Anti-surge structure of air feeder

Abstract

The invention discloses an anti-surge structure of an air feeder, and relates to the field of air feeders. An air outlet of the air feeder is connected to a converter through an air gun connected with an air outlet pipeline, the air outlet pipeline is connected with a pressure relief pipeline, the pressure relief pipeline is connected with an anti-surge valve, the pressure relief pipeline is further connected with a pressure relief valve, and the anti-surge valve and the pressure relief valve are connected in parallel; and the pressure relief valve is used for timely relieving the pressure of the outlet pipeline so as to prevent the air feeder from surging.

Description

Technical Field

[0001] This invention relates to the field of blowers, specifically to an anti-surge structure for blowers. Background Technology

[0002] During copper blowing in a PS converter, the required air supply is typically provided by a blower. During blower operation, the converter opening needs to rotate frequently, causing frequent fluctuations in gas pressure within the blower's outlet pipe. If pressure is not released in time, the blower is highly susceptible to surge. Existing blowers usually rely on their own anti-surge valves to release pressure and avoid surge. However, commercially available anti-surge valves, when directly installed in the control system, suffer from delayed activation due to the time required for pressure data acquisition and analysis. This can lead to the valve failing to open in a timely manner, ultimately failing to completely prevent surge. Summary of the Invention

[0003] The purpose of this invention is to provide an anti-surge structure for a blower, which uses a pressure relief valve to promptly relieve pressure on the outlet pipe to prevent the blower from surging.

[0004] The present invention can be achieved by the following technical solution: an anti-surge structure for a blower, wherein the blower outlet is connected to a converter via an air gun connected to an air outlet pipe, a pressure relief pipe is connected to the air outlet pipe, an anti-surge valve is connected to the pressure relief pipe, and a pressure relief valve is also connected to the pressure relief pipe, with the anti-surge valve and the pressure relief valve connected in parallel.

[0005] Compared with the prior art, the present invention has the following beneficial effects:

[0006] When the gas pressure in the pressure relief pipeline exceeds the set value, the pressure relief valve opens quickly to reduce the gas pressure in the outlet duct. After the gas pressure in the outlet duct decreases, the pressure relief valve closes quickly, thereby ensuring the stability of the outlet duct pressure during the converter's air supply process and preventing the blower from surging. Attached Figure Description

[0007] Figure 1 This is a diagram showing the gas path layout for Example 1;

[0008] Figure 2 This is a gas path layout diagram for Example 2. Detailed Implementation

[0009] Example 1

[0010] Please see Figure 1As shown, an anti-surge structure for a blower is described. The blower's outlet is connected to a blower gun via an outlet pipe 10. A pressure relief pipe 20 is connected to the outlet pipe 10, and an anti-surge valve 30 and a pressure relief valve 40 are also connected to the pressure relief pipe 20. The anti-surge valve 30 and the pressure relief valve 40 are connected in parallel. A pressure relief valve 40 is connected in parallel next to the anti-surge valve 30. The pressure relief pressure of the pressure relief valve 40 is set according to the actual situation (in this embodiment, the pressure relief valve 40 is a 47-41000 type pneumatic sleeve regulating valve with a pressure relief setting of 120 kPa). When the gas pressure in the pressure relief pipe 20 exceeds the set value, the pressure relief valve 40 quickly opens to reduce the gas pressure in the outlet pipe 10. After the gas pressure in the outlet pipe 10 decreases, the pressure relief valve 40 can quickly close, thereby ensuring the stability of the pressure in the outlet pipe 10 during the blower's operation and preventing the blower from surging.

[0011] In the above, the anti-surge valve 30 is existing technology. Figure 1 and Figure 2 This application only shows its general shape and structure. It does not limit its shape, structure or model type, nor does it elaborate on its specific working principle.

[0012] The anti-surge valve 30 and the pressure relief valve 40 are respectively placed on the anti-surge branch pipe 21 and the pressure relief branch pipe 22. The anti-surge branch pipe 21 is also connected to a buffer container 50, which is located upstream of the anti-surge valve 30. The buffer container 50 provides a place for the gas entering the pressure relief pipe 20, which can reduce the rate of increase of the gas pressure in the pressure relief pipe 20, so as to provide sufficient sampling time for the computer system that controls the operation of the anti-surge valve 30, so that the anti-surge valve 30 can react in time to avoid the surge phenomenon. The buffer container 50 can be an elastic component such as an airbag.

[0013] A one-way valve 51 is installed between the buffer container 50 and the anti-surge branch pipe 21. The one-way valve 51 is directed to allow pressurized gas to enter the buffer container 50 through the anti-surge branch pipe 21. A safety valve 52 is connected to the buffer container 50. The one-way valve 51 prevents backflow of gas downstream of the one-way valve 51, allowing the buffer container 50 to continuously absorb gas and fully utilize its buffering effect. The safety valve 52 allows the gas inside the buffer container to be released promptly when too much gas enters the buffer container 50, thus protecting the buffer container 50.

[0014] The pressure relief pipe 20 is connected to the upstream end of the flexible section on the air outlet pipe 10. Placing the pressure relief pipe 20 on the upstream end of the flexible section, which includes the rigid section of the air outlet pipe 10, can avoid the pipe folding problem caused by the pressure relief pipe 20 and the flexible section on the air outlet pipe 10 rotating together with the converter, so that the pressure relief pipe 20 is always in a smooth state and can properly relieve pressure.

[0015] Example 2

[0016] Please see Figure 2 As shown, an anti-surge structure for a blower differs from Embodiment 1 in that a buffer pipe 60 is also connected to the anti-surge branch pipe 21, and the buffer pipe 60 is located upstream of the anti-surge valve 30. The buffer pipe 60 extends the length of the anti-surge branch pipe 21, increases the space for gas, and slows down the rate of increase in gas pressure. This reduces the rate of increase in gas pressure in the pressure relief pipe 20, providing sufficient time for the computer system controlling the operation of the anti-surge valve 30 to sample, judge, and send control signals, enabling the anti-surge valve 30 to react in time to avoid surge.

Claims

1. A surge prevention structure for a blower, wherein the blower's outlet is connected to a converter via an air gun connected to an air outlet pipe (10), a pressure relief pipe (20) is connected to the air outlet pipe (10), and a surge prevention valve (30) is connected to the pressure relief pipe (20), characterized in that: A pressure relief valve (40) is also connected to the pressure relief pipeline (20), and the anti-surge valve (30) and the pressure relief valve (40) are connected in parallel.

2. The anti-surge structure for the blower according to claim 1, characterized in that: The anti-surge valve (30) and the pressure relief valve (40) are respectively placed on the anti-surge branch pipe (21) and the pressure relief branch pipe (22).

3. The anti-surge structure for the blower according to claim 2, characterized in that: A buffer container (50) is connected to the anti-surge branch pipe (21), and the buffer container (50) is located upstream of the anti-surge valve (30).

4. The anti-surge structure for the blower according to claim 3, characterized in that: A one-way valve (51) is provided between the buffer container (50) and the anti-surge branch pipe (21). The one-way valve (51) is in the direction of flow so that the pressurized gas is introduced into the buffer container (50) through the anti-surge branch pipe (21). A safety valve (52) is connected to the buffer container (50).

5. The anti-surge structure for the blower according to claim 1, characterized in that: The pressure relief line (20) is connected to the upstream end of the flexible hose section on the air outlet duct (10).

6. The anti-surge structure for the blower according to claim 2, characterized in that: A buffer line (60) is connected to the anti-surge branch (21), and the buffer line (60) is located upstream of the anti-surge valve (30).

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