CN108286799A - A kind of liquid metal sodium high power heating system and its adjusting method - Google Patents
A kind of liquid metal sodium high power heating system and its adjusting method Download PDFInfo
- Publication number
- CN108286799A CN108286799A CN201810037587.1A CN201810037587A CN108286799A CN 108286799 A CN108286799 A CN 108286799A CN 201810037587 A CN201810037587 A CN 201810037587A CN 108286799 A CN108286799 A CN 108286799A
- Authority
- CN
- China
- Prior art keywords
- heating
- power
- heater
- valve
- sodium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/18—Water-storage heaters
- F24H1/20—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes
- F24H1/201—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes using electric energy supply
- F24H1/202—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes using electric energy supply with resistances
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
- F24H1/142—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using electric energy supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
- F24H9/001—Guiding means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/12—Arrangements for connecting heaters to circulation pipes
- F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
- F24H9/133—Storage heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1818—Arrangement or mounting of electric heating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
- F24H9/2021—Storage heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
- F24H9/2028—Continuous-flow heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H2250/00—Electrical heat generating means
- F24H2250/02—Resistances
Abstract
A kind of liquid metal sodium high power heating system and its adjusting method, including multiple high-power heaters, each heater power are 4.2MW, are divided into multiple heating units.Each heating unit includes electric heater, inlet valve, outlet valve, by-passing valve.Each heating unit is connected in series with, the last one heating unit connects reheater, and reheater further adjusts sodium outlet temperature.Electric heating system introduces argon gas protection, has completely cut off reacting for air and other gases and Liquid Sodium, while the pressure stability of heater is maintained in the operations such as significantly removal of load, load down, load up.Entire heating system adjusts " three-step-march " scheme using on-off type, high power coarse adjustment, low-power fine tuning, and introduces automatic feedback adjusting so that the sodium outlet temperature of entire heating system can reach the requirement of experiment condition.Entire heating system economical and efficient, safe and reliable, operability is strong.
Description
Technical field
The present invention relates to liquid metal technical field of heating, and in particular to a kind of liquid metal sodium high power heating system and
Its adjusting method
Background technology
The circuit of sodium-cooled fast reactor generally use sodium-sodium-water is designed, and sodium-steam generator is secondary circuit and three circuits
Important pivot, the main water supply of heat that it generates reactor generates steam, to which pushing turbine does work.Steam hair simultaneously
Raw device still separates secondary circuit and the important barrier in three circuits, once heat transfer tracheal rupture will cause serious sodium-water reaction, sternly
Ghost image rings availability, economy and the reliability of nuclear power station operation.A large amount of literature survey is found, in sodium-cooled fast reactor steam generation
In terms of device research, several countries of relatively early development fast reactor have carried out a large amount of research work, in steam generator experiment, very
The multinational heat that surrogate response heap exports in the way of gas heating.Japanese SGTF (Steam Generator Test
Facility) rack power is 50MW, by 1/5 power designs of Manjusri's heap, using gas heating, and 390 DEG C of boiler inlet sodium temperature,
Export 540 DEG C of sodium temperature.India SGTF (Steam Generator Test Facility) rack power is 5.5MW, using combustion
Gas heats, and sodium is heated to 525 DEG C from 355 DEG C.U.S. SGTR (Steam Generator Test Rig) test-bed power
For 2MW, fired heater is equally used.Gas fired-boiler inlet and outlet sodium temperature respectively may be about 308 DEG C and 505 DEG C, flow 524t/h.
Dutch SCTF (Sodium Component Test Facility for testing of steam generator) testing stand
Frame power is 50MW, fired heater power 58MW, and sodium temperature rises to 650 DEG C from 343.5 DEG C, flow 1800m3/h.Flame adds
Hot mode is primarily present matching and the processing problems of boiler, while introducing boiler and increasing a large amount of do not know in operation and safety
Degree improves the level of empirical risk assessment, increases the probability that major accident occurs.
The steam generator research and development of conventional presurized water reactor domestic at present are heated using fuel oil or high-temperature steam, due to sodium medium
It is active to learn property, sodium leakage occurs in steam heater can form violent sodium-water reaction and cause hydrogen explosion, cause serious
Consequence.
According to existing experiment operating experience, there are three types of the Electric heatings of sodium working medium：Electric heating wire heats, heater strip winding
Fluid temperature (F.T.) is increased into declared working condition by radial heat conduction on container or pipeline, the single heating power of heater strip is smaller, container
Apparent solid volume it is limited, and radiation heat transfer can be carried out to environment while radial heat conduction, the heating temperature that fluid needs is high
Up to 505 DEG C, heater strip surface temperature higher, radiation heat transfer loss is larger, and heater strip heating is suitable for small-power low-temperature heat；Pipe
Interior Multi-stage heating, sodium fluid interchange in inner tube, fills magnesium oxide powder, plays the work of insulation and heat conduction between inner tube and outer tube
With outer tube electrified regulation, surface heat flux is larger, and equally existing radiation heat transfer with heater strip mode of heating loses larger shadow
It rings, the Multi-stage heating used additionally, due to bringing-up section causes the sodium in pipe to charge if the processing of bringing-up section goes wrong, then whole
A circuit it is possible that electric shock etc. safety accidents, simultaneously because entirely experiment heating power it is higher, the heating segment length needed
Degree is longer, brings larger flow resistance, entire mode of heating to be heated for series multistage, any one section of bringing-up section goes wrong all
It can influence the safety of entire bringing-up section.This kind of mode of heating is adjusted suitable for low power fineization；Heating rod heats, and heating rod is inserted
Enter and heat container, the heating environment of heating rod is high-temperature sodium medium, and radiation heat transfer loss is small.
Invention content
The purpose of the present invention is overcoming above-mentioned combustion gas or steam-heated disadvantage, a kind of liquid metal sodium high power is provided
Heating system and its adjusting method, the present invention is by reasonable Arrangement heating rod and chooses suitable heating and its regulative mode, full
The needs of the large scale equipments research and development test verification such as the existing sodium-cooled fast reactor steam generator of foot, heat exchanger, are provided instead of nuclear energy
Conventional energy resource is tested, and heater design is simple and practicable, and effective, safety and economy are higher.
In order to achieve the above object, the present invention adopts the following technical scheme that：
A kind of liquid metal sodium high power heating system, including multiple high-power heaters being sequentially connected in series, each
The power of high-power heater is 4.2MW；Low temperature sodium enters heating system, initially enters three-way interface, and threeway first outlet connects
The inlet valve 201 of the first high-power heater 1 is connect, threeway second outlet connects the first by-passing valve 401；First high-power heater
1 upper end connects first outlet valve 301, and 301 rear end pipeline of first outlet valve connect threeway with 401 rear end pipeline of the first by-passing valve
It crosses；By-passing valve and bypass line are mainly used for two class operating modes, when one is that the heating power needed for the sodium is relatively low, liquid metal sodium
Then without heater, to reduce flow resistance；Secondly being when heater heating goes wrong and heating system also needs to continue
When working online, liquid metal sodium is then overhauled without this heater, while to heater；The above first high power heating
Device 1, first entrance valve 201, first outlet valve 301 and the first by-passing valve 401 constitute the first heating unit；Second high power adds
Hot device 2, second entrance valve 202, second outlet valve 302 and the second by-passing valve 402 constitute the second heating unit, and so on,
Constitute multiple heating units, the structure all same of each heating unit；Each heating unit is in outer layer covers heater strip and guarantor
Wen Mian, when startup, make entire heating system temperature reach the solidification point of sodium or more, prevent pipeline jam accident caused by the solidification of sodium；Most
Reheater 6 is connected after the latter heating unit, to adjust sodium outlet temperature；Further include and each high-power heater and reheater
The PLC control cabinets 7 of 6 connections, and the control system 8 that is connect with PLC control cabinet 7.
First high-power heater 1 includes heating tank 101, and the heating rod 102 in 101 ectonexine of heating tank is arranged,
The cowling panel 103 of 102 bottom of heating rod is set in heating tank 101；101 lateral trepanning of the heating tank simplifies heating tank
Heating rod is arranged in 101, and 280 heating rods are housed on each container, and single heating rod power is 15kW；In view of heating rod
101 diameter avoids heating rod and heating rod in tip contact, and being arranged on heating container radial section of heating rod arranges 20
Root, heating rod tip edge distance are 36mm, and heating rod length is 700mm, are in the spacing of the axial every layer of heating rod of heater
220mm uses insert row to arrange between layers, mainly disturbs the flow regime of sodium to enhance heat exchange, while can reduce
Interlamellar spacing so that heating rod arrangement is compacter；14 layers of heating rod are arranged in the axial direction to meet experiment heating power requirements, are added
The a height of 3.1m of hot arc cylinder；To meet the pressure-bearing design of container, design pressure 1Mpa, heating wall of a container thickness is 20mm,
It heats container and increases the hemispherical that height is 0.5m up and down and cover, the total a height of 4.1m of heater；Heating container inlet and outlet are provided with
Temperature point and pressure-measuring-point, heating container head are provided with explosive valve 104 and argon gas inlet 105, and explosive valve 104 is main
Jumping and causing the accident for the sodium loop transient pressure in the case of circuit removal of load, load up, load down is prevented, argon gas mainly rises
To isolation can reactant effect, while the pressure in heater can also be maintained；First high-power heater, 1 bottom end is provided with whole
Flowing plate 103 plays the role of assignment of traffic and disturbance flow field.
The reheater 6 divides for Multi-stage heating pipe, and the structure of every grade of heating tube is all identical, leads between adjacent two-step heating pipe
Bend pipe connection is crossed, the inner sleeve 601 of every grade of heating tube is used as fluid channel, and outer tube 602 is used as heating tube, in outer tube 602
Both ends directly add small voltage high current to be heated, and the insulating layer 603 between inner sleeve 601 and outer tube 602 is by filling oxygen
Change magnesium insulation, 602 both ends wall surface arrangement thermocouple of outer tube is to monitor reheater wall portion temperature, reheater inlet and outlet arrangement heat
Galvanic couple monitors metallic sodium temperature.
The quantity of high-power heater is five, and correspondingly, the quantity of heating unit is also five, respectively：First is high
Power heater 1, first entrance valve 201, first outlet valve 301 and the first by-passing valve 401 constitute the first heating unit；Second
High-power heater 2, second entrance valve 202, second outlet valve 302 and the second by-passing valve 402 constitute the second heating unit；The
Three high-power heaters 3, third inlet valve 203, third outlet valve 303 and third by-passing valve 403 constitute third heating unit；
It is single that 4th high-power heater 4, the 4th inlet valve 204, the 4th outlet valve 304 and the 4th by-passing valve 404 constitute the 4th heating
Member；5th high-power heater 5, the 5th inlet valve 205, the 5th outlet valve 305 and the 5th by-passing valve 405 constitute the 5th heating
Unit.
Five high-power heaters adjust heating power using PLC control cabinet 7；Wherein the first high-power heater 1, second
High-power heater 2 and third high-power heater 3 use on-off type mode of heating, make entire heating system economy, efficiently.
All inlet valve, outlet valve and by-passing valves are all made of electric control valve, and all temperature, pressure signal are by control
System 7 processed is acquired, adjusts, is analyzed；Control system 7 is arranged sodium outlet temperature and is fed back with heating power, is exported by 6 sodium of reheater
Temperature and declared working condition temperature gap, adjust the 4th high-power heater 4,6 power of the 5th high-power heater 5 and reheater,
Realize auto-adjustment control.
Compared to the prior art compared with the present invention has following advantage：
1. avoiding since steam heating is likely to form the risk of strong sodium-water reaction, solution is introduced by high power gas heating
The problem of danger source, provides a kind of high power electrical heating and its control program；
2. electric heating system introduces argon gas protection, completely cut off reacting for air and other gases and Liquid Sodium, while
The pressure stability of heater is significantly maintained in the operations such as removal of load, load down, load up；
It it is entire add 3. heating system adjusts " three-step-march " scheme using on-off type, high power coarse adjustment, low-power fine tuning
Hot device economical and efficient, securely and reliably；
4. introducing automatic feedback regulation scheme so that the sodium outlet temperature of entire heating system can reach experiment condition
Requirement
5. each unit of heater system establishes one's own system, under nominal situation or accident conditions, bypass can be used to carry out
Flow, isolation accident heater etc. are adjusted, safety and the operability of system are enhanced.
In short, this heating system structure can complete the temperature control of liquid metal sodium, whole system economical and efficient, safety
Reliably, make it possible the high power electrical heating of liquid metal sodium.
Description of the drawings
Fig. 1 is heating system figure of the present invention.
Fig. 2 is high-power heater schematic diagram.
Fig. 3 is heating rod layout drawing in high-power heater.
Fig. 4 is reheater schematic diagram, and wherein Fig. 4 a are reheater front view, and Fig. 4 b are Fig. 4 a along sectional view along A-A.
Specific implementation mode
The present invention is described in detail with reference to the accompanying drawings and examples：
As shown in Figure 1, a kind of liquid metal sodium high power heating system, including multiple high powers being sequentially connected in series add
The power of hot device, each high-power heater is 4.2MW；Low temperature sodium enters heating system, initially enters three-way interface, threeway
The inlet valve 201 of one the first high-power heater 1 of outlet connection, threeway second outlet connect the first by-passing valve 401；First Gao Gong
1 upper end of rate heater connects first outlet valve 301, and 301 rear end pipeline of first outlet valve and 401 rear end pipeline of the first by-passing valve connect
Threeway is connect to cross；By-passing valve and bypass line are mainly used for two class operating modes, when one is that the heating power needed for the sodium is relatively low, liquid
Metallic sodium is then without heater, to reduce flow resistance；Secondly for when heater heating go wrong and heating system also
When need to continue to work online, liquid metal sodium is then overhauled without this heater, while to heater；Above first Gao Gong
Rate heater 1, first entrance valve 201, first outlet valve 301 and the first by-passing valve 401 constitute the first heating unit；Second
High-power heater 2, second entrance valve 202, second outlet valve 302 and the second by-passing valve 402 constitute the second heating unit, with
This analogizes, and constitutes multiple heating units, the structure all same of each heating unit；Each heating unit is heated in outer layer covers
Silk and heat-preservation cotton, when startup, make entire heating system temperature reach the solidification point of sodium or more, prevent plugging caused by the solidification of sodium
Accident；Reheater 6 is connected after the last one heating unit, to adjust sodium outlet temperature；Further include and each high-power heater
The PLC control cabinet 7 connected with reheater 6, and the control system 8 that is connect with PLC control cabinet 7.
As shown in Figure 2,3, first high-power heater 1, including heating tank 101 are arranged in 101 ectonexine of heating tank
Heating rod 102, the cowling panel 103 of 102 bottom of heating rod is set in heating tank 101；101 lateral trepanning of the heating tank,
Simplify heating rod in heating tank 101 to arrange, 280 heating rods are housed on each container, single heating rod power is 15kW；Consider
To the diameter of heating rod 101, avoid heating rod with heating rod in tip contact, heating rod is arranged in heating container radial section
Upper arrangement 20, heating rod tip edge distance are 36mm, and heating rod length is 700mm, in the axial every layer of heating rod of heater
Spacing be 220mm, between layers use insert row arrange, mainly disturb sodium flow regime to enhance heat exchange, simultaneously
Interlamellar spacing can be reduced so that heating rod arrangement is compacter；14 layers of heating rod are arranged in the axial direction to meet experiment heating work(
Rate demand, a height of 3.1m of bringing-up section cylinder；To meet the pressure-bearing design of container, design pressure 1Mpa, heating wall of a container thickness
For 20mm, increases the hemispherical that height is 0.5m above and below heating container and cover, the total a height of 4.1m of heater；Heat container into
Outlet is provided with temperature point and pressure-measuring-point, and heating container head is provided with explosive valve 104 and argon gas inlet 105, explosion
Valve 104 mainly prevents jumping and causing the accident for the sodium loop transient pressure in the case of circuit removal of load, load up, load down,
Argon gas primarily serve isolation can reactant such as oxygen, carbon dioxide etc. effect, while the pressure in heater can also be maintained；The
One high-power heater, 1 bottom end is provided with cowling panel 103, plays the role of assignment of traffic and disturbance flow field.
As shown in figure 4, the reheater 6 divides for Multi-stage heating pipe, the structure of every grade of heating tube is all identical, and adjacent two-stage adds
It being connected by bend pipe between heat pipe, the inner sleeve 601 of every grade of heating tube is used as fluid channel, outer tube 602 to be used as heating tube,
Small voltage high current is directly added to be heated at 602 both ends of outer tube, the insulating layer between inner sleeve 601 and outer tube 602
603 by filling magnesium oxide insulated, and 602 both ends wall surface of outer tube arranges thermocouple to monitor reheater wall portion temperature, reheating
Device inlet and outlet arrangement thermocouple monitoring metallic sodium temperature.
The quantity of the high-power heater is five, and correspondingly, the quantity of heating unit is also five, respectively：The
It is single that one high-power heater 1, first entrance valve 201, first outlet valve 301 and the first by-passing valve 401 constitute the first heating
Member；Second high-power heater 2, second entrance valve 202, second outlet valve 302 and the second by-passing valve 402 constitute the second heating
Unit；Third high-power heater 3, third inlet valve 203, third outlet valve 303 and third by-passing valve 403 constitute third and add
Hot cell；4th high-power heater 4, the 4th inlet valve 204, the 4th outlet valve 304 and the 4th by-passing valve 404 constitute the 4th
Heating unit；5th high-power heater 5, the 5th inlet valve 205, the 5th outlet valve 305 and the 5th by-passing valve 405 constitute the
Five heating units.
Five high-power heaters adjust heating power using PLC control cabinet 7；Wherein the first high-power heater 1,
Second high-power heater 2 and third high-power heater 3 use on-off type mode of heating, make entire heating system economy, height
Effect.
A kind of heating adjusting method of liquid metal sodium high power heating system：All inlet valve, outlet valve and bypass
Valve is all made of electric control valve, and all temperature, pressure signal are by the acquisition of control system 7, adjusting, analysis；Control system 7 is set
It sets sodium outlet temperature to feed back with heating power, by 6 sodium outlet temperature of reheater and declared working condition temperature gap, it is high to adjust the 4th
6 power of power heater 4, the 5th high-power heater 5 and reheater realizes auto-adjustment control.
Specifically heating adjusting method is：All inlet valves, outlet valve and by-passing valve are first turned on, heating system is taken out
It is vacuum-treated, opens the argon gas inlet valve of each high-power heater, and keep argon pressure；Open each heating unit
High-power heater outer layer heating rod so that high-power heater, inlet valve, outlet valve and the by-passing valve of each heating unit and
Line temperature reaches within the scope of 180 DEG C -220 DEG C, keeps electrically heated rod heating power to stablize, closes all inlet valves, outlet
Valve and by-passing valve；It is then turned on the first by-passing valve 401, the second by-passing valve 402, third by-passing valve 403, opens the 4th inlet valve
204, the 4th outlet valve 304, the 5th inlet valve 205 and the 5th outlet valve 305 are opened after liquid metal sodium enters heating system
The 4th high-power heater 4, the 5th high-power heater 5 and reheater 6 are opened, while controlling the 4th high-power heater the 4, the 5th
The heating power of high-power heater and reheater 6 slowly increases；After the 4th high-power heater 4 reaches peak power, open
The first heating unit is opened, first entrance valve 201, first outlet valve 301 are opened, closes the first by-passing valve 401, starts the first Gao Gong
Rate heater 1, while reducing the power of the 4th high-power heater 4；If heating system power need to be further increased, similar to upper
It states the first heating unit opening ways and opens the second high-power heater 2 and third high-power heater 3, according to sodium outlet temperature
The heating power of adjusting reheater 6, the 4th high-power heater 4 and the 5th high-power heater 5, makes metallic sodium outlet temperature
Reach declared working condition；When heating system needs to close, the first high-power heater 1, the second high-power heater are closed successively
2, third high-power heater 3, the 4th high-power heater 4, the 5th high-power heater 5 and reheater 6 keep electric heating wire
Heating power is constant, after all metallic sodiums are from heating system emptying, stops heater strip heating, while argon gas being kept to protect.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
The specific implementation mode of the present invention is only limitted to this, for those of ordinary skill in the art to which the present invention belongs, is not taking off
Under the premise of from present inventive concept, several simple deduction or replace can also be made, all shall be regarded as belonging to the present invention by institute
Claims of submission determine scope of patent protection.
Claims (7)
1. a kind of liquid metal sodium high power heating system, it is characterised in that：Add including multiple high powers being sequentially connected in series
The power of hot device, each high-power heater is 4.2MW；Low temperature sodium enters heating system, initially enters three-way interface, threeway
The inlet valve (201) of one outlet the first high-power heater of connection (1), threeway second outlet connect the first by-passing valve (401)；The
One high-power heater (1) upper end connects first outlet valve (301), first outlet valve (301) rear end pipeline and the first by-passing valve
(401) rear end pipeline connection threeway crosses；By-passing valve and bypass line are mainly used for two class operating modes, and one is to be heated needed for sodium
When power is relatively low, liquid metal sodium is then without heater, to reduce flow resistance；Secondly to be asked when heater heating
It inscribes and heating system is when also needing to continue to work online, liquid metal sodium is then examined without this heater, while to heater
It repaiies；Above first high-power heater (1), first entrance valve (201), first outlet valve (301) and the first by-passing valve (401)
Constitute the first heating unit；Second high-power heater (2), second entrance valve (202), second outlet valve (302) and second
By-passing valve (402) constitutes the second heating unit, and so on, multiple heating units are constituted, the structure of each heating unit is homogeneous
Together；Each heating unit makes entire heating system temperature reach the solidifying of sodium in outer layer covers heater strip and heat-preservation cotton, startup
More than solid point, prevent pipeline jam accident caused by the solidification of sodium；Reheater (6) is connected after the last one heating unit, to adjust sodium
Outlet temperature；Further include the PLC control cabinet (7) being connect with each high-power heater and reheater (6), and is controlled with PLC
The control system (8) of cabinet (7) connection.
2. a kind of liquid metal sodium high power heating system according to claim 1, it is characterised in that：First Gao Gong
Rate heater (1) includes heating tank (101), and the heating rod (102) in heating tank (101) ectonexine is arranged, and is arranged in heating tank
(101) cowling panel (103) of interior heating rod (102) bottom；The lateral trepanning of the heating tank (101) simplifies in heating tank (101)
Heating rod is arranged, and 280 heating rods are housed on each container, and single heating rod power is 15kW；In view of heating rod (101)
Diameter avoids heating rod with heating rod in tip contact, and being arranged on heating container radial section for heating rod is arranged 20, added
Hot pin tip edge distance is 36mm, and heating rod length is 700mm, is 220mm in the spacing of the axial every layer of heating rod of heater,
It uses insert row to arrange between layers, mainly disturbs the flow regime of sodium to enhance heat exchange, while interlamellar spacing can be reduced,
So that heating rod arrangement is compacter；14 layers of heating rod are arranged in the axial direction to meet experiment heating power requirements, bringing-up section cylinder
The a height of 3.1m of body；To meet the pressure-bearing design of container, design pressure 1Mpa, heating wall of a container thickness is 20mm, is held in heating
Device increases the hemispherical that height is 0.5m and covers up and down, the total a height of 4.1m of heater；Heating container inlet and outlet are provided with temperature survey
Point and pressure-measuring-point, heating container head are provided with explosive valve (104) and argon gas inlet (105), and explosive valve (104) is mainly anti-
Sodium loop transient pressure in the case of the removal of load of non-return road, load up, load down jumps and causes the accident, and argon gas primarily serves
Isolation can reactant effect, while the pressure in heater can also be maintained；First high-power heater (1) bottom end is provided with whole
Flowing plate (103) plays the role of assignment of traffic and disturbance flow field.
3. a kind of liquid metal sodium high power heating system according to claim 1, it is characterised in that：The reheater
(6) it is divided into Multi-stage heating pipe, the structure of every grade of heating tube is all identical, is connected by bend pipe between adjacent two-step heating pipe, every grade
The inner sleeve (601) of heating tube is used as fluid channel, outer tube (602) to be used as heating tube, directly add at outer tube (602) both ends
Small voltage high current is heated, and the insulating layer (603) between inner sleeve (601) and outer tube (602) is by filling magnesia
Insulation, outer tube (602) both ends wall surface arrange thermocouple to monitor reheater wall portion temperature, reheater inlet and outlet arrangement thermoelectricity
Even monitoring metallic sodium temperature.
4. a kind of liquid metal sodium high power heating system according to claim 1, it is characterised in that：The high power adds
The quantity of hot device is five, and correspondingly, the quantity of heating unit is also five, respectively：First high-power heater (1),
One inlet valve (201), first outlet valve (301) and the first by-passing valve (401) constitute the first heating unit；Second high power adds
Hot device (2), second entrance valve (202), second outlet valve (302) and the second by-passing valve (402) constitute the second heating unit；The
Three high-power heaters (3), third inlet valve (203), third outlet valve (303) and third by-passing valve (403) constitute third
Heating unit；4th high-power heater (4), the 4th inlet valve (204), the 4th outlet valve (304) and the 4th by-passing valve
(404) the 4th heating unit is constituted；5th high-power heater (5), the 5th inlet valve (205), the 5th outlet valve (305) and
5th by-passing valve (405) constitutes the 5th heating unit.
5. a kind of liquid metal sodium high power heating system according to claim 4, it is characterised in that：Five Gao Gong
Rate heater adjusts heating power using PLC control cabinet (7)；Wherein the first high-power heater (1), the second high-power heater
(2) and third high-power heater (3) use on-off type mode of heating, make entire heating system economy, efficiently.
6. a kind of heating adjusting method of liquid metal sodium high power heating system described in any one of claim 1 to 5, special
Sign is：All inlet valve, outlet valve and by-passing valves are all made of electric control valve, and all temperature, pressure signal are by control
System (7) processed acquires, adjusts, analyzes；Control system (7) is arranged sodium outlet temperature and is fed back with heating power, passes through reheater (6)
Sodium outlet temperature and declared working condition temperature gap adjust the 4th high-power heater (4), the 5th high-power heater (5) and again
Hot device (6) power realizes auto-adjustment control.
7. heating adjusting method according to claim 6, it is characterised in that：Specific method is：First turn on all entrances
Valve, outlet valve and by-passing valve carry out vacuumize process to heating system, open the argon gas inlet valve of each high-power heater
Door, and keep argon pressure；Open the high-power heater outer layer heating rod of each heating unit so that the height of each heating unit
Power heater, inlet valve, outlet valve and by-passing valve and line temperature reach within the scope of 180 DEG C -220 DEG C, and electricity is kept to add
Hot pin heating power is stablized, and all inlet valves, outlet valve and by-passing valve are closed；It is then turned on the first by-passing valve (401), by second
Port valve (402), third by-passing valve (403) open the 4th inlet valve (204), the 4th outlet valve (304), the 5th inlet valve (205)
With the 5th outlet valve (305) the 4th high-power heater (4), the 5th Gao Gong are opened after liquid metal sodium enters heating system
Rate heater (5) and reheater (6), while controlling the 4th high-power heater (4), the 5th high-power heater and reheater
(6) heating power slowly increases；After the 4th high-power heater (4) reaches peak power, the first heating unit is opened, is opened
First entrance valve (201), first outlet valve (301) are opened, the first by-passing valve (401) is closed, starts the first high-power heater
(1), at the same reduce the 4th high-power heater (4) power；If heating system power need to be further increased, similar to above-mentioned
One heating unit opening ways open the second high-power heater (2) and third high-power heater (3), according to sodium outlet temperature
The heating power of adjusting reheater (6), the 4th high-power heater (4) and the 5th high-power heater (5), makes metallic sodium export
Temperature reaches declared working condition；When heating system needs to close, the first high-power heater (1), the second high power are closed successively
Heater (2), third high-power heater (3), the 4th high-power heater (4), the 5th high-power heater (5) and reheater
(6), it keeps electric heating wire heating power constant, after all metallic sodiums are from heating system emptying, stops heater strip heating, simultaneously
Keep argon gas protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810037587.1A CN108286799B (en) | 2018-01-15 | 2018-01-15 | High-power liquid metal sodium heating system and adjusting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810037587.1A CN108286799B (en) | 2018-01-15 | 2018-01-15 | High-power liquid metal sodium heating system and adjusting method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108286799A true CN108286799A (en) | 2018-07-17 |
| CN108286799B CN108286799B (en) | 2020-05-26 |
Family
ID=62835259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810037587.1A Active CN108286799B (en) | 2018-01-15 | 2018-01-15 | High-power liquid metal sodium heating system and adjusting method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108286799B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855282A (en) * | 2019-01-25 | 2019-06-07 | 西安交通大学 | Radiant type liquid metal sodium high power heating system and heating means |
| CN109855283A (en) * | 2019-01-25 | 2019-06-07 | 西安交通大学 | Liquid metal sodium high power heating system and heating means |
| CN110068138A (en) * | 2019-04-26 | 2019-07-30 | 西安交通大学 | A kind of liquid metal sodium direct-type high power heating system and heating means |
| CN110068137A (en) * | 2019-04-26 | 2019-07-30 | 西安交通大学 | Direct-type liquid metal sodium high power heating system and heating means |
| CN111680417A (en) * | 2020-06-03 | 2020-09-18 | 西安交通大学 | Thermal design method suitable for sodium water direct-current steam generator |
| CN113871038A (en) * | 2021-09-29 | 2021-12-31 | 南京航空航天大学 | Space nuclear power system adopting multistage heat exchange power shielding heat exchanger and circulation method |
| CN114484859A (en) * | 2022-01-28 | 2022-05-13 | 新疆八一钢铁股份有限公司 | Electric heating device and heating system for metallurgical gas |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2469374Y (en) * | 2001-02-27 | 2002-01-02 | 王佐峰 | Heating apparatus with multiple heat source |
| CN102322680A (en) * | 2011-07-15 | 2012-01-18 | 西安交通大学 | Liquid metal sodium experimental loop electrical heating preheater |
| CN102915777A (en) * | 2012-10-10 | 2013-02-06 | 西安交通大学 | Liquid metal sodium boiling two-phase thermal-hydraulic test loop system and test method thereof |
| CN107062587A (en) * | 2017-04-20 | 2017-08-18 | 西安交通大学 | A kind of high-power preheater for liquid-state metallic sodium experiment loop |
-
2018
- 2018-01-15 CN CN201810037587.1A patent/CN108286799B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2469374Y (en) * | 2001-02-27 | 2002-01-02 | 王佐峰 | Heating apparatus with multiple heat source |
| CN102322680A (en) * | 2011-07-15 | 2012-01-18 | 西安交通大学 | Liquid metal sodium experimental loop electrical heating preheater |
| CN102915777A (en) * | 2012-10-10 | 2013-02-06 | 西安交通大学 | Liquid metal sodium boiling two-phase thermal-hydraulic test loop system and test method thereof |
| CN107062587A (en) * | 2017-04-20 | 2017-08-18 | 西安交通大学 | A kind of high-power preheater for liquid-state metallic sodium experiment loop |
Non-Patent Citations (4)
| Title |
|---|
| QIU RENSEN: "Experimental investigation of turbulent heat transfer to liquid sodium in the thermal entrance region of an annulus", 《NUCLEAR ENGINEERING AND DESIGN》 * |
| 吴季兰: "《汽轮机设备及系统 第2版》", 30 April 2006, 中国电力出版社 * |
| 唐基本，马建明等: "《快堆电气系统与设备》", 31 March 2012, 原子能出版社 * |
| 大庆油田特种作业安全培训中心: "《工业锅炉运行与安全技术》", 31 May 2013 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855282A (en) * | 2019-01-25 | 2019-06-07 | 西安交通大学 | Radiant type liquid metal sodium high power heating system and heating means |
| CN109855283A (en) * | 2019-01-25 | 2019-06-07 | 西安交通大学 | Liquid metal sodium high power heating system and heating means |
| CN109855282B (en) * | 2019-01-25 | 2020-01-21 | 西安交通大学 | Radiation type high-power heating system and heating method for liquid metal sodium |
| CN110068138A (en) * | 2019-04-26 | 2019-07-30 | 西安交通大学 | A kind of liquid metal sodium direct-type high power heating system and heating means |
| CN110068137A (en) * | 2019-04-26 | 2019-07-30 | 西安交通大学 | Direct-type liquid metal sodium high power heating system and heating means |
| CN110068138B (en) * | 2019-04-26 | 2020-05-15 | 西安交通大学 | Direct high-power heating system and method for liquid sodium metal |
| CN111680417A (en) * | 2020-06-03 | 2020-09-18 | 西安交通大学 | Thermal design method suitable for sodium water direct-current steam generator |
| CN111680417B (en) * | 2020-06-03 | 2021-11-09 | 西安交通大学 | Thermal design method suitable for sodium water direct-current steam generator |
| CN113871038A (en) * | 2021-09-29 | 2021-12-31 | 南京航空航天大学 | Space nuclear power system adopting multistage heat exchange power shielding heat exchanger and circulation method |
| CN113871038B (en) * | 2021-09-29 | 2023-09-26 | 南京航空航天大学 | Space nuclear power system adopting multistage heat exchange power shielding heat exchanger and circulation method |
| CN114484859A (en) * | 2022-01-28 | 2022-05-13 | 新疆八一钢铁股份有限公司 | Electric heating device and heating system for metallurgical gas |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108286799B (en) | 2020-05-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108286799A (en) | A kind of liquid metal sodium high power heating system and its adjusting method | |
| CN110517797A (en) | A kind of nuclear reactor annular fuel damage experimental provision and experimental method | |
| CN106531245B (en) | Used in nuclear power station in-pile instrument sheath assembly | |
| CN107881522A (en) | Hydrogen generating system | |
| CN104751906A (en) | Heat exchange system and nuclear reactor system | |
| CN109147970A (en) | Fuel can LOCA simulation test device | |
| CN106287634A (en) | A kind of injecting type high-voltage electrode boiler | |
| CN107732277A (en) | More storehouse fuel cell systems and heat exchanger assembly | |
| CN107062587B (en) | High-power preheater for liquid metal sodium experimental loop | |
| CN205842621U (en) | Steam temperature rate of change real-time monitoring system | |
| CN107069064A (en) | A kind of fuel cell system and method based on live hydrogen manufacturing | |
| CN103573282B (en) | The liquid gaseity converter of carbon dioxide/nitrogen and converting system | |
| CN109855283A (en) | Liquid metal sodium high power heating system and heating means | |
| CN110195853A (en) | Electrode steam generator and heated by electrodes steam generation method | |
| CN110068138A (en) | A kind of liquid metal sodium direct-type high power heating system and heating means | |
| CN105206313A (en) | Cold fusion reaction test device | |
| CN109920564A (en) | A kind of overcritical double helix natural cycle system and method | |
| CN109461950B (en) | SOFC battery control device | |
| CN109855282A (en) | Radiant type liquid metal sodium high power heating system and heating means | |
| US9640829B2 (en) | Heater and method of operating | |
| CN110068137B (en) | Direct high-power liquid metal sodium heating system and heating method | |
| CN115376395B (en) | Full-process simulation test system for water loss accident | |
| Vyas et al. | Experimental investigations on steady state natural circulation behavior of multiple parallel boiling channel system | |
| CN202871909U (en) | Hydrogen heating device | |
| CN217356827U (en) | Feed water recirculation system of once-through steam generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |