Dust explosion-proof intelligent multi-step image type fire detection equipment

Abstract

The utility model relates to dust explosion-proof intelligent multi-step image type fire detection equipment, which comprises a hemispherical base body, a camera, a dust detector, a processor and a plurality of heat sensors, and the outer surface of the hemispherical base body is composed of a spherical crown surface and a flat bottom surface. The camera is mounted at the top of the spherical crown surface, and the plurality of thermal sensors are mounted on the spherical crown surface and uniformly distributed around the camera; a flue is arranged in the base body, openings in the two ends of the flue form an air inlet and an air outlet in the spherical crown face respectively, and the air inlet is farther away from the flat bottom face of the base body than the air outlet. The air inlet is provided with a negative pressure fan for inducing air into the flue from the outside, the position, close to the air outlet, of the flue is expanded to form a to-be-detected space, and a dust detector is installed in the to-be-detected space; and the camera, the heat sensor and the dust detector are electrically connected with a processor. According to the technical scheme, dust explosion-proof intelligent multi-step image type special fire detection equipment is additionally arranged, so that a composite early warning and detection linkage system which is not afraid of the influence of high dust, extremely early detection and early warning, real-time imaging, multi-parameter fusion for detection and perception in different places and accurate detection is realized for a plant; and reliable information is provided for accurate initial fire extinguishing.

Description

TECHNICAL FIELD

[0001] The utility model relates to image type fire detector, especially dust explosion -proof intelligent multi -step image type fire detection equipment. BACKGROUND

[0002] In the aluminum production field, the forming workshop and its related supporting facilities such as heat medium oil storage tank and heat medium boiler room etc. have been the most important in enterprise fire prevention work. These areas not only involve flammable materials such as high-temperature heat conducting oil and liquid asphalt, but also use natural gas as fuel for combustion heating in heat medium boiler, further increasing the fire risk. Especially the workshop high building part, because its workshop structure is a three-dimensional structure, the equipment of each floor is complex and densely distributed, especially the heat conducting oil conveying pipeline and heating equipment, the complexity of its layout and connection mode is higher, which brings great challenge to safety production.

[0003] However, most of the old factory building fire protection system facilities are old, mainly traditional fire fighting equipment such as fire hydrant, fire extinguisher and fire sand. These facilities have obvious limitations when facing high-temperature heat conducting oil and asphalt and other special fires, because this kind of fire cannot be directly extinguished with water, especially in the presence of dust flying, no favorable measures are taken for dust explosion prevention. More seriously, there is a lack of advanced fire alarm device on site, which cannot realize automatic fire monitoring and alarm, and cannot automatically start safe and effective fire extinguishing measures. This situation leads to that once a fire occurs, the existing facilities often cannot discover and warn in time, and cannot effectively prevent the spread of fire, thereby bringing great threat to the safety of personnel and production equipment. INVENTION CONTENTS

[0004] The utility model provides a dust explosion -proof intelligent multi -step image type fire detection equipment that can monitor dust concentration, temperature and on -the -spot situation.

[0005] The utility model scheme is: dust explosion -proof intelligent multi -step image type fire detection equipment, including the base body of hemispherical, the outer surface is formed by spherical cap and flat bottom, still include camera, dust detector and processor and a plurality of heat sensors, the camera is installed at the top of spherical cap, a plurality of heat sensors are installed on spherical cap and evenly distribute around the camera, the base body is equipped with flue, the both ends opening of flue form air inlet, air outlet on spherical cap, the air inlet is more far away from the flat bottom of base body compared to the air outlet, the air inlet is equipped with the negative pressure fan that draws wind into the flue from outside, the position close to the air outlet of flue expands and forms the space to be measured, and the dust detector is installed in this space to be measured, the camera, heat sensor and dust detector are electrically connected with a processor.

[0006] The beneficial effects are: 1. Early detection and early warning: through the integration of cameras, thermal sensors and dust detectors, the device can realize multi-parameter fusion detection, capture the weak signal of the initial stage of fire in time, and provide valuable time for the initial fire extinguishing. The camera can capture the scene in real time and provide an intuitive monitoring picture for the operator, so as to discover abnormalities in time and take corresponding measures. 2. Through the cooperative work of the dust detector, the thermal sensor and the camera, the device can accurately detect the fire risk and trigger the composite early warning linkage system to automatically start the corresponding safety measures; by setting the flue to introduce external air into the space to be detected, the negative pressure fan is used to maintain the air flow between the flue and the external air, which avoids the deviation of the dust concentration caused by the poor air flow in the plant, and improves the accuracy and reliability of the detection. In summary, the dust explosion-proof intelligent multi-level image type fire detection device provides a comprehensive, efficient and intelligent fire monitoring solution for high-risk areas such as aluminum production, effectively improving the safety production level and emergency response capability of enterprises.

[0007] Further, the dust detector comprises a laser emitter and a laser receiver, the laser emitter comprises a laser emitting element and a lens group, the lens group is installed at the emitting end of the laser emitting element, and the laser receiver is arranged opposite to the lens group. By adopting the combination of the laser emitter and the laser receiver and being equipped with the lens group to focus and collimate the laser beam, the precision and sensitivity of dust detection can be significantly improved. The laser beam can penetrate a certain concentration of dust, and the laser receiver can capture the weak light signal generated by dust scattering, thereby realizing accurate measurement of dust concentration. In addition, the use of the lens group can also ensure the directivity and intensity of the laser beam, so that the dust detector can maintain stable performance under different environmental conditions.

[0008] Further, the flue is in a C-shaped structure. The C-shaped structure of the flue design helps to enhance the flowability and mixing effect of air in the flue. When the negative pressure fan works, external air is sucked into the flue and forms a vortex in the C-shaped structure, so that the dust particles in the air are more fully dispersed and mixed. This design not only improves the sampling representativeness of the dust detector for the dust concentration in the space to be detected, but also helps to reduce the measurement error caused by poor air flow.

[0009] Further, the base is provided with a protective cover, the protective cover is provided with a camera hole at the corresponding position of the camera and is provided with a detection hole at the corresponding position of the thermal sensor; and the protective cover is provided with air holes at the corresponding positions of the air inlet and the air outlet. The design of the protective cover provides additional protection for the camera and the thermal sensor, preventing damage or performance degradation of the equipment due to harsh factory environment (such as high temperature, humidity, corrosion, etc.). The opening of the camera hole and the detection hole ensures that the camera and the thermal sensor can normally collect images and detect temperature. In addition, the protective cover can also play a certain dustproof role, reducing the pollution of dust to the optical elements and sensors inside the equipment, thereby prolonging the service life of the equipment.

[0010] Further, the processor is connected with an alarm. Connecting the processor with the alarm can realize instant response and early warning to the fire risk. When the processor analyzes the data of the camera, the thermal sensor and the dust detector, if an abnormal situation (such as flame, high temperature or excessive dust concentration) is found, the processor will immediately trigger the alarm to send an alarm signal. This design not only improves the real-time performance and accuracy of fire detection, but also reminds the personnel in the factory to take emergency measures in time, avoiding the occurrence or expansion of fire accidents.

[0011] Further, the processor is also connected with a wireless communication module for real-time transmission of the detected image data, temperature data and dust concentration data to a remote monitoring terminal. It is suitable for industrial scenes that need remote monitoring, such as large factories, dangerous goods warehouses, etc.

[0012] Further, the wireless communication module supports multiple communication protocols, including at least one of Wi-Fi, Bluetooth, 4G / 5G, to adapt to the communication needs in different environments. Ensure that the equipment can still work stably in different environments (such as scenes with weak signal or high-speed transmission requirements). BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The structure diagram of the dust explosion-proof intelligent multi-stage image type fire detection equipment of the utility model;

[0014] The figure mark: base 1, protective cover 2, camera 3, thermal sensor 4, flue 5, air inlet 5-1, air outlet 5-2, negative pressure fan 5-3, laser emitter 6, laser receiver 7. DETAILED DESCRIPTION

[0015] As shown in Figure 1 The dust explosion-proof intelligent multi-stage image type fire detection equipment is installed in the factory space that needs to be monitored, including a hemispherical base 1 and a processor, and the base 1 is covered with a protective cover 2, and the outer surface of the base 1 is composed of a spherical crown surface and a flat bottom surface.

[0016] The camera 3 is arranged on the top of the spherical crown surface of the base 1, and the protective cover 2 is provided with a camera hole at the camera 3 for the camera 3 to extend out of the camera hole; two thermal sensors 4 are arranged on the spherical crown surface of the base 1 close to the top, and are symmetrically arranged on the two sides of the camera 3, the protective cover 2 is provided with a detection hole corresponding to each thermal sensor 4, and the thermal sensitive element of the thermal sensor 4 is in contact with the air.

[0017] The base 1 is provided with a C-shaped flue 5, the two ends of the flue 5 form an air inlet 5-1 and an air outlet 5-2 on the spherical crown surface of the base 1, the air inlet 5-1 is farther away from the flat bottom surface of the base 1 than the air outlet 5-2, and the flat bottom surface of the base 1 is fixed on the indoor ceiling during installation, so that the position of the air inlet 5-1 is lower than that of the air outlet 5-2 after installation, and when the negative pressure fan 5-3 is not started (for example, during the non-working time of the negative pressure fan 5-3 or when the negative pressure fan 5-3 fails), flue gas enters the flue 5 through natural diffusion.

[0018] A micro negative pressure fan 5-3 is arranged at the air inlet 5-1, the negative pressure fan 5-3 can be designed to start and stop at a certain time, and the operation of the negative pressure fan 5-3 can be freely set according to the workshop operation. The negative pressure fan 5-3 can suck external air into the flue 5, the flue 5 is expanded to form a detection space close to the air outlet 5-2, and a dust detector is arranged in the detection space, the dust detector includes a laser emitter 6 and a laser receiver 7, the laser emitter 6 includes a laser emitting element and a lens group arranged at the emitting end of the laser emitting element, the lens group collimates and focuses the laser beam emitted by the laser emitting element, so that the laser beam can accurately irradiate the detection area, and the laser receiver 7 is opposite to the lens group and is used for receiving the laser signal scattered or absorbed by dust particles and converting the laser signal into an electric signal.

[0019] The camera 3, the thermal sensor 4 and the dust detector are connected with a processor, the processor is also connected with a wireless communication module (Wi-Fi is supported in the embodiment), which is used for transmitting the detected image data, temperature data and dust concentration data to a remote monitoring terminal of the workshop in real time, so that the image, temperature, dust concentration in the air and the like in the workshop can be displayed in real time. Moreover, the dust explosion-proof intelligent multi-stage image type fire detection device also includes an alarm connected with the processor, the processor is electrically connected with the alarm, and the alarm threshold is set in the processor, so that the alarm is triggered when the threshold is reached. Since the alarm is arranged in the workshop space to be monitored, the alarm can remind the personnel to evacuate quickly after the alarm is triggered.

[0020] The above only is the embodiment of the present application, and the well-known specific technical solutions and / or common knowledge in the scheme are not described in detail. It should be pointed out that, for those skilled in the art, without departing from the technical solutions of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope claimed in the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A dust explosion-proof intelligent multi-stage image fire detection device, comprising a hemispherical base body, the outer surface of which is composed of a spherical cap surface and a flat bottom surface, characterized in that: The camera is installed on the top of the spherical crown surface, and the several thermal sensors are installed on the spherical crown surface and uniformly distributed around the camera; a flue is arranged in the base body, and the two ends of the flue are respectively opened to form an air inlet and an air outlet on the spherical crown surface; the air inlet is farther away from the flat bottom surface of the base body than the air outlet; the air inlet is provided with a negative pressure fan for introducing air from the outside into the flue; the position close to the air outlet of the flue is expanded to form a to-be-measured space, and the dust detector is installed in the to-be-measured space; the camera, the thermal sensor and the dust detector are electrically connected with a processor.

2. The dust explosion prevention intelligent multi-stage image type fire detection device according to claim 1, characterized in that: The dust detector comprises a laser emitter and a laser receiver, and the laser emitter comprises a laser emitting element and a lens group; the lens group is installed on the emitting end of the laser emitting element; and the laser receiver is arranged opposite to the lens group.

3. The dust explosion prevention intelligent multi-stage image fire detection device according to claim 2, characterized in that: The flue has a C-shaped structure.

4. The dust explosion prevention intelligent multi-stage image fire detection device according to claim 3, characterized in that: The base body is provided with a protective cover, the protective cover is provided with a camera hole at the position corresponding to the camera and is provided with a detection hole at the position corresponding to the thermal sensor; and the protective cover is provided with an air hole at the positions corresponding to the air inlet and the air outlet.

5. The dust explosion prevention intelligent multi-stage image type fire detection device according to claim 4, characterized in that: The processor is connected with an alarm.

6. The dust explosion-proof intelligent multi-stage image fire detection device according to any one of claims 1 to 5, characterized in that: The processor is further connected with a wireless communication module for transmitting the detected image data, temperature data and dust concentration data to a remote monitoring terminal in real time.

7. The dust explosion-proof intelligent multi-stage image fire detection device according to claim 6, characterized in that: The wireless communication module supports multiple communication protocols, including at least one of Wi-Fi, Bluetooth, 4G / 5G, to adapt to the communication needs in different environments.

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