CN101387748B - Seal structure for tank periscopic lens - Google Patents

Seal structure for tank periscopic lens Download PDF

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Publication number
CN101387748B
CN101387748B CN2008102249206A CN200810224920A CN101387748B CN 101387748 B CN101387748 B CN 101387748B CN 2008102249206 A CN2008102249206 A CN 2008102249206A CN 200810224920 A CN200810224920 A CN 200810224920A CN 101387748 B CN101387748 B CN 101387748B
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CN
China
Prior art keywords
flux sleeve
tank
pole shoe
diameter end
boot
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2008102249206A
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Chinese (zh)
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CN101387748A (en
Inventor
李德才
董国强
蔡玉强
黄彦
李强
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Beijing Jiaotong University
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Beijing Jiaotong University
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Publication date
Application filed by Beijing Jiaotong University filed Critical Beijing Jiaotong University
Priority to CN2008102249206A priority Critical patent/CN101387748B/en
Publication of CN101387748A publication Critical patent/CN101387748A/en
Application granted granted Critical
Publication of CN101387748B publication Critical patent/CN101387748B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

Abstract

The invention discloses a tank panoramic mirror sealing structure, relating to a magnetic liquid sealing structure, which respectively arranges a first O-shaped ring (2) and a second O-shaped ring (7) into two annular slots (12, 13) of a non-magnetic sleeve (9); mounting a right polar boot (8), a permanent magnet (5) and a left polar boot (4) from the small end of the non-magnetic sleeve (9); using a nut (3) to connect the screw of the small end of the non-magnetic sleeve (9) to lock the three elements on the non-magnetic sleeve (9), connecting the non-magnetic sleeve (9) and an direction shaft (1) via screws; sheathing an upper adverse head (10) on the right polar boot (8) and the left polar boot (4) and forming a sealing clearance (6); filling magnetic liquid into the sealing clearance (6) to form a tank panoramic mirror sealing structure. The tank panoramic mirror sealing structure has low resistance moment, simple installment, high reliability, long service life and the ability for realizing zero leakage.

Description

Seal structure for tank periscopic lens
Technical field
The present invention relates to a kind of magnetic liquid sealing structure, especially be applicable to seal structure for tank periscopic lens.
Background technology
Tank is used for Field Operational more, require each parts can be for a long time in operate as normal, because dust and other impurity in the environment are very many, in order to prevent that extraneous dust and impurity from entering in all visors, guarantee the sharpness and the accuracy of all visors, utilize felt to seal up passage between moving part and the stationary part, thereby the moment of resistance during motion is big, quick abrasion causes sealing effectiveness to weaken, and serviceable life is short.
Summary of the invention
In order to overcome the deficiency that all visor moments of resistance of using the felt hermetically-sealed construction are big, non-zero is leakage sealed, the life-span is short, not only the moment of resistance is minimum, easy for installation to the invention provides a kind of structure, and can realize zero leakage, reliability height, long service life.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of seal structure for tank periscopic lens, it is that first round section joint ring is packed on the non-flux sleeve miner diameter end end face in the ring groove, and second round section joint ring packed in the non-flux sleeve bigger diameter end medial surface ring groove;
Successively from the miner diameter end of non-flux sleeve pack into right pole shoe, permanent magnet and left pole shoe, utilize being threaded of nut and non-flux sleeve miner diameter end, with above-mentioned three in addition parts be locked on the non-flux sleeve, non-flux sleeve is threaded with azimuth axis;
Go up anti-head and be enclosed within on the right pole shoe and left pole shoe of above-mentioned assembling, and form seal clearance;
Magnetic liquid is injected in the seal clearance, constitutes seal structure for tank periscopic lens.
The invention has the beneficial effects as follows that the moment of resistance is minimum, easy for installation, can realize zero leakage, reliability height, long service life.
Description of drawings
Fig. 1 is seal structure for tank periscopic lens figure.
Fig. 2 is that amplify the part at the A place of Fig. 1.
Fig. 3 is non-flux sleeve structural drawing.
Fig. 4 is magnet structure figure.
Among the figure: azimuth axis 1, left round section joint ring 2, nut 3, left pole shoe 4, permanent magnet 5, seal clearance 6,, round section joint ring, right pole shoe 8, non-flux sleeve 9, go up anti-head 10.
Embodiment
The invention will be further described in conjunction with the accompanying drawings:
Seal structure for tank periscopic lens is seen Fig. 1.
First round section joint ring 2 is packed on the non-flux sleeve 9 miner diameter end end faces in the ring groove 12, and second round section joint ring 7 packed in the non-flux sleeve 9 bigger diameter end medial surface ring grooves 13;
Successively from the miner diameter end of non-flux sleeve 9 pack into right pole shoe 8, permanent magnet 5 and left pole shoe 4, utilize being threaded of nut 3 and non-flux sleeve 9 miner diameter ends, with above-mentioned three in addition parts be locked on the non-flux sleeve 9, non-flux sleeve 9 is threaded with azimuth axis 1;
Go up anti-head 10 and be enclosed within on the right pole shoe 8 and left pole shoe 4 of above-mentioned assembling, and form seal clearance 6, see Fig. 2;
Magnetic liquid is injected in the seal clearance 6, constitutes seal structure for tank periscopic lens.
Non-flux sleeve 9 is processed by non-magnet materials such as non-magnetic stainless steel, copper, lead, tin, gold, silver or aluminium, and it is a revolving structure, sees that there is through hole at Fig. 3 center, and through-hole inner surface has screw thread, is used for and being connected of azimuth axis 1; One section screw thread is arranged on the miner diameter end external diameter of non-flux sleeve 9, be used for and being connected of nut 3; Non-flux sleeve 9 is provided with two ring grooves: ring groove 12 on the miner diameter end end face, are used to place left round section joint ring 2; Ring groove 13 on the bigger diameter end medial surface, are used to place right round section joint ring 7.
Right pole shoe 8 and left pole shoe 4 are processed by permeability magnetic materials such as magnetic stainless steel, and it is a revolving structure, and there is through hole at the center, and the structure and the size that are processed with 11, two pole shoes of ring pole tooth on the outer ring surface are identical.The utmost point tooth external diameter of two pole shoes cooperates the back to form seal clearance 6 less than the internal diameter of last anti-head 10 blind holes, and seal clearance is 0.1～0.5mm.
Permanent magnet 5 is processed into arc, sheet by rubidium iron boron (NdFeB), forms a loop configuration by three, sees Fig. 4.Or select the piece number according to the diameter of non-flux sleeve 9 miner diameter ends.
Magnetic liquid is general sealing magnetic liquid.
Magnetic liquid is injected into by the good left and right sides pole shoe 4 of high performance permanent magnet 5, magnetic conductivity and 8 and go up in the seal clearance 6 of the magnetic conductive loop that anti-head 10 forms, form several liquid round section joint rings, thereby realize the rotary dynamic seal between azimuth axis 1 and the last anti-head 10.In addition, utilize round section joint ring to prevent to enter all visors the slit between slit, non-flux sleeve 9 and right pole shoe 8 right flanks of introduced contaminants between azimuth axis 1 and non-flux sleeve 9.Sealing structural drag moment pole is little, and is easy for installation, can realize zero leakage, reliability height, long service life.

Claims (2)

1. seal structure for tank periscopic lens is characterized in that:
First round section joint ring (2) is packed on non-flux sleeve (9) the miner diameter end end face in the ring groove (12), and second round section joint ring (7) packed in non-flux sleeve (9) the bigger diameter end medial surface ring groove (13);
Successively from the miner diameter end of non-flux sleeve (9) pack into right pole shoe (8), permanent magnet (5) and left pole shoe (4), utilize being threaded of nut (3) and non-flux sleeve (9) miner diameter end, above-mentioned three parts are locked on the non-flux sleeve (9), and non-flux sleeve (9) is threaded with azimuth axis (1);
Go up anti-head (10) and be enclosed within on the right pole shoe (8) and left pole shoe (4) of above-mentioned assembling, and form seal clearance (6);
Magnetic liquid is injected in the seal clearance (6), constitutes seal structure for tank periscopic lens.
2. a kind of seal structure for tank periscopic lens according to claim 1 is characterized in that: the center of non-flux sleeve (9) is a through hole, and through-hole inner surface is a screw thread; One section screw thread is arranged on the miner diameter end external diameter of non-flux sleeve (9).
CN2008102249206A 2008-10-27 2008-10-27 Seal structure for tank periscopic lens Expired - Fee Related CN101387748B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2008102249206A CN101387748B (en) 2008-10-27 2008-10-27 Seal structure for tank periscopic lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2008102249206A CN101387748B (en) 2008-10-27 2008-10-27 Seal structure for tank periscopic lens

Publications (2)

Publication Number Publication Date
CN101387748A CN101387748A (en) 2009-03-18
CN101387748B true CN101387748B (en) 2010-09-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2008102249206A Expired - Fee Related CN101387748B (en) 2008-10-27 2008-10-27 Seal structure for tank periscopic lens

Country Status (1)

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CN (1) CN101387748B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105387213A (en) * 2015-12-30 2016-03-09 北京交通大学 Magnetic liquid and mechanical seal combined sealing device applied to nuclear reactor main pump seal

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201278046Y (en) * 2008-10-27 2009-07-22 北京交通大学 Seal structure for tank periscopic lens

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201278046Y (en) * 2008-10-27 2009-07-22 北京交通大学 Seal structure for tank periscopic lens

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Granted publication date: 20100908

Termination date: 20211027