CN1865666B - Rapid cut-off valve for regenerative extraction steam pipeline of steam turbine - Google Patents
Rapid cut-off valve for regenerative extraction steam pipeline of steam turbine Download PDFInfo
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- CN1865666B CN1865666B CN2005100464420A CN200510046442A CN1865666B CN 1865666 B CN1865666 B CN 1865666B CN 2005100464420 A CN2005100464420 A CN 2005100464420A CN 200510046442 A CN200510046442 A CN 200510046442A CN 1865666 B CN1865666 B CN 1865666B
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Abstract
本发明提供了一种汽轮机回热抽汽管道快速关断阀，所要解决的技术问题是：液压式执行器需要外设液压站，使整个执行器体积增大，而且还需要对液压站进行维护，介质水易腐蚀管线、生锈，易造成卡涩，影响系统的可靠性。本发明的要点是：它有双出杆液压缸、传动机构和阀门，集成型动力源集成式固定在双出杆液压缸上，电磁换向阀集成式固定在双出杆液压缸上，传动机构为齿轮与齿条啮合，齿条的一端固定在液压缸的活塞上，另一端与弹簧连接，阀门轴与齿轮同轴。本发明的积极效果是：它自带油源，设备之间为无管线连接，整个设备结构紧凑、体积小、重量轻，易维护；它为闭式系统，无污染，无生锈，控制灵敏可靠，响应速度快。
The invention provides a quick shut-off valve for steam turbine heat extraction pipeline. The technical problem to be solved is: the hydraulic actuator needs an external hydraulic station, which increases the volume of the entire actuator, and also requires maintenance of the hydraulic station. , The medium water is easy to corrode the pipeline, rust, and easily cause jamming, which affects the reliability of the system. The gist of the present invention is that it has a double-rod hydraulic cylinder, a transmission mechanism and a valve, the integrated power source is integrally fixed on the double-rod hydraulic cylinder, the electromagnetic reversing valve is integrally fixed on the double-rod hydraulic cylinder, and The mechanism is gear and rack meshing, one end of the rack is fixed on the piston of the hydraulic cylinder, the other end is connected with the spring, and the valve shaft is coaxial with the gear. The positive effects of the invention are: it has its own oil source, there is no pipeline connection between the equipment, the whole equipment has compact structure, small volume, light weight, and easy maintenance; it is a closed system, no pollution, no rust, and sensitive control Reliable and responsive.
Description
技术领域technical field
本发明涉及控制流体流量和压力的一种快速关断阀门，特别是电厂汽轮机组回热抽汽管上使用的快速关断阀门，它可有效地防止回热抽汽管道蒸汽倒流引发的设备故障。The invention relates to a fast shut-off valve for controlling fluid flow and pressure, especially a quick shut-off valve used on the steam recovery pipe of a steam turbine unit in a power plant, which can effectively prevent equipment failure caused by steam backflow in the steam turbine set .
背景技术Background technique
管道里使用的阀门是用来控制管道内流体流量和压力，驱动并控制阀门运行的装置叫执行器。汽轮机回热抽汽管道快速关断阀系统中的执行器需要输出大的力矩，其工作方式多采用水压式，即以水为介质通过液压缸给弹簧贮能，当需要快速动作时，通过弹簧瞬间释放能量，驱动阀门开或闭。由于该系统采用水源，存在以下缺陷：1、它需要外设液压站，系统庞大，维护困难；2、水易腐蚀管线、生锈，易造成卡涩，影响系统的可靠性。The valve used in the pipeline is used to control the flow and pressure of the fluid in the pipeline, and the device that drives and controls the operation of the valve is called an actuator. The actuator in the quick shut-off valve system of the steam turbine regenerative steam extraction pipeline needs to output a large torque, and its working method mostly adopts the hydraulic type, that is, the water is used as the medium to store energy for the spring through the hydraulic cylinder. The spring releases energy instantaneously, actuating the valve to open or close. Because the system uses water source, it has the following defects: 1. It needs an external hydraulic station, which is a huge system and difficult to maintain; 2. Water is easy to corrode the pipeline, rust, and easily cause jamming, which affects the reliability of the system.
发明内容Contents of the invention
本发明的目的在于提供一种不需要外设液压站的、集成型可实现快速动作快速关断阀。The purpose of the present invention is to provide an integrated quick-acting quick shut-off valve that does not require an external hydraulic station.
美国专利45,431,182；54,766,728；74,969,163；84,625,513；94,557,180提供了一种集成型动力源，它是由伺服电机、步进电机、双向液压泵、液压控制阀等组成，它可向外提供一定压力和流量的动力油。它具有以下特点：1、自身带封闭油源；2、可输出较大的力矩；3、具有保位功能，在失电情况下根据需要可设定为保位；4、具有快速保护功能。本发明正是利用集成型动力源这些特点和作用，使它取代上述系统中的外设液压站成为可能。U.S. Patent No. 45,431,182; 54,766,728; 74,969,163; 84,625,513; 94,557,180 provides an integrated power source, which is composed of a servo motor, a stepping motor, a bidirectional hydraulic pump, a hydraulic control valve, etc., which can provide a certain pressure and flow to the outside motor oil. It has the following characteristics: 1. It has a closed oil source; 2. It can output a large torque; 3. It has a position-holding function, which can be set to maintain position according to the need in the case of power failure; 4. It has a quick protection function. The present invention utilizes these characteristics and functions of the integrated power source to make it possible to replace the peripheral hydraulic station in the above-mentioned system.
本发明的目的是这样实现的：它有双出杆液压缸、传动机构和阀门，其特征是：集成型动力源集成式固定在双出杆液压缸上，即动力源的两个油口与双出杆液压缸的两个油口对接，电磁换向阀集成式固定在双出杆液压缸上，即电磁阀的两个油口与双出杆液压缸的两个油口对接，传动机构为齿轮与齿条啮合，齿条的一端固定在液压缸的活塞上，另一端与弹簧连接，阀门轴与齿轮同轴。The purpose of the present invention is achieved in this way: it has a double-rod hydraulic cylinder, a transmission mechanism and a valve, and is characterized in that: the integrated power source is integrated and fixed on the double-rod hydraulic cylinder, that is, the two oil ports of the power source and the The two oil ports of the double-rod hydraulic cylinder are connected, and the electromagnetic reversing valve is integrated and fixed on the double-rod hydraulic cylinder, that is, the two oil ports of the solenoid valve are connected with the two oil ports of the double-rod hydraulic cylinder, and the transmission mechanism The gear and the rack are meshed, one end of the rack is fixed on the piston of the hydraulic cylinder, the other end is connected with the spring, and the valve shaft is coaxial with the gear.
平时，电磁换向阀不带电，集成型动力源中的电机驱动油泵产生的动力油驱动液压缸里的活塞移动，进而压缩弹簧，为弹簧贮能。当需要阀门快速开启、关闭时，电磁换向阀带电，接通液压缸两腔，齿条在弹簧的作用下快速移动，进而驱动阀门快速闭合或开启。Normally, the electromagnetic reversing valve is not charged, and the power oil generated by the motor-driven oil pump in the integrated power source drives the piston in the hydraulic cylinder to move, and then compresses the spring to store energy for the spring. When the valve needs to be opened and closed quickly, the electromagnetic reversing valve is electrified to connect the two chambers of the hydraulic cylinder, and the rack moves quickly under the action of the spring, thereby driving the valve to close or open quickly.
本发明与现有技术方案相比，其特点是：Compared with the prior art scheme, the present invention is characterized in that:
1、它自带油源，设备之间为无管线连接，整个设备结构紧凑、体积小、重量轻，易维护；1. It has its own oil source, and there is no pipeline connection between the equipment. The whole equipment is compact in structure, small in size, light in weight, and easy to maintain;
2、它为闭式系统，无污染，无生锈，控制灵敏可靠。2. It is a closed system, no pollution, no rust, sensitive and reliable control.
附图说明Description of drawings
下面结合附图进一步说明本发明。Further illustrate the present invention below in conjunction with accompanying drawing.
附图是本发明的液压原理示意图。Accompanying drawing is the hydraulic principle schematic diagram of the present invention.
具体实施方式Detailed ways
它有集成型动力源1、双出杆液压缸2、传动机构和阀门，动力源1集成式固定在双出杆液压缸上，即动力源1的两个油口与双出杆液压缸2的两个油口对接C、D，电磁换向阀3集成式固定在双出杆液压缸上，即电磁阀3的两个油口与双出杆液压缸的两个油口对接A、B，传动机构为齿轮6与齿条4啮合，齿条的一端固定在液压缸2的活塞2.1上，另一端与弹簧5连接，阀门轴与齿轮6同轴。It has an integrated
平时，电磁换向阀不带电，集成型动力源中的电机驱动油泵产生的动力油驱动液压缸里的活塞移动，进而压缩弹簧，为弹簧贮能。当需要阀门快速开启、关闭时，电磁换向阀带电，接通液压缸两腔，齿条在弹簧的作用下快速移动，进而驱动阀门快速闭合或开启。Normally, the electromagnetic reversing valve is not charged, and the power oil generated by the motor-driven oil pump in the integrated power source drives the piston in the hydraulic cylinder to move, and then compresses the spring to store energy for the spring. When the valve needs to be opened and closed quickly, the electromagnetic reversing valve is electrified to connect the two chambers of the hydraulic cylinder, and the rack moves quickly under the action of the spring, thereby driving the valve to close or open quickly.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100464420A CN1865666B (en) | 2005-05-17 | 2005-05-17 | Rapid cut-off valve for regenerative extraction steam pipeline of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100464420A CN1865666B (en) | 2005-05-17 | 2005-05-17 | Rapid cut-off valve for regenerative extraction steam pipeline of steam turbine |
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| Publication Number | Publication Date |
|---|---|
| CN1865666A CN1865666A (en) | 2006-11-22 |
| CN1865666B true CN1865666B (en) | 2011-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2005100464420A Expired - Lifetime CN1865666B (en) | 2005-05-17 | 2005-05-17 | Rapid cut-off valve for regenerative extraction steam pipeline of steam turbine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2691700C2 (en) * | 2015-04-03 | 2019-06-17 | 4Мс | Valve actuator |
| CN108338313A (en) * | 2018-04-27 | 2018-07-31 | 佛山市甄睿智能科技有限公司 | A kind of food pretreatment unit with cooking function |
| CN109653908A (en) * | 2018-12-07 | 2019-04-19 | 安徽江淮汽车集团股份有限公司 | A kind of electromagnetic drive type EGR valve |
| CN109442050B (en) * | 2018-12-27 | 2021-02-12 | 湖州师范学院 | Shutter type adjusting mechanism |
| CN109505994B (en) * | 2018-12-27 | 2021-02-26 | 湖州师范学院 | An intelligent control shutter type adjusting mechanism |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2531185Y (en) * | 2002-04-09 | 2003-01-15 | 沈阳东北电力调节技术研究所 | Integrated electrohydraulic control quick-shutting off valve |
| CN2596018Y (en) * | 2002-12-27 | 2003-12-31 | 沈阳东北电力调节技术研究所 | Integration type actuator steam turbine electrohydaulic control system |
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- 2005-05-17 CN CN2005100464420A patent/CN1865666B/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2531185Y (en) * | 2002-04-09 | 2003-01-15 | 沈阳东北电力调节技术研究所 | Integrated electrohydraulic control quick-shutting off valve |
| CN2596018Y (en) * | 2002-12-27 | 2003-12-31 | 沈阳东北电力调节技术研究所 | Integration type actuator steam turbine electrohydaulic control system |
Non-Patent Citations (2)
| Title |
|---|
| 郑学明 等.汽轮机液调系统的一种新型电调改造方式.沈阳电力高等专科学校学报2 4.2000,2(4),1. |
| 郑学明 等.汽轮机液调系统的一种新型电调改造方式.沈阳电力高等专科学校学报2 4.2000,2(4),1. * |
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| CN1865666A (en) | 2006-11-22 |
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Application publication date: 20061122 Assignee: SHENYANG NAISI CONTROL TECHNOLOGY CO.,LTD. Assignor: SHENYANG NORTHEAST ELECTRIC POWER CONTROL Co.,Ltd. Contract record no.: X2023210000146 Denomination of invention: Quick shut-off valve for steam turbine reheat extraction pipeline Granted publication date: 20110914 License type: Common License Record date: 20230927 |
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