A frequency converter fault detection system based on Internet of Things technology

Abstract

The present invention discloses a frequency converter fault detection system based on the Internet of Things technology, comprising: a frequency converter body, an electrical data collector connected to the side of the frequency converter body; a temperature data collector, which is fitted and connected to the frequency converter body through a temperature sensing probe; a vibration data collector, which is fitted and connected to the frequency converter body through a vibration sensing probe, and the vibration data collector, the temperature data collector and the electrical data collector are all interconnected with the Internet of Things gateway; a drive shaft, which is rotatably connected to the side of the drive motor, and the outer side of the drive shaft is rotatably connected to a slide bar; two shock-absorbing clamps, which are correspondingly arranged at the two ends of the frequency converter body; and two cooling plates. The frequency converter fault detection system based on the Internet of Things technology adopts a new structural design, so that the device expands the detection range of the frequency converter, and can perform emergency treatment according to the detection situation, thereby extending the service life of the frequency converter.

Description

Technical Field

[0001] The present invention relates to the technical field of inverter fault detection, and in particular to an inverter fault detection system based on Internet of Things technology. Background Art

[0002] In the pumping station for improving raw water in the city, the water pump is controlled by the frequency converter, which has high power. The frequency converter often has problems during long-term operation. Customers need to check the pipelines, lines, etc., which is time-consuming. A fault detection system is connected to the outside of the frequency converter, which can intelligently detect common faults and reduce the difficulty of frequency converter maintenance. A series multi-level frequency converter inverter circuit fault detection system with application number CN201821356743.2 can detect the voltage and current output of the frequency converter line in real time through the system, but the detection range of the system is limited, and it is not convenient to detect faults caused by some environmental factors in a timely manner.

[0003] During the use of the inverter, the inverter itself is affected by factors such as environmental overheating or external vibration. For example, the temperature is too high and the circuit is short-circuited, or external vibration causes the circuit structure to loosen contact, etc. The fault detection system is not convenient for troubleshooting and detecting these environmental factors, which reduces the fault detection range. At the same time, the inverter will have faults after being affected by the environment for a period of time. The fault detection system is not convenient for emergency treatment of the inverter when an abnormal environment is detected. The probability of inverter failure will not be reduced, affecting the service life of the inverter.

[0004] Therefore, it is necessary to design a frequency converter fault detection system based on Internet of Things technology to address the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a frequency converter fault detection system based on Internet of Things technology to solve the problem proposed in the above background technology that during the use of the frequency converter, the use of the frequency converter itself is affected by factors such as environmental overheating or external vibration. For example, the temperature is too high and the line is short-circuited, or external vibration causes the circuit structure to loosen contact, etc. The fault detection system is not convenient for troubleshooting and detecting these environmental factors, which reduces the fault detection range. At the same time, the frequency converter will have faults after being affected by the environment for a period of time. The fault detection system is not convenient for emergency treatment of the frequency converter when environmental abnormalities are detected. The probability of frequency converter failure will not be reduced, affecting the service life of the frequency converter.

[0006] To achieve the above object, the present invention provides the following technical solution: a frequency converter fault detection system based on Internet of Things technology, comprising:

[0007] The inverter body has an electrical data collector connected to its side;

[0008] A temperature data collector, which is closely connected to the inverter body via a temperature sensing probe;

[0009] A vibration data collector, which is closely connected to the inverter body through a vibration sensing probe, and the vibration data collector, temperature data collector and electrical data collector are all interconnected with the Internet of Things gateway;

[0010] A drive shaft is rotatably connected to the side of the drive motor, and the drive motor is correspondingly arranged at the middle position of the side of the inverter body, and the outer side of the drive shaft is rotatably connected to a slide rod;

[0011] Two shock-absorbing clamps, which are correspondingly arranged at two ends of the inverter body;

[0012] Two cooling plates are arranged on the outer side of the inverter body.

[0013] Preferably, the electrical data collector also includes a Hall voltage sensor and a Hall current sensor:

[0014] An integrated circuit board, which is electrically connected to the inverter body output signal;

[0015] A Hall voltage sensor, which is welded and connected to the upper end of the integrated circuit board;

[0016] The Hall current sensor is welded and connected to the upper end of the integrated circuit board, and the upper end of the integrated circuit board is connected to an AD converter. This part of the circuit structure can detect the current and voltage output by the inverter body and check for electrical abnormalities in the inverter body.

[0017] Preferably, a longitudinal adjustment frame is fixed to the side of the shock-absorbing clamp, and the longitudinal adjustment frame passes through a fixed cylinder that limits its movable direction. By moving the position of the longitudinal adjustment frame up and down, the shock-absorbing clamp is driven to move up and down outside the inverter body. The shock-absorbing clamp is clamped and limited to the upper and lower sides of the inverter body, which can reinforce the inverter and play a shock-absorbing role.

[0018] Preferably, the side of the refrigeration plate is fixedly connected to a transverse adjustment frame, the side of the transverse adjustment frame is interconnected with the mounting plate through a steering rod, and the mounting plate is fixedly connected to the outside of the fixed cylinder, the outside of the steering rod is movably connected to a slip ring, and a pull rod for adjusting a limited height is rotatably installed on the outside of the slip ring, and the refrigeration plate is pushed to move by moving the position of the transverse adjustment frame left and right. When the refrigeration plate is moved to fit the side position of the inverter body, the refrigeration plate is energized to quickly absorb the heat of the inverter body and dissipate the heat outward, thereby reducing the temperature of the inverter body.

[0019] Preferably, the longitudinal adjustment frame and the fixed cylinder form an up and down sliding structure, and the longitudinal adjustment frame and the shock-absorbing clamp block form an integrated structure that is clamped and limited on the outside of the inverter body. The front view of the shock-absorbing clamp block presents an inverted "L" shape. Through the action of the transmission structure, the longitudinal adjustment frame passes through the fixed cylinder and moves up and down, driving the shock-absorbing clamp block to move up and down accordingly.

[0020] Preferably, the transverse adjustment frame and the fixed cylinder form a left-right sliding structure, and the transverse adjustment frame and the refrigeration plate form an integrated structure. At the same time, the refrigeration plates are arranged in parallel and correspondingly on the outside of the inverter body. Through the action of the transmission structure, the transverse adjustment frame passes through the fixed cylinder and moves left and right, driving the refrigeration plates to move left and right accordingly.

[0021] Preferably, the steering rod further includes an outer protection rod and a limit rod:

[0022] An outer protection rod, which is rotatably connected to the outer side of the lateral adjustment frame;

[0023] The limiting rod is rotatably connected to the outer side of the mounting plate. When the steering rod rotates, the limiting rod automatically telescopes and adjusts on the side of the outer protection rod.

[0024] Preferably, the sides of the pull rod and the longitudinal adjustment frame are fixedly connected to a positioning frame with a height driving function, and the interior of the positioning frame is fixedly connected to a round rod, and the exterior of the round rod is slidably connected to a sliding rod. The driving motor is operated to control the rotation of the driving shaft, and the driving shaft controls the sliding rod to slide and adjust on the exterior of the round rod, pushing the positioning frame to move up and down, thereby controlling the corresponding movement and adjustment of the lateral adjustment frame 14 and the longitudinal adjustment frame 12.

[0025] Preferably, the limit rod and the outer protective rod form a telescopic adjustment structure, the outer protective rod and the slip ring form an oblique sliding structure, and when the steering rod rotates, the slip ring slides obliquely on the outside of the steering rod for adjustment.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: the inverter fault detection system based on the Internet of Things technology adopts a new structural design, so that the device can not only detect the electrical data of the inverter body, but also detect the temperature and vibration conditions of the inverter body, thereby expanding the detection range, and controlling the operation of the emergency drive structure according to the detection conditions, controlling and adjusting the inverter body, alleviating some abnormal conditions, and extending the relative service life of the inverter body;

[0027] 1. The data acquisition module of the inverter body is composed of the electrical data collector, the temperature data collector and the vibration data collector. The output voltage and current of the inverter body can be detected through the corresponding circuit structure. At the same time, the temperature and vibration of the inverter body can be detected, so as to expand the detection range of the inverter, determine the influence of some environmental factors on the normal use of the inverter body, and improve the detection effect of the fault detection system;

[0028] 2. The shock-absorbing clamps and cooling plates are arranged on the side of the inverter body. According to the detection data analysis of the fault detection system, when an abnormal environment occurs, the drive motor is started in an emergency to control the rotation of the drive shaft. The drive shaft drives the shock-absorbing clamps and cooling plates to move accordingly through the corresponding transmission structure. The shock-absorbing clamps are clamped on the upper and lower sides of the inverter body, which can stabilize the position of the inverter body and buffer the vibration of the inverter body. When the cooling plate is attached to the outside of the inverter body, it can quickly absorb the heat generated by the inverter body and dissipate the heat to the outside to reduce the temperature of the inverter body. This part of the emergency structure can alleviate some abnormal conditions of the inverter body and extend the service life of the inverter body. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the front structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the front structure of the electrical data collector of the present invention;

[0031] Figure 3 This is a schematic diagram of the structure of the cooling plate and the inverter body in the bonding state of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the shock-absorbing clamp and the inverter body in the fitted state of the present invention;

[0033] Figure 5 It is a schematic diagram of the top cross-sectional structure of the positioning frame of the present invention;

[0034] Figure 6 It is a schematic diagram of the cross-sectional structure of the steering rod of the present invention;

[0035] Figure 7 It is a schematic diagram of the work flow structure of the present invention.

[0036] In the figure: 1. Inverter body; 2. Electrical data collector; 201. Integrated circuit board; 202. Hall voltage sensor; 203. Hall current sensor; 204. AD converter; 3. Temperature sensing probe; 4. Temperature data collector; 5. Vibration sensing probe; 6. Vibration data collector; 7. Internet of Things gateway; 8. Drive shaft; 9. Slide rod; 10. Shock-absorbing clamp; 11. Refrigeration plate; 12. Longitudinal adjustment frame; 13. Fixed cylinder; 14. Transverse adjustment frame; 15. Steering rod; 151. External protection rod; 152. Limit rod; 16. Mounting plate; 17. Slip ring; 18. Pull rod; 19. Positioning frame; 20. Round rod. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0038] See also Figure 1-7 The present invention provides a technical solution: a frequency converter fault detection system based on Internet of Things technology, comprising:

[0039] The inverter body 1 has an electrical data collector 2 connected to its side;

[0040] A temperature data collector 4, which is closely connected to the inverter body 1 through a temperature sensing probe 3;

[0041] A vibration data collector 6 is connected to the inverter body 1 via a vibration sensing probe 5, and the vibration data collector 6, the temperature data collector 4 and the electrical data collector 2 are all connected to the Internet of Things gateway 7;

[0042] A drive shaft 8 is rotatably connected to the side of the drive motor, and the drive motor is correspondingly arranged at the middle position of the side of the inverter body 1, and a slide bar 9 is rotatably connected to the outer side of the drive shaft 8;

[0043] Two shock-absorbing clamps 10 are arranged at the two ends of the inverter body 1 in a corresponding manner;

[0044] Two cooling fins 11 are attached to the outer side of the inverter body 1 .

[0045] In this example, the electrical data collector 2 also includes a Hall voltage sensor 202 and a Hall current sensor 203: an integrated circuit board 201, which is electrically connected to the output signal of the inverter body 1; the Hall voltage sensor 202, which is welded and connected to the upper end of the integrated circuit board 201; the Hall current sensor 203, which is welded and connected to the upper end of the integrated circuit board 201, and the upper end of the integrated circuit board 201 is connected to an AD converter 204.

[0046] When the inverter body 1 is working, the electrical data collector 2, the temperature data collector 4 and the vibration data collector 6 are operated in real time to detect abnormal conditions. The output circuit of the inverter body 1 is connected to the side of the integrated circuit board 201. The voltage and current output by the inverter body 1 are detected by the Hall voltage sensor 202 and the Hall current sensor 203, and the detected signal is converted into data through the AD converter 204 and transmitted outwardly. The detection data is finally transmitted to the client through the Internet of Things gateway 7, which is convenient for the customer to understand the electrical abnormal conditions of the inverter body 1 in real time. The temperature data collector 4 detects the temperature of the inverter body 1 through the temperature sensing probe 3 connected in a close connection, and the vibration data collector 6 detects the vibration of the inverter body 1 through the vibration sensing probe 5 connected in a close connection, judges the impact of environmental factors on the normal use of the inverter body 1, and transmits the detection data to the client through the Internet of Things gateway 7 in real time, expands the detection range, and is convenient for customers to understand more about the fault conditions caused by the use of the inverter body 1, and reduces the number of manual inspections. At the same time, the client can memorize the fault history, which is convenient for comparing and analyzing the factors causing the fault of the inverter body 1.

[0047] A longitudinal adjustment frame 12 is also fixed to the side of the shock-absorbing clamp 10, and the longitudinal adjustment frame 12 penetrates a fixed cylinder 13 that limits its movable direction. The longitudinal adjustment frame 12 and the fixed cylinder 13 form an up-and-down sliding structure, and the longitudinal adjustment frame 12 and the shock-absorbing clamp 10 form an integrated structure that is engaged and limited to the outside of the inverter body 1. The front view of the shock-absorbing clamp 10 is an inverted "L"-shaped structure;

[0048] A lateral adjustment frame 14 is fixedly connected to the side of the refrigeration plate 11, and the side of the lateral adjustment frame 14 is connected to the mounting plate 16 through a steering rod 15, and the mounting plate 16 is fixedly connected to the outside of the fixed cylinder 13, and a slip ring 17 is movably connected to the outside of the steering rod 15, and a pull rod 18 for adjusting the limited height is rotatably installed on the outside of the slip ring 17, and the lateral adjustment frame 14 and the fixed cylinder 13 form a left-right sliding structure, and the lateral adjustment frame 14 and the refrigeration plate 11 form an integrated structure, and the refrigeration plate 11 is arranged in parallel and correspondingly on the outside of the inverter body 1;

[0049] The steering rod 15 further includes an outer protection rod 151 and a limit rod 152. The outer protection rod 151 is rotatably connected to the outer side of the transverse adjustment frame 14; the limit rod 152 is rotatably connected to the outer side of the mounting plate 16. The limit rod 152 and the outer protection rod 151 form a telescopic adjustment structure, and the outer protection rod 151 and the slip ring 17 form an oblique sliding structure.

[0050] The sides of the pull rod 18 and the longitudinal adjustment frame 12 are fixedly connected with a positioning frame 19 for height driving, and the interior of the positioning frame 19 is fixedly connected with a round rod 20, and the exterior of the round rod 20 is slidably connected with a sliding rod 9.

[0051] When the data acquisition module detects that the inverter body 1 is abnormal, some of the abnormal conditions caused by environmental factors can be alleviated by the emergency feedback module, and the driving motor is controlled to drive the driving shaft 8 on the side to rotate. The driving shaft 8 controls the sliding rod 9 to slide correspondingly on the outside of the round rod 20. This part of the driving structure can push the positioning frames 19 on both sides to move up and down. When the positioning frame 19 moves inward, it drives the longitudinal adjustment frame 12 to slide up and down inside the fixed cylinder 13. The longitudinal adjustment frame 12 controls the shock-absorbing clamp 10 to move in the direction close to the inverter body 1, and finally the shock-absorbing clamp 10 is clamped and limited to the upper and lower sides of the inverter body 1, buffering the inverter body 1 from the influence of external environmental vibration factors, stabilizing the state of the inverter body 1 at this time, and avoiding the loose connection of the circuit structure inside the inverter body 1. When the positioning frame 19 moves inward, it drives the longitudinal adjustment frame 12 to slide up and down inside the fixed cylinder 13. The longitudinal adjustment frame 12 controls the shock-absorbing clamp 10 to move in the direction close to the inverter body 1. Finally, the shock-absorbing clamp 10 is clamped and limited to the upper and lower sides of the inverter body 1, buffering the inverter body 1 from the influence of external environmental vibration factors, stabilizing the state of the inverter body 1 at this time, and avoiding the loose connection of the circuit structure inside the inverter body 1. When moving to the outside, the push rod 18 moves synchronously to the outside, and the pull rod 18 rotates on the outside of the slip ring 17. The slip ring 17 controls the steering rod 15 to rotate and adjust (the limit rod 152 automatically retracts and adjusts on the side of the outer protective rod 151). The steering rod 15 rotates to control the lateral adjustment frame 14 to move left and right inside the fixed cylinder 13, and finally pushes the refrigeration plate 11 fixed on the side to move sideways. The refrigeration plate 11 is fitted on the outside of the inverter body 1. At this time, the heat generated on the surface of the inverter body 1 is absorbed by the refrigeration plate 11 in the energized state, and the refrigeration plate 11 quickly dissipates the absorbed heat to the outside, thereby reducing the heat on the surface of the inverter body 1 and avoiding overheating and short circuit inside the inverter body 1. The partial emergency treatment structure can alleviate some abnormal conditions of the inverter body 1 and extend the service life of the inverter body 1.

[0052] Working principle: When using this device, first Figure 1-7In the structure shown in , during use, the working status of the inverter body 1 is detected by the electrical data collector 2, the temperature data collector 4 and the vibration data collector 6, and the detected fault data is transmitted to the client through the Internet of Things gateway, so that the customer can promptly understand the fault conditions that occur when the inverter body 1 is used. At the same time, according to some abnormal conditions detected by the inverter body 1, the emergency processing structure can be started to stabilize the external clamping of the inverter body 1 or cool it down, so as to quickly stabilize the use status of the inverter body 1 and extend the service life of the inverter body 1.

[0053] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A frequency converter fault detection system based on Internet of Things technology, characterized in that: include: The inverter body has an electrical data collector connected to its side; A temperature data collector, which is closely connected to the inverter body via a temperature sensing probe; A vibration data collector, which is closely connected to the inverter body through a vibration sensing probe, and the vibration data collector, temperature data collector and electrical data collector are all interconnected with the Internet of Things gateway; A drive shaft is rotatably connected to the side of the drive motor, and the drive motor is correspondingly arranged at the middle position of the side of the inverter body, and the outer side of the drive shaft is rotatably connected to a slide rod; Two shock-absorbing clamps are arranged at the two ends of the inverter body in a corresponding manner; a longitudinal adjustment frame is fixed to the side of the shock-absorbing clamp, and the longitudinal adjustment frame penetrates a fixed cylinder that limits its movable direction; The longitudinal adjustment frame and the fixed cylinder form an up-and-down sliding structure, and the longitudinal adjustment frame and the shock-absorbing clamping block form an integrated structure that is engaged and limited on the outside of the inverter body, and the front view of the shock-absorbing clamping block is an inverted "L"-shaped structure; 2 cooling plates, which are fitted on the outer side of the inverter body; the side of the cooling plate is fixedly connected with a transverse adjustment frame, the side of the transverse adjustment frame is connected to the mounting plate through a steering rod, and the mounting plate is fixedly connected to the outer side of the fixed cylinder, the outer side of the steering rod is movably connected with a slip ring, and the outer side of the slip ring is rotatably installed with a pull rod for adjusting a limited height; The sides of the pull rod and the longitudinal adjustment frame are fixedly connected with a positioning frame with a height driving function, and the interior of the positioning frame is fixedly connected with a round rod, and the exterior of the round rod is slidably connected with a sliding rod.

2. The inverter fault detection system based on Internet of Things technology according to claim 1 is characterized in that: The electrical data collector also includes a Hall voltage sensor and a Hall current sensor: An integrated circuit board, which is electrically connected to the inverter body output signal; A Hall voltage sensor, which is welded and connected to the upper end of the integrated circuit board; The Hall current sensor is welded and connected to the upper end of the integrated circuit board, and the upper end of the integrated circuit board is connected to an AD converter.

3. The inverter fault detection system based on Internet of Things technology according to claim 1 is characterized in that: The transverse adjustment frame and the fixed cylinder form a left-right sliding structure, and the transverse adjustment frame and the refrigeration plate form an integrated structure. At the same time, the refrigeration plate is arranged in parallel and correspondingly on the outside of the inverter body.

4. The inverter fault detection system based on Internet of Things technology according to claim 1 is characterized in that: The steering rod also includes an outer protection rod and a limit rod: An outer protection rod, which is rotatably connected to the outer side of the lateral adjustment frame; A limiting rod is rotatably connected to the outer side of the mounting plate.

5. The inverter fault detection system based on Internet of Things technology according to claim 4 is characterized in that: The limiting rod and the outer protection rod form a telescopic adjustment structure, and the outer protection rod and the slip ring form an oblique sliding structure.

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