CN114188126A - Oil filtering system and method based on transformer on-load switch - Google Patents
Oil filtering system and method based on transformer on-load switch Download PDFInfo
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- CN114188126A CN114188126A CN202111286626.XA CN202111286626A CN114188126A CN 114188126 A CN114188126 A CN 114188126A CN 202111286626 A CN202111286626 A CN 202111286626A CN 114188126 A CN114188126 A CN 114188126A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Analytical Chemistry (AREA)
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- Transformer Cooling (AREA)
Abstract
The utility model provides an oil strain system and method based on transformer on-load switch, relates to transformer oil strain technical field, including heating module, vacuum dehydration module, regeneration module, purification filtration module and main control module, wherein: the heating module heats the oil liquid and controls the heating temperature; the vacuum dehydration module dehydrates and degasses the oil liquid by utilizing a vacuum environment; the regeneration module adsorbs organic pigments in the oil liquid and deacidifies and decolours the oil liquid; the purifying and filtering module is used for removing impurities and filtering the oil liquid; the main control module comprises an oil pump and a control module, the control module controls the oil pump to be started, the oil pump provides oil pumping power for oil transportation, and the control module controls other modules in the system. The functions of dehydration, degassing, impurity removal, regeneration, oil supplementation, hot oil circulation and the like are realized through modular design, automation is realized depending on a main control module, the automation degree is high, and the automatic oil replenishing machine can be unattended, is convenient and simple to operate and saves labor force.
Description
Technical Field
The application relates to the technical field of transformer oil filtering, in particular to an oil filtering system and method based on a transformer on-load switch.
Background
The on-load voltage regulation mode is generally adopted for transformers of 35kV and above, the transformers are arranged in an on-load voltage regulation switch oil chamber, transformer oil plays roles of insulation, arc extinction and cooling in the on-load switch, the gears of the transformers are required to be adjusted frequently in an on-load mode due to the change of system voltage in the running state of the existing transformers, the on-load switch oil quality variation can be caused by long time and multiple adjustment times, and harmful components such as carbonization, impurities, acetylene, hydrogen, methane and the like are generated; and the transformer oil runs for a long time, and the pressure resistance is unqualified due to acidic substances generated by excessive moisture, increased impurities and aging in the oil.
The conventional online oil filtering device has small volume, can only treat impurities with larger volume, and has no obvious filtering effect on moisture and tiny impurities; the conventional vacuum oil filter has large volume and weight of more than 200kg, can be transported to the site only by loading and unloading by a crane, has good treatment on moisture and gas, but has no obvious filtering effect on impurities and acidic substances in oil; the oil pump, though small and lightweight, cannot handle oil on site. In the work of changing oil of the on-load switch of the daily transformer, oil in the oil chamber is pumped out, new oil is added, because the oil conservator, the oil discharge pipe, the oil injection pipe and the oil chamber are not thoroughly cleaned, residual unqualified oil still exists inside the oil conservator, the oil product after the new oil and the old oil are mixed has a descending condition, and the problem of unqualified oil sample is caused after the new oil is frequently changed and the oil is operated for a period of time, so that the normal operation of the transformer is influenced.
Disclosure of Invention
In view of the problems that the online oil filtering device in the prior art has incomplete filtering effect on oil impurities, remains unqualified oil still exists inside the online oil filtering device, the oil product after new oil and old oil are mixed has a descending condition, and the normal operation of a transformer is affected due to the unqualified oil sample after the new oil is frequently replaced and the oil product is operated for a period of time, the invention provides the following contents:
the utility model provides an oil strain system based on transformer on-load switch, includes heating module, vacuum dehydration module, regeneration module, purification filtration module and main control module, wherein:
the heating module heats the oil liquid and controls the heating temperature;
the vacuum dehydration module dehydrates and degasses the oil liquid by utilizing a vacuum environment;
the regeneration module adsorbs organic pigments in the oil liquid and deacidifies and decolours the oil liquid;
the purifying and filtering module is used for removing impurities and filtering the oil liquid;
the main control module comprises an oil pump and a control module, the control module controls the oil pump to be started, the oil pump provides oil pumping power for oil transportation, and the control module controls other modules in the system.
Further, the vacuum dehydration module comprises a vacuum pump, a vacuum separator, a liquid level controller, a liquid level electromagnetic valve, a foam sensor and an air permeation electromagnetic valve, wherein:
the vacuum pump is used for vacuumizing the vacuum separator, and oil enters the vacuum separator through the liquid level electromagnetic valve;
the liquid level controller controls the liquid level electromagnetic valve to stop oil feeding;
the vacuum separator carries out vacuum analysis on the oil liquid to realize dehydration and degassing, and the dehydrated and degassed oil liquid enters the oil pump;
the foam sensor detects the foam content in the separator, and if the foam content is detected to be too high, the foam sensor is opened to defoam.
Furthermore, the regeneration module comprises a regeneration filter, wherein a composite regeneration adsorbent is assembled in the regeneration filter, and the composite regeneration adsorbent adsorbs organic pigments, carbon black, acidic materials and polar substances in oil.
Furthermore, the purification and filtration module comprises a secondary filter and a precision filter, and the oil liquid sequentially passes through the secondary filter and the precision filter to filter out solid particle impurities in the oil liquid.
The rain-proof cover is a tarpaulin type rain-proof cover and covers the modules.
Further, the main control module comprises a starting mode control unit, a starting unit, a stopping unit and an emergency stopping unit.
An oil filtering method based on a transformer on-load switch is applied to the oil filtering system based on the transformer on-load switch, and comprises the following specific steps:
respectively connecting the heating module, the vacuum dehydration module, the regeneration module and the purification and filtration module with the main control module;
electrifying to detect whether each module is successfully connected;
if the connection is successful, the main control module is powered on, and the corresponding module is controlled to be started on the main control module according to the requirement;
connecting the modules through oil outlet pipes;
starting on the main control module selectively, and entering an automatic mode;
oil liquid sequentially passes through a heating module, a vacuum dehydration module, a main control module and a purification and filtration module;
and pressing a stop button to finish oil filtering work, and stopping the system.
Further, the power-on detection of whether each module is successfully connected specifically includes the following steps:
checking a module connected with the main control module;
selecting a function switch of the connection module on the main control module;
and setting the function of the connection module and detecting whether the function is normal, wherein if the function is normal, the connection is successful.
The oil filtering system based on the transformer on-load switch is designed into a modular structure, so that the weight is light, and the transportation and the assembly can be easily completed; the modular structure design can be freely combined according to the actual working condition on site, so that the functions of dehydration, degassing, impurity removal, regeneration, oil supplementation, hot oil circulation and the like are realized, the functions of oil regeneration, purification, manual stepless flow regulation and the like are realized, the transformer oil can be supplemented, filtered and regenerated on site, and the oil quality is improved; the system relies on the main control module to realize automation, has high automation degree, can be unattended, is convenient and simple to operate, and saves labor force.
Drawings
Fig. 1 is a working principle block diagram of an oil filtering system based on a transformer on-load switch in the embodiment of the invention;
fig. 2 is a schematic diagram of the overall flow principle of an oil filtering system based on a transformer on-load switch in the embodiment of the invention.
Detailed Description
The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the embodiments of the disclosure. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
An oil filtering system based on a transformer on-load switch is shown in fig. 1 and comprises a heating module, a vacuum dehydration module, a regeneration module, a purification and filtration module and a main control module, wherein:
the heating module heats the oil liquid and controls the heating temperature;
the vacuum dehydration module dehydrates and degasses the oil liquid by utilizing a vacuum environment;
the regeneration module adsorbs organic pigments in the oil liquid and deacidifies and decolours the oil liquid;
the purifying and filtering module is used for removing impurities and filtering the oil liquid;
the main control module comprises an oil pump and a control module, the control module controls the oil pump to be started, the oil pump provides oil pumping power for oil transportation, and the control module controls other modules in the system.
As shown in fig. 2, the oil pump and the control module, namely the main control module adopts a vacuum special oil pump, so that secondary pollution of oil is prevented, and stable oil discharge can be ensured under high vacuum; and a frequency converter is arranged, the flow can be adjusted to be maximum, or the flow can be manually and infinitely adjusted within a certain range, and the device has the function of manually and infinitely adjusting the flow. The control and signal cables adopt aviation plug-in handle type structures, and meet the electrical performance requirements. The control system has the advantages of pressure overload protection, automatic dry burning prevention, automatic foam elimination and unique infrared liquid level automatic control device, automatically adjusts the balance of oil inlet and outlet, achieves man-machine separation, and enables the operation to be more convenient and reliable. The touch screen operation is realized through full-automatic intelligent control, so that operation monitoring personnel can know about the control system, and the running condition and the execution condition of each device of the equipment can be known and embodied in an animation mode by adopting flow animation control in system programming.
As shown in figure 2, the regeneration module adopts a tank type structure, an upper observation window and a lower observation window are designed on the outer tank, the color change of the regeneration purification material can be observed, the inner tank is detachable, more than 10kg of purification raw materials are filled in the inner tank, and the oil purification requirement of 170kg of barreled oil is met. The built-in adsorbent absorbs acidic substances, polar substances, carbon black and the like, so that the acid value of the oil can be reduced, the color of the oil can be improved, and the dielectric loss index can be reduced;
the filtering module is used for completely removing impurities in the oil by gradually encrypting the filter screen type filter element; the filter element adopts a high-precision composite fiber filter material, the gradually-dense filter layer can intercept irregular impurities of various forms, the filter module is a two-stage filter element, a two-stage filter and a fine filter, and the filter load is shared step by step, so that the service life of the filter element is prolonged, and the filter precision is ensured;
the power of the heating module is 12KW, the module is provided with a temperature detection sensor and a flow switch sensor, so that the over-temperature and dry burning are prevented, and the heating requirement is met;
further, in a preferred embodiment of the present application, as shown in fig. 2, the vacuum dehydration module comprises a vacuum pump, a vacuum separator, a liquid level controller, a liquid level solenoid valve, a foam sensor, and an air permeation solenoid valve, wherein:
the vacuum pump is used for vacuumizing the vacuum separator, and oil enters the vacuum separator through the liquid level electromagnetic valve;
the liquid level controller controls the liquid level electromagnetic valve to stop oil feeding;
the vacuum separator carries out vacuum analysis on the oil liquid to realize dehydration and degassing, and the dehydrated and degassed oil liquid enters the oil pump;
the foam sensor detects the foam content in the separator, and if the foam content is detected to be too high, the foam sensor is opened to defoam.
The vacuum dehydration module adopts a single-stage degassing tank to uniformly distribute the oil on the Raschig annular tower for degassing and dehydrating, thereby increasing the evaporation area and ensuring that the oil is filmed and has enough vaporization time. Install level sensor on the degasification jar, be equipped with about liquid level float switch, realize liquid level, foam automatic control, prevent that the oil level is too high, cross low and produce a large amount of foam condition oil spouts.
Further, in a preferred embodiment of the present application, the regeneration module includes a regeneration filter, and the regeneration filter is equipped with a composite regeneration adsorbent, and the composite regeneration adsorbent adsorbs organic pigments, carbon black, acidic materials and polar materials in the oil.
Further, in a preferred embodiment of the present application, the purification and filtration module includes a secondary filter and a precision filter, and the oil passes through the secondary filter and the precision filter in sequence to filter out solid particle impurities in the oil.
Further, in a preferred embodiment of this application, still include travelling car and rain-proof cover, through the travelling car with each module fast movement, accomplish the combination, rain-proof cover is the rain-proof cover of tarpaulin formula, covers on each module.
Each module is provided with a tarpaulin type rain cover with the specification of custom-made.
Each module is arranged on a movable trolley, the weight is controlled to be between 10 and 30kg, 1 person can carry on and off the train, and the modules can be quickly combined and used through a connecting module on site. According to different oil field indexes, the modules can be freely combined to realize various functions of oil supplement, moisture and impurity filtering, regeneration and the like.
Further, in a preferred embodiment of the present application, the main control module includes a start mode control unit, a start unit, a stop unit, and an emergency stop unit.
An oil filtering method based on a transformer on-load switch is applied to the oil filtering system based on the transformer on-load switch, and comprises the following specific steps:
step S1, connecting the heating module, the vacuum dehydration module, the regeneration module and the purification and filtration module with the main control module respectively;
in the embodiment of the application, the oil circuit adopts the steel wire transparent hose as the connecting piece and is provided with the special quick self-sealing joint, so that the reliable connection is ensured, and the air leakage and the oil leakage are avoided.
Step S2, electrifying to detect whether each module is successfully connected;
step S3, if the connection is successful, the main control module is powered on, and the corresponding module is controlled to start on the main control module according to the requirement;
step S4, connecting all the modules through oil outlet pipes;
s5, selecting starting on the main control module, and entering an automatic mode;
step S6, sequentially passing the oil through a heating module, a vacuum dehydration module, a main control module and a purification and filtration module;
and step S7, pressing a stop button to finish oil filtering work, and stopping the system.
Further, in a preferred embodiment of the present application, the step S2 of detecting whether the modules are successfully connected by powering on specifically includes the following steps:
step S210, checking a module connected with the main control module;
step S220, selecting a function switch of the connection module on the main control module;
step S230, setting the function of the connection module and detecting whether the function is normal, if so, indicating that the connection is successful.
The modular oil filtering system has a rated flow rate of 200-.
The transformer oil can be regenerated on site, and the water, gas and impurities in the oil and harmful components in oil such as acetylene, hydrogen, methane and the like can be quickly removed through different combinations, so that the performance of the oil is improved, the normal operation of equipment can be effectively ensured, and accidents are avoided.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and the like.
Claims (8)
1. The utility model provides an oil strain system based on transformer on-load switch which characterized in that, includes heating module, vacuum dehydration module, regeneration module, purification filtration module and main control module, wherein:
the heating module heats the oil liquid and controls the heating temperature;
the vacuum dehydration module dehydrates and degasses the oil liquid by utilizing a vacuum environment;
the regeneration module adsorbs organic pigments in the oil liquid and deacidifies and decolours the oil liquid;
the purifying and filtering module is used for removing impurities and filtering the oil liquid;
the main control module comprises an oil pump and a control module, the control module controls the oil pump to be started, the oil pump provides oil pumping power for oil transportation, and the control module controls other modules in the system.
2. The oil filtering system based on the transformer on-load switch of claim 1, wherein the vacuum dehydration module comprises a vacuum pump, a vacuum separator, a liquid level controller, a liquid level solenoid valve, a foam sensor and an air permeation solenoid valve, wherein:
the vacuum pump is used for vacuumizing the vacuum separator, and oil enters the vacuum separator through the liquid level electromagnetic valve;
the liquid level controller controls the liquid level electromagnetic valve to stop oil feeding;
the vacuum separator carries out vacuum analysis on the oil liquid to realize dehydration and degassing, and the dehydrated and degassed oil liquid enters the oil pump;
the foam sensor detects the foam content in the separator, and if the foam content is detected to be too high, the foam sensor is opened to defoam.
3. The oil filtering system based on the transformer on-load switch as claimed in claim 1, wherein the regeneration module comprises a regeneration filter, a composite regeneration adsorbent is assembled in the regeneration filter, and the composite regeneration adsorbent adsorbs organic pigments, carbon black, acidic materials and polar materials in oil.
4. The oil filtering system based on the on-load switch of the transformer as claimed in claim 1, wherein the purification and filtration module comprises a secondary filter and a precision filter, and the oil passes through the secondary filter and the precision filter in sequence to filter out solid particle impurities in the oil.
5. The oil filtering system based on the transformer on-load switch according to claim 1, further comprising a moving trolley and a rain cover, wherein the modules are rapidly moved and combined through the moving trolley, and the rain cover is a tarpaulin type rain cover and covers the modules.
6. The oil filtering system based on the transformer on-load switch of claim 1, wherein the main control module comprises a start mode control unit, a start unit, a stop unit and an emergency stop unit.
7. An oil filtering method based on a transformer on-load switch is applied to the oil filtering system based on the transformer on-load switch in any one of claims 1 to 6, and comprises the following specific steps:
respectively connecting the heating module, the vacuum dehydration module, the regeneration module and the purification and filtration module with the main control module;
electrifying to detect whether each module is successfully connected;
if the connection is successful, the main control module is powered on, and the corresponding module is controlled to be started on the main control module according to the requirement;
connecting the modules through oil outlet pipes;
starting on the main control module selectively, and entering an automatic mode;
oil liquid sequentially passes through a heating module, a vacuum dehydration module, a main control module and a purification and filtration module;
and pressing a stop button to finish oil filtering work, and stopping the system.
8. The oil filtering method based on the on-load switch of the transformer according to claim 7, wherein the step of detecting whether the modules are successfully connected by electrifying specifically comprises the following steps:
checking a module connected with the main control module;
selecting a function switch of the connection module on the main control module;
and setting the function of the connection module and detecting whether the function is normal, wherein if the function is normal, the connection is successful.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111286626.XA CN114188126A (en) | 2021-11-02 | 2021-11-02 | Oil filtering system and method based on transformer on-load switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111286626.XA CN114188126A (en) | 2021-11-02 | 2021-11-02 | Oil filtering system and method based on transformer on-load switch |
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| CN114188126A true CN114188126A (en) | 2022-03-15 |
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| CN202111286626.XA Pending CN114188126A (en) | 2021-11-02 | 2021-11-02 | Oil filtering system and method based on transformer on-load switch |
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| JP2004028246A (en) * | 2002-06-27 | 2004-01-29 | Toshiba Corp | Oil system equipment |
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| CN105754702A (en) * | 2016-02-16 | 2016-07-13 | 国网河南省电力公司电力科学研究院 | System and treatment method for recovering properties of waste transformer oil |
| CN113274803A (en) * | 2021-05-31 | 2021-08-20 | 广东电网有限责任公司 | Oil filtering system and method based on transformer on-load switch |
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2021
- 2021-11-02 CN CN202111286626.XA patent/CN114188126A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5942121A (en) * | 1995-06-07 | 1999-08-24 | Mikhailo Pantich | Method and apparatus for filtering, degassing, dehydrating and removing products of ageing in petroleum oils |
| CN2288763Y (en) * | 1996-04-09 | 1998-08-26 | 重庆渝州大学科技开发总公司 | Self-control self-check high efficiency vacuum oil filter |
| JP2004028246A (en) * | 2002-06-27 | 2004-01-29 | Toshiba Corp | Oil system equipment |
| CN102237177A (en) * | 2010-05-06 | 2011-11-09 | 北京市电力公司 | Device and method for filtering oil in electrified manner for on-load tap-changer of transformer |
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