Temperature monitoring system applied to intelligent motor control cabinet

Abstract

The invention discloses a temperature monitoring system applied to an intelligent motor control cabinet, and the system comprises a temperature sensing assembly, an area temperature monitoring system, a total temperature monitoring system, and an alarm system which are disposed in the motor control cabinet in a sliding manner. The temperature sensing assembly with the driving mechanism is used for monitoring the temperature data of the position where the temperature sensing assembly is located in the motor control cabinet, and the alarm system comprises an analysis unit for analyzing and comparing the temperature data of the total temperature monitoring system, a heat dissipation alarm unit, an element fault alarm unit and a monitoring fault alarm unit. According to the invention, through cooperative arrangement of the plurality of temperature sensing assemblies arranged in a sliding manner and the analysis unit, whether the reason of abnormal temperature monitored by the temperature sensing assemblies is the fault of the temperature sensing assemblies, the fault of the ventilation and heat dissipation system of the motor control cabinet or the fault of part of elements is judged, and alarms are respectively given for the three faults. And guidance is provided for maintenance of workers.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature monitoring, and in particular to a temperature monitoring system applied to an intelligent motor control cabinet. Background Art

[0002] A control cabinet is a device that assembles switchgear, measuring instruments, protective electrical equipment, and auxiliary equipment in a closed or semi-enclosed metal cabinet or on a screen according to electrical wiring requirements. Its layout should meet the requirements for normal operation of the power system, facilitate maintenance, and not endanger the safety of people and surrounding equipment. The control cabinet will be affected by temperature during use. Existing control cabinets do not have a temperature alarm system. When a fault occurs, it cannot be discovered in time, which can easily cause safety hazards.

[0003] In the prior art, the feed channel control cabinet temperature monitoring system with publication number "CN216561553U" includes a first monitoring system, a second monitoring system, a power module and an alarm unit. The first monitoring system and the second monitoring system are both connected to the power module. The first monitoring system includes a first control module and a first temperature sensor. The second monitoring system includes a second temperature sensor and a second control module. The first temperature sensor and the second temperature sensor are both arranged in the control cabinet. The temperature in the control cabinet is detected by the first temperature sensor and the second temperature sensor, and then the first control module analyzes whether the temperature value is within the set value. At the same time, the first control module transmits a signal to the second control module for comparative analysis of the temperature value. When the temperature value error between the two is within the set range, it indicates that the temperature detected by the first temperature sensor and the second temperature sensor is correct. The alarm light and the alarm sound at the same time to remind the staff that there is a problem with the control cabinet temperature. When the temperature value error between the two is not within the set range, it indicates that the temperature detected by the first temperature sensor or the second temperature sensor is inaccurate. The alarm light sounds alone to remind the staff to come for inspection.

[0004] However, the existing technology still has major defects. For example, the existing technology can only detect whether there is a fault in the temperature sensor and whether there is an abnormal temperature inside the control cabinet, but cannot detect whether the abnormal temperature inside the control cabinet is caused by abnormal heating of some electronic components due to a fault, or the heat dissipation and ventilation system of the control cabinet cannot discharge heat due to a fault. Workers need to further investigate the problem. In addition, if the first temperature sensor and the second temperature sensor are too close to each other, it is difficult to reflect the temperature area distribution inside the control cabinet, making it impossible for workers to discover the abnormal heat source in time. If the first temperature sensor and the second temperature sensor are too far apart, and an abnormal heat source happens to appear at the first temperature sensor, and there is no abnormal heat source at the second temperature sensor, it will be misjudged that there is no abnormal heat source in the control cabinet and the first temperature sensor is faulty. Summary of the Invention

[0005] The object of the present invention is to provide a temperature monitoring system for use in an intelligent motor control cabinet to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A temperature monitoring system applied to an intelligent motor control cabinet, comprising: A temperature sensing assembly slidably disposed in the motor control cabinet, wherein the temperature sensing assembly is provided with a driving mechanism and is used to monitor temperature data at a location within the motor control cabinet where the temperature sensing assembly is located; A zone temperature monitoring system that centrally collects temperature data from all temperature sensing components within a single zone of a motor control cabinet; A total temperature monitoring system, which centrally collects temperature data from all regional temperature monitoring systems; An alarm system, the alarm system including an analysis unit for analyzing and comparing temperature data of the overall temperature monitoring system, a heat dissipation alarm unit electrically connected to the analysis unit, and a fault alarm unit electrically connected to the analysis unit, wherein the fault alarm unit includes a component fault alarm unit and a monitoring fault alarm unit; Among them, the analysis unit analyzes and compares the temperature data transmitted by the total temperature monitoring system. When the temperature data monitored by all temperature sensor components exceeds the alarm threshold, the analysis unit controls the heat dissipation alarm unit to work. When the temperature data monitored by a single temperature sensor component exceeds the alarm threshold, the analysis unit controls the driving mechanism to move the temperature sensor component adjacent to the abnormal temperature sensor component in the same area to the abnormal temperature sensor component. The analysis unit then analyzes and compares the absolute value of the difference in temperature data measured by the abnormal temperature sensor component and the temperature sensor component adjacent to it. When the absolute value of the difference in temperature data between the two does not exceed a predetermined value, the analysis unit controls the component fault alarm unit to work. When it exceeds the predetermined value, the analysis unit controls the monitoring fault alarm unit to work.

[0007] Preferably, the temperature sensing assembly includes a temperature sensor for monitoring the temperature, an electromagnet slidably connected to the slide rail, a signal switch installed on the electromagnet and connected to the analysis unit signal, and a warning light installed on the electromagnet and electrically connected to the signal switch and the electromagnet, and the temperature sensor is fixedly mounted on the electromagnet, and a limiting unit is installed on the electromagnet to clamp the electromagnet on the slide rail, the slide rail extends to the adjacent temperature sensor in the same area, and when the electromagnet is energized, it attracts the electromagnet adjacent to it, and attracts the limiting unit on the adjacent electromagnet to no longer clamp the slide rail.

[0008] Preferably, the limiting unit includes an elastic push block that pushes the card block to slide into the internal slot of the slide rail, a pull rope that pulls the card block out of the slot, and a magnetic pull plate connected to the pull rope, and when the electromagnet is energized, the card block leaves the slot by attracting the magnetic pull plate on the adjacent electromagnet.

[0009] Preferably, the limiting unit further includes a guide cylinder for the card block to slide out, and a guide rod that slides through the magnetic pull plate, and the guide cylinder is fixedly mounted on the electromagnet, and the guide rod is fixedly mounted on the guide cylinder.

[0010] Preferably, the temperature sensing assembly further includes a power supply, and the power supply forms a series circuit through a wire and a signal switch, an electromagnet and a warning light.

[0011] Preferably, the regional temperature monitoring system includes a receiving unit for receiving temperature data of the temperature sensing component, and a transmitting unit for transmitting the temperature data to the overall temperature monitoring system.

[0012] Preferably, the overall temperature monitoring system includes a receiving unit for receiving temperature data from the regional temperature monitoring system, a display unit for displaying the temperature data, and a transmission unit for transmitting the temperature data to the alarm system.

[0013] Preferably, the heat dissipation alarm unit, the component failure alarm unit and the monitoring failure alarm unit all include alarm lights, and the three alarm lights emit different colors when in operation.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention is applied to the temperature monitoring system of the intelligent motor control cabinet. It monitors the temperature distribution in various places in the motor control cabinet through multiple temperature sensor components, which is convenient for timely detection of abnormal heat sources. Through the coordinated setting of multiple sliding temperature sensor components and analysis units, it is determined whether the cause of the abnormal temperature detected by the temperature sensor component is a failure of the temperature sensor component, a failure of the ventilation and heat dissipation system of the motor control cabinet, or a failure of some components. It then alarms for the three types of failures respectively and provides guidance for workers to carry out maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall system framework of the present invention; Figure 2 This is a schematic diagram of the installation distribution of the temperature sensor components in the present invention; Figure 3 Schematic top view of a single temperature sensing component in the present invention; Figure 4 For the present invention Figure 3 A cross-sectional diagram of the middle card block inserted into the card slot; Figure 5 for Figure 3Schematic diagram of the state when the middle card block leaves the card slot.

[0016] In the figure: 1 temperature sensor, 2 signal switch, 3 electromagnet, 4 warning light, 5 slide rail, 6 clamping block, 7 elastic push block, 8 pull rope, 9 magnetic pull plate, 10 guide cylinder, 11 guide rod, 12 power supply. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-5 , the present invention provides a technical solution: Example

[0019] A temperature monitoring system applied to an intelligent motor control cabinet, comprising: A temperature sensing assembly is slidably arranged in the motor control cabinet. The temperature sensing assembly with a driving mechanism is used to monitor the temperature data of the location of the temperature sensing assembly in the motor control cabinet. In this embodiment, the internal space of the motor control cabinet is divided into three areas from left to right. A temperature sensing assembly for monitoring temperature data is provided in the upper, middle and lower parts of each area. The temperature sensing assembly is slidably mounted on the inner wall of the motor control cabinet. In this embodiment, nine temperature sensing assemblies perform multi-point monitoring of the internal space of the motor control cabinet. Compared with single-point monitoring, the temperature distribution data inside the motor control cabinet can be comprehensively monitored, thereby facilitating timely detection of abnormal heat sources inside the motor control cabinet. The regional temperature monitoring system centrally collects temperature data from three temperature sensing components within a single area of ​​the motor control cabinet. Specifically, the regional temperature monitoring system includes a receiving unit for receiving temperature data from the temperature sensing components and a transmission unit for transmitting temperature data to the overall temperature monitoring system, thereby achieving the effect of transmitting temperature data from within the motor control cabinet to the overall temperature monitoring system; The overall temperature monitoring system collects temperature data from the three regional temperature monitoring systems. Specifically, the overall temperature monitoring system includes a receiving unit for receiving temperature data from the regional temperature monitoring systems, a display unit for displaying the temperature data, and a transmission unit for transmitting the temperature data to the alarm system. This achieves the effect of transmitting the internal temperature data of the motor control cabinet to the alarm system. The display unit is set to intuitively display the internal temperature data of the motor control cabinet, making it easy for staff to observe the internal temperature data of the motor control cabinet and make judgments; The alarm system includes an analysis unit for analyzing and comparing the temperature data of the total temperature monitoring system, a heat dissipation alarm unit electrically connected to the analysis unit, and a fault alarm unit electrically connected to the analysis unit. The fault alarm unit includes a component fault alarm unit and a monitoring fault alarm unit. The heat dissipation alarm unit, the component fault alarm unit and the monitoring fault alarm unit all include alarm lights, and the alarm lights of the three have different luminous colors when working, so as to facilitate staff to distinguish the cause of the alarm problem in the motor control cabinet.

[0020] As an embodiment, the receiving unit and the conveying unit in the regional temperature monitoring system are both AT89S52 single-chip microcomputers, and the two are electrically connected; the receiving unit and the conveying unit in the total temperature monitoring system are both AT89S52 single-chip microcomputers, and both are electrically connected to the display screen of the display unit; the analysis unit of the alarm system is an AT89S52 single-chip microcomputer; the alarm lights on the heat dissipation alarm unit, the component failure alarm unit, and the monitoring failure alarm unit are all electrically connected to the AT89S52 single-chip microcomputer; the receiving unit in the regional temperature monitoring system is signal-connected to the temperature sensing component, the conveying unit in the regional temperature monitoring system is signal-connected to the receiving unit in the total temperature monitoring system, the conveying unit in the total temperature monitoring system is signal-connected to the analysis unit of the alarm system, the AT89S52 single-chip microcomputers on the heat dissipation alarm unit, the component failure alarm unit, and the monitoring failure alarm unit are all electrically connected to the analysis unit, and the analysis unit is signal-connected to the driving mechanism on the temperature sensing component; The analysis unit analyzes and compares the nine temperature data transmitted by the total temperature monitoring system. When the temperature data monitored by the nine temperature sensor components all exceed the alarm threshold of the analysis unit, it indicates that the temperature inside the motor control cabinet is abnormal, the temperature sensor components are all in normal working condition, and it is difficult for all the internal components of the motor control cabinet to be abnormally overloaded at the same time. The nine temperature sensor components simultaneously monitor a high temperature, which indicates that there is a problem with the ventilation and cooling system of the motor control cabinet. The heat inside the motor control cabinet cannot be discharged in time, causing the collective temperature inside the motor control cabinet to rise. At this time, the analysis unit controls the AT89S52 single-chip microcomputer of the heat dissipation alarm unit to make the alarm light of the heat dissipation alarm unit work, prompting workers to check the ventilation and cooling system of the motor control cabinet. Even if all the internal components of the motor control cabinet are abnormally overloaded at the same time, when workers open the motor control cabinet for inspection, they can promptly determine the cause of the abnormal temperature rise by observing the working status of the components in the motor control cabinet and the burnt smell produced by the overload of a large number of components. When the temperature data monitored by a single temperature sensing component exceeds the alarm threshold, while the temperature data detected by other temperature sensing components does not exceed the alarm threshold, it indicates that the temperature sensing component that detected the abnormal temperature data has failed, or that there is an abnormal component in the area where the temperature sensing component that detected the abnormal temperature data is located and is overloaded, generating high temperature. At this time, the analysis unit controls the driving mechanism so that the temperature sensing component adjacent to the abnormal temperature sensing component (i.e., the temperature sensor that detected the abnormally high temperature data) in the same area moves to the abnormal temperature sensing component, so that the two temperature sensing components detect the same place at the same time. If the absolute value of the difference between the temperature data measured by the two temperature sensing components does not exceed the predetermined value preset by the analysis unit, it indicates that there is no abnormality in the temperature sensing component that detected the abnormally high temperature data, and the high temperature data is true, that is, there is an abnormality at the location where the temperature sensing component that detected the abnormally high temperature data is located. To solve the problem of component overload, the analysis unit controls the AT89S52 single-chip microcomputer of the component fault alarm unit to make the alarm light of the component fault alarm unit work. If the absolute value of the difference in temperature data measured by the two temperature sensor components exceeds the preset value preset by the analysis unit, it means that the temperature sensor component that detects the abnormal high temperature data has an abnormality and the high temperature data is not true. The analysis unit controls the AT89S52 single-chip microcomputer of the monitoring fault alarm unit to make the alarm light of the monitoring fault alarm unit work, thereby realizing the distinction between the temperature rise caused by the overload of the component and the inaccurate monitoring temperature caused by the failure of the temperature sensor component. In addition, the temperature sensor component adjacent to the abnormal temperature sensor component (i.e., the temperature sensor that detects the abnormal high temperature data) in the same area is moved to the abnormal temperature sensor component, so that the staff can find the abnormal part in time for repair or replacement.

[0021] Example 2:

[0022] Example 2 discloses the specific structure of the temperature sensing assembly based on Example 1, namely: the temperature sensing assembly includes a temperature sensor 1 for monitoring the temperature, an electromagnet 3 slidably connected to a slide rail 5, a signal switch 2 mounted on the electromagnet 3 and connected to the signal of the analysis unit, and a warning light 4 mounted on the electromagnet 3 and electrically connected to the signal switch 2 and the electromagnet 3, and the temperature sensor 1 is fixedly mounted on the electromagnet 3, and a limit unit is mounted on the electromagnet 3 to clamp the electromagnet 3 on the slide rail 5, the electromagnet 3, the signal switch 2 and the limit unit form a driving mechanism for driving the temperature sensor 1 to slide, and the temperature sensor 1 is provided with an AT89S52 single-chip connected to the signal of the receiving unit in the regional temperature monitoring system. The chip is used to transmit the temperature data monitored by the temperature sensor 1 to the receiving unit in the regional temperature monitoring system. In this embodiment, the temperature sensors 1 of the three temperature sensing assemblies in the same area share a slide rail 5 arranged in an up-down direction, so that the three temperature sensors are arranged on the slide rail 5 at intervals. The slide rail is two long plates arranged at intervals. The electromagnet 3 is slidably clamped between the two long plates of the slide rail 5, and the slide rail 5 extends to the adjacent temperature sensors in the same area. In addition, the temperature sensing assembly also includes a power supply 12, and the power supply 12 forms a series circuit with the signal switch 2, the electromagnet 3 and the warning light 4 through a wire, so that power is transmitted to the signal switch 2, the electromagnet 3 and the warning light 4 through the power supply 12; The signal switch 2 has a built-in AT89S52 single-chip microcomputer connected to the analysis unit signal. When the temperature data monitored by a single temperature sensor component does not exceed the alarm threshold of the analysis unit, the analysis unit controls the signal switch 2 to remain open, the electromagnet 3 is powered off and loses its magnetism, and the limit unit on the electromagnet 3 is clamped on the slide rail 5, so that the electromagnet 3 remains fixed relative to the slide rail 5, thereby making it easier to keep the three temperature sensors 1 arranged above and below in the same area relatively fixed, thereby facilitating temperature monitoring of the upper, middle and lower parts of the same area. When the temperature data monitored by a single temperature sensor component exceeds the alarm threshold of the analysis unit, the analysis unit controls the signal switch 2 in the temperature sensor component that monitors the abnormal temperature data to close, and the other temperature sensors are closed. The signal switch 2 in the assembly remains in the off state, thereby allowing the electromagnet 3 and the warning light 4 in the temperature sensor assembly that detects abnormal temperature data to operate. The warning light 4 lights up to further remind people that an abnormality has occurred. When the electromagnet 3 is energized, it has magnetism and attracts the adjacent electromagnet 3 that is not energized (because the electromagnet 3 has an iron core that is attracted to the magnetic part), and attracts the limit unit on the adjacent electromagnet 3 that is not energized to no longer block the slide rail 5, so that the electromagnet 3 can slide relative to the slide rail 5, thereby allowing the adjacent electromagnet 3 that is not energized to drive the temperature sensor 1 installed on it to approach the energized electromagnet 3, so that the temperature sensor 1 adjacent to the temperature sensor 1 that detects abnormal temperature data moves to the abnormal location for monitoring; Furthermore, the limiting unit includes a guide cylinder 10 with an opening toward the slide rail 5, and the guide cylinder 10 is fixedly mounted on the electromagnet 3. A card block 6 extending toward the slide rail 5 is slidingly provided in the guide cylinder 10, and an elastic push block 7 is fixedly connected between the inner wall of the guide cylinder 10 away from its opening and the card block 6. The elastic push block 7 has an elastic force to push the card block 6 into the card slot of the slide rail 5. A guide rod 11 extending in a direction close to the adjacent electromagnet 3 is fixedly connected to the outside of the guide cylinder 10, and a magnetic pull plate 9 is provided on the guide rod 11 along its axial direction. Specifically, the guide rod 11 slides through the magnetic pull plate 9, and one end of the card block 6 close to the elastic push block 7 is fixedly connected to a pull rope 8, and the pull rope 8 is also fixedly connected to the guide rod 11. One end is fixedly connected to the end face of the magnetic pull plate 9 close to the guide cylinder 10. When the electromagnet 3 adjacent to this limit unit is not energized, the clamping block 6 extends into the clamping slot of the slide rail 5 under the push of the elastic push block 7, so that the electromagnet 3 installed with this limit unit and the slide rail 5 are relatively fixed. When the electromagnet 3 adjacent to this limit unit is energized, the electromagnet 3 adjacent to this limit unit attracts the magnetic pull plate 9 in this limit unit, so that the magnetic pull plate 9 drives the clamping block 6 to leave the slide rail 5 through the pull rope 8, thereby making the electromagnet 3 installed with this limit unit and the slide rail 5 detached, so that the electromagnet 3 installed with this limit unit slides toward the energized electromagnet 3.

[0023] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A temperature monitoring system applied to an intelligent motor control cabinet, characterized in that: include: A temperature sensing assembly slidably disposed in the motor control cabinet, wherein the temperature sensing assembly is provided with a driving mechanism and is used to monitor temperature data at a location within the motor control cabinet where the temperature sensing assembly is located; A zone temperature monitoring system that centrally collects temperature data from all temperature sensing components within a single zone of a motor control cabinet; A total temperature monitoring system, which centrally collects temperature data from all regional temperature monitoring systems; as well as An alarm system, the alarm system including an analysis unit for analyzing and comparing temperature data of the overall temperature monitoring system, a heat dissipation alarm unit electrically connected to the analysis unit, and a fault alarm unit electrically connected to the analysis unit, wherein the fault alarm unit includes a component fault alarm unit and a monitoring fault alarm unit; Among them, the analysis unit analyzes and compares the temperature data transmitted by the total temperature monitoring system. When the temperature data monitored by all temperature sensor components exceeds the alarm threshold, the analysis unit controls the heat dissipation alarm unit to work. When the temperature data monitored by a single temperature sensor component exceeds the alarm threshold, the analysis unit controls the driving mechanism to move the temperature sensor component adjacent to the abnormal temperature sensor component in the same area to the abnormal temperature sensor component. The analysis unit then analyzes and compares the absolute value of the difference in temperature data measured by the abnormal temperature sensor component and the temperature sensor component adjacent to it. When the absolute value of the difference in temperature data between the two does not exceed a predetermined value, the analysis unit controls the component fault alarm unit to work. When it exceeds the predetermined value, the analysis unit controls the monitoring fault alarm unit to work.

2. The temperature monitoring system for an intelligent motor control cabinet according to claim 1, characterized in that: The temperature sensing assembly includes a temperature sensor for monitoring temperature, an electromagnet slidably connected to the slide rail, a signal switch installed on the electromagnet and connected to the signal of the analysis unit, and a warning light installed on the electromagnet and electrically connected to the signal switch and the electromagnet. The temperature sensor is fixedly installed on the electromagnet, and a limiting unit is installed on the electromagnet to clamp the electromagnet on the slide rail. The slide rail extends to the adjacent temperature sensor in the same area, and when the electromagnet is energized, it attracts the adjacent electromagnet and attracts the limiting unit on the adjacent electromagnet to no longer clamp the slide rail.

3. The temperature monitoring system for an intelligent motor control cabinet according to claim 2, characterized in that: The limiting unit includes an elastic push block that pushes the card block to slide into the card slot inside the slide rail, a pull rope that pulls the card block out of the card slot, and a magnetic pull plate connected to the pull rope. When the electromagnet is energized, the card block leaves the card slot by attracting the magnetic pull plate on the adjacent electromagnet.

4. The temperature monitoring system for an intelligent motor control cabinet according to claim 3 is characterized in that: The limiting unit further comprises a guide cylinder for the card block to slide out, and a guide rod that slides through the magnetic pull plate, and the guide cylinder is fixedly mounted on the electromagnet, and the guide rod is fixedly mounted on the guide cylinder.

5. The temperature monitoring system for an intelligent motor control cabinet according to claim 2, characterized in that: The temperature sensing assembly further includes a power supply, and the power supply forms a series circuit through a wire, a signal switch, an electromagnet, and a warning light.

6. The temperature monitoring system for an intelligent motor control cabinet according to claim 1, characterized in that: The regional temperature monitoring system includes a receiving unit for receiving temperature data of the temperature sensing component and a transmitting unit for transmitting the temperature data to the overall temperature monitoring system.

7. The temperature monitoring system for an intelligent motor control cabinet according to claim 1, characterized in that: The overall temperature monitoring system includes a receiving unit for receiving temperature data of the regional temperature monitoring system, a display unit for displaying the temperature data, and a transmission unit for transmitting the temperature data to the alarm system.

8. The temperature monitoring system for an intelligent motor control cabinet according to claim 1, characterized in that: The heat dissipation alarm unit, the component failure alarm unit and the monitoring failure alarm unit all include alarm lights, and the three alarm lights emit different colors when working.

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