25results about "Cooling devices" patented technology

This invention provides an energy-saving blast furnace gas temperature regulation device, applied at the blast furnace gas outlet. It includes a gravity dust collector, a radiator, a dust collection bag, and a turbine. The gravity dust collector is connected at one end to the blast furnace gas outlet and at the other end to the radiator, used for preliminary removal of large particulate impurities from the blast furnace gas. The radiator is connected at one end to the gravity dust collector and at the other end to the dust collection bag, used to control the temperature of the blast furnace gas and prevent damage to the dust collection bag. The dust collection bag is connected at one end to the radiator and at the other end to the turbine, used to remove impurities from the blast furnace gas, completing the purification process. The turbine, connected to the dust collection bag, converts the pressure and thermal energy of the blast furnace gas into rotational mechanical energy to drive a generator. This invention effectively regulates the temperature of the blast furnace gas, simultaneously treating the gas and enabling its recycling.

This invention belongs to the field of blast furnace operation and longevity technology, and relates to a combined cooling structure and cooling process for stabilizing the internal shape of a blast furnace belly. The combined cooling structure includes: a belly cooling wall, continuously arranged circumferentially along the inner side of the furnace shell, with its hot surface protruding inwards, such that the hot surfaces of multiple belly cooling walls together form a continuous inclined plane consistent with the designed belly angle α; a first cooling plate layer, continuously arranged circumferentially along the lower part of the belly cooling wall, and extending radially in the blast furnace to cover the lower end of the belly cooling wall; and a second cooling plate layer, composed of multiple second cooling plates arranged below the first cooling plate layer. This invention, through its innovative structural design of the hot surface of the belly cooling wall protruding inwards and the continuous arrangement of the first cooling plate layer forming a protective eave, solves the problem of internal shape instability caused by changes in refractory or slag thickness.

This application discloses a device for treating blockages in cooling wall water pipes. The device includes: a first tee pipe having a fourth, fifth, and sixth pipe, wherein the fourth pipe is connected to the flow channel of the first pipe, the fifth pipe is connected to the flow channel of the third pipe, and the sixth pipe is located between the fourth and fifth pipes; a second tee pipe having a seventh, eighth, and ninth pipe, wherein the seventh pipe is connected to the sixth pipe, the ninth pipe is connected to the second pipe, and the ninth pipe is located between the seventh and eighth pipes; a first shut-off valve located on the eighth pipe for controlling the on / off state of the eighth pipe; and a second shut-off valve located on the ninth pipe for controlling the on / off state of the ninth pipe.

A cooling method for super-large blast furnaces during maintenance shutdowns involves intermittently spraying water from cross-shaped temperature measuring holes and tuyere water guns inserted into the tuyere outlets after the furnace is shut down. The water spraying method is monitored and controlled in stages to effectively cool the remaining coke surface in the hearth. Throughout the process, the water volume is rationally controlled based on a series of collected parameters, including gas temperature, gas concentration, and coke surface temperature. The installed water guns and tuyere water guns have atomizing spraying functions, working in conjunction with pre-set top water guns to spray water onto the coke surface in the center of the hearth for cooling. This invention implements intermittent water spraying cooling by collecting multiple parameters. This invention not only achieves coke cooling, creating safe working conditions for furnace construction, but also avoids damage to the carbon bricks caused by excessive water contact with the cooling water. Furthermore, it creates favorable conditions for cleaning broken coke from the hearth before furnace restart.

The present disclosure discloses a system (500) for measuring thickness along a length of a conduit (111). The system includes a guide tube and a device (300) positioned in the guide tube (370). The device is configured to displace along the guide tube into the conduit. The device includes a plurality of links (100) pivotally connected to each other. Further, at least one carrier link (304) is positioned between at least a pair of the plurality of links and is configured to accommodate at least one sensor (340). Additionally, at least one protrusion (330) extends from the at least one carrier link and is configured to support a portion of the at least one sensor, to contact the conduit for measuring thickness of the conduit. Furthermore, a control unit (400) is communicatively coupled to the device (300) to operate the device and measure thickness along the length of the conduit.

The utility model discloses a kind of furnace top water beating water leakage prevention freeze-proof device, belong to blast furnace equipment field, including the furnace top water beating pipeline arranged from the upward extension of blast furnace bottom, electric valve for controlling water beating is provided on the furnace top water beating pipeline at blast furnace top, drain total valve is provided at the place below furnace top water beating pipeline electric valve, three-way pipeline is provided between drain total valve and electric valve, drain valve is provided on three-way pipeline, three-way pipeline is connected to water leakage processing place.The utility model can solve the problem that a small amount of water remaining in water beating pipeline leaks into furnace, which is not only harmful to furnace condition but also causes water waste, and can conveniently drain water from the pipeline, eliminating the risk of trace leakage and freeze cracking.

This utility model discloses a blast furnace hot blast stove cooling water system based on a closed-loop soft water circulation system, including a blast furnace cooling module and a hot blast stove cooling module. The blast furnace cooling module, from the cooling wall outlet to the inlet of the blast furnace body, sequentially includes a main water collection pipe, a degassing tank, an expansion tank, an air cooler, a soft water pump, and a main measuring component. The hot blast stove cooling module, along the soft water flow direction, sequentially includes a main inlet valve, an automatic interlocking pump assembly, a primary measuring component, a cooling submodule, another primary measuring component, and a main outlet valve. The main inlet valve connects the main measuring component and the cooling wall inlet of the blast furnace body, and the main outlet valve is connected to the outlet end of the main water collection pipe via a return water pipe. The cooling submodule includes multiple cooling units connected in parallel. This system effectively improves the water quality of the hot blast stove cooling water, reduces scaling and corrosion rates, and avoids the impact of equipment replacement on production.

A kind of accurate judgment and automatic recovery system and method of blast furnace airtight tank water seal flush open.The present application has the beneficial effects that:the present application realizes the "unmanned" full-automatic processing of water seal flush open accident, personnel need not enter high-risk coal gas area, fundamentally avoids the risk of coal gas poisoning, greatly improves the safety;At the same time, from millisecond level data acquisition judgment to second level automatic execution, the response speed can be shortened by several tens of minutes compared with manual processing, and the accident risk window is reduced to the minimum;Through the accurate feedback of flow sensor and the intelligent control algorithm of central control unit, manual experience judgment is replaced, so that the water seal recovery process is more accurate and reliable, the recovery success rate is high and stable, and repeated failure caused by improper operation is avoided;In addition, the system automatically records all time, data and operation steps of the event and generates a report, has strong traceability, provides data support for equipment management and optimization, and has wide industrial practical value.

The present application relates to iron-making technology field, propose a kind of for vanadium-titanium magnetite smelting blast furnace hearth structure and cooling control method, the blast furnace structure includes furnace bottom brick lining, hearth side wall brick lining and be located in the hearth side wall brick lining below furnace base;Furnace bottom brick lining and the outside of the hearth side wall brick lining is provided with smooth cast iron cooling wall, the inside of the furnace base is provided with cooling device;The furnace bottom brick lining is successively provided with heat preservation brick layer and heat-conducting brick layer from hearth bottom to furnace base direction, heat preservation brick layer includes dense clay brick and composite mullite brick, the heat-conducting brick layer is semi-graphite carbon brick;Hearth side wall brick lining is built with the composite mullite brick, and in the corner of hearth and furnace bottom, hearth side wall brick lining extends to form brick lining reinforcing structure in the direction of furnace in.The present application solves the problem of excessive deposition of titanium carbonitride caused by improper temperature gradient when smelting vanadium-titanium magnetite, inhibits the accumulation of hearth center and edge bonding, maintains the hearth active and blast furnace smooth.

The utility model discloses a blast furnace soft pure ring water cooling system belongs to smelting equipment cooling technical field. Include: spray cooling system, is formed by spray hot pool and spray cold pool, and the spray water of spray cold pool is used to carry out heat exchange to the air -cooling pipe of soft water system, and the spray water after heat exchange is returned to spray cold pool after cooling through first cooling tower, forms spray water closed loop, pure ring water system, including pure ring water pool, and the pure ring water in pure ring water pool supplies blast furnace user cooling use, and the pure ring water of temperature rise after use is returned to first cooling tower and is cooled through backwater pipeline again, and is returned to pure ring water pool through drain pipeline, forms pure ring water independent loop. Cool the soft water system through spray cooling system, avoid the pure ring water pool to maintain at higher temperature for a long time because of soft water temperature is higher, can better satisfy the cooling requirement of soft water system, TRT, direct current furnace roof and other key equipment, guarantees relevant equipment can keep normal operation for a long time.

A kind of blast furnace lining forced cooling device, including cooling wall, cooling wall is arranged between blast furnace shell and lining, the cooling wall is welded by upper cylinder, middle cylinder and lower cylinder, the inner side surface of cooling wall is adapted with the outer surface of blast furnace lining.Spray cooling is implemented to cooling wall by a circle of spray head that is arranged obliquely in the lower side of circular ring water pipe, cooling water can quickly flow down the outer surface of entire cooling wall, to implement forced cooling operation to blast furnace lining;The outer side surface of cooling wall is equipped with staggered flow guide plate, can make cooling water quickly and evenly flow through the outer surface of cooling wall;The outer side surface of cooling wall is equipped with temperature sensor that is uniformly arranged in position, the temperature of blast furnace lining can be detected in real time by temperature sensor when some local position of blast furnace lining is larger, when heat load, the spray head above this heating position can be opened alone to carry out local cooling operation, improve the dynamic adjustment cooling effect of cooling wall.

A heat preservation method for a blast furnace hearth masonry construction belongs to the technical field of iron-making blast furnace masonry construction. The method comprises the following steps: S1. confirming the preconditions for the hearth refractory masonry construction: A. the construction hoistway for the hearth masonry construction is installed, and the hearth forms a relatively closed construction space; B. a thermometer is arranged in the hearth; C. the hearth cooling wall has water supply conditions; D. the hearth cooling wall body temperature measuring thermocouple is installed; S2. hot medium is supplied to the hearth cooling system loop, and the hearth cooling wall body temperature is controlled to be 40-70 DEG C; S3. the hot medium flow, temperature or tuyere cold air inlet amount supplied to the hearth cooling system loop is regulated and controlled, the hearth cooling wall body temperature is controlled, and the construction environment temperature in the hearth is controlled to be 5-40 DEG C. During the hearth masonry construction, the heated medium is supplied to the hearth circulating cooling water system, the hearth cooling wall temporarily plays the role of a heating radiator, the operation cost is low, the operation is simple, and the effect is good.

A system for measuring a thickness of a cooling plate, including a probe holder unit designed to fit inside a coolant channel of the cooling plate, the probe holder unit having a housing extending along a length axis, an ultrasonic probe being arranged in the housing to be able to transmit and receive ultrasonic waves from a sensor side, a rear housing part being moveably arranged at the rear side, transversally to the length axis, and elastically biased away from the sensor side, thereby permitting the probe holder unit to adapt to the cooling channel size, a drive chain to assist the progression of the probe holder unit through the length of the coolant channel, the drive chain linked to first connecting means at the first end of the housing, where a cable assembly includes electric wires connects the ultrasound probe, and an encoder arrangement is configured to cooperate with the drive chain such as to measure a length of drive chain passing along it, the encoder arrangement having a first gear meshing with the drive chain and coupled to an encoder.

The present invention relates to a gas injection system for a blast furnace, shaft furnace, or metallurgical furnace having a furnace wall (12) and a cooling plate (18), the gas injection system comprising a gas distribution pipe (14) and one or more injectors (16) having a nozzle, the nozzle having a ceramic insert (52), a cooling element (18) having a hot side facing away from the furnace wall (12), a protrusion (54) attached to the hot side of the cooling plate, the ceramic insert (52) traversing the furnace wall and the cooling plate and the protrusion on the cooling plate, the ceramic insert (52) having an adaptable length so that the ceramic insert (52) protrudes into the furnace, is flush with the hot surface of the cooling plate (18), or is slightly recessed from the hot surface of the cooling plate (18).

A method for operating a blast furnace plant that includes a blast furnace, at least one material hopper for charging raw materials to the blast furnace, having a upper seal valve and a lower seal valve, and at least one hot stove that produces hot blast for the blast furnace, the method including at least one charging cycle with the following steps: opening the upper seal valve, introducing raw materials into the material hopper, closing the upper seal valve, pressure equalization of the material hopper with blast furnace top pressure, and opening the lower seal valve to discharge raw materials into the blast furnace, wherein, in order to provide a cost-effective way to minimize the explosion danger during operation of a top charging system, an offgas from the at least one hot stove is transferred by a transfer system to the at least one material hopper and, before the lower seal valve is opened, the offgas is injected into the material hopper.

The present application belongs to the technical field of steel metallurgy, and particularly relates to a method for quickly repairing the furnace type of a cooling plate blast furnace in the later stage of the furnace campaign, comprising the following contents: (1) shortening the maintenance period: the maintenance period is shortened from the normal 4-5 months to 2-3 months; (2) furnace shell hole: taking advantage of the opportunity of the regular inspection, a grouting hole is arranged at the position where the cooling shield cracks and the furnace shell cracks; (3) dredging the grouting hole: after the ball valve of the grouting hole is removed, the electric hammer is used to dredge the residual refractory or slag shell in the furnace; (4) grouting and pressing into the material: taking advantage of the opportunity of the regular inspection, the prepared hard pressing material is pressed into the furnace through the new grouting hole and the old grouting hole by using the grouting machine; (5) controlling the airflow: after the air supply is maintained, the charging system is optimized, and the platform of the ore and coke is widened at the same time; (6) extending the maintenance time: the maintenance time is extended to more than 28 hours. The method improves the quality of the hard pressing, makes the hard pressing material stay in the furnace for a long time, and extends the stable operation period of the furnace type.

The utility model discloses an effective energy -conserving blast furnace smelting additive conveying device, including conveying frame and water tank, the transmission belt is installed in conveying frame, and the one side fixed mounting of conveying frame bottom is equipped with the support, and the water tank is fixedly installed in conveying frame bottom through the support, and the fixed mounting of several groups of collection tray is located in conveying frame inner wall and transmission belt inboard, and the fixed mounting of branch pipe is located in conveying frame inner wall and each group collection tray top, and the fixed mounting of several groups of cooling nozzles is located in branch pipe top, and the fixed mounting of water outlet is located in collection tray front end, and the fixed mounting of recovery pipe is located in conveying frame side wall and each group water outlet connection, and recovery pipe tail end inserts in the water tank, and the fixed mounting of water supply pipe is located in conveying frame side wall and recovery pipe top, and each group branch pipe is connected with water supply pipe, and water supply pipe tail end sets up in the water tank.

A stave protection system for a metallurgical furnace comprises: a stave (100) comprising a plurality of recesses (110) arranged on a front face (102) of the stave (100); and a plurality of inserts (200) each being received by a respective one of the recesses (110), the inserts (200) so received projecting from the front face (102) of the stave (100) such that, in use, furnace burden material is trapped by the inserts (200) so as to provide a protective layer of the burden material on the front face (102) of the stave (100). Each insert (200) comprises a set of segments (202a-f) and a retainer which forces the segments (202a-f) against a surface (110b) of the respective recess (110), such that the segments (202a-f) are secured in the recess (110) by frictional contact with the surface (110b) of the recess (110).

This invention relates to the field of blast furnace cooling systems, specifically to a cooling system and intelligent control method for high heat load zones in blast furnaces. The system includes: cooling walls, refractory bricks, copper cooling elements, a composite packing layer, and an intelligent control unit. Copper cooling elements are spaced apart in the gaps between adjacent cooling wall sections, with the hot surfaces of the copper cooling elements receding inwards relative to the hot surfaces of the cooling walls. The composite packing layer fills the gaps between the copper cooling elements and the cooling walls, comprising a high thermal conductivity packing area and a low thermal conductivity packing area. The high thermal conductivity packing area is located at the mating gap between the copper cooling elements and the cooling walls, while the low thermal conductivity packing area is located on the hot surface side of the copper cooling elements. The intelligent control unit acquires slag skin condition information from the slag skin adhesion zone and dynamically adjusts the cooling parameters flowing through the copper cooling elements based on this information. This invention can improve system heat transfer efficiency and achieve proactive and precise control of slag skin thickness and long-term stability of the blast furnace internal structure.

The present application relates to a kind of blast furnace shaft cooling structure and its construction method, the cooling structure includes furnace shell, cooling wall, inner lining and multiple cooling plate, cooling plate sequentially passes first through the hole on furnace shell and second through the hole on cooling wall and is inserted into inner lining, each first through the hole and each second through the hole are blocked by sealing material respectively, the gap area between furnace shell and cooling wall is formed gap filling layer by pouring first castable, and inner lining is formed by pouring second castable on the hot face side of cooling wall.The present application can significantly reduce interface thermal resistance by the way of pouring castable whole pouring, forms efficient heat transfer path to make the working temperature of inner lining material greatly reduce;Pouring forming inner lining has excellent overall structural strength, interface bonding force is strong, and is not easy to fall off, to effectively protect cooling equipment continuously.The present application realizes the partition whole pouring of gap filling layer and inner lining, improves the integrity and structural strength of refractory, reduces construction difficulty, can significantly improve construction speed, save construction cost.

The utility model discloses a blast furnace ironmaking air inlet device with cooling structure, including base and the air inlet pipe of setting in the upper portion of base, the outer surface of air inlet pipe is fixedly connected with the outer layer cylinder along its length direction, and the cavity of tubular is formed between the outer surface of outer layer cylinder and air inlet pipe, and the inside of cavity is fixedly connected with a plurality of partition rings evenly and interval along its length direction, the utility model relates to blast furnace ironmaking technical field. This blast furnace ironmaking air inlet device with cooling structure, through setting up outer layer cylinder and a plurality of partition rings, this device fixes outer layer cylinder on the outer surface of air inlet pipe, and installs a plurality of partition rings in its inside, and the cavity between outer layer cylinder and air inlet pipe is divided and forms a plurality of annular heat exchange cavities, then through a plurality of liquid inlet branch pipes and a plurality of liquid outlet branch pipes respectively to a plurality of heat exchange cavities inside conveying and discharging heat exchange fluid, by this can guarantee that the whole pipe body of air inlet pipe is evenly cooled, and the phenomenon that temperature distribution is uneven will not appear.

The application discloses a cooling wall for a vanadium-titanium blast furnace and a construction method thereof, and belongs to the technical field of design and manufacture of metallurgical production equipment accessories. The application provides the cooling wall for the vanadium-titanium blast furnace and the construction method thereof, which have obviously improved strength and excellent deformation resistance. The cooling wall structure comprises the cooling wall and cooling water pipes embedded in the cooling wall. The cooling wall is composed of copper plates, and at least on the surface of the side of the cooling wall close to the vanadium-titanium blast furnace body, a wear-resistant and heat-insulating metal ceramic composite layer is arranged. The construction method comprises the following steps: firstly, the hot surface of the copper plate is pretreated; then, a transition layer is formed by spraying a NiCr or NiAl bonding layer on the hot surface of the copper plate which has passed the pretreatment; then, a working layer is formed by arranging a Cr3C2-NiCr or WC-Co metal ceramic gradient coating layer on the transition layer; finally, the preparation of the cooling wall is completed by adopting a laser remelting process to eliminate the layered structure and block the pores, or adopting a hot isostatic pressing process to improve the density and the bonding force of the coating layer.