An oxidation fan auxiliary oil pump oil storage elbow

Abstract

The utility model discloses an auxiliary oil pump oil storage elbow of oxidizing fan belongs to the field of auxiliary oil pump, including lubricating oil tank, oil storage pipeline, auxiliary oil pump and oil system pipeline that communicate in proper order, the oil storage pipeline is including conveying straight pipe, anti -backflow pipe and oil storage elbow that communicate in proper order, and the horizontal position of the connecting end of anti -backflow pipe and oil storage elbow is higher than the horizontal position of auxiliary oil pump, and the bending angle of anti -backflow pipe and oil storage elbow is 90 DEG, through the reform of the oil storage pipeline of auxiliary oil pump inlet of oxidizing fan, makes auxiliary oil pump not to leak the vacuum because of the problem of check door, and the switching, starting of oxidizing fan does not need manual injection lubricating oil, has improved system redundancy and anti -risk ability.

Description

Technical Field

[0001] This utility model belongs to the field of auxiliary oil pumps, and specifically relates to an oil storage bend for an auxiliary oil pump of an oxidation blower. Background Technology

[0002] In the limestone-gypsum wet desulfurization process of thermal power plants, an oxidation blower blows air into the slurry pool of the absorption tower, causing the calcium sulfite in the sprayed flue gas slurry to react with oxygen to produce calcium sulfate, which then crystallizes to form gypsum. This oxidation process improves desulfurization efficiency and prevents the slurry from becoming ineffective due to excessive sulfite concentration, ensuring the long-term stable operation of the desulfurization system.

[0003] Due to the critical role of oxidation blowers in flue gas desulfurization in absorption towers, they require continuous operation around the clock. As a 6KV, 32000r / min rotating unit, the uninterrupted continuous operation of the oxidation blower places stringent requirements on operational stability and operating conditions. Therefore, periodically switching operating modes becomes a key measure in equipment management. By rotating between main and backup units, the operating time of each piece of equipment is balanced, preventing the accumulation of component fatigue caused by prolonged high-load operation of a single unit.

[0004] like Figure 2 As shown, the existing design of the auxiliary oil pump inlet is a 90° elbow, and the outlet is designed as a check valve. The auxiliary oil pump of the oxidation blower works before the oxidation blower starts and before it stops. Before the oxidation blower starts, the auxiliary oil pump supplies oil to the various components of the oxidation blower. When the oxidation blower starts, the main oil pump connected to the end of the main shaft will start rotating. After the main oil pump is running normally, the auxiliary oil pump stops working. Before the oxidation blower stops, the auxiliary oil pump works to remove the heat from the important components. After the oxidation blower stops for 30 minutes, the auxiliary oil pump stops, and the outlet check valve closes to provide vacuum conditions for the next start-up.

[0005] Due to a design flaw, the auxiliary oil pump outlet check valve cannot tightly seal the lubricating oil. As the exhaust fan in the oil tank starts and a negative pressure is created inside the oil tank, the oil stored in the auxiliary oil pump is drawn back into the oil tank. Before the oxidation blower starts, there is no oil stored in the auxiliary oil pump and no vacuum condition inside the auxiliary oil pump, which prevents the various components of the oxidation blower from being lubricated and prevents the oxidation blower from starting. As a result, the oxidation blower needs to be manually injected with lubricating oil before each start-up. Utility Model Content

[0006] To address the above deficiencies, this utility model provides an auxiliary oil pump oil storage bend for an oxidation blower, comprising a lubricating oil tank, an oil storage pipe, an auxiliary oil pump, and an oil system pipeline connected in sequence. The oil storage pipe includes a straight delivery pipe, an anti-backflow pipe, and an oil storage bend connected in sequence.

[0007] The auxiliary oil pump and oil system pipeline are equipped with check valves;

[0008] The horizontal position of the connection end of the anti-backflow pipe and the oil storage bend is higher than the horizontal position of the auxiliary oil pump.

[0009] Furthermore, the conveying straight pipe, the anti-backflow pipe, and the oil storage bend are welded together as a single unit.

[0010] Furthermore, the anti-backflow pipe is divided into two bend pipes in the middle, and the oil storage bend pipe is a third bend pipe, with each bend pipe being 90°.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] By modifying the oil storage pipe to be higher than the auxiliary oil pump pipe, the lubricating oil will naturally flow to the oil storage bend after the auxiliary oil pump stops working and stay there. Even if the negative pressure in the oil tank draws back a small amount of lubricating oil, the system pressure will tend to balance under the dual resistance of the check valve and the oil storage bend. Most of the lubricating oil will be stored in the oil storage bend, thus creating vacuum conditions for the next start-up of the auxiliary oil pump.

[0013] The improvement solves the problem of manually injecting lubricating oil when switching and starting the oxidation blower. Previously, switching and starting the oxidation blower required at least 20 minutes for lubricating oil addition. After the improvement, switching the oxidation blower only requires checking the switch valves before starting, which greatly reduces the start-up time, optimizes the amount of operation, ensures equipment stability, and makes starting and stopping the oxidation blower faster in case of accidents, thus improving the oxidation blower's ability to withstand risks. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of an existing oil storage bend.

[0016] In the diagram: 1. Lubricating oil tank; 21. Straight delivery pipe; 22. Anti-backflow pipe; 23. Oil storage bend; 3. Check valve; 4. Oil system pipeline; 5. Auxiliary oil pump. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example

[0019] like Figure 1As shown, this embodiment provides an auxiliary oil pump oil storage bend for an oxidation blower, including a lubricating oil tank 1, an oil storage pipe, an auxiliary oil pump 5, and an oil system pipe 4 connected in sequence. The auxiliary oil pump 5 and the oil system pipe 4 are equipped with check valves 3. The oil storage pipe includes a straight delivery pipe 21, an anti-backflow pipe 22, and an oil storage bend 23 connected in sequence. It can be understood that the anti-backflow pipe 22 and the oil storage bend 23 are composed of three bend pipes. The anti-backflow pipe 22 is divided into two bend pipes in the middle, and the oil storage bend 23 is the third bend pipe. Each bend pipe is 90° to avoid affecting the oil storage situation of the oil storage bend due to the simultaneous bending angle being too large or too small.

[0020] The horizontal position of the connection end of the anti-backflow pipe 22 and the oil storage bend 23 is slightly higher than the horizontal position of the auxiliary oil pump 5 (the pipe it is connected to), and the height is between 20cm and 30cm. If it is too high, it will increase the oil suction resistance and also easily cause cavitation and affect the performance of the oil pump.

[0021] Figure 1 and Figure 2 The arrows indicate the direction of internal oil flow. By modifying the oil storage pipe to make its height higher than that of the auxiliary oil pump 5, the lubricating oil will naturally flow to the oil storage bend 23 after the auxiliary oil pump 5 stops working and stay there. Even if the negative pressure in the oil tank draws back a small amount of lubricating oil, the system pressure will tend to balance under the dual resistance of the check valve 3 and the oil storage bend 23. Most of the lubricating oil will be stored in the oil storage bend 23, thus creating vacuum conditions for the next start-up of the auxiliary oil pump.

[0022] It should be noted that the oil storage pipeline is made of stainless steel, which has the function of preventing corrosion and can withstand the impact pressure of the oil pump starting and stopping.

[0023] It should be noted that the structure described in this utility model can be implemented in many different forms and is not limited to the embodiments described. Any equivalent transformations made by those skilled in the art based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, such as the loading and unloading of other items, are included within the protection scope of this utility model.

Claims

1. An oil storage bend for an auxiliary oil pump of an oxidation blower, comprising a lubricating oil tank, an oil storage pipe, an auxiliary oil pump, and an oil system pipeline connected in sequence, characterized in that: The oil storage pipeline includes a straight delivery pipe, a backflow prevention pipe, and an oil storage bend connected in sequence. The auxiliary oil pump and oil system pipeline are equipped with check valves; The horizontal position of the connection end of the anti-backflow pipe and the oil storage bend is higher than the horizontal position of the auxiliary oil pump.

2. The oil storage bend of the auxiliary oil pump for an oxidation blower as described in claim 1, characterized in that: The conveying straight pipe, the anti-backflow pipe, and the oil storage bend are welded together as a single unit.

3. The oil storage bend of the auxiliary oil pump for an oxidation blower as described in claim 2, characterized in that: The anti-backflow pipe is divided into two bends in the middle, and the oil storage bend is a third bend. Each bend is 90°.

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