CN116742491A - Fire extinguishing device and box-type substation with same - Google Patents
Fire extinguishing device and box-type substation with same Download PDFInfo
- Publication number
- CN116742491A CN116742491A CN202310998315.9A CN202310998315A CN116742491A CN 116742491 A CN116742491 A CN 116742491A CN 202310998315 A CN202310998315 A CN 202310998315A CN 116742491 A CN116742491 A CN 116742491A
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- Prior art keywords
- pipeline
- box
- passages
- communicated
- valve
- Prior art date
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- Granted
Links
- 230000017525 heat dissipation Effects 0.000 claims abstract description 38
- 238000002347 injection Methods 0.000 claims abstract description 38
- 239000007924 injection Substances 0.000 claims abstract description 38
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 15
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 15
- 230000008859 change Effects 0.000 claims abstract description 4
- 241001233242 Lontra Species 0.000 claims description 19
- 238000009434 installation Methods 0.000 claims description 8
- 230000005855 radiation Effects 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000002955 isolation Methods 0.000 abstract description 13
- 239000007789 gas Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000037361 pathway Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 210000003437 trachea Anatomy 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
-
- 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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
- A62C37/40—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with electric connection between sensor and actuator
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
- A62C37/42—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with mechanical connection between sensor and actuator, e.g. rods, levers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/46—Boxes; Parts thereof or accessories therefor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/46—Boxes; Parts thereof or accessories therefor
- H02B1/48—Mounting of devices therein
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B7/00—Enclosed substations, e.g. compact substations
- H02B7/06—Distribution substations, e.g. for urban network
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention relates to a fire extinguishing device and a box-type substation with the same, and belongs to the technical field of box-type substations. Including the box, set up in the switch board in the box, set up in the door body of box one side, be equipped with the latch fitting between box and the door body, the box top is equipped with the isolation chamber, be located the top in isolation chamber on the box and be equipped with the negative pressure fan that communicates in the box outside, the air inlet end of negative pressure fan is connected with the wind channel house steward, the wind channel house steward passes the isolation chamber and extends to the box inside, the isolation intracavity is equipped with the carbon dioxide storage tank, be connected with fire extinguishing house steward on the carbon dioxide storage tank, the switch board top all is connected with extinguishing device, extinguishing device is including connecting in the heat dissipation pipeline of wind channel house steward, be connected in fire extinguishing house steward's air injection pipeline, be equipped with the control valve on the air injection pipeline, be equipped with the thermal control mechanism who is used for opening the control valve through the heat change on the heat dissipation pipeline. The invention solves the problems of slower fire extinguishing and lower reliability of electric control equipment in the prior art.
Description
Technical Field
The invention relates to a fire extinguishing device and a box-type substation, and belongs to the technical field of box-type substations.
Background
The box-type substation is called a preassembled substation or a preassembled substation. The transformer station is high-voltage switch equipment, a distribution transformer and a low-voltage distribution device, is prefabricated indoor and outdoor compact distribution equipment of a factory, which are integrated according to a certain wiring scheme, is particularly suitable for urban network construction and transformation, and is a brand-new transformer station rising after a civil engineering transformer station. The box-type transformer substation is suitable for mines, factory enterprises, oil and gas fields and wind power stations, replaces original civil engineering power distribution houses and power distribution stations, and becomes a novel complete set of power transformation and distribution devices.
There are many electrical appliances in the box-type substation, and in comparatively dry place or when the temperature is higher, the condition of a fire appears easily, causes danger. Through retrieving, the Chinese patent with the application number of CN202123349079.3 discloses an automatic fire extinguishing device for a box-type transformer substation, and the technical key points of the automatic fire extinguishing device are as follows: the fire extinguisher comprises a box body, wherein a box is fixedly connected to the right side of the box body, a supporting column is fixedly connected to the left side of an inner cavity of the box body, an arc plate is fixedly connected to the right side of the supporting column, a dry powder extinguisher is arranged in the inner cavity of the arc plate, and a guide pipe is communicated to the left side of the top of the dry powder extinguisher. This patent scheme is through setting up the flue gas inductor, can in time respond to the condition of a fire, through setting up the PLC controller, can control electric putter, electric putter drives movable plate downwardly moving, make the movable plate press the opening valve of dry powder fire extinguisher, open it, through pipe, the connector, the connecting pipe, fixed pipe and shower nozzle, fire the fire point of box inner chamber puts out a fire, the security of box-type substation has been improved, through setting up above structure, the advantage of having possessed automatic fire extinguishing, the problem that current box-type substation exists and does not possess automatic fire extinguishing has been solved.
Through setting up flue gas inductor, PLC controller and dry powder extinguisher matched with in the above-mentioned scheme, realize carrying out the automatic fire extinguishing to box-type substation inside, still have following shortcoming:
1. because the inside switch board that sets up for a plurality of independence of box-type substation, and the source of a fire generally takes place inside the switch board, when the flue gas is propagated to smoke transducer's position by the switch board inside, open fire has been produced to the inside of general switch board, can not in time put out a fire, leads to the property to receive the loss.
2. If electronic control equipment such as a sensor is independently arranged for each control cabinet, on one hand, the corresponding controller is required to be arranged, the cost is high, and on the other hand, when a fire occurs in the box-type transformer substation, the power-off protection mechanism is generally started in the box-type transformer substation, so that the electronic control equipment is in failure and the like, and fire cannot be extinguished in time.
There is therefore a need to propose a new solution to this problem.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the fire extinguishing device and the box-type substation with the fire extinguishing device solve the problems that fire extinguishing is slow, reliability of electric control equipment is low and the like in the prior art.
The technical problems to be solved by the invention are realized by adopting the following technical scheme:
in a first aspect, the invention provides a fire extinguishing device, comprising a heat dissipation pipeline for ventilation and heat dissipation and a gas injection pipeline for spraying fire extinguishing medium, wherein a control valve is arranged on the gas injection pipeline, and a thermosensitive control mechanism for opening the control valve through heat change is arranged on the heat dissipation pipeline;
the control valve comprises a valve body arranged in the air injection pipeline, a mounting shell fixedly connected to the outer wall of the air injection pipeline, a control rod connected to the valve body and extending into the mounting shell, and an impeller in transmission connection with the control rod;
the thermosensitive control mechanism comprises a first pipeline, a one-way valve, a second pipeline, a thermosensitive reversing piece and a third pipeline, wherein one end of the first pipeline is communicated with the heat dissipation pipeline, the other end of the first pipeline is communicated with the mounting shell, the one-way valve is arranged on the first pipeline, one end of the second pipeline is communicated with the starting end of the first pipeline, the other end of the second pipeline is communicated with the heat dissipation pipeline, the thermosensitive reversing piece is arranged between the first pipeline and the second pipeline, and one end of the third pipeline is communicated with the mounting shell, and the other end of the third pipeline is communicated with the heat dissipation pipeline;
the one-way valve comprises a plurality of sections of first passages, a plurality of sections of second passages, a plurality of sections of first drainage passages and a plurality of sections of second drainage passages, wherein the first passages and the second passages are alternately arranged and are connected end to form a valve passage, the valve passage extends in a fold line corrugated shape, the first drainage passages and the second drainage passages extend in a door shape, the first drainage passages are communicated with one end of the first passages and the second passages, which are close to the air injection pipeline, one end of the second drainage passages is communicated with one end of the first passages and one end of the second passages, which are close to the air injection pipeline, and one end of the first drainage passages, which is far away from the valve passage, is inclined towards a direction away from the air injection pipeline, and one end of the second drainage passages, which is far away from the valve passage, is inclined towards a direction away from the air injection pipeline;
when the temperature in the second pipeline is lower, the heat-sensitive reversing piece controls the second drainage passage to be communicated with the valve passage, and when the temperature in the second pipeline is higher, the heat-sensitive reversing piece controls the first drainage passage to be communicated with the valve passage.
The invention is further provided with: the heat-sensitive reversing piece comprises a heat-sensitive piece arranged on one side of the second pipeline, which is close to the first pipeline, and a reversing piece connected between the heat-sensitive piece and the first pipeline;
the heat-sensitive piece comprises a thermal expansion block fixedly connected to the middle part of the second pipeline;
the reversing piece comprises a connecting plate fixedly connected with the thermal expansion block, a plurality of first plugboards and a plurality of second plugboards, wherein the first plugboards and the second plugboards are fixedly connected to one side of the connecting plate, close to the first pipeline, the first plugboards and the second plugboards are respectively connected to the first pipeline in a sliding manner along the depth direction of a valve path, when the thermal expansion block is in a contracted state, the connecting plate is in a first position, when the thermal expansion block is in an expanded state, the connecting plate is in a second position, the first plugboards are arranged at the opening ends of the first drainage path in a one-to-one correspondence manner, two first through openings respectively corresponding to the openings at the two ends of the first drainage path are respectively arranged on the first plugboards, the second plugboards are respectively arranged at the opening ends of the second drainage path in a one-to-one correspondence manner, and the second through openings respectively corresponding to the two ends of the second drainage path are respectively arranged on the second plugboards in a staggered manner in the moving direction of the connecting plate;
when the connecting plate is in the first position, the second port is communicated with the opening of the second drainage passage, the first plug board seals the opening of the first drainage passage, and when the connecting plate is in the second position, the first port is communicated with the opening of the first drainage passage, and the second plug board seals the opening of the second drainage passage.
The invention is further provided with: the second pipeline is close to the one end of heat dissipation pipeline is equipped with the shutoff piece, the shutoff piece including set up in installation annular, fixed connection in the second pipeline inner wall thermal expansion ring in the installation annular, fixed connection in thermal expansion ring is close to the first otter board of heat dissipation pipeline one end, fixed connection in the installation annular and be close to the second otter board of heat dissipation pipeline one end, first otter board with be the interval setting between the second otter board, just mesh on the first otter board with mesh on the second otter board is crisscross the arranging in installation annular axial.
The invention is further provided with: the control rod end part is coaxially and fixedly connected with a worm wheel, a worm is rotatably supported in the mounting shell, the worm wheel is meshed with the worm, the impeller is fixedly connected with one end of the worm, and the air outlet end of the first pipeline corresponds to one side of the impeller.
The invention is further provided with: the heat dissipation device is characterized by further comprising a Y-shaped three-way pipe, wherein the bottom of the air injection pipeline and the bottom of the heat dissipation pipeline are respectively communicated with two openings at the top of the Y-shaped three-way pipe.
The invention provides a box-type transformer substation, which comprises a box body, a plurality of control cabinets arranged in the box body and a door body arranged on one side of the box body, wherein fire extinguishing devices are arranged at the tops of the control cabinets, a locking piece is arranged between the box body and the door body, an isolation cavity is arranged at the top of the box body, a negative-pressure fan communicated with the outside of the box body is arranged at the top of the isolation cavity on the box body, an air inlet end of the negative-pressure fan is connected with an air duct main pipe, the air duct main pipe penetrates through the isolation cavity and extends into the box body, heat dissipation pipelines are connected with the air duct main pipe, a carbon dioxide storage tank is arranged in the isolation cavity, a fire extinguishing main pipe is connected onto the carbon dioxide storage tank, air injection pipelines are connected with the fire extinguishing main pipe, and a port at the bottom of a Y-shaped three-way pipe is communicated with the top of the control cabinet.
The invention is further provided with: the lock comprises a lock body fixedly mounted on the door body, a lock tongue connected to the lock body, a limiting block arranged on one side, close to the door body, of the inner wall of the box body, and a limiting groove which is formed in one side, close to the door body, of the limiting block and matched with the lock tongue, wherein an unlocking mechanism used for driving the limiting block to move towards the direction away from the door body is arranged in the box body.
The invention is further provided with: the unlocking mechanism comprises a connecting shell fixedly connected to the inner wall of the box body, a pressurizing air pipe communicated to the top of the connecting shell, and a piston block inserted in the pressurizing air pipe in a sliding mode, wherein the part, located below the control valve, of the air injection pipeline is provided with a communicating pipeline connected to the pressurizing air pipe, the limiting block is connected to the inside of the connecting shell in a sliding mode along the horizontal direction, a reset spring is arranged in the connecting shell and is abutted to one end, away from the door body, of the limiting block, a wedge-shaped groove is formed in the top of the limiting block, the bottom of the piston block is provided with a wedge-shaped groove matched with the wedge-shaped groove, and when the piston block moves towards the direction close to the limiting block, the limiting block moves towards the direction away from the door body.
The beneficial effects of the invention are as follows:
through setting up mechanical control structures such as control valve and thermal control mechanism and respond to the temperature of fire department and open and close the control valve, when starting outage protection mechanism in the box-type substation, can normally start the jet-propelled pipeline, blowout extinguishing medium in time extinguishes fire department, reduces the loss of property that leads to.
Through setting up the check valve to when making the temperature rise in the second pipeline surpass normal temperature, first drainage passageway accelerates gas through the passageway of gate form, thereby makes the air pressure that first pipeline sprayed on the impeller bigger, can effectively rotate the impeller so that the control valve opens, for ordinary solenoid valve, because control its moment of torsion through electromagnetic system to the case, if case or valve rod department appear dust or the condition such as jam, the circumstances that the valve body is malfunctioning appears easily.
The heat dissipation pipelines and the air injection pipelines are respectively connected to the top of each control cabinet, under the normal state, the control valve seals the air injection pipelines, so that when the situation that a fire occurs due to short circuit and the like of an electronic element in the control cabinet, the heat dissipation pipelines connected to the air duct main pipe form negative pressure in the air duct main pipe, a plurality of heat expansion blocks connected to the air duct main pipe flow out of the control cabinet to reduce the overheat situation in the control cabinet, the heat expansion blocks are in a contracted state, the connecting plate is in a first position, the second drainage passage is communicated with the valve passage through the second through hole, when the air flow passes through the one-way valve, the air flow flowing through the second drainage passage has an obstruction effect on the air flow in the valve passage, so that the air flow is difficult to pass through the one-way valve, when the electronic element in the control cabinet is short-circuited and the like, the heat in the control cabinet is increased, and when the heat expansion blocks connected to the second pipeline are heated and expanded, the connecting plate is pushed to a second position, and the second plug board is moved to seal the second passage, the first drainage passage is communicated with the valve passage through the first through the through hole, and the air flow passes through the one-way valve, and the air flow passes through the first diversion valve, the air flow is rapidly passes through the valve, and the oxygen-poor air flow is blown into the valve, and is rapidly enters the valve, and is rapidly, and is opened, and rapidly, and is in the case;
through setting up the shutoff piece in the second pipeline, under normal condition, the thermal expansion ring is in the shrink state, be the interval setting between first otter board and the second otter board, the air current in the second pipeline can normally circulate, when the condition of a fire appears, the air current that flows through the second otter board heats the thermal expansion ring, make the thermal expansion ring promote first otter board be close to and laminate in the second otter board, the air current can't circulate in the second pipeline again, the heat gathers faster, heat the thermal expansion ring heating more rapidly, the temperature-sensitive control mechanism is more sensitive to control valve control, and under the condition that the burning does not have open flame, because colloid article such as electric wire can appear a large amount of smog excessively, when smog gets into in the second pipeline along with the air current, smog gathers can lead to first otter board or second otter board mesh to reduce, even shutoff mesh, make smog and heat gather in the second pipeline equally, heat the thermal expansion piece, fire hidden danger to have out in time to the fire hazard that does not have open flame equally, reduce the property loss;
through setting up the latch fitting on the door to through setting up release mechanism, when high-pressure carbon dioxide gas in the jet-propelled pipeline, carbon dioxide gas gets into in the pressure boost trachea through communicating pipeline, and pressure boost trachea internal pressure increases, promotes the piston piece and removes towards the direction of stopper, and under the direction effect in piston piece bottom wedge and stopper top wedge groove, make the stopper remove towards the direction of keeping away from the door body, make the spring bolt that connects in the lock body break away from the spacing groove, make the door body be in open condition, reduce the door body because of being heated and take place deformation, lead to the condition that the staff can't open the door body.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is an overall cross-sectional view of the present invention.
Fig. 3 is a schematic view of the internal structure of the present invention.
Fig. 4 is a partial enlarged view of a portion a in fig. 3.
Fig. 5 is a cross-sectional view of a portion of the fire extinguishing apparatus of the present invention.
Fig. 6 is a cross-sectional view of a first conduit portion of the present invention.
Fig. 7 is a schematic view of the structure of the connection plate portion in the present invention.
Fig. 8 is a cross-sectional view of a lock portion of the present invention.
In the figure: 1. a case; 2. a control cabinet; 3. a door body; 4. a partition plate; 5. an isolation chamber; 6. a negative pressure fan; 7. an air duct main pipe; 8. a carbon dioxide storage tank; 9. a fire extinguishing main pipe; 11. a heat dissipation pipe; 12. a jet pipe; 13. y-shaped three-way pipe; 14. a control valve; 15. a valve body; 16. a mounting shell; 17. a control lever; 18. an impeller; 19. a worm wheel; 20. a worm; 21. a thermosensitive control mechanism; 22. a first pipe; 23. a one-way valve; 24. a second pipe; 25. a thermosensitive member; 26. a reversing piece; 27. a third conduit; 28. a first passage; 29. a second passage; 30. a first drainage pathway; 31. a second drainage pathway; 32. a thermal expansion block; 33. a connecting plate; 34. a first plugboard; 35. a second plugboard; 36. a first port; 37. a second port; 38. a blocking member; 39. installing a ring groove; 40. a thermal expansion ring; 41. a first screen; 42. a second screen; 43. a locking piece; 44. a lock body; 45. a bolt; 46. a limiting block; 47. a limit groove; 48. an unlocking mechanism; 49. a connection housing; 50. a pressurizing air pipe; 51. a piston block; 52. a communication pipe; 53. a return spring; 54. wedge-shaped grooves.
Description of the embodiments
The invention will be further described with reference to the following detailed drawings, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
The fire extinguishing device comprises a heat dissipation pipeline 11 for ventilation and heat dissipation, an air injection pipeline 12 for spraying fire extinguishing medium, and a Y-shaped three-way pipe 13 connected to the bottoms of the heat dissipation pipeline 11 and the air injection pipeline 12, wherein the bottoms of the air injection pipeline 12 and the heat dissipation pipeline 11 are respectively communicated with two openings at the top of the Y-shaped three-way pipe 13.
The air injection pipeline 12 is provided with a control valve 14. The control valve 14 comprises a valve body 15 arranged in the air injection pipeline 12, a mounting shell 16 fixedly connected to the outer wall of the air injection pipeline 12, a control rod 17 connected to the valve body 15 and extending into the mounting shell 16, and an impeller 18 connected between the control rod 17, wherein a worm wheel 19 is fixedly connected to the end part of the control rod 17 coaxially, a worm 20 is rotatably supported in the mounting shell 16, the worm wheel 19 is meshed with the worm 20, the impeller 18 is fixedly connected to one end of the worm 20, and the air outlet end of the first pipeline 22 corresponds to one side of the impeller 18.
The heat radiation pipe 11 is provided with a heat sensitive control mechanism 21 for opening the control valve 14 by heat change. The thermosensitive control mechanism 21 comprises a first pipeline 22, a one-way valve 23, a second pipeline 24, a thermosensitive reversing piece and a third pipeline 27, wherein one end of the first pipeline 22 is communicated with the heat dissipation pipeline 11, the other end of the first pipeline 22 is communicated with the mounting shell 16, one end of the second pipeline 24 is communicated with the starting end of the first pipeline 22, the other end of the second pipeline 24 is communicated with the heat dissipation pipeline 11, the thermosensitive reversing piece is arranged between the first pipeline 22 and the second pipeline 24, and one end of the third pipeline 27 is communicated with the mounting shell 16, and the other end of the third pipeline 27 is communicated with the heat dissipation pipeline 11.
The check valve 23 comprises a plurality of sections of first passages 28, a plurality of sections of second passages 29, a plurality of sections of first drainage passages 30 and a plurality of sections of second drainage passages 31, wherein the sections of first passages 28 and the sections of second passages 29 are alternately distributed and connected end to form a valve passage, the valve passage extends in a zigzag corrugated shape, the first drainage passages 30 and the second drainage passages 31 extend in a gate shape, the first drainage passages 30 are communicated with one end of the first passages 28 and the second passages 29, which is close to the air injection pipeline 12, the second drainage passages 31 are communicated with one end of the first passages 28 and the second passages 29, which is close to the heat radiation pipeline 11, and one end of the first drainage passages 30, which is far away from the valve passage, is inclined towards the direction away from the air injection pipeline 12, so that fluid flowing through the first drainage passages 30 can be approximately the same as fluid flowing through the valve passage, and one end of the second drainage passages 31, which is far away from the valve passage, is inclined towards the direction away from the heat radiation pipeline 11, so that fluid flowing through the second drainage passages 31 can be approximately opposite to the flowing direction of fluid flowing through the valve passage.
The heat-sensitive direction-changing member is operative to control the second drainage passage 31 to communicate with the valve passage when the temperature inside the second pipe 24 is low (at a normal temperature), and to control the first drainage passage 30 to communicate with the valve passage when the temperature inside the second pipe 24 is high (at a temperature at which a fire occurs).
The second pipe 24 is arranged in a right angle shape, the heat sensitive member 25 comprises a thermal expansion block 32 fixedly connected to the middle bending part of the second pipe 24, and preferably, the part of the second pipe 24 connected with the thermal expansion block 32 is arranged as a heat conducting plate. The reversing piece 26 comprises a connecting plate 33 fixedly connected to the thermal expansion block 32, a plurality of first plugboards 34 and a plurality of second plugboards 35 fixedly connected to one side, close to the first pipeline 22, of the connecting plate 33, wherein the plurality of first plugboards 34 and the plurality of second plugboards 35 are respectively inserted into the first pipeline 22 in a sliding manner along the depth direction of the valve path and extend into the valve path, the plurality of first plugboards 34 are arranged at the opening ends of the first drainage path 30 in a one-to-one correspondence manner, two first through openings 36 respectively corresponding to the openings at the two ends of the first drainage path 30 are respectively arranged on the first plugboards 34, the plurality of second plugboards 35 are arranged at the opening ends of the second drainage path 31 in a one-to-one correspondence manner, the two second through openings 37 respectively corresponding to the openings at the two ends of the second drainage path 31 are respectively arranged on the second plugboards 35 in a staggered manner in the moving direction of the connecting plate 33.
When the thermal expansion block 32 is in the contracted state, the connecting plate 33 is in the first position, when the connecting plate 33 is in the first position, the second port 37 is communicated with the opening of the second drainage passage 31, the first plug board 34 seals the opening of the first drainage passage 30, and when the air flow passes through the check valve 23, the air flow passing through the second drainage passage 31 has a blocking effect on the air flow in the valve passage, so that the air flow is difficult to pass through the check valve 23. When the thermal expansion block 32 is in the expanded state, the connecting plate 33 is in the second position, when the connecting plate 33 is in the second position, the first opening 36 is communicated with the opening of the first drainage channel 30, the second plug board 35 seals the opening of the second drainage channel 31, and when the air flow passes through the one-way valve 23, the air flow passing through the first drainage channel 30 has an accelerating effect on the air in the valve channel, so that the air flow is accelerated to pass through the first pipeline 22.
The end of the second pipeline 24, which is close to the heat dissipation pipeline 11, is provided with a plugging piece 38, the plugging piece 38 comprises a mounting ring groove 39, a thermal expansion ring 40, a first screen plate 41 and a second screen plate 42, the mounting ring groove 39 is arranged on the inner wall of the second pipeline 24, the thermal expansion ring 40 is fixedly connected in the mounting ring groove 39, the first screen plate 41 is fixedly connected to the end, close to the heat dissipation pipeline 11, of the thermal expansion ring 40, the second screen plate 42 is fixedly connected in the mounting ring groove 39 and is close to the end, the first screen plate 41 and the second screen plate 42 are arranged at intervals, and the meshes on the first screen plate 41 and the meshes on the second screen plate 42 are staggered in the axial direction of the mounting ring groove 39.
Under normal conditions, the heat expansion ring 40 is in a contracted state, the first screen 41 and the second screen 42 are arranged at intervals, the air flow passing through the second pipeline 24 can circulate normally, when a fire occurs, the air flow passing through the second screen 42 heats the heat expansion ring 40, the heat expansion ring 40 pushes the first screen 41 to be close to and attached to the second screen 42, the air flow cannot circulate in the second pipeline 24, heat accumulation is faster, the heat expansion ring 40 is heated more rapidly, the heat-sensitive control mechanism 21 controls the control valve 14 more sensitively, and under the condition that no open fire exists in combustion, a large amount of smoke can appear due to overheat of colloid objects such as wires, when the smoke enters the second pipeline 24 along with the air flow, the mesh of the first screen 41 or the second screen 42 is reduced, even the mesh is blocked, the smoke and the heat are accumulated in the second pipeline 24, the heat expansion block 32 is heated, the fire hidden danger without the open fire can be extinguished in time, and property safety loss is reduced.
The invention relates to a fire extinguishing device, which is implemented by the following principle:
by arranging mechanical control structures such as the control valve 14, the thermosensitive control mechanism 21 and the like to sense the temperature of the fire source and open and close the control valve 14, when a power-off protection mechanism is started in the box-type transformer substation, the air injection pipeline 12 can be normally started, and the fire extinguishing medium is sprayed to extinguish the fire source in time, so that the property loss caused by the fire extinguishing medium is reduced.
And by arranging the check valve 23, when the temperature in the second pipeline 24 rises above the normal temperature, the first drainage channel 30 accelerates the gas through the gate-shaped channel, so that the air pressure of the first pipeline 22 sprayed on the impeller 18 is larger, the impeller 18 can be effectively rotated to open the control valve 14, and compared with a common electromagnetic valve, the torque of the valve is not easy to control because the valve core is controlled in an electromagnetic way, and if dust or blockage and other conditions occur at the valve core or the valve rod, the valve body 15 is easy to fail.
1-3, 8, including box 1, set up in the switch board 2 in box 1, set up in the door body 3 of box 1 one side, switch board 2 top all is equipped with extinguishing device, wherein, box 1 inboard top is equipped with and is the baffle 4 that the level set up, the part of baffle 4 top is box 1 top and forms isolation chamber 5 promptly, be located the top of isolation chamber 5 on box 1 and be equipped with the negative pressure fan 6 that communicates in box 1 outside, the air inlet end of negative pressure fan 6 is connected with wind channel house steward 7, wind channel house steward 7 pass isolation chamber 5 and extend to box 1 inside, heat dissipation pipeline 11 all be connected in wind channel house steward 7, be equipped with carbon dioxide storage tank 8 in the isolation chamber 5, be connected with fire extinguishing house steward 9 on the carbon dioxide storage tank 8, jet-propelled pipeline 12 all be connected in fire extinguishing house steward 9, the through-port of Y type three-way 13 bottom communicate in switch board 2 top.
A locking piece 43 is arranged between the box body 1 and the door body 3, the locking piece 43 comprises a locking body 44 fixedly arranged on the door body 3, a lock tongue 45 connected to the locking body 44, a limiting block 46 arranged on one side, close to the door body 3, of the inner wall of the box body 1, and a limiting groove 47 arranged on one side, close to the door body 3, of the limiting block 46 and matched with the lock tongue 45, and an unlocking mechanism 48 used for driving the limiting block 46 to move towards a direction away from the door body 3 is arranged in the box body 1.
The unlocking mechanism 48 comprises a connecting shell 49 fixedly connected to the inner wall of the box body 1, a pressurizing air pipe 50 communicated to the top of the connecting shell 49, and a piston block 51 slidably inserted into the pressurizing air pipe 50, wherein a communicating pipeline 52 connected to the pressurizing air pipe 50 is arranged at the part of the air injection pipeline 12 below the control valve 14, the limiting block 46 is slidably connected to the inside of the connecting shell 49 along the horizontal direction, a return spring 53 is arranged in the connecting shell 49, the return spring 53 is abutted to one end of the limiting block 46, far away from the door body 3, a wedge-shaped groove 54 is formed in the top of the limiting block 46, the bottom of the piston block 51 is in a wedge shape matched with the wedge-shaped groove 54, and when the piston block 51 moves towards the direction close to the limiting block 46, the limiting block 46 moves towards the direction far away from the door body 3.
When high-pressure carbon dioxide gas in the air injection pipeline 12 enters the pressurizing air pipe 50 through the communication pipeline 52, when the pressure in the pressurizing air pipe 50 is increased, the piston block 51 is pushed to move towards the direction of the limiting block 46, and under the guiding action of the wedge-shaped bottom of the piston block 51 and the wedge-shaped groove 54 at the top of the limiting block 46, the limiting block 46 is enabled to move towards the direction away from the door body 3, so that the lock tongue 45 connected to the lock body 44 is separated from the limiting groove 47, the door body 3 is in an open state, and the situation that the door body 3 cannot be opened by staff due to deformation caused by heating is reduced.
The implementation principle of the box-type transformer substation is as follows:
under normal state, the control valve 14 seals the air injection pipeline 12 to enable the carbon dioxide storage tank 8 positioned at the top of the box body 1 to be in a normally closed state, the negative pressure fan 6 forms negative pressure in the air duct main pipe 7, a plurality of heat dissipation pipelines 11 connected to the air duct main pipe 7 enable hot air in the control cabinet 2 to flow out of the box body 1 so as to reduce overheat condition in the control cabinet 2, the thermal expansion block 32 is in a contracted state at the moment, the connecting plate 33 is in a first position, the second drainage channel 31 is communicated with the valve channel through the second port 37, when air flows through the one-way valve 23, the air flows through the second drainage channel 31 have an obstruction effect on the air flows in the valve channel, so that the air flows are difficult to pass through the one-way valve 23, when fire and the like occur due to short circuit and the like of electronic components in the control cabinet 2, the heat quantity in the control cabinet 2 is increased, and when the heat dissipation pipelines 11 are sent into the first pipeline 22 and the second pipeline 24, the thermal expansion block 32 connected to the second pipeline 24 is heated and expanded, the connecting plate 33 is pushed to move to the second position, at this time, the second plug board 35 moves to close the second drainage channel 31, the first drainage channel 30 is communicated with the valve channel through the first through hole, when the air flow passes through the one-way valve 23, the air flow flowing through the first drainage channel 30 accelerates the air in the valve channel, so that the air flow accelerates through the first pipeline 22 and blows the impeller 18, under the cooperation of the worm gear 19 and the worm 20, the control rod 17 is driven to rotate, the valve body 15 positioned in the air injection pipeline 12 is opened, so that the carbon dioxide in the carbon dioxide storage tank 8 enters the control cabinet 2 through the fire extinguishing manifold 9 and the air injection pipeline 12, the oxygen is lack in the control cabinet 2, the fire source is extinguished rapidly, the condition of fire increase is reduced, and the property safety is ensured.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, but is capable of various changes and modifications without departing from the spirit and scope of the invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A fire extinguishing apparatus, characterized in that: the fire extinguishing device comprises a heat dissipation pipeline (11) for ventilation and heat dissipation and an air injection pipeline (12) for injecting fire extinguishing medium, wherein a control valve (14) is arranged on the air injection pipeline (12), and a thermosensitive control mechanism (21) for opening the control valve (14) through heat change is arranged on the heat dissipation pipeline (11);
the control valve (14) comprises a valve body (15) arranged in the air injection pipeline (12), a mounting shell (16) fixedly connected to the outer wall of the air injection pipeline (12), a control rod (17) connected to the valve body (15) and extending into the mounting shell (16), and an impeller (18) in transmission connection with the control rod (17);
the thermosensitive control mechanism (21) comprises a first pipeline (22) with one end communicated with the heat dissipation pipeline (11) and the other end communicated with the mounting shell (16), a one-way valve (23) arranged on the first pipeline (22), a second pipeline (24) with one end communicated with the starting end of the first pipeline (22) and the other end communicated with the heat dissipation pipeline (11), a thermosensitive reversing piece arranged between the first pipeline (22) and the second pipeline (24), and a third pipeline (27) with one end communicated with the mounting shell (16) and the other end communicated with the heat dissipation pipeline (11);
the one-way valve (23) comprises a plurality of sections of first passages (28), a plurality of sections of second passages (29), a plurality of sections of first drainage passages (30) and a plurality of sections of second drainage passages (31), wherein the first passages (28) and the second passages (29) are alternately arranged and are connected end to form valve passages, the valve passages extend in a fold line corrugated shape, the first drainage passages (30) and the second drainage passages (31) extend in a door shape, the first drainage passages (30) are communicated with one end of the first passages (28) and the second passages (29) close to the air injection pipeline (12) in a one-to-one correspondence manner, the second drainage passages (31) are communicated with one end of the first passages (28) and one end of the second passages (29) close to the heat radiation pipeline (11), one end of the first drainage passages (30) far away from the valve passages is inclined towards a direction far away from the air injection pipeline (12), and one end of the second drainage passages (31) far away from the valve passages is inclined towards a heat radiation direction far from the air injection pipeline (11);
when the internal temperature of the second pipeline (24) is lower, the heat-sensitive reversing piece controls the second drainage passage (31) to be communicated with the valve passage, and when the internal temperature of the second pipeline (24) is higher, the heat-sensitive reversing piece controls the first drainage passage (30) to be communicated with the valve passage.
2. A fire extinguishing apparatus according to claim 1, characterized in that: the heat-sensitive reversing piece comprises a heat-sensitive piece (25) arranged on one side of the second pipeline (24) close to the first pipeline (22), and a reversing piece (26) connected between the heat-sensitive piece (25) and the first pipeline (22);
the thermosensitive piece (25) comprises a thermal expansion block (32) fixedly connected to the middle part of the second pipeline (24);
the reversing piece (26) comprises a connecting plate (33) fixedly connected to the thermal expansion block (32), a plurality of first plugboards (34) and a plurality of second plugboards (35) fixedly connected to the connecting plate (33) close to one side of the first pipeline (22), the plurality of first plugboards (34) and the plurality of second plugboards (35) are respectively inserted into the first pipeline (22) in a sliding manner along the depth direction of the valve path, when the thermal expansion block (32) is in a contracted state, the connecting plate (33) is in a first position, when the thermal expansion block (32) is in an expanded state, the connecting plate (33) is in a second position, the plurality of first plugboards (34) are arranged at the opening ends of the first drainage passage (30) in a one-to-one correspondence manner, the first plugboards (34) are respectively provided with two first through openings (36) corresponding to two ends of the first drainage passage (30), the plurality of second plugboards (35) are correspondingly arranged at the first through openings (31) in a one-to-one correspondence manner, and the second plugboards (37) are respectively provided with two through openings (37) corresponding to the second through passages (31) in a staggered manner;
when the connecting plate (33) is in the first position, the second port (37) is communicated with the opening of the second drainage channel (31), the first plug board (34) seals the opening of the first drainage channel (30), when the connecting plate (33) is in the second position, the first port (36) is communicated with the opening of the first drainage channel (30), and the second plug board (35) seals the opening of the second drainage channel (31).
3. A fire extinguishing apparatus according to claim 2, characterized in that: the one end that second pipeline (24) is close to radiating pipe (11) is equipped with shutoff piece (38), shutoff piece (38) including set up in installation annular (39) of second pipeline (24) inner wall, fixed connection in thermal expansion ring (40) in installation annular (39), fixed connection in thermal expansion ring (40) are close to first otter board (41) of radiating pipe (11) one end, fixed connection in installation annular (39) and be close to second otter board (42) of radiating pipe (11) one end, first otter board (41) with be the interval setting between second otter board (42), just mesh on first otter board (41) with mesh on second otter board (42) are crisscross in installation annular (39) axial.
4. A fire extinguishing apparatus according to claim 1, characterized in that: the control rod (17) is characterized in that a worm wheel (19) is coaxially and fixedly connected to the end part of the control rod (17), a worm (20) is rotatably supported by the mounting shell (16), the worm wheel (19) is meshed with the worm (20), the impeller (18) is fixedly connected to one end of the worm (20), and the air outlet end of the first pipeline (22) corresponds to one side of the impeller (18).
5. A fire extinguishing apparatus according to claim 1, characterized in that: the heat dissipation device further comprises a Y-shaped three-way pipe (13), wherein the bottoms of the air injection pipeline (12) and the heat dissipation pipeline (11) are respectively communicated with two openings at the top of the Y-shaped three-way pipe (13).
6. The utility model provides a box-type substation, includes box (1), set up in a plurality of switch boards (2) in box (1), set up in door body (3) of box (1) one side, its characterized in that: the fire extinguishing device is characterized in that fire extinguishing devices according to any one of claims 1-5 are arranged at the top of the control cabinet (2), a lock (43) is arranged between the box body (1) and the door body (3), an isolating cavity (5) is arranged at the top of the box body (1), a negative pressure fan (6) communicated with the outside of the box body (1) is arranged at the top of the isolating cavity (5), an air inlet end of the negative pressure fan (6) is connected with an air duct main pipe (7), the air duct main pipe (7) penetrates through the isolating cavity (5) and extends into the box body (1), heat dissipation pipelines (11) are all connected to the air duct main pipe (7), a carbon dioxide storage tank (8) is arranged in the isolating cavity (5), a fire extinguishing main pipe (9) is connected to the carbon dioxide storage tank (8), and an air inlet at the bottom of the Y-shaped three-way pipe (13) is communicated with the top of the control cabinet (2).
7. A box-type substation according to claim 6, characterized in that: the lock piece (43) comprises a lock body (44) fixedly installed on the door body (3), a lock tongue (45) connected to the lock body (44), a limiting block (46) arranged on one side, close to the door body (3), of the inner wall of the box body (1), a limiting groove (47) formed in one side, close to the door body (3), of the limiting block (46) and matched with the lock tongue (45), and an unlocking mechanism (48) used for driving the limiting block (46) to move towards the direction away from the door body (3) is arranged in the box body (1).
8. A box-type substation according to claim 7, characterized in that: the unlocking mechanism (48) comprises a connecting shell (49) fixedly connected to the inner wall of the box body (1), a pressurizing air pipe (50) communicated to the top of the connecting shell (49) and a piston block (51) in the pressurizing air pipe (50) in a sliding mode, the portion, located below the control valve (14), of the air injection pipeline (12) is provided with a communicating pipeline (52) connected to the pressurizing air pipe (50), the limiting block (46) is connected to the inside of the connecting shell (49) in a sliding mode along the horizontal direction, a reset spring (53) is arranged in the connecting shell (49), the reset spring (53) abuts against one end, away from the door body (3), of the limiting block (46), a wedge-shaped groove (54) is formed in the top of the limiting block (46), the bottom of the piston block (51) is arranged to be in a wedge shape matched with the wedge-shaped groove (54), and when the piston block (51) moves towards the direction close to the limiting block (46), the limiting block (46) moves towards the direction away from the door body (3).
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| CN117878736A (en) * | 2024-03-13 | 2024-04-12 | 国网山西省电力公司运城供电公司 | Box-type substation oriented to distribution network automation and data driving |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117526109A (en) * | 2023-11-13 | 2024-02-06 | 山东厚俞实业有限公司 | Electric power prefabricated cabin with fault unit isolation function |
| CN117526109B (en) * | 2023-11-13 | 2024-04-16 | 山东厚俞实业有限公司 | Electric power prefabricated cabin with fault unit isolation function |
| CN117878736A (en) * | 2024-03-13 | 2024-04-12 | 国网山西省电力公司运城供电公司 | Box-type substation oriented to distribution network automation and data driving |
| CN117878736B (en) * | 2024-03-13 | 2024-06-07 | 国网山西省电力公司运城供电公司 | Box-type substation oriented to distribution network automation and data driving |
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| Publication number | Publication date |
|---|---|
| CN116742491B (en) | 2023-11-21 |
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