CN204389374U - Intelligent constant-temperature flow cell device - Google Patents
Intelligent constant-temperature flow cell device Download PDFInfo
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- CN204389374U CN204389374U CN201420865246.0U CN201420865246U CN204389374U CN 204389374 U CN204389374 U CN 204389374U CN 201420865246 U CN201420865246 U CN 201420865246U CN 204389374 U CN204389374 U CN 204389374U
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Abstract
The utility model discloses a kind of intelligent constant-temperature flow cell device, comprise sample gas flow cell, well heater, sweep gas entrance, glass vision panel, external flange, demarcate autogenous cutting and change to mouth, sample autogenous cutting changes to mouth, flow cell entrance, flow cell outlet and incubation cavity, well heater is arranged with outside described sample gas flow cell, described sample gas flow cell symmetria bilateralis is provided with glass vision panel, external flange, described sample gas flow cell is arranged with flow cell outlet, sweep gas entrance is provided with below described sample gas flow cell, be provided with demarcation autogenous cutting above described sample gas flow cell and change to mouth, sample autogenous cutting changes to mouth and flow cell entrance, described sample gas flow cell is located in incubation cavity.Disclosed in the utility model, a kind of intelligent constant-temperature flow cell device, carries out constant temperature to sample gas, carries out purging to ensure that sample gas is on dew point to form, ensures that form is not contaminated, ensure that precision of analysis and the reliability of laser analysis instrument.
Description
Technical field
The utility model relates to one and is applied in laser gas analyzer equipment, constant temperature is carried out to sample gas, purging is carried out to ensure that sample gas is on dew point to form, ensure that form is not contaminated, ensure that the precision of analysis of laser analysis instrument and the intelligent constant-temperature flow cell device of reliability, be widely used in the gas-monitoring fields such as chemical industry, electric power, metallurgy, building materials.
Background technology
In SCR denitrating flue gas process, the measurement that NH3 escapes is related to operating cost, device security and secondary pollution.Near-infrared laser NH3 analyser is mostly adopted to be directly installed on the monitoring that NH3 escape is carried out in denitration exhaust pass both sides at present.Through the practice of this rig-site utilization in several years, demonstrate direct field erected NH3 monitor because of the impact by dirt, at all cannot continuous and steady operation, cannot actual NH3 concentration in actual response flue, due to the actual amount of NH3, far super design standards and instrument cannot actual responses in some factory, generation as regular in catalyzer is poisoning, air preheater after denitration starts to occur that crystalline damage is on-the-spot, causes very large loss to power plant.
In addition, thermal power plant adopts tunable diode laser spectroscopic methodology monitor directly to insert flue and measures, what adopt is the method for single-point sampling monitoring. laser reflection part works for a long time under the high temperature with high dust of nearly 400 DEG C, cause the reflecting prism life cycle only 3-6 month of measuring sonde front portion, the price changing these parts is also very expensive; The failure rate of main T/R unit is higher simultaneously, and maintenance cost is high, maintenance cycle is long, can not meet the needs that long-term stability is run and environmental protection is verified of the escaping of ammonia analysis meter at all.SO2 in addition in flue gas and the content of water vapour is direct impact analysis instrument measurement Numerical accuracy also, makes this instrument measurement error larger; When denitration rate and spray ammonia flow reduce or increase, this instrument measurement numerical value is almost unchanged, and the escaping of ammonia value and the various parameter of detection do not have good trend to mate.
Utility model content
The purpose of this utility model is then the deficiency for above-mentioned present technology, provides a kind of intelligent constant-temperature flow cell device.
The technical scheme that the utility model adopts is:
A kind of intelligent constant-temperature flow cell device, comprise sample gas flow cell, well heater, sweep gas entrance, glass vision panel, external flange, demarcate autogenous cutting and change to mouth, sample autogenous cutting changes to mouth, flow cell entrance, flow cell outlet and incubation cavity, well heater is arranged with outside described sample gas flow cell, described sample gas flow cell symmetria bilateralis is provided with glass vision panel, external flange, described sample gas flow cell is arranged with flow cell outlet, sweep gas entrance is provided with below described sample gas flow cell, be provided with demarcation autogenous cutting above described sample gas flow cell and change to mouth, sample autogenous cutting changes to mouth and flow cell entrance, described sample gas flow cell is located in incubation cavity.
Further, described sample gas flow cell side is also provided with temperature controller, control heater temperature.
Further, described sweep gas entrance is provided with manual needle valve, regulates and purges air flow rate.
Further, described flow cell entrance is positioned at flow cell center, and described flow cell outlet is positioned at flow cell both sides.
Further, between described glass vision panel and circulation stream export, sweep gas way outlet is installed, provides constant-temperature constant-current gas to purge cover glass form.
Further, described incubation cavity is made up of heat-insulation layer and shell.
The beneficial effects of the utility model are,
Disclosed in the utility model, a kind of intelligent constant-temperature flow cell device, carries out constant temperature to sample gas, carries out purging to ensure that sample gas is on dew point to form, ensures that form is not contaminated, ensure that precision of analysis and the reliability of laser analysis instrument.
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model
Fig. 2 is gas flow path schematic diagram of the present utility model;
In figure, 1, sample gas flow cell 2, well heater 3, temperature controller 4, sweep gas entrance 5, glass vision panel 6, external flange 7, demarcate autogenous cutting changes to mouth 8, sample autogenous cutting changes to mouth 9, flow cell entrance 10, flow cell outlet 11, incubation cavity 12, manual needle valve 13, sweep gas way outlet.
Embodiment
In order to deepen, to understanding of the present utility model, to be described in further detail the utility model below in conjunction with drawings and Examples.Following examples only for clearly the technical solution of the utility model being described, and can not limit protection domain of the present utility model with this.
As shown in Figure 1, intelligent constant-temperature flow cell device, comprise sample gas flow cell 1, well heater 2, sweep gas entrance 4, glass vision panel 5, external flange 6, demarcate autogenous cutting and change to mouth 7, sample autogenous cutting changes to mouth 8, flow cell entrance 9, flow cell outlet 10 and incubation cavity 11, well heater 2 is arranged with outside sample gas flow cell 1, sample gas flow cell 1 symmetria bilateralis is provided with glass vision panel 5, external flange 6, sample gas flow cell 1 is arranged with flow cell outlet 10, sweep gas entrance 4 is provided with below sample gas flow cell 1, be provided with demarcation autogenous cutting above sample gas flow cell 1 and change to mouth 7, sample autogenous cutting changes to mouth 8 and flow cell entrance 9, sample gas flow cell 1 is located in incubation cavity 11.
Intelligent constant-temperature flow cell device, thermostatic mode is that sample gas passes through sampling heating system by preliminary for sample gas constant temperature more than 160 DEG C, and circulate pond entrance, heated whole device by well heater 2, and temperature controls at about 200 DEG C.Carry out temperature by temperature controller 3 to control, and provide high/low temperature and report to the police, displays temperature output correlation signal.Specific design is reported to the police as low temperature 180 DEG C, high temperature 220 DEG C, and system heating precision is ± 1 DEG C.
Sweep gas way outlet 13 exports between 10 in glass vision panel 5 and flow cell, by well heater 2 Synchronous Heating sweep gas to about 200 DEG C, there is provided constant-temperature constant-current gas to purge glass vision panel, make it to form air curtain before glass vision panel, and sample gas is not contacted with glass vision panel, reach and make the not contaminated effect of form.By regulating manual needle valve 12, regulating and purging air flow rate, being generally 2L/Min, source purge gas is required to be without oily anhydrous source of the gas.
Sample gas flow cell medial inlet place flows into, exit, both sides mixes with sweep gas flows out, sample gas is constant temperature in sample gas flow cell 1 also, when exit is mixed with sweep gas, the temperature difference can not be deposited, and avoid impurity to produce, its topology layout is that flow cell entrance 9 is positioned at flow cell center, and flow cell outlet 10 is positioned at sample gas flow cell 1 both sides.
This device is when temperature alarming, and transfer valve is all in closed condition.When temperature is in normal condition, when duty is for analyzing, sample gas inlet transfer valve is opened, and demarcate gas entrance transfer valve and close, sample gas is circulated, and pond is analyzed, sweep gas synchronous working; During demarcation state, sample gas inlet transfer valve cuts out, and demarcates gas entrance transfer valve and opens, allow calibrating gas enter into flow cell, demarcate equipment.
The utility model intelligent constant-temperature flow cell device, provides heat-insulation and heat-preservation measure by heat-insulation layer and shell, and insulation material is according to 150 DEG C of heat insulation material thickness of temperature difference design.
Be noted that, the above embodiment is unrestricted to the explanation of technical solutions of the utility model, the equivalent replacement of art those of ordinary skill or other amendments made according to prior art, as long as do not exceed thinking and the scope of technical solutions of the utility model, all should be included within the interest field required by the utility model.
Claims (6)
1. an intelligent constant-temperature flow cell device, it is characterized in that comprising sample gas flow cell, well heater, sweep gas entrance, glass vision panel, external flange, demarcate autogenous cutting and change to mouth, sample autogenous cutting changes to mouth, flow cell entrance, flow cell outlet and incubation cavity, well heater is arranged with outside described sample gas flow cell, described sample gas flow cell symmetria bilateralis is provided with glass vision panel, external flange, described sample gas flow cell is arranged with flow cell outlet, sweep gas entrance is provided with below described sample gas flow cell, be provided with demarcation autogenous cutting above described sample gas flow cell and change to mouth, sample autogenous cutting changes to mouth and flow cell entrance, described sample gas flow cell is located in incubation cavity.
2. the intelligent constant-temperature flow cell device according to claims 1, is characterized in that: described sample gas flow cell side is also provided with temperature controller, control heater temperature.
3. the intelligent constant-temperature flow cell device according to claims 1, is characterized in that: described sweep gas entrance is provided with manual needle valve, regulates and purges air flow rate.
4. the intelligent constant-temperature flow cell device according to claims 1, is characterized in that: described flow cell entrance is positioned at flow cell center, and described flow cell outlet is positioned at flow cell both sides.
5. the intelligent constant-temperature flow cell device according to claims 1, is characterized in that: be provided with sweep gas way outlet between described glass vision panel and circulation stream export, and provides constant-temperature constant-current gas to purge cover glass form.
6. the intelligent constant-temperature flow cell device according to claims 1, is characterized in that: described incubation cavity is made up of heat-insulation layer and shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420865246.0U CN204389374U (en) | 2014-12-30 | 2014-12-30 | Intelligent constant-temperature flow cell device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420865246.0U CN204389374U (en) | 2014-12-30 | 2014-12-30 | Intelligent constant-temperature flow cell device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204389374U true CN204389374U (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420865246.0U Expired - Fee Related CN204389374U (en) | 2014-12-30 | 2014-12-30 | Intelligent constant-temperature flow cell device |
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| CN (1) | CN204389374U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136670A (en) * | 2015-08-20 | 2015-12-09 | 东北石油大学 | Liquid transmission spectrum test optical chamber with function of keeping constant temperature |
-
2014
- 2014-12-30 CN CN201420865246.0U patent/CN204389374U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136670A (en) * | 2015-08-20 | 2015-12-09 | 东北石油大学 | Liquid transmission spectrum test optical chamber with function of keeping constant temperature |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20181230 |
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| CF01 | Termination of patent right due to non-payment of annual fee |