Double-liquid-level redundancy control device
By adopting dual-level redundant control devices in sewage treatment, combining capacitive and ultrasonic level sensors, using mobile platforms and automated control systems, the problems of instability and accuracy of liquid level measurement in sewage treatment are solved, and the problem of liquid level measurement in sewage treatment is achieved. The accuracy and stability of liquid level measurement improves the availability and operational stability of wastewater treatment processes.
Patent Information
- Application Number
- CN202420896027.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-26
AI Technical Summary
During the sewage treatment process, existing liquid level sensors are difficult to ensure the accuracy and stability of liquid level measurement under the influence of unstability and foam, which affects the stable operation of the sewage treatment process.
Adopt dual level redundant control devices, combined with capacitive and ultrasonic level sensors, and realize the accuracy and stability of liquid level measurement through mobile platforms and automated control systems, and use a variety of sensors and drive motors to automate Data processing and calibration.
Through the coordination and automated control of the dual level sensor, the accuracy and stability of liquid level measurement are ensured, and the measurement points can be adjusted automatically under the influence of equipment failure or foam, which improves the availability and operation stability of the sewage treatment process.
Smart Images
Figure CN222232911U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid level control, in particular to a double liquid level redundant control device. Background Art
[0002] Redundant control is a control method that uses a certain or multiple number of devices or components to form a control system. When a device or component fails and is damaged, it can be switched to a backup device or component through hardware, software or manual means to replace the damaged device or component, maintain the normal operation of the system, and minimize the downtime loss caused by accidents of the control equipment. Redundant control is an effective means to meet continuous production requirements and improve system availability.
[0003] In order to ensure the stable operation of the sewage treatment process, the liquid level of the liquid pool needs to be measured and monitored during the sewage treatment process. In actual on-site installation, capacitive liquid level sensors or ultrasonic liquid level sensors can be used to measure and monitor the liquid level; but in actual applications, capacitive liquid level sensors have high measurement accuracy, but in the sewage treatment process, the water environment is changeable and prone to instability, while ultrasonic liquid level sensors have high stability in use, but are easily affected by foam, etc., resulting in poor measurement accuracy.
[0004] Therefore, a liquid level control device that can effectively ensure the stability and accuracy of liquid level measurement during sewage treatment, thereby ensuring the stable operation of the sewage treatment process, is a problem that needs to be solved. Utility Model Content
[0005] The purpose of the utility model is to provide a dual liquid level redundant control device to achieve the purpose of accurately and stably measuring and monitoring the liquid level of the liquid pool during sewage treatment.
[0006] To achieve the above purpose, the utility model adopts the following technical solution: a dual liquid level redundant control device, including a support platform, a mobile platform is slidably installed on the support platform, the mobile platform is connected to a measuring device, and two different liquid level sensors are installed in the measuring device.
[0007] Furthermore, a slide rail is arranged and installed on the support platform, a bottom plate is provided in the mobile platform, a slide groove is provided below the bottom plate, and the slide groove cooperates with the slide rail.
[0008] Furthermore, a control cabinet is provided on the base plate, a drive motor is installed in the control cabinet, the drive motor is installed on the base plate, the rotating shaft of the drive motor extends to the bottom of the base plate and is connected to the gear, a rack is installed on the base, and the rack is meshed with the gear.
[0009] Furthermore, a single-chip microcomputer is provided in the control cabinet, and the single-chip microcomputer is connected to the driving motor; a plurality of opposing photoelectric proximity switches are arranged and installed on one side of the platform, and laser displacement sensors are arranged and installed at both ends of the platform; the opposing photoelectric proximity switches and the laser displacement sensors are respectively connected to the single-chip microcomputer; and the single-chip microcomputer is connected to the signal transceiver.
[0010] Furthermore, a solar panel is installed above the control cabinet, and the solar panel is connected to a battery through a solar controller in the control cabinet. The solar controller and the battery are installed in the control cabinet, and the battery supplies power to various components and equipment.
[0011] Furthermore, the control cabinet is connected to a measuring device, an installation box is provided in the measuring device, a capacitive liquid level sensor and an ultrasonic liquid level sensor are fixedly installed in the installation box, and the capacitive liquid level sensor and the ultrasonic liquid level sensor are respectively connected to the single chip microcomputer.
[0012] Beneficial effects of the utility model:
[0013] 1. The liquid level of the liquid pool is measured by dual liquid level sensors. The cooperation between the two can ensure the accuracy and stability of the measurement. When one device fails, the other can work alone, which plays a positive role in the stable operation of the sewage treatment process.
[0014] 2. The measuring device is driven to move by the mobile platform, so multi-point measurement can be achieved during the process. When the measurement deviation is large, the measuring point can be determined automatically or manually for re-measurement, which ensures the accuracy of the measurement. At the same time, it also has a certain guiding role in the judgment of equipment failure (multi-point measurement still has a large error, indicating that equipment failure may occur) and the operation status of the liquid pool (more foam appears in the pool body, indicating that the pool body is not in good operation). BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 This is a schematic diagram of the cooperation structure between the mobile platform and the support platform of the utility model;
[0017] Figure 3 It is a schematic diagram of the structure of the measuring device of the utility model.
[0018] The names corresponding to the marks in the figure are:
[0019] 1. Support platform; 2. Slide rail; 3. Rack; 4. Photoelectric proximity switch; 5. Laser displacement sensor; 6. Mobile platform; 61. Bottom plate; 611. Slide; 62. Control cabinet; 63. Solar panel; 64. Solar controller; 65. Battery; 66. Single chip microcomputer; 67. Signal transceiver; 68. Drive motor; 681. Gear; 7. Measuring device; 71. Installation box; 72. Capacitive liquid level sensor; 73. Ultrasonic liquid level sensor. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.
[0021] Embodiments of the present utility model:
[0022] like Figure 1-3 As described, in the liquid level control device of this embodiment, a base 1 is provided, on which a slide rail 2 is arranged and installed, a mobile platform 6 is slidably installed via the slide rail 2, and the mobile platform 6 is connected to a measuring device 7 via the mobile platform 6, wherein a capacitive liquid level sensor 72 and an ultrasonic liquid level sensor 73 are installed in the measuring device 7.
[0023] A base plate 61 is provided in the mobile platform 6, and a control cabinet 62 is installed on the base plate 61, wherein a slide groove 611 is provided below the base plate 61, and the slide groove 611 cooperates with the slide rail 2; a drive motor 68 is provided in the control cabinet 62, and the drive motor 68 is installed on the base plate 61, and the rotating shaft of the drive motor 68 extends to the bottom of the base plate 61 and is connected to the gear 681, and a rack 3 is arranged and installed on the base 1, and the rack 3 is meshed with the gear 681.
[0024] A plurality of photoelectric proximity switches 4 are arranged and installed on one side of the support platform 1 , and laser displacement sensors 5 are respectively installed on both ends of the support platform 1 . The photoelectric proximity switches 4 and the laser displacement sensors 5 cooperate with the moving platform 6 , respectively.
[0025] A solar panel 63 is arranged on the control cabinet 62, and the solar panel 63 is connected to a solar controller 64 inside the control cabinet 62, and the solar controller 64 is connected to a battery 65; a single-chip microcomputer 66 is arranged in the control cabinet 62, and the single-chip microcomputer 66 is connected to a drive motor 68, and the single-chip microcomputer 66 is connected to a signal transceiver 67; the control cabinet 62 is connected to a measuring device 7, and an installation box 71 is arranged in the measuring device 7, and a capacitive liquid level sensor 72 and an ultrasonic liquid level sensor 73 are fixedly installed in the installation box 71 respectively; the battery 65 supplies power to various components and equipment in the device; the signal transceiver 67 is connected to the control end.
[0026] The principle of this utility model is:
[0027] When the utility model is in use, the support platform 1 is arranged on one side of the liquid pool. During the process, the capacitive liquid level sensor 72 cooperates with the ultrasonic liquid level sensor 73 to achieve accurate measurement of the liquid level in the liquid pool. The two cooperate with each other to ensure the stability and accuracy of the measurement. The capacitive liquid level sensor 72 and the ultrasonic liquid level sensor 73 are existing, and their structural principles will not be repeated here.
[0028] During the actual measurement process, the deviation value measured by the capacitive liquid level sensor 72 and the ultrasonic liquid level sensor 73 can be set to δ. If the deviation value is less than δ during measurement, it means that the measurements of the two are relatively accurate. The average value of the measurements of the two can be used as the final measurement value for signal transmission. If there is a large deviation between the two, that is, the deviation is greater than δ, it is not possible to determine which device has a larger deviation in measurement. The single-chip microcomputer 66 can control the mobile platform 6 to move on the base 1, thereby changing the measuring point and measuring again. If the deviation returns to normal after measurement, the measurement value is reported normally. If the deviation is still large, the measuring point is repeatedly changed for measurement. If the measurement is still not accurate in the end, the operator at the control end can handle it according to the actual situation on site, such as repairing equipment failure, or manually controlling the working platform through the control end to move to a position without foam, thereby eliminating interference and ensuring the accuracy of the measurement.
[0029] The above process involves the transmission, processing and automatic control of data. Since the principles involved are existing mature technologies and are not difficult to understand for those skilled in the art, they will not be elaborated here.
[0030] In the present invention, it also involves a photoelectric proximity switch 4, a laser displacement sensor 5, a solar panel 63 and a solar controller 64, etc. Since they are existing mature technologies, they will not be elaborated here. Among them, the photoelectric proximity switch 4 cooperates with the single-chip microcomputer 66 and the bottom plate 61 of the mobile platform 6 to realize the fixed-point stop of the mobile platform 6, and then realizes the fixed-point measurement of the measuring device 7; the laser displacement sensor 5 can realize the measurement of the position of the mobile platform 6. When the measuring point is manually determined, the mobile platform 6 is prevented from derailing, thereby ensuring the stability of use; the solar panel 63 stably stores energy in the battery 65 through the solar controller 64, thereby ensuring the normal operation of the equipment, energy saving and environmental protection.
Claims
1. A dual liquid level redundant control device, characterized in that: The invention comprises a support platform (1), on which a mobile platform (6) is slidably mounted, the mobile platform (6) is connected to a measuring device (7), and two different liquid level sensors are mounted in the measuring device (7).
2. A dual liquid level redundant control device according to claim 1, characterized in that: A slide rail (2) is arranged and installed on the support platform (1), a bottom plate (61) is arranged in the mobile platform (6), a slide groove (611) is arranged below the bottom plate (61), and the slide groove (611) cooperates with the slide rail (2).
3. A dual liquid level redundant control device according to claim 2, characterized in that: A control cabinet (62) is arranged on the base plate (61), a drive motor (68) is installed in the control cabinet (62), the drive motor (68) is installed on the base plate (61), the rotating shaft of the drive motor (68) extends to the bottom of the base plate (61) and is connected to a gear (681), a rack (3) is arranged and installed on the support platform (1), and the rack (3) is meshed with the gear (681).
4. A dual liquid level redundant control device according to claim 3, characterized in that: The control cabinet (62) is provided with a single-chip microcomputer (66), which is connected to a driving motor (68); a plurality of opposing photoelectric proximity switches (4) are arranged and installed on one side of the support platform (1), and laser displacement sensors (5) are arranged and installed at both ends of the support platform (1); the opposing photoelectric proximity switches (4) and the laser displacement sensors (5) are respectively connected to the single-chip microcomputer (66); and the single-chip microcomputer (66) is connected to a signal transceiver (67).
5. A dual liquid level redundant control device according to claim 4, characterized in that: A solar panel (63) is installed above the control cabinet (62). The solar panel (63) is connected to a battery (65) via a solar controller (64) in the control cabinet (62). The solar controller (64) and the battery (65) are installed in the control cabinet (62). The battery (65) supplies power to various components and equipment.
6. A dual liquid level redundant control device according to claim 4, characterized in that: The control cabinet (62) is connected to the measuring device (7), and an installation box (71) is provided in the measuring device (7). A capacitive liquid level sensor (72) and an ultrasonic liquid level sensor (73) are fixedly installed in the installation box (71), and the capacitive liquid level sensor (72) and the ultrasonic liquid level sensor (73) are respectively connected to the single chip computer (66).