Bag type energy accumulator

Abstract

The utility model relates to a bag type energy accumulator, and belongs to the field of energy accumulators, the bag type energy accumulator comprises an energy accumulator main body and a liquid inlet formed in the lower surface of the energy accumulator main body, a sealing mechanism is arranged on the inner wall of the liquid inlet, and a pipe connecting mechanism is arranged on the inner wall of the sealing mechanism; the sealing mechanism comprises two fixed sealing rings, a plurality of supporting springs and an elastic compensation sealing ring. According to the bag type energy accumulator, through the innovative design of the sealing mechanism and the combination of the fixed sealing ring, the supporting spring and the elastic compensation sealing ring, the energy accumulator can achieve the more stable and reliable sealing effect, and particularly, the elastic compensation sealing ring can adapt to dynamic changes under different pressures through the arrangement of the supporting spring; the sealing fluid is filled in the sealing fluid to keep tight contact with a pipeline, so that leakage of the hydraulic oil is effectively reduced, the sealing performance of a system is improved, in addition, the sealing effect is further enhanced through filling of the sealing fluid, and a long-term stable sealing state is ensured through flowing compensation of small gaps.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of accumulators, in particular to a bladder accumulator. BACKGROUND

[0002] An accumulator is an energy storage device in a hydraulic pneumatic system. It converts the energy in the system into compressed energy or potential energy at the right time and stores it. When the system needs it, it converts the compressed energy or potential energy into hydraulic or pneumatic pressure and releases it to supply the system again. When the system pressure increases instantaneously, it can absorb part of the energy to ensure normal pressure of the entire system. The most widely used accumulator is a bladder accumulator.

[0003] For example, a kind of accumulator disclosed in Chinese patent announcement No. (CN217898318U) relates to the field of accumulator, including outer shell, outer shell top is equipped with inlet valve, outer shell inside is provided with gas bladder being communicated with inlet valve, two movable baffles are arranged below gas bladder in outer shell inside, the bottom of two movable baffles is slidably connected between movable sliding groove inner wall, movable sliding groove bottom is equipped with rotating screw, rotating screw other end is fixedly connected with rotating nut after being drawn out from outer shell shell wall, liquid bladder is arranged between two movable baffles, liquid bladder is communicated with bottom mushroom valve, mushroom valve outer wall is connected and fixed with outer shell by fastening nut, mushroom valve bottom is drawn out from outer shell shell wall, and inlet is formed in the bottom of mushroom valve, by being provided with gas bladder and liquid bladder, the degree of expansion and contraction of gas bladder can be greatly reduced, and the design of double gas bladder makes it accommodate maximum pressure increase, prolongs the service life of gas bladder.

[0004] However, the existing technology such as the above-mentioned disclosed patent has the problem of poor sealing protection effect of the accumulator liquid inlet. In the prior art, by setting the gas bladder and the liquid bladder, the expansion and contraction degree of the gas bladder can be greatly reduced. The accumulator has two inlets, one conveying inert gas and the other connected with the hydraulic system to receive hydraulic oil for energy storage. The hydraulic oil is connected with the liquid inlet through a pipeline. Due to frequent liquid flow, the sealing element may be gradually worn due to friction, resulting in a decrease in sealing performance and oil pressure leakage due to gaps. Practical new type content

[0005] In view of the deficiencies of the prior art, the application provides a bladder accumulator, which has the advantages of good sealing effect, and solves the problem of poor sealing protection effect of the accumulator liquid inlet.

[0006] To achieve the above-mentioned purpose, the application provides the following technical scheme: a bladder accumulator, comprising an accumulator main body and a liquid inlet formed in the lower surface of the accumulator main body, the inner wall of the liquid inlet is provided with a sealing mechanism, and the inner wall of the sealing mechanism is provided with a pipe connecting mechanism.

[0007] The sealing mechanism comprises two fixed sealing rings, a plurality of supporting springs and an elastic compensation sealing ring, both of the fixed sealing rings are fixed with the inner wall of the liquid inlet, a connecting groove is formed between the inner wall of the liquid inlet and the opposite side of the two fixed sealing rings, one end of the supporting spring is fixed with the inner wall of the connecting groove, and the other end of the supporting spring is fixed with the outer side of the elastic compensation sealing ring, the elastic compensation sealing ring is located between the opposite sides of the two fixed sealing rings, and the connecting groove is filled with sealing fluid.

[0008] By adopting the technical scheme, the sealing reliability and durability are significantly improved by setting the sealing mechanism on the inner wall of the liquid inlet and adopting the combination of fixed sealing rings, supporting springs and elastic compensation sealing rings. The supporting springs provide the necessary elastic force to ensure that the sealing ring can still fit tightly under pressure changes and reduce the risk of leakage.

[0009] Further, the plurality of supporting springs are evenly distributed in the form of a ring on the inner wall of the connecting groove.

[0010] By adopting the technical scheme, the design of the elastic compensation sealing ring allows it to dynamically adapt to pressure changes and maintain sealing effectiveness, even after system pressure fluctuations or long-term operation.

[0011] Further, the thickness of the elastic compensation sealing ring is equal to the distance between the opposite sides of the two fixed sealing rings, and the sealing fluid is a non-solidifying sealant.

[0012] By adopting the technical scheme, the use of non-solidifying sealant as sealing fluid can flow between the sealing components, compensate for small gaps and improve sealing effectiveness, while avoiding the decline in sealing performance caused by aging or hardening of the sealing material.

[0013] Further, the width of the elastic compensation sealing ring is greater than the width of the two fixed sealing rings, and the two fixed sealing rings are rubber sealing rings.

[0014] By adopting the technical scheme, the fixed sealing ring is made of rubber material, providing good elasticity and sealing performance, and the width of the elastic compensation sealing ring is greater than that of the fixed sealing ring, increasing the sealing contact area and further improving the reliability of the sealing.

[0015] Further, the pipe connecting mechanism comprises a fixed screw ring, a pressure-resistant pipe, an internal screw sleeve and a pressure ring, the fixed screw ring is fixed with the inner wall of the elastic compensation sealing ring, the pressure-resistant pipe is threadedly connected with the inner wall of the fixed screw ring, the internal screw sleeve is threadedly connected with the inner wall of the pressure-resistant pipe, and the pressure ring is fixed with the upper surface of the internal screw sleeve and located above the pressure-resistant pipe.

[0016] By adopting the technical scheme, the design of the connecting mechanism, including the fixed screw ring, the pressure-resistant pipe, the internal screw sleeve and the compression ring, provides a stable connection mode, which can withstand the pressure impact in the hydraulic system and reduce the stress concentration at the pipe connection.

[0017] Further, the lower surface of the fixed screw ring is fixed with an auxiliary sealing ring, and the aperture of the auxiliary sealing ring is smaller than the aperture of the fixed screw ring.

[0018] By adopting the technical scheme, the auxiliary sealing ring on the lower surface of the fixed screw ring provides additional sealing protection, and the smaller aperture helps to enhance the sealing effect and prevent hydraulic oil from leaking from the connection between the fixed screw ring and the pipe.

[0019] Further, the diameter of the compression ring is equal to the diameter of the pressure-resistant pipe, and the aperture of the compression ring is equal to the aperture of the internal screw sleeve.

[0020] By adopting the technical scheme, the matching design of the diameter and aperture of the compression ring and the pressure-resistant pipe ensures uniform distribution of pressure during connection, avoiding sealing failure or pipe damage caused by excessive local stress.

[0021] Further, the outer side of the pressure-resistant pipe is provided with external threads for threaded connection with the fixed screw ring.

[0022] By adopting the technical scheme, the external threads on the outer side of the pressure-resistant pipe facilitate connection with the fixed screw ring, simplifying the installation process and facilitating future maintenance and replacement work, thereby improving the maintenance efficiency of the entire accumulator.

[0023] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0024] 1. The bladder accumulator, through the innovative design of the sealing mechanism, uses the combination of the fixed sealing ring, the supporting spring and the elastic compensation sealing ring, and can achieve more stable and reliable sealing effect. In particular, the setting of the supporting spring enables the elastic compensation sealing ring to adapt to dynamic changes under different pressures and maintain close contact with the pipe, thereby effectively reducing the leakage of hydraulic oil and improving the sealing performance of the system. In addition, the filling of the sealing fluid further enhances the sealing effect, and through the flow compensation of the small gap, the long-term stable sealing state is ensured.

[0025] 2. The bladder accumulator, through the structure of the pressure-resistant pipe and the compression ring, not only can withstand the hydraulic impact under high pressure and prevent the deformation of the pipe, but also can exert pressure on the hydraulic pipe through the compression ring to further prevent the disconnection at the connection. This design reduces the wear of the sealing mechanism during the transportation of hydraulic oil, prolongs the service life of the sealing element, and improves the reliability and durability of the entire accumulator, thereby providing a high-efficiency, stable and easy-to-maintain bladder accumulator solution for users. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic diagram of the present application;

[0027] Figure 2 is a sealing mechanism schematic diagram of the present application;

[0028] Figure 3 is a connection mechanism schematic diagram of the present application;

[0029] Figure 4 is a connection mechanism partial schematic diagram of the present application.

[0030] In the figure: 1, accumulator main body; 2, liquid inlet; 3, sealing mechanism; 31, fixed sealing ring; 32, supporting spring; 33, elastic compensation sealing ring; 34, connecting groove; 35, sealing fluid; 4, connection mechanism; 41, fixed screw ring; 42, pressure-resistant pipe; 43, inner screw sleeve; 44, pressure ring; 45, auxiliary sealing ring. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present application.

[0032] Please refer to Figure 1 The capsule accumulator in the embodiment includes an accumulator main body 1 and a liquid inlet 2 arranged on the lower surface of the accumulator main body 1. The inner wall of the liquid inlet 2 is provided with a sealing mechanism 3, and the inner wall of the sealing mechanism 3 is provided with a connection mechanism 4.

[0033] Please refer to Figures 2 to 3In order to improve the sealing effect, the sealing mechanism 3 in the embodiment includes two fixed sealing rings 31, a plurality of supporting springs 32 and an elastic compensation sealing ring 33. The two fixed sealing rings 31 are fixed with the inner wall of the liquid inlet 2. The inner wall of the liquid inlet 2 is provided with a connecting groove 34 between the opposite sides of the two fixed sealing rings 31. One end of the plurality of supporting springs 32 is fixed with the inner wall of the connecting groove 34, and the other end is fixed with the outer side of the elastic compensation sealing ring 33. The two fixed sealing rings 31 are installed on the inner wall of the liquid inlet 2 to ensure that they are tightly matched with the inner wall of the liquid inlet 2. The plurality of supporting springs 32 are installed in the connecting groove 34 of the inner wall of the liquid inlet 2, one end is fixed in the inner wall of the connecting groove 34, and the other end is fixed with the outer side of the elastic compensation sealing ring 33. The elastic compensation sealing ring 33 is placed between the two fixed sealing rings 31 to ensure that it is in the proper position of the supporting spring 32. The elastic compensation sealing ring 33 is located between the opposite sides of the two fixed sealing rings 31. The inside of the connecting groove 34 is filled with a sealing fluid 35. The connecting groove 34 is filled with a non-solidified sealant to form the sealing fluid 35 to compensate for the small gap between the sealing ring and the pipeline.

[0034] In the embodiment, the plurality of supporting springs 32 are annularly and uniformly distributed on the inner wall of the connecting groove 34. The thickness of the elastic compensation sealing ring 33 is equal to the distance between the opposite sides of the two fixed sealing rings 31. The pipeline of the hydraulic system is connected to the liquid inlet 2. The sealing is realized through the action of the elastic compensation sealing ring 33 and the supporting spring 32. The sealing fluid 35 is a non-solidified sealant. The width of the elastic compensation sealing ring 33 is greater than the width of the two fixed sealing rings 31. The two fixed sealing rings 31 are rubber sealing rings. During the operation of the hydraulic system, the sealing mechanism 3 will automatically adjust according to the pressure change. The supporting spring 32 provides the necessary force to maintain the tight contact between the sealing ring and the pipeline. The elastic compensation sealing ring 33 will extrude the sealing fluid 35 to flow to compensate for any gap when deformed and sealed.

[0035] It should be noted that by setting the sealing mechanism in the inner wall of the liquid inlet and using the combination of fixed sealing rings, supporting springs and elastic compensation sealing rings, the reliability and durability of the sealing are significantly improved. The supporting spring provides the necessary elastic force to ensure that the sealing ring can still tightly fit under pressure change, reducing the risk of leakage.

[0036] Please refer to Figure 4In order to reduce the influence of high pressure hydraulic oil on the seal, the connecting mechanism 4 in the embodiment includes a fixed screw ring 41, a pressure-resistant pipe 42, an internal screw sleeve 43 and a compression ring 44. The fixed screw ring 41 is fixed to the inner wall of the elastic compensation sealing ring 33. The pressure-resistant pipe 42 is threadedly connected to the inner wall of the fixed screw ring 41. The internal screw sleeve 43 is threadedly connected to the inner wall of the pressure-resistant pipe 42. The hydraulic pipe with appropriate length and size is selected to ensure that it can match the liquid inlet 2 of the accumulator. The hydraulic pipe is connected to the inner wall of the internal screw sleeve 43. The internal screw sleeve 43 is screwed into the inner wall of the pressure-resistant pipe 42 to form a fixed connection. The compression ring 44 is fixed to the upper surface of the internal screw sleeve 43 and located above the pressure-resistant pipe 42. The end of the hydraulic pipe is made of flexible material, which can be sleeved on the outside of the compression ring 44. The flexible material can provide a certain elasticity to adapt to the pressure change and the slight movement of the pipeline.

[0037] It should be noted that the internal screw sleeve 43 will serve as a connecting piece between the hydraulic pipe and the pressure-resistant pipe 42, and the fixed screw ring 41 is fixed to the inner wall of the elastic compensation sealing ring 33 to provide a stable fixing point for the connecting mechanism 4.

[0038] In the embodiment, the lower surface of the fixed screw ring 41 is fixed with an auxiliary sealing ring 45, and the hole diameter of the auxiliary sealing ring 45 is smaller than the hole diameter of the fixed screw ring 41. The diameter of the compression ring 44 is equal to the diameter of the pressure-resistant pipe 42, and the hole diameter of the compression ring 44 is equal to the hole diameter of the internal screw sleeve 43. An external thread is formed on the outside of the pressure-resistant pipe 42 to be threadedly connected with the fixed screw ring 41. When the internal screw sleeve 43 is connected with the pressure-resistant pipe 42, the compression ring 44 is used to apply pressure to the hydraulic pipe to ensure the tight connection between the hydraulic pipe and the connecting mechanism 4, preventing the hydraulic pipe from falling off due to hydraulic impact or vibration. The design of the pressure-resistant pipe 42 can effectively resist the pressure of the hydraulic oil and prevent the pipeline from deforming under high pressure, thereby reducing the pressure and wear on the sealing mechanism 3.

[0039] It should be noted that through the structure of the pressure-resistant pipe 42 and the compression ring 44, the mechanism not only can withstand the hydraulic impact under high pressure and prevent the pipeline from deforming, but also can apply pressure to the hydraulic pipe through the compression ring 44 to further prevent the connection from falling off. This design reduces the wear on the sealing mechanism 3 during the transportation of hydraulic oil.

[0040] The working principle of the above embodiment is as follows:

[0041] 1. Two fixed sealing rings 31 are installed on the inner wall of the liquid inlet 2, ensuring that they fit tightly with the inner wall of the liquid inlet 2. A number of support springs 32 are installed in the connecting groove 34 of the inner wall of the liquid inlet 2, with one end fixed to the inner wall of the connecting groove 34 and the other end fixed to the outer side of the elastic compensation sealing ring 33. The elastic compensation sealing ring 33 is placed between the two fixed sealing rings 31, ensuring that it is in the appropriate position of the support springs 32. Non-solid sealant is filled in the connecting groove 34 to form a sealed fluid 35 to compensate for the small gap between the sealing ring and the pipeline. The pipeline of the hydraulic system is connected to the liquid inlet 2, and through the action of the elastic compensation sealing ring 33 and the support spring 32, sealing is achieved. During the operation of the hydraulic system, the sealing mechanism 3 will automatically adjust according to the pressure change. The support spring 32 provides the necessary force to maintain the tight contact between the sealing ring and the pipeline. When the elastic compensation sealing ring 33 deforms, it will squeeze the sealed fluid 35 to flow to compensate for any gap.

[0042] (2) Select a hydraulic pipe with appropriate length and size to ensure that it can match the liquid inlet 2 of the accumulator. Connect the hydraulic pipe with the inner wall of the internal screw 43. Screw the internal screw 43 into the inner wall thread of the pressure-resistant pipe 42 to form a fixed connection. The internal screw 43 will serve as a connecting piece between the hydraulic pipe and the pressure-resistant pipe 42. Fix the fixed screw ring 41 to the inner wall of the elastic compensation sealing ring 33 to provide a stable fixing point for the pipe connecting mechanism 4. Use flexible material for the end of the hydraulic pipe to enable it to be fitted on the outside of the compression ring 44. The flexible material can provide a certain elasticity to adapt to pressure changes and small movements of the pipeline. When the internal screw 43 is connected with the pressure-resistant pipe 42, use the compression ring 44 to apply pressure to the hydraulic pipe to ensure the tight connection between the hydraulic pipe and the pipe connecting mechanism 4, preventing it from falling off due to hydraulic impact or vibration. The design of the pressure-resistant pipe 42 can effectively resist the pressure of hydraulic oil, preventing the pipeline from deforming under high pressure, thereby reducing the pressure and wear on the sealing mechanism 3.

Claims

1. A bladder accumulator comprising an accumulator body (1) and a liquid inlet (2) formed in a lower surface of the accumulator body (1), characterized in that: The inner wall of the liquid inlet (2) is provided with a sealing mechanism (3), and the inner wall of the sealing mechanism (3) is provided with a connecting pipe mechanism (4). The sealing mechanism (3) comprises two fixed sealing rings (31), a plurality of supporting springs (32) and an elastic compensation sealing ring (33), the two fixed sealing rings (31) are fixed with the inner wall of the liquid inlet (2), a connecting groove (34) is formed in the inner wall of the liquid inlet (2) and between the opposite sides of the two fixed sealing rings (31), one end of the plurality of supporting springs (32) is fixed with the inner wall of the connecting groove (34), and the other end of the plurality of supporting springs (32) is fixed with the outer side of the elastic compensation sealing ring (33), the elastic compensation sealing ring (33) is located between the opposite sides of the two fixed sealing rings (31), and the connecting groove (34) is filled with a sealing fluid (35).

2. A bladder accumulator according to claim 1, characterized in that: The plurality of supporting springs (32) are annularly and uniformly distributed on the inner wall of the connecting groove (34).

3. A bladder accumulator according to claim 1, characterized in that: The thickness of the elastic compensation sealing ring (33) is equal to the distance between the opposite sides of the two fixed sealing rings (31), and the sealing fluid (35) is a non-solidified sealant.

4. A bladder accumulator according to claim 1, characterized in that: The width of the elastic compensation sealing ring (33) is greater than the width of the two fixed sealing rings (31), and the two fixed sealing rings (31) are rubber sealing rings.

5. A bladder accumulator according to claim 1, characterized in that: The connecting pipe mechanism (4) comprises a fixed screw ring (41), a pressure-resistant pipe (42), an inner screw sleeve (43) and a compression ring (44), the fixed screw ring (41) is fixed with the inner wall of the elastic compensation sealing ring (33), the pressure-resistant pipe (42) is threadedly connected with the inner wall of the fixed screw ring (41), the inner screw sleeve (43) is threadedly connected with the inner wall of the pressure-resistant pipe (42), and the compression ring (44) is fixed with the upper surface of the inner screw sleeve (43) and located above the pressure-resistant pipe (42).

6. A bladder accumulator according to claim 5, characterized in that: The lower surface of the fixed screw ring (41) is fixed with an auxiliary sealing ring (45), and the hole diameter of the auxiliary sealing ring (45) is smaller than the hole diameter of the fixed screw ring (41).

7. A bladder accumulator according to claim 5, characterized in that: The diameter of the compression ring (44) is equal to the diameter of the pressure-resistant pipe (42), and the hole diameter of the compression ring (44) is equal to the hole diameter of the inner screw sleeve (43).

8. A bladder accumulator according to claim 5, characterized in that: The outer side of the pressure-resistant pipe (42) is provided with external threads for threadedly connecting with the fixed screw ring (41).

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