CN106282462A - 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 described blast furnace sealed cooling system is circumferentially with some cooler bye-pass water strings along blast furnace；Some cooler bye-pass water strings are divided into some Ge Zi districts along blast furnace circumference, and Mei Gezi district comprises some cooler bye-pass water strings, and Mei Gezi district is one and concentrates leak detection district；Cooler bye-pass water string in Mei Gezi district connects flexible pipe by a three-way valve respectively, and connect a connecting branch by snap joint, each connecting branch is connected to a connection house steward, connects house steward's port of export and connects the drain pipe of rhone, sets a drain valve in drain pipe；Connecting and set a Pressure gauge on house steward's port of export pipeline and connect degassing bag by connecting tube, degassing bag sets exhaustor and air bleeding valve, and its top sets overflow pipe and overflow valve, and its port of export is connected to drain pipe；Degassing bag sets inlet valve.The present invention can detect the damaged leakage point of the cooler of blast furnace sealed cooling system quickly, efficiently, accurately.
Description
Technical field
The present invention relates to blast-furnace technique, concentrate leakage detection apparatus particularly to a kind of blast furnace sealed cooling system
And method.
Background technology
Blast furnace is the closed reactor of a High Temperature High Pressure, for extending its service life, and each at blast furnace
Part has been covered with chiller, expresses the resistance to material to blast furnace and lowers the temperature and form effective slag crust and protect
Washing away of furnace retaining material, air-flow and slag ferrum.The carrier that chiller heat is taken out of have selected cooling water, and one
Denier generation leakage is easily caused cooling device scaling loss and to the substantial amounts of water of blast furnace internal leakage, has had a strong impact on height
The production run of stove, the generation possibly even causing the cool accident of stove of especially severe.So fast and stable
Efficiently the leak detection of cooling device breakage accurately is the key that blast-furnace body cooling device is safeguarded, is to ensure that height
Stove safety in production and the important step of body of heater longevity.
Though the leak hunting method that blast furnace sealed cooling system is used at present is more, but from technological layer
Saying, be all that leak hunting technology function singleness is clumsy, the functional effect in practical operation Technology application is the most steady
Fixed firm, it is susceptible to missing inspection or erroneous judgement problem, the most just so makes the precision that cooling device is hunted leak
Have a greatly reduced quality.Therefore also results in slowing of leak detection operation, the longest, it is again in body of heater district
Under the working environment of territory high temperature, coal gas and dust, cause bigger labor intensity, too much consume
The physical ability of operating personnel, so also making the degradation of leak detection operation, efficiency step-down.Owing to lacking
A kind of safe and reliable stable leak hunting technology means, and then greatly reduce the work efficiency of entirety.
It addition, discuss in prior art is all blast furnace leak detection function method under production status, and
But lacking means for blast furnace in the leak detection of damping down state, this is also that leak hunting technology function is incomplete effectively
Performance.
Complete leak hunting technology is, no matter which kind of duty blast furnace cooling device is in, and damaged
The difference condition such as leak source size degree and difference position, it should can reliably detect accurately and efficiently in time
Judge the content broken leakage of cooling device, and it is specious not have missing inspection, erroneous judgement etc.
Determine problem.
Through retrieval, retrieve the patent application of four blast furnace cooling systems leak detection, but method of its leak detection
With the function singleness of device, and in actual mechanical process, precision is the highest, efficiency is low, labor intensity is big,
The still unresolved problem that presently, there are.Specific as follows:
Chinese patent CN201210272202.2 is " a kind of for blast furnace soft water closed circulation cooling system
Leak detection and method of disposal " its leak detection part judgement: 1) follow the tracks of soft water system expansion drum liquid level,
Judge whether that cooling wall exists breakage according to moisturizing frequency；2) expansion drum of soft water system or degassing tank
In detect coal gas, show that the soft water pressure of upper shaft is less than the gas pressure in upper shaft stove；
3) turnover panel effusion meter is monitored in real time, when the current in turnover panel effusion meter have bubble or nebulousurine, shows cold
But the cooling wall that wall longitudinally comprises this cooling water pipeline has breakage；4) soft water inspection pH reduces,
Show that cooling wall has breakage；5) observe shell of blast furnace eye slab and have the exudate of water mark, Natrii Sulfas, the most really
Surely the water entered in stove is taken out of by coal gas, entrainment of the grouting material of stove Intradermal, i.e. reveals coal gas at stove skin
Point water seepage mark, Natrii Sulfas, show that cooling wall has breakage.
This patent there is no corresponding leakage detection apparatus, and method is complex, wherein, by observing all stoves
Skin eye slab has the exudate of water mark, Natrii Sulfas, and observes the turnover panel flow on circumference one whole circle water string
The methods such as the judgement that meter is carried out, the sheerly what is said or talked about of field experience, only with water mark, Natrii Sulfas or internal water gas
The phenomenons such as bubble, it is impossible to this is proved it must is that cooling wall string pipeline has breakage, such as when this regional water
When temperature is heated significantly raised, bubble also can constantly occur, it is impossible to this is concluded to be coal gas in current, reason
Opinion is according to insufficient, so the precision of leak detection is the highest when longitudinally disposing, it is difficult to promptly and accurately find cold
But the damaged leakage of equipment, leak detection efficiency is low, easily produces missing inspection and erroneous judgement problem, and its leak detection is made
Industry complex steps, the labor intensity so carrying out leak detection operation is too big, the longest.
" the leak detection side of a kind of blast furnace cooling system as disclosed in Chinese patent CN200910227770.9
Method ", it first confirms that the cooling tube that leaks, by the air bleeding valve phase of a transparent tube with middle part one-step cooling pipe
Even, then the communicating valve of one-step cooling pipe bottom, described middle part is closed；Afterwards by this cooling tube that leaks
Backwater valve close, the air bleeding valve of the highest one-step cooling pipe of this cooling tube that leaks is opened；Then will
The pipe end of described transparent tube brings up to the position of the air bleeding valve of the highest one-step cooling pipe of this cooling tube that leaks
Put, and the air bleeding valve being connected with transparent tube opened, make this water leaking in cooling tube freely decline,
And keep Tong Bu with the water level of transparent tube instruction, and then confirm the position leaked；As water level declines always,
Until transparent tube and air bleeding valve junction have not yet to see the sign of stopping, under the position that transparent tube can be connected
Move, and repeat said method continuation observation, until water level stops declining the position that can confirm to leak
Put.This patent is on the premise of confirming the cooling tube leaked, and the present invention is just for the most efficient
Accurately confirm the cooling device cooling tube that all breakages are leaked.
As disclosed in Chinese patent CN03232568 " leakage detector for coolnig-equipment of blast furnace ", including import
Part and exit portion, inlet part includes short tube, ball valve, reducer pipe, snap joint, connects successively
Connecing, be provided with snap close pressing plate in snap joint, the snap joint of inlet part one end is connected to be measured
At the inlet union of equipment, the short tube of the other end connects pressure source；Exit portion include short tube, ball valve,
Threeway, reducer pipe and snap joint, be sequentially connected with, and is additionally provided with a Pressure gauge, and Pressure gauge passes through threeway
Connecting with pipeline, be provided with snap close pressing plate in snap joint, the snap joint of exit portion one end is even
It is connected at the outlet connection of Devices to test.This leak detector adapts to different caliber interfaces, is not required to during detection
The body part of Devices to test to be removed, reduces labor strength, easy to detect easy, detection
Speed is fast, and this leak detector is easy to connect, need not when detection stop production, cut off the water, it is ensured that high
The seriality that stove produces.This patent only relies on Pressure gauge and detects, and method is single, and precision is the highest, and
Can only carry out by root water pipe during detection, efficiency is low.
Chinese patent CN93247830.1 is disclosed " leak detector for blast furnace cooling water ", and it is by being combined spy
Head and signal processor form.Combined probe is mainly by threeway assembly parts, straight tube, seal member, gold
Belonging to sleeve pipe and temperature sensor composition, signal processor is at the signal to combined probe pickup
Reason, and have display and warning function.This leakage detection apparatus can measure blast-furnace soft water closed cycle exactly
Cooling system and the blast furnace industry water open circuit temperature conductivity of cooling system water body and water body leakage situation.
This patent only relies on the change of mensuration electrical conductivity and determines whether to leak, and tend to occur in blast furnace leaks
Being to stove internal leakage, now cooling electrical conductivity of water does not change, and this patent cannot confirm.
Summary of the invention
It is an object of the invention to provide a kind of blast furnace sealed cooling system and concentrate leakage detection apparatus and method,
The damaged leakage point of the cooler of blast furnace sealed cooling system can be detected quickly, efficiently, accurately,
Improve precision of detecting leak gas, improve leak detection efficiency, shortening leak detection time, and then reduce labor intensity, for height
The safety and stability production run of stove provides solid foundation to ensure.
For reaching above-mentioned purpose, the technical scheme is that
A kind of blast furnace sealed cooling system concentrates leakage detection apparatus, and described blast furnace sealed cooling system is along blast furnace
It is circumferentially with some cooler bye-pass water strings, it is characterised in that described some cooler bye-pass water
String is divided into some Ge Zi districts along blast furnace circumference, and Mei Gezi district comprises several cooler bye-pass water
String, Mei Gezi district is one and concentrates leak detection district；Cooler bye-pass water string in Mei Gezi district leads to respectively
Cross a three-way valve and connect flexible pipe, this connection flexible pipe by snap joint connects prop up
Pipe, each connecting branch is connected to a connection house steward, and this connection house steward's port of export connects rhone
Drain pipe, arranges a drain valve in drain pipe；A Pressure gauge is set on described connection house steward's port of export pipeline
And connecting a degassing bag by connecting tube, this degassing bag top sets exhaustor and air bleeding valve, and degassing is wrapped
Portion sets overflow pipe and overflow valve, and finder outlet end is connected in the drain pipe pipeline under drain valve；De-
Gas bag sets inlet valve.
Further, described some cooler bye-pass water strings are divided into 16 Ge Zi districts along blast furnace circumference, each
Sub-district comprises 10～15 cooler bye-pass water strings.
Preferably, described degassing bag is kettle type degassing bag.
The blast furnace sealed cooling system of the present invention concentrates the leak hunting method of leakage detection apparatus, uses draining directly perceived
Pipe nebulousurine is panted methods of printing, including:
1) leakage detection apparatus valve state: degassing bag exhaust valve closure, degassing bag inlet valve closes 8 and closes, de-
Gas bag overflow valve cuts out, and drain valve is opened；
2) turn down the number string cooler water string water intaking valve aperture of this subregion, turn down the water yield controlling this subregion
And hydraulic pressure, the hydraulic pressure in Shi Gai district cooler water string pipeline is all significantly lower than furnace pressure, then by this point
The three-way valve of the cooler water string in district is switched to open a way hull-borne, the most once cooler of this subregion
There is breakage leakage in water string pipeline, in must having stove, coal gas enters in water string pipeline from damaged leakage point anti-channeling,
Thus it is carried over drain pipe, now will can be visually seen drain pipe and there is nebulousurine breathing phenomenon, during this is
Between the reason constantly discharged entrainment of blast furnace gas bubble；
3) drainage situation of single drain pipe on this subregion leakage detection apparatus is observed, if there have nebulousurine to pant to be existing
As, i.e. show that all cooler water string pipelines of this subregion must have certain a string or be more than more than a string
Damaged leakage；
4) use exclusive method, the cooler number string water string pipeline under this subregion open-circuit condition is carried out by string
Switching returns to former closed circuit state, and it can be completed by switching three-way valve；While recovering by string,
Observe whether drain pipe nebulousurine breathing phenomenon eliminates；By in string recovery process, drain pipe is without change
Changing, then proceed, if finding to eliminate, then a string cooler water string pipeline of explanation just switching has broken
Damage leakage, further this string drain pipe is carried out coal gas ignition inspection, light a fire, determine breakage.
Also, blast furnace sealed cooling system of the present invention concentrates the leak hunting method of leakage detection apparatus, use degassing bag
Coal gas collects detection method, including:
1) leakage detection apparatus valve state: degassing bag inlet valve is opened, and overflow valve is opened, exhaust valve closure,
The drain valve of drain pipe is closed, and makes the draining of each cooler water string pipeline of each subregion all be wrapped by degassing
Rear discharge；
2) turn down the number string cooler water string water intaking valve aperture of this subregion, turn down the water yield controlling this subregion
And hydraulic pressure, the hydraulic pressure in Shi Gai district cooler water string pipeline is all significantly lower than furnace pressure, then by this point
The cooler water string outlet three way Vavle switching in district is to open circuit hull-borne；The now number string cooling of this subregion
The draining of device water string pipeline is all discharged after degassing packet stream, if the cooler water string pipeline in this subregion
There is breakage leakage, the most necessarily have coal gas from the water body flowing through degassing bag, separate effusion, effusion
The top rising to degassing bag is constantly assembled by coal gas；
3) open degassing bag air bleeding valve, with coal gas detector alignment degassing bag exhaust pipe mouth, carry out coal gas
Detection, measure coal gas, illustrate this subregion number string cooler water string pipelines in must have a string or a string with
Upper existence breakage leakage；The method carrying out coal gas ignition at degassing bag exhaustor port can also be used,
Lighting a fire, the most also explanation must have a string or a string above existence breakage leakage；
4) still by exclusive method, the cooler number string water string pipeline under this subregion open-circuit condition is carried out by string
Switching returns to former closed circuit state, can be completed by switching three-way valve, while recovering by string, and inspection
Survey and follow the tracks of whether exhaust pipe mouth coal gas changes disappearance；By in string recovery process, do not have if measuring coal gas
Change, then proceed, if measuring coal gas change hour, then explanation just a string of switching has breakage to let out
Leakage；Further this string drain pipe is carried out coal gas detection or igniting checks, measure coal gas or light a fire,
Then judge that this string pipeline breakage leaks.
Further, the blast furnace sealed cooling system of the present invention concentrates the leak hunting method of leakage detection apparatus, use water
String pressurize detection method, including:
1) leakage detection apparatus valve state: degassing bag inlet valve cuts out, and overflow valve cuts out, exhaust valve closure,
Drain valve is closed；
2) the cooler water string water intaking valve of this subregion is closed, by the cooler water string outlet three way of this subregion
Vavle switching, to open circuit hull-borne, carries out pressurize test to the cooler each pipeline of water string；
3) observing Pressure gauge packing state, denumerable string cooler water string is carried out simultaneously, normal cooler
Water string pipeline keeps pressure constant, if there being will necessarily pressure release changing of damaged leakage, judges this with this
The most damaged leakage of the cooler water string pipeline of subregion；Complete by string leak detection, each string of corresponding recovery is to former
The closed cycle state of cooling.
Further, described water string pressurize detection method is applicable to produce under neutralization damping down state.
Beneficial effects of the present invention:
The present invention efficiently solves the blast furnace sealed cooling system slow-footed problem of leak detection, and it is circumference number
Measure huge cooler arm water string (general big blast furnace is all about 200 strings) leak detection one by one to taper to
The concentration leak detection of several subregions, simplifies, thus significantly reduces leak detection operation frequency, improves
Leak detection speed.Improve leak detection efficiency, shorten the leak detection time, be conducive to improving the operating rate of blast furnace.
The present invention efficiently solves the problem of blast furnace sealed cooling system leak detection difficulty, no matter cooler water
The damaged leak sizes degree of string how, and particularly Small leak is difficult to find, and can be transferred through three concentrations
Leak hunting method detects effectively, the advantage having fully demonstrated accurate leak detection.
The present invention, by the most quickly leak detection, shortens the leak detection time, greatly reduces labor intensity,
And then improve the working performance of quick leak-checking.
The present invention has concentrated three kinds of methods to be integrated and has detected, and testing result can be mutually authenticated,
So the detection to cooler water string breakage leakage judges the most more scientific.
The present invention, by the most quickly leak detection, can control to solve cooler in time and leak the most in a large number
The impact of water direct motion safe on conditions of blast furnace, it is to avoid blast furnace temperature deteriorates, fuel ratio consumption rises, very
To the generation that the serious accidents such as stove is cool occur.
The present invention under any work condition state of blast furnace, can reasonable utilization, have sealed cooling system inspection
The general applicability of leakage technology.
Accompanying drawing explanation
Fig. 1 is the structural representation in the embodiment of the present invention (a Ge Zi district).
Detailed description of the invention
Seeing Fig. 1, the blast furnace sealed cooling system of the present invention concentrates leakage detection apparatus, and described blast furnace is airtight
Cooling system is circumferentially with some cooler bye-pass water strings 1, described some cooler arms along blast furnace
Road water string is divided into some Ge Zi districts 10 along blast furnace circumference, Mei Gezi district 10 comprise 10～15 cold
But device bye-pass water string 1 and accordingly water supply endless tube 30, backwater endless tube 40 and backwater collector and coal gas
Catcher 50, Mei Gezi district 10 is one and concentrates leak detection district；Cooler arm in Mei Gezi district 10
Road water string 1 connects flexible pipe 3 by a three-way valve 2 respectively, and this connection flexible pipe 3 is by fast
Quick coupling 4 connects a connecting branch 5, and each connecting branch 5 is connected to a connection house steward 6, this connection
House steward 6 port of export connects the drain pipe 7 of rhone 20, arranges a drain valve in drain pipe 7
F1；Set a Pressure gauge 8 and connect a degassing by connecting tube on described connection house steward 6 port of export pipeline
Wrapping 9, this degassing is wrapped 9 tops and is set exhaustor 91 and air bleeding valve F2, and degassing bag 9 tops set overflow pipe
92 and overflow valve F3, overflow pipe 92 port of export is connected in the drain pipe pipeline under drain valve F1；
Degassing bag 9 sets inlet valve F4.
In the present embodiment, by all cooler bye-pass water strings of non-for blast furnace sealed cooling system subregion
Carrying out circumference subregion, (general big blast furnace Mei Gezi district is responsible for 10～15 to be the most rationally divided into 16 Ge Zi districts
String), make blast furnace circumference each road cooler water string arm, circumferentially 16 distribution arrangements, correspondingly
It is evenly distributed in these 16 identical concentration leakage detection apparatus.Thus cold circumference substantial amounts
But device arm water string (general big blast furnace is all at 200 strings) leak detection one by one tapers to the collection of 16 subregions
Middle leak detection, thus significantly reduce leak detection operation frequency, shorten the leak detection time, greatly reduce work
Intensity, and then improve the working performance of quick leak-checking.
Preferably, described degassing bag is kettle type degassing bag.
The blast furnace sealed cooling system of the present invention concentrates the leak hunting method of leakage detection apparatus, uses draining directly perceived
Pipe nebulousurine is panted methods of printing, including:
1) leakage detection apparatus valve state: degassing bag exhaust valve closure, degassing bag inlet valve closes 8 and closes, de-
Gas bag overflow valve cuts out, and drain valve is opened；
2) turn down the number string cooler water string water intaking valve aperture of this subregion, turn down the water yield controlling this subregion
And hydraulic pressure, the hydraulic pressure in Shi Gai district cooler water string pipeline is all significantly lower than furnace pressure, then by this point
The three-way valve of the cooler water string in district is switched to open a way hull-borne, the most once cooler of this subregion
There is breakage leakage in water string pipeline, in must having stove, coal gas enters in water string pipeline from damaged leakage point anti-channeling,
Thus it is carried over drain pipe, now will can be visually seen drain pipe and there is nebulousurine breathing phenomenon, during this is
Between the reason constantly discharged entrainment of blast furnace gas bubble；
3) drainage situation of single drain pipe on this subregion leakage detection apparatus is observed, if there have nebulousurine to pant to be existing
As, i.e. show that all cooler water string pipelines of this subregion must have certain a string or be more than more than a string
Damaged leakage；
4) use exclusive method, the cooler number string water string pipeline under this subregion open-circuit condition is carried out by string
Switching returns to former closed circuit state, and it can be completed by switching three-way valve；While recovering by string,
Observe whether drain pipe nebulousurine breathing phenomenon eliminates；By in string recovery process, drain pipe is without change
Changing, then proceed, if finding to eliminate, then a string cooler water string pipeline of explanation just switching has broken
Damage leakage, further this string drain pipe is carried out coal gas ignition inspection, light a fire, determine breakage.
Also, blast furnace sealed cooling system of the present invention concentrates the leak hunting method of leakage detection apparatus, use degassing bag
Coal gas collects detection method, including:
1) leakage detection apparatus valve state: degassing bag inlet valve is opened, and overflow valve is opened, exhaust valve closure,
The drain valve of drain pipe is closed, and makes the draining of each cooler water string pipeline of each subregion all be wrapped by degassing
Rear discharge；
2) turn down the number string cooler water string water intaking valve aperture of this subregion, turn down the water yield controlling this subregion
And hydraulic pressure, the hydraulic pressure in Shi Gai district cooler water string pipeline is all significantly lower than furnace pressure, then by this point
The cooler water string outlet three way Vavle switching in district is to open circuit hull-borne；The now number string cooling of this subregion
The draining of device water string pipeline is all discharged after degassing packet stream, if the cooler water string pipeline in this subregion
There is breakage leakage, the most necessarily have coal gas from the water body flowing through degassing bag, separate effusion, effusion
The top rising to degassing bag is constantly assembled by coal gas；
3) open degassing bag air bleeding valve, with coal gas detector alignment degassing bag exhaust pipe mouth, carry out coal gas
Detection, measure coal gas, illustrate this subregion number string cooler water string pipelines in must have a string or a string with
Upper existence breakage leakage；The method carrying out coal gas ignition at degassing bag exhaustor port can also be used,
Lighting a fire, the most also explanation must have a string or a string above existence breakage leakage；
Still by exclusive method, carry out cutting by string to the cooler number string water string pipeline under this subregion open-circuit condition
Change and return to former closed circuit state, can be completed by switching three-way valve, while recovering by string, detection
Follow the tracks of whether exhaust pipe mouth coal gas changes disappearance；By in string recovery process, do not become if measuring coal gas
Changing, then proceed, if measuring coal gas change hour, then a string of explanation just switching has damaged leakage；
Further this string drain pipe is carried out coal gas detection or igniting checks, measure coal gas or light a fire, then sentencing
Fixed this string pipeline breakage leakage.
Further, the blast furnace sealed cooling system of the present invention concentrates the leak hunting method of leakage detection apparatus, use water
String pressurize detection method, including:
A) leakage detection apparatus valve state: degassing bag inlet valve cuts out, and overflow valve cuts out, exhaust valve closure,
Drain valve is closed；
B) the cooler water string water intaking valve of this subregion is closed, by the cooler water string outlet three way of this subregion
Vavle switching, to open circuit hull-borne, carries out pressurize test to the cooler each pipeline of water string；
C) observing Pressure gauge packing state, denumerable string cooler water string is carried out simultaneously, normal cooler
Water string pipeline keeps pressure constant, if there being will necessarily pressure release changing of damaged leakage, judges this with this
The most damaged leakage of the cooler water string pipeline of subregion；Complete by string leak detection, each string of corresponding recovery is to former
The closed cycle state of cooling.
Further, described water string pressurize detection method is applicable to produce under neutralization damping down state.
Claims (7)
1. blast furnace sealed cooling system concentrates a leakage detection apparatus, and described blast furnace sealed cooling system is along blast furnace
It is circumferentially with some cooler bye-pass water strings, it is characterised in that
Described some cooler bye-pass water strings are divided into some Ge Zi districts along blast furnace circumference, often
Ge Zi district comprises several cooler bye-pass water strings, and Mei Gezi district is one and concentrates leak detection district；
Each cooler bye-pass water string in Mei Gezi district connects one by a three-way valve respectively
Connecting flexible pipe, this connection flexible pipe connects a connecting branch by snap joint, and each connecting branch is even
Being connected to a connection house steward, this connection house steward's port of export connects the drain pipe of rhone, draining
Pipe arranges a drain valve；A Pressure gauge is set and by even on described connection house steward's port of export pipeline
Adapter connects a degassing bag, and this degassing bag top sets exhaustor and air bleeding valve, and the degassing portion of wrapping sets
Overflow pipe and overflow valve, finder outlet end is connected in the drain pipe pipeline under drain valve；De-
Gas bag sets inlet valve.
2. blast furnace sealed cooling system as claimed in claim 1 concentrates leakage detection apparatus, it is characterised in that
Described some cooler bye-pass water strings are divided into 16 Ge Zi districts along blast furnace circumference, and Mei Gezi district comprises
10～15 cooler bye-pass water strings.
3. blast furnace sealed cooling system as claimed in claim 1 concentrates leakage detection apparatus, it is characterised in that
Described degassing bag is kettle type degassing bag.
4. blast furnace sealed cooling system as claimed in claim 1 concentrates the leak hunting method of leakage detection apparatus, its
Feature is, uses drain pipe nebulousurine directly perceived to pant methods of printing, including:
1) leakage detection apparatus valve state: degassing bag exhaust valve closure, degassing bag inlet valve closes 8 and closes, de-
Gas bag overflow valve cuts out, and drain valve is opened；
2) turning down the water intaking valve aperture of the number string cooler water statements based on collusion water ring pipe of this subregion, turning down control should
The water yield of subregion and hydraulic pressure, the hydraulic pressure in Shi Gai district cooler water string pipeline is all significantly lower than stove
Interior pressure, then the three-way valve of the cooler water string of this subregion is switched to hull-borne of opening a way,
The most once there is breakage leakage in the cooler water string pipeline of this subregion, must have in stove coal gas from
Damaged leakage point anti-channeling enters in water string pipeline, thus is carried over drain pipe, now will be directly perceived
Seeing that drain pipe exists nebulousurine breathing phenomenon, this is middle constantly entrainment of blast furnace gas bubble
The reason discharged；
3) drainage situation of single drain pipe on this subregion leakage detection apparatus is observed, if there being nebulousurine breathing phenomenon,
I.e. show that all cooler water string pipelines of this subregion must have certain a string or more than a string with
On damaged leakage；
4) use exclusive method, the cooler number string water string pipeline under this subregion open-circuit condition is carried out by string
Switching returns to former closed circuit state, and it can be completed by switching three-way valve；Recover by string
Meanwhile, observe whether drain pipe nebulousurine breathing phenomenon eliminates；By going here and there in recovery process, draining
Pipe without change, then proceeds, if finding to eliminate, then explanation just switching is a string
Cooler water string pipeline has damaged leakage, further this string drain pipe is carried out coal gas ignition inspection
Look into, light a fire, determine breakage.
5. blast furnace sealed cooling system as claimed in claim 1 concentrates the leak hunting method of leakage detection apparatus, its
Feature is, uses degassing bag coal gas to collect detection method, including:
1) leakage detection apparatus valve state: degassing bag inlet valve is opened, and overflow valve is opened, exhaust valve closure,
The drain valve of drain pipe is closed, and makes the draining of each cooler water string pipeline of each subregion all pass through
Discharge after degassing bag；
2) turn down the number string cooler water string water intaking valve aperture of this subregion, turn down the water yield controlling this subregion
And hydraulic pressure, the hydraulic pressure in Shi Gai district cooler water string pipeline is all significantly lower than furnace pressure, then
By the cooler water string outlet three way Vavle switching of this subregion to open circuit hull-borne；Now this point
The draining of the number string cooler water string pipeline in district is all discharged after degassing packet stream, if this subregion
In cooler water string pipeline exist breakage leakage, the most necessarily have coal gas from flow through degassing bag
Water body in separate effusion, the coal gas of effusion by rise to degassing bag top constantly assemble；
3) open degassing bag air bleeding valve, with coal gas detector alignment degassing bag exhaust pipe mouth, carry out coal gas
Detection, measure coal gas, illustrate this subregion number string cooler water string pipelines in must have a string or
A string above existence breakage leakage；Can also use and carry out coal gas at degassing bag exhaustor port
The method of igniting, lights a fire, and the most also explanation must have and a string or a string above there is breakage and let out
Leakage；
4) still by exclusive method, the cooler number string water string pipeline under this subregion open-circuit condition is carried out by string
Switching returns to former closed circuit state, can be completed by switching three-way valve, same recover by string
Time, whether detecting and tracking exhaust pipe mouth coal gas changes disappearance；By going here and there in recovery process, if
Measuring coal gas to be not changed in, then proceed, if measuring coal gas change hour, then explanation is just
The a string of switching has damaged leakage；Further this string drain pipe is carried out coal gas detection or igniting
Check, measure coal gas or light a fire, then judging that this string pipeline breakage leaks.
6. blast furnace sealed cooling system as claimed in claim 1 concentrates the leak hunting method of leakage detection apparatus, its
Feature is, uses water string pressurize detection method, including:
1) leakage detection apparatus valve state: degassing bag inlet valve cuts out, and overflow valve cuts out, exhaust valve closure,
Drain valve is closed；
2) the cooler water string water intaking valve of this subregion is closed, by the cooler water string outlet three way of this subregion
Vavle switching, to open circuit hull-borne, carries out pressurize test to the cooler each pipeline of water string；
3) observing Pressure gauge packing state, denumerable string cooler water string is carried out simultaneously, normal cooler
Water string pipeline keeps pressure constant, if there being will necessarily pressure release changing of damaged leakage, comes with this
Judge the most damaged leakage of cooler water string pipeline of this subregion；Complete, accordingly by string leak detection
Recover 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, its
Feature is, described water string pressurize detection method is applicable to produce under neutralization damping down state.
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 |
Applications Claiming Priority (1)
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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 |
| CN107805678A (en) * | 2017-11-23 | 2018-03-16 | 中冶赛迪工程技术股份有限公司 | A kind of drainage system for discharging State of Blast Furnace internal water accumulation |
| CN107858467A (en) * | 2017-11-10 | 2018-03-30 | 中冶赛迪上海工程技术有限公司 | A kind of blast-furnace cooled water leak hunting method and system |
| CN110295262A (en) * | 2018-03-22 | 2019-10-01 | 宝山钢铁股份有限公司 | A kind of accurate leakage alarm system of blast furnace cross thermometric bar |
| 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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| 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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