Gas and heat research and discussion 0 type gas storage tank piston tilt fiber inspection system Yu Jun, Li Weilai, Zhang Yu Wuhan University of Technology Fiber Center. Wuhan, Hubei, 43, 7, the total measurement plan is based on the calculation method and computer software design. , 0, through the sauce (2), å°¥ 喟逦 喟逦 喟逦 é¤ é¤ é¤ é¤ é¤ é¤ é¤ é¤ é¤ é¤ é¤ é¤ é¤ é¤ é¤ é¤ é¤ é¤ é¤ é¤ é¤ é¤ é¤ é¤ é¤ é¤ é¤ é¤ é¤ é¤ é¤Compared with the multilateral dry gas storage tank, it has many advantages such as short construction period and convenient steel maintenance, and has become a key tank type in dry gas storage tanks. It has developed rapidly in recent years. 1. In, 0, type gas storage tanks In actual operation, there is a problem that the piston tilt monitoring device is difficult to read. Although four mechanical measuring scales are designed on the piston struts inside the gas storage tank, the operator has to enter the gas storage tank to read the inclination of the piston operation. Since the personnel must enter a series of protective measures to enter the inside of the gas storage tank to avoid gas poisoning at high places, the operator, especially the night shift personnel, can obtain the data of the piston tilt, which is very unfavorable for the safe operation of the gas storage tank. The fiber optic sensor has the characteristics of high precision and high sensitivity, and is not subject to electromagnetic interference. Therefore, we use the mature technical advantages of the fiber optic tank gauge to monitor the operating height of the piston of the gas tank, and propose to install several fiber optic tank gauges around the piston. By monitoring the height difference of the piston operation, the inclination of the piston can be measured very accurately. Measuring principle of the detection of the inclination of the piston The measurement principle of the optical fiber tank level meter 2 The optical fiber tank level meter is installed under the gas storage tank by the mechanical movement part of the tank position sensor, the optical fiber encoder optical fiber photoelectric converter and the intelligent submeter. The two sets of winches are connected to the piston and the tamper by wire ropes, respectively. When the change of the tank position drives the wire rope to move up and down, the weight also rises or falls accordingly. The wire rope changes the upper movement of the piston to the rotation of the winch. The winch is machined accurately, and the length of the wire rope wound for one week corresponds to the number of teeth of the optical disk. The winch rotation signal is adjusted by the optical milk disk and the fiber encoder to adjust the continuous infrared light input by the fiber optic probe, and the generated optical pulse is multiplied back to the optical cable. The optical signal is processed by the photoelectric converter and the secondary instrument to obtain accurate information on the rotation of the winch, thereby measuring the height of the jam. The detection scheme of the piston inclination is a coffee-type gas storage tank, which is a service and is regarded as a rigid device. It will only tilt and will not be twisted and bent. Along the outer edge of the piston, one measuring point is set every 60th, that is, one optical tank is installed with six optical fiber tank gauges, and each of the three diameters of the piston plane is connected to the height of each point through the optical cable to the instrument. The room is visually converted and connected to the computer system by the secondary instrument. The secondary instrument data analysis compares and judges that if the height difference between the ends of any diameter of the piston in the operation of the gas tank exceeds the safety setting, the computer system emits an audible and visual alarm and outputs a group switch contact signal to achieve safe and stable control of the tank position and piston. The purpose of the operation. Piston tilt detection requires a height difference of 80 to alarm. According to the testing of the leveling department, when considering the impact of the environment. The measurement accuracy of the fiber optic tank gauge can reach ±, late, that is, 10 10, 1 long wire rope mountain will produce the error of 2381 in thermal expansion. The straight line of the wire rope is only the tensile force in the state of 241 and is enclosed in the pipe and the wire box, so the influence of the wind speed on the length of the wire rope of each can position meter is negligible. The accuracy of the device can better meet the needs of piston tilt detection. 2 The mathematical cheek shape difference does not exceed 80, the limit can ensure that all other points are within the limits. But hey. These two points are random and may occur at the 6 points measured. So to find the lowest point and the maximum height difference it should pay through the 6 points tested. Between the points. Suppose the lowest point is 5, the second low is 4, and the line between ugly 4 and ugly 5 is ugly, which is the actual lowest point of the hypothesis. From, 4 and the direction, the vertical line, the intersection, the 1 to, and the 5. 〃 4 and the height of the ugly 4 are 5 and, also, the position is set to the radius of the piston, and 0 is the height of the center of the piston, which is the actual The height of the lowest point, the angle formed by the heart is the angle between the plane of the piston and the horizontal plane is 0. In the side view, it can be seen that the fiber optic tank level gauge is measured between the two points corresponding to each point 180 of the heart opening. When the height difference exceeds 8, it is necessary to report 1 over 90, and 1 will start the 1 art operation correction. There is always a minimum point in the process of piston tilting and it is paid for. The highest point, and the two points are 180. As long as the high points of these two points are guaranteed, 1 is entered into the above formula, and multiplied by 2 to get the maximum height difference sought. 3 system software system software using configuration king 6, 3 and 6 mixed media programming. The use of configuration software to develop automation software has the characteristics of easy development and simple versatility, and is shorter than the development period of computer language, and the accuracy is small. The signal of the piston height of the gas tank is sent to the optical fiber tank level meter through the optical fiber tank sensor. And by the sub-meter on the fiber optic tank position meter. Only the 3485 signal from the fiber optic tank position meter is converted into a 3232 signal through the 050 module of the 0 ship, and sent to the serial port of the industrial computer, which is received by the program called the program. Dynamic Data Exchange 00 is a complete communication protocol on the platform. It allows the application to exchange and send instructions to each other. When the direction 1 party asks for data. The party making the request is the customer, and the party providing the data is the server. Kingview can exchange dynamic data with a variety of applications, such as I! asicfllM iciTKiKxrel6.j, as long as the three ID names are applied to the application and the item can be achieved after the 13-cart signal is received by the flight program. Stored in 6 variables and displayed in 6 text boxes. Since the processing of the data in 8, is easier than in the configuration king, the data is processed in the equation 8 above using the formula in the above mathematical model. In the Kingview dictionary, 7 10 variables are established, 6 10 variables receive the tank height of 6 points on the piston, and another 1 variable receives the real-time monitoring alarm and report printing after receiving the calculation. The trend curve and alarm window can display parameters such as piston height and inclination in real time. The technician can monitor the status of the piston operation through the air tank monitoring main screen. The height of the piston is changed. When the blood is drawn, the movement of the blood 1 will dynamically move, so that the technician can intuitively see the running height of the piston, and the exact parameters on the left side of the screen. The maximum height difference of the piston can be scrolled to reflect the change of the variable. When the height difference of the piston is not within the normal range, the program calls, 73, the function is driven, and the sound and light alarm can be realized. In the alarm window, the value of the variable time variable name and the limit value are displayed, and the high alarm high alarm is realized, and the safety is higher. Record data changes during operation and store historical data on the hard disk for future query and analysis. The report can choose to query the 6-point height and the maximum height difference of the piston. You can also choose to query the price of these variables for a certain period of time. 1 Call the configuration number of the Kingview and make a 1 to print the report. 4 Conclusion Gas cylinder piston tilting fiber inspection system adopts fiber optic tank position guessing technology, accurate data acquisition, mathematical model simple pull, using Kingview as a development platform, real-time monitoring of alarm data query and other functions, and user interface is convenient to operate Easy to learn. The system also has good expandability and maintainability, and can operate stably and reliably, so that the operator can grasp the tilting condition of the piston in real time, and can control the inlet and outlet air speed in time to prevent a large piston tilt, thereby avoiding 1 Therefore, the cow is sent. The system reduces the labor intensity of people and improves the management level. Deng Maozhong Guo Liang is the type of this dry gas cabinet in Li Weilai, Wang Weiping. High-precision fiber optic telemetry technology knives for wet gas cabinets. Automated instrument, 199512151 I3j Wang Changli. 1 industry control computer system design 4 coin elbow 1. Beijing Electronics Industry Press, 1993. Fan Yizhi, Chen Liyuan. 6 with only 3232 serial communication control elbow. Beijing Tsinghua University Press, 2002 Huang Tianyi. The secondary development tool of the configuration software in the industrial monitoring system. Journal of Wuhan University of Hydraulic and Electric Engineering, 1999, 27779. Wang, based on Kingview's oil tank monitoring system design. Journal of Wuhan University of Science and Technology. Information and Management Engineering Edition, 20, 1357. Seven cattle. To study from the technical software and the enemy.
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