Quenching cooling device for large seal head

Abstract

The invention discloses a quenching cooling device for a large seal head. The quenching cooling device comprises a groove body. The seal head is placed in the groove body. The groove body is connected with a cooling medium pipeline through a driving pump. A cooling medium is arranged in the cooling medium pipeline. The quenching cooling device further comprises a propeller stirring jet device, a diving stirring jet device, a centrifugal pump water pumping device and a position adjusting device. According to the quenching cooling device, the propeller stirring jet device, the diving stirring jet device and the centrifugal pump water pumping device are arranged in different positions in the groove body, thus district cooling of the outer wall, the inner wall and other areas of the seal head is achieved, and overall circular flowing of the cooling medium in the groove body is also achieved. Therefore, the quenching cooling device can effectively ensure the quenching quality of the seal head, the utilization ratio of the cooling medium is improved, the structure is simple, and the practical operability is high.

Description

technical field [0001] The invention relates to the technical field of quenching and cooling devices, in particular to a quenching and cooling device for large-scale heads. Background technique [0002] Quenching is a heat treatment process used to obtain the expected structure and properties of the workpiece. In order to ensure the quality of quenching, it is necessary to ensure that the surrounding cooling medium on each surface of the workpiece has a sufficient and uniform flow rate during quenching. If the flow rate of the cooling medium is too low, the cooling rate of the workpiece will be low, and the required structure and performance of the workpiece cannot be obtained; the flow rate of the cooling medium around each surface of the workpiece or different areas of a certain surface of the workpiece is uneven, and the cooling rate of different positions on the surface of the workpiece will be different. Even, it is easy to cause uneven hardness on the surface of the w...

AI Technical Summary

Problems solved by technology

The use of a flow limiting plate with a flow hole can form a jet with a higher flow rate and an upward direction in the effective quenching area, but it is only suitable for through-type workpieces such as cylinders with upper and lower openings.

For non-through workpieces that are closed at one or both ends, there is no guarantee that the cooling medium will have a sufficient and uniform flow rate around all surfaces on the workpiece

Take a non-penetrating workpiece such as a large head with one end open and one end closed as an example. If the head opening is placed upwards, the upward jet formed by the restrictor plate can only act on the outer wall of the head, and the cooling medium on the inner wall is basically in a laminar flow state. , which cannot meet the requirements of the liquid flow rate of the cooling medium for quenching the inner wall of the head; if the opening of the head is placed downward, the upward jet formed by the restrictor plate can only act on the inner wall of the head, and the flow rate of the cooling medium on the outer wall is very low, which cannot meet Requirements for cooling medium liquid flow velocity on the outer wall of the head

As a result, the inner and outer walls of the large head cannot be cooled evenly at the same time, which has a very adverse effect on the quenching quality of the workpiece

In addition, the setting of the restrictor plate makes the flow state of the cooling medium in the non-quenching effective area in the quenching tank worse, and it is impossible to form a circulating flow of the cooling medium in the entire quenching water tank, which leads to a very low utilization rate of the cooling medium’s cold energy, and the production cost uneconomical

Images