Explosion-proof visibility meter

Abstract

The utility model belongs to meteorological monitoring equipment field, specifically disclose the anti -explosion type visibility appearance, including the emission lens barrel, the shell and the receiving lens barrel, the inside of shell is provided with circuit module, the top of circuit module is provided with microprocessor, the inside of shell of circuit module periphery is provided with resin layer, one side fixedly connected with the emission lens barrel of shell top, the other side fixedly connected with the receiving lens barrel of shell top, the inside of emission lens barrel and receiving lens barrel all is provided with the lens, the surface of lens is provided with the protective layer, and the one end of shell swing installation has the protective board, and one end of protective board is provided with double digital connector, the utility model discloses through 316L stainless steel stamping shell, epoxy resin pouring circuit promotes the anti -explosion corrosion -resisting ability, the light path design is optimized, and the measurement precision is strengthened to the thickening lens, prolongs the cleaning cycle, and the maintenance cost is reduced to the multi -protocol power supply, and the adaptability and compatibility are improved.

Description

Technical Field

[0001] This utility model belongs to the field of meteorological monitoring equipment, specifically relating to an explosion-proof visibility meter. Background Technology

[0002] In aviation, maritime, railway, and highway navigation aids, visibility is one of the core meteorological parameters for ensuring traffic safety. High-risk scenarios such as airport oil depots, port fuel storage areas, and tunnel oil and gas transportation sections contain flammable and explosive gases. In scenarios such as ports and cross-sea bridges, the corrosion rate of equipment metal parts by salt spray particles is 5-10 times that of ordinary environments. Traditional aluminum alloy or ordinary steel shells are prone to rust and structural loosening. Therefore, stringent requirements are placed on meteorological monitoring equipment for explosion-proof, corrosion-resistant, and highly reliable performance.

[0003] However, traditional visibility meters, due to the lack of reinforced housing structure and optical components, pose safety hazards in flammable and explosive environments. In high-risk environments, the equipment is easily corroded, and there are also problems such as fragile optical components, high maintenance frequency, communication compatibility and power supply limitations. Utility Model Content

[0004] The purpose of this invention is to provide an explosion-proof visibility meter to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An explosion-proof visibility meter includes a transmitting lens tube, a housing, and a receiving lens tube. A circuit module is housed inside the housing, and a microprocessor is located on the top of the circuit module. A resin layer is located inside the housing surrounding the circuit module. The transmitting lens tube is fixedly connected to one side of the top of the housing, and the receiving lens tube is fixedly connected to the other side of the top of the housing. Lenses are installed inside both the transmitting and receiving lens tubes, and a protective layer is provided on the surface of each lens. A protective plate is movably mounted on one end of the housing, and a dual digital connector is located at one end of the protective plate.

[0007] Preferably, the resin layer is made of epoxy resin.

[0008] Preferably, the dual digital connector is compatible with ModBus and ASCII protocols.

[0009] Preferably, the receiving lens is installed facing north to avoid interference from direct sunlight on the optical path.

[0010] Preferably, both ends of the shell on one side of the protective plate are fixedly connected to fasteners, and the fasteners are movably installed with fixing bolts inside.

[0011] Preferably, the microprocessor has a heat sink on top, and the heat sink is made of heat-dissipating copper.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention utilizes a 316L stainless steel sheet stamping and integral forming process for the shell, replacing traditional welding and splicing, thus eliminating the risk of salt spray corrosion of weld seams at the source. The surface is covered with a UV-resistant outdoor powder coating, forming a double-layer anti-corrosion barrier that can withstand long-term erosion by chloride ions in high-salt spray environments such as at sea and along the coast. Its service life is 3 to 5 times longer than that of traditional ordinary steel shells. The circuit module adopts an epoxy resin integral casting process, completely encapsulating the circuit board and electronic components in an insulating and thermally conductive resin layer. This not only isolates flammable and explosive gases and moisture from intrusion, but also reduces external interference through the electromagnetic shielding properties of the material itself. It meets explosion-proof standards such as IEC60079 and can be safely applied in explosive hazardous areas such as oil and gas platforms and drilling sites.

[0014] This invention employs a directional installation strategy, explicitly requiring the receiver to be installed facing north in the Northern Hemisphere environment. By utilizing the Earth's rotation, the receiver is always positioned away from the direct sunlight. Combined with the physical layout of the transmitter and receiver at a fixed angle, this effectively filters out interference from strong background light sources such as sunlight on the scattered light signal. The lens uses optical glass with a thickness of 5mm or more, and the protective layer on the lens surface enhances its anti-fouling ability and reduces the impact of dust, snow, and other contaminants on the optical window. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0016] Figure 1 This is a structural breakdown diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of a partial structure of the circuit board and microprocessor of this utility model;

[0018] Figure 3 This is a partial structural diagram of the heat sink and resin layer of this utility model;

[0019] Figure 4 This is a partial structural diagram of the lens and protective layer of this utility model.

[0020] In the diagram: 1. Transmitting lens tube; 2. Housing; 3. Dual digital connector; 4. Protective plate; 5. Fixing component; 501. Fixing bolt; 6. Receiving lens tube; 7. Circuit module; 8. Microprocessor; 9. Heat sink; 10. Resin layer; 11. Lens; 1101. Protective layer. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0024] As attached Figure 1 To be continued Figure 4 As shown:

[0025] Example 1: This example provides an explosion-proof visibility meter, including a transmitting tube 1, a housing 2, and a receiving tube 6. A circuit module 7 is installed inside the housing 2, and a microprocessor 8 is installed on the top of the circuit module 7. A resin layer 10 is installed inside the housing 2 surrounding the circuit module 7. The transmitting tube 1 is fixedly connected to one side of the top of the housing 2, and the receiving tube 6 is fixedly connected to the other side of the top of the housing 2. Lenses 11 are installed inside both the transmitting tube 1 and the receiving tube 6. A protective layer 1101 is installed on the surface of the lens 11. A protective plate 4 is movably installed at one end of the housing 2, and a dual digital connector 3 is installed at one end of the protective plate 4. The resin layer 10 is made of epoxy resin. The dual digital connector 3 is compatible with ModBus and ASCII protocols. The receiving tube 6 is installed facing north to avoid interference from direct sunlight.

[0026] The housing 2 is made of 316L stainless steel sheet through a stamping process to form a fully sealed structure. The outer surface is coated with UV-resistant outdoor powder coating, which has the ability to resist salt spray corrosion and is a professional explosion-proof structure suitable for explosive environments. The resin layer 10 is made of epoxy resin and is integrally cast for the circuit module 7, isolating flammable gases and moisture, while also isolating electromagnetic interference and improving signal stability. The lenses 11 of the transmitting lens tube 1 and the receiving lens tube 6 are made of thickened optical glass, and the surface protective layer 1101 is a non-fouling nano-coating to enhance the anti-fouling ability and reduce the impact of dust, snow and other contaminants on the optical window. The transmitting lens tube 1 has a built-in infrared light-emitting diode that emits infrared light pulses with a center wavelength of 0.85μm. The receiving lens tube 6 focuses the forward-scattered light through the internal lens 11, and the receiving lens tube 6 is installed facing the Northern Hemisphere to avoid interference from direct sunlight. The transmitter and receiver are at a fixed angle to ensure that the sampling space is a specific volume of atmosphere.

[0027] The dual digital connectors 3 are compatible with ModBus and ASCII protocols, support RS485, RS232, and Ethernet interfaces, and can also be equipped with analog output, 0-5 / 10V voltage or 4-20mA current. The device adopts a wide voltage input of DC12V, ≤4W low power consumption, supports DC power supply, and is suitable for solar power supply or deployment in remote areas. The protective plate 4 that is movably installed at one end of the housing 2 facilitates the installation and maintenance of the device. The protective layer 1101 of the lens 11 extends the cleaning cycle to once every 3 months. It can be wiped with ethanol and a soft cotton cloth to avoid scratches.

[0028] The transmitting tube 1 emits an infrared light pulse with a wavelength of 0.85μm, which enters the atmosphere. Suspended particles in the atmosphere generate forward scattered light. The receiving tube 6 collects the scattered light through the lens 11. The photoelectric sensor converts the light signal into an electrical signal. The data acquisition board transmits the electrical signal to the microprocessor 8. The microprocessor 8 calculates the visibility value through a preset algorithm and finally outputs a digital signal or an optional analog signal through the dual digital connector 3.

[0029] Example 2: This example is basically the same as the previous example, except that both ends of the shell 2 on one side of the protective plate 4 are fixedly connected to the fixing parts 5, and the fixing parts 5 are movably installed with fixing bolts 501.

[0030] Connect the fastener 5 to the external structure, and then screw the fixing bolt 501 between the fastener 5 and the external structure to fix the device on the external structure for use.

[0031] Specifically, the microprocessor 8 has a heatsink 9 on top, and the heatsink 9 is made of heat-dissipating copper.

[0032] The heat sink 9 can absorb the heat of the microprocessor 8 and transfer it to the housing 2, so that the microprocessor 8 can dissipate heat normally.

[0033] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0034] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0035] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An explosion-proof visibility meter, characterized in that: It includes a transmitting tube (1), a housing (2), and a receiving tube (6); The housing (2) is provided with a circuit module (7) inside, a microprocessor (8) is provided on the top of the circuit module (7), a resin layer (10) is provided inside the housing (2) surrounding the circuit module (7), a transmitting lens tube (1) is fixedly connected to one side of the top of the housing (2), and a receiving lens tube (6) is fixedly connected to the other side of the top of the housing (2). Both the transmitting tube (1) and the receiving tube (6) are equipped with lenses (11), and the surface of the lenses (11) is provided with a protective layer (1101). A protective plate (4) is movably installed at one end of the housing (2), and a dual digital connector (3) is provided at one end of the protective plate (4).

2. The explosion-proof visibility meter according to claim 1, characterized in that: The resin layer (10) is made of epoxy resin.

3. The explosion-proof visibility meter according to claim 1, characterized in that: The dual digital connector (3) is compatible with ModBus and ASCII protocols.

4. The explosion-proof visibility meter according to claim 1, characterized in that: The receiving lens tube (6) is installed facing north to avoid interference from direct sunlight on the optical path.

5. The explosion-proof visibility meter according to claim 1, characterized in that: Both ends of the housing (2) on one side of the protective plate (4) are fixedly connected to fasteners (5), and the fasteners (5) are movably installed with fixing bolts (501).

6. The explosion-proof visibility meter according to claim 1, characterized in that: The microprocessor (8) is provided with a heat sink (9) on its top, and the heat sink (9) is made of heat-dissipating copper material.

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