Point type infrared gas detector

Abstract

The utility model discloses a point-type infrared gas detector which comprises a point-type infrared gas detector main body, an audible and visual alarm is arranged on the outer surface of one side of the upper end of the point-type infrared gas detector main body, and a bevel adapter tube head is arranged on the lower surface of the point-type infrared gas detector main body. The inner end of the bevel adapter tube head is provided with an adapter convex tube head, the outer surface of the adapter convex tube head is connected to a convex opening in the upper end of the harmful gas sensor through threads, a convex opening is formed in the upper end of the harmful gas sensor, and the inner side surface of the lower end of the bevel adapter tube head is connected with a convex positioning clamping block through a sliding groove; by adopting the turnover type adapter convex pipe head structure, the angle of the harmful gas sensor can be turned upwards or downwards, the position of a gas inlet can be adjusted according to the specific gravity of detected gas, the use is more convenient, and the gas inlet detection is not influenced.

Description

Technical Field

[0001] This utility model relates to the field of point-type infrared gas detectors, and more specifically, to a point-type infrared gas detector. Background Technology

[0002] Infrared gas detectors utilize infrared principles to detect gas concentration, primarily employing infrared absorption. They mainly leverage the different degrees to which different gases absorb infrared waves, detecting gases by measuring the infrared absorption wavelength. They feature good resistance to poisoning, high sensitivity, strong gas specificity, ultra-long service life, and strong environmental adaptability. Point-type infrared gas detectors are gas detection devices based on the infrared absorption principle, mainly used to detect the concentration of specific gases. Their working principle utilizes the absorption characteristics of specific gas molecules to infrared light; by measuring the intensity of infrared light absorption, the gas concentration is determined. The selective absorption characteristics of infrared light allow this type of detector to accurately identify and measure the concentration of different gas components. Point-type infrared gas detectors are widely used in various scenarios requiring gas monitoring, especially in harsh industrial environments with high temperatures and humidity. Due to their high precision and stability, they are commonly used for safety monitoring in industries such as petrochemicals, metallurgy, and power, ensuring that gas concentrations during production processes remain within safe ranges, thereby protecting production and personnel safety.

[0003] Existing infrared gas detectors typically include a housing and a detection chip. The housing has a light-transmitting window for infrared light to enter, and the detection chip is located inside the housing. Since the detection chip reflects some infrared light after receiving it, the reflected light exits through the light-transmitting window, affecting the system. In existing technologies, the detected harmful gases are generally methane or propane. Methane is lighter than air, so the detector needs to be installed at a high position to allow the methane to rise and enter the detector for detection. Propane is heavier than air, so the detector needs to be installed at a low position to allow the propane to descend and be detected. Different installation positions require different positions for the harmful gas sensor's inlet. However, in existing technologies, the inlet angle of the harmful gas sensor cannot be changed, making it inconvenient to use and affecting gas detection. Utility Model Content

[0004] To address the problems existing in the prior art, the purpose of this utility model is to provide a point-type infrared gas detector. By adopting a flip-type adapter protrusion head structure, the angle of its harmful gas sensor can be twisted and flipped, either upwards or downwards. The position of the air inlet can be adjusted according to the specific gravity of the gas being detected, making it more convenient to use and not affecting the air intake detection.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A point-type infrared gas detector includes a main body. An audible and visual alarm is mounted on the outer surface of one side of the upper end of the main body. A beveled adapter is mounted on the lower surface of the main body. An adapter protrusion is mounted on the inner end of the beveled adapter. The outer surface of the adapter protrusion is threaded to the upper protrusion of a hazardous gas sensor. The hazardous gas sensor has an upper protrusion. A convex positioning block is connected to the inner surface of the lower end of the beveled adapter via a sliding groove. A control pin is fixedly connected to the lower surface of the convex positioning block. A spring is sleeved on the outer surface of the control pin. The outer end of the convex positioning block is engaged with the inner surface of the adapter protrusion. By employing a flip-type adapter protrusion structure, the angle of the hazardous gas sensor can be twisted and flipped, either upwards or downwards. The position of the air inlet can be adjusted according to the specific gravity of the detected gas, making it more convenient to use and not affecting air intake detection.

[0007] Furthermore, the outer end surface of the adapter tube head is provided with a convex bayonet, and the outer surface of the convex bayonet is engaged with the inner surface of the angled adapter tube head.

[0008] Furthermore, the outer surface of the convex bayonet is provided with a snap-fit ​​groove, and the outer end of the convex positioning block snaps into the inner surface of the snap-fit ​​groove.

[0009] Furthermore, the outer surface of the adapter protrusion is provided with a hexagonal boss.

[0010] Furthermore, the lower surface of the harmful gas sensor is provided with an air inlet, and a protective net is provided at the air inlet.

[0011] Furthermore, the outer surface of the main body of the point-type infrared gas detector is provided with an annular protrusion, and the outer surface of the annular protrusion is provided with a strip-shaped mounting port.

[0012] Furthermore, the strip-shaped mounting openings are distributed on the outer surface of a ring-shaped convex edge.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] (1) By adopting a flip-type adapter protrusion head structure, the angle of its harmful gas sensor can be twisted and flipped, and can be up or down. The position of the air inlet can be adjusted according to the specific gravity of the gas being detected, making it more convenient to use and not affecting the air intake detection. Attached Figure Description

[0015] Figure 1 This is a first schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a second schematic diagram of the overall structure of this utility model;

[0017] Figure 3 This is a third schematic diagram of the overall structure of this utility model;

[0018] Figure 4 This is a side sectional view of the overall structure of this utility model;

[0019] Figure 5 This is a first schematic diagram of the adapter protrusion of this utility model;

[0020] Figure 6 This is a second schematic diagram of the adapter protrusion of this utility model.

[0021] Explanation of the labels in the diagram:

[0022] 1. Main body of point-type infrared gas detector; 2. Audible and visual alarm; 3. Folded corner adapter pipe head; 4. Adapter protruding pipe head; 5. Harmful gas sensor; 6. Protruding positioning block; 7. Control pull pin; 8. Spring; 40. Protruding bayonet; 41. Snap-fit ​​groove; 42. Hexagonal boss; 50. Protective net; 9. Annular protruding edge; 10. Strip mounting port; 42. Hexagonal boss. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] Please see Figure 1-6 A point-type infrared gas detector includes a point-type infrared gas detector body 1. An audible and visual alarm 2 is installed on the outer surface of one side of the upper end of the point-type infrared gas detector body 1 (in the prior art, an audible and visual alarm 2 is used to trigger an alarm when a gas leak is detected). A beveled adapter head 3 is installed on the lower surface of the point-type infrared gas detector body 1. An adapter protrusion head 4 is installed at the inner end of the beveled adapter head 3. The outer surface of the adapter protrusion head 4 is threadedly connected to the upper protrusion of a hazardous gas sensor 5. The hazardous gas sensor 5... The upper end is provided with a protrusion, and the lower inner surface of the angled adapter head 3 is connected to a convex positioning block 6 through a sliding groove. The lower surface of the convex positioning block 6 is fixedly connected to a control pin 7, and the outer surface of the control pin 7 is sleeved with a spring 8. The outer end of the convex positioning block 6 is engaged with the inner surface of the adapter protrusion head 4. By adopting a flip-type adapter protrusion head structure, the angle of its harmful gas sensor can be twisted and flipped, either upward or downward. The position of the air inlet can be adjusted according to the specific gravity of the detected gas, making it more convenient to use and not affecting the air intake detection.

[0026] The outer end surface of the adapter 4 is provided with a convex bayonet 40, and the outer surface of the convex bayonet 40 is engaged with the inner surface of the angled adapter 3; this facilitates insertion and positioning, and the adapter 4 can be positioned and rotated within the angled adapter 3.

[0027] The outer surface of the convex bayonet 40 is provided with a snap-fit ​​groove 41, and the outer end of the convex positioning block 6 snaps into the inner surface of the snap-fit ​​groove 41; it can snap-fit ​​and position, and the adapter convex tube head 4 can be rotated and positioned by the convex positioning block 6, and the positioning can be adjusted after the angle is adjusted.

[0028] The outer surface of the adapter protrusion head 4 is provided with a hexagonal protrusion 42; in use, by rotating the hexagonal protrusion head 42 with a wrench, the adapter protrusion head 4 can be rotated, and can be twisted and installed on the outer protrusion of the harmful gas sensor 5, which is convenient for the installation and removal of the harmful gas sensor 5 and is easy to use.

[0029] The lower surface of the hazardous gas sensor 5 is provided with an air inlet, and a protective net 50 is provided at the air inlet; this can protect the air inlet and prevent insects from entering.

[0030] The outer surface of the main body 1 of the point infrared gas detector is provided with an annular protrusion 9, and the outer surface of the annular protrusion 9 is provided with a strip-shaped mounting port 10; this facilitates the installation of the main body 1 of the point infrared gas detector, and it can be fixed along the strip mounting port 10 at the annular protrusion 9 by screws.

[0031] The strip-shaped mounting ports 10 are distributed on the outer surface of the annular convex edge 9; they are evenly distributed, allowing for multiple screw fixation points and stable installation.

[0032] In use, a bendable adapter head 3 is provided on the lower surface of the main body 1 of the point-type infrared gas detector. An adapter protrusion head 4 is provided at the inner end of the bendable adapter head 3. The outer surface of the adapter protrusion head 4 is threaded to the upper protrusion of the hazardous gas sensor 5. The upper end of the hazardous gas sensor 5 has a protrusion. A convex positioning block 6 is connected to the lower inner surface of the bendable adapter head 3 via a sliding groove. A control pin 7 is fixedly connected to the lower surface of the convex positioning block 6. A spring 8 is sleeved on the outer surface of the control pin 7. The outer end of the convex positioning block 6 is engaged with the inner surface of the adapter protrusion head 4. A convex slot 40 is provided on the outer surface of the adapter protrusion head 4, and the outer surface of the convex slot 40 is engaged with the inner surface of the bendable adapter head 3. This facilitates engagement and positioning. The adapter protrusion head 4 can be fixed within the bendable adapter head 3. The outer surface of the convex bayonet 40 is provided with a snap-fit ​​groove 41, and the outer end of the convex positioning block 6 snaps into the inner surface of the snap-fit ​​groove 41; it can snap-fit ​​and position, and the adapter convex tube head 4 can be rotated and positioned by the convex positioning block 6, and the angle can be adjusted for positioning; when in use, pull down the control pin 7 to drive the convex positioning block 6 to disengage from the snap-fit ​​groove 41. At this time, it is disengaged, and the harmful gas sensor 5 can be manually rotated to flip, and the angle of the air inlet can be adjusted upward or downward, which is convenient to use. Methane gas is light, so the air inlet of the harmful gas sensor 5 needs to be set downward, and the harmful gas enters the harmful gas sensor 5 from bottom to top for detection. Propane gas is heavy, so the air inlet of the harmful gas sensor 5 can be set upward, and the harmful gas enters the harmful gas sensor 5 from top to bottom for detection. It is convenient to detect different gases and is easy to use;

[0033] The angle of the hazardous gas sensor can be twisted and flipped, either upwards or downwards. The position of the air inlet can be adjusted according to the specific gravity of the gas being detected, making it more convenient to use and not affecting the air intake detection.

[0034] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A point-type infrared gas detector, comprising a point-type infrared gas detector body (1), characterized in that: An audible and visual alarm (2) is provided on the outer surface of one side of the upper end of the main body (1) of the point infrared gas detector. A bend adapter pipe (3) is provided on the lower surface of the main body (1) of the point infrared gas detector. An adapter protrusion pipe (4) is provided on the inner end of the bend adapter pipe (3). The outer surface of the adapter protrusion pipe (4) is connected to the upper protrusion of the harmful gas sensor (5) by a thread. The upper end of the harmful gas sensor (5) is provided with a protrusion. A convex positioning block (6) is connected to the inner surface of the lower end of the bend adapter pipe (3) by a sliding groove. A control pull pin (7) is fixedly connected to the lower surface of the convex positioning block (6). A spring (8) is sleeved on the outer surface of the control pull pin (7). The outer end of the convex positioning block (6) is engaged with the inner surface of the adapter protrusion pipe (4).

2. A point-type infrared gas detector according to claim 1, characterized in that: The outer end surface of the adapter protrusion (4) is provided with a convex bayonet (40), and the outer surface of the convex bayonet (40) is engaged with the inner surface of the angled adapter (3).

3. A point-type infrared gas detector according to claim 2, characterized in that: The outer surface of the convex bayonet (40) is provided with a snap-fit ​​groove (41), and the outer end of the convex positioning block (6) snaps into the inner surface of the snap-fit ​​groove (41).

4. A point-type infrared gas detector according to claim 1, characterized in that: The outer surface of the adapter protrusion (4) is provided with a hexagonal boss (42).

5. A point-type infrared gas detector according to claim 1, characterized in that: The lower surface of the harmful gas sensor (5) is provided with an air inlet, and a protective net (50) is provided at the air inlet.

6. A point-type infrared gas detector according to claim 1, characterized in that: The outer surface of the main body (1) of the point-type infrared gas detector is provided with an annular protrusion (9), and the outer surface of the annular protrusion (9) is provided with a strip-shaped mounting port (10).

7. A point-type infrared gas detector according to claim 6, characterized in that: The strip-shaped mounting openings (10) are distributed on the outer surface of the annular convex edge (9).

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