CN104344120A - Hermetic connecting device and method for high-temperature fused salt - Google Patents
Hermetic connecting device and method for high-temperature fused salt Download PDFInfo
- Publication number
- CN104344120A CN104344120A CN201410456294.9A CN201410456294A CN104344120A CN 104344120 A CN104344120 A CN 104344120A CN 201410456294 A CN201410456294 A CN 201410456294A CN 104344120 A CN104344120 A CN 104344120A
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- China
- Prior art keywords
- flange plate
- flange
- seal
- seal connection
- ring
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
The invention relates to a hermetic connecting device for high-temperature fused salt. The hermetic connecting device comprises a first flange and a second flange which are paired, wherein a clearance ring surface is formed between the first flange and the second flange, ring grooves are respectively formed in the sealing surfaces of the first flange and the second flange in corresponding positions, ring gaskets are arranged in the ring grooves, and the first flange and the second flange are fastened together through hoops or bolts. The invention further provides a hermetic connecting method for high-temperature fused salt. Cooling condensation is carried out on the high-temperature fused salt by the clearance ring surface, so that sealing rings are formed to seal the fused salt. The condition that the ring gaskets are in failure after being subjected to corrosion by the high-temperature fused salt is avoided and the high sealing performance of flange connection using the high-temperature fused salt as a medium can be effectively realized.
Description
Technical field
The present invention relates to the fused salt field that chemical industry, metallurgy, solar energy and nuclear energy industry etc. use, relate more specifically to the seal connection for high-temperature molten salt and method thereof.
Background technique
Fused salt refers to the melt that salt fusing is formed, have a series of features such as high-temperature stability is good, thermal conductivity is high, good thermal conduction, specific heat are large, boiling point is high, its biography heat storage medium as high temperature high heat flux is widely applied in high temeperature chemistry hydrogen manufacturing, nuclear reactor, solar energy heat-storage, nuclear fuel reprocessing, fuel cell equal energy source field and chemical industry metallurgical industry.
Seal connection is equipment and equipment, equipment and pipeline, the important way be connected between pipeline with pipeline.Existing seal connection comprises the first flange plate and second flange plate of pairing, and the gasket sheet between the sealing surface being fitted in the first flange plate and the second flange plate, this first flange plate and the second flange plate are respectively by together with bolton, wherein, this gasket sheet is Graphite pad or metallic shim, the internal diameter of its internal diameter and first, second flange plate is roughly equal, and the spring-back force of pad is the key of the sealing realizing fluid system (water, wet goods).
For fused salt class fluid, because the temperature of fused-salt medium is high, corrosivity is strong, existing seal connection can not realize its function that is tightly connected, its reason is: on the one hand, the existing Graphite pad being suitable for high-temperature molten salt medium is oxidizable 400 DEG C time causes seal failure, and the serviceability temperature scope of fused-salt medium is higher, usually between 50-1300 DEG C, therefore, Graphite pad can not at high temperature long-term work; On the other hand, existing metallic shim is perishable aging, and the corrosivity of fused-salt medium is strong, and therefore, metallic shim cannot meet the sealing technique requirement of fused-salt medium.
Summary of the invention
Poor in high-temperature molten salt operating mode seal performance in order to what solve that above-mentioned prior art exists, seal the problems such as unreliable, the present invention aims to provide seal connection for high-temperature molten salt and method thereof.
The invention provides the seal connection for high-temperature molten salt, comprise the first flange plate and second flange plate of pairing, space anchor ring is formed between described first flange plate and the second flange plate, the sealing surface of described first flange plate and the second flange plate is respectively equipped with circular groove corresponding to position, be provided with ring pad in this circular groove, described first flange plate passes through together with clip or bolton with the second flange plate.
Described first flange plate and described second flange plate have corresponding positioning pin hole, and locating stud inserts the location that described positioning pin hole realizes described first flange plate and the second flange plate.
The external margin of contiguous described first flange plate of described positioning pin hole or described second flange plate is arranged.
The internal diameter of described ring pad is greater than the internal diameter of first, second flange plate described.
The diameter of described space anchor ring is the 1/2-5/6 of the diameter of first, second flange plate.
Described second flange plate is provided with leak hunting aperture.
The present invention is also provided for the seal connecting method of high-temperature molten salt, and described seal connecting method comprises and utilizes above-mentioned seal connection to seal, and wherein, high-temperature molten salt is cooled and solidified in the anchor ring of described space.Thus realize being tightly connected by this fused salt solidified.
First, second flange plate described is metal flange or nonmetallic flange disc.
Described ring pad is the various pads such as rubber sheet gasket, Graphite pad, Tetrafluoro spacer, ceramic gasket or metal ring pad.
The present invention utilizes space anchor ring to carry out cooled and solidified to high-temperature molten salt, thus formation seal ring seals fused salt, avoids the failure conditions of ring pad under high-temperature molten salt corrosion, effectively can realize the sealing of high-temperature molten salt as the Flange joint of medium.The present invention is solidified on the radially outer position of position by ring pad being arranged at fused salt completely, avoid ring pad directly to contact with fused salt, make ring pad can not by fused salt corrosion, and the temperature at this ring pad place reduces greatly, do not affect the sealability of ring pad, can seal reliably.In a word, seal connection for high-temperature molten salt of the present invention utilizes the principle of " cool-solidify " of high-temperature molten salt self to realize sealing, only need the diameter suitably increasing flange plate, fused salt can be solidified completely when reaching certain radial radius, structure is simple, zero leakage and interchangeability is good, when this ring pad Long-Time Service produces tired, dismounting flange plate that can be easier and clip, replace ring pad and do not affect the performance of flange plate.
Accompanying drawing explanation
Fig. 1 is the structural representation according to the seal connection for high-temperature molten salt of the present invention;
Fig. 2 is the partial enlarged drawing of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, provide preferred embodiment of the present invention, and be described in detail.
Fig. 1 shows according to the seal connection for high-temperature molten salt of the present invention, comprises the first flange plate 1 and the second flange plate 2 of pairing, also comprises clip 3, space anchor ring 4, ring pad 5, locating stud 6 and leak hunting aperture 7.The sealing surface of the first flange plate 1 and the second flange plate 2 is respectively equipped with circular groove corresponding to position, and ring pad 5 is arranged in this circular groove, thus defines space anchor ring 4 by the first flange plate 1 and the second flange plate 2.The high-temperature molten salt flowing through sealing connection set can along this space anchor ring 4 Radial Flow, because the radially outward temperature along flange plate reduces gradually, after the temperature of fused salt is cooled to fused salt setting temperature, solidifies fused salt and form annular seal ring, play sealing fused salt effect.See Fig. 2, fused salt is along the direction of arrow flowing in figure, convenient in order to describe, the position being started to solidify by fused salt is defined as first and solidifies position 8, the position that fused salt solidifies completely is defined as second and solidifies position 9, the diameter of this ring pad 5 is at least greater than this second diameter solidifying position 9, preferably near the outer edge of flange plate.
First flange plate 1 and the second flange plate 2 are tightened together by clip 3 (also can pass through bolt).In the present embodiment, clip 3 surrounds the external margin of the first flange plate 1 and the second flange plate 2, thus prevents extraneous air and water etc. from entering between the first flange plate 1 and the second flange plate 2.First flange plate 1 and the second flange plate 2 have corresponding positioning pin hole, and locating stud 6 inserts the relative positioning that this positioning pin hole realizes the first flange plate 1 and the second flange plate 2.The external margin that this positioning pin hole is depicted as contiguous first flange plate 1 is arranged.The internal diameter of ring pad 5 is much larger than the internal diameter of first, second flange plate 1,2, and in the present embodiment, the diameter of the space anchor ring 4 formed is the 1/2-5/6 of the diameter of first, second flange plate 1,2, and preferably 2/3.This second flange plate 2 is provided with leak hunting aperture 7, and the setting of this leak hunting aperture 7 is identical with the leak hunting aperture structure of existing seal connection, does not repeat them here.
The present invention is also provided for the seal connecting method of high-temperature molten salt, comprises and utilizes above-mentioned seal connection to seal, and wherein, high-temperature molten salt is cooled and solidified in the anchor ring of described space.When high-temperature molten salt is for having corrosive fluoride salt, first, second flange plate described and described ring pad adopt nickel-bass alloy material; When high-temperature molten salt is the more weak nitrate of high temperature corrosion, first, second flange plate described and described ring pad adopt stainless steel material.In fact, this first, second flange plate can be metal flange or nonmetallic flange disc.This ring pad can be the various pads such as rubber sheet gasket, Graphite pad, Tetrafluoro spacer, ceramic gasket or metal ring pad
Should be appreciated that, the described seal connection for high-temperature molten salt can be cooled with pressure by any cooling naturally, and as air cooling, air-cooled, water-cooled, the types of cooling such as air cooling realize the cooling to space anchor ring.Solidify the realization of cooling in order to ensure this, be 2-10 times of conventional flange plate according to the first flange plate 1 of the present invention and the second flange plate 2 card diameter under natural cool condition; And the card diameter under pressure cool condition is 2-5 times of conventional flange.In addition, anyly comprise nitrate, fluoride salt, chlorate, carbonite, the fusing points such as sulphate all can be used as fused salt of the present invention higher than the various fused salts of 50 DEG C.
Above-described, be only preferred embodiment of the present invention, and be not used to limit scope of the present invention, the above embodiment of the present invention can also make a variety of changes.Namely every claims according to the present patent application and description are done simple, equivalence change and modify, and all fall into the claims of patent of the present invention.The not detailed description of the present invention be routine techniques content.
Claims (9)
1. the seal connection for high-temperature molten salt, described seal connection comprises the first flange plate and second flange plate of pairing, it is characterized in that, space anchor ring is formed between described first flange plate and the second flange plate, the sealing surface of described first flange plate and the second flange plate is respectively equipped with circular groove corresponding to position, be provided with ring pad in this circular groove, described first flange plate passes through together with a clip or bolton with the second flange plate.
2. seal connection according to claim 1, is characterized in that, described first flange plate and described second flange plate have corresponding positioning pin hole, and locating stud inserts the location that described positioning pin hole realizes described first flange plate and the second flange plate.
3. seal connection according to claim 2, is characterized in that, the external margin of contiguous described first flange plate of described positioning pin hole or described second flange plate is arranged.
4. seal connection according to claim 1, is characterized in that, the internal diameter of described ring pad is greater than the internal diameter of first, second flange plate described.
5. seal connection according to claim 1, is characterized in that, the diameter of described space anchor ring is the 1/2-5/6 of the diameter of first, second flange plate.
6. seal connection according to claim 1, is characterized in that, described second flange plate is provided with leak hunting aperture.
7. for a seal connecting method for high-temperature molten salt, it is characterized in that, described seal connecting method comprises the seal connection of utilization according to any one of claim 1-6 and seals, and wherein, high-temperature molten salt is cooled and solidified in the anchor ring of described space.
8. seal connecting method according to claim 7, is characterized in that, first, second flange plate described is metal flange or nonmetallic flange disc.
9. seal connecting method according to claim 7, is characterized in that, described ring pad is rubber sheet gasket, Graphite pad, Tetrafluoro spacer, ceramic gasket or metal ring pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410456294.9A CN104344120B (en) | 2014-09-09 | 2014-09-09 | Sealing and connecting device and method thereof for high-temperature molten salt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410456294.9A CN104344120B (en) | 2014-09-09 | 2014-09-09 | Sealing and connecting device and method thereof for high-temperature molten salt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104344120A true CN104344120A (en) | 2015-02-11 |
| CN104344120B CN104344120B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410456294.9A Active CN104344120B (en) | 2014-09-09 | 2014-09-09 | Sealing and connecting device and method thereof for high-temperature molten salt |
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| CN (1) | CN104344120B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113735600A (en) * | 2021-08-25 | 2021-12-03 | 中国华能集团清洁能源技术研究院有限公司 | Preparation method of ceramic chip and sealing assembly |
| CN113800920A (en) * | 2021-08-25 | 2021-12-17 | 中国华能集团清洁能源技术研究院有限公司 | Preparation method of ceramic chip and sealing assembly |
| CN113833852A (en) * | 2021-08-25 | 2021-12-24 | 中国华能集团清洁能源技术研究院有限公司 | Seal assembly |
| CN113833854A (en) * | 2021-08-25 | 2021-12-24 | 中国华能集团清洁能源技术研究院有限公司 | Seal assembly |
| CN115076479A (en) * | 2022-06-15 | 2022-09-20 | 中国科学院上海应用物理研究所 | Flange self-sealing device for high-temperature molten salt environment |
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| CN102367871A (en) * | 2011-09-22 | 2012-03-07 | 航天材料及工艺研究所 | Thin-wall flange tongue-and-groove dual-way seal structure of for complex working conditions and applications thereof |
| CN103075587A (en) * | 2013-01-17 | 2013-05-01 | 中国科学院上海应用物理研究所 | Dual-sealing flange |
| CN103398941A (en) * | 2013-08-21 | 2013-11-20 | 中国科学院合肥物质科学研究院 | Bell jar seal liquid heavy metal rotating device |
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- 2014-09-09 CN CN201410456294.9A patent/CN104344120B/en active Active
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| JPS61141781A (en) * | 1984-12-13 | 1986-06-28 | Gunze Ltd | Packing material for sealing |
| JPH0483977A (en) * | 1990-07-26 | 1992-03-17 | Nippon Pillar Packing Co Ltd | Gasket and manufacture thereof |
| JPH0541227A (en) * | 1991-08-05 | 1993-02-19 | Fuji Electric Co Ltd | Solid electrolyte type fuel cell |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113735600A (en) * | 2021-08-25 | 2021-12-03 | 中国华能集团清洁能源技术研究院有限公司 | Preparation method of ceramic chip and sealing assembly |
| CN113800920A (en) * | 2021-08-25 | 2021-12-17 | 中国华能集团清洁能源技术研究院有限公司 | Preparation method of ceramic chip and sealing assembly |
| CN113833852A (en) * | 2021-08-25 | 2021-12-24 | 中国华能集团清洁能源技术研究院有限公司 | Seal assembly |
| CN113833854A (en) * | 2021-08-25 | 2021-12-24 | 中国华能集团清洁能源技术研究院有限公司 | Seal assembly |
| CN113800920B (en) * | 2021-08-25 | 2023-02-28 | 中国华能集团清洁能源技术研究院有限公司 | Preparation method of ceramic chip and sealing assembly |
| CN113833852B (en) * | 2021-08-25 | 2024-02-06 | 中国华能集团清洁能源技术研究院有限公司 | Seal assembly |
| CN113833854B (en) * | 2021-08-25 | 2024-02-06 | 中国华能集团清洁能源技术研究院有限公司 | Seal assembly |
| CN115076479A (en) * | 2022-06-15 | 2022-09-20 | 中国科学院上海应用物理研究所 | Flange self-sealing device for high-temperature molten salt environment |
| CN115076479B (en) * | 2022-06-15 | 2023-09-19 | 中国科学院上海应用物理研究所 | Flange self-sealing device for high-temperature molten salt environment |
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| Publication number | Publication date |
|---|---|
| CN104344120B (en) | 2016-08-24 |
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