CN215833380U - Automatic switching device for calibration gas of oxygen analyzer - Google Patents
Automatic switching device for calibration gas of oxygen analyzer Download PDFInfo
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- CN215833380U CN215833380U CN202122410407.XU CN202122410407U CN215833380U CN 215833380 U CN215833380 U CN 215833380U CN 202122410407 U CN202122410407 U CN 202122410407U CN 215833380 U CN215833380 U CN 215833380U
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Abstract
The utility model relates to the technical field of auxiliary equipment of an oxygen analyzer, in particular to an automatic calibration gas switching device of the oxygen analyzer. The automatic calibration gas switching device for the oxygen analyzer solves the problem of frequent transportation of standard gas bottles, the standard gas bottles are fixedly arranged in the calibration gas box, the standard gas is directly switched through the automatic calibration gas switching device, the problems of frequent replacement of the filtering and pressure reducing valves of the standard gas bottles and regulation of calibration flow are solved, the labor input of the oxygen analyzer calibration is reduced, and potential safety hazards caused by transportation of the standard gas bottles are reduced.
Description
Technical Field
The utility model relates to the technical field of auxiliary equipment of an oxygen analyzer, in particular to an automatic switching device for calibration gas of the oxygen analyzer.
Background
Currently, Nernst (Nernst) discovered that stabilized zirconia exhibits ionic conductivity at high temperatures since 1989. From this point on, zirconia has become the most popular solid electrolyte for research and development applications, and it has found widespread use in high temperature technology, particularly in high temperature testing technology. Compared with the existing oxygen measuring instruments (such as a magnetic oxygen analyzer, an electrochemical oxygen meter, a gas chromatograph and the like), the oxygen probe has the advantages of simple structure, short response time, wide measuring range, reliable operation, convenient installation, small maintenance amount and the like, so the oxygen probe is widely applied to the industrial departments of metallurgy, chemical industry, electric power, ceramics, automobiles, environmental protection and the like. Oxygen analyzers containing zirconia are also widely used in thermal power enterprises, and particularly, direct-insertion detection type oxygen analyzers are used. In order to improve the boiler efficiency, reduce the coal consumption and save energy, the oxygen content of the flue gas needs to be accurately monitored in real time, so that the requirement on the measurement accuracy of an oxygen analyzer is higher and higher, and the oxygen analyzer needs to be calibrated periodically. The calibration work needs maintenance personnel to carry two standard gas bottles with different oxygen concentrations to the position near the oxygen analyzer, and the calibration process also needs to frequently replace the standard gas and adjust the flow of the standard gas. The calibration work of the existing oxygen analyzer needs a plurality of persons, a standard gas bottle is frequently conveyed to the side of the oxygen analyzer needing to be calibrated, and when the standard gas is replaced, a filtering pressure reducing valve of the standard gas bottle needs to be frequently disassembled and assembled, and the flow of the standard gas is regulated to ensure the normal operation of the calibration work. The method is not only time-consuming and labor-consuming, but also has certain potential safety hazard when carrying the standard gas bottle. The disadvantages are as follows: 1. maintenance personnel are required to carry the standard gas bottle frequently, time and labor are wasted, and the risk of falling from high altitude exists in the carrying process; 2. when the oxygen analyzer is calibrated, a filtering pressure reducing valve of a standard gas bottle needs to be frequently disassembled and assembled to realize the switching of the standard gas so as to achieve the aim of calibrating the oxygen analyzer, but if the calibration is unsuccessful, the standard gas bottle is switched back, which wastes time and labor; 3. because two standard gas bottles need to be transported, the number of people required for the calibration work of the oxygen analyzer is increased, and the manpower input is increased.
In view of the above-mentioned drawbacks, the present designer has made active research and innovation to create an automatic switching device for calibration gas of an oxygen analyzer, so that the automatic switching device has industrial value.
Disclosure of Invention
In order to solve the technical problems, the utility model aims to provide an automatic calibration gas switching device for an oxygen analyzer, which solves the problem of frequent transportation of standard gas bottles.
The utility model relates to an automatic switching device for calibration gas of an oxygen analyzer, which comprises a calibration gas box, wherein the calibration gas box is connected with an automatic switching device box for calibration gas through a gas pipe, and the automatic switching device box for calibration gas is connected with a plurality of groups of local calibration joint groups through gas pipes;
two standard gas bottles are arranged in the calibration gas box, each standard gas bottle is connected with a filtering pressure reducing valve, each standard filtering pressure reducing valve is connected with an adapter through a plastic hose, the adapter is fixed on the outer side surface of the box body of the calibration gas box, and the adapter is connected with a gas pipe;
a double-control electromagnetic valve is arranged in the calibration gas automatic switching device box and is connected with two gas pipes penetrating out of the calibration gas box, the other end of the double-control electromagnetic valve is connected with a pneumatic stop valve through a gas pipe, the pneumatic stop valve is connected with a float flowmeter through a gas pipe, and the float flowmeter is connected with a gas pipe and penetrates out of the calibration gas automatic switching device box to be connected with a local calibration joint group;
the on-site calibration joint group is formed by connecting gas pipes with calibration joints through three-way valves, and each connecting end of the gas pipes and the three-way valves is provided with a manual stop valve.
Furthermore, the material of trachea is stainless steel pipe.
Further, the standard gas box is made of stainless steel 304.
Furthermore, the calibration joint connected with the front end of the three-way valve is a threaded movable joint.
Furthermore, the air pipe is fixedly connected with the air pipe through welding.
Furthermore, the calibration gas automatic switching device box is an electric control box.
Furthermore, an air switch, a terminal strip and a plurality of relays for control are arranged in the calibration gas automatic switching device box.
Furthermore, a standard gas button, a stop valve control switch, a stop valve safety indicator lamp and a power signal lamp are sequentially arranged on the box outer box body of the automatic calibration gas switching device.
Furthermore, the three-way valve is connected with two calibration joints.
Furthermore, the in-situ calibration joint group is formed by connecting at least two groups of calibration joints in parallel.
By the scheme, the utility model at least has the following advantages:
the automatic calibration gas switching device for the oxygen analyzer solves the problem of frequent transportation of standard gas bottles, the standard gas bottles are fixedly arranged in the calibration gas box, the standard gas is directly switched through the automatic calibration gas switching device, the problems of frequent replacement of the filtering and pressure reducing valves of the standard gas bottles and regulation of calibration flow are solved, the labor input of the oxygen analyzer calibration is reduced, and potential safety hazards caused by transportation of the standard gas bottles are reduced.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate a certain embodiment of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the standard gas box of FIG. 1;
FIG. 3 is a schematic view of the automatic labeled gas switching device case of FIG. 1;
FIG. 4 is a schematic view showing the internal structure of the automatic switching apparatus box for standard gas in FIG. 1;
fig. 5 is a schematic diagram of the on-site calibration joint set of fig. 1.
In the attached drawing, 1 is a calibration gas box, 2 is an air pipe, 3 is a calibration gas automatic switching device box, 4 is a local calibration joint group, 5 is a standard gas bottle, 6 is a plastic hose, 7 is a conversion joint, 8 is a double-control electromagnetic valve, 9 is a pneumatic stop valve, 10 is a float flowmeter, 11 is a filtering pressure reducing valve, 12 is a three-way valve, 13 is a calibration joint, 14 is a manual stop valve, 15 is an air switch, 16 is a terminal row, 17 is a relay, 18 is a calibration gas button, 19 is a stop valve control switch, 20 is a stop valve safety indicator lamp, and 21 is a power signal lamp.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
Referring to fig. 1 to 5, an automatic calibration gas switching device for an oxygen analyzer according to a preferred embodiment of the present invention includes a calibration gas tank 1, the calibration gas tank 1 is connected to an automatic calibration gas switching device tank 3 through a gas pipe 2, and the automatic calibration gas switching device tank 3 is connected to a plurality of local calibration connector sets 4 through gas pipes 2;
two standard gas bottles 5 are arranged in the calibration gas box 1, each standard gas bottle 5 is connected with a filtering and pressure reducing valve 11, each standard filtering and pressure reducing valve 11 is connected with an adapter 7 through a plastic hose 6, the adapter 7 is fixed on the outer side surface of the box body of the calibration gas box 1, and the adapter 7 is connected with a gas pipe 2;
a double-control electromagnetic valve 8 is arranged in the calibration gas automatic switching device box 3, the double-control electromagnetic valve 8 is connected with two gas pipes 2 penetrating out of the calibration gas box 1, the other end of the double-control electromagnetic valve 8 is connected with a pneumatic stop valve 9 through the gas pipes 2, the pneumatic stop valve 9 is connected with a float flowmeter 10 through the gas pipes 2, and the float flowmeter 10 is connected with the gas pipes 2 and penetrates out of the calibration gas automatic switching device box 3 to be connected with the in-situ calibration joint group 4;
the on-site calibration joint group 4 is formed by connecting the air pipes 2 with a calibration joint 13 through a three-way valve 12, and a manual stop valve 14 is arranged at the connecting end of each air pipe 2 and the three-way valve 12.
As shown in fig. 1, the gas pipe 2 is made of a stainless steel pipe.
As shown in FIG. 1, the standard gas box 1 is made of stainless steel 304.
Referring to fig. 1 and 5, the calibration joint 13 connected to the front end of the three-way valve 12 is a threaded union.
As shown in fig. 1, the air tube 2 is fixedly connected to the air tube 2 by welding.
Referring to fig. 3 and 4, the calibration gas automatic switching apparatus box 3 is an electrical control box.
As shown in fig. 3 and 4, an air switch 15, a terminal block 16 and a plurality of relays 17 are provided in the calibration gas automatic switching device box 3 for control.
Referring to fig. 3 and 4, the outer casing of the automatic calibration gas switching device box 3 is sequentially provided with a calibration gas button 18, a stop valve control switch 19, a stop valve safety indicator lamp 20 and a power signal lamp 21.
As shown in fig. 1 and 5, the three-way valve 12 is connected with two calibration joints 13.
Referring to fig. 1 and 5, the local calibration joint set 4 is composed of at least two sets of calibration joints 13 connected in parallel.
The working principle of the utility model is as follows:
the two standard gas bottles 5 in the calibration gas box are respectively filled with standard gas with two oxygen concentrations, the automatic calibration gas switching device box 3 is connected after the filtering and pressure reducing valve 11 is connected, the automatic calibration gas switching device box 3 is operated and controlled through a standard gas button 18, a stop valve control switch 19, a stop valve safety indicator lamp 20 and a power signal lamp 21 on the outer box body of the automatic calibration gas switching device box 3, the problem of frequent transportation of the standard gas bottles is solved, the standard gas bottles are fixedly arranged in the calibration gas box, the standard gas switching is directly carried out through the automatic calibration gas switching device, the problems of frequent replacement of the standard gas bottles, filtering and pressure reducing valves and adjustment of calibration flow are also solved, the labor input of a calibration oxygen analyzer is reduced, and potential safety hazards caused by transportation of the standard gas bottles are reduced.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the utility model, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the utility model can be combined with each other without conflict;
and finally: the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. An automatic calibration gas switching device of an oxygen analyzer is characterized by comprising a calibration gas box (1), wherein the calibration gas box (1) is connected with an automatic calibration gas switching device box (3) through a gas pipe (2), and the automatic calibration gas switching device box (3) is connected with a plurality of groups of local calibration joint groups (4) through the gas pipe (2);
two standard gas bottles (5) are arranged in the calibration gas box (1), each standard gas bottle (5) is connected with a filtering and reducing valve (11), each filtering and reducing valve (11) is connected with an adapter (7) through a plastic hose (6), the adapter (7) is fixed on the outer side surface of the box body of the calibration gas box (1), and the adapter (7) is connected with a gas pipe (2);
a double-control electromagnetic valve (8) is arranged in the calibration gas automatic switching device box (3), the double-control electromagnetic valve (8) is connected with two gas pipes (2) penetrating out of the calibration gas box (1), the other end of the double-control electromagnetic valve (8) is connected with a pneumatic stop valve (9) through the gas pipes (2), the pneumatic stop valve (9) is connected with a float flowmeter (10) through the gas pipes (2), and the float flowmeter (10) is connected with the gas pipes (2) and penetrates out of the calibration gas automatic switching device box (3) to be connected with the local calibration joint group (4);
the in-situ calibration joint group (4) is formed by connecting a gas pipe (2) with a calibration joint (13) through a three-way valve (12), and a manual stop valve (14) is arranged at the connecting end of each gas pipe (2) and the three-way valve (12).
2. The automatic switching device for calibration gas of an oxygen analyzer according to claim 1, wherein: the air pipe (2) is made of a stainless steel pipe.
3. The automatic switching device for calibration gas of an oxygen analyzer according to claim 1, wherein: the calibration gas box (1) is made of stainless steel 304.
4. The automatic switching device for calibration gas of an oxygen analyzer according to claim 1, wherein: the calibration joint (13) connected with the front end of the three-way valve (12) is a threaded movable joint.
5. The automatic switching device for calibration gas of an oxygen analyzer according to claim 1, wherein: the air pipe (2) is fixedly connected with the air pipe (2) through welding.
6. The automatic switching device for calibration gas of an oxygen analyzer according to claim 1, wherein: the calibration gas automatic switching device box (3) is an electric control box.
7. The automatic switching device for calibration gas of an oxygen analyzer according to claim 1, wherein: an air switch (15), a terminal strip (16) and a plurality of relays (17) for control are arranged in the calibration gas automatic switching device box (3).
8. The automatic switching device for calibration gas of an oxygen analyzer according to claim 1, wherein: and a standard gas button (18), a stop valve control switch (19), a stop valve safety indicator lamp (20) and a power signal lamp (21) are sequentially arranged on the outer box body of the automatic calibration gas switching device box (3).
9. The automatic switching device for calibration gas of an oxygen analyzer according to claim 1, wherein: the three-way valve (12) is connected with two calibration joints (13).
10. The automatic switching device for calibration gas of an oxygen analyzer according to claim 1, wherein: the in-situ calibration joint group (4) is formed by connecting at least two groups of calibration joints (13) in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122410407.XU CN215833380U (en) | 2021-09-30 | 2021-09-30 | Automatic switching device for calibration gas of oxygen analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122410407.XU CN215833380U (en) | 2021-09-30 | 2021-09-30 | Automatic switching device for calibration gas of oxygen analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215833380U true CN215833380U (en) | 2022-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122410407.XU Expired - Fee Related CN215833380U (en) | 2021-09-30 | 2021-09-30 | Automatic switching device for calibration gas of oxygen analyzer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115524415A (en) * | 2022-09-16 | 2022-12-27 | 重庆同辉科发气体有限公司 | High-purity nitrous oxide analysis pipeline system |
-
2021
- 2021-09-30 CN CN202122410407.XU patent/CN215833380U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115524415A (en) * | 2022-09-16 | 2022-12-27 | 重庆同辉科发气体有限公司 | High-purity nitrous oxide analysis pipeline system |
| CN115524415B (en) * | 2022-09-16 | 2023-05-30 | 重庆同辉科发气体有限公司 | High-purity nitrous oxide analysis pipeline system |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220215 |
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| CF01 | Termination of patent right due to non-payment of annual fee |