Underwater running generator and sealing structure thereof

Abstract

The invention relates to an underwater operation generator and a sealing structure thereof, the underwater operation generator comprises the sealing structure, the sealing structure comprises a slip ring sealing sleeve, a sleeve body, a quick connection structure and a one-way valve, the bottom end of the sleeve body is in sealing connection with a rear end cover of the generator, and the sleeve body and the rear end cover jointly define a sealed slip ring chamber; an adjuster connecting port is formed in one side of the sleeve body; a connecting structure is arranged at the top end of the sleeve body, the one-way valve is installed in the connecting structure, the quick connecting structure corresponds to the one-way valve and is installed at the top end of the sleeve body and is connected with the connecting structure in a sealed mode, an air pipe connector is arranged on the quick connecting structure, one end of the air pipe connector is connected with a high-pressure air pump, and the other end of the air pipe connector is connected with an air outlet. The other end of the air pipe connector is communicated with the sliding ring chamber through the one-way valve. A fully-sealed positive pressure environment can be formed in the slip ring chamber, water pressure generated by deep water can be resisted, and a generator can work for a long time in the deep water environment.

Description

Technical Field

[0001] The invention relates to an automobile AC generator, in particular to an underwater generator and a sealing structure thereof. Background Art

[0002] In the brushed generator of the prior art, the brushes must operate in a relatively dry environment; the generator uses a slip ring seal sleeve, a regulator, a rear end cover, a bearing, and a slip ring with an O-ring and a sealing gasket to form a sealing structure, and the brushes work in the sealing structure. However, the sealing level of the existing generator can only meet IPX7, and when the generator is working, it cannot form a fully sealed structure; therefore, the generator can only operate at a depth of about 1m underwater or soak for about 30 minutes, and the deeper the underwater depth, the greater the water pressure will be, and the water is more likely to enter the brushes and cause the generator to fail. The slip ring chamber of the generator of the prior art cannot form a fully sealed structure, and the sealing of the existing closed slip ring chamber structure can only ensure that the generator can operate for a short time underwater in shallow water, and cannot operate for a long time underwater, let alone meet the requirements of deep water operation. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a generator and a sealing structure thereof that can run underwater in view of the above-mentioned defects of the prior art.

[0004] In order to achieve the above object, the present invention provides a sealing structure of a generator, which is arranged on a rear end cover of the generator, and includes:

[0005] A slip ring sealing sleeve comprises a sleeve body, a quick connection structure and a one-way valve, wherein the bottom end of the sleeve body is sealingly connected to the rear end cover of the generator, and the sleeve body and the rear end cover together enclose a sealed slip ring chamber; a regulator connection port is provided on one side of the sleeve body; a connection structure is provided on the top end of the sleeve body, the one-way valve is installed in the connection structure, the quick connection structure is installed on the top end of the sleeve body corresponding to the one-way valve, and is sealingly connected to the connection structure, an air pipe interface is provided on the quick connection structure, one end of the air pipe interface is connected to a high-pressure air pump, and the other end of the air pipe interface is communicated with the slip ring chamber through the one-way valve.

[0006] The sealing structure of the generator described above further includes an oil seal, which is arranged in the rear bearing chamber of the rear end cover and cooperates with the slip ring and rear bearing of the generator to seal to prevent water from entering the slip ring chamber through the rear bearing.

[0007] The sealing structure of the generator described above further includes a steel ring, wherein the slip ring includes a slip ring body, an upper slip ring insert and a lower slip ring insert, wherein the slip rings are installed in parallel on the upper part of the slip ring body, wherein one slip ring is connected to the upper slip ring insert, wherein the other slip ring is connected to the lower slip ring insert; the steel ring is installed at the lower part of the slip ring body, and cooperates with the rear bearing and the oil seal respectively to achieve sealing.

[0008] In the sealing structure of the generator, an O-ring is provided at the fitting position between the rear bearing and the rear end cover for sealing.

[0009] In the above-mentioned sealing structure of the generator, the oil seal is a double-lip sealing ring.

[0010] In the above-mentioned sealing structure of the generator, the oil seal is made of HNBR material.

[0011] In the above-mentioned sealing structure of the generator, a first sealing gasket is arranged between the matching surface of the sleeve and the rear end cover, and / or a second sealing gasket is arranged between the matching surface of the regulator connecting port and the regulator of the generator.

[0012] In the above-mentioned sealing structure of the generator, the first sealing gasket and / or the second sealing gasket are / is made of closed-cell silicone sponge material.

[0013] The sealing structure of the above-mentioned generator, wherein the one-way valve includes a valve body, a valve core, a base and a reset member, the valve body is installed in the connecting structure, a valve hole is provided on the valve body, the top end of the valve hole is communicated with the air pipe interface, and the bottom end of the valve hole is communicated with the slip ring chamber; the base, the valve core and the reset member are all arranged in the valve hole, and the reset member is arranged between the base and the valve core; the valve core has an open position and a closed position relative to the valve hole.

[0014] In order to better achieve the above-mentioned purpose, the present invention also provides an underwater generator, which includes the sealing structure of the above-mentioned generator.

[0015] The technical effects of the present invention are:

[0016] The present invention can keep the slip ring chamber in a dry environment at all times, and the carbon brush can operate for a long time in this environment without short-circuiting. By providing a quick-connect structure and a one-way valve, an external air pipe can be connected for a long time or high-pressure gas can be flushed in at one time, so that a fully sealed positive pressure environment is formed in the slip ring chamber, which can resist the water pressure generated by deep water and work for a long time in a deep water environment.

[0017] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a generator according to an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of the structure of a generator according to another embodiment of the present invention;

[0020] Figure 3 A schematic diagram of an external gas pipe for a generator according to another embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of a sliding ring sealing sleeve according to an embodiment of the present invention;

[0022] Figure 5 for Figure 4 A cross-sectional view of

[0023] Figure 6 A schematic diagram of a slip ring structure according to an embodiment of the present invention;

[0024] Figure 7 for Figure 6 sectional view of .

[0025] Among them, the reference numerals

[0026] 1Front end cover

[0027] 11Front bearing

[0028] 2 Rear end cover

[0029] 21 rear bearing

[0030] 22O-ring

[0031] 3. Stator

[0032] 4 rotors

[0033] 41 Rotor shaft

[0034] 5 Slip rings

[0035] 51 Slip ring

[0036] 52 slip ring

[0037] 53 steel ring

[0038] 54 upper slip ring insert

[0039] 55 Lower Slide Ring Insert

[0040] 6 Sliding ring seal

[0041] 61 sets of body

[0042] 62 Check valve

[0043] 621 valve body

[0044] 622 valve core

[0045] 623 reset piece

[0046] 624 base

[0047] 625 valve hole

[0048] 63 quick connect structure

[0049] 64 Seals

[0050] 65 Regulator connection port

[0051] 66 trachea interface

[0052] 67 Oil Seal

[0053] 68 first gasket

[0054] 69 second seal

[0055] 7. Rectifier Bridge

[0056] 8 Regulator

[0057] 81 Carbon Brush

[0058] 9 rear guard

[0059] 10 Pulley

[0060] 100 High pressure air pump

[0061] 101 external air pipe DETAILED DESCRIPTION

[0062] The structural principle and working principle of the present invention are described in detail below in conjunction with the accompanying drawings:

[0063] See also Figure 1-Figure 3 , Figure 1 is a schematic diagram of the structure of a generator according to an embodiment of the present invention, Figure 2 is a schematic diagram of the structure of a generator according to another embodiment of the present invention, Figure 3The figure is a schematic diagram of an external air pipe of a generator according to another embodiment of the present invention. The underwater generator of the present invention comprises a front cover 1, a rear cover 2, a stator 3, a rotor 4, a rectifier bridge 7, a regulator 8, a rear shield 9, a pulley 10, a slip ring 5 and a sealing structure. The front cover 1 and the rear cover 2 together enclose an accommodation space; the sealing structure and the rear cover 2 together enclose a sealed slip ring chamber; the rear shield 9 is mounted on the rear cover 2, and the rectifier bridge 7 is mounted in the rear shield 9; the stator 3 is arranged in the accommodation space and connected to the rectifier bridge 7; the rotor 4 is arranged corresponding to the stator 3, and the rotor shaft 41 of the rotor 4 is supported on the front cover 1 and the rear cover 2 respectively through the front bearing 11 and the rear bearing 21; the front end of the rotor shaft 41 is equipped with a pulley 10; the carbon brush 81 of the regulator 8 is connected to the slip ring 5. When working, the underwater generator is normally installed on the vehicle, and the vehicle starts to run normally, driving the underwater generator to rotate. At this time, the rotor 4 that is powered on and rotates begins to cut the magnetic flux lines due to magnetization, and the stator 3 generates three-phase alternating current through electromagnetic induction, which is then rectified by the rectifier bridge 7 and regulated by the voltage regulator 8 to generate relatively stable direct current, and provide power to the battery or the vehicle load. Since the composition, structure, relative position relationship, connection relationship and function of other parts of the underwater generator are all relatively mature existing technologies, they will not be repeated here, and only the sealing structure of the present invention will be described in detail below.

[0064] See also Figure 4 and Figure 5 , Figure 4 This is a schematic structural diagram of a sliding ring sealing sleeve 6 according to an embodiment of the present invention. Figure 5 for Figure 4 The sealing structure of the generator of the present invention is arranged on the rear end cover 2 of the generator, and comprises: a slip ring sealing sleeve 6, comprising a sleeve body 61, a quick connection structure 63 and a one-way valve 62, the bottom end of the sleeve body 61 is sealed and connected with the rear end cover 2 of the generator, and the sleeve body 61 and the rear end cover 2 together enclose a sealed slip ring chamber; a regulator connection port 65 is arranged on one side of the sleeve body 61; a connection structure is arranged on the top of the sleeve body 61, and the one-way valve 62 is installed in the connection structure, the quick connection structure 63 is installed on the top of the sleeve body 61 corresponding to the one-way valve 62, and is sealed and connected with the connection structure, a sealing member 64 is arranged at the connection between the quick connection structure 63 and the connection structure, and an air pipe interface 66 is arranged on the quick connection structure 63, one end of the air pipe interface 66 is connected with the high-pressure air pump 100 through the external air pipe 101, and the other end of the air pipe interface 66 is connected with the slip ring chamber through the one-way valve 62.

[0065] The one-way valve 62 includes a valve body 621, a valve core 622, a base 624 and a reset member 623. The valve body 621 is installed in the connection structure. A valve hole 625 is provided on the valve body 621. The top end of the valve hole 625 is communicated with the air pipe interface 66, and the bottom end of the valve hole 625 is communicated with the slip ring chamber. The base 624, the valve core 622 and the reset member 623 are all arranged in the valve hole 625, and the reset member 623 is arranged between the base 624 and the valve core 622. The valve core 622 has an open position and a closed position relative to the valve hole 625.

[0066] See also Figure 2 and Figure 5 In this embodiment, an oil seal 67 may also be included, which is arranged in the rear bearing 21 chamber of the rear end cover 2 and seals with the slip ring 5 and the rear bearing 21 of the generator to prevent water from entering the slip ring chamber through the rear bearing 21. The oil seal 67 is preferably a double-lip seal ring, which is preferably made of HNBR material and is oil-resistant and water-resistant. Two O-rings 22 are provided at the mating point between the rear bearing 21 and the rear end cover 2 of this embodiment for sealing. A first sealing gasket 68 may also be provided between the mating surfaces of the sleeve 61 and the rear end cover 2, and / or a second sealing gasket 69 may be provided between the mating surfaces of the regulator connection port 65 and the regulator 8 of the generator, wherein the first sealing gasket 68 and / or the second sealing gasket 69 are preferably made of closed-cell silicone sponge material.

[0067] See also Figure 6 and Figure 7 , Figure 6 Schematic diagram of the structure of a slip ring 52 according to an embodiment of the present invention. Figure 7 for Figure 6 sectional view. In this embodiment, a steel ring 53 is also included. The slip ring 52 includes a slip ring body 51, a slip ring 52, an upper slip ring insert 54 and a lower slip ring insert 55. The slip ring 52 is installed in parallel on the upper part of the slip ring body 51, wherein one slip ring 52 is connected to the upper slip ring insert 54, wherein the other slip ring 52 is connected to the lower slip ring insert 55; the steel ring 53 is installed on the lower part of the slip ring body 51, and cooperates with the rear bearing 21 and the oil seal 67 to achieve sealing. The steel ring 53 cooperates with the oil seal 67 to form a seal, effectively preventing water from entering the slip ring chamber through the rear bearing 21, so that the slip ring chamber always maintains a dry environment, ensuring that the generator is not affected by the long-term operation in shallow water.

[0068] During installation, the quick-connect structure 63 and the one-way valve 62 are assembled onto the sleeve 61. The sleeve 61 is used to protect the carbon brush 81. The quick-connect structure 63 is used to quickly connect the slip ring sealing sleeve 6 with the high-pressure air pump 100 to fill the slip ring chamber with high-pressure gas to achieve deep water sealing function. The one-way valve 62 is used to maintain the pressure in the slip ring chamber after the high-pressure air pump 100 is shut down, or to maintain the pressure when the slip ring chamber is filled with high-pressure gas once. The steel ring 53 can be integrally injection molded with the slip ring body 51, and the slip ring 5 can be injection molded by embedding the slip ring body 51 into the upper slip ring insert 54, the lower slip ring insert 55 and the steel ring 53; the slip ring body 51 is used for support and assembly to ensure that the upper slip ring insert 54, the lower slip ring insert 55 and the steel ring 53 each complete their corresponding functions. The slip ring 5 is assembled on the rotor shaft 41, and then assembled with the rear end cover 2 through the support of the rear bearing 21 in the bearing chamber of the rear end cover 2 (an O-ring 22 is installed between the mounting surface of the rear end cover 2 and the rear bearing 21), and cooperates with the carbon brush 81 of the regulator 8 to introduce current into the excitation winding of the rotor 4 to generate a magnetic field; the slip ring 52 is used for the lead between the current of the regulator 8 and the rotor 4; the steel ring 53 is used to form a seal between the oil seal 67 and the rear bearing 21 and the slip ring 5. At this time, the oil seal 67, the steel ring 53 and the rear bearing 21 are assembled together to achieve the sealing between the bearing chamber of the rear end cover 2 and the rotor shaft 41 and the rear bearing 21; after the rotor shaft 41 equipped with the slip ring 5 extends to the rear end of the rear end cover 2, the slip ring sealing sleeve 6 is assembled on the rear end cover 2 in cooperation with the first sealing gasket 68, and then the brush end of the regulator 8 is assembled to the regulator connection port 65 in cooperation with the second sealing gasket 69. After the assembly is completed, a completely enclosed sealing structure is formed to achieve a full sealing function.

[0069] in, Figure 1 The embodiment shown can operate for a long time in shallow water environment. Figure 2 and Figure 3 The embodiment shown is suitable for long-term operation in deep water environment; Figure 2 The embodiment shown can be intermittently connected to the high-pressure air pump 100 to intermittently introduce high-pressure gas into the sealing structure. The one-way valve 62 can play a role in fault tolerance and pressure maintenance. The one-way conduction effect of the one-way valve 62 enables the high-pressure gas to be sealed in the sealing structure to maintain high pressure. If the air pressure drops after working for a period of time, the high-pressure air pump 100 can be connected again to fill with high-pressure gas, which can make the internal air pressure of the generator higher than the highest air pressure of the external environment for a long time, thereby ensuring that the generator can work in a deep water environment. Figure 3In the embodiment shown, the quick-connect structure 63 can be connected to the high-pressure air pump 100 and continuously connected to the external air pipe 101, and high-pressure gas is continuously introduced into the sealing structure, so that the internal air pressure of the generator is higher than the maximum air pressure of the external environment for a long time, ensuring that the generator can work for a long time in a deep-water environment. The quick-connect structure 63 can be connected to the high-pressure air pump 100 matched with the engine or a high-pressure air pump 100 equipped separately, so as to achieve intermittent or continuous introduction of high-pressure gas. After the quick-connect structure 63 is connected to the external air pipe 101, the high-pressure air pump 100 continuously introduces high-pressure gas into the sealing structure. When the high-pressure air pump 100 fails to work due to an emergency, the one-way valve 62 will play a role in maintaining pressure, so that the internal air pressure of the generator can be higher than the maximum air pressure of the external environment for a long time, so that the generator can work for a long time in a deep-water environment.

[0070] The sealing structure of the present invention forms a fully sealed structure through the slip ring sealing sleeve 6, the slip ring part 5 and the oil seal 67 set at the slip ring 52 and the bearing; the sealing steel ring 53 of the slip ring part 5 cooperates with the oil seal 67 to form a sealing structure, which solves the problem of poor bearing sealing, prevents water from entering from the matching point between the rear bearing 21 and the rear end cover 2, keeps the slip ring chamber dry, and enables the generator to operate underwater for a long time. The slip ring sealing sleeve 6 can be directly connected to the high-pressure air pump 100 through the quick-connect structure 63 and the one-way valve 62 through the external air pipe 101 for continuous pressurization or single injection of high-pressure gas, so that a stable high-pressure environment is formed in the slip ring chamber, and the air pressure in the slip ring chamber is kept higher than the highest air pressure of the external environment, so that the generator can work in a deep water environment for a long time.

[0071] The present invention can keep the slip ring chamber in a dry environment at all times, and the carbon brush 81 can operate for a long time in this environment without short-circuiting. Through the quick-connect structure 63 and the one-way valve 62, the external air pipe 101 can be connected for a long time or high-pressure gas can be flushed in at one time, so that a fully sealed positive pressure environment is formed in the slip ring chamber, which can resist the water pressure generated by deep water and work for a long time in a deep water environment.

[0072] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A sealing structure of a generator, arranged on a rear end cover (2) of the generator, characterized in that: include: A slip ring sealing sleeve (6) comprises a sleeve body (61), a quick-connect structure (63) and a one-way valve (62); the bottom end of the sleeve body (61) is sealedly connected to the rear end cover (2) of the generator, and the sleeve body (61) and the rear end cover (2) together enclose a sealed slip ring chamber; a regulator connection port (65) is provided on one side of the sleeve body (61); a connection structure is provided at the top end of the sleeve body (61), the one-way valve (62) is installed in the connection structure, the quick-connect structure (63) is installed at the top end of the sleeve body (61) corresponding to the one-way valve (62), and is sealedly connected to the connection structure; an air pipe interface (66) is provided on the quick-connect structure (63), one end of the air pipe interface (66) is connected to a high-pressure air pump (100), and the other end of the air pipe interface (66) is communicated with the slip ring chamber through the one-way valve (62).

2. The sealing structure of the generator according to claim 1, characterized in that: It also includes an oil seal (67) which is arranged in the rear bearing chamber of the rear end cover (2) and cooperates with the slip ring (5) and the rear bearing (21) of the generator to seal so as to prevent water from entering the slip ring chamber through the rear bearing (21).

3. The sealing structure of the generator according to claim 2, characterized in that: It also includes a steel ring (53). The slip ring component (5) includes a slip ring body (51), a slip ring (52), an upper slip ring insert (54) and a lower slip ring insert (55). The slip rings (52) are installed in parallel on the upper part of the slip ring body (51), wherein one slip ring (52) is connected to the upper slip ring insert (54), and wherein the other slip ring (52) is connected to the lower slip ring insert (55); the steel ring (53) is installed on the lower part of the slip ring body (51), and cooperates with the rear bearing (21) and the oil seal (67) to achieve sealing.

4. The sealing structure of the generator according to claim 2 or 3, characterized in that: An O-ring (22) is provided at the fitting position between the rear bearing (21) and the rear end cover (2) for sealing.

5. The sealing structure of the generator according to claim 2 or 3, characterized in that: The oil seal (67) is a double-lip seal ring.

6. The sealing structure of the generator according to claim 5, characterized in that: The oil seal (67) is made of HNBR material.

7. The sealing structure of the generator according to claim 1, 2 or 3, characterized in that: A first sealing gasket (68) is provided between the mating surfaces of the sleeve (61) and the rear end cover (2), and / or a second sealing gasket (69) is provided between the mating surface of the regulator connection port (65) and the regulator of the generator.

8. The sealing structure of the generator according to claim 7, characterized in that: The first sealing pad (68) and / or the second sealing pad (69) are made of closed-cell silicone sponge material.

9. The sealing structure of the generator according to claim 1, 2 or 3, characterized in that: The one-way valve (62) comprises a valve body (621), a valve core (622), a base (624) and a reset member (623); the valve body (621) is installed in the connection structure; a valve hole (625) is provided on the valve body (621); the top end of the valve hole (625) is communicated with the air pipe interface (66); the bottom end of the valve hole (625) is communicated with the slip ring chamber; the base (624), the valve core (622) and the reset member (623) are all arranged in the valve hole (625); the reset member (623) is arranged between the base (624) and the valve core (622); the valve core (622) has an open position and a closed position relative to the valve hole (625).

10. An underwater generator, characterized in that: A sealing structure for a generator comprising any one of claims 1-9.

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