Novel controllable piston energy accumulator

Abstract

The utility model relates to the field of piston energy accumulators, and discloses a novel controllable piston energy accumulator which comprises an outer shell, the top end of the outer shell is fixedly connected with a shell cover through a bolt, an air inlet pipe penetrates through and is fixedly connected with the inner surface of the shell cover, and an oil inlet pipe penetrates through and is fixedly connected with the inner surface of the outer shell. The lower surface of the oil inlet pipe is fixedly connected with a circulating pipe, a valve is arranged on the middle section of the oil inlet pipe, an adjusting assembly is arranged on the middle section of the oil inlet pipe, and a buffering assembly is arranged in the shell; the adjusting assembly comprises a guide plate, and the guide plate is connected to the outer wall of the oil inlet pipe in a sliding mode. In the utility model, through the matching of the adjusting assembly, the hand wheel is rotated to drive the screw rod to rotate, the guide plate moves and drives the connecting rod to transmit, and the flow guide plate is opened and closed to change the through-flow area of oil, so that the oil inlet speed is controllable, the pressure and flow requirements under different working conditions are met, and the practicability and adaptability of the device are improved.

Description

Technical Field

[0001] This utility model relates to the field of piston accumulators, and in particular to a novel controllable piston accumulator. Background Technology

[0002] Piston accumulators, as important energy storage components in hydraulic systems, are widely used in fields such as engineering machinery, industrial automation, and aerospace. Their core function is to store hydraulic energy through gas compression and release the energy when needed to stabilize system pressure, compensate for leakage, or provide instantaneous high flow support.

[0003] As modern industry continues to demand higher precision, reliability, and energy efficiency from hydraulic systems, the limitations of traditional piston accumulators in terms of flow control, shock buffering, and adaptability to operating conditions are becoming increasingly apparent.

[0004] Traditional piston accumulators typically employ a fixed flow area inlet structure, making it impossible to adjust the inlet speed according to actual operating conditions. This results in the system struggling to match pressure and flow requirements under different loads. Reducing the inlet speed (shrinking the flow area of ​​the inlet pipe) can decrease the rate at which hydraulic oil is injected into the accumulator, making the gas chamber compression process slower and thus improving the stability of the output pressure. Conversely, increasing the inlet speed (expanding the flow area) can quickly build up system pressure, making it suitable for scenarios requiring high flow output for short periods (such as the rapid start-up phase of hydraulic machinery).

[0005] To address this problem, a novel controllable piston accumulator is proposed. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a novel controllable piston accumulator, which aims to improve the problems of the non-adjustable oil inlet speed and difficulty in matching different load pressures and flow requirements in the existing technology of traditional accumulators.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a novel controllable piston accumulator, comprising a housing, a housing cover fixedly connected to the top of the housing by bolts, an air inlet pipe extending through and fixedly connected to the inner surface of the housing cover, an oil inlet pipe extending through and fixedly connected to the inner surface of the housing, a flow pipe fixedly connected to the lower surface of the oil inlet pipe, a valve provided in the middle section of the oil inlet pipe, an adjustment component provided in the middle section of the oil inlet pipe, and a buffer component provided inside the housing;

[0008] The adjustment assembly includes a guide plate, which is slidably connected to the outer wall of the oil inlet pipe. A connecting rod is hinged to the upper surface of the guide plate, and a sliding rod is hinged to the top of the connecting rod. A guide plate is fixedly connected to the left surface of the sliding rod. A screw is threaded through and connected to the inner surface of the guide plate, and a handwheel is fixedly connected to the lower surface of the screw.

[0009] As a further description of the above technical solution:

[0010] The buffer assembly includes a rubber pad, which is piston-connected to the inner surface of the housing. A support plate is fixedly connected to the inner surface of the rubber pad. A movable ring is elastically connected to the inner wall of the bottom end of the support plate via a compression spring. A baffle is fixedly connected to the upper surface of the movable ring.

[0011] As a further description of the above technical solution:

[0012] The upper surface of the guide plate and the lower surface of the slide rod are both equipped with hinge seats, and the upper and lower ends of the connecting rod are respectively connected to the hinge seats on the upper surface of the guide plate and the hinge seats on the lower surface of the slide rod.

[0013] As a further description of the above technical solution:

[0014] The slide bar passes through and is slidably connected to the right surface of the oil inlet pipe, and the guide plate is set in an arc shape.

[0015] As a further description of the above technical solution:

[0016] The screw is rotatably connected to the lower surface of the oil inlet pipe, the middle section of the oil inlet pipe is configured as a raised annular shape, and the guide plate is slidably connected to the inner wall of the oil inlet pipe.

[0017] As a further description of the above technical solution:

[0018] The centers of the rubber pad, support plate, moving ring, and baffle are on the same axis.

[0019] As a further description of the above technical solution:

[0020] The movable ring passes through and is connected to the piston on the upper surface of the support plate. The top of the baffle is set as an arc surface, and the diameter of the baffle is smaller than the diameter of the rubber pad.

[0021] As a further description of the above technical solution:

[0022] The compression spring, the moving ring, and the baffle are provided in two sets, and the two sets of compression spring, moving ring, and baffle are symmetrically distributed vertically about the center line of the support plate.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, by adjusting the components, rotating the handwheel drives the screw to rotate, causing the guide plate to move and drive the connecting rod to drive the transmission, so that the guide plate opens and closes to change the oil flow area, thereby achieving controllable oil inlet speed to match the pressure and flow requirements under different working conditions, and improving the practicality and adaptability of the device.

[0025] 2. In this utility model, with the cooperation of the buffer components, when oil or gas pressure comes, the baffle first bears the impact, which drives the moving ring to move and squeeze the compression spring for buffering. The arc surface design can disperse the pressure, reduce the wear of rubber pads and other components, ensure the service life of the parts, and enhance the stability of the device for long-term use. Attached Figure Description

[0026] Figure 1 This is a front view of the three-dimensional structure of the overall device in this utility model;

[0027] Figure 2 This is a three-dimensional cross-sectional view of the oil inlet pipe in this utility model;

[0028] Figure 3 This is a front view of the three-dimensional structure of the adjustment component in this utility model;

[0029] Figure 4 This is a three-dimensional cross-sectional view of the outer shell in this utility model;

[0030] Figure 5 This is a three-dimensional cross-sectional view of the rubber pad and support plate in this utility model.

[0031] Legend:

[0032] 1. Outer shell; 2. Shell cover; 3. Air inlet pipe; 4. Oil inlet pipe; 5. Valve; 6. Flow pipe; 71. Guide plate; 72. Connecting rod; 73. Slide rod; 74. Flow deflector; 75. Handwheel; 76. Screw; 81. Rubber pad; 82. Support plate; 83. Compression spring; 84. Moving ring; 85. Baffle. Detailed Implementation

[0033] 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.

[0034] Reference Figure 1This utility model provides an embodiment of a novel controllable piston accumulator, comprising a housing 1, which serves as the accumulator housing. A housing cover 2 is bolted to the top of the housing 1; the housing cover 2 is detachable and fixed, and a sealing ring is provided at the connection between the housing cover 2 and the housing 1 to ensure a tight seal. An air inlet pipe 3 is connected through and fixedly connected to the inner surface of the housing cover 2, and the air inlet pipe 3 is connected to an external pipeline, allowing gas to be introduced into the housing 1 from the air inlet pipe 3. A solenoid valve is installed in the middle section of the air inlet pipe 3 to control its opening and closing. An oil inlet pipe 4 is connected through and fixedly connected to the inner surface of the housing 1. The lower surface of the oil inlet pipe 4... A flow pipe 6 is fixedly connected to the surface, and the oil inlet pipe 4 is connected to the flow pipe 6. Both are existing technologies and can be implemented by those skilled in the art. Since they are existing technologies, they will not be described in detail in this case. A valve 5 is set in the middle section of the oil inlet pipe 4. The valve 5 is existing technology and can be implemented by those skilled in the art. The valve 5 is used to control the opening and closing of the oil inlet pipe 4. An adjustment component is set in the middle section of the oil inlet pipe 4. The adjustment component can change the size of the oil flow area. A buffer component is set inside the outer shell 1. The buffer component can enhance the service life of the piston and enhance the stability of the device during long-term use.

[0035] Reference Figures 1-3 The adjustment assembly includes a guide plate 71, which is circular in shape and slidably connected to the outer wall of the oil inlet pipe 4. The guide plate 71 moves longitudinally, and a connecting rod 72 is hinged to the upper surface of the guide plate 71. When the guide plate 71 moves longitudinally, it will squeeze the connecting rod 72 to make it swing. When the guide plate 71 moves downward, the connecting rod 72 will swing forward. Conversely, when the guide plate 71 moves upward, the connecting rod 72 will swing in the opposite direction. A slide rod 73 is hinged to the top of the connecting rod 72. A guide plate 74 is fixedly connected to the left surface of the slide rod 73. The forward swinging connecting rod 72 can drive the slide rod 73 and the guide plate 74 to move towards the center of the oil inlet pipe 4. A screw 76 is threaded through and connected to the inner surface of the guide plate 71. A handwheel 75 is fixedly connected to the lower surface of the screw 76. The surface of the handwheel 75 has a recess that fits the contour of the fingers for easy gripping.

[0036] Reference Figures 1-3The upper surface of the guide plate 71 and the lower surface of the slide rod 73 are both equipped with hinge seats. The upper and lower ends of the connecting rod 72 are respectively connected to the hinge seats on the upper surface of the guide plate 71 and the hinge seats on the lower surface of the slide rod 73. The slide rod 73 passes through and is slidably connected to the right surface of the oil inlet pipe 4. The contact point between the slide rod 73 and the oil inlet pipe 4 is tightly fitted to maintain a seal. The guide plate 74 is set in an arc shape. The screw 76 is rotatably connected to the lower surface of the oil inlet pipe 4. When the screw 76 rotates, it will drive the guide plate 71 to move longitudinally. When the screw 76 is stationary, the position of the guide plate 71 will be fixed. There are four sets of slide rod 73, connecting rod 72 and guide plate 74, arranged in a circular array with the center of the oil inlet pipe 4 as the origin. The middle section of the oil inlet pipe 4 is set as a raised ring. The guide plate 74 is slidably connected to the inner wall of the oil inlet pipe 4.

[0037] Reference Figure 1 , Figure 4 , Figure 5 The buffer assembly includes a rubber pad 81, which is piston-connected to the inner surface of the housing 1. A support plate 82 is fixedly connected to the inner surface of the rubber pad 81. The rubber pad 81 and the support plate 82 together form the piston. The inner wall of the bottom end of the support plate 82 is elastically connected to a moving ring 84 by a compression spring 83. A baffle 85 is fixedly connected to the upper surface of the moving ring 84. When the pressure of oil and air suddenly arrives, the baffle 85 will be the first to contact.

[0038] Reference Figure 1 , Figure 4 , Figure 5 The centers of the rubber pad 81, support plate 82, moving ring 84, and baffle 85 are on the same axis. The moving ring 84 passes through and is connected to the upper surface of the support plate 82. When the moving ring 84 moves toward the center of the support plate 82, it will squeeze the compression spring 83 to generate a reaction force, which can alleviate the impact. The top of the baffle 85 is set as an arc surface, which can increase the force-bearing area and reduce the pressure acting on a single point. The diameter of the baffle 85 is smaller than the diameter of the rubber pad 81. The baffle 85 does not contact the inner wall of the outer shell 1, which can avoid wear. There are two sets of compression springs 83, moving rings 84, and baffles 85. The two sets of compression springs 83, moving rings 84, and baffles 85 are symmetrically distributed vertically about the center line of the support plate 82.

[0039] Working principle: When using this device, first adjust the size of the oil inlet area according to the requirements to change the oil inlet speed. By reducing the oil inlet speed (reducing the flow area of ​​the oil inlet pipe), the rate at which hydraulic oil is injected into the accumulator can be reduced, making the gas chamber compression process slower, thereby improving the stability of the output pressure. Conversely, increasing the oil inlet speed (expanding the flow area) can quickly build up the system pressure, which is suitable for scenarios that require high flow output for a short time.

[0040] When it is necessary to reduce the flow area, turn the handwheel 75 to drive the screw 76 to rotate, which in turn moves the guide plate 71 downward and pulls the connecting rod 72 to swing. The swinging connecting rod 72 will drive multiple sets of sliding rods 73 and guide plates 74 to move closer together. Gradually, the overlap area between the guide plate 74 and the hollow area inside the oil inlet pipe 4 will increase, thus reducing the flow area. Conversely, if it is necessary to increase the flow area, turn the handwheel 75 in the opposite direction to drive the screw 76 to reverse, which moves the guide plate 71 upward and pushes the connecting rod 72 to swing in the opposite direction. This will drive multiple sets of sliding rods 73 and guide plates 74 to open. Gradually, the overlap area between the guide plate 74 and the hollow area inside the oil inlet pipe 4 will decrease, thus increasing the flow area. When the flow area is adjusted, release the handwheel 75, and the screw 76 will keep the device stable.

[0041] Then, opening valve 5 allows oil to flow into housing 1, which in turn pushes the buffer assembly to move. When oil or air impacts, it will first contact baffle 85. Baffle 85 will move and drive moving ring 84 to retract into support plate 82. This process will compress spring 83 to generate a reaction force, and there is a buffer zone, which can reduce the pressure acting on rubber pad 81 and support plate 82, reduce the wear of rubber pad 81 during use, and improve the service life of the device.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A new controllable piston accumulator comprising a housing (1), characterized in that: The top end of the shell (1) is fixedly connected with a shell cover (2) through bolts, the inner surface of the shell cover (2) is penetrated and fixedly connected with an air inlet pipe (3), the inner surface of the shell (1) is penetrated and fixedly connected with an oil inlet pipe (4), the lower surface of the oil inlet pipe (4) is fixedly connected with a flow pipe (6), the middle section of the oil inlet pipe (4) is provided with a valve (5), the middle section of the oil inlet pipe (4) is provided with an adjusting assembly, and the inside of the shell (1) is provided with a buffer assembly. The adjusting assembly comprises a guide plate (71) which is slidingly connected to the outer wall of the oil inlet pipe (4), the upper surface of the guide plate (71) is hingedly connected with a connecting rod (72), the top end of the connecting rod (72) is hingedly connected with a sliding rod (73), the left surface of the sliding rod (73) is fixedly connected with a flow guide plate (74), the inner surface of the guide plate (71) is penetrated and threadedly connected with a screw rod (76), and the lower surface of the screw rod (76) is fixedly connected with a hand wheel (75).

2. A novel controllable piston accumulator according to claim 1, characterized in that: The buffer assembly comprises a rubber pad (81) which is piston-connected to the inner surface of the shell (1), the inner surface of the rubber pad (81) is fixedly connected with a support plate (82), the inner wall of the bottom end of the support plate (82) is elastically connected with a moving ring (84) through a compression spring (83), and the upper surface of the moving ring (84) is fixedly connected with a baffle (85).

3. A novel controllable piston accumulator according to claim 1, characterized in that: The upper surface of the guide plate (71) and the lower surface of the sliding rod (73) are both provided with a hinged seat, and the upper and lower ends of the connecting rod (72) are connected with the hinged seats on the upper surface of the guide plate (71) and the lower surface of the sliding rod (73) respectively.

4. A novel controllable piston accumulator according to claim 1, characterized in that: The sliding rod (73) is penetrated and slidingly connected to the right surface of the oil inlet pipe (4), and the flow guide plate (74) is arranged in an arc shape.

5. A novel controllable piston accumulator according to claim 1, characterized in that: The screw rod (76) is rotationally connected to the lower surface of the oil inlet pipe (4), the middle section of the oil inlet pipe (4) is arranged in a convex circular ring shape, and the flow guide plate (74) is slidingly connected to the inner wall of the oil inlet pipe (4).

6. A novel controllable piston accumulator according to claim 2, characterized in that: The centers of the rubber pad (81), the support plate (82), the moving ring (84) and the baffle (85) are on the same axis.

7. A novel controllable piston accumulator according to claim 2, characterized in that: The moving ring (84) is penetrated and piston-connected to the upper surface of the support plate (82), the top end of the baffle (85) is arranged in an arc surface, and the diameter of the baffle (85) is smaller than that of the rubber pad (81).

8. A novel controllable piston accumulator according to claim 2, characterized in that: The compression spring (83), the moving ring (84) and the baffle (85) are provided with two groups, and the two groups of the compression spring (83), the moving ring (84) and the baffle (85) are symmetrically distributed upward and downward with the center line of the support plate (82) as the axis.

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