CN203385598U - High-temperature protective tube for waste incineration sampling probe - Google Patents

High-temperature protective tube for waste incineration sampling probe Download PDF

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Publication number
CN203385598U
CN203385598U CN201320516056.3U CN201320516056U CN203385598U CN 203385598 U CN203385598 U CN 203385598U CN 201320516056 U CN201320516056 U CN 201320516056U CN 203385598 U CN203385598 U CN 203385598U
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China
Prior art keywords
sampling probe
casing
groove
double
mounting flange
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Active
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CN201320516056.3U
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Chinese (zh)
Inventor
周长征
张岩
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Sick Maihak (beijing) Instrument Co Ltd
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Sick Maihak (beijing) Instrument Co Ltd
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Abstract

The utility model relates to a high-temperature protective tube for a waste incineration sampling probe. The protective tube comprises a protective casing, a flange plate with a sealing groove, a sealing gasket and a heating body, wherein the protective casing comprises an inner casing, an outer casing, a flue mounting flange plate and a sampling probe mounting flange plate, the part between one ends of the inner casing and the outer casing is sealed to form a double-layer sealed casing with an annular cavity, the other ends of the casings are fixed by the sampling probe mounting flange plate, the flange plate with the sealing groove is provided with an annular groove, a rubber gasket is placed in the groove, the inner casing of the double-layer sealed casing can be inserted into the groove and is tightly combined with the rubber gasket through a fixing bolt to achieve the sealing effect, a round hole for the insertion of a sampling probe rod is formed in the center of the flange plate with the sealing groove, the sealing gasket is mounted between the sampling probe mounting flange plate and the flange plate with the sealing groove, and the heating body is placed inside the annular cavity of the double-layer sealed casing. By adopting the protective tube provided by the utility model, the low-temperature and high-humidity flue gas inside the flue can be fully heated to the temperature above the acid dew point before being sucked to the pre-filter of the sampling probe rod so as to prevent the blockage of a corrosive substance and the corrosion.

Description

Waste incineration sampling probe high temperature protection pipe
Technical field
The utility model relates to a kind of waste incineration sampling probe high temperature protection pipe.
Background technology
Waste incineration industry and heat-engine plant wet depickling sulfur removal technology are one of main treatment process of fume environment protection discharge.This technique efflux the low temperature in environment monitoring point flue, high humidity, high viscosity dirt, if the flue gas of highly corrosive is extracted it with common extraction heated probe feeler lever (more than 120 ℃) or the high temperature extraction heated probe feeler lever (more than 185 ℃) of continuous monitor system, the feeler lever directly contacted with flue gas and stopple coupon can be in a short period of time (general several hours) is corroded and damages and stop up, environment monitoring can't be worked with gas monitoring system, have a strong impact on the continuous monitoring of emission gases and the supervision of law enforcement of environmental administration, and bring a large amount of maintenance works to user maintainer, cause direct economic loss.
The incinerator that current domestic waste incineration industry adopts is varied, and the waste gas complete from boiler combustion generally passes through dedusting, except after acid treatment, by induced draft fan, is disposed in atmosphere.Yet burned material and burning process as rubbish are varied, cause waste gas highly acid, the strong basicity gas composition of discharge many, add low temperature and liquid water content high (generally approaching saturated), make flue gas corrosion extremely strong, drop is combined (being much strong acid and strong base salt) with flue dust, make flue dust become mud shape body, there is extremely strong viscosity and corrosivity.The heat-engine plant wet sulfur removal technology also has similar operating mode.Such on-the-spot environmental protection efflux gas monitoring system is taked the extraction-type sampling method mostly at present, being about to sampling probe is arranged on flue or chimney outer wall, go deep in flue gas, gas being extracted with a sampling feeler lever (heat or do not heat), then by band, accompany hot sampling line that gas to be measured is delivered to analyser analyzed.The method is for comparatively severe operating mode, as gas temperature lower than 80 degree, dustiness higher (>50mg/m3), moisture high (approach and satisfy to supersaturation), while being corrosive gas, can cause sampling feeler lever at short notice because the corrosive liquid of sand and dust in conjunction with stickum, acidity and the water-soluble formation of alkaline gas of steam formation is corroded, stops up, have a strong impact on the normal operation of system.For this kind of situation, on current industry, more employing is feeler lever and probe conducting self-heating method, utilizes heating wire that feeler lever and probe are heated above to the temperature of acid dew point, thereby avoids the local corrosion phenomenon.But the method that there is no solves stickum and enters the probe Corrosion blockage problem that feeler lever, filter core inside cause.
Prior art is that the feeler lever in flue gas partly is with to heating, with heating wire, is heated to far above (185 ℃) more than acid dew point, wishes to prevent that feeler lever and probe Corrosion blockage from occurring.For removing the corrosivity flue dust, be in the feeler lever front end increases by a netted or metal sintering filtrator flue dust enters stopple coupon in preventing flue gas.But in low-temperature flue gas, above two kinds of measures all can't solve blockage problem fully, because flue-gas temperature lower (in 80 ℃) in flue, humidity is large (approaching saturated) very, and when dustiness is higher (more than 50mg/m3), a large amount of dust can be combined into mud shape stickum with the liquid or the moisture that suspend around it, they can be attached to filter surfaces, cause plugged filter, and contain acidic materials in this stickum, also can corrode filtrator.Even regularly also can't blow down with powerful blowback manually or automatically.After 1-2 days, filter core and sampling feeler lever even probe body are all stopped up fully.Only have by heavy manually repeating and dredge the operation that maintains reluctantly monitoring system.
The utility model content
In view of above-mentioned; the purpose of this utility model is to provide a kind of waste incineration sampling probe high temperature protection pipe; it can make low temperature in flue, high-humidity gas fume fully be heated before being extracted to sampling feeler lever fore filter, be warming up to acid dew point more than, thereby thoroughly prevent the obstruction of corrosive substance and the generation of corrosion.
For this reason, the utility model is by the following technical solutions:
A kind of waste incineration sampling probe high temperature protection pipe is characterized in that comprising:
Protective casing, by inner sleeve, outer tube, flue mounting flange and sampling probe mounting flange, formed, the double-layer seal sleeve pipe is comprised of inner sleeve and outer tube, inner sleeve is longer than outer tube, between both ends of internal and external casing, shut, formation is with the double-layer seal sleeve pipe of ring-like cavity, and the flue mounting flange is arranged on the outer wall of outer tube, and the sampling probe mounting flange is fixed on the other end of double-layer seal sleeve pipe;
Ring flange with seal groove, this ring flange has an annular groove, place rubber washer in groove, the inner sleeve of double-layer seal sleeve pipe can insert in this groove and combine closely by set bolt with rubber washer and reach sealing effectiveness, and this ring flange center is provided with for sampling the circular hole of feeler lever insertion;
Gasket seal, be arranged between sampling probe mounting flange and the ring flange with seal groove;
The Integral forming type calandria, be Long Circle cover type, is placed in the ring-like cavity of double-layer seal sleeve pipe.
Described calandria is wound around and is formed by the high temperature resistant adhesive plaster of multilayer and resistance wire.
The utility model had both guaranteed the continuity of sampling probe at high humidity, low temperature, highly corrosive smoke sampling, also can not bring any negative effect to measurement result, and had effectively prevented corrosion and the generation of stopping up.And because the sleeve portion length of protective device is longer than the sampling feeler lever, thereby the flue dust blocked in most of flue gas directly impacts on sampling feeler lever and fore filter, has further avoided stopping up and corrosion.
The utility model has the advantage of:
1. thoroughly solved the waste incineration industry on-line monitoring system difficult problem of long-term work under the mal-condition of low temperature, high corrosion for a long time;
2. thoroughly solved low temperature, high humidity and the highly corrosive flue gas Fast Heating problem before entering monitoring system;
3. thoroughly solved under the severe corrosive environment etching problem with the flue gas contact component;
4. thoroughly solved the problem of global formation calandria, maintained easily.
Through on-the-spot actual the use, oneself extends to normal 3 months the maintenance period of on-line monitoring system.The high temperature protection sleeve pipe can reach the heating effect of 185 ℃ ± 1 ℃ in the flue gas of low temperature and high relative humidity at the scene, and the parts of on-site sampling probe etc. and corrosive fume Long Term Contact are not corrosion and damaging fully.
The accompanying drawing explanation
Fig. 1 is the utility model composition diagram;
Fig. 2 extends the protective casing structural drawing for heating;
Fig. 3 is sheet gasket structure figure;
Fig. 4 is the flange plate structure figure with seal groove;
Fig. 5 is heating jacket;
Fig. 6 is flue mounting flange structural drawing.
Embodiment
The utility model relates to a kind of waste incineration sampling probe high temperature protection pipe, and it comprises:
Protective casing, by inner sleeve, outer tube, flue mounting flange and sampling probe mounting flange, formed, the double-layer seal sleeve pipe is comprised of inner sleeve and outer tube, inner sleeve is longer than outer tube, between both ends of internal and external casing, shut, formation is with the double-layer seal sleeve pipe of ring-like cavity, and the flue mounting flange is arranged on the outer wall of outer tube, and the sampling probe mounting flange is fixed on the other end of double-layer seal sleeve pipe;
Ring flange with seal groove, this ring flange has an annular groove, place rubber washer in groove, the inner sleeve of double-layer seal sleeve pipe can insert in this groove and combine closely by set bolt with rubber washer and reach sealing effectiveness, and this ring flange center is provided with for sampling the circular hole of feeler lever insertion;
Gasket seal, be arranged between sampling probe mounting flange and the ring flange with seal groove;
The Integral forming type calandria, be Long Circle cover type, is placed in the ring-like cavity of double-layer seal sleeve pipe.
Described calandria is wound around and is formed by the high temperature resistant adhesive plaster of multilayer and resistance wire.
Below in conjunction with accompanying drawing, describe in detail.
As shown in Figure 1.This protection tube is extended protective casing 1, calandria 2, gasket seal 3, is formed with ring flange 4, the flue mounting flange 5 of seal groove by heating.
As shown in Figure 2.The core that protective casing 1 is this device.These parts have realized stopping flue dust directly washing away and function that Fast Heating enters the inside pipe casing flue gas feeler lever.These parts are comprised of double-layer seal sleeve pipe, flue mounting flange and sampling probe mounting flange.Wherein inner sleeve 12, outer tube 11 are the SS316L stainless-steel pipe.The length of inner sleeve slightly is longer than outer tube.One end of internal and external casing is shut by a ring-like stainless steel substrates welding in concentric mode, has formed thus the structural member with ring-like cavity, and this ring-like cavity is for installing the Integral forming type calandria of heating flange inner tube.The other end at sleeve pipe also is welded with sampling probe mounting flange 13, for the ring flange 4 of jointing strip seal groove.
As shown in Figure 3, the material of gasket seal 3 is asbestos material, is arranged between sampling probe mounting flange 13 and the ring flange 4 with seal groove.Play the sealing function between two ring flanges, the sealing of protection tube inside is played to regulating action simultaneously.Leave the flange bolt hole on gasket seal 3.
As shown in Figure 4, with the ring flange 4 of seal groove, by a whole SS316L stainless steel, processed, its function is the heating cavity between the sealing inner and outer pipes, prevents that flue gas from entering cavity, causes the corrosion and damage of calandria.This ring flange 4 has an annular groove 41, wherein places a high-temperature resistant anti-corrosive silicone rubber gasket.The inner sleeve of protective casing can accurately insert in this groove 41 and combine closely by set bolt with packing ring, thereby reaches sealing effectiveness.Be designed with circular hole in the middle of ring flange 4, for sampling the insertion of feeler lever.
In order to heat the prolongation protective casing, make its temperature that reaches setting, need be in its annular housing holding integrated formation type calandria 2.As shown in Figure 5, calandria is designed to Long Circle cover type, and its diameter is greater than the protective sleeve diameter of inner pipe and is less than the protective sleeve outer tube diameter.Calandria is comprised of the high temperature resistant adhesive plaster of multilayer and the special winding of resistance wire, and the mode of taking two-layer high temperature adhesive plaster 21 to wrap bonding resistance wire 22 is wound around, and plays insulation and fixation.The operating voltage of calandria 2 is the 220V alternating current, and, with PT100 temperature sensor 23, by outside attemperating unit, makes the heating-up temperature of calandria 2 constant in 185 degrees centigrade.When installing, this group wire 24,25 drawn by the reserved 10mm wire guide of outer tube of heating prolongation protective casing.
As shown in Figure 6, the material of flue mounting flange 5 is the SS316L stainless steel, be welded on protective casing 1 outer wall, for by installation of guard sleeve at flue.Leave the flange bolt hole on it.
The above embodiments do not form any type of restriction to the desired protection domain of the utility model; claims of the present utility model have covered all modifications and changes; therefore, making various modifications for above-described embodiment all belongs in protection domain of the present utility model with changing.

Claims (2)

1. a waste incineration sampling probe high temperature protection pipe is characterized in that comprising:
Protective casing, by inner sleeve, outer tube, flue mounting flange and sampling probe mounting flange, formed, the double-layer seal sleeve pipe is comprised of inner sleeve and outer tube, inner sleeve is longer than outer tube, between both ends of internal and external casing, shut, formation is with the double-layer seal sleeve pipe of ring-like cavity, and the flue mounting flange is arranged on the outer wall of outer tube, and the sampling probe mounting flange is fixed on the other end of double-layer seal sleeve pipe;
Ring flange with seal groove, this ring flange has an annular groove, place rubber washer in groove, the inner sleeve of double-layer seal sleeve pipe can insert in this groove and combine closely by set bolt with rubber washer and reach sealing effectiveness, and this ring flange center is provided with for sampling the circular hole of feeler lever insertion;
Gasket seal, be arranged between sampling probe mounting flange and the ring flange with seal groove;
The Integral forming type calandria, be Long Circle cover type, is placed in the ring-like cavity of double-layer seal sleeve pipe.
2. waste incineration sampling probe high temperature protection pipe as claimed in claim 1 is characterized in that:
Described calandria is wound around and is formed by the high temperature resistant adhesive plaster of multilayer and resistance wire.
CN201320516056.3U 2013-08-22 2013-08-22 High-temperature protective tube for waste incineration sampling probe Active CN203385598U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320516056.3U CN203385598U (en) 2013-08-22 2013-08-22 High-temperature protective tube for waste incineration sampling probe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320516056.3U CN203385598U (en) 2013-08-22 2013-08-22 High-temperature protective tube for waste incineration sampling probe

Publications (1)

Publication Number Publication Date
CN203385598U true CN203385598U (en) 2014-01-08

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105806770A (en) * 2016-04-29 2016-07-27 河南省日立信股份有限公司 Instrument testing device capable of generating high temperature and high humidity
CN108593366A (en) * 2018-04-12 2018-09-28 国网天津市电力公司电力科学研究院 The combined smoke sampling pressure measuring tube group of Portable heating

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105806770A (en) * 2016-04-29 2016-07-27 河南省日立信股份有限公司 Instrument testing device capable of generating high temperature and high humidity
CN105806770B (en) * 2016-04-29 2018-07-24 河南省日立信股份有限公司 A kind of instrument experimental rig that high temperature and humidity occurs
CN108593366A (en) * 2018-04-12 2018-09-28 国网天津市电力公司电力科学研究院 The combined smoke sampling pressure measuring tube group of Portable heating

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