CN202468226U

CN202468226U - Piston structure with single PEEK (polyetheretherketone) ring

Info

Publication number: CN202468226U
Application number: CN2012201115329U
Authority: CN
Inventors: 王清华; 冯发光; 李祖全; 陈盼江
Original assignee: GUIZHOU YIHUA CHEMICAL LLC
Current assignee: GUIZHOU YIHUA CHEMICAL LLC
Priority date: 2012-03-23
Filing date: 2012-03-23
Publication date: 2012-10-03
Anticipated expiration: 2022-03-23

Abstract

The utility model discloses a piston structure with a single PEEK (polyetheretherketone) ring. The piston structure is provided with a piston body; and the PEEK ring is clamped on the piston main body through a clamping groove. The piston structure with the single PEEK ring provided by the utility model has no need of oil injection and good self-lubrication property, so that high-pressure urea equipment is prevented from being blocked due to carbon collection, and the finished product quality of urea is improved.

Description

A kind of piston structure with single PEEK ring

Technical field

The utility model relates to a kind of piston structure, and it is specifically related to a kind of piston structure with single PEEK ring.

Background technique

At present, as shown in Figure 1, the piston of carbon-dioxide gas compressor still adopts the one-slot and double ring structure; But because of carbon-dioxide gas compressor inter-stage compression ratio is bigger, about 160 °, the life cycle of piston ring is not effectively taken a turn for the better the Pyatyi outlet temperature after putting into operation for a long time; Not only piston ring is easy to wear, and easy-rupturing, and more serious is because of wear of piston-rings; The piston ring powder is fallen into the air valve sealing face, causes the life cycle of air valve also sharply to descend, sometimes also because of pulling the cylinder minute surface after the piston ring breakage; The average life cycle of piston ring is less than 40 days; And seriously restrict the stable operation of carbon-dioxide gas compressor, the more important thing is that to bring the urea product quality low, so be badly in need of now addressing the above problem at urea system.

The model utility content

To the problems referred to above, the purpose of the utility model proposes a kind of piston structure with single PEEK ring.

A kind of piston structure with single PEEK ring, it is provided with a piston only, is arranged with PEEK ring through draw-in groove on the said piston only.

The utility model has the following advantages owing to take above technological scheme:

A kind of piston structure with single PEEK ring of the utility model need not oiling, and self-lubricating property is good, avoids carbon distribution that the urea high-tension apparatus is produced and stops up, and improves the urea product quality.

Description of drawings

Fig. 1 is the structural representation of existing piston structure.

Fig. 2 is a kind of structural representation with piston structure of single PEEK ring of the utility model.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is carried out detailed description.

As shown in Figure 2, for the utility model is a kind of piston structure schematic representation with single PEEK ring, it is provided with a piston only 1, is arranged with a PEEK (polyether-ether-ketone resin) ring 2 through draw-in groove on the said piston only 1.

Piston ring insufficient strength before a kind of piston structure with single PEEK ring of the utility model is directed against; It is first fracture; The shortcoming of back wearing and tearing is transformed piston ring; Change a groove monocycle into by previous one-slot and double ring, ring width changes a ring width 12mm into by previous every ring width 6.5mm, and material changes PEEK (polyether-ether-ketone resin) ring into.After this transformed, five sections piston rings were almost seldom changed, and open and inspect wearing and tearing at every turn and all are no more than 0.5mm.The life cycle of piston ring is greatly enhanced, and the maintenance number of times of five sections outlet air valves is also descended significantly.Guaranteed the long-period stable operation of urea system.

The utility model only carries out illustrative with the foregoing description; The structure of each parts, the position is set and connects and all can change to some extent; On the basis of the utility model technological scheme; All improvement and equivalents of individual component being carried out according to the utility model principle, all should not get rid of the protection domain of the utility model it.

Claims

1. one kind has the piston structure that single PEEK encircles, and it is characterized in that: it is provided with a piston only, is arranged with PEEK ring through draw-in groove on the said piston only.