Rotation rectifier diode for nuclear power exciter to tolerate shearing force of rotor shaft

Abstract

The utility model discloses a rotary rectifier diode for a nuclear power exciter to tolerate shearing force of a rotor shaft, which comprises a base, a boss is arranged on the upper wall of the base, and a diode body is arranged on the upper wall of the boss. The upper end and the lower end of the rotary rectifier diode are rigidly connected, axial stress is effectively resisted, mechanical deformation of the rotary rectifier diode is avoided, certain buffering capacity is provided through the belleville spring and the two sets of flat gaskets, meanwhile, the connector and the inner electrode are in sliding connection, and gaps are formed in the opposite positions in the axial direction. The above arrangement can absorb infinitesimal displacement caused by external vibration or thermal expansion, the positioning ring between the base and the diode body ensures the concentricity of the whole structure, and the diode body and the inner electrode are tightly pressed and abutted through the belleville spring, so that the connection between the diode body and the inner electrode is tight, and the service life of the diode is prolonged. And the outer part is supported by multiple points of the inner shell and the outer shell, so that mechanical stress can be dispersed, and the overall deformation resistance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to nuclear power exciter rotation rectification component technical field especially relates to be used for nuclear power exciter rotation rectification diode that resists rotor shaft shearing force. BACKGROUND

[0002] Nuclear power exciter rotation rectification component is used to convert the alternating current generated by exciter into direct current to supply rotor winding, because exciter rotor winding, rotation rectification component, generator rotor winding are on the same rotating shaft, so the rotation rectification component is often in high speed, high electromagnetic stress, high temperature, high humidity, high strength vibration, strong current impact and other complex working environment conditions.

[0003] The rotation rectification diode in traditional rectification component includes main part, one end of the main part is screwed on the radiator, rigid connection, the other end uses flexible lead, soft connection, so the rotation rectification diode often deforms mechanically due to axial stress, which leads to the decline of electrical performance, thereby restricting the reliability and service life of rotation rectification component, therefore, it is necessary to improve and optimize the rotation rectification diode structure for nuclear power exciter to resist rotor shaft shearing force to solve the above problems. SUMMARY

[0004] The utility model discloses a rotation rectification diode that resists rotor shaft shearing force for nuclear power exciter to solve the problems existing in the prior art.

[0005] In order to realize the above-mentioned purpose, the utility model discloses the following technical scheme: the rotation rectification diode that resists rotor shaft shearing force for nuclear power exciter, including base, the base upper wall is provided with the boss, the boss upper wall is provided with diode body, the boss outer wall is equipped with the positioning ring, diode body outer wall and the inboard wall of positioning ring are fixedly connected, diode body is positioned with base through positioning ring, inner electrode, the inner electrode sets up on diode body upper wall, and the one end of inner electrode towards diode body is provided with flange, gland, the gland is equipped in inner electrode outer wall, buffer structure, the buffer structure includes the butterfly spring, second flat pad, mica sheet and first flat pad that distribute in sequence up and down, the butterfly spring, second flat pad, mica sheet and first flat pad all are equipped in inner electrode outer wall and all are located between flange and gland, shell, the shell sets up on base upper wall, and inner electrode, buffer structure and gland all are wrapped through shell, ceramic cover, the ceramic cover is fixedly connected on the inboard wall of shell, and the one end of inner electrode away from base penetrates ceramic cover and extends to ceramic cover top, and the connecting head is fixedly connected on the inboard wall of ceramic cover.

[0006] Further description of the above technical scheme:

[0007] The shell is composed of an inner shell and an outer shell, the inner shell is fixedly connected to the upper wall of the base, the circumferential outer wall of the positioning ring and the buffer structure are all in abutment with the inner side wall of the inner shell, and the outer shell is fixedly connected between the base and the ceramic cover and wraps the outer side of the inner shell.

[0008] As a further description of the above technical solution:

[0009] The outer shell is composed of an upper cover and a lower cover, and the upper cover and the lower cover are fixedly connected in sequence between the ceramic cover and the base in a top-down distribution.

[0010] As a further description of the above technical solution:

[0011] The lower wall of the ceramic cover is provided with a ring groove, and the end of the upper cover away from the lower cover is fixedly connected with the inner side wall of the ring groove.

[0012] As a further description of the above technical solution:

[0013] The upper and lower ends of the connecting head are respectively provided with a first sink groove and a second sink groove.

[0014] As a further description of the above technical solution:

[0015] The end of the inner electrode extending to the ceramic cover is slidably connected with the inner side wall of the second sink groove.

[0016] As a further description of the above technical solution:

[0017] The end of the inner electrode extending to the ceramic cover is slidably connected with the inner side wall of the second sink groove.

[0018] The utility model has the following beneficial effects:

[0019] 1. Compared with the prior art, the rotating rectifier diode for nuclear power excitation magnet rotor shaft shear force resistance of the utility model, the base is used for connecting with the radiator, the connecting head is used for connecting with the rotor winding, and the upper and lower ends are connected through rigidity, which effectively resists axial stress, thereby avoiding mechanical deformation of the rotating rectifier diode, maintaining electrical performance, and thereby improving the reliability and service life of the rotating rectifier assembly.

[0020] 2. Compared with the prior art, the rotating rectifier diode for nuclear power excitation magnet rotor shaft shear force resistance of the utility model provides certain buffering capacity through the butterfly spring and the two groups of flat pads, and the connecting head and the inner electrode are slidably connected and have a gap axially opposite, the above-mentioned setting can absorb the slight displacement caused by external vibration or thermal expansion, thereby reducing the risk of axial deformation, which helps to meet the safety requirements of axial deformation. The positioning ring between the base and the diode body ensures the concentricity of the overall structure, which helps to limit the displacement deviation in the axial direction.

[0021] 3、Compared with the prior art, the rotating rectifier diode for nuclear power excitation motor to resist the shear force of rotor shaft, the diode body and the inner electrode are pressed and abutted through the butterfly spring, so that the connection between the diode body and the inner electrode is relatively close, the outside is supported by the inner shell and the outer shell in multiple points, mechanical stress can be dispersed, and the overall deformation resistance is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The overall structure schematic diagram of the rotating rectifier diode for nuclear power excitation motor to resist the shear force of rotor shaft is provided for the utility model;

[0023] Figure 2 The overall structure schematic diagram of the rotating rectifier diode for nuclear power excitation motor to resist the shear force of rotor shaft is provided for the utility model;

[0024] Figure 3 The rotating rectifier diode for nuclear power excitation motor to resist the shear force of rotor shaft is provided for the utility model; Figure 2 The local enlarged view of A in the middle;

[0025] Figure 4 The rotating rectifier diode for nuclear power excitation motor to resist the shear force of rotor shaft is provided for the utility model; Figure 2 The local enlarged view of B in the middle.

[0026] Figure 5 The internal structure partial section view of the connecting head of the rotating rectifier diode for nuclear power excitation motor to resist the shear force of rotor shaft is provided for the utility model.

[0027] LEGEND:

[0028] 1, base; 2, lower cover; 3, upper cover; 4, ceramic cover; 401, ring groove; 5, connecting head; 501, first sink; 502, second sink; 6, positioning ring; 7, diode body; 8, inner electrode; 9, first flat pad; 10, mica sheet; 11, second flat pad; 12, butterfly spring; 13, gland; 14, inner shell. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] REFERENCE Figures 1 to 5The utility model provides a rotation rectification diode for nuclear power excitation magnet resistance rotor shaft shearing force: including base 1, inner electrode 8, gland 13, buffer structure, shell, ceramic cover 4 and connecting head 5, the upper wall of base 1 is provided with boss, the upper wall of boss is provided with diode body 7, the outer wall of boss is equipped with locating ring 6, diode body 7 outer wall is fixedly connected with the inner side wall of locating ring 6, diode body 7 is positioned with base 1 through locating ring 6, inner electrode 8 sets up on the upper wall of diode body 7, and the one end of inner electrode 8 towards diode body 7 is provided with flange, and gland 13 is equipped in the outer wall of inner electrode 8, the upper and lower ends of connecting head 5 are provided with first sink 501 and second sink 502 respectively, base 1 is used to connect with radiator, adopts bolt and pressboard to fix, connecting head 5 is used to connect with rotor winding, and the bolt head protruding on rotor winding is inserted into first sink 501 to realize fixation, and the upper and lower ends are all through rigid connection, effectively resist axial stress, to avoid that rotation rectification diode occurs mechanical deformation, keep electrical performance, to improve the reliability and service life of rotation rectification assembly, and the locating ring 6 between base 1 and diode body 7 ensures the concentricity of overall structure, helps to limit displacement deviation in axial direction,

[0031] In order to realize buffering capacity, the buffer structure includes the butterfly spring 12, the second flat pad 11, the mica sheet 10 and the first flat pad 9 which are sequentially distributed in up and down, the butterfly spring 12, the second flat pad 11, the mica sheet 10 and the first flat pad 9 are all sleeved on the outer wall of the inner electrode 8 and are all located between the flange and the gland 13, the butterfly spring 12, the first flat pad 9 and the second flat pad 11 can provide a certain axial buffering capacity, and the diode body 7 and the inner electrode 8 are pressed and abutted through the butterfly spring 12, so that the connection between the diode body 7 and the inner electrode 8 is relatively close.

[0032] In order to realize multi-point support, the shell is arranged on the upper wall of the base 1, the inner electrode 8, the buffer structure and the gland 13 are all wrapped by the shell, the shell is composed of an inner shell 14 and an outer shell, the inner shell 14 is fixedly connected to the upper wall of the base 1, the circumferential outer wall of the locating ring 6 and the buffer structure all abut against the inner side wall of the inner shell 14, the outer shell is fixedly connected between the base 1 and the ceramic cover 4 and wraps the outer side of the inner shell 14, the outer shell is composed of an upper cover 3 and a lower cover 2, the upper cover 3 and the lower cover 2 are sequentially fixedly connected between the ceramic cover 4 and the base 1 in up and down distribution, the ceramic cover 4 is fixedly connected to the upper wall of the shell, the end of the inner electrode 8 away from the base 1 penetrates through the ceramic cover 4 and extends above the ceramic cover 4, the lower wall of the ceramic cover 4 is provided with a ring groove 401, the end of the upper cover 3 away from the lower cover 2 is fixedly connected to the inner side wall of the ring groove 401, the diode body 7 is multi-point supported by the inner shell 14 and the outer shell, can disperse mechanical stress, thereby improving the overall deformation resistance;

[0033] In order to meet the requirement of axial deformation safety, the connecting head 5 is fixedly connected to the wall of the ceramic cover 4, the inner electrode 8 is slidably connected to the inner side wall of the second sink 502 at the end of the ceramic cover 4, and a gap is arranged between the end of the inner electrode 8 extending to the ceramic cover 4 and the upper wall of the inner side of the second sink 502, and a gap is arranged between the connecting head 5 and the inner electrode 8 in the axial relative position, which can absorb the slight displacement caused by external vibration or thermal expansion, thereby reducing the risk of axial deformation, which helps to meet the requirement of axial deformation safety.

[0034] Working principle: the base 1 is used for connecting with the heat sink, and is fixed by bolts and pressing plates, the connecting head 5 is used for connecting with the rotor winding, and is fixed by inserting the bolt head protruding on the winding into the first sink 501, and the upper and lower ends are rigidly connected, effectively resisting the axial stress, thereby avoiding the mechanical deformation of the rotating rectifier diode, maintaining the electrical performance, thereby improving the reliability and service life of the rotating rectifier assembly, the positioning ring 6 between the base 1 and the diode body 7 ensures the concentricity of the overall structure, which helps to limit the displacement deviation in the axial direction; the butterfly spring 12, the first flat gasket 9 and the second flat gasket 11 can provide certain axial buffering capacity, and the diode body 7 and the inner electrode 8 are pressed and tightly contacted by the butterfly spring 12, so that the connection between the diode body 7 and the inner electrode 8 is relatively close; the diode body 7 is multi-point supported by the inner shell 14 and the outer shell, which can disperse mechanical stress, thereby improving the overall deformation resistance, the connecting head 5 and the inner electrode 8 are slidably connected and a gap is arranged in the axial relative position, which can absorb the slight displacement caused by external vibration or thermal expansion, thereby reducing the risk of axial deformation, which helps to meet the requirement of axial deformation safety.

[0035] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included in the protection scope of the present application.

Claims

1. A rotating commutated diode for nuclear power field exciter to withstand rotor shaft shear force, characterized in that: Including base (1), the base (1) upper wall is provided with a boss, the boss upper wall is provided with a diode body (7), the boss outer wall is provided with a positioning ring (6), the diode body (7) outer wall and the positioning ring (6) inner side wall are fixedly connected, the diode body (7) is positioned with the base (1) through the positioning ring (6); The inner electrode (8) is arranged on the upper wall of the diode body (7), and the inner electrode (8) is provided with a flange at one end of the diode body (7); The gland (13) is sleeved on the outer wall of the inner electrode (8); The buffer structure includes a butterfly spring (12), a second flat pad (11), a mica sheet (10) and a first flat pad (9) arranged in sequence from top to bottom, the butterfly spring (12), the second flat pad (11), the mica sheet (10) and the first flat pad (9) are all sleeved on the outer wall of the inner electrode (8) and are all located between the flange and the gland (13); The shell is arranged on the upper wall of the base (1), and the inner electrode (8), the buffer structure and the gland (13) are all wrapped by the shell; The ceramic cover (4) is fixedly connected to the upper wall of the shell, one end of the inner electrode (8) away from the base (1) penetrates through the ceramic cover (4) and extends above the ceramic cover (4); The connecting head (5) is fixedly connected to the upper wall of the ceramic cover (4).

2. The rotating commutated diode for nuclear generator field resistance to rotor shaft shear forces according to claim 1, characterized in that: The shell is composed of an inner shell (14) and an outer shell, the inner shell (14) is fixedly connected to the upper wall of the base (1), the circumferential outer wall of the positioning ring (6) and the buffer structure are all in abutment with the inner side wall of the inner shell (14), and the outer shell is fixedly connected between the base (1) and the ceramic cover (4) and wrapped outside the inner shell (14).

3. The rotating commutated diode for nuclear generator field resistance to rotor shaft shear forces according to claim 2, characterized in that: The outer shell is composed of an upper cover (3) and a lower cover (2), the upper cover (3) and the lower cover (2) are fixedly connected in sequence between the ceramic cover (4) and the base (1) in a top-to-bottom distribution.

4. The rotating commutated diode for nuclear generator rotor shaft shear force resistance of claim 3, wherein: The lower wall of the ceramic cover (4) is provided with a ring groove (401), and one end of the upper cover (3) away from the lower cover (2) is fixedly connected with the inner side wall of the ring groove (401).

5. The rotating commutated diode for nuclear generator field resistance to rotor shaft shear forces according to claim 1, characterized by: The connecting head (5) is provided with a first sink (501) and a second sink (502) at the upper and lower ends respectively.

6. The rotating commutated diode for nuclear generator rotor shaft shear force resistance of claim 5, wherein: One end of the inner electrode (8) extending to the ceramic cover (4) is slidably connected with the inner side wall of the second sink (502).

7. The rotating commutated diode for nuclear generator field resistance to rotor shaft shear forces according to claim 5, characterized by: There is a gap between one end of the inner electrode (8) extending to the ceramic cover (4) and the inner side wall of the second sink (502).

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