Automatic loading control system for pressure test of pressure-bearing equipment
A technology of pressure-bearing equipment and pressure test, applied in the direction of applying stable tension/pressure to test the strength of materials, measuring devices, instruments, etc., can solve the problems of a large number of manpower, accuracy and safety, etc., to achieve The effect of weakening the shock, realizing the safety evaluation function, and meeting the upper limit of the pressure test
Pending Publication Date: 2020-09-29
JIANGSU YONGDA CHEM EQUIP CO LTD +1
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Problems solved by technology
[0003] At the same time, the current domestic pressure vessel manufacturing industry is generally at the level of extensive management. Most of the pressure test is carried out manually, and the accuracy and safety cannot be guaranteed. Completing the pressure test of the container requires a lot of manpower and time investment. Therefore, a terminal device that applies mature monitoring and control technology to the pressure test is needed in this link, which improves the convenience and accuracy of the operation and greatly improves the efficiency. , while saving costs, it is also beneficial to standardize the process regulations of the withstand voltage test
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[0067] The measured strain is 0.0005, and the elastic modulus of the material of the pressure-bearing equipment is 2*10 5 MPa;
[0068] According to the formula:
[0069] P=a*b=0.0005*2*10 5 =100 MPa
[0070] Wherein, P is the stress value, and according to the GB150 design standard, the stress value should be less than 0.9 times the yield strength, and the yield strength of the material is 235 MPa.
[0071] 235*0.9=211.5 MPa
[0072] According to the above stress value should be less than 0.9 times the yield strength, multiply 235 by 0.9 to get the calculation result of 211.5, that is, the stress value should be less than 211.5 MPa. According to the calculation result, the stress value is 100 MPa, and 100 MPa is less than 0.9 times the yield strength, it can be known that there is no potential safety hazard in the pressure test of the pressure-bearing equipment.
[0073] The rest are the same as above.
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Abstract
The invention discloses an automatic loading control system for pressure test of pressure-bearing equipment, and belongs to technical field of control systems. The system comprises a measurement module, an analysis and calculation terminal, a pressure control module, a data acquisition and recording module, a remote monitoring module and a camera, the measuring module is used for measuring and collecting a pressure value and the stress change of the pressure-bearing equipment during the pressure test of the pressure-bearing equipment. The measured pressure value and stress are transmitted to the analysis and calculation terminal; the analysis and calculation terminal is used for comparing the measured pressure value with a process curve obtained by manually inputting a numerical value, andobtains a stress value according to stress calculation. The system is scientific, reasonable and safe and convenient to use, the pressure control module is used for enabling a pressure test pump to control opening and closing of an electromagnetic valve according to a comparison result, the data acquisition and recording module is used for completing data acquisition and storage at a fixed sampling frequency, and the camera is used for performing video acquisition on a pressure-resistant experiment process.
Description
technical field [0001] The invention relates to the technical field of control systems, in particular to an automatic loading control system for withstand voltage tests of pressure equipment. Background technique [0002] Jiangsu is a major manufacturing province in my country, and the total amount of pressure vessels manufactured in Jiangsu can account for almost one-third of the total pressure vessels manufactured in the country. In the southern and central parts of Jiangsu, there are many container manufacturing units of different sizes. The accumulation of daily work and the visits and investigations of related companies have found that most of the pressure vessel manufacturers in the province, including several top-ranked manufacturers in the country, conduct pressure tests on pressure vessels, almost all of which are mainly manual operation and control. However, the technology and methods are still in the state of decades ago, and the progress of measurement and control ...
Claims
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IPC IPC(8): G01N3/12
CPCG01N3/12G01N2203/0019
Inventor 邵虎跃陆惠龙
Owner JIANGSU YONGDA CHEM EQUIP CO LTD