CN220932266U - Device for reducing jet flow influence of inflation inlet in containment vessel pressurizing test process - Google Patents
Device for reducing jet flow influence of inflation inlet in containment vessel pressurizing test process Download PDFInfo
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- CN220932266U CN220932266U CN202322259671.7U CN202322259671U CN220932266U CN 220932266 U CN220932266 U CN 220932266U CN 202322259671 U CN202322259671 U CN 202322259671U CN 220932266 U CN220932266 U CN 220932266U
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- containment vessel
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- inflation inlet
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- 238000012360 testing method Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000009434 installation Methods 0.000 claims description 9
- 230000001012 protector Effects 0.000 claims description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 238000012669 compression test Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
The utility model relates to the field of testing and detecting service performance of a building structure of a nuclear power plant, and provides a device for reducing jet influence of an inflation inlet in a containment vessel pressurizing test process. The utility model realizes balanced air flow distribution and slows down the impact effect of direct impact of high-speed air flow on the premise of not influencing the pressure-charging rate of the containment vessel pressure test, and effectively protects the containment vessel and equipment in the containment vessel.
Description
Technical Field
The utility model relates to the field of test and detection of service performance of a building structure of a nuclear power plant, in particular to a device for reducing jet influence of an inflation inlet in a containment vessel pressurizing test process.
Background
The containment vessel pressure test is one of the most important special tests during debugging and commercial transportation of a nuclear power plant, and is used for pressurizing the containment vessel to the design pressure by using dry air at a certain rate so as to simulate the pressure in the containment vessel under the working condition of a design reference accident, so as to verify whether the sealing and structural performance of the containment vessel serving as a third barrier of nuclear safety and accessory parts thereof meet the requirements.
With continuous operation of the domestic nuclear power units in recent years, the frequency of the test is greatly increased, and in order to obtain a proper balance point between nuclear safety, quality and construction period, and benefit, the pressure-charging rate of the containment pressure test by each nuclear power plant is steadily developed. The pressurizing rate of the pressure test of the containment vessel in the foreign part at present is 40kPa/h, which is far higher than the domestic level (taking domestic pressurized water reactor as an example, the pressurizing rate of most power plants is less than 20 kPa/h), and the pressurizing rate of the pressure test of the containment vessel is improved in the nuclear power field of China in the future, so that the advanced level of foreign part is a necessary trend.
Along with the improvement of the pressure rate of the containment vessel pressure test, the gas speed at the gas charging port is obviously increased, and the condition that no protective measures are taken under the existing low-rate pressure condition can not be adapted to the condition of improving the pressure rate. The device is provided for solving the problems of in-shell structure and equipment protection caused by the improvement of the pressurizing rate of a future containment vessel pressurizing test.
Disclosure of utility model
The utility model aims to provide a device for reducing jet influence of an inflation inlet in a containment vessel inflation test process, which can solve the problem that the jet influence of the inflation inlet in the containment vessel inflation test process can solve the problem that the airflow is concentrated and impacted due to the rising of the containment vessel inflation speed, and simultaneously can prevent foreign matters from blocking a pressure release channel in a pressure release stage of the containment vessel inflation test.
In order to achieve the above object, the present utility model provides the following technical solutions:
The utility model provides a device that inflation inlet efflux influences is beaten to containment, includes protector fixed base, anti-impact cover and support frame, the anti-impact cover is streamlined filter screen formula hemisphere anti-impact cover, and the opening is towards the containment barrel, the support frame will anti-impact cover installs protector fixed base top.
As an embodiment, the guard fixing base is fixedly mounted on the ground by base anchor bolts.
As an embodiment, the number of foundation bolts of the base is 4, and the foundation bolts are respectively installed at four corners of the fixing base of the protection device.
As an implementation mode, the supporting frame and the fixing base of the protecting device are fixed in a bolt connection mode, and the height of the supporting frame is adjusted so that the center of the sphere of the anti-impact cover and the center of the circle of the pressurizing penetrating piece reach the same elevation.
As an implementation manner, the support frame is an assembly of a support and a diagonal brace, the support is a vertical mounting rod, and the diagonal brace is a connecting rod for connecting the support and the fixing base of the protection device.
As an implementation manner, the bracket, the diagonal brace and the guard fixing base form a triangle structure, so that the installation strength is enhanced.
As an implementation manner, the number of the supporting frames is 3, one group of the supporting frames is installed at the rearmost part of the anti-impact cover, and the other two groups of the supporting frames are respectively installed at two sides of the rearmost supporting frames.
As an embodiment, a support rod is provided in front of the rearmost support frame, and connects the impact shield and the protector fixing base.
As an implementation mode, the caliber size of the anti-impact cover adopts twice the diameter of the pressurizing opening, and the area of the filter screen hole occupies 1/3 of the hemispherical area.
As an implementation manner, the anti-impact cover is made of aluminum alloy.
Compared with the prior art, the device for reducing the jet influence of the inflating port in the process of the containment vessel pressurizing test has the following beneficial effects:
The utility model realizes balanced air flow distribution and slows down the impact effect of direct impact of high-speed air flow on the premise of not influencing the pressure-charging rate of the containment vessel pressure test, and effectively protects the containment vessel and equipment in the containment vessel.
The utility model adopts modularized extremely simple design, has low requirement on the installation environment and can realize quick installation.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a schematic structural diagram of an apparatus for reducing the jet influence of an inflation inlet during a containment vessel compression test according to an embodiment of the present utility model;
FIG. 2 is a front view of an apparatus for reducing the effect of inflation port jets during a containment vessel compression test according to an embodiment of the present utility model;
FIG. 3 is a schematic plan view of the installation position of a device for reducing the jet influence of an inflation inlet in the process of a containment vessel compression test according to the embodiment of the utility model;
fig. 4 is a cross-sectional view taken along the A-A plane of fig. 3.
Reference numerals illustrate:
1. A guard fixed base; 2. foundation bolts of the base; 3. a streamline filter screen type hemispherical impact-proof cover; 4. an adjustable bracket and a diagonal brace.
Detailed Description
Further details are provided below with reference to the specific embodiments.
As shown in fig. 1 to 4, the utility model provides a device for reducing jet influence of an inflation inlet in a containment vessel compression test process, which comprises a protection device fixing base 1, a base foundation bolt 2, an anti-impact cover 3 and a supporting frame 4. The utility model adopts modularized design, is easy to assemble and disassemble, the device main body adopts aluminum alloy material, and is lighter, and the adjustable design of the bracket can be suitable for containment pressurizing ports of different stacks.
The anti-impact cover 3 is provided with a plurality of holes, and the whole anti-impact cover is hemispherical and adopts a streamline structure. The impact shield 3 is preferably a streamlined screen type hemispherical impact shield. The design of the streamline filter screen type hemispherical anti-impact cover ensures enough flow area, and the pressure-charging speed of the containment vessel is not influenced while the impact of high-speed airflow is slowed down.
The opening of the impact shield 3 is directed towards the containment cylinder so that ram air enters the inside of the impact shield 3.
The protection device fixing base 1 is fixed on the ground by adopting the base foundation bolt 2, the anti-impact cover 3 and the support frame 4 are fixed in a bolt connection mode, the support frame 4 and the protection device fixing base 1 are also fixed in a bolt connection mode, and the height of the support frame 4 is adjusted so that the center of a sphere of the anti-impact cover 3 and the center of a circle of the pressurizing penetrating piece reach the same elevation.
The support frame 4 is the sub-assembly of support and bracing, and the support is the perpendicular installation member, and the bracing is the connecting rod of linking bridge and protector fixed base 1 for support, bracing and protector fixed base 1 form triangle-shaped structure, reinforcing installation strength.
Preferably, the number of the supporting frames 4 is 3, wherein one group of supporting frames 4 is installed at the rearmost part of the anti-impact cover 3, the other two groups of supporting frames 4 are respectively installed at two sides of the rearmost supporting frames 4, and a supporting rod is arranged in front of the rearmost supporting frames 4 and is connected with the anti-impact cover 3 and the fixing base 1 of the protecting device.
The number of foundation bolts 2 of the base is 4, and the foundation bolts are respectively arranged at four corners of the fixed base 1 of the protection device so as to enhance the installation strength.
The aluminum alloy material adopted by the temporary facility for the containment penetration sealing test can bear the test experience of the containment pressing test pressure.
The streamline filter screen type hemispherical anti-impact cover is made of aluminum alloy material, the caliber size is about twice the diameter of the pressurizing opening, and the area of a filter screen hole occupies 1/3 of the hemispherical area.
As shown in fig. 3 and 4, the present utility model is installed in the shell of the containment vessel shell 5, with the punch-through 6 penetrating from outside the shell into the shell, and the punch gas entering into the shell. Illustratively, the diameters and elevations of the pressurizing ports related to the pressurizing tests of the containment vessels with different stacks are collected, the processing of the hemispherical anti-impact cover of the filter screen and the selection of the adjustable support and the diagonal brace are comprehensively carried out, and the installation of the device is carried out before the integral pressurizing test of the containment vessels is started and after the sealing test of the pressurizing pipeline is carried out.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a device for reducing inflation inlet efflux influence of containment pressure test process, its characterized in that includes protector fixed base (1), protection cover (3) and support frame (4), protection cover (3) are streamlined filter screen formula hemisphere protection cover, and the opening is towards containment barrel (5), support frame (4) will protection cover (3) are installed protector fixed base (1) top.
2. The device for reducing the jet influence of an inflation inlet during a containment vessel compression test according to claim 1, wherein the protective device fixing base (1) is fixedly arranged on the ground through base foundation bolts (2).
3. Device for reducing the jet influence of the inflation inlet during the pressure test of a containment vessel according to claim 2, characterized in that the number of foundation bolts (2) of the base is 4, which are respectively mounted on the four corners of the fixed base (1) of the protection device.
4. The device for reducing the jet influence of the inflation inlet in the process of the pressure test of the containment vessel according to claim 1, wherein the supporting frame (4) and the fixing base (1) of the protection device are fixed in a bolt connection mode, and the height of the supporting frame (4) is adjusted so that the center of sphere of the impact-resistant cover (3) and the center of the circle of the pressure penetrating piece (6) reach the same elevation.
5. The device for reducing the jet influence of the inflation inlet during the pressure test of the containment vessel according to claim 1, wherein the supporting frame (4) is an assembly of a bracket and a diagonal brace, the bracket is a vertically installed rod, and the diagonal brace is a connecting rod for connecting the bracket and the fixed base (1) of the protection device.
6. The device for reducing the jet influence of the inflation inlet during the pressure test of the containment vessel according to claim 5, wherein the bracket, the diagonal brace and the protective device fixing base (1) form a triangular structure, and the installation strength is enhanced.
7. The device for reducing the jet influence of an inflation inlet during a containment vessel inflation test according to claim 5, wherein the number of the supporting frames (4) is 3, one group of the supporting frames (4) is arranged at the rearmost part of the anti-impact cover (3), and the other two groups of the supporting frames (4) are respectively arranged at two sides of the rearmost supporting frame (4).
8. Device for reducing the jet influence of the inflation inlet during the pressure test of a containment vessel according to claim 7, characterized in that a support bar is arranged in front of the rearmost support frame (4), which support bar connects the impact shield (3) and the protective device fixing base (1).
9. The device for reducing the jet influence of the inflating port during the pressure test of the containment vessel according to claim 1, wherein the caliber size of the anti-impact cover (3) is twice the diameter of the inflating port, and the area of the filter screen hole occupies 1/3 of the hemispherical area.
10. The device for reducing the jet influence of the inflating port during the pressing test of the containment vessel according to claim 1, wherein the anti-impact cover (3) is made of aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322259671.7U CN220932266U (en) | 2023-08-22 | 2023-08-22 | Device for reducing jet flow influence of inflation inlet in containment vessel pressurizing test process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322259671.7U CN220932266U (en) | 2023-08-22 | 2023-08-22 | Device for reducing jet flow influence of inflation inlet in containment vessel pressurizing test process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220932266U true CN220932266U (en) | 2024-05-10 |
Family
ID=90968240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322259671.7U Active CN220932266U (en) | 2023-08-22 | 2023-08-22 | Device for reducing jet flow influence of inflation inlet in containment vessel pressurizing test process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220932266U (en) |
-
2023
- 2023-08-22 CN CN202322259671.7U patent/CN220932266U/en active Active
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