CN217628469U - Hot-blast furnace pressurizing mechanism and collaborative furnace changing system - Google Patents
Hot-blast furnace pressurizing mechanism and collaborative furnace changing system Download PDFInfo
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- CN217628469U CN217628469U CN202221812549.7U CN202221812549U CN217628469U CN 217628469 U CN217628469 U CN 217628469U CN 202221812549 U CN202221812549 U CN 202221812549U CN 217628469 U CN217628469 U CN 217628469U
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Abstract
The utility model provides a hot-blast furnace pressurizing mechanism and in coordination trade stove system relates to metallurgical equipment technical field, and hot-blast furnace pressurizing mechanism includes: the first hot air structure is used for being connected with the first blast furnace and comprises a first air supply device, a first control pipeline and a first hot air furnace; the second hot air structure is used for being connected with a second blast furnace and comprises a second air supply device, a second control pipeline, a second hot air furnace and a second pressurizing structure; and the communicating pipeline is controllably communicated with the first air supply device and the second pressurizing structure, and the first air supply device can charge air and pressurize the second hot blast stove through the second pressurizing structure when the second hot blast stove is in a stove changing state. The utility model discloses can reduce or eliminate the pressure differential between hot-blast furnace and the blast furnace, realize the undisturbed stove operation of changing.
Description
Technical Field
The utility model relates to a metallurgical equipment technical field, in particular to hot-blast furnace pressurizing mechanism and in coordination trade stove system.
Background
The hot blast stove is a heat accumulating type stove structure and is mainly used for providing oxygen-enriched hot air for a blast furnace. In the actual use process, the process flow of the hot blast stove is as follows: in a combustion state, the checker bricks (or refractory balls) in the heat storage chamber are heated by high-temperature flue gas generated by combustion of the coal gas and the combustion-supporting air; and then, carrying out furnace changing operation, switching from a combustion state to an air supply state, heating cold air by using the high-temperature checker bricks at the moment, and then conveying the cold air into the blast furnace. In the prior art, a plurality of hot blast stoves are generally arranged to ensure the supply of hot blast. One part of the hot blast stoves is in a combustion state, and the other part of the hot blast stoves can be in an air supply state, so that oxygen-enriched hot air can be continuously supplied to the blast furnace.
When a certain hot blast stove stops burning and is changed from a burning state to an air supply state, cold air under pressure needs to be charged into the hot blast stove for balancing the stove pressure between the hot blast stove and a blast furnace. However, in the process of pressurizing the hot blast stove, because of the pressure difference between the hot blast stove and the blast furnace, a part of cold air needs to be separated from the main pipe and filled into the hot blast stove to be supplied with air for charging and pressurizing the hot blast stove, so that the air supply volume in the main pipe cannot be completely input into the blast furnace, the amount of hot air entering the blast furnace is reduced, the air pressure is quickly reduced due to the reduction of the air volume, the furnace pressure in the blast furnace fluctuates, the process is equivalent to the production of reducing the air and reducing the pressure of the blast furnace, and the stable operation and the stable production of the blast furnace are not facilitated.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above defects of the prior art, the embodiment of the utility model provides a technical problem that will solve provides a hot-blast furnace pressurizing mechanism, trades stove system and steady voltage and trades stove method in coordination for solve the hot-blast furnace and trade the problem that the stove amount of wind caused the disturbance in the in-process to the blast furnace of stove. In addition, the problem that the furnace pressure of the blast furnace is reduced in the process of changing the blast furnace can be solved.
The above object of the utility model can be realized by adopting the following technical scheme, the utility model provides a hot-blast furnace pressurizing mechanism, include:
the first hot air structure is used for being connected with a first blast furnace and comprises a first air supply device, a first control pipeline for connecting the first blast furnace and the first air supply device and a first hot air furnace arranged on the first control pipeline;
the second hot air structure is connected with the second blast furnace and comprises a second air supply device, a second control pipeline for connecting the second blast furnace and the second air supply device, a second hot air furnace arranged on the second control pipeline and a second pressurizing structure arranged between the second hot air furnace and the second control pipeline;
and the communicating pipeline is controllably communicated with the first air supply device and the second pressurizing structure, and the first air supply device can charge air and pressurize the second hot blast stove through the second pressurizing structure when the second hot blast stove is in a stove changing state.
The utility model discloses a in a preferred embodiment, first hot-blast structure is still including setting up first hot-blast furnace with first pressurizing structure between the first control pipeline first hot-blast furnace is in under the state of changing the stove, first air supply arrangement can pass through first pressurizing structure is right first hot-blast furnace pressurizes by charging.
In a preferred embodiment of the present invention, the first hot blast stove is provided with a plurality of seats in parallel, each of which is provided with the first pressurizing structure between the first hot blast stove and the first control pipeline.
In a preferred embodiment of the present invention, the second hot blast stove is provided with a plurality of seats in parallel, each of which is provided with the second pressurizing structure between the second hot blast stove and the second control pipeline.
In a preferred embodiment of the present invention, the first control pipeline includes a first air charging pipe, and a first control valve and a second control valve disposed on the first air charging pipe, and the first control valve and the second control valve are sequentially disposed on two sides of the first hot blast stove along the air supply direction of the first air supply device; the first pressurizing structure comprises a first pressurizing pipe and a first pressurizing valve arranged on the first pressurizing pipe, and the first pressurizing valve is connected with the first control valve in parallel through the first pressurizing pipe.
In a preferred embodiment of the present invention, the second control pipeline includes a second air charging pipe, and a third control valve and a fourth control valve disposed on the second air charging pipe, and the third control valve and the fourth control valve are sequentially disposed on two sides of the second hot blast stove along the air supply direction of the second air supply device; the second pressurizing structure comprises a second pressurizing pipe and a second pressurizing valve arranged on the second pressurizing pipe, one end of the second pressurizing pipe is connected with the second air charging pipe, the other end of the second pressurizing pipe is connected with the communicating pipeline, and the second pressurizing valve is connected with the third control valve in parallel through the second pressurizing pipe.
In a preferred embodiment of the present invention, the communication pipeline includes a communication pipe and a flow control valve disposed on the communication pipe.
In a preferred embodiment of the present invention, the pressurizing mechanism of the hot blast stove further comprises a gas storage tank, the gas storage tank is disposed on the communicating pipe, and a gas storage control valve is disposed between the gas storage tank and the first air supply device; under the condition that the first air supply device is communicated with the air storage tank, the first air supply device can charge air and pressurize the air storage tank; and when the second hot blast stove is in a stove changing state, the air storage tank can charge air and pressurize the second hot blast stove.
In a preferred embodiment of the present invention, the gas storage tank includes a tank body, and a safety valve and a blowoff valve provided on the tank body.
The utility model also provides a hot-blast furnace system of trading in coordination, include as before hot-blast furnace pressurize mechanism, first blast furnace and at least one second blast furnace, first blast furnace links to each other with first hot-blast structure, the second blast furnace links to each other with the hot-blast structure of second.
In a preferred embodiment of the present invention, a plurality of second hot air structures are connected in parallel, each of the second hot air structures is correspondingly connected to one of the second blast furnaces.
The utility model also provides an use like aforementioned hot-blast furnace steady voltage trades stove method of stove device, including following step:
when the second hot blast stove is in a stove changing state, the first air supply device is communicated with the second pressurizing structure, and the first air supply device is utilized to charge air and pressurize the second hot blast stove;
and when the internal pressure of the second hot blast stove reaches a first pressure set value, communicating the second hot blast stove with the second blast furnace, starting a second air supply device, and conveying hot air in the second hot blast stove into the second blast furnace by using the second air supply device.
In a preferred embodiment of the present invention, the hot blast furnace pressure stabilizing and changing device is applied, and the pressure stabilizing and changing method comprises the following steps:
when the second hot blast stove is in a stove changing state, opening a flow regulating valve and a second pressurizing valve to communicate the first air supply device with the second hot blast stove, and pressurizing the second hot blast stove by using the second air supply device;
and when the internal pressure of the second hot blast stove reaches the first pressure set value, closing the flow regulating valve and the second pressurizing valve, and opening a third control valve to enable the second air supply device to be communicated with the second hot blast stove, so that the second air supply device is used for conveying hot air in the second hot blast stove into the second blast stove.
In a preferred embodiment of the present invention, the hot blast furnace pressure stabilizing and changing device is applied, and the pressure stabilizing and changing method comprises the following steps:
the flow control valve and the air storage control valve can be opened, the first air supply device is utilized to charge air and pressurize the air storage tank, and air is prestored in the air storage tank;
when the second hot blast stove is in a stove changing state, opening a flow regulating valve, a gas storage control valve and a second pressurizing valve to enable the gas storage tank to be communicated with the second hot blast stove, controlling the air output of the gas storage tank by utilizing the flow regulating valve, and inflating and pressurizing the second hot blast stove through the gas storage tank;
and when the internal pressure of the second hot blast stove reaches the first pressure set value, closing the flow regulating valve, the air storage control valve and the second pressurizing valve, opening a third control valve, communicating the second air supply device with the second hot blast stove, and conveying hot air in the second hot blast stove into the second blast stove by using the second air supply device.
In a preferred embodiment of the present invention, the first pressure setting value is reached when the internal pressure of the second hot blast stove is equal to the internal pressure of the second blast furnace.
The technical scheme of the utility model following beneficial effect that is showing has:
when the hot-blast furnace pressurizing mechanism is used, the hot-blast furnace pressurizing mechanism can utilize the first hot air structure to produce hot air to convey into the first blast furnace, and also can utilize the second hot air structure to produce hot air to convey into the second blast furnace, so as to be used for the blast furnace air supply production process. Wherein in the use of first hot-blast structure, in order to satisfy the different operating mode needs of first blast furnace, can set up first air supply arrangement into variable frequency fan, make first air supply arrangement's maximum air supply volume be greater than the required amount of wind of first blast furnace, make first air supply arrangement have abundant air supply ability like this to can fill the wind pressurization for the second blast furnace. When the second hot blast stove is changed, the first air supply device and the second hot blast stove are communicated through the communication pipeline, and then the second hot blast stove is filled with air by utilizing the rich air supply capacity of the first air supply device so as to improve the internal pressure of the second hot blast stove. When the internal pressure of the second hot blast stove rises to the first set value, the second air supply device can be started, and the second air supply device is utilized to convey hot air in the second hot blast stove into the second blast furnace. When the second hot blast stove is provided with a plurality of seats, the second hot blast stove is alternately changed to ensure the stable production of the second blast furnace, and the second hot blast stove in the furnace changing state can be charged and pressurized by utilizing the first air supply device.
The hot-blast furnace mechanism of pressurizing can fill the wind pressurization to the second hot-blast furnace through the abundant air supply ability that utilizes first air supply arrangement at the second hot-blast furnace trades the stove in-process to reduce or eliminate the pressure differential between second hot-blast furnace and the second blast furnace, realize the undisturbed operation of trading the stove. Because the second hot-blast furnace adds the wind pressurization back, dwindles or has eliminated the pressure differential between second hot-blast furnace and the second blast furnace for second air supply arrangement need not to add the wind pressurization to the second hot-blast furnace, and then second air supply arrangement can be with the input air output in the second blast furnace, thereby has avoided the circumstances that the income stove amount of wind of second blast furnace appears reducing. Just the utility model discloses at first hot-blast furnace trades stove in-process, through first air supply arrangement of first pressurizing structure intercommunication and first hot-blast furnace, utilize first air supply arrangement to fill the wind pressurization to first hot-blast furnace to reduce or eliminated the pressure differential between first hot-blast furnace and the first blast furnace, realized the operation of no disturbance trades the stove. The utility model discloses can avoid the hot-blast furnace trade stove process to cause the disturbance to the blast furnace, improve the operation stationarity of blast furnace for the output of blast furnace is more stable.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained without creative efforts.
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for helping the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. The skilled person in the art can, under the teaching of the present invention, choose various possible shapes and proportional dimensions to implement the invention according to the specific situation.
Fig. 1 is a schematic structural view of a pressurizing mechanism of a hot blast stove of the present invention;
fig. 2 is a schematic view of an installation structure of the air storage tank.
Reference numerals of the above figures:
1. a first blast furnace;
2. a first hot air structure;
21. a first air supply device;
22. a first control line; 221. a first air charging pipe; 222. a first control valve; 223. a second control valve;
23. a first hot blast stove;
24. a first pressurizing structure; 241. a first pressure tube; 242. a first charging valve;
3. a second blast furnace;
4. a second hot air structure;
41. a second air supply device;
42. a second control line; 421. a second air inflation pipe; 422. a third control valve; 423. a fourth control valve;
43. a second hot blast stove;
44. a second pressurizing structure; 441. a second pressure tube; 442. a second charging valve;
5. a communicating pipeline; 51. a communicating pipe; 52. a flow regulating valve; 53. an air storage control valve; 54. an air-filled flow meter;
6. a gas storage tank; 61. a tank body; 62. a safety valve; 63. a blowoff valve;
7. flue branch pressure gauge.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 and fig. 2, in an embodiment of the present invention, a pressurizing mechanism for a hot blast stove is provided, including: the first hot air structure 2 is used for being connected with the first blast furnace 1, and the first hot air structure 2 comprises a first air supply device 21, a first control pipeline 22 for connecting the first blast furnace 1 and the first air supply device 21, and a first hot air furnace 23 arranged on the first control pipeline 22. And the second hot air structure 4 is connected with the second blast furnace 3, and the second hot air structure 4 comprises a second air supply device 41, a second control pipeline 42 for connecting the second blast furnace 3 and the second air supply device 41, a second hot blast stove 43 arranged on the second control pipeline 42, and a second pressurizing structure 44 arranged between the second hot blast stove 43 and the second control pipeline 42. And the communication pipeline 5 is used for controllably communicating the first air supply device 21 with the second pressurizing structure 44, and when the second hot blast stove 43 is in a stove changing state, the first air supply device 21 can charge air and pressurize the second hot blast stove 43 through the second pressurizing structure 44.
On the whole, when the hot-blast furnace pressurizing mechanism used, the hot-blast furnace pressurizing mechanism can utilize the first hot-blast structure 2 to produce hot air to convey into the first blast furnace 1, and also can utilize the second hot-blast structure 4 to produce hot air to convey into the second blast furnace 3 so as to be used for the blast furnace air supply production process. In order to meet the requirements of different working conditions of the first blast furnace 1 during the use of the first hot blast structure 2, a sufficient air supply capacity is left in the first air supply device 21. When the second hot blast stove 43 is replaced, the first air supply device 21 and the second hot blast stove 43 can be communicated through the communication pipeline 5, and then the second hot blast stove 43 is inflated by utilizing the rich air supply capacity of the first air supply device 21 so as to improve the internal pressure of the second hot blast stove 43. When the internal pressure of the second hot blast stove 43 rises to the set value, the second air blowing device 41 is turned on, and the hot air in the second hot blast stove 43 is fed into the second blast furnace 3 by the second air blowing device 41. Through the rich air supply ability that utilizes first air supply arrangement 21, can change the stove in-process at second hot-blast furnace 43 and fill wind pressurization to second hot-blast furnace 43 to reduce or eliminate the pressure differential between second hot-blast furnace 43 and the second blast furnace 3, realize the undisturbed stove operation of changing, avoided second hot-blast furnace 43 to change the stove process and led to the fact the disturbance to second blast furnace 3, the operation stationarity of second blast furnace 3 has been improved, make the output of second blast furnace 3 more stable.
Because the second hot-blast furnace 43 is pressurized through charging air, the pressure difference between the second hot-blast furnace 43 and the second blast furnace 3 is reduced or eliminated, the second air supply device 41 does not need to charge air and pressurize the second hot-blast furnace 43, and then the second air supply device 41 can input the air supply volume into the second blast furnace 3, thereby avoiding the condition that the air volume entering the second blast furnace 3 is reduced.
The types of the first blast furnace 1 and the second blast furnace 3 are not limited here, and the types of the first hot blast furnace 23 and the second hot blast furnace 43 are not limited here. The user may also set flue branch pressure gauges 7 on the first and second hot blast stoves 23, 43 to measure the flue gas pressure. Of course, the designer may also provide other devices on the first and second hot blast stoves 23, 43, without limitation here.
In the use process of the embodiment of the present invention, when the second hot blast stove 43 is in the air supply state, the internal pressure of the second hot blast stove 43 can reach about 450 kPa. When the second hot blast stove 43 is in a combustion state, the internal pressure of the second hot blast stove 43 is about 1 kPa. The normal use of the valve on the second control line 42 is also affected due to the large pressure difference between the combustion state and the supply state of the second stove 43. Under the action of huge pressure difference, the valve between the second hot blast stove 43 and the second blast furnace 3 is difficult to be directly opened or closed due to insufficient self-driving force. The utility model discloses a first air supply arrangement 21 charges the wind pressurization to second hot-blast furnace 43, has eliminated pressure differential between second hot-blast furnace 43 and the second blast furnace 3, can also make the valve between second hot-blast furnace 43 and the second blast furnace 3 open or close more easily.
In the embodiment of the present invention, the first hot air structure 2 further includes a first pressurizing structure 24 disposed between the first hot air furnace 23 and the first control pipeline 22, the first hot air furnace 23 is in a furnace changing state, and the first air supply device 21 can be pressurized by the first pressurizing structure 24.
In the process of changing the first hot blast stove 23, the first air supply device 21 and the first hot blast stove 23 are communicated through the first pressurizing structure 24, the first air supply device 21 can be used for inflating and pressurizing the first hot blast stove 23, so that the pressure difference between the first hot blast stove 23 and the first blast furnace 1 is reduced or eliminated, the undisturbed stove changing operation is realized, the running stability of the first blast furnace 1 is further improved, and the yield of the first blast furnace 1 is more stable.
The first air blowing device 21 may be an inverter fan, and the maximum air blowing amount of the first air blowing device 21 is larger than the air amount required by the first blast furnace 1, so that the first air blowing device 21 has a sufficient air blowing capacity, and the second blast furnace 3 can be inflated and pressurized.
In the embodiment of the present invention, the communication pipeline 5 includes a communication pipe 51 and a flow rate control valve 52 provided on the communication pipe 51. The flow rate of the inflation gas in the communication pipe 51 can be controlled by the flow rate control valve 52. Of course, the designer may also set an air charging flow meter 54 on the connection pipe 51 to record the magnitude of the air charging flow, which is not limited herein.
In the embodiment of the present invention, the first hot blast stove 23 is provided with a plurality of hot blast stoves in parallel, and each of the first hot blast stove 23 and the first control pipeline 22 is provided with the first pressurizing structure 24 therebetween.
Through setting up a plurality of first hot-blast furnaces 23, can be in combustion state and air supply state alternately between a plurality of first hot-blast furnaces 23, and then guaranteed the stable production process of first blast furnace 1. For example, three first hot blast stoves 23 may be provided, and a two-firing one-feeding working regime may be adopted among the three first hot blast stoves 23. Or, four first hot blast stoves 23 can be arranged, and a working system of two-burning and two-feeding is adopted among the four first hot blast stoves 23. Of course, the designer may also determine the number of the first hot blast stoves 23 and the working system according to the use requirement, and is not limited herein.
In the embodiment of the present invention, a plurality of second hot blast stoves 43 are connected in parallel, and each of the second hot blast stoves 43 and the second control pipeline 42 is provided with the second pressurizing structure 44 therebetween.
By arranging the plurality of second hot blast stoves 43, the plurality of second hot blast stoves 43 can be alternately in a combustion state and an air supply state, thereby ensuring the stable production process of the second blast furnace 3. For example, three second hot blast stoves 43 may be provided, and a double-firing one-feeding operation system may be adopted between the three second hot blast stoves 43. Alternatively, four second hot blast stoves 43 may be provided, with a two-firing and two-feeding operating regime between the four second hot blast stoves 43. Of course, the designer may also determine the number of the second hot blast stoves 43 and the working system according to the use requirement, which is not limited herein.
In this embodiment, the first control pipeline 22 includes a first air charging pipe 221, and a first control valve 222 and a second control valve 223 which are arranged on the first air charging pipe 221, and along the air supply direction of the first air supply device 21, the first control valve 222 and the second control valve 223 are arranged on two sides of the first hot blast stove 23 in sequence; the first charging structure 24 includes a first charging pipe 241 and a first charging valve 242 disposed on the first charging pipe 241, and the first charging valve 242 is disposed in parallel with the first control valve 222 through the first charging pipe 241.
When the first hot blast stove 23 is in an air supply state, the first control valve 222 and the second control valve 223 are opened, the first pressurizing valve 242 is closed, the first air supply device 21, the first hot blast stove 23 and the first blast furnace 1 are communicated through the first air charging pipe 221, and hot air in the first hot blast stove 23 is conveyed into the first blast furnace 1 by the first air supply device 21 for production.
When the first hot blast stove 23 is in the stove change state, the first pressure charging valve 242 is opened, the first control valve 222 and the second control valve 223 are closed, the first air supply device 21 and the first hot blast stove 23 are communicated through the first pressure charging pipe 241, the first air supply device 21 is used for charging and pressurizing the first hot blast stove 23, and when the pressure in the first hot blast stove 23 reaches a set value, the operations can be performed.
The first air blowing device 21 may be a blower. Of course, the designer may also configure the first air supply device 21 as other devices, such as an air compressor or a compressed air pipeline, and the like, without limitation.
In this embodiment, the second control pipeline 42 includes a second air charging pipe 421, and a third control valve 422 and a fourth control valve 423 which are arranged on the second air charging pipe 421, and the third control valve 422 and the fourth control valve 423 are arranged on two sides of the second hot blast stove 43 in sequence along the air supply direction of the second air supply device 41; the second pressurizing structure 44 includes a second pressurizing pipe 441 and a second pressurizing valve 442 provided on the second pressurizing pipe 441, one end of the second pressurizing pipe 441 is connected to the second pressurizing pipe 421, the other end of the second pressurizing pipe 441 is connected to the communication pipe 5, and the second pressurizing valve 442 is provided in parallel with the third control valve 422 through the second pressurizing pipe 441.
When the second hot blast stove 43 is in a blowing state, the third control valve 422 and the fourth control valve 423 are opened, the second pressurizing valve 442 is closed, the second blowing device 41, the second hot blast stove 43 and the second blast furnace 3 are communicated through the second blowing pipe 421, and hot air in the second hot blast stove 43 is conveyed into the second blast furnace 3 for production by using the second blowing device 41.
When the second hot blast stove 43 is in the stove change state, the second pressure charging valve 442 and the flow control valve 52 are opened, the third control valve 422 and the fourth control valve 423 are closed, the first air supply device 21 and the first hot blast stove 23 are communicated through the first pressure charging pipe 241, the first air supply device 21 is used for charging and pressurizing the first hot blast stove 23, and when the pressure in the first hot blast stove 23 reaches a set value, the operations can be performed.
In this embodiment, the pressurizing mechanism of the hot blast stove further includes a gas storage tank 6, the gas storage tank 6 is disposed on the communicating pipe 51, and a gas storage control valve 53 is disposed between the gas storage tank 6 and the first air supply device 21; in a state that the first air supply device 21 is communicated with the air storage tank 6, the first air supply device 21 can charge air and pressurize the air storage tank 6; when the second hot blast stove 43 is in the state of changing the stove, the air storage tank 6 can charge air to pressurize the second hot blast stove 43.
By providing the air storage tank 6 in the communication pipe 51, the first air supply device 21 can prestore the charged air in the air storage tank 6, and when the second hot blast stove 43 is replaced, the air storage tank 6 is used to input the prestore charged air into the second hot blast stove 43 for charging operation, so as to increase the internal pressure of the second hot blast stove 43.
When the air-filled gas is stored in the air tank 6, the air-filled gas is stored in the air tank 6 by the first air blowing device 21 by opening the air storage control valve 53 and closing the second air charging valve 442.
When the pre-stored charging gas in the gas storage tank 6 is released to charge the second hot blast stove 43, the second charging valve 442 is opened, and the charging gas in the tank is input into the second hot blast stove 43 by using the gas storage tank 6, so as to improve the internal pressure of the second hot blast stove 43. At this time, the air storage control valve 53 may be in an open state, and the first blowing device 21 may input the charging air into the air storage tank 6, and the air storage tank 6 may input the charging air into the second hot blast stove 43. Of course, the storage control valve 53 may be in a closed state, and the user may adjust the state of the storage control valve 53 as needed, which is not limited herein.
Specifically, the gas storage tank 6 comprises a tank body 61, and a safety valve 62 and a blow-off valve 63 which are arranged on the tank body 61. Of course, the designer may also set other devices on the air storage tank 6 according to the use requirement, and the device is not limited herein.
The utility model provides a hot-blast furnace system of trading in coordination among the embodiment, hot-blast furnace pressurizing mechanism, first blast furnace 1 and at least one second blast furnace 3 in the preceding embodiment, first blast furnace 1 links to each other with first hot-blast structure 2, second blast furnace 3 links to each other with second hot-blast structure 4. The specific structure, working principle and beneficial effects of the hot blast stove pressurizing mechanism are the same as those in the previous embodiment, and are not described again here.
Specifically, a plurality of second hot air structures 4 are connected in parallel, and each second hot air structure 4 is correspondingly connected with one second blast furnace 3. Through parallelly connected the setting with a plurality of second hot-blast structures 4, utilize first air supply arrangement 21 can fill the wind pressurization operation for many second hot-blast stoves 43 simultaneously, can realize the undisturbed stove process of changing of many second hot-blast stoves 43, show to improve the production stability of hot-blast stove collaborative furnace changing system. The user can adjust the number of the second hot air structures 4 according to the requirement, and then supply hot air to the plurality of second blast furnaces 3, so as to meet the requirements of different capacities, without limitation.
Of course, the designer may also set a controller and a pressure sensor on the hot blast stove cooperative furnace change system, wherein the pressure sensor may be set on the first blast furnace 1 and the second blast furnace 3 to obtain pressure data, and the controller may control the opening and closing of each valve based on the obtained pressure data, thereby implementing an automatic control process of the hot blast stove cooperative furnace change system. The types and the arrangement positions of the controller and the pressure sensor are not limited herein. Of course, the designer may also set a temperature sensor on the hot blast stove cooperative furnace changing system to acquire temperature data, so that the controller can control the operation of the hot blast stove cooperative furnace changing system based on the temperature data and the pressure data, which is not limited herein.
Under a specific scene, for example to current blast furnace production system, utilize the utility model provides a technical scheme can reform transform the blast furnace production system among the prior art through the mode that increases intercommunication pipeline and other pipelines between two or a plurality of blast furnaces to can cooperate the realization undisturbed stove process of changing between the blast furnace among the messenger prior art, and then improve the production stability and the production productivity of the blast furnace production system among the prior art. The designer is through reforming transform the blast furnace production system among the prior art, can obtain the hot-blast furnace trades stove system in coordination, and it is little to reform transform the engineering volume, reforms transform with low costsly, and adaptability is wide.
The embodiment of the utility model provides an in the embodiment provide a steady voltage of hot-blast furnace steady voltage device of changing stove method, including the following step:
when the second hot blast stove 43 is in the stove changing state, the first air supply device 21 is communicated with the second pressurizing structure 44, and the second hot blast stove 43 is inflated and pressurized by the first air supply device 21.
When the internal pressure of the second hot blast stove 43 reaches a first pressure set value, the second hot blast stove 43 and the second blast furnace 3 are communicated, the second air supply device 41 is started, and the hot air in the second hot blast stove 43 is conveyed into the second blast furnace 3 by using the second air supply device 41.
In the present embodiment, when the second hot blast stove 43 is in the stove change state, the flow control valve 52 and the second pressure charging valve 442 are opened to communicate the first air blowing device 21 with the second hot blast stove 43, and the second air blowing device 41 charges and pressurizes the second hot blast stove 43.
When the internal pressure of the second hot blast stove 43 reaches the first pressure set value, the flow control valve 52 and the second pressurizing valve 442 are closed, the third control valve 422 is opened, the second air supply device 41 is communicated with the second hot blast stove 43, and the second air supply device 41 is used for conveying hot air in the second hot blast stove 43 into the second blast furnace 3.
When the air storage tank 6 is arranged on the communication pipeline 5, the flow control valve 52 and the air storage control valve 53 can be opened, the air storage tank 6 is inflated and pressurized by the first air supply device 21, and air is pre-stored in the air storage tank 6.
When the second hot blast stove 43 is in a stove change state, the flow control valve 52, the air storage control valve 53 and the second pressure charging valve 442 are opened to communicate the air storage tank 6 with the second hot blast stove 43, the air output of the air storage tank 6 is controlled by the flow control valve 52, and the air charging and pressurization are performed on the second hot blast stove 43 through the air storage tank 6.
When the internal pressure of the second hot blast stove 43 reaches the first pressure setting value, the flow control valve 52, the air storage control valve 53 and the second pressurizing valve 442 are closed, the third control valve 422 is opened, the second air supply device 41 is communicated with the second hot blast stove 43, and the hot air in the second hot blast stove 43 is delivered into the second blast furnace 3 by the second air supply device 41.
In the present embodiment, the pressure set value is reached when the internal pressure of the second hot blast stove 43 is equal to the internal pressure of the second blast furnace 3. Of course, the designer may adjust the magnitude of the first pressure set point according to the use requirement, which is not limited herein.
The utility model discloses a pressure differential between second hot-blast furnace 43 and the second blast furnace 3 can be dwindled or eliminated to this steady voltage method of changing furnaces, realizes the undisturbed operation of changing furnaces, has avoided second hot-blast furnace 43 to change the furnace process and has caused the disturbance to second blast furnace 3, has improved the operation stationarity of second blast furnace 3 for the output of second blast furnace 3 is more stable.
All articles and references disclosed, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of 8230comprises the elements, components or steps identified and other elements, components or steps which do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional. A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (11)
1. A hot blast stove pressurizing mechanism is characterized by comprising:
the first hot air structure is used for being connected with a first blast furnace and comprises a first air supply device, a first control pipeline for connecting the first blast furnace and the first air supply device and a first hot air furnace arranged on the first control pipeline;
the second hot air structure is used for being connected with a second blast furnace and comprises a second air supply device, a second control pipeline for connecting the second blast furnace and the second air supply device, a second hot air furnace arranged on the second control pipeline and a second pressurizing structure arranged between the second hot air furnace and the second control pipeline;
and the communicating pipeline is controllably communicated with the first air supply device and the second pressurizing structure, and the first air supply device can charge air and pressurize the second hot blast stove through the second pressurizing structure when the second hot blast stove is in a stove changing state.
2. The hot blast stove pressurization mechanism of claim 1, wherein the first hot blast stove structure further comprises a first pressurization structure disposed between the first hot blast stove and the first control pipeline, and the first air supply device is capable of pressurizing the first hot blast stove by charging air through the first pressurization structure when the first hot blast stove is in a stove change state.
3. The hot blast stove pressurizing mechanism according to claim 2, wherein the first hot blast stove is provided with a plurality of seats in parallel, and the first pressurizing structure is provided between each first hot blast stove and the first control pipeline.
4. A hot blast stove pressurising mechanism according to claim 3, characterised in that a plurality of second hot blast stoves are provided in parallel, the second pressurising structure being provided between each second hot blast stove and the second control duct.
5. The hot blast stove pressurization mechanism according to claim 4, wherein the first control pipeline comprises a first air charging pipe, and a first control valve and a second control valve which are arranged on the first air charging pipe, and the first control valve and the second control valve are arranged on two sides of the first hot blast stove in sequence along the air supply direction of the first air supply device; the first pressurizing structure comprises a first pressurizing pipe and a first pressurizing valve arranged on the first pressurizing pipe, and the first pressurizing valve is connected with the first control valve in parallel through the first pressurizing pipe.
6. The charging mechanism of hot blast stove according to claim 5, wherein the second control pipeline comprises a second charging pipe, and a third control valve and a fourth control valve arranged on the second charging pipe, and the third control valve and the fourth control valve are arranged on two sides of the second hot blast stove in sequence along the blowing direction of the second blowing device; the second pressurizing structure comprises a second pressurizing pipe and a second pressurizing valve arranged on the second pressurizing pipe, one end of the second pressurizing pipe is connected with the second air charging pipe, the other end of the second pressurizing pipe is connected with the communicating pipeline, and the second pressurizing valve is arranged in parallel with the third control valve through the second pressurizing pipe.
7. The charging mechanism of hot blast stove according to claim 6, characterized in that the communication pipe comprises a communication pipe and a flow regulating valve disposed on the communication pipe.
8. The hot blast stove pressurizing mechanism according to claim 7, further comprising a gas storage tank disposed on the communicating pipe, wherein a gas storage control valve is provided between the gas storage tank and the first air supply device; under the condition that the first air supply device is communicated with the air storage tank, the first air supply device can charge air and pressurize the air storage tank; and when the second hot blast stove is in a stove changing state, the air storage tank can charge air and pressurize the second hot blast stove.
9. The hot blast stove charging mechanism of claim 8, wherein said air reservoir comprises a tank body and a safety valve and a blow-down valve disposed on the tank body.
10. A hot blast stove coordinated stove exchange system, comprising a hot blast stove pressurizing mechanism according to any one of claims 1 to 9, a first blast furnace connected to a first hot blast structure, and at least one second blast furnace connected to a second hot blast structure.
11. The synergistic stove change system of claim 10, wherein a plurality of the second hot air structures are connected in parallel, and each second hot air structure is connected to a corresponding second blast furnace.
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|---|---|---|---|
| CN202221812549.7U CN217628469U (en) | 2022-07-13 | 2022-07-13 | Hot-blast furnace pressurizing mechanism and collaborative furnace changing system |
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| CN202221812549.7U CN217628469U (en) | 2022-07-13 | 2022-07-13 | Hot-blast furnace pressurizing mechanism and collaborative furnace changing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115094178A (en) * | 2022-07-13 | 2022-09-23 | 中冶京诚工程技术有限公司 | Hot blast stove pressurizing mechanism, cooperative stove changing system and pressure stabilizing stove changing method |
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2022
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115094178A (en) * | 2022-07-13 | 2022-09-23 | 中冶京诚工程技术有限公司 | Hot blast stove pressurizing mechanism, cooperative stove changing system and pressure stabilizing stove changing method |
| CN115094178B (en) * | 2022-07-13 | 2024-02-09 | 中冶京诚工程技术有限公司 | Hot blast stove pressurizing mechanism, collaborative furnace changing system and pressure stabilizing furnace changing method |
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