KR100476180B1 - Gas dispenser having laser detector and control method thereof - Google Patents

Abstract

The present invention improves the quality of remote monitoring function and control characteristics, deterioration of water quality, odor generation due to excessive disinfection, and excessive chemical cost due to the inaccuracy of the actual measurement of the gas dispenser used. To provide a gas injector equipped with a laser detector and a control method thereof,

A gas injector equipped with a laser detector is connected between an upper fixture and an intermediate body, a flow meter having a floating body embedded therein, and connected between the lower fixture and an intermediate body, and equipped with a magnet filter and a gas filter therein. A control method of a gas injector equipped with an injection adapter and a laser device connected to an upper portion of the upper fixture and having a light emitting part and a light receiving part to sense a position of the floating body, A calculation step of obtaining an output by calculating a filter amount and an output value of the laser sensor to remove unnecessary signals during laser driving, and a normal processing step of operating the value obtained in the calculation step within a scale range of the flow meter; In the normal processing step, when the output value of the range of the scale value of the flow meter is composed of an output step of calculating and outputting the value And using the injection amount sensing step.

Description

Gas dispenser having laser detector and control method

The present invention relates to a gas injector equipped with a laser detector and a control method thereof.

More particularly, the present invention relates to a device for mounting a laser sensor to sense an injection amount of a supplied gas and to accurately supply a desired amount of gas, and a method of controlling the device.

Human society always needed water and developed like water. So far, disinfectants that disinfect water (drinking water, drinking water, sewage, etc.) have been using chlorinated gas for decades and will continue to be used.

However, when disinfecting liquefied chlorine that is being used as an excessive disinfectant, it may be combined with other chemicals in water to produce substances that are harmful to the human body.

Therefore, in order to solve such a problem in the past, to prevent excessive gas amount supply due to a malfunction of the gas injection device, and to enhance the remote monitoring function, efforts have been made to realize optimum control, but the following problems have occurred.

(1) Excessive error in gas injection volume measurement

It is measured that gas is injected even when air is inflowed or gas is exhausted by converting the opening degree of gas control valve into gas injection amount during gas injection.

(2) Remote monitoring function weak

The function of the vacuum switch is weak due to the incorrect operation of the vacuum switch because it transmits the transmission signal by the opening of the gas injection valve and the interlock of the vacuum switch.

(3) Poor precision control function

If the gas injection quantity measurement is incorrect, the reliability of quantitative injection and precision control will be low due to the weakness of the remote monitoring function.

(4) Measurement error of actual quantity by inductive

The float position tracking device is mounted on the glass tube side of the gas flowmeter to operate the switch according to the position of the float, and detects and transmits a change in resistance or inductance according to the switch action as a gas injection amount. Large area decreases resolution.

The present invention is to solve the above problems,

Due to the inaccuracy of the actual measurement of the gas dispenser (gas dispenser) used, it is possible to improve the quality of remote monitoring and control characteristics, deterioration of water quality, odor caused by excessive disinfection, and excessive chemical cost. It is an object of the present invention to provide a gas injector equipped with a laser detector and a control method thereof.

Another purpose is to measure the distance in real time with the laser when the floating body in the flow meter moves up / down according to the flow rate of gas and stops at the point coinciding with the gas injection rate. It is an object of the present invention to provide a gas injector equipped with a laser detector capable of calculating and a control method thereof.

Another object is to provide a laser detector capable of preventing the steel container used for storing, transporting, or injecting liquefied gas to be corroded by the iron contained in the gas component.

The gas injector equipped with the laser detector of the present invention for achieving the above object is connected between an upper fixture and an intermediate body, a flow meter having a floating body embedded therein, and connected between the lower fixture and an intermediate body. , An injection adapter having a magnet filter and a gas filter embedded therein, and a laser device connected to an upper portion of the upper fixture and having a light emitting part and a light receiving part to detect a position of the floating body. In addition, the flow meter is a floating body is built in the interior is characterized in that the transparent material or made of a non-metal material strong corrosion resistance.

The injection adapter is configured to be assembled and disassembled through the lower stopper of the lower fixing body, and has a passage through which gas can flow in the upper and lower fixing bodies and the intermediate body connected to the upper and lower fixing bodies, respectively. will be.

In addition, a control method of a gas injector equipped with a laser detector includes a calculation step of calculating an output value of a laser sensor and a filter amount for removing unnecessary signals when driving a laser, and a value of the flow meter using the value obtained in the calculation step. The injection amount detection step comprises a normal processing step for operating within the range of the control, and an output step of calculating and outputting a value when the output value of the scale range of the flow meter is output in the normal processing step. It has a step of judging whether the floating body is in the lower measurement range of the flow meter, a step of judging whether the floating body is in the upper measurement range of the flow meter, and a step of outputting a forced signal outside the range of the above step.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a path that is mixed with water when the gas is introduced.

The gas flowing through the gas filter 1 is supplied through the gas injector 2 so that the gas flows into the ejector 4 by the open opening angle of the valve driving device 3. Water is introduced into the other side of the ejector 4 so that the gas mixed with the water in the ejector 4 flows out into the water tank.

The automatic control unit 5 connected between the gas injector 2 and the valve driving device 3 senses the amount of gas flowing into the gas injector 2, and controls the valve driving device 3 by the amount of gas desired by the user. And the opening angle (valve opening angle) of the valve driving device 3 is controlled by comparing the value fed back the amount of outflow gas of the valve driving device 3 with the amount of gas applied to the gas injector 2. The desired amount of gas is obtained.

As a result, since the amount of gas flowing into the gas injector 2 becomes a reference value in comparison with the automatic control unit 5, it becomes a major variable in the accurate gas amount injection and remote control monitoring system. To the gas injector.

In addition, the flowchart of FIG. 4 measures the amount of gas of the gas injector 2 and inputs it to the automatic control unit 5, and a laser showing the driving sequence of the valve drive device 3 and the automatic control unit 5. FIG. The control method of the gas injector with a detector is shown.

The path relationship driven by pressure in the path mixed with water during the injection of the gas of FIG. 1 is omitted since the vacuum state is maintained by using a pressure switch in a known system, which is the same as the flow of gas.

FIG. 2 is a partial sectional view showing a gas injector used for the present disease, and shows that a gas inlet 2 is formed between the upper fixture 11 and the lower fixture 12.

In the upper fixing body 11, the gas outlet 13 is fixed to the valve 14, and in the lower fixing body 12, the gas inlet 15 is fixed to the valve 24. .

In addition, the lower stopper 16 is attached to the lower part of the lower fixture 12 so that the lower injection adapter 17 is inserted into the lower fixture 12.

 The laser device 19 is mounted on the upper part of the upper fixing body 12 via the upper cap 18, and 20 and 21 are light emitting parts and light receiving parts, respectively.

The upper and lower fixing bodies 11 and 12 are configured to fix the flow meter 25 and the injection adapter 17 through the intermediate bodies 22 and 23 having gas passages formed therein.

The flow meter 25 should be made of transparent glass or non-corrosive non-metallic material and be visible. In addition, the inside of the flow meter 25 is floated up and down depending on the amount of gas supplied with the floating body 30 is built-in, this floating state is detected by a laser.

The upper and lower fixing bodies 11 and 12 and the intermediate bodies 22 and 23 connected to the upper and lower fixing bodies 11 and 12 are tightly fixed through the 0 ring, respectively, and the reference numerals thereof are omitted.

 The injection adapter 17 mounted in the lower fixture 12 is shown in more detail in FIG. 3.

3 is an enlarged cross-sectional view in which the injection adapter 17 used in the present invention is mounted, and as described above, the injection adapter 17 is built into the lower fixing body 12, and then the lower plug 16 is attached to the lower plug 16. It fixed by that.

The injection adapter 17 serves to remove impurities as a kind of filter. The magnetic filter 31 is inserted into the center of the adapter, and the gas filter 32 is mounted outside the magnet filter 31 to be fixed in the body 34. It consists of the sieve 33, and the disassembly and assembly are comprised freely in the lower fixed body 12. As shown in FIG.

In the present invention configured as described above, when the gas flows into the gas inlet 15 of FIG. 3, after the impurities are removed from the gas filter 32, the iron contained in the gas is stuck to the magnet filter 31. Therefore, only pure gas components are introduced into the gas injector 2 of FIG. 2.

If the iron component is deposited in the magnet filter 31 due to prolonged use and the gas passage is blocked, or the impurity is deposited in the gas filter 32 and the gas passage is blocked, open the lower cap 16 and replace the injection adapter 17. Just do it.

In FIG. 2, when the gas flowing into the lower part flows out through the flow meter 25 to the gas outlet 13, the floating body 30 in the flow meter 25 is suspended by the pressure of the gas, and the suspended state By detecting the gas amount can be calculated.

This floating state is detected by calculating a value that the beam from the light emitting portion 20 of the upper laser device 19 is reflected by the floating body 30 and input to the light receiving portion 21 as described later (FIG. 4). Done.

4 is a flowchart showing a driving state of the present invention.

The flow chart is composed of three parts, the injection amount detecting step (S100) for detecting the gas injection amount flowing into the gas injector (2),

A valve for controlling the valve opening and closing amount of the valve driving device 3 by receiving the output value of the automatic control processing step (S200) and the automatic control operation step for calculating by comparing the gas injection amount flowing into the injection amount detection step and the set gas injection amount It consists of a control step (S300). Injection amount detection step (S100) is a calculation step (S5) to obtain the output by calculating the filter amount and the output value of the laser sensor to remove unnecessary signals during laser driving,

A processing step (S6-S9) for operating the value obtained in the calculation step within the scale value range of the flow meter 25, and an output step of calculating and outputting the value when the scale value is output in the processing step ( S11, S12).

In the automatic control processing step S200 of comparing the gas injection amount introduced into the injection amount detection step with the set gas injection amount, the values of the signal input step S21 and the injection amount target value setting step S22 are calculated in step S23. In comparison, the control deviation is obtained, and then the control operation unit performs arithmetic processing (S24) to output the control signal to step S25.

In the valve adjusting step (S300), the control signal of the step (S25) is received, and the flow proceeds to the step (S32) to drive the driving motor to open the injection amount control valve of the valve driving device (3) of FIG. 1.

In addition, the feedback sensor step S31 detects the driving of the driving motor and feeds it back to the control signal output so that the driving motor rotates exactly as the desired driving amount. In particular, the processing sequence of the automatic control processing step (S200) and the valve control step (S300) is used as it is widely used in a general control circuit.

However, the injection amount detecting step (S100) of detecting the injection amount of gas has undergone various steps to calculate an accurate comparison value.

That is, the laser drive step S1 repeatedly generates a laser to the light emitting unit 20 of FIG. 1 after applying power and detects the signal value input to the light receiving unit 21 through step S2. . However, in the laser measurement, various noises and the like become large, so that the range value of the filter output in the filter amount indicating step S3 and the measured value are calculated in the calculation step S5 to obtain an accurate detection value.

This detection value corresponds to the value of the scale value corresponding to the state in which the floating body 30 in the flow meter 25 of FIG. 2 is suspended by the gas pressure. However, when the float 30 is present at a portion other than the normal scale of the flow meter 25, that is, the float 30 is located below the gas flow without being introduced and is present or excessively below the measurement scale. In the case where the gas pressure is high and the floating body 30 exists above the measurement scale, a corresponding measure is required.

In the present invention, if it is determined whether the float is within the below measurement range in step S6, and if it is determined whether the float is within the above measurement range in step S7, the float is within the normal range of the scale of the flow meter 25. The gas supply amount is measured as the detection signal input in the signal operation step S10.

However, if it is determined in step S6 whether the float is within the following measurement range, if it is outside the below measurement range (no gas supply), the flow proceeds to step S8 to output the maximum value, and in step S7 the float is measured above If the above measurement range is exceeded when judging the application within the range, the lowest measured value is output because the gas is in an oversupply state at step S9.

That is, since the floating body 30 is close to the laser machine 19 when excessive gas is supplied, the output value is "0" which is small, and when the gas is not supplied, the floating body 30 is placed on the bottom. Since there is a maximum distance with the laser paper 19, the maximum value is output to prevent the error occurring outside the measurement range.

Therefore, the measured value at the time of measuring the laser machine is in the range of 4 to 20 miller amperes, and in the normal range, the measured range is outputted in the inverse of the distance.

In step S11, the output is generated. When there is no signal in steps S8 and S9, the signal is outputted by the signal operation step S10 and oscillated. The oscillated signal is analogized in step S12. The signal is converted to the next stage.

Eventually, the processing steps (S6-S9) can be used to prevent the occurrence of errors, and accurate measurement values can be obtained when arithmetic the supply amount of gas to the floating body, and the valve driving device of FIG. 1 as described above. To control the opening of the valve.

As described above, in the present invention, the floating body in the flow meter moves up and down according to the flow rate of the gas at the time of gas supply, and stops at the point coinciding with the injection amount of gas. The quantity can be calculated and the steel container, vaporizer and steel pipe used for storing, transporting and injecting liquefied gas are prevented by using a magnet filter to prevent corrosion in the pipe due to the iron contained in the gas. You can do it.

(1) Improved accuracy of gas injection

The accuracy of the conventional vacuum suction gas injector is very low accuracy of ± 4.0% level, but the present invention can realize high accuracy of ± 0.5%.

(2) Improved reliability of injection rate control

Although it was difficult to maintain gas supply stability due to inaccuracy and error of data, the present invention improves the reliability of injection rate control and enables safe control.

(3) prevention of water quality accidents

In case of gas injection (chlorine, sulfurous acid, ammonia, etc.), real-time supply monitoring is improved to prevent water accidents caused by excessive or excessive gas injection.

(4) Remote unmanned control possible

When building a remote unmanned control system according to high reliability conditions, all systems can be accurately controlled remotely.

(5) chemical cost reduction

Drug costs can be reduced by avoiding excessive chemical input and realizing optimal quantitative control.

(6) safety accident prevention

When the hardware is connected to the rear end by securing the accuracy of data supplied in real time, safety accidents can be prevented by improving the ability of emergency response in warning and alarm states and improving reliability.

In addition, gas injection methods generally include pressure injection and vacuum suction, but the gas injection machine equipped with the laser detector of the present invention can be used in combination with any gas injector such as chlorine gas, sulfurous acid gas and ammonia gas by vacuum suction. Self-explanatory to those in this field.

1 is a block diagram showing a path in which gas is mixed with water at the time of gas supply,

2 is a partial cross-sectional view showing a gas injector used in the present invention,

3 is a partially enlarged cross-sectional view showing a state where the injection adapter used in the present invention is mounted;

4 is a flowchart showing a driving state of the present invention.

Explanation of symbols on the main parts of the drawings

1: gas filter 2: gas injector

3: valve driving device 4: ejector

5: automatic control unit 11: upper fixing body

12: lower stationary body 13: gas outlet

14, 24: valve 15: gas inlet

16: lower stopper 17: adapter for injection

18: upper stopper 19: laser

20: light emitting portion 21: light receiving portion

22, 23: intermediate 25: flow meter

30: floating fluid S100: injection amount detection step

S200: Automatic control processing step S300: Valve adjusting step

S6-S9: normal processing step S5: operation step

S11, S12: Output stage

Claims (6)

A flow meter 25 connected between the upper fixture 11 and the intermediate bodies 22 and 23 and having a floating body 30 therein; An injection adapter 17 connected between the lower fixture 12 and the intermediate body 23 and having a magnet filter 31 and a gas filter 32 therein; It is connected to the upper part of the upper fixture 11, consisting of a laser device 19 having a light emitting portion 20 and a light receiving portion 21 is equipped with a laser detector for detecting the position of the floating body 30 Gas injector The method of claim 1, The flow meter 25 having the floating body 30 therein is a gas injector equipped with a laser detector, which is composed of transparent glass or a non-metallic material having high corrosion resistance. The method of claim 1, The injection adapter 17 is a gas injector equipped with a laser detector, characterized in that configured to be assembled and disassembled through the lower stopper 16 of the lower fixing body 12. The method of claim 1, The upper and lower fixing bodies 11 and 13 and the intermediate bodies 22 and 23 connected to the upper and lower fixing bodies 11 and 13 have passages through which gas can flow. Gas injector with laser detector A calculation step (S5) of obtaining an output by calculating an output value of a filter amount and a laser sensor for removing unnecessary signals during laser driving; A normal processing step (S6-S9) for operating the value obtained in the calculating step (S5) within the scale value range of the flow meter 25, In the processing step (S6-S9), the laser detector, characterized in that using the injection amount detection step (S100) consisting of the output step (S11, S12) to calculate and output the value when the output of the scale range of the flow meter Control method of installed gas injector The method of claim 5, The normal processing step includes the step S6 of determining whether the float is within the lower measurement range of the flow meter, the step S7 of determining whether the float is within the upper measurement range of the flow meter, and the steps S6 and S7. Outside of the range of Eq.), There are steps (S8) and (S9) for outputting a forcible signal, and the laser detector is characterized in that the process proceeds to a signal operation step (S10) upon application of the output within the measurement range of the float. Control method of gas injector.