CN107061882A - 一种吸收脉动的复合管 - Google Patents
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Abstract
本发明公开一种吸收脉动的复合管，包括内层、中间层及外层，所述内层是由纳米材料经过热喷涂方式喷涂于中间层内壁形成的具有微尺寸结构的薄层，所述外层为刚性管，所述中间层是由聚氨酯弹性体材料经3D打印形成的管状三维结构，采用粘接工艺紧密附着于外层的刚性管内壁，所述管状三维结构为网状结构，网状结构由3D打印程序设定，3D打印程序可根据不同工况需求调整，所述外层的刚性管可根据管路工作压力的不同需求选用铝合金、不锈钢或钛合金。与现有技术相比，本发明可以在高速高压工况下有效吸收液压管路系统中宽频域范围内的压力和流量脉动。
Description
技术领域
本发明主要涉及液压管路消振领域，具体涉及一种吸收脉动的复合管。
背景技术
液压管是液压系统中重要的辅助元件，液压泵工作产生的流量脉动和机械振动绝大部分会通过管路向系统中传递，而管路长期持续振动会造成管壁和支架的疲劳破坏，最终导致管路系统失效。常见的管路消振方法，如：安装蓄能器、减振喉；增加支架数量；使用弹性支撑等，虽能一定程度上减弱管路的振动，但是存在成本较高、不易实施、增加系统附加质量、消振频率范围窄等问题，无法满足高速高压发展趋势下流体动力系统宽频域振动控制的需求。
目前，已有一些应用于液压系统的吸振胶管，如：公开号CN1786541A的中国专利提供了一种耐压硅橡胶软管，内胶层和外胶层的主体材料都是硅橡胶，在制造工艺上通过预硫化处理进行改进，得到耐压性好的橡胶软管，但是软管内径小，且只适合于应用在食品、制药行业中。公开号CN1995791A的中国专利提供了一种新型硅橡胶软管，该软管采用不锈钢圈加固，使软管强度得到加强，但是，软管的弹性因此得到抑制，吸收脉动性差。公开号CN101382214A的中国专利提供了一种钢网塑料复合管，通过将浸入熔融状态塑料的化学纤维取出，并以编织形式缠绕在管状钢网骨架上形成复合管，但是网状钢骨架和塑料均存在强度较低、柔韧性较差的问题，无法在高速高压工况下使用，且不能形成复杂空间构型，适用范围较小。
发明内容
针对上述存在问题，本发明旨在提供一种能吸收脉动的复合管，该复合管可以在不增加额外设备的情况下有效吸收液压系统内部压力和流量脉动，减弱液压系统的流体振动。
本发明目的通过下述技术方案实现：一种吸收脉动的复合管，包括内层、中间层及外层，所述内层是由纳米材料经过热喷涂方式喷涂于中间层内壁形成的具有微尺度超滑表面的薄层，所述外层为刚性管，所述中间层是由聚氨酯弹性体材料经3D打印形成的管状三维结构，采用粘接工艺紧密附着于外层的刚性管内壁。
所述的管状三维结构为网状结构，网状结构由3D打印程序设定，3D打印程序可根据不同工况需求调整。
所述外层的刚性管可根据管路工作压力的不同需求选用铝合金、不锈钢或钛合金。
本发明的有益效果如下：
1.内壁为具有微尺度结构的纳米材料超滑表面，能明显减小管路内湍流现象，减弱湍流导致的液压管路流固耦合振动；
2.吸收流量脉动和振动的效果更强，具有更好的抵抗流体振动效果；
3.复合管可避免设置液压系统附加装置，简化了系统；
4.中间层的管状三维结构及外层刚性液压管路可根据安装空间的需求调整空间构型，适应各种安装环境；
5.中间层管状三维结构的切片结构和外层刚性管的材料可根据工况不同进行调整，满足各种压力等级需求；
6.具有足够结构强度，能适应高压、大流量工况需求。
附图说明
图1为吸收脉动的复合管整体结构示意图。
图2为图1所示复合管的剖面示意图。
图3为图1所示复合管的中间层3D打印切片结构示意图。
具体实施方式
下面结合附图及实施例对本发明做进一步说明：
如图1-2所示，本发明实施例的一种能吸收脉动的复合管，由内层1、中间层2和外层3构成。内层1为纳米材料经过热喷涂方式喷涂于中间层2内壁形成的超滑涂层，此涂层是具有微尺度结构的薄层，有极高的光滑度，能够减小流体流过时的沿程阻力，同时降低湍流产生率，减弱流体振动。中间层2是由高吸振性聚氨酯弹性体材料经3D打印技术形成的具有良好结构顺应性及回弹性能的管状三维结构，该管状三维结构采用粘接工艺紧密附着于外层的刚性管内壁，具有足够的回弹性能、脉动吸收性能及耐高压性能，能够较大范围地抵抗管路内壁的变形，有效吸收流量脉动。同时，3D打印技术能根据液压管路脉动吸收装置安装空间需求，打印出各种复杂空间构型的管状结构，以满足特殊安装需求。外层3为刚性管，实际应用中可根据管路不同承压需求选用铝合金、不锈钢、钛合金等不同材料。该刚性管可由直管经过弯管工艺满足不同管路安装空间需求，起保护内部结构、提供足够结构强度、保证耐高压性能的作用。
如图3所示，复合管的中间层2的3D打印切片结构为管状三维结构，该管状三维结构为网状结构，其切片结构可根据不同工况需求，通过改变3D打印程序进行调整，通过改变3D打印切片结构，使管状三维结构径向承压能力满足液压系统压力等级需求。
Claims (3)
1.一种吸收脉动的复合管，其特征在于，包括内层、中间层及外层，所述内层是由纳米材料经过热喷涂方式喷涂于中间层内壁形成的具有微尺寸结构的薄层，所述外层为刚性管，所述中间层是由聚氨酯弹性体材料经3D打印形成的管状三维结构，采用粘接工艺紧密附着于外层的刚性管内壁。
2.根据权利要求1所述的一种吸收脉动的复合管，其特征在于，所述的管状三维结构为网状结构，网状结构由3D打印程序设定，3D打印程序可根据不同工况需求调整。
3.根据权利要求1所述的一种吸收脉动的复合管，其特征在于，所述外层的刚性管可根据不同工况需求选用铝合金、不锈钢或钛合金。
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090035503A1 (en) * | 2005-09-30 | 2009-02-05 | Arkema France | Multilayer structure based on rubber and on a graft polyamide block copolymer, and its use as tubes for conditioned air and cooling circuits |
| CN202769096U (zh) * | 2012-09-13 | 2013-03-06 | 烟台蓝海机械制造有限公司 | 消除脉动的软管 |
| KR101401313B1 (ko) * | 2013-08-07 | 2014-07-01 | 원진하이원 주식회사 | 4중 구조의 폴리염화비닐관 |
| CN104315261A (zh) * | 2014-08-28 | 2015-01-28 | 孙金福 | 液压油管 |
| CN104405970A (zh) * | 2014-10-17 | 2015-03-11 | 燕山大学 | 一种仿生式液压管 |
| CN204328267U (zh) * | 2014-10-30 | 2015-05-13 | 燕山大学 | 一种内壁具有超滑及柔软特性的纳米仿生液压管 |
-
2017
- 2017-04-21 CN CN201710265593.8A patent/CN107061882A/zh active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090035503A1 (en) * | 2005-09-30 | 2009-02-05 | Arkema France | Multilayer structure based on rubber and on a graft polyamide block copolymer, and its use as tubes for conditioned air and cooling circuits |
| CN202769096U (zh) * | 2012-09-13 | 2013-03-06 | 烟台蓝海机械制造有限公司 | 消除脉动的软管 |
| KR101401313B1 (ko) * | 2013-08-07 | 2014-07-01 | 원진하이원 주식회사 | 4중 구조의 폴리염화비닐관 |
| CN104315261A (zh) * | 2014-08-28 | 2015-01-28 | 孙金福 | 液压油管 |
| CN104405970A (zh) * | 2014-10-17 | 2015-03-11 | 燕山大学 | 一种仿生式液压管 |
| CN204328267U (zh) * | 2014-10-30 | 2015-05-13 | 燕山大学 | 一种内壁具有超滑及柔软特性的纳米仿生液压管 |
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