Hydraulic energy accumulator

Abstract

The utility model discloses a hydraulic accumulator, which belongs to the technical field of AE1 series oxygen filling pump improvement, and comprises a shell, an air bag, a three-way pipe connecting piece and a mechanical hydraulic stamping device, the air bag is arranged in the shell, the air bag is made of soft rubber materials and is convenient to shrink and expand under pressure, the three-way pipe connecting piece is connected with the air bag, and the mechanical hydraulic stamping device is connected with the air bag. The three-way pipe connecting piece is arranged at the upper end of the shell, one end of the three-way pipe connecting piece is connected with the gas source bottle through the gas source pipe, the other end of the three-way pipe connecting piece is connected with the oxygen filling pump through the filling pump pipe, and the gas source pipe and the filling pump pipe are each provided with a valve. The automatic oxygen filling device is simple in structure, convenient and easy to operate and extremely low in cost, in the oxygen operation process, the oxygen utilization rate is increased, the oxygen filling efficiency is improved in the operation process, and oxygen waste is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of improvement of AE1 series oxygen filling pumps, and more specifically to a hydraulic accumulator. Background Art

[0002] AE102A series oxygen filling pump is used to extract oxygen from the gas source bottle and increase the pressure to 20-30MPa, and then fill it into the gas bottle to be filled, so that the oxygen in the gas bottle to be filled reaches the required pressure value. Although this product only takes 14 seconds to pressurize a 2L gas cylinder from a 10MPa gas source bottle to a 20MPa gas cylinder when filling oxygen, the efficiency is higher than the national standard of 50 seconds, but in the daily filling process, when the gas source bottle is lower than 5MP, the extraction efficiency of the oxygen filling pump is reduced, resulting in extended working time (filling time is extended from the original 14 seconds to about 2 minutes), and the working efficiency becomes lower, and when the gas source bottle is lower than 3MP, the oxygen filling pump can no longer extract the remaining oxygen in the gas source bottle, resulting in a waste of oxygen in the gas source bottle.

[0003] Therefore, when the remaining oxygen pressure in the gas source bottle is too low, the oxygenation efficiency will be reduced, the oxygenation time will be prolonged, and even oxygen will be wasted. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art AE102A series oxygen filling pumps, which have the disadvantages of reduced efficiency as the oxygen pressure of the gas source bottle decreases and waste, and provides a hydraulic accumulator to solve the above disadvantages.

[0005] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is:

[0006] The utility model discloses a hydraulic accumulator, comprising a shell, an airbag, a three-way pipe connector and a mechanical hydraulic punching device, wherein the airbag is arranged in the shell, the airbag is made of soft rubber material for easy contraction and expansion under pressure, the three-way pipe connector is connected to the airbag, the three-way pipe connector is arranged at the upper end of the shell, one end of the three-way pipe connector is connected to the air source bottle through the air source pipe, the other end of the three-way pipe connector is connected to the oxygen filling pump through the filling pump pipe, valves are arranged on the air source pipe and the filling pump pipe, the mechanical hydraulic punching device is arranged at the lower end of the shell, and the hydraulic pipe on the mechanical hydraulic punching device is arranged at the lower end inside the shell.

[0007] Preferably, the shell is made of light aluminum alloy, the shell is a tubular structure, hydraulic oil is arranged in the shell, and the hydraulic oil is arranged outside the airbag.

[0008] Preferably, one end of the hydraulic pipe is arranged in the outer shell, and the other end of the hydraulic pipe is connected to the bottom of the mechanical hydraulic stamping device. The upper end of one side of the hydraulic pipe is connected to an upper oil pipe, and the lower end of the other side of the hydraulic pipe is connected to a lower oil pipe. Both the upper oil pipe and the lower oil pipe are connected to a hydraulic pump, and the hydraulic pump is connected to a motor and an oil tank.

[0009] Preferably, a piston rod is connected to the bottom of the hydraulic pipe, a hydraulic cylinder is connected to the outer surface of the piston rod, and the outer diameter of the hydraulic cylinder is the same as the inner diameter of the hydraulic pipe.

[0010] Preferably, the hydraulic pump is driven by a motor to pump out the hydraulic oil in the oil tank through the upper oil pipe and the lower oil pipe, respectively, and enters the upper and lower parts of the hydraulic cylinder. When the pressure of the hydraulic pump connected to the lower oil pipe is greater than the pressure of the hydraulic pump connected to the upper oil pipe, the hydraulic cylinder moves upward and squeezes.

[0011] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0012] The utility model discloses a hydraulic accumulator, which, through the main structures of an air bag, a mechanical hydraulic punching device, an air source pipe and a filling pump pipe and valves are arranged on the air source pipe and the filling pump pipe, realizes changing the pressure in the air bag to reach a normal pressure for the oxygen filling pump to efficiently oxygenate when the pressure of the air source bottle is insufficient. The utility model has a simple structure, is easy and convenient to operate, and has an extremely low cost. During oxygen operation, the oxygen utilization rate is improved, the oxygenation efficiency is improved during operation, and the oxygen waste is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of a hydraulic accumulator of the utility model in one state;

[0014] Figure 2 It is a structural diagram of a hydraulic accumulator of the utility model in another state;

[0015] Figure 3 This is a structural diagram of the mechanical hydraulic punching device of the utility model.

[0016] In the figure: 1. shell; 2. air bag; 3. three-way pipe connector; 4. mechanical hydraulic stamping device; 41. hydraulic pipe; 42. upper oil pipe; 43. lower oil pipe; 44. hydraulic pump; 45. oil tank; 46. piston rod; 47. hydraulic cylinder; 5. air source pipe; 6. air source bottle; 7. filling pump pipe; 8. oxygen filling pump. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0019] Combination Figure 1 and Figure 2 The utility model is a hydraulic accumulator, comprising a shell 1, an airbag 2, a three-way pipe connector 3 and a mechanical hydraulic punching device 4. The airbag 2 is arranged in the shell 1. The airbag 2 is made of soft rubber material to facilitate compression and expansion. When the hydraulic oil pressure outside the airbag 2 is greater than the internal pressure, the airbag 2 will be compressed and contracted, thereby increasing the internal oxygen pressure. The three-way pipe connector 3 is connected to the airbag 2. The three-way pipe connector 3 is arranged at the upper end of the shell 1. The air inlet and outlet at one end of the three-way pipe connector 3 are connected to the air source bottle 6 through the air source pipe 5, and the air inlet and outlet at the other end of the three-way pipe connector 3 are connected to the oxygen filling pump 8 through the filling pump pipe 7. Valves are provided on the air source pipe 5 and the filling pump pipe 7 to facilitate switching the air source pipe 5 and the filling pump pipe 7 for ventilation as needed. The mechanical hydraulic punching device 4 is arranged at the lower end of the shell 1. The hydraulic pipe 41 on the mechanical hydraulic punching device 4 is arranged at the lower end of the shell 1. The hydraulic pipe 41 is used for hydraulic oil introduction.

[0020] The outer shell 1 is made of light aluminum alloy and is a tubular structure. Hydraulic oil is arranged in the outer shell 1 and the hydraulic oil is arranged outside the airbag 2. The oxygen pressure in the airbag 2 is changed by changing the pressure of the hydraulic oil in the outer shell 1 to improve the oxygen filling efficiency of the oxygen filling pump 8.

[0021] Combination Figure 1-Figure 3 One end of the hydraulic pipe 41 is arranged in the outer shell 1, and the other end of the hydraulic pipe 41 is connected to the bottom of the mechanical hydraulic stamping device 4. The upper end of one side of the hydraulic pipe 41 is connected to an upper oil pipe 42, and the lower end of the other side of the hydraulic pipe 41 is connected to a lower oil pipe 43. The upper oil pipe 42 and the lower oil pipe 43 are used to pass hydraulic oil upward and downward respectively. The upper oil pipe 42 and the lower oil pipe 43 are both connected to a hydraulic pump 44, and the hydraulic pump 44 is connected to a motor and an oil tank 45.

[0022] A piston rod 46 is connected to the bottom of the hydraulic tube 41, and a hydraulic cylinder 47 is connected to the outer sleeve of the piston rod 46. The outer diameter of the hydraulic cylinder 47 is the same as the inner diameter of the hydraulic tube 41 to prevent the hydraulic oil from leaking up and down through the gap and affecting the up and down squeezing effect.

[0023] The hydraulic pump 44 is driven by a motor to extract the hydraulic oil in the oil tank 45, and passes the hydraulic oil through the upper oil pipe 42 and the lower oil pipe 43 to the upper and lower parts of the hydraulic cylinder 47 respectively. The hydraulic pump 44 can be set to a constant pressure. When the pressure of the hydraulic pump 44 connected to the lower oil pipe 43 is greater than the pressure of the hydraulic pump 44 connected to the upper oil pipe 42, the hydraulic cylinder 47 moves upward and squeezes.

[0024] Working principle: when the pressure of the gas source bottle 6 is normal, that is, the gas source bottle 6 has sufficient oxygen and the pressure reaches 10MPa, the valve of the gas source pipe 5 is opened to allow the oxygen in the gas source bottle 6 to fully enter the airbag 2 through the gas source pipe 5. The filling of oxygen from the gas source bottle 6 into the airbag 2 causes the pressure to increase, causing the airbag 2 to expand and expand, causing the hydraulic oil in the housing 1 to flow back from the hydraulic pipe 41 to the mechanical hydraulic stamping device 4. The valve of the filling pump pipe 7 is opened to allow the oxygen to pass through the airbag 2 to reach the oxygen filling pump 8. At this time, the pressure of the accumulator is consistent with the pressure of the gas source bottle 6 and the air inlet pressure of the oxygen filling pump 8, all of which are 10MPa, so the filling work can be normal and the efficiency is also normal.

[0025] The pressure of the gas source bottle 6 gradually decreases with the increase of the filling quantity. When the pressure of the gas source bottle 6 is lower than 5MPa, the pressure of the gas source bottle 6 reaching the airbag 2 and the oxygen filling pump 8 is lower than 5MPa, resulting in a decrease in the efficiency of the oxygen filling pump 8. At this time, the valve of the gas source pipe 5 is closed first. The gas pressure in the airbag 2 is 5MPa. The pressure is too low, which affects the extraction efficiency of the oxygen filling pump 8. The mechanical hydraulic punching device 4 is set to a pressure of 10MPa and started. The mechanical hydraulic punching device 4 injects hydraulic oil into the housing 1 through the hydraulic pipe 41 to compress the oxygen in the airbag 2, so that the gas The oxygen pressure in the airbag 2 increases. Since the mechanical hydraulic stamping device 4 sets a constant pressure of 10MPa, the mechanical hydraulic stamping device 4 will continue to work until the hydraulic pressure reaches 10MPa. At this time, affected by the hydraulic pressure, the pressure of the airbag 2 is also 10MPa, which can stably supply the oxygen filling pump 8 to fill oxygen. When the pressure of the airbag 2 is sufficient to fill the oxygen cylinder to be filled, the mechanical hydraulic stamping device 4 is closed, and the valve of the gas source pipe 5 is opened to press the oxygen in the gas source bottle 6 into the airbag 2, and then repeat the above operation under normal pressure. When the pressure of the gas source bottle 6 is lower than 3MPa, the same operation can be performed.

[0026] To sum up: the hydraulic accumulator of the utility model, through the main structures of the air bag 2, the mechanical hydraulic punching device 4, the air source pipe 5 and the filling pump pipe 7, and the valves are arranged on the air source pipe 5 and the filling pump pipe 7, it is possible to change the pressure in the air bag 2 when the pressure of the air source bottle 6 is insufficient to reach the normal pressure for the oxygen filling pump 8 to efficiently oxygenate. The utility model has a simple structure, is easy to operate, and has extremely low cost. During oxygen operation, the oxygen utilization rate is improved, the oxygenation efficiency is improved during operation, and the oxygen waste is reduced.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although the 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 hydraulic accumulator, characterized in that: The invention comprises a shell (1), an air bag (2), a three-way pipe connector (3) and a mechanical hydraulic punching device (4), wherein the air bag (2) is arranged in the shell (1), the air bag (2) is made of soft rubber material to facilitate contraction and expansion under pressure, the three-way pipe connector (3) is connected to the air bag (2), the three-way pipe connector (3) is arranged at the upper end of the shell (1), one end of the three-way pipe connector (3) is connected to the air source bottle (6) through the air source pipe (5), and the other end of the three-way pipe connector (3) is connected to the oxygen filling pump (8) through the filling pump pipe (7), valves are arranged on the air source pipe (5) and the filling pump pipe (7), the mechanical hydraulic punching device (4) is arranged at the lower end of the shell (1), and the hydraulic pipe (41) on the mechanical hydraulic punching device (4) is arranged at the lower end of the shell (1).

2. A hydraulic accumulator according to claim 1, characterized in that: The shell (1) is made of a light aluminum alloy material and is a tubular structure. Hydraulic oil is arranged in the shell (1), and the hydraulic oil is arranged outside the airbag (2).

3. A hydraulic accumulator according to claim 1, characterized in that: One end of the hydraulic pipe (41) is arranged in the housing (1), and the other end of the hydraulic pipe (41) is connected to the bottom of the mechanical hydraulic punching device (4); the upper end of one side of the hydraulic pipe (41) is connected to an upper oil pipe (42), and the lower end of the other side of the hydraulic pipe (41) is connected to a lower oil pipe (43); both the upper oil pipe (42) and the lower oil pipe (43) are connected to a hydraulic pump (44), and the hydraulic pump (44) is connected to a motor and an oil tank (45).

4. A hydraulic accumulator according to claim 3, characterized in that: The bottom of the hydraulic pipe (41) is connected to a piston rod (46), and the outer shell of the piston rod (46) is connected to a hydraulic cylinder (47). The outer diameter of the hydraulic cylinder (47) is the same as the inner diameter of the hydraulic pipe (41).

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