WO2014059786A1 - Mixed-bed resin in-vitro separating and conveying process intelligent monitoring control device and control method - Google Patents

Abstract

A mixed-bed resin in-vitro separating and conveying process intelligent monitoring control device comprises an image collection unit (1) disposed on a side surface of a resin separation column, a computer intelligent analysis unit (2), a signal conversion unit (3), and a program control system PLC. A signal output end of the image collection unit (1) is connected with an input end of the computer intelligent analysis unit (2), a signal output end of the computer intelligent analysis unit (2) is connected with an input end of the signal conversion unit (3), and an output end of the signal conversion unit (3) is connected with the program control system PLC. Also disclosed is a mixed-bed resin in-vitro separating and conveying process intelligent monitoring control method. A computer intelligent image analysis technology is applied in mixed-bed resin in-vitro separation monitoring and control, so that a separated resin conveying end point is reliably judged, and a resin separating and conveying process is rational.

Description

 Intelligent monitoring and control device and control method for mixed bed resin in vitro separation and transportation process

 The invention belongs to the technical field of water treatment, and particularly relates to an intelligent monitoring and control device and a control method for the in vitro separation and transportation process of a mixed bed resin for power plant condensate polishing.

Background technique

 At present, there is a common problem in the separation of mixed-bed resin in vitro, that is, the amount of male/female resin separated and transported is not easy to accurately control, and the accuracy of a separate separation and delivery is poor, and the common---resin separation system of the resin is used. In a plurality of mixed beds, the difference in resin volume and ratio will increase with the number of separations, and eventually each mixed bed will not operate normally.

Summary of the invention

 SUMMARY OF THE INVENTION The object of the present invention is to provide an intelligent monitoring and controlling device and a control method for the in vitro separation and transportation process of a mixed bed resin which can avoid the disorder of the volume and ratio of the mixed bed resin and ensure the normal operation of the mixed bed.

 In order to achieve the purpose of the description, the monitoring control device of the present invention comprises: an image acquisition unit including an image of a resin separation tower disposed on the side of the resin separation tower, and a signal output end of the image acquisition unit and an input of the computer intelligent analysis unit. Connected to the end, the computer intelligent analysis unit is provided with a resin separation and conveying process image of the resin separation tower, the signal output end of the computer intelligent analysis unit is connected with the input end of the signal conversion unit, and the output end of the signal conversion unit is connected with the program control system PLC, signal processing The unit converts the command signal sent by the computer intelligent separation unit, and sends the converted signal to the program control system PLC o

The image acquisition unit is composed of an imaging device and an image transmission unit. The control method of the present invention is:

 1) First, after the positive separation of the male/female resin, before the delivery operation is performed, the intelligent monitoring control device is turned on, and the static image of the resin separation in the resin separation tower is collected by the image acquisition unit;

 2) In the computer intelligent analysis unit, the "reference line" of the height of the anode/yin resin is set, and the computer intelligent analysis unit receives the image conveyed by the image acquisition unit, and recognizes the interface position of the cathode/yang resin in the current image, if the resin separation interface is not In the current picture, the difference between the image data of the upper and lower mirrors is compared. Through these two analyses, the degree of deviation of the amount of the anode/positive resin from the normal amount, that is, the "reference line" is determined; according to the result, the actual loading amount of the male/female resin is confirmed. And the amount of male/female resin that needs to be transported, and position identification on the computer intelligent analysis unit interface image;

 3) After the static analysis is finished, the calculation intelligent analysis unit displays the appropriate separation and delivery volume of the mixed bed resin, and sends a prompt message to the operator, and the operator conveys the corresponding resin according to the prompt;

4) During the transfer process of the anode/yin resin, the computer intelligent analysis unit dynamically and real-time monitors the image data of the conveyance process, and continuously recognizes the position of the separation interface of the cathode/positive resin from the changed screen, and when the interface position reaches the position of the step identification When it is determined that the resin separation has reached the end point, the stop conveying command signal is immediately issued, and the converted signal is sent to the program control system PLC by the signal processing unit to immediately stop the resin separation and conveyance.

 The invention applies the computer intelligent image analysis technology to the separation and monitoring of the mixed bed resin in vitro, so that the judgment of the resin separation and delivery end point is more reliable, and the resin separation and transportation process is more reasonable. On the one hand, it can avoid the confusion of the volume and proportion of the mixed resin; on the other hand, the volume and ratio of the mixed bed resin which has been confusing can be gradually adjusted during the resin separation process until recovery. In this way, it is very beneficial to maintain the running effect of the mixed bed, and also can improve the automation degree of the separation of the mixed bed resin in vitro and reduce the working intensity of the operating personnel.

DRAWINGS Figure 1 is a schematic view of the overall system of the present invention;

 2 is a monitoring screen diagram of a cone bottom separation system according to Embodiment 1 of the present invention;

 Fig. 3 is a view showing a high-tower monitoring screen of the embodiment 2 of the present invention, wherein: Fig. 3A is a reference line A for resin separation, and Fig. 3B is a reference line B for resin separation.

detailed description

 The invention will be further described in detail below with reference to the accompanying drawings.

 Referring to Fig. 1, the apparatus of the present invention comprises an image acquisition unit ί disposed on the side of the resin separation tower for using the resin separation tower image, and the signal output end of the image acquisition unit 1 is connected to the input end of the computer intelligent analysis unit 2, to the computer intelligence The analyzing unit 2 provides a resin separating and conveying process of the resin separating tower, the signal output end of the image computer intelligent analyzing unit 2 is connected to the input end of the signal converting unit 3, and the output end of the signal converting unit 3 is connected to the program control system PLC, and the signal processing unit 3 The command signal sent by the computer intelligent separating unit 2 is converted, and the converted signal is sent to the program control system PLC. The following two embodiments are specific implementation processes in the two common processes of monitoring and controlling by using the device of the present invention.

 At present, the commonly used mixed bed resin separation tower has two kinds of cone bottom separation towers and high towers. According to different separation tower forms, the application of the above technical schemes is different, and the monitoring implementation methods are different, as follows: Example 1, cone bottom separation Monitoring implementation process

 (1) The back-washing layer of the anode/yin resin in the cone bottom separation tower is completed. Before starting the anode resin output operation, the intelligent monitoring and control device is activated, and the image acquisition unit 1 wirelessly transmits the screen to the computer intelligent intelligent analysis unit 2, the screen It should be as shown in Figure 2.

(2) According to the required ratio of yin and yang resin, set the "reference line as shown by line "A" in the computer intelligent analysis unit - t: 2; start the transfer of the cation resin, click the start analysis image function key , the computer intelligence analysis unit 2 starts dynamic analysis of "line A" and the positive/yin points in the resin image The position of the interface, as the cation transfer process progresses, the interface decreases continuously. When it reaches the "line A" position, the computer intelligence analysis unit 2 issues a command signal correspondingly, and the signal processing unit 3 sends the converted signal to The program control system PLC stops the resin separation and delivery process.

 Embodiment 2, implementation process of high tower separation monitoring

 (1) Monitoring of the high tower separation process requires two image acquisition units 1, a top mirror image acquisition unit 1A, and a lower mirror image acquisition unit 1B. After the high-rise inner Yang/anion resin backwash is successfully layered, the intelligent monitoring control device is turned on, and the image capturing units 1A and IB respectively transmit the current mirror image information to the interface of the computer intelligent analyzing unit 2, as shown in FIG. .

(2) According to the amount of resin in the high tower and the required ratio of yin and yang resin, two reference lines "Reference line A and reference line B" separated by resin are respectively disposed in the upper and lower mirror screens of the computer intelligent analysis unit 2 _: The lines "Line A" and "Line B" are shown.

 (3) Click the Start Analysis Image function button, and the computer intelligent analysis unit starts to analyze the image data to confirm the position of the resin transfer interface:

 (a) If the interface position is higher than the position of "line A", the position of "line B" in the lower mirror image is adjusted accordingly, and the computer intelligent analysis unit sends a prompt message to the operator, requesting the operation program control system to first perform the "transportation yang" Resin "step", during the transportation process, the computer intelligent analysis unit 2 dynamically analyzes the top view mirror image (transmitted by the image acquisition unit 1A). The position of the intermediate/anion resin interface, the interface is continuously - F drops, when it reaches the "line" After the A" position, the computer intelligent analysis unit 2 issues a command signal correspondingly, and the signal processing unit 3 sends the converted signal to the program control system to stop the "positive resin transfer" program.

 (b) If the resin layered interface position is equal to or lower than the position of "Line A", jump directly to step 4.

(4) After performing step (3), or confirm in step (3) that the position of the resin conveying interface is equal to or Below the position of the line A, the computer intelligent analysis unit 2 sends a prompt message to the operator, requesting the operation program control system to first execute the "transporting anion resin" step, and prompting the operator to end the "transporting anion resin" step after the computer The corresponding operation is performed on the intelligent analysis unit to start the separation and transportation of the secondary cation resin.

 (5) Starting the secondary cation separation and transportation, the computer intelligent analysis unit 2 dynamically analyzes the position of the lower mirror image (transmitted by the image acquisition unit 1B) at the position of the yin/yin resin interface, and the interface is continuously conveyed with the cation resin. Gradually, when it reaches the "line B" position, the computer intelligence analysis unit 2 issues a command signal correspondingly, and the signal processing unit 3 sends the converted signal to the program control system to stop the "yang resin transfer" step. At this point, the separation and transport step of the entire cation resin is successfully completed.

 Metering implementations monitored in the above two processes

 (1) In the separation of the cone bottom, according to the design value and the debugging result, the position of the reference line is fixed, and the amount of each resin conveyance is measured as a standard to prevent an error in the amount of resin conveyance each time;

 (2) In the high tower separation, the initial position of the reference lines A and B is set according to the volume and proportion of the male/female resin determined by the commissioning operation. During the resin separation and transportation, the reference line A is fixed, and the reference line B is based on its initial position. The position and the distance of the male/female resin interface from the reference line A after each backwash layer are updated, and the resin conveyance amount is measured by the computer intelligent interface with the scale.

Claims

claims 1. An intelligent monitoring and control device for the in vitro separation and transportation process of mixed-bed resin, characterized by: including an image acquisition unit (1) provided on the side of the resin separation tower for taking images of the resin separation tower, and the image acquisition unit (1) The signal output end is connected to the input end of the computer intelligent analysis unit (2), and provides the resin separation and transportation process image of the resin separation tower to the computer intelligent analysis unit (2). The signal output end of the computer intelligent analysis unit (2) is connected to the signal conversion unit The input end of (3) is connected, the output end of the signal conversion unit (3) is connected to the program control system PLC, the signal processing unit (3) converts the instruction signal sent by the computer intelligent separation unit (2), and converts the converted signal Sent to the program control system PLC. 2. The intelligent monitoring and control device for the in vitro separation and transportation process of mixed-bed resin according to claim 1, characterized in that: the image acquisition unit (1) is composed of a camera device and an image transmission unit. 3. A method for controlling the intelligent monitoring and control device of the mixed-bed resin in vitro separation and transportation process as claimed in claim 1, characterized by: 1) First, after the cation/anion resin is successfully separated and before the transportation operation is executed, the intelligent monitoring and control device is turned on, and the image acquisition unit (1) begins to collect static images of the resin after separation in the resin separation tower; 2) Set the "reference line" for the height of the cation/cation resin in the computer intelligent analysis unit (2). The computer intelligence analysis unit (2) receives the image transmitted by the image acquisition unit (1) and identifies the height of the anion/cation resin in the current image. The position of the interface. If the resin separation interface is not in the current screen, compare the difference in data between the two sight glass images on - F. Through the analysis of these two sections, determine the degree to which the amount of anion/cation resin deviates from the normal amount, that is, the "reference line"; based on this Result measurement, confirm the actual filling amount of cation/anion resin and the amount of cation/anion resin to be transported this time, and mark the location on the computer intelligent analysis unit (2) interface image - t; 3) After the static analysis is completed, the calculation intelligent analysis unit (2) displays the appropriate in vitro separation and delivery volume of the mixed-bed resin, and sends a prompt message to the operator. The operator performs the corresponding resin treatment according to the prompt. convey; convey; 4) During the transportation process of cation/anion resin, the computer intelligent analysis unit (2) dynamically monitors the image data of the transportation process in real time, and continuously identifies the position of the anion/cation resin separation interface from the changing screen. When the interface position reaches the step (2) When the marked position is reached, it is determined that the resin separation has reached the end point, and a stop conveying command signal is immediately sent. The signal processing unit (3) sends the converted signal to the program control system PLC to immediately stop the resin separation and conveying.