Design of Disk Type Valves for Large Pipes

Pang Dongqing; Gao Zhengbin; Sun Yicai

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Design of Disk Type Valves for Large Pipes

Pang Dongqing, Gao Zhengbin, Sun Yicai

Published in Asia-Pacific Journal of Mechanical Engineering (Volume 1, Issue 1)

Received: 29 August 2019 Accepted: 23 September 2019 Published: 9 October 2019

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Abstract

Taking a disk-type valve as the object, the using the well-known exponent relationship between flow in valves and its opening angle and combining fluid mechanics on the relationship among the flow and pressure difference, the valve pipe area, the flow coefficient, then the exponential relationship between flow coefficient and its opening angle is established, under the condition of the pressure difference and the valve pipe area without variation, The two exponential relationships are the same shape, their difference lies only in the different scales, which is the characteristics of this paper. Then the actual numerical relationship among flow and valve opening angle, the pressure difference, the valve pipe area can be got to design a suitable minimum radius of disc valve pipe. Then the relationship graphs of different valve radius with valve opening angle and pressure are calculated and draw out, using different flow coefficient a. Also studied both of the static force and the impact force of the water flow with its open angle on the valve disc. The results of calculating these two forces by different formulas show that the impact force at the maximum opening angle is equal to the static force, so theoretically, a = 0,7 is confirmed as a limit of the flow coefficient, because there is a relationship of 2a² for both forces. At last, strength of the disk shaft and its sleeve are verified too.

Published in	Asia-Pacific Journal of Mechanical Engineering (Volume 1, Issue 1)
Page(s)	1-8
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

Disk-type Valve, Valve Opening Angle, Exponent Relationship, Flow Coefficient, Impact Force, Strength Verification

References

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[3]	孙冰、田丰、刘远鹏、齐景爱、高金雍微小型静电泵的设计（2）[J]. 传感器世界，2016,8(22): 11-15。
[4]	孙冰、田丰、刘远鹏、齐景爱、高金雍微小型静电泵的设计（3）[J]. 传感器世界，2016,9(22): 25-30。
[5]	孙冰、刘远鹏、田丰、刘丽、齐景爱微小型静电泵的球阀设计[J]. 传感器世界，2017,12(23):36-42。
[6]	孙冰、刘远鹏、田丰、静电泵的锥塞型阀门设计[J],机床与液压，2019,1(47),78-81。
[7]	孙冰、田丰、刘远鹏、刘丽、齐景爱,心脏手术代用静电泵与阀的结构参数设计[J]. 传感器世界，2018,3，(24): 19-26。
[8]	孙冰、刘丽、张妍、田丰、齐景爱,血液静电泵的碟型阀门设计[J]. 传感器世界，2019,5，(26):15-23。
[9]	沈新福、李江莉、李增珍、陆冰，一种新型电动蝶阀调节特性的数值计算实验研究[J]，液压与气动,2006(5)47-49。
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[13]	邓业民、孔晓武、邱敏秀、魏建华，先导式大流量高速开关阀的优化设计,《机械设计》，2010,27(9):84-87。
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APA Style

Pang Dongqing, Gao Zhengbin, Sun Yicai. (2019). Design of Disk Type Valves for Large Pipes. Asia-Pacific Journal of Mechanical Engineering, 1(1), 1-8.

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ACS Style

Pang Dongqing; Gao Zhengbin; Sun Yicai. Design of Disk Type Valves for Large Pipes. Asia-Pac. J. Mech. Eng. 2019, 1(1), 1-8.

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AMA Style

Pang Dongqing, Gao Zhengbin, Sun Yicai. Design of Disk Type Valves for Large Pipes. Asia-Pac J Mech Eng. 2019;1(1):1-8.

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@article{10042734,
  author = {Pang Dongqing and Gao Zhengbin and Sun Yicai},
  title = {Design of Disk Type Valves for Large Pipes},
  journal = {Asia-Pacific Journal of Mechanical Engineering},
  volume = {1},
  number = {1},
  pages = {1-8},
  url = {https://www.sciencepublishinggroup.com/article/10042734},
  abstract = {Taking a disk-type valve as the object, the using the well-known exponent relationship between flow in valves and its opening angle and combining fluid mechanics on the relationship among the flow and pressure difference, the valve pipe area, the flow coefficient, then the exponential relationship between flow coefficient and its opening angle is established, under the condition of the pressure difference and the valve pipe area without variation, The two exponential relationships are the same shape, their difference lies only in the different scales, which is the characteristics of this paper. Then the actual numerical relationship among flow and valve opening angle, the pressure difference, the valve pipe area can be got to design a suitable minimum radius of disc valve pipe. Then the relationship graphs of different valve radius with valve opening angle and pressure are calculated and draw out, using different flow coefficient a. Also studied both of the static force and the impact force of the water flow with its open angle on the valve disc. The results of calculating these two forces by different formulas show that the impact force at the maximum opening angle is equal to the static force, so theoretically, a = 0,7 is confirmed as a limit of the flow coefficient, because there is a relationship of 2a2 for both forces. At last, strength of the disk shaft and its sleeve are verified too.},
 year = {2019}
}

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TY  - JOUR
T1  - Design of Disk Type Valves for Large Pipes
AU  - Pang Dongqing
AU  - Gao Zhengbin
AU  - Sun Yicai
Y1  - 2019/10/09
PY  - 2019
T2  - Asia-Pacific Journal of Mechanical Engineering
JF  - Asia-Pacific Journal of Mechanical Engineering
JO  - Asia-Pacific Journal of Mechanical Engineering
SP  - 1
EP  - 8
PB  - Science Publishing Group
UR  - http://www.sciencepg.com/article/10042734
AB  - Taking a disk-type valve as the object, the using the well-known exponent relationship between flow in valves and its opening angle and combining fluid mechanics on the relationship among the flow and pressure difference, the valve pipe area, the flow coefficient, then the exponential relationship between flow coefficient and its opening angle is established, under the condition of the pressure difference and the valve pipe area without variation, The two exponential relationships are the same shape, their difference lies only in the different scales, which is the characteristics of this paper. Then the actual numerical relationship among flow and valve opening angle, the pressure difference, the valve pipe area can be got to design a suitable minimum radius of disc valve pipe. Then the relationship graphs of different valve radius with valve opening angle and pressure are calculated and draw out, using different flow coefficient a. Also studied both of the static force and the impact force of the water flow with its open angle on the valve disc. The results of calculating these two forces by different formulas show that the impact force at the maximum opening angle is equal to the static force, so theoretically, a = 0,7 is confirmed as a limit of the flow coefficient, because there is a relationship of 2a2 for both forces. At last, strength of the disk shaft and its sleeve are verified too.
VL  - 1
IS  - 1
ER  -

Copy | Download

Author Information

Pang Dongqing

College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin, People’s Republic of China
Gao Zhengbin

Information College, Hebei University of Technology, Tianjin, People’s Republic of China
Sun Yicai

Information College, Hebei University of Technology, Tianjin, People’s Republic of China

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Plain Text BibTeX RIS

APA Style

Pang Dongqing, Gao Zhengbin, Sun Yicai. (2019). Design of Disk Type Valves for Large Pipes. Asia-Pacific Journal of Mechanical Engineering, 1(1), 1-8.

Copy | Download

ACS Style

Pang Dongqing; Gao Zhengbin; Sun Yicai. Design of Disk Type Valves for Large Pipes. Asia-Pac. J. Mech. Eng. 2019, 1(1), 1-8.

Copy | Download

AMA Style

Pang Dongqing, Gao Zhengbin, Sun Yicai. Design of Disk Type Valves for Large Pipes. Asia-Pac J Mech Eng. 2019;1(1):1-8.

Copy | Download

@article{10042734,
  author = {Pang Dongqing and Gao Zhengbin and Sun Yicai},
  title = {Design of Disk Type Valves for Large Pipes},
  journal = {Asia-Pacific Journal of Mechanical Engineering},
  volume = {1},
  number = {1},
  pages = {1-8},
  url = {https://www.sciencepublishinggroup.com/article/10042734},
  abstract = {Taking a disk-type valve as the object, the using the well-known exponent relationship between flow in valves and its opening angle and combining fluid mechanics on the relationship among the flow and pressure difference, the valve pipe area, the flow coefficient, then the exponential relationship between flow coefficient and its opening angle is established, under the condition of the pressure difference and the valve pipe area without variation, The two exponential relationships are the same shape, their difference lies only in the different scales, which is the characteristics of this paper. Then the actual numerical relationship among flow and valve opening angle, the pressure difference, the valve pipe area can be got to design a suitable minimum radius of disc valve pipe. Then the relationship graphs of different valve radius with valve opening angle and pressure are calculated and draw out, using different flow coefficient a. Also studied both of the static force and the impact force of the water flow with its open angle on the valve disc. The results of calculating these two forces by different formulas show that the impact force at the maximum opening angle is equal to the static force, so theoretically, a = 0,7 is confirmed as a limit of the flow coefficient, because there is a relationship of 2a2 for both forces. At last, strength of the disk shaft and its sleeve are verified too.},
 year = {2019}
}

Copy | Download

TY  - JOUR
T1  - Design of Disk Type Valves for Large Pipes
AU  - Pang Dongqing
AU  - Gao Zhengbin
AU  - Sun Yicai
Y1  - 2019/10/09
PY  - 2019
T2  - Asia-Pacific Journal of Mechanical Engineering
JF  - Asia-Pacific Journal of Mechanical Engineering
JO  - Asia-Pacific Journal of Mechanical Engineering
SP  - 1
EP  - 8
PB  - Science Publishing Group
UR  - http://www.sciencepg.com/article/10042734
AB  - Taking a disk-type valve as the object, the using the well-known exponent relationship between flow in valves and its opening angle and combining fluid mechanics on the relationship among the flow and pressure difference, the valve pipe area, the flow coefficient, then the exponential relationship between flow coefficient and its opening angle is established, under the condition of the pressure difference and the valve pipe area without variation, The two exponential relationships are the same shape, their difference lies only in the different scales, which is the characteristics of this paper. Then the actual numerical relationship among flow and valve opening angle, the pressure difference, the valve pipe area can be got to design a suitable minimum radius of disc valve pipe. Then the relationship graphs of different valve radius with valve opening angle and pressure are calculated and draw out, using different flow coefficient a. Also studied both of the static force and the impact force of the water flow with its open angle on the valve disc. The results of calculating these two forces by different formulas show that the impact force at the maximum opening angle is equal to the static force, so theoretically, a = 0,7 is confirmed as a limit of the flow coefficient, because there is a relationship of 2a2 for both forces. At last, strength of the disk shaft and its sleeve are verified too.
VL  - 1
IS  - 1
ER  -

Copy | Download