welded structures by domestic and foreign researchers to reduce welding residual stress and achieved certain results. However, most of the existing high-pressure water jet strengthening devices are improved on the basis of traditional high-pressure water je...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24C3/04B24C5/04B24C7/00B24C9/00G01D21/02
Inventor 蒋文春郑红祥罗云张显程涂善东
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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