Fiber Bragg grating methane distributed detection device
By designing fixing plates, adjustment grooves, oblique blocks, elastic components and electromagnetic locks in methane detection equipment, we ensure the stable connection between the optical fiber connector and the interface, and solve the problem of insufficient equipment installation stability and operation safety, and realize the Efficient and accurate methane concentration monitoring.
Patent Information
- Application Number
- CN202421002018.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-05-10
AI Technical Summary
The existing methane detection equipment has problems of insufficient installation stability and operational safety in actual applications, making it difficult to achieve distributed, efficient and accurate methane concentration monitoring. During the assembly process, fiber Bragg grating technology is prone to disconnection due to accidental touch or bumps of personnel, and methane cannot be monitored in time.
A distributed detection device for optical fiber Bragg grating methane is designed. Through the synergy of components such as fixing plates, adjustment grooves, oblique blocks, elastic components and electromagnetic locks, it ensures that the optical fiber connector head is tight and stable to the interface, and prevents non-workers from accidentally touching it. Causes the connection to loosen or disengage.
Effectively prevents loosening or disconnection caused by accidental contact by non-staff or other unexpected factors, greatly enhances the stability and safety of the equipment, improves the maintenance and replacement efficiency of the equipment, and achieves high sensitivity and good stability. methane gas concentration detection.
Smart Images
Figure CN222529222U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of methane detection devices, in particular to a fiber Bragg grating methane distributed detection device. Background Art
[0002] As we all know, existing methane detection equipment has some limitations in practical applications, such as insufficient installation stability and operational safety, and difficulty in achieving distributed, efficient and accurate methane concentration monitoring. Traditional methane sensors may become unstable or even disconnected due to human error, affecting the continuity and accuracy of the monitoring system. In addition, for the distributed detection of methane gas in large areas or long-distance pipelines, a set of devices is needed that can ensure the stable operation of each monitoring point and can be flexibly arranged.
[0003] Fiber Bragg grating technology can solve the above problems due to its good stability, anti-electromagnetic interference ability and easy implementation of distributed measurement. However, during the assembly process of existing fiber Bragg gratings, people often accidentally touch or bump into the connectors, resulting in disconnection between the connectors and the detection system, making it impossible to monitor methane in a timely manner. Therefore, it is necessary to propose a solution to this technical problem. Utility Model Content
[0004] In order to solve the above technical problems, the utility model provides a fiber Bragg grating methane distributed detection device, including a detection device, the detection device is provided with an external mechanism and a control panel, the external mechanism includes an optical fiber and a docking groove, the optical fiber is provided with a fiber Bragg grating and a connector, the fiber Bragg grating is provided with a platinum film, and there are multiple fiber Bragg gratings. The docking groove is opened on one side of the detection device, the docking groove is provided with a fan-shaped groove, the docking groove is provided with an interface, positioning grooves are opened on both sides of the docking groove, fixing plates are provided on both sides of the connector, a card groove is opened on the outer side of the fixing plate, an adjustment groove is opened at the top of the fan-shaped groove, an elastic component is provided at the top of the adjustment groove, an inclined block is provided at the bottom of the elastic component, an iron plate is provided on one side of the adjustment groove, an electromagnetic lock is provided on one side of the inclined block, a guide mechanism is provided between the iron plate and the inclined block, and there are multiple external mechanisms.
[0005] The utility model discloses a fiber Bragg grating methane distributed detection device, wherein the guide mechanism comprises a guide groove and a guide block, wherein the guide groove is arranged on one side of the iron plate, the guide block is installed on one side of the inclined block, the guide block is slidably connected to the guide groove, and the electromagnetic lock extends to one side of the guide block.
[0006] In the fiber Bragg grating methane distributed detection device of the utility model, the guide groove and the guide block are both in a T-shaped structure.
[0007] In the fiber Bragg grating methane distributed detection device of the utility model, the positioning groove is matched with the fixing plate.
[0008] In the fiber Bragg grating methane distributed detection device of the utility model, the inclined block is matched with the card slot.
[0009] In the fiber Bragg grating methane distributed detection device of the utility model, a sealing ring is arranged on one end of the connector.
[0010] The utility model provides a fiber Bragg grating methane distributed detection device, wherein the control panel comprises control buttons and a display screen.
[0011] The utility model discloses a fiber Bragg grating methane distributed detection device, wherein a maintenance cover is arranged on the top of the detection device, and the maintenance cover extends to the top of the adjustment groove.
[0012] Compared with the prior art, the utility model has the following beneficial effects: through the coordinated action of the fixing plate, the adjustment slot, the inclined block, the elastic component and the electromagnetic lock, the optical fiber connector where the optical fiber Bragg grating is located is ensured to be tightly and stably connected to the interface, which effectively prevents the connection from being loosened or disconnected due to accidental touch by non-staff or other unexpected factors, and greatly enhances the stability and safety of the equipment;
[0013] Easy installation and removal process. The optical fiber can be quickly connected and removed by simply rotating and pulling the connector, which significantly improves the efficiency of equipment maintenance and replacement.
[0014] By utilizing the physical properties of fiber Bragg gratings and combining the phenomenon that the heat released by the platinum film catalyzes the oxidation reaction of methane gas causes the grating reflection peak position to drift, an accurate correspondence between the reflection peak position and the methane concentration is established. This detection method has high sensitivity and good stability, and can accurately reflect the changes in methane gas concentration in real time.
[0015] By integrating multiple external mechanisms in the detection device, each of which is equipped with a fiber Bragg grating sensor, methane concentration data from multiple monitoring points can be obtained at the same time to form a spatially distributed monitoring network, which is of great significance for methane leak detection in large-scale areas, leakage monitoring of long-distance pipelines, and safety monitoring of various closed spaces. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;
[0017] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;
[0018] Figure 3 This utility model Figure 1 A half-section front view of the enlarged structure of the detection device;
[0019] Figure 4 This utility model Figure 1 A left-view half-section diagram of the partially enlarged structure of the detection device;
[0020] 1. Detection device; 2. Fiber Bragg grating; 3. Connector; 4. Fan-shaped groove; 5. Interface; 6. Fixing plate; 7. Elastic component; 8. Bevel block; 9. Iron plate; 10. Electromagnetic lock; 11. Guide block; 12. Sealing ring; 13. Maintenance cover; 14. Control button; 15. Display screen. DETAILED DESCRIPTION
[0021] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0022] like Figures 1 to 4 As shown, the fiber Bragg grating methane distributed detection device of the utility model comprises a detection device 1, the detection device 1 is provided with an external mechanism and a control panel, the external mechanism comprises an optical fiber and a docking groove, the optical fiber is provided with a fiber Bragg grating 2 and a connector 3, the fiber Bragg grating 2 is provided with a platinum film, the fiber Bragg grating 2 is provided with a plurality of fiber Bragg gratings, the docking groove is provided on one side of the detection device 1, the docking groove is provided with a fan-shaped groove 4, the docking groove is provided with an interface 5, positioning grooves are provided on both sides of the docking groove, and fixing plates 6 are provided on both sides of the connector 3. , a card slot is provided on the outside of the fixing plate 6, an adjustment slot is provided on the top of the fan-shaped slot 4, an elastic component 7 is provided on the top of the adjustment slot, an inclined block 8 is provided on the bottom of the elastic component 7, an iron plate 9 is provided on one side of the adjustment slot, an electromagnetic lock 10 is provided on one side of the inclined block 8, a guide mechanism is provided between the iron plate 9 and the inclined block 8, and multiple external mechanisms are provided. In this embodiment, the physical properties of the fiber Bragg grating are used, combined with the phenomenon that the heat released by the platinum film catalyzes the oxidation reaction of methane gas causes the grating reflection peak position to drift, and an accurate correspondence between the reflection peak position and the methane concentration is established. This detection method has high sensitivity and good stability, and can reflect the change of methane gas concentration in real time and accurately. By integrating multiple external mechanisms in the device, each mechanism is equipped with a fiber Bragg grating sensor, and the methane concentration data of multiple monitoring points can be obtained at the same time, forming a spatial distributed monitoring network, which is of great significance for methane leakage investigation in large-scale areas, leakage monitoring of long-distance pipelines, and safety monitoring of various closed spaces.
[0023] The utility model discloses a fiber Bragg grating methane distributed detection device, wherein the guide mechanism comprises a guide groove and a guide block 11, wherein the guide groove is arranged on one side of the iron plate 9, and the guide block 11 is installed on one side of the inclined block 8, and the guide block 11 is slidably connected to the guide groove, and the electromagnetic lock 10 extends to one side of the guide block 11, and is located in the guide groove through the guide block 11. When the inclined block 8 drives the guide block 11 to move, the guide block 11 moves linearly in the guide groove, thereby making the inclined block 8 move linearly in the adjustment groove stably.
[0024] In the fiber Bragg grating methane distributed detection device of the utility model, the guide groove and the guide block 11 are both T-shaped structures. The guide block 11 with the T-shaped structure moves linearly in the guide groove, which can effectively prevent the guide block 11 from leaving the guide groove.
[0025] In the fiber Bragg grating methane distributed detection device of the utility model, the positioning groove is adapted to the fixing plate 6. By adapting the positioning groove to the fixing plate 6, the fixing plate 6 of the connector 3 can be easily aligned with the positioning groove and inserted into the fan-shaped groove 4.
[0026] In the fiber Bragg grating methane distributed detection device of the utility model, the inclined block 8 is adapted to the card slot, and by adapting the inclined block 8 to the card slot, the inclined block 8 can be more closely pressed against the card slot.
[0027] In the fiber Bragg grating methane distributed detection device of the utility model, a sealing ring 12 is provided on one end of the connector 3, and the sealing ring 12 can improve the sealing performance between the connector 3 and the docking groove.
[0028] The fiber Bragg grating methane distributed detection device of the utility model has a control panel including control buttons 14 and a display screen 15 , which facilitate the operation of the detection device 1 .
[0029] In the fiber Bragg grating methane distributed detection device of the utility model, a maintenance cover 13 is provided at the top of the detection device 1, and the maintenance cover 13 extends to the top of the adjustment slot. The maintenance cover 13 is used to facilitate maintenance and repair of the electromagnetic lock 10 and the elastic component 7 in the adjustment slot.
[0030] The fiber Bragg grating methane distributed detection device of the utility model, when working, aligns the optical fiber provided with the fiber Bragg grating 2 through the fixing plate 6 of the connector 3 and inserts it into the positioning groove, then the connector 3 passes through the adjustment groove and abuts against the interface 5, at this time the fixing plate 6 is located in the fan-shaped groove 4, the inclined block 8 in the adjustment groove is squeezed by the fixing plate 6 and moves upward, the elastic component 7 is squeezed and contracted by the inclined block 8, after the fixing plate 6 abuts against the fan-shaped groove 4, the inclined block 8 is just aligned with the card slot of a fixing plate 6, and then the inclined block 8 is supported by the elastic component 7, the inclined block 8 moves linearly downward in the adjustment groove through the guide mechanism, the inclined block 8 abuts against the card slot, and then the electromagnetic lock 10 is controlled to adsorb the iron plate 9, so that the inclined block 8 is firmly fixed, effectively preventing non-staff from accidentally touching the optical fiber, causing the connector 3 to be separated from the interface 5, and the installation is reliable, through the fiber Bragg grating 2 and the platinum film, the platinum film is used to make the methane in the gas to be measured The oxidation reaction releases heat, causing the reflection peak position of the fiber Bragg grating 2 to drift. The linear relationship between the reflection peak position drift of the fiber Bragg grating 2 and the methane concentration can be used to measure the methane gas concentration by measuring the grating reflection peak position drift. Multiple fiber Bragg gratings 2 of the optical fiber in multiple external mechanisms can more efficiently detect methane. When the connector 3 is removed as needed, the electromagnetic lock 10 is closed, and then the connector 3 is rotated. The connector 3 drives the fixed plate 6 to rotate an angle, and the fixed plate 6 squeezes the inclined block 8, which moves upward, and then the connector 3 is flipped. At this time, the inclined block 8 can only rest on the other side of the fixed plate 6 and will not rest on the card slot. The connector 3 can be removed by pulling the connector 3. The optical fiber with the fiber Bragg grating 2 can be quickly connected externally through the external mechanism. By opening the electromagnetic lock 10, it can effectively prevent people from accidentally touching and pulling the connector 3, causing the connector 3 to detach from the interface 5.
[0031] The installation, connection or setting methods of the fiber Bragg grating methane distributed detection device of the present invention are all common mechanical methods, and can be implemented as long as they can achieve their beneficial effects; technicians in this industry only need to install and operate it according to the accompanying instruction manual.
[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A fiber Bragg grating methane distributed detection device, comprising a detection device (1), wherein the detection device (1) is provided with an external mechanism and a control panel, characterized in that: The external connection mechanism comprises an optical fiber and a docking groove, wherein a fiber Bragg grating (2) and a connector (3) are provided on the optical fiber, a platinum film is provided on the fiber Bragg grating (2), and the fiber Bragg grating (2) is provided with a plurality of fiber Bragg gratings (2). The docking groove is provided on one side of the detection device (1), a fan-shaped groove (4) is provided on the docking groove, an interface (5) is provided on the docking groove, positioning grooves are provided on both sides of the docking groove, fixing plates (6) are provided on both sides of the connector (3), a card slot is provided on the outer side of the fixing plate (6), an adjustment groove is provided at the top end of the fan-shaped groove (4), an elastic component (7) is provided at the top end of the adjustment groove, an inclined block (8) is provided at the bottom end of the elastic component (7), an iron plate (9) is provided on one side of the adjustment groove, an electromagnetic lock (10) is provided on one side of the inclined block (8), a guide mechanism is provided between the iron plate (9) and the inclined block (8), and the external connection mechanism is provided with a plurality of them.
2. The fiber Bragg grating methane distributed detection device according to claim 1, characterized in that: The guide mechanism comprises a guide groove and a guide block (11), wherein the guide groove is provided on one side of the iron plate (9), the guide block (11) is installed on one side of the inclined block (8), the guide block (11) is slidably connected to the guide groove, and the electromagnetic lock (10) extends to one side of the guide block (11).
3. The fiber Bragg grating methane distributed detection device according to claim 2, characterized in that: The guide groove and the guide block (11) are both in a T-shaped structure.
4. The fiber Bragg grating methane distributed detection device according to claim 3, characterized in that: The positioning groove is matched with the fixing plate (6).
5. The fiber Bragg grating methane distributed detection device according to claim 4, characterized in that: The inclined block (8) is adapted to the clamping slot.
6. The fiber Bragg grating methane distributed detection device according to claim 5, characterized in that: A sealing ring (12) is provided on one end of the connector (3).
7. The fiber Bragg grating methane distributed detection device according to claim 6, characterized in that: The control panel comprises control buttons (14) and a display screen (15).
8. The fiber Bragg grating methane distributed detection device according to claim 7, characterized in that: A maintenance cover (13) is provided at the top end of the detection device (1), and the maintenance cover (13) extends to the top end of the adjustment slot.