CN108622841A - A kind of chuck entrucking oil filling riser for two media - Google Patents
A kind of chuck entrucking oil filling riser for two media Download PDFInfo
- Publication number
- CN108622841A CN108622841A CN201810524217.0A CN201810524217A CN108622841A CN 108622841 A CN108622841 A CN 108622841A CN 201810524217 A CN201810524217 A CN 201810524217A CN 108622841 A CN108622841 A CN 108622841A
- Authority
- CN
- China
- Prior art keywords
- rotation
- arm
- horizontal
- chuck
- filling riser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 65
- 239000011229 interlayer Substances 0.000 claims abstract description 18
- 239000010410 layer Substances 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 12
- 230000005484 gravity Effects 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 241000233855 Orchidaceae Species 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000008141 laxative Substances 0.000 description 1
- 230000002475 laxative effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The invention belongs to chemical technology fields, more particularly to a kind of chuck entrucking oil filling riser for two media, it is sequentially connected entrance short circuit, horizontal rotation machine, rotation inner arm, horizontal rotary mechanism, rotation outer arm and the nanubrium of entrance short circuit from top to bottom including column and on column, vertical rotating mechanism enables the outer end oscilaltion of rotation outer arm, entire oil filling riser uses double-layer hollow structure, and interconnects.The present invention drives oil filling riser to be docked with tank car automatically using horizontal rotary mechanism and vertical rotating mechanism, manual operation is not needed, entire pipeline uses double-layer hollow structure simultaneously, high-temperature steam is passed through in interlayer to heat internal medium, the temperature and mobility of keep medium, ensure that oil gas does not solidify and facilitate recycling, has the characteristics that automation is strong, leakage point is few, heating, temperature keeping is efficient, oil gas can recycle, entrucking height can be automatically positioned, service life is long, easy to operate, safe and reliable.
Description
Technical field
The invention belongs to chemical technology fields, and in particular to chuck entrucking oil filling riser.
Background technology
Oil filling riser is the special equipment during petrochemical industry fluid assembly and disassembly, also known as fluid assembly and disassembly arm.It uses rotary joint
It is connected with rigid conduit and elbow, liquid medium is transmitted between train, tank wagon and trestle storage and transportation pipeline to realize
Vehicular equipment has the features such as very high safety, flexibility and long lifespan, is oil transferring to replace old-fashioned hose to connect
Expect a kind of ideal special equipment in technique, can be also widely applied to chemical industry and other industry receives and dispatches all kinds of liquid charging stocks.
Currently, petroleum chemical enterprise fills the oil filling riser of the high viscosity mediums such as sulphur, pitch, there are pipeline, caliber, Universal rotary switching
Equal components composition.Fill it is this with high viscosity, the characteristic of low condensation point medium when easily there is medium solidification, pipeline blockage,
It influences oil product to dispatch from the factory on time, unnecessary predicament is brought to petroleum chemical enterprise.In view of the foregoing, need research and development for filling height
The chuck entrucking oil filling riser of viscosity, high-temperature medium reaches safety in production, ensures that oil product dispatches from the factory on time.
Invention content
When the purpose of the present invention is to solve to fill the high viscosity mediums such as sulphur, pitch, needing to heat liquid in pipe and protect
A kind of the problem of holding its mobility, it is proposed that chuck entrucking oil filling riser with heating function.
The present invention is in order to solve the above technical problems, used technical solution is：A kind of chuck for two media fills
Vehicle oil filling riser, includes the entrance short circuit of column and the setting of the upper end of the column side, and entrance short circuit upper end is medium inlet, lower end and level
Rotating mechanism connects, and connection rotation inner arm in horizontal rotary mechanism lower end simultaneously drives rotation inner arm to rotate in the horizontal direction, in rotation
Arm outer end is connect by another horizontal rotary mechanism with rotation outer arm, and being provided with vertical rotating mechanism on rotation outer arm makes rotation
Outer arm outer end can oscilaltion, the lower end of rotation outer arm outer end connect with the nanubrium for being inserted into tank car mouth, and entrance short circuit, level are revolved
Rotation mechanism, rotation inner arm, rotation outer arm, vertical rotating mechanism and nanubrium outer wall are all made of double-layer hollow structure, and interconnect,
Entrance short circuit side is provided with the steam being connected to interlayer and enters pipe, and nanubrium lower end is provided with the steam outlet pipe being connected to interlayer.
Further, outside is provided with sealing cover in the middle part of nanubrium, and sealing cover is close with tank car mouth after nanubrium is inserted into tank car mouth
It seals, Oil/Gas Pipe is provided on sealing cover, the oil gas in tank car is discharged, the outlet of Oil/Gas Pipe connect and fixes with column.
Further, Oil/Gas Pipe is inserted into steam outlet pipe, and steam outlet pipe heats Oil/Gas Pipe.
Further, it rotates and is provided with gravitational equilibrium mechanism on outer arm, gravitational equilibrium mechanism one end and vertical rotating mechanism
Fixing end connection, the other end connect with the outer end of rotation outer arm, the pulling force of gravitational equilibrium mechanism and the gravity phase for rotating outer arm
It is in an equilibrium state etc. rotation outer arm is made.
Further, gravitational equilibrium mechanism includes the balance plate of a fixing end for being fixed on vertical rotating mechanism, balance
Plate outer end and one end of gas spring connect, and the other end of gas spring is connect with the outer end of rotation outer arm, and balance plate connects with gas spring
It is a long slot bore to meet place, keeps the initial elastic force of gas spring adjustable.
Further, there are one vertical rotary joints for the setting of rotation outer arm outer end, make the nanubrium of rotation outer arm lower end always
Vertical state, vertical rotary joint is kept to keep entire Double layer pipeline unobstructed using double-layer hollow structure.
Further, horizontal rotary mechanism includes upper flange and the inner tube that is connect with upper flange, and upper flange lower end is connected with
Middle upper flange, middle upper flange are connect by bolt with middle lower flange, and middle lower flange and cage connection, shell pass through bearing and outer tube
It is rotatably connected, outer tube is connect with lower flange, and upper flange side is provided with driving mechanism, and driving mechanism drives laxative remedy by gear
Orchid rotation, upper flange and lower flange are both provided with the interlayer between side opening and inner and outer tubes and are connected to.
Further, the horizontal shell that vertical rotating mechanism includes fixing end and connect with fixing end, horizontal shell pass through
Ball is rotatably connected with horizontal outer tube, and horizontal inner tube is provided in horizontal outer tube, and horizontal shell side is provided with driving device,
The turbine rotation that driving device is connect by worm drive with horizontal outer tube, fixing end are provided with side opening and horizontal inner tube and level
Interlayer connection between outer tube.
Further, be provided with the supporting rack being rotatably connected with column below rotation inner arm, the rotary shaft of supporting rack with
Rotate the concentric rotation axis of the horizontal rotary mechanism above inner arm.
Further, steam outlet pipe is deep into the bottom of nanubrium interlayer in the middle part of nanubrium.
The technical effects of the invention are that：
The present invention drives oil filling riser to be docked with tank car automatically using horizontal rotary mechanism and vertical rotating mechanism, does not need manpower behaviour
Make, while entire pipeline uses double-layer hollow structure, high-temperature steam is passed through in interlayer, internal medium is heated, keeps being situated between
The temperature and mobility of matter, and sandwich is also used in petroleum vapor recovery pipeline, ensure that oil gas does not solidify and facilitate recycling, has
Automation is strong, leakage point is few, heating, temperature keeping is efficient, oil gas can recycle, entrucking height can be automatically positioned, service life is long, behaviour
Make the features such as convenient, safe and reliable, its popularization and application not only thoroughly solve the difficulty of high viscosity medium entrucking, are high viscositys
A kind of innovation in medium entrucking history.
Description of the drawings
Fig. 1 is the front view of the present invention；
Fig. 2 is the vertical view of the present invention；
Fig. 3 is the front view of horizontal rotary mechanism of the present invention；
Fig. 4 is the front view of vertical rotating mechanism of the invention.
Reference numeral：In 1- columns, 2- entrances short circuit, 3- horizontal rotary mechanisms, 301- upper flanges, 302- inner tubes, 303-
Upper flange, 304- kinds lower flange, 305- shells, 306- outer tubes, 307- lower flanges, 308- driving mechanisms, 4- rotations inner arm, 5- rotations
Turn the vertical rotating mechanism of outer arm, 6-, 601- fixing ends, the horizontal shells of 602-, the horizontal outer tubes of 603-, the horizontal inner tubes of 604-, 605-
Worm screw, 606- turbines, 7- tank cars mouth, 8- nanubriums, 9- steam enter pipe, 10- steam outlet pipe, 11- sealing covers, 12- Oil/Gas Pipes, 13-
Gravitational equilibrium mechanism, 1301- balance plates, 1302- gas springs, the vertical rotary joints of 14-, 15- supporting racks.
Specific implementation mode
Further specific detailed description is done to the present invention with reference to the accompanying drawings and detailed description.
As depicted in figs. 1 and 2, a kind of chuck entrucking oil filling riser for two media, including 1 upper end one of column 1 and column
The entrance short circuit 2 of side setting, 2 upper end of entrance short circuit are medium inlet, and lower end is connect with horizontal rotary mechanism 3, rotate horizontally machine
Connection rotation inner arm 4 in 3 lower end of structure simultaneously drives rotation inner arm 4 to rotate in the horizontal direction, and rotation 4 outer end of inner arm passes through another level
Rotating mechanism 3 is connect with rotation outer arm 5, and being provided with vertical rotating mechanism 6 on rotation outer arm 5 enables on 5 outer end of rotation outer arm
The lower end of lower lifting, rotation outer arm outer end 5 is connect with the nanubrium 8 for being inserted into tank car mouth 7, entrance short circuit 2, horizontal rotary mechanism 3, rotation
Turn inner arm 4, rotation outer arm 5, vertical rotating mechanism 6 and 3 outer wall of nanubrium and be all made of double-layer hollow structure, and interconnects, entrance
2 side of short circuit is provided with the steam being connected to interlayer and enters pipe 9, and 8 lower end of nanubrium is provided with the steam outlet pipe 10 being connected to interlayer, fills
When filling high viscosity, high-temperature medium, into interlayer being passed through high-temperature steam is heated, guarantee fill high viscosity, high-temperature medium stream
Dynamic property.
Further, the middle part of nanubrium 8 outside is provided with sealing cover 11, sealing cover 11 after nanubrium 8 is inserted into tank car mouth 7 with tank
Vehicle mouth 7 seals, and Oil/Gas Pipe 12 is provided on sealing cover 11, the oil gas in tank car is discharged, and outlet and the column 1 of Oil/Gas Pipe 12 connect
It connects and fixes, sealing cover 11 can prevent from the oil gas in tank car to be dispersed into air polluting environment, while can also pass through oil gas
Pipe 12 can also utilize petroleum vapor recovery again after being handled.
Further, Oil/Gas Pipe 12 is inserted into steam outlet pipe 10, and steam outlet pipe 10 heats Oil/Gas Pipe 12, prevents
Oil gas solidification in Oil/Gas Pipe 12, to block Oil/Gas Pipe 12.
Further, it rotates and is provided with gravitational equilibrium mechanism 13 on outer arm 5,13 one end of gravitational equilibrium mechanism and vertical rotation
The fixing end of mechanism 6 connects, and the other end is connect with the outer end of rotation outer arm 5, pulling force and the rotation outer arm 5 of gravitational equilibrium mechanism 13
Gravity it is equal so that rotation outer arm 5 is in an equilibrium state, gravitational equilibrium mechanism 13 is fixed on vertical whirler including one
The balance plate 1301 of the fixing end of structure 6,1301 outer end of balance plate are connect with one end of gas spring 1302, gas spring 1302 it is another
The outer end with rotation outer arm 5 is held to connect, balance plate 1301 is a long slot bore with 1302 junction of gas spring, makes gas spring 1302
Initial elastic force is adjustable.
Further, there are one vertical rotary joints 14 for the setting of 5 outer end of rotation outer arm, make the nanubrium 8 of 5 lower end of rotation outer arm
Remain that vertical state, vertical rotary joint 14 keep entire Double layer pipeline unobstructed using double-layer hollow structure.
Further, horizontal rotary mechanism 3 includes upper flange 301 and the inner tube 302 being connect with upper flange 301, upper flange
301 lower ends are connected with middle upper flange 303, and middle upper flange 303 is connect by bolt with middle lower flange 304, middle lower flange 304 with it is outer
Shell 305 connects, and shell 305 is rotatably connected by bearing and outer tube 306, and outer tube 306 is connect with lower flange 307, upper flange 301
Side is provided with driving mechanism 308, and pneumatic, hydraulic pressure or electronic may be used in driving mechanism 308, and driving mechanism 308 passes through tooth
Wheel drive lower flange 307 rotates, and upper flange 301 and lower flange 307 are both provided between side opening and inner tube 302 and outer tube 305
Interlayer is connected to, and staff need to only control the operating of driving mechanism 308, can be the alignment tank of nanubrium 8 for rotating 5 outer end of outer arm
Vehicle mouth 7 carries out filling medium.
Further, vertical rotating mechanism 6 includes fixing end 601 and the horizontal shell 602 being connect with fixing end 601, water
Flat housing 602 is rotatably connected by ball and horizontal outer tube 603, and horizontal inner tube 604 is provided in horizontal outer tube 603, horizontal
603 side of shell is provided with driving device 308, and driving device 308 drives the whirlpool being connect with horizontal outer tube 603 by worm screw 605
606 rotation of wheel, the interlayer that fixing end 601 is provided between side opening and horizontal inner tube 604 and horizontal outer tube 603 are connected to, and are ensured high
Warm steam passage is unimpeded.
Further, 4 lower section of rotation inner arm is provided with the supporting rack 15 being rotatably connected with column 1, the rotation of supporting rack 15
The concentric rotation axis of shaft and the horizontal rotary mechanism 3 of 4 top of rotation inner arm, supporting rack 15 are used for the weight of balance rotating inner arm 4
Power is that the rotation rotation of inner arm 4 is more smooth.
Further, steam outlet pipe 10 is deep into the bottom of 8 interlayer of nanubrium from 8 middle part of nanubrium, makes one direct current of high-temperature steam
It is discharged from steam outlet pipe 10 after to the bottom of 8 interlayer of nanubrium, so that entire nanubrium 8 is all heated, prevent medium from solidifying.
The course of work：Tank car is reached by column 1, it is that rotation outer arm 5 rotates that staff, which controls driving mechanism 308, is made
Then 8 face tank car mouth 7 of nanubrium drives vertical rotating mechanism 6 that nanubrium 8 is made to decline, drops to sealing cover 11 and seal tank car mouth 7
It is next, enter to be passed through high-temperature steam in pipe 9 to steam and entire hydraulic pressure oil filling riser is heated, after temperature reaches set temperature, to
High viscosity medium is added in entrance short circuit 2, and while medium is added in tank car, the oil gas in tank car is discharged from Oil/Gas Pipe 12
And collect, under the heat effect of high-temperature steam, medium and oil gas are above set temperature and will not solidify, and smoothly fill,
After filling, nanubrium 8 is risen, tank car drives away.
Embodiment provided above is the better embodiment of the present invention, only is used for facilitating illustrating the present invention, not to this hair
It is bright to make any form of restriction, any those of ordinary skill in the art, if not departing from the put forward skill of the present invention
In the range of art feature, the equivalent embodiment that part is changed or modified is made using disclosed technology contents, and
Without departing from the technical feature content of the present invention, in the range of still falling within the technology of the present invention feature.
Claims (10)
1. a kind of chuck entrucking oil filling riser for two media, it is characterised in that：Including column（1）And column（1）Upper end side
The entrance short circuit of setting（2）, entrance short circuit（2）Upper end is medium inlet, lower end and horizontal rotary mechanism（3）Connection, level rotation
Rotation mechanism（3）Lower end connection rotation inner arm（4）And drive rotation inner arm（4）It rotates in the horizontal direction, rotates inner arm（4）Outer end is logical
Cross another horizontal rotary mechanism（3）With rotation outer arm（5）Connection rotates outer arm（5）On be provided with vertical rotating mechanism（6）Make
Rotate outer arm（5）Outer end can oscilaltion, rotation outer arm outer end（5）Lower end be inserted into tank car mouth（7）Nanubrium（8）Even
It connects, entrance short circuit（2）, horizontal rotary mechanism（3）, rotation inner arm（4）, rotation outer arm（5）, vertical rotating mechanism（6）And nanubrium
（3）Outer wall is all made of double-layer hollow structure, and interconnects, entrance short circuit（2）Side is provided with the steam being connected to interlayer and enters
Pipe（9）, nanubrium（8）Lower end is provided with the steam outlet pipe being connected to interlayer（10）.
2. a kind of chuck entrucking oil filling riser for two media according to claim 1, it is characterised in that：The nanubrium
（8）It is provided with sealing cover on the outside of middle part（11）, sealing cover（11）In nanubrium（8）It is inserted into tank car mouth（7）Afterwards with tank car mouth（7）It is close
Envelope, sealing cover（11）On be provided with Oil/Gas Pipe（12）By the oil gas discharge in tank car, Oil/Gas Pipe（12）Outlet and column（1）Even
It connects and fixes.
3. a kind of chuck entrucking oil filling riser for two media according to claim 2, it is characterised in that：The Oil/Gas Pipe
（12）It is inserted into steam outlet pipe（10）It is interior, steam outlet pipe（10）To Oil/Gas Pipe（12）It is heated.
4. a kind of chuck entrucking oil filling riser for two media according to claim 1, it is characterised in that：Outside the rotation
Arm（5）On be provided with gravitational equilibrium mechanism（13）, gravitational equilibrium mechanism（13）One end and vertical rotating mechanism（6）Fixing end connect
It connects, the other end and rotation outer arm（5）Outer end connection, gravitational equilibrium mechanism（13）Pulling force with rotation outer arm（5）Gravity phase
Etc. making rotation outer arm（5）In an equilibrium state.
5. a kind of chuck entrucking oil filling riser for two media according to claim 4, it is characterised in that：The gravity is flat
Weigh mechanism（13）It is fixed on vertical rotating mechanism including one（6）Fixing end balance plate（1301）, balance plate（1301）Outside
End and gas spring（1302）One end connection, gas spring（1302）The other end with rotation outer arm（5）Outer end connection, balance plate
（1301）With gas spring（1302）Junction is a long slot bore, makes gas spring（1302）Initial elastic force it is adjustable.
6. a kind of chuck entrucking oil filling riser for two media according to claim 1, it is characterised in that：Outside the rotation
Arm（5）There are one vertical rotary joints for outer end setting（14）, make rotation outer arm（5）The nanubrium of lower end（8）Remain vertical shape
State, vertical rotary joint（14）Keep entire Double layer pipeline unobstructed using double-layer hollow structure.
7. being used for the chuck entrucking oil filling riser of two media according to any one described in claim 1 to 6, it is characterised in that：Institute
State horizontal rotary mechanism（3）Including upper flange（301）With with upper flange（301）The inner tube of connection（302）, upper flange（301）Under
End is connected with middle upper flange（303）, middle upper flange（303）Pass through bolt and middle lower flange（304）Connection, middle lower flange（304）
With shell（305）Connection, shell（305）Pass through bearing and outer tube（306）It is rotatably connected, outer tube（306）With lower flange（307）
Connection, upper flange（301）Side is provided with driving mechanism（308）, driving mechanism（308）Lower flange is driven by gear（307）
Rotation, upper flange（301）And lower flange（307）It is both provided with side opening and inner tube（302）And outer tube（305）Between interlayer connect
It is logical.
8. a kind of chuck entrucking oil filling riser for two media according to claim 7, it is characterised in that：The vertical rotation
Rotation mechanism（6）Including fixing end（601）With with fixing end（601）The horizontal shell of connection（602）, horizontal shell（602）Pass through
Ball and horizontal outer tube（603）It is rotatably connected, horizontal outer tube（603）Inside it is provided with horizontal inner tube（604）, horizontal shell
（603）Side is provided with driving device（308）, driving device（308）Pass through worm screw（605）Driving and horizontal outer tube（603）Even
The turbine connect（606）Rotation, fixing end（601）It is provided with side opening and horizontal inner tube（604）With horizontal outer tube（603）Between folder
Layer connection.
9. a kind of chuck entrucking oil filling riser for two media according to claim 1, it is characterised in that：In the rotation
Arm（4）Lower section is provided with and column（1）The supporting rack being rotatably connected（15）, supporting rack（15）Rotary shaft with rotation inner arm
（4）The horizontal rotary mechanism of top（3）Concentric rotation axis.
10. a kind of chuck entrucking oil filling riser for two media according to claim 1, it is characterised in that：The steam
Outlet pipe（10）From nanubrium（8）Middle part is deep into nanubrium（8）The bottom of interlayer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810524217.0A CN108622841A (en) | 2018-05-28 | 2018-05-28 | A kind of chuck entrucking oil filling riser for two media |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810524217.0A CN108622841A (en) | 2018-05-28 | 2018-05-28 | A kind of chuck entrucking oil filling riser for two media |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108622841A true CN108622841A (en) | 2018-10-09 |
Family
ID=63690294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810524217.0A Pending CN108622841A (en) | 2018-05-28 | 2018-05-28 | A kind of chuck entrucking oil filling riser for two media |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108622841A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109734038A (en) * | 2018-12-28 | 2019-05-10 | 连云港华泰石油化工机械有限公司 | A kind of oil filling riser with double equilibrium functions |
| CN110031061A (en) * | 2019-04-19 | 2019-07-19 | 中国石油化工股份有限公司 | A kind of reusable level sensing head for high viscosity fluid |
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|---|---|---|---|---|
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| CN110031061A (en) * | 2019-04-19 | 2019-07-19 | 中国石油化工股份有限公司 | A kind of reusable level sensing head for high viscosity fluid |
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