CN109441956A - 一种格栅除污机耐海水腐蚀轴承 - Google Patents
一种格栅除污机耐海水腐蚀轴承 Download PDFInfo
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Abstract
本发明涉及一种格栅除污机耐海水腐蚀轴承,包括轴、轴套、耐磨衬套、轴承外环、轴承压板和压板螺栓;其中,所述的轴与轴套采用过盈配合,直接将轴套加热套在轴的对应位置;所述的轴承外环与轴、轴承压板为间隙配合;在轴套和轴承外环之间放置耐磨衬套,耐磨衬套与轴承外环及轴套均为间隙配合;使用压板螺栓将轴承压板固定在轴上。本发明通过改变轴套、耐磨衬套、轴承外环等部件的大小以及安装方式等可用于涉海水介质、低转速、低频转动等设备(如格栅除污机、阀门等)的轴承零部件。
Description
技术领域
本发明属于核电厂格栅除污机可靠性提升领域,具体涉及一种格栅除污机耐海水腐蚀轴承。
背景技术
格栅除污机是核电站反冲洗水系统入口关键异物打捞设备,它直接影响核电机组冷源的可靠性。
格栅除污机正常停运时,机腹内的耙斗成开启状态。若此时除污信号发出,则耙斗沿耙斗导槽下降至栅底,然后耙斗合拢关闭。此时耙斗的耙齿嵌入细格栅栅条之间,随着此时耙斗的上升,耙斗在格栅上清污并将污物收集在耙斗中。直到耙斗到达上限位后,耙斗停止上升并打开耙斗,倒出耙斗内的垃圾异物,回到清污前状态,完成一个工作循环,故转动部件中轴承的灵活至关重要,影响整个设备动作时关联部件的联动。
原设计的格栅除污机的转动部件,由于转动部件内的轴承设计耐海水腐蚀性能差,造成轴承部件因海水腐蚀而锈蚀卡涩。格栅除污机运行过程中频繁产生设备由于转动不灵活、锈蚀卡涩缺原因引起的设备耙斗与翻版发生卡涩、耙斗不水平、钢丝绳左右不同步造成跳槽等故障,影响了格栅除污机及机组的连续可靠运行。
发明内容
本发明的目的在于:通过发明一种格栅除污机耐海水腐蚀轴承,提升格栅除污机轴承的使用寿命,从而降低因格栅除污机轴承卡涩造成设备部件转动不灵、耙斗无法动作、钢丝绳跳槽等故障,并具有安全、便捷以及提升设备可靠性、降低维修人力物力成本等特点。
本发明的技术方案如下:一种格栅除污机耐海水腐蚀轴承,包括轴、轴套、耐磨衬套、轴承外环、轴承压板和压板螺栓;
其中,所述的轴与轴套采用过盈配合,直接将轴套加热套在轴的对应位置;所述的轴承外环与轴、轴承压板为间隙配合;在轴套和轴承外环之间放置耐磨衬套,耐磨衬套与轴承外环及轴套均为间隙配合;使用压板螺栓将轴承压板固定在轴上;
所述的轴套,用于保护轴防止磨损,降低维修成本;
所述的轴承压板,用于限制轴套、耐磨衬套、轴承外环的位置,同时防止海水中较大的颗粒异物进入耐磨衬套的缝隙中,以降低耐磨衬套的磨损。
进一步的,所述的轴承的关键配合尺寸的要求如下:
a.间隙①与间隙②总和为2-5mm;
b.间隙③为0.5-1mm;
c.轴与轴套为过盈配合,过盈量为0.04-0.06mm;
d.轴套与耐磨衬套为间隙配合,配合间隙为0.20-0.30mm;
e.耐磨衬套与轴承外环为间隙配合,配合间隙为0.20-0.30mm;
f.轴承外环与轴承室为间隙配合,配合间隙为0.04-0.08mm。
进一步的,所述的轴,材质为316L不锈钢或双相不锈钢。
进一步的,所述的轴套,材质为316L不锈钢。
进一步的,所述的耐磨衬套,材质为高强度工程塑料,耐磨且耐海水腐蚀。
进一步的,所述的轴承外环,材质为316L不锈钢。
进一步的,所述的轴承压板,材质为316L不锈钢。
进一步的,在间隙①及间隙②的缝隙中涂抹润滑脂,有效防止海水中的颗粒异物进入耐磨衬套中。
本发明所述的一种格栅除污机耐海水腐蚀轴承的使用方法,包括以下步骤:
步骤1,外观目视检查各零部件,要求无磨损、锈蚀;
步骤2,使用清洗剂对各零进行擦拭清洁;
步骤3,将轴套加热至80℃,安装至轴上,确认安装到位后放置自然冷却至常温;
步骤4,将耐磨衬套安装至轴承外环内,整体将轴承外环和耐磨衬套插入已安装了轴套的轴上;
步骤5,将耐磨衬套与轴承外环推至最左边,测量并调整间隙②至合格范围内;
步骤6,在间隙①及间隙②的缝隙中涂抹润滑脂,有效防止海水中的颗粒异物进入耐磨衬套中;
步骤7,安装轴承压板,并使用压板螺栓进行手动固定,测量并调整间隙③至合格范围内;按照紧固要求完成压板螺栓力矩紧固;
步骤8,手动盘动轴或轴承外环,要求灵活无卡涩,如存在卡涩需重新解体检查;
步骤9,清洁作业区域,工作结束。
本发明的显著效果在于:将轴承中的耐磨衬套材质由不锈钢(镍铬铸铁)材质更换为“高强度工程塑料”,并优化轴承内外圈、轴套部件材质由不锈钢(镍铬铸铁)更换为耐海水腐蚀性能能佳的316L不锈钢材质。将该型格栅除污机耐海水腐蚀轴承在某核电站3/4号机组的应用实践彻底消除了前期反复产生格栅除污机机转动部件的轴承海水腐蚀锈蚀卡涩等故障,保障了核电机组冷源的安全稳定,避免了因设备故障引起冷源缺失而带来的机组出力损失。本发明对同行电厂格栅除污机涉及海水侵蚀轴承部件具有借鉴意义。通过改变轴套、耐磨衬套、轴承外环等部件的大小以及安装方式等可用于涉海水介质、低转速、低频转动等设备(如格栅除污机、阀门等)的轴承零部件。
附图说明
图1为本发明所述的一种格栅除污机耐海水腐蚀轴承的结构示意图;
图中:1.轴、2.轴套、3.耐磨衬套、4.轴承外环、5.轴承压板、6.压板螺栓。
具体实施方式
下面结合附图及具体实施例对本发明所述的一种格栅除污机耐海水腐蚀轴承作进一步详细说明。
如图1所示,一种格栅除污机耐海水腐蚀轴承,包括轴1、轴套2、耐磨衬套3、轴承外环4、轴承压板5和压板螺栓6;
其中,所述的轴1与轴套2采用过盈配合,直接将轴套2加热套在轴1的对应位置;所述的轴承外环4与轴1、轴承压板5为间隙配合;在轴套2和轴承外环4之间放置耐磨衬套3,耐磨衬套3与轴承外环4及轴套2均为间隙配合;使用压板螺栓6将轴承压板5固定在轴1上;
所述的轴套2,用于保护轴1防止磨损,降低维修成本;
所述的轴承压板5,用于限制轴套2、耐磨衬套3、轴承外环4的位置,同时防止海水中较大的颗粒异物进入耐磨衬套3的缝隙中,以降低耐磨衬套3的磨损。
进一步的,所述的轴承的关键配合尺寸的要求如下:
a.间隙①与间隙②总和为2-5mm;
b.间隙③为0.5-1mm;
c.轴1与轴套2为过盈配合,过盈量为0.04-0.06mm;
d.轴套2与耐磨衬套3为间隙配合,配合间隙为0.20-0.30mm;
e.耐磨衬套3与轴承外环4为间隙配合,配合间隙为0.20-0.30mm;
f.轴承外环4与轴承室为间隙配合,配合间隙为0.04-0.08mm。
进一步的,所述的轴1,材质为316L不锈钢或双相不锈钢。
进一步的,所述的轴套2,材质为316L不锈钢。
进一步的,所述的耐磨衬套3,材质为高强度工程塑料,耐磨且耐海水腐蚀。
进一步的,所述的轴承外环4,材质为316L不锈钢。
进一步的,所述的轴承压板5,材质为316L不锈钢。
进一步的,在间隙①及间隙②的缝隙中涂抹润滑脂,有效防止海水中的颗粒异物进入耐磨衬套3中。
本发明所述的一种格栅除污机耐海水腐蚀轴承的使用方法,包括以下步骤:
步骤1,外观目视检查各零部件,要求无磨损、锈蚀;
步骤2,使用清洗剂对各零进行擦拭清洁;
步骤3,将轴套2加热至80℃,安装至轴1上,确认安装到位后放置自然冷却至常温;
步骤4,将耐磨衬套3安装至轴承外环4内,整体将轴承外环4和耐磨衬套3插入已安装了轴套2的轴1上;
步骤5,将耐磨衬套3与轴承外环4推至最左边,测量并调整间隙②至合格范围内;
步骤6,在间隙①及间隙②的缝隙中涂抹润滑脂,有效防止海水中的颗粒异物进入耐磨衬套3中;
步骤7,安装轴承压板5,并使用压板螺栓6进行手动固定,测量并调整间隙③至合格范围内;按照紧固要求完成压板螺栓6力矩紧固;
步骤8,手动盘动轴1或轴承外环4,要求灵活无卡涩,如存在卡涩需重新解体检查;
步骤9,清洁作业区域,工作结束。
Claims (9)
1.一种格栅除污机耐海水腐蚀轴承,其特征在于:包括轴(1)、轴套(2)、耐磨衬套(3)、轴承外环(4)、轴承压板(5)和压板螺栓(6);
其中,所述的轴(1)与轴套(2)采用过盈配合,直接将轴套(2)加热套在轴(1)的对应位置;所述的轴承外环(4)与轴(1)、轴承压板(5)为间隙配合;在轴套(2)和轴承外环(4)之间放置耐磨衬套(3),耐磨衬套(3)与轴承外环(4)及轴套(2)均为间隙配合;使用压板螺栓(6)将轴承压板(5)固定在轴(1)上;
所述的轴套(2),用于保护轴(1)防止磨损,降低维修成本;
所述的轴承压板(5),用于限制轴套(2)、耐磨衬套(3)、轴承外环(4)的位置,同时防止海水中较大的颗粒异物进入耐磨衬套(3)的缝隙中,以降低耐磨衬套(3)的磨损。
2.如权利要求1所述的一种格栅除污机耐海水腐蚀轴承,其特征在于:所述的轴承的关键配合尺寸的要求如下:
a.间隙①与间隙②总和为2-5mm;
b.间隙③为0.5-1mm;
c.轴(1)与轴套(2)为过盈配合,过盈量为0.04-0.06mm;
d.轴套(2)与耐磨衬套(3)为间隙配合,配合间隙为0.20-0.30mm;
e.耐磨衬套(3)与轴承外环(4)为间隙配合,配合间隙为0.20-0.30mm;
f.轴承外环(4)与轴承室为间隙配合,配合间隙为0.04-0.08mm。
3.如权利要求1所述的一种格栅除污机耐海水腐蚀轴承,其特征在于:所述的轴(1),材质为316L不锈钢或双相不锈钢。
4.如权利要求1所述的一种格栅除污机耐海水腐蚀轴承,其特征在于:所述的轴套(2),材质为316L不锈钢。
5.如权利要求1所述的一种格栅除污机耐海水腐蚀轴承,其特征在于:所述的耐磨衬套(3),材质为高强度工程塑料,耐磨且耐海水腐蚀。
6.如权利要求1所述的一种格栅除污机耐海水腐蚀轴承,其特征在于:所述的轴承外环(4),材质为316L不锈钢。
7.如权利要求1所述的一种格栅除污机耐海水腐蚀轴承,其特征在于:所述的轴承压板(5),材质为316L不锈钢。
8.如权利要求2所述的一种格栅除污机耐海水腐蚀轴承,其特征在于:在间隙①及间隙②的缝隙中涂抹润滑脂,有效防止海水中的颗粒异物进入耐磨衬套(3)中。
9.如权利要求1所述的一种格栅除污机耐海水腐蚀轴承的使用方法,其特征在于,包括以下步骤:
步骤1,外观目视检查各零部件,要求无磨损、锈蚀;
步骤2,使用清洗剂对各零进行擦拭清洁;
步骤3,将轴套(2)加热至80℃,安装至轴(1)上,确认安装到位后放置自然冷却至常温;
步骤4,将耐磨衬套(3)安装至轴承外环(4)内,整体将轴承外环(4)和耐磨衬套(3)插入已安装了轴套(2)的轴(1)上;
步骤5,将耐磨衬套(3)与轴承外环(4)推至最左边,测量并调整间隙②至合格范围内;
步骤6,在间隙①及间隙②的缝隙中涂抹润滑脂,有效防止海水中的颗粒异物进入耐磨衬套(3)中;
步骤7,安装轴承压板(5),并使用压板螺栓(6)进行手动固定,测量并调整间隙③至合格范围内;按照紧固要求完成压板螺栓(6)力矩紧固;
步骤8,手动盘动轴(1)或轴承外环(4),要求灵活无卡涩,如存在卡涩需重新解体检查;
步骤9,清洁作业区域,工作结束。
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