CN104791554B - Gas spring formula vibration damping pipe clamp - Google Patents
Gas spring formula vibration damping pipe clamp Download PDFInfo
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- CN104791554B CN104791554B CN201510183677.8A CN201510183677A CN104791554B CN 104791554 B CN104791554 B CN 104791554B CN 201510183677 A CN201510183677 A CN 201510183677A CN 104791554 B CN104791554 B CN 104791554B
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- 238000013016 damping Methods 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims 2
- 239000002131 composite material Substances 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 6
- 230000009467 reduction Effects 0.000 abstract description 2
- 230000010349 pulsation Effects 0.000 description 6
- 239000011358 absorbing material Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 208000035389 Ring chromosome 6 syndrome Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/16—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe
- F16L3/20—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe allowing movement in transverse direction
- F16L3/205—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe allowing movement in transverse direction having supporting springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
- F16F15/0232—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means with at least one gas spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
- F16L3/10—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two members engaging the pipe, cable or protective tubing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
- F16L3/10—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two members engaging the pipe, cable or protective tubing
- F16L3/1091—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two members engaging the pipe, cable or protective tubing with two members, the two members being fixed to each other with fastening members on each side
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Supports For Pipes And Cables (AREA)
- Vibration Prevention Devices (AREA)
Abstract
一种气压弹簧式减振管夹，其主要是：上管夹体与活塞杆固定连接，该活塞杆上的活塞位于管夹上盖板的中心通孔下部，中心通孔下部与套在活塞杆上的油腔盖螺纹连接，橡胶隔膜周边设在中心螺孔和通孔相交的环面上，隔膜上面设有压力环，压力环上面设内六角旋钮，在管夹上盖板的中心通孔上开口设有充气阀，该管夹上盖板上还设有两个孔道的上开口，其一个孔道为进油孔道，该孔道的上开口上设有充液单向阀，该孔道的下端开口与隔膜和活塞之间油腔相连通；另一个孔道为排气孔道，该孔道的下开口则与油腔盖和活塞之间油腔相连通。本发明能实时地改变管夹夹紧力，实现高频柔性减振，有效地防止管夹松动和被动消除管道振动。
An air spring type damping pipe clamp, which mainly includes: the upper pipe clamp body is fixedly connected with the piston rod, the piston on the piston rod is located at the lower part of the central through hole of the upper cover plate of the pipe clamp, and the lower part of the central through hole is connected with the piston rod. The oil chamber cover on the rod is threaded, the rubber diaphragm is set on the ring surface where the central screw hole and the through hole intersect, the diaphragm is provided with a pressure ring, and the pressure ring is provided with an inner hexagonal knob. The upper opening of the hole is provided with an inflatable valve, and the upper cover of the pipe clamp is also provided with the upper opening of two channels, one of which is an oil inlet channel, and the upper opening of the channel is provided with a liquid filling check valve. The opening at the lower end communicates with the oil chamber between the diaphragm and the piston; the other hole is an exhaust hole, and the lower opening of the hole communicates with the oil chamber between the oil chamber cover and the piston. The invention can change the clamping force of the pipe clamp in real time, realize high-frequency flexible vibration reduction, effectively prevent the pipe clamp from loosening and passively eliminate pipeline vibration.
Description
技术领域technical field
本发明涉及一种液压管路的管夹。The invention relates to a pipe clip of a hydraulic pipeline.
背景技术Background technique
管道作为流体的一种运输方式和载体，广泛运用于石油、化工、给排水以及航空、航天、汽车等各个领域。在流体系统中，由于液压泵、水泵等泵源的结构特征、流体的可压缩性、以及控制阀频繁的开启或关闭液流通道，不可避免的造成流量脉动和冲击，流量脉动和冲击作用于管道后将引起管道的振动和噪声。当流量脉动频率与管道系统固有频率重叠时，管道振动会异常剧烈，即产生谐振，导致系统不能正常工作，产生噪声，甚至造成管道的破裂、介质泄漏、引发事故。此外，机械设备的振动通过机械系统传递到管路上而造成的危害，也是不可避免的。这些在大型管道系统中尤为明显。As a transportation mode and carrier of fluid, pipelines are widely used in various fields such as petroleum, chemical industry, water supply and drainage, aviation, aerospace, automobile and so on. In the fluid system, due to the structural characteristics of pump sources such as hydraulic pumps and water pumps, the compressibility of the fluid, and the frequent opening or closing of the control valve, the flow pulsation and impact are inevitably caused, and the flow pulsation and impact act on the After the pipeline will cause the vibration and noise of the pipeline. When the flow pulsation frequency overlaps with the natural frequency of the pipeline system, the pipeline vibration will be extremely severe, that is, resonance will occur, which will cause the system to malfunction, generate noise, and even cause pipeline rupture, medium leakage, and accidents. In addition, the damage caused by the vibration of mechanical equipment transmitted to the pipeline through the mechanical system is also inevitable. These are especially noticeable in large piping systems.
目前，控制管道振动主要分为主动控制和被动控制两种方式。由于主动控制系统需要引入外部动力源，系统设计较为复杂，且根据检测脉动或管道振动进行振动控制又常常有滞后，故大多采用被动控制方法。而被动控制主要有两种实现途径，一是削弱振动源的影响，通过修改动力源的结构参数去抑制其流量脉动或对机械振动源采用隔振措施，例如在液压泵出口加入蓄能器减小动力源输出的波动、在液压泵出口安装一段软管等方式；二是调整管道系统的阻抗，改变管道尺寸或管道布局，使管道系统固有频率远离激振频率。尽管被动控制很难在较大频宽范围内消振，但由于被动控制不需要外部提供能量，且结构简单，易于实现，可靠性高，故被广泛采用。At present, there are mainly two ways to control pipeline vibration: active control and passive control. Since the active control system needs to introduce an external power source, the system design is relatively complicated, and the vibration control based on the detection of pulsation or pipeline vibration often has a lag, so passive control methods are mostly used. There are mainly two ways to achieve passive control. One is to weaken the influence of the vibration source, by modifying the structural parameters of the power source to suppress its flow pulsation or adopting vibration isolation measures for the mechanical vibration source, such as adding an accumulator at the outlet of the hydraulic pump to reduce the vibration. Minimize the fluctuation of the power source output, install a section of hose at the outlet of the hydraulic pump, etc.; the second is to adjust the impedance of the pipeline system, change the pipeline size or pipeline layout, and keep the natural frequency of the pipeline system away from the excitation frequency. Although passive control is difficult to eliminate vibration in a large frequency range, passive control is widely used because it does not require external energy, has a simple structure, is easy to implement, and has high reliability.
管夹是管道振动被动控制必要的辅助元件，主要用于管道定位和固定，同时还起到吸收振动的作用。然而，目前常用的管夹消振是在管夹与管道的接触面添加一层或多层弹性材料，消振使用范围小，消振效果不明显，并且在实际的管道系统中，管夹是通过螺栓旋紧进行固定的，随着管夹在管道系统中长时间的工作，由于管道的振动，管夹的螺栓松动或者螺纹损坏都会使管夹的夹紧力减小，使管道的受力状态及管道的固有频率等都发生改变，从而降低系统的可靠性，易引发事故。Pipe clamps are necessary auxiliary components for passive control of pipeline vibration. They are mainly used for positioning and fixing pipelines, and also play a role in absorbing vibrations. However, the currently commonly used pipe clamps are used to add one or more layers of elastic materials to the contact surface between the pipe clamp and the pipe. It is fixed by bolt tightening. With the pipe clamp working in the pipeline system for a long time, due to the vibration of the pipeline, the loosening of the bolt of the pipe clamp or the damage of the thread will reduce the clamping force of the pipe clamp and make the pipe stress The state and the natural frequency of the pipeline will change, thereby reducing the reliability of the system and easily causing accidents.
发明内容Contents of the invention
本发明的目的在于提供一种能根据管道振动的变化，实时地改变夹紧力的气压弹簧式减振管夹。本发明主要是依靠气压弹簧式减振管夹气腔的压缩空气吸收管道振动，将管道振动消除。The object of the present invention is to provide an air spring damping pipe clamp which can change the clamping force in real time according to the change of pipeline vibration. The invention mainly relies on the compressed air in the air cavity of the air pressure spring type damping tube clamp to absorb the vibration of the pipeline and eliminate the vibration of the pipeline.
本发明是通过以下技术方案实现的：The present invention is achieved through the following technical solutions:
本发明主要包括：本发明主要包括：充气阀、充液单向阀、管夹上盖板、隔膜、活塞杆及活塞，油腔盖、上管夹体、下管夹体、管夹下盖板、管夹衬套及螺杆。其中，管夹下盖板上设有紧固件用的通孔，以便通过紧固件将管夹下盖板固定在固定面上。在管夹下盖板的通孔内侧设有两个相同的螺孔，最好每个螺孔的上开口上设有定位用凸台。在管夹下盖板上设有下管夹体，该下管夹体是在长方体基体上部设有开口向上的半圆柱槽，该半圆柱槽的对称面与长方体基体长度方向的中心面为同一个面。在下管夹体半圆柱槽内设有与其曲率半径相对应的由减振材料制成的管夹衬套。在下管夹体半圆柱槽两侧分别设有两个竖直的通孔，这两个通孔的中心线分别与管夹下盖板上的螺孔同中心线，最好在下管夹体下平面的螺孔外部设与管夹下盖板上凸台对应的凹槽，两者配合可方便装卸。在下管夹体上面设有与其匹配的上管夹体，该上管夹体是在长方体基体下部设有开口向下的半圆柱槽，该半圆柱槽的对称面与长方体基体长度方向的中心面为同一个面，在上管夹体半圆柱槽内设有与其曲率半径相对应的由减振材料制成的管夹衬套。在上管夹体半圆柱槽两侧分别设有两个竖直的通孔，这两个通孔的中心线分别与管夹下盖板上的螺孔同中心线。最好，上管夹体四个周边均设向上延伸的边沿，使上管夹体上端呈槽形。该上管夹体的边沿与管夹上盖板四个周边向下延伸的止口相对应。上管夹体上平面中部与活塞杆下端固定连接，该活塞杆上端的活塞位于管夹上盖板的中心通孔下部的大直径孔内，两者直径相匹配，最好两者之间设有密封圈。在中心通孔下部的大直径孔下开口端处设有螺纹，其与套在活塞杆上的油腔盖螺纹连接。最好管夹上盖板与油腔盖之间设有组合垫圈。管夹上盖板的小直径中心通孔上部为大于下部的螺孔，橡胶隔膜周边设在螺孔和通孔相交的环面上，隔膜上面设有对应的压力环，压力环上面设内六角旋钮，其外螺纹与小直径中心通孔上部的螺孔相对应。该隔膜将管夹上盖板的中心通孔分成两部分，隔膜下部为油腔，隔膜上部为气腔。在管夹上盖板的小直径中心通孔上开口设有充气阀，最好充气阀外面设有充气阀罩。该管夹上盖板上还设有两个孔道的上开口，其一个孔道为进油孔道，该孔道的上开口上设有充液单向阀，最好充液单向阀外面设有防尘壳，该孔道的下端开口与隔膜和活塞之间油腔相连通；另一个孔道为排气孔道，该孔道的下开口则与油腔盖和活塞之间油腔相连通，该孔道的上开口上设有螺纹，接排气管。上述的管夹上盖板上还分别设有两个竖直的通孔，这两个通孔的中心线分别与上管夹体上的通孔同中心线，这两个通孔中分别设有两根螺杆，它们由上至下分别穿过管夹上盖板、上管夹体及下管夹体，下端与管夹下盖板上的螺孔螺纹连接。The present invention mainly includes: the present invention mainly includes: inflation valve, liquid filling check valve, pipe clamp upper cover plate, diaphragm, piston rod and piston, oil chamber cover, upper pipe clamp body, lower pipe clamp body, pipe clamp lower cover Plate, clamp bushing and screw. Wherein, the lower cover plate of the pipe clamp is provided with through holes for fasteners, so that the lower cover plate of the pipe clamp can be fixed on the fixed surface through the fasteners. Two identical screw holes are arranged on the inner side of the through hole of the lower cover plate of the pipe clamp. Preferably, the upper opening of each screw hole is provided with a boss for positioning. A lower pipe clamp body is arranged on the lower cover plate of the pipe clamp. The lower pipe clamp body is provided with a semi-cylindrical groove with an upward opening on the upper part of the cuboid base body. one face. In the semi-cylindrical groove of the lower pipe clamp body, there is a pipe clamp bushing made of vibration-absorbing material corresponding to its curvature radius. Two vertical through holes are respectively arranged on both sides of the semi-cylindrical groove of the lower pipe clamp body. The outside of the plane screw hole is provided with a groove corresponding to the boss on the lower cover plate of the pipe clamp, and the cooperation of the two can facilitate loading and unloading. A matching upper pipe clamp is arranged on the lower pipe clamp body. The upper pipe clamp body is provided with a semi-cylindrical groove with an opening downward at the bottom of the cuboid base body. For the same surface, a pipe clamp bushing made of vibration-absorbing material corresponding to the radius of curvature is provided in the semi-cylindrical groove of the upper pipe clamp body. Two vertical through holes are respectively arranged on both sides of the semi-cylindrical groove of the upper pipe clamp body, and the centerlines of the two through holes are respectively concentric with the screw holes on the lower cover plate of the pipe clamp. Preferably, the four peripheral edges of the upper pipe clamp body are all provided with upwardly extending edges, so that the upper end of the upper pipe clamp body is groove-shaped. The edges of the upper pipe clamp body correspond to the four peripheral notches extending downwards on the upper cover plate of the pipe clamp. The middle part of the upper plane of the upper pipe clamp body is fixedly connected with the lower end of the piston rod. The piston at the upper end of the piston rod is located in the large-diameter hole below the center through hole of the upper cover plate of the pipe clamp. The diameters of the two match. There are sealing rings. A thread is provided at the lower opening end of the large-diameter hole at the lower part of the central through hole, which is threadedly connected with the oil chamber cover sleeved on the piston rod. Preferably, a combination gasket is arranged between the upper cover plate of the pipe clamp and the oil chamber cover. The upper part of the small-diameter central through hole of the upper cover of the pipe clamp is a screw hole larger than the lower part. The periphery of the rubber diaphragm is set on the ring surface where the screw hole and the through hole intersect. There is a corresponding pressure ring on the diaphragm and an inner hexagon on the pressure ring. A knob with an external thread corresponding to the screw hole in the upper part of the small diameter central through hole. The diaphragm divides the central through hole of the upper cover plate of the pipe clamp into two parts, the lower part of the diaphragm is an oil chamber, and the upper part of the diaphragm is an air chamber. An inflatable valve is arranged on the small-diameter central through hole of the upper cover plate of the pipe clip, preferably an inflatable valve cover is arranged outside the inflatable valve. The upper cover plate of the pipe clamp is also provided with the upper openings of two channels, one of which is an oil inlet channel, and the upper opening of the channel is provided with a liquid-filled one-way valve. Dust shell, the lower opening of the hole is connected with the oil chamber between the diaphragm and the piston; the other hole is the exhaust hole, the lower opening of the hole is connected with the oil chamber between the oil chamber cover and the piston, and the upper part of the hole is The opening is provided with a screw thread, which is connected to the exhaust pipe. The upper cover plate of the above-mentioned pipe clamp is also provided with two vertical through holes respectively, and the centerlines of the two through holes are respectively concentric with the through holes on the upper pipe clamp body. There are two screw rods, which respectively pass through the upper cover plate, the upper pipe clamp body and the lower pipe clamp body of the pipe clamp from top to bottom, and the lower ends are threadedly connected with the screw holes on the lower cover plate of the pipe clamp.
本发明与现有技术相比具有如下优点：Compared with the prior art, the present invention has the following advantages:
1、本发明的气腔与油腔通过隔膜隔开，与活塞杆及活塞组成减振装置，使得本发明所述的管夹可以明显减小振动对管道的影响。此外，管夹的上下衬套采用减振材料制成，对一定振动频率和幅值范围内的振动也有一定的缓冲作用。1. The air cavity and the oil cavity of the present invention are separated by a diaphragm, and form a vibration damping device with the piston rod and the piston, so that the pipe clamp described in the present invention can significantly reduce the impact of vibration on the pipeline. In addition, the upper and lower bushes of the pipe clamp are made of vibration-absorbing materials, which also have a certain buffering effect on vibrations within a certain vibration frequency and amplitude range.
2、由于本发明中所述的减振装置可以将引起固定螺栓松动或螺栓螺纹损坏的振动吸收，故可以防止管夹松动，延长管夹的使用寿命、降低系统的故障几率、提高系统的可靠性与寿命。2. Since the vibration damping device described in the present invention can absorb the vibration that causes the fixing bolts to loosen or the bolt threads to be damaged, it can prevent the pipe clamp from loosening, prolong the service life of the pipe clamp, reduce the failure probability of the system, and improve the reliability of the system. Sex and longevity.
附图说明Description of drawings
图1为本发明主视剖面示意简图。Fig. 1 is a schematic diagram of the front section of the present invention.
图2为图1中I的局部放大示意图。FIG. 2 is a partially enlarged schematic diagram of I in FIG. 1 .
图中：1、充气阀，2、防尘盖，3、充液单向阀，4、管夹上盖板，5、进油孔道，6、密封圈，7、活塞杆及活塞，8、油腔盖，9、上管夹体，10、下管夹体，11、管夹下盖板，12、下管夹体衬套，13、上管夹体衬套，14、组合垫圈，15、排气孔道，16、螺杆，17、隔膜，18、压力环，19、内六角旋钮。In the figure: 1. Inflatable valve, 2. Dustproof cover, 3. Fluid-filled one-way valve, 4. Upper cover plate of pipe clamp, 5. Oil inlet channel, 6. Sealing ring, 7. Piston rod and piston, 8. Oil chamber cover, 9. Upper pipe clamp body, 10. Lower pipe clamp body, 11. Lower pipe clamp cover plate, 12. Lower pipe clamp body bushing, 13. Upper pipe clamp body bushing, 14. Combined gasket, 15 , Exhaust channel, 16, screw rod, 17, diaphragm, 18, pressure ring, 19, inner hexagonal knob.
具体实施方式detailed description
以下将结合实施方式和附图对本发明作进一步的详细说明：The present invention will be described in further detail below in conjunction with embodiment and accompanying drawing:
在图1所示的气压弹簧式减振管夹的主视剖面示意简图中，管夹下盖板11上设有紧固件用的通孔。在管夹下盖板的通孔内侧设有两个相同的螺孔，每个螺孔的上开口上设有定位用凸台。在管夹下盖板上设有下管夹体10，该下管夹体是在长方体基体上部设有开口向上的半圆柱槽，该半圆柱槽的对称面与长方体基体长度方向的中心面为同一个面。在下管夹体半圆柱槽内设有与其曲率半径相对应的由减振材料制成的下管夹体衬套12。在下管夹体半圆柱槽两侧分别设有两个竖直的通孔，这两个通孔的中心线分别与管夹下盖板上的螺孔同中心线，在下管夹体下平面的螺孔外部设与管夹下盖板上凸台对应的凹槽。在下管夹体上面设有与其匹配的上管夹体9，该上管夹体是在长方体基体下部设有开口向下的半圆柱槽，该半圆柱槽的对称面与长方体基体长度方向的中心面为同一个面，在上管夹体半圆柱槽内设有与其曲率半径相对应的由减振材料制成的上管夹衬套13。在上管夹体半圆柱槽两侧分别设有两个竖直的通孔，这两个通孔的中心线分别与管夹下盖板上的螺孔同中心线。上管夹体体四个周边均设向上延伸的边沿，使上管夹体上端呈槽形。该上管夹体的边沿与管夹上盖板4四个周边向下延伸的止口相对应。上管夹体上平面中部与活塞杆7下端固定连接，该活塞杆上端的活塞位于管夹上盖板的中心通孔下部的大直径孔内，两者直径相匹配，两者之间设有密封圈6。在中心通孔下部的大直径孔下开口端处设有螺纹，其与套在活塞杆上的油腔盖8螺纹连接。管夹上盖板与油腔盖之间设有组合垫圈14。管夹上盖板的小直径中心通孔上部为大于下部的螺孔，橡胶隔膜17周边设在螺孔和通孔相交的环面上，隔膜上面设有对应的压力环18，压力环上面设内六角旋钮19，其外螺纹与小直径中心通孔上部的螺孔相对应，如图2所示。在管夹上盖板的小直径中心通孔上开口设有充气阀1，充气阀外面设有充气阀罩。该管夹上盖板上还设有两个孔道的上开口，其一个孔道为进油孔道5，该孔道的上开口上设有充液单向阀3，该充液单向阀外面设有防尘壳2，该孔道的下端开口与隔膜和活塞之间油腔相连通；另一个孔道为排气孔道15，该孔道的下开口则与油腔盖和活塞之间油腔相连通，该孔道的上开口上设有螺纹，接排气管。上述的管夹上盖板上还分别设有两个竖直的通孔，这两个通孔的中心线分别与上管夹体上的通孔同中心线，这两个通孔中分别设有两根螺杆16，它们由上至下分别穿过管夹上盖板、上管夹体及下管夹体，下端与管夹下盖板上的螺孔螺纹连接。In the schematic diagram of the front view of the gas spring damping pipe clamp shown in FIG. 1 , the lower cover plate 11 of the pipe clamp is provided with through holes for fasteners. Two identical screw holes are arranged inside the through hole of the lower cover plate of the pipe clamp, and a boss for positioning is arranged on the upper opening of each screw hole. A lower pipe clamp body 10 is arranged on the lower cover plate of the pipe clamp. The lower pipe clamp body is provided with an upward semi-cylindrical groove on the upper part of the rectangular parallelepiped substrate. the same face. In the semi-cylindrical groove of the lower pipe clamp body, there is a lower pipe clamp body bushing 12 made of vibration-absorbing material corresponding to its curvature radius. Two vertical through holes are respectively arranged on both sides of the semi-cylindrical groove of the lower pipe clamp body. A groove corresponding to the boss on the lower cover plate of the pipe clamp is provided outside the screw hole. The upper pipe clamp body 9 matched with it is arranged on the lower pipe clamp body, and the upper tube clamp body is provided with a semi-cylindrical groove with an opening downward at the bottom of the rectangular parallelepiped substrate. The surface is the same surface, and an upper pipe clamp bushing 13 made of vibration-absorbing material corresponding to the radius of curvature is arranged in the semi-cylindrical groove of the upper pipe clamp body. Two vertical through holes are respectively arranged on both sides of the semi-cylindrical groove of the upper pipe clamp body, and the centerlines of the two through holes are respectively concentric with the screw holes on the lower cover plate of the pipe clamp. Edges extending upwards are provided on the four peripheries of the upper pipe clamping body, so that the upper end of the upper pipe clamping body is groove-shaped. The edge of the upper pipe clamp body corresponds to the four peripheral notches extending downwards of the upper cover plate 4 of the pipe clamp. The middle part of the upper plane of the upper pipe clamp body is fixedly connected with the lower end of the piston rod 7. The piston at the upper end of the piston rod is located in the large diameter hole at the lower part of the central through hole of the upper cover plate of the pipe clamp. The diameters of the two match. sealing ring6. A thread is provided at the lower opening end of the large-diameter hole at the lower part of the central through hole, which is threadedly connected with the oil chamber cover 8 sleeved on the piston rod. A combined washer 14 is arranged between the upper cover plate of the pipe clamp and the oil chamber cover. The upper part of the small-diameter central through hole of the upper cover of the pipe clamp is a screw hole larger than the lower part. The periphery of the rubber diaphragm 17 is set on the ring surface where the screw hole and the through hole intersect. The inner hexagonal knob 19 has an external thread corresponding to the screw hole on the top of the small-diameter central through hole, as shown in Figure 2 . An inflatable valve 1 is arranged on the small-diameter central through hole of the upper cover plate of the pipe clamp, and an inflatable valve cover is arranged outside the inflatable valve. The upper cover plate of the pipe clamp is also provided with the upper openings of two channels, one of which is an oil inlet channel 5, and the upper opening of the channel is provided with a liquid-filled check valve 3, and the liquid-filled check valve is provided with a Dustproof case 2, the opening of the lower end of the channel communicates with the oil cavity between the diaphragm and the piston; the other channel is the exhaust channel 15, and the lower opening of the channel communicates with the oil cavity between the oil cavity cover and the piston. The upper opening of the hole is provided with a screw thread, which is connected to the exhaust pipe. The upper cover plate of the above-mentioned pipe clamp is also provided with two vertical through holes respectively, and the centerlines of the two through holes are respectively concentric with the through holes on the upper pipe clamp body. Two screw rods 16 are arranged, and they respectively pass through the upper cover plate of the pipe clamp, the upper pipe clamp body and the lower pipe clamp body from top to bottom, and the lower end is threadedly connected with the screw hole on the lower cover plate of the pipe clamp.
上述气压弹簧式减振管夹的工作过程大致如下：管道振动是由机械系统振动和流体系统流量脉动产生的，其振动形式可以分为两个状态，分别是管道管径的膨胀和管道管径缩回。当管道因振动而管径膨胀时，将其幅值变化通过与管道紧密接触的上衬套13、上管夹体9、活塞杆依次传递到油腔，然后通过压缩气腔的气体，将振动能量耗散；当管道管径收缩时，油腔的高压油将活塞杆推出，从而继续保持管道与管夹的上、下衬套紧密接触，实时地改变管夹的夹紧力；如此反复的动作，降低了管道的振动幅值，实现高频柔性减振，同时减小固定螺栓16螺纹承受力，有效地防止因固定螺栓16螺纹损坏导致管夹松动的情况发生。The working process of the above-mentioned air spring damping pipe clamp is roughly as follows: the pipe vibration is generated by the vibration of the mechanical system and the flow pulsation of the fluid system, and its vibration form can be divided into two states, namely the expansion of the pipe diameter and the pipe diameter retract. When the diameter of the pipe expands due to vibration, the change in amplitude is transmitted to the oil chamber through the upper bushing 13, the upper pipe clamp 9, and the piston rod in close contact with the pipe, and then the vibration is compressed by the gas in the air chamber. Energy dissipation; when the diameter of the pipe shrinks, the high-pressure oil in the oil chamber pushes the piston rod out, thereby continuing to keep the pipe in close contact with the upper and lower bushings of the pipe clamp, and changing the clamping force of the pipe clamp in real time; so repeated The action reduces the vibration amplitude of the pipeline, realizes high-frequency flexible vibration reduction, and at the same time reduces the bearing force of the thread of the fixing bolt 16, effectively preventing the pipe clamp from loosening due to damage to the thread of the fixing bolt 16.
Claims (4)
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| CN105135062B (en) * | 2015-09-05 | 2017-07-25 | 盐城市锦瑞石油机械有限公司 | A kind of petroleum pipeline support frame |
| CN105276074A (en) * | 2015-11-28 | 2016-01-27 | 甘仲光 | Buffer machine base for absorbing mechanical vibration energy and outputting fluid energy |
| CN105627012A (en) * | 2016-04-04 | 2016-06-01 | 阮居高 | Rubber pipe connecting device |
| CN105822837B (en) * | 2016-05-24 | 2017-11-03 | 北京工业大学 | A kind of two-dimensional magneto-rheological vibration damping pipe clamp |
| CN106015750A (en) * | 2016-06-30 | 2016-10-12 | 泉州市知产茂业工业设计有限公司 | Fixing device for flat aluminum pipe |
| CN106151124A (en) * | 2016-07-01 | 2016-11-23 | 湖北航天技术研究院特种车辆技术中心 | A kind of accumulator inflation inlet sealing device and method |
| CN105952975B (en) * | 2016-07-10 | 2018-01-19 | 北京工业大学 | A kind of magneto-rheological vibration damping pipe clamp |
| JP7105039B2 (en) * | 2017-06-26 | 2022-07-22 | 株式会社ディスコ | blade cover |
| CN107859787A (en) * | 2017-12-20 | 2018-03-30 | 燕山大学 | A kind of pressure measurement pipe clamp |
| CN108303466A (en) * | 2017-12-28 | 2018-07-20 | 浙江大学 | Wind the fixation noise-decreasing device of composite cylinder acoustic emission detection entirely for carbon fiber |
| CN108789995A (en) * | 2018-05-15 | 2018-11-13 | 芜湖君如保温材料有限公司 | A kind of pipeline foaming process tooling |
| CN110345266B (en) * | 2019-07-22 | 2021-02-05 | 浙江农林大学暨阳学院 | An electronic expansion valve with vibration damping effect |
| CN110332326B (en) * | 2019-07-22 | 2021-08-13 | 浙江农林大学暨阳学院 | An electronic expansion valve |
| CN113404965A (en) * | 2021-07-02 | 2021-09-17 | 浙江中工石化设备有限公司 | High-pressure damping support for eliminating radial pressure of pressure pipeline |
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