Air separation workshop gas monitoring system

Abstract

The utility model provides an air separation workshop gas monitoring system which is characterized in that the air separation workshop gas monitoring system comprises a gas monitoring unit, a communication unit, an alarm unit and a control unit, and the communication unit is connected with the gas monitoring unit and the control unit and used for achieving communication connection between the gas monitoring unit and the control unit; the control unit is connected with the alarm unit and used for controlling the alarm unit to give an alarm. According to the technical scheme, the gas condition of the air separation workshop can be continuously monitored, and an alarm can be given in time, so that potential safety hazards are found and processed in time, and the safety of operators is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of workshop safety monitoring, and is an air separation workshop gas monitoring system. Background Art

[0002] An air separation workshop refers to a workshop dedicated to gas separation and purity improvement. The air separation workshop involves the treatment of gases such as oxygen, nitrogen, plant gas, instrument air, and liquid nitrogen. There are various safety hazards during the treatment of these gases. For example, nitrogen, as an inert gas, may cause personnel poisoning and asphyxiation if a large amount leaks or the nitrogen concentration in the working environment is too high. In a more serious situation, under specific conditions (such as high pressure, high temperature, mixing with combustibles, etc.), these gases may also trigger explosion accidents.

[0003] Gas leakage has characteristics such as suddenness, concealment, high concentration, strong fluidity, long duration, and great harm, requiring factories to establish an efficient gas monitoring and early warning system. At present, there is no relatively reliable and intuitive system in the factory area that can monitor the gas data of multiple air separation workshops, and the safety of operators during the operation process cannot be well guaranteed. Therefore, it is necessary to propose a new air separation workshop gas monitoring system. Utility Model Content

[0004] The purpose of this utility model is to provide an air separation workshop gas monitoring system, which can continuously monitor the gas conditions in the air separation workshop, give an alarm in time, so as to discover and handle safety hazards in time and ensure the safety of operators.

[0005] This application is realized through the following technical solutions, specifically:

[0006] An air separation workshop gas monitoring system, characterized in that it includes a gas monitoring unit, a communication unit, an alarm unit, and a control unit. The communication unit is connected to the gas monitoring unit and the control unit for realizing the communication connection between the gas monitoring unit and the control unit; the control unit is connected to the alarm unit for controlling the alarm unit to give an alarm; the gas monitoring unit is arranged in the air separation workshop; the alarm unit at least includes a first alarm device installed in the analysis hut, a second alarm device installed in the air separation ammonia ice machine workshop, a third alarm device installed in the compression plant building, and installed in the compression plant building.

[0007] In this solution, alarms are set in different areas of the air separation workshop, and the gas monitoring unit and the control unit are communicatively connected through the communication unit. The control unit is connected to the alarm unit, so that the control unit can timely obtain the continuous monitoring data collected by the gas monitoring unit. In the case of abnormal monitoring data, the control unit timely controls the alarm unit to give an alarm. That is to say, the technical solution of this application can continuously monitor the gas situation in the air separation workshop, give an alarm in time, so as to timely handle potential safety hazards and ensure the safety of operators.

[0008] In order to detect different gases in different areas of the workshop, further, the gas monitoring unit includes an oxygen concentration regional monitor arranged in the compression plant, an ammonia monitor arranged in the air separation ammonia ice machine workshop, and a combustible gas monitor and an oxygen concentration comprehensive monitor arranged in the analysis hut.

[0009] Further, the communication unit is used to obtain the monitoring data uploaded by the gas monitoring unit and transmit the monitoring data to the control unit.

[0010] In order to prevent any gas detection device from malfunctioning and causing abnormal detection, further, at least one oxygen concentration regional monitor, at least one ammonia monitor, at least one combustible gas monitor, and at least one oxygen concentration comprehensive monitor are provided in the gas monitoring unit.

[0011] Further, the control unit is used to obtain the monitoring data transmitted by the communication unit and control the alarm unit to give an alarm when the monitoring data meets the preset conditions.

[0012] Further, the alarm unit includes at least one alarm device, and all the alarm devices are connected to the control unit.

[0013] Further, the alarm device includes at least one of a sound alarm, a flash alarm or an audible and visual alarm.

[0014] Further, the above-mentioned air separation workshop gas monitoring system further includes a display module, and the display module is connected to the control unit through the communication unit.

[0015] Further, the above-mentioned air separation workshop gas monitoring system further includes a fire protection module, and the fire protection module includes at least one fire protection device connected to the control unit.

[0016] The beneficial effects of this application are as follows:

[0017] The gas monitoring system in the air separation workshop of this application includes a gas monitoring unit, a communication unit, an alarm unit, and a control unit. The communication unit is used to communicatively connect the gas monitoring unit and the control unit, and the control unit is connected to the alarm unit. Thus, the control unit can timely obtain the continuous monitoring data collected by the gas monitoring unit. In the case of abnormal monitoring data, the control unit timely controls the alarm unit to give an alarm. That is to say, the technical solution of this application can continuously monitor the gas situation in the air separation workshop by setting alarm devices in different areas of the air separation workshop, and can give an alarm in time, so as to timely handle potential safety hazards and ensure the safety of operators.

[0018] This application realizes the detection of different gases in different areas of the workshop by setting an oxygen concentration regional monitor in the compression workshop, an ammonia monitor in the air separation ammonia ice machine workshop, and a combustible gas monitor and an oxygen concentration comprehensive monitor in the analysis hut, and can give an alarm in time, so as to timely handle potential safety hazards and ensure the safety of operators. Brief Description of the Drawings

[0019] Figure 1 It is the overall framework diagram of the gas monitoring system in the air separation workshop provided by the present utility model;

[0020] Figure 2 It is the schematic diagram of the gas monitoring system in the air separation workshop provided by the present utility model.

[0021] Description of the Reference Numerals in the Drawings:

[0022] 1. Gas monitoring unit; 11. Oxygen concentration regional monitor; 12. Ammonia monitor; 13. Combustible gas monitor; 14. Oxygen concentration comprehensive monitor.

[0023] 2. Communication unit;

[0024] 3. Alarm unit; 31. Alarm device; 32. First alarm device; 33. Second alarm device; 34. Third alarm device; 35. Fourth alarm device;

[0025] 4. Control unit; 41. Gas controller; 42. Server;

[0026] 5. Display module;

[0027] 6. Fire protection module; 61. Fire protection equipment. Detailed Description of the Embodiment

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of this application.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the description and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0030] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments may be included in at least one embodiment of this application. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

[0031] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. The term "plurality" means two or more (including two), and similarly, "multiple groups" means two or more groups (including two groups), and "multiple pieces" means two or more pieces (including two pieces). Embodiment

[0032] As Figure 1 shown, an air separation workshop gas monitoring system includes a gas monitoring unit 1, a communication unit 2, an alarm unit 3, and a control unit 4. The communication unit 2 is connected to the gas monitoring unit 1 and the control unit 4 for realizing the communication connection between the gas monitoring unit 1 and the control unit 4; the control unit 4 is connected to the alarm unit 3 for controlling the alarm unit 3 to give an alarm.

[0033] Specifically, the above gas monitoring unit 1 is used to monitor gases such as O2, N2, NH3, etc. in the air separation workshop, or add or subtract the monitoring of other gases according to specific working conditions. The above communication unit 2 can be connected to the above gas monitoring unit 1 and the control unit 4 through wired communication interfaces such as serial ports, RS485, CAN buses, etc., or can be connected using an industrial-grade wireless communication module to further ensure stable communication between the gas monitoring unit 1 and the control unit 4.

[0034] Specifically, in some embodiments of the present application, the communication unit 2 is used to obtain the monitoring data uploaded by the gas monitoring unit 1 and transmit the monitoring data to the control unit 4. After the control unit 4 receives the monitoring data of the gas in real time through the communication unit 2, it performs data analysis and processing, and then controls the alarm unit 3 to give an alarm according to the processing result to remind the operators to take emergency treatment measures in time.

[0035] In some embodiments, the gas monitoring unit 1 includes at least one gas monitor 11, and the gas monitor 11 is used to obtain at least one of the monitoring data such as gas type, gas concentration, gas monitoring range, gas monitoring accuracy, or monitoring response time. Specifically, the above gas monitor 11 can be set according to the gas type. For example, at least one of an oxygen monitor, a nitrogen monitor, a combustible gas monitor 11, or a toxic gas monitor 11 can be set in the air separation workshop. Due to the characteristics of gas leakage such as suddenness, concealment, high concentration, strong fluidity, and long duration, it is more preferably that in addition to monitoring the gas type and concentration, the gas monitor 11 can monitor the gas monitoring range and gas monitoring accuracy to more effectively avoid the concealment and strong fluidity of gas leakage and help the operators quickly check the location of gas leakage. In working scenarios that require rapid response, such as fire alarms and toxic gas leaks, a fast monitoring response time is of great significance for reducing losses and ensuring personnel safety.

[0036] In some embodiments, the control unit 4 is used to obtain the monitoring data transmitted by the communication unit 2 and control the alarm unit 3 to give an alarm when the monitoring data meets the preset conditions. Specifically, the control unit 4 performs operations such as data reception, data processing, and condition judgment. Among them, the data processing operation includes that the control unit 4 analyzes and preprocesses the received gas monitoring data to obtain data items with reference significance, such as the concentration growth rate of a certain gas in a specific time period, etc., so as to ensure the accuracy and effectiveness of the monitoring data. Exemplarily, when the control unit 4 judges whether the monitoring data meets the preset conditions, the above preset conditions can include the following examples:

[0037] 1 The oxygen concentration is lower than the safety threshold, such as 19.5% vol;

[0038] 2 The oxygen concentration is higher than the safety threshold, such as 23.5% vol;

[0039] 3 The growth rate of the oxygen concentration exceeds a certain value within a short period of time;

[0040] 4 The concentration of combustible gas exceeds the alarm threshold, such as the methane concentration exceeding 5% vol;

[0041] 5 The concentration of toxic gas exceeds the safety limit, such as the hydrogen sulfide concentration exceeding 10 ppm;

[0042] 6 Other custom safety conditions.

[0043] When the monitored data meets the preset conditions, the control unit 4 sends an alarm instruction to the alarm unit 3 to activate the alarm function.

[0044] In some embodiments, the alarm unit 3 includes at least one alarm device 31, and all the alarm devices 31 are connected to the control unit 4. Specifically, in order to more effectively avoid potential safety hazards in the air separation workshop, multiple alarm devices 31 should be installed in the air separation workshop. Exemplarily, the above alarm devices 31 can be installed in the following locations: (1) Near the leakage sources in the air separation workshop, including around pipe joints, valves, pumps, and other equipment that may cause leakage; (2) The downwind of the air flow in the air separation workshop. Since gases usually flow with the air, the alarm devices 31 should be installed in the downwind of the air flow to ensure that the gases flowing with the air can be monitored. This can be determined by considering the ventilation system or natural ventilation in the air separation workshop; (3) Crowded areas. To ensure the safety of personnel, the alarm devices 31 should also be installed in crowded areas, such as control rooms, operation consoles, rest areas, etc. In this way, once a leakage or other dangerous situation occurs, corresponding measures can be taken promptly to protect the safety of operating personnel.

[0045] In some embodiments, the alarm device 31 includes at least one of a sound alarm, a flash alarm, or an audible and visual alarm. Specifically, the control unit 4 controls different types of alarm devices 31 to give alarms according to the operating conditions or the safety level of the operating site, which can help operating personnel effectively identify the on-site situation and facilitate them to promptly discover and handle potential safety hazards.

[0046] In some embodiments, the air separation workshop gas monitoring system further includes a display module 5, and the display module 5 is connected to the control unit 4 through the communication unit 2. The display module 5 is used to display the configuration information of the control unit 4, such as the preset conditions satisfied by the alarm, gas monitoring data, alarm information, alarm records, the location of safety accidents, etc., which is convenient for operating personnel to more clearly analyze the operating conditions of the air separation workshop and perform corresponding configuration operations.

[0047] In some embodiments, the air separation workshop gas monitoring system further includes a fire protection module 6, and the fire protection module 6 includes at least one fire protection device 61 connected to the control unit 4. Preferably, the fire protection device 61 includes a fire extinguisher, a high-power fan, etc. When the control unit 4 controls the alarm device 31 to give an alarm, it can simultaneously control the fire protection device 61 to perform emergency treatment, thereby more effectively ensuring the safety of the operators.

[0048] It can be seen that the air separation workshop gas monitoring system of the embodiments of the present application includes a gas monitoring unit 1, a communication unit 2, an alarm unit 3, and a control unit 4. The communication unit 2 communicatively connects the gas monitoring unit 1 and the control unit 4, and the control unit 4 is connected to the alarm unit 3. Thus, the control unit 4 can timely obtain the continuous monitoring data collected by the gas monitoring unit 1. When the monitoring data is abnormal, the control unit 4 timely controls the alarm unit 3 to give an alarm, enabling continuous monitoring of the gas conditions in the air separation workshop, being able to give an alarm in a timely manner, thereby timely discovering and handling potential safety hazards and ensuring the safety of the operators. Embodiment

[0049] As Figure 2 shown, Figure 2 is an application scenario in the air separation workshop of the above Figure 1 shown embodiment. Specifically, this embodiment includes a gas monitoring unit 1, a communication unit 2, an alarm unit 3, and a control unit 4. The alarm unit 3 includes an alarm device 31 arranged in the main control room, a first alarm device 32 arranged in the analysis hut, a second alarm device 33 arranged in the air separation ammonia ice machine workshop, and a third alarm device 34 and a fourth alarm device 35 arranged inside and outside the compression plant building. The above alarm devices can select different types of alarms according to the actual operation situation, and the present application does not make any restrictions. The gas monitoring unit 1 includes an oxygen concentration regional monitor 11 arranged in the compression plant building, an ammonia monitor 12 arranged in the air separation ammonia ice machine workshop, a combustible gas monitor 13 and an oxygen concentration comprehensive monitor 14 arranged in the analysis hut. The control unit 4 includes a gas controller 41 and a server 42 arranged in the main control room. Specifically, the gas monitors in each of the above plant buildings / workshops transmit the respective gas monitoring data to the control unit 4 through the communication unit 2, and then the control unit 4 analyzes and processes the monitoring data, and then issues an alarm command to the alarm device with potential safety hazards or accidents when the alarm condition is met.

[0050] It can be seen that the air separation workshop gas monitoring system of the embodiments of the present application can continuously monitor the gas conditions in each air separation workshop, give an alarm in a timely manner, facilitate corresponding treatment in a timely manner after gas leakage, thereby reducing potential safety hazards and ensuring the safety of the operators.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gas monitoring system for an air separation plant, characterized in that: include: A gas monitoring unit (1), a communication unit (2), an alarm unit (3) and a control unit (4), wherein the communication unit (2) is connected to the gas monitoring unit (1) and the control unit (4) to realize a communication connection between the gas monitoring unit (1) and the control unit (4); and the control unit (4) is connected to the alarm unit (3) to control the alarm unit (3) to give an alarm. The gas monitoring unit (1) is arranged in an air separation workshop; The alarm unit (3) comprises at least a first alarm device (32) installed in the analysis room, a second alarm device (33) installed in the air separation ammonia ice machine workshop, a third alarm device (34) installed in the compression plant, and a fourth alarm device (35) installed outside the compression plant.

2. The air separation workshop gas monitoring system according to claim 1, characterized in that: The gas monitoring unit (1) comprises an oxygen concentration regional monitor (11) arranged in a compression plant, an ammonia monitor (12) arranged in an air separation ammonia ice machine workshop, and a combustible gas monitor (13) and an oxygen concentration comprehensive monitor (14) arranged in an analysis room.

3. The air separation workshop gas monitoring system according to claim 2, characterized in that: The gas monitoring unit (1) includes at least one regional oxygen concentration monitor (11), at least one ammonia monitor (12), at least one combustible gas monitor (13), and at least one comprehensive oxygen concentration monitor (14).

4. The air separation workshop gas monitoring system according to claim 1, characterized in that: The alarm unit (3) comprises at least one alarm device (31), and each of the alarm devices (31) is connected to the control unit (4).

5. The air separation workshop gas monitoring system according to claim 3, characterized in that: The alarm device (31) comprises at least one of a sound alarm, a flash alarm or an audible and visual alarm.

6. The air separation workshop gas monitoring system according to claim 1, characterized in that: It also comprises a display module (5), wherein the display module (5) is connected to the control unit (4) via the communication unit (2).

7. The air separation workshop gas monitoring system according to claim 1, characterized in that: It also includes a fire-fighting module (6), wherein the fire-fighting module (6) includes at least one fire-fighting device (61) connected to the control unit (4).

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