Power transformer fault alarm device
By designing a movable temperature sensor and a transmission belt structure, the problem that traditional sensors cannot cover the windings and core was solved, enabling real-time monitoring and timely alarm of oil temperature in multiple areas inside the transformer, thus reducing safety hazards.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-12
- Publication Date
- 2026-03-31
AI Technical Summary
The traditional fixed installation method of internal temperature sensors in power transformers cannot fully cover the core heat-generating parts such as windings and iron core, resulting in the inability to detect local overheating in a timely manner.
A power transformer fault alarm device was designed. It uses a movable temperature sensor that can rotate above the winding assembly via a transmission belt and lifting rod structure to cover a wider area. It is also equipped with an audible and visual alarm and an oil pump system to deal with the risk of high temperature.
It enables real-time monitoring and timely alarm of oil temperature in multiple areas inside the transformer, reducing the risk of local overheating and minimizing safety hazards caused by high temperatures.
Smart Images
Figure CN224066231U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of power transformer fault alarm, specifically a power transformer fault alarm device. BACKGROUND
[0002] The power transformer is a kind of static electrical equipment using electromagnetic induction principle, converts the AC power of a voltage level into the AC power of another voltage level of same frequency, reduces the high-voltage power generated by power plant and is delivered to user, or the low-voltage power is boosted and is transmitted long distance, realizes the efficient transmission and reasonable distribution of electric energy through voltage conversion, meets the power demand of different users, adjusts impedance in power system, and guarantees system stable operation.
[0003] The power transformer fault alarm device is important equipment for guaranteeing the safe operation of transformer and preventing accidents, continuously monitors the operating state of transformer for 24 hours, including temperature, oil level, gas composition, winding deformation and other key parameters, however, the internal temperature sensor of most traditional power transformers is fixed installation mode, the sensor of fixed installation is usually installed at the top of transformer oil tank or specific area, cannot comprehensively cover the core heating parts such as winding and iron core, leading to local overheating and unable to timely sense. UTILITY MODEL CONTENTS
[0004] In order to make up for the deficiencies of prior art, the internal temperature sensor of most traditional power transformers is fixed installation mode, the sensor of fixed installation is usually installed at the top of transformer oil tank or specific area, cannot comprehensively cover the core heating parts such as winding and iron core, leading to local overheating and unable to timely sense, etc., the utility model provides a power transformer fault alarm device.
[0005] The utility model solves technical scheme that the technical scheme adopts: a power transformer fault alarm device, the surface of shell is fixedly connected with heat dissipation spare, the inner chamber of shell is fixedly connected with winding assembly, the top of shell is fixedly connected with top cover, the side of top cover is provided with detection mechanism;
[0006] The detection mechanism includes driving wheel and driven wheel, and the side of driving wheel and driven wheel is rotatably connected to the side of top cover, the surface of driving wheel and driven wheel is drivingly connected with transmission belt, the surface of transmission belt is fixedly connected with detection frame, the inner chamber of detection frame is slidably connected with lifting rod, the one end of lifting rod is fixedly connected with guide end, the one end of lifting rod is fixedly connected with temperature sensor, the side of top cover is fixedly connected with guide plate, the side of top cover is fixedly installed with audible and visual alarm instrument, and the audible and visual alarm instrument and temperature sensor are electrically connected.
[0007] Preferably, one side of the top cover is fixedly provided with a motor, which is electrically connected with the temperature sensor, and the output end of the motor is fixedly connected with one side of the driving wheel.
[0008] Preferably, the surface of the lifting rod is sleeved with a spring, one end of the spring is fixedly connected with one side of the guide end, and the other end of the spring is fixedly connected with one side of the detection frame.
[0009] Preferably, one side of the top cover is fixedly connected with an oil storage tank, the surface of the oil storage tank is fixedly communicated with an oil injection pipe, and the surface of the oil injection pipe is fixedly connected with the inner cavity of the top cover.
[0010] Preferably, one side of the shell is fixedly provided with an oil pump, which is electrically connected with the temperature sensor, the input end of the oil pump is fixedly connected with an oil pumping pipe, the surface of the oil pumping pipe is fixedly provided with a one-way valve, and the output end of the oil pump is fixedly connected with a spray pipe.
[0011] Preferably, the inner wall of the spray pipe is fixedly connected with a plurality of contraction members.
[0012] Preferably, the inner wall of the spray pipe is fixedly connected with a plurality of dye packages.
[0013] The utility model discloses the beneficial effect lies in:
[0014] The temperature sensor in the detection mechanism is mainly used for monitoring the oil temperature in the shell in real time, and when the transformer fails, heat is generated, the temperature sensor first senses the heat rise, converts the electric signal, and then processes the signal by the control system to start the motor, the motor can drive the driving wheel to rotate, the driving wheel and the driven wheel can support the transmission belt, the temperature sensor is fixedly connected with the transmission belt and the detection frame to form an integral whole through the lifting rod, when the transmission belt drives the detection frame to rotate to the guide plate, the surface of the guide end is in surface with the surface of the guide plate, the guide plate is made of the convex arc plate, the guide end can push the lifting rod and the temperature sensor to descend along the surface of the guide plate, so that the temperature sensor detects the oil temperature of multiple regions in the inner cavity of the shell, when the oil temperature in the shell is higher than the predetermined value, the temperature sensor converts the electric signal, and then processes the signal by the control system to start the sound and light alarm instrument, so that the staff can timely process the failed transformer, and the problems that the temperature sensor in the traditional most power transformer is fixedly installed, the fixedly installed sensor is usually installed on the top of the transformer oil tank or a specific region, cannot comprehensively cover the core heating parts such as the winding and the iron core, and the local overheating cannot be timely sensed are solved. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below only constitute some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0016] Figure 1 It is a first three-dimensional schematic view of the overall structure of the present application.
[0017] Figure 2 It is a schematic view of the internal structure of the shell of the present application.
[0018] Figure 3 It is a three-dimensional schematic view of the detection mechanism of the present application.
[0019] Figure 4 It is a second three-dimensional schematic view of the overall structure of the present application.
[0020] Figure 5 It is a three-dimensional schematic view of the internal structure of the spray pipe of the present application.
[0021] In the figure: 1, shell; 2, heat dissipation piece; 3, winding assembly; 4, top cover; 5, detection mechanism; 501, driving wheel; 502, driven wheel; 503, transmission belt; 504, detection frame; 505, lifting rod; 506, guide end; 507, temperature sensor; 508, guide plate; 509, audible and visual alarm instrument; 6, motor; 7, spring; 8, oil tank; 9, oil injection pipe; 10, oil pump; 11, oil extraction pipe; 12, spray pipe; 13, contraction piece; 14, one-way valve; 15, dye package. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only constitute some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0023] The following will be described in detail Figures 1-5 The present application will be described in detail
[0024] The embodiments of the present application disclose a power transformer fault alarm device. Referring to Figures 1 to 3The utility model provides an electric power transformer fault alarm device, including the shell 1, the surface fixed connection of shell 1 has the heat dissipation spare 2, the inner chamber fixed connection of shell 1 has winding assembly 3, the top of shell 1 is fixedly connected with top cover 4, and one side of top cover 4 is provided with detection mechanism 5,
[0025] Detection mechanism 5 includes driving wheel 501 and driven wheel 502, and the one side of driving wheel 501 and driven wheel 502 is rotatably connected to one side of top cover 4, the surface of driving wheel 501 and driven wheel 502 is drivingly connected with transmission belt 503, the surface of transmission belt 503 is fixedly connected with detection frame 504, the inner chamber of detection frame 504 is slidably connected with lifting rod 505, one end of lifting rod 505 is fixedly connected with guide end 506, one end of lifting rod 505 is fixedly connected with temperature sensor 507, one side of top cover 4 is fixedly connected with guide plate 508, one side of top cover 4 is fixedly installed with audible and visual alarm 509, audible and visual alarm 509 can adopt I500-ETH-A external audible and visual alarm, audible and visual alarm 509 and temperature sensor 507 are electrically connected, temperature sensor 507 can adopt PT100 (4G) type, one side of top cover 4 is fixedly installed with motor 6, and motor 6 and temperature sensor 507 are electrically connected, and motor 6 can adopt 90ST-00630-EX high-temperature-resistant explosion-proof motor.
[0026] The output end of the motor 6 is fixedly connected with one side of the driving wheel 501, and the shell 1 in the power transformer fault alarm device can also be regarded as an oil tank. The winding assembly 3 inside the shell 1 mainly plays a role of concentrating magnetic field, transporting electric energy and insulation, and the heat dissipation piece 2 is provided with a plurality of groups of fixed connections on the outer surface of the shell 1, which is used to increase the heat dissipation area of the transformer and improve the heat dissipation efficiency. The temperature sensor 507 in the detection mechanism 5 is mainly used for real-time monitoring of the oil temperature inside the shell 1. When the transformer fails, heat is generated, and the temperature sensor 507 first senses the increase of heat, converts an electric signal, and then processes the signal by a control system (such as PLC, microcontroller or driver, etc.) to start the motor 6. The motor 6 can drive the driving wheel 501 to rotate, and the driving wheel 501 and the driven wheel 502 can support the transmission belt 503. The temperature sensor 507 is fixedly connected with the transmission belt 503 through the lifting rod 505 and the detection frame 504 to form an integral whole, and the transmission belt 503 drives the detection frame 504 and the temperature sensor 507 to rotate around the winding assembly 3 at the same time. When the transmission belt 503 drives the detection frame 504 to rotate to the guide plate 508, the surface of the guide end 506 is in surface with the surface of the guide plate 508, and the guide plate 508 is made of a protruding arc plate. The guide end 506 can push the lifting rod 505 and the temperature sensor 507 to descend along the surface of the guide plate 508, so that the temperature sensor 507 detects the oil temperature in multiple areas in the inner cavity of the shell 1. When the oil temperature inside the shell 1 is higher than the predetermined value, the temperature sensor 507 converts an electric signal and then processes the signal by a control system to start the sound and light alarm instrument 509, so that the staff can timely process the transformer that fails.
[0027] With reference to Figure 3 The surface of the lifting rod 505 is sleeved with the spring 7, one end of the spring 7 is fixedly connected with one side of the guide end 506, and the other end of the spring 7 is fixedly connected with one side of the detection frame 504. Through the spring 7, the guide end 506 pushes the lifting rod 505 and the temperature sensor 507 to descend along the surface of the guide plate 508 at the same time, and the spring 7 is extruded. Through the rebound characteristics of the spring 7, the temperature sensor 507 is reset.
[0028] With reference to Figures 2 to 4The side of the top cover 4 is fixedly connected with an oil storage tank 8, the surface of the oil storage tank 8 is fixedly connected with an oil injection pipe 9, the surface of the oil injection pipe 9 is fixedly connected to the inner cavity of the top cover 4, one side of the shell 1 is fixedly installed with an oil pump 10, the oil pump 10 is electrically connected between the temperature sensor 507, the input end of the oil pump 10 is fixedly connected with an oil extraction pipe 11, the surface of the oil extraction pipe 11 is fixedly installed with a one-way valve 14, the output end of the oil pump 10 is fixedly connected with a spray pipe 12, through the setting of the spray pipe 12, when the oil temperature in the shell 1 continuously rises, high temperature and high pressure gas may cause the shell 1 to rupture, and even cause fire or explosion, the temperature sensor 507 converts an electric signal, and then the signal is processed by a control system to finally enable the oil pump 10, the oil pump 10 can extract the oil in the shell 1 through the oil extraction pipe 11, and the oil is sprayed out through the spray pipe 12, the rapid oil discharge can reduce the oil amount in the shell 1, thereby reducing the steam pressure generated by high temperature, and preventing the oil tank from being ruptured due to overpressure.
[0029] With reference to Figure 5 The inner wall of the spray pipe 12 is fixedly connected with a plurality of contraction pieces 13, the contraction pieces 13 are arranged on the inner wall of the spray pipe 12 and close to the port of the spray pipe 12, and the oil liquid is compressed and sprayed through the contraction pieces 13, so that the oil liquid discharge efficiency is improved.
[0030] With reference to Figure 5 The inner wall of the spray pipe 12 is fixedly connected with a plurality of dye bags 15, the surface of the dye bag 15 is made of a film, and the inside of the dye bag 15 adopts a pigment with obvious color, when the oil liquid passes through the spray pipe 12, the surface of the dye bag 15 is broken, so that the oil liquid is mixed with the pigment in the dye bag 15, so that the oil discharge is more eye-catching when a fault occurs.
[0031] Working principle: the temperature sensor 507 in the detection mechanism 5 is mainly used for real-time monitoring of the oil temperature inside the shell 1, when the transformer fails to generate heat, the temperature sensor 507 first senses the heat rise, converts the electric signal, and then the control system processes the signal to start the motor 6, the motor 6 can drive the driving wheel 501 to rotate, the driving wheel 501 and the driven wheel 502 can support the transmission belt 503, the temperature sensor 507 is fixedly connected with the transmission belt 503 through the lifting rod 505 and the detection frame 504 to form an integral whole, the transmission belt 503 drives the detection frame 504 and the temperature sensor 507 to rotate around the winding assembly 3, when the transmission belt 503 drives the detection frame 504 to rotate to the guide plate 508, the surface of the guide end 506 is in surface with the surface of the guide plate 508, the guide plate 508 is made of a protruding arc plate, the guide end 506 can push the lifting rod 505 and the temperature sensor 507 to descend along the surface of the guide plate 508, so that the temperature sensor 507 detects the oil temperature in multiple areas in the cavity of the shell 1, the temperature sensor 507 is of PT100(4G) type, can realize wireless connection with the control system and the control equipment, eliminates the wiring step, and ensures that the temperature sensor 507 is not affected by the line when moving.
[0032] When the oil temperature inside the shell 1 is higher than the predetermined value, the temperature sensor 507 converts the electric signal, and then the control system processes the signal to start the sound and light alarm 509, so that the staff can timely process the failed transformer, when the oil temperature inside the shell 1 continues to rise, the high-temperature and high-pressure gas may cause the shell 1 to rupture, and even cause fire or explosion, the temperature sensor 507 converts the electric signal, and then the control system processes the signal to finally start the oil pump 10, the oil pump 10 can extract the oil in the shell 1 through the oil extraction pipe 11, and spray out through the spray pipe 12, the contraction piece 13 is arranged on the inner wall of the spray pipe 12 and close to the port of the spray pipe 12, which can refer to the principle of the Laval tube, the oil is compressed and ejected through the contraction piece 13, thereby improving the efficiency of oil discharge, the surface of the dye bag 15 can be made of a film, the inside of the dye bag 15 can adopt a pigment with obvious color, and the surface of the dye bag 15 is broken when the oil passes through the spray pipe 12, so that the oil is mixed with the pigment in the dye bag 15, so that the oil discharge is more eye-catching when failure occurs.
[0033] The above shows and describes the basic principle, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application.
Claims
1. A power transformer fault alarm device, characterized by: Including the shell (1), the surface of the shell (1) is fixedly connected with the heat dissipation piece (2), the inner cavity of the shell (1) is fixedly connected with the winding assembly (3), the top of the shell (1) is fixedly connected with the top cover (4), one side of the top cover (4) is provided with a detection mechanism (5); The detection mechanism (5) includes a driving wheel (501) and a driven wheel (502), one side of the driving wheel (501) and the driven wheel (502) is rotatably connected to one side of the top cover (4), the surface of the driving wheel (501) and the driven wheel (502) is drivingly connected with a transmission belt (503), the surface of the transmission belt (503) is fixedly connected with a detection frame (504), the inner cavity of the detection frame (504) is slidably connected with a lifting rod (505), one end of the lifting rod (505) is fixedly connected with a guide end (506), one end of the lifting rod (505) is fixedly connected with a temperature sensor (507), one side of the top cover (4) is fixedly connected with a guide plate (508), one side of the top cover (4) is fixedly installed with a sound and light alarm instrument (509), the sound and light alarm instrument (509) and the temperature sensor (507) are electrically connected.
2. The power transformer fault alarm device according to claim 1, characterized in that: One side of the top cover (4) is fixedly installed with a motor (6), the motor (6) and the temperature sensor (507) are electrically connected, and the output end of the motor (6) is fixedly connected with one side of the driving wheel (501).
3. The power transformer fault alarm device of claim 1, wherein: The surface of the lifting rod (505) is provided with a spring (7), one end of the spring (7) is fixedly connected to one side of the guide end (506), and the other end of the spring (7) is fixedly connected to one side of the detection frame (504).
4. The power transformer fault alarm device of claim 1, wherein: One side of the top cover (4) is fixedly connected with an oil tank (8), the surface of the oil tank (8) is fixedly communicated with an oil injection pipe (9), and the surface of the oil injection pipe (9) is fixedly connected to the inner cavity of the top cover (4).
5. The power transformer fault alarm device of claim 1, wherein: One side of the shell (1) is fixedly installed with an oil pump (10), the oil pump (10) and the temperature sensor (507) are electrically connected, the input end of the oil pump (10) is fixedly connected with an oil suction pipe (11), the surface of the oil suction pipe (11) is fixedly installed with a one-way valve (14), and the output end of the oil pump (10) is fixedly connected with a spray pipe (12).
6. A power transformer fault alarm device according to claim 5, characterized in that: The inner wall of the spray pipe (12) is fixedly connected with a contraction piece (13), and the number of the contraction piece (13) is multiple.
7. The power transformer fault alarm device of claim 5, wherein: The inner wall of the spray pipe (12) is fixedly connected with a dye bag (15), and the number of the dye bag (15) is multiple.