Self-evaporator liquid level measuring device based on dual-pipe air blowing method

Abstract

The invention discloses a self-evaporator liquid level measuring device based on a dual-pipe air blowing method. In the device, a first air blowing pipe (1), a second air blowing pipe (2) and a self-evaporator (9) are connected; the first air blowing pipe (1) and the second air blowing pipe (2) extend into the bottom of the self-evaporator (9); the height difference of the bottom ends of the first air blowing pipe (1) and the second air blowing pipe (2) is h2; a pipeline which is connected with the first air blowing pipe (1) is internally provided with a first air blower (3), a first separation tank (7) and a first differential pressure transmitter (5); a pipeline which is connected with the second air blowing pipe (2) is internally provided with a second air blower (4), a second separation tank (8) and a second differential pressure transmitter (6); and the first air blower (3), the second air blower (4) and an air source are connected. The self-evaporator liquid level measuring device provided by the invention is widely applied to an aluminum oxide plant, thus pollution is reduced effectively, the plant environment is protected, and better working environment is created for workers.

Description

technical field [0001] The invention relates to a self-evaporator liquid level measuring device. Background technique [0002] At present, in the dissolution section of alumina plants at home and abroad, the liquid level measurement of the self-evaporator is almost always measured by a ray-type liquid level gauge (see attached figure 1 shown). The measurement system usually consists of the following parts: [0003] a. Radiation source (usually Cs 137 ) [0004] b. Detectors (usually ionization chamber detectors or scintillation detectors) [0005] c. Transmitter [0006] The working principle of the measurement system is: use the radiation source to emit a fan-shaped nuclear ray to penetrate the measured medium. Under the condition of a certain density of the measured medium, the higher the liquid level is, the more the nuclear ray is absorbed. The less the amount of radiation, the height of the liquid level is calculated by the transmitter. [0007] The advantages an...

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Problems solved by technology

[0015] The technical problem to be solved by the present invention is to provide a self-evaporator liquid level measuring device with a double-pipe blowing method to overcome the existing technology that the radiation source is a nuclear source that is harmful to the human body and the environment, the management procedure is complicated, and the use is comprehensive. high cost etc.

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