Split self-suction type Venturi tube washer

Abstract

The invention provides a split self-suction type Venturi tube washer which comprises an outer sleeve mainly comprising a contraction section and an expanding section, and further comprises a conical independent contraction section, wherein the conical independent contraction section is of a conical structure and is the same as the contraction section of the outer sleeve in shape, the conical independent contraction section is sleeved in the contraction section of the outer sleeve, and is connected with the contraction section of the outer sleeve through flanges at respective inlet ends, an annular liquid flowing channel is formed between the conical independent contraction section and the contraction section, a liquid sucking hole is formed in the contraction section of the outer sleeve, and an outlet baffle plate is arranged at the outlet end of the expanding section of the outer sleeve. Compared with a common Venturi tube washer, the split self-suction type Venturi tube washer is higher in removing efficiency. The split self-suction type Venturi tube washer is suitable for being used as a Venturi tube washer required by a filtration and emission system of pressurized water reactor containment, and is also suitable for an industrial dust removing process.

Description

technical field [0001] The invention relates to a scrubber, in particular to a Venturi tube scrubber. Background technique [0002] Nowadays, nuclear power is more and more popular as a clean and efficient energy source. Although the design of PWR nuclear power plants has implemented the principle of deep safety to ensure the safety of nuclear power plants under design basis accidents, there is still the possibility of accidents beyond design basis in nuclear power plants, which will lead to serious accidents like core meltdown pressure vessels . And if there are no measures to mitigate the accident, the molten core will react with the concrete floor to produce a large amount of non-condensable gas. The integrity of the last barrier, the containment vessel, was compromised, resulting in the leakage of radioactive material. [0003] The containment filtration and discharge system adopts an active pressure relief method to release the gas accumulated in the containment and ...

AI Technical Summary

Problems solved by technology

[0005] Venturi scrubbers are widely used in foreign reactor containment filtration systems. For example, in US Patent No. US07 / 171,656, it is mentioned that Venturi scrubbers are used for filtration, but there is no specific structure for Venturi scrubbers. Describe, especially the structure of the Venturi tube

The specific structure of the Venturi water scrubber used in industry is mentioned in the latest patent, such as the "Venturi tube gas scrubber" described in the patent 201120362897.4, which is mainly used for industrial dust removal. When using multiple nozzles, this makes the structure of the Venturi gas scrubber too complex, resulting in excessive loss of dynamic pressure head during the gas flow process, resulting in insufficient penetration depth of the washing solution

And the device can not adjust the amount of solution injection according to different working conditions

And it uses external power to spray the solution into the Venturi tube, and the Venturi tube operates under non-submerged conditions, but the reactor containment system generally requires that the filter device can operate under passive and submerged conditions , so the industrial Venturi tube cannot be used in the containment filter discharge system

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