CN219711744U - Long-life high-pressure piston component - Google Patents
Long-life high-pressure piston component Download PDFInfo
- Publication number
- CN219711744U CN219711744U CN202320272379.6U CN202320272379U CN219711744U CN 219711744 U CN219711744 U CN 219711744U CN 202320272379 U CN202320272379 U CN 202320272379U CN 219711744 U CN219711744 U CN 219711744U
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- piston
- ring
- piston ring
- acting
- double
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- 238000007789 sealing Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 abstract description 9
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 238000007906 compression Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005315 distribution function Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Compressor (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model provides a long-life high-pressure piston part, it includes the piston body, the double-acting piston ring, supporting ring and single-action piston ring, adopt the interval to set up a plurality of annular on the piston body, double-acting piston ring, supporting ring and single-action piston ring are located the annular respectively rather than the cooperation, double-acting piston ring and single-action piston ring are located the both sides of supporting ring respectively, two single-action piston rings are arranged in the outermost at double-action piston both ends, form single double-action integrated configuration mode, the non-sealed side terminal surface of single-action piston ring outwards, be used for the cylinder to inhale the in-process and leak the high-pressure gas that remains between the piston ring because of the piston ring, effectively avoided the high-pressure cylinder, the problem of piston ring's abnormal wear and piston ring fracture, the life of high-pressure piston part has been improved, compressor operation's reliability has been promoted.
Description
Technical Field
The utility model belongs to the technical field of reciprocating compressor piston components, and relates to a long-life high-pressure piston component.
Background
The piston component of the reciprocating compressor, the inner wall of the cylinder and the cylinder cover form a working cavity with variable volume, and the piston makes reciprocating linear motion in the cylinder, so that the processes of air suction, compression, air discharge and the like are realized. The piston part consists of a piston body, a piston rod, a piston nut, a piston ring, a supporting ring and other parts, and the piston body is provided with different numbers of piston rings and supporting rings for sealing a compression medium and supporting the weight of the piston.
The piston ring of the reciprocating compressor is a part for sealing a gap between a cylinder mirror surface and a piston, a piston sealing mechanism is a combination of flow blocking and throttling sealing, when gas leaks from a first ring at a high pressure side to a last ring, the pressure difference born by each ring is quite large, the first ring bears the main pressure difference of sealing, the pressure differences born by other rings are gradually reduced, through analysis of the stress motion condition of the rings in the piston operation process, a small amount of high-pressure gas still enters a closed space between the next piston ring through the first piston ring in the cylinder compression process, and in the cylinder compression cavity suction process, the piston ring is forced to be closely attached to the sealing surface at the other side of the piston ring groove under the action of friction force and the high-pressure gas between the first piston ring and the second piston ring, if the piston ring is of a double-acting structure, the high-pressure gas can not be discharged, the high-pressure gas can force the piston ring overturned, and the piston ring is further caused to be in point contact or linear contact with the piston ring side surface of the cylinder mirror surface and the piston ring groove, the cylinder mirror surface and the piston ring groove are abnormally worn, and the piston ring is broken.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a long-life high-pressure piston part, which is characterized in that a plurality of annular grooves are arranged on a piston body at intervals, a double-acting piston ring, a supporting ring and a single-acting piston ring are respectively positioned in the annular grooves and matched with the annular grooves, the double-acting piston ring and the single-acting piston ring are respectively positioned at two sides of the supporting ring, the single-acting piston ring is positioned at the outer side of the double-acting piston ring to form a single-acting combined structure mode, the end face of the non-sealing side of the single-acting piston ring faces outwards, the leakage of high-pressure gas of the piston ring in the air suction process of a cylinder is avoided, the problems of abnormal abrasion of the high-pressure cylinder and the annular grooves of the piston and the breakage of the piston ring are effectively avoided, the service life of the high-pressure piston part is prolonged, and the running reliability of a compressor is improved.
In order to solve the technical problems, the utility model adopts the following technical scheme: a long-life high-pressure piston part comprises a piston body, a double-acting piston ring, a supporting ring and a single-acting piston ring; the piston body is provided with a plurality of annular grooves at intervals, the double-acting piston ring, the supporting ring and the single-acting piston ring are respectively positioned in the annular grooves and matched with the annular grooves, the double-acting piston ring and the single-acting piston ring are respectively positioned on two sides of the supporting ring, and the single-acting piston ring is positioned on the outer side of the double-acting piston ring.
The double-acting piston rings are symmetrically distributed on two sides by taking the supporting ring as the center, and are arranged in multiple rings.
The number of the single-action piston rings is two, and the single-action piston rings are arranged in the ring grooves at the outermost sides of the two ends of the piston body by taking the supporting ring as the center.
The non-sealing side end face of the single-acting piston ring faces outwards.
The utility model has the main beneficial effects that:
the two sides of the supporting ring are respectively provided with a plurality of double-acting piston rings and single-acting piston rings, the single-acting piston rings are positioned at the outer sides of the double-acting piston rings, the end faces of the non-sealing sides face outwards, and the single-acting piston rings are used for discharging high-pressure gas remained between the piston rings due to leakage of the piston rings in the air suction process of the cylinder, so that the problems of abnormal abrasion of the high-pressure cylinder and the piston ring grooves and breakage of the piston rings are avoided, the service life of high-pressure piston parts is prolonged, and the running reliability of a compressor is improved.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic structural view of the piston body of the present utility model.
FIG. 3 is a schematic view of a double acting piston ring, support ring, single acting piston ring arrangement of the present utility model.
In the figure: a piston body 1, a ring groove 11, a double-acting piston ring 2, a supporting ring 3 and a single-acting piston ring 4.
Detailed Description
As shown in fig. 1-3, a long-life high-pressure piston part comprises a piston body 1, a double-acting piston ring 2, a supporting ring 3 and a single-acting piston ring 4; the piston body 1 is provided with a plurality of annular grooves 11 at intervals, the double-acting piston ring 2, the supporting ring 3 and the single-acting piston ring 4 are respectively positioned in the annular grooves 11 and matched with the annular grooves, the double-acting piston ring 2 and the single-acting piston ring 4 are respectively positioned at two sides of the supporting ring 3, and the single-acting piston ring 4 is positioned at the outer side of the double-acting piston ring 2. When the piston is used, the double-acting piston ring 2 and the single-acting piston ring 4 distributed on the piston body 1 form a single-acting combined structure mode, the end face of the non-sealing side of the single-acting piston ring 4 faces outwards, and the piston is used for discharging high-pressure gas remained between the piston rings due to leakage of the piston rings in the air suction process of the cylinder, so that the problems of abnormal abrasion of the high-pressure cylinder and the piston ring groove and fracture of the piston rings are effectively avoided, the service life of a high-pressure piston part is prolonged, and the running reliability of a compressor is improved.
In a preferred scheme, the double-acting piston ring 2 is symmetrically distributed on two sides by taking the supporting ring 3 as a center, and the double-acting piston ring is arranged in a multi-ring group and forms a combination of choke seal and throttle seal of a piston component together with two single-acting rings. . When the piston ring is used, in the air suction process of the cylinder, the single-acting piston ring at the end part of the piston can release high-pressure air reserved between the piston rings due to leakage of the piston rings, so that the phenomenon that the piston rings are forced to overturn by the reserved high-pressure air, so that the piston rings are in point contact or linear contact with the cylinder mirror surface and the side surfaces of piston ring grooves of the piston rings, the oil distribution function of the piston rings is invalid, the cylinder mirror surface and the piston ring grooves are abnormally worn, and the piston rings are broken can be avoided.
In a preferred scheme, the number of the single-acting piston rings 4 is two, and the single-acting piston rings are symmetrically distributed by taking the supporting ring 3 as the center. When in use, the piston rings 4 arranged on two sides are used for discharging high-pressure gas remained between the piston rings.
In a preferred embodiment, the non-sealing side end face of the single-acting piston ring 4 faces outwards. When the single-acting piston ring is used, the non-sealing side end face of the single-acting piston ring 4 faces outwards, so that the single-acting piston ring 4 can release high-pressure gas in the air suction process of the cylinder.
The above embodiments are merely preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the embodiments and features of the embodiments of the present utility model may be arbitrarily combined with each other without collision. The protection scope of the present utility model is defined by the claims, and the protection scope includes equivalent alternatives to the technical features of the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.
Claims (4)
1. A long-life high-pressure piston part, characterized by: the piston comprises a piston body (1), a double-acting piston ring (2), a supporting ring (3) and a single-acting piston ring (4); the piston body (1) is provided with a plurality of annular grooves (11) at intervals, the double-acting piston ring (2), the supporting ring (3) and the single-acting piston ring (4) are respectively located in the annular grooves (11) and matched with the annular grooves, the double-acting piston ring (2) and the single-acting piston ring (4) are respectively located at two sides of the supporting ring (3), and the single-acting piston ring (4) is located in the annular grooves at the outermost sides of two ends of the piston body (1).
2. The long life high pressure piston member of claim 1 wherein: the double-acting piston ring (2) is symmetrically distributed on two sides by taking the supporting ring (3) as a center, and multiple ring groups are arranged.
3. The long life high pressure piston member of claim 1 wherein: the number of the single-acting piston rings (4) is two, and the single-acting piston rings are arranged in the outermost annular grooves at the two ends of the piston body (1) by taking the supporting ring (3) as the center.
4. The long life high pressure piston member of claim 1 wherein: the non-sealing side end face of the single-acting piston ring (4) faces outwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320272379.6U CN219711744U (en) | 2023-02-21 | 2023-02-21 | Long-life high-pressure piston component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320272379.6U CN219711744U (en) | 2023-02-21 | 2023-02-21 | Long-life high-pressure piston component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219711744U true CN219711744U (en) | 2023-09-19 |
Family
ID=88004109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320272379.6U Active CN219711744U (en) | 2023-02-21 | 2023-02-21 | Long-life high-pressure piston component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219711744U (en) |
-
2023
- 2023-02-21 CN CN202320272379.6U patent/CN219711744U/en active Active
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