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CN103527530B - A kind of piston type self pressure complement hydraulic accumulator for servo mechanism - Google Patents

A kind of piston type self pressure complement hydraulic accumulator for servo mechanism Download PDF

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CN103527530B
CN103527530B CN201210231177.3A CN201210231177A CN103527530B CN 103527530 B CN103527530 B CN 103527530B CN 201210231177 A CN201210231177 A CN 201210231177A CN 103527530 B CN103527530 B CN 103527530B
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piston
accumulator
servo mechanism
pressure
type self
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CN103527530A (en
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何俊
赵守军
曲颖
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BEIJING EXPERIMENTAL PLANT
China Academy of Launch Vehicle Technology CALT
Beijing Research Institute of Precise Mechatronic Controls
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BEIJING EXPERIMENTAL PLANT
China Academy of Launch Vehicle Technology CALT
Beijing Research Institute of Precise Mechatronic Controls
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Abstract

本发明属于伺服机构技术领域,具体公开一种伺服机构用活塞式自补压液压蓄能器,它包括壳体,壳体的上部内设有小活塞,膜片式封头的一端嵌在小活塞内,膜片式封头的另一端位于壳体外,且膜片式封头的该端与高压气瓶的出气管的端部连接;壳体的内部设有大活塞,大活塞上端是气腔,大活塞下端是液压油腔。该蓄能器能够自行补压,无需单独为此供电和控制,大大简化了伺服机构的结构。

The invention belongs to the technical field of servo mechanisms, and specifically discloses a piston-type self-replenishment hydraulic accumulator for servo mechanisms, which includes a casing, a small piston is arranged in the upper part of the casing, and one end of a diaphragm-type head is embedded in the small Inside the piston, the other end of the diaphragm head is located outside the casing, and this end of the diaphragm head is connected to the end of the gas outlet pipe of the high-pressure gas cylinder; a large piston is arranged inside the casing, and the upper end of the large piston is a gas chamber, the lower end of the large piston is the hydraulic oil chamber. The accumulator can self-supplement pressure without the need for separate power supply and control, which greatly simplifies the structure of the servo mechanism.

Description

一种伺服机构用活塞式自补压液压蓄能器A piston-type self-pressurizing hydraulic accumulator for a servo mechanism

技术领域technical field

本发明属于伺服机构技术领域,具体涉及一种伺服机构用活塞式自补压蓄能器。The invention belongs to the technical field of servo mechanisms, and in particular relates to a piston-type self-replenishment pressure accumulator for servo mechanisms.

背景技术Background technique

伺服机构是飞行器控制的执行机构子系统的统称,电液伺服机构的蓄能器通常具有三种功能:吸收液压泵的高压脉动,为伺服机构提供峰值流量,为自增压油箱提供非工作时的增压压力。The servomechanism is the collective name of the actuator subsystems controlled by the aircraft. The accumulator of the electro-hydraulic servomechanism usually has three functions: absorbing the high-pressure pulsation of the hydraulic pump, providing peak flow for the servomechanism, and providing non-working time for the self-pressurized fuel tank. boost pressure.

某些飞行器对伺服机构有两种工况要求,先为低工况(小功率、长时间),后为高工况(大功率、短时间)。蓄能器的非工作充气压力、气腔容积等参数也需要按两种工况设计两组参数。通常低工况和高工况时的气腔容积保持不变,而充气压力设计为两组,低工况较低,高工况较高。因此,当低工况向高工况过渡时,需要对蓄能器进行补压。Some aircrafts have two working conditions requirements for the servo mechanism, the low working condition (low power, long time) first, and the high working condition (high power, short time). Parameters such as non-working inflation pressure and air chamber volume of the accumulator also need to design two sets of parameters according to the two working conditions. Usually, the volume of the air chamber remains the same under the low working condition and the high working condition, and the inflation pressure is designed into two groups, the low working condition is lower, and the high working condition is higher. Therefore, when the low working condition transitions to the high working condition, it is necessary to pressurize the accumulator.

目前蓄能器补压方式主要为电爆阀的开关控制。外接一个高压气瓶,当低工况到高工况过渡时,电爆阀打开,高压气瓶中的高压气体补充到蓄能器中。但一般情况下电爆阀结构较大,并且需要专门的供电和控制,增加了伺服机构系统的复杂性。At present, the accumulator pressure replenishment method is mainly the switch control of the electric explosion valve. A high-pressure gas cylinder is externally connected. When the low working condition transitions to the high working condition, the electric explosion valve opens, and the high-pressure gas in the high-pressure gas cylinder is replenished into the accumulator. However, in general, the electric explosion valve has a large structure and requires special power supply and control, which increases the complexity of the servo mechanism system.

发明内容Contents of the invention

本发明的目的在于提供一种伺服机构用活塞式自补压液压蓄能器,该蓄能器能够自行补压,无需单独为此供电和控制,大大简化了伺服机构的结构。The purpose of the present invention is to provide a piston-type self-replenishment hydraulic accumulator for a servomechanism. The accumulator can replenish pressure by itself without power supply and control separately, which greatly simplifies the structure of the servomechanism.

实现本发明目的的技术方案:一种伺服机构用活塞式自补压液压蓄能器,它包括壳体,壳体的上内部设有小活塞,膜片式封头的一端嵌在小活塞内,膜片式封头的另一端位于壳体外,且膜片式封头的所述另一端与高压气瓶的出气管的端部连接;壳体的部内设有大活塞,大活塞上端是气腔,大活塞下端是液压油腔。The technical solution to achieve the purpose of the present invention: a piston type self-replenishment hydraulic accumulator for servo mechanism, which includes a housing, a small piston is arranged inside the upper part of the housing, and one end of the diaphragm type head is embedded in the small piston , the other end of the diaphragm head is located outside the housing, and the other end of the diaphragm head is connected to the end of the outlet pipe of the high-pressure gas cylinder; a large piston is arranged inside the housing, and the upper end of the large piston is Air chamber, the lower end of the big piston is a hydraulic oil chamber.

所述的膜片式封头与高压气瓶的出气管之间设有导管。A conduit is provided between the diaphragm-type sealing head and the outlet pipe of the high-pressure gas cylinder.

所述的高压气瓶出气管的中部设有单向阀。A one-way valve is provided in the middle of the outlet pipe of the high-pressure gas cylinder.

本发明的有益技术效果在于:自补压式蓄能器采用活塞式蓄能器,补压气源仍采用高压气瓶。在活塞式蓄能器气腔上端设计一个活塞结构,活塞本身又是一个切割刀。而在与高压气瓶相连接处设计一个膜片式封头。低工况时,为蓄能器充较低的工作压力;在低工况向高工况过渡时,系统压力升高,蓄能器活塞向上运动,与切割刀接触,将膜片式封头切开,高压气瓶中的气体补充进来,转入高工况。本发明利用蓄能器活塞在低工况和高工况过渡时的运动切断膜片,对蓄能器进行自行补压,无需单独为此供电和控制,大大简化了伺服机构的结构。The beneficial technical effect of the present invention is that: the self-replenishing pressure accumulator adopts a piston type accumulator, and the pressure recharging gas source still adopts a high-pressure gas cylinder. A piston structure is designed at the upper end of the air chamber of the piston accumulator, and the piston itself is a cutting knife. And design a diaphragm type head at the connection with the high-pressure gas cylinder. When the working condition is low, the accumulator is charged with a lower working pressure; when the working condition is transitioned from low working condition to high working condition, the system pressure rises, the accumulator piston moves upwards, contacts with the cutting knife, and the diaphragm head After cutting, the gas in the high-pressure gas cylinder is replenished, and it is turned into a high working condition. The invention utilizes the movement of the accumulator piston to cut off the diaphragm when the low working condition and the high working condition are transitioned, and self-pressurizes the accumulator without power supply and control separately, which greatly simplifies the structure of the servo mechanism.

附图说明Description of drawings

图1是本发明所提供一种伺服机构用活塞式自补压液压蓄能器的结构示意图。Fig. 1 is a schematic structural diagram of a piston-type self-recharging hydraulic accumulator for a servo mechanism provided by the present invention.

图中:1.大活塞,2.壳体,3.小活塞,4.膜片式封头,5.高压气瓶,6.单向阀,7.导管,A.气腔,B.液压油腔。In the figure: 1. Big piston, 2. Shell, 3. Small piston, 4. Diaphragm head, 5. High pressure cylinder, 6. One-way valve, 7. Conduit, A. Air cavity, B. Hydraulic pressure oil cavity.

具体实施方式Detailed ways

下面结合附图和实施例对本发明作进一步详细说明。The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

如图1所示,本发明所提供的一种伺服机构用活塞式自补压液压蓄能器,该蓄能器是活塞式蓄能器,该蓄能器包括壳体2,壳体2内部为空心圆柱形腔体,该腔体由直径较小的上腔体和直径较大的下腔体组成。壳体2的上腔体内设有小活塞3,小活塞3是一个切割刀,膜片式封头4的一端嵌入小活塞3的刀口内。膜片式封头4贯穿壳体2,且两者之间通过密封圈密封。膜片式封头4的另一端位于壳体2外,且膜片式封头4的该端与导管7的一端密封焊接,导管7的另一端与高压气瓶5的出气管的端部密封焊接,高压气瓶5出气管的中部设有单向阀6。As shown in Fig. 1, a piston-type self-pressurizing hydraulic accumulator for a servo mechanism provided by the present invention is a piston-type accumulator, and the accumulator includes a housing 2, and the interior of the housing 2 It is a hollow cylindrical cavity, which is composed of an upper cavity with a smaller diameter and a lower cavity with a larger diameter. A small piston 3 is arranged in the upper chamber of the housing 2 , and the small piston 3 is a cutting knife, and one end of the diaphragm type head 4 is embedded in the knife edge of the small piston 3 . The membrane head 4 runs through the housing 2 and is sealed by a sealing ring. The other end of the diaphragm head 4 is located outside the housing 2, and this end of the diaphragm head 4 is sealed and welded to one end of the conduit 7, and the other end of the conduit 7 is sealed to the end of the outlet pipe of the high-pressure gas cylinder 5 Welding, the middle part of high-pressure cylinder 5 outlet pipes is provided with check valve 6.

壳体2的下腔体中部内设有大活塞1,大活塞1上端是气腔A,大活塞1下端是液压油腔B。The middle part of the lower chamber of the housing 2 is provided with a large piston 1, the upper end of the large piston 1 is an air chamber A, and the lower end of the large piston 1 is a hydraulic oil chamber B.

下面结合图1描述本发明所提供一种伺服机构用活塞式自补压液压蓄能器的工作原理:伺服机构工作包括两个工作阶段:低工况,此时系统压力较低;高工况,此时系统压力较高。在低工况向高工况过渡时,伺服机构液压系统压力升高,即液压油腔B内的油压增高,使该蓄能器的活塞1向上运动压缩气腔A,气腔A内的压缩气体压力随着活塞1向上运动而增大,不断压缩气体的大活塞撞击小活塞3将膜片式封头4切断。随着活塞1向上运动不断压缩气腔A,小活塞3携带嵌在其刀口内的被切断的膜片式封头4的部分向上运动,直到卡在位于壳体2顶部的锯齿锥槽内。膜片式封头4被切断后,打开单向阀6,使得高压气瓶5中的高压气体通过导管7进入蓄能器气腔A,使蓄能器气腔A压力增大,推动蓄能器活塞1向下运动,从而使伺服机构达到高压工况。在低工况工作阶段,活塞1向上运动到最大位置时也不会与小活塞3接触。The working principle of a piston type self-replenishment hydraulic accumulator for a servo mechanism provided by the present invention is described below in conjunction with Fig. 1: the work of the servo mechanism includes two working stages: low working condition, the system pressure is low at this time; high working condition , the system pressure is high at this time. When the low working condition transitions to the high working condition, the hydraulic system pressure of the servo mechanism increases, that is, the oil pressure in the hydraulic oil chamber B increases, so that the piston 1 of the accumulator moves upward to compress the air chamber A, and the oil in the air chamber A The pressure of the compressed gas increases with the upward movement of the piston 1, and the large piston that continuously compresses the gas hits the small piston 3 to cut off the diaphragm head 4. As the piston 1 moves upward and continuously compresses the air chamber A, the small piston 3 moves upward with the cut-off diaphragm head 4 embedded in its knife edge until it is stuck in the serrated tapered groove on the top of the housing 2 . After the diaphragm head 4 is cut off, the one-way valve 6 is opened, so that the high-pressure gas in the high-pressure gas cylinder 5 enters the accumulator air cavity A through the conduit 7, so that the pressure of the accumulator air cavity A increases, and the energy storage is promoted. The piston 1 moves downwards, so that the servo mechanism reaches a high pressure condition. In the working phase of low working conditions, the piston 1 will not contact the small piston 3 when it moves upwards to the maximum position.

上面结合附图和实施例对本发明作了详细说明,但是本发明并不限于上述实施例,在本领域普通技术人员所具备的知识范围内,还可以在不脱离本发明宗旨的前提下作出各种变化。本发明中未作详细描述的内容均可以采用现有技术。The present invention has been described in detail above in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to the above-mentioned embodiments, and can also be made without departing from the gist of the present invention within the scope of knowledge possessed by those of ordinary skill in the art. kind of change. The content that is not described in detail in the present invention can adopt the prior art.

Claims (3)

1. a piston type self pressure complement hydraulic accumulator for servo mechanism, it is characterized in that: it comprises housing (2), small piston (3) is provided with in the top of housing (2), one end of diaphragm type end socket (4) is embedded in small piston (3), the other end of diaphragm type end socket (4) is positioned at housing (2) outward, and the described the other end of diaphragm type end socket (4) is connected with the end of the steam outlet pipe of gas cylinder (5); The inside of housing (2) is provided with large piston (1), and large piston (1) upper end is air cavity (A), and large piston (1) lower end is hydraulic fluid chamber (B).
2. a kind of piston type self pressure complement hydraulic accumulator for servo mechanism according to claim 1, is characterized in that: be provided with conduit (7) between described diaphragm type end socket (4) and the steam outlet pipe of gas cylinder (5).
3. a kind of piston type self pressure complement hydraulic accumulator for servo mechanism according to claim 1 and 2, is characterized in that: the middle part of described gas cylinder (5) steam outlet pipe is provided with one-way valve (6).
CN201210231177.3A 2012-07-04 2012-07-04 A kind of piston type self pressure complement hydraulic accumulator for servo mechanism Active CN103527530B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10245714B2 (en) * 2015-11-13 2019-04-02 Caterpillar Inc. Hydraulic buffer with fast startup
CN111075782B (en) * 2019-12-25 2022-04-22 北京空间机电研究所 Distributed modular dual-redundancy integrated electro-hydraulic servo driving system and method

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JPS58140305U (en) * 1982-03-18 1983-09-21 杉村 宣行 Piston lubrication device for piston type accumulator
JPH0392601A (en) * 1989-09-05 1991-04-17 Showa Mfg Co Ltd Stroke detecting mechanism for accumulator
JPH0626721Y2 (en) * 1988-04-04 1994-07-20 エヌオーケー株式会社 accumulator
CN201401378Y (en) * 2009-05-13 2010-02-10 王祖林 Gas filled joint of energy accumulator
CN202194870U (en) * 2011-06-28 2012-04-18 四川金星石油化工机械设备有限公司 Piston type energy accumulator

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RU2382913C1 (en) * 2008-09-01 2010-02-27 Александр Анатольевич Строганов Hydropneumatic accumulator with soft cellular filler

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JPS58140305U (en) * 1982-03-18 1983-09-21 杉村 宣行 Piston lubrication device for piston type accumulator
JPH0626721Y2 (en) * 1988-04-04 1994-07-20 エヌオーケー株式会社 accumulator
JPH0392601A (en) * 1989-09-05 1991-04-17 Showa Mfg Co Ltd Stroke detecting mechanism for accumulator
CN201401378Y (en) * 2009-05-13 2010-02-10 王祖林 Gas filled joint of energy accumulator
CN202194870U (en) * 2011-06-28 2012-04-18 四川金星石油化工机械设备有限公司 Piston type energy accumulator

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