SU24617A1 - Apparatus for cooling pistons of internal combustion engines - Google Patents

Description

The invention relates to devices for cooling pistons of internal combustion engines, using telescopic tubes for supplying the piston to the cavity and draining cooling water to the outside.

Telescopic cooling of the piston of the engine. Internal combustion is widespread in mechanical engineering, but, however, all known telescopic devices have one significant disadvantage in that the surface of the tube friction is the same as in the oil seal that removes oil from the tube the tube in the engine crankcase during its lowest position) and in the water seal that prevents water from flowing out of the hood. Thanks to such a device, oil residues that have not been removed by an oil solo papad are poured into the water and shrink, resulting in high oil consumption and, as is the case in diesel locomotives, contamination of cooling water and water surfaces of pistons with oil.

In the proposed device, in order to eliminate the aforesaid deficiency, the movable telescopic link is made in the form of a twin tube and is provided at the top with an annular thickening with a labyrinth seal preventing the penetration of cooling water to the outer noBepxHOCTJj tube; leaked from the water.

through an annular collector located with a certain gap around the tube, is retracted to the outside, in order to prevent water from mixing with the oil that has leaked through the gland placed at the end of the moving tube.

In FIG. 1 shows a vertical section through a device for cooling the pistons of internal combustion engines; FIG. 2 and 3 are the same different forms of compaction; FIG. 4 - the same removable outer tube, FIG. 5 - the same oil cutting gland.

The device for cooling the pistons of internal combustion engines consists of a movable telescopic link 1 (Fig. 1) formed from an inner tube connected at its lower end to an engine piston bracket (not shown in the drawing), and an upper end passing through annular thickening 5 connected with the other tube 2, below the free-hanging and passing through the gland M. The cooling piston water flows through the nozzle 6 into the cap 7, the air space 9 of which serves to soften hydraulic shocks. Next, the water through the pipe 10 goes up and, falls into the internal cavity of the movable link /, through the bracket of the engine piston into the bottom of the piston. Since the link is associated with the piston, the entire tubing system, as well as the annular bulge 3, with the labyrinth seal moves according to the movement of the engine piston. During this movement, in moments when tube 2 is in the lowest position, splashes from the shaft in the crank box envelop the tube with a layer of oil. When the tube moves upward, the oil layer is removed by the gland 14, but only partially, since it is impossible to remove a thin layer of lubricant by any glands. The oil passed by the gland remains on the tube 2 and, during the return stroke of the piston downwards, is partially removed by the gland 15 b through the tube 16 and is led back to the crankcase. The annular bulge 5, made in the form of a labyrinth metal piston, has a larger diameter than the outer diameter of the tube 2 so that the oil from the outer surface of the tube 2 under no circumstances can pass to the inner surface of the tube 5, since from there it is necessary will be washed away with hot water at the lower position of the telescopic tube. Water that seeps through the thickening 5 also cannot get onto the oil layer, since, on the one hand, due to the larger diameter of the tube 5, and on the other, the beveled edge 4 at the bottom of the thickening 3 flows down the inner surface of the tube 5 into the ring collector / /, located with a certain gap around the mobile telescopic tube 2, and from there along tube 12 into the water tank. Thus, neither oil can get into the water, nor water gets into the oil, and all losses through the water and oil seals flow each way to the respective tanks.

Thickening 3 can be made in the form of a leather cap, screwed with a nut with a female thread (Fig. 2) or a nut with an external thread (Fig. 3). FIG. 3 only one tube is applied; since in the presence of a moving omentum, large distortions cannot form and the double telescope is superfluous.

The outer tube 5 can be removable (Fig. 4), and for strengthening in the case of the cap 7, its upper conic head

it rests on a corresponding seat in the opening of the cap 7, and the lower end is secured with a sealing nut 13 and a soft gasket.

The metal oil scraper seal shown in FIG. 5, consists of split Babit rings 18 and intermediate rings 19, pressed from above by spring 20, tongue 21 and nut 22, which the gland allows for free lateral movement of the tube.

The subject matter of the invention.

Claims (1)

1. A device for cooling the pistons of internal combustion engines, with an example. Telescopic tubes for supplying cooling water to the piston cavity and diverting cooling water to the outside, characterized in that, in order to prevent the cooling water from mixing with lubricating oil, the movable telescopic link /, made in the form of a double tube (Fig. 1), is provided in its end portion facing to the feedwater or to the cooling water outlet pipe 10, which acts as a stuffing box by an annular thickening 3 with a labyrinth seal, which thickening has a slanted edge 4 in the lower part for the direction that has leaked through the gland of water through the walls of the fixed telescopic tube 5, followed by diversion of water to the outside using an annular collector // located with some clearance around the movable telescopic tube, which device aims to separate the oil seal 14, which is left at the other end of the movable tube, partially the walls of the latter, from the leaked water with the help of the gap Between the telescopic tubes, due to thickening 3. 2, i the device according to claim 1, using a removable outer tube 5, provided, in order to strengthen it in the housing, in the upper part supported by a conical saddle with a conical head and secured by means of a sealing nut / 5 (Fig. 4). A.L. to the author's testimony of S. I. Kholopov and I. A. Agatov No. 24617