| 摘要 |
The invention relates to improved oil cooler welding joints arranged on the two sides of a core of an oil cooler to connect the core of the oil cooler with a water chamber. Each improved oil cooler welding joint is characterized in that sealing trenches are formed in the connection contact face of the welding joint and the water chamber, and sealing rings are arranged in the sealing trenches. Compared with the prior art, the improved oil cooler welding joints are applied in press fitting of the oil cooler and the water chamber, the pressing area can be increased, pressing airtightness is improved accordingly, product leakage cannot occur even when the working condition is severe, and the welding joints can bear higher pressure. In addition, threads for assembling welding joints are likely to be damaged and scrapped when the existing joints are assembled multiple times, and it is difficult to achieve the long-term normal working condition use purpose even though the existing joints are assembled; and due to the fact that the sealing rings are additionally arranged on each improved oil cooler welding joint, and after-sale services caused by leakage due to assembly are avoided. |
