CN114796936B - Electrical cabinet system capable of automatically realizing fire prevention and flame retardance - Google Patents
Electrical cabinet system capable of automatically realizing fire prevention and flame retardance Download PDFInfo
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- CN114796936B CN114796936B CN202210432691.7A CN202210432691A CN114796936B CN 114796936 B CN114796936 B CN 114796936B CN 202210432691 A CN202210432691 A CN 202210432691A CN 114796936 B CN114796936 B CN 114796936B
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
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Abstract
The invention discloses an autonomous fireproof flame-retardant electrical cabinet system, which comprises an electrical cabinet, wherein a vent hole array is hollowed out in the lower part of the rear side cabinet wall of the electrical cabinet, a negative pressure exhaust fan is fixedly arranged at the upper end of the cabinet wall of the electrical cabinet, and the negative pressure air inlet end of the negative pressure exhaust fan is connected with the upper end of the inner cavity of the electrical cabinet; the inner side of the lower part of the rear side cabinet wall is provided with a gravity air vent door in a parallel sliding manner, the gravity air vent door is hollowed with an air vent array, and each air vent on the air vent array is correspondingly communicated with each vent on the vent array; three necessary steps of fire extinguishment are simultaneously completed through one fusing trigger source, so that stable and reliable fire extinguishment is ensured.
Description
Technical Field
The invention belongs to the field of fire prevention and flame retardance of electrical cabinets.
Background
To realize active fire extinguishing based on carbon dioxide, the electrical cabinet must have three processes to ensure fire extinguishing, firstly, the ventilation holes at the bottom of the cabinet body are closed to avoid the injected carbon dioxide escaping from the bottom of the cabinet body; secondly, the power supply is cut off, so that a heating source generated in a short circuit state is cut off; thirdly, opening a valve of the carbon dioxide fire extinguishing device; in the existing fireproof structure, the three processes cannot be completed simultaneously through one trigger source.
Disclosure of Invention
The invention aims to: in order to overcome the defects in the prior art, the invention provides an electrical cabinet system capable of realizing fire prevention and flame retardance independently, and three necessary steps of fire extinguishment can be completed through one trigger source.
The technical scheme is as follows: in order to achieve the aim, the electric cabinet system capable of automatically achieving fire prevention and flame retardation comprises an electric cabinet, wherein a vent hole array is arranged on the lower part of the rear side cabinet wall of the electric cabinet in a hollowed-out manner, a negative pressure exhaust fan is fixedly arranged at the upper end of the cabinet wall of the electric cabinet, and the negative pressure air inlet end of the negative pressure exhaust fan is communicated with the upper end of an inner cavity of the electric cabinet;
the inner side of the lower part of the rear side cabinet wall is provided with a gravity air vent door in a parallel sliding manner, the gravity air vent door is hollowed with an air vent array, and each air vent on the air vent array is correspondingly communicated with each vent on the vent array;
the lower end of the gravity air ventilation door and the bottom wall of the electric cabinet are provided with a landing interval, and the gravity air ventilation door also comprises a fire trigger rope which is connected with the gravity air ventilation door in a hanging manner, and the fire trigger rope is fused when encountering open fire; when the fire trigger rope is fused, the gravity vent door automatically descends to contact the bottom wall under the action of gravity, so that the air guide hole array and the vent hole array are staggered.
Further, hole seats are fixedly arranged at the two ends of the gravity vent door, and vertical guide holes are formed in the hole seats; the guide hole is vertically movably penetrated through the guide holes, and the lower ends of the guide rods are fixedly connected with the bottom wall.
Further, fire trigger ropes are uniformly distributed on the inner side of the rear cabinet wall, the fire trigger ropes are of a loop-back zigzag fusible rope structure formed by connecting a plurality of transverse sections and longitudinal sections end to end, and the connection parts of the transverse sections and the longitudinal sections of the fire trigger ropes are crossed by a fixed pulley; the brackets of the fixed pulleys are fixed on the inner side of the rear cabinet wall; the lower end of the hanging section is connected with the gravity vent door in a hanging mode, the whole fire trigger rope which is bent in a loop is in a tightening state under the action of gravity of the gravity vent door, when the fire trigger rope is fused, the tension of the hanging section is automatically relieved, and the gravity vent door automatically descends to contact the bottom wall under the action of gravity, so that the air guide hole array and the vent hole array are staggered; the fire disaster triggering rope is characterized in that one section of the uppermost end of the fire disaster triggering rope is a vertical tension section, a fire extinguishing power-off excitation unit is arranged on the lower side of the top of the electric cabinet, the upper end of the tension section is connected with the fire extinguishing power-off excitation unit, when the tension of the tension section is relieved due to fusing of the fire disaster triggering rope, the fire extinguishing power-off excitation unit is excited, when the fire extinguishing power-off excitation unit is excited, the power supply live wire of the electric cabinet can be automatically disconnected, and the fire extinguishing unit automatically injects low-temperature carbon dioxide into the inner cavity of the electric cabinet.
Further, the fire trigger rope is polyolefin fiber spun by linear polyethylene materials.
Further, the fire extinguishing unit comprises a liquid carbon dioxide fire extinguishing bottle fixedly installed through a support, and the upper end of a delivery pipe of the liquid carbon dioxide fire extinguishing bottle is connected with a valve; the inside of the valve is provided with a cylindrical valve cavity with a transverse axis, and the cylindrical valve cavity is vertically communicated with the carbon dioxide guide channel; the side part of the valve is integrally provided with a pipe sleeve coaxial with the cylindrical valve cavity;
the fire extinguishing power-off excitation unit comprises an excitation disc which is positioned at the top of the inner cavity of the electric cabinet and is coaxial with the cylindrical valve cavity, and two ends of the excitation disc are respectively and coaxially connected with a first shaft and a second shaft in an integrated manner; the outer wall of one end of the first shaft is in coaxial rotary fit with the inner wall of the sleeve through a sealing ring; the carbon dioxide gas guide channel is coaxially communicated with the inside of the integrated structure formed by the first shaft, the excitation disc and the second shaft, two ends of the carbon dioxide gas guide channel are respectively provided with an inlet and an outlet, the outlet is connected with the inner cavity of the electrical cabinet, and the inlet is communicated with the cylindrical valve cavity;
the end part of the first shaft is coaxially and integrally connected with a semi-cylindrical valve core, the semi-cylindrical valve core coaxially moves in a cylindrical valve cavity, and the outer cambered surface of the semi-cylindrical valve core seals the upper end of the carbon dioxide guide channel; when the semi-cylindrical valve core rotates more than 90 degrees and is lower than 270 degrees, the extrados of the semi-cylindrical valve core is separated from the upper end of the carbon dioxide leading-out channel, so that the carbon dioxide leading-out channel is communicated with the leading-in port.
Further, the outer wall of the left half part of the excitation disc is integrally provided with a plurality of insulation transmission gear bodies along the arc direction, the excitation disc and the insulation transmission gear bodies are made of hard insulation materials, and the outer cambered surface of the right half part of the excitation disc is an insulation cambered surface;
one insulating transmission gear body at the middle height of the plurality of insulating transmission gear bodies is denoted as an A insulating transmission gear body, and the middle part of each insulating transmission gear body lower than the A insulating transmission gear body in the tooth width direction is provided with a rope penetrating groove; the upper end of the tension section of the fire trigger rope upwards passes through each rope passing groove and is fixedly connected with the root of the lower side tooth of the A insulating transmission tooth body; the tension section generates a counterclockwise torque for the excitation disk; the method comprises the steps that one insulated transmission gear body at the anticlockwise end in the direction of an arc array is marked as a B insulated transmission gear body, and the B insulated transmission gear body is divided into a first half gear body a and a second half gear body B by a rope penetrating through a groove; an arc groove is formed in the clockwise end of the insulation cambered surface along the arc direction, a first copper contact piece and a second copper contact piece are respectively and integrally bent at one side, close to the B insulation transmission tooth body, of the arc copper sheet in the arc groove in a gluing manner along the arc direction, and the first copper contact piece and the second copper contact piece are respectively glued and laminated on the side surfaces, close to one side of the arc groove, of the first half tooth body a and the second half tooth body B;
the electrical cabinet power supply live wire comprises a first section of wire and a second section of wire, one end of the first section of wire and one end of the second section of wire are respectively fixed and electrically connected with a first copper contact and a second copper contact, and the first copper contact and the second copper contact are respectively fixed on a first insulation base and a second insulation base; the first insulating base and the second insulating base are fixed on the electric cabinet body through insulating supports; the first copper contact and the second copper contact are respectively provided with a first pressure contact surface and a second pressure contact surface on one side surface close to the first copper contact and the second copper contact, and the first pressure contact surface and the second pressure contact surface are respectively in limit contact with the first copper contact and the second copper contact under the action of torque of a tensile section on the anticlockwise direction of the excitation disc, so that anticlockwise rotation of the excitation disc is prevented, the excitation disc is ensured to be in a stable state, and the first section of conducting wire and the second section of conducting wire are electrically connected under the action of electric conduction of the arc-shaped copper sheet; the tail end surfaces of the first copper contact and the second copper contact are respectively a first sliding surface and a second sliding surface, and the first sliding surface and the second sliding surface are in sliding fit with the arc-shaped copper sheet; the upper part of the excitation disc is also provided with a rack extending along the left-right direction, the rack is meshed with a transmission gear body on the excitation disc, the right end of the rack is fixedly connected with a slide bar along the length direction, the top wall of the electrical cabinet is also fixedly provided with a slide bar guide hole seat, the slide bar guide hole seat is provided with a transversely-through slide bar through hole, the tail end of the slide bar slides through the slide bar through hole, the slide bar is sleeved with a pull-back spring, the pull-back spring is in a stretching state, the two ends of the pull-back spring are respectively fixedly connected with the rack and the slide bar guide hole seat, so that the pull-back spring forms a rightward pulling force on the rack, the rack forms a clockwise torque on the excitation disc, and the clockwise torque on the excitation disc is insufficient to overcome the pulling force section to generate a counterclockwise torque on the excitation disc; so that the first pressure contact surface and the second pressure contact surface respectively form a jacking force with the contacted first copper contact piece and second copper contact piece; when the pulling force of the pulling force section is released, the rack forms a clockwise torque on the excitation disk, so that the excitation disk is driven to rotate clockwise by 90-180 degrees.
Further, a bearing seat is fixedly arranged on the lower side of the top wall of the electric cabinet, and the outer wall of the second shaft is rotatably arranged on the bearing seat through a bearing.
Furthermore, the excitation disk and the insulating transmission gear body are both made of insulating ceramic or flame-retardant nylon.
The beneficial effects are that: the invention has simple structure, and can simultaneously complete the following three steps by one fusing trigger source, thereby ensuring stable and reliable fire extinguishment; the three steps completed simultaneously are as follows: firstly, closing a ventilation hole at the bottom of the cabinet body to prevent injected carbon dioxide from escaping from the bottom of the cabinet body; second, the power supply is cut off, so that the heating source generated in the short circuit state is cut off; and thirdly, opening a valve of the carbon dioxide fire extinguishing device, and injecting carbon dioxide to extinguish fire.
Drawings
FIG. 1 is a front view of the present device;
FIG. 2 is a schematic perspective view of the device;
FIG. 3 is a front cross-sectional view of the present device;
FIG. 4 is an enlarged schematic view of the lower portion of FIG. 3;
FIG. 5 is a cross-sectional view of FIG. 4;
FIG. 6 is a schematic diagram of a fire extinguishing power-off excitation unit;
FIG. 7 is an enlarged schematic view of the article of FIG. 6 at 34;
FIG. 8 is a schematic perspective view of FIG. 6;
FIG. 9 is a schematic view of the first copper contact and the second copper contact of FIG. 8 after separation;
FIG. 10 is another schematic view from the perspective of FIG. 9;
FIG. 11 is a schematic diagram of the mating of a first copper contact and a second copper contact with a first copper contact and a second copper contact;
FIG. 12 is a schematic view of FIG. 11 in exploded form;
FIG. 13 is a first cross-sectional view of the valve;
fig. 14 is a second cross-sectional view of the valve.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
The electrical cabinet system capable of automatically realizing fire prevention and flame retardation as shown in the accompanying drawings 1 to 14 comprises an electrical cabinet 1, wherein a vent hole array 5 is arranged on the lower part of the rear side cabinet wall 1.1 of the electrical cabinet 1 in a hollowed-out manner, a negative pressure exhaust fan 2 is fixedly arranged at the upper end of the cabinet wall of the electrical cabinet 1, and the negative pressure inlet end of the negative pressure exhaust fan 2 is connected with the upper end of an electrical cabinet inner cavity 6 of the electrical cabinet 1; when the negative pressure exhaust fan 2 is started, the negative pressure exhaust fan 2 is used for exhausting hot air in the inner cavity 6 of the electrical cabinet, and negative pressure is formed in the inner cavity 6 of the electrical cabinet, so that external air continuously enters the inner cavity 6 of the electrical cabinet through each vent hole array 5, and the aim of forced heat dissipation is fulfilled;
the inner side of the lower part of the rear side cabinet wall 1.1 is provided with a gravity air ventilation door 10 in a parallel sliding manner, the gravity air ventilation door 10 is hollowed with an air vent array 11, and each air vent on the air vent array 11 is correspondingly communicated with each vent on the vent array 5;
a landing space 12 is arranged between the lower end of the gravity air door 10 and the bottom wall 1.2 of the electric cabinet 1, and the fire disaster triggering rope 8 is hung and connected with the gravity air door 10, and the fire disaster triggering rope 8 is fused when encountering open fire; when the fire trigger rope 8 melts, the gravity vent door 10 automatically descends to contact the bottom wall 1.2 under the action of gravity, so that the air vent array 11 is staggered from the vent array 5.
As shown in fig. 3, the fire trigger ropes 8 are uniformly distributed on the inner side of the rear side cabinet wall 1.1, and the fire trigger ropes 8 are of a loop-back zigzag fusible rope structure formed by connecting a plurality of transverse sections and longitudinal sections end to end, so that the fire trigger ropes 8 are uniformly distributed on the inner side of the rear side cabinet wall 1.1, the fire trigger ropes 8 are fused smoothly when the fire is on any position in the inner cavity 6 of the electrical cabinet, and the sensitivity of fire identification is improved; the connection part of each transverse section and the longitudinal section of the fire trigger rope 8 is spanned with a fixed pulley 9; the brackets of the fixed pulleys 9 are fixed on the inner side of the rear cabinet wall 1.1; the section of the lowest end of the fire trigger rope 8 is a vertical suspension section 8.2, the lower end of the suspension section 8.2 is suspended and connected with a gravity air vent 10, the whole fire trigger rope 8 which is bent in a loop is in a tight state under the gravity action of the gravity air vent 10, when the fire trigger rope 8 is fused, the tension of the suspension section 8.2 is automatically relieved, and the gravity air vent 10 automatically descends to be in contact with the bottom wall 1.2 under the gravity action, so that the air vent array 11 and the vent array 5 are staggered; the one section that fire triggers rope 8 uppermost is vertical pulling force section 8.1, and the top downside of regulator cubicle 1 is equipped with puts out a fire outage excitation unit 7, and pulling force section 8.1 upper end is connected and is put out a fire outage excitation unit 7, and when pulling force section 8.1 was relieved because of fusing to fire triggering rope 8, the outage excitation unit that puts out a fire 7 was stimulated, and when putting out a fire 7 was stimulated, can automatic disconnection regulator cubicle power live wire 87, and put out a fire the unit and pour into cryogenic carbon dioxide into in regulator cubicle inner chamber 6 automatically.
The fire trigger rope 8 is polyolefin fiber spun by linear polyethylene material, the melting temperature is 124-138 ℃, and the material of the fire trigger rope 8 can be selected from other materials.
As shown in fig. 1, the fire extinguishing unit comprises a liquid carbon dioxide fire extinguishing bottle 3 fixedly installed through a support 4, and a valve 19 is connected to the upper end of a delivery pipe 23 of the liquid carbon dioxide fire extinguishing bottle 3; a vertical carbon dioxide guide channel 22 is arranged in the guide pipe 23;
as in fig. 13 and 14; a cylindrical valve cavity 18 with a transverse axis is arranged in the valve 19, and the cylindrical valve cavity 18 is vertically communicated with a carbon dioxide guide-out channel 22; the side part of the valve 19 is integrally provided with a pipe sleeve 80 coaxial with the cylindrical valve cavity 18;
as in fig. 6 to 12; the fire extinguishing power-off excitation unit 7 comprises an excitation disc 32 which is positioned at the top of the inner cavity 6 of the electrical cabinet and is coaxial with the cylindrical valve cavity 18, and two ends of the excitation disc 32 are respectively and coaxially connected with a first shaft 16 and a second shaft 31 in an integrated manner; an outer wall of one end of the first shaft 16 is coaxially matched with a sleeve inner wall 81 of the sleeve 80 in a rotating way through a sealing ring; a carbon dioxide gas guide channel 70 which is coaxially communicated with the inside of the integrated structure formed by the first shaft 16, the excitation disc 32 and the second shaft 31, wherein two ends of the carbon dioxide gas guide channel 70 are respectively provided with an inlet 17 and an outlet 33, the outlet 33 is communicated with the inner cavity 6 of the electrical cabinet, and the inlet 17 is communicated with the cylindrical valve cavity 18;
as in fig. 13 and 14; the end part of the first shaft 16 is coaxially and integrally connected with a semi-cylindrical valve core 21, the semi-cylindrical valve core 21 moves coaxially in the cylindrical valve cavity 18, and an outer cambered surface 20 of the semi-cylindrical valve core 21 seals the upper end of a carbon dioxide guide-out channel 22; as can be seen from fig. 13 and 4, when the half-cylindrical spool 21 rotates more than 90 ° along the axis and less than 270 ° of the interval, the extrados 20 of the half-cylindrical spool 21 is separated from the upper end of the carbon dioxide outlet passage 22, so that the carbon dioxide outlet passage 22 communicates with the inlet 17.
As in fig. 9 and 10; the outer wall of the left half part of the excitation disc 32 is integrally provided with a plurality of insulation transmission gear bodies 30 along the arc direction, the excitation disc 32 and the insulation transmission gear bodies 30 are made of hard insulation materials, and the outer cambered surface of the right half part of the excitation disc 32 is an insulation cambered surface 47; the excitation disk 32 and the insulated driving gear body 30 of this embodiment are both made of insulating ceramic or flame retardant nylon.
One insulating transmission gear body 30 at the middle height of the plurality of insulating transmission gear bodies 30 is denoted as an A insulating transmission gear body 30.1, and the middle part of each insulating transmission gear body 30 in the tooth width direction lower than the A insulating transmission gear body 30.1 is provided with a rope penetrating groove 45; the upper end of the tension section 8.1 of the fire trigger rope 8 passes through each rope passing groove 45 upwards and is fixedly connected with the root of the lower side tooth of the A insulation transmission tooth body 30.1; the tension section 8.1 produces a counterclockwise torque on the excitation disk 32;
the insulated transmission gear body 30 at the anticlockwise end along the direction of the circular arc array is denoted as B insulated transmission gear body 30.3, and the B insulated transmission gear body 30.3 is divided into a first half gear body 30.3a and a second half gear body 30.3B by a rope penetrating through the groove 45;
an arc groove 46 is formed in the clockwise end of the insulation cambered surface 47 along the arc direction, a first copper contact piece 38 and a second copper contact piece 39 are respectively and integrally bent at one side, close to the B insulation transmission gear body 30.3, of the arc copper sheet 37 glued and bonded in the arc direction in the arc groove 46, and the first copper contact piece 38 and the second copper contact piece 39 are respectively glued and bonded on the side surfaces, close to the arc groove 46, of the first half gear body 30.3a and the second half gear body 30.3B;
the electrical cabinet power live wire 87 comprises a first section of wire 43 and a second section of wire 44, one end of the first section of wire 43 and one end of the second section of wire 44 are respectively fixed and electrically connected with a first copper contact 35 and a second copper contact 36, and the first copper contact 35 and the second copper contact 36 are respectively fixed on a first insulation base 40 and a second insulation base 41; the first insulating base 40 and the second insulating base 41 are fixed on the cabinet body of the electrical cabinet 1 through insulating brackets 42; the side surfaces of the first copper contact 35 and the second copper contact 36, which are close to the first copper contact 38 and the second copper contact 39, are respectively a first pressure contact surface 35.1 and a second pressure contact surface 35.1, and under the action of torque of the tension section 8.1 to the anticlockwise direction of the excitation disc 32, the first pressure contact surface 35.1 and the second pressure contact surface 35.1 are respectively in limit contact with the first copper contact 38 and the second copper contact 39, so that anticlockwise rotation of the excitation disc 32 is prevented, the excitation disc 32 is ensured to be in a stable state, and the first section of conducting wire 43 and the second section of conducting wire 44 are electrically connected under the conduction action of the arc copper sheet 37;
the end surfaces of the first copper contact 35 and the second copper contact 36 are a first sliding surface 35.2 and a second sliding surface 36.2 respectively, and the first sliding surface 35.2 and the second sliding surface 36.2 are in sliding fit with the arc-shaped copper sheet 37;
the upper part of the excitation disc 32 also comprises a rack 24 extending along the left-right direction, the rack 24 is meshed with a transmission gear body 30 on the excitation disc 32, the right end of the rack 24 is fixedly connected with a slide bar 26 along the length direction, the top wall of the electric cabinet 1 is also fixedly provided with a slide bar guide hole seat 28, the slide bar guide hole seat 28 is provided with a transversely-through slide bar through hole 60, the tail end of the slide bar 26 slides through the slide bar through hole 60, the slide bar 26 is sleeved with a pull-back spring 27, the pull-back spring 27 is in a stretching state, and the two ends of the pull-back spring 27 are respectively fixedly connected with the rack 24 and the slide bar guide hole seat 28, so that the pull-back spring 27 forms a rightward pulling force on the rack 24, further the rack 24 forms a clockwise torque on the excitation disc 32, and the rack 24 forms a clockwise torque on the excitation disc 32, so that the torque on the pull-back section 8.1 is insufficient to generate a counterclockwise torque on the excitation disc 32; so that the first pressure contact surface 35.1 and the second pressure contact surface 35.1 form a pressing force with the contacted first copper contact piece 38 and second copper contact piece 39 respectively; thereby effectively preventing the problem of poor contact and ensuring that the live wire 87 of the power supply of the electrical cabinet is in a stable conduction state in a normal working state;
when the tension in the tension section 8.1 is released, the rack 24 generates a clockwise torque on the energizing disc 32 which drives the energizing disc 32 to rotate clockwise 90 ° to 180 °; the control of the angle can be achieved by controlling the amount of tensile deformation of the return spring 27 in advance.
The bearing seat 25 is fixedly arranged on the lower side of the top wall of the electric cabinet 1, and the outer wall of the second shaft 31 is rotatably arranged on the bearing seat 25 through a bearing 29;
the process when the fire disaster occurs due to short circuit in the cabinet body:
because the fire trigger rope 8 is a loop-shaped flexible rope structure which is formed by connecting a plurality of transverse sections and longitudinal sections end to end and is easy to melt when encountering fire, the fire trigger rope 8 is uniformly arranged on the inner side of the rear side cabinet wall 1.1, when any position in the inner cavity 6 of the electrical cabinet catches fire, the fire trigger rope 8 can be fused smoothly, as long as the fire trigger rope 8 at any position is fused, the tension of the hanging section 8.2 of the fire trigger rope 8 is automatically released, the gravity ventilation door 10 automatically descends to contact the bottom wall 1.2 under the action of gravity, thereby staggering the air hole array 11 and the ventilation hole array 5, further ensuring that the ventilation hole array 5 is in a closed state, avoiding the escape of carbon dioxide injected subsequently through the ventilation hole array 5, and simultaneously, the tension of the tension section 8.1 of the fire trigger rope 8 is also automatically released, when the pulling force of the pulling force section 8.1 is released, under the pulling back action of the pulling back spring 27, the rack 24 drives the exciting disc 32 to form a clockwise torque to drive the exciting disc 32 to rotate 90-180 degrees clockwise, and when the exciting disc 32 rotates 90-180 degrees clockwise, the extrados 20 of the semi-cylindrical valve core 21 is separated from the upper end of the carbon dioxide guiding channel 22 to enable the carbon dioxide guiding channel 22 to be communicated with the inlet 17, so that the outlet 33 of the carbon dioxide guiding channel 70 continuously injects low-temperature carbon dioxide into the electrical cabinet inner cavity 6 of the electrical cabinet 1, and as the density of the carbon dioxide is greater than that of air, the vent hole array 5 is also in a closed state, the carbon dioxide entering the electrical cabinet inner cavity 6 can be gradually accumulated into the electrical cabinet inner cavity 6, thereby playing a role of continuous carbon dioxide flame retarding and cooling; at the same time, when the excitation disk 32 rotates clockwise by 90 ° to 180 °, the first copper contact piece 38 and the second copper contact piece 39 will also move along with the excitation disk 32, so that the first copper contact piece 38 and the second copper contact piece 39 are separated from the first copper contact 35 and the second copper contact 36, and at this time, the first sliding surface 35.2 and the second sliding surface 36.2 of the first copper contact 35 and the second copper contact 36 slide from the convex surface of the arc copper sheet 37 onto the insulating cambered surface 47, so that the first section of conducting wire 43 and the second section of conducting wire 44 are changed from the original electrical connection to the disconnection state, and all the electrical components of the electrical cabinet 1 are in the non-energized state, thereby avoiding the occurrence of the short circuit phenomenon.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (5)
1. The utility model provides an autonomously realize fire prevention fire-retardant regulator cubicle system, includes regulator cubicle (1), the lower part fretwork of rear side cabinet wall (1.1) of regulator cubicle (1) is provided with ventilation hole array (5), cabinet wall upper end fixed mounting of regulator cubicle (1) has negative pressure air exhauster (2), the negative pressure air inlet end of negative pressure air exhauster (2) communicates regulator cubicle inner chamber (6) upper end of regulator cubicle (1);
the method is characterized in that: the gravity air ventilation door (10) is arranged on the inner side of the lower part of the rear side cabinet wall (1.1) in a parallel sliding manner, an air guide hole array (11) is hollowed out on the gravity air ventilation door (10), and all air guide holes on the air guide hole array (11) are correspondingly communicated with all air holes on the air hole array (5);
an falling distance (12) is arranged between the lower end of the gravity air ventilation door (10) and the bottom wall (1.2) of the electrical cabinet (1), the fire disaster triggering rope (8) is hung and connected with the gravity air ventilation door (10), and the fire disaster triggering rope (8) is fused when encountering open fire; when the fire trigger rope (8) is fused, the gravity air ventilation door (10) automatically descends to be in contact with the bottom wall (1.2) under the action of gravity, so that the air guide hole array (11) is staggered with the air ventilation hole array (5);
the fire trigger ropes (8) are uniformly distributed on the inner side of the rear cabinet wall (1.1), the fire trigger ropes (8) are of a loop-back zigzag fusible rope structure formed by connecting a plurality of transverse sections and longitudinal sections end to end, and the connection parts of the transverse sections and the longitudinal sections of the fire trigger ropes (8) are spanned by a fixed pulley (9); the fire disaster triggering rope (8) is characterized in that one section of the lowest end of the fire disaster triggering rope (8) is a vertical hanging section (8.2), the lower end of the hanging section (8.2) is connected with the gravity air ventilation door (10) in a hanging mode, the whole fire disaster triggering rope (8) which is bent in a loop is in a tightening mode under the action of gravity of the gravity air ventilation door (10), when the fire disaster triggering rope (8) is fused, the tension of the hanging section (8.2) is automatically relieved, and the gravity air ventilation door (10) automatically descends to be in contact with the bottom wall (1.2) under the action of gravity, so that the air guide hole array (11) and the ventilation hole array (5) are staggered; the fire disaster triggering rope is characterized in that one section of the uppermost end of the fire disaster triggering rope (8) is a vertical tension section (8.1), a fire extinguishing power-off excitation unit (7) is arranged on the lower side of the top of the electrical cabinet (1), the upper end of the tension section (8.1) is connected with the fire extinguishing power-off excitation unit (7), when the tension of the tension section (8.1) is relieved due to fusing of the fire disaster triggering rope (8), the fire extinguishing power-off excitation unit (7) is excited, when the fire extinguishing power-off excitation unit (7) is excited, a power supply live wire (87) of the electrical cabinet can be automatically disconnected, and the fire extinguishing unit automatically injects low-temperature carbon dioxide into an inner cavity (6) of the electrical cabinet;
the fire extinguishing unit comprises a liquid carbon dioxide fire extinguishing bottle (3) fixedly installed through a support (4), and the upper end of a delivery pipe (23) of the liquid carbon dioxide fire extinguishing bottle (3) is connected with a valve (19); a vertical carbon dioxide guide-out channel (22) is arranged in the guide-out pipe (23), a cylindrical valve cavity (18) with a transverse axis is arranged in the valve (19), and the cylindrical valve cavity (18) is vertically communicated with the carbon dioxide guide-out channel (22); a pipe sleeve (80) coaxial with the cylindrical valve cavity (18) is integrally arranged on the side part of the valve (19);
the fire extinguishing power-off excitation unit (7) comprises an excitation disc (32) which is positioned at the top of the inner cavity (6) of the electric cabinet and is coaxial with the cylindrical valve cavity (18), and two ends of the excitation disc (32) are respectively and coaxially connected with a first shaft (16) and a second shaft (31) in an integrated manner; the outer wall of one end of the first shaft (16) is coaxially matched with the inner wall (81) of the sleeve (80) in a rotating way through a sealing ring; a carbon dioxide gas guide channel (70) coaxially penetrating through the inside of an integrated structure formed by the first shaft (16), the excitation disc (32) and the second shaft (31), wherein two ends of the carbon dioxide gas guide channel (70) are respectively provided with an inlet (17) and an outlet (33), the outlet (33) is communicated with an inner cavity (6) of the electrical cabinet, and the inlet (17) is communicated with the cylindrical valve cavity (18);
the end part of the first shaft (16) is coaxially and integrally connected with a semi-cylindrical valve core (21), the semi-cylindrical valve core (21) moves coaxially in the cylindrical valve cavity (18), and an extrados surface (20) of the semi-cylindrical valve core (21) seals the upper end of the carbon dioxide leading-out channel (22); when the semi-cylindrical valve core (21) rotates more than 90 degrees and is lower than 270 degrees, the extrados (20) of the semi-cylindrical valve core (21) is separated from the upper end of the carbon dioxide leading-out channel (22), so that the carbon dioxide leading-out channel (22) is communicated with the leading-in port (17);
the outer wall of the left half part of the excitation disc (32) is integrally provided with a plurality of insulating transmission gear bodies (30) along the arc direction, the excitation disc (32) and the insulating transmission gear bodies (30) are made of hard insulating materials, and the outer arc surface of the right half part of the excitation disc (32) is an insulating arc surface (47);
one insulating transmission gear body (30) at the middle height of the plurality of insulating transmission gear bodies (30) is denoted as an A insulating transmission gear body (30.1), and a rope penetrating groove (45) is formed in the middle of each insulating transmission gear body (30) lower than the A insulating transmission gear body (30.1) in the tooth width direction; the upper end of a tension section (8.1) of the fire trigger rope (8) upwards penetrates through each rope penetrating groove (45) and is fixedly connected to the root of the lower side tooth of the A insulation transmission tooth body (30.1); the tension section (8.1) generates a counterclockwise torque on the excitation disk (32); one insulating transmission tooth body (30) at the anticlockwise end in the direction of the circular arc array is marked as a B insulating transmission tooth body (30.3), and the wire rope passes through the groove (45) to divide the B insulating transmission tooth body (30.3) into a first half tooth body (30.3 a) and a second half tooth body (30.3B); an arc groove (46) is formed in the clockwise end of the insulation cambered surface (47) along the arc direction, one side, close to the B insulation transmission tooth body (30.3), of the arc copper sheet (37) is glued and bonded in the arc direction, a first copper contact piece (38) and a second copper contact piece (39) are respectively and integrally bent, and the first copper contact piece (38) and the second copper contact piece (39) are respectively glued and bonded on the side surfaces, close to one side of the arc groove (46), of the first half tooth body (30.3 a) and the second half tooth body (30.3B);
the electrical cabinet power live wire (87) comprises a first section of wire (43) and a second section of wire (44), one end of the first section of wire (43) and one end of the second section of wire (44) are respectively fixed and electrically connected with a first copper contact (35) and a second copper contact (36), and the first copper contact (35) and the second copper contact (36) are respectively fixed on a first insulating base (40) and a second insulating base (41); the first insulation base (40) and the second insulation base (41) are fixed on the cabinet body of the electric cabinet (1) through insulation brackets (42); the first copper contact (35) and the second copper contact (36) are close to the first copper contact (38) and the second copper contact (39), one side surface of the first pressure contact surface (35.1) and one side surface of the second pressure contact surface (35.1) are respectively, under the action of torque of the tension section (8.1) on the excitation disc (32) in the anticlockwise direction, the first pressure contact surface (35.1) and the second pressure contact surface (35.1) are respectively in limit contact with the first copper contact (38) and the second copper contact (39), so that anticlockwise rotation of the excitation disc (32) is prevented, the excitation disc (32) is ensured to be in a stable state, and the first section of conducting wire (43) and the second section of conducting wire (44) are electrically connected under the conduction action of the arc-shaped copper sheet (37); the tail end surfaces of the first copper contact (35) and the second copper contact (36) are a first sliding surface (35.2) and a second sliding surface (36.2) respectively, and the first sliding surface (35.2) and the second sliding surface (36.2) are in sliding fit with the arc-shaped copper sheet (37); the device is characterized in that a rack (24) extending in the left-right direction is further arranged above the excitation disc (32), the rack (24) is meshed with a transmission gear body (30) on the excitation disc (32), the right end of the rack (24) is fixedly connected with a slide bar (26) in the length direction, the top wall of the electrical cabinet (1) is fixedly provided with a slide bar guide hole seat (28), the slide bar guide hole seat (28) is provided with a transversely-through slide bar through hole (60), the tail end of the slide bar (26) slides through the slide bar through hole (60), the slide bar (26) is sleeved with a return spring (27), the return spring (27) is in a tensile state, and two ends of the return spring (27) are fixedly connected with the rack (24) and the slide bar guide hole seat (28) respectively, so that the return spring (27) forms a rightward tensile force on the rack (24), the rack (24) forms a clockwise torque on the excitation disc (32), and the return spring (27) does not generate a counterclockwise torque on the disc (32) enough to overcome the clockwise torque; so that a pressing force is formed between the first pressure contact surface (35.1) and the second pressure contact surface (35.1) and the contacted first copper contact piece (38) and second copper contact piece (39); when the tension of the tension section (8.1) is released, the rack (24) forms a clockwise torque on the excitation disk (32) to drive the excitation disk (32) to rotate clockwise by 90-180 degrees.
2. An autonomously implemented fire-retardant electrical cabinet system according to claim 1, wherein: hole seats (15) are fixedly arranged at two ends of the gravity ventilation door (10), and vertical guide holes (14) are formed in the hole seats (15); also comprises two guide rods (13) vertically movably penetrating through the two guide holes (14).
3. An autonomously implemented fire-retardant electrical cabinet system according to claim 2, wherein: the fire trigger rope (8) is polyolefin fiber spun by linear polyethylene materials.
4. An autonomously implemented fire-retardant electrical cabinet system according to claim 3, wherein: the bearing seat (25) is fixedly arranged on the lower side of the top wall of the electrical cabinet (1), and the outer wall of the second shaft (31) is rotatably arranged on the bearing seat (25) through a bearing (29).
5. An autonomously implemented fire resistant electrical cabinet system according to claim 4 wherein: the excitation disc (32) and the insulation transmission gear body (30) are made of insulation ceramic or flame-retardant nylon.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210432691.7A CN114796936B (en) | 2022-04-24 | 2022-04-24 | Electrical cabinet system capable of automatically realizing fire prevention and flame retardance |
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| CN202210432691.7A CN114796936B (en) | 2022-04-24 | 2022-04-24 | Electrical cabinet system capable of automatically realizing fire prevention and flame retardance |
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| CN114796936B true CN114796936B (en) | 2023-05-05 |
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| CN116370868A (en) * | 2023-04-26 | 2023-07-04 | 威海市宏源信息技术有限公司 | Wireless security system based on Internet of things |
| CN116581658B (en) * | 2023-06-05 | 2023-10-24 | 杭州恒梦电气有限公司 | Power distribution cabinet with overcurrent and outage protection function and outage protection method thereof |
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| US8230939B1 (en) * | 2006-12-27 | 2012-07-31 | Brian Scott Reynolds | Cookstove fire extinguishing system |
| CN211957329U (en) * | 2020-03-12 | 2020-11-17 | 浙江富杰电气有限公司 | Outdoor transformer with self-protection function |
| CN213527238U (en) * | 2020-10-30 | 2021-06-25 | 武汉铁路职业技术学院 | Automatic fire prevention control cabinet of urban rail transit |
| CN114367072A (en) * | 2022-02-22 | 2022-04-19 | 遂宁市消防救援支队 | Lithium battery box fire prevention and control device |
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Effective date of registration: 20230404 Address after: Room 01, building 16, 4168 Dongshan Avenue, Linhu Town, Wuzhong District, Suzhou City, Jiangsu Province Applicant after: Suzhou LONGNING Electric Power Technology Co.,Ltd. Address before: 215500 Jiangnan Building (Haiyu South Road), No. 37, Qinhu Road, Changshu, Suzhou, Jiangsu Applicant before: Wu Fujun |
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