CN112359158B - Circulating water cooling device, blast furnace distributor and water supply method thereof - Google Patents
Circulating water cooling device, blast furnace distributor and water supply method thereof Download PDFInfo
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- CN112359158B CN112359158B CN202011443942.9A CN202011443942A CN112359158B CN 112359158 B CN112359158 B CN 112359158B CN 202011443942 A CN202011443942 A CN 202011443942A CN 112359158 B CN112359158 B CN 112359158B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/18—Bell-and-hopper arrangements
- C21B7/20—Bell-and-hopper arrangements with appliances for distributing the burden
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
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Abstract
The invention relates to a circulating water cooling device, a blast furnace distributor and a water supply method thereof, belonging to the field of blast furnaces. Through set up water distributor and rotatory section of thick bamboo together on rotatory section of thick bamboo, set up flexible nest of tubes in the distributing device casing, when flexible nest of tubes rotates to flexible nest of tubes relative position, flexible nest of tubes and water distributor group synchronous rotation and carry out water supply and return water for a period of time through the corresponding UNICOM of female joint and male joint, connect after accomplishing one section water supply and return water and extract and get back to waiting the machine position, through the combination of flexible nest of tubes and water distributor group of different quantity, can realize the rotatory section of thick bamboo continuous zone pressure circulation water supply cooling. The scheme avoids the problems of unreliability and difficult maintenance of using a large rotary joint; meanwhile, the local plug connector is reliable in sealing, and compared with a large water tank adopting a labyrinth air seal structure, the water tank not only avoids a large number of water leakage problems, but also is convenient to replace and maintain.
Description
Technical Field
The invention belongs to the field of blast furnaces, and particularly relates to a circulating water cooling device suitable for a blast furnace distributor, the blast furnace distributor with the circulating water cooling device and a method for circularly supplying water to the blast furnace distributor.
Background
Blast furnace bell-less top distributors are traditionally called "water-cooled gearboxes" because they are throat devices connecting the top and the blast furnace, and although some types of distributors do not currently employ gear structures, cooling, particularly water cooling, of the internal drive mechanisms of the distributors has been known.
At present, the water cooling structure of the distributing device has two forms of an open type and a closed type.
Conventional open water cooling forms are described in various documents, such as China's document "study of blast furnace bell-less top water cooled distribution chute drive gearbox" (university of northeast, shuin paper) 1.3.4.3 and the structures disclosed in FIGS. 1.19 and 1.20. The structure is characterized in that an upper water tank rotating along with the rotary drum is arranged at the upper part of the distributor shell, water is supplied by the pipeline of the upper water tank aligned with the distributor shell, and naturally flows downwards from the upper water tank to the rotary drum and a transmission mechanism arranged on the rotary drum due to gravity, and after cooling, the water flows into a fixed lower water tank below the distributor shell from a water outlet of a chassis at the lower part of the rotary drum.
Such a structure and various modified structures based on such a structure have the following problems:
(1) The waterway has no pressure, the cooling effect is poor, and the water consumption is large; (2) The waterway flow between the rotary drum and the distributor housing cannot be completely sealed, so that lubricating oil in the transmission structure (on the rotary drum) and dust from the blast furnace easily enter the waterway; (3) Due to unstable pressure control of the blast furnace and the distributor, a large amount of water leaks into the blast furnace, and even the blast furnace is frequently shut down for damping down and overhauling.
Based on improvements to traditional open water cooling, closed water cooling forms, also known as "closed water circulation systems" or "pressurized water cooling systems", have become popular in recent years. The Chinese patent 201080038163.9 is an annular rotary joint water supply and return structure, mainly uses a lower water tank in a traditional scheme to concentrate on an upper water tank as a return water loop, uses the return water loop as an annular tank (pipe) to be sleeved in an annular cavity of the upper water tank and to perform certain pressure isolation, and adopts a labyrinth-like sealing structure at the upper part of the upper water tank and to perform integral sealing by pressurized gas.
However, such a structure has the following problems:
(1) The structure is influenced by the size of the throat pipe of the distributor, and is always a large rotary joint structure, and the reliability problem of the large rotary structure is acknowledged in the industry; (2) In order to isolate dust and greasy dirt in the distributing device, the labyrinth structure is almost contacted, thus the processing cost is increased, and nevertheless, just like the problem of the traditional labyrinth structure, the leakage condition is not completely avoided; (3) The backwater annular box is arranged in the upper water tank and is provided with a sealing piece, so that the structure is very difficult to replace and maintain; (4) Due to the above structure, the pressure of water is limited, and the water pressure is increased to be more likely to leak.
The chinese patent 201180007114.3 adopts a smaller rotary joint structure, in which a rotary joint is installed on the device above a distributor to supply water and return water, the inner ring of the rotary joint is provided with a shaft rod to hang the central throat of the distributor, and the central throat and the rotary barrel of the distributor rotate together.
Such a structure improves the reliability and maintainability of the rotary joint, but brings about problems in that:
(1) The distributor is connected with other devices in series, so that the complexity of a device interface is brought; (2) In order to meet the requirements of structural arrangement and material flow of the furnace top, the distance from the distributor to the rotary joint is several meters away, concentricity of the rotary joint and the distributor is required to be ensured, and the difficulty of processing and equipment installation is improved; (3) Because the original fixed central throat is used for playing with moving parts, the equipment is additionally provided with fault points, and in addition, the central throat is a vulnerable part, and the new structure makes the replacement operation more complex.
Disclosure of Invention
In view of the above, the present invention aims to provide a circulating water cooling device suitable for a blast furnace distributor, a blast furnace distributor with the circulating water cooling device, and a method for circulating water supply to the blast furnace distributor, so as to achieve the effects of reliable sealing, reduced manufacturing difficulty, and convenient installation and maintenance.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the circulating water cooling device suitable for the blast furnace distributor comprises a water cooling pump station, a water distributor group and a telescopic pipe group; wherein the water distribution group comprises two independent water channels, one port of each water channel is connected with a female joint, the other port of each water channel is connected with a water cooling channel arranged in the rotary cylinder through a distribution water pipe; the telescopic pipe group comprises two telescopic pipes which are independently arranged, one port of each telescopic pipe is connected with a male joint, and the other port of each telescopic pipe is connected with the water-cooling pump station through a water hose; the two telescopic pipes in the telescopic pipe group are electrically connected with the plug power source and the telescopic state of the telescopic pipe group is controlled by the plug power source, and under the extending state, the two male connectors on the telescopic pipe group are correspondingly matched and communicated with the two female connectors in the water distribution group to form a water cooling channel capable of circulating.
Further, the device also comprises a deflection driving mechanism which mainly comprises a deflection power source, and a driving gear and a driven gear which are meshed with each other; the driving gear is arranged at the output end of the deflection power source, and two telescopic pipes in the telescopic pipe group are arranged on the driven gear through the mounting frame and driven by the driven gear to deflect.
Further, a supporting chute is arranged on the mounting frame and is clamped on the guide supporting rail so that the deflected mounting frame rotates along the guide supporting rail.
Further, the female connector and the male connector which are arranged in a matched mode are double-stop valve quick connectors.
A blast furnace distributor comprises a distributor shell, a rotary drum, a rotary shaft and a rotary shaft, wherein the rotary drum is hung inside the distributor shell and is coaxially arranged with a central axis of a blast furnace; the circulating water cooling device is characterized by further comprising the circulating water cooling device, wherein the guide support rail is an arc rail and is coaxially arranged on the periphery of the rotary drum.
Further, the water distribution groups are at least three groups and are uniformly distributed around the circumference of the rotary cylinder; at least two telescopic tube sets are arranged on the periphery of the rotary cylinder and matched with the water distribution set.
Further, the guide support rail is a circular ring rail which is fixedly arranged on the distributor shell; the mounting frames in the telescopic tube groups are all arranged on the circular ring rail.
Further, the deflection driving mechanisms are matched with the telescopic pipe groups in number to realize one-to-one correspondence control, and deflection power sources in the deflection driving mechanisms are fixedly arranged on the distributor shell.
A water supply method suitable for a blast furnace distributor mainly comprises the following steps:
s1: the telescopic pipe group is positioned at the waiting position, the telescopic pipe is in a retracted state and does not interfere the water dispenser group to perform rotary motion along with the rotary cylinder;
s2: when the water dispenser group rotates to be close to the vicinity of the telescopic tube group, the deflection driving mechanism is started to drive the telescopic tube group to do angular acceleration movement in the same direction as the water dispenser group;
s3: when the angular velocity of the telescopic pipe group is accelerated to be the same as that of the water dispenser group, the male joint and the female joint are in a state of being in face-to-face alignment, namely the telescopic pipe group and the water dispenser group synchronously rotate;
s4: when the telescopic pipe group and the water dispenser group start to synchronously rotate, a plug power source for controlling the telescopic pipes is started, the two telescopic pipes and the male connector on the telescopic pipe group are simultaneously pushed towards the opposite female connector, after the female connector and the valve core in the male connector are mutually jacked, one of the two telescopic pipes in the telescopic pipe group is used as a water inlet pipe, the other telescopic pipe is used as a water outlet pipe, and the two telescopic pipes are simultaneously communicated with the water cooling channels in the corresponding rotating cylinders to form a circulating loop comprising water supply and water return;
s5: the water supply and return process is continued until the telescopic pipe group synchronously rotates to the vicinity of the limit;
s6: when the telescopic pipe group moves to the vicinity of the limit position, the telescopic pipe is pulled out, and the water supply is finished;
s7: the telescopic pipe group reversely rotates back to the waiting machine position to prepare for the next water supply and return operation.
Further, the plurality of telescopic tube sets are matched with the plurality of water dispenser sets, when a certain telescopic tube set is matched with a certain water dispenser to supply water, other telescopic tube sets are positioned at the waiting position, and when the telescopic tube set for supplying water ends the water supply, the other telescopic tube sets are just matched with other water dispenser sets to supply water.
The invention has the beneficial effects that:
1. the telescopic pipe group and the water distribution group are respectively provided with the double stop valve quick connectors for time-sharing and intermittent plug-in water supply and water return, so that the use of a large-sized water tank and water tank structure is avoided, the sealing of the large-sized water tank and the water tank is avoided, the reliability of the water supply device is improved, and the manufacturing difficulty is reduced.
2. The quick connector is adopted locally, the structure of the connector is small, the sealing is reliable, the complete sealing connection of the waterway is realized, and therefore, the isolation of oil water, dust and water is completely realized.
3. Because the sealing reliability is improved, the water pressure can be further improved, the pressure of the double-stop valve quick connector can be generally used to be tens of MPa or even tens of MPa, the water pressure can be improved to bring the flow velocity of cooling water, and the cooling heat exchange efficiency is enhanced.
4. By the number combination of the telescopic tube group and the water distributor group, the alternating continuous water supply to the rotary drum is realized.
5. The water supply and return devices are small structures arranged locally, the design and arrangement modes are flexible, the structure of the distributing device is hardly modified, the cross connection of a moving mechanism between a rotary joint and equipment arranged on other equipment is avoided, and the whole overhaul and maintenance of furnace top equipment are convenient.
6. In the driving control of the telescopic tube group, a structure of matching a guide supporting rail and a supporting chute is adopted, so that a large bearing structure is avoided, and the telescopic tube group is simple to manufacture and low in cost; meanwhile, the rotation driven by the gears and the insertion and extraction driven by the hydraulic cylinders are respectively controlled, so that the whole control system is simpler and more reliable.
7. The water supply device is protected by the protective cover and the protective plate, so that oil pollution and dust pollution are prevented, and structural work failure is avoided; the local fixed protection cover not only saves the manufacturing cost, but also saves the overhaul and maintenance space in the distributor.
8. The scheme is also completely feasible (for example, lubricating grease is provided for a tilting mechanism arranged on the rotary drum) for providing other fluid media for the rotary drum of the distributing device, and only a telescopic pipe is needed to be added at the telescopic pipe group, a medium pipeline and a double-stop valve quick connector for corresponding connection are needed to be additionally arranged at the water distributor group; the independence of the movement mechanism in the embodiment adopts an independent control strategy, and the connection and disconnection interval time of the fluid medium can be different from the water supply interval time.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and other advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in the following preferred detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view showing a semi-sectional structure of a blast furnace distributor with a circulating water cooling device;
FIG. 2 is an enlarged view of section I of FIG. 1;
FIG. 3 is an isometric view of a blast furnace distributor with a circulating water cooling apparatus;
fig. 4 is a motion trajectory diagram of the telescopic tube group.
Reference numerals:
the automatic feeding device comprises a distributing device shell 1, a rotary cylinder 2, a water distribution group 3, a double-stop valve quick connector 4, a telescopic tube group 5, a deflection driving mechanism 6, a plug power source 7, a fixed protection cover 8, a rotary protection plate 9, a water cooling pump station 10 and a blast furnace 11;
in the water dispenser group: a distribution water pipe 301, a distribution water pipe 302, a water passage 303, and a water passage 304;
in the double-stop valve quick connector: a female joint 401 and a male joint 402;
in the telescopic tube group: a guide support rail 501, a support chute 502, a telescopic tube 503, a telescopic tube 504 and a mounting frame 505;
in the deflection driving mechanism: a yaw power source 601, a driving gear 602, and a driven gear 603;
a central axis AO of the blast furnace; a water cooling channel T; a water hose FP01, a water hose FP02; water dispenser group (one) WG01, water dispenser group (two) WG02, water dispenser group (three) WG03; a telescopic pipe group (one) EG01 and a telescopic pipe group (two) EG02.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the illustrations provided in the following embodiments merely illustrate the basic idea of the present invention by way of illustration, and the following embodiments and features in the embodiments may be combined with each other without conflict.
Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to limit the invention; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numbers in the drawings of embodiments of the invention correspond to the same or similar components; in the description of the present invention, it should be understood that, if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc., that indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but not for indicating or suggesting that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and should not be construed as limiting the present invention, and that the specific meaning of the above terms may be understood by those of ordinary skill in the art according to the specific circumstances.
Referring to fig. 1 to 3, a circulating water cooling device suitable for a blast furnace distributor comprises a water cooling pump station 10, a water distribution group 3 and a telescopic pipe group 5; wherein the water distributor group 3 comprises two independently arranged water channels 303 and 304, one ports of the water channels 303 and 304 are connected with a female joint 401, the other port of the water channel 303 is connected with a water cooling channel T arranged in the rotary cylinder 2 through a distribution water pipe 302, and the other port of the water channel 304 is connected with the water cooling channel T arranged in the rotary cylinder 2 through the distribution water pipe 301; the telescopic pipe group 5 comprises two telescopic pipes 504 and 503 which are independently arranged, one port of each telescopic pipe 504 and 503 is connected with a male joint 402, the other port of the telescopic pipe 504 is connected with the water-cooled pump station 10 through a water hose FP02, and the other port of the telescopic pipe 503 is connected with the water-cooled pump station 10 through a water hose FP 01; the two telescopic pipes in the telescopic pipe group 5 are electrically connected with the plugging power source 7 and the telescopic state of the telescopic pipe group is controlled by the plugging power source 7, and in the extending state, the two male connectors 402 on the telescopic pipe group 5 are correspondingly matched and communicated with the two female connectors 401 in the water dispenser group 3 to form a water cooling channel capable of circulating. The female connector 401 and the male connector 402 which are arranged in a matched manner can be an existing double shut-off valve quick connector 4.
It should be noted that: the power source 7 for controlling the inserting and extracting actions of the telescopic tube is generally driven by hydraulic power, such as a hydraulic cylinder. The hydraulic cylinder moves linearly, the telescopic pipe is the piston rod of the hydraulic cylinder, and if the piston rod is used as a water pipeline, the piston rod of the hydraulic cylinder is the piston rod with double outlet rods. Of course, the telescopic tube can be driven by other linear motion mechanisms.
Since the water distributor group 3 rotates along with the rotary drum 2, the circulating water cooling device also comprises a deflection driving mechanism 6, so that the connected telescopic tube group 5 can rotate around the central axis of the rotary drum (also the central axis AO of the blast furnace) by a certain angle under the driving of the deflection driving mechanism 6. The deflection driving mechanism 6 is generally a motor-driven gear mechanism, and specifically includes a deflection power source 601, and a driving gear 602 and a driven gear 603 that are meshed with each other, wherein the driving gear 602 is disposed at an output end of the deflection power source 601 (motor), and two telescopic tubes 503 and 504 in the telescopic tube group 5 are disposed on the driven gear 603 through a mounting frame 505 and are driven to deflect by the driven gear 603. It should be noted that: the gear mechanism which is fixedly connected with the mounting frame 505 and serves as a driven gear 603 can be an incomplete gear arc section or a complete outer gear ring.
In the telescopic tube group 5, two independently arranged telescopic tubes 503, 504 are mounted together on one mounting frame 505 to form a whole. In order to realize the rotation of the telescopic tube group 5 around the central axis AO of the blast furnace or the central axis of the rotary drum 2, in this scheme, an arc-shaped guiding support rail 501 is also specifically (fixedly arranged in the distributor housing 1), a support sliding groove 502 is fixedly connected to the lower part of the mounting frame 505 of the telescopic tube group 5, and the support sliding groove 502 is clamped on the guiding support rail 501 so that the deflected telescopic tube group 5 with the mounting frame 505 integrally rotates along the guiding support rail 501. By adopting the structure of the matched guide supporting rail and the supporting chute, the use of a large bearing structure is avoided, the manufacture is simple, and the cost is low.
In this scheme, the insertion and extraction of the telescopic pipes 503 and 504 are linear motion mechanisms, and the whole telescopic pipe group 5 adopts a rotary motion mechanism to realize deflection, that is, the rotation driven by a gear and the insertion and extraction driven by a hydraulic cylinder are respectively controlled, so that the whole control system is simpler and more reliable. Of course, other mechanisms (e.g., manipulators) capable of effecting the planar resultant motion are also possible, even by specially designed mechanisms (e.g., linkages) capable of simultaneously effecting the above-described insertion and extraction and deflection track motions. With such a mechanism, the support runner 502 and the guide support rail 501 are unnecessary in this embodiment.
As is known, the blast furnace distributor comprises a distributor housing 1 and a rotary drum 2, wherein the distributor housing 1 and its drive are fixed on a flange of a blast furnace 11 in a sealing manner, the rotary drum 2 is suspended on a drive bearing inside the distributor housing 1 by a slewing bearing, the rotary drum 2 is arranged coaxially with a central axis AO of the blast furnace, a distribution chute tilting mechanism is mounted on the rotary drum 2, and the distribution chute is suspended on an output shaft of the distribution chute tilting mechanism.
The aforementioned circulating water cooling device provides cooling water to the rotary drum 2 of the distributor. The blast furnace distributor with the circulating water cooling device comprises the circulating water cooling device except for basic components such as a distributor shell 1, a rotary drum 2 and the like, wherein a guide support rail is an arc rail and is coaxially arranged on the periphery of the rotary drum.
As shown in fig. 3, three water distribution groups 3 are uniformly arranged at the circumferential position of the chassis outer ring of the rotary drum 2, and are respectively: water dispenser group (one) WG01, water dispenser group (two) WG02, water dispenser group (three) WG03. The lower water channel 304 of each water dispenser group 3 is used as a water inlet channel, and is fixedly connected with the upper end of the water dispenser 301, the lower end of the water dispenser 301 is fixedly connected to the chassis of the rotary drum 2, and is aligned with the water inlet of the water cooling channel T inside the rotary drum 2, and the water dispenser 301 can be used as a supporting structural member of the water dispenser group 3. The upper water channel 303 of each water distributor group 3 is used as a water return channel, is fixedly connected with the lower end of the distribution water pipe 302, and the upper end of the distribution water pipe 302 is fixedly connected to the cylinder body of the rotary cylinder 2 and is aligned with the water outlet of the water cooling channel T inside the rotary cylinder.
Two groups of telescopic tube groups 5 are uniformly distributed on a shell bottom plate of the distributor shell 1, and are respectively: the telescopic tube group (one) EG01 and the telescopic tube group (two) EG02 are also provided with matched water hoses FP01 and FP02, a deflection driving mechanism 6 and a plug power source 7 on the bottom plate of the distributor shell 1.
The deflection driving mechanism 6 adopts a motor reducer to drive a section of arc-shaped large gear (namely the driven gear 603) which is horizontally arranged above the telescopic tube group 5 and fixedly connected with the telescopic tube group 5, and the axis of the large gear is coaxial with the rotation axis of the rotary cylinder 2. The plug power source 7 is a pressure oil path generated by a hydraulic oil pump, each telescopic pipe 503, 504 is a hydraulic cylinder piston rod with double outlet rods, and a circular waterway hole is formed in the center. One end of each telescopic pipe 503, 504 is communicated with a pipeline of the water-cooled pump station 10 by adopting a water hose FP01, FP02, wherein the lower telescopic pipe 503 is used as a water inlet waterway, and the upper telescopic pipe 504 is used as a water outlet waterway.
As shown in fig. 1, 2 and 3, the male connector 402 of the double shut-off valve quick connector 4 is fixedly connected to the opening (radially inner end) of one end of each telescopic tube 503, 504 and is communicated with the waterway, the two male connectors 402 on each telescopic tube group 5 are aligned with the height positions of the two female connectors 401 on each water dispenser group, respectively, and when the telescopic tubes 503, 504 are in the retracted state, a distance is provided radially.
The two female connectors 401 of each water dispenser group 3 are rotated with the rotary cylinder 2 by a certain angle, and can be in a state of being aligned with the two male connectors 402 fixed on the telescopic tube group 5 (i.e., the male connector plugs are aligned with the female connector slots), so that the plugs of the male connectors 402 can be inserted into the slots of the female connectors 401, thereby realizing the connection and disconnection of the double shut-off valve quick connectors 4.
After the water distributor group 3 and the telescopic pipe group 5 are connected through the double-stop valve quick connector comprising the female connector 401 and the male connector 402, water flows out of the water-cooled pump station 10, flows into the telescopic pipe 503 serving as a water inlet pipe, flows into the distribution water pipe 301 through the water channel 304, then flows into the water-cooled channel T, flows out of the water-cooled channel T, flows into the telescopic pipe 504 serving as a water outlet pipe through the other distribution water pipe 302 and the water channel 303 in sequence, and finally flows back into the water-cooled pump station 10 to form a circulation.
In this scheme, in order to realize the matching connection between the telescopic tube group 5 and the rotating water dispenser group 3, the arc-shaped large gear is driven by the motor reducer to provide deflection power for the telescopic tube group 5, and of course, the rotary driving force of the distributor itself can also be utilized, i.e. a certain intermittent mechanism (such as a sheave mechanism) is designed on the rotary cylinder, so as to realize the intermittent rotation and the plugging action of the telescopic tube group. When the deflection driving mechanisms of the scheme are adopted, the deflection driving mechanisms 6 are preferably matched with the telescopic pipe groups in number to realize one-to-one correspondence control, and deflection power sources in the deflection driving mechanisms are fixedly arranged on the inner wall surface of the distributor shell.
As shown in fig. 1 and 3, the lower end of each telescopic tube group 5 is fixedly connected with a supporting chute 502, the supporting chute 502 is sleeved on a guiding supporting rail 501 below, and the guiding supporting rail 501 is fixedly connected on the bottom plate of the distributor shell 1. The guide support rail 501 may be a broken circular arc rail or a circular ring rail having a full circle. When the circular arc track is adopted, one circular arc track is arranged below each telescopic tube group 5, and when the circular arc track is adopted, a plurality of telescopic tube groups 5 can be arranged on the circular arc track.
As shown in fig. 1, a C-shaped fixed protection cover 8 is added to the outside of the telescopic tube group 5 as an optimization, and the circumferential shape of the protection cover may be a whole circle, but more preferably, the protection cover is arranged to cover only a partial section of the telescopic tube group 5. A full-circle rotation protection plate 9 is provided at the radially outer end of the water distribution group 3. The joint of the fixed protection cover 8 and the rotary protection plate 9 is provided with a gap, the joint can adopt a labyrinth sealing mode, and the space surrounded by the fixed protection cover 8 and the rotary protection plate 9 is sealed by adopting pressure inert gas. The water supply device is provided with the protective cover and the protective plate, so that oil pollution and dust pollution can be prevented, and structural work failure is avoided; the local fixed protection cover not only saves the manufacturing cost, but also saves the overhaul and maintenance space in the distributor.
The water supply method suitable for the blast furnace distributor with the circulating water cooling device mainly comprises the following steps:
s1: the telescopic pipe group 5 is in the waiting position, the telescopic pipes 503 and 504 are in a retracted state and do not interfere the rotary motion of the water dispenser group 3 along with the rotary cylinder 2;
s2: when the water dispenser group 3 rotates to be close to the telescopic tube group 5, the deflection driving mechanism 6 is started to drive the telescopic tube group 5 to do angular acceleration motion in the same direction as the water dispenser group 3;
s3: when the angular velocity of the telescopic tube group 5 is accelerated to be the same as that of the water dispenser group 3, the male joint 402 and the female joint 401 are in a state of being in face-to-face alignment at this time, that is, the telescopic tube group 5 rotates in synchronization with the water dispenser group 3;
s4: when the telescopic tube group 5 and the water distributor group 3 start to synchronously rotate, the plugging power source 7 for controlling the telescopic tubes is started, the two telescopic tubes and the male connector 402 on the telescopic tube group are simultaneously pushed towards the opposite female connector 401, after the valve cores in the female connector 401 and the male connector 402 are mutually jacked, one of the two telescopic tubes in the telescopic tube group 5 is used as a water inlet pipe and the other is used as a water outlet pipe, and the two telescopic tubes are simultaneously communicated with the water cooling channels in the corresponding rotating cylinders to form a circulating loop comprising water supply and water return;
s5: the water supply and return process is continued until the telescopic tube group 5 synchronously rotates to the vicinity of the limit;
s6: when the telescopic pipe group 5 moves to the vicinity of the limit position, the telescopic pipe is pulled out, and the water supply is finished;
s7: the telescopic pipe group reversely rotates back to the waiting machine position to prepare for the next water supply and return operation.
As shown in fig. 3, by combining the preferable two telescopic tube groups 5 with the three water distributor groups 3, continuous water supply and water return to the water cooling passage T inside the rotary drum can be realized.
The specific process is as follows: if the rotary drum 2 is rotated clockwise at this time, and the telescopic pipe group (one) EG01 is supplying water and returning water to the water dispenser group (one) WG01, the telescopic pipe group (two) EG02 stands by; when the water supply of the telescopic tube group (I) EG01 is completed and disconnected with the water dispenser group (I) WG01, the telescopic tube group (II) EG02 is connected with the water dispenser group (II) WG02 and starts to supply water and return water, and the telescopic tube group (I) EG01 returns to the waiting position to be used for supplying water and returning water for the water dispenser group (III) WG03; when the telescopic pipe group (two) EG02 completes the water supply and disconnection to the water dispenser group (two) WG02, the telescopic pipe group (1) EG01 is already connected with the water dispenser group (three) WG03 and starts the water supply and return. The operation is alternately repeated, so that continuous water supply and water return of the water cooling channel T inside the rotary drum are realized.
In addition, the following is to be described: by the scheme, the hydraulic distributor can also be used for providing other fluid media for the distributor rotating cylinder, such as lubricating grease for a tilting mechanism arranged on the rotating cylinder, and only the telescopic pipe is needed to be added at the telescopic pipe group, the medium pipeline is additionally added at the water distributor group, and the double-stop valve quick connector for correspondingly connecting the added pipelines is needed. The independence of the movement mechanism is utilized, and an independent control strategy is adopted, so that the connection and disconnection interval time of the fluid medium is different from the water supply interval time. This principle is the same as the operation principle of the aforementioned device and will not be described here again.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present invention, which is intended to be covered by the claims of the present invention.
Claims (9)
1. The utility model provides a circulating water cooling plant suitable for blast furnace distributing device, includes water cooling pump station, its characterized in that: the water dispenser also comprises a water dispenser group and a telescopic tube group; wherein the water distribution group comprises two independent water channels, one port of each water channel is connected with a female joint, the other port of each water channel is connected with a water cooling channel arranged in the rotary cylinder through a distribution water pipe; the telescopic pipe group comprises two telescopic pipes which are independently arranged, one port of each telescopic pipe is connected with a male joint, and the other port of each telescopic pipe is connected with the water-cooling pump station through a water hose; the two telescopic pipes in the telescopic pipe group are electrically connected with the plug power source and the telescopic state of the telescopic pipe group is controlled by the plug power source, and in the extending state, the two male connectors on the telescopic pipe group are correspondingly matched and communicated with the two female connectors in the water distribution group to form a water cooling channel capable of circulating;
the deflection driving mechanism mainly comprises a deflection power source, and a driving gear and a driven gear which are meshed with each other; the driving gear is arranged at the output end of the deflection power source, and two telescopic pipes in the telescopic pipe group are arranged on the driven gear through the mounting frame and driven by the driven gear to deflect.
2. The circulating water cooling apparatus for a blast furnace distributor according to claim 1, wherein: the mounting frame is provided with a supporting chute which is clamped and embedded on the guiding supporting rail so that the deflected mounting frame rotates along the guiding supporting rail.
3. The circulating water cooling apparatus for a blast furnace distributor according to claim 2, wherein: the female joint and the male joint which are mutually matched are double-stop valve quick joints.
4. A blast furnace distributor comprises a distributor shell, a rotary drum, a rotary shaft and a rotary shaft, wherein the rotary drum is hung inside the distributor shell and is coaxially arranged with a central axis of a blast furnace; the method is characterized in that: the circulating water cooling apparatus according to claim 2 or 3, wherein the guide support rail is a circular arc rail coaxially provided on the outer periphery of the rotary drum.
5. The blast furnace distributor according to claim 4, wherein: at least three water distribution groups are arranged and uniformly distributed around the circumference of the rotary cylinder; at least two telescopic tube sets are arranged on the periphery of the rotary cylinder and matched with the water distribution set.
6. The blast furnace distributor according to claim 5, wherein: the guide support rail is a circular ring rail and is fixedly arranged on the distributor shell; the mounting frames in the telescopic tube groups are all arranged on the circular ring rail.
7. The blast furnace distributor according to claim 5, wherein: the deflection driving mechanisms are matched with the telescopic pipe groups in number to realize one-to-one correspondence control, and deflection power sources in the deflection driving mechanisms are fixedly arranged on the distributor shell.
8. A water supply method suitable for a blast furnace distributor according to any one of claims 5 to 7, characterized by comprising mainly the steps of:
s1: the telescopic pipe group is positioned at the waiting position, the telescopic pipe is in a retracted state and does not interfere the water dispenser group to perform rotary motion along with the rotary cylinder;
s2: when the water dispenser group rotates to be close to the vicinity of the telescopic tube group, the deflection driving mechanism is started to drive the telescopic tube group to do angular acceleration movement in the same direction as the water dispenser group;
s3: when the angular velocity of the telescopic pipe group is accelerated to be the same as that of the water dispenser group, the male joint and the female joint are in a state of being in face-to-face alignment, namely the telescopic pipe group and the water dispenser group synchronously rotate;
s4: when the telescopic pipe group and the water dispenser group start to synchronously rotate, a plug power source for controlling the telescopic pipes is started, the two telescopic pipes and the male connector on the telescopic pipe group are simultaneously pushed towards the opposite female connector, after the female connector and the valve core in the male connector are mutually jacked, one of the two telescopic pipes in the telescopic pipe group is used as a water inlet pipe, the other telescopic pipe is used as a water outlet pipe, and the two telescopic pipes are simultaneously communicated with the water cooling channels in the corresponding rotating cylinders to form a circulating loop comprising water supply and water return;
s5: the water supply and return process is continued until the telescopic pipe group synchronously rotates to the vicinity of the limit;
s6: when the telescopic pipe group moves to the vicinity of the limit position, the telescopic pipe is pulled out, and the water supply is finished;
s7: the telescopic pipe group reversely rotates back to the waiting machine position to prepare for the next water supply and return operation.
9. The water supply method according to claim 8, wherein: the plurality of telescopic pipe sets are matched with the plurality of water dispenser sets, when a certain telescopic pipe set and a certain water dispenser set are matched for supplying water, other telescopic pipe sets are positioned at a waiting position, and when the telescopic pipe set for supplying water ends the water supply, other telescopic pipe sets just start to be matched with other water dispenser sets for supplying water.
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| CN202011443942.9A CN112359158B (en) | 2020-12-08 | 2020-12-08 | Circulating water cooling device, blast furnace distributor and water supply method thereof |
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| CN202011443942.9A CN112359158B (en) | 2020-12-08 | 2020-12-08 | Circulating water cooling device, blast furnace distributor and water supply method thereof |
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| CN112359158B true CN112359158B (en) | 2023-07-18 |
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