CN106297918B - A kind of output control device of overcritical electrical heating simulation transient state core heat release - Google Patents
A kind of output control device of overcritical electrical heating simulation transient state core heat release Download PDFInfo
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- CN106297918B CN106297918B CN201610929912.6A CN201610929912A CN106297918B CN 106297918 B CN106297918 B CN 106297918B CN 201610929912 A CN201610929912 A CN 201610929912A CN 106297918 B CN106297918 B CN 106297918B
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- module
- heat release
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- core heat
- heating
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/001—Mechanical simulators
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- 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
Abstract
The invention discloses a kind of output control device of overcritical electrical heating simulation transient state core heat release, including the core heat release analog module, measurement module, the number that are sequentially connected to adopt control module, power module；Core heat release analog module, the transient power of control dividual simulation heating passage；Measurement module, inlet flow rate, the out temperature of fluid and the pressure of fluid of measurement heating passage；Number adopt control module, including be sequentially connected data collecting system, common calculation module, Reactivity feedback simulation, D/A output modules；Power module, the analog quantity information that D/A output modules provide is received, automatically adjust the power distribution of dividual simulation heating passage.The output control device of the overcritical electrical heating simulation transient state core heat release of the present invention, the heating power of heating passage to core heat release analog module is controlled, automatic feedback control of the density reactivity to power is realized, available for using the physically and thermally work characteristic out-of-pile test of the transient state under electrical heating Simulation Core core heat release.
Description
Technical field
The present invention relates to the power control techniques of electrical heating simulation transient state core heat release, and in particular to a kind of overcritical electrical heating
Simulate the output control device of transient state core heat release.
Background technology
Supercritical-Pressure Light Water Cooled Reactor is water cooled reator uniquely selected in the 4th generation of technology such as nuclear energy system.Because core structure is complicated, comes in and goes out
Mouth coolant density difference is larger, the crisis that out-phase flow instability occurs in reactor core be present.In addition, coolant density is violent
Change changes the slowing-down cross-section field of reactor core, influences the power distribution of reactor core, the Density Distribution of cooling agent is changed, so as to be formed
The potential special nuclear heat coupling feature of Supercritical-Pressure Light Water Cooled Reactor, cause hot in the increase and heap of flow instability occurrence probability
The increase of work hydraulic parameters oscillation amplitude, influence the thermal-hydraulic safety of reactor.Therefore, in order to ensure Supercritical-Pressure Light Water Cooled Reactor
Safe operation is, it is necessary to carry out the nuclear heat Coupled Flow unstability experimental study of parallel port under super critical condition.
, it is necessary to simulate transient state core heat release with electrical heating in Experiment of Thermophysics, to reflect the coupling rule of the nuclear heat in actual reactor core
Rule.Needed herein based on engineering background, a kind of new overcritical electrical heating mould is proposed by technological innovation and experimental verification
Intend the output control device of transient state core heat release.
The content of the invention
Present invention aims at a kind of output control device of overcritical electrical heating simulation transient state core heat release is provided, thing is realized
Reason calculates to be simulated with the coupling test of thermal technology's phenomenon, with Transient Thermal waterpower and neutron thing under strong feedback condition in research reactor
Parameters variation characteristic is managed, experimental technique means is provided to optimize the economy of new heap and security, automatically adjusts bringing-up section
Power distribution, so as to realize the Power Control using electrical heating simulation transient state nuclear heat, solve because core structure gateway is cold
But agent density acute variation, influences the power distribution of reactor core, thermal-hydraulic parameter in increase flow instability occurrence probability, heap
The technique of experimental simulation problems such as shock range increase.
The present invention is achieved through the following technical solutions：
A kind of output control device of overcritical electrical heating simulation transient state core heat release, including the core heat release simulation being sequentially connected
Module, measurement module, number adopt control module, power module；
Core heat release analog module, the transient power of control dividual simulation heating passage；
Measurement module, inlet flow rate, the out temperature and pressure of fluid of measurement heating passage；
Number adopt control module, including be sequentially connected data collecting system, common calculation module, Reactivity feedback simulation mould
The information transmission that measurement module gathers to common calculation module is carried out energy equation by block, D/A output modules, data collecting system
Calculate, obtain the density information of the temperature parameter and fluid of experimental section along journey, and by Reactivity feedback analog module, obtain work(
Rate change information, and digital information is converted into analog quantity information through D/A output modules；
Power module, the analog quantity information that D/A output modules provide is received, automatically adjust the work(of dividual simulation heating passage
Rate is distributed.
In the prior art, supercritical water reactor causes water cooling because core structure is complicated, gateway coolant density difference is larger
Heap core power non-uniform Distribution, and then cause reactor core water parallel port flow instability vertically.At present in Experiment of Thermophysics
The flowing instability Journal of Sex Research of development, it is general to use the simulation realized under the conditions of non-uniform wall thickness to power non-uniform Distribution,
This mode can only obtain the power distribution of one group of fixation for a passage, can not realize to the transient control of power distribution and
Orientation adjustment.
Inventor has found through a large amount of technological innovations and experimental verification, is filled using water parallel port stepwise adjustable electricity-saving heating
Put, heat stepwise is carried out to water parallel port, and independent transient state tune is carried out to every section of heating power by control device of the present invention
Section, so as to meet the simulation in reactor thermo-hydraulics experimental study to non-uniform heating experiment condition.
The Poewr control method of overcritical electrical heating simulation transient state core heat release of the present invention is：To water parallel port
During heat stepwise, using measurement module, the inlet flow rate of measurement water heating passage in parallel, out temperature, the stream of fluid
The pressure of body is pressure and other parameters of the fluid in heating passage, and the parameter information that this is measured is transferred to number and adopts control mould
Block, adopt control module data processing through number and be converted to the receivable analog quantity information of power module, power module is according to reception
Analog quantity information automatically adjusts the power distribution of corresponding heating parallel port segmentation, is released so as to realize using heating simulation transient state core
The Power Control of heat.
Wherein, number adopts the specific data handling procedure of control module and is：The data that number adopts control module and includes being sequentially connected are adopted
Collecting system, common calculation module, Reactivity feedback analog module, D/A output modules, the parameter information that measurement module measurement obtains
Common calculation module is transferred to after conversion, obtains the temperature parameter of each experimental section of heat stepwise and the density information of fluid, so
One-dimensional neutron-transport equation is solved by Reactivity feedback analog module afterwards, changed power information is obtained, then through D/A output modules
Changed power information is converted into analog quantity information by digital information, there is provided to power module.
The technical program center heat release analog module is the fuel assembly of reactor core or reactor, is the public affairs in core field
Know general knowledge；Measurement module is NI data collecting systems, can Quick Acquisition accordingly heat the inlet temperature of passage, the inlet and outlet of fluid
The pressure or fluid of temperature, fluid in heating passage are ability in other physical parameters such as pressure of whole experimental loop
The prior art in domain, its structure and principle are no longer described in detail；Data collecting system, the parameter mainly obtained from measurement module measurement
Extracted in information, for example, the flow parameter of extraction core heat release analog module entrance, inlet and outlet fluid temperature (F.T.) parameter etc., its particular type
Number can be DT9828 data collecting card, or NI-CRIO series data collecting system；The main work of common calculation module
With being that the signals such as the magnitude of voltage collected from data collecting system are converted into the signals such as actual temperature, pressure and flow, lead to
The existing equipment being known in the art with computing module, its structure and its principle are the common knowledge of art, are no longer described in detail.
Reactivity feedback analog module, density of the temperature parameter, fluid that extraction common calculation module is calculated along journey
Information, by solving neutron-transport equation, obtain changed power information, and the physical computing model used in the technical program for
One-dimensional neutron-transport equation, relative to the Point reactor nutron kinetics equation of the zero dimension used in the prior art, one-dimensional neutron transport
Equation is accurately calculated, and has taken into full account changing rule of the heating power along heating passage axial direction, can be more preferably truer
Reaction prototype reactor reactor core in power axial distribution situation.Reactivity feedback analog module is known in the art existing
Equipment, its structure and its principle are the common knowledge of art, are no longer described in detail.
D/A output modules, the changed power information that Reactivity feedback analog module obtains is converted into corresponding electric signal,
And power module is conveyed to, power module changes heating power in real time, so as to realize feedback effect of the nuclear reactivity to power.
D/A output modules are also known as D/A modular converters, convert digital signals into analog signal.
Further, the power module is programmable modularized dc source, and programmable modularized dc source passes through
Direct current power control module carries out Power Control, the analog quantity that programmable modularized dc source conveys according to D/A output modules
Information, the power distribution of the fire end of core heat release analog module is adjusted, the control to simulating transient state core heat release power.
Further, the measurement module is NI data collecting systems.One end of measurement module is connected with experimental stand, collection
Thermal-hydraulic parameter in test loop, the other end are connected with the Feedback of Power program in control computer, by the parameter of collection
It is input to Power control procedures.And NI data collecting systems, frequency acquisition is high, can reach 10 times per second, can truly reflect
The dynamic characteristic of Supercritical-Pressure Light Water Cooled Reactor, and a long period nuclear reactivity is extremely slow to the feedback procedure of power in the prior art
Slowly, the change of heating power is also very slow, and the duration is up to more than 600s, it is impossible to true reflection Supercritical-Pressure Light Water Cooled Reactor flowing
Instable dynamic characteristic.
Further, the core heat release analog module is the fuel assembly of nuclear reactor or reactor.Core heat release mould
Intend module as core heat release analog section, be two parallel ports, it is unstable suitable for core heat release Coupled Flow under super critical condition
Journal of Sex Research, 25MPa pressure and 500 DEG C of high temperature can be born.
Further, the core heat release analog module includes two heating passages in parallel, heats and sets at least three on passage
Individual conducting copper, a power module is connected respectively between adjacent conductive copper bar.
Further, the port of export of the heating passage is connected with heat exchanger, storage tank successively, and storage tank passes through plunger pump
It is connected with the entrance point for heating passage.
The present invention compared with prior art, has the following advantages and advantages：
(1) present invention quickly measures the heating of core heat release analog module using NI data collecting systems as measurement module
The inlet flow rate of passage, inlet and outlet fluid temperature (F.T.), acquisition rate are faster than the transformation period yardstick of Transient Thermal phenomenon, can be truly accurate
Really reflect actual transient changing rule.
(2) output control device of the overcritical electrical heating transient simulation core heat release of the present invention, control module is adopted using number, can
The parameter information that measurement module gathers is converted to after volume of data is handled can be supplied directly to the simulation of power module
Information is measured, power module can be realized to be heated to the heating passage of corresponding heating region, while can be according to analog quantity information
The power distribution of change adjustment heating passage bringing-up section, so as to realize the Power Control using electrical heating simulation transient state core heat release.
(3) output control device of the overcritical electrical heating simulation transient state core heat release of the present invention, including the connection of certain signal are closed
The measurement module of system, number adopts control module, power module, core heat release analog module, to the heating passage of core heat release analog module
Heating power be controlled, realize automatic feedback control of the density reactivity to power, available for using electrical heating simulation heap
Transient state under core heat release physically and thermally work characteristic out-of-pile test.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application
Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is the structural schematic block diagram of the present invention；
Fig. 2 is the core heat release analog module block diagram of the embodiment of the present invention 3；
Fig. 3 is the output control device control method flow chart of the embodiment of the present invention 5.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1：
As shown in figure 1, a kind of output control device of overcritical electrical heating simulation transient state core heat release of the present invention, including successively
Core heat release analog module, measurement module, the number of connection adopt control module, power module；
Core heat release analog module, the transient power of control dividual simulation heating passage；
Measurement module, inlet flow rate, the out temperature and pressure of fluid of measurement heating passage；
Number adopt control module, including be sequentially connected data collecting system, common calculation module, Reactivity feedback simulation,
The information transmission that measurement module gathers to conventional data module is carried out energy equation meter by D/A output modules, data collecting system
Calculate, obtain the density information of the temperature parameter and fluid of experimental section along journey, and by Reactivity feedback analog module, obtain power
Change information, and digital information is converted into analog quantity information through D/A output modules；
Wherein, power module is programmable modularized dc source, and programmable modularized dc source passes through dc source
Control module carries out Power Control.
Wherein, the measurement module is NI data collecting systems.
In the present embodiment, core heat release analog module is reactor core.
Embodiment 2：
The present embodiment in place of the difference of embodiment 1 with being：Core heat release analog module is the fuel assembly of reactor, and will
The output control device of overcritical electrical heating simulation transient state core heat release described in embodiment 1 is used for the Power Control of fuel assembly.
Embodiment 3：
As shown in Fig. 2 the present embodiment in place of the difference of embodiment 1 with being：Core heat release analog module includes two parallel connections
Passage is heated, heats and at least three conducting coppers is set on passage, connect a power module between adjacent conductive copper bar respectively, and
The output control device of overcritical electrical heating simulation transient state core heat release described in embodiment 1 is used into core described in the present embodiment to release
The Power Control of thermal simulation module.
Concrete operation method is：A power module, the collection of NI data collecting systems are connected between two neighboring conducting copper
The inlet flow rate of passage and the temperature of inlet and outlet fluid are heated, number adopts the data collecting systems of control system from NI data acquisitions system
The pressure or heating of the heating inlet flow rate of passage, the out temperature of fluid, fluid in experimental loop needed for being extracted in system
The pressure and other parameters information of inner fluid passage, after conversion, the temperature parameter for obtaining experimental section, fluid density are calculated through conventional data
Information, by the parameter information by solving one-dimensional neutron transport equation, obtain heating channel power change information, then by D/A
Output module willDigital information is converted to analog quantity information,It is supplied to corresponding power module, power module and heating passage one
One correspondence, direct current power control module can control heating logical according to the analog quantity information being supplied to by controlling dc source
The power distribution in road, so as to realize the Power Control using electrical heating simulation transient state core heat release.
Embodiment 4：
The present embodiment further limits on the basis of embodiment 3, it is described heating passage the port of export successively with heat exchanger,
Storage tank is connected, and storage tank is connected by plunger pump with heating the entrance point of passage, forms being recycled back to for core heat release simulated experiment
Road.
Embodiment 5：
Using a kind of output control device of overcritical electrical heating simulation transient state core heat release described in above-described embodiment, it has
Body controlling means start core heat release Power control procedures, due to this as shown in figure 3, in the case of the stable operation of test loop
When loop stability run, core heat release module heating power is steady state value.Now to the disturbance of one, loop, such as reduce loop stream
Amount, data collecting system will gather flow, temperature, pressure and the power at new moment.Meanwhile common calculation module adopts these
The voltage signal collected is converted into real flow value, pressure value, temperature value, performance number, and these parameters are transmitted to reaction
Property feedback module.Reactivity feedback analog module carries out the power calculation based on one-dimensional neutron-transport equation and energy equation, obtains
Transmitted to the performance number at new moment, and by the value by D/A output modules to direct current power control module, realize that electrical heating is simulated
The transient power control of core heat release.
One-dimensional neutron transport equation and energy equation are the common knowledge of this area in the present embodiment, are no longer described in detail.
Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include
Within protection scope of the present invention.
Claims (6)
- A kind of 1. output control device of overcritical electrical heating simulation transient state core heat release, it is characterised in that：Including what is be sequentially connected Core heat release analog module, measurement module, number adopt control module, power module；Core heat release analog module, the transient power of control dividual simulation heating passage；Measurement module, inlet flow rate, the out temperature and pressure of fluid of measurement heating passage；Number adopt control module, including be sequentially connected data collecting system, common calculation module, Reactivity feedback analog module, D/A output modules, extract in the parameter information that data collecting system obtains from measurement module measurement, and the parameter of the extraction is believed Breath passes to common calculation module and obtains the temperature parameter and fluid density information of each experimental section under heat stepwise experimental model, And heating power change information is obtained by Reactivity feedback analog module, the heating power is changed into number through D/A output modules Word information is converted to analog quantity information；Power module, receive the analog quantity information that D/A output modules provide, the power distribution of regulation dividual simulation heating passage.
- 2. a kind of output control device of overcritical electrical heating simulation transient state core heat release according to claim 1, its feature It is：The power module is programmable modularized dc source, and programmable modularized dc source passes through DC power control Module carries out Power Control.
- 3. a kind of output control device of overcritical electrical heating simulation transient state core heat release according to claim 2, its feature It is：The measurement module is NI data collecting systems.
- 4. a kind of output control device of overcritical electrical heating simulation transient state core heat release according to claim 1, its feature It is：The core heat release analog module is the fuel assembly of nuclear reactor or reactor.
- 5. a kind of output control device of overcritical electrical heating simulation transient state core heat release according to claim 1, its feature It is：The core heat release analog module includes two heating passages in parallel, heats and sets at least three conducting coppers, phase on passage A power module is connected between adjacent conducting copper respectively.
- 6. a kind of output control device of overcritical electrical heating simulation transient state core heat release according to claim 5, its feature It is：The port of export of the heating passage is connected with heat exchanger, storage tank successively, and storage tank passes through plunger pump and heating passage Entrance point connects.
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| CN107945896B (en) * | 2017-11-10 | 2019-12-06 | 中国科学院近代物理研究所 | using method of high-temperature high-pressure water-gas fluid effect simulation device |
| CN112326286B (en) * | 2020-10-27 | 2023-06-20 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Device and method for simulating transient heat release of rod-shaped fuel element |
| CN114999687A (en) * | 2022-05-31 | 2022-09-02 | 中国核动力研究设计院 | Electric power adjusting method and system for nuclear reactor thermal hydraulic transient test |
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| CN105957568A (en) * | 2016-07-07 | 2016-09-21 | 中国核动力研究设计院 | System and method for simulating nuclear heat releasing by electric heating |
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| JPH0643282A (en) * | 1992-07-22 | 1994-02-18 | Ishikawajima Harima Heavy Ind Co Ltd | Hydrothermal force mock-up test device for integral pressurized water reactor |
| JPH11142579A (en) * | 1997-11-05 | 1999-05-28 | Mitsubishi Heavy Ind Ltd | Deterioration evaluation device of steam generator heat transfer tube |
| CN105225709A (en) * | 2015-08-26 | 2016-01-06 | 西南石油大学 | The reactor core electrical heating elements method for designing of Natural Circulation and forced circulation circuit system |
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