CN116110685B - Power transformer fault diagnosis device - Google Patents
Power transformer fault diagnosis device Download PDFInfo
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- CN116110685B CN116110685B CN202310295793.3A CN202310295793A CN116110685B CN 116110685 B CN116110685 B CN 116110685B CN 202310295793 A CN202310295793 A CN 202310295793A CN 116110685 B CN116110685 B CN 116110685B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/62—Testing of transformers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/72—Testing of electric windings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/404—Protective devices specially adapted for fluid filled transformers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/406—Temperature sensor or protection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The application relates to the technical field of transformer electric fault detection and discloses a power transformer fault diagnosis device which comprises a radiating fin and a conservator, wherein the radiating fin and the conservator are arranged on a transformer body, the conservator and the transformer body are communicated through a communicating pipe, a heat conduction component is arranged on the radiating fin and comprises a heat absorption patch, a connecting sheet, a corrugated sheet and an extending sheet which are sequentially connected end to end, the heat absorption patch is attached to end, the heat conduction component also comprises a heat conduction sheet attached to the corrugated sheet, and a heat absorption disc arranged on a coiled spring, a temperature probe electrically connected with a temperature sensor is sleeved at the bottom end of the communicating pipe in a sliding mode, a traction rope and a test spring which are matched with each other are connected to the temperature probe, and the other end of the traction rope penetrates through the conservator and is connected to a lifting seat. Compared with the prior art, the application solves the series problems of low economic benefit and the like caused by short service life of the transformer winding short-circuit electric fault detection equipment in the prior art.
Description
Technical Field
The application relates to the technical field of transformer electrical fault detection, in particular to a power transformer fault diagnosis device.
Background
The transformer is a device for changing an ac voltage using the principle of electromagnetic induction, and its main components are a primary coil, a secondary coil and an iron core. A transformer is a device that converts voltage, current and impedance using electromagnetic mutual induction. The most basic form of transformer comprises two sets of coils wound with wires and inductively coupled to each other. When an alternating current flows in one coil, an alternating voltage with the same frequency is induced in the other coil, and the magnitude of the induced voltage depends on the degree of coupling and magnetic crosslinking of the two coils.
At present, the transformer with the conservator is characterized in that when the transformer is used, due to the fault of a transformer winding, parts around the winding generate heat, so that the temperature of the transformer is abnormal, the transformer oil is gasified, and even deformation or other damage phenomena of the conservator caused by overlarge pressure occur, therefore, the temperature measurement of the winding in the transformer is extremely important, although a monitoring and diagnosing device for the power transformer is proposed in Chinese patent literature with the publication number of CN206020550U, the fault of the transformer can be divided and monitored according to a certain category specification, the temperature sensor is used for directly measuring the change of the temperature of the winding, or the temperature sensor is used for directly monitoring the temperature of the internal oil of the transformer in real time, the temperature of the winding can be monitored in real time, but the service life of the temperature sensor can be reduced after the transformer oil is soaked in the transformer oil for a long time, in the Chinese patent literature with the publication number of CN114910825A, the internal temperature of the transformer is increased, a color change of a component is caused when the internal winding of the transformer is monitored, and a sealing component is driven to drive the sealing component to be divided and monitored according to the fault, the fault of the transformer is detected by the heat absorption plate, and the internal fault of the transformer is also detected by the heat absorption plate is easy to be detected, and the internal fault of the transformer is detected by the fault is easy, and the fault of the internal fault is detected by the internal fault of the transformer is detected, and the fault of the transformer is detected by the internal fault, and the fault is easy.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the application provides a power transformer fault diagnosis device which has the advantages of being capable of automatically and actively detecting when the internal winding of the transformer has short-circuit faults and the like, and solves the series problems of low economic benefit and the like caused by short service life of short-circuit electric fault detection equipment of the winding of the transformer in the prior art.
(II) technical scheme
In order to achieve the above purpose, the present application provides the following technical solutions: the utility model provides a power transformer fault diagnosis device, includes radiating fin and the conservator of installing on the transformer body, the conservator with be linked together through communicating pipe between the transformer body, be equipped with heat conduction subassembly on the radiating fin, still install reaction chamber and the gasbag that are linked together on the transformer body, be equipped with the hydrogen peroxide that is heated and easily breaks out oxygen in the reaction chamber, heat conduction subassembly is used for with heat conduction on the radiating fin extremely in the reaction chamber, just heat conduction subassembly is including the heat absorption paster, the connection piece that are connected in proper order head and tail, ripple piece and extension piece, the heat absorption paster corresponds the radiating fin is laminated mutually, the extension piece extends to outside the transformer body, just heat conduction subassembly still include with the heat conduction piece that the ripple piece is laminated mutually to and be located the heat absorption dish of installing on the reeled leaf, the bottom of communicating pipe still is equipped with the probe with temperature sensor electric connection, be connected with haulage rope and test spring on the temperature probe, the other end of haulage rope runs through the conservator and connects on the lift seat, the cambered surface is equipped with through the seal groove mutually on the bottom of seal groove is equipped with to the air bag.
Preferably, a plurality of radiating fins on different sides are all installed on the transformer body, just the conservator passes through the pillar and installs the top of transformer body, the top of communicating pipe runs through the conservator and extends to the inside of conservator, still be equipped with the relief valve on the conservator, adjacent the heat absorption paster is installed respectively on adjacent radiating fin's opposite face to through self elasticity with radiating fin pastes tightly, same group the top of heat absorption paster is connected on same the connection piece, the top of connection piece extends to outside the transformer body and is connected with the ripple piece that corresponds, the bottom of extension piece is connected on the top of corresponding the ripple piece, and a plurality of the length and the height of extension piece all are inconsistent.
Preferably, one end of each heat conducting strip is respectively stuck to one side of the corresponding corrugated strip and is matched with the shape of the corrugated strip, one end of each coiled strip is connected with one end of each heat conducting strip, the sealing box is arranged on the transformer body, an inclined hole is formed in the sealing box, the other end of each coiled strip penetrates through the inclined hole and is arranged in the sealing box, the heat absorbing patch, the connecting sheet, the corrugated strip, the extending sheet, the heat conducting strip, the coiled strip and the heat absorbing disc are made of metal copper, and filling round corners for expanding the heat conducting area are further formed in the top of each coiled strip and the bottom of the heat absorbing disc and are made of metal copper.
Preferably, the heat absorption plate is located in the sealing box, the reaction chamber is installed at the top of the heat absorption plate and is coaxially arranged with the heat absorption plate, an exhaust pipe is further arranged on the reaction chamber, the top end of the exhaust pipe penetrates through the sealing box and is communicated with the air bag, and a pressure release valve is arranged on the air bag.
Preferably, the top of the sealing box is fixedly provided with a vertical guide rod, the lifting seat is sleeved on the vertical guide rod in a sliding manner, the vertical spring is sleeved on the corresponding vertical guide rod, two ends of the vertical spring are respectively connected with the top of the sealing box and the bottom of the lifting seat, and the bottom of the lifting seat is in contact with the outer wall of the air bag.
Preferably, the same connecting rod is installed on the inner walls of the two sides of the oil conservator, the traction rope is sleeved in the communicating pipe in a sliding manner, the traction rope is wound on the connecting rod, one end of the traction rope extending out of the oil conservator is connected with a connecting ring, the top of the lifting seat is fixedly connected with a hanging ring, the connecting ring is sleeved on the hanging ring, the other end of the traction rope is connected with the top end of the temperature measuring probe, and the bottom end of the temperature measuring probe penetrates through the communicating pipe and extends out of the bottom end of the communicating pipe.
Preferably, the top end of the temperature measuring probe is fixedly sleeved with a fixing disc, the test spring is sleeved on the temperature measuring probe, and two ends of the test spring are respectively connected to the fixing disc and the inner wall of the bottom end of the communicating pipe.
Preferably, the connecting rod is sleeved with two anti-drop discs, the traction rope is positioned between the two anti-drop discs, the inner walls at the two ends of the communicating pipe are sleeved with fixing pieces, a guide pipe coaxially arranged with the communicating pipe is connected between the two fixing pieces, and the traction rope is slidably sleeved in the guide pipe.
Preferably, the bottom end of the communicating pipe is also sleeved with a scraping ring for cleaning the surface of the temperature measuring probe, and the temperature measuring probe is slidably sleeved in the scraping ring and is kept fit with the inner wall of the scraping ring.
Preferably, the reaction chamber is further communicated with a liquid injection pipe, the other end of the liquid injection pipe penetrates through the sealing box and extends out of the sealing box, and the other end of the liquid injection pipe is communicated with an external hydrogen peroxide supply end and is further provided with an electromagnetic valve.
(III) beneficial effects
Compared with the prior art, the application provides a power transformer fault diagnosis device, which has the following beneficial effects:
1. this power transformer fault diagnosis device fully laminates through the heat absorption paster of copper and the radiating fin that corresponds to on the heat conduction to the connection piece that produces in the transformer is inside, then dispel the heat through connection piece and corrugated plate cooperation natural forced air cooling, thereby the radiating efficiency when radiating fin normally operates on the transformer is improved, in addition, through the diffusion effect that is wavy corrugated plate, make the heat that passes out can possess the relative radiating area on the bigger area, further improve the radiating effect when the transformer normally uses, simultaneously, utilize the effect of the extending piece that extend length is different, refer to the figure, when the horizontal wind direction with corresponding side radiating fin vertical direction appears, outside forced air cooling can be through the guiding effect of the extending piece of uneven, make between the partly cooled natural wind entering adjacent connection piece, and then circulate and take away above heat between adjacent group's heat absorption paster, thereby further optimize the cooling efficiency of transformer in different directions.
2. The power transformer fault diagnosis device can realize the full heat dissipation under the natural operation state of the transformer through the heat dissipation fins, the heat absorption patches, the connecting sheets, the corrugated sheets and the extension sheets on the heat conduction assembly, when the winding fault in the transformer causes short circuit, the inside of the transformer is rapidly heated, at the moment, the heat conduction assembly is matched with the natural air cooling and can not meet the cooling requirement, the redundant heat is conducted into the reaction chamber through the coil spring sheets and the heat absorption disc, so that the hydrogen peroxide is heated and decomposed to generate oxygen, the oxygen is input into the air bag to promote the expansion of the air bag, the lifting seat is jacked up and moved under the guiding action of the vertical guide rod, so that the hauling rope slides into the conservator and drives the temperature measuring probe at the tail end to enter the oil tank in the transformer under the tensioning action of the compression elasticity of the test spring, the oil temperature is tested to judge whether the winding short circuit phenomenon occurs, compared with the prior art, the automatic triggering type active test device not only can perform triggering type active test when the short circuit of the winding occurs in the transformer, realize self-detection when the short circuit electric fault occurs in the winding of the transformer, but also can avoid the problem of short service life caused by long-term soaking of the temperature sensor in the oil tank due to the adoption of the prior art, improves the whole service life of the device for detecting the short circuit electric fault of the winding of the transformer, realizes self-generating type stable detection when the short circuit electric fault occurs in the winding of the transformer, in addition, in the process of self-detecting the short circuit fault of the winding of the transformer, the heat conduction area is enlarged through the arranged filling round corners, the redundant heat on the radiating fins can be transmitted to the heat absorption disc to a greater extent in the limited installation space, the heat conduction efficiency is improved, thereby promoting the decomposition of hydrogen peroxide and timely dragging the temperature measuring probe to detect the oil temperature through the deformation of the air bag, the detection precision of the transformer winding under short circuit is improved, the damage to the oil tank or the conservator caused by overlarge pressure due to overlong preparation time before detection can be avoided, the pressure release valve on the conservator is opened in time, and the sensitivity of the spontaneous detection winding under short circuit electric faults is improved.
3. This power transformer fault diagnosis device, through setting up the anticreep dish, avoid the haulage rope to take place horizontal slip on the connecting rod, simultaneously, through the stand pipe that sets up, also can play the guiding effect that slides to the haulage rope in crooked form communicating pipe, and then fully reduce the friction influence of haulage rope in-process that slides, improve the life of whole device, through setting up the scraping ring, accomplish single temperature measurement at temperature probe after, can utilize the scraping ring to clean the transformer oil on the temperature probe outward appearance, avoid influencing subsequent test accuracy, through setting up sealed box, save the heat on the reeled piece, and through the filleting fillet that sets up, fully conduct the heat to the heat absorption dish on, reduce the energy loss, improve thermal conduction efficiency.
Drawings
FIG. 1 is a schematic perspective view of the present application;
FIG. 2 is a schematic side view of the present application;
FIG. 3 is a schematic perspective view of a transformer body according to the present application;
FIG. 4 is a schematic side view of a portion of a heat conduction assembly according to the present application;
FIG. 5 is a schematic diagram of a cut-away view of the oil conservator of the present application;
FIG. 6 is a schematic view of a cut-away top perspective view of the seal cartridge of the present application;
FIG. 7 is a schematic view of a seal box of the present application in a bottom perspective view;
FIG. 8 is a schematic view showing a cut-away perspective of a communication pipe according to the present application;
fig. 9 is a schematic perspective view of the end of the communication pipe according to the present application.
In the figure: 1. a heat radiation fin; 2. a conservator; 3. a communicating pipe; 4. a heat absorbing patch; 5. a connecting sheet; 6. corrugated sheets; 7. an extension piece; 8. a heat conductive sheet; 9. a rolling reed; 10. a heat absorbing plate; 11. a seal box; 12. a reaction chamber; 13. an air bag; 14. a vertical guide rod; 15. a lifting seat; 16. a vertical spring; 17. a liquid injection pipe; 18. an electromagnetic valve; 19. a connecting rod; 20. a traction rope; 21. a fixing piece; 22. a guide tube; 23. a temperature measurement probe; 24. a fixed plate; 25. testing a spring; 26. filling fillets; 27. a scraping ring.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
As described in the background art, the present application provides a power transformer fault diagnosis device in order to solve the above technical problems.
In a typical embodiment of the application, as shown in fig. 1-9, a power transformer fault diagnosis device comprises a radiating fin 1 and a conservator 2 which are arranged on a transformer body, wherein a relief valve is arranged on the conservator 2, the conservator 2 is communicated with the transformer body through a communicating pipe 3, a heat conducting component is arranged on the radiating fin 1, a reaction chamber 12 and an air bag 13 which are communicated are also arranged on the transformer body, hydrogen peroxide which is heated and easily breaks out oxygen is arranged in the reaction chamber 12, the heat conducting component is used for conducting heat on the radiating fin 1 into the reaction chamber 12, the heat conducting component comprises a heat absorbing patch 4, a connecting sheet 5, a corrugated sheet 6 and an extending sheet 7 which are connected in sequence from beginning to end, the heat absorbing patch 4 is attached to the corresponding radiating fin 1, the extending sheet 7 extends out of the transformer body, the heat conducting component further comprises a heat conducting sheet 8 attached to the corrugated sheet 6, and the heat absorbing plate 10 arranged on the reeled sheet 9, the bottom end of the communicating pipe 3 is also sleeved with a temperature measuring probe 23 electrically connected with a temperature sensor in a sliding manner, the temperature measuring probe 23 is connected with a traction rope 20 and a test spring 25 which are matched with each other for use, the other end of the traction rope 20 penetrates through the oil conservator 2 and is connected with the lifting seat 15, the lifting seat 15 is arranged on the sealing box 11 through the vertical spring 16, the bottom of the lifting seat 15 is also provided with a cambered surface groove matched with the air bag 13, during normal use, the heat absorbing patch 4 made of copper is fully attached to the corresponding radiating fin 1 and conducts heat to the connecting sheet 5, then the radiating fin 1 on the transformer is radiated by the connecting sheet 5 and the corrugated sheet 6, so that the radiating efficiency of the radiating fin 1 on the transformer is improved, in addition, the heat conducted out can have a radiating space on a larger area by the action of the corrugated sheet 6, further improving the heat dissipation effect of the transformer in normal use, and simultaneously, with reference to fig. 4, when the wind direction in the direction perpendicular to the corresponding side heat dissipation fins 1 occurs, external air cooling can enter between adjacent connection pieces 5 through the guiding effect of the uneven extension pieces 7, so that part of cooled natural wind flows between adjacent groups of heat absorption patches 4 and takes away the heat above, thereby further optimizing the cooling efficiency of the transformer in different directions, and in normal operation, the heat generated inside the transformer can realize sufficient heat dissipation through the heat dissipation fins 1, the heat absorption patches 4, the connection pieces 5, the corrugated sheets 6 and the extension pieces 7 on the heat conduction assembly, when the winding fault in the transformer causes short circuit, the temperature in the transformer can rapidly rise at the moment, the heat conduction component is matched with natural air cooling and can not meet the cooling requirement, the redundant heat can be conducted into the reaction chamber 12 through the coil spring sheet 9 and the heat absorption disc 10, so that hydrogen peroxide is heated and decomposed to generate oxygen, and the oxygen is input into the air bag 13 to promote the expansion of the air bag 13, so that under the compression elastic force tensioning action of the test spring 25, the traction rope 20 slides and drives the tail-end temperature probe 23 to enter an oil tank in the transformer to test the oil temperature to judge whether a short circuit phenomenon occurs, the oil temperature is timely acquired through the controller, the pressure relief valve on the oil conservator 2 is timely opened through the controller, the redundant oil pressure under the winding short circuit fault is released, compared with the prior art, the method can perform active test when the winding short circuit occurs to the transformer, realize self test and protection, and can avoid the problem of short service life caused by long-term soaking of the temperature sensor in the oil tank, and stable monitoring during winding short-circuit faults is realized.
As a preferred implementation manner in this embodiment, referring to fig. 2-7, a plurality of heat dissipation fins 1 on different sides are all installed on the transformer body, the oil conservator 2 is installed on the top of the transformer body through a support, the top end of the communicating pipe 3 penetrates through the oil conservator 2 and extends to the inside of the oil conservator 2, the oil conservator 2 is also provided with a pressure release valve, adjacent heat absorption patches 4 are respectively installed on opposite surfaces of the adjacent heat dissipation fins 1 and are tightly attached to the heat dissipation fins 1 through self elasticity, the top ends of the same group of heat absorption patches 4 are connected to the same connecting sheet 5, the top ends of the connecting sheet 5 extend out of the transformer body and are connected with the corresponding corrugated sheets 6, the bottom ends of the extending sheets 7 are connected to the top ends of the corresponding corrugated sheets 6, the lengths and the heights of the extending sheets 7 are not consistent, one ends of the heat conduction sheets 8 are respectively attached to one side of the corresponding corrugated sheets 6 and are matched with the shape of the corrugated sheets 6, one end of the coil spring sheet 9 is connected with one end of a plurality of heat conducting sheets 8, the sealing box 11 is arranged on the transformer body, an inclined hole is formed in the sealing box 11, the other end of the coil spring sheet 9 penetrates through the inclined hole and is arranged in the sealing box 11, the heat absorbing patch 4, the connecting sheet 5, the corrugated sheet 6, the extension sheet 7, the heat conducting sheets 8, the coil spring sheet 9 and the heat absorbing disc 10 are all made of metal copper materials, filling fillets 26 for expanding the heat conducting area are also arranged at the top of the coil spring sheet 9 and the bottom of the heat absorbing disc 10, the filling fillets 26 are made of metal copper materials, when the transformer normally operates, the heat absorbing patch 4 made of copper is fully attached to the corresponding heat radiating fins 1, heat generated in the transformer is conducted to the connecting sheet 5, and then natural air cooling is matched with the corrugated sheet 6 through the connecting sheet 5 to radiate, in addition, through the diffusion effect of the corrugated sheets 6 which are wavy, the heat transferred can have a larger area of relative heat dissipation area, so that the heat dissipation effect of the transformer in normal use is further improved, meanwhile, by utilizing the effect of the extending sheets 7 with different extending lengths, referring to fig. 4, when the horizontal wind direction in the vertical direction of the corresponding side heat dissipation fin 1 occurs, external air cooling can be guided by the uneven extending sheets 7, so that part of cooled natural wind enters between the adjacent connecting sheets 5, and then the heat above the heat dissipation sheets 4 circulate and take away, thereby further optimizing the cooling efficiency of the transformer from different directions.
As a preferred implementation manner in this example, referring to fig. 3, 5-8, the heat absorbing plate 10 is located in the sealing box 11, the reaction chamber 12 is installed at the top of the heat absorbing plate 10 and is coaxially arranged with the heat absorbing plate 10, the reaction chamber 12 is further provided with an exhaust pipe, the top end of the exhaust pipe penetrates through the sealing box 11 and is communicated with the air bag 13, the air bag 13 is provided with a pressure release valve, the top of the sealing box 11 is fixedly provided with a vertical guide rod 14, the lifting seat 15 is slidably sleeved on the vertical guide rod 14, the vertical spring 16 is sleeved on the corresponding vertical guide rod 14, two ends of the vertical spring 16 are respectively connected at the top of the sealing box 11 and the bottom of the lifting seat 15, the bottom of the lifting seat 15 is contacted with the outer wall of the air bag 13, two side inner walls of the oil conservator 2 are provided with the same connecting rod 19, the hauling rope 20 is slidably sleeved in the connecting pipe 3, the hauling rope 20 is wound on the connecting rod 19, and one end of the haulage rope 20 extending to the outside of the conservator 2 is connected with a connecting ring, the top of the lifting seat 15 is fixedly connected with a hanging ring, the connecting ring is sleeved on the hanging ring, the other end of the haulage rope 20 is connected to the top end of the temperature measuring probe 23, the bottom end of the temperature measuring probe 23 penetrates through the communicating pipe 3 and extends to the outside of the bottom end of the communicating pipe 3, the top end of the temperature measuring probe 23 is fixedly sleeved with a fixed disc 24, a test spring 25 is sleeved on the temperature measuring probe 23, two ends of the test spring 25 are respectively connected to the fixed disc 24 and the inner wall of the bottom end of the communicating pipe 3, under normal operation, the heat generated in the transformer can realize sufficient heat dissipation through the heat dissipation fins 1, and the heat absorption patch 4, the connecting sheet 5 and the corrugated sheet 6 on the heat conduction assembly and the extending sheet 7 are matched with natural air cooling, that is not conducted to the coil spring sheet 9 part in the sealing box 11 at the moment, when a winding fault occurs in the transformer to cause short circuit, the inside of the transformer is rapidly heated, at the moment, natural air cooling is matched through the heat conduction assembly, and cooling requirements cannot be met, redundant heat is conducted into the reaction chamber 12 through the coil spring sheet 9 and the heat absorption disc 10, so that hydrogen peroxide is heated and decomposed to generate oxygen, the oxygen is input into the air bag 13 to promote the expansion of the air bag 13, under the guiding action of the vertical guide rod 14, the lifting seat 15 is jacked up to move upwards, so that under the tensioning action of the compression elastic force of the test spring 25, the traction rope 20 slides into the oil conservator 2 and drives the temperature measuring probe 23 at the tail end to enter an oil tank in the transformer, and the oil temperature is tested to judge whether the short circuit phenomenon occurs.
As a preferred implementation manner in this embodiment, referring to fig. 5 and 8, two anti-slip discs are sleeved on the connecting rod 19, the traction rope 20 is located between the two anti-slip discs, fixing sheets 21 are sleeved on the inner walls of two ends of the communicating pipe 3, a guide tube 22 coaxially arranged with the communicating pipe 3 is connected between the two fixing sheets 21, the traction rope 20 is slidably sleeved in the guide tube 22, the traction rope 20 is prevented from horizontally sliding on the connecting rod 19 by the anti-slip discs, and meanwhile, the traction rope 20 can also have a sliding guiding effect in the curved communicating pipe 3 by the aid of the guide tube 22, so that friction influence in the sliding process of the traction rope 20 is sufficiently reduced, and the service life of the whole device is prolonged.
As a preferred implementation manner in this embodiment, referring to fig. 8 and 9, the bottom end of the communicating pipe 3 is further sleeved with a scraping ring 27 for cleaning the surface of the temperature measurement probe 23, the temperature measurement probe 23 is slidably sleeved in the scraping ring 27 and is attached to the inner wall of the scraping ring 27, and after the temperature measurement probe 23 completes single temperature measurement, transformer oil on the outer surface of the temperature measurement probe 23 can be wiped clean by using the scraping ring 27, so that the influence on the subsequent test precision is avoided.
As a preferred implementation manner in this embodiment, referring to fig. 6 and 7, the reaction chamber 12 is further connected with a liquid injection pipe 17, the other end of the liquid injection pipe 17 penetrates through the sealing box 11 and extends out of the sealing box 11, the other end of the liquid injection pipe 17 is connected with an external hydrogen peroxide supply end and is further provided with an electromagnetic valve 18, the hydrogen peroxide in the reaction chamber 12 is conveniently matched with the electromagnetic valve 18 through the arrangement of the liquid injection pipe 17, so that long-term use is realized, in addition, heat on the coil spring sheet 9 is preserved through the arrangement of the sealing box 11, and the heat is fully conducted to the heat absorbing disc 10 through the arranged filling round corners 26, so that energy loss is reduced, and heat conduction efficiency is improved.
The working principle of the application is as follows: when the transformer normally operates, the heat absorption patch 4 made of copper is fully attached to the corresponding radiating fin 1, heat generated in the transformer is conducted to the connecting sheet 5, then the heat is radiated through the matching of the connecting sheet 5 and the corrugated sheet 6 by natural air cooling, radiating efficiency of the radiating fin 1 on the transformer is improved, in addition, the heat conducted out can have a relatively radiating area on a larger area through the diffusion effect of the corrugated sheet 6 in a wavy manner, radiating effect of the transformer in normal use is further improved, meanwhile, by utilizing the effect of the extending sheets 7 with different extending lengths, when horizontal wind directions in the vertical direction with the corresponding side radiating fin 1 occur, external air cooling can enter between adjacent connecting sheets 5 through the guiding effect of the extending sheets 7 with uneven, and then natural wind with partial cooling can circulate between adjacent groups of the heat absorption patches 4 and take away heat on the adjacent connecting sheets, so that cooling efficiency of the transformer is further optimized in different directions.
Under normal operation, heat generated in the transformer can realize sufficient heat dissipation through the heat dissipation fins 1, the heat absorption patches 4, the connecting sheets 5, the corrugated sheets 6 and the extension sheets 7 on the heat conduction assembly and natural air cooling, namely, no heat can be conducted to the coil spring sheet 9 in the sealing box 11 at the moment, when a winding fault in the transformer causes short circuit, the inside of the transformer rapidly rises, at the moment, the heat conduction assembly is matched with natural air cooling and cannot meet the cooling requirement, excessive heat can be conducted into the reaction chamber 12 through the coil spring sheet 9 and the heat absorption disc 10, so that hydrogen peroxide is heated and decomposed to generate oxygen and is input into the air bag 13 to promote the expansion of the air bag 13, under the guiding action of the vertical guide rod 14, the lifting seat 15 is jacked up to move upwards, and under the compression elastic tensioning action of the test spring 25, compared with the prior art, the device can not only perform trigger type active test when the winding short circuit occurs in the transformer to realize self detection when the internal electric fault of the transformer, but also avoid the problem of short service life caused by long-term soaking of the temperature sensor in the oil tank due to the prior art, improve the whole service life of the device for detecting the winding fault of the transformer, realize spontaneous type stable detection when the winding short circuit electric fault of the transformer, and enlarge the heat conduction area through the arranged filling fillets 26 in the process of self-detecting the winding short circuit fault of the transformer, so that the redundant heat on the radiating fin 1 can be transmitted to the heat absorbing disc 10 to a larger extent in the limited installation space, the heat conduction efficiency is improved, so that the decomposition of hydrogen peroxide is promoted, the temperature measuring probe 23 is pulled in time to detect the oil temperature through the deformation of the air bag 13, the detection precision of the transformer winding under short circuit is improved, the situation that the oil tank or the conservator 2 is damaged due to overlarge pressure caused by overlong preparation time before detection can be avoided, the pressure release valve on the conservator 2 is opened in time, and the sensitivity of the spontaneous detection winding under short circuit electric faults is improved.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a power transformer fault diagnosis device, includes radiating fin (1) and conservator (2) of installing on the transformer body, conservator (2) with be linked together through communicating pipe (3), its characterized in that between the transformer body: the heat dissipation fin (1) is provided with a heat conduction component, the transformer body is also provided with a reaction chamber (12) and an air bag (13) which are communicated, the reaction chamber (12) is internally provided with hydrogen peroxide which is heated and is easy to decompose out of oxygen, the heat conduction component is used for conducting heat on the heat dissipation fin (1) to the reaction chamber (12), the heat conduction component comprises a heat absorption patch (4), a connecting sheet (5), a corrugated sheet (6) and an extension sheet (7) which are connected in sequence from beginning to end, the heat absorption patch (4) is attached to the corresponding heat dissipation fin (1), the extension sheet (7) extends out of the transformer body, the heat conduction component further comprises a heat conduction sheet (8) attached to the corrugated sheet (6) and a temperature measurement probe (23) which is arranged on the coil reed (9), a rope (20) which is matched with a temperature sensor is connected to the temperature measurement probe (23) is connected to the temperature measurement probe in a sliding mode, the temperature measurement probe (3) is connected with a lifting and spring seat (15) through a lifting and sealing device (15) which penetrates through a lifting and sealing device (15) at the other end of the lifting device, the bottom of the lifting seat (15) is also provided with a cambered surface groove matched with the air bag (13);
one ends of the plurality of heat conducting fins (8) are respectively stuck to one side of the corresponding corrugated fin (6) and are matched with the shape of the corrugated fin (6), one ends of the coil spring fins (9) are connected with one ends of the plurality of heat conducting fins (8), the sealing box (11) is arranged on the transformer body, inclined holes are formed in the sealing box (11), and the other ends of the coil spring fins (9) penetrate through the inclined holes and are arranged in the sealing box (11);
the heat absorption plate (10) is positioned in the sealing box (11), the reaction chamber (12) is arranged at the top of the heat absorption plate (10) and is coaxially arranged with the heat absorption plate (10), the reaction chamber (12) is also provided with an exhaust pipe, and the top end of the exhaust pipe penetrates through the sealing box (11) and is communicated with the air bag (13);
two ends of the vertical spring (16) are respectively connected with the top of the sealing box (11) and the bottom of the lifting seat (15), and the bottom of the lifting seat (15) is contacted with the outer wall of the air bag (13);
one end of the haulage rope (20) extending out of the conservator (2) is connected with a connecting ring, the top of the lifting seat (15) is fixedly connected with a hanging ring, the connecting ring is sleeved on the hanging ring, the other end of the haulage rope (20) is connected with the top end of the temperature measuring probe (23), and the bottom end of the temperature measuring probe (23) penetrates through the communicating pipe (3) and extends out of the bottom end of the communicating pipe (3);
the top end of the temperature measuring probe (23) is fixedly sleeved with a fixed disc (24), the temperature measuring probe (23) is sleeved with a test spring (25), and two ends of the test spring (25) are respectively connected to the fixed disc (24) and the inner wall of the bottom end of the communicating pipe (3).
2. The power transformer fault diagnosis apparatus according to claim 1, wherein: a plurality of radiating fins (1) on different sides are all installed on the transformer body, just conservator (2) is installed through the pillar the top of transformer body, the top of communicating pipe (3) runs through conservator (2) and extends to the inside of conservator (2), still be equipped with the relief valve on conservator (2), adjacent two heat absorption paster (4) are installed respectively on the opposite face of adjacent radiating fin (1), and through self elasticity with radiating fin (1) paste tightly, two of same group the top of heat absorption paster (4) is connected on same connection piece (5), the top of connection piece (5) extends to outside the transformer body and is connected with corresponding corrugated sheet (6), the bottom of extension piece (7) is connected on the top of corresponding corrugated sheet (6), and a plurality of the length and the height of extension piece (7) are all inconsistent.
3. The power transformer fault diagnosis apparatus according to claim 2, wherein: the heat absorption patch (4), the connecting sheet (5), the corrugated sheet (6), the extension sheet (7), the heat conduction sheet (8), the coil spring sheet (9) and the heat absorption disc (10) are all made of metal copper, the top of the coil spring sheet (9) and the bottom of the heat absorption disc (10) are also provided with filling fillets (26) for expanding the heat conduction area, and the filling fillets (26) are made of metal copper.
4. The power transformer fault diagnosis apparatus according to claim 1, wherein: the air bag (13) is provided with a pressure relief valve.
5. The power transformer fault diagnosis apparatus according to claim 1, wherein: the top of the sealing box (11) is also fixedly provided with a vertical guide rod (14), the lifting seat (15) is sleeved on the vertical guide rod (14) in a sliding manner, and the vertical spring (16) is sleeved on the corresponding vertical guide rod (14).
6. The power transformer fault diagnosis apparatus according to claim 1, wherein: the novel oil conservator is characterized in that the same connecting rod (19) is arranged on the inner walls of the two sides of the oil conservator (2), the traction rope (20) is slidably sleeved in the communicating pipe (3), and the traction rope (20) is wound on the connecting rod (19).
7. The power transformer fault diagnosis apparatus according to claim 6, wherein: two anti-drop discs are sleeved on the connecting rod (19), the traction rope (20) is positioned between the two anti-drop discs, fixing sheets (21) are sleeved on the inner walls of the two ends of the communicating pipe (3), guide pipes (22) coaxially arranged with the communicating pipe (3) are connected between the fixing sheets (21), and the traction rope (20) is slidably sleeved in the guide pipes (22).
8. The power transformer fault diagnosis apparatus according to claim 6, wherein: the bottom of the communicating pipe (3) is also sleeved with a scraping ring (27) for cleaning the surface of the temperature measuring probe (23), and the temperature measuring probe (23) is slidably sleeved in the scraping ring (27) and is kept fit with the inner wall of the scraping ring (27).
9. The power transformer fault diagnosis apparatus according to claim 5, wherein: the reaction chamber (12) is also communicated with a liquid injection pipe (17), the other end of the liquid injection pipe (17) penetrates through the sealing box (11) and extends out of the sealing box (11), and the other end of the liquid injection pipe (17) is communicated with an external hydrogen peroxide supply end and is also provided with an electromagnetic valve (18).
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