CN113746255B

CN113746255B - Sealed water-cooled motor shell, motor and motor driving device

Info

Publication number: CN113746255B
Application number: CN202111128008.2A
Authority: CN
Inventors: 吴奎奎; 傅显明
Original assignee: Zhejiang Jiafeng Power Technology Co ltd
Current assignee: Zhejiang Jiafeng Power Technology Co ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2023-04-25
Anticipated expiration: 2041-09-26
Also published as: CN113746255A

Abstract

The invention discloses a sealed water-cooled motor shell which comprises a middle shell, a front end shell and a rear end shell, wherein the middle shell, the front end shell and the rear end shell are connected through a sealing mechanism, the middle shell is coaxially sleeved on an inner core, the middle shell and the inner core are connected through four connecting pieces uniformly distributed around the inner core, and the middle shell, the inner core and the connecting pieces are integrally manufactured. The beneficial effects are that: inside cavity form that is of heat exchange tube, inside water can get into its inside water through the intake groove and can drive rotating vane on the bull stick and rotate, makes its rivers inside the heat exchange tube accelerate, and the in-process that accelerates, bumps at first hang plate and second hang plate through its inside water, and it is noted that first hang plate and second hang plate are slope design, and consequently water is more to the impact number of times on the hang plate, cooperation heat dissipation lug, further increase to water cooling efficiency.

Description

Sealed water-cooled motor shell, motor and motor driving device

Technical Field

The invention relates to the field of water-cooled motors, in particular to a sealed water-cooled motor shell, a motor and a motor driving device.

Background

Because of the development trend of market demands for energy conservation, small volume and high power in the motor industry, water-cooled motor shells have become the new demands of a plurality of emerging industries, such as the transition of the motor for new energy automobiles from air cooling to water cooling of the current days. The purpose of adopting water cooling for motor cooling is just to dispel the heat in the motor operation, ensures the high-efficient operation of motor and permanent magnet and does not demagnetize because of high temperature. In the occasion that the working fluid of the mechanical working body matched with the motor needs to be cooled, because the motor belongs to an external component, the two cooling devices are isolated from each other, in the occasion that water cooling is needed, two groups of parallel pipelines are adopted, water flows are connected in series or in parallel, and the two parallel pipelines are connected through external pipes, so that a connecting space and a maintenance space are needed to be reserved. This is not only an improvement for some industries where installation space is compact, but also the maintenance burden of the external water pipe is not negligible.

For the problems in the related art, no effective solution has been proposed at present.

Disclosure of Invention

Aiming at the problems in the related art, the invention provides a sealed water-cooled motor shell, a motor and a motor driving device, which are used for overcoming the technical problems in the prior art.

The technical scheme of the invention is realized as follows:

the utility model provides a sealed water-cooling motor shell, includes middle part casing, front end shell and rear end shell, middle part casing front end shell with connect through sealing mechanism between the rear end shell, middle part casing coaxial sleeve is on the inner core, middle part casing with link to each other through four connecting pieces that evenly surround the inner core distributes between the inner core, middle part casing inner core with the connecting piece is made as an organic whole, the connecting piece will middle part casing with the space between the inner core separates into four regions, four the region warp front end shell and rear end shell shutoff form the cooling water appearance chamber, around in the cooling water appearance intracavity a plurality of heat exchange tube evenly distributed has around the inner core, front end shell with offer on the rear end shell and supply the wearing mouth that the heat exchange tube both ends passed, the heat exchange tube is inside to be the cavity form, just heat exchange tube inner wall both sides are all fixed and are equipped with the bearing, be equipped with the bull stick between the bearing, the bull stick surface evenly installs a plurality of horizontal arrangement's rotating vane, every horizontal arrangement will the middle part casing with the space separates into four regions with the space between the inner core, four the region warp front end shell and rear end shell shutoff forms the cooling water appearance chamber, the cooling water appearance chamber is equipped with a plurality of tilt-tube, the cooling water inlet and the one end is equipped with the cooling water groove, and the one end of the cooling water groove is equipped with the cooling water groove, and the one end is equipped with the cooling water groove, and the top is equipped with the water inlet, and the tilt plate is equipped with the cooling down, and the water pump is equipped with the water inlet down, and the cooling down. The heat exchange tube comprises a middle shell, a rear end shell, a front end shell, a heat exchange tube and a heat dissipation fin, wherein the rear end shell is located on one end face of the square insert tube, a back-shaped insertion opening is formed in one end face of the square insert tube, the square insert tube is inserted into the back-shaped insertion opening, a rubber sealing gasket is adhered to the inner wall of the back-shaped insertion opening, the other end face of the middle shell is provided with a secondary back-shaped insertion opening, the inner wall of the secondary back-shaped insertion opening is provided with a secondary rubber sealing gasket, the secondary back-shaped insertion opening is formed in the other end face of the middle shell, the secondary back-end shell is fixedly provided with a secondary square insert tube on one end face of the middle shell, the secondary square insert tube is inserted into the secondary back-shaped insertion opening, the rear end shell and the front end shell are provided with a secondary sealing mechanism, the secondary sealing mechanism is arranged on the front end shell, a plurality of heat dissipation protrusions are arranged on the outer wall of the inner core, the heat exchange tube is a vertical cooling tube, the heat dissipation fin is arranged on the outer surface of the tube, an insert bar is axially arranged on the inner wall of the tube, and the heat dissipation fin is arranged between the adjacent heat dissipation fins.

Further, the packaged water-cooled motor shell is provided.

Further, the motor has the claim, and the mechanical working body matched with the motor, wherein the mechanical working body is provided with a water cooling device, a cooling water channel of the water cooling device is communicated with the cooling water containing cavity through the water diversion hole on the motor shell of the motor, and two ends of the heat exchange tube are connected with a hot working fluid communicating pipe on the mechanical working body for water cooling.

Further, the auxiliary sealing mechanism comprises a sealing cylinder fixedly sleeved on the outer surface of the rear end shell, an auxiliary sealing cylinder fixedly sleeved on the outer surface of the front end shell, and a sealing ring fixedly stuck on one end face of the sealing cylinder corresponding to the auxiliary sealing cylinder.

Further, the installation mechanism comprises a threaded opening formed in the sealing cylinder, the inner surface of the water inlet is in an internal thread shape, the threaded opening corresponds to the water inlet, a water inlet pipe is inserted into the threaded opening and the water inlet through common threads, and a filtering mechanism is arranged on the water inlet pipe.

Further, the filtering mechanism comprises a filter screen and an activated carbon filter core, the filter screen and the activated carbon filter core are jointly installed in a threaded cylinder, the diameter of the threaded cylinder is larger than that of the water inlet pipe, and the threaded cylinder is sleeved on the water inlet pipe in a threaded manner.

Further, an auxiliary threaded port is formed in the auxiliary sealing cylinder, the inner surface of the water outlet is in an internal thread shape, the auxiliary threaded port corresponds to the water outlet, a water outlet pipe is inserted into the auxiliary threaded port and the water outlet through common threads, and the top of the water outlet pipe extends out of the auxiliary threaded port.

Further, the inlet tube with the outlet pipe top lateral wall is all fixed and is equipped with strengthens the installation mechanism, strengthen the installation mechanism and be the fixed plate, the fixed plate the sealed section of thick bamboo with corresponding screw hole has all been seted up on the vice sealed section of thick bamboo, the screw hole interpolation is equipped with fixing screw, the internal thread of screw hole inside with the water inlet with the internal thread of delivery port inside sets up for opposite.

Further, corresponding mounting openings are formed in the sealing cylinder and the middle shell, the mounting openings are communicated with the inner core inner wall through cable lead channels, a thread cover is inserted into the mounting openings in a threaded mode, a penetrating opening through which a cable lead passes is formed in the top surface of the thread cover, and sealing glue is adhered to the inner wall of the penetrating opening.

The invention provides a sealed water-cooled motor shell, a motor and a motor driving device, which have the following beneficial effects:

the front end shell and the rear end shell are respectively arranged in front of and behind the middle shell, so that a cooling water containing cavity is formed in the motor shell after installation, and subsequent disassembly is also convenient, and the concrete steps of installation are that the front end shell and the rear end shell are respectively arranged in front of and behind the middle shell, the rear end shell and the middle shell are aligned, a square plug tube above the middle shell is inserted into a back-shaped socket, at the moment, a rubber sealing gasket inside the back-shaped socket can wrap the outer surface of the square plug tube, then the middle shell and the front end shell are installed, a secondary rubber sealing gasket on the front end shell can be inserted into a secondary back-shaped socket, at the moment, the outer surface of the secondary square plug tube is wrapped by the secondary rubber sealing gasket in the secondary back-shaped socket, the tightness after installation is good among the middle shell, the front end shell and the rear end shell is corresponding, a secondary sealing mechanism is arranged between the rear end shell and the front end shell, and the secondary sealing mechanism is further ensured, and finally the motor shell is installed by matching with the installation mechanism;

the cooling water containing cavity is matched with the heat exchange tube arranged in the cooling water containing cavity to form a water heat exchanger, so that the cooling water containing cavity not only meets the cooling requirement of a motor, but also can provide water cooling for a working medium, so that the function of a motor shell is expanded, the installation space and peripheral auxiliary parts are saved, the cost performance of a product is greatly improved, and the heat exchange tube is sealed by adopting a sealing material;

inside cavity form that is of heat exchange tube, inside water can get into its inside water through the intake groove and can drive rotating vane on the bull stick and rotate, makes its rivers inside the heat exchange tube accelerate, and the in-process that accelerates, bumps at first hang plate and second hang plate through its inside water, and it is noted that first hang plate and second hang plate are slope design, and consequently water is more to the impact number of times on the hang plate, cooperation heat dissipation lug, further increase to water cooling efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front view of a sealed water cooled motor housing, motor and motor drive in accordance with an embodiment of the present invention;

FIG. 2 is a schematic diagram of the installation of a sealed water-cooled motor housing, a middle housing of the motor and motor drive, a front housing and a rear housing according to an embodiment of the present invention;

FIG. 3 is a schematic view of the inside of a heat exchange tube of a sealed water-cooled motor housing, motor and motor drive according to an embodiment of the present invention;

FIG. 4 is a schematic view of the exterior of a heat exchange tube of a sealed water-cooled motor housing, motor and motor drive according to an embodiment of the present invention;

FIG. 5 is a schematic view of a screw thread cartridge for a hermetically sealed water cooled motor housing, motor and motor drive in accordance with an embodiment of the present invention;

FIG. 6 is a schematic diagram of a reinforced mounting mechanism for a sealed water-cooled motor housing, motor and motor drive in accordance with an embodiment of the present invention;

fig. 7 is a schematic view of a screw cap of a sealed water-cooled motor housing, motor and motor drive according to an embodiment of the invention.

In the figure:

1. a middle housing; 2. a front end housing; 3. a rear end shell; 4. an inner core; 5. a connecting piece; 6. a cooling water containing cavity; 7. a heat exchange tube; 8. a through hole; 9. a bearing; 10. a rotating rod; 11. rotating the blades; 12. a first inclined plate; 13. a second inclined plate; 14. a heat dissipation bump; 15. a water inlet tank; 16. a water inlet; 17. a water outlet; 18. a water diversion hole; 19. square insertion tube; 20. a Chinese character 'Hui' shaped socket; 21. a rubber gasket; 22. an auxiliary Chinese character 'Hui' shaped socket; 23. an auxiliary rubber gasket; 24. an auxiliary square insertion barrel; 25. a sealing cylinder; 26. an auxiliary sealing cylinder; 27. a seal ring; 28. a threaded port; 29. a water inlet pipe; 30. a filter screen; 31. an activated carbon filter element; 32. a thread cylinder; 33. an auxiliary threaded port; 34. a water outlet pipe; 35. a heat radiation protrusion; 36. a tube body; 37. a heat radiation fin; 38. cutting; 39. a fixing plate; 40. a threaded hole; 41. a fixed screw; 42. a mounting port; 43. a threaded cap.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the invention, fall within the scope of protection of the invention.

The invention will be further described with reference to the accompanying drawings and detailed description below:

embodiment one:

referring to fig. 1-7, a sealed water-cooled motor casing according to an embodiment of the present invention includes a middle casing 1, a front end casing 2 and a rear end casing 3, where the middle casing 1, the front end casing 2 and the rear end casing 3 are connected by a sealing mechanism, the middle casing 1 is coaxially sleeved on an inner core 4, the middle casing 1 and the inner core 4 are connected by four connectors 5 uniformly distributed around the inner core 4, the middle casing 1, the inner core 4 and the connectors 5 are integrally made, the connectors 5 divide a gap between the middle casing 1 and the inner core 4 into four areas, the four areas are plugged by the front end casing 2 and the rear end casing 3 to form a cooling water cavity 6, a plurality of heat exchange tubes 7 are uniformly distributed around the inner core 4 in the cooling water cavity 6, the front end shell 2 and the rear end shell 3 are provided with through holes 8 for the two ends of the heat exchange tube 7 to pass through, the inside of the heat exchange tube 7 is in a cavity shape, bearings 9 are fixedly arranged on the two sides of the inner wall of the heat exchange tube 7, a rotating rod 10 is arranged between the bearings, a plurality of transversely arranged rotating blades 11 are uniformly arranged on the outer surface of the rotating rod 10, the number of the rotating blades 11 arranged transversely is a plurality of each, two rotating blades 11 are designed into a group, a first inclined plate 12 and a second inclined plate 13 are fixedly arranged on each rotating blade 11 of each group, heat dissipation convex blocks 14 are uniformly distributed on the outer surfaces of the first inclined plate 12 and the second inclined plate 13, a plurality of water inlet grooves 15 are formed on the outer surface of the heat exchange tube 7, the inside of the cooling water containing cavity 6 is divided into a plurality of chambers through the connecting pieces 5, the chambers are communicated through water groove channels, the middle shell 1 is provided with a water inlet 16 and a water outlet 17, the front end shell 2 is provided with a water diversion hole 18 communicated with the cooling water containing cavity 6, the sealing mechanism comprises a square insertion barrel 19 fixed at one end of the middle shell 1, the rear end shell 3 is provided with a square insertion barrel 20 positioned on one end face of the square insertion barrel 19, the square insertion barrel 19 is inserted into the square insertion barrel 20, the inner wall of the square insertion barrel 20 is stuck with a rubber sealing pad 21, the other end face of the middle shell 1 is provided with a secondary square insertion barrel 22, the inner wall of the secondary square insertion barrel 22 is stuck with a secondary rubber sealing pad 23, the front end shell 2 is positioned on one end face of the middle shell 1 and is fixedly provided with a secondary square insertion barrel 24, the auxiliary square inserting cylinder 24 is inserted into the auxiliary square inserting opening 22, an auxiliary sealing mechanism is arranged on the rear end shell 3 and the front end shell 2, a matched mounting mechanism is arranged on the auxiliary sealing mechanism and the middle shell 1, a plurality of heat dissipation protrusions 35 are arranged on the outer wall of the inner core 4, the heat exchange tube 7 is a vertical cooling tube, the heat exchange tube is provided with a tube body 36, heat dissipation fins 37 are axially arranged on the outer surface of the tube body 36, inserting strips 38 are axially arranged on the tube body 36, inserting grooves matched with the inserting strips 38 are formed in the inner wall of the middle shell 1, and the water inlet groove 15 is formed between the adjacent heat dissipation fins 37.

Embodiment two:

as shown in fig. 1, 3 and 4, the motor and the mechanical working body matched with the motor are provided with a water cooling device, a cooling water channel of the water cooling device is communicated with the cooling water containing cavity 6 through the water diversion hole 18 on the motor shell of the motor, and two ends of the heat exchange tube 7 are connected with a hot working fluid communicating pipe on the mechanical working body for water cooling and temperature reduction.

Through the scheme of the invention, the beneficial effects are that: the working body machine is provided with a water cooling device, a cooling water channel of the water cooling device is communicated with a cooling water containing cavity in the cooling water channel through a water diversion hole on a motor shell of the motor, and two ends of a heat exchange pipe on the motor shell are connected with a hot working fluid communication pipe orifice on the mechanical working body for water cooling.

Embodiment III:

as shown in fig. 2 and 5, the auxiliary sealing mechanism comprises a sealing cylinder 25 fixedly sleeved on the outer surface of the rear end shell 3, an auxiliary sealing cylinder 26 fixedly sleeved on the outer surface of the front end shell 2, sealing rings 27 fixedly stuck on one corresponding end surfaces of the sealing cylinder 25 and the auxiliary sealing cylinder 26, the mounting mechanism comprises a threaded opening 28 formed in the sealing cylinder 25, the inner surface of the water inlet 16 is in an internal thread shape, the threaded opening 28 corresponds to the water inlet 16, a water inlet pipe 29 is inserted into the threaded opening 28 and the water inlet 16 through common threads, a filtering mechanism is arranged on the water inlet pipe 29, the filtering mechanism comprises a filter screen 30 and an activated carbon filter core 31, the filter screen 30 and the activated carbon filter core 31 are jointly mounted in a threaded cylinder 32, the diameter of the threaded cylinder 32 is larger than that of the water inlet pipe 29, the threaded cylinder 32 is sleeved on the water inlet pipe 29 through threads, an auxiliary threaded opening 33 is formed in the auxiliary sealing cylinder 26, the inner surface of the water outlet 17 is in an internal thread shape, the water outlet 33 corresponds to the auxiliary threaded opening 17 and the auxiliary threaded opening 33 extends out of the water outlet pipe 34 through the common threads 33.

Through the scheme of the invention, the beneficial effects are that: after the middle shell 1, the front end shell 2 and the rear end shell 3 are installed, the sealing cylinder 25 and the auxiliary sealing cylinder 26 are aligned, the sealing rings 27 on the two are mutually extruded, the sealing effect is further achieved, after the sealing, the subsequent fixed installation is needed, the water inlet 16 corresponds to the threaded port 28, then the water inlet pipe 29 is inserted into the water inlet 16 and the threaded port 28 in a threaded manner, so that the installation between the middle shell 1 and the rear end shell 3 is achieved, water inlet is not influenced, the installation between the middle shell 1 and the front end shell 2 is also realized, the water outlet pipe 34 is inserted into the auxiliary threaded port 33 and the water outlet 17, the filter screen 30 and the activated carbon filter core 31 can filter cooling water entering the water cavity, the water inlet or the water outlet is prevented from being blocked, the cooling water circulation is not influenced, and a good heat dissipation effect is always kept.

Embodiment four:

as shown in fig. 1 and 6, the outer side walls of the top of the water inlet pipe 29 and the water outlet pipe 34 are respectively and fixedly provided with a reinforced mounting mechanism, the reinforced mounting mechanism is a fixing plate 39, the sealing cylinder 25 and the auxiliary sealing cylinder 26 are respectively provided with a corresponding threaded hole 40, a fixing screw 41 is inserted in the threaded hole 40, internal threads inside the threaded hole 40 are oppositely arranged with those inside the water inlet 16 and the water outlet 17, the sealing cylinder 25 and the middle shell 1 are respectively provided with a corresponding mounting hole 42, the mounting holes 42 are communicated with the inner wall of the inner core 4 through a cable lead channel, a thread cover 43 is inserted in the mounting holes 42 in a threaded manner, the top surface of the thread cover 43 is provided with a penetrating hole through which a cable lead passes, and sealing glue is adhered on the inner wall of the penetrating hole.

Through the scheme of the invention, the beneficial effects are that: note that, a fixing plate 39 is fixed at the middle of the water inlet pipe 29 and the water outlet pipe 34, the fixing plates 39 on the water inlet pipe 29 and the water outlet pipe 34 are provided with threaded holes 40, the threaded holes 40 correspond to the threaded holes 40 on the sealing cylinder 25 and the auxiliary sealing cylinder 26, the fixing screws 41 are matched for insertion, the fixity between the water inlet pipe 29 and the water outlet pipe 34 and the sealing cylinder 25 and the auxiliary sealing cylinder 26 is higher, the water inlet pipe 29 is inserted into the water inlet 16 and the threaded hole 28 in a threaded manner of being left-handed, the fixing screws 41 are inserted into the threaded holes 40 in a manner of being right-handed, so that the screwing direction of the water inlet pipe 29 and the fixing screws 41 is positive or negative, and the installation stability is further improved;

note that, several sets of screw holes may be redesigned on the seal cartridge 25, the sub seal cartridge 26, and the middle housing 1, and the screw is inserted, but the screw holes on the middle housing 1 are not screw holes penetrating the middle housing 1.

In order to facilitate understanding of the above technical solutions of the present invention, the following describes in detail the working principle or operation manner of the present invention in the actual process.

In practical application, the front end shell 2 and the rear end shell 3 are respectively installed in front and back of the middle shell 1, so that a cooling water containing cavity 6 is formed in the installed motor shell, and subsequent disassembly is also convenient, the front end shell 2 and the rear end shell 3 are respectively installed in front and back of the middle shell 1, the specific installation steps are that the rear end shell 3 and the middle shell 1 are aligned, a square inserting cylinder 19 on the middle shell 1 is inserted into a back-shaped inserting opening 20, at the moment, a rubber sealing gasket 21 in the back-shaped inserting opening 20 wraps the outer surfaces of all the square inserting cylinders 19, then the middle shell 1 and the front end shell 2 are installed, an auxiliary square inserting cylinder 24 on the front end shell 2 is inserted into an auxiliary back-shaped inserting opening 22, at the moment, an auxiliary rubber sealing gasket 23 in the auxiliary back-shaped inserting opening 22 wraps the outer surfaces of all the auxiliary square inserting cylinders 24, the middle shell 1, the front end shell 2 and the rear end shell 3 are aligned, and finally, the rear end shell 3 and the front end shell 2 are provided with sealing mechanisms, and the final installation mechanism is further matched;

the cooling water containing cavity 6 is matched with the heat exchange tube 7 arranged in the cooling water containing cavity 6 to form a water heat exchanger, so that the cooling water containing cavity not only meets the cooling requirement of a motor, but also can provide water cooling for a working medium, the function of a motor shell is expanded, the installation space and peripheral auxiliary parts are saved, the cost performance of a product is greatly improved, and the heat exchange tube is sealed by adopting a sealing material between the through hole 8;

the heat exchange tube 7 is internally hollow, water in the heat exchange tube can enter the heat exchange tube through the water inlet groove 15 and can drive the rotating blades 11 on the rotating rod 10 to rotate, so that water flow of the heat exchange tube is accelerated in the heat exchange tube 7, and in the accelerated process, water in the heat exchange tube is collided with the first inclined plate 12 and the second inclined plate 13, and the first inclined plate 12 and the second inclined plate 13 are inclined, so that the impact times of the water on the inclined plates are more, the heat dissipation convex blocks 14 are matched, and the water cooling efficiency is further improved.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims

1. The utility model provides a sealed water-cooling motor shell, its characterized in that includes middle part casing (1), front end shell (2) and rear end shell (3), middle part casing (1) front end shell (2) with connect through sealing mechanism between rear end shell (3), middle part casing (1) coaxial sleeve is on inner core (4), middle part casing (1) with connect through four connecting piece (5) evenly around inner core (4) distribution between inner core (4), middle part casing (1) inner core (4) with connecting piece (5) are made as an organic whole, connecting piece (5) will middle part casing (1) with the space separates into four regions between inner core (4), four the regional warp front end shell (2) and rear end shell (3) form cooling water appearance chamber (6), it has a plurality of heat transfer tube (7) to encircle in inner core (4) evenly distributed, front end shell (2) with on inner core (3) are equipped with heat transfer tube (7) the heat transfer tube is equipped with in the bull stick (7) both sides are equipped with heat transfer tube (7) and are equipped with between the heat transfer tube (7) and are equipped with the both ends (7), the heat exchange tube comprises a rotary rod (10), a plurality of transversely arranged rotary blades (11) uniformly arranged on the outer surface of the rotary rod (10), a plurality of transversely arranged rotary blades (11) are arranged in number, two rotary blades (11) are designed into a group, a first inclined plate (12) and a second inclined plate (13) are fixedly arranged on each group of rotary blades (11), heat dissipation bumps (14) are uniformly distributed on the outer surfaces of the first inclined plate (12) and the second inclined plate (13), a plurality of water inlet grooves (15) are formed on the outer surface of the heat exchange tube (7), a plurality of chambers are formed in the cooling water accommodating cavity (6) through connecting pieces (5), the chambers are communicated through water grooves, a water inlet (16) and a water outlet (17) are formed in the middle shell (1), a water diversion hole (18) communicated with the cooling water accommodating cavity (6) is formed in the front end shell (2), the sealing mechanism comprises a square inserting cylinder (19) fixed at one end of the middle shell (1), a square inserting port (20) is formed in the inner wall (20) of the square inserting cylinder (19), the heat exchange tube (7) is a vertical cooling tube, the heat exchange tube is provided with a tube body (36), fins (37) are axially arranged on the outer surface of the tube body (36), inserting strips (38) are axially arranged on the tube body (36), inserting grooves matched with the inserting strips (38) are formed in the inner wall of the middle shell (1), a secondary sealing mechanism is arranged on the rear end shell (3) and the front end shell (2), a matched mounting mechanism is arranged on the secondary sealing mechanism and the middle shell (1), a plurality of heat dissipation protrusions (35) are arranged on the outer wall of the inner core (4), the heat exchange tube (7) is a vertical cooling tube, the tube body (36) is axially arranged with the fins (37), the inserting strips (38) are arranged on the inner wall of the middle shell (1), the heat exchange tube (7) is provided with a groove matched with the auxiliary sealing mechanism, the outer surface of the heat exchange tube (3) is provided with the heat exchange tube (36), the outer surface of the heat exchange tube (2) is fixed by the heat exchange tube (25), sealing rings (27) are fixedly adhered to corresponding end faces of the sealing cylinder (25) and the auxiliary sealing cylinder (26), the mounting mechanism comprises a threaded opening (28) formed in the sealing cylinder (25), the inner surface of the water inlet (16) is in an inner threaded shape, the threaded opening (28) corresponds to the water inlet (16), a water inlet pipe (29) is inserted into the threaded opening (28) and the water inlet (16) through common threads, a filtering mechanism is arranged on the water inlet pipe (29), the filtering mechanism comprises a filter screen (30) and an active carbon filter core (31), the filter screen (30) and the active carbon filter core (31) are jointly mounted in a threaded cylinder (32), the diameter of the threaded cylinder (32) is larger than that of the water inlet pipe (29), the threaded cylinder (32) is sleeved on the water inlet pipe (29), the auxiliary threaded opening (33) is formed in the auxiliary sealing cylinder (26), the inner surface of the water outlet (17) is in an inner threaded shape, the auxiliary threaded opening (33) corresponds to the water outlet (17), the water outlet (33) and the water outlet (33) is provided with common threads (33) and the water outlet pipe (34), the utility model discloses a water inlet pipe, including water inlet pipe (29), outlet pipe (34), sealing cylinder (25), auxiliary sealing cylinder (26), inlet tube (29) with the reinforcing installation mechanism is all fixed to be equipped with to the lateral wall at outlet pipe (34) top, reinforcing installation mechanism is fixed plate (39), fixed plate (39) sealing cylinder (25) with corresponding screw hole (40) have all been seted up on auxiliary sealing cylinder (26), screw hole (40) interpolation is equipped with fixing screw (41), the internal thread of screw hole (40) inside with water inlet (16) with the internal thread of delivery port (17) inside is opposite setting.

2. An electric motor, characterized in that: a hermetically sealed water cooled motor casing having the structure of claim 1.

3. A motor drive apparatus characterized in that: the motor with the motor as claimed in claim 2 and a mechanical working body matched with the motor, wherein the mechanical working body is provided with a water cooling device, a cooling water channel of the water cooling device is communicated with the cooling water containing cavity (6) through the water diversion hole (18) on a motor shell of the motor, and two ends of the heat exchange tube (7) are connected with a hot working fluid communicating pipe on the mechanical working body for water cooling and temperature reduction.

4. The sealed water-cooled motor casing according to claim 1, wherein corresponding mounting openings (42) are formed in the sealing cylinder (25) and the middle casing (1), the mounting openings (42) are communicated with the inner wall of the inner core (4) through cable lead channels, a threaded cover (43) is inserted into the mounting openings (42) in a threaded manner, a through hole through which a cable lead passes is formed in the top surface of the threaded cover (43), and sealing glue is adhered to the inner wall of the through hole.