CN114887259A - Extra-high voltage converter station valve hall plugging position and sleeve fire extinguishing and cooling system and using method - Google Patents

Abstract

The invention provides an extra-high voltage converter station valve hall plugging part and sleeve fire extinguishing and cooling system which comprises an oil-water collecting assembly, a smoke-blocking heat-insulating cooling assembly, a fire suppression assembly, a fire detection assembly and a control center in communication connection with the assemblies. According to the invention, the oil-water collecting assembly is arranged on the ground below the sleeve on the inner side of the valve hall, so that leaked transformer oil can be collected without influencing maintenance operation, and when a fire occurs, the closed cover plate is lifted up to prevent the fire from spreading to the inner side of the valve hall, so that other equipment in the valve hall is protected; the smoke-blocking heat-insulating cooling assembly carries out rapid cooling treatment on the plugging positions of the firewall and the wall bushing, protects the main structure of the firewall of the valve hall and reduces fire hazard; the fire suppression component can cover the wall bushing through the release tail end with the adjustable angle, can efficiently and accurately position the ignition position when fire occurs, and can rapidly process high-temperature hot oil fire caused by sleeve breakage or explosion.

Description

Extra-high voltage converter station valve hall plugging position and sleeve fire extinguishing and cooling system and using method

Technical Field

The invention relates to the technical field of fire safety of an extra-high voltage converter station, in particular to a valve hall plugging part and sleeve fire extinguishing and cooling system of the extra-high voltage converter station and a using method thereof.

Background

The high-voltage direct-current transmission system mainly comprises a transmitting-end alternating-current system, a rectifying station, a direct-current transmission line, an inversion station and a receiving-end alternating-current system, wherein the most important is the convertor station, and a convertor valve hall of the convertor station is the important factor of the whole direct-current transmission system, so that the functions of alternating current to direct current and direct current to alternating current are realized, and the high-voltage direct-current transmission system is equivalent to a heart of direct-current transmission, and therefore the reliable operation of equipment in the convertor valve hall is especially important for the direct-current transmission system.

The extra-high voltage converter transformer mainly adopts an arrangement mode that a valve side sleeve is inserted into a valve hall, and the valve hall needs to be plugged in the insertion position of the sleeve. As the converter transformer has high voltage level, large oil storage capacity, high operating temperature and high fire risk and harm, once a fire occurs, the valve hall plugging part is used as a key part for connecting the valve hall and the converter transformer and is also a key part for easily causing the fire. On one hand, the plugging position of the wall bushing is easily broken through when an external transformer is in a fire disaster, transformer oil flows into a valve hall to cause flowing fire, and meanwhile, external smoke spreads and radiant heat rushes in. On the other hand, transformer oil (mainly playing an insulating role) is contained in the wall bushing penetrating through the firewall of the valve hall, the wall bushing is easy to ignite due to fire of a transformer or the bushing fires due to self faults, the transformer oil in the wall bushing falls on the ground of the valve hall to cause flowing fire, and therefore, the fire protection on the blocking penetrating part (the part of the wall bushing entering the valve hall) on the inner side of the valve hall is enhanced, and the fire protection level has important significance for preventing the fire from spreading and expanding and increasing the fire protection level of the valve hall.

The invention discloses a fire-proof and explosion-proof experimental system of an extra-high voltage converter transformer, which is disclosed in the invention patent application with the publication number of CN112327105A, and discloses a scheme that an oil unloading pool is arranged at the bottom of the transformer, a fire extinguishing device is arranged on a wall, and a water spraying system is arranged at the top of the transformer, but the scheme aims at the body area of the converter transformer, does not consider the complex environment of the internal area of a valve hall and wall-through plugging, and particularly lacks the effective protection measures for the fire at the side sleeve and the plugging part of the valve, and is safe, environment-friendly and residue-free, meanwhile, the conventional measures such as oil discharge, fire dike, water spraying and the like are not suitable for being used in the limited and closed space of the valve hall, and a fire monitor is easily shielded by smoke and is difficult to accurately position and extinguish, so that great fire safety risks exist. The invention discloses a fire protection system for a valve side sleeve of an extra-high voltage converter transformer and a using method thereof, which are disclosed in patent application with publication number CN111346323A, and discloses a scheme for carrying out fire protection treatment on the inner side of a valve hall through a compressed air foam spraying system and an oil collection pit. But the scheme mainly aims at the fire protection of the valve hall sleeve, and the oil collecting pit has poor convenience in use. In addition, the protection of a firewall and a plugging part is not considered, the firewall and the wall-through plugging position are easy to cause structural damage due to high temperature, and a spray pipe arranged when the fire is serious has failure risk, thereby bringing serious influence on the safety of a valve hall.

Disclosure of Invention

The invention aims to provide a fire extinguishing and cooling system for protecting a valve hall plugging part, a wall bushing and a firewall and a using method thereof.

The invention solves the technical problems through the following technical scheme: a system for sealing a valve hall of an extra-high voltage converter station and extinguishing and cooling a casing comprises an oil-water collecting component, a smoke-blocking heat-insulating cooling component, a fire suppression component, a fire detection component and a control center in communication connection with the components;

the oil-water collecting assembly comprises an oil collecting pit arranged on the inner side of the valve hall and a cobble layer arranged above the oil collecting pit in an overhead mode, the upper portion of the cobble layer is divided into a leakage area and a covering area through a closed cover plate, the covering area of the closed cover plate is the covering area, the leakage area is arranged on one side close to a firewall, and the closed cover plate can be lifted and separated between the firewall and the inner side of the valve hall;

the fire suppression component comprises a release terminal fixed above the firewall and a first medium supply unit connected with the release terminal, and the release direction of the release terminal is adjustable; the smoke-blocking heat-insulating cooling component comprises a spray pipe arranged on the firewall and a second medium supply unit connected with the spray pipe, wherein a plurality of spray holes are formed in the surface of the spray pipe along the length direction, at least the root position of the wall-penetrating sleeve is covered by the spray holes, and the firewall and the plugging part are cooled; the first medium supply unit and the second medium supply unit are capable of supplying fire fighting media, respectively;

the fire detection assembly is used for monitoring fire information at the position of the through-wall sleeve and feeding back the fire information to the control center, and the control center can control the states of the oil-water collection assembly, the smoke-blocking heat-insulating cooling assembly and the fire suppression assembly.

According to the invention, the oil-water collecting assembly is arranged on the ground at the inner side of the valve hall, so that leaked transformer oil and mediums such as water and foam for fighting can be collected when a fire occurs, flowing fire is inhibited, and fire spreading is prevented; when taking place the condition of a fire, transformer oil can enter into the oil collecting pit through the blowby area fast to can lift up through closing the apron, form the back-fire relief wall that the separation intensity of a fire stretchs between the region of catching fire that is close to firewall and the valve room inboard region, thereby avoid the condition of a fire to stretch to the valve room inboard, restrain trickling fire, other equipment in the protection valve room. The smoke-blocking heat-insulating cooling assembly can quickly cool the plugging part and the wall body on the inner side of the valve hall, prevent radiant heat and smoke from spreading, protect the plugging part of the valve hall and the main structure of a firewall and reduce fire hazard; the fire suppression component can cover the wall bushing through the release tail end with the adjustable angle, can efficiently and accurately position the ignition position when fire occurs, and can rapidly process high-temperature hot oil fire caused by sleeve breakage or explosion.

Preferably, the bottom of the oil collecting pit is provided with a guide outlet, a supporting net rack is arranged in the oil collecting pit in an overhead mode, and the cobble layer is stacked on the supporting net rack.

Preferably, a first grid cover plate is arranged on the leakage area.

Preferably, the side that hot wall was kept away from in the oil collecting pit is provided with the second grid apron that is in the support network frame top, the edge of second grid apron is through the baffle that sets up along vertical direction and cobblestone stack region and separate, and the top of second grid apron is articulated to be provided with flexible subassembly, flexible subassembly is connected with the lower surface of closing the apron is articulated, the edge of closing the apron is articulated to cooperate with first grid apron.

Preferably, two sides of the lower surface of the closed cover plate are respectively hinged with a self-telescopic hydraulic rod.

Preferably, a plurality of wall bushing and plugging parts are arranged on the fireproof wall in a penetrating manner, a spray pipe is arranged above the fireproof wall at each wall bushing position respectively, two releasing tail ends are arranged on two sides of each wall bushing position respectively, and one releasing tail end is shared between every two adjacent wall bushings.

Preferably, the first medium supply unit comprises a first flow divider, the first flow divider is connected in parallel with the plurality of release terminals through a pipeline, and the first flow divider is further connected with a first inert gas source, a first emergency fire fighting system interface and a fire extinguishing agent storage tank through pipelines respectively; valves are arranged on the pipelines connected with the first flow divider;

the second medium supply unit comprises a second flow divider, the second flow divider is respectively connected with the plurality of spray pipes in parallel through pipelines, the second flow divider is also connected with a second inert gas source, a second emergency fire-fighting system interface and a water storage tank through pipelines, and a fire pump and a filter are arranged between the water storage tank and the second flow divider; and valves are arranged on the pipelines connected with the second flow divider.

Preferably, the release tail end comprises an installation pipe and a communicating pipe which is coaxial with the installation pipe, the installation pipe is fixedly provided with an installation plate, the communicating pipe is rotatably arranged on the installation plate and communicated with the installation pipe, the installation plate is provided with a first motor, and the first motor can drive the communicating pipe to rotate along the axial direction;

the end of communicating pipe is provided with the release pipe, release pipe and communicating pipe normal running fit, the pivot of release pipe is perpendicular with communicating pipe, is provided with on communicating pipe with release pipe transmission complex second motor.

Preferably, the fire detection assembly is provided with a flame fire detector and an infrared fire detector above each wall bushing position, and the control center is further in communication connection with the infrared detector for monitoring the state of the inner side of the valve hall, the flame detector and the smoke detector.

The invention also provides a using method of the fire extinguishing and cooling system, which comprises the following steps,

s1: arranging an oil-water collecting assembly, a smoke-blocking heat-insulating cooling assembly, a fire suppression assembly and a fire detection assembly on the ground and the fireproof wall on the inner side of the valve hall, connecting the assemblies with a control center in a communication manner, and connecting the control center with an original infrared detector, a flame detector and a smoke detector in the valve hall in a communication manner;

s2: the installation positions of M wall bushing on the firewall are numbered from 1 to M in sequence, and the spray pipe, the release tail end, the oil-water collection assembly, the flame fire detector and the infrared fire detector are numbered in sequence at the same time, wherein the number range of the release tail end is 1-M + 1;

s3: when any position of No. 1-M in the fire detection assembly sends a fire alarm signal and at least two of the original infrared detector, the flame detector and the smoke detector at the inner side of the valve hall send alarm signals, the control center judges that a fire condition exists in the position of the area with the serial number X;

s4: the control center sends out a control command, and the rule is as follows,

if the area number X is 1, starting spray pipes and a closed cover plate No. X and X +1, and a release tail end No. X, X + 1;

if the area number X is M, a spray pipe No. X, X-1 and a closed cover plate are started, and a release tail end No. X, X +1 is started;

if the area number is 1< X < M, starting spray pipes and a closed cover plate No. X-1, X, X +1 and a release tail end No. X, X + 1;

the second medium supply unit provides fire water to the spray pipe by default, and the spray pipe sprays the fire water to the firewall and the plugging part to cool the firewall; the first media supply unit providing an insulating, high-efficiency clean fire-fighting media to the discharge tip by default;

if the flame fire detector is capable of detecting a flame signal, the release tip sprays the fire-fighting medium toward the location of the flame, and if the flame fire detector is obscured by smoke, the release tip releases the fire-fighting medium back and forth to the root, intermediate, and tip regions of the wall bushing.

The extra-high voltage converter station valve hall plugging part and sleeve fire extinguishing and cooling system and the using method provided by the invention have the advantages that: the oil-water collecting assembly is arranged on the ground below the sleeve on the inner side of the valve hall, so that leaked transformer oil and fire water, foam and other media for putting out fire can be collected when a fire occurs, and a part of area of the oil collecting pit is sealed by the closed cover plate above the cobblestone layer, so that a worker can directly walk on the closed cover plate, inspection and maintenance can be conveniently carried out at ordinary times, and normal overhauling operation cannot be influenced by the oil collecting pit; when taking place the condition of a fire, transformer oil can enter into the oil collecting pit through the blowby area fast to can lift up through closing the apron, form the back-fire relief wall that the separation intensity of a fire stretchs between the region of catching fire that is close to firewall and the valve room inboard region, thereby avoid the condition of a fire to stretch to the valve room inboard, restrain trickling fire, other equipment in the protection valve room. The smoke-blocking heat-insulating cooling assembly can rapidly cool the plugging positions of the firewall and the wall bushing on the inner side of the valve hall, block the spread of radiant heat and smoke, protect the main body structure of the firewall of the valve hall and reduce fire hazard; the fire suppression component can cover the wall bushing through the release tail end with the adjustable angle, can efficiently and accurately position the ignition position when fire occurs, and can rapidly process high-temperature hot oil fire caused by sleeve breakage or explosion.

Drawings

Fig. 1 is a schematic diagram of a valve hall plugging place and a sleeve fire extinguishing and cooling system of an extra-high voltage converter station according to embodiment 1 of the present invention;

FIG. 2 is a schematic diagram of an oil-water collecting assembly provided at a plugging position of a valve hall of an extra-high voltage converter station and a sleeve fire extinguishing and cooling system in embodiment 1 of the present invention;

FIG. 3 is a schematic diagram of a valve hall plugging part of an extra-high voltage converter station and a sealing cover plate of a sleeve fire extinguishing and cooling system provided in embodiment 1 of the present invention;

fig. 4 is a schematic diagram of a smoke-blocking, heat-insulating and cooling component and a fire suppression component of the extra-high voltage converter station valve hall plugging part and the casing fire extinguishing and cooling system provided in embodiment 1 of the present invention;

fig. 5 is a schematic diagram of a valve hall plugging place of an extra-high voltage converter station and a release end of a sleeve fire extinguishing and cooling system provided in embodiment 1 of the present invention;

fig. 6 is a schematic diagram of a use method of a valve hall blocking place and a casing fire extinguishing and cooling system of an extra-high voltage converter station according to embodiment 2 of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention are described below in detail and completely with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

As shown in fig. 1, the embodiment provides an extra-high voltage converter station valve hall plugging part and casing fire extinguishing and cooling system, which includes an oil-water collecting component 1, a smoke-blocking heat-insulating and cooling component 2, a fire suppression component 3, a fire detection component 5, and a control center (not shown) in communication connection with the components;

the oil-water collecting assembly 1 is arranged on the ground, close to the firewall 6, on the inner side of the valve hall; referring to fig. 2, the oil-water collecting assembly 1 comprises an oil collecting pit 1-9 arranged on the inner side of the valve hall and a cobble layer 1-1 arranged above the oil collecting pit 1-9 in an overhead manner, the upper side of the cobble layer 1-1 is divided into a leakage area and a coverage area by a closed cover plate 1-3 times, the coverage area of the closed cover plate 1-3 is the coverage area, the leakage area is arranged on one side close to a firewall 6, and the closed cover plate 1-3 can be lifted and blocked between the firewall 6 and the inner side of the valve hall;

the fire suppression module 3 includes a release terminal 3-1 fixed above the firewall 6 and a first medium supply unit (not shown) connected to the release terminal 3-1, and the release direction of the release terminal 3-1 is adjustable; the smoke-blocking heat-insulating cooling component 2 comprises a spray pipe 2-1 arranged on a firewall 6 and a second medium supply unit (not shown) connected with the spray pipe 2-1, wherein a plurality of spray holes (not shown) are formed in the surface of the spray pipe 2-1 along the length direction, at least the root positions of the wall-penetrating sleeves 5 are covered by the spray holes, and the firewall is cooled; the first medium supply unit and the second medium supply unit respectively supply fire fighting media to the release terminal 3-1 and the spray pipe 2-1; the fire detection assembly 9 is used for monitoring fire information at the wall bushing 5 and feeding back the fire information to the control center, and the control center can control the states of the oil-water collection assembly 1, the smoke-blocking heat-insulating cooling assembly 2 and the fire suppression assembly 3 to carry out fire fighting operation.

In the embodiment, the oil-water collecting assembly 1 is arranged on the ground below the sleeve on the inner side of the valve hall, so that leaked transformer oil and fire water, foam and other media for putting out fire can be collected when a fire occurs, the part of the area of the oil collecting pit 1-9 is sealed by arranging the closed cover plate 1-3 above the cobble layer 1-1, and workers can directly walk on the closed cover plate 1-3, so that the inspection and maintenance can be conveniently carried out at ordinary times, and the normal maintenance operation cannot be influenced by the oil collecting pit 1-9; when a fire occurs, the transformer oil can quickly enter the oil collecting pits 1-9 through the leakage areas, and can form a fire retardant wall for blocking the spread of the fire between the ignition area close to the firewall 6 and the area inside the valve hall by lifting the sealing cover plates 1-3, so that the fire is prevented from spreading to the valve hall, the flowing fire is inhibited, and other equipment in the valve hall is protected. The smoke-blocking heat-insulating cooling component 2 can rapidly cool the firewall and the plugging part of the wall bushing at the inner side of the valve hall, block the spread of radiant heat and smoke, protect the main structure of the firewall of the valve hall and reduce the fire hazard; the fire suppression component 3 can cover the wall bushing 5 through the release tail end 3-1 with the adjustable angle, the ignition position can be efficiently and accurately positioned when fire occurs, high-temperature hot oil fire caused by bushing rupture or explosion can be rapidly processed, and high-boiling-point, excellent electrical insulation performance and efficient clean fire extinguishing media such as perfluorohexanone are preferably used for the fire suppression component 3.

When the system works specifically, if a fire occurs at a valve hall plugging position or a valve side sleeve, the system gives the position of a fire area and immediately starts the oil-water collecting component 1, the smoke-blocking heat-insulating cooling component 2 and the fire suppression component 3 which are arranged in the corresponding area, the oil-water collecting component 1 quickly responds to and collects the converter transformer oil which flows in to suppress flowing fire and prevent the fire from spreading; the smoke-resistant, heat-insulating and cooling component 2 is sprayed at multiple angles towards the front, middle and back of the firewall direction to cool the wall body and the plugging part at the inner side of the valve hall, block the spread of radiant heat and smoke, protect the structural stability of the main body of the wall body of the valve hall and prevent the spread of fire to the converter transformer or the spread of the fire of the converter transformer to the valve hall; the fire suppression assembly 3 can put out a fire to the accurate release high boiling point in wall bushing position, excellent electric insulation performance, high-efficient clean fire extinguishing agent, and the first time control intensity of a fire prevents to appear trickling fire and the hot condition of fire of high temperature oil, if in case the intensity of a fire is out of control, hinder the thermal-insulated cooling subassembly 2 of cigarette, fire suppression assembly 3 all is equipped with emergent fire extinguishing systems interface, inserts it into outside rescue facility compressed air foam fire extinguishing systems and continues to put out a fire, realizes long-range emergent fire suppression, prevents the situation of a fire from expanding, promotes the fire protection level of special high voltage converter station valve room.

Referring to fig. 2, the bottom of the oil collection pit 1-9 is provided with a guide and discharge port 1-6, a support net rack 1-7 is arranged in the oil collection pit 1-9 in an overhead manner, a cobble layer 1-1 is stacked on the support net rack 1-7, and a leakage area above the cobble layer 1-1 is provided with a first grid cover plate 1-2.

The side face, far away from the firewall 6, of the oil collection pit 1-9 is provided with a second grating cover plate 1-5 above the supporting net rack 1-7, the edge of the second grating cover plate 1-5 is separated from the stacking area of the cobble layer 1-1 through a baffle (not shown) arranged in the vertical direction, and cobbles are filled in the area between the second grating partition plate 1-5 and the supporting net rack 1-7.

Referring to fig. 3, the closed cover plate 1-3 is hinged and fixed above the oil collecting pit 1-9, in this embodiment, the edge of the closed cover plate 1-3 is hinged and matched with the first grating cover plate 1-2, the telescopic component 1-4 is hinged and arranged above the second grating cover plate 1-5, the telescopic component 1-4 is hinged and connected with the lower surface of the closed cover plate 1-3, and the telescopic component 1-4 can drive the closed cover plate 1-3 to be lifted and opened when extending out, so that transformer oil, fire water, fire-fighting media and the like can rapidly enter the oil collecting pit 1-9, and the bottom of the oil collecting pit 1-9 guides liquid to the guide drain port 1-6 through setting an inclination angle. Two sides of the lower surface of the sealing cover plate 1-3 are respectively hinged with a self-telescopic hydraulic rod 1-8, so that the sealing cover plate 1-3 can be prevented from falling down suddenly, the use safety is guaranteed, the telescopic assembly 1-4 can select an air cylinder, a hydraulic cylinder and other equipment, and the self-telescopic hydraulic rod 1-8 can also be replaced by a pneumatic rod.

Referring to fig. 4, a plurality of wall bushing 5 penetrate through the firewall 6, the oil-water collecting assembly 1 is arranged below each wall bushing 5, a shower pipe 2-1 is arranged above each wall bushing 5, two release ends 3-1 are arranged on two sides of each wall bushing 5, and one release end 3-1 is shared between adjacent wall bushings 5, so that at least two release ends 3-1 can participate in fire fighting operation when a fire occurs in any position.

The first medium supply unit comprises a first flow divider 3-4, the first flow divider 3-4 is connected with a plurality of release tail ends 3-1 in parallel through pipelines, and the first flow divider 3-4 is also connected with a first inert gas source 3-3, a first emergency fire-fighting system interface 3-4 and a fire extinguishing agent storage tank 3-6 through pipelines respectively; and the pipelines connected with the first flow dividers 3-4 are provided with valves.

The second medium supply unit comprises a second flow divider 2-3, the second flow divider 2-3 is respectively connected with a plurality of spray pipes 2-1 in parallel through pipelines, the second flow divider 2-3 is further connected with a second inert gas source 2-5, a second emergency fire-fighting system interface 2-4 and a water storage tank 2-8 through pipelines, and a fire pump 2-7 and a filter 2-6 are further arranged between the water storage tank 2-8 and the second flow divider 2-3; and the pipelines connected with the second flow splitters 2-3 are provided with valves.

The first inert gas source 3-3 is a gas cylinder for storing inert gas, the first emergency fire-fighting system interface 3-4 can provide compressed air foam for the first flow divider 2-5, and the fire-extinguishing agent storage tank 3-6 is stored with an insulating fire-fighting medium, such as perfluorohexanone. When a fire occurs, the pipeline where the corresponding release tail end 3-1 is located can be controlled to be communicated according to the specific position of the accident, inert gas, compressed air foam or fire-fighting medium is provided for the release tail end 3-1 through the first flow divider 3-4, generally, the release tail end 3-1 is used for fire extinguishment by default through insulating fire-fighting medium, and the fire can be restrained through the inert gas; under the condition that the condition of a fire further spreads and enlarges, the safety of other equipment inside the valve hall is ensured by switching and using compressed air foam to extinguish the fire rapidly through manual regulation and control.

In this embodiment, the spraying pipes 2-1 are respectively sprayed at multiple angles towards the front, middle and back directions of the firewall 6 to cool the wall body and the plugging part inside the valve hall, prevent radiant heat and smoke from spreading, protect the structural stability of the main body of the wall body of the valve hall, and prevent a fire from spreading to the converter transformer or a fire of the converter transformer from spreading into the valve hall.

The releasing direction of the releasing tail end 3-1 is adjustable, specifically, referring to fig. 5, the releasing tail end 3-1 includes an installation pipe 3-2 and a communicating pipe 3-13 coaxially arranged with the installation pipe 3-2, the installation pipe 3-2 is fixedly provided with an installation plate 3-12, the communicating pipe 3-23 is rotatably arranged on the installation plate 3-12 and communicated with the installation pipe 3-2, the installation plate 3-12 is provided with a first motor 3-8, and the first motor 3-8 can drive the communicating pipe 3-13 to axially rotate, in this embodiment, the first motor 3-8 is in transmission fit with the communicating pipe 3-13 through a gear structure. Furthermore, the tail end of the communicating pipe 3-13 is also provided with a releasing pipe 3-10, the releasing pipe 3-10 is in rotating fit with the communicating pipe 3-13, a rotating shaft of the releasing pipe 3-10 is axially vertical to the communicating pipe 3-13, a second motor 3-9 in transmission fit with the releasing pipe 3-10 is arranged on the communicating pipe 3-13, the second motor 3-9 is in transmission fit with the releasing pipe through a gear structure, and the releasing pipe 3-10 is driven to rotate relative to the rotating shaft to adjust the angle. The second motor 3-9 drives the release pipe 3-10 to adjust the swing angle relative to the vertical direction, and the first motor 3-8 drives the communicating pipe 3-13 to rotate to adjust the orientation of the release pipe 3-10, so that the coverage range of the release tail end 3-1 is enlarged, and the fire fighting requirements of different positions are met.

In the process of installing and debugging the system, the relation between the rotating positions of the first motor 3-8 and the second motor 3-9 and the releasing direction of the releasing tail end 3-1 can be recorded through an absolute value encoder or the number of motor pulses, so that in the subsequent fire fighting operation process, if the specific situation of a site cannot be checked, the releasing tail end 3-1 can be controlled to be aligned to the root, the middle position and the end of the preset wall-penetrating casing 5 to release fire fighting media based on the data recorded in the early stage.

Fire detection subassembly 9 is provided with flame fire detector and infrared fire detector respectively above the wall penetrating position of every wall penetrating sleeve 5, through flame fire detector and infrared fire detector, carry out fire detection respectively, in time discover the condition of a fire, when there is the condition of a fire, the detector position that the discovery was acquireed is recorded to fire detection subassembly 9, and feed back to control center, control center is according to predetermined rule, control profit collection subassembly 1, fire suppression subassembly 3 and thermal-insulated cooling module 2 of hindering cigarette carry out work respectively and accomplish the fire control and put out a fire, the safety of guarantee sleeve pipe wall penetrating position. The fire detection assembly 9 can also be connected with an audible and visual alarm to send alarm information in time.

Because the fire condition at the inner side of the valve hall is generally caused by flowing fire caused by bursting of the sleeve at the side of the valve, the fire condition generally appears in the area where the wall penetrating position of the sleeve is located, and the flame fire detector and the infrared fire detector used in the implementation face to the root of the wall penetrating sleeve 5 at the monitored position, so that the detector cannot give false alarm due to the fire condition at other positions, the accuracy of alarm information is ensured, and the fire position can be directly determined.

The thermal-insulated cooling subassembly 2 of hindering cigarette and conflagration that this embodiment provided can release fire water respectively with conflagration suppression subassembly 3, the compressed air foam, inert gas, the fire control medium of difference such as fire control gas, the fire control medium that can freely select the use according to the condition of a fire at concrete during operation, because the uncertain factor of conflagration is more, in order to ensure safety, the thermal-insulated cooling subassembly 2 of hindering cigarette and the 3 equipartitions of conflagration suppression subassembly are put and are carried out long-range fire extinguishing in the position that does not receive the conflagration influence, and all be provided with emergent fire extinguishing system interface, can communicate with compressed air foam generating device and carry the compressed air foam and carry out emergent fire fighting.

An exemplary illustration of this embodiment is as follows: when detecting the condition of a fire, hinder cigarette thermal-insulated cooling subassembly 2 very first time to preventing hot wall 6 water spray cooling, conflagration suppression subassembly 3 then releases insulating fire-fighting medium to the condition of a fire position, like perfluor hexanone etc.. Under the condition that the condition of a fire further spreads and enlarges, the smoke-resistant heat-insulating cooling component 2 and the fire suppression component 3 are connected into an external compressed air foam fire extinguishing system to continuously extinguish fire, so that remote emergency fire extinguishing is realized, the condition of a fire is prevented from enlarging, and the fire protection level of a valve hall of the extra-high voltage converter station is improved.

Example 2

Referring to fig. 6, the method for using the fire extinguishing and cooling system provided by the present embodiment is as follows,

s1: arranging an oil-water collecting component 1, a smoke-resistant heat-insulating cooling component 2, a fire suppression component 3 and a fire detection component 9 on the ground and the fireproof wall on the inner side of the valve hall, connecting the components with a control center in a communication manner, and connecting the control center with an original infrared detector, a flame detector and a smoke detector in the valve hall in a communication manner;

s2: the installation positions of M wall bushing 5 on a firewall 6 are numbered from 1 to M in sequence, and meanwhile, a spray pipe 2-1, a release tail end 3-1, an oil-water collection assembly 1, a flame fire detector and an infrared fire detector are numbered in sequence, wherein the number range of the release tail end 3-1 is 1-M + 1;

s3: when any one of the 1-M positions in the fire detection assembly 9 sends out a fire alarm signal and at least two of the original infrared detector, the flame detector and the smoke detector at the inner side of the valve hall send out alarm signals, the control center judges that a fire condition exists in the area position with the serial number X;

in order to ensure accurate alarm information, the fire detection is carried out by combining the original detection systems on the inner side of the valve hall, only when at least two of the original detection systems on the inner side of the valve hall send fire signals, the fire condition on the inner side of the valve hall can be determined, and the fire position is determined by combining the alarm signals of the fire detection assembly 9; when there are a plurality of alarm positions in the fire detection module 9, fire fighting work is performed simultaneously for a plurality of positions. When the fire detection assembly 9 sends out an alarm signal and the original detection system of the valve hall does not detect the fire, the fire detection assembly can manually recheck to determine whether the fire exists or not, and manually issue instructions to control each assembly to carry out fire fighting operation.

S4: the control center sends out a control command, and the rule is as follows,

if the area number X is 1, starting spray pipes No. X and X +1 and a closed cover plate No. 1-3, and releasing ends No. X, X + 1;

if the area number X is M, activating spray pipe No. X, X-1 and closing cover plate No. 1-3, and releasing end No. X, X +1, 3-1;

if the area number is 1< X < M, starting spray pipes No. X-1, X, X +1 and a closed cover plate 1-3, and releasing tail ends No. X, X + 1;

in the embodiment, after the fire situation position is determined, the oil-water collecting assembly 1 and the spray pipe 2-1 on the two sides of the position are started to work so as to collect transformer oil, fire water and other media in time, and the safety of a firewall structure is guaranteed by cooling the firewall 6; the fire extinguishing work mainly depends on the releasing ends 3-1 at the two sides of the fire position to carry out accurate operation;

the second medium supply unit provides fire water to the spray pipe by default, and the spray pipe 2-1 sprays the fire water to the root parts of the firewall 6 and the wall bushing 5 to cool the firewall 6 so as to prevent the firewall 6 from being damaged by high temperature; the first medium supply unit supplies an insulating fire-fighting medium to the discharge end 3-1 by default;

the discharge tip 3-1 sprays the fire-fighting medium toward the location of the flame if the flame fire detector is able to detect a flame signal, and reciprocates to discharge the fire-fighting medium to the root, middle and top regions of the through-wall casing 5 if the flame fire detector is shielded by smoke.

In the fire fighting operation process, the video image of the inner side of the valve hall can be obtained through an original monitoring system in the valve hall or a monitoring system added along with a fire extinguishing and cooling system, the fire extinguishing is carried out by manually determining the fire position to control the releasing tail end 3-1, if the smoke is serious, the direction of the releasing tail end 3-1 can be determined through motor parameters recorded in the early stage to control, and when the fire is serious, an external compressed foam system can be manually used for providing a fire fighting medium for the releasing tail end 3-1.

The operation of putting out a fire is acquiescently used to the insulating fire control medium or the inert gas of safer environmental protection by default to this embodiment, reduces the influence to other electrical equipment in the valve room, and when the condition of a fire is great, just the compressed air foam of selective use ensures again that can ensure under the inboard fire safety's in valve room the condition, the fire control medium of more environmental protection safety of preferential use.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides an extra-high voltage converter station valve room shutoff department and sleeve pipe cooling system that puts out a fire which characterized in that: the device comprises an oil-water collecting component, a smoke-blocking heat-insulating cooling component, a fire suppression component, a fire detection component and a control center in communication connection with the components;

the oil-water collecting assembly comprises an oil collecting pit arranged on the inner side of the valve hall and a cobble layer arranged above the oil collecting pit in an overhead mode, the upper portion of the cobble layer is divided into a leakage area and a covering area through a closed cover plate, the covering area of the closed cover plate is the covering area, the leakage area is arranged on one side close to a firewall, and the closed cover plate can be lifted and separated between the firewall and the inner side of the valve hall;

the fire suppression assembly comprises a release terminal fixed above the firewall and a first medium supply unit connected with the release terminal, and the release direction of the release terminal is adjustable; the smoke-blocking heat-insulating cooling component comprises a spray pipe arranged on the firewall and a second medium supply unit connected with the spray pipe, wherein a plurality of spray holes are formed in the surface of the spray pipe along the length direction, at least the root position of the wall-penetrating sleeve is covered by the spray holes, and the firewall and the plugging part are cooled; the first and second medium supply units are capable of supplying fire fighting media, respectively;

the fire detection assembly is used for monitoring fire information at the position of the through-wall sleeve and feeding back the fire information to the control center, and the control center can control the states of the oil-water collection assembly, the smoke-blocking heat-insulating cooling assembly and the fire suppression assembly.

2. The extra-high voltage converter station valve hall plugging and casing fire extinguishing and cooling system according to claim 1, characterized in that: the oil collecting pit is characterized in that a guide and discharge port is formed in the bottom of the oil collecting pit, a supporting net rack is arranged in the oil collecting pit in an overhead mode, and the cobble layer is stacked on the supporting net rack.

3. The extra-high voltage converter station valve hall plugging and casing fire extinguishing and cooling system according to claim 1, characterized in that: and a first grid cover plate is arranged on the leakage area.

4. The extra-high voltage converter station valve hall plugging and casing fire extinguishing and cooling system according to claim 3, characterized in that: the side that prevents hot wall was kept away from in oil collection pit is provided with the second grid apron that is in the support rack top, the edge of second grid apron is through the baffle that sets up along vertical direction and the cobblestone region of piling up separate, and the top of second grid apron is articulated to be provided with flexible subassembly, flexible subassembly is connected with the lower surface of closing the apron is articulated, the edge of closing the apron is articulated to cooperate with first grid apron.

5. The extra-high voltage converter station valve hall plugging and casing fire extinguishing and cooling system according to claim 4, characterized in that: and two sides of the lower surface of the closed cover plate are respectively hinged with a self-telescopic hydraulic rod.

6. The extra-high voltage converter station valve hall plugging and casing fire extinguishing and cooling system according to claim 1, characterized in that: the fire wall is provided with a plurality of wall bushing, a spray pipe is arranged above each wall bushing, two releasing ends are arranged on two sides of each wall bushing, and the adjacent wall bushings share one releasing end.

7. The extra-high voltage converter station valve hall sealing and casing fire extinguishing and cooling system according to claim 6, characterized in that: the first medium supply unit comprises a first flow divider, the first flow divider is connected with the plurality of releasing tail ends in parallel through pipelines, and the first flow divider is also connected with a first inert gas source, a first emergency fire-fighting system interface and a fire extinguishing agent storage tank through pipelines respectively; valves are arranged on the pipelines connected with the first flow divider;

the second medium supply unit comprises a second flow divider, the second flow divider is respectively connected with the plurality of spray pipes in parallel through pipelines, the second flow divider is also connected with a second inert gas source, a second emergency fire-fighting system interface and a water storage tank through pipelines, and a fire pump and a filter are arranged between the water storage tank and the second flow divider; and valves are arranged on the pipelines connected with the second flow divider.

8. The system for blocking the valve hall of the extra-high voltage converter station and extinguishing the fire and cooling the casing according to claim 1, characterized in that: the releasing tail end comprises an installation pipe and a communicating pipe which is coaxial with the installation pipe, an installation plate is fixedly arranged on the installation pipe, the communicating pipe is rotatably arranged on the installation plate and communicated with the installation pipe, a first motor is arranged on the installation plate, and the communicating pipe can be driven by the first motor to rotate along the axial direction;

the end of communicating pipe is provided with the release pipe, release pipe and communicating pipe normal running fit, the pivot of release pipe is perpendicular with communicating pipe, is provided with on communicating pipe with release pipe transmission complex second motor.

9. The extra-high voltage converter station valve hall sealing and casing fire extinguishing and cooling system according to claim 7, characterized in that: the fire detection assembly is provided with a flame fire detector and an infrared fire detector above each wall bushing position respectively, and the control center is also in communication connection with the infrared detector for monitoring the state of the inner side of the valve hall, the flame detector and the smoke detector.

10. The method of using the fire suppression and cooling system of claim 9, wherein: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

s1: arranging an oil-water collecting assembly, a smoke-blocking heat-insulating cooling assembly, a fire suppression assembly and a fire detection assembly on the ground and the fireproof wall on the inner side of the valve hall, connecting the assemblies with a control center in a communication manner, and connecting the control center with an original infrared detector, a flame detector and a smoke detector in the valve hall in a communication manner;

s2: the installation positions of M wall bushing on the firewall are numbered from 1 to M in sequence, and the spray pipe, the release tail end, the oil-water collection assembly, the flame fire detector and the infrared fire detector are numbered in sequence at the same time, wherein the number range of the release tail end is 1-M + 1;

s3: when any one of the 1-M positions in the fire detection assembly sends out a fire alarm signal and at least two of the original infrared detector, the flame detector and the smoke detector at the inner side of the valve hall send out alarm signals, the control center judges that a fire condition exists in the area position with the serial number X;

s4: the control center sends out a control command, and the rule is as follows,

if the area number X is 1, starting spray pipes and a closed cover plate No. X and X +1, and a release tail end No. X, X + 1;

if the area number X is M, a spray pipe No. X, X-1 and a closed cover plate are started, and a release tail end No. X, X +1 is started;

if the area number is 1< X < M, starting spray pipes and a closed cover plate No. X-1, X, X +1 and a release tail end No. X, X + 1;

the second medium supply unit provides fire water to the spray pipe by default, and the spray pipe sprays the fire water to the root parts of the firewall and the wall bushing to cool the firewall and the plugging part; the first medium supply unit provides an insulating fire-fighting medium to the release tip by default;

if the flame fire detector is capable of detecting a flame signal, the release tip sprays the fire-fighting medium toward the location of the flame, and if the flame fire detector is obscured by smoke, the release tip releases the fire-fighting medium back and forth to the root, intermediate, and tip regions of the wall bushing.

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