Closed gearbox with water turbine power generation compression type cooling system

Abstract

The invention discloses a closed gearbox with a water turbine power generation compression type cooling system. The closed gearbox comprises a shell, a driving motor, a rotating cylinder, a power generation mechanism and a cooling mechanism. The shell is provided with a driving motor and a rotating barrel capable of rotating; the driving motor is used for driving the rotating cylinder to rotate; a gear box body is arranged in the rotating cylinder body, and a lubricating oil flow channel is arranged in the gear box body; the power generation mechanism generates power through lubricating oil in the lubricating oil flow channel and is used for supplying power to the cooling mechanism. The cooling mechanism is used for cooling the gear box body; compared with a cooling water pipe, the cooling water pipe has the advantages that the installation mode is simple, the machining difficulty is reduced, the maintenance efficiency is improved, and the cooling speed of the reduction gearbox is also considered.

Description

Technical Field

[0001] The invention relates to the technical field of gear boxes, and in particular to a closed gear box with a water turbine power generation compression cooling system. Background Art

[0002] With the advancement of technology and changes in industry needs, the application prospects of tunnel boring machines are broad, and tunnel boring machines play an important role in underground projects (such as tunnel construction, mining, etc.). However, the problem of gearbox heating has become a challenge. In traditional cooling, cooling water pipes are usually used for cooling, and this cooling method has some problems. First, the design and installation of the cooling water pipe system in the closed rotating gearbox of the tunnel boring machine is relatively complicated, and the cooling water pipes will be entangled, requiring professional technicians to operate, which increases the difficulty of construction and maintenance; second, the use of cooling water pipes or processing pipelines will cause a certain degree of damage to secondary mechanisms such as rollers, increase the difficulty of processing, and even cause failures.

[0003] Compression refrigeration technology is another widely used refrigeration method, which mainly achieves cooling by compressing and circulating the refrigerant. This technology plays an important role in fields such as air conditioning, refrigerators and industrial cooling. It has high refrigeration efficiency and can effectively convert electrical energy into cooling capacity. It is easy to maintain. Compared with other refrigeration technologies, the maintenance of compression refrigeration systems is relatively simple. However, its energy consumption is high. In high temperature environments, the compressor requires more power to operate, which makes this technology difficult to apply to the closed rotating gearbox of the tunnel boring machine.

[0004] In summary, in the closed work of tunneling, there is a lack of cooling methods for the enclosed gearbox of the rotating drum. It is difficult to directly connect the reduction box in the rotating drum to the water pipe or external wires, which will cause entanglement and difficult maintenance. The closed design makes the inspection and replacement of internal components complicated, increasing maintenance costs and time. Some existing technologies use complex cut-out cooling circuits, which increases the processing difficulty and failure rate of the system. Therefore, there is a need for an effective cooling method for the enclosed rotating reduction box. Summary of the invention

[0005] The object of the present invention is to provide a closed gearbox with a hydraulic turbine power generation compression cooling system to provide an effective cooling method for a closed rotary reduction gearbox.

[0006] In order to solve the above technical problems, the present invention provides a closed gearbox with a water turbine power generation compression cooling system, including a shell, a drive motor, a rotating cylinder, a power generation mechanism and a cooling mechanism; the shell is provided with the drive motor and the rotating cylinder that can rotate; the drive motor is used to drive the rotating cylinder to rotate; a gear box is provided in the rotating cylinder, the gear box and the rotating cylinder are connected to form a coaxial rotation structure, and a lubricating oil flow channel is provided in the gear box, and the lubricating oil flow channel is used to input lubricating oil flow; the power generation mechanism includes a water turbine, a generator rotor and a generator stator; the water turbine is provided at In the lubricating oil flow channel, the turbine is connected to the generator rotor as a synchronous rotation structure; the generator rotor is rotatably arranged in the generator stator; the generator stator is fixedly connected to the outside of the gear box body in the form of a coaxial rotation structure; the power generation mechanism is used to supply power to the cooling mechanism; the cooling mechanism includes a compressor, a conversion unit and an evaporation tube connected in sequence as a circulation loop; the compressor is used to generate refrigerant high-pressure gas to the conversion unit; the conversion unit is used to generate low-temperature and low-pressure liquid refrigerant to the evaporation tube; the evaporation tube surrounds the outside of the gear box body.

[0007] In one of the embodiments, the gear housing is connected and fixed to the rotating cylinder, and the gear cavity inside the gear housing is provided with a sun gear, a plurality of planetary gears meshing on the outside of the circumference of the sun gear, and a ring gear meshing with the outer sides of the plurality of planetary gears, and the ring gear is connected and fixed to the gear housing; the drive motor is connected to the sun gear as a coaxial rotation structure.

[0008] In one embodiment, the gear housing is provided with a lubricating oil input port and a lubricating oil output port, both of which are connected to the interior of the gear cavity, and the interior of the gear cavity is also connected to the input port and the output port of the lubricating oil flow channel.

[0009] In one embodiment, the driving motor is a dual-shaft generator, the gear box is provided on two opposite sides of the driving motor, and the two ends of the generator rotor are respectively connected to the turbines in the two gear boxes to form a coaxial rotation structure.

[0010] In one embodiment, the power generation mechanism further includes a battery, and the power generation mechanism is electrically connected to the cooling mechanism through the battery, and the battery is used to store the electrical energy generated by the power generation mechanism to power the cooling mechanism.

[0011] In one of the embodiments, an insulating fixing sleeve is connected between the generator stator and the gear box.

[0012] In one of the embodiments, the conversion unit includes a condenser and a capillary tube, and the compressor, the condenser, the capillary tube and the evaporation tube are sequentially connected to form a circulation loop.

[0013] In one embodiment, a filter is connected between the condenser and the capillary tube.

[0014] In one of the embodiments, a fan is provided on the housing, and the fan is used to dissipate heat from the condenser.

[0015] In one of the embodiments, the outer peripheral wall of the rotating cylinder is provided with a plurality of pick seats which are separated from each other, and pick teeth are provided on the plurality of pick seats.

[0016] The beneficial effects of the present invention are as follows:

[0017] When the closed gearbox is working, lubricating oil is input to ensure its smooth operation. This invention also uses lubricating oil to drive the turbine, which drives the generator rotor to rotate, and fixes the generator stator on the gearbox so that the generator rotor and the generator stator produce relative movement to generate electricity; then the generator generates electricity to power the compressor for cooling. Compared with the cooling water pipe, this installation method is simple, which not only reduces the processing difficulty, improves the maintenance efficiency, but also takes into account the cooling speed of the reduction box. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram provided by an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 Schematic diagram after removing the external structures such as the shell and rotating cylinder;

[0021] Figure 3 yes Figure 2 Schematic diagram of the local structure;

[0022] Figure 4 yes Figure 3 A schematic cross-sectional view of the mechanism;

[0023] Figure 5 yes Figure 4 Schematic diagram of the assembly structure of the sun gear, planetary gears and ring gear.

[0024] The reference numerals are as follows:

[0025] 10. Housing; 11. Fan;

[0026] 20. Driving motor;

[0027] 30. Rotating cylinder; 31. Pick seat; 32. Pick teeth;

[0028] 40. Power generation mechanism; 41. Water turbine; 42. Generator rotor; 43. Generator stator; 44. Insulation fixing sleeve; 44. Battery;

[0029] 50. Cooling mechanism; 51. Compressor; 52. Converting unit; 521. Condenser; 522. Capillary tube; 523. Filter; 53. Evaporation tube;

[0030] 60. Gear box; 61. Lubricating oil flow channel; 62. Gear cavity; 63. Sun gear; 64. Planetary gear; 65. Ring gear; 66. Lubricating oil inlet; 67. Lubricating oil outlet. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0032] The present invention provides a closed gear box 60 with a turbine power generation compression cooling system, and its implementation example Figures 1 to 5 As shown, it includes a housing 10, a driving motor 20, a rotating cylinder 30, a power generation mechanism 40 and a cooling mechanism 50; the housing 10 is provided with a driving motor 20 and a rotating cylinder 30 that can rotate; the driving motor 20 is used to drive the rotating cylinder 30 to rotate; a gear box 60 is provided in the rotating cylinder 30, and the gear box 60 is connected with the rotating cylinder 30 to form a coaxial rotation structure, and a lubricating oil flow channel 61 is provided in the gear box 60, and the lubricating oil flow channel 61 is used to input the lubricating oil flow; the power generation mechanism 40 includes a turbine 41, a generator rotor 42 and a generator stator 43; the turbine 41 is provided in the lubricating oil flow channel 61, and the turbine 41 is connected with the generator rotor 42 The gear box 60 is connected as a synchronous rotation structure, and the turbine 41 of this embodiment is set as a lift turbine; the generator rotor 42 is rotatably arranged in the generator stator 43; the generator stator 43 is fixedly connected to the outside of the gear box 60 in the form of a coaxial rotation structure; the power generation mechanism 40 is used to supply power to the cooling mechanism 50; the cooling mechanism 50 includes a compressor 51, a conversion unit 52 and an evaporation pipe 53 which are connected in sequence as a circulation loop; the compressor 51 is used to generate refrigerant high-pressure gas to the conversion unit 52; the conversion unit 52 is used to generate low-temperature and low-pressure liquid refrigerant to the evaporation pipe 53; the evaporation pipe 53 surrounds the outside of the gear box 60.

[0033] When in use, lubricating oil can be input into the lubricating oil flow channel 61 from the outside, and the flow of lubricating oil can drive the water turbine 41 to rotate, and the rotation of the water turbine 41 will drive the generator rotor 42 to rotate. At this time, the driving motor 20 will drive the rotating cylinder 30 to rotate, and the rotation of the rotating cylinder 30 will drive the gear box 60 and the generator stator 43 to rotate synchronously, so that the generator rotor 42 and the generator stator 43 form a reverse relative rotation to generate electrical energy. Finally, the generated electrical energy can provide stable power supply for the compressor 51, so that the compressor 51 can absorb the refrigerant low-pressure gas and convert it into refrigerant high-pressure gas and send it to the conversion unit 52, and then the conversion unit 52 converts the refrigerant high-pressure gas into liquid refrigerant and sends it to the evaporation pipe 53; at this time, the liquid refrigerant will absorb heat from the gear box 60 and the rotating cylinder 30, so that the liquid refrigerant evaporates into refrigerant low-pressure gas, completing the refrigeration process, and the refrigerant low-pressure gas will return to the compressor 51 again for the next recycling.

[0034] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, in this embodiment, a gear box 60 is connected and fixed to the rotating cylinder 30, and a gear cavity 62 inside the gear box 60 is provided with a sun gear 63, a plurality of planetary gears 64 meshing on the outside of the circumference of the sun gear 63, and a ring gear 65 meshing on the outside of the plurality of planetary gears 64, and the ring gear 65 is connected and fixed to the gear box 60; the drive motor 20 is connected to the sun gear 63 as a coaxial rotation structure.

[0035] After adopting this setting method, the gear box body 60 can be connected and fixed to the rotating cylinder body 30 by screws and bolts, so once the driving motor 20 is working, it will drive the sun gear 63 to rotate, and the rotation of the sun gear 63 will drive the multiple planetary gears 64 to rotate synchronously, and the rotation of the multiple planetary gears 64 will drive the ring gear 65 to rotate; because the ring gear 65 is connected and fixed to the gear box body 60, the rotation of the ring gear 65 will drive the gear box body 60 and the rotating cylinder body 30 to rotate synchronously.

[0036] like Figure 1 As shown, in this embodiment, the outer peripheral wall of the rotating cylinder 30 is provided with a plurality of pick seats 31 which are separated from each other, and each of the plurality of pick seats 31 is provided with a pick teeth 32 .

[0037] After adopting this arrangement, once the rotating cylinder 30 rotates, the rotating cylinder 30 will drive the pick seat 31 and the pick teeth 32 to rotate together, thereby realizing the excavation work.

[0038] like Figure 3 and Figure 4As shown, in this embodiment, a lubricating oil inlet 66 and a lubricating oil outlet 67 are provided on the gear box body 60, and the lubricating oil inlet 66 and the lubricating oil outlet 67 are both connected to the interior of the gear cavity 62, and the interior of the gear cavity 62 is also connected to the inlet and outlet of the lubricating oil flow channel 61.

[0039] After adopting this setting, the lubricating oil can not only enter the gear cavity 62 through the lubricating oil inlet 66 to lubricate each gear in the gear cavity 62, but the lubricating oil can also further flow into the lubricating oil flow channel 61 for circulation, thereby providing working power for the turbine 41, thereby achieving the purpose of power generation by the power generation mechanism 40.

[0040] like Figures 2 to 4 As shown, in this embodiment, the drive motor 20 is configured as a dual-shaft generator, and gear boxes 60 are provided on opposite sides of the drive motor 20. Both ends of the generator rotor 42 are respectively connected to the turbines 41 in the two gear boxes 60 to form a coaxial rotation structure.

[0041] After adopting this setting, once entering the working state, lubricating oil will be input into the two gear boxes 60 to drive the turbines 41 to work, so the two turbines 41 will be able to jointly drive the dual-shaft generator to generate electricity, so as to provide a more stable power supply for the compressor 51.

[0042] like Figure 3 As shown, in this embodiment, an insulating fixing sleeve 44 is connected between the generator stator 43 and the gear box body 60 .

[0043] After adopting this setting method, the insulation setting between the generator stator 43 and the gear box 60 can be ensured, which can not only avoid affecting the normal operation of the power generation mechanism 40, but also realize the stable installation of the generator stator 43.

[0044] like Figure 3 As shown, in this embodiment, the conversion unit 52 includes a condenser 521 and a capillary tube 522, and the compressor 51, the condenser 521, the capillary tube 522 and the evaporation tube 53 are sequentially connected to form a circulation loop.

[0045] After adopting this setting method, when the compressor 51 absorbs the low-pressure refrigerant gas and converts it into high-pressure refrigerant gas and sends it to the conversion unit 52, the high-pressure refrigerant gas will be sent to the condenser 521 first, so that the condenser 521 can exchange heat with the external environment, release heat, and condense the high-pressure refrigerant gas into liquid; then the liquid refrigerant will be sent to the capillary 522, and the capillary 522 will reduce the pressure and temperature of the liquid refrigerant, so that the liquid refrigerant becomes a low-pressure and low-temperature state; finally, the low-temperature and low-pressure liquid refrigerant is sent to the evaporator 53, and the liquid refrigerant will absorb heat from the gear box 60 and the inside of the rotating cylinder 30, so that the liquid refrigerant evaporates into a gas state, completing the refrigeration process, and the low-pressure refrigerant gas will return to the compressor 51 again for the next cycle.

[0046] like Figure 3 As shown, in this embodiment, a filter 523 is connected between the condenser 521 and the capillary tube 522 .

[0047] After adopting this configuration, the liquid refrigerant can use the filter 523 to filter impurities to ensure that the cooling mechanism 50 can always be in a stable working state.

[0048] like Figures 1 to 3 As shown, in this embodiment, a fan 11 is provided on the housing 10 , and the fan 11 is used to dissipate heat from the condenser 521 .

[0049] After adopting this configuration, the fan 11 can accelerate the heat exchange efficiency of the condenser 521, thereby improving the refrigeration efficiency of the refrigeration mechanism.

[0050] like Figures 2 to 3 As shown, the power generation mechanism 40 further includes a battery 44 . The power generation mechanism 40 is electrically connected to the cooling mechanism 50 via the battery 44 . The battery 44 is used to store the electric energy generated by the power generation mechanism 40 to supply power to the cooling mechanism 50 .

[0051] After adopting this setting, even if the generator rotor 42 and the generator stator 43 have unstable rotation speed, the generated electric energy will be first stored in the battery 44, and then the battery 44 will provide stable electric energy to the cooling mechanism 50, thereby ensuring the working stability of the cooling mechanism 50.

[0052] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A closed gearbox with a compression cooling system for turbine power generation, characterized in that: It includes a housing, a driving motor, a rotating cylinder, a power generation mechanism and a cooling mechanism; The housing is provided with the driving motor and the rotating cylinder capable of rotating on its own; The driving motor is used to drive the rotating cylinder to rotate; A gear box is disposed in the rotating cylinder, the gear box is connected to the rotating cylinder as a coaxial rotating structure, and a lubricating oil flow channel is disposed in the gear box, the lubricating oil flow channel is used to input lubricating oil for flow; The power generation mechanism comprises a water turbine, a generator rotor and a generator stator; the water turbine is arranged in the lubricating oil flow channel, and the water turbine and the generator rotor are connected to form a synchronous rotation structure; the generator rotor is rotatably arranged in the generator stator; the generator stator is fixedly connected to the outside of the gear box in the form of a coaxial rotation structure; the power generation mechanism is used to supply power to the cooling mechanism; The cooling mechanism includes a compressor, a conversion unit and an evaporation tube which are sequentially connected to form a circulation loop; the compressor is used to generate high-pressure refrigerant gas to the conversion unit; the conversion unit is used to generate low-temperature and low-pressure liquid refrigerant to the evaporation tube; the evaporation tube surrounds the outside of the gear box body.

2. The closed gearbox according to claim 1, characterized in that: The gear box is connected and fixed to the rotating cylinder, and the gear cavity inside the gear box is provided with a sun gear, a plurality of planetary gears meshing with the outer side of the sun gear, and a ring gear meshing with the outer sides of the plurality of planetary gears, and the ring gear is connected and fixed to the gear box; The driving motor is connected to the sun gear in a coaxial rotation structure.

3. The closed gearbox according to claim 2, characterized in that: The gear box body is provided with a lubricating oil input port and a lubricating oil output port, and the lubricating oil input port and the lubricating oil output port are both connected to the inside of the gear cavity, and the inside of the gear cavity is also connected to the input port and the output port of the lubricating oil flow channel.

4. The enclosed gearbox according to claim 1, characterized in that: The driving motor is a double-shaft generator. The gear boxes are disposed on opposite sides of the driving motor. The two ends of the generator rotor are respectively connected to the turbines in the two gear boxes to form a coaxial rotation structure.

5. The enclosed gearbox according to claim 1, characterized in that: The power generation mechanism further includes a storage battery, through which the power generation mechanism is electrically connected to the cooling mechanism, and the storage battery is used to store the electric energy generated by the power generation mechanism to supply power to the cooling mechanism.

6. The enclosed gearbox according to claim 1, characterized in that: An insulating fixing sleeve is connected between the generator stator and the gear box.

7. The enclosed gearbox according to claim 1, characterized in that: The conversion unit comprises a condenser and a capillary tube, and the compressor, the condenser, the capillary tube and the evaporation tube are sequentially connected to form a circulation loop.

8. The enclosed gearbox according to claim 7, characterized in that A filter is connected between the condenser and the capillary tube.

9. The enclosed gearbox according to claim 7, characterized in that: The housing is provided with a fan, and the fan is used to dissipate heat from the condenser.

10. The enclosed gearbox according to claim 1, characterized in that The outer peripheral wall of the rotating cylinder is provided with a plurality of pick seats which are arranged separately from each other, and pick teeth are provided on the plurality of pick seats.

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