Air inlet complementary pipeline of large and medium-sized air supply equipment

Abstract

The utility model belongs to the technical field of air supply pipelines, and relates to an air inlet complementation pipeline of large and medium-sized air supply equipment, which comprises an operation fan, an air supply pipeline is arranged on the operation fan, a diffusion pipeline is led out from one side of the air supply pipeline, and one side of the operation fan is connected to an air suction chamber through an air suction pipeline. A communication pipeline is led out of the air suction pipeline and connected to a standby pipeline, the bottom of the standby pipeline is connected with a second air suction chamber, the top of the standby pipeline is connected with a standby fan which is connected with a second air supply pipeline, and a standby diffusion pipeline is led out of one side of the standby fan. According to the system, standby equipment is effectively utilized, existing assets are activated to the maximum extent, the equipment utilization rate is improved, and the lowest-energy-consumption operation of the system is achieved after the air suction pressure difference and the fan operation working condition are effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of air supply pipeline technology, specifically relating to a complementary air intake pipeline for large and medium-sized air supply equipment. Background Technology

[0002] In the steel, chemical and other industrial production processes, large and medium-sized blast furnaces and other air-using equipment originally had separate air intake chambers for each independent unit, without backup air intake chambers, only backup units. When the operating unit had a problem or malfunction, the backup unit was urgently started to operate. This resulted in unstable air intake, rapid changes, and untimely switching, causing insufficient air supply to blast furnaces and other air-using equipment, or even the risk of air outage. This was also extremely detrimental to the long-term stable operation of the blower itself. Sometimes, in winter or rainy and snowy weather, the air intake of the air intake filter element was affected, causing fluctuations in air supply, and even causing the blower to automatically switch to safe operation, directly affecting the operational safety and stability of blast furnaces and other air-using equipment.

[0003] How to prevent surge accidents caused by insufficient air intake, ensure unobstructed air intake ducts, and create reliable equipment conditions for automatic control between blast furnace and blower, solving the air intake chamber problem has become a difficult problem for equipment managers.

[0004] In actual use, the following problems exist: First, the air intake chamber of the backup electric blower is left idle for a long time, resulting in waste of resources and equipment wear and tear.

[0005] Secondly, when the electric blower's suction chamber is affected by environmental factors, rain or snow, or due to increased dust accumulation from long-term operation, it is prone to insufficient air intake.

[0006] Third, the blower cannot be stopped to replace or purge the filter element while it is running, resulting in insufficient air supply or surge, which is not conducive to the safe operation of the blast furnace and blower, directly affecting the economic benefits of ironmaking and failing to guarantee the safe operation of the system.

[0007] Therefore, a complementary air intake pipeline for large and medium-sized air supply equipment is proposed. Utility Model Content

[0008] The purpose of this utility model is to provide a complementary air intake pipeline for large and medium-sized air supply equipment, which has the function of complementary air supply and intake. It solves the problem that the existing technology has the characteristics of unstable air intake, rapid changes and untimely switching when emergency start-up of standby units, which causes insufficient air supply or even the risk of air outage for air-using equipment such as blast furnaces. It is also extremely detrimental to the long-term stable operation of the blower itself.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a complementary air intake pipeline for large and medium-sized air supply equipment, including a running fan, an air supply duct provided on the running fan, a venting duct leading out from one side of the air supply duct, an air intake duct connecting one side of the running fan to an air intake chamber, a connecting duct leading out from the air intake duct to a backup duct, a second air intake chamber connected to the bottom of the backup duct, a backup fan connected to the top of the backup duct, a backup fan connected to a second air supply duct, and a backup venting duct leading out from one side of the backup fan.

[0010] Preferably, an air supply flow meter is installed on the air supply duct, and a backup flow meter is installed on the second air supply duct.

[0011] Preferably, the venting pipe is provided with a venting port at its end and a venting valve is provided on the venting pipe.

[0012] Preferably, one end of the air intake chamber is provided with an air filter port, and one end of the second air intake chamber is provided with a second air filter port.

[0013] Preferably, the connecting pipe is equipped with an electric butterfly valve and a pneumatic deflector valve.

[0014] Preferably, a backup vent is provided at the end of the backup vent pipe, and a backup vent valve is provided on the backup vent pipe.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] 1. This utility model enables the effective use of backup equipment, maximizes the utilization of existing assets, improves equipment utilization, and effectively improves the suction pressure difference and fan operating conditions, thereby achieving the lowest energy consumption operation of the system.

[0017] 2. This utility model has a complementary function of air supply and intake, which solves the problem that the existing technology has the characteristics of unstable air intake, rapid changes and untimely switching when emergency start-up of standby units, which causes insufficient air supply or even the risk of air outage for air-using equipment such as blast furnaces. It is also extremely detrimental to the long-term stable operation of the blower itself. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the complementary air intake pipeline of a large and medium-sized air supply equipment.

[0020] In the diagram above, 1. Operating fan, 2. Air supply duct, 3. Air supply flow meter, 4. Vent duct, 5. Vent outlet, 6. Vent valve, 7. Suction duct, 8. Suction chamber, 9. Air filter, 10. Connecting duct, 11. Backup duct, 12. Electric butterfly valve, 13. Pneumatic deflector valve, 14. Second suction chamber, 15. Second air filter, 16. Backup fan, 17. Second air supply duct, 18. Backup flow meter, 19. Backup vent duct, 20. Backup vent outlet, 21. Backup vent valve. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1, as Figure 1 As shown, a complementary air intake pipeline for a large and medium-sized air supply system includes a running fan 1. The running fan 1 is responsible for providing a stable air supply to a blast furnace or other industrial equipment. The stable operation of the running fan 1 ensures a continuous and stable air supply volume. An air delivery duct 2 is installed on the running fan 1. The air delivery duct 2 is used to transport the airflow generated by the running fan 1 to the target equipment, such as a blast furnace, providing effective airflow transmission.

[0024] A vent pipe 4 extends from one side of the air supply duct 2. The vent pipe 4 is used to discharge excess airflow, preventing excessive internal pressure, quickly releasing pressure to prevent equipment damage, and protecting equipment operation safety. The operating fan 1 is connected to the suction chamber 8 via a suction duct 7. The suction chamber 8 is the first step for air entry, drawing air from the outside. The suction duct 7 is used to introduce air into the operating fan 1, providing a stable air intake channel to ensure that the operating fan 1 can continuously receive sufficient air supply.

[0025] A connecting pipe 10 extends from the suction duct 7, connecting to the backup duct 11. The connecting pipe 10 connects the suction duct 7 and the backup duct 11, forming a complementary air intake system. The connecting pipe 10 provides a backup air intake channel, allowing for rapid switching in case of problems with the main air intake path, thus preventing air supply interruption. The bottom of the backup duct 11 connects to the second suction chamber 14, which draws in air from the outside. The backup duct 11 receives air from the second suction chamber 14 and can also supply air to the suction duct 7 through the connecting pipe 10, increasing system redundancy and ensuring uninterrupted air supply.

[0026] The top of the backup duct 11 is connected to a backup fan 16. The backup fan 16 is activated when the operating fan 1 malfunctions or cannot meet demand, ensuring continuous air supply, providing additional safety, and reducing the risk of air supply interruption. The backup fan 16 is connected to a second air supply duct 17, which in turn connects to the backup fan 16, delivering airflow to the target equipment. This ensures that once the backup fan 16 is activated, airflow can be delivered to the equipment quickly and effectively, preventing air supply interruption. A backup vent duct 19 extends from one side of the backup fan 16. The backup vent duct 19 is used to discharge excess airflow, preventing excessive internal pressure.

[0027] The specific design of the aforementioned key components will be discussed in detail below:

[0028] An air supply flow meter 3 is installed on the air supply duct 2. The air supply flow meter 3 is used to monitor the air flow rate through the air supply duct 2. Through accurate monitoring, the working status of the operating fan 1 can be adjusted in a timely manner to prevent insufficient or excessive air supply. A backup flow meter 18 is installed on the second air supply duct 17. The backup flow meter 18 is used to monitor the air flow rate through the second air supply duct 17.

[0029] The vent pipe 4 is provided with a vent port 5 at its end. The vent port 5 is the air outlet of the vent pipe 4. A vent valve 6 is provided on the vent pipe 4. The vent valve 6 controls the opening and closing of the vent pipe 4, thereby regulating the amount of air discharged.

[0030] An air filter port 9 is provided at one end of the air intake chamber 8, and a second air filter port 15 is provided at one end of the second air intake chamber 14. The air filter port 9 and the second air filter port 15 are respectively installed on the air intake chamber 8 and the second air intake chamber 14 to filter impurities in the air, ensure the quality of the air entering the operating fan 1 and the standby air, reduce the frequency of equipment maintenance, and extend the service life of the fan.

[0031] The connecting pipe 10 is equipped with an electric butterfly valve 12 and a pneumatic deflector valve 13. The electric butterfly valve 12 can automatically control the opening and closing, while the pneumatic deflector valve 13 is used to adjust the airflow distribution, providing precise airflow control capabilities and ensuring stable operation under different working conditions.

[0032] The backup vent pipe 19 is provided with a backup vent port 20 at its end. The backup vent port 20 is the air outlet of the backup vent pipe 19. A backup vent valve 21 is provided on the backup vent pipe 19. The backup vent valve 21 controls the airflow discharge of the backup vent pipe 19 to ensure that the airflow can be quickly adjusted in an emergency and the system can be kept running stably.

[0033] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A large and medium-sized air supply equipment air inlet complementary pipeline, characterized in that, Including running fan, the running fan is provided with air supply pipeline, and the air supply pipeline side leads to the diffusion pipeline, and the running fan side is connected to the air suction chamber through the air suction pipeline, and the air suction pipeline leads to the connecting pipeline connected to the standby pipeline, the bottom of the standby pipeline is connected to the second air suction chamber, the top of the standby pipeline is connected to the standby fan, the standby fan is connected to the second air supply pipeline, the standby fan side leads to the standby diffusion pipeline, and the connecting pipeline is provided with an electric butterfly valve and a pneumatic air valve.

2. The complementary air inlet pipeline of a large or medium-sized air supply equipment according to claim 1, characterized in that, The air supply pipeline is provided with an air supply flow meter, and the second air supply pipeline is provided with a standby flow meter.

3. The complementary air inlet pipeline of a large or medium-sized air supply equipment according to claim 1, characterized in that, The diffusion pipeline is provided with a diffusion port at the end, and a diffusion valve is arranged on the diffusion pipeline.

4. The complementary air inlet pipeline of a large or medium-sized air supply equipment according to claim 1, characterized in that, The air suction chamber is provided with an air filter port at one end, and the second air suction chamber is provided with a second air filter port at one end.

5. The complementary air inlet pipeline of a large or medium-sized air supply equipment according to claim 1, characterized in that, The standby diffusion pipeline is provided with a standby diffusion port at the end, and a standby diffusion valve is arranged on the standby diffusion pipeline.

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