Super capacitor discharger for wind power generation variable pitch system

Abstract

The utility model provides a super capacitor discharge instrument used for a wind power generation pitch system, comprising a super capacitor discharge assembly used for the wind power generation pitch system, the super capacitor discharge assembly comprises a cabinet body, a cabinet door, a push-type switch, a display screen, a bleeder resistor and a PCB voltage detection board card, the cabinet door is hinged to the front part of the cabinet body, and the push-type switch is arranged on the cabinet door. The push type switch and the display screen are both installed on the cabinet door, the bleeder resistor and the PCB voltage detection board card are both installed in the cabinet body, a wiring end of the bleeder resistor is connected with a cable, and the wiring end of the bleeder resistor is connected with a super capacitor in an external wind power generation variable pitch system through the cable. According to the super capacitor discharger for the wind power generation variable pitch system, the problem that the super capacitor with a fixed structure needs to be assembled and disassembled and the energy needs to be discharged in the maintenance process is fundamentally solved, and meanwhile the dangerous situation possibly occurring in the maintenance process of workers is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to a super capacitor discharger for a wind power generation pitch control system. Background Art

[0002] At present, the backup power supply of the pitch system of wind turbines has been gradually transformed from lead-acid batteries to long-life and maintenance-free supercapacitors. However, the discharge circuit is not designed during the conventional transformation process. Therefore, it is often necessary to discharge the supercapacitors during the daily maintenance of the unit.

[0003] Because supercapacitor modules have very high power density, they are prone to inadequate discharge during unit maintenance, which can lead to safety hazards in electricity use. In addition, supercapacitors have the following problems when used as backup power sources:

[0004] 1. The device structure is fixed. When a fault occurs during system operation, the supercapacitor module needs to be discharged before the related equipment can be repaired and maintained. However, in general, there are no special discharge tools to discharge the backup power supply during the wind power generation maintenance process. Currently, the backup power supply of the wind power generation variable pitch system does not have such a discharge device.

[0005] 2. The current discharge equipment for the backup power supply of the wind power generation pitch control system does not have a voltage detection function, which brings inconvenience to maintenance personnel during use and makes it impossible to monitor the voltage detection status of the backup power supply.

[0006] Therefore, a supercapacitor discharger for a wind power generation pitch control system is proposed. Utility Model Content

[0007] The utility model aims to solve the problems raised in the background technology and provides a supercapacitor discharger for a wind power generation pitch control system.

[0008] The specific technical solutions are as follows:

[0009] A supercapacitor discharger for a wind power generation pitch control system, comprising:

[0010] A supercapacitor discharge component for a wind power generation pitch control system, the supercapacitor discharge component comprising a cabinet, a cabinet door, a push-type switch, a display screen, a discharge resistor and a PCB voltage detection board card, the front of the cabinet is an open structure, the cabinet door is hinged on the front of the cabinet, the push-type switch and the display screen are both installed on the cabinet door, the discharge resistor and the PCB voltage detection board card are both installed inside the cabinet, the connection terminal of the discharge resistor is connected with a cable, and the connection terminal of the discharge resistor is connected to a supercapacitor in an external wind power generation pitch control system through the cable, the push-type switch is connected in series to the cable between the discharge resistor and the supercapacitor, the voltage detection end of the PCB voltage detection board card is connected in parallel with the discharge resistor through a wire, and the analog output end of the PCB voltage detection board card is connected to the analog input end of the display screen.

[0011] As a preferred solution of the present utility model, the supercapacitor discharge assembly further includes a fuse, and the fuse is connected in series between the push-type switch and the discharge resistor.

[0012] As a preferred solution of the present utility model, the supercapacitor discharge assembly further includes a circuit breaker, and the circuit breaker is connected in series between the supercapacitor and the discharge resistor.

[0013] As a preferred solution of the utility model, the bleeder resistor is fixedly mounted inside the cabinet through a resistor mounting plate, the bleeder resistor is fixedly mounted on the resistor mounting plate, and the resistor mounting plate is fixedly mounted inside the cabinet.

[0014] As a preferred solution of the utility model, the PCB voltage detection board is fixedly mounted inside the cabinet through a PCB mounting plate, the PCB voltage detection board is fixedly mounted on the PCB mounting plate, and the PCB mounting plate is fixedly mounted inside the cabinet.

[0015] As a preferred solution of the utility model, a cable storage box for storing cables is fixedly installed inside the cabinet.

[0016] As a preferred solution of the utility model, a hollow arched rubber handle is fixedly installed on the top of the cabinet.

[0017] As a preferred solution of the present utility model, the push switch and the display screen are both located on the outer side of the cabinet door.

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

[0019] The supercapacitor discharger for a wind power generation pitch control system provided by the utility model mainly consists of a cabinet, a cabinet door, a push-type switch, a display screen, a discharge resistor and a PCB voltage detection board. When in use, the wiring terminal of the discharge resistor is connected to the supercapacitor in an external wind power generation pitch control system through a cable, and then the push-type switch is pressed. At this time, a loop is formed, and the electricity stored in the supercapacitor is discharged through the discharge resistor to avoid the residual voltage of the supercapacitor from causing harm to the staff. At the same time, the PCB voltage detection board monitors the residual voltage of the supercapacitor, and displays the monitored residual voltage value through the display screen for reference by the staff, so that the staff can proceed to the next step of work when it is known that the residual voltage of the supercapacitor is lower than the dangerous voltage. The problem of installing and disassembling the supercapacitor with a fixed structure and discharging energy during the maintenance process is fundamentally solved, and at the same time, dangerous situations that may occur during the maintenance process of the staff are avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a supercapacitor discharger for a wind power generation pitch control system provided by an embodiment of the utility model;

[0021] Figure 2 A circuit diagram of a supercapacitor discharger for a wind power generation pitch control system provided in an embodiment of the utility model.

[0022] In the attached figure:

[0023] 1. Display screen; 2. Push switch; 3. Cabinet door; 4. Bleeder resistor; 5. Resistor mounting plate; 6. PCB mounting plate; 7. PCB voltage detection board; 8. Rubber handle; 9. Cabinet; 10. Circuit breaker; 11. Cable storage box; 12. Fuse. DETAILED DESCRIPTION

[0024] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0025] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0026] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term 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 an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example

[0029] The supercapacitor discharger for a wind power generation pitch control system provided in this embodiment is as follows: Figure 1-Figure 2 As shown, it includes: a supercapacitor discharge component for a wind power generation pitch control system, the supercapacitor discharge component includes a cabinet 9, a cabinet door 3, a push-type switch 2, a display screen 1, a discharge resistor 4 and a PCB voltage detection board 7, the front of the cabinet 9 is an open structure, the cabinet door 3 is hinged at the front of the cabinet 9, the push-type switch 2 and the display screen 1 are both installed on the cabinet door 3, the discharge resistor 4 and the PCB voltage detection board 7 are both installed inside the cabinet 9, the connection terminal of the discharge resistor 4 is connected with a cable, and the connection terminal of the discharge resistor 4 is connected to the supercapacitor in the external wind power generation pitch control system through the cable, the push-type switch 2 is connected in series to the cable between the discharge resistor 4 and the supercapacitor, the voltage detection end of the PCB voltage detection board 7 is connected in parallel with the discharge resistor 4 through a wire, and the analog output end of the PCB voltage detection board 7 is connected to the analog input end of the display screen 1.

[0030] The supercapacitor discharger for a wind power generation pitch control system using the above technical solution is mainly composed of a cabinet 9, a cabinet door 3, a push-type switch 2, a display screen 1, a discharge resistor 4 and a PCB voltage detection board 7. When in use, the terminal of the discharge resistor 4 is connected to the supercapacitor in the external wind power generation pitch control system through a cable, and then the push-type switch 2 is pressed. At this time, a loop is formed, and the electricity stored in the supercapacitor is discharged through the discharge resistor 4 to prevent the residual voltage of the supercapacitor from causing harm to the staff. At the same time, the PCB voltage detection board 7 monitors the residual voltage of the supercapacitor and displays the monitored residual voltage value through the display screen 1 for reference by the staff, so that the staff can enter the next step of work when they know that the residual voltage of the supercapacitor is lower than the dangerous voltage. This fundamentally solves the problem of the need to install and disassemble the fixed-structure supercapacitor and discharge energy during maintenance, and at the same time avoids dangerous situations that may occur during maintenance by the staff.

[0031] In order to prevent the discharge resistor 4 from being burned out, the supercapacitor discharge assembly further includes a fuse 12 , which is connected in series between the push switch 2 and the discharge resistor 4 .

[0032] In order to further prevent the discharge resistor 4 from being burned out, the supercapacitor discharge assembly further includes a circuit breaker 10 , which is connected in series between the supercapacitor and the discharge resistor 4 .

[0033] Specifically, in order to facilitate the installation of the discharge resistor 4, in this embodiment: the discharge resistor 4 is fixedly installed inside the cabinet 9 through the resistor mounting plate 5, the discharge resistor 4 is fixedly installed on the resistor mounting plate 5, and the resistor mounting plate 5 is fixedly installed inside the cabinet 9.

[0034] Specifically, in order to facilitate the installation of the PCB voltage detection board 7, in this embodiment: the PCB voltage detection board 7 is fixedly installed inside the cabinet 9 through the PCB mounting plate 6, the PCB voltage detection board 7 is fixedly installed on the PCB mounting plate 6, and the PCB mounting plate 6 is fixedly installed inside the cabinet 9.

[0035] Specifically, in order to facilitate the storage of cables, in this embodiment: a cable storage box 11 for storing cables is fixedly installed inside the cabinet 9.

[0036] Specifically, in order to facilitate lifting the supercapacitor discharger, in this embodiment: a hollow arched rubber handle 8 is fixedly installed on the top of the cabinet 9.

[0037] Specifically, in order to facilitate the operation of the supercapacitor discharger, in this embodiment: the push switch 2 and the display screen 1 are both arranged on the outer surface of the cabinet door 3.

[0038] In summary, the supercapacitor discharger for a wind power generation pitch control system provided in this embodiment, when in use, connects the terminal of the discharge resistor 4 to the supercapacitor in the external wind power generation pitch control system through a cable, and then presses the push-type switch 2. At this time, a loop is formed, and the electricity stored in the supercapacitor is discharged through the discharge resistor 4 to prevent the residual voltage of the supercapacitor from causing harm to the staff. At the same time, the PCB voltage detection board 7 monitors the residual voltage of the supercapacitor, and displays the monitored residual voltage value through the display screen 1 for reference by the staff, so that the staff can proceed to the next step of work when they know that the residual voltage of the supercapacitor is lower than the dangerous voltage. It fundamentally solves the problem of the need to install and disassemble the supercapacitor with a fixed structure and discharge energy during the maintenance process, and at the same time avoids dangerous situations that may occur during the maintenance process of the staff.

[0039] The above are only preferred embodiments of the present invention, and do not limit the implementation mode and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A supercapacitor discharger for a wind power generation pitch control system, characterized in that: include: A supercapacitor discharge component for a wind power generation pitch control system, the supercapacitor discharge component comprising a cabinet (9), a cabinet door (3), a push-type switch (2), a display screen (1), a discharge resistor (4) and a PCB voltage detection board (7), the front of the cabinet (9) being an open structure, the cabinet door (3) being hinged on the front of the cabinet (9), the push-type switch (2) and the display screen (1) being mounted on the cabinet door (3), the discharge resistor (4) and the PCB voltage detection board (7) being mounted on the cabinet door (3), and the discharge resistor (4) and the PCB voltage detection board (7) being mounted on the cabinet door (3). Inside the cabinet (9), the wiring terminal of the discharge resistor (4) is connected to a cable, and the wiring terminal of the discharge resistor (4) is connected to a supercapacitor in an external wind power generation pitch control system through the cable, the push-type switch (2) is connected in series to the cable between the discharge resistor (4) and the supercapacitor, the voltage detection terminal of the PCB voltage detection board (7) is connected in parallel to the discharge resistor (4) through a wire, and the analog output terminal of the PCB voltage detection board (7) is connected to the analog input terminal of the display screen (1).

2. The supercapacitor discharger for a wind power generation pitch control system according to claim 1, characterized in that: The supercapacitor discharge component also includes a fuse (12), and the fuse (12) is connected in series between the push-type switch (2) and the discharge resistor (4).

3. The supercapacitor discharger for a wind power generation pitch control system according to claim 2, characterized in that: The supercapacitor discharge assembly also includes a circuit breaker (10), which is connected in series between the supercapacitor and the discharge resistor (4).

4. The supercapacitor discharger for a wind power generation pitch control system according to claim 3, characterized in that: The discharge resistor (4) is fixedly mounted inside the cabinet (9) via a resistor mounting plate (5); the discharge resistor (4) is fixedly mounted on the resistor mounting plate (5); and the resistor mounting plate (5) is fixedly mounted inside the cabinet (9).

5. The supercapacitor discharger for a wind power generation pitch control system according to claim 4, characterized in that: The PCB voltage detection board (7) is fixedly mounted inside the cabinet (9) via a PCB mounting plate (6); the PCB voltage detection board (7) is fixedly mounted on the PCB mounting plate (6); and the PCB mounting plate (6) is fixedly mounted inside the cabinet (9).

6. The supercapacitor discharger for a wind power generation pitch control system according to claim 1, characterized in that: A cable storage box (11) for storing cables is fixedly installed inside the cabinet (9).

7. The supercapacitor discharger for a wind power generation pitch control system according to claim 6, characterized in that: A hollow arched rubber handle (8) is fixedly mounted on the top of the cabinet (9).

8. The supercapacitor discharger for a wind power generation pitch control system according to claim 1, characterized in that: The push switch (2) and the display screen (1) are both located on the outer side of the cabinet door (3).

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