Generator with sliding bearing automatic cooling and lubricating system

Abstract

The invention belongs to the technical field of generator sets, and particularly relates to a generator with a sliding bearing automatic cooling and lubricating system, which comprises a motor body with a supporting plate, and solves the problem that the existing generator is not provided with a sliding bearing automatic cooling and lubricating structure. The temperature sensors on the front sliding bearing and the rear sliding bearing feed back the temperature of cooling oil in inner cavities of the bearings to the temperature control module, and when it is judged that the temperature of the cooling oil of the bearings is higher than 70 DEG C, the temperature control module sends a signal to the relay, so that motors on the front bearing cooler and the rear bearing cooler are powered on, and an oil way is circularly cooled; the temperature sensors on the front sliding bearing and the rear sliding bearing feed back the temperature of cooling oil in inner cavities of the bearings to the temperature control module, when it is judged that the temperature of the cooling oil of the bearings is lower than 40 DEG C, the temperature control module sends a signal to the relay, motors on the front bearing cooler and the rear bearing cooler are powered off, and self-cooling is conducted through the sliding bearings.

Description

Technical Field

[0001] The invention relates to the technical field of generator sets, in particular to a generator with an automatic cooling and lubrication system for sliding bearings. Background Art

[0002] The generator mainly generates electricity by rotating the rotor in the magnetic field and cutting the magnetic lines of force to produce induced electromotive force. The sliding bearing supports the rotor in this process, allowing the rotor to rotate stably. The sliding bearing is usually composed of a bearing shell and a journal. There is a layer of lubricating oil film between the bearing shell and the journal. This oil film can reduce friction and wear, and also plays a role in cooling and lubrication.

[0003] The prior art authorization announcement number is: CN212744092U, and its name is a steam turbine generator sliding bearing that is easy to install, comprising an upper bearing seat and a lower bearing seat that are embedded and installed up and down, a pair of bearing shells are slidably installed between the lower bearing seat and the upper bearing seat, and a shaft is installed in the pair of bearing shells. A lower sliding cavity is opened at the upper end of the lower bearing seat, and a pair of bearing shells distributed on the left and right are fixed by a pair of installation mechanisms distributed up and down. The installation mechanism is covered on the outer wall of the bearing shell, which makes it easy to realize that a pair of bearing shells form a whole and then tightly install the shaft, and then the upper bearing seat and the lower bearing seat that are embedded and connected up and down cooperate to realize the installation of the bearing. When dismantling, the upper bearing seat and the installation mechanism are removed outwards to separate the bearing shells, thereby realizing the removal of the shaft. The operation is simple, and after installation, it has strong working stability and can withstand large impact loads.

[0004] The above-mentioned device realizes the installation of the bearing by cooperating with the upper bearing seat and the lower bearing seat which are embedded and connected up and down. The current sliding bearing cooling is to set up an oil suction station on the ship for cooling. This cooling method occupies a large space and has high cost; secondly, the motor has its own cooling device. When the motor is running, the cooler is directly powered on. The cooler is in a working state for a long time and is easy to be damaged, which also causes waste of resources and high operating costs. The existing generator does not have a structure for automatic cooling and lubrication of the sliding bearing. It is necessary to design a generator with an automatic cooling and lubrication system for sliding bearings for improvement. Summary of the invention

[0005] The technical problem solved by the present invention is that the current sliding bearing cooling is performed by setting an oil suction station on board for cooling, which occupies a large space and has high cost; secondly, the motor has its own cooling device, and the cooler is directly powered on when the motor is running. The cooler is in a working state for a long time and is easy to be damaged, which also causes waste of resources and high operating costs. The existing generator does not have a structure for automatic cooling and lubrication of the sliding bearing, and provides a generator with an automatic cooling and lubrication system for the sliding bearing.

[0006] In order to solve the above technical problems, the present invention provides a generator with an automatic cooling and lubrication system for sliding bearings, comprising a motor body with a support plate, on which a front sliding bearing, a front oil pipe, a front bearing cooler, a front end cover, a stator, a rotor, a rear end cover, a rear sliding bearing, a rear oil pipe, a rear bearing cooler are sequentially installed, and a front sliding bearing is installed at the front end of the rotor, the front sliding bearing includes a first oil inlet and a first oil outlet opened on the front sliding bearing, a first temperature sensor is fixedly connected to the front sliding bearing, a front bearing cooler is fixedly connected to the front end cover, the front bearing cooler includes an oil inlet and an oil outlet opened on the front sliding bearing, an electric motor is installed on the motor body, a fan is installed at the top of the motor, and a fan is installed at the top of the fan. A heat sink is installed, one end of the front oil pipe is connected to the oil chamber in the front sliding bearing, and the other end is connected to the front bearing cooler, a rear sliding bearing is installed at the rear end of the rotor, the rear sliding bearing includes a second oil inlet and a second oil outlet opened on the rear sliding bearing, a second temperature sensor is fixedly connected to the rear sliding bearing, a rear bearing cooler with the same structure as the front bearing cooler is installed on the rear end cover, one end of the rear oil pipe is connected to the oil chamber in the rear sliding bearing, and the other end is connected to the rear bearing cooler, a box is installed above the stator, a temperature control module and a relay are arranged in the box, and the temperature control module is electrically connected to the first temperature sensor and the second temperature sensor, and the relay is electrically connected to the front bearing cooler, the rear bearing cooler and the motor.

[0007] Preferably, sliding components are installed at the four corners of the bottom end of the support plate, and the sliding components include a group of card slots symmetrically opened at both ends of the support plate, and card blocks are slidably connected in the card slots.

[0008] Preferably, a threaded shaft is fixedly connected to the bottom end of the block, a universal wheel is fixedly connected to the bottom end of the threaded shaft, and a threaded sleeve is threadedly connected to the outer wall of the threaded shaft.

[0009] Preferably, the height of the threaded shaft is greater than the height between the bottom wall of the threaded shaft and the bottom wall of the universal wheel.

[0010] Preferably, a lifting assembly is symmetrically installed on the support plate, and the lifting assembly includes a group of screw holes symmetrically opened on the top of the support plate, screws are installed in the screw holes, and the bottom end of the screw is rotatably connected to a base in contact with the ground.

[0011] Preferably, a belt pulley is sleeved on the outer wall of the top of each set of lead screws, and the two belt pulleys are connected by a belt.

[0012] Preferably, a limiting groove is provided at the top end of the lead screw, a micro servo motor is detachably connected in the limiting groove, an output end of the micro servo motor is connected to a limiting block, and the limiting block is snap-fitted to the limiting groove.

[0013] Compared with the related art, the present invention has the following beneficial effects:

[0014] 1. The present invention sets a front bearing cooler and a rear sliding bearing. When the motor body is running under heavy load, the first temperature sensor and the second temperature sensor on the front sliding bearing feed back the temperature of the cooling oil in the inner cavity of the bearing to the temperature control module. The temperature control module identifies the signals transmitted by the first temperature sensor and the second temperature sensor, and determines whether the temperature of the bearing cooling oil is higher than 70°C. When the oil temperature is higher than 70°C, the temperature control module sends a signal to the relay inside the box. At this time, the relay is activated, so that the motors on the front bearing cooler and the rear bearing cooler are energized, and the oil circuit is circulated and cooled to reduce the oil temperature. When the motor body is running under light load, When the oil temperature is lower than 40℃, the temperature control module sends a signal to the relay inside the housing, and the relay is actuated to cut off the power to the motors on the front bearing cooler and the rear bearing cooler, and the sliding bearing is self-cooled instead. Through the above, the working power supply of the cooler can be switched intelligently, the cooling mode of the sliding bearing can be switched, energy consumption can be saved, and cost can be saved.

[0015] 2. The present invention provides a sliding assembly and a lifting assembly. When the motor body is moved, the micro servo motor can be connected to the lead screw through the clamping connection of the limit block and the limit groove, and then the micro servo motor is turned on to drive the lead screw, and the two driving lead screws of the same group are driven to rotate synchronously through the belt pulley and the belt, so that the support plate drives the upper motor body to move up, and the support plate is supported off the ground. At this time, the clamping block is slid into the clamping groove from the side, and the threaded sleeve is rotated to rotate it until the surface of the threaded shaft contacts the bottom of the clamping block, thereby exposing the universal wheel, and the motor body can be easily moved by rolling the universal wheel. After moving to a suitable position, the threaded sleeve can be rotated in the reverse direction to cover the outside of the universal wheel and contact the ground, so as to temporarily position it. If the positioning is determined, the clamping block can be taken out of the clamping groove, and the micro servo motor can be driven in the reverse direction to drive the lead screw to rotate in the reverse direction, so that the support plate drives the motor body to fall to the ground for positioning, thereby effectively achieving the effect of easily moving the motor body.

[0016] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the axle measurement of the motor of the present invention;

[0019] Figure 2 It is a side cross-sectional schematic diagram of the motor of the present invention;

[0020] Figure 3 For the present invention Figure 2 The enlarged schematic diagram at A in the middle;

[0021] Figure 4 For the present invention Figure 2 The enlarged schematic diagram of point B in the middle;

[0022] Figure 5 It is a front cross-sectional schematic diagram of the motor of the present invention;

[0023] Figure 6 It is a schematic structural diagram of a front bearing cooler of the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of the lifting assembly of the present invention;

[0025] Figure 8 It is a schematic diagram of the structure of the sliding assembly of the present invention.

[0026] Numbers in the figure:

[0027] 1. Motor body; 2. Front sliding bearing; 201. First oil inlet; 202. First oil outlet; 203. First temperature sensor; 3. Front oil pipe; 4. Front bearing cooler; 401. Oil inlet and outlet; 402. Heat sink; 403. Fan; 404. Motor; 5. Front cover; 6. Stator; 7. Rotor; 8. Rear cover; 9. Rear sliding bearing; 901. Second oil inlet; 902. Second oil outlet; 903. Second temperature sensor; 10. Rear oil pipe; 11. Rear bearing cooler; 12. Box; 121. Temperature control module; 122. Relay; 13. Support plate; 14. Sliding assembly; 141. Universal wheel; 142. Threaded sleeve; 143. Block; 144. Slot; 145. Threaded shaft; 15. Lifting assembly; 151. Screw hole; 152. Lead screw; 153. Belt pulley; 154. Belt; 155. Limiting groove; 156. Micro servo motor; 157. Limiting block. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-6 A generator with an automatic cooling and lubrication system for sliding bearings, comprising a motor body 1 with a support plate 13, on which a front sliding bearing 2, a front oil pipe 3, a front bearing cooler 4, a front end cover 5, a stator 6, a rotor 7, a rear end cover 8, a rear sliding bearing 9, a rear oil pipe 10, a rear bearing cooler 11 are sequentially mounted, and a front sliding bearing 2 is mounted at the front end of the rotor 7, the front sliding bearing 2 comprises a first oil inlet 201 and a first oil outlet 202 which are arranged on the front sliding bearing 2, a first temperature sensor 203 is fixedly connected to the front sliding bearing 2, a front bearing cooler 4 is fixedly connected to the front end cover 5, the front bearing cooler 4 comprises an oil inlet and outlet 401 which is arranged on the front sliding bearing 2, a motor 404 is mounted on the motor body 1, a fan 403 is mounted at the top of the motor 404, a heat sink 402 is mounted at the top of the fan 403, and a front oil cooler 404 is mounted at the top of the motor 404. One end of the tube 3 is connected to the oil chamber in the front sliding bearing 2, and the other end is connected to the front bearing cooler 4. A rear sliding bearing 9 is installed at the rear end of the rotor 7. The rear sliding bearing 9 includes a second oil inlet 901 and a second oil outlet 902 opened on the rear sliding bearing 9. A second temperature sensor 903 is fixedly connected to the rear sliding bearing 9. A rear bearing cooler 11 with the same structure as the front bearing cooler 4 is installed on the rear end cover 8. One end of the rear oil pipe 10 is connected to the oil chamber in the rear sliding bearing 9, and the other end is connected to the rear bearing cooler 11. A box 12 is installed above the stator 6. A temperature control module 121 and a relay 122 are arranged in the box 12, and the temperature control module 121 is electrically connected to the first temperature sensor 203 and the second temperature sensor 903. The relay 122 is electrically connected to the front bearing cooler 4, the rear bearing cooler 11 and the motor 404.

[0030] By setting the front bearing cooler 4 and the rear sliding bearing 9, when the motor body 1 is running under heavy load, the first temperature sensor 203 and the second temperature sensor 903 on the front sliding bearing 2 and the rear sliding bearing 9 feed back the temperature of the cooling oil in the bearing inner cavity to the temperature control module 121, and the temperature control module 121 identifies the signals transmitted by the first temperature sensor 203 and the second temperature sensor 903, and determines whether the temperature of the bearing cooling oil is higher than 70°C. When the oil temperature is higher than 70°C, the temperature control module 121 sends a signal to the relay 122 inside the box 12, and the relay 122 is actuated at this time, so that the motor 404 on the front bearing cooler 4 and the rear bearing cooler 11 is energized, and the oil circuit is circulated and cooled to reduce the oil temperature. When the motor body 1 is running under light load, When the oil temperature is lower than 40°C, the temperature control module 121 sends a signal to the relay 122 inside the housing 12. The relay 122 is actuated to cut off the power to the motor 404 on the front bearing cooler 4 and the rear bearing cooler 11, and the sliding bearing is self-cooled instead. The above-mentioned method can effectively switch the working power of the cooler intelligently, switch the cooling mode of the sliding bearing, save energy consumption and save costs.

[0031] See also Figure 1 and Figure 7-8 The four corners of the bottom end of the support plate 13 are all equipped with sliding components 14. The sliding components 14 include a group of card slots 144 symmetrically opened at both ends of the support plate 13. A card block 143 is slidably connected in the card slot 144. A threaded shaft 145 is fixedly connected to the bottom end of the card block 143. A universal wheel 141 is fixedly connected to the bottom end of the threaded shaft 145. A threaded sleeve 142 is threadedly connected to the outer wall of the threaded shaft 145. The height of the threaded shaft 145 is greater than the height between the bottom wall of the threaded shaft 145 and the bottom wall of the universal wheel 141. A lifting component 15 is symmetrically installed on the support plate 13. The lifting component 15 includes A group of screw holes 151 are symmetrically opened on the top of the support plate 13, a screw 152 is installed in the screw hole 151, and the bottom end of the screw 152 is rotatably connected to a base in contact with the ground, a belt pulley 153 is sleeved on the outer wall of the top of each group of screws 152, and the two belt pulleys 153 are connected by a belt 154, a limiting groove 155 is opened on the top of the screw 152, a micro servo motor 156 is detachably connected in the limiting groove 155, the output end of the micro servo motor 156 is connected to a limiting block 157, and the limiting block 157 is snap-fitted to the limiting groove 155.

[0032] By setting the sliding assembly 14 and the lifting assembly 15, when the motor body 1 is moved, the micro servo motor 156 can be connected to the lead screw 152 through the clamping connection of the limit block 157 and the limit groove 155, and then the micro servo motor 156 is turned on to drive the lead screw 152, and the two driving lead screws 152 of the same group are driven to rotate synchronously through the belt pulley 153 and the belt 154, so that the support plate 13 drives the upper motor body 1 to move upward, and the support plate 13 is lifted off the ground. At this time, the clamping block 143 is slid from the side and clamped into the clamping groove 144. At this time, the threaded sleeve 142 is rotated to rotate it. Turn until the surface of the threaded shaft 145 contacts the bottom of the block 143, thereby exposing the universal wheel 141. The motor body 1 can be easily moved by rolling the universal wheel 141. After moving to a suitable position, the threaded sleeve 142 can be rotated in the reverse direction until it covers the outside of the universal wheel 141 and contacts the ground, thereby temporarily positioning it. When the positioning is determined, the block 143 can be taken out of the slot 144, and the micro servo motor 156 can be driven in the reverse direction to drive the lead screw 152 to rotate in the reverse direction, so that the support plate 13 drives the motor body 1 to fall to the ground for positioning, thereby effectively achieving the effect of easily moving the motor body 1.

[0033] The specific implementation process of the present invention is as follows: First, when the motor body 1 is running under heavy load, the first temperature sensor 203 and the second temperature sensor 903 on the front sliding bearing 2 and the rear sliding bearing 9 feed back the temperature of the cooling oil in the bearing inner cavity to the temperature control module 121, and the temperature control module 121 identifies the signals transmitted by the first temperature sensor 203 and the second temperature sensor 903 to determine whether the temperature of the bearing cooling oil is higher than 70°C. When the oil temperature is higher than 70°C, the temperature control module 121 sends a signal to the relay 122 inside the box 12, and the relay 122 is actuated at this time, so that the motor 404 on the front bearing cooler 4 and the rear bearing cooler 11 is energized, and the oil circuit is circulated and cooled to reduce the oil temperature. When the motor body 1 is running under light load, the first temperature sensor 203 and the second temperature sensor 903 on the front sliding bearing 2 and the rear sliding bearing 9 feed back the temperature of the cooling oil in the bearing inner cavity to the temperature control module 121, and the temperature control module 121 identifies the signals transmitted by the first temperature sensor 203 and the second temperature sensor 903 , determine whether the temperature of the bearing cooling oil is lower than 40°C. When the oil temperature is lower than 40°C, the temperature control module 121 sends a signal to the relay 122 inside the box 12, and the relay 122 is actuated to cut off the power to the motor 404 on the front bearing cooler 4 and the rear bearing cooler 11, and the sliding bearing is self-cooled. Secondly, the motor body 1 is moved, and the micro servo motor 156 can be connected to the lead screw 152 through the clamping of the limit block 157 and the limit groove 155, and then the micro servo motor 156 is turned on to drive The movable lead screw 152 is driven to rotate synchronously with the belt pulley 153 and the belt 154, so that the support plate 13 drives the motor body 1 above to move upward, and the support plate 13 is lifted off the ground. At this time, the block 143 is slid from the side into the slot 144. At this time, the threaded sleeve 142 is rotated to rotate it until the surface of the threaded shaft 145 contacts the bottom of the block 143, thereby exposing the universal wheel 141. The motor body 1 can be easily moved by rolling the universal wheel 141.

[0034] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A generator with an automatic cooling and lubrication system for sliding bearings, comprising a motor body (1) with a support plate (13), characterized in that: The motor body (1) is provided with a front sliding bearing (2), a front oil pipe (3), a front bearing cooler (4), a front end cover (5), a stator (6), a rotor (7), a rear end cover (8), a rear sliding bearing (9), a rear oil pipe (10), and a rear bearing cooler (11) in sequence. The front end of the rotor (7) is provided with a front sliding bearing (2), the front sliding bearing (2) comprising a first oil inlet (201) and a first oil outlet (202) provided on the front sliding bearing (2). A first temperature sensor (203) is fixedly connected to the bearing (2); a front bearing cooler (4) is fixedly connected to the front end cover (5); the front bearing cooler (4) includes an oil inlet and outlet (401) opened on the front sliding bearing (2); an electric motor (404) is installed on the motor body (1); a fan (403) is installed on the top of the electric motor (404); a heat sink (402) is installed on the top of the fan (403); one end of the front oil pipe (3) is connected to the front sliding bearing (2); The rear end of the rotor (7) is connected to the oil chamber inside the rotor (7), and the other end is connected to the front bearing cooler (4). A rear sliding bearing (9) is installed at the rear end of the rotor (7). The rear sliding bearing (9) includes a second oil inlet (901) and a second oil outlet (902) opened on the rear sliding bearing (9). A second temperature sensor (903) is fixedly connected to the rear sliding bearing (9). A rear bearing cooler (11) having the same structure as the front bearing cooler (4) is installed on the rear end cover (8). The rear oil pipe (10) is One end is connected to the oil chamber in the rear sliding bearing (9), and the other end is connected to the rear bearing cooler (11). A box (12) is installed above the stator (6). A temperature control module (121) and a relay (122) are arranged in the box (12). The temperature control module (121) is electrically connected to the first temperature sensor (203) and the second temperature sensor (903). The relay (122) is electrically connected to the front bearing cooler (4), the rear bearing cooler (11) and the motor (404).

2. A generator with an automatic cooling and lubrication system for sliding bearings according to claim 1, characterized in that: Sliding components (14) are installed at the four corners of the bottom end of the support plate (13). The sliding components (14) include a group of card slots (144) symmetrically arranged at the two ends of the support plate (13). A card block (143) is slidably connected in the card slot (144).

3. The generator with automatic cooling and lubrication system for sliding bearings according to claim 2, characterized in that: The bottom end of the clamping block (143) is fixedly connected to a threaded shaft (145), the bottom end of the threaded shaft (145) is fixedly connected to a universal wheel (141), and the outer wall of the threaded shaft (145) is threadedly connected to a threaded sleeve (142).

4. The generator with automatic cooling and lubrication system for sliding bearings according to claim 3, characterized in that: The height of the threaded shaft (145) is greater than the height between the bottom wall of the threaded shaft (145) and the bottom wall of the universal wheel (141).

5. The generator with automatic cooling and lubrication system for sliding bearings according to claim 1, characterized in that: A lifting assembly (15) is symmetrically mounted on the support plate (13). The lifting assembly (15) comprises a group of screw holes (151) symmetrically opened on the top of the support plate (13). A lead screw (152) is mounted in the screw hole (151), and the bottom end of the lead screw (152) is rotatably connected to a base in contact with the ground.

6. The generator with automatic cooling and lubrication system for sliding bearings according to claim 5, characterized in that: The top outer wall of each group of the lead screws (152) is sleeved with a belt pulley (153), and the two belt pulleys (153) are connected by a belt (154).

7. The generator with automatic cooling and lubrication system for sliding bearings according to claim 6, characterized in that: A limiting groove (155) is provided at the top end of the lead screw (152), a micro servo motor (156) is detachably connected in the limiting groove (155), an output end of the micro servo motor (156) is connected to a limiting block (157), and the limiting block (157) is snap-fitted to the limiting groove (155).

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