CN114123615B - High-temperature high-pressure water-cooling variable-frequency special motor - Google Patents

Abstract

The invention discloses a high-temperature, high-pressure water-cooled frequency conversion special motor, which belongs to the field of special motors and aims to solve the problem of poor air-cooling cooling effect, short service life of the motor, and poor sealing effect, high temperature and high pressure resistance of the motor. The problem of ventilation inside the motor; through the setting of the front water tank, insulation layer, cavity, water cooling cavity, water cooling structure, heat dissipation cavity and ventilation holes, uniform water cooling and heat dissipation of the front end of the motor and the motor housing can be achieved, extending the At the same time, the heat dissipation chamber and the air hole can ventilate and dissipate heat from the tail end of the motor to avoid overheating of the tail end, thereby improving the cooling effect of the motor; through the setting of the heat conduction plate and the ventilation structure, the water vapor on the inner wall of the motor can be dried in time The exhaust can realize ventilation inside the motor, and can also prevent external moisture from entering the inside of the motor. At the same time, the whole device is sealed in multiple places, thereby improving the high temperature and high pressure resistance of the motor.

Description

A high-temperature, high-pressure water-cooled frequency conversion special motor

technical field

The invention relates to the field of special motors, in particular to a high-temperature, high-pressure water-cooled frequency conversion special motor.

Background technique

As the main power source of the drive, the motor is widely used in various fields such as industry, agriculture, national defense, public facilities, and household appliances. With the rapid development of frequency conversion technology, AC variable frequency speed regulating motors have been widely used in metallurgy, lifting, textile, chemical and other industries. A speed-regulating motor. Among them, special motors refer to special special motors that are designed and manufactured separately for the special needs of a certain type of mechanical equipment in order to meet the different performance requirements of various mechanical equipment for their drive motors. The growth of the national economy is the special motor industry. The continuous and rapid development has laid a good foundation. Special motors are also fuzzy concepts relative to traditional brushed DC motors and AC asynchronous motors. Special motors and generators are basically the same in terms of comprehensive structure, and both are reversible. In terms of working principle, special motors use current to convert mechanical energy to drive external objects to rotate, while generators use electromagnetic induction to convert mechanical energy into electrical energy. Special motors are mainly divided into three categories: new rotary motors, linear motors and non-electromagnetic motors. Traditionally, except for brushed DC motors and AC asynchronous motors, all motors are called special motors. Motors that are not used in special occasions are special motors. With the adjustment and optimization of product structure in small and medium-sized motors, special-purpose motors will become the focus of the development of the motor industry, and their market demand and development speed will be in a leading position in the industry. Large-scale enterprises in the small and medium-sized motor industry produce more types and series of motors, and their overall strength is dominant; smaller-scale enterprises focus on the production of specific one or several types of motors, and strive to gain advantages in the segmented product market. For a long time in our country, there are few varieties of special products for small and medium-sized motors, and the product structure is unreasonable. There are many basic series and few derivative special series; there are many general varieties and few special varieties. According to the needs of the market, various enterprises have also paid attention to the development of special motors. After the "Tenth Five-Year Plan" and "Eleventh Five-Year Plan" technological transformation and adjustment of product structure, special special motors have developed to varying degrees. Therefore, some high-efficiency and energy-saving motors, high-grade export motors and special electromechanical motors will have good market prospects.

At present, there are certain disadvantages in the use of existing special motors. The heat dissipation form is mainly to use cooling fans or fans to cool the motor through the air cooling system of air flow. The cooling effect is poor, the internal temperature of the internal motor is too high, and the service life is relatively short. Short, and the sealing effect of the motor is not good, the performance of high temperature and high pressure resistance is poor, and the inner wall is also prone to water mist, so it is impossible to ventilate the inside of the motor and discharge the moisture in time.

Contents of the invention

In view of the problems existing in the prior art, the present invention discloses a high-temperature, high-pressure water-cooled variable-frequency special motor. The adopted technical solution is to include a motor housing, a motor shaft, a front bearing flange and a rear bearing. The motor The inside of the housing is provided with a motor shaft, one side of the motor housing is fixedly connected with a front bearing flange, and the inside of the motor housing is provided with a rear bearing at one end of the motor shaft, and the front bearing flange is The front end of the front end is provided with a front inner end cover, a front flange and an embedded flange in turn, and the rear end of the front bearing flange is provided with a front bearing end cover, through the front inner end cover, front flange, embedded flange and The setting of the front bearing end cover can seal the front end of the motor housing and limit the front bearing flange. The inside of the front flange is provided with a front water tank, and the inside of the embedded flange is provided with a Insulation layer, the interior of the insulation layer is provided with a cavity, through the setting of the front water tank, the insulation layer and the cavity, water can be introduced into the front water tank, and then discharged after flowing through the cavity in the insulation layer, so as to realize the front method The water cooling and heat dissipation of the blue, insulation layer and motor shaft improves the cooling effect. The inner wall of the motor housing is fixedly connected with a heat conducting plate, and the inside of the heat conducting plate is provided with a ventilation structure. Through the setting of the heat conducting plate and the ventilation structure, it can The ventilation structure is used to dry and discharge the water vapor on the inner wall of the motor in time to achieve ventilation inside the motor, and at the same time, the sealing effect is better, which can prevent external moisture from entering the inside of the motor. The outer surface of the motor housing is fixedly connected with a water cooling chamber , the interior of the water-cooling chamber is provided with a water-cooling structure, through the water-cooling chamber and the water-cooling structure, the cold water can be introduced into the water-cooling chamber, and the cold water can flow in a Z-shaped waterway, so as to realize uniform water-cooling and heat dissipation of the motor casing, and improve the For the cooling effect of the motor casing, the internal temperature of the motor casing is avoided from being too high, and the service life of the motor is prolonged. The rear end of the rear bearing is provided with a rear bearing end cover, and the tail end of the motor casing is fixed A cover plate is connected, a heat dissipation cavity is provided between the rear bearing and the cover plate, and a vent hole is provided below the heat dissipation cavity. Through the setting of the heat dissipation cavity and the vent hole, the tail end of the motor can be ventilated and radiated to avoid the tail end overheated.

As a preferred technical solution of the present invention, between the front bearing flange and the front bearing cover, between the front bearing flange and the front inner cover, between the motor housing and the front flange, between the front flange Between the embedded flange, between the rear bearing and the rear bearing end cover, between the motor housing and the cover plate are all connected by bolts, and the connection stability can be improved by using bolts everywhere, and the installation and disassembly at the same time More convenient.

As a preferred technical solution of the present invention, the inside of the front bearing flange is provided with a front bearing, and both the front bearing and the rear bearing are deep groove ball insulated bearings. By using deep groove ball insulated bearings, the motor can be reduced Frictional resistance to shaft rotation.

As a preferred technical solution of the present invention, the front end of the rear bearing is provided with a rear oil retaining ring, and a felt ring is arranged between the front inner end cover, the front bearing end cover, the rear oil retaining ring and the motor shaft, The sealing performance of the motor shaft can be improved through the arrangement of the rear oil deflector ring and the felt ring.

As a preferred technical solution of the present invention, the front water tank is in communication with the cavity, the bottom of the front water tank is provided with a first water inlet, the top of the front water tank is provided with a first water outlet, through the first water inlet And the setting of the first water outlet can facilitate the flow of cold water into and out of the front sink.

As a preferred technical solution of the present invention, a sealing gasket is provided inside the thermal insulation layer, a graphite gasket is provided between the embedded flange and the front flange, and a graphite gasket is provided between the front bearing flange and the front flange and the front flange. O-ring sealing rings are arranged between the motor housings, and wave gaskets are arranged between the front inner end cover and the front bearing flange. Through the settings of sealing gaskets, graphite gaskets, O-ring sealing rings and wave gaskets, It can improve the sealing performance of the motor so as to improve the high temperature resistance and high pressure resistance performance of the motor.

As a preferred technical solution of the present invention, the ventilation structure includes an adjustment handle, a bevel gear, a rotating rod, a screw, a plug, a through hole, a desiccant, a ventilation hole, a blocking cover, and the outer surface of the motor housing A ventilation hole is provided, and a cover is provided inside the ventilation hole, and an adjustment handle is provided below the cover, and a screw rod is movably connected to the bottom of the adjustment handle through a rotating rod and a bevel gear, and the outer surface of the screw rod A plug is movably connected, and a through hole matching the plug is provided inside the heat conducting plate, and a desiccant is provided on one side of the through hole, through the adjustment handle, bevel gear, rotating rod, screw, plug, etc. , Through holes, desiccant, ventilation holes, and cover settings can realize ventilation inside the motor, and at the same time, the sealing effect is better, which can prevent external moisture from entering the inside of the motor.

As a preferred technical solution of the present invention, the water-cooling structure includes a water channel, a second water inlet and a second water outlet, and the inside of the water-cooling chamber is provided with a water channel, and the water channel is in a Z-shaped structure. There are two second water inlets at the bottom, and two second water outlets at the top of the water-cooling chamber. Through the arrangement of water channels, second water inlets and second water outlets, uniform water cooling of the motor housing can be achieved Heat dissipation, improve the cooling effect, avoid excessive temperature inside the motor shell, and prolong the service life of the motor.

As a preferred technical solution of the present invention, a terminal is provided above the rear bearing, and the terminal is fixed by an insulating sleeve, an outer hexagonal flange plug and an outer hexagonal nut, and the connection between the insulating sleeve and the terminal A plurality of rubber rings are arranged between, through the setting of terminal posts, insulating sleeves, outer hexagonal flange plugs, outer hexagonal nuts and rubber rings, the insulating sleeves, outer hexagonal flange face plugs, and outer hexagonal nuts can be connected to the terminal posts For installation and fixing, the rubber ring improves the sealing performance.

Beneficial effects of the present invention: the present invention can introduce water into the front water tank through the setting of the front water tank, the heat preservation layer, the cavity, the water cooling chamber, the water cooling structure, the cooling chamber and the ventilation hole, and then flow through the cavity in the heat preservation layer. discharge, realize water cooling and heat dissipation of the front end of the motor, and can lead cold water into the water cooling cavity, so that the cold water flows in a Z-shaped waterway, realize uniform water cooling and heat dissipation of the motor shell, improve the cooling effect of the motor shell, and avoid electric shock. The internal temperature of the machine shell is too high, which prolongs the service life of the motor. At the same time, the heat dissipation chamber and the vent hole can ventilate and dissipate heat from the tail end of the motor to avoid overheating of the tail end, thereby improving the cooling effect of the motor; through the heat conduction plate and the ventilation structure The installation can use the ventilation structure to dry and discharge the water vapor on the inner wall of the motor in time, realize the ventilation inside the motor, and prevent the external moisture from entering the inside of the motor. The high temperature and high pressure resistance performance of the motor.

Description of drawings

Fig. 1 is the schematic diagram of the front view section structure of the present invention;

Fig. 2 is a structural schematic diagram of the main part of the present invention;

Fig. 3 is the schematic diagram of the enlarged structure of place A of the present invention;

Fig. 4 is the schematic diagram of enlarged structure at B place of the present invention;

Fig. 5 is a schematic diagram of an enlarged structure at point C of the present invention.

In the figure: 1. Motor housing; 2. Motor shaft; 3. Front bearing flange; 4. Rear bearing; 5. Front inner end cover; 6. Front flange; 7. Embedded flange; 8. Front Bearing end cover; 9, front water tank; 10, insulation layer; 11, cavity; 12, heat conduction plate; 13, ventilation structure; 1301, adjustment handle; 1302, bevel gear; 1303, rotating rod; 1304, screw rod; Plug; 1306, through hole; 1307, desiccant; 1308, ventilation hole; 1309, cover; 14, water cooling cavity; 15, water cooling structure; 1501, water channel; 1502, second water inlet; 1503, second water outlet ; 16, rear bearing end cover; 17, cover plate; 18, cooling chamber; 19, vent hole; 20, bolt; 21, front bearing; 22, rear oil retaining ring; 23, felt ring; 24, first water inlet ;25, the first water outlet; 26, sealing gasket; 27, graphite gasket; 28, O-shaped sealing ring; 29, wave washer; 30, terminal; 31, insulating sleeve; ; 33, outer hex nut; 34, rubber ring.

Detailed ways

Example 1

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

As shown in Figures 1 to 5, the present invention discloses a high-temperature, high-pressure water-cooled variable-frequency special motor. The technical solution adopted is to include a motor housing 1, a motor shaft 2, a front bearing flange 3 and a rear bearing 4. The inside of the motor housing 1 is provided with a motor shaft 2, one side of the motor housing 1 is fixedly connected with a front bearing flange 3, and the inside of the motor housing 1 is located at one end of the motor shaft 2. Rear bearing 4, the front end of the front bearing flange 3 is provided with a front inner end cover 5, a front flange 6 and an embedded flange 7 in turn, and the rear end of the front bearing flange 3 is provided with a front bearing end cover 8 , when installing the motor, first install the motor shaft 2, the front bearing flange 3, the front inner end cover 5, the front flange 6, the embedded flange 7 and the front bearing end cover 8, and the inside of the front flange 6 is provided with The front water tank 9, the inside of the embedded flange 7 is provided with an insulation layer 10, the inside of the insulation layer 10 is provided with a cavity 11, cold water is introduced into the front water tank 9, and flows through the cavity in the insulation layer 10 11 and discharged, the front end of the motor can be water-cooled to improve the cooling effect. The inner wall of the motor housing 1 is fixedly connected with a heat conduction plate 12, and the inside of the heat conduction plate 12 is provided with a ventilation structure 13. Using the heat conduction plate 12 and The ventilation structure 13 can dry and discharge the water vapor on the inner wall of the motor in time, and ventilate and ventilate, and can also prevent external moisture from entering the inside of the motor. The outer surface of the motor housing 1 is fixedly connected with a water cooling chamber 14, and the water cooling chamber 14 A water-cooling structure 15 is arranged inside, and cold water is introduced into the water-cooling chamber 14. The water-cooling structure 15 makes the cold water flow in a Z-shaped waterway, which can uniformly water-cool and dissipate the motor casing 1, improve the cooling effect, and avoid the internal temperature of the motor casing 1 from being too high. high, prolonging the service life of the motor, the rear end of the rear bearing 4 is provided with a rear bearing cover 16, the rear bearing cover 16 limits the tail end of the motor shaft 2, and the tail end of the motor housing 1 A cover plate 17 is fixedly connected, and the cover plate 17 seals the tail end of the motor housing 1. A heat dissipation chamber 18 is provided between the rear bearing 4 and the cover plate 17, and a vent hole 19 is provided below the heat dissipation chamber 18. , the heat in the heat dissipation cavity 18 can be discharged from the vent hole 19 in time.

As a preferred technical solution of the present invention, between the front bearing flange 3 and the front bearing end cover 8, between the front bearing flange 3 and the front inner end cover 5, between the motor housing 1 and the front flange 6 between the front flange 6 and the embedded flange 7, between the rear bearing 4 and the rear bearing end cover 16, and between the motor housing 1 and the cover plate 17 are all connected by bolts 20, and the bolts 20 are connected in multiple places , so that the connection between the various components is more stable, and at the same time it is convenient for installation and disassembly.

As a preferred technical solution of the present invention, the front bearing flange 3 is provided with a front bearing 21, the front bearing 21 and the rear bearing 4 are both deep groove ball insulated bearings, and the front bearing 21 and the rear bearing 4 adopt The deep groove ball insulated bearing can reduce the frictional resistance with the motor shaft 2.

As a preferred technical solution of the present invention, the front end of the rear bearing 4 is provided with a rear oil retaining ring 22 , and between the front inner end cover 5 , the front bearing end cover 8 , the rear oil retaining ring 22 and the motor shaft 2 Both are provided with a felt ring 23, and the rear oil deflector ring 22 and the felt ring 23 improve the sealing performance of the motor.

As a preferred technical solution of the present invention, the front water tank 9 communicates with the cavity 11, the bottom of the front water tank 9 is provided with a first water inlet 24, and the top of the front water tank 9 is provided with a first water outlet 25 , the first water inlet 24 and the first water outlet 25 can facilitate the entry and exit of cold water into the front water tank 9 .

As a preferred technical solution of the present invention, a sealing gasket 26 is provided inside the thermal insulation layer 10, a graphite gasket 27 is provided between the embedded flange 7 and the front flange 6, and the front bearing flange 3 and the front flange 6 and the motor housing 1 are provided with an O-ring seal 28, and between the front inner end cover 5 and the front bearing flange 3 are provided with a wave washer 29, a sealing gasket 26, a graphite pad Sheet 27, O-shaped sealing ring 28 and wave washer 29 can improve the sealing performance everywhere, and then make the motor more resistant to high temperature and high pressure.

As a preferred technical solution of the present invention, the ventilation structure 13 includes an adjustment handle 1301, a bevel gear 1302, a rotating rod 1303, a screw 1304, a plug 1305, a through hole 1306, a desiccant 1307, a ventilation hole 1308, and a cover 1309 , the outer surface of the motor housing 1 is provided with a ventilation hole 1308, the interior of the ventilation hole 1308 is provided with a cover 1309, the bottom of the cover 1309 is provided with an adjustment handle 1301, and the bottom of the adjustment handle 1301 A screw 1304 is movably connected through the rotating rod 1303 and the bevel gear 1302, and the outer surface of the screw 1304 is movably connected with a plug 1305, and the inside of the heat conducting plate 12 is provided with a through hole 1306 matching the plug 1305. One side of the through hole 1306 is provided with a desiccant 1307, open the cover 1309, turn the adjusting handle 1301, so that the rotating rod 1303 and the screw rod 1304 drive the screw rod 1304 to rotate, and then adjust the position of the plug 1305, so that the motor housing The water vapor in 1 is dried by the desiccant 1307 and discharged from the through hole 1306 and the ventilation hole 1308, so as to realize ventilation inside the motor.

As a preferred technical solution of the present invention, the water cooling structure 15 includes a water channel 1501, a second water inlet 1502 and a second water outlet 1503, and the water cooling chamber 14 is provided with a water channel 1501 inside, and the water channel 1501 is Z-shaped structure, the bottom of the water cooling chamber 14 is provided with two second water inlets 1502, and the top of the water cooling chamber 14 is provided with two second water outlets 1503, cold water is introduced into the water cooling chamber 14 from the second water inlets 1502, and the cold water After flowing through the Z-shaped water channel 1501 , it is discharged from the second water outlet 1503 to achieve uniform water cooling and heat dissipation for the motor housing 1 .

As a preferred technical solution of the present invention, a terminal post 30 is arranged above the rear bearing 4, and the terminal post 30 is fixed by an insulating sleeve 31, an outer hexagonal flange surface plug 32 and an outer hexagonal nut 33. A plurality of rubber rings 34 are arranged between the insulating sleeve 31 and the terminal 30 , the terminal 30 can be fixed by the insulating sleeve 31 , the outer hexagonal flange plug 32 and the outer hexagonal nut 33 , and the rubber rings 34 improve the sealing performance.

Working principle of the present invention: when installing the motor, first install the motor housing 1, the motor shaft 2, the front bearing flange 3, the front inner end cover 5, the front flange 6, the embedded flange 7 and the front bearing with bolts 20 End cover 8, then use the rear bearing end cover 16 to limit the tail end of the motor shaft 2, then use the insulating sleeve 31, the outer hexagonal flange surface plug 32 and the outer hexagonal nut 33 to fix the terminal post 30, and the rubber ring 34 to improve the sealing Finally, the cover plate 17 is installed to seal the tail end of the motor housing 1; when using the motor, cold water is introduced from the first water inlet 24 into the front water tank 9, and flows through the cavity 11 in the insulation layer 10 from the first Once the water outlet 25 is discharged, the front end of the motor can be water-cooled to improve the cooling effect, and then the cover 1309 is opened, and the adjusting handle 1301 is turned to make the rotating rod 1303 and the screw rod 1304 drive the screw rod 1304 to rotate, and then the position of the plug 1305 is adjusted , the water vapor in the motor housing 1 is dried through the desiccant 1307 in the heat conducting plate 12 and then discharged from the through hole 1306 and the ventilation hole 1308 to realize ventilation inside the motor, and then cold water is introduced from the second water inlet 1502 In the water cooling chamber 14, the cold water flows through the water channel 1501 of the Z-shaped structure and is discharged from the second water outlet 1503 to realize uniform water cooling and heat dissipation of the motor housing 1. Finally, the heat in the cooling chamber 18 can be discharged in time from the vent hole 19, further Yes, the front bearing 21 and the rear bearing 4 of the deep groove ball insulated bearing can reduce the frictional resistance with the motor shaft 2, the rear oil retaining ring 22, the felt ring 23, the wave washer 29, the sealing gasket 26, the graphite gasket 27, The O-shaped sealing ring 28 and the wave washer 29 can improve the sealing performance of the various parts of the motor, thereby making the motor more resistant to high temperature and high pressure.

The mechanical connection involved in the present invention is a common means used by those skilled in the art, and the technical inspiration can be obtained through a limited number of tests, which belongs to common knowledge.

Components not specified herein are prior art.

Although the above-mentioned specific embodiments of the present invention have been described in detail, the present invention is not limited to the above-mentioned embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various The modification or deformation without creative work is still within the protection scope of the present invention.

Claims (8)

1. A high-temperature, high-pressure water-cooled frequency conversion special motor, comprising a motor housing (1), a motor shaft (2), a front bearing flange (3) and a rear bearing (4), the motor housing (1) A motor shaft (2) is arranged inside, and a front bearing flange (3) is fixedly connected to one side of the motor housing (1), and the inside of the motor housing (1) is located on the side of the motor shaft (2) One end is provided with a rear bearing (4), which is characterized in that: the front end of the front bearing flange (3) is sequentially provided with a front inner end cover (5), a front flange (6) and an embedded flange (7), The rear end of the front bearing flange (3) is provided with a front bearing cover (8), the inside of the front flange (6) is provided with a front water tank (9), and the embedded flange (7) An insulating layer (10) is arranged inside, and a cavity (11) is opened inside the insulating layer (10), and a heat conducting plate (12) is fixedly connected to the inner wall of the motor housing (1), and the heat conducting plate The inside of (12) is provided with ventilation structure (13), and described ventilation structure (13) comprises adjusting handle (1301), bevel gear (1302), rotating rod (1303), screw rod (1304), plug (1305), Through hole (1306), desiccant (1307), ventilation hole (1308), cover (1309), the outer surface of the motor housing (1) is provided with a ventilation hole (1308), and the ventilation hole (1308 ) is provided with a cover (1309), the bottom of the cover (1309) is provided with an adjustment handle (1301), and the bottom of the adjustment handle (1301) is moved by the rotating rod (1303) and the bevel gear (1302) A screw (1304) is connected, the outer surface of the screw (1304) is movably connected with a plug (1305), and the inside of the heat conducting plate (12) is provided with a through hole (1306) matching the plug (1305). ), one side of the through hole (1306) is provided with a desiccant (1307), the outer surface of the motor housing (1) is fixedly connected with a water cooling chamber (14), and the inside of the water cooling chamber (14) A water-cooling structure (15) is provided, the rear end of the rear bearing (4) is provided with a rear bearing end cover (16), and the rear end of the motor housing (1) is fixedly connected with a cover plate (17). A cooling chamber (18) is provided between the rear bearing (4) and the cover plate (17), and a vent hole (19) is provided below the cooling chamber (18). 2. A high-temperature, high-pressure water-cooled frequency conversion special motor according to claim 1, characterized in that: between the front bearing flange (3) and the front bearing end cover (8), between the front bearing flange (3) and the front bearing cover (8), Between the front inner cover (5), between the motor housing (1) and the front flange (6), between the front flange (6) and the embedded flange (7), between the rear bearing (4) and All are connected by bolts (20) between the rear bearing end covers (16) and between the motor housing (1) and the cover plate (17). 3. A high-temperature, high-pressure water-cooled frequency conversion special motor according to claim 1, characterized in that: a front bearing (21) is arranged inside the front bearing flange (3), and the front bearing (21) and the rear Bearings (4) are deep groove ball insulated bearings. 4. A high-temperature, high-pressure water-cooled frequency conversion special motor according to claim 1, characterized in that: the front end of the rear bearing (4) is provided with a rear oil retaining ring (22), and the front inner end cover (5) , the front bearing end cover (8), the rear oil retaining ring (22) and the motor shaft (2) are all provided with a felt ring (23). 5. A high-temperature, high-pressure water-cooled variable-frequency special motor according to claim 1, characterized in that: the front water tank (9) communicates with the cavity (11), and the bottom of the front water tank (9) is provided with a first A water inlet (24), and a first water outlet (25) is arranged on the top of the front water tank (9). 6. A high-temperature, high-pressure water-cooled variable-frequency special motor according to claim 1, characterized in that: a sealing gasket (26) is provided inside the insulation layer (10), and the embedded flange (7) is connected to the front A graphite gasket (27) is arranged between the flanges (6), and an O-ring ( 28), a wave washer (29) is arranged between the front inner end cover (5) and the front bearing flange (3). 7. A high-temperature, high-pressure water-cooled variable-frequency special motor according to claim 1, characterized in that: the water-cooled structure (15) includes a water channel (1501), a second water inlet (1502) and a second water outlet (1503) , the inside of the water-cooling chamber (14) is provided with a water channel (1501), the water channel (1501) is in a Z-shaped structure, and the bottom of the water-cooling chamber (14) is provided with two second water inlets (1502), so Two second water outlets (1503) are arranged on the top of the water cooling chamber (14). 8. A high-temperature, high-pressure water-cooled frequency conversion special motor according to claim 1, characterized in that: a terminal post (30) is arranged above the rear bearing (4), and the terminal post (30) passes through an insulating sleeve ( 31), the outer hexagon flange face plug (32) and the outer hexagon nut (33) are fixed, and a plurality of rubber rings (34) are arranged between the insulating sleeve (31) and the terminal post (30).

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