Laser combustible gas detector

Abstract

The utility model relates to the technical field of laser combustible gas detectors, in particular to a laser combustible gas detector which comprises an inspection robot, the top of the inspection robot is rotatably connected with a rotating drum, and the inner wall of the rotating drum is slidably connected with a sliding block; the shielding mechanism is arranged on the surface of the sliding block; the shielding mechanism comprises shielding frames fixedly connected to the two sides of the sliding block, the inner top walls of the shielding frames are fixedly connected with laser detectors, the upper ends of the surfaces of the shielding frames are fixedly connected with connecting blocks, sunshade blocks are hinged to the front ends of the shielding frames, and the two sides of the inner walls of the shielding frames are slidably connected with sun isolation blocks. According to the device, the shielding frame, the sun-shading block and the sun-isolating block are utilized, so that the surface of the laser detector is protected, sunlight is prevented from directly irradiating the mirror surface of the laser detector, and the accuracy of the laser detector for detecting the concentration of combustible gas in a natural gas station is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser combustible gas detectors, and particularly relates to a laser combustible gas detector. Background Technique

[0002] A laser combustible gas detector is a device that uses laser technology to detect the concentration of combustible gases in the environment. This type of detector is usually used in industrial environments, petrochemical industries, mines, natural gas pipelines, etc. to ensure the safety of the working environment.

[0003] After retrieval, the Chinese patent "A detector for intelligent patrol robots" with the authorization announcement number "CN219871000U" realizes the patrol of the combustible gas concentration by the laser methane telemeter in the natural gas station through the patrol robot main body. Through the transmission screw, the sleeve block, the worm wheel and the transmission worm, the lifting and rotation of the laser methane telemeter during detection are realized, and the detection range of the laser methane telemeter is improved.

[0004] During the patrol of the laser methane telemeter driven by the above-mentioned patrol robot main body in the natural gas station, the direct sunlight intensity during the day is relatively high, which easily causes the direct sunlight to shine on the mirror surface of the laser methane telemeter, thereby affecting the accuracy of the laser methane telemeter in detecting the concentration of combustible gases.

[0005] Therefore, a laser combustible gas detector is proposed to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a laser combustible gas detector to solve the above problems, and improve the problem that the direct sunlight shines on the mirror surface of the laser methane telemeter, thereby affecting the accuracy of the laser methane telemeter in detecting the concentration of combustible gases.

[0007] The utility model realizes the above purpose through the following technical solutions. A laser combustible gas detector includes: a patrol robot, a rotating cylinder is rotatably connected to the top of the patrol robot, and a slider is slidably connected to the inner wall of the rotating cylinder; a shielding mechanism, the shielding mechanism is arranged on the surface of the slider; wherein, the shielding mechanism includes shielding frames fixedly connected to both sides of the slider, a laser detector is fixedly connected to the inner top wall of the shielding frame, a connecting block is fixedly connected to the upper end of the surface of the shielding frame, a sunshade block is hinged to the front end of the shielding frame, both sides of the inner wall of the shielding frame are slidably connected with sun-blocking blocks, and a fixing block is fixedly connected to one side of the sun-blocking block. By using the shielding frame, the sunshade block and the sun-blocking block, the protection of the surface of the laser detector is realized, the direct sunlight is blocked from shining on the mirror surface of the laser detector, and the accuracy of the laser detector in detecting the concentration of combustible gases in the natural gas station is improved.

[0008] Preferably, one side of one of the solar-isolating blocks is provided with circular holes distributed in equal rows, and one side of the shielding frame is slidably connected with a round rod, and the surface of the round rod is snapped into the inner wall of one of the circular holes. The round rod and the circular hole are used to position the solar-isolating block in the shielding frame, ensuring that the solar-isolating block stably blocks direct sunlight from shining on the mirror surface of the laser detector.

[0009] Preferably, connecting rods are fixedly connected to opposite sides of the two sunshade blocks, and the surfaces of the connecting rods are provided with annularly distributed card grooves, wherein a card block is card-engaged on the inner wall of one of the card grooves.

[0010] Preferably, a spring is fixedly connected to the top of the card block, and the top of the spring is fixedly connected to the bottom of the connecting block. The spring, the card block and the card slot are used to position the connecting rod, ensure the stability of the tilt of the sunshade block in the shielding frame, and ensure the effect of shielding the laser detector from direct sunlight.

[0011] Preferably, two balls are rollingly connected to the inner wall of the connection block, and the surfaces of the balls are rollingly connected to the surface of the drum.

[0012] Preferably, the top of the block is fixedly connected to a limit rod, and the surface of the limit rod is slidably connected to the inner wall of the connection block. The limit rod is used to limit the movement of the block, ensuring that the spring pushes the block to not deviate when it moves downward.

[0013] Preferably, a limiting hole is provided on one side of the shielding frame, and the surface of the solar isolation block is slidably connected to the inner wall of the limiting hole. The limiting hole is used to limit the moving distance of the solar isolation block, thereby preventing the solar isolation block from escaping from the shielding frame during movement.

[0014] Preferably, the shielding frame, the sunshade block and the sun-isolating block are all stainless steel components, and UV blocking films are pasted on the surfaces of the shielding frame, the sunshade block and the sun-isolating block.

[0015] The beneficial effects of the utility model are:

[0016] 1. The shielding frame, sunshade block and sun-isolating block are used to protect the surface of the laser detector, block direct sunlight from shining on the mirror of the laser detector, and improve the accuracy of the laser detector in detecting the concentration of combustible gas in the natural gas station;

[0017] 2. The round rod and the round hole are used to position the sunshade block in the shielding frame, ensuring that the sunshade block can stably block direct sunlight from the mirror of the laser detector. The spring, the card block and the card slot are used to position the connecting rod, ensuring the stable tilt of the sunshade block in the shielding frame, ensuring the effect of shielding the laser detector from direct sunlight. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1Schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 Schematic diagram of the shielding mechanism structure of the present utility model;

[0020] Figure 3 Cross-sectional view of the shielding frame of the present utility model;

[0021] Figure 4 is Figure 3 The enlarged view of A in

[0022] In the figure: 1, inspection robot; 2, rotating cylinder; 3, slider; 4, shielding mechanism; 41, shielding frame; 42, laser detector; 43, sunshade block; 44, sunlight-blocking block; 45, fixing block; 46, round hole; 47, round rod; 48, connecting block; 49, connecting rod; 410, card slot; 411, limiting hole; 412, clamping block; 413, spring; 414, ball; 415, limiting rod. Specific implementation manner

[0023] 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 the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] During specific implementation: As Figures 1-4 shown, a laser combustible gas detector includes: an inspection robot 1, a rotating cylinder 2 is rotatably connected to the top of the inspection robot 1, and a slider 3 is slidably connected to the inner wall of the rotating cylinder 2; a shielding mechanism 4, the shielding mechanism 4 is arranged on the surface of the slider 3; wherein, the shielding mechanism 4 includes a shielding frame 41 fixedly connected to both sides of the slider 3, a laser detector 42 is fixedly connected to the inner top wall of the shielding frame 41, a connecting block 48 is fixedly connected to the upper end of the surface of the shielding frame 41, a sunshade block 43 is hinged to the front end of the shielding frame 41, sunlight-blocking blocks 44 are slidably connected to both sides of the inner wall of the shielding frame 41, a fixing block 45 is fixedly connected to one side of the sunlight-blocking block 44, two balls 414 are rotatably connected to the inner wall of the connecting block 48, the surface of the balls 414 is rotatably connected to the surface of the rotating cylinder 2, a limiting hole 411 is opened on one side of the shielding frame 41, the surface of the sunlight-blocking block 44 is slidably connected to the inner wall of the limiting hole 411, the shielding frame 41, the sunshade block 43 and the sunlight-blocking block 44 are all stainless steel components, and a UV blocking film is pasted on the surfaces of the shielding frame 41, the sunshade block 43 and the sunlight-blocking block 44.

[0025] A lead screw is rotatably connected to the inner wall of the rotary drum 2, the inner wall of the slider 3 is threadedly connected to the surface of the lead screw, the top end of the rotary drum 2 is fixedly connected to a first servo motor, and the output shaft of the first servo motor is fixedly connected to the top end of the lead screw. The lower end of the surface of the rotary drum 2 is fixedly connected to a worm gear, and a worm is meshed with the surface of the worm gear. One end of the worm is fixedly connected to a second servo motor, and the surface of the second servo motor is fixedly connected to the inner wall of the inspection robot 1;

[0026] When detecting the concentration of combustible gas in the natural gas station during the day, according to the sunlight intensity of the day, adjust the appropriate inclination angle of the sunshade block 43 on the shielding frame 41 and pull the sunshade block 44 to move to an appropriate position in the shielding frame 41. Manually turn on the inspection robot 1 and the laser detector 42. The inspection robot 1 walks in the natural gas station. Since UV blocking films are pasted on the surfaces of the shielding frame 41, the sunshade block 43 and the sunshade block 44, the shielding frame 41, the sunshade block 43 and the sunshade block 44 can well block the direct sunlight from shining on the mirror surface of the laser detector 42, avoiding the accuracy of the laser detector 42 detecting the concentration of combustible gas caused by direct sunlight. At this time, the laser detector 42 emits a laser beam with a specific wavelength. When the laser beam passes through the space containing methane molecules, the methane molecules will absorb the laser with a specific wavelength, resulting in a change in the laser intensity. The laser detector 42 receives the reflected laser and determines the presence and concentration of the gas by analyzing the change in light intensity. The detected information is sent to the control system through the laser detector 42 for the staff to view the data of the concentration of combustible gas in the natural gas station at this time.

[0027] When detecting the concentration of combustible gas in the natural gas station at night, push the sunshade block 43 so that the sunshade block 43 forms a 90-degree angle with the top of the shielding frame 41, and push the sunshade block 44 to retract it into the shielding frame 41. At this time, the inspection robot 1 drives the laser detector 42 to detect the natural gas station.

[0028] As Figure 3 shown, a series of equally spaced round holes 46 are formed on one side of one of the sunshade blocks 44, and a round rod 47 is slidably connected to one side of the shielding frame 41, and the surface of the round rod 47 is clamped to the inner wall of one of the round holes 46.

[0029] Push the round rod 47 to move the round rod 47 in the shielding frame 41 and clamp it in the corresponding round hole 46 to position the sunshade block 44 in the shielding frame 41.

[0030] As Figure 4As shown in the figure, connecting rods 49 are fixedly connected to the opposite sides of two sunshade blocks 43. Annularly distributed card slots 410 are formed on the surfaces of the connecting rods 49. A clamping block 412 is clamped to the inner wall of one of the card slots 410. A spring 413 is fixedly connected to the top of the clamping block 412. The top end of the spring 413 is fixedly connected to the bottom of a connecting block 48. A limiting rod 415 is fixedly connected to the top of the clamping block 412. The surface of the limiting rod 415 is slidably connected to the inner wall of the connecting block 48. The elastic force of the spring 413 pushes the clamping block 412 to be clamped in the corresponding card slot 410, positioning the sunshade block 43 in the shielding frame 41.

[0031] When the present utility model is in use, according to the sunlight intensity of the day, the appropriate inclination angle of the sunshade block 43 on the shielding frame 41 is adjusted. The elastic force of the spring 413 pushes the clamping block 412 to be clamped in the corresponding card slot 410, positioning the sunshade block 43 in the shielding frame 41. The sunshading block 44 is pulled to move to a suitable position in the shielding frame 41. The round rod 47 is pushed, so that the round rod 47 moves in the shielding frame 41 and is clamped in the corresponding round hole 46, positioning the sunshading block 44 in the shielding frame 41. The inspection robot 1 and the laser detector 42 are manually turned on. The inspection robot 1 walks in the natural gas station. Since UV blocking films are pasted on the surfaces of the shielding frame 41, the sunshade block 43 and the sunshading block 44, the shielding frame 41, the sunshade block 43 and the sunshading block 44 can well block the direct sunlight from shining on the mirror surface of the laser detector 42. At this time, the laser detector 42 emits a laser beam with a specific wavelength. When the laser beam passes through the space containing methane molecules, the methane molecules will absorb the laser with a specific wavelength, resulting in a change in the laser intensity. The laser detector 42 receives the reflected laser and determines the presence and concentration of the gas by analyzing the change in the light intensity. The detected information is sent by the laser detector 42 to the control system for the staff to view the data of the concentration of combustible gas in the natural gas station at this time.

[0032] It should be noted that in the above description, the inspection robot 1, the laser detector 42, the spring 413, etc. are all devices with relatively mature applications in the prior art. The specific models can be selected according to actual needs. At the same time, the inspection robot 1 and the laser detector 42 can be powered by an internal power supply or by mains power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0033] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A laser combustible gas detector, characterized in that, Including: An inspection robot (1), a rotating cylinder (2) is rotatably connected to the top of the inspection robot (1), and a slider (3) is slidably connected to the inner wall of the rotating cylinder (2); A shielding mechanism (4), the shielding mechanism (4) is arranged on the surface of the slider (3); Among them, the shielding mechanism (4) includes shielding frames (41) fixedly connected to both sides of the slider (3), a laser detector (42) is fixedly connected to the inner top wall of the shielding frame (41), a connecting block (48) is fixedly connected to the upper end of the surface of the shielding frame (41), a sunshade block (43) is hinged to the front end of the shielding frame (41), both sides of the inner wall of the shielding frame (41) are slidably connected with sun-blocking blocks (44), and a fixing block (45) is fixedly connected to one side of the sun-blocking block (44).

2. The laser combustible gas detector according to claim 1, wherein: A series of equally spaced circular holes (46) are formed on one side of one of the sun-blocking blocks (44), a round rod (47) is slidably connected to one side of the shielding frame (41), and the surface of the round rod (47) is clamped to the inner wall of one of the circular holes (46).

3. The laser combustible gas detector according to claim 1, characterized in that: Connecting rods (49) are fixedly connected to the opposite sides of the two sunshade blocks (43), annularly distributed clamping grooves (410) are formed on the surface of the connecting rod (49), and a clamping block (412) is clamped to the inner wall of one of the clamping grooves (410).

4. The laser combustible gas detector according to claim 3, wherein: A spring (413) is fixedly connected to the top of the clamping block (412), and the top of the spring (413) is fixedly connected to the bottom of the connecting block (48).

5. A laser combustible gas detector according to claim 1, characterized in that: Two balls (414) are rotatably connected to the inner wall of the connecting block (48), and the surface of the balls (414) is rotatably connected to the surface of the rotating cylinder (2).

6. The laser combustible gas detector according to claim 3, wherein: A limiting rod (415) is fixedly connected to the top of the clamping block (412), and the surface of the limiting rod (415) is slidably connected to the inner wall of the connecting block (48).

7. The laser combustible gas detector according to claim 1, wherein: A limiting hole (411) is formed on one side of the shielding frame (41), and the surface of the sun-blocking block (44) is slidably connected to the inner wall of the limiting hole (411).

8. The laser combustible gas detector according to claim 1, characterized in that: The shielding frames (41), the sunshade blocks (43) and the sun-blocking blocks (44) are all made of stainless steel components, and UV blocking films are pasted on the surfaces of the shielding frames (41), the sunshade blocks (43) and the sun-blocking blocks (44).

Images