CN212067520U - Fixed fire extinguishing system of extra-high voltage converter transformer - Google Patents
Fixed fire extinguishing system of extra-high voltage converter transformer Download PDFInfo
- Publication number
- CN212067520U CN212067520U CN202020401612.2U CN202020401612U CN212067520U CN 212067520 U CN212067520 U CN 212067520U CN 202020401612 U CN202020401612 U CN 202020401612U CN 212067520 U CN212067520 U CN 212067520U
- Authority
- CN
- China
- Prior art keywords
- compressed air
- foam
- air foam
- converter transformer
- valve
- 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
Landscapes
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The utility model discloses a fire extinguishing systems is fixed to special high voltage converter transformer. The system comprises a compressed air foam generating device, a foam pipeline, a partition valve, a foam distribution valve and a compressed air foam spraying system. The compressed air foam spraying system without a spray head and a fire-fighting branch pipe is adopted and is closely attached to a fire wall to be hidden, so that the compressed air foam spraying system not only has the characteristics of long foam liquid separation time, high stability, strong fire extinguishing capability and excellent after-combustion resistance, but also has the explosion impact resistance, the influence of the explosion impact of the transformer on the releasing device is reduced to the greatest extent, and the compressed air foam generating device is arranged far away from an explosion area, so that the generation of the compressed air foam is free from the explosion influence, and the safety and reliability of the system are ensured. The system has the advantages of simple structure, convenient installation and use, uniform foam spraying, large protection range, and capability of randomly changing the length, the shape and the foam coverage range of the spraying pipe, and can be used for both an extra-high voltage converter transformer and other converter transformers.
Description
Technical Field
The utility model relates to a power transformer technology of putting out a fire especially relates to a fixed fire extinguishing systems of special high voltage converter transformer.
Background
In recent years, with the rapid development of the ultra-high voltage direct current transmission technology, dozens of ultra-high voltage direct current transmission projects are established in advance in China, and hundreds of ultra-high voltage converter transformers are provided. The extra-high voltage converter transformer is core equipment of an extra-high voltage direct current transmission project, and the safe and stable operation of the extra-high voltage converter transformer is the basis of the normal operation of the extra-high voltage direct current transmission project. However, the extra-high voltage converter transformer has high voltage level, large energy, large oil storage amount, tight arrangement, high operation temperature, high fire risk and great harm, and once a fire occurs, great economic and property loss can be caused, and the safe and stable operation of a power grid can be threatened seriously. Therefore, the extra-high voltage converter transformer should take effective fire safety protection measures.
The fixed fire extinguishing system is one of the most effective means for extinguishing initial fire and reducing fire loss to the maximum extent. At present, fixed fire extinguishing systems for extra-high voltage converter transformers are mainly water spray fire extinguishing systems, foam spray fire extinguishing systems and the like, and the fire extinguishing systems can extinguish fire only by forming effective spray by spray nozzles under certain working pressure. In order to ensure the particle size and the atomization angle of fog drops, the effective range of the water spray and the foam spray nozzle is usually smaller, and the spray nozzle needs to be arranged close to a transformer in practical engineering application, so that the spray nozzle is greatly influenced by factors such as transformer explosion, fire, high temperature and the like. When the emergence explosion of special high voltage converter transformer sleeve pipe etc. was on fire, can lead to the sleeve pipe, rise the seat and give sound insulation and fall the facility such as board of making an uproar and explode to split and explode and fly, the part and the explosion shock wave that are blown off can destroy the fire control branch pipe and the shower nozzle that closes on, and then lead to the inefficacy of a whole set of fixed fire extinguishing systems, specifically:
(1) the water spray head, foam spray head, etc. that is destroyed by the explosion will fail directly. Because fire extinguishing systems such as water spray, foam spray and the like all rely on the tail end spray head to form effective spray for extinguishing fire, when the spray head is exploded or exploded to fly, the effective spray cannot be formed, and the fire extinguishing systems directly lose effectiveness. Furthermore, the nozzles closer to the location of the explosion are more susceptible to being destroyed by the explosion, and the location around the explosion point where the fire is most likely to be extinguished cannot be effectively sprayed to extinguish the fire.
(2) After part of the nozzles are damaged, a large amount of fire water or foam mixed liquid is wasted, and the spraying effect of other rest nozzles is seriously influenced. Because inside circulation latus rectum of water smoke shower nozzle and foam spray shower nozzle is far less than the entry internal diameter, after partial shower nozzle was destroyed, the branch pipe of being connected with it will become the leakage mouth or the pressure release mouth, causes a large amount of fire water or foam solution to flow from this department, and the pressure loss of whole set of fixed fire extinguishing systems, other remaining shower nozzles that are not destroyed also can't reach design pressure and form effectual spraying, so lead to whole set of fixed fire extinguishing systems to become invalid.
(3) The high temperature of the fire can cause the deformation of the fire branch pipe, thereby causing the failure of the system due to the fact that the system can not completely envelop the protection object, and seriously affecting the fire extinguishing effect.
Therefore, the existing extra-high voltage converter transformer fixed fire extinguishing system cannot meet the fire extinguishing requirement, has great fire safety hidden danger, and urgently needs effective fixed fire extinguishing measures.
Disclosure of Invention
In view of the not enough of current fire extinguishing scheme, the utility model provides a fire extinguishing efficiency is high, anti after-combustion ability is strong, have the fixed fire extinguishing system of special high voltage converter transformer of blast resistance impact function, adopts this system can effectively put out special high voltage converter transformer high temperature hot oil pond fire, oil spilling fire and trickling fire, solves special high voltage converter transformer difficult problem of putting out a fire, both can be used to special high voltage converter transformer, also can be used to other large-scale oil immersed transformer.
The utility model adopts the technical proposal that: the fixed fire extinguishing system for the extra-high voltage converter transformer is characterized by comprising a compressed air foam generating device, foam pipelines, partition valves, foam distribution valves and a compressed air foam spraying system, wherein the compressed air foam generating device is respectively communicated with the partition valves, the foam distribution valves and the compressed air foam spraying system through the foam pipelines; the compressed air foam spraying systems fixed on the firewall on the left side and the firewall on the right side are symmetrically arranged above the converter transformer body, so that the converter transformer body is completely covered by sprayed compressed air foam, the compressed air foam spraying systems fixed on the firewall in the valve hall are arranged above the converter transformer body, one part of the sprayed compressed air foam covers the oil conservator, and the other part of the sprayed compressed air foam covers the valve side sleeve.
The compressed air foam spraying system comprises spraying pipes, a foam conveying pipe and a connecting piece, wherein the foam conveying pipe is communicated with the two spraying pipes through the connecting piece; one end of the spray pipe is closed, and the other end of the spray pipe is opened to form a compressed air foam inlet; a plurality of rows of release holes are uniformly distributed on the surface of the spray pipe; the shower pipe is horizontally placed in the channel-section steel to and hug closely the hot wall setting of side about respectively with the channel-section steel, the compressed air foam that sprays covers converter transformer body completely.
Foam distribution valve include cross, orifice plate A, orifice plate B, orifice plate C, three orifice plate passes through the flange and installs the centre at cross and foam pipeline.
The ratio of the area of the pore plate A to the area of the pore plate C is 1:1, and the ratio of the area of the pore plate B to the area of the pore plate A and the area of the pore plate C is 1: 1-1: 5 respectively.
The partition valve of the utility model adopts any one of an electric valve, a pneumatic valve or a hydraulic valve.
Compressed air foam spraying system all adopt the preparation of high temperature resistant metal material.
The utility model discloses a theory of operation: in daily life, the compressed air foam generating device is in a standby working state, and the partition valve is in a normally closed state. When the ultrahigh voltage converter transformer explodes and fires, the fire alarm system detects a fire or an attendant finds the fire, the compressed air foam generating device is automatically or manually started immediately, the partition valve of the firing transformer is opened, the compressed air foam generating device generates high-stability compressed air foam according to a preset flow, the compressed air foam is conveyed to the foam distribution valve through the foam pipeline and the partition valve, the foam distribution valve respectively conveys the compressed air foam to the compressed air foam spraying systems 5 on the left firewall 9, the right firewall 8 and the valve hall firewall 10 according to a preset proportion, the compressed air foam sprayed by the compressed air foam spraying systems 5 on the left firewall 9 and the right firewall 8 completely covers the converter transformer body 7, and a part of the compressed air foam sprayed by the compressed air foam spraying systems 5 on the valve hall firewall 10 covers the conservator 7-1, the other part covers the valve side sleeve 12, and a high-stability foam covering layer is formed in the whole protection area while open fire is extinguished, so that the fire reignition is prevented.
The utility model has the advantages that:
1. the utility model discloses a compressed air foam spraying system of no shower nozzle, no fire control branch pipe to hug closely and prevent that hot wall hides and arranges, not only have the foam and separate out liquid time long, stability is high, the fire extinguishing ability is strong, anti characteristics such as excellent of reburning performance have blast resistance impact ability moreover, furthest has reduced the influence of transformer explosion impact to release, has guaranteed the fail safe nature of system.
2. The utility model discloses a compressed air foam produces device and keeps away from the setting of explosion region for the production of compressed air foam is avoided the explosion and is influenced. The foam pipeline is arranged at a position which is not influenced or slightly influenced by the explosion of the transformer, such as underground, behind a firewall, inside channel steel and the like, so that the foam conveying is not influenced by the explosion, and the safety and reliability of the system are ensured.
3. The utility model discloses simple structure, have antiknock function, safe and reliable, the foam sprays evenly, protection scope is big, installation convenient to use, can change shower length, shape and foam coverage wantonly, both can be used to special high voltage converter transformer, also can be used to other converter transformer.
Drawings
Fig. 1 is a schematic diagram of the system of the present invention;
fig. 2 is a front view of the system arrangement of the present invention;
fig. 3 is a side view of the system arrangement of the present invention;
fig. 4 is a top view of the system layout of the present invention;
FIG. 5 is a foam coverage effect diagram of the compressed air foam spray system of the present invention;
FIG. 6 is a schematic view of an embodiment of the shower installation of the present invention;
fig. 7 is a schematic view of the structure of the foam dispensing valve of the present invention.
Detailed Description
The present invention will be further described with reference to the following examples and accompanying drawings.
As shown in fig. 1 to 7, the fixed fire extinguishing system of the extra-high voltage converter transformer comprises a compressed air foam generating device 1, a foam pipeline 2, a partition valve 3, a foam distribution valve 4 and a compressed air foam spraying system 5, wherein the compressed air foam generating device 1 is respectively communicated with the partition valve 3, the foam distribution valve 4 and the compressed air foam spraying system 5 through the foam pipeline 2, and the foam pipeline 2 is arranged in a manner of being tightly attached to a firewall or in a position which is not affected by the explosion of the transformer; the compressed air foam spraying system 5 is provided with three sets which are respectively and horizontally fixed on a left firewall 9, a right firewall 8 and a valve hall firewall 10; the compressed air foam spraying systems 5 fixed on the firewall 9 on the left side and the firewall 8 on the right side are symmetrically arranged at a position 0.5-5 m above the converter transformer body 7, so that the converter transformer body 7 is completely covered by sprayed compressed air foam, the compressed air foam spraying systems 5 fixed on the firewall 10 in the valve hall are positioned at a position 1-10 m above the converter transformer body 7, one part of the sprayed compressed air foam covers the oil conservator 7-1, and the other part of the sprayed compressed air foam covers the valve side sleeve 12.
As shown in fig. 5, the compressed air foam spraying system 5 comprises a spraying pipe 5-1, a foam conveying pipe 5-2 and a connecting piece 5-3, wherein the foam conveying pipe 5-2 is communicated with the two spraying pipes 5-1 through the connecting piece 5-3; one end of the spray pipe 5-1 is closed, and the other end is opened to form a compressed air foam inlet; a plurality of rows of release holes 5-4 are uniformly distributed on the surface of the spray pipe 5-1; the spray pipe 5-1 is horizontally arranged in the channel steel 11 (as shown in fig. 6), and is respectively tightly attached to the left and right sides of the firewall together with the channel steel 11, and the converter transformer body 7 is completely covered by the compressed air foam spraying track 6.
As shown in fig. 2, 4, 5 and 6, the length of the spray pipe 5-1 of the compressed air foam spray system 5 on the left firewall 9 and the right firewall 8 is in the range of 1m to 20m (the length of the pipe is set according to the length of the transformer), and the length of the pipe in this embodiment is set as 8 m; the diameter of the spray pipe 5-1 is in the range of 20 mm-200 mm (the diameter is determined according to the required foam solution flow rate), and the diameter of the embodiment is set as 80 mm; the distance between the surface release holes 5-4 of the spray pipe 5-1 is in the range of 20 mm-100 mm (the distance is determined according to the flow rate of the foam solution required by unit length), and the distance between the release holes 5-4 is set to be 40 mm in the embodiment; in the embodiment, four rows of release holes 5-4 are uniformly distributed on the surface of a spray pipe 5-1, the aperture of the release holes 5-4 is in the range of 1 mm-30 mm (the hole distance is determined according to the flow rate of the foam solution required by unit length), and the aperture of the embodiment is set to be 8 mm; the angle beta between each row of relief holes is between 5 deg. and 35 deg. (as shown in figure 6).
As shown in fig. 2, fig. 3, fig. 5 and fig. 6, the compressed air foam spraying system 5 on the fire wall 10 of the valve hall is characterized in that the length of the spraying pipe 5-1 is set to be 5m, the diameter is 80mm, four rows of release holes 5-4 are uniformly distributed on the surface of the spraying pipe 5-1, the distance between the release holes is set to be 40 mm, the aperture of the release holes 5-4 is set to be 8mm, and the included angle β between the rows of release holes is 5 to 35 °, wherein the compressed air foam tracks 6 sprayed by the two rows of release holes on the upper portion cover the oil conservator 7-1, and the compressed air foam tracks 6 sprayed by the two rows of release holes on the lower portion cover the valve side.
As shown in FIG. 7, the foam dispensing valve 4 comprises a four-way valve 4-1, an orifice plate A4-2, an orifice plate B4-3 and an orifice plate C4-4, wherein the three orifice plates are arranged in the middle of the four-way valve 4-1 and the foam pipeline 2 through flanges. The ratio of the area of the orifice plate A4-2 to the area of the orifice plate C4-4 is 1:1, and the ratio of the area of the orifice plate B4-3 to the area of the orifice plate A4-2 and the area of the orifice plate C4-4 is 1:1 to 1:5, respectively. By selecting the pore diameter of each pore plate, the flowing foam is enabled to respectively convey compressed air foam to the compressed air foam spraying systems 5 on the left firewall 9, the right firewall 8 and the valve hall firewall 10 according to a preset proportion, namely the ratio of the foam on the left firewall 9 to the foam on the right firewall 8 is 1:1, and the ratio of the foam on the valve hall firewall 10 to the foam on the left firewall 9 and the foam on the right firewall 8 is 1: 1-1: 5 respectively.
The partition valve 3 of the present embodiment is an electric ball valve of model Q941F-16C among electric valves.
The compressed air foam spraying system 5 of this embodiment is all made of high temperature resistant metal material, and the junction is sealed by a high temperature resistant gasket, such as a graphite gasket, a metal gasket, etc.
Claims (6)
1. The fixed fire extinguishing system for the extra-high voltage converter transformer is characterized by comprising a compressed air foam generating device (1), a foam pipeline (2), a partition valve (3), a foam distribution valve (4) and a compressed air foam spraying system (5), wherein the compressed air foam generating device (1) is respectively communicated with the partition valve (3), the foam distribution valve (4) and the compressed air foam spraying system (5) through the foam pipeline (2), and the compressed air foam spraying system (5) is provided with three sets of compressed air foam spraying systems which are respectively and horizontally fixed on a left side firewall (9), a right side firewall (8) and a valve hall firewall (10); the compressed air foam spraying systems (5) fixed on the left firewall (9) and the right firewall (8) are symmetrically arranged above the converter transformer body (7) to enable the converter transformer body (7) to be completely covered by sprayed compressed air foam, and the compressed air foam spraying systems (5) fixed on the firewall (10) of the valve hall are arranged above the converter transformer body (7) to enable one part of the sprayed compressed air foam to cover the oil conservator (7-1) and the other part of the sprayed compressed air foam to cover the valve side sleeve (12).
2. The extra-high voltage converter transformer fixing fire extinguishing system according to claim 1, wherein the compressed air foam spraying system (5) comprises spraying pipes (5-1), foam conveying pipes (5-2) and connecting pieces (5-3), and the foam conveying pipes (5-2) are communicated with the two spraying pipes (5-1) through the connecting pieces (5-3); one end of the spray pipe (5-1) is closed, and the other end of the spray pipe is opened to form a compressed air foam inlet; a plurality of rows of release holes (5-4) are uniformly distributed on the surface of the spray pipe (5-1); the spray pipe (5-1) is horizontally arranged in the channel steel (11) and is tightly attached to the left side and the right side of the channel steel (11) respectively to form a firewall, and the converter transformer body (7) is completely covered by sprayed compressed air foam.
3. The extra-high voltage converter transformer fixed fire extinguishing system according to claim 1, wherein the foam distribution valve (4) comprises a four-way joint (4-1), an orifice plate A (4-2), an orifice plate B (4-3) and an orifice plate C (4-4), and the three orifice plates are arranged between the four-way joint (4-1) and the foam pipeline (2) through flanges.
4. The extra-high voltage converter transformer fixed fire extinguishing system according to claim 3, wherein the ratio of the area of the orifice plate A (4-2) to the area of the orifice plate C (4-4) is 1:1, and the ratio of the area of the orifice plate B (4-3) to the area of the orifice plate A (4-2) and the area of the orifice plate C (4-4) is 1: 1-1: 5 respectively.
5. The extra-high voltage converter transformer fixed fire extinguishing system according to claim 1, wherein the partition valve (3) is any one of an electric valve, a pneumatic valve or a hydraulic valve.
6. The extra-high voltage converter transformer fixing and fire extinguishing system according to claim 1 or claim 2, wherein the compressed air foam spraying system (5) is entirely made of high temperature resistant metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020401612.2U CN212067520U (en) | 2020-03-26 | 2020-03-26 | Fixed fire extinguishing system of extra-high voltage converter transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020401612.2U CN212067520U (en) | 2020-03-26 | 2020-03-26 | Fixed fire extinguishing system of extra-high voltage converter transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212067520U true CN212067520U (en) | 2020-12-04 |
Family
ID=73563074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020401612.2U Active CN212067520U (en) | 2020-03-26 | 2020-03-26 | Fixed fire extinguishing system of extra-high voltage converter transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212067520U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115671608A (en) * | 2022-11-04 | 2023-02-03 | 山东电力工程咨询院有限公司 | Anti-explosion automatic fire extinguishing system of large-scale oil-containing electrical equipment and control method |
-
2020
- 2020-03-26 CN CN202020401612.2U patent/CN212067520U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115671608A (en) * | 2022-11-04 | 2023-02-03 | 山东电力工程咨询院有限公司 | Anti-explosion automatic fire extinguishing system of large-scale oil-containing electrical equipment and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110882505A (en) | Transformer fire multi-mode coupling fire extinguishing true type test system | |
| CN102872556B (en) | Cable fire prevention device and method of wind generating set | |
| CN111346323B (en) | Fire protection system for valve side sleeve of extra-high voltage converter transformer and use method | |
| CN212067520U (en) | Fixed fire extinguishing system of extra-high voltage converter transformer | |
| CN108969950B (en) | High-pressure water mist fire extinguishing system for marine floating reactor containment | |
| KR100981287B1 (en) | Forest fire of extinguisher | |
| WO2014030840A1 (en) | Fire suppression spray nozzle including water supply hole | |
| CN216603867U (en) | Storage tank fire extinguishing device and outer floating roof storage tank | |
| CN211561680U (en) | Automatic balance pipe network pressure type nozzle | |
| CN210889018U (en) | Control valve group for foam water spraying system of tunnel | |
| CN203469281U (en) | Slow-release type automatic dry-powder extinguishing device | |
| CN104941098A (en) | Side spraying type automatic water mist fire extinguishing device | |
| CN110448825B (en) | Large floating roof tank fire comprehensive fire extinguishing system and fire extinguishing method | |
| CN104958848A (en) | Centralized injection type automatic fine water mist fire extinguishing plant | |
| CN110339519A (en) | A kind of pressing type sprinkling executing agency | |
| CN114272543A (en) | Spraying fire-fighting system and mixing method of powder fire extinguishing agent and spraying water flow | |
| CN212651264U (en) | Gas-liquid two-phase flow water mist fire extinguishing nozzle | |
| CN211188863U (en) | Fire-fighting system of battery replacing cabinet | |
| CN211068844U (en) | Water-seal fire-retardant explosion-venting device gas turbulence water-carrying-prevention mechanism | |
| CN115212493B (en) | Fire extinguishing system and method suitable for oil immersed transformer | |
| CN216855578U (en) | Fire extinguishing system for outer wall | |
| CN116712695B (en) | Quick-connection type internal water mist fixed-point fire extinguishing method for electric automobile power battery pack | |
| CN220213745U (en) | Annular water spray cooling system of horizontal storage tank | |
| CN212998098U (en) | Spraying fire-fighting system | |
| CN210827680U (en) | Integrated intelligent fire-fighting device of box type water supply pump station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |