CN214196590U - Piston ring for reciprocating compressor cylinder - Google Patents
Piston ring for reciprocating compressor cylinder Download PDFInfo
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- CN214196590U CN214196590U CN202022957341.1U CN202022957341U CN214196590U CN 214196590 U CN214196590 U CN 214196590U CN 202022957341 U CN202022957341 U CN 202022957341U CN 214196590 U CN214196590 U CN 214196590U
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- ring
- piston ring
- ring body
- cylinder
- reciprocating compressor
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Abstract
The utility model provides a piston ring for reciprocating compressor cylinder, including ring body and interior inserts, the circumference that interior inserts encircleed the ring body is inlayed and is established in the ring body, the ring body adopts the polytetrafluoroethylene material, interior inserts adopts the steel material. The utility model discloses a mode of inserts in embedding in the ring body can strengthen the rigidity of piston ring again when guaranteeing piston ring wear resistance, improves the initial sealed specific pressure of piston ring to improve the sealing performance of piston ring and cylinder, can play energy saving and consumption reduction's effect.
Description
Technical Field
The utility model belongs to the technical field of gas compressor, especially, relate to a piston ring for reciprocating compressor cylinder.
Background
In the working process of the reciprocating compressor, the working cavity of the cylinder needs to be ensured to be sealed so as to change the volume and improve the gas pressure, and the piston ring is a dynamic sealing structure for sealing the gap between the piston and the cylinder.
When the compressor is in operation, the piston ring is pushed to the lower pressure side (P2) under the action of the pressure difference between the front pressure (P1) and the rear pressure (P2), namely, the gas leakage along the end face of the ring groove is sealed. The pressure on the inner circle of the piston ring is approximately equal to the pressure P1 before the ring, which is greater than the average pressure on the outer circle of the piston ring, thus creating a pressure differential that presses the piston ring against the cylinder face to prevent gas leakage along the cylinder wall. Therefore, when the piston ring is installed in the cylinder, the piston ring is required to generate enough pre-pressure on the cylinder wall, and a gap is reserved between the piston ring installed in the piston and the wall of the cylinder wall, so that pressure difference can be formed, and sealing is realized. For a large-diameter piston ring with the diameter larger than 500mm, the sealing effect is poor due to insufficient elasticity.
SUMMERY OF THE UTILITY MODEL
In view of the above disadvantages of the prior art, an object of the present invention is to provide a piston ring for a reciprocating compressor cylinder, which is used to solve the problem that the pre-pressure of the piston ring with a large diameter to the cylinder wall is insufficient and the sealing cannot be realized in the prior art.
In order to achieve the above objects and other related objects, the utility model provides a piston ring for reciprocating compressor cylinder, including ring body and interior inserts, the ring body is the annular, the circumference that interior inserts encircleed the ring body is inlayed and is established in the ring body, the ring body adopts the polytetrafluoroethylene material, interior inserts adopts the steel material.
Further, the ring body is provided with a first lap joint part and a second lap joint part, and the first lap joint part is lapped with the second lap joint part.
Further, first overlap joint portion includes that first overlap joint limit and first end a platform, second overlap joint portion includes that second overlap joint limit and second end a platform, first overlap joint limit and the mutual laminating of second overlap joint limit, and the tip on first overlap joint limit ends the position by the second end a platform, and the tip on second overlap joint limit ends the position by first end a platform.
Furthermore, the cross section of the inner insert is rectangular, the cross section of the ring body is provided with a rectangular groove matched with the rectangular groove, the ring body wraps the inner insert, and the inner ring of the ring body forms the inner ring of the piston ring.
Furthermore, the cross section of the inner insert is a cross-shaped groove, the cross section of the ring body is provided with a cross-shaped bulge matched with the cross-shaped groove, and the inner ring of the inner insert forms the inner ring of the piston ring.
Furthermore, the cross section of the inner insert is a dovetail groove, the cross section of the ring body is provided with a dovetail part matched with the dovetail groove, and the inner ring of the inner insert forms the inner ring of the piston ring.
Further, the insert and the ring body are integrally formed.
Further, the outer diameter of the piston ring is greater than or equal to 500 mm.
Further, the height of the piston ring is greater than or equal to 12mm, and the thickness between the outer ring and the inner ring of the piston ring is greater than or equal to 15 mm.
Further, the upper edge and the lower edge of the piston ring are both provided with round corners.
As described above, the utility model discloses a piston ring for reciprocating compressor cylinder has following beneficial effect:
through the mode of inserts in the embedding in the ring body, can strengthen the rigidity of piston ring again when guaranteeing piston ring wear resistance, improve the initial sealed specific pressure of piston ring to improve the sealing performance of piston ring and cylinder, can play energy saving and consumption reduction's effect.
Drawings
Fig. 1 is a schematic view of an overall structure provided in a first embodiment of the present invention;
FIG. 2 is a side view of FIG. 1;
fig. 3 is a schematic view of an overall structure provided in the second embodiment of the present invention;
fig. 4 is a schematic view of an overall structure provided by the third embodiment of the present invention.
Description of reference numerals
1-a ring body; 11-a first lap joint; 12-a second lap joint; 13-chamfering; 14-round corner; 2-insert.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
Please combine fig. 1 and fig. 2 to show, the utility model provides a piston ring for reciprocating compressor cylinder, including ring body 1 and interior inserts 2, ring body 1 is the annular, interior inserts 2 encircles ring body 1 circumference and inlays and establish in ring body 1, ring body 1 adopts the polytetrafluoroethylene material, interior inserts 2 adopts the steel material.
Specifically, the embedded part plays a role in supporting the ring body 1 and provides the overall rigidity of the piston ring, so that the piston ring can generate enough pre-pressure on the cylinder wall, dynamic sealing is realized, and the defect of insufficient pre-pressure on the cylinder wall by the piston ring is overcome.
And, because the surface is the ring body 1 that adopts the polytetrafluoroethylene material, through ring body 1 and cylinder inner wall contact, adopt non-metallic surface, can realize oil-free lubrication.
Wherein, the inner insert 2 and the ring body 1 are integrally formed. This kind of structure, on the one hand guarantee overall structure to make interior inserts 2 and ring body 1 exert effect jointly, on the other hand, the manufacturing and processing of being convenient for.
Wherein, the ring body 1 is provided with a first lap joint part 11 and a second lap joint part 12, and the first lap joint part 11 is overlapped with the second lap joint part 12. With the structure, the annular state of the ring body 1 can be maintained after the inner insert 2 is embedded into the ring body 1. Wherein, the two ends one end that the ring body 1 docks has first overlap joint portion 11, and the other end has second overlap joint portion 12, and first overlap joint portion 11 and the overlap joint of second overlap joint portion 12.
Preferably, the first overlapping part 11 includes a first overlapping edge and a first stop platform, the second overlapping part 12 includes a second overlapping edge and a second stop platform, the first overlapping edge and the second overlapping edge are attached to each other, the end of the first overlapping edge is stopped by the second stop platform, and the end of the second overlapping edge is stopped by the first stop platform. This kind of structure can guarantee that first overlap joint portion 11 and second overlap joint portion 12 realize the cooperation overlap joint, and the overlap joint simple structure, the overlap joint is firm.
Referring to fig. 1, which is a schematic structural view of a piston ring according to an embodiment i, a cross section of the insert 2 is rectangular, a cross section of the ring body 1 has a rectangular groove adapted to the rectangular shape, the ring body 1 wraps the insert 2, and an inner ring of the ring body 1 forms an inner ring of the piston ring. Specifically, the insert 2 is located at the center of the ring body 1 in the axial direction, the distance N1 between the inner ring of the insert 2 and the inner ring of the ring body 1 is 3mm, and chamfers 13 are provided on the end surfaces of the two sides of the inner ring of the ring body 1, in this embodiment, the chamfers 13 are set to be 45 °.
Referring to fig. 3, which is a schematic view of a piston ring structure according to a second embodiment, the cross section of the insert 2 is a cross-shaped groove, the cross section of the ring body 1 has a cross-shaped protrusion adapted to the cross-shaped groove, and the inner ring of the insert 2 forms the inner ring of the piston ring. Specifically, the inner insert 2 is matched with the ring body 1 through a cross-shaped groove and a cross-shaped protrusion, the distance N2 between the groove bottom of the cross-shaped groove in the inner insert 2 and the inner ring of the inner insert 2 is 3mm, and chamfers 13 are arranged on the end surfaces of the two sides of the inner ring of the inner insert 2, wherein the chamfers 13 are arranged at 45 degrees in the embodiment.
Referring to fig. 4, which is a schematic view of a piston ring structure according to a third embodiment, a cross section of the insert 2 is a dovetail groove, a cross section of the ring body 1 has a dovetail portion adapted to the dovetail groove, and an inner ring of the insert 2 forms an inner ring of the piston ring. Specifically, the inner insert 2 is matched with the ring body 1 through a dovetail groove and a dovetail part, an included angle beta between the side wall of the dovetail groove on the inner insert 2 and the top of the groove is 60 degrees, chamfers 13 are arranged on the end surfaces of two sides of the inner ring of the inner insert 2, and in the embodiment, the chamfers 13 are set to be 45 degrees.
This piston ring structure is particularly suitable for large diameter piston rings, wherein the outer diameter D of the piston ring is greater than or equal to 500 mm.
In each of the above embodiments, the height H of the piston ring is 12mm or more, and the thickness T between the outer ring and the inner ring of the piston ring is 15mm or more. The structure is convenient for ensuring the integral rigidity performance of the piston ring.
In addition, in order to facilitate smooth installation of the piston ring in the installation process with the cylinder, the upper edge and the lower edge of the piston ring are provided with fillets 14. In the above embodiment, the rounded corners 14 are 1.5 mm.
To sum up, in the embodiment of the utility model provides a pair of piston ring for reciprocating compressor cylinder, through the mode of inserts in the embedding in the ring body, can strengthen the rigidity of piston ring again when guaranteeing piston ring wear resistance, improve the initial sealed specific pressure of piston ring to improve the sealing performance of piston ring and cylinder, can play energy saving and consumption reduction's effect.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A piston ring for a cylinder of a reciprocating compressor, characterized in that: including ring body and interior inserts, the ring body is the annular, the circumference that interior inserts encircleed the ring body is inlayed and is established in the ring body, the ring body adopts the polytetrafluoroethylene material, interior inserts adopts the steel material.
2. A piston ring for a cylinder of a reciprocating compressor according to claim 1, characterized in that: the ring body is provided with a first lap joint part and a second lap joint part, and the first lap joint part is lapped with the second lap joint part.
3. A piston ring for a cylinder of a reciprocating compressor according to claim 2, characterized in that: first overlap joint portion includes first overlap joint limit and first end a platform, second overlap joint portion includes that second overlap joint limit and second end a platform, first overlap joint limit laminates with the second overlap joint limit each other, and the tip on first overlap joint limit ends the position by the second and ends the position by the first end a platform, and the tip on second overlap joint limit ends the position by the first end a platform.
4. A piston ring for a cylinder of a reciprocating compressor according to claim 1, characterized in that: the cross section of the inner insert is rectangular, the cross section of the ring body is provided with a rectangular groove matched with the rectangular groove, the ring body wraps the inner insert, and the inner ring of the ring body forms the inner ring of the piston ring.
5. A piston ring for a cylinder of a reciprocating compressor according to claim 1, characterized in that: the cross section of the inner insert is a cross-shaped groove, the cross section of the ring body is provided with a cross-shaped bulge matched with the cross-shaped groove, and the inner ring of the inner insert forms the inner ring of the piston ring.
6. A piston ring for a cylinder of a reciprocating compressor according to claim 1, characterized in that: the cross section of the inner insert is a dovetail groove, the cross section of the ring body is provided with a dovetail part matched with the dovetail groove, and the inner ring of the inner insert forms the inner ring of the piston ring.
7. Piston ring for a cylinder of a reciprocating compressor according to any one of claims 1 to 6, characterized in that: the insert and the ring body are integrally formed.
8. Piston ring for a cylinder of a reciprocating compressor according to any one of claims 1 to 6, characterized in that: the outer diameter of the piston ring is greater than or equal to 500 mm.
9. Piston ring for a cylinder of a reciprocating compressor according to any one of claims 1 to 6, characterized in that: the height of the piston ring is greater than or equal to 12mm, and the thickness between the outer ring and the inner ring of the piston ring is greater than or equal to 15 mm.
10. Piston ring for a cylinder of a reciprocating compressor according to any one of claims 1 to 6, characterized in that: and fillets are arranged at the upper edge and the lower edge of the piston ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022957341.1U CN214196590U (en) | 2020-12-09 | 2020-12-09 | Piston ring for reciprocating compressor cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022957341.1U CN214196590U (en) | 2020-12-09 | 2020-12-09 | Piston ring for reciprocating compressor cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214196590U true CN214196590U (en) | 2021-09-14 |
Family
ID=77651661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022957341.1U Active CN214196590U (en) | 2020-12-09 | 2020-12-09 | Piston ring for reciprocating compressor cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214196590U (en) |
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2020
- 2020-12-09 CN CN202022957341.1U patent/CN214196590U/en active Active
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