Piston type energy accumulator

Abstract

The utility model discloses a piston type energy accumulator, which belongs to the technical field of energy accumulators and comprises a cylinder body, sealing covers are arranged at the top end and the bottom end of the cylinder body, a piston block is arranged in the cylinder body and comprises an upper piston block, a middle piston block and a lower piston block which are sequentially distributed from top to bottom, and first annular grooves are formed in the outer walls of the top and the bottom of the middle piston block. The sides, close to the piston middle block, of the piston upper block and the piston lower block are each provided with a second annular groove communicating with the first annular groove. The sealing performance of the piston block is improved by arranging the two first rubber sealing rings, and the piston block is divided into the upper piston block, the middle piston block and the lower piston block, so that a worker can conveniently disassemble the upper piston block, the middle piston block and the lower piston block, inspect and replace the first rubber sealing rings, and the working efficiency is improved. The situation that the sealing performance is affected by surface abrasion of the first rubber sealing ring is avoided, and the situation that the sealing performance is affected by rotation of the first rubber sealing ring during use is avoided through cooperation of a limiting plate and a limiting groove.

Description

Technical Field

[0001] The utility model relates to the technical field of accumulators and belongs to a piston accumulator. Background Art

[0002] The accumulator is an energy storage device used in hydraulic starting systems. It can convert the energy in the system into compression energy or potential energy and store it at the right time. When the system needs it, it converts the compression energy or potential energy into hydraulic or gas pressure energy and releases it to replenish the system. When the system pressure increases instantly, it can absorb this part of the energy to ensure the normal pressure of the entire system. The piston accumulator is a type of accumulator. The piston accumulator uses a piston to separate the gas and liquid. There is a seal between the piston and the inner wall of the cylindrical accumulator, so the oil is not easily oxidized. This accumulator has a long life, light weight, easy installation, simple structure and convenient maintenance.

[0003] For example, a piston accumulator with a prior art publication number of CN218093652U has a simple structure, convenient operation, good sealing effect at both ends of the cylinder body, avoiding the phenomenon of slow gas leakage during delivery, reducing maintenance costs, and effectively improving the convenience of using the accumulator.

[0004] However, the above-mentioned prior art still has the following problems when in use: since the piston moves frequently in the cylinder, the sealing ring on the surface of the piston will wear after long-term use, thereby reducing the sealing performance of the piston and affecting the normal operation of the accumulator. Based on this, the utility model provides a piston accumulator that is easy to replace the piston sealing ring. Utility Model Content

[0005] To this end, the utility model provides a piston accumulator to solve the problem in the prior art that a common long spiral drill is difficult to drill due to a deep underground valve plate foundation.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A piston accumulator comprises a cylinder body, wherein the top and bottom ends of the cylinder body are both provided with sealing covers, a piston block is arranged in the cylinder body, the piston block comprises an upper piston block, a middle piston block and a lower piston block which are sequentially distributed from top to bottom, a first annular groove is provided on the top and bottom outer walls of the middle piston block, a second annular groove communicating with the first annular groove is provided on the side of the upper piston block and the lower piston block close to the middle piston block, a first rubber sealing ring is provided between the second annular groove and the first annular groove for improving the sealing performance between the piston block and the cylinder body, a second rubber sealing ring is fixedly provided on the side close to the two sealing covers, a sealing groove is provided on the top and bottom ends of the cylinder body, the second rubber sealing ring is inserted in the sealing groove for improving the sealing performance between the sealing cover and the cylinder body.

[0008] Furthermore, a circular groove is provided at the center of the top end of the piston upper block, a hexagonal groove is provided at the center of the bottom end of the piston middle block, and connecting holes are provided between the piston upper block, the piston middle block and the piston lower block. Multiple connecting holes, a circular groove and a hexagonal groove are connected to each other, and a structure for fixing the piston upper block, the piston middle block and the piston lower block is placed.

[0009] Furthermore, a first bolt is provided in the circular groove, the bottom end of the first bolt passes through the through hole and extends into the hexagonal groove, a hexagonal nut is fixed in the hexagonal groove, the hexagonal nut is sleeved on the first bolt and threadedly connected with the first bolt, and the first bolt and the hexagonal nut are used in combination to facilitate the staff to disassemble and assemble the piston upper block, the piston middle block and the piston lower block.

[0010] Furthermore, a plurality of limit plates are fixedly provided at the top and bottom ends of each first rubber sealing ring, a plurality of limit grooves matching the limit plates are provided on the inner wall of each first annular groove and the inner wall of each second annular groove, and the plurality of limit plates are respectively inserted into the plurality of limit grooves. When the plurality of limit plates are plugged into the plurality of limit grooves, the first rubber sealing ring can be prevented from rotating.

[0011] Furthermore, a plurality of positioning rods are fixedly provided at the top and bottom ends of the piston middle block, a plurality of positioning grooves matched with the positioning rods are provided at the bottom end of the piston upper block and the top end of the piston lower block, and the plurality of positioning rods are respectively inserted into the plurality of positioning grooves to assist the staff in quickly assembling the piston upper block, the piston middle block and the piston lower block.

[0012] Furthermore, the two sealing covers are fixed to the cylinder body by a plurality of second bolts, so that it is convenient for the staff to disassemble and assemble the sealing covers.

[0013] Furthermore, the cylinder body outer wall fixing sleeve is provided with two mounting brackets distributed up and down, and both mounting brackets are provided with a plurality of mounting holes.

[0014] Furthermore, connecting pipes are fixedly passed through the two sealing covers, and the connecting pipes are communicated with the inside of the cylinder body for connecting pipelines.

[0015] The utility model has the following advantages:

[0016] 1. The utility model improves the sealing performance of the piston block by arranging two first rubber sealing rings, and divides the piston block into an upper piston block, a middle piston block and a lower piston block, so that it is convenient for the staff to disassemble the upper piston block, the middle piston block and the lower piston block, and to check and replace the first rubber sealing ring, so as to avoid the surface wear of the first rubber sealing ring affecting the sealing performance, and utilizes the cooperation between the limiting plate and the limiting groove to avoid the first rubber sealing ring from rotating during use and affecting the sealing performance.

[0017] 2. Through the cooperation of multiple positioning rods and multiple positioning grooves, it is convenient for the staff to quickly fix the piston upper block, the piston middle block and the piston lower block together. A second rubber sealing ring is set on the two sealing covers, and the second rubber sealing ring is plugged into the sealing groove to improve the sealing between the sealing cover and the cylinder body to prevent leakage. Two mounting brackets are set on the cylinder body to facilitate the installation and fixation of the cylinder body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0020] Figure 1 The overall structural diagram provided by the utility model;

[0021] Figure 2 A sectional view of the overall structure provided by the utility model;

[0022] Figure 3 A structural diagram of the piston block provided by the utility model;

[0023] Figure 4 A bottom view schematic diagram of the piston lower block provided by the utility model;

[0024] Figure 5 This is a schematic diagram of the piston middle block provided by the utility model.

[0025] In the figure: 1, cylinder body; 2, sealing cover; 3, piston block; 4, first annular groove; 5, second annular groove; 6, first rubber sealing ring; 7, second rubber sealing ring; 8, sealing groove; 9, circular groove; 10, hexagonal groove; 11, connecting hole; 12, first bolt; 13, hexagonal nut; 14, limit plate; 15, limit groove; 16, positioning rod; 17, positioning groove; 18, mounting bracket; 19, mounting hole; 20, connecting pipe;

[0026] 301, piston upper block; 302, piston middle block; 303, piston lower block. DETAILED DESCRIPTION

[0027] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Refer to the instruction manual Figure 1-5 The utility model provides a piston accumulator, including a cylinder body 1, a sealing cover 2 is provided at the top and the bottom of the cylinder body 1, and the two sealing covers 2 are fixed to the cylinder body 1 by a plurality of second bolts, so that the staff can disassemble and assemble the sealing covers 2. A connecting pipe 20 is fixedly passed through the two sealing covers 2, and the connecting pipe 20 is communicated with the inside of the cylinder body 1 for use with the connecting pipe 20. A piston block 3 is provided in the cylinder body 1, and the piston block 3 includes a piston upper block 301, a piston middle block 302 and a piston lower block 303 distributed in sequence from top to bottom. A first annular groove 4 is provided on the top and bottom outer walls of the piston middle block 302, and a second annular groove 5 connected to the first annular groove 4 is provided on the side of the piston upper block 301 and the piston lower block 303 close to the piston middle block 302, and a first rubber sealing ring 6 is provided between the second annular groove 5 and the first annular groove 4, so as to improve the sealing performance between the piston block 3 and the cylinder body 1;

[0029] Next, a circular groove 9 is opened at the center of the top end of the piston upper block 301, a hexagonal groove 10 is opened at the center of the bottom end of the piston lower block 303, and a connecting hole 11 is opened between the piston upper block 301, the piston middle block 302 and the piston lower block 303. A plurality of connecting holes 11, a circular groove 9 and a hexagonal groove 10 are connected to each other, and are used to place the structure for fixing the piston upper block 301, the piston middle block 302 and the piston lower block 303;

[0030] A first bolt 12 is provided in the circular groove 9, the bottom end of the first bolt 12 passes through the through hole and extends into the hexagonal groove 10, a hexagonal nut 13 is fixed in the hexagonal groove 10, the hexagonal nut 13 is sleeved on the first bolt 12 and is threadedly connected to the first bolt 12, and the first bolt 12 and the hexagonal nut 13 are matched to facilitate the staff to disassemble and assemble the piston upper block 301, the piston middle block 302 and the piston lower block 303;

[0031] Furthermore, in order to prevent the first rubber sealing ring 6 from rotating during use, a plurality of limit plates 14 are fixedly provided at the top and bottom ends of each first rubber sealing ring 6, and a plurality of limit grooves 15 matching the limit plates 14 are provided on the inner wall of each first annular groove 4 and the inner wall of each second annular groove 5. The plurality of limit plates 14 are respectively inserted into the plurality of limit grooves 15. When the plurality of limit plates 14 are plugged into the plurality of limit grooves 15, the first rubber sealing ring 6 can be prevented from rotating.

[0032] When in use, when the piston block 3 moves in the cylinder body 1, the two first rubber sealing rings 6 on the surface can improve the sealing performance, and the piston block 3 is divided into the piston upper block 301, the piston middle block 302 and the piston lower block 303. After long-term use, the staff can first take out the piston block 3, and then loosen the first bolt 12 to separate the piston upper block 301, the piston middle block 302 and the piston lower block 303, so as to facilitate the inspection and replacement of the first rubber sealing ring 6 and avoid the surface wear of the first rubber sealing ring 6 affecting the sealing performance. When installing the first rubber sealing ring 6, the multiple limiting plates 14 on the first rubber sealing ring 6 are respectively inserted into the multiple limiting grooves 15, and then the first bolt 12 and the hexagonal nut 13 can be used to fix the piston upper block 301, the piston middle block 302 and the piston lower block 303 together, and then placed in the cylinder body 1 for use. The structure is simple and convenient for the staff to disassemble and replace the first rubber sealing ring 6.

[0033] Refer to the instruction manual Figure 1-5 A second rubber sealing ring 7 is fixedly disposed on the adjacent side of the two sealing covers 2, and a sealing groove 8 is provided at the top and bottom of the cylinder body 1. The second rubber sealing ring 7 is inserted into the sealing groove 8 to improve the sealing performance between the sealing cover 2 and the cylinder body 1;

[0034] A plurality of positioning rods 16 are fixedly provided at the top and bottom of the piston middle block 302, and a plurality of positioning grooves 17 adapted to the positioning rods 16 are provided at the bottom of the piston upper block 301 and the top of the piston lower block 303. The plurality of positioning rods 16 are respectively inserted into the plurality of positioning grooves 17 to assist the staff in quickly assembling the piston upper block 301, the piston middle block 302 and the piston lower block 303;

[0035] The outer wall of the cylinder body 1 is fixedly sleeved with two mounting brackets 18 distributed up and down, and a plurality of mounting holes 19 are opened on the two mounting brackets 18;

[0036] By arranging a plurality of positioning rods 16 on the piston middle block 302 and using the plurality of positioning rods 16 to cooperate with the plurality of positioning grooves 17, it is convenient for the staff to quickly fix the piston upper block 301, the piston middle block 302 and the piston lower block 303 together. A second rubber sealing ring 7 is arranged on both sealing covers 2 and the second rubber sealing ring 7 is plugged into the sealing groove 8, so that the sealing between the sealing cover 2 and the cylinder body 1 can be improved to prevent leakage. Two mounting brackets 18 are arranged on the cylinder body 1 to facilitate the installation and fixation of the cylinder body 1.

[0037] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A piston accumulator, comprising a cylinder (1), characterized in that: The top and bottom ends of the cylinder body (1) are both provided with sealing covers (2), and a piston block (3) is provided inside the cylinder body (1), wherein the piston block (3) comprises an upper piston block (301), a middle piston block (302) and a lower piston block (303) which are sequentially arranged from top to bottom; The outer walls of the top and bottom of the piston middle block (302) are both provided with a first annular groove (4); the upper piston block (301) and the lower piston block (303) are both provided with a second annular groove (5) connected to the first annular groove (4) on one side close to the piston middle block (302); a first rubber sealing ring (6) is provided between the second annular groove (5) and the first annular groove (4) to improve the sealing performance between the piston block (3) and the cylinder body (1); A second rubber sealing ring (7) is fixedly provided on one side of the two sealing covers (2) that are close to each other, and a sealing groove (8) is provided at the top and bottom of the cylinder body (1). The second rubber sealing ring (7) is inserted into the sealing groove (8) to improve the sealing performance between the sealing cover (2) and the cylinder body (1).

2. A piston accumulator according to claim 1, characterized in that: A circular groove (9) is provided at the center of the top end of the piston upper block (301), a hexagonal groove (10) is provided at the center of the bottom end of the piston lower block (303), and connecting holes (11) are provided between the piston upper block (301), the piston middle block (302) and the piston lower block (303), and a plurality of connecting holes (11), a circular groove (9) and a hexagonal groove (10) are connected.

3. A piston accumulator according to claim 2, characterized in that: A first bolt (12) is arranged in the circular groove (9), the bottom end of the first bolt (12) passes through the through hole and extends into the hexagonal groove (10), a hexagonal nut (13) is fixedly arranged in the hexagonal groove (10), and the hexagonal nut (13) is sleeved on the first bolt (12) and is threadedly connected to the first bolt (12).

4. A piston accumulator according to claim 1, characterized in that: A plurality of limiting plates (14) are fixedly provided at the top and bottom of each first rubber sealing ring (6); a plurality of limiting grooves (15) matching the limiting plates (14) are provided on the inner wall of each first annular groove (4) and the inner wall of each second annular groove (5); the plurality of limiting plates (14) are respectively inserted into the plurality of limiting grooves (15) to prevent the first rubber sealing ring (6) from rotating.

5. The piston accumulator according to claim 1, characterized in that: A plurality of positioning rods (16) are fixedly provided at the top and bottom of the piston middle block (302), a plurality of positioning grooves (17) adapted to the positioning rods (16) are provided at the bottom of the piston upper block (301) and the top of the piston lower block (303), and the plurality of positioning rods (16) are respectively inserted into the plurality of positioning grooves (17) to assist in the assembly of the piston upper block (301), the piston middle block (302) and the piston lower block (303).

6. The piston accumulator according to claim 1, characterized in that: The two sealing covers (2) are both fixed to the cylinder body (1) via a plurality of second bolts, making it easy to disassemble the sealing covers (2).

7. The piston accumulator according to claim 1, characterized in that: The outer wall of the cylinder body (1) is fixedly sleeved with two mounting frames (18) distributed up and down, and a plurality of mounting holes (19) are provided on the two mounting frames (18).

8. The piston accumulator according to claim 1, characterized in that: A connecting pipe (20) is fixedly passed through each of the two sealing covers (2), and the connecting pipe (20) is communicated with the interior of the cylinder body (1).

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