CN115501519A - Converter station multi-fire-fighting system collaborative fire extinguishing overflow risk detection device and detection method - Google Patents
Converter station multi-fire-fighting system collaborative fire extinguishing overflow risk detection device and detection method Download PDFInfo
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- CN115501519A CN115501519A CN202211025304.4A CN202211025304A CN115501519A CN 115501519 A CN115501519 A CN 115501519A CN 202211025304 A CN202211025304 A CN 202211025304A CN 115501519 A CN115501519 A CN 115501519A
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- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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Abstract
The invention discloses a device and a method for detecting the risk of overflow of a converter station through the cooperative fire extinguishing of multiple fire extinguishing systems. The oil pit of the converter transformer station under the actual working condition is simulated, and the oil pit is used for detecting the overflow risk of the converter transformer station through a reduced-size local model, providing data support for risk assessment and providing technical support for the improvement of the fire-fighting capacity of the ultra-high voltage engineering in transportation and under construction and the establishment of related regulation specifications.
Description
Technical Field
The invention relates to the technical field of detection of power station fire-fighting equipment, in particular to a converter station multi-fire-fighting system collaborative fire-extinguishing overflow risk detection device and a detection method.
Background
The power grid is an important life line of national economy, ensures safe, reliable and stable operation of the power grid, and is vital to promotion and guarantee of national economy development. In a power transmission and transformation system of a power grid engineering, a converter station is the basis of long-distance high-voltage power transmission, has great significance in stable operation and is directly concerned with the safety of a power system and the quality guarantee of electric energy. The national grid company forms a multi-voltage-level power grid which is layered, partitioned and clear in structure and comprises an extra-high voltage power grid serving as a backbone grid frame, an extra-high voltage power transmission grid, a high voltage power transmission grid and a power distribution network. With the rapid development of the power grid scale and technology, fire fighting of different voltage classes faces different fire risks.
The converter station has large number of running equipment and high running temperature, and belongs to key fire-fighting and fire-fighting units. The diversity and technical complexity of electrical equipment devices impose strict requirements on the fire protection of the converter station. As a great amount of oil-filled electrical equipment is used in the converter station, most fire accidents belong to explosion or fire accidents caused by the oil-filled equipment, light persons damage the switchgear to cause monopole shutdown, heavy persons burn the converter equipment to force shutdown for maintenance, power transmission is seriously affected, and even the operation safety of a cross-regional power grid is endangered.
The national grid deploys a series of fire-fighting capacity improving measures aiming at large-scale oil-filled equipment areas of a flow-changing station and a transformer substation, wherein the added systems comprise a fire-fighting water monitor system, a low-power foam monitor system, a compressed air foam monitor system, an emergency oil discharge system and the like. Experiments prove that the newly added typical systems can effectively improve the fire handling capacity of the converter station. The fire extinguishing medium cannot extinguish the fire for the first time, the principle is that the fire extinguishing medium covers the surface of the combustible oil, the oil is prevented from contacting with air, oxygen is isolated, and therefore the fire extinguishing purpose is achieved, and after the fire extinguishing medium and the combustible oil are mixed, the volume of the fire extinguishing medium is increased, the fire extinguishing medium can diffuse to the surroundings, and the fire is spread. In order to prevent overflowing oil from diffusing, a foundation is separately arranged at the bottom of the converter transformer and used for supporting large oil-filled equipment, oil pits are formed around the oil-filled equipment, the oil pits are provided with double layers of finished galvanized grids, G353/30/50/W, grid rib plates are 35mm wide and 3mm thick, and the net size of each hole is 30 x 50. The upper layer of the grating is basically equal to the ground surface, the lower layer of the grating is used for placing a pebble layer, the thickness of the pebble layer is 250mm, the pebble layer is composed of graded pebbles with the grain diameter of 50mm-80mm, and the porosity is about 30%. The lower side of the lower layer grid is also provided with an overhead layer, the oil pit is provided with an oil collecting pit, and the oil collecting pit is provided with an oil discharge pipe. The grid has the hole for liquid infiltration passes through, and the grid on upper strata still has the effect that the earth's surface supported simultaneously, and the cobble layer is used for permeating combustible oil and fire extinguishing medium, and after combustible oil infiltration cobble layer, the air can be blocked to the low porosity of cobble layer, directly pinches the source of putting out a fire, and self heat absorption simultaneously helps the cooling to put out a fire, makes the combustible oil of burning cut off and keep apart the source of fire when passing the cobble layer, and oil and fire extinguishing medium get into the built on stilts layer, discharge under the effect of flowing back pipeline.
For a station, after a plurality of systems are newly added, the original emergency oil discharge accident pipeline is considered to be a deeply buried pipe of a converter transformer square or other places and is not synchronously upgraded. At present, aiming at a plurality of sets of fire extinguishing systems and different fire extinguishing media, the fire extinguishing systems and the fire extinguishing systems are applied simultaneously, and under the condition of starting oil discharge, whether comprehensive overflow risks exist, namely whether a liquid discharge pipeline can discharge combustible oil and the fire extinguishing media out of an oil collection pit in time, once the liquid discharge pipeline or a pebble layer is influenced by the viscosity of the fire extinguishing media or the caliber of the pipeline cannot reach the flow rate, the oil pit can be filled with the mixture of the oil and the fire extinguishing media in a short time, and the mixture is diffused everywhere or possibly overflows the oil pit to form flowing fire. In the prior art, a device and a method for evaluating and testing the overflow risk of the oil sump are not available.
The converter transformer overflow fire simulation device comprises a simulation oil pit, a fire source in an oil tank, an open oil pool and a flame-retardant fire insulation layer, wherein two opposite side walls of the open oil pool are provided with simulation net side sleeve lifting seat oil overflow ports, side walls adjacent to the two opposite side walls are obliquely provided with simulation valve side sleeves, and an ignition device is arranged in the open oil pool; the oil tank is communicated to the simulated oil storage cabinet in the open oil pool through an oil pipeline, and an oil pumping device is arranged on the oil pipeline. The utility model discloses a can reconstruct overflow conflagration scene that converter transformer net side sleeve pipe, valve side sleeve pipe, oil tank top etc. burst and cause, realize the simulation of conflagration scene such as different sizes net side sleeve pipe, valve side sleeve pipe, oil tank body, oil pit, still can realize the high temperature hot oil conflagration simulation of the inside conflagration heating transformer oil spilling of oil tank. The oil spilling speed is actively controlled by the oil well pump, and the simulation of the oil spilling speed of the broken casings with different sizes can be realized. But this utility model simulation in-process needs actually to ignite, and the risk assessment that overflows of oil pit under the condition of putting out a fire to different fire extinguishing systems synthesis does not relate to.
Disclosure of Invention
The invention aims to solve the technical problem of how to detect the risk of oil pit overflow after different fire extinguishing system combinations under the condition of not needing actual ignition.
The invention solves the technical problems through the following technical means:
a converter station multi-fire-fighting-system collaborative fire extinguishing overflow risk detection device comprises a first box body (1) for containing transformer oil and fire extinguishing medium mixed liquid;
comprises a second box body (2) for receiving the mixed liquid of the transformer oil and the fire extinguishing medium;
an oil pit of a local model with a reduced size is installed above the second box body (2), the oil pit comprises a shell (3), a first grid (31) and a second grid (32) are sequentially installed on the shell (3) from top to bottom, an inner cavity of the shell (3) is sequentially divided into a first space (34), a second space (35) and a third space (36) through the first grid (31) and the second grid (32), a spray head (40) is installed in the first space (34), a pipeline (4) is communicated between the first box body (1) and the spray head (40), and a water pump (41), a pressure gauge (42), an adjusting valve (43) and a flow meter (44) are connected in series with the pipeline (4);
a pebble layer (33) supported on a second grid (32) is correspondingly laid in the second space (35), a liquid discharge pipe (6) is installed at the bottom of the shell (3), the third space (36) is communicated with the second water tank (2) through the liquid discharge pipe (6), and the liquid discharge pipe (6) is detachably installed at the bottom of the shell (3);
a discharge port for discharging pebbles is formed in one side wall of the shell (3); the discharge opening is rotatably provided with a door (39).
The invention mainly aims at the fire hazard of a converter transformer station, and judges whether the existing accident oil discharge system has overflow risk under the condition of adapting to the working condition under the condition that a plurality of fire-fighting systems cooperatively extinguish the fire. The detection device simulates an oil pit of a converter transformer station under the actual working condition, the actual oil pit is simulated in a mode of a local model with a reduced size, and the detection device is used for detecting the overflow risk of the converter transformer station. If the mixed liquid can not smoothly pass through the pebble layer when entering the second space, and meanwhile, the third space layer is not filled, and the liquid level of the mixed liquid exceeds the first steel grating, the overflow risk caused by the adsorption and retention of the pebble layer under the working condition is shown. The mixed liquid smoothly passes through the second space and fills the third space, and the mixed liquid is also fully distributed in the second space, and the first steel grating at the high position of the liquid level indicates that the caliber of the liquid discharge pipe is small, and the mixed liquid cannot be discharged in time, so that the overflow risk is caused.
Further, rollers (321) are arranged on two opposite sides of the shell (3) except the discharge port, and the lower surface of the second grating (32) is in rolling fit with the rollers (321); the rolling direction of the roller (321) is towards or away from the discharge port; the discharge opening width is equal to the width of the second grid (32).
Furthermore, a baffle (322) is fixed on at least one side of the second grid opposite to the discharge opening, and the baffle (322) is higher than the height of the pebble layer.
Furthermore, the liquid discharge pipe (6) is mounted at the bottom of the shell (3) through a butt flange (61), an outlet at the other end of the liquid discharge pipe (6) is aligned with the second box body (2), a liquid discharge hole (37) is formed in the bottom of the shell (3), a bolt hole (38) for aligning with the butt flange (61) is formed in the circumferential side of the liquid discharge hole (37), and the bolt hole are fixed through a mounting bolt (62) and a nut (63).
Further, the nut (63) is welded to the position of the bolt hole (38), and the central threaded hole of the nut (63) is aligned with the bolt hole (38).
Furthermore, the shell (3) is supported above the second water tank (2) through a support frame (5), a support plate (51) used for supporting the shell (3) is installed on the upper side of the support frame (5), a through hole (52) for the liquid discharge pipe (6) to pass through is formed in the support plate (51), and meanwhile, a bolt through hole (53) for the bolt (62) to pass through is formed in the bolt through hole.
Furthermore, the door (39) is the whole side wall of the shell (3) and is made of a transparent acrylic plate, and a graduated scale is arranged on the outer surface of the transparent plate.
Furthermore, the spray head (40) is positioned below the upper side of the first space (34), and a pressure gauge is connected in series with the spray head (40).
The invention also provides a detection method of the converter station multi-fire-fighting system collaborative fire-extinguishing overflow risk detection device, which comprises the following steps,
(1) Debugging a water pump, a flowmeter, an adjusting valve and a pressure gauge related to the test model to ensure that the flow and pressure readings are displayed clearly;
(2) Adding a mixed solution tested in the test into the first box body, wherein the mixed solution is one of an oil-water mixed solution, an oil 3% foam mixed solution and an oil-water 3% foam mixed solution;
(3) Starting a water pump, controlling the flow of a pipeline according to the preset regulating valve of a detection purpose, and spraying the oil pit through a spray head;
(4) Data are recorded manually or in a camera shooting mode.
And further, after the experiment in the step (5) is finished, the discharge ports are opened, the second grating is drawn out to a certain position, the second grating is inclined downwards, pebbles are poured into a well placed container, the second grating is cleaned and placed on the roller 321, and new pebbles are placed in the next experiment.
The invention has the advantages that:
the invention mainly aims at the fire disaster of the converter transformer station, and judges whether the existing accident oil discharge system has overflow risk under the condition of adapting to the working condition under the condition that a plurality of fire-fighting systems are used for fire extinguishment cooperatively. The detection device simulates an oil pit of a converter transformer station under the actual working condition, the actual oil pit is simulated in a mode of a local model with a reduced size, and the detection device is used for detecting the overflow risk of the converter transformer station. If the mixed liquid cannot smoothly pass through the pebble bed when entering the second space, the third space layer is not filled, and the liquid level of the mixed liquid exceeds the first steel grating, the overflow risk caused by the adsorption and retention of the pebble bed under the working condition is shown. The mixed liquid smoothly passes through the second space and fills the third space, and meanwhile, the mixed liquid is also fully distributed in the second space, and the first steel grating at the high position of the liquid level indicates that the aperture of the liquid discharge pipe is small, so that the mixed liquid cannot be discharged in time, and the overflow risk is caused.
Through carrying out the comprehensive overflow risk test of multiple fire extinguishing systems in coordination with putting out a fire, provide data support for carrying out risk assessment.
The achievement can provide technical support for improving the fire-fighting capacity of the ultra-high voltage engineering in operation and under construction, and provides technical support for the subsequent establishment of relevant fire-fighting regulation specifications of the ultra-high voltage converter station.
Drawings
FIG. 1 is a back view of a structure of a detecting device according to an embodiment of the present invention.
FIG. 2 is a front view of a structure of a detecting device according to an embodiment of the present invention.
FIG. 3 is a view showing the installation structure of the casing and the second box of the detecting device according to the embodiment of the present invention.
FIG. 4 is a sectional view of the casing of the detecting device according to the embodiment of the present invention.
FIG. 5 is a disassembled structure view of the detecting device in the embodiment of the present invention shown in FIG. 4.
In the drawings, the components represented by the respective reference numerals are listed below:
the device comprises a first box body 1, a second box body 2, a shell 3, a first grid 31, a second grid 32, a first space 34, a second space 35, a third space 36, a spray head 40, a pipeline 4, a water pump 41, a pressure gauge 42, a regulating valve 43, a flowmeter 44, a pebble layer 33, a drain pipe 6, a butt flange 61, a drain hole 37, a bolt hole 38, a bolt 62, a nut 63, a support frame 5, a support plate 51, a through hole 52, a bolt through hole 53, a door 39, a roller 321 and a baffle 322.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. 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.
As shown in fig. 1-4: a converter station multi-fire-fighting system collaborative fire extinguishing overflow risk detection device and a detection method thereof comprise a first box body 1 for containing a mixed liquid of transformer oil and a fire extinguishing medium, and a second box body 2 for receiving the mixed liquid of the transformer oil and the fire extinguishing medium;
an oil pit of a reduced-size local model is arranged above the second box body 2, the actual oil pit is simulated in a reduced-size local model mode to form a caliber of 1m multiplied by 1m, the longitudinal height is consistent with the actual height, the oil pit includes shell 3, and the shell is made for the iron sheet, and first grid 31 and second grid 32 are installed from top to bottom in proper order to shell 3, and first grid 31 and second grid 32 all adopt the steel grating in this embodiment. The inner cavity of the shell 3 is sequentially divided into a first space 34, a second space 35 and a third space 36 by the first grid 31 and the second grid 32, the total height of the shell is 1750mm, the height of the first space is 400mm, the height of the second space is 550mm, the height of the third space is 800mm, the first space 34 is provided with a spray head 40, the first box body 1 to the spray head 40 are communicated with a pipeline 4, and the pipeline 4 is connected with a water pump 41, a pressure gauge 42, an adjusting valve 43 and a flow meter 44 in series; the first grid and the second grid are finished grids G353/30/50/W, grid ribs 35mm wide and 3mm thick, and the net size of holes is 30 x 50. The pressure gauge is a mechanical pressure gauge and is used for monitoring the liquid pressure in the test process. The flowmeter is an electromagnetic flowmeter and is used for monitoring the flow in the test process.
The second space 35 is correspondingly paved with a pebble layer 33 supported on the second grid 32, the thickness of the pebble layer is 250mm, the pebble layer is composed of graded pebbles with the grain diameter of 50mm-80mm, and the porosity is about 30%; a liquid discharge pipe 6 is arranged at the bottom of the shell 3, the third space 36 is communicated with the second water tank 2 through the liquid discharge pipe 6, and the liquid discharge pipe 6 is detachably arranged at the bottom of the shell 3. The drain pipe adopts DN50/DN500 specification.
In this embodiment, the pebble bed needs to be replaced due to the detection of the mixed liquid with different parameters, the porosity of the pebble bed, and the like. In order to facilitate the replacement of the pebble bed, a discharge port for discharging pebbles is formed in one side wall of the shell 3; the discharge opening is rotatably provided with a gate 39. The discharge opening may be formed by hinging the whole side wall of the housing 3, and opening one side of the exposed housing, or by forming a window in one side wall of the housing 3, the window being located at a position just above and below the pebble layer by a certain distance, for example, the height of the window is 80cm, and the pebble layer is located in the middle of the window. The gate 39 of the discharge opening can be fixed to the other side walls of the casing by means of a snap, the number of which can be several.
In order to discharge the pebbles rapidly, the present embodiment is further provided with rollers 321 on two opposite sides of the housing 3 except the discharge port, the number of the rollers 321 is generally 4, and one side of each roller is emphasized to be capable of bearing the weight of the second grid and the pebble layer. The lower surface of the second grill 32 is in rolling engagement with the roller 321; the rolling direction of the roller 321 is towards or away from the discharge port; the discharge opening width is equal to or slightly greater than the width of the second grid 32. When the second grid is drawn out, in order to prevent the pebbles from falling into the third space, a baffle 322 is fixed on the second grid at least on the side opposite to the discharge port, and the baffle 322 is higher than the height of the pebble layer. When the second grating is deodorized, all pebbles are limited on the second grating under the carrying effect of the baffle 322, and after the second grating is pumped to the outside for a certain distance, the second grating can be pressed downwards to incline the second grating, so that the pebbles can fall downwards under the action of gravity. It is possible to realize that one container is placed in the corresponding position. After the pebbles on the second grating are completely emptied, the second grating is cleaned and put back to the original position for the next detection.
As shown in fig. 3: the door 39 of the housing 3 may be made of a transparent acrylic plate, and a scale is provided on the outer surface of the transparent plate. For easy observation and reading.
In the embodiment, the shell can be a cylinder with a rectangular section formed by welding steel plates, but the cost is high and the weight is heavy. It is also possible to use a common wooden board, which however cannot bear the weight of the second grid and pebble bed. Therefore, if a common wood board is used, a metal bracket is required to be additionally arranged outside the shell 3, the rotating shaft of the roller 321 should penetrate through the wood board and be fixed with the bracket, and the weight of the pebble layer and the second grating is borne by the metal bracket.
As shown in fig. 4-5: the drain pipe 6 is mounted on the bottom of the casing 3 through a flange 61, the outlet of the other end of the drain pipe 6 is aligned with the second casing 2, a drain hole 37 is formed on the bottom of the casing 3, and a bolt hole 38 for aligning with the flange 61 is formed on the circumferential side of the drain hole 37 and is fixed by a mounting bolt 62 and a nut 63. The bolt holes of the butting flange are aligned with the bolt holes at the bottom of the shell, the bolt holes are fixed through bolts, the detachable installation of the liquid discharge pipe is realized, the liquid discharge pipes with different calibers are detected, the overflow risk assessment of the liquid discharge pipes with different calibers under the specified flow is verified, and data are obtained.
As shown in fig. 5: the nut 63 is welded into place in the bolt hole 38 with the central threaded hole of the nut 63 aligned with the bolt hole 38. The nut is located inside the shell, and when the demountable installation fluid-discharge tube, the bolt is conveniently and directly twisted outside, does not need to be fixed the nut alone, and the nut is located inside the shell, and also conveniently fixes the nut under the normal condition, welds the nut in the position of bolt hole, can make things convenient for the dismouting bolt.
As shown in fig. 5: the casing 3 is supported above the second water tank 2 by a support frame 5, a support plate 51 for supporting the casing 3 is mounted on the upper side of the support frame 5, a through hole 52 for the liquid discharge pipe 6 to pass through is formed in the support plate 51, and a bolt through hole 53 for the bolt 62 to pass through is formed in the support plate. When the shell is installed, the shell is fixed on the supporting plate to form an integral device, when the liquid discharge pipe is installed, the butt flange of the liquid discharge pipe is installed on the lower side of the supporting plate to be aligned with the through hole, the bolt penetrates through the bolt hole of the supporting plate to be finally fixed on the shell, and the supporting frame, the supporting plate, the shell and the liquid discharge pipe are assembled into a unified integral structure.
As shown in fig. 4: the spray head 40 is positioned below the top of the first space 34, and a pressure gauge is connected in series with the position of the spray head 40. The first space is an extension part of the shell, the device is an analog device, a converter transformer substation is arranged in an actual state, no first space exists around the large-scale power transformation equipment, the pebble layer is directly supported through the first grating, the first space of the device is used for detecting overflow risks, and the purpose of the first space at the position is on one hand to facilitate observation of whether the first space has accumulation of mixed liquid or not, and if yes, the overflow risks are proved to exist. On the other hand can wrap up the shower nozzle, and the injection of shower nozzle is the multi-angle diffusion formula, and first space can prevent to mix liquid blowout shell.
As shown in fig. 2: a connecting pipe 11 is communicated between the first box body 1 and the second box body 2, and the connecting pipe 11 is connected with a valve 12 in series. The outside of the first box body and the second box body are sleeved with frames for protection and support. First box and second box are the plastics box, and first box and second box are the box of same specification, and the top of second box is uncovered, and the top of first box is sealed and covers through the lid, and the frame is horizontal and vertical reinforcing bar concatenation forms. The connecting pipe is used for communicateing first box and second box, makes the mixed liquid in two boxes can use thoughtlessly, when need using the same mixed liquid to different specification test assembly, can open valve 12 and make the mixed liquid between two boxes circulate each other, and mixed liquid can recycle.
A detection method of a converter station multi-fire-fighting system collaborative fire extinguishing overflow risk detection device comprises the following steps,
(1) Debugging a water pump, a flowmeter, an adjusting valve and a pressure gauge related to the test model to ensure that the flow and pressure readings are displayed clearly;
(2) Adding a mixed solution for test into the first box body, wherein the mixed solution is one of an oil-water mixed solution, an oil 3% foam mixed solution and an oil-water 3% foam mixed solution;
(3) Starting a water pump, controlling the flow of a pipeline according to the preset regulating valve for detection purpose, and spraying the oil pit through a spray head;
(4) Recording data in a manual or camera shooting mode;
(5) After the experiment is finished, the discharge openings are opened, the second grating is drawn out to a certain position, the second grating is inclined downwards, the pebbles are poured into a container which is placed well, the second grating is cleaned and placed on the roller 321, and new pebbles are placed in the next experiment.
The comprehensive overflow risk test of the large-scale oil-filled equipment for fire hazard and various fire-fighting systems for fire collaborative extinguishment is carried out in 7 groups according to the listed test working conditions, and the statistics of the total test results are summarized in the following table.
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 should 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. A converter station multi-fire-fighting-system collaborative fire-extinguishing overflow risk detection device is characterized by comprising a first box body (1) for containing transformer oil and fire-extinguishing medium mixed liquid;
comprises a second box body (2) for receiving the mixed liquid of the transformer oil and the fire extinguishing medium;
an oil pit of a local model with a reduced size is installed above the second box body (2), the oil pit comprises a shell (3), a first grid (31) and a second grid (32) are sequentially installed on the shell (3) from top to bottom, an inner cavity of the shell (3) is sequentially divided into a first space (34), a second space (35) and a third space (36) through the first grid (31) and the second grid (32), a spray head (40) is installed in the first space (34), a pipeline (4) is communicated between the first box body (1) and the spray head (40), and a water pump (41), a pressure gauge (42), an adjusting valve (43) and a flow meter (44) are connected in series with the pipeline (4);
a pebble layer (33) supported on a second grid (32) is correspondingly laid in the second space (35), a liquid discharge pipe (6) is installed at the bottom of the shell (3), the third space (36) is communicated with the second water tank (2) through the liquid discharge pipe (6), and the liquid discharge pipe (6) is detachably installed at the bottom of the shell (3);
a discharge port for discharging pebbles is formed in one side wall of the shell (3); the discharge opening is rotatably provided with a door (39).
2. The fire extinguishing overflow risk detection device with coordination of multiple fire extinguishing systems of the converter station as claimed in claim 1, characterized in that rollers (321) are installed on two opposite sides of the housing (3) except for the discharge port, and the lower surface of the second grid (32) is in rolling fit with the rollers (321); the rolling direction of the roller (321) is towards or away from the discharge port; the discharge opening width is equal to the width of the second grid (32).
3. The device for detecting the overflow risk of fire extinguishing in coordination with multiple fire protection systems of a converter station according to claim 2, the method is characterized in that: and a baffle (322) is fixed on one side of the second grid opposite to the discharge port, and the baffle (322) is higher than the height of the pebble layer.
4. The device for detecting the fire-fighting overflow risk in coordination with multiple fire-fighting systems of a converter station according to any one of claims 1 to 3, wherein the drain pipe (6) is mounted at the bottom of the housing (3) through a butt flange (61), the outlet of the other end of the drain pipe (6) is aligned with the second box body (2), a drain hole (37) is formed at the bottom of the housing (3), bolt holes (38) for aligning with the butt flange (61) are formed in the circumferential side of the drain hole (37), and the drain hole is fixed through mounting bolts (62) and nuts (63).
5. The converter station multi-fire-fighting-system collaborative fire extinguishing overflow risk detection device according to claim 4, characterized in that: the nut (63) is welded to the position of the bolt hole (38), and the center threaded hole of the nut (63) is aligned with the bolt hole (38).
6. The device for detecting the overflow risk of the converter station in the coordinated fire extinguishing system according to claim 5, wherein: the shell (3) is supported above the second water tank (2) through a support frame (5), a support plate (51) used for supporting the shell (3) is installed on the upper side of the support frame (5), a through hole (52) for the liquid discharge pipe (6) to pass through is formed in the support plate (51), and meanwhile a bolt through hole (53) for the bolt (62) to pass through is formed in the bolt through hole.
7. The device for detecting the risk of fire overflow in coordination with multiple fire protection systems of a converter station according to claim 2 or 3, wherein: the door (39) is the whole side wall of the shell (3) and is made of a transparent acrylic plate, and a graduated scale is arranged on the outer surface of the transparent plate.
8. The device for detecting the overflow risk of the converter station multi-fire-fighting system in coordination with fire extinguishing according to any one of claims 1 to 3, characterized in that: the spray head (40) is positioned below the upper side of the first space (34), and a pressure gauge is connected in series with the spray head (40).
9. A detection method of a converter station multi-fire-fighting system collaborative fire extinguishing overflow risk detection device adopts the converter station multi-fire-fighting system collaborative fire extinguishing overflow risk detection device as claimed in any one of claims 1 to 8, and is characterized in that: comprises the following steps of (a) carrying out,
(1) Debugging a water pump, a flowmeter, an adjusting valve and a pressure gauge related to the test model to ensure that the flow and pressure readings are displayed clearly;
(2) Adding a mixed solution tested in the test into the first box body, wherein the mixed solution is one of an oil-water mixed solution, an oil 3% foam mixed solution and an oil-water 3% foam mixed solution;
(3) Starting a water pump, controlling the flow of a pipeline according to the preset regulating valve of a detection purpose, and spraying the oil pit through a spray head;
(4) Data are recorded manually or in a camera shooting mode.
10. The method for detecting the fire extinguishing overflow risk detection device in cooperation with multiple fire protection systems of the converter station as claimed in claim 9, further comprising the steps of (5) after the experiment is finished, opening a gate of a discharge port, drawing out the second grid to a certain position, inclining the second grid downwards, pouring pebbles into a container which is placed well, cleaning the second grid and placing the second grid on a roller 321 for placing new pebbles in next experiment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211025304.4A CN115501519B (en) | 2022-08-25 | 2022-08-25 | Device and method for detecting collaborative fire-extinguishing overflow risk of multiple fire-fighting systems of convertor station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117630338A (en) * | 2024-01-25 | 2024-03-01 | 云南大学 | Surface and underground coupled amphibious staggered zone pollutant transportation simulation device and method |
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| CN117630338B (en) * | 2024-01-25 | 2024-04-09 | 云南大学 | Surface and underground coupled amphibious staggered zone pollutant transportation simulation device and method |
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| Publication number | Publication date |
|---|---|
| CN115501519B (en) | 2023-07-25 |
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