CN212784314U - Self-pressure-relief switch cabinet - Google Patents
Self-pressure-relief switch cabinet Download PDFInfo
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- CN212784314U CN212784314U CN202021922225.XU CN202021922225U CN212784314U CN 212784314 U CN212784314 U CN 212784314U CN 202021922225 U CN202021922225 U CN 202021922225U CN 212784314 U CN212784314 U CN 212784314U
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Abstract
A self-pressure-relief switch cabinet belongs to the technical field of switch electrical. The cabinet comprises a cabinet body, wherein a pressure relief channel is formed at the top of the cabinet body, a pressure relief plate which is used for shielding the pressure relief channel in a non-pressure relief state and opening the pressure relief channel in a pressure relief state is arranged at a position corresponding to the upper part of the pressure relief channel, and a pressure relief plate opening position retaining mechanism which is used for retaining the pressure relief plate at an opening position is arranged at the top of the cabinet body or at one side of the pressure relief channel and at a position corresponding to the position where the pressure relief plate is opened to the maximum state. Under the fault condition, when high-temperature and high-pressure gas in the cabinet body rises suddenly, the pressure relief plate can be fully opened, abnormal autonomous falling of the pressure relief plate in the opening time period can be avoided, the safety of the switch cabinet is ensured, and explosion and even injury to field operation operators are avoided.
Description
Technical Field
The utility model belongs to the technical field of the switch is electric, concretely relates to from pressure release cubical switchboard.
Background
The switch cabinet is used for switching, controlling and protecting electric equipment in the process of generating, transmitting, distributing and converting electric energy of an electric power system, and the components in the cabinet mainly comprise a circuit breaker, a disconnecting switch, a load switch, an operating mechanism, a mutual inductor, various protection devices and the like. In the operation process of the switch cabinet, a primary loop in the cabinet is short-circuited due to short circuit, insulation aging or manual operation errors, internal arc voltage is generated, a large amount of high-temperature and high-pressure gas can be generated instantaneously in the process, if the high-temperature and high-pressure gas cannot be reliably and effectively released in a short time, electrical equipment in the switch cabinet can be damaged and even explosion accidents can be caused, and other switch cabinets in an electrical control room can be affected in a connected reaction mode.
At present, to put the cabinet in 10KV, generally independently set up pressure relief device at circuit breaker room, bus-bar room, cable chamber etc. to guarantee when the cubical switchboard is taking place internal fault electric arc, along with the appearance of electric arc, the inside atmospheric pressure of cubical switchboard rises, the pressure relief board at cabinet top will be opened automatically, release the cabinet internal pressure with the exhaust gas, guarantee operating personnel's safety and avoid the cubical switchboard to damage, and can also ensure to avoid hindering and other cell and adjacent cubical switchboard because of a cell breaks down. From the foregoing, it can be seen that: the switch cabinet with the pressure relief device arranged on the top has positive significance for protecting other cubicle switch cabinets, such as the pressure relief plate capable of being automatically opened. However, in the actual use process, the pressure relief plate often fails to open fully or open and then rebounds immediately to close the pressure relief opening or the pressure relief channel, thereby affecting the desired pressure relief effect.
Technical information related to the pressure relief of the switch cabinet can be found in published chinese patent documents, such as "high-voltage switch cabinet pressure relief device" recommended by CN10249877A, "automatic switch cabinet pressure relief device" provided by CN202333480U, and "a switch cabinet pressure relief structure" described in CN208401296U, etc., but the above-mentioned patents are not limited to the examples and do not give any suggestion to solve the above-mentioned technical problems of the applicant, and the technical solutions to be described below are generated in this context.
Disclosure of Invention
The task of the utility model is to provide an existing make the pressure release board fully open under the pressure release situation and be favorable to avoiding appearing the abnormal pressure release cubical switchboard that falls back after opening again.
The utility model discloses a task is accomplished like this, a from pressure release cubical switchboard, including the cabinet body, it has pressure release channel to constitute at the top of this cabinet body, is provided with one in the position that corresponds to pressure release channel's top and is used for shielding pressure release channel and the pressure release board of opening to pressure release channel under pressure release state one side of the cabinet body or be in pressure release channel is and corresponding to pressure release board is in the position department of opening to the maximum condition and is provided with one and is used for keeping the pressure release board at the pressure release board opening position retaining mechanism who opens the position.
In a specific embodiment of the present invention, the side of the pressure release plate facing the pressure release plate opening position maintaining mechanism is pivotally connected to one side of the upper portion of the pressure release passage at the top of the cabinet body through a pressure release plate pivot member, and the side of the pressure release plate facing away from the pressure release plate opening position maintaining mechanism is configured as a free side and is defined at the other side of the upper portion of the pressure release passage by a weak defining member.
In another specific embodiment of the present invention, the position of the pressure relief plate in the maximum state means that the pressure relief plate is opened to the extent that the side pivotally connected to the pivoting member of the pressure relief plate is perpendicular to the top of the cabinet.
In another embodiment of the present invention, the pressure relief plate pivoting member is a hinge or a pin.
In yet another embodiment of the present invention, the frangible limiter is a non-metallic fastener.
In still another specific embodiment of the present invention, the non-metallic fastener is a nylon bolt or a plastic bolt.
In a more specific embodiment of the present invention, the holding mechanism for holding the opening position of the pressure-releasing plate includes a holding-member holder for holding the opening position of the pressure-releasing plate and a holding member for holding the opening position of the pressure-releasing plate, the holding-member holder is fixed to the top of the cabinet or fixed to the outer wall of one side of the pivoting member of the pressure-releasing plate with the pressure-releasing passage, the holding-member holder is held by the pressure-releasing plate, and the holding-member holder is held by the pressure-releasing plate.
In yet another specific embodiment of the present invention, the number of the holding member opened by the pressure relief plate has one or a plurality of holding members spaced apart from each other and is directly embedded or fixed by an auxiliary fixing member on the upper portion of the holding member opened by the pressure relief plate and faces to one side of the opening direction of the pressure relief plate.
In a more specific embodiment of the present invention, the opening and holding part of the pressure relief plate is a magnetic block or a magnetic stripe, and the auxiliary fixing member is a protective mesh covering the magnetic block or the magnetic stripe and used for fixing the magnetic block or the magnetic stripe; the pressure relief plate is a magnetizable metal plate.
In yet another specific embodiment of the present invention, the pressing plate is provided with a holding part for holding the pressing plate, and the holding part is a concave part, and the pressing plate is provided with a groove on the side facing the direction of the pressing plate, and the pressing plate is provided with a protrusion part for fitting with the groove.
The technical scheme provided by the utility model the technical effect lie in: the pressure relief plate opening position maintaining mechanism for maintaining the pressure relief plate at the opening position is arranged at the top of the cabinet body or at one side of the pressure relief channel and at the position corresponding to the maximum opening state of the pressure relief plate, so that the pressure relief plate can be fully opened when high-temperature and high-pressure gas in the cabinet body suddenly rises under the fault condition, the abnormal autonomous falling of the pressure relief plate in the opening time period can be avoided, the safety of the switch cabinet is ensured, and explosion and even injury to field operation operators can be avoided.
Drawings
Fig. 1 is a schematic view of an embodiment of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a schematic view of the movement profile of the vent plate shown in fig. 1 and 2 when open.
Detailed Description
Example 1:
referring to fig. 1 and 2, a cabinet body 1 of a structural system of a switch cabinet is shown, a plurality of pressure relief channels 11 are formed on a top of the cabinet body 1, that is, extend upwards, and a pressure relief plate 111 for shielding an opening of the pressure relief channel 11 in a non-pressure relief state and opening the opening of the pressure relief channel 11 in a pressure relief state is disposed at a position corresponding to an opening part above the pressure relief channel 11.
In order to avoid the situation that the pressure relief plate 111 produces abnormal independently and falls back and close the pressure relief passageway 11 in the opening period, namely in the process of letting out the high-temperature high-pressure gas in the cabinet body 1, therefore as the utility model provides a technical scheme's technical essential: a vent plate open position holding mechanism 2 for holding the vent plate 111 in an open position is provided at the top of the cabinet 1 and at a position corresponding to the position where the vent plate 111 is in the open-to-maximum state, i.e., opened to the maximum extent.
The side of the pressure release plate 111 facing the pressure release plate open position maintaining mechanism 2 is pivotally connected to the upper side of the pressure release path 11 at the top of the cabinet 1 by a pressure release plate pivot member 1111, and the side of the pressure release plate 111 facing away from the pressure release plate open position maintaining mechanism 2 is configured as a free side and is defined at the upper side of the pressure release path 11 by a weak defining member 1112. The weak restriction 1112 described here means that the restriction capability of the pressure release plate 111 is limited, and in particular, when the high-temperature and high-pressure gas rushes out (leaks out) in the pressure release passage 11, the weak restriction 1112 releases the restriction on the aforementioned free side of the pressure release plate 111 and turns the free side of the pressure release plate 111 in the direction of the pressure release plate open position holding mechanism 2.
In this embodiment, the position of the pressure release plate at the maximum opening state refers to the opening state of the pressure release plate 111, which is the vertical degree between the side pivotally connected to the pressure release plate pivot component 1111 and the top of the cabinet 1, that is, the whole pressure release plate 111 is at the vertical degree with the top of the cabinet 1, and this state can be indicated by the turning state of the pressure release plate 111 on the pressure release channel 11 at the left side in fig. 3.
As shown in fig. 2, the vent plate pivot member 1111 is a hinge as previously described, but a pin or other equivalent member may be used.
In the present embodiment, the frangible limiter 1112 is a non-metallic fastener, specifically a nylon bolt, but a plastic bolt or other equivalent fastener may be used.
With reference to fig. 1 and fig. 2, as an embodiment, the above-mentioned pressure-releasing plate opening position holding mechanism 2 includes a pressure-releasing plate opening holding member bracket 21 and a pressure-releasing plate opening holding member 22, a lower portion of the pressure-releasing plate opening holding member bracket 21 is fixed to the top of the above-mentioned cabinet 1, an upper portion of the pressure-releasing plate opening holding member bracket 21 extends upward to a side corresponding to the height direction of the pressure-releasing channel 11, i.e. higher than the upper edge of the pressure-releasing channel 11, and the pressure-releasing plate opening holding member 22 is disposed on the upper portion of the pressure-releasing plate opening holding member bracket 21 and faces to one side of the opening direction of the above-mentioned pressure-.
As shown in fig. 2, the pressure relief plate opening holding member 22 is plural and spaced apart from each other, and may be directly embedded or fixed on the upper portion of the pressure relief plate opening holding member support 21 by an auxiliary fixing member 221, and faces one side of the opening direction of the pressure relief plate 111. Of course, the number of the pressure relief plate opening holding members 22 may be one, and is determined by the area, quality, and the like of the pressure relief plate 111.
In this embodiment, the opening and holding part 22 of the pressure release plate is a magnetic block, but may also be a magnetic strip, the auxiliary fixing element 221 is a protective mesh enclosure covering the magnetic block or the magnetic strip and used for fixing the magnetic block or the magnetic strip, and the protective mesh enclosure can also play a role in buffering and isolating the magnetic block or the magnetic strip, so as to avoid impact inertia damage when the pressure release plate 111 is opened. The pressure release plate 111 is a magnetizable metal plate so as to be attracted (attracted) by a magnetic block or a magnetic strip.
Referring to fig. 3, when an arc fault occurs inside the switch cabinet, the weak limiting member 1112 (shown in fig. 2) limiting the free end of the pressure releasing plate 111 is instantly released by a strong pressure inside the cabinet, the pressure releasing plate 111 is opened by using the pressure releasing plate pivoting member 1111 as a rotating shaft and is attracted by a magnetic block or a magnetic stripe as a magnetic material, that is, the pressure releasing plate 11 is firmly attached to the auxiliary fixing member 21 (mesh enclosure), thereby ensuring the pressure releasing effect during the pressure releasing process.
Example 2:
in the present embodiment, the pressure-release-plate-open-position maintaining mechanism 2 is provided on the outer wall of the pressure-release path 11, that is, on the outer wall of the pressure-release path 11 on the side of the pressure-release-plate pivoting member 1111. Specifically, a horizontal cantilever-type bracket holder is fixed to an outer wall of the pressure release path 11 (an outer wall on a side facing the pressure release plate pivoting member 1111), and a lower end of a pressure release plate holding member bracket 21 of the structural system of the pressure release plate open position holding mechanism 2 is fixed to the horizontal cantilever-type bracket holder. The rest is the same as described in example 1.
Example 3:
in the drawing, the pressure release plate opening/holding member 22 is a mortise block, and a groove is formed on one side of the mortise block facing the opening direction of the pressure release plate 111, and the cross-sectional shape of the groove is preferably in a figure of eight. A pressure release plate holding projection fitted into the groove is fixed to the pressure release plate 111 at a position corresponding to the mortise and tenon, and a protruding portion of the pressure release plate holding projection is fitted into the groove. When the pressure relief plate 111 is opened, the protruding part of the pressure relief plate holding projection can generate a mortise and tenon effect with the groove with the splayed cross section shape, so that the pressure relief plate 111 can be held at the opening position. The rest is the same as described in example 1.
Example 4:
in the drawing, the pressure-releasing plate opening holding member 22 of the structural system of the pressure-releasing plate opening position holding mechanism 2 is replaced by a tension spring, one end of the tension spring is fixed to the upper end of the pressure-releasing plate holding member holder 21, and the other end of the tension spring is fixed to the side of the free side of the pressure-releasing plate 111, which is opposite to the pressure-releasing channel 11, and the tension of the tension spring needs to be smaller than the weak limiting piece 1112, that is, the limiting force of the nylon bolt on the free end of the pressure-releasing plate 111. This configuration also allows the vent panel 111 to remain in the open position. The rest is the same as described in example 1.
The applicant needs to state that: the present invention is not limited by the above four embodiments, that is, the above embodiments are only some embodiments of the present invention, and other embodiments obtained by the skilled in the art without creative work should be considered as the technical content scope of the present invention.
To sum up, the technical solution provided by the present invention remedies the defects in the prior art, successfully completes the invention task, and faithfully embodies the technical effects mentioned in the above technical effect column by the applicant.
Claims (10)
1. The utility model provides a from pressure release cubical switchboard, includes cabinet body (1), constitutes pressure release passageway (11) at the top of this cabinet body (1), is provided with one in the position that corresponds to the top of pressure release passageway (11) and is used for shielding pressure release passageway (11) under the non-pressure release state and to pressure release board (111) open pressure release passageway (11) under the pressure release state, characterized in that be in the top of cabinet body (1) or be in one side of pressure release passageway (11) and be in corresponding to pressure release board (111) be in open to the position of maximum state department be provided with one and be used for keeping pressure release board (111) at the pressure release board open position retaining mechanism (2) of open position.
2. A self-venting switchgear, according to claim 1, characterized in that the side of said pressure-relief panel (111) facing said pressure-relief panel open position retaining means (2) is pivotally connected to the upper side of said pressure-relief channel (11) at the top of said cabinet (1) by means of a panel pivoting member (1111), while the side of said pressure-relief panel (111) facing away from said pressure-relief panel open position retaining means (2) is constituted as a free side and is defined on the upper side of said pressure-relief channel (11) by means of a frangible restriction (1112).
3. A self-venting switch cabinet according to claim 2, wherein the position where said venting plate is in the open to maximum state is the extent to which the venting plate (111) is open to the extent that the side pivotally connected to said venting plate pivot member (1111) is perpendicular to the top of said cabinet body (1).
4. A self-bleeding switch cabinet according to claim 2 or 3, characterised in that the bleeder plate pivot member (1111) is a hinge or a pin.
5. A self-venting switch cabinet as claimed in claim 2, wherein said frangible restriction (1112) is a non-metallic fastener.
6. The self-venting switch cabinet according to claim 5, wherein said non-metallic fasteners are nylon bolts or plastic bolts.
7. A self-pressure-release switchgear according to claim 2, wherein said pressure-release plate open position holding mechanism (2) comprises a pressure-release plate open holding member bracket (21) and a pressure-release plate open holding member (22), a lower portion of said pressure-release plate open holding member bracket (21) is fixed to a top of said cabinet (1) or to an outer wall of a side of said pressure-release duct (11) facing said pressure-release plate pivoting member (1111), and an upper portion of said pressure-release plate open holding member bracket (21) extends upward above a side corresponding to a height direction of said pressure-release duct (11), and said pressure-release plate open holding member (22) is provided at an upper portion of said pressure-release plate open holding member bracket (21) and facing a side of an opening direction of said pressure-release plate (111).
8. The switch cabinet as claimed in claim 7, wherein the number of said pressure relief panel opening holding members (22) is one or plural at intervals and is directly embedded or fixed on the upper part of said pressure relief panel opening holding member bracket (21) by an auxiliary fixing member (221) and faces to one side of the opening direction of said pressure relief panel (111).
9. The switch cabinet with self pressure relief as claimed in claim 8, wherein the pressure relief plate opening and holding member (22) is a magnetic block or a magnetic strip, the auxiliary fixing member (221) is a protective mesh enclosure covering the magnetic block or the magnetic strip and used for fixing the magnetic block or the magnetic strip; the pressure relief plate (111) is a magnetizable metal plate.
10. The switch cabinet of claim 8, wherein the pressure relief plate opening holding member (22) is a mortise block, a groove is formed on a side of the mortise block facing the opening direction of the pressure relief plate (111), a pressure relief plate holding protrusion fitted into the groove is fixed to the pressure relief plate (111) at a position corresponding to the mortise block, and a protruding portion of the pressure relief plate holding protrusion is fitted into the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021922225.XU CN212784314U (en) | 2020-09-04 | 2020-09-04 | Self-pressure-relief switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021922225.XU CN212784314U (en) | 2020-09-04 | 2020-09-04 | Self-pressure-relief switch cabinet |
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| Publication Number | Publication Date |
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| CN212784314U true CN212784314U (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021922225.XU Active CN212784314U (en) | 2020-09-04 | 2020-09-04 | Self-pressure-relief switch cabinet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115566568A (en) * | 2022-10-26 | 2023-01-03 | 西电宝鸡电气有限公司 | Self-adaptive adjustable pressure relief device, pressure relief method and inflatable switchgear |
-
2020
- 2020-09-04 CN CN202021922225.XU patent/CN212784314U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115566568A (en) * | 2022-10-26 | 2023-01-03 | 西电宝鸡电气有限公司 | Self-adaptive adjustable pressure relief device, pressure relief method and inflatable switchgear |
| CN115566568B (en) * | 2022-10-26 | 2023-12-26 | 西电宝鸡电气有限公司 | Self-adaptive adjustable pressure relief device, pressure relief method and inflatable switch equipment |
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