Efficient and energy-saving hydraulic generator

Abstract

The invention discloses an efficient and energy-saving hydro-generator, and belongs to the technical field of hydro-generators. Comprising a generator and a variable-speed transmission mechanism, the generator comprises a first shell and a second shell, the second shell is installed on the bottom face of the first shell, the interior of the first shell communicates with the interior of the second shell, the interior of the first shell is rotationally connected with a main shaft, and the interior of the second shell is in transmission connection with an input shaft; the transmission shaft is rotationally installed in the first shell and the second shell, a first connecting ring is installed on the outer side of the transmission shaft, a second connecting ring is installed on the outer side of the input shaft, four sets of electric telescopic rods are installed on the outer side of each of the first connecting ring and the second connecting ring, and connecting blocks are installed at the telescopic ends of the electric telescopic rods and provided with grooves. The variable-speed transmission mechanism further comprises a synchronous belt, the synchronous belt is installed on the outer side of the synchronous wheel, and the transmission shaft is in transmission connection with the main shaft.

Description

Technical Field

[0001] The invention relates to the technical field of water turbine generators, in particular to a high-efficiency and energy-saving water turbine generator. Background Art

[0002] A hydroelectric generator is a generator that uses a turbine as the prime mover to convert water energy into electrical energy. When water flows through the turbine, it converts water energy into mechanical energy. The turbine shaft drives the rotor of the generator, converting mechanical energy into electrical energy for output. It is the main power equipment for hydropower stations to produce electricity.

[0003] Existing hydro-turbine generators need to be equipped with accelerators to increase the speed of the turbine input to the hydro-turbine generator. However, the accelerators currently equipped with hydro-turbine generators are located outside the hydro-turbine generators, which increases the space occupied by the power generation system. At the same time, the speed ratio of the accelerators currently equipped with hydro-turbine generators is fixed, so the speed of the generator cannot be adjusted according to changes in water flow velocity or other input power, resulting in the hydro-turbine generator being unable to always operate near the optimal efficiency point, thereby affecting the performance of the hydro-turbine generator. Summary of the invention

[0004] The purpose of the present invention is to provide a high-efficiency and energy-saving hydro-generator to solve the problems raised in the above background technology.

[0005] In view of the above problems, the technical solution proposed by the present invention is: A high-efficiency and energy-saving hydro-turbine generator comprises a generator and a speed-changing transmission mechanism, wherein the generator comprises a first shell and a second shell, wherein the second shell is mounted on the bottom surface of the first shell, and the first shell and the second shell are internally connected, the first shell is internally rotatably connected with a main shaft, and the second shell is internally transmission-connected with an input shaft, wherein the speed-changing transmission mechanism comprises a transmission shaft, wherein the transmission shaft is rotatably mounted inside the first shell and the second shell, a first connecting ring is mounted on the outer side of the transmission shaft, a second connecting ring is mounted on the outer side of the input shaft, four groups of electric telescopic rods are mounted on the outer sides of the first connecting ring and the second connecting ring, and the telescopic ends of the electric telescopic rods are both mounted with connecting blocks, wherein the connecting blocks have grooves, and a synchronous wheel is rotatably connected in the groove, wherein the speed-changing transmission mechanism further comprises a synchronous belt, wherein the synchronous belt is mounted on the outer side of the synchronous wheel, and the transmission shaft is transmission-connected with the main shaft.

[0006] As a preferred technical solution of the present invention, the top end of the main shaft is located outside the first housing, and the bottom end of the input shaft is located outside the second housing.

[0007] Specifically, when the electric telescopic rod on the first connecting ring is extended to its longest position and the electric telescopic rod on the second connecting ring is shortened to its shortest position, the diameter of the first connecting ring plus the length of the electric telescopic rod thereon at this moment is still smaller than the diameter of the second connecting ring plus the length of the electric telescopic rod thereon at this moment, so that no matter what the situation is, the rotation speed of the transmission shaft is greater than the rotation speed of the input shaft. A photoelectric rotation speed sensor is installed on the top of the main shaft to monitor the rotation speed of the main shaft at all times. At the same time, the power of the generator is monitored by the instrument, and a mathematical model is established to describe the relationship between the output power, efficiency and rotation speed of the generator. By solving the model, the rotation speed value corresponding to the optimal efficiency point is obtained, and the speed change transmission mechanism is used to ensure that the generator can always operate near the optimal efficiency point.

[0008] Specifically, the electric telescopic rod on the first connecting ring is controlled by a control system, and the electric telescopic rod on the second connecting ring is controlled by another control system. The two systems jointly control the electric telescopic rod on the first connecting ring and the electric telescopic rod on the second connecting ring to ensure that after the electric telescopic rod on the second connecting ring is extended by a specific distance, the electric telescopic rod on the first connecting ring can be shortened by a specific distance, so that the synchronous belt can always be in a taut state.

[0009] As a preferred technical solution of the present invention, a driving gear is installed on the outer side of the transmission shaft, a driven gear is installed on the outer side of the main shaft, the driving gear and the driven gear are meshed and connected, and the driving gear is larger than the radius of the driven gear.

[0010] The beneficial effect of adopting the above further solution is that the driving gear and the driven gear are used to enable the transmission shaft to drive the main shaft to rotate, and at the same time, the rotation speed of the main shaft can be increased by limiting the sizes of the driving gear and the driven gear.

[0011] As a preferred technical solution of the present invention, a first main fixing frame is installed inside the first housing, a first sub-fixing frame is installed at the angle of the first main fixing frame, a first thrust bearing and a second thrust bearing are respectively installed at the centers of the first main fixing frame and the first sub-fixing frame, a second main fixing frame is installed inside the second housing, a second sub-fixing frame is installed at the angle of the second main fixing frame, a third thrust bearing and a fourth thrust bearing are respectively installed at the centers of the second main fixing frame and the second sub-fixing frame, the main shaft is installed on the inner ring of the first thrust bearing, the input shaft is installed on the inner ring of the third thrust bearing, and the transmission shaft is installed on the inner rings of the second thrust bearing and the fourth thrust bearing.

[0012] As a preferred technical solution of the present invention, a rotor is installed on the outside of the main shaft, a stator is installed inside the first shell, a plurality of excitation windings are installed at equal distances on the outside of the rotor, a plurality of tooth slots are distributed at equal distances on the inner ring of the stator, and three-phase windings are wound between the plurality of tooth slots.

[0013] Specifically, the first shell has a wire slot, and the end of the three-phase winding extends through the wire slot to the outside of the first shell. When direct current is passed through the excitation winding of the rotor, a magnetic field is generated around the rotor, and the main shaft is driven to rotate by the turbine, thereby driving the rotor to rotate. Relative motion is generated between the rotor magnetic field and the three-phase winding of the stator. The relative motion between the rotor magnetic field and the stator three-phase winding causes an electromotive force to be induced in the stator three-phase winding. The induced electromotive force forms a current in the stator three-phase winding. When the stator three-phase winding is connected to an external load, the current will flow through the load, thereby providing electrical energy to the load.

[0014] Specifically, a collector ring is installed on the outside of the main shaft, and brushes are installed on the stator through a brush holder. The brushes are in close contact with the surface of the collector ring. At the same time, the brushes are also close to the access point of the excitation system. The DC excitation current generated by the excitation system is transmitted to the brushes through cables or busbars. The brushes are in close contact with the collector rings under the pressure of the springs, and the excitation current is conducted to the collector rings. The collector rings rotate with the rotor and transmit the excitation current to the three-phase winding of the rotor, thereby establishing a magnetic field around the rotor.

[0015] As a preferred technical solution of the present invention, a shielding plate is installed at the internal connection between the first shell and the second shell.

[0016] Specifically, a pair of openings are reserved at the center of the shielding plate for the main shaft and the transmission shaft to pass through, the speed change transmission mechanism is located below the shielding plate, and the rotor and the stator are located above the shielding plate.

[0017] The beneficial effect of adopting the above further solution is that the speed change transmission mechanism is separated from the rotor and the stator by the shielding plate to prevent the speed change transmission mechanism from affecting the magnetic field on the rotor.

[0018] As a preferred technical solution of the present invention, a plurality of heat dissipation slots are provided on the outer side of the first housing.

[0019] Specifically, the external heat dissipation mechanism is installed on the outside of the first shell and close to the heat dissipation groove. When the heat dissipation mechanism is working, it can complete the exchange of air in the first shell and the second shell with the external air, thereby dissipating the heat of the generator and the speed transmission mechanism.

[0020] In another aspect, the present invention provides a method for using a high-efficiency and energy-saving hydro-turbine generator, comprising the following steps: Step 1: Install the device underground, connect the input shaft to the underwater turbine, connect the three-phase winding to the external load, and connect the device to the power monitoring instrument. Finally, install a photoelectric speed sensor on the main shaft. The electric telescopic rod on the first connecting ring is controlled by one control system, and the electric telescopic rod on the second connecting ring is controlled by another control system. Step 2: DC power is applied to the excitation system. The DC excitation current generated by the excitation system is transmitted to the brushes through cables or busbars. The brushes are in close contact with the slip rings under the pressure of the springs, and the excitation current is transmitted to the slip rings. The slip rings rotate with the rotor and transmit the excitation current to the three-phase windings of the rotor, thereby establishing a magnetic field around the rotor. Step 3: When the water flow acts on the turbine, the turbine can drive the input shaft to rotate through the output shaft, thereby driving the rotor to rotate. A relative motion is generated between the rotor magnetic field and the three-phase winding of the stator. The relative motion between the rotor magnetic field and the three-phase winding of the stator induces an electromotive force in the three-phase winding of the stator. The induced electromotive force will form a current in the three-phase winding of the stator. When the three-phase winding of the stator is connected to an external load, the current will flow through the load, thereby providing electrical energy to the load. Step 4: Use instruments to monitor the power of the generator and establish a mathematical model to describe the relationship between the output power, efficiency and speed of the generator. By solving the model, the speed value corresponding to the optimal efficiency point is obtained. The control system is used to control the length of the electric telescopic rod on the first connecting ring and the electric telescopic rod on the second connecting ring to control the speed of the main shaft so that the generator can always operate near the optimal efficiency point.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: the input shaft of the high-efficiency and energy-saving hydro-turbine generator and the output shaft of the turbine are connected by a coupling, so that when water flows onto the turbine, the turbine can drive the input shaft to rotate through the output shaft, and by using a synchronous wheel and a synchronous belt, the input shaft can drive the transmission shaft to rotate, and then drive the main shaft to rotate, so that the generator generates electricity, and when the electric telescopic rod installed on the first connecting ring is gradually shortened and the electric telescopic rod installed on the second connecting ring is gradually extended, the speed ratio of the transmission shaft and the input shaft can be gradually increased, and when the electric telescopic rod installed on the first connecting ring is gradually extended and the electric telescopic rod installed on the second connecting ring is gradually shortened, the speed ratio of the transmission shaft and the input shaft can be gradually reduced, so that the device can adjust the speed of the generator according to the change of the water flow speed or other input power, so as to achieve the purpose that the generator can always work near the optimal efficiency point, and the generator and the variable speed transmission mechanism are integrated together, so as to reduce the volume and floor space of the entire power generation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1A schematic diagram of the three-dimensional structure of a high-efficiency and energy-saving hydro-turbine generator disclosed in an embodiment of the present invention; Figure 2 A schematic diagram of the explosion structure of the high-efficiency and energy-saving hydro-generator disclosed in an embodiment of the present invention; Figure 3 for Figure 2 Schematic diagram of the enlarged structure of structure A in the middle.

[0023] In the figure: 100, generator; 1001, first housing; 1002, second housing; 1003, heat sink; 1004, input shaft; 1005, stator; 1006, tooth slot; 1007, rotor; 1008, excitation winding; 1009, first main fixed frame; 1010, first sub-fixed frame; 1011, main shaft; 1012, second main fixed frame; 1013, second sub-fixed frame; 200, speed change transmission mechanism; 2001, transmission shaft; 2002, driving gear; 2003, driven gear; 2004, first connecting ring; 2005, second connecting ring; 2006, electric telescopic rod; 2007, connecting block; 2008, synchronous wheel; 2009, synchronous belt. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1 - Figure 3The present invention provides a technical solution: a high-efficiency and energy-saving hydro-turbine generator, comprising a generator 100 and a speed-changing transmission mechanism 200, wherein the generator 100 comprises a first housing 1001 and a second housing 1002, wherein the second housing 1002 is mounted on the bottom surface of the first housing 1001, and the interiors of the first housing 1001 and the second housing 1002 are connected, wherein the interior of the first housing 1001 is rotatably connected to a main shaft 1011, and the interior of the second housing 1002 is transmission-connected to an input shaft 1004, and the speed-changing transmission mechanism 200 comprises a transmission shaft 2001, wherein the transmission shaft 2001 is rotatably mounted on the first housing 1001 and the second housing 1002. Inside the housing 1002, a first connecting ring 2004 is installed on the outer side of the transmission shaft 2001, and a second connecting ring 2005 is installed on the outer side of the input shaft 1004. Four sets of electric telescopic rods 2006 are installed on the outer sides of the first connecting ring 2004 and the second connecting ring 2005. The telescopic ends of the electric telescopic rods 2006 are installed with connecting blocks 2007. The connecting blocks 2007 have grooves, and a synchronous wheel 2008 is rotatably connected in the groove. The speed change transmission mechanism 200 also includes a synchronous belt 2009, which is installed on the outer side of the synchronous wheel 2008. The transmission shaft 2001 is connected to the main shaft 1011 in transmission.

[0026] In one embodiment of the present invention, further, the top end of the main shaft 1011 is located outside the first housing 1001, and the bottom end of the input shaft 1004 is located outside the second housing 1002. When the electric telescopic rod 2006 on the first connecting ring 2004 is raised to its longest position and the electric telescopic rod 2006 on the second connecting ring 2005 is shortened to its shortest position, the diameter of the first connecting ring 2004 plus the length of the electric telescopic rod 2006 thereon at this moment is still smaller than the diameter of the second connecting ring 2005 plus the length of the electric telescopic rod 2006 thereon at this moment, so that no matter what the situation is, the rotation speed of the transmission shaft 2001 is greater than the rotation speed of the input shaft 1004. A photoelectric rotation speed sensor is installed on the top of the main shaft 1011 to monitor the rotation speed of the main shaft 1011 at all times. At the same time, the power of the generator 100 is monitored by the instrument, and at the same time, a power sensor is established. A mathematical model is used to describe the relationship between the output power, efficiency and rotational speed of the generator 100. By solving the model, the rotational speed value corresponding to the optimal efficiency point is obtained, and the variable speed transmission mechanism 200 is used to ensure that the generator 100 can always operate near the optimal efficiency point. The electric telescopic rod 2006 on the first connecting ring 2004 is controlled by a control system, and the electric telescopic rod 2006 on the second connecting ring 2005 is controlled by another control system. The two systems control the electric telescopic rod 2006 on the first connecting ring 2004 and the electric telescopic rod 2006 on the second connecting ring 2005 in a linked manner to ensure that after the electric telescopic rod 2006 on the second connecting ring 2005 is extended by a specific distance, the electric telescopic rod 2006 on the first connecting ring 2004 can be shortened by a specific distance, so that the synchronous belt 2009 can always be in a taut state.

[0027] In one embodiment of the present invention, further, a driving gear 2002 is installed on the outer side of the transmission shaft 2001, and a driven gear 2003 is installed on the outer side of the main shaft 1011. The driving gear 2002 and the driven gear 2003 are meshingly connected, and the driving gear 2002 is larger than the radius of the driven gear 2003. The driving gear 2002 and the driven gear 2003 are utilized to make the transmission shaft 2001 drive the main shaft 1011 to rotate. At the same time, by limiting the sizes of the driving gear 2002 and the driven gear 2003, the rotation speed of the main shaft 1011 can be increased.

[0028] An embodiment of the present invention is further implemented, wherein a first main fixing frame 1009 is installed inside the first housing 1001, a first sub-fixing frame 1010 is installed at an angle of the first main fixing frame 1009, a first thrust bearing and a second thrust bearing are installed at the centers of the first main fixing frame 1009 and the first sub-fixing frame 1010, respectively, a second main fixing frame 1012 is installed inside the second housing 1002, a second sub-fixing frame 1013 is installed at an angle of the second main fixing frame 1012, a third thrust bearing and a fourth thrust bearing are installed at the centers of the second main fixing frame 1012 and the second sub-fixing frame 1013, a main shaft 1011 is installed on the inner ring of the first thrust bearing, an input shaft 1004 is installed on the inner ring of the third thrust bearing, and a transmission shaft 2001 is installed on the inner rings of the second thrust bearing and the fourth thrust bearing.

[0029] In one embodiment of the present invention, further, a rotor 1007 is installed on the outside of a main shaft 1011, a stator 1005 is installed inside a first housing 1001, a plurality of excitation windings 1008 are installed at equal distances on the outside of the rotor 1007, a plurality of tooth slots 1006 are distributed at equal distances on the inner ring of the stator 1005, a three-phase winding is wound between the plurality of tooth slots 1006, the first housing 1001 has wire slots, and the ends of the three-phase windings extend through the wire slots to the outside of the first housing 1001, when direct current is passed through the excitation winding of the rotor 1007, a magnetic field is generated around the rotor, the main shaft 1011 is driven to rotate by a water turbine, thereby driving the rotor 1007 to rotate, and a relative motion is generated between the magnetic field of the rotor 1007 and the three-phase winding of the stator 1005, and the magnetic field of the rotor 1007 and the three-phase winding of the stator 1005 are in contact with each other. The relative movement of the phase windings induces an electromotive force in the three-phase windings of the stator 1005, and the induced electromotive force forms a current in the three-phase windings of the stator 1005. When the three-phase windings of the stator 1005 are connected to an external load, the current will flow through the load, thereby providing electrical energy to the load. A collector ring is also installed on the outside of the main shaft 1011, and a brush is installed on the stator 1005 through a brush holder. The brush is in close contact with the surface of the collector ring. At the same time, the brush is also close to the access point of the excitation system. The DC excitation current generated by the excitation system is transmitted to the brush through a cable or a busbar. The brush is in close contact with the collector ring under the pressure of the spring, and the excitation current is conducted to the collector ring. The collector ring rotates with the rotor 1007, and transmits the excitation current to the three-phase windings of the rotor 1007, thereby establishing a magnetic field around the rotor 1007.

[0030] In one embodiment of the present invention, a shielding plate is installed at the internal connection of the first shell 1001 and the second shell 1002, and a pair of openings are reserved at the center of the shielding plate for the main shaft 1011 and the transmission shaft 2001 to pass through. The speed change transmission mechanism 200 is located below the shielding plate, and the rotor 1007 and the stator 1005 are located above the shielding plate. The shielding plate is used to separate the speed change transmission mechanism 200 from the rotor 1007 and the stator 1005 to prevent the speed change transmission mechanism 200 from affecting the magnetic field on the rotor 1007.

[0031] In one embodiment of the present invention, further, a plurality of heat dissipation grooves 1003 are provided on the outer side of the first shell 1001, and an external heat dissipation mechanism is installed on the outer side of the first shell 1001 and close to the heat dissipation grooves 1003. When the heat dissipation mechanism is working, the air in the first shell 1001 and the second shell 1002 can be exchanged with the external air, thereby dissipating the heat of the generator 100 and the speed transmission mechanism 200.

[0032] 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.

[0033] See also Figure 1 - Figure 3 The present invention provides a technical solution: a method for using a high-efficiency and energy-saving hydro-generator, comprising the following steps: Step 1: Install the device underground, connect the input shaft 1004 to the underwater turbine, connect the three-phase winding to the external load, and connect the device to the power monitoring instrument. Finally, install a photoelectric speed sensor on the main shaft 1011. The electric telescopic rod 2006 on the first connecting ring 2004 is controlled by a control system, and the electric telescopic rod 2006 on the second connecting ring 2005 is controlled by another control system. Step 2: Direct current is applied to the excitation system. The DC excitation current generated by the excitation system is transmitted to the brushes through cables or busbars. The brushes are in close contact with the slip rings under the pressure of the springs, and the excitation current is transmitted to the slip rings. The slip rings rotate with the rotor 1007, and transmit the excitation current to the three-phase windings of the rotor 1007, thereby establishing a magnetic field around the rotor 1007. Step 3: When the water flow acts on the turbine, the turbine can drive the input shaft 1004 to rotate through the output shaft, thereby driving the rotor 1007 to rotate, and a relative motion is generated between the magnetic field of the rotor 1007 and the three-phase winding of the stator 1005. The relative motion between the magnetic field of the rotor 1007 and the three-phase winding of the stator 1005 induces an electromotive force in the three-phase winding of the stator 1005. The induced electromotive force will form a current in the three-phase winding of the stator 1005. When the three-phase winding of the stator 1005 is connected to an external load, the current will flow through the load, thereby providing electrical energy to the load; Step 4: Use instruments to monitor the power of the generator 100, and establish a mathematical model to describe the relationship between the output power, efficiency and speed of the generator 100. By solving the model, the speed value corresponding to the optimal efficiency point is obtained. The control system is used to control the length of the electric telescopic rod 2006 on the first connecting ring 2004 and the electric telescopic rod 2006 on the second connecting ring 2005 to control the speed of the main shaft 1011, so that the generator 100 can always operate near the optimal efficiency point.

Claims

1. A highly efficient and energy-saving hydro-turbine generator, characterized in that: The invention comprises a generator (100) and a speed-changing transmission mechanism (200), wherein the generator (100) comprises a first housing (1001) and a second housing (1002), wherein the second housing (1002) is mounted on the bottom surface of the first housing (1001), and the interiors of the first housing (1001) and the second housing (1002) are connected to each other, a main shaft (1011) is rotatably connected to the interior of the first housing (1001), and an input shaft (1004) is transmission-connected to the interior of the second housing (1002), and the speed-changing transmission mechanism (200) comprises a transmission shaft (2001), wherein the transmission shaft (2001) is rotatably mounted to the interiors of the first housing (1001) and the second housing (1002), and the transmission shaft (2001) is transmission-connected to the interiors of the first housing (1001) and the second housing (1002). A first connecting ring (2004) is installed on the outer side of the driving shaft (2001), a second connecting ring (2005) is installed on the outer side of the input shaft (1004), four groups of electric telescopic rods (2006) are installed on the outer sides of the first connecting ring (2004) and the second connecting ring (2005), the telescopic ends of the electric telescopic rods (2006) are installed with connecting blocks (2007), the connecting blocks (2007) have a groove, a synchronous wheel (2008) is rotatably connected in the groove, the speed change transmission mechanism (200) further comprises a synchronous belt (2009), the synchronous belt (2009) is installed on the outer side of the synchronous wheel (2008), and the transmission shaft (2001) and the main shaft (1011) are transmission-connected.

2. The high-efficiency and energy-saving hydro-turbine generator according to claim 1, characterized in that: A driving gear (2002) is installed on the outer side of the transmission shaft (2001), and a driven gear (2003) is installed on the outer side of the main shaft (1011). The driving gear (2002) and the driven gear (2003) are meshingly connected, and the driving gear (2002) is larger than the radius of the driven gear (2003).

3. The high-efficiency and energy-saving hydro-turbine generator according to claim 1, characterized in that: A first main fixing frame (1009) is installed inside the first housing (1001), a first sub-fixing frame (1010) is installed at an angle of the first main fixing frame (1009), a first thrust bearing and a second thrust bearing are installed at the center of the first main fixing frame (1009) and the first sub-fixing frame (1010), a second main fixing frame (1012) is installed inside the second housing (1002), a second sub-fixing frame (1013) is installed at an angle of the second main fixing frame (1012), a third thrust bearing and a fourth thrust bearing are installed at the center of the second main fixing frame (1012) and the second sub-fixing frame (1013), the main shaft (1011) is installed on the inner ring of the first thrust bearing, the input shaft (1004) is installed on the inner ring of the third thrust bearing, and the transmission shaft (2001) is installed on the inner rings of the second thrust bearing and the fourth thrust bearing.

4. The high-efficiency and energy-saving hydro-turbine generator according to claim 1, characterized in that: A rotor (1007) is installed on the outside of the main shaft (1011), a stator (1005) is installed inside the first housing (1001), a plurality of excitation windings (1008) are installed at equal distances on the outside of the rotor (1007), a plurality of tooth slots (1006) are distributed at equal distances on the inner ring of the stator (1005), and three-phase windings are wound between the plurality of tooth slots (1006).

5. The high-efficiency and energy-saving hydro-turbine generator according to claim 1, characterized in that: A shielding plate is installed at the internal connection of the first shell (1001) and the second shell (1002).

6. The high-efficiency and energy-saving hydro-turbine generator according to claim 1, characterized in that: A plurality of heat dissipation slots (1003) are provided on the outer side of the first housing (1001).

7. The high-efficiency and energy-saving hydro-turbine generator according to claim 1, characterized in that: The top end of the main shaft (1011) is located outside the first housing (1001), and the bottom end of the input shaft (1004) is located outside the second housing (1002).

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