Diaphragm type energy accumulator with high sealing performance

Abstract

The invention discloses a high-sealing diaphragm type energy accumulator, which relates to the technical field of energy accumulators, and comprises a lower shell and an upper shell, and further comprises a connecting unit arranged between the lower shell and the upper shell, and a working unit arranged in the lower shell and the upper shell; the connecting unit comprises a liquid inlet and outlet formed in the middle of the bottom end of the lower shell, an oil valve body fixedly connected to the bottom end of the liquid inlet and outlet, a first inflation valve fixedly connected to one side of the lower shell, and a connecting assembly arranged at the bottom end of the upper shell. The working unit comprises partition assemblies arranged between the hydraulic cavity and the main air pressure cavity and between the first standby air pressure cavity and the second standby air pressure cavity. According to the diaphragm type energy accumulator with the high sealing performance, the connection stability of the lower shell and the upper shell is improved, disassembly is convenient and fast, meanwhile, the convenience of replacing the double diaphragms is improved, and the service life of the energy accumulator is greatly prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of accumulators, in particular to a high-sealing diaphragm accumulator. Background Art

[0002] The accumulator is an energy storage device in the hydraulic and pneumatic system. It converts the energy in the system into compression energy or potential energy and stores it at the appropriate time. When the system needs it, it converts the compression energy or potential energy into hydraulic or air pressure and releases it to replenish the system. When the system pressure increases instantly, it can absorb this part of the energy to ensure normal pressure in the entire system.

[0003] After searching the publication (announcement) number: CN106468291A, a metal diaphragm isolated accumulator is disclosed, which is characterized by: including a shell, an end cover, a three-way joint, a piston, a metal diaphragm and an oil valve body. The shell and the end cover form a closed container. A three-way joint is connected to the top of the shell. The piston and the metal diaphragm are arranged in the shell. The upper end of the corrugated metal diaphragm is connected to the piston, and the lower end is assembled with the end cover. The middle part of the end cover is provided with an oil valve body. This technical solution makes the accumulator have good airtightness through the sealing of the metal isolation part. The helium leak detection can reach a very high level and can be used in high-end system applications with very high requirements. The diaphragm element of the accumulator has a long service life.

[0004] Although the above scheme makes the accumulator have good air tightness and the diaphragm element of the accumulator has a long service life, the upper and lower shells of the accumulator are not stable enough when connected, the air tightness is poor after long-term use, the disassembly is not convenient enough, and the diaphragm in the accumulator is easily damaged after a certain period of use and needs to be replaced in time. Summary of the invention

[0005] The main purpose of the present invention is to provide a highly sealed diaphragm accumulator. By setting a connecting unit, the problems that the upper and lower shells of the accumulator are not stable when connected, the airtightness is poor after long-term use, and the disassembly is not convenient are solved. By setting a working unit, the problem that the diaphragm in the accumulator is easily damaged after a certain period of use and needs to be replaced in time is solved.

[0006] To achieve the above object, the present invention provides the following technical solutions: A high-sealing diaphragm accumulator comprises a lower shell and an upper shell, a connecting unit arranged between the lower shell and the upper shell, and a working unit arranged inside the lower shell and the upper shell; The connecting unit includes a liquid inlet and outlet opened in the middle of the bottom end of the lower shell, an oil valve body fixedly connected to the bottom end of the liquid inlet and outlet, a first inflation valve fixedly connected to one side of the lower shell, and a connecting assembly arranged at the bottom end of the upper shell; The working unit includes a hydraulic chamber opened at the bottom end of the lower shell, a main air pressure chamber arranged at the top of the hydraulic chamber, a first backup air pressure chamber and a second backup air pressure chamber opened in the upper shell, and a partition component respectively arranged between the hydraulic chamber and the main air pressure chamber and between the first backup air pressure chamber and the second backup air pressure chamber.

[0007] Preferably, the connection assembly in the connection unit includes a plurality of through holes opened in the middle of the bottom end of the upper shell, an extension block fixedly connected to both sides of the bottom end of the upper shell, a second elastic column fixedly connected to the front and rear sides of the extension block, a second spring arranged on the surface of the second elastic column, a limit block arranged on one side of the extension block, a connection block arranged on one side of the limit block, and a locking bolt threadedly connected to the inside of the connection block; The first standby air pressure chamber is connected to the main air pressure chamber through a through hole.

[0008] Preferably, the connection unit further comprises a second inflation valve fixedly connected to the top end of the upper shell, and a sensor arranged on one side of the second inflation valve; The bottom end of the second inflation valve is communicated with the second standby air pressure chamber.

[0009] Preferably, the first inflation valve in the connecting unit is connected to the main air pressure chamber, and the extending block, the limiting block and the connecting block all extend to the interior of the lower shell.

[0010] Preferably, the partition assembly in the working unit includes a double diaphragm arranged between the hydraulic chamber and the main air pressure chamber or between the first backup air pressure chamber and the second backup air pressure chamber, two semicircular rings fixedly connected to the sides of the double diaphragm, a fixed block fixedly connected to the middle of the semicircular rings, a vertical hole opened in the fixed block, a partition plate fixedly connected to the middle of the vertical hole, a first elastic column fixedly connected to the upper and lower sides of the partition plate, a first spring fixedly connected to the surface of the first elastic column, and a positioning block fixedly connected to one end of the first elastic column.

[0011] Preferably, the partition assembly in the working unit further comprises flexible bonding blocks fixedly connected to both ends of the two semicircular rings, an adhesive layer fixedly connected to the two flexible bonding blocks on one side, a clamping layer fixedly connected to the two flexible bonding blocks on the other side, and a plurality of triangular blocks fixedly connected to one side of the clamping layer; The triangular blocks extend to the interior of the adhesive layer.

[0012] Preferably, the lower shell and the upper shell are both made of metal.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the lower shell is aligned with the upper shell through the setting of the connecting unit, and then the upper shell is pressed downward, so that the extension block, the limit block and the connecting block are all extended to the interior of the lower shell, and under the elastic force of the second elastic column and the second spring, the second elastic column is driven to extend to the deep inside of the lower shell, and at the same time, the through hole connects the first standby air pressure chamber and the main air pressure chamber, and then the lower shell and the upper shell are locked by the locking bolt, so as to improve the connection stability of the lower shell and the upper shell, and facilitate disassembly.

[0014] 2. In the present invention, through the setting of the working unit, the two locking bolts are removed, and then the lower shell and the upper shell are disassembled, and the double diaphragm inside the lower shell is pulled to separate the flexible fitting blocks at the joints of the multiple semicircular rings, and then the multiple semicircular rings are pulled out for replacement. For the double diaphragm inside the upper shell, if it is damaged, the entire upper shell needs to be replaced, which improves the convenience of replacing the double diaphragm.

[0015] 3. In the present invention, a double diaphragm is arranged in the upper shell to divide the interior of the upper shell into two spare air pressure chambers. When the double diaphragm above the hydraulic chamber fails, it automatically switches to the main air pressure chamber and the first spare air pressure chamber and the second spare air pressure chamber, which greatly extends the service life of the accumulator and can ensure the normal operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle; Figure 4 For the present invention Figure 2 A magnified schematic diagram of the structure at B in the middle; Figure 5 For the present invention Figure 2 Enlarged schematic diagram of the structure at point C in the middle.

[0017] In the figure: 1. Lower shell; 2. Upper shell; 3. First inflation valve; 4. Locking bolt; 5. Second inflation valve; 6. Oil valve body; 7. Liquid inlet and outlet; 8. Hydraulic chamber; 9. Double diaphragm; 10. Main air pressure chamber; 11. Through hole; 12. First spare air pressure chamber; 13. Second spare air pressure chamber; 14. Positioning block; 15. First spring; 16. First elastic column; 17. Partition plate; 18. Fixed block; 19. Semicircular ring; 20. Flexible fitting block; 21. Adhesive layer; 22. Clamping layer; 23. Triangular block; 24. Extension block; 25. Second spring; 26. Second elastic column; 27. Limit block; 28. Connecting block. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods. Example

[0019] like Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 As shown, the high-sealing diaphragm accumulator includes a lower shell 1 and an upper shell 2, a connecting unit arranged between the lower shell 1 and the upper shell 2, and a working unit arranged inside the lower shell 1 and the upper shell 2; The connecting unit includes a liquid inlet and outlet 7 opened in the middle of the bottom end of the lower shell 1, an oil valve body 6 fixedly connected to the bottom end of the liquid inlet and outlet 7, a first inflation valve 3 fixedly connected to one side of the lower shell 1, and a connecting assembly arranged at the bottom end of the upper shell 2; The working unit includes a hydraulic chamber 8 opened at the bottom end of the lower shell 1, a main air pressure chamber 10 arranged at the top of the hydraulic chamber 8, a first backup air pressure chamber 12 and a second backup air pressure chamber 13 opened in the upper shell 2, and partition components respectively arranged between the hydraulic chamber 8 and the main air pressure chamber 10 and between the first backup air pressure chamber 12 and the second backup air pressure chamber 13.

[0020] The connection assembly in the connection unit includes a plurality of through holes 11 opened in the middle of the bottom end of the upper shell 2, an extension block 24 fixedly connected to both sides of the bottom end of the upper shell 2, a second elastic column 26 fixedly connected to the front and rear sides of the extension block 24, a second spring 25 arranged on the surface of the second elastic column 26, a limit block 27 arranged on one side of the extension block 24, a connection block 28 arranged on one side of the limit block 27, and a locking bolt 4 threadedly connected to the inside of the connection block 28; The first standby air pressure chamber 12 is connected to the main air pressure chamber 10 via a through hole 11 .

[0021] The connection unit further includes a second inflation valve 5 fixedly connected to the top end of the upper shell 2, and a sensor arranged on one side of the second inflation valve 5; The bottom end of the second inflation valve 5 is connected to the second standby air pressure chamber 13 .

[0022] The first inflation valve 3 in the connection unit is connected to the main air pressure chamber 10 , and the extension block 24 , the limit block 27 and the connection block 28 all extend to the interior of the lower shell 1 .

[0023] The partition assembly in the working unit includes a double diaphragm 9 arranged between the hydraulic chamber 8 and the main air pressure chamber 10 or between the first backup air pressure chamber 12 and the second backup air pressure chamber 13, two semicircular rings 19 fixedly connected to the side of the double diaphragm 9, a fixed block 18 fixedly connected to the middle of the semicircular ring 19, a vertical hole opened in the fixed block 18, a partition plate 17 fixedly connected to the middle of the vertical hole, a first elastic column 16 fixedly connected to the upper and lower sides of the partition plate 17, a first spring 15 fixedly connected to the surface of the first elastic column 16, and a positioning block 14 fixedly connected to one end of the first elastic column 16.

[0024] The partition assembly in the working unit also includes a flexible bonding block 20 fixedly connected to both ends of the two semicircular rings 19, an adhesive layer 21 fixedly connected to the two flexible bonding blocks 20 on one side, a clamping layer 22 fixedly connected to the two flexible bonding blocks 20 on the other side, and a plurality of triangular blocks 23 fixedly connected to one side of the clamping layer 22; The triangular block 23 extends to the inside of the adhesive layer 21 .

[0025] The lower shell 1 and the upper shell 2 are both made of metal.

[0026] Align the lower shell 1 with the upper shell 2, and then squeeze the upper shell 2 downward so that the extension block 24, the limit block 27 and the connecting block 28 all extend to the interior of the lower shell 1, and under the elastic force of the second elastic column 26 and the second spring 25, the second elastic column 26 is driven to extend to the deep inside of the lower shell 1. At the same time, the through hole 11 connects the first backup air pressure chamber 12 and the main air pressure chamber 10, and then the lower shell 1 and the upper shell 2 are locked by the locking bolt 4, so as to improve the connection stability between the lower shell 1 and the upper shell 2 and facilitate disassembly. Example

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 As shown, the high-sealing diaphragm accumulator includes a lower shell 1 and an upper shell 2, a connecting unit arranged between the lower shell 1 and the upper shell 2, and a working unit arranged inside the lower shell 1 and the upper shell 2; The connecting unit includes a liquid inlet and outlet 7 opened in the middle of the bottom end of the lower shell 1, an oil valve body 6 fixedly connected to the bottom end of the liquid inlet and outlet 7, a first inflation valve 3 fixedly connected to one side of the lower shell 1, and a connecting assembly arranged at the bottom end of the upper shell 2; The working unit includes a hydraulic chamber 8 opened at the bottom end of the lower shell 1, a main air pressure chamber 10 arranged at the top of the hydraulic chamber 8, a first backup air pressure chamber 12 and a second backup air pressure chamber 13 opened in the upper shell 2, and partition components respectively arranged between the hydraulic chamber 8 and the main air pressure chamber 10 and between the first backup air pressure chamber 12 and the second backup air pressure chamber 13.

[0028] The connection assembly in the connection unit includes a plurality of through holes 11 opened in the middle of the bottom end of the upper shell 2, an extension block 24 fixedly connected to both sides of the bottom end of the upper shell 2, a second elastic column 26 fixedly connected to the front and rear sides of the extension block 24, a second spring 25 arranged on the surface of the second elastic column 26, a limit block 27 arranged on one side of the extension block 24, a connection block 28 arranged on one side of the limit block 27, and a locking bolt 4 threadedly connected to the inside of the connection block 28; The first standby air pressure chamber 12 and the main air pressure chamber 10 are connected via a through hole 11 .

[0029] The connection unit further includes a second inflation valve 5 fixedly connected to the top end of the upper shell 2, and a sensor arranged on one side of the second inflation valve 5; The bottom end of the second inflation valve 5 is connected to the second standby air pressure chamber 13 .

[0030] The first inflation valve 3 in the connection unit is connected to the main air pressure chamber 10 , and the extension block 24 , the limit block 27 and the connection block 28 all extend to the interior of the lower shell 1 .

[0031] The partition assembly in the working unit includes a double diaphragm 9 arranged between the hydraulic chamber 8 and the main air pressure chamber 10 or between the first backup air pressure chamber 12 and the second backup air pressure chamber 13, two semicircular rings 19 fixedly connected to the side of the double diaphragm 9, a fixed block 18 fixedly connected to the middle of the semicircular ring 19, a vertical hole opened in the fixed block 18, a partition plate 17 fixedly connected to the middle of the vertical hole, a first elastic column 16 fixedly connected to the upper and lower sides of the partition plate 17, a first spring 15 fixedly connected to the surface of the first elastic column 16, and a positioning block 14 fixedly connected to one end of the first elastic column 16.

[0032] The partition assembly in the working unit also includes a flexible bonding block 20 fixedly connected to both ends of the two semicircular rings 19, an adhesive layer 21 fixedly connected to the two flexible bonding blocks 20 on one side, a clamping layer 22 fixedly connected to the two flexible bonding blocks 20 on the other side, and a plurality of triangular blocks 23 fixedly connected to one side of the clamping layer 22; The triangular block 23 extends to the inside of the adhesive layer 21 .

[0033] The lower shell 1 and the upper shell 2 are both made of metal.

[0034] After removing the two locking bolts 4 and disassembling the lower shell 1 and the upper shell 2, pull the double diaphragm 9 inside the lower shell 1 to separate the flexible fitting blocks 20 at the joints of the multiple semicircular rings 19, and then pull out the multiple semicircular rings 19 for replacement. For the double diaphragm 9 inside the upper shell 2, if it is damaged, the entire upper shell 2 needs to be replaced, which improves the convenience of replacing the double diaphragm 9.

[0035] By arranging a double diaphragm 9 in the upper shell 2, the interior of the upper shell 2 is divided into two backup air pressure chambers. When the double diaphragm 9 above the hydraulic chamber 8 fails, it automatically switches to the main air pressure chamber 10 and the first backup air pressure chamber 12 and the second backup air pressure chamber 13, which greatly extends the service life of the accumulator and can ensure the normal operation of the equipment.

[0036] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-sealing diaphragm accumulator, comprising a lower shell (1) and an upper shell (2), characterized in that: It also includes a connecting unit arranged between the lower shell (1) and the upper shell (2), and a working unit arranged inside the lower shell (1) and the upper shell (2); The connection unit comprises a liquid inlet and outlet (7) opened in the middle of the bottom end of the lower shell (1), an oil valve body (6) fixedly connected to the bottom end of the liquid inlet and outlet (7), a first inflation valve (3) fixedly connected to one side of the lower shell (1), and a connection assembly arranged at the bottom end of the upper shell (2); The working unit comprises a hydraulic chamber (8) opened at the bottom end of the lower shell (1), a main air pressure chamber (10) arranged at the top end of the hydraulic chamber (8), a first spare air pressure chamber (12) and a second spare air pressure chamber (13) opened in the upper shell (2), and a partition assembly respectively arranged between the hydraulic chamber (8) and the main air pressure chamber (10) and between the first spare air pressure chamber (12) and the second spare air pressure chamber (13).

2. The high-sealing diaphragm accumulator according to claim 1, characterized in that: The connection assembly in the connection unit comprises a plurality of through holes (11) provided in the middle of the bottom end of the upper shell (2), an extension block (24) fixedly connected to both sides of the bottom end of the upper shell (2), a second elastic column (26) fixedly connected to the front and rear sides of the extension block (24), a second spring (25) arranged on the surface of the second elastic column (26), a limit block (27) arranged on one side of the extension block (24), a connection block (28) arranged on one side of the limit block (27), and a locking bolt (4) threadedly connected to the inside of the connection block (28); The first standby air pressure chamber (12) and the main air pressure chamber (10) are connected via a through hole (11).

3. The high-sealing diaphragm accumulator according to claim 2, characterized in that: The connection unit further comprises a second inflation valve (5) fixedly connected to the top end of the upper shell (2), and a sensor arranged on one side of the second inflation valve (5); The bottom end of the second inflation valve (5) is connected to the second standby air pressure chamber (13).

4. The high-sealing diaphragm accumulator according to claim 3, characterized in that: The first inflation valve (3) in the connection unit is arranged in communication with the main air pressure chamber (10), and the extension block (24), the limit block (27) and the connection block (28) all extend to the interior of the lower shell (1).

5. The high-sealing diaphragm accumulator according to claim 4, characterized in that: The partition assembly in the working unit comprises a double diaphragm (9) arranged between the hydraulic chamber (8) and the main air pressure chamber (10) or between the first standby air pressure chamber (12) and the second standby air pressure chamber (13), two semicircular rings (19) fixedly connected to the side of the double diaphragm (9), a fixed block (18) fixedly connected to the middle of the semicircular ring (19), a vertical hole opened in the fixed block (18), a partition plate (17) fixedly connected to the middle of the vertical hole, a first elastic column (16) fixedly connected to the upper and lower sides of the partition plate (17), a first spring (15) fixedly connected to the surface of the first elastic column (16), and a positioning block (14) fixedly connected to one end of the first elastic column (16).

6. The high-sealing diaphragm accumulator according to claim 5, characterized in that: The partition assembly in the working unit further comprises flexible bonding blocks (20) fixedly connected to the two ends of the two semicircular rings (19), an adhesive layer (21) fixedly connected to the two flexible bonding blocks (20) on one side, a clamping layer (22) fixedly connected to the two flexible bonding blocks (20) on the other side, and a plurality of triangular blocks (23) fixedly connected to one side of the clamping layer (22); The triangular block (23) extends to the interior of the adhesive layer (21).

7. The high-sealing diaphragm accumulator according to claim 6, characterized in that: The lower shell (1) and the upper shell (2) are both made of metal.

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