RU130696U1 - DEVICE FOR MEASURING A LIQUID LEVEL IN A TANK - Google Patents

Abstract

1. A device for measuring the liquid level in a tank, comprising an angle sensor mounted on a lever located in the liquid tank, the first end of the lever mounted on the axis of rotation, a float fixed at the second end, characterized in that the axis of rotation is mounted on the lower end vertically oriented tube, rigidly attached with its upper end to the lower side of the removable tank lid. 2. The device according to claim 1, characterized in that a liquid temperature sensor is installed, mounted on the second end of the lever. The device according to claim 2, characterized in that a radio modem is introduced, connected through a microcontroller to a liquid temperature sensor and an angle sensor, the microcontroller and the radio modem being placed in the immediate vicinity of the reservoir.

Description

The device relates to measuring equipment, namely, devices for measuring the liquid level in a tank, for example, in a fuel or oil tank of a vehicle, and can be used in mining, oil, construction and other industries.

From the patent DE 102009003070 (published on November 18, 2010), a device is known for measuring the liquid level in a tank, comprising an angle sensor mounted on a lever. The first end of the lever and the angle sensor are mounted on the axis of rotation, the float is fixed at the second end.

The disadvantage of this device is that the axis of rotation is located at the upper end of the tank, which limits the angle of rotation of the lever to 90 degrees and does not allow to measure large differences in liquid level, i.e. narrows the measurement area; to extend the measurement range, a large lever length is required, requiring an increase in the volume of the tank. Another disadvantage of the above device is its non-repairable design, because the support, on which the lever with the sensor is fixed, is firmly mounted inside a closed reservoir with liquid on the side wall of the reservoir, which significantly complicates their dismantling.

The technical problem that the utility model is aimed at is expanding the functions of the device for measuring the liquid level in the tank and ensuring its maintainability.

The problem is solved in that the device for measuring the liquid level in the tank, like the prototype, contains a tilt angle sensor mounted on a lever located in the liquid tank, the first end of the lever mounted on the axis of rotation, the float fixed at the second end. Unlike the prototype, the axis of rotation is mounted on the lower end of a vertically oriented tube, rigidly attached with its upper end to the lower side of the removable lid of the tank.

The solution to the problem is facilitated by the introduction of a liquid temperature sensor mounted on the second end of the lever.

The problem is also facilitated by the fact that a radio modem is introduced, connected through a microcontroller to a liquid temperature sensor and an angle sensor, and the microcontroller and radio modem are located in the immediate vicinity of the tank.

The essence of the utility model is illustrated by the drawings of the device for measuring the liquid level in the tank.

Figure 1 shows a device with data transmission over a wired communication line.

Figure 2 shows a device with data transmission over a wireless communication line.

The device 1 for measuring the liquid level in the tank 2, shown in figure 1 and figure 2, contains a lever 3 with a mounted angle sensor 4. The micromechanical angle sensor 4 includes at least two, and preferably three acceleration sensors, measuring whose axes are orthogonal relative to each other.

The first end 5 of the lever 3 is mounted on the axis of rotation 6. At the second end 7 of the lever 3 is fixed a float 8, which can move along the arc of a circle A when changing the level of liquid 9 in the tank 2.

The angle sensor 4 and the temperature sensor 10 of the liquid are placed on the second end 7 of the lever 3 in contact with the liquid, in a sealed housing 11, firmly attached to the float 8.

The axis of rotation 6 is installed on the lower end of a vertically oriented tube 12, rigidly attached with its upper end to the removable cover 13 of the tank 2 with the liquid. The tube 12 and the lever 3 are preferably made of equal length. The upper end of the tube 12 is closed by a plug 14, through the axial hole of which the wire of the connecting line 15 is passed. The removable cover 13 tightly closes the tank 2.

The microcontroller 16, associated with the angle sensor 4 and the temperature sensor 10 of the liquid, has the ability to transmit measurement signals from these sensors.

In figure 1, the microcontroller 16 is placed in a sealed enclosure 11 and connected to an external device for receiving information (not shown) by a wireline 15 passing through a detachable electrical connector 17.

In figure 2, the microcontroller 16 is connected to the radio modem 18 and the stand-alone power source 19, and the microcontroller 16, the radio modem 18 and the stand-alone power source 19 are located outside the tank 2, in the immediate vicinity of it. In this case, the microcontroller 16 is connected by a wired communication line 15 with the angle sensor 4 and the temperature sensor 10, the external information receiving device is equipped with a radio module for wireless communication with the radio modem 18.

The operation of the device for measuring the liquid level in the tank is as follows.

When changing the liquid level 9, the float 8 moves along an arc of a circle A, the radius of which is the lever 3. At the minimum liquid level 9, the lever 3 is placed vertically, the float 8 is lower with respect to the axis of rotation 6. At the maximum liquid level 9, the float 8 is above the axis rotation 6. The angle sensor 4 measures the angle of the lever 3, then the microcontroller 16 software calculates the liquid level 9, corresponding to the given position of the angle sensor 4. The temperature sensor 10 measures the temperature of the liquid in reservoir 2. The microcontroller 16 sends the measurement signals of the sensors 4 and 10 to an external device for receiving information via a wired or wireless communication line, depending on the embodiment of the device.

The introduction of a vertically oriented tube 12, at the lower end of which a lever 3 is mounted on the axis of rotation 6, allows you to increase the range of measured liquid levels 9.

Providing the device 1 with a temperature sensor 10 mounted on the second end 7 of the arm 3 in contact with the liquid, makes it possible to measure the temperature of the liquid in the tank 2.

The supply of the device 1 with a radio modem 18, connected via a microcontroller 16 with a wired communication line with an angle sensor 4 and a liquid temperature sensor 10, allows the transmission of measurement data using wireless transceiver communication.

In General, this extends the functions of the device 1 measuring the liquid level in the tank.

The attachment of the tube 12 with the lever 3 to the removable cover 13 allows you to easily remove them from the tank 2, which ensures the maintainability of the device 1.

Claims (3)

1. A device for measuring the liquid level in a tank, comprising an angle sensor mounted on a lever located in the liquid tank, the first end of the lever mounted on the axis of rotation, a float fixed at the second end, characterized in that the axis of rotation is mounted on the lower end vertically oriented tube, rigidly attached with its upper end to the bottom side of the removable lid of the tank. 2. The device according to claim 1, characterized in that the introduced liquid temperature sensor mounted on the second end of the lever. 3. The device according to claim 2, characterized in that a radio modem is introduced, connected through a microcontroller to a liquid temperature sensor and a tilt angle sensor, the microcontroller and the radio modem being placed in the immediate vicinity of the reservoir.

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