A safety type power capacitor

Abstract

The utility model discloses a safe power capacitor, include: capacitor body, the detection mouth is seted up on capacitor body, and the inside of capacitor body has filling oil, detection unit, including detection casing, be equipped with sliding channel and detection channel on detection casing, the inside of sliding channel is equipped with detection piston, when the oil pressure of filling oil exceeds the set pressure range, detection piston can move horizontally under the action of oil pressure to make detection channel with detection mouth intercommunication, position correction unit is connected with detection unit, and position correction unit can calibrate the initial position of detection piston and be used to show the shift position of detection piston. The utility model discloses can find the abnormal oil pressure of filling oil in time, improves security. At the same time, also has facilitated the operator more directly observes the moving position of detection piston.

Description

Technical Field

[0001] This utility model relates to the field of power capacitor technology, and in particular to a safety power capacitor. Background Technology

[0002] During actual operation, if a fault occurs in the capacitor core assembly, a large amount of heat will be generated inside the power capacitor. This causes the temperature of the oil filling the capacitor to rise, gradually building up pressure inside. When the pressure reaches a certain value, the two sides of the capacitor casing will push outwards, forming a "bulge." If the heat and pressure continue to accumulate to a certain extent, it can cause the capacitor to leak oil or even explode, leading to serious consequences. Therefore, how to monitor the internal pressure of power capacitors and improve safety is an urgent problem to be solved. Utility Model Content

[0003] Therefore, it is necessary to provide a safe power capacitor to address the aforementioned technical problems.

[0004] A safety-type power capacitor, comprising:

[0005] A capacitor body, wherein a detection port is provided on the capacitor body, and the interior of the capacitor body is filled with oil;

[0006] The detection unit includes a detection housing, on which a sliding channel and a detection channel are provided. A detection piston is provided inside the sliding channel. When the oil pressure of the filling oil exceeds a set pressure range, the detection piston can move horizontally under the action of the oil pressure and connect the detection channel with the detection port.

[0007] A position adjustment unit is connected to the detection unit. The position adjustment unit can calibrate the initial position of the detection piston and is used to display the offset position of the detection piston.

[0008] In one embodiment, the detection unit further includes a screw, a stop block, and a spring. The screw is threaded to one end of the detection housing, one end of the screw is connected to the stop block, and the spring is disposed between the stop block and the detection piston.

[0009] In one embodiment, the position adjustment unit includes a marker and a position display block, the marker being positioned on the top of the detection piston, the position display block being disposed on the top of the detection housing, and the position of the marker corresponding to the position of the position display block.

[0010] In one embodiment, the bottom of the detection channel is provided with a transparent detection tube, which is made of a flexible material.

[0011] In one embodiment, a pressure sensor is provided at the bottom of the detection tube, and the pressure sensor is connected to an external audible and visual alarm system.

[0012] In one embodiment, the detection channel is shaped like a trumpet, with a smaller top and a larger bottom.

[0013] The aforementioned safety-type power capacitor, by installing a detection unit onto the detection port of the capacitor body, allows the detection piston to move horizontally under the pressure of the filling oil when the oil pressure exceeds a set pressure range, connecting the detection channel with the detection port. This allows the filling oil to flow out of the detection port, enabling timely detection of abnormal oil pressure and improving safety. Furthermore, the position calibration unit calibrates the initial position of the detection piston and displays its offset position, ensuring the piston is in an accurate initial position, thus improving the accuracy of filling oil pressure detection. It also allows operators to more intuitively observe the movement of the detection piston. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of the safety power capacitor of this utility model;

[0016] Figure 2 This is a schematic diagram of the detection unit of this utility model. Detailed Implementation

[0017] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0018] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0020] See Figure 1-2 As shown, one embodiment of this utility model provides a safety power capacitor, comprising:

[0021] A capacitor body 1, wherein a detection port 2 is provided on the capacitor body 1, and the interior of the capacitor body 1 is filled with oil;

[0022] The detection unit 3 includes a detection housing 31, on which a sliding channel 32 and a detection channel 33 are provided. A detection piston 34 is provided inside the sliding channel 32. When the oil pressure of the filling oil exceeds the set pressure range, the detection piston 34 can move horizontally under the action of the oil pressure and connect the detection channel 33 with the detection port 2.

[0023] The position adjustment unit 4 is connected to the detection unit 3. The position adjustment unit 4 can calibrate the initial position of the detection piston 34 and is used to display the offset position of the detection piston 34.

[0024] The aforementioned safety-type power capacitor, by installing the detection unit 3 onto the detection port 2 of the capacitor body 1, allows the detection piston 34 to move horizontally under the pressure of the filling oil when the oil pressure exceeds a set pressure range, thus connecting the detection channel 33 with the detection port 2. This allows the filling oil to flow out of the detection port 2, enabling timely detection of abnormal oil pressure and improving safety. Furthermore, the position correction unit 4 calibrates the initial position of the detection piston 34 and displays its offset position, ensuring the piston 34 is in an accurate initial position, thereby improving the accuracy of filling oil pressure detection. It also allows operators to more intuitively observe the movement of the detection piston 34.

[0025] In one embodiment of the present invention, the detection unit 3 further includes a screw 35, a stop block 36 and a spring 37. The screw 35 is threadedly connected to one end of the detection housing 31, and one end of the screw 35 is connected to the stop block 36. The spring 37 is disposed between the stop block 36 and the detection piston 34.

[0026] In this embodiment, rotating the screw 35 can drive the stop 36 to move horizontally, thereby driving the detection piston 34 to move under the action of the spring 37, which facilitates the subsequent adjustment of the initial position of the detection piston 34.

[0027] In one embodiment of the present invention, the position adjustment unit 4 includes a pointer 41 and a position display block 42. The pointer 41 is located at the top of the detection piston 34, and the position display block 42 is disposed at the top of the detection housing 31. The position of the pointer 41 corresponds to the position of the position display block 42.

[0028] In this embodiment, when it is necessary to calibrate the initial position of the detection piston 34, it is only necessary to visually observe whether the positions of the pointer 41 and the position display block 42 correspond.

[0029] In one embodiment of this utility model, a transparent detection tube 5 is provided at the bottom of the detection channel 33, so that the filling oil flowing out of the detection port 2 can flow into the transparent detection tube 5, which facilitates observation by personnel. Furthermore, the detection tube 5 is made of a flexible material, allowing it to be bent at any angle for observation, further facilitating observation.

[0030] In one embodiment of this utility model, a pressure sensor 6 is provided at the bottom of the detection tube 5, and the pressure sensor 6 is connected to an external audible and visual alarm system. Thus, when the pressure sensor 6 senses the filling oil, the audible and visual alarm system can be triggered. Since the audible and visual alarm system is a commonly used system in the prior art, it will not be described in detail here.

[0031] In one embodiment of this invention, the detection channel 33 is funnel-shaped, with a smaller top and a larger bottom. This reduces the cross-sectional area of ​​the detection piston 34 and the overall volume.

[0032] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0033] The embodiments described above merely illustrate several implementations of this utility model, and should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A safety-type power capacitor, characterized in that, include: A capacitor body, wherein a detection port is provided on the capacitor body, and the interior of the capacitor body is filled with oil; The detection unit includes a detection housing, on which a sliding channel and a detection channel are provided. A detection piston is provided inside the sliding channel. When the oil pressure of the filling oil exceeds a set pressure range, the detection piston can move horizontally under the action of the oil pressure and connect the detection channel with the detection port. A position adjustment unit is connected to the detection unit. The position adjustment unit can calibrate the initial position of the detection piston and is used to display the offset position of the detection piston.

2. The safety-type power capacitor as described in claim 1, characterized in that, The detection unit further includes a screw, a stop block, and a spring. The screw is threaded to one end of the detection housing, and one end of the screw is connected to the stop block. The spring is disposed between the stop block and the detection piston.

3. The safety-type power capacitor as described in claim 2, characterized in that, The position adjustment unit includes a pointer and a position display block. The pointer is positioned on the top of the detection piston, and the position display block is located on the top of the detection housing. The position of the pointer corresponds to the position of the position display block.

4. The safety-type power capacitor as described in claim 1, characterized in that, The bottom of the detection channel is equipped with a transparent detection tube, which is made of a flexible material.

5. The safety-type power capacitor as described in claim 1, characterized in that, A pressure sensor is installed at the bottom of the detection tube, and the pressure sensor is connected to an external audible and visual alarm system.

6. The safety-type power capacitor as described in claim 1, 4, or 5, characterized in that, The detection channel is shaped like a trumpet, with a smaller top and a larger bottom.

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