CN203250543U - Device for intercepting and storing disintegrating slag - Google Patents
Device for intercepting and storing disintegrating slag Download PDFInfo
- Publication number
- CN203250543U CN203250543U CN2012206984585U CN201220698458U CN203250543U CN 203250543 U CN203250543 U CN 203250543U CN 2012206984585 U CN2012206984585 U CN 2012206984585U CN 201220698458 U CN201220698458 U CN 201220698458U CN 203250543 U CN203250543 U CN 203250543U
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- Prior art keywords
- disintegrating slag
- built
- interception
- described device
- stainless steel
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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
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Abstract
The utility model discloses a device (5) for intercepting and storing disintegrating slag. The device comprises a stainless steel frame and a porous plate made of a stainless steel, and the whole is a box type structure that the top is open, the bottom is closed and the periphery is provided with filter screens. The area of an opening on the top of the device (5) is larger than or equal to the area of a hole of an upper floor of the built-in refueling water storage tank, a disintegrating slag collection plate (6) is arranged around the opening on the top, columnar filter cylinders (7) or plate-shaped filter screens are arranged on the sidewall of the central section of the device (5), and reinforcing ribs (8) are arranged in the device (5). According to the utility model, tiny particles and fibers entering the built-in refueling water storage tank can be reduced, the possibility that blockages of downstream pipelines and reactor core assemblies occur can be reduced, the water quality of the built-in refueling water storage tank after failures is guaranteed, and reactor waste heat exporting capability can be ensured.
Description
Technical field
The utility model relates to the npp safety system, belongs to an a kind of part for the built-in material-changing water tank filtering system of npp safety shell.
Background technology
During the accidents such as npp safety shell interior generation LOCA or Main steam line break, high energy line fracture in the containment, the power of spurting of cut medium will be to insulation material on every side, the japanning of civil engineering structure and equipment and other materials etc. form impact failure, thereby cause the generation of a large amount of all kinds of disintegrating slags, if disintegrating slag is passed to safety injection system, the pond at the safety shower system entry place (melt pit in the two generations pressurizations water-water reactor unit for example, built-in material-changing water tank (IRWST) in three generations's presurized water reactor unit), and be deposited on its inner filtrator that arranges, disintegrating slag accumulation on the filter screen will cause the increase that the disintegrating slag lamination falls, and then might cause the pump of Safety Injection/spray system to produce underfed, the problems such as cavitation affect npp safety; If too much disintegrating slag enters Safety Injection/spray system, may cause that equipment component or reactor fuel screen work stop up, affecting residual heat of nuclear core derives, and further causes more major accident.
The utility model content
For existing deficiency in the prior art, the utility model purpose provides a kind of device for interception and storage disintegrating slag, described device can reduce molecule and the fiber that arrives the downstream, reduces the possibility that obstruction occurs in the downstream, guarantees the ability that reactor waste is derived.
The utility model is to solve the problems of the technologies described above the technical scheme that adopts as described below:
A kind of for interception and store the device of disintegrating slag, formed by stainless steel frame and stainless steel porous plate, whole for for top end opening, base seal, be the case structure of filter screen all around.
Further, the top end opening area of described device is more than or equal to the upper floor plate holes area of built-in material-changing water tank.
Further, be provided with the disintegrating slag collecting board around the top open part of described device.
Further, the middle part sidewall of described device is provided with column filter cylinder or tabular filter screen.
Further, the inside of described device is provided with reinforcement.
Further again, described device is formed by several rectangular parallelepipeds or square module combinations, and the module bottom that is positioned at bottom is entity structure, and remainder is the tubular structure of the equal opening in top and bottom.
The utility model is arranged on below the upper floor plate holes of built-in material-changing water tank, because device is open top, base seal, the structure that is screen pack all around, the size of filter opening and density can be determined by the designer voluntarily according to the engineering design needs, like this, device just can filter and store the disintegrating slag from built-in material-changing water tank upper floor plate holes place, thereby can effectively reduce the molecule and the fiber that arrive the downstream, reduce the possibility that obstruction occurs in the downstream, guarantee the ability that reactor waste is derived, and device described in the utility model can be formed by several rectangular parallelepipeds or square module combinations, and the module bottom that is positioned at bottom is entity structure, remainder is the tubular structure of the equal opening in top and top, thereby can arrange more flexibly in conjunction with space size and the shape of built-in material-changing water tank corresponding position, and convenient follow-up maintenance operation.
Description of drawings
Fig. 1 is for being used for tackling and storing the module diagram of the device of disintegrating slag;
Fig. 2 is the exemplary construction schematic diagram with the device that is used for interception and storage disintegrating slag of filter cylinder.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated, this disintegrating slag interception and storage facility are referred to as " disintegrating slag delay basket " in the following description.
Device for interception and storage disintegrating slag described in the utility model is arranged in the built-in material-changing water tank.Under accident conditions, the current that carry disintegrating slag enter in the device 5 for interception and storage disintegrating slag described in the utility model from the floor perforate of built-in material-changing water tank upper strata, filter through device 5, device 5 interceptions are also stored the disintegrating slag of upstream, guarantee the water quality that the built-in material-changing water tank of IRWST is collected, can not cause the obstruction of the nozzle on containment spray system (CSP) spraying ring pipe and the obstruction of fuel rod being supported barrier in safety injection system (RSI) the recycle stage to guarantee the water that enters container spray/injected system.
Particularly, a kind of for interception and store the device 5 of disintegrating slag, shown in Fig. 1-2, formed by stainless steel frame and stainless steel porous plate, integral body is top end opening, base seal, is the case structure of filter screen all around.The top end opening area of described device is more than or equal to the upper floor plate holes area of built-in material-changing water tank, be provided with disintegrating slag collecting board 6 around the top open part of device, the middle part sidewall of device is provided with column filter cylinder 7 or tabular filter screen, the inside of device is provided with reinforcement 8, described device is formed by several rectangular parallelepipeds or square module combinations, the module bottom that is positioned at bottom is entity structure, and remainder is the tubular structure of the equal opening in top and bottom.
After in the npp safety shell accidents such as LOCA or Main steam line break occuring, per hour enter the discharge of built-in material-changing water tank about thousands of tons of, may carry a large amount of disintegrating slags simultaneously.In order to satisfy the needs of filtering system after the accident, the device 5 that is used for interception and stores disintegrating slag of built-in material-changing water tank has been done following optimization:
Shown in Fig. 1 or 2, surface for tackling and store the device 5 of disintegrating slag of the present utility model is stainless steel porous filter screen, increase in case of necessity filter cylinder 7 at the middle part, guarantee that device 5 has enough large filter area, because disintegrating slag may at device 5 interior formation disintegrating slag beds, stop up filter opening, therefore, enough large filter area can guarantee to produce less pressure drop to installing 5 in by great deal running water, and excessive pressure drop may cause current to overflow from installing 5, reduces the disintegrating slag intercepting efficiency.In order to prevent that disintegrating slag from overflowing from the top perforate, the height that is used for interception and stores the device 5 of disintegrating slag should be higher than the high liquid level (HLL) of built-in material-changing water tank liquid; The device 5 that is used for interception and storage disintegrating slag should have can be accepted from all current of upstream and the aperture area of disintegrating slag, and aperture area should be more than or equal to the upper floor plate holes area of built-in material-changing water tank; Installing outside 5 for preventing that disintegrating slag from omitting, can around the top open part of device 5, disintegrating slag collecting board 6 be set in case of necessity, preventing that the disintegrating slag filtered from directly entering built-in material-changing water tank; Install the reinforcement 8 that 5 inside also have been provided with the load-bearing effect, assurance device 5 has enough intensity is born current when storing disintegrating slag impact, and convenient the installation and maintenance afterwards.Install 5 bottoms and should have enough large volume, can hold issuable maximum disintegrating slag after the accident.Because disintegrating slag proportion is greater than water, the disintegrating slag major part can be deposited to device 5 bottoms, and the sedimentation of disintegrating slag is conducive to holding device 5 tops to be cleaned relatively, guarantees that upper sieve has enough circulation areas.
As shown in Figure 1, device 5 adopts the module type stereo unitized construction, and basic module is square or rectangular parallelepiped, and the bottom that is positioned at module bottom is entity structure, and remainder is the tubular structure of the equal opening in top and bottom.The spacer body of regular shape is set in inside modules, can better holds disintegrating slag like this.For guaranteeing the disintegrating slag intercepting efficiency, but the circulation area of aggrandizement apparatus, middle part sidewall at device arranges column filter cylinder 7 or tabular filter screen, installing 5 bottoms is solid plate, adopt set bolt or similar fashion to be fixedly connected with ground, top or sidepiece also are connected with-5 meters floor plates and built-in material-changing water tank sidewall by necessary supporting construction, be convenient to device 5 under various operating modes Stability Analysis of Structures and guarantee its function.Inside and outside at device 5 is all adopted steel structure frame, bears disintegrating slag load.
During use, the utility model is arranged on below the upper floor plate holes of built-in material-changing water tank, 5 be open top, base seal because installing, be the structure of screen pack all around, the size of filter opening and density can be determined by the designer voluntarily according to the engineering design needs.Like this, device 5 just can filter and store the disintegrating slag from built-in material-changing water tank upper floor plate holes place, thereby can effectively reduce the molecule and the fiber that arrive the downstream, reduce the possibility that obstruction occurs in the downstream, guarantee the ability that reactor waste is derived.(correlation circumstance can submit to the same period referring to the applicant denomination of invention be the patented claim of " the built-in material-changing water tank filter system of a kind of containment ")
As a kind of preferred embodiment of the present utility model, device 5 can be formed by several rectangular parallelepipeds or square module combinations, and the module bottom that is positioned at bottom is entity structure, remainder is the tubular structure of the equal opening in top and top, thereby can arrange more flexibly in conjunction with space size and the shape of built-in material-changing water tank corresponding position, and convenient follow-up maintenance operation.
In another embodiment, device 5 by stationary installation be fixed on built-in material-changing water tank upper floor plate holes under, be used for interception and store and pass the disintegrating slag of upper floor plate holes, reduce the disintegrating slag that arrives the downstream.Because device 5 has been tackled most of disintegrating slag, thereby can guarantee the water quality in the built-in material-changing water tank of IRWST, and greatly reduce the disintegrating slag that arrives the downstream.Compare with conventional filter, reduced the molecule and the fiber that arrive the downstream, reduce the possibility that obstruction occurs in the downstream, can guarantee the ability that reactor waste is derived.
The composition that is used for interception in the present embodiment and stores the device 5 of disintegrating slag comprises: the column filter cylinder at stainless steel porous surface, device 5 middle parts or tabular filter screen (with a kind of example of filter cylinder 7 as shown in Figure 2), reinforcement 8 and the disintegrating slag collecting board 6 that increases in case of necessity.
The design of device 5 can change according to the requirement of actual disintegrating slag quantity, practical spatial arrangement, does not have solid shape, but need to satisfy following criterion:
The volume of device 5 is greater than the cumulative volume of disintegrating slag;
The porous filter screen form is adopted on device 5 surfaces, when guaranteeing water flow, stores the disintegrating slag of intercepting;
It is inner that device 5 is fixed on built-in material-changing water tank by stationary installation, and adopt reinforcement to strengthen, and guarantees that disintegrating slag is detained basket and has enough intensity, the impact that can bear current when storing disintegrating slag.
Owing to having increased the device 5 that is used for interception and stores disintegrating slag, guaranteed the water quality of built-in material-changing water tank after the accident, can reduce the molecule and the fiber that arrive the downstream, the possibility that reduction is stopped up from pipeline and the generation of reactor fuel assembly grid of built-in material-changing water tank water intaking is guaranteed the ability that reactor waste is derived.
It should be noted that; above-mentioned specific embodiment only is exemplary; under above-mentioned instruction of the present utility model, those skilled in the art can carry out various improvement and distortion on the basis of above-described embodiment, and these improvement or distortion all drop in the protection domain of the present utility model.It will be understood by those skilled in the art that top specific descriptions just in order to explain the purpose of this utility model, is not for restriction the utility model.Protection domain of the present utility model is limited by claim and equivalent thereof.
Claims (6)
1. device (5) that is used for interception and stores disintegrating slag, it is characterized in that: described device is comprised of stainless steel frame and stainless steel porous plate, and integral body is top end opening, base seal, is the case structure of filter screen all around.
2. as claimed in claim 1 for interception and store the device (5) of disintegrating slag, it is characterized in that: the top end opening area of described device is more than or equal to the upper floor plate holes area of built-in material-changing water tank.
3. the device (5) for interception and storage disintegrating slag as claimed in claim 2 is characterized in that: be provided with disintegrating slag collecting board (6) around the top open part of described device.
4. as claimed in claim 1 for interception and store the device (5) of disintegrating slag, it is characterized in that: the middle part sidewall of described device is provided with column filter cylinder (7) or tabular filter screen.
5. such as the described device (5) for interception and storage disintegrating slag of any one among the claim 1-4, it is characterized in that: the inside of described device is provided with reinforcement (8).
6. such as the described device (5) for interception and storage disintegrating slag of any one among the claim 1-4, it is characterized in that: described device is formed by several rectangular parallelepipeds or square module combinations, the module bottom that is positioned at bottom is entity structure, and remainder is the tubular structure of the equal opening in top and bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206984585U CN203250543U (en) | 2012-12-17 | 2012-12-17 | Device for intercepting and storing disintegrating slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206984585U CN203250543U (en) | 2012-12-17 | 2012-12-17 | Device for intercepting and storing disintegrating slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203250543U true CN203250543U (en) | 2013-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206984585U Expired - Lifetime CN203250543U (en) | 2012-12-17 | 2012-12-17 | Device for intercepting and storing disintegrating slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203250543U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106340327A (en) * | 2016-10-14 | 2017-01-18 | 深圳中广核工程设计有限公司 | Built-in material change water tank of nuclear power station containment vessel |
| CN108159756A (en) * | 2017-12-27 | 2018-06-15 | 中广核研究院有限公司 | It is detained basket and its filtering table |
-
2012
- 2012-12-17 CN CN2012206984585U patent/CN203250543U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106340327A (en) * | 2016-10-14 | 2017-01-18 | 深圳中广核工程设计有限公司 | Built-in material change water tank of nuclear power station containment vessel |
| CN108159756A (en) * | 2017-12-27 | 2018-06-15 | 中广核研究院有限公司 | It is detained basket and its filtering table |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131023 |