A precision calibration device for a laser gas detector

Abstract

The utility model discloses a kind of laser gas detector precision calibration device, solved the position of container in prior art is inconvenient to adjust, and container cannot rotate according to the problem of demand.This utility model includes mounting bracket, sliding mechanism is slidably arranged on mounting bracket, mounting seat is arranged on sliding mechanism, rotating seat is rotatably arranged on mounting seat, fixed mechanism is arranged on mounting seat and is connected with rotating seat for fixing the rotation of rotating seat, and gas storage mechanism is arranged on rotating seat.The utility model is driven by sliding mechanism to slide gas storage mechanism, adjust the distance between gas storage mechanism and portable laser gas detector, in the utility model, rotating seat is rotatably installed on mounting seat, the angle between gas storage mechanism and portable laser gas detector is conveniently adjusted, so as to conveniently detect the detection precision of portable laser gas detector.

Description

Technical Field

[0001] This utility model belongs to the technical field of gas detection equipment, specifically relating to a laser gas detector accuracy calibration device. Background Technology

[0002] A portable laser gas concentration detector is a device used to measure the concentration of a specific gas in the air under non-contact conditions. During operation, a laser beam is emitted towards a reflector. The laser passes through the gas to be measured, reaches the reflector, is reflected, and then passes through the gas again before being received by a laser gas concentration telemetry instrument. The deflected light reflected from the target is then detected. When the wavelength emitted by the laser is near a specific absorption peak of the gas, temperature control and current modulation are used to control the emitted wavelength to the corresponding absorption peak. A modulation signal consisting of a superimposed sine wave and a triangular wave is then applied to modulate the laser wavelength. Lock-in amplification technology is used to detect the second harmonic signal caused by changes in the concentration of the specific gas, thus achieving the purpose of detecting the concentration of the specific gas.

[0003] Portable laser gas detectors, as gas concentration measurement devices, require testing and adjustment after prolonged use to ensure their accuracy. Currently, when testing the accuracy of portable laser gas detectors, the container holding the standard gas is typically fixed to the device. This prevents the distance between the portable laser gas detector and the container from being adjusted according to testing needs during accuracy calibration. Furthermore, the container cannot be rotated during testing, thus reducing the accuracy of the portable laser gas detector. Utility Model Content

[0004] This invention provides a laser gas detector accuracy calibration device to at least solve some of the above-mentioned technical problems.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A laser gas detector accuracy calibration device includes a mounting frame, a sliding mechanism slidably mounted on the mounting frame, a mounting base mounted on the sliding mechanism, a rotating base rotatably mounted on the mounting base, a fixing mechanism mounted on the mounting base and connected to the rotating base for fixing the rotation of the rotating base, and a gas storage mechanism mounted on the rotating base; the gas storage mechanism has a sealed gas storage cavity, and the gas storage mechanism has an inlet, an outlet and a detection hole communicating with the gas storage cavity.

[0007] Furthermore, the mounting base is provided with a rotating mounting groove, and the rotating base is rotatably mounted in the rotating mounting groove.

[0008] Furthermore, the fixing mechanism includes a threaded hole formed on the rotating seat and communicating with the rotating mounting groove, and a clamping bolt threaded into the threaded hole for abutting the rotating seat.

[0009] Furthermore, the mounting base is equipped with a display column, and the rotating base is equipped with a scale corresponding to the display column.

[0010] Furthermore, the sliding mechanism includes two sliding seats that are slidably mounted on the mounting bracket, and a fixed seat located between the two sliding seats and connected to the mounting bracket.

[0011] Furthermore, the gas storage mechanism includes a detection mounting frame on a rotating base, transparent sealing windows on both sides of the detection mounting frame, a sealing mechanism between the mounting frame and the transparent sealing windows, and a fixing ring plate on the detection mounting frame for fixing the transparent sealing windows; the mounting frame and the two transparent sealing windows enclose the gas storage cavity.

[0012] Furthermore, the sealing mechanism includes a sealing groove provided on the testing mounting bracket, and a sealing ring embedded in the sealing groove.

[0013] Furthermore, the testing mounting frame is equipped with a sealing mounting groove; a transparent sealing window is installed inside the sealing mounting groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This utility model has a simple structure, a scientific and reasonable design, and is easy to use. The sliding mechanism in this utility model can drive the gas storage mechanism to slide on the mounting frame, adjust the distance between the gas storage mechanism and the portable laser gas detector, and facilitate the detection of the accuracy of the portable laser gas detector.

[0016] In this invention, the rotating seat is rotatably mounted on the mounting base. By rotating the rotating seat, the rotating seat drives the gas storage mechanism to rotate, which facilitates the adjustment of the angle between the gas storage mechanism and the portable laser gas detector, thereby facilitating the testing accuracy of the portable laser gas detector. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a cross-sectional view of the gas storage mechanism of this utility model.

[0019] Figure 3 This is an exploded view of the gas storage mechanism of this utility model.

[0020] Figure 4 This is a schematic diagram of the mounting base of this utility model.

[0021] Figure 5 This is a schematic diagram of the rotating base of this utility model.

[0022] Figure 6 This is a schematic diagram of the testing and mounting frame of this utility model.

[0023] The names corresponding to the reference numerals in the attached figures are as follows:

[0024] 1. Mounting bracket; 2. Mounting base; 3. Rotating base; 4. Gas storage chamber; 5. Rotating mounting groove; 6. Threaded hole; 7. Clamping bolt; 8. Display column; 9. Scale; 10. Sliding base; 11. Fixed base; 12. Transparent sealing window; 13. Fixed ring plate; 14. Sealing groove; 15. Sealing ring; 16. Sealing mounting groove; 17. Air inlet; 18. Air outlet; 19. Inspection hole; 20. Inspection mounting bracket. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; of course, they can also refer to a mechanical connection or an electrical connection; furthermore, they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Example 1.

[0029] like Figure 1-6As shown, the present invention provides a laser gas detector accuracy calibration device, including a mounting frame 1, a sliding mechanism slidably mounted on the mounting frame 1, a mounting base 2 mounted on the sliding mechanism, a rotating base 3 rotatably mounted on the mounting base 2, a fixing mechanism mounted on the mounting base 2 and connected to the rotating base 3 for fixing the rotation of the rotating base 3, and a gas storage mechanism mounted on the rotating base 3; the gas storage mechanism is provided with a sealed gas storage cavity 4, and the gas storage mechanism is provided with an air inlet 17, an air outlet 18 and a detection hole 19 communicating with the gas storage cavity 4.

[0030] In this utility model, the sliding mechanism can drive the gas storage mechanism to slide on the mounting frame 1, adjusting the distance between the gas storage mechanism and the portable laser gas detector, which facilitates the detection of the accuracy of the portable laser gas detector;

[0031] In this utility model, the rotating seat 3 is rotatably mounted on the mounting base 2. When in use, by rotating the rotating seat 3, the rotating seat 3 drives the gas storage mechanism to rotate, which facilitates the adjustment of the angle between the gas storage mechanism and the portable laser gas detector. This facilitates the detection accuracy of the portable laser gas detector. At the same time, the fixing mechanism can fix the rotating seat 3 to prevent it from rotating during use.

[0032] In this invention, the air inlet 17 is connected to an external standard gas delivery device, and the detection port 19 is connected to an external gas concentration detection device. The gas concentration detection device can detect the gas concentration in the gas storage chamber 4. The detection accuracy of the gas concentration detection device is higher than that of the portable laser gas detector. In use, the standard gas delivery device delivers standard gas to the gas storage chamber 4 through the air inlet 17, while the gas concentration detection device detects the gas concentration in the gas storage chamber 4 and obtains the detection result. By comparing the result detected by the portable laser gas detector with the result detected by the gas concentration detection device, the detection error of the portable laser gas detector can be obtained, which facilitates the operator to recalibrate the accuracy of the portable laser gas detector. After the portable laser gas detector has completed the detection, the gas in the gas storage chamber 4 can be discharged through the air outlet 18.

[0033] The gas detected by this invention is carbon dioxide.

[0034] Example 2.

[0035] like Figure 1-6As shown, the present invention provides a laser gas detector accuracy calibration device, including a mounting frame 1, a sliding mechanism slidably mounted on the mounting frame 1, a mounting base 2 mounted on the sliding mechanism, a rotating base 3 rotatably mounted on the mounting base 2, a fixing mechanism mounted on the mounting base 2 and connected to the rotating base 3 for fixing the rotation of the rotating base 3, and a gas storage mechanism mounted on the rotating base 3; the gas storage mechanism is provided with a sealed gas storage cavity 4, and the gas storage mechanism is provided with an air inlet 17, an air outlet 18 and a detection hole 19 communicating with the gas storage cavity 4.

[0036] The mounting base 2 is provided with a rotating mounting groove 5, and the rotating base 3 is rotatably mounted in the rotating mounting groove 5.

[0037] In this embodiment 2, the rotating seat 3 is rotatably installed in the rotating mounting groove 5. When in use, the rotating seat 3 is manually rotated, and the rotating seat 3 drives the gas storage mechanism to rotate synchronously, thereby adjusting the angle of the gas storage mechanism.

[0038] Example 3.

[0039] like Figure 1-6 As shown, the present invention provides a laser gas detector accuracy calibration device, including a mounting frame 1, a sliding mechanism slidably mounted on the mounting frame 1, a mounting base 2 mounted on the sliding mechanism, a rotating base 3 rotatably mounted on the mounting base 2, a fixing mechanism mounted on the mounting base 2 and connected to the rotating base 3 for fixing the rotation of the rotating base 3, and a gas storage mechanism mounted on the rotating base 3; the gas storage mechanism is provided with a sealed gas storage cavity 4, and the gas storage mechanism is provided with an air inlet 17, an air outlet 18 and a detection hole 19 communicating with the gas storage cavity 4.

[0040] The mounting base 2 is provided with a rotating mounting groove 5, and the rotating base 3 is rotatably mounted in the rotating mounting groove 5.

[0041] The fixing mechanism includes a threaded hole 6 opened on the rotating seat 3 and connected to the rotating mounting groove 5, and a clamping bolt 7 threaded into the threaded hole 6 for clamping the rotating seat 3.

[0042] In this embodiment 3, after the rotating seat 3 rotates, the tightening bolt 7 is tightened so that one end of the tightening bolt 7 abuts against the side wall of the rotating seat 3, thereby fixing the rotating seat 3. Similarly, by loosening the tightening bolt 7, the tightening bolt 7 separates from the side wall of the rotating seat 3, and the rotating seat 3 can be rotated, thereby facilitating the adjustment of the angle of the rotating seat 3.

[0043] Example 4.

[0044] like Figure 1-6As shown, the present invention provides a laser gas detector accuracy calibration device, including a mounting frame 1, a sliding mechanism slidably mounted on the mounting frame 1, a mounting base 2 mounted on the sliding mechanism, a rotating base 3 rotatably mounted on the mounting base 2, a fixing mechanism mounted on the mounting base 2 and connected to the rotating base 3 for fixing the rotation of the rotating base 3, and a gas storage mechanism mounted on the rotating base 3; the gas storage mechanism is provided with a sealed gas storage cavity 4, and the gas storage mechanism is provided with an air inlet 17, an air outlet 18 and a detection hole 19 communicating with the gas storage cavity 4.

[0045] The mounting base 2 is equipped with a display column 8, and the rotating base 3 is equipped with a scale 9 corresponding to the display column 8.

[0046] In this embodiment 4, the rotation angle of the rotating seat 3 can be easily observed by the combination of the display column 8 and the scale 9.

[0047] Example 5.

[0048] like Figure 1-6 As shown, the present invention provides a laser gas detector accuracy calibration device, including a mounting frame 1, a sliding mechanism slidably mounted on the mounting frame 1, a mounting base 2 mounted on the sliding mechanism, a rotating base 3 rotatably mounted on the mounting base 2, a fixing mechanism mounted on the mounting base 2 and connected to the rotating base 3 for fixing the rotation of the rotating base 3, and a gas storage mechanism mounted on the rotating base 3; the gas storage mechanism is provided with a sealed gas storage cavity 4, and the gas storage mechanism is provided with an air inlet 17, an air outlet 18 and a detection hole 19 communicating with the gas storage cavity 4.

[0049] The sliding mechanism includes two sliding seats 10 that are slidably disposed on the mounting frame 1, and a fixed seat 11 disposed between the two sliding seats 10 and connected to the mounting seat 2.

[0050] In this embodiment 5, the sliding seat 10 can reduce the friction between the fixed seat 11 and the mounting frame 1. The fixed seat 11 is installed between the two sliding seats 10. In use, the fixed seat 11 is pushed manually to slide on the mounting frame 1. The fixed seat 11 drives the mounting seat 2 to move synchronously. The mounting seat 2 drives the rotating seat 3 to move. The rotating seat 3 drives the gas storage mechanism to move, thereby adjusting the distance between the portable laser gas detector and the gas storage mechanism.

[0051] Example 6.

[0052] like Figure 1-6As shown, the present invention provides a laser gas detector accuracy calibration device, including a mounting frame 1, a sliding mechanism slidably mounted on the mounting frame 1, a mounting base 2 mounted on the sliding mechanism, a rotating base 3 rotatably mounted on the mounting base 2, a fixing mechanism mounted on the mounting base 2 and connected to the rotating base 3 for fixing the rotation of the rotating base 3, and a gas storage mechanism mounted on the rotating base 3; the gas storage mechanism is provided with a sealed gas storage cavity 4, and the gas storage mechanism is provided with an air inlet 17, an air outlet 18 and a detection hole 19 communicating with the gas storage cavity 4.

[0053] The gas storage mechanism includes a detection mounting frame 20 on a rotating base 3, transparent sealing windows 12 on both sides of the detection mounting frame 20, a sealing mechanism between the mounting frame 1 and the transparent sealing windows 12, and a fixing ring plate 13 on the detection mounting frame 20 for fixing the transparent sealing windows 12; the mounting frame 1 and the two transparent sealing windows 12 form the gas storage cavity 4.

[0054] In this embodiment 6, the transparent sealing window 12 allows the laser emitted by the portable laser gas detector to pass through the detection mounting frame 20 and irradiate the reflector plate. The sealing mechanism can easily seal the connection between the transparent sealing window 12 and the detection mounting frame 20, thereby reducing the probability of standard gas leakage. The fixing ring plate 13 is fixed in the rotating seat 3 by bolts, thereby facilitating the fixing of the transparent sealing window 12.

[0055] Example 7.

[0056] like Figure 1-6 As shown, the present invention provides a laser gas detector accuracy calibration device, including a mounting frame 1, a sliding mechanism slidably mounted on the mounting frame 1, a mounting base 2 mounted on the sliding mechanism, a rotating base 3 rotatably mounted on the mounting base 2, a fixing mechanism mounted on the mounting base 2 and connected to the rotating base 3 for fixing the rotation of the rotating base 3, and a gas storage mechanism mounted on the rotating base 3; the gas storage mechanism is provided with a sealed gas storage cavity 4, and the gas storage mechanism is provided with an air inlet 17, an air outlet 18 and a detection hole 19 communicating with the gas storage cavity 4.

[0057] The gas storage mechanism includes a detection mounting frame 20 on a rotating base 3, transparent sealing windows 12 on both sides of the detection mounting frame 20, a sealing mechanism between the mounting frame 1 and the transparent sealing windows 12, and a fixing ring plate 13 on the detection mounting frame 20 for fixing the transparent sealing windows 12; the mounting frame 1 and the two transparent sealing windows 12 form the gas storage cavity 4.

[0058] The sealing mechanism includes a sealing groove 14 provided on the test mounting frame 20, and a sealing ring 15 embedded in the sealing groove 14.

[0059] In this embodiment 7, the sealing groove 14 is disposed in the sealing mounting groove 16, and the sealing ring 15 is embedded in the sealing groove 14. The sealing ring 15 can facilitate the sealing of the gap between the transparent sealing window 12 and the detection mounting bracket 20, thereby reducing the probability of leakage of standard gas.

[0060] Example 8.

[0061] like Figure 1-6 As shown, the present invention provides a laser gas detector accuracy calibration device, including a mounting frame 1, a sliding mechanism slidably mounted on the mounting frame 1, a mounting base 2 mounted on the sliding mechanism, a rotating base 3 rotatably mounted on the mounting base 2, a fixing mechanism mounted on the mounting base 2 and connected to the rotating base 3 for fixing the rotation of the rotating base 3, and a gas storage mechanism mounted on the rotating base 3; the gas storage mechanism is provided with a sealed gas storage cavity 4, and the gas storage mechanism is provided with an air inlet 17, an air outlet 18 and a detection hole 19 communicating with the gas storage cavity 4.

[0062] The gas storage mechanism includes a detection mounting frame 20 on a rotating base 3, transparent sealing windows 12 on both sides of the detection mounting frame 20, a sealing mechanism between the mounting frame 1 and the transparent sealing windows 12, and a fixing ring plate 13 on the detection mounting frame 20 for fixing the transparent sealing windows 12; the mounting frame 1 and the two transparent sealing windows 12 form the gas storage cavity 4.

[0063] The testing mounting frame 20 is provided with a sealing mounting groove 16; the transparent sealing window 12 is installed in the sealing mounting groove 16.

[0064] In this embodiment 8, the sealing mounting groove 16 is set in the detection mounting frame 20, and the transparent sealing window 12 is installed in the sealing mounting groove 16. The sealing mounting groove 16 can facilitate the limiting and fixing of the transparent sealing window 12.

[0065] Working principle

[0066] In use, the standard gas delivery device delivers standard gas into the gas storage chamber 4 through the inlet 17. Simultaneously, the gas concentration detection device detects the gas concentration in the gas storage chamber 4. The fixed base 11 is manually pushed to slide on the mounting frame 1, causing the mounting base 2 to move synchronously. The mounting base 2 then moves the rotating base 3, which in turn moves the gas storage mechanism, thus adjusting the distance between the portable laser gas detector and the gas storage mechanism. The rotating base 3 is then manually rotated, causing the gas storage mechanism to rotate synchronously, thus adjusting the angle of the gas storage mechanism. The portable laser gas detector is then activated, detecting the gas concentration in the gas storage chamber 4 and obtaining the result. The result is then compared with the result from the gas concentration detection device to determine the detection error of the portable laser gas detector, facilitating adjustments to its detection accuracy.

[0067] The standard gas delivery equipment, gas concentration detection equipment, and portable laser gas detector used in this invention are all existing technologies and can be purchased and used directly on the market. Therefore, the structure, principle, and circuit of the standard gas delivery equipment, gas concentration detection equipment, and portable laser gas detector will not be described in detail here.

[0068] Finally, it should be noted that the above embodiments are merely preferred embodiments of this utility model used to illustrate the technical solutions of this utility model, and are not intended to limit it, nor are they intended to limit the patent scope of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model. That is to say, any changes or refinements made to the main design concept and spirit of this utility model that are not of substantial significance, but whose technical problems are still consistent with those of this utility model, should be included within the protection scope of this utility model. In addition, the direct or indirect application of the technical solutions of this utility model to other related technical fields are similarly included within the patent protection scope of this utility model.

Claims

1. A laser gas detector accuracy calibration device, characterized in that, It includes a mounting bracket (1), a sliding mechanism slidably mounted on the mounting bracket (1), a mounting seat (2) mounted on the sliding mechanism, a rotating seat (3) rotatably mounted on the mounting seat (2), a fixing mechanism mounted on the mounting seat (2) and connected to the rotating seat (3) for fixing the rotation of the rotating seat (3), and a gas storage mechanism mounted on the rotating seat (3); the gas storage mechanism is provided with a sealed gas storage chamber (4), and the gas storage mechanism is provided with an air inlet (17), an air outlet (18) and a detection hole (19) communicating with the gas storage chamber (4).

2. The laser gas detector accuracy calibration device according to claim 1, characterized in that, The mounting base (2) is provided with a rotating mounting groove (5), and the rotating base (3) is rotatably mounted in the rotating mounting groove (5).

3. The laser gas detector accuracy calibration device according to claim 2, characterized in that, The fixing mechanism includes a threaded hole (6) opened on the rotating seat (3) and connected to the rotating mounting groove (5), and a clamping bolt (7) threaded into the threaded hole (6) for clamping the rotating seat (3).

4. The laser gas detector accuracy calibration device according to claim 1, characterized in that, The mounting base (2) is provided with a display column (8), and the rotating base (3) is provided with a scale (9) corresponding to the display column (8).

5. The laser gas detector accuracy calibration device according to claim 1, characterized in that, The sliding mechanism includes two sliding seats (10) that are slidably mounted on the mounting bracket (1), and a fixed seat (11) that is located between the two sliding seats (10) and connected to the mounting bracket (2).

6. The laser gas detector accuracy calibration device according to claim 1, characterized in that, The gas storage mechanism includes a detection mounting frame (20) on a rotating seat (3), transparent sealing windows (12) on both sides of the detection mounting frame (20), a sealing mechanism between the mounting frame (1) and the transparent sealing windows (12), and a fixing ring plate (13) on the detection mounting frame (20) for fixing the transparent sealing windows (12); the mounting frame (1) and the two transparent sealing windows (12) form the gas storage cavity (4).

7. The laser gas detector accuracy calibration device according to claim 6, characterized in that, The sealing mechanism includes a sealing groove (14) provided on the test mounting bracket (20) and a sealing ring (15) embedded in the sealing groove (14).

8. The laser gas detector accuracy calibration device according to claim 6, characterized in that, The testing mounting bracket (20) is provided with a sealing mounting groove (16); a transparent sealing window (12) is installed in the sealing mounting groove (16).

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