Identification of leakage in ball valves by analysis of pressure and torque signatures in cyclical tests under critical operating conditions
Autor(a) principal: | |
---|---|
Data de Publicação: | 2020 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/221183 |
Resumo: | Prototypes of Trunnion ball valves fitted with Scotch Yoke actuators have been submitted to opening and closing cycling tests so as to monitor and analyze their operation under critical conditions in order to evaluate their failure modes. The prototypes were arranged so as to collect data related to pressures, torques, temperatures and angular positions from the valve balls during the tests. Pressure signatures of the hydraulic actuator and stem torques were generated through the data collected and analyzed using the moving variance method. Also analyzed were the upstream and downstream pressure signature profiles of the valves throughout the test. It was found that the critical components for these pieces of equipment were the seals, called seats, which are produced from reinforced polytetrafluoroethylene (RPTFE). The seats showed considerable plastic deformations under the test conditions, which eventually lead to the rupture of the sealing band, resulting in leakages. When combining the analysis of the moving variance method with the analysis of the pressure signature profiles, changes were detected in the behavior of the prototypes throughout the tests, in addition to indicating the moment of failure. This methodology can be useful for prototype evaluations and even for valve instrumentation in the field, so as to ensure greater reliability, prevent unnecessary maintenance and provide safer operating conditions. |
id |
UFRGS-2_5087d54a6c2ee7cdc3bbe1ca5a62d6c8 |
---|---|
oai_identifier_str |
oai:www.lume.ufrgs.br:10183/221183 |
network_acronym_str |
UFRGS-2 |
network_name_str |
Repositório Institucional da UFRGS |
repository_id_str |
|
spelling |
Teles, Diógenes BarbosaGouveia, Sandro MarcosClarke, Thomas Gabriel Rosauro2021-05-18T04:36:03Z20201350-6307http://hdl.handle.net/10183/221183001125530Prototypes of Trunnion ball valves fitted with Scotch Yoke actuators have been submitted to opening and closing cycling tests so as to monitor and analyze their operation under critical conditions in order to evaluate their failure modes. The prototypes were arranged so as to collect data related to pressures, torques, temperatures and angular positions from the valve balls during the tests. Pressure signatures of the hydraulic actuator and stem torques were generated through the data collected and analyzed using the moving variance method. Also analyzed were the upstream and downstream pressure signature profiles of the valves throughout the test. It was found that the critical components for these pieces of equipment were the seals, called seats, which are produced from reinforced polytetrafluoroethylene (RPTFE). The seats showed considerable plastic deformations under the test conditions, which eventually lead to the rupture of the sealing band, resulting in leakages. When combining the analysis of the moving variance method with the analysis of the pressure signature profiles, changes were detected in the behavior of the prototypes throughout the tests, in addition to indicating the moment of failure. This methodology can be useful for prototype evaluations and even for valve instrumentation in the field, so as to ensure greater reliability, prevent unnecessary maintenance and provide safer operating conditions.application/pdfengEngineering failure analysis [recurso eletrônico]. [Oxford, England]. Vol. 117 (Nov. 2020), Art. 104828, 16 p.Válvulas (Engenharia)Trunnion ball valvesLeakage in the valve seatValve cyclingValve signatureValve monitoring in operationIdentification of leakage in ball valves by analysis of pressure and torque signatures in cyclical tests under critical operating conditionsEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001125530.pdf.txt001125530.pdf.txtExtracted Texttext/plain48281http://www.lume.ufrgs.br/bitstream/10183/221183/2/001125530.pdf.txt89b18225796089dec81ef28f3b7deeaaMD52ORIGINAL001125530.pdfTexto completo (inglês)application/pdf5240636http://www.lume.ufrgs.br/bitstream/10183/221183/1/001125530.pdf97e885e6967a563a3d3f27dd33f929d8MD5110183/2211832021-05-26 04:32:28.36946oai:www.lume.ufrgs.br:10183/221183Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2021-05-26T07:32:28Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Identification of leakage in ball valves by analysis of pressure and torque signatures in cyclical tests under critical operating conditions |
title |
Identification of leakage in ball valves by analysis of pressure and torque signatures in cyclical tests under critical operating conditions |
spellingShingle |
Identification of leakage in ball valves by analysis of pressure and torque signatures in cyclical tests under critical operating conditions Teles, Diógenes Barbosa Válvulas (Engenharia) Trunnion ball valves Leakage in the valve seat Valve cycling Valve signature Valve monitoring in operation |
title_short |
Identification of leakage in ball valves by analysis of pressure and torque signatures in cyclical tests under critical operating conditions |
title_full |
Identification of leakage in ball valves by analysis of pressure and torque signatures in cyclical tests under critical operating conditions |
title_fullStr |
Identification of leakage in ball valves by analysis of pressure and torque signatures in cyclical tests under critical operating conditions |
title_full_unstemmed |
Identification of leakage in ball valves by analysis of pressure and torque signatures in cyclical tests under critical operating conditions |
title_sort |
Identification of leakage in ball valves by analysis of pressure and torque signatures in cyclical tests under critical operating conditions |
author |
Teles, Diógenes Barbosa |
author_facet |
Teles, Diógenes Barbosa Gouveia, Sandro Marcos Clarke, Thomas Gabriel Rosauro |
author_role |
author |
author2 |
Gouveia, Sandro Marcos Clarke, Thomas Gabriel Rosauro |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Teles, Diógenes Barbosa Gouveia, Sandro Marcos Clarke, Thomas Gabriel Rosauro |
dc.subject.por.fl_str_mv |
Válvulas (Engenharia) |
topic |
Válvulas (Engenharia) Trunnion ball valves Leakage in the valve seat Valve cycling Valve signature Valve monitoring in operation |
dc.subject.eng.fl_str_mv |
Trunnion ball valves Leakage in the valve seat Valve cycling Valve signature Valve monitoring in operation |
description |
Prototypes of Trunnion ball valves fitted with Scotch Yoke actuators have been submitted to opening and closing cycling tests so as to monitor and analyze their operation under critical conditions in order to evaluate their failure modes. The prototypes were arranged so as to collect data related to pressures, torques, temperatures and angular positions from the valve balls during the tests. Pressure signatures of the hydraulic actuator and stem torques were generated through the data collected and analyzed using the moving variance method. Also analyzed were the upstream and downstream pressure signature profiles of the valves throughout the test. It was found that the critical components for these pieces of equipment were the seals, called seats, which are produced from reinforced polytetrafluoroethylene (RPTFE). The seats showed considerable plastic deformations under the test conditions, which eventually lead to the rupture of the sealing band, resulting in leakages. When combining the analysis of the moving variance method with the analysis of the pressure signature profiles, changes were detected in the behavior of the prototypes throughout the tests, in addition to indicating the moment of failure. This methodology can be useful for prototype evaluations and even for valve instrumentation in the field, so as to ensure greater reliability, prevent unnecessary maintenance and provide safer operating conditions. |
publishDate |
2020 |
dc.date.issued.fl_str_mv |
2020 |
dc.date.accessioned.fl_str_mv |
2021-05-18T04:36:03Z |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/221183 |
dc.identifier.issn.pt_BR.fl_str_mv |
1350-6307 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001125530 |
identifier_str_mv |
1350-6307 001125530 |
url |
http://hdl.handle.net/10183/221183 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Engineering failure analysis [recurso eletrônico]. [Oxford, England]. Vol. 117 (Nov. 2020), Art. 104828, 16 p. |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRGS instname:Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS |
instname_str |
Universidade Federal do Rio Grande do Sul (UFRGS) |
instacron_str |
UFRGS |
institution |
UFRGS |
reponame_str |
Repositório Institucional da UFRGS |
collection |
Repositório Institucional da UFRGS |
bitstream.url.fl_str_mv |
http://www.lume.ufrgs.br/bitstream/10183/221183/2/001125530.pdf.txt http://www.lume.ufrgs.br/bitstream/10183/221183/1/001125530.pdf |
bitstream.checksum.fl_str_mv |
89b18225796089dec81ef28f3b7deeaa 97e885e6967a563a3d3f27dd33f929d8 |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS) |
repository.mail.fl_str_mv |
|
_version_ |
1798487467850989568 |