CN214201114U - Aging test device for containment coating - Google Patents
Aging test device for containment coating Download PDFInfo
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- CN214201114U CN214201114U CN202022619562.8U CN202022619562U CN214201114U CN 214201114 U CN214201114 U CN 214201114U CN 202022619562 U CN202022619562 U CN 202022619562U CN 214201114 U CN214201114 U CN 214201114U
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Abstract
The utility model discloses a containment coating aging test device, a serial communication port, including the fixed plate, it has one row at least experimental appearance piece to inlay on the fixed plate, and one side of every row of experimental appearance piece is equipped with between the fixed plate with connecting rod matched with recess, and experimental appearance piece passes through the connecting rod and is fixed with the fixed plate. By applying the test sample preparation method, the situation that the sizes of the samples are not matched when different tests are carried out on the samples can be avoided, and a more reliable, more scientific and more efficient way is provided for the test of the heat transfer performance of the containment coating.
Description
Technical Field
The utility model relates to a containment coating aging testing device.
Background
The AP1000 unit is a third generation million kilowatt level advanced pressurized water reactor, the steel containment serves as important equipment of a passive containment cooling system and has the function of transferring heat in the containment to a final heat sink (environment) heat exchange surface under an accident condition, and a coating on the surface of the steel containment is a safety related coating. Compared with the traditional pressurized water reactor unit, the biggest difference is that the containment coating of the AP1000 unit requires good heat transfer performance and wettability, according to the transient analysis result of the containment, the thermal conductivity of the inorganic zinc coating is required to be more than or equal to 0.302 BTU/hr-ft-F, the specific heat is required to be more than or equal to 0.11 BTU/lbm-F, the dry-out index is required to be more than or equal to 0.6, the water contact angle is required to be less than 90 degrees, and when the safety-related coating state of the AP1000 unit is evaluated, the change of the heat transfer performance of the coating needs to be considered in addition to the aging degree of the coating.
At present, only simulation analysis data and no test evaluation data exist for the influence of aging of the containment coating of the AP1000 unit on the heat transfer performance, which is not enough to indicate that the heat transfer performance of the aged coating meets the safety requirement, so that a containment coating aging heat transfer performance test evaluation method needs to be established, and the influence of coating irradiation aging and heat aging on the heat transfer performance of the containment coating is demonstrated through specific tests. However, the test specimens used for the aging tests (salt spray test, irradiation test, LOCA test) and the test specimens used for the thermal performance tests (emissivity test, thermal conductivity test, specific heat test) are different in size.
Disclosure of Invention
The utility model discloses the technical problem that will solve is: how to prepare a sample that matches the requirements of both the aging test and the thermal performance test.
In order to solve the technical problem, the utility model provides a containment coating aging test device, a serial communication port, including the fixed plate, it has one row at least experimental appearance piece to inlay on the fixed plate, and one side of every row of experimental appearance piece is equipped with between the fixed plate with connecting rod matched with recess, and experimental appearance piece passes through the connecting rod and is fixed with the fixed plate.
Preferably, the end of the connecting rod is provided with a thread, and when the connecting rod is inserted into the fixing plate, the thread is matched with the thread at the inserting hole of the fixing plate.
Preferably, the test sample block comprises at least one of a thermal conductivity detection test sample block, a specific heat detection test sample block and an emissivity detection test sample block; the size of the thermal conductivity detection test sample block is 25.4 multiplied by 25.4mm, the size of the specific heat detection test sample block is 12.5 multiplied by 12.5mm, and the size of the emissivity detection test sample block is 30 multiplied by 30 mm.
Preferably, the surface of the test sample block and the surface of the fixing plate are on the same plane.
By applying the test sample preparation method, the situation that the sizes of the samples are not matched when different tests are carried out on the samples can be avoided, and a more reliable, more scientific and more efficient way is provided for the test of the heat transfer performance of the containment coating.
Drawings
FIG. 1 is a schematic view of a test sample block;
FIG. 2 is an exploded view of the containment coating aging test apparatus provided by the present invention;
FIG. 3 is a schematic diagram of a containment coating aging test apparatus provided by the present invention;
fig. 4 is a perspective view of the containment coating aging test apparatus provided by the present invention.
Detailed Description
In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
Examples
As shown in fig. 2-4, for the utility model provides a pair of containment coating aging testing device, it includes fixed plate 1, has inlayed one row at least experimental appearance piece 2 on the fixed plate 1, and one side of every row of experimental appearance piece 2 is equipped with between fixed plate 1 with connecting rod 3 matched with recess, and experimental appearance piece 2 is fixed with fixed plate 1 through connecting rod 3. The end part of the connecting rod 3 is provided with a thread 4, and when the connecting rod 3 is inserted into the fixing plate 1, the thread 4 is matched with the thread at the jack of the fixing plate 1. The test sample block 2 comprises at least one of a thermal conductivity detection test sample block, a specific heat detection test sample block and an emissivity detection test sample block; the size of the thermal conductivity detection test sample block is 25.4 multiplied by 25.4mm, the size of the specific heat detection test sample block is 12.5 multiplied by 12.5mm, and the size of the emissivity detection test sample block is 30 multiplied by 30 mm. The surface of the test sample block 2 and the surface of the fixing plate 1 are on the same plane.
The preparation method of the test device comprises the following steps:
(I) substrate selection principle
The sample base material is made of a steel plate which is made of the same material as the AP1000 steel containment vessel, and the sample base material meets the test requirements. The coating is selected from the coating selected by the AP1000 containment unit, the coating state fully reflects the actual situation on site, and the influences of different coating types (integral coating and local repair), different paint film thicknesses, different surface treatment modes (sand blasting and manual polishing), different coating processes (spraying and brushing) and the like on the heat transfer performance of the coating are considered.
(II) preliminary cutting size
Each sample substrate is preferably wire cut into bare steel sample pieces of 200mm by 100mm by 10mm by wire EDM. And then two groups of three test sample blocks are cut from the bare steel sample block, so that the cut is ensured to be neat and smooth. The specific uses and sizes are as follows: the thermal conductivity test piece 25.4X 25.4mm, specific heat test piece 12.5X 12.5mm, emissivity test piece 30X 30mm, as shown in FIG. 1.
(III) test sample preparation
The two groups of cut test sample blocks are detachably connected with the original bare steel sample block at the corresponding positions by connecting rods 3 with threads 4 at the heads.
The specific method comprises the following steps:
[1] two metal cylindrical thin rods with the length of about 200mm and the nominal diameter of 4mm are prefabricated, and the head parts of the thin rods are externally threaded;
[2] penetrating the edge of the test sample block 2 and the contact part of the test sample block and bare steel through a cylindrical hole with the diameter of 4mm, and performing internal thread treatment on the edge of the bare steel;
[3] the screw thread of the connecting rod 3 which is made in advance is ensured to be matched with the bare steel screw thread, as shown in figures 2 and 3.
In order to avoid adverse factors such as corrosion and the like generated in the test process of the connecting gap, the connecting gap is sealed by using the radiation-resistant sealant, and the smearing part of the sealant is basically ensured to be flush with the surface of the test sample block 2. And (3) performing integral single-side coating on the whole hermetically connected bare steel sample block to finish the preparation of a sample, as shown in fig. 4.
(IV) Instructions for sample use
And carrying out salt spray test, irradiation test and LOCA test on a plurality of prepared test samples integrally. After the test, three pre-fabricated test sample blocks 2 are taken down, and emissivity detection, thermal conductivity detection and specific heat detection are respectively carried out.
Claims (4)
1. The utility model provides a containment coating aging test device, its characterized in that includes fixed plate (1), has inlayed at least one row of test sample piece (2) on fixed plate (1), and one side of every row of test sample piece (2) is equipped with between fixed plate (1) with connecting rod (3) matched with recess, and test sample piece (2) are fixed with fixed plate (1) through connecting rod (3).
2. The aging test device for the coating of the containment vessel is characterized in that the end part of the connecting rod (3) is provided with a thread (4), and when the connecting rod (3) is inserted into the fixing plate (1), the thread (4) is matched with the thread at the inserting hole of the fixing plate (1).
3. The containment coating aging test apparatus of claim 1, wherein the test block (2) comprises at least one of a thermal conductivity detection test block, a specific heat detection test block, and an emissivity detection test block; the size of the thermal conductivity detection test sample block is 25.4 multiplied by 25.4mm, the size of the specific heat detection test sample block is 12.5 multiplied by 12.5mm, and the size of the emissivity detection test sample block is 30 multiplied by 30 mm.
4. The containment coating aging test device according to claim 1, wherein the surface of the test sample block (2) and the surface of the fixing plate (1) are on the same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022619562.8U CN214201114U (en) | 2020-11-12 | 2020-11-12 | Aging test device for containment coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022619562.8U CN214201114U (en) | 2020-11-12 | 2020-11-12 | Aging test device for containment coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214201114U true CN214201114U (en) | 2021-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022619562.8U Active CN214201114U (en) | 2020-11-12 | 2020-11-12 | Aging test device for containment coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214201114U (en) |
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2020
- 2020-11-12 CN CN202022619562.8U patent/CN214201114U/en active Active
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