Oil-water interface detector based on field programmable gate array (FPGA)
An oil-water interface and detector technology, which is applied to the liquid level indicator for physical variable measurement, etc., can solve the problems of complex process and long period of cavity making process, and achieve the effect of high measurement accuracy, large dynamic range and reduced area.
Inactive Publication Date: 2011-11-23
吴爱平 +1
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Problems solved by technology
Since the underground salt cavern storage is usually about 1000 meters underground, the cavity building process has a long period and complicated process. The existing surface storage tank oil-water interface detector cannot be directly applied to the oil-water interface detection in the process of underground salt cavern cavity building.
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[0023] refer to Figure 1-3 , the specific embodiment adopts the following technical scheme: it comprises the downhole instrument part A and the surface instrument part B, the downhole instrument part A and the surface instrument part B are connected by a 7-core cable, 1# and 4# cable cores are responsible for power supply, 2# and The 5# cable core is responsible for transmitting the commands issued by the surface instruments and the measurement data uploaded by the downhole instruments. The rest of the cable cores are free, and the cable sheath is grounded.
[0024] The downhole instrument part A includes a relay drive controller 11, a signal conditioning circuit 12, a sensor 13, a downhole Mann code conditioning circuit 14 and a downhole FPGA module 15, and the relay drive controller 11 and the signal conditioning circuit 12 are connected to the downhole FPGA module 15 , the downhole FPGA module 15 is connected to the downhole Mann code conditioning circuit 14, and the downh...
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The invention discloses an oil-water interface detector based on a field programmable gate array (FPGA) and relates to the technical field of instruments. The oil-water interface detector comprises an underground instrument part and a ground instrument part; the underground instrument part is connected with the ground instrument part through a seven-core cable; a cable core No.1 and a cable core No.4 are used for supplying power; a cable core No.2 and a cable core No.5 are used for sending commands transmitted by the ground instrument and measurement data uploaded by the underground instrument; other cable cores are spare; and cable sheaths are earthed. The underground instrument part comprises a relay driven controller, a signal conditioning circuit, a sensor, an underground Manchester code circuit and an underground FPGA module; and the ground instrument part comprises a key, a depth coding wheel, a ground FPGA module, a computer, a liquid crystal display (LCD), an audible and visual alarm and a ground Manchester code conditioning circuit. The oil-water interface detector is suitable for oil-water interface defection in an underground salt cavern, has the function of instrument self-checking, can work stably for a long time, is high in measurement accuracy, and wide in a dynamic range, and can greatly shorten the occupied area of a system, and improve the integrated level and stability of the system.
Description
Technical field: [0001] The invention relates to the technical field of instruments and meters, in particular to an FPGA-based oil-water interface detector. Background technique: [0002] Underground salt cavern storage has become the preferred storage solution for the construction of oil reserve bases due to its advantages of large storage scale, high safety and small footprint. Underground salt cavern storage has a history of decades in developed countries, but it is a new technology developed in China in recent years, mainly used to store natural gas and oil. Usually, the underground salt cavern is a space suitable for storage of items formed by manual control. During the cave building process, the shape of the top plate of the cavern is generally controlled by adjusting the height of the oil-water interface. Therefore, the research on the detection of oil-water interface in salt cavern construction has great practical significance and huge economic value. [0003] At p...
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IPC IPC(8): G01F23/26
Inventor 吴爱平付青青
Owner 吴爱平