A remote monitoring system for sulfur dioxide transmission

Abstract

The present application provides a remote monitoring system for sulfur dioxide transmission, comprising a DCS control system, an input pipeline, an output pipeline, a monitoring branch connected between the input pipeline and the output pipeline, and multiple transmission branches, wherein the transmission branches are connected in parallel, and the monitoring branch is connected in parallel with the transmission branches; pressure transmitters and flow transmitters are sequentially arranged on the monitoring branches near and far from the input pipeline, and the pressure transmitters and flow transmitters are connected to the DCS control system signals; the DCS control system is configured to receive signal data from the pressure transmitters and flow transmitters and display the signal data. The beneficial effect of the present application is that by arranging pressure transmitters and flow transmitters on the monitoring branches and sending the signal data to the remote DCS control system, remote monitoring of the sulfur dioxide transmission site can be achieved, thereby increasing the accuracy of monitoring, eliminating manual inspections, saving labor costs, and reducing health hazards to workers.

Description

Technical Field

[0001] The present disclosure relates to the technical field of sulfur dioxide transmission in float glass production, and in particular to a remote monitoring system for sulfur dioxide transmission. Background Art

[0002] Sulfur dioxide is an important gas used in float glass production and plays an important role in protecting the quality of the bottom of the glass plate. The sulfur dioxide used in the float glass production process needs to be vaporized in liquid form before entering the slag box. Liquid sulfur dioxide needs to absorb a large amount of heat when vaporizing. When the ambient temperature is low in winter, sulfur dioxide is not fully vaporized. Once the inspection is not careful, the pressure and flow rate will be too low, which will affect the quality of the bottom of the glass plate.

[0003] In the existing technology, on-site operators need to inspect the pressure and flow in the sulfur dioxide transmission pipeline every two hours. Frequent inspections not only waste a lot of manpower, but also sulfur dioxide is a toxic gas. When personnel enter the sulfur dioxide room for inspection, they will inhale it, which is very harmful to their health. Therefore, remote monitoring of sulfur dioxide transmission is very necessary. Summary of the Invention

[0004] The purpose of this application is to provide a remote monitoring system for sulfur dioxide transmission in order to solve the above problems.

[0005] In the first aspect, the present application provides a remote monitoring system for sulfur dioxide transmission, including a DCS control system, an input pipeline, an output pipeline, a monitoring branch connected between the input pipeline and the output pipeline, and multiple transmission branches, each of the transmission branches is connected in parallel, the monitoring branch is connected in parallel with each of the transmission branches, the two ends of each of the transmission branches are respectively connected to the input pipeline and the output pipeline, and the two ends of the monitoring branch are respectively connected to the input pipeline and the output pipeline; pressure transmitters and flow transmitters are arranged on the monitoring branch in sequence near and far from the input pipeline, and the pressure transmitters and flow transmitters are connected to the DCS control system signals; the DCS control system is configured to receive signal data from the pressure transmitter and the flow transmitter, and display the signal data.

[0006] According to the technical solution provided in the embodiment of the present application, image acquisition modules are respectively provided on the monitoring branch corresponding to the pressure transmitter and the flow transmitter, the image acquisition modules are connected to the DCS control system signal, the image acquisition modules are configured to collect the numerical values ​​of the display screens of the pressure transmitter and the flow transmitter, the DCS control system is configured to receive the numerical values ​​of the display screens collected by the image acquisition modules and display the numerical values ​​of the display screens, and perform difference calculation between the numerical values ​​of the display screens and the signal data.

[0007] According to the technical solution provided in the embodiment of the present application, the monitoring system also includes an audible and visual alarm, which is electrically connected to the DCS control system and is configured to issue an alarm when the difference calculated by the DCS control system exceeds a set allowable error.

[0008] According to the technical solution provided in the embodiment of the present application, the pressure transmitter is configured as a diffused silicon pressure transmitter, and the flow transmitter is configured as a metal tube float flowmeter.

[0009] According to the technical solution provided in the embodiment of the present application, the measurement of the pressure transmitter is -95KPa-60MPa with an accuracy of 0.25%FS; the accuracy of the flow transmitter is 1.5L / h.

[0010] According to the technical solution provided in the embodiment of the present application, a rotor flowmeter is provided on the transmission branch, and stop valves are respectively provided on both sides of the transmission branch corresponding to the rotor flowmeter.

[0011] According to the technical solution provided in the embodiment of the present application, an instrument frame is provided on the dial of the flow transmitter, which is snapped onto the surface of the flow transmitter dial. The instrument frame is provided with an opening corresponding to the numerical pointer of the flow transmitter, and a color indication area is provided on the surface of the instrument frame corresponding to the numerical pointer. The numerical pointer can be rotatably pointed to the corresponding position of the color indication area, and the color indication area includes a blue low flow indication area, a green normal flow indication area, and a red high flow indication area.

[0012] Beneficial effects of the present invention: The present application provides a remote monitoring system for sulfur dioxide transmission, comprising a DCS control system, an input pipeline, an output pipeline, a monitoring branch connected between the input pipeline and the output pipeline, and multiple transmission branches, wherein the transmission branches are connected in parallel, the monitoring branch is connected in parallel with the transmission branches, the two ends of each transmission branch are respectively connected with the input pipeline and the output pipeline, and the two ends of the monitoring branch are respectively connected with the input pipeline and the output pipeline; pressure transmitters and flow transmitters are sequentially arranged on the monitoring branch near and far from the input pipeline, and the pressure transmitters and flow transmitters are signal-connected to the DCS control system; the DCS control system is configured to receive signal data from the pressure transmitter and the flow transmitter, and display the signal data.

[0013] By installing pressure transmitters and flow transmitters on the monitoring branch and sending the signal data to the remote DCS control system, remote monitoring of the sulfur dioxide transmission site can be achieved, which increases the accuracy of monitoring, eliminates manual inspections, saves labor costs, and reduces health hazards to inspection workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of the first embodiment of the present application;

[0015] Figure 2 This is a structural diagram of the first embodiment of the present application with an image acquisition module and an instrument frame;

[0016] The text labels in the figure are: 100, DCS control system; 200, input pipeline; 300, output pipeline; 410, monitoring branch; 420, transmission branch; 421, rotor flowmeter; 422, stop valve; 500, pressure transmitter; 600, flow transmitter; 700, image acquisition module; 810, blue flow indication area; 820, green normal flow indication area; 830, red high flow indication area. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present application is described in detail below with reference to the accompanying drawings. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present application.

[0018] like Figure 1 The first embodiment of the present application is shown as a schematic diagram, comprising a DCS control system 100, an input pipeline 200, an output pipeline 300, a monitoring branch 410 connected between the input pipeline 200 and the output pipeline 300, and a plurality of transmission branches 420, each of which is connected in parallel. The monitoring branch 410 is connected in parallel with each of the transmission branches 420, and both ends of each of the transmission branches 420 are connected to the input pipeline 200 and the output pipeline 300, respectively. The two ends of the monitoring branch 410 are respectively connected to the input pipeline 200 and the output pipeline 300; a pressure transmitter 500 and a flow transmitter 600 are arranged on the monitoring branch 410 from near to far away from the input pipeline 200, and the pressure transmitter 500 and the flow transmitter 600 are connected to the DCS control system 100 for signal connection; the DCS control system 100 is configured to receive signal data from the pressure transmitter 500 and the flow transmitter 600 and display the signal data.

[0019] In this embodiment, the pressure transmitter 500 is a diffused silicon pressure transmitter, and the flow transmitter 600 is a metal tube float flowmeter. Both the pressure transmitter 500 and the flow transmitter 600 used in this embodiment are corrosion-resistant transmitters specifically designed for sulfur dioxide. The pressure transmitter 500 measures -95 kPa to 60 MPa with an accuracy of 0.25% FS; the flow transmitter 600 has an accuracy of 1.5 L / h.

[0020] In this embodiment, monitoring branch 410 and transmission branch 420 are connected in parallel to transmit sulfur dioxide from input pipeline 200 to output pipeline 300. The flow rate of sulfur dioxide transmitted from monitoring branch 410 is controlled to be consistent with the flow rate of sulfur dioxide transmitted from transmission branch 420. In monitoring branch 410, sulfur dioxide flowing out of input pipeline 200 first passes through pressure transmitter 500, which measures the pressure of the sulfur dioxide in monitoring branch 410 and transmits the signal data to DCS control system 100. Next, the sulfur dioxide passes through flow transmitter 600, which measures the flow rate of the sulfur dioxide in monitoring branch 410 and transmits the signal data to DCS control system 100. After receiving these two signal data, DCS control system 100 compares them with preset pressure and flow values ​​in the system. If the actual value measured is lower than the preset lower limit or higher than the preset upper limit, DCS control system 100 will issue an alarm. The upper and lower limits of the preset values ​​can be adjusted according to actual needs.

[0021] Remote monitoring through the DCS control system 100 replaces manual on-site inspections, which not only improves the accuracy of sulfur dioxide transmission monitoring, but also saves labor costs and reduces health damage to inspection workers.

[0022] In this embodiment, a rotor flowmeter 421 is provided on the transmission branch 420 , and stop valves 422 are provided on both sides of the transmission branch 420 corresponding to the rotor flowmeter 421 . The rotor flowmeter 421 is used to measure the flow rate of sulfur dioxide transmitted in the transmission branch 420 .

[0023] In a preferred embodiment, Figure 2 As shown, the dial of the flow transmitter 600 is provided with an instrument frame that snaps onto the surface of the dial of the flow transmitter 600. The instrument frame has an opening corresponding to the numerical pointer of the flow transmitter 600. A colored indicator area is provided on the surface of the instrument frame corresponding to the numerical pointer. The numerical pointer can rotate to point to a corresponding position of the colored indicator area. The colored indicator area includes a blue low flow indicator area 810, a green normal flow indicator area 820, and a red high flow indicator area 830. In this preferred embodiment, the colored indicator area is provided on the pointer dial of the metal tube float flowmeter to facilitate remote operators of the DCS control system 100 to quickly identify whether the sulfur dioxide flow in the monitoring pipeline is normal from the image of the flow transmitter 600 captured by the image acquisition module 700. When the flowmeter pointer points to the blue indicator area, it indicates that the sulfur dioxide flow is too low; when the flowmeter pointer points to the green indicator area, it indicates that the sulfur dioxide flow is normal; when the flowmeter pointer points to the red indicator area, it indicates that the sulfur dioxide flow is too high.

[0024] In a preferred embodiment, if Figure 2 As shown, image acquisition modules 700 are respectively provided on the monitoring branch 410 corresponding to the pressure transmitter 500 and the flow transmitter 600. The image acquisition modules 700 are signal-connected to the DCS control system 100. The image acquisition modules 700 are configured to acquire the values ​​on the display screens of the pressure transmitter 500 and the flow transmitter 600. The DCS control system 100 is configured to receive the values ​​on the display screens acquired by the image acquisition modules 700, display the values ​​on the display screens, and perform difference calculation between the values ​​on the display screens and the signal data.

[0025] In this preferred embodiment, an image acquisition module 700 is installed next to the pressure transmitter 500 and the flow transmitter 600. This module reads the transmitter screen and sends the captured image to the DCS control system 100. The DCS control system 100 then identifies the image data, compares it with the data sent by the transmitter, and calculates the difference between the two. Acquiring transmitter data in two ways increases transmitter monitoring accuracy. When the difference between the two exceeds the set tolerance, it indicates an error or fault in the transmitter, prompting personnel to inspect or calibrate the transmitter.

[0026] Preferably, in the above preferred embodiment, the monitoring system further includes an audible and visual alarm, which is electrically connected to the DCS control system 100 and configured to issue an alarm when the difference calculated by the DCS control system 100 exceeds a set allowable error.

[0027] This article uses specific examples to illustrate the principles and implementation methods of this application. The above examples are only used to help understand the method and core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of this application, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the application to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A sulfur dioxide transmission remote monitoring system, characterized in that: It includes a DCS control system, an input pipeline, an output pipeline, a monitoring branch connected between the input pipeline and the output pipeline, and multiple transmission branches, wherein the transmission branches are connected in parallel, the monitoring branch is connected in parallel with the transmission branches, the two ends of each transmission branch are respectively connected to the input pipeline and the output pipeline, and the two ends of the monitoring branch are respectively connected to the input pipeline and the output pipeline; The monitoring branch is provided with a pressure transmitter and a flow transmitter in sequence near and far from the input pipeline, and the pressure transmitter and the flow transmitter are connected to the DCS control system by signal; the DCS control system is configured to receive signal data from the pressure transmitter and the flow transmitter and display the signal data; An image acquisition module is respectively provided on the monitoring branch corresponding to the pressure transmitter and the flow transmitter. The image acquisition module is connected to the DCS control system signal. The image acquisition module is configured to acquire the numerical value of the display screen of the pressure transmitter and the flow transmitter. The DCS control system is configured to receive the numerical value of the display screen acquired by the image acquisition module and display the numerical value of the display screen, and perform a difference calculation between the numerical value of the display screen and the signal data; an image acquisition module is provided next to the pressure transmitter and the flow transmitter. The image acquisition module reads the screen of the transmitter and sends the acquired image to the DCS control system. The DCS control system will identify the image data and compare it with the data sent by the transmitter to perform a difference calculation between the two.

2. The sulfur dioxide transmission remote monitoring system according to claim 1, characterized in that: The monitoring system further comprises an audible and visual alarm, which is electrically connected to the DCS control system and configured to sound an alarm when the difference calculated by the DCS control system exceeds a set allowable error.

3. The sulfur dioxide transmission remote monitoring system according to claim 1, characterized in that: The pressure transmitter is configured as a diffused silicon pressure transmitter, and the flow transmitter is configured as a metal tube float flowmeter.

4. The sulfur dioxide transmission remote monitoring system according to claim 1, characterized in that: The pressure transmitter measures -95KPa-60MPa with an accuracy of 0.25%FS; the flow transmitter has an accuracy of 1.5L / h.

5. The sulfur dioxide transmission remote monitoring system according to claim 1, characterized in that: A rotor flowmeter is provided on the transmission branch, and stop valves are respectively provided on both sides of the transmission branch corresponding to the rotor flowmeter.

6. The sulfur dioxide transmission remote monitoring system according to claim 2, characterized in that: The dial of the flow transmitter is provided with an instrument frame which is snapped onto the surface of the flow transmitter dial. The instrument frame is provided with an opening corresponding to the numerical pointer of the flow transmitter. A color indication area is provided on the surface of the instrument frame corresponding to the numerical pointer. The numerical pointer can be rotatably pointed to a corresponding position of the color indication area. The color indication area includes a blue low flow indication area, a green normal flow indication area and a red high flow indication area.

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