CN112033852A - Method for detecting gas content of oil sample - Google Patents
Method for detecting gas content of oil sample Download PDFInfo
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- CN112033852A CN112033852A CN202010956448.6A CN202010956448A CN112033852A CN 112033852 A CN112033852 A CN 112033852A CN 202010956448 A CN202010956448 A CN 202010956448A CN 112033852 A CN112033852 A CN 112033852A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 26
- 238000005070 sampling Methods 0.000 claims abstract description 20
- 239000002699 waste material Substances 0.000 claims abstract description 19
- 238000009849 vacuum degassing Methods 0.000 claims description 17
- 238000005086 pumping Methods 0.000 claims description 5
- 239000003921 oil Substances 0.000 description 106
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/14—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Hydrology & Water Resources (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a method for detecting the gas content of an oil sample, which comprises a sealed vessel, a quantitative sampler, a vacuumizing device, a vacuum degree measuring device and a waste oil collector, wherein the quantitative sampler is arranged on the sealed vessel; an oil taking valve of the transformer is connected with an oil inlet of a quantitative sampler through an oil pipe, an oil outlet of the quantitative sampler is communicated with a waste oil collector through the oil pipe, an oil outlet of the quantitative sampler is connected with a plurality of branch pipelines, each branch pipeline is correspondingly communicated with an oil inlet of a vessel, an air vent of each vessel is communicated with the same vacuumizing device through the oil pipe, and valves are arranged on each oil pipe and each branch pipeline; two sides of the valve of each branch pipeline are connected with a vacuum degree measuring device; and then controlling related valves to sequentially perform sampling and vacuumizing, and detecting the gas content of the oil sample. The detection method can be used for simultaneously detecting a plurality of samples of the transformer oil on site, can improve the detection speed, reduces the detection cost and saves the labor.
Description
Technical Field
The invention belongs to the technical field of electric power tests, and particularly relates to a method for detecting gas content of an oil sample.
Background
The gas content in the oil refers to the volume percentage content of dissolved gas in the transformer oil, according to professional data statistics, a new transformer oil sample in a gas content in oil experiment accounts for more than 85% of a total detection sample, namely, most of the samples are used for detecting the gas content of the new transformer oil, and the main component of the gas content in the new transformer oil is air (other components are not generated), so that the method for rapidly detecting the gas content in a plurality of test oils is very important for the new transformer oil.
The current detection methods include gas chromatography and vacuum degassing. The detection of the gas content index in the oil is to prevent the bubble discharge fault caused by the overlarge gas content in the oil, and the GB/T7595-2008 'quality standard of transformer oil in operation' requires the detection of the gas content of the transformer oil in new operation of a transformer above 330 kilovolts. In the transformer oil which is newly put into operation, the main component of the gas content in the oil is air, and the main component of the gas content in the transformer oil which is operated for a long time is air, carbon dioxide, carbon monoxide and hydrocarbons. The detection time of the gas chromatograph method is too long, and comprises a sample oscillation link and a gas chromatograph detection link, the time for detecting a sample at one time is close to 3 hours, only one sample can be detected each time, the rapid detection is not facilitated, and the price of an instrument is high; the accuracy of the vacuum degassing method is mainly related to the degree of vacuum pumping, the system error is large, the detection time is close to one hour because the vacuum degree of a detection inner cavity needs to be checked and an oil sample needs to be preheated before detection every time, only one sample can be detected every time, and the working efficiency is low. At present, in order to improve the situation, there are chinese patent with publication number CN107063920B and publication number 2019.11.29, a device and method for measuring gas content in insulating oil, which directly perform detection by drawing samples with a piston on site, thereby simplifying the detection process, but only one sample can be detected each time, and the work efficiency is low.
Disclosure of Invention
The invention provides a method for detecting the gas content of an oil sample, which can detect a plurality of samples of transformer oil on site at the same time, can improve the detection speed, reduce the detection cost and save the labor.
The technical scheme of the invention is as follows:
a method for detecting gas content of an oil sample comprises the following steps:
s1, preparing equipment: a sealed vessel, a quantitative sampler, a vacuum pumping device, a vacuum degree measuring device and a waste oil collector;
s2, equipment connection: an oil taking valve of the transformer is connected with an oil inlet of a quantitative sampler through an oil pipe, an oil outlet of the quantitative sampler is communicated with a waste oil collector through the oil pipe, an oil outlet of the quantitative sampler is connected with a plurality of branch pipelines, each branch pipeline is correspondingly communicated with an oil inlet of a vessel, an air vent of each vessel is communicated with the same vacuumizing device through the oil pipe, and valves are arranged on each oil pipe and each branch pipeline; two sides of the valve of each branch pipeline are connected with a vacuum degree measuring device;
s3, sampling: before sampling, opening two valves of an oil inlet and an oil outlet of a quantitative sampler, closing the rest valves, opening an oil taking valve of a transformer during sampling, enabling an oil sample to enter the quantitative sampler through the oil inlet, continuously feeding oil after the quantitative sampler is filled with the oil sample, closing the valves of the oil inlet and the oil outlet of the quantitative sampler after the oil outlet of the undetermined quantitative sampler discharges oil with volume M times of the oil sample to a waste oil collector, and closing the oil taking valve of the transformer to finish sampling of the oil sample;
s4, vacuumizing: opening valves at the air vents of all the vessels, starting a vacuumizing device to vacuumize all the vessels simultaneously, and marking the pressure value of each vessel in a segmented manner;
s5, detecting the gas content of the oil sample: opening valves of branch pipelines between the quantitative sampler and all the vessels, enabling the oil sample to completely flow out of the quantitative sampler and respectively flow into each vessel, starting all the vacuum degree measuring devices to measure, reading the vacuum degree of each vacuum degree measuring device, and calculating the gas content value in the insulating oil sample of each vessel according to the vacuum degree and the gas volume of the corresponding vessel;
s6, closing valves of branch pipelines between the quantitative sampler and all the vessels, closing the vacuum degree measuring device, and detaching the branch pipelines between the quantitative sampler and the vessels to discharge the detected oil sample from the oil inlet of the vessels to finish detection.
Further, the gas volume in S5 is obtained from the pressure difference before and after the inside of the vessel.
Furthermore, the valve adopts a hydraulic control one-way valve.
Further, the specific operation manner of the pressure value segment flag in S4 is as follows: and if the pressure value is less than 50Pa, recording the pressure value at the moment as a first pressure value P1, continuing vacuumizing, recording the pressure value at the moment as a second pressure value P2 after X seconds, if N times of X seconds later, and if P2-P1 is more than 1Pa, giving an alarm, and if P2-P1 is less than or equal to 1Pa, next step, wherein N and X are positive integers.
Further, the pressure value is counted again after the valve is closed; and recording once after X seconds, wherein the pressure difference of two times is a pressure rise value, and the front volume change and the rear volume change in the vessel are obtained according to the pressure difference.
Further, the vacuum degree measuring device adopts a vacuum degree tester.
Further, the vacuum-pumping device adopts a vacuum degassing tank.
Further, when the gas content of the oil sample is detected for a plurality of times, the test state of the equipment is kept the same, and the conditions of the test state of the equipment comprise the volume of the quantitative sampler, the temperature in centigrade of the vacuum degassing tank, the thermodynamic temperature of the vacuum degassing tank, the pressure generated by the gas desorbed from the sample oil in the vacuum degassing tank, and the volume of the vacuum degassing tank.
Further, the waste oil collector is a waste oil collecting barrel.
Further, the value range of M in S3 is: m is more than or equal to 2 and less than or equal to 4, wherein M is a positive integer.
The invention has the beneficial effects that:
according to the invention, a plurality of branch sampling pipelines are arranged and connected with the same group of vacuum degree measuring devices, and after sampling, the vacuum degree of an oil sample is ensured and simultaneously the gas content detection of a plurality of sampled oil samples is realized by controlling the valve, so that the efficiency and the speed are high; the invention has simple operation, can complete detection on site only by controlling the valve of the corresponding pipeline according to the detection requirement and starting the vacuum degree measuring device and the vacuumizing device, and saves labor.
Drawings
FIG. 1 is a schematic diagram of the apparatus connection of the present invention;
in the figure: the device comprises a vessel 1, a quantitative sampler 2, a vacuumizing device 3, a vacuum degree measuring device 4, a waste oil collector 5 and a transformer 6.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
Example 1:
as shown in fig. 1, a method for detecting gas content in an oil sample includes the following steps:
s1, preparing equipment: the device comprises a sealed vessel 1, a quantitative sampler 2, a vacuumizing device 3, a vacuum degree measuring device 4 and a waste oil collector 5;
s2, equipment connection: an oil taking valve of the transformer 6 is connected with an oil inlet of the quantitative sampler 2 through an oil pipe, an oil outlet of the quantitative sampler 2 is communicated with a waste oil collector 5 through an oil pipe, an oil outlet of the quantitative sampler 2 is connected with a plurality of branch pipelines, each branch pipeline is correspondingly communicated with an oil inlet of one vessel 1, an air vent of each vessel 1 is communicated with the same vacuumizing device 3 through an oil pipe, and valves are arranged on each oil pipe and each branch pipeline; two sides of the valve of each branch pipeline are connected with a vacuum degree measuring device 4;
s3, sampling: before sampling, two valves of an oil inlet and an oil outlet of the quantitative sampler 2 are opened, other valves are closed, during sampling, an oil taking valve of the transformer 6 is opened, an oil sample enters the quantitative sampler 2 through the oil inlet, the oil sample continues to enter the quantitative sampler 2 after being filled with the quantitative sampler 2, the oil inlet is continued, after the oil outlet of the quantitative sampler 2 to be measured discharges oil with volume M times of the oil to the waste oil collector 5, the valves of the oil inlet and the oil outlet of the quantitative sampler 2 are closed, the oil taking valve of the transformer 6 is closed, and the sampling of the oil sample is completed;
s4, vacuumizing: opening valves at the air vents of all the vessels 1, starting the vacuumizing device 3 to vacuumize all the vessels 1 simultaneously, and marking the pressure value of each vessel 1 in a segmented manner;
s5, detecting the gas content of the oil sample: opening valves of branch pipelines between the quantitative sampler 2 and all the vessels 1, enabling the oil sample to completely flow out of the quantitative sampler 2 and respectively flow into each vessel 1, starting all the vacuum degree measuring devices 4 to measure, reading the vacuum degree of each vacuum degree measuring device 4, and calculating the gas content value in the insulating oil sample of each vessel 1 according to the vacuum degree and the gas volume of the corresponding vessel 1;
s6, closing valves of branch pipelines between the quantitative sampler 2 and all the vessels 1, closing the vacuum degree measuring device 4, and detaching the branch pipelines between the quantitative sampler 2 and the vessels 1, so that the detected oil sample is discharged from the oil inlet of the vessel 1, and the detection is completed.
Wherein the gas volume in S5 is obtained from the pressure difference between the front and the back inside the vessel 1.
In this embodiment, the valve is a pilot operated check valve.
In this embodiment, the specific operation manner of the pressure value segment flag in S4 is as follows: and if the pressure value is less than 50Pa, recording the pressure value at the moment as a first pressure value P1, continuing vacuumizing, recording the pressure value at the moment as a second pressure value P2 after X seconds, if N times of X seconds later, and if P2-P1 is more than 1Pa, giving an alarm, and if P2-P1 is less than or equal to 1Pa, next step, wherein N and X are positive integers. The pressure value is counted again after the valve is closed; and recording once after X seconds, wherein the pressure difference of two times is a pressure rise value, and the front and back volume change in the vessel 1 is obtained according to the pressure difference.
In this embodiment, the vacuum degree measuring device 4 is a vacuum degree tester, and the vacuum pumping device 3 is a vacuum degassing tank.
In this example, when the gas content of the oil sample is detected a plurality of times, the apparatus test state is maintained to be the same, and the conditions of the apparatus test state include the volume of the quantitative sampler 2, the celsius temperature of the vacuum degassing tank, the thermodynamic temperature of the vacuum degassing tank, the pressure of the gas desorbed from the sample oil in the vacuum degassing tank, and the volume of the vacuum degassing tank.
In the present embodiment, the waste oil collector 5 is a waste oil collecting bucket.
In this embodiment, the value range of M in S3 is: m is more than or equal to 2 and less than or equal to 4, wherein M is a positive integer. After the oil appearance is full of quantitative sampler 2, continue the oil feed, the oil drain outlet of undetermined volume sampler 2 discharges the oil mass that self volume M is doubly after waste oil collector 5, closes the valve of 2 oil inlets of quantitative sampler, oil drain outlet two places again, its purpose is in order to discharge the initial stagnant oil that flows of transformer 6 to wash quantitative sampler 2, avoid influencing the work that vacuum measuring device 4 surveyed the vacuum.
Compared with the existing sampling equipment, the sampling equipment is provided with a plurality of branch sampling pipelines which are connected with the same group of vacuum degree measuring devices, and after sampling, the vacuum degree of an oil sample is ensured by controlling the valve, and simultaneously, the gas content detection of a plurality of sampled oil samples is realized, so that the sampling equipment is efficient and rapid; the invention has simple operation, can complete detection on site only by controlling the valve of the corresponding pipeline according to the detection requirement and starting the vacuum degree measuring device and the vacuumizing device, and saves labor.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The method for detecting the gas content of the oil sample is characterized by comprising the following steps of:
s1, preparing equipment: a sealed vessel, a quantitative sampler, a vacuum pumping device, a vacuum degree measuring device and a waste oil collector;
s2, equipment connection: an oil taking valve of the transformer is connected with an oil inlet of a quantitative sampler through an oil pipe, an oil outlet of the quantitative sampler is communicated with a waste oil collector through the oil pipe, an oil outlet of the quantitative sampler is connected with a plurality of branch pipelines, each branch pipeline is correspondingly communicated with an oil inlet of a vessel, an air vent of each vessel is communicated with the same vacuumizing device through the oil pipe, and valves are arranged on each oil pipe and each branch pipeline; two sides of the valve of each branch pipeline are connected with a vacuum degree measuring device;
s3, sampling: before sampling, opening two valves of an oil inlet and an oil outlet of a quantitative sampler, closing the rest valves, opening an oil taking valve of a transformer during sampling, enabling an oil sample to enter the quantitative sampler through the oil inlet, continuously feeding oil after the quantitative sampler is filled with the oil sample, closing the valves of the oil inlet and the oil outlet of the quantitative sampler after the oil outlet of the undetermined quantitative sampler discharges oil with volume M times of the oil sample to a waste oil collector, and closing the oil taking valve of the transformer to finish sampling of the oil sample;
s4, vacuumizing: opening valves at the air vents of all the vessels, starting a vacuumizing device to vacuumize all the vessels simultaneously, and marking the pressure value of each vessel in a segmented manner;
s5, detecting the gas content of the oil sample: opening valves of branch pipelines between the quantitative sampler and all the vessels, enabling the oil sample to completely flow out of the quantitative sampler and respectively flow into each vessel, starting all the vacuum degree measuring devices to measure, reading the vacuum degree of each vacuum degree measuring device, and calculating the gas content value in the insulating oil sample of each vessel according to the vacuum degree and the gas volume of the corresponding vessel;
s6, closing valves of branch pipelines between the quantitative sampler and all the vessels, closing the vacuum degree measuring device, and detaching the branch pipelines between the quantitative sampler and the vessels to discharge the detected oil sample from the oil inlet of the vessels to finish detection.
2. The method as claimed in claim 1, wherein the gas volume in S5 is obtained from the pressure difference between the front and the back of the vessel.
3. The method for detecting the gas content of the oil sample according to claim 1, wherein the valve is a hydraulic control one-way valve.
4. The method for detecting the gas content of the oil sample according to claim 1, wherein the specific operation mode of the pressure value segment flag in the S4 is as follows: and if the pressure value is less than 50Pa, recording the pressure value at the moment as a first pressure value P1, continuing vacuumizing, recording the pressure value at the moment as a second pressure value P2 after X seconds, if N times of X seconds later, and if P2-P1 is more than 1Pa, giving an alarm, and if P2-P1 is less than or equal to 1Pa, next step, wherein N and X are positive integers.
5. The method for detecting the gas content of the oil sample according to claim 4, wherein the pressure value is counted again after the valve is closed; and recording once after X seconds, wherein the pressure difference of two times is a pressure rise value, and the front volume change and the rear volume change in the vessel are obtained according to the pressure difference.
6. The method for detecting the gas content of the oil sample according to claim 1, wherein a vacuum tester is adopted as a vacuum measuring device.
7. The method for detecting the gas content of the oil sample according to claim 1, wherein a vacuum degassing tank is adopted as a vacuumizing device.
8. The method according to claim 7, wherein the apparatus test state is maintained to be the same when the oil sample gas content is tested for a plurality of times, and the apparatus test state conditions include volume of the quantitative sampler, temperature in centigrade of the vacuum degassing tank, thermodynamic temperature of the vacuum degassing tank, pressure of gas generated by the sample oil in the vacuum degassing tank, and volume of the vacuum degassing tank.
9. The method as claimed in claim 1, wherein the waste oil collector is a waste oil collecting barrel.
10. The method for detecting the gas content of the oil sample according to claim 1, wherein the value range of M in S3 is as follows: m is more than or equal to 2 and less than or equal to 4, wherein M is a positive integer.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2439672Y (en) * | 2000-08-01 | 2001-07-18 | 顾国城 | Pressure difference instrument for measuring gas content in oil |
| CN2627495Y (en) * | 2003-06-18 | 2004-07-21 | 诸建华 | Air content determinator of oil |
| CN103499470A (en) * | 2013-09-29 | 2014-01-08 | 广州供电局有限公司 | Sampling device and sampling method for gas content of insulating oil |
| CN104880538A (en) * | 2015-05-30 | 2015-09-02 | 国家电网公司 | Device and method for on-site inspection of online monitor for dissolved gas in transformer oil |
| CN106771093A (en) * | 2016-12-30 | 2017-05-31 | 国家电网公司 | Portable Insulating Oil Breakdown Voltage gassiness tester and its method of testing |
| CN106872613A (en) * | 2015-12-14 | 2017-06-20 | 中国电力科学研究院 | A kind of standard transformer oil sample device for formulating and its operating method |
| CN107063920A (en) * | 2017-03-20 | 2017-08-18 | 国网江苏省电力公司电力科学研究院 | The measurement apparatus and method of a kind of gas content in insulating oil |
| CN107436328A (en) * | 2016-05-25 | 2017-12-05 | 上海金艺检测技术有限公司 | The calibration method of transformer insulation oil on-line chromatograph analyzer |
| CN111398090A (en) * | 2020-04-28 | 2020-07-10 | 广西电网有限责任公司电力科学研究院 | Oil gas measuring device |
| CN111581596A (en) * | 2020-05-29 | 2020-08-25 | 广东电网有限责任公司 | Method for predicting concentration of dissolved gas in transformer oil |
-
2020
- 2020-09-11 CN CN202010956448.6A patent/CN112033852B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2439672Y (en) * | 2000-08-01 | 2001-07-18 | 顾国城 | Pressure difference instrument for measuring gas content in oil |
| CN2627495Y (en) * | 2003-06-18 | 2004-07-21 | 诸建华 | Air content determinator of oil |
| CN103499470A (en) * | 2013-09-29 | 2014-01-08 | 广州供电局有限公司 | Sampling device and sampling method for gas content of insulating oil |
| CN104880538A (en) * | 2015-05-30 | 2015-09-02 | 国家电网公司 | Device and method for on-site inspection of online monitor for dissolved gas in transformer oil |
| CN106872613A (en) * | 2015-12-14 | 2017-06-20 | 中国电力科学研究院 | A kind of standard transformer oil sample device for formulating and its operating method |
| CN107436328A (en) * | 2016-05-25 | 2017-12-05 | 上海金艺检测技术有限公司 | The calibration method of transformer insulation oil on-line chromatograph analyzer |
| CN106771093A (en) * | 2016-12-30 | 2017-05-31 | 国家电网公司 | Portable Insulating Oil Breakdown Voltage gassiness tester and its method of testing |
| CN107063920A (en) * | 2017-03-20 | 2017-08-18 | 国网江苏省电力公司电力科学研究院 | The measurement apparatus and method of a kind of gas content in insulating oil |
| CN111398090A (en) * | 2020-04-28 | 2020-07-10 | 广西电网有限责任公司电力科学研究院 | Oil gas measuring device |
| CN111581596A (en) * | 2020-05-29 | 2020-08-25 | 广东电网有限责任公司 | Method for predicting concentration of dissolved gas in transformer oil |
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| CN112033852B (en) | 2023-11-07 |
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