Ethylene oxide device online analyzer maintenance safety management system and control method thereof

Abstract

The invention provides an ethylene oxide device online analyzer maintenance safety management system, which relates to the technical field of equipment maintenance information management, and is characterized in that the system comprises a DCS control system and an on-site management control system, the DCS control system is composed of a plurality of groups of signal detection, transmission and sensors, and is arranged at the state identification position of corresponding equipment, and the on-site management control system is connected with the DCS control system. Remote information identification and control are carried out through light signals and control buttons, and the on-site management control system independently gathers and collects operation state information of all the devices and carries out state judgment and control according to the light information and the buttons; the DCS control system and the field management control system judge and identify the state of the equipment in real time through wireless signal transmission, and control the operation of the corresponding equipment under bidirectional information confirmation, so that the safety management effect is improved. The system has the advantages that the whole set of maintenance work of the equipment can be fully supervised and remotely and safely controlled, the data after maintenance is analyzed and processed, and the overall stability and maintenance effect are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of equipment maintenance information management, in particular to an ethylene oxide device online analyzer maintenance safety management system and a control method thereof. BACKGROUND

[0002] The ethylene oxide device is an important chemical production facility, which is mainly used for producing ethylene oxide and its derivatives. In the production process, flammable, explosive and toxic materials are used, so the related device needs to be matched with a corresponding safety maintenance system to ensure the safe and stable operation of the entire device. However, the existing ethylene oxide online analyzer maintenance interlocking is too complex, which causes the device operator to easily misoperate when releasing the interlocking for maintenance, resulting in a large loss of unplanned device shutdown. At the same time, there is no effective information data exchange between the maintenance department and the maintenance department, which causes inaccurate analysis of the analyzer and leads to safety accidents. The whole system lacks plan tracking, and the overall operation stability is poor, so it cannot meet the existing use requirements. SUMMARY

[0003] The purpose of the present application is to provide an ethylene oxide device online analyzer maintenance safety management system and a control method thereof, which solves the technical problems of the prior art that the maintenance analysis data cannot be fully tracked, and the stability of the whole maintenance management system is poor, and achieves the technical effect of implementing synchronous maintenance and analysis data, and improving the stability of the whole system.

[0004] In order to achieve the above-mentioned application purpose, the technical scheme adopted by the present application is:

[0005] The ethylene oxide device online analyzer maintenance safety management system comprises a DCS control system and a field management control system. The DCS control system is composed of multiple groups of signal detection, transmission and sensor, and is arranged at the state recognition position of the corresponding device, and has a light signal and a control button for remote information recognition and control. The field management control system is arranged in the corresponding monitoring station, independently collects the running state information of each device, and judges and controls the state according to the light information and the button. The DCS control system and the field management control system judge and recognize the device state in real time through wireless signal transmission, control the running of the corresponding device under the confirmation of bidirectional information, and improve the safety management effect.

[0006] The control method of the ethylene oxide device online analyzer maintenance safety management system comprises the following steps: step 1, pressing the maintenance application button of the device to be maintained, and after the information is confirmed by the DCS control system, the corresponding response light is turned on, and when the maintenance state is recognized, the information is sent to the field management system;

[0007] Step 2, after the field management system in the monitoring station identifies the corresponding signal, the corresponding button light will be always on, and the air switching valve can be controlled to open or close, after completing the opening and closing correction or inspection, the knob can be closed or automatically delayed to close;

[0008] Step 3, after completing the correction and inspection in step 2, the current instrument fault is identified, if the instrument is analyzed and identified without fault, the maintenance closing button is started, the light is extinguished to the DCS system, and the reset instruction information is sent to the corresponding maintenance application button.

[0009] As an improvement, after the DCS control system identifies the maintenance operation and responds to the light, if there is no subsequent operation, it will automatically judge and refuse maintenance after 5 minutes, the maintenance application light is extinguished and the air valve cannot be opened.

[0010] As an improvement, the DCS control system identifies the maintenance operation signal and performs light flickering, and the corresponding instrument equipment is displayed together, and after identifying the maintenance closing signal, the information is transmitted to the field management system in the monitoring station, the current state is judged and the light constant is turned off.

[0011] As an improvement, the air switching valve in step 2 will identify the corresponding control signal, but there is no specific operation, and after 100 seconds of delay, it will automatically control to close, and if the instrument analysis in step 3 cannot close the maintenance button, the corresponding data content will be returned to the monitoring station, and the maintenance application corresponding bit number button will be always on.

[0012] As an improvement, after the air switching valve in step 2 is automatically closed for 100 seconds, the knob will identify the current state, and must be rotated back to the OFF state before the next application is executed.

[0013] The beneficial effects of the present application are: by setting the DCS control system, the current running state of the corresponding equipment can be fully identified and analyzed, and information warning can be performed, the field management system can fully supervise the whole set of equipment in real time, and the safety of the whole system can be further improved by configuring multiple safety automatic closing and correction inspection devices, so as to avoid safety accidents. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The control method and maintenance flowchart of the online analyzer maintenance safety management system of the ethylene oxide device. DETAILED DESCRIPTION

[0015] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of the present application.

[0016] It should be noted that the terms "first", "second" in the present application are only used for description purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0017] As shown in the ethylene oxide device online analyzer maintenance safety management system, the DCS control system is composed of multiple groups of signal detection, transmission and sensor, is arranged at the state identification position of the corresponding equipment, and has light signals and control buttons for remote information identification and control. Figure 1 The field management control system is arranged in the corresponding monitoring station, independently collects the running state information of each equipment, and judges and controls the state according to the light information and buttons. The DCS control system and the field management control system identify the equipment state in real time through wireless signal transmission, control the running of the corresponding equipment under the confirmation of bidirectional information, and improve the safety management effect. The DCS control system and the field management control system can automatically produce maintenance curves and maintenance plans, and remind the corresponding personnel through the terminal.

[0018] The control method of the ethylene oxide device online analyzer maintenance safety management system comprises the following steps: step 1, the equipment needing maintenance is pressed by the maintenance application button, the DCS control system confirms the information, the corresponding response light is turned on, and the information is sent to the field management system after identifying the maintenance state; step 2, after the field management system in the monitoring station identifies the corresponding signal, the corresponding button light will be always on, and the gas switching valve can be controlled to be opened or closed, and after completing the opening and closing correction or inspection, it can be closed by rotating the knob or automatically delayed; step 3, after completing the correction and inspection in step 2, the current instrument fault is identified, if the analyzer is identified to be fault-free, the maintenance closing button is started, the light of the DCS system is extinguished, and the reset instruction information is sent to the corresponding maintenance application button. After completing all maintenance work, the analyzer calibration record is automatically recorded to generate a deviation curve for comparison, the failure rate and reliability analysis of the related equipment are obtained through the deviation curve statistics, and the specific problem details of the equipment can also be reflected and summarized.

[0019] In step 1, if there is no subsequent operation after the DCS control system identifies the maintenance operation and responds with light, it will automatically judge and refuse maintenance after 5 minutes, the maintenance application light is extinguished, and the gas valve cannot be opened. After the DCS control system identifies the maintenance operation signal and flashes the light, the corresponding instrument equipment is reminded and displayed, and after identifying the maintenance closing signal, the information is transmitted to the field management system in the monitoring station, the current state is judged, and the light is turned off. In step 2, the gas switching valve will identify the corresponding control signal, but after no specific operation, it will automatically control to close after 100 seconds, and in step 3, if the analyzer analyzes that the maintenance button cannot be closed, the corresponding data content will be returned to the monitoring station, and the maintenance application corresponding bit number button will be always on. In step 2, after the gas switching valve is automatically closed after 100 seconds, the knob will identify the current state, and the next application must be executed after rotating back to the OFF state. When in use, all data changes and manual operation contents will be collected and processed, and when maintenance work is performed, the current equipment state information will be summarized every 30 minutes and automatically identified to ensure the normal operation of the maintenance work. After completing the overall repair and maintenance, the corresponding data is uploaded to the report generation module, and the operator can create personalized reports (tables or charts) through the character attributes (state, responsible person, label and date, etc.). The report includes reading failure rate and calibration record curve report, annual failure rate and calibration record curve report, monthly utilization rate report, annual utilization rate report, repair and maintenance calibration record report, and the data report can be exported in CSV, Excel, PDF and other formats.

[0020] When in use, after the operator presses the maintenance application button, the response light starts, the DCS control system displays the maintenance flash, at this time the field management system also receives the corresponding identification signal and displays the corresponding button constant, at this time the maintenance personnel can control the standard gas switching valve, after completing the valve inspection, the control program of the corresponding valve is started, and whether the primary instrument is faulty is identified again. When the maintenance is completed, the detection module returns the current equipment state information, and sends the maintenance application light off command to the two control systems respectively, and the whole maintenance management work can be completed after the verification is completed. In this process, the two systems update the equipment running state in real time, and prompt the corresponding personnel work information.

[0021] The above only describes the preferred embodiment of the patent of the application, and is not used to limit the patent of the application. Any modification, equivalent replacement and improvement made within the spirit and principle of the patent of the application shall be included in the protection scope of the patent of the application.

Claims

1. Ethylene oxide device online analyzer maintenance safety management system, characterized by: It includes a DCS control system and a field management control system. The DCS control system consists of multiple groups of signal detection, transmission and sensors, which are set at the status identification position of the corresponding equipment, and have light signals and control buttons for remote information identification and control. The field management control system will be set at the corresponding monitoring station content, independently summarize and collect the operating status information of each device, and perform status judgment and control based on the light information and buttons. The DCS control system and field management control system judge and identify the device status in real time through wireless signal transmission, and need to control the operation of the corresponding equipment under two-way information confirmation to improve the safety management effect.

2. The control method for the maintenance safety management system of the ethylene oxide device online analyzer according to claim 1, characterized in that: The following steps are involved: Step 1: Press the maintenance application button on the equipment that needs maintenance. After the DCS control system confirms the information, it turns on the corresponding response light. When the maintenance status is identified, the information is sent to the site management system. Step 2: After the on-site management system in the monitoring station recognizes the corresponding signal, the corresponding button light will be always on, and the gas switching valve can be controlled to open or close. After the opening and closing calibration or inspection is completed, it can be closed by the knob or automatically delayed closing; After completing the calibration test in step 3 and step 2, the current instrument fault will be identified. If the analysis identifies that the instrument has no fault, the maintenance close button will be activated, and the DCS system will be requested to turn off the light. At the same time, the reset instruction information will be sent to the corresponding maintenance request button.

3. The control method for the maintenance safety management system of the ethylene oxide device online analyzer according to claim 2, characterized in that: In step 1, if there is no subsequent operation after the DCS control system recognizes the maintenance operation and responds with a light, it will automatically determine that the maintenance is rejected after 5 minutes, the maintenance request light will go out and the gas valve will remain unable to open.

4. The control method for the maintenance safety management system of an ethylene oxide device online analyzer according to claim 3, characterized in that: The DCS control system recognizes the maintenance operation signal and flashes the lights, which will then display the corresponding instruments and equipment as a reminder. After recognizing the maintenance shutdown signal, it will transmit the information to the on-site management system of the monitoring station, determine the current status and turn off the lights.

5. The control method for the maintenance safety management system of the ethylene oxide device online analyzer according to claim 2, characterized in that: In step 2, the gas switching valve will recognize the corresponding control signal, but without any specific operation, it will automatically close after a delay of 100 seconds. In step 3, if the instrument analysis shows that the maintenance button cannot be closed, the corresponding data content will be transmitted back to the monitoring station to keep the button with the corresponding position number of the maintenance application always on.

6. The control method for the maintenance safety management system of the ethylene oxide device online analyzer according to claim 5, characterized in that: In step 2, after the gas switching valve is automatically closed after a delay of 100 seconds, the knob will recognize the current state and must be turned back to the OFF state before the next application can be executed.

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