CN104568377A - Eccentric pipe for simulating hybrid reactor subcritical energy cladding passage in heating, and experimental device - Google Patents
Eccentric pipe for simulating hybrid reactor subcritical energy cladding passage in heating, and experimental device Download PDFInfo
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- CN104568377A CN104568377A CN201410726583.6A CN201410726583A CN104568377A CN 104568377 A CN104568377 A CN 104568377A CN 201410726583 A CN201410726583 A CN 201410726583A CN 104568377 A CN104568377 A CN 104568377A
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Abstract
The invention discloses an eccentric pipe for simulating a hybrid reactor subcritical energy cladding passage in heating, and an experimental device. The center of the inner diameter circle of the eccentric pipe is represented by O1, the center of the outer diameter circle of the eccentric pipe is represented by O2, the distance from O1 to O2 is greater than zero, the line segment between O1 and O2 is represented by O1O2, a plurality of thermoelectric couples are welded on the outer diameter wall of the eccentric pipe, the welding points of the thermoelectric couples and the eccentric pipe are symmetrically distributed by taking the line segment as a symmetric axis, the outer wall of the eccentric pipe is provided with a pressure guiding pipe communicated to the interior of the eccentric pipe, and a heat insulation protecting structure is arranged on the outer wall of the eccentric pipe. The experimental device comprises the eccentric pipe, the two ends of the eccentric pipe are connected with screwed nipples, one end of each screwed nipple, far away from the eccentric pipe, is connected with a threaded flange, and an electrified copper bar is further welded on the outer wall of the eccentric pipe. By using the experimental device, single-phase flow and heat-transfer characteristic experiment can be carried out under a full circumferential inhomogeneous heating condition, and the thermal-hydraulic characteristics of a hybrid reactor subcritical energy cladding cooling passage are simulated.
Description
Technical field
The present invention relates to the experimental provision of the special thermal boundary condition of simulation hybrid reactor subcritical energy covering passage, particularly a kind of simulation hybrid reactor subcritical energy covering single channel cooling medium circumference non-uniform heating characteristic experimental apparatus.Belong to fusion-driven fission reactor new exploitation of energy resources field, belong to specifically thermal-Hydraulics Design checking and thermal safety limits formulate the experimental technique field that must carry out.
Background technology
New century, China faced serious energy shortage and energy structure defect problem.Easy fission nuclear fuel reserves needed for tradition fissioning nucleus reactor are limited, and face the lot of challenges such as nuclear safety, waste disposal and nuclear proliferation.After Fukushima, Japan nuclear accident, the development of fission reactor is worldwide subject to greater impact, and the security of fission reactor is queried again.At present, realize pure fusion nuclear energy commercialization and also there is many technology and difficulty economically, clean, the safe and lasting energy can not be provided for the mankind in a short time.Fusion-fission hybrid reactor, as a kind of half-way house, receives the concern of the U.S., Japan, Europe and China's researcher.China relies on International Thermal-Nuclear Experimental Reactor planning item (ITER), propose to adopt the driving of By Fusion Neutron source that the subcritical covering of fission fuel is housed, develop collection Energy transmission, fuel rises in value, nuke rubbish utilizes and produce the multifunctional integrated novel reactions such as tritium and pile.
Adopt the covering that modular fuel covering replaces ITER original in the hybrid reactor subcritical energy covering conceptual design that ITER device drives, and it is circumferentially divided into 32 submodules; Adopt the parallel channel pipe embedding submodule inside as Main Coolant passage, each submodule outwards arranges six layers of ooling channel altogether from plasma side.Existing physical Design shows, the radial power gradient of the subcritical energy covering that ITER device drives large (peak factor 1.33), and corresponding ooling channel circumference heat flow density is non-uniform Distribution.In addition, subcritical energy covering narrow space, cooling medium consumption are limited, and design and the layout of coolant channel not directly adopt common presurized water reactor thermal safety limits; Corresponding confirmatory experiment need be carried out, set up new subcritical energy covering thermal safety limits, progressively solve the engineering feasibility key issue of the subcritical energy covering of hybrid reactor.
The experimental provision of simulation hybrid reactor subcritical energy covering single channel cooling medium flowing heat transfer characteristic should be able to realize passage circumference non-uniform heating, and runner is round section single tube.In current circumferential non-uniform heating tube, flowing heat transfer characteristic research mainly adopts the passage of semi-circumference homogeneous heating semi-circumference thermal insulation; research object is mainly solar energy heating pipe or boiler tubing (Chang Chun; Zhang Qiangqiang; Li Xin; turbulent heat transfer characteristic research in solar energy high temperature endothermic tube under the non-homogeneous hot-fluid boundary condition of circumference; Proceedings of the CSEE, 2012,32 (17): 104-109; Wang Haijun, Tang Renhu, Luo Yushan etc., the heat transfer characteristic of supercritical pressure water in vertical tube under non-uniform heating condition, Nuclear Power Engineering, 2008,29 (4): 57-62.).These devices cannot Simulation with I TER device drive subcritical energy covering cooling medium single channel all-round to non-uniform heating characteristic, the foundation of the single channel flowing heat transfer characteristic test research of hybrid reactor subcritical energy covering cooling medium and thermal safety limits can not be used for.
Summary of the invention
The object of this invention is to provide the experimental provision of the special thermal boundary condition of simulation hybrid reactor subcritical energy covering coolant channel, i.e. a kind of eccentric pipe and experimental provision of simulating hybrid reactor subcritical energy covering single channel cooling medium circumference non-uniform heating.The experimental provision of design can be used for all-round to non-uniform heating condition current downflow heat transfer characteristic experimental study, to check the rationality of sub-critical reactor fuel covering thermal-Hydraulics Design, and then formulate corresponding sub-critical reactor thermal safety limits, for the design of the subcritical hybrid reactor fuel covering cooling system of ITER device driving provides reference.
Implementation of the present invention is as follows: the eccentric pipe of simulation hybrid reactor subcritical energy covering passage non-uniform heating, the center of circle of eccentric pipe internal diameter circle is
o 1, the center of circle of eccentric pipe external diameter circle is
o 2,
o 1arrive
o 2distance be greater than zero,
o 1connect
o 2line segment be line segment
o 1 o 2, the outside diameter wall of eccentric pipe is welded with multiple thermopair, and the jointing soldering points of thermopair and eccentric pipe is with line segment
o 1 o 2for axis of symmetry carries out symmetrical, eccentric pipe outer wall is provided with the pressure guiding pipe being communicated to eccentric pipe inside, and eccentric pipe outer wall is provided with insulated heat structure.
The said apparatus of design can be used for all-round to non-uniform heating condition current downflow heat transfer characteristic experimental study, to check the rationality of sub-critical reactor energy covering thermal-Hydraulics Design, and then formulate corresponding subcritical hybrid reactor thermal safety limits, for the design of the hybrid reactor subcritical energy covering cooling system of ITER device driving provides reference.
The experimental provision of simulation hybrid reactor subcritical energy covering passage heating, comprise the eccentric pipe of above-mentioned simulation hybrid reactor subcritical energy covering passage circumference non-uniform heating, eccentric pipe two ends are connected with threaded connector respectively separately, threaded connector is connected with threaded flange away from one end of eccentric pipe, and eccentric pipe outer wall is also welded with and powers up copper bar.
Described eccentric pipe is stainless-steel pipe.
The pressure guiding pipe that eccentric pipe connects is connected with differential pressure transmitter.
Threaded flange is sleeved in the outer diameter face of threaded connector.
Threaded connector and eccentric pipe carry out argon arc welding and are connected.
Internal diameter circular diameter and the sub-critical reactor coolant channel internal diameter of eccentric pipe are consistent.
The internal diameter circular diameter of eccentric pipe is 16 mm.
Based on said structure, the invention provides a kind of eccentric pipe and experimental provision of simulating hybrid reactor subcritical energy covering single channel cooling medium circumference non-uniform heating characteristic, experimental provision mainly comprises threaded flange, pressure guiding pipe, threaded connector, powers up copper bar and eccentric pipe.By rational Model Abstraction and structural design, make the device invented can simulate the special flowing heat transfer boundary condition of hybrid reactor subcritical energy covering cooling medium single channel and typical flow passage structure.
Target of the present invention is achieved in that the eccentric pipe adopting direct current heated wall thickness ununiformity even by powering up copper bar, obtains circumferential nonuniform heating power; Eccentric pipe outer wall does heat insulating construction, and heat release amount is mainly derived by cooling medium through inwall, and to simulate the even heat flow density of ooling channel circumferential asymmetry under hybrid reactor subcritical energy covering power Radial Rotation Error condition, eccentric pipe adopts High-precision Deep Hole to bore processing.
According to eccentric pipe xsect provided by the invention, be mainly used in simulation sub-critical reactor coolant channel heat flow density circumference non-uniform Distribution characteristic.Wherein, interior circular diameter and hybrid reactor subcritical energy covering coolant channel internal diameter are consistent, outside diameter
φ 2and eccentric throw
o 1 o 2determined by structural strength demand and heat flow density.The outside diameter wall of eccentric pipe is welded with multiple thermopair, and the jointing soldering points of thermopair and eccentric pipe is with line segment
o 1 o 2for axis of symmetry carries out symmetrical, to obtain the wall temperature distribution of circumference local.
Described eccentric pipe adopts High-precision Deep Hole to bore processing and obtains, and eccentric pipe two ends are connected with loop with threaded connector by threaded flange.Eccentric pipe internal diameter
φ 1=16 mm; Adopting direct current heating by powering up copper bar, utilizing eccentric pipe circumferential thickness different thus obtaining the even heating power of circumferential asymmetry.Insulation is done in channel outer wall face, namely eccentric pipe outer wall is provided with insulated heat structure, thus obtains the even heat flow density of vias inner walls face circumferential asymmetry.On-way resistance is recorded in conjunction with differential pressure transmitter by pressure guiding pipe, namely the pressure guiding pipe that eccentric pipe connects is connected with pressure difference transmitter, the pressure drop of flow direction is measured by pressure guiding pipe, this device can be used for hybrid reactor subcritical energy covering cooling medium single channel movable pole point characteristic test research, for the formulation of the checking of modular fuel covering thermal-Hydraulics Design and thermal safety limits provides benchmark.
Beneficial effect of the present invention: utilize this experimental provision to carry out all-round single-phase movable pole point characteristic test under non-uniform heating condition, to simulate the hot-working hydraulic characteristic of hybrid reactor subcritical energy covering coolant channel.Subcritical energy cladding modular formula fuel part thermal technology safety behavior experimental study carried out by this experimental provision at present, and the feasibility study for subcritical hybrid reactor thermal-Hydraulics Design provides experiment to support.
Accompanying drawing explanation
Fig. 1 is the cross sectional representation of eccentric pipe of the present invention.
Fig. 2 is the experimental provision schematic diagram that eccentric pipe is formed.
Accompanying drawing mark in figure is expressed as: 21, threaded flange; 22, pressure guiding pipe; 23, threaded connector; 24, power up copper bar, 25, eccentric pipe.
Embodiment
Embodiment one
As shown in Figure 1.The eccentric pipe of simulation hybrid reactor subcritical energy covering passage heating, the center of circle of eccentric pipe 25 internal diameter circle is
o 1, the center of circle of eccentric pipe 25 external diameter circle is
o 2,
o 1arrive
o 2distance be greater than zero,
o 1connect
o 2line segment be line segment
o 1 o 2, the outside diameter wall of eccentric pipe is welded with multiple thermopair, and the jointing soldering points of thermopair and eccentric pipe is with line segment
o 1 o 2for axis of symmetry carries out symmetrical, eccentric pipe 25 outer wall is provided with the pressure guiding pipe 22 being communicated to eccentric pipe 25 inside, and eccentric pipe 25 outer wall is provided with insulated heat structure.If namely P arrow indication in Fig. 1 is the jointing soldering points of thermopair and eccentric pipe.
As shown in Figure 2, the experimental provision of simulation hybrid reactor subcritical energy covering passage heating, comprise the eccentric pipe of above-mentioned simulation hybrid reactor subcritical energy covering passage heating, eccentric pipe 25 two ends are connected with threaded connector 23 respectively separately, threaded connector is connected with threaded flange 21 away from one end of eccentric pipe 25, and eccentric pipe 25 outer wall is also welded with and powers up copper bar 24.
As Fig. 2, comprise an eccentric pipe 25,2 threaded connectors 23,2 threaded flanges 21,2 and power up copper bar 24, at least 2 pressure guiding pipes.
Described eccentric pipe 25 is stainless-steel pipe.
The pressure guiding pipe 22 that eccentric pipe 25 connects is connected with differential pressure transmitter.
Threaded flange 21 is sleeved in the outer diameter face of threaded connector 23.
Threaded connector 23 carries out argon arc welding with eccentric pipe 25 and is connected.
Internal diameter circular diameter and the sub-critical reactor coolant channel internal diameter of eccentric pipe 25 are consistent.
The internal diameter circular diameter of eccentric pipe 25 is 16 mm.
Based on said structure, the invention provides a kind of eccentric pipe and experimental provision of simulating hybrid reactor subcritical energy covering single channel cooling medium circumference non-uniform heating characteristic, experimental provision mainly comprises threaded flange, pressure guiding pipe, threaded connector, powers up copper bar and eccentric pipe.By rational Model Abstraction and structural design, make the device invented can simulate the special flowing heat transfer boundary condition of subcritical energy covering cooling medium single channel and typical flow passage structure.
Target of the present invention is achieved in that the eccentric pipe adopting direct current heated wall thickness ununiformity even by powering up copper bar, obtains circumferential nonuniform heating power; Eccentric pipe outer wall does heat insulating construction, and thermal value is mainly derived by cooling medium through inwall, and to simulate the even heat flow density of ooling channel circumferential asymmetry under hybrid reactor subcritical energy covering power Radial Rotation Error condition, eccentric pipe adopts High-precision Deep Hole to bore processing.
According to eccentric pipe xsect provided by the invention, be mainly used in simulating subcritical energy pile coolant channel heat flow density circumference non-uniform Distribution characteristic.Wherein, in order to obtain the characteristic of circumferential non-uniform Distribution heat flow density, interior circular diameter and sub-critical reactor coolant channel internal diameter are consistent, outside diameter
φ 2and eccentric throw
o 1 o 2determined by structural strength demand and heat flow density.The outside diameter wall of eccentric pipe is welded with multiple thermopair, and the jointing soldering points of thermopair and eccentric pipe is with line segment
o 1 o 2for axis of symmetry carries out symmetrical, to obtain the wall temperature distribution of circumference local.
Described eccentric pipe adopts High-precision Deep Hole to bore processing and obtains, and eccentric pipe two ends are connected with loop with threaded connector by threaded flange.Eccentric pipe internal diameter
φ 1=16 mm; Adopting direct current heating by powering up copper bar, utilizing eccentric pipe circumferential thickness different thus obtaining the even heating power of circumferential asymmetry.Insulation is done in channel outer wall face, namely eccentric pipe 25 outer wall is provided with insulated heat structure, thus obtains the even heat flow density of vias inner walls face circumferential asymmetry.On-way resistance is recorded in conjunction with differential pressure transmitter by pressure guiding pipe, namely the pressure guiding pipe 22 that eccentric pipe 25 connects is connected with pressure difference transmitter, the pressure drop of flow direction is measured by pressure guiding pipe, this device can be used for subcritical energy fuel covering cooling medium single channel movable pole point characteristic test research, for the formulation of the checking of modularization subcritical energy covering thermal-Hydraulics Design and thermal safety limits provides benchmark.
The experimental implementation process of said structure is: assemble experimental provision according to said structure, heating power supply is started under cooling medium flow state in the pipe of setting, power up copper bar and electric current is passed to eccentric pipe 25, eccentric pipe 25 generates heat, wall thickness due to eccentric pipe 25 is heterogeneous state, simultaneously under the effect of insulated heat structure, eccentric pipe inwall can obtain circumferential nonuniform heat flux, now by the numerical value of record thermopair, record numerical value and the cooling medium flow state of differential pressure transmitter simultaneously, can total score separate out all-round under non-uniform heating condition single-phase movable pole point characteristic, thus reach the hot-working hydraulic characteristic of simulation hybrid reactor subcritical energy covering coolant channel, to check the rationality of subcritical energy covering thermal-Hydraulics Design, and then formulate corresponding subcritical hybrid reactor thermal safety limits, for the design of the hybrid reactor subcritical energy covering cooling system of ITER device driving provides reference.
As mentioned above, then well the present invention can be realized.
Claims (8)
1. simulate the eccentric pipe of hybrid reactor subcritical energy covering passage heating, it is characterized in that: comprise eccentric pipe (25), the center of circle of eccentric pipe (25) internal diameter circle is
o 1, the center of circle of eccentric pipe (25) external diameter circle is
o 2,
o 1arrive
o 2distance be greater than zero,
o 1connect
o 2line segment be line segment
o 1 o 2, the outside diameter wall of eccentric pipe is welded with multiple thermopair, and the jointing soldering points of thermopair and eccentric pipe is with line segment
o 1 o 2for axis of symmetry carries out symmetrical, eccentric pipe (25) outer wall is provided with and is communicated to the inner pressure guiding pipe (22) of eccentric pipe (25), and eccentric pipe (25) outer wall is provided with insulated heat structure.
2. simulate the experimental provision of hybrid reactor subcritical energy covering passage heating, it is characterized in that: the eccentric pipe comprising the heating of simulation hybrid reactor according to claim 1 subcritical energy covering passage, eccentric pipe (25) two ends are connected with threaded connector (23) respectively separately, threaded connector is connected with threaded flange (21) away from one end of eccentric pipe (25), and eccentric pipe (25) outer wall is also welded with and powers up copper bar (24).
3. the experimental provision of simulation hybrid reactor according to claim 2 subcritical energy covering passage heating, is characterized in that: described eccentric pipe (25) is stainless-steel pipe.
4. the experimental provision of simulation hybrid reactor according to claim 2 subcritical energy covering passage heating, is characterized in that: the pressure guiding pipe (22) that eccentric pipe (25) connects is connected with differential pressure transmitter.
5. the experimental provision of simulation hybrid reactor according to claim 2 subcritical energy covering passage heating, is characterized in that: threaded flange (21) is sleeved in the outer diameter face of threaded connector (23).
6. the experimental provision of simulation hybrid reactor according to claim 2 subcritical energy covering passage heating, is characterized in that: threaded connector (23) is connected by argon arc welding with eccentric pipe (25).
7. the experimental provision of simulation hybrid reactor according to claim 2 subcritical energy covering passage heating, it is characterized in that: threaded flange (21) is communicated with sub-critical reactor coolant channel, internal diameter circular diameter and the hybrid reactor subcritical energy covering coolant channel internal diameter of eccentric pipe (25) are consistent.
8. the experimental provision of simulation hybrid reactor according to claim 2 subcritical energy covering passage heating, is characterized in that: the internal diameter circular diameter of eccentric pipe (25) is 16 mm.
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| CN201410726583.6A CN104568377A (en) | 2014-12-04 | 2014-12-04 | Eccentric pipe for simulating hybrid reactor subcritical energy cladding passage in heating, and experimental device |
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Cited By (2)
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| CN115876434A (en) * | 2023-02-21 | 2023-03-31 | 清华四川能源互联网研究院 | Pressure load propagation experimental device and method |
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Application publication date: 20150429 |