CN107192737A - 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 PDFInfo
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- CN107192737A CN107192737A CN201710582560.6A CN201710582560A CN107192737A CN 107192737 A CN107192737 A CN 107192737A CN 201710582560 A CN201710582560 A CN 201710582560A CN 107192737 A CN107192737 A CN 107192737A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
- G01D3/08—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for safeguarding the apparatus, e.g. against abnormal operation, against breakdown
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
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Abstract
The present invention relates 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 are filled with heat-barrier material 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.Present invention, avoiding occur damage, crack conditions during use under the dismounting of ceramic body probe and loading burner hearth hot environment, delayed and damping characteristics with temperature change, probe temperature is avoided to occur cataclysm, so as to solve the fracture of ceramic zirconium oxide probe and dismount slow-paced problem, with the reliable advantage of simple in construction, easy to process, function.
Description
Technical field
The present invention relates to the high-temperature oxydation of the high temperature section flue gas oxygen content instrument for measuring coal-burning boiler or steel-making blast furnace
The protection device of zirconium 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, realizes wind coal（Coke）Ratio
The important measured parameter of control, the accuracy of Oxygen Amount in Flue Gas measurement directly influences 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, optimizes boiler combustion system control
Scheme processed, further improves pot（It is high）Stove operational efficiency, realizes 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 by instrument to be directly used in control and enters boiler（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 optimization low nitrogen burning technological operation, reduce nitrogen oxygen
Compound is generated, and not only produces economic benefit, is also realized and is generated 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, with 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, in essence, and fragility is mainly by Bonding Properties
Determined with crystal structure, in ceramics, the independent sliding system due to lacking, material once is difficult to lead in stress
Cross the plastic deformation caused by 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.
The content of the invention
Present invention seek to address that above mentioned problem, can ensure that the dismounting of ceramic body probe and loads burner hearth high temperature so as to provide one kind
Ceramics probe does not damage, is broken and avoided probe temperature to occur the high-temperature oxydation zirconium oxygen of cataclysm during use under environment
Measure the probe protection sleeve device of instrument.
The present invention 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 are set
There is a 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 overcoat
Pipe and liner sleeve pipe, are filled with heat-barrier material between outer tube and liner sleeve pipe, liner sleeve pipe passes through away from Double-face flange one end
Trip bolt is set with filter bowl shield, and filter bowl shield is hollow structure, and built-in high temperature resistant filter bowl is simultaneously fixed by clamp nut, is filtered
Shield window is provided with cup shield.
Using the present invention of above-mentioned technical proposal, compared with prior art, the characteristics of it is protruded is：
Ensure that ceramics probe is not damaged, is broken during use under the dismounting of ceramic body probe and loading burner hearth hot environment,
The delayed and damping characteristics for the temperature change having, it is to avoid cataclysm occurs for probe temperature, so as to solve ceramic zirconium oxide probe
Slow-paced problem is broken and dismounts, with the reliable advantage of simple in construction, easy to process, function.
Preferably, further technical scheme of the invention 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 structural representation of the embodiment of the present invention；
Fig. 2 is mounting structure schematic diagram of the embodiment of the present invention 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;Tightly
Gu 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;Zirconium oxide is visited
Head terminal box 16;Flange gasket 17;Zirconia probe 18, circular hole window 19, plugging plate 20.
Embodiment：
With reference to embodiment, the invention will be further described, and purpose, which is only that, more fully understands present invention, therefore, institute
The example of act is not intended to limit protection scope of the present invention.
Referring to Fig. 1, Fig. 2, Fig. 3, the probe protection sleeve device of high-temperature oxydation zirconium oxygen amount instrument of the invention includes protection
Sleeve pipe, one end of protection sleeve pipe is provided with plugging plate 20, and the other end of protection sleeve pipe is provided with Double-face flange 1, protection sleeve pipe
Body design 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 it is two-sided
Flange welding, annulus is filled with thermostable heat insulation material 8 between outer tube 2 and liner sleeve pipe 3, and liner sleeve pipe 3 is remote
The probe flue gas measured hole position of the one end of Double-face flange 1 is set with the detachable filter bowl for carrying out clearing up maintenance by trip bolt 5
Shield 6, filter bowl shield 6 is hollow structure and cylindrical, and post surface is uniformly provided with three 40 × 140mm shield window
10, and in 120 ° of distributions, high temperature resistant filter bowl 11 built in filter bowl shield 6 is simultaneously fixed by clamp nut 7, the one end of high temperature resistant filter bowl 11
Closing and another end opening, the inside lining pipe 3 of open end, filtering accuracy is 3 μm, long 150mm, and internal diameter is φ 32mm, filter
Dust of the cup shield 6 in the outside filtering flue gas of the flue gas measured hole of zirconia probe 18, prevents soot dust granule thing from blocking oxidation
Measured hole on zirconium probe 18, big shield window 10 designs the contact expanded as the high temperature resistant filter bowl 11 of filter core with flue gas
Area, ensure that the requirement into the measured hole exhaust gas volumn of zirconia probe 18, and protection sleeve pipe, filter bowl shield 6 use resistance to height
Warm 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, each part such as 6 parts, smoke filtration filter bowl detection room part, heat-insulated room temperature survey
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
Warm area, the liner sleeve pipe 3 of double-decker are located at the middle warm area in stove and the liner sleeve pipe 3 of double-decker 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, the pipe of the invention by outer tube 2
Wall thickness is set to 5mm, and throttling heating room is connected part of wall thickness with liner sleeve pipe 3 and is set to 8mm, it is intended that increase linking pipeline section
Intensity and the heating surface area of pipeline section and thermal capacitance in high temperature environments, enable its heat absorbed to be passed to rapidly by heat transfer
Liner sleeve pipe 3, the wall thickness of liner sleeve pipe 3 is set to 3.5~4mm, from the 310S stainless steels of relatively thin wall thickness while proof strength
Pipe, it is therefore an objective to reduce the thermal capacity of tube wall, can receive and quickly conduct the heat of the outer wall of filter bowl shield 6, and uniform heating is inserted
Enter the ceramic body of zirconia probe 18 in it, in addition, the liner sleeve pipe 3 of relatively thin wall thickness is also beneficial in dismounting zirconia probe 18
, can be with faster speed in the presence of the cold air that the temperature of ceramic body and interior environment can be sucked outside when needing uniform decrease in temperature
Degree is uniform to be declined.
The rising change of the temperature of zirconia ceramics body and the interior environment of surrounding mainly conducts heat reality by liner sleeve pipe 3
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, with the performances such as certain elasticity in one A level heat-insulating heat-preserving materials, 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）, with excellent heat-proof quality, the thickness degree of heat-barrier material 8 of apparatus of the present invention is set to 20mm,
It is to become to ensure to result in the temperature of preferable temperature lag carryover effects, i.e. zirconia ceramics body in device inner space
Change main heated by the heat transfer of liner sleeve pipe 3 and heat up, cooled by controllable cold air influx, prevent cataclysm
The 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, on the other hand adjusts whole oxidation when dismounting zirconia probe 18 by cold air inlet outside control throttling stove
Zirconium is popped one's head in the speed of 18 porcelain tube space temperature rises or temperature drop, due to the hemisphere face shape that the head of zirconia probe 18 is diameter 26mm,
In the range of 0-13mm of the probe head by the throttle orifice for the pad 9 that throttles, position is different, and the cold air for flowing through throttle orifice is different,
Just as the fluid flow that a valve opening difference flows through is different, 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）, pop one's head in and be fully inserted into after throttle orifice
Circulation area is：84.78mm2, circulation area is during insertion half：482.775mm2。
The temperature change in order to preferably control, in monitoring arrangement, further technical measures be protection sleeve pipe most in
Warm area in the high-temperature region at end, middle part, on the outer wall of liner sleeve pipe 3 where the low-temperature space in boiler setting wall bushing 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, it is ensured that 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, grasps the speed that probe is inserted or pull out
Degree, accomplishes science, standard operation.
In order to reduce length of the zirconia probe 18 outside stove, increase probe insertion depth makes 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 concentricity and the influence of high-temperature expansion of the throttling pad 9 with liner sleeve pipe 3, further technology is arranged
Apply is to devise the throttling pad 9 and supporting end construction form of liner sleeve pipe 3, it is considered to respective outer side edges between pad and heated swollen
Swollen, throttling pad 9 external diameter is 39mm, and internal diameter is that the length of fit between 28mm. throttling pads 9 and liner sleeve pipe 3 is 5mm.
The end measured hole permeability of zirconia probe 18 is checked for convenience and the cleaning of the dust stratification of high temperature resistant filter bowl 11 and dimension
Shield, it is ensured that the inside transmission of lining pipe 3 heat, further technical measures are the structure type for devising 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 is fixed in filter bowl shield 6 by clamp nut 7, installation high temperature resistant filter bowl 11 easy to disassemble, fastens spiral shell
Circular hole window 19 in the middle of mother 7 expands the area that high temperature resistant filter bowl 11 filters flue gas, adds the every of the periphery of filter bowl shield 6
120 ° open up a shield window 10 for amounting to three 40 × 140, the filter window gross area is reached 14900mm2, filter bowl shield 6
The length of pipe section mutually held in the mouth with liner sleeve pipe 3 is designed as 52mm, pipeline section wall thickness 8mm, adds the wall thickness 4mm of liner sleeve pipe 3, then the section
Complexed metal thickness is that 12mm. increases metal heat, it is ensured that the mechanical strength under high temperature, is connected pipeline section heating surface area
128011.52 mm2, filter bowl shield 6 other metal part surface areas are added, then the total heating surface of filter bowl shield 6 product 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, in filter
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）In the circular groove for being fixed on the connection end of liner sleeve pipe 3, fastening hexagon socket head cap screw, filter are unclamped
Cup shield 6 can be slided along circular groove, direction and angle to adjust the upper shield window 10 of filter bowl shield 6, and direction is mixed up
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, is then flowed away from shield window 10 above, and oxonium ion therein is acted on zirconium oxide cell
Oxygen concentration potential is produced on battery electrode, electric potential signal is amplified by meter electronics and carries out computing and obtains 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.
Because the plugging plate 20 between the heat-barrier material 8 and internal and external casing of thermal insulation layer draws with the outer wall noncontact of liner sleeve pipe 3
Serve to heat conduct 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）Connection cable between zirconia probe 18 to be mounted and live oxygen content transducer is connected, power transmission makes instrument pre-
The probe end temperature shown on heat, observation transmitter indicates situation of change, puts flange gasket 17 well, is ready to install.
（2）It should make the probe installing port on probe protection sleeve device Double-face flange 1 of the present invention open before installation, utilize stove
Interior negative pressure, allows the outer internal lining pipe 3 of cold air of stove and the sufficiently cool cooling of filter bowl shield 6, by observing thermometric on liner sleeve pipe 3
The temperature of thermocouple 4 grasps the set-up time, can be installed when low-temperature space temperature temperature close to outside stove.
（3）Hang up properly chain sling that zirconium oxide installs and uses 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 observing 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 that further reduction is injected, 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 to be fully heated, temperature rise,
When the outer ceramic body length of stove is 100mm or so, 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, 3 temperature of observation and probe end temperature in later 15mm distance ranges, by adjustment now
Probe flows into the amount of cold air in the position of throttle orifice, control, grasps probe different parts temperature rising condition.
（5）The head of zirconia probe 18 enters after throttle orifice, and 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 the end to liner pipe cooling stage, quick heating up process
Start, 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 is transmitted, and own temperature gradually rises, by the uniform heated oxide zircon ceramic body of heat radiation.
（6）By two M18 × 1.5, length penetrates zirconium oxide mounting seat flange 12 for 150mm bolt, 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 use identical spiral shell
Bolt changes the stay bolt used when guide rail, uniform fixed.
（7）Transmitter displays temperature and oxygen amount situation of change are observed, operation is demarcated after 24 hours.
The operating method for dismantling protection sleeve pipe device of the present invention 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 positioned at the top of zirconium oxide mounting seat flange 12, is specially set for convenience of probe dismounting
Probe dismounting chain sling, hold zirconia probe terminal box 16 and zirconia probe install small flange 15, it is overall slowly to extract this out
Invention device and zirconia probe 18, allow it to cool down in atmosphere.
（2）Untie the spiral shell of zirconia probe adpting flange 13 and Double-face flange 1 of the present invention again when temperature is reduced to normal temperature
Bolt, extracts zirconia probe 18 out and is checked, overhauled, due to the heat preservation property of protection sleeve pipe, makes ceramic body spy of the installation in it
Head temperature slowly declines, it is to avoid because quenching but causes porcelain tube to burst damage probe.
Individually dismantle operating method during zirconia probe 18：
（1）First the connecting bolt of failure zirconia probe adpting flange 13 and Double-face flange 1 of the present invention can be untied, separate it
One gap, due to negative pressure in stove, the outer gap of cold air just between zirconia probe adpting flange 13 and Double-face flange 1 of stove
Annular section between liner sleeve pipe 3 and the zirconia ceramics probe of protection sleeve pipe, the air flowed into stove is to neck bush
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, cold air
Influx 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 lead to
Cross using each silicon carbide value of liner sleeve pipe 3 obtained from the universal meter with testing temperature function or manual operator detection, control is visited
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 that new probe installation is ready, when being that temperature thirdly is reduced closest to installing port low-temperature space
To pluggable new zirconia probe 18 at 40~50 DEG C.
The present invention fills heat-barrier material 8 by selection high temperature resistant, the seamless stainless-steel pipe material of easy processing and in being designed to
Double-decker protection sleeve pipe and be flexibly connected the structure of filter bowl shield 6, with following function：
（1）Make the ceramic body probe in insertion burner hearth internal high temperature region will not be by upper space institute coking of being popped one's head in burner hearth or blast furnace
The foreign matters such as block, grey block inadvertently fall off and pound disconnected, with mechanical impact resistance defencive function
（2）In process point stove, furnace shutting down process, apparatus of the present invention and zirconia ceramics body probe of burner hearth high temperature section are inserted, together
Furnace inner environment is equally a process for slowly uniformly being heated gradually heating or uniform cool down and being cooled, and global design has been examined
Consider expand with heat and contract with cold Volume Changes situation of each component materials in whole process, the presence of the present apparatus does not interfere with Oxygen Amount in Flue Gas
Normal measurement.
（3）It is required for overhauling probe during boiler shutdown overhaul, checks, wherein checks that probe measurement hole and filter bowl are logical
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 be filter bowl or zirconium oxide measured hole by dust stratification
Blocking is caused caused by flue gas permeability difference, is now checked, safeguarded, nothing with greater need for protection device of the present invention and probe are pulled down
By any situation, attendant all can by method of operation in operation, using the present invention and zirconia probe 18 as an entirety from
Pull down or install on zirconia probe mounting seat flange 12, use of the invention is equivalent in frangible ceramics probe " body "
One layer " armor " is worn outside to be protected, has not only avoided unexpected damage of colliding with from popping one's head in but also because there is apparatus of the present invention special temperature to adjust
Function is controlled, the probe temperature being arranged in it is slowly heated up or is cooled with ambient temperature change, overcomes and operated
Difference variation factor huge inside and outside burner hearth in journey, makes ceramic body, oxonium ion detecting element not occur to be quenched and burst, with anti-
" flexibility " safeguard function of temperature shock impact.
（4）If when probe during process operation breaks down or damaged needs replacing and installs new probe, by originally
Device can accelerate installation rate, and 1.5 hours can complete, and not only increase work efficiency, damage probe be turn avoid, in this hair
The diverse location of bright protection sleeve pipe sets 3 temperature detections to warm galvanic couple 4, by between the self-temperature of zirconia probe 18
It is compared to each other and carrys 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, and probe end cleaning is not sent 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
Clean once to do periodic maintenance, the system that stops over is used, and is fully able to realize a plan cycle maintenance, 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
Improve work efficiency effect significantly, prevented, because temperature shock damages zirconia ceramics pipe probe, to reduce spare parts purchasing cost, saving takes
With, while reducing 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.
Preferable feasible embodiment of the invention is the foregoing is only, not thereby limits to the interest field of the present invention,
Within the equivalence changes that all utilization description of the invention and its accompanying drawing content are made, the interest field for being both contained in the present invention.
Claims (8)
1. a kind of 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. 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. 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. 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. 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. 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. 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. 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710582560.6A CN107192737A (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 |
|---|---|---|---|
| CN201710582560.6A CN107192737A (en) | 2017-07-17 | 2017-07-17 | The probe protection sleeve device of high-temperature oxydation zirconium oxygen amount instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107192737A true CN107192737A (en) | 2017-09-22 |
Family
ID=59883142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710582560.6A Withdrawn CN107192737A (en) | 2017-07-17 | 2017-07-17 | The probe protection sleeve device of high-temperature oxydation zirconium oxygen amount instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107192737A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848739A (en) * | 2019-10-16 | 2020-02-28 | 华电电力科学研究院有限公司 | Intelligent purging anti-blocking system and method for zirconia oxygen content measuring probe |
| CN112945320A (en) * | 2021-03-12 | 2021-06-11 | 苏州西热节能环保技术有限公司 | Portable hot air volume measuring device capable of being quickly disassembled and connected |
-
2017
- 2017-07-17 CN CN201710582560.6A patent/CN107192737A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848739A (en) * | 2019-10-16 | 2020-02-28 | 华电电力科学研究院有限公司 | Intelligent purging anti-blocking system and method for zirconia oxygen content measuring probe |
| CN112945320A (en) * | 2021-03-12 | 2021-06-11 | 苏州西热节能环保技术有限公司 | Portable hot air volume measuring device capable of being quickly disassembled and connected |
| CN112945320B (en) * | 2021-03-12 | 2024-05-28 | 苏州西热节能环保技术有限公司 | Portable hot air measuring device capable of being quickly detached |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170922 |
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| WW01 | Invention patent application withdrawn after publication |