CN111686386A - Arrangement structure of compressed air foam fire extinguishing system of extra-high voltage converter transformer - Google Patents
Arrangement structure of compressed air foam fire extinguishing system of extra-high voltage converter transformer Download PDFInfo
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- CN111686386A CN111686386A CN202010568324.0A CN202010568324A CN111686386A CN 111686386 A CN111686386 A CN 111686386A CN 202010568324 A CN202010568324 A CN 202010568324A CN 111686386 A CN111686386 A CN 111686386A
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- 239000006260 foam Substances 0.000 title claims abstract description 119
- 239000007921 spray Substances 0.000 claims abstract description 111
- 238000005507 spraying Methods 0.000 claims abstract description 63
- 239000007788 liquid Substances 0.000 claims description 24
- 238000003860 storage Methods 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 49
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 9
- 230000001629 suppression Effects 0.000 description 7
- 239000003595 mist Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 206010003497 Asphyxia Diseases 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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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
- A62C31/005—Delivery of fire-extinguishing material using nozzles
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/28—Accessories for delivery devices, e.g. supports
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
- A62C5/02—Making of fire-extinguishing materials immediately before use of foam
Abstract
The invention relates to a compressed air foam fire extinguishing system of an extra-high voltage converter transformer, which comprises N groups of converter transformers in a converter transformer wide field, wherein each group of converter transformers is provided with a plurality of converter transformer units, and the compressed air foam fire extinguishing system also comprises a fixed spraying system, a fire monitor fire extinguishing system and a fire hydrant system which all adopt compressed air foam solution, wherein the fixed foam system comprises a spraying release pipe arranged in each converter transformer unit and arranged at the outer side of the converter transformer. The fire gun system contains plural fire gun, it is located the change of current and becomes valve room side cornice or change of current and become on the fire gun tower in square, the fire hydrant system contains the fire hydrant of setting in change of current and become the square, spray the release pipe, the fire gun, the fire hydrant is all connected in compressed air foam production device, adopt compressed air foam fire extinguishing systems to combine fixed spraying, fire gun and fire hydrant system, it is high to utilize the compressed air foam to have foam stability, the coverage is good, impact momentum is strong, advantage such as the water consumption is little, promote fire extinguishing efficiency.
Description
Technical Field
The invention relates to an arrangement structure of a fire extinguishing system applied to an extra-high voltage converter transformer, in particular to a fixed fire fighting mode realized by adopting compressed air foam.
Background
A converter transformer (hereinafter referred to as converter transformer) of an extra-high voltage converter station is large oil-immersed equipment in the station, oil content of single-phase equipment is about 100 t-151 t, fire hazard is high, and a fixed fire extinguishing facility is required to be arranged to extinguish possible equipment fire from a fire fighting perspective. At present, the domestic large-scale oil immersion equipment fixing fire protection mainly adopts two modes of a water spray fire extinguishing system and a foam spray fire extinguishing system. The water spray fire extinguishing system has large water consumption, and in areas with rich water resources, the large-scale oil immersion equipment is generally used for fixed fire fighting and is generally used as a water spray fire extinguishing system, and in areas with lack of water resources, the large-scale oil immersion equipment is generally used as a foam spray fire extinguishing system.
In the traditional water spray fire extinguishing system, water mist is sprayed out through the water mist spray nozzles 21 arranged around the converter transformer, and no other fire extinguishing agents are contained except water. Ideally, each of the nozzles shown in fig. 1A to 1C has a water mist spraying range 22, and the converter oil tank 11, the radiator 12, the oil storage tank, the casing 14 and the oil pool 17 form an all-directional three-dimensional package to isolate air, so as to achieve the purpose of fire extinguishing by the suffocation principle. But the disadvantages are that: 1) the fire extinguishing efficiency is low, and the water is not easy to combine with or be absorbed by other substance molecules due to large surface tension of the water, so that the heat absorption and temperature reduction effects are generated; 2) when the water spray fire extinguishing system works, the water spray fire extinguishing system is greatly influenced by the field environment such as wind speed and wind direction, and the fire extinguishing efficiency of the water spray fire extinguishing system is insufficient in the fire suppression and control capacity; 3) the water spray fire extinguishing system has large fire fighting water consumption, and the traditional fire extinguishing mode has the advantages that the part capable of generating heat absorption action in water sprayed during fire extinguishing is only 5% -10%, namely 90% -95% of fire extinguishing water is wasted and lost, and the water spray fire extinguishing system is difficult to apply to water resource shortage areas; 4) because the distance between the water mist spray head and the transformer cannot exceed the effective range of the spray head, the spray head is arranged to be close to the transformer, the spray head is easy to damage and drop when the transformer catches fire, the pipeline loses pressure, water mist cannot be formed, air cannot be isolated around the transformer, and effective fire extinguishment cannot be realized.
According to a traditional foam spraying fire extinguishing system, foam mixed liquid is formed in a mixing or premixing mode, and is conveyed to foam spray heads around a converter transformer through a pump set or nitrogen, and air foam is formed at outlets of the spray heads. As shown in fig. 2A and 2B, the foam nozzle is generally disposed above the top surface of the converter transformer, a nozzle 32 at the root of the casing is disposed at the bottom of the casing, and a nozzle 33 of the oil conservator is disposed at the top of the oil conservator 13, and the nozzles are connected to a foam main pipe 31 connected to a foam fire-fighting room through a foam pipe 34. When foam liquid enters the spray head, the caliber is suddenly reduced, the flow rate is sharply increased, and a certain vacuum degree is generated in the mixing chamber, so that air is sucked and mixed with the foam liquid to generate air foam. The foam flows to form the covers of the top surface of the converter transformer, the body of the converter transformer, the oil storage cabinet 13, the oil pool 17 and the like, and the aim of extinguishing fire is fulfilled by isolating air. But the disadvantages are: 1) the foam stability is not strong, which is mainly due to the uneven foam size and the wide size distribution range of the bubbles in the foam, so that air easily passes through a bubble film to diffuse among the bubbles, small bubbles become smaller and large bubbles become larger, while the stability of the larger bubbles is weaker, the larger bubbles are difficult to attach to the surface of fuel for a long time, and the fire extinguishing efficiency is also influenced; 2) the vacuum air-breathing foam fire-extinguishing system has the advantages that the foam impulse generated is small, the momentum is not high, and the foam is easily influenced by high-temperature air flow near a jet orifice, mainly because air is entrained when the foam is jetted through a jet head, and the jet head acts by the action of turbulence between the air and foam solution, so that partial energy of the foam is dissipated. The fire extinguishing reliability is influenced and the fire extinguishing efficiency is reduced due to the limited adhesion capability on the surface of the protector; 3) when the converter is in fire, a large amount of dense smoke is often accompanied, so that the formation of foam is influenced, and the fire extinguishing effect is reduced.
The two converter transformer fire extinguishing systems mainly play a role in isolating suffocation, are short in response time, and mainly aim at extinguishing the initial fire of the converter transformer, but the water spray and the foam spray are limited in intensity, so that the larger fire is difficult to extinguish.
In recent years, a plurality of transformer fire accidents occur, so that equipment and personnel loss is caused, the caused power failure accident has certain influence on national economy, the fire extinguishing capability of a fixed fire extinguishing system is limited, and the fixed fire extinguishing system is difficult to extinguish fire quickly and effectively, and in view of the important position of the ultra-high voltage converter station in a power grid framework, the converter transformer of the ultra-high voltage converter station needs to be improved for fire protection, and a more reliable and efficient fire protection mode is explored.
Disclosure of Invention
The technical problem solved by the invention is to provide a fixed fire extinguishing system arrangement structure using compressed air foam as a medium.
The technical means adopted by the invention are as follows.
A compressed air foam fire extinguishing system arrangement structure of an extra-high voltage converter transformer comprises N groups of converter transformers in a converter transformer wide field, a plurality of converter transformer units are arranged in each group of converter transformers, and the compressed air foam fire extinguishing system arrangement structure further comprises a fixed spraying system, a fire monitor fire extinguishing system and a fire hydrant system which all adopt compressed air foam solution; the fixed foam system comprises a spray release pipe arranged in each converter transformer unit, the spray release pipes are connected with the compressed air foam generating device through spray conveying pipes, and the spray conveying pipes are arranged on the outer sides of the converter transformers; the fire monitor system comprises a plurality of fire monitors, the fire monitors are arranged on a cornice on the valve hall side of the converter transformer, the fire monitors are connected with the compressed air foam generating device through fire monitor conveying pipes, and the fire monitor conveying pipes are arranged on the valve hall side of the converter transformer; or the fire monitor is arranged on a fire monitor tower of the converter transformer square, the fire monitor is connected with the compressed air foam generating device through a fire monitor conveying pipe, and the fire monitor conveying pipe is arranged on the converter transformer square side; the fire hydrant system comprises a fire hydrant arranged on the converter transformer square, and the fire hydrant is connected with the compressed air foam generating device through a pipeline.
Furthermore, the compressed air foam generating device is positioned in a fire-fighting equipment room, and 1 fire-fighting equipment room corresponds to 1 group or more than 1 group of converter transformers; the spray delivery pipe outside each group of converter transformers is connected with a compressed air foam generating device in the fire-fighting equipment room through a spray main pipe after passing through the valve room, and the fire-fighting gun delivery pipe on the side of each group of converter transformers is connected with the compressed air foam generating device in the fire-fighting equipment room through a fire-fighting gun main pipe after passing through the valve room.
Furthermore, a firewall is arranged between adjacent converter transformer units, the spray release pipe is arranged between the converter transformer body and the firewall, the spray release pipe transversely extends between the top of the converter transformer body and the BOX-IN top plate and covers the converter transformer body and an oil collecting pit IN the BOX-IN, and the spray release pipe is positioned IN the spraying and flowing range of the extension pipe on the valve hall side and covers the hole of the valve side sleeve lifting seat; the spray release pipe extends upwards to form a first spray branch pipe at the radiator, the top of the first spray branch pipe is communicated with a transverse fourth spray branch pipe, and the spraying and flowing range of the fourth spray branch pipe covers the area where the radiator is located and a BOX-IN external oil collection pit; the spraying release pipe extends upwards to form a second spraying branch pipe at the sleeve pipe at the top of the converter body, the top of the second spraying branch pipe is communicated with a transverse fifth spraying branch pipe, and the spraying and flowing range of the fifth spraying branch pipe covers 2 sleeve pipe lifting seat hole openings; the spray release pipe extends upwards to form a third spray branch pipe at the oil storage cabinet, the top of the third spray branch pipe is communicated with a transverse sixth spray branch pipe, and the spraying and flowing range of the sixth spray branch pipe covers the area of the oil storage cabinet; the spray release pipe is connected with a spray delivery pipe extending downwards, and the bottom end of the spray delivery pipe is communicated with a spray delivery main pipe.
Furthermore, the spraying release pipe, the extension pipe, the fourth spraying branch pipe, the fifth spraying branch pipe and the sixth spraying branch pipe are made of perforated stainless steel pipes or are provided with a plurality of spray heads.
The fire monitor is positioned above the cornice corresponding to the firewall, and the muzzle of the fire monitor can rotate to adjust the spraying direction.
Furthermore, the fire monitor is positioned on the outer side of the cornice, the fire monitor conveying pipes are arranged on the inner side of the cornice along the arrangement direction of the converter transformer units, and the positions corresponding to the fire monitor are communicated with the fire monitor through branch pipes.
Furthermore, 3 layers of brackets are fixed on the outer wall of the valve hall on the cornice, and 2 fire monitor conveying pipes are jointly arranged on 1 bracket.
Furthermore, a liquid supply pipeline of the fire hydrant system is connected to a fire monitor main pipe or a spraying main pipe.
The beneficial effects produced by the invention are as follows.
1. The invention adopts the compressed air foam fire extinguishing system as the converter transformer fixed fire fighting mode of the extra-high voltage converter station, and utilizes the advantages of high foam stability, good coverage, strong impact momentum, small water consumption and the like of the compressed air foam, thereby having high fire extinguishing efficiency.
2. The invention applies the system arrangement of compressed air foam, adopts a combined fire extinguishing system of a fixed spraying system and a fixed fire monitor system, has short response time of the fixed spraying system taking the compressed air foam as a fire extinguishing medium, replaces the traditional water spray fire extinguishing system and foam spray fire extinguishing system, and forms omnibearing package and air isolation for the converter transformer so as to fulfill the aim of fire extinguishing. The auxiliary system adopts a large-flow fire monitor system which has slightly long response time and takes compressed air foam as a fire extinguishing medium, ensures the strength to intensively spray main ignition points for fire extinguishing, and combines the points and the surfaces. Meanwhile, a fire hydrant system which takes compressed air foam as a fire extinguishing medium is arranged on the converter transformer square, a fire hose and a foam gun can be connected, the spraying target is flexible, the coverage range is wide, and the fire extinguishing capability and reliability are improved. Therefore, the fire extinguishing system of the present invention has a very effective fire extinguishing effect in response to both the initial fire and the larger fire.
3. The invention mainly uses the mixed solution of water, foam liquid and compressed air, and can effectively save the water for fire fighting.
4. The valve room and the fire fighting equipment room are arranged near the converter transformer, so that the pipeline distance between the foam generating device, the valve and the protected converter transformer can be effectively shortened, and the short response time can be obtained.
Drawings
FIG. 1A is a schematic diagram of a side view of a conventional converter transformer unit employing a water spray fire suppression system.
FIG. 1B is a schematic top view of a conventional converter transformer unit employing a water spray fire suppression system.
FIG. 1C is a schematic view of a conventional converter transformer unit radiator orientation arrangement using a water spray fire suppression system.
Fig. 2A is a schematic side view of a converter transformer unit of a conventional fire extinguishing system using foam spray.
Fig. 2B is a schematic top view of a converter transformer unit of a conventional fire extinguishing system using foam spraying.
FIG. 3 is a structural flow chart of a compressed air foam fire extinguishing system of the ultra-high voltage converter transformer.
Fig. 4 is a schematic diagram of the arrangement structure of the compressed air foam fire extinguishing system of the extra-high voltage converter transformer (taking the back-to-back arrangement of the converter transformer as an example).
Fig. 5 is a schematic structural cross-sectional view of a converter transformer unit according to the present invention.
FIG. 6 is a schematic view showing the outer structure of group 1 of the converter tubes of the present invention.
Description of the figure numbers:
the device comprises a supply device 100, a water supply system 101, a liquid supply system 102, a gas supply system 103, a generation device 200, a proportional mixing device 201, a gas-liquid proportional mixing device 202 and a release device 300;
the system comprises a valve room 10, an oil tank 11, a radiator 12, an oil storage cabinet 13, a top sleeve 14a, a valve side sleeve 14b, a firewall 15, a cornice 16, an oil pool 17 and a fire-fighting equipment room 6;
the spraying system comprises a fixed spraying system 40, a spraying release pipe 41, a first spraying branch pipe 421, a second spraying branch pipe 422, a third spraying branch pipe 423, a fourth spraying branch pipe 424, a fifth spraying branch pipe 425, a sixth spraying branch pipe 426, a spraying main conveying pipe 43, a spraying conveying pipe 44 and a spraying main pipe 45;
a fire monitor system 50, a fire monitor 51, a fire monitor delivery pipe 52, a branch pipe 53, a bracket 54 and a fire monitor main pipe 55;
a fire hydrant system 60, a fire hydrant 61.
Detailed Description
The present invention provides a fire extinguishing system flow and its system layout mode for extinguishing fire by compressed air foam.
The fire extinguishing system adopts a compressed air foam fire extinguishing mode completely different from the traditional fire extinguishing mode, namely, the traditional compressed air foam fire extinguishing system (CAFS) which is only movably configured is comprehensively and fixedly applied to the ultrahigh voltage converter transformer.
In conjunction with the embodiments shown in fig. 4 to 6, a description will be given taking as an example a piping arrangement including 4 sets of converter transformers in a converter transformer wide range.
As shown in the system flow chart of FIG. 3, the compressed air foam fire extinguishing system of the ultra-high voltage converter transformer comprises a supply device 100, a generating device 200 and a releasing device 300.
The supply device 100 comprises a water supply system 101, a liquid supply system 102 and a gas supply system 103.
The generating device 200 comprises a foam proportion mixing device 201 and a gas-liquid proportion mixing device 202. A water source inlet and a foam source inlet of the foam proportion mixing device 201 are respectively connected with the water supply system 101 and the liquid supply system 102, a liquid outlet of the foam proportion mixing device 201 is connected with a liquid inlet of the gas-liquid proportion mixing device 202, a compressed air inlet of the gas-liquid proportion mixing device 202 is connected with the gas supply system 103, a mixed foam solution outlet of the gas-liquid proportion mixing device 202 is connected with the release device 300, the release device 300 is one or any combination of the fixed spray system 40, the fire monitor system 50 and the fire hydrant system 60 which are positioned in a converter transformer wide field, such as two-two combination and three combination, and the three systems shown in fig. 4 are combined into the most complete mode.
The generating device 200, the air supply system 103, and the liquid supply system 102 are installed in the fire-fighting equipment room 6, and the fire-fighting equipment room 6 is usually located near the converter as shown in fig. 4. The connecting pipeline between the gas-liquid proportional mixing device 202 and the releasing device 300 passes through the valve room 10, and a control valve and a maintenance valve are arranged on the pipeline positioned in the valve room 10. The gas supply system 103 and the liquid supply system 102 may be disposed in the fire-fighting equipment room 6, or may be disposed at other suitable positions and transported to the fire-fighting equipment room 6 by pipelines.
The fire fighting equipment room 6 and the valve room 10 can be cooperatively arranged in the manner shown in fig. 4, or the fire fighting equipment room 6 and the valve room 10 can be combined, specifically, the combined arrangement can be the manner that the fire fighting equipment room 6 and the valve room 10 are adjacently arranged, or can be the manner that the internal equipment shares the same space, subject to the actual requirement.
The water supply system 101 may be located in a pump room or a water tank in the converter station, the water supply system 101 is selected from the water tank or the water tank, and a water source enters the foam proportion mixing device 201 through a water pump. The liquid supply system 102 may be a foam liquid tank or a foam liquid tank. The air supply system 103 may be an air compressor.
In addition, the system also comprises a control system, wherein the control system is connected with and controls the foam proportion mixing device 201, the gas-liquid proportion mixing device 202, the control valve, the release device 300, the water pump, the air compressor and the like, and the control system is automatically started and controlled according to the actual demand condition.
Combining the above structure, fully mixing water and foam concentrate into foam solution through foam proportion mixing arrangement 201, introducing certain proportion of compressed air into foam solution with air compressor, mixing in proportion to form compressed air foam solution, and then putting out a fire through pipeline output. The foam produced by the method is fine and uniform, and has the advantages of small water consumption, good heat radiation blocking capability, good wettability, long fire extinguishing distance and the like. Wherein the gas-liquid ratio mixing device 202 is the core of the entire compressed air foam, the main function is to provide the optimum mixing ratio of the foam to ensure the production of the compressed air foam solution required by the foam fire suppression system.
With reference to the back-to-back arrangement embodiments shown in fig. 4 to 6, 4 sets of converter transformers are included in the converter transformer wide field, each set of converter transformers is arranged with 6 converter transformer units, 1 converter transformer body and its surrounding space are one converter transformer unit, and adjacent converter transformer units are spaced apart by fire walls 15. The first converter transformer unit, the second converter transformer unit … … and the sixth converter transformer unit are defined from left to right in fig. 5, the converter transformer radiator 12 side in fig. 6 is the converter transformer outer side, and the converter transformer conservator 13 side is the converter transformer valve hall side. The left side of the first converter transformer unit shown in fig. 6 is provided with a valve room 10, and a firewall 15 is also arranged between the first converter transformer unit and the valve room 10.
The compressed air foam fire extinguishing system applied to the extra-high voltage converter transformer comprises a fixed spraying system 40 adopting a compressed air foam fire extinguishing mode, a fire monitor system 50 and a fire hydrant system 60. As shown in the system layout of fig. 4, the fixed spraying system 40 is arranged outside the converter transformer, the fire monitor system 50 is arranged at the valve hall side, and the fire hydrant system 60 can be arranged at a suitable position nearby, such as the end of the converter transformer square, according to actual conditions.
The fixed sprinkler system 40 is the fixed fire suppression portion of the overall fire suppression system and includes a sprinkler release pipe 41 that releases compressed air foam in each converter transformer unit. Specifically, as shown IN fig. 6, a shower release pipe 41 is arranged along the fire wall 15 around the converter body IN each converter unit, and is mainly arranged to extend laterally at the root position of the top sleeve 14a on the converter body, covering the converter body, the oil sump IN the BOX-IN, and the shower release pipe 41 is arranged at the spray and flow range of the extension pipe 41a on the valve hall side, covering the raised seat hole of the valve side sleeve 14 b. Spray release pipes 41 are disposed on both sides of the converter body.
As shown IN fig. 5, the spray release pipe 41 extends upwards from the heat spreader 12 to form a first spray branch pipe 421, the top of the first spray branch pipe is communicated with a transverse fourth spray branch pipe 424, and the spraying and flowing range of the fourth spray branch pipe 424 covers the area where the heat spreader 12 is located and the BOX-IN external oil collection pit.
The spray release pipe 41 extends upwards to form a second spray branch pipe 422 at the position of the sleeve 14a at the top of the converter body, and the top of the spray release pipe is communicated with a transverse fifth spray branch pipe 425, so that the spraying and flowing range of the fifth spray branch pipe 425 can completely cover the area where the root of 2 sleeves 14a are located, namely the lifting seat hole of 2 sleeves 14a is covered.
Of course, the above-described shower piping system is designed for the converter transformer shown in the drawings, and is not limited thereto. In fact, the structures of the converter transformers of different equipment manufacturers are different, and only one of the schematic diagrams is provided. The spray pipes corresponding to different converter transformers are basically consistent in arrangement principle and can be adjusted according to specific converter transformer structures.
The spray release pipe 41 extends upwards to form a third spray branch pipe 423 at the oil conservator 13, the top of the spray release pipe is communicated with a transverse sixth spray branch pipe 426, and the spraying and flowing range of the sixth spray branch pipe 426 covers the area where the oil conservator 13 is located.
As shown in fig. 5 and 6, the middle of the spray release pipe 41 of each converter transformer unit is connected to a downwardly extending spray delivery pipe 44, and the bottom end of the spray release pipe is communicated with the spray delivery main pipe 43. The spraying and conveying pipe 44 is embedded with a pipe arrangement at the bottom of the converter transformer. The spray delivery main pipes 43 are arranged in one-to-one correspondence with the converter transformer units.
The spray release pipe 41, the extension pipe 41a, the fourth spray branch pipe 424, the fifth spray branch pipe 425 and the sixth spray branch pipe 426 may be made of perforated stainless steel pipes, or spray heads may be disposed at appropriate positions on the pipe bodies, so as to cover the converter body, the oil tank 11, the oil storage tank 13, the root of the casing 14 and the oil pool 17 in a spraying and flowing manner.
The fire monitor system 50 comprises a plurality of fire monitors 51, wherein the fire monitors 51 can be arranged on the cornice 16 at the top of the converter transformer hall side, and can also be arranged on a fire monitor tower of a converter transformer square according to requirements.
The embodiment shown in fig. 5 and 6 is a mode of being arranged on the cornice 16, and the fire monitor 51 is optimally arranged between the adjacent converter transformer units, namely, the fire wall 15 is correspondingly arranged above, the injection direction of the muzzle of the fire monitor can be adjusted up and down, left and right, so as to accurately send the compressed air foam to the position where a fire happens, and each converter transformer can be matched with two fire monitors, so that the converter transformer body, the oil tank, the oil storage cabinet, the sleeve root and the oil pool can be covered according to actual conditions, and the investment of the fire monitors is saved. Of course, the arrangement mode can be set right above the converter transformer unit according to actual conditions, or other arrangement modes meeting the operation requirements are not illustrated.
The fire monitor 51 is connected to the compressed air foam generating device through a fire monitor delivery pipe 52, as shown in fig. 5, the fire monitor 51 is located near the outer side of the cornice 16, the fire monitor delivery pipe 52 is arranged along the arrangement direction of the converter transformer units inside the cornice 16, and the fire monitor 51 is communicated with the fire monitor 51 through a branch pipe 53 at a position corresponding to the fire monitor 51. As shown in fig. 6, in order to ensure that the far-end fire monitor 51 can have sufficient mixed foam solution and injection pressure, the fire monitor delivery pipes 52 and the fire monitors 51 are arranged in a one-to-one correspondence manner, or in order to save pipelines and arrangement space, 1 fire monitor delivery pipe 52 can be shared by 2 or 3 fire monitors 51, and the specific arrangement manner is subject to actual requirements. 3 layers of brackets 54 are fixed on the outer wall of the valve hall on the cornice 16, and 2 fire monitor conveying pipes 52 are jointly arranged on 1 bracket 54, so that the fire monitor conveying pipes 52 are reasonably arranged on the cornice 16.
When the fire monitor 51 is installed on the fire monitor tower of the converter transformer plaza, the fire monitor 51 is also connected to the compressed air foam generating device through the fire monitor transport pipe 52, and the fire monitor transport pipe 52 is arranged on the converter transformer plaza side.
Except the arrangement structure of the fixed spraying system and the fire monitor system, the fire hydrant system 60 is arranged at the appropriate position of the end part of the converter transformer square, the converter transformer is not influenced by the position and is transported, a fire hose and a foam gun can be connected according to actual use requirements, the fire monitor system is convenient for personnel to operate, the spraying range is flexible, the coverage surface is large, and supplementary protection can be formed for the converter transformer and the square.
The delivery line providing the mixed foam solution for the fire hydrant system 60 may be directly connected to the compressed air foam generating device in the fire-fighting equipment room 6, or may be connected to the fire monitor delivery main 54 as shown in fig. 4, or may be connected to the spray main 45.
The invention adopts the compressed air foam fire extinguishing system as the converter transformer fixed fire-fighting mode of the extra-high voltage converter station, and the compressed air foam has the advantages of high foam stability, good coverage, strong impact momentum, small water consumption and the like, so that the fire extinguishing efficiency is high, the fixed spraying system, the auxiliary fire monitor system and the fire hydrant system are cooperatively arranged, the response time of the whole system is short, and the traditional water spray fire extinguishing system and the foam spray fire extinguishing system can be effectively replaced.
Claims (9)
1. A compressed air foam fire extinguishing system arrangement structure of an extra-high voltage converter transformer is characterized in that a converter transformer wide field comprises N groups of converter transformers, each group of converter transformers is provided with a plurality of converter transformer units, and the compressed air foam fire extinguishing system arrangement structure further comprises a fixed spraying system (40), a fire monitor fire extinguishing system (50) and a fire hydrant system (60) which all adopt compressed air foam solution;
the fixed foam system (40) comprises a spray release pipe (41) arranged in each converter transformer unit, the spray release pipes (41) are connected to the compressed air foam generating device through spray conveying pipes (44), and the spray conveying pipes (44) are arranged on the outer side of the converter transformers;
the fire monitor system (50) comprises a plurality of fire monitors (51), the fire monitors (51) are arranged on a valve hall side cornice (16) of the converter transformer, the fire monitors (51) are connected with a compressed air foam generating device through fire monitor conveying pipes (52), and the fire monitor conveying pipes (52) are arranged on the converter transformer valve hall side; or the fire monitor (51) is arranged on a fire monitor tower of the converter transformer plaza, the fire monitor (51) is connected with the compressed air foam generating device through a fire monitor conveying pipe (52), and the fire monitor conveying pipe (52) is arranged on the converter transformer plaza side;
the fire hydrant system (60) comprises a fire hydrant (61) arranged on a converter transformer square, and the fire hydrant (61) is connected with a compressed air foam generating device through a pipeline.
2. The arrangement structure of a compressed air foam fire extinguishing system of an extra-high voltage converter transformer according to claim 1, characterized in that the compressed air foam generating device is located in a fire-fighting equipment room (6), and 1 fire-fighting equipment room (6) corresponds to 1 or more than 1 converter transformer;
every group of converter transformer establishes between the valve (10), is equipped with the control valve of control spray release pipe (41), fire gun (51) in the valve room (10), and spray delivery pipe (44) in every group converter transformer outside is through spraying female pipe (45) behind valve room (10) and connecting in the compressed air foam generating device in fire-fighting equipment room (6), fire gun delivery pipe (52) of every group converter transformer valve room side is through connecting in the compressed air foam generating device of fire-fighting equipment room (6) in fire-fighting equipment room (10) back through fire gun female pipe (55).
3. The arrangement structure of a compressed air foam fire extinguishing system of an extra-high voltage converter transformer according to claim 1, wherein each set of converter transformer is provided with a valve room (10), and a plurality of control valves and maintenance valves for controlling the spray release pipe (41), the fire monitor (51) are arranged in the valve room (10).
4. The arrangement structure of a compressed air foam fire extinguishing system of an extra-high voltage converter transformer as recited IN any one of claims 1 to 3, wherein a fire wall (15) is arranged between adjacent converter transformer units, the spray release pipe (41) is arranged between the converter transformer body and the fire wall (15), the spray release pipe (41) is transversely extended and arranged between the top of the converter transformer body and the top plate of the BOX-IN, and covers the oil collecting pit IN the converter transformer body and the BOX-IN, and the spraying and flowing range of the spray release pipe (41) of the extension pipe (41 b) on the valve hall side covers the lifting seat hole of the sleeve (14 b) on the valve side;
the spray release pipe (41) extends upwards to form a first spray branch pipe (421) at the position of the radiator (12), the top of the first spray branch pipe (421) is communicated with a transverse fourth spray branch pipe (424), and the spraying and flowing range of the fourth spray branch pipe (424) covers the area where the radiator (12) is located and a BOX-IN outer oil collecting pit;
the spray release pipe (41) extends upwards to form a second spray branch pipe (422) at a sleeve (14 a) at the top of the converter body, the top of the second spray branch pipe (422) is communicated with a transverse fifth spray branch pipe (425), and the spraying and flowing range of the fifth spray branch pipe (425) covers 2 sleeve (14 a) lifting seat orifices;
the spraying release pipe (41) extends upwards to form a third spraying branch pipe (423) at the oil storage cabinet (13), the top of the third spraying branch pipe (423) is communicated with a transverse sixth spraying branch pipe (426), and the spraying and flowing range of the sixth spraying branch pipe (426) covers the area where the oil storage cabinet (13) is located;
the spraying release pipe (41) is connected with a spraying conveying pipe (44) extending downwards, and the bottom end of the spraying conveying pipe (44) is communicated with a spraying conveying main pipe (43).
5. The arrangement structure of the ultra-high voltage converter transformer compressed air foam fire extinguishing system is characterized in that the spray release pipe (41), the extension pipe (41 a), the fourth spray branch pipe (424), the fifth spray branch pipe (425) and the sixth spray branch pipe (426) are made of perforated stainless steel pipes or a plurality of spray heads are arranged on a pipeline.
6. The arrangement structure of the compressed air foam fire extinguishing system of the extra-high voltage converter transformer is characterized in that the fire monitor (51) is positioned on the cornice (16) corresponding to the upper part of the firewall (15), and the muzzle of the fire monitor (51) can be rotated to adjust the spraying direction.
7. The arrangement structure of a compressed air foam fire extinguishing system of an extra-high voltage converter transformer according to claim 4, wherein the fire monitor (51) is positioned on the upper outer side of the cornice (16), the fire monitor delivery pipe (52) is arranged on the upper inner side of the cornice (16) along the arrangement direction of the converter transformer units, and the fire monitor delivery pipe is communicated with the fire monitor (51) through a branch pipe (53) at the position corresponding to the fire monitor (51).
8. The arrangement structure of a compressed air foam fire extinguishing system of an extra-high voltage converter transformer according to claim 7, characterized in that 3 layers of brackets (54) are fixed on the outer wall of the valve hall on the cornice (16), and 2 fire monitor conveying pipes (52) are jointly arranged on 1 bracket (54).
9. The arrangement of an extra-high voltage converter transformer compressed air foam fire extinguishing system according to claim 4, characterized in that the liquid supply line of the fire hydrant system (60) is connected to a fire monitor main pipe (55) or to a spray main pipe (45).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010568324.0A CN111686386A (en) | 2020-06-19 | 2020-06-19 | Arrangement structure of compressed air foam fire extinguishing system of extra-high voltage converter transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010568324.0A CN111686386A (en) | 2020-06-19 | 2020-06-19 | Arrangement structure of compressed air foam fire extinguishing system of extra-high voltage converter transformer |
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| CN111686386A true CN111686386A (en) | 2020-09-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114534139A (en) * | 2020-11-24 | 2022-05-27 | 南京南瑞继保电气有限公司 | Fixed type compressed air foam fire extinguishing system of extra-high voltage converter station and control method |
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2020
- 2020-06-19 CN CN202010568324.0A patent/CN111686386A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114534139A (en) * | 2020-11-24 | 2022-05-27 | 南京南瑞继保电气有限公司 | Fixed type compressed air foam fire extinguishing system of extra-high voltage converter station and control method |
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