CN108736366B - High tension switchgear door plant and high tension switchgear - Google Patents
High tension switchgear door plant and high tension switchgear Download PDFInfo
- Publication number
- CN108736366B CN108736366B CN201810808979.3A CN201810808979A CN108736366B CN 108736366 B CN108736366 B CN 108736366B CN 201810808979 A CN201810808979 A CN 201810808979A CN 108736366 B CN108736366 B CN 108736366B
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- voltage switch
- switch cabinet
- shaped groove
- cabinet body
- plate
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- 238000007789 sealing Methods 0.000 claims abstract description 46
- 238000004880 explosion Methods 0.000 claims abstract description 29
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 abstract description 5
- 238000005507 spraying Methods 0.000 abstract description 5
- 230000006978 adaptation Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process 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
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/24—Shutters or guards
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/02—Details
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
The invention discloses a high-voltage switch cabinet door plate and a high-voltage switch cabinet, wherein a circle of U-shaped groove is additionally arranged on the periphery of the inner side surface of a door plate body through changing the structure of a traditional door plate, when a breaker chamber is subjected to arcing explosion, high-pressure high-temperature gas generated in the first 0.7ms after the explosion can enter the U-shaped groove through a sealing strip on the inner side plate of the U-shaped groove, then is sprayed through a gap between the outer side plate of the U-shaped groove and the frame of the cabinet body, the pressure of the sprayed air flow is obviously lower than the indoor air pressure of the breaker through buffering of the U-shaped groove, the spraying speed of the high-pressure high-temperature gas is obviously reduced when the high-pressure high-temperature gas passes through the gap between the door plate and the frame of the cabinet body, the harm to human body when the high-pressure high-temperature gas generated by the explosion is directly sprayed out through the gap between the door plate and the frame of the cabinet body can be effectively avoided, and the use safety of the high-voltage switch cabinet is improved.
Description
Technical Field
The invention relates to a switch cabinet sealing structure, in particular to a high-voltage switch cabinet door plate and a high-voltage switch cabinet.
Background
With the development of society and science and technology, domestic requirements for high-voltage switch cabinets are higher and higher, and safety problems of the high-voltage switch cabinets in the use process are also increasingly outstanding. At present, the compartment of the metal armoured movable high-voltage switch cabinet, which is most prone to arcing explosion, is a breaker chamber, the protection level of a door plate of the compartment is IP4X, because the design of a pressure relief channel of the metal armoured movable high-voltage switch cabinet is nearly perfect, when the pressure relief cover is opened after the breaker chamber is subjected to arcing explosion for 0.7ms and the gas pressure generated by the explosion reaches 0.4Mpa, but within the first 0.7ms after the arcing explosion, the high-pressure high-heat gas generated by the explosion is rapidly sprayed out through the gap between a door plate and a door frame of the switch cabinet, so that the door plate is harmful to human bodies, potential safety hazards are brought to the breaker chamber, and even circuit fires are caused.
Disclosure of Invention
The invention aims to provide a high-voltage switch cabinet door plate and a high-voltage switch cabinet, which can reduce the injection speed of high-voltage high-heat gas generated when a breaker chamber is ignited and exploded and is injected through a gap between the door plate and a door frame.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides a high-voltage switch cabinet door plate, which comprises a door plate body, wherein a circle of U-shaped groove is circumferentially arranged at the edge of the inner side surface of the door plate body, and the U-shaped groove is perpendicular to the inner side surface of the door plate body; when the door plate body is in a closed state on the cabinet body, a gap is reserved between the outer side plate of the U-shaped groove and the outer surface of the frame of the cabinet body, and the inner side plate of the U-shaped groove is in sealing connection with the outer surface of the frame of the cabinet body through a sealing strip.
Optionally, the U-shaped groove includes the bottom plate, the bottom plate is fixed the medial surface of door plant body, the outer panel with the medial plate is perpendicular respectively fixed the both ends of bottom plate, the length of outer panel is greater than the length of medial plate.
Optionally, when the door panel body is in a closed state on the cabinet body, a gap between the outer side plate and the outer surface of the frame of the cabinet body is 1-4 mm, a gap between the inner side plate and the outer surface of the frame of the cabinet body is 6-10 mm, one end of the sealing strip is fixedly connected with the inner side plate, and the other end of the sealing strip is used for being in sealing contact with the outer surface of the frame of the cabinet body.
Optionally, when the door plant body is in the state of closing on the cabinet body, the clearance between the lateral plate with cabinet body frame surface is 2mm, the clearance between the medial plate with cabinet body frame surface is 8mm.
Optionally, the sealing strip is a polyurethane sealing strip.
Optionally, the bottom plate, the outer side plate and the inner side plate are integrally formed.
Optionally, the U-shaped groove and the door panel body are integrally bent and formed.
The invention also provides a high-voltage switch cabinet, which comprises the high-voltage switch cabinet door plate and the high-voltage switch cabinet body, wherein one side of the high-voltage switch cabinet door plate is connected to a side frame of the high-voltage switch cabinet body through a rotating hinge, and when the high-voltage switch cabinet door plate is in a closed state on the high-voltage switch cabinet body, the sealing strip is in contact seal with the side frame of the high-voltage switch cabinet body.
Optionally, the inside of the high-voltage switch cabinet body is provided with circuit breaker room and high-voltage switch cabinet pressure release passageway, works as when the circuit breaker room takes place the arcing explosion, the high-voltage switch cabinet pressure release passageway is used for discharging the high temperature high pressure gas that the explosion produced outside the cabinet through the U-shaped groove.
Compared with the prior art, the invention has the following technical effects:
according to the high-voltage switch cabinet door plate and the high-voltage switch cabinet, the traditional door plate structure is changed, the U-shaped groove is additionally formed in the periphery of the inner side surface of the door plate body, when the circuit breaker chamber is subjected to arcing explosion, high-pressure high-temperature gas generated in the first 0.7ms after the explosion enters the U-shaped groove through the upper sealing strip of the inner side plate of the U-shaped groove, then the gas is sprayed through the gap between the outer side plate of the U-shaped groove and the frame of the cabinet body, the sprayed gas flow pressure is obviously lower than the indoor gas pressure of the circuit breaker through the buffering of the U-shaped groove, the spraying speed of the high-pressure high-temperature gas is obviously reduced when the gas flows through the gap between the door plate and the frame of the cabinet body, the harm to human body when the high-pressure high-temperature gas generated by the explosion is directly sprayed through the gap between the door plate and the frame of the cabinet body can be effectively avoided, and the use safety of the high-voltage switch cabinet is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a door panel of a high voltage switchgear of the present invention;
FIG. 2 is a schematic cross-sectional view of the high voltage switchgear door panel of FIG. 1;
FIG. 3 is an enlarged schematic view of FIG. 2A;
FIG. 4 is a schematic view of the structure of FIG. 3 after the sealing strip is installed;
wherein, the reference numerals are as follows: 1. a door panel body; 2. a cabinet frame; 3. a U-shaped groove; 31. a bottom plate; 32. an outer panel; 33. an inner side plate; 4. a rotating hinge; 5. and (5) a sealing strip.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.
The invention aims to provide a high-voltage switch cabinet door plate and a high-voltage switch cabinet, which can reduce the injection speed of high-voltage high-heat gas generated when a breaker chamber is ignited and exploded and is injected through a gap between the door plate and a door frame.
Based on the above, the invention provides a high-voltage switch cabinet door plate, which comprises a door plate body, wherein a circle of U-shaped groove is circumferentially arranged at the edge of the inner side surface of the door plate body, and the U-shaped groove is perpendicular to the inner side surface of the door plate body; when the door plate body is in a closed state on the cabinet body, a gap is reserved between the outer side plate of the U-shaped groove and the outer surface of the cabinet body frame, and the inner side plate of the U-shaped groove is in sealing connection with the outer surface of the cabinet body frame through a sealing strip.
The invention also provides a high-voltage switch cabinet, which comprises the high-voltage switch cabinet door plate and the high-voltage switch cabinet body, wherein one side of the high-voltage switch cabinet door plate is connected to a side frame of the high-voltage switch cabinet body through a rotating hinge, and when the high-voltage switch cabinet door plate is in a closed state on the high-voltage switch cabinet body, the sealing strip is in contact sealing with the side frame of the high-voltage switch cabinet body.
According to the high-voltage switch cabinet door plate and the high-voltage switch cabinet, the traditional door plate structure is changed, the U-shaped groove is additionally formed in the periphery of the inner side surface of the door plate body, when the circuit breaker chamber is subjected to arcing explosion, high-pressure high-temperature gas generated in the first 0.7ms after the explosion enters the U-shaped groove through the upper sealing strip of the inner side plate of the U-shaped groove, then the gas is sprayed through the gap between the outer side plate of the U-shaped groove and the frame of the cabinet body, the sprayed gas flow pressure is obviously lower than the indoor gas pressure of the circuit breaker through the buffering of the U-shaped groove, the spraying speed of the high-pressure high-temperature gas is obviously reduced when the gas flows through the gap between the door plate and the frame of the cabinet body, the harm to human body when the high-pressure high-temperature gas generated by the explosion is directly sprayed through the gap between the door plate and the frame of the cabinet body can be effectively avoided, and the use safety of the high-voltage switch cabinet is improved.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Embodiment one:
as shown in fig. 1 to 4, the embodiment provides a high-voltage switch cabinet door plate, which comprises a door plate body 1, wherein a circle of U-shaped grooves 3 are circumferentially arranged at the edge of the inner side surface of the door plate body 1, the U-shaped grooves 3 are perpendicular to the inner side surface of the door plate body 1, and the U-shaped grooves 3 are distributed between the door plate body 1 and the outer surface of a cabinet frame 2; when the door panel body 1 is in a closed state on the cabinet body, as shown in fig. 3, a gap is reserved between the outer side plate 32 of the U-shaped groove 3 and the outer surface of the cabinet body frame 2, and the inner side plate 33 of the U-shaped groove 3 is in sealing connection with the outer surface of the cabinet body frame 2 through the sealing strip 5. As shown in fig. 2 to 4, when the door panel body 1 is in a closed state on the cabinet, the outer side plate 32 is located outside the cabinet, and the inner side plate 33 is located inside the cabinet.
In this embodiment, as shown in fig. 2 to 4, the U-shaped groove 3 includes a bottom plate 31, the bottom plate 31 is fixed on the inner side surface of the door panel body 1, an outer side plate 32 and an inner side plate 33 are respectively fixed on two ends of the bottom plate 31 vertically, and the length of the outer side plate 32 is greater than that of the inner side plate 33.
Further, as shown in fig. 2 to 4, when the door panel body 1 is in a closed state on the cabinet body, the gap between the outer side plate 32 and the outer surface of the cabinet body frame 2 is 1-4 mm, the gap between the inner side plate 33 and the outer surface of the cabinet body frame 2 is 6-10 mm, one end of the sealing strip 5 is fixedly connected with the inner side plate 33, the other end of the sealing strip is used for being in sealing contact with the outer surface of the cabinet body frame 2, when the circuit breaker chamber in the cabinet body is in arcing explosion, high-pressure high-temperature gas generated in the first 0.7ms after the explosion is discharged, because the sealing strip 5 is only in sealing contact with the outer surface of the cabinet body frame 2, the flexible sealing strip 5 can be expanded and deformed under the action of the high-pressure high-temperature gas, so that the gap is formed between the sealing strip 5 and the outer surface of the cabinet body frame 2, at the moment, the high-pressure high-temperature gas can enter the U-shaped groove 3 through the gap, the pressure of the ejected air flow is obviously lower than the indoor air pressure of the circuit breaker, the gap between the outer side plate 32 of the U-shaped groove 3 and the outer surface of the high-temperature gas frame 2 is avoided, and the high-pressure safety hazard to the human body can be directly caused by the high-pressure safety hazard to the door panel and the high-pressure safety when the door panel is directly discharged through the gap.
In this embodiment, when the door panel body 1 is in the closed state on the cabinet body, the gap between the outer side plate 32 and the outer surface of the cabinet frame 2 is preferably 2mm, and the gap between the inner side plate 33 and the outer surface of the cabinet frame 2 is preferably 8mm.
Further, the sealing strip 5 is a polyurethane sealing strip, and the sealing strip 5 not only can realize the function of sealing the gap between the inner side plate 33 and the outer surface of the frame 2 of the cabinet body, but also can effectively prevent the dust carried by the air outside the cabinet body from entering the cabinet body, thereby having good dustproof effect; after the sealing strip 5 is installed, when the door plate body 1 is in a closed state on the cabinet body, the protection level can reach IP5X.
Further, the bottom plate 31, the outer side plate 32, and the inner side plate 33 are integrally formed.
Furthermore, the whole U-shaped groove 3 and the door plate body 1 are integrally bent, namely, the U-shaped groove 3 is formed by extending and bending the edge part of the door plate body 1, and the integral structure is beneficial to improving the structural stability of the door plate body 1. In addition, the U-shaped groove 3 and the door plate body 1 can be connected in a welding mode, and the welding connection mode is more conventional and is not repeated here.
Therefore, according to the high-voltage switch cabinet door plate disclosed by the invention, by changing the traditional door plate structure, the U-shaped groove is additionally arranged on the periphery of the inner side surface of the door plate body, when the circuit breaker chamber in the cabinet body is subjected to arcing explosion, high-pressure high-temperature gas generated in the first 0.7ms after the explosion can enter the U-shaped groove through the upper sealing strip of the inner side plate of the U-shaped groove, then is sprayed through the gap between the outer side plate of the U-shaped groove and the cabinet body frame, the sprayed air flow pressure is obviously lower than the indoor air pressure of the circuit breaker through the buffering of the U-shaped groove, the spraying speed of the high-pressure high-temperature gas is obviously reduced through the gap between the door plate and the cabinet body frame, the harm to human body caused by the fact that the high-pressure high-temperature gas generated by the explosion is directly sprayed through the gap between the door plate and the cabinet body frame can be effectively avoided, and the use safety of the high-voltage switch cabinet is improved.
Embodiment two:
the embodiment provides a high-voltage switch cabinet, including above-mentioned high-voltage switch cabinet door plant and high-voltage switch cabinet body, as shown in fig. 1, one side of high-voltage switch cabinet door plant passes through rotation hinge 4 to be connected on the frame of one side of the high-voltage switch cabinet body, and when high-voltage switch cabinet door plant is in the closed state on the high-voltage switch cabinet body, sealing strip 5 and the frame contact seal of the high-voltage switch cabinet body. Meanwhile, a breaker chamber and a high-voltage switch cabinet pressure relief channel are arranged in the high-voltage switch cabinet body, and when the breaker chamber is subjected to arcing explosion, the high-voltage switch cabinet pressure relief channel is used for discharging high-temperature and high-pressure gas generated by the explosion out of the cabinet through a U-shaped groove. The circuit breaker chamber and the pressure release channel of the high-voltage switch cabinet are all conventional settings known in the art, and when the gas pressure generated by explosion reaches 0.4Mpa after the circuit breaker chamber is subjected to arcing explosion for 0.7ms, the pressure release cover in the pressure release channel of the high-voltage switch cabinet can be opened. However, in the embodiment, the gas generated within the first 0.7ms after the arcing explosion enters the U-shaped groove through the upper sealing strip of the inner side plate of the U-shaped groove, and then is sprayed through the gap between the outer side plate of the U-shaped groove and the frame of the cabinet body, the pressure of the sprayed gas flow is obviously lower than the indoor gas pressure of the circuit breaker through the buffering of the U-shaped groove, the spraying speed of the high-pressure high-temperature gas is obviously reduced through the gap between the door plate and the frame of the cabinet body, the harm to human body caused by the fact that the high-pressure high-temperature gas generated by the explosion is directly sprayed through the gap between the door plate and the frame of the cabinet body can be effectively avoided, and the use safety of the high-voltage switch cabinet is improved.
It should be noted that, the structure shape of the U-shaped groove in the present invention is not limited to the first embodiment and the second embodiment, and the adaptation changes according to the actual requirements are all within the protection scope of the present invention; the connection relation between the U-shaped groove and the door plate body is not limited to the welding or the integral bending forming in the first and second embodiments, and the adaptation change according to the actual requirement is within the protection scope of the invention; in addition, the sealing strip is not limited to polyurethane sealing strips, and the adaptation to the actual requirements is within the scope of the invention.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (5)
1. The utility model provides a high tension switchgear door plant which characterized in that: the novel door plate comprises a door plate body, wherein a circle of U-shaped groove is circumferentially arranged at the edge of the inner side surface of the door plate body, the U-shaped groove is perpendicular to the inner side surface of the door plate body, the U-shaped groove comprises a bottom plate, the bottom plate is fixed on the inner side surface of the door plate body, an outer side plate and an inner side plate of the U-shaped groove are respectively and vertically fixed at two ends of the bottom plate, and the length of the outer side plate is larger than that of the inner side plate; when the door plate body is in a closed state on the cabinet body, the gap between the outer side plate and the outer surface of the cabinet body frame is 1-4 mm, the gap between the inner side plate and the outer surface of the cabinet body frame is 6-10 mm, the inner side plate of the U-shaped groove is in sealing connection with the outer surface of the cabinet body frame through a sealing strip, one end of the sealing strip is fixedly connected with the inner side plate, and the other end of the sealing strip is in sealing contact with the outer surface of the cabinet body frame; the bottom plate, the outer side plate and the inner side plate are integrally formed, and the U-shaped groove and the door plate body are integrally bent and formed.
2. The high voltage switchgear door panel as claimed in claim 1, wherein: when the door plate body is in a closed state on the cabinet body, the gap between the outer side plate and the outer surface of the frame of the cabinet body is 2mm, and the gap between the inner side plate and the outer surface of the frame of the cabinet body is 8mm.
3. The high voltage switchgear door panel as claimed in claim 1, wherein: the sealing strip is a polyurethane sealing strip.
4. A high tension switchgear, characterized in that: the high-voltage switch cabinet door comprises the high-voltage switch cabinet door plate and a high-voltage switch cabinet body, wherein one side of the high-voltage switch cabinet door plate is connected to a side frame of the high-voltage switch cabinet body through a rotating hinge, and when the high-voltage switch cabinet door plate is in a closed state on the high-voltage switch cabinet body, the sealing strip is in contact sealing with the side frame of the high-voltage switch cabinet body.
5. The high voltage switchgear as claimed in claim 4, wherein: the high-voltage switch cabinet is characterized in that a breaker chamber and a high-voltage switch cabinet pressure relief channel are arranged in the high-voltage switch cabinet body, and when the breaker chamber is subjected to arcing explosion, the high-voltage switch cabinet pressure relief channel is used for discharging high-temperature and high-pressure gas generated by the explosion out of the cabinet through the U-shaped groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810808979.3A CN108736366B (en) | 2018-07-23 | 2018-07-23 | High tension switchgear door plant and high tension switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810808979.3A CN108736366B (en) | 2018-07-23 | 2018-07-23 | High tension switchgear door plant and high tension switchgear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108736366A CN108736366A (en) | 2018-11-02 |
| CN108736366B true CN108736366B (en) | 2023-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810808979.3A Active CN108736366B (en) | 2018-07-23 | 2018-07-23 | High tension switchgear door plant and high tension switchgear |
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| Country | Link |
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| CN (1) | CN108736366B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1915044A2 (en) * | 2006-10-21 | 2008-04-23 | Rockwell Automation Technologies, Inc. | Protective door system for enclosures resistant to high internal pressures |
| CN103062457A (en) * | 2013-01-04 | 2013-04-24 | 于波涛 | Gate type explosion-proof valve |
| CN106837119A (en) * | 2017-02-28 | 2017-06-13 | 扬州大学 | A kind of nuclear power station fire resistant doorsets smog retracting device |
| CN206619811U (en) * | 2017-04-20 | 2017-11-07 | 安徽广远电器有限公司 | A kind of explosion-proof cabinet door for high-voltage board |
| CN207633973U (en) * | 2017-12-12 | 2018-07-20 | 武汉市人防工程专用设备有限责任公司 | A kind of new type explosion proof door |
-
2018
- 2018-07-23 CN CN201810808979.3A patent/CN108736366B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1915044A2 (en) * | 2006-10-21 | 2008-04-23 | Rockwell Automation Technologies, Inc. | Protective door system for enclosures resistant to high internal pressures |
| CN103062457A (en) * | 2013-01-04 | 2013-04-24 | 于波涛 | Gate type explosion-proof valve |
| CN106837119A (en) * | 2017-02-28 | 2017-06-13 | 扬州大学 | A kind of nuclear power station fire resistant doorsets smog retracting device |
| CN206619811U (en) * | 2017-04-20 | 2017-11-07 | 安徽广远电器有限公司 | A kind of explosion-proof cabinet door for high-voltage board |
| CN207633973U (en) * | 2017-12-12 | 2018-07-20 | 武汉市人防工程专用设备有限责任公司 | A kind of new type explosion proof door |
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| Publication number | Publication date |
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| CN108736366A (en) | 2018-11-02 |
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