HEAD FOR A STORAGE CONTAINER FOR LIQUIDS

Abstract

The invention relates to a head (5) for a storage container for fluids, comprising a head body, characterised in that a through sleeve (10) is located inside the head body, wherein a protection tube (2) is coupled to the through sleeve (10) in the lower part of the head body, and a liquid level capacitive sensor (3) is mounted in the lower part of the body, a gland coupled with a flange to an electronic junction box (4) powered by a battery or an accumulator, the gland is located in the upper part of the body, the junction box comprising a circuit board equipped with a microcontroller and a diode gauge (6), and conduits ended with a plug extend from the electronic junction box (4).

Claims

1. Head for a storage container (5) for fluids, comprising a head body, characterised in that a through sleeve (10) is located inside the head body, wherein a protection tube (2) is coupled to the through sleeve (10) in the bottom part of the head body, and a liquid level sensor (3) is mounted in the lower part of the body, a gland (14) coupled with a flange (11) to an electronic junction box (4) powered by a battery or an accumulator is located in the upper part of the body, comprising a circuit board equipped with a microcontroller (13) and a diode gauge (6), and conduits terminated with a plug (12) extend from the electronic junction box (4), and the head body comprises a flat coupling flange (15) in its lower part.

2. The container head according to claim 1, characterised in that the protection tube (2) is perforated.

3. The container head according to claim 1, characterised in that, a heater (1) ending with a heating spiral is mounted in the lower part of the body.

4. The container head according to claim 1, characterised in that the liquid level sensor (3) is a capacitive sensor.

5. The container head according to claim 4, characterised in that, the liquid level capacitive sensor (3) comprises a cylindrical capacitor with varying electric permittivity, comprising a tube (7) with a core (8) of length equal to the length of the tube placed inside it, and spacers (9) made of non-conductive material are placed on the core, wherein electrical conduits are connected to the upper endings of the tube and the core.

Description

[0011] The embodiments of the invention have been presented on the drawing, where

[0012] FIG. 1 illustrates the head assembly for a storage container for fluids,

[0013] FIG. 2 illustrates a cross-section of the head placed in the container,

[0014] FIG. 3 illustrates an elevation view of the outside surface of the container with a mounted head and visible electronic junction box,

[0015] FIG. 4 illustrates an elevation view of the container presenting the placement of the head on the outside surface of the container relative to the placement of the head elements inside the container, and

[0016] FIG. 5 illustrates the fluid level sensor and its cross-section.

EXAMPLE

[0017] The head of a storage container 5 for fluids comprises a head body, comprising a through sleeve 10, wherein a perforated protection tube 2 is coupled to the through sleeve 10 in the lower part of the head body. A capacitive liquid level sensor 3 is mounted in the lower part of the body, and a gland coupled with a flange to an electronic junction box 4 powered by a battery or an accumulator is located in the upper part of the body, comprising a circuit board equipped with a microcontroller and a diode gauge 6. Conduits terminated with a plug extend from the electronic junction box 4. Additionally, a heater 1 ending with a heating spiral is mounted in the lower part of the body. The capacitive sensor 3 comprises a cylindrical capacitor with varying electric permittivity, comprising a tube 7 with a core 8 of length equal to the length of the tube placed inside it, and spacers 9 made of non-conductive material are placed on the core, wherein electrical conduits are connected to the upper endings of the tube and the core. The invention is applied in a device used for local cryotherapy. A hose is connected to the outside outlet of the head. After turning on the heater, the temperature inside the container rises, as a consequence of that, the nitrogen starts to evaporate more intensely through the coupled hose. The operator observes the nitrogen level decrease in real time. When the level reaches minimum, it is safe to fill the container. In order to prepare the container for secure filling, the sensor is prompted with a push-button. The power supply is then connected to the batteries/accumulators. The filling is commenced, which, due to the perforated tube installed, limits the risk of the liquid fraction of the fluid leaving the container. During refilling of the container, the nitrogen level is observed on a specialised bargraph. This enables controlling the filling level of the container. In the liquid level measuring assembly, a box with battery power supply is present, which allows measuring the liquid level inside the container without the external power supply.