CN204882196U - Sample gas proportion diluter - Google Patents
Sample gas proportion diluter Download PDFInfo
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- CN204882196U CN204882196U CN201520478641.8U CN201520478641U CN204882196U CN 204882196 U CN204882196 U CN 204882196U CN 201520478641 U CN201520478641 U CN 201520478641U CN 204882196 U CN204882196 U CN 204882196U
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- sample gas
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- jet pump
- microporous pipe
- constant current
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Abstract
The utility model belongs to on line analyzer table, in particular to sample gas purify and online sampling system, specifically are a sample gas proportion diluter, including the shell, be equipped with jet pump and sample gas constant current sampling device in its characterized in that shell, jet pump nozzle one end is passed through jet pump export air chamber and is connected the sample gas flowmeter after diluting, and the constant -current regulation valve is connected to the jet pump other end, sample gas constant current sampling device includes sample gas sample import, sample gas sample flange, sample gas filter, sample gas heater, micropore pipe and vacuum air chamber in proper order, micropore pipe intercommunication jet pump nozzle department. The utility model discloses simple structure, practical reliable is compared with other proportion diluters.
Description
Technical field
The invention belongs to on-line analysis instrument, particularly the purification of sample gas and on-line period system, be specially a kind of sample gas proportional diluter.
Background technology
In-line analyzer is in operation a steady in a long-term requirement run.The key factor affecting its stable operation is the accumulation in analyser of dust content in sample gas and water and other various foreign material.Especially when the dust content in sample gas and water exceed its saturation degree with other foreign material, each and impurity is easy to accumulate on the sensor of analyser, normal, the stable operation of impact analysis instrument.Dilute if analysis sample gas is stablized ratio ground with clean air (as instrument wind).Then significantly can reduce the dirt in sample gas, water and other various foreign material, particularly ensure that it is away from the normal operation that can ensure subsequent analysis instrument during its saturation degree.
Summary of the invention
Object of the present invention is exactly that the diluent facilities of a design stable ratio is to realize above-mentioned imagination.
Main technical schemes of the present invention: sample gas proportional diluter, comprises shell, is characterized in that being provided with jetting pump and sample gas constant current sampler in shell; Described jet pump nozzle one end connects the sample air-flow gauge after dilution by jetting pump outlet air chamber, and the jetting pump other end connects constant-flow regulation valve; Described sample gas constant current sampler comprises sample gas sampling import, sample gas sampling flange, sample air filter, sample hot-air heater, microporous pipe and vacuum room successively; Described microporous pipe is communicated with jet pump nozzle place.
Usually, described microporous pipe is the critical sound velocity microporous pipe of the 0.1mm-0.3mm that quartz is made.
Oneself instrument wind of having that the present invention can utilize factory, as pure source of the gas, dilutes analytical sampling gas by a certain percentage.By constant-flow regulation valve, instrument wind is sent into jet jetting pump with constant flow, and make the side of jetting pump produce stable negative pressure, because this negative pressure makes two ends of microporous pipe have a differential pressure, and when ensureing that this differential pressure is enough large, in microporous pipe, make sample gas be greater than velocity of sound by flow velocity during microporous pipe, from making sample airshed reach stationary value, this flow is not by the influence of fluctuations of sample atmospheric pressure.The instrument wind of the flow that this flow is constant with entering jet jetting pump under the twitch of jetting pump mixes.Sampling sample gas just completes the dilution of stable ratio.
By the dilution of stable ratio, the dust content equal proportion in sample gas can be made to decline, the decline of water and other foreign material also equal proportion, ensures water and other foreign material in sample gas in undersaturated condition.Effectively can prevent that the measurement of analyser is polluted, the operation of stability analysis instrument.
The present invention is compared with other proportional diluter, and structure is simple, practical reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention sample gas proportional diluter.
In figure, 1, dilution after sample air-flow gauge; 2, jetting pump outlet air chamber; 3, jet pump nozzle; 4, shell; 5, constant-flow regulation valve; 6, sample gas sampling import; 7, sample gas sampling flange; 8, sample air filter; 9, sample hot-air heater; 10, microporous pipe; 11, vacuum room.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail.
Embodiment: sample gas proportional diluter as shown in Figure 1, comprises shell 4, principal feature is provided with jetting pump and sample gas constant current sampler in shell 4; Described jet pump nozzle 3 one end connects the sample air-flow gauge 1 after dilution by jetting pump outlet air chamber 2, and the jetting pump other end connects constant-flow regulation valve 5; Described sample gas constant current sampler comprises sample gas sampling import 6, sample gas sampling flange 7, sample air filter 8, sample hot-air heater 9, microporous pipe 10 and vacuum room 11 successively; Described microporous pipe 10 is communicated with jet pump nozzle 3 place.
Oneself instrument wind of having that embodiment can utilize factory, as pure source of the gas, dilutes analytical sampling gas by a certain percentage.Instrument wind is adjusted to constant instrument wind flow by constant-flow regulation valve and sends into jet pump nozzle, this traffic requirement is accurate, and within 0.5%, under the flow that 10L/ divides, error is not more than 50ml/ and divides.Produce a stable negative pressure thus at jet pump nozzle place, the degree of stability of its negative pressure is also greater than 0.5%.
Microporous pipe in sample gas constant current sampler is the critical sound velocity microporous pipe of the 0.1mm-0.3mm that a quartz is made.As the pressure ratio P0/P1 < 0.53 at the two ends of this microporous pipe, (P0 is that jet pump nozzle place produces a stable negative pressure, P1 is the pressure of sample gas sampling flange), the mass rate flowing through microporous pipe keeps constant, and the flow of this flow and constant flow regulation valve regulation just forms stable dilution proportion.
Sample gas sampling flange in sample gas constant current sampler, for installing fixing use.Sample air filter is filter large grain dirt, and the object of sample hot-air heater is the working temperature of raising sample gas proportional diluter, and the dust content in guarantee sample gas and water are undersaturated condition with other foreign material in sample gas, guarantee the reliable operation of sample gas proportional diluter and stablize.
Claims (2)
1. sample gas proportional diluter, comprises shell, it is characterized in that being provided with jetting pump and sample gas constant current sampler in shell; Described jet pump nozzle one end connects the sample air-flow gauge after dilution by jetting pump outlet air chamber, and the jetting pump other end connects constant-flow regulation valve; Described sample gas constant current sampler comprises sample gas sampling import, sample gas sampling flange, sample air filter, sample hot-air heater, microporous pipe and vacuum room successively; Described microporous pipe is communicated with jet pump nozzle place.
2. sample gas proportional diluter according to claim 1, is characterized in that described microporous pipe is the critical sound velocity microporous pipe of the 0.1mm-0.3mm that quartz is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520478641.8U CN204882196U (en) | 2015-07-06 | 2015-07-06 | Sample gas proportion diluter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520478641.8U CN204882196U (en) | 2015-07-06 | 2015-07-06 | Sample gas proportion diluter |
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| Publication Number | Publication Date |
|---|---|
| CN204882196U true CN204882196U (en) | 2015-12-16 |
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| CN201520478641.8U Active CN204882196U (en) | 2015-07-06 | 2015-07-06 | Sample gas proportion diluter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106290308A (en) * | 2016-08-04 | 2017-01-04 | 深圳市诺安环境安全股份有限公司 | Range-adaptive VOCs (volatile organic chemicals) online monitoring system and monitoring method |
| CN113804518A (en) * | 2021-09-28 | 2021-12-17 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | High-purity and ultra-pure gas high-fidelity sampling device and method |
-
2015
- 2015-07-06 CN CN201520478641.8U patent/CN204882196U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106290308A (en) * | 2016-08-04 | 2017-01-04 | 深圳市诺安环境安全股份有限公司 | Range-adaptive VOCs (volatile organic chemicals) online monitoring system and monitoring method |
| CN106290308B (en) * | 2016-08-04 | 2023-12-01 | 深圳市诺安智能股份有限公司 | Range self-adaptive VOCs on-line monitoring system and monitoring method |
| CN113804518A (en) * | 2021-09-28 | 2021-12-17 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | High-purity and ultra-pure gas high-fidelity sampling device and method |
| CN113804518B (en) * | 2021-09-28 | 2024-04-16 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | High-purity and ultra-purity gas high-fidelity sampling device and method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee after: China Petroleum & Chemical Corp. Patentee after: SINOPEC NANJING CHEMICAL RESEARCH INSTITUTE Co.,Ltd. Address before: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee before: China Petroleum & Chemical Corp. Patentee before: Nanhua Group Research Institute |