KR200250386Y1 - An oil gauge - Google Patents

Abstract

The present invention relates to a flow meter, the present invention is a housing 10 partitioned into a sealed chamber 14 and an open chamber 16 by the partition wall 12, and the partition wall 12 between the contactless power transmission. A drive shaft 30 and driven shaft 20 adapted to transmit power by means, a drive unit 50 configured to drive the drive shaft 30 with buoyancy, and a sensing shaft operated by the drive unit 50 ( The display unit 72 after calculating the flow rate by calculating the rotation amount detector 60 and the change of the electrical change, the voltage or the resistance of the rotation amount detector 60 and the data previously inputted in advance to calculate the flow rate It is composed of a control device 70 to be displayed on. According to the present invention, it is possible to measure the flow rate easily and accurately, and it is possible to receive stable and sufficient buoyancy by installing a plurality of rotating flow members in the buoyancy weight, and also to the narrow measuring pipe. By being able to be put in, the existing storage tank can be installed.

Description

Flow meter {AN OIL GAUGE}

The present invention relates to a flow meter, and in particular, by installing a buoyant weight moving up and down under buoyancy depending on the liquid level, the rotation of the sensing shaft with a rotation amount detector engaged with the driven shaft driven by the up and down movement of the buoyancy weight The present invention relates to a flow meter configured to display a flow rate on a display unit by detecting a signal and calculating a detection signal and pre-input data.

In general, the flow meter is installed in the tank in which the liquid is stored to measure and display the amount of the stored liquid. Many types of flowmeters have been introduced, but for large fuel tanks used in gas stations, there is no separate flowmeter.They mark the long bars and insert the rods into the fuel tank. The flow rate is measured compared to the scale.

However, when measuring the flow rate using such a long rod, the flow rate measurement was not accurate, and the bottom of the fuel tank in contact with the end of the rod was caused because the rod was continuously impacting the bottom of the fuel tank. There was a problem that this easily broken.

In addition, an electronic flow meter has been introduced to solve the above problems, but it was difficult to purchase and use it easily due to its high price.

The present invention has been made to solve the problems of the prior art as described above, the technical problem of the present invention is to provide a flow meter that can easily and accurately measure the flow rate at low cost.

Another technical problem of the present invention is to provide a flow meter that can receive sufficient buoyancy and can be installed in a narrow measuring pipe and can be installed in an existing storage tank.

1 is an exploded perspective view showing a flow meter according to the present invention.

2 is a perspective view showing a coupled state of the flow meter according to the present invention.

3 is a cross-sectional view of the coupled state of the flow meter according to the present invention.

Figure 4 is a plan view showing the inside of the housing of the flow meter according to the present invention.

Figure 5a, 5b, 5c is a view showing the operating state of the buoyancy weight according to the present invention, 5a is a view showing a state before the operation of the buoyancy weight, 5b is a view showing a state in which the buoyancy is expanded, 5c is A cross-sectional plan view showing the state of buoyancy added.

Figure 6a, 6b is a view showing the operating state of the flow meter according to the present invention, 6a is a view showing the movement of the buoyancy weight, 6b is the movement state of the driven shaft and the drive shaft and the flow rate to the display by the movement of the buoyancy weight A diagram showing the state displayed.

Figure 7 is a schematic block diagram for explaining the operation of the control device according to the present invention.

<Description of Symbols for Main Parts of Drawings>

10 housing 12 partition wall

14: sealed room 16: open room

14A, 16A: Installation groove 20: Driven shaft

22: driven plate 24: first reduction gear

26A, 26B: driven shaft bearing 30: drive shaft

32: drive plate 36A, 36B: drive shaft bearing

42: driving magnet 44: driven magnet

50: drive unit 52: upper pulley

53: lower pulley 54: center weight

55: drive belt 56: stabilizer weight

60: rotation amount detector 62: second reduction gear

64: sensing axis 66: bracket

70: control device 80: buoyant weight

82,84: 1st, 2nd fixing member 86A, 86B, 86C, 86D: 1st, 1, 2, 3, 4 flowing member

The present invention for solving the technical problem as described above is a housing partitioned into an open chamber in which the interior is closed and the bottom is opened by a partition wall formed so that the installation grooves are not in communication with each other on both sides; A driven plate inserted into an installation groove on the side of the sealed chamber and rotatably installed by a driven shaft bearing is fixedly installed at one end thereof, and a first reduction gear is formed at an intermediate portion thereof, and the other end of the driven shaft bearing is formed on a side wall of the inside of the sealed chamber. A driven shaft rotatably installed; The drive plate is inserted into the installation groove on the open chamber side, is rotatably installed by a drive shaft bearing, and the drive plate for driving the driven plate by a contactless power transmission means is fixedly installed at one end, and the other end is mounted on the side wall inside the open chamber. A drive shaft rotatably installed as a bearing; An upper pulley fixedly installed with an upper gear in the middle of the drive shaft, a lower pulley having a smaller diameter than the upper pulley, and having a lower gear, a central weight installed in the pulley housing on which the lower pulley is constructed, the upper The lower gear is provided with an internal gear that is engaged with the upper and lower pulleys, and the forward and reverse rotation drive belt, a fixed weight fixed to one side of the drive belt parallel to the gravity direction, the same height as the stabilizer weight A driving unit which consists of a buoyancy weight fixedly installed on the other side of the driving belt, the forward and reverse rotation of the driving shaft by the up and down movement of the buoyancy weight by buoyancy; The second reduction gear meshing with the first reduction gear of the driven shaft is fixed to the inside of the sealed chamber by a bracket, and is fixed to the inside of the sealed chamber by a bracket, and rotates by the driving of the second reduction gear. A rotation amount detector for detecting a movement and generating a flow detection signal; And a control device for converting the detection signal of the rotation amount detector and displaying the corresponding flow rate data on the display unit by comparing the previously inputted and stored reference value data.

At this time, the contactless power transmission means is a plurality of drive magnets fixed to the outer surface of the drive plate inserted into the installation groove of the open chamber side; And a plurality of driven magnets fixed to an outer surface of the driven plate inserted into the installation groove on the side of the sealed chamber. Wherein, the driving magnet and the driven magnet is characterized in that the opposite polarity is installed so that the driving plate rotates the driven plate by the attraction between the partition wall.

The buoyancy weight is formed in a semi-cylindrical shape and engaging grooves for engaging the internal gear is inserted into the upper and lower portions of the inner surface, respectively, between the engaging grooves are formed a first space portion for insertion of the auxiliary stabilizer, the bottom of the lower portion of the first 2, the first fixing member formed by the installation end is maintained at 90-100 °; It is formed in a symmetrical shape with the first fixing member, the pressing portion for pressing the outer surface of the drive belt so that the internal gear is inserted into each engaging groove are formed on the inner side, the lower side, respectively, between the pressing portion A second fixing member having a second space part to be inserted into the stabilizer, and having a third and fourth mounting ends having symmetrical shapes with the first and second mounting ends, respectively, formed at the bottom of the lower end thereof and coupled to the first fixing member; And formed to be longer than the lengths of the first and second fixing members, and are formed to generate buoyancy so that the first, second, and third fixed members rotate only up to 90 ° in the downward direction when buoyant to the surface of the fluid. And first, second, third and fourth flow members, one end of which is arranged at the fourth installation end.

The first, second, third, and fourth flow members may be formed in a closed hollow to generate buoyancy. In addition, the first, second, third, fourth flow member is characterized in that formed of a synthetic resin material having its own buoyancy.

The buoyant weight is heavier than the stabilizer, characterized in that formed with a lighter weight than the center weight.

The control device compares and calculates the flow rate data corresponding to the data input from the A / D converter for converting the analog signal of the rotation amount detector into a digital signal with a reference value stored in a memory unit pre-input from the key input unit. And to display on the display unit.

The control device includes a key input unit for inputting reference value data; A memory unit for storing data input from the key input unit; An A / D converter for converting an analog signal of the rotation amount detector into a digital signal; And a microcomputer for displaying reference value data corresponding to a signal input through the A / D converter in the rotation amount detector.

Preferred embodiments of the present invention having the features as described above will be described in detail with reference to the accompanying drawings.

In the accompanying drawings, Figure 1 is an exploded perspective view showing a flow meter according to the present invention, Figure 2 is a perspective view of the coupled state showing a flow meter according to the present invention, Figure 3 is a cross-sectional view of the combined state of the flow meter according to the present invention, 4 is a plan view showing the inside of the housing of the flow meter according to the present invention.

As shown in the accompanying drawings, the flow meter according to the present invention has a housing 10 partitioned into a sealed chamber 14 and an open chamber 16 by a partition wall 12, and the partition wall 12 therebetween. Operated by a drive shaft 30 and driven shaft 20 adapted to transmit power by a contactless power transmission means, a drive unit 50 configured to drive the drive shaft 30 with buoyancy, and the drive unit 50. The rotation amount detector 60 is configured to detect the movement of the sensing shaft 64 and the signal of the rotation amount detector 60 and the pre-input data are calculated to calculate the flow rate and then display the flow rate on the display unit 72. It is composed of a control device (70).

This will be described in more detail as follows.

As shown in FIGS. 1 and 2, the housing 10 has a structure partitioned into a sealed chamber 14 and an open chamber 16 by a partition wall 12. The sealed chamber 14 and the open chamber 16 have a structure that is completely isolated such that gas generated from the liquid as well as the liquid does not flow into the sealed chamber 14. At this time, the open chamber 16 is the lower portion is opened.

On the other hand, mounting grooves 14A and 16A are formed at both sides of the partition 12, respectively, and driven shaft bearings 26A and drive shaft bearings 36A are fixedly installed at the centers of the mounting grooves 14A and 16B, respectively. In addition, the other driven shaft bearing 26B and the drive shaft bearing 36B are respectively installed in the side wall of the sealed chamber 14 and the side wall of the open chamber 16 at positions facing the mounting grooves 14A and 16A. At this time, the installation grooves 14A and 16A are not in communication with each other.

The upper part of the housing 10 is sealed by an upper cover, and a control device 70 electrically connected to the rotation amount detector 60 is installed on a lower surface of the upper cover and an upper surface of the housing 10 by the control device 70. The display unit 72 in which the calculated flow rate is displayed is provided.

The driven shaft 20 is installed inside the sealed chamber 14, and has a structure in which a disk-shaped driven plate 22 is formed at one end and a first reduction gear 24 is formed at the other end. Both ends of the driven shaft 20 are rotatably installed on the inner sidewalls of the partition 12 and the sealed chamber 14 by driven shaft bearings 26A and 26B, respectively. That is, a driven shaft bearing 26A fixedly installed at the center of the installation groove 14A of the partition 12 is inserted and supported at the center of the driven plate 22, and the other end of the driven shaft 20 is the sealed chamber. It is supported by the other driven shaft bearing 26B provided in the inner side wall of (14).

On the other hand, the rotation amount detector 60 is installed at the bottom of the sealed chamber 14. The rotation amount detector 60 includes a sensing shaft 64 having a second reduction gear 62 coupled to one end and a body in which a resistance wire is spirally wound, and the bracket 66 fixed to the bottom of the sealed chamber 14. When the sensing shaft 64 is rotated by the engagement of the first and second reduction gears 24 and 62, the resistance wire is configured to detect this, and this rotation amount detector 60 is generally Detailed description will be omitted.

At this time, since the actual rotation amount of the drive shaft 30 is large, it is preferable that the second reduction gear 62 meshes with the first reduction gear 24 in order to decelerate it, and the first and second reduction gears 24, 62 is preferably composed of worm gears.

Using the first and second reduction gears 24 and 62 as described above maintains easy driving even when the weight of the various weights of the driving unit 50 is reduced, and when the movement distance of the driving belt 55 is large. The distance is reduced and applied to the rotation amount so that the rotation amount detector 60 can be used to measure easily even when the depth is deep.

The drive shaft 30 is installed in the open chamber 16 to be symmetrical with the driven shaft 20 and symmetrical, and the driven plate 22 and the symmetrical driving plate 32 are formed at one end. Therefore, the drive plate 32 formed at one end of the drive shaft 30 is rotatably installed in the drive shaft bearing 36A provided in the center of the installation groove 16A on the open chamber 16 side, and the other of the drive shaft 30 is rotated. The end is supported by another drive shaft bearing 36B which is installed on the inner sidewall of the open chamber 16.

On the other hand, the driving plate 32 and the driven plate 22 is the power is transmitted by the contactless power transmission means. That is, the power of the drive shaft 30 is transmitted to the driven shaft 20 by the contactless power transmission means. Looking at the structure of the contactless power transmission means as follows.

The contactless power transmission means includes a plurality of driving magnets 42 fixedly installed on the outer surface of the driving plate 32 and a plurality of driven magnets 44 fixedly installed on the outer surface of the driven plate 22. do. At this time, the driving magnets 42 and the driven magnets 44 are installed so that different polarities face each other to generate an attractive force.

According to the contactless power transmission means configured as described above, the driving plate 32 and the driven plate 22 are integrated by the attraction force of the driving magnet 42 and the driven magnet 44 so that the power of the driving shaft 30 is contactless. It can be delivered to the driven shaft 20 in the state. In this way, the non-contact between the driven shaft 20 and the drive shaft 30 is that the harmful gas introduced into the open chamber 16 is introduced into the closed chamber 14 to damage the electrical device, in particular the rotation amount detector (60). It is to prevent.

In this embodiment, the driving shaft 30 and the driven shaft 20 are separated and the inside of the housing 10 is partitioned into partitions 12 so that the driving shaft 30 and the driven shaft 20 are configured to be installed separately. Although the state is described, the present invention is not limited thereto, and the driving shaft 30 and the driven shaft 20 may be integrally formed and a bearing supporting the shaft may be configured as a waterproof bearing, in which case the housing 10 It is also possible to partition the partition 12 of the double.

The drive unit 50 is located in the state immersed in the fluid is configured to rotate the drive shaft 30 forward or reverse by operating up and down by buoyancy, it is configured as follows.

That is, the driving unit 50 has an upper pulley 52 which is fixedly installed with an upper gear 52A at an intermediate portion of the driving shaft 30, and has a smaller diameter than the upper pulley 52 and has a lower gear ( Lower pulley 53 having 53A), center weight 54 installed in the pulley housing 54A on which the lower pulley 53 is arranged, and internal teeth engaged with the upper and lower gears 52A and 53A. Stable with a gear 55A and fixed to one side of the drive belt 55 which is wound around the upper and lower pulleys 52 and 53 and is forward and reverse rotated, and the drive belt 55 parallel to the gravity direction. The weight 56 and the buoyancy weight 80 is fixed to the other side of the drive belt 55 of the same height as the stabilizer weight 56.

At this time, the buoyancy weight 80 is heavier than the stabilizer weight 56, is formed with a lighter weight than the center weight (54). This is to ensure that the buoyancy weight 80 is always located at the bottom, and also to allow the drive belt 55 is rotated about the center weight (54).

On the other hand, the buoyancy weight (80) is formed in a semi-cylindrical and the engaging groove (82A) is formed to be engaged by the internal gear 55A is inserted into the upper, lower inner side, respectively, between each of the engaging groove (82A) The first space portion 82B is formed to insert the weight 83, the first fixing member 82 formed on the bottom surface of the lower portion of the first and second mounting ends 82C, 82D to maintain 90-100 °, It is formed in a symmetrical shape with the first fixing member 82, the pressing portion 84A for pressing the outer surface of the drive belt 55 so that the internal gear 55A is inserted into each engaging groove (82A) is the inner surface The upper and lower portions are respectively formed, and the second space portion 84B is formed to insert the auxiliary stabilizing weight 83 between the pressing portions 84A. Second and second fixing members 84, 82C and 82D, having third and fourth mounting ends 84C and 84D having symmetrical shapes, respectively, coupled to the first fixing member 82, and the first and second fixing members 84 and 82D. Absence (82,84) It is formed longer than the length of, the first, second, third, fourth installation end (82C, 82D) is formed so that buoyancy is generated so as to rotate only up to 90 ° in the up and down state by the buoyancy when contacted with the surface of the fluid The first, second, third, and fourth flow members 86A, 86B, 86C, and 86D having one end formed at 84C, 84D.

The buoyancy weight 80 is configured as described above not only to allow the buoyancy weight 80 to receive greater buoyancy, but also to be easily inserted into a small diameter measuring pipe formed in the existing fuel tank. It is for.

The first, second, third, and fourth flow members 86A, 86B, 86C, and 86D of the buoyancy weight 80 may be formed in a closed hollow to generate buoyancy, and may be formed of a synthetic resin material having its own buoyancy. Can be.

In addition, the buoyancy weight 80 is configured in such a way that the horizontal spread as described above is to prevent this because in the case of the weight having a vertical structure can not obtain a stable buoyancy because errors may occur on the oil surface. That is, the first, second, third, and fourth flow members 86A, 86B, 86C, and 86D of the buoyancy weight 80 may receive buoyancy in a state in which they are horizontally spread, so that the buoyancy may be more stably received. This is because the twist of (55) can be prevented.

The control device 70 is configured to receive a detection signal generated from the rotation amount detector 60, that is, an electrical signal (voltage or resistance value), and to extract pre-input data corresponding to the signal, and transmit the flow rate data to the housing 10. It is configured to display on the display unit 72 formed on the upper surface of the cover member. That is, the control device 70 obtains the height using the input electrical signal (voltage or resistance value), and the flow rate data corresponding to the obtained height is obtained from the flow rate data inputted for each height unit (m / m) in advance. It is composed.

As shown in FIG. 7, the control device 70 includes a key input unit 74 for inputting reference value data, a memory unit 75 for storing data input from the key input unit 74, and the rotation unit. A / D converter 73 for converting the analog signal of the total amount detector 60 into a digital signal, and the signal input from the rotation amount detector 60 through the A / D converter 73, that is, the rotation amount detector And a microcomputer 76 for displaying the stored reference value data corresponding to each voltage or resistance value on the display unit 72.

That is, the microcomputer 76 obtains a height (storage tank) using the flow data (voltage or resistance value) input through the A / D converter 73 as described above, and flow rate corresponding to the flow value data for the obtained height. Is taken from the flow rate data for each height unit input in advance through the key input unit 74 and displayed on the display unit 72.

The key input unit 74 may input a flow rate per unit of height into a ROM of the microcomputer 76 through a serial port or transmit data during remote monitoring, and change modes to view height data or view flow data. It may be provided with a mode conversion switch.

Although the display unit 72 described the state installed on the upper surface of the housing 10 as described above in the present embodiment, the present invention is not limited thereto, and the monitor box is installed at a distance when monitoring the flow rates of various storage tanks. It is possible to collect and display the flow data of each tank. This is possible because the signal of the rotation amount detector 60 is converted to digital to be transmitted over a long distance.

Referring to the operation of the present invention configured as described above in detail based on the accompanying drawings as follows.

Figures 5a, 5b, 5c of the accompanying drawings showing the operating state of the buoyancy weight according to the present invention, 5a is a view showing the state before the operation of the buoyancy weight, 5b is a view showing the state of the buoyancy added. 5c is a cross-sectional view showing a state in which the buoyancy is expanded.

1 to 5c, the flow meter according to the present invention is installed on the upper portion of the fuel storage tank (not shown), and the lower pulley 53 and the stabilization weight 56 and the buoyancy weight of the driving unit 50 ( When the 80 is inserted into the storage tank, the lower pulley 53 is positioned directly below (gravity direction) of the upper pulley 52 by the weight of the center weight 54, thus driving belt 55 It is also in a parallel state directly below, since the buoyancy weight 80 is heavier than the stabilization weight 56, it is in contact with the pulley housing 54A.

Subsequently, when the first, second, third and fourth flow members 86A, 86B, 86C, and 86D of the buoyancy weight 80 fixed to the driving belt 55 come into contact with the oil surface, the first, The 2, 3, 4 flow members 86A, 86B, 86C, 86D are rotated upwards, respectively.

That is, as illustrated in FIG. 5A, the first, second, third, and fourth flow members 86A, 86B, 86C, and 86D are all kept downward, but once they are buoyant, they are shown in FIG. 5B. As shown above, they are rotated upwardly about the axis. At this time, the first, second, third and fourth flow members 86A, 86B, 86C, and 86D have their axes (the first, second, third, and fourth flow members 86A, 86B, and 86C as shown in FIG. 5B). , 86D) is rotated upwardly with respect to the first, second, third and fourth mounting ends (axis for rotatably installing at the first, second, third and fourth installation ends (82C, 82D, 84C, 84D)), Interfering with the bottoms of the members 82 and 84 is no longer rotated upwards. In addition, as shown in FIG. 5C, the driving belts 55 are not twisted with each other when the first, second, third and fourth flow members 86A, 86B, 86C, and 86D are unfolded. The first flow member 86A or the second flow member 86B unfolded as shown in FIG. 2 is in contact with the driving belt 55 of the other side (the driving belt 55 of the side on which the stabilizer weight 56 is installed). The driving belt 55 is to prevent tangling with each other.

As described above, when the first, second, third, and fourth flow members 86A, 86B, 86C, and 86D are buoyant by fluid and rotated upward, the buoyancy weights 80 move upwards, thereby driving the upwards. The belt 55 rotates clockwise around the lower pulley 53 and the upper pulley 52. (In this case, fuel remains inside the fuel tank.) When the buoyancy weight 80 is stopped after moving, the voltage or resistance value of the rotation amount detector 60 at this time is measured. In addition, the setting of the '0' state is to place the rotation angle of the rotation amount detector 60 at the lowest resistance rotation speed and angle when the buoyancy weight 80 is at the bottom end.

This means that if there is no residual fuel in the fuel tank, the pulley housing 54A is in contact with the floor, and the display unit 72 is set to '0' based on this state.

When the fuel is introduced into the fuel tank while the installation process is completed as described above, the buoyancy weights 80 are the first, second, third and fourth flow members 86A, 86B, 86C, 86D) receives the buoyancy and moves upwards. At this time, since the first and second fixing members 82 and 84 of the buoyancy weight 80 are fixed to the driving belt 55, the buoyancy weight 80 is moved. Movement of the driving belt 55 results in the movement. That is, the driving belt 55 is rotated in the clockwise direction by rotating the upper pulley 52 and the lower pulley 53 by the movement of the buoyancy weight (80).

As such, when the driving belt 55 rotates the upper pulley 52 clockwise by the movement of the buoyancy weight 80, the upper pulley 52 rotates the driving shaft 30 as shown in FIG. 6B. Rotated. This is because the upper pulley 52 is fixed to the drive shaft 30.

On the other hand, the drive shaft 30 is connected to the open chamber 16 by both ends of the drive shaft bearings 36A and 36B (a bearing formed of a material having corrosion resistance, etc. as a material applicable to the fluid to be measured). It is freely rotatable because it is installed.

When the drive shaft 30 is rotated by the above process, the drive plate 32 inserted into the installation groove 16A on the open chamber 16 side rotates, thereby driving the contactless power transmission means. The magnet 42 rotates the driven plate 22 through the driven magnet 44 installed in the driven plate 22 of the driven shaft 20, and in turn, rotates the driven shaft 20. Is to come. In this case, the driven shaft 20 can be freely rotated because both ends thereof are installed in the sealed chamber 14 by the driven shaft bearings 26A and 26B.

On the other hand, the driven plate 22 can be rotated by the rotation of the drive plate 32 is the driving magnet 42 and the driven magnet 44 which is the contactless power transmission means so that the attraction force to each other to generate the partition ( Since the driving plate 32 and the driven plate 22 are respectively provided with 12 interposed therebetween, the rotation of the drive shaft 30 is transmitted to the driven shaft 20, and finally, the buoyancy weight 80 The movement rotates the drive shaft 30 via the drive belt 55 and rotates the driven shaft 20 through the contactless power transmission means.

As described above, the housing 10 is divided into the sealed chamber 14 and the open chamber 16 and the contactless power transmission means is adopted to drive the driving shaft 30 and the driven shaft 20 without contact. This is to prevent the rotation amount detector 60 from malfunctioning or being damaged by the harmful gas introduced into the open chamber 16.

When the driven shaft 20 is rotated as described above, the first reduction gear 24 formed on one side of the driven shaft 20 rotates the second reduction gear 62 coupled to the sensing shaft 64. Thus, the sensing shaft 64 of the rotation amount detector 60 is moved in the longitudinal direction. At this time, the rotation of the sensing shaft 64 is much slower than the rotation amount of the driven shaft 20, which is possible because the first and second reduction gears 24 and 62 are constituted by worm gears.

When the sensing shaft 64 is rotated by engagement of the first and second reduction gears 24 and 62, the sensing coil inside the rotation amount detector 60 has a different resistance value according to the rotation of the sensing shaft 64. The microcomputer 76 of the control device 70 is input through the A / D converter 73, obtains the height using the input signal, that is, the resistance value, and the flow rate data corresponding to the flow rate value for the obtained height (key The flow rate data previously input through the input unit 74 is retrieved from the memory unit 75 and displayed on the display unit 72.

Therefore, the flow rate calculated by the control device 70 is displayed on the display unit 72 of the cover member.

This means that the user can easily grasp the flow rate through the display unit 72 after injecting fuel into the fuel tank.

In this case, when there are a plurality of fuel tanks, one monitor box may be provided to display data transmitted from each fuel tank.

That is, as described above, since the signal generated from the rotation amount detector 60 is converted into a digital signal by the A / D converter 73 of the control device 70, transmission over a long distance is possible. Due to this, data transmitted from several fuel tanks is displayed on one monitor box (display unit according to another embodiment), so that the flow rate can be easily detected at a long distance.

According to the present invention, the flow meter according to the present invention is designed to rotate the drive belt and the driven shaft by rotating the drive belt using a buoyancy weight. According to the present invention, the flow rate is easily and accurately measured, and the buoyancy force is also provided. By installing a plurality of unrolling flow members in the weight can not only be stable and receive sufficient buoyancy without error, but also can be introduced into the narrow measuring pipe can be installed in the existing storage tank is provided.

In addition, by measuring the physical movement of the buoyancy weight electronically and converting it into digital data, it is possible to transmit to a long distance, and continuous real-time monitoring at a long distance, adjusting the length of the drive belt and the rotation amount detector and the control device It is possible to set the capacity and unit of measurement by adjusting the specifications of the measurement IC of the measurement IC.The flow rate is measured by calculating the flow rate according to the fine height based on the flow data based on the currently known standard when installed in the existing tank. It can be installed without, and the rotation amount detector is installed in a closed space is provided to the effect that is prevented by the harmful gas as much as possible.

Claims (7)

A housing 10 partitioned into an airtight chamber 14 and an open chamber 16 having a lower portion opened by partition walls 12 formed on both sides thereof such that the installation grooves 14A and 16A do not communicate with each other; The driven plate 22 inserted into the installation groove 14A on the side of the sealed chamber 14 and rotatably installed by the driven shaft bearing 26A is fixedly installed at one end thereof, and the first reduction gear 24 is disposed at the middle portion thereof. Is formed, and the other end of the driven shaft 20 is rotatably installed on a side wall of the sealed chamber 14 as a driven shaft bearing 26B; The drive plate 32 is inserted into the installation groove 16A on the side of the open chamber 16 and rotatably installed by the drive shaft bearing 36A and drives the driven plate 22 by a contactless power transmission means. A drive shaft 30 fixedly installed at one end and rotatably installed at a side wall of the open chamber 16 by a drive shaft bearing 36B; The upper pulley 52 which is fixedly installed with the upper gear 52A in the middle of the drive shaft 30, the lower pulley 53 is formed with a smaller diameter than the upper pulley 52 and has a lower gear 53A ), A central weight 54 installed in the pulley housing 54A in which the lower pulley 53 is arranged, and internal gears 55A engaged with the upper and lower gears 52A and 53A. The drive belt 55 wound on the pulleys 52 and 53 and rotated forward and backward, and the stabilizer weight 56 and the stabilizer weight 56 fixed to one side of the drive belt 55 parallel to the gravity direction. The driving unit 50 which consists of a buoyancy weight 80 fixedly installed on the other side of the driving belt 55 of the same height and rotates the drive shaft 30 forward and backward by vertically moving the buoyancy weight 80 by buoyancy. ; The second reduction gear 62 engaged with the first reduction gear 24 of the driven shaft 20 includes a sensing shaft 64 coupled to one end thereof, so that the closed chamber 14 is closed by a bracket 66. A rotation amount detector (60) fixedly installed therein and configured to generate a flow rate detection signal by detecting a movement of the sensing shaft (64) rotated by the driving of the second reduction gear (62); And A control device (70) for converting the detection signal of the rotation amount detector (60) and displaying the corresponding flow rate data on the display unit (72) by comparing the previously input and stored reference value data; Flow meter, characterized in that consisting of. The method of claim 1, wherein the contactless power transmission means comprises a plurality of drive magnets 42 fixedly installed on one surface of the drive plate 32 is inserted into the installation groove (16A) of the open chamber (16) side; And A plurality of driven magnets 44 fixedly installed on one surface of the driven plate 22 inserted into the installation groove 14A on the side of the sealed chamber 14; Consisting of The driving magnets 42 and the driven magnets 44 are installed to face each other with different polarities so that the driving plate 32 rotates the driven plate 22 by the attraction force with the partition 12 therebetween. Flow meter. According to claim 1, The buoyancy weight (80) is formed in a semi-cylindrical and the engaging groove (82A) is formed to be engaged by the internal gear 55A is inserted into the upper and lower inner surface, respectively, each locking groove (82A) The first space portion 82B is formed to insert the auxiliary stabilization weight 83 therebetween, and the first fixing member formed by maintaining the first and second installation ends 82C and 82D at 90-100 ° on the lower bottom surface thereof. 82); It is formed in a symmetrical shape with the first fixing member 82, the pressing portion 84A for pressing the outer surface of the drive belt 55 so that the internal gear 55A is inserted into each engaging groove (82A) is the inner surface The upper and lower portions are respectively formed, and the second space portion 84B is formed to insert the auxiliary stabilizing weight 83 between the pressing portions 84A. A second fixing member (84) having third and fourth mounting ends (84C, 84D) having symmetrical shapes with 82C and 82D, respectively, and coupled to the first fixing member (82); And The first and second fixing members 82 and 84 are formed longer than the length of the first and second fixing members 82 and 84, and are formed to generate buoyancy so that the first and second rotation members are rotated upwards by 90 ° in the downward direction when buoyant. First, second, third and fourth flow members 86A, 86B, 86C, and 86D having one end arranged at the second, third, and fourth installation ends 82C, 82D, 84C, and 84D; Flow meter, characterized in that consisting of. 4. The flow meter according to claim 3, wherein the first, second, third and fourth flow members (86A, 86B, 86C, 86D) are formed in a closed hollow to generate buoyancy. 4. The flow meter according to claim 3, wherein the first, second, third and fourth flow members (86A, 86B, 86C, 86D) are formed of a synthetic resin material having its own buoyancy. The flow meter according to claim 1, wherein the buoyancy weight (80) is heavier than the stabilization weight (56), and is lighter than the center weight (54). 2. The apparatus of claim 1, wherein the control device (70) comprises: a key input unit (74) for inputting reference value data; A memory unit 75 for storing data input from the key input unit 74; An A / D converter (73) for converting an analog signal of the rotation amount detector (60) into a digital signal; A microcomputer (76) for displaying, on the display unit (72), reference value data corresponding to a signal input through the A / D converter (73) by the rotation amount detector (60); Flow meter, characterized in that consisting of.