CN108061030A - A kind of clearance amount regulating system on reciprocating compressor - Google Patents
A kind of clearance amount regulating system on reciprocating compressor Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/16—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by adjusting the capacity of dead spaces of working chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
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Abstract
一种往复式压缩机上的余隙气量调节系统，包括控制系统、执行机构、漏气检测系统，所述执行机构包括油缸，油缸一端连接A控制口，油缸另一端经法兰连接气缸，法兰上设有B控制口，油缸内设有活塞，活塞位于油缸内的一端设有左活塞，左活塞与油缸一端的无杆腔为A控制腔，左活塞与油缸另一端的有杆腔为B控制腔，A控制腔连接A控制口，B控制腔连接B控制口，所述活塞位于气缸内的一端设有右活塞，右活塞与气缸内的一端有杆腔为排放腔，右活塞与气缸内的另一端无杆腔为余隙腔，所述左活塞上设有油缸密封圈，法兰与活塞连接处设有活塞杆密封圈，右活塞上设有气缸密封圈。解决了余隙气量调节中出现活塞、活塞杆断裂、撞缸、油气互串、油压系统漏油的问题，具有运行稳定、安全可靠的特点。
A clearance air volume adjustment system on a reciprocating compressor, including a control system, an actuator, and an air leakage detection system, the actuator includes an oil cylinder, one end of the oil cylinder is connected to the A control port, the other end of the oil cylinder is connected to the cylinder through a flange, and the flange There is a B control port on the top, a piston in the oil cylinder, and a left piston at the end of the piston in the oil cylinder. The rodless cavity at the end of the left piston and the oil cylinder is the A control cavity, and the rod cavity at the other end of the left piston and the oil cylinder is B. Control chamber, A control chamber is connected to A control port, B control chamber is connected to B control port, the end of the piston located in the cylinder is provided with a right piston, the end of the right piston and the cylinder has a rod chamber as the discharge chamber, the right piston and the cylinder The other end of the rodless chamber is a clearance chamber, the left piston is provided with a cylinder sealing ring, the connection between the flange and the piston is provided with a piston rod sealing ring, and the right piston is provided with a cylinder sealing ring. It solves the problems of piston and piston rod breakage, cylinder collision, oil and gas interlinking, and oil leakage in the hydraulic system in the adjustment of clearance air volume. It has the characteristics of stable operation, safety and reliability.
Description
技术领域technical field
本发明涉及一种往复式压缩机上的余隙气量调节系统。The invention relates to a clearance air volume adjustment system on a reciprocating compressor.
背景技术Background technique
工业用往复式压缩机的排气量一般是根据装置所需的最大容积流量或近期装置可能扩容所需的流量来选择，一般具有一定的富裕量，由于入口条件的改变(入口压力、温度等)、工艺流程或耗气设备的需求量改变，当耗气量小于压缩机的排气量时，便需要对压缩机进行气量调节，以使压缩机的排量适应耗气量的要求，保持管网中的压力，余隙气量调节系统是通过改变往复压缩机余隙容积的大小来调节压缩机的排气量称为气量余隙调节。余隙调节在改变压缩机气量的同时，对压缩机功率消耗、气缸内工质的热力过程、排气温度、机器振动、主要零部件受力都产生好处。该系统主要有液压油站（含控制系统）、执行机构、漏气检测系统组成。其适用于大型工业往复式压缩机。The displacement of industrial reciprocating compressors is generally selected according to the maximum volumetric flow rate required by the device or the flow rate required for possible expansion of the device in the near future, and generally has a certain margin. Due to changes in inlet conditions (inlet pressure, temperature, etc ), the technological process or the demand for gas-consuming equipment changes. When the gas consumption is less than the displacement of the compressor, it is necessary to adjust the gas volume of the compressor so that the displacement of the compressor can meet the requirements of the gas consumption and maintain the pipeline network The pressure in the clearance air volume adjustment system is to adjust the displacement of the compressor by changing the clearance volume of the reciprocating compressor, which is called air volume clearance adjustment. Clearance adjustment not only changes the air volume of the compressor, but also benefits the power consumption of the compressor, the thermal process of the working medium in the cylinder, the exhaust temperature, the vibration of the machine, and the stress on the main components. The system mainly consists of a hydraulic oil station (including a control system), an actuator, and an air leakage detection system. It is suitable for large industrial reciprocating compressors.
余隙气量调节系统是使用在工业大型往复式压缩机上的节能设备，主要有控制系统、执行机构、漏气检测系统组成，节能效果显著，可降低压缩机温度，减少压缩机的振动。由于对往复式压缩机的结构及工况了解不够，在执行机构的设计过程中不够完善，存在安全隐患，出现了断裂现象。Clearance air volume adjustment system is an energy-saving device used on industrial large-scale reciprocating compressors. It is mainly composed of a control system, an actuator, and an air leakage detection system. It has a significant energy-saving effect, can reduce the temperature of the compressor, and reduce the vibration of the compressor. Due to insufficient understanding of the structure and working conditions of the reciprocating compressor, the design process of the actuator is not perfect, there are potential safety hazards, and fractures have occurred.
1）容易造成活塞、活塞杆断裂1) It is easy to cause the piston and piston rod to break
余隙气量调节系统执行机构设计为气缸(容积缸)、油缸两部分组成，气缸分为前腔(无杆)容积控制腔、后腔(有杆)油缸控制腔，油缸分为长压腔 (有杆)、排放腔(无杆)，气缸后腔(有杆)控制腔在故障或系统压力升高时、气缸活塞向全关方向运动，这时油缸活塞走到全关极限时，此时油缸控制腔还在工作，使活塞杆无限拉伸、活塞与活塞杆严重剪切、造成油缸活塞、活塞杆断裂，控制腔在控制的时候会产生交合变化，长时间交合变化也容易产生部件疲劳导致断裂。The actuator of the clearance air volume adjustment system is designed to be composed of two parts: a cylinder (volume cylinder) and an oil cylinder. The cylinder is divided into a front chamber (without rod) volume control chamber and a rear chamber (with rod) oil cylinder control chamber. The oil cylinder is divided into a long pressure chamber ( Rod), discharge chamber (rodless), cylinder rear chamber (with rod) control chamber when the fault or system pressure rises, the cylinder piston moves to the fully closed direction, and when the cylinder piston reaches the fully closed limit, at this time The control chamber of the oil cylinder is still working, which makes the piston rod infinitely stretched, and the piston and the piston rod are severely sheared, causing the cylinder piston and piston rod to break. The control chamber will produce joint changes during control, and long-term joint changes are also prone to component fatigue. lead to breakage.
2）撞缸2) Hit the cylinder
如果活塞、活塞杆断裂，气缸活塞直接进入压缩机内造成撞缸。If the piston and piston rod are broken, the cylinder piston will directly enter the compressor and cause a cylinder collision.
3）油气互串3) Oil and gas interlinking
由于余隙气缸(容积腔)的结构方式是前面容积缸(无杆)、后面液压控制腔，如果活塞密封圈失效就会造成油气互串，控制腔是高压油很容易进入压缩机、造成油气互串，一旦油气互串就会酿成重大事故。Since the structure of the clearance cylinder (volume chamber) is the front volume cylinder (rodless) and the rear hydraulic control chamber, if the piston seal ring fails, it will cause oil and gas to intersect. The control chamber is high-pressure oil that can easily enter the compressor, causing oil and gas Once the oil and gas are connected to each other, it will lead to a major accident.
4）油压系统问题4) Oil pressure system problem
由于余隙气缸(容积缸)的结构方式是，前面容积腔后面液压控制腔，如果活塞密封圈失效就会造成控制油从排放道排出，油缸结构前腔是长通腔(有杆)、后缸是排放腔，如果密封圈失效长通腔控制油会进入排放腔，会造成油箱控制油大量减少，泄漏严重将导致液压系统无法工作。Due to the structure of the clearance cylinder (volume cylinder), the hydraulic control chamber behind the front volume chamber, if the piston seal ring fails, the control oil will be discharged from the discharge channel. The front chamber of the oil cylinder structure is a long through chamber (with a rod), and the rear The cylinder is the discharge chamber. If the sealing ring fails, the long through-cavity control oil will enter the discharge chamber, which will cause a large reduction of the control oil in the fuel tank, and serious leakage will cause the hydraulic system to fail to work.
发明内容Contents of the invention
本发明其目的就在于提供一种往复式压缩机上的余隙气量调节装置，解决了余隙气量调节中出现活塞、活塞杆断裂、撞缸、油气互串、油压系统漏油的问题，具有运行稳定、安全可靠的特点。The purpose of the present invention is to provide a clearance air volume adjustment device on a reciprocating compressor, which solves the problems of piston and piston rod breakage, cylinder collision, oil and gas interlinking, and oil leakage in the hydraulic system during the clearance air volume adjustment. Stable operation, safe and reliable features.
实现上述目的而采取的技术方案，一种往复式压缩机上的余隙气量调节装置，包括控制系统、执行机构、漏气检测系统，所述执行机构包括油缸，油缸一端连接A控制口，油缸另一端经法兰连接气缸，法兰上设有B控制口，油缸内设有活塞，活塞位于油缸内的一端设有左活塞，左活塞与油缸一端的无杆腔为A控制腔，左活塞与油缸另一端的有杆腔为B控制腔，A控制腔连接A控制口，B控制腔连接B控制口，所述活塞位于气缸内的一端设有右活塞，右活塞与气缸内的一端有杆腔为排放腔，右活塞与气缸内的另一端无杆腔为余隙腔，所述左活塞上设有油缸密封圈，法兰与活塞连接处设有活塞杆密封圈，活塞杆设为两级密封、中间设有油槽，右活塞上设有气缸密封圈。The technical solution adopted to achieve the above purpose is a clearance air volume adjustment device on a reciprocating compressor, including a control system, an actuator, and an air leakage detection system. The actuator includes an oil cylinder, one end of which is connected to the A control port, and the other One end is connected to the cylinder through a flange, the flange is provided with a B control port, the cylinder is provided with a piston, and the end of the piston inside the cylinder is provided with a left piston, and the rodless cavity at the end of the left piston and the cylinder is the A control cavity, and the left piston is connected to the cylinder. The rod chamber at the other end of the oil cylinder is the B control chamber, the A control chamber is connected to the A control port, and the B control chamber is connected to the B control port. The end of the piston located in the cylinder is provided with a right piston, and the right piston and the end of the cylinder have a rod The cavity is the discharge cavity, and the rodless cavity at the other end of the right piston and the cylinder is the clearance cavity. The left piston is provided with an oil cylinder sealing ring, and the connection between the flange and the piston is provided with a piston rod sealing ring, and the piston rod is set as two Stage seal, oil groove in the middle, and cylinder sealing ring on the right piston.
有益效果Beneficial effect
与现有技术相比本发明具有以下优点。Compared with the prior art, the present invention has the following advantages.
本发明把气缸、油缸独立分开不设常压腔，有油缸AB腔做控制腔，气缸(容积缸)只作为容积控制，把气缸后腔设为排放腔直排就地检测，在油缸(有杆腔)于排放腔密封处做两级密封，密封中间设有油槽直通油箱，如果油缸密封圈失效控制油只能回到油箱，做到了油气分离，有油缸做伺服调节，杜绝了因常压腔、控制腔在控制时所造成的交合现象，保证了由于疲劳导致的断裂。The present invention separates the air cylinder and the oil cylinder independently and does not set up a normal pressure chamber. The chamber AB of the oil cylinder is used as the control chamber, and the air cylinder (volume cylinder) is only used as the volume control. Rod chamber) is sealed in two stages at the seal of the discharge chamber. There is an oil tank in the middle of the seal that leads directly to the oil tank. If the oil cylinder seal ring fails, the oil can only be returned to the oil tank, so that the oil and gas are separated, and the oil cylinder is used for servo adjustment. The joint phenomenon caused by the cavity and the control cavity during control ensures the fracture caused by fatigue.
附图说明Description of drawings
下面结合附图对本发明作进一步详述。The present invention will be described in further detail below in conjunction with the accompanying drawings.
图1为本系统的结构示意图。Figure 1 is a schematic diagram of the structure of the system.
具体实施方式Detailed ways
一种往复式压缩机上的余隙气量调节系统，包括控制系统、执行机构、漏气检测系统，如图1所示，所述执行机构包括油缸1，油缸1一端连接A控制口2，油缸1另一端经法兰4连接气缸5，法兰4上设有B控制口7，油缸1内设有活塞3，活塞杆3位于油缸1内的一端设有左活塞6，左活塞6与油缸1一端的无杆腔为A控制腔8，左活塞6与油缸1另一端的有杆腔为B控制腔9，A控制腔8连接A控制口2，B控制腔9连接B控制口7，所述活塞杆3位于气缸5内的一端设有右活塞10，右活塞10与气缸5内的一端有杆腔为排放腔11，右活塞10与气缸5内的另一端无杆腔为余隙腔12，所述左活塞6上设有油缸密封圈13，法兰4与活塞杆3连接处设有活塞杆密封圈16，右活塞10上设有气缸密封圈15。A clearance air volume adjustment system on a reciprocating compressor, including a control system, an actuator, and an air leakage detection system, as shown in Figure 1, the actuator includes an oil cylinder 1, one end of the oil cylinder 1 is connected to the A control port 2, and the oil cylinder 1 The other end is connected to the cylinder 5 through the flange 4, the flange 4 is provided with the B control port 7, the cylinder 1 is provided with the piston 3, and the end of the piston rod 3 located in the cylinder 1 is provided with the left piston 6, and the left piston 6 is connected with the cylinder 1. The rodless cavity at one end is the A control cavity 8, the rod cavity at the other end of the left piston 6 and the oil cylinder 1 is the B control cavity 9, the A control cavity 8 is connected to the A control port 2, and the B control cavity 9 is connected to the B control port 7. One end of the piston rod 3 located in the cylinder 5 is provided with a right piston 10, the rod cavity at one end of the right piston 10 and the cylinder 5 is a discharge cavity 11, and the rodless cavity at the other end of the right piston 10 and the cylinder 5 is a clearance cavity 12. The left piston 6 is provided with a cylinder sealing ring 13, the connection between the flange 4 and the piston rod 3 is provided with a piston rod sealing ring 16, and the right piston 10 is provided with a cylinder sealing ring 15.
所述活塞杆密封圈16为两级密封，两级密封中间设有油槽14，油槽14直通油箱。The piston rod sealing ring 16 is a two-stage seal, and an oil groove 14 is arranged in the middle of the two-stage seal, and the oil groove 14 is directly connected to the oil tank.
余隙气量无极调节执行机构分为余隙油缸和余隙气缸，余隙缸筒和油缸缸筒采用锻件，余隙活塞和油缸活塞通过活塞杆相连，通过电液控制系统控制油缸活塞的位置来控制余隙缸的位置，从而调节余隙的大小。The actuator for the stepless adjustment of the clearance gas volume is divided into a clearance cylinder and a clearance cylinder. The clearance cylinder and the cylinder barrel are made of forgings. The clearance piston and the cylinder piston are connected by a piston rod, and the position of the cylinder piston is controlled by an electro-hydraulic control system. Control the position of the clearance cylinder to adjust the size of the clearance.
工作过程work process
余隙执行机构的控制口A、控制口B分别通过不锈钢油管连接到液压控制系统，当需要减小余隙时，远程DCS或在现场输出加载信号，控制系统通过电磁阀（或比例阀）调节。此时，液压油从控制口A进入油缸，另一端液压油从控制口B排出，油缸活塞从A--B向右运行，余隙减小。反之，当需要增大余隙时，远程DCS或在现场输出减载信号，控制系统通过电磁阀（或比例阀）调节。此时，液压油从控制口B进入油缸，另一端液压油从控制口A排出，油缸活塞从B--A向左运行，余隙增大。The control port A and control port B of the clearance actuator are respectively connected to the hydraulic control system through stainless steel oil pipes. When the clearance needs to be reduced, the remote DCS or the on-site output loading signal, the control system is adjusted through the solenoid valve (or proportional valve). . At this time, the hydraulic oil enters the oil cylinder from the control port A, and the hydraulic oil at the other end is discharged from the control port B, the piston of the oil cylinder moves from A--B to the right, and the clearance decreases. On the contrary, when it is necessary to increase the clearance, the remote DCS or on-site output load reduction signal, and the control system is adjusted through the solenoid valve (or proportional valve). At this time, the hydraulic oil enters the oil cylinder from the control port B, and the hydraulic oil at the other end is discharged from the control port A, and the piston of the oil cylinder moves from B--A to the left, and the clearance increases.
执行机构在控制腔B(有杆腔)9和排放腔11之间采用双级密封，密封中间设有油槽，通过不锈钢管连接到油箱，当控制腔B(有杆腔)9侧密封失效泄漏后，液压油通过排放口排放到油箱，防止油气混合。The actuator adopts a double-stage seal between the control chamber B (rod chamber) 9 and the discharge chamber 11. There is an oil tank in the middle of the seal, which is connected to the oil tank through a stainless steel pipe. When the seal on the side of the control chamber B (rod chamber) 9 fails to leak Finally, the hydraulic oil is discharged to the oil tank through the discharge port to prevent the mixing of oil and gas.
执行机构余隙缸排放腔11为气体泄漏排放腔，当余隙活塞10密封失效后，压缩机气体泄漏到排放腔11，再通过不锈钢管连接到泄漏检测系统，检测泄漏压力并提示报警。气体最后排放到装置的放空火炬管线或排污罐管线。The discharge chamber 11 of the actuator clearance cylinder is a gas leakage discharge chamber. When the seal of the clearance piston 10 fails, the compressor gas leaks into the discharge chamber 11, and then connects to the leakage detection system through a stainless steel pipe to detect the leakage pressure and prompt an alarm. The gas is finally vented to the vent flare line or blowdown tank line of the unit.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109882395A (en) * | 2019-04-22 | 2019-06-14 | 山东易阳石化节能装备有限公司 | A kind of pressure control gasbag-type clearance step-less adjustment executing agency and method |
| CN113389709A (en) * | 2021-07-19 | 2021-09-14 | 广东溢康通空气弹簧有限公司 | Linear motion two-stage compressor piston |
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2017
- 2017-12-12 CN CN201711318804.6A patent/CN108061030B/en active Active
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| DE102006007743A1 (en) * | 2006-02-20 | 2007-08-23 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Reciprocating compressor used in a braking system of a vehicle comprises working cylinders sealed from each other in the region of a piston rod by a seal in the form of an axial gap seal |
| CN201865889U (en) * | 2010-11-30 | 2011-06-15 | 赖梦超 | Clearance stepless adjustment actuator of reciprocating compressor |
| CN202628454U (en) * | 2012-06-15 | 2012-12-26 | 九江大安自控工程有限公司 | Air amount regulation system of reciprocating compressor |
| CN207892815U (en) * | 2017-12-12 | 2018-09-21 | 九江大安自控工程有限公司 | A kind of clearance air volume regulating device on reciprocating compressor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882395A (en) * | 2019-04-22 | 2019-06-14 | 山东易阳石化节能装备有限公司 | A kind of pressure control gasbag-type clearance step-less adjustment executing agency and method |
| CN109882395B (en) * | 2019-04-22 | 2024-03-22 | 山东易阳石化节能装备有限公司 | Pressure control air bag type clearance stepless adjustment executing mechanism and method |
| CN113389709A (en) * | 2021-07-19 | 2021-09-14 | 广东溢康通空气弹簧有限公司 | Linear motion two-stage compressor piston |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108061030B (en) | 2024-07-23 |
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Denomination of invention: A clearance gas volume adjustment system for a reciprocating compressor Granted publication date: 20240723 Pledgee: Agricultural Bank of China Limited Jiujiang Lianxi Branch Pledgor: Jiujiang Da'an Automatic Control Engineering Co.,Ltd. Registration number: Y2025980047958 |