CN104830269A - Special silicone sealant and sealing structure for nuclear power plant integral structure - Google Patents
Special silicone sealant and sealing structure for nuclear power plant integral structure Download PDFInfo
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- CN104830269A CN104830269A CN201510246549.3A CN201510246549A CN104830269A CN 104830269 A CN104830269 A CN 104830269A CN 201510246549 A CN201510246549 A CN 201510246549A CN 104830269 A CN104830269 A CN 104830269A
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Abstract
The invention relates to a special silicone sealant for a nuclear power plant integral structure. The special silicone sealant comprises the following components in parts by mass: 100 parts of 50000cs hydroxyl silicone oil, 5-10 parts of dimethyl silicone oil, 1-5 parts of a KH550 coupling agent, 1-5 parts of a KH560 coupling agent, 10-35 parts of flame retardant powder, 10-20 parts of heavy aluminum oxide, 15-30 parts of an inorganic filler, 1-5 parts of phenyltrissilane, 5-10 parts of dimethyl dibutanoneoximido silane and 0.5-1.5 parts of an organic tin catalyst. A nuclear power plant internal sealing structure comprises a CV steel plate and a concrete wall, and further comprises silicone sealant, wherein a pit is formed in a joint of the concrete wall and the CV steel plate; the silicone sealant is arranged in the pit. The special silicone sealant has the beneficial effects that after being subjected to 60-year accumulated irradiation dose of the nuclear power plant and a LOCA test, the special silicone sealant is free of pulverization and degradation, has good adhesive property and flexibility; during the process of stimulating the 66psig (455kPa) pressure intensity inside the CV, lin (25.4mm) relative displacement is generated between the CV and the concrete, so that good watertight and gastight performances are ensured.
Description
Technical field
The present invention relates to nuclear power field, particularly relate to the structure of the special silicone sealant of a kind of nuclear power plant internal structure and sealing thereof.
Background technology
Containment building (CV) inner side and outer side of nuclear power plant contacts with concrete at different level place, in order to the surface preventing moisture infiltration steel plate from contacting with concrete, and then causes the corrosion on CV surface, needs to arrange corresponding sealing at these seam crossings.Also for ease of and prevent moisture from entering gap between steel plate in the steel plate concrete structure (as CA module) of other classifications and concrete, cause the corrosion of Steel Facing, also need to arrange sealing at these positions.
Sealing material inside CV is except meeting the envrionment conditions under accidental conditions, also need to ensure it under particular circumstances (as LOCA accident conditions, 60 years accumulation radiation environments etc.), there is not efflorescence, degraded, have good viscosifying power and retractility.In addition, during the displacement that this material supposes when there is SIT test, satisfactory resistance to air loss and watertightness should be had, preventing CV surface under extreme operating condition, corrosion failure occurring.And in the prior art, also there is not the seal gum that can meet above all demands.
Summary of the invention
The present invention is exactly to solve the problem, and overcomes the sealing problem of nuclear power plant's internal structure in prior art, the invention provides the structure of the special silicone sealant of a kind of nuclear power plant internal structure and sealing thereof to satisfy the demands.
To achieve these goals, technical scheme of the present invention is as follows:
The silicone sealant that nuclear power plant's internal structure is special, is characterized in that, comprises each component of following ratio of quality and the number of copies:
The silicone sealant that above-mentioned a kind of nuclear power plant internal structure is special, is characterized in that, the ratio of quality and the number of copies of each component is:
The silicone sealant that above-mentioned a kind of nuclear power plant internal structure is special, is characterized in that, the ratio of quality and the number of copies of each component is:
The silicone sealant that above-mentioned a kind of nuclear power plant internal structure is special, is characterized in that, the ratio of quality and the number of copies of each component is:
The silicone sealant that above-mentioned a kind of nuclear power plant internal structure is special, is characterized in that, the ratio of quality and the number of copies of each component is:
The silicone sealant that above-mentioned a kind of nuclear power plant internal structure is special, is characterized in that, the ratio of quality and the number of copies of each component is:
A kind of nuclear power plant's internal seal structure of the silicone sealant containing claim 1, comprise CV steel plate and concrete walls, it is characterized in that, also comprise silicone sealant, the junction of described concrete walls and CV steel plate is provided with depression, is provided with silicone sealant in depression.
Nuclear power plant's internal seal structure of above-mentioned a kind of silicone sealant containing claim 1, it is characterized in that, the width of described depression is 30-80mm, is highly 30-80mm.
Nuclear power plant's internal seal structure of above-mentioned a kind of silicone sealant containing claim 1, it is characterized in that, the width of described depression is 50mm, is highly 50mm.
The invention has the beneficial effects as follows: after standing the irradiation integral dose of 60 year phase in longevity of Nuclear power plants and LOCA test, without efflorescence, degraded, still there is good adhesive property and retractility; Under the pressure of the inner 66psig (455kPa) of simulation CV, there is the relative displacement of 1in (25.4mm) between CV and concrete, can good watertight, air-tightness be ensured.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Embodiment
The technique means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
The silicone sealant that nuclear power plant's internal structure is special, comprises each component of following ratio of quality and the number of copies:
Embodiment 1:
The silicone sealant that above-mentioned a kind of nuclear power plant internal structure is special, the ratio of quality and the number of copies of each component is:
Embodiment 2:
The silicone sealant that above-mentioned a kind of nuclear power plant internal structure is special, the ratio of quality and the number of copies of each component is:
Embodiment 3:
The silicone sealant that above-mentioned a kind of nuclear power plant internal structure is special, the ratio of quality and the number of copies of each component is:
Embodiment 4:
The silicone sealant that above-mentioned a kind of nuclear power plant internal structure is special, the ratio of quality and the number of copies of each component is:
Embodiment 5:
The silicone sealant that above-mentioned a kind of nuclear power plant internal structure is special, the ratio of quality and the number of copies of each component is:
The sealing material that reactor housing inside uses should make there is good watertightness between concrete and reactor housing Steel Facing.When carrying out pressure conditions and being SIT test (structural integrity test) of 0.455Mpa (66psig), assuming that there is the relative displacement of 25.4mm (1in) between CV and concrete, now require that the sealing material being arranged on reactor housing inside does not destroy under this relative displacement, and damage is caused to the miscellaneous part of surrounding, and ensure certain resistance to air loss and watertightness.But sealing material does not require still to keep its resistance to air loss and watertightness under LOCA operating mode.
Under DBA operating mode, require the sealing of CV inside and seal gum that comminuted destruction does not occur, change into liquid or degraded, and can ensure that the sealing material after destroying still remains in foramen primum groove.
When the sealing material of reactor housing outside is arranged between CV Steel Facing and concrete, require that it has good watertightness performance.
For the sealing material (between CA Steel Facing and inner side concrete) being arranged on CA module, require that it has good watertightness.Elasticity for sealing material does not have specific requirement.
The sealing material that uses in the sealing material used for reactor housing inner side and outer side and CA module, requires that it can assurance function integrity at accidental conditions temperature condition (10 DEG C (50 °F) are to 49 DEG C (120 °F)).When DBA working temperature condition (inside CV 178.5 DEG C (353 °F), outside CV 149 DEG C (300 °F)), do not degrade.
For the sealing material that CV inside uses, its 60 years accumulation irradiation dose maximum values are 1.5 × 10
6rad.For CV inside (CA module) sealing material, its 60 years accumulation irradiation dose maximum values are 4 × 10
6rad.
For this reason, according to above technical requirements, sealing material provided by the invention, by meeting following requirement, provides nuclear power plant's environment for use and the sealing material under requiring:
Effect of the present invention is:
1, research and develop successful FS-LM silicone seal plastic structure jointing material and meet AP1000 design requirements.
2, after the product of research and development stands the irradiation integral dose of 60 year phase in longevity of Nuclear power plants and LOCA test, without efflorescence, degraded, still there is good adhesive property and retractility;
3, product is under the pressure of the inner 66psig (455kPa) of simulation CV, the relative displacement of 1in (25.4mm) occurs between CV and concrete, can ensure good watertight, air-tightness;
Referring to Fig. 1, nuclear power plant's internal seal structure containing silicone sealant, comprises CV steel plate 100 and concrete walls 200, also comprises silicone sealant 300, concrete walls 200 are provided with depression 400 with the junction of CV steel plate 100, are provided with silicone sealant 300 in depression 400.
The width of depression 400 is 30-80mm, is highly 30-80mm.
In one of them preferred implementation of the present invention, the width of depression 400 is 50mm, is highly 50mm.
The invention has the beneficial effects as follows: after standing the irradiation integral dose of 60 year phase in longevity of Nuclear power plants and LOCA test, without efflorescence, degraded, still there is good adhesive property and retractility; Under the pressure of the inner 66psig (455kPa) of simulation CV, there is the relative displacement of 1in (25.4mm) between CV and concrete, can good watertight, air-tightness be ensured.
More than show and describe ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (9)
1. the silicone sealant that nuclear power plant's internal structure is special, is characterized in that, comprises each component of following ratio of quality and the number of copies:
2. the silicone sealant that a kind of nuclear power plant internal structure is special according to claim 1, is characterized in that, the ratio of quality and the number of copies of each component is:
3. the silicone sealant that a kind of nuclear power plant internal structure is special according to claim 1, is characterized in that, the ratio of quality and the number of copies of each component is:
4. the silicone sealant that a kind of nuclear power plant internal structure is special according to claim 1, is characterized in that, the ratio of quality and the number of copies of each component is:
5. the silicone sealant that a kind of nuclear power plant internal structure is special according to claim 1, is characterized in that, the ratio of quality and the number of copies of each component is:
6. the silicone sealant that a kind of nuclear power plant internal structure is special according to claim 1, is characterized in that, the ratio of quality and the number of copies of each component is:
7. nuclear power plant's internal seal structure of the silicone sealant containing claim 1, comprise CV steel plate and concrete walls, it is characterized in that, also comprise silicone sealant, the junction of described concrete walls and CV steel plate is provided with depression, is provided with silicone sealant in depression.
8. nuclear power plant's internal seal structure of a kind of silicone sealant containing claim 1 according to claim 7, it is characterized in that, the width of described depression is 30-80mm, is highly 30-80mm.
9. nuclear power plant's internal seal structure of a kind of silicone sealant containing claim 1 according to claim 7, it is characterized in that, the width of described depression is 50mm, is highly 50mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510246549.3A CN104830269B (en) | 2015-05-14 | 2015-05-14 | A kind of special silicone sealant of nuclear power plant's internal structure and its sealing structure |
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| CN201510246549.3A CN104830269B (en) | 2015-05-14 | 2015-05-14 | A kind of special silicone sealant of nuclear power plant's internal structure and its sealing structure |
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| CN104830269A true CN104830269A (en) | 2015-08-12 |
| CN104830269B CN104830269B (en) | 2018-01-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111534273A (en) * | 2020-05-25 | 2020-08-14 | 佛山市元通胶粘实业有限公司 | Organosilicon flame-retardant sealant for buildings |
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| CN1438289A (en) * | 2003-03-06 | 2003-08-27 | 成都硅宝科技实业有限责任公司 | Neutral silicone fire-retardent sealing glue and its preparing method |
| CN1687288A (en) * | 2005-04-13 | 2005-10-26 | 成都硅宝科技实业有限责任公司 | Flameproofing silicone structure sealant and mfg. method thereof |
| CN101985550A (en) * | 2010-11-05 | 2011-03-16 | 江苏天源华威电气集团公司 | One-component room temperature vulcanizing silicone fireproof sealant and preparation method thereof |
| CN103122239A (en) * | 2011-11-18 | 2013-05-29 | 镇江亿致能源科技有限公司 | High-density room temperature vulcanization two-component silicone sealant used in nuclear power station and preparation process thereof |
-
2015
- 2015-05-14 CN CN201510246549.3A patent/CN104830269B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1438289A (en) * | 2003-03-06 | 2003-08-27 | 成都硅宝科技实业有限责任公司 | Neutral silicone fire-retardent sealing glue and its preparing method |
| CN1687288A (en) * | 2005-04-13 | 2005-10-26 | 成都硅宝科技实业有限责任公司 | Flameproofing silicone structure sealant and mfg. method thereof |
| CN101985550A (en) * | 2010-11-05 | 2011-03-16 | 江苏天源华威电气集团公司 | One-component room temperature vulcanizing silicone fireproof sealant and preparation method thereof |
| CN103122239A (en) * | 2011-11-18 | 2013-05-29 | 镇江亿致能源科技有限公司 | High-density room temperature vulcanization two-component silicone sealant used in nuclear power station and preparation process thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111534273A (en) * | 2020-05-25 | 2020-08-14 | 佛山市元通胶粘实业有限公司 | Organosilicon flame-retardant sealant for buildings |
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| CN104830269B (en) | 2018-01-12 |
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