CN202266401U - Pressure-maintaining overhauling sealing experiment table for main coolant fan of high-temperature gas cooled reactor - Google Patents
Pressure-maintaining overhauling sealing experiment table for main coolant fan of high-temperature gas cooled reactor Download PDFInfo
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- CN202266401U CN202266401U CN2011203615014U CN201120361501U CN202266401U CN 202266401 U CN202266401 U CN 202266401U CN 2011203615014 U CN2011203615014 U CN 2011203615014U CN 201120361501 U CN201120361501 U CN 201120361501U CN 202266401 U CN202266401 U CN 202266401U
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- pressurize
- maintenance
- suction port
- sealing
- cooled reactor
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Abstract
The utility model relates to a pressure-maintaining overhauling sealing experiment table for a main coolant fan of a high-temperature gas cooled reactor, which comprises an experiment table body, a cooling water system, a high pressure air source system, a heating system, a temperature measurement system and a bolt tension measurement system. The pressure-maintaining overhauling sealing experiment table can detect pressure-maintaining overhauling sealing performances and feasibility and reliability of key parts in simulating actual working conditions, thereby achieving sealing performance experiments in primary overhauling sealing working states, obtaining sealing performance experiments after secondary overhauling sealing is jointed for many times, analyzing cooling capacity of cooling sleeves, researching treatment methods of residue water in overhauling sealing structures after a cover plate and a cooling sleeve are dismounted, researching dismounting processes and methods of primary overhauling sealing press cover bolts in the high pressure state at the bottom portion of cavity chambers, researching effects of temperature on sealing, mainly measuring temperature of a main shaft, temperature in high pressure cavities, temperature of low pressure cavities and temperature change along the axial direction, and researching effects on deviation of the main shaft on secondary sealing performances.
Description
Technical field
The utility model belongs to the pressure-retaining system field, particularly a kind of pressurize maintenance sealing experiment platform of high temperature gas cooled reactor Main Coolant blower fan.
Background technique
High temperature gas cooled reactor be the 4th generation nuclear reactor a kind of, its adopts helium as freezing mixture, core exit temperature is up to 850～1000 degrees centigrade.It has the conversion of thermal efficiency height, burnup than high, and advantages such as essential safety are the 4th generation one of the advanced nuclear power system technology that China gives priority to.In high temperature gas cooled reactor one circuit system, be used to drive the blower fan that freezing mixture circulates and be called main air blower in system.Main air blower is gas cooled reactor " heart " parts, is to ensure nuclear power running safety control cooling medium circuit critical component.
The high temperature gas cooled reactor main air blower is made up of spiral case, impeller, drive motor, support system, sealing system and Blower Housing.Because the cooling medium (helium) that main air blower drives has radiativity, therefore leak for fear of having radioactive helium, to implement sealing in the main air blower with radioactive helium.At present, main air blower mainly contains two kinds of structures: a kind of is that axle envelope formula structure---promptly between impeller and motor, gland seal system is installed, another kind is the shield electric machine structure---places drive motor in the sealing metal cylindrical shell, makes it the shielding of conductively-closed cover.
One circuit cools agent circulating fan of high temperature gas cooled reactor nuclear power station faces the demand of pressure release during maintenance when adopting mechanical seal as the axle envelope.Several 60-70 that the working pressure of gas cooled reactor is about normal pressure doubly, in case pressure release, the 60-70 of volume doubly so a large amount of had radioactive gas storage difficulty when gas volume will be expanded to work.If through being discharged into the atmosphere pressure release, can cause a large amount of wastes of running off of expensive working gas (helium) on the one hand; Must carry out strictness on the other hand before the discharging and purify, cause operation cost significantly to improve.If, then need the long period, simultaneously through the pressure release of pressurization storing mode; Also need build a caisson with the similar volume of nuclear reactor, when restarting gas cooled reactor, also will progressively pressurize again; Whole process length consuming time, difficulty are big, and the economic loss that the pressure release maintenance brings is serious.
For this reason model utility the pressurize maintenance seal arrangement of high temperature gas cooled reactor main air blower, when main air arbor envelope was changed in maintenance, the pressure in the reactor did not reduce.The number of patent application of pressurize maintenance sealing is CN201010168182.5, is the service behaviour of check pressurize maintenance seal arrangement, has developed pressurize maintenance sealing geometric ratio Laboratory Furniture.
Summary of the invention
In order to overcome the deficiency of above-mentioned existing technology; The purpose of the utility model is to provide a kind of pressurize maintenance sealing experiment platform of high temperature gas cooled reactor Main Coolant blower fan; Can be under the simulation actual conditions, the feasibility and the reliability of check pressurize maintenance sealing function and key components and parts.
To achieve these goals, the technological scheme of the utility model employing is:
A kind of pressurize maintenance sealing experiment platform of high temperature gas cooled reactor Main Coolant blower fan; Comprise by the intermediate body member 13 of cooling jacket 5, ring-type and the following body 14 of peviform and fasten the Laboratory Furniture body of forming 15 successively; Fasten the back and form the closed inner chamber 3 that cooperates with pressurize maintenance seal arrangement; The one-level maintenance sealing of cooling jacket 5 and the corresponding pressurize maintenance in intermediate body member 13 connecting parts seal arrangement; The secondary maintenance sealing of intermediate body member 13 and the corresponding pressurize maintenance in following body 14 connecting parts seal arrangement, cooling jacket 5 is connected through stud 12 with intermediate body member 13
Also comprise:
High-pressure air source system 17; For inner chamber 3 inner pistons 1 high-pressure air is provided through first suction port 7 and second suction port 9 respectively; High-pressure air source system 17 also is communicated with inner chamber 3 through the 3rd suction port 4; First suction port 7 and second suction port 9 are positioned on the cooling jacket 5, and on the body 14, cooling jacket 5 tops had the leakage path mouth 8 of measuring leakage rate under the 3rd suction port 4 was positioned at;
Bolt tension force measuring system 20 is made up of bolt tensioning jack 21, foil gauge 22 and statical strain indicator, and wherein bolt tensioning jack 21 is arranged at stud 12 heads, and foil gauge 22 is arranged at stud 12 on the polished rod part of cooling jacket 5 inside.
First suction port 7 and second suction port 9 are vertical hole, and the 3rd suction port 4 is a horizontal hole.
10 places, said cooling water inlet are provided with water ga(u)ge, and cooling water inlet 10 all is provided with temperature transducer with coolant outlet 6 places, and said leakage path mouth 8 places are provided with gas flowmeter.
Said high-pressure air source system 17 is divided into the maintenance blanket gas branch road 23 and working seal gas branch road 24 of parallel connection, and maintenance blanket gas branch road 23 connects first suction port 7 and second suction ports 9, working seal gas branch road 24 connections the 3rd suction port 4.
The air pressure of said maintenance blanket gas branch road 23 is 18MPa, and the air pressure of said working seal gas branch road 24 is at 4～7MPa, and maintenance blanket gas branch road 23 all has modulating valve and stop valve with working seal gas branch road 24.
Pressurize maintenance seal arrangement supports through spring and is installed in the inner chamber 3.
The utility model has adopted the performance and the reliability thereof of minimum cost checking pressurize maintenance sealing system, can also be used for the geometric ratio performance test of the maintenance seal arrangement of other occasions.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is a Laboratory Furniture body structure schematic representation.
Fig. 3 is the stud layout plan.
Fig. 4 is bolt tensioning jack and foil gauge mounting point schematic representation.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is explained further details.
As shown in Figure 1; The utility model is a kind of pressurize maintenance sealing experiment platform of high temperature gas cooled reactor Main Coolant blower fan; Comprise the Laboratory Furniture body 15 that is used for loading pressurize maintenance seal arrangement; For Laboratory Furniture body 15 provides the cooling water system 16 of checking experiment cooler environment,, the heating system 18 of heating is provided for test for test provides the high-pressure air source system 17 of maintenance gas and work gas; Be used for detecting that pressurize maintenance seal arrangement main shaft temperature distributes and the temperature measurement system 19 of cooling jacket 5 usefulness rubber seal environment temperatures, and be used for the bolt tension force measuring system 20 that testing high voltage state next stage overhauls the sealing gland Bolt dismantling.
Wherein,
High-pressure air source system 17; The maintenance blanket gas branch road 23 and working seal gas branch road 24 that are divided into parallel connection; Maintenance blanket gas branch road 23 connects first suction port 7 and second suction port 9, and for inner chamber 3 inner pistons 1 provide high-pressure air, working seal gas branch road 24 is communicated with inner chamber 3 through the 3rd suction port 4; First suction port 7 and second suction port 9 are positioned on the cooling jacket 5; On the body 14, cooling jacket 5 tops had the leakage path mouth 8 of measuring leakage rate under the 3rd suction port 4 was positioned at, and the air pressure of said maintenance blanket gas branch road 23 is 18MPa; The air pressure of said working seal gas branch road 24 is at 7Mpa, and maintenance blanket gas branch road 23 all has modulating valve and stop valve with working seal gas branch road 24;
Bolt tension force measuring system 20 is made up of bolt tensioning jack 21, foil gauge 22 and statical strain indicator, and wherein bolt tensioning jack 21 is arranged at stud 12 heads, and foil gauge 22 is arranged at stud 12 on the polished rod part of cooling jacket 5 inside.
As shown in Figure 2; Be Laboratory Furniture body structure schematic representation; Comprise by the intermediate body member 13 of cooling jacket 5, ring-type and the following body 14 of peviform fastening the Laboratory Furniture body of forming 15 successively, fasten the back and form the closed inner chamber 3 that cooperates with pressurize maintenance seal arrangement, the one-level maintenance sealing of cooling jacket 5 and the corresponding pressurize maintenance in intermediate body member 13 connecting parts seal arrangement; The secondary maintenance sealing of intermediate body member 13 and the corresponding pressurize maintenance in following body 14 connecting parts seal arrangement; Cooling jacket 5 is connected through stud 12 with intermediate body member 13, and first suction port 7 and second suction port 9 are vertical hole, and the 3rd suction port 4 is a horizontal hole.
As shown in Figure 4, be bolt tensioning jack and foil gauge mounting point schematic representation, wherein bolt tensioning jack 21 is arranged at stud 12 heads, and foil gauge 22 is arranged at stud 12 on the polished rod part of cooling jacket 5 inside.
Narrate respectively in the face of concrete index and the method for measuring of the utility model down.
Maintenance sealing experiment platform auxiliary parameter:
1) high-pressure air source system 17, pressure 7MPa is to closing after the cavity inflation.Pressure check is set, can investigates pressure over time, convert indirectly and leak;
2) the auxiliary bleed pressure 18MPa that devotes oneself to work of primary seal has stop valve and pressure regulator valve; Cooling water recirculation system 16, flow are not less than 12 liters/minute, purified water, 5 microns of filter precisioies.
One, the body general introduction of pressurize maintenance Laboratory Furniture
Maintenance sealing structure and actual size ratio are 1: 1 (agent structure of pressurize maintenance sealing is referring to patent CN201010168182.5) in the Laboratory Furniture, promptly comprise one-level maintenance sealing and secondary maintenance sealing; For the simulation hot environment has designed high-power heating equipment, heat in cavity 3 bottoms; Through the 3rd suction port 4 input pressurized gas.Simultaneously, designed simulation cooling water system 16, can detect main shaft temperature distribution and cooling jacket 5 usefulness rubber seals temperature on every side, studied the cooling effect under the different cooling water flows through the temperature transducer that is installed in main shaft upper edge axial distribution.
Arrange 4 temperature transducers along cavity circumferencial direction, different depth: to be that the 3rd suction port 4, inner chamber 3 are inner overhaul horizontal positions such as seal arrangement tops with horizontal position such as secondary maintenance sealing, inner chamber 3 are inner with horizontal position such as one-level maintenance sealing and inner chamber 3 inner pressurizes in the transducer arrangements position.Wherein, designed the temperature transducer that is deep in the test gas chamber heating-up temperature with accurate detection sealing gas.Open bottom heating system 18, the test cavity is heated, whenever at a distance from one group of sensor temperature registration of 2 minutes records.Investigate the cavity mean temperature and be elevated to 250 ℃ of needed times, investigate each point temperature homogeneity in the temperature-rise period simultaneously;
When above-mentioned the 3rd suction port 4 temperature inside are elevated to 250 ℃, regulate heating system 18 power and make the cavity insulation.The leakage path mouth 8 incoming gas flow amount meters (or helium mass analyzer) of measuring media leakage rate in the upper end, lower end the 3rd suction port 4 is opened, and is forced into 7MPa, and pressurize 30 minutes begins to carry out each item test.
Two, the sealability of the pressurize of high temperature gas cooled reactor Main Coolant blower fan maintenance sealing experiment platform is measured
The 3rd suction port 4 through shown in Figure 2 feeds pressurized gas in seal chamber, start one-level maintenance sealing, is forced into 7.5MPa, pressurize 5 minutes.Keep one-level maintenance seal ring closed, leakage path mouth 8 places in Fig. 2 are through flowmeter survey seal leakage amount.
Three, the cooling capacity of the pressurize of high temperature gas cooled reactor Main Coolant blower fan maintenance sealing experiment platform is measured
10 arrange a fluid flowmeter in the cooling water inlet, the flow when surveying the circulating water proper functioning.In the cooling water inlet 10 with coolant outlet 6 respectively arrange a temperature transducer, the record cooling water out temperature.
7MPa is adjusted and remained on to Seal cage pressure, and gas temperature is 250 ℃ in the control chamber.Change cooling water flow, measure the going into of cooling water, outlet temperature record data.
Close the heating system of Laboratory Furniture, continue the inner chamber 3 of cooling high pressure, when cavity temperature is reduced to 60 ℃ of left and right sides, close cooling water system 6.Let the cavity natural cooling,, discharge cooling water, during water outlet, take off suction pump again through suction pump when cavity temperature is cooled to about 50 ℃.10 connect pressurized air in the cooling water inlet, in cooling water channel, blow 15 minutes continuously.After stopping to blow, open end cap, observe whether also have residual moisture in the cooling jacket 5.If also have residual moisture in the cooling jacket 5, continue to blow until drying up moisture, writing time.
Four, the secondary seal switching tests of the pressurize of high temperature gas cooled reactor Main Coolant blower fan maintenance sealing experiment platform
Before Laboratory Furniture is installed, on each locking stud 12, foil gauge is installed, the quantity of stud 12 is 12 altogether, circumferentially evenly distributes, concrete mounting point such as Fig. 3.
After accomplishing test one; Cut off the oven power supply, stop to the heating of sealing experiment platform, observed temperature sensor and the 3rd suction port 4 place's pressure gauges; Through cooling water system 16 logical cooling waters; After treating that Laboratory Furniture cools to 30 ℃, open the suction valve of maintenance blanket gas branch road 23, regulate chamber pressure to 4MPa.
Adopt bolt tensioning jack to pull down Laboratory Furniture end cap stud, check according to bolt tensioning jack and calculate, need to use three bolt tensioning jacks can guarantee in drawing process, to be perfectly safe.1) the construction bolt extender 21, and bolt tensioning jack 21 symmetries are installed on 3 stud 12, when initially installing, make and reserve gap, the 10mm left and right sides between hydraulic cylinder and the bottom briquetting; 2) be forced into 30-35MPa for bolt tensioning jack 21.(at this moment, produce same between hydraulic cylinder and the briquetting and pressure; 3) 3 stud 12 under the bolt tensioning jack 21 are unclamped to maximum position; 4) symmetry, alternately unclamp other stud 12, getting loose until whole stud 12 puts in place.Attention:, check then whether 3 stud 12 under the bolt tensioning jack 21 also are locked again if in the 4th step, have the bolt pine not open.If then continue bolt tensioning jack is forced into 30MPa.Repetition 3), 4) step.
After stud 12 gets loose and puts in place, realize the switching of one-level maintenance sealing and secondary maintenance sealing, pressure-maintaining and heat-preservation 30 minutes.
Investigate the performance of secondary maintenance sealing through the leakage rate that adopts helium mass analyzer or drainage to measure and write down leakage path mouth 8, gland interface circumferencial direction.Repeat above-mentioned steps 6-8 time, record of the variation of secondary maintenance sealability with switching times.
To sum up, utilize the utility model to realize the experiments of sealing performance under the one-level maintenance seal operation state; Experiments of sealing performance after secondary maintenance sealing repeatedly engages; The cooling capacity analysis of coolant jacket; After cover plate and coolant jacket are removed, residual water Study on processing method in the maintenance sealing structure; Bottom chamber is under high pressure conditions, and one-level is overhauled the unloading process and the method research of sealing gland bolt; Temperature is mainly measured main shaft temperature, high pressure cavity temperature, low pressure chamber temperature, temperature variation vertically to the influence research of each sealing; The main shaft deflection is to the secondary seal Effect on Performance.
Because the pressurize tested maintenance sealing can also be applied in the industrial site that other need the pressurize maintenance, therefore, the testing apparatus that the utility model proposed can be used for serving the geometric ratio performance test with the maintenance seal arrangement of other occasions.
Claims (10)
1. the sealing experiment platform is overhauled in the pressurize of a high temperature gas cooled reactor Main Coolant blower fan; Comprise by the intermediate body member (13) of cooling jacket (5), ring-type and the following body (14) of peviform and fasten the Laboratory Furniture body of forming (15) successively; Fasten the back and form the closed inner chamber (3) that cooperates with pressurize maintenance seal arrangement; The one-level maintenance sealing of the corresponding pressurize maintenance in cooling jacket (5) and intermediate body member (13) connecting part seal arrangement; The secondary maintenance sealing of the corresponding pressurize maintenance in intermediate body member (13) and following body (14) connecting part seal arrangement, cooling jacket (5) is connected through bolt (12) with intermediate body member (13)
It is characterized in that, also comprise:
Cooling water system (16); The water system that comprises cooling jacket (5) and supply water for cooling jacket (5); Cooling water inlet (10), coolant outlet (6) and inner flow passage (11) are arranged on the cooling jacket (5); One end of cooling water inlet (10) is connected with water system, and the other end of cooling water inlet (10) is connected with an end of inner flow passage (11), and the other end of inner flow passage (11) is connected with coolant outlet (6);
High-pressure air source system (17); For the inner piston (1) of inner chamber (3) high-pressure air is provided through first suction port (7) and second suction port (9) respectively; High-pressure air source system (17) also is communicated with inner chamber (3) through the 3rd suction port (4); First suction port (7) and second suction port (9) are positioned on the cooling jacket (5), and on the body (14), cooling jacket (5) top had the leakage path mouth (8) of measuring leakage rate under the 3rd suction port (4) was positioned at;
Heating system (18) is positioned at body (14) bottom down;
Temperature measurement system (19); Form by a plurality of temperature transducers that are arranged in inner chamber (3); The distribution of temperature transducer should cover at least that the 3rd suction port (4), inner chamber (3) innerly wait horizontal positions with secondary maintenance sealing, inner chamber (3) is inner and one-levels maintenance sealing waits horizontal position and the inner pressurize of inner chamber (3) to overhaul horizontal positions such as seal arrangement top, is used for detecting pressurize and overhauls the distribution of seal arrangement main shaft temperature and cooling jacket (5) with rubber seal temperature on every side;
Bolt tension force measuring system (20); Form by bolt tensioning jack (21), foil gauge (22) and statical strain indicator; Wherein bolt tensioning jack (21) is arranged at stud (12) head, and foil gauge (22) is arranged at stud (12) on the inner polished rod part of cooling jacket (5).
2. the pressurize maintenance sealing experiment platform of high temperature gas cooled reactor Main Coolant blower fan according to claim 1 is characterized in that first suction port (7) and second suction port (9) are vertical hole.
3. the pressurize maintenance sealing experiment platform of high temperature gas cooled reactor Main Coolant blower fan according to claim 1 is characterized in that the 3rd suction port (4) is a horizontal hole.
4. the pressurize maintenance sealing experiment platform of high temperature gas cooled reactor Main Coolant blower fan according to claim 1 is characterized in that water ga(u)ge is located to be provided with in said cooling water inlet (10), and cooling water inlet (10) and coolant outlet (6) locate all to be provided with temperature transducer.
5. the pressurize maintenance sealing experiment platform of high temperature gas cooled reactor Main Coolant blower fan according to claim 1 is characterized in that said leakage path mouth (8) locates to be provided with gas flowmeter.
6. the pressurize maintenance sealing experiment platform of high temperature gas cooled reactor Main Coolant blower fan according to claim 1; It is characterized in that; Said high-pressure air source system (17) is divided into the maintenance blanket gas branch road (23) and the working seal gas branch road (24) of parallel connection; Maintenance blanket gas branch road (23) connects first suction port (7) and second suction port (9), and working seal gas branch road (24) connects the 3rd suction port (4).
7. the pressurize maintenance sealing experiment platform of high temperature gas cooled reactor Main Coolant blower fan according to claim 6 is characterized in that the air pressure of said maintenance blanket gas branch road (23) is 18MPa, and the air pressure of said working seal gas branch road (24) is at 4～7MPa.
8. the pressurize maintenance sealing experiment platform of high temperature gas cooled reactor Main Coolant blower fan according to claim 6 is characterized in that said maintenance blanket gas branch road (23) and working seal gas branch road (24) all have modulating valve and stop valve.
9. the pressurize maintenance sealing experiment platform of high temperature gas cooled reactor Main Coolant blower fan according to claim 1 is characterized in that pressurize maintenance seal arrangement supports through spring and is installed in the inner chamber (3).
10. the pressurize maintenance sealing experiment platform of high temperature gas cooled reactor Main Coolant blower fan according to claim 1 is characterized in that the quantity of stud (12) is 12, circumferentially evenly distributes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203615014U CN202266401U (en) | 2011-09-23 | 2011-09-23 | Pressure-maintaining overhauling sealing experiment table for main coolant fan of high-temperature gas cooled reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203615014U CN202266401U (en) | 2011-09-23 | 2011-09-23 | Pressure-maintaining overhauling sealing experiment table for main coolant fan of high-temperature gas cooled reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202266401U true CN202266401U (en) | 2012-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203615014U Expired - Fee Related CN202266401U (en) | 2011-09-23 | 2011-09-23 | Pressure-maintaining overhauling sealing experiment table for main coolant fan of high-temperature gas cooled reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202266401U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345591A (en) * | 2011-09-23 | 2012-02-08 | 清华大学 | Pressure-maintaining maintenance seal experiment table |
| US20150205004A1 (en) * | 2013-04-28 | 2015-07-23 | Guanzhou Institute Of Energy Conversion, Chinese Academy Of Sciences | Three-dimensional simulating device for the stratum stability in the natural hydrate exploitation |
-
2011
- 2011-09-23 CN CN2011203615014U patent/CN202266401U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345591A (en) * | 2011-09-23 | 2012-02-08 | 清华大学 | Pressure-maintaining maintenance seal experiment table |
| CN102345591B (en) * | 2011-09-23 | 2014-04-16 | 清华大学 | Pressure-maintaining maintenance seal experiment table |
| US20150205004A1 (en) * | 2013-04-28 | 2015-07-23 | Guanzhou Institute Of Energy Conversion, Chinese Academy Of Sciences | Three-dimensional simulating device for the stratum stability in the natural hydrate exploitation |
| US9841531B2 (en) * | 2013-04-28 | 2017-12-12 | Guangzhou Institute Of Energy Conversion, Chinese Academy Of Sciences | Three-dimensional simulating device for the stratum stability in the natural hydrate exploitation |
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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: 20120606 Termination date: 20150923 |
|
| EXPY | Termination of patent right or utility model |