CN117239613A - Arc extinction switch cabinet - Google Patents
Arc extinction switch cabinet Download PDFInfo
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- CN117239613A CN117239613A CN202311062949.XA CN202311062949A CN117239613A CN 117239613 A CN117239613 A CN 117239613A CN 202311062949 A CN202311062949 A CN 202311062949A CN 117239613 A CN117239613 A CN 117239613A
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- switch cabinet
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- sealing
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- 230000008033 biological extinction Effects 0.000 title claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 72
- 230000000694 effects Effects 0.000 claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 238000005507 spraying Methods 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims description 33
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 30
- 230000001681 protective effect Effects 0.000 claims description 24
- 239000007921 spray Substances 0.000 claims description 21
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 15
- 239000001569 carbon dioxide Substances 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 230000001629 suppression Effects 0.000 claims 7
- 238000003466 welding Methods 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 6
- 239000012535 impurity Substances 0.000 abstract description 6
- 238000010891 electric arc Methods 0.000 abstract description 5
- 230000000712 assembly Effects 0.000 abstract description 2
- 238000000429 assembly Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 238000005192 partition Methods 0.000 description 7
- 230000006378 damage Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000005350 ferromagnetic resonance Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention discloses an arc extinction switch cabinet, which relates to the technical field of switch cabinets and comprises a switch cabinet and a pressure relief box fixedly arranged on the upper surface of the switch cabinet, wherein a pressure relief assembly is arranged in the pressure relief box, a sealing assembly connected with the pressure relief assembly is arranged on the upper surface of the pressure relief box, tensioning reset assemblies are arranged on two sides of the interior of the pressure relief box, and a spraying assembly connected with an extinguishing mechanism is arranged at the upper part in the switch cabinet. The invention can buffer and eliminate high-temperature high-pressure gas and the impact force of upward moving electric arc, effectively improve pressure relief and protection effects, ensure the safety of the switch cabinet and surrounding facility environments, realize the aim of double sealing the pressure relief groove, effectively prevent external dust impurities and rainwater from easily entering the switch cabinet through the pressure relief groove, and simultaneously, the fire extinguishing mechanism and the spraying assembly can timely extinguish the fire at the fire place in the switch cabinet, so that the fire can be timely restrained and controlled in the initial stage.
Description
Technical Field
The invention relates to the technical field of switch cabinets, in particular to an arc extinction switch cabinet.
Background
With the development of modern power grids, the gradual replacement of overhead lines with solid insulated cable lines is a necessary trend. The build-up of solid dielectric breakdown, the internal overvoltage, particularly the arc ground overvoltage generated when the single-phase intermittent arc ground occurs in the power grid and the ferroresonant overvoltage excited thereby, has become a great threat to the safe operation of such power grids, wherein the single-phase arc ground overvoltage is the most serious. The arc grounding overvoltage can saturate the voltage transformer, excite ferromagnetic resonance, cause the voltage transformer to be seriously overloaded, and cause the fuse to be fused or the transformer to be burnt out. Meanwhile, the arc grounding overvoltage has long duration, the energy is extremely easy to exceed the bearing capacity of the lightning arrester, so that the lightning arrester explodes, and in the running process of the switch cabinet, a primary circuit short circuit fault can be caused due to various reasons such as insulation aging, manual misoperation and the like, high-temperature and high-pressure gas is instantaneously generated under the short circuit current of tens of amperes, and if the high-temperature and high-pressure gas cannot be effectively released in extremely short time, the explosion of the switch cabinet, the damage to the adjacent switch cabinet and even the personal safety are possibly caused. Therefore, the switchgear must be designed with consideration for effective pressure relief measures.
At present, the existing pressure relief measures are mainly to release and relieve pressure to high-temperature and high-pressure gas generated instantaneously by arranging a hole groove on a cabinet body, however, the simple hole groove has a general protection effect, high-temperature and high-pressure gas discharged outwards through an empty groove is still likely to cause damage to facilities or personnel around the switch cabinet, so that certain potential safety hazards still exist in the pressure relief measures, the pressure relief hole groove is always in an open state, when the external severe environment is met, external dust impurities and rainwater easily enter the switch cabinet through the empty groove, certain influence is caused on the normal operation of components in the cabinet, and only simple pressure relief measures can be realized when high-temperature and high-pressure gas is generated in the switch cabinet, even if the internal of the cabinet still has very large possibility of catching fire after pressure relief, if timely control is not obtained, fire disaster is easy to happen, and unnecessary property loss is caused.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the arc-extinguishing switch cabinet which can buffer and eliminate the impact force of high-temperature high-pressure gas and upward moving electric arc so as to realize the aim of pressure relief and pressure reduction, effectively improve the pressure relief and protection effects, prevent damage to external facilities or personnel, ensure the safety of the switch cabinet and surrounding facility environments, realize the aim of double sealing the pressure relief groove, effectively prevent external dust impurities and rainwater from entering the switch cabinet easily through the pressure relief groove, ensure the normal operation of components in the cabinet, and simultaneously realize timely fire extinguishing treatment on the ignition place in the switch cabinet by the fire extinguishing mechanism and the spraying assembly, so that the ignition early stage can be timely restrained and controlled, the fire can be prevented from being further strengthened, unnecessary property loss can be effectively avoided, and the problems in the background art are solved.
In order to achieve the purposes of buffering and eliminating high-temperature high-pressure gas and impact force of upward moving electric arcs, so as to achieve the purposes of pressure relief and pressure reduction, effectively improve pressure relief and protection effects, prevent damage to external facilities or personnel, ensure safety of a switch cabinet and surrounding facility environments, and achieve the purpose of double sealing of pressure relief grooves, effectively prevent external dust impurities and rainwater from entering the switch cabinet through the pressure relief grooves, ensure normal operation of components in the cabinet, and simultaneously, timely fire extinguishing treatment can be carried out on a place on fire in the switch cabinet by a fire extinguishing mechanism and a spraying assembly, so that the fire can be timely restrained and controlled at the initial stage of fire, and unnecessary property loss can be effectively avoided, and the invention provides the following technical scheme: the arc extinction switch cabinet comprises a switch cabinet and a pressure relief box fixedly mounted on the upper surface of the switch cabinet, wherein a through hole is formed in the upper surface of the switch cabinet, the lower part of the pressure relief box is in an opening shape, the pressure relief box is communicated with the switch cabinet through the through hole, and a pressure relief assembly is mounted in the pressure relief box;
the upper surface of the pressure relief box is provided with a sealing component connected with the pressure relief component, and both sides of the interior of the pressure relief box are provided with tensioning reset components;
the upper portion fixed mounting of back wall has the protective housing in the cubical switchboard, the inside of protective housing is provided with fire extinguishing mechanism, the spraying subassembly of being connected with fire extinguishing mechanism is installed on upper portion in the cubical switchboard.
Preferably, a plurality of pressure release groove has been seted up to the upper surface of pressure release case, a plurality of the pressure release groove is linear array along the horizontal direction and distributes, spray the subassembly and include a plurality of fixed mounting in the fixed case at pressure release incasement top and a plurality of activity case, a plurality of the activity case peg graft respectively in a plurality of pressure release inslot, and a plurality of activity case butt respectively in one side of a plurality of fixed case, the interior roof fixed mounting of pressure release case has a plurality of baffle, the baffle butt is kept away from one side of fixed case in the activity case, and the lower surface of a plurality of activity case cup joints fixedly has the roof that is the level setting, and vertical slidable mounting is followed in the inside of pressure release case to the roof.
Preferably, the middle part in the fixed box is provided with a left baffle along the horizontal direction, the left baffle sequentially divides the inside of the fixed box into a left lower cavity and a left upper cavity from bottom to top, one sides of the left lower cavity and the left upper cavity, which are close to the movable box, are in an opening shape, and the lower side of the fixed box is welded with a lower baffle which is abutted to the outer side of the movable box.
Preferably, the inside of activity case has welded baffle and right side upper baffle down in proper order, baffle and right side upper baffle divide into cavity, right side cavity and right side upper cavity down in proper order with the inside of activity case down supreme, the lower part of cavity is the opening form under the right side, and the upper portion of cavity is close to one side of fixed case down under the right side and has seted up logical groove, the baffle is located the outside of logical groove down, the cavity is in the right side and one side that the cavity is close to the fixed case on the right side is the opening form.
Preferably, the sealing assembly comprises a sealing frame welded on the periphery of a plurality of pressure relief grooves and a sealing plugboard fixedly mounted on the upper surface of the movable box, a first sealing ring is fixedly sleeved on the periphery of the sealing plugboard, the sealing plugboard and the first sealing ring are spliced in the sealing frame, the upper surface of the sealing plugboard is fixedly provided with a sealing cover with an opening-shaped lower surface, the periphery of the lower surface of the sealing cover is fixedly provided with a second sealing ring, the sealing cover and the second sealing ring are sleeved on the outer part of the sealing frame, and the second sealing ring is abutted to the upper surface of the pressure relief box.
Preferably, the tensioning reset assembly comprises a lower limiting shaft and an upper limiting shaft which are welded on the upper surface of the top plate and the inner top wall of the pressure relief box respectively, the lower limiting shaft is located right above the upper limiting shaft, a tensioning spring is sleeved outside the lower limiting shaft and the upper limiting shaft, the upper end of the tensioning spring is abutted to the inner top wall of the pressure relief box, and the lower end of the tensioning spring is abutted to the upper surface of the top plate.
Preferably, the fire extinguishing mechanism comprises a dry powder storage tank and a carbon dioxide steel bottle which are fixedly arranged on two sides of the inside of the protective box, dry powder is filled in the dry powder storage tank, carbon dioxide gas is filled in the carbon dioxide steel bottle, an air duct is connected between the dry powder storage tank and the carbon dioxide steel bottle, an air valve is fixedly arranged on the air duct, a valve rod of the air valve extends forwards to the front face of the protective box, a deflector rod is fixedly arranged at the front end of the valve rod of the air valve, a drag hook is fixedly arranged on the lower surface of the top plate along the vertical direction, and a lower bent hook of the drag hook is sleeved on the outside of the deflector rod from bottom to top.
Preferably, the spray assembly comprises a powder outlet pipe which is fixedly inserted on the protective box and a spray pipe which is fixedly arranged inside the switch cabinet, one end of the powder outlet pipe is fixedly inserted inside the dry powder storage tank, the other end of the powder outlet pipe is fixedly connected with the spray pipe, the spray pipe is arranged right in front of the protective box along the horizontal direction, and a plurality of spray heads which are distributed in a linear array along the length direction are fixedly arranged on the outer surface of the spray pipe.
Advantageous effects
Compared with the prior art, the invention provides an arc extinction switch cabinet, which has the following beneficial effects:
1. this arc extinction cubical switchboard sets up through the cooperation of pressure release case, pressure release groove and pressure release subassembly, can cushion the elimination to the impact force of high temperature high pressure gas and upward movement electric arc to weaken the dynamics of upward striking, with the purpose of realizing pressure release decompression, and final exhaust high temperature high pressure gas and electric arc's impact force is weakened greatly, consequently can effectively improve pressure release and protective effect, prevent to cause the injury to outside facility or personnel, guarantee the safety of cubical switchboard and surrounding facilities environment.
2. This arc extinction cubical switchboard sets up through the cooperation of taut subassembly that resets and seal assembly, realizes carrying out dual sealed purpose to the pressure release groove, can prevent effectively that external dust impurity and rainwater from getting into the cubical switchboard through the pressure release groove easily in, reduces the clean frequency of work in later stage, guarantees the normal operating of components and parts in the cabinet, also can not cause the influence to the pressure release effect when improving the leakproofness moreover.
3. This arc extinction switch cabinet sets up through the cooperation of fire extinguishing mechanism with spray the subassembly, when the explosion of arrester and the components and parts in the switch cabinet take place to fire the trouble owing to arc light ground connection overvoltage in the switch cabinet, can spray the dry powder in the dry powder holding vessel to the inside components and parts of switch cabinet on to fire the place of catching fire in the switch cabinet carries out timely fire extinguishing treatment, makes the initial stage of catching fire just can obtain timely containment control, consequently can prevent that the fire situation from further strengthening, effectively avoids causing unnecessary loss of property.
Drawings
FIG. 1 is a schematic front perspective view of the present invention;
FIG. 2 is a schematic view of a partial structure with front cross-section of the present invention;
FIG. 3 is a schematic diagram of a front perspective view of a pressure relief box according to the present invention;
FIG. 4 is a schematic diagram of a front cross-sectional structure of a pressure relief tank of the present invention;
FIG. 5 is an enlarged schematic view of the structure of FIG. 4A according to the present invention;
FIG. 6 is a schematic diagram of a partial structure of a pressure relief box in front view and section during pressure relief according to the present invention;
FIG. 7 is a schematic side perspective view of the movable box of the present invention;
FIG. 8 is a schematic side perspective view of the stationary box of the present invention;
FIG. 9 is a schematic diagram of a front perspective view of a protective box according to the present invention;
FIG. 10 is a schematic view of a rear perspective structure of a protective box according to the present invention;
FIG. 11 is a schematic diagram of a side cross-sectional structure of a protective housing of the present invention;
FIG. 12 is a schematic rear view of the protective housing of the present invention.
In the figure: 1. a switch cabinet; 101. a through hole; 2. a pressure relief box; 201. a pressure relief groove; 3. a seal assembly; 301. a sealing frame; 302. sealing plugboards; 303. a first seal ring; 304. sealing cover; 305. a second seal ring; 4. a protective box; 5. a spray assembly; 501. a powder outlet pipe; 502. a spray tube; 503. a spray head; 6. tensioning the reset assembly; 601. a lower limit shaft; 602. an upper limit shaft; 603. tensioning the spring; 7. a fixed box; 701. a left side partition; 702. a left lower cavity; 703. a left upper cavity; 704. a lower baffle; 8. a movable box; 801. a right lower partition; 802. a right upper partition; 803. a right lower cavity; 804. a right hollow cavity; 805. a right upper cavity; 806. a through groove; 9. a fire extinguishing mechanism; 901. a dry powder storage tank; 902. a carbon dioxide steel cylinder; 903. an air duct; 904. an air valve; 905. a deflector rod; 10. a top plate; 11. a drag hook; 12. and a guide plate.
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.
Referring to fig. 1 to 8, an arc extinguishing switch cabinet of the present invention includes a switch cabinet 1 and a pressure relief box 2 fixedly installed on the upper surface of the switch cabinet 1, wherein a through hole 101 is formed on the upper surface of the switch cabinet 1, the lower portion of the pressure relief box 2 is in an opening shape, the pressure relief box 2 is communicated with the switch cabinet 1 through the through hole 101, and a pressure relief assembly is installed inside the pressure relief box 2;
the upper surface of the pressure relief box 2 is provided with a plurality of pressure relief grooves 201, the plurality of pressure relief grooves 201 are distributed in a linear array along the horizontal direction, the spraying assembly 5 comprises a plurality of fixed boxes 7 fixedly arranged at the inner top of the pressure relief box 2 and a plurality of movable boxes 8, the plurality of movable boxes 8 are respectively inserted into the plurality of pressure relief grooves 201, the plurality of movable boxes 8 are respectively abutted to one sides of the plurality of fixed boxes 7, the inner top wall of the pressure relief box 2 is fixedly provided with a plurality of guide plates 12, the guide plates 12 are abutted to one side, far away from the fixed boxes 7, of the movable boxes 8, the lower surface of the plurality of movable boxes 8 is sleeved and fixed with a top plate 10 which is horizontally arranged, and the top plate 10 is vertically slidably arranged in the pressure relief box 2;
the middle part in the fixed box 7 is fixedly provided with a left baffle 701 along the horizontal direction, the left baffle 701 sequentially divides the inside of the fixed box 7 into a left lower cavity 702 and a left upper cavity 703 from bottom to top, one sides of the left lower cavity 702 and the left upper cavity 703, which are close to the movable box 8, are opened, and a lower baffle 704 which is abutted against the outer side of the movable box 8 is welded on the lower side of the fixed box 7;
the inside of the movable box 8 is sequentially welded with a right lower partition plate 801 and a right upper partition plate 802 from bottom to top, the inside of the movable box 8 is sequentially divided into a right lower cavity 803, a right middle cavity 804 and a right upper cavity 805 from bottom to top by the right lower partition plate 801 and the right upper partition plate 802, the lower part of the right lower cavity 803 is in an opening shape, a through groove 806 is formed in one side, close to the fixed box 7, of the upper part of the right lower cavity 803, the lower baffle 704 is located on the outer side of the through groove 806, and one sides, close to the fixed box 7, of the right middle cavity 804 and the right upper cavity 805 are in an opening shape.
When the switch cabinet 1 is in specific use, when an arrester explodes due to arc grounding overvoltage and components and parts in the switch cabinet 1 have arcing faults, high-temperature and high-pressure gas and the upwardly moving arc can upwardly move into the pressure relief box 2 through the through hole 101 and upwardly push the top plate 10, the top plate 10 upwardly pushes the movable box 8 to upwardly slide between the fixed box 7 and the guide plate 12, so that the upper part of the movable box 8 upwardly draws the pressure relief box 2 through the pressure relief groove 201, meanwhile, the through groove 806 and the right lower baffle 801 just slide to the opening of the left lower cavity 702, the opening of the right middle cavity 804 also slides to the left baffle 701, the right upper baffle 802 also slides to the opening of the left upper cavity 703, and at the moment, the high-temperature and high-pressure gas and the upwardly moving arc in the switch cabinet 1 can enter the right lower cavity 803 through the lower opening of the right lower cavity 803, and enter the left lower cavity 702 through the through groove 806, and then pass through the right hollow cavity 804, the left upper cavity 703 and the right upper cavity 805 in turn to be discharged upwards out of the switch cabinet 1, and the discharging route is of an S shape, so that the impact force of high-temperature high-pressure gas and upward moving electric arcs can be buffered and eliminated by the left baffle 701, the right lower baffle 801 and the right upper baffle 802 in the discharging process, the upward impact force is weakened, the aim of pressure relief and pressure reduction is fulfilled, the impact force of the finally discharged high-temperature high-pressure gas and electric arcs is greatly weakened, the pressure relief and protection effects can be effectively improved, the damage to external facilities or personnel is prevented, and the safety of the switch cabinet 1 and surrounding facility environments is ensured.
As an embodiment of the present invention, referring to fig. 1 to 7, an arc extinguishing switch cabinet is disclosed, wherein a sealing assembly 3 connected with a pressure relief assembly is arranged on the upper surface of a pressure relief box 2, and tensioning reset assemblies 6 are arranged on both sides of the interior of the pressure relief box 2;
the sealing assembly 3 comprises a sealing frame 301 welded on the periphery of a plurality of pressure relief grooves 201 and a sealing plugboard 302 fixedly arranged on the upper surface of the movable box 8, a first sealing ring 303 is fixedly sleeved on the periphery of the sealing plugboard 302, the sealing plugboard 302 and the first sealing ring 303 are spliced in the sealing frame 301, a sealing cover 304 with an opening-shaped lower surface is fixedly arranged on the upper surface of the sealing plugboard 302, a second sealing ring 305 is fixedly arranged on the periphery of the lower surface of the sealing cover 304, the sealing cover 304 and the second sealing ring 305 are sleeved on the outer part of the sealing frame 301, and the second sealing ring 305 is abutted against the upper surface of the pressure relief box 2;
the tensioning reset assembly 6 comprises a lower limiting shaft 601 and an upper limiting shaft 602 which are welded on the upper surface of the top plate 10 and the inner top wall of the pressure relief box 2 respectively, the lower limiting shaft 601 is located right above the upper limiting shaft 602, a tensioning spring 603 is sleeved outside the lower limiting shaft 601 and the upper limiting shaft 602, the upper end of the tensioning spring 603 is abutted to the inner top wall of the pressure relief box 2, and the lower end of the tensioning spring 603 is abutted to the upper surface of the top plate 10.
When the pressure relief box is particularly used, the tensioning spring 603 arranged between the top plate 10 and the inner top wall of the pressure relief box 2 can tightly press the top plate 10 downwards, so that the top plate 10 tightens the movable box 8, the sealing plugboard 302 and the first sealing ring 303 can be inserted into the sealing frame 301 from top to bottom under the tightening of the movable box 8, the sealing plugboard 302 and the sealing frame 301 can be sealed by the first sealing ring 303, meanwhile, the sealing cover 304 and the second sealing ring 305 are sleeved outside the sealing frame 301 from top to bottom, and the sealing cover 304 and the sealing frame 301 can be sealed by the second sealing ring 305, so that the purpose of double sealing of the pressure relief groove 201 is realized, external dust and impurities and rainwater can be effectively prevented from entering the switch cabinet 1 through the pressure relief groove 201, the frequency of later cleaning work is reduced, the normal operation of components in the cabinet is ensured, and the pressure relief effect is not influenced while the sealing performance is improved.
As an embodiment of the present invention, referring to fig. 2 and 9 to 12, an arc extinguishing switch cabinet is disclosed, wherein a protective box 4 is fixedly installed at the upper part of the inner rear wall of the switch cabinet 1, a fire extinguishing mechanism 9 is arranged in the protective box 4, and a spraying assembly 5 connected with the fire extinguishing mechanism 9 is installed at the upper part of the switch cabinet 1;
the fire extinguishing mechanism 9 comprises a dry powder storage tank 901 and a carbon dioxide steel bottle 902 which are fixedly arranged at two sides of the inside of the protective box 4, dry powder is filled in the dry powder storage tank 901, carbon dioxide gas is filled in the carbon dioxide steel bottle 902, an air duct 903 is connected between the dry powder storage tank 901 and the carbon dioxide steel bottle 902, an air valve 904 is fixedly arranged on the air duct 903, a valve rod of the air valve 904 extends forwards to the front face of the protective box 4, a deflector rod 905 is fixedly arranged at the front end of the valve rod of the air valve 904, a drag hook 11 is fixedly arranged on the lower surface of the top plate 10 along the vertical direction, and a lower bent hook of the drag hook 11 is sleeved outside the deflector rod 905 from bottom to top;
the spray assembly 5 comprises a powder outlet pipe 501 which is inserted and fixed on the protective box 4 and a spray pipe 502 which is fixedly arranged in the switch cabinet 1, one end of the powder outlet pipe 501 is inserted and fixed in the dry powder storage tank 901, the other end of the powder outlet pipe 501 is fixedly connected with the spray pipe 502, the spray pipe 502 is arranged right in front of the protective box 4 along the horizontal direction, and a plurality of spray heads 503 which are distributed in a linear array along the length direction are fixedly arranged on the outer surface of the spray pipe 502.
When the high-temperature high-pressure gas and the upward moving electric arc are decompressed by pushing the top plate 10 upward, the top plate 10 also pulls the drag hook 11 to move upward synchronously, the upward moving drag hook 11 can pull the shift lever 905 upward through the lower hook of the upward moving drag hook, so that the valve rod on the air valve 904 is driven to rotate anticlockwise, the air valve 904 is opened, at the moment, high-pressure carbon dioxide gas in the carbon dioxide steel cylinder 902 enters the dry powder storage tank 901 through the air duct 903, so as to pressurize the dry powder storage tank 901, dry powder in the pressurized dry powder storage tank 901 can be discharged to the spraying pipe 502 through the powder outlet pipe 501 outwards, and finally sprayed to components in the switch cabinet 1 through the spray head 503, so that fire extinguishing treatment is carried out on a place on fire in the switch cabinet 1 in time, the early stage of fire can be timely restrained and controlled, and unnecessary property loss can be prevented.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides an arc extinction cubical switchboard, includes cubical switchboard and fixed mounting in cubical switchboard upper surface's pressure release case, its characterized in that: the upper surface of the switch cabinet is provided with a through hole, the lower part of the pressure relief box is in an opening shape, the pressure relief box is communicated with the switch cabinet through the through hole, and a pressure relief assembly is arranged in the pressure relief box;
the upper surface of the pressure relief box is provided with a sealing component connected with the pressure relief component, and both sides of the interior of the pressure relief box are provided with tensioning reset components;
the upper portion fixed mounting of back wall has the protective housing in the cubical switchboard, the inside of protective housing is provided with fire extinguishing mechanism, the spraying subassembly of being connected with fire extinguishing mechanism is installed on upper portion in the cubical switchboard.
2. An arc suppression switch cabinet according to claim 1, characterized in that: the upper surface of pressure release case has been seted up a plurality of pressure release groove, a plurality of the pressure release groove is linear array along the horizontal direction and distributes, spray the subassembly and include a plurality of fixed mounting in the fixed case at pressure release incasement top and a plurality of activity case, a plurality of the activity case peg graft respectively in a plurality of pressure release inslot, and a plurality of activity case butt respectively in one side of a plurality of fixed case, the interior roof fixed mounting of pressure release case has a plurality of baffle, the baffle butt is kept away from one side of fixed case in the activity case, and the lower surface of a plurality of activity case cup joints fixedly has the roof that is the level setting, and vertical slidable mounting is followed in the inside of pressure release case to the roof.
3. An arc suppression switch cabinet according to claim 2, characterized in that: the middle part in the fixed case is along horizontal direction fixed mounting there being left side baffle, and left side baffle divide into left side cavity down and left side upper cavity with the inside of fixed case from supreme in proper order down, left side cavity down and left side upper cavity are the opening form near one side of activity case, and the downside welding of fixed case has the lower baffle of butt in the activity case outside.
4. An arc suppression switch cabinet according to claim 3, characterized in that: the inside of activity case has welded baffle and right side upper baffle down in proper order from supreme, baffle and right side upper baffle divide into cavity, right side cavity and right side upper cavity down in proper order with the inside of activity case down, the lower part of cavity is the opening form under the right side, and the upper portion of cavity is close to one side of fixed case down under the right side and has seted up logical groove, the baffle is located the outside of logical groove down, cavity and right side upper cavity are the opening form near one side of fixed case in the right side.
5. An arc suppression switch cabinet according to claim 4, wherein: the sealing assembly comprises a sealing frame welded on the periphery of a plurality of pressure relief grooves and a sealing plugboard fixedly mounted on the upper surface of the movable box, a first sealing ring is fixedly sleeved on the periphery of the sealing plugboard, the sealing plugboard and the first sealing ring are spliced in the sealing frame, the upper surface of the sealing plugboard is fixedly provided with a sealing cover with an opening-shaped lower surface, the periphery of the lower surface of the sealing cover is fixedly provided with a second sealing ring, the sealing cover and the second sealing ring are sleeved on the outer part of the sealing frame, and the second sealing ring is abutted to the upper surface of the pressure relief box.
6. An arc suppression switch cabinet according to claim 1, characterized in that: the tensioning reset assembly comprises a lower limiting shaft and an upper limiting shaft which are welded on the upper surface of the top plate and the inner top wall of the pressure relief box respectively, the lower limiting shaft is located right above the upper limiting shaft, a tensioning spring is sleeved outside the lower limiting shaft and the upper limiting shaft, the upper end of the tensioning spring is abutted to the inner top wall of the pressure relief box, and the lower end of the tensioning spring is abutted to the upper surface of the top plate.
7. The arc suppression switch cabinet of claim 6 wherein: the fire extinguishing mechanism comprises a dry powder storage tank and a carbon dioxide steel bottle which are fixedly arranged on two sides of the interior of the protective box, dry powder is filled in the dry powder storage tank, carbon dioxide gas is filled in the carbon dioxide steel bottle, an air duct is connected between the dry powder storage tank and the carbon dioxide steel bottle, an air valve is fixedly arranged on the air duct, a valve rod of the air valve extends forward to the front face of the protective box, a deflector rod is fixedly arranged at the front end of the valve rod of the air valve, a drag hook is fixedly arranged on the lower surface of the top plate along the vertical direction, and a lower bent hook of the drag hook is sleeved on the exterior of the deflector rod from bottom to top.
8. The arc suppression switch cabinet of claim 7 wherein: the spraying assembly comprises a powder outlet pipe which is fixedly inserted on the protective box and a spraying pipe which is fixedly arranged inside the switch cabinet, one end of the powder outlet pipe is fixedly inserted inside the dry powder storage tank, the other end of the powder outlet pipe is fixedly connected with the spraying pipe, the spraying pipe is arranged right in front of the protective box along the horizontal direction, and a plurality of spray heads which are distributed in a linear array along the length direction are fixedly arranged on the outer surface of the spraying pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311062949.XA CN117239613B (en) | 2023-08-23 | 2023-08-23 | Arc extinction switch cabinet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311062949.XA CN117239613B (en) | 2023-08-23 | 2023-08-23 | Arc extinction switch cabinet |
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| CN117239613A true CN117239613A (en) | 2023-12-15 |
| CN117239613B CN117239613B (en) | 2024-04-05 |
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| CN117239613B (en) | 2024-04-05 |
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