Damper quick in response

Abstract

The utility model discloses a damper quick in response. The damper rapid in response comprises a piston assembly, a working cavity, a compensation cavity, a working cavity end cover and a compensation valve, the working cavity end cover and the compensation valve are arranged at the two ends of the working cavity respectively, the working cavity and the compensation cavity are separated by the working cavity end cover and the compensation valve, the piston assembly is arranged in the working cavity, and the compensation cavity is arranged in the working cavity. Damping oil is arranged in the working cavity and the compensation cavity, an exhaust groove is formed in the working cavity end cover, the working cavity and the compensation cavity are communicated through the exhaust groove so that gas in the working cavity can be discharged to the compensation cavity, the compensation valve is controllably communicated with the working cavity and the compensation cavity, and the damping oil is arranged in the compensation cavity. And the damping oil in the compensation cavity is supplemented into the working cavity. The damper provided by the utility model can quickly and effectively respond to external vibration.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dampers, in particular to a rapid-response damper. BACKGROUND

[0002] With the increasing demand for renewable energy worldwide, photovoltaic power generation technology has been rapidly developed and widely applied. Photovoltaic systems convert solar energy into electricity to provide clean power for various applications. However, during the operation of the photovoltaic system, the photovoltaic panels are often affected by natural and external environmental factors, such as wind, surrounding construction work, traffic work, etc., which can cause vibration. This vibration can cause the photovoltaic panels to shift and become unstable, thereby affecting their power generation efficiency and service life. At present, an effective solution to the problem of photovoltaic system vibration is to install a damper. The dampers currently used mainly include viscous dampers and passive dampers. Viscous dampers are usually composed of springs and viscous fluids, which have the disadvantages of slow response speed, difficulty in responding to instantaneous vibration changes, high maintenance cost, and easy reduction of damping effect with increasing use time. Passive dampers mainly rely on fixed damping materials such as rubber or foam to absorb vibration, and their damping effect cannot be adjusted according to real-time changes in vibration, resulting in poor damping effect when the frequency or amplitude changes significantly. In the field of dampers, although there are other types of high-performance dampers with better performance, the cost of high-performance dampers is usually high, which is not suitable for large-scale deployment and is not suitable for application in large-area photovoltaic systems.

[0003] Therefore, it is necessary to provide a technical solution to overcome the shortcomings of the prior art. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a rapid-response damper, which is an improved and innovative hydraulic damper that can quickly and effectively respond to external vibrations.

[0005] The present application is implemented by the following technical solution: a rapid-response damper, comprising a piston assembly, a working chamber, a compensation chamber, a working chamber end cover, and a compensation valve, the working chamber end cover and the compensation valve are arranged at both ends of the working chamber, the working chamber end cover and the compensation valve separate the working chamber and the compensation chamber, the piston assembly is arranged in the working chamber, and damping oil is arranged in the working chamber and the compensation chamber, wherein the working chamber end cover is provided with an exhaust groove, the exhaust groove communicates the working chamber and the compensation chamber to facilitate the discharge of gas in the working chamber to the compensation chamber, and the compensation valve controllably communicates the working chamber and the compensation chamber to supplement the damping oil in the compensation chamber to the working chamber.

[0006] As a further improved technical solution, the damper comprises an inner cylinder and an outer cylinder arranged outside the periphery of the inner cylinder, the inner cylinder forms the working chamber, and the compensation chamber is formed between the inner cylinder and the outer cylinder.

[0007] As a further improved technical solution, the working chamber end cover comprises a protruding ring portion inserted into the inner cylinder and a flange portion located outside the end face of the inner cylinder, and the exhaust groove is in L shape and is formed on the peripheral wall surface of the protruding ring portion and the lower surface of the flange portion.

[0008] As a further improved technical solution, the piston assembly comprises a piston rod and a piston, the piston separates the working chamber into a first working chamber between the piston and the working chamber end cover and a second working chamber between the piston and the compensation chamber, and when the piston assembly moves so that the first working chamber is compressed and exhausted, the compensation valve opens to introduce the damping oil in the compensation chamber into the second working chamber.

[0009] As a further improved technical solution, the piston is provided with an overflow passage communicating the first working chamber and the second working chamber.

[0010] As a further improved technical solution, the compensation valve comprises a valve body and a valve core inserted into the valve body, a compensation passage is arranged between the valve core and the valve body, the valve body is provided with a plurality of protruding portions limiting the valve core from shaking in the valve body, and the compensation passage is formed between adjacent protruding portions.

[0011] As a further improved technical solution, the valve core comprises a core column, a sealing plate fixed on the core column, and a spring arranged between the core column and the valve body, the spring exerts a force on the core column in a first direction so that the sealing plate tightly abuts against the valve body to block the compensation passage.

[0012] As a further improved technical solution, the valve body is sealingly connected to the end of the working chamber, the core column has a core column cap protruding into the compensation chamber, and the spring is compressed and arranged between the valve body and the core column cap.

[0013] As a further improved technical solution, the valve core further comprises an elastic sheet arranged against the sealing plate, the sealing plate is provided with a through hole, the elastic sheet blocks the through hole, and the elastic sheet is arranged to be elastically deformed in the first direction to open the through hole.

[0014] As a further improved technical solution, the flow area of the through hole is smaller than the flow area of the compensation passage.

[0015] The application provides a quick-response damper, which has a working cavity and a compensation cavity, a working cavity end cover and a compensation valve are arranged at two ends of the working cavity to separate the working cavity and the compensation cavity, an exhaust groove is arranged on the working cavity end cover and communicates the working cavity and the compensation cavity, so that the gas in the working cavity is discharged to the compensation cavity, and the compensation valve controllably communicates the working cavity and the compensation cavity, so that the damping oil in the compensation cavity is supplemented into the working cavity. When the damper works, the air in the working cavity can be quickly discharged through the exhaust groove, and at the same time of discharging the air, the damping oil in the compensation cavity can enter the working cavity for compensation, so that the phenomenon of "empty stroke" that the damper cannot effectively generate damping force in a certain working period due to the difficulty in discharging the air in the working cavity is avoided, the damping quick response is realized through the cooperation of the air exhaust and the damping oil compensation structure, and the overall performance of the damper is optimized. In addition, since the compensation cavity is designed in the application, the damping oil can be effectively supplemented in a long-term use process, the fatigue characteristics of the product are effectively improved, and the performance attenuation is not more than 20% after a million tests. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of a combined state of an embodiment of the quick-response damper of the application.

[0017] Figure 2 is a perspective view of a working cavity end cover in an embodiment of the quick-response damper of the application.

[0018] Figure 3 is a perspective exploded view of a compensation valve in an embodiment of the quick-response damper of the application.

[0019] Figure 4 is a sectional view of the compensation valve in an embodiment of the quick-response damper of the application when the compensation valve is in a closed state.

[0020] Figure 5 is a sectional view of the compensation valve in an embodiment of the quick-response damper of the application when the compensation valve is in an open state.

[0021] The reference signs are as follows: 1, piston assembly; 11, piston; 12, piston rod; 2, outer cylinder barrel; 20, compensation cavity; 21, first outer end cover; 22, second outer end cover; 3, inner cylinder barrel; 30, working cavity; 31, first working cavity; 32, second working cavity; 4, working cavity end cover; 41, convex ring part; 42, flange part; 43, exhaust groove; 5, compensation valve; 51, valve body; 510, compensation channel; 511, convex part; 52, core column; 53, sealing plate; 530, through hole; 54, elastic sheet; 55, gasket; 56, spring; 57, nut; 58, partition ring. DETAILED DESCRIPTION

[0022] In order to make the technical features, objectives and effects of the present application more clearly understood, the specific embodiments of the present application will now be described in detail with reference to the accompanying drawings.

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0024] Please refer to Figures 1 to 5 As shown in the figure, the present application provides a quick-response damper. The quick-response damper comprises a piston assembly 1, a working cavity 30, a compensation cavity 20, a working cavity end cover 4 and a compensation valve 5. The working cavity end cover 4 and the compensation valve 5 are arranged at two ends of the working cavity 30. The working cavity end cover 4 and the compensation valve 5 separate the working cavity 30 and the compensation cavity 20, and the piston assembly 1 is arranged in the working cavity 30. The working cavity 30 and the compensation cavity 20 are provided with damping oil. The working cavity end cover 4 is provided with an exhaust groove 43, which communicates the working cavity 30 and the compensation cavity 20, so as to facilitate the discharge of the gas in the working cavity 30 to the compensation cavity 20. The compensation valve 5 controllably communicates the working cavity 30 and the compensation cavity 20, so as to supplement the damping oil in the compensation cavity 20 to the working cavity 30.

[0025] The damper provided by the present application can quickly discharge the air in the working cavity 30 through the exhaust groove 43 when the damper works, and at the same time, the damping oil in the compensation cavity 20 can enter the working cavity 30 for compensation, thereby avoiding the "idle stroke" phenomenon that the damper cannot effectively generate damping force in a certain working period due to the difficulty in timely discharging the air in the working cavity 30. The damper quickly responds through the coordinated cooperation of the air exhaust and damping oil compensation structure, and the overall performance of the damper is optimized. In addition, since the compensation cavity 20 is designed in the present application, the damping oil can be effectively supplemented in the long-term use process, and the fatigue characteristics of the product are effectively improved. After a million tests, the performance attenuation is not more than 20%.

[0026] The damper is arranged with the piston rod 12 of the piston assembly 1 extending upward in use. In the working process of the damper, the working chamber 30 is filled with damping oil, and the compensation chamber 20 has damping oil but is not filled with damping oil. That is, the lower half of the compensation chamber 20 is filled with damping oil, and the upper half is a cavity. In the embodiment, the damper comprises an inner cylinder 3 and an outer cylinder 2 arranged on the outer periphery of the inner cylinder 3. The inner cylinder 3 forms the working chamber 30, and the compensation chamber 20 is formed between the inner cylinder 3 and the outer cylinder 2. In other embodiments, the working chamber 30 and the compensation chamber 20 can also be formed by a cylinder arranged in sections.

[0027] In the embodiment, the working chamber end cover 4 is arranged at the upper side port of the inner cylinder 3, and the compensation valve 5 is arranged at the lower side port of the inner cylinder 3. The upper side port of the outer cylinder 2 is sealed by a first outer end cover 21, and the lower side port of the outer cylinder 2 is sealed by a second outer end cover 22. The piston assembly 1 comprises a piston rod 12 and a piston 11. The piston 11 is located in the inner cylinder 3, and the piston rod 12 passes through and is sealingly connected to the working chamber end cover 4 and the first outer end cover 21, and extends out of the inner and outer cylinders to be connected to an external component that needs to be damped.

[0028] The piston 11 divides the working chamber 30 into a first working chamber 31 between the piston 11 and the working chamber end cover 4, and a second working chamber 32 between the piston 11 and the compensation chamber 20. When the first working chamber 31 is compressed and exhausted due to the movement of the piston assembly 1, that is, when the piston assembly 1 is pulled upward, the compensation valve 5 opens to introduce the damping oil in the compensation chamber 20 into the second working chamber 32. The piston 11 is provided with a flow passage that communicates the first working chamber 31 and the second working chamber 32. During the stretching or compression movement of the piston assembly 1, damping oil can flow between the first working chamber 31 and the second working chamber 32 through the flow passage. The damping effect is generated due to the throttling effect of the flow passage. In the embodiment, the diameter of the piston 11 is smaller than the inner diameter of the inner cylinder 3, so that there is a gap between the piston 11 and the inner wall of the inner cylinder 3, which forms the flow passage; in other embodiments, a through hole can also be formed on the piston 11 to form the flow passage.

[0029] Please refer to Figure 2As shown, the working chamber end cover 4 is connected to one end of the inner cylinder 3, and the working chamber end cover 4 is in sealing connection with the inner cylinder 3 except for the exhaust groove 43. In this embodiment, the working chamber end cover 4 includes a convex ring portion 41 inserted into the inner cylinder 3 and a flange portion 42 located outside the end face of the inner cylinder 3. The convex ring portion 41 can play a positioning role during assembly and enhance the sealing effect. The exhaust groove 43 is L-shaped and is formed on the peripheral wall surface of the convex ring portion 41 and the lower surface of the flange portion 42. When the damper is working and there is air in the working chamber 30, the air in the working chamber 30 can quickly enter the compensation chamber 20 through the exhaust groove 43 by pulling the piston assembly 1 upward, so that there is no air in the working chamber 30 in the subsequent cycle, and a stable damping effect can be achieved at this time. Because if there is air in the working chamber 30, the damping force cannot be effectively generated, and a phenomenon similar to idle stroke will occur, which will affect the damping effect. The present application can achieve fast response and optimize the overall performance of the damper through the structural design of the exhaust groove 43.

[0030] It should be noted that due to the presence of the exhaust groove 43, most of the damping oil flows between the first working chamber 31 and the second working chamber 32 through the flow channel during the subsequent working process of the damper, but a small amount of damping oil still enters the compensation chamber 20 through the exhaust groove 43, that is, the setting of the exhaust groove 43 will have a certain influence on the damping performance of the damper. Therefore, the depth of the exhaust groove 43 needs to be reasonably designed in actual product design, and this design allows the damper to achieve different damping performance, so as to better adapt to the damping needs of various photovoltaic panels and other different scenes.

[0031] Please refer to Figures 3 to 5As shown, in the present embodiment, the compensation valve 5 comprises a valve body 51 and a valve core inserted in the valve body 51, a compensation passage 510 is arranged between the valve core and the valve body 51, the valve body 51 is provided with a plurality of protrusions 511 limiting the valve core from shaking in the valve body 51, and the compensation passage 510 is formed between adjacent protrusions 511. When the piston assembly 1 of the damper is subjected to a pulling-out movement, the compensation valve 5 is forced to open, and the damping oil enters the working chamber 30 from the compensation chamber 20 through the compensation passage 510. The flow area of the compensation passage 510 should not be set too small, that is, the compensation passage 510 should not be set too narrow. If the compensation passage 510 is too narrow, the damping oil in the compensation chamber 20 cannot be compensated to the working chamber 30 in time, which may result in the phenomenon of idle stroke. In the present embodiment, the valve body 51 is provided with a concave-convex alternating annular groove structure, the convex part constitutes the protrusion 511 cooperating with the valve core to prevent the valve core from shaking, and the concave part constitutes the compensation passage 510, which not only ensures that the compensation passage 510 has a suitable flow area, but also ensures reliable assembly between the valve core and the valve body 51, and has better sealing performance.

[0032] Please refer to Figure 4 and Figure 5 As shown, in the present embodiment, the valve core comprises a core column 52, a sealing plate 53 fixed on the core column 52, and a spring 56 arranged between the core column 52 and the valve body 51, the spring 56 exerts a force on the core column 52 in a first direction so that the sealing plate 53 tightly abuts against the valve body 51 to block the compensation passage 510. The valve body 51 is sealingly connected to the end of the working chamber 30, the core column 52 has a core column cap protruding into the compensation chamber 20, and the spring 56 is compressed and arranged between the valve body 51 and the core column cap. The valve core further comprises an elastic sheet 54 arranged against the sealing plate 53, the sealing plate 53 is provided with a through hole 530, the elastic sheet 54 blocks the through hole 530, and the elastic sheet 54 is arranged to be elastically deformed in the first direction to open the through hole 530. The flow area of the through hole 530 is smaller than the flow area of the compensation passage 510.

[0033] Specifically, the assembly relationship of the compensation valve 5 is as follows: the spring 56 is sleeved on the column of the stem 52, and the diameter of the spring 56 is smaller than the diameter of the stem cap of the stem 52 and abuts against the stem cap. The column of the stem 52 passes through the through hole on the valve body 51, and the spring 56 is compressed between the valve body 51 and the stem cap; the gasket 55, elastic sheet 54, sealing plate 53, and spacer ring 58 are sleeved on the column of the stem 52 in sequence, and locked by a nut 57 at the end of the column; the spacer ring 58 creates a gap between the nut 57 and the through hole 530 on the sealing plate 53 to prevent the through hole 530 from being blocked by the nut 57. Figure 4 As shown, when the compensation valve 5 is not under force, it is acted upon by the elastic force of the spring 56, and the valve body 51 is in sealed contact with the sealing plate 53. At this time, although the damping oil can enter the compensation channel 510, it is blocked by the sealing plate 53 and cannot pass through the sealing plate 53 and enter the working chamber 30. Figure 5 As shown, when the leftward force on the core column 52 is greater than the elastic force of the spring 56, the core column 52 moves to the left, further compressing the spring 56 and deforming it. At this time, the sealing plate 53 moves to the left and breaks away from the contact with the valve body 51. At this time, the compensation valve 5 is in the open state, and the compensation channel 510 is connected to the working chamber 30 on the left side of the sealing plate 53. The damping oil flows along Figure 5 When the damping oil is compressed from the working chamber 30 toward the compensation valve 5 and the pressure exceeds a preset value, the damping oil in the working chamber 30 can drive the elastic sheet 54 to deform through the through hole 530 and flow into the compensation chamber 20 to adapt to high-frequency and rapid vibration conditions.

[0034] In some embodiments, the damper provided herein is applied to photovoltaic panels. During use, the piston rod 12 is arranged vertically upward, and the piston assembly 1 moves within the working chamber 30, generating a damping force to offset the vibration of the photovoltaic panel. When the piston assembly 1 is in the extension phase, the damping oil is retained in the working chamber 30 by the piston 11 of the piston assembly 1. At the same time, the compensating valve 5 is opened, allowing the damping oil in the compensating chamber 20 to flow back into the working chamber 30. When the piston assembly 1 is in the compression phase, some of the damping oil is retained in the working chamber 30 by the piston 11 of the piston assembly 1, while the remaining portion can enter the compensating chamber 20 through the compensating valve 5, thus forming an effective circulation system.

[0035] Through the above description of the specific embodiments, it can be known that the damper with rapid response provided by the application has a working cavity 30 and a compensation cavity 20, a working cavity end cover 4 and a compensation valve 5 are arranged at two ends of the working cavity 30 to separate the working cavity 30 and the compensation cavity 20, the working cavity end cover 4 is provided with an exhaust groove 43, the exhaust groove 43 is communicated with the working cavity 30 and the compensation cavity 20, so as to facilitate the air in the working cavity 30 to be discharged to the compensation cavity 20, and the compensation valve 5 is controllably communicated with the working cavity 30 and the compensation cavity 20, so as to supplement the damping oil in the compensation cavity 20 to the working cavity 30. When the damper works, the air in the working cavity 30 can be rapidly discharged through the exhaust groove 43, at the same time of discharging the air, the damping oil in the compensation cavity 20 can enter the working cavity 30 to compensate, so as to avoid the "empty stroke" phenomenon that the damper cannot effectively generate damping force in a certain working period due to the difficulty of discharging the air in the working cavity 30 in time, the damper rapid response is realized through the cooperation of the air exhaust and the damping oil compensation structure, and the overall performance of the damper is optimized. In addition, since the compensation cavity 20 is designed in the application, the damping oil can be effectively supplemented in the long-term use process, the fatigue characteristics of the product are effectively improved, and the performance attenuation is not more than 20% after a million times of test.

[0036] The application is described through several specific embodiments, and those skilled in the art should understand that various modifications and equivalent replacements can be made to the application without departing from the scope of the application. In addition, various modifications can be made to the application for specific situations or specific conditions without departing from the scope of the application. Therefore, the application is not limited to the disclosed specific embodiments, but should include all the embodiments falling within the scope of the claims of the application.

Claims

1. A fast-responding damper characterized by, The damper comprises a piston assembly, a working chamber, a compensation chamber, a working chamber end cover and a compensation valve, the working chamber end cover and the compensation valve are arranged at two ends of the working chamber, the working chamber end cover and the compensation valve separate the working chamber and the compensation chamber, the piston assembly is arranged in the working chamber, and damping oil is arranged in the working chamber and the compensation chamber.

2. The fast-responding damper of claim 1, wherein The damper comprises an inner cylinder and an outer cylinder arranged outside the inner cylinder, the inner cylinder forms the working chamber, and the compensation chamber is formed between the inner cylinder and the outer cylinder.

3. The fast-responding damper of claim 2, wherein, The working chamber end cover comprises a convex ring part inserted into the inner cylinder and a flange part located outside an end face of the inner cylinder, and the exhaust groove is L-shaped and is arranged on a peripheral wall surface of the convex ring part and a lower surface of the flange part.

4. The fast-responding damper of claim 1, wherein The piston assembly comprises a piston rod and a piston, the piston separates the working chamber into a first working chamber between the piston and the working chamber end cover and a second working chamber between the piston and the compensation chamber, and when the piston assembly moves to compress the first working chamber to exhaust, the compensation valve is opened to introduce the damping oil in the compensation chamber into the second working chamber.

5. The fast-responding damper of claim 4, wherein, The piston is provided with an overflow channel communicating the first working chamber and the second working chamber.

6. The fast-responding damper of claim 1 or 4, wherein, The compensation valve comprises a valve body and a valve core inserted into the valve body, a compensation channel is arranged between the valve core and the valve body, the valve body is provided with a plurality of protrusions limiting the valve core from shaking in the valve body, and the compensation channel is formed between adjacent protrusions.

7. The fast-responding damper of claim 6, wherein, The valve core comprises a core column, a sealing plate fixed on the core column, and a spring arranged between the core column and the valve body, the spring exerts a force on the core column in a first direction to make the sealing plate tightly contact the valve body to block the compensation channel.

8. The fast-responding damper of claim 7, wherein, The valve body is sealingly connected to an end of the working chamber, the core column has a core column cap protruding into the compensation chamber, and the spring is compressed and arranged between the valve body and the core column cap.

9. The fast-responding damper of claim 7, wherein, The valve core further comprises an elastic sheet arranged against the sealing plate, the sealing plate is provided with a through hole, the elastic sheet blocks the through hole, and the elastic sheet is arranged to be elastically deformed in the first direction to open the through hole.

10. The fast-responding damper of claim 9, wherein, The flow area of the through hole is smaller than the flow area of the compensation channel.

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