CN210324495U - Spark auto-induction discernment sensor - Google Patents

Abstract

The utility model relates to a spark auto-induction discernment sensor belongs to gaseous dust explosion prevention and cure field. The sensor comprises an electrical structure and a shell, wherein the electrical structure is arranged in the shell and consists of a micro-processing system, an output module, an infrared acquisition amplifying circuit, a pollution detection module, a communication module and a power supply module; the shell comprises an automatic cleaning interface, a shell main body, a photosensitive window and a flange. The utility model discloses the installation is applied to probably producing the spark and can arouse dangerous production place, can respond to fast, discernment, judge really there is dangerous spark, for preventing to arouse the burning explosion accident, plays good prevention effect.

Description

Spark auto-induction discernment sensor

Technical Field

The utility model belongs to gaseous dust explosion prevention and cure field relates to a spark auto-induction discernment sensor.

Background

The spark is different from combustion flame or explosion flame, such as static spark, and the spark is generated in the polishing, grinding and other production processes of dust-related enterprises, the friction spark is generated between the dust conveying pipeline or the powder movement and the pipeline, and the spark is generated by the friction and collision of different types of dust in the dust moving space. Sparks are ignition sources for generating fire and explosion disasters, and when other fire and explosion conditions are met, the sparks can cause fire or explosion, and disaster damage is caused.

At present, the flame detection is performed by mature instruments, but dangerous sparks can not be effectively identified and judged, particularly, the sparks in certain production places are high in moving speed, for example, the sparks generated by an explosion-related dust removal system can reach 30m/s, and the sparks are difficult to detect and capture. Meanwhile, the generated sparks can not necessarily cause danger, and the sparks can be used as ignition sources only when having certain energy to cause combustion and explosion. Therefore, there is a need for a device that can quickly and reliably identify and determine sparks at hazardous locations where sparks may occur.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a spark auto-induction discerns sensor is applied to and probably produces the spark and can arouse dangerous production place, can respond to fast, discernment, judge really dangerous spark, for preventing to arouse the explosion accident of burning, plays good prevention effect. The method has important practical significance for improving the safety of the operation process with the danger of combustion and explosion and protecting the lives and properties of people from being lost.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a spark auto-induction recognition sensor comprises an electrical structure and a shell, wherein the electrical structure is arranged in the shell and comprises a micro-processing system, an output module, an infrared acquisition and amplification circuit, a pollution detection module, a communication module, a power supply module and the like;

the infrared acquisition amplifying circuit is used for capturing infrared light released from sparks, sensing the intensity of the infrared light, converting acquired optical signals into analog electric signals, and then amplifying the analog electric signals and converting the analog electric signals into digital signals in an analog-to-digital mode;

the micro-processing system is used for analyzing and calculating the digital signals output by the infrared acquisition amplifying circuit, then sending the analysis and calculation results to the output module and the communication module, and respectively transmitting information and alarming to the outside of the sensor; the circuit is also used for self-checking the whole circuit structure, finding faults and processing dust accumulation signals of a photosensitive window collected by the pollution detection module;

the output module is used for outputting spark information calculated and analyzed by the micro-processing system and transmitting the information to the outside of the sensor;

the communication module is used for communicating with the alarm system and transmitting alarm information calculated by the micro-processing system and fault information of the whole circuit structure self-checking in time;

the pollution detection module is used for detecting dust accumulated on the photosensitive window;

and the power supply module is used for supplying power to the whole circuit part of the sensor by an external power supply.

Further, the shell comprises an automatic cleaning interface (1), a shell main body (2), a light-sensitive window (3) and a flange (4);

the flange (4) is mainly used for mounting and connecting in a dangerous place or equipment, a short connecting pipe is arranged between the flange and the photosensitive window, and the short connecting pipe is arranged to accurately identify sparks passing through the sensor and prevent interference of external bad information;

the automatic cleaning interface (1) is used for being connected into an automatic cleaning system, and when dust accumulation influences detection sparks at a photosensitive window, the window is automatically cleaned;

the housing body (2) is used for placing an electrical structure;

the light sensing window (3) is used for the infrared light sensing element to identify and sense sparks passing through the flange.

Furthermore, the flange with connect with the short tube between the sensitization window for prevent the interference of external bad information, thereby improve the degree of accuracy that the sensor discerned the spark.

Further, the shell main body (2) is of a square structure.

Furthermore, the shell main body is made of metal and is not made of aluminum alloy, and the protection grade is required to reach IP66 and above.

Furthermore, the induction window is made of glass, and is made of reinforced quartz glass or sapphire.

The beneficial effects of the utility model reside in that: the utility model discloses the installation is applied to probably producing the spark and can arouse dangerous production place, can respond to fast, discernment, judge really there is dangerous spark, for preventing to arouse the burning explosion accident, plays good prevention effect. The method has important practical significance for improving the safety of the operation process with the danger of combustion and explosion and protecting the lives and properties of people from being lost.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.

Drawings

For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a diagram of a spark auto-discrimination sensor configuration;

fig. 2 is a schematic diagram of the electrical structure connection according to the present invention;

FIG. 3 is a schematic diagram of the electrical structure connection of the sensor in the embodiment.

Reference numerals: 1-automatic cleaning interface, 2-shell main body, 3-photosensitive window and 4-flange.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Referring to fig. 1 to 3, fig. 1 is a structural diagram of an automatic spark identification sensor, as shown in fig. 1, the sensor includes an electrical structure and a housing, and the electrical structure is installed inside the housing. The shell mainly comprises an automatic cleaning interface 1, a shell main body 2, a photosensitive window 3, a flange 4 and the like. As shown in fig. 2, the electrical structure mainly comprises a micro-processing system, an output module, an infrared acquisition and amplification circuit, a pollution detection module, a communication module, a power module and the like.

The automatic spark identification sensor flange 4 is mainly used for installation and connection in dangerous places or equipment, a short connecting pipe is arranged between the automatic spark identification sensor flange and the photosensitive window 3, and the short connecting pipe is arranged to accurately identify sparks passing through the sensor and prevent interference of external bad information; the automatic cleaning interface 1 is used for accessing an automatic cleaning system, and when dust accumulation influences the detection spark of the light sensing window, the window is automatically cleaned; the shell main body 2 is used for placing sensor electrical hardware and has a square structure; the light sensing window 3 is used for the infrared light sensing element to identify and sense the sparks passing through the connecting flange. In the electrical structure, a micro processing system (MCS) is a processing center of the sensor, and other parts of circuits are controlled by the MCS. The infrared acquisition amplifying circuit captures infrared light released from sparks, can sense the intensity of the infrared light, converts the infrared light into an analog electric signal, enters a micro-processing system for analysis after amplification and analog-to-digital conversion, and outputs a command to the OC output circuit and the communication circuit if dangerous spark information is analyzed and calculated, and transmits information or gives an alarm to the outside of the sensor; the microcontroller has the functions of self-checking the whole circuit structure and outputting fault information through the communication circuit when finding a fault; the pollution detection circuit is used for detecting dust accumulation on a light sensing window of the sensor, and utilizes the light reflection principle, namely the window dust accumulation influences the light reflection, when the dust accumulation reaches a certain degree, the light sensing window is determined to be incapable of effectively capturing and identifying the infrared spectrum of three sparks, and the dust accumulation is output outwards through the microprocessor and information needs to be cleaned; the power module is used for supplying power to the whole circuit part of the sensor by an external power supply.

As shown in fig. 3, the micro-processing system of the automatic spark recognition sensor in the present embodiment employs an STM32L051C8T6 chip; the power module adopts a module capable of converting 24V of a direct-current power supply into 12V, 9V and 3.3V of direct current; the output module is driven by OC; the photosensitive window adopts quartz reinforced glass or sapphire; the infrared acquisition amplifying circuit adopts a traditional infrared detector, an amplifying circuit device and an analog-digital converter; the pollution detection module adopts a traditional pollution detector. The automatic spark identification sensor in the implementation adopts an advanced optical infrared absorption principle(mainly absorb 1um ~ 3um infrared spectrum), through inside high sensitivity infrared photosensitive tube to the detection and processing of spark spectral radiant energy in the pipeline, realize the high accuracy quick identification to the spark to have anti-electromagnetic interference multiple anti-interference performance. The response time of the sensor is not more than 1ms, and the optical field of view is not less than 120 degrees; the protection grade can reach IP67, and 1mm at a distance of 0.5 m can be detected²Spark or 2mm at a distance of 1 meter²The spark of (3); the device has the functions of photosensitive window pollution alarm, self-checking and fault output, and is provided with an RS485 interface.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.

Claims (3)

1. A spark auto-induction recognition sensor is characterized by comprising an electrical structure and a shell, wherein the electrical structure is arranged in the shell and consists of a micro-processing system, an output module, an infrared acquisition and amplification circuit, a pollution detection module, a communication module and a power supply module;

the infrared acquisition amplifying circuit is used for capturing infrared light released from sparks, sensing the intensity of the infrared light, converting acquired optical signals into analog electric signals, and then amplifying the analog electric signals and converting the analog electric signals into digital signals in an analog-to-digital mode;

the micro-processing system is used for analyzing and calculating the digital signals output by the infrared acquisition amplifying circuit, then sending the analysis and calculation results to the output module and the communication module, and respectively transmitting information and alarming to the outside of the sensor; the circuit is also used for self-checking the whole circuit structure, finding faults and processing dust accumulation signals of a photosensitive window collected by the pollution detection module;

the output module is used for outputting spark information calculated and analyzed by the micro-processing system and transmitting the information to the outside of the sensor;

the communication module is used for communicating with the alarm system and transmitting alarm information calculated by the micro-processing system and fault information of the whole circuit structure self-checking in time;

the pollution detection module is used for detecting dust accumulated on the photosensitive window;

and the power supply module is used for supplying power to the whole circuit part of the sensor by an external power supply.

2. A spark auto-induction recognition sensor according to claim 1, wherein the housing comprises a self-cleaning interface (1), a housing body (2), a light-sensitive window (3) and a flange (4);

the flange (4) is used for installation and connection in a dangerous place or equipment, a short connecting pipe is arranged between the flange and the light sensing window, and the short connecting pipe is arranged to accurately identify sparks passing through the sensor and prevent interference of external bad information;

the automatic cleaning interface (1) is used for being connected into an automatic cleaning system, and when dust accumulation influences detection sparks at a photosensitive window, the window is automatically cleaned;

the housing body (2) is used for placing an electrical structure;

the light sensing window (3) senses sparks passing through the flange through identification of the infrared light sensing element.

3. A spark induction recognition sensor as claimed in claim 2, wherein the housing body (2) is of a cuboid construction.

Images