Gas analyzer calibration device

Abstract

The gas analyzer calibration device comprises a shell, a plurality of storage bins are formed in the upper surface of the shell, a sealing cover is arranged at the position of an opening in the upper end of the shell, and gas inlets are formed in the positions, located at the extending positions of the storage bins, of the outer wall of the shell. Air outlets extending to the outer wall of the shell are formed in the inner walls, away from the air inlet, of the multiple storage bins correspondingly, movable grooves of rectangular structures are formed in the positions, located at the air outlets, in the shell correspondingly, and sealing blocks acting on the air outlets are slidably mounted in the movable grooves; by means of the unique structural design, the pipeline of the calibration device and the pipeline connector of the gas analyzer only need to be connected once, calibration of all gas to be detected can be completed, different pipelines do not need to be disassembled and assembled repeatedly, the working efficiency is higher, and the calibration device is convenient to operate. And the pipeline interface of the gas analyzer is prevented from being damaged due to repeated disassembly and assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of gas analyzer calibration, in particular to a gas analyzer calibration device. Background Art

[0002] Gas analyzers are usually calibrated before use. During calibration, select the corresponding calibration gas according to the type of gas to be detected, and pass the calibration gas in the calibration device into the analyzer until the analyzer is stable and displays the concentration of the calibration gas. Compare the concentration displayed by the analyzer with the concentration of the calibration gas (the concentration of the calibration gas is known). If there is a deviation, it means that the instrument is inaccurate and needs to be adjusted. The analyzer can be adjusted according to the analyzer manual until the display value of the analyzer matches the concentration of the calibration gas, and the calibration is completed.

[0003] Existing analyzers can analyze and detect a variety of gases. Therefore, during calibration, the standard gas corresponding to each gas to be detected needs to be introduced into the analyzer in sequence to complete the calibration work. During calibration, the output pipeline of the calibration device needs to be docked with the pipeline interface of the analyzer. When the next standard gas is replaced for calibration, the pipeline that has been docked last time needs to be removed, which will cause repeated disassembly and assembly between the output pipeline of the calibration device and the pipeline interface of the analyzer, which not only affects the work efficiency, but also makes the pipeline interface of the analyzer prone to damage. To this end, a gas analyzer calibration device is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a gas analyzer calibration device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas analyzer calibration device, comprising a shell, a plurality of storage bins are provided on the upper surface of the shell, a sealing cover is provided at the opening position of the upper end of the shell, air inlets are provided on the outer wall of the shell at the extended positions of the plurality of storage bins, air outlets extending to the outer wall of the shell are provided on the inner walls of the plurality of storage bins away from the air inlets, movable grooves of rectangular structures are provided in the shell at the positions of the plurality of air outlets, a sealing block acting on the air outlet is slidably installed in the movable groove, an adjusting mechanism acting on the sealing block is provided on the shell, branch pipes are fixedly connected at the positions of the plurality of air outlets on the outer wall of the shell, the other ends of the plurality of branch pipes are connected to a collecting pipe, the side wall of the collecting pipe is connected to an output pipe, the side wall of the output pipe is connected to an exhaust pipe, and an air pump is provided on the exhaust pipe.

[0006] As a further preferred embodiment of the present technical solution, the air inlet is connected to the storage bin.

[0007] As a further preferred embodiment of the present technical solution, the branch pipe is in a communicating state with the air outlet.

[0008] As a further preferred embodiment of the present technical solution, the adjusting mechanism includes an adjusting member and a lead screw, the lead screw passes through the sealing block and is connected to the sealing block by threaded cooperation, the two ends of the lead screw are respectively rotatably connected to the upper and lower inner walls of the movable groove, and the upper end of the lead screw extends to the upper surface of the shell and is fixedly connected to the adjusting member.

[0009] As a further preferred embodiment of the present technical solution, the lead screw is made of cemented carbide.

[0010] As a further preferred embodiment of the present technical solution, a placement plate is fixedly connected to the outer wall of the shell below the collecting pipe.

[0011] As a further preferred embodiment of the present technical solution, a valve is provided on the side wall of the exhaust pipe.

[0012] The utility model provides a gas analyzer calibration device, which has the following beneficial effects:

[0013] The utility model has a unique structural design, so that the pipeline of the calibration device and the pipeline interface of the gas analyzer only need to be connected once to complete the calibration of all gases to be detected, without the need to repeatedly disassemble and assemble different pipelines, which has higher work efficiency and avoids damage to the pipeline interface of the gas analyzer caused by repeated disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the housing in the utility model;

[0016] Figure 3 For the utility model Figure 2 A structural diagram from another perspective;

[0017] Figure 4 For this utility model Figure 1 The structural diagram of A in the figure;

[0018] Figure 5 For this utility model Figure 3 Schematic diagram of the structure of B;

[0019] In the figure: 1. Shell; 2. Sealing cover; 3. Storage compartment; 4. Branch pipe; 5. Collecting pipe; 6. Placement plate; 7. Output pipe; 8. Adjustment part; 9. Air inlet; 10. Air outlet; 11. Air pump; 12. Exhaust pipe; 13. Valve; 14. Sealing block; 15. Screw; 16. Movable groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] The utility model provides a technical solution: Figures 1 to 5 As shown, in this embodiment, a gas analyzer calibration device includes a shell 1, a plurality of storage bins 3 are provided on the upper surface of the shell 1, a sealing cover 2 is provided at the upper opening of the shell 1, an air inlet 9 is provided on the outer wall of the shell 1 at the extension position of the plurality of storage bins 3, the air inlet 9 is in a connected state with the storage bins 3, an air outlet 10 extending to the outer wall of the shell 1 is provided on the inner wall of the plurality of storage bins 3 away from the air inlet 9, and a rectangular structure is provided in the shell 1 at the position of the plurality of air outlets 10 A movable groove 16 is provided in which a sealing block 14 acting on the air outlet 10 is slidably installed. The shell 1 is provided with an adjusting mechanism acting on the sealing block 14. Branch pipes 4 are fixedly connected to the positions of multiple air outlets 10 on the outer wall of the shell 1. The branch pipes 4 are connected with the air outlet 10. The other ends of the multiple branch pipes 4 are connected with a collecting pipe 5. The side wall of the collecting pipe 5 is connected with an output pipe 7. The side wall of the output pipe 7 is connected with an exhaust pipe 12. The exhaust pipe 12 is provided with an air pump 11.

[0022] Multiple storage bins 3 respectively store standard gases corresponding to the gases to be detected. When it is necessary to calibrate a certain gas to be detected, find the storage bin 3 of the standard gas corresponding to the gas to be detected, and control the sealing block 14 to move in the movable groove 16 through the adjustment mechanism to open the gas outlet 10 of the storage bin 3, and at the same time close the gas outlets 10 of the remaining storage bins 3. At this time, the standard gas in the storage bin 3 will enter the gas analyzer along the branch pipe 4, the collecting pipe 5 and the output pipe 7 in sequence, so as to calibrate the gas to be detected corresponding to the standard gas. After the calibration is completed, close all the gas outlets 10 and turn on the air pump 11. The air pump 11 will discharge all the gases in the pipeline through the exhaust pipe 12 to prevent the residual gas in the pipeline from affecting the calibration of the next gas to be detected. After the gas in the pipeline is discharged, replace the next standard gas and repeat the above operation until all standard gases are detected, and the calibration of all gases to be detected can be completed at one time.

[0023] Among them, the adjustment mechanism includes an adjustment member 8 and a screw 15. The screw 15 passes through the sealing block 14 and is connected to the sealing block 14 through threaded cooperation. The screw 15 is made of cemented carbide. The two ends of the screw 15 are rotatably connected to the upper and lower inner walls of the movable groove 16 respectively. The upper end of the screw 15 extends to the upper surface of the shell 1 and is fixedly connected to the adjustment member 8.

[0024] During use, the adjusting member 8 is rotated to drive the lead screw 15 to rotate. Since the movable groove 16 is a rectangular structure, the sealing block 14 slidingly fitted with the movable groove 16 cannot rotate. When the lead screw 15 rotates, the sealing block 14 will move up and down along the movable groove 16.

[0025] A placement plate 6 is fixedly connected to the outer wall of the shell 1 below the collecting pipe 5 .

[0026] The placement plate 6 can provide support for the branch pipe 4 , the collecting pipe 5 and the air pump 11 .

[0027] A valve 13 is provided on the side wall of the exhaust pipe 12 .

[0028] Closing the valve 13 during testing can prevent the standard gas from entering the exhaust pipe 12.

[0029] The utility model provides a gas analyzer calibration device, the specific working principle is as follows:

[0030] The plurality of storage bins 3 respectively store standard gases corresponding to the gases to be detected. When a certain gas to be detected needs to be calibrated, the storage bin 3 of the standard gas corresponding to the gas to be detected is found, and the sealing block 14 is controlled by the adjustment mechanism to move in the movable groove 16 so that the gas outlet 10 of the storage bin 3 is opened, and the gas outlets 10 of the remaining storage bins 3 are closed. At this time, the standard gas in the storage bin 3 will enter the gas analyzer along the branch pipe 4, the manifold 5 and the output pipe 7 in sequence, so as to calibrate the gas to be detected corresponding to the standard gas. After the calibration is completed, all the gas outlets 10 are closed. Turn on the air pump 11, and the air pump 11 will discharge the gas in all the pipelines through the exhaust pipe 12 to prevent the residual gas in the pipeline from affecting the calibration of the next gas to be detected. After the gas in the pipeline is discharged, replace the next standard gas and repeat the above operation until all standard gases are tested. The calibration of all gases to be detected can be completed. In this detection method, the pipeline of the calibration device and the pipeline interface of the gas analyzer only need to be connected once to complete the calibration of all gases to be detected. There is no need to repeatedly disassemble and assemble different pipelines, which has higher work efficiency and avoids damage to the pipeline interface of the gas analyzer caused by repeated disassembly and assembly.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas analyzer calibration device, comprising a housing (1), characterized in that: The upper surface of the shell (1) is provided with a plurality of storage bins (3); a sealing cover (2) is provided at the upper opening of the shell (1); air inlets (9) are provided on the outer wall of the shell (1) at the extended positions of the plurality of storage bins (3); air outlets (10) extending to the outer wall of the shell (1) are provided on the inner walls of the plurality of storage bins (3) away from the air inlets (9); and movable grooves (16) of rectangular structure are provided in the shell (1) at the positions of the plurality of air outlets (10); the movable grooves (16) are A sealing block (14) acting on the air outlet (10) is installed in the inner sliding manner, and an adjusting mechanism acting on the sealing block (14) is arranged on the shell (1). Branch pipes (4) are fixedly connected to the positions of the multiple air outlets (10) on the outer wall of the shell (1), and the other ends of the multiple branch pipes (4) are connected to a collecting pipe (5), and the side wall of the collecting pipe (5) is connected to an output pipe (7), and the side wall of the output pipe (7) is connected to an exhaust pipe (12), and an air pump (11) is arranged on the exhaust pipe (12).

2. A gas analyzer calibration device according to claim 1, characterized in that: The air inlet (9) is in a communicating state with the storage bin (3).

3. A gas analyzer calibration device according to claim 1, characterized in that: The branch pipe (4) is in a communicating state with the gas outlet (10).

4. A gas analyzer calibration device according to claim 1, characterized in that: The adjustment mechanism comprises an adjustment member (8) and a lead screw (15); the lead screw (15) passes through the sealing block (14) and is connected to the sealing block (14) by threaded engagement; two ends of the lead screw (15) are rotatably connected to upper and lower inner walls of the movable groove (16) respectively; the upper end of the lead screw (15) extends to the upper surface of the housing (1) and is fixedly connected to the adjustment member (8).

5. A gas analyzer calibration device according to claim 4, characterized in that: The lead screw (15) is made of hard alloy.

6. A gas analyzer calibration device according to claim 1, characterized in that: A placement plate (6) is fixedly connected to the outer wall of the shell (1) below the collecting pipe (5).

7. A gas analyzer calibration device according to claim 1, characterized in that: A valve (13) is provided on the side wall of the exhaust pipe (12).

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