CN111830075A - A kind of insulating oil aging test device and test method - Google Patents

Abstract

The invention discloses an insulating oil aging test device and a test method, which comprises a box body, wherein a test mechanism is arranged on the inner side wall of the box body, a guide mechanism for guiding insulating oil to circularly flow in the test mechanism is arranged on the test mechanism, the operation of simultaneously injecting liquid with different contents into a plurality of oil storage chambers can be realized through a mist bag and an electric push rod, the injected liquid and oil can be fully mixed through the guide mechanism during injection, the arrangement of the oil storage chambers can simulate aging comparison tests of applying high temperature and liquid with different contents to the insulating oil in a transformer, and multi-region quantitative oil aging detection can be automatically carried out in the same time period during the test, namely quantitative insulating oil with liquid with different contents can be automatically taken out from the oil storage chambers at each time period simultaneously, so that the insulating oil aging test detection can be carried out on each time period in different states in the transformer in a targeted manner, so that the test results are more reliable.

Description

A kind of insulating oil aging test device and test method

technical field

The invention relates to the field of insulating oil testing, in particular to an insulating oil aging testing device and a testing method.

Background technique

Power equipment mainly includes two categories: power generation equipment and power supply equipment. Power generation equipment is mainly power station boilers, steam turbines, gas turbines, water turbines, generators, transformers, etc. Among them, transformers are more common in daily life, and insulating oil is often used in transformers.

In the long-term use process, the insulating oil in the transformer is prone to aging, and the main reasons for the aging of the insulating oil are temperature and humidity (that is, a small amount of water has penetrated into the insulating oil), etc. At this time, the staff will age through the insulating oil. Experiment to study the aging law of insulating oil. At present, there are mainly the following methods for aging test of insulating oil. Aging test of trace water, combined electric and heat aging test under the action of electric-heat combined stress, etc.

However, the test device in the prior art can only perform one test at a time during the use process. For example, the aging test in which a trace amount of water is added to the oil at a relatively high temperature requires the addition of water during the test. If a large amount of water is directly put in, the experiment will lack comparative data and the reliability of the final data will be unreliable. However, if it is divided into multiple experiments, the working cycle will be long, and due to oil and Water is not fused, and if it is added improperly, it is easy for the water and liquid to accumulate together, which will affect the test data.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an insulating oil aging test device and a test method, so as to solve the problem that in the prior art, when a trace amount of water is added to the oil at a relatively high temperature in the prior art, the test process needs to be sensitive to water. The addition amount is adjusted. If a large amount of water is directly put in, the experiment will lack comparative data and the reliability of the final data will be unreliable. However, if it is divided into multiple experiments, the working cycle will be long, and the oil will be added during the addition. It does not mix with water. If it is added improperly, it will easily cause technical problems that the water and liquid will accumulate together.

In order to solve the above-mentioned technical problems, the present invention specifically provides the following technical solutions:

An insulating oil aging test device, comprising a box body, a test mechanism is installed on the inner side wall of the box body, a detector is installed on the test mechanism, and a guide mechanism for guiding the circulating flow of insulating oil in the test mechanism ;

The test mechanism includes a plurality of oil storage chambers arranged on the inner side wall of the box body, the oil storage chambers are arranged in a ring shape, a temperature control rod is installed in the oil storage chamber, and the oil storage chamber is installed in the oil storage chamber. One end near the bottom of the box is connected with a return pipe, and one end of the return pipe close to the oil storage chamber is installed with a timing solenoid valve for realizing the timing and quantitative extraction of insulating oil samples, and the timing solenoid valve is sealed with the detector; One end of the return pipe away from the timing solenoid valve is communicated with the top end sidewall of the oil storage chamber;

The guiding mechanism is installed on the side wall of the end of the return pipe away from the timing solenoid valve, and a liquid injection for injecting liquids of different contents into the plurality of oil storage chambers is installed at the central position of the plurality of oil storage chambers a driver, the liquid injection driver is connected with the guide mechanism;

The liquid injection driver includes a fixed sleeve connected to the side wall of the return pipe. The side of the fixed sleeve away from the bottom of the box body is provided with a mist liquid bag for controlling the liquid to fully enter the oil storage chamber. The side wall of the return pipe is connected with the return pipe; the side of the fixed sleeve close to the bottom of the box is installed with an electric push rod for pulling the guiding mechanism up and down, and the output end side wall of the electric push rod is installed effectively The movable pressing block is used for squeezing the mist liquid bag, and the movable pressing block is connected with the mist liquid bag.

Optionally, the mist liquid bag includes a bag body installation block connected to the inner side wall of the fixed sleeve, a fixed bag body is installed on the surface of the bag body installation block, and a liquid storage bag is installed in the fixed bag body, A plurality of bladder seals are arranged at equal intervals in the liquid storage bladder, the bladder seals divide the liquid storage bladder into a plurality of liquid storage chambers, and the liquid storage bladder is close to the backflow One side surface of the pipe is installed with a liquid injection column that penetrates into the return pipe;

A plurality of stepped ring platforms are installed on the surface of the fixed bag body, and the longitudinal section of the movable pressing block is a right-angled trapezoid structure.

Optionally, the return pipe includes a liquid inlet column connected to the bottom end of the oil storage chamber, and a suction pipe is installed at one end of the liquid inlet column away from the oil storage chamber, and the suction pipe is far from the inlet. One end of the liquid column is installed with an introduction pipe communicating with the oil storage chamber, and the side wall of the introduction pipe is connected with the guide mechanism;

The inner wall of the suction pipe is provided with an atomization tank at the position corresponding to the liquid injection column, and the liquid injection column is inserted in the atomization tank and communicated with the suction pipe;

The liquid inlet column is provided with an inlet connecting groove with an inverted V-shaped longitudinal section, and one end of the liquid inlet column close to the oil storage chamber is provided with a tiny suction hole communicating with the inlet connecting groove.

Optionally, a sampling port is opened at a position corresponding to the inner wall of the return pipe and the timing solenoid valve, and the timing solenoid valve is inserted in the sampling port;

The inner diameter of the suction pipe is smaller than the inner diameter of the introduction pipe.

Optionally, the guiding mechanism includes a sealing sleeve that penetrates the side wall of the introduction pipe and is sealedly connected, a pneumatic piston for adjusting the air pressure in the suction pipe is installed in the sealing sleeve, and an end of the pneumatic piston away from the introduction pipe is installed. A pull rod is connected with the electric push rod at one end of the pull rod away from the pneumatic piston.

Optionally, the capsule sealing strip includes a sealing rubber strip connected to the inner wall of one side of the liquid storage cavity, the sealing rubber strip is provided with a sealing groove, and the sealing groove is provided with a sealing groove. A press seal connected to the inner wall of the other side of the liquid storage chamber;

The inner wall of the liquid storage cavity is provided with a plurality of atomization through holes at positions corresponding to the liquid injection column, and the liquid injection column is inserted in the atomization through holes;

The pressing seal is inserted into the sealing groove to seal and separate the adjacent liquid storage chambers.

Optionally, a liquid guide bar is installed on the end of the liquid storage bag cylinder, which penetrates the fixed bag to the outside, the liquid guide bar is provided with a perfusion square hole, and a perfusion square hole is installed in the perfusion square hole for filtering and filling. The filter cotton for the liquid entering the liquid storage cavity, and the liquid guide strip is flat.

Optionally, an air blowing bag is installed at one end of the liquid storage bag away from the liquid guide bar, and an air removal pipe whose end is communicated with the detector is installed on the blowing bag. A filter hole block is installed in the miscellaneous gas pipe, and a gas blocking sheet is installed on the surface of the filter hole block on the side close to the detector.

Optionally, the detector includes a detection cylinder connected to the timing solenoid valve, a Coulomb electrolysis column and a high-frequency discharge column are installed in the detection cylinder, and the inner wall of one end of the detection cylinder away from the timing solenoid valve is sealed and connected with a movable cylinder. A rubber sleeve, a movable sealing column is connected through the movable rubber sleeve, a pushing air sleeve is installed at one end of the movable sealing column away from the timing solenoid valve, and a spiral air column is connected to the pushing air sleeve, and the pushing air A second branch pipe is connected to the sleeve, and a first branch pipe is connected to the top side wall of the detection cylinder.

The present invention also provides an insulating oil aging test method, which is realized based on the above-mentioned insulating oil aging test device, and includes the following steps:

The electric push rod drives the guide mechanism and the movable pressing block to reciprocate, so that the insulating oil in the oil storage chamber periodically flows into the return pipe and into the oil storage chamber again;

The output end of the movable electric push rod drives the movable pressing block to reciprocately squeeze the mist liquid sacs, so as to fully press the liquid in the multiple mist liquid sacs into the corresponding oil storage chambers;

Through the timing solenoid valve, the insulating oil in the plurality of oil storage chambers is injected into the corresponding detectors within the same time period to perform the detection action;

After the detector is filled with oil, the timing solenoid valve is automatically closed. At the same time, by comparing the data obtained by the detector for multiple detections, the aging law of insulating oil in different oil storage chambers with different contents of liquid in each time period is obtained.

Compared with the prior art, the present invention has the following beneficial effects:

The invention can realize the operation of simultaneously injecting liquids of different contents into multiple oil storage chambers through the mist liquid bag and the electric push rod, and can fully mix the injected liquid and the oil through the guiding mechanism during injection, so as to reduce the pressure The test period can also avoid the occurrence of liquid accumulation, and the setting of multiple oil storage chambers can simulate the aging comparison test of applying high temperature to the insulating oil in the transformer and different contents of liquid, and the reliability of the comparison data is relatively high. During the test, it can automatically perform multi-region quantitative oil aging detection in the same time period, that is, automatically take out quantitative insulating oil with different contents of liquid from multiple oil storage chambers at each time period. In order to perform the aging test data detection operation, this setting can target the insulation oil aging test detection for each time period in the transformer under different states, so as to make the test results more reliable.

Description of drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that are required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, other implementation drawings can also be obtained according to the extension of the drawings provided without creative efforts.

1 is a schematic diagram of the overall structure of an insulating oil aging test device provided by an embodiment of the present invention;

2 is a top view of a test mechanism in an insulating oil aging test device according to an embodiment of the present invention;

3 is a schematic structural diagram of a mist liquid bag in an insulating oil aging test device according to an embodiment of the present invention;

4 is a schematic structural diagram of a return pipe in an insulating oil aging test device according to an embodiment of the present invention;

5 is a schematic structural diagram of a detector in an insulating oil aging test device according to an embodiment of the present invention.

The symbols in the figure are as follows:

1-box body; 2-test mechanism; 3-guidance mechanism; 4-detector; 5-liquid injection driver; 6-mist liquid bag; 7-timing solenoid valve; 8-return pipe;

201-Oil storage room; 202-Temperature control rod;

301-seal sleeve; 302-pneumatic piston; 303-pull rod;

401-detection cylinder; 402-coulomb electrolysis column; 403-high frequency discharge column; 404-active rubber sleeve; 405-active sealing column; 406-push air sleeve; 407-spiral air column; 408-second branch pipe; first in charge;

501-fixed sleeve; 502-electric push rod; 503-active pressure block;

601-Balloon installation block; 602-Fixed capsule; 603-Reservoir capsule; 604-Balloon sealing strip; 605-Reservoir cavity; 606-Injection column; 607-Step ring platform; 608-Blowout Capsule; 609-purging trachea; 610-filter block; 611-air blocking sheet;

6031-liquid guide bar; 6032-perfusion square hole; 6033-filter cotton;

6041-Sealing strip; 6042-Sealing groove; 6043-Press seal; 6044-Atomization through hole;

801-Sampling port; 802-Micro suction hole; 803-Inlet column; 804-Suction tube; 805-Introduction tube; 806-Atomization tank;

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in FIG. 1 and FIG. 2, the present invention provides an insulating oil aging test device, comprising a box body 1, a test mechanism 2 is installed on the inner side wall of the box body 1, a detector 4 is installed on the test mechanism 2, and A guide mechanism 3 for guiding the circulating flow of insulating oil in the test mechanism 2 .

The test mechanism 2 includes a plurality of oil storage chambers 201 arranged on the inner side wall of the box body 1. The oil storage chambers 201 are arranged in a ring shape, and a temperature control rod 202 is installed in the oil storage chamber 201. The setting of the temperature control rod 202 is mainly It is used to control the temperature of the insulating oil in the oil storage chamber 201, and multiple heating rods can be selected to be heated with a thermostat.

A return pipe 8 is connected to one end of the oil storage chamber 201 near the bottom of the box 1 . The return pipe 8 is arranged to make the insulating oil flow, so as to further conform to the state of the insulating oil in the transformer.

The end of the return pipe 8 close to the oil storage chamber 201 is installed with a timing solenoid valve 7 for realizing the timing and quantitative extraction of insulating oil samples. The timing solenoid valve 7 is a common solenoid valve with timing opening and closing functions on the market. The timing solenoid valve 7 It is sealingly connected with the detector 4 ; the end of the return pipe 8 away from the timing solenoid valve 7 is communicated with the top end sidewall of the oil storage chamber 201 .

The guide mechanism 3 is installed on the side wall of the end of the return pipe 8 away from the timing solenoid valve 7 , and a liquid injection driver 5 for injecting liquids of different contents into the plurality of oil storage chambers 201 is installed at the central position of the plurality of oil storage chambers 201 , the liquid injection driver 5 is connected to the guide mechanism 3 .

The liquid injection driver 5 includes a fixed sleeve 501 connected to the side wall of the return pipe 8. The side of the fixed sleeve 501 away from the bottom of the box body 1 is provided with a mist liquid bag 6 for controlling the liquid to fully enter the oil storage chamber 201. The mist liquid bag 6 runs through the side wall of the return pipe 8 and communicates with the return pipe 8; the side of the fixed sleeve 501 close to the bottom of the box 1 is installed with an electric push rod 502 for pulling the guide mechanism 3 to move up and down, and the output end side wall of the electric push rod 502 is installed A movable pressing block 503 for squeezing the mist liquid bag 6 is installed, and the movable pressing block 503 is connected with the mist liquid bag 6 .

The electric push rod 502 drives the guide mechanism 3 and the movable pressing block 503 to reciprocate, so that the insulating oil in the oil storage chamber 201 periodically flows into the return pipe 8 and into the oil storage chamber 201 again. At the same time, the output of the movable electric push rod 502 The end drives the movable pressing block 503 to reciprocately squeeze the mist liquid sacs 6, so that the liquid in the multiple mist liquid sacs 6 can be fully pressed into the corresponding oil storage chambers 201, and then the multiple oil storage chambers 201 are forced into the multiple oil storage chambers 201 through the timing solenoid valve 7. The insulating oil is injected into the corresponding detector 4 in the same time period to perform the detection action, and the timing solenoid valve 7 is automatically closed after the detector 4 is filled with oil. The aging law of insulating oils in different oil storage chambers 201 in different time periods when they contain different contents of liquid.

When the aging test device is in use, different contents of liquid can be injected into different oil storage chambers 201 at the same time, so that the test can be compared and the reliability of test data can be improved. After the liquid is injected, the timing solenoid valve 7 can be switched on and off regularly. , so that the aging of the oil in each time period during the test can be detected by the detector 4, so that the insulation oil aging test can be detected for each time period under different states in the transformer, so that the test results are more reliable.

When the aging test device is in use, the electric push rod 502 can be directly activated to simultaneously drive the guide mechanism 3 and the movable pressing block 503 to reciprocate together, so that the insulating oil in the oil storage chamber 201 periodically flows into the return pipe 8 and It flows into the oil storage chamber 201 again, and at the same time, the output end of the movable electric push rod 502 drives the movable pressing block 503 to reciprocately squeeze the mist liquid sacs 6 , so as to fully press the liquid in the multiple mist liquid sacs 6 into the corresponding return pipes 8 , and mix the injected liquid with the oil through the guiding mechanism 3 so as to fully enter the oil storage chamber 201. This setting can prevent the liquid from accumulating together. Liquids of different contents can be injected into the mist liquid bag 6. After being injected into the oil storage chambers 201, the timing solenoid valve 7 on each oil storage chamber 201 will inject the insulating oil in the plurality of oil storage chambers 201 into the corresponding detectors 4 in the same period of time to perform the detection action, and After the detector 4 is filled with oil, the timing solenoid valve 7 is automatically closed, and at the same time, by comparing the data obtained by the detector 4 for multiple detections, it is obtained that the insulating oil in the different oil storage chambers 201 in each time period contains different contents of liquid. the aging law.

As shown in FIG. 1 and FIG. 3 , the mist liquid bag 6 includes a bag body mounting block 601 connected to the inner side wall of the fixing sleeve 501 , a fixed bag body 602 is mounted on the surface of the bag body mounting block 601 , and a fixed bag body 602 is installed in the The liquid storage bag 603 is provided with a plurality of bag spacers 604 at equal intervals in the liquid storage bag 603. The liquid storage bag 603 is divided into a plurality of liquid storage cavities 605 by the bag spacers 604. A liquid injection column 606 that penetrates into the return pipe 8 is installed on the side surface of the liquid bladder cylinder 603 close to the return pipe 8. The liquid injection column 606 can be provided with a filter block and a rubber sheet with a spring mounted on the surface. In the case of daily water injection , the rubber sheet will not be pushed, and will be pushed only when the liquid storage bag 603 is subjected to an external force, so that the spring is pulled, so that the liquid flows away between the rubber sheet and the filter block.

In this embodiment, the liquid can be selected as water.

The mist liquid bag 6 can be injected with different contents of liquid, which can be fully atomized during injection, so that the oil will not gather together, and the arrangement of multiple mist liquid bags 6 can fully simulate different water seepage conditions in the transformer. When the liquid is filled, the liquid is directly injected into the liquid storage bag 603. Since there are multiple liquid storage bags 603, in order to allow the liquid to be injected with different contents, only the liquid is injected into the liquid storage bag 603. When the liquid enters the liquid storage bag After filling the cylinder 603, the first liquid storage chamber 605 will be swollen first. At this time, if multiple liquid storage cylinders 603 are to maintain different contents, the liquid in the first liquid storage cylinder 603 can be controlled to no longer increase. And continue to inject liquid into the remaining liquid storage bladders 603, so that the liquid continues to enter the first liquid storage chamber 605 in the remaining liquid storage bladders 603, and then the pressure in the first liquid storage chamber 605 will gradually increase, Until the balloon seal 604 in the area of the first liquid storage chamber 605 is pushed away, so that the second liquid storage chamber 605 is filled, and then the above-mentioned operations are continued until the liquid content in all the liquid storage bladders 603 reaches The liquid in the liquid storage chamber 605 will enter the oil storage chamber 201 only after the movable pressing block 503 is pressurized until the test is required.

As shown in FIG. 1 and FIG. 4 , the return pipe 8 includes a liquid inlet column 803 connected to the bottom end of the oil storage chamber 201 , and a suction pipe 804 is installed at one end of the liquid inlet column 803 away from the oil storage chamber 201 , and the suction pipe 804 is far away from the liquid inlet. One end of the column 803 is installed with an introduction pipe 805 that communicates with the oil storage chamber 201. The side wall of the introduction pipe 805 is connected to the guide mechanism 3, and the inner wall of the suction pipe 804 is provided with an atomization tank 806 at the position corresponding to the liquid injection column 606. The liquid column 606 is inserted into the atomization tank 806 and communicated with the suction pipe 804 . The liquid inlet column 803 is provided with an inlet connecting groove 807 whose longitudinal section is an inverted V-shaped structure. One end of the liquid inlet column 803 close to the oil storage chamber 201 is provided with a tiny suction hole 802 that communicates with the inlet connecting groove 807. The return pipe 8 A sampling port 801 is opened on the inner wall at a position corresponding to the timing solenoid valve 7 , and the timing solenoid valve 7 is inserted into the sampling port 801 .

The return pipe 8 is used to assist the circulation of the insulating oil, and at the same time, it can also fully mix the insulating oil and the liquid, so as to prevent the insulating oil from accumulating together. The guiding mechanism 3 will be driven, because the guiding mechanism 3 includes a sealing sleeve 301 which is sealedly connected to the side wall of the introduction pipe 805, and a pneumatic piston 302 for adjusting the air pressure in the suction pipe 804 is installed in the sealing sleeve 301, and the pneumatic piston 302 is far away from the introduction pipe. A pull rod 303 is installed on one surface of the 805 , and the end of the pull rod 303 away from the pneumatic piston 302 is connected with the electric push rod 502 .

Therefore, at this time, the movable electric push rod 502 will push and pull the pull rod 303 back and forth, and the movable pull rod 303 will pull the pneumatic piston 302 to make the pneumatic piston 302 move in the sealing sleeve 301. When the piston 302 moves downward, the pressure in the suction pipe 804 can be increased, and then the oil in the suction pipe 804 will be pushed into the oil storage chamber 201. The pressure will gradually decrease, so that the oil in the oil storage chamber 201 is drawn into the suction pipe 804, and then flows into the introduction pipe 805, so that the operation of oil circulation is realized. It can easily enter the inlet connecting groove 807, and the arrangement of the suction tube 804 and the tiny suction hole 802 can function as a syringe.

When the oil is circulating, once the liquid passes through the atomizing tank 806 , the oil will mix and drive the water to pass through the introduction pipe 805 together.

As shown in FIG. 1 and FIG. 3 , the sealing strip 604 of the capsule body includes a sealing rubber strip 6041 connected to the inner wall of one side of the liquid storage chamber 605 . There is a pressing seal 6043 connected to the inner wall of the other side of the liquid storage chamber 605, and a plurality of atomization through holes 6044 are opened on the inner wall of the liquid storage chamber 605 corresponding to the liquid injection column 606, and the liquid injection column 606 is inserted in the atomization In the through hole 6044; the pressing seal 6043 is inserted into the sealing groove 6042 to seal and separate the adjacent liquid storage chambers 605.

The capsule sealing strip 604 is set in this way to seal and isolate the liquid storage cavity 605. After the liquid enters the first liquid storage cavity 605 and fills it up, if the liquid continues to be injected, the first liquid storage cavity 605 will be removed. The liquid storage chamber 605 expands, and after the first liquid storage chamber 605 expands, the pressing seal 6043 is pushed away from the sealing groove 6042, so that the liquid enters the second liquid storage chamber 605, but the second storage When the liquid chamber 605 is filled, the press seal 6043 in it will also seal the second liquid storage chamber 605, so that the liquid will not enter the third liquid storage chamber 605. There is a stepped ring platform 607, and the longitudinal section of the movable pressing block 503 is a right-angled trapezoid structure. Therefore, when the electric push rod 502 moves, it will drive the movable pressing block 503 to move together, and then the movable movable pressing block 503 will slide along the stepped ring platform 607. , and push the stepped ring platform 607 to make the liquid storage bag 603 pressurized, that is, the liquid in the liquid storage cavity 605 will enter the liquid injection column 606 through the atomization through hole 6044, and then the liquid will be fully mixed with the oil, so that the aging Test efficiency is higher.

As shown in FIG. 1 and FIG. 3 , a liquid guide bar 6031 is installed at the end of the liquid storage bag cylinder 603 to penetrate through the fixed bag body 602 to the outside. A filter cotton 6033 for filtering the liquid poured into the liquid storage chamber 605 is installed, and the liquid guide bar 6031 is flat.

When the liquid needs to enter the liquid storage bag 603, only the liquid is used to enter the filling square hole 6032. When the liquid enters, it will be filtered by the filter cotton 6033, so that the insulating oil is only mixed and contacted with the liquid.

As shown in FIG. 1 and FIG. 3 , one end of the liquid storage bag cylinder 603 away from the liquid guide bar 6031 is installed with an impurity blowing bag cylinder 608 , and an impurity removing air pipe 609 whose end is communicated with the detector 4 is installed on the impurity blowing bag cylinder 608 . , a filter hole block 610 is installed in the impurity-removing gas pipe 609 , and a gas blocking sheet 611 is installed on the surface of the filter hole block 610 near the detector 4 .

When the movable pressing block 503 slides along the stepped ring platform 607, it will not only compress the liquid storage bag 603, but also the blowing bag 608. When the blowing bag 608 is compressed, the gas in the blowing bag 608 will be compressed. Enter the impurity removal pipe 609, so that the gas passes through the holes on the filter hole block 610, and pushes the gas blocking sheet 611, so that the gas passes through the gap between the gas blocking sheet 611 and the filter hole block 610, thereby directly entering the first branch pipe 409 and the first branch pipe 409. In the second branch pipe 408.

As shown in FIG. 1 and FIG. 5 , the detector 4 includes a detection cylinder 401 connected to the timing solenoid valve 7 , a Coulomb electrolysis column 402 and a high-frequency discharge column 403 are installed in the detection cylinder 401 , and the detection cylinder 401 is far away from the timing solenoid valve 7 A movable rubber sleeve 404 is sealingly connected to the inner wall of one end, and a movable sealing column 405 is connected through the movable rubber sleeve 404. A push air sleeve 406 is installed on the end of the movable sealing column 405 away from the timing solenoid valve 7, and the push air sleeve 406 is connected with a Spiral air column 407, push air jacket 406 is connected with a second branch pipe 408, the top side wall of detection cylinder 401 is connected with a first branch pipe 409, the first branch pipe 409 and the second branch pipe 408 are at one end away from the detection cylinder 401 with the removal of Miscellaneous gas pipe 609 is connected.

When the user does not need to perform test data detection, the user only needs to open the spiral air column 407. At this time, the gas flowing out of the air blowing bag 608 will pass through the air removal pipe 609 and the second branch pipe 408 in turn, and finally enter the push air jacket 406. , and then push the gas in the gas jacket 406 to be discharged through the spiral gas column 407, and at the same time, the gas injected into the impurity removal gas pipe 609 will also enter the first branch pipe 409, and then the gas in the first branch pipe 409 will enter the detection tube 401, so that The oil adhering to the inner wall of the detection cylinder 401 will be blown away to prevent subsequent detection data from being affected.

When the user needs to perform test data detection, the spiral air column 407 can be directly rotated, so that the gas flowing out of the air blowing bag 608 will directly pass through the air removal pipe 609 and the second branch pipe 408, and finally enter the push air jacket 406, The pushing air sleeve 406 is gradually expanded, and then pushing the air sleeve 406 will push one end of the movable sealing column 405 to move the movable sealing column 405 in an I-shape, so that the end of the movable sealing column 405 away from the pushing air sleeve 406 will gradually press the movable sealing column 405. The opening of the rubber sleeve 404 is a hole for sliding with the movable sealing column 405 and the movable rubber sleeve 404. After that, the oil in the timing solenoid valve 7 will directly enter the detection cylinder 401, and then the Coulomb electrolysis column 402 and the high-frequency discharge column 403 can perform the detection operation. When the detection operation is completed, the spiral air column 407 can be rotated to discharge the gas in the push air jacket 406, so that the oil in the detection cylinder 401 will be discharged through the hole at the movable sealing column 405.

In this embodiment, when the detector 4 performs detection, the electric push rod 502 will also continue to move, that is, the oil is always circulating.

Based on the foregoing embodiments, the present embodiment provides an insulating oil aging test method, which includes the following steps:

The electric push rod 502 drives the guide mechanism 3 and the movable pressing block 503 to reciprocate, so that the insulating oil in the oil storage chamber 201 periodically flows into the return pipe 8 and into the oil storage chamber 201 again;

The output end of the movable electric push rod 502 drives the movable pressing block 503 to reciprocately squeeze the mist liquid sacs 6 to fully press the liquid in the multiple mist liquid sacs 6 into the corresponding oil storage chambers 201;

The insulating oil in the plurality of oil storage chambers 201 is injected into the corresponding detector 4 within the same time period through the timing solenoid valve 7 to perform the detection action;

After the detector 4 is filled with oil, the timing solenoid valve 7 is automatically closed, and at the same time, by comparing the data obtained by the detector 4 for multiple detections, it is obtained that the insulating oil in the different oil storage chambers 201 in each time period contains different contents of liquid. the aging law.

The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present application.

Claims (10)

1. An insulating oil aging test device, characterized in that it comprises a box body (1), a test mechanism (2) is installed on the inner side wall of the box body (1), and a test mechanism (2) is installed with a detector (4), and a guide mechanism (3) for guiding the circulating flow of insulating oil in the test mechanism (2); The test mechanism (2) includes a plurality of oil storage chambers (201) arranged on the inner side wall of the box body (1), the oil storage chambers (201) are annularly arranged, and the oil storage chambers (201) are arranged in a ring shape. A temperature control rod (202) is installed in 201), and a return pipe (8) is connected to one end of the oil storage chamber (201) near the bottom of the box (1), and the return pipe (8) is close to the oil storage chamber One end of (201) is installed with a timing solenoid valve (7) for realizing the timing and quantitative extraction of insulating oil samples, the timing solenoid valve (7) is sealingly connected with the detector (4); the return pipe (8) is far away from One end of the timing solenoid valve (7) is communicated with the top side wall of the oil storage chamber (201); The guide mechanism (3) is installed on the side wall of the end of the return pipe (8) away from the timing solenoid valve (7). Liquid injection drivers (5) for injecting liquids of different contents into the oil storage chambers (201), the liquid injection drivers (5) are connected to the guide mechanism (3); The liquid injection driver (5) includes a fixing sleeve (501) connected to the side wall of the return pipe (8), and the side of the fixing sleeve (501) away from the bottom of the box body (1) is provided with a device for controlling the sufficient entry of liquid. The mist liquid bag (6) in the oil storage chamber (201), the mist liquid bag (6) penetrates the side wall of the return pipe (8) and communicates with the return pipe (8); the fixing sleeve ( 501) An electric push rod (502) for pulling the guide mechanism (3) to move up and down is installed on one side near the bottom of the box body (1), and a side wall of the output end of the electric push rod (502) is installed with a side wall for squeezing the mist A movable pressing block (503) of the liquid bladder (6), the movable pressing block (503) is connected with the mist liquid bladder (6). 2 . The insulating oil aging test device according to claim 1 , wherein the mist liquid bag ( 6 ) comprises a bag body mounting block ( 601 ) connected to the inner side wall of the fixing sleeve ( 501 ), 2 . A fixed bladder (602) is mounted on the surface of the bladder mounting block (601), and a liquid storage bladder (603) is installed in the fixed bladder (602), and in the liquid storage bladder (603) A plurality of bladder packing strips (604) are arranged at equal intervals, and the bladder packing strips (604) divide the liquid storage bladder (603) into multiple liquid storage cavities (605). A liquid injection column (606) penetrating into the return pipe (8) is installed on the surface of one side of the bladder (603) close to the return pipe (8); A plurality of stepped ring platforms (607) are installed on the surface of the fixed bag body (602), and the longitudinal section of the movable pressing block (503) is a right-angled trapezoid structure. 3 . The insulating oil aging test device according to claim 2 , wherein the return pipe ( 8 ) comprises a liquid inlet column ( 803 ) connected to the bottom end of the oil storage chamber ( 201 ), 3 . A suction pipe (804) is installed at one end of the liquid inlet column (803) away from the oil storage chamber (201), and an end of the suction pipe (804) away from the liquid inlet column (803) is installed with an oil storage pipe. an introduction pipe (805) communicating with the chamber (201), the side wall of the introduction pipe (805) is connected with the guide mechanism (3); An atomization tank (806) is opened at the position corresponding to the inner wall of the suction pipe (804) and the liquid injection column (606), and the liquid injection column (606) is inserted into the atomization tank (806) and communicated with the suction pipe (804); The liquid inlet column (803) is provided with an inlet connecting groove (807) whose longitudinal section is an inverted V-shaped structure, and one end of the liquid inlet column (803) close to the oil storage chamber (201) is provided with a inlet connecting groove (807). The tiny suction holes (802) communicated with the grooves (807). 4. An insulating oil aging test device according to claim 3, characterized in that a sampling port (801) is opened at the position corresponding to the inner wall of the return pipe (8) and the timing solenoid valve (7), and the timing The solenoid valve (7) is inserted in the sampling port (801); The inner diameter of the suction pipe (804) is smaller than the inner diameter of the introduction pipe (805). 5. An insulating oil aging test device according to claim 3, characterized in that, the guiding mechanism (3) comprises a sealing sleeve (301) penetrating the side wall of the introduction pipe (805) and sealingly connected, so A pneumatic piston (302) for adjusting the air pressure in the suction pipe (804) is installed in the sealing sleeve (301), and a pulling rod (303) is installed at one end of the pneumatic piston (302) away from the introduction pipe (805). One end of the pulling rod (303) away from the pneumatic piston (302) is connected with the electric push rod (502). 6. An insulation oil aging test device according to claim 2, characterized in that, the bladder sealing strip (604) comprises a sealant connected to the inner wall of one side of the liquid storage cavity (605) strip (6041), the sealing strip (6041) is provided with a sealing groove (6042), and the sealing groove (6042) is provided with a connection with the inner wall of the other side of the liquid storage chamber (605) The press seal (6043); A plurality of atomization through holes (6044) are opened at positions corresponding to the inner wall of the liquid storage chamber (605) and the liquid injection column (606), and the liquid injection column (606) is inserted into the atomization through holes (6044); The pressing seal (6043) is inserted into the sealing groove (6042) to seal and separate the adjacent liquid storage chambers (605). 7. An insulating oil aging test device according to claim 2, characterized in that, a liquid guide (6031) that penetrates the fixed bladder (602) to the outside is installed at the end of the liquid storage bag (603) ), a perfusion square hole (6032) is opened in the liquid guide strip (6031), and a filter impurity filter for filtering the liquid poured into the liquid storage cavity (605) is installed in the perfusion square hole (6032). Cotton (6033), the liquid guide strip (6031) is flat. 8. An insulating oil aging test device according to claim 2, characterized in that a blowing bag (608) is installed at one end of the liquid storage bag (603) away from the liquid guide (6031), An impurity-removing air pipe (609) whose end is communicated with the detector (4) is installed on the impurity blowing bag cylinder (608), and a filter hole block (610) is installed in the impurity-removing air pipe (609), A gas blocking sheet (611) is installed on the side surface of the filter block (610) close to the detector (4). 9 . The insulation oil aging test device according to claim 8 , wherein the detector ( 4 ) comprises a detection cylinder ( 401 ) connected to the timing solenoid valve ( 7 ), and in the detection cylinder ( 9 ) A Coulomb electrolysis column (402) and a high-frequency discharge column (403) are installed in 401), and a movable rubber sleeve (404) is sealed and connected to the inner wall of one end of the detection cylinder (401) away from the timing solenoid valve (7). A movable sealing post (405) is penetratingly connected to the rubber sleeve (404), and a pushing air sleeve (406) is installed at one end of the movable sealing post (405) away from the timing solenoid valve (7). ) is connected with a spiral air column (407), the pushing air jacket (406) is connected with a second branch pipe (408), and the top side wall of the detection cylinder (401) is connected with a first branch pipe (409), so The first branch pipe (409) and the second branch pipe (408) are both connected to the impurity removal gas pipe (609) at one end away from the detection cylinder (401). 10. An insulating oil aging test method, characterized in that, realized based on the insulating oil aging test device as claimed in any one of claims 1 to 9, comprising the steps of: The electric push rod (502) drives the guide mechanism (3) and the movable pressing block (503) to reciprocate, so that the insulating oil in the oil storage chamber (201) periodically flows into the return pipe (8) and into the oil storage again room(201); The output end of the movable electric push rod (502) drives the movable pressing block (503) to reciprocately squeeze the mist liquid sacs (6), and fully press the liquid in the multiple mist liquid sacs (6) into the corresponding oil storage chambers (6). 201); The insulating oil in the plurality of oil storage chambers (201) is injected into the corresponding detectors (4) within the same time period through the timing solenoid valve (7) to perform the detection action; After the detector (4) is filled with oil, the timing solenoid valve (7) is automatically closed, and at the same time, by comparing the data obtained by the detector (4) for multiple detections, the values in the different oil storage chambers (201) in each time period are obtained. The aging law of insulating oil with different contents of liquid.

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