High-temperature and high-voltage resistance subsection capacitive level transmitter

Abstract

The invention relates to a high-temperature and high-voltage resistance subsection capacitive level transmitter, which comprises an electric signal processor and a sensor, wherein the sensor is provided with a tubular rigid insulation sleeve with the sealed support bottom end, a plurality of mutually insulated tubular electrodes are arranged from bottom to top in a way of tightly pasting the inner wall of the sleeve in the tubular rigid insulation sleeve, each section of tubular electrode is respectively and electrically connected with the electric signal processor through a connection conducting wire, a flange-shaped connecting body is arranged at a position of the outer wall of the tubular rigid insulation sleeve near the near opening end, and a sealing pad is arranged between the flange-shaped connecting body and the tubular rigid insulation sleeve. The high-temperature and high-voltage resistance subsection capacitive level transmitter has the advantages that the structure is simple and reliable, the simultaneous measurement of various medium interfaces in a container can be realized, in addition, different installation requirements can be met, and the transmitter belongs to the ideal high-temperature and high-voltage resistance subsection capacitive level transmitter.

Description

technical field [0001] The invention relates to a segmented capacitive level measuring device for measuring the height of the material interface in a container such as high temperature and high pressure, specifically a high temperature and high pressure segmental capacitive level transmitter, which is suitable for real-time measurement of high temperature The interface of different materials in containers such as high pressure and high pressure. Background technique [0002] In industrial production, it is often necessary to conduct real-time and continuous monitoring of the medium interface in the container under high temperature and high pressure to ensure the safety and continuity of the process, such as the oil-water and oil-gas interface in the high-pressure vessel of the refinery, and the boiler of the power plant water vapor interface etc. Due to the limitation of extreme conditions such as high temperature of hundreds of degrees Celsius and high pressure of tens of ...

AI Technical Summary

Problems solved by technology

Due to the limitation of extreme conditions such as high temperature of hundreds of degrees Celsius and high pressure of tens of megapascals, some existing capacitive interface measurement devices, such as "a multi-phase level sensor" previously proposed by the inventor of this patent, Patent No. For 02110211.2, etc., due to the lack of targeted high temperature and high pressure design, it cannot be used in these extreme measurement environments; Chinese patent 200710163870.0 proposes a technical solution for continuous measurement of water vapor in a boiler drum. However, its existence The following defects: (1). The large-scale metal measuring cylinder and the insulating sheath tube are sealed and fixed at both ends. Due to the difference in expansion coefficient, on the one hand, the sealing is complicated and difficult. On the other hand, it is easy to cause leakage or leakage when the temperature changes. Damage to the insulating sheath

(2) The measurement of the multi-media interface cannot be realized, for example, when the container is filled with a mixture of water, oil and gas

[0003] In addition, the provided structure can only be measured through the bypass pipeline, and the characteristics of the medium introduced into the measuring cylinder and the medium in the container are prone to differences, and the measurement accuracy and installation method are limited

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