Application Research of High-precision Sensing Mechanisms Based on Pressure Amplification

doi:10.3969/j.issn.1004-132X.2025.12.008

China Mechanical Engineering ›› 2025, Vol. 36 ›› Issue (12): 2870-2874.DOI: 10.3969/j.issn.1004-132X.2025.12.008

Application Research of High-precision Sensing Mechanisms Based on Pressure Amplification

Lejun HE¹^,²(), Yi XI¹(), Wen LIU², Xiang YAN², Mingjie XIN³, Chaoyang WANG⁴

^1.School of Mechanical and Electrical Engineering，Hunan University of Science and Technology，Xiangtan，Hunan，411201
^2.College of Information and Intelligence Engineering，Zhejiang Wanli University，Ningbo，Zhejiang，315100
^3.Ningbo Xinjie Gas Appliances Co. ，Ltd. ，Ningbo，Zhejiang，315012
^4.Ningbo Huacheng Valve Co. ，Ltd. ，Ningbo，Zhejiang，315699

Received:2025-06-03 Online:2025-12-25 Published:2025-12-31
Contact: Yi XI

压力倍放高精感知机构应用研究

贺乐君¹^,²(), 习毅¹(), 刘文², 严翔², 忻明杰³, 王朝阳⁴

^1.湖南科技大学机电工程学院, 湘潭, 411201
^2.浙江万里学院信息与智能工程学院, 宁波, 315100
^3.宁波忻杰燃气用具实业有限公司, 宁波, 315012
^4.宁波华成阀门有限公司, 宁波, 315699

通讯作者: 习毅
作者简介:贺乐君，男，2001年生，硕士研究生。研究方向为机电液一体化。E-mail：2781349059@qq.com
习毅^*（通信作者），男，1988年生，副教授。研究方向为流体传动与控制、机电液一体化。发表论文11篇。E-mail：xiyi1235@163.com。
基金资助:
国家重点研发计划(2024YFB3815005);宁波市“科创甬江2035”关键技术突破计划(2024Z161);宁波市“科创甬江2035”关键技术突破计划(2025Z142);湖南省教育厅科学研究项目(23B0496)

Abstract

Abstract:

Aiming at the problems of delayed shut-off response in existing gas self-closing valves under leakage conditions， based on pressure amplification a high-precision sensing mechanism was integrated into the valve body as a pilot control mechanism， utilizing the pressure amplification effects to achieve high-precision sensing and actuation.Through FLUENT flow field simulation， the dynamic mechanism of the pressure amplification unit's effect on the pressure sensing region was revealed， clarifying the overcurrent shut-off mechanism whereby minute flow changes trigger an exponential pressure drop surge. A gas leakage experimental system was constructed for validation. The results indicate that the gas self-closing valve equipped with the mechanisms may accurately shut off at a flow rate of 1.211 m³/h， with a deviation of only 0.0107 m³/h from the theoretical set value. The pressure drop mathematical model predicts accurately， showing a mean absolute percentage error（MAPE） of 4.19% between theoretical and experimental values， demonstrates the effectiveness of the pressure amplification unit applied in gas self-closing valves.

Key words: pressure amplification, high-precision sensing mechanism, gas self-closing valve, flow field characteristic analysis?

摘要：

针对现有燃气自闭阀在泄漏工况下切断响应滞后的问题，将压力倍放高精感知机构作为先导控制机构集成于阀体，利用其压力倍放效应实现高精度感知与驱动；通过FLUENT流场仿真揭示了压力倍放单元对压力感应区域的动态作用机制，明确了微小流量变化触发指数级压降跃升的过流切断机理；最后搭建了燃气泄漏实验系统并进行了实验验证。结果表明：应用该机构的燃气自闭阀可在流量达到1.211 m³/h时精准切断，与理论设定值偏差仅为0.0107 m³/h，压降数学模型预测准确，理论与实验值的平均绝对百分比误差为4.19%，证实了压力倍放单元在燃气自闭阀中应用的有效性。

关键词: 压力倍放, 高精感知机构, 燃气自闭阀, 流场特性分析

CLC Number:

TH137.52

Lejun HE, Yi XI, Wen LIU, Xiang YAN, Mingjie XIN, Chaoyang WANG. Application Research of High-precision Sensing Mechanisms Based on Pressure Amplification[J]. China Mechanical Engineering, 2025, 36(12): 2870-2874.

贺乐君, 习毅, 刘文, 严翔, 忻明杰, 王朝阳. 压力倍放高精感知机构应用研究[J]. 中国机械工程, 2025, 36(12): 2870-2874.

Figures/Tables 7

Fig.1 Schematic of gas leakage cutoff based on pressure amplification

Fig.2 Structural schematic of gas self-closing valve

Fig.3 Velocity field distributions at three valve core positions

Fig.4 Pressure field distributions at three valve core positions

Fig.5 Gas leakage experiment

Fig.6 Comparison of theoretical and actual pressure drop

Fig.7 Experimental verification of overcurrent cutoff

References 14

[1]	冯彬，关少坤，陈力，等.基于图神经网络的可燃气体泄漏扩散预测方法［J/OL］.爆炸与冲击，2025： 1-19.［2025-10-11］..
	FENG Bin， GUAN Shaokun， CHEN Li， et al. A Graph Neural Network-Based Prediction Method for Combustible Gas Leakage and Diffusion ［J/OL］. Explosion and Shock Waves， 2025： 1-19. ［2025-10-11］..
[2]	中华人民共和国住房和城乡建设部. 管道燃气自闭阀：［S］. 北京：中国标准出版社， 2014.
	Ministry of Housing and Urban-Rural Development of the People’s Republic of China. Automatic Shut-off Valve for Pipeline Gas：［S］. Beijing： Standards Press of China， 2014.
[3]	陈俊翔，孔祥东，许克龙，等.高压螺纹插装式溢流阀综合性能优化［J］.中国机械工程，2023，34（24）：2909-2919.
	CHEN Junxiang， KONG Xiangdong， XU Kelong， et al. Comprehensive Performance Optimization of High-Pressure Threaded Cartridge Relief Valves ［J］. China Mechanical Engineering， 2023， 34（24）： 2909-2919.
[4]	周国强，王慧，宋宇宁，等.液压支架双级安全阀设计及其快速动载冲击试验研究［J］.中国机械工程，2023，34（18）：2194-2203.
	ZHOU Guoqiang， WANG Hui， SONG Yuning， et al. Design of a Two-stage Safety Valve for Hydraulic Supports and Experimental Study on Its Rapid Dynamic Load Impact ［J］. China Mechanical Engineering， 2023， 34（18）： 2194-2203.
[5]	ZONG Chaoyong， ZHENG Fengjie， LI Qingye， et al. Experimental Analysis of the Lift Force Discontinuity of a Spring-loaded Pressure Safety Valve Working in Pneumatic Service［J］. Journal of Pressure Vessel Technology， 2020， 142（6）： 064501.
[6]	GUO C， MAO J. Anti-impact Load Characteristics of Two-stage Safety Valve for Hydraulic Support［J］. Ain Shams Engineering Journal， 2022， 13（5）：101738.
[7]	ZHOU Hao， YANG Changqun， YUAN Jun， et al. Mechanical and System Simulation Modeling and Analysis of Surge Relief Valve［C］∥ ASME 2020 International Mechanical Engineering Congress and Exposition. Online，2020： V008T08A024.
[8]	KESZTHELYI G， SCHMIDT J， DENECKE J. Evaluation of One-dimensional Models to Predict Chatter in Spring-loaded Pressure Relief Valves for Gas Service［J］. Process Safety and Environmental Protection， 2024， 182： 1097-1109.
[9]	ZHENG Fengjie， ZONG Chaoyong， ZHANG Chao， et al. Dynamic Instability Analysis of a Spring-loaded Pressure Safety Valve Connected to a Pipe by Using Computational Fluid Dynamics Methods［J］. Journal of Pressure Vessel Technology， 2021， 143（4）： 041403.
[10]	李树勋，连超，潘伟亮，等.基于改进NSGA-Ⅱ算法的安全阀动态特性分析及优化［J］.振动与冲击，2023，42（13）：66-74.
	LI Shuxun， LIAN Chao， PAN Weiliang， et al. Dynamic Characteristic Analysis and Optimization of Safety Valves Based on Improved NSGA-Ⅱ Algorithm ［J］. Journal of Vibration and Shock， 2023， 42（13）： 66-74.
[11]	王慧，周国强，王禹涧，等.航空推进系统气动安全阀结构参数分析及优化［J］.中国安全科学学报，2023，33（2）：48-58.
	WANG Hui， ZHOU Guoqiang， WANG Yujian， et al. Analysis and Optimization of Structural Parameters for a Pneumatic Safety Valve in Aircraft Propulsion Systems ［J］. China Safety Science Journal， 2023， 33（2）： 48-58.
[12]	梅元贵，范崇勋.被动式压力控制技术的高速列车车内压力计算方法研究［J］.铁道学报，2024，46（9）：28-37.
	MEI Yuangui， FAN Chongxun. A Calculation Method for Interior Pressure of High-speed Trains with Passive Pressure Control Technology ［J］. Journal of the China Railway Society， 2024， 46（9）： 28-37.
[13]	LI Shuxun， HOU Jianjun， PAN Weiliang， et al. Study on Aerodynamic Noise Numerical Simulation and Characteristics of Safety Valve Based on Dipole and Quadrupole［J］. Acoustics Australia， 2020， 48（3）： 441-454.
[14]	贺乐君，习毅，刘文，等. 压力倍放高精感知机构设计方法研究［J］. 中国机械工程，2025，36（11）：2061-2608.
	HE Lejun， XI Yi， LIU Wen， et al.Design Methodologies for High-precision Sensing Mechanisms Based on Pressure Amplification［J］. China Mechanical Engineering， 2025，36（11）：2061-2608.

Application Research of High-precision Sensing Mechanisms Based on Pressure Amplification

压力倍放高精感知机构应用研究

RichHTML

PDF

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 7

References 14

Related Articles 14

Recommended Articles

Metrics

[1]	Lejun HE, Yi XI, Wen LIU, Xiang YAN, Mingjie XIN, Chaoyang WANG. Design Methodologies for High-precision Sensing Mechanisms Based on Pressure Amplification [J]. China Mechanical Engineering, 2025, 36(11): 2601-2608.
[2]	ZHAO Guochao, WANG Hui, SUN Yuanjing, ZHANG Changshuai. Experimental Research on Interactions of Slotted Parameters for Rotary Distributing Excitation Control Valves#br# [J]. China Mechanical Engineering, 2021, 32(09): 1035-1042.
[3]	WANG Jie;ZHANG Jianzhuo;LIU Lingwei;. Simulation and Experimental Study of High Pressure and Large Flow Quick Opening Valves [J]. China Mechanical Engineering, 2018, 29(08): 916-922.
[4]	CHEN Dongning, LIU Yidan, YAO Chengyu, JIANG Donglin, WANG Kexun, . Friction Compensation of Proportional Multiway Valve Based on Modified Viscous Friction LuGre Model [J]. China Mechanical Engineering, 2017, 28(01): 62-68.
[5]	Tu Bo, Tian Hua, Wei Haiqiao, Pan Mingzhang. Research on Buffering Process of Electro-hydraulic Variable Valve Train [J]. China Mechanical Engineering, 2016, 27(19): 2652-2658.
[6]	Li Sihai, Yuan Shihao. Study on Two-stage Throttle Port Cavitation Characterization [J]. China Mechanical Engineering, 2015, 26(16): 2165-2169,2221.
[7]	Li Weijia, Lan Qiuhua, Peng Yong, Yi Disheng. Optimization Design of Notches in Spool Valve Based on PSO Algorithm [J]. China Mechanical Engineering, 2015, 26(8): 995-999.
[8]	Jiang Wanlu1,2;Zhu Yong1,2;Yang Chao1,2. Study on Nonlinear Dynamics Behavior of a Hydraulic Relief Valve [J]. China Mechanical Engineering, 2013, 24(20): 2705-2709.
[9]	Luo Yanlei;Chen Lunjun. Research on Damping Characteristics of Hydraulic Circuit of Load Sensing Outlet Pressure Compensation [J]. China Mechanical Engineering, 2013, 24(19): 2573-2576,2583.
[10]	YIN Yao-Bao, ZHANG Xi. Effects of Fixed Orifice Length on Null Position Characteristics of Double Nozzle Flapper Valve under Low Temperature [J]. China Mechanical Engineering, 2012, 23(19): 2275-2279.
[11]	YIN Yao-Bao, ZHANG Xi, LI Chang-Meng. Zero Deviation of Electro-hydraulic Servovalve under One-dimensional Centrifugal Acceleration Environment [J]. China Mechanical Engineering, 2012, 23(10): 1142-1146.
[12]	LI Yong, DING Fan, SHEN Yuan-De. Steady-state Characteristics of Proportional Pilot-operated Relief Valve with Low Power Consumption [J]. China Mechanical Engineering, 2010, 21(24): 2921-2925.
[13]	TUN Fu-Chao, TUN Bai-Hu, ZHANG Xiu-Hua. Numerical Simulation of Heat Transfer Performance of Paraffin Thermal-Sensitive Valve  [J]. J4, 201016, 21(16): 1921-1926.
[14]	TUN Fu-Chao, TUN Bai-Hu, ZHANG Xiu-Hua. Numerical Simulation of Heat Transfer Performance of Paraffin Thermal-Sensitive Valve  [J]. China Mechanical Engineering, 2010, 21(16): 1921-1926.