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Title: Trends in development of automatically controlled pipeline valves

Abstract

One of the directions being taken in the field of modern chemical and petroleum machinery construction is the design of reliable, cost-competitive, electrically and actuated valves for pipelines and automatic control systems (ACS) for such valves. The requirements imposed on reliability and quality in the manufacture of automatically controlled pipeline valves are becoming more and more stringent. In order to determine the factors influencing valve reliability indexes, a study was made of a batch of valves with nominal diameter D = 100 mm and rated pressure p = 1.6 MPa, with metal-to-metal seating. It was found that with a seating force corresponding to the design value, initial leakage was observed after 3270 cycles, and with a 140% increase after 2740 cycles. The probability of trouble-free operation of these valves during the course of the guaranteed life (3300 cycles) decreases from 0.999 under the design conditions to 0.79 when the seating force is increased by 60% above the design value. The main factors contributing to greater seating force in comparison with the nominal (design) value are the rigidity of the valve/drive system (determined by the valve design, the type of seating contact, and the construction of the electric drive), the momentmore » of inertia of the rotating parts in the drive, the accuracy of adjustment of the drive, and the response time of the drive when actuated by the ACS.« less

Authors:
;
Publication Date:
OSTI Identifier:
171847
Resource Type:
Journal Article
Journal Name:
Russian Journal of Coordination Chemistry
Additional Journal Information:
Journal Volume: 20; Journal Issue: 7; Other Information: PBD: Jul 1994; TN: Translated from Koordinatsionnaya Khimiya; 20: No. 7, 8-11(1994)
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS; NATURAL GAS; TRANSPORT; PIPELINES; VALVES; CONTROL SYSTEMS; AUTOMATION; SAFETY; DESIGN

Citation Formats

Popov, N P, and Il`in, A Yu. Trends in development of automatically controlled pipeline valves. United States: N. p., 1994. Web.
Popov, N P, & Il`in, A Yu. Trends in development of automatically controlled pipeline valves. United States.
Popov, N P, and Il`in, A Yu. Fri . "Trends in development of automatically controlled pipeline valves". United States.
@article{osti_171847,
title = {Trends in development of automatically controlled pipeline valves},
author = {Popov, N P and Il`in, A Yu},
abstractNote = {One of the directions being taken in the field of modern chemical and petroleum machinery construction is the design of reliable, cost-competitive, electrically and actuated valves for pipelines and automatic control systems (ACS) for such valves. The requirements imposed on reliability and quality in the manufacture of automatically controlled pipeline valves are becoming more and more stringent. In order to determine the factors influencing valve reliability indexes, a study was made of a batch of valves with nominal diameter D = 100 mm and rated pressure p = 1.6 MPa, with metal-to-metal seating. It was found that with a seating force corresponding to the design value, initial leakage was observed after 3270 cycles, and with a 140% increase after 2740 cycles. The probability of trouble-free operation of these valves during the course of the guaranteed life (3300 cycles) decreases from 0.999 under the design conditions to 0.79 when the seating force is increased by 60% above the design value. The main factors contributing to greater seating force in comparison with the nominal (design) value are the rigidity of the valve/drive system (determined by the valve design, the type of seating contact, and the construction of the electric drive), the moment of inertia of the rotating parts in the drive, the accuracy of adjustment of the drive, and the response time of the drive when actuated by the ACS.},
doi = {},
journal = {Russian Journal of Coordination Chemistry},
number = 7,
volume = 20,
place = {United States},
year = {1994},
month = {7}
}