Liquid metal level probe and using method thereof

Abstract

The invention discloses a liquid metal level probe and a using method thereof. The liquid metal level probe comprises a high-level probe, a low-level probe, a stainless steel sleeve and a corundum pipe; an upper compression nut is sleeved on the low-level probe; a polytetrafluoroethylene block A is arranged at the lower side of the upper compression nut; the upper compression nut is matched with an upper lug boss; a polytetrafluoroethylene block B is arranged in the upper lug boss; the stainless steel sleeve is welded at the lower side of the upper lug boss; a lower compression nut is sleevedin the middle part of the stainless steel sleeve; a polytetrafluoroethylene block C is arranged at the lower side of the lower compression nut; the lower compression nut is matched with a lower log boss; a polytetrafluoroethylene block D is arranged in the lower lug boss; the lower lug boss is welded on a cylinder body; the corundum pipe is arranged inside the stainless steel sleeve; a polytetrafluoroethylene block E is arranged at the lower side of the corundum pipe; and the high-level probe is connected to the outer side of the stainless steel sleeve. The device provided by the invention can be used for detecting the liquid level in a liquid metal tank body effectively, can be used at high temperature, has the advantages of favorable sealing and insulation properties, working safety andreliability, easiness in result observation, reasonable design and compact structure and is suitable for being assembled on a liquid metal container.

Description

technical field [0001] The invention belongs to the technical field of liquid metal detection equipment, and in particular relates to a device for detecting the liquid level of a tank in a liquid metal sodium test circuit and a method for using the same. Background technique [0002] The liquid level in each tank in the liquid metal sodium circuit reflects the stock of liquid metal in the tank. When the circuit is running, if the liquid level in the tank is too low, the gas will enter the electromagnetic pump, causing the electromagnetic pump driven by the electromagnetic to fail to work normally and increase the heat generation of the electromagnetic pump, decrease the cooling capacity, and damage the coil of the electromagnetic pump; If it is too high, it will lead to the failure of the tank top sealing device or other detection and control equipment in direct contact with the high temperature liquid metal. Therefore, accurate and reliable measurement of the liquid level ...

AI Technical Summary

Problems solved by technology

However, due to the high operating temperature of the liquid metal circuit (over 200°C) and the inability to contact with air, etc., it requires high sealing performance, so this liquid level sensor is not suitable for use in liquid metal systems

[0005] As another example, Chinese patent 99202908.2 provides a buoyancy type liquid level measuring instrument, which is mainly composed of a float, a rope for fastening the float, a measuring wheel, a large coil spring wheel coaxially installed with the measuring wheel, a signal conversion output device, and a winding at one end. On the large coil spring wheel, the other end is coiled on the coil spring small wheel and other components, which solves the problem of complicated installation and inaccurate indication of the float steel belt type liquid level measuring instrument, and can be widely used for liquid level monitoring Measurement

However, it has many mechanical structures, which cannot meet the requirements for high temperature and high sealing, and cannot solve the problem of high corrosion of liquid sodium.

Therefore not suitable for liquid metal systems

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