CHgas detector of MINI optical device

Abstract

The utility model discloses a CH4 gas detector of MINI optical device relates to optical device gas detection field, including base, encapsulation mechanism and transmission mechanism, base surface weld encapsulation mechanism, encapsulation mechanism adopts optical lens coupling mode, base is equipped with tube socket, tube socket surface attach chip, base both ends are equipped with transmission mechanism, the transmission mechanism is equipped with the optical lens coupling mode, the transmission mechanism is equipped with the optical lens coupling mode, and the transmission mechanism is equipped with the optical lens coupling mode. According to the detection device, an optical lens coupling mode is adopted, the coupling efficiency of a product is improved, the sealing gasket is arranged between the base and the tube shell, the sealing gasket is made of a rubber material, better air tightness is ensured, the chip is arranged in the middle of the tube base, the responsivity index of the chip is the best, the responsivity of the product is improved, and the reliability of the product is improved. Meanwhile, the photosensitive surface of the chip and the glass ball are oppositely mounted, so that the height from the photosensitive surface of the chip to the glass surface of the glass ball can be controlled, the focal length of a product can be conveniently controlled, TO25 packaging is adopted, the product is miniaturized and can be applied to a narrower space, the practicability is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of gas detection of optical devices, in particular to a CH4 gas detector for MINI optical devices. Background Technique

[0002] Methane is a flammable gas. It is widely distributed in nature and is the main component of natural gas, biogas, pit gas, etc. It is commonly known as gas. When mixed with air, it can form an explosive mixture and is dangerous of combustion and explosion when encountering heat sources and open flames. In a confined space, methane may displace oxygen. If the oxygen content is less than 19.5% after being displaced by methane, it may cause asphyxiation. Therefore, when using methane, safety measures must be taken to avoid combustion or explosion. However, for existing CH4 gas detectors, the general package is TO46 package, which has certain limitations in the space for product use, making the use inconvenient and reducing the practicability. Content of the Utility Model

[0003] A CH4 gas detector for MINI optical devices proposed by the utility model solves the existing problems.

[0004] To achieve the above object, the utility model adopts the following technical scheme: A CH gas detector for MINI optical devices includes a base, a packaging mechanism and a transmission mechanism. The packaging mechanism is welded on the surface of the base. The packaging mechanism is of the optical lens coupling type. A socket is provided on the base, and a chip is pasted on the surface of the socket. Transmission mechanisms are provided at both ends of the base.

[0005] Preferably, the packaging mechanism includes a tube shell and a glass sphere. The tube shell is provided on the base. The tube shell and the base enclose a sealed cavity. The tube shell is a hollow shell, and a glass sphere is provided in the middle above the tube shell.

[0006] Preferably, the transmission mechanism includes a first pin and a second pin. The first pin is provided at one end of the base, and the second pin is provided at the other end of the base. One end of the first pin is welded to one end of the base, and one end of the second pin is welded to the other end of the base.

[0007] Preferably, a gasket is provided between the base and the tube shell, and the gasket is made of rubber material.

[0008] Preferably, the diameter of the base is 2.5 mm.

[0009] Preferably, the socket is centrally provided with a chip. The socket is coaxial with the tube shell, and the photosensitive surface of the chip is installed opposite to the glass sphere.

[0010] The beneficial effects of the present utility model are as follows: The detection device adopts an optical lens coupling method, which improves the coupling efficiency of the product. A sealing gasket is provided between the base and the tube shell. The sealing gasket is made of rubber, ensuring better airtightness. The chip is centrally arranged on the tube base, enabling the chip response index to reach the best, improving the product response. At the same time, the photosensitive surface of the chip is installed opposite to the glass sphere, enabling the control of the height from the photosensitive surface of the chip to the glass surface of the glass sphere, facilitating the control of the product focal length. Moreover, by changing to TO25 packaging, the product can be miniaturized, can be applied in a more confined space, improving the practicality and reducing the production cost. Brief Description of the Drawings

[0011] Figure 1 It is a structural schematic diagram of the present utility model.

[0012] Figure 2 It is a sectional structural schematic diagram of the present utility model.

[0013] Figure 3 It is an exploded structural schematic diagram of the present utility model.

[0014] Reference numerals in the figure: 1, base; 2, packaging mechanism; 4, tube base; 5, chip; 6, tube shell; 7, glass sphere; 8, sealing cavity; 9, first pin; 10, second pin; 11, sealing gasket. Detailed Embodiment

[0015] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0016] Refer to Figures 1-3 As shown, a CH4 gas detector for a MINI optical device includes a base 1, a packaging mechanism 2, and a transmission mechanism. The packaging mechanism 2 is welded to the surface of the base 1. The packaging mechanism 2 adopts an optical lens coupling method, which improves the coupling efficiency of the product. A tube base 4 is provided on the base 1. The tube base 4 is a carrier for mounting the chip. The chip 5 is attached to the surface of the tube base 4. The chip 5 is used for signal reception and converts the optical signal into an electrical signal. Transmission mechanisms are provided at both ends of the base 1.

[0017] The encapsulation mechanism 2 includes a package 6 and a glass sphere 7. The package 6 is provided on the base 1. The package 6 and the base 1 enclose a sealed cavity 8. The package 6 can not only carry the glass sphere 7, but also ensure the airtightness in the cavity. The package 6 is a hollow shell. The glass sphere 7 is centered above the package 6. The glass sphere 7 can transmit light, so as to transmit optical signals. The transmission mechanism includes a first lead 9 and a second lead 10. One end of the base 1 is provided with the first lead 9, and the other end of the base 1 is provided with the second lead 10. One end of the first lead 9 is welded to one end of the base 1, and one end of the second lead 10 is welded to the other end of the base 1, for transmitting the preprocessed electrical signals.

[0018] A gasket 11 is provided between the base 1 and the package 6. The gasket 11 is made of rubber to ensure better airtightness. The diameter of the base 1 is 2.5 mm. By using the TO25 package, the product can be miniaturized, can be applied in a narrower space, improves the practicability, and reduces the production cost. The socket 4 is centered with a chip 5, so that the response index of the chip 5 reaches the best, improving the product response. The socket 4 is coaxial with the package 6, and the photosensitive surface of the chip 5 is installed opposite to the glass sphere 7, so that the height from the photosensitive surface of the chip 5 to the glass surface of the glass sphere 7 can be controlled, facilitating the control of the product focal length.

[0019] Working principle: When the device of the present utility model is in use, the laser reflected back by the reflector is focused on the CH4 gas detector for optical signal detection. The optical signal is sent to the chip 5 through the glass sphere 7. The chip 5 converts the received optical signal into an electrical signal, then preprocesses the electrical signal, and transmits the electrical signal through the first lead 9 and the second lead 10. By using the TO25 package, the product can be miniaturized, can be applied in a narrower space, improves the practicability, and reduces the production cost.

[0020] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent replacements or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A CH4 gas detector of a MINI optical device, comprising a base (1), a packaging mechanism (2) and a transmission mechanism, characterized in that: A packaging mechanism (2) is welded on the surface of the base (1), the packaging mechanism (2) is in an optical lens coupling mode, a tube seat (4) is provided on the base (1), a chip (5) is attached to the surface of the tube seat (4), and transmission mechanisms are provided at both ends of the base (1).

2. A CH4 gas detector of a MINI optical device according to claim 1, characterized in that: The packaging mechanism (2) comprises a tube shell (6) and a glass ball (7); the tube shell (6) is arranged on the base (1); the tube shell (6) and the base (1) are combined to form a sealed cavity (8); the tube shell (6) is a hollow shell; a glass ball (7) is arranged in the center above the tube shell (6).

3. A CH4 gas detector of a MINI optical device according to claim 1, characterized in that: The transmission mechanism comprises a first pin (9) and a second pin (10); the first pin (9) is provided at one end of the base (1), and the second pin (10) is provided at the other end of the base (1); one end of the first pin (9) is welded to one end of the base (1), and one end of the second pin (10) is welded to the other end of the base (1).

4. A CH4 gas detector of a MINI optical device according to claim 1, characterized in that: A sealing gasket (11) is provided between the base (1) and the tube shell (6), and the sealing gasket (11) is made of rubber material.

5. A CH4 gas detector of a MINI optical device according to claim 1, characterized in that: The diameter of the base (1) is 2.5 mm.

6. A CH4 gas detector of a MINI optical device according to claim 1, characterized in that: A chip (5) is centrally arranged on the tube base (4); the tube base (4) is coaxial with the tube shell (6); and the photosensitive surface of the chip (5) is installed opposite to the glass ball (7).

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