CN204900365U - Hydraulic pressure separated accumulator capsule - Google Patents

Abstract

The utility model discloses a hydraulic isolation type accumulator capsule, which comprises a capsule body, one end of the capsule body is an open end, and is characterized in that a sealing ring is formed on the edge of the open end of the capsule body, A sealing head is installed on the opening end of the sealing head, and a pressing ring is installed on the sealing head, and the sealing ring is wrapped and sealed between the sealing head and the pressing ring. The utility model has the advantages that: since the hydraulic isolation type accumulator capsule has a sealing ring formed on the edge of the opening end of the capsule body, a sealing head is installed on the opening end of the capsule body, and a pressure ring is fastened on the sealing head, And the sealing ring is wrapped and sealed between the head and the pressure ring, so the sealing structure between the accumulator capsule and the head is relatively novel, the sealing performance is good, and the gas leakage in the capsule can be effectively avoided, and the sealing The structure can be applied to an integrally formed capsule.

Description

Hydraulic Isolation Accumulator Capsule

technical field

The utility model relates to a hydraulic isolation type accumulator, in particular to a hydraulic isolation type accumulator capsule.

Background technique

The capsule accumulator is an indispensable hydraulic accessory in the hydraulic system, which plays the role of storing energy, stabilizing pressure, eliminating pulsation, absorbing shock, compensating capacity and compensating leakage. The capsule accumulator is composed of an oil part and a capsule (with nitrogen inside) with an airtight spacer. The oil around the capsule is connected to the hydraulic circuit. When the pressure rises, the oil enters the capsule accumulator. The gas in the capsule is compressed, and when the pressure drops, the compressed gas expands, and then presses the oil into the circuit. From the above working process, it can be seen that the hydraulic isolation accumulator capsule is an important part of the hydraulic accumulator, and the sealing performance of the accumulator capsule interface directly affects the quality and performance of the accumulator. If the capsule interface is sealed If the performance is not good, it is easy to cause gas leakage in the capsule, which will affect the normal use of the accumulator.

At present, the interface of the accumulator capsule on the market is prone to leakage, and the self-sealing performance is poor. The accumulator needs to be overhauled frequently. The Chinese utility model patent discloses an "accumulator capsule", which has a groove on the inner surface of the upper opening of the capsule. After the upper opening is matched with the parts, under the action of pressure, the groove can play a role Self-sealing effect. Although the accumulator capsule has a certain effect on improving the sealing performance of the opening of the capsule after the above-mentioned improvement is carried out, the sealing effect is not good enough. In addition, the existing capsule body is formed by bonding the upper and lower parts into one body through an adhesive. Not only is there a gap at the bonding place, but also the process is complicated and the labor cost is high. To sum up, it is necessary to further improve the existing accumulator capsule structure.

Utility model content

The technical problem to be solved by the utility model is to provide a hydraulic isolation accumulator capsule with an open end joint structure suitable for an integrally formed capsule and with good sealing performance for the joint in view of the above-mentioned prior art.

The technical scheme adopted by the utility model to solve the above-mentioned technical problems is: the capsule of the hydraulic isolation type accumulator includes a capsule body, one end of the capsule body is an open end, and it is characterized in that: the edge of the open end of the capsule body is formed with As for the sealing ring, a sealing head is installed on the opening end of the capsule, and a pressing ring is installed on the sealing head, and the sealing ring is wrapped and sealed between the sealing head and the pressing ring.

Preferably, the head has an inverted T-shaped structure, and a lower positioning groove is opened on the outer periphery of the upper surface of the horizontal part of the head, and the pressure ring is fastened on the vertical part of the head and pressed against the On the horizontal part of the pressure ring, an upper positioning groove is formed on the outer periphery of the lower surface of the pressure ring, and the sealing ring is wrapped and sealed between the lower positioning groove and the upper positioning groove.

Further preferably, the pressure ring includes a lower pressure ring and an upper pressure ring fixed to each other, and the lower pressure ring is a hard ring sleeved and tightly fitted on the vertical part of the head. The outer periphery of the lower surface of the pressing ring is provided with the upper positioning groove, and the pressing ring is a flexible ring covering the pressing ring. The hard ring for the lower pressure ring can be closely matched with the head, and the flexible ring for the upper pressure ring can effectively prevent the hard lower pressure ring from colliding with the shell of the accumulator.

Further preferably, the top of the inner circumference of the upper pressing ring is formed with a flange higher than the top of the lower pressing ring. This flange also forms the sealing ring structure.

Further preferably, the press-down ring is a steel ring or an iron ring, and the press-up ring is a rubber ring.

Further preferably, the capsule body is an integrally formed structure. After the capsule body adopts an integrated molding structure, the integrity of the capsule body is better, the structure is simpler, the production is more convenient, and the labor cost is also greatly reduced.

In order to prevent the bottom of the capsule from being damaged by the impact of the mushroom valve, a thickened block is formed on the inner bottom of the capsule.

The bottom of the capsule can have various structures. Preferably, the bottom of the capsule is an arc-shaped bottom or a flat bottom.

Compared with the prior art, the utility model has the advantages that: since the hydraulic isolation type accumulator capsule forms a sealing ring on the edge of the opening end of the capsule body, a sealing head is installed on the opening end of the capsule body, and a sealing ring is installed on the sealing head There is a pressure ring, and the sealing ring is wrapped and sealed between the head and the pressure ring, so the sealing structure between the accumulator capsule and the head is relatively novel, the sealing performance is good, and the gas in the capsule can be effectively avoided Leakage, and the sealing structure can be applied to integrally formed capsules.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the sectional view of the utility model embodiment;

Fig. 3 is a schematic structural view of the head of the utility model embodiment;

Fig. 4 is a structural schematic diagram of a pressure ring according to an embodiment of the present invention;

Fig. 5 is a structural schematic diagram of another angle of the pressure ring according to the embodiment of the present invention.

Detailed ways

The utility model is described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1 to 5, the hydraulically isolated accumulator capsule in this embodiment includes a capsule body 1, a head 2 and a pressure ring 3, one end of the capsule body 1 is an open end, and a seal is formed on the edge of the open end. Ring 11, the sealing ring 11 has a flange extending upwards and downwards, the head 2 is installed on the opening end of the capsule body 1, the pressure ring 3 is installed on the head 2, the above-mentioned sealing ring 11 is wrapped and sealed on the head 2 and the pressure ring 3, so as to realize the sealing connection between the head 2 and the capsule body 1, and prevent the gas in the capsule body 1 from leaking through the joint between the head 2 and the capsule body 1.

The head 2 in this embodiment has an inverted T-shaped structure, and a lower positioning groove 21 is formed on the upper surface outer periphery of the horizontal part of the head 2, and the pressure ring 3 is fastened on the vertical part of the head 2 and pressed against it. On the horizontal portion of the head 2 , an upper positioning groove 33 is formed on the outer periphery of the lower surface of the pressure ring 3 , and the sealing ring 11 is wrapped and sealed between the lower positioning groove 21 and the upper positioning groove 33 .

The pressure ring 3 includes a lower pressure ring 31 and an upper pressure ring 32 fixed to each other. The lower pressure ring 31 is a hard ring that is sleeved and tightly fitted on the vertical part of the head 2. The hard ring generally adopts a steel ring Or hoops. There is an upper positioning groove 33 on the periphery of the lower surface of the lower pressure ring 31, and the upper pressure ring 32 is a flexible ring covering the lower pressure ring 31, and the flexible ring generally adopts a rubber ring. In addition, in order to seal the pressure ring 3 with the housing of the accumulator, a flange 34 higher than the top of the lower pressure ring 31 is formed on the top of the inner circumference of the upper pressure ring 32 .

In this embodiment, the capsule body 1 is integrally formed, and its bottom is an arc-shaped bottom structure. In addition, when the capsule body 1 is integrally formed, a thickened block 12 is formed on the inner bottom of the capsule body 1, and the thickened block 12 can prevent the bottom of the capsule body 1 from being damaged by the impact of the mushroom valve of the accumulator.

The above is only the preferred implementation of the present utility model. It should be pointed out that for those skilled in the art, without departing from the principle of the present utility model, various modifications or improvements can be made to the present utility model, such as capsule The bottom of body can also adopt flat bottom structure except adopting arc-shaped bottom structure, and these are all regarded as within the protection scope of the present utility model.

Claims (8)

1. a hydraulic isolation formula energy accumulator capsule, comprise utricule (1), one end of described utricule (1) is opening end, it is characterized in that: the edge of described utricule (1) opening end is formed with seal ring (11), the opening end of described utricule (1) is provided with end socket (2), described end socket (2) is equipped with pressure ring circle (3), and described seal ring (11) is wrapped and is sealed between described end socket (2) and pressure ring circle (3).

2. hydraulic isolation formula energy accumulator capsule according to claim 1, it is characterized in that: described end socket (2) is in inverted T shape structure, lower locating slot (21) is had in the upper surface periphery of this end socket (2) horizontal part, described pressure ring circle (3) is fastened on the vertical portion of end socket (2) and is pressed on the horizontal part of end socket (2), have upper locating slot (33) in the lower surface periphery of pressure ring circle (3), described seal ring (11) is wrapped and is sealed between described lower locating slot (21) and upper locating slot (33).

3. hydraulic isolation formula energy accumulator capsule according to claim 2, it is characterized in that: described pressure ring circle (3) comprise interfix press down ring (31) and upper press ring circle (32), the described ring (31) that presses down is for the sheathed and sclerosphere of close-fitting in described end socket (2) vertical portion, have described upper locating slot (33) in the described periphery pressing down ring (31) lower surface, described upper press ring circle (32) is for covering the flexible rings pressed down on ring (31).

4. hydraulic isolation formula energy accumulator capsule according to claim 3, is characterized in that: the inner circumferential top of described upper press ring circle (32) is formed with the flange (34) above pressing down ring (31) top.

5. hydraulic isolation formula energy accumulator capsule according to claim 3, is characterized in that: described presses down ring (31) for steel ring or iron ring, and described upper press ring circle (32) is rubber ring.

6. hydraulic isolation formula energy accumulator capsule according to claim 1, is characterized in that: described utricule (1) is formed in one structure.

7. hydraulic isolation formula energy accumulator capsule according to claim 1, is characterized in that: form at the inner bottom part of described utricule (1) and add chunk (12).

8. the hydraulic isolation formula energy accumulator capsule according to claim arbitrary in claim 1 to 7, is characterized in that: the bottom of described utricule (1) is arcuate bottom structure or flat-bottom structure.