A piston type hydraulic accumulator disassembling device

Abstract

The utility model relates to a piston type hydraulic energy accumulator disassembling device. Including left clamping jaw, right clamping jaw, left end ball screw structure, right end ball screw structure, left end clamping clamp, right end clamping clamp, fixed platform frame, left end clamping clamp, right end clamping clamp set up in fixed platform frame, left end ball screw structure, right end ball screw structure are fixed respectively in the left and right two ends of fixed platform frame, the screw of left end ball screw structure is connected with left clamping jaw near one end of piston type hydraulic energy accumulator to be disassembled, the screw of right end ball screw structure is connected with right clamping jaw near one end of piston type hydraulic energy accumulator to be disassembled. The efficiency is improved significantly when piston type hydraulic energy accumulator disassembles.

Description

Technical Field

[0001] This utility model belongs to the technical field of aviation hydraulic accumulators, specifically relating to a disassembly device for a piston-type hydraulic accumulator. Background Technology

[0002] After acceptance testing, piston-type hydraulic accumulators typically require disassembly and inspection of their internal components. This inspection is a crucial step after performance testing, often necessitating multiple disassembly and reassembly processes during commissioning. Traditional piston-type hydraulic accumulator disassembly is complex, tedious, and inefficient, typically employing a pneumatic blow-out method. However, even slight carelessness during disassembly can lead to internal parts flying out or breaking, causing injury. Without specialized tooling and fixtures, ensuring safety during piston-type accumulator disassembly is extremely difficult. Utility Model Content

[0003] The purpose of this invention is to solve the problems existing in the prior art and to propose a piston-type hydraulic energy storage dismantling device.

[0004] The technical solution of this utility model is as follows: To achieve the above-mentioned utility model objective, a piston-type hydraulic accumulator disassembly device is proposed. The piston-type hydraulic accumulator contains an isolation oil-gas chamber piston 9. The disassembly device includes a left chuck 17, a right chuck 13, a left handwheel 19, a right handwheel 16, a left-end ball screw structure 18, a right-end ball screw structure 14, a left-end clamping clamp 3, a right-end clamping clamp 10, and a fixed frame 15. The left-end clamping clamp 3 and the right-end clamping clamp 10 are mounted on the fixed frame 15. For clamping and fixing piston-type hydraulic accumulators, the left-end ball screw structure 18 and the right-end ball screw structure 14 are respectively fixed to the left and right ends of the fixing frame 15. The left end ball screw structure 18 is connected to the left chuck 17 at one end near the piston-type hydraulic accumulator to be disassembled, and the other end is connected to the left handwheel 19. The right end ball screw structure 14 is connected to the right chuck 13 at one end near the piston-type hydraulic accumulator to be disassembled, and the other end is connected to the right handwheel 16.

[0005] In one possible embodiment, the piston 9 of the isolated oil-gas chamber is made of hard anodized aluminum alloy.

[0006] In one possible embodiment, the left chuck 17 is made of aluminum alloy.

[0007] In one possible embodiment, the right claw 13 is made of aluminum alloy.

[0008] In one possible embodiment, the left-end clamping clamp 3 is made of corrosion-resistant stainless steel.

[0009] In one possible embodiment, the right-end clamping clamp 10 is made of corrosion-resistant stainless steel.

[0010] The principle of this utility model is as follows: Traditional disassembly of piston-type hydraulic accumulators involves blowing them out with a regular air gun. This process often suffers from unstable gas pressure or parts flying out suddenly, potentially causing injury from internal piston splatter. Furthermore, traditional disassembly methods are difficult to use, including securing the product firmly, providing overpressure protection for the hydraulic and nitrogen chambers, and axially positioning internal parts. This results in low efficiency and typically requires multiple people. This invention addresses these issues by incorporating overload protection components for both the nitrogen and hydraulic chambers within the piston-type hydraulic accumulator, ensuring safety during disassembly. The hydraulic oil chamber and nitrogen chamber are designed to provide sufficient safety protection, preventing accidental overpressure during disassembly that could lead to excessive pressure in the hydraulic oil chamber and nitrogen chamber, causing overpressure deformation of the piston-type hydraulic accumulator housing. During product disassembly, the left and right jaws of the piston-type hydraulic accumulator disassembly device provide good support, protection, and positioning for the piston assembly in the isolation oil-gas chamber within the piston-type hydraulic accumulator. This prevents parts from flying out and injuring people under the pressure of hydraulic oil and nitrogen during disassembly. This invention solves the problems of inconvenience and poor operability in product disassembly, significantly improves the disassembly efficiency of piston-type hydraulic accumulators, and effectively increases the safety of the product disassembly process.

[0011] The working principle of the piston-type hydraulic accumulator dismantling device is as follows: The hydraulic oil chamber connector is connected to the hydraulic oil chamber of the piston-type accumulator. When hydraulic oil is supplied to the product via a hydraulic oil source, the right jaw of the piston-type hydraulic accumulator dismantling device effectively fixes the piston in the isolation oil-gas chamber. The rotation of the left handwheel of the piston-type hydraulic accumulator dismantling device, in conjunction with the operation of the ball screw structure at the left end of the device, is converted into linear motion of the piston in the isolation oil-gas chamber. When hydraulic oil is supplied to the product via a nitrogen gas source, the right jaw of the piston-type hydraulic accumulator dismantling device effectively fixes the piston in the isolation oil-gas chamber. The rotation of the right handwheel of the piston-type hydraulic accumulator dismantling device, in conjunction with the operation of the ball screw structure at the right end of the device, is converted into linear motion of the piston in the isolation oil-gas chamber.

[0012] The advantages of this utility model are: 1. The piston-type hydraulic energy storage device is safely, reliably, and effectively secured during disassembly.

[0013] 2. The efficiency of disassembling the piston-type hydraulic energy storage device is significantly improved.

[0014] 3. The piston-type hydraulic accumulator has a long service life during disassembly, and the left and right disassembly claws at both ends can effectively fix the axial movement of the piston in the isolated oil and gas chamber.

[0015] 4. The handwheel of the piston-type hydraulic accumulator disassembly device, in conjunction with the ball screw structure, can effectively control the linear movement of the piston in the isolated oil-gas chamber.

[0016] 5. The piston-type hydraulic accumulator dismantling device can ensure the smooth axial movement of the piston in the isolated oil-gas chamber during the dismantling process by flexibly controlling the hydraulic pressure and nitrogen pressure. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a piston-type hydraulic accumulator disassembly device according to a preferred embodiment of the present invention. Figure 2 This is a schematic diagram of a traditional piston-type hydraulic accumulator disassembly device. Figure 3 This is a schematic diagram illustrating the working principle of a preferred embodiment of the present invention.

[0018] In the diagram: 1- Piston-type hydraulic accumulator hydraulic oil chamber pipe connector; 2- Hydraulic oil chamber overload protection component; 3- Piston-type hydraulic accumulator left end clamping clamp; 4- Piston-type hydraulic accumulator housing; 5- First isolation oil-gas chamber piston support ring; 6- First isolation oil-gas chamber piston combination seal; 7- Second isolation oil-gas chamber piston combination seal; 8- Second isolation oil-gas chamber piston support ring; 9- Isolation oil-gas chamber piston; 10- Piston-type hydraulic accumulator right end clamping clamp; 11- Piston-type hydraulic accumulator nitrogen chamber pipe connector; 12- Nitrogen chamber overload protection component; 13- Piston-type hydraulic accumulator disassembly device right jaw; 14- Piston-type hydraulic accumulator disassembly device right end ball screw structure; 15- Piston-type hydraulic accumulator disassembly device fixing frame. ; 16-Right handwheel of piston-type hydraulic accumulator disassembly device; 17-Left chuck of piston-type hydraulic accumulator disassembly device; 18-Left end ball screw structure of piston-type hydraulic accumulator disassembly device; 19-Left handwheel of piston-type hydraulic accumulator disassembly device; 20-Accumulator oil chamber; 21-First pipe joint; 22-Piston; 23-First support ring; 24-First combined sealing ring; 25-Second support ring; 26-Second combined sealing ring; 27-Housing; 28-Second pipe joint; 29-First disassembly and installation fixture; 30-Second disassembly and installation fixture; 31-Left side hydraulic oil tank; 32-Left side constant pressure variable pump; 33-Left side hydraulic solenoid valve; 34-Right side hydraulic solenoid valve; 35-Right side constant pressure variable pump; 36-Right side hydraulic oil tank. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] The features and illustrative embodiments of various aspects of this utility model will now be described in detail. In the following detailed description, numerous specific details are set forth in order to provide a comprehensive understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this utility model by illustrating examples of it. This utility model is by no means limited to any specific arrangements and methods set forth below, but covers any improvements, substitutions, and modifications to the structure, method, and apparatus without departing from the spirit of this utility model. In the accompanying drawings and the following description, well-known structures and techniques are not shown to avoid unnecessarily obscuring this utility model.

[0021] like Figure 1 As shown, the piston-type hydraulic accumulator includes a first pipe joint for the hydraulic oil chamber of the piston-type hydraulic accumulator, a hydraulic oil chamber overload protection component 2, a piston-type hydraulic accumulator housing 4, a piston support ring for the first isolation oil-gas chamber 5, a piston combination seal for the first isolation oil-gas chamber 6, a piston combination seal for the second isolation oil-gas chamber 7, a piston support ring for the second isolation oil-gas chamber 8, an isolation oil-gas chamber piston 9, a first pipe joint for the nitrogen chamber of the piston-type hydraulic accumulator 1, and a nitrogen chamber overload protection component 12.

[0022] A piston-type hydraulic accumulator disassembly device is provided. The piston-type hydraulic accumulator has an isolation oil-gas chamber piston 9 inside. The disassembly device includes a left chuck 17, a right chuck 13, a left handwheel 19, a right handwheel 16, a left-end ball screw structure 18, a right-end ball screw structure 14, a left-end clamping clamp 3 for the piston-type hydraulic accumulator, a right-end clamping clamp 10 for the piston-type hydraulic accumulator, and a fixed platform 15.

[0023] The isolating oil-gas chamber piston 9 is located inside the piston-type hydraulic accumulator housing 4, the hydraulic oil chamber overload protection component 2 is located inside the first pipe joint of the hydraulic oil chamber of the piston-type hydraulic accumulator, and the nitrogen chamber overload protection component 12 is located inside the first pipe joint 1 of the nitrogen chamber of the piston-type hydraulic accumulator.

[0024] Before disassembling the piston-type hydraulic accumulator, the gas in the nitrogen chamber is released to reduce the gas pressure. The piston-type hydraulic accumulator is then mounted on the piston-type hydraulic accumulator disassembly device mounting frame 15 and secured by the left-end clamp 3 and the right-end clamp 10 of the piston-type hydraulic accumulator.

[0025] When a hydraulic oil source is used as the disassembly power source, hydraulic oil is injected into the hydraulic accumulator through the first pipe joint of the hydraulic oil chamber of the piston-type hydraulic accumulator. The right claw 13 of the piston-type hydraulic accumulator disassembly device presses against the right end face of the piston 9 in the isolation oil-gas chamber. When the hydraulic oil is continuously pressurized, the piston 9 in the isolation oil-gas chamber moves slowly from left to right under the action of hydraulic oil pressure. During the movement, the right ball screw structure 14 at the right end of the piston-type hydraulic accumulator disassembly device is controlled to move to the right by the right wheel 16 of the piston-type hydraulic accumulator disassembly device. During the movement, the hydraulic oil pressure is controlled within a certain value to avoid the piston 9 in the isolation oil-gas chamber being ejected instantly due to excessively high instantaneous oil pressure.

[0026] When nitrogen is used as the dismantling power source, nitrogen is introduced into the hydraulic accumulator through the nitrogen chamber pipe joint of the piston-type hydraulic accumulator. The left claw 17 of the piston-type hydraulic accumulator dismantling device is pressed against the left end face of the piston 9 in the isolation oil-gas chamber. When the nitrogen source is continuously pressurized, the piston 9 in the isolation oil-gas chamber moves slowly from right to left under the action of nitrogen pressure. During the movement, the left handwheel 19 of the piston-type hydraulic accumulator dismantling device controls the left end ball screw structure 18 of the piston-type hydraulic accumulator dismantling device to move to the left. During the movement, the nitrogen pressure is controlled within a certain value to avoid the instantaneous nitrogen pressure being too high, which would cause the piston 9 in the isolation oil-gas chamber to be ejected instantly.

[0027] During the disassembly of piston-type accumulators, the use of the disassembly device's jaws, ball screw structure, and handwheel ensures a safe, efficient, and reliable process, preventing parts from flying and causing injury due to excessive oil or air pressure. The disassembly fixture also ensures a convenient and reliable disassembly process, facilitating multiple batch operations by assembly personnel.

[0028] Furthermore, the piston-type hydraulic accumulator disassembly device is a ball screw-type disassembly device with a handwheel.

[0029] Furthermore, the piston 9 of the isolated oil-gas chamber is made of aluminum alloy that has undergone hard anodizing treatment.

[0030] Furthermore, the piston-type hydraulic accumulator housing 4 is made of high-strength corrosion-resistant stainless steel.

[0031] Furthermore, the first isolation oil-gas chamber piston assembly seal 6 is made of polytetrafluoroethylene (PTFE) and fiber-reinforced composite material, the second isolation oil-gas chamber piston assembly seal 7 is made of PTFE and fiber-reinforced composite material, the first isolation oil-gas chamber piston support ring 5 is made of PTFE, and the second isolation oil-gas chamber piston support ring 8 is made of PTFE.

[0032] Furthermore, the first pipe joint 1 of the nitrogen chamber of the piston-type hydraulic accumulator is made of corrosion-resistant stainless steel.

[0033] Furthermore, the first pipe joint of the hydraulic oil chamber of the piston-type hydraulic accumulator is made of corrosion-resistant stainless steel.

[0034] Furthermore, the left claw 17 of the piston-type hydraulic accumulator dismantling device is made of aluminum alloy.

[0035] Furthermore, the right claw 13 of the piston-type hydraulic accumulator dismantling device is made of aluminum alloy.

[0036] Furthermore, the ball screw structure 18 at the left end of the piston-type hydraulic accumulator dismantling device is made of corrosion-resistant stainless steel.

[0037] Furthermore, the ball screw structure 14 at the right end of the piston-type hydraulic accumulator dismantling device is made of corrosion-resistant stainless steel.

[0038] Furthermore, the ball screw structure 14 at the right end of the piston-type hydraulic accumulator dismantling device is made of corrosion-resistant stainless steel.

[0039] Furthermore, the clamp 3 on the left end of the piston-type hydraulic accumulator is made of corrosion-resistant stainless steel.

[0040] Furthermore, the clamp 10 on the right end of the piston-type hydraulic accumulator is made of corrosion-resistant stainless steel.

[0041] Furthermore, the left handwheel 19 of the piston-type hydraulic accumulator dismantling device is made of corrosion-resistant stainless steel.

[0042] Furthermore, the right-hand wheel 16 of the piston-type hydraulic accumulator dismantling device is made of corrosion-resistant stainless steel.

[0043] Furthermore, the fixing frame 15 of the piston-type hydraulic accumulator dismantling device is made of hard aluminum alloy with an anodized surface.

[0044] Furthermore, the ball screw structure 18 at the left end of the piston-type hydraulic accumulator dismantling device can convert the rotational motion of the left handwheel 19 of the piston-type hydraulic accumulator dismantling device into the linear motion of the left chuck 17 of the piston-type hydraulic accumulator dismantling device.

[0045] Furthermore, the ball screw structure 14 at the right end of the piston-type hydraulic accumulator dismantling device can convert the rotational motion of the right hand wheel 16 of the piston-type hydraulic accumulator dismantling device into the linear motion of the right chuck 13 of the piston-type hydraulic accumulator dismantling device.

[0046] Furthermore, the first pipe joint of the hydraulic oil chamber of the piston-type hydraulic accumulator is fixedly connected to the piston-type hydraulic accumulator housing 4 by a threaded connection to prevent loosening.

[0047] Furthermore, the first pipe joint 1 of the nitrogen chamber of the piston-type hydraulic accumulator is fixedly connected to the piston-type hydraulic accumulator housing 4 by a threaded connection to prevent loosening.

[0048] Furthermore, the piston 9 in the isolated oil-gas chamber can reciprocate flexibly inside the piston accumulator under the action of hydraulic oil pressure.

[0049] Furthermore, the left jaw 17 of the piston-type hydraulic accumulator disassembly device is fixedly connected to the left-end ball screw structure 18 of the piston-type hydraulic accumulator disassembly device via a threaded connection, and the right jaw 13 of the piston-type hydraulic accumulator disassembly device is fixedly connected to the right-end ball screw structure 14 of the piston-type hydraulic accumulator disassembly device via a threaded connection. The left jaw 17 of the piston-type hydraulic accumulator disassembly device can move flexibly left and right under the action of the left handwheel 19 of the piston-type hydraulic accumulator disassembly device.

[0050] Furthermore, the piston-type hydraulic accumulator housing 4 is an internally hollow thin-walled cylindrical structure.

[0051] Furthermore, the piston 9 of the isolated oil and gas chamber is a solid structure with hemispherical protrusions at both ends.

[0052] Furthermore, the hydraulic oil pressure in the hydraulic oil chamber of the piston 9 in the isolation oil-gas chamber and the nitrogen gas pressure in the nitrogen chamber have the same area of ​​action.

[0053] Furthermore, the first isolation oil-gas chamber piston assembly seal 6, the second isolation oil-gas chamber piston assembly seal 7, the first isolation oil-gas chamber piston support ring 5, and the second isolation oil-gas chamber piston support ring 8 are placed in the four annular rectangular grooves of the isolation oil-gas chamber piston 9.

[0054] Furthermore, before disassembly, the hydraulic oil in the hydraulic chamber and the nitrogen in the nitrogen chamber need to be released.

[0055] Furthermore, the nitrogen chamber of the piston-type hydraulic accumulator is connected to a nitrogen source during disassembly.

[0056] Furthermore, the hydraulic oil chamber of the piston-type hydraulic accumulator is connected to the hydraulic oil source during disassembly.

[0057] Its specific working mechanism is as follows: When in use, the piston-type hydraulic accumulator dismantling device uses an oil source for dismantling: a certain pressure of hydraulic oil is introduced into the hydraulic oil chamber of the piston-type accumulator. The hydraulic oil pressure pushes the piston 9 of the isolation oil-gas chamber towards the nitrogen chamber. The right wheel 16 of the piston-type hydraulic accumulator dismantling device rotates, and the ball screw structure 14 at the right end of the piston-type hydraulic accumulator dismantling device converts the rotational motion of the right wheel 16 of the piston-type hydraulic accumulator dismantling device into the linear motion of the right chuck 13 of the piston-type hydraulic accumulator dismantling device. The right chuck 13 of the piston-type hydraulic accumulator dismantling device holds the piston 9 of the isolation oil-gas chamber in place, preventing the piston 9 of the isolation oil-gas chamber from splashing and injuring people during the pressurization process.

[0058] When in use, when the piston-type hydraulic accumulator dismantling device uses a gas source for dismantling: nitrogen gas at a certain pressure is introduced into the nitrogen chamber of the piston-type accumulator. The nitrogen gas pressure pushes the piston 9 of the isolation oil-gas chamber towards the hydraulic oil chamber. The left handwheel 19 of the piston-type hydraulic accumulator dismantling device rotates. The left ball screw structure 14 of the piston-type hydraulic accumulator dismantling device converts the rotational motion of the left handwheel 19 of the piston-type hydraulic accumulator dismantling device into the linear motion of the left chuck 17 of the piston-type hydraulic accumulator dismantling device. The left chuck 17 of the piston-type hydraulic accumulator dismantling device holds the piston 9 of the isolation oil-gas chamber in place, preventing the piston 9 of the isolation oil-gas chamber from splashing and injuring people during the pressurization process.

[0059] In actual use, The high-pressure hydraulic oil pressure of the left constant-pressure variable pump 32 is: P s左 ; The high-pressure hydraulic oil pressure of the constant-pressure variable pump 35 on the right side is: P s右 ; When in use, if the air source pressure is used as the disassembly source, the piston 9 in the isolated oil-gas chamber is subjected to the gas pressure on the left side. P t1 The area of ​​the piston 9 in the isolated oil-gas chamber that bears the pressure of the gas on the left side is... A t1 The frictional force experienced by piston 9 in the isolated oil-gas chamber during operation is as follows: F 阻力1 During the disassembly process using air source pressure, the driving force experienced by piston 9 in the isolation oil-gas chamber is... F 气源驱动 for: F 气源驱动 = P t1 ·A t1 - F 阻力1 (1) In use, when using hydraulic pressure as the disassembly source, the piston 9 in the isolated oil-gas chamber bears the hydraulic oil pressure on the right side. P t2 The area of ​​the piston 9 in the isolation oil-gas chamber that bears the hydraulic oil pressure on the right side is... A t2 The frictional force experienced by piston 9 in the isolated oil-gas chamber during operation is as follows: F 阻力2 During the disassembly process using air source pressure, the driving force experienced by piston 9 in the isolation oil-gas chamber is... F 油源驱动 for: F 油源驱动 = P t2 ·A t2 - F 阻力2 (2) The above description of the embodiments is intended to enable those skilled in the art of hydraulic systems to better understand and apply this invention. Those highly skilled in the field of hydraulic system technology can easily present these embodiments in other similar ways and apply the general principles described herein to other embodiments without creative effort. Therefore, this invention is not limited to the embodiments described above. Any similar improvements and modifications made to this invention by those skilled in the art based on its disclosure should be within the protection scope of this invention.

Claims

1. A dismantling device for a piston-type hydraulic accumulator, wherein a piston (9) is provided in the cavity of the piston-type hydraulic accumulator to isolate the oil and gas chamber, characterized in that, The disassembly device includes a left chuck (17), a right chuck (13), a left handwheel (19), a right handwheel (16), a left-end ball screw structure (18), a right-end ball screw structure (14), a left-end clamping clamp (3), a right-end clamping clamp (10), and a fixed frame (15); the left-end clamping clamp (3) and the right-end clamping clamp (10) are mounted on the fixed frame (15) for clamping and fixing the piston-type hydraulic accumulator; the left-end ball screw structure (18) The right end ball screw structure (14) is fixed to the left and right ends of the fixed frame (15). The left end ball screw structure (18) is connected to the left chuck (17) at one end near the piston-type hydraulic accumulator to be disassembled, and the other end is connected to the left handwheel (19). The right end ball screw structure (14) is connected to the right chuck (13) at one end near the piston-type hydraulic accumulator to be disassembled, and the other end is connected to the right handwheel (16).

2. The piston-type hydraulic accumulator dismantling device according to claim 1, characterized in that, The piston (9) of the isolated oil and gas chamber is made of aluminum alloy that has undergone hard anodizing treatment.

3. The piston-type hydraulic accumulator dismantling device according to claim 1, characterized in that, The left claw (17) is made of aluminum alloy.

4. The piston-type hydraulic accumulator dismantling device according to claim 1, characterized in that, The right claw (13) is made of aluminum alloy.

5. The piston-type hydraulic accumulator dismantling device according to claim 1, characterized in that, The left-end clamp (3) is made of corrosion-resistant stainless steel.

6. The piston-type hydraulic accumulator dismantling device according to claim 1, characterized in that, The right-end clamp (10) is made of corrosion-resistant stainless steel.

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