CN118739738A - Oil pressure device of oil immersed motor and control method - Google Patents

Abstract

The present invention relates to the technical field of motors, and discloses an oil pressure device and a control method for an oil-immersed motor. The structure of the oil-immersed motor comprises an oil-immersed motor, a hydraulic device, an oil tank, an oil inlet end, a flow diversion mechanism, and a liquid guide. The present invention adds a flow diversion mechanism in the oil tank of the oil-immersed motor, drives a swing block to rotate through a telescopic cylinder in the flow diversion mechanism, drives a rotating shaft to rotate through the swing block, and drives a baffle to move in the flow diversion mechanism, so that an internal channel of the flow diversion mechanism can be divided into two chambers, and a flow chamber for hydraulic oil can be selected according to needs, and then the connecting end of the flow diversion mechanism is connected with a small flow diversion pipe, the hydraulic oil will flow from the connecting end to the small flow diversion pipe, and be discharged into the liquid-immersed motor from the small flow diversion pipe, and with the help of the principle of concentric diameter reduction, smaller pipe diameter, and increased flow rate in the pipeline system, the flow rate of the hydraulic oil is accelerated, the hydraulic pressure is increased, and the advantage of a good hydraulic oil starting effect is achieved.

Description

Oil pressure device and control method for oil-immersed motor

Technical Field

The invention belongs to the field of motors, and in particular relates to an oil pressure device and a control method for an oil-immersed motor.

Background Art

An oil-immersed motor is a motor that uses lubricating oil to immerse the insulating part and the heating components of the motor in oil to achieve cooling and isolation. It is widely used because of its simple structure, long service life and high stability. The working principle of the oil-immersed motor actually utilizes the heat dissipation capacity of the oil. By immersing the insulating part and the heating components of the motor in oil, the purpose of cooling and isolating the motor is achieved. However, the prior art has the following deficiencies:

When the existing oil-immersed motor uses hydraulic oil to cool the inside of the motor, the flow rate of the hydraulic oil entering the motor cannot be controlled, so that the flow rate of the hydraulic oil flowing inside the motor is the same, and the rotor inside the motor cannot be cooled evenly for a long time, which reduces the cooling effect of the oil-immersed motor.

The present application proposes a hydraulic device and a control method for an oil-immersed motor to improve the above-mentioned defects.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an oil pressure device and a control method for an oil-immersed motor having the function of controlling the flow rate of hydraulic oil entering the motor.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

A hydraulic device and control method for an oil-immersed motor, the structure of which includes an oil-immersed motor, a hydraulic device and an oil tank, one side of the oil-immersed motor is connected to the hydraulic device, and the other side of the hydraulic device is connected to the oil tank.

In a specific feasible implementation scheme, the oil tank includes an oil inlet, a partition, a placement cavity and a diverter mechanism. The oil tank is equipped with an oil inlet capable of filling the hydraulic oil in the oil tank. A partition is installed inside the oil tank, and the partition can divide the interior of the oil tank to form a placement cavity on one side. A diverter mechanism is installed in the placement cavity.

In a specific feasible implementation scheme, the diversion mechanism includes a connecting end, a diversion end, a small diversion tube, a large diversion tube and a control mechanism. A connecting end is provided on one side of the diversion mechanism, and two diversion ends are provided on the other side of the diversion mechanism. A small diversion tube and a large diversion tube are respectively connected to the two diversion ends. A control mechanism is installed on the top of the diversion mechanism.

In a specific possible implementation manner, the other ends of the large shunt tube and the small shunt tube are connected to a hydraulic press, the diameter of the small shunt tube is smaller than the diameter of the large shunt tube and both are at the same center as the shunt end.

In a specific feasible implementation scheme, the control mechanism includes a telescopic cylinder, a swing block, a rotating shaft and a baffle, the telescopic cylinder is connected to the diversion mechanism, the piston rod of the telescopic cylinder is connected to the swing block, the swing block is connected to the rotating shaft through a rotating bearing, the rotating shaft is located inside the diversion mechanism and rotates with the diversion mechanism, and a baffle is installed on the side wall of the rotating shaft.

In a specific possible implementation manner, the baffle can rotate inside the flow dividing mechanism along with the rotation of the rotating shaft, thereby dividing the internal channel of the flow dividing mechanism into two chambers.

In a specific possible implementation manner, the oil-immersed motor comprises a main shaft and a liquid guiding member, and a plurality of liquid guiding members are arrayed on the internal main shaft of the oil-immersed motor, and the plurality of liquid guiding members are arranged at intervals.

In a specific possible implementation scheme, the liquid guiding member includes a guide plate and a collar, and the outer side array of the liquid guiding member includes a plurality of guide plates, and collars are installed on a plurality of the guide plates.

In a specific feasible implementation scheme, the oil-immersed motor further includes an outer shell, an oil bottom box, an inclined chamfer and a gathering plate. The oil bottom box is mounted on the bottom of the outer shell by bolts. An inclined chamfer is provided at the connection between the outer shell and the oil bottom box. The inclined chamfer can facilitate the hydraulic oil to flow into the oil bottom box for collection. A plurality of gathering plates are installed on the inner wall of the outer shell.

According to the technical solution proposed above, the oil pressure device and control method of an oil-immersed motor of the present invention have the following beneficial effects:

(1) The present invention adds a diverter mechanism in the oil tank of the oil-immersed motor, drives the swing block to rotate through the telescopic cylinder in the diverter mechanism, and drives the rotating shaft to rotate through the swing block to drive the baffle to move in the diverter mechanism, thereby dividing the internal channel of the diverter mechanism into two chambers, and the flow chamber of the hydraulic oil can be selected according to needs.

(2) The present invention connects the connecting end of the flow diversion mechanism with the small flow diversion pipe, so that the hydraulic oil flows from the connecting end to the small flow diversion pipe and is discharged from the small flow diversion pipe into the oil-immersed motor. By means of the principle of concentric diameter reduction in the pipeline system, the pipeline diameter becomes smaller and the flow rate increases, the flow rate of the hydraulic oil is accelerated and the liquid pressure is increased, thereby achieving the advantage of a good starting effect of the hydraulic oil.

(3) The present invention adds a liquid guide member to the rotor main shaft of the oil-immersed motor. The hydraulic oil will flow into the motor main shaft under the action of gravity to cool the motor. The hydraulic oil will be dispersed and guided under the action of a number of guide plates and rings, so that the flow rate of the hydraulic oil on the main shaft is slowed down and the residence time is increased, thereby increasing the cooling effect on the motor.

(4) The present invention provides a bottom oil box at the bottom of the housing of the oil-immersed motor. The hydraulic oil in the main shaft will flow downward under the action of its own gravity, and flow into the bottom oil box for collection under the gathering and guiding action of the gathering plate. Then, the bottom oil box can be removed to filter the collected hydraulic oil and discharge it into the oil tank for recycling, thereby saving energy consumption.

BRIEF DESCRIPTION OF THE DRAWINGS

Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

FIG1 is a schematic structural diagram of an oil pressure device and a control method for an oil-immersed motor in an embodiment of the present application;

FIG2 is a schematic diagram of the structure of the fuel tank in an embodiment of the present application;

FIG3 is a schematic structural diagram of a flow diversion mechanism in an embodiment of the present application;

FIG4 is a schematic diagram of the internal structure of the diversion mechanism in an embodiment of the present application;

FIG5 is a schematic diagram of the connection between the flow dividing mechanism and the oil immersed motor in an embodiment of the present application;

FIG6 is a schematic diagram of the structure of the motor spindle in an embodiment of the present application;

FIG7 is a schematic diagram of the structure of a liquid guide member in an embodiment of the present application;

FIG. 8 is a schematic diagram of the internal structure of the housing in an embodiment of the present application.

In the figure: oil-immersed motor-1, hydraulic pressure-2, oil tank-3, oil inlet end-31, partition-32, placement cavity-33, diversion mechanism-34, connecting end-341, diversion end-342, small diversion pipe-343, large diversion pipe-344, control mechanism-345, telescopic cylinder-21, swing block-22, rotating shaft-23, baffle-24, main shaft-11, liquid guide part-12, guide plate-121, collar-122, shell-13, bottom oil box-14, inclined chamfer-15, gathering plate-16.

DETAILED DESCRIPTION

In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

Embodiment 1: Please refer to Figures 1 to 5, the specific embodiments of the present invention are as follows:

A hydraulic device and control method for an oil-immersed motor, the structure of which includes an oil-immersed motor 1, a hydraulic pressure device 2 and an oil tank 3. One side of the oil-immersed motor 1 is connected to the hydraulic pressure device 2, and the other side of the hydraulic pressure device 2 is connected to the oil tank 3. The oil tank 3 stores hydraulic oil that can lubricate and cool the internal shaft and rotor of the oil-immersed motor 1.

Please refer to Figure 2. The oil tank 3 includes an oil inlet end 31, a partition 32, a placement cavity 33 and a diverter mechanism 34. The oil tank 3 is equipped with an oil inlet end 31 for filling the hydraulic oil in the oil tank 3. The oil tank 3 is equipped with a partition 32 inside. The partition 32 can divide the inside of the oil tank 3 to form a placement cavity 33 on one side. The placement cavity 33 is equipped with a diverter mechanism 34 for diverting and selecting the hydraulic oil discharged from the oil tank 3.

Please refer to Figure 3. The diverter mechanism 34 includes a connecting end 341, a diverter end 342, a small diverter tube 343, a large diverter tube 344 and a control mechanism 345. A connecting end 341 is provided on one side of the diverter mechanism 34. The connecting end 341 is connected to the partition 32 on the oil tank 3 to allow the hydraulic oil to pass through. Two diverter ends 342 are provided on the other side of the diverter mechanism 34. The two diverter ends 342 are respectively connected to a small diverter tube 343 and a large diverter tube 344. A control mechanism 345 is installed on the top of the diverter mechanism 34.

Please refer to Figure 3. The other ends of the large shunt pipe 344 and the small shunt pipe 343 are connected to the hydraulic device 2, and the hydraulic oil can be discharged into the oil-immersed motor 1 through the hydraulic device 2. The diameter of the small shunt pipe 343 is smaller than the diameter of the large shunt pipe 344 and both are at the same center as the shunt end 342. With the help of the concentric diameter change in the pipeline system, when the small pipe is connected in series with the large pipe, the pipe diameter becomes smaller and the flow rate increases. Therefore, when the hydraulic oil flows from the connecting end 341 to the small shunt pipe 343 and flows out of the small shunt pipe 343, the flow rate of the hydraulic oil will be accelerated, increasing the liquid pressure, thereby achieving the advantage of a good starting effect.

Please refer to Figure 4, the control mechanism 345 includes a telescopic cylinder 21, a swing block 22, a rotating shaft 23 and a baffle 24. The telescopic cylinder 21 is connected to the diversion mechanism 34, the piston rod of the telescopic cylinder 21 is connected to the swing block 22, the swing block 22 is connected to the rotating shaft 23 through a rotating bearing, the rotating shaft 23 is located inside the diversion mechanism 34 and rotates with the diversion mechanism 34, and a baffle 24 is installed on the side wall of the rotating shaft 23.

Please refer to FIG. 4-FIG 5 . The baffle 24 can rotate inside the diverter mechanism 34 along with the rotation of the rotating shaft 23 , thereby dividing the internal passage of the diverter mechanism 34 into two chambers, and the flow chamber of the hydraulic oil can be selected as needed.

Embodiment 2: Please refer to Figures 6 to 8, the specific embodiments of the present invention are as follows:

Please refer to FIG. 6 . The oil-immersed motor 1 includes a main shaft 11 and a liquid guide 12 . A plurality of liquid guides 12 are arranged in an array on the main shaft 11 inside the oil-immersed motor 1 . The plurality of liquid guides 12 are arranged at intervals.

Please refer to Figure 7. The liquid guiding member 12 includes a guide plate 121 and a collar 122. The outer array of the liquid guiding member 12 has a plurality of guide plates 121, and collars 122 are installed on the plurality of guide plates 121. When the hydraulic oil enters the oil-immersed motor 1, it will flow into the motor spindle from top to bottom according to the direction of gravity for cooling. The plurality of guide plates 121 and collars 122 will disperse and guide the hydraulic oil, which can slow down the flow rate of the hydraulic oil on the spindle 11 and increase the residence time, thereby increasing the cooling effect on the motor.

Please refer to Figure 8, the oil-immersed motor 1 also includes a shell 13, a bottom oil box 14, an inclined chamfer 15 and a gathering plate 16. The bottom of the shell 13 is installed with the bottom oil box 14 by bolts. The connection between the shell 13 and the bottom oil box 14 is provided with an inclined chamfer 15. The inclined chamfer 15 can facilitate the hydraulic oil to flow into the bottom oil box 14 for collection. A plurality of gathering plates 16 are installed on the inner wall of the shell 13.

Please refer to Figure 8. The ports of several gathering plates 16 are gradually brought together and are within the range of the bottom oil box 14. When the hydraulic oil splashes on the housing 13 to cool the motor under the action of the motor spindle 11 and the rotor, the hydraulic oil on the housing 13 will flow downward under the action of its own gravity, and flow into the bottom oil box 14 through the gathering and guiding action of the gathering plates 16 to be collected and recycled.

Based on the above embodiment, a method for controlling oil pressure of an oil-immersed motor is specifically implemented as follows:

S1, when the oil-immersed motor 1 needs to be hydraulically cooled and lubricated, the hydraulic oil in the oil tank 3 is discharged into the oil-immersed motor 1 through the hydraulic device 2, and the hydraulic oil passes through the diversion mechanism 34 when being discharged from the oil tank 3;

S2, when the hydraulic oil enters the diverter mechanism 34 through the connecting end 341, it will flow out from the end of the large diverter pipe 344 and enter the oil-immersed motor 1 with the help of the hydraulic device 2 to lubricate and cool the motor;

S3, when the flow rate of the hydraulic oil needs to be adjusted, the telescopic cylinder 21 is driven to operate by an external controller, the telescopic cylinder 21 drives the piston rod to extend and retract, drives the swing block 22 to rotate, and drives the rotating shaft 23 to rotate through the swing block 22, thereby driving the baffle 24 to move in the diverter mechanism 34, and connecting the connecting end 341 of the diverter mechanism 34 with the small diverter pipe 343;

S4, the hydraulic oil will flow from the connection end 341 to the small shunt pipe 343, and then be discharged into the oil-immersed motor 1 from the small shunt pipe 343. By virtue of the concentric diameter change in the pipeline system, the pipeline diameter becomes smaller, and the flow rate increases, the flow rate of the hydraulic oil is accelerated, and the hydraulic pressure is increased, thereby achieving the advantage of a good hydraulic oil starting effect;

S5, after the hydraulic oil enters the oil-immersed motor 1, it will flow into the motor spindle 11 under the action of gravity to cool down. After the hydraulic oil flows into the spindle 11, it will be dispersed and guided by a number of guide plates 121 and collars 122, so that the flow rate of the hydraulic oil on the spindle 11 is slowed down and the residence time is increased, thereby increasing the cooling effect on the motor;

S6, the hydraulic oil in the main shaft 11 will continue to flow downward under the action of its own gravity, and flow into the bottom oil box 14 at the bottom of the oil-immersed motor 1 housing 13 for collection, and then the bottom oil box 14 is removed to filter the collected hydraulic oil and discharge it into the oil tank 3 for recycling.

In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

The above are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims (5)

1. A hydraulic device for an oil-immersed motor, the structure comprising an oil-immersed motor (1), a hydraulic device (2) located on one side of the oil-immersed motor (1), and an oil tank (3) located on the other side of the hydraulic device (2); The oil tank (3) is characterized in that: the oil tank (3) comprises an oil inlet end (31), a partition (32) located inside the oil tank (3), a placement cavity (33) provided inside the oil tank (3), and a flow diversion mechanism (34) installed in the placement cavity (33); The flow dividing mechanism (34) comprises a connecting end (341) disposed on one side of the flow dividing mechanism (34), two flow dividing ends (342) disposed on the other side of the flow dividing mechanism (34) through which hydraulic oil can pass, a small flow dividing pipe (343) and a large flow dividing pipe (344) mounted on the two flow dividing ends (342), and a control mechanism (345) disposed on the top of the flow dividing mechanism (34); The oil-immersed motor (1) comprises a main shaft (11) and a liquid-conducting member (12); a plurality of liquid-conducting members (12) are arranged in an array on the internal main shaft (11) of the oil-immersed motor (1); and the plurality of liquid-conducting members (12) are arranged at intervals; The other ends of the large shunt pipe (344) and the small shunt pipe (343) are connected to the hydraulic device (2); the diameter of the small shunt pipe (343) is smaller than the diameter of the large shunt pipe (344) and both are located at the same center as the shunt end (342); The liquid guiding member (12) comprises a guide plate (121) and a collar (122); the outer side array of the liquid guiding member (12) comprises a plurality of guide plates (121); and the collars (122) are mounted on a plurality of the guide plates (121). 2. The oil pressure device for an oil-immersed motor according to claim 1, characterized in that: the control mechanism (345) comprises a telescopic cylinder (21), a swing block (22) located on the telescopic cylinder (21), a rotating shaft (23) provided on the swing block (22), and a baffle (24) installed on the side wall of the rotating shaft (23). 3. The oil pressure device for an oil-immersed motor according to claim 2, characterized in that: the baffle (24) can separate the internal channel of the diversion mechanism (34) into two chambers as the rotating shaft (23) rotates. 4. The oil pressure device for an oil-immersed motor according to claim 3, characterized in that the oil-immersed motor (1) further comprises a housing (13), an oil bottom box (14) arranged at the bottom of the housing (13), and a plurality of gathering plates (16) located on the inner wall of the housing (13). 5. A control method for an oil-immersed motor oil pressure device, using the oil-immersed motor oil pressure device of claim 4, the control method is as follows: S1, when the oil-immersed motor (1) needs to be hydraulically cooled and lubricated, the hydraulic oil in the oil tank (3) is driven by the hydraulic device (2) to be discharged into the oil-immersed motor (1), and the hydraulic oil passes through the diversion mechanism (34) when being discharged from the oil tank (3); S2, when the hydraulic oil enters the flow dividing mechanism (34) through the connecting end (341), it will flow out from the end of the large flow dividing pipe (344) and enter the oil-immersed motor (1) with the help of the hydraulic device (2) to lubricate and cool the motor; S3, when the flow rate of the hydraulic oil needs to be adjusted, the telescopic cylinder (21) is driven to operate by an external controller, the telescopic cylinder (21) drives the piston rod to extend and retract, drives the swing block (22) to rotate, and drives the rotating shaft (23) to rotate through the swing block (22), thereby driving the baffle (24) to move in the diversion mechanism (34), and connecting the connection end (341) of the diversion mechanism (34) with the small diversion pipe (343); S4, the hydraulic oil will flow from the connection end (341) to the small shunt pipe (343), and then be discharged from the small shunt pipe (343) into the interior of the oil-immersed motor (1). By virtue of the principle that the concentric diameter change in the pipeline system causes the pipeline diameter to decrease and the flow rate to increase, the flow rate of the hydraulic oil is accelerated, and the hydraulic pressure is increased, thereby achieving the advantage of a good hydraulic oil starting effect; S5, after the hydraulic oil enters the oil-immersed motor (1), it flows into the main shaft (11) under the action of gravity to be cooled. After the hydraulic oil flows into the main shaft (11), it is dispersed and guided by a plurality of guide plates (121) and a collar (122), so that the flow rate of the hydraulic oil on the main shaft (11) is slowed down and the residence time is increased, thereby increasing the cooling effect on the motor; S6, the hydraulic oil in the main shaft (11) will continue to flow downward under the action of its own gravity and flow into the bottom oil box (14) at the bottom of the housing (13) of the oil-immersed motor (1) for collection. Then, the bottom oil box (14) can be removed to filter the collected hydraulic oil and discharge it into the oil tank (3) for recycling.