CN210250933U - Transformer substation fire extinguishing system based on compressed air foam technology - Google Patents
Transformer substation fire extinguishing system based on compressed air foam technology Download PDFInfo
- Publication number
- CN210250933U CN210250933U CN201920911218.0U CN201920911218U CN210250933U CN 210250933 U CN210250933 U CN 210250933U CN 201920911218 U CN201920911218 U CN 201920911218U CN 210250933 U CN210250933 U CN 210250933U
- Authority
- CN
- China
- Prior art keywords
- compressed air
- air foam
- foam
- injection
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a transformer substation fire extinguishing system based on compressed air foam technology, which comprises a compressed air foam generating device, a pipeline assembly, a compressed air foam ejector assembly for a transformer substation and a terminal pressure testing device, wherein the compressed air foam generating device is used for generating compressed air foam; the pipeline assembly comprises a conveying pipe, the conveying pipe is provided with an inlet end and an outlet end, and the inlet end is connected with the compressed air foam generating device; the compressed air foam ejector assembly for the transformer substation is connected with the outlet end of the conveying pipe and used for ejecting compressed air foam to the transformer substation. The system has the advantages of high fire extinguishing efficiency, small volume, large foam output, good transformer oil coverage, safe use and convenience for popularization and use in a large scale.
Description
Technical Field
The utility model relates to a fire control fire extinguishing apparatus technical field especially relates to a fire extinguishing systems of transformer substation based on compressed air foam technique.
Background
The transformer is the important equipment of power plant and transformer substation, has important influence to electric power supply quality, electric power system operating stability, in case the transformer breaks out the fire because of some reason, and electric power system will lose power, is in the paralysis state, has not only influenced the stability of power supply, also can cause huge property loss, endangers life safety even. The transformers in the general power system are mostly oil-immersed natural cooling type (oil-immersed transformer for short), the internal insulation pads and supports are mostly made of organic combustible substances such as paper boards, cotton yarns, cotton cloth and wood, and a large amount of insulation oil (mineral oil with a flash point not lower than 135 ℃, which is easily decomposed by heating and can be burnt by naked fire) is provided. Once the transformer is overloaded and short-circuited seriously, the combustible insulating material and the combustible insulating oil are decomposed and expanded under the action of high temperature or electric arc to be gasified, so that the pressure in the transformer is increased sharply, the shell is exploded seriously, a large amount of oil is sprayed, and the fire hazard can be further expanded by the burning flowing oil. Meanwhile, if the transformer oil is in a fire disaster, the fire can spread in a large area in a short time, and an electric shock accident is easily caused by carelessness in fire extinguishing, so that the life safety of rescue workers is threatened.
The fire risk of the transformer substation is high, and according to the current standard, the oil immersed transformer is generally provided with a water spray fire extinguishing system or a foam extinguishing agent fire extinguishing system at present. The water is used as the fire extinguishing agent to extinguish the oil fire of the transformer, on one hand, the fire extinguishing efficiency is low, most of the water sprayed to the transformer is lost, and the rest is easy to evaporate; on the other hand, because the water is not soluble with the transformer oil, the water can sink into the bottom of the transformer oil pool rapidly, and once the transformer oil on fire is extruded out of the oil pool along with the gathering of the water, the flowing fire can be generated instantly. In the traditional fire extinguishing system with the foam extinguishing agent, water and foam concentrate are mixed and then sprayed out, and air is sucked in at the position of a nozzle according to the siphon principle to form foam; the foam liquid has low proportion of foam, so the foaming effect is not obvious, the foam liquid separating time is short, and the foam rapidly separates out water to become the water fire extinguishing agent.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a fire extinguishing systems of transformer substation based on compressed air foam technique, this system fire extinguishing efficiency is high, small, foam output volume is big, and the compressed air foam sprays effectually, and transformer oil coverage is good, and is safe in utilization, is convenient for use widely in a large number.
According to the utility model discloses fire extinguishing systems of transformer substation based on compressed air foam technique, include:
a compressed air foam generating device for generating compressed air foam;
a duct assembly including a duct having an inlet end and an outlet end, the inlet end being connected to the compressed air foam generating device;
the compressed air foam ejector assembly for the transformer substation is connected with the outlet end of the conveying pipe and used for ejecting compressed air foam to the transformer substation; the compressed air foam ejector assembly for the transformer substation comprises a plurality of ejector pipe main bodies and a plurality of foam ejection devices arranged on each ejector pipe main body, wherein the plurality of ejector pipe main bodies are sequentially connected in series to form an enclosed structure; the plurality of foam injection devices are distributed on the circumferential surface of the injection pipe main body within the 90-degree included angle range, and comprise the foam injection devices which are distributed at intervals along the axial direction and are in the horizontal injection direction, the foam injection devices which are in the oblique downward injection direction and the foam injection devices which are in the vertical downward injection direction;
and the tail end pressure test device is connected with the foam injection device which is farthest away from the outlet end of the conveying pipe so as to test the starting, alarming and linkage functions of the system.
According to the utility model discloses fire extinguishing systems of transformer substation based on compressed air foam technique has following advantage: first, compare with current transformer substation's conflagration fire extinguishing technique, the utility model discloses the fire extinguishing system of transformer substation is owing to adopt the compressed air foam technology of putting out a fire, and the compressed air foam covers the transformer on, is difficult for dropping, can cool down to the transformer fast lastingly. Meanwhile, the compressed air foam has good flowing property on the oil surface of the transformer, and the oil surface is ensured to be quickly covered. In addition, the compressed air has even and compact foam foaming, better burning resistance and longer water bleeding time. Therefore, the compressed air foam aims at transformer oil liquid fire, and has the advantages of high fire extinguishing efficiency, difficulty in reigniting after fire extinguishment, fire extinguishing agent saving, difficulty in causing secondary disasters such as flowing fire and the like. The second, perfect through the configuration of functional block, can combine conflagration automatic alarm system, can realize the automatic fire protection of transformer substation, improved the intelligent degree of transformer substation's work of putting out a fire on the one hand, on the other hand reduces the configuration of conflagration prevention and control personnel of putting out a fire, and then in case the conflagration takes place, reduces the injury of conflagration to personnel. Third, because the utility model discloses fire extinguishing systems of transformer substation based on compressed air foam technique mainly comprises compressed air foam ejector subassembly for device, pipeline subassembly and transformer substation are produced to the compressed air foam, and is small, and compressed air foam output quantity is big, and the compressed air foam sprays effectually, and transformer oil level coverage nature is good, and is safe in utilization, is convenient for popularize and apply in a large number.
According to one embodiment of the utility model, the conveying pipe comprises a main conveying pipe and at least one compressed air foam partition conveying pipe, and one end of each compressed air foam partition conveying pipe is respectively communicated with the main conveying pipe; the other end of each compressed air foam partition conveying pipe is the outlet end; and each outlet end is connected with one compressed air foam ejector assembly for the transformer substation in a one-to-one correspondence mode.
According to the utility model discloses further embodiment, the pipeline subassembly still includes main electric butterfly valve and subregion electric butterfly valve, main electric butterfly valve sets up on the main conveyer pipe, the quantity of subregion electric butterfly valve with the quantity of compressed air foam subregion conveyer pipe is the same, subregion electric butterfly valve sets up one-to-one on the compressed air foam subregion conveyer pipe.
According to the utility model discloses still further embodiment, the pipeline subassembly still includes the service valve, the quantity of service valve with the quantity of compressed air foam subregion conveyer pipe is the same, the service valve sets up one-to-one on the compressed air foam subregion conveyer pipe and be located subregion electric butterfly valve with between the main conveyer pipe.
According to the utility model discloses still further embodiment, the pipeline subassembly still includes the rivers indicator, the quantity of rivers indicator with the quantity of compressed air foam subregion conveyer pipe is the same, the rivers indicator sets up one-to-one on the compressed air foam subregion conveyer pipe and be located subregion electric butterfly valve with between the exit end.
According to some embodiments of the present invention, each of the plurality of injection tube main bodies has a first end and a second end, and the plurality of injection tube main bodies are sequentially connected in series to form the enclosed structure, wherein the second end of a previous injection tube main body is connected to the first end of a subsequent injection tube main body; when the outlet end of the delivery tube is connected to the first end of a first of the jet stack bodies, the second end of the last of the jet stack bodies is closed; when the outlet end of the delivery pipe is connected to the second end of the former and the first end of the latter of the two adjacent ejector tube bodies, the first end of the first ejector tube body and the second end of the last ejector tube body are respectively closed.
According to the utility model discloses further embodiment, the transformer substation still includes with compressed air foam sprayer subassembly: a plurality of pipe joints; when the outlet end of the delivery tube is connected to the first end of a first one of the injection tube bodies, a plurality of the tube joints are all through joints, one of the through joints is connected between the outlet end of the delivery tube and the first end of the first one of the injection tube bodies, and the remaining through joints are respectively connected between the second end of the preceding one of the injection tube bodies and the first end of the succeeding one of the injection tube bodies; when the outlet end of the delivery pipe is connected to the second end of the preceding injection pipe body and the first end of the succeeding injection pipe body of the two injection pipe bodies adjacent to each other, one of the pipe joints is a three-way joint, and the others are through joints, one of the three-way joints is connected to the outlet end of the delivery pipe, the second end of the preceding injection pipe body and the first end of the succeeding injection pipe body of the two injection pipe bodies adjacent to each other, and the others are connected between the second end of the preceding injection pipe body and the first end of the succeeding injection pipe body of the remaining injection pipe bodies adjacent to each other, respectively.
According to some embodiments of the invention, the horizontal spray direction the foam injection device, the oblique downward spray direction the foam injection device and the vertical downward spray direction the foam injection device are not on the same radial cross section of the injection pipe body.
According to some embodiments of the present invention, the foam injection device is a dedicated compressed air foam nozzle, or the foam injection device is a light hole provided in the injection pipe body.
According to some embodiments of the utility model, terminal pressure testing device includes:
a manual switching valve, one end of which is connected to one of the foam injection devices farthest from the outlet end of the delivery pipe through a connection pipe; leading out compressed air foam for opening and closing the pipeline;
the other end of the manual switch valve, the pressure gauge and the standard compressed air foam nozzle tee joint are connected;
and the compressed air discharging foam funnel is positioned below the standard compressed air foam spray head and is connected with a compressed air foam discharging pipe.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a substation fire extinguishing system based on compressed air foam technology according to an embodiment of the present invention.
Fig. 2 is an assembly view of the injection pipe body, the foam injection device, and the pipe joint in the compressed air foam injection unit for a substation of fig. 1.
Fig. 3 is a schematic view of a radial cross section of fig. 2.
Fig. 4 is an assembly diagram of the injection pipe main body, the foam injection device and the pipe joint in the compressed air foam injector assembly for the transformer substation according to another embodiment of the present invention.
Fig. 5 is a schematic structural view of the end pressure testing device in fig. 1.
Fig. 6 is a schematic structural diagram of a fire extinguishing system of a transformer substation based on a compressed air foam technology according to another embodiment of the present invention.
Reference numerals:
fire extinguishing system 1000 of transformer substation
Compressed air foam generating device 1
Inlet end 211 and outlet end 212 main duct 213 compressed air foam zoned duct 214
Main electric butterfly valve 22 partition electric butterfly valve 23 service valve 24 water flow indicator 25
Compressed air foam ejector assembly 3 for transformer substation
End pressure testing device 4
Compressed air discharging foam funnel 44 connecting pipe 45
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
Compressed air foam is a globally accepted high-efficiency fire extinguishing agent at present, and the fire extinguishing efficiency of the compressed air foam is 4-5 times that of the traditional foam and 7-10 times that of water. The compressed air foam has strong adhesiveness, has good adhesion effect on a vertical smooth surface, and can effectively extinguish fire and continuously insulate heat and cool. The compressed air foam is a film-shaped foam group generated by mutually mixing foam liquid, water and air through mechanical action. The gas in the bubbles is air, and the compressed air foam extinguishing agent has the function of preventing the steam of the flammable or combustible liquid from entering a flame zone after the compressed air foam extinguishing agent covers the surface of the flammable or combustible liquid by a certain thickness, so that the air is isolated from the liquid level, and the heat in the flame zone is prevented from entering the surface of the flammable or combustible liquid.
A substation fire suppression system 1000 based on compressed air foam technology according to an embodiment of the present invention is described below with reference to fig. 1 to 6.
A substation fire suppression system 1000 based on compressed air foam technology according to an embodiment of the present invention is described below with reference to fig. 1 to 6.
As shown in fig. 1 to 6, according to the utility model discloses a transformer substation fire extinguishing systems 1000 based on compressed air foam technique, including compressed air foam production device 1, pipeline subassembly 2, transformer substation with compressed air foam sprayer subassembly 3 and terminal pressure testing device 4. Wherein, the compressed air foam generating device 1 is used for generating compressed air foam; the piping component 2 comprises a feeding pipe 21, the feeding pipe 21 having an inlet end 211 and an outlet end 212, the inlet end 211 being connected to the compressed air foam generating apparatus 1; the compressed air foam injector assembly 3 for the transformer substation is connected with the outlet end 212 of the conveying pipe 21 in a forward direction and is used for injecting compressed air foam to the ignition transformer substation; the compressed air foam injector assembly 3 for the substation comprises a plurality of injection pipe main bodies 31 and a plurality of foam injection devices 32 arranged on each injection pipe main body 31, wherein the plurality of injection pipe main bodies 31 are sequentially connected in series to form an enclosed structure; the plurality of foam injection devices 32 are distributed on the circumferential surface of the injection pipe main body 31 within the 90-degree included angle range and comprise foam injection devices in the horizontal injection direction, foam injection devices in the oblique downward injection direction and foam injection devices in the vertical downward injection direction which are distributed at intervals along the axial direction; the end pressure test device 4 is connected to a foam injection device 32 located furthest from the outlet end 212 of the duct 21 to verify system start-up, alarm and linkage functions.
Specifically, the compressed air foam generating apparatus 1 is used to generate compressed air foam. It can be understood that the compressed air foam generating device 1 can be externally connected with fire-fighting water and foam stock solution, and is controlled by an electrical control system to realize the proportional mixing of foam solution, water and compressed air and generate high-quality compressed air foam.
The piping component 2 comprises a delivery pipe 21, the delivery pipe 21 having an inlet end 211 and an outlet end 212, the inlet end 211 being connected to the compressed air foam generating device 1, the compressed air foam generated by the compressed air foam generating device 1 being deliverable through the delivery pipe 21.
A compressed air foam injector assembly 3 for a substation is connected to the outlet end 212 of the duct 21, the compressed air foam injector assembly 3 for a substation being used for injecting compressed air foam into a firing substation. It will be appreciated that the compressed air foam generated by the compressed air foam generating device 1 may be delivered to the compressed air foam injector assembly 3 for a substation via the delivery pipe 21, and the compressed air foam may be injected to the firing substation via the compressed air foam injector assembly 3 for a substation. The compressed air foam injector assembly 3 for the substation comprises a plurality of injection pipe main bodies 31 and a plurality of foam injection devices 32 arranged on each injection pipe main body 31, wherein the plurality of injection pipe main bodies 31 are sequentially connected in series to form an enclosed structure; the plurality of foam injection devices 32 are distributed on the circumferential surface of the injection pipe main body 31 in the 90 ° angle range, and include foam injection devices in the horizontal injection direction, foam injection devices in the obliquely downward injection direction, and foam injection devices in the vertically downward injection direction, which are distributed at intervals in the axial direction. It can be understood that, because the substation fire extinguishing system 1000 belongs to an unattended fixed fire extinguishing system, and the transformer as a protected object has the characteristics of large volume and complex structure, the fire extinguishing agent cannot be sprayed at a single angle by a fire monitor. The utility model discloses compressed air foam sprayer subassembly 3 for transformer substation adopts the enclosed construction (for example trilateral enclosed construction), and to the complex surface of transformer, adopts the actual effect that the multi-angle of multi-dimensional three-dimensional sprayed, and the realization compressed air foam of at utmost covers the disposable of transformer comprehensively. If transformer oil reveals and gets into the oil bath, form oil bath oil fire, the compressed air foam on the transformer can the multiple spot fall into the oil bath owing to pile up the effect, also can realize that the compressed air foam covers the oil level comprehensively fast.
The end pressure test device 4 is connected to the foam injection device 32 that is farthest from the outlet end 212 of the duct 21, i.e., at the head of the worst point of the system, to verify system start-up, alarm and linkage functions.
According to the utility model discloses fire extinguishing systems 1000 of transformer substation based on compressed air foam technique has following advantage: first, compare with current transformer substation's conflagration fire extinguishing technique, the utility model discloses fire extinguishing system 1000 of transformer substation is owing to adopt the compressed air foam technology of putting out a fire, and the compressed air foam covers the transformer on, is difficult for dropping, can cool down to the transformer fast lastingly. Meanwhile, the compressed air foam has good flowing property on the oil surface of the transformer, and the oil surface is ensured to be quickly covered. In addition, the compressed air has even and compact foam foaming, better burning resistance and longer water bleeding time. Therefore, the compressed air foam aims at transformer oil liquid fire, and has the advantages of high fire extinguishing efficiency, difficulty in reigniting after fire extinguishment, fire extinguishing agent saving, difficulty in causing secondary disasters such as flowing fire and the like. The second, perfect through the configuration of functional block, can combine conflagration automatic alarm system, can realize the automatic fire protection of transformer substation, improved the intelligent degree of transformer substation's work of putting out a fire on the one hand, on the other hand reduces the configuration of conflagration prevention and control personnel of putting out a fire, and then in case the conflagration takes place, reduces the injury of conflagration to personnel. Third, because the utility model discloses fire extinguishing systems 1000 of transformer substation based on compressed air foam technique mainly comprises compressed air foam ejector subassembly 3 for device 1, pipeline subassembly 2 and the transformer substation are produced to the compressed air foam, and is small, and compressed air foam output volume is big, and the compressed air foam sprays effectually, and the transformer oil level coverage is good, and is safe in utilization, is convenient for popularize and apply in a large number.
As shown in fig. 1, according to an embodiment of the present invention, the duct 21 includes a main duct 213 and at least one compressed air foam partition duct 214, and one end of each compressed air foam partition duct 214 is respectively communicated with the main duct 213; the other end of each compressed air foam partition transfer pipe 214 is an outlet end 212; each outlet end 212 is connected to one of the compressed air foam injector assemblies 3 for the substation in a one-to-one correspondence. Thus, a plurality of transformers can be protected at the same time by the compressed air foam partition duct 214 and the compressed air foam injector assembly 3 for a substation connected to each compressed air foam partition duct 214.
As shown in fig. 1, according to a further embodiment of the present invention, the pipeline assembly 2 further comprises a main electric butterfly valve 22 and a partition electric butterfly valve 23, the main electric butterfly valve 22 is disposed on the main delivery pipe 213 and can be used to open and close the compressed air foam entering the main delivery pipe 213 from the compressed air foam generating apparatus 1; the number of the partition electric butterfly valves 23 is the same as that of the compressed air foam partition delivery pipes 214, and the partition electric butterfly valves 23 are arranged on the compressed air foam partition delivery pipes 214 in a one-to-one correspondence manner and can be used for opening and closing the compressed air foam into the compressed air foam partition delivery pipes 214.
As shown in fig. 1, according to a still further embodiment of the present invention, the pipeline assembly 2 further includes the service valves 24, the number of the service valves 24 is the same as the number of the compressed air foam partition delivery pipes 214, and the service valves 24 are disposed on the compressed air foam partition delivery pipes 214 in a one-to-one correspondence and are located between the partition electric butterfly valves 23 and the main delivery pipes 213. It can be appreciated that when functional components on the compressed air foam partition delivery pipe 214 or the compressed air foam injector assembly 3 for the substation are required to be overhauled and replaced, the overhaul valve 24 can be closed to prevent the compressed air foam from entering the compressed air foam partition delivery pipe 214, and the overhaul operation is facilitated.
As shown in fig. 1, according to a still further embodiment of the present invention, the pipeline assembly 2 further includes water flow indicators 25, the number of the water flow indicators 25 is the same as the number of the compressed air foam partition conveying pipes 214, and the water flow indicators 25 are disposed on the compressed air foam partition conveying pipes 214 in a one-to-one correspondence and are located between the partition electric butterfly valves 23 and the outlet ends 212. It will be appreciated that the flow of compressed air foam can be monitored by the water flow indicator 25 and that when the water flow indicator 25 is activated, the water flow indicator 25 will signal the coordinated control of the room to pinpoint the area and know whether there is a leak in the pipe 21 or whether the compressed air foam injector assembly 3 for the substation is injecting compressed air foam.
As shown in fig. 1 and 6, according to some embodiments of the present invention, each injection pipe main body 31 has a first end and a second end, and a plurality of injection pipe main bodies 31 are sequentially connected in series to form the aforementioned surrounding structure, wherein the second end of the former injection pipe main body 31 is connected to the first end of the latter injection pipe main body 31; as shown in fig. 6, when the outlet end 212 of the delivery pipe 21 is connected to the first end of the first ejector tube body 31, the second end of the last ejector tube body 31 is closed; as shown in fig. 1, when the outlet end 212 of the delivery pipe 21 is connected to the second end of the preceding and first ends of the succeeding injection pipe bodies 31 of the two injection pipe bodies 31 adjacent to each other, the first end of the first injection pipe body 31 and the second end of the last injection pipe body 31 are closed, respectively. Thereby, the connection of the outlet end of the delivery pipe to the compressed air foam injector assembly 3 for the substation is conveniently achieved.
As shown in fig. 2 and 3, according to some embodiments of the present invention, the horizontal spray direction bubble jet means 32, the diagonal downward spray direction bubble jet means 32, and the vertical downward spray direction bubble jet means 32 are not on the same radial section of the spray pipe body. Therefore, the fire extinguishing effect is better.
As shown in fig. 2 and 3, in some embodiments, the injection pipe main body 31 is a straight pipe, and the plurality of foam injection devices 32 are distributed on the circumferential surface of the injection pipe main body 31 within an angle range of 90 ° and include a row of foam injection devices in a horizontal injection direction, a row of foam injection devices in an oblique downward injection direction, and a row of foam injection devices in a vertical downward injection direction, which are axially spaced apart, wherein the foam injection devices in the horizontal injection direction, the foam injection devices in the oblique downward injection direction, and the foam injection devices in the vertical downward injection direction are not on the same radial section of the injection pipe main body 31; the included angle between the foam injection devices 32 in two adjacent rows is 45 degrees, and a three-direction three-dimensional injection mode for the transformer protection object can be realized.
In some embodiments, the compressed air foam injector assembly 3 for a transformer substation adopts a three-side surrounding structure for the transformer, three injection pipe bodies 31 are respectively fixed on three peripheral walls of the transformer, the height of the three injection pipe bodies exceeds the highest position of the transformer, and the other side of the transformer is an equipment inlet and outlet side. Therefore, horizontal, vertical and oblique angle injection is adopted for the complex surface of the transformer, the actual effect of three-dimensional multi-angle injection is achieved, and the compressed air foam can be fully covered on the transformer at one time to the greatest extent.
According to the utility model discloses further embodiment, transformer substation still includes with compressed air foam sprayer subassembly 3: a plurality of pipe joints 33; when the outlet end 212 of the delivery pipe 21 is connected to the first end of the first injection pipe body 31, the plurality of pipe joints 33 are all through joints, one of the through joints is connected between the outlet end 212 of the delivery pipe 21 and the first end of the first injection pipe body 31, and the rest of the through joints are respectively connected between the second end of the previous injection pipe body 31 and the first end of the next injection pipe body 31 (as shown in fig. 6); when the outlet end 212 of the delivery pipe 21 is connected to the second end of the preceding injection pipe body 31 and the first end of the succeeding injection pipe body 31 of the two injection pipe bodies 31 adjacent to each other, one of the plurality of pipe joints 33 is a three-way joint, and the others are through-ways joints, one of the three-way joints is connected to the outlet end 212 of the delivery pipe 21, the second end of the preceding injection pipe body 31 and the first end of the succeeding injection pipe body 31 of the two injection pipe bodies 31 adjacent to each other, and the others are connected between the second end of the preceding injection pipe body 31 and the first end of the succeeding injection pipe body 31 adjacent to each other, respectively (as shown in fig. 1 and 2). From this, connect injection pipe main part 31 and conveyer pipe 21 through coupling 33, and connect two liang of adjacent injection pipe main parts 31 to make compressed air foam ejector subassembly 3 for the transformer substation form enclosed structure and communicate with the exit end 212 of conveyer pipe 21, installation, maintenance and change are all convenient.
According to some embodiments of the present invention, the foam injection device 32 is a dedicated compressed air foam nozzle (as shown in fig. 2 and 3), or the foam injection device 32 is a light hole 34 (as shown in fig. 4) provided on the injection tube main body 31. Specifically, special compressed air foam shower nozzle and injection pipe main part 31 threaded connection, shower nozzle atomizing angle are 45 for the injection of terminal compressed air foam realizes the protection to the transformer. If no special requirement exists, the light hole 34 arranged on the injection pipe main body 31 can also be used as the foam injection device 32, a special compressed air foam nozzle does not need to be installed, and the device can also be used for injecting terminal compressed air foam so as to directly protect the transformer.
As shown in fig. 5, according to some embodiments of the present invention, the terminal pressure testing device includes a manual switch valve 41, a pressure gauge 42, a standard compressed air foam nozzle 43 and a compressed air foam discharging funnel 44. Specifically, one end of the manual switch valve 41 is connected to one of the bubble jet means 32 farthest from the outlet end 212 of the feed pipe 21 through a connection pipe 45, that is, one end of the manual switch valve 41 is connected to one end of the connection pipe 45, and the other end of the connection pipe 45 is connected to the bubble jet means 32 at the worst point in the system, and the compressed air bubbles are drawn out for opening and closing the connection pipe 45. The other end of the manual switch valve 41, the pressure gauge 42 and the standard compressed air foam nozzle 43 are connected in a three-way manner, the pressure gauge 42 is used for detecting the pressure of the foam injection device 32 at the most unfavorable point, and the flow coefficient of the standard compressed air foam nozzle 43 is the same as that of the foam injection device 32 with the minimum flow coefficient in the same transformer protection area, so that the flow rate of the standard compressed air foam nozzle is consistent with that of the foam injection device 32 under the same working pressure; the operational reliability of the system can be tested by normally opening the standard compressed air foam nozzles 43. A compressed air discharge foam funnel 44 is located below the standard compressed air foam nozzle 43, and the compressed air discharge foam funnel 44 is connected to a compressed air foam discharge pipe. This allows compressed air bubbles for detection to be discharged.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A transformer substation fire extinguishing system based on compressed air foam technology, its characterized in that includes:
a compressed air foam generating device for generating compressed air foam;
a duct assembly including a duct having an inlet end and an outlet end, the inlet end being connected to the compressed air foam generating device;
the compressed air foam ejector assembly for the transformer substation is connected with the outlet end of the conveying pipe and used for ejecting compressed air foam to the transformer substation; the compressed air foam ejector assembly for the transformer substation comprises a plurality of ejector pipe main bodies and a plurality of foam ejection devices arranged on each ejector pipe main body, wherein the plurality of ejector pipe main bodies are sequentially connected in series to form an enclosed structure; the plurality of foam injection devices are distributed on the circumferential surface of the injection pipe main body within the 90-degree included angle range, and comprise the foam injection devices which are distributed at intervals along the axial direction and are in the horizontal injection direction, the foam injection devices which are in the oblique downward injection direction and the foam injection devices which are in the vertical downward injection direction;
and the tail end pressure test device is connected with the foam injection device which is farthest away from the outlet end of the conveying pipe so as to test the starting, alarming and linkage functions of the system.
2. The compressed air foam technology-based substation fire extinguishing system according to claim 1, wherein the delivery pipe comprises a main delivery pipe and at least one compressed air foam partition delivery pipe, and one end of each compressed air foam partition delivery pipe is respectively communicated with the main delivery pipe; the other end of each compressed air foam partition conveying pipe is the outlet end; and each outlet end is connected with one compressed air foam ejector assembly for the transformer substation in a one-to-one correspondence mode.
3. The compressed air foam technology-based substation fire extinguishing system according to claim 2, wherein the piping assembly further comprises a main electric butterfly valve and partition electric butterfly valves, the main electric butterfly valve is disposed on the main conveying pipe, the number of the partition electric butterfly valves is the same as the number of the compressed air foam partition conveying pipes, and the partition electric butterfly valves are disposed on the compressed air foam partition conveying pipes in a one-to-one correspondence.
4. The compressed air foam technology-based substation fire extinguishing system according to claim 3, wherein the pipeline assembly further comprises service valves, the number of the service valves is the same as the number of the compressed air foam partition conveying pipes, and the service valves are arranged on the compressed air foam partition conveying pipes in a one-to-one correspondence and are located between the partition electric butterfly valves and the main conveying pipe.
5. The compressed air foam technology-based substation fire extinguishing system according to claim 3, wherein the piping assembly further comprises water flow indicators in the same number as the compressed air foam partition conveying pipes, the water flow indicators being provided on the compressed air foam partition conveying pipes in a one-to-one correspondence between the partition electric butterfly valves and the outlet ends.
6. A compressed air foam technology based substation fire extinguishing system according to any of the claims 1-5, wherein each of said injection pipe bodies has a first end and a second end, a plurality of said injection pipe bodies being connected in series in sequence forming said enclosed structure, wherein the second end of a previous injection pipe body is connected to the first end of a subsequent injection pipe body; when the outlet end of the delivery tube is connected to the first end of a first of the jet stack bodies, the second end of the last of the jet stack bodies is closed; when the outlet end of the delivery pipe is connected to the second end of the former and the first end of the latter of the two adjacent ejector tube bodies, the first end of the first ejector tube body and the second end of the last ejector tube body are respectively closed.
7. A substation fire extinguishing system based on compressed air foam technology according to claim 6, characterized in that the compressed air foam injector assembly for substations further comprises: a plurality of pipe joints; when the outlet end of the delivery tube is connected to the first end of a first one of the injection tube bodies, a plurality of the tube joints are all through joints, one of the through joints is connected between the outlet end of the delivery tube and the first end of the first one of the injection tube bodies, and the remaining through joints are respectively connected between the second end of the preceding one of the injection tube bodies and the first end of the succeeding one of the injection tube bodies; when the outlet end of the delivery pipe is connected to the second end of the preceding injection pipe body and the first end of the succeeding injection pipe body of the two injection pipe bodies adjacent to each other, one of the pipe joints is a three-way joint, and the others are through joints, one of the three-way joints is connected to the outlet end of the delivery pipe, the second end of the preceding injection pipe body and the first end of the succeeding injection pipe body of the two injection pipe bodies adjacent to each other, and the others are connected between the second end of the preceding injection pipe body and the first end of the succeeding injection pipe body of the remaining injection pipe bodies adjacent to each other, respectively.
8. A compressed air foam technology based substation fire extinguishing system according to any of the claims 1-5, characterized in that the foam injection means of the horizontal injection direction, the foam injection means of the diagonal downward injection direction and the foam injection means of the vertical downward injection direction are not on the same radial cross section of the injection pipe body.
9. A substation fire extinguishing system based on compressed air foam technology according to any of claims 1-5, characterized in that the foam injection means is a dedicated compressed air foam nozzle or the foam injection means is an aperture provided on the injection pipe body.
10. A substation fire extinguishing system based on compressed air foam technology according to any of claims 1-5, characterized in that the end pressure testing device comprises:
a manual switching valve, one end of which is connected to one of the foam injection devices farthest from the outlet end of the delivery pipe through a connection pipe; leading out compressed air foam for opening and closing the pipeline;
the other end of the manual switch valve, the pressure gauge and the standard compressed air foam nozzle tee joint are connected;
and the compressed air discharging foam funnel is positioned below the standard compressed air foam spray head and is connected with a compressed air foam discharging pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920911218.0U CN210250933U (en) | 2019-06-17 | 2019-06-17 | Transformer substation fire extinguishing system based on compressed air foam technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920911218.0U CN210250933U (en) | 2019-06-17 | 2019-06-17 | Transformer substation fire extinguishing system based on compressed air foam technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210250933U true CN210250933U (en) | 2020-04-07 |
Family
ID=70043107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920911218.0U Active CN210250933U (en) | 2019-06-17 | 2019-06-17 | Transformer substation fire extinguishing system based on compressed air foam technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210250933U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112972942A (en) * | 2021-03-18 | 2021-06-18 | 国网安徽省电力有限公司电力科学研究院 | Cable trench fireproof plugging system |
| CN114452581A (en) * | 2022-02-22 | 2022-05-10 | 应急管理部天津消防研究所 | Fault diagnosis device and method for compressed air foam fire extinguishing system of extra-high voltage converter station |
-
2019
- 2019-06-17 CN CN201920911218.0U patent/CN210250933U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112972942A (en) * | 2021-03-18 | 2021-06-18 | 国网安徽省电力有限公司电力科学研究院 | Cable trench fireproof plugging system |
| CN114452581A (en) * | 2022-02-22 | 2022-05-10 | 应急管理部天津消防研究所 | Fault diagnosis device and method for compressed air foam fire extinguishing system of extra-high voltage converter station |
| CN114452581B (en) * | 2022-02-22 | 2023-02-28 | 应急管理部天津消防研究所 | Fault diagnosis device and method for compressed air foam fire extinguishing system of extra-high voltage converter station |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110102001B (en) | Fire-fighting linkage control system | |
| CN103977516A (en) | Fire extinguishing system for energy storage units of lithium batteries | |
| CN210250933U (en) | Transformer substation fire extinguishing system based on compressed air foam technology | |
| CN101066493B (en) | Submerged nitrogen fire extinguishing system for closed space | |
| CN102335491B (en) | Pipe network type dry powder fire extinguishing system and method | |
| CN110279961A (en) | A kind of substation's fire extinguishing system based on compressed air foam technology | |
| CN106422122B (en) | Foam-nitrogen injection fire extinguishing system for transformer explosion fire | |
| CN106730551A (en) | A kind of froth fire extinguishing system | |
| CN113144467A (en) | Distributed all-nitrogen fire extinguishing system and method for power cabin of urban underground comprehensive pipe gallery | |
| CN106669084A (en) | Portable combined-type fire extinguishing system | |
| CN112473047A (en) | Fire extinguishing system and fire extinguishing method suitable for extra-high voltage converter station and extra-high voltage converter station | |
| CN211132786U (en) | Automatic fire extinguishing system for power equipment | |
| CN109432679A (en) | A kind of fire extinguishing system and its extinguishing method applied to converter station valve hall | |
| CN113663254A (en) | Acoustic low-pressure water mist fire extinguishing prevention and control device for battery box of energy storage power station | |
| CN202315058U (en) | Pipe network type powder extinguishing system | |
| CN201939920U (en) | Water mist fire extinguisher with preheated water | |
| CN102058948A (en) | Extinguishing method and device by water-mist of preheated water | |
| CN109459997B (en) | Combined type power plant fireproof and explosion-proof purging system and control method | |
| CN215585304U (en) | Full nitrogen fire extinguishing systems of city utility tunnel electric power cabin distributing type | |
| CN1939557A (en) | Automatic high-pressure fine spray extinguisher | |
| CN112972942B (en) | Cable trench fireproof plugging system | |
| CN113713289A (en) | Fire-fighting system and method suitable for lithium iron phosphate energy storage battery cabin | |
| RU2474449C1 (en) | Plant for gaseous fire suppression | |
| CN101699031A (en) | System for automatically extinguishing fire in long tunnel and extinguishing method thereof | |
| CN201492849U (en) | General foam rain control valve bank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |