CN202381291U - High-pressure stage piston mechanism - Google Patents
High-pressure stage piston mechanism Download PDFInfo
- Publication number
- CN202381291U CN202381291U CN2011204346602U CN201120434660U CN202381291U CN 202381291 U CN202381291 U CN 202381291U CN 2011204346602 U CN2011204346602 U CN 2011204346602U CN 201120434660 U CN201120434660 U CN 201120434660U CN 202381291 U CN202381291 U CN 202381291U
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- CN
- China
- Prior art keywords
- piston
- ring
- piston ring
- cylinder sleeve
- pressure stage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a high-pressure stage piston mechanism, which comprises a piston rod. The piston rod comprises a piston connecting portion, a cylinder sleeve matching portion and a piston ring portion. The piston connecting portion is fixedly connected with the piston, a piston pin is radially arranged on the piston, and at least one piston ring component is arranged on the piston ring portion and comprises a piston ring, two lining rings and spacer pads, wherein the piston ring is sleeved on the piston ring portion, the two lining rings are sleeved on the piston ring, and the spacer pads are sleeved on the piston ring portion and positioned on the outer sides of the piston ring and the lining rings. A retainer ring is arranged between the piston ring component the closest to one side of the cylinder sleeve matching portion and a first shaft shoulder, a locking nut is arranged at the tail end of the piston ring portion in a threaded manner, and a stop washer is arranged between the locking nut and the outermost piston ring component. Quite high positional accuracy of the high-pressure stage piston mechanism and a cylinder can be kept, so that the sealing effect of the piston rings is improved, high pressure is not easy to leak, and the pressure of high-pressure gas is increased to reach displacement.
Description
Technical field
The utility model relates to a kind of guide mechanism, particularly relates to a kind of fourth stage high cylinder pressure level piston mechanism that is used for fan-shaped high pressure compressor.
Background technique
Fan-shaped high pressure compressor comprises crankcase, the fan-shaped level Four cylinder part that is distributed with on the crankcase, and the maximum pressure of compressor fourth stage cylinder reaches 30MPa, and air displacement is 0.5m
3/ min.Fourth stage cylinder part by reason of heavy pressure, cylinder diameter is little, and is high to the position accuracy demand of gas seal component movement.In the existing technology; Therefore the piston of third and fourth grade of cylinder is connected through piston rod with the bent axle of compressor, causes piston in movement process, to be difficult to guarantee with the positional accuracy of cylinder block, thereby causes pressurized gas to leak easily; Influence the efficient of gas compression, also reduced reliability.
Therefore when those skilled in the art are devoted to develop a kind of pressurized air, make the high high pressure stage piston mechanism of gas seal parts and cylinder block relative positional accuracy.
The model utility content
Because the above-mentioned defective of existing technology, the utility model technical problem to be solved provides and makes gas seal parts and the high high pressure stage piston mechanism of cylinder block relative positional accuracy.
For realizing above-mentioned purpose, the utility model provides a kind of high pressure stage piston mechanism, comprises the gas seal parts, it is characterized in that: said gas seal parts are piston rod; Said piston rod comprises piston joint, cylinder sleeve auxiliary section and piston ring portion; The junction of said cylinder sleeve auxiliary section and piston ring portion is provided with first shaft shoulder; The junction of said cylinder sleeve auxiliary section and said piston joint is provided with second shaft shoulder; Said piston joint is fixedly connected with piston; Said piston has been disposed radially wrist pin; Said piston ring portion is provided with at least one group of piston-ring packing; Said piston-ring packing comprises the piston ring that is sleeved on the said piston ring portion, is sleeved on two inner bushing rings on the said piston ring, and is sleeved on the said piston ring portion, is positioned at the separation pad in the said piston ring and the inner bushing ring outside; Near between the piston-ring packing of said cylinder sleeve auxiliary section one side and said first shaft shoulder baffle ring being set; The tail end screw-thread fit of said piston ring portion has lock nut; Be provided with lock washer between said lock nut and the outermost piston-ring packing.
Adopt said structure; Because the diameter of piston is bigger, and directly do not bear high pressure other, so during pressurized air; The positional accuracy of piston and cylinder body relatively guarantees; Because piston rod is fixedly connected with piston, therefore can pass through the coaxality between assurance piston rod and the piston, guarantee piston rod and hold the positional accuracy between the cylinder sleeve of piston rod.
Preferable, said piston joint stretches into the head of said piston, and is fixedly connected with said piston with said second shaft shoulder through locking nut.
Be the reliability that guarantees that piston is connected with crankshaft-link rod, two outer ends of said wrist pin are provided with back-up ring.
For ease of lubricating of piston rod, said cylinder sleeve auxiliary section is provided with at least one annular groove.
Preferable, said cylinder sleeve auxiliary section is provided with two annular grooves.
Preferable, said cylinder sleeve auxiliary section and said piston ring portion arc transition.
The beneficial effect of the utility model is: the utility model can guarantee the high pressure stage gas seal, is convenient to high pressure stage small bore piston ring convenient disassembly simultaneously.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further:
Embodiment 1: as shown in Figure 1, a kind of high pressure stage piston mechanism comprises the gas seal parts, and the gas seal parts are piston rod 10, and piston rod 10 comprises piston joint 101, cylinder sleeve auxiliary section 102 and piston ring portion 103.Cylinder sleeve auxiliary section 102 is provided with two annular grooves, in order to hold the lubricant oil of lube pistons bar.Cylinder sleeve auxiliary section 102 and piston ring portion 103 arc transition.
Cylinder sleeve auxiliary section 102 is provided with first shaft shoulder 11 with the junction of piston ring portion 103, and cylinder sleeve auxiliary section 102 is provided with second shaft shoulder 12 with the junction of piston joint 101.
Piston joint 101 stretches into the head of piston 1, and is fixedly connected with piston 1 with second shaft shoulder 12 through locking nut 13.Piston 1 has been disposed radially wrist pin 3, and two outer ends of wrist pin 3 are provided with back-up ring 2.
Piston ring portion 103 is provided with four groups of piston-ring packings; Piston-ring packing comprises the piston ring 7 that is sleeved on the piston ring portion 103, is sleeved on two inner bushing rings 6 on the piston ring, and is sleeved on the piston ring portion 103, is positioned at the separation pad 5 in the piston ring 7 and inner bushing ring 6 outsides.Near between the piston-ring packing of cylinder sleeve auxiliary section 102 1 sides and first shaft shoulder 11 baffle ring 4 being set, the tail end screw-thread fit of piston ring portion 103 has lock nut 9, is provided with lock washer 8 between lock nut 9 and the outermost piston-ring packing.
During the guide piston arrangement works, piston rod 10 moves in cylinder liner, thus pressurized air.Because piston 1 and the diameter of cylinder that cooperates with it are bigger, and directly do not bear high pressure, so the ratio of the positional accuracy between piston 1 and the cylinder body is easier to guarantee.Simultaneously; Because piston rod 10 is fixedly connected with piston 1, thus assurance is compressed, the piston rod 10 of sealing gas in whole motion process, and have higher positional accuracy between the cylinder sleeve; Thereby improve the sealing effect of piston rod upper piston ring; Make high-pressure be difficult for leaking, improve the pressure of pressurized gas, reach air displacement.
More than describe the preferred embodiment of the utility model in detail.Should be appreciated that those of ordinary skill in the art need not creative work and just can make many modifications and variation according to the design of the utility model.Therefore, all technician in the art according to the design of the utility model on the basis of existing technology through the available technological scheme of logical analysis, reasoning, or a limited experiment, all should be in determined protection domain by claims.
Claims (6)
1. a high pressure stage piston mechanism comprises the gas seal parts, it is characterized in that: said gas seal parts are piston rod (10); Said piston rod (10) comprises piston joint (101), cylinder sleeve auxiliary section (102) and piston ring portion (103);
Said cylinder sleeve auxiliary section (102) is provided with first shaft shoulder (11) with the junction of piston ring portion (103); Said cylinder sleeve auxiliary section (102) is provided with second shaft shoulder (12) with the junction of said piston joint (101);
Said piston joint (101) is fixedly connected with piston (1); Said piston (1) has been disposed radially wrist pin (3);
Said piston ring portion (103) is provided with at least one group of piston-ring packing; Said piston-ring packing comprises the piston ring (7) that is sleeved on the said piston ring portion (103), is sleeved on two inner bushing rings (6) on the said piston ring, and is sleeved on said piston ring portion (103) and goes up, be positioned at the separation pad (5) outside said piston ring (7) and the inner bushing ring (6); Near between the piston-ring packing of said cylinder sleeve auxiliary section (102) one sides and said first shaft shoulder (11) baffle ring (4) being set; The tail end screw-thread fit of said piston ring portion (103) has lock nut (9); Be provided with lock washer (8) between said lock nut (9) and the outermost piston-ring packing.
2. high pressure stage piston mechanism as claimed in claim 1 is characterized in that: said piston joint (101) stretches into the head of said piston (1), and is fixedly connected with said piston (1) with said second shaft shoulder (12) through locking nut (13).
3. according to claim 1 or claim 2 high pressure stage piston mechanism, it is characterized in that: two outer ends of said wrist pin (3) are provided with back-up ring (2).
4. according to claim 1 or claim 2 high pressure stage piston mechanism, it is characterized in that: said cylinder sleeve auxiliary section (102) is provided with at least one annular groove.
5. high pressure stage piston mechanism as claimed in claim 4 is characterized in that: said cylinder sleeve auxiliary section (102) is provided with two annular grooves.
6. according to claim 1 or claim 2 high pressure stage piston mechanism is characterized in that: said cylinder sleeve auxiliary section (102) and said piston ring portion (103) arc transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204346602U CN202381291U (en) | 2011-11-07 | 2011-11-07 | High-pressure stage piston mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204346602U CN202381291U (en) | 2011-11-07 | 2011-11-07 | High-pressure stage piston mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202381291U true CN202381291U (en) | 2012-08-15 |
Family
ID=46629800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204346602U Expired - Fee Related CN202381291U (en) | 2011-11-07 | 2011-11-07 | High-pressure stage piston mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202381291U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807143A (en) * | 2014-02-28 | 2014-05-21 | 成都大漠石油机械有限公司 | Long-service-life piston head |
-
2011
- 2011-11-07 CN CN2011204346602U patent/CN202381291U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807143A (en) * | 2014-02-28 | 2014-05-21 | 成都大漠石油机械有限公司 | Long-service-life piston head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20141107 |
|
| EXPY | Termination of patent right or utility model |