A portable verification device for combustible gas detection

Abstract

The utility model relates to combustible gas detection device technical field especially, it relates to a kind of portable calibrating device for combustible gas detection, including combustible gas detector and flip cover;Combustible gas detector is rotatably connected with flip cover;Still including connecting pipe, connecting ring and gas head etc.;Combustible gas detector is connected with connecting pipe;Connecting pipe is connected with connecting ring, and slide bar one is fixedly connected on connecting ring;Connecting ring is slidably connected with gas head by slide bar one, and slide bar two is slidably connected with gas head on gas head, and slide bar two and connecting ring are slidably connected;Several clamping grooves are set up on connecting ring.The utility model makes connecting ring and gas head move in opposite directions by left hand of operator to grab connecting ring, while right hand holds gas head, and then makes connecting ring and gas head separate, so that scraper ring is away from limiting ring, and then gas filter element is loosened, and it is convenient for operator to detach, and simultaneously, scraper ring will scrape and clean the inner wall of gas head, avoid the problem that small space is not cleaned.

Description

Technical Field

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

[0002] A combustible gas detector is a device used to detect the presence of combustible gases in the environment. It can be used to detect leaks in gas pipelines or gas equipment. When combustible gas is detected, the detector will sound an alarm to remind the testing personnel to take maintenance measures. However, after long-term testing, the filter element inside the combustible gas detector will absorb a large amount of impurities, affecting the detection accuracy of the combustible gas detector.

[0003] In summary, this application proposes a portable testing device for combustible gas detection, which improves upon the aforementioned technical problems. Utility Model Content

[0004] To overcome the drawback that the filter element inside the combustible gas detector will adsorb a large number of impurities after long-term testing, affecting the detection accuracy of the combustible gas detector, this utility model provides a portable calibration device for combustible gas detection.

[0005] The technical solution of this utility model is as follows: a portable testing device for combustible gas detection, comprising a combustible gas detector and a flip cover; the flip cover is rotatably connected to the combustible gas detector; it also includes a connecting pipe, a connecting ring, a gas sampling head, a gas filter element, a limiting ring, an elastic telescopic rod, a slider one, a scraper ring, and a spring; the combustible gas detector is connected to the connecting pipe; the connecting pipe is connected to the connecting ring, and a slider one is fixedly connected to the connecting ring; the gas sampling head is slidably connected to the connecting ring via the slider one, and a slider two is slidably connected to the gas sampling head, and the slider two is slidably connected to the connecting ring; the connecting ring has several slots, and several locking posts are fixedly connected to the gas sampling head, each locking post being connected to a corresponding locking post. The slide rod has a notch, and a limit ring is slidably connected to the notch. The slide rod has a U-shaped groove, and an elastic telescopic rod is fixedly connected to the slide rod. Both the slide rod and the slide rod have a sliding groove. Both the slide rod and the slide rod have a slider. All sliders are slidably connected to a scraper ring. A gas filter element is installed between the limit ring and the scraper ring. The telescopic part of the elastic telescopic rod is fixedly connected to a slider, which slides within the U-shaped groove. The scraper ring has several sliding grooves, each containing a spring, and the other end of each spring is fixedly connected to a corresponding slider. The bottom of the slide rod has a sliding groove, and a slider is fixedly connected to the gas sampling head.

[0006] Furthermore, the opposite surfaces of the limiting ring and the scraping ring are both provided with rounded corners.

[0007] Furthermore, it also includes a rotating shaft and an L-shaped clamping plate; a slider on the first slide rod is fixedly connected to the rotating shaft, and the rotating shaft is rotatably connected to the first slide rod, and a torsion spring is provided at the connection between the rotating shaft and the first slide rod; an L-shaped clamping plate is slidably connected to the first slide rod.

[0008] Furthermore, it also includes springs and protrusions; each connecting ring and gas sampling head is fixedly connected to a spring, and each spring is slidably connected to the corresponding slide groove; each slide groove is fixedly connected to the center, and each protrusion is located between the corresponding spring and the corresponding slide groove.

[0009] Furthermore, the bottom of the combustible gas detector is equipped with several arc-shaped rubber rings.

[0010] Furthermore, each arc-shaped rubber ring has a chamfered edge.

[0011] This utility model has the following advantages: The operator can grasp the connecting ring with their left hand and the gas sampling head with their right hand, and then move the connecting ring and the gas sampling head away from each other, thereby separating the connecting ring and the gas sampling head. This allows the scraper ring to move away from the limiting ring, thereby loosening the gas filter element, making it easy for the operator to remove. At the same time, the scraper ring will scrape and clean the inner wall of the gas sampling head, avoiding the problem of insufficient cleaning due to limited space.

[0012] This invention uses a limiting ring to compress two spring pieces. Under the action of the protrusion, the two spring pieces are bent into an arc shape, causing the limiting ring to compress the two spring pieces and bulge them towards the gas filter element. This allows the two spring pieces to lift up the dirty gas filter element, making it easier to empty the gas filter element. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the first perspective of the portable testing device for combustible gas detection disclosed in this utility model;

[0014] Figure 2 This is a second perspective structural schematic diagram of the portable testing device for combustible gas detection disclosed in this utility model;

[0015] Figure 3 This is a schematic diagram of the connecting ring and the gas sampling head of the portable calibration device for combustible gas detection according to this utility model;

[0016] Figure 4 This is a schematic diagram of the gas filter element, limiting ring, and spring sheet disclosed in the portable testing device for combustible gas detection of this utility model.

[0017] Figure 5 This is a structural cross-sectional view of the slide bar of the portable testing device for combustible gas detection disclosed in this utility model;

[0018] Figure 6This is a structural cross-sectional view of the slider and rotating shaft of the portable testing device for combustible gas detection disclosed in this utility model.

[0019] Figure 7 This is a structural cross-sectional view of the connecting ring disclosed in the portable testing device for combustible gas detection of this utility model;

[0020] Figure 8 This is a cross-sectional view of the gas sampling head of the portable calibration device for combustible gas detection disclosed in this utility model.

[0021] Reference numerals: 1-Combustible gas detector, 2-Flip cover, 3-Connecting pipe, 4-Connecting ring, 5-Gas sampling head, 6-Gas filter element, 7-Limiting ring, 8-Elastic telescopic rod, 9-Slider one, 10-Scraper ring, 11-Spring, 12-Rotating shaft, 13-L-shaped clamping plate, 14-Spring piece, 15-Protrusion, 101-Arc-shaped rubber ring, 1011-Chamfer, 41-Slider one, 42-Card groove, 411-U-shaped groove, 100-Slider one, 51-Slider two, 52-Card post, 1001-Slider three, 511-Notch, 512-Slider four, 513-Slider two. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings.

[0023] Example

[0024] A portable testing device for combustible gas detection, referring to Figures 1-8 As shown, it includes a combustible gas detector 1 and a flip cover 2; the flip cover 2 is rotatably connected to the combustible gas detector 1.

[0025] It also includes a connecting pipe 3, a connecting ring 4, a gas sampling head 5, a gas filter element 6, a limiting ring 7, an elastic telescopic rod 8, a slider 9, a scraper ring 10, and a spring 11; the combustible gas detector 1 is connected to the connecting pipe 3; the connecting pipe 3 is connected to the connecting ring 4, and a slide rod 41 is fixedly connected to the connecting ring 4; the connecting ring 4 is slidably connected to the gas sampling head 5 through the slide rod 41, and a slide rod 51 is slidably connected to the gas sampling head 5, and the slide rod 51 is slidably connected to the connecting ring 4; the connecting ring 4 has two slots 42, and the gas sampling head 5 has two pins 52 fixedly connected, each pin 52 fitting into the corresponding slot 42; the slide rod 51 has a notch 511, and a limiting ring 7 is slidably connected to the notch 511; the slide rod 41 has a U-shaped groove 411, and the slide rod 41 has a U-shaped groove 411. A flexible telescopic rod 8 is fixedly connected; a sliding groove 100 is opened on both sliding rod 1 41 and sliding rod 2 51; a slider 9 is slidably connected on both sliding rod 1 41 and sliding rod 2 51, and all sliders 19 are slidably connected to a scraper ring 10; a gas filter element 6 is installed between the limiting ring 7 and the scraper ring 10; the telescopic part of the flexible telescopic rod 8 is fixedly connected to the slider 19, and the slider 19 slides in the U-shaped groove 411; two sliding grooves 3 1001 are opened on the scraper ring 10, and a spring 11 is fixedly connected in each sliding groove 3 1001, and the other end of each spring 11 is fixedly connected to the corresponding slider 19; a sliding groove 4 512 is opened at the bottom of sliding rod 2 51, and a slider 2 513 is fixedly connected in the gas sampling head 5, and the gas sampling head 5 slides in the sliding groove 4 512 through the slider 2 513.

[0026] The opposing surfaces of the limiting ring 7 and the scraper ring 10 are both provided with rounded corners to facilitate the insertion of the gas filter element 6 into the limiting ring 7 and the scraper ring 10.

[0027] It also includes a rotating shaft 12 and an L-shaped clamping plate 13; the slider 9 located on the slide rod 41 is fixedly connected to the rotating shaft 12, and the rotating shaft 12 is rotatably connected to the slide rod 41, and a torsion spring is provided at the connection between the rotating shaft 12 and the slide rod 41; the L-shaped clamping plate 13 is slidably connected on the slide rod 41.

[0028] It also includes a spring piece 14 and a protrusion 15; each connecting ring 4 and gas sampling head 5 is fixedly connected to a spring piece 14, and each spring piece 14 is slidably connected to the corresponding slide groove 100; each slide groove 100 is fixedly connected to the center of a protrusion 15, and each protrusion 15 is located between the corresponding spring piece 14 and the corresponding slide groove 100.

[0029] The combustible gas detector 1 has two arc-shaped rubber rings 101 at the bottom. By locking the connecting pipe 3, connecting ring 4 and gas sampling head 5 inside the arc-shaped rubber rings 101, it is easy to store and use.

[0030] Each arc-shaped rubber ring 101 has a chamfer 1011 on its edge to facilitate the insertion of the connecting pipe 3, connecting ring 4 and gas sampling head 5 into the arc-shaped rubber ring 101.

[0031] The following describes how the above embodiments work:

[0032] In use, the operator holds the combustible gas detector 1 with their right hand and flips open the cover 2 with their left hand. Then, the left hand grasps the connecting ring 4 and moves the gas sampling head 5 close to the interface, valve, and outlet of the combustible gas pipeline, or other locations prone to leakage. The operator then presses the start button on the combustible gas detector 1 with their right hand. The combustible gas detector 1 begins to absorb and collect the gas that is prone to leakage. The gas sequentially enters the gas sampling head 5, the gas filter element 6, the connecting ring 4, the connecting pipe 3, and the combustible gas detector 1. The extracted gas is detected and analyzed. The gas filter element 6 filters out dust, smoke particles, and other impurities in the air, preventing impurities from interfering with the sensor inside the combustible gas detector 1 and affecting the detection accuracy. If the combustible gas detector 1 emits a loud alarm sound, it indicates that combustible gas has been detected, meaning there is a combustible gas leak at the prone location. At this time, the operator is alerted that there is a combustible gas leak at this location and can promptly repair the leak. If the combustible gas detector 1 does not emit any alarm sound, it indicates that no combustible gas has been detected, and the operator can proceed to the next prone location for detection.

[0033] Considering that after prolonged testing, a large amount of impurities will be adsorbed inside the gas filter element 6, thus affecting its adsorption effect on impurities in the air, a new gas filter element 6 needs to be replaced to ensure the detection accuracy of the combustible gas detector 1. However, the space inside the gas sampling head 5 is small, making it difficult to disassemble and replace the gas filter element 6, which is quite troublesome and makes it difficult to clean the inside of the gas sampling head 5. Therefore, when it is necessary to replace the gas filter element 6, the operator grabs the connecting ring 4 with their left hand and the gas sampling head 5 with their right hand, and then moves the connecting ring 4 and the gas sampling head 5 in opposite directions, thereby separating the connecting ring 4 and the gas sampling head 5. The gas sampling head 5 drives the slider 2 513 to slide backward along the slide groove 4 512, as shown. Figure 3As shown in the diagram above (4-connecting ring 4 and 5-gas sampling head 5), the locking post 52 separates from the locking groove 42. At this time, the slider 9 and scraper ring 10 are no longer restricted by the gas sampling head 5. The elastic telescopic rod 8 pushes the slider 9 and scraper ring 10 to move backward along the sliding groove 100 and U-shaped groove 411 on the slider 51, so that the scraper ring 10 moves away from the limiting ring 7, thereby loosening the gas filter element 6, making it easy for the operator to remove. At the same time, the scraper ring 10 will scrape and clean the inner wall of the gas sampling head 5, avoiding the problem of insufficient cleaning due to limited space. Then, the operator takes a new gas filter element 6 and inserts it into the limiting ring 7. Then, the gas filter element 6 is squeezed into the scraper ring 10 at the other end. The operator then pulls the connecting ring 4 and the gas sampling head 5 to move them in opposite directions, so that the gas sampling head 5 moves the sliding rod 51 and the limiting ring 7 closer to the scraper ring 10 through the slider 2 513. This causes the scraper ring 10 and the limiting ring 7 to squeeze the gas filter element 6, so that both ends of the gas filter element 6 are completely inserted into the scraper ring 10 and the limiting ring 7, completing the disassembly and replacement of the gas filter element 6. Then, the left and right hands push the connecting ring 4 and the gas sampling head 5 to move towards each other and fit together, so that the locking post 52 is inserted into the locking groove 42 again, fixing the connecting ring 4 and the gas sampling head 5.

[0034] However, during replacement, the operator needs to manually touch the dirty gas filter element 6. Some combustible gases contain corrosive components, which can easily injure the operator. Therefore, after the connecting ring 4 and the gas sampling head 5 move away from each other, the operator moves the L-shaped clamp 13 forward with their left hand, so that the L-shaped clamp 13 is no longer inside the slider 9 and the rotating shaft 12. Then, the operator continues to pull the gas sampling head 5, causing the slide rod 51 and the limiting ring 7 to move backward. This causes the limiting ring 7 to squeeze the dirty gas filter element 6, pushing the scraper ring 10 to flip upward. At the same time, the operator's left and right hands respectively drive the connecting ring 4 and the gas sampling head 5 to rotate away from each other, thereby causing the slide rod 41 and the slide rod 51 to move closer to each other, thus moving the slide rod 41 and the slide rod 51. As the gas sampling head 5 is pulled further down to the bottom of the dirty gas filter element 6, the sliding rod 51 and the limiting ring 7 move backward, eventually causing the scraper ring 10 to rotate the slider 9 upward around the rotating shaft 12 by 90 degrees. The scraper ring 10 no longer restricts the dirty gas filter element 6. Then, the operator only needs to rotate the connecting ring 4 and the gas sampling head 5 by 180 degrees to discard the dirty gas filter element 6 without touching it by hand. At the same time, as the limiting ring 7 approaches the scraper ring 10, the limiting ring 7 will also squeeze the two spring pieces 14. The two spring pieces 14 are curved under the action of the protrusion 15, causing the limiting ring 7 to squeeze the two spring pieces 14 to bulge towards the gas filter element 6, thereby causing the two spring pieces 14 to lift the dirty gas filter element 6, making it easy to pour out the gas filter element 6.

[0035] It should be understood that this embodiment is for illustrative purposes only and is not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A portable testing device for detecting combustible gases, comprising a combustible gas detector (1); a flip cover (2) is rotatably connected to the combustible gas detector (1); characterized in that, A connecting pipe (3) is connected to a combustible gas detector (1); a connecting ring (4) is connected to the connecting pipe (3), and a slide rod (41) is fixedly connected to the connecting ring (4); a gas sampling head (5) is slidably connected to the connecting ring (4) through the slide rod (41), and a slide rod (51) is slidably connected to the gas sampling head (5), and the slide rod (51) is slidably connected to the connecting ring (4); several slots (42) are provided on the connecting ring (4), and several pins (52) are fixedly connected to the gas sampling head (5), each pin (52) is fitted into the corresponding slot (42); a notch (511) is provided on the slide rod (511), and a limit ring (7) is slidably connected to the notch (511); a U-shaped groove (411) is provided on the slide rod (41), and an elastic telescopic rod (8) is fixedly connected to the slide rod (41); A sliding groove 1 (100) is provided on both slide rod 1 (41) and slide rod 2 (51); a slider 1 (9) is slidably connected on both slide rod 1 (41) and slide rod 2 (51), and all sliders 1 (9) are slidably connected to a scraper ring (10); a gas filter core (6) is installed between the limiting ring (7) and the scraper ring (10); a slider 1 (9) is fixedly connected to the telescopic part of the elastic telescopic rod (8), and the slider 1 (9) slides in the U-shaped groove (411); a number of sliding grooves 3 (1001) are provided on the scraper ring (10), and a spring (11) is fixedly connected in each sliding groove 3 (1001), and the other end of each spring (11) is fixedly connected to the corresponding slider 1 (9); a sliding groove 4 (512) is provided at the bottom of slide rod 2 (51), and a slider 2 (513) is fixedly connected in the gas sampling head (5).

2. The portable testing device for combustible gas detection according to claim 1, characterized in that: The opposite surfaces of the limiting ring (7) and the scraping ring (10) are both provided with rounded corners.

3. A portable testing device for combustible gas detection according to claim 1, characterized in that: It also includes a rotating shaft (12) and an L-shaped clamping plate (13); the slider (9) located on the slide rod (41) is fixedly connected to the rotating shaft (12), and the rotating shaft (12) is rotatably connected to the slide rod (41), and a torsion spring is provided at the connection between the rotating shaft (12) and the slide rod (41); the L-shaped clamping plate (13) is slidably connected on the slide rod (41).

4. A portable testing device for combustible gas detection according to any one of claims 1-3, characterized in that: It also includes a spring (14) and a protrusion (15); each connecting ring (4) and gas sampling head (5) is fixedly connected to a spring (14), and each spring (14) is slidably connected to the corresponding slide groove (100); each slide groove (100) is fixedly connected to the center of a protrusion (15), and each protrusion (15) is located between the corresponding spring (14) and the corresponding slide groove (100).

5. A portable testing device for combustible gas detection according to claim 1, characterized in that: The combustible gas detector (1) has several arc-shaped rubber rings (101) at its bottom.

6. A portable testing device for combustible gas detection according to claim 5, characterized in that: Each arc-shaped rubber ring (101) has a chamfer (1011) on its edge.

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