CN108680393B - On-load voltage regulation oil quality on-line monitoring device - Google Patents
On-load voltage regulation oil quality on-line monitoring device Download PDFInfo
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- CN108680393B CN108680393B CN201810257980.1A CN201810257980A CN108680393B CN 108680393 B CN108680393 B CN 108680393B CN 201810257980 A CN201810257980 A CN 201810257980A CN 108680393 B CN108680393 B CN 108680393B
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- oil
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- hose
- monitoring device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; viscous liquids; paints; inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
Abstract
The invention discloses an on-load voltage regulation oil quality on-line monitoring device, which comprises a sampling tube, a sampling pump, a detection cavity, an oil product sensor, a wireless module and a processor, wherein the sampling tube is connected with the sampling pump; the sampling tube comprises a supporting tube and a telescopic sampling hose arranged in the supporting tube, a plurality of first oil inlet holes are distributed at equal intervals on the side surface of the supporting tube, second oil inlet holes are arranged on two sides of the tail end of the telescopic sampling hose, the top of the telescopic sampling hose is sealed by a plunger, the sampling pump injects pressure regulating oil to be detected into a detection cavity through the telescopic sampling hose, the oil sensor is arranged in the detection cavity, and the detection cavity discharges oil outwards through an oil discharge port; the oil product sensor, the wireless module and the sampling pump are respectively connected with the processor. The pressure regulating oil at multiple positions is sampled during detection, and the detection accuracy is improved.
Description
Technical Field
The invention relates to the technical field of transformer detection, in particular to an on-load voltage regulation oil quality on-line monitoring device.
Background
After the pressure regulating oil in the oil immersed on-load voltage regulating power transformer is used for a period of time, the viscosity, the density, the dielectric constant and the temperature of the pressure regulating oil are changed, the state of an oil product is reflected through the detection of the viscosity and the density of the oil, and the oil change period and the like are estimated. Generally, a monitoring device for the quality of on-load pressure regulating oil is arranged at an oil discharge port of an on-load pressure regulating switch oil tank, an oil sensor is immersed in the pressure regulating oil of a three-way valve through the three-way valve, and the viscosity and the density of the pressure regulating oil are detected by the oil sensor. However, when the detection is carried out by using the method, the detection device has the defects that the sampling of the pressure regulating oil is uneven, the pressure regulating oil at the oil discharge opening of the oil tank has weak flow, more impurities are accumulated at the bottom, and the detection result is inaccurate.
Disclosure of Invention
Aiming at the prior art, the invention provides the on-load pressure regulating oil quality on-line monitoring device, which is used for sampling the pressure regulating oil at multiple positions during detection, so that the detection accuracy is improved.
An on-load pressure regulating oil quality on-line monitoring device comprises a sampling tube, a sampling pump, a detection cavity, an oil product sensor, a wireless module and a processor; the sampling tube comprises a supporting tube and a telescopic sampling hose arranged in the supporting tube, a plurality of first oil inlet holes are distributed at equal intervals on the side surface of the supporting tube, second oil inlet holes are arranged on two sides of the tail end of the telescopic sampling hose, the top of the telescopic sampling hose is sealed by a plunger, the sampling pump injects pressure regulating oil to be detected into a detection cavity through the telescopic sampling hose, the oil sensor is arranged in the detection cavity, and the detection cavity discharges oil outwards through an oil discharge port; the oil product sensor, the wireless module and the sampling pump are respectively connected with the processor.
Furthermore, a spherical hole is formed in the side face of the plunger, and a ball and a spring for pushing the ball outwards are arranged in the spherical hole.
Furthermore, a slope is arranged on the first oil inlet hole in the supporting tube and is positioned on one side close to the tail end of the supporting tube.
Furthermore, the tail end of the supporting tube is provided with a floating ball, and the head end of the supporting tube is provided with a bendable hose.
Further, scalable sample hose through the stirring chamber with it communicates with each other to detect the chamber, scalable sample hose with be equipped with first check valve between the stirring chamber, the stirring chamber with it is equipped with the second check valve to detect between the chamber, be equipped with the stirring leaf in the stirring chamber, the stirring leaf is by first motor drive, first motor with the treater is connected.
Furthermore, a plurality of blades for stabilizing fluid disturbance are arranged on the inner wall of the detection cavity.
Further, the oil drain port is connected with the oil discharge cavity through a third one-way valve, the oil discharge cavity is a hollow cylinder with a second piston arranged therein, the oil discharge cavity is internally provided with a linear motor for pushing the second piston, the oil discharge cavity discharges oil outwards through an oil discharge pipe, and the oil discharge pipe is provided with a pressure release valve.
The invention has the beneficial effects that: in the in-process of sample, the sampling pump passes through the sampling tube extraction and waits to examine oil, forms the negative pressure in scalable sample hose, and the negative pressure makes the sampling tube slowly shrink, and in the oil that awaits measuring gets into the sampling tube from the oil tank when first oil inlet aligns with the second oil inlet, in the sampling pump working process, scalable sample hose is shortened by the length, and the oil that awaits measuring is extracted from the different positions of oil tank, avoids the sample uneven and causes the detection inaccurate.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only preferred embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an on-load tap changing oil quality on-line monitoring device in embodiment 1 of the present invention;
FIG. 2 is a schematic view of a support tube structure according to embodiment 1 of the present invention;
FIG. 3 is a schematic view of the structure of a retractable sampling hose according to embodiment 1 of the present invention;
fig. 4 is a schematic diagram of a principle of an on-load tap changing oil quality on-line monitoring device in embodiment 1 of the present invention;
fig. 5 is a schematic structural diagram of an on-load tap changing oil quality on-line monitoring device in embodiment 2 of the present invention;
fig. 6 is a schematic diagram of a principle of an on-load tap changing oil quality on-line monitoring device in embodiment 2 of the present invention;
fig. 7 is a schematic structural diagram of an on-load tap changing oil quality on-line monitoring device in embodiment 3 of the present invention;
fig. 8 is a schematic diagram of a principle of an on-load tap changing oil quality on-line monitoring device according to embodiment 3 of the present invention;
in the figure, 1 sampling pump, 2 detection cavity, 3 oil sensor, 4 wireless module, 5 processor, 6 support tube, 7 telescopic sampling hose, 8 first oil inlet, 9 plunger, 10 second oil inlet, 11 oil discharge port, 12 spherical hole, 13 spring, 15 floating ball, 16 bendable hose, 17 stirring cavity, 18 first check valve, 19 second check valve, 20 pressure release valve, 21 stirring leaf, 22 oil discharge tube, 23 first motor, 24 linear motor, 25 blade, 26 second piston, 27 ball, 28 third check valve, 29 oil discharge cavity, 30 second piston.
Detailed Description
In order to better understand the technical content of the invention, specific embodiments are provided below, and the invention is further described with reference to the accompanying drawings.
Example 1
Referring to fig. 1 to 4, an on-load voltage regulation oil quality on-line monitoring device comprises a sampling tube, a sampling pump 1, a detection cavity 2, an oil product sensor 3, a wireless module 4 and a processor 5; specifically, the oil sensor 3 includes a viscosity sensor and a density sensor, and is used for detecting the density and viscosity of the pressure-regulated oil. The sampling tube comprises a supporting tube 6 and a telescopic sampling hose 7 arranged in the supporting tube 6, and particularly, the tube wall of the telescopic sampling hose 7 is formed by a corrugated part coiled around the extension direction of the telescopic sampling hose 7. A plurality of first oil inlet holes 8 are formed in the side face of the supporting tube 6 and are distributed at equal intervals, second oil inlet holes 10 are formed in two sides of the tail end of the telescopic sampling hose 7, the top of the telescopic sampling hose 7 is sealed by a plunger 9, pressure regulating oil to be detected is injected into the detection cavity 2 through the telescopic sampling hose 7 by the sampling pump 1, the oil sensor 3 is arranged in the detection cavity 2, and oil is discharged outwards from the detection cavity 2 through an oil discharge port 11; the oil product sensor 3, the wireless module 4 and the sampling pump 1 are respectively connected with the processor 5.
During the sample, sampling pump 1 work for form the negative pressure in the scalable sample hose 7, scalable sample hose 7 length shortens under the negative pressure effect, simultaneously in the pressure regulating oil entering scalable sample hose 7 in the oil tank under the effect of negative pressure, get into through scalable sample hose 7 and detect chamber 2, detect the oil sensor 3 in the chamber 2 and detect the density and the viscosity of pressure regulating oil, and transmit the result that detects to treater 5, treater 5 goes out the signal transmission who detects through wireless module 4. In the process of extracting the pressure regulating oil for detection, the telescopic sampling hose 7 contracts while feeding oil, and samples are respectively taken from different positions of the mailbox in the contraction process. The accuracy of detection is improved. The process of extending or shortening the retractable sampling hose 7 is completed in the supporting tube 6, so as to avoid being blocked in the process of extending or retracting. The plunger 9 prevents a large amount of pressure regulating oil from entering from the top of the telescopic sampling hose 7, and the telescopic hose can be compressed by negative pressure.
Specifically, a spherical hole 12 is formed in a side surface of the plunger 9, and a ball 27 and a spring 13 for pushing the ball 27 outward are provided in the spherical hole 12. Ball 27 outwards pushes out under the effect of spring 13, and ball 27 and the inner wall laminating of stay tube 6 avoid scalable sample hose 7 to appear rocking when flexible.
Specifically, the first oil inlet 8 on the support tube 6 is provided with a slope, and the slope is positioned at one side close to the tail end of the support tube 6. Avoid blocking when scalable sample hose 7 extends, improve the stability of device.
Specifically, the tail end of the supporting tube 6 is provided with a floating ball 15, and the head end of the supporting tube 6 is provided with a bendable hose 16. The tail end of the supporting pipe 6 floats upwards under the buoyancy effect of the floating ball 15, the bendable hose 16 enables the supporting pipe 6 to be bent, and the supporting pipe 6 is vertical in an oil tank under the effects of the floating ball 15 and the bendable hose 16, so that pressure regulating oil with different depths can be obtained during sampling.
Example 2
Referring to fig. 5 to 6, the present embodiment is different from embodiment 1 in that the retractable sampling hose 7 is communicated with the detection chamber 2 through a stirring chamber 17, pressure-regulating oil entering from the retractable sampling hose 7 firstly passes through the stirring chamber 17, a first one-way valve 18 is disposed between the retractable sampling hose 7 and the stirring chamber 17, a second one-way valve 19 is disposed between the stirring chamber 17 and the detection chamber 2, the first one-way valve 18 and the second one-way valve 19 prevent the pressure-regulating oil from flowing backwards, a stirring blade 21 is disposed in the stirring chamber 17, the stirring blade 21 is driven by a first motor 23, and the first motor 23 is connected with the processor 5. Under the control of the processor 5, the first motor 23 rotates, and after the pressure regulating oil enters the stirring cavity 17, the pressure regulating oil in the stirring cavity 17 is stirred by the stirring blade 21, so that the pressure regulating oil is uniformly mixed.
Specifically, the inner wall of the detection chamber 2 is provided with a plurality of vanes 25 for stabilizing the fluid disturbance. After the pressure regulating oil enters the detection cavity 2, resistance is formed on the flow of the pressure regulating oil, the shaking of the pressure regulating oil is avoided, and the stability of the pressure regulating oil is promoted.
Example 3
Referring to fig. 7 to 8, the difference between the present embodiment and embodiment 2 is that the oil discharge port 11 is connected to an oil discharge cavity 29 through a third check valve 28, the third check valve 28 prevents backflow of the pressure regulating oil, the oil discharge cavity 29 is a hollow cylinder with a second piston 26 inside, the piston reciprocates to suck the pressure regulating oil and discharge the pressure regulating oil, a linear motor 24 for pushing the second piston 26 is arranged inside the oil discharge cavity 29, the second piston 26 sucks the pressure regulating oil and discharges the pressure regulating oil under the pushing of the linear motor 24, the oil discharge cavity 29 discharges oil outwards through an oil discharge pipe 22, and a pressure release valve 20 is arranged on the oil discharge pipe 22. The relief valve 20 maintains a certain pressure in the drain pipe 22 so that it can be ejected out of the drain pipe 22 to avoid accumulation at the oil outlet of the tank.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. An on-load pressure regulating oil quality on-line monitoring device is characterized by comprising a sampling tube, a sampling pump, a detection cavity, an oil product sensor, a wireless module and a processor; the sampling tube comprises a supporting tube and a telescopic sampling hose arranged in the supporting tube, a plurality of first oil inlet holes are distributed at equal intervals on the side surface of the supporting tube, second oil inlet holes are arranged on two sides of one end, away from the sampling pump, of the telescopic sampling hose, the end part of the telescopic sampling hose is sealed by a plunger, pressure regulating oil to be detected is injected into a detection cavity by the sampling pump through the telescopic sampling hose, the oil sensor is arranged in the detection cavity, and the detection cavity discharges oil outwards through an oil discharge port; the oil product sensor, the wireless module and the sampling pump are respectively connected with the processor.
2. The on-load tap changing oil quality on-line monitoring device of claim 1, wherein a spherical hole is formed in the side surface of the plunger, and a ball and a spring for pushing the ball outwards are arranged in the spherical hole.
3. The on-load tap changing oil quality on-line monitoring device of claim 2, wherein a slope is arranged at the first oil inlet on the supporting pipe, and the slope is positioned at one side close to the tail end of the supporting pipe.
4. The on-load voltage regulation oil quality on-line monitoring device of claim 1, wherein a floating ball is arranged at the tail end of the supporting tube, and a bendable hose is arranged at the head end of the supporting tube.
5. The on-load tap changing oil quality on-line monitoring device of claim 1, wherein the retractable sampling hose is communicated with the detection cavity through a stirring cavity, a first one-way valve is arranged between the retractable sampling hose and the stirring cavity, a second one-way valve is arranged between the stirring cavity and the detection cavity, a stirring blade is arranged in the stirring cavity, the stirring blade is driven by a first motor, and the first motor is connected with the processor.
6. The on-load tap changing oil quality on-line monitoring device of claim 1, wherein the inner wall of the detection cavity is provided with a plurality of blades for stabilizing fluid disturbance.
7. The on-load tap changing oil quality on-line monitoring device according to claim 1, wherein the oil discharge port is connected with an oil discharge cavity through a third one-way valve, the oil discharge cavity is a hollow cylinder with a second piston therein, a linear motor for pushing the second piston is arranged in the oil discharge cavity, the oil discharge cavity discharges oil outwards through an oil discharge pipe, and a pressure release valve is arranged on the oil discharge pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810257980.1A CN108680393B (en) | 2018-03-27 | 2018-03-27 | On-load voltage regulation oil quality on-line monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810257980.1A CN108680393B (en) | 2018-03-27 | 2018-03-27 | On-load voltage regulation oil quality on-line monitoring device |
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| Publication Number | Publication Date |
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| CN108680393A CN108680393A (en) | 2018-10-19 |
| CN108680393B true CN108680393B (en) | 2020-08-14 |
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| CN201810257980.1A Active CN108680393B (en) | 2018-03-27 | 2018-03-27 | On-load voltage regulation oil quality on-line monitoring device |
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| CN112816261B (en) * | 2021-01-25 | 2022-10-25 | 上海禾楷电气科技有限公司 | Power system monitoring device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5237878A (en) * | 1991-07-02 | 1993-08-24 | Sematech, Inc. | Apparatus and method for sampling ultra-pure chemical |
| CN202351085U (en) * | 2011-12-09 | 2012-07-25 | 东南大学 | Displacement-adjustable connection sampling device for crude oil transportation pipeline |
| CN102759608A (en) * | 2012-05-18 | 2012-10-31 | 南京领先环保技术有限公司 | Floating type solar energy online multi-parameter water quality monitor |
| CN203224381U (en) * | 2013-05-14 | 2013-10-02 | 国家电网公司 | Oil sampling device of on-load tap changer oil tank |
| CN204043950U (en) * | 2014-06-24 | 2014-12-24 | 国家电网公司 | The automatic collecting and sampling operator's console of waste oil |
| CN206891784U (en) * | 2017-07-13 | 2018-01-16 | 漯河市恒钜液压设备有限公司 | Portable oil liquid sampling |
| CN207231832U (en) * | 2017-09-11 | 2018-04-13 | 佛山科学技术学院 | Telescopic soil liquid collector |
-
2018
- 2018-03-27 CN CN201810257980.1A patent/CN108680393B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5237878A (en) * | 1991-07-02 | 1993-08-24 | Sematech, Inc. | Apparatus and method for sampling ultra-pure chemical |
| CN202351085U (en) * | 2011-12-09 | 2012-07-25 | 东南大学 | Displacement-adjustable connection sampling device for crude oil transportation pipeline |
| CN102759608A (en) * | 2012-05-18 | 2012-10-31 | 南京领先环保技术有限公司 | Floating type solar energy online multi-parameter water quality monitor |
| CN203224381U (en) * | 2013-05-14 | 2013-10-02 | 国家电网公司 | Oil sampling device of on-load tap changer oil tank |
| CN204043950U (en) * | 2014-06-24 | 2014-12-24 | 国家电网公司 | The automatic collecting and sampling operator's console of waste oil |
| CN206891784U (en) * | 2017-07-13 | 2018-01-16 | 漯河市恒钜液压设备有限公司 | Portable oil liquid sampling |
| CN207231832U (en) * | 2017-09-11 | 2018-04-13 | 佛山科学技术学院 | Telescopic soil liquid collector |
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| CN108680393A (en) | 2018-10-19 |
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Effective date of registration: 20230728 Address after: 570101 Room 506, Huayu Building, Haifu Yiheng Road, Meilan District, Haikou City, Hainan Province Patentee after: Hainan Electric Power Industry Development Co.,Ltd. Address before: No. 23, Hairuihou Road, Haikou City, Hainan Province, 570311 Patentee before: ELECTRIC POWER RESEARCH INSTITUTE OF HAINAN POWER GRID Co.,Ltd. |