CN105401611A - System and method for supplying water to radioactive regions of nuclear chemical engineering plant - Google Patents
System and method for supplying water to radioactive regions of nuclear chemical engineering plant Download PDFInfo
- Publication number
- CN105401611A CN105401611A CN201510794477.6A CN201510794477A CN105401611A CN 105401611 A CN105401611 A CN 105401611A CN 201510794477 A CN201510794477 A CN 201510794477A CN 105401611 A CN105401611 A CN 105401611A
- Authority
- CN
- China
- Prior art keywords
- break tank
- water
- pipe
- active area
- feed pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000002285 radioactive effect Effects 0.000 title abstract description 9
- 238000003889 chemical engineering Methods 0.000 title abstract 2
- 239000000126 substance Substances 0.000 claims description 18
- 230000000694 effects Effects 0.000 claims description 13
- 239000008235 industrial water Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims description 5
- 230000035515 penetration Effects 0.000 claims description 4
- 239000008400 supply water Substances 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000002354 radioactive wastewater Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B1/00—Methods or layout of installations for water supply
- E03B1/02—Methods or layout of installations for water supply for public or like main supply for industrial use
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B11/00—Arrangements or adaptations of tanks for water supply
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Structural Engineering (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
The invention relates to a system and method for supplying water to radioactive regions of a nuclear chemical engineering plant. The system comprises a water supply pipe (1) and a break tank (5), wherein the water supply pipe (1) stretches to the radioactive region II from the non-radioactive or low-level radioactive region I, and the break tank (5) is connected with the water supply pipe (1) and is arranged in the radioactive region II. The bottom of the break tank (5) is connected with a water outflow pipe (7), an overflow pipe (8) is vertically arranged in the break tank (5), the bottom end of the overflow pipe (8) stretches out from the bottom of the break tank (5), and the top end of the overflow pipe (8) is lower than the bottom end of a water inlet of the break tank (5). The problem of backflow pollution can be effectively solved, and the system and method are safe, reliable, easy and convenient to maintain and wide in application range.
Description
Technical field
The invention belongs to nuclear chemical industry active area hydrotechny field, being specifically related to a kind of system and method for supplying water to nuclear chemical industry factory building active area.
Background technology
" Code for design of building water supply and sewerage " GB50015-2003 (version in 2009) 3.2.4 bar compulsive clause regulation " living water use must not because of produce in pipeline siphon, back pressure and contaminated ", and 3.2.4 joint and 3.2.5 joint provide corresponding backflow proof pollution measure.In nuclear chemical industry factory building, active area belongs to the high region of the backflow pollution extent of injury, once occur that feedwater piping refluxes, may damage human body or biological healthy, even threat to life or cause serious disease, must take effective backflow proof measure.By above-mentioned code requirement, the air gap, pressure reduction type backflow preventer and pressure vacuum brake should be taked.
As shown in Figure 2, the existing system for supplying water to nuclear chemical industry factory building active area normally arranges ball valve 2 and strainer 3 (as adopted Y-filter) on the feed pipe 1 being positioned at on-radiation or low-activity region I, the water supply line being positioned at active area II arranges pressure reduction type backflow preventer 9, and pressure reduction type backflow preventer 9 is connected with drain water circuit 10.At present, because pressure reduction type backflow preventer 9 can reflux in anti-siphon, anti-back pressure can reflux again, be widely applied.But when needs supply water to nuclear chemical industry factory building active area, because its radioactive level is high, the reliability that pressure reduction type backflow preventer 9 uses under high radioactivity level is difficult to ensure.In addition, pressure reduction type backflow preventer 9 structure is more complicated, and ordinary maintenance and maintenance work amount are large, but can not enter for a long time due to the area people that radioactive level is high, causes pressure reduction type backflow preventer 9 to maintain difficult problem.Therefore, need a kind of safe and reliable and safeguard and prevent the way of supplying water of backflow pollution simply and easily.
Summary of the invention
For the defect existed in prior art, the object of this invention is to provide a kind of system and method for supplying water to nuclear chemical industry factory building active area, prevent the problem of backflow pollution when adopting this system and method can effectively avoid nuclear chemical industry factory building active area to supply water, and should use safe and reliable, safeguard simple and convenient.
For reaching above object, the technical solution used in the present invention is: a kind of system for supplying water to nuclear chemical industry factory building active area, comprise and extend to the feed pipe of active area II from on-radiation or low-activity region I and be connected with feed pipe and be located at the break tank in active area II, the bottom of break tank is connected with outlet pipe; Be provided with the bleed off pipe stretched out from the bottom of break tank bottom in break tank vertically, the top of bleed off pipe is lower than the bottom of the water inlet of break tank.
Further, the water inlet of break tank is provided with the float valve be connected with feed pipe.
Further, break tank is provided with overflowing liquid level alarm.
Further, pipeline feed pipe being positioned at on-radiation or low-activity region I is provided with ball valve and strainer successively along water body flow direction.
Further, the intersection of on-radiation or low-activity region I and active area II is provided with isolation body of wall, and isolation body of wall is provided with the hollow penetration piece be enclosed within feed pipe.
A kind of method for supplying water to nuclear chemical industry factory building active area provided by the invention, comprising:
Through ball valve and strainer, industrial water is delivered to high radioactivity region II from on-radiation or low-activity region I by feed pipe, and is delivered to break tank;
By the outlet pipe of break tank, industrial water is delivered to water spot or watering equipment.
Further, described method also comprises, and is got rid of by recirculation water by the bleed off pipe of break tank.
Adopt provided by the invention a kind of to nuclear chemical industry factory building active area cutout supply water system and method, the problem of backflow pollution can be efficiently solved, and safe and reliable, safeguard simple and convenient; Described method not only can use when nuclear chemical industry factory building radiotropism regional water supply, but also can be widely used in the high place of all types of industries factory building backflow pollution degree for waterborne.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of system for supplying water to nuclear chemical industry factory building active area provided by the invention;
Fig. 2 is the structural representation of the existing system for supplying water to nuclear chemical industry factory building active area.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the invention will be further described.
As shown in Figure 1, a kind of system for supplying water to nuclear chemical industry factory building active area provided by the invention comprises and extends to the feed pipe 1 of active area (also known as " radioactivity red sector ") II from on-radiation or low-activity region (also known as " radioactivity orange district ") I and be connected with feed pipe 1 and be located at the break tank 5 in active area II, and the bottom of break tank 5 is connected with outlet pipe 7; Be provided with the bleed off pipe 8 that bottom is stretched out from the bottom of break tank 5 in break tank 5 vertically, the open top of bleed off pipe 8 can be arranged to horn mouth shape, and the top of bleed off pipe 8 is lower than the bottom of the water inlet of break tank 5.
In the present invention, owing to being provided with bleed off pipe 8 in break tank 5, and the top of bleed off pipe 8 is lower than the bottom of the water inlet of break tank 5, namely the peak level of break tank 5 and bottom, break tank 5 water inlet can ensure certain air partition, when there is backflow, get rid of recirculation water by bleed off pipe 8, and indirectly drain into radioactive wastewater drainage system.Like this, no matter which kind of situation can ensure that the industrial water entering active area can not backflow pollution upstream.
Usually, the air partition of 200mm is at least ensured between the peak level of break tank 5 and the bottom of break tank 5 water inlet.
In system provided by the invention, the water inlet of break tank 5 is provided with float valve 6, and the valve body of float valve 6 is connected with feed pipe 1, controls break tank 5 intake by float valve 6.
In addition, break tank 5 can connect overflowing liquid level alarm 12, the sensor 13 of overflow alarm 12 is located in break tank 5, and it is connected with the overflowing liquid level alarm 12 being located at on-radiation or low-activity region I by connecting rod 14.Notify that staff carries out problem investigation in time when there is overflow, and reduce the Spent Radioactive water yield because overflow produces.
Usually, isolation body of wall 4 is provided with between radioactivity orange district I radiotropism red sector II, when supplying water from radioactivity orange district I radiotropism red sector II, hollow penetration piece 11 need be set at the place through walls of water inlet pipe 1 and overflowing liquid level alarm 12 connecting rod, water inlet pipe 1 and overflowing liquid level alarm 12 connecting rod vacancy in hollow penetration piece 11 is made to enter radioactivity red sector II, thus radioactive substance can be stoped to spread from red sector to orange district, and facilitate pipe-line maintenance.
In addition, pipeline feed pipe 1 being positioned at on-radiation or low-activity region I is provided with ball valve 2 and strainer 3 successively along water body flow direction.Strainer 3 can be various forms of strainer, as Y-filter.
A kind of method supplied water to nuclear chemical industry factory building active area provided by the invention comprises:
Through ball valve 2 and strainer 3, industrial water is delivered to active area II from on-radiation or low-activity region I by feed pipe 1, and is delivered to break tank 5, control break tank 5 by float valve 6 and intake;
By the outlet pipe 7 of break tank 5, industrial water is delivered to water spot or watering equipment.
This method also comprises, and when there is backflow, gets rid of recirculation water by bleed off pipe 8.Like this, recirculation water can drain into radioactive wastewater drainage system indirectly, ensures that the industrial water entering active area II can not backflow pollution upstream.
Above-mentioned embodiment just illustrates of the present invention, and the present invention also can implement with other ad hoc fashion or other particular form, and does not depart from main idea of the present invention or substantive characteristics.Therefore, description embodiment from the viewpoint of any all should be considered as illustrative but not determinate.Scope of the present invention should be illustrated by the claim of adding, any also should be within the scope of the present invention with the intention of claim and the change of scope equivalence.
Claims (7)
1. the system for supplying water to nuclear chemical industry factory building active area, comprise and extend to the feed pipe (1) of active area II from on-radiation or low-activity region I and be connected with feed pipe (1) and be located at the break tank (5) in active area II, the bottom of break tank (5) is connected with outlet pipe (7); Be provided with the bleed off pipe (8) that bottom is stretched out from the bottom of break tank (5) in break tank (5) vertically, the top of bleed off pipe (8) is lower than the bottom of the water inlet of break tank (5).
2. system according to claim 1, is characterized in that, the water inlet of break tank (5) is connected with float valve (6).
3. system according to claim 1, is characterized in that, break tank (5) is provided with overflowing liquid level alarm (12).
4. the system according to claim 1,2 or 3, is characterized in that, pipeline feed pipe (1) being positioned at on-radiation or low-activity region I is provided with ball valve (2) and strainer (3) successively along water body flow direction.
5. system according to claim 1, it is characterized in that, the intersection of on-radiation or low-activity region I and active area II is provided with isolation body of wall (4), and isolation body of wall (4) is provided with the hollow penetration piece (11) be enclosed within feed pipe (1).
6. the method adopting system according to claim 1 to supply water to nuclear chemical industry factory building active area, comprising:
Through ball valve (2) and strainer (3), industrial water is delivered to high radioactivity region II from on-radiation or low-activity region I by feed pipe (1), and is delivered to break tank (5);
By the outlet pipe (7) of break tank (5), industrial water is delivered to water spot or watering equipment.
7. method according to claim 6, is characterized in that, described method also comprises, and is got rid of by recirculation water by the bleed off pipe (8) of break tank (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510794477.6A CN105401611A (en) | 2015-11-18 | 2015-11-18 | System and method for supplying water to radioactive regions of nuclear chemical engineering plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510794477.6A CN105401611A (en) | 2015-11-18 | 2015-11-18 | System and method for supplying water to radioactive regions of nuclear chemical engineering plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105401611A true CN105401611A (en) | 2016-03-16 |
Family
ID=55467341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510794477.6A Pending CN105401611A (en) | 2015-11-18 | 2015-11-18 | System and method for supplying water to radioactive regions of nuclear chemical engineering plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105401611A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113140342A (en) * | 2021-03-03 | 2021-07-20 | 中广核工程有限公司 | Method for discharging and conveying radioactive liquid effluent of nuclear power plant |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001214477A (en) * | 2000-12-05 | 2001-08-07 | Hitachi Ltd | Liquid supply equipment for running water |
| CN1401862A (en) * | 2001-06-15 | 2003-03-12 | 汕头经济特区龙湖电力技术服务有限公司 | Secondary water supply method and water supply system for high-level reservoir |
| JP2005282050A (en) * | 2004-03-29 | 2005-10-13 | Fm Valve Seisakusho:Kk | Water storage tank device |
| CN201443094U (en) * | 2009-05-22 | 2010-04-28 | 崔新建 | Water supply apparatus without negative pressure |
| CN202175985U (en) * | 2011-07-27 | 2012-03-28 | 张恒国 | Water supply device |
| CN104505130A (en) * | 2014-11-18 | 2015-04-08 | 上海核工程研究设计院 | Nuclear power station passive emergency water supply system |
| CN104751908A (en) * | 2013-12-31 | 2015-07-01 | 中国广核集团有限公司 | Emergency reactor core cooling water filling system under nuclear power station accident condition |
-
2015
- 2015-11-18 CN CN201510794477.6A patent/CN105401611A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001214477A (en) * | 2000-12-05 | 2001-08-07 | Hitachi Ltd | Liquid supply equipment for running water |
| CN1401862A (en) * | 2001-06-15 | 2003-03-12 | 汕头经济特区龙湖电力技术服务有限公司 | Secondary water supply method and water supply system for high-level reservoir |
| JP2005282050A (en) * | 2004-03-29 | 2005-10-13 | Fm Valve Seisakusho:Kk | Water storage tank device |
| CN201443094U (en) * | 2009-05-22 | 2010-04-28 | 崔新建 | Water supply apparatus without negative pressure |
| CN202175985U (en) * | 2011-07-27 | 2012-03-28 | 张恒国 | Water supply device |
| CN104751908A (en) * | 2013-12-31 | 2015-07-01 | 中国广核集团有限公司 | Emergency reactor core cooling water filling system under nuclear power station accident condition |
| CN104505130A (en) * | 2014-11-18 | 2015-04-08 | 上海核工程研究设计院 | Nuclear power station passive emergency water supply system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113140342A (en) * | 2021-03-03 | 2021-07-20 | 中广核工程有限公司 | Method for discharging and conveying radioactive liquid effluent of nuclear power plant |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160316 |
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| RJ01 | Rejection of invention patent application after publication |