WO2023069039A1 - Vanne papillon à double excentrique à structure d'arbre étagée - Google Patents

Vanne papillon à double excentrique à structure d'arbre étagée Download PDF

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Publication number
WO2023069039A1
WO2023069039A1 PCT/TR2022/050159 TR2022050159W WO2023069039A1 WO 2023069039 A1 WO2023069039 A1 WO 2023069039A1 TR 2022050159 W TR2022050159 W TR 2022050159W WO 2023069039 A1 WO2023069039 A1 WO 2023069039A1
Authority
WO
WIPO (PCT)
Prior art keywords
throttle
butterfly valve
stepped
shaft
double eccentric
Prior art date
Application number
PCT/TR2022/050159
Other languages
English (en)
Inventor
Cem IRGAT
Salih SURENER
Sema Yildiz YOLDAS
Original Assignee
Dikkan Gemi Ve Endustriyel Vana Sanayi Ticaret Anonim Sirketi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dikkan Gemi Ve Endustriyel Vana Sanayi Ticaret Anonim Sirketi filed Critical Dikkan Gemi Ve Endustriyel Vana Sanayi Ticaret Anonim Sirketi
Publication of WO2023069039A1 publication Critical patent/WO2023069039A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/224—Details of bearings for the axis of rotation

Definitions

  • the present invention relates to a double eccentric butterfly valve shaft structure with reduced fluid resistance and also provides fluid control and weight gain by using liquid and gas pipelines.
  • Butterfly valves are valves providing control of fluids that disable and enable the flow on the line by rotating 90° a flat throttle that is seated eccentrically or from its center. They have different driving systems such as hand wheel, electric, hydraulic or, pneumatic actuator. Butterfly valves are frequently preferred in the sector due to their advantages such as being light, having short assembly lengths, and enabling relatively free/comfortable passage of fluid.
  • the shaft in the butterfly valve body bearings and the throttle, whose angle can be adjusted by means of said shaft, are the moving components of the valve that limit or prevent the flow.
  • the throttle is fixed to the butterfly valve shaft, preventing it from coming out of the body and enabling it to operate in its current position.
  • the flow does not move with a uniform velocity distribution and a constant acceleration. Therefore, vortices occur in the flow and cause vibration in the flow line. In this case, the resulting vortices create a risk of damage to the throttle and shaft and cause irregular flow.
  • the shafts placed in the throttle bearings form a protrusion in the form of a throttle.
  • the valve flow cross-sectional area is narrowed in the regions where these shaft bearing protrusions are located opposite each other in the butterfly valve flow line.
  • Body bearings in butterfly valves prevent the shafts from being damaged against fluid pressure and retain the hydrodynamic throttle in place. All forces due to flow and fluid pressure are transmitted to the body bearings via shafts.
  • the shaft structures have been preferred as one-dimensional within the valve protrusions.
  • the throttle protrusions caused by the shafts used in the prior art cause high pressure loss values by reducing the flow cross-sectional area.
  • the flow coefficient and flow resistance values were compared by reviewing the state of the art.
  • the present invention solves all of the above-mentioned problems at the same time, and it is an innovative approach by changing the shaft structure in order to make the throttle shaft bearing smaller and developing a shaft structure whose diameter gradually decreases towards the center of the throttle due to the limited areas that can be developed in valve technologies.
  • the object of the present invention is to reduce the throttle protrusions caused by the shaft structure used in the available butterfly valves and to increase the flow area.
  • Figure - 1 illustrates the closed isometric general view of the double eccentric butterfly valve.
  • Figure - 2 illustrates the open isometric partial section view of the double eccentric butterfly valve.
  • Figure - 3 illustrates the flow sectional view of the double eccentric butterfly valve.
  • Figure - 4 illustrates the isometric sectional view of the double eccentric butterfly valve.
  • Figure - 5 illustrates the sectional detailed view of the double eccentric butterfly valve.
  • Figure - 6 illustrates the sectional view of bearings in the double eccentric butterfly valve.
  • Figure - 7 illustrates the close isometric sectional view of the sealing rubber and compression ring.
  • Figure - 8 illustrates the view of the stepped shaft structure.
  • Figure - 3 shows the inventive shaft structure, the diameter of which gradually decreases towards the center of the throttle.
  • the aforementioned shaft structure whose detailed explanation is given below, is described as a stepped shaft (3). ( Figure 8)
  • FIG - 1 shows the butterfly valve (1) that is used in liquid and gas pipelines and that provides fluid control.
  • the butterfly valve (1) in its most general form consists of the body (2), the throttle (3), and the shafts (4).
  • a shaft structure with at least two stages has been developed in order to minimize the effects of the throttle protrusions that adversely affect the flow, which are found in conventional butterfly valves.
  • the valve protrusions have been reduced by means of the stepped shaft structure by providing the same strength criteria.
  • the position of said hydrodynamic throttle (3) inside the body (2) is provided by the stepped shafts (4) seen in Figure 3 and Figure 5.
  • the hydrodimaic throttle (3) works in accordance with the functional movements thereof in the body in its position.
  • Said stepped shafts (4) contain at least one step whose diameter gradually decreases starting from the larger one.
  • the hydrodynamic throttle (3) whose hydrodynamic feature is improved by reducing the protrusion height of the throttle shows minimum resistance to the flow and increases the flow efficiency thereof by means of the special stepped structure of the stepped shafts (4).
  • the height of the junction of the parts has been reduced by means of the compatibility of the stepped shaft (4) and the hydrodynamic throttle (3), and the present invention improves the flow coefficient in a positive way.
  • the general position of the stepped shafts (4) and the pressure ring (7) can be seen in the double eccentric butterfly valve with the stepped shaft (4) structure shown in Figure - 2.
  • Said pressure ring (7) is positioned on the throttle in the inner section of the body (2).
  • the hydrodynamic throttle (3) seen in Figure 2 is positioned in the middle of the valve body (2) by means of the stepped shafts (4).
  • the stepped shafts (4) placed in the butterfly valve system provide the angular movement of the throttle (3), which has the duty of limiting or preventing the flow.
  • Minimization of the friction between said stepped shafts (4) and the bearings (5) is achieved by selecting the material of said stepped shafts (4) and the selflubricating preparation of said bearings (5) with the material selections.
  • the sealing rubber (6) structure which is seen in detail in Figure 7, provides sealing in the butterfly valve system.
  • Said sealing rubber (6) was positioned so as to fully circle around said throttle (3).
  • Said sealing rubber (6) forms the sealing region together with said pressure ring (7) and said hydrodynamic throttle (3). It was ensured that said sealing region elements are fully inserted in its place on said body (2), wherein leaks that may occur due to fluids are also prevented in the use of the butterfly valve in the flow line.
  • the subject of the invention was formed by attaching said hydrodynamic throttle (3) to the slots in said body (2) from both ends of said body (2) by means of said stepped shaft (4) which is supported in said body (2). Not slipping said stepped shafts (4) is ensured by means of the bearings (5), which have at least one on each side on said body (2). Said stepped shafts (4) are fully seated on said bearings
  • bearings (5) which enable said stepped shaft (4) structure to be seated into said body (2), reduce the roughness value by means of the material structure thereof, and the resistance to fluids is increased.
  • the production materials of said bearings (5) do not limit the production by allowing the use of alternative materials.
  • Said sealing rubber (6) and said compression ring (7) completely surround the inside of the body and complete the butterfly valve system.
  • the above-mentioned shaft structure does not limit production by allowing the use of alternative materials, and is made conical or stepped.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

La présente invention concerne une structure d'arbre de vanne papillon à double excentrique ayant une résistance au fluide réduite et fournit également une commande de fluide et un gain de poids en utilisant des canalisations de liquide et de gaz.
PCT/TR2022/050159 2021-10-22 2022-02-22 Vanne papillon à double excentrique à structure d'arbre étagée WO2023069039A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2021/016517A TR2021016517A2 (tr) 2021-10-22 2021-10-22 Kademeli̇ mi̇l yapisina sahi̇p çi̇ft eksantri̇k kelebek vana
TR2021/016517 2021-10-22

Publications (1)

Publication Number Publication Date
WO2023069039A1 true WO2023069039A1 (fr) 2023-04-27

Family

ID=85113378

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/TR2022/050159 WO2023069039A1 (fr) 2021-10-22 2022-02-22 Vanne papillon à double excentrique à structure d'arbre étagée

Country Status (2)

Country Link
TR (1) TR2021016517A2 (fr)
WO (1) WO2023069039A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3784157A (en) * 1972-05-15 1974-01-08 Fmc Corp Butterfly valve stem seal energizer
US4214731A (en) * 1977-04-01 1980-07-29 Kubota Ltd. Butterfly valve
US5275375A (en) * 1992-06-17 1994-01-04 Solex Rotary throttle member and a throttle body for an internal combustion engine
US6598854B1 (en) * 1998-10-21 2003-07-29 Filterwerk Mann & Hummel Gmbh Flap mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3784157A (en) * 1972-05-15 1974-01-08 Fmc Corp Butterfly valve stem seal energizer
US4214731A (en) * 1977-04-01 1980-07-29 Kubota Ltd. Butterfly valve
US5275375A (en) * 1992-06-17 1994-01-04 Solex Rotary throttle member and a throttle body for an internal combustion engine
US6598854B1 (en) * 1998-10-21 2003-07-29 Filterwerk Mann & Hummel Gmbh Flap mechanism

Also Published As

Publication number Publication date
TR2021016517A2 (tr) 2021-11-22

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