CN106765837B - A kind of nuclear power station owner chimney breast is flexible coupling the replacing options of pipeline section - Google Patents
A kind of nuclear power station owner chimney breast is flexible coupling the replacing options of pipeline section Download PDFInfo
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- CN106765837B CN106765837B CN201710079611.3A CN201710079611A CN106765837B CN 106765837 B CN106765837 B CN 106765837B CN 201710079611 A CN201710079611 A CN 201710079611A CN 106765837 B CN106765837 B CN 106765837B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
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Abstract
A kind of nuclear power station owner chimney breast be flexible coupling pipeline section replacing options the following steps are included: building air-tightness mistress (3) and air-tightness interior room (4) around main chimney breast on the roof of air draft confluence room (1)；Air-tightness interior room (4) setting is internal in air-tightness mistress (3), and the pipeline section that is flexible coupling is in air-tightness interior room (4) inside；It is installed on air-tightness interior room (4) for aspirating the air between air-tightness mistress (3) and air-tightness interior room (4) and discharging it into the internal blower (2) of air-tightness interior room (4)；Start blower, so that the space between air-tightness mistress (3) and air-tightness interior room (4) is in negative pressure state relative to air-tightness interior room (4) and external environment, the radioactive emission for guaranteeing that air-tightness interior room (4) leak out is sucked go back to air-tightness interior room (4), and radioactive emission is prevented to be diffused into external environment；Then replacement is flexible coupling pipeline section (6).Technical solution of the present invention is ingenious, practical.
Description
Technical field
It is flexible coupling the replacement side of pipeline section the present invention relates to technical field of nuclear power more particularly to a kind of nuclear power station owner chimney breast
Method.
Background technique
As shown in Figure 1, nuclear power station owner's chimney breast includes upper pipeline section 5 and lower tube section；Upper pipeline section 5 is used to arrange external environment
Radioactive emission is lowerd, lower tube section is connected with the air draft of upstream confluence room 1；By being flexible coupling between upper pipeline section 5 and lower tube section
Pipeline section 6 is connected；Herein, the pipeline section 6 that is flexible coupling is intended to reduce main chimney when extraneous ambient wind pressure acts on lower stress to nuclear power station
The influence of nuclear island factory building structure.
When nuclear power station is either in normal operating condition or is in stoppage in transit overhaul state, main chimney, which requires investment, to be made
With this causes at present not replacing the pipeline section that is flexible coupling between upper pipeline section and lower tube section；Specifically, as shown in Figure 1,
Upper pipeline section 5 is used to discharge treated low-activity exhaust gas in specified altitude；It is as directly removed the pipeline section 6 that is flexible coupling, then low to put
Penetrating property exhaust gas directly will put idle discharge from removal position, so that the height of release of low-activity exhaust gas is not able to satisfy specified altitude
Requirement, this may cause the radiation risk of site personnel 7.
Summary of the invention
The present invention in view of the above technical problems, proposes a kind of nuclear power station owner chimney breast and is flexible coupling the replacement side of pipeline section
Method.
Technical solution proposed by the present invention is as follows:
It is flexible coupling the replacing options of pipeline section the invention proposes a kind of nuclear power station owner chimney breast, nuclear power station owner's chimney breast
Including upper pipeline section and lower tube section；Upper pipeline section is used for extraneous environmental emission radioactive emission, lower tube section and air draft confluence room phase
Even；It is connected between upper pipeline section and lower tube section by the pipeline section that is flexible coupling；The replacing options the following steps are included:
Step S1, it is built in air-tightness mistress and air-tightness on the roof in air draft confluence room around main chimney breast
Room；Wherein, chamber interior is arranged outside air-tightness in air-tightness interior room, and the pipeline section that is flexible coupling is in chamber interior in air-tightness；Then,
Installation is for aspirating the air between air-tightness mistress and air-tightness interior room and discharging it into air-tightness in air-tightness interior room
The blower of chamber interior；
Step S2, start blower, so that the space between air-tightness mistress and air-tightness interior room is in negative pressure state；Then
Replace the pipeline section that is flexible coupling.
In the above-mentioned replacing options of the present invention, it is provided with Spence door in air-tightness interior room, is provided on air-tightness mistress outer
Room door；Step S2 further include:
In starting blower, so as to make work after the space between air-tightness mistress and air-tightness interior room is in negative pressure state
Personnel have dressed Radiation proof dress, then successively open and close mistress's door and Spence door conveniently to enter air-tightness interior room, then
Replace the pipeline section that is flexible coupling；
Later, it opens staff successively and closes Spence door and mistress's door conveniently to leave air-tightness mistress；Then
Close blower.
It further include between air-tightness mistress and air-tightness interior room in step sl in the above-mentioned replacing options of the present invention
Build room in air-tightness；Blower is for aspirating the air in air-tightness between room and air-tightness interior room and discharging it into air-tightness
Chamber interior；
Step S2 includes: starting blower, so that the space in air-tightness between room and air-tightness interior room is in negative pressure state；
Then the pipeline section that is flexible coupling is replaced.
In the above-mentioned replacing options of the present invention, it is provided with Spence door in air-tightness interior room, is provided on air-tightness mistress outer
Room door；Middle room door is provided in air-tightness on room；Step S2 further include:
In starting blower, so as to make work after the space in air-tightness between room and air-tightness interior room is in negative pressure state
Personnel have dressed Radiation proof dress, then open and close conveniently mistress's door, middle room door and Spence door successively to enter in air-tightness
Then the pipeline section that is flexible coupling is replaced in room；
Later, it opens staff successively and closes Spence door, middle room door and mistress's door conveniently to leave outside air-tightness
Room；It is then shut off blower.
In the above-mentioned replacing options of the present invention, in step s 2, when starting blower, room and air-tightness interior room in air-tightness
Between space air pressure be greater than 7.5kPa.
In the above-mentioned replacing options of the present invention, between air-tightness interior room and main chimney breast and air-tightness interior room and air draft
Seam areas between the roof in confluence room is coated with radiotolerant sealant；Between air-tightness mistress and main chimney breast and
Seam areas between air-tightness mistress and the roof in air draft confluence room is also coated with radiotolerant sealant；Air-tightness interior room and
Link position between blower is also coated with radiotolerant sealant；In air-tightness between room and main chimney breast and in air-tightness
Seam areas between room and the roof in air draft confluence room is also coated with radiotolerant sealant.
In the above-mentioned replacing options of the present invention, air-tightness interior room is air-tightness tent, movable plank house, concrete room or guarantor
Warm assembly room；Air-tightness mistress is air-tightness tent, movable plank house, concrete room or keeps the temperature assembled room；Room is in air-tightness
Air-tightness tent, movable plank house, concrete room keep the temperature assembled room.
In the above-mentioned replacing options of the present invention, in step s 2, when starting blower, air-tightness mistress and air-tightness interior room
Between space air pressure be greater than 7.5kPa.
In the above-mentioned replacing options of the present invention, between air-tightness interior room and main chimney breast and air-tightness interior room and air draft
Seam areas between the roof in confluence room is coated with radiotolerant sealant；Between air-tightness mistress and main chimney breast and
Seam areas between air-tightness mistress and the roof in air draft confluence room is also coated with radiotolerant sealant；Air-tightness interior room and
Link position between blower is also coated with radiotolerant sealant.
Nuclear power station owner's chimney breast of the invention be flexible coupling pipeline section replacing options by control be flexible coupling pipeline section nearby ring
The air pressure in border ensure that radioactive emission is not revealed.Nuclear power station owner's chimney breast of the invention is flexible coupling the replacing options skill of pipeline section
Art scheme is ingenious, practical.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 shows the schematic diagram of existing nuclear power station owner chimney breast；
It is flexible coupling the signal of the replacing options of pipeline section Fig. 2 shows nuclear power station owner's chimney breast of first embodiment of the invention
Figure；
Nuclear power station owner's chimney breast that Fig. 3 shows second embodiment of the invention be flexible coupling pipeline section replacing options signal
Figure.
Specific embodiment
It stops transport greatly the technical problems to be solved by the present invention are: nuclear power station is either in normal operating condition or is in
When repairing state, main chimney requires to come into operation, this causes at present can not be to the pipeline section that is flexible coupling between upper pipeline section and lower tube section
It is replaced.The technical thought that the present invention is proposed with regard to the technical problem is: being flexible coupling, pipe section exterior sets gradually air-tightness
Interior room and air-tightness mistress, and taken out the air between air-tightness interior room and air-tightness mistress to air-tightness interior room by blower
It inhales；In this way, when dismounting replacement is flexible coupling pipeline section, if being entered in air-tightness by the radioactive emission for the pipeline section leakage that is flexible coupling
Between room and air-tightness mistress, which can also be aspirated by blower and return in air-tightness interior room, to ensure that radiation
Property exhaust gas is not revealed.Nuclear power station owner's chimney breast of the invention be flexible coupling pipeline section replacing options technical solution it is ingenious, practicability
By force.
In order to keep technical purpose of the invention, technical solution and technical effect apparent, in order to art technology
Personnel understand and implement the present invention, and the present invention will be further described in detail below in conjunction with the accompanying drawings and the specific embodiments.
First embodiment
As shown in Fig. 2, being flexible coupling the replacement of pipeline section Fig. 2 shows nuclear power station owner's chimney breast of first embodiment of the invention
The schematic diagram of method.Nuclear power station owner's chimney breast includes upper pipeline section 5 and lower tube section；Upper pipeline section 5 is for putting extraneous environmental emission
Penetrating property exhaust gas, lower tube section are connected with the air draft of upstream confluence room 1；Pass through 6 phase of pipeline section that is flexible coupling between upper pipeline section 5 and lower tube section
Even；Nuclear power station owner's chimney breast be flexible coupling pipeline section replacing options the following steps are included:
Step S1, it is built in air-tightness mistress 3 and air-tightness on the roof in air draft confluence room 1 around main chimney breast
Room 4；Wherein, air-tightness interior room 4 is arranged inside air-tightness mistress 3, and the pipeline section that is flexible coupling is in inside air-tightness interior room 4；
Then, it installs in air-tightness interior room 4 for aspirating the air between air-tightness mistress 3 and air-tightness interior room 4 and discharging it into
Blower 2 inside air-tightness interior room 4；
Step S2, start blower, so that the space between air-tightness mistress 3 and air-tightness interior room 4 is in negative pressure state；So
The pipeline section 6 that is flexible coupling is replaced afterwards.
In above-mentioned replacing options, start blower and start replacement be flexible coupling pipeline section 6 when, be drawn into air-tightness interior room 4
Internal air a part can be discharged in external environment by the gap at the pipeline section 6 that is flexible coupling by main chimney breast；Certainly,
Since after starting blower, air-tightness interior room 4 can be in barotropic state, part radioactive emission may pass through air-tightness interior room
Gap on 4 is flowed into the space between air-tightness mistress 3 and air-tightness interior room 4；But due to there is blower, this part
Radioactive emission can also be sucked and return to inside air-tightness interior room 4, to ensure that radioactive emission is not revealed.
In step sl, air-tightness interior room 4 can be air-tightness tent, movable plank house, concrete room or similar freezer
Keep the temperature assembled room etc.；Between the air-tightness interior room 4 and main chimney breast and roof of air-tightness interior room 4 and air draft confluence room 1
Between seam areas need to coat radiotolerant sealant, Spent Radioactive gas leakage is reduced or avoided.Similarly, air-tightness
Mistress 3 can also be air-tightness tent, movable plank house, concrete room or heat preservation assembly room of similar freezer etc.；Air-tightness mistress 3
Seam areas between main chimney breast and between air-tightness mistress 3 and the roof in air draft confluence room 1 also needs to coat resistance to
The sealant of irradiation, Spent Radioactive gas leakage is reduced or avoided.In addition, the connection position between air-tightness interior room 4 and blower 2
It sets and is also coated with radiotolerant sealant, Spent Radioactive gas leakage is reduced or avoided.
Further, it is provided with Spence door 8 in air-tightness interior room 4, mistress's door 9 is provided on air-tightness mistress 3；Spence door
8 can be air-tightness door or sealed door；Similarly, mistress's door 9 can also be air-tightness door or sealed door.By air-tightness door or closed
Door, is also used for that the leakage of radioactive emission is reduced or avoided.
Step S2 further include:
In starting blower, so as to make work after the space between air-tightness mistress 3 and air-tightness interior room 4 is in negative pressure state
Make personnel 7 and dressed Radiation proof dress, then successively opens and close mistress's door 9 and Spence door 8 conveniently to enter air-tightness interior room
4, then replace the pipeline section 6 that is flexible coupling；
Later, it opens staff 7 successively and closes Spence door 8 and mistress's door 9 conveniently to leave air-tightness mistress 3；
It is then shut off blower 2.
According to convention, when air pressure is lower than 7.5kPa, human body can generate a series of physiological changes；When air pressure is lower than 5.4kPa
When, human body just will appear adjustment problem.Therefore, in the present embodiment, when starting blower, in air-tightness mistress 3 and air-tightness
The air pressure in the space between room 4 is greater than 7.5kPa.
Second embodiment
The replacement of pipeline section as shown in figure 3, nuclear power station owner's chimney breast that Fig. 3 shows second embodiment of the invention is flexible coupling
The schematic diagram of method.Nuclear power station owner's chimney breast includes upper pipeline section 5 and lower tube section；Upper pipeline section 5 is for putting extraneous environmental emission
Penetrating property exhaust gas, lower tube section are connected with the air draft of upstream confluence room 1；Pass through 6 phase of pipeline section that is flexible coupling between upper pipeline section 5 and lower tube section
Even；Nuclear power station owner's chimney breast be flexible coupling pipeline section replacing options the following steps are included:
Step S1, air-tightness mistress 3 is built, in air-tightness around main chimney breast on the roof in air draft confluence room 1
Room 10 and air-tightness interior room 4；Wherein, air-tightness interior room 4 is arranged inside air-tightness mistress 3, and the pipeline section that is flexible coupling is in gas
Inside close property interior room 4；Room 10 is arranged between air-tightness interior room 4 and air-tightness mistress 3 in air-tightness；Then, in air-tightness
Installation is for aspirating the air in air-tightness between room 10 and air-tightness interior room 4 and discharging it into inside air-tightness interior room 4 on room 4
Blower 2；
Step S2, start blower, so that the space in air-tightness between room 10 and air-tightness interior room 4 is in negative pressure state；
Then the pipeline section 6 that is flexible coupling is replaced.
In above-mentioned replacing options, start blower and start replacement be flexible coupling pipeline section 6 when, be drawn into air-tightness interior room 4
Internal air a part can be discharged in external environment by the gap at the pipeline section 6 that is flexible coupling by main chimney breast；Certainly,
Since after starting blower, air-tightness interior room 4 can be in barotropic state, part radioactive emission may pass through air-tightness interior room
Gap on 4 is flowed into the space in air-tightness mistress 3 and air-tightness between room 10；But due to there is blower, this portion
Divide radioactive emission that can also be sucked to return to inside air-tightness interior room 4, to ensure that radioactive emission is not revealed.It is soft replacing
After connecting pipeline section 6, air-tightness interior room 4 is it is also possible to residual fraction radioactive emission, at this point, passing through room 10 in air-tightness and airtight
Property mistress 3 barrier, which would not reveal, and pass through when can wait the pipeline section 6 until replacement next time is flexible coupling
Main chimney breast is discharged in external environment.In the present embodiment, due to there is suction of the blower to air, in the pipeline section 6 that is flexible coupling
After replacement, and when stopping blower, the air pressure in air-tightness inside room 10 can be in low pressure state；Over time, gas
Air in close property mistress 3 and air-tightness between room 10 can balance the air pressure in air-tightness inside room 10.Room 10 in air-tightness
It can be air-tightness tent, movable plank house, concrete room or heat preservation assembly room of similar freezer etc.；Room 10 and main cigarette in air-tightness
Seam areas between chimney pipeline and in air-tightness between room 10 and the roof in air draft confluence room 1 also needs to coat radiotolerant
Sealant, Spent Radioactive gas leakage is reduced or avoided.It is appreciated that in the present embodiment, the air-tightness of air-tightness mistress 3
Effect reaches most preferably, can be permanent construction.
It is provided with Spence door 8 in air-tightness interior room 4, mistress's door 9 is provided on air-tightness mistress 3；In air-tightness on room 10
It is provided with middle room door 11；Middle room door 11 can be air-tightness door or sealed door；
Further, step S2 further include:
In starting blower, so as to make work after the space in air-tightness between room 10 and air-tightness interior room 4 is in negative pressure state
Make personnel 7 and dressed Radiation proof dress, then opens and close conveniently mistress's door 9, middle room door 11 and Spence door 8 successively to enter gas
Then close property interior room 4 replaces the pipeline section 6 that is flexible coupling；
Later, it opens staff 7 successively and closing Spence door 8, middle room door 11 and mistress's door 9 is airtight to leave conveniently
Property mistress 3；It is then shut off blower 2.
According to convention, when air pressure is lower than 7.5kPa, human body can generate a series of physiological changes；When air pressure is lower than 5.4kPa
When, human body just will appear adjustment problem.Therefore, in the present embodiment, when starting blower, in air-tightness in room 10 and air-tightness
The air pressure in the space between room 4 is greater than 7.5kPa.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (9)
- The replacing options of pipeline section 1. a kind of nuclear power station owner chimney breast is flexible coupling, nuclear power station owner's chimney breast include upper pipeline section (5) And lower tube section；Upper pipeline section (5) is used for extraneous environmental emission radioactive emission, and lower tube section is connected with air draft confluence room (1)；On It is connected between pipeline section (5) and lower tube section by the pipeline section that is flexible coupling (6)；It is characterized in that, the replacing options the following steps are included:Step S1, it is built in air-tightness mistress (3) and air-tightness on the roof of air draft confluence room (1) around main chimney breast Room (4)；Wherein, air-tightness interior room (4) setting is internal in air-tightness mistress (3), and the pipeline section that is flexible coupling is in air-tightness interior room (4) internal；Then, it installs on air-tightness interior room (4) for aspirating between air-tightness mistress (3) and air-tightness interior room (4) Air simultaneously discharges it into the internal blower (2) of air-tightness interior room (4)；Step S2, start blower, so that the space between air-tightness mistress (3) and air-tightness interior room (4) is in negative pressure state；So Replacement is flexible coupling pipeline section (6) afterwards.
- 2. replacing options according to claim 1, which is characterized in that Spence door (8) are provided in air-tightness interior room (4), Mistress's door (9) is provided on air-tightness mistress (3)；Step S2 further include:In starting blower, so as to make work after the space between air-tightness mistress (3) and air-tightness interior room (4) is in negative pressure state Make personnel (7) and dressed Radiation proof dress, then successively opens and close mistress's door (9) and Spence door (8) conveniently with into airtight Property interior room (4), then replacement be flexible coupling pipeline section (6)；Later, it opens staff (7) successively and closes Spence door (8) and mistress's door (9) conveniently to leave air-tightness mistress (3)；It is then shut off blower (2).
- 3. replacing options according to claim 1, which is characterized in that further include in air-tightness mistress (3) in step sl Room in air-tightness (10) are built between air-tightness interior room (4)；Blower (2) is for aspirating in room in air-tightness (10) and air-tightness Air between room (4) and to discharge it into air-tightness interior room (4) internal；Step S2 includes: starting blower, so that the space in air-tightness between room (10) and air-tightness interior room (4) is in negative pressure shape State；Then replacement is flexible coupling pipeline section (6).
- 4. replacing options according to claim 3, which is characterized in that Spence door (8) are provided in air-tightness interior room (4), Mistress's door (9) is provided on air-tightness mistress (3)；Middle room door (11) is provided in air-tightness on room (10)；Step S2 further include:In starting blower, so as to make work after the space in air-tightness between room (10) and air-tightness interior room (4) is in negative pressure state Make personnel (7) and dressed Radiation proof dress, then successively opens and close mistress's door (9), middle room door (11) and Spence door (8) conveniently To enter air-tightness interior room (4), then replacement is flexible coupling pipeline section (6)；Later, it opens staff (7) successively and closing Spence door (8) of whipping, middle room door (11) and mistress's door (9) is to leave Air-tightness mistress (3)；It is then shut off blower (2).
- 5. replacing options according to claim 3, which is characterized in that in step s 2, when starting blower, in air-tightness The air pressure in the space between room (10) and air-tightness interior room (4) is greater than 7.5kPa.
- 6. replacing options according to claim 3, which is characterized in that between air-tightness interior room (4) and main chimney breast with And the seam areas between air-tightness interior room (4) and the roof of air draft confluence room (1) is coated with radiotolerant sealant；Air-tightness Seam areas between mistress (3) and main chimney breast and between air-tightness mistress (3) and the roof of air draft confluence room (1) It is also coated with radiotolerant sealant；Link position between air-tightness interior room (4) and blower (2) is also coated with radiotolerant sealing Glue；In air-tightness between room (10) and main chimney breast and in air-tightness room (10) and air draft confluence room (1) roof it Between seam areas be also coated with radiotolerant sealant.
- 7. replacing options according to claim 3, which is characterized in that air-tightness interior room (4) is air-tightness tent or activity Board house；Air-tightness mistress (3) is air-tightness tent or movable plank house；Room (10) are air-tightness tent or movable plate in air-tightness Room.
- 8. replacing options according to claim 1, which is characterized in that in step s 2, when starting blower, outside air-tightness The air pressure in the space between room (3) and air-tightness interior room (4) is greater than 7.5kPa.
- 9. replacing options according to claim 1, which is characterized in that between air-tightness interior room (4) and main chimney breast with And the seam areas between air-tightness interior room (4) and the roof of air draft confluence room (1) is coated with radiotolerant sealant；Air-tightness Seam areas between mistress (3) and main chimney breast and between air-tightness mistress (3) and the roof of air draft confluence room (1) It is also coated with radiotolerant sealant；Link position between air-tightness interior room (4) and blower (2) is also coated with radiotolerant sealing Glue.
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| CN201710079611.3A CN106765837B (en) | 2017-02-08 | 2017-02-08 | A kind of nuclear power station owner chimney breast is flexible coupling the replacing options of pipeline section |
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| CN106765837B true CN106765837B (en) | 2019-03-22 |
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|---|---|---|---|---|
| FR2506063A1 (en) * | 1981-05-14 | 1982-11-19 | Commissariat Energie Atomique | Nuclear reactor vessel - which is surrounded by ring skirt cooled by natural air circulation created by tall chimney, so adequate cooling is available if accidents o |
| US4844807A (en) * | 1984-09-04 | 1989-07-04 | Manchak Frank | Insitu hazardous waste treating apparatus and method of using same |
| CN201431471Y (en) * | 2009-06-23 | 2010-03-31 | 龙再颖 | Operation box of medical radioactive elements |
| CN103871489A (en) * | 2014-03-07 | 2014-06-18 | 长江勘测规划设计研究有限责任公司 | Passive filter discharge system for underground nuclear power station |
| CN203940576U (en) * | 2014-07-23 | 2014-11-12 | 苏州热工研究院有限公司 | A kind of used in nuclear power station ventilation unit |
| CN104575649A (en) * | 2014-12-11 | 2015-04-29 | 中国核电工程有限公司 | Device for preventing radioactive combustible aerosol from overflowing |
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2017
- 2017-02-08 CN CN201710079611.3A patent/CN106765837B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2506063A1 (en) * | 1981-05-14 | 1982-11-19 | Commissariat Energie Atomique | Nuclear reactor vessel - which is surrounded by ring skirt cooled by natural air circulation created by tall chimney, so adequate cooling is available if accidents o |
| US4844807A (en) * | 1984-09-04 | 1989-07-04 | Manchak Frank | Insitu hazardous waste treating apparatus and method of using same |
| CN201431471Y (en) * | 2009-06-23 | 2010-03-31 | 龙再颖 | Operation box of medical radioactive elements |
| CN103871489A (en) * | 2014-03-07 | 2014-06-18 | 长江勘测规划设计研究有限责任公司 | Passive filter discharge system for underground nuclear power station |
| CN203940576U (en) * | 2014-07-23 | 2014-11-12 | 苏州热工研究院有限公司 | A kind of used in nuclear power station ventilation unit |
| CN104575649A (en) * | 2014-12-11 | 2015-04-29 | 中国核电工程有限公司 | Device for preventing radioactive combustible aerosol from overflowing |
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| Publication number | Publication date |
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| CN106765837A (en) | 2017-05-31 |
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