Investigation on the effect of geometrical parameters on the performance of a venturi type bubble generator

Separation characteristics of the gas and liquid phases in a vane-type swirling flow field

Experimental study on flow patterns and transition criteria for vertical swirling gas-liquid flow

Flow field of continuous phase in a vane-type pipe oil-water separator

Modeling and simulation of the gas-liquid separation process in an axial flow cyclone based on the Eulerian-Lagrangian approach and surface film model

Experimental study and numerical optimization on a vane-type separator for bubble separation in TMSR

Condensation heat-transfer experiment device capable of realizing coupling of natural circulation and forced circulation

The utility model provides a non-dynamic safety case cooling system comprising a pool, an internal vaporizer pipe truss, a vapor-water separator and an external air cooling device. The pool is arranged in a ring-shaped cavity combined by an inner layer concrete safety case and an outer layer concrete safety case. The external air cooling device is arranged between the domes of the inner layer concrete safety case and the outer layer concrete safety case. An internal vaporizer and the vapor-water separator are arranged in the inner layer concrete safety case. Two ends of the internal vaporizer are respectively connected with the vapor-water separator through two pipes. The vapor-water separator is connected with the external air cooling device through a first pipe extending out of the inner layer concrete safety case. The internal vaporizer pipe truss is communicated with the pool through a second pipe extending out of the inner layer concrete safety case. When accidents such as loss of coolant accident (LOCA) and main steam line burst (MSLB) happen, the non-dynamic safety case cooling system can safely and reliably conduct out heat in the safety case for a long term, ensures that the temperature and pressure in the safety case do not surpass designed limit values, and ensures integrity of the safety case.

Non-dynamic safety case cooling system

The invention aims to provide a passive residual heat exhausting system for a molten salt reactor. The passive residual heat exhausting system comprises a salt discharging pot, heat exchanging elements, a steam pocket and a ventilator, wherein the upper part of each heat exchanging element is located in the steam pocket, the lower part of each heat exchanging element is located in the salt discharging pot, and other parts of each heat exchanging element are located between the steam pocket and the salt discharging pot; each heat exchanging element comprises a heat transferring pipe; each heat transferring pipe is internally provided with a middle sleeve; each middle sleeve comprises an inner wall and an outer wall; a channel for steam to flow through is formed between each inner wall and the corresponding outer wall; a water inlet pipeline is formed in the inner wall of each middle sleeve, a water inlet is formed in the top of each water inlet pipeline, and the bottom end of each water inlet pipeline is disconnected and is communicated with the corresponding channel; the ventilator is internally provided with an air cooler; an air cooler inlet is formed in the end part of the air cooler and a fin pipe is arranged in the middle of the air cooler; the steam pocket is communicated with the air cooler inlet. According to the passive residual heat exhausting system for the molten salt reactor provided by the invention, the passive working capability of the system is improved, the problems of high fault rate and the like caused by the design of an active system are solved, and therefore, the safety of the residual heat exhausting system for the molten salt reactor is improved.

Passive residual heat exhausting system for molten salt reactor

The invention aims at providing a two-phase flow interface parameter distribution characteristic experiment device under swinging condition, which comprises a water storage box, a mixing chamber, an experiment section, an air-water separation device, an air compressor, an air storage tank, a swing table, photoelectric converter and a light source, wherein the mixing chamber and the steam-water separation device are respectively installed at both ends of the experiment section, the water storage box is connected with the air-water separation device and the mixing chamber respectively, the air storage tank and the air compressor are connected in parallel and connected with the mixing chamber, and the mixing chamber is also connected with the swing table; and an optical fiber probe and a pressure sensor are installed on the experiment section, the photoelectric converter faces to the optical fiber probe, and the light source faces to the photoelectric converter. The invention further develops and perfects an experiment device for researching the air-liquid two-phase local parameter distribution and transportation mechanism in a large channel under the steady-state condition, foaming is uniform in the experiment, a stable bubble flow can be obtained, and the outlet pressure of the air-water separation device maintains constant by means of gravity separation.

Wang Jianjun

Papers

Experimental study and numerical optimization on a vane-type separator for bubble separation in TMSR

Condensation heat-transfer experiment device capable of realizing coupling of natural circulation and forced circulation

Non-dynamic safety case cooling system

Passive residual heat exhausting system for molten salt reactor

Two-phase flow interface parameter distribution characteristic experiment device under swinging condition