Variable-pitch capacitor discharge measuring device for wind turbine generator

Abstract

The utility model relates to the technical field of capacitance measurement, and discloses a wind turbine generator variable pitch capacitance discharge measuring device, which comprises a universal meter. The bottom of the universal meter is provided with a discharge bright display assembly, the two ends of the discharge bright display assembly are connected with discharge leads, and the discharge bright display assembly is used for discharging a capacitor. The end, away from the discharging bright display assembly, of the discharging lead is sleeved with a bag type dust blowing piece in a sliding mode. According to the wind turbine generator variable pitch capacitor discharge measuring device provided by the utility model, through introducing the discharge bright display assembly and the corresponding discharge lead design, electric energy stored in the capacitor can be effectively and visually consumed before capacitance measurement, so that the safety of maintenance personnel is ensured; and the risk that the universal meter is damaged due to direct measurement of the charged capacitor is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitance measurement, in particular to a wind turbine pitch capacitance discharge measurement device. Background Art

[0002] In wind power generation systems, due to intermittent changes in wind speed, the output power of wind turbines will fluctuate, which will affect the power quality of the power grid. In order to cope with this fluctuation, wind turbines need to use a pitch control system to adjust the angle between the windward surface of the blades and the longitudinal rotation axis, that is, the pitch angle, so that the output power of the wind turbine can be stabilized. In this process, capacitors, as a new type of energy storage device, are widely used in the pitch system of wind turbines as a backup power supply. During the maintenance of the wind turbine pitch system, it is necessary to use a multimeter to measure the capacitor to check whether its performance is normal. When measuring, you can set the multimeter to voltage measurement mode, and touch the positive and negative poles of the capacitor with the test leads respectively to observe the displayed voltage.

[0003] To ensure the safety of maintenance personnel and the normal operation of equipment, capacitors need to be discharged. This is because capacitors store a large amount of electrical energy after charging. If directly measured, the multimeter will be damaged. However, multimeters in the existing technology do not have a structure to discharge capacitors. In addition, if dust or impurities adhere to the positive and negative surfaces of the capacitor, it will affect the measurement effect, thereby misleading the judgment of the capacitor performance.

[0004] In order to solve the above problems, the present application proposes a wind turbine pitch capacitance discharge measurement device. Utility Model Content

[0005] Based on the technical problems existing in the background technology, the utility model proposes a wind turbine pitch capacitance discharge measurement device.

[0006] The utility model provides a wind turbine pitch capacitance discharge measuring device, comprising a multimeter;

[0007] A discharge highlight component is installed at the bottom of the multimeter, both ends of the discharge highlight component are connected to discharge leads, and the discharge highlight component is used to discharge the capacitor;

[0008] One end of the discharge lead away from the discharge highlighting component is slidably sleeved with a bag-type dust blowing piece.

[0009] Preferably, the discharge display component includes an assembly shell, a discharge resistor and an indicator light. The assembly shell is installed at the bottom of the multimeter. A cavity is opened in the assembly shell. The discharge resistor is installed in the cavity. The indicator light is installed on the front of the assembly shell. One end of the two discharge leads is connected to the discharge resistor and the indicator light respectively. The discharge resistor and the indicator light are electrically connected through a wire.

[0010] Preferably, the bag-type dust-blowing component includes a sleeve block, which is slidably sleeved on the end of the discharge lead away from the assembly shell, a cavity is opened in the sleeve block, and an opening connected to the cavity is opened on the top of the sleeve block, and a bag ball part is installed in the opening, which is arranged toward the end of the discharge lead and abuts against it.

[0011] Preferably, the balloon portion includes a balloon body, which is installed in the opening and abuts against the discharge lead. A dust blowing tube is connected to the periphery of the balloon body, and the end of the dust blowing tube away from the balloon body passes through the side of the sleeve and faces the end of the discharge lead.

[0012] Preferably, both the positive and negative poles of the multimeter are connected to a measuring pen.

[0013] The above technical solution of the utility model has the following beneficial technical effects:

[0014] 1. The discharge indicator and discharge leads allow you to connect the discharge leads at both ends of the indicator to the positive and negative electrodes of the capacitor before measuring capacitance. The indicator lights up immediately, consuming the energy in the capacitor. When the indicator goes off, it indicates that the energy in the capacitor has been consumed. This design, through the introduction of the discharge indicator and the corresponding discharge lead design, can effectively and intuitively consume the stored energy in the capacitor before capacitance measurement, ensuring the safety of maintenance personnel and avoiding the risk of damaging the multimeter due to directly measuring a charged capacitor.

[0015] 2. Through the provision of a sac-type dust-blowing piece, when the discharge lead is connected to the positive and negative poles of the capacitor, the sac-type dust-blowing piece at the end of the discharge lead can be pressed, and the positive and negative poles of the capacitor can be blown by the sac-type dust-blowing piece to effectively blow away the dust on the positive and negative poles of the capacitor. This structure can conveniently blow away the dust and impurities on the surface of the positive and negative poles of the capacitor by pressing the sac-type dust-blowing piece, thereby effectively improving the accuracy and reliability of the measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a schematic structural diagram of a wind turbine pitch capacitance discharge measurement device.

[0017] Figure 2 For this utility model Figure 1 Schematic diagram of the local structure in.

[0018] Figure 3 For this utility model Figure 1 Schematic diagram of the structure of the middle bag type dust blowing component.

[0019] Figure numerals: 1. multimeter; 2. discharge highlight component; 21. assembly shell; 22. discharge resistor; 23. indicator light; 24. wire; 3. discharge lead; 4. bladder dust blower; 41. sleeve block; 42. bladder ball part; 421. bladder ball body; 422. dust blower tube; 5. measuring pen. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0021] like Figure 1-3 As shown, the utility model proposes a wind turbine pitch capacitance discharge measuring device, including a multimeter 1

[0022] In this embodiment, a discharge highlighting component 2 is installed at the bottom of the multimeter 1, and both ends of the discharge highlighting component 2 are connected to a discharge lead 3. The discharge highlighting component 2 is used to discharge the capacitor. The discharge highlighting component 2 includes an assembly shell 21, a discharge resistor 22 and an indicator light 23. The assembly shell 21 is installed at the bottom of the multimeter 1. A cavity is opened in the assembly shell 21. The discharge resistor 22 is installed in the cavity. The indicator light 23 is installed on the front of the assembly shell 21. One end of the two discharge leads 3 is connected to the discharge resistor 22 and the indicator light 23 respectively. The discharge resistor 22 and the indicator light 23 are electrically connected through a wire 24. The discharge resistor 22, the indicator light 23, the wire 24, the two discharge leads 3 and the capacitor are connected in series.

[0023] It should be noted that: before measuring the capacitance, the discharge leads 3 at both ends of the discharge highlight component 2 can be connected to the positive and negative poles of the capacitor respectively, so that the discharge lead 3, the discharge resistor 22, and the indicator light 23 are connected in series, and then the indicator light 23 lights up, and the electricity in the capacitor is consumed through the discharge resistor 22 and the indicator light 23. When the discharge highlight component 2 goes out, it means that the electricity in the capacitor has been consumed. This structure, by introducing the discharge highlight component 2 and the corresponding discharge lead 3 design, can effectively and intuitively consume the electrical energy stored in the capacitor before capacitance measurement, thereby ensuring the safety of maintenance personnel and avoiding the risk of damaging the multimeter 1 due to directly measuring a charged capacitor.

[0024] In a further embodiment, a sac-type dust-blowing part 4 is slidably sleeved on the end of the discharge lead 3 away from the discharge highlighting component 2, and the sac-type dust-blowing part 4 includes a sleeve block 41, which is slidably sleeved on the end of the discharge lead 3 away from the assembly shell 21. A cavity is provided in the sleeve block 41, and an opening communicating with the cavity is provided on the top of the sleeve block 41. A sac ball part 42 is installed in the opening, which is arranged toward the end of the discharge lead 3 and abuts against it. The sac ball part 42 includes a sac ball body 421, which is installed in the opening and abuts against the discharge lead 3. A dust-blowing pipe 422 is connected to the outer periphery of the sac ball body 421, and the end of the dust-blowing pipe 422 away from the sac ball body 421 passes through the side of the sleeve block 41 and faces the end of the discharge lead 3.

[0025] It should be noted that: when the discharge lead 3 is connected to the positive and negative poles of the capacitor, the capsule ball 421 on the sleeve block 41 can be pressed, and the gas in the capsule ball 421 is then blown toward the positive and negative poles of the capacitor through the dust blowing tube 422, which can effectively blow away the dust on the positive and negative poles of the capacitor. This structure can easily blow away the dust and impurities on the surface of the positive and negative poles of the capacitor by pressing the capsule dust blowing part 4, thereby effectively improving the accuracy and reliability of the measurement.

[0026] In the specific embodiment, both the positive and negative poles of the multimeter 1 are connected to the measuring pen 5 .

[0027] It should be noted that after the capacitor is discharged, the measuring pen 5 on the multimeter 1 can be connected to the positive and negative electrodes of the capacitor respectively to measure the capacitance.

[0028] It should be understood that the above-described specific embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the scope of protection of the present invention. In addition, the appended claims of the present invention are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents thereof.

Claims

1. A wind turbine pitch capacitance discharge measuring device, comprising a multimeter (1), characterized in that: A discharge highlighting component (2) is installed at the bottom of the multimeter (1), both ends of the discharge highlighting component (2) are connected to discharge leads (3), and the discharge highlighting component (2) is used to discharge the capacitor; One end of the discharge lead (3) away from the discharge highlighting component (2) is slidably sleeved with a bag-type dust blowing member (4).

2. A wind turbine pitch capacitance discharge measurement device according to claim 1, characterized in that: The discharge light display component (2) comprises an assembly shell (21), a discharge resistor (22) and an indicator light (23); the assembly shell (21) is mounted on the bottom of the multimeter (1); a cavity is provided in the assembly shell (21); the discharge resistor (22) is mounted in the cavity; the indicator light (23) is mounted on the front of the assembly shell (21); one end of the two discharge leads (3) is connected to the discharge resistor (22) and the indicator light (23) respectively; the discharge resistor (22) and the indicator light (23) are electrically connected via a wire (24).

3. A wind turbine pitch capacitance discharge measurement device according to claim 2, characterized in that: The bag-type dust blowing member (4) comprises a sleeve block (41), the sleeve block (41) being slidably sleeved on an end of the discharge lead (3) away from the assembly shell (21), a cavity being provided in the sleeve block (41), and an opening communicating with the cavity being provided at the top of the sleeve block (41), a bag ball portion (42) being arranged toward the end of the discharge lead (3) and abutting against the end thereof being installed in the opening.

4. A wind turbine pitch capacitance discharge measurement device according to claim 3, characterized in that: The sac ball portion (42) comprises a sac ball body (421), the sac ball body (421) being installed in the opening and abutting against the discharge lead (3), a dust blowing pipe (422) being connected to the outer periphery of the sac ball body (421), and an end of the dust blowing pipe (422) away from the sac ball body (421) passing through the side of the sleeve block (41) and facing the end of the discharge lead (3).

5. The wind turbine pitch capacitance discharge measurement device according to claim 1, characterized in that: The positive and negative poles of the multimeter (1) are both connected to a measuring pen (5).

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