CN111790279A - Device for removing and dissolving gas in oil - Google Patents
Device for removing and dissolving gas in oil Download PDFInfo
- Publication number
- CN111790279A CN111790279A CN202010507451.XA CN202010507451A CN111790279A CN 111790279 A CN111790279 A CN 111790279A CN 202010507451 A CN202010507451 A CN 202010507451A CN 111790279 A CN111790279 A CN 111790279A
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- gas
- oil
- tank body
- electromagnetic valve
- liquid
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- 239000007788 liquid Substances 0.000 claims abstract description 65
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- 239000002699 waste material Substances 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 138
- 238000010438 heat treatment Methods 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 9
- 238000007872 degassing Methods 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 239000012774 insulation material Substances 0.000 claims description 3
- 239000010979 ruby Substances 0.000 claims description 3
- 229910001750 ruby Inorganic materials 0.000 claims description 3
- 239000012224 working solution Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 8
- 238000002360 preparation method Methods 0.000 description 7
- 238000004090 dissolution Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Degasification And Air Bubble Elimination (AREA)
Abstract
The invention discloses a device for removing and dissolving gas in oil, which comprises: jar body, mechanical vacuum pump, pressurization system, air entrainment system, wherein: the tank body is connected with a gas filling system, and a steel cylinder gas on the gas filling system is connected with the tank body through a gas flowmeter, a gas electromagnetic valve and a gas electromagnetic valve in the gas filling system; a pressurizing system is arranged at the top of the tank body; the mechanical vacuum pump is connected with the tank body through a third gas electromagnetic valve and a vacuum gauge; the waste liquid in the tank body is connected with an oil discharge port on the tank body through a third liquid two-way electromagnetic valve; the oil inlet pump is connected with an oil outlet on the tank body through a liquid three-way electromagnetic valve. In the embodiment of the invention, the standard working solution which has the same oil gas content with the equipment body and is suitable for the calibration of the online chromatograph is formed, the pressure of the whole system is adjusted by the piston pressurization system, and the standard working solution with different concentrations can be prepared.
Description
Technical Field
The invention relates to the technical field of gas removal and dissolution, in particular to a device for removing and dissolving gas in oil.
Background
Analysis of dissolved gases in insulating oil using gas chromatography (DGA) is recognized by various countries around the world as the most effective method for monitoring and diagnosing early failure in oil-filled electrical equipment. With the advance of charged detection and state maintenance work, various detection devices for dissolved gas in insulating oil, such as on-line monitoring, portable detection and the like, are widely applied, and by preparing standard samples of insulating oil and taking laboratory test data as a reference, the development of network access inspection and periodic verification work on the devices is increasingly emphasized by operation and management units. For the on-line chromatographic monitoring system installed on the transformer, the most basic is to evaluate the test accuracy of the on-line chromatograph in real time.
Analysis of dissolved gas in insulating oil requires that gas be removed from the insulating oil, in contrast to formulating standard working oil of insulating oil, which is a process that allows the gas to be sufficiently dissolved in the insulating oil. The method aims to solve the problem of how to accurately prepare the oil sample with the concentration meeting the requirement from the existing oil sample, and relates to the preparation of standard working oil.
The standard working oil is generally prepared from blank oil at normal pressure and a certain temperature, and the blank oil cannot be completely sealed in the process of preparing the standard oil, so that the gas content in the oil is increased and even saturated, particularly CO and CO contained in the air2And the accuracy of the standard oil preparation concentration is influenced by the target gas. The ideal standard working oil should have a gas content as much as possible consistent with that of the bulk oil, which requires that the white oil should be degassed as completely as possible and that the working oil gas content be adjusted by injecting a quantity of balance gas. In addition, the existing preparation devices are all carried out under normal pressure, so that the standard working solution with high concentration is difficult to prepare or has poor accuracy.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a device for removing and dissolving gas in oil, and solves the problem that blank oil with high gas content is conveyed to a preparation device, and the oil is further degassed through the vacuum pumping and the internal circulation of the oil; the gas content and the target component concentration of the oil product can be adjusted by adding standard gas, the system pressure is adjusted by an electrically driven piston pressurization system, and the prepared standard liquid is subjected to internal circulation by an oil inlet pump, so that the preparation of the high, medium and low concentration standard working liquid is completed.
In order to solve the above technical problem, an embodiment of the present invention provides an apparatus for removing and dissolving gas in oil, including: jar body, mechanical vacuum pump, pressurization system, air entrainment system, wherein:
an oil inlet is formed in the tank body, an oil inlet pipeline connected with the oil inlet is connected with the tank body through a liquid three-way electromagnetic valve, an oil inlet pump, a liquid flow meter and a first liquid two-way electromagnetic valve, oil inlet of the inlet pipeline is controlled by two ends of the liquid three-way electromagnetic valve, and a third end of the liquid three-way electromagnetic valve is connected with an oil outlet in the tank body;
the tank body is connected with a gas filling system, and a steel cylinder gas on the gas filling system is connected with the tank body through a gas flowmeter, a gas electromagnetic valve and a gas electromagnetic valve in the gas filling system;
a pressurizing system is arranged at the top of the tank body;
the mechanical vacuum pump is connected with the tank body through a third gas electromagnetic valve and a vacuum gauge;
the oil outlet of the tank body is connected with the oil outlet of the tank body through an oil outlet pump, a second liquid two-way electromagnetic valve, a liquid flow meter and an oil outlet of the tank body;
the waste liquid in the tank body is connected with an oil discharge port on the tank body through a third liquid two-way electromagnetic valve;
the oil inlet pump is connected with an oil outlet on the tank body through a liquid three-way electromagnetic valve;
the heating device is arranged in the tank body, the pressure sensor and the oil temperature probe are arranged on the tank body, and the heat insulation material is arranged outside the tank body.
The heating device is arranged in an array structure, the array heating device is provided with a plurality of layers, and each layer is provided with a plurality of heating elements.
The vacuum gauge adopts an ionization gauge.
The pressure releaser adopts a ruby high-pressure releaser.
The pressurization system adopts an electric driving piston pressurization system.
The gas filling system is provided with three independent gas filling pipelines.
The steel cylinder gas in the nitrogen steel cylinder on the first path of gas filling pipe is connected with the tank body through a first gas flowmeter, a first gas electromagnetic valve and a second gas electromagnetic valve;
the steel cylinder gas in the standard gas steel cylinder on the second gas filling pipe is connected with the tank body through a second gas flowmeter, a sixth gas electromagnetic valve and a second gas electromagnetic valve;
and the steel cylinder gas in the standard gas steel cylinder on the third gas filling pipe is connected with the tank body through a third gas flowmeter, a fourth gas electromagnetic valve and a second gas electromagnetic valve.
And a fifth gas electromagnetic valve is also arranged at the tail end of the gas circuit connection on the gas filling system.
And the oil in the tank body realizes the internal circulation of the tank body through the oil inlet pump, the liquid flowmeter, the first liquid two-way electromagnetic valve and the liquid three-way electromagnetic valve.
In the embodiment of the invention, the device for removing and dissolving the gas in the oil is used for further degassing the entering oil product with high gas content by vacuumizing and internal circulation, adding the standard gas, adjusting the gas content in the oil by balance gas, repeatedly compressing the whole system by using an electrically driven piston pressurization system, generating turbulence by matching with high-speed disturbance of an oil pump during the internal circulation, realizing uniform dissolution of gas components in the oil and obtaining the standard working oil. The problem of accuracy of the preparation of the blank oil with high gas content is solved; in addition, the accurate preparation of the high, medium and low concentration standard working oil is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an apparatus for stripping and dissolving gas in oil according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of an apparatus for gas stripping and dissolution in oil according to an embodiment of the present invention, the apparatus for gas stripping and dissolution in oil comprising: the device comprises a tank body 1, a pressurization system 2, an oil inlet pump 3, a liquid flow meter 4, a liquid two-way electromagnetic valve 5, an oil temperature probe 6, a pressure sensor 7, a vacuum gauge 8, a gas electromagnetic valve 9, a mechanical vacuum pump 10, gas electromagnetic valves 11-13, gas flow meters 14-16, liquid two-way electromagnetic valves 17-18, a liquid three-way electromagnetic valve 19, an oil outlet pump 20, a liquid flow meter 21, a heating device 22, a pressure releaser 23, a nitrogen steel cylinder 24, standard gas steel cylinders 25-26 and gas electromagnetic valves 27-28.
The tank body 1 is a relatively sealed space, an oil inlet is arranged on the tank body 1, an oil inlet pipeline connected with the oil inlet is connected with the tank body 1 through a liquid three-way electromagnetic valve 19, an oil inlet pump 3, a liquid flow meter 4 and a first liquid two-way electromagnetic valve 5, two ends of the liquid three-way electromagnetic valve 19 control oil inlet of an inlet pipeline, and a third end of the liquid three-way electromagnetic valve 19 is connected with an oil outlet on the tank body 1.
The air entrainment system is equipped with three routes of independent air entrainment pipelines, wherein: the cylinder gas in the nitrogen gas cylinder 24 on the first gas filling pipe is connected with the tank body 1 through a first gas flowmeter 14, a first gas electromagnetic valve 11 and a second gas electromagnetic valve 28. The cylinder gas in the standard gas cylinder 25 on the second gas filling pipe is connected with the tank body 1 through a second gas flowmeter 15, a sixth gas electromagnetic valve 12 and a second gas electromagnetic valve 28. The cylinder gas in the standard gas cylinder 26 on the third gas filling pipe is connected with the tank body 1 through a third gas flowmeter 15, a fourth gas electromagnetic valve 13 and a second gas electromagnetic valve 28. And a fifth gas electromagnetic valve 27 is also arranged at the tail end of the gas circuit connection on the gas filling system.
The mechanical vacuum pump 10 is connected with the tank body 1 through a third gas electromagnetic valve 9 and a vacuum gauge 8; a pressurizing system 2 is arranged at the top of the tank body 1; the pressure releaser 23 is connected with the tank body 1; the oil outlet is connected with an oil discharge port on the tank body 1 through an oil outlet pump 20, a second liquid two-way electromagnetic valve 18 and a liquid flowmeter 21; the waste liquid on the oil discharge port is connected with the oil discharge port on the tank body 1 through a third liquid two-way electromagnetic valve 17; the oil inlet pump 3 is connected with an oil discharge port on the tank body 1 through a liquid three-way electromagnetic valve 19; the heating device 22 is arranged in the tank body 1, the pressure sensor 7 and the oil temperature probe 6 are arranged on the tank body 1, and the heat insulation material is arranged outside the tank body 1.
The heating device 22 is arranged in an array structure, and the array heating device 22 is provided with a plurality of layers and each layer is provided with a plurality of heating elements.
The vacuum gauge 8 adopts an ionization gauge.
The pressure releaser 23 adopts a ruby high-pressure releaser.
The pressurization system 2 adopts an electric driving piston pressurization system.
The oil in the embodiment of the invention can realize internal circulation between the oil inlet and the oil outlet through the oil inlet pump 3, the liquid flowmeter 4, the first liquid two-way electromagnetic valve 5 and the liquid three-way electromagnetic valve 19, thereby realizing the internal circulation in the tank body.
Still be provided with the two solenoid valve 17 of third liquid on this jar body 1, this two solenoid valve 17 of third liquid is controlled the waste liquid discharge in jar body 1, and this two solenoid valve 17 of third liquid is located jar body 1's bottom, has ensured that the waste liquid flows from jar body 1 bottom easily, and this jar body 1 bottom has the waste liquid discharge port.
In the specific implementation process, when the standard working oil is manufactured, the heating device is started to heat to a set value, the vacuum pump is started to vacuumize the tank body, the oil inlet pump is started to input oil, internal circulation is started after a certain volume is reached, and the oil is further degassed in the vacuum tank body; after the standard gas is added, the electrically-driven piston pressurizing device is started to repeatedly adjust the pressure of the system, and meanwhile, the internal circulation is started to mix the oil and the gas, the oil and the gas are stirred in the circulation space and are compressed and diffused in the tank body for multiple times, so that the gas is dissolved in the oil. Note that the tank pressure is eventually maintained at a constant value and output.
The specific implementation process is as follows:
(1) setting the heating temperature of the tank body to be 50 ℃, starting the heating device 22, and raising the temperature in the tank body 1 to a set value;
(2) opening a vacuum gauge 8 and a gas electromagnetic valve 9, starting a vacuum pump 10, and vacuumizing the tank body 1;
(3) after the temperature rises to a set value, opening the liquid three-way electromagnetic valve 19, starting the oil inlet pump 3, simultaneously opening the liquid two-way electromagnetic valve 5 and the liquid flowmeter 4, and switching the liquid three-way electromagnetic valve 19 to perform internal circulation degassing after oil inlet is completed;
(4) after degassing is finished, stopping the oil inlet pump 3 and the vacuum pump 10, and closing the liquid two-way electromagnetic valve 5, the liquid flowmeter 4, the liquid three-way electromagnetic valve 19 and the gas electromagnetic valve 9;
(5) opening the nitrogen steel cylinder 24, the gas flowmeter 14, the gas electromagnetic valve 11 and the gas electromagnetic valve 27, purging the pipeline and then closing the pipeline;
(6) opening one path of standard gas (in this example, one path of the standard gas steel cylinder 25 is taken as an example) steel cylinder 25, gas flowmeter 15, gas electromagnetic valve 12 and gas electromagnetic valve 28, adding gas to a set value, and then closing;
(7) and starting a pressurizing 2 system to pressurize the system, simultaneously opening a liquid three-way electromagnetic valve 19, a liquid two-way electromagnetic valve 5 and a liquid flowmeter 4, starting an oil inlet pump 3 to circulate, compressing and diffusing oil and gas for multiple times, and closing the gas after dissolving the gas in the oil for standby.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic or optical disk, or the like.
In addition, the above embodiments of the present invention are described in detail, and the principle and the implementation manner of the present invention should be described herein by using specific examples, and the above description of the embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (9)
1. An apparatus for stripping and dissolving gas in oil, comprising: jar body, mechanical vacuum pump, pressurization system, air entrainment system, wherein:
an oil inlet is formed in the tank body, an oil inlet pipeline connected with the oil inlet is connected with the tank body through a liquid three-way electromagnetic valve, an oil inlet pump, a liquid flow meter and a first liquid two-way electromagnetic valve, oil inlet of the inlet pipeline is controlled by two ends of the liquid three-way electromagnetic valve, and a third end of the liquid three-way electromagnetic valve is connected with an oil outlet in the tank body;
the tank body is connected with a gas filling system, and a steel cylinder gas on the gas filling system is connected with the tank body through a gas flowmeter, a gas electromagnetic valve and a gas electromagnetic valve in the gas filling system;
a pressurizing system is arranged at the top of the tank body;
the mechanical vacuum pump is connected with the tank body through a third gas electromagnetic valve and a vacuum gauge;
the oil outlet of the tank body is connected with the oil outlet of the tank body through an oil outlet pump, a second liquid two-way electromagnetic valve, a liquid flow meter and an oil outlet of the tank body;
the waste liquid in the tank body is connected with an oil discharge port on the tank body through a third liquid two-way electromagnetic valve;
the oil inlet pump is connected with an oil outlet on the tank body through a liquid three-way electromagnetic valve;
the heating device is arranged in the tank body, the pressure sensor and the oil temperature probe are arranged on the tank body, and the heat insulation material is arranged outside the tank body.
2. The gas stripping and oil dissolving apparatus of claim 1 wherein the heating means is arranged in an array configuration with multiple layers and multiple heating elements per layer.
3. The apparatus for degassing and dissolving a gas in oil of claim 1 wherein said vacuum gauge comprises an ionization gauge.
4. The gas evolving and oil dissolving apparatus of claim 1 wherein said pressure release is a ruby high pressure release.
5. The apparatus for degassing and dissolving a gas in oil of claim 1 wherein said pressurization system comprises an electrically driven piston pressurization system.
6. The apparatus for stripping and dissolving gas in oil as claimed in claim 1, wherein said gas-filling system is provided with three independent gas-filling lines.
7. The apparatus for stripping and dissolving gas in oil as claimed in claim 6, wherein the cylinder gas in the nitrogen cylinder on the first gas filling pipe is connected to the tank through a first gas flow meter, a first gas solenoid valve, a second gas solenoid valve;
the steel cylinder gas in the standard gas steel cylinder on the second gas filling pipe is connected with the tank body through a second gas flowmeter, a sixth gas electromagnetic valve and a second gas electromagnetic valve;
and the steel cylinder gas in the standard gas steel cylinder on the third gas filling pipe is connected with the tank body through a third gas flowmeter, a fourth gas electromagnetic valve and a second gas electromagnetic valve.
8. The apparatus for stripping and dissolving gas in oil as claimed in claim 6, wherein the gas-filling system is further provided with a fifth gas solenoid valve at the end of the gas path connection.
9. The apparatus for degassing and dissolving a gas in oil as claimed in claim 1, wherein the oil in said tank is circulated in said tank by an oil feed pump, a liquid flow meter, a first liquid two-way solenoid valve, and a liquid three-way solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010507451.XA CN111790279A (en) | 2020-06-05 | 2020-06-05 | Device for removing and dissolving gas in oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010507451.XA CN111790279A (en) | 2020-06-05 | 2020-06-05 | Device for removing and dissolving gas in oil |
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| Publication Number | Publication Date |
|---|---|
| CN111790279A true CN111790279A (en) | 2020-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010507451.XA Pending CN111790279A (en) | 2020-06-05 | 2020-06-05 | Device for removing and dissolving gas in oil |
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| Country | Link |
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| CN (1) | CN111790279A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113578080A (en) * | 2021-07-20 | 2021-11-02 | 广西电网有限责任公司电力科学研究院 | Device for preparing standard working solution of transformer oil by bidirectional pressurization |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090308253A1 (en) * | 2006-02-15 | 2009-12-17 | National University Corporation Okayama University | Deaerating and Dissolving Apparatus, and Deaerating and Dissolving Method |
| CN103616274A (en) * | 2013-11-28 | 2014-03-05 | 国家电网公司 | Pretreatment device and pretreatment method for transformer oil |
| CN104028152A (en) * | 2014-06-23 | 2014-09-10 | 昆山和智电气设备有限公司 | Device for uniformly mixing gas and liquid |
| CN205301253U (en) * | 2015-12-30 | 2016-06-08 | 国家电网公司 | Vary voltage oil on -line monitoring device calibration system |
| CN107290201A (en) * | 2017-06-22 | 2017-10-24 | 南瑞通用电气智能监测诊断（武汉）有限公司 | A kind of standard oil sample automatic preparing device |
-
2020
- 2020-06-05 CN CN202010507451.XA patent/CN111790279A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090308253A1 (en) * | 2006-02-15 | 2009-12-17 | National University Corporation Okayama University | Deaerating and Dissolving Apparatus, and Deaerating and Dissolving Method |
| CN103616274A (en) * | 2013-11-28 | 2014-03-05 | 国家电网公司 | Pretreatment device and pretreatment method for transformer oil |
| CN104028152A (en) * | 2014-06-23 | 2014-09-10 | 昆山和智电气设备有限公司 | Device for uniformly mixing gas and liquid |
| CN205301253U (en) * | 2015-12-30 | 2016-06-08 | 国家电网公司 | Vary voltage oil on -line monitoring device calibration system |
| CN107290201A (en) * | 2017-06-22 | 2017-10-24 | 南瑞通用电气智能监测诊断（武汉）有限公司 | A kind of standard oil sample automatic preparing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113578080A (en) * | 2021-07-20 | 2021-11-02 | 广西电网有限责任公司电力科学研究院 | Device for preparing standard working solution of transformer oil by bidirectional pressurization |
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Application publication date: 20201020 |
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