CN106282462B - A kind of blast furnace sealed cooling system concentrates leakage detection apparatus and method - Google Patents
A kind of blast furnace sealed cooling system concentrates leakage detection apparatus and method Download PDFInfo
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Abstract
A kind of blast furnace sealed cooling system concentrates leakage detection apparatus and method, the blast furnace sealed cooling system to be circumferentially with several cooler bye-pass water strings along blast furnace；Several cooler bye-pass water strings are divided into several subregions along blast furnace circumference, and each subregion includes several cooler bye-pass water strings, and each subregion is one and concentrates the area that hunts leak；Cooler bye-pass water string in each subregion connects a connection flexible pipe by a triple valve respectively, and a connecting branch is connected by quick coupling, each connecting branch is connected to a connection manifold, and the outlet ends connection manifold connect the drainpipe of rhone, a drain valve is set in drainpipe；A pressure gauge is set on the pipeline of the outlet ends connection manifold and degassing packet is connected by connecting tube, and degassing packet sets exhaust pipe and air bleeding valve, and upper part sets overflow pipe and overflow valve, and outlet end is connected to drainpipe；Degassing packet sets inlet valve.The present invention can quickly, efficiently, accurately detect the damaged leakage point of the cooler of blast furnace sealed cooling system.
Description
Technical field
The present invention relates to blast-furnace technique, more particularly to a kind of blast furnace sealed cooling system concentrates leakage detection apparatus and method.
Background technology
Blast furnace is the closed reactor of a high temperature and pressure, to extend its service life, is covered in each section of blast furnace
Cooling device is expressed and is cooled down and formed effective slag crust to the resistance to material of blast furnace to protect washing away for furnace charge, air-flow and slag iron.
The carrier that cooling device heat is taken out of has selected cooling water, easily leads to cooling equipment scaling loss once leakage occurs and is let out into blast furnace
A large amount of water is leaked, the production run of blast furnace, the generation for possibly even leading to stove cool accident of especially severe have been seriously affected.So
It is the key that blast-furnace body cooling plant maintenance that fast and stable, which efficiently accurately cools down equipment breakage leak detection, is to ensure that blast furnace safety
The important link of production and furnace body longevity.
All it is leak detection from technological layer though leak hunting method used by blast furnace sealed cooling system is more at present
The single clumsiness of technical functionality, the functional effect less stable in practical operation Technology application is firm, is easy to happen missing inspection or erroneous judgement
Problem, so that the precision of cooling equipment leak detection is also just had a greatly reduced quality.Therefore the speed for also resulting in leak detection operation becomes
Slowly, time-consuming, and is to cause the labor intensity of bigger, excessively under the working environment of furnace body region high temperature, coal gas and dust
The physical efficiency of operating personnel is consumed, so but also the degradation of leak detection operation, efficiency are lower.Since a kind of safety of shortage can
By stable leak hunting technology means, and then greatly reduce whole working efficiency.
In addition, what is discussed in the prior art is all leak detection function method of the blast furnace under production status, and exist for blast furnace
The leak detection of Status of hugh wind but lacks means, this is also the incomplete effective performance of leak hunting technology function.
Complete leak hunting technology is no matter blast furnace cooling equipment is in which kind of working condition, and damaged leak source size journey
Degree and the different different situations of point equal difference, it should reliable in time can accurately and efficiently detect the content broken for judging cooling equipment
Leakage, and there is no the specious uncertain problems such as missing inspection, erroneous judgement.
Through retrieval, the patent application of four blast furnace cooling systems leak detection, but the work(of the method and apparatus of its leak detection are retrieved
Can be single, and precision is not high in actual mechanical process, efficiency is low, labor intensity is big, do not solve still presently, there are the problem of.
It is specific as follows：
A kind of Chinese patent CN201210272202.2 " leak detections and disposition for blast furnace soft water closed circulation cooling system
The judgement of its part of hunting leak of method "：1) the expansion drum liquid level for tracking soft water system, judges whether that cooling wall is deposited according to moisturizing frequency
In breakage；2) it detects coal gas in the expansion drum or degassing tank of soft water system, shows that the soft water pressure of upper shaft is less than shaft
Gas pressure in upper furnace；3) turnover panel flowmeter monitors in real time, when the flow in turnover panel flowmeter has bubble or gonorrhoea, shows
Longitudinally the cooling wall comprising this cooling water pipeline has breakage to cooling wall；4) soft water examines pH to reduce, and it is broken to show that cooling wall has
Damage；5) observation shell of blast furnace eye slab have water mark, saltcake exudate, that is, determine enter stove in water taken out of by coal gas, carry secretly
The intracutaneous grouting material of stove, i.e., in stove skin leakage coal gas point exudation water mark, saltcake, shows that cooling wall has breakage.
The patent has no corresponding leakage detection apparatus, and method is complex, wherein has water by observing all stove skin eye slabs
The methods of the judgement that turnover panel flowmeter on the exudate of mark, saltcake, and the whole circle water string of observation circumference one carries out, it is sheerly live
The wise remark of an experienced person, only with water mark, saltcake or water flow inside bubble phenomena such as, cannot with regard to this proof must be cooling wall string pipeline have
Breakage, for example when the region water temperature is heated significantly raised, bubble can also continuously emerge in flow, cannot conclude it is coal with regard to this
Gas, theoretical foundation is insufficient, so the precision hunted leak when longitudinally disposing is not high, it is difficult to promptly and accurately find the broken of cooling equipment
Damage leakage, leak detection efficiency is low, easy tos produce missing inspection and erroneous judgement problem, and its job step of hunting leak is cumbersome, so carries out leak detection work
The labor intensity of industry is too big, takes and also grows.
As disclosed in Chinese patent CN200910227770.9 " a kind of leak hunting method of blast furnace cooling system ", it is true first
Recognize leak cooling tube, a transparent pipe is connected with the air bleeding valve of middle part one-step cooling pipe, then by the middle part one-step cooling pipe
The communicating valve of lower part is closed；The backwater valve of the leak cooling tube is closed later, the highest one-step cooling of the leak cooling tube
The air bleeding valve of pipe is opened；The pipe end of the transparent pipe is then increased to the exhaust of the highest one-step cooling pipe of the leak cooling tube
The position of valve, and the air bleeding valve being connect with transparent pipe is opened, so that the water in the leak cooling tube is freely declined, and and transparent pipe
The water level of instruction keeps synchronizing, and then confirms the position of leak；If water level declines always, until transparent pipe and air bleeding valve junction
The sign of stopping is had not yet to see, the position that transparent pipe connects can be moved down, and repeats the above method and continues to observe, until water level stops
The position of leak can be confirmed until decline.The patent is and the positive needle of present invention under the premise of confirmed the cooling tube of leak
To how efficiently accurately to confirm the cooling equipment cooling tube of all damaged leaks.
As disclosed in Chinese patent CN03232568 " leakage detector for coolnig-equipment of blast furnace ", including inlet part and outlet portion
Point, inlet part includes short tube, ball valve, reducer pipe, quick coupling, is sequentially connected, and lock pressing plate is equipped in quick coupling,
The quick coupling of inlet part one end is connected at the inlet union of Devices to test, and the short tube of the other end connects pressure source；Outlet
Part includes short tube, ball valve, threeway, reducer pipe and quick coupling, is sequentially connected, is additionally provided with a pressure gauge, pressure gauge passes through three
Logical and piping connection, is equipped with lock pressing plate, the quick coupling of exit portion one end is connected to Devices to test in quick coupling
Outlet connection at.The leak detector adapts to different caliber interfaces, and when detection need not remove the body part of Devices to test, drop
Low labor intensity, easy to detect easy, detection speed is fast, and the leak detector is easy to connect, does not need when detecting
It stops production, cut off the water, ensure that the continuity of blast fumance.The patent only relies on pressure gauge to detect, and method is single, and precision is not high,
And can only be carried out by root water pipe when detecting, efficiency is low.
" leak detector for blast furnace cooling water " disclosed in Chinese patent CN93247830.1, by combined probe and signal processor
Composition.Combined probe is mainly made of threeway assembly parts, straight tube, seal member, metal sleeve and temperature sensor, signal processing
The signal that device is used to pick up combined probe is handled, and has display and warning function.This leakage detection apparatus can be surveyed accurately
Determine temperature conductivity and the water body leakage of blast-furnace soft water closed circulation cooling system and blast furnace industry water open circuit cooling system water body
Situation.The patent, which only relies on, measures the variation of conductivity to determine whether leak, the leak tended to occur in blast furnace be into stove
Leakage, the conductivity of cooling water does not change at this time, which can not confirm.
Invention content
The purpose of the present invention is to provide a kind of blast furnace sealed cooling systems to concentrate leakage detection apparatus and method, can be quick, high
Effect, accurately detect blast furnace sealed cooling system cooler damaged leakage point, improve precision of detecting leak gas, improve leak detection effect
Rate shortens the leak detection time, and then reduces labor intensity, and solid foundation guarantee is provided for the safety and stability production run of blast furnace.
In order to achieve the above objectives, the technical scheme is that：
A kind of blast furnace sealed cooling system concentration leakage detection apparatus, if the blast furnace sealed cooling system is circumferentially with along blast furnace
Dry cooler bye-pass water string, which is characterized in that several cooler bye-pass water strings are divided into several along blast furnace circumference
A subregion, each subregion include several cooler bye-pass water strings, and each subregion is one and concentrates the area that hunts leak；In each subregion
Cooler bye-pass water string a connection flexible pipe is connected by triple valve respectively, which is connected by quick coupling
One connecting branch, each connecting branch are connected to a connection manifold, and the outlet ends connection manifold connect the drainpipe of rhone,
One drain valve is set in drainpipe；A pressure gauge is set on the pipeline of the outlet ends connection manifold and by one degassing of connecting tube connection
Packet, degassing packet top set exhaust pipe and air bleeding valve, and the degassing portion of wrapping sets overflow pipe and overflow valve, and finder outlet end is connected to
In drainpipe pipeline under drain valve；Degassing packet sets inlet valve.
Further, several cooler bye-pass water strings are divided into 16 subregions along blast furnace circumference, and each subregion includes 10
~15 cooler bye-pass water strings.
Preferably, the degassing packet is pot type degassing packet.
The blast furnace sealed cooling system of the present invention concentrates the leak hunting method of leakage detection apparatus, is panted using intuitive drainpipe gonorrhoea
Methods of printing, including：
1) leakage detection apparatus valve state：Deaerate packet exhaust valve closure, and degassing packet inlet valve is closed, and degassing packet overflow valve closes
It closes, drain valve is opened；
2) the number string cooler water string water inlet valve opening for turning down a wherein subregion, turns down the water and water for controlling the subregion
Pressure, the hydraulic pressure in the areas Shi Gai cooler water string pipeline are all significantly lower than furnace pressure, then by the three of the cooler water string of the subregion
Port valve is switched to open circuit hull-borne, once the cooler water string pipeline of the subregion has damaged leakage in this way, must there is coal in stove
Gas enters from damaged leakage point anti-channeling in water string pipeline, to be carried over drainpipe, will can be visually seen drainpipe at this time and exist in vain
Turbid breathing phenomenon, this is the intermediate reason being constantly discharged entrainment of blast furnace gas bubble；
3) the drainage situation for observing single drainpipe on the subregion leakage detection apparatus shows this if there is gonorrhoea breathing phenomenon
There must be certain a string in all cooler water string pipelines of subregion or the damaged leakage more than a string or more；
4) exclusive method is used, the cooler number string water string pipeline under the subregion open-circuit condition be restored to by string switching
Former closed circuit state can be completed by switching three-way valve；While restoring by string, whether observation drainpipe gonorrhoea breathing phenomenon
It eliminates；By in string recovery process, if drainpipe does not change, continue, if finding to eliminate, illustrates one just switched
String cooler water string pipeline has damaged leakage, further carries out coal gas ignition inspection to the string drainpipe, lights a fire, and determines broken
Damage.
Also, blast furnace sealed cooling system of the present invention concentrates the leak hunting method of leakage detection apparatus, inspection is collected using degassing packet coal gas
Survey method, including：
1) leakage detection apparatus valve state：The packet inlet valve that deaerates is opened, and overflow valve is opened, exhaust valve closure, the row of drainpipe
Water valve is closed, and makes the draining of each cooler water string pipeline of each subregion all by being discharged after the packet that deaerates；
2) the number string cooler water string water inlet valve opening for turning down a wherein subregion, turns down the water and water for controlling the subregion
It presses, the hydraulic pressure in the areas Shi Gai cooler water string pipeline is all significantly lower than furnace pressure, then the cooler water string of the subregion is discharged
Triple valve is switched to open circuit hull-borne；At this time the subregion number string cooler water string pipelines draining all from degassing packet stream after
Discharge necessarily has coal gas from the water body for flowing through degassing packet if the cooler water string pipeline in the subregion has damaged leakage
The coal gas of middle separation effusion, effusion constantly assembles at the top for rising to degassing packet；
3) degassing packet air bleeding valve is opened, degassing packet exhaust pipe mouth is directed at coal gas detector, carries out coal gas detection, measure coal
Gas, illustrates to have a string or a string or more in the number string cooler water string pipeline of the subregion and there is damaged leakage；It can also use
The method that exhaust pipe port carries out coal gas ignition is wrapped in degassing, lights a fire, equally also illustrates to have a string or a string or more exist
Breakage leakage；
4) exclusive method is still used, the cooler number string water string pipeline under the subregion open-circuit condition be restored to by string switching
Former closed circuit state can be completed by switching three-way valve, and while restoring by string, whether detecting and tracking exhaust pipe mouth coal gas changes
It disappears；By in string recovery process, do not change if measuring coal gas, continue, if measuring coal gas variation hour, illustrates
A string just switched have damaged leakage；Coal gas detection further is carried out to the string drainpipe or igniting checks, measures coal gas or point
Fire, then judge that the string pipeline breakage leaks.
Further more, the blast furnace sealed cooling system of the present invention concentrates the leak hunting method of leakage detection apparatus, detected using water string pressurize
Method, including：
1) leakage detection apparatus valve state：The packet inlet valve that deaerates is closed, and overflow valve is closed, exhaust valve closure, and drain valve is closed；
2) the cooler water string inlet valve for closing a wherein subregion, by the cooler water string outlet three way Vavle switching of the subregion
To open circuit hull-borne, pressurize test is carried out to each pipeline of cooler water string；
3) pressure gauge packing state is observed, denumerable string cooler water string is carried out at the same time, and normal cooler water string pipeline is protected
Hold that pressure is constant, if having it is damaged leak will necessarily pressure release variation, with this come judge the subregion cooler water string pipeline whether
Breakage leakage；It is finished by string leak detection, accordingly restores each string to the former closed cycle state of cooling.
Further, the water string pressurize detection method is suitable under production neutralization Status of hugh wind.
Beneficial effects of the present invention：
The present invention efficiently solves the problems, such as that the leak detection of blast furnace sealed cooling system is slow-footed, it is cold circumference substantial amounts
But leak detection is reduced to the concentration leak detection of several subregions to device branch pipe water string (general big blast furnace is all in 200 string left and right) one by one, changes numerous
For letter, to significantly reduce leak detection operation frequency, improve leak detection speed.Leak detection efficiency is improved, the leak detection time is shortened, has
Conducive to the operating rate of raising blast furnace.
The present invention efficiently solves the problems, such as that the leak detection of blast furnace sealed cooling system is difficult, and no matter cooler water string breakage leaks
How is size degree, and especially Small leak is difficult to find, and can be transferred through three and leak hunting methods is concentrated to be effectively detected out, fill
Divide the advantages of embodying accurate leak detection.
The present invention shortens the leak detection time, greatly reduces labor intensity, and then improve by precisely quickly leak detection
The operating efficiency of quick leak-checking.
The present invention has concentrated three kinds of methods to be integrated and has been detected, and testing result can be mutually authenticated, so to cooling
The detection of device water string breakage leakage judges more rationally more scientific.
The present invention can control by precisely quickly leak detection and solve cooler a large amount of leaks for a long time to State of Blast Furnace in time
The influence of the safe direct motion of condition, avoids blast furnace temperature from deteriorating, and fuel specific consumption rises, or even the hair of the serious accidents such as stove cool occurs
It is raw.
The present invention under any work condition state of blast furnace, can reasonable utilization, it is general with sealed cooling system leak hunting technology
All over applicability.
Description of the drawings
Fig. 1 is the structural schematic diagram of (subregion) of the embodiment of the present invention.
Specific implementation mode
Referring to Fig. 1, blast furnace sealed cooling system of the invention concentrates leakage detection apparatus, and the blast furnace sealed cooling system is along high
Stove is circumferentially with several cooler bye-pass water strings 1, if several cooler bye-pass water strings are divided into along blast furnace circumference
Dry subregion 10, each subregion 10 include 10~15 cooler bye-pass water strings 1 and corresponding water supply endless tube 30, return water endless tube
40 and return water collector and coal gas trap 50, each subregion 10 be one and concentrate the area that hunts leak；Cooler branch in each subregion 10
Pipeline water string 1 connects a connection flexible pipe 3 by a triple valve 2 respectively, which is connected by the connection of quick coupling 4 one
Branch pipe 5 is connect, each connecting branch 5 is connected to a connection manifold 6, and 6 outlet ends connection manifold connect the draining of rhone 20
A drain valve F1 is arranged in drainpipe 7 in pipe 7；A pressure gauge 8 is set on the 6 outlet end pipelines of connection manifold and passes through connecting tube
One degassing packet 9 of connection, 9 top of degassing packet set exhaust pipe 91 and air bleeding valve F2, and 9 tops of degassing packet set overflow pipe 92 and overflow valve
F3,92 outlet end of overflow pipe are connected in the drainpipe pipeline under drain valve F1；Degassing packet 9 sets inlet valve F4.
In the present embodiment, all cooler bye-pass water strings of the non-subregion of blast furnace sealed cooling system are subjected to circumference point
Area is generally rationally divided into 16 subregions (the general big each subregion of blast furnace is responsible for 10~15 strings), makes each road cooler of blast furnace circumference
Water string branch pipe is correspondingly evenly distributed to by 16 distribution arrangements of circumference in this 16 identical concentration leakage detection apparatus.Thus
The cooler branch pipe water string (general big blast furnace is all in 200 strings) of circumference substantial amounts, leak detection is reduced to the collection of 16 subregions one by one
Middle leak detection shortens the leak detection time, greatly reduces labor intensity, and then improve to significantly reduce leak detection operation frequency
The operating efficiency of quick leak-checking.
Preferably, the degassing packet is pot type degassing packet.
The blast furnace sealed cooling system of the present invention concentrates the leak hunting method of leakage detection apparatus, is panted using intuitive drainpipe gonorrhoea
Methods of printing, including：
1) leakage detection apparatus valve state：Deaerate packet exhaust valve closure, and degassing packet inlet valve closes 8 and closes, and degassing packet overflow valve closes
It closes, drain valve is opened；
2) the number string cooler water string water inlet valve opening for turning down a wherein subregion, turns down the water and water for controlling the subregion
Pressure, the hydraulic pressure in the areas Shi Gai cooler water string pipeline are all significantly lower than furnace pressure, then by the three of the cooler water string of the subregion
Port valve is switched to open circuit hull-borne, once the cooler water string pipeline of the subregion has damaged leakage in this way, must there is coal in stove
Gas enters from damaged leakage point anti-channeling in water string pipeline, to be carried over drainpipe, will can be visually seen drainpipe at this time and exist in vain
Turbid breathing phenomenon, this is the intermediate reason being constantly discharged entrainment of blast furnace gas bubble；
3) the drainage situation for observing single drainpipe on the subregion leakage detection apparatus shows this if there is gonorrhoea breathing phenomenon
There must be certain a string in all cooler water string pipelines of subregion or the damaged leakage more than a string or more；
4) exclusive method is used, the cooler number string water string pipeline under the subregion open-circuit condition be restored to by string switching
Former closed circuit state can be completed by switching three-way valve；While restoring by string, whether observation drainpipe gonorrhoea breathing phenomenon
It eliminates；By in string recovery process, if drainpipe does not change, continue, if finding to eliminate, illustrates one just switched
String cooler water string pipeline has damaged leakage, further carries out coal gas ignition inspection to the string drainpipe, lights a fire, and determines broken
Damage.
Also, blast furnace sealed cooling system of the present invention concentrates the leak hunting method of leakage detection apparatus, inspection is collected using degassing packet coal gas
Survey method, including：
1) leakage detection apparatus valve state：The packet inlet valve that deaerates is opened, and overflow valve is opened, exhaust valve closure, the row of drainpipe
Water valve is closed, and makes the draining of each cooler water string pipeline of each subregion all by being discharged after the packet that deaerates；
2) the number string cooler water string water inlet valve opening for turning down a wherein subregion, turns down the water and water for controlling the subregion
It presses, the hydraulic pressure in the areas Shi Gai cooler water string pipeline is all significantly lower than furnace pressure, then the cooler water string of the subregion is discharged
Triple valve is switched to open circuit hull-borne；At this time the subregion number string cooler water string pipelines draining all from degassing packet stream after
Discharge necessarily has coal gas from the water body for flowing through degassing packet if the cooler water string pipeline in the subregion has damaged leakage
The coal gas of middle separation effusion, effusion constantly assembles at the top for rising to degassing packet；
3) degassing packet air bleeding valve is opened, degassing packet exhaust pipe mouth is directed at coal gas detector, carries out coal gas detection, measure coal
Gas, illustrates to have a string or a string or more in the number string cooler water string pipeline of the subregion and there is damaged leakage；It can also use
The method that exhaust pipe port carries out coal gas ignition is wrapped in degassing, lights a fire, equally also illustrates to have a string or a string or more exist
Breakage leakage；
Exclusive method is still used, the cooler number string water string pipeline under the subregion open-circuit condition is carried out to be restored to original by string switching
Closed circuit state can be completed by switching three-way valve, and while restoring by string, whether detecting and tracking exhaust pipe mouth coal gas, which changes, disappears
It loses；By in string recovery process, do not change if measuring coal gas, continue, if measuring coal gas variation hour, illustrates just
A string of switching have damaged leakage；Coal gas detection further is carried out to the string drainpipe or igniting checks, measures coal gas or igniting
It, then judges that the string pipeline breakage leaks.
Further more, the blast furnace sealed cooling system of the present invention concentrates the leak hunting method of leakage detection apparatus, detected using water string pressurize
Method, including：
A) leakage detection apparatus valve state：The packet inlet valve that deaerates is closed, and overflow valve is closed, exhaust valve closure, and drain valve is closed；
B) the cooler water string inlet valve for closing a wherein subregion, by the cooler water string outlet three way Vavle switching of the subregion
To open circuit hull-borne, pressurize test is carried out to each pipeline of cooler water string；
C) pressure gauge packing state is observed, denumerable string cooler water string is carried out at the same time, and normal cooler water string pipeline is protected
Hold that pressure is constant, if having it is damaged leak will necessarily pressure release variation, with this come judge the subregion cooler water string pipeline whether
Breakage leakage；It is finished by string leak detection, accordingly restores each string to the former closed cycle state of cooling.
Further, the water string pressurize detection method is suitable under production neutralization Status of hugh wind.
Claims (7)
1. a kind of blast furnace sealed cooling system concentrates leakage detection apparatus, the blast furnace sealed cooling system is circumferentially with several along blast furnace
Cooler bye-pass water string, which is characterized in that
Several cooler bye-pass water strings are divided into several subregions along blast furnace circumference, and each subregion includes that several are cold
But device bye-pass water string, each subregion are one and concentrate the area that hunts leak；
Each cooler bye-pass water string in each subregion connects a connection flexible pipe by a triple valve respectively, and the connection is soft
Pipe connects a connecting branch by quick coupling, and each connecting branch is connected to a connection manifold, the connection of the outlet ends connection manifold
A drain valve is arranged in drainpipe in the drainpipe of communicated drainage slot；Set on the pipeline of the outlet ends connection manifold a pressure gauge and
By one degassing packet of connecting tube connection, exhaust pipe and air bleeding valve are set at the top of the degassing packet, the degassing portion of wrapping sets overflow pipe and overflow
Valve, finder outlet end are connected in the drainpipe pipeline under drain valve；Degassing packet sets inlet valve.
2. blast furnace sealed cooling system as described in claim 1 concentrates leakage detection apparatus, which is characterized in that several coolers
Bye-pass water string is divided into 16 subregions along blast furnace circumference, and each subregion includes 10~15 cooler bye-pass water strings.
3. blast furnace sealed cooling system as described in claim 1 concentrates leakage detection apparatus, which is characterized in that the degassing packet is pot
Type degassing packet.
4. blast furnace sealed cooling system as described in claim 1 concentrates the leak hunting method of leakage detection apparatus, characterized in that using straight
Drainpipe gonorrhoea is seen to pant methods of printing, including：
1) leakage detection apparatus valve state：Deaerate packet exhaust valve closure, and degassing packet inlet valve is closed, and degassing packet overflow valve is closed, row
Water valve is opened；
2) the water inlet valve opening for turning down the number string cooler water statements based on collusion water ring pipe of a wherein subregion, turns down the water for controlling the subregion
And hydraulic pressure, so that hydraulic pressure in the subregion cooler water string pipeline is all significantly lower than furnace pressure, then by the cooler water of the subregion
The triple valve of string is switched to open circuit hull-borne, once the cooler water string pipeline of the subregion has damaged leakage in this way, must have
Coal gas enters from damaged leakage point anti-channeling in water string pipeline in stove, to be carried over drainpipe, will can be visually seen drainpipe at this time
There are gonorrhoea breathing phenomenons, this is the intermediate reason being constantly discharged entrainment of blast furnace gas bubble；
3) drainage situation of single drainpipe on the subregion leakage detection apparatus is observed, if there is gonorrhoea breathing phenomenon, that is, shows the subregion
All cooler water string pipelines in must have certain a string or the damaged leakage more than a string or more；
4) exclusive method is used, being restored to original by string switching to the cooler number string water string pipeline progress under the subregion open-circuit condition closes
Line state can be completed by switching three-way valve；While restoring by string, whether observation drainpipe gonorrhoea breathing phenomenon disappears
It removes；By in string recovery process, if drainpipe does not change, continue, if finding to eliminate, illustrates a string just switched
Cooler water string pipeline has damaged leakage, further carries out coal gas ignition inspection to the string drainpipe, lights a fire, and determines damaged.
5. blast furnace sealed cooling system as described in claim 1 concentrates the leak hunting method of leakage detection apparatus, characterized in that using de-
Gas bag coal gas collects detection method, including：
1) leakage detection apparatus valve state：The packet inlet valve that deaerates is opened, and overflow valve is opened, exhaust valve closure, the drain valve of drainpipe
It closes, makes the draining of each cooler water string pipeline of each subregion all by being discharged after the packet that deaerates；
2) the number string cooler water string water inlet valve opening for turning down a wherein subregion, turns down the water and hydraulic pressure for controlling the subregion, makes
Hydraulic pressure in the subregion cooler water string pipeline is all significantly lower than furnace pressure, then by the cooler water string outlet three way of the subregion
Vavle switching to open circuit hull-borne；At this time the subregion number string cooler water string pipelines draining all from degassing packet stream after arrange
Go out, if the cooler water string pipeline in the subregion has damaged leakage, necessarily has coal gas from the water body for flowing through degassing packet
The coal gas of separation effusion, effusion constantly assembles at the top for rising to degassing packet；
3) degassing packet air bleeding valve is opened, degassing packet exhaust pipe mouth is directed at coal gas detector, carries out coal gas detection, measure coal gas,
Illustrate to have a string or a string or more in the number string cooler water string pipeline of the subregion and there is damaged leakage；It can also use de-
Gas bag is vented the method that pipe port carries out coal gas ignition, lights a fire, and equally also explanation must have a string or a string or more and there is breakage
Leakage；
4) exclusive method is still used, being restored to original by string switching to the cooler number string water string pipeline progress under the subregion open-circuit condition closes
Line state can be completed by switching three-way valve, and while restoring by string, whether detecting and tracking exhaust pipe mouth coal gas, which changes, disappears
It loses；By in string recovery process, do not change if measuring coal gas, continue, if measuring coal gas variation hour, illustrates just
A string of switching have damaged leakage；Coal gas detection further is carried out to the string drainpipe or igniting checks, measures coal gas or igniting
It, then judges that the string pipeline breakage leaks.
6. blast furnace sealed cooling system as described in claim 1 concentrates the leak hunting method of leakage detection apparatus, characterized in that use water
String pressurize detection method, including：
1) leakage detection apparatus valve state：The packet inlet valve that deaerates is closed, and overflow valve is closed, exhaust valve closure, and drain valve is closed；
2) the cooler water string inlet valve for closing a wherein subregion, by the cooler water string outlet three way Vavle switching of the subregion to opening
Road hull-borne carries out pressurize test to each pipeline of cooler water string；
3) pressure gauge packing state is observed, denumerable string cooler water string is carried out at the same time, and normal cooler water string pipeline keeps pressure
Power is constant, if having it is damaged leak will necessarily pressure release variation, judge whether the cooler water string pipeline of the subregion damaged with this
Leakage；It is finished by string leak detection, accordingly restores each string to the former closed cycle state of cooling.
7. blast furnace sealed cooling system as claimed in claim 6 concentrates the leak hunting method of leakage detection apparatus, characterized in that the water
Pressurize detection method of going here and there is suitable for production and neutralizes under Status of hugh wind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510282389.8A CN106282462B (en) | 2015-05-28 | 2015-05-28 | A kind of blast furnace sealed cooling system concentrates leakage detection apparatus and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510282389.8A CN106282462B (en) | 2015-05-28 | 2015-05-28 | A kind of blast furnace sealed cooling system concentrates leakage detection apparatus and method |
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| Publication Number | Publication Date |
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| CN106282462A CN106282462A (en) | 2017-01-04 |
| CN106282462B true CN106282462B (en) | 2018-10-02 |
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| CN107796572A (en) * | 2017-10-18 | 2018-03-13 | 云南钛业股份有限公司 | A kind of quick method for determining to let out pipeline in furnace chamber |
| CN107858467B (en) * | 2017-11-10 | 2020-02-14 | 中冶赛迪上海工程技术有限公司 | Blast furnace cooling water leakage detection method and system |
| CN107805678B (en) * | 2017-11-23 | 2023-03-14 | 中冶赛迪工程技术股份有限公司 | Drainage system for discharging accumulated water in blast furnace |
| CN110295262B (en) * | 2018-03-22 | 2021-02-19 | 宝山钢铁股份有限公司 | Accurate leak hunting alarm system of blast furnace cross temperature measurement pole |
| CN114729711A (en) * | 2019-12-20 | 2022-07-08 | 斯瓦戈洛克公司 | Fluid component body with leak test channel |
| CN113981162A (en) * | 2021-11-09 | 2022-01-28 | 马鞍山钢铁股份有限公司 | Leakage detection device for hot blast valve of closed soft water system |
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| JPH01149909A (en) * | 1987-12-08 | 1989-06-13 | Kawasaki Steel Corp | Method for detecting leakage of cooling piping for furnace bottom in blast furnace |
| CN1052539C (en) * | 1992-08-28 | 2000-05-17 | 北京科技大学 | Leakage testing system and method for closed soft water cooling loop of blast furnace |
| CN2172867Y (en) * | 1993-12-20 | 1994-07-27 | 冶金工业部建筑研究总院 | Leak detector for blast furnace cooling water |
| JP3299075B2 (en) * | 1995-03-30 | 2002-07-08 | 新日本製鐵株式会社 | How to detect water leakage from the tuyere |
| JPH10219322A (en) * | 1997-02-05 | 1998-08-18 | Nisshin Steel Co Ltd | Detection of water leakage into blast furnace |
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| CN101736104A (en) * | 2009-12-31 | 2010-06-16 | 中冶南方工程技术有限公司 | Blast-furnace soft water sealing and circulation cooling system |
| CN101705322A (en) * | 2009-12-30 | 2010-05-12 | 安阳钢铁股份有限公司 | Leak-detecting method for cooling system of blast furnace |
| CN201873704U (en) * | 2010-11-12 | 2011-06-22 | 莱芜钢铁股份有限公司 | Row-fixing and leakage-searching device for cooling wall of blast furnace |
| CN103031396A (en) * | 2012-08-02 | 2013-04-10 | 宝钢集团新疆八一钢铁有限公司 | Method for leakage detecting and handling of blast furnace soft water closed circulating cooling system |
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| US12123808B2 (en) | 2020-12-16 | 2024-10-22 | Swagelok Company | Fluid component body with leak test passages |
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