CN110065920A - A kind of big oil filling riser locking type sealing device - Google Patents
A kind of big oil filling riser locking type sealing device Download PDFInfo
- Publication number
- CN110065920A CN110065920A CN201910347122.0A CN201910347122A CN110065920A CN 110065920 A CN110065920 A CN 110065920A CN 201910347122 A CN201910347122 A CN 201910347122A CN 110065920 A CN110065920 A CN 110065920A
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- China
- Prior art keywords
- oil filling
- filling riser
- gas phase
- locking
- cylinder
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/42—Filling nozzles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
A kind of big oil filling riser locking type sealing device, the device includes upper retaining mechanism, lower retaining mechanism and the sealing cap assemblies for sealing tank car wagon spout, sealing cap assemblies includes large cover, the aperture with the cooperation of the lifting pipe of oil filling riser is provided in the middle part of large cover, tapping is equipped with gas phase cylinder, the other end of gas phase cylinder is equipped with seal assembly on gas phase mouth, and the side of gas phase cylinder is provided with the interface for cooperating with external petroleum vapor recovery pipeline；It is also equipped with compression power mechanism on the gas phase cylinder, output end and the lower retaining mechanism for compressing power mechanism are hinged；The upper retaining mechanism locks the lifting pipe of oil filling riser and oil filling riser for being fixedly installed on oil filling riser.The device is cooperated by upper retaining mechanism and lower retaining mechanism, locking and closed to the progress of tank car mouth using large cover, can generate biggish sealing coupling mechanism force, elastic sealing gasket and tank car mouth is made to be in good sealing state, guarantee that oil gas cannot leak from tank car mouth.
Description
Technical field
The present invention relates to oil product or chemicals handling art, especially a kind of big oil filling riser locking type sealing device.
Background technique
Big oil filling riser is the equipment that oil article vehicle speed is fast, high-efficient, and primary structure principle is that horizontally movable walking is small
Vehicle and bracket are installed on steel structure truss, trolley can only horizontal movement, vertical direction places restrictions on dynamic movement, and lifting pipe passes through chain
It is flexibly connected with the lifting cylinder on bracket, lifting pipe passes through three-way component, can slide up and down on three-way component, three-way component
It is connect with liquid pipe by telescopic sleeve or Universal rotary pivoted arm, and horizontal movement, the setting of lifting pipe upper end is drawn using oil cylinder
Opening, sealing cover are sleeved on lifting pipe；When not entrucking lifting pipe to rise with sealing cover and reach train limit for height with 5.5 meters with
On, it is convenient for train tank car safety, lifting pipe drops in tank car when entrucking, oil inlet and horizontal extension above lifting pipe
Pipe docking, sealing device drop on tank car mouth by self weight, and there are many specifications and models, the tank car mouths of different model tank car for train tank car
Height to rail is different, and sealing device will adapt to different height tank car seal request, and sealing device is vertical on lifting pipe
Direction any position will reliably lock, and lifting pipe and bracket are flexibly connected using chain, and rigidity is insufficient, and sealing device compresses trough
Lifting pipe cannot be risen by pushing when vehicle mouth, and there are deviations for train tank car mouth and big oil filling riser center, and part tank car mouth has inclination
Uneven phenomenon.
In the prior art, big oil filling riser is mainly used for light-end products or chemicals such as gasoline, boat coal, benzene class train tank car dress
Vehicle, because of these medium high volatilities, big crane tube load speed is fast, and when entrucking generates a large amount of oil gas, and big oil filling riser is closed at present
The sealing cover that entrucking uses substantially has plate seal lid, flat plate folding formula sealing cover, relies primarily on the weight compression rubber of sealing cover
Rubber mat, but this sealing cover is light-weight, and cannot generate enough pressing forces makes rubber pad deformable seal tank mouth, and oil and gas leakage is tight
Weight, is not achieved " oil storage village, often used in village names atmosphere pollutants emission standards ".
Summary of the invention
The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide one kind to use big oil filling riser
Tank car mouth is effectively sealed during entrucking, the big oil filling riser locking type sealing device for avoiding oil gas from leaking from tank car mouth.
The technical problem to be solved by the present invention is to what is realized by technical solution below.The present invention is a kind of big crane
Pipe locking type sealing device, the device include upper retaining mechanism, lower retaining mechanism and the sealing cover for sealing tank car wagon spout
Component, sealing cap assemblies include large cover, and the aperture with the cooperation of the lifting pipe of oil filling riser, tapping peace are provided in the middle part of large cover
Equipped with gas phase cylinder, the other end of gas phase cylinder is equipped with seal assembly on gas phase mouth, and the side of gas phase cylinder, which is provided with, to be used for
With the interface of external petroleum vapor recovery pipeline cooperation；It is also equipped with compression power mechanism on the gas phase cylinder, compresses power mechanism
Output end and lower retaining mechanism it is hinged；The upper retaining mechanism is for being fixedly installed to the lifting pipe of oil filling riser and crane on oil filling riser
Pipe locking.
The technical problems to be solved by the invention can also be further realized by technical solution below, for the above
Big oil filling riser locking type sealing device, the upper retaining mechanism and lower retaining mechanism include the hinged primary lock panel in one end and pair
Latch, primary lock panel and secondary latch offer locking hole, and locking pull rod is plugged on locking hole, is installed on primary lock panel
There is locking power mechanism, the one end for locking pull rod is fixedly connected with the output end of locking power mechanism.
The technical problems to be solved by the invention can also be further realized by technical solution below, for above
The big oil filling riser locking type sealing device is equipped on the primary lock panel and serves as a contrast with the primary lock of the lifting pipe of oil filling riser cooperation
It covers, the secondary Locking bushing with the cooperation of the lifting pipe of oil filling riser is installed on secondary latch.
The technical problems to be solved by the invention can also be further realized by technical solution below, for above
The big oil filling riser locking type sealing device is also connected with multiple between the primary lock panel of locking hole side and secondary latch
Position spring.
The technical problems to be solved by the invention can also be further realized by technical solution below, for above
The big oil filling riser locking type sealing device, the locking power mechanism include locking cylinder, and locking cylinder is connected by oil cylinder
Plate is mounted on primary lock panel.
The technical problems to be solved by the invention can also be further realized by technical solution below, for above
The big oil filling riser locking type sealing device, the compression power mechanism includes compressed oil cylinder, and compressed oil cylinder is fixedly mounted on gas
On phase cylinder.
The technical problems to be solved by the invention can also be further realized by technical solution below, for above
The big oil filling riser locking type sealing device is provided with the sealing of long round shape on the large cover, be set on sealing with
The elastic sealing gasket of tank car wagon spout cooperation, aperture are arranged on sealing.
The technical problems to be solved by the invention can also be further realized by technical solution below, for above
Two contraposition sides of the big oil filling riser locking type sealing device, the large cover are additionally provided with anticollision plate, and anticollision plate uses
Explosion-proof lamp is made.
The technical problems to be solved by the invention can also be further realized by technical solution below, for above
The big oil filling riser locking type sealing device, the gas phase cylinder are mounted on the tapping of large cover, ball by ball bearing assembly
The inner ring flange of bearing assembly is fixedly connected with gas phase cylinder, and the outer ring flange of ball bearing assembly is fixedly connected with large cover.
The technical problems to be solved by the invention can also be further realized by technical solution below, for above
The big oil filling riser locking type sealing device, seal assembly includes the carbon being mounted at gas phase cylinder upper port on the gas phase mouth
Fiber packing and polyurethane sealing ring.
Compared with prior art, the present invention is fixedly mounted on big oil filling riser three-way component using upper retaining mechanism, by big crane
The lifting pipe of pipe and three-way component lock, and avoid the lifting pipe of big oil filling riser fixed in vertical direction, then by large cover with
The fitting of tank car mouth, locked using the lifting pipe of lower retaining mechanism and big oil filling riser it is securely non-slip, thus to compression power mechanism into
Row is fixed, finally, compressing large cover by compressing power mechanism, so that elastic sealing gasket is close to tank car mouth, and generate bullet appropriate
Property deformation and reach good sealing effect, effectively avoid oil and gas leakage.The device passes through upper retaining mechanism and lower retaining mechanism
Cooperation, it is locking and closed to the progress of tank car mouth using large cover, biggish sealing coupling mechanism force can be generated, elastic sealing gasket and tank car are made
Mouth is in good sealing state, guarantees that oil gas cannot leak from tank car mouth, and external oil gas can only be entered from gas phase cylinder and is returned
Closed tube line line, finally by realizing qualified discharge after the device for recovering oil and gas processing of external petroleum vapor recovery pipeline line end.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of retaining mechanism of the present invention；
Fig. 3 is the structural schematic diagram of present invention sealing cap assemblies；
Fig. 4 is the top view of present invention sealing cap assemblies.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, right below in conjunction with attached drawing of the present invention
Technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is a part of the invention
Embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making wound
Every other embodiment obtained under the premise of the property made labour, shall fall within the protection scope of the present invention.
Referring to Fig.1-4, a kind of big oil filling riser locking type sealing device, the device include upper retaining mechanism 2, lower retaining mechanism 4
With the sealing cap assemblies 8 for sealing tank car wagon spout, sealing cap assemblies 8 includes large cover 22, and the middle part of large cover 22 is arranged
There is the aperture with the cooperation of the lifting pipe 3 of oil filling riser 1, tapping is equipped with gas phase cylinder 9, and the other end of gas phase cylinder 9 is equipped with gas
Seal assembly 5 on phase mouth, the side of gas phase cylinder 9 are provided with the interface for cooperating with external petroleum vapor recovery pipeline；The gas
It is also equipped on phase cylinder 9 and compresses power mechanism 6, output end and the lower retaining mechanism 4 for compressing power mechanism 6 are hinged；On described
Retaining mechanism 2 locks the lifting pipe 3 of oil filling riser 1 with oil filling riser 1 for being fixedly installed on oil filling riser 1.In use, first by upper locking machine
Structure 2, lower retaining mechanism 4 are sleeved on the lifting pipe 3 of big oil filling riser 1, and the lower nozzle of lifting pipe 3 sequentially passes through gas phase cylinder 9, aperture
Tank car wagon spout is protruded into, upper retaining mechanism 2 is fixed with the three-way component lower end of big oil filling riser 1 or the other positions of big oil filling riser 1
It installs, retaining mechanism 2 and three-way component are fixed in vertical direction in guarantee, are locked on lifting pipe 3 in upper retaining mechanism 2
When, guarantee that lifting pipe 3 and three-way component are fixed；The upper port of gas phase cylinder 9 is provided with the gas phase with the cooperation of big oil filling riser 1
Seal assembly 5 on mouth guarantee leakproofness；After installing, successively upper retaining mechanism 2, lower retaining mechanism 4 and lifting pipe 3 are locked,
At this point, upper retaining mechanism 2 is locked on lifting pipe 3, so that lifting pipe 3 and three-way component lock, cannot move up and down；Under
Retaining mechanism 4 and lifting pipe 3 lock, so that lower retaining mechanism 4 will not carry out relative displacement with lifting pipe 3, are then turned on compression
Power mechanism 6 pushes large cover 22 to hold out against at tank car wagon spout, is sealed to tank car wagon spout, the size of aperture is greater than
It between lifting pipe 3, is passed in gas phase cylinder 9 convenient for oil gas from tapping, then is passed to external petroleum vapor recovery from interface
Pipeline most discharges after the processing of external device for recovering oil and gas afterwards.
The upper retaining mechanism 2 and lower retaining mechanism 4 are same retaining mechanism, include the hinged primary lock in one end
Plate 11 and secondary latch 13, primary lock panel 11 and secondary latch 13 offer locking hole, and locking pull rod is plugged on locking hole
17, locking power mechanism is installed, the output end of one end and locking power mechanism for locking pull rod 17 is fixed on primary lock panel 11
Connection；The locking power mechanism includes locking cylinder 19, and locking cylinder 19 is mounted on primary lock panel by oil cylinder connecting plate 18
On 11.The driving method of locking power mechanism uses hydraulic-driven, but not limited to this driving method, in the prior art other move
Power drive can be realized the requirement of the application, can be with；It is equipped on the primary lock panel 11 and cooperates with the lifting pipe 3 of oil filling riser 1
Primary lock bushing 15, the secondary Locking bushing 14 with the cooperation of the lifting pipe 3 of oil filling riser 1 is installed on secondary latch 13.Primary lock lining
Screw connection, primary lock panel 11 and secondary lock are all made of between set 15 and primary lock panel 11, secondary Locking bushing 14 and secondary latch 13
The material of tight plate 13 is high strength alloy steel, and primary lock bushing 15 and secondary Locking bushing 14 are using soft, explosion-proof, coefficient of friction is high
Material, such as rubber.
One end of locking pull rod 17 is provided with latch segment, and latch segment is greater than the size of locking hole, locks the another of pull rod 17
The locking hole that end sequentially passes through on primary lock panel 11 and secondary latch 13 is fixedly connected with the output end of locking power mechanism, is convenient for
Locking power mechanism pulls locking pull rod 17, and primary lock panel 11 and secondary latch 13 are locked to together；Primary lock panel 11, secondary lock
One end of tight plate 13 is hinged by connection pin shaft 12, to utilize thick stick using primary lock panel 11, secondary latch 13 as two levers
The coupling mechanism force that rod principle, that is, locking cylinder 19 generates is driving with the product for connecting pin shaft 12 to distance at oil cylinder locking pull rod 17
Torque, the active force that the length of connecting rod, oil cylinder cylinder diameter generate is adjustable, driving moment with connect pin shaft 12 into lifting pipe 3
The locking torque balance that the heart generates, locking torque can produce retaining mechanism to 3 normal pressure of lifting pipe, according to Locking bushing and rise
Drop 3 coefficient of friction of pipe and normal pressure can produce retaining mechanism and lifting pipe 3 locks frictional force, when frictional force is greater than sealing device pressure
When what locking oil cylinder generated is greater than the pressing force that sealing needs, it is ensured that retaining mechanism is reliably locked non-slip.
It is also connected with reset spring 16 between the primary lock panel 11 of the locking hole side and secondary latch 13, when realizing release
Primary lock panel 11 is rapidly separated with secondary latch 13 with lifting pipe 3.
The compression power mechanism 6 includes compressed oil cylinder, and compressed oil cylinder is fixedly mounted on gas phase cylinder 9.Compressed oil cylinder
2 are provided with, the two sides of gas phase cylinder 9 are symmetrically mounted on, the output end of 2 compressed oil cylinders is connect with lower retaining mechanism 4 using ball
Head assembly 10 is hinged, eliminate it is asynchronous when two cylinder ejectors caused by lateral force.Spherojoint component 10 includes ball stud and bulb
Seat, ball stud is mounted on the output end of compressed oil cylinder, and ball cup is fixedly mounted on lower retaining mechanism 4, convenient for compression cylinder with
Lower retaining mechanism 4 can be relatively rotated, be deviated.
It is provided with the sealing of long round shape on the large cover 22, the bullet with the cooperation of tank car wagon spout is set on sealing
Property gasket 20, aperture be arranged on sealing；Two contraposition sides of the large cover 22 are additionally provided with anticollision plate 21, anticollision
Plate 21 is made of explosion-proof lamp.Large cover 22 is in the form of annular discs, and sealing is in oval column, since train tank car is perpendicular to iron
There is a deviation in rail direction, and big 1 walking dolly of oil filling riser passes through oblong seal cover board component and mends immovable perpendicular to rail direction
The tank car mouth offset perpendicular to rail direction is repaid, can guarantee and cover tank car mouth completely；Elastic sealing gasket 20 is sealing rubber pad
Component, seal rubber pad assembly include rubber bodies, metal reinforcement skeleton, and bolt or bolt hole is arranged on skeleton, is convenient for and covers greatly
The installation of plate 22 is fixed, and rubber bodies select the rubber of different formulations according to entrucking medium, and add conducting electrostatic materials.
The side collision that direction is aligned to reduce rubber bodies and tank car mouth in oil filling riser 1 aligns side in rubber bodies two and is arranged
Anticollision plate 21, anticollision plate 21 and large cover 22 are fixed, are made of explosion-proof lamp.
The gas phase cylinder 9 is mounted on the tapping of large cover 22, the inner ring of ball bearing assembly 7 by ball bearing assembly 7
Flange is fixedly connected with gas phase cylinder 9, and the outer ring flange of ball bearing assembly 7 is fixedly connected with large cover 22.Ball bearing assembly 7 wraps
Include totally enclosed type bearing, have sealing cover and sealing ring, specifically include inner ring flange, outer ring flange and be mounted on inner ring flange with
Needle roller between the flange of outer ring convenient for that can be relatively rotated between gas phase cylinder 9 and large cover 22, and avoids oil gas from letting out
Leakage.
Seal assembly 5 includes the carbon fiber packing and polyurethane being mounted at 9 upper port of gas phase cylinder on the gas phase mouth
Sealing ring.It is packing made of weaving after being pre-oxidized as acrylic fiber that carbon fiber packing, which is also known as oxidization fiber packing, and surface is using poly-
Tetrafluoroethene lotion and lubricated form；Carbon fiber packing and polyurethane sealing ring are mounted on gas cylinder up and down, are convenient for
It is sleeved on lifting pipe 3, keeps there is no gap between lifting pipe 3 and gas cylinder, avoid oil and gas leakage.
Claims (10)
1. a kind of big oil filling riser locking type sealing device, it is characterised in that: the device includes upper retaining mechanism, lower retaining mechanism and use
In the sealing cap assemblies of sealing tank car wagon spout, sealing cap assemblies include large cover, are provided in the middle part of large cover and oil filling riser
The aperture of lifting pipe cooperation, tapping are equipped with gas phase cylinder, and the other end of gas phase cylinder is equipped with seal assembly on gas phase mouth,
The side of gas phase cylinder is provided with the interface for cooperating with external petroleum vapor recovery pipeline；Pressure is also equipped on the gas phase cylinder
Tight power mechanism, output end and the lower retaining mechanism for compressing power mechanism are hinged；The upper retaining mechanism is for being fixedly installed to
The lifting pipe of oil filling riser and oil filling riser are locked on oil filling riser.
2. big oil filling riser locking type sealing device according to claim 1, it is characterised in that: the upper retaining mechanism and lower lock
Tight mechanism includes the hinged primary lock panel in one end and secondary latch, and primary lock panel and secondary latch offer locking hole, lock
It is plugged with locking pull rod on tieholen, locking power mechanism is installed on primary lock panel, locks one end and the locking power machine of pull rod
The output end of structure is fixedly connected.
3. big oil filling riser locking type sealing device according to claim 2, it is characterised in that: be equipped on the primary lock panel
The primary lock bushing cooperated with the lifting pipe of oil filling riser, the secondary locking being equipped with the cooperation of the lifting pipe of oil filling riser on secondary latch serve as a contrast
Set.
4. big oil filling riser locking type sealing device according to claim 2, it is characterised in that: the primary lock of the locking hole side
Reset spring is also connected between plate and secondary latch.
5. big oil filling riser locking type sealing device according to claim 1, it is characterised in that: the locking power mechanism includes
Locking cylinder, locking cylinder are mounted on primary lock panel by oil cylinder connecting plate.
6. big oil filling riser locking type sealing device according to claim 1, it is characterised in that: the compression power mechanism includes
Compressed oil cylinder, compressed oil cylinder are fixedly mounted on gas phase cylinder.
7. big oil filling riser locking type sealing device according to claim 1, it is characterised in that: be provided with length on the large cover
The sealing of round shape, the elastic sealing gasket with the cooperation of tank car wagon spout is set on sealing, and aperture is arranged on sealing.
8. big oil filling riser locking type sealing device according to claim 1, it is characterised in that: two contraposition sides of the large cover
It is additionally provided with anticollision plate, anticollision plate is made of explosion-proof lamp.
9. big oil filling riser locking type sealing device according to claim 1, it is characterised in that: the gas phase cylinder passes through ball axis
Bearing assembly is mounted on the tapping of large cover, and the inner ring flange of ball bearing assembly is fixedly connected with gas phase cylinder, ball bearing assembly
Outer ring flange be fixedly connected with large cover.
10. big oil filling riser locking type sealing device according to claim 1, it is characterised in that: sealing group on the gas phase mouth
Part includes the carbon fiber packing and polyurethane sealing ring being mounted at gas phase cylinder upper port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910347122.0A CN110065920B (en) | 2019-04-27 | 2019-04-27 | Big oil filling riser locking formula sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910347122.0A CN110065920B (en) | 2019-04-27 | 2019-04-27 | Big oil filling riser locking formula sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110065920A true CN110065920A (en) | 2019-07-30 |
| CN110065920B CN110065920B (en) | 2021-05-18 |
Family
ID=67369159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910347122.0A Active CN110065920B (en) | 2019-04-27 | 2019-04-27 | Big oil filling riser locking formula sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110065920B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111333016A (en) * | 2020-04-07 | 2020-06-26 | 内蒙古君正化工有限责任公司 | Dichloroethane closed loading method and system |
| CN115557459A (en) * | 2022-09-30 | 2023-01-03 | 连云港和昌机械有限公司 | Oil filling riser integrating automatic liquid receiving and oil gas collecting |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB184133A (en) * | 1921-08-12 | 1922-08-10 | S F Bowser & Company | Improvements in or relating to cranes for delivering liquid |
| CN203728566U (en) * | 2014-03-31 | 2014-07-23 | 信众 | Large loading arm sealing cover |
| CN204384861U (en) * | 2014-12-29 | 2015-06-10 | 信众 | A kind of large oil filling riser seal cover cap |
| CN208265771U (en) * | 2018-05-25 | 2018-12-21 | 连云港天邦科技开发有限公司 | A kind of truss multistage nanubrium formula sealing device |
-
2019
- 2019-04-27 CN CN201910347122.0A patent/CN110065920B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB184133A (en) * | 1921-08-12 | 1922-08-10 | S F Bowser & Company | Improvements in or relating to cranes for delivering liquid |
| CN203728566U (en) * | 2014-03-31 | 2014-07-23 | 信众 | Large loading arm sealing cover |
| CN204384861U (en) * | 2014-12-29 | 2015-06-10 | 信众 | A kind of large oil filling riser seal cover cap |
| CN208265771U (en) * | 2018-05-25 | 2018-12-21 | 连云港天邦科技开发有限公司 | A kind of truss multistage nanubrium formula sealing device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111333016A (en) * | 2020-04-07 | 2020-06-26 | 内蒙古君正化工有限责任公司 | Dichloroethane closed loading method and system |
| CN115557459A (en) * | 2022-09-30 | 2023-01-03 | 连云港和昌机械有限公司 | Oil filling riser integrating automatic liquid receiving and oil gas collecting |
| CN115557459B (en) * | 2022-09-30 | 2024-09-27 | 连云港和昌机械有限公司 | Oil filling riser integrating automatic liquid receiving and oil gas collecting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110065920B (en) | 2021-05-18 |
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