CN212188979U - Gas distribution device for calibrating detector - Google Patents
Gas distribution device for calibrating detector Download PDFInfo
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- CN212188979U CN212188979U CN202020827624.1U CN202020827624U CN212188979U CN 212188979 U CN212188979 U CN 212188979U CN 202020827624 U CN202020827624 U CN 202020827624U CN 212188979 U CN212188979 U CN 212188979U
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Abstract
The utility model discloses a distribution device for calibration of detector table, including the container subassembly, be provided with the input pipeline on the container subassembly, the input of input pipeline is connected with gaseous storage subassembly, and gaseous storage subassembly links to each other with the container subassembly after being connected with pressure control subassembly, gas filtering component, gaseous flow control subassembly, gaseous one-way transport assembly in order through the input pipeline, still is provided with on the input pipeline and sweeps the subassembly, and the output side of container subassembly is provided with the output pipeline of mist exhaust, is provided with the extraction subassembly on the output pipeline. Be provided with the volume that certain gas of control input that gas flow controller can be accurate stable on the input line in this device, sweep the subassembly and can discharge the gas in the input line at place completely, through the cooperation of extraction subassembly, can empty the residual gas in the pipeline completely to obtain reliable pure gas source fast after switching gas, help improving gas detection equipment's calibration precision.
Description
Technical Field
The utility model relates to a gaseous calibration equipment field, in particular to distribution device is used in calibration of detector table.
Background
With the development of social economy, the problem of air pollution is more and more serious, the public gradually improves the environmental awareness, and meanwhile, the requirement for obtaining air pollution data is increasingly strong. In the prior art, SO is detected in harmful gas contained in air2Nitrogen oxides (NO, NO)2)、O3And CO, and the like. The content of the gases needs to be detected by special gas detection equipment, and the readings of the gas detection equipment need to be calibrated by a standard gas source in the production process of the gas detection equipment; in actual use, the equipment needs to be calibrated by a standard gas source to check the equipment error. In the prior art, a set of gas source distribution device is usually adopted to calibrate various different gas detection devices, and in the use process, gas cannot be effectively emptied from a pipeline due to the fact that the gas detected in advance, so that the gas remains in the pipeline, reliable pure gas sources cannot be obtained after the gas is switched, and the calibration precision of the subsequent gas detection devices is influenced. In the prior art, each gas detection device is matched with a group of special gas source devices, the method well solves the problems of gas source residue and interference, but the implementation cost is high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a distribution device is used in detection instrument calibration.
The purpose of the utility model is realized through the following technical scheme:
a gas distribution device for calibrating a detector comprises a container assembly for mixing gas, wherein at least two input pipelines for conveying gas are arranged at the input side of the container assembly, the input end of each input pipeline is connected with a gas storage assembly, the gas storage assembly is connected with the container assembly after being sequentially connected with a pressure control assembly, a gas filtering assembly, a gas flow control assembly and a gas one-way conveying assembly through the input pipelines, the input pipeline is also provided with a purging assembly for discharging the gas in the input pipeline, the input end of the purging assembly is connected between the gas filtering assembly and the gas flow control assembly, and the output end of the purging assembly is connected between the gas flow control assembly and the gas one-way conveying assembly;
an output pipeline for discharging mixed gas is arranged on the output side of the container assembly, and an extraction assembly for changing the container assembly into vacuum is arranged on the output pipeline.
Further, a pressure detection assembly is further arranged on the input pipeline, and the pressure detection assembly is arranged between the gas filtering assembly and the gas flow control assembly.
Further, the gas flow control assembly includes a first solenoid valve and a gas flow controller, the first solenoid valve being disposed between the gas flow controller and the pressure detection assembly.
Furthermore, the purging assembly comprises a second electromagnetic valve and a blowing component, the input end of the second electromagnetic valve is arranged between the pressure detection assembly and the first electromagnetic valve, the output end of the second electromagnetic valve penetrates through the blowing component and then is connected with the input end of a third electromagnetic valve, and the output end of the third electromagnetic valve is connected between the gas flow controller and the gas one-way conveying assembly.
Furthermore, a fourth electromagnetic valve is arranged at the output end of the output pipeline, and a fifth electromagnetic valve is arranged between the output pipeline and the extraction assembly.
Further, the gas one-way delivery assembly is a one-way valve.
Further, the pressure detection component is a gas pressure sensor.
Further, the container assembly is a gas mixer.
The utility model has the advantages that:
1) all be provided with gas flow controller on every input line in this device, the certain gaseous volume of control input that gas flow controller can be accurate stable, be provided with the subassembly that sweeps on every input line side by side, the subassembly that sweeps can be with the gas in the input line at place completely discharge, through the cooperation of extraction subassembly again, can be with the gaseous evacuation completely of remaining in the pipeline to obtain reliable pure gas source fast after switching gas, help improving gas detection equipment's calibration precision.
2) Each input pipeline in the device is provided with a one-way valve, so that the mixed gas is effectively prevented from flowing back to the gas storage assembly from the gas mixer.
Drawings
FIG. 1 is a schematic view of a connection structure of a calibration device for a measuring instrument;
in the figure, 1-container assembly, 2-input pipeline, 3-gas storage assembly, 4-pressure control assembly, 5-gas filtering assembly, 6-gas one-way conveying assembly, 7-output pipeline, 8-extraction assembly, 9-pressure detection assembly, 10-first electromagnetic valve, 11-gas flow controller, 12-second electromagnetic valve, 13-blowing component, 14-third electromagnetic valve, 15-fourth electromagnetic valve and 16-fifth electromagnetic valve.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, the utility model provides a technical scheme:
the utility model provides a distribution device for calibration of detection instrument, including the container subassembly 1 that is used for the mist, the input side of container subassembly 1 is provided with two at least input pipeline 2 that are used for conveying gas, the input of every input pipeline 2 all is connected with gaseous storage assembly 3, gaseous storage assembly 3 is connected in order through input pipeline 2 and is pressed control assembly 4, gas filtering component 5, gaseous flow control assembly, link to each other with container subassembly 1 behind the gaseous one-way transport element 6, still be provided with the subassembly that sweeps that is arranged in discharging input pipeline 2 on the input pipeline 2, the input of sweeping the subassembly is connected between gaseous filtering component 5 and gaseous flow control assembly, the output of sweeping the subassembly is connected between gaseous flow control assembly and gaseous one-way transport element 6. An output pipeline 7 for discharging the mixed gas is arranged on the output side of the container assembly 1, and an extraction assembly 8 for vacuumizing the container assembly 1 is arranged on the output pipeline 7. The container assembly 1 is a gas mixer, which is an existing device.
Preferably, the input pipeline 2 is further provided with a pressure detection assembly 9, and the pressure detection assembly 9 is arranged between the gas filtering assembly 5 and the gas flow control assembly. The pressure detection assembly 9 is a gas pressure sensor. Set up gas pressure sensor at gas access end, the pressure of gaseous in just steerable input pipeline 2 when the convenience is gone into at gas, and wherein gas pressure sensor is prior art.
Preferably, the gas flow control assembly comprises a first solenoid valve 10 and a gas flow controller 11, the first solenoid valve 10 being arranged between the gas flow controller 11 and the pressure detection assembly 9. The first electromagnetic valve 10 can control the on-off of the gas in the input pipeline 2, the gas delivery quantity is controlled by the gas flow controller 11 under the state that the first electromagnetic valve 10 is opened, and the gas flow controller 11 controls the volume of the gas passing through per unit time, such as the ventilation quantity is 100ml/min, so that the ventilation can be accurately and stably carried out.
The purging assembly comprises a second electromagnetic valve 12 and an air blowing component 13, the input end of the second electromagnetic valve 12 is arranged between the pressure detection assembly 9 and the first electromagnetic valve 10, the output end of the second electromagnetic valve 12 penetrates through the air blowing component 13 and then is connected with the input end of a third electromagnetic valve 14, and the output end of the third electromagnetic valve 14 is connected between the gas flow controller 11 and the gas one-way conveying assembly 6. The output end of the output pipeline 7 is provided with a fourth electromagnetic valve 15, and a fifth electromagnetic valve 16 is arranged between the output pipeline 7 and the extraction assembly 8.
The calibration principle of the device is as follows: the deviceBy means of two feed lines 2, the first feed line 2 being used for feeding N2The second feed line 2 is used to feed diluted NH3. When the device is configured with a calibration gas source, the gas flow controllers 11 on the first input pipeline 2 and the second input pipeline 2 can respectively and accurately control N2And NH3The flow that gets into container subassembly 1 can accurate control to can the accurate standard gas that obtains after mixing, calibrate the air supply promptly, then provide the gas detection equipment that needs the calibration with the gas supply of calibrating and calibrate, the accuracy is high, stability is good and the distribution is even, can carry out the accuracy calibration to gas detection equipment. The continuity of the gas can also be controlled by the first solenoid valve 10, thus achieving a continuous configuration of the calibration gas source.
If said N is2And NH3After the gas distribution is finished, gas A and gas B need to be configured, and then N needs to be stored firstly2And NH3The gas storage module 3 is removed. Opening a first electromagnetic valve 10, a second electromagnetic valve 12 and a third electromagnetic valve 14 on a first input pipeline 2 and a second input pipeline 2, simultaneously opening a fourth electromagnetic valve 15 and closing a fifth electromagnetic valve 16, introducing gas A into an air blowing part 13 of the first input pipeline 2, introducing gas B into the air blowing part 13 of the second input pipeline 2, then operating the air blowing part 13, and respectively discharging the gas A and the gas B out of N of the first input pipeline 22And NH on the second feed line 23When the air blowing component 13 works, the air A and the air B respectively pass through the second electromagnetic valve 12 and the third electromagnetic valve 14, wherein the air blowing pressure on the side of the second electromagnetic valve 12 is greater than the pressure on the side of the third electromagnetic valve 14, the air is divided into two paths after passing through the second electromagnetic valve 12, one path passes through the pressure detection component 9 side, the other path passes through the first electromagnetic valve 10 side, the air passing through the first electromagnetic valve 10 side is mixed with the air passing through the third electromagnetic valve 14 and then discharged from the air one-way conveying component 6, after the air blowing is finished, all the first electromagnetic valve 10, the second electromagnetic valve 12, the third electromagnetic valve 14 and the fourth electromagnetic valve 15 are closed, the fifth electromagnetic valve 16 is opened, the extraction component 8 works, and the container component 1 and all the communicated parts are processed into vacuum, so that N can be fully removed2And NH3Then, the fifth electromagnetic valve 16 is closed, the gas storage component 3 filled with the gas A and the gas B is respectively connected to the first input pipeline 2 and the second input pipeline 2, the first electromagnetic valve 10 on the first input pipeline 2 and the second input pipeline 2 is opened, at this time, the calibration work of the gas A and the gas B can be realized, and the gas distribution and conveying work of the mixed gas A and the mixed gas B can be realized by opening the fourth electromagnetic valve 15.
Preferably, the gas one-way delivery assembly 6 is a one-way valve. The gas stored in the gas storage component 3 is a single gas, while the gas in the container component 1 is a mixed gas, and in order to prevent the mixed gas in the container component 1 from entering the gas storage component 3 through the input pipeline 2 and polluting the gas therein, the one-way valve is arranged to effectively prevent the gas in the container component 1 from flowing backwards.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (8)
1. The utility model provides a distribution device for calibration of detector table which characterized in that: comprises a container component (1) for mixing gas, at least two input pipelines (2) for conveying gas are arranged at the input side of the container component (1), the input end of each input pipeline (2) is connected with a gas storage component (3), the gas storage component (3) is connected with the container component (1) after being sequentially connected with a pressure control component (4), a gas filtering component (5), a gas flow control component and a gas one-way conveying component (6) through the input pipeline (2), the input pipeline (2) is also provided with a purging component used for discharging gas in the input pipeline (2), the input end of the purging component is connected between the gas filtering component (5) and the gas flow control component, the output end of the purging assembly is connected between the gas flow control assembly and the gas one-way conveying assembly (6);
an output pipeline (7) for discharging mixed gas is arranged on the output side of the container assembly (1), and an extraction assembly (8) for changing the container assembly (1) into vacuum is arranged on the output pipeline (7).
2. The air distribution device for calibrating the instrumentation according to claim 1, wherein: the input pipeline (2) is further provided with a pressure detection assembly (9), and the pressure detection assembly (9) is arranged between the gas filtering assembly (5) and the gas flow control assembly.
3. The air distribution device for calibrating the instrumentation according to claim 2, wherein: the gas flow control assembly comprises a first solenoid valve (10) and a gas flow controller (11), wherein the first solenoid valve (10) is arranged between the gas flow controller (11) and the pressure detection assembly (9).
4. A valve gear for calibration of a measuring instrument according to claim 3, wherein: the purging assembly comprises a second electromagnetic valve (12) and a blowing component (13), the input end of the second electromagnetic valve (12) is arranged between the pressure detection assembly (9) and the first electromagnetic valve (10), the output end of the second electromagnetic valve (12) penetrates through the blowing component (13) and then is connected with the input end of a third electromagnetic valve (14), and the output end of the third electromagnetic valve (14) is connected between the gas flow controller (11) and the gas one-way conveying assembly (6).
5. The air distribution device for calibrating the instrumentation according to claim 1, wherein: the output end of the output pipeline (7) is provided with a fourth electromagnetic valve (15), and a fifth electromagnetic valve (16) is arranged between the output pipeline (7) and the extraction assembly (8).
6. The air distribution device for calibrating the instrumentation according to claim 1, wherein: the gas one-way conveying assembly (6) is a one-way valve.
7. The air distribution device for calibrating the instrumentation according to claim 2, wherein: the pressure detection assembly (9) is a gas pressure sensor.
8. The air distribution device for calibrating the instrumentation according to claim 1, wherein: the container assembly (1) is a gas mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020827624.1U CN212188979U (en) | 2020-05-18 | 2020-05-18 | Gas distribution device for calibrating detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020827624.1U CN212188979U (en) | 2020-05-18 | 2020-05-18 | Gas distribution device for calibrating detector |
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| CN212188979U true CN212188979U (en) | 2020-12-22 |
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| CN202020827624.1U Active CN212188979U (en) | 2020-05-18 | 2020-05-18 | Gas distribution device for calibrating detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113687020A (en) * | 2021-06-30 | 2021-11-23 | 沪东中华造船(集团)有限公司 | Detection device and detection method for filling inert gas into low-temperature pipeline of LNG ship |
| CN113731202A (en) * | 2021-09-06 | 2021-12-03 | 苏州晟宇气体设备有限公司 | Full-automatic intelligent distribution equipment |
-
2020
- 2020-05-18 CN CN202020827624.1U patent/CN212188979U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113687020A (en) * | 2021-06-30 | 2021-11-23 | 沪东中华造船(集团)有限公司 | Detection device and detection method for filling inert gas into low-temperature pipeline of LNG ship |
| CN113687020B (en) * | 2021-06-30 | 2024-02-09 | 沪东中华造船(集团)有限公司 | LNG ship low-temperature pipeline inert gas filling detection device and detection method thereof |
| CN113731202A (en) * | 2021-09-06 | 2021-12-03 | 苏州晟宇气体设备有限公司 | Full-automatic intelligent distribution equipment |
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