CN216980342U - Explosion-proof pressure relief device with explosion-proof identification and capacitor - Google Patents
Explosion-proof pressure relief device with explosion-proof identification and capacitor Download PDFInfo
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- CN216980342U CN216980342U CN202123316198.9U CN202123316198U CN216980342U CN 216980342 U CN216980342 U CN 216980342U CN 202123316198 U CN202123316198 U CN 202123316198U CN 216980342 U CN216980342 U CN 216980342U
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Abstract
The utility model discloses an explosion-proof pressure relief device with an explosion-proof mark and a capacitor, wherein the explosion-proof pressure relief device with the explosion-proof mark comprises an insulating main body, an explosion-proof sheet, an elastic element and an explosion-proof mark sheet, wherein a cavity is formed in the insulating main body, an exhaust hole is formed in the first side of the cavity, and a pressure relief hole communicated with the interior of a capacitor shell is formed in the second side opposite to the first side; the explosion-proof sheet is arranged in the cavity and covers the pressure relief hole; the elastic element is arranged in the cavity, one end of the elastic element is abutted against the explosion-proof sheet, and the other end of the elastic element is abutted against the first side of the cavity; the explosion-proof identification piece is attached to the exhaust hole of the insulating main body. After the explosion-proof pressure relief device performs the actions of air exhaust and pressure relief, whether the capacitor has a fault or not can be intuitively judged in time, so that the capacitor can be timely checked and replaced, and the potential safety hazard is reduced.
Description
Technical Field
The utility model relates to the technical field of electronic elements, in particular to an explosion-proof pressure relief device with an explosion-proof mark and a capacitor.
Background
The capacitor is widely applied to the aspects of blocking, coupling, bypassing, filtering, tuning loops, energy conversion, control circuits and the like. The sealed large capacitor is mainly applied to the industries of industrial control, rail transit rails and power grids, and generally has the characteristics of large volume, large capacitance and large weight. During the use process of the capacitor, gas can be generated and released in the capacitor due to the action of unexpected condition factors such as high and low temperature impact, overvoltage, overcurrent and the like, and the pressure in the shell can be increased due to the fact that the shell of the capacitor is sealed.
For solving the inside pressure problem of the casing of condenser, traditional sealed capacitor can be equipped with an explosion-proof pressure relief device usually, and when the condenser broke down, explosion-proof pressure relief device elastic component started the inside gas effectively to discharge. The defects are as follows: after the explosion-proof pressure relief device performs an exhaust action, a maintainer cannot visually judge whether the capacitor has a fault or not during regular inspection, and a client cannot timely inspect and replace the capacitor; if the defective capacitor continues to be used, further potential safety hazards may be accumulated, which may cause the housing to bulge, the interior to overheat and expand, and even cause fire or explosion.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving, at least to some extent, one of the technical problems in the art described above. Therefore, an object of the present invention is to provide an explosion-proof pressure relief device with an explosion-proof mark, which can visually determine whether a fault has occurred in a capacitor in time after an exhaust and pressure relief action of the explosion-proof pressure relief device occurs, so that the capacitor can be checked and replaced in time, and potential safety hazards are reduced.
A second object of the present invention is to provide a capacitor.
In order to achieve the above purpose, an embodiment of a first aspect of the present invention provides an explosion-proof pressure relief device with an explosion-proof mark, including:
the capacitor comprises an insulating main body, wherein a cavity is formed in the insulating main body, an exhaust hole is formed in the first side of the cavity, and a pressure relief hole communicated with the inside of a capacitor shell is formed in the second side opposite to the first side;
the explosion-proof piece is arranged in the cavity and covers the pressure relief hole;
the elastic element is arranged in the cavity, one end of the elastic element is abutted against the explosion-proof sheet, and the other end of the elastic element is abutted against the first side of the cavity;
the explosion-proof identification piece is attached to the exhaust hole of the insulating main body.
According to the explosion-proof pressure relief device with the explosion-proof mark, the explosion-proof mark piece is attached to the exhaust hole of the insulating main body, when the air pressure inside the capacitor exceeds a set safety value, the pressure provided by the air pressure inside the capacitor is larger than the pressure provided by the elastic element, the elastic element is continuously compressed at the moment, the explosion-proof mark piece is separated from the pressure relief hole, the air inside the capacitor flows out of the pressure relief hole and is exhausted outwards through the exhaust hole, the explosion-proof mark piece is jacked open or swelled by the air, whether the capacitor has a fault can be intuitively judged in time, and therefore the capacitor can be checked and replaced in time, the potential safety hazard caused by further accumulation of the capacitor is avoided, the bulge of the shell of the capacitor and the internal overheat expansion of the capacitor are avoided, even a fire or explosion is caused, and the potential safety hazard is reduced.
In addition, the explosion-proof pressure relief device with the explosion-proof mark, which is provided by the above embodiment of the utility model, may further have the following additional technical features:
optionally, the explosion-proof identification piece is attached to the exhaust hole in an interference fit manner with the insulating main body.
Specifically, the surface of the insulating main body is provided with an inner groove, and the explosion-proof identification piece is embedded into the inner groove and is partially or completely attached to the exhaust hole.
Further, the inner groove partially or completely covers the exhaust hole.
Further, the inner groove is arranged on the periphery of the exhaust hole.
Optionally, the explosion-proof identification piece is adhered to the insulating main body and attached to the exhaust hole.
Specifically, the surface of the insulating main body is provided with a rough processing surface, and the explosion-proof identification sheet is adhered to the rough processing surface and is partially or completely attached to the exhaust hole.
Further, the rough processing surface partially or completely covers the exhaust hole.
Further, the roughened surface is provided at the periphery of the exhaust hole.
Optionally, the insulating body comprises a first insulator and a second insulator; the first insulator defines a first groove, and the exhaust hole is formed in the bottom of the first groove; the second insulator limits a second groove, the bottom of the second groove is provided with the pressure relief hole, and the second insulator is connected with the first insulator to form the cavity.
In order to achieve the purpose, the embodiment of the second aspect of the utility model provides a capacitor, which comprises the explosion-proof pressure relief device with the explosion-proof mark.
According to the capacitor provided by the embodiment of the utility model, the explosion-proof identification piece is attached to the exhaust hole of the insulating main body, when the air pressure in the capacitor exceeds a set safety value, the pressure provided by the air pressure in the capacitor is greater than the pressure provided by the elastic element, the elastic element is continuously compressed at the moment, and the explosion-proof piece is separated from the pressure release hole, so that the air in the capacitor flows out of the pressure release hole and is then exhausted outwards through the exhaust hole, the explosion-proof identification piece is jacked open or swelled by the air, whether the capacitor has a fault can be timely and visually judged, the capacitor can be timely checked and replaced, the potential safety hazard is prevented from being further accumulated by the capacitor, the bulge of the shell of the capacitor and the overheat expansion of the interior are avoided, and even a fire or explosion is caused, and the potential safety hazard is reduced.
Drawings
FIG. 1 is a schematic structural diagram of an explosion-proof pressure relief device according to an embodiment of the utility model;
FIG. 2 is another schematic structural diagram of an explosion-proof pressure relief device according to an embodiment of the utility model;
FIGS. 3 to 5 are schematic structural views of an inner groove of an explosion-proof pressure relief device according to an embodiment of the utility model;
FIGS. 6 to 8 are schematic views of rough processed surfaces of an explosion-proof pressure relief device according to an embodiment of the utility model;
FIG. 9 is a schematic structural diagram of a capacitor according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of another capacitor structure according to an embodiment of the present invention.
Description of the reference symbols
The explosion-proof identification plate comprises an insulation main body 1, a first insulator 11, a first groove 111, a second insulator 12, a second groove 121, an inner groove 13, a rough processing surface 14, an explosion-proof plate 2, an elastic element 3, an explosion-proof identification plate 4, a cavity 5, an exhaust hole 51, a pressure relief hole 52 and a shell 6.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention.
According to the utility model, the explosion-proof identification piece is attached to the exhaust hole of the insulating main body, when the air pressure in the capacitor exceeds a set safety value, the pressure provided by the air pressure in the capacitor is greater than the pressure provided by the elastic element, at the moment, the elastic element is continuously compressed, and the explosion-proof identification piece is separated from the pressure release hole, so that the air in the capacitor flows out of the pressure release hole and is exhausted outwards through the exhaust hole, the explosion-proof identification piece is jacked open or swelled by the air, whether the capacitor has a fault can be timely and intuitively judged, the capacitor can be timely inspected and replaced, the capacitor is prevented from further accumulating potential safety hazards, the bulge of the shell and the overheat expansion of the capacitor are avoided, even a fire or explosion is caused, and the potential safety hazards are reduced.
In order to better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the utility model are shown in the drawings, it should be understood that the utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
As shown in fig. 1 to 8, an explosion-proof pressure relief device with an explosion-proof mark according to an embodiment of the present invention includes an insulating main body 1, an explosion-proof sheet 2, an elastic element 3, and an explosion-proof mark sheet 4.
A cavity 5 is formed in the insulating main body 1, a first side of the cavity 5 is provided with an exhaust hole 51, and a second side opposite to the first side is provided with a pressure relief hole 52 communicated with the inside of the capacitor shell.
Optionally, the insulating body 1 comprises a first insulator 11 and a second insulator 12; the first insulator 11 defines a first groove 111, and the bottom of the first groove 111 is provided with an exhaust hole 51; the second insulator 12 defines a second groove 121, a pressure relief hole 52 is formed at the bottom of the second groove 121, the second insulator 12 is connected with the first insulator 11 to form the cavity 5, the second insulator 12 is generally screwed with the first insulator 11, and the second insulator 12 is also screwed with the capacitor shell. The shape of the exhaust hole 51 may be square, rectangular, circular, hexagonal, or the like.
The explosion-proof piece 2 is arranged in the cavity 5 and covers the pressure relief hole 52, and when the air pressure inside the capacitor exceeds a set safety value, the air pressure separates the explosion-proof piece 2 from the pressure relief hole 52, so that the air inside the capacitor flows out of the pressure relief hole 52.
The elastic element 3 is arranged in the cavity 5, one end of the elastic element 3 is abutted against the explosion-proof sheet 2, and the other end of the elastic element 3 is abutted against the first side of the cavity 5. The elastic element 3 may be a compression spring.
The explosion-proof identification piece 4 is attached to the exhaust hole 51 of the insulating body 1. The shape of the explosion-proof identification piece 4 can be square, rectangle, circle, hexagon and the like. The explosion-proof identification sheet 4 is made of plastic film, paper, rubber and other materials, and commonly used materials include PET film, art paper, silicon rubber sheet and the like.
Optionally, the explosion-proof identification sheet 4 is fitted on the exhaust hole 51 in an interference fit with the insulation body 1. Specifically, the surface of the insulating main body 1 is provided with an inner groove 13, and the explosion-proof identification sheet 4 is embedded into the inner groove 13 to be in interference fit with the insulating main body 1 and is partially or completely attached to the exhaust hole 51. The inner groove 13 partially or completely covers the vent hole 51, as shown in fig. 3, the inner groove 13 completely covers the vent hole 51, and as shown in fig. 4, the inner groove 13 partially covers the vent hole 51. As shown in fig. 5, the inner groove 13 is provided at the periphery of the discharge hole 51.
Alternatively, the explosion-proof identification sheet 4 is bonded to the insulating main body 1 so as to be attached to the air vent hole 51. Specifically, the surface of the insulating main body 1 is provided with a rough treatment surface 14, and the explosion-proof identification sheet 4 is adhered to the rough treatment surface 14 through a jelly and is partially or completely attached to the exhaust hole 51. The roughened surface 14 partially or completely covers the exhaust holes 51, as shown in fig. 6, the roughened surface 14 completely covers the exhaust holes 51, and as shown in fig. 7, the roughened surface 14 partially covers the exhaust holes 51. As shown in fig. 8, the roughened surface 14 is provided on the periphery of the exhaust hole 51.
Because the laminating has explosion-proof identification piece 4 on insulating main body 1's exhaust hole 51, when the inside atmospheric pressure of condenser surpassed the safe value of settlement, the pressure that the inside atmospheric pressure of condenser provided is greater than the pressure that elastic element 3 provided, elastic element 3 continues to be compressed this moment, explosion-proof piece 2 separates with pressure release hole 52, make the inside gas of condenser flow from pressure release hole 52, then outwards discharge through exhaust hole 51, explosion-proof identification piece 4 is backed up or is bloated by gas, can in time judge directly perceivedly whether the condenser has produced the trouble, thereby can in time inspect, change the condenser, avoid the condenser further to gather the potential safety hazard, avoid the condenser case to swell, inside overheated inflation, cause conflagration or explosion even, thereby reduce the potential safety hazard.
As shown in fig. 9 to 10, a capacitor according to an embodiment of the present invention includes a case 6 and an explosion-proof pressure relief device with an explosion-proof mark, wherein a core is disposed in the case 6, the explosion-proof pressure relief device is disposed on a surface of the case 6, and an insulating terminal kit is further disposed on the surface of the case 6. The explosion-proof pressure relief device comprises an insulation main body 1, an explosion-proof sheet 2, an elastic element 3 and an explosion-proof identification sheet 4. A cavity 5 is formed in the insulating main body 1, a first side of the cavity 5 is provided with an exhaust hole 51, and a second side opposite to the first side is provided with a pressure relief hole 52 communicated with the inside of the capacitor shell. The explosion-proof sheet 2 is arranged in the cavity 5 and covers the pressure relief hole 52, the elastic element 3 is arranged in the cavity 5, one end of the elastic element 3 is abutted against the explosion-proof sheet 2, and the other end of the elastic element is abutted against the first side of the cavity 5. The explosion-proof identification piece 4 is attached to the exhaust hole 51 of the insulating body 1.
According to the capacitor provided by the embodiment of the utility model, as the anti-explosion identification piece 4 is attached to the exhaust hole 51 of the insulating main body 1, when the air pressure in the capacitor exceeds a set safety value, the pressure provided by the air pressure in the capacitor is greater than the pressure provided by the elastic element 3, at the moment, the elastic element 3 is continuously compressed, and the anti-explosion piece 2 is separated from the pressure release hole 52, so that the air in the capacitor flows out of the pressure release hole 52 and is exhausted outwards through the exhaust hole 51, the anti-explosion identification piece 4 is jacked open or swelled by the air, whether the capacitor has a fault can be timely and visually judged, the capacitor can be timely checked and replaced, the potential safety hazard caused by further accumulation of the capacitor is avoided, the bulge of the shell of the capacitor and the overheat expansion of the inner part are avoided, and even a fire or explosion is caused, and the potential safety hazard is reduced.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. An explosion-proof pressure relief device with an explosion-proof sign, comprising:
the capacitor comprises an insulating main body, wherein a cavity is formed in the insulating main body, an exhaust hole is formed in the first side of the cavity, and a pressure relief hole communicated with the inside of a capacitor shell is formed in the second side opposite to the first side;
the explosion-proof sheet is arranged in the cavity and covers the pressure relief hole;
the elastic element is arranged in the cavity, one end of the elastic element is abutted against the explosion-proof sheet, and the other end of the elastic element is abutted against the first side of the cavity;
the explosion-proof identification piece is attached to the exhaust hole of the insulating main body.
2. An explosion proof pressure relief device with an explosion proof identification as claimed in claim 1 wherein said explosion proof identification patch is attached to said vent hole in an interference fit with said insulating body.
3. An explosion-proof pressure relief device with an explosion-proof mark as claimed in claim 2, wherein the surface of the insulating main body is provided with an inner groove, and the explosion-proof mark sheet is embedded into the inner groove and partially or completely attached to the exhaust hole.
4. An explosion proof pressure relief device having an explosion proof identification as claimed in claim 3 wherein said internal recess partially or fully covers said vent opening.
5. An explosion proof pressure relief device having an explosion proof identification as claimed in claim 3 wherein said internal recess is provided at the periphery of said vent opening.
6. An explosion proof pressure relief device having an explosion proof flag as claimed in claim 1, wherein said explosion proof flag is adhered to said insulating body and attached to said vent hole.
7. An explosion-proof pressure relief device with an explosion-proof identification as claimed in claim 6, wherein the surface of the insulating main body is provided with a rough processed surface, and the explosion-proof identification sheet is adhered to the rough processed surface and partially or completely attached to the exhaust hole.
8. An explosion proof pressure relief device having an explosion proof identification as claimed in claim 7 wherein said roughened surface partially or fully covers said vent.
9. An explosion proof pressure relief device having an explosion proof identification as claimed in claim 7 wherein said roughened surface is disposed about the periphery of said vent opening.
10. A capacitor comprising an explosion proof pressure relief device with an explosion proof identification according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123316198.9U CN216980342U (en) | 2021-12-27 | 2021-12-27 | Explosion-proof pressure relief device with explosion-proof identification and capacitor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123316198.9U CN216980342U (en) | 2021-12-27 | 2021-12-27 | Explosion-proof pressure relief device with explosion-proof identification and capacitor |
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| CN216980342U true CN216980342U (en) | 2022-07-15 |
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| CN202123316198.9U Active CN216980342U (en) | 2021-12-27 | 2021-12-27 | Explosion-proof pressure relief device with explosion-proof identification and capacitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024051309A1 (en) * | 2022-09-09 | 2024-03-14 | 吴江天龙电子机械设备有限公司 | Mining explosion-proof spiral exhaust pressure relief device |
-
2021
- 2021-12-27 CN CN202123316198.9U patent/CN216980342U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024051309A1 (en) * | 2022-09-09 | 2024-03-14 | 吴江天龙电子机械设备有限公司 | Mining explosion-proof spiral exhaust pressure relief device |
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