CN110071438B - 10KV high-voltage explosion-proof metering cabinet capable of instantaneously releasing pressure - Google Patents
10KV high-voltage explosion-proof metering cabinet capable of instantaneously releasing pressure Download PDFInfo
- Publication number
- CN110071438B CN110071438B CN201910511568.2A CN201910511568A CN110071438B CN 110071438 B CN110071438 B CN 110071438B CN 201910511568 A CN201910511568 A CN 201910511568A CN 110071438 B CN110071438 B CN 110071438B
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- cabinet door
- metering
- explosion
- installation chamber
- cabinet body
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- 238000009434 installation Methods 0.000 claims abstract description 41
- 238000004880 explosion Methods 0.000 claims abstract description 21
- 239000011229 interlayer Substances 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 13
- 239000012528 membrane Substances 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 5
- 238000005192 partition Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
The invention discloses a 10kV high-voltage explosion-proof metering cabinet capable of instantaneously relieving pressure, which comprises a metering cabinet body and an interlayer arranged in the metering cabinet body, wherein the interlayer divides the metering cabinet body into a metering instrument installation chamber and a transformer installation chamber, a main electric energy meter, a secondary electric energy meter, a main terminal and a secondary terminal are arranged in the metering instrument installation chamber, a high-voltage relief valve capable of instantaneously relieving pressure is arranged at the bottom of the transformer installation chamber, an upper cabinet door and a lower cabinet door which are matched with the metering instrument installation chamber and the transformer installation chamber are also respectively arranged on the upper and lower sides of the metering cabinet body, and a visible window is arranged on the upper cabinet door; according to the invention, the high-pressure relief valve is arranged at the bottom of the transformer installation chamber, and the high-temperature high-pressure gas is instantaneously released at the first time when explosion occurs, so that the cabinet door is prevented from being popped up to hurt people, and other equipment is prevented from being damaged or causing interlinked explosion due to the explosion.
Description
Technical Field
The invention relates to the technical field of high-voltage metering cabinets, in particular to a 10kV high-voltage explosion-proof metering cabinet capable of instantaneously relieving pressure.
Background
Electric energy is the most dominant energy source used by various industries. With the development of national economy, the generated energy of China is larger and larger, the considerable proportion is occupied in the production cost of enterprises, and the metering cabinets are generally arranged on the lines of users so as to charge reasonably, and the metering cabinets are large in use amount, wide in distribution and large in dispersity. With the development of power technology, various metering control devices are popular in the market, and the metering control device is simple, has a column, falls to the ground, has a table lookup and charging function, has a prepayment function, is particularly suitable for metering cabinets of single enterprise users, is generally arranged outdoors, is convenient to overhaul and is convenient for a power supply company to maintain.
The 10kV high-voltage metering cabinet is an indispensable high-voltage metering cabinet in high-voltage distribution network equipment, is widely used in power distribution network end users, the existing 10kV metering cabinet lacks effective protection in safety, is difficult to guarantee safety of field operators by means of a plurality of screws, and can cause explosion of the voltage transformer in a few minutes after power transmission due to the fact that the voltage transformer is connected into a current loop after power transmission once technical improvement negligence occurs and indirectly forms a grounding path, and can cause explosion of the voltage transformer after a few minutes after power transmission due to the fact that the field operators do not approach the metering cabinet before power transmission, and the voltage transformer can be exploded after a few minutes of power transmission due to the fact that a cabinet door is exploded out, so that the operators can be knocked down to the ground.
The existing cabinet door at the lower part of the metering cabinet is provided with a screw alone, so that the safety protection of field operators is not achieved. According to accident analysis, to a great extent is because the cupboard can't release high temperature high pressure gas in the short time, when the explosion, the cupboard has the safeguard measure of pressure release, can avoid a large amount of casualties that are difficult to retrieve.
Disclosure of Invention
The invention aims to provide a 10kV high-pressure explosion-proof metering cabinet capable of instantaneously releasing pressure, which is characterized in that a high-pressure relief valve is additionally arranged at the bottom of a transformer installation chamber, and high-temperature high-pressure gas is instantaneously released at the first time when explosion occurs, so that the problem that a cabinet door flies out or other equipment is damaged when the transformer explodes to cause interlink explosion in the prior art is solved.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
The utility model provides a but 10kV high pressure explosion-proof measurement cabinet of instantaneous pressure release, includes the measurement cabinet body and sets up the interlayer at the internal portion of measurement cabinet, the interlayer is separated the measurement cabinet body into metering device mount chamber and mutual-inductor mount chamber, the internally mounted of metering device mount chamber has main ammeter, vice ammeter, main terminal and vice terminal, but the high pressure relief valve of instantaneous pressure release is installed to the bottom of mutual-inductor mount chamber, still install respectively with metering device mount chamber and mutual-inductor mount chamber assorted last cabinet door and lower cabinet door from top to bottom of the measurement cabinet body, install the visual window on the last cabinet door.
As a preferable scheme of the invention, the high-pressure relief valve comprises a relief groove arranged at the bottom of the transformer installation chamber, the upper end of the relief groove is provided with a gas guide port, the lower end of the relief groove is provided with a relief opening, the relief opening penetrates through the bottom of the transformer installation chamber and is communicated with the outside, and an explosion-proof membrane for breaking and relieving pressure during explosion is arranged in the relief opening.
As a preferable scheme of the invention, the upper end of the pressure relief groove is provided with an upper cover plate, the upper cover plate is connected with the bottom of the pressure relief groove through a compression spring, the air guide port is arranged on the upper cover plate, the edge of the air guide port extends downwards to form a circular tube, and the end part of the circular tube is provided with a sharp part capable of puncturing the explosion-proof film.
As a preferable scheme of the invention, the interlayer comprises a reticular partition plate fixedly arranged in the metering cabinet body, an expansion rubber sheet is arranged on the reticular partition plate, the edge of the expansion rubber sheet is fixedly connected with the inner wall of the metering cabinet body, a plurality of stacked folds are arranged on the expansion rubber sheet, and a plurality of concentric rings are arranged at the stacked folds in a penetrating way.
As a preferable scheme of the invention, one end of the upper cabinet door is hinged with the metering instrument installation chamber, and the other end of the upper cabinet door is fixedly connected with the metering instrument installation chamber through a lead sealing screw.
As a preferable scheme of the invention, two ends of the lower cabinet door are fixedly connected with the transformer installation chamber through bolts, and lead sealing screws are reinforced between the bolts.
As a preferred scheme of the invention, the metering device mounting chamber is also provided with a junction box which is opened and is used for connecting the secondary appearance terminal of the transformer.
As a preferable scheme of the invention, edges of the upper cabinet door and the lower cabinet door are respectively provided with an edge sealing for tightly sealing.
Embodiments of the present invention have the following advantages:
According to the invention, the high-pressure relief valve is arranged at the bottom of the transformer installation chamber, and the high-temperature high-pressure air flow is guided through the explosion-proof film at the bottom of the high-pressure relief valve, so that the pressure is burst and released at the first time when the metering cabinet body explodes, the cabinet door is prevented from being popped up to hurt people, and other equipment is prevented from being damaged or the cascade explosion is caused due to the explosion of the cabinet door.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the invention, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present invention, should fall within the ambit of the technical disclosure.
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic perspective view of a high pressure relief valve according to the present invention;
FIG. 3 is a top view of the spacer layer of the present invention.
In the figure:
1-an interlayer; 2-a metering device installation room; 3-a transformer installation room; 4-a main electric energy meter; 5-an auxiliary electric energy meter; 6-a master terminal; 7-a secondary terminal; 8-a high-pressure relief valve; 9-installing a cabinet door; 10-a lower cabinet door; 11-visual window; 12-lead sealing screws; 13-a bolt; 14-opening; 15-junction box; 16-edge sealing;
101-mesh separator; 102-an expansion rubber sheet; 103-a circular ring;
801-a pressure relief groove; 802-explosion-proof membrane; 803-upper cover plate; 804-compressing the spring; 805-round tubes; 806-sharp portion.
Detailed Description
In order to make the objects, features and advantages of the present invention more comprehensible, the technical solutions in the embodiments of the present invention are described in detail below with reference to the accompanying drawings, and it is apparent that the embodiments described below are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. It is noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1, the invention provides a 10kV high-voltage explosion-proof metering cabinet capable of instantaneously relieving pressure, which comprises a metering cabinet body and an interlayer 1 arranged in the metering cabinet body, wherein the interlayer 1 divides the metering cabinet body into a metering instrument installation chamber 2 and a transformer installation chamber 3, a main electric energy meter 4, a secondary electric energy meter 5, a main terminal 6 and a secondary terminal 7 are arranged in the metering instrument installation chamber 2, an empty switch 14 and a junction box 15 for connecting a secondary appearance terminal of a transformer are further arranged on the metering instrument installation chamber 2, a high-voltage relief valve 8 capable of instantaneously relieving pressure is arranged at the bottom of the transformer installation chamber 3, an upper cabinet door 9 and a lower cabinet door 10 which are matched with the metering instrument installation chamber 2 and the transformer installation chamber 3 are further arranged on the upper cabinet door and the lower cabinet door 9 respectively, and a visible window 11 is arranged on the upper cabinet door 9.
According to the invention, the high-pressure relief valve 8 is additionally arranged at the bottom of the transformer installation chamber 3, so that high-temperature high-pressure gas can be instantaneously released at the first time when explosion occurs, the cabinet door is prevented from flying out to hurt people, and other equipment is prevented from being damaged or causing cascade explosion due to the explosion; the instrument installation room 2 is additionally provided with the double-meter double-terminal, so that the requirements of the existing transaction users are met, and meanwhile, the internal condition can be seen clearly when the upper cabinet door 9 is not opened due to the design of the visual window 11.
Specifically, as shown in fig. 2, the high-pressure relief valve 8 includes a relief groove 801 installed at the bottom of the transformer installation chamber 3, a gas guide port is provided at the upper end of the relief groove 801, and a relief opening is provided at the lower end of the relief groove 801, the relief opening penetrates through the bottom of the transformer installation chamber 3 and is communicated with the outside, and an explosion-proof membrane 802 for breaking and relieving pressure during explosion is installed in the relief opening.
The gas guide port has a guiding function to the gas generated in the transformer installation chamber 3, and when explosion occurs, the high-temperature and high-pressure gas enters the pressure relief groove 801 through the gas guide port, and the explosion-proof membrane 802 is a metal film which is arranged at the upper part of the pressure container to prevent the explosion of the container in the prior art, and is a safety device, also called an explosion-proof sheet or a rupture disk. When the pressure in the container exceeds a certain limit, the film is broken, so that the pressure in the container can be reduced, and explosion is avoided. The high-temperature high-pressure air flow is guided by the explosion-proof membrane 802 at the bottom, so that the pressure is burst and released at the first time when the metering cabinet body explodes, and the cabinet door is prevented from being ejected.
As a further preferred aspect of the present invention, in order to accelerate the rupture of the rupture disc 802, to ensure that the high temperature and high pressure gas can be released at the first time, an upper cover plate 803 is provided at the upper end of the pressure relief groove 801, the upper cover plate 803 is connected to the bottom of the pressure relief groove 801 by a compression spring 804, the air guide opening is mounted on the upper cover plate 803, and the edge of the air guide opening extends downward to form a circular tube 805, and a sharp portion 806 capable of puncturing the rupture disc 802 is provided at the end of the circular tube 805.
When the high-temperature and high-pressure gas is released, on one hand, the gas directly collides with the explosion-proof membrane 802 to cause the explosion-proof membrane 802 to break, on the other hand, the upper cover plate 803 deforms under the pressure action, and the compression spring 804 drives the upper cover plate 803 to move downwards, so that the round tube 805 also moves downwards, and the sharp part 806 at the lower part of the round tube 805 directly pierces the explosion-proof membrane 802, thereby playing a role in double assurance of the rupture of the explosion-proof membrane 802 in emergency.
In addition, when explosion occurs in the transformer installation chamber 3, the high-temperature and high-pressure gas also plays a role in pressing the interlayer 1, and the loose interlayer connection can cause the high-temperature and high-pressure gas to collide upwards into the metering instrument installation chamber so as to force the upper cabinet door to pop out and hurt people.
Therefore, as shown in fig. 3, the interlayer 1 of the present invention includes a mesh-shaped partition 101 fixedly installed inside the metering tank, an expansion rubber sheet 102 is disposed on the mesh-shaped partition 101, an edge of the expansion rubber sheet 102 is fixedly connected with an inner wall of the metering tank, a plurality of stacked folds are disposed on the expansion rubber sheet 102, and a plurality of concentric rings 103 are disposed at the stacked folds in a penetrating manner.
The mesh-shaped partition plate 101 plays a role in up-down isolation of the measuring cabinet body, plays a role in supporting the expansion rubber sheet 102, has certain elasticity when explosion gas is released, and the concentric rings 103 move upwards to enable stacked folds to be opened to form an arch, and the arch plays a role in expanding the capacity of the transformer installation chamber 3 to buffer a part of pressure.
Further, in order to ensure the installation stability of the upper cabinet door 9 and the lower cabinet door 10, one end of the upper cabinet door 9 is hinged with the metering device installation chamber 2, and the other end of the upper cabinet door 9 is fixedly connected with the metering device installation chamber 2 through a lead sealing screw 12; both ends of the lower cabinet door 10 are fixedly connected with the transformer installation chamber 3 through bolts 13, lead sealing screws 12 are added between the bolts 13, and edges of the upper cabinet door 9 and the lower cabinet door 10 are provided with sealing edges 16 for tight sealing.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (1)
1. The utility model provides a but 10kV high pressure explosion-proof measurement cabinet of instantaneous pressure release, includes the measurement cabinet body and sets up interlayer (1) in the measurement cabinet body inside, interlayer (1) is separated the measurement cabinet body into measurement instrument mount chamber (2) and mutual-inductor mount chamber (3), a serial communication port, the internally mounted of measurement instrument mount chamber (2) has main ammeter (4), vice ammeter (5), main terminal (6) and vice terminal (7), but high pressure relief valve (8) of instantaneous pressure release are installed to the bottom of mutual-inductor mount chamber (3), go up cabinet door (9) and lower cabinet door (10) that are matched with measurement instrument mount chamber (2) and mutual-inductor mount chamber (3) are still installed respectively from top to bottom of the measurement cabinet body, install visual window (11) on last cabinet door (9);
The high-pressure relief valve (8) comprises a relief groove (801) arranged at the bottom of the transformer installation chamber (3), a gas guide port is formed in the upper end of the relief groove (801), a relief opening is formed in the lower end of the relief groove, the relief opening penetrates through the bottom of the transformer installation chamber (3) and is communicated with the outside, and an explosion-proof membrane (802) for breaking and relieving pressure during explosion is arranged in the relief opening;
The upper end of the pressure relief groove (801) is provided with an upper cover plate (803), the upper cover plate (803) is connected with the bottom of the pressure relief groove (801) through a compression spring (804), the air guide port is arranged on the upper cover plate (803), the edge of the air guide port extends downwards to form a circular tube (805), and the end part of the circular tube (805) is provided with a sharp part (806) capable of puncturing the explosion-proof membrane (802);
the interlayer (1) comprises a reticular separator (101) fixedly arranged in the metering cabinet body, an expansion rubber sheet (102) is arranged on the reticular separator (101), the edge of the expansion rubber sheet (102) is fixedly connected with the inner wall of the metering cabinet body, a plurality of stacked folds are arranged on the expansion rubber sheet (102), and a plurality of concentric rings (103) are arranged at the stacked folds in a penetrating mode;
One end of the upper cabinet door (9) is hinged with the metering instrument installation chamber (2), and the other end of the upper cabinet door (9) is fixedly connected with the metering instrument installation chamber (2) through a lead sealing screw (12);
both ends of the lower cabinet door (10) are fixedly connected with the transformer installation chamber (3) through bolts (13), and lead sealing screws (12) are reinforced between the bolts (13);
The metering instrument installation room (2) is also provided with an empty opening (14) and a junction box (15) for connecting a secondary appearance terminal of the transformer;
edges of the upper cabinet door (9) and the lower cabinet door (10) are respectively provided with an edge sealing (16) for tightly sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910511568.2A CN110071438B (en) | 2019-06-13 | 2019-06-13 | 10KV high-voltage explosion-proof metering cabinet capable of instantaneously releasing pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910511568.2A CN110071438B (en) | 2019-06-13 | 2019-06-13 | 10KV high-voltage explosion-proof metering cabinet capable of instantaneously releasing pressure |
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| Publication Number | Publication Date |
|---|---|
| CN110071438A CN110071438A (en) | 2019-07-30 |
| CN110071438B true CN110071438B (en) | 2024-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910511568.2A Active CN110071438B (en) | 2019-06-13 | 2019-06-13 | 10KV high-voltage explosion-proof metering cabinet capable of instantaneously releasing pressure |
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| Country | Link |
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| CN (1) | CN110071438B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112787239A (en) * | 2021-03-26 | 2021-05-11 | 广东电网有限责任公司 | Explosion-proof metering cabinet |
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| CN207490419U (en) * | 2017-11-10 | 2018-06-12 | 天津市诚源电器有限公司 | A kind of switchgear explosion-protection equipment |
| CN109378426A (en) * | 2018-11-22 | 2019-02-22 | 大连范特西西科技有限公司 | A kind of High-performance green cell safety explosion-protection equipment and method |
| CN209747962U (en) * | 2019-06-13 | 2019-12-06 | 广东电网有限责任公司 | 10kV high-voltage explosion-proof metering cabinet capable of instantaneously relieving pressure |
-
2019
- 2019-06-13 CN CN201910511568.2A patent/CN110071438B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2009853A1 (en) * | 1970-03-03 | 1971-09-16 | Metallgesellschaft Ag | Explosion lid |
| CN2933939Y (en) * | 2006-04-11 | 2007-08-15 | 曲永亮 | Explosion-proof oil tank |
| CN201441867U (en) * | 2009-06-25 | 2010-04-28 | 山东科大创业生物有限公司 | Dust remover with fire prevention and explosion prevention |
| CN202817116U (en) * | 2012-09-05 | 2013-03-20 | 东莞市迈科锂离子电池工业节能技术研究院 | Improved lithium-ion battery |
| CN206422403U (en) * | 2017-02-13 | 2017-08-18 | 湖北鄂电德力电气有限公司 | The blast resistance construction of high-tension switch cabinet |
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| CN207490419U (en) * | 2017-11-10 | 2018-06-12 | 天津市诚源电器有限公司 | A kind of switchgear explosion-protection equipment |
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| CN110071438A (en) | 2019-07-30 |
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