CN109801721A - A kind of rupture disk protective device having warning function - Google Patents
A kind of rupture disk protective device having warning function Download PDFInfo
- Publication number
- CN109801721A CN109801721A CN201910017971.XA CN201910017971A CN109801721A CN 109801721 A CN109801721 A CN 109801721A CN 201910017971 A CN201910017971 A CN 201910017971A CN 109801721 A CN109801721 A CN 109801721A
- Authority
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- China
- Prior art keywords
- rupture disk
- sodium
- adapter tube
- upper flange
- lower flange
- Prior art date
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention belongs to nuclear reactor steam generator decompression protection technical fields, and in particular to a kind of rupture disk protective device for having warning function is tightly connected the adapter tube of the inside of the cavity constituted including being arranged in by top cover and shell；The adapter tube entrance of adapter tube bottom end is connected on the pedestal of shell bottom end, the leakage path of steam generator when as sodium-water reaction；Top is taken over to seal by replaceable rupture disk；Top cover top be equipped with the high-speed response thermocouple being connected with external alarm system, sodium leak detector, high temperature wire terminal, in superhigh temperature pressure transmitter any one or it is several；Shell is equipped with pressure relief vent, explosion occurs when internal gas pressure reaches setting value for rupture disk, any one or the several signals that alarm system is sent according to high-speed response thermocouple, sodium leak detector, high temperature wire terminal, superhigh temperature pressure transmitter generate alarm signal；Argon gas is filled in cavity.The very fast pressure release of device energy, maintenance cost is low, for ease of maintenaince replaces.
Description
Technical field
The invention belongs to nuclear reactor steam generator decompression protection technical fields, and in particular to one kind has warning function
Rupture disk protective device.
Background technique
Steam generator is the key equipment of the main heat-transfer system of sodium-cooled fast reactor.In sodium-cooled fast reactor operational process, steam
Generator longtime running high temperature, high pressure, high flow rate liquid wash away and the bad working environments of sodium environment under, it may occur however that water vapour
The leakage accident of pipeline.Once occurring, violent sodium-water reaction will occur for water and sodium for leakage, a large amount of heat be released, so that sodium water
Nearby temperature, pressure sharply increase reaction zone, cause the expansion and sprawling of leakage, not only damage to steam generator, sternly
The normal operation of sodium-cooled fast reactor can be threatened when weight.
Since sodium-water reaction is a quick release hydrogen, the rapidly explosive reaction boosted, occur in sodium-water reaction
Moment, quick release fall superpressure and reactant, are the effective measures to avoid greater disaster.Currently, various countries are directed to the accident work
The control technology that condition uses is all the same, i.e., installation blasting piece device realizes overpressure relief when sodium-water reaction occurs, but for tool
The technical solution and technical requirements of body are variant.
Meanwhile although blasting piece device can be realized overpressure relief, but can not be operator and steam generator
Main guard system instant alarm signal is provided.When rupture disk protects system explosion, operator, which is only capable of relying on, such as to steam
The passive approach such as the variation of vapour generator operating parameter, object collecting tank monitoring parameter of releasing variation determine the movement of rupture disk, accordingly
Judge that sodium-water reaction has occurred in steam generator.It is not fast enough that such case is easy accident emergency caused by causing because of operating lag
Speed, there are the potential risks of fault spread.
Summary of the invention
The object of the present invention is to provide a kind of rupture disk protective device for having warning function, when occurring in steam generator
Sodium-water reaction, after causing equipment superpressure, rupture disk protective device can timely explosion, quick pressure releasing, to realize that secondary circuit master is cold
But the integrality on system pressure boundary, avoiding greater disaster are simultaneously emitted by alarm signal.
To achieve the above objectives, the technical solution adopted by the present invention is that a kind of rupture disk protection dress for having warning function
It sets, for decompression protection when sodium-water reaction to occur in the steam generator in sodium-cooled fast reactor, wherein including being arranged by top cover
The adapter tube of the inside of the cavity constituted is tightly connected with shell；The adapter tube entrance of the bottom end of the adapter tube is connected to the shell
On the pedestal of bottom end, for being connected to the steam generator, the internal gas pressure of steam generator when as sodium-water reaction
The leakage path of power；The top of the adapter tube sealing is realized by one piece of replaceable rupture disk；The top cover top is close to institute
It states the position above rupture disk and is equipped with high-speed response thermocouple, sodium leak detector, the high temperature being connected with external alarm system
In conductor terminal, superhigh temperature pressure transmitter any one or it is any several；It is additionally provided on the shell for being connected to pressure release
The pressure relief vent of equipment, when the internal gas pressure reaches setting value explosion can occur for the rupture disk, so that gas
Enter the cavity by the adapter tube, and enters the pressure relief equipment through the pressure relief vent；When the high-speed response thermoelectricity
When the temperature occasionally detected reaches set temperature or when the reactant of sodium-water reaction contacts the sodium leak detector or
What person detected when the reactant of sodium-water reaction contacts the high temperature wire terminal or when the superhigh temperature pressure transmitter
Pressure, which reaches alarm system when setting pressure, can issue alarm signal；Argon gas is filled in the cavity.
Further, the top cover bottom end is equipped with the first upper flange, and the housing top end is equipped with the first lower flange, the top cover
It is tightly connected with the shell by first upper flange and first lower flange and constitutes the cavity.
Further, it is equipped with the second lower flange and the second upper flange on the top of the adapter tube, the rupture disk passes through described
Second lower flange and second upper flange are sealingly disposed in the top of the adapter tube.
Further, the rupture disk is arranged on clamper by welded seal, constitutes blasting piece device, the rupture disk
Device is sealingly disposed in the top of the adapter tube by second lower flange and second upper flange；The blasting piece device
Sealing is realized by the second taper washer between second lower flange, or passes through second taper washer and quoit
Realize dual-seal, the quoit is 0 type quoit or c-type quoit；The blasting piece device and second upper flange
Between can by metal washer seal or not seal.
Further, sealing is realized by the first taper washer between first upper flange and first lower flange；?
First upper flange of the first taper washer periphery is connected with the bolt of first lower flange, is equipped with plain cushion
Circle, realizes the further sealing between first upper flange and first lower flange, and the bolt passes through the plain washer
Connect first upper flange and first lower flange.
Further, spacer flanger is equipped between second lower flange and second upper flange, three flanges pass through
It is bolted, the rupture disk is arranged between second upper flange and the spacer flanger；The spacer flanger with it is described
The part of the side edge touching of rupture disk is equipped with annular groove, passes through the real by pressure limit of the convex portion of the annular groove and the rupture disk
End sealing of the existing rupture disk to the adapter tube；Or metal gasket is set between the spacer flanger and the rupture disk
Circle realizes the rupture disk to the end sealing of the adapter tube.
Further, sealing is realized by the 4th taper washer between the spacer flanger and second lower flange.
Further, sealing is realized by third taper washer between first upper flange and first lower flange.
It further, further include the low spot row's sodium pipe of setting on the base, the low spot row sodium pipe is used for external container
It is tightly connected the connection for constituting cavity with first upper flange and first lower flange, the liquid in the cavity is discharged
Sodium.
The beneficial effects of the present invention are:
1. big sodium-water reaction can occur in steam generator, after causing equipment superpressure, very fast pressure release prevents accident from expanding
Bigization.
2. the rupture disk protective device processing for having warning function is low with maintenance cost, for ease of maintenaince and replace.
Detailed description of the invention
Fig. 1 is the signal for the rupture disk protective device that A type described in the specific embodiment of the invention has warning function
Figure；(arrow is gas aerial drainage direction in figure)
Fig. 2 is the signal for the rupture disk protective device that Type B described in the specific embodiment of the invention has warning function
Figure；(arrow is gas aerial drainage direction in figure)
In figure: 1- pedestal, 2- nameplate, 3- rupture disk label, 4- shell, the first lower flange of 5-, the first taper washer of 6-, 7-
First upper flange, 8- top cover, 9- bolt, 10- nut, 11- gasket, the second upper flange of 12-, 13- blasting piece device, 14- second
Taper washer, the second lower flange of 15-, 16- adapter tube, 17- rupture disk, 18- top cover suspension hook, 19- pressure relief vent, 20- low spot arrange sodium
Pipe, 21- adapter tube entrance, 22- plain washer, 23- third taper washer, the 4th taper washer of 24-, 25- spacer flanger, 26- sodium are let out
Leak detector, 27- high temperature wire terminal, 28- high-speed response thermocouple, 29- superhigh temperature pressure transmitter, 30- alarm system.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
A kind of rupture disk protective device having warning function provided by the invention, for the steam generation in sodium-cooled fast reactor
The decompression protection of device, including shell 4, top cover 8, adapter tube 16, rupture disk 17, sodium leak detector 26, high temperature wire terminal 27, height
The components such as speed response thermocouple 28, superhigh temperature pressure transmitter 29, alarm system 30.
As shown in Figure 1 and Figure 2, top cover 8 is tubular, and end sealing, bottom end is equipped with the first upper flange 7；4 top of shell is equipped with
First lower flange 5, bottom end are equipped with pedestal 1.Top cover 8 and shell 4 pass through the first upper flange 7 and the first lower flange 5 sealed connection structure
At cavity.
Adapter tube 16 is vertically arranged in top cover 8 and shell 4 is tightly connected the inside of the cavity constituted；The bottom end of adapter tube 16 connects
Tube inlet 21 is connected on the pedestal 1 of the bottom end of shell 4, for being connected to steam generator, so that adapter tube 16 is used as steam generation
The leakage path of internal gas pressure in device when generation sodium-water reaction；One piece of rupture disk 17 is arranged in the end sealing of adapter tube 16；
The pressure relief vent 19 for being connected to pressure relief equipment is additionally provided on shell 4；Rupture disk 17 is a thin rounded flakes, in pressure leak process,
Rupture disk 17 can reach setting value (upper limit feasible value of rupture disk) Shi Fasheng explosion in internal gas pressure, so that gas passes through
Adapter tube 16 is crossed into cavity, and enter pressure relief equipment through pressure relief vent 19.
The second lower flange 15 and the second upper flange 12, the top of the second lower flange 15 and adapter tube 16 are equipped on the top of adapter tube 16
To be tightly connected between end, rupture disk 17 is sealingly disposed in the top of adapter tube 16 by the second lower flange 15 and the second upper flange 12
End.
Be additionally provided with low spot row's sodium pipe 20 on pedestal 1, low spot arrange sodium pipe 20 for external container and the first upper flange 7 and
First lower flange 5 is tightly connected the connection for constituting cavity, and discharge enters the Liquid Sodium in cavity during the pressure relief process.
The top cover suspension hook 18 of 8 outer surface of top cover is used for lifting appliance when rupture disk protective device is installed and is overhauled.
The sodium leakage being connected with external alarm system 30 is equipped in position of 8 top of top cover above rupture disk 17 to visit
Survey device 26, high temperature wire terminal 27, high-speed response thermocouple 28, in superhigh temperature pressure transmitter 29 any one or it is any
It is several, when selecting any several in these four detection devices, the report that the different detection device of these types provides can be passed through
Alert signal realizes multiple alarm.Argon gas is filled in the cavity of rupture disk protective device, cavity refers in rupture disk protective device
Other spaces other than 16 inner space of adapter tube, that is, the non-pressure side of rupture disk 17.Sodium leak detector 26, high temperature
It is conductor terminal 27, high-speed response thermocouple 28, any one or more so that alarm system in superhigh temperature pressure transmitter 29
30 issue alarm signal, and explosion has occurred in all expression rupture disks 17.It in actual use, can be in order to improve system reliability
Multiple sodium leak detectors 26, high temperature wire terminal 27, high-speed response thermocouple 28, superelevation are arranged in the non-pressure side of rupture disk 17
Temperature and pressure power transmitter 29, while making these sodium leak detectors 26, high temperature wire terminal 27, high-speed response thermocouple 28, superelevation
29 parallel connection of temperature and pressure power transmitter is connected into alarm system 30.
The alarm principle of four kinds of detection devices is as follows:
Sodium leak detector 26,
Rupture disk protective device is argon gas in the non-pressure side space of rupture disk 17, is in non-conductive shape in non-explosion
State, sodium leak detector 26 is in stand-by state at this time, and alarm system 30 is not alarmed.When sodium-water reaction occurs and causes superpressure
When, the rupture disk explosion of rupture disk protective device, high-temperature sodium water reaction product will be released by leakage path, so that non-pressure side
Space is in conduction state.In response to this, one or more sodium leak detectors are set in the non-pressure side of rupture disk 17
26, once overpressure relief occurs and causes for sodium-water reaction, high-temperature sodium water reaction product sprays and contacts sodium leak detector 26, benefit
With the electric conductivity of sodium, warning circuit will be connected, and alarm signal occurs for alarm system 30.
High temperature wire terminal 27,
Rupture disk protective device is argon gas in the non-pressure side space of rupture disk 17, is in non-conductive shape in non-explosion
State, high temperature wire terminal 27 is off-state at this time, and alarm system 30 is not alarmed.When sodium-water reaction occurs and causes superpressure,
17 explosion of rupture disk of rupture disk protective device, high-temperature sodium water reaction product are let out by the leakage path of rupture disk protective device
It puts, so that the space of the non-pressure side of rupture disk 17 is in conduction state.In response to this, in the non-pressure side of rupture disk 17
One or more high temperature wire terminals 27 are set, connect warning circuit thereafter.Once overpressure relief occurs and causes for sodium-water reaction,
High-temperature sodium water reaction product sprays and contacts high temperature wire terminal 27, and warning circuit will be connected, and alarm signal occurs for alarm system 30
Number.
High-speed response thermocouple 28,
For rupture disk protective device in non-explosion, the non-pressure side temperature of rupture disk 17 is a stationary value (room temperature or 250
DEG C, according to the environment that rupture disk protective device is installed, temperature difference under varying environment), alarm system 30 is not alarmed.Work as sodium
When water reaction occurs and causes superpressure, 17 explosion of rupture disk of rupture disk protective device, high-temperature sodium water reaction product (about 500 DEG C)
It will be released by the leakage path of rupture disk protective device, so that the non-pressure side temperature moment of rupture disk 17 increases rapidly.Needle
To such case, one or more high-speed response thermocouples 28 are set in the non-pressure side of rupture disk 17, connects temperature thereafter and adopts
Collection and alarm system 30.When system acquisition is to when having some or 28 temperature moment of multiple high-speed response thermocouples to increase, alarm is
System 30 i.e. output alarm signal；
Superhigh temperature pressure transmitter 29,
At work, superhigh temperature pressure medium is charged superhigh temperature pressure transmitter 29 by the high viscosity high temperature of superhigh temperature resistant
Superhigh temperature pressure medium is transmitted to pressure, differential pressure transmitter ontology by liquid, realizes pressure transmitting and measurement.The structure, which has, to be surveyed
The features such as accuracy of measurement is high, the response time is short, high reliablity.Rupture disk protective device in non-explosion, rupture disk 17 it is non-pressure
Lateral pressure is that (0.05MPa or normal pressure, according to the environment that rupture disk protective device is installed, under varying environment, pressure has been for stationary value
Difference), alarm system 30 is not alarmed.When sodium-water reaction occurs and causes superpressure, the rupture disk 17 of rupture disk protective device is quick-fried
Broken, high-temperature sodium water reaction product will be released by the leakage path of rupture disk protective device, so that the non-pressure side of rupture disk 17
Pressure moment increases rapidly.In response to this, one or more superhigh temperature pressure are arranged in the non-pressure side of rupture disk 17 to become
Device 29 is sent, connects pressure acquisition and alarm system 30 thereafter.When system acquisition is to when having the raising of pressure transmitter moment, alarm is
System 30 i.e. output alarm signal.
In addition, according to actual needs, the rupture disk protective device provided by the present invention for having warning function include A type and
Type B, specific difference are as follows:
A type has the rupture disk protective device of warning function, as shown in Figure 1,
Rupture disk 17 is arranged on clamper by welded seal, constitutes blasting piece device 13, and blasting piece device 13 passes through
Second lower flange 15 and the second upper flange 12 are sealingly disposed in the top of adapter tube 16；Blasting piece device 13 and the second lower flange 15 it
Between sealing realized by the second taper washer 14, or dual-seal, metal are realized by the second taper washer 14 and quoit
Circle is O-shaped quoit or c-type quoit；Between blasting piece device 13 and the second upper flange 12 can by metal washer seal or not
It seals.
Sealing is realized by the first taper washer 6 between first upper flange 7 and the first lower flange 5；In the first taper washer 6
First upper flange 7 of periphery connect with the bolt of the first lower flange 5, is equipped with plain washer 22, the first upper flange 7 of realization and the
Further sealing between one lower flange 5, bolt pass through plain washer 22 and connect the first upper flange 7 and the first lower flange 5.
After to be blasted 17 explosions, can integral replacing blasting piece device 13, do not need cutting pipeline.
Type B has the rupture disk protective device of warning function, as shown in Fig. 2,
Spacer flanger 25 is equipped between the second lower flange 15 and the second upper flange 12, three flanges are bolted,
Rupture disk 17 is arranged between the second upper flange 12 and spacer flanger 25；What the side edge of spacer flanger 25 and rupture disk 17 was touched
Part is equipped with annular groove, realizes that the top of 17 butt tube 16 of rupture disk is close by annular groove and being limited by pressure for the convex portion of rupture disk 17
Envelope；Or the end sealing that metal washer realizes 17 butt tube 16 of rupture disk is set between spacer flanger 25 and rupture disk 17.
Sealing is realized by the 4th taper washer 24 between spacer flanger 25 and the second lower flange 15.
Sealing is realized by third taper washer 23 between first upper flange 7 and the first lower flange 5.
After to be blasted 17 explosions, rupture disk 17 can be directly replaced, does not need cutting pipeline.
Device of the present invention is not limited to embodiment described in specific embodiment, those skilled in the art according to
Technical solution of the present invention obtains other embodiments, also belongs to the scope of the technical innovation of the present invention.
Claims (9)
1. a kind of rupture disk protective device for having warning function, anti-for sodium water to occur in the steam generator in sodium-cooled fast reactor
Seasonable decompression protection, it is characterized in that: including setting in the inside for being tightly connected the cavity constituted by top cover (8) and shell (4)
Adapter tube (16)；The adapter tube entrance (21) of the bottom end of the adapter tube (16) is connected to the pedestal (1) of the bottom end of the shell (4)
On, for being connected to the steam generator, when as sodium-water reaction the internal gas pressure of the steam generator release it is logical
Road；The top of the adapter tube (16) sealing is realized by one piece of replaceable rupture disk (17)；Top cover (8) top is close to institute
It states the position above rupture disk (17) and is equipped with high-speed response thermocouple (28), the sodium leakage being connected with external alarm system (30)
Detector (26), high temperature wire terminal (27), in superhigh temperature pressure transmitter (29) any one or it is any several；It is described outer
The pressure relief vent (19) for being connected to pressure relief equipment is additionally provided on shell (4), the rupture disk (17) can be in the internal gas
When reaching setting value explosion occurs for pressure, so that gas enters the cavity by the adapter tube (16), and goes out through the pressure release
Mouth (19) enters the pressure relief equipment；When the temperature that the high-speed response thermocouple (28) is detected reaches set temperature or
Described in person contacts when the reactant of sodium-water reaction contacts sodium leak detector (26) or when the reactant of sodium-water reaction
When high temperature wire terminal (27) or when the pressure that the superhigh temperature pressure transmitter (29) is detected reaches setting pressure when institute
Alarm signal can be issued by stating alarm system (30)；Argon gas is filled in the cavity.
2. having the rupture disk protective device of warning function as described in claim 1, it is characterized in that: the top cover (8) bottom end
Equipped with the first upper flange (7), shell (4) top is equipped with the first lower flange (5), and the top cover (8) and the shell (4) are logical
It crosses first upper flange (7) and first lower flange (5) is tightly connected and constitutes the cavity.
3. having the rupture disk protective device of warning function as claimed in claim 2, it is characterized in that: in the adapter tube (16)
Top be equipped with the second lower flange (15) and the second upper flange (12), the rupture disk (17) pass through second lower flange (15) and
Second upper flange (12) is sealingly disposed in the top of the adapter tube (16).
4. having the rupture disk protective device of warning function as claimed in claim 3, it is characterized in that: the rupture disk (17) is logical
It crosses welded seal to be arranged on clamper, constitute blasting piece device (13), the blasting piece device (13) passes through under described second
Flange (15) and second upper flange (12) are sealingly disposed in the top of the adapter tube (16)；The blasting piece device (13) and
Sealing is realized by the second taper washer (14) between second lower flange (15), or passes through second taper washer
(14) and quoit realizes dual-seal, and the quoit is 0 type quoit or c-type quoit；The blasting piece device (13)
It can be sealed or not sealed by metal washer between second upper flange (12).
5. having the rupture disk protective device of warning function as claimed in claim 4, it is characterized in that: first upper flange
(7) sealing is realized by the first taper washer (6) between first lower flange (5)；First taper washer (6) outside
First upper flange (7) enclosed connects with the bolt of first lower flange (5), is equipped with plain washer (22), realizes institute
The further sealing between the first upper flange (7) and first lower flange (5) is stated, the bolt passes through the plain washer (22)
Connect first upper flange (7) and first lower flange (5).
6. having the rupture disk protective device of warning function as claimed in claim 3, it is characterized in that: in second lower flange
(15) spacer flanger (25) are equipped between second upper flange (12), three flanges are bolted, the rupture disk
(17) it is arranged between second upper flange (12) and the spacer flanger (25)；The spacer flanger (25) and the explosion
The part of the side edge touching of piece (17) is equipped with annular groove, passes through being pressed for the annular groove and the convex portion of the rupture disk (17)
Limit realizes the rupture disk (17) to the end sealing of the adapter tube (16)；Or in the spacer flanger (25) and the explosion
Metal washer is arranged between piece (17) realizes the rupture disk (17) to the end sealing of the adapter tube (16).
7. having the rupture disk protective device of warning function as claimed in claim 6, it is characterized in that: the spacer flanger (25)
Sealing is realized by the 4th taper washer (24) between second lower flange (15).
8. having the rupture disk protective device of warning function as claimed in claim 7, it is characterized in that: first upper flange
(7) sealing is realized by third taper washer (23) between first lower flange (5).
9. having the rupture disk protective device of warning function as described in claim 1, it is characterized in that: further including being arranged described
Low spot on pedestal (1) arranges sodium pipe (20), low spot row sodium pipe (20) for external container and first upper flange (7) and
First lower flange (5) is tightly connected the connection for constituting cavity, and the Liquid Sodium in the cavity is discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910017971.XA CN109801721A (en) | 2019-01-09 | 2019-01-09 | A kind of rupture disk protective device having warning function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910017971.XA CN109801721A (en) | 2019-01-09 | 2019-01-09 | A kind of rupture disk protective device having warning function |
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| Publication Number | Publication Date |
|---|---|
| CN109801721A true CN109801721A (en) | 2019-05-24 |
Family
ID=66556916
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| CN201910017971.XA Pending CN109801721A (en) | 2019-01-09 | 2019-01-09 | A kind of rupture disk protective device having warning function |
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