CN207007761U - The probe protection sleeve device of high-temperature oxydation zirconium oxygen amount instrument - Google Patents

The probe protection sleeve device of high-temperature oxydation zirconium oxygen amount instrument Download PDF

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Publication number
CN207007761U
CN207007761U CN201720865592.2U CN201720865592U CN207007761U CN 207007761 U CN207007761 U CN 207007761U CN 201720865592 U CN201720865592 U CN 201720865592U CN 207007761 U CN207007761 U CN 207007761U
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CN
China
Prior art keywords
sleeve pipe
temperature
probe
protection sleeve
filter bowl
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CN201720865592.2U
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Chinese (zh)
Inventor
刘孟文
刘向英
王红霞
李志强
李红颖
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TANGSHAN SANYOU CHEMICAL INDUSTRIES Co Ltd
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TANGSHAN SANYOU CHEMICAL INDUSTRIES Co Ltd
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Abstract

It the utility model is related to a kind of probe protection sleeve device of high-temperature oxydation zirconium oxygen amount instrument.Including protection sleeve pipe; one end of protection sleeve pipe is provided with plugging plate; the other end of protection sleeve pipe is provided with Double-face flange; the main body of protection sleeve pipe is double-layer sleeve structure, including outer tube and liner sleeve pipe, and heat-barrier material is filled between outer tube and liner sleeve pipe; liner sleeve pipe is set with filter bowl shield away from Double-face flange one end by trip bolt; filter bowl shield is hollow structure, and built-in high temperature resistant filter bowl is simultaneously fixed by clamp nut, and shield window is provided with filter bowl shield.The utility model, which avoids the dismounting of ceramic body probe and loaded, occurs damage, crack conditions during use under burner hearth hot environment, hysteresis and damping characteristics with temperature change, avoid probe temperature that cataclysm occurs, so as to solve the fracture of ceramic zirconium oxide probe and dismount slow-paced problem, there is the advantages of simple in construction, easy to process, function is reliable.

Description

The probe protection sleeve device of high-temperature oxydation zirconium oxygen amount instrument
Technical field
It the utility model is related to the high temperature of the high temperature section flue gas oxygen content instrument for measuring coal-burning boiler or steel-making blast furnace The protection device of zirconia probe, specifically a kind of probe protection sleeve device of high-temperature oxydation zirconium oxygen amount instrument.
Background technology
Boiler(Steel-making blast furnace)The oxygen content of flue gas is examination boiler(Blast furnace)Efficiency of combustion, realize wind coal(Coke)Ratio The important measured parameter of control, the accuracy of Oxygen Amount in Flue Gas measurement directly influence coal electricity(Steel-making)The economy of process operation refers to Mark, in today of energy-conserving and environment-protective increasingly attention, by implementing Oxygen Amount in Flue Gas high-acruracy survey, optimize boiler combustion system control Scheme processed, further improves pot(It is high)Stove operational efficiency, realize that Sciences Economics operation becomes more meaningful.
High-temperature oxydation zirconium oxygen amount instrument is that in the market is emerging a kind of for measuring boiler or steel-making blast furnace cigarette in recent years The novel meter of gas oxygen content, different from the original low-temperature oxidation zirconium instrument installed in boiler high temperature economizer entrance, it is direct It is more than 800 DEG C of high-temperature areas, the boiler of the firm all burnt generation of fuel installed in boiler combustion flue-gas temperature(Blast furnace)Flue gas contains Oxygen amount is just detected that being directly used in control enters boiler by instrument(Blast furnace)Fuel quantity and air quantity, not only overcome original low The interference that warm zirconium oxide instrument is brought by Air Leakage Into Boilers influence, also makes the lag time of oxygen content measurement control system passage contract significantly It is short, make Combustion System more timely and effective, accurately measured by oxygen amount, further optimize low nitrogen burning technological operation, reduce nitrogen oxygen Compound generates, and not only produces economic benefit, also realizes and generates environmental benefit.
However, long-term work is more than the zirconia probe under 800 DEG C of hot environments in temperature, its material is refractory ceramics, That is zirconia ceramics and aluminium oxide ceramics, the detecting element for measuring flue gas oxygen content are by yittrium oxide and zirconia solid electricity Material manufacture is solved, this solid electrolyte, with higher oxygen conduction, passes through measurement when temperature is more than 700 DEG C Oxygen concentration potential measures flue gas oxygen content;Aluminium oxide ceramics is exactly the corundum ceramic being commonly called as, and has higher hardness and high temperature resistant Performance, can long-term work in 1600 DEG C of environment, still, fragility is a deadly defect of ceramic material, zirconia ceramics and Aluminium oxide ceramics is no exception, the fragility of ceramic material, and its performance directly perceived is:Fracture is no sign under applied load, quick-fried Hair property, performance is that mechanical shock resistance and thermal shocking are poor indirectly, and in essence, fragility is mainly by Bonding Properties Determined with crystal structure, in ceramics, due to lacking independent sliding system, material once is difficult to lead in stress Cross the caused plastic deformation of sliding and carry out relaxed stress, and in terms of microstructure, the brittle presence for having its source in micro-crack, easily In the high concentration for causing stress, therefore, it is highly desirable to design new device to alleviate, overcome above mentioned problem, extending it makes Use the life-span.
Utility model content
The utility model aims to solve the problem that above mentioned problem, and the dismounting of ceramic body probe and loading burner hearth are can ensure that so as to provide one kind Ceramics probe does not damage, is broken and avoided the high-temperature oxydation of probe temperature generation cataclysm during use under hot environment The probe protection sleeve device of zirconium oxygen amount instrument.
The utility model solves described problem, and the technical scheme of use is:
A kind of probe protection sleeve device of high-temperature oxydation zirconium oxygen amount instrument, including protection sleeve pipe, one end of protection sleeve pipe Plugging plate is provided with, the other end of protection sleeve pipe is provided with Double-face flange, and the main body of protection sleeve pipe is double-layer sleeve structure, including Outer tube and liner sleeve pipe, heat-barrier material is filled between outer tube and liner sleeve pipe, liner sleeve pipe is away from Double-face flange one end Filter bowl shield is set with by trip bolt, filter bowl shield is hollow structure, and built-in high temperature resistant filter bowl is simultaneously consolidated by clamp nut It is fixed, shield window is provided with filter bowl shield.
Using the utility model of above-mentioned technical proposal, compared with prior art, the characteristics of it is protruded, is:
Ensure that ceramics probe is not damaged, broken during use under the dismounting of ceramic body probe and loading burner hearth hot environment Split, the hysteresis and damping characteristics of the temperature change having, avoid probe temperature that cataclysm occurs, so as to solve ceramic zirconium oxide spy Head rupture and the slow-paced problem of dismounting, have the advantages of simple in construction, easy to process, function is reliable.
Preferably, the further technical scheme of the utility model is:
The throttling pad being placed in filter bowl shield is installed between high temperature resistant filter bowl and liner sleeve pipe.
Temperature thermocouple is provided with the tube wall of liner sleeve pipe.
Shield is cylindrical, and post surface is uniformly provided with three 40 × 140mm shield window, and in 120 ° of distributions.
Protection sleeve pipe, filter bowl shield are made using high temperature resistant stainless steel alloy 310S materials.
Heat-barrier material is silicon dioxide aerogel heat-insulating composite material.
The centre of clamp nut is provided with circular hole window.
Plugging plate is sleeved on liner sleeve pipe and is welded as a whole with outer tube.
Brief description of the drawings
Fig. 1 is the utility model embodiment structural representation;
Fig. 2 is mounting structure schematic diagram of the utility model embodiment on boiler;
Fig. 3 is mounting structure schematic diagram of the zirconia probe on boiler in the prior art;
In figure:Double-face flange 1;Outer tube 2;Liner sleeve pipe 3;Temperature thermocouple 4;Trip bolt 5;Filter bowl shield 6;Clamp nut 7;Heat-barrier material 8;Throttle pad 9;Shield window 10;High temperature resistant filter bowl 11;Zirconia probe mounting seat Flange 12;Zirconia probe adpting flange 13;Furnace wall and furnace wall backplate 14;Zirconia probe installs small flange 15;Oxidation Zirconium probe terminal box 16;Flange gasket 17;Zirconia probe 18, circular hole window 19, plugging plate 20.
Embodiment:
With reference to embodiment, the utility model is described in further detail, and purpose, which is only that, more fully understands the utility model Content, therefore, the cited case are not intended to limit the scope of protection of the utility model.
Referring to Fig. 1, Fig. 2, Fig. 3, the probe protection sleeve device of high-temperature oxydation zirconium oxygen amount instrument of the present utility model includes Protection sleeve pipe, one end of protection sleeve pipe are provided with plugging plate 20, and the other end of protection sleeve pipe is provided with Double-face flange 1, protective case The body design of pipe is double-layer sleeve structure, is made up of outer tube 2 and liner sleeve pipe 3, outer tube 2 and liner sleeve pipe 3 respectively with Double-face flange welds, and annulus is filled with thermostable heat insulation material 8, liner sleeve pipe 3 between outer tube 2 and liner sleeve pipe 3 Probe flue gas measured hole position away from the one end of Double-face flange 1 is set with detachable progress cleaning and maintenance by trip bolt 5 Filter bowl shield 6, filter bowl shield 6 are hollow structure and cylindrical, and post surface is uniformly provided with three 40 × 140mm shield window Mouth 10, and in 120 ° of distributions, high temperature resistant filter bowl 11 built in filter bowl shield 6 is simultaneously fixed, high temperature resistant filter bowl 11 1 by clamp nut 7 End seal is closed and another end opening, the inside lining pipe 3 of open end, and filtering accuracy is 3 μm, long 150mm, and internal diameter is φ 32mm, Dust of the filter bowl shield 6 in the outside of the flue gas measured hole of zirconia probe 18 filtering flue gas, prevents soot dust granule thing from blocking oxygen Change the measured hole on zirconium probe 18, the design of big shield window 10 is expanded as the high temperature resistant filter bowl 11 of filter core and connecing for flue gas Contacting surface is accumulated, and can ensure the requirement into the measured hole exhaust gas volumn of zirconia probe 18, protection sleeve pipe, filter bowl shield 6 are using resistance to High temperature stainless steel alloy 310S materials are made.
The device mainly includes being used for and the zirconia probe mounting seat flange 12 and oxygen on furnace wall and furnace wall backplate 14 Change the part of Double-face flange 1, double thermal insulation room part, throttling heated active connection filter bowl shield of the zirconium probe connection of adpting flange 13 Cover five link structure types such as 6 parts, smoke filtration filter bowl detection room part, heat-insulated room temperature survey, each part It is mutually linked integrally, according to each several part present position and effect, is divided into the height that filter bowl shield 6 is connected pipeline section with liner sleeve pipe 3 The liner sleeve pipe 3 that warm area, the liner sleeve pipe 3 of double-decker are located at middle warm area and double-decker in stove is located in stove wall bushing Low-temperature space, due to the present apparatus be arranged on stove in 850 DEG C~1050 DEG C temperature environments, this requires the metal material of protection sleeve pipe Must have Cutting free processing, high temperature resistant, creep resisting characteristic, and the protection sleeve pipe of the present apparatus, filter bowl shield 6 use resistance to height Warm stainless steel alloy 310S materials are made, and it is that a kind of high temperature resistant reaches 1200 DEG C, continuously can be used in 1150 DEG C of environment Exotic material, and not more than 1050 DEG C of burner hearth environment its temperature where high-temperature oxydation zirconium probe 18, from 310S Stainless steel is fully able to meet device requirement, in order to improve device performance, increases the service life, and the utility model is by outer tube 2 Pipe thickness be set to 5mm, throttling heating room be connected part of wall thickness with liner sleeve pipe 3 and is set to 8mm, it is intended that increases and is connected The heating surface area and thermal capacitance of pipeline section intensity in high temperature environments and pipeline section, its heat absorbed is set to be passed rapidly by heat transfer Pass liner sleeve pipe 3, the wall thickness of liner sleeve pipe 3 is set to 3.5~4mm, while proof strength from relatively thin wall thickness 310S not Become rusty steel pipe, it is therefore an objective to reduces the thermal capacity of tube wall, can receive and quickly conduct the heat of the outer wall of filter bowl shield 6, uniformly add The ceramic body of zirconia probe 18 that heat is inserted in it, in addition, the liner sleeve pipe 3 of relatively thin wall thickness is also beneficial to visit in dismounting zirconium oxide First 18 when needing uniform decrease in temperature, can be with very fast in the presence of the cold air that the temperature of ceramic body and interior environment can suck outside Speed uniformly decline.
It is real mainly to conduct heat by liner sleeve pipe 3 for the rising change of the temperature of environment in zirconia ceramics body and surrounding It is existing because be filled with high efficiency heat insulation material 8 between outer tube 2 and liner sleeve pipe 3, the heat that outer tube 2 absorbs due to The retardation of heat-barrier material 8 makes its internal space temperature of lining pipe 3 change influence very little, the titanium dioxide that heat-barrier material 8 is selected Silica aerogel heat-insulation composite material, it collects superinsulation, high temperature resistant, non-ignitable, flame resistant burn-through, super-hydrophobic, sound insulation damping, environmental protection Low-density, insulation, there is the performances such as certain elasticity in the A level heat-insulating heat-preserving materials of one, density is only 0.23g/cm3, tool There is three-dimensional manometer unique texture, can effectively suppress the gentle body convection heat transfer' heat-transfer by convection of solid-state heat transfer, be the minimum solid-state of current thermal conductivity Material(Normal temperature 0.015W/m.K), there is excellent heat-proof quality, the thickness degree of heat-barrier material 8 of the utility model device is set to 20mm, it is the i.e. zirconia ceramics body in order to ensure to obtain preferable temperature lag carryover effects in device inner space Temperature change is mainly heated to heat up by the heat transfer of liner sleeve pipe 3, is cooled by controllable cold air influx, is prevented from producing The raw cataclysm temperature difference.
In order to control the speed of temperature change, prevent temperature shock, further measure is that we throttle in heating A diameter of 28mm throttling pad 9 is designed between room and smoke filtration detection room, it is on the one hand by zirconia probe 18 ends filter bowl detection room separated with insulation room, reduction flue gas to heat-insulated room scurry into by fine dusts take to every Thermal capacitance room, whole oxidation is on the other hand adjusted by cold air inlet outside control throttling stove when dismounting zirconia probe 18 Zirconium 18 porcelain tube space temperature rises of probe or the speed of temperature drop, because the head of zirconia probe 18 is diameter 26mm hemisphere face shape, In the range of 0-13mm of the probe head by the throttle orifice for the pad 9 that throttles, position is different, flows through the cold air difference of throttle orifice, Just as the fluid flow difference that a valve opening difference flows through, through measuring and calculating, probe does not enter circulation area maximum during throttle orifice For:615.44mm2, the air capacity maximum of 3mm annular air gaps around probe ceramic body is then flowed through, air velocity is most fast, visits Head ceramic body programming rate is most slow(During installation), or internally lining pipe 3 cool it is most fast(During dismounting), after probe is fully inserted into throttle orifice Circulation area is:84.78mm2, circulation area is when inserting half:482.775mm2
In order to preferably control, temperature change in monitoring arrangement, further technical measures be protection sleeve pipe most in Warm area in the high-temperature region at end, middle part, liner sleeve pipe 3 where the low-temperature space in boiler setting wall bushing outer wall on every 200mm installs the K-type temperature thermocouple 4 of a tube wall temperature of measurement liner sleeve pipe 3, and temperature thermocouple 4 is fixed by screws in The outer surface of liner sleeve pipe 3, the electrode wires of temperature thermocouple 4 penetrate special porcelain bead, ensure insulation, are entered according to zirconia probe 18 Depth, by comparing the self-temperature of zirconia probe 18 and the tube wall temperature of liner sleeve pipe 3, grasp the speed that probe inserts or pull out Degree, accomplishes science, standard operation.
In order to reduce length of the zirconia probe 18 outside stove, increase probe insertion depth, make the head of zirconia probe 18 Measured hole is located at the larger region of flow of flue gas, increases the sensitivity of measurement, the interference for overcoming mounting flange to leak out, therefore design Size for connection supporting Double-face flange 1.
In order to improve throttling pad 9 and the concentricity of liner sleeve pipe 3 and the influence of high-temperature expansion, further technology is arranged It is to devise throttling pad 9 and the supporting end construction form of liner sleeve pipe 3 to apply, and considers the respective outer side edges between pad and is heated swollen Swollen, the throttling external diameter of pad 9 is 39mm, and internal diameter is that the length of fit between 28mm. throttling pads 9 and liner sleeve pipe 3 is 5mm.
For convenience to the end measured hole permeability inspection of zirconia probe 18 and the cleaning of the dust stratification of high temperature resistant filter bowl 11 and dimension Shield, ensure that inside lining pipe 3 transmits heat, further technical measures are to devise the structure type of filter bowl shield 6:
(1)The free end of filter bowl shield 6 is provided with the clamp nut 7 of external thread structure, and the centre of clamp nut 7 is provided with circular hole Window 19, high temperature resistant filter bowl 11 are fixed in filter bowl shield 6 by clamp nut 7, installation high temperature resistant filter bowl 11 easy to disassemble, tightly Gu the circular hole window 19 among nut 7 expands the area that high temperature resistant filter bowl 11 filters flue gas, plus the periphery of filter bowl shield 6 Every 120 ° open up one and amount to the shield window 10 of three 40 × 140, the filter window gross area is reached 14900mm2, filter bowl shield The length of pipe section that cover 6 is mutually held in the mouth with liner sleeve pipe 3 is designed as 52mm, pipeline section wall thickness 8mm, plus the wall thickness 4mm of liner sleeve pipe 3, then This section of complexed metal thickness is that 12mm. increases metal heat, ensures the mechanical strength under high temperature, is connected pipeline section heating surface area 128011.52 mm2, plus other metal part surface areas of filter bowl shield 6, then the total heating surface of filter bowl shield 6, which accumulates, is 141200mm2
(2)One wide 8mm of outer surface car at away from the connection end 15mm of liner sleeve pipe 3, deep 2mm circular groove, is being filtered On cup shield 6, the screw of every 120 ° of processing, one M8 × 1.0 on the circular section away from the connection end 34mm of filter bowl shield 6, with 3 M8 × 1.0 hexagon socket head cap screws(310S)It is fixed in the circular groove of the connection end of liner sleeve pipe 3, unclamps fastening hexagon socket head cap screw, filter Cup shield 6 can slide along circular groove, be mixed up to adjust the direction of the upper shield window 10 of filter bowl shield 6 and angle, direction Three hexagon socket head cap screws are tightened, make filter bowl shield 6 that the relative change of position not occur, the flue gas of coal dust firing generation is in induced-draught fan Attraction under from the upward ascension in combustion zone flowing, enter from the shield window 10 of the bottom of filter bowl shield 6 through high temperature resistant filter bowl 11 The measured hole of zirconia probe 18, then flowed away from shield window 10 above, oxonium ion therein acts on zirconium oxide cell Oxygen concentration potential is produced on battery electrode, electric potential signal is amplified by meter electronics and carries out computing to obtain flue gas In oxygen content.
In order to block outer tube 2 to transmit heat by the inside lining pipe 3 of plugging plate between bilayer sleeve and overcome inside and outside set Differential expansion between pipe, further technical measures are:Plugging plate 20 between double-decker is sleeved on liner sleeve pipe, only welded The gap between plugging plate 20 and outer tube 2 is connect, and the gap between plugging plate 20 and liner sleeve pipe 3 is not welded, and internal diameter will be blocked It is defined as φ 42mm.
Draw because the plugging plate 20 between the heat-barrier material 8 and internal and external casing of thermal insulation layer is non-contact with the outer wall of liner sleeve pipe 3 Serve to heat conduction cut-off, make liner sleeve pipe 3, the ceramic body of zirconia probe 18 and between air layer temperature from Initial 20 DEG C(The zero in winter lower several years)Be increased to 950 DEG C of furnace inner environment temperature, institute's calorific requirement mainly by filter bowl shield 6 from Burner hearth is absorbed and completed along the tube wall of liner sleeve pipe 3 by heat transfer, and by calculating, each several part is increased to needed for 950 DEG C from 20 DEG C Heat is:Filter bowl shield 6 need to absorb heat 441.75KJ, and neck bush covers 3 pipes and need to absorbed heat 1281.86KJ, the ceramic body of zirconia probe 18 Need to be absorbed heat 1999.965KJ, i.e. the common calorific requirement 3281.825KJ of liner sleeve pipe 3, ceramic body, air layer therebetween, that is, Filter bowl shield 6 is said in addition to itself temperature rise draw heat, institute's calorific requirement, and pumping value are also sent for the space of liner sleeve pipe 3 " pump " It is itself to need more than 8 times, therefore, the temperature changing process of the ceramic body of zirconia probe 18 is a relatively slow process.
The installation operation method of zirconia probe 18 when boiler operatiopn is hot:
(1)Connecting cable between zirconia probe 18 to be mounted and live oxygen content transducer is connected, power transmission, makes instrument Preheating, the probe end temperature instruction situation of change shown on transmitter is observed, flange gasket 17 is put well, standard is carried out for installation It is standby.
(2)The probe installing port on the utility model probe protection sleeve device Double-face flange 1 should be made open before installation, profit With negative pressure in stove, stove 6 sufficiently cool cooling of the outer internal lining pipe 3 of cold air and filter bowl shield is allowed, by observing on liner sleeve pipe 3 The temperature of temperature thermocouple 4 grasps the set-up time, can be installed when low-temperature space temperature temperature close to outside stove.
(3)Hang up properly the chain sling that zirconium oxide is installed and used and adjust height, make zirconia probe 18 generally in level, slowly Slowly zirconia probe 18 is inserted into the mouth of pipe of liner sleeve pipe 3, while observes the temperature of liner sleeve pipe 3, the zirconium oxide in normal temperature state 18 ceramic bodies of popping one's head in slowly insert liner sleeve pipe 3 under the parcel for the cold air being drawn into outside stove in stove, by low-temperature space, in Warm area, high-temperature region are gradually heated by the sonochemical activity heating.
(4)When ceramic body length is 200mm or so outside stove, the speed injected is further reduced, adjustment amendment chain sling is high Degree, now the end of zirconia probe 18 has reached high-temperature heating pipeline section, slowly allows ceramic body fully heated, temperature rise, When ceramic body length is 100mm or so outside stove, the throttling hole site of throttling pad 9 has been arrived on the head of zirconia probe 18, at the moment More to slow down insertion speed in later 15mm distance ranges, observe 3 temperature and probe end temperature, by adjusting now Probe flows into the amount of cold air in the position of throttle orifice, control, grasps probe different parts temperature rising condition.
(5)After the head of zirconia probe 18 enters throttle orifice, the circulation area of pipeline air is by 615.44mm2It is gradually reduced To 84.78mm2, the reduction of cold air flows, it is meant that and the end to liner pipe cooling stage, quick heating up process Starting, liner sleeve pipe 3 absorbs heat from the heating surface of filter bowl shield 6, by heat transfer, make heat from high temperature section to middle-temperature section, Low-temperature zone transmission, own temperature gradually rise, by the uniform heated oxide zircon ceramic body of heat radiation.
(6)By two M18 × 1.5, bolt that length is 150mm penetrates zirconium oxide mounting seat flange 12, and with it is two-sided The installation screw of flange 1 connect, remove installation chain sling, using bolt as guide rail, be slowly pushed into until flange sealing surface contact, further Flange angle is adjusted, the length of precession M18 × 1.5 is 30mm fastening bolt(Supporting pad, spring shim), then with identical spiral shell Bolt changes the stay bolt used when guide rail, uniformly fixed.
(7)Transmitter displays temperature and oxygen amount situation of change are observed, operation is demarcated after 24 hours.
The operating method for dismantling the utility model protection sleeve pipe device together with zirconia probe 18 from body of heater:
(1)Four bolts being connected with the zirconium oxide mounting seat flange 12 on furnace wall and furnace wall backplate 14 are untied, first will Protection sleeve pipe slowly extracts a part out, hangs up properly above zirconium oxide mounting seat flange 12, special for convenience of probe dismounting The probe dismounting chain sling of setting, holds zirconia probe terminal box 16 and zirconia probe installs small flange 15, overall slowly to take out Go out the utility model device and zirconia probe 18, allow it to cool down in atmosphere.
(2)Untie zirconia probe adpting flange 13 and the utility model Double-face flange 1 again when temperature is reduced to normal temperature Bolt, extract zirconia probe 18 out and checked, overhauled, due to the heat preservation property of protection sleeve pipe, make ceramics of the installation in it Body probe temperature slowly declines, and avoids because quenching but causes porcelain tube to burst damage probe.
Individually operating method during dismounting zirconia probe 18:
(1)First the connecting bolt of failure zirconia probe adpting flange 13 and the utility model Double-face flange 1 can be untied, Its is separated a gap, due to negative pressure in stove, the outer cold air of stove just from zirconia probe adpting flange 13 and Double-face flange 1 it Between gap enter protection sleeve pipe liner sleeve pipe 3 and zirconia ceramics probe between annular section, the air flowed into stove Internal lining pipe 3 and probe ceramic body are cooled down, due to the throttling of the throttling pad 9 in protection sleeve pipe end filter bowl shield 6, The influx of cold air is restricted, and environment temperature in probe is slowly reduced.
(2)3 temperature thermocouples 4 installed by observing on the self-temperature value of zirconia probe 18 and liner sleeve pipe 3 are logical Cross and visited using each silicon carbide value of liner sleeve pipe 3, control obtained from the universal meter with testing temperature function or manual operator detection The speed that head is extracted out, when probe is completely drawn out from throttle orifice, orifice size increases to maximum, the increase of leaked-in air amount, temperature The speed of reduction can also be accelerated.
(3)Failure probe pull down after, due to the inertia of temperature, liner sleeve pipe 3 and space inside temperature it is still very high, it is necessary to Sufficiently cool cooling is carried out, is ready for new probe installation, when the temperature closest to installing port low-temperature space i.e. thirdly reduces To pluggable new zirconia probe 18 at 40~50 DEG C.
The utility model is by from high temperature resistant, the seamless stainless-steel pipe material of easy processing and filling heat-insulated material in being designed to The protection sleeve pipe of the double-decker of material 8 and the structure of filter bowl shield 6 being flexibly connected, have following function:
(1)Make the ceramic body probe in insertion burner hearth internal high temperature region will not be by upper space institute of being popped one's head in burner hearth or blast furnace The foreign matters such as coking block, grey block inadvertently fall off and pound disconnected, have mechanical impact resistance defencive function
(2)In process point stove, furnace shutting down process, the utility model device and zirconia ceramics body of burner hearth high temperature section are inserted Probe, with furnace inner environment equally it is one and is slowly uniformly heated gradually heating or the process for uniformly cooling down and cooling, integrally set Meter already allows for expand with heat and contract with cold Volume Changes situation of each component materials in whole process, and the presence of the present apparatus does not interfere with cigarette The normal measurement of gas oxygen amount.
(3)It is required for overhauling probe during boiler shutdown overhaul, checks, wherein checks that probe measurement hole and filter bowl lead to Permeability, it is the most important maintenance work that must be carried out that purging, which removes dust stratification, to ensure the normal operation of instrument, in boiler operatiopn During, if finding, instrument oxygen amount numerical value change is slow, numerical value is relatively low, it is more likely that is filter bowl or zirconium oxide measured hole by dust stratification Caused by blocking causes flue gas permeability difference, now checked, tieed up with greater need for the utility model protection device and probe are pulled down Shield, no matter any situation, attendant can be by method of operation in operation, using the utility model and zirconia probe 18 as one Individual entirety is pulled down or installed from zirconia probe mounting seat flange 12, and use of the present utility model is equivalent in frangible pottery One layer " armor " has been worn outside porcelain probe " body " to be protected, and has not only avoided unexpected damage of colliding with from popping one's head in but also because of the utility model device With special temperature adjusting function, the probe temperature for making to be arranged in it slowly heats up or dropped with ambient temperature change Temperature, difference variation factor huge inside and outside burner hearth in operating process is overcome, ceramic body, oxonium ion detecting element is not occurred suddenly It is cold and burst, there is " flexibility " safeguard function of resisting temperature cataclysm impact.
(4)When if probe failure or damage need to change installation newly probe during process operation, pass through this Device can accelerate installation rate, and 1.5 hours can complete, and not only increase work efficiency, damage probe be turn avoid, in this reality Set 3 temperature detections to warm galvanic couples 4 with the diverse location of novel protected sleeve pipe, by with the self-temperature of zirconia probe 18 Between be compared to each other and carry out control operation speed, scientific procedures can be realized.
Using present apparatus protection high-temperature oxydation zirconium probe 18, fracture defect never occurs for probe, probe end cleaning, does not send out Measured hole plugging fault was given birth to, total breakdown rate is reduced to 0.8% by original 82%, and mainly filter bowl needs quarterly to purge clearly It is clean once to do periodic maintenance, system use is stopped over, is fully able to the cycle maintenance that realizes a plan, the installation more throw-over of probe Degree will be 1 hour by original 4 hours, and efficiency improves 75%, and protection device meets instrument management and technological requirement, protection and Work efficiency significant effect is improved, has prevented, because of temperature shock damage zirconia ceramics pipe probe, to reduce spare parts purchasing cost, saving takes With, while reduce because frequently zirconia probe 18 is changed in maintenance, cause whole combustion system to put into and automatically control, and it is right The influence of boiler economic operation index, guarantee is provided for corporate security production.
The preferably feasible embodiment of the utility model is the foregoing is only, not thereby limits to power of the present utility model Sharp scope, all equivalence changes made with the utility model specification and its accompanying drawing content, is both contained in of the present utility model Within interest field.

Claims (8)

  1. A kind of 1. probe protection sleeve device of high-temperature oxydation zirconium oxygen amount instrument, it is characterised in that:Including protection sleeve pipe, protective case One end of pipe is provided with plugging plate, and the other end of protection sleeve pipe is provided with Double-face flange, and the main body of protection sleeve pipe is bilayer sleeve Structure, including outer tube and liner sleeve pipe, are filled with heat-barrier material, liner sleeve pipe is away from two-sided between outer tube and liner sleeve pipe Flange one end is set with filter bowl shield by trip bolt, and filter bowl shield is hollow structure, built-in high temperature resistant filter bowl and by tight Gu nut is fixed, shield window is provided with filter bowl shield.
  2. 2. the probe protection sleeve device of high-temperature oxydation zirconium oxygen amount instrument according to claim 1, it is characterised in that:Resistance to height The throttling pad being placed in filter bowl shield is installed between warm filter bowl and liner sleeve pipe.
  3. 3. the probe protection sleeve device of high-temperature oxydation zirconium oxygen amount instrument according to claim 1, it is characterised in that:Liner Temperature thermocouple is provided with the tube wall of sleeve pipe.
  4. 4. the probe protection sleeve device of high-temperature oxydation zirconium oxygen amount instrument according to claim 1, it is characterised in that:Shield Cylindrical, post surface is uniformly provided with three 40 × 140mm shield window, and in 120 ° of distributions.
  5. 5. the probe protection sleeve device of high-temperature oxydation zirconium oxygen amount instrument according to claim 1, it is characterised in that:Protection Sleeve pipe, filter bowl shield are made using high temperature resistant stainless steel alloy 310S materials.
  6. 6. the probe protection sleeve device of high-temperature oxydation zirconium oxygen amount instrument according to claim 1, it is characterised in that:It is heat-insulated Material is silicon dioxide aerogel heat-insulating composite material.
  7. 7. the probe protection sleeve device of high-temperature oxydation zirconium oxygen amount instrument according to claim 1, it is characterised in that:Fastening The centre of nut is provided with circular hole window.
  8. 8. the probe protection sleeve device of high-temperature oxydation zirconium oxygen amount instrument according to claim 1, it is characterised in that:Closure Sleeve-board is welded as a whole on liner sleeve pipe and with outer tube.
CN201720865592.2U 2017-07-17 2017-07-17 The probe protection sleeve device of high-temperature oxydation zirconium oxygen amount instrument Expired - Fee Related CN207007761U (en)

Priority Applications (1)

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CN201720865592.2U CN207007761U (en) 2017-07-17 2017-07-17 The probe protection sleeve device of high-temperature oxydation zirconium oxygen amount instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720865592.2U CN207007761U (en) 2017-07-17 2017-07-17 The probe protection sleeve device of high-temperature oxydation zirconium oxygen amount instrument

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CN207007761U true CN207007761U (en) 2018-02-13

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Family Applications (1)

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CN201720865592.2U Expired - Fee Related CN207007761U (en) 2017-07-17 2017-07-17 The probe protection sleeve device of high-temperature oxydation zirconium oxygen amount instrument

Country Status (1)

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CN (1) CN207007761U (en)

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