Detection gas pool mounting mechanism for laser holder calibration

Abstract

The utility model relates to a detection gas pool installation mechanism for laser holder calibration, which comprises a left vertical plate and a right vertical plate, a bottom plate is connected between the bottom side edges of the left vertical plate and the right vertical plate, a placing groove is connected between the inner walls of the left vertical plate and the right vertical plate, and the placing groove is used for placing a detection gas pool block. A gap is reserved between the right end of the detection gas pool block and the inner wall of the right vertical plate, the right vertical plate is in threaded connection with an abutting screw, two positioning blocks are fixedly arranged on the inner wall of the left vertical plate, the two positioning blocks are arranged above a groove opening of the containing groove, and three inflation cavities are reserved in the detection gas pool block and arranged in the transverse direction. The three inflation cavities are filled with standard gas of three concentrations respectively, sliding rods are arranged at the two opposite corners of the four corners of the right vertical plate, and the two ends of each sliding rod are fixedly connected with the inner wall of the left vertical plate and the inner wall of the right vertical plate respectively. According to the utility model, the scattering sensor can be calibrated efficiently and accurately.

Description

Technical Field

[0001] This utility model relates to the field of laser gimbal calibration technology, specifically to a detection gas cell mounting mechanism for laser gimbal calibration. Background Technology

[0002] Gas leaks at gas stations pose a safety risk, necessitating the installation of gas leak detection equipment to monitor leaks in real time. Gas leaks at gas stations create a "cloud" of light that is difficult to detect with the naked eye; this cloud can be monitored using a laser pan-tilt unit. The laser pan-tilt unit is equipped with a reciprocating laser emitter that scans the area around the gas station, and a scattering sensor is also present on the unit.

[0003] When the "cloud" reaches a certain concentration, the laser emitted by the laser emitter will be scattered when it passes through the "cloud", and thus detected by the scattering sensor. In this way, the leakage situation and leakage location of the gas station can be monitored in real time.

[0004] However, after a certain period of use, the detection accuracy of the scattering sensor will decrease, requiring calibration. Existing calibration methods are inefficient and make it difficult to perform efficient and accurate calibration of the scattering sensor. Utility Model Content

[0005] The purpose of this invention is to provide a detection gas cell mounting mechanism for laser gimbal calibration, which can perform efficient and accurate calibration of the scattering sensor.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A detection gas cell mounting mechanism for laser gimbal calibration includes a left vertical plate and a right vertical plate. A base plate connects the bottom edges of the left and right vertical plates. A placement groove connects the inner walls of the left and right vertical plates for placing a detection gas cell block. A gap is left between the right end of the detection gas cell block and the inner wall of the right vertical plate. A locking screw is threaded onto the right vertical plate. Two positioning blocks are fixedly installed on the inner wall of the left vertical plate. The two positioning blocks are located above the opening of the placement groove. The detection gas cell block contains three inflation chambers arranged laterally. The three inflation chambers are filled with standard gases of three different concentrations. The four corners of the right vertical plate... Sliding rods are provided at two opposite corners of the slide. The two ends of the sliding rods are fixed to the inner walls of the left and right vertical plates, respectively. The two sliding rods are slidably connected to a sliding frame. The placement slot and the detection gas pool block pass through the sliding frame. Drive screws are provided at the other two opposite corners of the four corners of the right vertical plate. Two drive motors are provided on the outer wall of the right vertical plate. The motor shafts of the drive motors are coaxially fixed to the drive screws. Screw nuts are fixed at two opposite corners of the sliding frame. The screw nuts are threadedly connected to the drive screws. A light-blocking plate is fixed to the edge of the opening of the sliding frame. A light-transmitting opening is provided in the middle of the light-blocking plate. A clearance slot is provided on both the left and right vertical plates for the light-blocking plate to pass through.

[0008] Specifically, fixed mounting seats are fixedly connected to both corners of the inner wall of the left vertical plate, and rolling bearings are installed in the fixed mounting seats. The end of the drive screw is installed in the rolling bearing.

[0009] Specifically, a movable mounting base is fixed to each of the two opposite corners of the sliding frame. A soft rubber sleeve is installed in the mounting cavity of the movable mounting base. The soft rubber sleeve is slidably fitted onto the slide rod. A pressure plate is provided on the front side of the movable mounting base.

[0010] Specifically, the movable mounting base is roughly rhomboid in shape. The rear wall of the movable mounting base is provided with a mounting cavity, and the bottom wall of the mounting cavity is provided with an exposed opening. The soft rubber sleeve gradually narrows from the middle section to both ends, thus forming a drum shape. Correspondingly, the inner wall of the mounting cavity gradually narrows from the middle section to both ends, and the front end of the soft rubber sleeve is partially exposed at the exposed opening.

[0011] Specifically, the movable mounting base has two elongated holes for screws to pass through. The two elongated holes are located on both sides of the mounting cavity. The length directions of the two elongated holes are collinear and perpendicular to the central axis of the slide rod. The pressure plate has a clamping hole in the middle. The outer wall of the exposed opening has an annular clamping chamfer. The edge of the clamping hole abuts against the annular clamping chamfer 3322. The pressure plate is fixed to the sliding frame by screws.

[0012] Specifically, the two slide rods and the two drive screws are arranged in a rectangular array.

[0013] Specifically, the lateral length of the light-blocking plate corresponds to the width of the five inflation chambers, the lateral length of the light-transmitting opening corresponds to the width of one inflation chamber, and the light-transmitting opening is located in the middle of the light-blocking plate.

[0014] Specifically, the bottom wall of the base plate is fixed with a mounting flange.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] The drive screw moves the sliding frame along the slide bar to a suitable position, causing the light-transmitting port to slide into the gas chamber corresponding to the desired concentration. Light-blocking plates on either side of the light-transmitting port block the other gas chambers. Then, the laser emitter swings to align with the gas chamber corresponding to the desired concentration and emits a laser beam. The laser beam is scattered within the gas chamber, and the scattered light is detected by the scattering sensor. By setting up three gas chambers with different concentrations, the sensitivity of the scattering sensor to the scattering of gases of different concentrations can be tested, allowing for the calibration of the scattering sensor.

[0017] The calibration process requires frequent switching of gas chambers with different concentrations. The drive screw in this device can quickly and accurately move the light-transmitting port to the required position, thereby enabling efficient and accurate calibration of the scattering sensor. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a frontal overall view of the mounting mechanism;

[0020] Figure 2 This is an overall rear view of the mounting mechanism;

[0021] Figure 3 A perspective view of the gas pool block for inspection;

[0022] Figure 4 A partial rear view of the mounting mechanism;

[0023] Figure 5 An exploded view of the movable mounting base and related structures;

[0024] Figure 6 This is a view of the movable mounting base.

[0025] In the picture:

[0026] 101. Clearance groove; 11. Left upright plate; 111. Positioning block; 112. Fixed mounting base; 12. Right upright plate; 121. Abutment screw; 122. Drive motor; 13. Base plate; 131. Mounting flange; 14. Placement groove; 15. Slide rod; 16. Drive screw;

[0027] 2. Inspect the air chamber block; 21. Inflation chamber;

[0028] 3. Sliding frame; 31. Lead screw nut; 32. Light blocking plate; 321. Light-transmitting opening; 33. Movable mounting base; 331. Long hole; 332. Mounting cavity; 3321. Exposed opening; 3322. Annular clamping chamfer; 333. Soft rubber sliding sleeve; 334. Pressure plate; 3341. Clamping hole. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] See Figure 1 A detection gas cell mounting mechanism for laser gimbal calibration includes a left vertical plate 11 and a right vertical plate 12, with a base plate 13 connecting the bottom edges of the left vertical plate 11 and the right vertical plate 12. A placement groove 14 is connected between the inner walls of the left vertical plate 11 and the right vertical plate 12 for placing the detection gas cell block 2.

[0031] A gap is left between the right end of the gas chamber block 2 and the inner wall of the right vertical plate 12 (see...). Figure 1 , Figure 4 At point A in the middle, the right vertical plate 12 is threaded with a stop screw 121 (see...). Figure 2 Two positioning blocks 111 are fixedly provided on the inner wall of the left upright plate 11, and the two positioning blocks 111 are located above the slot of the placement groove 14.

[0032] See Figure 3 The gas pool block 2 contains three gas filling chambers 21 arranged in a horizontal direction. The three gas filling chambers 21 are filled with standard gases of three different concentrations, such as 500ppm, 2000ppm and 4000ppm respectively.

[0033] Two opposite corners of the right upright plate 12 are provided with sliding rods 15, with the two ends of the sliding rods 15 fixed to the inner walls of the left upright plate 11 and the right upright plate 12, respectively. A sliding frame 3 is slidably connected to the two sliding rods 15, and the placement groove 14 and the detection gas pool block 2 pass through the sliding frame 3. Two other opposite corners of the right upright plate 12 are provided with drive screws 16.

[0034] Two drive motors 122 are provided on the outer wall of the right vertical plate 12, and the motor shafts of the drive motors 122 are coaxially fixed to the drive screw 16. Screw nuts 31 are fixed to opposite corners of the sliding frame 3, and the screw nuts 31 are threadedly connected to the drive screw 16. A light-blocking plate 32 is fixed to one edge of a vertical opening of the sliding frame 3, and a light-transmitting opening 321 is provided in the middle of the light-blocking plate 32. Both the left vertical plate 11 and the right vertical plate 12 have clearance grooves 101 through which the light-blocking plates 32 pass.

[0035] Specifically, fixed mounting bases 112 are fixedly connected to both corners of the inner wall of the left upright plate 11 (see...). Figure 2 A rolling bearing (not shown in the figure) is installed in the fixed mounting base 112, and the end of the drive screw 16 is mounted on the rolling bearing (not shown in the figure).

[0036] Specifically, movable mounting bases 33 are fixedly connected to both opposite corners of the sliding frame 3 (see...). Figure 1 A soft rubber sleeve 333 is installed inside the mounting cavity 332 of the movable mounting base 33 (see...). Figure 5 , Figure 6 The soft rubber sleeve 333 is slidably fitted onto the slide rod 15. A pressure plate 334 is provided on the front side of the movable mounting base 33.

[0037] Specifically, see Figures 4 to 6 The movable mounting base 33 is roughly rhomboid in shape. The rear wall of the movable mounting base 33 has a mounting cavity 332, and the bottom wall of the mounting cavity 332 has an exposure opening 3321. The soft rubber sleeve 333 gradually narrows from the middle section to both ends, thus forming a drum shape. Correspondingly, the inner wall of the mounting cavity 332 gradually narrows from the middle section to both ends, and the front end of the soft rubber sleeve 333 is partially exposed through the exposure opening 3321.

[0038] Specifically, the movable mounting base 33 has two elongated holes 331 for screws to pass through. The two elongated holes 331 are located on both sides of the mounting cavity 332, and their lengths are collinear and perpendicular to the central axis of the slide rod 15. The pressure plate 334 has a clamping hole 3341 in the middle, and the outer wall of the exposed opening 3321 has an annular clamping chamfer 3322. The edge of the clamping hole 3341 abuts against the annular clamping chamfer 3322. The pressure plate 334 is fixed to the sliding frame 3 by screws.

[0039] Specifically, the two slide rods 15 and the two drive screws 16 are arranged in a rectangular array.

[0040] Specifically, the lateral length of the light-blocking plate 32 corresponds to the width of the five inflation chambers 21, the lateral length of the light-transmitting opening 321 corresponds to the width of one inflation chamber 21, and the light-transmitting opening 321 is located in the middle of the light-blocking plate 32.

[0041] Specifically, a mounting flange 131 is fixedly connected to the bottom wall of the base plate 13.

[0042] The working principle of this utility model is as follows:

[0043] See Figure 3 The detection gas pool block 2 contains three inflation chambers 21 arranged horizontally. Each chamber is filled with a standard gas of three different concentrations, such as 500 ppm, 2000 ppm, and 4000 ppm. The detection gas pool block 2 is made of transparent material, allowing the laser to pass through the outer shell of the inflation chambers 21.

[0044] When the laser gimbal needs calibration, first move the sliding frame 3 to rest against the inner wall of the right vertical plate 12 using the drive screw 16 (reference). Figure 4 Next, the detection gas chamber block 2 is inserted into the placement slot 14. During insertion, the left end of the detection gas chamber block 2 is kept against the inner wall of the left upright plate 11 and inserted between the two positioning blocks 111 (see...). Figure 2 ), so that the gap between the right end of the detection gas pool block 2 and the inner wall of the right vertical plate 12 ( Figure 4 At point A, avoid the sliding frame 3 to allow the detection gas cell block 2 to be smoothly inserted into the placement slot 14. Then, tighten the abutment screw 121 so that the end of the abutment screw 121 remains against the right end of the detection gas cell block 2 (see reference). Figure 4 This ensures that the left end of the detection gas pool block 2 remains against the inner wall of the left vertical plate 11.

[0045] Subsequently, the drive screw 16 moves the sliding frame 3 along the slide rod 15 to a suitable position, causing the light-transmitting port 321 to slide into the gas filling chamber 21 corresponding to the desired concentration. The light-blocking plates 32 on both sides of the light-transmitting port 321 block the other gas filling chambers 21. Then, the laser emitting head swings to align with the gas filling chamber 21 corresponding to the desired concentration and emits a laser beam. The laser beam is scattered within the gas filling chamber 21 corresponding to the desired concentration, and the scattered light is sensed by the scattering sensor. By setting three gas filling chambers 21 with different concentrations, the sensing sensitivity of the scattering sensor to the scattering of different concentrations of gas can be tested, allowing for the calibration of the scattering sensor.

[0046] The calibration process requires frequent switching of the gas chamber 21 with different concentrations. The drive screw 16 of this device can quickly and accurately move the light-transmitting port 321 to the required position, thereby enabling efficient and accurate calibration of the scattering sensor.

[0047] The soft rubber sleeve 333 gradually narrows from the middle section to both ends, thus forming a drum shape. Correspondingly, the inner wall of the mounting cavity 332 gradually narrows from the middle section to both ends, so that the soft rubber sleeve 333 can be conveniently and stably installed into the mounting cavity 332, and can also be easily removed from the mounting cavity 332, making it easy to replace the soft rubber sleeve 333.

[0048] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A detection gas cell mounting mechanism for laser gimbal calibration, characterized in that: The system includes a left and a right vertical plate. A base plate connects the bottom edges of the left and right vertical plates. A placement groove connects the inner walls of the left and right vertical plates for placing the test gas cell block. A gap is left between the right end of the test gas cell block and the inner wall of the right vertical plate. A locking screw is threaded onto the right vertical plate. Two positioning blocks are fixed to the inner wall of the left vertical plate, and these two positioning blocks are located above the opening of the placement groove. The test gas cell block contains three inflation chambers arranged laterally. The three inflation chambers are filled with standard gases of three different concentrations. Sliding rods are provided at two opposite corners of the four corners of the right vertical plate. The two ends of the sliding rod are fixed to the inner walls of the left and right vertical plates, respectively. The two sliding rods are slidably connected to a sliding frame. The placement slot and the detection gas pool block pass through the sliding frame. The other two opposite corners of the four corners of the right vertical plate are equipped with drive screws. The outer wall of the right vertical plate is equipped with two drive motors. The motor shafts of the drive motors are coaxially fixed to the drive screws. The opposite corners of the sliding frame are fixed with screw nuts. The screw nuts are threadedly connected to the drive screws. The opening edge of the sliding frame is fixed with a light-blocking plate. A light-transmitting opening is opened in the middle of the light-blocking plate. The left and right vertical plates are both equipped with clearance slots for the light-blocking plate to pass through.

2. The detection gas cell mounting mechanism for laser gimbal calibration according to claim 1, characterized in that: Fixed mounting bases are fixedly connected to both corners of the inner wall of the left vertical plate. Rolling bearings are installed in the fixed mounting bases, and the end of the drive screw is installed in the rolling bearing.

3. The detection gas cell mounting mechanism for laser gimbal calibration according to claim 1, characterized in that: The sliding frame has two opposite corners fixed with movable mounting seats. The mounting cavity of the movable mounting seat is equipped with a soft rubber sleeve, which is slidably fitted onto the slide rod. The front side of the movable mounting seat is provided with a pressure plate.

4. The detection gas cell mounting mechanism for laser gimbal calibration according to claim 3, characterized in that: The movable mounting base is roughly rhomboid in shape. The rear wall of the movable mounting base has a mounting cavity, and the bottom wall of the mounting cavity has an exposed opening. The soft rubber sleeve gradually narrows from the middle section to both ends, thus forming a drum shape. Correspondingly, the inner wall of the mounting cavity gradually narrows from the middle section to both ends, and the front end of the soft rubber sleeve is partially exposed at the exposed opening.

5. The detection gas cell mounting mechanism for laser gimbal calibration according to claim 1, characterized in that: The movable mounting base has two elongated holes for screws to pass through. The two elongated holes are located on both sides of the mounting cavity. The length directions of the two elongated holes are collinear and perpendicular to the central axis of the slide rod. The pressure plate has a clamping hole in the middle. The outer wall of the exposed opening has an annular clamping chamfer. The edge of the clamping hole abuts against the annular clamping chamfer (3322). The pressure plate is fixed to the sliding frame by screws.

6. The detection gas cell mounting mechanism for laser gimbal calibration according to claim 1, characterized in that: The two slide rods and the two drive screws are arranged in a rectangular array.

7. The detection gas cell mounting mechanism for laser gimbal calibration according to claim 1, characterized in that: The lateral length of the light-blocking plate corresponds to the width of the five inflation chambers, and the lateral length of the light-transmitting opening corresponds to the width of one inflation chamber. The light-transmitting opening is located in the middle of the light-blocking plate.

8. The detection gas cell mounting mechanism for laser gimbal calibration according to claim 1, characterized in that: The bottom wall of the base plate is fixed with a mounting flange.

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