阅读说明：本技术 一种电缆管道灭火方法 (Cable pipeline fire extinguishing method ) 是由 吕新良 张伟生 李晓蕾 关文起 曲志龙 晏涛 王军勃 张钦 姜明山 梅小伟 于 2020-04-14 设计创作，主要内容包括：本发明公开了一种电缆管道灭火方法,包括以下步骤：步骤一：通过粉尘传感器检测电缆管道中粉尘浓度,粉尘传感器用以感受粉尘浓度,以生成对应的粉尘浓度信号,然后将信号值传输给控制器,控制器将信号传输给吹风模块,吹风模块设置在电缆管道一端。本发明通过粉尘传感器用以感受粉尘浓度,以生成对应的粉尘浓度信号,然后通过控制器将信号传输给吹风模块,吹风模块工作可以降低管道内的粉尘浓度,同时通过火花浓度传感器用于检测火花浓度,将信号传输给控制器,控制器控制灭火器对电缆管道内的火花进行灭火,通过两步进行灭火,提高了灭火的效率。(The invention discloses a cable pipeline fire extinguishing method, which comprises the following steps: the method comprises the following steps: through dust sensor detection cable duct in dust concentration, dust sensor is used for feeling dust concentration to generate the dust concentration signal that corresponds, then give the controller with signal value transmission, the controller gives the module of blowing with signal transmission, the module setting of blowing is in cable duct one end. The dust sensor is used for sensing the dust concentration to generate a corresponding dust concentration signal, the controller is used for transmitting the signal to the blowing module, the blowing module can reduce the dust concentration in the pipeline when working, the spark concentration sensor is used for detecting the spark concentration and transmitting the signal to the controller, the controller controls the fire extinguisher to extinguish the spark in the cable pipeline, and the two steps are used for extinguishing the fire, so that the fire extinguishing efficiency is improved.)

1. A cable duct fire extinguishing method, characterized by comprising the steps of:

The method comprises the following steps: the dust concentration in the cable duct is detected through a dust sensor, the dust sensor is used for sensing the dust concentration to generate a corresponding dust concentration signal, then a signal value is transmitted to a controller, the controller transmits the signal to a blowing module, and the blowing module is arranged at one end of the cable duct;

step two: a fire extinguisher is arranged in the cable pipeline, the fire extinguisher can spray fire extinguishing paint, and the controller controls the fire extinguisher to extinguish fire;

step three: preparing a primary material: adding 30-40 parts of modified wollastonite into 100 parts of sodium chloride solution, and then adding 3-7 parts of acidic buffer to adjust the pH of the solution to 4.0 to obtain a primary material;

step four: preparation of the fire-extinguishing coating: and (3) sending the initial material obtained in the step three into a magnetic stirrer for stirring at the stirring speed of 200-500r/min for 10-20min at the stirring temperature of 75-85 ℃, then adding the silicon dioxide microsphere emulsion, and increasing the rotation speed to 800-1200r/min for 3-7h to obtain the fire-extinguishing coating.

2. The fire extinguishing method for the cable duct according to claim 1, wherein the dust concentration signal comprises a safety threshold, and when the data detected by the dust sensor is greater than the safety threshold, the signal is transmitted to the controller, and the controller controls the blowing module to operate.

3. A method of extinguishing a fire in a raceway according to claim 1, wherein a spark concentration sensor is further provided in the raceway.

4. A fire extinguishing method for cable ducts according to claim 1 or 3, characterized in that the spark concentration sensor is used to detect the concentration of sparks, and when the concentration of sparks is higher than a safe concentration, then a signal is transmitted to the controller, and the controller controls the fire extinguisher to extinguish sparks in the cable duct.

5. The fire extinguishing method for cable ducts according to claim 1, wherein the modification method of the modified wollastonite is as follows: adding wollastonite into a calcium carbonate solution, taking out, carrying out heating and drying treatment at 70-80 ℃, then sending into a silane solution for soaking treatment at 65 ℃ for 1-2h, then blending with a flame retardant, and carrying out thermal activation treatment to obtain the modified wollastonite.

6. The fire extinguishing method for the cable duct according to claim 5, wherein the fire retardant is compounded by sodium tungstate and potassium fluotitanate in a ratio of 2: 1.

7. The fire extinguishing method for cable duct according to claim 5, wherein the rotation speed of the blending process is 500-1000r/min, and the blending time is 40-50 min.

8. The fire extinguishing method for cable ducts according to claim 7, wherein the blending process is performed at a rotation speed of 750r/min for a blending time of 45 min.

9. The fire extinguishing method for cable ducts according to claim 5, wherein the specific conditions of the thermal activation process are as follows: activating at 80-90 deg.C for 20-30min, cooling to 40-50 deg.C, activating for 10-20min, and cooling to room temperature.

10. The fire extinguishing method for cable ducts according to claim 1, wherein said acidic buffer is acetic acid-sodium acetate.

Technical Field

The invention relates to the technical field of cable pipeline fire extinguishing, in particular to a cable pipeline fire extinguishing method.

Background

With the rapid development of urban economy and the improvement of urban life quality, underground cables become a trend of a new era in a new century. It has already played a useful role in beautifying the urban environment and promoting the urban function, and produced completely new realistic effect. The underground cable can reflect the high level of the comprehensive economic development of the urban society and can measure the high level of the modern scientific development of the urban society, and the successful application of the underground cable not only solves the problems brought by the urban overhead cable, saves a large amount of space, but also beautifies the urban space environment. The cable duct is used for putting through a pipeline building of cable, can protect the cable, can play functions such as resistance to compression, waterproof and corrosion-resistant to a certain extent. Current cable duct is mostly PE or PVC pipeline, mostly for having the integral type building piece of a plurality of lumens.

If the dust appears in the existing cable duct, the dust concentration is greater than the set dust, the ignition is easy to occur, meanwhile, the cable duct is made of a PVC (polyvinyl chloride) pipeline, the fire is not easy to extinguish after the fire is ignited, and the fire extinguishing efficiency is reduced.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides a cable pipeline fire extinguishing method.

The technical scheme is as follows: in order to achieve the purpose, the invention provides the following technical scheme:

a cable duct fire extinguishing method comprising the steps of:

the method comprises the following steps: the dust concentration in the cable duct is detected through a dust sensor, the dust sensor is used for sensing the dust concentration to generate a corresponding dust concentration signal, then a signal value is transmitted to a controller, the controller transmits the signal to a blowing module, and the blowing module is arranged at one end of the cable duct;

step two: a fire extinguisher is arranged in the cable pipeline, the fire extinguisher can spray fire extinguishing paint, and the controller controls the fire extinguisher to extinguish fire;

step three: preparing a primary material: adding 30-40 parts of modified wollastonite into 100 parts of sodium chloride solution, and then adding 3-7 parts of acidic buffer to adjust the pH of the solution to 4.0 to obtain a primary material;

step four: preparation of the fire-extinguishing coating: and (3) sending the initial material obtained in the step three into a magnetic stirrer for stirring at the stirring speed of 200-500r/min for 10-20min at the stirring temperature of 75-85 ℃, then adding the silicon dioxide microsphere emulsion, and increasing the rotation speed to 800-1200r/min for 3-7h to obtain the fire-extinguishing coating.

Preferably, the dust concentration signal comprises a safety threshold, and when the data detected by the dust sensor is greater than the safety threshold, the signal is transmitted to the controller, and the controller controls the blowing module to work.

Preferably, a spark concentration sensor is further arranged in the cable duct.

Preferably, the spark concentration sensor is used for detecting the spark concentration, and when the spark concentration is higher than the safe concentration, a signal is transmitted to the controller, and the controller controls the fire extinguisher to extinguish the spark in the cable pipeline.

Preferably, the modification method of the modified wollastonite is as follows: adding wollastonite into a calcium carbonate solution, taking out, carrying out heating and drying treatment at 70-80 ℃, then sending into a silane solution for soaking treatment at 65 ℃ for 1-2h, then blending with a flame retardant, and carrying out thermal activation treatment to obtain the modified wollastonite.

Preferably, the flame retardant is compounded by sodium tungstate and potassium fluotitanate in a ratio of 2: 1.

Preferably, the rotation speed of the blending treatment is 500-1000r/min, and the blending time is 40-50 min.

Preferably, the rotation speed of the blending treatment is 750r/min, and the blending time is 45 min.

Preferably, the specific conditions of the thermal activation treatment are as follows: activating at 80-90 deg.C for 20-30min, cooling to 40-50 deg.C, activating for 10-20min, and cooling to room temperature.

Preferably, the acidic buffer is acetic acid-sodium acetate.

Has the advantages that: the invention has the following beneficial effects:

the fire extinguishing coating is prepared by adopting the initial material prepared from the silica microsphere emulsion, the initial material prepared from the modified wollastonite and the sodium chloride solution can play a role in inhibiting activation, and meanwhile, the silica microsphere emulsion has a high specific surface area, can be attached to sparks, and improves the flame retardant effect.

Drawings

Fig. 1 is a system block diagram of the cable duct fire extinguishing method of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Example 1.

As shown in fig. 1, the fire extinguishing method for cable duct of the present embodiment includes the following steps:

the method comprises the following steps: the dust concentration in the cable duct 4 is detected through the dust sensor 1, the dust sensor 1 is used for sensing the dust concentration to generate a corresponding dust concentration signal, then a signal value is transmitted to the controller 2, the controller 2 transmits the signal to the blowing module 3, and the blowing module 3 is arranged at one end of the cable duct 4;

Step two: a fire extinguisher 5 is arranged in the cable pipeline 4, the fire extinguisher 5 can spray fire extinguishing paint, and the controller 2 realizes fire extinguishing by controlling the fire extinguisher 5;

step three: preparing a primary material: adding 30 parts of modified wollastonite into 100 parts of sodium chloride solution, and then adding 3 parts of acidic buffer to adjust the pH of the solution to 4.0 to obtain a primary material;

step four: preparation of the fire-extinguishing coating: and (3) feeding the initial material obtained in the third step into a magnetic stirrer for stirring at the stirring speed of 200r/min for 10min at the stirring temperature of 75 ℃, then adding the silicon dioxide microsphere emulsion, and increasing the rotation speed to 800r/min for 3h to obtain the fire-extinguishing coating.

The dust concentration signal of this embodiment includes safe threshold, and when the data that dust sensor 1 detected were greater than safe threshold, give controller 2 with signal transmission, controller 2 control module 3 of blowing carries out work.

The cable duct 4 of the present embodiment is also provided with a spark concentration sensor 6.

The spark concentration sensor 6 of the present embodiment is used for detecting the spark concentration, and when the spark concentration is greater than the safe concentration, and then transmits a signal to the controller 2, the controller 2 controls the fire extinguisher 5 to extinguish the spark in the cable duct 4.

The modification method of the modified wollastonite in this example is as follows: adding wollastonite into a calcium carbonate solution, taking out, carrying out heating and drying treatment at 70 ℃, then sending into a silane solution for soaking treatment at the soaking temperature of 65 ℃ for 1h, then blending with a flame retardant, and carrying out thermal activation treatment to obtain the modified wollastonite.

The flame retardant of the embodiment is compounded by sodium tungstate and potassium fluotitanate in a ratio of 2: 1.

The rotation speed of the blending treatment in this example was 50r/min, and the blending time was 40 min.

The specific conditions of the thermal activation treatment in this example were: activating at 80 deg.C for 20min, cooling to 40 deg.C, activating for 10min, and cooling to room temperature.

The acidic buffer in this example was acetic acid-sodium acetate.

Example 2.

As shown in fig. 1, the fire extinguishing method for cable duct of the present embodiment includes the following steps:

the method comprises the following steps: the dust concentration in the cable duct 4 is detected through the dust sensor 1, the dust sensor 1 is used for sensing the dust concentration to generate a corresponding dust concentration signal, then a signal value is transmitted to the controller 2, the controller 2 transmits the signal to the blowing module 3, and the blowing module 3 is arranged at one end of the cable duct 4;

Step two: a fire extinguisher 5 is arranged in the cable pipeline 4, the fire extinguisher 5 can spray fire extinguishing paint, and the controller 2 realizes fire extinguishing by controlling the fire extinguisher 5;

step three: preparing a primary material: adding 40 parts of modified wollastonite into 100 parts of sodium chloride solution, and then adding 7 parts of acidic buffer to adjust the pH of the solution to 4.0 to obtain a primary material;

step four: preparation of the fire-extinguishing coating: and (3) feeding the initial material obtained in the step three into a magnetic stirrer for stirring at the stirring speed of 500r/min for 20min at the stirring temperature of 85 ℃, then adding the silicon dioxide microsphere emulsion, and increasing the rotation speed to 1200r/min for stirring for 7h to obtain the fire-extinguishing coating.

The dust concentration signal of this embodiment includes safe threshold, and when the data that dust sensor 1 detected were greater than safe threshold, give controller 2 with signal transmission, controller 2 control module 3 of blowing carries out work.

The cable duct 4 of the present embodiment is also provided with a spark concentration sensor 6.

The spark concentration sensor 6 of the present embodiment is used for detecting the spark concentration, and when the spark concentration is greater than the safe concentration, and then transmits a signal to the controller 2, the controller 2 controls the fire extinguisher 5 to extinguish the spark in the cable duct 4.

The modification method of the modified wollastonite in this example is as follows: adding wollastonite into a calcium carbonate solution, taking out, carrying out heating and drying treatment at 80 ℃, then sending into a silane solution for soaking treatment at the soaking temperature of 65 ℃ for 2 hours, then blending with a flame retardant, and carrying out thermal activation treatment to obtain the modified wollastonite.

The flame retardant of the embodiment is compounded by sodium tungstate and potassium fluotitanate in a ratio of 2: 1.

The rotation speed of the blending treatment in this example is 1000r/min, and the blending time is 50 min.

The specific conditions of the thermal activation treatment in this example were: activating at 90 deg.C for 30min, cooling to 50 deg.C, activating for 20min, and cooling to room temperature.

The acidic buffer in this example was acetic acid-sodium acetate.

Example 3.

As shown in fig. 1, the fire extinguishing method for cable duct of the present embodiment includes the following steps:

the method comprises the following steps: the dust concentration in the cable duct 4 is detected through the dust sensor 1, the dust sensor 1 is used for sensing the dust concentration to generate a corresponding dust concentration signal, then a signal value is transmitted to the controller 2, the controller 2 transmits the signal to the blowing module 3, and the blowing module 3 is arranged at one end of the cable duct 4;

Step two: a fire extinguisher 5 is arranged in the cable pipeline 4, the fire extinguisher 5 can spray fire extinguishing paint, and the controller 2 realizes fire extinguishing by controlling the fire extinguisher 5;

step three: preparing a primary material: adding 35 parts of modified wollastonite into 100 parts of sodium chloride solution, and then adding 5 parts of acidic buffer to adjust the pH of the solution to 4.0 to obtain a primary material;

step four: preparation of the fire-extinguishing coating: and (3) feeding the initial material obtained in the step three into a magnetic stirrer for stirring, wherein the stirring speed is 350r/min, the stirring time is 15min, the stirring temperature is 80 ℃, then adding the silicon dioxide microsphere emulsion, increasing the speed to 1000r/min, and stirring for 5h to obtain the fire-extinguishing coating.

The dust concentration signal of this embodiment includes safe threshold, and when the data that dust sensor 1 detected were greater than safe threshold, give controller 2 with signal transmission, controller 2 control module 3 of blowing carries out work.

The cable duct 4 of the present embodiment is also provided with a spark concentration sensor 6.

The spark concentration sensor 6 of the present embodiment is used for detecting the spark concentration, and when the spark concentration is greater than the safe concentration, and then transmits a signal to the controller 2, the controller 2 controls the fire extinguisher 5 to extinguish the spark in the cable duct 4.

The modification method of the modified wollastonite in this example is as follows: adding wollastonite into a calcium carbonate solution, taking out, carrying out heating and drying treatment at 75 ℃, then sending into a silane solution for soaking treatment at the soaking temperature of 65 ℃ for 1.5h, then blending with a flame retardant, and carrying out thermal activation treatment to obtain the modified wollastonite.

The flame retardant of the embodiment is compounded by sodium tungstate and potassium fluotitanate in a ratio of 2: 1.

The rotation speed of the blending treatment in this example was 750r/min, and the blending time was 45 min.

The specific conditions of the thermal activation treatment in this example were: activating at 85 deg.C for 25min, cooling to 45 deg.C, activating for 15min, and cooling to room temperature.

The acidic buffer in this example was acetic acid-sodium acetate.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.