Photovoltaic damper with sealing structure

Abstract

The utility model discloses a photovoltaic damper with a sealing structure in the field of photovoltaic dampers, which comprises an oil storage cylinder pipe, a working cylinder, a piston rod, a guide sleeve and a top valve, at least one outer oil seal ring is assembled outside the guide sleeve, a piston rod oil seal ring and a first Y-shaped oil seal ring are assembled inside the guide sleeve, an inner oil seal ring is assembled outside the top valve, and a second Y-shaped oil seal ring is assembled inside the inner oil seal ring. A step seal sealing ring and a second Y-shaped oil seal ring are assembled in the overhead valve, a traditional rotary oil seal is replaced with the combination of the step seal sealing ring and the second Y-shaped oil seal ring, the photovoltaic damper can bear the working pressure of 40 Mpa or above, the overhead valve adopts an aluminum part and is additionally provided with an oil drainage groove, leaked oil liquid is discharged to an outer cavity through the oil drainage groove, and therefore the photovoltaic damper can bear the working pressure of 40 Mpa or above. And the damping oil in the inner cavity is discharged to the outer cavity through the damping hole, and the flow velocity of the oil is limited to generate damping force, so that the problem of oil leakage of a traditional photovoltaic damper is solved, and the service life of the photovoltaic damper is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic damper technology, specifically a photovoltaic damper with a sealed structure. Background Technology

[0002] A damper is a device that provides resistance to motion and reduces the energy of motion. Dampers are used in various industries to reduce vibration and dissipate energy. For example, in a photovoltaic power generation system, photovoltaic equipment converts solar energy into electrical energy for storage. Therefore, it needs to be installed outdoors to absorb sunlight. Affected by wind, rain, etc., the photovoltaic panels will inevitably vibrate, affecting the service life of the equipment. Under such circumstances, installing dampers in the photovoltaic power generation system for vibration reduction and energy dissipation becomes the best choice.

[0003] Currently, the top valve in photovoltaic dampers uses an O-ring and a rotary oil seal for sealing. This design is simple and efficient to install. However, the rotary oil seal is not suitable for products with reciprocating motion. Under a working pressure of 40 MPa, there is a risk of oil leakage after long-term use. In addition, traditional photovoltaic dampers use a sealing structure that combines a guide sleeve and a top valve. However, this structure is completely sealed and cannot be discharged under long-term high pressure. The damping oil will leak from the piston rod. Over time, this will also shorten the service life of the oil seal and cause a lot of oil leakage, resulting in poor performance. Utility Model Content

[0004] In order to overcome the shortcomings of existing technical solutions, this utility model provides a photovoltaic damper with a sealed structure, which can effectively solve the technical problems mentioned in the background art.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a photovoltaic damper with a sealing structure, including an oil storage cylinder tube, a working cylinder and a piston rod, a piston is fitted at the tail end of the piston rod, and a guide sleeve fitted on the oil storage cylinder tube and a top valve fitted on the working cylinder. The guide sleeve and the top valve are fitted with sealing components for sealing, and the top valve is provided with a channel structure for reducing the sealing pressure of the guide sleeve.

[0006] Furthermore, the sealing assembly includes a piston rod oil seal ring, a first Y-type oil seal ring, a second Y-type oil seal ring, an inner oil seal ring, a step seal ring, and at least one outer oil seal ring. The outer oil seal ring is fitted outside the guide sleeve, the piston rod oil seal ring and the first Y-type oil seal ring are fitted inside the guide sleeve, the inner oil seal ring is fitted outside the top valve, and the step seal ring and the second Y-type oil seal ring are fitted inside the top valve.

[0007] Furthermore, the guide sleeve is provided with a first annular groove corresponding to the number of outer oil seal rings, and the outer oil seal rings are installed in the first annular groove.

[0008] Furthermore, the guide sleeve is provided with a first mounting groove and a second mounting groove distributed vertically inside, the piston rod oil seal ring is fitted in the first mounting groove, and the first Y-shaped oil seal ring is fitted in the second mounting groove.

[0009] Furthermore, the top valve is provided with a second annular groove on its exterior, and the inner oil seal ring is installed in the second annular groove.

[0010] Furthermore, the top valve is provided with a third mounting groove and a fourth mounting groove arranged vertically inside, the second Y-type oil seal ring is fitted in the third mounting groove, and the step seal ring is fitted in the fourth mounting groove.

[0011] Furthermore, the working cylinder is located inside the oil reservoir tube, and an outer cavity space is formed between the working cylinder and the oil reservoir tube. The piston rod is located inside the working cylinder, and an inner cavity space is formed between the piston rod and the working cylinder. The piston is slidably disposed inside the working cylinder. One end of the piston rod passes through the guide sleeve and the top valve in sequence, and extends into the working cylinder and is fixedly connected to the piston.

[0012] Furthermore, the channel structure includes an oil drain groove disposed on the top valve, the oil drain groove connecting the inner cavity and the outer cavity, so that the seeping oil is discharged to the outer cavity through the oil drain groove, thereby reducing the pressure of the guide sleeve seal.

[0013] Furthermore, the channel structure also includes a damping orifice disposed on the top valve. The damping orifice is interconnected with the inner cavity and the outer cavity, so that the damping oil in the inner cavity is discharged to the outer cavity through the damping orifice, and the flow rate of the oil is limited to generate damping force.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The traditional rotary oil seal was replaced by a combination of Step seal ring and second Y-type oil seal ring, enabling the photovoltaic damper to withstand working pressures of over 40 MPa.

[0016] In addition, the top valve uses aluminum parts and is equipped with an oil drain groove, which allows the leaked oil to be discharged to the outer cavity through the oil drain groove, thereby reducing the pressure of the guide sleeve seal. The damping oil in the inner cavity is discharged to the outer cavity through the damping hole, and the flow rate of the oil is limited to generate damping force. This solves the problem of oil leakage in traditional photovoltaic dampers and improves the service life of photovoltaic dampers. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the present invention;

[0018] Figure 2 for Figure 1 Enlarged view of the structure of section A;

[0019] Figure 3This is an exploded view of the guide sleeve and top valve in this utility model from a top view angle;

[0020] Figure 4 This is an exploded view of the guide sleeve and top valve in this utility model from a bottom view angle;

[0021] Figure 5 This is a cross-sectional view of the guide sleeve and top valve in this utility model.

[0022] Numbering on the map:

[0023] 1. Oil reservoir pipe; 2. Working cylinder; 3. Piston rod; 4. Piston; 5. Guide sleeve; 6. Top valve; 7. Outer oil seal ring; 8. First annular groove; 9. Piston rod oil seal ring; 10. First Y-type oil seal ring; 11. Oil drain groove; 12. Damping hole; 13. Inner oil seal ring; 14. Second Y-type oil seal ring; 15. First mounting groove; 16. Second mounting groove; 17. Third mounting groove; 18. Step seal ring; 19. Fourth mounting groove; 20. Second annular groove; 21. Inner cavity; 22. Outer cavity. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model, a photovoltaic damper with a sealed structure, is a further improvement and optimization of another patent by the same applicant (publication number CN 221257503 U, patent name: A novel photovoltaic damper). Compared with the original patent, this utility model improves the top valve and guide sleeve while keeping the rest of the structure unchanged.

[0026] like Figure 1-5 As shown, a photovoltaic damper with a sealed structure includes an oil reservoir tube 1, a working cylinder 2, and a piston rod 3. A piston 4 is mounted on the tail end of the piston rod 3. The device also includes a guide sleeve 5 mounted on the oil reservoir tube 1 and a top valve 6 mounted on the working cylinder 2. The guide sleeve 5 and the top valve 6 are equipped with sealing components for sealing. The top valve 6 has a channel structure for reducing the sealing pressure of the guide sleeve 5. The sealing components include a piston rod oil seal ring 9, a first Y-type oil seal ring 10, a second Y-type oil seal ring 14, an inner oil seal ring 13, a step seal ring 18, and at least one outer oil seal ring 7. Figure 1The middle arrow B indicates the flow direction of the damping oil. The internal pressure is 40 MPa. The working cylinder 2 is located inside the oil storage cylinder tube 1. An outer cavity 22 space is formed between the working cylinder 2 and the oil storage cylinder tube 1. The piston rod 3 is located inside the working cylinder 2. An inner cavity 21 space is formed between the piston rod 3 and the working cylinder 2. The piston 4 is slidably disposed inside the working cylinder 2. One end of the piston rod 3 passes through the guide sleeve 5 and the top valve 6 in sequence, and extends into the working cylinder 2 and is fixedly connected to the piston 4.

[0027] The guide sleeve 5 serves as a guide and positioner. The outer oil seal ring 7 is fitted on the outside of the guide sleeve 5. The outside of the guide sleeve 5 is provided with a first annular groove 8 corresponding to the number of outer oil seal rings 7. The outer oil seal rings 7 are installed in the first annular groove 8. In this embodiment, there are two outer oil seal rings 7. The two outer oil seal rings 7 serve to seal the oil storage cylinder pipe 1.

[0028] The piston rod oil seal ring 9 and the first Y-shaped oil seal ring 10 are fitted inside the guide sleeve 5. The guide sleeve 5 has a first mounting groove 15 and a second mounting groove 16 distributed vertically inside. The piston rod oil seal ring 9 is fitted in the first mounting groove 15 and the first Y-shaped oil seal ring 10 is fitted in the second mounting groove 16. The piston rod oil seal ring 9 has a dustproof effect, and the first Y-shaped oil seal ring 10 has a sealing and pressure-reducing effect.

[0029] The inner oil seal ring 13 is fitted on the outside of the top valve 6. The top valve 6 has a second annular groove 20 on its outside. The inner oil seal ring 13 is installed in the second annular groove 20. The inner oil seal ring 13 seals the working cylinder 2 and prevents oil leakage.

[0030] The step seal ring 18 and the second Y-type oil seal ring 14 are fitted inside the top valve 6. The top valve 6 has a third mounting groove 17 and a fourth mounting groove 19 arranged vertically inside. The second Y-type oil seal ring 14 is fitted in the third mounting groove 17, and the step seal ring 18 is fitted in the fourth mounting groove 19. Both the step seal ring 18 and the second Y-type oil seal ring 14 have the effect of sealing and reducing pressure.

[0031] The channel structure includes an oil drain groove 11 disposed on the top valve 6. The oil drain groove 11 connects the inner cavity 21 and the outer cavity 22, so that the seeping oil is discharged to the outer cavity 22 through the oil drain groove 11 to reduce the sealing pressure of the guide sleeve 5. The channel structure also includes a damping hole 12 disposed on the top valve 6. The damping hole 12 is interconnected with the inner cavity 21 and the outer cavity 22, so that the damping oil in the inner cavity 21 is discharged to the outer cavity 22 through the damping hole 12, and the flow rate of the oil is limited to generate damping force.

[0032] Assembly steps of guide sleeve 5: Insert the two outer oil seal rings 7 into the first annular groove 8, and then insert the piston rod oil seal ring 9 and the first Y-type oil seal ring 10 into the first mounting groove 15 and the second mounting groove 16 in sequence.

[0033] Assembly steps of top valve 6: Insert the inner oil seal ring 13 into the second annular groove 20, then sequentially insert the step seal ring 18 and the second Y-type oil seal ring 14 into the third mounting groove 17 and the fourth mounting groove 19 respectively. The step seal ring 18 in this structure serves to seal and initially reduce pressure, while the second Y-type oil seal ring 14 further reduces pressure and seals, achieving a complete seal against 40 MPa pressure.

[0034] When assembling piston rod 3, use an oil seal sleeve to protect the oil seal, then install top valve 6 and guide sleeve 5 in sequence, inject oil, press guide sleeve 5, perform a demonstration test, and then seal the flange.

[0035] Compared to traditional technologies:

[0036] The traditional rotary oil seal was replaced by a combination of Step seal ring 18 and second Y-type oil seal ring 14, enabling the photovoltaic damper to withstand working pressures of over 40 MPa.

[0037] In addition, the top valve 6 is made of aluminum and has an oil drain groove 11, which allows the leaked oil to be discharged into the outer cavity 22 through the oil drain groove 11, thereby reducing the sealing pressure of the guide sleeve 5. The damping oil in the inner cavity 21 is discharged into the outer cavity 22 through the damping hole 12, and the flow rate of the oil is limited to generate damping force. This solves the problem of oil leakage in traditional photovoltaic dampers and improves the service life of photovoltaic dampers.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A photovoltaic damper with a sealed structure, comprising an oil reservoir tube, a working cylinder, and a piston rod, wherein a piston is fitted at the tail end of the piston rod, characterized in that, It also includes a guide sleeve mounted on the oil reservoir pipe and a top valve mounted on the working cylinder. The guide sleeve and the top valve are equipped with sealing components for sealing, and the top valve is provided with a channel structure for reducing the sealing pressure of the guide sleeve.

2. A photovoltaic damper with a sealed structure according to claim 1, characterized in that, The sealing assembly includes a piston rod oil seal ring, a first Y-type oil seal ring, a second Y-type oil seal ring, an inner oil seal ring, a step seal ring, and at least one outer oil seal ring. The outer oil seal ring is fitted outside the guide sleeve, the piston rod oil seal ring and the first Y-type oil seal ring are fitted inside the guide sleeve, the inner oil seal ring is fitted outside the top valve, and the step seal ring and the second Y-type oil seal ring are fitted inside the top valve.

3. A photovoltaic damper with a sealed structure according to claim 2, characterized in that, The guide sleeve has a first annular groove on its outside corresponding to the number of outer oil seal rings, and the outer oil seal rings are installed in the first annular groove.

4. A photovoltaic damper with a sealed structure according to claim 3, characterized in that, The guide sleeve has a first mounting groove and a second mounting groove arranged vertically inside. The piston rod oil seal ring is fitted in the first mounting groove, and the first Y-shaped oil seal ring is fitted in the second mounting groove.

5. A photovoltaic damper with a sealed structure according to claim 2, characterized in that, The top valve has a second annular groove on its exterior, and the inner oil seal ring is installed in the second annular groove.

6. A photovoltaic damper with a sealed structure according to claim 5, characterized in that, The top valve has a third mounting groove and a fourth mounting groove arranged vertically inside. The second Y-type oil seal ring is fitted in the third mounting groove, and the step seal ring is fitted in the fourth mounting groove.

7. A photovoltaic damper with a sealed structure according to claim 1, characterized in that, The working cylinder is located inside the oil reservoir tube, and an outer cavity space is formed between the working cylinder and the oil reservoir tube. The piston rod is located inside the working cylinder, and an inner cavity space is formed between the piston rod and the working cylinder. The piston is slidably disposed inside the working cylinder. One end of the piston rod passes through the guide sleeve and the top valve in sequence, and extends into the working cylinder and is fixedly connected to the piston.

8. A photovoltaic damper with a sealed structure according to claim 1, characterized in that, The channel structure includes an oil drain groove disposed on the top valve. The oil drain groove connects the inner cavity and the outer cavity, so that the seeping oil is discharged to the outer cavity through the oil drain groove, thereby reducing the pressure of the guide sleeve seal.

9. A photovoltaic damper with a sealed structure according to claim 8, characterized in that, The channel structure also includes a damping orifice disposed on the top valve. The damping orifice is interconnected with the inner cavity and the outer cavity, so that the damping oil in the inner cavity is discharged to the outer cavity through the damping orifice, and the flow rate of the oil is limited to generate damping force.

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