CN106840978A - A kind of abrasive disk type crushing experiment device and method suitable for hydrate particle in pipe - Google Patents
A kind of abrasive disk type crushing experiment device and method suitable for hydrate particle in pipe Download PDFInfo
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- CN106840978A CN106840978A CN201710024436.8A CN201710024436A CN106840978A CN 106840978 A CN106840978 A CN 106840978A CN 201710024436 A CN201710024436 A CN 201710024436A CN 106840978 A CN106840978 A CN 106840978A
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- 239000002245 particle Substances 0.000 title claims abstract description 53
- 238000002474 experimental method Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000003801 milling Methods 0.000 claims abstract description 10
- 239000007787 solid Substances 0.000 claims abstract description 9
- 238000012544 monitoring process Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 15
- 239000004570 mortar (masonry) Substances 0.000 claims description 9
- 239000002105 nanoparticle Substances 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 3
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 abstract description 12
- 238000005243 fluidization Methods 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 10
- 150000004677 hydrates Chemical class 0.000 description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 238000000227 grinding Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Crushing And Grinding (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention discloses a kind of abrasive disk type crushing experiment device suitable for hydrate particle in pipe, it includes material pre-mixing apparatus（1）, broken duct section, broken mill unit, power unit（2）, reception device（3）And monitor control system（4）；It also discloses the method that abrasive disk type crushes hydrate particle in suitable for managing.The beneficial effects of the invention are as follows：Compact conformation, gas hydrate particle can be carried out in conveyance conduit directly second-time breakage, bulky grain gas hydrate particle, the granularity of milling of efficiently milling can adjust, it is epigranular of milling, simple to operate, solve the first separation in solid state fluidizing exploitation thinking and the defeated problem of fluidisation pipe.
Description
Technical field
It is particularly a kind of to be applied to hydrate in pipe the present invention relates to the technical field of sea bed gas hydrate exploitation
The abrasive disk type crushing experiment device and method of grain.
Background technology
Gas hydrates are also called combustible ice, and reserves are huge, more than 2 times of known carbon fossil fuel summation, mainly deposit
It is land permafrost soil and ocean seabed, the wherein reserves of ocean sea bed gas hydrate are considerably beyond land permafrost soil area
The reserves in domain, are new unconventional energy resource of the 21 century with very big Exploitation Potential.Before China's ocean gas hydrate resource
Scape is very wide, estimates that only the total resources of Gas Hydrate of The South China Sea just reaches 65,000,000,000 tons of oil according to Ministry of Land and Resources researcher
Equivalent, is approximately equivalent to land and offshore oil natural gas total resources the half of China.
Ocean gas hydrate hides 1000 ~ 1500m of the depth of water, and at present, China has carried out gas water twice at the South Sea
Compound is sampled, and analytical sampling result finds that China's natural gas hydrate has and buries the characteristics of shallow, cementing properties is poor, using routine
The recovery methods such as heat shock, step-down, note chemical reagent are exploited easily initiation geological disaster and environmental security.In view of
This, proposes the solid state fluidizing lasting exploit method for sea-bottom shallow gas hydrates.Realize that solid state fluidizing exploits thinking, its
Essence is to carry out solid digging using gas hydrates as a kind of seabed mineral, and undersea mining car carries out broken adopting to mineral reserve
Pick, while rear portion conveyance conduit forms negative pressure, surrounding seawater flows into conveyance conduit, flowing under suction function by broken position
When drive the broken hydrate of mining vehicle and silt, rubble etc. to enter conveyance conduit in the lump.This is a kind of different from existing oil day
Right gas or undersea mining（The easy decomposition gasification of hydrate mineral reserve object）The new developing thought of mode.
When being exploited using solid state fluidizing production technique, the crucial problem for running into is how the broken day of efficient cutting
Right gas hydrate.First, first digging gas hydrates out inevitably contain the impurity such as silt, rubble, are
Ensure its purity, it need to for the first time be separated；Secondly, gas hydrates are in irregular block solid-state, mined
After to support that ship is decomposed by pipeline transportation to sea, in order to ensure hydrate particle fluidisation convey, it is necessary to be broken
It is broken into nuggets that are uniform, being of moderate size.Second-time breakage is carried out to the gas hydrates bulky grain that first digging is obtained,
It is the step for realizing that above-mentioned two purpose is indispensable.
The content of the invention
The present invention solves first separation and the defeated problem of fluidisation pipe in solid state fluidizing exploitation thinking, there is provided a kind of structure is tight
Gather, can directly carry out second-time breakage, bulky grain natural gas hydration of efficiently milling to gas hydrate particle in conveyance conduit
Thing, granularity of milling can adjust, epigranular of milling, the abrasive disk type crushing experiment suitable for hydrate particle in pipe simple to operate
Device and method.
The purpose of the present invention is achieved through the following technical solutions：A kind of abrasive disk type suitable for hydrate particle in pipe breaks
Broken experimental provision, it includes material pre-mixing apparatus, broken duct section, broken mill unit, power unit, reception device and prison
Survey control system；
Described broken duct section is made up of end to end broken pipeline and outlet elbow, crushes the other end and material of pipeline
Pre-mixing apparatus are connected, and the other end of outlet elbow is connected with reception device；
The output end of described power unit has been sequentially connected with rotation monitoring sensor and major axis, and major axis is passed through along broken conduit axis
Export bend pipe and rotation be installed in broken pipeline；
Described broken mill unit by be sequentially arranged from left to right in the first order mill in broken pipeline, second level mill,
Third level mill and fourth stage mill are constituted, and first order mill and third level mill are fixedly installed on major axis, second level mill
Disk and fourth stage mill through bearing A rotation be installed on major axis, between adjacent two-stage mill gap by successively decreasing step by step from left to right,
The reciprocal mill line in direction is arranged with the relative facade of adjacent two-stage mill, the gash depth of line is ground on mill by mill outside
To center position by gradually becoming shallower as deeply, the mill line on mill offers interconnected edge by least sixth area, in each area
Charging aperture and discharging opening, are formed with drainage notch between charging aperture and discharging opening, the charging aperture and discharging opening on each mill
The equal correspondent equal of area of passage；
The arrival end and the port of export of described broken duct section are provided with data monitoring unit, and data monitoring unit is passed by flow velocity
Sensor, temperature sensor, pressure sensor and particle size analyzer composition, described flow sensor, temperature sensor, pressure sensing
Device, particle size analyzer and rotation monitoring sensor are connected with monitor control system.
Support fixation kit A and support fixation kit B is provided with described broken pipeline, support fixation kit A is located at
The left side of first order mill, support fixation kit B is located at the right side of fourth stage mill, support fixation kit A and the fixed group of support
Bearing B is mounted in part B.
Described major axis rotation is installed in bearing B.
Described major axis is provided with dynamic seal with the contact position of outlet elbow.
Abutment sleeve of the described adjacent two-stage mill through being set on major axis separates.
Described broken pipeline is connected with outlet elbow through flange.
Described second, the charging aperture on level Four mill surrounds ring-shaped.
First and third grade of described mill is installed on major axis through flat key.
Described material pre-mixing apparatus are screw rod mortar pump.
A kind of described experimental provision abrasive disk type crushes the method suitable for hydrate particle in pipe, and it includes following step
Suddenly：
S1, startup power unit, power unit drive major axis to rotate, and major axis drives first order mill and third level mill to do and rotate
Motion；
S2, bulky grain hydrate and water are pre-mixed in storage tank, start screw rod mortar pump, screw rod mortar pump is by storage tank
Interior bulky grain hydrate and water are pumped into broken pipeline；
S3, bulky grain hydrate sequentially grind through the charging aperture on first order mill, drainage notch and discharging opening into the first order
, be hydrated for bulky grain under the collective effect of reciprocal mill line between two mills by first area that mills that disk and second level mill are formed
Thing is milled into smaller particle；
S4, the guide functions due to grinding line, the little particle hydrate in step S3 is sequentially through the charging of second level mill edge
Second area that mills that mouth, drainage notch and discharging opening are formed into second level mill and third level mill is milled, and is ground
The 3rd area that mills for entering third level mill and the formation of fourth stage mill after mill is milled, and is finally milled into nano sized particles water
Compound and water, nano sized particles hydrate flows out together with water and enters in reception device through outlet elbow to be collected.
The present invention has advantages below：Compact conformation of the present invention, can be directly in conveyance conduit to gas hydrates
Grain carry out second-time breakage, efficiently mill bulky grain gas hydrates, granularity of milling can adjust, epigranular of milling, operation letter
It is single, solve the first separation in solid state fluidizing exploitation thinking and the defeated problem of fluidisation pipe.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is broken mill unit and major axis, the scheme of installation of broken pipeline；
Fig. 3 is the structural representation of first order mill；
Fig. 4 is the structural representation of second level mill；
In figure, 1- material pre-mixing apparatus, 2- power units, 3- reception devices, 4- monitor control systems, 5- crushes pipeline, 6-
Outlet elbow, 7- rotates monitoring sensor, 8- major axis, 9- first order mills, 10- second level mill, 11- third level mills, 12-
Fourth stage mill, 13- bearings A, 14- mill line, 15- charging apertures, 16- discharging openings, 17- drainage notches, 18- flow sensors, 19-
Temperature sensor, 20- pressure sensors, 21- particle size analyzers, 22- support fixation kit A, 23- support fixation kit B, 24- bearings
B, 25- dynamic seal, 26- abutment sleeves, 27- flanges, 28- flat keys.
Specific embodiment
The present invention will be further described below in conjunction with the accompanying drawings, and protection scope of the present invention is not limited to as described below：
As shown in Fig. 1 ~ 4, a kind of abrasive disk type crushing experiment device suitable for hydrate particle in pipe, it is pre-mixed including material
Device 1, broken duct section, broken mill unit, power unit 2, reception device 3 and monitor control system 4.
Described broken duct section is made up of end to end broken pipeline 5 and outlet elbow 6, crushes pipeline 5 with outlet
Bend pipe 6 is connected through flange 27, and the other end of broken pipeline 5 is connected with material pre-mixing apparatus 1, and material pre-mixing apparatus 1 are spiral shell
Bar mortar pump, the other end of outlet elbow 6 is connected with reception device 3, and reception device 3 is used to collect the nano sized particles water after crushing
Compound.
The output end of described power unit has been sequentially connected with rotation monitoring sensor 7 and major axis 8, and major axis 8 is along broken pipe
The axis of road 5 runs through outlet elbow 6 and rotation is installed in broken pipeline 5, and major axis 8 is provided with dynamic with the contact position of outlet elbow 6
Seal 25.
Described broken mill unit by being sequentially arranged in the first order mill 9, second level in broken pipeline 5 from left to right
Mill 10, third level mill 11 and fourth stage mill 12 are constituted, and first order mill 9 is identical with the structure of third level mill 11, and second
Level mill 10 is identical with the structure of fourth stage mill 12, and described first order mill 9 and third level mill 11 is fixedly installed in length
On axle 8, described second level mill 10 and fourth stage mill 12 are installed on major axis 8 through bearing A13 rotations, adjacent two-stage mill
Gap by successively decreasing and gap can be adjusted according to hydrate particle Particle size requirements, adjacent two-stage mill step by step from left to right between disk
Abutment sleeve 26 through being set on major axis 8 separates, and it is reciprocal to be arranged with direction on the relative facade of adjacent two-stage mill
Mill line 14, on mill grind line 14 gash depth by mill outward flange to center position by gradually becoming shallower as deeply, the mill line on mill
14, by least sixth area, offer interconnected charging aperture 15 and discharging opening 16, charging aperture 15 and discharging opening in each area
Drainage notch 17 is formed between 16, drainage notch 17 is beneficial to hydrate particle and smoothly enters into the area that mills.On each mill
The equal correspondent equal of the area of passage of charging aperture 15 and discharging opening 16.
The arrival end and the port of export of described broken duct section are provided with data monitoring unit, and data monitoring unit is by flowing
Fast sensor 18, temperature sensor 19, pressure sensor 20 and particle size analyzer 21 are constituted, and described flow sensor 18, temperature is passed
Sensor 19, pressure sensor 20, particle size analyzer 21 and rotation monitoring sensor 7 are connected with monitor control system 4.Described stream
Fast sensor 18 is used for the flow velocity of real-time monitoring fluid, and by data feedback to monitor control system 4；Described temperature sensor
19 and pressure sensor 20 be respectively used to the temperature and pressure of real-time detection fluid and be converted into electric signal to pass to monitoring
Control system 4；Described particle size analyzer 21 is used for hydrate particle granularity in real-time monitoring fluid, and data feedback is controlled to monitoring
System processed 4；Described rotation monitoring sensor 7 is used to the rotating speed of real-time detection major axis 8 and is converted to data signal passing to prison
Control system 4 is surveyed, so as to more intuitively observe the broken situation of hydrate particle in pipeline.
Support fixation kit A22 and support fixation kit B23 is provided with described broken pipeline 5, fixation kit is supported
A22 is located at the left side of first order mill 9, and support fixation kit B23 is located at the right side of fourth stage mill 12, supports fixation kit
Bearing B24 is mounted in A22 and support fixation kit B23；The described rotation of major axis 8 is installed in bearing B24.
Described second, the charging aperture 15 on level Four mill surrounds ring-shaped；First and third grade of described mill is through flat key
28 are installed on major axis 8.
A kind of described experimental provision abrasive disk type crushes the method suitable for hydrate particle in pipe, and it includes following step
Suddenly：
S1, startup power unit 2, power unit 2 drive major axis 8 to rotate, and major axis 8 drives first order mill 9 and third level mill
11 rotate；
S2, bulky grain hydrate and water are pre-mixed in storage tank, start screw rod mortar pump, screw rod mortar pump is by storage tank
Interior bulky grain hydrate and water are pumped into broken pipeline 5；
S3, bulky grain hydrate sequentially enter through the charging aperture 15 on first order mill 9, drainage notch 17 and discharging opening 16
First area that mills that one-level mill 9 and second level mill 10 are formed, between two mills under the collective effect of reciprocal mill line 14
Bulky grain hydrate is milled into smaller particle；
S4, the guide functions due to grinding line 14, the little particle hydrate in step S3 is sequentially through the edge of second level mill 10
Charging aperture 15, drainage notch 17 and discharging opening 16 are milled into second that second level mill 10 and third level mill 11 are formed
Area is milled, and the 3rd that third level mill 11 and fourth stage mill 12 are formed is entered as shown in figure 2 by the arrow, after milling
The area that mills is milled, and is finally milled into nano sized particles hydrate and water, and nano sized particles hydrate epigranular, minimum after crushing
Particle hydrate flows out together with water and enters in reception device 3 through outlet elbow 6 to be collected.Therefore this experimental provision realizes height
Effect crushing large particle gas hydrate particle, and gas hydrate particle can be carried out in conveyance conduit directly secondary
It is broken, green second-time breakage purpose has been reached, solve the first separation in solid state fluidizing exploitation thinking and the defeated problem of fluidisation pipe.
Claims (10)
1. it is a kind of suitable for pipe in hydrate particle abrasive disk type crushing experiment device, it is characterised in that：It is premixed including material
Attach together and put（1）, broken duct section, broken mill unit, power unit（2）, reception device（3）And monitor control system（4）；
Described broken duct section is by end to end broken pipeline（5）And outlet elbow（6）Composition, crushes pipeline（5）It is another
One end and material pre-mixing apparatus（1）Connection, outlet elbow（6）The other end and reception device（3）Connection；
The output end of described power unit has been sequentially connected with rotation monitoring sensor（7）And major axis（8）, major axis（8）Along broken
Pipeline（5）Axis runs through outlet elbow（6）And rotation is installed on broken pipeline（5）It is interior；
Described broken mill unit by being sequentially arranged in broken pipeline from left to right（5）Interior first order mill（9）, the second level
Mill（10）, third level mill（11）With fourth stage mill（12）Composition, first order mill（9）With third level mill（11）It is solid
Dingan County is loaded on major axis（8）On, second level mill（10）With fourth stage mill（12）Through bearing A（13）Rotation is installed on major axis
（8）On, between adjacent two-stage mill gap by successively decreasing step by step from left to right, the side of being arranged with the relative facade of adjacent two-stage mill
To reciprocal mill line（14）, line is ground on mill（14）Gash depth by mill outward flange to center position by gradually becoming shallower as deeply,
Mill line on mill（14）By at least sixth area, interconnected charging aperture is offered in each area（15）And discharging opening
（16）, charging aperture（15）And discharging opening（16）Between be formed with drainage notch（17）, the charging aperture on each mill（15）With go out
Material mouth（16）The equal correspondent equal of area of passage；
The arrival end and the port of export of described broken duct section are provided with data monitoring unit, and data monitoring unit is passed by flow velocity
Sensor（18）, temperature sensor（19）, pressure sensor（20）And particle size analyzer（21）Composition, described flow sensor（18）、
Temperature sensor（19）, pressure sensor（20）, particle size analyzer（21）And rotate monitoring sensor（7）And monitor control system
（4）Connection.
2. it is according to claim 1 it is a kind of suitable for pipe in hydrate particle abrasive disk type crushing experiment device, its feature
It is：Described broken pipeline（5）Inside it is provided with support fixation kit A（22）With support fixation kit B（23）, the fixed group of support
Part A（22）Positioned at first order mill（9）Left side, support fixation kit B（23）Positioned at fourth stage mill（12）Right side, support
Fixation kit A（22）With support fixation kit B（23）Inside it is mounted on bearing B（24）.
3. it is according to claim 1 it is a kind of suitable for pipe in hydrate particle abrasive disk type crushing experiment device, its feature
It is：Described major axis（8）Rotation is installed on bearing B（24）It is interior.
4. it is according to claim 2 it is a kind of suitable for pipe in hydrate particle abrasive disk type crushing experiment device, its feature
It is：Described major axis（8）With outlet elbow（6）Contact position dynamic seal is installed（25）.
5. it is according to claim 1 it is a kind of suitable for pipe in hydrate particle abrasive disk type crushing experiment device, its feature
It is：Described adjacent two-stage mill is through being set in major axis（8）On abutment sleeve（26）Separate.
6. it is according to claim 1 it is a kind of suitable for pipe in hydrate particle abrasive disk type crushing experiment device, its feature
It is：Described broken pipeline（5）With outlet elbow（6）Through flange（27）Connection.
7. it is according to claim 1 it is a kind of suitable for pipe in hydrate particle abrasive disk type crushing experiment device, its feature
It is：Described second, the charging aperture on level Four mill（15）Surround ring-shaped.
8. it is according to claim 1 it is a kind of suitable for pipe in hydrate particle abrasive disk type crushing experiment device, its feature
It is：First and third grade of described mill is through flat key（28）It is installed on major axis（8）On.
9. it is according to claim 1 it is a kind of suitable for pipe in hydrate particle abrasive disk type crushing experiment device, its feature
It is：Described material pre-mixing apparatus（1）It is screw rod mortar pump.
10. a kind of experimental provision abrasive disk type according to any one in claim 1 ~ 9 is broken to be applied to hydrate in pipe
The method of particle, it is characterised in that：It is comprised the following steps：
S1, startup power unit（2）, power unit（2）Drive major axis（8）Rotate, major axis（8）Drive first order mill（9）With
Third level mill（11）Rotate；
S2, bulky grain hydrate and water are pre-mixed in storage tank, start screw rod mortar pump, screw rod mortar pump is by storage tank
Interior bulky grain hydrate and water pump into broken pipeline（5）It is interior；
S3, bulky grain hydrate are sequentially through first order mill（9）On charging aperture（15）, drainage notch（17）And discharging opening
（16）Into first order mill（9）With second level mill（10）First area that mills for being formed, the reciprocal mill line between two mills
（14）Collective effect under bulky grain hydrate is milled into smaller particle；
S4, due to mill line（14）Guide functions, the little particle hydrate in step S3 is sequentially through second level mill（10）Edge
The charging aperture at place（15）, drainage notch（17）And discharging opening（16）Into second level mill（10）With third level mill（11）Shape
Into second area that mills milled, after milling enter third level mill（11）With fourth stage mill（12）The 3rd for being formed
The area that mills is milled, and is finally milled into nano sized particles hydrate and water, and nano sized particles hydrate flows out and together with water through going out
Mouth bend pipe（6）Into reception device（3）Interior collection.
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| CN108827754A (en) * | 2018-05-25 | 2018-11-16 | 西南石油大学 | A kind of crushing system for large scale gas hydrates rock sample |
| CN111672399A (en) * | 2020-06-22 | 2020-09-18 | 巩莉 | Preparation process of novel exterior wall thermal insulation coating |
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| CN108468534B (en) * | 2018-04-03 | 2020-08-07 | 西南石油大学 | Simulation experiment device and method for secondary crushing and fluidization of seabed natural gas hydrate |
| CN108827754A (en) * | 2018-05-25 | 2018-11-16 | 西南石油大学 | A kind of crushing system for large scale gas hydrates rock sample |
| WO2019223264A1 (en) * | 2018-05-25 | 2019-11-28 | 西南石油大学 | Crushing system for large natural gas hydrate rock sample |
| CN108827754B (en) * | 2018-05-25 | 2020-12-22 | 西南石油大学 | A broken system for jumbo size natural gas hydrate rock specimen |
| US11465152B2 (en) | 2018-05-25 | 2022-10-11 | Southwest Petroleum University | Crushing system for large-size natural gas hydrate rock samples |
| CN111672399A (en) * | 2020-06-22 | 2020-09-18 | 巩莉 | Preparation process of novel exterior wall thermal insulation coating |
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