CN1937096A - High-current leading insulation sealing device - Google Patents
High-current leading insulation sealing device Download PDFInfo
- Publication number
- CN1937096A CN1937096A CNA2006101135317A CN200610113531A CN1937096A CN 1937096 A CN1937096 A CN 1937096A CN A2006101135317 A CNA2006101135317 A CN A2006101135317A CN 200610113531 A CN200610113531 A CN 200610113531A CN 1937096 A CN1937096 A CN 1937096A
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- CN
- China
- Prior art keywords
- current leading
- sealing device
- insulation sealing
- housing
- seal
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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
- Y02E30/30—Nuclear fission reactors
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Abstract
Belonging to area of modular experimental equipment of ball bed high temperature gas cooled ractor, the invention is especially related to insulation sealing arrangement for leading electricity in high current. The arrangement is composed of seal housing, subassembly of leading electricity, flange and clamp nut. Soldering thick shell body and fine shell body inserted to the thick body produces the seal housing. The subassembly is made through steps: setting up blocking pieces at two ends of leading electrode; sheathing insulator on two ends; wrapping gaskets, blocking pieces; impacting by clamp nut. Inserting the subassembly to the fine shell body and soldering gaskets on two ends of fine shell body so as to form vacuum box. Soldering terminal pad on one end of the thick shell body and then connecting it to seal ring and flange by bolts forms the arrangement. The invention solves issues of seal and insulation. Thus, each related important experiment could be carried out successfully.
Description
Technical field
The invention belongs to modular pebble bed high temperature reactor experimental facilities scope, particularly a kind of high-current leading insulation sealing device.
Background technology
The 10MW high temperature gas cooled reactor that Tsing-Hua University's nuclear grinds institute's development is the present experimental reactor of first modular pebble bed high temperature reactor in the world.The instability of steam generator tube fluid flows and not only can cause the evaporator heat transfer deterioration in the high temperature gas-cooled experimental reactor of 10MW, but also can not provide stable thermal parameter for steam turbine, even the safe operation of entail dangers to reactor.So, must carry out evaporator two-phase flow stability confirmatory experiment, for the selection and the safety analysis of high temperature nuclear reactor operational factor provides experimental basis.The high temperature helium with in other important experiments relevant with high temperature nuclear reactor that key lab of the advanced Nuclear Reactor Engineering and Safety Ministry of Education of Tsing-Hua University carries out obtains with electrical heating method.The about 5000A of electric current-carrying capacity that wherein runs through electric heater pressure vessel electrode, the sealing of major diameter electrode penetration piece and insulation are gordian techniquies.The sealed insulation problem that has major diameter electrode penetration piece in the research of high temperature nuclear reactor helium Circuit Simulated Experiment, relating to the inside heating of high temperature, high-pressure system simultaneously, the heating of toxic gas, the occasions such as heating of high osmosis gas also exist sealing and Insulation Problems, and therefore the technology of invention is widely used.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, and provide a kind of high-current leading insulation sealing device, be made up of seal casinghousing, high-current leading electricity assembly, flange and gland nut, it is characterized in that, described seal casinghousing inserts thick housing 11 by thin housing 6 and is welded; Draw electrode 5 two one catch respectively is set, overlap upper insulator 4, spirally wound gasket 3, back-up ring 2 respectively drawing electrode 5 two, compress with gland nut 1 again and form a high-current leading electricity assembly; This high-current leading electricity assembly is inserted in the thin housing 6, and two spirally wound gaskets 3 weld with thin housing 6 two ends respectively, form vacuum chamber 9; At an end excircle seal welding terminal pad 16 of thick housing 11, be connected to form hyperbaric chamber 10 by bolt and O-ring seal 17 and flange 12.
Be sealed with pressure guiding pipe 13, heating element 14 and gas-filled tube 15 on the described flange 12.
Stop valve 7 and tensimeter 8 are installed on the excircle of described thin housing 6.
Described insulator 4 is a processable ceramic.
Described spirally wound gasket 3 is the soft graphite wound gasket.
Described soft graphite wound gasket is at 500 ℃, and under the 6MPa condition of work, its slip is lower than 5.6 * 10
-6Pa.m
3/ s.
The seal welding that is welded as at the welding of described thin housing and thick housing, spirally wound gasket and housing two ends carefully.
Described high-current leading electricity assembly insulate by ceramic gasket.
The invention has the beneficial effects as follows at the sealing of electrode penetration piece and Insulation Problems and designed high-current leading insulation sealing device, overcome the sealing and the Insulation Problems of major diameter electrode penetration piece, make that every relevant important experiment is smooth.The present invention has played dual effect, and the first, then can reflect the insulation and sealing structure slip level that links to each other with the electric heater pressure vessel by device upward pressure table monitoring device internal pressure escalating rate, in time overhauling the assurance that provides strong.Second pressure reduction that has reduced the insulation and sealing structure that links to each other with the electric heater pressure vessel is more conducive to sealing, because the pressure in the device is higher than atmosphere, having improved links to each other with atmosphere holds the sealing effectiveness of insulation and sealing structure.
Description of drawings
Fig. 1 is the high-current leading insulation sealing device structural drawing.
Embodiment
The invention provides a kind of high-current leading insulation sealing device, form by seal casinghousing, high-current leading electricity assembly, flange and gland nut.In high-current leading insulation sealing device structural drawing shown in Figure 1.Seal casinghousing inserts thick housing 11 by thin housing 6 and is welded; Draw electrode 5 two one catch respectively is set, overlap upper insulator 4, spirally wound gasket 3, back-up ring 2 respectively drawing electrode 5 two, compress with gland nut 1 again and form a high-current leading electricity assembly; This high-current leading electricity assembly is inserted in the thin housing 6, and two spirally wound gaskets 3 weld with thin housing 6 two ends respectively, form vacuum chamber 9, on the excircle of thin housing 6 stop valve 7 and tensimeter 8 are installed; Stop valve 7 can connect vacuum system, at an end excircle seal welding terminal pad 16 of thick housing 11, is connected to form hyperbaric chamber 10 by bolt and O-ring seal 17 and flange 12.Be sealed with pressure guiding pipe 13, heating element 14 and gas-filled tube 15 on the flange 12.The seal welding that is welded as at the welding of the above thin housing and thick housing, spirally wound gasket and housing two ends carefully.Described high-current leading electricity assembly insulate by ceramic gasket.
As shown in Figure 1.Wherein the material selection of insulator is a processable ceramic, and it has good insulating property, can machining, have bigger compressive strength, and also at high temperature indeformable, not oxidation, thermal shock resistance is good.Insulator with housing with draw electrode and separate, gasket seal is the soft graphite wound gasket, it can be at 500 ℃, 6Mpa is work down, its slip is lower than 5.6 * 10
-6Pa.m
3/ s.Can also fill air pressure with in the device, make pressure in the device be lower than the pressure in the electric heater pressure vessel, the purpose in hyperbaric chamber provides pressure compensation, reducing and the differential pressure of high pressure vessel part, even is higher than the pressure of high pressure vessel, in case the stopping leak leakage.Whether the purpose of vacuum chamber has two, before system devotes oneself to work vacuum chamber is evacuated, by manometric reading indicated pressure, intact with the sealing of determination component; In addition, in system's normal work period, pour gas in the vacuum chamber, pressure equates with the hyperbaric chamber, helps preventing that gas from leaking.
Main feature of the present invention is the selection of insulating materials, gasket seal, and can pressurising in device. So both can satisfy the requirement of big electric current, can satisfy simultaneously again the requirement of air seal.
Claims (8)
1. a high-current leading insulation sealing device is made up of seal casinghousing, high-current leading electricity assembly, flange and gland nut, it is characterized in that described seal casinghousing inserts thick housing (11) by thin housing (6) and is welded; Draw electrode (5) two one catch respectively is set, overlap upper insulator (4), spirally wound gasket (3), back-up ring (2) respectively drawing electrode (5) two, use gland nut (1) to compress again and form a high-current leading electricity assembly; This high-current leading electricity assembly is inserted in the thin housing (6), and two spirally wound gaskets (3) weld with thin housing (6) two ends respectively, form vacuum chamber (9); At an end excircle seal welding terminal pad (16) of thick housing (11), be connected to form hyperbaric chamber (10) by bolt and O-ring seal (17) and flange (12).
2. according to the described high-current leading insulation sealing device of claim 1, it is characterized in that, be sealed with pressure guiding pipe (13), heating element (14) and gas-filled tube (15) on the described flange (12).
3. according to the described high-current leading insulation sealing device of claim 1, it is characterized in that, stop valve (7) and tensimeter (8) are installed on the excircle of described thin housing (6).
4. according to the described high-current leading insulation sealing device of claim 1, it is characterized in that described insulator (4) is a processable ceramic.
5. according to the described high-current leading insulation sealing device of claim 1, it is characterized in that described spirally wound gasket (3) is the soft graphite wound gasket.
6. according to the described high-current leading insulation sealing device of claim 1, it is characterized in that described soft graphite wound gasket is at 500 ℃, under the 6MPa condition of work, its slip is lower than 5.6 * 10
-6Pa.m
3/ s.
7. according to the described high-current leading insulation sealing device of claim 1, it is characterized in that the seal welding that is welded as at the welding of described thin housing and thick housing, spirally wound gasket and housing two ends carefully.
8. according to the described high-current leading insulation sealing device of claim 1, it is characterized in that described high-current leading electricity assembly insulate by ceramic gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101135317A CN1937096A (en) | 2006-09-29 | 2006-09-29 | High-current leading insulation sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101135317A CN1937096A (en) | 2006-09-29 | 2006-09-29 | High-current leading insulation sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1937096A true CN1937096A (en) | 2007-03-28 |
Family
ID=37954532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101135317A Pending CN1937096A (en) | 2006-09-29 | 2006-09-29 | High-current leading insulation sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1937096A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106936253A (en) * | 2015-12-31 | 2017-07-07 | 江苏核电有限公司 | A kind of generator unit stator penetration piece |
-
2006
- 2006-09-29 CN CNA2006101135317A patent/CN1937096A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106936253A (en) * | 2015-12-31 | 2017-07-07 | 江苏核电有限公司 | A kind of generator unit stator penetration piece |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |