Air separation molecular sieve operation monitoring device
By designing a space-dividing molecular sieve operation monitoring device, using temperature detection structure and alarm components, the problem that air-dividing molecular sieve failure cannot be detected early is solved, real-time monitoring of the operating status of the molecular sieve and timely handling of the faults is achieved.
Patent Information
- Application Number
- CN202420477352.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-13
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-03-13
AI Technical Summary
The failure of the air separation molecular sieve cannot be detected early, resulting in the continuous expansion of the fault and cannot be handled, affecting the normal operation and safety performance of the equipment.
A space-dividing molecular sieve operation monitoring device is designed, including a control component, a temperature monitoring component and an alarm component. Monitor the outlet temperature of the molecular sieve regenerated gas through the temperature detection structure, and transmit the temperature data to the control board to monitor the operating status of the molecular sieve in real time, detect faults in a timely manner, and issue reminders through the alarm components.
Real-time monitoring of the operating status of molecular sieve is realized, fault detection can be detected as early as possible, labor intensity of operators can be reduced, faults can be handled in a timely manner, and accidents can be avoided.
Smart Images
Figure CN222784220U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of air separation equipment, and in particular to an air separation molecular sieve operation monitoring device. Background Art
[0002] The molecular sieve system is a key system in the air separation unit, and its main purpose is to remove moisture and carbon dioxide from the air. If the system is operating abnormally and moisture and carbon dioxide enter the cold box, the plate heat exchanger hot end heat exchange temperature difference will be large and the liquid output will be low. In severe cases, the plate heat exchanger will be severely iced up, the main cooling liquid level will continue to drop, and the air separation unit will be unable to maintain operation. After the plate heat exchanger is iced up, it will be difficult to heat and purge, and the local uneven heat and cold will have a great impact on the safety performance of the plate heat exchanger.
[0003] The key parameter for judging whether the molecular sieve is operating normally is the cold blow peak value during the regeneration stage. Its value generally varies between -7°C and 150°C. If it is less than 100°C, it can be considered that the regeneration is not complete, which will affect the adsorption performance of the next cycle.
[0004] The traditional practice is for operators to regularly check temperature trends in the DCS system and report any abnormalities found. However, due to deficiencies in operators' technical capabilities, subjective judgment, and sense of responsibility, faults are often not discovered in the early stages, and later faults continue to expand and cannot be handled, resulting in load reduction or even shutdown. Summary of the invention
[0005] The purpose of the embodiments of the present application is to provide an air separation molecular sieve operation monitoring device, which can solve the technical problem that air separation molecular sieve failures cannot be discovered early.
[0006] An embodiment of the present application provides an air separation molecular sieve operation monitoring device, comprising a control component, a temperature monitoring component and an alarm component, wherein the control component is provided with a control box, a control panel and a control switch, the control panel is installed in the control box, the control switch is installed in the control box and connected to the control panel, the temperature monitoring component is provided with a temperature detection structure, the temperature detection structure is communicatively connected to the control panel and is used to monitor the molecular sieve regeneration gas outlet temperature, and the alarm component is installed in the control box and electrically connected to the control panel.
[0007] Furthermore, the temperature detection structure is provided with a fixed seat, a protective shell, a telescopic tube and a temperature sensor, the fixed seat is used to be installed on the molecular sieve to be monitored, the protective shell is installed on the fixed seat, the telescopic tube is telescopically arranged in the protective shell, and one end of the telescopic tube is located outside the protective shell, and the temperature sensor is arranged at one end of the telescopic tube located in the protective shell.
[0008] Furthermore, the telescopic tube is located at one end outside the protective shell and is provided with a limit lever.
[0009] Furthermore, a graphite sealing ring is provided at the position where the protective shell contacts the telescopic tube.
[0010] Furthermore, the control panel has a timing module, a storage module, a comparison module, an alarm output module and a communication module.
[0011] Furthermore, the alarm component is provided with an audible and visual alarm structure.
[0012] Furthermore, the control box is provided with movable supporting feet.
[0013] Beneficial effects of the utility model:
[0014] The utility model provides an air separation molecular sieve operation monitoring device, comprising a control component, a temperature monitoring component and an alarm component, wherein the control component is provided with a control box, a control board and a control switch, the control board is installed in the control box, the control switch is installed in the control box and connected to the control board, the temperature monitoring component is provided with a temperature detection structure, the temperature detection structure is communicatively connected to the control board and is used to monitor the molecular sieve regeneration gas outlet temperature, the alarm component is installed in the control box and is electrically connected to the control board, the utility model has a simple structure and a reasonable design, and the temperature detection structure is provided to detect the molecular sieve regeneration gas outlet temperature, and the temperature data is transmitted to the control board, so as to monitor the operation status of the molecular sieve, so that the fault status can be discovered as early as possible, and when a fault occurs, the alarm reminder can be realized through the alarm component, so as to deal with the fault as early as possible. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1 This is a schematic diagram of the connection structure of the control component and the alarm component of the utility model;
[0017] Figure 2 It is a schematic diagram of the temperature detection structure of the present utility model.
[0018] The reference numerals are:
[0019] Control component 1, control box 11, control board 12, control switch 13, movable support foot 14, temperature monitoring component 2, fixing seat 21, protective shell 22, telescopic tube 23, temperature sensor 24, limit lever 25, graphite sealing ring 26, alarm component 3. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0021] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0023] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0024] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0025] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0026] See also Figure 1-Figure 2 As shown, the air separation molecular sieve operation monitoring device described in this embodiment includes a control component 1, a temperature monitoring component 2 and an alarm component 3. The control component 1 is provided with a control box 11, a control board 12 and a control switch 13. The control board 12 is installed in the control box 11. The control switch 13 is installed in the control box 11 and connected to the control board 12. The temperature monitoring component 2 is provided with a temperature detection structure, which is communicatively connected to the control board 12 and is used to monitor the molecular sieve regeneration gas outlet temperature. The alarm component 3 is installed in the control box 11 and is electrically connected to the control board 12.
[0027] The present embodiment has a simple structure and a reasonable design. A temperature detection structure is provided to detect the outlet temperature of the molecular sieve regeneration gas, and the temperature data is transmitted to the control board 12, so as to monitor the operating status of the molecular sieve, so that the fault status can be discovered as early as possible, thereby reducing the labor intensity of the operator. At the same time, when a fault occurs, an alarm reminder can be realized through the alarm component 3, so as to deal with the fault as soon as possible and avoid the expansion of the accident.
[0028] In some embodiments, the temperature detection structure is provided with a fixed seat 21, a protective shell 22, a telescopic tube 23 and a temperature sensor 24, the fixed seat 21 is used to be installed on the molecular sieve to be monitored, the protective shell 22 is installed on the fixed seat 21, the telescopic tube 23 is telescopically arranged in the protective shell 22, and one end of the telescopic tube 23 is located outside the protective shell 22, and the temperature sensor 24 is arranged at one end of the telescopic tube 23 located in the protective shell 22.
[0029] The setting of the temperature detection structure is specifically shown in this embodiment. When used specifically, the overall temperature detection structure can be installed at the position of the molecular sieve regeneration gas outlet pipeline to be tested through the fixing seat 21 to perform a temperature test. The detection temperature here is the cold blow peak monitoring temperature, so that the operating status of the molecular sieve can be intelligently monitored based on the temperature data at this position, thereby improving the accuracy of monitoring and reducing the labor intensity of operators.
[0030] In some embodiments, the telescopic tube 23 is located at one end outside the protective shell 22 and is provided with a limit lever 25 .
[0031] In this embodiment, after moving to a suitable test position, the position of the telescopic tube 23 can be fixed based on the limit lever 25 to ensure the accuracy of the test temperature.
[0032] In some embodiments, a graphite sealing ring 26 is provided at the position where the protective shell 22 contacts the telescopic tube 23 .
[0033] In this embodiment, a graphite sealing ring 26 is provided to facilitate sealing to prevent a large amount of gas from escaping from the detection position. At the same time, a sealing ring and other structures are also provided at the installation position of the mounting seat to cooperate with the graphite sealing ring 26 at this position to achieve better sealing.
[0034] In some embodiments, the control panel 12 has a timing module, a storage module, a comparison module, an alarm output module and a communication module.
[0035] In this embodiment, by setting a timing module, timing can be performed starting from cold blowing to select the test density of the temperature, such as recording once every 1 second, and saving the data to the storage module. The comparison module mainly compares the data of the storage module with the theoretical value to help the control board 12 determine whether it is abnormal. If abnormal, the alarm signal is output through the alarm output module to alarm.
[0036] Specifically, the alarm component 3 is provided with an audible and visual alarm structure.
[0037] In this embodiment, by providing an audible and visual alarm structure, the warning effect is good and it is convenient for operators to receive the alarm signal.
[0038] In some embodiments, the control box 11 is provided with movable supporting feet 14 .
[0039] In this embodiment, by providing the movable supporting feet 14, when the control box 11 needs to be placed, the supporting frame is opened, and when it is not needed, it can be folded and stored. The structure is simple and practical.
[0040] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. An air separation molecular sieve operation monitoring device, characterized in that: It includes a control component, a temperature monitoring component and an alarm component. The control component is provided with a control box, a control panel and a control switch. The control panel is installed in the control box. The control switch is installed in the control box and connected to the control panel. The temperature monitoring component is provided with a temperature detection structure. The temperature detection structure is communicatively connected with the control panel and is used to monitor the outlet temperature of the molecular sieve regeneration gas. The alarm component is installed in the control box and electrically connected to the control panel.
2. The air separation molecular sieve operation monitoring device according to claim 1, characterized in that: The temperature detection structure is provided with a fixing seat, a protective shell, a telescopic tube and a temperature sensor. The fixing seat is used to be installed on the molecular sieve to be monitored, the protective shell is installed on the fixing seat, the telescopic tube is telescopically arranged in the protective shell, and one end of the telescopic tube is located outside the protective shell, and the temperature sensor is arranged at one end of the telescopic tube located in the protective shell.
3. The air separation molecular sieve operation monitoring device according to claim 2 is characterized in that: The telescopic tube is located at one end of the outer side of the protective shell and is provided with a limit lever.
4. The air separation molecular sieve operation monitoring device according to claim 2, characterized in that: A graphite sealing ring is provided at the position where the protective shell contacts the telescopic tube.
5. The air separation molecular sieve operation monitoring device according to claim 1, characterized in that: The control panel has a timing module, a storage module, a comparison module, an alarm output module and a communication module.
6. The air separation molecular sieve operation monitoring device according to claim 1, characterized in that: The alarm component is provided with an audible and visual alarm structure.
7. The air separation molecular sieve operation monitoring device according to claim 1, characterized in that: The control box is provided with movable supporting feet.