CN111835129A - Small-sized pressure-resistant outlet box for nuclear power shielding motor - Google Patents
Small-sized pressure-resistant outlet box for nuclear power shielding motor Download PDFInfo
- Publication number
- CN111835129A CN111835129A CN202010578230.1A CN202010578230A CN111835129A CN 111835129 A CN111835129 A CN 111835129A CN 202010578230 A CN202010578230 A CN 202010578230A CN 111835129 A CN111835129 A CN 111835129A
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- support
- sealing ring
- box body
- lead plate
- box
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/013—Sealing means for cable inlets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
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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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention relates to a small-sized pressure-resistant outlet box for a nuclear power shielding motor, which comprises an outlet box and a terminal structure, wherein an upper cover 3 of the outlet box is arranged on a box body 5, and a first sealing ring 1 is arranged between the outlet box and the box body; the box body 5 is arranged on the machine shell 13, and a second sealing ring 4 is arranged between the box body and the machine shell; the side of the box body 5 is welded with an inlet flange 18, an inner hole of the inlet flange 18 is assembled with a cable sealing element 17, and the lower part of a support 10 of the terminal structure is arranged on the machine shell 13. The invention has compact structure and small space; the living body is connected, the disassembly and the assembly are convenient, and the maintenance is easy; the outlet box and the shell adopt a sealing ring structure, so that the influence of welding deformation and defects on the strength of the shell is reduced, and the structural safety is improved.
Description
Technical Field
The invention relates to a small-sized pressure-resistant outlet box for a nuclear power shielding motor.
Background
Due to the advantage of the full-sealing characteristic of the shielding motor, the shielding motor is widely applied to pump and valve machinery in a nuclear power plant at present, and has wide market prospect. There is certain damp and hot environment in nuclear power plant, in order to prevent that harmful gas from getting into motor outlet box and winding inner chamber, leads to the insulating motor of motor to reduce, makes the motor can not the safe operation, must carry out good sealed to motor winding outlet wire and motor outlet box on the casing, makes harmful gas isolated outside the motor.
The traditional shielding motor wire outlet box generally adopts a method of welding the wire outlet box and a shell to achieve a sealing effect, a wiring terminal of a motor is not sealed with an inner cavity of the motor, and the wire outlet box is only welded and sealed with a first stage of a base, so that the wire outlet box is easy to lose efficacy; in order to improve the sealing reliability, the inner terminal structure of part of the motor outlet box is solidified by injection molding, the connecting part is completely fixed, or the connecting part is welded with the base, but the required space is larger during welding, the volume and the weight of the box body are increased, and meanwhile, once a winding lead or a terminal is damaged, the motor is difficult to repair, the production progress is influenced, and the cost of customers is increased.
The small-sized shielding motor has compact installation space, the machine shell of the small-sized shielding motor is used as a pressure boundary, the small-sized shielding motor needs to bear larger pressure in a system fault state, the defects of cracks, incomplete penetration, slag inclusion, air holes and the like are easily generated when the small-sized shielding motor is welded with a machine base, stress concentration is generated, the bearing capacity and the fatigue strength of the pressure boundary are reduced, and even cracks and welded parts are broken to cause serious safety accidents. In addition, the motor has small outer diameter and the volume of the outlet box is strictly limited, so the outlet box with the structure can be used in the small-sized shielding motor under the working condition.
Disclosure of Invention
The invention aims to provide a small-sized pressure-resistant outlet box for a nuclear power shielding motor, which effectively prevents external moisture and harmful gas from invading a winding cavity of the motor; the cable connection is reliable, and the cable cannot be loosened during operation. The technical scheme of the invention is as follows: a small-sized pressure-resistant outlet box for a nuclear power shielding motor comprises an outlet box and a terminal structure, wherein an upper cover 3 of the outlet box is arranged on a box body 5, and a first sealing ring 1 is arranged between the outlet box and the box body; the box body 5 is arranged on the machine shell 13, and a second sealing ring 4 is arranged between the box body and the machine shell; an inlet wire flange 18 is welded on the side face of the box body 5, an inner hole of the inlet wire flange 18 is matched with a cable sealing element 17, the lower part of a support 10 of the terminal structure is arranged on a machine shell 13, and a first O-shaped sealing ring 9 is arranged between the support 10 and the machine shell 13; a lead plate 8 is arranged at the upper part of the support 10, and a second O-shaped sealing ring 2 is arranged between the support 10 and the lead plate 8; the terminal 16 passes through the stepped hole 22 of the lead plate 8 and is connected with the motor inner lead 32, and the second sealing ring 15 is placed between the terminal and the motor inner lead.
The lead plate 8 is divided into an upper part, a middle part and a lower part, and the outer diameter of the second cylindrical surface 33 is 2 to 5mm smaller than the inner diameter of the box body 5; the diameter of the first cylindrical surface 34 is smaller than that of the second cylindrical surface 33, and the first cylindrical surface 34 is circumferentially provided with an annular groove 21; the lower end surface of the second cylindrical surface 33 is provided with an annular groove 20, an O-shaped sealing ring 9 is arranged in the annular groove 20, and the end surface is provided with a through hole 26 for holding and using; the third cylindrical surface 27 is assembled with the support 10, and the lead plate 8 and the lug boss surface of the terminal 16 are provided with the second sealing ring 15.
A wire outlet hole 30 is formed in the center of the support 10, the inner diameter of the wire outlet hole 30 is positioned with the base 13, a spigot 31 is formed in the upper portion of the support 10, the spigot 31 in the upper portion of the support 10 is assembled with the wiring board 8, a sealing groove 24 is formed in the lower end face of the support 10, and an O-shaped sealing ring 9 is installed; the support 10 is provided with through holes 25 having the same pitch circle, number and position size as those of the through holes 14 of the lead plate 8.
The boss 23 on the terminal 16 is placed in the groove 19 of the lead plate 8, and the second seal ring 15 is installed between the boss face of the terminal 16 and the lead plate 8.
The working process of the invention is as follows:
the small pressure-resistant outlet box for the nuclear power shielding motor comprises an outlet box and a terminal structure, wherein an upper cover of the outlet box is arranged on a box body, and a first sealing ring is arranged between the outlet box and the box body; the box body is arranged on the machine shell, and a second sealing ring is arranged between the box body and the machine shell; the side surface of the box body is welded with an inlet wire flange, an inner hole of the inlet wire flange is assembled with a cable sealing element, the lower part of a support of the terminal structure is arranged on the machine shell, and a first O-shaped sealing ring is arranged between the support and the machine shell; a lead plate is arranged at the upper part of the support, and a second O-shaped sealing ring is arranged between the support and the lead plate; the wiring terminal penetrates through the ladder hole of the lead plate and is connected with the inner lead of the motor, and a second sealing ring is arranged between the wiring terminal and the inner lead of the motor.
The lead plate is divided into an upper part, a middle part and a lower part, and the outer diameter of the second cylindrical surface is 2 to 5mm smaller than the inner diameter of the box body; the diameter of the first cylindrical surface is smaller than that of the second cylindrical surface, and an annular groove is formed in the circumferential direction of the first cylindrical surface; the lower end face of the second cylindrical surface is provided with an annular groove, an O-shaped sealing ring is arranged in the annular groove, and the end face is provided with a through hole for handling and using; the third cylindrical surface is assembled with the support, and the lead plate and the lug boss surface of the binding post are provided with a second sealing ring.
The center of the support is provided with a wire outlet hole, the inner diameter of the wire outlet hole is positioned with the base, the upper part of the support is provided with a spigot, the spigot at the upper part of the support is assembled with a wiring board, the lower end surface of the support is provided with a sealing groove, and an O-shaped sealing ring is arranged; the support is provided with through holes with the same pitch circle, quantity and position size as the through holes of the lead plate.
The boss on the binding post is placed in the groove of the lead plate, and the second sealing ring is installed between the boss surface of the binding post and the lead plate.
The invention has the beneficial effects that:
1, the invention has compact structure and small space; the living body is connected, the disassembly and the assembly are convenient, and the maintenance is easy; the outlet box and the shell adopt a sealing ring structure, so that the influence of welding deformation and defects on the strength of the shell is reduced, and the structural safety is improved.
2, an upper cover is arranged at the upper end of the box body, and a sealing ring is arranged between the upper cover and the box body; the lower end of the box body is arranged on the shell, and a sealing ring is arranged between the box body and the shell for sealing; the side of box body welds the inlet wire flange, and the inlet wire flange hole is joined in marriage with the cable seal and is joined in marriage dress. The lower part of the support is arranged on the machine shell, and an O-shaped sealing ring is arranged between the support and the machine shell for sealing; the upper part of the support is provided with a lead plate, and an O-shaped sealing ring is arranged between the lead plate and the support; the one-level sealing of the motor lead is realized jointly, and the moisture and the harmful gas outside the box are effectively prevented from entering the inner cavity of the outlet box.
After the wiring terminal, the lead plate, the support and the O-shaped sealing ring are combined and sealed with the shell, gas in the outlet box is effectively prevented from entering a winding cavity, and secondary sealing of the motor is realized;
4 the sum of the diameter difference and the height difference of the first cylindrical surface and the second cylindrical surface of the lead plate is larger than the required creepage distance; the first face of cylinder circumference is opened there is the ring channel, has increaseed and has climbed the electric distance, and this structure has improved electrical safety.
Description of the drawings:
fig. 1 is a general structure diagram of an outlet box:
FIG. 2 is a front view of a lead plate structure
FIG. 3 is a side view of a lead plate structure
FIG. 4 is a schematic view of a wiring terminal structure
FIG. 5 is a side view of a terminal structure
FIG. 6 is a view showing a structure of a holder
FIG. 7 is a block diagram of the case
The specific implementation mode is as follows:
as shown in fig. 1, the small-sized pressure-resistant outlet box for the nuclear power shielding motor comprises an outlet box and a terminal structure, wherein an upper cover 3 of the outlet box is installed on a box body 5, and a first sealing ring 1 is installed between the outlet box and the box body; the box body 5 is arranged on the machine shell 13, and a second sealing ring 4 is arranged between the box body and the machine shell; an inlet wire flange 18 is welded on the side face of the box body 5, an inner hole of the inlet wire flange 18 is matched with a cable sealing element 17, the lower part of a support 10 of the terminal structure is arranged on a machine shell 13, and a first O-shaped sealing ring 9 is arranged between the support 10 and the machine shell 13; a lead plate 8 is arranged at the upper part of the support 10, and a second O-shaped sealing ring 2 is arranged between the support 10 and the lead plate 8; the terminal 16 passes through the stepped hole 22 of the lead plate 8 and is connected with the motor inner lead 32, and the second sealing ring 15 is placed between the terminal and the motor inner lead.
The lead plate 8 is divided into an upper part, a middle part and a lower part, and the outer diameter of the second cylindrical surface 33 is 2 to 5mm smaller than the inner diameter of the box body 5; the diameter of the first cylindrical surface 34 is smaller than that of the second cylindrical surface 33, and the first cylindrical surface 34 is circumferentially provided with an annular groove 21; as shown in fig. 3, the lower end surface of the second cylindrical surface 33 is provided with an annular groove 20, an O-ring 9 is arranged in the annular groove 20, and the end surface is provided with a through hole 26 for handling and use; the third cylindrical surface 27 is fitted to the support 10, and as shown in fig. 4 and 5, the lead plate 8 and the boss surface of the post 16 are fitted with the second gasket 15.
As shown in fig. 6, the support 10 has a wire outlet hole 30 in the center, the inner diameter of the wire outlet hole 30 is positioned with the base 13, the end thereof has a spigot 31 to be assembled with the terminal block 8, the lower end surface thereof has a sealing groove 24 to mount an O-ring 9; as shown in fig. 7, the through holes 25 having the same pitch circle, number and position size as those of the through holes 26 of the lead plate 8 are formed in the holder 10.
As shown in fig. 2, the boss 23 of the terminal 16 is placed in the groove 19 of the lead plate 8, and the second seal ring 15 is installed between the boss of the terminal 16 and the lead plate 8.
The box body of the outlet box is welded with an inlet wire flange, a cable sealing element is arranged on the inlet wire flange, an external cable penetrates through the inlet wire flange, one end of the external cable is locked and sealed, and the other end of the external cable is connected with a binding post. The upper end face and the lower end face of the box body are respectively provided with a sealing groove, 2O-shaped sealing rings made of proper materials and specifications are placed in the grooves and are installed between the upper cover and the box body, between the box body and the machine shell, and the sealing grooves and the cable sealing parts jointly realize primary sealing on a motor lead, so that moisture and harmful gas outside the box are effectively prevented from entering an inner cavity of the outlet box. The lead plate is made of materials with high temperature resistance, irradiation resistance, corrosion resistance, good insulating property and high mechanical property, the shape of the lead plate corresponds to that of the junction box, the lead plate is circular and is divided into an upper part, a middle part and a lower part, and the outer diameter of the second cylindrical surface is 2-5 mm smaller than the inner diameter of the box body; the diameter of the first cylindrical surface is smaller than that of the second cylindrical surface, the creepage distance is selected according to the sum of the diameter difference and the height difference and the corresponding grade voltage, an annular groove is formed in the circumferential direction of the first cylindrical surface, the creepage distance is increased, and the electrical safety is improved; the end surface of the second cylindrical surface is provided with a through hole for fixing use. The lower end face of the second cylindrical surface is provided with an annular groove, and a proper O-shaped sealing ring is installed; the third cylindrical surface part is a spigot which is arranged and positioned with the support. The binding post is made of a copper material with high mechanical property and good conductivity, the upper end of the binding post adopts threads, the lower end of the binding post adopts a stepped circular structure, the threads at the upper end are used for fixing and wiring, and the lower end of the binding post is used for sealing and connecting a lead in the motor; the center of the lead plate is symmetrically provided with three stepped holes, an O-shaped sealing ring is arranged in each large hole, and the inner ring surface is provided with a groove for clamping the lug boss part of the wiring terminal and preventing the lug boss part and the wiring terminal from rotating simultaneously during fastening. And a seal ring lock is arranged between the lead plate and the wiring terminal to ensure the sealing property between the lead plate and the wiring terminal. The support is made of high-strength stainless steel material, the center of the support is provided with a wire outlet hole, and the inner diameter of the hole has a spigot function and is arranged on the shell. The upper end of the support is arranged with the wiring board, the lower end surface is provided with a sealing groove, and a proper O-shaped sealing ring is arranged for sealing; the support is provided with through holes with the same pitch circle, quantity and position size as the through holes of the lead plate for fixing.
Claims (4)
1. The utility model provides a nuclear power shielding motor is with small-size resistance outlet box, characterized by: the cable outgoing box comprises two parts, namely a cable outgoing box and a terminal structure, wherein an upper cover (3) of the cable outgoing box is arranged on a box body (5), and a first sealing ring (1) is arranged between the upper cover and the box body; the box body (5) is arranged on the machine shell (13), and a second sealing ring (4) is arranged between the box body and the machine shell; an inlet wire flange (18) is welded on the side face of the box body (5), an inner hole of the inlet wire flange (18) is matched with a cable sealing element (17), the lower part of a support (10) of the terminal structure is arranged on a machine shell (13), and a first O-shaped sealing ring (9) is arranged between the support (10) and the machine shell (13); a lead plate (8) is arranged at the upper part of the support (10), and a second O-shaped sealing ring (2) is arranged between the support (10) and the lead plate (8); the binding post (16) passes through the ladder hole (22) of the lead plate (8) and is connected with the motor inner lead (32), and a second sealing ring (15) is arranged between the binding post and the motor inner lead.
2. The small-sized pressure-resistant outlet box for the nuclear power shielding motor as claimed in claim 1, which is characterized in that: the lead plate (8) is divided into an upper part, a middle part and a lower part, and the outer diameter of the second cylindrical surface (33) is 2 to 5mm smaller than the inner diameter of the box body (5); the diameter of the first cylindrical surface (34) is smaller than that of the second cylindrical surface (33), and an annular groove (21) is formed in the circumferential direction of the first cylindrical surface (34); an annular groove (20) is formed in the lower end face of the second cylindrical surface (33), an O-shaped sealing ring (9) is installed in the annular groove (20), and a through hole (26) is formed in the end face; the third cylindrical surface (27) is assembled with the support (10), and the lead plate (8) and the lug boss surface of the binding post (16) are provided with a second sealing ring (15).
3. The small-sized pressure-resistant outlet box for the nuclear power shielding motor as claimed in claim 1, which is characterized in that: a wire outlet hole (30) is formed in the center of the support (10), the inner diameter of the wire outlet hole (30) is positioned with the base (13), a spigot (31) is formed in the upper portion of the support (10), the spigot (31) in the upper portion of the support (10) is assembled with the wiring board (8), a sealing groove (24) is formed in the lower end face of the support (10), and an O-shaped sealing ring (9) is installed; the support (10) is provided with through holes (25) with the same pitch circle, number and position size as the through holes (14) of the lead plate (8).
4. The small-sized pressure-resistant outlet box for the nuclear power shielding motor as claimed in claim 1, which is characterized in that: a boss (23) on the binding post (16) is placed in a groove (19) of the lead plate (8), and a second sealing ring (15) is arranged between the boss surface of the binding post (16) and the lead plate (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010578230.1A CN111835129B (en) | 2020-06-23 | 2020-06-23 | Small-sized pressure-resistant outlet box for nuclear power shielding motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010578230.1A CN111835129B (en) | 2020-06-23 | 2020-06-23 | Small-sized pressure-resistant outlet box for nuclear power shielding motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111835129A true CN111835129A (en) | 2020-10-27 |
| CN111835129B CN111835129B (en) | 2023-05-23 |
Family
ID=72897942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010578230.1A Active CN111835129B (en) | 2020-06-23 | 2020-06-23 | Small-sized pressure-resistant outlet box for nuclear power shielding motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111835129B (en) |
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| CN202190171U (en) * | 2011-07-30 | 2012-04-11 | 南阳防爆集团股份有限公司 | High pressure resistant, fast-connect, amphibious, explosion-proof heater junction box |
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| CN203416136U (en) * | 2013-08-15 | 2014-01-29 | 浙江凯利达防爆机电有限公司 | AC asynchronous motor |
| CN203645448U (en) * | 2013-11-29 | 2014-06-11 | 江苏大中电机股份有限公司 | High dustproof and waterproof junction box of efficient explosion-proof motor |
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| CN104348292A (en) * | 2013-07-31 | 2015-02-11 | 珠海格力电器股份有限公司 | Wiring mechanism, permanent magnet speed regulation motor and centrifugal refrigeration compressor |
| CN204164025U (en) * | 2014-09-26 | 2015-02-18 | 山东星源矿山设备集团有限公司 | A kind of submersible pump with cable sealing device |
| CN205319842U (en) * | 2015-12-09 | 2016-06-15 | 常州嘉轩数控设备有限公司 | Intelligence terminal box for industrial motor |
| CN205489934U (en) * | 2016-01-18 | 2016-08-17 | 苏州联发电机有限公司 | Multiple protection motor terminal box |
| CN106917756A (en) * | 2016-08-30 | 2017-07-04 | 合肥新沪屏蔽泵有限公司 | A kind of chemical-process high-pressure masked pump |
| CN206542278U (en) * | 2017-03-06 | 2017-10-03 | 广东合一新材料研究院有限公司 | A kind of wire inlet-outlet sealing structure of the cold wheel hub motor of liquid |
| CN207426883U (en) * | 2017-10-19 | 2018-05-29 | 浙江朝舜机电有限公司 | A kind of fire-proof motor terminal box |
| CN108683287A (en) * | 2018-08-02 | 2018-10-19 | 抚顺煤矿电机制造有限责任公司 | A kind of junction box structure of electrical machine |
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2020
- 2020-06-23 CN CN202010578230.1A patent/CN111835129B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4966559A (en) * | 1989-10-12 | 1990-10-30 | Tecumseh Products Company | Internal terminal block for compressor hermetic terminal |
| CN101714794A (en) * | 2009-08-18 | 2010-05-26 | 焦作市银星制动器有限公司 | Dual high voltage flameproof motor |
| CN201699366U (en) * | 2009-12-18 | 2011-01-05 | 大连四方电泵有限公司 | Junction box of shielding-type electric driving device |
| CN202190171U (en) * | 2011-07-30 | 2012-04-11 | 南阳防爆集团股份有限公司 | High pressure resistant, fast-connect, amphibious, explosion-proof heater junction box |
| CN102647047A (en) * | 2012-05-22 | 2012-08-22 | 哈尔滨电气动力装备有限公司 | Shielded motor for reactor coolant pump |
| CN104348292A (en) * | 2013-07-31 | 2015-02-11 | 珠海格力电器股份有限公司 | Wiring mechanism, permanent magnet speed regulation motor and centrifugal refrigeration compressor |
| CN203416136U (en) * | 2013-08-15 | 2014-01-29 | 浙江凯利达防爆机电有限公司 | AC asynchronous motor |
| CN203645448U (en) * | 2013-11-29 | 2014-06-11 | 江苏大中电机股份有限公司 | High dustproof and waterproof junction box of efficient explosion-proof motor |
| CN203896100U (en) * | 2014-06-03 | 2014-10-22 | 分宜宏大煤矿电机制造有限公司 | Novel explosion-proof junction box for motor |
| CN204068507U (en) * | 2014-09-05 | 2014-12-31 | 中州华起电机有限公司 | A kind of fire-proof motor |
| CN204164025U (en) * | 2014-09-26 | 2015-02-18 | 山东星源矿山设备集团有限公司 | A kind of submersible pump with cable sealing device |
| CN104300731A (en) * | 2014-09-28 | 2015-01-21 | 荣成市先锋电机厂 | Electromotor combined with pressure vessel |
| CN205319842U (en) * | 2015-12-09 | 2016-06-15 | 常州嘉轩数控设备有限公司 | Intelligence terminal box for industrial motor |
| CN205489934U (en) * | 2016-01-18 | 2016-08-17 | 苏州联发电机有限公司 | Multiple protection motor terminal box |
| CN106917756A (en) * | 2016-08-30 | 2017-07-04 | 合肥新沪屏蔽泵有限公司 | A kind of chemical-process high-pressure masked pump |
| CN206542278U (en) * | 2017-03-06 | 2017-10-03 | 广东合一新材料研究院有限公司 | A kind of wire inlet-outlet sealing structure of the cold wheel hub motor of liquid |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111835129B (en) | 2023-05-23 |
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