CN105070335B - Measure the device of device wall dust deposit characteristic in HTHP dust-contained airflow - Google Patents
Measure the device of device wall dust deposit characteristic in HTHP dust-contained airflow Download PDFInfo
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- CN105070335B CN105070335B CN201510522759.0A CN201510522759A CN105070335B CN 105070335 B CN105070335 B CN 105070335B CN 201510522759 A CN201510522759 A CN 201510522759A CN 105070335 B CN105070335 B CN 105070335B
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- contained airflow
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- 239000000428 dust Substances 0.000 title claims abstract description 69
- 238000012360 testing method Methods 0.000 claims abstract description 37
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 18
- 239000010439 graphite Substances 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 43
- 238000005259 measurement Methods 0.000 claims description 14
- 238000002474 experimental method Methods 0.000 claims description 8
- 239000001307 helium Substances 0.000 claims description 7
- 229910052734 helium Inorganic materials 0.000 claims description 7
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000003570 air Substances 0.000 claims 1
- 230000008021 deposition Effects 0.000 description 5
- 239000000446 fuel Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Sampling And Sample Adjustment (AREA)
Abstract
The invention provides a kind of device for measuring device wall dust deposit characteristic in HTHP dust-contained airflow.The device includes high-pressure air source system, heating system, main pipe system, dust injected system, test section system and dedusting exhaust system, and whole device is open system structure.Gas is injected into before main pipeline by high-pressure air source system, heated system heat temperature raising, high temperature and high pressure environment is formed in main pipeline, graphite dust is injected into main pipe system by dust injected system, being formed with the air-flow in main pipeline has certain density dust-contained airflow, and gas pressure and flow velocity can be realized by constant pressure regulating valve and constant flow control valve in main pipeline.The present apparatus can measure the dust deposit situation that test device wall in dust-contained airflow is under HTHP.
Description
Technical field
The present invention relates to nuclear reactor engineering field, particularly a kind of measurement device wall in HTHP dust-contained airflow
The device of dust deposit characteristic.
Background technology
Compared with other nuclear power systems, MHTR has the characteristics that security is good, generating efficiency is high, by
Various countries' common concern, and very high temperature gas cooled reactor is one of candidate's heap-type of forth generation Advanced Nuclear Energy Systems, it is considered to be most having can
The advanced heap-type that can implement in the near future.In HTGR, reactor core removes a small amount of fuel, controlled outside material, substantially
On be all graphite type material, and the distinctive fuel sphere endless form of pebble bed reactor so that fuel sphere in motion process its own
And fretting wear will inevitably occur for other graphite components and pipeline, graphite dust is produced.Caused graphite dust
Primary Ioops working medium helium will be followed to move, spread and deposit in primary Ioops.The motor behavior of graphite dust is for high temperature gas-cooled
The operation of heap has more important meaning.When being run under reactor nominal situation, graphite dust particle is with cooling gas helium
Flow in reactor-loop, and deposited on primary Ioops surface and flow dead, the maintenance and maintenance to equipment are brought not
Just；Graphite dust can also deposit in evaporator heat exchange pipe surface, influence its heat exchange efficiency etc.；Graphite dust particle is loose porous
Structure, the active fission fragment of the adsorbable band in surface.
Therefore, the deposition characteristics for understanding graphite dust in each apparatus surface of high temperature nuclear reactor primary Ioops are transported for the safety of reactor
Row and analysis important in inhibiting.
The content of the invention
At present, known little about it for the data of the dust deposit situation on each device element surface in high temperature nuclear reactor.Have other
The data of the wall dust deposit characteristic in field are and the HTGR based on the data under air atmosphere, normal temperature and pressure mostly
Cooling agent be HTHP helium.Thus, to need to design suitable scheme realization to high in HTGR primary Ioops
The dust deposit characteristic of each device surface measures in the helium working medium of the carrying finite concentration graphite dust of warm high pressure.
Present invention offer one kind can study device wall dust using gas with various working medium under high temperature and high pressure condition and sink
The device of product characteristic.
A kind of test device of device wall dust deposit characteristic in HTHP dust-contained airflow in high temperature nuclear reactor is devised, is had
Body structure sees appendix middle Fig. 1 and 2.
The device is mainly by high-pressure air source system, heating system, main line system, dust injected system, test section system
And dedusting exhaust system is formed.High-pressure air source system includes kinds of gas sources, and can be substituted for different sources of the gas, carries out not
With the experiment under gas working medium.Gas is injected into before main pipeline, heated system heat temperature raising so that main pipeline environment is energy
Enough simulate the HTHP of HTGR primary Ioops environment.For less radiating, main pipeline pipeline periphery parcel insulation material
Material.
In order to reduce influence of the upstream line wall deposition dust that may be present to downstream, the present apparatus is designed as open type system
System.The flow of needs is set by the constant flow valve in main pipeline downstream, reality is set by the constant pressure valve of main pipeline upstream
The pressure value of needs is tested, it is hereby achieved that different gas pressures and air velocity.By dust injected system by graphite powder
Dirt is injected into the air-flow in main pipe system, so as to be formed with certain density dust-contained airflow.The present apparatus can analyze examination
The change that device tests front and rear surfaces graphite dust deposition characteristics in main pipeline is tested, such as the Dust Capacity of deposition, dust thickness, powder
Dirt particle characteristics, it can further analyze each device wall graphite dust deposition rule in prediction high temperature nuclear reactor.
Brief description of the drawings
Fig. 1 is the structural representation of the device of device wall dust deposit characteristic in present invention measurement high temperature nuclear reactor primary coolant circuit pipe
Figure.
Fig. 2 is the structural representation of test section system.
Wherein, 1- high-pressure air source systems；2- heating systems；3- main pipe systems；4- test section systems；5- dust injection system
System；6- dedusting exhaust systems；7- high-pressure air tank tanks；8- high pressure nitrogen tanks；9- high pressure helium gas tanks；10- heaters；11- constant pressures are adjusted
Save valve；12- pressure sensors；13- temperature sensors；14- power governors；15- temperature sensor devices；16- pressure sensors；
17- air velocity transducers；18- adpting flanges；19- test section bodies；20- test devices；21- gas cylinders；22- stop valves；23-
Dust container；24- stop valves；25- constant flow control valves；26- safety relief valves；27- filters；28- heat-insulation layers；29- coil pipes
Structure devices；30- pipeline configuration devices；31- blade construction devices.
Embodiment
Below in conjunction with the accompanying drawings, the embodiment of the present invention is described in further detail.Following examples are used to say
The bright present invention, but it is not limited to the scope of the present invention.
As shown in Figure 1, it is a kind of to measure in high temperature nuclear reactor device wall dust deposit characteristic in HTHP dust-contained airflow
Device, including high-pressure air source system 1, heating system 2, main pipe system 3, test section system 4, dust injected system 5, dedusting row
Place system 6, constant pressure regulating valve 11 and constant flow control valve 25；The high-pressure air source system 1 and the heating system 2 are gone here and there successively
One end of the main pipe system 3 is associated in, the dust injected system is located at the side of main pipe system 3, the dedusting discharge
System 6 is connected to the other end of the main pipe system 3, and the test section 4 is connected on the inside of the main pipe system 3；
Wherein, the high-pressure air source system 1 is used to provide gases at high pressure to the main pipe system 3；The heating system 2 is used for institute
The gas for stating high-pressure air source system offer is heated；The dust injected system 5 is used for the gas in the main pipe system 3
Body adds graphite dust；The gas that the dedusting exhaust system 6 is used for whole device is released outlet.
The high-pressure air source system 1 is used to provide high-pressure air source to the main pipe system 3；Just determine three kinds of gases, respectively
For air 7, nitrogen 8 and helium 9；High pressure tank can also be replaced by different sources of the gas.
Heating system 2 is used to heat the gas that the high-pressure air source system provides, itself and high-pressure air source system
Outlet pipe is connected, and the air-flow in pipeline is heated by heater 10；The power adjustable of the electric heater, i.e. air-flow
Temperature is adjustable, and the temperature 13 by detecting heater outlet gas feeds back to power governor 14 and is adjusted；The heating system
Constant pressure regulating valve 11 is provided with the export pipeline of system.So, before source of the gas is injected into main pipeline by high-pressure gas injection system, warp
Electric heater unit heats up, and can form high temperature and high pressure environment in main pipeline.
Main pipe system 3 includes gas piping, and constant pressure regulating valve 11 is connected in the gas piping upstream, and downstream connection is permanent
Flow control valve 25.By adjusting constant pressure regulating valve 11, the gas pressure required for experiment can be obtained, by adjusting constant flow
Regulating valve 25, the air velocity required for experiment can be obtained.In constant pressure regulating valve 11 and the common work of constant flow control valve 25
Under, it is hereby achieved that different gas pressures and air velocity.
Test section system 4 includes adpting flange 18, test section body 19, test device 20.Test device 20 is arranged on examination
The inside of section body 19 is tested, can be dismantled.Test section body 19 is connected by flange 18 with main pipeline pipeline, detachably.Before experiment,
Test device 20 is arranged on the inside of test section body 19, then is connected by flange 18 with main pipeline pipeline；After off-test, tear open
Adpting flange 18 is opened, unloads test section body 19, then therefrom pulls down test device 20, measures and analyze the wall of test device 20
Dust deposit situation.
Dust injected system 5 is made up of gas cylinder 21, dust container 23 and stop valve 22,24.Before experiment, first by stone
Toner dust is placed in dust container 23, opens stop valve 22 during experiment and stop valve 24, graphite dust will be in gas cylinders 21
Under the carrying of the high pressure draught of middle ejection, spray into main pipe system air-flow.It should be noted the high pressure gas in dust injected system
The pressure of bottle should be more than the pressure in main pipe system.
Dedusting exhaust system 6 is made up of stop valve 26 and dust filter unit 27.In off-test constantly, stop valve 26 will beat
Begin to rehearse the gas put in main pipeline, because gas is dusty gas in main pipeline, therefore sets dust filter unit 27 to discharge gas
Dust-filtering in body falls.
Test device 20 can be the model of the visual plant device in high temperature nuclear reactor in primary Ioops, as provided in accompanying drawing 2
Coil arrangement device 29, pipeline configuration device 30 and blower fan (or turbine) blade 31 etc..
To reduce the radiating of pipeline wall, heat-insulation layer 28 is provided with outside main pipe system 3 and test section 4.
In addition, be provided with pipeline between test section system 4 and dedusting exhaust system 6 the first temperature sensor 15,
First pressure sensor 16 and air velocity transducer 17, for measuring the temperature in main pipeline, pressure and flow velocity.Meanwhile adding
On the outlet pipe of hot systems 2, the upstream of stop valve 11 be additionally provided with second pressure sensor 12 and second temperature sensor 13.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and replacement can also be made, these improve and replaced
Also it should be regarded as protection scope of the present invention.
Claims (12)
- A kind of 1. device for measuring device wall dust deposit characteristic in HTHP dust-contained airflow, it is characterised in that：Including height Pressurized air source system (1), heating system (2), main pipe system (3), test section system (4), dust injected system (5), dedusting row Place system (6)；The high-pressure air source system (1) and the heating system (2) are sequentially connected in series the one of the main pipe system (3) End, the dust injected system (5) are connected to the main pipeline side, and the dedusting exhaust system (6) is connected to the supervisor The other end of road system (3), and the test section (4) is connected on the inside of the main pipe system (3)；Wherein, the high pressure Air supply system (1) is used to provide gases at high pressure to the main pipe system (3)；The heating system (2) is used for the high pressure The gas that air supply system provides is heated；The dust injected system (5) is used for the gas in the main pipe system (3) Add graphite dust；The gas that the dedusting exhaust system (6) is used for whole device is released outlet；The main pipe system (3) includes gas piping；The upstream of the gas piping is connected with constant pressure regulating valve (11), is used for Regulation obtains required gas pressure；The gas piping downstream connection has constant flow control valve (25), and institute is obtained for adjusting The gas flow rate needed.
- 2. according to described in claim 1 measurement HTHP dust-contained airflow in device wall dust deposit characteristic device, its It is characterised by：The high-pressure air source system (1) is made up of more than one high pressure tank (7) (8) (9).
- 3. according to described in claim 2 measurement HTHP dust-contained airflow in device wall dust deposit characteristic device, its It is characterised by：The high-pressure air source system (1) is made up of three high pressure tanks (7) (8) (9), be respectively filled with air, nitrogen, Helium.
- 4. according to described in claim 2 measurement HTHP dust-contained airflow in device wall dust deposit characteristic device, its It is characterised by：The high pressure tank is replaceable setting.
- 5. according to described in claim 1 measurement HTHP dust-contained airflow in device wall dust deposit characteristic device, its It is characterised by：The heating system (2) is connected with the outlet pipe of the high-pressure air source system (1), right by electric heater (10) Air-flow in pipeline is heated；The power adjustable of the electric heater simultaneously carries out feedback control, by detecting heater outlet The temperature (13) of gas feeds back to power governor (14) and is adjusted, adjustable so as to the temperature of air-flow.
- 6. according to described in claim 1 measurement HTHP dust-contained airflow in device wall dust deposit characteristic device, its It is characterised by：Stop valve (11) is provided with the export pipeline of the heating system.
- 7. the device of device wall dust deposit characteristic in measurement HTHP dust-contained airflow according to claim 1, its It is characterised by：The first temperature biography is provided with pipeline between the test section system (4) and the dedusting exhaust system (6) Sensor (18), first pressure sensor (19) and air velocity transducer (20).
- 8. the device of device wall dust deposit characteristic in measurement HTHP dust-contained airflow according to claim 1, its It is characterised by：The dust injected system (5) include gas cylinder (21), dust container (23) and the first stop valve (22), Second stop valve (24)；Graphite dust is contained in the dust container (23) before the test；Described first section is opened during experiment Only valve (22) and second stop valve (24), graphite dust are injected into main pipe system with the air-flow of gas cylinder (21) In.
- 9. the device of device wall dust deposit characteristic in measurement HTHP dust-contained airflow according to claim 1, its It is characterised by：The test section system (4) includes test device (20), adpting flange (18) and test section body (19)；Experiment Section system is connected by adpting flange with main pipeline pipeline；Test device for measurement is detachably positioned in the test section Inside body.
- 10. the device of device wall dust deposit characteristic in measurement HTHP dust-contained airflow according to claim 1, its It is characterised by：The dedusting exhaust system (6) includes stop valve (26) and dust filter unit (27)；As off-test or supervisor In road during gas superpressure, the stop valve (26) is opened and is exhausted, and the dust in air-flow is filtered by dust filter unit (27) Fall.
- 11. the device of device wall dust deposit characteristic in measurement HTHP dust-contained airflow according to claim 10, It is characterized in that：Second pressure sensor is additionally provided with the outlet pipe of the heating system, in the upstream of the stop valve And second temperature sensor (13) (12).
- 12. the device of device wall dust deposit characteristic in measurement HTHP dust-contained airflow according to claim 1, its It is characterised by：The main pipe system and the test section its exterior are provided with heat-insulation layer (28), to reduce pipeline wall Radiating.
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| CN201510522759.0A CN105070335B (en) | 2015-08-24 | 2015-08-24 | Measure the device of device wall dust deposit characteristic in HTHP dust-contained airflow |
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| CN201510522759.0A CN105070335B (en) | 2015-08-24 | 2015-08-24 | Measure the device of device wall dust deposit characteristic in HTHP dust-contained airflow |
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| CN105070335B true CN105070335B (en) | 2018-01-09 |
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| CN110473639B (en) * | 2018-11-28 | 2023-04-14 | 中国辐射防护研究院 | Device for researching dust deposition behavior |
| CN111678707A (en) * | 2020-07-23 | 2020-09-18 | 中国航发湖南动力机械研究所 | Dust deposition characteristic test system |
| RU2761866C1 (en) * | 2020-12-30 | 2021-12-13 | Акционерное Общество "Атомэнергопроект" | Method for monitoring system for passive heat removal from internal volume of protective shell and device for its implementation |
| CN112986066B (en) * | 2021-02-08 | 2022-03-25 | 清华大学 | Experimental device for be used for studying dust particle resuspension law |
| CN116434990A (en) * | 2023-04-21 | 2023-07-14 | 华能山东石岛湾核电有限公司 | Verification system and method for purging outside of high-temperature gas cooled reactor flow choker |
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| CN103310857B (en) * | 2013-05-20 | 2015-10-28 | 清华大学 | Analyze the device and method of graphite dust resuspension rule in high temperature nuclear reactor cut accident |
| CN103308275B (en) * | 2013-05-20 | 2016-01-13 | 清华大学 | The device of simulation high temperature nuclear reactor cut accident graphite dust discharge and discharge capacity method of testing |
| CN103278434B (en) * | 2013-05-20 | 2015-08-12 | 清华大学 | Measure the device and method of concentration of graphite dust in high temperature gas cooled reactor primary coolant circuit pipe |
| CN103854712B (en) * | 2014-02-26 | 2016-07-06 | 清华大学 | Measure graphite dust granule and play the apparatus and method of dirt |
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