Pipeline explosion suppression control system

Abstract

The utility model belongs to the technical field of pipeline explosion suppression control, and particularly relates to a pipeline explosion suppression control system, which comprises a shell, a plurality of groups of detection modules, a plurality of groups of explosion suppressors and a server, the detection modules are used for detecting concentration signals, pressure signals and flow signals of gas in an extraction pipeline, and transmitting the signals to a controller in the shell through an explosion-proof data interface; the controller compares the flame signal through the comparator, generates an explosion suppressor starting control command according to a high level signal of the comparator, and transmits the explosion suppressor starting control command to the explosion suppressor through the explosion-proof data interface to control the explosion suppressor to start; the information is transmitted to the server through the wireless communication module; and the server generates an early warning signal. The explosion suppression control device for the pipeline can solve the problem that an existing explosion suppression control device for the pipeline lacks a real-time feedback mechanism.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pipeline explosion suppression control technical field especially relates to a pipeline explosion suppression control system. BACKGROUND

[0002] In coal mining operation, gas extraction is one of the important links. According to statistics, the existing mine gas extraction volume in the country, the gas extracted from the goaf or the pressure relief area accounts for more than about 80%. Among them, the low-concentration gas extraction volume with a gas concentration of less than 30% accounts for more than 70% of this part, and even a considerable amount of extracted gas concentration is less than 20%. As a flammable and explosive gas, when the concentration of gas is between 5% and 16%, the explosion risk is extremely high, which brings great safety hazards to coal mine gas extraction work.

[0003] The pipeline explosion suppression device plays a key role in the coal mine gas extraction system, which aims to control or eliminate the safety hazards in the low-concentration gas extraction process, so as to ensure the safety of the entire gas extraction system and promote the safe extraction and effective utilization of low-concentration gas. However, the current existing pipeline explosion suppression control device has many shortcomings. Most of these devices are in independent operation mode, lack effective coordination mechanism between each other, and are difficult to achieve hierarchical linkage control. Even a few devices have hierarchical linkage control function, but in actual operation process, there is a lack of real-time feedback mechanism for system operation state, which cannot timely and accurately transmit the key information inside the system to the operator, and thus it is difficult to achieve effective early warning purpose. This makes it difficult for the operator to take targeted measures to prevent and respond to the risk of gas leakage, pressure abnormal fluctuation and other possible explosion-causing situations in time, which seriously restricts the safety and stability improvement of coal mine gas extraction operation, and there is an urgent need to improve and innovate the existing pipeline explosion suppression control system to meet the growing needs of coal mine safety production. UTILITY MODEL CONTENT

[0004] The technical problem solved by the utility model is to provide a pipeline explosion suppression control system to solve the problem of lack of real-time feedback mechanism in the existing pipeline explosion suppression control device.

[0005] The basic scheme provided by the utility model is a pipeline explosion suppression control system, which comprises a shell, a plurality of detection modules, a plurality of explosion suppressors and a server, a control module is arranged inside the shell, an explosion-proof data interface is formed on the shell;

[0006] The control module comprises a controller, a first comparator, a second comparator, a third comparator and a wireless communication module, the explosion-proof data interface is in communication with the controller, the detection module and the explosion suppressor are in communication with the explosion-proof data interface, and the first comparator, the second comparator and the third comparator are electrically connected with the controller; the controller is in communication connection with the server through the wireless communication module;

[0007] The detection module is arranged at the front end of the extraction port of the coal mine gas extraction pipeline, and the explosion suppressor is arranged behind the detection module on the coal mine gas extraction pipeline; the detection module is used for detecting the flame signal, the concentration signal and the flow signal of the gas in the extraction pipeline and transmitting them to the controller through the explosion-proof data interface; the controller transmits the flame signal to the first comparator, the concentration signal to the second comparator and the flow signal to the third comparator, and generates an explosion suppressor starting control command according to the high-level signal of the first comparator and transmits it to multiple explosion suppressors through the explosion-proof data interface at the same time or to a single explosion suppressor respectively to control the starting of the corresponding explosion suppressor; the controller is also used for transmitting the explosion suppressor starting control command to the server through the wireless communication module; the controller is also used for generating a concentration abnormal signal according to the high-level signal of the second comparator and a flow abnormal signal according to the high-level signal of the third comparator and transmitting them to the server through the wireless communication module;

[0008] The server is used for generating a warning signal according to the explosion suppressor starting control command, the concentration abnormal signal and the flow abnormal signal.

[0009] Further, the detection module comprises multiple groups of flame sensors, infrared gas concentration sensors and ultrasonic flow sensors; the multiple groups of flame sensors are arranged at the front end of the extraction port of the extraction pipeline and are in communication with the explosion-proof data interface at the same time; the multiple groups of flame sensors are used for monitoring the flame information in the extraction pipeline in real time and converting the flame information into a flame signal to be transmitted to the controller through the explosion-proof data interface; the infrared gas concentration sensor is used for measuring the concentration of the gas in the extraction pipeline in real time and converting the concentration into a concentration signal to be transmitted to the controller through the explosion-proof data interface; and the ultrasonic flow sensor is used for monitoring the flow value in the extraction pipeline in real time and converting the flow value into a flow signal to be transmitted to the controller through the explosion-proof data interface.

[0010] Further, the server comprises a remote monitoring module, which is used for monitoring and displaying the running state of the explosion suppression control system on different extraction pipelines and issuing control commands to the controllers of the different extraction pipelines.

[0011] Further, the explosion arrester is installed on the extraction pipeline behind the explosion suppressor, the pressure sensor and the explosion arrester are in communication with the explosion-proof data interface, and the fourth comparator is electrically connected with the controller.

[0012] The pressure sensor is used to detect the pressure value on the explosion suppressor and generate a pressure signal transmitted to the controller through the explosion-proof data interface, the controller transmits the pressure signal to the fourth comparator, and generates an explosion arrester starting control command transmitted to the explosion arrester after receiving the high-level signal output by the fourth comparator, and the explosion arrester is used to execute the explosion-proof operation after receiving the explosion arrester starting control command.

[0013] Further, the control module further comprises a local memory, the server comprises a cloud memory, the local memory is electrically connected with the controller, and the controller is further used to store the transmission records of the concentration signal, the flame signal, the pressure signal and the flow signal in the local memory; the server is further used to upload the records of the concentration abnormal signal, the flow abnormal signal, the explosion suppressor starting control command and the explosion arrester starting control command to the cloud memory for storage.

[0014] Further, the shell is externally provided with a display module and a switch key, the display module and the switch key are electrically connected with the controller, the display module is used to display the concentration signal, the pressure signal and the flow signal of the detection module, and the running state of the controller, the running state of the explosion suppressor and the running state of the explosion arrester; the switch key is used to control the on-off state of the controller.

[0015] Further, the alarm module and the emergency start button are further included, the alarm module and the emergency start button are electrically connected with the controller, and the controller is further used to control the alarm module to send an alarm signal after receiving the high-level signals of the first comparator, the second comparator, the third comparator and the fourth comparator, and the emergency start button is used to manually start the alarm module to send an alarm signal.

[0016] Further, the wireless communication module adopts one of 4G, 5G, Bluetooth and WIFI modules.

[0017] Further, the alarm module comprises a buzzer and a warning light.

[0018] The utility model discloses a principle and advantage lies in: in this application, for the existing pipeline explosion suppression control device, when performing explosion suppression operation, there is the problem of lacking real -time feedback, in this scheme, adopt the real -time feedback of inside and outside combination, specifically, first, after arranging detection module, explosion suppressor and explosion -proof device on the coal mine gas extraction pipeline, the detection signal of detection module is received through the controller, compared with the existing detection signal, the detection signal in this scheme includes concentration signal, fire signal pressure signal and flow signal, wherein the fire signal can real -time feedback whether the gas in extraction pipeline appears the flame burst condition before explosion, real -time feedback to the controller, and the controller judges through the comparator again, and the high level signal is output after the abnormality appears, and the controller receives the high level signal and generates explosion suppressor start -up control command, thereby starting the explosion suppressor on the extraction pipeline and spraying explosion suppression medium, and when the pressure signal on the explosion suppressor is too large, it indicates that the explosion suppressor fails to completely extinguish the flame in the extraction pipeline, therefore needs to start the explosion -proof device again and executes explosion -proof operation, to ensure that the flame in the extraction pipeline is completely isolated, for concentration signal and flow signal, the abnormality of sudden increase can feedback that the extraction pipeline appears gas abnormality and leakage etc.

[0019] Meanwhile, when performing control, the controller in this scheme can receive the signal transmitted by multiple groups of flame sensors on one hand, and can control the start of the explosion suppressor or control the start of the explosion suppressor simultaneously according to the received signal on the other hand, so as to improve the accuracy of the explosion suppressor in performing explosion suppression operation.

[0020] And in the above operation process, on one hand, the alarm model is set to alarm the abnormal condition, and on the other hand, the operation record generated is also stored, which is convenient for comparison when subsequent abnormal conditions are traced, and plays the role of external real -time feedback. ACCURACY

[0021] Figure 1 It is the function block diagram of the utility model embodiment;

[0022] Figure 2 It is the control logic diagram of the controller of the utility model embodiment to explosion suppressor. CONCRETE IMPLEMENTATION

[0023] The following is further explained in detail through concrete implementation:

[0024] Embodiment one:

[0025] Embodiment one basically like the attached Figure 1The application discloses a pipeline explosion suppression control system, which comprises a shell, a plurality of detection modules, a plurality of explosion suppressors and a server.

[0026] The plurality of detection modules and the plurality of explosion suppressors are arranged on a coal mine gas extraction pipeline, specifically, the detection modules are arranged at the front end of an extraction port of the extraction pipeline, specifically, at a distance of 3-5 m from the extraction port, and the explosion suppressors are arranged at a distance of 30-60 m from the arrangement position of the detection modules; meanwhile, the detection modules and the explosion suppressors are in communication with the explosion-proof data interface, and the explosion-proof data interface is connected with the control module, specifically, the control module comprises a controller, a first comparator, a second comparator, a third comparator, a wireless communication module and a local storage, therefore, the explosion-proof data interface is in communication with the controller, the first comparator, the second comparator, the third comparator and the local storage are also electrically connected with the controller, and the display module, the switch key, the emergency start button and the alarm module are also electrically connected with the controller.

[0027] The detection module comprises a flame sensor, an infrared gas concentration sensor and an ultrasonic flow sensor in the application, wherein the flame sensor adopts an infrared flame sensor, which can utilize the characteristics that infrared spectra generated when different substances burn have certain characteristics, and the infrared flame sensor identifies the flame by detecting a specific infrared wave band;

[0028] The infrared gas concentration sensor can utilize the absorption characteristics of gas to specific wavelength infrared rays, determine the gas concentration by detecting the attenuation degree of infrared rays, and the detection precision can reach ±0.1%, the concentration detection and data feedback can be completed in a short time, therefore, the infrared gas concentration sensor is used to measure the gas concentration in the extraction pipeline in real time, and converts the gas concentration into a concentration signal, which is transmitted to the controller through the explosion-proof data interface;

[0029] The ultrasonic flow sensor can utilize the propagation speed of ultrasonic waves in gas to determine the flow, has high measurement precision, and can feed back the gas flow data in real time, therefore, the ultrasonic flow sensor is used to monitor the flow value in the extraction pipeline in real time, and converts the flow value into a flow signal which is transmitted to the controller through the explosion-proof data interface.

[0030] After the controller receives the above-mentioned concentration signal, pressure signal and flow signal, the controller transmits the signals to the first comparator, the second comparator and the third comparator for comparison, specifically, the first comparator is provided with a detection threshold value of the flame, when the flame information is received, it indicates that the flame appears in the extraction pipeline, and then the first comparator directly outputs a high-level signal.

[0031] The second comparator is provided with a set concentration electric signal threshold value, when the received concentration signal does not exceed the set concentration electric signal threshold value, a low level signal is outputted; when the received concentration signal exceeds the set concentration electric signal threshold value, a high level signal is outputted, thus the outputted high level signal represents that the gas concentration in the extraction pipeline is abnormal in the present scheme.

[0032] The third comparator is provided with a set flow electric signal threshold value, when the received flow signal does not exceed the set flow electric signal threshold value, a low level signal is outputted; when the received pressure signal exceeds the set flow electric signal threshold value, a high level signal is outputted, thus the outputted high level signal represents that the gas flow in the extraction pipeline is abnormal, for example, leakage.

[0033] When the controller receives the high level signal transmitted by the first comparator, a suppressor starting control command is generated and transmitted to the suppressor to control the starting of the suppressor, as shown in the figure, in the present embodiment, the suppressor starting control command generated by the controller can be transmitted to multiple groups of suppressors to control the simultaneous starting of the multiple groups of suppressors, and can also be transmitted to a single suppressor or several suppressors to realize the individual starting of the single suppressor; after the starting of the suppressor, the explosion suppression medium is sprayed to suppress the explosion risk of the gas in the extraction pipeline; the explosion-proof data interface is used for the input of external detection module information, the output of control command and the connection of other communication. Figure 2

[0034] When the controller receives the high level signal transmitted by the second comparator, a concentration abnormality signal is generated and transmitted to the server through the wireless communication module to give a warning to remind the user that the gas concentration in the extraction pipeline is abnormal;

[0035] As for the high level signal transmitted by the third comparator, the controller transmits it to the server through the wireless communication module to give a warning to remind the user that the gas flow in the extraction pipeline is abnormal, at the same time, the generation, transmission and execution of the suppressor starting control command and the generation, transmission and execution of the explosion-proof device starting control command are all transmitted to the server through the wireless communication module.

[0036] ​In addition, the pressure sensor is installed on the explosion suppressor, and specifically adopts a piezoresistive pressure sensor, the control module further includes a fourth comparator, and an explosion isolation device is further installed on the extraction pipeline behind the explosion suppressor, the explosion isolation device and the pressure sensor are in communication with the explosion-proof data interface, and the fourth comparator is electrically connected with the controller, wherein when a larger shock wave still occurs during the spraying of the explosion suppression medium, the piezoresistive pressure sensor can detect the slight pressure fluctuation in the explosion suppressor, convert the pressure value into an electrical signal, and feed back the electrical signal to the controller, and once the pressure abnormally rises or fluctuates abnormally, the explosion suppression is unsuccessful, therefore, the piezoresistive pressure sensor transmits the detected pressure signal to the controller through the explosion-proof data interface, the controller transmits the pressure signal to the fourth comparator, and the fourth comparator is provided with an electrical signal threshold value of the pressure signal, when the received pressure signal does not exceed the set pressure electrical signal threshold value, a low-level signal is output, and when the received pressure signal exceeds the set pressure electrical signal threshold value, a high-level signal is output, therefore, the output high-level signal represents that a larger explosion shock wave still exists in the explosion suppressor in the scheme, and the controller generates an explosion isolation device starting control command according to the high-level signal and transmits the control command to the explosion isolation device, so that the explosion isolation device starts to operate according to the explosion isolation device starting control command to implement the explosion isolation operation.

[0037] The local storage stores the operation process record of the controller, so that the user can view the operation process record of the controller.

[0038] The server also stores the operation process record of the controller by setting a cloud storage, so that the user can check the operation record of the pipeline explosion suppression control system on the server.

[0039] In addition, the display module is used to display the concentration signal, the flame signal, the pressure signal and the flow signal of the detection module, and display the running state of the controller, the running state of the explosion suppressor and the running state of the explosion isolation device, the switch button is used to control the on-off state of the controller, and the controller is further used to control the alarm module to send an alarm signal after receiving the high-level signals of the first comparator, the second comparator, the third comparator and the fourth comparator, and the emergency start button is used to manually start the alarm module to send an alarm signal.

[0040] In the embodiment, the controller adopts a micro control unit (MCU), the display module adopts an LED display screen, the wireless communication module adopts one of a 4G module, a 5G module, a Bluetooth module and a WIFI module, specifically a 5G module, and the alarm module adopts a buzzer and a warning light to realize sound and light alarm.

[0041] Embodiment two

[0042] The difference between the embodiment two and the embodiment one is that, in the embodiment two, the cascade control between the controllers of each extraction pipeline can be realized, specifically, the remote monitoring module is included in the server, the remote monitoring module establishes the communication link with the controllers in the explosion suppression control system on each extraction pipeline through the wireless communication module, the remote monitoring module can transmit the control command to the controller on one extraction pipeline, or can transmit the control command to the controllers on multiple extraction pipelines; for example, the controllers on different extraction pipelines are separately controlled to generate the explosion suppressor starting control command, or the controllers on multiple extraction pipelines are simultaneously controlled to generate the explosion suppressor starting control command.

[0043] Meanwhile, the controller in the explosion suppression control system on each extraction pipeline also establishes the communication link with the controllers in the explosion suppression control systems on the rest of the extraction pipelines through the wireless communication module, for example, taking one extraction pipeline and three extraction pipelines as an example, the communication between the controller on one extraction pipeline and the controllers on the rest of the three extraction pipelines is realized through the wireless communication module, so that the controller on one extraction pipeline can separately control the execution and operation of the controllers on the other three extraction pipelines, or simultaneously control the execution and operation of the controllers on the other three extraction pipelines.

[0044] The above is only the embodiment of the utility model, and the specific structure and characteristics of the scheme and other common knowledge are not described in detail, the ordinary skilled in the art knows all the ordinary technical knowledge in the technical field of the utility model before the application date or the priority date, can know all the prior art in the field, and has the ability to apply the conventional experimental means before the date, the ordinary skilled in the art can improve and implement the scheme under the inspiration given by the present application, combining with the ability of the applicant, some typical known structures or known methods should not become the obstacle for the ordinary skilled in the art to implement the present application. It should be pointed out that, for the skilled in the art, without departing from the structure of the utility model, a number of modifications and improvements can be made, which should also be regarded as the protection scope of the utility model, which will not affect the effect and practicality of the utility model. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A duct explosion suppression control system, characterized by: Including shell, multiple groups of detection modules, multiple groups of explosion suppressors and server, the inside of the shell is arranged control module, the shell is opened explosion-proof data interface; The control module includes a controller, a first comparator, a second comparator, a third comparator and a wireless communication module, the explosion-proof data interface is in communication with the controller, the detection module and the explosion suppressor are in communication with the explosion-proof data interface, the first comparator, the second comparator and the third comparator are electrically connected with the controller; the controller is connected with the server through the wireless communication module; The detection module is arranged in front of the extraction port of the coal mine gas extraction pipeline, the explosion suppressor is arranged on the extraction pipeline behind the detection module, the detection module is used for detecting the flame signal, concentration signal and flow signal of the gas in the extraction pipeline, and transmitting to the controller through the explosion-proof data interface, the controller transmits the flame signal to the first comparator, the concentration signal to the second comparator, and the flow signal to the third comparator, and generates an explosion suppressor start control command according to the high level signal of the first comparator and transmits it to multiple explosion suppressors through the explosion-proof data interface at the same time, or transmits it to a single explosion suppressor respectively, to control the start of the corresponding explosion suppressor; the controller is also used for transmitting the explosion suppressor start control command to the server through the wireless communication module; the controller is also used for generating concentration abnormal signal according to the high level signal of the second comparator and flow abnormal signal according to the high level signal of the third comparator, and transmitting them to the server through the wireless communication module; The server is used for generating early warning signal according to the explosion suppressor start control command, concentration abnormal signal and flow abnormal signal.

2. A ducted explosion suppression control system according to claim 1, wherein: The detection module includes multiple groups of flame sensors, infrared gas concentration sensors and ultrasonic flow sensors, the multiple groups of flame sensors are arranged in front of the extraction port of the extraction pipeline and are in communication with the explosion-proof data interface at the same time, the multiple groups of flame sensors are used for real-time monitoring of flame information in the extraction pipeline and converting the flame information into flame signals and transmitting them to the controller through the explosion-proof data interface; the infrared gas concentration sensor is used for real-time measurement of the concentration of gas in the extraction pipeline and converting the concentration into a concentration signal and transmitting it to the controller through the explosion-proof data interface; the ultrasonic flow sensor is used for real-time monitoring of the flow value in the extraction pipeline and converting the flow value into a flow signal and transmitting it to the controller through the explosion-proof data interface.

3. A ducted explosion suppression control system according to claim 2, wherein: The server includes a remote monitoring module, which is used for monitoring and displaying the running state of the explosion suppression control system on different extraction pipelines, and issuing control commands to the controllers of different extraction pipelines.

4. A ducted explosion suppression control system according to claim 3, wherein: It also includes an explosion-proof device, the detection module further includes a pressure sensor, the control module further includes a fourth comparator, the pressure sensor is arranged on the explosion suppressor, the explosion-proof device is installed behind the explosion suppressor on the extraction pipeline, the pressure sensor and the explosion-proof device are in communication with the explosion-proof data interface, and the fourth comparator is electrically connected with the controller; The pressure sensor is used for detecting the pressure value on the explosion suppressor and generating a pressure signal transmitted to the controller through the explosion-proof data interface. The controller transmits the pressure signal to the fourth comparator and generates an explosion suppressor start control command after receiving a high-level signal output by the fourth comparator, and transmits the command to the explosion suppressor. The explosion suppressor is used to execute the explosion-proof operation after receiving the explosion suppressor start command.

5. A ducted explosion suppression control system according to claim 4, wherein: The control module further comprises a local memory, and the server comprises a cloud memory. The local memory is electrically connected to the controller. The controller is further used for storing the transmission records of the concentration signal, the flame signal, the pressure signal and the flow signal in the local memory. The server is further used for uploading the records of the concentration anomaly signal, the flow anomaly signal, the explosion suppressor start control command and the explosion suppressor start control command to the cloud memory for storage.

6. A ducted explosion suppression control system according to claim 5, wherein: The shell is externally provided with a display module and a switch key. The display module and the switch key are electrically connected to the controller. The display module is used for displaying the concentration signal, the pressure signal and the flow signal of the detection module, and displaying the running state of the controller, the running state of the explosion suppressor and the running state of the explosion suppressor. The switch key is used for controlling the on-off state of the controller.

7. A ducted explosion suppression control system according to claim 6, wherein: Further comprising an alarm module and an emergency start button. The alarm module and the emergency start button are electrically connected to the controller. The controller is further used for controlling the alarm module to send an alarm signal after receiving a high-level signal from the first comparator, the second comparator, the third comparator and the fourth comparator. The emergency start button is used for manually starting the alarm module to send an alarm signal.

8. A ducted explosion suppression control system according to claim 7, wherein: The wireless communication module adopts one of 4G, 5G, Bluetooth and WIFI modules.

9. A ducted explosion suppression control system according to claim 7, wherein: The alarm module comprises a buzzer and a warning light.

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