Leather bag type energy accumulator

Abstract

The invention relates to the technical field of energy accumulators, and particularly discloses a leather bag type energy accumulator which comprises a tank body and a leather bag located in the tank body, an upper support and a lower support which are located on the upper side and the lower side of the leather bag correspondingly are arranged in the tank body, and the lower support can be lifted when oil enters the tank body to conduct compression energy storage on the leather bag; the upper support can ascend and descend in the tank body, release or compress the space where the leather bag is located, a sliding rheostat is arranged on the tank body, and a variable resistance sliding block is arranged on the sliding rheostat. According to the leather bag type energy accumulator, compression during energy storage of the leather bag is completed through mutual cooperation of the upper support and the lower support, the lifting height of the lower support can be detected, and the change of gas pressure in the leather bag outside the tank body can be monitored in real time through the slide rheostat, so that maintenance of detection equipment can be facilitated; and when the pressure of the leather bag is abnormal, an alarm can be given in time, and equipment damage caused by the fact that the pressure abnormity is not found in time is effectively avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of accumulators, in particular to a skin bag type accumulator. BACKGROUND

[0002] The skin bag type accumulator is a commonly used energy storage element in hydraulic systems, which separates gas and hydraulic oil through a skin bag, stores and releases energy by using the compressibility of gas, and plays an important role in stabilizing system pressure, compensating leakage, and absorbing pressure pulsation.

[0003] The existing skin bag type accumulator has many deficiencies in pressure monitoring and emergency treatment. Most accumulators rely on manual periodic detection of skin bag pressure and cannot real-time master the internal pressure change of the accumulator. When the skin bag has sudden pressure abnormalities, it is difficult to find out in time, which may cause equipment failure and even safety accidents, and will lead to product quality decline or even scrap. Moreover, after discovering the abnormal pressure of the skin bag, there is a lack of corresponding emergency treatment function, and the abnormality of the skin bag cannot be adjusted in time, so immediate shutdown for repair is often needed to avoid greater losses, but it will affect or even interrupt the processing of products being produced, leading to product defects and scrap, and causing material waste. SUMMARY

[0004] The present application provides a skin bag type accumulator, which aims to solve the problem that when the skin bag has sudden pressure abnormalities, it is difficult to find out in time, and after discovering the abnormal pressure of the skin bag, the abnormality of the skin bag cannot be adjusted in time.

[0005] The skin bag type accumulator of the present application comprises a tank body and a skin bag located inside the tank body, the inside of the tank body is provided with an upper support and a lower support located on the upper and lower sides of the skin bag respectively, and the lower support can be lifted when oil enters the tank body to compress and store energy for the skin bag. A lifting shaft is arranged in the tank body, and the lifting shaft can slide up and down in the tank body to drive the upper support to lift in the tank body, so that the upper support is close to or away from the lower support. A sliding rheostat is arranged on the tank body, a rheostat sliding block is slidably arranged on the sliding rheostat, and the rheostat sliding block can slide relative to the sliding rheostat with the lifting of the lower support. The sliding rheostat can slide relative to the rheostat sliding block with the lifting of the upper support.

[0006] Preferably, the top of the tank body is provided with an upper mounting seat, and the upper mounting seat is detachably connected with the tank body through bolts. The inside of the upper mounting seat is provided with an air pipe, and the air pipe is provided with an inflation valve.

[0007] Preferably, the air pipe is composed of an upper pipe body and a lower pipe body, the upper pipe body is fixedly installed in the inner part of the upper mounting seat, the inflation valve is fixedly installed in the inner part of the air pipe, the lower pipe body is slidably installed in the inner part of the upper pipe body, and the bottom end of the lower pipe body extends into the inner part of the tank body and is fixedly connected with the skin bag.

[0008] Preferably, the upper support is composed of an outer ring and an inner disc, the outer ring is arranged at the top of the skin bag, the inner disc is arranged in the inner part of the outer ring, and the inner disc is coaxially fixed outside the bottom end of the lower pipe body.

[0009] Preferably, the top of the outer ring is provided with a stepped groove, the inner part of the stepped groove is provided with an L-shaped limiting groove, a clamping plate fixedly installed in the limiting groove is arranged on the inner disc, and the clamping plate can be turned out of the limiting groove by rotating the inner disc.

[0010] Preferably, the lower support is composed of a bottom plate and a backing plate, the bottom plate is arranged below the skin bag, the bottom plate can slide in the tank body in single degree of freedom, and a sealing gasket is arranged between the bottom plate and the inner wall of the tank body.

[0011] Preferably, a pedestal is slidably arranged on the tank body and extends into the inner part of the tank body, a connecting rod is fixedly installed at the top of the outer ring, the top end of the connecting rod is fixedly connected with the pedestal, and a sliding rheostat is fixedly installed on the pedestal.

[0012] Preferably, a sliding rod is vertically fixed on the bottom plate, the side wall of the sliding rod is closely arranged against the inner wall of the tank body, the top end of the sliding rod extends out of the top of the tank body and is fixedly connected with a variable resistance sliding block, a missing groove is arranged on the outer ring and matched with the sliding rod, and the sliding rod is slidably arranged in the missing groove.

[0013] Preferably, an adjusting rod is vertically fixed on the tank body, a lifting shaft is slidably arranged in the adjusting rod, the bottom end of the lifting shaft extends into the tank body and is fixedly connected with the outer ring, and a driving box for driving the lifting shaft to lift is arranged on one side of the adjusting rod.

[0014] Beneficial effects: In use, the skin bag is compressed by the cooperation of the upper support and the lower support, the change of the gas pressure in the skin bag is monitored in real time by the sliding rheostat outside the tank body through the detection of the lifting height of the lower support, the skin bag pressure is abnormally alarmed in time, the equipment damage caused by the abnormal pressure is avoided in time, the emergency treatment of the skin bag is automatically made by the adjusting assembly, the pressure state of the skin bag is adjusted, the skin bag can maintain the normal operation of the equipment in normal state, the pressure correction can be completed in the production process without shutdown, the loss such as the scrap of semi-finished products and the interruption of the production line is avoided, the application is especially suitable for continuous production scenes such as injection molding and hydraulic processing, the high-quality production of products is ensured, the shutdown maintenance of the energy accumulator can be carried out after the production is completed, the normal production and processing are not affected, and the waste of materials is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a perspective view of the present application.

[0016] Figure 2 is a perspective view of the present application Figure 1 is an enlarged structural schematic view at A in the present application.

[0017] Figure 3 is a front view of the present application.

[0018] Figure 4 is a sectional view of the present application.

[0019] Figure 5 is a perspective view of the upper support of the present application.

[0020] Figure 6 is a schematic view of the outer ring and the inner ring in a split state of the present application.

[0021] REFERENCE NUMERALS: 10, tank; 11, upper mounting seat; 12, air pipe; 121, upper pipe body; 122, lower pipe body; 123, shroud; 13, inflation valve; 14, lower mounting seat; 15, oil pipe; 16, support block; 17, mushroom valve; 20, bladder; 30, upper support; 31, outer ring; 311, stepped groove; 312, limiting groove; 313, missing groove; 314, connecting rod; 32, inner disc; 321, clamping plate; 40, lower support; 41, bottom plate; 411, sealing gasket; 412, slide rod; 42, backing plate; 50, detection mechanism; 51, pedestal; 52, slide rheostat; 53, rheostat slide block; 60, adjusting assembly; 61, adjusting rod; 62, lifting shaft; 63, drive box. DETAILED DESCRIPTION

[0022] Embodiments of the present application are described in detail below with reference to the attached drawings. The embodiments described below are examples of the present application, and are intended to explain the present application, and should not be understood as limiting the present application.

[0023] As Figures 1 to 6As shown, the skin bag type energy accumulator of the present application comprises a tank body 10, a skin bag 20, an upper support 30, a lower support 40, a detection mechanism 50 and an adjusting assembly 60, the skin bag 20 is arranged inside the tank body 10, the upper support 30 and the lower support 40 are respectively located on the upper and lower sides of the skin bag 20, the lower support 40 can be lifted inside when the oil enters the inside of the tank body 10, and cooperates with the upper support 30 to extrude the skin bag 20, so that the gas in the skin bag 20 is compressed and stored, the detection mechanism 50 is arranged between the tank body 10 and the lower support 40, and can detect the compression state of the skin bag 20 during the lifting of the lower support 40, and the adjusting assembly 60 is arranged on one side of the upper support 30, and can adjust the height of the upper support 30 when the detection mechanism 50 detects that the skin bag 20 is abnormally compressed, so as to adjust the compression state of the skin bag 20.

[0024] With reference to Figure 1 , Figure 3 and Figure 4 , the top of the tank body 10 is provided with an upper mounting seat 11, and the upper mounting seat 11 is detachably connected with the tank body 10 through bolts, the inside of the upper mounting seat 11 is provided with an air pipe 12 to communicate the inside and outside of the tank body 10, and the air pipe 12 is provided with an inflation valve 13 to close the air pipe 12.

[0025] The air pipe 12 is composed of an upper pipe body 121 and a lower pipe body 122, the upper pipe body 121 is fixedly installed in the inside of the upper mounting seat 11, the inflation valve 13 is fixedly installed in the inside of the air pipe 12, the lower pipe body 122 is slidably assembled in the inside of the upper pipe body 121 in single degree of freedom, the bottom end of the lower pipe body 122 extends to the inside of the tank body 10 and is fixedly connected with the skin bag 20 to inflate or deflate the skin bag 20, a sealing ring is arranged between the lower pipe body 122 and the upper pipe body 121 to seal the space between the upper pipe body 121 and the lower pipe body 122 and prevent gas leakage, and a protective cover 123 is arranged at the top end of the upper pipe body 121 to protect the pipe opening of the air pipe 12.

[0026] The bottom of the tank body 10 is provided with a lower mounting seat 14, an oil pipe 15 is fixedly installed in the inside of the lower mounting seat 14 to fill or discharge oil into or out of the tank body 10, a support block 16 is fixedly installed in the inside of the oil pipe 15, and a fungus valve 17 is arranged on the support block 16 and located at the upper end of the oil pipe 15.

[0027] With reference to Figure 4 , Figure 5 and Figure 6The upper support 30 is composed of an outer ring 31 and an inner disc 32. The outer ring 31 is arranged at the top of the bladder 20, and the inner disc 32 is arranged inside the outer ring 31 and fixed coaxially at the outer side of the bottom end of the lower tube body 122. The top of the outer ring 31 is provided with a stepped groove 311, and the inside of the stepped groove 311 is provided with an L-shaped limiting groove 312. A clamping plate 321 is fixedly installed on the inner disc 32 and located in the limiting groove 312. The clamping plate 321 can be turned out of the limiting groove 312 with the rotation of the inner disc 32, thereby releasing the limiting between the outer ring 31 and the inner disc 32, so that the inner disc 32 can be separated from the outer ring 31, facilitating the disassembly and replacement of the bladder 20.

[0028] Referring to Figure 4 The lower support 40 is composed of a bottom plate 41 and a pad plate 42. The bottom plate 41 is arranged below the bladder 20 and can slide in a single degree of freedom in the tank body 10. A sealing pad 411 is arranged between the bottom plate 41 and the inner wall of the tank body 10, so that the bottom plate 41 and the tank body 10 are kept in a sealed state. The pad plate 42 is fixedly installed on the top of the bottom plate 41 and is attached to the bottom of the bladder 20, used for supporting and pushing the bottom of the bladder 20.

[0029] Referring to Figure 2 , Figure 3 and Figure 4 The detection mechanism 50 includes a pedestal 51, a sliding rheostat 52 and a rheostat sliding block 53. The pedestal 51 is slidably arranged on the tank body 10 and extends into the tank body 10 at the bottom end, so as to be raised and lowered with the outer ring 31. The sliding rheostat 52 is fixedly installed on the pedestal 51. The rheostat sliding block 53 is arranged on the sliding rheostat 52 and can slide in the sliding rheostat 52 with the lifting of the bottom plate 41, so as to facilitate the detection of the gas pressure in the bladder 20.

[0030] The bottom plate 41 is vertically fixed with a slide rod 412, and the side wall of the slide rod 412 is closely arranged to the inner wall of the tank body 10. The top end of the slide rod 412 is fixed to the variable resistance sliding block 53, so that the bottom plate 41 can drive the variable resistance sliding block 53 to slide on the sliding rheostat 52 when it is lifted, and then the sliding rheostat 52 detects the gas pressure in the bladder 20. The outer ring 31 is provided with a missing groove 313 matched with the slide rod 412, and the slide rod 412 is slidably arranged in the missing groove 313. The top end of the connecting rod 314 is fixed to the pedestal 51, so that the outer ring 31 and the slide rod 412 can slide relative to each other, and the pedestal 51 is lifted and lowered by the connecting rod 314 when the outer ring 31 is lifted and lowered, so that the sliding rheostat 52 slides relative to the rheostat sliding block 53, and then the detection data of the sliding rheostat 52 is adjusted accordingly when the pressure of the bladder 20 is adjusted, so as to realize the detection of the gas pressure in the bladder 20.

[0031] Referring to Figure 4 , the adjusting assembly 60 comprises an adjusting rod 61, a lifting shaft 62 and a driving box 63, the adjusting rod 61 is vertically fixed on the tank body 10, the lifting shaft 62 is slidingly assembled in the adjusting rod 61, and the bottom end of the lifting shaft 62 extends into the tank body 10 and is fixed with the outer ring 31, the driving box 63 is arranged on one side of the adjusting rod 61 and can drive the lifting shaft 62 to slide and lift in the adjusting rod 61, thereby driving the outer ring 31 to lift in the tank body 10, adjusting the space between the upper support 30 and the lower support 40, releasing or further compressing the space where the bladder 20 is located, and adjusting the gas pressure in the bladder 20, in the present scheme, the driving box 63 is specifically an electric push rod.

[0032] One side of the sliding rheostat 52 is provided with a controller and an alarm (not shown in the figure), and the alarm and the driving box 63 are signal connected with the controller, the controller is built-in microprocessor and preset resistance threshold program, can receive the resistance value signal transmitted by the sliding rheostat 52 by the microprocessor, and compare and analyze with the preset resistance value threshold, when the resistance value is higher or lower than the preset threshold interval, the signal is transmitted to the alarm to issue an alarm warning to the staff, and the signal is transmitted to the driving box 63 to adjust the lifting shaft 62 to lift the upper support 30 accordingly, so that the driving box 63, the lifting shaft 62 and the upper support 30 are the core components, and form a closed loop control with the detection mechanism 50: after the controller receives the resistance abnormal signal, the lifting shaft 62 drives the upper support 30 to lift, the upper support 30 is lifted to release the pressure when the pressure is too high, the upper support 30 is lowered to compress the space of the bladder 20 when the pressure is too low, and the resistance value returns to the normal threshold interval.

[0033] In the present scheme, the gas volume in the bladder 20 is determined by the initial volume, the compression amount of the lower support 40 and the adjusting amount of the upper support 30, therefore, the gas volume expression in the scheme satisfies the following formula: Wherein, represents the real-time volume of the gas, the unit is ; represents the initial volume of the gas, the unit is ; represents the equivalent cross-sectional area of the bladder 20 when it is extruded, the unit is ; represents the lifting distance of the variable resistance sliding block 53 relative to the initial position following the lower support 40, the unit is ; y represents the lifting distance of the sliding rheostat 52 relative to the initial position following the upper support 30, the unit is .

[0034] Substitute the real-time volume of the gas into the Boyle's law: The relative displacement between the variable resistance slider 53 and the slide rheostat 52 and the pressure of the gas inside the bladder 20 satisfy the following expression: Wherein, represents the sliding distance of the variable resistance slider 53 relative to the slide rheostat 52, and the unit is ; represents the initial volume of the gas, and the unit is ; represents the real-time pressure of the gas inside the bladder 20, and the unit is ; represents the initial pressure of the gas, and the unit is .

[0035] Therefore, the higher the lower support 40 is lifted, the greater the real-time pressure of the gas inside the bladder 20 , the greater the sliding distance of the variable resistance slider 53 relative to the slide rheostat 52 , and the greater the resistance change.

[0036] At the same time, in the variable resistance slider 53, the resistance value changes linearly with the sliding distance of the variable resistance slider 53 relative to the slide rheostat 52 , satisfying the formula: Wherein, represents the real-time resistance value of the slide rheostat 52, and the unit is ; represents the initial resistance value at ; represents the resistance change amount corresponding to a unit relative displacement, and the unit is .

[0037] Therefore, in the present scheme, the real-time pressure of the gas inside the bladder 20 and the real-time resistance on the slide rheostat 52 satisfy the following formula: The change of the resistance on the slide rheostat 52 can be used to monitor the pressure of the gas inside the bladder 20 in real time.

[0038] Working principle: The bladder 20 in the tank body 10 is filled with an appropriate amount of inert gas by the air pipe 12, and then the bacteria valve 17 is opened. The oil enters from the oil pipe 15 below the tank body 10, and is pushed up by the lower support 40 under the action of oil pressure. The upper support 30 is pressed against the bladder 20, so that the inert gas inside the bladder 20 is gradually compressed and stored.

[0039] When the lower support 40 is lifted, the variable resistance slider 53 on the sliding rheostat 52 is pushed to slide by the slide rod 412 on the bottom plate 41, the resistance value of the sliding rheostat 52 is changed, and then the pressure of the bladder 20 is detected by the sliding rheostat 52. When the lifting height of the lower support 40 promoted by the oil pressure is larger, the pressure of the bladder 20 is larger, and the resistance value of the sliding rheostat 52 is larger. When the lifting height of the lower support 40 promoted by the oil pressure is smaller, the pressure of the bladder 20 is relatively smaller, and the resistance value of the sliding rheostat 52 is smaller. When the oil stops entering the tank 10, when the resistance value of the sliding rheostat 52 received by the controller meets the preset threshold interval, it means that the gas pressure in the bladder 20 is normal, and the equipment is normal.

[0040] When the oil stops entering the tank 10, when the resistance value of the sliding rheostat 52 received by the controller is greater than the preset threshold interval, it means that the gas pressure in the bladder 20 is too large, the inert gas is excessively compressed and stored, the equipment is abnormal, the controller transmits a signal to make the alarm alarm to warn the staff, and at the same time transmits a signal to make the drive box 63 work, drives the lifting shaft 62 to lift the upper support 30, gradually increases the distance between the upper support 30 and the lower support 40, and then increases the space range of the bladder 20, so that the gas pressure in the bladder 20 can be gradually released, and the gas pressure is reduced. At the same time, the sliding rheostat 52 is raised relative to the variable resistance slider 53 as the upper support 30 is lifted, so that the sliding rheostat 52 is reduced at the same time as the bladder 20 releases pressure, and the resistance value of the sliding rheostat 52 is reduced. When the resistance value of the sliding rheostat 52 received by the controller returns to the normal threshold interval, the drive box 63 stops working again.

[0041] When the oil stops entering the tank 10, when the resistance value of the sliding rheostat 52 received by the controller is less than the preset threshold interval, it means that the gas pressure in the bladder 20 is small, the inert gas is insufficiently compressed and stored, and the equipment is abnormal. The controller transmits a signal to make the alarm alarm to warn the staff, and at the same time transmits a signal to make the drive box 63 drive the lifting shaft 62 to lower the upper support 30, gradually reduce the distance between the upper support 30 and the lower support 40, and then reduce the space range of the bladder 20, so that the gas in the bladder 20 is further compressed, and the gas pressure is increased. At the same time, the sliding rheostat 52 is lowered relative to the variable resistance slider 53 as the upper support 30 is lowered, so that the sliding rheostat 52 is increased at the same time as the bladder 20 is further compressed, and the resistance value of the sliding rheostat 52 is increased. When the resistance value of the sliding rheostat 52 received by the controller returns to the normal threshold interval, the drive box 63 stops working again.

[0042] The compression of the skin bag 20 during energy storage is completed by the cooperation of the upper support 30 and the lower support 40, the change of the gas pressure in the skin bag 20 can be monitored in real time outside the tank body 10 by the sliding rheostat 52 through the detection of the lifting height of the lower support 40, the alarm can be given in time when the pressure of the skin bag 20 is abnormal, the damage of the equipment caused by the abnormal pressure not being found in time can be effectively avoided, the emergency treatment can be automatically made by the adjusting assembly 60 for the abnormal skin bag 20, the pressure state of the skin bag 20 is adjusted, the skin bag 20 can maintain the normal operation of the equipment in a normal state, the emergency treatment is not needed, the pressure correction can be completed in the production process, the loss such as the scrapping of the semi-finished product and the interruption of the production line is avoided, especially suitable for the continuous production scenes such as injection molding and hydraulic processing, the high-quality production of the product is ensured, the shutdown maintenance of the energy accumulator can be carried out after the production is completed, the normal production and processing are not affected, the waste of materials is avoided, the tank body 10 with high pressure does not need to be contacted by the staff throughout the process, the remote automatic adjustment is realized through the electric control system, the safety risk of high-pressure operation is reduced, the core detection components such as the sliding rheostat 52 and the variable resistance slider 53 are arranged outside the tank body 10, the calibration and replacement can be completed without disassembling the energy accumulator, the complicated problem of “shell maintenance” is solved.

[0043] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A bladder accumulator comprising a tank body (10) and a bladder (20) located inside thereof, characterized in that, The inside of the tank body (10) is provided with an upper support (30) and a lower support (40) located on the upper and lower sides of the bladder (20) respectively, and the lower support (40) can be lifted when oil enters the tank body (10) to compress the bladder (20) to store energy; The inside of the tank body (10) is provided with a lifting shaft (62), which can slide up and down in the tank body (10) to drive the upper support (30) to lift in the tank body (10), so that it approaches or moves away from the lower support (40). The tank body (10) is provided with a sliding resistor (52), and the sliding resistor (52) is provided with a variable resistance slider (53) sliding thereon, and the variable resistance slider (53) can slide relative to the sliding resistor (52) with the lifting of the lower support (40). The sliding resistor (52) can slide relative to the variable resistance slider (53) with the lifting of the upper support (30).

2. The bladder accumulator of claim 1, wherein, The top of the tank body (10) is provided with an upper mounting seat (11), and the upper mounting seat (11) and the tank body (10) are detachably connected by bolts. The inside of the upper mounting seat (11) is provided with an air pipe (12), and the air pipe (12) is provided with an inflation valve (13).

3. The bladder accumulator of claim 2, wherein, The air pipe (12) is composed of an upper pipe body (121) and a lower pipe body (122). The upper pipe body (121) is fixedly installed in the inside of the upper mounting seat (11), the inflation valve (13) is fixedly installed in the inside of the air pipe (12), and the lower pipe body (122) is slidingly assembled in the inside of the upper pipe body (121) in single degree of freedom, and the bottom end of the lower pipe body (122) extends into the inside of the tank body (10) and is fixed and communicated with the bladder (20).

4. The bladder accumulator of claim 3, wherein, The upper support (30) is composed of an outer ring (31) and an inner disc (32). The outer ring (31) is arranged at the top of the bladder (20), and the inner disc (32) is arranged in the inside of the outer ring (31) and is coaxially fixed outside the bottom end of the lower pipe body (122).

5. The bladder accumulator of claim 4, wherein, The top of the outer ring (31) is provided with a stepped groove (311), and the inside of the stepped groove (311) is provided with an L-shaped limiting groove (312). The inner disc (32) is fixedly installed with a clamping plate (321) in the limiting groove (312), and the clamping plate (321) can be turned out of the limiting groove (312) with the rotation of the inner disc (32).

6. The bladder accumulator of claim 5, wherein, The lower support (40) is composed of a bottom plate (41) and a pad (42). The bottom plate (41) is arranged below the bladder (20) and can slide up and down in the tank body (10) in single degree of freedom. The bottom plate (41) is provided with a sealing gasket (411) between the tank body (10) and the inner wall.

7. The bladder accumulator of claim 6, wherein, The tank body (10) is slidingly assembled with a pedestal (51), and the bottom end of the pedestal (51) extends into the inside of the tank body (10). The top of the outer ring (31) is fixedly installed with a connecting rod (314), and the top end of the connecting rod (314) is fixed with the pedestal (51). The sliding resistor (52) is fixedly installed on the pedestal (51).

8. The bladder accumulator of claim 6, wherein, The slide rod (412) is vertically fixed on the bottom plate (41), and the side wall of the slide rod (412) is close to the inner wall of the tank body (10) and is fixed at the top end of the slide rod (412) by the tank body (10). The outer ring (31) is provided with a slot (313) matched with the slide rod (412), and the slide rod (412) is slidably arranged in the slot (313).

9. The bladder accumulator of claim 8, wherein, The adjusting rod (61) is vertically fixed on the tank body (10), the lifting shaft (62) is slidably arranged in the adjusting rod (61), and the bottom end of the lifting shaft (62) extends into the tank body (10) and is fixed with the outer ring (31). One side of the adjusting rod (61) is provided with a drive box (63) for driving the lifting shaft (62) to ascend and descend.

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