Power supply system of brush holder on-line monitoring device

Abstract

The invention discloses a power supply system of a brush holder on-line monitoring device. The power supply system comprises an electrical connecting piece, a first contact, a third contact and a second contact, the two electric connecting pieces are arranged on the bottom surface of the brush holder, one end of each electric connecting piece is connected with a power supply interface on a conductive ring of the brush holder, the other end of each electric connecting piece is connected with two first contacts, the first contacts penetrate through the brush holder, the corresponding connecting ends of the first contacts extend out of the top surface of the brush holder, and each first contact is provided with a telescopic structure; the two second contacts are arranged on the brush holder, the two third contacts are arranged on the brush holder, the third contacts are respectively connected with the two second contacts through conductive structures, and the brush holder on-line monitoring device is arranged in a handle of the brush holder and is electrically connected with the third contacts; and when the brush holder is inserted and fixed on the brush seat, the two first contacts are respectively connected with the two third contacts through the telescopic structure in a propping manner. Through the structural arrangement of the application, the on-off of the power supply of the on-line monitoring device is synchronized with the plugging of the brush holder, no additional action is needed, the risk of misoperation is reduced, and the workload is reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of generator devices, and in particular, relates to a power supply system for a brush rack online monitoring device. Background Art

[0002] Existing collector ring / brush holder online monitoring devices all require additional power supply. An independent power supply line is arranged along the surface of the brush holder conductive ring. The power supply line is provided with a power supply interface at the position of each brush holder. A power supply interface is also provided on the mainboard of the brush holder detection device and is connected to the power supply line through a cable.

[0003] During daily maintenance or inspection of the brush holder device, the brush holder needs to be removed from the brush holder. Before that, the power supply cable must be disconnected from the power supply line to prevent the interface on the main board or the power supply line from being damaged due to pulling during the removal of the brush holder. After the brush holder is installed on the brush holder, the power supply cable of the main board must be manually connected to the interface on the power supply line to realize the function of the online monitoring system.

[0004] At present, the brush holders of large generators all adopt a live pluggable structure, and the brush holder is locked and disengaged by rotating the handle. This process can be carried out when the brush holder is operating normally and the brush holder is energized. At the same time, the safety of the entire operation is guaranteed by the design of the brush holder structure.

[0005] According to the above scheme: an additional process needs to be added to the previous operation steps, and this process is completely unrelated to the basic function of the brush holder, increasing the risk of damage to the online monitoring module due to operator negligence; because the power supply line is set on the surface of the conductive ring with dots, and the entire power supply module exists independently of the brush holder, the operator's safety risk of electric shock is increased during the connection operation of the power supply module;

[0006] Each time the brush holder is plugged in and out, the power supply module needs to be plugged in and out twice. Assuming that the life of the brush holder is the same as that of the generator, that is, 30 years; the annual utilization hours of the generator are 8,000 hours; the brush holder needs routine maintenance at least once every 168 hours; it can be calculated that each power supply module needs to be plugged in and out 2,860 times during its entire life cycle. Generally, the number of brush holders for each large steam turbine generator can be as high as 48, and if it is a hydro turbine generator, it may be more. Therefore, a lot of extra work needs to be done to connect the power supply module.

[0007] For steam turbine generators, due to the small diameter of the collector ring and the limited space for the brush holder, when there are a large number of brush holders, the ergonomic design of some power supply modules is unreasonable, and the power supply modules are easily damaged during the connection process. Due to the low power, in order to facilitate operation in a small space, the power supply connector is usually very small and the cable is thin, which can easily damage the connection cable and the buckle of the interface during repeated plugging and unplugging. Summary of the invention

[0008] The purpose of the present application is to overcome the problems of the prior art and disclose a power supply system for an online monitoring device for a brush holder. The online power supply function of the online monitoring device for a brush holder is realized through the structural setting of the power supply system of the present invention.

[0009] The purpose of this application is achieved through the following technical solutions:

[0010] A power supply system for an online monitoring device for a brush holder, the power supply system for an online monitoring device for a brush holder comprising: an electrical connector, a first contact, a third contact and a second contact;

[0011] Two electrical connectors are arranged on the bottom surface of the brush holder, one end of the electrical connector is connected to the power supply interface on the conductive ring of the brush holder, and the other end is connected to two first contacts, the first contacts penetrate the brush holder and extend the corresponding connection ends out of the top surface of the brush holder, and the first contacts are provided with a telescopic structure;

[0012] Two third contacts are arranged on the brush holder, and the third contacts are respectively connected to the two second contacts via a conductive structure, and the brush holder online monitoring device is arranged in the handle of the brush holder and is electrically connected to the third contacts;

[0013] When the brush holder is plugged and fixed on the brush base, the two first contacts are respectively in contact with the two third contacts via the telescopic structure.

[0014] According to a preferred embodiment, the first contact includes: a base, an elastic component and a first contact, the base is fixedly connected to the brush holder body, the first contact is fixed to the base via the elastic component, and the connecting end of the first contact is a wedge-shaped structure.

[0015] According to a preferred embodiment, the third contact includes: a base body and a third contact, the third contact is fixed in the base body, the base body is fixedly connected to the body of the brush holder, the connecting end of the third contact is a wedge-shaped structure, and when the brush holder is inserted into the brush base, the two third contacts respectively cooperate with the two first contacts, and the third contact and the first contact are tightly connected through the elastic component.

[0016] According to a preferred embodiment, the second contact is two arc-shaped conductor structures symmetrical around the rotation axis of the brush holder, and the power supply mother port of the brush holder online monitoring device is connected to the two arc-shaped conductor structures respectively.

[0017] According to a preferred embodiment, a power supply monitoring module is provided between the two electrical connectors for completing power supply system status monitoring.

[0018] According to a preferred embodiment, a receiving groove is provided on the top surface of the brush holder for receiving the brush holder, and two first contacts are arranged in the receiving groove; the side wall structure of the receiving groove matches the edge structure of the brush holder for completing the positioning of the brush holder.

[0019] According to a preferred embodiment, a plurality of first through holes are provided in the accommodating groove to provide fixing space for bolts for fixing the brush holder.

[0020] According to a preferred embodiment, the brush holder body is further provided with second through holes that match the number and position of the first through holes. When the brush holder is inserted into the brush holder and the third contact is electrically connected to the first contact, a bolt is passed through the first through hole and the second through hole to achieve a stable connection between the brush holder and the brush holder.

[0021] According to a preferred embodiment, the third contact is electrically connected to the second connection contact via the first conductor and the second conductor in sequence, and the first conductor is symmetrically arranged on both sides of the rotating shaft, and the second conductor is symmetrically arranged on both sides of the rotating shaft; an insulating sleeve is also sleeved on the outer side of the second conductor.

[0022] According to a preferred embodiment, both ends of the brush holder are fixedly connected to the conductive ring, the conductive ring has a hole at the installation position of the brush holder and a female interface of the power supply connector is installed, the power supply connector is connected to the electrical connector on the brush holder, and the power supply connector adopts a circular connector, and a wire groove structure is opened on the conductive ring for wiring the wires connected to the power supply connector.

[0023] The aforementioned main scheme of the present application and its further options can be freely combined to form multiple schemes, all of which are schemes that can be adopted and claimed for protection in the present application. After understanding the scheme of the present application, those skilled in the art can understand that there are multiple combinations based on the prior art and common knowledge, all of which are technical schemes to be protected by the present application, and they are not exhaustively listed here.

[0024] Beneficial effects of this application:

[0025] Through the structural setting of the power supply system of the brush holder online monitoring device of the present application, the power supply on and off of the online monitoring device is synchronized with the plugging and unplugging of the brush holder, and no additional action is required, which reduces the risk of misoperation and reduces the workload. Since there is no need to connect or disconnect the power supply line, there is no risk of electric shock during the entire operation.

[0026] All parts of the power supply system are installed and debugged before the brush holder is assembled and shipped out of the factory. No operation is required on the entire power supply system during the later operation, which reduces the risk of system damage. The power supply line in the power supply system is completed when the brush holder is assembled, which has no effect on the assembly and operation of the original brush holder and can be selectively installed according to subsequent needs.

[0027] A power supply system monitoring module is installed on the brush holder, which can send out an alarm signal in time when an electrical connection component on a brush holder / brush holder fails. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the power supply system of the brush rack online monitoring device of the present application;

[0029] Figure 2 It is a schematic diagram of the top surface structure of the brush holder in the power supply system of the brush holder online monitoring device of the present application;

[0030] Figure 3 It is a structural schematic diagram of the first contact in the power supply system of the brush holder online monitoring device of the present application;

[0031] Figure 4 It is a schematic diagram of the bottom structure of the brush holder in the power supply system of the brush holder online monitoring device of the present application;

[0032] Figure 5 It is a structural schematic diagram of the brush holder in the power supply system of the brush holder online monitoring device of the present application;

[0033] Figure 6 This is a schematic diagram of the second contact structure in the power supply system of the brush holder online monitoring device of the present application;

[0034] Figure 7 This is a schematic diagram of the third contact structure in the power supply system of the brush holder online monitoring device of the present application;

[0035] Among them, 100-brush seat, 101-accommodating groove, 102-side wall, 103-first through hole, 104-first contact, 104a-base, 104b-elastic component, 104c-first contact, 105-electrical connection, 106-power supply monitoring module, 200-brush holder, 201-handle, 202-brush holder online monitoring device, 203-second contact, 204-rotating shaft, 205-third contact, 205a-seat body, 205b-third contact, 206-first conductor, 207-second conductor, 208-sleeve, 209-second through hole. DETAILED DESCRIPTION

[0036] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0037] 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.

[0038] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. 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.

[0039] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0040] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] In addition, the present application would like to point out that, in the present application, unless the specific structure, connection relationship, positional relationship, power source relationship, etc. are specifically written out, the structure, connection relationship, positional relationship, power source relationship, etc. involved in the present application are all known by those skilled in the art on the basis of the prior art without creative work.

[0042] refer to Figures 1 to 7 As shown, the present application discloses a power supply system for an online monitoring device for a brush holder, and the power supply system for an online monitoring device for a brush holder includes: an electrical connector 105 , a first contact 104 , a third contact 205 and a second contact 203 .

[0043] Two electrical connectors 105 are arranged on the bottom surface of the brush holder 100, one end of the electrical connector 105 is connected to the power supply interface on the conductive ring of the brush holder, and the other end is connected to two first contacts 104, the first contacts 104 penetrate the brush holder 100 and extend the corresponding connection ends out of the top surface of the brush holder 100, and the first contacts 104 are provided with a telescopic structure;

[0044] Two third contacts 205 are disposed on the brush holder 200 , and the third contacts 205 are respectively connected to the two second contacts 203 via conductive structures. The brush holder online monitoring device 202 is disposed in the handle 201 of the brush holder 200 and is electrically connected to the third contacts 205 ;

[0045] When the brush holder 200 is inserted and fixed on the brush base 100 , the two first contacts 104 are respectively in contact with the two third contacts 205 via the telescopic structure.

[0046] Preferably, a power supply monitoring module 106 is provided between the two electrical connectors 105 to monitor the power supply system status, so that when an electrical connection component on a brush holder / brush holder fails, an alarm signal can be issued in time.

[0047] Preferably, a receiving groove 101 is provided on the top surface of the brush holder 100 for receiving the brush holder 200, and two first contacts 104 are arranged in the receiving groove 101; the side wall 102 structure of the receiving groove 101 matches the edge structure of the brush holder 200, so as to complete the limiting of the brush holder 200, thereby facilitating the rapid insertion of the brush holder 200 into the working position.

[0048] Preferably, a plurality of first through holes 103 are provided in the receiving groove 101 to provide fixing space for bolts for fixing the brush holder 200 .

[0049] Preferably, the first contact 104 includes: a base 104a, an elastic component 104b and a first contact 104c, the base 104a is fixedly connected to the brush holder 100 body, the first contact 104c is fixed to the base 104a via the elastic component 104b, and the connecting end of the first contact 104c is a wedge-shaped structure.

[0050] Preferably, the brush holder 200 body is also provided with second through holes 209 matching the number and position of the first through holes 103. When the brush holder 200 is inserted into the brush holder 100 and the third contact 205 is electrically connected to the first contact 104, the brush holder 200 is stably connected to the brush holder 100 by bolts penetrating the first through holes 103 and the second through holes 209.

[0051] Preferably, the third contact 205 is electrically connected to the second connection contact via the first conductor 206 and the second conductor 207 in sequence, and the first conductor 206 is symmetrically arranged on both sides of the rotating shaft 204, and the second conductor 207 is symmetrically arranged on both sides of the rotating shaft 204; the outer side of the second conductor 207 is also sleeved with an insulating sleeve 208.

[0052] Preferably, the third contact 205 comprises: a seat body 205a and a third contact 205b, the third contact 205b is fixed in the seat body 205a, the seat body 205a is fixedly connected to the body of the brush holder 200, and the connecting end of the third contact 205b is a wedge-shaped structure.

[0053] Furthermore, when the brush holder 200 is inserted into the brush holder 100, the two third contacts 205b cooperate with the two first contacts 104c respectively, and the third contacts 205b and the first contacts 104c are tightly connected through the elastic component 104b.

[0054] Preferably, the second contact 203 is two arc-shaped conductor structures symmetrical around the rotating shaft 204 of the brush holder 200, and the power supply mother port of the brush holder online monitoring device 202 is connected to the two arc-shaped conductor structures respectively.

[0055] Preferably, the two ends of the brush holder 100 are fixedly connected to the conductive ring, and the conductive ring is opened at the installation position of the brush holder 100 and the female interface of the power supply connector is installed. Reliable insulation must be set between the connector and the conductive ring to avoid the influence of excitation on the operation of the power supply module. The power supply connector is connected to the electrical connector 105 on the brush holder 100, and the power supply connector adopts a circular connector to facilitate the adjustment of the installation angle during the installation of the brush holder. A wire groove structure is provided on the conductive ring for wiring the wires connected to the power supply connector, so as to achieve the standardization of wiring and reduce the possibility of damage caused by the exposure of the line.

[0056] When assembling the brush holder corresponding to this application, you need to first insert the power supply male port on the brush holder into the power supply female port on the conductive ring, then adjust the brush holder assembly angle, and then fix it. After the brush holder is installed, the insulation resistance values ​​between the power supply interface and the conductive ring and the brush holder should be measured respectively to ensure reliable insulation between the power supply interface and the conductive ring and the brush holder.

[0057] When assembling the brush holder corresponding to this application, the electrical connector should be fixed on the wedge-shaped connecting plate first, and then the shaft of the brush holder should be passed through the connector. Then, the elastic component, shield, handle component (including the main board of the online monitoring device, baffle, connecting plate, fasteners, etc.) should be installed in sequence according to the conventional assembly steps. Before installing the main board of the online monitoring device, the insulation resistance value between the electrical connector and the wedge-shaped connecting plate and the shaft should be measured to ensure reliable insulation between the electrical connector and the brush holder.

[0058] After the brush holder corresponding to the present application is assembled, the power supply cable is arranged in the wire groove on the conductive ring and connected to the power supply interface on the conductive ring in sequence. Finally, after all the power supply cables are gathered together, they are connected to the main plug on the brush holder base to complete the assembly of the entire brush holder.

[0059] Through the structural design of the power supply system of the brush holder online monitoring device of the present application, the online power supply function of the brush holder online monitoring device is realized. The power supply on and off of the online monitoring device is synchronized with the plugging and unplugging of the brush holder, and no additional action is required, which reduces the risk of misoperation and reduces the workload. Since there is no need to connect or disconnect the power supply line, there is no risk of electric shock during the entire operation.

[0060] All parts of the power supply system are installed and debugged before the brush holder is assembled and shipped out of the factory. No operation is required on the entire power supply system during the later operation, which reduces the risk of system damage. The power supply line in the power supply system is completed when the brush holder is assembled, which has no effect on the assembly and operation of the original brush holder and can be selectively installed according to subsequent needs.

[0061] A power supply system monitoring module is installed on the brush holder, which can send out an alarm signal in time when an electrical connection component on a brush holder / brush holder fails.

[0062] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A power supply system for a brush rack online monitoring device, characterized in that: The power supply system of the brush holder online monitoring device comprises: an electrical connector (105), a first contact (104), a third contact (205) and a second contact (203); Two electrical connectors (105) are arranged on the bottom surface of the brush holder (100), one end of the electrical connector (105) is connected to the power supply interface on the conductive ring of the brush holder, and the other end is connected to two first contacts (104), the first contacts (104) penetrate the brush holder and extend the corresponding connection ends out of the top surface of the brush holder (100), and the first contacts (104) are provided with a telescopic structure; Two third contacts (205) are arranged on the brush holder (200), and the third contacts (205) are respectively connected to the two second contacts (203) via conductive structures; the brush holder online monitoring device (202) is arranged in the handle (201) of the brush holder (200) and is electrically connected to the third contacts (205); When the brush holder (200) is plugged and fixed on the brush base (100), the two first contacts (104) are respectively in contact with the two third contacts (205) via the telescopic structure.

2. The power supply system for the brush holder online monitoring device according to claim 1, characterized in that: The first contact (104) comprises: a base (104a), an elastic component (104b) and a first contact (104c), The base (104a) is fixedly connected to the brush holder (100) body, the first contact (104c) is fixed on the base (104a) via an elastic component (104b), and the connection end of the first contact (104c) is a wedge-shaped structure.

3. The power supply system for the brush holder online monitoring device according to claim 2, characterized in that: The third contact (205) comprises: a seat body (205a) and a third contact (205b), wherein the third contact (205b) is fixed in the seat body (205a), and the seat body (205a) is fixedly connected to the body of the brush holder (200). The connecting end of the third contact (205b) is a wedge-shaped structure. When the brush holder (200) is inserted into the brush holder (100), the two third contacts (205b) respectively cooperate with the two first contacts (104c), and the third contacts (205b) and the first contacts (104c) are tightly connected through the elastic component (104b).

4. The power supply system for the brush holder online monitoring device according to claim 1, characterized in that: The second contact point (203) is two arc-shaped conductor structures symmetrically arranged around the rotating axis (204) of the brush holder (200), and the power supply mother port of the brush holder online monitoring device (202) is respectively connected to the two arc-shaped conductor structures.

5. The power supply system for the brush holder online monitoring device according to claim 1, characterized in that: A power supply monitoring module (106) is provided between the two electrical connectors (105) for completing power supply system status monitoring.

6. The power supply system for the brush holder online monitoring device according to claim 1, characterized in that: The top surface of the brush holder (100) is provided with a receiving groove (101) for receiving the brush holder (200), and the two first contact points (104) are arranged in the receiving groove (101); The side wall (102) structure of the accommodating groove (101) matches the edge structure of the brush holder (200) and is used to complete the positioning of the brush holder (200).

7. The power supply system for the brush holder online monitoring device according to claim 6, characterized in that: A plurality of first through holes (103) are provided in the accommodating groove (101) for providing fixing space for bolts used to fix the brush holder (200).

8. The power supply system for the brush holder online monitoring device according to claim 7, characterized in that: The brush holder (200) body is also provided with second through holes (209) whose number and position match those of the first through holes (103). When the brush holder (200) is inserted into the brush holder (100) and the third contact (205) is electrically connected to the first contact (104), a bolt is passed through the first through hole (103) and the second through hole (209) to achieve a stable connection between the brush holder (200) and the brush holder (100).

9. The power supply system for the brush holder online monitoring device according to claim 1, characterized in that: The third contact (205) is electrically connected to the second contact (203) via the first conductor (206) and the second conductor (207) in sequence. The first conductor (206) is symmetrically arranged on both sides of the rotating shaft (204), and the second conductor (207) is symmetrically arranged on both sides of the rotating shaft (204); an insulating sleeve (208) is also sleeved on the outer side of the second conductor (207).

10. The power supply system for the brush holder online monitoring device according to claim 1, characterized in that: Both ends of the brush holder (100) are fixedly connected to the conductive ring. The conductive ring is provided with a hole at the installation position of the brush holder (100) and a female interface of a power supply connector is installed thereon. The power supply connector is connected to an electrical connector (105) on the brush holder (100). The power supply connector is a circular connector. In addition, a wire groove structure is provided on the conductive ring for wiring the wires connected to the power supply connector.

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