CN2916279Y - Insert type piston ring - Google Patents

Abstract

The utility model relates to an inserting-pin piston ring comprising a piston ring body and inserting pins. Two end surfaces of an annulus body are provided with a rectangle groove along the high and middle part. Insert the insert pin into the rectangle groove at one end and inner end of the insert pin is connected with the piston annulus body. The outer end of the insert pin is protruding out the annulus body. The length of the insert pin is about three times of the width of the piston ring. The insert pin length inside the insert annulus body is half of the total length of the insert pin. The utility model makes use of insert pin to seal the clearance of the piston ring and basically solves leakage problem of piston. The utility model has the advantages of simple structure, strong airproofing and low cost and is applicable to various occasions of using piston ring sealing and air cylinder activity toward various to-and-fro piston compressor and gas engine.

Description

A kind of piece insertion type piston ring

Technical field

The utility model relates to a kind of piston ring, belongs to internal-combustion engine or compressor part.

Background technique

In internal-combustion engine or compressor operating process, piston ring plays a part sealing, heat conduction in cylinder.Its minimizing enters the lubricant oil, the minimizing that are compressed in the gas and is compressed gas leak, simultaneously, reduce the friction area of piston in cylinder, the heat that piston is received is transmitted to cylinder wall, guarantee that piston is in rational operating temperature, thereby guarantee the normal operation and the good discharging of motor.But at present the piston ring that uses all has the gap of 0.05mm to 1mm, and promptly the piston ring body is not closed, this gap is to be used for the compensating piston ring to expand in the back that is heated, and the piston ring girth is prolonged and reserves.The existence in gap is rushed down pressurized gas outward, has had a strong impact on the efficient of work mechanism.In internal-combustion engine, also there be exhaust emission aggravation, the problems such as oil life attenuating of making.Be embodied in, gas in the jar flows out from piston ring gap when compression, expansion, has reduced inner cylinder pressure, causes working pressure decline in the cylinder, and output power is reduced.

Summary of the invention

The purpose of this utility model provides a kind of piece insertion type piston ring, has solved the gas leakage problem of piston ring port in the past.

Realize that the technological scheme that the purpose of this utility model is taked is: a kind of piece insertion type piston ring, it is made up of ring body and inserted sheet, all have rectangle groove in the ring body both ends of the surface along the high middle part of ring, be inserted with inserted sheet in the rectangle groove at one end, inserted sheet is inner to be fastenedly connected with the piston ring body, and the inserted sheet outer end protrudes from this end ring body end face.

Described piece insertion type piston ring, the length L that is characterized in inserted sheet is 3 times of piston ring body width, the rectangle groove depth is 1.5 times of piston ring body width, and the inserted sheet length of inserting ring body is 1.5 times of piston ring width, just inserts inserted sheet length in the ring body and be half of inserted sheet total length L.

Described piece insertion type piston ring is characterized in that inserted sheet inserts piston ring body portion and welding of piston ring body or riveted fixing.

The utility model utilizes inserted sheet that piston ring side clearance is shut, and has solved piston ring gas leakage problem substantially.Be applicable to that all kinds of reciprocating-piston compressors, internal-combustion engine etc. use piston ring packing and movement cylinder occasion.

The technique effect that the utility model is obtained is: solved piston ring gas leakage problem, according to test, cylinder pressure can improve about 20%, and the internal-combustion engine output power improves about 15%; Discharging also has reduction in various degree.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the left side view of Fig. 1.

Fig. 3 is the enlarged diagram of inserted sheet.

Fig. 4 is the A portion enlarged view of Fig. 2.

Embodiment

The embodiment who provides below in conjunction with accompanying drawing and accompanying drawing is described further the utility model.

The utility model processes with present general piston ring.Referring to Fig. 1, shown in Figure 2, the piece insertion type piston ring, mainly comprise the piston ring body 1 that has breach in the structure, as shown in Figure 4, both ends of the surface at piston ring ring body 1 adopt the method for machining to have rectangle groove 3 in the high H of ring body upper edge diametric(al), the width of rectangle groove 3 is less than 1/3 of the ring body height H, the degree of depth is about 1.5 times of (see figure 1)s of ring body width B-1, see Fig. 4, half of inserted sheet 2 is inserted in the rectangle groove of piston ring ring body one end face, by welding or riveted joint the inserted sheet of insertion and piston ring ring body fastened as one.See Fig. 3, the thickness of inserted sheet 2 is slightly less than the width of rectangle groove 3, and the width B of inserted sheet-2 equals ring body width B-1, and the inserted sheet total length L equals 3 times of ring body width B-1, and inserted sheet radius of arc R-2 is identical with piston ring radius of arc R-1.During use, the outer end that protrudes from the inserted sheet of piston ring body fixed end face is inserted in the rectangle groove of being opened piston ring body other end, like this, even in working order, still play seal action after the piston ring body two breach closures by inserted sheet, make piston ring become the overall structure of sealing, neither influence is used, and has improved sealing again.

Claims (3)

1, a kind of piece insertion type piston ring, comprise the ring body (1) that has breach in the structure, it is characterized in that all having rectangle groove (3) along the high middle part of ring in the ring body both ends of the surface, be inserted with inserted sheet (2) in the rectangle groove at one end, inserted sheet (2) is inner to be fastenedly connected with the piston ring body, and inserted sheet (2) outer end protrudes from the end face of this end ring body.

2, by the described piece insertion type piston ring of claim 1, the length L that it is characterized in that inserted sheet (2) is 3 times of piston ring body width, and rectangle groove (3) is 1.5 times of piston ring body width deeply, and the inserted sheet length in the insertion ring body is half of inserted sheet total length L.

3,, it is characterized in that inserted sheet (2) and piston ring body (1) welding or riveted joint by claim 1 or 2 described piece insertion type piston rings.