KR20170002628U - Level gauge for liquefied gas tank - Google Patents

Abstract

A level gauge including a magnet that rotates by the amount corresponding to the remaining amount of gas, and a level gauge for a liquefied gas storage tank for measuring the remaining amount in the tank through an indicator including a magnet coupled to the level gauge and rotating in accordance with rotation of the magnet Wherein a transmitter body including a transmitter for receiving an electric signal corresponding to a remaining amount of gas measured in level gauges and radiating the radio signal is integrally coupled to one side of the level gauge and a signal transmitted to the transmitter is converted into an electric signal A level gauge for the liquefied gas storage tank is provided and a contact signal through an indicator for giving a contact signal to a level gauge capable of checking the remaining amount of the tank is supplied to an FM radio transmitter And transmits it to a wireless receiver installed in the destination and transmits the melody By informing the peueum, it is possible to give the user receives the gas from the gas supplier provide the gas supply in time increases the ease of application provider to a plurality of small LPG storage tank.

Description

{LEVEL GAUGE FOR LIQUEFIED GAS TANK}

The present invention relates to a level gauge for a liquefied gas storage tank, and more particularly, to a level gauge for a liquefied gas storage tank that includes a radio transmitter device for measuring a gas charge in a tank measured in a level gauge and transmitting it to a receiver Level gauge.

 Generally, LPG consumers will install small storage tanks and get gas from the gas supplier. In addition, since the gas supplier can not confirm the charged amount of the gas tank individually in real time, it relies only on the user and supplies the gas only when the user requests it. At this time, the user has to check the gauge of the tank in order to inform the user of the supply timing, thus complicating the operation. Also, since the charging cycle is not constant depending on the usage amount, the user can select appropriate gas charging timing only after several times of effort.

As an example of the prior art, Korean Patent Laid-Open Publication No. 10-2005-015384 has developed a level gauge using permanent magnets.

The level gauge includes a float that floats up and down according to the amount of liquid stored in the tank and a motion transmission mechanism that converts the float up and down operations into rotational motion of the first permanent magnet, A second permanent magnet provided in the gauge body for interlocking with the magnetic force of the first permanent magnet, a pointer needle interlocked with the rotational motion of the second permanent magnet, and a level display plate for indicating the amount of stored liquid have.

Therefore, when the float is lifted or lowered according to the amount of the liquid in the tank, the first permanent magnet is rotated by the motion transmission mechanism, and the first permanent magnet rotates in accordance with the change of the magnetic field caused by the rotation of the first permanent magnet, The second permanent magnet rotates in conjunction therewith, and the pointer needle associated with the second permanent magnet indicates the scale of the level display plate, so that the amount of liquid in the storage tank can be measured and confirmed outside the storage tank.

Since the level gauge using the first and second permanent magnets provided inside and outside the storage tank can measure the amount of liquid in the storage tank without having to penetrate the side wall of the storage tank, It is usefully used in storage tanks where the stored liquid may leak.

However, the level gauge of the conventional configuration as described above has a problem that the user has to check the scale of the level display panel directly as mentioned above. Therefore, development of a technique for solving such inconvenience is required.

Published Patent Application No. 10-2005-015384

The present invention provides a level gauge for a liquefied gas storage tank that allows a user to know the liquefied petroleum gas charging time of a tank without directly checking the level of the liquefied petroleum gas through a level gauge.

Another object of the present invention is to provide a level gauge for a liquefied gas storage tank of a type that is simple and inexpensive, but applicable to all currently produced small storage tanks.

The object of the present invention is to provide a level gauge including a magnet that rotates by the amount corresponding to the remaining amount of gas, and a liquefied gas which measures the remaining amount in the tank through an indicator, which is coupled to the level gauge and includes a magnet, A transmitter body including a transmitter for receiving an electric signal for a remaining amount of gas measured in level gauges and wirelessly transmitting the electric signal is integrally coupled to one side of the level gauge, And a receiver for receiving the electric signal and outputting a beep sound.

And the transmitter and the receiver are FM-based small-output wireless devices.

When the transmitter reaches the position of the meta contact point according to the change of the indicator of the LPG small storage tank, the signal indicating the first contact point is transmitted to the external antenna via the encoder, the delay and the transmitter.

Preferably, the transmitting unit further includes an internal antenna for externally installing a test button for confirming whether or not the operation is performed in the installation step, and switching an internal antenna to the switching conversion unit.

The receiving unit receives a signal received by the receiving antenna, decodes the received signal through an amplifier, decodes it through a decoder, generates it as a sound signal through a sound generating unit and a speaker, and outputs a signal received from the transmitting unit as a first contact and a second contact To be changed to melody and beep sound to generate sound.

Preferably, the receiving unit further includes a test button for confirming the receiving operation inside or outside.

The indicator has a first lead wire and a second lead wire that rotate according to the rotation of the magnet. The first lead wire and the second lead wire, which are in contact with the ground wire and the second lead wire which contact the first lead wire, And the second terminal line having the second terminal line.

In the present invention, a contact signal via an indicator (charge amount designation unit) for giving a contact signal to a level gauge capable of confirming the remaining amount of the tank is transmitted to a wireless transmitter, and the received signal is received by a wireless receiver installed at a destination and informed by a melody or a beep sound , The gas supplier from the gas users will be provided with the gas supply timing to enhance the convenience of the supplier and to be applicable to a number of LPG small storage tanks.

In other words, by notifying the user through the melody or beep sound, the flickering of the lamp, etc. of the remaining amount of gas set by the level gauge equipped with the chime function, the gas user can directly go to the tank and know the charging time without visually checking.

Since the level gauge of the contact structure using the contact panel is provided, it is possible to use the wireless chime of the same function manufactured and sold in the market, so that the structure can be applied with a simple structure and the manufacturing cost can be reduced. In particular, it can be applied to both small-sized storage tanks and small-sized storage tanks that are currently produced by providing a transmitter type having an interchangeable level gauge indicator and the same fastening structure as the gauge cover used in the past.

1 is an exploded view showing the overall configuration of a level gauge for a liquefied gas storage tank according to the present invention;
2 is a view for explaining the configuration of the tank remaining amount measurement device
FIG. 3 is a cross-sectional view of an embodiment of the present invention,
FIG. 4 is a cross-sectional view of an embodiment of the present invention,
5 is an enlarged cross-sectional view of the indicator of the level gauge for the liquefied gas storage tank according to the present invention
6 is a view showing a configuration of a contact of the indicator of Fig. 5
7 is a circuit diagram of a radio transmitter of a level gauge for a liquefied gas storage tank according to the present invention
8 is a circuit diagram of a radio receiver of a level gauge for a liquefied gas storage tank according to the present invention

Hereinafter, a preferred embodiment of a level gauge for a liquefied gas storage tank according to the present invention will be described in more detail with reference to the accompanying drawings.

1 to 4 show a level gauge for a liquefied gas storage tank according to the present invention, wherein FIG. 1 is an exploded view of a level gauge in a tank, and FIG. 2 is an enlarged view Fig. 3 is a cross-sectional view taken from a major portion of the present invention, and Fig. 4 is a cross-sectional view of the main part of the present invention taken along the line AA.

According to the present invention, a gas remaining amount measuring device is installed in a tank (T) in which liquefied natural gas in a liquefied state is received. The gas remaining amount measuring apparatus is connected to a level gauge 200 fixed to a gauge nozzle 100 fixed to one side of a tank T and an indicator 300 is coupled to the level gauge 200.

2, the gas remaining amount measuring device includes a float 1 having a rising or falling depending on the amount of gas in the tank T, one end connected to the float 1 and the other end connected to a direction changing gear 3 connected to the connecting bar 2. One end of the rotation shaft 4 is connected to the direction changing gear 3 and the other end of the rotation shaft 4 is connected to the level gauge 200. The direction changing gear 3 is used to change the direction of movement of the connecting bar 2 by using a bevel gear so as to change the direction of the up and down movement of the connecting bar 2 into a rotational motion in which the rotating shaft 4 rotates about the axis. The end of the rotary shaft 4 is fixed to a magnet built in the level gauge 200 and configured to rotate the magnet in the forward and reverse directions corresponding to the amount of lift of the float 1. [

The amount of rotation of the magnet of the level gauge 200 is displayed in analog form through the indicator 300 or converted to a digital value.

3 and 4 show the main characteristic construction of the level gauge for the liquefied gas storage tank according to the present invention. According to this, the transmitter body 400 is fastened to the outside of the gaseous nozzle 100. The transmitter body 400 is fastened to the gaseous nozzle 100 by a fastening screw 420 and is coupled between the transmitter body 4000 and the gaseous nozzle 100 to maintain airtightness through a gasket 410 . The gasket 410 is a rubber gasket that blocks inflow of rainwater between the gas nozzle 100 of the small storage tank and the transmitter body 400. A transparent part 402 is formed at the center of the transmitter body 400 so that the guide part of the indicator 300 can be visually confirmed. The characteristic feature of the present invention is that the transmitter cover 400 plays the role of a transmitter unlike the conventional cover.

5, the indicator 300 is constructed by inserting a magnet 330, which rotates in accordance with the rotation of the magnet of the level gauge 200, inside the case 310, And a contact panel 340 and a display unit 350 are disposed on one side of the case 310. [ A first lead wire 322 and a second lead wire 324 which elastically contact the contact panel 340 to be described later are fixed to the rotary shaft 320.

The display unit 350 displays the remaining amount of the gas on the surface of the display unit. The remaining amount of the gas is displayed in analog form by the hour hand 370 fixed to the rotation shaft 320 protruding through the display unit.

6, a ground terminal line 342 is provided on the inner side of the contact panel 340, a first terminal line 344 having a first contact 344a disposed in a circle around the ground terminal line 342, And a second terminal line 346 having a second contact 346a. The rotation shaft 320 is connected to the ground terminal line 342 and the first lead wire 344 which simultaneously contacts the first terminal line 344 and the second terminal line 346 and generates electric signals differently according to the resistance value 322 and the second lead wire 324 are fixed.

Reference numeral 380 denotes a wire connected to the contact panel 340 to transmit an electric signal, and is connected to the transmitter 400.

The level gauge for the liquefied gas storage tank according to the present invention having such a configuration is a float type level gauge for checking the level of the liquefied petroleum gas filled in the tank having an opaque structure, And to transmit and receive signals at corresponding positions through a small output wireless device using a contact panel designed to receive an electrical signal at a specific position.

That is, when the lift amount of the float 1 is transmitted to the rotary shaft 4 and the level gauge 200 is transmitted to the indicator 300 through the magnet, the indicator 300 indicates the amount of rotation in analog form through the pointer 370 And switches to an electric signal at the same time.

More specifically, the positions of the contacts moving the first lead wire 322 and the second lead wire 324 that rotate in contact with the contact panel 340 provided at the rear end of the pointer 370 are changed. That is, when the first lead wire 342 is always kept in contact with the ground terminal wire 342, the second lead wire 324 rotates. When the second lead wire 324 reaches the first contact point 344a and contacts the bent portion, When the first lead wire 344 and the ground terminal wire 342 are energized and the second lead wire 324 rotates to reach the second contact point 346a by the movement of the level gauge 200, 346 and the ground terminal line 342 are energized. Therefore, since the first terminal line and the second terminal line have different resistance values, it is possible to display the remaining amount by applying another electric signal.

7 and 8 are circuit diagrams for wirelessly transmitting and receiving electrical signals generated by the indicator 300. As shown in FIG. 7 is a circuit diagram of the transmitter. As shown in Fig. 7, the meta contact 10 (corresponding to the first contact 344a and the second contact 346a shown in Fig. 6) changes according to the change of the indicator of the indicator 200 of the LPG small- Upon reaching the position, a signal indicating the first contact is output through the transmitter. At this time, the signal is transmitted to the external antenna 18 via the encoder 12, the delay 14 and the transmitter 16. Also, it is preferable to install the test button 20 on the outside in order to check whether the operation is performed in the installation step. It is also possible to configure the internal antenna 22 by using a switching converter.

8 is a circuit diagram of a receiving unit. The receiving unit 30 receives a signal received by the receiving antenna 30 and decodes the received signal through an amplifier 32 through a decoder 34 and outputs the decoded signal through a sound generating unit 36 and a speaker 38 Signal. The signal received from the transmitter can be distinguished from the first contact and the second contact by changing the melody and beep sound to make a sound, so that the remaining amount can be confirmed by the sound difference. It is also preferable that a test button 40 for confirming the receiving operation is provided inside or outside.

The receiving unit may use a chime distributed in the market. Popular chandeliers include the inexpensive AM wireless chime and the long-range FM wireless chime, which are bell, door, and motion-sensitive, depending on how they are used. In this design, the chimble is a small oscillation type FM wireless chime, which is a small-output wireless device using 447MHz band.

It should be understood that what has been described above is merely a mere example and that the present invention is not limited thereto and that the replacement of equivalents within the category of technical ideas proposed in the present invention and simple design changes are included in the scope of protection of the present invention .

T: LPG small storage tank
1: Float 2: Connection bar
3: Redirection gear 4:
100: Gaseous nozzle 200: Level gauge
300: Indicator 310: Case
320: rotating shaft 322: first lead wire
324: second lead wire 330: magnet
340: Contact panel 342: Ground terminal wire
344: first terminal line 344a: first contact
346: second terminal line 346a: second contact point
350: Display 370: Instructions
400: Transmitter body 410: Gasket
420: fastening screw

Claims (7)

A level gauge including a magnet that rotates by the amount corresponding to the remaining amount of gas, and a level gauge for a liquefied gas storage tank for measuring the remaining amount in the tank through an indicator including a magnet coupled to the level gauge and rotating in accordance with rotation of the magnet In construction,
A transmitter body including a transmitter for receiving an electric signal for a remaining amount of the gas measured in level gauges and radiating the radio signal is integrally coupled to one side of the level gauge and receives an electric signal from a signal transmitted to the transmitter, And a level gauge for the liquefied gas storage tank
2. The liquefied gas storage tank level gauge according to claim 1, wherein the transmitter and the receiver are FM-
2. The apparatus of claim 1, wherein the transmitter transmits a signal indicating the first contact point to an external antenna through an encoder, a delay, and a transmitter when a meter contact point is reached according to a change in an indicator of the indicator of the LPG small storage tank Level gauge for liquefied gas storage tanks.
4. The liquefied gas storage tank according to claim 3, wherein the transmitter further comprises an internal antenna for externally installing a test button for confirming whether the test button is operated in the installation step, Level gauge.
The receiver of claim 1, wherein the receiver receives the signal received by the receiving antenna, decodes the received signal through an amplifier through a decoder, generates the signal as a sound signal through a sound generator and a speaker, And the second contact is separated into a melody and a beep sound to generate a sound.
The level gauge for a liquefied gas storage tank according to claim 5, wherein the receiving unit further includes a test button for confirming a receiving operation inside or outside.
2. The apparatus according to claim 1, wherein the indicator has a first lead wire and a second lead wire that rotate in accordance with rotation of the magnet, wherein the first lead wire and the second lead wire are in contact with the first lead wire, And a second terminal line having a first contact and a second contact.

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