CN202942897U - Visual three-sectional natural circulating working section - Google Patents
Visual three-sectional natural circulating working section Download PDFInfo
- Publication number
- CN202942897U CN202942897U CN 201220695285 CN201220695285U CN202942897U CN 202942897 U CN202942897 U CN 202942897U CN 201220695285 CN201220695285 CN 201220695285 CN 201220695285 U CN201220695285 U CN 201220695285U CN 202942897 U CN202942897 U CN 202942897U
- Authority
- CN
- China
- Prior art keywords
- active section
- visual
- sectional
- section
- working section
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The utility model discloses a visual three-sectional natural circulating working section which belongs to the fields of mechanical equipment and nuclear electric power generation. A visual part of the working section is divided into three sections. A stainless steel heating back plate is arranged on one face of a channel of the three-sectional natural circulating working section, and the rest three faces are respectively provided with high temperature resisting transparent quartz glass. The visual three-sectional natural circulating working section provided by the utility model is easy to process and assemble, and wide in application range, a three-sectional visual window is arranged, so that the observing range is large, the sealing can be easily realized, the sealing performance is good, and the sealing demand is reduced, and the sealing performance is enhanced; and by using the visual three-sectional natural circulating working section, various channels can be processed conveniently.
Description
Technical field
The utility model belongs to plant equipment and nuclear energy power generation field, be specifically related to a kind of visual syllogic Natural Circulation active section, can carry out observed and recorded to the phenomenon in passage in running by transparent active section, thereby grasp intuitively the flow condition in passage.Can operation for a long time under certain condition of work, be conducive to research and the application of plant equipment manufacturing, thermal-hydraulic aspect.
Background technology
Natural Circulation refers to by the circulating of the caused fluid of internal fluid density gradient, and density gradient is normally caused by the temperature field of fluid itself, thereby its exercise intensity also depends on the thermograde size.
Natural Circulation is very extensive in industrial application, in the boiler of thermal power plant, in second generation nuclear reactor, in third generation advanced nuclear reactor AP1000 with regard to more utilization the principle of Natural Circulation.
Boiler is the important component part of fired power generating unit, and its dynamic characteristic directly affects the even running of whole unit.The circulatory system in boiler is exactly natural cycle system, generally boiler steam and water circuit is divided into down-comer, water-cooling wall, drum three parts, and this three part is descending branch, condenser and preheating section and the active section of corresponding natural cycle system respectively.And in boiler running process, easily forming the large situation of drum wall temperature difference, the larger temperature difference can make the phenomenons such as drum occurs bending and deformation, and has a strong impact on the safe operation of drum.Therefore, in the drum running, if can see intuitively the variation that occurs in drum, be conducive to analyze these and change the reason that produces, find out the method for removing or reducing these adverse effect factors.
In non-passive safety advanced nuclear plant AP1000, when non-LOCA event, the passive residual heat removal heat exchanger discharge residual heat of nuclear core of meeting an urgent need.The end socket that top (entrance) and bottom (outlet) were restrained and be arranged in to this heat exchanger by one group of C type that is connected on tube sheet forms.The suction line of heat exchanger is connected with RCS heat pipe section, and outlet line is connected with the cold chamber of the low head of steam generator, and they have formed the natural convection loop of a passive residual heat removal with RCS heat pipe section and cold leg.In this natural convection loop, residual heat removal exchanger is equivalent to the condenser in natural cycle system, and reactor core is equivalent to preheating section and active section, and the phenomenon that occurs in reactor core affects the safety of whole reactor.Therefore, in the reactor core running, can be by the associated electronic device visual derivation that the phenomenon that occurs in reactor core is real-time, and utilize the conversion equipment conversion to be presented on the control screen of master-control room, to help to analyze the reason that these phenomenons produce, and timely for these unfavorable factors, related measure is proposed, guarantee reactor safety stable operation.
But some of Natural Circulation form mechanism also not to be familiar with at present fully, therefore, need to be by setting up the Natural Circulation experimental stand, mode is by experiment explored the formation mechanism of more Natural Circulation.But, the active section major part of present experimental stand is not visual, phenomenon in the observation experiment process intuitively, the visual active section of small part is all unistage type, and major part wherein can only be observed the phenomenon that occurs in active section by the aperture on active section, cause the experimental phenomena that to observe seldom, be not enough to prove absolutely some mechanism in the Natural Circulation process.
Most of Natural Circulation active section is through repeatedly experiment repeatedly, or the long operating pressure that all can occur of Applicative time descends gradually in engineering, and the phenomenon that sealing property reduces gradually can cause unpredictable impact to test result and staff's safety.Therefore, be necessary to design a kind of safer, better visual Natural Circulation active section of sealing property.
The utility model content
The utility model provides a kind of visual syllogic Natural Circulation active section, the visual part of active section is divided into three sections, in described syllogic Natural Circulation working section channel, it is stainless steel heating backboard that a face is arranged, and its excess-three face is the thermostable transparent quartz glass.
Active section is vertically placed in system, and the active section lower end is connected with preheating section, and the active section upper end is connected with condenser, and after working-medium water entered bringing-up section from lower end entrance, the observation by bringing-up section was afterwards by upper port outflow bringing-up section.
Various passages can be processed in active section inside; It is stainless steel heating backboard that passage has a face, and its excess-three face is transparency silica glass, records flow phenomenon in visual active section by the high-speed camera instrument in the course of the work.
The whole active section length of described visual syllogic Natural Circulation active section is 120mm-1500mm, adopts three sections visual glass to seal installation, and the mode of burying passage under the middle transition section adopts connects.Three sections every segment length scopes of glass are 50mm-500mm, and effectively observation window is 30mm-480mm, and whole visible segments length range is 90mm-1440mm, and the thermostable transparent quartz glass is middle trough of belt structure.
Described visual syllogic Natural Circulation active section heating power can be set according to the actual requirements, and active section adopts the low voltage and high current heating plate to heat.The installation thermocouple that spiles on steel plate overleaf, totally two rows, 10 of every rows are in order to record the variations in temperature of difference on the heating plate wall.
Visual active section is provided with attemperating unit, and when the temperature rise of heating plate wall surpassed 15 ℃/s, system will automatic cut-off power, and stopped heating is with the protection bringing-up section.
Described visual syllogic Natural Circulation active section working pressure range is 0.1MPa-4.4MPa, and temperature range is 0 ℃-350 ℃.Whole active section parcel is used for being incubated with the perlite material.Visual active section is by the electric insulation of the realization of wrap insulate material on bolt with other pipelines.
The beneficial effects of the utility model are:
The visual syllogic Natural Circulation active section that the utility model provides, active section is easy to process and assemble, and is applied widely, adopts three sections visual windows, range of observation is large, more easily realizes sealing, and sealing property is better, seal request reduces, and sealing property is strengthened, and more conveniently is processed into various passages.
Active section can operation steady in a long-term under certain pressure and higher temperature, has a visual range large, and good seal performance is easy to be processed into the advantages such as various forms of passages.
Description of drawings
Fig. 1 is natural cycle system essential structure figure;
Fig. 2 is visual syllogic Natural Circulation active section top view;
Fig. 3 is visual syllogic active section A-A view in Fig. 2.
Number in the figure:
The 1-condenser; The 2-turbine flowmeter; The 3-preheating section; The 4-active section; The high temperature resistant quartz glass of 5-; The 6-steel plate; 7-heating tube patchhole.
The specific embodiment
The utility model provides a kind of visual syllogic Natural Circulation active section, and the utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment 1
A kind of visual syllogic Natural Circulation active section, the visual part of active section is divided into three sections, and in described syllogic Natural Circulation working section channel, it is stainless steel heating backboard that a face is arranged, and its excess-three face is the thermostable transparent quartz glass.
Active section is vertically placed in system, and the active section lower end is connected with preheating section, and the active section upper end is connected with condenser, and after working-medium water entered bringing-up section from lower end entrance, the observation by bringing-up section was afterwards by upper port outflow bringing-up section.
Various passages can be processed in active section inside; Record flow phenomenon in visual active section by the high-speed camera instrument in the course of the work.
The whole active section length of described visual syllogic Natural Circulation active section is 120mm-1500mm, adopts three sections visual glass to seal installation, and the mode of burying passage under the middle transition section adopts connects.Three sections every segment length scopes of glass are 50mm-500mm, and effectively observation window is 30mm-480mm, and whole visible segments length range is 90mm-1440mm, and the thermostable transparent quartz glass is middle trough of belt structure.
Described visual syllogic Natural Circulation active section heating power can be set according to the actual requirements, and active section adopts the low voltage and high current heating plate to heat.The installation thermocouple that spiles on steel plate overleaf, totally two rows, 10 of every rows are in order to record the variations in temperature of difference on the heating plate wall.
Visual active section is provided with attemperating unit, and when the temperature rise of heating plate wall surpassed 15 ℃/s, system will automatic cut-off power, and stopped heating is with the protection bringing-up section.
Described visual syllogic Natural Circulation active section working pressure range is 0.1MPa-4.4MPa, and temperature range is 0 ℃-350 ℃.Whole active section parcel is used for being incubated with the perlite material.Visual active section is by the electric insulation of the realization of wrap insulate material on bolt with other pipelines.
The workflow of this natural cycle system is: natural cycle system relies on the working-medium water in preheating section 3 and 4 pairs of circulatory systems of active section to heat, it is seethed with excitement in passage, the density contrast drive fluid of consequent active section and descending branch fluid is after process active section 4, rise in condenser 1, and then through descending branch, get back in preheater 3 by turbine flowmeter 2, form Natural Circulation.
In related visual syllogic Natural Circulation active section 4, working-medium water is through after the heating of preheating section 3, enter the heat tunnel of active section 4 bottom active section, utilize electric heating tube to continue heating from preheater working-medium water out, make it produce various different flow patterns in working section channel.
In related visual syllogic Natural Circulation active section 4, in the active section running, utilize the high-speed camera instrument to record required flow phenomenon, utilize thermocouple measuring temperature, the temperature that records is through electric conversion equipment, and reflection output is on computer screen.
On related visual active section 4, attemperating unit is arranged, when the temperature rise of heating plate wall surpassed 15 ℃/s, system will automatic cut-off power, and stopped heating is with the protection bringing-up section.
Related syllogic active section working pressure range is 0.1MPa-4.4MPa, and temperature range is 0 ℃-350 ℃.
The above; it is only the better specific embodiment of the utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement are within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (9)
1. visual syllogic Natural Circulation active section, it is characterized in that: the visual part of active section is divided into three sections, and in described syllogic Natural Circulation working section channel, it is stainless steel heating backboard that a face is arranged, and its excess-three face is the thermostable transparent quartz glass.
2. active section according to claim 1 is characterized in that: active section is vertically placed in system, and the active section lower end is connected with preheating section, and the active section upper end is connected with condenser.
3. active section according to claim 1 is characterized in that: adopt three sections visual glass to seal installation, the mode of burying passage under the middle transition section adopts connects.
4. active section according to claim 1, it is characterized in that: the whole active section length of described visual syllogic Natural Circulation active section is 120mm-1500mm, three sections every segment length scopes of glass are 50mm-500mm, effectively observation window is 30mm-480mm, and whole visible segments length range is 90mm-1440mm.
5. active section according to claim 1, it is characterized in that: the thermostable transparent quartz glass is middle trough of belt structure.
6. active section according to claim 1, it is characterized in that: installation thermocouple overleaf spiles on steel plate.
7. active section according to claim 1, it is characterized in that: visual active section is provided with attemperating unit.
8. active section according to claim 1 is characterized in that: whole active section parcel is with the perlite material, is used for insulation.
9. active section according to claim 1 is characterized in that: visual active section is realized electric insulation with other pipelines by wrap insulate material on bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220695285 CN202942897U (en) | 2012-12-14 | 2012-12-14 | Visual three-sectional natural circulating working section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220695285 CN202942897U (en) | 2012-12-14 | 2012-12-14 | Visual three-sectional natural circulating working section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202942897U true CN202942897U (en) | 2013-05-22 |
Family
ID=48418613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220695285 Expired - Fee Related CN202942897U (en) | 2012-12-14 | 2012-12-14 | Visual three-sectional natural circulating working section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202942897U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103041888A (en) * | 2012-12-14 | 2013-04-17 | 华北电力大学 | Visualized three-section natural circulation working segment |
| CN103413579A (en) * | 2013-07-08 | 2013-11-27 | 华北电力大学 | Natural circulation loop system of lead-bismuth alloy |
-
2012
- 2012-12-14 CN CN 201220695285 patent/CN202942897U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103041888A (en) * | 2012-12-14 | 2013-04-17 | 华北电力大学 | Visualized three-section natural circulation working segment |
| CN103413579A (en) * | 2013-07-08 | 2013-11-27 | 华北电力大学 | Natural circulation loop system of lead-bismuth alloy |
| CN103413579B (en) * | 2013-07-08 | 2016-04-06 | 华北电力大学 | A kind of natural circulation loop system of lead-bismuth alloy |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102661845B (en) | Visualized narrow rectangular natural circulation system | |
| CN106066235B (en) | Supercritical water narrow passage Natural Circulation experimental provision and method | |
| CN106952669B (en) | Stagnation pressure external container cooling test rack in a kind of fusant heap | |
| CN103366838B (en) | A kind of MSR buffer salt natural circulation cooling system | |
| CN104347125A (en) | Double-channel natural circulation system device | |
| CN104361913A (en) | Secondary side passive waste heat removal system | |
| CN106297914A (en) | A kind of passive high-temperature heat pipe fast reactor reactor core heat transfer system and method thereof | |
| CN202942897U (en) | Visual three-sectional natural circulating working section | |
| CN103041888A (en) | Visualized three-section natural circulation working segment | |
| CN102820067B (en) | Natural circulation heat exchanger for discharging waste heat of supercritical water reactor | |
| CN201242878Y (en) | Pool type on-line cooling system for sodium cold rapid stack main container | |
| CN204178729U (en) | A kind of long-term passive containment thermal conduction system | |
| CN102000460A (en) | Steam-water separator | |
| CN103839600B (en) | A kind of flow measurement device for pool natural circulation reactor and measuring method | |
| CN203520890U (en) | Double-channel natural circulating system device | |
| CN203397713U (en) | Secondary side afterheat removal system with non-condensable gas collecting device | |
| CN104409118B (en) | Thermal hydraulic experimental system and method for study on corrosion product deposit of fusion reactor | |
| CN202599639U (en) | Visual natural circulation system with narrow rectangular channel | |
| CN109920564A (en) | A kind of overcritical double helix natural cycle system and method | |
| CN205719474U (en) | Supercritical water narrow passage Natural Circulation experimental provision | |
| CN104599730A (en) | Pressurized water reactor (PWR) nuclear power generation mechanism | |
| CN204242602U (en) | Secondary side passive residual heat guiding system | |
| CN102759464A (en) | Gas circulation on-line monitoring method and device for sulfur hexafluoride electrical equipment | |
| CN103310856A (en) | Pressurized water reactor power generation system with intrinsic safety | |
| CN101656120A (en) | Low-temperature generation device by nuclear energy of gas cooled reactor of CO2 working medium co-production |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20141214 |
|
| EXPY | Termination of patent right or utility model |