CN107449860A - A kind of rotary high temp fused salt corrosion system for simulating feature - Google Patents
A kind of rotary high temp fused salt corrosion system for simulating feature Download PDFInfo
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- CN107449860A CN107449860A CN201710625704.1A CN201710625704A CN107449860A CN 107449860 A CN107449860 A CN 107449860A CN 201710625704 A CN201710625704 A CN 201710625704A CN 107449860 A CN107449860 A CN 107449860A
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Abstract
The invention discloses a kind of rotary high temp fused salt corrosion system for simulating feature, belong to the heat storage medium testing equipment field of light collection solar generating, including fused salt tank, agitating device, motor and the motor lowering or hoisting gear lifted for controlled motor, electric heater unit is additionally provided with fused salt tank；Motor bottom is fixed in one end of agitating device, and the other end is stretched into fused salt tank, and agitating device can be by its lifting of motor driven and rotation, and agitating device, which is stretched on one end in fused salt tank, is placed with print to be tested.Utilize the rotary high temp fused salt corrosion system for simulating feature of the present invention, it can comprehensively, effectively reflect the corrosion condition to different materials coupon such as fused-salt medium, flow velocity, temperature, the system can be continuously run (2000h rises) for a long time in the condition of high temperature, so as to which more realistically simulation is live, the Corrosion results analysis for obtaining print to be tested is more convincing.
Description
Technical field
The invention belongs to the heat storage medium testing equipment field that light collection solar generates electricity, and in particular to a kind of rotary high
Temperature molten salt etching characteristic simulation system.
Background technology
The energy occupies very important status during social development, and with the continuous development of China's economy, the energy disappears
Consumption is also being continuously increased, concentration type solar generate electricity (CSP) because its be easily integrated and thermal energy storage system (TES) can
Row and high efficiency make it that CSP business is more more attractive than other regenerative resources.In CSP heat storage mediums, fuse salt
Because its thermal conductivity factor is big, heat endurance and chemical stability are good, mass transfer speed is fast etc., advantage passes through frequently as heat transfer mixture
Fluid (HTF) and conduct thermal energy storage (TES) medium.Foreign countries have made intensive studies to mixed nitrate, it was demonstrated that 60%NaNO3
And 40%KNO3The compound Molten Binary Salts of composition are especially suitable for the use that the high warm of concentrating solar generates electricity.
For CSP power plant and fuse salt, the problem of corrosion behavior of material is very important, also there is phase both at home and abroad for this
Close scholar fused salt corrosion problem is deployed to study.1985, Slusser et al. was just to nitrate and nitrous acid in CSP systems
Salt is researched and analysed to the corrosion behavior of Nickel-Based Steel.There is scholar to carry out stainless steel and other steel alloys again afterwards
Experimental study.
In terms of experimental provision, static experiment high-temperature molten salt apparatus system is more, but static experiment is poor with actual conditions
Not larger, the coupling of multiple physical field is difficult to embody.In mode of operation, prior art typically directly places metal style
Or rely on crucible bottom and carry out high temperature corrosion experiment.And often style corrosion is very uneven for such experimental result, with
The position serious corrosion of crucible wall contact, and contacted just because of it and make it that sidewall of crucible is dry in face of the generation of metal style
Disturb, so as to which Corrosion results can not really reflect corrosion condition of the corrosive medium to metal style.It is rotten in existing dynamic fused salt
Lose in system and device, there is fused salt heat-accumulator tank and pipe-line system, fused salt flows and circulated in the entire system in the duct, easily solidifying
Tie and then block pipeline, need to add heat-preservation cotton in addition, also require heat pump higher.
The content of the invention
The defects of in order to overcome above-mentioned prior art to exist, it is an object of the invention to provide a kind of rotary high temp fused salt
Etching characteristic simulation system, the simulation system is reasonable in design, simple to operate, and test result is comprehensively effective.
The present invention is to be achieved through the following technical solutions：
A kind of rotary high temp fused salt corrosion system for simulating feature disclosed by the invention, including fused salt tank, agitating device, electricity
Machine and the motor lowering or hoisting gear for controlled motor lifting, are additionally provided with electric heater unit in fused salt tank；One end of agitating device
Motor bottom is fixed on, the other end is stretched into fused salt tank, and motor can drive agitating device to lift and rotate, and agitating device stretches into
Print to be tested is placed with one end in fused salt tank.
Preferably, if motor lowering or hoisting gear includes motor base disk, top fixed mount, top rotatable disc, rotating shaft and the Heavenly Stems and Earthly Branches
Frame, one end of support are removably arranged on the fixed mount of top, and the other end is fixedly installed on fused salt tank roof；Rotating shaft passes through
The axle center of top fixed mount and top rotatable disc is led directly to inside fused salt tank, and top rotatable disc is movably connected in above the fixed mount of top；
Motor is arranged in rotating shaft, motor is prolonged rotating shaft by rotating top rotatable disc and is slided up and down；Motor base disk is set
Fused salt tank top open part is placed in, motor is sticked in when being down to lowermost end on motor base disk.
Preferably, agitating device includes agitating shaft, and agitating shaft upper end is connected with motor bottom, and lower end is stretched into fused salt tank,
And some stirring rod are provided with lower end, stirring rod is provided with some prints to be tested.
Preferably, print to be tested is T-type structure, is provided with stirring rod multiple for inserting the print to be tested
Jack.
Preferably, stirring rod is 4, and 4 stirring rod are arranged in a crossed manner.
Preferably, in addition to a thermocouple sheath being arranged in fused salt tank, opened in the thermocouple sheath bottom
Provided with some circular holes corresponding with jack position in stirring rod, it is equipped with circular hole for measuring print temperature to be tested in real time
Thermocouple wire.
Preferably, thermocouple sheath is Z-type sleeve pipe.
Preferably, electric heater unit includes some heating coils and resistance being arranged in fused salt tank tank base and side wall
The pot temperature of fused salt tank can be risen to 550 DEG C by silk, electric heater unit.
Preferably, the temperature control device for monitoring temperature is additionally provided with fused salt tank.
Compared with prior art, the present invention has technique effect beneficial below：
Rotary high temp fused salt corrosion system for simulating feature disclosed by the invention, including it is internal molten provided with electric heater unit
Salt cellar, in addition to motor and be capable of controlled motor lifting motor lowering or hoisting gear, motor bottom be additionally provided with can extend into it is molten
Agitating device inside salt cellar, print to be tested are both placed on agitating device.When carrying out high temperature corrosion experiment, pass through motor
Rotate and drive agitating device rotation, and the height adjustable of motor, so that the depth that agitating device is stretched into fused salt tank is adjustable,
The electric heater unit inside fused salt tank can provide different temperature changes simultaneously, make print to be tested static or rotation is immersed
Different testing requirements is completed in fused-salt medium., can using the rotary high temp fused salt corrosion system for simulating feature of the present invention
Comprehensively, the corrosion condition to different materials coupon such as fused-salt medium, flow velocity, temperature is effectively reflected, the system can be in high temperature
State for extended periods continuously runs (2000h rises), so as to which more realistically simulation scene, the Corrosion results for obtaining print to be tested are analyzed
It is more convincing.
Further, motor and fused salt tank contact position (i.e. fused salt tank top open part) provided with motor base disk and
Bearing, it can be sticked in when motor minimizes position on the motor base disk, motor is reduced eccentric shifting straight up and down
Dynamic error, so as to which agitating device will not be made to encounter tube wall, and then makes experimental system safer.
Further, motor lowering or hoisting gear includes top fixed mount, top rotatable disc, rotating shaft and some supports, and the one of support
End is dismountable to be arranged on the fixed mount of top, and the other end is fixedly installed on fused salt tank roof；Motor is arranged in rotating shaft, is led to
Cross rotation top rotatable disc and motor is prolonged rotating shaft and slide up and down, complete lifting.
Further, multiple jacks for being used to insert the print to be tested, the shape of the jack are provided with stirring rod
It is adjusted according to the size of print to be tested, ensures not falling out in print insertion jack to be tested, positioned at diverse location
Jack has identical angular speed and has different linear velocities, it is hereby achieved that multiple fluid stable speed under same operating.
Further, stirring rod is 4, and 4 stirring rod are arranged in a crossed manner, can plug different materials in 4 stirring rod
The print to be tested of material, the corrosion experiment of different materials under identical conditions can be carried out simultaneously.Meanwhile the sample to be tested in stirring rod
Piece can at any time, any hanging position be removed or placed into, to meet different experiment demands.
Further, electric heater unit includes being arranged on multiple thermocouple sheath holes inside fused salt tank, in thermocouple set
Thermocouple sheath is provided with pore, for measuring same level diverse location in fused salt tank, and is melted at different height
Melt the temperature of salt.
Further, temperature control device is additionally provided with fused salt tank, monitors temperature in real time, keeping temperature is constant.
Brief description of the drawings
Fig. 1 is rotary high temp fused salt corrosion system for simulating feature structural representation disclosed by the invention；
Fig. 2 is rotary high temp fused salt corrosion system for simulating feature structure sectional view disclosed by the invention；
Fig. 3 is the thermocouple sheath structural representation of rotary high temp fused salt corrosion system for simulating feature disclosed by the invention
Figure.
Wherein, 1 is fused salt tank；2 be agitating device；3 be motor base disk；4 be motor；5 be top fixed mount；6 are
Agitating shaft；7 be temperature-measuring duct；8 be print to be tested；9 be stirring rod；10 be top rotatable disc；11 be rotating shaft.
Embodiment
With reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
Referring to Fig. 1, a kind of rotary high temp fused salt corrosion system for simulating feature disclosed by the invention, including fused salt tank 1, stir
Device 2, motor 4 and the motor lowering or hoisting gear lifted for controlled motor 4 are mixed, electric heater unit is additionally provided with fused salt tank 1；Stir
The bottom of motor 4 is fixed in the one end for mixing device 2, and the other end is stretched into fused salt tank 1, and agitating device 2 can drive it by motor 4
Lift and rotate, print 8 to be tested is placed with one end that agitating device 2 is stretched into fused salt tank 1.During test, the tank body of fused salt tank 1
Interior filled high-temperature heat storage medium fuse salt, fuse salt composition is 60%NaNO3And 40%KNO3；Motor 4 rotates, to be tested
Print 8 corrodes in fused salt tank 1.
If motor lowering or hoisting gear includes motor base disk 3, top fixed mount 5, top rotatable disc 10, rotating shaft 11 and the Heavenly Stems and Earthly Branches
Frame, one end of support are removably arranged on the fixed mount 5 of top, and the other end is fixedly installed on the roof of fused salt tank 1；Rotating shaft 11
Led directly to through the axle center of top fixed mount 5 and top rotatable disc 10 inside fused salt tank 1, it is fixed that top rotatable disc 10 is movably connected in top
The top of frame 5；Motor 4 is arranged in rotating shaft 11, motor 4 is prolonged rotating shaft 11 by rotating top rotatable disc 10 and is slided up and down；Motor bottom
Seat disk 3 is arranged at the top open part of fused salt tank 1, and the base of motor 4 is sticked on motor base disk 3 when being down to lowermost end.
Referring to Fig. 2, agitating device 2 includes agitating shaft 6, and the upper end of agitating shaft 6 is connected with the bottom of motor 4, and fused salt is stretched into lower end
In tank 1, and some stirring rod 9 are provided with lower end, stirring rod 9 is provided with some prints 8 to be tested.
Preferably, print 8 to be tested is T-type structure, is provided with stirring rod 9 multiple for inserting the print to be tested
8 jack.The shape of the jack is adjusted according to the size of print to be tested, and ensureing will not in print insertion jack to be tested
Drop, there is identical angular speed positioned at the jack of diverse location and have different linear velocities, it is hereby achieved that same operating
Under multiple fluid stable speed.Stirring rod 9 is stable under the firm power of motor 4 at the uniform velocity to be rotated, and can be obtained under same angular speed
The corrosion condition of the print to be tested 8 of different linear velocities.
Preferably, stirring rod 9 is 4, and 4 stirring rod 9 are arranged in a crossed manner.Different materials can be plugged in 4 stirring rod
Print to be tested, the corrosion experiments of different materials under identical conditions can be carried out simultaneously.Meanwhile the print to be tested in stirring rod
Can at any time, any hanging position be removed or placed into, to meet different experiment demands.
Preferably, electric heater unit includes some heating coils and electricity being arranged in the tank base of fused salt tank 1 and side wall
Silk is hindered, the pot temperature of fused salt tank 1 can be risen to 550 DEG C by electric heater unit.
Referring to Fig. 3, a thermocouple sheath 7 is additionally provided with the tank interior of fused salt tank 1, and the bottom side of thermocouple sheath 7 with
The corresponding position of the jack of stirring rod 9 sets 4 small sircle holes.By 4 thermocouple wires in the hole of thermocouple sheath, and successively
Stretched out in 4 small sircle holes of the bottom side of thermocouple sheath 7, so as to equably measure the real-time temperature of each print to be tested 8
Degree.The temperature control device for monitoring temperature is additionally provided with fused salt tank 1.
The rotary high temp fused salt corrosion system for simulating feature (by taking 4 stirring rod 9 as an example) of the present invention, when in use, examination
It is as follows to test process：
1st, commissioning test.It is each to check that motor 4 frequency control, power supply are set, electric heater unit and constant temperature automatically control etc.
Individual subsystem whether normal work, ground wire whether connect, whether fused salt tank periphery in a safe condition, rise motor 4 suspend
In aerial, 16 prints 8 to be tested are suspended in 4 stirring rod 9 respectively.
2nd, filler, heating.(60%NaNO will be matched3And 40%KNO3) good fuse salt slowly carefully pours into fused salt tank 1
In, packed height is about the half of fused salt tank body, opens electric heater unit heating, when temperature rises to 290 DEG C, melting afterwards
Salt now, adds the solid-state fuse salt of about a quarter into liquid state.So circulation is until fused salt amount meets operating condition of test
When stop.Temperature of molten salt rises to operating mode needed for experiment simultaneously.
3rd, tested.Rotary top rotating disk 10, correct position is dropped to, start motor 4, driven agitating shaft 6 to rotate, treat
Test sample 8 corrodes in the fuse salt of flowing, after certain operating mode time is reached, closes motor 4, takes out thermocouple sheath 7,
And record data.Then print 8 to be tested is taken out.Each operating mode time is about 10 days, to ensure that motor does not stop during this period
Operating, temperature keep constant temperature.
4th, test specimen dress takes.Installing test specimen first will be before experiment starts.One group of operating mode is often finished, closes motor 4, rotation
Top rotatable disc 10 makes motor 4 etc. slide up to correct position, now, takes out print to be tested with experiment hook, afterwards will
Motor 4 resets, and waits after test sample is cooled to room temperature, acetone soln cleaning be adhered to fused salt on print to be tested and
Loose corrosive deposit.After cleaning up, dry in an oven, after cooling with electronic balance weighing and record corrosion after weight.
5th, data acquisition-and-recording.Because experimental period is longer, a period of time progress data acquisition need to be only chosen every time.Weight
Multiple above-mentioned steps, complete experiment.
In summary, rotary high temp fused salt corrosion system for simulating feature disclosed by the invention, including fused salt tank, electrical heating
Device, motor lowering or hoisting gear and agitating device, motor can move straight up and down, and eccentric error is smaller.Connect agitating shaft
The T-shaped print to be tested that can flexibly pick and place is inserted with stirring rod, print straight cutting to be tested, which enters, not to be fallen out in jack and will not shake
It is dynamic.When carrying out high temperature corrosion experiment, static or rotation print to be tested is immersed in 60%NaNO3And 40%KNO3Fuse salt is situated between
In matter.Using the present invention rotary high temp fused salt corrosion system for simulating feature, can comprehensively, effectively reflect fused-salt medium, flow velocity,
The corrosion condition to different materials coupon such as temperature.
Claims (9)
1. a kind of rotary high temp fused salt corrosion system for simulating feature, it is characterised in that including fused salt tank (1), agitating device
(2), motor (4) and the motor lowering or hoisting gear for controlled motor (4) lifting, fused salt tank (1) is interior to be additionally provided with electric heater unit；
Motor (4) bottom is fixed in one end of agitating device (2), and the other end is stretched into fused salt tank (1), and motor (4) can drive stirring
Device (2) is lifted and rotated, and print to be tested (8) is placed with one end that agitating device (2) is stretched into fused salt tank (1).
2. rotary high temp fused salt corrosion system for simulating feature according to claim 1, it is characterised in that motor lifting dress
Put including motor base disk (3), top fixed mount (5), top rotatable disc (10), rotating shaft (11) and some supports, the one of support
End is dismountable to be arranged on top fixed mount (5), and the other end is fixedly installed on fused salt tank (1) roof；Rotating shaft (11) passes through
The axle center of top fixed mount (5) and top rotatable disc (10) leads directly to fused salt tank (1) inside, and top rotatable disc (10) is movably connected in top
Above fixed mount (5)；
Motor (4) is arranged in rotating shaft (11), motor (4) is prolonged rotating shaft (11) by rotating top rotatable disc (10) and is slided up and down；
Motor base disk (3) is arranged at fused salt tank (1) top open part, and motor (4) is sticked in motor base circle when being down to lowermost end
On disk (3).
3. rotary high temp fused salt corrosion system for simulating feature according to claim 1, it is characterised in that agitating device
(2) agitating shaft (6) is included, agitating shaft (6) upper end is connected with motor (4) bottom, and lower end is stretched into fused salt tank (1), and in lower end
Provided with some stirring rod (9), stirring rod (9) is provided with some prints (8) to be tested.
4. rotary high temp fused salt corrosion system for simulating feature according to claim 3, it is characterised in that print to be tested
(8) it is T-type structure, multiple jacks for being used to insert the print to be tested (8) is provided with stirring rod (9).
5. the rotary high temp fused salt corrosion system for simulating feature according to claim 3 or 4, it is characterised in that stirring rod
(9) it is 4,4 stirring rod (9) are arranged in a crossed manner.
6. rotary high temp fused salt corrosion system for simulating feature according to claim 4, it is characterised in that also include setting
A thermocouple sheath (7) in fused salt tank (1) tank body, some and stirring rod is offered in thermocouple sheath (7) bottom
(9) circular hole corresponding to the jack position on, the thermocouple for measuring print to be tested (8) temperature in real time is equipped with circular hole
Silk.
7. rotary high temp fused salt corrosion system for simulating feature according to claim 6, it is characterised in that thermocouple sheath
(7) it is Z-type sleeve pipe.
8. rotary high temp fused salt corrosion system for simulating feature according to claim 1, it is characterised in that electric heater unit
Including some heating coils and resistance wire being arranged in fused salt tank (1) tank base and side wall, electric heater unit will can melt
The pot temperature of salt cellar (1) rises to 550 DEG C.
9. rotary high temp fused salt corrosion system for simulating feature according to claim 1, it is characterised in that fused salt tank (1)
Inside it is additionally provided with the temperature control device for monitoring temperature.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710625704.1A CN107449860A (en) | 2017-07-27 | 2017-07-27 | A kind of rotary high temp fused salt corrosion system for simulating feature |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710625704.1A CN107449860A (en) | 2017-07-27 | 2017-07-27 | A kind of rotary high temp fused salt corrosion system for simulating feature |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109238954A (en) * | 2018-10-31 | 2019-01-18 | 中国特种设备检测研究院 | Simulate fused salt dynamic corrosion test device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20171208 |