CN103585795B - A kind of experimental system eliminating the subcooled boiling steam bubble that preheater produces - Google Patents
A kind of experimental system eliminating the subcooled boiling steam bubble that preheater produces Download PDFInfo
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- CN103585795B CN103585795B CN201210291272.2A CN201210291272A CN103585795B CN 103585795 B CN103585795 B CN 103585795B CN 201210291272 A CN201210291272 A CN 201210291272A CN 103585795 B CN103585795 B CN 103585795B
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Abstract
The invention belongs to reactor thermo-hydraulics and security technology area, be specifically related to a kind of experimental system eliminating the subcooled boiling steam bubble that preheater produces.Wherein steam bubble elimination tank is arranged between the downstream of preheater and the upstream of experimental provision, the position perforate eliminating upper middle, tank side at steam bubble is connected with inlet tube, the position perforate eliminating lower middle, tank side at steam bubble is connected with outlet, inlet tube is connected with preheater, and outlet is connected with experimental provision; The top of eliminating tank at steam bubble is provided with condenser, and condensing water inlet parameter control system, condensation-water drain control system are connected with condenser respectively; The top of eliminating tank at steam bubble is provided with exhauster system; The top of eliminating tank at steam bubble is provided with temperature measurement system and pressure-measuring system, and the downstream of outlet is provided with flowmeter A.This system efficiently can eliminate the subcooled boiling steam bubble that preheater produces, and avoids the steam bubble that in thermal-hydraulic experiment, preheater produces to enter in experimental provision.
Description
Technical field
The invention belongs to reactor thermo-hydraulics and security technology area, be specifically related to a kind of experimental system eliminating the subcooled boiling steam bubble that preheater produces.
Background technology
In nuclear energy field, boiling heat transfer and biphase gas and liquid flow are widely used.Due to diversity and the complexity of boiling heat transfer and biphase gas and liquid flow, since over half a century, although people constantly analyse boiling heat transfer and two-phase flow mechanism, disclose its basic law, but still have physical phenomenon and the mechanism of many unknowns so far, await people and explore further.
From the development course of boiling heat transfer and biphase gas and liquid flow, theoretical developments is also immature, depends on experimental study, studies by experiment, obtain based on the rule-of-thumb relation of experimental data or semi-empirical relation, be used for predicting the thermal-hydraulic performance of heat transfer unit (HTU).When reactor thermo-hydraulics experimental provision designs, in order to improve experimental provision inlet temperature, making intake condition in experimental provision can meet the related request of simulation original shape parameter, usually preheater being set before experimental provision.In order to improve the efficiency of heating surface of preheater and the arrangement space reduced shared by preheater, preheater is generally direct-fired straight tube or bend pipe structure form, but, after preheater heating, easily make heating wall regional area occur subcooled boiling phenomenon, the steam bubble of generation directly enters in experimental provision, introduce uncertain factor, for some accurate thermal-hydraulic experiments, as the impact of steam bubble visualized experiment is comparatively large, the actual physical phenomenon in original shape design even can not be reflected.Therefore, be necessary that in experimental loop system, design a set of subcooled boiling steam bubble eliminates system, guaranteeing under the prerequisite that experimental provision suction parameter meets the demands, eliminate preheater produce subcooled boiling steam bubble, for reactor thermo-hydraulics experimental study and original shape design verification significant.
Summary of the invention
The experimental system of the subcooled boiling steam bubble that the object of the present invention is to provide a kind of simple elimination preheater to produce, guaranteeing under the prerequisite that experimental provision suction parameter meets the demands, the subcooled boiling steam bubble that efficient elimination preheater produces, the steam bubble that in thermal-hydraulic experiment, preheater produces is avoided to enter in experimental provision, introduce uncertain factor, cause the actual physical phenomenon that can not reflect in original shape design apparatus.
For achieving the above object, the technical solution used in the present invention is:
Eliminate an experimental system for the subcooled boiling steam bubble that preheater produces, this system comprises steam bubble and eliminates tank, inlet tube, condenser, condensing water inlet parameter control system, condensation-water drain control system, exhauster system, temperature measurement system, pressure-measuring system, outlet, flowmeter A; Described steam bubble is eliminated tank and is arranged between the downstream of preheater and the upstream of experimental provision, the position perforate eliminating upper middle, tank side at steam bubble is connected with inlet tube, the position perforate eliminating lower middle, tank side at steam bubble is connected with outlet, inlet tube is connected with preheater, and outlet is connected with experimental provision; The top of eliminating tank at steam bubble is provided with condenser, and condensing water inlet parameter control system, condensation-water drain control system are connected with condenser respectively; The top of eliminating tank at steam bubble is provided with exhauster system; The top of eliminating tank at steam bubble is provided with temperature measurement system and pressure-measuring system, and the downstream of outlet is provided with flowmeter A.
Described condenser is eliminated tank by steady pin and steam bubble and is connected and fixed.
The temperature of the cooling water that described condensing water inlet parameter control system flows out according to condensation-water drain control system and flow, regulate the temperature and the flow that enter the cooling water of condenser, cooling water enters condenser by condensing water inlet parameter control system, is flowed out by condensation-water drain control system.
Described exhauster system forms by eliminating with steam bubble the valve that some pipelines and pipeline that tank is communicated with are arranged.
Described temperature measurement system is by eliminating with steam bubble pipeline that tank is communicated with and the temperature sensor be arranged on pipeline forms.
Described pressure-measuring system is by eliminating with steam bubble pipeline that tank is communicated with and the pressure sensor be arranged on pipeline forms.
Beneficial effect acquired by the present invention is:
The experimental system of the subcooled boiling steam bubble that elimination preheater of the present invention produces can eliminate the subcooled boiling steam bubble of preheater generation efficiently, the steam bubble that in thermal-hydraulic experiment, preheater produces is avoided to enter in experimental provision, introduce uncertain factor, cause reactor thermo-hydraulics to test the actual physical phenomenon that can not reflect in original shape device; Simultaneously by reasonably regulating and pressure and temperature parameter and outlet flow in monitoring elimination tank, guaranteeing that the suction parameter of experimental provision can meet the requirement of original shape design driver, reaching the object of reactor thermo-hydraulics experimental verification.
Accompanying drawing explanation
Fig. 1 is the experimental system structure chart of the subcooled boiling steam bubble that elimination preheater of the present invention produces;
In figure: 1, steam bubble eliminates tank; 2, inlet tube; 3, condenser; 4, steady pin; 5, condensing water inlet parameter control system; 6, condensation-water drain control system; 7, exhauster system; 8, temperature measurement system; 9, pressure-measuring system; 10, outlet; 11, flowmeter A; 12, flowmeter B; 13, preheater; 14, experimental provision.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
The experimental system of the subcooled boiling steam bubble that elimination preheater of the present invention produces comprises steam bubble and eliminates tank 1, inlet tube 2, condenser 3, steady pin 4, condensing water inlet parameter control system 5, condensation-water drain control system 6, exhauster system 7, temperature measurement system 8, pressure-measuring system 9, outlet 10, flowmeter A11;
Described steam bubble is eliminated tank 1 and is arranged between the downstream of preheater 13 and the upstream of experimental provision 14, and the subcooled boiling steam bubble being provided for preheater 13 generation is within it separated, and enters in experimental provision 14 to avoid steam bubble; The position perforate eliminating upper middle, tank 1 side at steam bubble is connected with inlet tube 2, the position perforate eliminating lower middle, tank 1 side at steam bubble is connected with outlet 10, inlet tube 2 is connected with preheater 13, outlet 10 is connected with experimental provision 14, the connected mode that a this high position is entered, low level goes out takes full advantage of steam bubble and more easily to move upward this feature by buoyancy, the upper space making steam bubble be easier to eliminate to steam bubble tank 1 is assembled, thus improves the deaeration efficiency that steam bubble eliminates tank 1.
The top of eliminating tank 1 at steam bubble is provided with condenser 3, and condenser 3 is eliminated tank 1 by steady pin 4 and steam bubble and is connected and fixed, and the subcooled boiling steam bubble that preheater 13 produces enters by inlet tube 2 upper space that steam bubble eliminates tank 1, is gathered in around condenser 3.
Condensing water inlet parameter control system 5, condensation-water drain control system 6 are connected with condenser 3 respectively, and cooling water enters condenser 3 by condensing water inlet parameter control system 5, flow out eventually through condensation-water drain control system 6; The temperature of the cooling water that condensing water inlet parameter control system 5 flows out according to condensation-water drain control system 6 and flow, regulate the temperature and the flow that enter the cooling water of condenser 3, by condensing water inlet parameter control system 5 and condensation-water drain control system 6, can the temperature of reasonable adjusting cooling water and flow, steam bubble is made to eliminate the top condensation of tank 1 at steam bubble, guarantee that the steam bubble fluid temperature (F.T.) eliminated in tank 1 is unlikely to reduce too much, thus reach the requirement of experiment parameter.
The top of eliminating tank 1 at steam bubble is provided with exhauster system 7, eliminates the gas in tank 1 for quick drain steam bubble, avoids steam bubble to eliminate in tank 1 and causes pressure to rise fast because gas is too many, the security of harm experimental provision 14; Exhauster system 7 can form, by the opening and closing steam discharge of valve by eliminating with steam bubble the valve that some pipelines and pipeline that tank 1 is communicated with are arranged.
Simultaneously in order to ensure the real subcooled boiling steam bubble eliminated preheater 13 and produce, the top of eliminating tank 1 at steam bubble is provided with temperature measurement system 8 and pressure-measuring system 9, temperature measurement system 8 can by eliminating with steam bubble pipeline that tank 1 is communicated with and the temperature sensor be arranged on pipeline forms, and pressure-measuring system 9 can by eliminating with steam bubble pipeline that tank 1 is communicated with and the pressure sensor be arranged on pipeline forms; The downstream of outlet 10 is provided with flowmeter A11; By observing temperature measurement system 8 and pressure-measuring system 9, the temperature and pressure situation of change in steam bubble elimination tank 1 can be monitored, and then judge steam bubble eliminates in tank 1 whether also there is subcooled boiling steam bubble; Whether the uninterrupted that simultaneously also can be obtained by the monitoring flowmeter B12 of preheater front end and the flowmeter A11 in outlet 10 downstream is consistent, and interpretation goes out whether really to eliminate the subcooled boiling steam bubble in steam bubble elimination tank 1.
In experimentation, the subcooled boiling steam bubble that preheater 13 produces enters by inlet tube 2 upper space that steam bubble eliminates tank 1, is gathered in around condenser 3; By condensing water inlet parameter control system 5 reasonable adjusting condensing water inlet parameter, make the steam bubble condensation around condenser 3, thus eliminate the steam bubble at top; Temperature measurement system 8 and the pressure-measuring system 9 of the setting of tank 1 top is eliminated eventually through steam bubble, and the flowmeter A11 be connected with outlet 10, judge whether really to eliminate the subcooled boiling steam bubble in steam bubble elimination tank 1.
In experimentation, if the gas that preheater 13 produces is too much, the pressure causing steam bubble to be eliminated in tank 1 rises rapidly, slowly can open the exhauster system 7 that steam bubble eliminates tank 1 top, release steam bubble eliminates gas in tank 1, guarantees that in steam bubble elimination tank 1, pressure in the reasonable scope.
Claims (6)
1. eliminate an experimental system for the subcooled boiling steam bubble that preheater produces, it is characterized in that: this system comprises steam bubble and eliminates tank (1), inlet tube (2), condenser (3), condensing water inlet parameter control system (5), condensation-water drain control system (6), exhauster system (7), temperature measurement system (8), pressure-measuring system (9), outlet (10), flowmeter A(11); Described steam bubble is eliminated tank (1) and is arranged between the downstream of preheater (13) and the upstream of experimental provision (14), the position perforate eliminating tank (1) upper middle, side at steam bubble is connected with inlet tube (2), the position perforate eliminating tank (1) lower middle, side at steam bubble is connected with outlet (10), inlet tube (2) is connected with preheater (13), and outlet (10) is connected with experimental provision (14); The top of eliminating tank (1) at steam bubble is provided with condenser (3), and condensing water inlet parameter control system (5), condensation-water drain control system (6) are connected with condenser (3) respectively; The top of eliminating tank (1) at steam bubble is provided with exhauster system (7); The top of eliminating tank (1) at steam bubble is provided with temperature measurement system (8) and pressure-measuring system (9), and the downstream of outlet (10) is provided with flowmeter A(11).
2. the experimental system of the subcooled boiling steam bubble of elimination preheater generation according to claim 1, is characterized in that: described condenser (3) is eliminated tank (1) by steady pin (4) and steam bubble and is connected and fixed.
3. the experimental system of the subcooled boiling steam bubble of elimination preheater generation according to claim 1, it is characterized in that: the temperature of the cooling water that described condensing water inlet parameter control system (5) is flowed out according to condensation-water drain control system (6) and flow, adjustment enters temperature and the flow of the cooling water of condenser (3), cooling water enters condenser (3) by condensing water inlet parameter control system (5), is flowed out by condensation-water drain control system (6).
4. the experimental system of subcooled boiling steam bubble that produces of elimination preheater according to claim 1, is characterized in that: described exhauster system (7) forms by eliminating with steam bubble the valve that some pipelines and pipeline that tank (1) is communicated with are arranged.
5. the experimental system of subcooled boiling steam bubble that produces of elimination preheater according to claim 1, is characterized in that: described temperature measurement system (8) is by eliminating with steam bubble pipeline that tank (1) is communicated with and the temperature sensor be arranged on pipeline forms.
6. the experimental system of subcooled boiling steam bubble that produces of elimination preheater according to claim 1, is characterized in that: described pressure-measuring system (9) is by eliminating with steam bubble pipeline that tank (1) is communicated with and the pressure sensor be arranged on pipeline forms.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210291272.2A CN103585795B (en) | 2012-08-16 | 2012-08-16 | A kind of experimental system eliminating the subcooled boiling steam bubble that preheater produces |
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| CN201210291272.2A CN103585795B (en) | 2012-08-16 | 2012-08-16 | A kind of experimental system eliminating the subcooled boiling steam bubble that preheater produces |
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| CN103585795A CN103585795A (en) | 2014-02-19 |
| CN103585795B true CN103585795B (en) | 2015-08-26 |
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| CN105018952A (en) * | 2015-08-12 | 2015-11-04 | 中冶南方工程技术有限公司 | Cooling defoaming device |
| CN113267152B (en) * | 2021-05-14 | 2022-11-08 | 中国核动力研究设计院 | Experimental device and method for accurately measuring wall surface activation core characteristic parameters |
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