KR200192090Y1 - Device for perception of water level using float with magnet - Google Patents

Abstract

The present invention relates to a water level measurement apparatus using a magnet, and a ring-shaped float is inserted into a pipe-shaped probe rod, and a sensor pipe having a plurality of resistors and a reed switch is built in the inner circumference of the float. Since the liquid object of the part to be measured penetrates and floats up and down by forming a through hole of the float, the float with magnets intercepts the reed switch, so that the power applied by the interruption passes through a plurality of resistors to the external display device. The present invention relates to a water level sensing device using a float with a magnet that can be used in places where it is not only possible to measure the water level more precisely, but also to the naked eye.

Description

Device for perception of water level using float with magnet}

The present invention relates to a water level measurement device using a magnet, and more specifically, to insert a probe and a probe rod having a plurality of resistors and reed switches in a groundwater or underground tank or a reservoir of toxic components, which are not visible to the naked eye. The float rises and falls according to the water level, and the reed switch is interrupted, and thus the water level detection device using a float with magnets capable of accurate water level measurement by measuring a change in current by a resistor according to the reed switch's interruption.

In general, oil level measurement in underground tanks at gas stations and liquefied natural gas tanks, low oil tank levels in oil refineries, large tanker tanks, oil tanks in general vessels, and poison reservoirs Many methods and devices have been proposed for measuring the level of liquids stored in other tanks.

As an example, a pressure detection method is used in which an input transducer is installed on the upper surface of a liquid material stored in a storage tank to measure a change in pressure according to the increase or decrease of the volume of the contents to detect a change in the water level. And there is a problem that a lot of error occurs due to the pressure change, and also buoys on the upper surface of the liquid storage material floating buoys and connecting the buoys and the counterweight outside the tank with a seal to change the counterweight change into an electrical signal to detect The method is used, and this buoy method is difficult to process the thread connecting the buoy and the counterweight, there is a problem in the lack of installation difficulty and precision.

Also, a buoy is placed on the upper surface of the liquid material stored in the storage tank and the laser method is used to measure the change of the water level by measuring the position change of the buoy with a laser, and the light emitted from the buoy floated on the upper surface of the liquid material is transmitted to the light receiving unit. There is a photovoltaic type for detecting the amount of change in the water level by measuring the degree, but this method has a problem that the detection efficiency is high but the cost of the product is very high and the maintenance cost is high.

In another conventional level detection method, an ultrasonic method which emits ultrasonic waves and measures the time of the carrier wave reaching the upper surface of the liquid storage material to measure the amount of change in the water level is absolute due to temperature change and pressure change due to the characteristics of the ultrasonic wave. There are a lot of possibilities and error ranges and lack of precision, and various methods and devices have been proposed, but they have not been widely used.

The present invention is designed to eliminate the problems described above, inserting a ring-shaped float in the inside of the pipe-shaped probe rod, the sensor pipe having a plurality of resistors and reed switch in the inner periphery of the float, the outer periphery of the probe rod There are a plurality of through holes to penetrate the liquid object of the part to be measured to move up and down the float, and the float with magnets to control the reed switch, so that the power applied by the interruption is passed through a number of resistors It is an object of the present invention to provide a water level sensing device using a float with a magnet that can be used in places where it is not possible to check the water level more precisely as well as to be able to measure the water level is displayed on the device.

Technical means for achieving the above object, in the liquid level measurement apparatus, a ring-like float having a plurality of magnets located at a predetermined angle therein, a plurality of resistors and reed switches are vertically arranged and connected to each other It consists of a sensor pipe, a probe rod having a ring-shaped groove formed on the outer circumferential surface thereof, and a plurality of through holes formed therein to form a filtration filter on the outer circumferential surface thereof, and a display device for converting an electrical signal output from the electric sensor pipe into a depth.

1 is a partial cutaway perspective view of the present invention

2 is a partial cross-sectional view of the present invention

3 is a cross-sectional view taken along line A-A 'of the present invention FIG.

Figure 4 is another embodiment of the present invention

5 is a state of use of the present invention

Explanation of symbols on the main parts of the drawings

10: probe rod 11,11 ': groove

12,12 ': Through hole 13,13': Filter

14,14 ': mesh pipe 15: filter material

20: float 21, 21 ': magnet body

30 sensor pipe 31,31 ': resistor

32,32 ': Reed switch 33: Through hole

34: fixed plate

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a perspective view showing a portion of the present invention the water level measuring device, Figure 2 is a side cross-sectional view thereof.

First, as the water level measuring method according to the present invention,

A plurality of resistors are connected in series to one conductor, and one end of the plurality of reed switches is connected in parallel to the other conductor, and the other end of the reed switch is connected to the middle of the resistor, respectively.

A float having a plurality of magnets therein is moved up and down according to the water level on the outer circumferential surface of each resistor and the reed switch, so that the reed switch of the corresponding position is connected by the magnet body, thereby leading to the initial current applied from the display device. The reduced current of the resistor according to the connection of the switch is converted into distance so that the water level is displayed.

In addition, as an apparatus for implementing the method as described above,

A pipe-shaped probe rod 10, a ring-shaped float 20 which is allowed to move up and down inside the probe rod 10, and a pipe-shaped sensor pipe 30 vertically placed inside the float 20,

The probe rod 10 forms a plurality of ring-shaped grooves 11 and 11 'on the outer circumferential surface, and each of the grooves 11 and 11' forms a plurality of through holes 12 and 12 '. 11) and 11 'are formed by inserting filters 13 and 13',

The float 20 constitutes a magnet body 21 (21 ') at an angle therein,

The sensor pipe 30 vertically connects a plurality of resistors 31, 31 ′ and reed switches 32, 32 ′ in the inside thereof, and is mounted by a fixed plate 34 having a through hole 33 formed therein. will be.

In addition, the probe rod 10 described above may be formed by separating the network pipes 14 and 14 'in double, and inserting the filter material 15 into the space therebetween.

In the figure, reference numeral 40 denotes a tank, and 41 denotes a display.

When the operation of the present invention by the configuration of the device as described above in more detail by the accompanying drawings as follows.

When the probe rod 10 of the present invention is inserted into a tank to be measured as shown in FIG. 2, the filter 13, 13 ′ and through holes 12, 12 ′ formed on the outer periphery of the probe rod 10 are inserted into the tank. The liquid object is introduced into the interior.

Accordingly, the liquid object in the tank and the liquid object in the probe rod 10 have the same water level, and the float 20 has a constant height according to the water level of the liquid object in the probe rod 10.

That is, when the level of the liquid object in the tank is at the lowest level, the float 20 is positioned at the lowermost end so as to connect the lowest reed switch 32 'in the sensor pipe 30, so that the current applied thereto is the minimum amount of electricity by the plurality of resistors. The signal is reduced to an original signal and sent to the display 41.

Therefore, the display 41 recognizes the applied current and converts the level into a display that can be recognized by the user.

When the float 20 of the present invention is raised to a certain height by a liquid object having a certain water level, as shown in the drawing, the reed switch 32 at the corresponding position is connected, and the current applied from the portion is relatively connected. Since it passes through the resistor in a low state, it is to transmit a larger amount of current to the display 41 when positioned below.

Accordingly, the display 41 recognizes a larger current, converts the level into a level, and outputs the same to the user.

In more detail, if the current flows in the absence of the resistors 31 and 31 ', 50V flows, and 1V is reduced every time one resistor 31 and 31' is connected, the float 20 If it is located at the bottom of the probe rod 10, 50 resistors 31 and 31 'are passed through, and the recognition value is recognized as 0V, and the level conversion is also output as 0cm, and the predetermined height, that is, the 25th resistor If the float 20 is located at the point where (31) (31 ') is located, the reed switch (32) (32') which is disengaged to the part is connected and passes through 25 resistor (31) (31 ') upwards. Therefore, the voltage value recognized by the display 41 is 25V, and the level conversion is also output at 25 cm.

The resistors 31 and 31 'and the reed switches 32 and 32' can be increased in number for more accurate measurement, and the number of resistors 31 and 31 'can be increased for a relatively simple level measurement. Therefore, it is more economical because the precision of the water level measuring device can be added or subtracted.

The intermittent action of the reed switches 32 and 32 'is interrupted by a plurality of magnets 21 and 21' having radially constant angles in the float 20, as shown in FIG. The repulsive force causes the reed switches 32 and 32 'to be interrupted, and the magnetic field radiated from the magnet bodies 21 and 21' is to interrupt the reed switches 32 and 32 '. Ideal.

In addition, as shown in FIG. 4, the probe rod 10 is formed of a double mesh pipe 14 and 14 ′ inside and outside, and the filter material 15 is inserted into the space between the inside and the outside of the outside to measure the external water level. While allowing the inflow, while allowing the float to not pass, it is possible to easily enter the probe rod 10, thereby enabling a more rapid level measurement.

In the water level detection device using the float with the magnet of the present invention, as shown in FIG. 5, the probe rod 10 is inserted into the water level measurement object that cannot be visually checked, such as the tank 40 buried underground, and the float 20 Since the up and down increases and changes the voltage, the variable voltage is converted into a level so as to be recognized by the user through the display 41, so that a more accurate level measurement is possible without any burden of a melon failure or a separate maintenance cost.

The water level sensing device using a float with a magnet of the present invention by the above-described action is able to measure the water level more precisely even where it is impossible to check with the naked eye. It does not require any maintenance fee.

Claims (2)

A pipe-shaped probe rod 10, a ring-shaped float 20 which is allowed to move up and down inside the probe rod 10, and a pipe-shaped sensor pipe 30 vertically placed inside the float 20, The probe rod 10 forms a plurality of ring-shaped grooves 11 and 11 'on the outer circumferential surface, and each of the grooves 11 and 11' forms a plurality of through holes 12 and 12 '. 11) 11 'is formed by inserting the filter 13, 13', The float 20 constitutes a magnet body 21 (21 ') at an angle therein, The sensor pipe 30 vertically connects the plurality of resistors 31, 31 ′ and the reed switches 32, 32 ′ therein, and is placed in the bottom by a fixed plate 34 having a through hole 33 formed therein. Water level detection device using a float, characterized in that the magnet. The magnet rod of claim 1, wherein the probe rod 10 is formed by separating the network pipes 14 and 14 'into double spaces, and inserting the filter material 15 into the space therebetween. Water level detection device using a float.