阅读说明：本技术 双缸体活塞分体式中间排气活塞式蓄能器装置 (Double-cylinder piston split type middle exhaust piston type energy accumulator device ) 是由 寸有超 范玉浪 潘贞周 李天齐 张浩然 刘�文 刘凯波 于 2020-06-03 设计创作，主要内容包括：发明公开了双缸体活塞分体式中间排气活塞式蓄能器装置,包括油液腔和与所述油液腔连接在一起的气体腔；所述油液腔包括油液腔壳体和可滑动的设置在所述油液腔壳体内的油液腔活塞；所述油液腔活塞位于所述油液腔壳体的右侧,所述油液腔壳体的左端开设有进、出油液口；所述气体腔包括气体腔壳体和可滑动的设置在所述气体腔壳体内的气体腔活塞；所述气体腔活塞位于所述气体腔壳体的左侧,所述气体腔壳体的右侧设置有充气阀阀芯,所述充气阀阀芯的芯口处设置有堵塞。分体式气体腔和油液腔设计,降低了活塞安装对同轴度的要求,降低了壳体加工难度,该装置有效提高了蓄能器的密封可靠性,且结构简单、工作可靠性高、容易安装、维修方便、使用寿命长。(The invention discloses a double-cylinder piston split type middle exhaust piston type energy accumulator device, which comprises an oil liquid cavity and a gas cavity connected with the oil liquid cavity; the oil cavity comprises an oil cavity shell and an oil cavity piston which is arranged in the oil cavity shell in a sliding manner; the oil liquid cavity piston is positioned on the right side of the oil liquid cavity shell, and an oil inlet and an oil outlet are formed in the left end of the oil liquid cavity shell; the gas chamber comprises a gas chamber housing and a gas chamber piston slidably disposed within the gas chamber housing; the gas cavity piston is positioned on the left side of the gas cavity shell, the right side of the gas cavity shell is provided with an inflation valve core, and a plug is arranged at a core opening of the inflation valve core. The split gas cavity and oil cavity design reduces the requirement of piston installation on coaxiality, reduces the processing difficulty of the shell, effectively improves the sealing reliability of the energy accumulator, and has the advantages of simple structure, high working reliability, easy installation, convenient maintenance and long service life.)

1. Double-cylinder piston split type middle exhaust piston type energy accumulator device is characterized in that: comprises an oil liquid cavity and a gas cavity connected with the oil liquid cavity;

the oil liquid cavity comprises an oil liquid cavity shell (2) and an oil liquid cavity piston (5) which is arranged in the oil liquid cavity shell (2) in a sliding mode; the oil cavity piston (5) is positioned on the right side of the oil cavity shell (2), and an oil inlet and an oil outlet are formed in the left end of the oil cavity shell (2);

the gas cavity comprises a gas cavity shell (7) and a gas cavity piston (6) which is arranged in the gas cavity shell (7) in a sliding way; the gas cavity piston (6) is positioned on the left side of the gas cavity shell (7), the right side of the gas cavity shell (7) is provided with an inflation valve core (8), and a plug (9) is arranged at a core opening of the inflation valve core (8).

2. The split intermediate vented piston accumulator apparatus of claim 1, wherein: the right end of the oil cavity shell (2) and the left end of the gas cavity shell (7) are connected together through threads.

3. The split intermediate vented piston accumulator apparatus of claim 1, wherein: and an O-shaped sealing ring I (1) is arranged at the joint of the outer side walls of the oil inlet and the oil outlet of the oil cavity shell (2).

4. The split intermediate vented piston accumulator apparatus of claim 1, wherein: check rings (4) and star-shaped sealing rings (3) are arranged between the oil cavity shell (2) and the oil cavity piston (5) and between the gas cavity shell (7) and the gas cavity piston (6).

5. The split intermediate vented piston accumulator apparatus of claim 1, wherein: and an O-shaped sealing ring III (11) is arranged between the gas cavity shell (7) and the valve core (8) of the inflation valve.

6. The split intermediate vented piston accumulator apparatus of claim 1, wherein: and an O-shaped sealing ring II (10) is arranged between the valve core (8) of the inflation valve and the plug (9).

7. The split intermediate vented piston accumulator apparatus of claim 4, wherein: grooves for placing the check ring (4) and the star-shaped sealing ring (3) are formed in the outer side walls of the oil cavity piston (5) and the gas cavity piston (6).

8. The split double-cylinder piston intermediate exhaust piston accumulator apparatus of claim 3, 5 or 6, wherein: and the O-shaped sealing ring I (1), the O-shaped sealing ring II (10) and the O-shaped sealing ring III (11) are all rubber sealing rings.

9. The split intermediate vented piston accumulator apparatus of claim 1, wherein: the right end of the oil cavity shell (2) is provided with internal threads.

10. The split intermediate vented piston accumulator apparatus of claim 2, wherein: the left end of the gas cavity shell (7) is provided with an external thread.

Technical Field

The invention relates to the technical field of energy accumulators, in particular to a double-cylinder piston split type middle exhaust piston type energy accumulator device.

Background

The accumulator is used as an auxiliary energy source of the hydraulic system, and can reduce pressure pulsation of the hydraulic system and absorb pressure impact.

The existing piston type energy accumulator generally adopts a single piston, gas and working oil share a cavity, the gas and the hydraulic oil are separated by the single piston, the manufacturing precision of the cavity and the coaxiality of the cavity and the piston are high, the requirement on the sealing property of the piston is high, after a sealing element is abraded, the actual gas leakage rate is high, gas-liquid mixing is easily caused, and the working stability of a system is influenced or even the system fails.

Disclosure of Invention

The invention aims to provide a double-cylinder piston split type middle exhaust piston type energy accumulator device, which solves the problems in the prior art, and can effectively reduce the coaxiality requirement of a cavity and a piston and effectively avoid oil-gas mixing by adopting a structural form of separating a double cylinder body, a double piston, a gas cavity and an oil cavity.

In order to solve the technical problems, the invention adopts the following technical scheme:

the invention relates to a double-cylinder piston split type middle exhaust piston type energy accumulator device, which comprises an oil liquid cavity and a gas cavity connected with the oil liquid cavity;

the oil cavity comprises an oil cavity shell and an oil cavity piston which is arranged in the oil cavity shell in a sliding manner; the oil liquid cavity piston is positioned on the right side of the oil liquid cavity shell, and an oil inlet and an oil outlet are formed in the left end of the oil liquid cavity shell;

the gas chamber comprises a gas chamber housing and a gas chamber piston slidably disposed within the gas chamber housing; the gas cavity piston is positioned on the left side of the gas cavity shell, the right side of the gas cavity shell is provided with an inflation valve core, and a plug is arranged at a core opening of the inflation valve core.

Furthermore, the right end of the oil cavity shell and the left end of the gas cavity shell are connected together through threads.

Furthermore, an O-shaped sealing ring I is arranged at the joint of the outer side walls of the oil inlet and the oil outlet of the oil cavity shell.

Furthermore, check rings and star-shaped sealing rings are arranged between the oil cavity shell and the oil cavity piston and between the gas cavity shell and the gas cavity piston.

Furthermore, an O-shaped sealing ring III is arranged between the gas cavity shell and the valve core of the inflation valve.

Furthermore, an O-shaped sealing ring II is arranged between the valve core of the inflation valve and the plug.

Furthermore, grooves for placing the check ring and the star-shaped sealing ring are formed in the outer side walls of the oil cavity piston and the gas cavity piston.

Furthermore, the first O-shaped sealing ring, the second O-shaped sealing ring and the third O-shaped sealing ring are all rubber sealing rings.

Furthermore, the right end of the oil cavity shell is provided with internal threads.

Furthermore, the left end of the gas cavity shell is provided with an external thread.

Compared with the prior art, the invention has the beneficial technical effects that:

the double-piston split type energy accumulator device divides an energy accumulator cavity into an independent gas cavity and an oil cavity, so that gas and liquid are separated, and the compression and expansion of the gas are utilized to store and release hydraulic energy. Compressed gas enters the gas cavity from the valve core of the charging valve through the gas inlet, and hydraulic oil enters the oil cavity from the oil inlet and the oil outlet. The gas cavity piston and the oil cavity piston respectively move together in the gas cavity shell and the oil cavity shell along with the rising or falling of the oil pressure in the oil cavity. When the gas cavity piston and the oil cavity piston move towards the oil cavity together, the energy of the compressed gas is released; when the gas cavity piston and the oil cavity piston move towards the gas cavity together, the compressed gas stores energy, the gas cavity piston and the oil cavity piston are always attached under the action of pressure, the gas cavity piston moves in the gas cavity shell, and the oil cavity piston moves in the oil cavity shell. The invention adopts the independent split structure of the gas cavity and the oil cavity: the double-piston structure of the gas cavity piston and the oil cavity piston effectively avoids gas-liquid mixing caused by abrasion of a sealing element in the working process of the piston, influences the working stability of the system and even fails; if the danger of gas leakage occurs, gas leaks from the connecting screw thread of the split gas cavity and the oil cavity. In a word, split type gas chamber and fluid chamber design have reduced the requirement of piston installation to the axiality, have reduced the casing processing degree of difficulty, and the device has effectively improved the sealing reliability of energy storage ware, and simple structure, operational reliability height, easy installation, easy maintenance, long service life.

Drawings

The invention is further described in the following description with reference to the drawings.

FIG. 1 is a schematic structural view of a split dual-piston accumulator apparatus according to the present invention;

FIG. 2 is a schematic diagram of the oil chamber assembly of the present invention;

FIG. 3 is a schematic diagram of the gas chamber assembly of the present invention;

description of reference numerals: 1. a first O-shaped sealing ring; 2. an oil cavity housing; 3. a star-shaped sealing ring; 4. a retainer ring; 5. an oil chamber piston; 6. a gas chamber piston; 7. a gas chamber housing; 8. a valve core of an inflation valve; 9. blocking; 10. an O-shaped sealing ring II; 11. and an O-shaped sealing ring III.

Detailed Description

As shown in fig. 1 to 3, the double-cylinder piston split type intermediate exhaust piston accumulator device includes an oil chamber and a gas chamber connected with the oil chamber, the oil chamber and the gas chamber are of an independent separation structure, so that gas and liquid are separated, and the compression and expansion of the gas are utilized to store and release hydraulic energy.

The fluid chamber includes that fluid chamber casing 2 and slidable install fluid chamber piston 5 in the fluid chamber casing 2, install retaining ring 4 and star type sealing washer 3 between fluid chamber casing 2 and the fluid chamber piston 5, guarantee the canned type in the fluid chamber. The oil cavity piston 5 is located on the right side of the oil cavity shell 2, an oil inlet and an oil outlet are formed in the left end of the oil cavity shell 2, and oil enters and exits from the oil inlet and the oil outlet to realize oil pressure adjustment. O-shaped sealing rings 1 are installed at the outer side wall interface of the oil inlet and the outer side wall interface of the oil outlet of the oil cavity shell 2, so that oil is guaranteed not to leak outside in and out, waste is reduced, and the utilization rate and the sealing performance are improved.

The gas cavity comprises a gas cavity shell 7 and a gas cavity piston 6 which is slidably arranged in the gas cavity shell 7, a check ring 4 and a star-shaped sealing ring 3 are arranged between the gas cavity shell 7 and the gas cavity piston 6, and the sealing type in the gas cavity is ensured under the same action. The gas cavity piston 6 is positioned on the left side of the gas cavity shell 7, the gas charging valve core 8 is installed on the right side of the gas cavity shell 7, and the plug 9 is connected to the core opening of the gas charging valve core 8 through threads. And a third O-shaped sealing ring 11 is arranged between the gas cavity shell 7 and the inflation valve core 8, a second O-shaped sealing ring 10 is arranged between the inflation valve core 8 and the plug 9, and the O-shaped sealing rings are used for improving the sealing performance.

The right end of the oil cavity shell 2 is provided with internal threads, and the left end of the gas cavity shell 7 is provided with external threads. The right end of the oil cavity shell 2 and the left end of the gas cavity shell 7 are connected together through threads to form an independent integral body, and installation is facilitated.

The outer side walls of the oil cavity piston 5 and the gas cavity piston 6 are provided with grooves for placing the check ring 4 and the star-shaped sealing ring 3.

The O-shaped sealing ring I1, the O-shaped sealing ring II 10 and the O-shaped sealing ring III 11 are all rubber sealing rings.

The action process of the invention is as follows:

firstly, compressed gas enters a gas cavity through a gas inlet by a valve core 8 of an inflation valve, hydraulic oil enters an oil cavity through an oil inlet and an oil outlet, and a gas cavity piston 6 and an oil cavity piston 5 respectively move together in a gas cavity shell 7 and an oil cavity shell 2 along with the rise or fall of the oil pressure in the oil cavity. When the gas cavity piston 6 and the oil cavity piston 5 move towards the oil cavity together, the energy of the compressed gas is released; the compressed gas stores energy as the gas chamber piston 6 and the oil chamber piston 5 move together towards the gas chamber. In the process, the gas cavity piston 6 and the oil cavity piston 5 are always attached under the action of pressure, the gas cavity piston 6 is kept to move in the gas cavity shell 7, and the oil cavity piston 5 is kept to move in the oil cavity shell 2. The process can effectively avoid the phenomena that the gas and the liquid are mixed, the working stability of the system is influenced and even the system fails after the sealing element is abraded in the working process of the piston; if the danger of gas leakage occurs, gas leaks from the connecting threads of the split gas cavity and the oil cavity, so that the use safety and the service life of the device are ensured.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention are intended to fall within the scope of the protection defined by the claims of the present invention.