CN210323202U - Oil dielectric strength tester - Google Patents
Oil dielectric strength tester Download PDFInfo
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- CN210323202U CN210323202U CN201920722327.8U CN201920722327U CN210323202U CN 210323202 U CN210323202 U CN 210323202U CN 201920722327 U CN201920722327 U CN 201920722327U CN 210323202 U CN210323202 U CN 210323202U
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- oil
- cup
- dielectric strength
- oil cup
- strength tester
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Abstract
The utility model discloses an oil dielectric strength tester, including sealing the oil cup and the sealed withstand voltage test probe that sets up in sealing the oil cup, seal the oiling mouth of oil cup and be used for pouring into the oiling subassembly pipe connector of the oil body that awaits measuring, seal the leakage fluid dram of oil cup and be used for retrieving the recovery subassembly pipe connector of the oil body that awaits measuring, withstand voltage test probe still with withstand voltage test system electric connection, seal the cleaning gap of oil cup and be used for pouring into the cleaning assembly pipe connector of sanitizer, the bottom of sealing the oil cup still is equipped with the stirring leaf. The utility model can realize the automatic filling and automatic recovery of the oil body to be tested through the oil injection component and the recovery component, and can effectively avoid the condition that the test result is inaccurate as the oil body to be tested is contacted with water in the pressure resistance test process; meanwhile, the cleaning assembly can be used for periodically cleaning the closed oil cup, so that the cleanliness of the closed oil cup is ensured, and the test precision can be improved.
Description
Technical Field
The utility model relates to an insulating oil dielectric strength test technical field, especially an oil dielectric strength tester.
Background
In recent years, with the rapid development of the electric power industry in China and the improvement of the technical equipment level, the power grid management mode is undergoing qualitative changes, equipment state maintenance, unattended operation of a transformer substation and other concepts, so that the power grid management mode has a more efficient, safer and more economic power grid management mode. In recent years, accidents caused by internal faults of transformers are more, wherein overheating and winding local discharge faults account for about 70%, and are the largest factors influencing safe operation of the transformers, so that the insulating oil needs to be subjected to a plurality of routine experiments regularly, and whether various indexes such as the aging degree and the insulating degree of the insulating oil meet requirements or not is judged according to various test data. The dielectric strength of the insulating oil is a crucial item in all indexes, but the existing tester does not protect the oil body to be tested completely, and the oil body to be tested is easily polluted, so that the test result is influenced, and the misjudgment is caused.
Disclosure of Invention
In order to solve the technical problem, the utility model provides an oily dielectric strength tester can protect the oil body that awaits measuring not contaminated in the test procedure.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides an oil dielectric strength tester, is including sealing the oil cup and the sealed withstand voltage test probe that sets up in sealing the oil cup, the oiling mouth and the oiling subassembly pipe joint that is used for pouring into the oil body that awaits measuring of sealing the oil cup, the leakage fluid dram that seals the oil cup with be used for retrieving the recovery subassembly pipe joint of the oil body that awaits measuring, withstand voltage test probe still with withstand voltage test system electric connection, the clean mouthful and the clean subassembly pipe joint that is used for pouring into the sanitizer of sealing the oil cup, the bottom of sealing the oil cup still is equipped with the stirring leaf.
Furthermore, the oiling subassembly is including oil inlet and the petroleum pump of pipe joint in proper order, the petroleum pump passes through pipeline and oiling mouth pipe joint.
Further, an oil delivery electromagnetic valve is arranged between the oil delivery pump and the oil delivery port, and a first electromagnetic valve is arranged between the oil inlet and the oil delivery pump.
Further, retrieve the subassembly including the oil-well pump, filter and the recovery jar of pipe joint in proper order, the oil-well pump passes through pipeline and leakage fluid dram pipe joint.
Further, an oil pumping electromagnetic valve is arranged between the oil well pump and the liquid outlet, and a second electromagnetic valve is arranged between the filter and the recovery tank.
Further, the cleaning assembly comprises a cleaning tank and a cleaning pump which are sequentially connected through a pipe, a third electromagnetic valve is further arranged between the cleaning pump and the cleaning port, and the cleaning tank is used for storing cleaning agents.
Further, withstand voltage test system includes control module, control module respectively with display module, voltage sampling module, high voltage direct current pulse generator and current sampling module electric connection still respectively with withstand voltage test probe electric connection.
Further, a hydraulic sensor is arranged inside the closed oil cup and is connected with the control module through an AD conversion module.
Further, still include the driving motor who is used for driving stirring leaf pivoted, driving motor passes through drive module and is connected with control module.
Further, the closed oil cup is also provided with a pressure relief opening, and a moisture-proof layer is further arranged in the pressure relief opening.
The utility model has the advantages that: the automatic filling and automatic recovery of the oil body to be tested can be realized through the oil injection assembly and the recovery assembly, and the condition that the test result is inaccurate due to the fact that the oil body to be tested is contacted with moisture in the pressure resistance test process can be effectively avoided; meanwhile, the cleaning assembly can be used for periodically cleaning the closed oil cup, so that the cleanliness of the closed oil cup is ensured, and the test precision can be improved.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a schematic structural view of a preferred embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a preferred embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the conception, specific structure and technical effects of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor are within the scope of the present invention.
Referring to fig. 1, as a preferred embodiment, an oil dielectric strength tester includes a sealed oil cup 11 and a pressure-resistant test probe 12 hermetically disposed in the sealed oil cup 11, an oil filling port of the sealed oil cup 11 is connected to an oil filling assembly for filling oil to be tested, a liquid discharge port of the sealed oil cup 11 is connected to a recovery assembly for recovering the oil to be tested, the pressure-resistant test probe 12 is further electrically connected to a pressure-resistant test system 41, a cleaning port of the sealed oil cup 11 is connected to a cleaning assembly for filling a cleaning agent, and a stirring blade 71 is further disposed at the bottom of the sealed oil cup 11.
Preferably, the oil injection assembly comprises an oil inlet 21 and an oil transfer pump 22 which are sequentially connected in a pipe mode, the oil transfer pump 22 is connected with the oil injection port in a pipe mode through a pipeline, and in order to ensure that an oil body to be detected can smoothly enter the closed oil cup 11, the oil injection port is formed in the top end of the closed oil cup 11.
Preferably, an oil delivery electromagnetic valve 23 is further arranged between the oil delivery pump 22 and the oil delivery port, and a first electromagnetic valve 24 is arranged between the oil inlet 21 and the oil delivery pump 22.
Preferably, the recovery assembly comprises an oil pump 31, a filter 32 and a recovery tank 33 which are sequentially connected in a pipe connection manner, the oil pump 31 is connected with the liquid discharge port in a pipe connection manner, in the pressure resistance test process, the oil body to be tested is contacted with oxygen under the action of heat and an electric field, and is gradually oxidized to generate various oxides, alcohol, aldehyde, acid and the like, and finally insoluble colloid and oil sludge are formed and precipitated. These acidic substances reduce the insulating property of the power distribution equipment, such as insulating oil in transformer equipment, and therefore a filter 32 is required to be disposed to filter the oil body to be tested, so as to ensure the purity of the oil body to be tested in the recovery tank 33, and the oil body to be tested can be recycled, wherein the filter 32 can be an oil filter commonly used in the power distribution equipment industry as the filter 32.
Preferably, an oil pumping solenoid valve 34 is further disposed between the oil pump 31 and the liquid discharge port, and a second solenoid valve 35 is disposed between the filter 32 and the recovery tank 33, wherein the liquid discharge port needs to be disposed at the bottom of the closed oil cup 11 in order to improve the liquid discharge effect.
Preferably, the cleaning assembly includes cleaning tank 51 and the clean pump 52 of pipe joint in proper order, still be equipped with third solenoid valve 53 between clean pump 52 and the clean mouth, cleaning tank 51 is used for depositing the sanitizer, the sanitizer can adopt chemical reagent such as absolute ethyl alcohol or petroleum ether, and in this embodiment, preferably adopt absolute ethyl alcohol, the greasy dirt that absolute ethyl alcohol can seal oil cup 11 and hold between the fingers dissolves, avoids the greasy dirt to glue on sealing oil cup 11, and absolute ethyl alcohol has volatility simultaneously, can make sealing oil cup 11 can not have liquid to remain, guarantees the utility model discloses repeatedly usable and detection accuracy degree utilize stirring leaf 71 to stir the sanitizer simultaneously, make the sanitizer rotate at a high speed, wash out sealing oil cup 11 inside, can further clear away the greasy dirt on sealing oil cup 11.
Preferably, referring to fig. 2, the voltage withstanding test system 41 includes a control module, the control module is electrically connected to the display module, the voltage sampling module, the high voltage dc pulse generator and the current sampling module, respectively, and the voltage sampling module, the high voltage dc pulse generator and the current sampling module are also electrically connected to the voltage withstanding test probe 12, respectively.
The control module comprises a single chip microcomputer, a power supply unit and a storage unit, wherein the storage unit is used for storing parameters such as a voltage value, a real-time current and a breakdown current obtained by each measurement; the display module comprises a display screen and an image processing unit which are electrically connected, and the input end of the image processing unit is connected with the single chip microcomputer and is used for displaying the measured parameter value and the high-voltage direct-current pulse test waveform map; the voltage sampling module is used for measuring real-time voltages at two ends of the voltage-withstanding test probe 12 in real time and feeding back the voltages to the single chip microcomputer in real time; the current sampling module is used for measuring a real-time current value passing through the voltage-withstanding test probes 12 and feeding back the real-time current value to the single chip microcomputer; the high-voltage direct-current pulse generator is used for providing a unipolar voltage pulse signal to the voltage withstanding test probe 12; the bar plate electrode of the probe part of the voltage-withstanding test probe 12 adopts a needle-plate electrode, specifically, a high-carbon stainless steel needle electrode and a plate electrode are adopted to form, and the gap can be adjusted as required, so that the applied direct-current pulse width and voltage value can realize the real-time monitoring of the gas to be tested, and the trend diagnosis can avoid the misinformation.
Preferably, a hydraulic sensor 13 is arranged inside the closed oil cup 11, the pressure resistance test system 41 further comprises an AD conversion module, the hydraulic sensor 13 is connected with the control module through the AD conversion module, the quality of the oil body to be tested entering the closed oil cup 11 can be accurately measured by arranging the hydraulic sensor 13, the volume of the closed oil cup 11 is certain, and the density of the oil body to be tested is known, so that the liquid level of the oil body to be tested can be known only by directly measuring the pressure of the oil body injected into the closed oil cup 11 to the bottom of the oil cup, the quality control of the oil body to be tested injected into the closed oil cup 11 is realized according to a liquid level control oil injection assembly, wherein the hydraulic sensor 13 is arranged at the bottom of the closed oil cup 11.
Preferably, the pressure resistance testing system 41 further comprises a driving motor 72 for driving the stirring blade 71 to rotate, the input end of the driving module is electrically connected with the control module, the output end of the driving module is electrically connected with the oil delivery pump 22, the oil delivery solenoid valve 23, the first solenoid valve 24, the oil well pump 31, the oil pumping solenoid valve 34, the second solenoid valve 35, the third solenoid valve 53, the cleaning pump 52 and the driving motor 72, and the control module drives each load through the driving module.
More specifically, in order to realize the individual driving of each load, the driving modules at least include a first driving module, a second driving module, a third driving module, a fourth driving module, a fifth driving module, a sixth driving module, a seventh driving module, an eighth driving module, and a ninth driving module; the output end of the first driving module is electrically connected with the oil transfer pump 22, and the input end of the first driving module is electrically connected with the single chip microcomputer; the output end of the second driving module is electrically connected with the oil delivery electromagnetic valve 23, and the input end of the second driving module is electrically connected with the single chip microcomputer; the output end of the third driving module is electrically connected with the first electromagnetic valve 24, and the input end of the third driving module is electrically connected with the single chip microcomputer; the output end of the fourth driving module is electrically connected with the oil well pump 31, and the input end of the fourth driving module is electrically connected with the single chip microcomputer; the output end of the fifth driving module is electrically connected with the oil pumping electromagnetic valve 34, and the input end of the fifth driving module is electrically connected with the single chip microcomputer; the output end of the sixth driving module is electrically connected with the second electromagnetic valve 35, and the input end of the sixth driving module is electrically connected with the single chip microcomputer; the output end of the seventh driving module is in electrical connection with the third electromagnetic valve 53, and the input end of the seventh driving module is in electrical connection with the single chip microcomputer; the output end of the eighth driving module is electrically connected with the cleaning pump 52, and the input end of the eighth driving module is electrically connected with the single chip microcomputer; the output end of the ninth driving module is electrically connected with the driving motor 72, and the input end of the ninth driving module is electrically connected with the single chip microcomputer.
Preferably, closed oil cup 11 still is equipped with pressure release mouth 61, still be equipped with dampproof course 62 in the pressure release mouth 61, set up pressure release mouth 61, can make the atmospheric pressure balance of closed oil cup 11, guarantee the injection and the discharge of the oil body that awaits measuring, set up dampproof course 62 simultaneously, dampproof course 62 can adopt moisture absorption silica gel, can avoid impurity and moisture in the air to get into the inside of closed oil cup 11 to can improve the degree of accuracy and the reliability of experimental data, pressure release mouth 61 locates the top of closed oil cup 11 and arranges one side of oiling mouth in.
The working principle is as follows: communicating an oil inlet 21 with an insulating oil pipeline of distribution equipment, opening a first electromagnetic valve 24, an oil delivery electromagnetic valve 23 and starting an oil delivery pump 22, ensuring that an oil pumping electromagnetic valve 34 and a third electromagnetic valve 53 are in a closed state, injecting insulating oil into a closed oil cup 11 through the oil delivery pump 22, simultaneously closing the first electromagnetic valve 24, the oil delivery electromagnetic valve 23 and the oil delivery pump 22 according to a numerical value detected by a hydraulic sensor 13 until night pressure in the closed oil cup 11 reaches a required measured value, starting a high-voltage direct current pulse generator, inputting a required voltage value, observing whether current can be detected through a display screen, if the current can be detected, proving that an oil body to be detected breaks down under the voltage, and if the current can not be detected, proving that the oil body to be detected can bear the voltage value; after the detection is finished, the second electromagnetic valve 35, the oil pumping electromagnetic valve 34 and the oil well pump 31 are started to pump away the oil body to be detected and recover the oil body to be detected, if the oil body to be detected is punctured, solid impurity bodies generated through chemical reaction can be filtered by the filter 32, so that the recovery tank 33 only recovers the oil body to be detected, and the purity of the recovered oil body to be detected is ensured so as to be convenient for recovery and utilization; if the closed oil cup 11 needs to be cleaned, the oil delivery electromagnetic valve 23, the first electromagnetic valve 24, the oil delivery pump 22, the oil pump 31, the oil pumping electromagnetic valve 34 and the second electromagnetic valve 35 are closed, the recovery tank 33 is replaced, a new recovery tank 33 is adopted for recovering the cleaning agent, then the third electromagnetic valve 53 and the cleaning pump 52 are started, the cleaning agent can be injected into the closed oil cup 11, after the liquid level of the cleaning agent reaches the required height, the cleaning pump 52 is stopped and the third electromagnetic valve 53 is closed, at the moment, the driving motor 72 is started, the cleaning agent is stirred by the stirring blade 71, the cleaning agent can rotate at a high speed in the closed oil cup 11, the closed oil cup 11 is washed by rotation, after the cleaning is completed, the driving motor 72 is stopped, and finally the oil pumping electromagnetic valve 34, the second electromagnetic valve 35 and the oil pump 31 are started, so that the cleaning agent is discharged out of the closed oil cup 11 through the liquid discharge port, and the oil is recovered through the recovery tank 33, after the recovery is finished, the oil pumping electromagnetic valve 34 and the second electromagnetic valve 35 are closed, the oil well pump 31 is stopped, and the recovery tank 33 is replaced for the next test of the oil body to be tested.
The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiments, and the technical effects of the present invention should be all included in the protection scope of the present invention as long as the technical effects are achieved by any of the same or similar means.
Claims (10)
1. An oil dielectric strength tester which is characterized in that: including sealed oil cup (11) and sealed withstand voltage test probe (12) of setting in sealed oil cup (11), the oiling mouth of sealed oil cup (11) and the oiling subassembly pipe joint that is used for pouring into the oil body that awaits measuring, the leakage fluid dram of sealed oil cup (11) and the recovery subassembly pipe joint that is used for retrieving the oil body that awaits measuring, withstand voltage test probe (12) still with withstand voltage test system (41) electric connection, the clean mouthful of sealed oil cup (11) and the clean subassembly pipe joint that is used for pouring into the sanitizer, the bottom of sealed oil cup (11) still is equipped with stirring leaf (71).
2. The oil dielectric strength tester of claim 1, wherein: the oil injection assembly comprises an oil inlet (21) and an oil transfer pump (22) which are sequentially connected through a pipe, and the oil transfer pump (22) is connected with the oil injection port through a pipeline.
3. The oil dielectric strength tester of claim 2, wherein: an oil delivery electromagnetic valve (23) is further arranged between the oil delivery pump (22) and the oil delivery port, and a first electromagnetic valve (24) is arranged between the oil inlet (21) and the oil delivery pump (22).
4. The oil dielectric strength tester of claim 1, wherein: the recovery assembly comprises an oil well pump (31), a filter (32) and a recovery tank (33) which are sequentially connected, wherein the oil well pump (31) is connected with the liquid outlet through a pipeline.
5. The oil dielectric strength tester of claim 4, wherein: an oil pumping electromagnetic valve (34) is further arranged between the oil well pump (31) and the liquid outlet, and a second electromagnetic valve (35) is arranged between the filter (32) and the recovery tank (33).
6. The oil dielectric strength tester of claim 1, wherein: the cleaning assembly comprises a cleaning tank (51) and a cleaning pump (52) which are sequentially connected in a pipe mode, a third electromagnetic valve (53) is further arranged between the cleaning pump (52) and the cleaning opening, and the cleaning tank (51) is used for storing cleaning agents.
7. The oil dielectric strength tester of claim 1, wherein: withstand voltage test system (41) includes control module, control module respectively with display module, voltage sampling module, high voltage direct current pulse generator and current sampling module electric connection still respectively with withstand voltage test probe (12) electric connection.
8. The oil dielectric strength tester of claim 7, wherein: the hydraulic pressure sensor (13) is arranged inside the closed oil cup (11), and the hydraulic pressure sensor (13) is further connected with the control module through the AD conversion module.
9. The oil dielectric strength tester of claim 7, wherein: the stirring device further comprises a driving motor (72) used for driving the stirring blade (71) to rotate, and the driving motor (72) is connected with the control module through a driving module.
10. The oil dielectric strength tester of claim 1, wherein: the closed oil cup (11) is further provided with a pressure relief opening (61), and a moisture-proof layer (62) is further arranged in the pressure relief opening (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920722327.8U CN210323202U (en) | 2019-05-20 | 2019-05-20 | Oil dielectric strength tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920722327.8U CN210323202U (en) | 2019-05-20 | 2019-05-20 | Oil dielectric strength tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210323202U true CN210323202U (en) | 2020-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920722327.8U Expired - Fee Related CN210323202U (en) | 2019-05-20 | 2019-05-20 | Oil dielectric strength tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210323202U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112730538A (en) * | 2020-12-22 | 2021-04-30 | 国网内蒙古东部电力有限公司呼伦贝尔供电公司 | Insulating oil dielectric property testing device and method with adjustable temperature and humidity |
| CN112748316A (en) * | 2020-12-31 | 2021-05-04 | 安徽新皖能检测有限公司 | Withstand voltage detection device for insulating oil and withstand voltage detection method thereof |
| CN114295682A (en) * | 2021-12-30 | 2022-04-08 | 重庆科技学院 | Device and method for testing electrical property of fluid under different pressures and temperatures |
-
2019
- 2019-05-20 CN CN201920722327.8U patent/CN210323202U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112730538A (en) * | 2020-12-22 | 2021-04-30 | 国网内蒙古东部电力有限公司呼伦贝尔供电公司 | Insulating oil dielectric property testing device and method with adjustable temperature and humidity |
| CN112748316A (en) * | 2020-12-31 | 2021-05-04 | 安徽新皖能检测有限公司 | Withstand voltage detection device for insulating oil and withstand voltage detection method thereof |
| CN114295682A (en) * | 2021-12-30 | 2022-04-08 | 重庆科技学院 | Device and method for testing electrical property of fluid under different pressures and temperatures |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200414 |
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| CF01 | Termination of patent right due to non-payment of annual fee |