CN114053623A

CN114053623A - Automatic water spraying fire extinguishing system for building outer wall

Info

Publication number: CN114053623A
Application number: CN202111518541.XA
Authority: CN
Inventors: 王振国; 吕学东; 宋玉林
Original assignee: Hebei Jiecheng Door & Window Co ltd
Current assignee: Hebei Jiecheng Door & Window Co ltd
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-02-18
Also published as: ZA202206785B

Abstract

The application relates to a building outer wall automatic water spray fire extinguishing system includes: the high-level fire-fighting water tank is arranged on the roof of a building and is used for storing water; the spraying devices are used for spraying the fire floor; the water pipe is communicated with the high-level fire-fighting water tank and the spraying device so as to guide water in the high-level fire-fighting water tank to the spraying device; the detection devices are used for detecting the state of the building wall in real time and outputting corresponding detection signals; the main control module is connected with the plurality of detection devices and the plurality of spraying devices and used for receiving detection signals of the plurality of detection devices, judging the fire state of the building wall according to the detection signals and controlling the spraying devices at corresponding positions to be started when the building wall is determined to have fire points; wherein each layer is provided with at least one spraying device and at least one detection device. This application has the effect of automatic water spray fire extinguishing when building outer wall is on fire.

Description

Automatic water spraying fire extinguishing system for building outer wall

Technical Field

The application relates to the field of fire safety, in particular to an automatic water spraying fire extinguishing system for an outer wall of a building.

Background

When a resident building is in fire, the property of residents is often lost, and the life safety of the residents is seriously threatened, so that the resident building is very necessary to put out the fire in time when the resident building is in fire.

At present, fire fighting equipment such as fire hydrants, fire extinguishers and smoke alarms with automatic spraying functions are often arranged in residential buildings, nearby residents can extinguish fire at the early stage of indoor fire, but when fire breaks out on the outer wall of a high-rise building or the fire breaks out on the outer wall due to indoor fire, the fire on the outer wall is violent, and the fire extinguishment efficiency is too low only by adopting the fire extinguisher or the fire hydrant; in the process of waiting for fire rescue, the fire on the outer wall of the building can spread, and more serious loss is caused.

In addition, when the fire engine comes, the situation that the water pressure of the fire engine is insufficient due to the fact that the high-rise part is too far away from the ground can occur, the fire engine is difficult to spray and extinguish the fire in a high-rise fire occurrence area, and the threat of fire on the outer wall of a building to property and life safety of residents continuously exists.

Disclosure of Invention

In order to can in time put out automatically when building outer wall catches fire, this application provides a building outer wall automatic fire extinguishing system, adopts following technical scheme, includes:

the high-level fire-fighting water tank is arranged on the roof of a building and is used for storing water;

the spraying devices are used for spraying the fire floor;

the water pipe is communicated with the high-level fire water tank and the spraying device so as to guide water in the high-level fire water tank to the spraying device;

the detection devices are used for detecting the state of the building wall in real time and outputting corresponding detection signals;

the main control module is connected with the plurality of detection devices and the plurality of spraying devices and used for receiving detection signals of the plurality of detection devices, judging the fire state of the building wall according to the detection signals and controlling the spraying devices at corresponding positions to be started when the building wall is determined to have fire points;

wherein each layer is provided with at least one spraying device and at least one detection device.

By adopting the technical scheme, the detection device detects the state of the building wall and outputs the state of the building wall in a detection signal mode, the main control module receives the detection signal and then judges the fire state of the building wall corresponding to the detection signal, and when one or more detection signals are judged to be the fire state, the main control module controls the corresponding spraying device to be opened to spray on the fire floor. The water in the high-level fire-fighting water tank flows to a spraying device through a water pipe, and the spraying device sprays and extinguishes fire on a fire-firing floor; at the initial stage of fire of the building wall, the main control module is used for controlling the spraying device to automatically spray and extinguish fire to the fire-firing floor when the building wall fires, so that the probability of fire spreading caused by incapability of timely fighting when the building wall fires is reduced to a certain extent.

Optionally, the water pipe comprises a branch water pipe and a water spraying pipe which are communicated;

the high-level fire water tank is communicated with the branch water pipe, and the branch water pipe is communicated with the water spray pipe;

the water spray pipes are correspondingly arranged on each floor of the building around the building wall;

at least one spraying device arranged on each layer is arranged on the water spraying pipe at equal intervals;

at least one detection device arranged on each floor is embedded in a building wall body;

for each detection signal, the main control module is specifically configured to judge, according to the detection signal, a fire state of a building wall at a position where the detection device corresponding to the detection signal is located, and control at least one spraying device closest to the position to be turned on when it is determined that the building wall at the position has a fire point.

Through adopting above-mentioned technical scheme, utilize the branch road water pipe to communicate high-order fire water tank and spray pipe, rivers in the high-order fire water tank lead to the spray pipe in, spray set utilizes the water in the spray pipe to spray, the equidistant spray set that sets up on the spray pipe of surrounding the building of setting to when the conflagration appears in the building wall body, spray by the spray set on the spray pipe near detection device, spray the emergence position of conflagration, improve the effect of spraying and putting out a fire.

Optionally, the detection device includes a temperature sensor, and the temperature sensor is configured to detect a temperature state of a building wall in real time and output a corresponding temperature signal;

the main control module is connected with the temperature sensors and is specifically used for receiving temperature signals of the temperature sensors, judging the fire state of the building wall according to the temperature signals and controlling the spray devices at corresponding positions to be opened when the fire point of the building wall is determined;

and the main control module is also used for determining the temperature change rate according to the temperature signal so as to judge the severity of the current fire and further adjust the spraying flow of the corresponding spraying device.

By adopting the technical scheme, the temperature sensor detects the temperature of the building wall, when the temperature of the main control module is suddenly increased compared with the temperature of the adjacent area of a certain floor, the building wall of the current floor is judged to be on fire, the main control module is started to spray water with the spraying device for fire extinguishment, the main control module collects the initial temperature value and the final temperature value in a preset period of time, and the temperature change rate is calculated. Comparing the temperature change rate with a preset temperature change threshold value to judge the relative magnitude of the temperature change rate and the preset temperature change threshold value, and if the temperature change rate is smaller than the preset temperature change threshold value, controlling the spraying flow of the spraying device to be unchanged; if the temperature is larger than the preset temperature change threshold value, the spraying flow of the spraying device is controlled to be increased, and the flow is increased to control the fire when the fire is large.

Optionally, the method further includes: an alarm module;

the main control module is connected with the alarm module and used for controlling the alarm module to give an alarm when the building wall is determined to have a fire point.

Through adopting above-mentioned technical scheme, when the main control module judged that the wall body that one or more floors correspond conflagration breaks out, output alarm signal earlier, alarm module reports to the police to the conflagration condition, can utilize the extinguishing device that the building was equipped with to spray water and put out a fire, or in time sparse when having personnel to exist near the building according to the police dispatch newspaper.

Optionally, the method further includes: a water pump and a water supply pipe;

the water suction pump is communicated with the plurality of water spray pipes through a water supply pipe;

the main control module is connected with the water suction pump and used for controlling the spraying device at the corresponding position to be started when the building wall is determined to have a fire point and controlling the water suction pump to be started so as to pump water into the water spraying pipe through the water conveying pipe.

Through adopting above-mentioned technical scheme, when the building outer wall is on fire, main control module control suction pump is opened, extracts groundwater, with groundwater through the delivery pipe pump sending to the spray pipe in, the effect that the water supply return circuit that constitutes with high-order fire water tank has together realized two return circuits and has supplied water, improves the reliability of the work of spraying fire extinguishing systems.

Optionally, the method for automatically spraying water to extinguish fire on the outer wall of the building is applied to a main control module in the automatic water spraying fire extinguishing system for the outer wall of the building, and the method includes:

receiving a detection signal of a detection device;

judging the fire state of the building wall according to the detection signal;

and aiming at each detection signal, if the building wall is determined to have an ignition point according to the detection signal, controlling the spraying device at the corresponding position to be started.

Through adopting above-mentioned technical scheme, host system utilizes the detected signal of detection device output, determines unusual detected signal, judges the corresponding floor that fires according to unusual detected signal, and then controls a plurality of spray set and spray the floor that fires, realizes automated inspection and judges the state of firing of building wall and carries out the effect that sprays automatically to building wall when firing.

Optionally, the control of the opening of the spraying device at the corresponding position includes:

and controlling at least one spraying device closest to the position of the detection device corresponding to the detection signal to be started.

Through adopting above-mentioned technical scheme, utilize host system to open the nearest spray set in position of starting a fire, directly spray near the position of starting a fire and put out a fire, improved the efficiency of putting out a fire.

Optionally, the receiving a detection signal of the detection apparatus includes:

receiving a temperature signal of a temperature sensor;

the method for judging the fire state of the building wall according to the detection signal comprises the following steps:

judging the fire state of the building wall according to the temperature signal;

determining the temperature change rate according to the temperature signal so as to judge the severity of the current fire;

the method further comprises the following steps:

and aiming at each detection signal, if the building wall is determined to have a fire point according to the detection signal, determining the temperature change rate according to the temperature signal, and adjusting the spraying flow of the corresponding spraying device.

Through adopting above-mentioned technical scheme, when the host system detects that certain floor conflagration breaks out, calculate the temperature change rate of confirming in the time of predetermineeing, when the temperature change rate exceeded the threshold value of predetermined temperature variation, it is fast to confirm the conflagration of present building wall body, need spray as soon as possible to put out a fire to the building wall body, increases spray set's the flow that sprays, improves the efficiency of automatic water spray fire extinguishing.

Optionally, for each detection signal, if it is determined that a fire point exists on the building wall according to the detection signal, the alarm module is controlled to give an alarm.

Through adopting above-mentioned technical scheme, when master control module judged that present building wall body has the ignition, control alarm module reported to the police to the conflagration, when personnel near the conflagration, can utilize modes such as fire extinguisher to put out a fire according to the circumstances, also can in time evacuate protection life safety according to the circumstances.

Optionally, for each detection signal, if it is determined that the building wall has an ignition point according to the detection signal, the spray device at the corresponding position is controlled to be opened, including,

and aiming at each detection signal, if the building wall is determined to have an ignition point according to the detection signal, the spraying device at the corresponding position is controlled to be started, and the water suction pump is controlled to be started so as to pump water into the water spraying pipe through the water conveying pipe.

Through adopting above-mentioned technical scheme, when there is the ignition in the building wall body, master control module opens suction pump and spray set simultaneously, utilizes the suction pump with groundwater through the pump income of flow pipe to the spray pipe in, utilizes the setting in two water sources, two water sources as reserve water source each other, when water source goes wrong all the way, another way water source can play certain guarantee effect to the water spray effect.

In summary, the present application includes at least one of the following beneficial technical effects:

the detection device detects the state of the building wall and outputs the state of the building wall in a detection signal mode, the main control module receives the detection signal and then judges the fire state of the building wall corresponding to the detection signal, and when one or more detection signals are judged to be in the fire state, the main control module controls the corresponding spraying devices to be opened to spray on the fire floor. The water in the high-level fire-fighting water tank flows to a spraying device through a water pipe, and the spraying device sprays and extinguishes fire on a fire-firing floor; in the initial stage of fire of the building wall, the main control module is used for controlling the spraying device to automatically spray and extinguish fire on the fire-firing floor when the building wall fires, so that the probability of fire spreading caused by incapability of timely fighting when the building wall fires is reduced to a certain extent;

2. the temperature sensor detects the temperature of the building wall, when the temperature of a certain floor is suddenly increased compared with the temperature of an adjacent area, the main control module judges that the building wall of the current floor is on fire, the main control module is started to spray water with the spraying device for fire extinguishment, the main control module collects an initial temperature value and a final temperature value in a preset period of time, and the temperature change rate is calculated. Comparing the temperature change rate with a preset temperature change threshold value to judge the relative magnitude of the temperature change rate and the preset temperature change threshold value, and if the temperature change rate is smaller than the preset temperature change threshold value, controlling the spraying flow of the spraying device to be unchanged; if the temperature is larger than the preset temperature change threshold value, the spraying flow of the spraying device is controlled to be increased, and the flow is increased to control the fire when the fire is large.

Drawings

FIG. 1 is a diagram illustrating an arrangement of an automatic sprinkler system for an exterior wall of a building according to an embodiment of the present application;

FIG. 2 is a block diagram of an automatic sprinkler system for an exterior wall of a building according to an embodiment of the present application;

FIG. 3 is a diagram of an apparatus setup for another way of setting up the apparatus of an embodiment of the present application;

FIG. 4 is a diagram of a spray assembly according to an embodiment of the present application;

FIG. 5 is a connection diagram of an alarm module of an embodiment of the present application;

FIG. 6 is a diagram of a water pump arrangement according to an embodiment of the present application;

FIG. 7 is a diagram illustrating an arrangement of a high level detection water tank according to an embodiment of the present application;

FIG. 8 is a schematic step diagram illustrating an automatic water-spraying fire-extinguishing method for an exterior wall of a building according to an embodiment of the present application;

description of reference numerals: 1. a high-level fire water tank; 11. a water storage valve; 12. a liquid level sensor; 2. a water pipe; 21. a branch water pipe; 22. a water spray pipe; 23. a drainage device; 231. a drain pipe; 232. a drain valve; 3. a spraying device; 31. a spray valve; 32. a spray pump; 4. a detection device; 5. a main control module; 6. an alarm module; 7. a water pump; 71. a water supply pipe; 72. and a water supply valve.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

The embodiment of the application discloses building outer wall automatic water spray fire extinguishing systems, refer to figure 1, include: the high-level fire water tank 1 is arranged on the roof of a building and used for storing water; the spraying devices 3 are used for spraying the fire floor; the water pipe 2 is communicated with the high-level fire water tank 1 and the spraying device 3 so as to guide water in the high-level fire water tank 1 to the spraying device 3; the detection devices 4 are used for detecting the state of the building wall in real time and outputting corresponding detection signals; referring to fig. 2 again, the present application further includes a main control module 5 connected to the plurality of detection devices 4 and the plurality of spraying devices 3, only one detection device 4 and one spraying device 3 are shown in fig. 2 to illustrate the connection relationship, the connection relationship between the plurality of detection devices 4 and the plurality of spraying devices 3 and the main control module 5 refers to fig. 2, the main control module 5 is configured to receive detection signals of the plurality of detection devices 4, determine the fire state of the building wall according to the detection signals, and control the spraying devices 3 at corresponding positions to be turned on when it is determined that the building wall has a fire point; wherein each layer is provided with at least one spraying device 3 and at least one detection device 4.

Specifically, the plurality of detection devices 4 detect the state of the building wall corresponding to the floor, and output the state of the building wall as a detection signal. The main control module 5 receives the detection signals and judges the states of the building walls corresponding to the detection signals according to the detection signals, when the states of the building walls corresponding to one or more detection signals are in a fire state, the main control module 5 controls the corresponding spraying devices 3 to be opened to spray the building walls corresponding to floors, after the spraying devices 3 are opened, water in the high-level fire water tank 1 flows to the spraying devices 3 through the water pipes 2, and the spraying devices 3 are opened to spray and extinguish fire on the fire floors; at the initial stage of fire of the building wall, the main control module 5 is utilized to control the spraying device 3 to automatically spray and extinguish fire to the firing floor when the building wall fires, so that the fire development is weakened to a certain extent, even the fire is eliminated, and the probability of fire spreading caused by the fact that the building wall cannot be timely put out of fire when the fire occurs is reduced.

Fig. 3 can also be referred to for the arrangement of the water pipe 2 and the spraying device 3. As shown in fig. 3, the water pipe 2 includes a branch water pipe 21 provided at one side of a building wall; the water pipe 2 further includes a plurality of water spray pipes 22 arranged around the wall of the building. Several spray devices 3 can be arranged on the spray pipes 22 at equal intervals, and the interval between two spray devices 3 is adaptively set according to the width of a floor, so that the spray devices 3 in at least one floor can cover the whole wall of the current floor when being opened. Several detection devices 4 can be arranged at preset positions, for example at equipment susceptible to fire; or the fire extinguishing device can be matched with the spraying device 3, when the detection device 4 detects a fire, the nearby spraying device 3 directly sprays and extinguishes the fire to the detection device 4, and the fire extinguishing effect is improved.

Further, in order to improve the spraying effect on fire, the spraying devices 3 are symmetrically arranged on two sides of the central axis of the spray pipe 22; when the detection device 4 detects a fire, the two spraying devices 3 which are symmetrical up and down are enabled to start spraying at the same time, and the spraying and fire extinguishing to the lower floor and the spraying and temperature reduction to the upper floor are realized, so that the probability of fire spreading is reduced.

Referring to fig. 3, the high-level fire-fighting water tank 1 is communicated with a branch water pipe 21, the branch water pipe 21 is communicated with a spray pipe 22, water in the high-level fire-fighting water tank 1 is guided to the spray pipe 22 by the branch water pipe 21, and then the spray device 3 is used for spraying on a fire floor; a water storage valve 11 is arranged on the branch water pipe 21, the water storage valve 11 is connected with the main control module 5, when spraying is carried out on a fire floor, the main control module 5 controls the water storage valve 11 to be opened, and water in the high-level fire water tank 1 flows into the branch water pipe 21 and the water spraying pipe 22; the spraying device 3 is used for fighting fire on the floor. Referring to fig. 4 again, the spraying device 3 comprises a spraying head, a spraying pump 32 and a spraying valve 31, the spraying pump 32 is connected with the spraying head, the spraying valve 31 is arranged on the spray pipe 22, the main control module 5 is connected with the spraying valve 31, the main control module 5 is connected with the spraying pump 32, when spraying is carried out, the main control module 5 controls to open the spraying valve 31 and the spraying pump 32, water in the spray pipe 22 is sprayed along the spraying head under the action of the spraying pump 32, and fire floors are rescued.

Wherein, the water outlet external diameter of the spray header is big and the internal diameter is little, when utilizing spray set 3 to spray the floor of catching a fire, can increase the spray area of spray header.

In one possible embodiment, a circle of spray pipes 22 is provided around each floor, and during a fire, the spray devices 3 on the spray pipes 22 corresponding to the floor on which the fire is on are used to spray on the floor on which the fire is on.

In another realizable mode, the spray pipes 22 are arranged at every two layers from the highest layer downwards, and when a fire breaks out, the spray devices 3 on the previous floor or the current floor of the fire break out are opened to spray on the fire break out floor, so that the basic premise of spraying and extinguishing the fire on the building wall is realized, and the cost is saved.

Further, for each detection signal, the main control module 5 is specifically configured to determine, according to the detection signal, an ignition state of the building wall at the position where the detection device 4 is located corresponding to the detection signal, and control at least one spraying device 3 closest to the position to be turned on when the building wall at the determined position has an ignition point.

Specifically, the main control module 5 determines the state value of the detection signal, and when a fire breaks out on a floor of the building wall, the main control module 5 determines that the detection signal exceeds a preset threshold value according to the detection signal, so as to determine the floor on which the fire breaks out. In the equipment arrangement mode shown in fig. 1, at least one spraying device 3 closest to the position is shown, and when the nth layer is on fire, the main control module 5 controls a plurality of spraying devices 3 correspondingly arranged on the nth layer to be opened, namely controls the spraying devices 3 corresponding to a and b shown in fig. 1 to be opened; in the arrangement mode of the equipment shown in fig. 3, at least one spraying device 3 closest to the position indicates that when the nth layer is on fire, the main control module 5 controls all the spraying devices 3 in the nth layer to spray, namely the spraying devices 3 corresponding to the positions c, d, e, f and g shown in fig. 3 are opened to spray water to extinguish the nth layer; when the nth floor is on fire, in another mode that can realize, main control module 5 controls all spray set 3 on nth floor and (N + 1) th floor to spray the floor of being on fire and put out a fire, opens spray set 3 on the floor of being on fire and above floor, sprays the floor of being on fire simultaneously, effectively reduces the probability that the intensity of a fire spreads.

In particular, the detection means 4 may employ a temperature sensor and/or a smoke sensor. As a practical way, the detection device 4 may employ a temperature sensor. The temperature sensor detects the temperature of the building wall at the position, and then outputs a detection signal of the temperature state; the main control module 5 obtains the temperature of each floor building wall, when the temperature of a certain floor is suddenly increased compared with the temperature of the adjacent area, the building wall of the current floor can be judged to be on fire, the spraying devices 3 corresponding to the floors are opened to spray water for fire extinguishment, when the building wall is on fire, the states of the building wall are automatically detected by the detection devices 4, the corresponding spraying devices 3 are automatically controlled by the control module to spray water for fire extinguishment, the fire behavior is weakened or even eliminated by means of an automatic mode to a certain extent, and the probability that small fires are changed into large fire behavior is reduced.

As another possible embodiment, the detection device 4 may employ a smoke sensor. When a fire breaks out, the smoke sensor can measure surrounding gas, so that the gas concentration is collected, and a detection signal corresponding to the gas concentration state is output; the main control module 5 receives a plurality of detection signals, judges the gas concentration, judges that the floor where the smoke sensor exceeding the threshold is positioned is on fire if the gas concentration exceeds a preset threshold, and controls the spraying device 3 corresponding to the floor to spray.

As another implementation manner, the detection device 4 may simultaneously adopt a temperature sensor and a smoke sensor, the temperature sensor detects the temperature of the building wall, the smoke sensor detects the gas concentration around the building wall, and the main control module 5 controls the spraying device 3 corresponding to the floor to spray when both the temperature and the concentration of the building wall exceed a preset threshold, so as to improve the accuracy of the judgment of the floor fire and reduce the misjudgment.

Furthermore, if the wall of the fire building has a large fire, the fire increases rapidly, and a serious fire is easily formed in a short time. Therefore, when the fire of the wall body of the fire floor is serious, the spraying efficiency of the fire floor can be improved. In the automatic water spraying fire extinguishing system for the outer wall of the building, in order to increase the spraying efficiency of the fire floor, the main control module 5 is used for determining the temperature change rate according to the temperature signals after receiving the temperature signals of the temperature sensors so as to judge the severity of the current fire and further adjust the spraying flow of the corresponding spraying device 3.

The temperature sensor transmits the acquired temperature of the building wall to the main control module 5 in real time, the main control module 5 acquires an initial temperature value and a final temperature value in a preset period of time, the sizes of the final temperature value and the initial temperature value are firstly judged, if the final temperature value is greater than the initial temperature value, the difference value between the final temperature value and the initial temperature value is calculated, and then the temperature change rate is calculated. Comparing the temperature change rate with a preset temperature change threshold value to judge the relative magnitude of the temperature change rate and the preset temperature change threshold value, and if the temperature change rate is smaller than the preset temperature change threshold value, controlling the spraying flow of the spraying device 3 to be unchanged; and if the temperature is larger than the preset temperature change threshold value, controlling the spraying flow of the spraying device 3 to increase.

Specifically, the flow rate may be controlled in a specific manner by controlling the opening of the water storage valve 11, and when it is determined that the temperature change rate is greater than a preset temperature change threshold, the main control module 5 controls the opening of the water storage valve 11 to increase, so as to increase the flow rate of the water spray pipe 22 and improve the spray flow rate; the specific way of controlling the flow rate may also be to control the opening degree of the spray valve 31, and when it is determined that the temperature change rate is greater than a preset temperature change threshold, the main control module 5 controls the opening degree of the spray valve 31 to increase, so as to increase the spray flow rate; or the rotating speed of the spraying pump 32 can be controlled, and when the temperature change rate is judged to be greater than the preset temperature change threshold, the main control module 5 controls the rotating speed of the spraying pump 32 to increase, so that the spraying flow of the spraying device 3 is increased.

Further, when the temperature change rate of the main control module 5 is greater than a preset temperature change threshold, that is, when the current fire is serious, the number of the spraying devices 3 that are turned on can also be increased to reduce the severity of the fire, and in an realizable manner, when the nth layer fires and the main control module 5 judges that the current temperature change rate is less than the preset temperature change threshold, the main control module 5 controls all the spraying devices 3 on the nth layer and the (N + 1) th layer to be turned on; when the nth layer is on fire, and the main control module 5 judges that the current temperature change rate is greater than the preset temperature change threshold value, the main control module 5 controls all the spraying devices 3 on the nth layer, the (N + 1) th layer and the (N + 2) th layer to be started.

In the initial stage of fire, if the fire of the current fire is violent, the spray devices 3 on the floor on fire and above can be opened in advance, and the spray efficiency is further improved.

Further, referring to fig. 5, the main control module 5 is further connected with an alarm module 6, and is configured to output an alarm signal when it is determined that a fire occurs on a building wall; the alarm module 6 gives an alarm in response to the alarm signal.

The alarm module 6 can adopt a sound-light alarm mode, the main control module 5 receives the detection signals and outputs alarm signals when the main control module judges that the wall corresponding to one or more floors is in fire, the alarm module 6 alarms the fire condition, and when personnel exist nearby a building, a fire extinguishing device equipped for the building can be used for spraying water to extinguish the fire or evacuate in time according to the alarm; if the fire is not strong, the personnel put out the fire, then the main control module 5 judges the floor without fire, no longer outputs the alarm signal, the alarm module 6 stops the alarm.

After the main control module 5 controls the alarm module 6 to give an alarm, the corresponding spraying device 3 is controlled to spray in a delayed mode.

When an alarm is given out, the control module controls the spraying device 3 to spray and extinguish a fire after the preset delay time, if a person extinguishes the fire during the delay time, the main control module 5 stops controlling the spraying device 3 to spray after the delay time is over and judges that the current building wall has no fire point, and the spraying device 3 does not spray.

Further, in order to increase the efficiency of the water spray, a water suction pump 7 may also be provided in one embodiment. Referring to fig. 6, the water suction pump 7 is communicated with a water supply pipe 71, the water supply pipe 71 is communicated with the plurality of water spray pipes 22, the water supply pipe 71 extends upwards along one side of the building, the water suction pump 7 is connected with a fire pool, when the water suction pump 7 is started, the water suction pump is used for pumping underground water stored in the fire pool, the underground water is pumped into the water spray pipes 22 through the water supply pipe 71, the effect of double-loop water supply is achieved, and the sufficiency of water sources is further guaranteed.

In one embodiment, the main control module 5 is connected to the water pump 7, and is used for controlling the spray device 3 at the corresponding position to be turned on when the building wall is determined to have a fire point, and controlling the water pump 7 to be turned on so as to pump water into the spray pipe 22 through the water supply pipe 71. When a fire disaster occurs, the main control module 5 controls the water suction pump 7 to be started after judging the fire-starting floor, underground water is pumped into the spray pipe 22, and the spray device 3 in the spray pipe 22 is utilized to spray the fire-starting floor to realize the fire-extinguishing effect.

In another embodiment, a standard line is preset in the main control module 5, and the fire extinguishing mode of the floor where the fire is located on the preset standard line is different from the fire extinguishing mode of the floor under the preset standard line. Specifically, when it is determined that the building wall has a fire point, the main control module 5 determines the number of floors where the fire point of the building wall is located and the size of a preset standard line; if the fire point is above a preset standard line, controlling a water storage valve 11 of the high-level fire water tank 1 to be opened, closing a water suction pump 7, and supplying water to a high-rise wall of a building by using the high-level fire water tank 1 to spray and extinguish the fire on the wall of the building; when the water is below a preset standard line, the water storage valve 11 of the high-level fire water tank 1 is controlled to be closed, the water suction pump 7 is controlled to be opened, and underground water is used for spraying and extinguishing fire on the low-rise wall of the building. When a fire disaster occurs in a high-rise building, water in the high-level fire water tank 1 is directly utilized to spray and extinguish the fire on the building wall; when a fire disaster occurs in a low-rise building, underground water is utilized for spraying and extinguishing the fire, and the spraying efficiency is improved.

Further, referring to fig. 6, the water supply pipe 71 is also communicated with the high-level fire water tank 1, and a water supply valve 72 is also provided on the water supply pipe 71. Closing the water supply valve 72, namely closing the communication between the water supply pipe 71 and the high-level fire water tank 1, and opening the water supply valve 72 to ensure that the water supply pipe 71 is communicated with the high-level fire water tank 1; when the water supply valve 72 is opened, the water supply pipe 71 is used to fill the high-level fire water tank 1 with water.

A liquid level sensor 12 is provided in the high-level fire water tank 1 for detecting the liquid level of the liquid in the high-level fire water tank 1. The main control module 5 is connected with the liquid level sensor 12, and judges the stock of the liquid according to the liquid level of the liquid in the high-level fire water tank 1. A high water level standard and a low water level standard are preset in the main control module 5, and when the liquid level is lower than or equal to the low water level standard, the water suction pump 7 and the water delivery valve 72 are controlled to be opened, so that underground water is pumped into the high-level fire water tank 1; when the liquid level gradually rises to be higher than or equal to the high water level standard, the water suction pump 7 and the water delivery valve 72 are controlled to be closed, and the liquid in the high-level fire water tank 1 is stored. When the high-level fire water tank 1 is lack of water, the liquid of the high-level fire water tank 1 is supplemented, a certain amount of liquid is kept in the high-level fire water tank 1, and the water cannot be lack of water when fire exists.

In addition, in autumn and winter or in the area that the temperature is low on the low side, because the temperature influence, there is the risk of freezing the water storage in the spray pipe 22, increase the degree of difficulty of putting out a fire after freezing on the one hand, water is difficult to be leading-in, on the other hand probably makes water pipe 2 directly break, in order in time to discharge the water in the spray pipe 22 after putting out a fire, refer to fig. 6, this application still is provided with drainage device 23 in one side of building wall, drainage device 23 sets up subaerially, including drain pipe 231 and drain valve 232, wherein drain pipe 231 and branch water pipe 21 communicate, drain valve 232 sets up on drain pipe 231 for discharge when opening and deposit water. The spray pipe 22 is inclined toward one side of the drainage device 23, so that the water flow in the spray pipe 22 can be guided out conveniently.

Control module 5 is connected with drain valve 232 for when putting out a fire and draining, control drain valve 232 opens, and the water of depositing in the water pipe 2 is discharged through drain valve 232 and drain pipe 231, has reduced the frozen probability of splitting of water pipe 2 of the frozen probability of the water of depositing in the water pipe 2.

The application provides a building outer wall automatic water spray fire extinguishing system still includes a building outer wall automatic water spray fire extinguishing method, is applied to the host system among the above-mentioned building outer wall automatic water spray fire extinguishing system, refers to figure 8, includes:

step S101, receiving a detection signal of the detection device.

Specifically, the detection signal represents the current state of the building wall, which may be a temperature state or a smoke concentration state; the plurality of detection devices output a plurality of detection signals.

And S102, judging the fire state of the building wall according to the detection signal.

Specifically, when the state detected by one or more detection signals in the plurality of detection signals exceeds a normal range, judging that the wall of the current building is on fire, wherein the fire floor corresponds to the floor where the detection device of the detection signal exceeding the normal range is located; when the state detected by one or more detection signals in the plurality of detection signals is within a normal range, the main control module judges that the corresponding floor is not on fire; therefore, whether the building wall is on fire or not is judged according to the state of the detection signal.

And S103, aiming at each detection signal, if the building wall is determined to have an ignition point according to the detection signal, controlling the spray device at the corresponding position to be started.

Specifically, after the main control module determines an abnormal detection signal, the fire floor corresponding to the fire point is judged according to the detection signal, a control signal is output, and the plurality of spraying devices are controlled to spray on the fire floor.

Wherein, in step S103, the spray device at the corresponding position is controlled to be opened, including:

Specifically, the nearest at least one spraying device comprises a plurality of spraying devices which are controlled by the main control module to spray on the fire floor in the water spraying pipes corresponding to the fire floor after the main control module judges the fire floor; in another kind of mode that can realize, after host system judged the floor of catching a fire, the spray set in the spray pipe that the floor of catching a fire corresponds and the spray set in the spray pipe that the floor more than the floor of catching a fire corresponds sprayed, further improved the effect of spraying and putting out a fire.

In an implementation manner, in step S103, controlling the spray device at the corresponding position to be turned on includes:

step S301 (not shown in the figure), the lowest floor number and the highest floor number of the fire floor in the detection signal are determined, and the lowest floor number of the fire floor is set as the nth floor, and the highest floor number is set as the mth floor.

Specifically, when the plurality of detection signals include one or more abnormal detection signals, the lowest floor number in floors corresponding to the one or more abnormal detection signals is recorded as the nth floor, and the highest floor number is recorded as the mth floor; for example, if the 10 th, 11 th and 12 th floors all catch fire, the lowest floor is the 10 th floor and the highest floor is the 11 th floor.

Step S302 (not shown), selecting spraying devices corresponding to floors from nth floor to mth floor and floors above mth floor to be turned on.

Specifically, when a floor is on fire, the spraying devices of all floors corresponding to the floor on fire are opened, and meanwhile, the spraying devices of the floors above the floor on fire are also opened to spray and extinguish fire on the floor on fire; for example, when all of

floors

10, 11 and 12 are on fire, the sprinkler installed on

floors

10, 11, 12 and floors higher than 12 is controlled to be on, and the fire is extinguished by sprinkling water to the floor on fire.

In an implementation manner, in step S101, receiving a detection signal of a detection device includes: and receiving a temperature signal of the temperature sensor.

In step S102, the method for determining the fire state of the building wall based on the detection signal includes:

and step S21 (not shown), determining a temperature change rate according to the temperature signal to judge the severity of the fire.

Specifically, the main control module determines whether the value of the temperature signal exceeds a preset temperature limit, and if the value of the temperature signal exceeds the preset temperature limit, it is determined that the floor corresponding to the temperature signal is on fire. When the main control module detects that a fire disaster happens to a certain floor, the main control module is triggered to calculate the rate of current temperature increase; the main control module records the parameter value of the temperature signal, determines the parameter value of the temperature signal again after the preset time, determines the rate of temperature change by utilizing the ratio of the variable quantity of the parameter values of the two temperature signals to the preset time, and judges whether the current temperature change rate exceeds the threshold value of the preset temperature change when the temperature is increased so as to judge the severity of the current fire.

Step S22 (not shown), if it is determined that the building wall has a fire point according to the detection signal, determining a temperature change rate according to the temperature signal, and adjusting the spraying flow rate of the corresponding spraying device.

Specifically, when the main control module detects that a fire disaster occurs on a certain floor, when the temperature increase and the temperature change rate in the detection signal output by the detection device exceed the preset temperature change threshold value, it is determined that the fire disaster of the current building wall occurs rapidly, and the building wall needs to be sprayed and extinguished as soon as possible, at the moment, the opening of the spraying valve of the spraying device is controlled to be increased, the rotating speed of the underground pump is controlled to be increased, the opening of the water storage valve is controlled to be increased, the spraying flow of the spraying device is increased, and the automatic water spraying and extinguishing efficiency is improved.

In an implementation mode, for each detection signal, if the building wall is determined to have a fire point according to the detection signal, the alarm module is controlled to give an alarm.

Specifically, the main control module judges the detection signal after receiving the detection signal, and when judging that the current building wall has a fire point, the control alarm module alarms the fire, and when personnel are near the fire, the personnel can extinguish the fire by using a fire extinguisher and other modes according to the situation, and can also evacuate timely to protect life safety according to the situation.

In a practical manner, for each detection signal in step S103, if it is determined that the building wall has an ignition point according to the detection signal, the spray device at the corresponding position is controlled to be turned on, including,

and controlling the water suction pump to be started so as to pump water into the water spraying pipe through the water conveying pipe.

Specifically, when building wall has the ignition, when the retaining valve of control high-order fire water tank was opened, also opened the suction pump, utilize the suction pump with groundwater through the delivery pipe pump income to the spray pipe in, utilize the setting in two water sources, two water sources are as reserve water source each other, when putting out a fire to spraying water on the floor of firing a fire, can adopt the provision at two way water sources, when the water source goes wrong all the way, another way water source can play certain guarantee effect to the water spray effect.

The above method embodiment is implemented based on the system described in the above embodiment, and the implementation manner of the method may refer to the system embodiment.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An automatic water-spraying fire-extinguishing system for building outer walls is characterized by comprising:

the high-level fire-fighting water tank (1) is arranged on the roof of a building and is used for storing water;

the spraying devices (3) are used for spraying the fire floor;

the water pipe is communicated with the high-level fire water tank (1) and the spraying device (3) so as to guide water in the high-level fire water tank (1) to the spraying device (3);

the detection devices (4) are used for detecting the state of the building wall in real time and outputting corresponding detection signals;

the main control module (5) is connected with the plurality of detection devices (4) and the plurality of spraying devices (3) and is used for receiving detection signals of the plurality of detection devices (4), judging the fire state of the building wall according to the detection signals and controlling the spraying devices (3) at corresponding positions to be started when the fire point of the building wall is determined;

wherein each layer is provided with at least one spraying device (3) and at least one detection device (4).

2. The automatic sprinkler system for the external wall of a building according to claim 1, characterized in that the water pipe (2) comprises a branch water pipe (21) and a sprinkler pipe (22) which are communicated;

the high-level fire water tank (1) is communicated with the branch water pipe (21), and the branch water pipe (21) is communicated with the water spray pipe (22);

the water spray pipes (22) are correspondingly arranged on each floor of the building around the building wall;

at least one spraying device (3) arranged on each layer is arranged on the water spraying pipe (22) at equal intervals;

at least one detection device (4) arranged on each floor is embedded on the wall body of the building at equal intervals; for each detection signal, the main control module (5) is specifically configured to judge the fire state of the building wall at the position of the detection device (4) corresponding to the detection signal according to the detection signal, and control at least one spray device (3) closest to the position to be turned on when the building wall at the position is determined to have a fire point.

3. The automatic fire sprinkler system for the external wall of the building as claimed in claim 1 or 2, wherein the detection device (4) comprises a temperature sensor for detecting the temperature state of the building wall in real time and outputting a corresponding temperature signal;

the main control module (5) is connected with the temperature sensors and is specifically used for receiving temperature signals of the temperature sensors, judging the fire state of the building wall according to the temperature signals and controlling the spray devices (3) at corresponding positions to be opened when the fire point of the building wall is determined;

and the main control module (5) is also used for determining the temperature change rate according to the temperature signal so as to judge the severity of the current fire and further adjust the spraying flow of the corresponding spraying device (3).

4. The automatic sprinkler system for the exterior wall of a building according to claim 1 or 2, further comprising: an alarm module (6);

the main control module (5) is connected with the alarm module (6) and is used for controlling the alarm module (6) to give an alarm when the building wall is determined to have a fire point.

5. The automatic sprinkler system for the exterior wall of a building according to claim 1 or 2, further comprising: a water pump (7) and a water supply pipe (71);

the water suction pump (7) is communicated with the plurality of water spray pipes (22) through a water supply pipe (71);

the main control module (5) is connected with the water suction pump (7) and used for controlling the spraying device (3) at the corresponding position to be opened when the building wall is determined to have a fire point, and controlling the water suction pump (7) to be opened so as to pump water into the water spraying pipe (22) through the water conveying pipe (71).

6. An automatic water-spraying fire-extinguishing method for the exterior wall of the building, which is applied to the main control module in the automatic water-spraying fire-extinguishing system for the exterior wall of the building according to any one of claims 1 to 5, and comprises the following steps:

receiving a detection signal of a detection device;

judging the fire state of the building wall according to the detection signal;

7. The automatic water spraying and fire extinguishing method for the exterior wall of the building as claimed in claim 6, wherein the controlling of the opening of the spraying devices at the corresponding positions comprises:

8. The automatic water spraying fire extinguishing method for the external wall of the building according to claim 6,

the receiving detection signal of the detection device comprises:

receiving a temperature signal of a temperature sensor;

the method further comprises the following steps:

9. The automatic water spraying fire extinguishing method for the exterior wall of the building as claimed in claim 6, further comprising:

and aiming at each detection signal, if the building wall is determined to have a fire point according to the detection signal, controlling an alarm module to give an alarm.

10. The automatic fire extinguishing method for external wall of building as claimed in claim 6, wherein said for each detection signal, if it is determined that there is fire on the building wall based on said detection signal, controlling the sprinklers at corresponding positions to be turned on comprises,