CN213903394U - Trace oxygen analyzer capable of switching two sensors - Google Patents
Trace oxygen analyzer capable of switching two sensors Download PDFInfo
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- CN213903394U CN213903394U CN202022103140.5U CN202022103140U CN213903394U CN 213903394 U CN213903394 U CN 213903394U CN 202022103140 U CN202022103140 U CN 202022103140U CN 213903394 U CN213903394 U CN 213903394U
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- zirconia
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Abstract
The utility model discloses a trace oxygen analyzer capable of switching two sensors, which comprises a trace oxygen analyzer body, the micro oxygen analyzer body comprises an air inlet arranged on one side, one end of the air inlet is connected with a main pipeline, one end of the main pipeline is respectively connected with a zirconia gas circuit and a fuel cell gas circuit through a three-way joint, a zirconia trace oxygen sensor is arranged on the zirconia gas path, a fuel cell trace oxygen sensor is arranged on the fuel cell gas path, one end of the zirconia gas circuit and one end of the fuel cell gas circuit are connected with gas outlets, the utility model can be used for measuring the pressure of the fuel cell gas according to the different characteristics of two sensors, the oxygen concentration measuring instrument is switched to be used under different conditions, the advantages of the oxygen concentration measuring instrument and the oxygen concentration measuring instrument are embodied to the greatest extent, the measuring accuracy is guaranteed at a low oxygen concentration end, and quick response can be provided when the oxygen concentration is increased, so that an operator can timely respond. While at the same time maximizing the useful life of the fuel cell.
Description
Technical Field
The utility model relates to a trace oxygen analysis appearance technical field specifically is a trace oxygen analysis appearance of changeable two kinds of sensors.
Background
A trace oxygen analyzer (hereinafter referred to as an instrument) for measuring PPM level oxygen concentration is widely applied to an air separation system, and the purity of high-purity nitrogen is monitored on line. Measurement schemes using zirconia trace oxygen sensors or fuel cell sensors are commonly used. From the practical use effect, the two measurement schemes have the advantages and the disadvantages respectively.
The zirconium oxide trace oxygen sensor has the advantages that: 1. the response speed is high, and the response time is short; 2, the service life is long and can reach several years; 3. vacuum preservation is not needed; the disadvantages are as follows: measurement accuracy is susceptible to other atmospheres at <10PPM, and such atmospheres are more difficult to remove.
The micro-oxygen sensor of the fuel cell has the advantages that: the measurement is accurate and the precision is high, especially when the measurement is less than 10 PPM. The atmosphere influencing the measurement is easier to remove; the disadvantages are as follows: 1. the response speed is low, and the response time is long; 2. the higher the oxygen content, the shorter the lifetime; 3. vacuum storage is required.
It can be seen that the characteristics of the two sensors have some complementarity. When the existing trace oxygen analyzer is used, only a single sensor analyzer can be used, so that certain use limitation is caused, and the trace oxygen analysis effect is poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a trace oxygen analysis appearance of changeable two kinds of sensors to solve current trace oxygen analysis appearance, when using, can only use single sensor analysis appearance, thereby lead to certain use limitation, make the relatively poor problem of trace oxygen analysis effect.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a trace oxygen analysis appearance of changeable two kinds of sensors, includes the trace oxygen analysis appearance body, the trace oxygen analysis appearance body includes the air inlet that one side was provided with, air inlet one end is connected with total pipeline, total pipeline one end is connected with zirconia gas circuit and fuel cell gas circuit respectively through three way connection, the last zirconia trace oxygen sensor of installing of zirconia gas circuit, install the micro oxygen sensor of fuel cell on the fuel cell gas circuit, zirconia gas circuit and fuel cell gas circuit one end are connected with the gas outlet.
Furthermore, a flowmeter is installed on the main pipeline, and the flowmeter adopts an electromagnetic flowmeter.
Furthermore, a first electromagnetic valve is installed on the zirconia gas circuit.
Furthermore, a second electromagnetic valve is installed at the fuel cell gas circuit end of the fuel cell micro-oxygen sensor for gas intake.
Furthermore, a third electromagnetic valve is installed at the gas path end of the fuel cell, which is discharged by the micro-oxygen sensor of the fuel cell.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses according to the different characteristics of two kinds of sensors, switch the use under the different situation, the at utmost embodies both advantages, both guaranteed to measure the accuracy at low oxygen concentration end, can provide faster response when oxygen concentration risees again, make operating personnel in time deal with. While at the same time maximizing the useful life of the fuel cell.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of the overall structure of the present invention.
In the figure: 1. an air inlet; 2. a flow meter; 3. a zirconium oxide trace oxygen sensor; 4. A fuel cell micro-oxygen sensor; 5. an air outlet; 6. a first solenoid valve; 7. a second solenoid valve; 8. a third electromagnetic valve; 9. a trace oxygen analyzer body; 10. a main pipeline; 11. a zirconia gas circuit; 12. a fuel cell gas circuit.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, in an embodiment of the present invention, a micro oxygen analyzer capable of switching two types of sensors includes a micro oxygen analyzer body 9, the micro oxygen analyzer body 9 includes an air inlet 1 disposed at one side for facilitating the input of a detection gas, one end of the air inlet 1 is connected to a main pipeline 10, one end of the main pipeline 10 is connected to a zirconia gas circuit 11 and a fuel cell gas circuit 12 through a tee joint, the zirconia gas circuit 11 is provided with a zirconia micro oxygen sensor 3, the zirconia micro oxygen sensor 3 is disposed in the zirconia micro oxygen analyzer, the fuel cell gas circuit 12 is provided with a fuel cell micro oxygen sensor 4, the fuel cell micro oxygen sensor 4 is disposed in the fuel cell micro oxygen analyzer, one end of the zirconia gas circuit 11 and the fuel cell gas circuit 12 is connected to an air outlet 5, the main pipeline 10 is provided with a flow meter 2, be convenient for measure and handle, and flowmeter 2 adopts the electromagnetic flowmeter, install first solenoid valve 6 on the zirconia gas circuit 11, second solenoid valve 7 is installed to fuel cell gas circuit 12 end that fuel cell micro oxygen sensor 4 admitted air, third solenoid valve 8 is installed to fuel cell gas circuit 12 end that fuel cell micro oxygen sensor 4 given vent to anger, when zirconia micro oxygen sensor 3 monitored gaseous oxygen concentration and is less than 10PPM, zirconia gas circuit 11 is closed to first solenoid valve 6, open fuel cell gas circuit 12, the instrument sampling fuel cell sensor's as oxygen concentration signal after delaying several seconds. On the contrary, when the micro oxygen sensor 4 of the fuel cell monitors that the oxygen concentration of the gas is higher than 10PPM, the second electromagnetic valve 7 and the third electromagnetic valve 8 close the gas path 12 of the fuel cell, open the gas path 11 of the zirconia, and delay for several seconds, then the instrument samples the signal of the micro oxygen sensor of the zirconia as the oxygen concentration signal. Therefore, the switching use under different conditions is realized, and the advantages of the two are embodied to the greatest extent.
The utility model discloses a theory of operation and use flow: the zirconium oxide micro oxygen sensor 3 and the fuel cell micro oxygen sensor 4 are arranged in a case and are connected into a PLC control circuit, 10PPM is used as a switching point, and the two sensors are switched and used through the control of an electromagnetic valve according to different oxygen concentrations. When the zirconia trace oxygen sensor 3 monitors that the oxygen concentration of the gas is lower than 10PPM, the first electromagnetic valve 6 closes the zirconia gas circuit 11, opens the fuel cell gas circuit 12, and the instrument samples the oxygen concentration signal of the fuel cell sensor after delaying for several seconds. On the contrary, when the micro oxygen sensor 4 of the fuel cell monitors that the oxygen concentration of the gas is higher than 10PPM, the second electromagnetic valve 7 and the third electromagnetic valve 8 close the gas path 12 of the fuel cell, open the gas path 11 of the zirconia, and delay for several seconds, then the instrument samples the signal of the micro oxygen sensor of the zirconia as the oxygen concentration signal. Therefore, the switching use under different conditions is realized, the advantages of the two are embodied to the maximum extent, the measurement accuracy is ensured at the low oxygen concentration end, and a quicker response is provided when the oxygen concentration is increased, so that an operator can timely respond. While at the same time maximizing the useful life of the fuel cell.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a trace oxygen analysis appearance of two kinds of changeable sensors, includes trace oxygen analysis appearance body (9), its characterized in that: trace oxygen analysis appearance body (9) include air inlet (1) that one side was provided with, air inlet (1) one end is connected with total pipeline (10), total pipeline (10) one end is connected with zirconia gas circuit (11) and fuel cell gas circuit (12) respectively through three way connection, install zirconia trace oxygen sensor (3) on zirconia gas circuit (11), install fuel cell trace oxygen sensor (4) on fuel cell gas circuit (12), zirconia gas circuit (11) and fuel cell gas circuit (12) one end are connected with gas outlet (5).
2. The trace oxygen analyzer capable of switching between two sensors according to claim 1, wherein: the main pipeline (10) is provided with a flowmeter (2), and the flowmeter (2) adopts an electromagnetic flowmeter.
3. The trace oxygen analyzer capable of switching between two sensors according to claim 1, wherein: and a first electromagnetic valve (6) is arranged on the zirconia gas circuit (11).
4. The trace oxygen analyzer capable of switching between two sensors according to claim 1, wherein: and a second electromagnetic valve (7) is installed at the end of a fuel cell gas path (12) for gas intake of the fuel cell micro-oxygen sensor (4).
5. The trace oxygen analyzer capable of switching between two sensors according to claim 1, wherein: and a third electromagnetic valve (8) is arranged at the end of a fuel cell gas path (12) which is exhausted by the fuel cell micro-oxygen sensor (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022103140.5U CN213903394U (en) | 2020-09-23 | 2020-09-23 | Trace oxygen analyzer capable of switching two sensors |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022103140.5U CN213903394U (en) | 2020-09-23 | 2020-09-23 | Trace oxygen analyzer capable of switching two sensors |
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| CN213903394U true CN213903394U (en) | 2021-08-06 |
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| CN202022103140.5U Active CN213903394U (en) | 2020-09-23 | 2020-09-23 | Trace oxygen analyzer capable of switching two sensors |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114113270A (en) * | 2021-12-01 | 2022-03-01 | 广州市华粤行医疗科技有限公司 | Trace oxygen detector and detection method thereof |
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- 2020-09-23 CN CN202022103140.5U patent/CN213903394U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114113270A (en) * | 2021-12-01 | 2022-03-01 | 广州市华粤行医疗科技有限公司 | Trace oxygen detector and detection method thereof |
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