CN206271510U - Superelevation transformer oil two-stage vacuum oil oil filter - Google Patents
Superelevation transformer oil two-stage vacuum oil oil filter Download PDFInfo
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- CN206271510U CN206271510U CN201621380360.XU CN201621380360U CN206271510U CN 206271510 U CN206271510 U CN 206271510U CN 201621380360 U CN201621380360 U CN 201621380360U CN 206271510 U CN206271510 U CN 206271510U
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Abstract
Superelevation transformer oil two-stage vacuum oil oil filter, including sending oil system, high-efficiency multi-stage to be evaporated in vacuo separation chamber, vacuum system and filtration system, it is described send oil system include preliminary filter, oil-feed pump and heater, vacuum system includes the first condenser, two grades of Roots blower pumps, the second condenser and vavuum pumps, and filtration system includes the first fine filter, the second fine filter and bridge-type valve group；The import connection oil supply pipe of preliminary filter, outlet connects heater by oil-feed pump, and the oil-out connection high-efficiency multi-stage of heater is evaporated in vacuo the distributor in separation chamber；Superelevation transformer oil two-stage vacuum oil oil filter effectively removes moisture, gas, impurity in insulating oil, moreover it is possible to quickly vacuumize to external world, so as to reach the real effect purified to insulating oil；The quality of oil product is improve, power equipment can be effectively ensured normally be run, it is to avoid accident occurs, and with wide market prospects, is worth promoting.
Description
Technical field
The utility model is related to power supply facilities field, especially a kind of superelevation transformer oil two-stage vacuum oil oil filter.
Background technology
The major function of electrical apparatus insulation oil is to cool down and insulate, also with the work of the electric arc produced when eliminating circuitry cuts
With.
Transformer oil in heat, in the presence of electric field, oil contact with oxygen gradually it is oxidized generate various oxides and alcohol,
Aldehyde, acid etc., eventually form insoluble colloid, greasy filth Precipitation.The insulating properties of these acidic materials reduction transformer, therefore
Transformer oil must filtration treatment.
Water, gas are in two kinds of forms in fluid --- and there is most of what oil in dissolving water, gas (below saturation point)
In system and oil-using units, and during free water, gas (more than saturation point) have a many fluid of what.
Due to system leakage, poorly sealed, fluid be chronically at the reason moisture in air such as thermic load, open oil storage,
Gas settling causes Water in oil, gas in oil.
Untreated transformer oil moisture content：50~60ppm, air content：10%~20%, in order to allow oil to reach finger
Mark, it is necessary to processed with a temperature of in specified vacuum, except water degasification, removes mechanical admixture.
The dielectric properties of oil are heavily dependent on the aqueous of oil, air content, well cuts and dustiness.Or even fresh oil
In storage and transportation also can inspiration gas and moisture, therefore, oil is using preceding needing filtration treatment.And oil is using process
In also want regular degasification because the dielectric properties of oil are under different temperature conditions, can be influenceed by gas and moisture.
Utility model content
The utility model aims to provide a kind of effective moisture, gas, superelevation transformer of impurity removed in insulating oil
Oily two-stage vacuum oil oil filter.
To achieve the above object, the utility model provides following technical scheme：Superelevation transformer oil two-stage vacuum oil oil strain
Machine, including send oil system, high-efficiency multi-stage to be evaporated in vacuo separation chamber, vacuum system and filtration system, it is described to send oil system including just
Filter, oil-feed pump and heater, vacuum system include the first condenser, two grades of Roots blower pumps, the second condenser and vavuum pumps,
Filtration system includes the first fine filter, the second fine filter and bridge-type valve group；The import connection oil supply pipe of preliminary filter, outlet passes through
Oil-feed pump connects heater, and the oil-out connection high-efficiency multi-stage of heater is evaporated in vacuo the distributor in separation chamber, high-efficiency multi-stage
It is evaporated in vacuo inside separation chamber and is from top to bottom sequentially provided with distributor and three evaporation elements；High-efficiency multi-stage is evaporated in vacuo separation chamber
Top the first condenser is connected by pipeline, the first condenser connects the second condensers by by two grades of Roots blower pumps,
Second condenser connects vavuum pump by FlexbleJoint；The bottom that high-efficiency multi-stage is evaporated in vacuo separation chamber is connected by oil drain pump
First fine filter, the first fine filter connects the second fine filter, and the second fine filter connects preliminary filter by bridge-type valve group.
As further scheme of the present utility model：The bottom that the high-efficiency multi-stage is evaporated in vacuo separation chamber is provided with band lamp sight
Examine window and infrared ray tank gage.
As further scheme of the present utility model：The high-efficiency multi-stage is evaporated in vacuo between separation chamber and the first condenser
Demister is provided with, external pump-line is connected with the pipeline between demister and the first condenser, set on external pump-line
It is a pipeline that interface is vacuumized with transformer to have the external external pump-lines of extraction valve.
As further scheme of the present utility model：The outlet of the preliminary filter connects the second essence by first circulation pipeline
Filter, the outlet of heater connects the first fine filter by second circulation pipeline, first circulation pipeline and second circulation pipeline it
Between by thermal oil circulation pipeline connect, first circulation pipeline also by the 3rd circulating line connect heater import；First follows
Circulating valve is equipped with endless tube road, second circulation pipeline, the 3rd circulating line and thermal oil circulation pipeline.
As further scheme of the present utility model：The bridge-type valve group includes first choice valve, the second selector valve, the 3rd
Selector valve and the 4th selector valve, first choice valve are connected with the second selector valve, and the 3rd selector valve is connected with the 4th selector valve, and first
Selector valve, the second selector valve are in parallel with the 3rd selector valve, the 4th selector valve, the pipeline between first choice valve and the second selector valve
Connection first import and export pipeline, the pipeline connection second import and export pipeline between the 3rd selector valve and the 4th selector valve, first enters
Outlet conduit and second import and export pipeline are connected respectively to first import and export and second import and export.
As further scheme of the present utility model：U-shaped fin heats pipe is provided with the heater.
Compared with prior art, the beneficial effects of the utility model are：Superelevation transformer oil two-stage vacuum oil oil filter
Effective moisture, gas, the impurity removed in insulating oil, moreover it is possible to quickly vacuumize to external world, it is real to insulating so as to reach
The effect that oil is purified.The quality of oil product is improve, power equipment can be effectively ensured normally be run, it is to avoid accident occurs, tool
There are wide market prospects, be worth promoting.
Brief description of the drawings
Fig. 1 is schematic flow sheet of the present utility model；
Fig. 2 is the structural representation of bridge-type valve group of the present utility model.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of the utility model protection.
Fig. 1-2 is referred to, in the utility model embodiment, superelevation transformer oil two-stage vacuum oil oil filter, including send oil
System, high-efficiency multi-stage be evaporated in vacuo separation chamber 13, vacuum system and filtration system, it is described send oil system include preliminary filter 1, oil-feed
Pump 2 and heater 3, vacuum system include 5, two grades of Roots blower pumps 6 of the first condenser, the second condenser 7 and vavuum pump 8, mistake
Filter system includes the first fine filter 10, the second fine filter 11 and bridge-type valve group 12；The import connection oil supply pipe of preliminary filter 1, goes out
Mouth connects heater 3 by oil-feed pump 2, and the oil-out connection high-efficiency multi-stage of heater 3 is evaporated in vacuo the distribution in separation chamber 13
Device 14, high-efficiency multi-stage is evaporated in vacuo inside separation chamber 13 and is from top to bottom sequentially provided with distributor 14 and three evaporation elements；Efficiently
The top of multi-stage vacuum evaporation separation chamber 13 connects the first condenser 5 by pipeline, and the first condenser 5 is by by two grades of Roots
Booster pump 6 connects the second condenser 7, and the second condenser 7 connects vavuum pump 8 by FlexbleJoint；High-efficiency multi-stage is evaporated in vacuo
The bottom of separation chamber 13 connects the first fine filter 10 by oil drain pump, and the first fine filter 10 connects the second fine filter 11, the second essence
Filter 11 connects preliminary filter 1 by bridge-type valve group 12.
Above-mentioned, the bottom that high-efficiency multi-stage is evaporated in vacuo separation chamber 13 is provided with band lamp observation window and infrared ray tank gage.
Above-mentioned, high-efficiency multi-stage is provided with demister 4 between being evaporated in vacuo the condenser 5 of separation chamber 13 and first, demister 4 and the
It is connected with external pump-line 9 on pipeline between one condenser 5, external pump-line 9 is provided with that external extraction valve is external to be taken out
Feed channel 9 is a pipeline that interface is vacuumized with transformer.Transformer vacuum oil function is capable of achieving, i.e., transformer is carried out
Vacuumize while carrying out oily filtration treatment.
Above-mentioned, the outlet of preliminary filter 1 connects the second fine filter 11 by first circulation pipeline, and the outlet of heater 3 passes through
Second circulation pipeline connects the first fine filter 10, is connected by thermal oil circulation pipeline between first circulation pipeline and second circulation pipeline
Connect, first circulation pipeline also connects the import of heater 3 by the 3rd circulating line；First circulation pipeline, second circulation pipeline,
Circulating valve is equipped with 3rd circulating line and thermal oil circulation pipeline.
Above-mentioned, bridge-type valve group 12 includes first choice valve 21, the second selector valve 22, the 3rd selector valve 23 and the 4th selector valve
24, first choice valve 21 is connected with the second selector valve 22, and the 3rd selector valve 23 is connected with the 4th selector valve 24, first choice valve
21st, the second selector valve 22 is in parallel with the 3rd selector valve 23, the 4th selector valve 24, between the selector valve 22 of first choice valve 21 and second
Pipeline connection first import and export pipeline, between the 3rd selector valve 23 and the 4th selector valve 24 pipeline connection second import and export pipe
Road, first import and export pipeline and second import and export pipeline are connected respectively to first import and export 25 and second import and export 26.To becoming
Depressor need to only switch respective valves and can just change oil inlet and oil-out direction when carrying out vacuum oil and Circulation and Hot Oil Spray；It is not required to
Exchange oil pipe, it is to avoid oil leak, the oily phenomenon of race.
It is above-mentioned, U-shaped fin heats pipe is provided with heater 3, homogeneous heating prevents the hot-spot that region of bypassed oil causes.
Design feature of the present utility model and its advantage：The machine sets the two-stage vacuum of the big speed of exhaust, disclosure satisfy that peace
Dress or Overhaul site are vacuumized to transformer body, and complete the degassing dewater treatment to transformer oil simultaneously, shorten oily place
The science and engineering phase.And fluid is dehydrated using physical means, is deaerated, removal of impurities is processed, and the component and usability of fluid are not influenceed
Energy.It integrates secondary filter, high-efficiency dehydration, degassing, vacuum stereo evaporation technique and the automated control technology of fluid, behaviour
Make simple, operation safe and reliable.Power equipment can be effectively ensured normally to run, it is to avoid accident occurs.
First, the machine is designed specifically designed for superelevation transformer oil, is particularly suited for the transformer of the large-scale power transmission and transformation of more than 750KV
Oil processing.
2nd, using peculiar dehydration degassing structure, quickly can effectively deviate from the moisture and gas in insulating oil, improve insulating oil
Resistance to be pressed onto more than 75KV.Moisture is less than below 2PPM.
3rd, using forking branch node technology, the moisture evaporation in fluid is quickly made.Insulating oil is abundant within the system
Film is distributed and atomizing spray (increasing insulating oil atomisation area in a vacuum), and increased oil to the utmost in the system
In " path " so that moisture in oil and gas obtain enough vaporization times and reach optimal dehydration degasifying effect.
Using patent full scan infrared ray liquid level and foam control system, it is to avoid any mechanical action, the reliability of equipment is improve,
The system is freedom from repairs system.There is the evaporation list matched with model in vacuum separator (high-efficiency multi-stage is evaporated in vacuo separation chamber 13)
Unit, so that geometry level improves disengagement area and ensures that fluid has abundant evaporating surface, while taking into full account that gas flowing is special during design
Property is conducive to gas quickly to be extracted out by vacuum source；The pumping speed ability of vavuum pump 8 be evaporate water vapour, separate out gas flow twice with
On so as to ensure that fluid is not secondary polluted, while ensure system be in an extremely low atmospheric pressure state under work.
4th, patent filtration system, using " gradually close " type filter core of special ABB MICAFIL composite high-molecular filter materials, filtering
Rate improve 100 times, the particle effectively gone in oil removing, at the same the life-span of filter core also greatly improve.With progressive encryption, ratio is shared respectively
The removal of impurities load of level filter core, and ensure the realization of cleannes using rational fluid design, it is profound filter in oil it is thin
Microparticle.Electrostatic Absorption is also used, the negative charge carrier not being readily removable is allowed, makes to be adsorbed with positive charge, reach charge balance, from
And more thoroughly impurity is removed, the requirement of fluid high target is effectively ensured.Filtering accuracy reaches 0.5 μm of particle.In order to allow oil
The final particle precision of liquid reaches 1 μ, and (filtering accuracy matches 10 μ：1μ：0.5 μ) scientific matching.Gradually close filtering step by step.Multistage filtering
The fine grained impurity in fluid can be removed.Due to using 10 μ：1μ：The scientific matching of 0.5 μ, makes some irregular particles
(pin, linear) it is secondary through filtration core when effectively filtered out.In addition using the deep layer filter material filter core of import absolute precision, the filter core is
Water conservancy diversion filters irregular particle (pin, linear) impurity again by close property structure.The sealing of filter core is sealed with buckle and replaces tradition
End face seal, it is ensured that fluid do not formed bypass and influence precision.
5th, the equipment single treatment dielectric strength is less than 4ppm up to more than 75KV, moisture.
6th, the equipment be provided with on-line temperature monitoring instrument, online pressure sensing instruments, online vacuum detecting instrument,
Line Level meter, online flow detector, can in real time understand the working condition of oil strain oil product situation and equipment.
7th, the function efficiently removes moisture in transformer oil, gas and impurity, improves the compressive resistance and oil product of oil
Quality.It is primarily adapted for use in the treatment of fresh oil, imported oil and ultrahigh voltage transformer oil.
8th, it is particularly suitable for live live line work, and power equipment tide vapour can be dried, moreover it is possible to easily power equipment is entered
Row vacuum oil.
9th, dehydration, deaeration capacity pole Strong.Equipment is vacuumized using the vavuum pump 8 of huge discharge to system, it is ensured that energy
The vapor evaporated in fluid and other gases are quickly discharged；
Tenth, equipment compact efficient, conveniently moving, full-closed structure, is particularly suitable for scene and field work.
11, equipment is provided with perfect protection device.By each executive component to the temperature of equipment, pressure, vacuum, stop
Electricity, superpressure, under-voltage etc. implement protection comprehensively, and the equipment that can be effectively ensured normally is run, and prevents accident from occurring.
12, high degree of automation.Using advanced thermostatically-controlled equipment and oil level control device to the oil temperature of equipment and
Oil level forms control, oil temperature is realized range restraint with oil level, fully achieves unmanned.
13, at the high temperature evaporated in vacuum separator hot water steaming high and other gases being carried out condensation water removal, are dried
Reason, strengthens the effective output of equipment, greatly prolongs the service life of vavuum pump 8.
Manufacture craft：
Fluid production gas, particularly manual metal-arc welding, electrode coating and weldering are also resulted in the making of system and manufacture craft
The oxide for connecing can be catalyzed the production of fluid acetylene and gas.Therefore, we are welded using gas shield welding, the welding procedure is one side
Weldering double-faced forming, molten bath welding, does not have a large amount of oxides of traditional electrode coating and welding.The pond mouthful melting welding of rule allows weld seam
Pore-free such as is mingled with the phenomenon, it is therefore prevented that pipe-line system weld seam gas enclosure permeation and oxide cause the feelings for having warm fluid acetylene production
Condition.
Fuel transfer system：If oil pump selection is improper in the conveying of fluid, such as gear pump, vane pump can be because gear engagements
Be rotated at a high speed with blade makes fluid chain rupture (carbon connects C-C) and cracking produce acetylene in mechanical engagement shearing force and high temperature pocketed oil area
And gas.For this, we guide conveying using the special screw pump of insulating oil using spiral, prevent to produce second in the case of conveying
Alkynes and gas.
In the sealing of system, we are as sealing gasket and most using the fluosilicic oil resistant rubber of special good stability
Amount prevents the aging cracking release acetylene pollution fluid of encapsulant using small with fluid contact surface that O-ring is sealed.
In systems, we are specially provided with condenser, can quickly the vapor of cooling vacuum extract system and reduce institute
The temperature of pumping, plays to vacuum system and protects special well very well.Strengthen the service life of vacuum system, reduce vacuum system
System is changed oil cost.
Heating system is safe and reliable, is provided with safety guard, sets up superhigh temperature protection system, so as to enter to heating system
Duplicate protection is gone.When oil inlet quantity is very few or temperature reaches set point, heater is automatically stopped work and avoids causing because of dry combustion method
The damage of heater and generation fluid Pintsch process.
Heater uses Electric heating, configures safe pressure valve and temperature controller, realizes overvoltage release, lower temperature (oil
Temperature) electrical heating automatically opens up heating, higher to be automatically switched off (temperature controller sets at high and low 2 points at 20 DEG C~80 DEG C).Must take
Effective protection measure, to prevent the phenomenons such as pipe-line system hot-spot from occurring.Heater is divided to manually and automatically two kinds of control.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, can in other specific forms realize that this practicality is new
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as limitation
Involved claim.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each implementation method is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Specification an as entirety, the technical scheme in each embodiment can also be formed into those skilled in the art through appropriately combined
May be appreciated other embodiment.
Claims (6)
1. superelevation transformer oil two-stage vacuum oil oil filter, including send oil system, high-efficiency multi-stage be evaporated in vacuo separation chamber, vacuum system
System and filtration system, it is characterised in that described to send the oil system to include preliminary filter, oil-feed pump and heater, vacuum system includes the
One condenser, two grades of Roots blower pumps, the second condenser and vavuum pumps, filtration system include the first fine filter, the second fine filter
With bridge-type valve group；The import connection oil supply pipe of preliminary filter, outlet connects heater by oil-feed pump, and the oil-out of heater connects
The distributor that high-efficiency multi-stage is evaporated in vacuo in separation chamber is connect, high-efficiency multi-stage is evaporated in vacuo inside separation chamber and is from top to bottom sequentially provided with
Distributor and three evaporation elements；The top that high-efficiency multi-stage is evaporated in vacuo separation chamber connects the first condenser, first by pipeline
Condenser connects the second condenser by by two grades of Roots blower pumps, and the second condenser connects vacuum by FlexbleJoint
Pump；The bottom that high-efficiency multi-stage is evaporated in vacuo separation chamber connects the first fine filter, the essence of the first fine filter connection second by oil drain pump
Filter, the second fine filter connects preliminary filter by bridge-type valve group.
2. superelevation transformer oil two-stage vacuum according to claim 1 oil oil filter, it is characterised in that the high-efficiency multi-stage
The bottom for being evaporated in vacuo separation chamber is provided with band lamp observation window and infrared ray tank gage.
3. superelevation transformer oil two-stage vacuum according to claim 1 oil oil filter, it is characterised in that the high-efficiency multi-stage
It is evaporated in vacuo between separation chamber and the first condenser and is provided with demister, is connected with the pipeline between demister and the first condenser
External pump-line, external pump-line is provided with the external external pump-lines of extraction valve and is one and vacuumized with transformer and connect
The pipeline of mouth.
4. superelevation transformer oil two-stage vacuum according to claim 1 oil oil filter, it is characterised in that the preliminary filter
Outlet connects the second fine filter by first circulation pipeline, and the outlet of heater connects the first refined filtration by second circulation pipeline
Device, is connected between first circulation pipeline and second circulation pipeline by thermal oil circulation pipeline, and first circulation pipeline also passes through the 3rd
Circulating line connects the import of heater；First circulation pipeline, second circulation pipeline, the 3rd circulating line and thermal oil circulation pipeline
On be equipped with circulating valve.
5. superelevation transformer oil two-stage vacuum according to claim 1 oil oil filter, it is characterised in that the bridge-type valve group
Including first choice valve, the second selector valve, the 3rd selector valve and the 4th selector valve, first choice valve is connected with the second selector valve,
3rd selector valve is connected with the 4th selector valve, and first choice valve, the second selector valve are in parallel with the 3rd selector valve, the 4th selector valve,
Pipeline connection first import and export pipeline between first choice valve and the second selector valve, between the 3rd selector valve and the 4th selector valve
Pipeline connection second import and export pipeline, first import and export pipeline and second import and export pipeline be connected respectively to first import and export and
Second import and export.
6. superelevation transformer oil two-stage vacuum according to claim 1 oil oil filter, it is characterised in that in the heater
It is provided with U-shaped fin heats pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621380360.XU CN206271510U (en) | 2016-12-15 | 2016-12-15 | Superelevation transformer oil two-stage vacuum oil oil filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621380360.XU CN206271510U (en) | 2016-12-15 | 2016-12-15 | Superelevation transformer oil two-stage vacuum oil oil filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206271510U true CN206271510U (en) | 2017-06-20 |
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ID=59046726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621380360.XU Expired - Fee Related CN206271510U (en) | 2016-12-15 | 2016-12-15 | Superelevation transformer oil two-stage vacuum oil oil filter |
Country Status (1)
| Country | Link |
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| CN (1) | CN206271510U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108053978A (en) * | 2017-12-20 | 2018-05-18 | 江山市技装自动化科技有限公司 | The on-line automatic dehydration degasser of one vegetable oil power transformer |
| CN108079655A (en) * | 2018-01-31 | 2018-05-29 | 珠海经济特区恒迪科技有限公司 | Transformer insulation oil cycles micro- water treatment system online |
| CN109078442A (en) * | 2018-09-18 | 2018-12-25 | 湖北和远气体股份有限公司 | A kind of crystal pulling furnace richness argon tail gas oil removing system |
| CN114198357A (en) * | 2021-12-10 | 2022-03-18 | 湖北超星液压自动化有限公司 | Bridge type manual hydraulic pump, hydraulic system and control method |
| US11387031B2 (en) | 2017-09-27 | 2022-07-12 | C. C. Jensen A/S | Vacuum filtration system |
| CN117964203A (en) * | 2024-02-04 | 2024-05-03 | 可迪尔空气技术（北京）有限公司 | Treatment method of oily sludge |
-
2016
- 2016-12-15 CN CN201621380360.XU patent/CN206271510U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11387031B2 (en) | 2017-09-27 | 2022-07-12 | C. C. Jensen A/S | Vacuum filtration system |
| CN108053978A (en) * | 2017-12-20 | 2018-05-18 | 江山市技装自动化科技有限公司 | The on-line automatic dehydration degasser of one vegetable oil power transformer |
| CN108079655A (en) * | 2018-01-31 | 2018-05-29 | 珠海经济特区恒迪科技有限公司 | Transformer insulation oil cycles micro- water treatment system online |
| CN109078442A (en) * | 2018-09-18 | 2018-12-25 | 湖北和远气体股份有限公司 | A kind of crystal pulling furnace richness argon tail gas oil removing system |
| CN114198357A (en) * | 2021-12-10 | 2022-03-18 | 湖北超星液压自动化有限公司 | Bridge type manual hydraulic pump, hydraulic system and control method |
| CN117964203A (en) * | 2024-02-04 | 2024-05-03 | 可迪尔空气技术（北京）有限公司 | Treatment method of oily sludge |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170620 Termination date: 20171215 |
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| CF01 | Termination of patent right due to non-payment of annual fee |