CN110033588B - Sampling tube, fire detection equipment, early warning system, early warning method and device - Google Patents
Sampling tube, fire detection equipment, early warning system, early warning method and device Download PDFInfo
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- CN110033588B CN110033588B CN201910361584.8A CN201910361584A CN110033588B CN 110033588 B CN110033588 B CN 110033588B CN 201910361584 A CN201910361584 A CN 201910361584A CN 110033588 B CN110033588 B CN 110033588B
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- 238000005070 sampling Methods 0.000 title claims abstract description 387
- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000012544 monitoring process Methods 0.000 claims abstract description 29
- 238000005192 partition Methods 0.000 claims description 43
- 238000004891 communication Methods 0.000 claims description 33
- 230000001154 acute effect Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 5
- 230000003213 activating effect Effects 0.000 claims 2
- 239000007921 spray Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 239000002689 soil Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 230000008054 signal transmission Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 239000013307 optical fiber Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B31/00—Predictive alarm systems characterised by extrapolation or other computation using updated historic data
Abstract
The invention discloses a sampling tube, fire detection equipment, an early warning system, an early warning method and a device, wherein the method comprises the following steps: the fire detector transmits real-time data, fire early warning signals and equipment fault signals sent by the sampling tube to an auxiliary control system and a fire control system sampling point for monitoring and storage; the auxiliary control system transmits the stored real-time data, fire early warning signals and equipment fault signals to a substation control system or a substation monitoring center duty room; the fire control system sampling point transmits the stored real-time data, fire early warning signals and equipment fault signals to the fire control system. The invention has the advantages that: and the alarm signal of the cable trench or the cable tunnel is transmitted to the transformer substation in real time, and the alarm signal is directly transmitted to the fire protection system, so that the safety of the cable trench and the cable tunnel is ensured.
Description
Technical Field
The invention relates to the field of cable trench or cable tunnel fire early warning, in particular to a sampling tube, fire detection equipment, an early warning system, an early warning method and an early warning device.
Background
The fire alarm device is used in various business, industrial places, entertainment and other public places and has automatic fire detecting and manual alarm signal and circuit communication to display the fire alarm part on the screen of the control room or the duty room. The fire alarm system is fully used in China at present, and plays a good role in early warning and timely treatment.
The sampling pipe of the fire alarm of current cable pit or cable tunnel is the individual layer pipe of lateral wall trompil, and the rainwater can get into the sampling pipe, and the entering of rainwater can cause the influence to the data that the fire detector who is connected to the sampling pipe gathered, and then leads to the sampling pipe to gather information inaccurate.
Disclosure of Invention
The invention aims to solve the technical problem that a sampling tube for fire alarm of a cable trench or a cable tunnel in the prior art is not accurate enough in information acquisition.
The invention solves the technical problems through the following technical scheme:
a sampling tube comprising an inner layer sampling tube and a sleeve, wherein,
the tube wall of the inner layer sampling tube is provided with a first air hole;
the sleeve is sleeved outside the inner sampling tube, and a second air hole is arranged on the side wall of the sleeve which is not higher than the central shaft. Through setting up the sleeve pipe, effectively protect inlayer sampling tube, the setting of first gas pocket and second gas pocket prevents that the rainwater from getting into inlayer sampling tube simultaneously, prevents that the sampling tube from blockking up.
Preferably, the highest point of the second air hole is lower than the central axis of the sleeve. The highest point of the second air hole is lower than the central axis of the sleeve, so that rainwater can be prevented from flowing into the inner layer sampling tube from the second air hole.
Preferably, a first air hole is formed in the side wall of the inner layer sampling tube, which is positioned below the inner layer sampling tube; the first air hole is arranged to perform the function of air sampling.
The side walls of the sleeve, which are positioned below and/or at the left side and the right side, are provided with second air holes; the second air holes at the lower part are used for discharging water out of the sleeve as soon as possible after water enters the sampling tube, and the second air holes at the left side and the right side are used for completing air sampling by matching with the first sampling holes.
The aperture of the second air hole is larger than that of the first air hole. The design that second gas pocket aperture is greater than first gas pocket aperture guarantees that rainwater or earth plug up partial second gas pocket, and inlayer sampling pipe still has normal air current.
Preferably, a plurality of partitions are arranged between the inner wall of the sleeve and the outer wall of the inner sampling tube, the space between the sleeve and the inner sampling tube is divided into a plurality of mutually independent parts, and the included angle between the normal line of each partition and the central axis of the sleeve is one of an acute angle, an obtuse angle or a right angle;
The inner layer sampling pipe is provided with a first air hole on the pipe wall between two adjacent partitions, and the pipe wall of the sleeve pipe between two adjacent partitions is provided with a second air hole. The purpose of setting up the wall on the one hand is with inlayer sampling tube and sleeve pipe connection, guarantees stability, and secondly at the in-process of air sampling, guarantees that the air gets into inlayer sampling tube from the second gas pocket on the sleeve pipe and accomplishes the sampling through the first gas pocket on the inlayer sampling tube directly, avoids the air to flow in the sleeve pipe and influences the accuracy of sampling result and the instantaneity of sampling data.
Preferably, the central axis of the inner sampling tube is parallel to the central axis of the sleeve, and the central axis of the inner sampling tube is higher than the central axis of the sleeve. The inner sampling tube is guaranteed to be at a certain height from the ground, rainwater and soil are prevented from entering, and air circulation is guaranteed.
The invention also provides cable duct fire detection equipment which comprises the sampling tube and a fire detector, wherein the fire detector is connected with the sampling tube.
The invention also provides a cable duct fire early warning system, which comprises the sampling tube and/or the fire detector, and further comprises a direct-current uninterrupted power supply, a protocol converter, a transformer substation auxiliary control system, a transformer substation control system, a fire control system sampling point and a fire control system, wherein the output end of the direct-current uninterrupted power supply is connected with the input end of the fire detector, the output end of the fire detector is respectively connected with the protocol converter and the fire control system sampling point, the protocol converter is sequentially connected with the transformer substation auxiliary control system and the transformer substation control system, and the fire control system sampling point is connected with the fire control system; the fire disaster detector is connected with a sampling tube, and the sampling tube samples air of the cable trench; through transmitting the signal transmission of the output end of the fire detector to the transformer substation auxiliary control system, the transformer substation control system and the fire control system sampling points, fire early warning and monitoring can be performed more efficiently and timely, and safety is guaranteed.
Preferably, the fire detector is installed in a cable duct or a cable tunnel, and the sampling pipes are arranged on both sides of the cable duct or on the top of the cable tunnel.
Preferably, the fire detector is connected with the protocol converter, and the protocol converter is connected with the substation auxiliary control system through RS485 communication, and the substation auxiliary control system is connected with the substation control system through IEC61850 communication; the fire detector is in communication connection with the fire control system sampling point and the fire control system through the dry connection point.
The invention also provides a cable duct fire early warning method, which comprises the following steps:
step one: the sampling tube sends air of the target monitoring area to the fire detector for analysis, and whether fire hidden danger exists in the target monitoring area is judged;
step two: the fire detector takes real-time data, fire early warning signals and equipment fault signals sent by the sampling tube as data sets, and respectively transmits the data sets to an auxiliary control system and a fire control system sampling point for monitoring and storage through a communication line;
step three: the auxiliary control system transmits the stored real-time data, fire early warning signals and equipment fault signals to a substation control system or a substation monitoring center duty room; the fire control system sampling point transmits the stored real-time data, fire early warning signals and equipment fault signals to the fire control system so that the fire control system can control fire equipment.
Preferably, the fire detector is connected with the power supply module, the power supply module is a direct-current uninterruptible power supply, the direct-current uninterruptible power supply is provided with an alternating-current power failure detection device, and the alternating-current power failure detection device is used for sending an alternating-current fault alarm signal and/or a power failure signal by the direct-current uninterruptible power supply when alternating-current power fails and transmitting the signals to a substation control system and/or a substation monitoring center duty room through a communication port of the fire detector.
Preferably, the control of the fire-fighting equipment comprises the starting of the alarm equipment and the starting of the spraying equipment.
Preferably, the sampling tube comprises an inner layer sampling tube and a sleeve, wherein,
the tube wall of the inner layer sampling tube is provided with a first air hole;
the sleeve is sleeved outside the inner sampling tube, and a second air hole is arranged on the side wall of the sleeve which is not higher than the central shaft.
Preferably, the highest point of the second air hole is lower than the central axis of the sleeve.
Preferably, a first air hole is formed in the side wall of the inner layer sampling tube, which is positioned below the inner layer sampling tube;
the side walls of the sleeve, which are positioned below and/or at the left side and the right side, are provided with second air holes;
the aperture of the second air hole is larger than that of the first air hole.
Preferably, a plurality of partitions are arranged between the inner wall of the sleeve and the outer wall of the inner sampling tube, the space between the sleeve and the inner sampling tube is divided into a plurality of mutually independent parts, and the included angle between the normal line of each partition and the central axis of the sleeve is one of an acute angle, an obtuse angle or a right angle;
the pipe wall of the inner layer sampling pipe between two adjacent partitions is provided with a first air hole.
Preferably, the central axis of the inner sampling tube is parallel to the central axis of the sleeve, and the central axis of the inner sampling tube is higher than the central axis of the sleeve.
The invention also provides a cable duct fire early warning device, which comprises:
the analysis module is used for sending the air of the target monitoring area to the fire detector for analysis by the sampling tube and judging whether the fire hidden danger exists in the target monitoring area;
the monitoring and storage module is used for taking real-time data, fire early warning signals and equipment fault signals sent by the sampling tube as data sets by the fire detector, and respectively transmitting the data sets to the auxiliary control system and the fire control system sampling points through the communication line for monitoring and storage;
the data transmission module is used for transmitting the stored real-time data, fire early warning signals and equipment fault signals to a substation control system or a substation monitoring center duty room by the auxiliary control system; the fire control system sampling point transmits the stored real-time data, fire early warning signals and equipment fault signals to the fire control system so that the fire control system can control fire equipment.
Preferably, the fire disaster detector is connected with the power supply module, the power supply module is a direct-current uninterrupted power supply, the direct-current uninterrupted power supply is provided with an alternating-current power failure detection device, and the alternating-current power failure detection device is used for sending an alternating-current fault alarm signal and/or a power failure signal by the direct-current uninterrupted power supply when alternating-current power fails and transmitting the signals to a substation control system and/or a substation monitoring center duty room through a communication port of the fire disaster detector.
Preferably, the data transmission module is further used for starting an alarm device and a spraying device.
Preferably, the sampling tube comprises an inner layer sampling tube and a sleeve, wherein,
the tube wall of the inner layer sampling tube is provided with a first air hole;
the sleeve is sleeved outside the inner sampling tube, and a second air hole is arranged on the side wall of the sleeve which is not higher than the central shaft.
Preferably, the highest point of the second air hole is lower than the central axis of the sleeve.
Preferably, a first air hole is formed in the side wall of the inner layer sampling tube, which is positioned below the inner layer sampling tube;
the side walls of the sleeve, which are positioned below and/or at the left side and the right side, are provided with second air holes;
the aperture of the second air hole is larger than that of the first air hole.
Preferably, a plurality of partitions are arranged between the inner wall of the sleeve and the outer wall of the inner sampling tube, the space between the sleeve and the inner sampling tube is divided into a plurality of mutually independent parts, and the included angle between the normal line of each partition and the central axis of the sleeve is one of an acute angle, an obtuse angle or a right angle;
the pipe wall of the inner layer sampling pipe between two adjacent partitions is provided with a first air hole.
Preferably, the central axis of the inner sampling tube is parallel to the central axis of the sleeve, and the central axis of the inner sampling tube is higher than the central axis of the sleeve.
Compared with the prior art, the invention has the following advantages:
(1) According to the inner-layer sampling tube, the sleeve is arranged, so that the inner-layer sampling tube is effectively protected, even if rainwater exists, the rainwater can enter the sleeve first and cannot directly enter the sampling tube, therefore, the rainwater can be prevented from entering the inner-layer sampling tube, the sampling tube is prevented from being blocked, the sampling tube is further facilitated to smoothly convey the detected gas to the fire detector, and the acquired information is ensured to be accurate enough.
(2) Through the independent design to the sampling pipe, the sleeve pipe all has first gas pocket about and the below, guarantees that the first gas pocket of three direction is bigger than the first gas pocket of inlayer, and when guaranteeing that rainwater blocks up a first gas pocket, inlayer first gas pocket still has normal air current, and the first gas pocket of below is in the sampling pipe after intaking, can discharge the sleeve pipe as early as possible with water, and the interval setting that the sampling pipe was predetermine cuts off, prevents the air between the first gas pocket to flow in the outer tube.
(3) According to the cable trench fire early-warning system provided by the invention, the detector transmits real-time data, fire early-warning signals and equipment fault signals to the auxiliary control system and the fire control system sampling points for monitoring and storage through communication, and the data are simultaneously transmitted to the transformer substation control system and the local fire control system, so that the reliability of fire early-warning signal transmission in the cable trench is ensured, and the safety is ensured.
(4) And after the alternating current power failure, the generated alternating current fault alarm signal or power failure signal is transmitted to a transformer substation control system through a communication link of the fire detector, so that a worker can know the power state of the detector in time, and the power is updated in time when the power of the fire detector works abnormally, and the reliable operation of the fire alarm device is ensured.
Drawings
FIG. 1 is a schematic structural view of a sampling tube according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a sampling tube according to an embodiment of the present invention;
FIG. 3 is another cross-sectional view of a sampling tube provided in accordance with an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a cable pit fire detection device according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a fire early warning system for a cable duct according to an embodiment of the present invention;
fig. 6 is a schematic flow chart of a cable duct fire early warning method according to an embodiment of the present invention.
Detailed Description
The following describes in detail the examples of the present invention, which are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of protection of the present invention is not limited to the following examples.
Example 1
FIG. 1 is a schematic structural view of a sampling tube according to an embodiment of the present invention; FIG. 2 is a cross-sectional view of a sampling tube according to an embodiment of the present invention; as shown in fig. 1 and 2, a sampling tube comprising an inner layer sampling tube 1 and a sleeve 2, wherein,
the tube wall of the inner layer sampling tube 1 is provided with a first air hole 101; specifically, a first air hole 101 is formed in the side wall of the inner layer sampling tube 1 located below; the first air hole 101 is arranged by sleeving a functional sleeve 2 for completing air sampling outside the inner sampling tube 1, and a second air hole 201 is arranged on the side wall of the sleeve 2 which is not higher than the central shaft.
Illustratively, a sampling tube laid in a raceway with the axial direction horizontal is illustrated, and when there is rain water falling, the rain water will first fall onto the sleeve and flow down the outside wall of the sleeve. After the stormwater has passed beyond the largest diameter of the sleeve in the horizontal plane, it will drip downwards, even if part of the stormwater does not drip and moves along the outer side wall of the sleeve towards the side wall of the sleeve below the largest diameter in the horizontal plane. Since the area of the second air holes 201 occupies only a small surface area of the surface of the sleeve 2, only a small amount of rainwater is caused to flow into the sleeve 2. Since the inner sampling tube 1 is located inside the sleeve 2, rainwater will only flow down the inner wall of the sleeve 2 and will not flow into the inner sampling tube.
It should be emphasized that the outer diameter of the inner sampling tube 1 is smaller than the inner diameter of the sleeve 2. In order to avoid rainwater in the sleeve 2 from flowing into the inner sampling tube 1, the outer wall of the inner sampling tube 1 is not in direct contact with the inner wall of the sleeve 2.
The sampling tube in the prior art is exposed in the environment, and under the condition of rainwater, the rainwater can directly enter the sampling tube, and compared with the prior art, the embodiment of the invention greatly reduces the quantity of the rainwater entering the sampling tube. Therefore, by arranging the sleeve 2, the inner-layer sampling tube 1 is effectively protected, and even if rainwater exists, the rainwater can enter the sleeve 2 first and cannot directly enter the sampling tube, so that the rainwater can be prevented from entering the inner-layer sampling tube 1, the sampling tube is prevented from being blocked, the detected gas can be smoothly conveyed into the fire detector by the sampling tube, and the accuracy of detection data is ensured.
In order to further improve the rainproof effect of the sleeve, the highest point of the second air hole 201 is lower than the central axis of the sleeve 2.
Since the top edge of the second air hole 201 is lower than the height of the central axis of the sleeve 2, that is, the projection of the second air hole 201 on the horizontal plane is located in the horizontal projection range of the portion of the sleeve 2 higher than the axis of the sleeve, the top of the second air hole 201 is covered with a rain-proof cover. When rainwater falls down, rainwater does not drop into the second air hole 201 due to shielding of the side wall of the sleeve 2 higher than the axis of the sleeve.
Since the highest point of the second air holes 201 is lower than the central axis of the sleeve 2, rainwater does not directly enter the interior of the sleeve 2 through the second air holes 201, or only a small amount of rainwater enters the interior of the sleeve 2 through the second air holes 201.
Specifically, a first air hole 101 is formed in the side wall of the inner layer sampling tube 1 located below; the lower part refers to the side wall lower than the highest point of the inner sampling tube 1 or the side wall lower than the central axis of the inner sampling tube 1.
It should be noted that, in the embodiment of the present invention, only one row of air holes for gas sampling is provided in the existing sampling tube, the first air holes 101 may be provided on the top, the left and right side walls, and the bottom side walls of the sampling tube, and when soil or foreign matters block one or more of the first air holes 101, air convection may still be formed between the unblocked first air holes 101, so as to ensure that air sampling is performed in real time, and no air sample cannot be collected in a certain section of the sampling tube due to blockage of a certain sampling hole, thereby avoiding fire disaster warning information.
In order to further improve the rainproof effect of the sleeve, on the basis of the above technical scheme, the side walls of the sleeve 2, which are positioned below and/or on the left and right sides, are provided with second air holes 201; the second air holes 201 positioned below are used for discharging water out of the sleeve 2 as soon as possible after water is fed into the sampling tube, and the second air holes 201 on the left side and the right side are used for completing air sampling by matching with the first sampling holes. Air enters the space between the sleeve 2 and the inner sampling tube 1 from the second sampling hole 201, passes through the first sampling hole 101 on the inner sampling tube 1 and enters the inner sampling tube 1, and is transmitted along the trend of the inner sampling tube in the inner sampling tube 1, so that an air sample is transmitted to a fire detector, and the fire detector timely receives the information of the gas sample.
Example 2
In order to ensure that the inner sampling tube 1 also has a normal air flow when rainwater or soil blocks part of the second air holes 201, the aperture of the second air holes 201 is larger than that of the first air holes 101 on the basis of embodiment 1 of the present invention. The design that the aperture of second air hole 201 is greater than the aperture of first air hole 101 guarantees that when rainwater or earth blocks part of second air hole 201, because the aperture of second aperture 201 is greater than first air hole 101, the flow of air through second air hole 201 is greater than the flow of air through first air hole 101, produce certain pressure differential, promote gas to flow into in the inlayer sampling pipe 1 soon from sleeve pipe 2, even if part of second air hole 201 blocks up, also can reduce the flow of a part of second air hole 201, the influence that second air hole 201 received is less, the influence of total pressure differential is less, gas still can flow into inlayer sampling pipe 1 from sleeve pipe 2, inlayer sampling pipe 1 still has normal air current, sleeve pipe 2 covers outside inlayer sampling pipe 1 in addition, can avoid the jam of first air hole 101 on the sampling pipe wall.
Further, in order to ensure air circulation, the central axis of the inner sampling tube 1 is parallel to the central axis of the sleeve 2, and the central axis of the inner sampling tube 1 is higher than the central axis of the sleeve 2. The inner sampling tube 1 is guaranteed to be at a certain height from the ground, the certain height is not particularly limited, the inner sampling tube 1 can be adjusted according to the actual condition of the site as required, the general height is larger than the local average maximum ponding depth, rainwater and soil are prevented from entering the inner sampling tube 1, even if the rainwater overflows out of the sleeve 2 by a certain height, the ponding can only flow out from the pipeline of the sleeve 2 due to the fact that the height of the inner sampling tube 1 from the ground is larger than the local average maximum ponding depth, the inner sampling tube 1 cannot be overflowed, the sampling of the inner sampling tube 1 is not influenced, and the ventilation is guaranteed.
Example 3
Fig. 3 is another cross-sectional view of a sampling tube, as shown in fig. 3, in which embodiment 2 of the present invention differs from embodiment 1 of the present invention only in that a plurality of partitions 3 are provided between the inner wall of the sleeve 2 and the outer wall of the inner sampling tube 1, the space between the sleeve 2 and the inner sampling tube 1 is divided into a plurality of mutually independent parts, and the normal line of the partitions 3 and the central axis of the sleeve 2 form one of an acute angle, an obtuse angle or a right angle; the relative inclination angle of the partition 3 and the central axis does not affect the sampling of the sampling tube to air, so the included angle between the normal line of the partition 3 and the central axis of the sleeve 2 is not particularly limited, and the partition can be achieved, so long as the partition is within the protection scope of the invention.
Specifically, a first air hole 101 is formed in the pipe wall of the inner layer sampling pipe 1 between two adjacent partitions 3, and a second air hole 201 is formed in the pipe wall of the sleeve 2 between two adjacent partitions 3.
The purpose of setting up cuts off 3 is connected inlayer sampling pipe 1 and sleeve pipe 2 on the one hand, guarantees stability, and secondly at the in-process of air sampling, guarantees that air gets into inlayer sampling pipe 1 from the second gas pocket 201 on sleeve pipe 2 directly through the first gas pocket 101 on inlayer sampling pipe 1 and accomplishes the sampling, avoids the accuracy and the instantaneity of sampling data that the air flows in sleeve pipe 2 influence the sampling result.
Example 4
Fig. 4 is a schematic structural view of a cable pit fire detection device, as shown in fig. 4, including the sampling tube of embodiments 1-3, and further including a fire detector connected to the sampling tube.
The fire detector is connected with the sampling tube, the sampling tube conveys air of the target monitoring area to the detector through the sampling tube, and the detector analyzes the air sample to judge whether fire hidden danger exists in the target area.
Example 5
Fig. 5 is a schematic structural diagram of a cable pit fire early warning system, as shown in fig. 5, where the cable pit fire early warning system includes the sampling tube and/or the fire detector described in embodiments 1-4, and further includes a dc uninterruptible power supply, a protocol converter, a substation auxiliary control system, a substation control system, a fire control system sampling point, and a fire control system, where the dc uninterruptible power supply is 24V, an output end of the dc uninterruptible power supply is connected with an input end of the fire detector, an output end of the fire detector is connected with the protocol converter and the fire control system sampling point, the protocol converter is sequentially connected with the substation auxiliary control system and the substation control system, and the fire control system sampling point is connected with the fire control system; the fire disaster detector is connected with a sampling tube, and the sampling tube samples air of the cable trench; through transmitting the signal transmission of the output end of the fire detector to the transformer substation auxiliary control system, the transformer substation control system and the fire control system sampling points, fire early warning and monitoring can be performed more efficiently and timely, and safety is guaranteed.
The detector transmits real-time data, fire early warning signals and equipment fault signals to the auxiliary control system and the fire control system sampling points to the background computer for monitoring and storage, the data are simultaneously transmitted to the transformer substation control system and the local fire control system, and workers of the transformer substation and the local fire control center check the data information of the sampling points on the background computer in real time to judge whether potential safety hazards exist or not, and if the potential safety hazards exist, measures are timely taken to eliminate the potential hazards; the direct-current uninterrupted power supply provides energy for the whole early warning system, and the early warning system guarantees the reliability of fire early warning signal transmission in the cable pit and guarantees safety.
Example 6
Embodiment 6 of the present invention differs from embodiment 5 of the present invention only in that the fire detector is installed in a cable trench or a cable tunnel, and the sampling pipes are arranged at both sides of the cable trench or at the top of the cable tunnel.
In order to ensure the accuracy of communication and the mutual noninterference of communication, the fire detector is connected with the protocol converter, the protocol converter is connected with the substation auxiliary control system through RS485 communication, and the substation auxiliary control system is connected with the substation control system through IEC61850 communication; the fire detector is in communication connection with the fire control system sampling point and the fire control system through the dry connection point.
The cable pit fire early warning system comprises a power supply scheme and a communication scheme, wherein the power supply scheme mainly refers to that a power supply cable in a cable pit is longer, the power supply reliability is lower, power failure accidents possibly occur, a 24V direct current uninterrupted power supply is configured at the fire detector for ensuring the working reliability of the fire detector in the cable pit, the standby power time is longer than 12 hours, meanwhile, an alternating current power failure detection is configured at the 24V direct current uninterrupted power supply, and after the alternating current power failure, an alternating current fault warning signal or a power failure signal is generated by the 24V direct current uninterrupted power supply and is transmitted to a transformer substation control system through a communication link of the fire detector. The communication scheme is that the fire detector is divided into 1-path RS485 or optical fiber communication port and 1-path main access point communication port, the fire detector in the cable trench adopts RS485 or optical fiber to transmit real-time data to an auxiliary control system of the transformer substation, and the data is transmitted to a transformer substation control system or a transformer substation monitoring center duty room through the auxiliary control system. The 1-way dry-connect signal is connected to a local fire control system. When a fire signal occurs, the fire detector transmits data to the substation control center and the local fire control system at the same time. The reliability of fire early warning signal transmission in the cable trench is guaranteed.
The fire early warning system in the prior art can not transmit alarm signals to a transformer substation in real time, can not transmit alarm signals to a fire protection system directly, and even a plurality of areas are not provided with fire alarm equipment, so that the risk of fire in a cable pit or a cable tunnel is high, and when the fire occurs, serious loss can be caused for each fire. The technical problem can be well solved by applying the embodiment of the invention.
Example 7
Fig. 6 is a schematic flow chart of a cable pit fire early warning method, as shown in fig. 6, and the method includes:
step S1: the sampling tube sends air of the target monitoring area to the fire detector for analysis, and whether fire hidden danger exists in the target monitoring area is judged;
step S2: the fire detector takes real-time data, fire early warning signals and equipment fault signals sent by the sampling tube as data sets, and the data sets are respectively transmitted to an auxiliary control system and a fire control system sampling point for monitoring and storage through a communication line.
The fire detector obtains real-time air sample data acquired by the sampling tube according to the air conveyed by the sampling tube, if the air sample data contains fire hidden danger data, the data generate fire early warning signals in the fire detector, if the position of the data can be determined, the fire detector generates equipment fault signals according to the data, all the signals form a data set, and the data set is respectively transmitted to an auxiliary control system and a fire control system sampling point for monitoring and storage through a communication line.
Step S3: the auxiliary control system transmits the stored real-time data, fire early warning signals and equipment fault signals to a substation control system or a substation monitoring center duty room; the fire control system sampling point transmits the stored real-time data, fire early warning signals and equipment fault signals to the fire control system so that the fire control system can control fire equipment.
Specifically, the fire detector is connected with the power supply module, the power supply module is a direct-current uninterrupted power supply, the direct-current uninterrupted power supply is provided with an alternating-current power failure detection device, and the alternating-current power failure detection device is used for sending an alternating-current fault alarm signal and/or a power failure signal by the direct-current uninterrupted power supply when alternating-current power fails and transmitting the signals to a substation control system and/or a substation monitoring center duty room through a communication port of the fire detector.
Specifically, the control of the fire-fighting equipment comprises the steps of starting the alarm equipment and starting the spraying equipment.
It should be noted that the sampling tube used in this embodiment may be the sampling tube disclosed in embodiment 1 to embodiment 3, or may be any other type of sampling tube capable of implementing the solution of this embodiment.
FIG. 1 is a schematic structural view of a sampling tube according to an embodiment of the present invention; FIG. 2 is a cross-sectional view of a sampling tube according to an embodiment of the present invention; as shown in fig. 1 and 2, a sampling tube comprising an inner layer sampling tube 1 and a sleeve 2, wherein,
the tube wall of the inner layer sampling tube 1 is provided with a first air hole 101; specifically, a first air hole 101 is formed in the side wall of the inner layer sampling tube 1 located below; the first air hole 101 is arranged by sleeving a functional sleeve 2 for completing air sampling outside the inner sampling tube 1, and a second air hole 201 is arranged on the side wall of the sleeve 2 which is not higher than the central shaft.
Illustratively, a sampling tube laid in a raceway with the axial direction horizontal is illustrated, and when there is rain water falling, the rain water will first fall onto the sleeve and flow down the outside wall of the sleeve. After the stormwater has passed beyond the largest diameter of the sleeve in the horizontal plane, it will drip downwards, even if part of the stormwater does not drip and moves along the outer side wall of the sleeve towards the side wall of the sleeve below the largest diameter in the horizontal plane. Since the area of the second air holes 201 occupies only a small surface area of the surface of the sleeve 2, only a small amount of rainwater is caused to flow into the sleeve 2. Since the inner sampling tube 1 is located inside the sleeve 2, rainwater will only flow down the inner wall of the sleeve 2 and will not flow into the inner sampling tube.
It should be emphasized that the outer diameter of the inner sampling tube 1 is smaller than the inner diameter of the sleeve 2. In order to avoid rainwater in the sleeve 2 from flowing into the inner sampling tube 1, the outer wall of the inner sampling tube 1 is not in direct contact with the inner wall of the sleeve 2.
The sampling tube in the prior art is exposed in the environment, and under the condition of rainwater, the rainwater can directly enter the sampling tube, and compared with the prior art, the embodiment of the invention greatly reduces the quantity of the rainwater entering the sampling tube. Therefore, by arranging the sleeve 2, the inner-layer sampling tube 1 is effectively protected, and even if rainwater exists, the rainwater can enter the sleeve 2 first and cannot directly enter the sampling tube, so that the rainwater can be prevented from entering the inner-layer sampling tube 1, the sampling tube is prevented from being blocked, the detected gas can be smoothly conveyed into the fire detector by the sampling tube, and the accuracy of detection data is ensured.
In order to further improve the rainproof effect of the sleeve, the highest point of the second air hole 201 is lower than the central axis of the sleeve 2.
Since the top edge of the second air hole 201 is lower than the height of the central axis of the sleeve 2, that is, the projection of the second air hole 201 on the horizontal plane is located in the horizontal projection range of the portion of the sleeve 2 higher than the axis of the sleeve, the top of the second air hole 201 is covered with a rain-proof cover. When rainwater falls down, rainwater does not drop into the second air hole 201 due to shielding of the side wall of the sleeve 2 higher than the axis of the sleeve.
Since the highest point of the second air holes 201 is lower than the central axis of the sleeve 2, rainwater does not directly enter the interior of the sleeve 2 through the second air holes 201, or only a small amount of rainwater enters the interior of the sleeve 2 through the second air holes 201.
Specifically, a first air hole 101 is formed in the side wall of the inner layer sampling tube 1 located below; the lower part refers to the side wall lower than the highest point of the inner sampling tube 1 or the side wall lower than the central axis of the inner sampling tube 1.
It should be noted that, in the embodiment of the present invention, only one row of air holes for gas sampling is provided in the existing sampling tube, the first air holes 101 may be provided on the top, the left and right side walls, and the bottom side walls of the sampling tube, and when soil or foreign matters block one or more of the first air holes 101, air convection may still be formed between the unblocked first air holes 101, so as to ensure that air sampling is performed in real time, and no air sample cannot be collected in a certain section of the sampling tube due to blockage of a certain sampling hole, thereby avoiding fire disaster warning information.
In order to further improve the rainproof effect of the sleeve, on the basis of the above technical scheme, the side walls of the sleeve 2, which are positioned below and/or on the left and right sides, are provided with second air holes 201; the second air holes 201 positioned below are used for discharging water out of the sleeve 2 as soon as possible after water is fed into the sampling tube, and the second air holes 201 on the left side and the right side are used for completing air sampling by matching with the first sampling holes. Air enters the space between the sleeve 2 and the inner sampling tube 1 from the second sampling hole 201, passes through the first sampling hole 101 on the inner sampling tube 1 and enters the inner sampling tube 1, and is transmitted along the trend of the inner sampling tube in the inner sampling tube 1, so that an air sample is transmitted to a fire detector, and the fire detector timely receives the information of the gas sample.
In order to ensure that the inner sampling tube 1 also has a normal air flow when rainwater or soil blocks part of the second air holes 201, the aperture of the second air holes 201 is larger than that of the first air holes 101 on the basis of embodiment 1 of the present invention. The design that the aperture of second air hole 201 is greater than the aperture of first air hole 101 guarantees that when rainwater or earth blocks part of second air hole 201, because the aperture of second aperture 201 is greater than first air hole 101, the flow of air through second air hole 201 is greater than the flow of air through first air hole 101, produce certain pressure differential, promote gas to flow into in the inlayer sampling pipe 1 soon from sleeve pipe 2, even if part of second air hole 201 blocks up, also can reduce the flow of a part of second air hole 201, the influence that second air hole 201 received is less, the influence of total pressure differential is less, gas still can flow into inlayer sampling pipe 1 from sleeve pipe 2, inlayer sampling pipe 1 still has normal air current, sleeve pipe 2 covers outside inlayer sampling pipe 1 in addition, can avoid the jam of first air hole 101 on the sampling pipe wall.
Further, in order to ensure air circulation, the central axis of the inner sampling tube 1 is parallel to the central axis of the sleeve 2, and the central axis of the inner sampling tube 1 is higher than the central axis of the sleeve 2. The inner sampling tube 1 is guaranteed to be at a certain height from the ground, the certain height is not particularly limited, the inner sampling tube 1 can be adjusted according to the actual condition of the site as required, the general height is larger than the local average maximum ponding depth, rainwater and soil are prevented from entering the inner sampling tube 1, even if the rainwater overflows out of the sleeve 2 by a certain height, the ponding can only flow out from the pipeline of the sleeve 2 due to the fact that the height of the inner sampling tube 1 from the ground is larger than the local average maximum ponding depth, the inner sampling tube 1 cannot be overflowed, the sampling of the inner sampling tube 1 is not influenced, and the ventilation is guaranteed.
Fig. 3 is another cross-sectional view of a sampling tube, as shown in fig. 3, in which embodiment 2 of the present invention differs from embodiment 1 of the present invention only in that a plurality of partitions 3 are provided between the inner wall of the sleeve 2 and the outer wall of the inner sampling tube 1, the space between the sleeve 2 and the inner sampling tube 1 is divided into a plurality of mutually independent parts, and the normal line of the partitions 3 and the central axis of the sleeve 2 form one of an acute angle, an obtuse angle or a right angle; the relative inclination angle of the partition 3 and the central axis does not affect the sampling of the sampling tube to air, so the included angle between the normal line of the partition 3 and the central axis of the sleeve 2 is not particularly limited, and the partition can be achieved, so long as the partition is within the protection scope of the invention.
Specifically, a first air hole 101 is formed in the pipe wall of the inner layer sampling pipe 1 between two adjacent partitions 3, and a second air hole 201 is formed in the pipe wall of the sleeve 2 between two adjacent partitions 3.
The purpose of setting up cuts off 3 is connected inlayer sampling pipe 1 and sleeve pipe 2 on the one hand, guarantees stability, and secondly at the in-process of air sampling, guarantees that air gets into inlayer sampling pipe 1 from the second gas pocket 201 on sleeve pipe 2 directly through the first gas pocket 101 on inlayer sampling pipe 1 and accomplishes the sampling, avoids the accuracy and the instantaneity of sampling data that the air flows in sleeve pipe 2 influence the sampling result.
Example 8
A raceway fire early warning device comprising:
the analysis module is used for sending the air of the target monitoring area to the fire detector for analysis by the sampling tube and judging whether the fire hidden danger exists in the target monitoring area;
the monitoring and storage module is used for taking real-time data, fire early warning signals and equipment fault signals sent by the sampling tube as data sets by the fire detector, and respectively transmitting the data sets to the auxiliary control system and the fire control system sampling points through the communication line for monitoring and storage;
the data transmission module is used for transmitting the stored real-time data, fire early warning signals and equipment fault signals to a substation control system or a substation monitoring center duty room by the auxiliary control system; the fire control system sampling point transmits the stored real-time data, fire early warning signals and equipment fault signals to the fire control system so that the fire control system can control fire equipment.
Specifically, the early warning device further comprises a power supply module, the fire detector is connected with the power supply module, the power supply module is a direct-current uninterrupted power source, the direct-current uninterrupted power source is provided with an alternating-current power failure detection device, and the alternating-current power failure detection device is used for sending an alternating-current fault warning signal and/or a power failure signal by the direct-current uninterrupted power source when alternating-current power fails and transmitting the signals to a substation control system and/or a substation monitoring center duty room through a communication port of the fire detector.
Specifically, the data transmission module is also used for starting the alarm equipment and the spraying equipment.
It should be noted that the sampling tube used in this embodiment may be the sampling tube disclosed in embodiment 1 to embodiment 3, or may be any other type of sampling tube capable of implementing the solution of this embodiment.
FIG. 1 is a schematic structural view of a sampling tube according to an embodiment of the present invention; FIG. 2 is a cross-sectional view of a sampling tube according to an embodiment of the present invention; as shown in fig. 1 and 2, a sampling tube comprising an inner layer sampling tube 1 and a sleeve 2, wherein,
the tube wall of the inner layer sampling tube 1 is provided with a first air hole 101; specifically, a first air hole 101 is formed in the side wall of the inner layer sampling tube 1 located below; the first air hole 101 is arranged by sleeving a functional sleeve 2 for completing air sampling outside the inner sampling tube 1, and a second air hole 201 is arranged on the side wall of the sleeve 2 which is not higher than the central shaft.
Illustratively, a sampling tube laid in a raceway with the axial direction horizontal is illustrated, and when there is rain water falling, the rain water will first fall onto the sleeve and flow down the outside wall of the sleeve. After the stormwater has passed beyond the largest diameter of the sleeve in the horizontal plane, it will drip downwards, even if part of the stormwater does not drip and moves along the outer side wall of the sleeve towards the side wall of the sleeve below the largest diameter in the horizontal plane. Since the area of the second air holes 201 occupies only a small surface area of the surface of the sleeve 2, only a small amount of rainwater is caused to flow into the sleeve 2. Since the inner sampling tube 1 is located inside the sleeve 2, rainwater will only flow down the inner wall of the sleeve 2 and will not flow into the inner sampling tube.
It should be emphasized that the outer diameter of the inner sampling tube 1 is smaller than the inner diameter of the sleeve 2. In order to avoid rainwater in the sleeve 2 from flowing into the inner sampling tube 1, the outer wall of the inner sampling tube 1 is not in direct contact with the inner wall of the sleeve 2.
The sampling tube in the prior art is exposed in the environment, and under the condition of rainwater, the rainwater can directly enter the sampling tube, and compared with the prior art, the embodiment of the invention greatly reduces the quantity of the rainwater entering the sampling tube. Therefore, by arranging the sleeve 2, the inner-layer sampling tube 1 is effectively protected, and even if rainwater exists, the rainwater can enter the sleeve 2 first and cannot directly enter the sampling tube, so that the rainwater can be prevented from entering the inner-layer sampling tube 1, the sampling tube is prevented from being blocked, the detected gas can be smoothly conveyed into the fire detector by the sampling tube, and the accuracy of detection data is ensured.
In order to further improve the rainproof effect of the sleeve, the highest point of the second air hole 201 is lower than the central axis of the sleeve 2.
Since the top edge of the second air hole 201 is lower than the height of the central axis of the sleeve 2, that is, the projection of the second air hole 201 on the horizontal plane is located in the horizontal projection range of the portion of the sleeve 2 higher than the axis of the sleeve, the top of the second air hole 201 is covered with a rain-proof cover. When rainwater falls down, rainwater does not drop into the second air hole 201 due to shielding of the side wall of the sleeve 2 higher than the axis of the sleeve.
Since the highest point of the second air holes 201 is lower than the central axis of the sleeve 2, rainwater does not directly enter the interior of the sleeve 2 through the second air holes 201, or only a small amount of rainwater enters the interior of the sleeve 2 through the second air holes 201.
Specifically, a first air hole 101 is formed in the side wall of the inner layer sampling tube 1 located below; the lower part refers to the side wall lower than the highest point of the inner sampling tube 1 or the side wall lower than the central axis of the inner sampling tube 1.
It should be noted that, in the embodiment of the present invention, only one row of air holes for gas sampling is provided in the existing sampling tube, the first air holes 101 may be provided on the top, the left and right side walls, and the bottom side walls of the sampling tube, and when soil or foreign matters block one or more of the first air holes 101, air convection may still be formed between the unblocked first air holes 101, so as to ensure that air sampling is performed in real time, and no air sample cannot be collected in a certain section of the sampling tube due to blockage of a certain sampling hole, thereby avoiding fire disaster warning information.
In order to further improve the rainproof effect of the sleeve, on the basis of the above technical scheme, the side walls of the sleeve 2, which are positioned below and/or on the left and right sides, are provided with second air holes 201; the second air holes 201 positioned below are used for discharging water out of the sleeve 2 as soon as possible after water is fed into the sampling tube, and the second air holes 201 on the left side and the right side are used for completing air sampling by matching with the first sampling holes. Air enters the space between the sleeve 2 and the inner sampling tube 1 from the second sampling hole 201, passes through the first sampling hole 101 on the inner sampling tube 1 and enters the inner sampling tube 1, and is transmitted along the trend of the inner sampling tube in the inner sampling tube 1, so that an air sample is transmitted to a fire detector, and the fire detector timely receives the information of the gas sample.
In order to ensure that the inner sampling tube 1 also has a normal air flow when rainwater or soil blocks part of the second air holes 201, the aperture of the second air holes 201 is larger than that of the first air holes 101 on the basis of embodiment 1 of the present invention. The design that the aperture of second air hole 201 is greater than the aperture of first air hole 101 guarantees that when rainwater or earth blocks part of second air hole 201, because the aperture of second aperture 201 is greater than first air hole 101, the flow of air through second air hole 201 is greater than the flow of air through first air hole 101, produce certain pressure differential, promote gas to flow into in the inlayer sampling pipe 1 soon from sleeve pipe 2, even if part of second air hole 201 blocks up, also can reduce the flow of a part of second air hole 201, the influence that second air hole 201 received is less, the influence of total pressure differential is less, gas still can flow into inlayer sampling pipe 1 from sleeve pipe 2, inlayer sampling pipe 1 still has normal air current, sleeve pipe 2 covers outside inlayer sampling pipe 1 in addition, can avoid the jam of first air hole 101 on the sampling pipe wall.
Further, in order to ensure air circulation, the central axis of the inner sampling tube 1 is parallel to the central axis of the sleeve 2, and the central axis of the inner sampling tube 1 is higher than the central axis of the sleeve 2. The inner sampling tube 1 is guaranteed to be at a certain height from the ground, the certain height is not particularly limited, the inner sampling tube 1 can be adjusted according to the actual condition of the site as required, the general height is larger than the local average maximum ponding depth, rainwater and soil are prevented from entering the inner sampling tube 1, even if the rainwater overflows out of the sleeve 2 by a certain height, the ponding can only flow out from the pipeline of the sleeve 2 due to the fact that the height of the inner sampling tube 1 from the ground is larger than the local average maximum ponding depth, the inner sampling tube 1 cannot be overflowed, the sampling of the inner sampling tube 1 is not influenced, and the ventilation is guaranteed.
Fig. 3 is another cross-sectional view of a sampling tube, as shown in fig. 3, in which embodiment 2 of the present invention differs from embodiment 1 of the present invention only in that a plurality of partitions 3 are provided between the inner wall of the sleeve 2 and the outer wall of the inner sampling tube 1, the space between the sleeve 2 and the inner sampling tube 1 is divided into a plurality of mutually independent parts, and the normal line of the partitions 3 and the central axis of the sleeve 2 form one of an acute angle, an obtuse angle or a right angle; the relative inclination angle of the partition 3 and the central axis does not affect the sampling of the sampling tube to air, so the included angle between the normal line of the partition 3 and the central axis of the sleeve 2 is not particularly limited, and the partition can be achieved, so long as the partition is within the protection scope of the invention.
Specifically, a first air hole 101 is formed in the pipe wall of the inner layer sampling pipe 1 between two adjacent partitions 3, and a second air hole 201 is formed in the pipe wall of the sleeve 2 between two adjacent partitions 3.
The purpose of setting up cuts off 3 is connected inlayer sampling pipe 1 and sleeve pipe 2 on the one hand, guarantees stability, and secondly at the in-process of air sampling, guarantees that air gets into inlayer sampling pipe 1 from the second gas pocket 201 on sleeve pipe 2 directly through the first gas pocket 101 on inlayer sampling pipe 1 and accomplishes the sampling, avoids the accuracy and the instantaneity of sampling data that the air flows in sleeve pipe 2 influence the sampling result.
Through the technical scheme, the sampling tube, the fire detection equipment, the early warning system, the early warning method and the early warning device provided by the invention have the advantages of simple structure, safety and high efficiency. Real-time data, fire early-warning signals and equipment fault signals sent by the sampling pipes are transmitted to an auxiliary control system and a fire control system sampling point for monitoring and storage through communication, the data are simultaneously transmitted to a transformer substation control system and a local fire control system, the reliability of fire early-warning signal transmission in a cable trench is guaranteed, and safety is guaranteed.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (11)
1. The sampling tube is characterized by comprising an inner layer sampling tube and a sleeve, wherein a first air hole is formed in the wall of the inner layer sampling tube; the sleeve is sleeved outside the inner layer sampling tube, and a second air hole is formed in the side wall of the sleeve, which is not higher than the central shaft; the highest point of the second air hole is lower than the central axis of the sleeve; a first air hole is formed in the side wall of the inner layer sampling tube, which is positioned below the inner layer sampling tube; the side walls of the sleeve, which are positioned below and/or at the left side and the right side, are provided with second air holes; the aperture of the second air hole is larger than that of the first air hole; a plurality of partitions are arranged between the inner wall of the sleeve and the outer wall of the inner sampling tube, the space between the sleeve and the inner sampling tube is divided into a plurality of mutually independent parts, and the included angle between the normal line of each partition and the central axis of the sleeve is one of an acute angle, an obtuse angle or a right angle; a first air hole is formed in the pipe wall of the inner layer sampling pipe between two adjacent partitions; the central axis of the inner sampling tube is parallel to the central axis of the sleeve, and the central axis of the inner sampling tube is higher than the central axis of the sleeve.
2. A cable trench fire detection apparatus comprising the sampling tube of claim 1 and a fire detector coupled to the sampling tube.
3. The cable pit fire early warning system is characterized by comprising the cable pit fire detection device according to claim 2, and further comprising a direct-current uninterrupted power supply, a protocol converter, a transformer substation auxiliary control system, a transformer substation control system, a fire control system sampling point and a fire control system, wherein the output end of the direct-current uninterrupted power supply is connected with the input end of the fire detector, the output end of the fire detector is respectively connected with the protocol converter and the fire control system sampling point, the protocol converter is sequentially connected with the transformer substation auxiliary control system and the transformer substation control system, and the fire control system sampling point is connected with the fire control system; the fire detector is connected with a sampling tube, and the sampling tube samples air of the cable duct.
4. A raceway fire early warning system according to claim 3, characterized in that the fire detector is mounted in a raceway or a cable tunnel, and that the sampling pipes are arranged on both sides of the raceway or on top of the cable tunnel.
5. A cable pit fire early warning system according to claim 3, wherein the fire detector is connected with the protocol converter and the protocol converter is connected with the auxiliary control system of the transformer substation through RS485 communication, and the auxiliary control system of the transformer substation is connected with the control system of the transformer substation through IEC61850 communication; the fire detector is in communication connection with the fire control system sampling point and the fire control system through the dry connection point.
6. A cable pit fire early warning method, the method comprising:
step one: the sampling tube sends air of the target monitoring area to the fire detector for analysis, and whether fire hidden danger exists in the target monitoring area is judged;
step two: the fire detector takes real-time data, fire early warning signals and equipment fault signals sent by the sampling tube as data sets, and respectively transmits the data sets to an auxiliary control system and a fire control system sampling point for monitoring and storage through a communication line;
step three: the auxiliary control system transmits the stored real-time data, fire early warning signals and equipment fault signals to a substation control system or a substation monitoring center duty room; the sampling point of the fire control system transmits the stored real-time data, fire early warning signals and equipment fault signals to the fire control system so that the fire control system can control fire equipment;
The sampling tube comprises an inner layer sampling tube and a sleeve, wherein a first air hole is formed in the wall of the inner layer sampling tube; the sleeve is sleeved outside the inner layer sampling tube, and a second air hole is formed in the side wall of the sleeve, which is not higher than the central shaft; the highest point of the second air hole is lower than the central axis of the sleeve; a first air hole is formed in the side wall of the inner layer sampling tube, which is positioned below the inner layer sampling tube; the side walls of the sleeve, which are positioned below and/or at the left side and the right side, are provided with second air holes; the aperture of the second air hole is larger than that of the first air hole; a plurality of partitions are arranged between the inner wall of the sleeve and the outer wall of the inner sampling tube, the space between the sleeve and the inner sampling tube is divided into a plurality of mutually independent parts, and the included angle between the normal line of each partition and the central axis of the sleeve is one of an acute angle, an obtuse angle or a right angle; a first air hole is formed in the pipe wall of the inner layer sampling pipe between two adjacent partitions; the central axis of the inner sampling tube is parallel to the central axis of the sleeve, and the central axis of the inner sampling tube is higher than the central axis of the sleeve.
7. The cable pit fire early warning method according to claim 6, wherein the fire detector is connected with a power supply module, the power supply module is a direct current uninterrupted power supply, the direct current uninterrupted power supply is provided with an alternating current power failure detection device, and the alternating current power failure detection device is used for sending an alternating current fault warning signal and/or a power failure signal by the direct current uninterrupted power supply when alternating current power fails and transmitting the signal to a substation control system and/or a substation monitoring center duty room through a communication port of the fire detector.
8. The method of claim 6, wherein the controlling the fire fighting equipment comprises activating an alarm device and activating a spraying device.
9. A cable pit fire early warning device, characterized in that includes:
the analysis module is used for sending the air of the target monitoring area to the fire detector for analysis by the sampling tube and judging whether the fire hidden danger exists in the target monitoring area;
the monitoring and storage module is used for taking real-time data, fire early warning signals and equipment fault signals sent by the sampling tube as data sets by the fire detector, and respectively transmitting the data sets to the auxiliary control system and the fire control system sampling points through the communication line for monitoring and storage;
the data transmission module is used for transmitting the stored real-time data, fire early warning signals and equipment fault signals to a substation control system or a substation monitoring center duty room by the auxiliary control system; the sampling point of the fire control system transmits the stored real-time data, fire early warning signals and equipment fault signals to the fire control system so that the fire control system can control fire equipment;
the sampling tube comprises an inner layer sampling tube and a sleeve, wherein a first air hole is formed in the wall of the inner layer sampling tube; the sleeve is sleeved outside the inner layer sampling tube, and a second air hole is formed in the side wall of the sleeve, which is not higher than the central shaft; the highest point of the second air hole is lower than the central axis of the sleeve; a first air hole is formed in the side wall of the inner layer sampling tube, which is positioned below the inner layer sampling tube; the side walls of the sleeve, which are positioned below and/or at the left side and the right side, are provided with second air holes; the aperture of the second air hole is larger than that of the first air hole; a plurality of partitions are arranged between the inner wall of the sleeve and the outer wall of the inner sampling tube, the space between the sleeve and the inner sampling tube is divided into a plurality of mutually independent parts, and the included angle between the normal line of each partition and the central axis of the sleeve is one of an acute angle, an obtuse angle or a right angle; a first air hole is formed in the pipe wall of the inner layer sampling pipe between two adjacent partitions; the central axis of the inner sampling tube is parallel to the central axis of the sleeve, and the central axis of the inner sampling tube is higher than the central axis of the sleeve.
10. The cable pit fire early warning device according to claim 9, further comprising a power supply module, wherein the fire detector is connected with the power supply module, the power supply module is a direct-current uninterruptible power supply, the direct-current uninterruptible power supply is provided with an alternating-current power failure detection device, and the alternating-current power failure detection device is used for sending an alternating-current failure warning signal and/or a power failure signal by the direct-current uninterruptible power supply when alternating-current power fails and transmitting the signals to a substation control system and/or a substation monitoring center duty room through a communication port of the fire detector.
11. The cable pit fire early warning device of claim 9, wherein the data transmission module is further configured to activate an alarm device and activate a spray device.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6084520A (en) * | 1998-07-30 | 2000-07-04 | Salvucci; John G. | Leak collection and supply shut off system |
| CN1716328A (en) * | 2000-02-10 | 2006-01-04 | 马丁·T·科尔 | Improvements relating to smoke detectors particularly ducted smoke detectors |
| CN101763708A (en) * | 2009-12-28 | 2010-06-30 | 公安部沈阳消防研究所 | Wind pipe smoke-sensing fire detector |
| CN102542721A (en) * | 2012-01-19 | 2012-07-04 | 徐晓霖 | Intelligentized fire detection tube capable of conducting abnormal information and providing early warning information |
| CN105917208A (en) * | 2013-10-16 | 2016-08-31 | 爱克斯崔里斯科技有限公司 | Aspirated particle detection with various flow modifications |
| CN206208387U (en) * | 2016-08-31 | 2017-05-31 | 四川天微电子有限责任公司 | A kind of Mars probes for dust collecting duct |
| JP2017228019A (en) * | 2016-06-21 | 2017-12-28 | ホーチキ株式会社 | Smoking tester |
| KR101849687B1 (en) * | 2017-07-20 | 2018-04-19 | 동부전기기술단(주) | Residual gas collector for XLPE cable |
| CN108492516A (en) * | 2018-04-25 | 2018-09-04 | 石梦成 | A kind of infrared monitoring device with smoke sensing function |
| CN208569835U (en) * | 2018-08-23 | 2019-03-01 | 合肥合安智为科技有限公司 | A kind of fire alarm suction pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7656301B2 (en) * | 2005-12-14 | 2010-02-02 | Teradata Us, Inc. | Smoke detection for hardware cabinets |
-
2019
- 2019-04-30 CN CN201910361584.8A patent/CN110033588B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6084520A (en) * | 1998-07-30 | 2000-07-04 | Salvucci; John G. | Leak collection and supply shut off system |
| CN1716328A (en) * | 2000-02-10 | 2006-01-04 | 马丁·T·科尔 | Improvements relating to smoke detectors particularly ducted smoke detectors |
| CN101763708A (en) * | 2009-12-28 | 2010-06-30 | 公安部沈阳消防研究所 | Wind pipe smoke-sensing fire detector |
| CN102542721A (en) * | 2012-01-19 | 2012-07-04 | 徐晓霖 | Intelligentized fire detection tube capable of conducting abnormal information and providing early warning information |
| CN105917208A (en) * | 2013-10-16 | 2016-08-31 | 爱克斯崔里斯科技有限公司 | Aspirated particle detection with various flow modifications |
| JP2017228019A (en) * | 2016-06-21 | 2017-12-28 | ホーチキ株式会社 | Smoking tester |
| CN206208387U (en) * | 2016-08-31 | 2017-05-31 | 四川天微电子有限责任公司 | A kind of Mars probes for dust collecting duct |
| KR101849687B1 (en) * | 2017-07-20 | 2018-04-19 | 동부전기기술단(주) | Residual gas collector for XLPE cable |
| CN108492516A (en) * | 2018-04-25 | 2018-09-04 | 石梦成 | A kind of infrared monitoring device with smoke sensing function |
| CN208569835U (en) * | 2018-08-23 | 2019-03-01 | 合肥合安智为科技有限公司 | A kind of fire alarm suction pipe |
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|---|---|
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