Liquid nitrogen overflow prevention device of low-temperature adsorber
An adsorber and low-temperature technology, which is applied in the field of reactor cooling equipment, can solve problems such as damage to equipment and waste, and achieve the effects of good safety, saving liquid nitrogen, and avoiding equipment damage
Pending Publication Date: 2022-03-04
HUANENG SHANDONG SHIDAOBAY NUCLEAR POWER CO LTD
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Problems solved by technology
[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defects of damage to equipment and serious waste after liquid nitrogen overflows in the prior art, thereby providing a device for preventing liquid nitrogen overflow of cryogenic adsorbers
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[0027] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...
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The invention relates to the technical field of reactor cooling equipment, in particular to a liquid nitrogen overflow prevention device of a low-temperature adsorber. Comprising a nitrogen discharge pipeline, a first valve, a first liquid level monitoring structure and a second valve, wherein the first valve, the first liquid level monitoring structure and the second valve are sequentially arranged from an outlet of the low-temperature adsorber; the liquid nitrogen recovery pipeline comprises a storage tank and a third valve which are arranged from an inlet of the low-temperature adsorber, and the third valve is arranged between the first valve and the first liquid level monitoring structure; wherein during normal work, the first valve and the second valve are in an open state, and the third valve is in a closed state; when the first liquid level monitoring structure monitors that liquid nitrogen overflows from the low-temperature adsorber, the first valve and the third valve are in an open state, the second valve is in a closed state, and the second valve is opened and the third valve is closed until no liquid nitrogen overflows. The problems that after liquid nitrogen overflows, equipment is damaged, and waste is serious are solved.
Description
technical field [0001] The invention relates to the technical field of reactor cooling equipment, in particular to a liquid nitrogen overflow preventing device for a cryogenic adsorber. Background technique [0002] In the helium purification system of high temperature gas-cooled reactor nuclear power plant, helium passes through dust filter, copper oxide bed, pipeline filter, medium temperature helium / hydrogen heat exchanger, water / helium cooler, gas / water separator, molecular sieve bed, low temperature helium / Helium heat exchanger to remove solid particles, H 2 , CO, CO 2 、H 2 O and cooled to 165 ° C, and then into the cryogenic adsorber. The cryogenic adsorber consists of a liquid nitrogen tank, a cooling coil at the bottom of the liquid nitrogen tank and an activated carbon bed. Helium is cooled to -190°C after entering the cooling coil and activated carbon bed soaked in liquid nitrogen. The cryogenic adsorber is equipped with a liquid level gauge, and the staff in...
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IPC IPC(8): B01D53/04
CPCB01D53/0438B01D53/0454
Inventor 严春王美莹吕传凤
Owner HUANENG SHANDONG SHIDAOBAY NUCLEAR POWER CO LTD