Blast furnace blower undisturbed reversing system

Abstract

The utility model belongs to the technical field of blast furnace blower equipment, and relates to a blast furnace blower undisturbed reversing system which comprises a first blast furnace, a second blast furnace and a third blast furnace, the first blast furnace is connected to a first BRRT through a first pipeline, the second blast furnace is connected to a second BRRT through a second pipeline, the third blast furnace is connected to a third blower through a third pipeline, a first connecting pipeline is led out of the first pipeline to be connected to a first standby power tractor, and a second connecting pipeline is led out of the second pipeline to be connected to a second standby power tractor. A second connecting pipeline is led out of the first connecting pipeline and connected to the second pipeline, and a third connecting pipeline is led out of the third pipeline and connected to the second standby power tractor. According to the utility model, the combination of multiple pipelines and valves is adopted, the air blowers can be flexibly switched among different blast furnaces to supply air, the linkage with the standby air blower is realized, the continuous air supply is ensured, and the production stagnation is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of blast furnace blower equipment, and particularly relates to a non-disturbance reversing system for a blast furnace blower. Background Art

[0002] In the existing blast furnace blower equipment, the cooling air for the 1# and 2# blast furnaces is supplied by the 1# BPRT and 2# BPRT units respectively, while the cooling air for the 3# blast furnace is supplied by the 3# blower unit. Under normal circumstances, when the BPRT unit or the 3# blower fails, the standby blower can be immediately activated for reverse operation to ensure the continuous operation and production of the blast furnace is not affected. The BPRT unit (Blast Furnace Power Recovery Turbine) is a blast furnace energy recovery device, mainly used in the metallurgical industry. It combines a blast furnace blower and a blast furnace gas waste pressure turbine power generation device. Through a coaxial system design, the equipment originally scattered in different plant buildings is connected in series, realizing efficient energy recovery and utilization.

[0003] However, in existing reverse operations, the process typically takes approximately 40 to 60 minutes. During this time, the standby fans need time to activate and adjust to the blast furnace load, which slows the system's response and can cause air pressure fluctuations, impacting the stable operation of the blast furnace. Insufficient fan startup and switching during the reverse process results in unstable cold air supply, with air pressure fluctuations typically ranging from 10 kPa to 20 kPa. In severe cases, this can even lead to instability in the blast furnace process.

[0004] Furthermore, during the reversal process, process personnel need to manually operate the connecting valve group, and the operator in the main control room needs to control the anti-surge valve in real time to stabilize the air pressure. This reliance on manual operation is subject to uncontrollable factors, resulting in large fluctuations in air pressure and the inability to achieve precise control. Therefore, a non-disturbance reversal system for blast furnace blowers was proposed. Utility Model Content

[0005] The utility model aims to provide a blast furnace blower non-disturbance reversal system, which has the blast furnace blower non-disturbance reversal function and solves the problem of the prior art that the blower is not started and switched quickly enough, resulting in unstable cold air supply.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: the present invention provides a blast furnace blower non-disturbance reverse machine system, including 1# blast furnace, 2# blast furnace and 3# blast furnace, the 1# blast furnace is connected to the 1# BRRT through the No. 1 pipeline, the 2# blast furnace is connected to the 2# BRRT through the No. 2 pipeline, the 3# blast furnace is connected to the 3# blower through the No. 3 pipeline, a first connecting pipe is led out from the No. 1 pipeline and connected to the 1# backup power drag, the first connecting pipe is led out from the second connecting pipe and connected to the No. 2 pipeline, and the No. 3 pipeline is led out from the third connecting pipe and connected to the 2# backup power drag.

[0007] Preferably, the No. 1 pipeline is provided with a first connecting valve and a first air supply valve, the No. 2 pipeline is provided with a second connecting valve and a second air supply valve, and the No. 3 pipeline is provided with a third connecting valve and a third air supply valve.

[0008] Preferably, the outlet of the first connecting pipe is in front of the first connecting valve of the No. 1 pipe.

[0009] Preferably, a fourth connecting valve and a fourth air supply valve are provided on the first connecting pipe.

[0010] Preferably, the outlet position of the second connecting pipe is in front of the fourth connecting valve of the first connecting pipe.

[0011] Preferably, a fifth connecting valve is provided on the second connecting pipe.

[0012] Preferably, a sixth connecting valve and a fifth air supply valve are provided on the third connecting pipe.

[0013] Compared with the prior art, the advantages and positive effects of the present invention are:

[0014] 1. The utility model adopts a combination of multiple pipes and valves, which can flexibly switch the blower air supply between different blast furnaces and link with the standby blower to ensure continuous air supply and avoid production stagnation;

[0015] 2. The utility model has the function of non-disturbance reversal of the blast furnace blower, which solves the problem of unstable cold air supply caused by the slow start-up and switching of the blower in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1This is a structural diagram of a blast furnace blower non-disturbance system;

[0018] In the above figure, 1, 1# blast furnace, 2, 2# blast furnace, 3, 3# blast furnace, 4, 1# BRRT, 5, 2# BRRT, 6, 3# fan, 7, first connecting valve, 8, first air supply valve, 9, second connecting valve, 10, second air supply valve, 11, third connecting valve, 12, third air supply valve, 13, 1# standby electric traction, 14, fourth connecting valve, 15, fourth air supply valve, 16, fifth connecting valve, 17, 2# standby electric traction, 18, sixth connecting valve, 19, fifth air supply valve. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0021] Example 1, as Figure 1 As shown, a blast furnace blower non-disturbance shutdown system includes blast furnace 1#, blast furnace 2#, and blast furnace 3#. Blast furnace 1# is connected to BRRT 1# via pipe 1, blast furnace 2# is connected to BRRT 2# via pipe 2, and blast furnace 3# is connected to fan 3# via pipe 3. Blast furnace 1#, blast furnace 2#, and blast furnace 3# are the primary blast furnace equipment, responsible for high-temperature smelting during the production process. Blast furnace 1#, blast furnace 2#, and blast furnace 3# require air supply to maintain the reaction process. BRRT 1#, BRRT 2#, and fan 3# are the fans supplying air to blast furnace 1#, blast furnace 2#, and blast furnace 3#, respectively. They are responsible for providing cooling air to the corresponding blast furnaces, and their startup and operation directly impact the air pressure and production stability of the blast furnaces. Pipes 1#, 2#, and 3# provide channels for the delivery of cooling air. The pipeline design ensures rapid adaptation to varying air supply requirements during shutdown operations.

[0022] The first connecting pipe is connected to the 1# backup power tug 13 from the first connecting pipe, the second connecting pipe is connected to the 2# pipe from the first connecting pipe, and the third connecting pipe is connected to the 2# backup power tug 17 from the 3# pipe. The 1# backup power tug 13 and the 2# backup power tug 17 are backup propulsion devices that can be switched automatically or manually to ensure uninterrupted cold air supply. The first connecting pipe, the second connecting pipe and the third connecting pipe provide flexible connection channels for the airflow between different blast furnaces and fans, allowing the airflow to adapt quickly when a fault occurs to avoid downtime.

[0023] The following is a detailed description of the design of the above key components:

[0024] The No. 1 pipeline is provided with a first connecting valve 7 and a first air supply valve 8. The first connecting valve 7 is used to control the airflow connection within the No. 1 pipeline, and the first air supply valve 8 is responsible for regulating the air flow sent to the No. 1 blast furnace 1 through the No. 1 pipeline, thereby maintaining a stable wind pressure within the No. 1 blast furnace 1. The No. 2 pipeline is provided with a second connecting valve 9 and a second air supply valve 10. The second connecting valve 9 is used to control the airflow connection within the No. 2 pipeline, and the second air supply valve 10 is responsible for regulating the air flow sent to the No. 2 blast furnace 2 through the No. 2 pipeline, thereby maintaining a stable wind pressure within the No. 2 blast furnace 2. The No. 3 pipeline is provided with a third connecting valve 11 and a third air supply valve 12. The third connecting valve 11 is used to control the airflow connection within the No. 3 pipeline, and the third air supply valve 12 is responsible for regulating the air flow sent to the No. 3 blast furnace 3 through the No. 3 pipeline, thereby maintaining a stable wind pressure within the No. 3 blast furnace 3.

[0025] The first connecting pipe is led out in front of the first connecting valve 7 of the No. 1 pipe to ensure that the original air path of the No. 1 pipe will not be interfered with and can be switched quickly.

[0026] The first connecting pipe is provided with a fourth connecting valve 14 and a fourth air supply valve 15. The fourth connecting valve 14 allows airflow from the first connecting pipe to be switched to blast furnace 1#, enhancing backup supply capacity. The fourth air supply valve 15 regulates the air flow delivered to the blast furnace through the first connecting pipe, further stabilizing the system's air pressure supply.

[0027] The outlet position of the second connecting pipe is in front of the fourth connecting valve 14 of the first connecting pipe, ensuring that the original air path of the second pipe will not be interfered with, and at the same time, it can be quickly switched after a fault occurs.

[0028] The second connecting pipe is provided with a fifth connecting valve 16. The fifth connecting valve 16 allows the gas flow to be switched from the first connecting pipe to the second blast furnace 2, thereby enhancing the backup supply capacity.

[0029] The third connecting pipe is provided with a sixth connecting valve 18 and a fifth air supply valve 19. The sixth connecting valve 18 has a similar airflow switching function to other blast furnaces, ensuring that the airflow from the third connecting pipe can be effectively switched to the third blast furnace 3 when needed. The fifth air supply valve 19 regulates the air flow delivered to the third blast furnace 3 through the third connecting pipe, further stabilizing the system's air pressure supply.

[0030] The first connecting valve 7, the second connecting valve 9, the third connecting valve 11, the fourth connecting valve 14, the fifth connecting valve 16 and the sixth connecting valve 18 are all remotely controlled. When there is no disturbance of the machine, the first air supply valve 8, the second air supply valve 10, the third air supply valve 12, the fourth air supply valve 15 and the fifth air supply valve 19 are linked with the anti-surge valve to stabilize the air pressure, and the amount of equipment operation by the process personnel is significantly reduced.

[0031] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology. It will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field.

[0032] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A blast furnace blower non-disturbance system, comprising blast furnace 1#, blast furnace 2# and blast furnace 3#, characterized in that: The 1# blast furnace is connected to the 1# BRRT through the 1# pipeline, the 2# blast furnace is connected to the 2# BRRT through the 2# pipeline, the 3# blast furnace is connected to the 3# fan through the 3# pipeline, the 1# pipeline is connected to the 1# backup power drag with a first connecting pipe, the first connecting pipe is connected to the 2# pipeline with a second connecting pipe, and the 3# pipeline is connected to the 2# backup power drag with a third connecting pipe.

2. A blast furnace blower non-disturbance system according to claim 1, characterized in that: The No. 1 pipeline is provided with a first connecting valve and a first air supply valve, the No. 2 pipeline is provided with a second connecting valve and a second air supply valve, and the No. 3 pipeline is provided with a third connecting valve and a third air supply valve.

3. A blast furnace blower non-disturbance system according to claim 2, characterized in that: The first connecting pipe is led out at the front side of the first connecting valve of the No. 1 pipe.

4. A blast furnace blower non-disturbance reversing system according to claim 2, characterized in that: The first connecting pipe is provided with a fourth connecting valve and a fourth air supply valve.

5. A blast furnace blower non-disturbance reversing system according to claim 4, characterized in that: The second connecting pipe is led out at a position in front of the fourth connecting valve of the first connecting pipe.

6. A blast furnace blower non-disturbance system according to claim 1, characterized in that: The second connecting pipe is provided with a fifth connecting valve.

7. The blast furnace blower non-disturbance reversing system according to claim 1, characterized in that: The third connecting pipe is provided with a sixth connecting valve and a fifth air supply valve.

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