CN105200177A - Positioning leak detection instrument for blast furnace cooling water - Google Patents
Positioning leak detection instrument for blast furnace cooling water Download PDFInfo
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- CN105200177A CN105200177A CN201410293303.7A CN201410293303A CN105200177A CN 105200177 A CN105200177 A CN 105200177A CN 201410293303 A CN201410293303 A CN 201410293303A CN 105200177 A CN105200177 A CN 105200177A
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Abstract
The invention discloses a positioning leak detection instrument for blast furnace cooling water. The positioning leak detection instrument comprises a housing, a multifunctional valve, a temperature detecting meter, a safety valve, a pair of brackets, a glass window cylinder, a floater, an end cover, a screw rod, a cleaning brush, a remote-sending terminal base, and an induction switch, wherein a gas collection chamber is formed in the housing; the floater is mounted in the glass window cylinder; the end cover is mounted at the tops of the brackets; the top of the glass window cylinder is in sealed connection with the bottom of the end cover; the screw rod is arranged in the glass window cylinder in a matched manner; a worm is arranged at the upper end of the screw rod in a matched manner, and is meshed with a worm gear; the cleaning brush is mounted on the lead screw, and used for cleaning the inner surface of the glass window cylinder by moving up and down along the screw rod; the remote-sending terminal base is mounted on the brackets; signal output lines of the temperature detecting meter and a pressure detection meter are connected into a remote-sending terminal box; the induction switch is arranged on the remote-sending terminal box in a sliding manner, and moves up and down with a magnet in the floater; the signal wire of the induction switch is connected into the remote-sending terminal box.
Description
Technical field
The present invention relates to blast-furnace cooled water detecting instrument, particularly the multi-functional water coolant positioning leakage inspector of blast furnace.
Background technology
In world's Iron and Steel Production, produce more than 97% of iron Zong accounted for by the pig iron of blast-furnace smelting, although direct-reduction and smelting reduction technology have a great development, but its throughput can't be satisfied the demand, and 21 century is still based on blast furnace ironmaking.
The production security of blast furnace, continuity, sustainability are the keys of each smelting unit-economy benefit.The key of prolonging campaign depends on the longevity of blast-furnace body.The Operation and Maintenance of the selection of the blast-furnace body type of cooling, the design and installation of cooling apparatus and blast fumance is the determinative affecting blast-furnace body longevity.
Blast furnace comprises last furnace shell, furnace throat, shaft, furnace bosh, bosh, cupola well, furnace bottom, furnace foundation, furnace lining, throat armo(u)r and blast furnace cooling apparatus.
Modernized blast furnace widely uses the steel plate furnace shell of welding, and effect is fixing cooling apparatus, ensures that blast furnace masonry is firm, and sealing body of heater, what have also bears furnace roof load.
Furnace shell physical dimension should adapt with blast furnace lines, body of heater each portion thickness, cooling apparatus structure formation.
Furnace throat is positioned at the topmost portion of blast-furnace body, cylindrical.Furnace throat be furnace charge add entrance, be also the export mouth of coal gas.
Shaft is the main region of blast furnace iron ore indirect reduction, is called for short truncated cone-shaped, expands gradually from top to bottom in the frustum of a cone, in order to make furnace charge unlikely formation material arch after heat generation volumetric expansion, and reduces furnace charge decline resistance.
The size of stack angle declines to furnace charge and gas fluid distrbution has a significant impact.
Furnace bosh is the position of blast furnace largest diameter.It makes shaft and bosh be able to reasonable transition.
Bosh is the main section of blast furnace fusing and slag making, in inversed taper platform shape.For adapting to the feature of load melting rear volumetric shrinkage, its diameter reduces from top to bottom gradually, forms certain bosh angle.
Cupola well is blast furnace fuel burning, the reaction of slag iron and storage and discharge areas, cylindrical.Iron notch, cinder notch and air port are all located at cupola well position, and therefore it is also bear coal gas of high temperature and slag iron physics and chemistry to corrode the most violent position.
Furnace bottom is the static pressure that Blast Furnace Bottom masonry not only will bear furnace charge, slag liquid and molten iron, and be subject to the high temperature of 1400 ~ 4600 DEG C, the slag iron temperature of solidification only having masonry surface temperature to be reduced to it to contact, and Surface Creation slag crust (or iron-clad), it could be stoped to suffer erosion further, so must cool furnace bottom, usually adopt air-cooled or water-cooled.
The effect of furnace foundation be by concentrate the weight born to pass to stratum equably according to stratum supporting capacity.The working space of blast furnace lining composition blast furnace, and play and reduce the effect from thermal stresses and chemical erosion of blast furnace thermosteresis, protection furnace shell and other metal construction.
Furnace lining is that use can resist the refractory material laying of high temperature action.
Furnace throat is under furnace charge frequently clashes into and washes away with the Gas Flow of high temperature, and working conditions is very severe, safeguards the destroyed prerequisite being upper blast furnace and regulating of its drum.For this reason, protecting sheet (steel brick) is set at furnace throat.Blast furnace lining internal temperature is up to 1400 DEG C, and general refractory brick all will soften and be out of shape.
Cooling equipment for blast furnace is arranged for extending the bricking life-span; set out in order to make the heat transmission in furnace lining; and make slag on furnace lining, be condensed into protective slag crust at bottom house; different by structure, blast furnace cooling apparatus is broadly divided into: the devices such as outside water-spraying control, the cooling of air port cinder notch, cooling stave, cooling plate, cooling water tank and air-cooled (water-cooled) furnace bottom.
Different by structure at present, blast furnace cooling apparatus is broadly divided into: the devices such as outside water-spraying control equipment, air port cinder notch cooling apparatus, cooling stave, cooling plate, cooling water tank and air-cooled (water-cooled) furnace bottom.
Outside equipment water jetting cooler can install annular water ring pipe in furnace shell outside in blast furnace stack bottom and bosh to carry out water-spraying control.Be usually used in blast furnace and use as a servant the later stage at stove, when cooling stave by beaker when, carry out outside water-spraying control to maintain production.Be characterized in that structure is simple, not high to water quality requirement.
Cooling stave and cooling water tank: cooling stave is arranged between bricking and furnace shell are the foundry goods plates that inside is cast with weldless steel tube.Be divided into light face cooling stave and edge brick cooling stave.Cooling water tank is also cooling plate, is to be embedded in the water cooler in blast furnace bricking, and material is cast iron or copper casting.Inside is for cavity type or be cast into the forms such as water pipe, and water flowing cools.
Furnace bottom cooling apparatus cools below furnace bottom, is to protect concrete furnace foundation, preventing burn-through of furnace hearth, extends campaign life.It is that in the weldless steel tube buried below furnace bottom refractory brick, ventilation or water flowing are carried out cooling.
Air port cooling apparatus is that blast-furnace smelting is blown necessary equipment.Generally be made up of large, medium and small three covers.Cinder notch cooling apparatus is the equipment of blast furnace slagging, Large Scale BF cinder notch by large cover, two covers, three covers and little cover totally four covers form.
The cooling stave of blast furnace cold media bearer is one of integral part forming blast furnace.Its Main Function effectively protects furnace shell; be exactly under the condition of Cooling Heat Transfer; ensure before furnace shell, form the barrier formed by cooling stave, slag crust together; coal gas, furnace charge, molten iron is avoided directly to contact with furnace shell; reduce casing temperature simultaneously; ensure that furnace shell steel plate is indeformable in the temperature range of thermal stresses, do not ftracture, thus maintenance blast furnace is normally produced.Cooling stave not only bears high temperature, and will bear the wearing and tearing of furnace charge, the washing away of the erosion of slag and furnace gas stream, therefore requires the over-all propertieies such as it possesses good hot strength, anti-oxidant growth, heat shock resistance, anti-rapid heat cycle do not split.
Production practice prove, the life-span of modern blast furnace generation stove labour no longer depends on machinery, electrical equipment, automatic equipment and cupola well, the damage of bottom refractory, erosion degree, and depends primarily on the life-span of blast furnace cooling stave.Modernized blast furnace improves constantly along with combustion intensity, and the heat produced within the unit time increases, and the heat flow rate per unit area that blast furnace lining and cooling stave bear is corresponding increase also.Within the unit time, heat to be passed rapidly, the effective cooling of cooling stave must be leaned on.If find cooling wall breakage and do not adopt an effective measure, so in effective cooling area, the heat passed will reduce, and water coolant just there will be local boiling, even the temperature on some cooling stave surface can reach 600 DEG C ~ 700 DEG C instantaneously, burns adjacent water pipe.Even if blast furnace has bricking, blow-on was less than 1 year, and bricking will come off, and mainly protected cooling stave by slag crust, and really play the still cooling stave of cooling effect later many years, the quality of cooling stave is the key affecting generation furnace life.
At present, domestic and international blast furnace cooling way choice has 3 kinds of normal method usually, comprising:
(1) open type industrial water circulation cooling: industrial water-cooled advantage is cooling system less investment, simple to operate, shortcoming is that water consumption, power consumption are many, and water quality did not carry out process, easily in cooling system fouling, cause system cools bad, water cooler burns out.It is more common that industrial water circulation cools steelmaking furnace in early days, and current domestic BF Design compares to be abstained to adopt the service water type of cooling.
(2) Vaporizing cooling: Vaporizing cooling, by the latent heat of vaporization work of soft water, can be saved a large amount of soft water, and there is not cooling system scale problems.If blast fumance is smooth, furnace temperature is stablized, and Vaporizing cooling just can work under natural circulation, not only brownout, also can not cause cold Yan's system lack of water phenomenon because shutting down power failure.The shortcoming of Vaporizing cooling is that cooling system temperature is high, is difficult to the heating power fluctuation adapting to high loading, easily makes cooling system valve pipe break, corrode.
(3) soft water closed circulating is cold: adopting soft water closed circulating cooling to eliminate fouling, improve cooling performance, is the effective measure extending cooling apparatus life-span and blast furnace length of service.A large amount of water can also be saved simultaneously, reduce energy consumption, reduce costs.Therefore, as a new technology, at home and abroad widely apply.But, blast furnace soft water closed circulation cooling system, once occur leak or produce vent plug (local superheating is caused) and can not find elbow early, can make cooling apparatus damaged further, and serious threat blast fumance, even make shorten blast furnace campaign, cause tremendous economic to lose.
China 1958 starts, the blast furnace type of cooling experienced by cooled by service water, Vaporizing cooling is to soft water closed circulating tinkling of pieces of jade process but.Applied analysis through Ge great designing institute, steel mill is known, and at present, Chinese large-sized blast furnace cooling stave adopts Vaporizing cooling to be unsuccessful.Use industrial water cooling, impurity is more, and line clogging is serious, and often cut off the water supply, this is the major reason that cooling apparatus burns out.Adopt closed loop sofe water to cool both water-savings, energy-conservation again, cooling performance is better, but leak hunting method is also immature.The leak hunting technology for this reason solving cooling stave in the blast furnace closed soft water recycle system is very necessary.
For the ease of analyzing, the inner side of cooling stave being born high temperature calls " hot side "; The opposite side that do not bear high temperature relative with furnace shell is " huyashi-chuuka (cold chinese-style noodles) ".Leaked in stove by hot side and cry " internal leakage "; The leakage of huyashi-chuuka (cold chinese-style noodles) is " external leakage ".Leak and can be divided into again " hole type " and " slit type ".So-called hole type refers to and produce larger deteriorating and water-cooled tube occur larger hole on cooling stave.Slit type means the faulted joint that cooling stave occurs, crack is also deep on water-cooled tube always.Its performance is summed up, and has following several basic form: (1) water inlet/outlet pipe of cooling wall ruptures, and belongs to and leaks outside, but when spillage is little because high stove outer covering and other appurtenants are not easy to be found; (2) run coal gas between water inlet/outlet pipe of cooling wall and sleeve pipe, this gets wall breakage due to cold, and coal gas is excessive under pressure effect in stove, can be found by on-the-spot smell or coal gas detector; (3) the snakelike water coolant in-tube fouling of cooling stave, heat-exchange capacity reduces, and cooling stave local or monoblock are burnt; (4) the snakelike water-cooled tube of cooling stave ruptures or is burnt, and monoblock cooling stave is scrapped.(5) performance of the inefficacy of cooling stave and sign.
It is phenomenon common in blast fumance that blast furnace cooling stave leaks.Generally leak little on blast fumance impact, if but find not in time leaking, or deal with improperly, will accident be developed into.The lighter's stove is cool, causes molten iron sulfur-bearing to raise, and quality accident occurs.Hearth freeze-up can occur severe one or furnace wall knot is thick.Such as: in May, 1998, Handan Iron and Steel Co 3# blast furnace was not found out in time because cooling apparatus leaks in a large number, caused blast furnace hearth to freeze, and break down time reaches 4 days, and only output one just have lost about 3500t, causes heavy losses.In addition, leaking also is the sign that cooling stave damages, the important symbol of blast furnace breakage especially.Therefore, understanding leak detection and the maintenance of blast furnace cooling stave, is all very important to doing blast furnace safety production well and extending the blast furnace life-span.
In maintaining blast furnace process; some blast furnaces, after discovery cooling stave damages, just shut the water coolant of this cooling stave, and result causes this cooling stave ablated or come off prematurely; make last furnace shell lose protection and directly be exposed in stove, and its adjacent cooling stave big area damage may be brought disaster to.And after finding that cooling stave damages, if do not close cooling stave water pipe, carry out jumper connection, then the cooling stave of downstream tandem may be caused to cause to damage because water-supply shortages, water temperature over-high, gas bubbles enter and expand.Make us recognize according to production experience for many years, take the treatment process shutting water coolant to be ill-considered without analyse without exception to the cooling stave damaged.In fact, after cooling stave damages, as long as find early, damaged condition is generally not too serious, and this just exists a problem how continuing to safeguard.
In airtight cooling recirculation system, enough large underheat temperature can ensure to be in forced convection or subcooled boiling heat transfer conditions between water coolant and cooling element inwall, unlikelyly surmounts foam boiling and reaches dangerous film boiling state.Under forced convection heat transfer state, cooling element wall does not generate bubble.Under subcooled boiling heat transfer conditions, cooling element wall there is a small amount of bubble formation, but taken away by the current of certain speed rapidly, and disappearance of breaking in far below the current stream stock of boiling temperature.The static pressure that keeping system inner cooling water is enough, namely keeps water coolant to have enough underheat temperature, just can ensure unlikely generation or accumulation bubble in system.
The leak detection of cooling stave is very important.If find the cooling stave that leaks in time, just leakage accident can be eliminated in rudiment, repair in minimizing, the frequency of overhaul and time, avoid cold wall of getting to damage and expand further, be conducive to extending the blast-furnace production campaign simultaneously.Current metallurgy industry passes through work summary and the accumulation of decades, have accumulated much effective judgement experience, and main leak hunting method is divided into artificial leak detection, instrument leak detection and online form three kinds of ways, gathers and is summarized as follows:
1, artificial leak detecting: the feature of system is got by the blast furnace unit that manually leak detecting is different according to respective blast furnace cold, explored effective economic and practical method with suiting measures to local conditions, having comprised:
Appearance method: seep water around observation furnace shell situation, and cooling water replenishment amount increases, and sudden and violent gas tank (pond) water quality is muddy, and last and suspended substance, occurs " white line " etc. in water, in conjunction with the feature of the circulating water of each factory, judge whether system leaks with a large amount of ash.
Methods of printing: open the detection valve be arranged on water return pipeline, whether igniting, observing has air scavenge and whether gas is flammable judges whether cooling stave leaks, and furnace gas enters in recirculated water.
Decompression method: reduce cooling stave intake pressure, when furnace pressure is greater than cold water intaking pressure, in stove, coal gas etc. go out to enter cold water intaking circulation from the breakage of cooling stave, cause vapour lock, intake limited, and a large amount of gas is discharged from outlet.
Suppress method: cut off water pipe before and after cooling stave under a cloud, pressure can be kept to judge by external pressurized observation, whether cooling stave is damaged, leakage.
Sampling system: by obtaining the water sample of water coolant, carry out water quality analysis to laboratory, analytical structure and the comparison of initial water sample sample, include but not limited to that the composition such as specific conductivity, sulfurous gas judges.
Although artificial leak hunting method complicated operation, each large smelting factory is similar, is all summaries of field work person's many years of experience, is the effective method be proved, and it is basis and the foundation of instrument method and other kinds method.
2, instrument method: instrument method grows up on artificial leak detection basis, and with the method that equipment replacement is artificial, leak locator main at present has pressure (differential pressure) method, discharge method, acoustic method, optical method and conductometric titration etc.Common instrument method instrument has:
Flow instrument, utilizes cold difference in flow of getting wall water inlet pipe and water outlet pipe to judge whether this cooling stave exists leakage.
Specific conductivity leak locator, after utilizing cooling staveleakage, water quality changes, and compares conductivity variations to judge with the soft water in water tank.
Optical method, utilizes probe to detect in water coolant because the water vapo(u)r bubble leaking the coal gas bubble that substitutes into or increase in temperature, localized hyperthermia causes judges whether to leak.
Ultrasonic leak detector: the leak detection instrument being a kind of maturation, but get wall system water pipe due to blast furnace cold and be positioned at cooling stave, cold wall of getting is positioned within furnace shell, not easily detects application.
Differential pressure method leak locator, utilizes differential pressure transmitter, reads the cold pressure reduction getting wall water inlet pipe and water outlet pipe and has judged whether that leakage point exists.
In the above-mentioned methods, no matter which kind of instrument all has the leak detection function differed in size, especially differential pressure meter and flow instrument, but because blast furnace operating mode is severe, cold wall quantity of getting is more, and the maintenance cost of a large amount of differential pressure transmitter and magnetic flow meter is expensive, is difficult to realize point-to-pointly implement to each block cooling stave, therefore these instrument adopt portable usually, both artificial discovery was leaked and is got rid of by instrument and determine.
3, online form method: online visor method is by the transparent sight glasses of serial or parallel connection in blast-furnace cooled water system, observe the change of water quality water level, by certain mechanism, simple feedback flow or differential pressure, be actually a kind of instrumentation devices of simplifying and technology, main at present have " non-return liquid flow display device " technology and the blast furnace of visual leakage detecting cooling wall " can " technology etc.Mainly comprise:
1, non-return liquid flow display device is a kind of pendulum plate visor be connected in circulating water system, pendulum strip preloaded spring, and swing plate shaft interlock pointer, utilizes the pendulum opening angle of plate and the relation of flow, indirect feedback flow.
2, can the blast furnace of visual leakage detecting cooling wall be utilize around blast furnace, to arrange a transparent pipeline, built-in float, judge a kind of overall technology of leakage point with the change of float.
Above-mentioned two kinds of technology, utilize the visuality of glass to observe and judgement is let out cold wall of getting and leaked, cannot solve because water quality causes fouling and the dirt of interior surfaces of glass, transparency is passed in time and declines, in addition the safe reliability of glass is too relied on, once break, have endless trouble.The former is series at pipeline, cannot on-bne repair and control, and the latter is overall blast-furnace technique, and transparent pipeline is longer, in place, safety and fund input, there is larger limitation.
By summing up a large amount of artificial leak detectings, instrument method and online form method, no matter we find that leak hunting method is all effective method, there is theoretical basis, having scientific basis.But the investigation a large amount of by the author and understanding, current domestic each big steel enterprise, does not have an online leak detection accomplishing to locate every block cooling stave, and international reports adopt differential pressure, the point-to-point online leakage alarm system of flow, set up huge electrical network and to carry out leakage alarm, but for number few.Most domestic enterprise still adopts artificial leak detection, gets rid of one by one, and the method reduced the scope is main, be auxiliary with all kinds of instrument detection method, artificial and the time of at substantial like this, extend the time of blast furnace staying maintenance, tremendous influence is caused to safety and production.
Summary of the invention
Technical problem to be solved by this invention is for the problems existing for blast furnace cooling stave leak hunting technology and provides a kind of blast furnace multi-functional water coolant positioning leakage inspector.This blast furnace multi-functional water coolant positioning leakage inspector can intuitively can react cold water intaking operation conditions at the scene, comprises water quality, temperature, pressure and gassiness situation; Remote transmission instrument function can be possessed, the functions such as temperature, pressure and warning are focused on master control room, meets the demand of modern industry centralized supervisory control; Possess safe and reliable, safeguard simple, the characteristic that running cost is cheap; Applicable different quality, distinct device can be provided to combine, the functional diversity of collocation unlike signal can be selected for vast smelting factory.It not only can provide solid foundation for the replacing of maintaining blast furnace and cooling stave, also can be other similar cooling apparatuss and provides effective leak-detecting means, get device, kiln water cooler etc. as hotblast stove is cold.
Technical problem to be solved by this invention can be achieved through the following technical solutions:
Blast-furnace cooled water positioning leakage inspector, comprising:
One is arranged on the housing on cooling stave water outlet, and the inside of described housing and described cooling stave water outlet link position is provided with a collection and confinement of gases chamber, is provided with the test chamber of a through described collection and confinement of gases chamber and described case top in described valve body;
One installs multifunction valve on the housing, and the valve body part of wherein said multifunction valve is positioned at described test chamber and is positioned at the top in described collection and confinement of gases chamber; Described multifunction valve has sampling, detects and blowdown three stations;
One installs temperature instrument on the housing, and the detection head of described temperature instrument is positioned at described test chamber;
One is arranged on the safety valve in described test chamber, and described safety valve is positioned at the top of the valve body of described multifunction valve;
Pair of brackets is on the housing installed;
By the glass vision panel cylinder on housing described in a form cylinder floor installation; Described glass vision panel cylinder is between described pair of brackets and it is inner by the through hole on form cylinder base and described test chamber UNICOM;
Float in mounting glass form cylinder, is provided with magnet in described float;
Be arranged on the end cap on described pair of brackets top, the top of described glass vision panel cylinder is connected with the sealed bottom of described end cap; Described end cap is provided with pressure instrumentation, exhaust-valve and cleaning driving handle, the inner of described cleaning handle is configured with worm gear, and outer end is configured with handle;
Be configured in the screw mandrel in described glass vision panel cylinder, the upper end of described screw mandrel is configured with one section of worm screw, and described worm screw engages with described worm gear;
One to be arranged on the cleaning brush on described leading screw by the screw engaged with described screw mandrel, described cleaning brush moves up and down along described screw mandrel and cleans the internal surface of glass vision panel cylinder;
Install teletransmission terminal base on the bracket, the output line of described temperature instrument and pressure instrumentation accesses described teletransmission terminal box;
The inductive switch of slide arrangement on teletransmission terminal box, the magnet that described inductive switch is followed in described float moves up and down, and the signal wire of this inductive switch accesses described teletransmission terminal box.
In a preferred embodiment of the invention, described support is provided with Liquid level scale, the axis being parallel of described Liquid level scale and described glass vision panel cylinder.
In a preferred embodiment of the invention, open a hole at the center of described float, described screw mandrel is through the hole at described float center.
The present invention can accomplish point-to-point reaction cooling stave state, directly effective, early stage visual data is provided to cooling stave, cold maintenance of getting the cold taking equipments such as device, thering is provided huge guarantee for smelting safety, at utmost reducing the maintenance cost of smelting cooling apparatus, creating objective economic benefit.
Accompanying drawing explanation
Fig. 1 is the schematic appearance of the multi-functional water coolant positioning leakage inspector of blast furnace of the present invention.
Fig. 2 is the right view of Fig. 1.
The vertical view of Fig. 3 Fig. 1.
Fig. 4 is the sectional view of the multi-functional water coolant positioning leakage inspector of blast furnace of the present invention.
Fig. 5 is the A-A sectional view of Fig. 4.
Fig. 6 is blast furnace of the present invention multi-functional water coolant positioning leakage inspector using state schematic diagram.
Embodiment
See Fig. 1 to Fig. 5, the blast-furnace cooled water positioning leakage inspector provided in figure, comprise one and be arranged on housing 100 on cooling stave water outlet, housing 100 is provided with a collection and confinement of gases chamber 110, test chamber 120, temperature instrument open holes 130, multifunction valve open holes 140 with the inside of cooling stave water outlet link position.Collection and confinement of gases chamber 110 is vaulted.
The threaded connector part of temperature instrument 200 is screwed in temperature instrument open holes 130, and its detection head is positioned at test chamber 120.Valve body part 310 in multifunction valve 300 and valve stem part 320 are arranged in test chamber 120 and multifunction valve open holes 140 respectively, wherein valve body part 310 is positioned at collection and confinement of gases chamber 110, and the end that valve stem part 320 stretches out housing 100 is provided with handle 330.Multifunction valve 300 has sampling, detects and blowdown three stations.
In testing cavity 120, be provided with a safety valve 400, safety valve 400 is positioned at the top of the valve body 310 of multifunction valve 300.
The central axis that housing 100 is symmetrical in housing 100 is provided with pair of brackets 500,500a, between pair of brackets 500,500a, be provided with a glass vision panel cylinder 600, the bottom of glass vision panel cylinder 600 is passed through on form cylinder base 610 holder housing 100 also by the through hole 611 on form cylinder base 610 and test chamber 120 UNICOM.
In glass vision panel cylinder 600, be provided with a float 620 can followed liquid level and fluctuate, be provided with magnet 621 in float 620, offer a hole 622 at the center of float 620.
Liquid level scale 510,510a is provided with in addition, the axis being parallel of Liquid level scale 510,510a and glass vision panel cylinder 600 on pair of brackets 500,500a.
Be provided with an end cap 630 at the top of pair of brackets 500,500a, the top of glass vision panel cylinder 600 is connected with the sealed bottom of end cap 630; Pressure instrumentation open holes 631, cleaning driving handle open holes 632, exhaust-valve open holes 633 and evacuation chamber 634 is provided with in end cap 630, coaxial and both the inner of pressure instrumentation open holes 631, cleaning driving handle open holes 632 and evacuation chamber 634 through, the inner of exhaust-valve open holes 633 is also through with evacuation chamber 634.
The thread head of pressure instrumentation 710 screws in pressure instrumentation open holes 631.Cleaning driving handle 720 is arranged in cleaning driving handle open holes 632, and its inner to extend in evacuation chamber 634 and is provided with a worm gear 730, and it is outer and be provided with one handle 740 that end cap 630 is extended in outer end.The thread head of exhaust-valve 900 screws in exhaust-valve open holes 633.
In glass vision panel cylinder 600, be provided with a screw mandrel 750, the top of screw mandrel 750 is provided with a worm screw 770, and worm screw 770 engages with worm gear 730.Screw mandrel 750 is rotary with a screw 780, screw 780 is provided with cleaning brush 790, cleaning driving handle 720 is rotated like this by handle 740, cleaning driving handle 720 rotate through worm gear 730, worm screw 770 drives screw mandrel 750 to rotate, screw mandrel 750 makes screw 780 drive cleaning brush 790 to move up and down, by clean for the inner wall washing of glass vision panel cylinder 600.
In order to the signal of temperature instrument 200 and pressure instrumentation 710 is sent to watch-keeping cubicle, support 500 is provided with a teletransmission terminal box 800, the signal wire of temperature instrument 200 and pressure instrumentation 710 is accessed teletransmission terminal box 800.In addition in order to liquid level signal is reached watch-keeping cubicle, teletransmission terminal box 800 is provided with an inductive switch 810, the magnet 621 that inductive switch 810 is followed in float 620 moves up and down, the signal wire access teletransmission terminal box 800 of this inductive switch 810.
See Fig. 6, the multi-functional water coolant positioning leakage inspector of blast furnace of the present invention is arranged on cooling apparatus (cooling stave, coldly get plate etc.) water outlet, by through the vault type collection and confinement of gases chamber 110 of optimization design and cooling apparatus (cooling stave, coldly get plate etc.) water outlet pipeline connects, water coolant is by vault type collection and confinement of gases chamber 110, through being in the multifunction valve 300 detecting position, arrive in glass vision panel cylinder 600, emptying by round valve 900 more than air in collection and confinement of gases chamber 110, make to be full of water coolant in glass vision panel cylinder 600, now pressure and temperature instrument shows real-time water coolant return water temperature and pressure, contrast inlet and outlet pressure, the known recirculated water of temperature is through the pressure reduction of cooling apparatus, temperature head.
Closed circulation system under normal circumstances, gas should not be produced in glass vision panel cylinder 600, when in cooling stave local, local produces bubble, cooling wall breakage causes water coolant to leak outside and produces gas-liquid exchange, both leaked in coal gas in air or stove while cold water intaking leaks outside, these gases are captured in vault type collection and confinement of gases chamber 110, glass vision panel cylinder 600 is entered by being in the multifunction valve 300 detecting position, assemble at glass vision panel cylinder 600 top because gas is lighter than water, transparent water and gas interface can be known by the glass vision panel cylinder 600 of special processing and show, and measure according to standard scale, when tolerance gathering tolerance reaches the alarm value of setting, by being arranged on, on-the-spot sensor is long-range provides alert signal.Now opening exhaust-valve 900 can carry out light-off trial at lighting-up tuyere or detect from evacuation port expellant gas whether coal gas with coal gas detector, be that coal gas represents in cooling stave and leaks (hot side is damaged); Not to be coal gas may be then, and cooling stave local is cold gets obstacle or leak outside (huyashi-chuuka (cold chinese-style noodles) is damaged).Observe in conjunction with the gentle amount of water quality and differentiated.Water quality is clear, tolerance is many and lasting, and form wall can be judged to be leak outside (huyashi-chuuka (cold chinese-style noodles) is damaged) without steam; Otherwise water quality is muddy, tolerance is few and gather slowly, then getting the cold obstacle of getting in wall local for cold, is the omen before hot side breakage.Cold water intaking pressure can be reduced if desired, though in leak outside, gas volume increases all thereupon.
In service water cooling system, by a certain amount of for long-term existence gas in glass vision panel cylinder 600, and unit time gas volume is identical, judges that possible leakage point exists when occurring that certain positioning leakage inspector tolerance increases severely then to need to combine.
Can read cold water intaking by the thermometric instrument being arranged on scene and flow through the temperature after cooling stave, judge cooling performance with this, and provide teletransmission temperature signal and warning by sensor.
Can read cold water intaking by the manometer being arranged on scene and flow through the pressure change after cooling apparatus, judge cooling performance with this, and provide teletransmission pressure signal and warning by sensor.
Due to water quality reason, during life-time service, glass vision panel cylinder 600 may produce fouling, obstacle is produced to observation water quality and gas content, now clean glass vision panel cylinder 600 by moving up and down cleaning brush 790, multifunction valve 300 rotation is caused blowdown sewage is discharged, open exhaust-valve 900 again, multifunction valve 300 is screwed into detection position and allows glass vision panel cylinder 600 again be full of water.
When needs carry out sampling detection to cold water intaking, multifunction valve 300 is screwed into sample position, and water coolant is directly discharged for detecting chemical examination from multifunction valve 300 without form.This multifunction is that intake or water filling port use.
When causing form to break because of extremes such as artificial collision, accidents, the security device momentary action of multifunction valve 300 inside, closes automatically, avoids water coolant excessive, and this function is the basis that positioning leakage inspector is applied.
The intuitive that the present invention is integrated with the various effectively artificial logicality of leak hunting method, the science of instrument method and form method is in the past integrated.Leak locator is independently arranged and outside piping system, is not needing to change cooling water pipeline system, be substituted into the sewage draining exit of original pipeline or detect mouth, there is feature that is directly perceived, accurate, safe, convenient and remote alarms.
The functions such as the temperature of this water coolant positioning leakage inspector, pressure and gas remote alarms carry out modular design, can carry out selectivity configuration according to the demand of different user and different cooling apparatus feature, applied widely.In daily blast furnace system, set up cooling stave coding and regular visit system, regularly on-the-spot by coded sequence and long-rangely inspect positioning leakage inspector, gather tolerance, temperature, pressure data, find as early as possible in time to damage cooling stave or cooling stave infringement omen, formulate maintenance, change cooling stave plan, at utmost reduce the shut-down trimming time, get final product the economic benefit of the at utmost interior equipment of creation unit time, can safeguard in advance again and avoid fault spread, at utmost extension device is suitable for the time limit, especially can extend the applicable time limit of the equipment such as steelmaking furnace, hotblast stove.
Cold wall positioning leakage inspector of getting changes traditional complicated leak hunting method, is not only applicable to steelmaking furnace, the cold taking equipment of hot blast stove system, adopts the cold cooling system getting wall, cooling plate and water cooler applicable equally to other.
Claims (3)
1. blast-furnace cooled water positioning leakage inspector, is characterized in that, comprising:
One is arranged on the housing on cooling stave water outlet, and the inside of described housing and described cooling stave water outlet link position is provided with a collection and confinement of gases chamber, is provided with the test chamber of a through described collection and confinement of gases chamber and described case top in described valve body;
One installs multifunction valve on the housing, and the valve body part of wherein said multifunction valve is positioned at described test chamber and is positioned at the top in described collection and confinement of gases chamber; Described multifunction valve has sampling, detects and blowdown three stations;
One installs temperature instrument on the housing, and the detection head of described temperature instrument is positioned at described test chamber;
One is arranged on the safety valve in described test chamber, and described safety valve is positioned at the top of the valve body of described multifunction valve;
Pair of brackets is on the housing installed;
By the glass vision panel cylinder on housing described in a form cylinder floor installation; Described glass vision panel cylinder is between described pair of brackets and it is inner by the through hole on form cylinder base and described test chamber UNICOM;
Float in mounting glass form cylinder, is provided with magnet in described float;
Be arranged on the end cap on described pair of brackets top, the top of described glass vision panel cylinder is connected with the sealed bottom of described end cap; Described end cap is provided with pressure instrumentation, exhaust-valve and cleaning driving handle, the inner of described cleaning handle is configured with worm gear, and outer end is configured with handle;
Be configured in the screw mandrel in described glass vision panel cylinder, the upper end of described screw mandrel is configured with one section of worm screw, and described worm screw engages with described worm gear;
One to be arranged on the cleaning brush on described leading screw by the screw engaged with described screw mandrel, described cleaning brush moves up and down along described screw mandrel and cleans the internal surface of glass vision panel cylinder;
Install teletransmission terminal base on the bracket, the output line of described temperature instrument and pressure instrumentation accesses described teletransmission terminal box;
The inductive switch of slide arrangement on teletransmission terminal box, the magnet that described inductive switch is followed in described float moves up and down, and the signal wire of this inductive switch accesses described teletransmission terminal box.
2. blast-furnace cooled water positioning leakage inspector as claimed in claim 1, is characterized in that, described support is provided with Liquid level scale, the axis being parallel of described Liquid level scale and described glass vision panel cylinder.
3. blast-furnace cooled water positioning leakage inspector as claimed in claim 1, is characterized in that, open a hole at the center of described float, and described screw mandrel is through the hole at described float center.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410293303.7A CN105200177B (en) | 2014-06-25 | 2014-06-25 | Blast-furnace cooled water positioning leakage inspector |
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|---|---|---|---|
| CN201410293303.7A CN105200177B (en) | 2014-06-25 | 2014-06-25 | Blast-furnace cooled water positioning leakage inspector |
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| CN105200177B CN105200177B (en) | 2017-07-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108220516A (en) * | 2017-12-11 | 2018-06-29 | 鞍钢股份有限公司 | A kind of method whether on-line checking blast-furnace tuyere damages |
| CN110643765A (en) * | 2019-03-15 | 2020-01-03 | 广东韶钢松山股份有限公司 | Online water-checking process for blast furnace cooling wall and water tank applied to process |
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| CN110643765A (en) * | 2019-03-15 | 2020-01-03 | 广东韶钢松山股份有限公司 | Online water-checking process for blast furnace cooling wall and water tank applied to process |
| CN110643765B (en) * | 2019-03-15 | 2022-01-11 | 广东韶钢松山股份有限公司 | Online water-checking process for blast furnace cooling wall and water tank applied to process |
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| Publication number | Publication date |
|---|---|
| CN105200177B (en) | 2017-07-28 |
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Effective date of registration: 20180425 Address after: 201506 jinliu Road, Jinshan Industrial Area, Jinshan District, Shanghai 877 Co-patentee after: Golden flow valve (Shanghai) Co., Ltd. Patentee after: Shanghai Goflow Moyer Fluid Technology Co., Ltd. Address before: 201506 room 1605, 4 Ting Wei Road, Jinshan Industrial Zone, Jinshan District, Shanghai, 6558 Patentee before: Golden flow valve (Shanghai) Co., Ltd. |