CN110005951A - The processing of main steam safety valve steam discharge and collection system - Google Patents
The processing of main steam safety valve steam discharge and collection system Download PDFInfo
- Publication number
- CN110005951A CN110005951A CN201910126637.8A CN201910126637A CN110005951A CN 110005951 A CN110005951 A CN 110005951A CN 201910126637 A CN201910126637 A CN 201910126637A CN 110005951 A CN110005951 A CN 110005951A
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- China
- Prior art keywords
- main steam
- safety valve
- discharge
- pond
- steam
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- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/06—Pipe-line systems for gases or vapours for steam
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/02—Treating gases
Abstract
The present invention relates to a kind of processing of main steam safety valve steam discharge and collection systems, the system includes: that the main steam line of main steam safety valve is connected with the first and second two-way discharge branch, the main steam line is equipped with radioactivity survey instrument, the first and second discharges branch is respectively equipped with first switch valve and second switch valve, the outlet side of first discharge branch is connect with chimney, the outlet side of second discharge branch stretches in sealing pond, the sealing pond is provided with solution, the top for sealing pond keeps certain space, the top for sealing pond is equipped with collection air cock, collection air cock is connected with gas collecting apparatus.Present system can automatically control according to radioactivity state in discharge gas and be discharged or be collected, effectively avoid nuclear pollution.
Description
Technical field
The present invention relates to the processing of radioactivity steam, in particular to a kind of processing of main steam safety valve steam discharge and collect system
System.
Background technique
Currently, the processing of nuclear power plant's main steam safety valve steam discharge has the disadvantage that
It is not distinguished steam discharge to the steam discharge of safety valve to handle, that is, discharge approach is single, all discharges to atmosphere.
Wherein, when SGTR (steam generator heat-transfer pipe fracture) accident occurs, medium of the primary Ioops containing radionuclide
It can largely be leaked into secondary circuit by damaged heat-transfer pipe, if secondary circuit pressure rises to the take-off of main steam safety valve at this time
Pressure, main steam safety valve will be opened, and will be discharged into atmosphere, pollute the environment with radioactive steam.
In three generations's nuclear power technology, has and considered increase iodide ion absorber, but radiation all in steam discharge cannot be adsorbed
Property nucleic, so still there is the presence of escape of radioactivity problem.
In addition, main steam safety valve is directly discharged to containment, although can wrap at present in the rickle nuclear power unit of part
Hold radionuclide, avoid pollution external environment, but will increase the pressure-bearing burden of containment, other in containment are set
Standby, especially electrical equipment is also totally unfavorable.
Therefore one kind is developed for nuclear power plant, and simply, effectively, the main steam safety valve that environment will not pollute is arranged
Vapour processing, collection system are particularly important.
Summary of the invention
Present invention aims to overcome that above-mentioned the deficiencies in the prior art and provide a kind of processing of main steam safety valve steam discharge and
Collection system, the system can automatically control according to radioactivity state in discharge gas and are discharged or be collected, effectively keep away
Exempt to cause nuclear pollution.
The object of the invention is realized the technical solution adopted is that a kind of processing of main steam safety valve steam discharge and collection system, this is
System includes:
The main steam line of main steam safety valve is connected with the first and second two-way discharge branch, and the main steam line is set
There is radioactivity survey instrument, the first and second discharges branch is respectively equipped with first switch valve and second switch valve, first row
The outlet side for putting branch is connect with chimney, and the outlet side of the second discharge branch stretches in sealing pond, in the sealing pond
Equipped with solution, the top for sealing pond keeps certain space, and the top for sealing pond is equipped with collection air cock, and collection air cock is connected with
Gas collecting apparatus.
In the above-mentioned technical solutions, disperser is equipped in the sealing pond, the disperser includes:
Snorkel, inlet end are connect with the outlet side of the second discharge branch；
More intersect the diffuser of connection, and connectivity part is connect with the outlet side of the snorkel, the pipe of the diffuser
Wall is provided with multiple gas vents.
In the above-mentioned technical solutions, the collection air cock includes:
Guide cylinder is hollow form, and barrel is provided with venthole；
Spring mounting brackets, set on the bottom of the guide cylinder inner space；
Spring is located inside the guide cylinder, and one end is set in the mounting bracket, and the other end is equipped with piston, spring
Under natural conditions, piston is located at the lower section of the venthole, and guide cylinder inner piston is using down space as sealing state.
In the above-mentioned technical solutions, multichannel is connected between the main steam line and the first and second two-way discharge branch
IEEE Std parallel highway, each access are respectively equipped with safety valve.
In the above-mentioned technical solutions, sealing pond sum aggregate air bag is set in containment.
Further, above-mentioned main steam safety valve steam discharge processing and collection system further include controller, controller difference
It is connect with the radioactivity survey instrument, first switch valve and second switch valve, controller is detected according to radioactivity survey instrument
Radioactivity state control first switch valve or second switch valve switch.
In the above-mentioned technical solutions, solution is oxalic acid and liquor potassic permanganate in the pond.
Present system controls first switch valve according to the radioactivity state that radioactivity survey instrument detects by controller
Or the switch of second switch valve, it is collected to realize and be discharged or be discharged into sealing pond from chimney for discharge gas, works as row
Enter to seal pond when being collected, is come into full contact with and absorbed with steam discharge by the solution in pond, furthermore not absorbent steaming
Vapour will escape out liquid level to the headroom on pond top, and then realize collection in gas collecting apparatus by entering after collection air cock.
The invention has the following advantages that
1, " precisely discharge " is realized.Atmosphere can be directly arranged when "dead", carry out solution suction when having radioactivity
It receives processing and is collected by gas collecting apparatus.
2, main steam safety valve steam discharge processing of the present invention, collection system limit secondary circuit main steam safety valve radioactivity steam discharge
System realizes the containing of radioactive substance, meets the requirement of relevant laws and regulations in containment.
3, steam discharge will not be directly to containment space drainage, therefore the influence to equipment and environment in containment is reduced to
Minimum.
4, pond and gas collecting apparatus do not need by extraneous power and control the processing and collection of steam discharge, can be automatic
It completes.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of main steam safety valve steam discharge of the present invention processing and collection system.
Fig. 2 is the structural schematic diagram of disperser in main steam safety valve steam discharge of the present invention processing and collection system.
Fig. 3 is the structural schematic diagram for collecting air cock in main steam safety valve steam discharge of the present invention processing and collection system.
Figure label: 1- radioactivity survey instrument, the first safety valve of 2-, the second safety valve of 3-, 4- first switch valve, 5-
Two switch valves, 6- disperser (6.1- snorkel, 6.2- diffuser, 6.3- gas vent), the pond 7-, 8- collection air cock, 9- gas collection
Capsule, 10- guide cylinder (10.1- venthole), 11- piston, 12- spring, 13- spring mounting brackets, 14- containment, 15- steam hair
Raw device, 16- main steam line, 17- chimney.
Specific embodiment
The following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
As shown in Figure 1, main steam safety valve steam discharge processing of the present invention and collection system include: radioactivity survey instrument 1, the
One safety valve 2, the second safety valve 3, first switch valve 4, second switch valve 5, disperser 6, pond 7 collect 8 sum aggregate air bag of air cock
9。
Steam generator 15 in containment 14 is exhausted by main steam line 16, radioactivity survey instrument 1
It is connected on the main steam line 16 of main steam safety valve, radioactivity survey instrument 1 can be γ measuring instrumentss or other radiation
Property substance detection measuring instrumentss.
Main steam line is connected with the first and second discharge branches, and the first and second discharge branches are respectively equipped with first switch
The outlet side of valve 4 and second switch valve 5, the first discharge branch is connect with chimney 17, and the outlet side of the second discharge branch stretches to
In pond 7.Specification as safety needs, and is connected with multichannel simultaneously between main steam line and the first and second two-way discharge branch
Row access is equipped with safety valve on each access, and the present embodiment is by taking two-way IEEE Std parallel highway as an example, i.e., on two-way IEEE Std parallel highway respectively
Equipped with the first safety valve 2 and the second safety valve 3.
Pond 7 is provided with solution, and solution is the oxalic acid and liquor potassic permanganate centainly matched, for neutralizing steam discharge.Pond 7
For sealing device, for the top in pond 7 there are certain space, the top in pond is equipped with collection air cock 8, and collection air cock 8 is connected with
Collect air bag 9.To ensure safety, 7 sum aggregate air bag 9 of pond is set in containment 14.
Main steam safety valve steam discharge processing of the present invention and collection system further include controller (not shown), the controller
It is connect respectively with radioactivity survey instrument 1, first switch valve 4 and second switch valve 5, controller is according to radioactivity survey instrument 1
The radioactivity state control first switch valve 4 of detection or the switch of second switch valve 5.
Gas for the ease of exhaust pipe discharge is preferably contacted with the solution in pond 7, and the present invention also provides one kind point
Device 6 is dissipated, disperser 6 is set in the solution in pond 7, and the outlet side of the second discharge branch connects with the disperser 6 being located in pond 7
It connects, the gas of the second discharge branch discharge is entered in solution by disperser 6.The structure of disperser 6 such as Fig. 2 used in the present embodiment
It is shown, comprising: snorkel 6.1 intersects the diffuser 6.2 being connected to, the inlet end of snorkel 6.1 and the second discharge branch with Duo Gen
Outlet side connection, the connection position of more diffusers 6.2 connect with the outlet side of snorkel 6.1, and gas passes through snorkel 6.1
Into the connection position of more diffusers 6.2, then it is discharged, increases after more diffusers 6.2 respectively from the connection position
The effect of dispersion, and the tube wall of diffuser 6.2 is provided with multiple gas vents 6.3.
Collection air bag 9 is connect with collection air cock 8, for collecting the gas being discharged from collection air cock 8.As one kind of the invention
Preferred embodiment, the structure of present invention collection air cock used is as shown in figure 3, include guide cylinder 10, piston 11, spring 12 and bullet
Spring mounting bracket 13, guide cylinder 10 is hollow form, and barrel is provided with venthole 10.1, and spring mounting brackets 13 are mounted on guide cylinder
The bottom of 10 inner spaces, spring 12 are located at the inside of guide cylinder 10, and the lower end of spring 12 is connected on spring mounting brackets 13,
Upper end is connect with piston 11, and for spring 12 in nature, piston 11 is located at the lower section of venthole 10.1,10 inner piston of guide cylinder
Space below is sealing state.
The course of work of main steam safety valve steam discharge processing of the present invention and collection system is as follows:
Radioactivity survey instrument 1 on main steam line monitors the radioactivity of steam in pipeline in real time, if without radiation
Property or it is not exceeded, then controller close the second bleeder on second switch valve 5, open the first bleeder on first
Switch valve 4, when pressure reaches safety valve (2,3) set-pressure value, safety valve (2,3) is opened, and steam discharge will directly be arranged by chimney
Toward atmosphere；If radioactivity is exceeded, controller closes the first switch valve 4 on the first bleeder, opens the second bleeder
On second switch valve 5, will arrange with radioactive steam to the pond of sealing 7, the gas of the second bleeder discharge is from dispersion
The snorkel 6.1 of device 6 enters the more diffusers 6.2 for intersecting connection, finally enters pond 7 from the gas vent 6.3 of diffuser 6.2
In solution in, due to there is more diffusers 6.2, and each diffuser 6.2 is provided with multiple gas vents 6.3, therefore steam is abundant
It is contacted with the solution in pond, solution can more absorb steam, and not absorbent steam will escape out liquid level to pond top
Headroom causes air pressure in pond 7 to increase, and air pressure, which increases, will push the piston 11 in collection air cock 8 that spring force is overcome to transport upwards
Dynamic, after piston 11 crosses venthole 10.1, the gas of pond headroom will enter from venthole in collection air bag 9, and collection air bag 9 is swollen
Swollen, the final pressure collected in air bag 9 will be equal with headroom pressure in pond 7, and spring 12 will restore nature, piston at this time
11 move downward under the pulling force effect of spring 12, cross venthole 10.1 and stop at initial equilbrium position later, thus will
Gas in collection air bag 9 is opened with the gas barrier in the headroom of pond.
Claims (7)
1. a kind of main steam safety valve steam discharge processing and collection system, it is characterised in that: the main steam line of main steam safety valve
The first and second discharge branches are connected with, the main steam line is equipped with radioactivity survey instrument, first and second discharge
Branch is respectively equipped with first switch valve and second switch valve, and the outlet side of the first discharge branch is connect with chimney, the second discharge branch
The outlet side on road stretches in sealing pond, and the sealing pond is provided with solution, and the top for sealing pond keeps certain space,
The top for sealing pond is equipped with collection air cock, and collection air cock is connected with gas collecting apparatus.
2. main steam safety valve steam discharge processing according to claim 1 and collection system, it is characterised in that: the sealing water
Disperser is equipped in pond, the disperser includes:
Snorkel, inlet end are connect with the outlet side of the second discharge branch；
More intersect the diffuser of connection, and connectivity part is connect with the outlet side of the snorkel, and the tube wall of the diffuser is opened
There are multiple gas vents.
3. main steam safety valve steam discharge processing according to claim 2 and collection system, which is characterized in that the gas collection is opened
Pass includes:
Guide cylinder is hollow form, and barrel is provided with venthole；
Spring mounting brackets, set on the bottom of the guide cylinder inner space；
Spring is located inside the guide cylinder, and one end is set in the mounting bracket, and the other end is equipped with piston, and spring is natural
Under state, piston is located at the lower section of the venthole, and guide cylinder inner piston is using down space as sealing state.
4. main steam safety valve steam discharge processing according to claim 3 and collection system, it is characterised in that: the main steam
It is connected with multidiameter delay access between pipeline and the first and second two-way discharge branch, each access is respectively equipped with safety valve.
5. main steam safety valve steam discharge processing according to claim 4 and collection system, it is characterised in that: the sealing water
Pond sum aggregate air bag is set in containment.
6. any processing of main steam safety valve steam discharge and collection system according to claim 1~5, it is characterised in that: also
Including controller, which connect with the radioactivity survey instrument, first switch valve and second switch valve respectively, controller
According to the radioactivity state control first switch valve of radioactivity survey instrument detection or the switch of second switch valve.
7. main steam safety valve steam discharge processing according to claim 6 and collection system, it is characterised in that: the sealing water
Solution is oxalic acid and liquor potassic permanganate in pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910126637.8A CN110005951A (en) | 2019-02-20 | 2019-02-20 | The processing of main steam safety valve steam discharge and collection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910126637.8A CN110005951A (en) | 2019-02-20 | 2019-02-20 | The processing of main steam safety valve steam discharge and collection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110005951A true CN110005951A (en) | 2019-07-12 |
Family
ID=67165766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910126637.8A Pending CN110005951A (en) | 2019-02-20 | 2019-02-20 | The processing of main steam safety valve steam discharge and collection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110005951A (en) |
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| CN206593495U (en) * | 2017-03-05 | 2017-10-27 | 洛阳永宁金铅冶炼有限公司 | Market pot lead steam remover during a kind of lead is smelted |
| CN108062984A (en) * | 2017-11-23 | 2018-05-22 | 中国核电工程有限公司 | Containment release filtering emission integrates sexual system |
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2019
- 2019-02-20 CN CN201910126637.8A patent/CN110005951A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2741987Y (en) * | 2004-10-21 | 2005-11-23 | 金波洪 | Waste gas treatment and recovering device in leather tanning liquid production |
| DE102009023572A1 (en) * | 2009-06-02 | 2010-12-09 | Linde Aktiengesellschaft | Device for discharging e.g. water vapor from steam pipes, has outlet device opened during obtaining defined pressure, which is produced by static height of liquid medium in pipe section, or during obtaining defined level of liquid |
| CN101777392A (en) * | 2009-11-17 | 2010-07-14 | 华北电力大学 | Accident buffering and removing device for nuclear power station by supercritical CO2 |
| CN202823111U (en) * | 2012-09-27 | 2013-03-27 | 武汉市永发化工制造有限公司 | Environment-friendly recovery device for tail acid of reagent hydrochloric acid |
| JP2014083511A (en) * | 2012-10-25 | 2014-05-12 | Hitachi-Ge Nuclear Energy Ltd | Siloxane decomposition apparatus |
| CN103871495A (en) * | 2014-03-07 | 2014-06-18 | 长江勘测规划设计研究有限责任公司 | Containment pressure relieving system of underground nuclear power station in serious accidents |
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| CN108062984A (en) * | 2017-11-23 | 2018-05-22 | 中国核电工程有限公司 | Containment release filtering emission integrates sexual system |
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Application publication date: 20190712 |