坑道钻机模块化双泵站功率匹配实验研究

鲁飞飞; 凡东; 田宏亮

doi:10.12363/issn.1001-1986.21.12.0860

坑道钻机模块化双泵站功率匹配实验研究

鲁飞飞^{1, 2,},
凡东²,
田宏亮²

1.
煤炭科学研究总院，北京 100013
2.
中煤科工集团西安研究院有限公司，陕西西安 710077

基金项目: 中煤科工集团西安研究院有限公司科技创新基金项目(2021XAYJB02)

详细信息

作者简介:
鲁飞飞，1987年生，男，陕西宝鸡人，博士研究生，副研究员，研究方向为煤矿井下钻探装备. E-mail：lufeifei@cctegxian.com

中图分类号: TD41
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出版历程
- 收稿日期: 2021-12-22
- 修回日期: 2022-04-08
- 网络出版日期: 2022-08-05
- 刊出日期: 2022-08-24

Experimental study on power matching of modular double pumping stations of tunnel drilling rig

1.
China Coal Research Institute, Beijing 100013, China
2.
Xi’an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi’an 710077, China

摘要

摘要:
为解决坑道钻机动力泵站重量大、搬迁运输难题，提出通过模块设计，将泵站进行拆分，采用小排量双动力双泵合流解决方案。化整为零，可有效减小单个泵站的运输尺寸及重量，并可根据工况需求选择单泵站或双泵合流提高钻机使用的灵活性，同时降低能耗。负载敏感系统具有节能、负载适应性好、调速方便等优点，然而双负载敏感泵系统合流时，2个泵的输出功率不平衡，钻机输出参数不符合设计要求是亟需解决的难题。理论分析指出，两个负载敏感泵与负载敏感阀之间的反馈管路差异影响2个泵的功率平衡，然后建立双动力双泵负载敏感系统动态模型。基于该模型，动态分析双负载敏感泵系统压力流量特性，重点分析反馈管路以及压力补偿器对双泵站功率平衡的影响，并提出双负载敏感泵系统功率匹配方法。通过台架实验对理论分析结果进行验证，结果表明, 管路差异对双泵双动力负载敏感泵合流系统输出特性有较大的影响。在反馈管路中设置阻尼并根据管路匹配阻尼参数，可实现双泵输出参数的基本平衡。通过微调压力补偿器弹簧预压缩量，可使系统达到较好平衡，消除管路差异影响。该方法解决了2个泵站输出功率不平衡问题，该方法有较强的普适性和应用价值，对坑道钻机液压泵站的模块化设计具有重要的参考意义。
- 模块化 /
- 双泵站 /
- 功率平衡 /
- 负载敏感系统 /
- 合流 /
- 坑道钻机
Abstract:
In order to solve the problems of heavy weight, relocation and transportation of the power pumping station of tunnel drilling rigs, it is proposed to divide the pumping station through modular design, and adopt the solution of small-displacement, dual-power and dual-pump confluence, effectively reducing the transportation size and weight of a single pump station. A single-pump station or a double-pump confluence is chosen according to the working conditions to improve the flexibility of the drilling rig and reduce energy consumption. The load-sensing system has the advantages of energy saving, good load adaptability, and convenient speed regulation. However, when the dual-load-sensing pump system merges, the output power of the two pumps is unbalanced, and the output parameters of the drilling rig do not meet the design requirements, which are urgent problems to be solved. Through theoretical analysis, it is proposed that the difference of the feedback pipeline between the two load-sensitive pumps and the load-sensitive valve affects the power balance of the two pumps, and then the dynamic model of the dual-power dual-pump load-sensitive system is established. Based on the model, the pressure-flow characteristics of the dual-load sensitive pump system are dynamically analyzed, the influence of the feedback pipeline and pressure compensator on the power balance of the dual-pumping station is analyzed, and the power matching method of the dual-load-sensitive pump system is proposed. The theoretical analysis results are verified by the bench test. The results show that the pipeline difference has a great influence on the output characteristics of the dual-pump dual-dynamic load-sensitive pump confluence system. Setting damping in the feedback line and matching damping parameters according to the line can realize the basic balance of the output parameters of the two pumps. By fine-tuning the spring pre-compression of the pressure compensator, the system can achieve a better balance and eliminate the influence of pipeline differences. The problem of the unbalanced output power of the two pump stations is solved. The method has strong universality and application value, providing an important reference for the modular design of the hydraulic pump station of the tunnel drilling rig.
- modular /
- double power and double pump /
- power balance /
- load sensitive system /
- confluence /
- tunnel drilling rig

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图 1 ZDY1200G钻机

Fig. 1 ZDY1200G drilling rig

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图 2 双泵系统原理

1—电机；2—负载敏感泵；3—单向阀；4—负载敏感阀；5—回转马达；6—给进油缸； 7—平衡阀

Fig. 2 Schematic diagram of the multi pump system

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图 3 双泵负载敏感系统

1—负载敏感阀；2—动力头；3—泵1；4—泵2

Fig. 3 Multi pump load sensing system model

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图 4 不考虑管路差异仿真结果

Fig. 4 Simulation results without pipeline differences considered

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图 5 考虑管路差异模拟结果

Fig. 5 Simulation results with pipeline differences considered

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图 6 双泵负载敏感系统改进模型

1—负载敏感阀；2—动力头；3—泵1；4—泵2；5—阻尼；6—弹簧

Fig. 6 Improved model of the double-pump load sensing system

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图 7 阻尼孔通流面积与双泵功率匹配

Fig. 7 Matching of flow area and power

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图 8 微调压力补偿器双泵功率模拟结果

Fig. 8 Simulation results of fine tuning pressure compensator

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图 9 负载适应性模拟

Fig. 9 Load adaptability simulation

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图 10 未设置阻尼测试结果

Fig. 10 Test results with damping not added

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图 11 设置阻尼后台架测试结果

Fig. 11 Test results of adding 1 mm damping backstage

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图 12 0.8 mm阻尼孔通径后台架测试结果

Fig. 12 Test results of adding 0.8 mm damping backstage

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图 13 微调补偿压力后测试结果

Fig. 13 Test results after fine adjustment of compensation pressure

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表 1 ZDY1200G主要性能参数

Table 1 ZDY1200G parameters

名称	参数
转速/(r·min⁻¹)	300~1 000
转矩/(N·m)	0~1 200
动力头减速比	2.4
泵1功率/kW	40
泵2功率/kW	40
电机转速/(r·min⁻¹)	1450
泵1排量/(mL·r⁻¹)	45
泵2排量/(mL·r⁻¹)	45
马达排量/(mL·r⁻¹)	160

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表 2 模型主要参数

Table 2 Main parameters of the model

名称	参数
马达排量/(mL·r⁻¹)	160
动力头减速比	2.4
泵1排量/(mL·r⁻¹)	45
泵2排量/(mL·r⁻¹)	45
电机转速/(r·min⁻¹)	1 450
多路阀通径/mm	15
反馈管路通径/mm	6
系统最高工作压力/MPa	28

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表 3 测试台测试参数范围

Table 3 Test parameters and scope of the test bench

名称	参数
给进起拔力/kN	160
转速/(r·min⁻¹)	0~1 500
转矩/(N·m)	0~7 000
回油压力/MPa	0~3
系统压力/MPa	40
马达进出口压力/MPa	0~30
流量/(L·min⁻¹)	6.7~250.0
油温/℃	0~100
功率/kW	45

下载: 导出CSV

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