Generator performance detection device

Abstract

The invention discloses a generator performance detection device, and belongs to the technical field of generator detection equipment. According to the generator performance detection device, the conductive member can conduct voltage and current signals for detection to the collector ring of the rotor so as to detect the electrical performance of the rotor winding, and the voltage and current signals between the excitation brush holder and the collector ring are isolated through the insulation brush holder and the insulation installation part. The insulation resistance of the rotor winding can be truly reflected, the accuracy of a detection result is improved, and the safety of workers and excitation equipment can be guaranteed; and meanwhile, the insulation brush holder and the excitation brush carrier are locked or unlocked through the brush holder locking piece, so that the insulation brush holder can be quickly disassembled and assembled, and the detection efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of generator detection equipment, and in particular to a generator performance detection device. Background Art

[0002] The excitation methods of large steam turbine generators are divided into static excitation and rotating rectifier excitation. The static excitation method is widely used due to its simple equipment maintenance, short shaft system, and fast excitation response speed.

[0003] The main components of the static excitation method are slip rings, brushes, and excitation busbars. The working principle is that the excitation busbar transfers the DC power generated by the AVR (voltage regulator) device to the brushes through the stationary components. The brushes are in friction contact with the slip rings that rotate with the rotor, and the DC power is transferred to the slip rings through the brushes. The slip rings are electrically connected to the generator rotor windings to pass DC power into the generator rotor windings. Under the high-speed rotation of the rotor, a rotating magnetic field is formed in the stator chamber.

[0004] During the minor overhaul of the power plant units, in order to detect the electrical performance of the generator rotor winding, it is necessary to check the main insulation, turn-to-turn insulation and electrical connection performance of the rotor winding. The inspection items include measuring the insulation resistance of the rotor winding in dynamic or static state, measuring the AC impedance and power loss in the chamber, the rotor RSO test, and the direct resistance test of the rotor winding.

[0005] There are three main approaches in the industry:

[0006] Method 1. Remove the flexible connection of the excitation brush holder or the excitation busbar, and then connect the test instrument to the collector ring to apply the test power to the rotor winding.

[0007] Method 2: The tester wears insulating gloves, holds the brush through the excitation brush holder and contacts the rotor collector ring, applies the test power to the brush, and conducts the test power to the rotor winding through the brush.

[0008] Method 3: Directly install a set of brushes on the excitation brush holder, apply the test power to the brushes, and conduct the test power to the rotor winding and the excitation power busbar through the brushes.

[0009] Among them, method 1 requires the removal of the excitation brush holder or soft connection, which takes a long time, and repeated disassembly and assembly will increase the stability of the electrical connection, which is not conducive to the safe operation of the equipment. Method 2 brings a greater risk of electric shock to the test personnel, especially during dynamic testing, when the test personnel touch the rotating parts with their bare hands, there is a very high risk of mechanical injury. Method 3, since the brushes and the excitation brush holder and the excitation power busbar are all electrically conductive, the insulation result of the test is the insulation resistance after the excitation power busbar and the rotor winding are connected in parallel, which cannot truly reflect the insulation resistance of the rotor winding. In addition, other components in the excitation power supply may be damaged during the test. Summary of the invention

[0010] The object of the present invention is to provide a generator performance detection device, which can not only improve the accuracy and detection efficiency of the detection results of the rotor winding electrical performance, but also ensure the safety of the staff and the excitation equipment.

[0011] In order to achieve the above objectives, the following technical solutions are provided:

[0012] A generator performance detection device, the generator includes an excitation brush holder and a rotor rotatably arranged on the excitation brush holder, a collector ring is sleeved on the outer side of the rotor, and the collector ring can rotate with the rotor; the generator performance detection device includes:

[0013] An insulating brush holder, wherein the insulating brush holder is provided with an insulating mounting portion for mounting a brush, and when the brush is mounted on the insulating mounting portion, one end of the brush can abut against the collector ring;

[0014] A brush holder locking piece, the brush holder locking piece is used to lock or unlock the insulating brush holder and the excitation brush holder;

[0015] A conductive member is fixed to the insulating brush holder and is used for being electrically connected to the brush.

[0016] As a preferred technical solution of the above-mentioned generator performance detection device, the generator performance detection device also includes an elastic member, and the elastic member is configured to apply a biasing force to the brush to make it approach the collector ring along the radial direction of the rotor.

[0017] As a preferred technical solution of the above-mentioned generator performance detection device, the generator performance detection device also includes at least one brush, at least one of the brushes is installed on the insulating mounting portion, one end of at least one of the brushes can abut against the collector ring, and at least one of the brushes is electrically connected to the conductive member.

[0018] As a preferred technical solution of the above-mentioned generator performance detection device, the brush is a carbon brush or a copper brush.

[0019] As a preferred technical solution of the above-mentioned generator performance detection device, the brush holder locking member includes:

[0020] A rotating shaft, the rotating shaft is rotatably disposed on the insulating brush holder, and along the radial direction of the rotor, the rotating shaft includes a first end and a second end, and the first end is closer to the rotor than the second end;

[0021] a first limiting portion and a second limiting portion, wherein the first limiting portion is detachably arranged at the first end, and the second limiting portion is fixedly arranged at the second end, and both the first limiting portion and the second limiting portion can rotate along the rotating shaft, so that the first limiting portion and the second limiting portion are respectively abutted against opposite sides of the excitation brush holder along the radial direction of the rotor, or the first limiting portion and the second limiting portion are separated from the excitation brush holder;

[0022] A handle is fixedly arranged at the second end.

[0023] As a preferred technical solution of the above generator performance detection device, the insulating brush holder is made of insulating material; and / or,

[0024] The handle is made of insulating material; and / or,

[0025] The second limiting portion is made of insulating material.

[0026] As a preferred technical solution of the above-mentioned generator performance detection device, the conductive member is provided with an electrical connection portion, and the electrical connection portion is extended outward from the conductive member.

[0027] As a preferred technical solution of the above-mentioned generator performance detection device, the insulating mounting portion includes mounting grooves arranged one-to-one corresponding to the brushes, the brushes can be inserted into the corresponding mounting grooves, and one end of the brush is located outside the corresponding mounting groove and is used to abut against the collector ring.

[0028] As an optimal technical solution of the above-mentioned generator performance detection device, the generator performance detection device also includes a conductive locking piece, the brush is provided with a cable, one end of the cable is fixedly connected to the brush, and the other end is fixedly connected to the conductive piece through the conductive locking piece.

[0029] As a preferred technical solution of the above-mentioned generator performance detection device, the insulating brush holder is also provided with an insulating limit portion, and the insulating limit portion can abut against the excitation brush holder to prevent the insulating brush holder from moving relative to the excitation brush holder.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The generator performance detection device of the present invention has a conductive part that can conduct the voltage and current signals used for detection to the collector ring of the rotor, thereby detecting the electrical performance of the rotor winding, and isolating the voltage and current signals between the excitation brush holder and the collector ring through the insulating brush holder and the insulating mounting portion, which can not only truly reflect the insulation resistance of the rotor winding and improve the accuracy of the detection results, but also ensure the safety of the staff and excitation equipment; at the same time, the insulating brush holder and the excitation brush holder are locked or unlocked through the brush holder locking piece, which is convenient for quick disassembly and assembly of the insulating brush holder, which is beneficial to improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the structure of a generator in an embodiment of the present invention;

[0033] Figure 2 It is a first structural schematic diagram of a generator performance detection device in an embodiment of the present invention;

[0034] Figure 3 is a second structural schematic diagram of the generator performance detection device in an embodiment of the present invention;

[0035] Figure 4 A third structural schematic diagram of the generator performance detection device in an embodiment of the present invention;

[0036] Figure 5 It is a partial schematic diagram of a generator performance detection device in an embodiment of the present invention.

[0037] Reference numerals:

[0038] 100. Generator; 101. Excitation brush holder; 1011. Brush holder slot; 102. Collector ring; 1. Insulating brush holder; 11. Insulating mounting portion; 12. Limiting portion; 13. Guide cylinder; 2. Brush holder locking member; 21. Rotating shaft; 22. First limiting portion; 23. Second limiting portion; 24. Handle; 3. Conductive member; 31. Electrical connecting portion; 4. Brush; 41. Cable; 5. Conductive locking member; 6. Elastic member. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0042] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0043] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0045] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0046] like Figure 1-5 As shown, this embodiment provides a generator performance detection device for detecting the electrical performance of the rotor winding of the generator 100.

[0047] The generator 100 includes an excitation brush holder 101 and a rotor rotatably mounted on the excitation brush holder 101. A slip ring 102 is sleeved on the outer side of the rotor, and the slip ring 102 can rotate with the rotor. It is understood that the slip ring 102 is electrically connected to the rotor winding for testing.

[0048] The generator performance detection device includes an insulating brush holder 1, a brush holder locking piece 2 and a conductive piece 3. The insulating brush holder 1 is provided with an insulating mounting portion 11 for mounting a brush 4. When the brush 4 is mounted on the insulating mounting portion 11, one end of the brush 4 can abut against the collector ring 102; the brush holder locking piece 2 is used to lock or unlock the insulating brush holder 1 and the excitation brush holder 101; the conductive piece 3 is fixed to the insulating brush holder 1, and the conductive piece 3 is used to be electrically connected to the brush 4.

[0049] It should be noted that the excitation brush holder 101 of the generator 100 has a brush holder slot 1011. When the generator 100 is working normally, the brush holder provided with the generator 100 is installed in the brush holder slot 1011. When the electrical performance of the rotor winding of the generator 100 is tested, the insulating brush holder 1 of this embodiment can be installed in the brush holder slot 1011.

[0050] In the generator performance detection device of this embodiment, the conductive member 3 can conduct the voltage and current signals for detection to the collector ring 102 electrically connected to the rotor winding, and then pass direct current to the rotor winding through the collector ring 102 to detect the electrical performance of the rotor winding, and isolate the voltage and current signals between the excitation brush holder 101 and the collector ring 102 through the insulating brush holder 1 and the insulating mounting portion 11, which can not only truly reflect the insulation resistance of the rotor winding and improve the accuracy of the detection results, but also ensure the safety of the staff and the excitation equipment; at the same time, the insulating brush holder 1 and the excitation brush holder 101 are locked or unlocked by the brush holder locking member 2, which is convenient for quick disassembly and assembly of the insulating brush holder 1, which is beneficial to improving the detection efficiency.

[0051] In this embodiment, the generator performance detection device further includes a plurality of brushes 4, which are all mounted on the insulating mounting portion 11, one end of each of the plurality of brushes 4 can abut against the collector ring 102, and each of the plurality of brushes 4 is electrically connected to the conductive member 3. By providing a plurality of brushes 4, it is possible to avoid that one of the brushes 4 has a poor contact and causes a circuit breaker to affect the detection. Of course, in other embodiments, only one brush 4 may be provided, which is not limited here.

[0052] It should be noted that, in this embodiment, the generator performance detection device is separately configured with a brush 4 specifically for detection, so there is no need to disassemble the brush 4 of the generator 100, which is beneficial to further improve the detection efficiency and avoid disassembling the brush 4 of the generator 100, which affects the installation stability of the brush 4.

[0053] Of course, in other embodiments, the brush 4 provided by the generator 100 can also be used. When performing inspection, the brush 4 provided by the generator 100 is removed from the brush holder provided by the generator 100, and the removed brush 4 is installed to the insulating mounting portion 11 of the insulating brush holder 1. There is no need to separately set up a brush 4 specifically for inspection, thereby reducing the inspection cost.

[0054] Optionally, the brush 4 is a carbon brush. Carbon brushes have the advantages of good electrical conductivity and low cost. Of course, in other embodiments, the brush 4 can also be a copper brush. The electrical conductivity and wear resistance of the copper brush are better than those of the carbon brush, but the cost is higher.

[0055] Optionally, the conductive member 3 is provided with an electrical connection portion 31, and the electrical connection portion 31 is extended outward from the conductive member 3, thereby facilitating the connection of the test instrument and facilitating the operation.

[0056] Specifically, the electrical connection portion 31 is a protrusion provided on the conductive member 3 , and a wiring structure such as a wire clamp of a testing instrument can be directly clamped on the protrusion to facilitate wiring.

[0057] Specifically, the conductive member 3 is a metal wiring bar, which facilitates the electrical connection between the cable 41 and the conductive member 3. Exemplarily, the conductive member 3 is a copper bar, which has good conductivity and is conducive to improving the accuracy of the detection result.

[0058] Optionally, the generator performance detection device further includes a conductive locking member 5, the brush 4 is provided with a cable 41, one end of the cable 41 is fixedly connected to the brush 4, and the other end is locked or unlocked with the conductive member 3 through the conductive locking member 5. The conductive locking member 5 can improve the connection stability between the cable 41 and the conductive member 3, thereby reducing the deviation during the RSO test and DC resistance test of the generator 100 rotor, and avoiding the problem of poor contact of the detection conductive circuit due to loose cable 41, resulting in unqualified detection results.

[0059] Specifically, the conductive locking member 5 is a screw, which is threadedly connected to the conductive member 3, and the cable 41 is pressed and fixed to the conductive member 3 through the head of the screw. The screw has the advantages of simple structure, easy operation and low cost. Of course, in other embodiments, the conductive locking member 5 can also be a conductive clamp, so that the cable 41 and the conductive member 3 are clamped by the conductive clamp, which can also improve the connection stability between the cable 41 and the conductive member 3.

[0060] Optionally, the insulating brush holder 1 is further provided with an insulating stopper 12, which can abut against the excitation brush holder 101 to prevent the insulating brush holder 1 from moving relative to the excitation brush holder 101. This arrangement can improve the installation stability of the insulating brush holder 1, thereby improving the installation stability of the brush 4, and has the effect of improving the accuracy of the test results.

[0061] Specifically, the insulating limit portion 12 is an inclined surface arranged on both sides of the insulating brush holder 1, which abuts against the inner wall of the brush holder groove 1011 of the excitation brush holder 101, and then the insulating brush holder 1 is locked to the excitation brush holder 101 through the brush holder locking piece 2, thereby preventing the insulating brush holder 1 from moving relative to the excitation brush holder 101.

[0062] Optionally, the insulating mounting portion 11 includes mounting grooves corresponding to the brushes 4, the brushes 4 can be inserted into the corresponding mounting grooves, and one end of the brush 4 is located outside the corresponding mounting groove and is used to abut against the collector ring 102. Such a configuration facilitates the installation of the brushes 4 and is conducive to improving the detection efficiency.

[0063] It can be understood that when multiple brushes 4 are provided, multiple mounting grooves are also provided, and one brush 4 is inserted into one mounting groove.

[0064] Specifically, the insulating mounting portion 11 is a brush box fixedly mounted on one side of the insulating brush holder 1 , and the brush box includes a plurality of the aforementioned mounting grooves, which are sequentially arranged along the axial direction of the rotor.

[0065] It should be noted that, in this embodiment, the structures of the insulating brush holder 1 and the insulating mounting portion 11 are similar to the structures of the brush holder provided in the generator 100 and the brush box provided on the brush holder for mounting the brush 4, which is beneficial to reducing the development cost of the generator performance detection device.

[0066] Optionally, the generator performance detection device also includes an elastic member 6, which is configured to apply a biasing force to the brush 4 so that it approaches the collector ring 102 along the radial direction of the rotor, and then presses the brush 4 to the surface of the collector ring 102 through the elastic member 6, so as to better reduce the contact resistance and improve the test accuracy of the rotor RSO test and DC resistance.

[0067] Exemplarily, the elastic member 6 is a constant pressure spring, so that the biasing force applied by the elastic member 6 to the brush 4 to make it close to the collector ring 102 along the radial direction of the rotor can be constant, ensuring stable contact between the brush 4 and the collector ring 102, which is beneficial to further improve the accuracy of the detection result.

[0068] Specifically, the mounting groove is a through groove, the brush 4 is inserted into the mounting groove, and both ends of the brush 4 extend out of the mounting groove, and the constant pressure spring abuts against one end of the brush 4 to make the other end of the brush 4 abut against the collector ring 102 .

[0069] Of course, the elastic member 6 can also be other springs, or other structural members that can generate elastic force, which is not limited here.

[0070] Optionally, the brush holder locking member 2 includes a rotating shaft 21, a first limiting portion 22, a second limiting portion 23 and a handle 24. The rotating shaft 21 is rotatably disposed on the insulating brush holder 1. Along the radial direction of the rotor, the rotating shaft 21 includes a first end and a second end, and the first end is closer to the rotor than the second end; the first limiting portion 22 is detachably disposed at the first end, and the second limiting portion 23 is fixedly disposed at the second end. Both the first limiting portion 22 and the second limiting portion 23 can rotate with the rotating shaft 21, so that the first limiting portion 22 and the second limiting portion 23 respectively abut against the opposite sides of the excitation brush holder 101 along the radial direction of the rotor, or the first limiting portion 22 and the second limiting portion 23 are separated from the excitation brush holder 101; the handle 24 is fixedly disposed at the second end. With such a configuration, when a worker holds the handle 24 and rotates the rotating shaft 21, the first limiting portion 22 and the second limiting portion 23 can be respectively abutted against opposite sides of the excitation brush holder 101 along the radial direction of the rotor, so that the excitation brush holder 101 is clamped by the first limiting portion 22 and the second limiting portion 23, thereby locking the insulating brush holder 1 with the excitation brush holder 101. The worker can also hold the handle 24 and rotate the rotating shaft 21 to separate the first limiting portion 22 and the second limiting portion 23 from the excitation brush holder 101, thereby releasing the lock, which is convenient for disassembly and assembly of the insulating brush holder 1 and is conducive to improving detection efficiency.

[0071] It should be noted that the first limiting portion 22 is detachably provided at the first end to facilitate assembly of the rotating shaft 21 and the insulating brush holder 1. Specifically, the insulating brush holder 1 is provided with a through hole, and one end of the rotating shaft 21 passes through the through hole and is threadedly connected to the first limiting portion 22.

[0072] Specifically, the second limiting portion 23 is a rectangular plate, which can play a protective role and ensure the safety of the staff.

[0073] Specifically, the first limiting portion 22 is a rectangular locking block, and the excitation brush holder 101 is provided with a rectangular groove corresponding to the first limiting portion 22. When the rotating shaft 21 is rotated so that the length direction of the rectangular locking block is parallel to the length direction of the rectangular groove, the rectangular locking block can pass through the rectangular groove so that the rectangular locking block is located on the side of the excitation brush holder 101 close to the rotor, and then the rotating shaft 21 is continued to be rotated so that the length direction of the rectangular locking block is perpendicular to the length direction of the rectangular groove. At this time, the rectangular locking block can no longer be retracted into the rectangular groove, so that the rectangular locking block can be locked on the side of the excitation brush holder 101 close to the rotor, that is, the rectangular locking block and the rectangular plate are respectively abutted against the opposite sides of the excitation brush holder 101 along the radial direction of the rotor.

[0074] Optionally, the generator performance detection device further includes a rotating support, and the rotating shaft 21 is rotatably connected to the insulating brush holder 1 via the rotating support, thereby improving the smoothness of the rotation of the rotating shaft 21 and improving the operating convenience of the generator performance detection device.

[0075] Exemplarily, the rotating support is a bearing. Specifically, two bearings are provided, and the two bearings are respectively located at the two ends of the rotating shaft 21. Further, guide cylinders 13 are fixedly provided on both sides of the insulating brush holder 1, and the two bearings are respectively installed in the two guide cylinders 13.

[0076] Optionally, the insulating brush holder 1 is made of insulating material, which is beneficial to improving the insulating effect of the insulating brush holder 1, thereby improving the accuracy of the detection result. Of course, in other embodiments, the insulating brush holder 1 can also be provided with an insulating layer on its outer surface to achieve the insulating effect.

[0077] Optionally, the insulating brush holder 1 and the insulating mounting portion 11 are integrally formed, which is easy to manufacture.

[0078] Specifically, the insulating brush holder 1, the guide cylinder 13 and the insulating mounting portion 11 are integrally formed by epoxy resin casting.

[0079] Optionally, the handle 24 is made of insulating material, thereby preventing the worker from getting an electric shock when holding the handle 24 , thereby ensuring the worker's safety.

[0080] Optionally, the second limiting portion 23 is made of insulating material. Since the second limiting portion 23 is exposed outside the excitation brush holder 101, such a configuration is conducive to further preventing the staff from accidentally touching the second limiting portion 23, thereby improving safety.

[0081] Optionally, the shaft 21, the second limiter 23 and the handle 24 are integrally formed by epoxy resin casting, and the first limiter 22 is threadedly connected to the shaft 21 after epoxy resin casting. This arrangement can improve the insulation of the brush holder locking member 2 and provide higher safety.

[0082] Exemplarily, the method for using the generator performance detection device of this embodiment is:

[0083] When the rotor winding needs to be inspected, the brush 4 is first installed on the insulating mounting portion 11, and the cable 41 of the brush 4 is fixed to the conductive member 3 by screws, so that the brush 4 is electrically connected to the conductive member 3, and then the insulating brush holder 1 is inserted into the brush holder slot 1011 of the excitation brush holder 101, and the staff holds the handle 24 to rotate the shaft 21, so that the first limit portion 22 and the second limit portion 23 can be respectively abutted against the opposite sides of the excitation brush holder 101 along the radial direction of the rotor, so as to clamp the excitation brush holder 101 through the first limit portion 22 and the second limit portion 23, and then the insulating brush holder 1 and the excitation brush holder 101 are locked, so that the brush 4 is pressed against the surface of the collector ring 102. Then the wire clamp of the test instrument is clamped on the electrical connection portion 31 of the conductive member 3 to achieve the electrical connection between the conductive member 3 and the test instrument, that is, the installation of the generator performance detection device is completed.

[0084] It should be noted that since the generator 100 has two collector rings 102 and two excitation brush holders 101, namely, a positive collector ring and a negative collector ring, and a positive excitation brush holder 101 and a negative excitation brush holder 101. When testing the electronic winding, two generator performance testing devices can be installed in the brush holder slots 1011 of the two excitation brush holders 101, respectively, so that the brushes 4 of the two generator performance testing devices are respectively in contact with the two collector rings 102, and then the testing can be started.

[0085] The generator performance detection device of this embodiment can complete the purpose of rotor winding electrical performance testing without disassembling the excitation brush holder 101 or the excitation busbar connection components of the generator 100, and further eliminates the need to overhaul the generator 100 before grid connection, thus saving manpower and material resources.

[0086] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A generator performance detection device, wherein the generator (100) comprises an excitation brush holder (101) and a rotor rotatably arranged on the excitation brush holder (101), wherein a collector ring (102) is sleeved on the outer side of the rotor, and the collector ring (102) can rotate with the rotor; wherein the generator (100) comprises an excitation brush holder (101) and a rotor rotatably arranged on the excitation brush holder (101), wherein the outer side of the rotor is sleeved with a collector ring (102), and the collector ring (102) can rotate with the rotor; wherein the collector ring (102) is The generator performance detection device comprises: An insulating brush holder (1), the insulating brush holder (1) being provided with an insulating mounting portion (11) for mounting an electric brush (4), and when the electric brush (4) is mounted on the insulating mounting portion (11), one end of the electric brush (4) can abut against the collector ring (102); A brush holder locking piece (2), the brush holder locking piece (2) being used to lock or unlock the insulating brush holder (1) and the excitation brush holder (101); A conductive member (3), wherein the conductive member (3) is fixedly arranged on the insulating brush holder (1), and the conductive member (3) is used for being electrically connected to the brush (4).

2. The generator performance detection device according to claim 1, characterized in that: The generator performance detection device also includes an elastic member (6), wherein the elastic member (6) is configured to apply a biasing force to the brush (4) so ​​as to make the brush (4) approach the collector ring (102) in the radial direction of the rotor.

3. The generator performance detection device according to claim 1, characterized in that: The generator performance detection device further comprises at least one brush (4), at least one of the brushes (4) being mounted on the insulating mounting portion (11), one end of at least one of the brushes (4) being capable of abutting against the collector ring (102), and at least one of the brushes (4) being electrically connected to the conductive member (3).

4. The generator performance detection device according to claim 3, characterized in that: The brush (4) is a carbon brush or a copper brush.

5. The generator performance detection device according to claim 1, characterized in that: The brush holder locking member (2) comprises: A rotating shaft (21), the rotating shaft (21) being rotatably disposed on the insulating brush holder (1), and comprising a first end and a second end along the radial direction of the rotor, wherein the first end is closer to the rotor than the second end; a first limiting portion (22) and a second limiting portion (23), wherein the first limiting portion (22) is detachably arranged at the first end, and the second limiting portion (23) is fixedly arranged at the second end, and the first limiting portion (22) and the second limiting portion (23) are both capable of rotating along the rotating shaft (21), so that the first limiting portion (22) and the second limiting portion (23) respectively abut against two opposite sides of the excitation brush holder (101) along the radial direction of the rotor, or the first limiting portion (22) and the second limiting portion (23) are separated from the excitation brush holder (101); A handle (24) is fixedly arranged at the second end.

6. The generator performance detection device according to claim 5, characterized in that: The insulating brush holder (1) is made of insulating material; and / or, The handle (24) is made of insulating material; and / or, The second limiting portion (23) is made of insulating material.

7. The generator performance detection device according to claim 1, characterized in that: The conductive member (3) is provided with an electrical connection portion (31), and the electrical connection portion (31) is extended outward from the conductive member (3).

8. The generator performance detection device according to claim 1, characterized in that: The insulating mounting portion (11) comprises mounting grooves arranged in one-to-one correspondence with the brushes (4); the brushes (4) can be inserted into the corresponding mounting grooves, and one end of the brush (4) is located outside the corresponding mounting groove and is used to abut against the collector ring (102).

9. The generator performance detection device according to claim 1, characterized in that: The generator performance detection device also includes a conductive locking member (5), the brush (4) is provided with a cable (41), one end of the cable (41) is fixedly connected to the brush (4), and the other end of the cable (41) is fixedly connected to the conductive member (3) via the conductive locking member (5).

10. The generator performance detection device according to claim 1, characterized in that: The insulating brush holder (1) is also provided with an insulating limit portion (12), and the insulating limit portion (12) is capable of abutting against the excitation brush holder (101) to prevent the insulating brush holder (1) from moving relative to the excitation brush holder (101).

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