CN105300745A - Adjustable water-cooling sampling gun device for boiler and sampling method - Google Patents
Adjustable water-cooling sampling gun device for boiler and sampling method Download PDFInfo
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- CN105300745A CN105300745A CN201410261940.6A CN201410261940A CN105300745A CN 105300745 A CN105300745 A CN 105300745A CN 201410261940 A CN201410261940 A CN 201410261940A CN 105300745 A CN105300745 A CN 105300745A
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Abstract
The invention belongs to the field of boiler combustion testing devices, in particular to a water-cooling sampling device and method for sampling high-temperature flue gas in a hearth during the combustion process of a boiler. The sampling device is characterized by comprising detachable multi-stage water-cooling sampling tubes, wherein the different water-cooling components are connected through threads; a red copper gasket is arranged between every two adjacent water-cooling components for sealing. The sampling device is supported by high-temperature resistant metallic supports, thereby being sufficient in rigidity. During a sampling process, sampling of flue gas at different positions of the high-temperature hearth can be realized by assembling different numbers of sampling components.
Description
Technical field
The invention belongs to boiler combustion proving installation scope, is in a kind of boiler combustion process, can realize the water-cooled sampler to the sampling of burner hearth high-temperature flue gas and method.
Background technology
Producing a large amount of pollutant in boiler combustion process, is the basis of pollutant catabolic gene to the understanding of burner hearth internal contamination thing action rule, and in burner hearth, the accurate sampling of fume sample is the prerequisite of this action rule of research.Sampling gun is a kind of usual means gathered specific combustion apparatus products of combustion, but the sampling gun of routine is all sample after boiler back end ductwork, electrostatic precipitation and after desulfurization, these places are all very low relative to burner hearth internal temperature, and the sampling gun for these local exploitations is difficult to the high temperature bearing burner hearth.Also lack for burner hearth at present, especially the high temperature sampling gun of power plant boiler burner hearth central high temperature flame zone.
Summary of the invention
The object of this invention is to provide a kind of device and method that can carry out sample analysis in burner hearth internal high temperature environment, it is characterized in that, sampling gun is a kind of dismountable multistage sampler, and install water cooling plant additional at sampling gun, sampling gun is made to be no more than working temperature by water-cooled, ensure, in sampling process, the physicochemical property of sample can not be made to change.
In the present invention, install inlet pipeline and outlet pipeline additional at sampling gun, inlet pipeline and outlet pipeline are interconnected by refractory metal support, outlet pipeline inside socket sample pipe.Be threaded connection assembling more piece inlet pipeline, outlet pipeline and stopple coupon stainless steel water-cooled assembly composition water-cooling welding torch, the sealing between each water-cooled assembly is realized by red copper pad.According to above-mentioned device, the invention provides a kind of water-cooled sampling gun method of operating, in test site assembled components, after assembling, the sampling gun passing into chilled water is stretched into boiler furnace, extract burner hearth flue gas by the latter linked air-extractor of sampling gun and and then analyze.Consider test burner hearth, in-site installation and traffic condition, sampling gun length can be made up of different length and different water-cooled assembly.
The present invention compares with general routine sampling rifle, online or the non-on-line period of the different high-temperature area in boiler internal center can be realized, by water-cooled, ensure that sampling gun can normally run in high temperature environments, and do not change the physicochemical property of sample, more can reflect the real process of burning.
Accompanying drawing explanation
Fig. 1 is water-cooled sampling gun device one-piece construction schematic diagram.
Wherein 1 is cooling water inlet pipe, and 2 is support cutting ferrule, and 3 is middle threaded connectors, 4 is stopple coupon screw top joints, and 5 is cooling water outlet pipes, and 6 is major thread joints, 7 is stopple coupons, 8 is stopple coupon tailing screw flight joints, and 9 is cooling water inlets, and 10 is coolant outlets, 11 is gas approach, 12 is exhanst gas outlets, and 13 is sampling gun head temperature sensors, and 14 is sampling gun tail temperature sensors.
Embodiment
The present invention is that a kind of dismountable multisection type can the water-cooling welding torch of safe operation in high temperature environments.At the cold pipeline of sampling gun adding circulated water, cooling water inlet pipe road and cooling water outlet pipe road are interconnected by refractory metal support, outlet pipeline inside socket sample pipe.Be threaded connection assembling more piece stainless steel water-cooled assembly composition water-cooling welding torch, the sealing between each water-cooled assembly is realized by red copper pad.Consider test burner hearth, in-site installation and traffic condition, sampling gun length can be made up of different length water-cooled assembly.
Be explained below in conjunction with accompanying drawing.
The recirculated water cooling pipeline that water-cooled sampling gun mainly comprises stopple coupon and is made up of cooling water inlet pipe 1, cooling water outlet pipe 5 etc.Cooling water inlet pipe 1, material is stainless steel, 2 ~ 5 can be had to save, often save 1 ~ 2 meter, is interconnected with one another, is threaded through red copper gasket seal between joint and joint by middle threaded connector 3.4 is stopple coupon screw top joints, by red copper gasket seal, prevents gas leakage of leaking, and is directly connected with stopple coupon simultaneously, fixing stopple coupon.Cooling water outlet pipe 5, material is stainless steel, is often interconnected with one another by major thread joint 6, by red copper gasket seal between joint.7 is stopple coupons, and it is in the centre of cooling water outlet pipe 5, is also made up of more piece pipeline, and different length of tubing is threaded connection, and in order to ensure the relative position of water-cooled effect and internal and external channel, the stopple coupon 7 often saved and cooling water outlet pipe 5 centre arrange dividing plate and fix.8 is stopple coupon tailing screw flight joints, by red copper gasket seal, prevents gas leakage of leaking, ensures that stopple coupon is in center simultaneously.The support cutting ferrule 2 that cooling water inlet pipe 1 and cooling water outlet pipe 5 are made by exotic materials such as tungsten supports and fixes.
Recirculated cooling water enters from cooling water inlet 9, enters cooling water outlet pipe 5 by cooling water inlet pipe 1, discharges from coolant outlet 10.Flue gas enters from entering flue gas mouth 11, is connected from exhanst gas outlet 12 by gas sampling probe with other analytical instrument, thus realizes online or non-ly sampling boiler combustion process online.
In addition, sampling gun head and afterbody mounting temperature sensor 13 and 14 respectively, can Real-Time Monitoring sample position temperature and the temperature of flue gas after water-cooled sampling gun.By monitoring and then the adjustment discharge of temperature sensor 14 pairs of temperature, ensure that sampling gun maintains set point of temperature operated within range.
In sampling process, in test site assembled components, the sampling gun assembling water flowing stretches into boiler furnace, extracts burner hearth flue gas and and then analyze by the latter linked air-extractor of sampling gun.
The present invention can summarize with other the concrete form without prejudice to spirit of the present invention and principal character.Therefore, above-mentioned embodiment of the present invention all can only be thought explanation of the present invention and can not limit the present invention, and claims indicate scope of the present invention, and above-mentioned explanation does not all point out scope of the present invention.Therefore, any change in the implication suitable with claims of the present invention and scope, all should think to be included in the scope of claims.
Claims (4)
1. one kind can be carried out the device and method of sample analysis by diverse location in boiler furnace internal high temperature environment, comprise stopple coupon 7, by cooling water inlet pipe 1, cooling water outlet pipe 5, the recirculated water cooling pipeline that cooling water inlet 9 and coolant outlet 10 form, and by support cutting ferrule 2, middle threaded connector 3, stopple coupon screw top joint 4, major thread joint 6, the assembling of stopple coupon tailing screw flight joint 8 composition and holding components, the temperature sensor system be made up of sampling gun head temperature sensor 13 and sampling gun tail temperature sensor 14, it is characterized in that, this sampler has dismountable multisection type structure of the on-line period of the flue gas that can realize boiler furnace diverse location, and can ensure in sampling process, to make the physicochemical property of sample change can the control temperature recirculated water cooling pipeline identical with sample position flue-gas temperature, and assembling components can be carried out in test site, the sampling gun assembling water flowing stretches into boiler furnace, by the power that the latter linked air-extractor of sampling gun provides, burner hearth flue gas enters stopple coupon 7 by gas approach 11, and enter air-extractor by exhanst gas outlet 12 and carry out gathering and then analyzing.
2. according to device and method according to claim 1, it is characterized in that, sampling gun installs additional inlet pipeline 1 and outlet pipeline 5, they are interconnected by refractory metal support 2, outlet pipeline 5 internal sleeve connects stopple coupon 7, be threaded connection assembling more piece stainless steel water-cooled assembly and stopple coupon composition water-cooling welding torch, the sealing between each water-cooled assembly is realized by red copper pad, and sampling gun length can be made up of different length and different water-cooled assembly.
3. according to sampling gun device and sampling method described in claim 1, it is characterized in that, sampling gun head and afterbody have installed sampling gun head temperature sensor 13 and tail temperature sensor 14 respectively, can Real-Time Monitoring sample position temperature and the temperature of flue gas after water-cooled sampling gun, according to the temperature after water-cooled sampling gun, adjustment discharge, makes flue gas remain within the scope of set point of temperature.
4. according to sampling gun device and sampling method described in claim 1, it is characterized in that, sampling gun length realizes regulating by the change of each component count and each length component, and general sampling gun is made up of 2 ~ 5 joints, and often saving length is 1 ~ 2 meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410261940.6A CN105300745B (en) | 2014-06-11 | 2014-06-11 | Adjustable boiler water cooling sampling gun apparatus and sampling method |
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| CN201410261940.6A CN105300745B (en) | 2014-06-11 | 2014-06-11 | Adjustable boiler water cooling sampling gun apparatus and sampling method |
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| CN105300745A true CN105300745A (en) | 2016-02-03 |
| CN105300745B CN105300745B (en) | 2019-03-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111781035A (en) * | 2020-07-09 | 2020-10-16 | 江苏方天电力技术有限公司 | High-temperature flue gas sampling device |
| CN113465997A (en) * | 2021-07-22 | 2021-10-01 | 安徽工业大学 | Rotary multifunctional flue gas sampling gun |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111781035A (en) * | 2020-07-09 | 2020-10-16 | 江苏方天电力技术有限公司 | High-temperature flue gas sampling device |
| CN113465997A (en) * | 2021-07-22 | 2021-10-01 | 安徽工业大学 | Rotary multifunctional flue gas sampling gun |
| CN113465997B (en) * | 2021-07-22 | 2024-05-17 | 安徽工业大学 | Rotary multifunctional smoke sampling gun |
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| CN105300745B (en) | 2019-03-29 |
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