CN210674325U - High-efficient degasser based on vacuum - Google Patents
High-efficient degasser based on vacuum Download PDFInfo
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- CN210674325U CN210674325U CN201920980951.8U CN201920980951U CN210674325U CN 210674325 U CN210674325 U CN 210674325U CN 201920980951 U CN201920980951 U CN 201920980951U CN 210674325 U CN210674325 U CN 210674325U
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Abstract
The utility model discloses a vacuum-based high-efficiency degassing device, which is characterized by comprising an oil cylinder, an oil circuit liquid level monitoring structure, a gas storage structure, an oil circuit quantitative chamber structure and a vacuum degassing control structure; the oil circuit quantitative chamber structure, the oil cylinder, the oil circuit liquid level monitoring structure and the gas storage structure are sequentially arranged, and the vacuum degassing control structure comprises a plurality of electromagnetic valves which are used for respectively controlling the input and output on-off of the oil cylinder, the oil circuit liquid level monitoring structure, the gas storage structure and the oil circuit quantitative chamber structure. The advantages are that: the gas can be ensured not to be polluted completely in the oil-gas separation process, and the reliability of the gas entering the chromatographic column is ensured; the volume of the insulating oil entering the oil cylinder and the volume of the insulating oil degassed each time are consistent, so that the consistency and the accuracy of measurement are guaranteed; the conventional vacuum pumping mode of a vacuum pump is abandoned, and the degassing efficiency is improved.
Description
Technical Field
The utility model relates to a fields such as transformer substation's oil chromatogram on-line monitoring, vacuum degassing, concretely relates to high-efficient degasser based on vacuum improves transformer substation's oil chromatogram on-line monitoring device's degasification efficiency and stability.
Background
The large transformer is one of core devices of the whole power system as a main device for electric energy transmission, and the safe and stable operation of the large transformer is very important. Due to various reasons, malignant faults of equipment occur sometimes, once serious faults occur, power failure must be carried out for maintenance, the safe and stable operation of a power grid is seriously influenced, and great economic loss is caused. The on-line monitoring device for the dissolved gas in the transformer oil can monitor the running state of the large transformer on line in real time, and can master the running state of equipment at any time and find and diagnose internal faults in time by analyzing the characteristic gas concentration in the oil. The degassing mode of the oil chromatography device in the current market has the problems of poor stability, low degassing efficiency and the like, seriously influences the reliability of data of the oil chromatography device, and brings great inconvenience to the popularization of the oil chromatography device and the stable operation of a transformer.
Disclosure of Invention
The utility model aims to solve the technical problem that the defect of prior art is overcome, provide one kind.
In order to solve the technical problem, the utility model provides a vacuum-based high-efficiency degasser, which comprises an oil cylinder, an oil circuit liquid level monitoring structure, a gas storage structure, an oil circuit quantitative chamber structure and a vacuum degassing control structure;
the vacuum degassing control structure comprises a plurality of electromagnetic valves for respectively controlling the oil cylinder, the oil circuit liquid level monitoring structure, the gas storage structure, the oil circuit quantitative chamber structure and input and output on-off;
the oil circuit liquid level monitoring structure is used for monitoring whether oil is pumped into the oil circuit or not in real time and monitoring whether insulating oil exists in gas which is exhausted and enters the gas chamber or not;
the gas storage structure is used for storing the mixed gas separated from the oil and is used for sample introduction of a chromatographic column;
the oil way quantifying chamber structure is used for quantifying the volume of the insulating oil entering the oil cylinder;
the vacuum degassing control structure is used for controlling the gas flow direction and the oil path flow direction.
Furthermore, the oil cylinder is provided with a piston, and oil inlet and oil discharge of the oil cylinder are realized through movement of the piston
Furthermore, the oil circuit liquid level monitoring structure comprises a first photoelectric liquid level sensor and a second photoelectric liquid level sensor which are sequentially arranged between the oil cylinder and the gas storage structure.
Further, the gas storage structure includes a volumetric gas chamber.
Further, the air chamber is a stainless steel air chamber.
Furthermore, the oil path quantitative chamber structure adopts a small oil cylinder with a fixed volume.
Furthermore, the oil circuit quantitative chamber structure, the oil cylinder, the oil circuit liquid level monitoring structure and the gas storage structure are connected through stainless steel pipes, and the oil circuit liquid level monitoring structure and the gas storage structure are connected through stainless steel pipes.
The utility model discloses the beneficial effect who reaches:
the utility model monitors the liquid level condition in the oil circuit and monitors whether the insulating oil exists in the gas entering the air chamber through the oil circuit liquid level monitoring structure, thereby ensuring that the gas can not be polluted completely in the oil-gas separation process and ensuring the reliability of the gas entering the chromatographic column;
the utility model adopts a gas storage structure and an oil circuit quantitative chamber structure with fixed volume, thereby ensuring that the volume degassed each time and the volume of the insulating oil entering the oil cylinder are consistent, and ensuring the consistency and accuracy of measurement;
the utility model discloses a vacuum degassing control structure has abandoned conventional vacuum pump extraction vacuum mode, improves degasification efficiency.
Drawings
Fig. 1 is a simplified schematic diagram of the structure of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, a vacuum-based high-efficiency degasser comprises a first photoelectric liquid level sensor 1, a second photoelectric liquid level sensor 2, an oil cylinder, a quantitative chamber (a fixed volume small oil cylinder with the capacity smaller than that of the oil cylinder), an air chamber, two-way electromagnetic valves V1, V2, V3, V4, V5, V6, V7 and a three-way electromagnetic valve V8;
one end of the electromagnetic valve V1 and one end of the electromagnetic valve V3 are respectively connected with an input port of an oil cylinder, the other end of the electromagnetic valve V1 is connected with transformer oil, the other end of the electromagnetic valve V3 is connected with a quantitative chamber (the quantitative chamber has the functions of quantification and oil storage, the middle part of the oil cylinder is also provided with a positioning switch which is used for quantifying the volume of an oil sample and is equal to the volume of the quantitative chamber, when a piston moves from left to right to the positioning switch at the middle part of the oil cylinder, the oil input by the oil cylinder is just the amount which can be stored by the quantitative chamber, the quantitative chamber is used for storing the oil sample in the subsequent repeated degassing process), a first output port at the lower end of the oil cylinder is provided with an electromagnetic valve V2, a second output port above the oil cylinder is provided with a first photoelectric liquid level sensor 1, an input port of an air chamber is provided with a second photoelectric liquid, the input port of the first stainless steel chamber is connected with the second output port of the oil cylinder, the output port of the first stainless steel chamber is respectively connected with one end of a solenoid valve V4 and one end of a solenoid valve V5, the other end of the solenoid valve V5 is emptied, the other end of the solenoid valve V4 is connected with the input port of the second stainless steel chamber, the output port of the first stainless steel chamber is connected with one end of a solenoid valve V6, the output port of the solenoid valve V6 is respectively connected with one end of an air chamber and a three-way solenoid valve V8, the other end of the air chamber is connected with one end of a solenoid valve V7, the other end of the solenoid valve V7 is connected with the second.
The device does not have power devices such as an oil pump, an air pump and the like, oil inlet and oil discharge are carried out through piston movement, the piston moves rightwards to open an oil inlet valve, insulating oil enters the oil cylinder, the insulating oil in the oil cylinder can be in a vacuum state continuously rightwards, and separation of mixed gas in the oil is realized. The piston moves leftwards, the insulating oil can be discharged by opening the oil return valve, and the separated mixed gas can enter the gas chamber by opening the valve related to the gas chamber. The vacuum degassing device has the advantages that the piston principle of the oil cylinder and the principle of realizing vacuum degassing by opening and closing the electromagnetic valve are adopted, the conventional vacuum pump vacuum pumping mode is abandoned, and the degassing efficiency is improved;
the quantitative chamber is used for quantifying the volume of the insulating oil entering the oil cylinder, so that the insulating oil entering the oil cylinder at each time is quantified, the same sample is extracted by the system at each time, and the measuring accuracy is guaranteed.
The gas chamber is used for storing the mixed gas separated from the oil, and finally the mixed gas enters the gas chromatograph for analysis through opening of the related valve, so that automatic sample introduction is realized.
The first liquid level sensor and the second liquid level sensor are used for detecting whether insulating oil exists in gas which is evacuated and enters the gas chamber or not, and play a role in judging the on-off of related valves in the running process of the system.
The electromagnetic valve is used for realizing the on-off of the oil path and the gas path in the system through the on-off of the electromagnetic valve.
The working steps of the utility model are as follows:
resetting: firstly, the electromagnetic valve V5 is opened, other electromagnetic valves are kept closed, the piston of the oil cylinder moves to the left, when the first liquid level switch above the oil cylinder detects liquid, the electromagnetic valve V5 is closed, the electromagnetic valve V2 is opened, the piston continues to move to the left, and oil flows out from the oil return port.
The gas path cleaning process comprises the following steps: opening electromagnetic valve V4 and electromagnetic valve V6, keeping other electromagnetic valves closed, moving the oil cylinder piston to the rightmost side, closing electromagnetic valve V4 and electromagnetic valve V6, opening electromagnetic valve V5, moving the oil cylinder piston to the leftmost side, closing electromagnetic valve V5, repeating for multiple times, cleaning the air path, and at this time, the air chamber is in a vacuum state.
An oil way cleaning process: opening the electromagnetic valve V5, keeping other electromagnetic valves closed, moving the oil cylinder piston to the right to a middle stop point, closing the electromagnetic valve V5, and continuously moving the oil cylinder piston to the rightmost side; first opening the solenoid valve V3 and then closing the solenoid valve V3 for cleaning the section of oil present in connection with the dosing chamber, in particular when the oil remains in the dosing chamber; opening solenoid valve V1 and solenoid valve V2, then closing solenoid valve V2, and cleaning the section of oil present in connection with solenoid valve V2; closing the solenoid valve V1 after a period of time, and cleaning the oil existing in the section connected with the solenoid valve V1; and opening the electromagnetic valve V5, moving the piston of the oil cylinder to the left, closing the electromagnetic valve V5 to open the electromagnetic valve V2 when the first liquid level switch above the oil cylinder detects liquid, continuing moving the piston to the left, and enabling the oil to flow out from the oil return port. Repeating the steps for multiple times to clean the oil circuit.
Degassing: opening the electromagnetic valve V1, keeping other electromagnetic valves closed, feeding oil into the oil cylinder, moving the piston of the oil cylinder to the middle stop point, and quantitatively taking an oil sample to be detected; closing the electromagnetic valve V1, opening the electromagnetic valve V3, moving the oil cylinder piston to the leftmost side, and quantitatively taking oil; closing the electromagnetic valve V3, and storing the obtained quantitative oil sample; opening the electromagnetic valve V3, moving the oil cylinder piston to the rightmost side, providing a vacuum environment in the oil cylinder, and providing conditions for degassing; closing the electromagnetic valve V3, opening the electromagnetic valve V4 and the electromagnetic valve V6, moving the oil cylinder piston to the left to a middle stop point, and storing the separated sample gas; closing the electromagnetic valve V4 and the electromagnetic valve V6, opening the electromagnetic valve V3, moving the oil cylinder piston to the leftmost side, closing the electromagnetic valve V3, and storing the obtained quantitative oil sample; opening the electromagnetic valve V3, moving the oil cylinder piston to the rightmost side, providing a vacuum environment in the oil cylinder, and providing conditions for degassing; closing the electromagnetic valve V3, opening the electromagnetic valve V4 and the electromagnetic valve V6, detecting whether oil passes through by the second liquid level sensor, stopping working if oil passes through the second liquid level sensor, preventing the oil from entering the air chamber, moving the oil cylinder piston to the middle stop point if the oil does not pass through the second liquid level sensor, and storing the separated sample gas; closing the electromagnetic valve V4 and the electromagnetic valve V6, opening the electromagnetic valve V2, moving the oil cylinder piston to the leftmost side, closing the electromagnetic valve V2, and returning the oil sample after degassing. Repeating the steps for many times, and collecting the removed characteristic gas in the gas chamber.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (7)
1. A vacuum-based efficient degassing device is characterized by comprising an oil cylinder, an oil circuit liquid level monitoring structure, a gas storage structure, an oil circuit quantitative chamber structure and a vacuum degassing control structure;
the vacuum degassing control structure comprises a plurality of electromagnetic valves for respectively controlling the input and output on-off of the oil cylinder, the oil circuit liquid level monitoring structure, the gas storage structure and the oil circuit quantitative chamber structure;
the oil circuit liquid level monitoring structure is used for monitoring whether oil is pumped into the oil circuit or not in real time and monitoring whether insulating oil exists in gas which is exhausted and enters the gas chamber or not;
the gas storage structure is used for storing the mixed gas separated from the oil and is used for sample introduction of a chromatographic column;
the oil way quantifying chamber structure is used for quantifying the volume of the insulating oil entering the oil cylinder;
the vacuum degassing control structure is used for controlling the gas flow direction and the oil path flow direction.
2. The vacuum-based efficient degassing device according to claim 1, wherein the oil cylinder is provided with a piston, and oil feeding and oil discharging of the oil cylinder are realized through movement of the piston.
3. The vacuum-based high-efficiency degasser of claim 1, wherein said oil line level monitoring structure comprises a first photoelectric level sensor, a second photoelectric level sensor sequentially disposed between the cylinder and the gas storage structure.
4. The vacuum-based high efficiency degasser of claim 1 wherein said gas storage structure comprises a volumetric gas chamber.
5. The vacuum-based high efficiency degasser of claim 4 wherein said plenum is a stainless steel plenum.
6. The vacuum-based high efficiency degasser of claim 1 wherein said oil metering chamber structure employs a small oil cylinder of constant volume.
7. The vacuum-based high-efficiency degassing device according to claim 1, wherein the oil-way quantitative chamber structure, the oil cylinder, the oil-way liquid level monitoring structure and the gas storage structure are connected with the electromagnetic valve through stainless steel pipes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920980951.8U CN210674325U (en) | 2019-06-27 | 2019-06-27 | High-efficient degasser based on vacuum |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920980951.8U CN210674325U (en) | 2019-06-27 | 2019-06-27 | High-efficient degasser based on vacuum |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112147100A (en) * | 2020-10-14 | 2020-12-29 | 海南电网有限责任公司电力科学研究院 | Portable device for detecting furfural in transformer oil |
| AT523841B1 (en) * | 2020-10-19 | 2021-12-15 | Omicron Electronics Gmbh | Device and method for degassing a device and corresponding test system for gas analysis |
-
2019
- 2019-06-27 CN CN201920980951.8U patent/CN210674325U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112147100A (en) * | 2020-10-14 | 2020-12-29 | 海南电网有限责任公司电力科学研究院 | Portable device for detecting furfural in transformer oil |
| CN112147100B (en) * | 2020-10-14 | 2023-11-14 | 海南电网有限责任公司电力科学研究院 | Portable device for detecting furfural in transformer oil |
| AT523841B1 (en) * | 2020-10-19 | 2021-12-15 | Omicron Electronics Gmbh | Device and method for degassing a device and corresponding test system for gas analysis |
| AT523841A4 (en) * | 2020-10-19 | 2021-12-15 | Omicron Electronics Gmbh | Device and method for degassing a device and corresponding test system for gas analysis |
| WO2022084042A1 (en) * | 2020-10-19 | 2022-04-28 | Omicron Electronics Gmbh | Apparatus and method for degassing a device, and corresponding test system for gas analysis |
| WO2022084041A1 (en) * | 2020-10-19 | 2022-04-28 | Omicron Electronics Gmbh | Apparatus and method for degassing a device, and corresponding test system for gas analysis |
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