KR20090027719A

KR20090027719A - Photo-coupler type flow rate detector

Info

Publication number: KR20090027719A
Application number: KR1020090015990A
Authority: KR
Inventors: 이용인
Original assignee: 이용인
Priority date: 2009-02-25
Filing date: 2009-02-25
Publication date: 2009-03-17

Abstract

A photocoupler type flow rate detector is provided to improve flow measurement accuracy and transmit error information to a remote server automatically. A photocoupler type flow rate detector comprises: a flowmeter body(4) in which fluid flows inside; a flow detector(30) which is embedded inside a forking part(14) of the flowmeter body and detects the amount of the fluid flowing; a display control part(40) which is combined to be exposed at the upper part of the forking part of the flowmeter body and receives the flow detection value from the flow detector and sets up normal flow rate range; and a control part which determines error by comparing the flow value with the set value.

Description

Photo-coupler flow detection device {PHOTO-COUPLER TYPE FLOW RATE DETECTOR}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flow coupler of a photocoupler type. More specifically, the flow rate measurement device has a very high accuracy, is very easy to install, and the user has a normal flow rate value according to the type of fluid flowing into the pipe. The present invention relates to a flow coupler of a photocoupler type which enables the setting of a range and automatically transmits error information to a remote server for an error value out of the normal range.

As is well known, today's flow meters are not only critical instruments indispensable in the industrial field, but also demand from consumers in terms of production and process automation, as well as communication functions for remote flow monitoring and control. have. The flowmeter has a history of about 100 years, and the traditional flowmeter is a differential pressure type, but with the development of peripheral technologies (especially electronic and computer technologies), innovative flowmeters such as electromagnetic flowmeters have been developed one after another. It has entered the market and has solidified its place.

The following introduces the technical trends of the non-domestic flowmeter market and the market sizes of the existing flowmeters.

While the flowmeter market of traditional technology (D.P type, P.D type) is already maturing all over the world, in recent years, new flow sensor technologies have emerged and are rapidly growing as they hit the entire flowmeter market. Representative technologies such as Coriolis Mass Flowmeter, Thermal Mass Flowmeter, etc. are representative of such new technologies.

Coriolis mass flowmeters usually consist of a U-shaped tube, which is forcedly vibrated up and down. At this time, when the fluid flows into the U-shaped tube, Coriolis forces in opposite directions are generated at the inlet and the outlet, and the tube is twisted.

When the electronic pickup device is installed at the inlet and the outlet of the U-shaped tube and the amount of torsion is measured by time difference detection, the detected time difference is directly proportional to the mass flow rate, so the mass flow rate through the tube is directly measured.

Since the Coriolis mass flow meter is not influenced by the viscosity or density of the measurement fluid, theoretically, the flow rate of all fluids can be measured, and the accuracy is very high.

The heat transfer mass flow meter is composed of a gas, a heater with a built-in temperature sensor, and a separate temperature sensor that measures the fluid temperature in the conduit, and calculates the mass flow rate by calculating the measured values of these two temperature sensors in the IC. to be.

However, the Coriolis Mass Flowmeter and Thermal Mass Flowmeter have better accuracy than traditional flowmeters, but it is very difficult and difficult to install a flowmeter on a conventional pipe. Has the disadvantage of being very expensive.

On the other hand, domestic manufacturers of measuring instruments are poor in technology and technology accumulation, and they show a huge trade deficit as they depend on imports for 70-75% of the demand for measuring instruments. Therefore, if the technology development for localization is achieved, it is expected to be a technology industry that can improve the current trade reversal phenomenon as a high-tech high value-added business that can have an import substitution effect. In other words, it can be said that the national industrial policy of securing national competitiveness and intensively fostering comparative advantage industries is also in agreement.

The present invention has been made in view of the above-described state of the art, and the accuracy of the flow rate measurement is very excellent, the installation is quite easy, and the user can set the normal flow rate value range according to the type of fluid flowing into the pipe. It is an object of the present invention to provide a photocoupler type flow rate detection device that can automatically transmit error information to a remote server for an error value out of a normal range.

In order to achieve the above object, according to a preferred embodiment of the present invention, in the flow rate detection device for measuring the flow rate is mounted in the middle of the pipe flowing the fluid, pipe coupling for connecting the pipes to the left and right sides, respectively A flow meter body having a stage formed therein, and a branched end for coupling the flow rate detection portion and the display manipulation portion to a predetermined portion of the outer circumference thereof, and having a fluid flowing therein; A flow rate detecting unit for detecting an amount of fluid flowing by a rotating body embedded in a branch end of the flow meter body and rotated by a fluid flowing into the flow meter body; A display manipulation unit coupled to an upper portion of the branch end of the flowmeter body to receive and display a flow rate detection value from the flow rate detection unit, and to set a range of a normal flow rate value; And a control unit configured to receive and set a set value for a normal flow rate from the display manipulation unit, to output a flow rate value applied from the flow rate detection unit, and to determine whether there is an error by comparing the flow rate value with the set value. A coupler type flow rate detection device is provided.

Preferably, the flow meter body has a male thread formed on the outer periphery of the pipe coupling end formed at both ends thereof, and is configured to be coupled to the pipe by an assembly cap through an O-ring, and the outer end of the branch end formed at a predetermined portion of the outer periphery thereof. There is provided a photocoupler type flow rate detection device, characterized in that the male screw is formed on the periphery and configured to couple the display operation portion by the assembly cap via the O-ring.

Preferably, a flow coupler of a photocoupler type is provided between the inner circumferential edge of the branch end and the flow rate detecting part further including a bushing for closely contacting the flow detecting part to the inner circumferential edge of the branch end.

Preferably, the flow rate detection unit and the body for supporting the rotating body; A hinge bracket installed on an upper surface of the body to support a rotating body coupled to the center; A photo coupler coupled to the inside of the body to partially expose the upper portion of the body and generating a pulse signal by intermittent rotation of the body; The hinge coupler is coupled to the hinge bracket and is provided with a photocoupler type flow rate detection device, comprising a rotating body that is rotated by applying a flow resistance of a fluid.

Preferably, the display operation portion and the body constituting the appearance; A key input unit provided on the front surface of the body and configured to set a range of a normal flow rate value, the flow rate maximum value and minimum value; An LCD provided on the front of the body and configured to receive and display a flow rate detection value from the flow rate detection unit; Provided is a photocoupler type flow rate detection device comprising an LCD driver for driving the LCD.

Preferably, the flash memory for storing the range data of the normal flow rate value set through the display operation unit; An SRAM storing a calculation algorithm for calculating a flow rate value through the pulse value and the flow cross-sectional area applied from the flow rate detection part; A photocoupler type flow rate detection device is further provided, further comprising a timer for calculating a flow time.

Preferably, there is provided a photo-coupler type flow rate detection device further comprising a communication port and a communication module for transmitting error information to the remote server when the control unit determines the error.

Preferably, a power supply for supplying power is further provided, the power supply comprising: an AC input unit; An AC / DC converter for converting AC power into DC; A DC input unit configured of a DC / DC converter for maintaining a DC rating; A photocoupler type flow rate detection device, which is configured as one of DC / DC converters maintaining a DC rating, may be configured to be directly connected to a battery.

Preferably, the rotating body is provided with a circular rotating plate on both sides, the hinge shaft is connected to the center of the rotating plate is formed, a radial blade is formed radially on the outer periphery of the hinge axis, the rotary blades of the lower both ends There is provided a photocoupler type flow rate detection device, characterized in that the incision is formed in the structure to be able to rotate without interference of the fixed photocoupler.

Preferably, the photocoupler and the body made of "H" shape; An incision is formed in an upper portion of the body, and a light emitting diode and a light receiving diode are embedded in both inner portions of the incision, and both ends of the lower portion are provided with a photocoupler type flow detection device. do.

The photocoupler type flow rate detection device according to the present invention can detect the pulse value generated by the photocoupler intermittent by the rotation of the rotating body to detect the flow rate very precisely, and can simply cut the existing pipe and install it. As a result, it is very easy to install and has a high compatibility.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail with reference to drawings.

1 is a perspective view showing the external appearance of a photocoupler flow rate detection apparatus according to an embodiment of the present invention, Figure 2 is an exploded perspective view showing the configuration of a photocoupler flow rate detection apparatus according to an embodiment of the present invention 3 is a front sectional view showing a configuration of a photocoupler type flow rate detection device according to an embodiment of the present invention.

Referring to this, the photocoupler-type flow rate detection device 2 according to an embodiment of the present invention has a very high accuracy in measuring the flow rate, is very easy to install, and the user depends on the type of fluid flowing into the pipe. It is possible to set the normal flow value range so that error information can be automatically transmitted to the remote server for the error value out of the normal range.

To this end, in the photocoupler type flow rate detection device 2 according to an embodiment of the present invention, in installing a pipe through which a fluid flows, a flow rate detection device 2 may be newly installed, or a pipe already installed. It can be installed by simply working on it.

In the photocoupler flow rate detection device 2 according to an embodiment of the present invention, a pipe coupling end 10 for connecting the pipes 28 to the left and right side ends thereof is formed, and a flow rate is provided at a predetermined portion of the outer circumference thereof. Branch portion 12 for coupling the detection unit 30 and the display control unit 40 is formed, there is provided a flowmeter body 4 through which the fluid flows.

In more detail, the flowmeter body 4 has a male screw formed on the outer circumference of the pipe coupling end 10 formed at both ends thereof, and the flow chamber 6 is hollow in the flowmeter body 4. Since it is formed in the coupling end 10, it is comprised so that the pipe 28 may be inserted in the flow chamber 6, and couple | bonds. At this time, since the pipe coupling end 10 is coupled by the assembly cap 26 through the O-ring 22 in a state in which the pipe is coupled to the inside of the pipe coupling 10, the pipe 28 has a large diameter in a certain range. To small diameters can be combined.

In addition, at the rear end predetermined portion of the pipe coupling end 10, when the assembly cap 26 is coupled, a step 8 is formed to fix the position of the O-ring 22.

On the other hand, the flow meter body 4 has a branch portion 12 formed at its outer circumference predetermined portion, the branch portion 12 is formed with a branch end 14 extending from the outer circumferential predetermined portion, the branch end The outer periphery of (14) is formed with a male screw 18 and step 16, the display operating portion 40 is provided via the O-ring 22 and the assembly cap 24 (hereinafter, referred to as the first assembly cap). Combined.

The first assembly cap 24 is formed in a ring shape having a through hole 24b formed therein, like the other assembly cap 26, and an internal thread 24a coupled to the male screw 18 is formed at an inner circumference thereof. It is.

On the other hand, a bushing 20 is further provided between the inner circumference of the branch end 14 and the flow rate detecting unit 30 to fix the flow rate detecting unit 30 to the inner circumference of the branch end.

In addition, the flow coupler of the photocoupler type according to an embodiment of the present invention is embedded in the branch end 14 of the flowmeter body 4, and flows into the fluid flowing into the flowmeter body 4. Due to the rotating body (see FIG. 4: 308) rotated by this, the flow rate detection part 30 for detecting the quantity of the fluid which flows is comprised. The flow rate detection unit 30 will be described in detail later.

In addition, coupled to the upper portion of the branch 14 of the flow meter body 4 is exposed, the display operation unit 40 for receiving and displaying the flow rate detection value from the flow rate detection unit 30, and set the range of the normal flow rate value ) Is configured. The lower surface of the display manipulation unit 40 is embedded in the branch end 14 of the flow meter body 4 in a state in which the flow rate detecting unit 30 is coupled, and is coupled to the lower surface of the display operating unit 40 by the first assembling cap 24. It is firmly coupled to the branch end 14.

On the other hand, the photocoupler type flow rate detection device 2 according to an embodiment of the present invention is configured inside the display manipulation section 40, and the flow rate detection device 2 is operated from the key input section 46 of the display manipulation section 40 to the normal flow rate. And a control unit (see FIG. 7: 78) for setting and receiving the set value, outputting the flow rate value applied from the flow rate detection unit 30, and comparing the flow rate value with the set value to determine whether there is an error. .

In more detail, the display manipulation unit 40 has a body 42 constituting the outer shape of the cylindrical shape, the predetermined portion of the upper surface of the body 42 to set the range of the normal flow rate value consisting of the maximum flow rate value and the minimum value Is provided with a key input unit 46 for, is provided on the front of the body 42, the LCD 44 for receiving the flow rate detection value from the flow rate detection unit 30 is displayed on the screen, the LCD And an LCD driver (see Fig. 7) 76 for driving 44. As shown in FIG.

Therefore, the photocoupler flow rate detection device 2 according to an embodiment of the present invention is intermittent by the rotation of the rotating body 308 provided in the flow rate detection unit 30 (see Fig. 6). The flow rate can be detected very precisely by detecting the pulse value generated at 320, and since the existing pipe 28 can be simply cut and installed, the installation is very easy and the device is highly compatible.

Figure 4 is a perspective view showing the assembled state of the flow rate detection unit included in the photocoupler flow rate detection apparatus according to an embodiment of the present invention, Figure 5 is a photocoupler flow rate detection apparatus according to an embodiment of the present invention It is a perspective view which shows the rotating body contained in a flow detection part.

Referring to this, the flow rate detection unit 30 has a body 302 for supporting the rotating body 308 has a cylindrical shape, the upper surface of the body 302 for supporting the rotating body coupled to the center Hinge brackets 306 are spaced apart from each other.

In addition, the photo coupler 320 is coupled to the inside of the body 302 in a state partially exposed to the upper portion of the body 302, intermittent by the rotation of the rotating body 308 to generate a pulse signal, It is hinged to the hinge bracket 306, the rotating body 308 is configured to rotate by receiving the flow resistance of the fluid.

At this time, the rotating body 308 is provided with a circular rotating plate 316 on both sides, the hinge shaft 312 is connected to the center of the rotating plate 316 is configured, the outer periphery of the hinge shaft 312 Rotating blade 310 is formed radially, the rotary blade 310 has a cutout portion 314 is formed at both ends of the lower, it is a structure that can rotate without interference of the fixed photocoupler 320 have.

In addition, the inside of the hinge shaft 312 is configured in a hollow (310a) state to reduce the resistance during the initial rotation of the rotary blade 310.

FIG. 6 is a view illustrating a photocoupler included in a flow rate detecting unit of a photocoupler type flow rate detecting apparatus according to an embodiment of the present invention.

Referring to this, the photocoupler 320 has a body 322 having an “H” shape, and an incision 323 is formed inside the upper end of the body 322. The cutout 323 is a space in which the rotary blade 310 can rotate, and light emitting diodes 324 and light-receiving diodes 326 are embedded at both inner sides of the cutout 323, respectively, and at the lower end thereof. Terminal lines 304 are provided on both sides.

Therefore, when the photocoupler 320 is operated to irradiate infrared light from the light emitting diode 324 to the light receiving diode 326, the light receiving diode 326 generates a voltage of “1”, and in that state When the rotary blade 310 is rotated by fluid flowing into the flowmeter body 4, the rotary blade 310 is irradiated from the light emitting diode 324 to the light receiving diode 326. Therefore, the light receiving diode 326 generates a pulse signal in which "1" and "0" are repeatedly generated.

The photocoupler type flow rate detection device 2 according to an embodiment of the present invention can detect the flow rate of the fluid flowing through the pulse signal, and detect the flow rate of the fluid using the cross-sectional area of the pipe 28. can do.

7 is a block diagram illustrating a circuit configuration of a photocoupler type flow rate detection device according to an embodiment of the present invention.

Referring to this, the control unit 78 included in the photocoupler type flow rate detection device 2 according to an embodiment of the present invention is a normal set through the key input unit 46 of the display control unit 40 therein. A flash memory 80 is provided for storing the range data of the flow rate value (flow rate maximum value and minimum value), and a calculation algorithm for calculating the flow rate value through the pulse value and the flow cross-sectional area applied from the flow rate detection unit 30 is provided. A stored SRAM 82 is provided and further includes a timer 84 for calculating the flow time.

In addition, in the photocoupler type flow rate detection apparatus 2 according to an embodiment of the present invention, a communication port 86 and a communication module 74 for transmitting error information to a remote server when the controller 78 determines an error. ) Is further provided, and a relay output unit 72 for driving the communication module 74 is connected to the communication module 74.

On the other hand, the photocoupler flow rate detection device 2 according to an embodiment of the present invention is further provided with a power supply 50 for supplying power. At this time, the power supply 50 may be composed of any one of AC input means 52, DC input means 60, the battery 66 of the power input means, AC input means 52 is a commercial power stage and An AC input unit 54 connected to receive AC power; An AC / DC converter 56 for converting AC power applied from the AC input unit 54 into DC; It consists of a DC / DC converter 58 for converting the DC power applied through the AC / DC converter 56 to the required rated DC power.

The DC input unit 60 includes a DC input unit 62 for receiving a DC power supplied through a battery or a solar cell having a capacity that cannot be directly connected to the apparatus and driven; It is composed of a DC / DC converter 64 for converting the applied DC power supply to the required rated DC power supply, and in the case of the battery 66 of the same rated voltage as the power supply of the device can be configured in direct connection.

With reference to the accompanying drawings, the function and action of the photocoupler type flow rate detection apparatus according to an embodiment of the present invention of the above configuration will be described in detail.

The photocoupler flow rate detection device 2 according to an embodiment of the present invention may be installed in a predetermined middle of the pipe 28 at a place where a pipe is newly installed, and in the middle of the pipe 28 already installed. It can also be installed.

When installed in the middle of the pre-installed pipe 28, the photocoupler type flow rate detection device 2 according to an embodiment of the present invention because the assembly cap 26 and the O-ring 22 are formed at both ends thereof, respectively. After cutting the installation pipe 28, the pipes 28 cut into the inside of the body 4 of the flow rate detection device 2 are respectively inserted, and the O-rings 22 are formed on the body 4. 8) When the assembly cap 26 is fastened in a state of being in close contact with each other, the flow rate detecting device 2 can be simply installed on the line of the pipe 28 provided in advance.

In a state where the flow coupler 2 of the photocoupler type according to the embodiment of the present invention is installed, the user sets the flow rate error range by using the key input unit 46 formed on the display manipulation unit 40. That is, the user sets the maximum value and the minimum value of the flow rate through the key input unit 46, and determines the value out of the range as a detection error.

The reason why the user sets the flow rate maximum value and the minimum value directly through the key input unit 46 is that there is a difference in the value set according to the type of the fluid. Will be set.

When the flow coupler 2 is driven while the flow coupler 2 of the photocoupler type is installed in the middle of a flow path of the pipe, the photocoupler 320 is operated to emit light. Infrared light is irradiated to the light receiving diode 326.

Then, the light receiving diode 326 generates a voltage of "1", and in that state, the fluid flows inside the flowmeter body 4, whereby the rotary blade 310 is rotated, the rotary blade ( 310 intermittently irradiates the infrared light irradiated from the light emitting diode 324 to the light receiving diode 326, so that a pulse signal of repeatedly generating “1” and “0” is generated in the light receiving diode 326. Is generated.

At this time, the controller 78 checks the start time and calculates a pulse signal for each time, so that the flow rate detection device 2 can detect the flow rate of the fluid flowing through the pulse signal, The cross-sectional area can be used to detect the flow rate of the fluid.

If a flow rate that is out of the range of the flow rate value set by the user is detected, the controller 78 generates a relay control signal through the relay output unit 72 and the communication module 74 due to switching of the relay. By transmitting an error signal to the remote server 100 via the, the remote monitor can recognize that the flow rate detection device 2 is broken.

The error signal transmitted through the communication module 74 includes a unique ID number of the corresponding flow detection device 2.

On the other hand, the photocoupler type flow rate detection apparatus according to an embodiment of the present invention is not limited to the above embodiment, but various modifications can be made without departing from the technical gist of the present invention.

1 is a perspective view showing the external appearance of the photocoupler type flow rate detection apparatus according to an embodiment of the present invention,

2 is an exploded perspective view showing the configuration of a photocoupler flow rate detection apparatus according to an embodiment of the present invention,

Figure 3 is a front sectional view showing the configuration of a photocoupler type flow rate detection apparatus according to an embodiment of the present invention,

Figure 4 is a perspective view showing the assembled state of the flow rate detection unit included in the photocoupler type flow rate detection apparatus according to an embodiment of the present invention,

Figure 5 is a perspective view showing a rotating body included in the flow rate detection unit of the photocoupler type flow rate detection apparatus according to an embodiment of the present invention,

Figure 6 is a view showing a photocoupler included in the flow rate detection unit of the photocoupler type flow rate detection apparatus according to an embodiment of the present invention,

* Description of the symbols for the main parts of the drawings *

4: flow meter body, 12: branch,

14: branch stage, 26: assembly cap,

28: pipe, 30: flow rate detection unit,

40: display control unit, 308: the rotating body,

320: photocoupler.

Claims

In the flow rate detection device for measuring the flow rate is mounted in the middle of the pipe flowing fluid,

A flowmeter body having a pipe coupling end for connecting the pipes to the left and right side ends thereof, and a branching end for coupling the flow rate detection unit and the display operation unit to a predetermined portion of the outer periphery thereof, and having a fluid flowing therein;

A flow rate detecting unit for detecting an amount of fluid flowing by a rotating body embedded in a branch end of the flow meter body and rotated by a fluid flowing into the flow meter body;

A display manipulation unit coupled to an upper portion of the branch end of the flowmeter body to receive and display a flow rate detection value from the flow rate detection unit, and to set a range of a normal flow rate value;

And a control unit configured to receive and set a set value for a normal flow rate from the display manipulation unit, to output a flow rate value applied from the flow rate detection unit, and to determine whether there is an error by comparing the flow rate value with the set value. Coupler type flow detection device.

According to claim 1, wherein the flow meter body is a male thread formed on the outer periphery of the pipe coupling end formed on both ends, is configured to be coupled to the pipe by the assembly cap via the O-ring, the branch formed in a predetermined portion of the outer periphery A male coupler is formed on the outer periphery of the stage, and the flow coupler of the photocoupler type, characterized in that configured to couple the display operation portion by the assembly cap via the O-ring.

The flow coupler of claim 1, further comprising a bushing between the inner circumferential edge of the branch end and the flow rate detecting unit to close the flow detecting part to the inner circumferential edge of the branch end.

The method of claim 1, wherein the flow rate detection unit,

A body for supporting the rotating body;

A hinge bracket installed on an upper surface of the body to support a rotating body coupled to the center;

A photo coupler coupled to the inside of the body to partially expose the upper portion of the body and generating a pulse signal by intermittent rotation of the body;

The hinge coupler is coupled to the hinge bracket, the flow rate detection device of the photocoupler type, characterized in that consisting of a rotating body is applied to the flow resistance of the fluid.

The display apparatus of claim 1, wherein the display manipulation unit comprises:

A body constituting the appearance;

A key input unit provided on the front surface of the body and configured to set a range of a normal flow rate value, the flow rate maximum value and minimum value;

An LCD provided on the front of the body and configured to receive and display a flow rate detection value from the flow rate detection unit;

A photocoupler type flow rate detection device, characterized in that consisting of an LCD drive unit for driving the LCD.

The flash memory device of claim 1, further comprising: a flash memory configured to store range data of a normal flow rate value set through the display manipulation unit;

An SRAM storing a calculation algorithm for calculating a flow rate value through the pulse value and the flow cross-sectional area applied from the flow rate detection part;

Photocoupler flow rate detection device further comprises a timer for calculating the flow time.

The apparatus of claim 1, further comprising a communication port and a communication module for transmitting error information to a remote server when the controller determines an error.

The apparatus of claim 1, further comprising a power supply for supplying power, the power supply comprising: an AC input unit; An AC / DC converter for converting AC power into DC; A DC input unit configured of a DC / DC converter for maintaining a DC rating; A DC / DC converter for maintaining a DC rating, the flow rate detection device of the photocoupler type, characterized in that the battery is configured by connecting directly.

According to claim 4, The rotating body is provided with a circular rotating plate on both sides, the hinge axis for connecting the center of the rotating plate is configured, the rotary blade is formed radially on the outer periphery of the hinge axis, the rotary wing Is cut portions formed at both ends of the lower, the photocoupler flow rate detection device, characterized in that it can rotate without interference of the fixed photocoupler.

5. The apparatus of claim 4, wherein the photocoupler comprises: a body made of “H” shape; A cutout is formed in an upper portion of the body, and a light emitting diode and a light receiving diode are embedded in both inner portions of the cutout, and both ends of the lower portion are provided with terminal lines.