Split combined type energy accumulator

Abstract

The utility model relates to the technical field of energy accumulators, in particular to a split combined type energy accumulator. Comprising an upper shell, a lower shell and a diaphragm, the opening end of the upper shell and the opening end of the lower shell are connected through threads, the diaphragm is arranged in the lower shell, the interior of the upper shell and the interior of the lower shell are divided into a nitrogen bin and a hydraulic oil bin through the diaphragm, a reinforcing edge is integrally and fixedly connected to the outer side of the opening end of the upper shell, and a fixing edge is arranged above the diaphragm. The center of the bottom of the diaphragm protrudes upwards, a reinforcing piece is embedded in the top face of the protrusion, an inflation and deflation hole communicated with the interior of the upper shell is formed in the upper portion of the upper shell, and a hydraulic oil hole communicated with the lower shell is formed in the bottom of the lower shell. The upper shell and the lower shell are connected through the threads, so that the diaphragm can be conveniently replaced and maintained, the service life of the energy accumulator is prolonged, and the maintenance cost is reduced; the nylon reinforcing sheet is embedded in the top end of the diaphragm, frequent impact of high-pressure oil can be effectively relieved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of accumulators, in particular to a split combined accumulator. Background Art

[0002] An energy storage device is a device that stores energy and releases it when needed. It can be used in many fields such as power systems, new energy, and smart connected vehicles. It is an important part of the future energy transformation direction.

[0003] The prior art discloses a welded combined diaphragm accumulator with a publication number of CN201401377Y, which comprises a closed shell consisting of an upper shell and a lower shell, wherein a capsule diaphragm is arranged in the shell; an air charging interface is arranged at the top of the upper shell, and an inlet and outlet liquid interface is arranged at the lower end of the lower shell; an arc protrusion is arranged at the open end of the capsule diaphragm; a step ring groove is arranged on the inner side of the lower port of the upper shell, and a retaining ring is connected to the step ring groove, and an arc groove is arranged on the outer peripheral wall of the lower end of the retaining ring; the arc protrusion is embedded in the arc groove, and a metal liner is arranged at the bottom center of the capsule diaphragm, which can greatly improve the pressure resistance value of the combined diaphragm accumulator and meet the application requirements of many fields such as vehicle shock absorption, steering assistance and engineering machinery buffering.

[0004] However, the integrated welded structure makes it difficult to replace and maintain the internal diaphragm. Although the metal liner can increase the pressure resistance value, it cannot effectively alleviate the frequent impact of high-pressure oil, thereby reducing the service life of the accumulator. Utility Model Content

[0005] In order to solve the above-mentioned technical problems or one of the technical problems existing in the prior art, the utility model discloses a split combined accumulator, comprising an upper shell, a lower shell and a diaphragm, the open ends of the upper shell and the lower shell are connected by threads, the diaphragm is arranged in the interior of the lower shell, and the interior of the upper shell and the lower shell is divided into a nitrogen tank and a hydraulic oil tank by the diaphragm, the outer side of the open end of the upper shell is integrally fixed with a reinforcement edge, the inner side of the reinforcement edge is provided with an internal thread, the inner side of the open end of the upper shell is integrally fixed with a fixed edge, the outer side surface of the open end of the lower shell is provided with an external thread screwed with the internal thread, the end surface of the open end of the lower shell is provided with a groove, the top of the diaphragm is bent outwardly and engaged with the groove, the fixed edge is arranged above the diaphragm, the center of the bottom of the diaphragm protrudes upward, and the top surface of the protrusion is inlaid with a reinforcement sheet, the upper part of the upper shell is provided with a charging and discharging hole connected with the interior of the upper shell, and the bottom of the lower shell is provided with a hydraulic oil hole connected with the lower shell.

[0006] Furthermore, a screw is threaded inside the inflation and deflation holes.

[0007] Furthermore, the side wall of the diaphragm is in contact with the side wall of the lower shell.

[0008] Furthermore, the top of one side of the groove is a curved surface, and the bottom surface of the bent portion of the top of the diaphragm is in an arc shape that engages with the curved surface.

[0009] Furthermore, the top surface of the opening end of the lower shell is on the same horizontal plane as the top surface of the diaphragm.

[0010] Furthermore, the upper part of the diaphragm is a nitrogen tank, and the lower part is a hydraulic oil tank.

[0011] Furthermore, the reinforcement sheet is a nylon reinforcement sheet.

[0012] Compared with the prior art, the upper and lower shells of the utility model are connected by threads, which can facilitate the replacement and maintenance of the diaphragm, increase the service life of the accumulator and reduce maintenance costs; the reinforced edge not only enhances the structural strength of the upper shell, but also further improves the overall sealing performance; the diaphragm is installed by groove engagement, which makes disassembly and replacement more convenient, and the diaphragm is fixed and limited from above by the fixed edge, making the diaphragm installation more stable and firm without affecting the convenience of its disassembly; a nylon reinforcement sheet is embedded in the top of the diaphragm, which can effectively alleviate the frequent impact of high-pressure oil and increase the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0016] See also Figure 1 , 2The technical solution adopted by the utility model shown is: a split combined accumulator, including an upper shell 1, a lower shell 2 and a diaphragm 3, the open ends of the upper shell 1 and the lower shell 2 are connected by threads, the diaphragm 3 is arranged inside the lower shell 2, and the interior of the upper shell 1 and the lower shell 2 is divided into a nitrogen tank 11 and a hydraulic oil tank 21 by the diaphragm 3, the outer side of the open end of the upper shell 1 is integrally fixed with a reinforced edge 12, the inner side of the reinforced edge 12 is provided with an internal thread, and the inner side of the open end of the upper shell 1 is fixed with a reinforced edge 12. The body is fixed with a fixed edge 13, the outer side surface of the open end of the lower shell 2 is provided with an external thread screwed with the internal thread, the end surface of the open end of the lower shell 2 is provided with a groove, the top of the diaphragm 3 is bent outward and engaged with the groove, the fixed edge 13 is arranged above the diaphragm 3, the center of the bottom of the diaphragm 3 protrudes upward, and the top surface of the protrusion is inlaid with a reinforcing sheet 6, the upper part of the upper shell 1 is provided with a charging and discharging hole 4 connected with the interior of the upper shell, and the bottom of the lower shell 2 is provided with a hydraulic oil hole 5 connected with the lower shell 2.

[0017] Preferably, a screw 7 is threadedly connected inside the charging and discharging hole 4 to achieve the sealing and opening functions of the charging and discharging hole. When charging, discharging or maintenance is required, the screw can be easily removed, which is convenient for operation.

[0018] Preferably, the side wall of the diaphragm 3 is in contact with the side wall of the lower shell 2 to ensure the sealing between the diaphragm 3 and the lower shell 2, prevent the mixing between the nitrogen tank 11 and the hydraulic oil tank 21, improve the performance stability of the accumulator, and ensure the independence and functional integrity of the nitrogen tank and the hydraulic oil tank.

[0019] Preferably, the top of one side of the groove is an arc surface, and the bottom surface of the top bend of the diaphragm 3 is an arc shape that engages with the arc surface, so that the top of the diaphragm 3 fits more closely with the groove of the lower shell 2, thereby enhancing the connection strength between the diaphragm and the groove and further improving the sealing performance of the accumulator.

[0020] Preferably, the top surface of the opening end of the lower shell 2 is at the same level as the top surface of the diaphragm 3, ensuring that after the upper shell 1 and the lower shell 2 are connected, the top of the diaphragm 3 remains flush with the connection, thereby ensuring the sealing performance of the accumulator connection.

[0021] Preferably, the diaphragm 3 has a nitrogen tank 11 above and a hydraulic oil tank 21 below. The nitrogen tank is inflated by a charging device. At this time, the diaphragm 3 is deformed in the opposite direction under the action of high air pressure. One side of the hydraulic oil hole leads to the moving parts. High-pressure oil enters the hydraulic oil tank through the oil hole, squeezing the diaphragm 3 while pressurizing the nitrogen tank, thereby achieving the purpose of energy storage.

[0022] Preferably, the reinforcing sheet 6 is a nylon reinforcing sheet, which improves the durability of the diaphragm, enables it to maintain good performance when subjected to high pressure or frequent deformation, and extends the service life of the accumulator.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A split combined accumulator, comprising an upper shell (1), a lower shell (2) and a diaphragm (3), characterized in that: The open ends of the upper shell (1) and the lower shell (2) are connected by threads, the diaphragm (3) is arranged inside the lower shell (2), and the interior of the upper shell (1) and the lower shell (2) are divided into a nitrogen tank (11) and a hydraulic oil tank (21) by the diaphragm (3), the outer side of the open end of the upper shell (1) is integrally fixedly connected with a reinforcement edge (12), the inner side of the reinforcement edge (12) is provided with an internal thread, the inner side of the open end of the upper shell (1) is integrally fixedly connected with a fixed edge (13), and the lower shell (2) is integrally fixedly connected with a fixed edge (13). The outer side surface of the end is provided with an external thread screwed with the internal thread, the end surface of the open end of the lower shell (2) is provided with a groove, the top of the diaphragm (3) is bent outward and engaged with the groove, the fixed edge (13) is arranged above the diaphragm (3), the center of the bottom of the diaphragm (3) protrudes upward, and the top surface of the protrusion is inlaid with a reinforcing sheet (6), the upper part of the upper shell (1) is provided with a charging and discharging hole (4) connected to the interior of the upper shell, and the bottom of the lower shell (2) is provided with a hydraulic oil hole (5) connected to the lower shell (2).

2. A split combined accumulator according to claim 1, characterized in that: A screw (7) is threadedly connected inside the inflation and deflation hole (4).

3. A split combined accumulator according to claim 1, characterized in that: The side wall of the diaphragm (3) is in contact with the side wall of the lower shell (2).

4. A split combined accumulator according to claim 1, characterized in that: The top of one side of the groove is a curved surface, and the bottom surface of the top bend of the diaphragm (3) is in the shape of an arc that engages with the curved surface.

5. A split combined accumulator according to claim 1, characterized in that: The top surface of the opening end of the lower shell (2) and the top surface of the diaphragm (3) are on the same horizontal plane.

6. A split combined accumulator according to claim 1, characterized in that: The upper part of the diaphragm (3) is a nitrogen tank (11), and the lower part is a hydraulic oil tank (21).

7. A split combined accumulator according to claim 1, characterized in that: The reinforcement sheet (6) is a nylon reinforcement sheet.

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