CN206656859U - A kind of gas and oil separating plant for engine piston air loss experiment - Google Patents
A kind of gas and oil separating plant for engine piston air loss experiment Download PDFInfo
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- CN206656859U CN206656859U CN201720013587.9U CN201720013587U CN206656859U CN 206656859 U CN206656859 U CN 206656859U CN 201720013587 U CN201720013587 U CN 201720013587U CN 206656859 U CN206656859 U CN 206656859U
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Abstract
The utility model discloses a kind of gas and oil separating plant for engine piston air loss experiment, the problem of being intended to overcome current oil-gas separation efficiency low, complicated, versatility is not strong, gas and oil separating plant include gs-oil separator body, radiator and cooling water control system；Radiator is tilting in gs-oil separator body, the lower header of radiator stretches out from the arc-shaped through-hole on barrel on the right side of gs-oil separator body, the upper end of the flowing cavity of radiator is stretched out on the left of the top cover of gs-oil separator body, it is welded to connect between lower header and the right side barrel of gs-oil separator body, it is welded to connect between on the left of the top cover of flowing cavity upper end and gs-oil separator body, flowing cavity is in contact with gs-oil separator body internal surface and is partly welded to connect, electric two-way valve in cooling water control system is arranged on connection cooling tower and cooling water supply pipe, temperature sensor in cooling water control system is arranged on the pipeline being connected with the oil gas vent of gs-oil separator body.
Description
Technical field
A kind of experimental rig in engine development field is the utility model is related to, more precisely, the utility model is related to
A kind of gas and oil separating plant for engine piston air loss experiment
Background technology
1. engine is at work, due to gap between cylinder jacket and piston, piston ring be present, a part can be caused containing combustion
Oil, machine oil, the mixed gas of vapor and other steam enter crankcase.If piston, piston ring and cylinder Analysis of Nested Design or
Existing defects are processed, the gaseous mixture that will to leak into crankcase greatly increases, so as to cause engine power to decline, oil consumption
Increase, oil consumption increase.In order to avoid design defect occur in piston, piston ring and cylinder jacket, and then control and enter
The gaseous mixture of crankcase, engine on stream, will carry out the experiment of piston air leakage, for establishing test data
Storehouse, to evaluate piston, piston ring and the designing quality of cylinder jacket, reach the purpose of control piston air leakage.
2. large-duty engine air leakage under high rotating speed and high load capacity operating mode is larger, especially when piston, piston ring and vapour
When cylinder sleeve designs existing defects, air leakage is bigger.
3. gas and oil separating plant method traditional at present mainly has several：
1) inner division plate composition labyrinth, dividing plate is hit by air-flow and isolates larger machine oil oil droplet；
2) centrifugal separator of driving rotor is forced by external force；
3) oil gas is made to accelerate to separate by spiral-like side walls.Some low separation efficiencies of these devices, certain structures are multiple
Miscellaneous, versatility is not strong, is not suitable for researched and developed engine and uses.This is resulted in when piston air leakage is tested, in tester
Pipeline in, occur machine oil condensation block test pipeline even Contamination measurement sensor, so as to influence test efficiency and experiment essence
Degree.
The content of the invention
Technical problem to be solved in the utility model is to overcome that oil-gas separation efficiency existing for prior art is low, structure
Complicated, the problem of versatility is not strong, there is provided a kind of versatile, separative efficiency it is high be used for engine piston air loss experiment
Gas and oil separating plant.
In order to solve the above technical problems, the utility model adopts the following technical scheme that realization：Described one kind is used for
The gas and oil separating plant of engine piston air loss experiment includes gs-oil separator body, radiator and cooling water control system.
Described radiator is tilting in gs-oil separator body, and the lower header of radiator is from the right side of gs-oil separator body
Stretched out in arc-shaped through-hole on side tube-wall, the upper end of the flowing cavity of radiator is logical on the left of the top cover of gs-oil separator body
Stretched out in hole, welding manner is used between the arc-shaped through-hole on the lower header of radiator and the right side barrel of gs-oil separator body
Connection, flow and connected using welding manner between the through hole on the left of the upper end and gs-oil separator body top cover of cavity, flow cavity
The part that the front/rear end of body is in contact with gs-oil separator body barrel inner surface is connected using welding manner, cooling water control
Temperature sensor in system is arranged on the hydrocarbon test pipeline being connected with the oil gas vent of gs-oil separator body, and electronic two
Port valve is arranged on the cooling water supply pipe being connected with cooling water inlet.
Gs-oil separator body described in technical scheme is cylindrical shell class formation part, gs-oil separator body upper end
Left side barrel on be provided with penetrating the cylindrical oil and gas import being connected in cylinder, the right side barrel on oil and gas import opposite
Outside is provided with L-shaped installing plate, and the oil gas vent of cylinder, gs-oil separator are provided with the right side of gs-oil separator body top cover
It is provided with the left of the top cover of body in the installation radiator that front-back is arc surface, left and right face is plane and flows the logical of cavity
Hole, the physical dimension of through hole is equal with flowing the appearance and size of cavity in this place, and the cylinder bottom of gs-oil separator body is arranged to leak
Bucket shape cylinder bottom, and a cylindrical machine oil outlet, the right side cylinder of gs-oil separator body lower end are set at the center at cylinder bottom
The arc-shaped through-hole of one installation lower header of setting, the physical dimension of arc-shaped through-hole are equal with the appearance and size of lower header on wall.
Radiator described in technical scheme is the hollow plate structure part of " Z " font, radiator by upper tank, be provided with
The flowing cavity of flow of cooling water chamber forms with lower header；The cross section of upper tank and lower header is all the annular of the wall thickness such as rectangle
Hollow cross-section, the front and rear sides end face for flowing cavity are symmetroid；Upper tank, flowing cavity and lower header are linked to be successively
One, upper tank is parallel to each other with lower header, flows to tilt connection between cavity and upper tank and lower header, flowing cavity with
Angle is 95 degree~115 degree between upper tank and lower header, and the cooling water inlet of cylinder, lower header are provided with the top of upper tank
Right side bottom surface be provided with the coolant outlet of cylinder, the through hole of cylinder is provided with the front-rear center of lower header left end,
The through hole of cylinder does not connect with lower header.
10 to 15 rows and 5 to 10 are symmetrically each provided with the left and right cavity wall of flowing cavity described in technical scheme
Arrange and have the cylindrical boss of cavity, the external diameter of boss is 5mm~10mm, and the height of boss is 5mm~10mm, along flow cavity
The distance between body length direction adjacent rows boss is 15mm~30mm, along the adjacent two row boss of flowing cavity width it
Between distance be 15mm~25mm, the cavity of boss is connected with the flow of cooling water chamber of radiator.
Cooling liquid control system described in technical scheme also includes proportional integration temperature controller；Described TEMP
End chamber at the top of device draws two signal transmssion lines and the temperature signal transmission line interface on proportional integration temperature controller
Connect, the control signal output line interface on proportional integration temperature controller passes with the signal on the actuator of electric two-way valve valve top
Defeated line connection.
The beneficial effects of the utility model are compared with prior art：
A kind of 1. radiator of gas and oil separating plant for engine piston air loss experiment described in the utility model
Oil-gas separation chamber is divided into two cavitys, passes through the cylinder through hole UNICOM through radiator lower header so that into oil gas
Oil gas in separator has longer motion track, and oil-gas separation efficiency is improved from structure arrangement.
A kind of 2. radiator of gas and oil separating plant for engine piston air loss experiment described in the utility model
Pressure cools to oil gas, drips the machine oil rapid condensation in oil gas, improves oil-gas separation efficiency.
A kind of 3. radiator of gas and oil separating plant for engine piston air loss experiment described in the utility model
Flowing housing surface has the boss with inner chamber, can increase the surface area of oil gas shock, and and can increase oil gas flows with radiator
The contact area of housing surface, improve the heat-sinking capability of radiator.
A kind of 4. cooling water of gas and oil separating plant for engine piston air loss experiment described in the utility model
Control system can actively adjust the flow of cooling water as needed, so as to control the cooling capacity of radiator, meet that difference is started
The Oil-gas Separation demand of machine difference air leakage.
Brief description of the drawings
The utility model is further described below in conjunction with the accompanying drawings：
Fig. 1 is a kind of gas and oil separating plant body junction for engine piston air loss experiment described in the utility model
The axonometric projection view of structure composition；
Fig. 2 is a kind of gas and oil separating plant body junction for engine piston air loss experiment described in the utility model
Full sectional view on structure composition front view
Fig. 3 is radiated in a kind of gas and oil separating plant for engine piston air loss experiment described in the utility model
The axonometric projection view of device structure composition.
Fig. 4 is cooled down in a kind of gas and oil separating plant for engine piston air loss experiment described in the utility model
The schematic diagram of water control system structure composition.
In figure：1. cooling water inlet, 2. upper tanks, 3. flowing cavitys, 4. top covers, 5. oil gas vents, 6.L shape installing plates,
7. mounting hole, 8. gs-oil separator bodies, No. 9.1 disengagement chambers, 10, lower header, 11. coolant outlets, 12. through holes, 13. funnels
Shape bottom surface, 14, machine oil outlet, 15. flow of cooling water chambers, 16. boss, 17. cavitys, No. 18.2 disengagement chambers, 19. oil and gas imports,
20. cooling water supply pipe, 21. hydrocarbon test pipelines, 22. temperature sensors, 23. proportional integration temperature controllers, 24. electronic two
Port valve.
Embodiment
The utility model is explained in detail below in conjunction with the accompanying drawings：
Refering to Fig. 1 and Fig. 2, a kind of Oil-gas Separation dress for engine piston air loss experiment described in the utility model
Put including gs-oil separator body 8, radiator and cooling water control system.
Refering to Fig. 2 and Fig. 2, described gs-oil separator body 8 is cylindrical shell class formation part, gs-oil separator body
8 top cover 4 is circular flat board, and the right side of top cover 4 is provided with penetrates the cylindrical oil gas vent 5 being connected, top cover 4 with top cover 4
Left side be provided with the through hole that cavity 3 is flowed in installation radiator, the front-back of through hole is arc surface, left and right face is plane, is led to
Appearance and size of the physical dimension in hole with flowing cavity 3 in this place is equal, is set on the left side barrel of the upper end of gs-oil separator body 8
The cylindrical oil and gas import 19 being connected with barrel insertion is equipped with, is welded with the outside of the right side barrel on the opposite of oil and gas import 19
L-shaped installing plate 6, the mounting hole 7 for installing fixed gs-oil separator body 8, oil are provided with the vertical wall of L-shaped installing plate 6
The arc-shaped through-hole of one installation lower header 10, the dimensioning of arc-shaped through-hole are set on the right side barrel of the lower end of gas separating device body 8
It is very little equal with the appearance and size of lower header in radiator 10,8 bottoms of gs-oil separator body setting funneling cylinder bottom 13, and
One cylindrical machine oil outlet 14 after Oil-gas Separation is set at the center at cylinder bottom.
Refering to Fig. 2 and Fig. 3, described radiator is the hollow plate structure part of " Z " font, radiator by upper tank 2, set
The flowing cavity 3 and lower header 10 for being equipped with flow of cooling water chamber 15 form, and the cross section of upper tank 2 and lower header 10 is all rectangle
Deng the annular hollow cross-section of wall thickness, flowing cavity 3 front and rear sides end face is symmetroid, and upper tank 2, flowing cavity 3 are with
Hydroecium 10 is connected successively, and upper tank 2 is parallel to each other with lower header 10, flows between cavity 3 and upper tank 2 and lower header 10
Connected to tilt, it is 95 degree to 115 degree to flow angle between cavity 3 and upper tank 2 and lower header 10, and the top of upper tank 2 is set
There is the cooling water inlet 1 of cylinder, the right side bottom surface of lower header 10 is provided with the coolant outlet 11 of cylinder.
10 to 15 rows and 5 to 10 are symmetrically each provided with the left and right cavity wall of described flowing cavity 3 to arrange and have cavity
17 cylindrical boss 16, the external diameter of boss 16 is 5 to 10mm, and the height of boss 16 is 5 to 10mm, is grown along flowing cavity 3
It is 15 to 30mm to spend the distance between direction adjacent rows boss 16, along the adjacent two row boss 16 of the flowing width of cavity 3 it
Between distance be 15 to 25mm, the cavity 17 of boss 16 is connected with the flow of cooling water chamber 15 of radiator；The lower water of radiator
The through hole 12 of cylinder is provided with the front-rear center of the left end of room 10, top end face and bottom face at the cylindrical aperture of through hole 12
Coplanar with the top end face and bottom face of lower header 10, cylindrical through hole 12 does not connect with lower header 10.
Described radiator is tilting in gs-oil separator body 8, and the upper tank 2 of radiator is located at gs-oil separator body
8 top of top cover 4, the lower header 10 of radiator stretch out from the arc-shaped through-hole on the right side barrel of gs-oil separator body 8, radiated
Front-back of the upper end of the flowing cavity 3 of device from the left side of top cover 4 of gs-oil separator body 8 is arc surface, left and right face is plane
Through hole in stretch out, between the arc-shaped through-hole on lower header 10 and the right side barrel of gs-oil separator body 8 using welding manner connect
Connect, connected between the through hole in the upper end of flowing cavity 3 and the left side of top cover 4 of gs-oil separator body 8 using welding manner, flowing
The front/rear end of cavity 3 with the barrel inner surface of gs-oil separator body 8 is tangent contacts, flowing cavity 3 and gs-oil separator body 8
The part that barrel inner surface is in contact is connected using welding manner.
A kind of described gas and oil separating plant for engine piston air loss experiment is by radiator by gs-oil separator
The oil-gas separation chamber of body 8 is divided into No. 1 disengagement chamber 9 and No. 2 disengagement chambers 18.
Refering to Fig. 4, described cooling liquid control system includes temperature sensor 22, proportional integration temperature controller 23 and electricity
Dynamic two-port valve 24.
Described temperature sensor 22 is using model TSC-8212-103B34 wind pipe type temperature sensor, temperature biography
The measurement portion of sensor 22 is divided into cylinder rod member, and head comes with the nipple for installation, the top of temperature sensor 22
End chamber draws two signal transmssion lines, and temperature signal is transferred into proportional integration temperature controller 23；
The model TC-8312-11K of described proportional integration temperature controller 23, proportional integration temperature controller 23 are
Square packaging box, there is on box target temperature to set knob, temperature signal transmission line interface and control signal output line to connect
Mouthful；
The model 24VA-7010-8503 of described electric two-way valve 24, the valve body structure form of electric two-way valve is two
There is connection screw thread at port valve, the both ends of valve body, and valve top is provided with the actuator of control valve opening, two and ratio are drawn on actuator
The signal transmssion line of the control interface connection of integral temperature controller 23.
The oil gas that described temperature sensor 22 is installed between connection oil gas vent 5 and piston air leakage tester is surveyed
On test tube road 21, the end chamber at the top of temperature sensor 22 draws two signal transmssion lines and is connected to proportional integration temperature control
Temperature signal transmission line interface on device 23, the control signal output line interface and electronic two on proportional integration temperature controller 23
Signal transmssion line connection on the valve top actuator of port valve 24, electric two-way valve 24 are installed on connection cooling tower and cooling water inlet
Cooling water supply pipe 20 between 1.
A kind of described gas and oil separating plant for engine piston air loss experiment is by radiator by gs-oil separator
The oil-gas separation chamber of body 3 is divided into No. 1 disengagement chamber 5 and No. 2 disengagement chambers 10.
A kind of operation principle of gas and oil separating plant for engine piston air loss experiment：
The oil gas chamber of gs-oil separator body 8 is divided into No. 1 disengagement chamber 9 and No. 2 disengagement chambers 18 by described radiator, circle
Cylindricality through hole 12 connects No. 1 disengagement chamber 5 with No. 2 disengagement chambers 10 so that has into the oil gas in gas and oil separating plant longer
Motion track, oil gas separation is improved from structure arrangement.The oil gas entered from oil gas air inlet 19 enters No. 2 disengagement chambers
18, it is in contact with the surface of flowing cavity 3 of radiator, carries out heat exchange, the temperature of oil gas is lowered；Meanwhile oil gas and No. 2 points
Mutually hit from the surface of chamber 18 and flowing cavity 3 surface, aggravate the condensation of machine oil, make machine oil condensation aggregation, from gs-oil separator
The machine oil outlet 14 of the bottom of body 8 oozes, and returns in crankcase；The oil gas separated by No. 2 disengagement chambers 18, under radiator
Cylindrical through hole 12 on hydroecium 10 enters No. 1 disengagement chamber 9, further carried out with flowing cavity 3 surface heat exchange and with stream
The dynamic surface of cavity 3 is mutually hit with the surface of No. 1 disengagement chamber 9, and Oil-gas Separation, machine oil condensation are further carried out in No. 1 disengagement chamber 9
Gather and be dropped into No. 2 disengagement chambers 18 from the cylindrical through hole 12 on lower header 10 after collecting, finally from gas and oil separating plant bottom
Machine oil outlet 14 ooze, into crankcase, and the oil gas after separation is gone out from oil gas vent 5, into test pipeline.Cooling
Water enters upper tank 2 from external cooling water inlet pipe by cooling water inlet 1, and flow of cooling water chamber 15 is flowed into from upper tank 2, will
Flowing the temperature on the surface of cavity 3 reduces, and takes away the heat of oil gas in No. 2 disengagement chambers 18 and No. 1 disengagement chamber 9, finally enters lower water
Room 10 flows to external CWR from coolant outlet 11.
The boss 16 with cavity 17 that the surface of cavity 3 is set is flowed, adds the surface of flowing cavity 3 and hydrocarbons contact
Product, be advantageous to flow cavity 3 and oil gas progress heat exchange, cavity 17 and the UNICOM of flow of cooling water chamber 15 of boss 16 so that cold
But water can enter the cavity 17 of boss 16, take away the heat on the surface of boss 16, by forced heat radiation, reduce the temperature of oil gas, carry
High oil gas separation.
The oil gas temperature signal that temperature sensor 22 in cooling water control system will measure from hydrocarbon test pipeline 21
Proportional integration temperature controller 23 is transferred to by signal transmssion line, proportional integration temperature controller 23 surveys temperature sensor 22
Temperature value constantly compared with the temperature value set as needed in proportional integration temperature controller, according to comparative result,
Constantly actuator output control signal is given from control interface by the signal transmssion line of actuator on electric two-way valve 24, electronic two
Actuator in port valve 24 adjusts the aperture of valve in electric two-way valve 24 according to control signal, real so as to control cooling water flow
The regulation of existing radiator cooling capacity, meets the needs of different Different Work Condition of Engine piston air leakage experiments, by oil gas temperature
Control is within the temperature range of machine oil total condensation is made.
Claims (5)
1. a kind of gas and oil separating plant for engine piston air loss experiment, it is characterised in that described one kind is used to send out
The gas and oil separating plant of motivation piston air leakage experiment includes gs-oil separator body (8), radiator and cooling water control system；
Described radiator is tilting in the gs-oil separator body (8), and the lower header (10) of radiator is from gs-oil separator body
(8) stretched out in the arc-shaped through-hole on the barrel of right side, the upper end of the flowing cavity (3) of radiator is from gs-oil separator body (8)
Top cover (4) on the left of through hole in stretch out, on the lower header (10) of radiator and the right side barrel of gs-oil separator body (8)
Connected between arc-shaped through-hole using welding manner, upper end and gs-oil separator body (8) top cover (4) left side of flowing cavity (3)
Through hole between connected using welding manner, front/rear end and gs-oil separator body (8) barrel inner surface of flowing cavity (3)
The part being in contact is connected using welding manner, and the temperature sensor (22) in cooling water control system is arranged on and Oil-gas Separation
On the hydrocarbon test pipeline (21) of oil gas vent (5) connection of device body (8), electric two-way valve (24) is arranged on to enter with cooling water
On the cooling water supply pipe (20) of mouth (1) connection.
2. according to a kind of gas and oil separating plant for engine piston air loss experiment described in claim 1, its feature exists
In, described gs-oil separator body (8) be cylindrical shell class formation part, the left side cylinder of gs-oil separator body (8) upper end
It is provided with wall with penetrating the cylindrical oil and gas import (19) being connected in cylinder, the right side barrel on oil and gas import (19) opposite
Outside is provided with L-shaped installing plate (6), and the oil gas vent (5) of cylinder is provided with the right side of gs-oil separator body (8) top cover,
It is provided with the left of the top cover of gs-oil separator body (8) in the installation radiator that front-back is arc surface, left and right face is plane
The through hole of cavity (3) is flowed, the physical dimension of through hole is equal with flowing the appearance and size of cavity (3) in this place, gs-oil separator
The cylinder bottom of body (8) sets funneling cylinder bottom, and a cylindrical machine oil outlet (14), oil are set at the center at cylinder bottom
On the right side barrel of gas separating device body (8) lower end set one installation lower header (10) arc-shaped through-hole, arc-shaped through-hole it is several
What size is equal with the appearance and size of lower header (10).
3. according to a kind of gas and oil separating plant for engine piston air loss experiment described in claim 1, its feature exists
In, described radiator be the hollow plate structure part of " Z " font, radiator by upper tank (2), be provided with flow of cooling water chamber
(15) flowing cavity (3) forms with lower header (10)；The cross section of upper tank (2) and lower header (10) is all the wall thickness such as rectangle
Annular hollow cross-section, flowing cavity (3) front and rear sides end face be symmetroid；Upper tank (2), flowing cavity (3) with
Lower header (10) is connected successively, and upper tank (2) is parallel to each other with lower header (10), flowing cavity (3) and upper tank (2) and
To tilt connection between lower header (10), between flowing cavity (3) and upper tank (2) and lower header (10) angle be 95 degree~
115 degree, upper tank (2) top is provided with the cooling water inlet (1) of cylinder, and the right side bottom surface of lower header (10) is provided with cylinder
The coolant outlet (11) of shape, the through hole (12) of cylinder is provided with the front-rear center of lower header (10) left end, it is cylindrical
Through hole (12) does not connect with lower header (10).
4. according to a kind of gas and oil separating plant for engine piston air loss experiment described in claim 1 or 3, its feature
It is, 10 to 15 rows and 5 to 10 is symmetrically each provided with the left and right cavity wall of described flowing cavity and arranges and has cavity (17)
Cylindrical boss (16), the external diameter of boss (16) is 5mm~10mm, and the height of boss (16) is 5mm~10mm, along flowing
The distance between cavity (3) length direction adjacent rows boss (16) is 15mm~30mm, along flowing cavity (3) width phase
The distance between adjacent two row boss (16) are 15mm~25mm, the cavity (17) of boss (16) and the flow of cooling water chamber of radiator
(15) it is connected.
5. according to a kind of gas and oil separating plant for engine piston air loss experiment described in claim 1, its feature exists
In described cooling liquid control system also includes proportional integration temperature controller (23)；
End chamber at the top of described temperature sensor (22) draws two signal transmssion lines and proportional integration temperature controller
(23) the temperature signal transmission line interface connection on, control signal output line interface on proportional integration temperature controller (23) with
Signal transmssion line connection on the actuator of electric two-way valve (24) valve top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720013587.9U CN206656859U (en) | 2017-01-06 | 2017-01-06 | A kind of gas and oil separating plant for engine piston air loss experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720013587.9U CN206656859U (en) | 2017-01-06 | 2017-01-06 | A kind of gas and oil separating plant for engine piston air loss experiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206656859U true CN206656859U (en) | 2017-11-21 |
Family
ID=60313941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720013587.9U Withdrawn - After Issue CN206656859U (en) | 2017-01-06 | 2017-01-06 | A kind of gas and oil separating plant for engine piston air loss experiment |
Country Status (1)
| Country | Link |
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| CN (1) | CN206656859U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225775A (en) * | 2017-12-30 | 2018-06-29 | 江西腾勒动力有限公司 | A kind of test oil gas separating and measuring tooling |
-
2017
- 2017-01-06 CN CN201720013587.9U patent/CN206656859U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225775A (en) * | 2017-12-30 | 2018-06-29 | 江西腾勒动力有限公司 | A kind of test oil gas separating and measuring tooling |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171121 Effective date of abandoning: 20180102 |
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| AV01 | Patent right actively abandoned |