High-voltage motor pagoda structure direct insulation automatic detection device

Abstract

The invention discloses a high-voltage motor pagoda structure direct insulation automatic detection device, which comprises a background system, a pagoda structure detection device and a display device, and is characterized in that the background system is electrically connected with the pagoda structure detection device and the display device; the appearance of the pagoda structure detection device is a pagoda structure, the upper end of the pagoda structure is a high-voltage current-limiting resistor fixedly sealed by a silicone rubber umbrella skirt structure, and the lower end of the pagoda structure is a metal shell. A motor running state input module, a relay output module, a microprocessor, a DC2500 / 5000V boosting module, a high-voltage isolation relay, a current sampling module and an analog-to-digital conversion module are arranged in the metal shell; the motor operation state input module, the relay output module, the microprocessor, the DC2500 / 5000V boost module, the current sampling module, the analog-to-digital conversion module and the high-voltage isolation relay are connected in sequence, and the device can automatically complete insulation resistance detection before the high-voltage motor is put into operation, does not need manual terminal disassembly and assembly, shortens the detection time, and improves the detection accuracy.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of insulation detection, in particular to a high-voltage motor pagoda structure direct insulation automatic detection device. BACKGROUND

[0002] As an indispensable part of water conservancy projects, pump stations shoulder multiple missions such as flood control, irrigation, water supply regulation, and play a crucial role in the rational allocation of water resources. Today, more and more pump stations use large and medium-sized units; as the "heart" and only power source of the pump station system operation, the safe and reliable operation of high-voltage motors is a powerful guarantee for the economic, efficient and reliable water resource allocation of pump stations.

[0003] The high-voltage motor used in water conservancy pump stations usually refers to an alternating current motor with a rated voltage of 6KV, 10KV or even higher. Through statistical analysis of high-voltage motor operation failures, it is found that 60% of the operation failures are caused by low insulation; insulation aging, moisture, dust accumulation, mechanical damage, etc. are the direct causes of low insulation of high-voltage motors; if the low insulation problem is not discovered and properly handled in time, it will lead to equipment failure, and even may cause safety accidents. SUMMARY

[0004] The purpose of the present application is to provide a high-voltage motor pagoda structure direct insulation automatic detection device that avoids the complexity of traditional bolt insertion, making operation simpler and more convenient, greatly facilitating the assembly and subsequent disassembly and maintenance work of workers, which can solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a high-voltage motor pagoda structure direct insulation automatic detection device, comprising a background system, a pagoda structure detection device and a display device, the background system is electrically connected with the pagoda structure detection device and the display device respectively; The pagoda structure detection device comprises a lower end metal shell, a high-voltage current limiting resistor fixed by a silicon rubber umbrella skirt structure at the upper end, a microprocessor, a relay, a DC2500 / 5000V voltage boosting module, a high-voltage current limiting relay, a current sampling module and an analog-digital conversion module are installed in the metal shell, the microprocessor, the relay, the DC2500 / 5000V voltage boosting module, the high-voltage isolation relay, the current sampling module and the analog-digital conversion module are electrically connected in sequence, the high-voltage isolation relay is electrically connected with the high-voltage current limiting resistor, and the analog-digital conversion module is electrically connected with the microprocessor.

[0006] Preferably, the pagoda structure detection device fixes the high-voltage current limiting resistor by being equipped with a silicon rubber umbrella group structure.

[0007] Preferably, a lap line is arranged at the top of the pagoda structure shell, and the lap line is electrically connected with the high-voltage current limiting resistor.

[0008] Preferably, the display device comprises a display screen and a sleeve, a circuit board is installed on the rear end face of the display screen, the sleeve is externally sleeved on the circuit board, and the sleeve is installed on the rear end face of the display screen.

[0009] Preferably, a plurality of rectangularly distributed screw sleeves are fixedly connected to the rear end face of the display screen, and a matching mounting hole is formed in the rear end face of the sleeve.

[0010] Preferably, a motor operation state input module is installed on the microprocessor, and the motor operation state input module is electrically connected to the microprocessor.

[0011] Preferably, a storage module and a WIFI module are installed on the circuit board, and the circuit board is electrically connected to the display screen, the storage module and the WIFI module.

[0012] Compared with the prior art, the present application has the following advantages: I. Improve detection efficiency and accuracy, the insulating on-line detection system for high-voltage motor with pagoda structure can automatically complete the insulation resistance detection of high-voltage motor before operation, without manual disassembly and assembly of terminals, which shortens the detection time from 2 hours to 3 minutes, and at the same time, the device improves the accuracy of detection through high-precision measurement and intelligent processing, avoiding human measurement error.

[0013] II. Early detection of potential faults, optimization of maintenance plan, the device can store and analyze historical detection data, and through data analysis, the decline trend or abnormal fluctuation of high-voltage motor insulation performance can be found in advance, so as to timely warn potential faults. This helps pump station managers optimize maintenance plans, avoid downtime losses caused by sudden failures, and improve the economy and reliability of pump station operation.

[0014] III. Enhance safety, traditional insulation detection methods require manual operation of megohmmeter or digital insulation detector, which has safety hazards, while the insulating on-line detection system for high-voltage motor with pagoda structure can automatically complete detection in the high-voltage motor shutdown state, without personnel directly contacting high-voltage circuit, reducing the operation risk, in addition, the system automatically discharges the residual high voltage on the stator coil after detection, further ensuring the safety of personnel and equipment.

[0015] IV. Adapt to harsh environment, the insulating on-line detection system for high-voltage motor with pagoda structure adopts core technologies such as pressure-resistant silicone rubber solid-sealed umbrella group structure high-voltage current limiting resistor and DC voltage boosting module, which improves the pressure resistance, moisture resistance and anti-interference ability of the measuring device, which enables the system to operate stably in humid and strong interference signal environments such as water conservancy pump stations, ensuring the accuracy and reliability of detection.

[0016] Five, improve the operation management level of pump station, the application of device helps the pump station management personnel to grasp the insulation state of high voltage motor in real time, provides scientific basis for equipment maintenance and management. Meanwhile, the intelligent and automatic characteristics of the system also improve the automation level and management efficiency of the pump station operation, and provide strong guarantee for the safe and efficient operation of the pump station. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole structure schematic diagram of the present application; Figure 2 It is the control module diagram of the detection device in the present application; Figure 3 It is the split stereoscopic structure schematic diagram of the display device in the present application; Figure 4 It is the detection process wiring diagram of the detection device in the present application; Figure 5 It is the external wiring diagram of the detection device in the present application; Figure 6 It is the display device wiring diagram in the present application.

[0018] In the figure: 1, background system;2, pagoda structure detection device;21, high voltage current limiting resistor of silicon rubber umbrella skirt structure solid seal;22, metal shell;23, microprocessor;24, relay output module;25, DC2500 / 5000V booster module;26, high voltage isolation relay;27, high voltage current limiting resistor;28, current sampling module;29, analog-digital conversion module;3, display device;31, display screen;32, circuit board;33, mounting hole;34, screw sleeve;35, sleeve box;4, high voltage alternating current motor;5, wire;6, motor running state input module. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0020] Please refer to Figures 1 to 6 , a kind of high voltage motor pagoda structure direct type insulation automatic detection device in the figure, including background system 1, pagoda structure detection device 2 and display device 3, the background system 1 is electrically connected with pagoda structure detection device 2 and display device 3 respectively; The pagoda structure detection device 2 includes a silicon rubber umbrella skirt structure fixed high-voltage current limiting resistor 21 and a metal shell 22. The silicon rubber umbrella skirt structure fixed high-voltage current limiting resistor 21 is internally provided with a high-voltage current limiting resistor 27. The metal shell 22 is internally provided with a microprocessor 23, a relay output module 24, a DC 2500 / 5000V voltage boosting module 25, a high-voltage isolation relay 26, a current sampling module 28, and an analog-to-digital conversion module 29. The microprocessor 23, the relay output module 24, the DC 2500 / 5000V voltage boosting module 25, the high-voltage isolation relay 26, the current sampling module 28, and the analog-to-digital conversion module 29 are electrically connected in sequence. The high-voltage isolation relay 26 is electrically connected with the high-voltage current limiting resistor 27. The analog-to-digital conversion module 29 is electrically connected with the microprocessor 23.

[0021] The background system 1 serves as the control center of the system, is responsible for receiving and processing data from the pagoda structure detection device 2, and controls the display device 3 to display relevant information. The pagoda structure detection device 2 is responsible for high-voltage motor insulation detection. The silicon rubber umbrella skirt structure fixed high-voltage current limiting resistor 21 is used to install the high-voltage current limiting resistor 27, and provides certain protection, isolation, and anti-creeper. The metal shell 22 provides firm protection to prevent internal circuit components from being damaged. The microprocessor 23 is responsible for processing data from the current sampling module 28, making insulation judgments, and controlling the work of other circuit components. The relay output module 24 is used to control the on-off of the circuit and the connection of the input-output interface under the control of the microprocessor 23. The DC 2500 / 5000V voltage boosting module 25 raises the voltage to the required test voltage level. The high-voltage isolation relay 26 limits the current to protect the circuit and equipment when the test voltage is too high. The high-voltage current limiting resistor 27 cooperates with the high-voltage isolation relay 26 to further limit the current during the test process. The current sampling module 28 is used to collect current data during the test process and transmit it to the microprocessor 23. The analog-to-digital conversion module 29 converts the analog current signal collected by the current sampling module 28 into a digital signal for processing by the microprocessor 23. The display device 3 is used to display the insulation detection results processed by the background system 1, facilitating user viewing.

[0022] It is worth noting that, The silicon rubber umbrella skirt structure fixed high-voltage current limiting resistor 21 is fixed and sealed by equipping a silicon rubber umbrella skirt structure fixed high-voltage current limiting resistor 27.

[0023] The display screen 31 can set two levels of alarm: pre-warning indicates that the insulation resistance value is seriously reduced and the cause needs to be found out; alarm indicates that the insulation resistance value reaches the lower limit and the device is not allowed to be put into operation after the alarm; when the measured resistance value is less than the pre-warning set value, the alarm indicator light is on, the display screen 31 displays "pre-warning", and it is prompted that the insulation resistance is reduced and attention and cause need to be found out; when the measured resistance value is less than the alarm set value, the alarm indicator light is on, the display screen 31 displays "alarm", and the relay output module 24 is closed, at this time, the device is not allowed to be powered on; the alarm can be cancelled by pressing the reset button; after the alarm is cancelled, the closing lock is not released.

[0024] Referring to Figure 1 As shown, the high-voltage current limiting resistor 21 of the silicone umbrella skirt structure is provided with a lap joint 5 at the top, the lap joint 5 is electrically connected with the high-voltage current limiting resistor 27, and the lap joint 5 can be lap jointed on the high-voltage line of the high-voltage alternating current motor 4 to detect the insulation resistance, so that the detection operation is simple and the overall work efficiency is improved.

[0025] Referring to Figure 3 The display device 3 includes a display screen 31 and a sleeve 35, the rear end surface of the display screen 31 is provided with a circuit board 32, the circuit board 32 is externally sleeved with the sleeve 35, and the sleeve 35 is installed on the rear end surface of the display screen 31 to protect the circuit board 32 from the influence of the external environment and improve the service life of the display device 3, the sleeve 35 is made of stainless steel material with strong anti-interference, corrosion resistance and moisture resistance, and the surface of the sleeve 35 is treated by baking paint spraying, so that the sleeve 35 can be used in complex environments.

[0026] Referring to Figure 3 The rear end surface of the display screen 31 is fixedly connected with a plurality of rectangularly distributed screw sleeves 34, the rear end surface of the sleeve 35 is provided with matching mounting holes 33, the screw sleeves 34 and the mounting holes 33 are matched, and then the sleeve 35 is stably connected with the rear end surface of the display screen 31 by the externally matched long bolts, so that the sleeve 35 is not easy to shake, and the sleeve 35 can be conveniently installed and dismounted on the rear end surface of the display screen 31, so that the circuit board 32 can be conveniently repaired or replaced.

[0027] Referring to Figure 2 The microprocessor 23 is installed with a motor running state input module 6, the motor running state input module 6 is electrically connected with the microprocessor 23, is used for receiving various parameter information such as current, voltage and frequency when the high-voltage motor is running, the microprocessor 23 analyzes and processes the received information to judge whether the motor is in a normal running state, in addition, the microprocessor 23 also has a data storage function and can record historical data of the motor running to provide data support for subsequent analysis and maintenance.

[0028] The circuit board 32 is installed with a storage module and a WIFI module, and is electrically connected with the display screen 31, the storage module and the WIFI module. The storage module is used for storing the data collected by the detection device, and various parameters and state information in the running process. The WIFI module is responsible for transmitting the data to a remote server or a terminal device in real time, so as to realize remote monitoring and analysis of the data. Through the WIFI module, the user can check the insulation state of the high-voltage motor pagoda structure and the working condition of the detection device at any time and anywhere through a mobile phone or a computer. This design not only improves the data processing efficiency, but also enhances the intelligent level of the device.

[0029] Detection principle: DC 2500 / 5000V measuring voltage is injected into the high-voltage alternating current motor 4 through the DC 2500 / 5000V booster module 25, and the motor stator loop will generate a corresponding direct current. The direct current forms a direct current voltage on the sampling circuit inside the pagoda structure detection device 2, which is converted into digital code by the analog-digital conversion module 29, and then calculated and processed by the microprocessor 23. Finally, it is sent to the display device 3 through RS485, and the insulation resistance value of the measured equipment is displayed. By changing the time of injecting DC 2500V into the stator loop, the insulation resistance values of 60S and 15S can be obtained, and the parameters are obtained and stored by the display device 3 and the microprocessor 23. By comparing with the input parameters of the motor running state input module 6, the fault condition can be judged.

[0030] The circuit types involved in the device are as follows: the background system 1 is model CKS32F103x8, the high-voltage current limiting resistor 27 is model RI80, the analog-digital conversion module 29 is model AD7606, the relay output module 24 is model HF49FD, and the high-voltage current limiting resistor 27 is model SIP-HV1A12. The circuits and controls involved are the prior art.

[0031] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes-modifications-replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-voltage motor pagoda structure direct insulation automatic detection device, comprising a background system (1), a pagoda structure detection device (2) and a display device (3), characterized in that, The background system (1) is electrically connected with the pagoda detection device (2) and the display device (3) respectively. The pagoda structure detection device (2) comprises a metal shell (22) and a high-voltage current limiting resistor (21) fixed by a silicone umbrella skirt structure, the high-voltage current limiting resistor (21) is internally provided with a high-voltage current limiting resistor (27), the metal shell (22) is internally provided with a microprocessor (23), a relay output module (24), a DC 2500 / 5000V voltage boosting module (25), a high-voltage isolation relay (26), a current sampling module (28) and an analog-digital conversion module (29), the microprocessor (23), the DC 2500 / 5000V voltage boosting module (25), the current sampling module (28), the analog-digital conversion module (29) and the high-voltage isolation relay (26) are electrically connected in sequence, the high-voltage isolation relay (26) is electrically connected with the high-voltage current limiting resistor (27), and the analog-digital conversion module (29) and the relay output module (24) are electrically connected with the microprocessor (23).

2. A high-voltage electric machine pagoda structure direct insulation automatic detection device according to claim 1, characterized in that: The pagoda structure detection device (2) is provided with the high-voltage current limiting resistor (21) fixed by the silicone umbrella skirt structure.

3. A high voltage machine pagoda structure direct insulation automatic detection device according to claim 1, characterized in that: The pagoda structure detection device (2) is provided with a clamping line (5) at the top, and the clamping line (5) is electrically connected with the high-voltage current limiting resistor (27).

4. A high voltage machine pagoda structure direct insulation automatic detection device according to claim 1, characterized in that: The display device (3) comprises a display screen (31) and a sleeve box (35), the rear end face of the display screen (31) is provided with a circuit board (32), the circuit board (32) is externally provided with the sleeve box (35), and the sleeve box (35) is installed on the rear end face of the display screen (31).

5. A high voltage machine pagoda structure direct insulation automatic detection device according to claim 4, characterized in that: The rear end face of the display screen (31) is fixedly connected with a plurality of rectangularly distributed screw sleeves (34), and the rear end face of the sleeve box (35) is provided with matching mounting holes (33).

6. A high voltage machine pagoda structure direct insulation automatic detection device according to claim 1, characterized in that: The microprocessor (23) is provided with a motor running state input module (6), and the motor running state input module (6) is electrically connected with the microprocessor (23).

7. A high voltage machine pagoda structure direct insulation automatic detection device according to claim 4, characterized in that: The circuit board (32) is provided with a storage module and a WIFI module, and the circuit board (32) is electrically connected with the display screen (31), the storage module and the WIFI module.

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