Hydroelectric power generation device

Abstract

The utility model discloses a hydroelectric generation device. The hydroelectric generation device comprises a motor assembly, a shell part and a sealing part, and the motor assembly comprises a rotating shaft and a framework coil stator arranged on the outer side of the rotating shaft in a sleeving mode; the shell part is provided with a first inner cavity and a first hole communicated with the first inner cavity, and the framework coil stator is arranged in the first inner cavity; one end of the rotating shaft penetrates out of the first inner cavity from the first hole; the sealing part comprises a first sealing ring, the end face, close to the first hole, of the framework coil stator is a first wall face, the first sealing ring is arranged on the rotating shaft in a sleeving mode and matched with the rotating shaft in a sealing mode, and the first sealing ring abuts against the first wall face in a sealing mode so that external matter can be prevented from entering the motor assembly. The hydroelectric generation device can prevent external substances, especially granular impurities, from entering the motor assembly so as to ensure normal operation of the motor assembly, and has the advantages that the sealing component is firmly and stably mounted and positioned, and the sealing effect is good.

Description

Technical Field

[0001] The utility model relates to a power generation device, and more specifically, to a hydropower generation device. Background Art

[0002] In the prior art, there is a gap between the rotating shaft and the outer shell of the hydroelectric power generation device. Granular impurities in the water flow can easily enter the motor assembly through the gap between the rotating shaft and the outer shell, causing the motor assembly to fail to operate, affecting the normal use of the hydroelectric power generation device. Utility Model Content

[0003] The embodiment of the utility model provides a hydroelectric power generation device, in which a first sealing ring is arranged on the outside of the rotating shaft and is sealed with the rotating shaft, and the first sealing ring is sealed against the first wall surface of the skeleton coil stator close to the first hole, so that foreign matter, especially granular impurities, cannot enter the interior of the motor assembly. The hydroelectric power generation device of the embodiment of the present application provides a solution to prevent foreign matter from entering the interior of the hydroelectric power generation device so as to ensure the normal operation of the motor assembly, and has the advantages of firm and stable installation and positioning of the sealing component and good sealing effect.

[0004] The technical solution of the hydroelectric power generation device in the embodiment of the present application is as follows:

[0005] A hydroelectric power generation device, comprising:

[0006] The motor assembly comprises a rotating shaft and a skeleton coil stator sleeved on the outer side of the rotating shaft;

[0007] The outer shell is provided with a first inner cavity and a first hole communicating with the first inner cavity, the skeleton coil stator is arranged in the first inner cavity; one end of the rotating shaft passes through the first hole to the outside of the first inner cavity; and

[0008] The sealing component includes a first sealing ring, the end face of the skeleton coil stator close to the first hole is a first wall, the first sealing ring is sleeved on the rotating shaft and sealed with the rotating shaft, and the first sealing ring is sealed against the first wall to prevent foreign matter from entering the interior of the motor assembly.

[0009] The hydroelectric power generation device provided by the embodiment of the utility model is provided with a first sealing ring which is sleeved on the outside of the rotating shaft and seals with the rotating shaft, and the first sealing ring is seals with the first wall surface of the skeleton coil stator near the first hole, so that the gap between the rotating shaft and the skeleton coil stator near the first hole position is sealed and blocked by the first sealing ring, and foreign matter, especially granular impurities, cannot enter the interior of the motor assembly through the gap between the rotating shaft and the skeleton coil stator. Foreign matter, especially granular impurities entering the interior of the motor assembly will hinder the rotation of the rotating shaft and the rotor and cause damage to the skeleton coil stator. The sealing component of the hydroelectric power generation device in the embodiment of the present application ensures the normal operation of the motor assembly and the hydroelectric power generation device.

[0010] In the prior art, there has been a practice of setting a sealing structure between the rotating shaft and the housing of a hydroelectric power generation device, but the sealing structure has the problem of loose installation and poor sealing performance. In the hydroelectric power generation device of the embodiment of the present application, the first sealing ring is set inside the housing, and the first sealing ring can be set to be restrained by both the housing and the motor assembly. Since the skeleton coil stator and the housing of the motor assembly are fixedly arranged, the installation and positioning of the sealing component restrained by the housing and the motor assembly is more firm and stable, and it is not easy to have the problem of sealing failure caused by loose positioning of the sealing component. In addition, the sealing component is set inside the housing, and the housing has a protective and supporting effect on the sealing component, which can increase the service life of the sealing component and avoid frequent replacement of the sealing component.

[0011] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the technical solution of the utility model and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the utility model and do not constitute a limitation on the technical solution of the utility model.

[0013] Figure 1 A schematic diagram of the three-dimensional structure of a hydroelectric power generation device according to an embodiment of the present application;

[0014] Figure 2 for Figure 1 A schematic diagram of the main structure of a hydroelectric power generation device;

[0015] Figure 3 for Figure 2 A schematic diagram of the structure of a hydroelectric power generation device viewed from above;

[0016] Figure 4 for Figure 2 A schematic cross-sectional structure diagram of a hydroelectric power generation device;

[0017] Figure 5 for Figure 4 A partial enlarged structural schematic diagram of part A;

[0018] Figure 6 for Figure 4 Schematic diagram of the local enlarged structure of part B.

[0019] Figure 7 for Figure 4 Schematic diagram of the exploded structure of the hydroelectric power generation device;

[0020] Figure 8 A schematic cross-sectional structure diagram of a motor assembly according to an embodiment of the present application;

[0021] Fig. 9 for Figure 8 A schematic diagram of the partial enlarged structure of the C portion;

[0022] Fig.10 This is a schematic cross-sectional structure diagram of a first sealing ring according to an embodiment of the present application;

[0023] Fig.11 This is a schematic cross-sectional structure diagram of a retaining ring according to an embodiment of the present application;

[0024] Fig.12 It is a schematic cross-sectional structure diagram of a housing component according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the embodiments of the utility model will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.

[0026] Please refer to the attached Figure 1 To Attachment Fig.12 The structural diagram of the hydroelectric power generation device 100 of the embodiment of the present application is shown in FIG. Figures 1 to 3 Schematic diagram of the appearance of the hydroelectric power generation device 100 according to an embodiment of the present application. Figure 4 is a schematic cross-sectional structure diagram of a water power generation device 100 according to an embodiment of the present application, Figure 5 for Figure 4 The enlarged structural diagram of the A part of the hydroelectric power generation device 100 is shown in FIG. Figure 7 for Figure 4 The exploded structural diagram of the hydroelectric power generation device 100 is shown in FIG. Figure 8 FIG. 1 is a schematic cross-sectional view of a motor assembly 1 according to an embodiment of the present application. Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, the embodiment of the present application provides a hydroelectric power generation device 100, including a motor assembly 1, a housing 2 and a sealing component 3. Figure 8 As shown, the motor assembly 1 includes a rotating shaft 11 and a skeleton coil stator 12 sleeved on the outer side of the rotating shaft 11. Figure 7 As shown, the housing 2 is provided with a first inner cavity 21 and a first hole 22 communicating with the first inner cavity 21. Figure 4 As shown, the skeleton coil stator 12 is arranged in the first inner cavity 21. Figure 4 and Figure 5 As shown, one end of the rotating shaft 11 passes through the first hole 22 to the outside of the first inner cavity 21. Figure 4 , Figure 5 , Figure 8 and Fig. 9 As shown, the sealing component includes a first sealing ring 31, and the end face of the skeleton coil stator 12 close to the first hole 22 is a first wall 1211. The first sealing ring 31 is sleeved on the rotating shaft 11 and sealed with the rotating shaft 11, and the first sealing ring 31 is sealed against the first wall 1211 to prevent foreign matter from entering the interior of the motor assembly 1.

[0027] Specifically, the hydroelectric power generation device 100 provided in the embodiment of the present application can be applied to a shower, but is not limited to a shower. Figure 8 The motor assembly 1 shown includes a rotating shaft 11, a skeleton coil stator 12, and a rotor 13. The skeleton coil stator 12 is fixedly disposed in the first inner cavity 21 of the housing 2. Figure 5 As shown, one end of the rotating shaft 11 away from the rotor 13 passes through the first hole 22 to the outside of the first inner cavity 21 and is connected to the external driving component 5. The rotating shaft 11 drives the rotor 13 to rotate under the action of the external driving force, so that the skeleton coil stator 12 and the motor component 1 generate current to generate electrical energy.

[0028] In the prior art, such as Figure 4 and Figure 5 As shown, foreign matter and impurity particles easily enter the first inner cavity 21 from the gap between the rotating shaft 11 and the outer shell 2 at the position of the first hole 22, thereby interfering with the normal operation of the hydroelectric power generation device, especially granular impurities enter the motor assembly 1 from the gap between the rotating shaft 11 and the skeleton coil stator 12, which will cause the rotating shaft 11 and the rotor 13 to be unable to rotate normally, making the motor assembly 1 unable to work normally. Water flow enters the first inner cavity 21 from the first hole 22, which will also cause corrosion damage to the motor assembly 1.

[0029] The hydroelectric power generation device 100 provided in the embodiment of the present application is as follows: Figure 5As shown, a first sealing ring 31 is provided to be sleeved on the outside of the rotating shaft 11 and to be sealed with the rotating shaft 11, and the first sealing ring 31 is sealed with the first wall 1211 of the skeleton coil stator 12 near the first hole 22, so that the gap between the rotating shaft 11 and the skeleton coil stator 12 near the position of the first hole 22 is sealed and blocked by the first sealing ring 31, and foreign matter, especially granular impurities, cannot enter the interior of the motor assembly 1 through the gap between the rotating shaft 11 and the skeleton coil stator 12. Foreign matter, especially granular impurities, entering the interior of the motor assembly 1 will hinder the rotation of the rotating shaft 11 and the rotor 13 and cause damage to the skeleton coil stator 12. The sealing component 3 of the hydroelectric power generation device 100 of the embodiment of the present application ensures the normal operation of the motor assembly 1 and the hydroelectric power generation device 100. In addition, the side of the first sealing ring 31 facing away from the skeleton coil stator 12 can be arranged to be sealed against the wall structure of the first inner cavity 21, so that the gap between the outer shell 2 and the rotating shaft 11 at the position of the first hole 22 is sealed and blocked by the first sealing ring 31 from one side of the first inner cavity 21, so that foreign matter cannot enter the first inner cavity 21 through the first hole 22, thereby preventing the motor component 1 from being corroded and damaged by external water flow.

[0030] Furthermore, the first sealing ring 31 of the sealing component 3 is arranged inside the housing 2, and the first sealing ring 31 can be arranged to be abutted and limited by both the housing 2 and the motor assembly 1. Since the skeleton coil stator 12 of the motor assembly 1 and the housing 2 are fixedly arranged, the installation and positioning of the sealing component 3 limited and fixed by the housing 2 and the motor assembly 1 is more firm and stable, and it is not easy to cause the sealing component 3 to loosen and cause the sealing failure. Furthermore, the sealing component 3 is arranged inside the housing 2, and the housing 2 has a protective and supporting effect on the sealing component 3, which can increase the service life of the sealing component 3 and avoid frequent replacement of the sealing component 3.

[0031] In an exemplary embodiment, Figure 5 and Fig.10 As shown, the first sealing ring 31 includes a radially extending portion 311 extending along the radial direction of the rotating shaft 11 .

[0032] A sealing protrusion 312 is provided at the radial inner end of the radial extension portion 311 . The sealing protrusion 312 abuts against the rotating shaft 11 for sealing. The radial outer end of the radial extension portion 311 abuts against the first wall surface 1211 for sealing.

[0033] Specifically, since the rotating shaft 11 and the first wall surface 1211 are arranged at intervals along the radial direction of the rotating shaft 11, the radial extension portion 311 of the first sealing ring 31 is arranged to extend radially along the rotating shaft 11, which is conducive to the first sealing ring 31 sealing the gap between the rotating shaft 11 and the first wall surface 1211. The radial inner end of the radial extension portion 311 is provided with a sealing protrusion 312, and the sealing protrusion 312 abuts against the outer surface of the rotating shaft 11 to seal, so that the seal between the first sealing ring 31 and the rotating shaft 11 is more firm and reliable, and even if the rotating shaft 11 rotates, it is not easy to cause the seal between the first sealing ring 31 and the rotating shaft 11 to fail.

[0034] In an exemplary embodiment, Figure 5 and Fig.10 As shown, the sealing protrusion 312 includes a first sealing lip 3121 protruding toward the first inner cavity 21, and a second sealing lip 3122 protruding toward the first hole 22. The first sealing lip 3121 and the second sealing lip 3122 are arranged at intervals along the axial direction of the rotating shaft 11, and the first sealing lip 3121 is arranged on the side of the second sealing lip 3122 close to the first inner cavity 21.

[0035] Specifically, the sealing protrusion 312 includes a first sealing lip 3121 and a second sealing lip 3122 which are spaced apart along the axial direction of the rotating shaft 11. The first sealing lip 3121 and the second sealing lip 3122 are both sealed against the outer surface of the rotating shaft 11, so that the seal between the sealing protrusion 312 of the first sealing ring 31 of the embodiment of the present application and the rotating shaft 11 is more firm and the sealing effect is better.

[0036] like Figure 5 As shown, the first sealing lip 3121 is provided to protrude toward the first inner cavity 21, and the second sealing lip 3122 is provided to protrude toward the first channel 22, and the second sealing lip 3122 is located on the side of the first sealing lip 3121 away from the first inner cavity 21, so that the first sealing lip 3121 and the second sealing lip 3122 are more stably in contact with the rotating shaft 11. Moreover, after foreign matter flows into the gap between the first hole 22 and the rotating shaft 11, it will flow along the outer surface of the second sealing lip 3122 facing the first channel 22, and turn to flow to the outside of the housing 2, so as to prevent foreign matter and granular impurities from flowing into the interior of the motor assembly 1 from the gap between the sealing protrusion 312 and the rotating shaft 11.

[0037] exist Figure 5 and Fig.10 In the embodiment of the first sealing ring 31 shown, the sealing protrusion 312 is provided with two sealing parts, a first sealing lip 3121 and a second sealing lip 3122. It is understandable that the sealing protrusion 312 can also be provided with other numbers of sealing parts, all within the protection scope of the present application.

[0038] In an exemplary embodiment, during the installation of the hydroelectric power generation device 100 , a pre-tightening force is provided between the first sealing lip 3121 and the second sealing lip 3122 and the rotating shaft 11 .

[0039] Specifically, since the side of the first sealing ring 31 facing the outside of the housing 2 is continuously impacted by the external water flow, the first sealing ring 31 sleeved on the outside of the rotating shaft 11 may be impacted by the water flow and displaced and deformed relative to the rotating shaft 11. During the installation of the hydroelectric power generation device 100, a pre-tightening force is provided between the first sealing lip 3121 and the second sealing lip 3122 and the rotating shaft 11, so that the sealing structure between the first sealing lip 3121 and the second sealing lip 3122 and the rotating shaft 11 is relatively stable and firm, and it is not easy to cause dislocation and looseness to cause sealing failure.

[0040] It is understandable that the first sealing ring 31 can be made of elastic materials such as rubber, polytetrafluoroethylene, etc. During the installation of the hydroelectric power generation device 100, the first sealing lip 3121 and the second sealing lip 3122 can be configured to undergo extrusion elastic deformation, so that a pre-tightening force is provided between the first sealing lip 3121 and the second sealing lip 3122 and the rotating shaft 11.

[0041] In an exemplary embodiment, Figure 5 and Fig.10 As shown, the angle between the side of the second sealing lip 3122 facing the rotating shaft 11 and the axis of the rotating shaft 11 is smaller than the angle between the side of the first sealing lip 3121 facing the rotating shaft 11 and the axis of the rotating shaft 11 .

[0042] Specifically, the angle between the side of the second sealing lip 3122 facing the rotating shaft 11 and the axis of the rotating shaft 11 is set to be smaller than the angle between the side of the first sealing lip 3121 facing the rotating shaft 11 and the axis of the rotating shaft 11, so that the side of the first sealing ring 31 facing the outside of the housing 2 can better resist the impact force of external water flow, so that the sealing structure between the first sealing ring 31 and the rotating shaft 11 is more firm and stable.

[0043] In an exemplary embodiment, Figure 5 and Fig.10 As shown, the first sealing ring 31 also includes an axial extension portion 313 extending axially along the rotating shaft 11, and the axial extension portion 313 is connected to the radial outer end of the radial extension portion 311; the first wall surface 1211 is provided with a first recess 1212, and the axial extension portion 313 and the first recess 1212 are matched in a concave-convex manner.

[0044] Specifically, the axial extension portion 313 of the first sealing ring 31 cooperates with the first recess 1212 of the first wall 1211, so that the sealing between the first sealing ring 31 and the first wall 1211 of the stator protrusion 121 is more firm and stable, and the sealing effect is better.

[0045] It is understandable that the radial outer end of the first sealing ring 31 can also be configured to include a stepped groove structure, and a corresponding protrusion structure is provided on the first wall 1211, so that the stepped groove structure at the radial outer end of the first sealing ring 31 and the protrusion structure on the first wall 1211 are matched with each other, so that the first sealing ring 31 and the first wall 1211 are abutted and sealed together, all of which are within the protection scope of the present application.

[0046] In an exemplary embodiment, Figure 5 , Fig.11 and Fig.12 As shown, the end wall of the first inner cavity 21 close to the first hole 22 is the second wall 2111, and the sealing component 3 also includes a retaining ring 32, which is at least partially located between the first sealing ring 31 and the outer shell 2, and the retaining ring 32 is sealed and connected to the second wall 2111, and the first sealing ring 31 and the retaining ring 32 are abutted and sealed.

[0047] Specifically, a retaining ring 32 is arranged so as to be at least partially located between the first sealing ring 31 and the outer shell 2, the retaining ring 32 is sealedly connected to the second wall 2111, and the first sealing ring 31 and the retaining ring 32 are sealed against each other, so that the retaining ring 32 can prevent foreign matter from entering the first inner cavity 21 through the gap between the skeleton coil stator 12 and the wall of the first inner cavity 21, thereby interfering with the normal operation of the motor assembly 1.

[0048] The first inner cavity 21 should be configured as a sealed and waterproof structure to prevent external water from entering the first inner cavity 21 and corroding and damaging the motor component 1.

[0049] It is understandable that, in some exemplary embodiments, only the first sealing ring 31 may be provided between the skeleton coil stator 12 and the wall of the housing 2, the first sealing ring 31 is provided to seal with the rotating shaft 11, and the first sealing ring 31 is provided to seal against the first wall 1211 and the second wall 2111, which can also prevent foreign substances from entering the first inner cavity 21. The sealing component 3 is provided to include the first sealing ring 31 and the retaining ring 32, so that the sealing effect of the sealing component 3 is better, and the installation and positioning of the sealing component 3 is more firm and stable.

[0050] In an exemplary embodiment, Figure 4 , Figure 5 and Figure 7As shown, a limiting cavity 211 is provided at one end of the first inner cavity 21 close to the first hole 22 , the limiting cavity 211 is communicated with the first hole 22 , and the skeleton coil stator 12 is provided with a stator protrusion 121 , which is inserted into the limiting cavity 211 .

[0051] The first wall surface 1211 is disposed on the stator protrusion 121 , and the sealing component 3 is disposed in the limiting cavity 211 and between the stator protrusion 121 and the housing component 2 .

[0052] Specifically, a limiting cavity 211 is provided at one end of the first inner cavity 21 close to the first hole 22, and the stator protrusion 121 of the skeleton coil stator 12 is inserted into the limiting cavity 211, which is conducive to fixing the position of the skeleton coil stator 12 in the first inner cavity 21; the rotating shaft 11 can be arranged to pass through the stator protrusion 121 and pass out of the first hole 22, thereby guiding the rotating shaft 11 to pass through the limiting cavity 211 and the first hole 22 to the outside of the first inner cavity 21.

[0053] In addition, the sealing component 3 is arranged in the limiting cavity 211, and the sealing component 3 is arranged between the stator protrusion 121 and the housing 2. Each wall surface of the limiting cavity 211 has a limiting effect on the sealing component 3, so that the installation and positioning of the sealing component 3 is more secure. The limiting cavity 211 is arranged in the first inner cavity 21, and the stator protrusion 121 is inserted into the limiting cavity 211. The sealing component 3 can be arranged to seal the gap between the wall surface of the limiting cavity 211, the rotating shaft 11 and the stator protrusion 121, thereby reducing the sealing range of the sealing component 3, making the hydroelectric power generation device 100 of the present application easier to seal, and making the sealing effect of the sealing component 3 of the hydroelectric power generation device 100 of the embodiment of the present application better.

[0054] In an exemplary embodiment, Figure 4 , Figure 5 , Figure 7 and Fig.11 As shown, the retaining ring 32 is an L-shaped retaining ring, which includes a horizontal section 321 extending radially along the rotating shaft 11 and a vertical section 322 extending axially along the rotating shaft 11 , and the radial outer end of the horizontal section 321 is connected to the vertical section 322 .

[0055] The horizontal section 321 is sandwiched between the second wall surface 2111 and the first sealing ring 31 , and is sealed against the second wall surface 2111 and the first sealing ring 31 ; the vertical section 322 is at least partially located between the radial outer end of the first sealing ring 31 and the side wall of the limiting cavity 211 .

[0056] Specifically, the horizontal section 321 is arranged to abut against the second wall surface 2111 and the first sealing ring 31 for sealing, so that a sealing structure is formed between the first sealing ring 31, the horizontal section 321 of the retaining ring 32, and the second wall surface 2111 of the housing 2, which can prevent foreign substances from flowing into the first inner cavity 21 from the gap between the first sealing ring 31 and the stator protrusion 121 and the wall surface of the limiting cavity 211, thereby affecting the normal operation of the hydroelectric power generation device 100. The vertical section 322 is arranged to be at least partially located between the radial outer end of the first sealing ring 31 and the side wall of the limiting cavity 211, and the vertical section 322 has a limiting effect on the first sealing ring 31, so that the abutting sealing structure between the first sealing ring 31 and the stator protrusion 121 and the rotating shaft 11 is more firm and stable.

[0057] In an exemplary embodiment, Figure 5 and Fig. 9 As shown, the side wall of the stator protrusion 121 is provided with a second recess 1213 , and the vertical section 322 abuts against the radial outer end of the first sealing ring 31 and the wall surface of the second recess 1213 .

[0058] Specifically, the second recess 1213 has a limiting effect on the vertical section 322 of the L-shaped retaining ring, so that the abutting sealing structure between the L-shaped retaining ring and the first sealing ring 31 and the stator protrusion 121 is more firm and stable.

[0059] In an exemplary embodiment, the retaining ring 32 and the housing member 2 are integrally formed.

[0060] Specifically, the retaining ring 32 and the outer shell 2 are integrally formed, which can simplify the manufacturing process and assembly process of the hydroelectric power generation device 100 of the present application.

[0061] In an exemplary embodiment, Figure 4 , Figure 6 , Figure 7 As shown, the hydroelectric power generation device 100 of the present application also includes a temperature measuring component 4 and a driving component 5. The outer shell 2 is provided with a second hole 23 connected to the first inner cavity 21, and the temperature measuring component 4 is passed through the second hole 23; a second sealing ring 8 is provided between the temperature measuring component 4 and the second hole 23.

[0062] The driving assembly 5 is connected to one end of the rotating shaft 11 extending outside the first inner cavity 21 to drive the rotating shaft 11 to rotate.

[0063] Specifically, the temperature measuring component 4 is used to monitor the temperature of the water flowing through the driving component 5, and is used to determine whether the driving component 5 is in a normal working state. Since the driving component 5 rotates synchronously with the rotating shaft 11 and the rotor 13 when the hydroelectric power generation device 100 is working normally, the temperature measuring component 4 can further assist in analyzing whether the hydroelectric power generation device 100 is working normally.

[0064] A second sealing ring 8 is provided between the temperature measuring component 4 and the second hole 23 , so that the temperature measuring component 4 and the second hole 23 are sealed and connected to each other, thereby preventing water from flowing into the first inner cavity 21 from the gap between the second hole 23 and the temperature measuring component 4 and corroding and damaging the motor component 1 .

[0065] The driving assembly 5 is connected to one end of the rotating shaft 11 extending outside the first inner cavity 21 , and is used to provide driving force for the rotation of the rotating shaft 11 and the rotor 13 .

[0066] Optionally, the temperature measuring component 4 is a thermistor, which has the advantages of high sensitivity, various models and specifications, small size and simple structure.

[0067] exist Figure 4 In the embodiment of the hydroelectric power generation device 100 shown, the curve with an arrow indicates the direction of water flow near the driving component 5. The water flows through the driving component 5 and flows to the temperature measuring component 4. The temperature measuring component 4 is arranged downstream of the water flow flowing through the driving component 5 and can monitor the temperature of the water flow flowing through the driving component 5, thereby determining whether the driving component 5 is in a normal working state.

[0068] In an exemplary embodiment, Figure 6 , Figure 7 and Fig.12 As shown, the second hole 23 is a stepped hole, which includes a first section 231 and a second section 232 connected along the axial direction of the rotating shaft 11. The second section 232 is located on the side of the first section 231 close to the first inner cavity 21, and the cross-sectional area of ​​the second section 232 is larger than the cross-sectional area of ​​the first section 231. The second sealing ring 8 is arranged in the second section 232.

[0069] Specifically, the second sealing ring 8 is arranged in the second section 232 of the stepped hole with a larger cross-sectional area, and the stepped hole has a limiting effect on the second sealing ring 8, so that the installation and positioning of the second sealing ring 8 is more firm and stable. In addition, the second sealing ring 8 is arranged at one end of the stepped hole close to the first inner cavity 21, so that the second sealing ring 8 can be away from the water flow and impurities outside the housing 2, reducing the corrosion damage to the second sealing ring 8 by external substances, which has the effect of protecting the second sealing ring 8 and extending the service life of the second sealing ring 8.

[0070] Optionally, the second sealing ring 8 is an O-ring, which has a simple structure, low cost, and is easy to install and maintain.

[0071] In an exemplary embodiment, Figure 4 , Figure 7 As shown, the driving assembly 5 includes an impeller 51 and a water inlet end cover 52 , the rotating shaft 11 is configured to be connected to the impeller 51 , and the water inlet end cover 52 is disposed on a side of the impeller 51 away from the skeleton coil stator 12 .

[0072] like Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, the motor assembly 1 also includes a rotor 13, which is disposed in the inner cavity of the skeleton coil stator 12. The skeleton coil stator 12 is provided with a third hole 122. The rotor 13 is sleeved on the outside of one end of the rotating shaft 11, and the other end of the rotating shaft 11 passes through the third hole 122 and the first hole 22 in sequence to the outside of the first inner cavity 21.

[0073] like Figure 3 As shown, the water inlet end cover 52 is provided with a water inlet hole 521. Figure 1 As shown, the housing 2 is provided with a water outlet 24 , and water flows in from the water inlet 521 , impacting the impeller 51 to drive the impeller 51 to rotate, thereby driving the rotating shaft 11 and the rotor 13 to rotate.

[0074] Specifically, a plurality of water inlet holes 521 may be evenly distributed circumferentially on the water inlet end cover 52 , and the water channels of the plurality of water inlet holes 521 may be inclined so as to increase the impact force of the water flow impacting the impeller 51 and accelerate the rotation of the impeller 51 .

[0075] like Figure 4 and Figure 5 As shown, a wear-resistant ceramic sleeve can be provided at the position of the third hole 122, and the wear-resistant ceramic sleeve is sleeved on the end of the outer side of the rotating shaft 11 close to the impeller 51, so as to reduce the wear between the rotating shaft 11 and the wall surface of the third hole 122 of the skeleton coil stator 12. It is understandable that a wear-resistant ceramic sleeve can also be sleeved on the outer side of the end of the rotating shaft 11 away from the impeller 51, so as to reduce the sliding wear between the rotating shaft 11 and the skeleton coil stator 12.

[0076] In an exemplary embodiment, Figure 4 , Figure 7 and Fig.12 As shown, the housing 2 is provided with a second inner cavity 25 . The second inner cavity 25 is arranged on a side of the first hole 22 away from the skeleton coil stator 12 . The impeller 51 is arranged in the second inner cavity 25 .

[0077] Specifically, the impeller 51 is disposed in the second inner cavity 25 , and the water flow that impacts the impeller 51 and drives the impeller 51 to rotate is contained in the second inner cavity 25 , which can increase the impact force of the water flow on the impeller 51 .

[0078] In an exemplary embodiment, Figure 4 and Figure 5 As shown, a portion of the impeller 51 located near the rotation axis is inserted into the first hole 22 .

[0079] Specifically, a portion of the impeller 51 located near its rotation axis is inserted into the first hole 22 , so that the height of the hydroelectric power generation device 100 of the present application can be shortened, thereby reducing the volume and occupied space of the hydroelectric power generation device 100 .

[0080] The partial structure of the impeller 51 located near the rotation axis is inserted into the first hole 22 , so that the flow space of foreign matter in the first hole 22 is reduced, thereby preventing a large amount of foreign matter from entering the first hole 22 .

[0081] In an exemplary embodiment, Figure 1 , Figure 4 and Figure 7 As shown, the hydroelectric power generation device 100 also includes a motor rear cover 6 and a power transmission line 7. The motor rear cover 6 and the power transmission line 7 are both arranged at one end of the outer shell 2 away from the drive assembly 5. The motor rear cover 6 is sealed and connected to the outer shell 2, and the power transmission line 7 is connected to the motor rear cover 6.

[0082] Specifically, the motor rear cover 6 is sealed and connected to the housing 2 to prevent foreign matter, such as water, from entering the first inner cavity 21. The electric energy generated by the motor assembly 1 is transmitted through the power transmission line 7. The wire of the temperature measuring assembly 4 can also be connected to the motor rear cover 6 to transmit the data measured by the temperature measuring assembly 4 to the user.

[0083] The working principle of the hydroelectric power generation device 100 of an embodiment of the present application is as follows: water flows into the second inner cavity 25 from the water inlet hole 521 set on the water inlet end cover 52, impacts the impeller 51 to make the impeller 51 rotate, the impeller 51 rotates through the rotating shaft 11 and the rotor 13, and the rotor 13 rotates in the inner cavity of the skeleton coil stator 12, so that the motor assembly 1 generates electric energy, and the electric energy is transmitted through the power transmission line 7 on the motor back cover 6. After the water flow entering the second inner cavity 25 impacts the impeller 51, it flows out from the water outlet 24 provided on the outer shell 2 and flows to the temperature measuring component 4, so that the temperature measuring component 4 can monitor the working status of the drive component 5 and the motor component 1. A sealing component 3 is set between the wall surface of the limiting concave cavity 211, the rotating shaft 11 and the stator protrusion 121, and the sealing component 3 can effectively prevent foreign matter from entering the first inner cavity 21 to interfere with the normal operation of the motor assembly 1. A second sealing ring 8 is set between the second hole 23 and the temperature measuring component 4 to prevent water from entering the first inner cavity 21.

[0084] In the description of the present invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "relative", "four corners", "periphery" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0085] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", and "assembly" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; the terms "installation", "connection", and "fixed connection" can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0086] Although the implementation methods disclosed in the utility model are as above, the above contents are only implementation methods adopted to facilitate the understanding of the utility model, and are not used to limit the utility model. Any technician in the field to which the utility model belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in the utility model, but the scope of patent protection of the utility model shall still be defined by the attached claims.

Claims

1. A hydroelectric power generation device, characterized in that: include: The motor assembly comprises a rotating shaft and a skeleton coil stator sleeved on the outer side of the rotating shaft; The outer shell is provided with a first inner cavity and a first hole communicating with the first inner cavity, the skeleton coil stator is arranged in the first inner cavity; one end of the rotating shaft passes through the first hole to the outside of the first inner cavity; and The sealing component includes a first sealing ring, the end face of the skeleton coil stator close to the first hole is a first wall, the first sealing ring is sleeved on the rotating shaft and sealed with the rotating shaft, and the first sealing ring is sealed against the first wall to prevent foreign matter from entering the interior of the motor assembly.

2. The hydroelectric power generation device according to claim 1, characterized in that: The first sealing ring includes a radially extending portion extending along the radial direction of the rotating shaft; A sealing convex portion is provided at the radial inner end of the radial extension portion, and the sealing convex portion abuts and seals against the rotating shaft, and a radial outer end of the radial extension portion abuts and seals against the first wall surface.

3. The hydroelectric power generation device according to claim 2, characterized in that: The sealing protrusion includes a first sealing lip protruding toward the first inner cavity and a second sealing lip protruding toward the first hole. The first sealing lip and the second sealing lip are spaced apart along the axial direction of the rotating shaft, and the first sealing lip is arranged on a side of the second sealing lip close to the first inner cavity.

4. The hydroelectric power generation device according to claim 3, characterized in that: During the installation of the hydroelectric power generation device, a pre-tightening force is provided between the first sealing lip and the second sealing lip and the rotating shaft; and / or, An included angle between a side surface of the second sealing lip facing the rotating shaft and the axis of the rotating shaft is smaller than an included angle between a side surface of the first sealing lip facing the rotating shaft and the axis of the rotating shaft.

5. The hydroelectric power generation device according to claim 2, characterized in that: The first sealing ring also includes an axial extension portion extending along the axial direction of the rotating shaft, and the axial extension portion is connected to the radial outer end of the radial extension portion; the first wall surface is provided with a first recessed portion, and the axial extension portion is concave-convexly matched with the first recessed portion.

6. The hydroelectric power generation device according to any one of claims 1 to 5, characterized in that: The end wall of the first inner cavity close to the first hole is a second wall surface. The sealing component also includes a retaining ring, which is at least partially located between the first sealing ring and the outer shell component. The retaining ring is sealed to the second wall surface, and the first sealing ring is sealed against the retaining ring.

7. The hydroelectric power generation device according to claim 6, characterized in that: A limiting cavity is provided at one end of the first inner cavity close to the first hole, the limiting cavity is communicated with the first hole, the skeleton coil stator is provided with a stator convex portion, and the stator convex portion is inserted in the limiting cavity; The first wall surface is arranged on the stator protrusion, and the sealing component is arranged in the limiting cavity and between the stator protrusion and the housing component.

8. The hydroelectric power generation device according to claim 7, characterized in that: The retaining ring is an L-shaped retaining ring, which includes a horizontal section extending along the radial direction of the rotating shaft and a vertical section extending along the axial direction of the rotating shaft, and the radial outer end of the horizontal section is connected to the vertical section; The horizontal section is sandwiched between the second wall surface and the first sealing ring, and is sealed against the second wall surface and the first sealing ring; the vertical section is at least partially located between the radial outer end of the first sealing ring and the side wall of the limiting cavity.

9. The hydroelectric power generation device according to claim 8, characterized in that: A second recess is provided on the side wall of the stator protrusion, and the vertical section abuts against the radial outer end of the first sealing ring and the wall surface of the second recess.

10. The hydroelectric power generation device according to claim 6, characterized in that: The retaining ring and the outer shell are configured to be integrally formed.

11. The hydroelectric power generation device according to claim 1, characterized in that: It also includes a temperature measuring component and a driving component, the outer shell is provided with a second hole communicating with the first inner cavity, the temperature measuring component is passed through the second hole; a second sealing ring is provided between the temperature measuring component and the second hole; The driving assembly is connected to one end of the rotating shaft extending outside the first inner cavity to drive the rotating shaft to rotate.

12. The hydroelectric power generation device according to claim 11, characterized in that: The second hole is a stepped hole, which includes a first section and a second section connected along the axial direction of the rotating shaft. The second section is located on a side of the first section close to the first inner cavity, and the cross-sectional area of ​​the second section is larger than the cross-sectional area of ​​the first section. The second sealing ring is arranged in the second section.

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