CN211870290U - On-site inspection or calibration oil storage device for oil chromatography on-line monitoring device in high-altitude area - Google Patents
On-site inspection or calibration oil storage device for oil chromatography on-line monitoring device in high-altitude area Download PDFInfo
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- CN211870290U CN211870290U CN202020503264.XU CN202020503264U CN211870290U CN 211870290 U CN211870290 U CN 211870290U CN 202020503264 U CN202020503264 U CN 202020503264U CN 211870290 U CN211870290 U CN 211870290U
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 34
- 238000007689 inspection Methods 0.000 title claims abstract description 28
- 238000004587 chromatography analysis Methods 0.000 title claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 230000002572 peristaltic effect Effects 0.000 claims description 7
- 239000007789 gas Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/34—Large containers having floating covers, e.g. floating roofs or blankets
- B65D88/36—Large containers having floating covers, e.g. floating roofs or blankets with relatively movable sections
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/22—Safety features
- B65D90/32—Arrangements for preventing, or minimising the effect of, excessive or insufficient pressure
- B65D90/34—Venting means
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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
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
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Abstract
The utility model discloses a high altitude area oil chromatogram on-line monitoring device on-site inspection or calibration oil storage device, include: the oil-gas mixing device comprises an exhaust valve, an oil inlet valve, an oil discharge valve, a tee joint, a cylinder body, a piston, a spring, a pump, an oil filling pipe, an oil discharge pipe and an exhaust pipe; the first end of the tee joint is connected with one end of an oil delivery pipe, and the other end of the oil delivery pipe penetrates through the bottom of the cylinder body and is communicated with the inside of the cylinder body; the second end of the tee joint is connected with an oil filling pipe, and an oil inlet valve and a pump are arranged on the oil filling pipe; the third end of the tee joint is connected with an oil discharge pipe, and an oil discharge valve is arranged on the oil discharge pipe; the piston is movably arranged on the inner wall of the cylinder body and is provided with an exhaust hole; the spring is arranged between the piston and the upper sealing cover of the cylinder body; one end of the exhaust pipe is communicated with the exhaust hole, and the exhaust pipe is provided with an exhaust valve; the device can keep the content of gas components stable and unchanged for a long time, and the storage capacity simultaneously meets the field inspection or calibration of 3 oil chromatography online monitoring devices.
Description
Technical Field
The utility model relates to an on-the-spot inspection or calibration transformer oil chromatogram on-line monitoring device field, concretely relates to high altitude area oil chromatogram on-line monitoring device on-the-spot inspection or calibration oil storage device.
Background
The transformer oil chromatogram on-line monitoring device is widely applied to transformer substations with voltage levels of 220kV and above, is one of on-line monitoring methods for effectively sensing transformation fault information, and is gradually applied to high-altitude and high-cold areas at present. The oil chromatogram on-line monitoring device often puts into operation initial stage equipment and normally works, and the degree of accuracy can still satisfy the requirement, because lack effectual inspection or calibration in the operation, through two three years' use, even shorter time, the degree of accuracy descends, and data drift is serious, causes the wrong report to the police frequently. In order to ensure the accuracy of the detection data of the oil chromatogram on-line monitoring device and avoid the occurrence of false alarm or false alarm failure, the oil chromatogram on-line monitoring device needs to be checked or calibrated necessarily, timely and effectively.
The on-line monitoring device for the on-site inspection or calibration of the transformer oil chromatogram compares off-line data with on-line monitoring data by preparing an oil sample containing fault characteristic component gas with certain concentration, calculates the measurement error and repeatability of the on-line monitoring data, and carries out grading. The gas dissolved in the liquid is influenced by the external large pressure and temperature, the content of the gas easy to escape is reduced, and the gas is difficult to store for a long time. In high altitude areas, due to low air pressure and large temperature difference change, characteristic component gas dissolved in oil is easy to escape, the content is reduced, and the inspection or calibration of the transformer oil chromatography online monitoring device is influenced. The existing oil storage devices all adopt a micro-positive pressure or pressurizing built-in capsule type oil sample storage mode, and when the mode is used for carrying out on-site inspection or calibration on the transformer oil chromatogram on-line monitoring device in a high altitude area, the characteristic component gas in the oil escapes due to the reduction of the external atmospheric pressure, so that the inspection or calibration result is distorted due to the content change and the poor stability. Therefore, a new storage mode is found to realize the validity of on-site inspection or calibration of the transformer oil chromatographic monitoring device.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that high altitude area is because the atmospheric pressure is low, the temperature difference changes greatly, the characteristic component gas of dissolving in oil easily escapes, the content changes, the influence is to transformer oil chromatogram on-line monitoring device's inspection or calibration, and external atmospheric pressure reduces characteristic component gas in can making oil and escapes, the content change, the stability variation, cause the problem of inspection or calibration result distortion, aim at provides a high altitude area oil chromatogram on-line monitoring device on-the-spot inspection or calibration oil storage device, solve above-mentioned problem.
The utility model discloses a following technical scheme realizes:
on-site inspection or calibration oil storage device of an oil chromatography on-line monitoring device in a high altitude area, the device comprises:
the oil-gas separator comprises an exhaust valve, an oil inlet valve, an oil discharge valve, a tee joint, an oil storage cylinder body, a piston, a spring, a pump, an oil filling pipe, an oil discharge pipe and an exhaust pipe;
the first end of the tee joint is connected with one end of the oil filling pipe, and the other end of the oil filling pipe penetrates through the bottom of the oil storage cylinder body to be communicated with the interior of the oil storage cylinder body;
the second end of the tee joint is connected with the oil filling pipe, and the oil inlet valve and the pump are arranged on the oil filling pipe;
a third end of the tee joint is connected with the oil discharge pipe, and the oil discharge valve is arranged on the oil discharge pipe;
the piston is movably arranged on the inner wall of the oil storage cylinder body and can move up and down along the inner wall of the oil storage cylinder body, the area below the piston in the oil storage cylinder body is an oil sample storage area, and the piston is provided with an exhaust hole;
the lower end of the spring is connected with the upper surface of the piston, and the upper end of the spring is connected with the lower surface of the upper sealing cover of the oil storage cylinder body;
one end of the exhaust pipe extends into the oil storage cylinder body after penetrating through the upper sealing cover of the oil storage cylinder body and is communicated with the exhaust hole, and the exhaust pipe is provided with the exhaust valve.
In the utility model, the oil storage cylinder body is provided with an oil inlet and outlet, a three-way node is arranged on the oil inlet and outlet, the oil outlet pipe and the oil filling pipe are connected through the three-way node, an oil discharge valve and an oil inlet valve are arranged between the oil outlet pipe and the oil filling pipe and the three-way node to control the oil sample in the oil storage cylinder, the on-site inspection or calibration oil storage device in the application mainly adopts the method of balancing the internal and external air pressure to store the prepared oil sample, therefore, a piston is arranged in the oil storage cylinder, the oil storage cylinder body is in a skirt shape and is placed in an inverted buckle manner, the oil storage cylinder body is divided into two parts, a spring is arranged between the umbrella skirt-shaped piston and the sealing cover on the see-through cylinder body, so that the oil storage cylinder body is zero through the resultant force of the spring elasticity, the piston gravity and the frictional resistance of the piston and the cylinder wall, the air pressure of the oil sample in the cylinder body is consistent with the external atmospheric pressure; the diameter of the spring is slightly smaller than that of the piston, so that the piston is vertically stabilized to avoid jamming.
Further, the cylinder body is a perspective cylinder body, so that the oil sample state can be observed conveniently.
Further, the piston is an umbrella skirt-shaped piston;
the umbrella skirt-shaped piston is movably mounted on the inner wall of the oil storage cylinder body in a reversed buckle shape, and an opening is formed in the center of the top end of the umbrella skirt-shaped piston.
Further, the pump is a peristaltic pump, and no air bubbles are generated in the sample in the process of pumping the sample by the peristaltic pump.
Further, the spring diameter is less than the piston diameter, just the spring diameter size with the difference of piston diameter size is located preset range, plays the effect of perpendicular stable piston in order to avoid the bite.
The working process of the device comprises the following steps:
(1) oil injection: the oil drain valve and the exhaust valve are closed, and the oil inlet valve is opened. And starting the peristaltic pump, injecting the prepared oil sample into the oil storage cylinder, and stopping injecting oil after the oil is injected to the specified scale position.
(2) Air bubble removal: and opening the exhaust valve, then continuously injecting oil until the oil sample overflows from the orifice of the oil discharge pipe, indicating that air bubbles in the oil storage cylinder are completely discharged, and closing the exhaust valve and the oil injection valve.
(3) The oil sample is used: connecting an oil discharge pipe with an oil inlet of the oil chromatogram on-line monitoring device, opening an oil discharge valve, and injecting an oil sample into an oil-gas separation unit of the oil chromatogram on-line monitoring device through an oil pump of the oil chromatogram on-line monitoring device.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
1. the utility model discloses high height above sea level area oil chromatogram on-line monitoring device on-the-spot inspection or calibration oil storage device is zero through elasticity, piston gravity, piston and the cylinder wall frictional resistance's that adopts the piston to seal and piston top spring resultant force for the inside and outside atmospheric pressure of oil storage cylinder is unanimous, and the gas content of characteristic component is stable in the guarantee oil appearance, the sealed constant voltage memory mode of piston can effectively solve the problem that the storage effect is poor, the save time is short and the influence of high height above sea level to the gas content of characteristic component in the oil.
2. The utility model discloses high altitude area oil chromatogram on-line monitoring device witnessed inspections or calibration oil storage device provides the oil appearance that characteristic component gas content is stable, the shelf life is long for high altitude area oil chromatogram on-line monitoring device witnessed inspections or calibration to the device structure is simple and easy, easy operation, portable, can satisfy 3 oil chromatogram on-line monitoring device witnessed inspections or calibration requirements simultaneously.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic diagram of the on-site inspection or calibration oil storage device of the high altitude area oil chromatography on-line monitoring device of the present invention;
the reference numbers and names of corresponding parts in the drawings are as follows: 1-an exhaust valve; 2-an oil drain valve; 3-an oil inlet valve; 4-oil storage cylinder body; 5-a piston; 6-spring, 7-exhaust pipe; 8-an oil discharge pipe; 9-a tee joint; 10-an oil filling pipe; 11-pump.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Example 1
As shown in fig. 1, the on-site inspection or calibration of the oil storage device by the high altitude region oil chromatography on-line monitoring device comprises:
the device comprises an exhaust valve 1, an oil inlet valve 3, an oil discharge valve 2, a tee joint 9, an oil storage cylinder 4, a piston 5, a spring 6, a pump 11, an oil filling pipe 10, an oil discharge pipe 8 and an exhaust pipe 7;
the first end of the tee joint 9 is connected with one end of the oil filling pipe 10, and the other end of the oil filling pipe 10 penetrates through the bottom of the oil storage cylinder body 4 to be communicated with the interior of the oil storage cylinder body 4;
the second end of the tee joint 9 is connected with the oil filling pipe 10, and the oil inlet valve 3 and the pump 11 are arranged on the oil filling pipe 10;
a third end of the tee joint 9 is connected with the oil discharge pipe 8, and the oil discharge valve 2 is arranged on the oil discharge pipe 8;
the piston 5 is movably arranged on the inner wall of the oil storage cylinder body 4 and can move up and down along the inner wall of the oil storage cylinder body 4, the area below the piston 5 in the oil storage cylinder body 4 is an oil sample storage area, and the piston 5 is provided with an exhaust hole;
the lower end of the spring 6 is connected with the upper surface of the piston 5, and the upper end of the spring 6 is connected with the lower surface of the upper sealing cover of the oil storage cylinder 4;
one end of the exhaust pipe 7 extends into the oil storage cylinder body 4 after penetrating through the upper sealing cover of the oil storage cylinder body 4 and is communicated with the exhaust hole, and the exhaust pipe 7 is provided with the exhaust valve 1.
Further, the cylinder body is a perspective cylinder body, so that the oil sample state can be observed conveniently.
Further, the piston is an umbrella skirt-shaped piston;
the umbrella skirt-shaped piston is movably mounted on the inner wall of the oil storage cylinder body in a reversed buckle shape, and an opening is formed in the center of the top end of the umbrella skirt-shaped piston.
Further, the pump is a peristaltic pump, and no air bubbles are generated in the sample in the process of pumping the sample by the peristaltic pump.
Further, the diameter of the spring is smaller than that of the piston, and the difference between the diameter of the spring and the diameter of the piston is within a preset range.
In the embodiment of the application, the upper end of a spring between the umbrella skirt-shaped piston and the see-through cylinder body upper sealing cover is fixed on the cylinder body upper sealing cover, the lower end of the spring is fixed on the upper part of the piston, and the resultant force of the elastic force of the spring, the gravity of the piston and the frictional resistance of the piston and the cylinder wall is zero, so that the air pressure of an oil sample in the cylinder body is consistent with the external atmospheric pressure; the diameter of the spring is slightly smaller than that of the piston, so that the piston is vertically stabilized to avoid jamming.
In the embodiment of the present application, the workflow of the apparatus includes the following steps:
1, oil injection: the oil drain valve and the exhaust valve are closed, and the oil inlet valve is opened. And starting the peristaltic pump, injecting the prepared oil sample into the oil storage cylinder, and stopping injecting oil after the oil is injected to the specified scale position.
2, exhausting bubbles: and opening the exhaust valve, then continuously injecting oil until the oil sample overflows from the orifice of the oil discharge pipe, indicating that air bubbles in the oil storage cylinder are completely discharged, and closing the exhaust valve and the oil injection valve.
3, using an oil sample: connecting an oil discharge pipe with an oil inlet of the oil chromatography online monitoring device, opening an oil discharge valve, and injecting an oil sample into an oil-gas separation unit of the oil chromatography online monitoring device through an oil pump of the oil chromatography online monitoring device.
The device adopts the perspective cylinder body as an oil sample storage cylinder body; the device adopts the piston with the umbrella skirt-shaped structure with the vent holes to store oil samples; the device utilizes the fact that the resultant force of the elastic force of the spring, the gravity of the piston and the frictional resistance of the piston and the cylinder wall is zero, so that the air pressure of an oil sample in the cylinder body is consistent with the external atmospheric pressure, and the technical effects obtained by the device adopted by the embodiment are that the dissipation degrees of gases with different concentrations are-0.6% -0.1% and the relative errors are-5% -1% as shown in tables 1, 2 and 3.
TABLE 1 different concentrations of CH4、C2H4、C2H6、C2H2、H2、CO、CO2Accuracy and ease of use of
TABLE 2 different concentrations of CH4、C2H4、C2H6、C2H2、H2、CO、CO2Accuracy and ease of use of
TABLE 3 different concentrations of CH4、C2H4、C2H6、C2H2、H2、CO、CO2Accuracy and ease of use of
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. On-site inspection or calibration oil storage device of high-altitude area oil chromatogram on-line monitoring device, its characterized in that, the device includes:
the oil-gas mixing device comprises an exhaust valve (1), an oil inlet valve (3), an oil discharge valve (2), a tee joint (9), an oil storage cylinder body (4), a piston (5), a spring (6), a pump (11), an oil filling pipe (10), an oil discharge pipe (8) and an exhaust pipe (7);
the first end of the tee joint (9) is connected with one end of the oil filling pipe (10), and the other end of the oil filling pipe (10) penetrates through the bottom of the oil storage cylinder body (4) to be communicated with the interior of the oil storage cylinder body (4);
the second end of the tee joint (9) is connected with the oil filling pipe (10), and the oil inlet valve (3) and the pump (11) are arranged on the oil filling pipe (10);
a third end of the tee joint (9) is connected with the oil discharge pipe (8), and the oil discharge valve (2) is arranged on the oil discharge pipe (8);
the piston (5) is movably arranged on the inner wall of the oil storage cylinder body (4) and can move up and down along the inner wall of the oil storage cylinder body (4), the area, below the piston (5), in the oil storage cylinder body (4) is an oil sample storage area, and the piston (5) is provided with an exhaust hole;
the lower end of the spring (6) is connected with the upper surface of the piston (5), and the upper end of the spring (6) is connected with the lower surface of the upper sealing cover of the oil storage cylinder body (4);
blast pipe (7) one end is followed extend to after the closing cap passes on oil storage cylinder body (4) in the oil storage cylinder body (4) with exhaust hole intercommunication, be equipped with on blast pipe (7) discharge valve (1).
2. The high-altitude area oil chromatography on-line monitoring device field inspection or calibration oil storage device of claim 1, characterized in that the oil storage cylinder (4) is a perspective cylinder.
3. The high-altitude region oil chromatography online monitoring device field inspection or calibration oil storage device according to claim 1, characterized in that the piston (5) is a shed piston;
the umbrella skirt-shaped piston is movably mounted on the inner wall of the oil storage cylinder body (4) in a reversed buckle mode, and an exhaust hole is formed in the center of the top end of the umbrella skirt-shaped piston.
4. The high-altitude region oil chromatography on-line monitoring device field inspection or calibration oil storage device according to claim 1, characterized in that the pump (11) is a peristaltic pump.
5. The high-altitude area oil chromatography online monitoring device field inspection or calibration oil storage device according to claim 1, characterized in that the diameter of the spring (6) is smaller than the diameter of the piston (5), and the difference between the diameter of the spring (6) and the diameter of the piston (5) is within a preset range.
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| CN201921469210X | 2019-09-04 | ||
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| CN202010268435.XA Active CN111453217B (en) | 2019-09-04 | 2020-04-08 | Device and method for on-site inspection or calibration of oil storage device of oil chromatograph in high-altitude area |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111453217A (en) * | 2019-09-04 | 2020-07-28 | 国网四川省电力公司电力科学研究院 | On-site inspection or calibration oil storage device and method for oil chromatography on-line monitoring device in high-altitude area |
| CN113624852A (en) * | 2021-08-06 | 2021-11-09 | 国网新疆电力有限公司检修公司 | Oil chromatogram online oil discharge and collection device |
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| CN112255351A (en) * | 2020-10-23 | 2021-01-22 | 成都佳信电气工程技术有限公司 | Online chromatogram standard oil preparation device |
| CN112389812A (en) * | 2020-11-09 | 2021-02-23 | 广西电网有限责任公司电力科学研究院 | Small oil storage device applied to on-site detection on-line chromatographic device |
| CN112896730B (en) * | 2020-12-25 | 2022-06-03 | 国网四川省电力公司电力科学研究院 | Insulating oil storage structure of oil chromatography online monitoring device, detection device and method |
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| CN108333279B (en) * | 2018-01-25 | 2021-03-16 | 河南中分仪器股份有限公司 | Online monitoring device for dissolved gas in insulating oil and method for removing gas from insulating oil |
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| CN211870290U (en) * | 2019-09-04 | 2020-11-06 | 国网四川省电力公司电力科学研究院 | On-site inspection or calibration oil storage device for oil chromatography on-line monitoring device in high-altitude area |
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2020
- 2020-04-08 CN CN202020503264.XU patent/CN211870290U/en active Active
- 2020-04-08 CN CN202010268435.XA patent/CN111453217B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111453217A (en) * | 2019-09-04 | 2020-07-28 | 国网四川省电力公司电力科学研究院 | On-site inspection or calibration oil storage device and method for oil chromatography on-line monitoring device in high-altitude area |
| CN111453217B (en) * | 2019-09-04 | 2024-05-14 | 国网四川省电力公司电力科学研究院 | Device and method for on-site inspection or calibration of oil storage device of oil chromatograph in high-altitude area |
| CN113624852A (en) * | 2021-08-06 | 2021-11-09 | 国网新疆电力有限公司检修公司 | Oil chromatogram online oil discharge and collection device |
| CN113624852B (en) * | 2021-08-06 | 2024-04-30 | 国网新疆电力有限公司超高压分公司 | Online oil discharge and collection device for oil chromatography |
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| CN111453217B (en) | 2024-05-14 |
| CN111453217A (en) | 2020-07-28 |
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