CN111835129B - 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
- CN111835129B CN111835129B CN202010578230.1A CN202010578230A CN111835129B CN 111835129 B CN111835129 B CN 111835129B CN 202010578230 A CN202010578230 A CN 202010578230A CN 111835129 B CN111835129 B CN 111835129B
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- support
- sealing ring
- box body
- lead plate
- outlet 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
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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
- H02K5/10—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
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 upper cover and the box body; the box body 5 is arranged on the shell 13, and a second sealing ring 4 is arranged between the box body and the shell; the side face of the box body 5 is welded with a wire inlet flange 18, an inner hole of the wire inlet flange 18 is assembled with a cable sealing piece 17, and the lower part of a support 10 of the terminal structure is arranged on the 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 pressure-resistant outlet box for a nuclear power shielding motor.
Background
Due to the full-sealing characteristic advantage of the shielding motor, the shielding motor is widely applied to pump valve machines in nuclear power plants at present, and has wide market prospect. In order to prevent harmful gas from entering the outlet box and the winding cavity of the motor and causing the insulation motor of the motor to be lowered, the motor cannot safely run, the outlet wire of the motor winding on the shell and the outlet box of the motor must be well sealed, so that the harmful gas is isolated outside the motor.
The traditional shielded motor outlet box generally adopts a welding method of the outlet box and the shell to achieve a sealing effect, the wiring terminal of the motor is not sealed with the inner cavity of the motor, and the motor is easy to fail due to the fact that the outlet box is only sealed with the primary welding of the machine base; in order to increase sealing reliability, the inner end structure of a part of motor outlet box is solidified by injection molding, the connecting part is completely fixed or is welded with the machine base, but the space required by welding is larger, the volume and the weight of the box body are increased, and once winding leads or terminals are damaged, the motor is difficult to repair, the production progress is influenced, and the cost of a customer is increased.
The small-sized shielding motor has compact installation space, the shell of the small-sized shielding motor is used as a pressure boundary, and needs to bear larger pressure in a system fault state, so that the defects of cracks, incomplete welding, 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 fatigue strength of the pressure boundary are reduced, and even cracks and weldments are caused to break, so that serious safety accidents are caused. In addition, the outer diameter of the motor is small, and the volume of the outlet box is strictly limited, so that the outlet box with the structure can be used in a small-sized shielding motor under the working condition.
Disclosure of Invention
The invention aims to provide a small pressure-resistant outlet box for a nuclear power shielding motor, which effectively prevents external moisture and harmful gas from invading a motor winding cavity; the cable connection is reliable, and the cable cannot be loosened during operation. The technical scheme 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 3 of the outlet 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 shell 13, and a second sealing ring 4 is arranged between the box body and the shell; the side face of the box body 5 is welded with a wire inlet flange 18, an inner hole of the wire inlet flange 18 is assembled with a cable sealing piece 17, the lower part of a support 10 of a terminal structure is arranged on a shell 13, and a first O-shaped sealing ring 9 is arranged between the support 10 and the shell 13; the upper part of the support 10 is provided with a lead plate 8, and a second O-shaped sealing ring 2 is arranged between the support 10 and the lead plate 8; the terminal post 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 post and the motor inner lead 32.
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 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 a through hole 26 is formed in the end surface for use; the third cylindrical surface 27 is assembled with the support 10, and the second sealing ring 15 is arranged on the boss surface of the lead plate 8 and the wiring terminal 16.
The center of the support 10 is provided with a wire outlet hole 30, the inner diameter of the wire outlet hole 30 is positioned with the base 13, the upper part of the support 10 is provided with a spigot 31, the spigot 31 on the upper part of the support 10 is assembled with the wiring board 8, the lower end surface of the spigot is provided with a sealing groove 24, and an O-shaped sealing ring 9 is arranged; the support 10 is provided with through holes 25 which have the same pitch circle, number and position as the through holes 14 of the lead plate 8.
The boss 23 on the terminal post 16 is placed in the groove 19 of the lead plate 8, and the second seal ring 15 is mounted between the boss face of the terminal post 16 and the lead plate 8.
The working process of the invention comprises the following steps:
the small pressure-resistant outlet box for the nuclear power shielding motor comprises an outlet box and a terminal structure, wherein the upper cover of the outlet box is arranged on the box body, and a first sealing ring is arranged between the outlet box and the terminal structure; the box body is arranged on the shell, and a second sealing ring is arranged between the box body and the shell; the side face of the box body is welded with a wire inlet flange, an inner hole of the wire inlet flange is assembled with the cable sealing piece, the lower part of a support of the terminal structure is arranged on the shell, and a first O-shaped sealing ring is arranged between the support and the shell; the upper part of the support is provided with a lead plate, and a second O-shaped sealing ring is arranged between the support and the lead plate; the binding post passes 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 binding post 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 of the second cylindrical surface is provided with an annular groove, an O-shaped sealing ring is arranged in the annular groove, and a through hole is formed in the end surface for handling and use; the third cylindrical surface is assembled with the support, and the lead plate and the convex table 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 machine seat, the upper part of the support is provided with a spigot, the spigot on the upper part of the support is assembled with the wiring board, the lower end 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, number and position size as the through holes of the lead plate.
The boss on the terminal is placed in the recess of lead plate, and the second sealing washer is installed between terminal boss face and 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 upper cover; 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; and the side surface of the box body is welded with an incoming line flange, and an inner hole of the incoming line flange is assembled with the cable sealing element. The lower part of the support is arranged on the shell, and an O-shaped sealing ring is arranged between the lower part of the support and the 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 lead plate; the first-stage sealing of the motor leads is realized together, and moisture and harmful gas outside the box are effectively prevented from entering the inner cavity of the outlet box.
3, after the binding post, the lead plate, the support and the O-shaped sealing ring are combined and sealed with the shell, gas in the outgoing line box is effectively prevented from entering the 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 cylindrical surface is circumferentially provided with an annular groove, so that the electric distance is increased, and the structure improves the electric 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 principal sketch of a post structure
FIG. 5 is a side view of the post structure
FIG. 6 support block diagram
Figure 7 box structure diagram
The specific embodiment is as follows:
as shown in fig. 1, a small 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 upper cover and the box body; the box body 5 is arranged on the shell 13, and a second sealing ring 4 is arranged between the box body and the shell; the side face of the box body 5 is welded with a wire inlet flange 18, an inner hole of the wire inlet flange 18 is assembled with a cable sealing piece 17, the lower part of a support 10 of a terminal structure is arranged on a shell 13, and a first O-shaped sealing ring 9 is arranged between the support 10 and the shell 13; the upper part of the support 10 is provided with a lead plate 8, and a second O-shaped sealing ring 2 is arranged between the support 10 and the lead plate 8; the terminal post 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 post and the motor inner lead 32.
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-shaped sealing ring 9 is arranged in the annular groove 20, and a through hole 26 is formed in the end surface for use; the third cylindrical surface 27 is assembled with the support 10, and as shown in fig. 4 and 5, the lead plate 8 and the boss surface of the terminal post 16 are provided with a second sealing ring 15.
As shown in fig. 6, the center of the support 10 is provided with a wire outlet hole 30, the inner diameter of the wire outlet hole 30 is positioned with the base 13, the end of the wire outlet hole is provided with a spigot 31 which is assembled with the wiring board 8, the lower end surface of the wire outlet hole is provided with a sealing groove 24, and an O-shaped sealing ring 9 is arranged; as shown in fig. 7, the support 10 is provided with through holes 25 having the same pitch circle, number and position as those of the through holes 26 of the lead plate 8.
As shown in fig. 2, the boss 23 on the terminal post 16 is placed in the groove 19 of the lead plate 8, and the second seal ring 15 is mounted between the boss surface of the terminal post 16 and the lead plate 8.
The wire outlet box body is welded with a wire inlet flange, a cable sealing piece is arranged on the wire inlet flange, an external cable penetrates through the wire inlet 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 with proper materials and specifications are placed in the grooves, the sealing grooves are arranged between the upper cover and the box body and between the box body and the shell, and the sealing grooves and the cable sealing pieces jointly realize primary sealing on the motor lead, so that moisture and harmful gas outside the box are effectively prevented from entering the inner cavity of the outlet box. The lead plate is made of a material 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 voltage of the corresponding grade by the sum of the diameter difference and the height difference, and the circumferential direction of the first cylindrical surface is provided with an annular groove, so that the creepage distance is increased, and the electrical safety is improved; the second cylindrical surface is provided with a through hole for fixing. The lower end surface 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 and is installed and positioned with the support. The wiring terminal is made of copper materials with high mechanical property and good conductivity, the upper end of the wiring terminal is in a threaded structure, the lower end of the wiring terminal is in a stepped round structure, the upper end of the wiring terminal is in a fixed and wiring structure, and the lower end of the wiring terminal is in a sealing and connecting structure and is used for connecting an internal lead of the motor; the lead plate center symmetry is opened there are three shoulder holes, places O shape sealing washer in the macropore, and the inner ring face has the recess for chucking terminal boss part prevents to rotate simultaneously with the terminal during fastening. And a sealing ring is additionally arranged between the lead plate and the binding post for locking, so that the tightness between the lead plate and the binding post is ensured. The support is made of high-strength stainless steel, the center of the support is provided with a wire outlet hole, the inner diameter of the hole is provided with a spigot function, and the support is arranged on the shell. The upper end of the support is provided with a sealing groove, and the lower end of the support is provided with a proper O-shaped sealing ring for sealing; the support is provided with through holes with the same pitch circle, number and position size as the through holes of the lead plate for fixing.
Claims (4)
1. A small-size pressure-resistant outlet box for nuclear power shielding motor, characterized by: the wire outlet box comprises two parts, namely a wire outlet box body and a terminal structure, wherein an upper cover (3) of the wire outlet 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; a wire inlet flange (18) is welded on the side surface of the box body (5), an inner hole of the wire inlet flange (18) is assembled with a cable sealing piece (17), the lower part of a support (10) of the terminal structure is arranged on the shell (13), and a first O-shaped sealing ring (9) is arranged between the support (10) and the shell (13); the upper part of the support (10) is provided with a lead plate (8), 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 inner lead (32) of the motor, and a third sealing ring (15) is arranged between the binding post and the inner lead.
2. The compact pressure-resistant outlet box for a nuclear power shielding motor of claim 1, wherein: 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 2-5 mm 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); the lower end surface of the second cylindrical surface (33) is provided with an annular groove (20), an O-shaped sealing ring is arranged in the annular groove (20), and a through hole (26) is formed in the end surface; 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 third sealing ring (15).
3. The compact pressure-resistant outlet box for a nuclear power shielding motor of claim 1, wherein: the center of the support (10) is provided with a wire outlet hole (30), the inner diameter of the wire outlet hole (30) is positioned with the base (13), the upper part of the support (10) is provided with a spigot (31), the spigot (31) at the upper part of the support (10) is assembled with the wiring board (8), the lower end of the support is provided with a sealing groove (24), and an O-shaped sealing ring is arranged; the support (10) is provided with through holes (25) which are the same as the pitch circles, the number and the positions of the through holes (26) of the lead plate (8).
4. The compact pressure-resistant outlet box for a nuclear power shielding motor of claim 1, wherein: a boss (23) on the binding post (16) is placed in a groove (19) of the lead plate (8), and a third sealing ring (15) is installed 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 CN111835129A (en) | 2020-10-27 |
| CN111835129B true CN111835129B (en) | 2023-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| 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)
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| CN (1) | CN111835129B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| 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 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104348292B (en) * | 2013-07-31 | 2017-04-12 | 珠海格力电器股份有限公司 | Wiring mechanism, permanent-magnetic adjustable-speed 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 |
| 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 |
| 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 |
-
2020
- 2020-06-23 CN CN202010578230.1A patent/CN111835129B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| 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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|---|---|
| CN111835129A (en) | 2020-10-27 |
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