RU-2861667-C1 - DISCRETE DYNAMIC LEVEL GAUGE FOR MEASURING HIGH-TEMPERATURE HEAVY LIQUID METAL COOLANTS

RU2861667C1RU 2861667 C1RU2861667 C1RU 2861667C1RU-2861667-C1

Abstract

FIELD: instrumentation. SUBSTANCE: invention can be used for measuring the level of a heavy liquid metal coolant and melts of other metals in closed volumes, for example in reactor plants or non-ferrous metallurgy vessels. A discrete dynamic level gauge comprises a float with a permanent magnet, placed on a vertically arranged non-magnetic tube, a sealed magnetically operated contact (reed switch) controlling a microcontroller, a first input of which is connected to the output of a discrete rotation angle sensor, a second input is connected to the output of a reference start photodetector, a reversible motor connected to the output of the microcontroller. A gear wheel coupled with the reversible motor through the rotation angle sensor is in meshing engagement with a gear rack with a cooling electrically conductive non-magnetic tube fixed thereto, one end of which is connected to one contact of the reed switch, and the other end is connected to a flexible hose connected to a blower. The level gauge is provided with a float with a permanent magnet, made in the form of an annular high-temperature magnet. The second contact of the reed switch is connected through an insulated conductor and a shutter to the third input of the controlling microcontroller, forming a simple series electrical circuit: the controlling microcontroller as a power source, the reversible motor shaft, the rotation angle sensor shaft, the gear engagement, the cooling tube, the reed switch, the insulated conductor, the shutter, the controlling microcontroller receiving the signal. EFFECT: increased reliability of its operation at high temperatures of heavy liquid metal coolant and melts of other metals. 1 cl, 1 dwg

Inventors

Bokova Tatiana Aleksandrovna
Volkov Nikita Sergeevich
Marov Aleksandr Romanovich
Pogorelov Mikhail Dmitrievich
Sumin Roman Viktorovich
Zyrianova Tatiana Konstantinovna

Dates

Publication Date: 20260507
Application Date: 20250812

Claims (1)

A discrete dynamic level meter for measuring high-temperature heavy liquid metal coolants, comprising a float with a permanent magnet, placed on a vertically located non-magnetic pipe, a sealed magnetically controlled contact - a reed switch, a control microcontroller, the first input of which is connected to the output of a discrete angle sensor, the second input is connected to the output of a start-of-counting photosensor, a reversible motor connected to the output of the microcontroller, characterized in that it is equipped with a gear wheel coupled to the reversible motor through the angle sensor, which is in toothed engagement with a toothed rack with a cooling electrically conductive non-magnetic pipe fixed to it, connected at one end to one contact of the reed switch, and at the other to a flexible hose connected to a gas blower, wherein the permanent magnet of the float is made in the form of a ring-shaped high-temperature magnet, wherein the second contact of the reed switch is connected through an insulated conductor and a shutter to the third input of the control microcontroller, forming a sequential Electrical circuit: control microcontroller as a power source, reversible motor shaft, angle sensor shaft, gear engagement, cooling pipe, reed switch, insulated conductor, shutter, control microcontroller receiving signal.

Description

The invention relates to the field of instrument making and can be used to measure the level of heavy liquid metal coolant and melts of other metals in closed volumes, for example, in reactor installations or non-ferrous metallurgy tanks. A discrete level gauge is known according to Russian Patent No. 2193165 (published November 20, 2002, IPC G01F 23/74, Bulletin No. 32). The discrete level gauge comprises a float with a permanent magnet, a vertically positioned non-magnetic tube, a reed switch, a reversible motor, a discrete angle sensor, a drum with a cable, a reference photosensor, a translator photosensor, and a support plate. The float with a permanent magnet is mounted on a vertically positioned non-magnetic tube. The discrete angle sensor and the drum with a cable are coupled to the shaft of the reversible motor. A reed switch with a non-magnetic weight is mounted at the end of the cable, which is made of a flexible conductor, inside the non-magnetic tube. The support plate is provided with an opening for the drum. A disadvantage of this discrete level meter is its low reliability due to insufficient resistance to high temperatures. The float has a magnet with a low Curie point, which causes it to lose its original magnetic properties and disrupt the discrete level meter's operation at temperatures of 350-550°C. The reed switch also lacks a cooling system, making it susceptible to failure when exposed to high temperatures. The problem being solved is to increase the reliability and extend the service life of a discrete dynamic level meter for measuring the level of high-temperature heavy liquid metal coolants and other metal melts. The technical result is a simplification of the design of the level gauge by eliminating the photo sensor-translator, the drum and the cable with the reed switches located on it, the use of a toothed rack with a toothed wheel, ensuring the operability of the reed switches at high temperatures of 350-550°C by introducing gas cooling and using high-temperature magnets with a high Curie point. This technical result is achieved in that the discrete dynamic level meter, comprising a float with a permanent magnet, placed on a vertically located non-magnetic pipe, a reed switch, a control microcontroller, the first input of which is connected to the output of a discrete angle sensor, the second input is connected to the output of a start-of-counting photosensor, a reversible motor connected to the output of the microcontroller, is equipped with a gear wheel coupled with the reversible motor through the angle sensor, which is in toothed engagement with a toothed rack, with a cooling electrically conductive non-magnetic pipe fixed to it, connected at one end to one contact of the reed switch, and at the other to a flexible hose connected to a gas blower, is also equipped with a permanent magnet, made in the form of a ring-shaped high-temperature magnet. The second contact of the reed switch is connected to the third input of the control microcontroller via an insulated conductor and a shutter, forming a simple sequential electrical circuit: the control microcontroller as a power source, the shaft of the reversible motor, the shaft of the angle sensor, gear engagement, cooling pipe, reed switch, insulated conductor, shutter, control microcontroller receiving the signal. Figure 1 shows a diagram of the proposed discrete dynamic level meter for measuring heavy liquid metal coolants. A discrete dynamic level meter for measuring high-temperature heavy liquid metal coolants comprises a non-magnetic tube 1, the lower end of which is hermetically sealed, a float 2 with a permanent ring high-temperature magnet 3, which are mounted on the tube 1, a reed switch 4, one contact of which is connected to the lower end of a cooling electrically conductive non-magnetic tube 5, and the second contact through an insulated conductor with a shutter 6, mounted on the upper end of the tube 1 with the possibility of its vertical movement and connected by a conductor to the third output of the microcontroller 7, a reversible motor 8, a rotation angle sensor 9, a toothed wheel 10, located in toothed engagement with a toothed rack 11, with a cooling electrically conductive non-magnetic tube 5 fixed thereon, connected to a flexible hose 12, connected to a gas blower 13, a photosensor 14 of the beginning of the counting. The discrete dynamic level meter for measuring high-temperature heavy liquid metal coolants operates as follows. When the tank is empty, float 2 with permanent ring high-temperature magnet 3 is suspended at the lower end of non-magnetic tube 1 by its own weight. Cooling, electrically conductive non-magnetic tube 5, via rack 11, is engaged with gear wheel 10 in the upper position and holds shutter 6 raised so as to block the light beam from photosensor 14, preventing the electrical signal from its output from reaching the input of microcontroller 7. In this case, the digital indicator of microc