Engagement and Contact Analysis of Coiled Tubing Injector Head Chain Drive

Hu Zheng; Ma Weiguo; Qu Baolong; Liu Xuehang

doi:10.16578/j.issn.1004.2539.2023.04.020

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Engagement and Contact Analysis of Coiled Tubing Injector Head Chain Drive

Test·Analysis | 更新时间：2023-05-04

- Engagement and Contact Analysis of Coiled Tubing Injector Head Chain Drive
- Journal of Mechanical Transmission Vol. 47, Issue 4, Pages: 138-145(2023)
- 作者机构：
  
  1.长江大学机械工程学院，湖北荆州 434020
  2.长江大学化学与环境工程学院，湖北荆州 434020
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2023.04.020
  CLC：
- Published：15 April 2023，
  
  Received：20 September 2022，
  
  Revised：16 December 2022，
扫描看全文
胡政,马卫国,曲宝龙等.连续管注入头链传动啮合及接触分析[J].机械传动,2023,47(04):138-145.

Hu Zheng,Ma Weiguo,Qu Baolong,et al.Engagement and Contact Analysis of Coiled Tubing Injector Head Chain Drive[J].Journal of Mechanical Transmission,2023,47(04):138-145.
胡政,马卫国,曲宝龙等.连续管注入头链传动啮合及接触分析[J].机械传动,2023,47(04):138-145. DOI： 10.16578/j.issn.1004.2539.2023.04.020.

Hu Zheng,Ma Weiguo,Qu Baolong,et al.Engagement and Contact Analysis of Coiled Tubing Injector Head Chain Drive[J].Journal of Mechanical Transmission,2023,47(04):138-145. DOI： 10.16578/j.issn.1004.2539.2023.04.020.

摘要

连续管注入头链传动的不平稳性和链条、链轮的磨损是常见问题，也是导致连续管打滑、溜管和咬伤的主要因素。为此，建立了注入头链条与链轮轮齿啮合接触力学模型，分析了链条紧边力、紧边夹角、链条伸长率对接触点位置和齿面支反力的影响，揭示了链条与链轮的啮合行为，并用Ansys仿真验证了接触力学模型的准确性，为注入头的设计和安全可靠工作奠定理论基础。研究表明，当链条紧边力增加，松边力不变时，紧边侧链条的啮入位置基本不变，松边侧链条的啮出位置向齿底靠近，齿面支反力增大；当紧边力接近松边力时，松边侧链条啮出位置的齿面支反力存在陡然增加现象；链条紧边夹角增加对紧边侧链条啮入位置及其齿面支反力影响不大，链条的啮出位置向齿底靠近；当链条伸长时，链条的啮入和啮出位置分别背向轮齿齿底方向，啮合点位置升高。

Abstract

The coiled tubing injector head is the core component of the coiled tubing oil and gas well operation equipment

which directly determines the coiled tubing operation capability

and its chain drive system pulls the coiled tubing in or out the wellbore. However

the unsteady chain drive and the wear between the chain and sprocket are common problems which are the main factors leading to slipping

pipe sliding and bites of coiled tubing in engineering practice. Based on the standard roller chain and sprocket

the mechanical model of the engagement contact between the injector head chain and the sprocket teeth is established to analyze the influence of chain tension force

chain tension angle and chain pitch on the position of contact points and tooth surface support reaction force

and the accuracy of the contact mechanical model is verified by Ansys simulation which lays a theoretical foundation for the design and safety of the injector. The research shows that when the tension force of the chain increases and the loosening force remains unchanged

the engaging-in position of the chain on the tension side is basically unchanged

the reaction force of the tooth surface support increases

and the engaging-out position of the chain rollers is close to the bottom of the sprocket teeth. However

when the tension force approaches the loosening force

there is a sudden increase in the support reaction force of the engaging-out contact position. The increase of the angle between the tension side and the vertical direction of the chain has little effect on the engaging-in position and the tooth surface support reaction force

the engaging-out position of the chain rollers is close to the bottom of the sprocket teeth. The engaging in and out points of the chain are respectively away from the direction of the bottom of the sprocket teeth and the contact position is improved when the chain is extended.

关键词

连续管注入头链传动啮合Ansys仿真

Keywords

Coiled tubingInjector headChain driveEngagemenAnsys

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