Energy accumulator system having automatic cleaning function

Abstract

An energy accumulator system having an automatic cleaning function, comprising a shell (4). An upper end cover (3) and a lower end cover (7) are installed at the top and the bottom of the shell, respectively; a piston (5) is slidably connected into the shell; the piston is located between the upper end cover and the lower end cover; the piston divides the interior of the shell into a gas chamber (21) and a liquid chamber (20); cleaning assemblies (11) are symmetrically provided on the side of the piston close to the liquid chamber; the upper end cover is provided with a gas hole; the lower end cover is provided with a liquid through hole (10); a hydraulic circuit is formed in the liquid chamber. The piston moves back and forth in the shell along the inner wall of the shell and divides the shell into a gas chamber for storing high-pressure gas and a liquid chamber for storing pure water, the cleaning assemblies are used for cleaning rust spots on the inner wall caused by pure water and particles attached to the inner wall, and the cleaning assemblies are arranged at the position of the piston close to the liquid chamber, and come into contact with the inner wall of the shell during working and are located in the piston when not working. According to the system, particles on the inner wall of the energy accumulator can be automatically cleaned, thereby increasing the service life of the energy accumulator.

Description

An accumulator system with automatic cleaning function Technical Field

[0001] The present invention belongs to the technical field of accumulators and hydraulic systems thereof, and in particular relates to an accumulator system with an automatic cleaning function. Background Art

[0002] An accumulator is an energy storage device in hydraulic and pneumatic systems. It converts system energy into compression energy or potential energy at the appropriate time and stores it. When needed, it converts the compression energy or potential energy into hydraulic or pneumatic pressure and releases it to replenish the system. When the system experiences a sudden increase in pressure, the accumulator absorbs this energy to maintain normal system pressure.

[0003] However, during operation, accumulator systems using pure water as the working medium are more susceptible to rusting due to the presence of trace amounts of gases such as oxygen and carbon dioxide. These gases can undergo oxidation and acid-base reactions, making them more susceptible to rusting than accumulator systems using hydraulic oil as the working medium. Furthermore, the working environment underground in coal mines is harsh, and hydraulic supports are exposed to constant humidity. The air underground contains large amounts of coal dust and trace amounts of water-soluble and highly corrosive acidic gases such as SO2 and H2S. Furthermore, the corrosion resistance of the pure water used as the working medium of the supports deteriorates after repeated recycling. This can cause rust and wear on the accumulator's inner walls, leading to wear of the seals and internal leakage, resulting in insufficient pressure and a safety hazard. This can significantly reduce work efficiency and, if contaminants accumulate to a certain level, can even lead to failure of the entire accumulator system. Furthermore, manual rust removal requires limited space, making it difficult to control the force and depth, making tools awkward to operate and leaving blind spots. Furthermore, grinding is inefficient and labor-intensive.

[0004] Therefore, there is an urgent need for an accumulator system with automatic cleaning function to solve the above problems.

[0005] Summary of the Invention

[0006] The purpose of the present invention is to provide an accumulator system with an automatic cleaning function to solve the problems existing in the above-mentioned prior art.

[0007] To achieve the above-mentioned purpose, the present invention provides the following solution: The present invention provides an accumulator system with an automatic cleaning function, comprising a shell, wherein the top and bottom surfaces of the shell are respectively installed with an upper end cover and a lower end cover, a piston is slidably connected in the shell, and the piston is located between the upper end cover and the lower end cover, and the piston divides the shell into a gas chamber and a liquid chamber, and a cleaning component is symmetrically provided on the side of the piston close to the liquid chamber, an air vent is provided on the upper end cover, and a liquid hole is provided on the lower end cover, and a hydraulic circuit is formed in the liquid chamber.

[0008] Preferably, the cleaning assembly is two sets of annular scrapers with different blade thicknesses, which are circumferentially arranged in the piston.

[0009] Preferably, a plurality of L-shaped liquid holes are provided at equal intervals around the bottom surface of the piston, an annular liquid hole is provided on the side of the cleaning component close to the inside of the piston, a plurality of switch valve ports are provided on the side of the piston close to the liquid chamber, the switch valve ports are connected to the annular liquid hole, and a switch control valve is provided between the L-shaped liquid hole and the cleaning component.

[0010] Preferably, a filter assembly is provided at one end of the L-shaped liquid through hole, and the filter assembly is connected to the liquid cavity. The other end of the L-shaped liquid through hole is located between the piston and the inner wall of the shell and is provided with a liquid storage cavity.

[0011] Preferably, the center of the cleaning component is set as a filter.

[0012] Preferably, a plurality of piston seals are provided between the piston and the housing.

[0013] Preferably, an upper end cover protection member is provided between the upper end cover and the shell, a lower end cover protection member is provided between the lower end cover and the shell, and end cover sealing members are respectively provided between the upper end cover and the shell and between the lower end cover and the shell.

[0014] Preferably, the vent hole is connected to an air valve.

[0015] Preferably, a pressure sensor and a pressure regulating device are provided in the hydraulic circuit, and the pressure sensor is electrically connected to the pressure regulating device.

[0016] Preferably, a one-way speed regulating valve and a cleanliness detection device are further provided in the hydraulic circuit, and the one-way speed regulating valve and the cleanliness detection device are electrically connected.

[0017] The present invention discloses the following technical effects: the piston reciprocates along the inner wall of the shell in the shell, and the shell is divided into a gas chamber for storing high-pressure gas and a liquid chamber for storing pure water. The cleaning component is used to clean rust spots on the inner wall caused by pure water and particulate matter attached to the inner wall. The cleaning component is arranged at the piston in the liquid chamber, contacts the inner wall of the shell when working, and is in the piston when not working; the present invention can automatically clean particulate matter on the inner wall of the accumulator, thereby increasing the service life of the accumulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of this application. The exemplary embodiments and descriptions of this application are intended to explain this application and do not constitute an improper limitation on this application. In the accompanying drawings:

[0019] FIG1 is a schematic diagram of the internal structure of a housing of the present invention;

[0020] FIG2 is a schematic structural diagram of a piston according to the present invention;

[0021] FIG3 is a schematic structural diagram of the hydraulic circuit of the present invention.

[0022] In the figure: 1. air valve; 2. upper end cover protection; 3. upper end cover; 4. housing; 5. piston; 6. piston seal; 7. lower end cover; 8. end cover seal; 9. lower end cover protection; 10. liquid through hole; 11. cleaning component; 12. filter component; 13. liquid storage chamber; 14. switch control valve; 15. L-shaped liquid through hole; 16. one-way speed regulating valve; 17. cleanliness detection device; 18. pressure sensor; 19. pressure regulating device; 20. liquid chamber; 21. gas chamber. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments 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 making creative efforts are within the scope of protection of the present invention.

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] 1 to 3 , the present invention provides an accumulator system with an automatic cleaning function, comprising a housing 4, with an upper end cover 3 and a lower end cover 7 mounted on the top and bottom surfaces thereof, respectively. A piston 5 is slidably connected within the housing 4, the piston 5 being located between the upper end cover 3 and the lower end cover 7. The piston 5 divides the interior of the housing 4 into a gas chamber 21 and a liquid chamber 20. A cleaning assembly 11 is symmetrically provided on one side of the piston 5 close to the liquid chamber 20. A vent is provided on the upper end cover 3, and a liquid through hole 10 is provided on the lower end cover 7. A hydraulic circuit is formed in the liquid chamber 20.

[0026] The piston 5 reciprocates within the housing 4 along the inner wall of the housing 4, dividing the housing 4 into a gas chamber 21 for storing high-pressure gas and a liquid chamber 20 for storing pure water. The cleaning component 11 is used to clean rust spots on the inner wall caused by pure water and particulate matter attached to the inner wall. The cleaning component 11 is arranged at the piston 5 in the liquid chamber 20. When working, it contacts the inner wall of the housing 4. When not working, it is located in the piston 5. The present invention can automatically clean particulate matter on the inner wall of the accumulator, thereby increasing the service life of the accumulator.

[0027] According to a further optimized solution, the cleaning assembly 11 is composed of two sets of annular scrapers with different blade thicknesses, which are circumferentially arranged in the piston 5.

[0028] It is used to remove rust spots on the inner wall of the housing 4 caused by liquid corrosion and debris particles stuck to the inner wall during operation. The cleaning assembly 11 includes two groups. When it is working, it is in close contact with the inner wall of the housing 4; when it is not working, it is located inside the piston 5.

[0029] To further optimize the solution, a plurality of L-shaped liquid holes 15 are provided at equal intervals around the bottom surface of the piston 5, an annular liquid hole is provided on the side of the cleaning component 11 close to the inside of the piston 5, and a plurality of groups of switch valve ports are provided on the side of the piston 5 close to the liquid chamber 20. The switch valve ports are connected to the annular liquid hole, and a switch control valve 14 is provided between the L-shaped liquid hole 15 and the cleaning component 11.

[0030] The switch control valve 14 is used to remotely receive signals and control the switching of different cleaning components 11.

[0031] According to a further optimized solution, a filter assembly 12 is provided at one end of the L-shaped liquid hole 15, and the filter assembly 12 is connected to the liquid chamber 20. The other end of the L-shaped liquid hole 15 is located between the piston 5 and the inner wall of the shell 4 and is provided with a liquid storage chamber 13.

[0032] The filter assembly 12 is used to filter debris and store the filtered liquid. The forward and backward movement of the piston 5 brings the cleaning assembly 11 to the inner wall of the shell 4 and scrapes and cleans the inner wall. At the same time, the liquid also flows through the L-shaped liquid hole 15 to the filter assembly 12 for filtration and storage, thereby achieving a self-cleaning effect.

[0033] To further optimize the solution, the center of the cleaning component 11 is set as a filter.

[0034] To further optimize the solution, multiple piston seals 6 are provided between the piston 5 and the housing 4.

[0035] To further optimize the solution, an upper end cover protection part 2 is provided between the upper end cover 3 and the shell 4, a lower end cover protection part 9 is provided between the lower end cover 7 and the shell 4, and end cover sealing parts 8 are provided between the upper end cover 3 and the shell 4 and between the lower end cover 7 and the shell 4 respectively.

[0036] The piston seal 6 is used to prevent gas and liquid leakage; an upper end cover protection member 2 and a lower end cover protection member 9 are respectively provided between the upper end cover 3 and the lower end cover 7 and the housing 4 to protect the accumulator end cover from physical damage.

[0037] To further optimize the solution, the vent is connected to an air valve 1.

[0038] According to a further optimization scheme, a pressure sensor 18 and a pressure regulating device 19 are provided in the hydraulic circuit, and the pressure sensor 18 is electrically connected to the pressure regulating device 19.

[0039] The pressure sensor 18 is used to preset a preset value in the hydraulic circuit and control the opening and closing of the pressure regulating device 19, which is used to regulate the liquid pressure in the circuit.

[0040] To further optimize the solution, a one-way speed regulating valve 16 and a cleanliness detection device 17 are also provided in the hydraulic circuit. The one-way speed regulating valve 16 and the cleanliness detection device 17 are electrically connected to adjust the flow rate of the liquid flowing to the cleanliness detection device 17. The cleanliness detection device 17 is used to detect the cleanliness of the circuit liquid.

[0041] The cleanliness detection device 17 is used to detect the cleanliness of pure water and provide feedback at the same time to control the switch control valve 14 to open the switch holes of different cleaning components 11. The pressure sensor 18 presets different pressures to control the pressure rise and fall of the hydraulic system, which is used to flush different tools through pressure differences. Cleaning components 11 and filtering components 12 are set at both ends of the piston 5. As the piston 5 moves back and forth, the cleaning component 11 scrapes the particles on the inner wall of the cylinder into the liquid, and filters the liquid containing particles through the filtering component 12 in time.

[0042] A cleanliness detection device 17 is provided in the hydraulic circuit. A part of the liquid flows into the cleanliness detection device 17 through the one-way speed regulating valve 16. When the cleanliness detection device 17 detects that the cleanliness of the liquid is unqualified, it will transmit a signal to the terminal. The terminal processes the signal and sends the signal to the switch control valve 14. When the pollution level is not high, the switch control valve 14 controls the switch hole of the cleaning component 11 to open. When the pollution level is serious, the switch control valve controls the hole of the cleaning component 11 to open; the pressure sensor 18, because different cleaning components 11 require different pressures to open, two groups of pressure values ​​are set by the pressure sensor 18. After receiving the signal processed by the terminal, the relevant pressure value is enabled to control the pressure regulating device 19 to increase the pressure to a preset value; the pressure regulating device 19 is used to regulate the pressure in the circuit. When the cleaning component 11 needs to work, the pressure regulating device 19 will increase the liquid pressure in the circuit, flush the cleaning component 11 to contact the inner wall, and perform cleaning work; when the cleaning component 11 needs to work, The switch control valve 14 will receive the signal processed by the terminal and control the corresponding switch valve port to open. At the same time, the pressure sensor 18 will receive another set of signals from the terminal and control the pressure regulating device 19 to increase the pressure of the entire hydraulic system. The high-pressure liquid will pass through the annular liquid through hole where the switch valve port cleaning component 11 is located. The cleaning component 11 will be pushed out of the piston 5 through the pressure difference. The cutter head will contact the inner wall and work. The liquid containing impurities will be initially filtered by the filter component 12. The filtered liquid is temporarily stored in the liquid chamber 13. The liquid in the liquid storage chamber 13 is filtered for the second time through the filter structure of the cleaning component 11. The filtered liquid flows back to the liquid chamber 20 and flows out through the liquid through hole 10. When the cleaning work is completed, the switch control valve 14 receives the terminal signal to control the valve port to close. At the same time, the pressure sensor 18 receives the signal to reduce the pressure of the entire hydraulic circuit, and the cleaning component 11 is retracted into the piston 5. The excess liquid generated by the pressure regulation flows back to the oil tank through the one-way speed regulating valve 16 and the cleanliness detection device 17.

[0043] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0044] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. An accumulator system with an automatic cleaning function, characterized in that: It includes a housing (4), an upper end cover (3) and a lower end cover (7) are respectively installed on the top surface and the bottom surface of the housing (4). A piston (5) is slidably connected in the housing (4). The piston (5) is located between the upper end cover (3) and the lower end cover (7). The piston (5) divides the interior of the housing (4) into a gas chamber (21) and a liquid chamber (20). On the side of the piston (5) close to the liquid chamber (20), cleaning components (11) are symmetrically arranged. An air vent is provided on the upper end cover (3), and a liquid through hole (10) is provided on the lower end cover (7). A hydraulic circuit is formed in the liquid chamber (20).

2. The accumulator system with an automatic cleaning function according to claim 1, characterized in that: The cleaning components (11) are two groups of annular scrapers with different blade thicknesses, which are arranged circumferentially in the piston (5).

3. The accumulator system with an automatic cleaning function according to claim 1, characterized in that: A plurality of L-shaped liquid through holes (15) are equidistantly arranged circumferentially on the bottom surface of the piston (5). An annular liquid through hole is arranged on the side of the cleaning component (11) close to the inside of the piston (5). On the side of the piston (5) close to the liquid chamber (20), a plurality of groups of switch valve ports are provided. The switch valve ports are communicated with the annular liquid through hole. A switch control valve (14) is provided between the L-shaped liquid through hole (15) and the cleaning component (11).

4. The accumulator system with an automatic cleaning function according to claim 3, characterized in that: A filter component (12) is provided at one end of the L-shaped liquid through hole (15). The filter component (12) is communicated with the liquid chamber (20). The other end of the L-shaped liquid through hole (15) is located between the piston (5) and the inner wall of the housing (4) and a liquid storage chamber (13) is provided.

5. The accumulator system with an automatic cleaning function according to claim 1, characterized in that: The center of the cleaning component (11) is provided as a filter net.

6. The accumulator system with an automatic cleaning function according to claim 1, characterized in that: A plurality of piston seals (6) are provided between the piston (5) and the housing (4).

7. The accumulator system with an automatic cleaning function according to claim 1, characterized in that: An upper end cover protection piece (2) is provided between the upper end cover (3) and the housing (4), a lower end cover protection piece (9) is provided between the lower end cover (7) and the housing (4), and end cover seals (8) are respectively provided between the upper end cover (3) and the housing (4) and between the lower end cover (7) and the housing (4).

8. The accumulator system with an automatic cleaning function according to claim 1, characterized in that: The air vent is communicated with an air valve (1).

9. The accumulator system with an automatic cleaning function according to claim 1, characterized in that: A pressure sensor (18) and a pressure regulating device (19) are provided in the hydraulic circuit. The pressure sensor (18) is electrically connected to the pressure regulating device (19).

10. The accumulator system with an automatic cleaning function according to claim 1, characterized in that: A one-way speed regulating valve (16) and a cleanliness detection device (17) are further provided in the hydraulic circuit. The one-way speed regulating valve (16) is electrically connected to the cleanliness detection device (17).

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