KR20150037775A - A High-speed Fluid Filling System Using Electronic Flowmeter - Google Patents

Abstract

The present invention relates to a high-speed fluid filling system using an electronic flowmeter. According to the present invention, the high-speed fluid filling system using the electronic flowmeter comprises: a main PLC installed on a fastener; a slave PLC installed on a rotator which rotates around the fixture, performing operation control to a plurality of filling valves installed on the rotator by exchanging a control signal with the main PLC, and having at least one of a plurality of channel high-speed counters; and the electronic flowmeter detecting flow of a fluid filled by the filling valve, generating corresponded pulse count, and transmitting the same to the high speed counter of the slave PLC.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a high-speed fluid filling system using an electronic flow meter,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid filling system, and more particularly, to a high-speed fluid filling system using an electronic flow meter capable of high-speed metering filling by electronic control using a pulse type electromagnetic flow meter.

In the case of using the conventional rotary carbonated beverage filling by a mechanical method, as shown in FIG. 1, the filling valve is opened by upward movement of the filling container under the same pressure condition of the filling container and the bowl, The carbonic acid gas in the filling container is discharged to the ball along the pipe inside the filling valve, and when the filling container liquid reaches the filling valve, the carbonic acid gas can not escape any more, so that the liquid filling And is terminated. In such a mechanical filling method, seals and the like of the valve are worn out in proportion to the use time, errors in filling accuracy and repetition accuracy of the filling may occur, and there is a problem that leak of the liquid is liable to occur.

In addition, when filling carbonated beverages, it is necessary to cool the liquid to stabilize the liquid and to fill the liquid easily. However, in order to fill the cold, the refrigerator must be turned and consumed a lot of energy. When the cold filling is performed, The dew is formed. In this case, since consumer claim can occur due to fungi propagation during the distribution process, it is necessary to perform the dew condensation preventing process again, which increases energy consumption.

On the other hand, the cost of packaging materials in the beverage market has been decreasing. As a result, the cost of raw materials for PET bottles has been rising. However, the weight of PET bottles that are light-weighted can not be accurately filled with mechanical filling machines that meet the existing filling level due to the high degree of expansion of bottles at high pressure (about 3.4 Kg / cm ² G or more) In order to comply with this, more than the reference amount is included, which results in a decrease in yield and causes a cost increase of the producer.

For example, in order to fill at a normal temperature by a mechanical filling method, the PET container is filled with a high pressure. However, even if the filling level is the same during the filling process, Is changed from the expanded state to the original state, and the respective filling level becomes different.

As a result of the above problems, advanced filling technology using an electronic flow meter (FLOW METER) that enables high-speed and constant filling regardless of the degree of expansion of the bottle at high temperature and high pressure was developed. However, since the controller of the filling machine is manufactured with a dedicated control board and the exposure of the technology is prevented, it is difficult to develop the improvement technology. Therefore, it is required to develop the unique technology using the high-speed flow meter.

An object of the present invention is to realize an electronic fluid filling system capable of high-speed small-quantity precise filling by a multi-filling valve in electronic control by adopting a pulse type electromagnetic flow meter.

Another object of the present invention is to realize an electronic fluid filling system capable of high-speed precise filling of carbonated beverage in a PET container which is light in weight at a high temperature and a high pressure by adopting a pulse type electromagnetic flow meter by electronic control.

According to an aspect of the present invention, there is provided a high-speed fluid filling system using an electronic flow meter, comprising: a main PLC (Main Programmable Logic Controller; And a control unit which is installed in a rotating body rotating with respect to the fixed body, exchanges control signals with the main PLC, performs operation control on a plurality of filling valves installed in the rotating body, A PLC (Slave Programmable Logic Controller, hereinafter the same); And an electronic flow meter for detecting the flow rate of the fluid filled by each of the filling valves and generating corresponding pulse counts and transmitting the pulse counts to the high-speed counter of the slave PLC.

Each of the filling valves includes a liquid valve, a sniff valve, and a counter pressure valve.

The high-speed counter has at least four channels.

The high-speed counter has at least eight channels.

And the main PLC and the slave PLC are connected by a slip ring to perform communication.

The filling valve may further include a filling rate control valve.

The electronic flow meter is characterized by having a maximum resolution of 5 ms to 0.001 ms.

And the input response time of the high-speed counter is 0.001 ms to 1 ms.

According to the present invention, it is possible to constitute a filling system capable of high-speed quantitative filling such as carbonated beverage by using the electronic flow meter according to the present invention. Even when the filling container is made of PET or the like, Precision filling can be carried out, so it can meet the quality standard. It can reduce the cost of the producer by proper filling and can meet the constant quality standard and improve the customer satisfaction.

The electronic flowmeter of the present embodiment enables a high-speed and small-quantity filling by a plurality of filling valves while reducing the cost by using a low-cost electronic flowmeter which generates the pulse counting result and transmits it to the PLC.

In addition, since the pulse type electronic flow meter is used and the high-speed counter is used for high-speed counting, it is possible to prevent a filling error due to a communication delay that may occur in an expensive communication type electronic flow meter.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a flow diagram illustrating a filling process by a conventional mechanical filling system.
2 is a schematic diagram illustrating a high speed fluid filling system using an electronic flow meter of an embodiment of the present invention.
3 is a control block diagram of a high-speed fluid filling system using an electronic flowmeter of an embodiment of the present invention.
4 is a schematic diagram illustrating a configuration of a main part of a high-speed fluid filling system using an electronic flowmeter according to an embodiment of the present invention.
5 is a schematic diagram illustrating a process of fluid filling performed by a high speed fluid filling system using an electronic flow meter of an embodiment of the present invention;
6 is a schematic diagram illustrating fluid filling accuracy by a high speed fluid filling system using an electronic flow meter of an embodiment of the present invention.
7 is a flow chart illustrating the process of fluid filling performed by a high speed fluid filling system using an electronic flow meter of an embodiment of the present invention.

Hereinafter, the structure of a rotary high-speed fluid filling system using the electromagnetic flowmeter according to the present invention will be described in detail with reference to the accompanying drawings.

2 and 3, a rotary high-speed fluid filling system using an electronic flow meter according to an embodiment of the present invention includes a fixed body including a main programmable logic controller (hereinafter referred to as a "PLC") 100, And a rotating body 200 that sequentially performs filling of a plurality of filling containers 202 supplied downward and includes a ball 201 and a plurality of filling valves 210.

The rotary high-speed fluid filling system according to an embodiment of the present invention is characterized in that 60 filling valves 210 filling the 500 ml carbonated beverage 205 are provided in the rotating body 200, and each filling valve 210 is filled with about 150 ml / sec The present invention can be applied to a high-speed carbonated beverage filling system filling various capacities such as 200 ml, 350 ml and 1.5 L, The present invention can be applied not only to the carbonated beverage 205 but also to various filling solutions or filling fluids, and is not limited to the above embodiments.

The rotary type high-speed fluid filling system using the electromagnetic flowmeter of the present embodiment includes a slave PLC (Same Programmable Logic Controller) 250 installed in the rotating body 200, A slave PLC 250 having at least one multi-channel high-speed counter 251 for controlling the operation of each of the plurality of filling valves 210, And an electronic flow meter 230 for detecting a flow rate and generating a corresponding pulse count to transmit to the high speed counter 251 of the slave PLC 250.

The main PLC 100 of this embodiment controls the entire filling system and controls each slave PLC 250.

The slave PLC 250 of the present embodiment controls the filling operation of the filling valve 210 under the control of the main PLC 100. The slave PLC 250 of the present embodiment is controlled by the slip ring 280, Two PLCs 250 are installed at intervals of 180 degrees in order to distribute the problem of wiring and the signal processing load because the control signal is exchanged with the slave PLC 100 (250). However, the present invention is not limited to this, The number of installations and the structure and condition of installation are subject to change.

Meanwhile, the filling operation by the filling system of the present embodiment includes a counter pressure process for opening the solenoid of the counter pressure valve 217 to make the pressure of the ball 201 and the pressure of the filling container 202 equal to each other, A liquid filling process for controlling the solenoid of the liquid valve 211 to recover the carbonic acid gas in the filling container 202 to the ball 201 to perform the liquid filling when the same pressure is secured by the process; And a sniffing step of removing the pressure of the container 202 so as to be at the same pressure as the ambient pressure, and the slave PLC 250 performs on / off control for each process.

 The slave PLC 250 of the present embodiment includes a high-speed counter 251 for receiving measurement information from the electronic flow meters 250 for measuring the flow rates of the respective flow valves, Communication means 258 for transmitting and receiving a control signal to and from the main PLC 100 and a drive control unit 252 for controlling the drive of each fill valve 210. [

In the case of the fluid filling system of this embodiment, for example, when the filling capacity of 500 ml is filled by 150 ml / sec, the filling capacity error for good filling is given by ± 3 ml. In this case, when the passage time of 2 ml is calculated, the allowable time of the motion deviation is 13.3 ms (= 0.013 second), so the response time of the electronic flow meter 230 should be within the allowable time of the motion deviation.

For example, the Korea Food & Drug Administration Notice No. 2011-67 is as follows. The KFDA permits a filling error of 3% with respect to the target amount of 500 ml, but in this embodiment, Assuming a quality of error range of 3ml, the quality standards of the other embodiments may be different.

Applicable classification Display Tolerance



weight 5g or more and 50g or less
50g or more and 100g or less
100g or more and 200g or less
200g or more and 300g or less
300g or more and 500g or less
500g to 1kg or less
1kg to 10kg or less
More than 10kg and less than 15kg
Greater than 15 kg 9%
4.5%
4.5%
9g
3%
15g
1.5%
150g
One%



Volume



5ml or more and 50ml or less
More than 50ml and less than 100ml
More than 100ml and less than 200ml
More than 200ml and less than 300ml
More than 300ml and less than 500ml
Over 500ml and less than 1L
Less than 1L and less than 10L
10L or more and 15L or less
More than 15L 9%
4.5ml
4.5%
9ml
3%
15ml
1.5%
150ml
One%

 [Korea Food and Drug Administration Notice No. 2011-67]

The electromagnetic flowmeter 230 of the present embodiment uses a maximum output pulse number of 10 kHz and a pulse on-off period of 0.1 ms. However, the present invention is not limited to this, and it is possible to provide an appropriate number of times For example, an on-off period of 5 ms to 0.1 ms or less than 0.1 ms, may be applied to the electronic flow meter 230.

The high-speed counter 251 of the embodiment of the present invention counts the pulse signals inputted from the electromagnetic flowmeter 230 installed in each filling valve 210 and inputs the counted pulse signals to the driving control unit 252. The high-speed counter 251 of the present embodiment has a capability of performing an appropriate calculation for the input pulse count of the electronic flow meter 230, and is configured to be capable of inputting eight channels. The input of eight electronic flow meters Can be processed.

Therefore, in case of using a conventional PLC I / O card, 30 PLC I / O cards may be requested to process input of 60 peripheral devices. However, when the high speed counter 251 of this embodiment is used, The eight high-speed counters 251 can calculate the pulse output of the electronic flow meter 230 for each of the six fill valves 210. [ That is, since two slave PLCs 250 are used, four high-speed counters 251 may be provided for each of the slave PLCs 250. Depending on the number of installed slaves 250 and the status of the slave PLCs 250, The installation of the connector 251 may be changed.

That is, although the high-speed counter 251 of this embodiment uses eight channels, it is not limited thereto. If the resolution of the electronic flow meter 230 can be fully exploited, the number of channels may be smaller or larger can do.

For example, it is also possible that one high-speed counter 251 has dozens of channels and calculates and outputs the pulse input of the corresponding number of electromagnetic flow meters 230. In this case, the slave PLC 250 is composed of one So that the configuration of the rotatable control box becomes efficient, and the size of the panel can be reduced, thereby providing economical efficiency.

For example, a PLC I / O card with an input response time of 1 ms can count 3 pulses per 1 ml, but it is difficult to use because an error of 6 ml of program delay occurs.

For example, when the high-speed counter 251 having the input response time of 1 ms is used in the slave PLC 250, since the input response time is 1 ms, the response time is doubled based on the ON and OFF pulses and 2 ms is the response time. For a target volume of 500 ml, 3 pulses per ml can be input from an electronic flow meter, and resolution for 1 ml is limited to 3 pulses.

On the other hand, since the slave PLC 250 of the present embodiment applies the 8-channel high-speed counter 251 having the input response time of 0.002 ms, the response time is doubled based on the on-off pulse, and the response time is 0.004 ms. 500 ml, it is possible to process 300 or more pulses per 1 ml in each electronic flow meter 230, and the resolution becomes 300 or more. In this embodiment, since the pulse period of the electromagnetic flowmeter 230 is set to 0.1 ms, calculation can be performed in a range in which a considerable accuracy with respect to the maximum resolution of the electromagnetic flowmeter 230 can be recognized.

The drive control unit 252 of the present embodiment includes a counter pressure valve control means 254 for controlling the counter pressure valve 217, a liquid valve control means 253 for controlling the liquid valve 211, And a sniff valve control means (256) for controlling the sniff valve (213) for the sniffing process to remove the pressure of the filling container. According to an embodiment, in order to improve the accuracy with respect to the fluid filling speed, And a speed control valve 215 for controlling the speed. In this case, the drive control means 252 of the present embodiment is provided with the speed valve control means 255.

In addition, in the present embodiment, each filling valve 210 can perform a valve opening / closing operation by a solenoid operated by an on-off electrical signal.

The following describes a process in which the high-speed filling of carbonated beverage is performed by the rotary high-speed fluid filling system using the electromagnetic flowmeter of the embodiment of the present invention having the above-described configuration.

The filling valve 210 setting and deviation correction are performed prior to the filling operation (operation 300).

When the filling container 202 is supplied to the filling system 202 under the control of the main PLC 100, the filling container lifting means 270 operates by the control of the slave PLC 250 to raise the filling container 202, The inlet of the filling container 202 is closely adhered to the lower end of the valve 210 to maintain airtightness.

The solenoid of the counter pressure valve 217 is opened by the control of the slave PLC 250 of the present embodiment and the carbon dioxide gas is supplied to the filling container to increase the pressure and the pressure of the ball 201 and the pressure of the filling container 202 The counter pressure process is performed until the same pressure is reached (Step 301).

The slave PLC 250 of the present embodiment assumes that the pressure of the filling container 202 is equal to the pressure of the ball 201 when the time set in the system has elapsed and the liquid The solenoid of the valve 211 is opened (operation 302 and operation 303).

When the liquid filling is started, the electronic flow meter 230 of the filling valve 210 detects the flow rate at a set time interval, and outputs the pulse at a set flow rate interval to the slave PLC 250. In this embodiment, the electronic flow meter 230 is configured to generate a predetermined number of pulses per unit volume to generate a pulse of 10 pulses per milliliter (i.e., pulses of 0.1 millimeter intervals) on or off, But the present invention is not limited thereto and various changes may be made according to the embodiment.

The high-speed counter 251 of the slave PLC 250 receives and counts the pulses corresponding to the flow rates from the corresponding electromagnetic flowmeters 230 through the respective channels and inputs them to the drive control unit 252. The drive control unit 252, (For example, 70% to 90% of the target amount) of the target filling amount of the filling valve 210 (for example, the solenoid of the filling rate control valve 215 is operated to lower the filling rate) (Steps 305 and 307).

When the pulse generated by the electromagnetic flowmeter 230 reaches the target filling amount, the drive control unit 252, that is, the liquid valve control means 253 controls the liquid valve 211, And the speed valve control means 255 cuts off the filling speed control valve 215 (Steps 308, 309, 310 and 302).

When a predetermined waiting time for shutting off the liquid valve 211 has elapsed, the sniffing valve control means 256 operates the solenoid of the sniffing valve 213 so that the carbonic acid gas of the filling container 202, And then discharged to the atmosphere through the valve 213 (operation 312 and operation 313).

When the setting time for the sniffing process is ended and the pressure of the filling container 202 becomes equal to the surrounding pressure, the filling container up-and-down moving means 270 operates by the control of the slave PLC 250, The filling container 202 which has been filled is moved to the outside and the filling container 202 for filling the next filling is supplied to the lower part of the filling valve 210 (steps 315 and 316 Step 317).

It is obvious that the scope of the present invention is not limited to the above embodiments but is defined by the matters set forth in the claims and includes various modifications and alterations made by those skilled in the art within the scope of the claims.

100 ...... main PLC 200 ...... rotating body
201 ...... BOWL 202 ...... filling container
205 ...... Carbon dioxide 210 ...... Filling valve
211 ...... liquid valve 213 ...... snif valve
215 ...... Filling speed control valve 217 ...... Counter pressure valve
230 ...... Electronic flow meter 250 ...... Slave PLC
251 ...... High-speed counter 252 ...... Drive control unit
270 ...... Filling container moving means 280 ...... Slip ring

Claims (8)

A main PLC installed in the fixture;
And a control unit which is installed in a rotating body rotating with respect to the fixed body, exchanges control signals with the main PLC, performs operation control on a plurality of filling valves installed in the rotating body, A PLC;
And an electronic flow meter for detecting the flow rate of the fluid filled by each of the filling valves and generating a corresponding pulse count to transmit to the high-speed counter of the slave PLC. .
The high-speed fluid filling system as claimed in claim 1, wherein each of the filling valves includes a liquid valve, a sniff valve, and a counter pressure valve.
The high-speed fluid filling system as claimed in claim 1, wherein the high-speed counter has at least four channels.
The high-speed fluid filling system as claimed in claim 1, wherein the high-speed counter has at least eight channels.
The high-speed fluid filling system of claim 1, wherein the main PLC and the slave PLC are connected by a slip ring to perform communication.
The high-speed fluid filling system of claim 1, wherein the filling valve further comprises a filling rate control valve.
The high-speed fluid filling system of claim 1, wherein the electronic flow meter has a maximum resolution of 5 ms to 0.001 ms.
The high-speed fluid filling system as claimed in claim 1, wherein the input response time of the high-speed counter is 0.001 ms to 1 ms.

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