CN117212463A - Anti-radiation magnetic liquid sealing device with magnetic liquid storage and supplementing functions - Google Patents
Anti-radiation magnetic liquid sealing device with magnetic liquid storage and supplementing functions Download PDFInfo
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- CN117212463A CN117212463A CN202311257692.3A CN202311257692A CN117212463A CN 117212463 A CN117212463 A CN 117212463A CN 202311257692 A CN202311257692 A CN 202311257692A CN 117212463 A CN117212463 A CN 117212463A
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- magnetic liquid
- pole shoe
- radiation
- peltier
- liquid storage
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- 239000007788 liquid Substances 0.000 title claims abstract description 118
- 238000007789 sealing Methods 0.000 title claims abstract description 65
- 230000003471 anti-radiation Effects 0.000 title claims description 16
- 230000001502 supplementing effect Effects 0.000 title abstract description 5
- 230000005389 magnetism Effects 0.000 claims abstract description 68
- 230000005855 radiation Effects 0.000 claims abstract description 53
- 238000001816 cooling Methods 0.000 claims abstract description 21
- 238000004804 winding Methods 0.000 claims abstract description 16
- 230000005415 magnetization Effects 0.000 claims abstract description 5
- 238000004080 punching Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 6
- 238000011010 flushing procedure Methods 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 239000013589 supplement Substances 0.000 abstract description 5
- 238000011089 mechanical engineering Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- KPLQYGBQNPPQGA-UHFFFAOYSA-N cobalt samarium Chemical compound [Co].[Sm] KPLQYGBQNPPQGA-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 description 1
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention relates to a radiation-resistant magnetic liquid sealing device with a magnetic liquid storage and supplement function, belonging to the technical field of mechanical engineering sealing. The device comprises: the magnetic liquid storage device comprises a rotating shaft, a shell, a clamp spring I, a left bearing, a clamp spring II, a left magnetism isolating sleeve, a stator core I, a winding coil I, a left pole shoe, magnetic liquid, a permanent magnet, a right pole shoe, a stator core II, a winding coil II, an outer magnetism isolating sleeve, an inner magnetism isolating sleeve, a right bearing, an end cover, a clamp spring III, a Peltier III, a magnetic liquid storage bin II, a right sealing ring, peltier II, a radiation-resistant shaft sleeve, a left sealing ring, a magnetic liquid storage bin I and Peltier I. Under the special occasion of nuclear radiation, the radiation-resistant shaft sleeve is used for providing radiation protection for the permanent magnet, the Peltier is used for cooling the permanent magnet and the electromagnet assembly, so that the magnetization performance of the permanent magnet is guaranteed, the magnetic liquid is adsorbed to the pole teeth from the magnetic liquid storage bin for supplementing by utilizing the magnetic field gradient, the sealing performance of the magnetic liquid sealing device is finally guaranteed, and the reliability of the magnetic liquid sealing device is improved.
Description
Technical Field
The invention belongs to the technical field of mechanical engineering sealing, and particularly relates to an anti-radiation magnetic liquid sealing device with a magnetic liquid storage and supplement function.
Background
Sealing is an important technical means for preventing leakage of sealed media from adjacent joint surfaces and preventing external impurities from entering the machine equipment. The magnetic liquid seal is a non-contact seal, and is widely applied to industrial equipment due to the advantages of zero leakage, no pollution, long service life and the like.
In the nuclear energy field, when many devices are operated, the safety protection of nuclear radiation is necessary, and the sealing part has higher radiation resistance requirement. In these special occasions, long-time radiation can cause local temperature rise of the magnetic liquid sealing device, reduce magnetization performance of the permanent magnet, and simultaneously, the radiation can change performance parameters of the magnetic liquid, so that reliability of the magnetic liquid sealing device is finally affected. Therefore, it is necessary to provide a radiation-resistant magnetic liquid sealing device with the functions of magnetic liquid storage and supplement, which can reduce the local temperature.
Disclosure of Invention
The invention provides a radiation-resistant magnetic liquid sealing device with good radiation protection performance, reduced local temperature and magnetic liquid storage and supplement functions, and aims to solve the problem that a series of influences and damages of nuclear radiation environment on the magnetic liquid sealing device are overcome, and the reliability of the sealing device is ensured.
The technical scheme adopted by the invention is as follows: a radiation-resistant magnetic liquid sealing device with magnetic liquid storage and supplement functions is formed by the following steps: rotation axis (1), shell (2), jump ring I (3), left bearing (4), jump ring II (5), left magnetism isolating sleeve (6), stator core I (7), winding coil I (8), left pole shoe (9), magnetic liquid (10), permanent magnet (11), right pole shoe (12), stator core II (13), winding coil II (14), outer magnetism isolating sleeve (15), interior magnetism isolating sleeve (16), right bearing (17), end cover (18), jump ring III (19), peltier III (20), magnetic liquid stores storehouse II (21), right sealing washer (22), peltier II (23), anti-radiation axle sleeve (24), left sealing washer (25), magnetic liquid stores storehouse I (26), peltier I (27).
The connections between the parts making up the device: the right side surface of the left magnetism isolating sleeve (6), the outer side surface of the permanent magnet (11) and the left side surface of the outer magnetism isolating sleeve (15) are correspondingly and uniformly provided with a plurality of Peltier I (27), peltier II (23) and Peltier III (20), so that the left magnetism isolating sleeve (6) with the Peltier I (27), the permanent magnet (11) with the Peltier II (23) and the outer magnetism isolating sleeve (15) with the Peltier III (20) are formed; the winding coil I (8) is wound on the stator core I (7) to form an electromagnet assembly I, and the winding coil II (14) is wound on the stator core II (13) to form an electromagnet assembly II; the outer circular surfaces of the left pole shoe (9) and the right pole shoe (12) are respectively provided with an annular groove, and the left sealing ring (25) and the right sealing ring (22) are respectively arranged in the corresponding grooves to form the left pole shoe (9) with the left sealing ring (25) and the right pole shoe (12) with the right sealing ring (22); the left magnet isolating sleeve (6) with the Peltier I (27), the electromagnet assembly I, the left pole shoe (9) with the left sealing ring (25), the permanent magnet (11) with the Peltier II (23), the anti-radiation shaft sleeve (24), the right pole shoe (12) with the right sealing ring (22), the electromagnet assembly II, the outer magnet isolating sleeve (15) with the Peltier III (20), the inner magnet isolating sleeve (16), the right bearing (17) and the clamp spring III (19) are sequentially arranged on the rotating shaft (1) from left to right and then are arranged in the shell (2); the end cover (18) is connected with the shell (2) by adopting a screw.
Limiting bosses are arranged on the right side of the left pole shoe (9) and the left side of the right pole shoe (12) and provide axial positioning and radial positioning for the permanent magnet (11), and the permanent magnet (11) is positioned between the left pole shoe (9) and the right pole shoe (12); the width of the radiation-resistant shaft sleeve (24) is the same as that of the permanent magnet (11), and the radiation-resistant shaft sleeve is also positioned between the left pole shoe (9) and the right pole shoe (12);
the permanent magnet (11) is an axial magnetizing permanent magnet, the cross section of the permanent magnet is polygonal with a round hole in the center, the length of the longest diagonal of the cross section of the permanent magnet (11) is smaller than the diameter of the inner circular surface of the anti-radiation shaft sleeve (24), and the diameter of a central through hole of the permanent magnet (11) is the same as the diameter of the outer circular surface of the limiting boss on the right side of the left pole shoe (9) and the left side of the right pole shoe (12); the Peltier II (23) is uniformly arranged on the outer side surface of the permanent magnet (11), a plurality of cooling surface punching permanent magnets (11) and gaps between the cooling surface punching permanent magnets (11) and the anti-radiation shaft sleeve (24) are arranged;
the left pole shoe (9) is in a circular ring shape, the right pole shoe (12) is designed into a part of circular ring shape and a part of round table, the proportion of the round table part is 0-100%, the smaller bottom surface of the round table faces to the right side, and the included angle between a round table bus and the horizontal direction is 0-90 degrees; the rotary shaft (1) is provided with a round table type shaft shoulder at a position corresponding to the round table part of the right pole shoe (12), the larger bottom surface of the round table faces to the right, and the round table part of the rotary shaft (1) is parallel to a bus of the round table part of the right pole shoe (12); the rotating shaft (1) is provided with a plurality of pole teeth at the corresponding positions of the left pole shoe (9) and the right pole shoe (12); gaps exist between the pole teeth arranged on the rotating shaft (1) and the inner circular surfaces of the left pole shoe (9) and the right pole shoe (12), and magnetic liquid (10) is injected into the gaps to form magnetic liquid sealing;
the rotary shaft (1) is provided with a circular shaft shoulder at a position corresponding to the electromagnet assembly II, and the diameter of the outer circular surface of the circular shaft shoulder is the same as the diameter of the larger bottom surface of the circular table type shaft shoulder of the rotary shaft (1); gaps exist between the rotating shaft (1) and corresponding positions of inner circles of the electromagnet assemblies I and II, and magnetic liquid is injected into the gaps to form a magnetic liquid storage bin I (26) and a magnetic liquid storage bin II (21);
the left magnetism isolating sleeve (6) is positioned between the left bearing (4) and the electromagnet assembly I, a boss is arranged on the left side of the left magnetism isolating sleeve (6) and is used for providing axial positioning for the outer ring of the left bearing (4); the Peltier I (27) is uniformly arranged on the right side face of the left magnetism isolating sleeve (6), a plurality of cooling surfaces are used for punching gaps between the left magnetism isolating sleeve (6) and the electromagnet assembly I, and the cooling surfaces are used for punching the left magnetism isolating sleeve (6);
the outer magnetism isolating sleeve (15) is positioned between the electromagnet assembly II and the right bearing (17), a boss is arranged on the right side of the outer magnetism isolating sleeve (15), and axial positioning is provided for the outer ring of the right bearing (17); the Peltier III (20) is uniformly arranged on the left side surface of the outer magnetism isolating sleeve (15), a plurality of cooling surfaces are used for punching gaps between the outer magnetism isolating sleeve (15) and the electromagnet assembly II, and the cooling surfaces are used for punching the outer magnetism isolating sleeve (15); the inner magnetism isolating sleeve (16) is of an inverted T-shaped structure and is positioned between the circular shaft shoulder of the rotating shaft (1) and the right bearing (17), and the outer magnetism isolating sleeve (15) and the inner magnetism isolating sleeve (16) are mounted in a matched mode to form a small-section labyrinth seal;
the outer circular surface of the rotating shaft (1) is provided with 3 annular grooves, the clamping springs I (3), the clamping springs II (5) and the clamping springs III (19) are respectively placed in the annular grooves, the clamping springs I (3) and the clamping springs II (5) provide axial positioning for the inner ring of the left bearing (4), and the inner magnetism isolating sleeve (16) and the clamping springs III (19) provide axial positioning for the inner ring of the right bearing (17).
Compared with the common magnetic liquid sealing device, the magnetic liquid sealing device has the following beneficial effects: in the special occasion of nuclear radiation, a radiation-resistant shaft sleeve (24) is used for providing radiation protection for a permanent magnet (11) which is an important part of the magnetic liquid sealing device; when the magnetic liquid sealing device is subjected to local temperature rise caused by radiation, the permanent magnet (11) is cooled by using the Peltier II (23), so that the magnetization performance of the magnetic liquid sealing device is ensured, and the electromagnet assembly I and the electromagnet assembly II are cooled by using the Peltier I (27) and the Peltier III (20), so that the magnetic liquid sealing device runs stably; when the magnetic liquid storage bin I (26) and the magnetic liquid storage bin II (21) are in normal operation, the magnetic fields of the electromagnet assembly I and the electromagnet assembly II are strong, when the performance of the magnetic liquid (10) at the pole teeth is damaged and lost by radiation, the magnetic fields of the electromagnet assembly I and the electromagnet assembly II are reduced, at the moment, the magnetic fields of the permanent magnets (11) are strong, and the magnetic liquid in the magnetic liquid storage bin I (26) and the magnetic liquid storage bin II (21) are adsorbed to the lower pole teeth of the left pole shoe (9) and the right pole shoe (12) for supplementing by utilizing the magnetic field gradient; the right pole shoe (12) and the round table part enable the pole teeth and the magnetic liquid storage bin II (21) to have a certain height difference, so that the magnetic liquid (10) can be conveniently supplemented; the outer magnetism isolating sleeve (15) and the inner magnetism isolating sleeve (16) are matched and installed to form a small-section labyrinth seal, so that the overall sealing effect is enhanced; finally, the sealing performance of the magnetic liquid sealing device is ensured, and the reliability of the magnetic liquid sealing device is improved.
Drawings
FIG. 1 is a schematic diagram of a radiation-resistant magnetic liquid seal device with magnetic liquid storage and replenishment in accordance with an embodiment of the present invention.
In fig. 1: rotation axis (1), shell (2), jump ring I (3), left bearing (4), jump ring II (5), left magnetism isolating sleeve (6), stator core I (7), winding coil I (8), left pole shoe (9), magnetic liquid (10), permanent magnet (11), right pole shoe (12), stator core II (13), winding coil II (14), outer magnetism isolating sleeve (15), interior magnetism isolating sleeve (16), right bearing (17), end cover (18), jump ring III (19), peltier III (20), magnetic liquid stores storehouse II (21), right sealing washer (22), peltier II (23), anti-radiation axle sleeve (24), left sealing washer (25), magnetic liquid stores storehouse I (26), peltier I (27).
FIG. 2 is a cross-sectional view of section A-A of an embodiment of the present invention.
FIG. 3 is a cross-sectional B-B view of an embodiment of the present invention.
Detailed Description
The following detailed description of one embodiment of the invention is merely illustrative of the invention and is not to be construed as limiting the invention in any way. The invention is further described with reference to the accompanying drawings:
the radiation-resistant magnetic liquid sealing device with the magnetic liquid storage and supplementing functions comprises: rotation axis (1), shell (2), jump ring I (3), left bearing (4), jump ring II (5), left magnetism isolating sleeve (6), stator core I (7), winding coil I (8), left pole shoe (9), magnetic liquid (10), permanent magnet (11), right pole shoe (12), stator core II (13), winding coil II (14), outer magnetism isolating sleeve (15), interior magnetism isolating sleeve (16), right bearing (17), end cover (18), jump ring III (19), peltier III (20), magnetic liquid stores storehouse II (21), right sealing washer (22), peltier II (23), anti-radiation axle sleeve (24), left sealing washer (25), magnetic liquid stores storehouse I (26), peltier I (27).
The connections between the parts making up the device: the right side surface of the left magnetism isolating sleeve (6), the outer side surface of the permanent magnet (11) and the left side surface of the outer magnetism isolating sleeve (15) are correspondingly and uniformly provided with a plurality of Peltier I (27), peltier II (23) and Peltier III (20), so that the left magnetism isolating sleeve (6) with the Peltier I (27), the permanent magnet (11) with the Peltier II (23) and the outer magnetism isolating sleeve (15) with the Peltier III (20) are formed; the winding coil I (8) is wound on the stator core I (7) to form an electromagnet assembly I, and the winding coil II (14) is wound on the stator core II (13) to form an electromagnet assembly II; the outer circular surfaces of the left pole shoe (9) and the right pole shoe (12) are respectively provided with an annular groove, and the left sealing ring (25) and the right sealing ring (22) are respectively arranged in the corresponding grooves to form the left pole shoe (9) with the left sealing ring (25) and the right pole shoe (12) with the right sealing ring (22); the left magnet isolating sleeve (6) with the Peltier I (27), the electromagnet assembly I, the left pole shoe (9) with the left sealing ring (25), the permanent magnet (11) with the Peltier II (23), the anti-radiation shaft sleeve (24), the right pole shoe (12) with the right sealing ring (22), the electromagnet assembly II, the outer magnet isolating sleeve (15) with the Peltier III (20), the inner magnet isolating sleeve (16), the right bearing (17) and the clamp spring III (19) are sequentially arranged on the rotating shaft (1) from left to right and then are arranged in the shell (2); the end cover (18) is connected with the shell (2) by adopting a screw.
The radiation-resistant shaft sleeve (24) is made of radiation-resistant materials such as lead, steel, graphite and the like; the width of the radiation-resistant shaft sleeve (24) is the same as that of the permanent magnet (11), and the radiation-resistant shaft sleeve is also positioned between the left pole shoe (9) and the right pole shoe (12) to provide radiation protection for the permanent magnet (11) which is an important part of the magnetic liquid sealing device;
limiting bosses are arranged on the right side of the left pole shoe (9) and the left side of the right pole shoe (12) and provide axial positioning and radial positioning for the permanent magnet (11), and the permanent magnet (11) is positioned between the left pole shoe (9) and the right pole shoe (12); the permanent magnet (11) is made of a material with good radiation resistance and high temperature resistance, such as a samarium cobalt permanent magnet; the permanent magnet (11) is an axial magnetizing permanent magnet, the cross section of the permanent magnet is polygonal with a round hole in the center, the length of the longest diagonal of the cross section of the permanent magnet (11) is smaller than the diameter of the inner circular surface of the anti-radiation shaft sleeve (24), and the diameter of a central through hole of the permanent magnet (11) is the same as the diameter of the outer circular surface of the limiting boss on the right side of the left pole shoe (9) and the left side of the right pole shoe (12); the Peltier II (23) is uniformly arranged on the outer side surface of the permanent magnet (11), a plurality of cooling surface flushing permanent magnets (11) are arranged, the cooling surface flushing permanent magnets (11) and the gaps of the anti-radiation shaft sleeve (24), when the magnetic liquid sealing device causes local temperature rise due to radiation, the Peltier II (23) is used for cooling the permanent magnets (11), so that the magnetization performance of the permanent magnets is ensured;
the left pole shoe (9) is in a circular ring shape, the right pole shoe (12) is designed into a part of circular ring shape and a part of round table, the proportion of the round table part is 0-100%, the smaller bottom surface of the round table faces to the right side, and the included angle between a round table bus and the horizontal direction is 0-90 degrees; the rotary shaft (1) is provided with a round table type shaft shoulder at a position corresponding to the round table part of the right pole shoe (12), the larger bottom surface of the round table faces to the right, and the round table part of the rotary shaft (1) is parallel to a bus of the round table part of the right pole shoe (12); the rotating shaft (1) is provided with a plurality of pole teeth at the corresponding positions of the left pole shoe (9) and the right pole shoe (12), and the number of the left pole teeth and the right pole teeth is preferably 1-20; gaps exist between the pole teeth arranged on the rotating shaft (1) and the inner circular surfaces of the left pole shoe (9) and the right pole shoe (12), magnetic liquid (10) is injected into the gaps, and the value range of the gaps is 0.1-0.2 mm, so that magnetic liquid sealing is formed;
the rotary shaft (1) is provided with a circular shaft shoulder at a position corresponding to the electromagnet assembly II, and the diameter of the outer circular surface of the circular shaft shoulder is the same as the diameter of the larger bottom surface of the circular table type shaft shoulder of the rotary shaft (1); gaps exist between the rotating shaft (1) and corresponding positions of inner circles of the electromagnet assemblies I and II, and magnetic liquid is injected into the gaps to form a magnetic liquid storage bin I (26) and a magnetic liquid storage bin II (21);
when the magnetic liquid storage bin I (26) and the magnetic liquid storage bin II (21) are in normal operation, the magnetic fields of the electromagnet assembly I and the electromagnet assembly II are strong, the magnetic liquid in the magnetic liquid storage bin I (26) and the magnetic liquid storage bin II (21) are adsorbed, when the performance of the magnetic liquid (10) at the pole teeth is damaged and lost by radiation, the magnetic fields of the electromagnet assembly I and the electromagnet assembly II are reduced, at the moment, the magnetic fields of the permanent magnets (11) are strong, and the magnetic liquid in the magnetic liquid storage bin I (26) and the magnetic liquid storage bin II (21) are adsorbed to the lower pole teeth of the left pole shoe (9) and the right pole shoe (12) to be supplemented by magnetic field gradients; the right pole shoe (12) is provided with a round table part, so that a certain height difference exists between the pole teeth and the magnetic liquid storage bin II (21), and the magnetic liquid (10) can be conveniently supplemented;
the left magnetism isolating sleeve (6) is positioned between the left bearing (4) and the electromagnet assembly I, a boss is arranged on the left side of the left magnetism isolating sleeve (6) and is used for providing axial positioning for the outer ring of the left bearing (4); the Peltier I (27) is uniformly arranged on the right side face of the left magnetism isolating sleeve (6), a plurality of cooling surfaces are used for punching gaps between the left magnetism isolating sleeve (6) and the electromagnet assembly I, and cooling surfaces are used for punching the left magnetism isolating sleeve (6), so that the temperature of the electromagnet assembly I is reduced by using the Peltier I (27), and the stable operation of the Peltier I is ensured;
the outer magnetism isolating sleeve (15) is positioned between the electromagnet assembly II and the right bearing (17), a boss is arranged on the right side of the outer magnetism isolating sleeve (15), and axial positioning is provided for the outer ring of the right bearing (17); the Peltier III (20) is uniformly arranged on the left side surface of the outer magnetism isolating sleeve (15), a plurality of cooling surfaces are used for punching gaps between the outer magnetism isolating sleeve (15) and the electromagnet assembly II, and the cooling surfaces are used for punching the outer magnetism isolating sleeve (15), so that the electromagnet assembly II is cooled by the Peltier III (20) and is guaranteed to run stably; the inner magnetism isolating sleeve (16) is of an inverted T-shaped structure and is positioned between the circular shaft shoulder of the rotating shaft (1) and the right bearing (17), the outer magnetism isolating sleeve (15) and the inner magnetism isolating sleeve (16) are mounted in a matched mode, small-section labyrinth seal is formed, and sealing effect is enhanced;
the outer circular surface of the rotating shaft (1) is provided with 3 annular grooves, a clamp spring I (3), a clamp spring II (5) and a clamp spring III (19) are respectively placed in the annular grooves, the clamp spring I (3) and the clamp spring II (5) provide axial positioning for the inner ring of the left bearing (4), and the inner magnetism isolating sleeve (16) and the clamp spring III (19) provide axial positioning for the inner ring of the right bearing (17);
the rotating shaft (1), the left pole shoe (9) and the right pole shoe (12) are made of magnetic conductive materials with good radiation resistance, such as cobalt steel and the like;
the shell (2) is made of non-magnetic radiation-resistant materials such as lead, steel and the like;
the magnetic liquid (10) is radiation-resistant magnetic liquid.
Claims (7)
1. The utility model provides a radiation resistant magnetic liquid sealing device with magnetic liquid stores, supplementary function which characterized in that, this device includes: the magnetic liquid anti-radiation device comprises a rotating shaft (1), a shell (2), a clamp spring I (3), a left bearing (4), a clamp spring II (5), a left magnetism isolating sleeve (6), a stator core I (7), a winding coil I (8), a left pole shoe (9), magnetic liquid (10), a permanent magnet (11), a right pole shoe (12), a stator core II (13), a winding coil II (14), an outer magnetism isolating sleeve (15), an inner magnetism isolating sleeve (16), a right bearing (17), an end cover (18), a clamp spring III (19), a Peltier III (20), a magnetic liquid storage bin II (21), a right sealing ring (22), a Peltier II (23), a radiation resistant shaft sleeve (24), a left sealing ring (25), a magnetic liquid storage bin I (26) and a Peltier I (27);
the connections between the parts making up the device: the right side surface of the left magnetism isolating sleeve (6), the outer side surface of the permanent magnet (11) and the left side surface of the outer magnetism isolating sleeve (15) are correspondingly and uniformly provided with a plurality of Peltier I (27), peltier II (23) and Peltier III (20), so that the left magnetism isolating sleeve (6) with the Peltier I (27), the permanent magnet (11) with the Peltier II (23) and the outer magnetism isolating sleeve (15) with the Peltier III (20) are formed; the winding coil I (8) is wound on the stator core I (7) to form an electromagnet assembly I, and the winding coil II (14) is wound on the stator core II (13) to form an electromagnet assembly II; the outer circular surfaces of the left pole shoe (9) and the right pole shoe (12) are respectively provided with an annular groove, and the left sealing ring (25) and the right sealing ring (22) are respectively arranged in the corresponding grooves to form the left pole shoe (9) with the left sealing ring (25) and the right pole shoe (12) with the right sealing ring (22); the left magnet isolating sleeve (6) with the Peltier I (27), the electromagnet assembly I, the left pole shoe (9) with the left sealing ring (25), the permanent magnet (11) with the Peltier II (23), the anti-radiation shaft sleeve (24), the right pole shoe (12) with the right sealing ring (22), the electromagnet assembly II, the outer magnet isolating sleeve (15) with the Peltier III (20), the inner magnet isolating sleeve (16), the right bearing (17) and the clamp spring III (19) are sequentially arranged on the rotating shaft (1) from left to right and then are arranged in the shell (2); the end cover (18) is connected with the shell (2) by adopting a screw.
2. The radiation resistant magnetic liquid seal with magnetic liquid storage and replenishment as defined in claim 1 wherein:
the radiation-resistant shaft sleeve (24) is made of radiation-resistant materials, the width of the radiation-resistant shaft sleeve is the same as that of the permanent magnet (11), and the radiation-resistant shaft sleeve (24) is positioned between the left pole shoe (9) and the right pole shoe (12) and provides radiation protection for the permanent magnet (11).
3. The radiation resistant magnetic liquid seal with magnetic liquid storage and replenishment as defined in claim 1 wherein:
limiting bosses are arranged on the right side of the left pole shoe (9) and the left side of the right pole shoe (12), and the permanent magnet (11) is positioned between the left pole shoe (9) and the right pole shoe (12); the permanent magnet (11) is made of a material with good radiation resistance and high temperature resistance; the permanent magnet (11) is an axial magnetizing permanent magnet, the cross section of the permanent magnet is polygonal with a round hole in the center, the length of the longest diagonal of the cross section of the permanent magnet (11) is smaller than the diameter of the inner circular surface of the anti-radiation shaft sleeve (24), and the diameter of a central through hole of the permanent magnet (11) is the same as the diameter of the outer circular surface of the limiting boss on the right side of the left pole shoe (9) and the left side of the right pole shoe (12); the Peltier II (23) is uniformly arranged on the outer side face of the permanent magnet (11), a plurality of cooling surface flushing permanent magnets (11) are arranged, the cooling surface flushing permanent magnets (11) and the gaps of the anti-radiation shaft sleeve (24), and when the magnetic liquid sealing device causes local temperature rise due to radiation, the Peltier II (23) is used for cooling the permanent magnets (11) so as to ensure the magnetization performance of the permanent magnets.
4. The radiation resistant magnetic liquid seal with magnetic liquid storage and replenishment as defined in claim 1 wherein:
the left pole shoe (9) is in a circular ring shape, the right pole shoe (12) is designed into a part of circular ring shape and a part of round table, the proportion of the round table part is 0-100%, the smaller bottom surface of the round table faces to the right side, and the included angle between a round table bus and the horizontal direction is 0-90 degrees; the rotary shaft (1) is provided with a round table type shaft shoulder at a position corresponding to the round table part of the right pole shoe (12), the larger bottom surface of the round table faces to the right, and the round table part of the rotary shaft (1) is parallel to a bus of the round table part of the right pole shoe (12); the rotating shaft (1) is provided with a plurality of pole teeth at the corresponding positions of the left pole shoe (9) and the right pole shoe (12); gaps exist between the pole teeth arranged on the rotating shaft (1) and the inner circular surfaces of the left pole shoe (9) and the right pole shoe (12), and magnetic liquid (10) is injected into the gaps to form magnetic liquid sealing.
5. The radiation resistant magnetic liquid seal with magnetic liquid storage and replenishment as set forth in claims 1 and 4 wherein:
the rotary shaft (1) is provided with a circular shaft shoulder at a position corresponding to the electromagnet assembly II, and the diameter of the outer circular surface of the circular shaft shoulder is the same as the diameter of the larger bottom surface of the circular table type shaft shoulder of the rotary shaft (1); gaps exist between the rotating shaft (1) and corresponding positions of inner circles of the electromagnet assemblies I and II, and magnetic liquid is injected into the gaps to form a magnetic liquid storage bin I (26) and a magnetic liquid storage bin II (21);
when the magnetic liquid storage bin I (26) and the magnetic liquid storage bin II (21) are in normal operation, the magnetic fields of the electromagnet assembly I and the electromagnet assembly II are strong, the magnetic liquid in the magnetic liquid storage bin I (26) and the magnetic liquid storage bin II (21) are adsorbed, when the performance of the magnetic liquid (10) at the pole teeth is damaged and lost by radiation, the magnetic fields of the electromagnet assembly I and the electromagnet assembly II are reduced, at the moment, the magnetic fields of the permanent magnets (11) are strong, and the magnetic liquid in the magnetic liquid storage bin I (26) and the magnetic liquid storage bin II (21) are adsorbed to the lower pole teeth of the left pole shoe (9) and the right pole shoe (12) to be supplemented by magnetic field gradients; the right pole shoe (12) is provided with a round table part, so that a certain height difference exists between the pole teeth and the magnetic liquid storage bin II (21), and the magnetic liquid (10) can be conveniently supplemented.
6. The radiation resistant magnetic liquid seal with magnetic liquid storage and replenishment as defined in claim 1 wherein:
the left magnetism isolating sleeve (6) is positioned between the left bearing (4) and the electromagnet assembly I; the Peltier I (27) is uniformly arranged on the right side face of the left magnetism isolating sleeve (6), a plurality of cooling surfaces are used for punching gaps between the left magnetism isolating sleeve (6) and the electromagnet assembly I, and cooling surfaces are used for punching the left magnetism isolating sleeve (6), so that the temperature of the electromagnet assembly I is reduced by using the Peltier I (27), and the stable operation of the Peltier I is ensured;
the outer magnetism isolating sleeve (15) is positioned between the electromagnet assembly II and the right bearing (17); the Peltier III (20) is uniformly arranged on the left side surface of the outer magnetism isolating sleeve (15), a plurality of cooling surfaces are used for punching gaps between the outer magnetism isolating sleeve (15) and the electromagnet assembly II, and the cooling surfaces are used for punching the outer magnetism isolating sleeve (15), so that the electromagnet assembly II is cooled by the Peltier III (20) and is guaranteed to run stably; the inner magnetism isolating sleeve (16) is of an inverted T-shaped structure and is positioned between the circular shaft shoulder of the rotating shaft (1) and the right bearing (17), and the outer magnetism isolating sleeve (15) and the inner magnetism isolating sleeve (16) are mounted in a matched mode to form a small-section labyrinth seal.
7. The radiation resistant magnetic liquid seal device with magnetic liquid storage and replenishment function according to claims 1, 4, 5, wherein:
the rotating shaft (1), the left pole shoe (9) and the right pole shoe (12) are made of magnetic conductive materials with good radiation resistance;
the shell (2) is made of a non-magnetic radiation-resistant material;
the magnetic liquid (10) is radiation-resistant magnetic liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311257692.3A CN117212463A (en) | 2023-09-27 | 2023-09-27 | Anti-radiation magnetic liquid sealing device with magnetic liquid storage and supplementing functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311257692.3A CN117212463A (en) | 2023-09-27 | 2023-09-27 | Anti-radiation magnetic liquid sealing device with magnetic liquid storage and supplementing functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117212463A true CN117212463A (en) | 2023-12-12 |
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ID=89049265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311257692.3A Pending CN117212463A (en) | 2023-09-27 | 2023-09-27 | Anti-radiation magnetic liquid sealing device with magnetic liquid storage and supplementing functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117212463A (en) |
-
2023
- 2023-09-27 CN CN202311257692.3A patent/CN117212463A/en active Pending
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