Distributed gas sensor with multiple air cavities

Abstract

The utility model discloses a distributed gas sensor with a plurality of air cavities, which belongs to the technical field of gas sensors and is characterized in that two ends of a first sensor shell and two ends of a second sensor shell are respectively provided with axially symmetrical connecting ends, and the surfaces of the symmetrical connecting ends are respectively connected with a sealing cover and an end cover through threads; according to the distributed gas sensor with the multiple air cavities, through the arrangement of the multiple supporting plates and the connecting sleeves, the multiple air cavity pipes can be rapidly assembled, so that the multiple air cavities are formed, assembling is firm, the air tightness of the connecting positions is greatly improved, the gas detection accuracy is guaranteed, and the gas detection efficiency is improved. Through the arrangement of the sealing cover, the end cover, the first sensor shell and the second sensor shell, modular assembly of the distributed gas sensor is facilitated, extrusion to the internal air cavity pipe can be avoided, and the assembly efficiency and the assembly flexibility are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas sensors, and more specifically to a distributed gas sensor with multiple air cavities. Background Art

[0002] Gas sensing is one of the important parameters for environmental monitoring. Distributed gas sensors with multiple air cavities are assembled into multiple air cavities through several hollow optical fibers. However, the sealing effect may not be guaranteed at the joints, and the connection and assembly process is inefficient and has poor assembly flexibility.

[0003] For example, announcement number CN221100505U discloses a distributed gas sensor with multiple air cavities, including a signal generator, a laser driver, a semiconductor laser, a circulator and a photodetector connected in sequence; the circulator is also connected to a gas sensing module for detecting the gas to be measured, and at least two gas sensing modules are provided and connected in sequence; the gas sensing module includes a single-mode optical fiber, a hollow-core optical fiber and a single-mode optical fiber coupled in sequence.

[0004] It can be seen from the above-mentioned public scheme that multiple air cavities are composed of multiple single-mode optical fibers and hollow-core optical fibers, and the connection between the single-mode optical fiber and the hollow-core optical fiber is positioned by an upper clamp and a lower clamp. Not only can the air tightness of the connection not be guaranteed, but also when the clamp is positioned, if the clamp is clamped too tightly, it is easy to cause deformation of the air optical fiber at the connection, and if the clamp is clamped too loosely, it is easy to cause loosening and falling off, which greatly reduces the assembly efficiency and reduces the assembly flexibility. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a distributed gas sensor with multiple air cavities. The distributed gas sensor with multiple air cavities can quickly assemble multiple air cavity tubes by setting multiple support plates and connecting sleeves, thereby forming multiple air cavities. Not only is the assembly firm, but also the air tightness of the connection is greatly improved, thereby ensuring the accuracy of gas detection. In addition, the modular assembly of the distributed gas sensor is facilitated by the setting of a sealing cover, an end cover, a sensor housing one and a sensor housing two, which can avoid squeezing of the internal air cavity tubes and greatly improve the assembly efficiency and assembly flexibility.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A distributed gas sensor with multiple air cavities, comprising a sensor housing 1 and a sensor housing 2, wherein both ends of the sensor housing 1 and the sensor housing 2 are provided with axially symmetrical connecting ends, and the surfaces of the symmetrical connecting ends are respectively connected with sealing covers and end covers by threads, and the side surfaces of the end covers are fixedly sleeved with exhaust pipes, and the inner sides of the sensor housing 1 and the sensor housing 2 are provided with mounting grooves, and the inner walls of the mounting grooves are contact-connected with support plates, and symmetrical connecting sleeves are provided on both sides of the support plates, and one end of the connecting sleeve is provided with a connecting groove, and the inner wall of the connecting groove is connected with an air cavity tube by threads, and the air cavity tube is provided with an air cavity inside, and the surface of the air cavity tube is provided with an intake pipe and An exhaust pipe, an exhaust valve is provided on the surface of the exhaust pipe, one end of the air inlet pipe is connected to a clamping pipe through a thread, a clamping block is fixedly sleeved on the surface of the clamping pipe, one end of the clamping pipe is detachably connected to a gas delivery pipe, and the distributed gas sensor with multiple air cavities can quickly assemble multiple air cavity tubes through the multiple support plates and connecting sleeves, thereby forming multiple air cavities, which not only ensures firm assembly, but also greatly improves the air tightness of the connection, ensures the accuracy of gas detection, and facilitates the modular assembly of the distributed gas sensor through the sealing cover, end cover, sensor housing one and sensor housing two, which can avoid squeezing the internal air cavity tube, and greatly improves the assembly efficiency and assembly flexibility.

[0008] Furthermore, the outer sides of the end cover and the sealing cover are provided with anti-slip parts, the inner sides of the end cover and the sealing cover are provided with sealing grooves, the inner walls of the sealing grooves are fixedly connected with sealing plugs, and the end cover and the sealing cover are convenient for fixing the closed position of sensor housing one and sensor housing two, and are convenient for disassembly and assembly.

[0009] Furthermore, the cross-sectional shapes of the sensor housing 1, the sensor housing 2 and the connection end are all semicircular, the outer side of the connection end is provided with an external thread, and the inner wall of the sealing groove is provided with an internal thread, thereby ensuring the firmness of the connection.

[0010] Furthermore, both ends of the sensor housing 1 and the sensor housing 2 are provided with sealing rings, the sealing rings are made of elastic sealing rubber, and the surface of the sealing ring is in contact and extrusion with the inside of the sealing groove to ensure the sealing of the connection.

[0011] Furthermore, the surfaces of the end cover and the sealing cover are fixedly sleeved with anti-collision sleeves, the surface of the anti-collision sleeves is provided with anti-slip strips, the anti-collision sleeves are made of buffering and shock-absorbing rubber, which can prevent the sensor from falling and colliding, and the anti-slip strips can prevent the sensor from rolling.

[0012] Furthermore, the sensor housing 1 and the sensor housing 2 are clamped to each other, and a sealing gasket is clamped on the clamping surface to ensure the sealing of the closed part.

[0013] Furthermore, the outer contour of the anti-slip portion is a polygonal shape, which is convenient for rotation by a wrench.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] (1) This solution can quickly assemble multiple air cavity tubes by providing multiple support plates and connecting sleeves, thereby forming multiple air cavities. This not only ensures a firm assembly, but also greatly improves the air tightness of the connection, thereby ensuring the accuracy of gas detection.

[0016] (2) This solution facilitates modular assembly of the distributed gas sensor by providing a sealing cover, an end cover, a sensor housing 1 and a sensor housing 2, thereby avoiding squeezing of the internal air cavity tube and greatly improving assembly efficiency and assembly flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0018] Figure 2 It is a top view of the sensor housing 2 and the card block installation structure of the utility model;

[0019] Figure 3 for Figure 2 A side view of the support plate and the connecting sleeve installation structure;

[0020] Figure 4 It is a side view of the end cover structure of the utility model.

[0021] Description of the numbers in the figure:

[0022] 1 sensor housing 1, 2 sensor housing 2, 21 mounting groove, 22 connecting end, 23 sealing ring, 24 sealing pad, 3 sealing cover, 4 end cover, 41 anti-slip part, 42 exhaust pipe, 43 anti-collision sleeve, 44 sealing plug, 45 sealing groove, 5 air cavity tube, 51 intake pipe, 52 block, 53 clamping tube, 54 exhaust pipe, 55 exhaust valve, 6 support plate, 61 connecting sleeve, 62 connecting groove, 7 air delivery pipe. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] See also Figure 1-4 A distributed gas sensor with multiple air cavities includes a sensor housing 1 and a sensor housing 2. The sensor is also provided with components such as a signal generator, a laser driver and a semiconductor laser. Its composition structure and working principle are well known to those skilled in the art and will not be described in detail herein. The sensor housing 1 and the sensor housing 2 are clamped together, and a sealing gasket 24 is clamped on the clamping surface to ensure the sealing of the closed part. Both ends of the sensor housing 1 and the sensor housing 2 are provided with axially symmetrical connecting ends 22, and the surfaces of the symmetrical connecting ends 22 are respectively connected with sealing covers 3 and end covers 4 through threads. The side of the end cover 4 is fixedly sleeved with an exhaust pipe 42, and an exhaust pump is provided at one end of the exhaust pipe 42. The exhaust pipe 42 is convenient for extracting the gas discharged from the housing after the detection is completed. The sensor housing 1 The inner sides of the sensor housing 2 are both provided with mounting grooves 21, the inner walls of the mounting grooves 21 are in contact with and connected to a support plate 6, symmetrical connecting sleeves 61 are provided on both sides of the support plate 6, one end of the connecting sleeve 61 is provided with a connecting groove 62, the inner wall of the connecting groove 62 is connected to an air cavity tube 5 through a thread, the interior of the air cavity tube 5 is provided with an air cavity, an air inlet pipe 51 and an exhaust pipe 54 are provided on the surface of the air cavity tube 5, an exhaust valve 55 is provided on the surface of the exhaust pipe 54, one end of the air inlet pipe 51 is connected to a clamping tube 53 through a thread, a clamping block 52 is fixedly sleeved on the surface of the clamping tube 53, one end of the clamping tube 53 is detachably connected to an air supply pipe 7, the air pipe 7 is a hose, and one end is connected to an air pump, so as to facilitate the delivery of air to the sensor for detection, which belongs to the prior art, and the composition structure and working principle of the air pump are well known to those skilled in the art.

[0026] The outer sides of the end cover 4 and the sealing cover 3 are both provided with an anti-slip portion 41, and the inner sides of the end cover 4 and the sealing cover 3 are both provided with a sealing groove 45, and the inner wall of the sealing groove 45 is fixedly connected with a sealing plug 44. The end cover 4 and the sealing cover 3 are convenient for fixing the closed position of the sensor housing 1 and the sensor housing 2, and are convenient for disassembly and assembly. The cross-sectional shapes of the sensor housing 1, the sensor housing 2 and the connecting end 22 are all semicircular, and the outer side of the connecting end 22 is provided with an external thread, and the inner wall of the sealing groove 45 is provided with an internal thread, which ensures the firmness of the connection. The outer contour of the anti-slip portion 41 is polygonal, which is convenient for rotation by a wrench.

[0027] Both ends of the sensor housing 1 and the sensor housing 2 are provided with sealing rings 23, which are made of elastic sealing rubber. The surface of the sealing ring 23 is in contact and extrusion with the inside of the sealing groove 45 to ensure the sealing of the connection. The surfaces of the end cover 4 and the sealing cover 3 are fixedly sleeved with anti-collision sleeves 43, and the surface of the anti-collision sleeves 43 is provided with anti-slip strips. The anti-collision sleeves 43 are made of buffering and shock-absorbing rubber to prevent the sensor from falling and colliding, and the anti-slip strips can prevent the sensor from rolling.

[0028] When assembling the distributed gas sensor with multiple air cavities, the two ends of the air cavity tube 5 can be tightened clockwise with the connecting sleeve 61 provided on the support plate 6, and then the air inlet pipe 51 and the clamping pipe 53 are connected, and then the sensor housing 1 and the sensor housing 2 are closed, so that the inner wall of the support plate 6 is in contact and squeezed with the inner wall of the mounting groove 21, and at the same time, the plane provided by the support plate 6 and the inner wall of the mounting groove 21 form an exhaust gap, and the clamping pipe 53 is clamped by the housing, and then the sealing cover 3 and the end cover 4 are smoothly connected to the two ends of the closed housing, and then one end of the air supply pipe 7 is connected to one end of the clamping pipe 53. When in use, external air enters the air inlet pipe 51 through the air supply pipe 7, and then enters The air is detected in the air cavity tube 5. After the detection is completed, the intelligent exhaust valve 55 is opened to discharge the air into the installation groove 21, and then the air pump at one end of the exhaust pipe 42 is operated to exhaust air to extract all the air after the detection. Through the provision of multiple support plates 6 and connecting sleeves 61, multiple air cavity tubes 5 can be quickly assembled to form multiple air cavities, which not only has a firm assembly, but also greatly improves the air tightness of the connection, thereby ensuring the accuracy of gas detection, and through the provision of the sealing cover 3, the end cover 4, the sensor housing 1 and the sensor housing 2 2, the modular assembly of the distributed gas sensor is facilitated, which can avoid squeezing the internal air cavity tube 5, and greatly improve the assembly efficiency and assembly flexibility.

[0029] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A distributed gas sensor with multiple air cavities, comprising a sensor housing 1 (1) and a sensor housing 2 (2), characterized in that: Both ends of the sensor housing 1 (1) and the sensor housing 2 (2) are provided with axially symmetrical connecting ends (22), and the surfaces of the symmetrical connecting ends (22) are respectively connected with a sealing cover (3) and an end cover (4) by threads, and the side of the end cover (4) is fixedly sleeved with an exhaust pipe (42), and the inner sides of the sensor housing 1 (1) and the sensor housing 2 (2) are provided with mounting grooves (21), and the inner walls of the mounting grooves (21) are in contact with and connected with a support plate (6), and both sides of the support plate (6) are provided with symmetrical connecting sleeves (61), and the connecting sleeves (61) are provided with a plurality of connecting sleeves (62) and a plurality of connecting sleeves (63) are provided with the connecting sleeves (64). One end of the sleeve (61) is provided with a connecting groove (62), the inner wall of the connecting groove (62) is connected to an air cavity tube (5) via a thread, an air cavity is provided inside the air cavity tube (5), an air inlet tube (51) and an exhaust tube (54) are provided on the surface of the air cavity tube (5), an exhaust valve (55) is provided on the surface of the exhaust tube (54), one end of the air inlet tube (51) is connected to a clamping tube (53) via a thread, a clamping block (52) is fixedly sleeved on the surface of the clamping tube (53), and one end of the clamping tube (53) is detachably connected to an air supply tube (7).

2. A distributed gas sensor with multiple air cavities according to claim 1, characterized in that: The outer sides of the end cover (4) and the sealing cover (3) are both provided with anti-slip portions (41), the inner sides of the end cover (4) and the sealing cover (3) are both provided with sealing grooves (45), and the inner walls of the sealing grooves (45) are fixedly connected with sealing plugs (44).

3. A distributed gas sensor with multiple air cavities according to claim 2, characterized in that: The cross-sectional shapes of the sensor housing 1 (1), the sensor housing 2 (2) and the connecting end (22) are all semicircular, the outer side of the connecting end (22) is provided with an external thread, and the inner wall of the sealing groove (45) is provided with an internal thread.

4. A distributed gas sensor with multiple air cavities according to claim 1, characterized in that: Both ends of the sensor housing 1 (1) and the sensor housing 2 (2) are provided with sealing rings (23), the sealing rings (23) are made of elastic sealing rubber, and the surface of the sealing rings (23) is in contact and extrusion with the inside of the sealing groove (45).

5. A distributed gas sensor with multiple air cavities according to claim 1, characterized in that: The surfaces of the end cover (4) and the sealing cover (3) are both fixedly sleeved with an anti-collision sleeve (43), the surface of the anti-collision sleeve (43) is provided with an anti-slip strip, and the anti-collision sleeve (43) is made of buffering and shock-absorbing rubber.

6. A distributed gas sensor with multiple air cavities according to claim 1, characterized in that: The sensor housing one (1) and the sensor housing two (2) are mutually clamped, and a sealing gasket (24) is clamped on the clamping surfaces.

7. A distributed gas sensor with multiple air cavities according to claim 2, characterized in that: The outer contour of the anti-slip portion (41) is in the shape of a polygon.

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