A combustible gas detection device for oil tankers

Abstract

This utility model discloses a combustible gas detection device for oil tankers, applied in the field of gas detection. Through the coordinated arrangement of a rotating shroud, transmission assembly, cleaning assembly, filter ring, and air guide pipe, when the fan is working, the transmission assembly drives the rotating shroud to rotate, thereby causing the air guide pipe to rotate in contact with the filter ring. Simultaneously, a connecting rod drives a cleaning brush to clean the filter ring, achieving automatic cleaning of the filter ring. Furthermore, because the air guide pipe and cleaning brush are always kept a considerable distance apart, the probability of dust being sucked into the air guide pipe during cleaning is reduced. The coordinated arrangement of the connecting ring and compression spring one makes the replacement of the secondary filter structure more convenient. The compression spring two ensures that the cleaning brush maintains a certain pressure when cleaning the filter ring, improving the cleaning effect. Moreover, when the filter ring surface is uneven or contains foreign objects, the compression spring two acts as a buffer, preventing damage to the cleaning brush and ensuring a more thorough cleaning.

Description

Technical Field

[0001] This utility model relates to the field of gas detection, and in particular to a combustible gas detection device for oil tankers. Background Technology

[0002] Oil tankers face significant risks of flammable gas explosions during operation. Various equipment and working environments on board may contain flammable gases such as methane, ethane, and propane. If these flammable gases are not detected and dealt with in a timely manner, they can pose a major safety hazard to the vessel. Therefore, flammable gas detectors, widely used in the marine industry, are of paramount importance.

[0003] A search revealed, for example, a system for monitoring cryogenic gas leaks in marine LNG tank containers disclosed in patent publication number CN216943467U. This system includes the cargo deck of the ship itself, as well as a combustible gas monitoring system and a cryogenic gas detection system. The combustible gas monitoring system includes multiple open-circuit infrared gas detectors positioned above the tank container loading area on the deck. These detectors include short-range and long-range detectors; the short-range detectors are arranged laterally along the deck, and the long-range detectors are arranged longitudinally. The cryogenic gas detection system includes multiple cryogenic thermal imagers positioned high on the bow and stern areas of the cargo deck. Both the open-circuit infrared gas detectors and the cryogenic thermal imagers are mounted on top of this system via invertible probe mounting bases. Through the rational arrangement of multiple detectors and cryogenic infrared cameras, the area above the ship's cargo tank containers can be effectively monitored.

[0004] Based on the above search and combined with existing technology, it was found that existing combustible gas detection devices similar to those disclosed above usually have a filter screen installed at the air inlet to prevent external solid impurities from entering the device and affecting detection. However, the filter screen needs to be cleaned frequently by hand, which is quite cumbersome. Utility Model Content

[0005] The core of this invention lies in solving the problem of frequent manual cleaning of the filter screen in existing technologies through the coordinated design of the rotating cover, transmission component, cleaning component, filter ring, and air guide tube. It also reduces the likelihood of dust scattered during cleaning being sucked into the air guide tube.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A combustible gas detection device for oil tankers includes a gas detection device body and a warning light installed on the side of the gas detection device body. A mounting bracket is fixed to the back of the gas detection device body, and an air inlet pipe is installed at the bottom of the gas detection device body. A fan is built into the air inlet pipe. A rotating cover is rotatably installed at the side of the air inlet pipe away from the gas detection device body. A guide pipe is fixedly connected to the radial side of the rotating cover. A filter ring is coaxially arranged on the outer side of the rotating cover. The inner surface of the filter ring is slidably fitted with the side of the guide pipe away from the rotating cover. A connecting frame is connected between the filter ring and the air inlet pipe. A cleaning component that contacts the filter ring is installed on the outer surface of the rotating cover away from the guide pipe. A transmission assembly is installed between the output shaft of the fan and the rotating cover. When the fan is working, the transmission assembly drives the rotating cover to rotate, which in turn drives the air guide pipe to rotate in contact with the filter ring. At the same time, the cleaning assembly cleans the filter ring, achieving the effect of automatic cleaning of the filter ring.

[0008] Furthermore, the transmission assembly includes transmission gear one, transmission gear two, and transmission gear ring; The first transmission gear is fixed coaxially with the output shaft of the fan, the transmission gear ring is fixed coaxially with the rotating cover, and the second transmission gear is rotatably installed on the inside of the air inlet pipe and meshes between the first transmission gear and the transmission gear ring.

[0009] Furthermore, the cleaning component includes a connecting rod and a cleaning brush. The connecting rod is connected to the rotating cover, and the cleaning brush is fixed to the end of the connecting rod and contacts the inner surface of the filter ring.

[0010] Furthermore, a two-stage filtration structure is provided on the inner side of the air duct, and the air inlet pipe slides through the rotating cover and extends to the inner side of the air duct. The connecting frame includes a connecting ring and multiple fixing rods. The connecting ring is vertically slidably sleeved on the outside of the air inlet pipe. Multiple fixing rods are provided, and the multiple fixing rods are equidistantly connected between the connecting ring and the filter ring. A compression spring is fixed between the connecting ring and the gas detection device body.

[0011] Furthermore, a limit slider is integrally provided on the inner surface of the connecting ring, and a limit groove is provided on the outer surface of the air intake pipe for the limit slider to slide vertically.

[0012] Furthermore, a compression spring is fixed between the cleaning brush and the rotating cover.

[0013] Compared with existing technologies, the advantages of this utility model are: (1) This solution uses a combination of rotating cover, transmission component, cleaning component, filter ring and air duct. When the fan is working, the transmission component drives the rotating cover to rotate, which in turn drives the air duct to rotate in contact with the filter ring. At the same time, the connecting rod drives the cleaning brush to clean the filter ring, thus achieving the effect of automatic cleaning of the filter ring. Since the air duct and the cleaning brush are always far apart, the probability of dust being sucked into the air duct during the cleaning process can be reduced.

[0014] (2) This solution uses the connection ring and compression spring one to manually push the connection ring and compress the compression spring one, so that the filter ring and the air guide tube are misaligned. At this time, manually push the cleaning brush and use the connecting rod to push the secondary filter structure outward. Then, replace the new secondary filter structure, making the replacement of the secondary filter structure more convenient.

[0015] (3) This solution uses the second compression spring to maintain a certain pressure when the cleaning brush cleans the filter ring, thus improving the cleaning effect. When the surface of the filter ring is uneven or contains foreign objects, the second compression spring can act as a buffer, preventing damage to the cleaning brush and ensuring a more thorough cleaning. At the same time, this design also allows the cleaning brush to better adapt to the shape and size of the filter ring, further improving the comprehensiveness and effectiveness of the cleaning. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the structure of the filter mesh ring of this utility model.

[0017] Explanation of the labels in the diagram: 1. Gas detection device body; 2. Mounting bracket; 3. Warning light; 4. Air inlet pipe; 5. Rotating cover; 6. Air guide pipe; 7. Filter mesh ring; 8. Fixing rod; 9. Two-stage filtration structure; 10. Fan; 11. Transmission gear one; 12. Transmission gear two; 13. Transmission gear ring; 14. Connecting rod; 15. Cleaning brush; 16. Compression spring one; 17. Connecting ring; 18. Limiting slider; 19. Compression spring two. Detailed Implementation

[0018] The technical solution will now be clearly and completely described with reference to the accompanying drawings in the embodiments of this utility model.

[0019] First implementation method: Please see Figures 1-4 A combustible gas detection device for oil tankers includes a gas detection device body 1 and a warning light 3 installed on the side of the gas detection device body 1. A mounting bracket 2 is fixed on the back of the gas detection device body 1, and an air inlet pipe 4 is installed at the bottom of the gas detection device body 1. A fan 10 is built into the air inlet pipe 4.

[0020] Among them, the gas detection device body 1 is a conventional gas detection device, such as the HD-700 / 800 / 900 series fixed gas detector; the fan 10 can be a conventional model, such as the CBL series fan 10, which is suitable for flammable and explosive environments such as oil tankers.

[0021] A rotating cover 5 is rotatably installed at the side of the air inlet pipe 4 away from the gas detection device body 1. A guide pipe 6 is fixedly connected to the radial side of the rotating cover 5. A filter ring 7 is coaxially arranged on the outer side of the rotating cover 5. The filter ring 7 is preferably made of conventional stainless steel. The inner surface of the filter ring 7 is slidably fitted to the side of the guide pipe 6 away from the rotating cover 5. A connecting frame is connected between the filter ring 7 and the air inlet pipe 4. A cleaning component that contacts the filter ring 7 is installed on the outer surface of the rotating cover 5 away from the guide pipe 6. A transmission component is arranged between the output shaft of the fan 10 and the rotating cover 5.

[0022] Regarding the transmission assembly, specifically, the transmission assembly includes a first transmission gear 11, a second transmission gear 12, and a transmission gear ring 13. The first transmission gear 11 is coaxially fixed with the output shaft of the fan 10, the transmission gear ring 13 is coaxially fixed with the rotating cover 5, and the second transmission gear 12 is rotatably mounted on the inner side of the air intake pipe 4 and meshes between the first transmission gear 11 and the transmission gear ring 13.

[0023] When the fan 10 is in operation, the transmission gear 11 and the transmission gear 2 12 cause the transmission gear ring 13 to rotate with the rotating cover 5.

[0024] Regarding the cleaning component, specifically, the cleaning component includes a connecting rod 14 and a cleaning brush 15. The connecting rod 14 is connected to the rotating cover 5, and the cleaning brush 15 is fixed to the end of the connecting rod 14 and contacts the inner surface of the filter ring 7.

[0025] Based on the above structural configuration, when the fan 10 is working, it drives the rotating cover 5 to rotate through the transmission component, thereby causing the air guide pipe 6 to rotate in contact with the filter ring 7. At the same time, the connecting rod 14 drives the cleaning brush 15 to clean the filter ring 7, achieving the effect of automatic cleaning of the filter ring 7. Since the air guide pipe 6 and the cleaning brush 15 are always far apart, the probability of dust scattered during the cleaning process being sucked into the air guide pipe 6 can be reduced.

[0026] Second implementation method: Based on the first embodiment, a secondary filter structure 9 is provided on the inner side of the air duct 6. The secondary filter structure 9 uses conventional filter cotton to filter out smaller dust particles and moisture, so as to better protect the semiconductor gas-sensitive element built into the gas detection device body 1. Of course, the secondary filter structure 9 will not adversely affect the detection of combustible gases, that is, the secondary filter structure 9 will not filter out the components to be detected in the combustible gas. The air inlet pipe 4 slides through the rotating cover 5 and extends to the inner side of the air duct 6. The connecting frame includes a connecting ring 17. The connecting ring 17 is vertically slidably sleeved on the outside of the air intake pipe 4, and multiple fixing rods 8 are provided, and the multiple fixing rods 8 are equidistantly connected between the connecting ring 17 and the filter ring 7. A compression spring 16 is fixed between the connecting ring 17 and the gas detection device body 1. A limit slider 18 is integrally provided on the inner surface of the connecting ring 17, and a limit groove is provided on the outer surface of the air intake pipe 4 for the limit slider 18 to slide vertically. The limit slider 18 cooperates with the limit groove to limit the connecting ring 17 and prevent the connecting ring 17 from rotating relative to the air intake pipe 4.

[0027] Staff regularly replace the secondary filter structure 9 inside the air duct 6. When replacing it, manually push the connecting ring 17 to compress the spring 16, causing the filter ring 7 to be misaligned with the air duct 6. At this time, manually push the cleaning brush 15 and use the connecting rod 14 to push the secondary filter structure 9 outwards, and then replace it with a new secondary filter structure 9.

[0028] A compression spring 19 is fixed between the cleaning brush 15 and the rotating cover 5. This compression spring 19 ensures that the cleaning brush 15 maintains a certain pressure when cleaning the filter ring 7, improving the cleaning effect. Furthermore, when the surface of the filter ring 7 is uneven or contains foreign objects, the compression spring 19 acts as a buffer, preventing damage to the cleaning brush 15 and ensuring a more thorough cleaning. This design also allows the cleaning brush 15 to better adapt to the shape and size of the filter ring 7, further enhancing the comprehensiveness and effectiveness of the cleaning process.

[0029] It should be noted that the specific models and specifications of the electrical equipment involved in this solution need to be selected and determined based on the actual specifications of the device. The specific selection and calculation methods adopt existing technologies in this field, so they will not be described in detail here. The power supply and principles of the electrical equipment involved are clear to those skilled in the art, and will not be described in detail here.

[0030] The above description is merely a preferred embodiment of this utility model; it encompasses all the protection scope of this utility model. 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 covered within the protection scope of this utility model.

Claims

1. A combustible gas detection device for an oil tanker, comprising a gas detection device body (1) and a warning light (3) installed on the side of the gas detection device body (1), wherein a mounting bracket (2) is fixed to the back of the gas detection device body (1), characterized in that: The bottom of the gas detection device body (1) is equipped with an air inlet pipe (4), and the air inlet pipe (4) has a built-in fan (10). A rotating cover (5) is rotatably installed at the side opening of the air inlet pipe (4) away from the gas detection device body (1). A guide pipe (6) is fixedly connected to the radial side end of the rotating cover (5). A filter ring (7) is coaxially arranged on the outer side of the rotating cover (5). The inner surface of the filter ring (7) is slidably fitted with the side opening of the guide pipe (6) away from the rotating cover (5). A connecting frame is connected between the filter ring (7) and the air inlet pipe (4). A cleaning component that contacts the filter ring (7) is installed on the outer surface of the rotating cover (5) away from the guide pipe (6). A transmission assembly is provided between the output shaft of the fan (10) and the rotating cover (5). When the fan (10) is working, it drives the rotating cover (5) to rotate through the transmission assembly.

2. The combustible gas detection device for oil tankers according to claim 1, characterized in that: The transmission assembly includes a first transmission gear (11), a second transmission gear (12), and a transmission gear ring (13). The first transmission gear (11) is fixed coaxially with the output shaft of the fan (10), the transmission gear ring (13) is fixed coaxially with the rotating cover (5), and the second transmission gear (12) is rotatably installed on the inner side of the air inlet pipe (4) and meshes between the first transmission gear (11) and the transmission gear ring (13).

3. The combustible gas detection device for oil tankers according to claim 1, characterized in that: The cleaning assembly includes a connecting rod (14) and a cleaning brush (15). The connecting rod (14) is connected to the rotating cover (5), and the cleaning brush (15) is fixed to the end of the connecting rod (14) and contacts the inner surface of the filter ring (7).

4. The combustible gas detection device for oil tankers according to claim 3, characterized in that: The inner side of the air duct (6) is provided with a two-stage filter structure (9), and the air inlet pipe (4) slides through the rotating cover (5) and extends to the inner side of the air duct (6). The connecting frame includes a connecting ring (17) and multiple fixing rods (8). The connecting ring (17) is vertically slidably sleeved on the outside of the air inlet pipe (4). Multiple fixing rods (8) are provided, and the multiple fixing rods (8) are equidistantly connected between the connecting ring (17) and the filter ring (7). A compression spring (16) is fixed between the connecting ring (17) and the gas detection device body (1).

5. The combustible gas detection device for oil tankers according to claim 4, characterized in that: The inner surface of the connecting ring (17) is integrally provided with a limiting slider (18), and the outer surface of the air intake pipe (4) is provided with a limiting groove for the limiting slider (18) to slide vertically.

6. The combustible gas detection device for oil tankers according to claim 4, characterized in that: A compression spring 2 (19) is fixed between the cleaning brush (15) and the rotating cover (5).

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