CN214888853U - Sealing element of piston type energy accumulator - Google Patents
Sealing element of piston type energy accumulator Download PDFInfo
- Publication number
- CN214888853U CN214888853U CN202121399725.4U CN202121399725U CN214888853U CN 214888853 U CN214888853 U CN 214888853U CN 202121399725 U CN202121399725 U CN 202121399725U CN 214888853 U CN214888853 U CN 214888853U
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- Prior art keywords
- ring
- seal
- piston
- sealing
- sealing element
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- 238000007789 sealing Methods 0.000 title claims abstract description 81
- 239000010720 hydraulic oil Substances 0.000 claims description 15
- -1 polytetrafluoroethylene Polymers 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 239000007788 liquid Substances 0.000 description 6
- 238000002955 isolation Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
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- Sealing Devices (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
The utility model provides a sealing element of a piston type energy accumulator, which comprises a first sealing element and a second sealing element; the first sealing element comprises a first sealing ring, a first O-shaped ring and a first star-shaped ring, the first sealing ring is of a concave structure, the first sealing ring is connected with the first star-shaped ring, and the first O-shaped ring is arranged close to the first sealing ring; the second sealing element comprises a second sealing ring and a second O-shaped ring, the second sealing ring is of a convex structure, and the second O-shaped ring is arranged close to the second sealing ring; by using a double seal, the risk of leakage is reduced.
Description
Technical Field
The utility model relates to a sealed field, concretely relates to piston accumulator's sealing member.
Background
The piston type energy accumulator belongs to one of hydraulic isolation type energy accumulators, is an important auxiliary element in a hydraulic system, and has very obvious effects on aspects of assisting a power supply, absorbing pulsation, reducing noise, emergently powering a source, absorbing hydraulic impact and the like. The working principle of the piston type energy accumulator is the same as that of a liquid-gas isolation type energy accumulator, the compressibility of gas and liquid is mainly utilized, when the gas pressure is high, the pressure of the liquid is converted into gas internal energy, and when the gas pressure is reduced, the gas internal energy is released to do work outwards. The piston type energy accumulator separates gas from liquid by the piston, and the possibility of oxidation of the liquid is reduced due to the sealing relation between the piston and the inner wall of the cylindrical energy accumulator.
The inventor of the utility model finds that the piston type energy accumulator has higher requirement on the processing precision of the inner wall of the shell, and if the precision is not enough, the leakage is easily caused; the sealing element of the piston accumulator is matched with the shell, so that the influence on the integral piston accumulator is very large. Therefore, it is necessary to develop a seal for a piston accumulator.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve above-mentioned problem, provide a sealing member of piston accumulator, including first sealing member and second sealing member, through adopting double seal, reduce the risk of seepage.
In order to achieve the purpose, the utility model adopts the following technical scheme.
A seal for a piston accumulator includes a first seal and a second seal; the first sealing element comprises a first sealing ring, a first O-shaped ring and a first star-shaped ring, the first sealing ring is of a concave structure, the first sealing ring is connected with the first star-shaped ring, and the first O-shaped ring is arranged close to the first sealing ring; the second sealing element comprises a second sealing ring and a second O-shaped ring, the second sealing ring is of a convex structure, and the second O-shaped ring is close to the second sealing ring.
Furthermore, the sealing element of the piston accumulator is arranged on a piston of the piston accumulator, and hydraulic oil is arranged in the piston accumulator.
Further, the second seal is disposed proximate to the hydraulic oil.
Further, the first seal is disposed away from the hydraulic oil.
Further, the first sealing element comprises two first O-shaped rings, the first O-shaped rings are arranged close to the piston, and the first sealing rings are arranged far away from the piston.
Further, the second seal includes one of the second "O" rings disposed proximate to the piston and the second sealing ring disposed distal to the piston.
Furthermore, the convex structure of the second sealing ring is asymmetric, and the convex structure is far away from the second O-shaped ring.
Further, the first sealing ring is made of polytetrafluoroethylene.
Further, the first O-shaped ring is made of rubber.
Further, the second sealing ring is made of polytetrafluoroethylene.
The utility model relates to a positive effect of piston accumulator's sealing member is:
the utility model comprises a first sealing element and a second sealing element, and the double sealing is adopted, so that the risk of leakage is reduced, and irrecoverable economic loss caused by leakage is avoided; meanwhile, an asymmetric convex structure is adopted, the requirement on the machining precision of the piston type energy accumulator matched with the asymmetric convex structure is not required to be too high, and the production cost can be reduced.
Drawings
Fig. 1 is a schematic view of a first sealing member according to an embodiment of the present invention.
Fig. 2 is a schematic view of a second sealing member according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a sealing member of a piston accumulator according to an embodiment of the present invention.
The reference numerals in the figures are respectively:
1. a first seal member; 2. a second seal member; 3. a first seal ring; 4. a first "O" ring; 5. a first star ring; 6. a second seal ring; 7. a second "O" ring; 8. a piston; 9. and (5) hydraulic oil.
Detailed Description
The following description is given of a specific embodiment of a seal of a piston accumulator according to the present invention with reference to the accompanying drawings, but it should be noted that: the described embodiments are not intended to limit the practice of the invention. All adopt the utility model discloses a similar structure and similar change all should go into the utility model discloses a protection scope. The following description of the embodiments refers to the accompanying drawings for illustrating the specific embodiments in which the invention may be practiced. In the embodiments, directional terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", etc. refer to directions of the attached drawings only. Accordingly, the directional terms used are used for describing and understanding the present invention, and are not used for limiting the present invention.
See fig. 1, 2 and 3. A seal for a piston accumulator comprises a first seal 1 and a second seal 2; the first sealing element 1 comprises a first sealing ring 3, a first O-shaped ring 4 and a first star-shaped ring 5, the first sealing ring 3 is of a concave structure, the first sealing ring 3 is connected with the first star-shaped ring 5, and the first O-shaped ring 4 is arranged close to the first sealing ring 3; the second sealing element 2 comprises a second sealing ring 6 and a second O-shaped ring 7, the second sealing ring 6 is of a convex structure, and the second O-shaped ring 7 is arranged close to the second sealing ring 6. The sealing element of the piston accumulator is arranged on a piston 8 of the piston accumulator, and hydraulic oil 9 is arranged in the piston accumulator. The second seal 2 is arranged close to the hydraulic oil 9. The first seal 1 is arranged remote from the hydraulic oil 9. The first star ring 5 is made of elastomer materials, and the first star ring 5 is arranged in the concave structure of the first sealing ring 3.
The first sealing element 1 comprises two first "O" rings 4, the first "O" rings 4 being arranged close to the piston 8, and the first sealing ring 3 being arranged remote from the piston 8. The second seal 2 comprises one of the second "O" rings 7, the second "O" ring 7 being arranged close to the piston 8 and the second sealing ring 6 being arranged remote from the piston 8. The convex structure of the second sealing ring 6 is asymmetrical, and the convex structure is far away from the second O-shaped ring 7. The utility model has the advantages that the leakage risk is greatly reduced, and the irrecoverable economic loss caused by leakage is avoided; meanwhile, an asymmetric convex structure is adopted, the requirement on the machining precision of the piston type energy accumulator matched with the asymmetric convex structure is not required to be too high, and the production cost can be reduced. First sealing ring 3 adopts the polytetrafluoroethylene spare, first "O" type circle 4 adopts the rubber spare, second sealing ring 6 adopts the polytetrafluoroethylene spare, second "O" type circle 7 adopts the rubber spare.
The first sealing element 1 and the second sealing element 2 are arranged on a piston 8 of the piston type energy accumulator in the same axial direction, the first sealing element 1 is far away from hydraulic oil 9, the second sealing element 2 is close to the hydraulic oil 9, the section of the convex structure of the second sealing ring 6 is asymmetrical, and the notch needs to be arranged towards liquid; hydraulic oil 9 is filled in the piston type energy accumulator, the piston 8 is stressed to move upwards, main pressure in the double sealing process comes from one side of the liquid, the second sealing element 2 plays a role in pressure reduction and sealing, and the first sealing element 1 cannot be subjected to excessive pressure to cause oil leakage due to the second sealing element 2; piston accumulator release, piston 8 atress downstream, owing to increased second sealing member 2 this moment, the sharp corner of its excircle is better scrapes hydraulic oil 9 on the inner wall for first sealing member 1 contacts cleaner inner wall (has small impurity in the hydraulic oil 9), is unlikely to wear and tear first star type circle 5, increases life.
Claims (10)
1. A seal for a piston accumulator comprising a first seal and a second seal; the first sealing element comprises a first sealing ring, a first O-shaped ring and a first star-shaped ring, the first sealing ring is of a concave structure, the first sealing ring is connected with the first star-shaped ring, and the first O-shaped ring is arranged close to the first sealing ring; the second sealing element comprises a second sealing ring and a second O-shaped ring, the second sealing ring is of a convex structure, and the second O-shaped ring is close to the second sealing ring.
2. The piston accumulator seal according to claim 1, characterized in that the piston accumulator seal is arranged on a piston of a piston accumulator, in which hydraulic oil is arranged.
3. The piston accumulator seal of claim 2, wherein the second seal is disposed proximate the hydraulic oil.
4. The piston accumulator seal of claim 2, wherein the first seal is disposed remotely from the hydraulic oil.
5. The piston accumulator seal of claim 2, wherein said first seal comprises two of said first "O" rings, said first "O" rings being disposed proximate to said piston, said first seal ring being disposed distal to said piston.
6. The piston accumulator seal of claim 2, wherein said second seal comprises one said second "O" ring, said second "O" ring being disposed proximate said piston, said second seal ring being disposed distal said piston.
7. The piston accumulator seal of claim 1, wherein the male formation of the second seal ring is asymmetric, the male formation being disposed away from the second "O" ring.
8. The piston accumulator seal of claim 1, wherein said first seal ring is a polytetrafluoroethylene member.
9. The piston accumulator seal according to claim 1, wherein said first "O" ring is rubber.
10. The piston accumulator seal of claim 1, wherein said second seal ring is a polytetrafluoroethylene member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121399725.4U CN214888853U (en) | 2021-06-23 | 2021-06-23 | Sealing element of piston type energy accumulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121399725.4U CN214888853U (en) | 2021-06-23 | 2021-06-23 | Sealing element of piston type energy accumulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214888853U true CN214888853U (en) | 2021-11-26 |
Family
ID=78930040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121399725.4U Active CN214888853U (en) | 2021-06-23 | 2021-06-23 | Sealing element of piston type energy accumulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214888853U (en) |
-
2021
- 2021-06-23 CN CN202121399725.4U patent/CN214888853U/en active Active
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