Automatic protection device of gas analyzer

Abstract

The utility model relates to the technical field of polycrystalline silicon, in particular to an automatic protection device of a gas analyzer. The device comprises an analyzer (1), a transmissible pressure gauge (2), an electromagnetic valve I (3), an electromagnetic valve IV (6), a sample gas inlet (10) and an exhaust port (11), the electromagnetic valve I (3) is arranged on a pipeline of a sample gas inlet (10) of the analyzer (1), and the teletransmission pressure gauge (2) is arranged on a pipeline between the sample gas inlet (10) and the electromagnetic valve I (3); and an electromagnetic valve IV (6) is arranged on a pipeline of an exhaust port (11) of the analyzer (1). The device has the advantages of being simple in structure and easy and convenient to operate. Sensitivity is high and control is fast. The analyzer is effectively protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to polycrystal silicon technical field, specifically related to a gas analysis appearance automatic protection device. BACKGROUND

[0002] There is an analyzer instrument for measuring the content of pipeline gas medium in the process control system of chemical enterprise, which roughly includes: carbon dioxide analyzer, trace oxygen analyzer, trace hydrogen analyzer, dew point analyzer and the like. These analyzers can detect the gas component and concentration content in the pipeline or equipment in real time during the system operation process, and have a crucial role. However, various types of equipment in chemical enterprises inevitably have large and small inspection and maintenance. When the equipment where the sampling pipeline of these analyzers is located is stopped, air will backflow into the analysis equipment from the external exhaust pipeline as the pressure in the pipeline decreases to a certain critical point, resulting in a large amount of air contacting the sensor of the analyzer, thereby damaging the sensor or reducing the service life of the sensor. SUMMARY

[0003] The utility model discloses a purpose to overcome the above-mentioned prior art defects, provide a simple structure, easy operation, high sensitivity, control quick, can effectively protect the gas analysis appearance automatic protection device of analyzer.

[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0005] A kind of gas analysis appearance automatic protection device, the device includes: analyzer 1, remote pressure gauge 2, electromagnetic valve I 3, electromagnetic valve IV 6, sample gas inlet 10 and exhaust port 11;

[0006] The sample gas inlet 10 pipeline of the analyzer 1 is provided with electromagnetic valve I 3, and remote pressure gauge 2 is arranged on the pipeline between the sample gas inlet 10 and electromagnetic valve I 3;

[0007] The exhaust port 11 pipeline of analyzer 1 is provided with electromagnetic valve IV 6.

[0008] Further, the device further includes: electromagnetic valve II 4, electromagnetic valve III 5, nitrogen storage tank 7 and tee joint 13;

[0009] The other end of electromagnetic valve I 3 is connected to tee joint 13, and electromagnetic valve III 5 is arranged on the pipeline of the second end of tee joint 13;

[0010] The third end of tee joint 13 is connected to nitrogen storage tank 7 by pipeline, and electromagnetic valve II 4 is arranged on the pipeline connecting the third end of tee joint 13 and nitrogen storage tank 7.

[0011] Further, a pressure reducing valve 8 is further arranged on the pipeline connecting nitrogen storage tank 7 and tee joint 13.

[0012] Further, the nitrogen storage tank 7 is connected to the pipeline of the tee joint 13, and a flow meter 9 is arranged on the pipeline.

[0013] Further, the device further comprises a controller 12.

[0014] The controller 12 is connected with the remote pressure gauge 2, the electromagnetic valve I 3 and the electromagnetic valve IV 6 through a control signal cable 14.

[0015] Further, the device further comprises a controller 12.

[0016] The controller 12 is connected with the electromagnetic valve II 4 and the electromagnetic valve III 5 through a control signal cable 14.

[0017] The utility model provides a kind of automatic protection device of gas analyzer, analyzer outer pipeline is generally positive pressure, set a set of automatic protection device outside analyzer, including setting in the remote pressure gauge of analyzer air inlet pipe, setting one electromagnetic valve I (normally open) before analyzer air inlet rear end of remote pressure gauge, one end of electromagnetic valve I connects sample gas air inlet pipeline, the other end is connected to analyzer air inlet.Electromagnetic valve I is set tee joint, and two parallel branch pipes are divided out, branch pipe is set electromagnetic valve II (normally closed), and is led out and connected to nitrogen storage tank, pressure gauge and flow meter are set at the outlet of nitrogen storage tank, another branch pipe is set electromagnetic valve III (normally open), electromagnetic valve IV (normally open) is set on analyzer exhaust pipe, and another controller is set for controlling interlocking action.

[0018] The utility model provides a kind of automatic protection device of gas analyzer, when pressure is generally about 0.1MPa, and flow is 0.5L / min when analyzer normal operation, when system pressure suddenly drops when system is parked for maintenance or system fault trip, remote pressure gauge detects that system pressure drops to 0.05MPa below and triggers interlocking, to control electromagnetic valve III action closes air inlet, while electromagnetic valve II opens, and nitrogen pressure reducing valve outlet pressure is set as 0.1MPa, and flow is adjusted to about 0.5L / min, so that nitrogen enters analyzer sample gas air inlet, to enter sensor flow cell and protect sensor, set purging time as 10 minutes, after 10 minutes, electromagnetic valve II, electromagnetic valve IV are closed, and gas in sampling pipeline is enclosed between two valves, for long time and air insulation, the effect of protecting sensor is played.Similarly, after system is started, when pressure gauge detects that pressure is greater than 0.1MPa, triggers interlocking, to control electromagnetic valve I, electromagnetic valve IV opens, while electromagnetic valve II is closed, and automatic normal operation state is input, to ensure that gas composition in system pipeline is detected in time and accurately analyzed, to ensure that gas analysis system runs smoothly and safely.

[0019] Compared with the prior art, the automatic protection device for the gas analyzer has the advantages that

[0020] (1) Simple structure and convenient operation.

[0021] (2) High sensitivity and fast control.

[0022] (3) Effective protection of the analyzer. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic view of the automatic protection device for the gas analyzer.

[0024] In the figure: 1 is an analyzer; 2 is a remote pressure gauge; 3 is an electromagnetic valve I; 4 is an electromagnetic valve II; 5 is an electromagnetic valve III; 6 is an electromagnetic valve IV; 7 is a nitrogen storage tank; 8 is a pressure reducing valve; 9 is a flow meter; 10 is a sample gas inlet pipeline; 11 is an exhaust pipeline; 12 is a controller; 13 is a tee joint; and 14 is a control signal cable. DETAILED DESCRIPTION

[0025] In order for those skilled in the art to better understand the technical scheme of the present application, the following examples are used to further describe the present application, and the following examples are only used to illustrate the present application, but not to limit the scope of the present application.

[0026] An automatic protection device for a gas analyzer, the device comprising: an analyzer 1, a remote pressure gauge 2, an electromagnetic valve I 3, an electromagnetic valve IV 6, a sample gas inlet 10 and an exhaust port 11; the sample gas inlet 10 pipeline of the analyzer 1 is provided with the electromagnetic valve I 3, and the pipeline between the sample gas inlet 10 and the electromagnetic valve I 3 is provided with the remote pressure gauge 2; the exhaust port 11 pipeline of the analyzer 1 is provided with the electromagnetic valve IV 6.

[0027] Further, the device further comprises: an electromagnetic valve II 4, an electromagnetic valve III 5, a nitrogen storage tank 7 and a tee joint 13; the other end of the electromagnetic valve I 3 is connected to the tee joint 13, the pipeline of the second end of the tee joint 13 is provided with the electromagnetic valve III 5; the third end of the tee joint 13 is connected to the nitrogen storage tank 7 by a pipeline, and the pipeline connecting the third end of the tee joint 13 and the nitrogen storage tank 7 is provided with the electromagnetic valve II 4.

[0028] Further, the pipeline connecting the nitrogen storage tank 7 and the tee joint 13 is further provided with the pressure reducing valve 8.

[0029] Further, the pipeline connecting the nitrogen storage tank 7 and the tee joint 13 is further provided with the flow meter 9.

[0030] Further, the device also includes a controller 12; the controller 12 is connected with the remote pressure gauge 2, the electromagnetic valve I 3 and the electromagnetic valve IV 6 through the control signal cable 14 respectively.

[0031] Further, the device also includes a controller 12; the controller 12 is connected with the electromagnetic valve II 4 and the electromagnetic valve III 5 through the control signal cable 14 respectively. Embodiment

[0032] An automatic protection device for a gas analyzer, the device includes: an analyzer 1, a remote pressure gauge 2, an electromagnetic valve I 3, an electromagnetic valve IV 6, a sample gas inlet 10 and an exhaust port 11; the sample gas inlet 10 of the analyzer 1 is provided with the electromagnetic valve I 3, and the pipeline between the sample gas inlet 10 and the electromagnetic valve I 3 is provided with the remote pressure gauge 2; the pipeline of the exhaust port 11 of the analyzer 1 is provided with the electromagnetic valve IV 6.

[0033] The device also includes: an electromagnetic valve II 4, an electromagnetic valve III 5, a nitrogen storage tank 7 and a tee joint 13; the other end of the electromagnetic valve I 3 is connected with the tee joint 13, the pipeline of the second end of the tee joint 13 is provided with the electromagnetic valve III 5; the third end of the tee joint 13 is connected with the nitrogen storage tank 7 through a pipeline, and the pipeline connecting the third end of the tee joint 13 with the nitrogen storage tank 7 is provided with the electromagnetic valve II 4.

[0034] The pipeline connecting the nitrogen storage tank 7 with the tee joint 13 is also provided with a pressure reducing valve 8. The pipeline connecting the nitrogen storage tank 7 with the tee joint 13 is also provided with a flow meter 9.

[0035] The device also includes a controller 12; the controller 12 is connected with the remote pressure gauge 2, the electromagnetic valve I 3 and the electromagnetic valve IV 6 through the control signal cable 14 respectively. The device also includes a controller 12; the controller 12 is connected with the electromagnetic valve II 4 and the electromagnetic valve III 5 through the control signal cable 14 respectively. Embodiment

[0036] An automatic protection device for a gas analyzer, the device includes: an analyzer 1, a remote pressure gauge 2, an electromagnetic valve I 3, an electromagnetic valve IV 6, a sample gas inlet 10 and an exhaust port 11; the sample gas inlet 10 of the analyzer 1 is provided with the electromagnetic valve I 3, and the pipeline between the sample gas inlet 10 and the electromagnetic valve I 3 is provided with the remote pressure gauge 2; the pipeline of the exhaust port 11 of the analyzer 1 is provided with the electromagnetic valve IV 6.

[0037] The device further comprises an electromagnetic valve II 4, an electromagnetic valve III 5, a nitrogen storage tank 7 and a tee joint 13; the other end of the electromagnetic valve I 3 is connected to the tee joint 13, the electromagnetic valve III 5 is arranged on the pipeline at the second end of the tee joint 13; the third end of the tee joint 13 is connected to the nitrogen storage tank 7 by a pipeline, and the electromagnetic valve II 4 is arranged on the pipeline connecting the third end of the tee joint 13 and the nitrogen storage tank 7.

[0038] The pipeline connecting the nitrogen storage tank 7 and the tee joint 13 is further provided with a pressure reducing valve 8. The pipeline connecting the nitrogen storage tank 7 and the tee joint 13 is further provided with a flow meter 9. The device further comprises a controller 12; the controller 12 is connected to the remote pressure gauge 2, the electromagnetic valve I 3 and the electromagnetic valve IV 6 through control signal cables 14 respectively. The device further comprises a controller 12; the controller 12 is connected to the electromagnetic valve II 4 and the electromagnetic valve III 5 through control signal cables 14.

[0039] The preferred embodiments of the present application are described in detail above, but the present application is not limited to the specific details in the above-described embodiments, and various modifications can be made to the technical solutions of the present application within the technical concept of the present application, and these simple modifications all belong to the protection scope of the present application.

[0040] In addition, it should be noted that each specific technical feature and step described in the above-described specific embodiments can be combined in any appropriate manner without contradiction, and in order to avoid unnecessary repetition, the present application will not further describe various possible combination manners.

[0041] In addition, various different embodiments of the present application can also be combined in any appropriate manner, as long as they do not deviate from the technical concept of the present application, and they should also be considered as disclosed content of the present application.

Claims

1. A gas analyzer automatic protection device, characterized by, The device comprises an analyzer (1), a remote pressure gauge (2), an electromagnetic valve I (3), an electromagnetic valve IV (6), a sample gas inlet (10) and an exhaust port (11); The analyzer (1) is provided with the electromagnetic valve I (3) on the pipeline of the sample gas inlet (10), and the remote pressure gauge (2) is arranged on the pipeline between the sample gas inlet (10) and the electromagnetic valve I (3); The analyzer (1) is provided with the electromagnetic valve IV (6) on the pipeline of the exhaust port (11).

2. The automatic protection device for a gas analyzer according to claim 1, characterized in that: The device further comprises an electromagnetic valve II (4), an electromagnetic valve III (5), a nitrogen storage tank (7) and a tee joint (13); The electromagnetic valve I (3) is connected to the tee joint (13) at the other end, and the electromagnetic valve III (5) is arranged on the pipeline of the second end of the tee joint (13); The third end of the tee joint (13) is connected to the nitrogen storage tank (7) by a pipeline, and the electromagnetic valve II (4) is arranged on the pipeline connecting the third end of the tee joint (13) and the nitrogen storage tank (7).

3. A gas analyzer automatic protection device according to claim 2, characterized in that: The pipeline connecting the tee joint (13) and the nitrogen storage tank (7) is further provided with a pressure reducing valve (8).

4. The automatic protection device for a gas analyzer according to claim 2, characterized in that: The pipeline connecting the tee joint (13) and the nitrogen storage tank (7) is further provided with a flow meter (9).

5. The automatic protection device for a gas analyzer according to claim 1, characterized in that: The device further comprises a controller (12); The controller (12) is connected to the remote pressure gauge (2), the electromagnetic valve I (3) and the electromagnetic valve IV (6) through a control signal cable (14).

6. The automatic protection device for a gas analyzer according to claim 2, characterized by: The device further comprises a controller (12); The controller (12) is connected to the electromagnetic valve II (4) and the electromagnetic valve III (5) through a control signal cable (14).

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