CN108459241B - Aging experimental device with dual temperature detection and control functions - Google Patents
Aging experimental device with dual temperature detection and control functions Download PDFInfo
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- CN108459241B CN108459241B CN201810072321.0A CN201810072321A CN108459241B CN 108459241 B CN108459241 B CN 108459241B CN 201810072321 A CN201810072321 A CN 201810072321A CN 108459241 B CN108459241 B CN 108459241B
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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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
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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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1281—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of liquids or gases
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/22—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element being a thermocouple
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention provides an aging experimental device with double temperature detection and control functions, which is used for simultaneously injecting a solid insulating material and an insulating liquid to perform a thermal aging experiment of a liquid-solid insulating system of a simulated liquid-immersed mechanical or electrical equipment product, and comprises a tank body, a sealing cover and a conductor; the aging experimental device also comprises a plurality of heating pipes, a plurality of heating rods, a plurality of columnar temperature sensors and a plurality of thermocouples; the heating pipe is fixedly connected with the sealing cover and is positioned in the tank body during working, the heating pipe is a straight pipe, an opening of the heating pipe is arranged on one side of the sealing cover facing the outside, the heating rod is arranged in a pipe cavity of the heating pipe, and the insulating liquid is heated by heating the heating pipe; the columnar temperature sensor penetrates through the sealing cover and is fixed with the sealing cover; the thermocouple is arranged on the conductor and used for detecting the temperature of the conductor. The invention can realize double temperature detection and control functions for the aging experimental device, and the heating rod is not directly contacted with the insulating oil, thereby protecting the heating rod and being easy to replace the heating rod.
Description
Technical Field
The invention relates to the technical field of transformer oilpaper insulation aging assessment, in particular to an aging experimental device with dual temperature detection and control functions.
Background
The failure rate of the transformer is gradually increased along with the increase of the service life. If the transformer fails greatly, causing a power supply interruption, a great economic loss is caused. Generally, most of transformer faults are caused by the problem of internal insulation, and the main components of transformer oil and oil-impregnated paper insulation are aged due to the influence of factors such as electricity, heat, machinery and chemistry in the long-term operation process, so that the insulation performance of the transformer is reduced, and the transformer faults are caused. Therefore, in order to reduce the failure rate of the transformer, the aging rule of the transformer oil and the oil-impregnated paper insulation needs to be researched, so that the transformer oil and the oil-impregnated paper insulation can be optimally selected.
In the prior art, for an aging test of transformer oil and oil-impregnated paper insulation, in the experimental process, the internal temperature of an aging experimental device is not detected to be an actual temperature value specifically due to uneven heating; moreover, in the aging experiment requiring higher temperature, it is necessary to clearly confirm the experimental temperature value, and the conventional aging experiment apparatus lacks necessary detection equipment. In addition, traditional ageing experimental apparatus is carrying out the heating process to insulating oil, is carrying out heat treatment through heating rod and insulating oil direct contact, leads to the damage of heating rod easily to and need suspend whole ageing experimentation to change the heating rod under the condition that the heating rod damaged, lead to the interrupt of experiment, bring the data and do not have the continuity and the error appears.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an aging experimental device with double temperature detection and control functions, which can accurately detect the actual temperature of insulating liquid and solid insulating material in the aging experimental device, and the heating rod is not directly contacted with insulating oil, so that the heating rod is protected and is easy to replace; the invention simultaneously detects the temperature of the insulating liquid and the solid insulating material and controls the temperature of the insulating liquid and the conductor, thereby having double temperature detection and control functions.
In order to solve the technical problems, the invention provides the following technical scheme: an aging experimental device with double temperature detection and control functions is used for simultaneously filling a solid insulating material and an insulating liquid to carry out a thermal aging experiment of a liquid-solid insulating system of a simulated liquid-immersed mechanical or electrical equipment product, and comprises a tank body, a sealing cover and a conductor; when the device works, the tank body and the sealing cover are fixed in a sealing manner, the conductor is fixedly connected with the sealing cover and is positioned in the tank body, the conductor is externally connected with a power supply line to heat and control the temperature, and insulating liquid and solid insulating materials are filled in the tank body; the aging experimental device also comprises a plurality of heating pipes, a plurality of heating rods, a plurality of columnar temperature sensors and a plurality of thermocouples; the heating pipe is fixedly connected with the sealing cover and is positioned in the tank body during working, the heating pipe is a straight pipe, an opening of the heating pipe is arranged on one side of the sealing cover facing the outside, the heating rod is arranged in a pipe cavity of the straight pipe, and the heating pipe is heated to heat the insulating liquid; the columnar temperature sensor penetrates through the sealing cover and is fixed with the sealing cover, and is used for measuring the temperature of the insulating liquid; the thermocouple is arranged on the conductor and used for detecting the temperature of the conductor.
Further, the aviation plug of the aging test device penetrates through and is fixed on the sealing cover; the thermocouple is electrically connected with the aviation plug; the column temperature sensor is externally connected with a temperature controller, and the temperature controller detects the insulating liquid in real time through the column temperature sensor.
Furthermore, wiring terminals are fixed to two ends of the conductor, penetrate through the sealing cover and are fixed to the sealing cover through sealing elements.
Further, the sealing element comprises a sealing ring, a washer and a nut, and the binding post is a T-shaped or cross-shaped cylinder and is provided with an external thread structure; the sealing ring is a circular truncated cone body, an internal thread structure is arranged in the circular truncated cone body in a hollow mode, and the binding post penetrates through the circular truncated cone body from the larger end of the circular truncated cone body and is fixedly connected through the thread structure in a matched mode; the gasket is a ring body, the ring body is hollow, the hollow shape is the combination of a lower round table and an upper cylinder, so that the gasket is sleeved on the sealing ring during working and a binding post can pass through the gasket conveniently, and the binding post is in threaded connection with the gasket; the nut is in threaded connection with the binding post and is used for compressing and fixing the sealing ring and the gasket. The sealing effect of the sealing cover can be better matched by the sealing piece, and the sealing device has better oil and gas leakage prevention effect.
Furthermore, the bottom end of the circular truncated cone body of the sealing ring extends outwards to form a circular ring; when the sealing ring works, the circular ring at the bottom end of the circular truncated cone body abuts against the T-shaped or cross-shaped transverse part of the binding post in the tank body, the sealing cover is provided with a circular hole, and the circular truncated cone part of the sealing ring penetrates through the circular hole of the sealing cover and is connected with the gasket outside the tank body.
Furthermore, a groove for placing the O-shaped sealing ring is arranged at the part which is abutted against the smaller circular truncated cone of the sealing ring. The O-shaped sealing ring is arranged in the gasket, so that the O-shaped sealing ring can be better in tight fit connection with the outer surface of the sealing ring.
Further, the conductor is an M-shaped copper conductor, the M-shaped copper conductor is connected with a power line, the aging experiment device is further provided with a current transformer, the current transformer is located outside the tank body and in front of the sealing cover, the power line of the M-shaped copper conductor penetrates through the current transformer, and the current transformer is used for controlling the temperature of the M-shaped copper conductor in real time. The M-shaped copper conductor can be wound with more insulating paper on the surface in the test process, and the temperature of the conductor can be controlled better and accurately by the current transformer.
Preferably, the M-shaped copper conductor is an arc-shaped or preferably arc-shaped protrusion at the bending position.
Further, the heating pipe is fixedly connected with the sealing cover, the heating pipe is a straight pipe, and an opening of the straight pipe is arranged on one side of the sealing cover facing the outside, and the heating pipe means that: the heating pipe and the sealing cover are integrally formed, and an opening of the heating pipe is directly arranged on the sealing cover; or the opening of the heating pipe extends out of the mounting part, the pipe body of the heating pipe penetrates through the sealing cover through a hole formed in the sealing cover, and the pipe body is fixedly connected with one surface, facing the outside of the tank body, of the sealing cover through the mounting part.
Furthermore, the aging test device is also provided with a vent pipe for injecting or discharging gas into or out of the tank body, a vent valve and/or a barometer arranged on the vent pipe and a pipe valve for injecting and discharging liquid on the tank body.
After the technical scheme is adopted, the invention at least has the following beneficial effects:
(1) the columnar temperature sensor can detect the temperature of the insulating liquid in the aging experimental device in real time, so that the heating rod can be subjected to appropriate heating treatment;
(2) according to the heating pipe and the heating rod, the heating rod is subjected to separated treatment, so that the heating rod is prevented from being corroded and damaged due to direct contact with insulating oil in an aging experiment device, the separated heating rod is beneficial to later-stage replacement, the whole aging experiment is not required to be stopped midway in the heating rod replacement process, the heating pipe and the heating rod are rapid and simple, and the experiment process is not influenced;
(3) the thermocouple is arranged on the copper conductor, insulating paper is laid around the thermocouple during an experiment, and the thermocouple detects the temperature of the copper conductor in real time, so that the temperature of the copper conductor required by the insulating paper is accurately adjusted and is used for detecting the temperature resistance degree of the insulating paper on the copper conductor;
(4) the sealing element provided by the invention is directly used for sealing between the binding post and the sealing cover, and has an optimal oil and gas leakage prevention effect.
Drawings
FIG. 1 is a side view of the aging test apparatus of the present invention;
FIG. 2 is a top view of the aging test apparatus of the present invention;
FIG. 3 is a front view of the aging test apparatus of the present invention;
FIG. 4 is a schematic diagram of a conductor structure of the aging test device of the present invention
Fig. 5 is a schematic structural diagram of a sealing member of the aging test apparatus according to the present invention.
Detailed Description
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict, and the present application is further described in detail with reference to the drawings and specific embodiments.
Examples
The invention relates to a material thermal aging experimental device of a liquid-solid insulation system with double temperature detection and double temperature control functions, which is used for simultaneously filling a solid insulation material and an insulating liquid to perform a thermal aging experiment of the liquid-solid insulation system of a simulated liquid-immersed machine or electrical equipment. The power equipment comprises a transformer, related products of the transformer comprise insulating oil, insulating paper, copper conductors and the like, and various performances of the related products of the transformer are tested under the conditions of different temperatures, different voltages, different air pressures and different time. The invention has double temperature detection and control standards by simultaneously detecting the temperature of the insulating liquid and the insulating paper and simultaneously controlling the temperature of the insulating liquid and the conductor.
As shown in fig. 1-3, the aging test device of the present invention comprises a tank 1, a sealing cover 2, a conductor 3, a plurality of columnar temperature sensors 4, a plurality of thermocouples, a plurality of heating pipes 5, a plurality of heating rods, and an aviation plug 6; the tank body 1 and the sealing cover 2 are fixedly connected through a mounting piece, a plurality of mounting holes are formed in the tank wall at the opening of the tank body 1, mounting holes are formed in the corresponding positions of the edge of the sealing cover 2, and the mounting piece penetrates through the mounting holes to fix the tank body 1 and the sealing cover 2; preferably, in order to better prevent air and oil leakage of the aging experimental device, a sealing silica gel strip can be placed at the joint between the tank body 1 and the sealing cover 2. In the embodiment, kraft paper or NomexT910 paper is preferably adopted as the solid insulating material, and the kraft paper is produced by three-wood paper and is used for a mechanical reinforced power transformer; NomexT910 paper is manufactured and supplied by dupont corporation of america; the insulating fluid is preferably a kramey #45 mineral oil from medium petroleum or a FR3 vegetable oil from carge, usa.
On one side of the sealing cover 2, the conductor 3, the columnar temperature sensor 4 and the heating pipe 5 are all vertically fixed on the sealing cover 2, and when the tank body 1 and the sealing cover 2 are in a sealing combination state, the conductor 3, the columnar temperature sensor 4 and the heating pipe 5 are all located in the tank body 1. The thermocouples are arranged on the conductor, the aviation plug 6 penetrates through the sealing cover 2 and is fixed, one end of the aviation plug 6 in the tank body 1 is electrically connected with the thermocouples, and one end outside the tank body 1 is connected with a power supply.
As shown in fig. 4, the conductor 3 is a copper conductor and is an M-shaped copper conductor, and is used for electrifying a heating element inside the analog power equipment; two ends of the connecting rod are respectively fixed with a connecting rod 7, the connecting rod 7 penetrates through the sealing cover 2 and is fixed with the sealing cover 2 by using a sealing piece 8, or the connecting rod 7 can directly penetrate through the sealing cover and is fixedly connected with the sealing cover by using a thread structure, and the sealing piece 8 is used for better preventing oil and gas leakage; preferably, the M-shaped copper conductor is an arc or preferably an arc-shaped projection at the bend. In order to better control the temperature of the conductor 3, the aging experimental device is also provided with a current transformer, the current transformer is positioned outside the tank body and in front of the sealing cover, a binding post 7 of the M-shaped copper conductor is connected with a power line, the power line penetrates through the current transformer, and the current transformer is used for controlling the temperature of the M-shaped copper conductor in real time.
In the state that the aging experimental device is placed right, the M-shaped copper conductor is horizontally placed in the middle of the sealing cover, and the two pins are arranged on the left side and the right side of the sealing cover 2; in this embodiment, the heating pipe 5 is arranged below the conductor 3, the number of the heating pipes 5 is two, the heating pipes 5 are fixedly connected with the sealing cover 2, the heating pipes are U-shaped pipes, and openings of the heating pipes are arranged on one side of the sealing cover facing the outside. However, in a specific experimental operation, the number of the heating pipes 5 can be properly adjusted, and the position can also be properly adjusted; the heating rod and the heating pipe 5 are matched, namely the heating pipe 5 is hollow in the center, the heating rod can be directly inserted into the heating pipe 5 from the outside to be fixedly connected under the condition that the tank body 1 and the sealing cover 2 are in a sealing combination state, and the heating rod and the heating pipe 5 need to be closely attached to each other, so that the heating rod heats the insulating oil of the tank body 1 through the heat conduction of the heating pipe 5 in a heating state; to column temperature sensor 4, in this embodiment, preferentially set up to two, the external temperature controller of column temperature sensor 4, the temperature controller comes real-time detection insulating liquid through column temperature sensor 4. Since the heating tube 5 and the heating rod cooperate with each other, and the heating tube 5 is sleeved on the heating rod, specific reference numerals of the heating rod are not shown in fig. 1-3. Wherein, heating pipe 5 and sealed lid 2 fixed connection, heating pipe 5 are a word venturi tube, and its opening setting is in sealed lid 2 outside one side of orientation, indicates: the heating pipe 5 and the sealing cover 2 are integrally formed, and an opening of the heating pipe 5 is directly arranged on the sealing cover 2; or the opening of the heating pipe 5 extends out of the installation part, the pipe body of the heating pipe 5 penetrates through the sealing cover 2 through a hole formed in the sealing cover 5, and the pipe body is fixedly connected with one surface, facing the outside of the tank body 1, of the sealing cover 2 through the installation part.
The thermocouple of the present invention is placed on the conductor 3 and electrically connected to the aviation plug 6. During the experiment, the thermocouple passes through insulating paper parcel on conductor 3, but real-time detection conductor 3's temperature. The temperature of the conductor 3 is accurately controlled through the thermocouple, and temperature resistance experiments can be carried out on the conductor 3 with the insulating paper at a specific temperature.
The aging experimental device is also provided with a vent pipe, a vent valve and a barometer, wherein the vent pipe and the vent valve are arranged at the tail part of the aging experimental device, and the vent pipe, the vent valve, the barometer and a pipe valve for injecting and discharging liquid are arranged at the top part of the aging experimental device. In the top view of the aging test apparatus shown in fig. 2, a vent pipe, a vent valve, a gas pressure gauge, and a pipe valve for injecting and discharging liquid on the top of the aging test apparatus are omitted, so that the structure of the tank 1 of the aging test apparatus can be more clearly shown.
In the present invention, the terminals 7 are fixed to both ends of the conductor 3, and the terminals 7 are fixed through the sealing cap 2 by using a sealing member 8, as shown in fig. 5, which is a schematic structural view of the sealing member 8. In fig. 5, the post of the post 7 is a T-shaped or cross-shaped cylinder, and the top end of the T-shaped or cross-shaped cylinder is protruded and welded with the conductor 3. In fig. 5, the sealing element 8 comprises a sealing ring 81, a washer 82 and a nut 83, a thread structure is arranged on the outer surface of the terminal post 7, and the terminal post 7 sequentially passes through the sealing ring 81, the washer 82 and the nut 83 and is fixed with the sealing ring, the washer 82 and the nut 83 by a knob through the thread structure; the sealing ring 81 is a truncated cone, the bottom end of the truncated cone protrudes outwards to form a circular ring, when the sealing ring is used, the circular ring of the truncated cone is protruded and abutted against the top end of the T-shaped or cross-shaped cylinder of the binding post, the binding post 7 extrudes the sealing ring 81 forwards, the sealing ring 81 penetrates through the sealing cover 2, and the sealing ring 81 of the truncated cone is more beneficial to preventing oil leakage and air leakage; in this embodiment, the sealing ring 81 is preferably a silicone rubber sealing ring, and the shore hardness thereof is about 70. For the gasket 82, the inner center is hollow, the hollow part comprises a truncated cone hollow part and a cylinder hollow part, when in use, the sealing ring 81 is sleeved by the truncated cone hollow part, and the cylinder hollow part is fixedly connected with the wiring terminal 7 through a thread structure; preferably, a groove for placing an O-shaped sealing ring is formed at a position where the gasket 82 abuts against a smaller circular truncated cone of the sealing ring 81, and when the gasket 82 is connected with the sealing ring 81 in a matching manner, the O-shaped sealing ring is placed, so that the sealing ring 81 and the gasket 82 are attached more closely. On one side of the washer 82, a nut 83 is provided, the nut 83 being rotationally fixed with the post 7 and pressing the washer 82 inward. In this embodiment, a large brass shim is provided between nut 83 and washer 82 to increase the contact area, and nut 83 is a brass nut. The two ends of the copper conductor are connected with two stages of power supply voltage through a binding post 7, the power supply voltage needs to be connected to one side edge of the brass nut through a conducting wire, preferably, a large brass gasket is arranged beside the brass nut, and after the binding post is connected to the conducting wire of the power supply voltage, the conducting wire of the power supply voltage is clamped by the large brass gasket and the brass nut.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various equivalent changes, modifications, substitutions and alterations can be made herein without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims (10)
1. An aging experimental device with double temperature detection and control functions is used for simultaneously filling a solid insulating material and an insulating liquid to carry out a thermal aging experiment of a liquid-solid insulating system of a simulated liquid-immersed mechanical or electrical equipment product, and comprises a tank body, a sealing cover and a conductor; when the device works, the tank body and the sealing cover are fixed in a sealing manner, the conductor is fixedly connected with the sealing cover and is positioned in the tank body, the conductor is externally connected with a power supply line to heat and control the temperature, and insulating liquid and solid insulating materials are filled in the tank body; the device is characterized by also comprising a plurality of heating pipes, a plurality of heating rods, a plurality of columnar temperature sensors and a plurality of thermocouples; the heating pipe is fixedly connected with the sealing cover and is positioned in the tank body during working, the heating pipe is a straight pipe, an opening of the heating pipe is arranged on one side of the sealing cover facing the outside, the heating rod is arranged in a pipe cavity of the straight pipe, and the heating pipe is heated to heat the insulating liquid; the columnar temperature sensor penetrates through the sealing cover and is fixed with the sealing cover, and is used for measuring the temperature of the insulating liquid; the thermocouple is arranged on the conductor and used for detecting the temperature of the conductor.
2. The aging test device with dual temperature detection and control functions as claimed in claim 1, further comprising an aviation plug, wherein the aviation plug penetrates through and is fixed on the sealing cover; the thermocouple is electrically connected with the aviation plug; the column temperature sensor is externally connected with a temperature controller, and the temperature controller detects the insulating liquid in real time through the column temperature sensor.
3. The aging test device with dual temperature detection and control functions as claimed in claim 1, wherein terminals are fixed at two ends of the conductor, and the terminals penetrate through the sealing cover and are fixed with the sealing cover by using a sealing member.
4. The aging test device with dual temperature detection and control functions as claimed in claim 3, wherein the sealing element comprises a sealing ring, a washer and a nut, the binding post is a T-shaped or cross-shaped cylinder and is provided with an external thread structure; the sealing ring is a circular truncated cone body, an internal thread structure is arranged in the circular truncated cone body in a hollow mode, and the binding post penetrates through the circular truncated cone body from the larger end of the circular truncated cone body and is fixedly connected through the thread structure in a matched mode; the gasket is a ring body, the ring body is hollow, the hollow shape is the combination of a lower round table and an upper cylinder, so that the gasket is sleeved on the sealing ring during working and a binding post can pass through the gasket conveniently, and the binding post is in threaded connection with the gasket; the nut is in threaded connection with the binding post and is used for compressing and fixing the sealing ring and the gasket.
5. The aging test device with dual temperature detection and control functions as claimed in claim 4, wherein the bottom end of the truncated cone body of the sealing ring extends outwards to form a circular ring; when the sealing device works, the circular ring at the bottom end of the round table body abuts against the T-shaped or cross-shaped transverse part of the binding post in the tank body, the sealing cover is provided with a round hole, and the round table body of the sealing ring penetrates through the round hole of the sealing cover and is connected with the gasket outside the tank body.
6. The aging test device with dual temperature detection and control functions as claimed in claim 4, wherein a groove for placing an O-shaped sealing ring is arranged at the position where the gasket abuts against the smaller cone of the sealing ring.
7. The aging test device with dual temperature detection and control functions as claimed in claim 1, wherein the conductor is an M-shaped copper conductor, the M-shaped copper conductor is connected with a power line, the aging test device is further provided with a current transformer, the current transformer is located outside the tank body and in front of the sealing cover, the power line of the M-shaped copper conductor passes through the current transformer, and the current transformer is used for controlling the temperature of the M-shaped copper conductor in real time.
8. The aging test device with dual temperature detection and control functions as claimed in claim 7, wherein the M-shaped copper conductor is an arc-shaped or preferably arc-shaped protrusion at the bending position.
9. The aging test device with dual temperature detection and control functions as claimed in claim 1, wherein the heating tube is fixedly connected with the sealing cover, the heating tube is a straight tube, and the opening of the heating tube is arranged on the side of the sealing cover facing the outside, which means that: the heating pipe and the sealing cover are integrally formed, and an opening of the heating pipe is directly arranged on the sealing cover; or the opening of the heating pipe extends out of the mounting part, the pipe body of the heating pipe penetrates through the sealing cover through a hole formed in the sealing cover, and the pipe body is fixedly connected with one surface, facing the outside of the tank body, of the sealing cover through the mounting part.
10. The aging test apparatus with dual temperature detection and control functions as claimed in any one of claims 1 to 9, wherein the aging test apparatus further comprises a vent pipe for injecting or discharging gas into or from the tank, a vent valve and/or a gas pressure gauge provided on the vent pipe, and a pipe valve for injecting and discharging liquid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810072321.0A CN108459241B (en) | 2018-01-25 | 2018-01-25 | Aging experimental device with dual temperature detection and control functions |
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| CN201810072321.0A CN108459241B (en) | 2018-01-25 | 2018-01-25 | Aging experimental device with dual temperature detection and control functions |
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| CN108459241A CN108459241A (en) | 2018-08-28 |
| CN108459241B true CN108459241B (en) | 2020-09-15 |
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| CN112540249B (en) * | 2020-11-13 | 2024-02-23 | 广东电网有限责任公司广州供电局 | Vegetable oil transformer thermal fault simulation device based on dual-temperature model |
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| CN206515425U (en) * | 2016-09-23 | 2017-09-22 | 北京三清互联科技有限公司 | High-tension transformer insulate and degradation failure diagnostic device |
| CN207730885U (en) * | 2018-01-25 | 2018-08-14 | 广东中鹏电气有限公司 | Has the senile experiment device that dual-temperature detects and controls function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170202158A1 (en) * | 2016-01-20 | 2017-07-20 | Eric Kochman | Electrically heated plant growth container |
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|---|---|---|---|---|
| CN203432076U (en) * | 2013-08-26 | 2014-02-12 | 苏州明志科技有限公司 | Heater device of gas generator |
| CN104076232A (en) * | 2014-07-17 | 2014-10-01 | 国网上海市电力公司 | Transformer oil-paper insulation electricity-heating unite ageing test device |
| CN206515425U (en) * | 2016-09-23 | 2017-09-22 | 北京三清互联科技有限公司 | High-tension transformer insulate and degradation failure diagnostic device |
| CN207730885U (en) * | 2018-01-25 | 2018-08-14 | 广东中鹏电气有限公司 | Has the senile experiment device that dual-temperature detects and controls function |
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