CN111850204A - Drainage system for accumulated water in blast furnace hearth - Google Patents
Drainage system for accumulated water in blast furnace hearth Download PDFInfo
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- CN111850204A CN111850204A CN202010859730.2A CN202010859730A CN111850204A CN 111850204 A CN111850204 A CN 111850204A CN 202010859730 A CN202010859730 A CN 202010859730A CN 111850204 A CN111850204 A CN 111850204A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/14—Discharging devices, e.g. for slag
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/24—Test rods or other checking devices
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Abstract
The invention relates to a drainage system for accumulated water in a hearth of a blast furnace, belonging to the field of blast furnaces. The automatic drainage device comprises a drainage short pipe, a drainage branch pipe and a drainage main pipe, wherein the tail end of the drainage main pipe is connected with the automatic drainage device; each drainage short pipe is provided with a pressure detection device and an overhaul valve, wherein the overhaul valve is arranged at the tail end of the drainage short pipe behind the pressure detection device; each drainage branch pipe comprises a straight pipe section I and a straight pipe section II, one end of the straight pipe section I is connected into an L-shaped pipe structure through an overhauling three-way valve and one end of the straight pipe section II, the other end of the straight pipe section I is connected onto a drainage short pipe, and the other end of the straight pipe section II is connected onto a drainage main pipe. The whole drainage pipeline is simple in composition, accumulated water accumulated in the hearth in the production process of the blast furnace can be timely drained, online blockage removal can be realized, the maintenance is convenient, the service life of the hearth of the blast furnace is prolonged, and the economic benefit is improved.
Description
Technical Field
The invention belongs to the field of blast furnaces, and particularly relates to a drainage system for accumulated water in a hearth of a blast furnace.
Background
Blast furnace iron making is a main process method of an iron making technology, in recent years, blast furnaces at home and abroad frequently have hearth burning-through accidents and suffer from the trouble of abnormal rise of hearth carbon brick temperature, some blast furnaces are burnt through even in 1 to 2 years of operation, the production life of the blast furnaces is greatly shortened, the safety production of the blast furnaces is seriously threatened, and huge economic losses are caused to enterprises. The blast furnace hearth can stably run for a long time and mainly depends on cooling equipment and refractory materials to form a stable heat transfer system, but in the actual production process, air gaps can be formed between the cooling equipment and the refractory materials due to the problems of water leakage of the cooling equipment, coal gas leakage and the like, once the air gaps exist in the hearth, the heat transfer system of the hearth can be damaged, the abnormal erosion of carbon bricks of the hearth can be caused, and the service life of the blast furnace can be shortened.
During the production process, the water accumulation in the refractory material of the blast furnace hearth has two main sources: one is that the cooling equipment at the tuyere and above is damaged and leaks water, the working environment of the blast furnace tuyere equipment is severe, and partial cooling water after damage leaks into a gap between a refractory brick and the cooling equipment and accumulates in a refractory material; and secondly, supersaturated moisture carried by blast furnace gas, wherein the blast furnace blast air and the moisture carried by raw fuel are completely vaporized at high temperature, part of the moisture escapes to a furnace shell or cooling equipment along with the gas and then is condensed, and liquid water is accumulated in a hearth refractory material along the furnace shell or the cooling equipment under the action of gravity because a hearth is positioned at the bottom of the blast furnace.
The blast furnace hearth can stably run for a long time and depends on the cooling equipment and refractory materials to form a stable heat transfer system, if moisture enters the hearth refractory materials, on one hand, the moisture and the hearth carbonaceous refractory materials generate chemical reaction at high temperature to erode the hearth refractory materials; on the other hand, after the water is heated, the water is vaporized, and great pressure is formed in a closed space in the furnace wall to push the furnace wall or the cooling wall to deform, so that a gap is formed between the cooling wall and the refractory material, a hearth heat transfer system is damaged, the hearth carbon bricks are abnormally corroded, and the service life of the blast furnace is shortened. Therefore, the accumulated water in the hearth is timely discharged, which has important significance for slowing down the erosion of the hearth carbon bricks and prolonging the service life of the blast furnace hearth.
The chinese patent application No. 201711182660.6 discloses a drainage system for draining accumulated water in a blast furnace, but the system has some disadvantages and cannot meet the drainage and exhaust requirements of an actual blast furnace. Production practices show that the blast furnace needs frequent grouting operation in the production operation process, and a plurality of short pipes (including thermometer short pipes and grouting holes) on the side wall of the blast furnace hearth can be blocked after a long time. In this patent scheme, the drainage pipe adopts the crisscross series arrangement each other, though can collect the interior ponding of stove by the maximum extent, but drainage pipe arranges complicacy, and actual production is difficult to implement, and does not consider the clearance measure after the pipeline blocks up in this scheme, maintains inconveniently, in case the pipeline takes place to block up, whole drainage pipe probably can not discharge water, and then influences the drainage effect of blast furnace hearth.
Disclosure of Invention
In view of the above, the present invention provides a drainage system for accumulated water in a blast furnace hearth, which has a simple arrangement, can dredge and clean a blocked pipeline, is convenient to maintain, can effectively maintain the temperature of a heat transfer system of the blast furnace hearth, slow down the erosion rate of a refractory material in the hearth, and prolong the service life of the blast furnace hearth.
In order to achieve the purpose, the invention provides the following technical scheme:
a drainage system for accumulated water in a blast furnace hearth comprises a drainage pipeline and an automatic drainage device, wherein the drainage pipeline mainly comprises a plurality of drainage short pipes, drainage branch pipes and a drainage main pipe, the water inlet end of each drainage short pipe extends into the blast furnace hearth and reaches the cold surface end of a refractory material in a furnace, each drainage short pipe is connected with the drainage main pipe through the corresponding paired drainage branch pipe, and the tail end of the drainage main pipe is connected with the automatic drainage device; each drainage short pipe is provided with a pressure detection device and an overhaul valve, wherein the overhaul valve is arranged at the tail end of the drainage short pipe behind the pressure detection device; each drainage branch pipe comprises a straight pipe section I and a straight pipe section II, one end of the straight pipe section I is connected into an L-shaped pipe structure through an overhauling three-way valve and one end of the straight pipe section II, the other end of the straight pipe section I is connected onto a drainage short pipe, and the other end of the straight pipe section II is connected onto a drainage main pipe.
Further, the water discharge pipeline is arranged in a high-temperature area of the blast furnace hearth.
Furthermore, the drainage pipelines have a plurality of groups which are sequentially arranged around the circumferential direction of the furnace wall of the blast furnace, and a plurality of drainage short pipes in each group of drainage pipelines are arranged at intervals along the height direction of the blast furnace.
Further, the water inlet end of the short drainage pipe passes through an orifice on the wall of the blast furnace, and the orifice is one or more of a thermocouple hole, a grouting hole, a preset hole or a cooling equipment fixing bolt hole.
Further, when the cooling equipment is fastened on the furnace shell of the blast furnace through the hollow bolt, the water inlet end of the drainage short pipe penetrates through the cooling equipment sealing cover arranged outside the furnace shell and extends into the hollow of the bolt, and the inner end of the hollow bolt is in contact with the cold surface end of the refractory material.
Further, a drainage branch pipe valve is arranged on the straight pipe section II in the drainage branch pipe.
Further, the straight pipe section I in the drainage branch pipe is perpendicular to the drainage short pipe.
Further, the automatic drainage device comprises a main drainage pipe valve and an automatic drainer, the main drainage pipe valve is arranged on the main drainage pipe, the automatic drainer is provided with a liquid level detection device, and the bottom of the automatic drainer is provided with a drainage valve; the liquid level detection device is linked with the main drainage pipe valve and the drainage valve in signal correlation.
Further, the main drainage pipe valve and the drainage valve are both electrically operated valves.
The invention has the beneficial effects that:
(1) the pressure detection device on the drainage short pipe can monitor the pressure in the drainage pipeline and the pressure change in the blast furnace hearth in real time, judge whether the drainage pipeline is blocked, and the maintenance valve at the tail end of the drainage short pipe and the maintenance three-way valve on the drainage branch pipe can timely clear the blockage, thereby ensuring the smoothness of the drainage pipeline.
(2) The whole water drainage pipeline is simple in composition, accumulated water accumulated in the hearth in the production process of the blast furnace can be timely drained, the maintenance is convenient, the influence of the accumulated water in the hearth and air gaps on a hearth heat transfer system and carbon bricks is greatly reduced, the erosion of the carbon bricks is slowed down, the service life of the hearth of the blast furnace is prolonged, and the economic benefit is improved.
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 objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic structural view of a water accumulation and drainage system of a blast furnace hearth;
FIG. 2 is a schematic plan expanded view of a drainage system for water accumulated in a hearth of a blast furnace;
FIG. 3 is a schematic structural diagram according to a first embodiment;
FIG. 4 is a schematic structural diagram of the second embodiment;
FIG. 5 is a schematic view of cleaning the plugging material according to one embodiment;
FIG. 6 is a schematic view of a cooling device mounting structure;
FIG. 7 is a schematic view of a hollow bolt;
fig. 8 is a control schematic diagram of the automatic water discharging device.
Reference numerals:
the device comprises refractory bricks 1, joint filler 2, cooling equipment 3, a furnace shell 4, a short drainage pipe 5, a pressure detection device 6, an inspection valve 7, an inspection three-way valve 8, a drainage branch pipe 9, a drainage branch pipe valve 10, a drainage main pipe 11, a drainage main pipe valve 12, an automatic drainage device 13, a drainage valve 14, a plugging dredging rod 15, plugging 16, a bolt hole sealing cover 17, hollow bolts 18 and solid bolts 19;
a straight pipe section I901 and a straight pipe section II 902; liquid level detection device 1301, liquid level signal acquisition system 1302, valve control system 1303.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood 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 numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
As shown in fig. 1 to 5, the drainage system for accumulated water in a blast furnace hearth comprises at least one group of drainage pipelines arranged in a high-temperature area of the blast furnace hearth, wherein each group of drainage pipelines comprises at least one drainage short pipe 5 extending into the blast furnace hearth and reaching a cold surface of a refractory material in a furnace, a drainage branch pipe 9 matched with the drainage short pipe 5 and a drainage main pipe 11 connected with an automatic drainage device 13. The refractory material comprises refractory bricks 1 and joint compound 2, wherein the refractory bricks 1 are arranged at the innermost side and are contacted with molten iron and slag, and the joint compound 2 is positioned between the cooling device 3 and the refractory bricks 1. The water inlet end of the short drainage pipe 5 sequentially penetrates through the furnace shell 4 and the cooling equipment 3 and then is in contact with the joint filler 2, accumulated water enters the short drainage pipe 5 under the action of gravity and pressure of the accumulated water, and then enters the automatic drainage device 13 through the branch drainage pipe 9 and the main drainage pipe 11, so that automatic drainage is realized. After accumulated water in the hearth is discharged through the short water discharge pipe 5, the erosion speed of the refractory brick 1 can be reduced, and the service life and the safety performance are prolonged.
Be provided with pressure measurement device 6 on drainage nozzle stub 5, but through pressure measurement device 6 real time monitoring drainage pipeline in pressure and the pressure variation in the blast furnace hearth, judge whether drainage pipeline blocks up, set up maintenance valve 7 at drainage nozzle stub 5 end simultaneously, be convenient for in time clear up the putty. The maintenance valve 7 can be a manual valve, an electric valve, a pneumatic valve, a hydraulic valve and the like, and can be selectively arranged according to specific requirements so as to realize manual on-site opening or remote opening.
The drainage branch pipe 9 matched with the drainage short pipe 5 is perpendicular to the drainage short pipe 5 for installation, specifically, the drainage branch pipe 9 is formed by connecting a straight pipe section I901 and a straight pipe section II 902 through an overhauling three-way valve 8, and the straight pipe section II 902 is provided with a drainage branch pipe valve 10. The multiple groups of the drainage branch pipes 9 are connected with a drainage main pipe 11, the upper tail end of the drainage main pipe 11 is provided with a drainage main pipe valve 12, the tail end of the drainage main pipe is provided with an automatic drainage device 13, and the automatic drainage device 13 detects the liquid level height through a liquid level detection device 1301 to realize automatic drainage.
The water inlet end of the drainage short pipe 5 needs to sequentially penetrate through the furnace shell 4 and the cooling device 3 and then contacts with the joint filler 2, the hole opening in the furnace shell 4 comprises a thermocouple hole, a grouting hole, a preset hole and the like for a blast furnace hearth, the drainage short pipe 5 can be installed through the holes, a drainage pipeline can be arranged through a bolt hole (for fixing) of the cooling device 3, and accumulated water in the hearth is drained. As shown in fig. 6, 4 solid bolts 19 are adopted for fixing the general cooling device 3 to the furnace shell 4, 1-2 solid bolts 19 can be changed into hollow bolts 18 on the premise of ensuring safety, as shown in fig. 4 and 7, the drainage short pipe 5 is shared with the bolt hole (for fixing) of the cooling device 3, after the cooling device 3 is installed, a hole is formed in the bolt hole sealing cover 17, the drainage short pipe 5 penetrates through the sealing cover 17 and then is connected with the hollow bolt 18, accumulated water in the furnace cylinder can be directly drained, the field hole can be reduced, and the operation is simple and convenient.
As shown in fig. 1-2, the group number of the water drainage pipeline is selected according to the demand and is set, when a plurality of groups of water drainage pipelines are arranged, each group of water drainage pipeline is arranged along the circumferential direction of the blast furnace wall, a plurality of water drainage short pipes 5 and paired water drainage branch pipes 9 in each group of water drainage pipeline are only arranged along the height direction of the blast furnace wall, the water drainage short pipes can be arranged according to the temperature distribution of the side wall of the furnace hearth and the specific demand, so that the accumulated water in the blast furnace can be discharged sufficiently and timely, and the rapid erosion of refractory materials in the blast furnace caused by the accumulated water in the furnace hearth can.
The blockage clearing principle and the blockage clearing process of the drainage system are as follows:
as shown in fig. 5, in order to detect whether the drain pipe is blocked in real time, a pressure detection device 6 is disposed on the drain short pipe 5, and the pressure detection device 6 may be a pressure gauge or a pressure gauge, and the pressure in the drain pipe and the pressure in the blast furnace hearth are monitored in real time to determine whether the drain pipe is blocked. The end of drainage nozzle stub 5 is provided with maintenance valve 7, be provided with maintenance three-way valve 8 on drainage branch 9, because drainage branch 9 is by straight tube section I901, the L type tubular structure that straight tube section II 902 and maintenance three-way valve 8 are constituteed, the event is when the putty in clearance drainage nozzle stub 5, putty dredging rod 15 can directly insert from the terminal maintenance valve 7 of drainage nozzle stub 5, and when clearing up the putty in drainage branch 9, putty dredging rod 15 then directly inserts the clearance from a port of maintenance three-way valve 8, because of straight tube section I is perpendicular with the drainage nozzle stub, the event falls to the putty accessible maintenance three-way valve 8 discharge in straight tube section I901 from drainage nozzle stub 5. This structure not only makes the putty clearance convenient, can also prevent that the putty from getting into straight tube section II 902 and the main pipe 11 of drainage.
The pressure in a general blast furnace is 0.3-0.5 Mpa, when detecting whether each group of branch pipes is blocked, the valve 10 of the drainage branch pipe is closed, and when the pressure value of the pressure detection device 6 is lower than the pressure in the furnace, the blockage 16 exists in the group of drainage pipelines, and the blockage needs to be cleared in time. At the moment, the drain branch pipe valve 10 is closed, the overhaul valve 7 and the adjustment overhaul three-way valve 8 are respectively opened, and the blocking material dredging rod 15 is respectively inserted into the pipe from the tail end of the drain short pipe 5 and the overhaul three-way valve 8 to dredge the blocking material 16 from the drain pipeline, so that the smoothness of the drain pipeline is ensured.
The drainage control process of the drainage system comprises the following steps:
as shown in fig. 8, the automatic drain device 13 is provided at the end of the main drain pipe 11, the accumulated water in the main drain pipe 11 is collected in the automatic drain device 13 through the main drain pipe valve 12, and the drain valve 14 is provided at the bottom of the automatic drain device 13. The liquid level detection device 1301 can detect the liquid level in the automatic drainage device 13 in real time, and the liquid level detection signal of the automatic drainage device 13 is linked with the signals of the drainage main pipe valve 12 and the drainage valve 14; the main drainage pipe valve 12 and the drainage valve 14 open and close drainage according to the liquid level signal of the liquid level detection device 1301, so that gas in the drainage pipeline is prevented from leaking, and automatic drainage is realized. The liquid level signal collecting system 1302 collects the liquid level signal of the liquid level detecting device 1301 in real time and is linked with the valve control system 1303. When the liquid level reaches a preset high liquid level, closing the main drainage pipe valve 12 and opening the drainage valve 14; as the accumulated water is drained, the liquid level in the automatic drainage device 13 gradually decreases; when the liquid level reaches the preset low liquid level, the drainage valve 14 is closed, and the main drainage pipe valve 12 is opened, so that the gas in the drainage pipeline can be prevented from leaking, and automatic drainage is realized.
For further clarity, the following examples are given to illustrate the specific installation of the drain line on the hearth of the blast furnace, but the installation is not limited to the following examples.
The first embodiment is as follows:
as shown in fig. 1 to 3, 5 and 8, the water inlet end of the short drainage pipe 5 is shared with other orifices, and extends into the hearth of the blast furnace to collect the accumulated water in the blast furnace, and the other orifices can be thermocouple holes, grouting holes or reserved holes, etc., and if no holes are available on the wall of the blast furnace, the short drainage pipe 5 is directly drilled and inserted into the wall of the blast furnace. When the short drainage pipe 5 and the grouting hole or the preformed hole share the orifice, the cooling device 3 arranged on the cold surface of the joint filler 2 is a cooling wall, the outer side of the cooling wall is a furnace shell 4 made of a steel plate, the short drainage pipe 5 sequentially penetrates through the furnace shell 4, the cooling device 3 and the joint filler 2 to extend into the refractory brick 1, and the outer end of the short drainage pipe 5 is fixed on the furnace shell 4 of the blast furnace. Set up pressure measurement 6 on drainage nozzle stub 5, pressure measurement 6 can be manometer or pressure gauge, and through the pressure in the real time monitoring drainage conduit and the pressure variation in the blast furnace hearth, judge whether drainage conduit blocks up, sets up maintenance valve 7 at drainage nozzle stub 5's end simultaneously, sets up maintenance three-way valve 8 on drainage branch pipe 9, is convenient for in time clear up the putty. When the pressure value of the pressure detection device 6 is lower than the pressure in the furnace, the blockage 16 exists in the group of drainage pipelines, and the blockage needs to be cleared in time. At the moment, the drain branch pipe valve 10 is closed, the overhaul valve 7 and the adjustment overhaul three-way valve 8 are respectively opened, and the blocking material dredging rod 15 is respectively inserted into the pipe from the tail end of the drain short pipe 5 and the overhaul three-way valve 8 to dredge the blocking material 16 from the drain pipeline, so that the smoothness of the drain pipeline is ensured. In this embodiment, the short drain pipe 5 is DN50 steel pipe, the branch drain pipe 9 is DN25 steel pipe, the maintenance valve 7 on the short drain pipe 5 is DN50 electric ball valve, the maintenance three-way valve 8 on the branch drain pipe 9 is DN25 three-way ball valve, the branch drain pipe valve 10 is DN25 ball valve, the main drain pipe is DN50 steel pipe, the main drain pipe valve 12 and the drain valve 14 are electric ball valve, the setting position of the automatic drainage device 13 is lower than all drain lines, the automatic drainage device 13 can be set on the ground, after the installation, under normal production state, the maintenance valve 7 is in the state of being responsible for normally closed, the branch pipe valve 10, the drain valve 12 keeps the normally open state, the drain valve 14 is in the closed state. When the highest liquid level is reached, the main drainage pipe valve 12 is closed, the drainage valve 14 is opened, and accumulated water in the furnace is drained.
Example two:
as shown in fig. 1, 2, 4, 6 to 8, the water inlet end of the short drainage pipe 5 penetrates through the wall of the blast furnace to collect the accumulated water in the blast furnace, and during installation, a drainage pipeline can be arranged by using a fixing bolt hole of the cooling device 3 to drain the accumulated water in the hearth. General cooling arrangement 3 adopts 4 solid bolt 19 to fix on stove outer covering 4, can be under the assurance safety prerequisite, change 1 ~ 2 solid bolt 19 wherein into hollow bolt 18, the sharing of the fixing bolt hole of drainage nozzle stub 5 and cooling arrangement 3, after cooling arrangement 3 installation finishes, trompil on its bolt hole sealed cowling 17, drainage nozzle stub 5 passes behind the bolt hole sealed cowling 17 and is connected with hollow bolt 18, can directly discharge the ponding in the furnace jar, can reduce on-the-spot trompil, easy operation is convenient. The drainage pipeline and the drainage method are consistent with the embodiment and are not repeated.
This scheme is through setting up simple structure's drainage system on blast furnace hearth lateral wall, can constantly discharge the ponding that produces in the furnace in the blast furnace production process, avoids producing great destruction to hearth refractory material and heat transfer system because of ponding in the hearth, can effectively slow down the erosion of hearth refractory material, prolongs blast furnace hearth life, improves economic benefits.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (9)
1. A drainage system for accumulated water in a blast furnace hearth comprises a drainage pipeline and an automatic drainage device, wherein the drainage pipeline mainly comprises a plurality of drainage short pipes, drainage branch pipes and a drainage main pipe, the water inlet end of each drainage short pipe extends into the blast furnace hearth and reaches the cold surface end of a refractory material in a furnace, each drainage short pipe is connected with the drainage main pipe through the corresponding paired drainage branch pipe, and the tail end of the drainage main pipe is connected with the automatic drainage device; the method is characterized in that: each drainage short pipe is provided with a pressure detection device and an overhaul valve, wherein the overhaul valve is arranged at the tail end of the drainage short pipe behind the pressure detection device; each drainage branch pipe comprises a straight pipe section I and a straight pipe section II, one end of the straight pipe section I is connected into an L-shaped pipe structure through an overhauling three-way valve and one end of the straight pipe section II, the other end of the straight pipe section I is connected onto a drainage short pipe, and the other end of the straight pipe section II is connected onto a drainage main pipe.
2. The drainage system for accumulated water in a blast furnace hearth according to claim 1, characterized in that: the water discharge pipeline is arranged in a high-temperature area of the blast furnace hearth.
3. The drainage system for accumulated water in a blast furnace hearth according to claim 1, characterized in that: the drainage pipelines are provided with a plurality of groups and are sequentially arranged around the circumferential direction of the furnace wall of the blast furnace, and a plurality of drainage short pipes in each group of drainage pipelines are arranged at intervals along the height direction of the blast furnace.
4. The drainage system for accumulated water in a blast furnace hearth according to claim 1, characterized in that: the water inlet end of the short water discharge pipe passes through an orifice on the wall of the blast furnace, and the orifice is one or more of a thermocouple hole, a grouting hole, a preset hole or a cooling equipment fixing bolt hole.
5. The drainage system for accumulated water in a blast furnace hearth according to claim 1, characterized in that: when the cooling equipment is fastened on the furnace shell of the blast furnace through the hollow bolt, the water inlet end of the short drainage pipe penetrates through the cooling equipment sealing cover arranged outside the furnace shell and extends into the hollow part of the bolt, and the inner end of the hollow bolt is in contact with the cold surface end of the refractory material.
6. The drainage system for accumulated water in a blast furnace hearth according to any one of claims 1 to 5, characterized in that: and a drainage branch pipe valve is arranged on the straight pipe section II in the drainage branch pipe.
7. The drainage system for accumulated water in a blast furnace hearth according to claim 6, characterized in that: the straight pipe section I in the drainage branch pipe is perpendicular to the drainage short pipe.
8. The drainage system for accumulated water in a blast furnace hearth according to claim 6, characterized in that: the automatic drainage device comprises a main drainage pipe valve and an automatic drainer, the main drainage pipe valve is arranged on the main drainage pipe, the automatic drainer is provided with a liquid level detection device, and the bottom of the automatic drainer is provided with a drainage valve; the liquid level detection device is linked with the main drainage pipe valve and the drainage valve in signal correlation.
9. The drainage system for accumulated water in a blast furnace hearth according to claim 8, characterized in that: the main drainage pipe valve and the drainage valve are both electrically operated valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010859730.2A CN111850204A (en) | 2020-08-24 | 2020-08-24 | Drainage system for accumulated water in blast furnace hearth |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010859730.2A CN111850204A (en) | 2020-08-24 | 2020-08-24 | Drainage system for accumulated water in blast furnace hearth |
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| CN111850204A true CN111850204A (en) | 2020-10-30 |
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| CN202010859730.2A Pending CN111850204A (en) | 2020-08-24 | 2020-08-24 | Drainage system for accumulated water in blast furnace hearth |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113337656A (en) * | 2021-06-29 | 2021-09-03 | 广东韶钢松山股份有限公司 | Drainage method for hearth during blow-in period after cast repair in blast furnace |
| CN113430316A (en) * | 2021-06-07 | 2021-09-24 | 山西太钢不锈钢股份有限公司 | Online drainage device and drainage method for blast furnace shell |
| CN114134275A (en) * | 2021-12-07 | 2022-03-04 | 武汉钢铁有限公司 | Blast furnace hearth air gap judgment method |
-
2020
- 2020-08-24 CN CN202010859730.2A patent/CN111850204A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113430316A (en) * | 2021-06-07 | 2021-09-24 | 山西太钢不锈钢股份有限公司 | Online drainage device and drainage method for blast furnace shell |
| CN113337656A (en) * | 2021-06-29 | 2021-09-03 | 广东韶钢松山股份有限公司 | Drainage method for hearth during blow-in period after cast repair in blast furnace |
| CN113337656B (en) * | 2021-06-29 | 2022-04-12 | 广东韶钢松山股份有限公司 | Drainage method for hearth during blow-in period after cast repair in blast furnace |
| CN114134275A (en) * | 2021-12-07 | 2022-03-04 | 武汉钢铁有限公司 | Blast furnace hearth air gap judgment method |
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