A Quantitative Injection Alkali Metal Seed System

Abstract

A quantitatively injected alkali metal seed system includes a programmable high-pressure stainless steel injection pump, a liquid alkali metal delivery pipeline system, an inert gas supply and delivery pipeline system, a vacuum pump and a pneumatic atomized seed injection ring. The liquid alkali metal seeds are quantitatively pushed out from the high-pressure injection pump according to the set program, pass through the liquid alkali metal delivery pipeline system, enter the pneumatic atomization spray gun of the pneumatic atomization seed injection ring, and reach the mixing chamber at the end of the spray gun. The supply and delivery pipeline system is mixed with the inert gas input into the end mixing chamber of the pneumatic atomizing spray gun, and the liquid alkali metal seeds are pneumatically atomized, sprayed from the nozzle, and injected into the injection ring at a 90-degree angle with the high-temperature main airflow in the injection ring Inside. The invention can realize quantitative injection of alkali metal seeds on demand, and creates good conditions for uniform mixing and sufficient ionization of alkali metal seeds and main airflow.

Description

technical field [0001] The invention relates to an alkali metal seed injection system of a magnetic fluid generator. Background technique [0002] Magnetic fluid power generation is a new power generation method that directly converts heat energy into electrical energy. The basic working principle is Faraday's law of electromagnetic induction. Depending on the use of conductive fluid working medium, magnetic fluid power generation can be divided into combustion gas plasma magnetic fluid power generation, inert gas plasma power generation and liquid metal magnetic fluid power generation. When nuclear energy is used as a heat source, inert gas plasma power generation can make full use of the high heat generated by nuclear energy, the total temperature and total pressure of the inert gas will increase, and a pressure difference will be formed at both ends of the MHD power generation channel, thereby forming a flow field. The inert gas plasma quickly flows through the power gen...

AI Technical Summary

Problems solved by technology

The mixture of carrier gas and alkali metal vapor needs to pass through the slender delivery pipe and pass through the water-cooled main gas flow cylinder. During this process, the alkali metal vapor will condense into liquid. At the same time, due to the compressibility of the gas, its flow rate must also be It will be affected by the pressure fluctuation of the main air flow. The amount of alkali metal vapor carried in the mixed gas is related to the pressure of the carrier gas and the vaporization process. The flow rate of the mixed gas injected into the main air flow is related to the injection pressure and the pressure of the main air flow. Influenced by fluctuations, the actual injected flow rate is difficult to control and determine, which seriously affects the ionization of seeds, resulting in low conductivity of the working medium for power generation, affecting the power output of the generator and experimental research

[0006] image 3 The soda metal seed injection system of the Chinese patent ZL20150572329.X inert gas plasma magnetohydrogen generator mentioned, although it mentions the application of a syringe to output a quantitative amount of alkali metal, but its injection system uses a three-way mixer to combine the carrier gas with the syringe The liquid alkali metal sent is mixed to bring out the alkali metal droplet. The carrier gas and the alkali metal droplet pass through the slender pipeline. Due to the need to avoid the influence of the strong magnetic field of the magnetic fluid generator, the length of the pipeline generally needs to exceed 1.5 meters. Passing through the water-cooled main gas flow cylinder, this two-phase flow will also inevitably separate gas and liquid in the delivery pipe, showing a state of one section of liquid and one section of gas

Moreover, due to the compressibility of the gas, when the pressure of the main airflow fluctuates, it also causes the fluctuation of the seed flow rate. In fact, the flow rate of the seed injection is fluctuating, which is not equal to the flow rate of the quantitative injection.

[0007] To sum up, in the above-mentioned prior art, the amount of alkali metal seeds injected into the main gas flow is unclear and unstable, and it is impossible to realize the real accurate and quantitative delivery of alkali metals, let alone the injection of micro-quantitative liquid alkali metal seeds.

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