CN109883946A - A kind of high pressure resistant microscopic observation thermostatic platform with cantilever operation - Google Patents
A kind of high pressure resistant microscopic observation thermostatic platform with cantilever operation Download PDFInfo
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- CN109883946A CN109883946A CN201910071095.9A CN201910071095A CN109883946A CN 109883946 A CN109883946 A CN 109883946A CN 201910071095 A CN201910071095 A CN 201910071095A CN 109883946 A CN109883946 A CN 109883946A
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- wall surface
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Abstract
The present invention discloses a kind of high pressure resistant microscopic observation thermostatic platform with cantilever operation.The thermostatic platform includes dismountable left side wall surface, visual windows, fin, fixed right side wall surface, the front-rear side walls of fixation, fixation top wall surface and temperature control medium channel；The top wall surface of dismountable left side wall surface and fixed front-rear side walls, fixation forms a closed space, and the cold bench of a recess is provided with below the space, is provided with fin on the wall surface of the recess；Visual windows are offered on the top wall surface of the fixation；Fixed baffle is installed on dismountable left side wall surface；Hole slot is offered on dismountable left side wall surface, cantilever can be operated by running through to have in the hole slot.Thermostatic platform of the present invention can directly under high pressure, the nucleation and growth process of microscopic observation gas hydrate particle, measure gas hydrate particle between adhesion strength, evaluate hydrate inhibitor performance, device is simple, convenient for operation.
Description
Technical field
The present invention relates to oil-gas pipeline flowing safety and gas hydrate growth kinetics, and in particular to a kind of band cantilever behaviour
The high pressure resistant microscopic observation thermostatic platform made.
Technical background
Gas hydrate is mainly guest molecule (such as methane, ethane, propane, carbon dioxide, hydrogen sulfide etc.) and hydrone
Under the conditions of certain environment, pass through a kind of crystal structure for similar ice-like that van der Waals interaction is formed.In the exploitation of hydrate
In oil-gas pipeline transportational process, due to the cryogenic high pressure environment in pipeline, water and natural gas in pipeline are easily integrated into one
It rises and forms hydrate particle, and further assemble and agglomerate and block pipeline, production efficiency reduction and production is caused to be stopped work, this
Problem long-standing problem the production and transportation of oil gas.
Hydrate particle adhesion strength is an important indicator for influencing hydrate aggregation tendency, in order to solve oil-gas pipeline water
Object agglomeration blocking pipeline is closed, scholars develop a set of high voltage bearing micro-manipulation device, investigated many factors to hydrate
The influence of particle adhesion strength.But this device is complicated, motion arm and drive system are in hyperbaric environment, and this requires pressure resistances
And it is explosion-proof.The motion arm and drive system of apparatus of the present invention reduce much the resistance to pressure request of equipment all in atmospheric pressure environment, and
Equipment volume is small, at low cost.In addition, so far, compressed gas hydrate crystal is generated, is grown, the microscopic observation of aggregation tests mesh
Before have not yet seen report.
Based on the above issues, invention provides a kind of high pressure resistant microscopic observation thermostatic platform with cantilever operation, volumes
Small, device is simple, easy to operate, at low cost, can directly measure the adhesion strength under condition of high voltage between gas hydrate particle, comment
The performance of valence additive, microscopic observation study compressed gas hydrate crystal and generate, growth, assemble, and fill up this aspect research
Blank.
Summary of the invention
The object of the present invention is to provide a kind of high pressure resistant microscopic observation thermostatic platform with cantilever operation, microscopic observation gas water
It closes object and grows nucleation process, measure the adhesion strength between compressed gas hydrate particle, the device of the invention is small in size, operation letter
Single, easy to operate, production cost is low.
Technical solution of the present invention is as follows:
A kind of high pressure resistant microscopic observation thermostatic platform with cantilever operation, including dismountable left side wall surface, visual windows, fin,
The fixed front-rear side walls of right side wall surface, fixation, the top wall surface of fixation and temperature control medium channel；Dismountable left side wall
The top wall surface of face and fixed front-rear side walls, fixation forms a closed space, is provided with a recess below the space
Cold bench, be provided with fin on the wall surface of the recess；Visual windows are offered on the top wall surface of the fixation；It is described removable
Fixed baffle is installed on the left side wall surface unloaded；Hole slot is offered on dismountable left side wall surface, is passed through in the hole slot
Cantilever can be operated by being installed with, and the cantilever that operates extends in the closed space through fixed baffle, the flexibility
Material is covered on baffle and left wall, and dismountable left side wall surface is equipped with temperature sensor；The right side wall surface of the fixation
Cantilever mounted, inlet channel and pressure sensor are installed；It is equipped on the inside of cold bench for the equally distributed fin of augmentation of heat transfer.
Further, it is surrounded with temperature control medium channel outside the cold bench, the temperature control medium channel is externally connected with pipe
Road；The temperature control is a ring structure by channel.
Further, cold bench is made of stainless steel, and respectively there are visual windows (sapphire, quartz in cold bench top and bottom center
Glass, polycarbonate).
Further, left and right wall surface is equipped with operation cantilever above cold bench, wherein left side wall surface is detachable wall surface, installation
There is the cantilever movably operated, right side wall surface is equipped with cantilever mounted；The cantilevered distal end that operates inserts glass fibre,
Connection type is insertion cantilevered distal end.
Further, a hole slot is provided on cold bench upper left wall surface, the movable operation cantilever with baffle passes through hole
Slot, which is placed in wall surface on the left of cold bench, and fits closely with it, which can move left and right along duct.
Further, the flexible material is rubber membrane, polyethylene film or pellosil, and when air inlet, which can be tight
It is close to be fitted on baffle and left side wall surface, anti-locking apparatus gas leakage.
Further, the temperature control by the temperature control medium in channel be ethylene glycol, alcohol or silicone oil.
Compared with prior art, present invention has an advantage that
Apparatus of the present invention are simple, at low cost convenient for operation, and the pattern and dynamic that can directly observe gas hydrate particle become
Change.
Since the present invention can directly measure the adhesion strength between gas hydrate particle under high pressure, compared to conventional atmospheric
The measurement of the CP THE hydrate particle adhesion strength of lower formation, conclusion have more reliability.
The present invention can measure the adhesion strength of compressed gas hydrate particle, utilize the life of statistical calculations hydrate particle
Long rate and nucleation time can think poorly of the performance of Dosage Hydrate Inhibitors.
Detailed description of the invention
Fig. 1 is the sectional view of the high pressure resistant microscopic observation thermostatic platform provided by the invention with cantilever operation.
All parts are as follows in figure, and: 1- can operate cantilever, the dismountable left side wall surface of 2- temperature sensor, 3-, 4- baffle,
Right side wall surface, the 9- inlet channel, 10- cantilever mounted that 5- flexible material, 6- visualization window, 7- fin, 8- are fixed, 11- pressure
Force snesor, 12- temperature control medium channel.
The detachable left side wall surface structure diagram of Fig. 2.
Fig. 3 hydrate particle " contact-offset-movement-separation " image.
Specific embodiment
The present invention will be further specifically described in detail with reference to specific embodiments
As depicted in figs. 1 and 2, a kind of high pressure resistant microscopic observation thermostatic platform with cantilever operation, including dismountable left side wall surface
3, visual windows 6, fin 7, fixed right side wall surface 8, fixed front-rear side walls, fixation top wall surface and temperature control medium channel
12；The top wall surface of dismountable left side wall surface 3 and fixed front-rear side walls, fixation forms a closed space, institute
The cold bench for being provided with a recess below space is stated, is provided with fin 7 on the wall surface of the recess；On the top wall surface of the fixation
Offer visual windows 6；Fixed baffle 4 is installed on dismountable left side wall surface 3；Dismountable left side wall surface
Hole slot is offered on 3, cantilever 1 can be operated by running through to have in the hole slot, and the cantilever 1 that operates prolongs through fixed baffle 4
It extends in the closed space, the flexible material 5 is covered on baffle 4 and left wall 3, on dismountable left side wall surface 3
Equipped with temperature sensor 2；The right side wall surface 8 of the fixation is equipped with cantilever mounted 10, inlet channel 9 and pressure sensor 11；
It is equipped on the inside of cold bench for the equally distributed fin 7 of augmentation of heat transfer.Temperature control medium channel 12, institute are surrounded with outside the cold bench
It states temperature control medium channel 12 and is externally connected with pipeline；The temperature control is a ring structure by channel 12.The material of the cold bench
Selected from stainless steel.1 end of cantilever that operates inserts glass fibre, and connection type is insertion cantilevered distal end.Above cold bench
A hole slot is provided on the wall surface of left side, the movable operation cantilever with baffle 4 passes through hole slot, which is placed in cold bench left side wall
Face, and fitted closely with it, which moves left and right along duct.The flexible material 5 is rubber membrane, polyethylene film or silica gel
Film.The temperature control is ethylene glycol, alcohol or silicone oil by the temperature control medium in channel.
Embodiment 1
1, it will can operate cantilever 1 to be inserted into the hole slot of dismountable left side wall surface 3, with microsyringe by a droplet (diameter
300 μm -500 μm) deionized water is injected on the end of two cantilever glass fibres.
2, the gap between cantilever baffle 4 and dismountable left side wall surface 3 is sealed with flexible material 5, it will be dismountable left
Side wall surface 3 is mounted in cold bench.It will can operate cantilever 1 to be inserted into the hole slot of dismountable left side wall surface 3, and use flexible material
Gap between 5 sealing cantilever baffles 4 and dismountable left side wall surface 3, dismountable left side wall surface 3 is mounted in cold bench
Face.
3, it is passed through the CH of 6MPa4,It opens temperature and pressure sensor and temperature setting is maintained one hour to 30 DEG C to eliminate note
Recall effect, opens the growth of camera shooting and record hydrate particle.
4,2 DEG C of temperature are reduced the temperature to needed for experiment by certain rate, and records temperature fall time t1,Maintain this temperature
Occur hydrate nucleus above to water droplet, records time t at this time2And record hydrate growth process, nucleation time t=t1- t2。
5, when drop is fully converted to hydrate particle record time t at this time3(solid spherical solid particle, surface topography
It is not growth terminal in variation with gloss), the hydrate growth time is T=t3-t2, hydrate particle growth rate be V=
πD3/ 6T, wherein D be hydrate particle diameter, generally 400 μm -700 μm.
6, it repeats aforesaid operations 20 times, with statistical method calculated hydration object nucleation time and growth rate.
Embodiment 2
1, one droplet (300 μm -500 μm of diameter) concentration 0.5wt% anti polymerizer polyvinyl alcohol (PVA) is injected with microsyringe
Onto the end of two cantilever glass fibres.
2, it will can operate cantilever 1 to be inserted into the hole slot of dismountable left side wall surface 3, and be kept off with flexible material sealing cantilever
Gap between plate and dismountable left side wall surface 3, left side wall surface is mounted on above cold bench.
3, cold bench temperature is reduced to -5 DEG C, is passed through the 74.3%CH of 5MPa4+25.7%C2H6。
4, once having observed hydrate nucleus growth, it is warming up to 1 DEG C, anneal 15h.
5, the static 10s of hydrate particle a and b is kept, allows hydrate particle center to reach balance (such as Fig. 3 A), movement can grasp
Make cantilever 1, two particles made to contact with each other, and give certain pressure and keep 10s(such as Fig. 3 B), then slow mobile particle a,
Due to the presence of adhesion strength between particle, two particles mobile concurrently raw adherency can deviate (such as Fig. 3 C) under adhesion strength effect, due to
Glass fibre elastic reaction, particle b can be returned to original equilibrium position (such as Fig. 3 D).
6, it repeats aforesaid operations 40 times, with microscope photographing and record hydrate particle adherency-separation process.
7, according to the adhesion strength between Hooke's law measuring and calculating hydrate particle.
8, when the adhesion strength being calculated is less than standard value 40mN/m(researcher under the same conditions without being added low dose
Measure the value of the hydrate particle adhesion strength of hydrate inhibitor test) when, illustrate that the anti polymerizer can reduce hydrate particle
Adhesion strength, value is smaller, illustrates that the viscosity reducing effect of the low dosage hydrate inhibitor is better.
Example described above is only examples made by the present invention to clearly illustrate, any to be familiar with the common of the art
Technical staff, can obviously make other various forms of variations on the basis of the above description or variation each falls within this hair
In bright protection scope.
Claims (7)
1. a kind of high pressure resistant microscopic observation thermostatic platform with cantilever operation, which is characterized in that including dismountable left side wall surface
(3), visual windows (6), fin (7), fixed right side wall surface (8), fixed front-rear side walls, fixation top wall surface and temperature control
Medium channel (12)；The top wall surface composition one of dismountable left side wall surface (3) and fixed front-rear side walls, fixation is close
The space closed, the space lower section are provided with the cold bench of a recess, are provided with fin (7) on the wall surface of the recess；It is described solid
Visual windows (6) are offered on fixed top wall surface；Fixed baffle (4) are installed on dismountable left side wall surface (3)；
Hole slot is offered on dismountable left side wall surface (3), running through to have in the hole slot can operate cantilever (1), described to operate
Cantilever (1) extends in the closed space through fixed baffle (4), and the flexible material (5) is covered in baffle (4)
On left wall (3), dismountable left side wall surface (3) is equipped with temperature sensor (2)；The right side wall surface (8) of the fixation is pacified
Equipped with cantilever mounted (10), inlet channel (9) and pressure sensor (11)；It is equipped on the inside of cold bench and is uniformly distributed for augmentation of heat transfer
Fin (7).
2. a kind of high pressure resistant microscopic observation thermostatic platform with cantilever operation according to claim 1, which is characterized in that described
It is surrounded with temperature control medium channel (12) outside cold bench, the temperature control medium channel (12) is externally connected with pipeline；The temperature control is cut
It is a ring structure to channel (12).
3. a kind of high pressure resistant microscopic observation thermostatic platform with cantilever operation according to claim 1, which is characterized in that described
The material of cold bench is selected from stainless steel.
4. a kind of high pressure resistant microscopic observation thermostatic platform with cantilever operation according to claim 1, which is characterized in that described
Cantilever (1) end can be operated and insert glass fibre, connection type is insertion cantilevered distal end.
5. a kind of high pressure resistant microscopic observation thermostatic platform with cantilever operation according to claim 1, which is characterized in that cold bench
A hole slot is provided on upper left wall surface, the movable operation cantilever with baffle (4) passes through hole slot, which is placed in cold
Wall surface on the left of platform, and fitted closely with it, which moves left and right along duct.
6. a kind of high pressure resistant microscopic observation thermostatic platform with cantilever operation according to claim 1, which is characterized in that described
Flexible material (5) is rubber membrane, polyethylene film or pellosil.
7. a kind of high pressure resistant microscopic observation thermostatic platform with cantilever operation according to claim 2, which is characterized in that described
Temperature control is ethylene glycol, alcohol or silicone oil by the temperature control medium in channel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910071095.9A CN109883946B (en) | 2019-01-25 | 2019-01-25 | High-pressure-resistant microscopic observation constant-temperature table with cantilever operation |
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| CN201910071095.9A CN109883946B (en) | 2019-01-25 | 2019-01-25 | High-pressure-resistant microscopic observation constant-temperature table with cantilever operation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112782074A (en) * | 2021-01-28 | 2021-05-11 | 北京大学 | Device for evaluating micro-effect of hydrate inhibitor and using method thereof |
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| JPH10206312A (en) * | 1997-01-27 | 1998-08-07 | Olympus Optical Co Ltd | Micro body adhesion force measuring device |
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| JPH10206312A (en) * | 1997-01-27 | 1998-08-07 | Olympus Optical Co Ltd | Micro body adhesion force measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112782074A (en) * | 2021-01-28 | 2021-05-11 | 北京大学 | Device for evaluating micro-effect of hydrate inhibitor and using method thereof |
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