CN113289403A - Modularized transformer oil chromatogram degassing device - Google Patents
Modularized transformer oil chromatogram degassing device Download PDFInfo
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- CN113289403A CN113289403A CN202110542840.0A CN202110542840A CN113289403A CN 113289403 A CN113289403 A CN 113289403A CN 202110542840 A CN202110542840 A CN 202110542840A CN 113289403 A CN113289403 A CN 113289403A
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- 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
- B01D36/001—Filters in combination with devices for the removal of gas, air purge systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/0804—Cleaning containers having tubular shape, e.g. casks, barrels, drums
- B08B9/0808—Cleaning containers having tubular shape, e.g. casks, barrels, drums by methods involving the use of tools, e.g. by brushes, scrapers
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G31/00—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for
- C10G31/09—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for by filtration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
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- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Mechanical Engineering (AREA)
- Transformer Cooling (AREA)
Abstract
The invention discloses a modular transformer oil chromatogram degassing device, which comprises: the oil filter comprises a base, a controller, a storage mechanism, a top cover and an oil filter, wherein the controller, the storage mechanism and the oil filter are all arranged at the top end of the base, and the top cover is placed at the top end of the storage mechanism; the clamping mechanism can be assembled at the bottom end of the driving mechanism; the storage mechanism includes: the oil drum, install in the top of base, just the top cap is placed on the top of oil drum. This modularization transformer oil chromatogram degasser, in-service use, can practice thrift area when guaranteeing to save degasification time, can seal at any time simultaneously or open first through-hole, prevent the transformer oil backward flow of being siphoned away by the oil filter, or prevent that debris such as washing liquid from flowing into the oil filter, can also relax convenient inner wall to the oil drum clean.
Description
Technical Field
The invention relates to the technical field of transformer oil degassing equipment, in particular to a modular transformer oil chromatographic degassing device.
Background
The transformer oil is mineral oil obtained by distillation and refining of natural petroleum, a lubricating oil fraction in the petroleum is subjected to acid-base refining treatment to obtain a mixture of pure, stable, low-viscosity, good-insulativity and good-cooling liquid natural hydrocarbons, and when the transformer oil is subjected to chromatographic analysis, if the gas content of the transformer oil is not qualified, the gas in the oil needs to be removed to a qualified range, so that a transformer oil chromatographic degassing device is used;
at present, common degassing methods are a 'moving method' and a 'circulating method', although the time required for degassing is short, two oil drums need to be arranged, the 'circulating method' is just opposite to the 'moving method', the two methods are inconvenient, meanwhile, the oil drums of the existing equipment cannot seal a connecting port connected with a suction filter, if new oil is poured into the connecting pipe, the new oil can easily leak into the connecting pipe, in addition, after the existing equipment is used, oil stains can remain in the oil drums, and the cleaning is inconvenient.
Disclosure of Invention
The invention aims to provide a modular transformer oil chromatography degassing device, which at least solves the problems that the 'circulation method' in the prior art is too long in time consumption, the 'family moving method' occupies too large area, an oil pumping connector cannot be sealed, and an oil drum is inconvenient to clean.
In order to achieve the purpose, the invention provides the following technical scheme: a modular transformer oil chromatographic degasser comprising: base, controller, storage mechanism, top cap, oil filter, controller, storage mechanism and oil filter all install in the top of base, the top cap is placed on the top of storing the mechanism, still includes:
the clamping mechanism can be assembled at the bottom end of the driving mechanism, and the driving mechanism drives the clamping mechanism to rotate so as to clean the inner cavity of the storage mechanism;
the storage mechanism includes:
the oil drum is arranged at the top end of the base, and the top cover is placed at the top end of the oil drum;
the partition plate is slidably embedded in the inner cavity of the oil drum, the inner cavity of the oil drum is divided into two closed spaces by the partition plate, and the partition plate moves downwards when the content in the space at the bottom end of the partition plate is reduced;
the storage mechanism further comprises:
the oil outlet is arranged at the bottom end of the oil drum;
the first through hole is formed in the inner cavity of the oil outlet;
the limiting grooves are arranged on the inner wall of the first through hole;
the blind groove is formed in the inner cavity at the bottom end of the oil drum and communicated with the limiting groove on the right side;
the first motor is arranged at the bottom end of the oil drum, and the output end of the first motor extends into the inner cavity of the blind groove;
the first gear is locked at the output end of the first motor through a coupler;
the second gear is arranged at the bottom end of the inner cavity of the limiting groove on the right side through a bearing, one side of the second gear is embedded in the inner cavity of the limiting groove on the left side, and the other side of the second gear is meshed with the first gear;
the second through hole is formed in the outer wall of the limiting groove; and with the inner chamber intercommunication of first through-hole, first motor drive first gear is rotatory, and then drive second gear rotation, when the outer wall of second gear and the inner chamber laminating of first through-hole, can seal first through-hole.
The clamping mechanism comprises:
the connecting assembly can be assembled at the bottom end of the driving mechanism so as to connect the clamping mechanism with the driving mechanism;
spacing subassembly, the assembly is in coupling assembling's bottom, and then spacing coupling mechanism prevents that coupling assembling pine from taking off.
Preferably, the drive mechanism includes: the second motor is arranged in the middle of the top end of the top cover, and the output end of the second motor extends into the inner cavity of the oil drum; the fixed block is locked at the output end of the second motor through a coupler; the clamping blocks are a plurality of and are all installed at the bottom ends of the fixing blocks.
Preferably, the connection assembly includes: the connecting block can be assembled at the bottom end of the fixing block; the clamping grooves are arranged on the outer wall of the connecting block, and the clamping blocks can be inserted into the inner cavities of the clamping grooves; the connecting rod is fixedly arranged at the bottom end of the connecting block; the cleaning slurry is fixedly arranged at the bottom end of the connecting rod, the left side and the right side of the cleaning slurry are in contact with the inner wall of the oil drum, the clamping block is embedded in the inner cavity of the clamping groove, the clamping block is clamped with the connecting block, and the cleaning slurry is fixedly arranged at the bottom end of the driving mechanism.
Preferably, the limiting assembly comprises: the limiting block is sleeved on the outer wall of the connecting rod, and the top end of the outer wall is positioned on the inner sides of the clamping blocks; the spring is sleeved on the outer wall of the connecting rod, two ends of the spring are fixedly installed on the outer wall of the limiting block and the outer wall of the connecting rod respectively, and the limiting block is ensured to be inserted into the inner side of the clamping blocks through the elasticity of the spring to limit the clamping blocks.
Preferably, the oil inlet is assembled at the right side of the top end of the base, and the bottom end of the oil inlet extends into the inner cavity of the oil drum.
Preferably, the oil inlet and the first through hole are both in communication with the oil filter through a hose.
Preferably, the first motor, the second motor and the oil filter are all electrically connected with the controller.
The modular transformer oil chromatogram degassing device provided by the invention has the beneficial effects that:
1. the inner cavity of the oil drum is divided into an upper closed space and a lower closed space by the partition plate, the oil filter sucks out contents at the bottom end of the partition plate, so that the pressure intensity of the space at the bottom end of the partition plate is reduced, the partition plate moves downwards, meanwhile, the space at the top end of the partition plate is enlarged, the processed transformer oil flows into the space at the top end of the partition plate, in use, the size of the use space of each part of the inner cavity of the oil drum can be changed, only one oil drum can be used for quickly degassing by utilizing the principle of 'family moving method', meanwhile, the occupied area is saved, and the equipment cost is saved;
2. the first motor drives the first gear to rotate so as to drive the second gear to rotate reversely, and after the second gear rotates 180 degrees, the outer wall of the second gear corresponds to the inner cavity of the first through hole so as to seal the first through hole;
3. according to the cleaning device, the fixing block and the connecting block can be clamped and connected through the mutual matching of the clamping block and the clamping groove, the clamping block is limited through the matching of the limiting block and the connecting rod, so that the cleaning slurry is fixed with the fixing block, the cleaning slurry is driven to rotate through the second motor, and the inner wall of an oil drum can be easily and conveniently cleaned in use.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front sectional view of the storage mechanism of the present invention;
FIG. 3 is a top view of the first gear of the present invention;
FIG. 4 is an enlarged view of the invention at A;
FIG. 5 is a front view of the clamping mechanism of the present invention;
FIG. 6 is a front cross-sectional view of the clamping mechanism of the present invention.
In the figure: 1. the base, 2, the controller, 3, store the mechanism, 31, the oil drum, 32, the baffle, 33, airtight strip, 34, the oil-out, 35, first through-hole, 36, the spacing groove, 37, blind groove, 38, first motor, 39, first gear, 310, second gear, 311, the second through-hole, 4, the top cap, 5, actuating mechanism, 51, the second motor, 52, the fixed block, 53, the fixture block, 6, the oil inlet, 7, latch mechanism, 71, the connecting block, 72, the draw-in groove, 73, the connecting rod, 74, the stopper, 75, the spring, 76, clean thick liquid, 8, the oil filter.
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.
Referring to fig. 1-6, the present invention provides a technical solution: a modular transformer oil chromatogram degassing device comprises a base 1, a controller 2, a storage mechanism 3, a top cover 4 and an oil filter 8, wherein the controller 2, the storage mechanism 3 and the oil filter 8 are all installed at the top end of the base 1, the top cover 4 is placed at the top end of the storage mechanism 3, the modular transformer oil chromatogram degassing device also comprises a clamping mechanism 7, the clamping mechanism 7 can be assembled at the bottom end of a driving mechanism 5, the driving mechanism 5 drives the clamping mechanism 7 to rotate, and the inner cavity of the storage mechanism 3 can be cleaned;
the storage mechanism 3 comprises an oil drum 31, a partition plate 32 and an airtight strip 33, the oil drum 31 is installed at the top end of the base 1, the top cover 4 is placed at the top end of the oil drum 31, the partition plate 32 is slidably embedded in the inner cavity of the oil drum 31, the airtight strip 33 is installed on the circumference of the outer wall of the partition plate 32 and is attached to the outer wall of the oil drum 31, the partition plate 32 divides the inner cavity of the oil drum 31 into two closed spaces, and when the content in the bottom space of the partition plate 32 is reduced and the pressure is reduced, the partition plate 32 can synchronously move downwards;
the storage mechanism 3 further comprises an oil outlet 34, a first through hole 35, a limiting groove 36, two blind grooves 37, a first motor 38, a first gear 39, a second gear 310 and a second through hole 311, the oil outlet 34 is installed at the bottom end of the oil drum 31, the first through hole 35 is opened in the inner cavity of the oil outlet 34, the number of the limiting grooves 36 is two, the two limiting grooves are respectively opened at the left side and the right side of the inner wall of the first through hole 35, the blind grooves 37 are opened in the inner cavity of the bottom end of the oil drum 31 and are communicated with the limiting groove 36 at the right side, the first motor 38 is installed at the bottom end of the oil drum 31, the output end of the first motor 38 extends into the inner cavity of the blind groove 37, the first gear 39 is locked at the output end of the first motor 38 through a coupler, it is ensured that the first gear 39 can be driven to rotate by the first motor 38, the second gear 310 is installed at the bottom end of the inner cavity of the limiting groove 36 at the right side through a bearing, one side is embedded in the inner cavity of the limiting groove 36 at the left side, and the other side is engaged with the first gear 39, the first gear 39 is ensured to be capable of driving the second gear 310 to rotate reversely when rotating, and the second through hole 311 is formed in the outer wall of the limiting groove 36; and is communicated with the inner cavity of the first through hole 35, when the outer wall of the second gear 310 is attached to the inner cavity of the first through hole 35, the first through hole 35 can be closed.
The click mechanism 7 includes: the cleaning device comprises a connecting block 71, clamping grooves 72, connecting rods 73, limiting blocks 74, springs 75 and cleaning slurry 76, wherein the connecting block 71 can be assembled at the bottom end of a fixing block 52, the number of the clamping grooves 72 is four, the clamping grooves are arranged on the outer wall of the connecting block 71 at intervals of 90 degrees along the circumferential direction, the clamping blocks 53 can be inserted into the inner cavities of the clamping grooves 72, the connecting block 71 can be limited by the matching of the clamping blocks 53 and the clamping grooves 72, the connecting rods 73 are fixedly arranged at the bottom end of the connecting block 71, the limiting blocks 74 are sleeved on the outer wall of the connecting rods 73, the top ends of the outer wall are positioned on the inner sides of the clamping blocks 53, the springs 75 are sleeved on the outer wall of the connecting rods 73, two ends of the springs are respectively and fixedly arranged on the outer wall of the limiting blocks 74 and the outer wall of the connecting rods 73, the springs 75 are helical springs and are stretched or extruded to generate elastic deformation, the external force is removed to restore the initial state, the springs 75 are compressed when the limiting blocks 74 are stressed to move downwards, and are removed under the self elastic force of the springs 75, the limiting blocks 74 are ensured to be inserted into the inner sides of the four clamping blocks 53 to limit the clamping blocks 53, the cleaning slurry 76 is fixedly arranged at the bottom end of the connecting rod 73, the left side and the right side of the cleaning slurry are in contact with the inner wall of the oil drum 31, and the inner wall of the oil drum 31 can be cleaned by the cleaning slurry 76.
As a preferred scheme, furthermore, the driving mechanism 5 includes a second motor 51, a fixed block 52, and four fixture blocks 53, the second motor 51 is mounted in the middle of the top end of the top cover 4, and the output end of the second motor 51 extends into the inner cavity of the oil drum 31, the fixed block 52 is locked at the output end of the second motor 51 through a coupling, and the number of the fixture blocks 53 may be four, and the four fixture blocks are mounted at the bottom end of the fixed block 52 every 90 degrees along the circumferential direction, so as to ensure that the second motor 51 can drive the fixed block 52 and the fixture blocks 53 to rotate together.
Preferably, the oil inlet 6 is disposed at the right side of the top end of the base 1, and the bottom end of the oil inlet extends into the inner cavity of the oil drum 31, so as to ensure that the degassed transformer oil can flow into the inner cavity of the oil drum 31.
Preferably, the oil inlet and the first through hole are both in communication with the oil filter (8) through a hose, so that the oil filter (8) can deliver degassed transformer oil into the inner cavity of the oil drum (31), and the oil filter (8) can suck out undegassed transformer oil.
Preferably, the first motor 38, the second motor 51 and the oil filter 8 are electrically connected to the controller 2, so that the controller 2 can control the whole equipment.
The detailed connection means is a technique known in the art, and the following mainly describes the working principle and process, and the specific operation is as follows.
The method comprises the following steps: installing and fixing oil drum 31 filled with non-degassed transformer oil, connecting oil filter 8 with oil outlet 34 by using a hose, starting first motor 38 to rotate and driving first gear 39 to rotate under the control of controller 2, wherein second gear 310 rotates in the same direction when first gear 39 rotates due to the mutual engagement of second gear 310 and first gear 39, and the inner cavity of oil drum 31 is communicated with oil filter 8 when second through hole 311 is located opposite to first through hole 35;
step two: the oil filter 8 starts to work under the control of the controller 2, the transformer oil in the oil drum 31 below the partition plate 32 is sucked out by the oil filter 8 through the connection of the hose, air in the transformer oil is exhausted through the filtration of the oil filter 8, degassed transformer oil is input into a space above the partition plate 32 in the inner cavity of the oil drum 31 through the oil inlet 6, the partition plate 32 and the air sealing strip 33 can slowly move downwards due to the fact that the transformer oil below the partition plate 32 is reduced and the pressure is lowered, the space above the partition plate 32 is enlarged until all the undegassed transformer oil is sucked out, the partition plate 32 can be lowered to the bottom end of the inner cavity of the oil drum 31, and the transformer oil in the space above the partition plate 32 is degassed transformer oil at the moment;
step three: when the use is finished and the inner wall of the oil drum 31 needs to be cleaned, the partition plate 32 is lowered to the bottom end of the inner cavity of the oil drum 31, the second gear 310 is used for sealing the first through hole 35, the top cover 4 is opened, the limiting block 74 is pushed downwards and the spring 75 is compressed, meanwhile, the clamping mechanism 7 is pushed upwards to enable the clamping block 53 to be inserted into the inner cavity of the clamping groove 72, under the limiting action of the clamping groove 72, the clamping block 53 can deform inwards within the elastic range, when the bottom end of the clamping block 53 extends out of the bottom end of the connecting block 71, the bottom end of the clamping block 53 and the bottom end of the connecting block 71 are matched with each other to brake the connecting block 71, the external force applied to the limiting block 74 is removed, under the action of the self elastic force of the spring 75, the limiting block 74 is driven to move upwards to enable the top end to be embedded into the inner sides of the plurality of the clamping blocks 53, the clamping block 53 is limited, the bottom end of the clamping block 53 cannot move inwards, and the clamping mechanism 7 is fixed, the second motor 51 is started under the control of the controller 2 to drive the cleaning slurry 76 to rotate, so that the inner wall of the oil drum 31 can be cleaned;
in actual use, the degassing time can be saved, the occupied area can be saved, the first through hole 35 can be closed or opened at any time, the transformer oil sucked away by the oil filter 8 is prevented from flowing back, or sundries such as cleaning liquid are prevented from flowing into the oil filter 8, and the inner wall of the oil drum 31 can be cleaned easily and conveniently.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A modular transformer oil chromatographic degasser comprising: base (1), controller (2), storage mechanism (3), top cap (4), oil filter (8), controller (2), storage mechanism (3) and oil filter (8) all install in the top of base (1), top cap (4) are placed on the top of storing mechanism (3), its characterized in that still includes:
the clamping mechanism (7) can be assembled at the bottom end of the driving mechanism (5), the driving mechanism (5) drives the clamping mechanism (7) to rotate, and an inner cavity of the storage mechanism (3) can be cleaned;
the storage mechanism (3) comprises:
the oil drum (31) is installed at the top end of the base (1), and the top cover (4) is placed at the top end of the oil drum (31);
the partition plate (32) is slidably embedded in the inner cavity of the oil drum (31);
the air-tight strip (33) is arranged on the circumference of the outer wall of the partition plate (32) and is attached to the outer wall of the oil drum (31), the partition plate (32) divides the inner cavity of the oil drum (31) into two closed spaces, and when the content in the bottom space of the partition plate (32) is reduced, the partition plate (32) moves downwards;
the storage mechanism (3) further comprises:
an oil outlet (34) mounted at the bottom end of the oil drum (31);
the first through hole (35) is formed in an inner cavity of the oil outlet (34);
the limiting grooves (36) are provided with a plurality of limiting grooves and are formed in the inner wall of the first through hole (35);
the blind groove (37) is formed in the inner cavity at the bottom end of the oil drum (31) and communicated with the limiting groove (36) on the right side;
the first motor (38) is installed at the bottom end of the oil drum (31), and the output end of the first motor extends into the inner cavity of the blind groove (37);
the first gear (39) is locked at the output end of the first motor (38) through a coupler;
the second gear (310) is mounted at the bottom end of the inner cavity of the limiting groove (36) on the right side through a bearing, one side of the second gear is embedded in the inner cavity of the limiting groove (36) on the left side, and the other side of the second gear is meshed with the first gear (39);
the second through hole (311) is formed in the outer wall of the limiting groove (36); the first motor (38) drives the first gear (39) to rotate and further drives the second gear (310) to rotate, and when the outer wall of the second gear (310) is attached to the inner cavity of the first through hole (35), the first through hole (35) can be closed;
the clamping mechanism (7) comprises:
the connecting assembly can be assembled at the bottom end of the driving mechanism (5) so as to connect the clamping mechanism (7) with the driving mechanism (5);
spacing subassembly, the assembly is in coupling assembling's bottom, and then spacing coupling mechanism prevents that coupling assembling pine from taking off.
2. The modular transformer oil chromatographic degassing device according to claim 1, wherein: the drive mechanism (5) comprises:
the second motor (51) is arranged in the middle of the top end of the top cover (4), and the output end of the second motor extends into the inner cavity of the oil drum (31);
the fixed block (52) is locked at the output end of the second motor (51) through a coupler;
the number of the clamping blocks (53) is a plurality, and the clamping blocks are all arranged at the bottom end of the fixing block (52).
3. The modular transformer oil chromatographic degassing device according to claim 1, wherein: the connecting assembly includes:
the connecting block (71) can be assembled at the bottom end of the fixing block (52);
the clamping grooves (72) are arranged on the outer wall of the connecting block (71), and the clamping blocks (53) can be inserted into the inner cavities of the clamping grooves (72);
the connecting rod (73) is fixedly arranged at the bottom end of the connecting block (71);
clean thick liquid (76), fixed mounting in the bottom of connecting rod (73), and the left and right sides with the inner wall of oil drum (31) contacts, fixture block (53) are embedded in the inner chamber of draw-in groove (72), make fixture block (53) with connecting block (71) looks joint, make clean thick liquid (76) fixed mounting in the bottom of actuating mechanism (5).
4. The modular transformer oil chromatographic degassing device according to claim 1, wherein: the spacing subassembly includes:
the limiting block (74) is sleeved on the outer wall of the connecting rod (73), and the top end of the outer wall is positioned on the inner sides of the clamping blocks (53);
and the spring (75) is sleeved on the outer wall of the connecting rod (73), two ends of the spring are fixedly installed on the outer wall of the limiting block (74) and the outer wall of the connecting rod (73) respectively, and the limiting block (74) can be inserted into the inner sides of the clamping blocks (53) through the elasticity of the spring (75) to limit the clamping blocks (53).
5. The modular transformer oil chromatographic degassing device according to claim 1, wherein: the oil inlet (6) is assembled at the right side of the top end of the base (1), and the bottom end of the oil inlet extends into the inner cavity of the oil drum (31).
6. The modular transformer oil chromatographic degassing device according to claim 1, wherein: the oil inlet (6) and the first through hole (35) are communicated with the oil filter (8) through a hose.
7. The modular transformer oil chromatographic degassing device according to claim 1, wherein: the first motor (38), the second motor (51) and the oil filter (8) are all electrically connected with the controller (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110542840.0A CN113289403A (en) | 2021-05-18 | 2021-05-18 | Modularized transformer oil chromatogram degassing device |
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| CN202110542840.0A CN113289403A (en) | 2021-05-18 | 2021-05-18 | Modularized transformer oil chromatogram degassing device |
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| CN210705440U (en) * | 2019-10-15 | 2020-06-09 | 南昌一通智能卡开发有限公司 | Plastic mixer of high-efficient packing |
| CN211337236U (en) * | 2019-12-29 | 2020-08-25 | 江苏圣泰防腐设备有限公司 | Full-plastic horizontal storage tank |
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Application publication date: 20210824 |