NL2021203B1 - Rotatable ball valve for controlling flow of fluids containing solid particles - Google Patents

Rotatable ball valve for controlling flow of fluids containing solid particles Download PDF

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Publication number
NL2021203B1
NL2021203B1 NL2021203A NL2021203A NL2021203B1 NL 2021203 B1 NL2021203 B1 NL 2021203B1 NL 2021203 A NL2021203 A NL 2021203A NL 2021203 A NL2021203 A NL 2021203A NL 2021203 B1 NL2021203 B1 NL 2021203B1
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NL
Netherlands
Prior art keywords
valve
valve body
ball
bore
valve ball
Prior art date
Application number
NL2021203A
Other languages
Dutch (nl)
Inventor
Dana Jaroslav
Original Assignee
Cs Business Services B V
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 Cs Business Services B V filed Critical Cs Business Services B V
Priority to NL2021203A priority Critical patent/NL2021203B1/en
Application granted granted Critical
Publication of NL2021203B1 publication Critical patent/NL2021203B1/en

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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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0647—Spindles or actuating means

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)

Abstract

A valve for controlling fluid flows containing solid particles. A valve ball is suspended in a valve body for rotation about a vertical axis of rotation between an open position, in which an entry port and an exit port are in fluid communication via a passage through the ball and leaving a clearance between the valve ball and the valve body allowing fluid to flow from the entry port to the exit port between the valve ball and the valve body, and a closed position in which a sealing surface is in sealing contact with at least the entry port or the exit port. A trunnion at a bottom side of the valve ball projects from the valve body upwardly into a bore in the valve ball and is fixedly positioned relative to the valve body.

Description

Θ 2021203 ©B1 OCTROOI (2?) Aanvraagnummer: 2021203 (51) Int. Cl.:
F16K5/06 (2018.01) (22) Aanvraag ingediend: 28 juni 2018 (30) Voorrang:
(U) Aanvraag ingeschreven:
januari 2020 (43) Aanvraag gepubliceerd:
(73) Octrooihouder(s):
CS Business Services B.V. te Appingedam (72) Uitvinder(s):
Jaroslav Dana te Appingedam (74) Gemachtigde:
ir. H.A. Witmans c.s. te Den Haag
47) Octrooi verleend:
januari 2020 (45) Octrooischrift uitgegeven:
januari 2020
54) Rotatable ball valve for controlling flow of fluids containing solid particles
57) A valve for controlling fluid flows containing solid particles. A valve ball is suspended in a valve body for rotation about a vertical axis of rotation between an open position, in which an entry port and an exit port are in fluid communication via a passage through the ball and leaving a clearance between the valve ball and the valve body allowing fluid to flow from the entry port to the exit port between the valve ball and the valve body, and a closed position in which a sealing surface is in sealing contact with at least the entry port or the exit port. A trunnion at a bottom side of the valve ball projects from the valve body upwardly into a bore in the valve ball and is fixedly positioned relative to the valve body.
NLB1 2021203
Dit octrooi is verleend ongeacht het bijgevoegde resultaat van het onderzoek naar de stand van de techniek en schriftelijke opinie. Het octrooischrift komt overeen met de oorspronkelijk ingediende stukken.
TITLE: Rotatable ball valve for controlling flow of fluids containing solid particles
FIELD AND BACKGROUND OF THE INVENTION
The invention relates to a valve according to the introductory portion of claim 1.
Such valves are for instance used in the extraction from the earth and the processing of subterranean fluid natural resources such as oil and gas, for instance in drilling and production systems, transport pipelines and refineries. The valves are used to control the flow of fluids through pipelines in which the valves are mounted. In many applications, such valves operate under extreme conditions such as pressures between 5 and 25,000 bar, flow speeds of up to 800 m/s and temperatures of -196 - 938 °C. In addition, in many applications solid particles are entrained in the fluid flow.
An example of such a valve which is known from practice and which is commercially available is shown in Fig. 1.
Although such valves are generally designated as ball valves having a valve ball that is rotatable between an open position allowing flow through the valves and a closed position blocking flow through the valve, the valve ball is typically not of an exactly spherical ball shape, but only generally ball shaped and typically provided with a passage through which fluid can flow if the valve ball is in the open position, sealing surfaces and slightly recessed surface portion, for instance shaped to stay clear of surfaces of a valve cavity in which the valve ball is located, while the ball is rotated.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a valve for controlling fluid flows containing solid particles with an increased life span.
According to the invention, this object is achieved by providing a valve according to claim 1.
Because the trunnion projects from the valve body upwardly into a bore in the valve body, each time fluid flow is stopped particles present in the bore tend to sink out of the bore into the clearance space between the valve ball and the valve body from where the particles are flushed when fluid flow is allowed to resume. It is thus counteracted that hard solid particles become caught between the trunnion and the bore, in particular when the valve is closed or opened, and cause accelerated wear of mating trunnion and bore surfaces. Because the trunnion is fixedly positioned relative to the valve body, the trunnion is stationary relative to the valve body, so any hard solid particles sinking to a foot portion of the trunnion do not cause accelerated wear of the trunnion or the valve body.
Particular elaborations and embodiments of the invention as well as an example of a prior art valve are set forth in the dependent claims.
Further features, effects and details of the invention appear from the detailed description and the drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a cross-sectional view along a vertical center plane of a prior art valve;
Fig. 2 is a cross-sectional view along a vertical center plane of an example of a valve according to the invention; and
Fig. 3 is an enlarged view of a portion III of Fig. 2.
DETAILED DESCRIPTION
In Fig. 1, a valve 1 for controlling fluid flows containing solid particles, which is commercially available, is shown.
The valve 1 has a valve body 2 with an entry port 3, an exit port 4 and a sealing surface 14. The exit port 4 extends through and is bounded by a valve seat member 5. In the valve body 2, a valve ball 6 is arranged. A passage 8 in the form of a bore extends through the valve ball 6.
The valve ball 6 is suspended in the valve body 2 for rotation about a vertical axis of rotation 9 via a valve ball suspension 10, 11. The valve ball 6 is rotatable between a closed position (shown in Fig. 1 and an open position (not shown in Fig. 1).
If the valve body 2 is in the open position, the entry port 3 and the exit port 4 are in fluid communication with each other via the passage 8 and a clearance 7 is left between the valve ball 6 and the valve body 2. Thus, fluid can flow both through the valve ball 6 and through the clearance between the valve ball 6 and the valve body 2.
If the valve body 2 is in the closed position, the entry port 3 and the exit port 4 are free from the passage 8 and the sealing surface 14 is in sealing contact with the valve seat member 5 of the exit port 4.
The valve ball suspension includes a trunnion 11 at a bottom side of the valve ball 6 and a valve ball operating stem 10 engaging the valve ball 6 for driving rotation of the valve ball 6 between the open an closed positions. The valve ball 6 may be rotated in response to rotation of the stem 10 or in response to other, e.g. axial, movement of the stem which is converted into rotational movement of the valve ball.
The trunnion 11 is fixed to the valve ball 6 and projects downwards through the clearance 7 into a bore 12 in the valve body 2. The bore 12 is lined with a lining 13 of a material which, when in sliding contact with the trunnion 11 is more wear resistant than the material of which a major portion of the valve body 2 is made. Suitable sliding bearing material combinations are commercially available. The valve ball operating stem 1 may for instance be driven manually, e.g. by a hand wheel or by an electric or hydraulic motor.
In Figs. 2 and 3, an example of a valve 51 according to invention is shown. Parts 2, 3, 4, 5, 8, 9, 10 of the example that are identical to corresponding parts of the valve shown in Fig. 1 are designated by the same reference numbers as in Fig. 1.
The valve according to the example shown in Figs. 2 and 3 has a trunnion 61 that is mounted fixedly to the valve body 2 and projects from the valve body 2 upwardly into a bore 62 in the valve ball 66.
As long as the valve ball 66 is in a partially or completely open position, fluid flow through the clearance is generally so violent, that solid particles remain evenly distributed in the fluid and are entrained with the flow. However, when the valve ball 66 is moved into the closed position, fluid flow in the clearance 7 is stopped and particles present in the bore 62 tend to sink out of the bore 62 into the clearance space between the valve ball 66 and the valve body 2. It is thus at least counteracted that solid particles stay in the bore 62 and cause a grinding effect when the valve ball 66 is rotated towards an open position again. When the valve ball 66 is rotated into a partially or completely open position, fluid flow is allowed to resume and any solid particles that may have sunk out of the fluid are flushed away by the fluid flow. It is thus counteracted that hard solid particles become caught between the trunnion 61 and the bore 62, in particular when the valve ball 66 is closed or opened, and cause accelerated wear of mating surfaces of the trunnion 66 and the bore 62.
Because the trunnion 61 is fixedly positioned relative to the valve body 2, the trunnion 61 is stationary relative to the valve body 2, so any hard solid particles sinking to a foot portion of the trunnion 61 do not cause accelerated wear of the trunnion 61 or the valve body 2.
Clinging of solid particles between mating surface of the trunnion and the bore if the valve ball 66 is in the closed position is counteracted because circumferential surface portions of the trunnion 61 and the bore 62 diverge towards a lower end of the bore 62. Solid particles are thus easily released from a space between the trunnion 61 and the bore 62.
The bore 62 surface is formed by a surface of an insert 63 in the valve ball 66. The materials of the trunnion 61 and the insert 63 are of a particularly wear resistant sliding bearing material combination. Depending on the materials of which the trunnion 61 and the valve ball 66 are made, an insert such as insert 63 can be dispensed with and the trunnion can contact surfaces in a hole in the valve ball directly.
Release of solid particles from the bore 62 is supported particularly effectively if the circumferential surface portions of the trunnion 61 and of the bore 62 diverge up to an enclosed angle of at least 5° and more preferably at least 10°.
The trunnion 61 is part of a trunnion body 65 sunk and fixed in the valve body 2. A portion of the trunnion body 65 sunk in the valve body 2 has a larger diameter than the diameter of the trunnion 61 and has a free upwardly facing surface 67 flush with adjacent surrounding free upwardly facing surface portions 68 of the valve body 2. Thus, particles sunk to a deepest position inside the valve body 2 are flushed away particularly effectively.
For flushing away of particles from an area where the trunnion 61 meets the free upwardly facing surface 67 from which the trunnion 61 projects, it is preferred that, seen in cross-section along a plane through a center line 9 of the trunnion 61, this transition has a radius of 10 to 150 mm.
The valve body 6 has a deflector 69 extending closely along sections of the circumference of the bore 62 facing in directions with a directional component towards the entry port 3. The deflector is shaped and dimensioned for diverting fluid flow downward, away from a lower end of the bore 62. Thus speeds of fluid flow between the trunnion 61 and the bore 62 are reduced, so that any entrained solid particles are propelled into the space between the trunnion 61 and the bore 62 with less energy and are less likely to become stuck between the trunnion 61 and the bore 62 so firmly that accelerated wear of the trunnion 61 and the bore 62 may be caused when the valve ball 66 is moved into the closed position and/or that the solid particles do not sink out after the valve has been closed.
Valves according to the invention can be provided in a wide range of dimensions, but are particularly advantageous in applications requiring port 5 diameters of about 2.5 cm to 90 cm.

Claims (6)

ConclusiesConclusions 1. Klep voor het besturen van fluïdumstromen die vaste deeltjes bevatten, waarbij de klep omvat:A valve for controlling fluid streams containing solid particles, the valve comprising: een kleplichaam met een ingangspoort, een uitgangspoort en een afdichtoppervlak; en een klepkogel in het kleplichaam met een doorlaat die zich uitstrekt door de klepkogel; en een klepkogelophanging via welke de klepkogel is opgehangen in het kleplichaam voor rotatie om een verticale rotatie-as tussena valve body with an entrance port, an exit port and a sealing surface; and a valve ball in the valve body with a passage extending through the valve ball; and a valve ball suspension via which the valve ball is suspended in the valve body for rotation about a vertical axis of rotation between - een open positie, waarin de ingangspoort en de uitgangspoort via de doorlaat in fluïdumcommunicatie zijn en een speling wordt gelaten tussen de klepkogel en het kleplichaam die fluïduinstroom van ingangspoort naar de uitgangspoort tussen de klepkogel en het kleplichaam toelaat, en- an open position, in which the input port and the output port are in fluid communication via the passage and a clearance is left between the valve ball and the valve body that allows fluid flow from the input port to the output port between the valve ball and the valve body, and - een gesloten positie waarin ten minste de ingangspoort of de uitgangspoort vrij is van de doorlaat en het afdichtoppervlak in afdichtend contact is met de ten minste ene van de ingangspoort of de uitgangspoort die vrij is van de doorlaat, en waarbij de ophanging een draaitap aan een onderzijde van de klepkogel omvat;- a closed position in which at least the entrance port or the exit port is free from the passage and the sealing surface is in sealing contact with the at least one of the entrance port or the exit port that is free from the passage, and wherein the suspension pivots on a bottom of the valve ball; met het kenmerk, dat de draaitap van het kleplichaam omhoog in een boring in de klepkogel uitsteekt en ten opzichte van het kleplichaam vast is gepositioneerd.characterized in that the pivot pin of the valve body projects up into a bore in the valve ball and is fixedly positioned with respect to the valve body. 2. Klep volgens conclusie 1, waarbij omtreksoppervlaksgedeeltes van de draaitap en de boring naar een ondereind van de boring divergeren.The valve of claim 1, wherein circumferential surface portions of the pivot and bore diverge toward a lower end of the bore. 3. Klep volgens conclusie 2, waarbij de omtreksoppervlaksgedeeltes divergeren tot een ingesloten hoek van ten minste 5°.The valve of claim 2, wherein the peripheral surface portions diverge to an enclosed angle of at least 5 °. 4. Klep volgens een der voorgaande conclusies, waarbij de draaitap deel uitmaakt van een draaitaplichaam verzonken en gefixeerd in het kleplichaam, waarbij een gedeelte van het draaitaplichaam dat is verzonken in het kleplichaam een grotere diameter heeft dan de diameter van de draaitap enValve according to any one of the preceding claims, wherein the turning pin forms part of a turning pin body sunk and fixed in the valve body, wherein a portion of the turning pin body sunk into the valve body has a larger diameter than the diameter of the turning pin and 5 een vrij omhoog gekeerd oppervlak uitgevlakt met een nabijgelegen omgevend vrij omhoog gekeerd oppervlaksgedeelte van het kleplichaam heeft.5 has a free upwardly facing surface flattened with a nearby surrounding free upwardly facing surface portion of the valve body. 5. Klep volgens een der voorgaande conclusies, waarbij, gezien in dwarsdoorsnede langs een vlak door een hartlijn van de draaitap, eenValve according to any one of the preceding claims, wherein, viewed in cross section along a plane through a center line of the turning pin, a 10 overgang van de draaitap naar een oppervlak vanwaar de draaitap uitsteekt een radius heeft van 10 tot en met 150 mm.The transition from the turning pin to a surface from which the turning pin protrudes has a radius of 10 to 150 mm. 6. Klep volgens een der voorgaande conclusies, waarbij het kleplichaam een deflector heeft die zich dicht langs gedeeltes van de omtrek van de boringA valve according to any one of the preceding claims, wherein the valve body has a deflector which is close to portions of the circumference of the bore 15 die gekeerd zijn in richtingen met een richtingscomponent naar de ingangspoort uitstrekt, waarbij de deflector is gevormd en gedimensioneerd voor het naar omlaag van een ondergelegen gedeelte van de boring af afbuigen van fhiïdumstroming.15 facing the input port in directions with a directional component, the deflector being formed and dimensioned to deflect downward flow of phiic fluid flow from a lower portion of the bore. 1/31/3 Prior artPrior art
NL2021203A 2018-06-28 2018-06-28 Rotatable ball valve for controlling flow of fluids containing solid particles NL2021203B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL2021203A NL2021203B1 (en) 2018-06-28 2018-06-28 Rotatable ball valve for controlling flow of fluids containing solid particles

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Application Number Priority Date Filing Date Title
NL2021203A NL2021203B1 (en) 2018-06-28 2018-06-28 Rotatable ball valve for controlling flow of fluids containing solid particles

Publications (1)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1104872A (en) * 1954-05-17 1955-11-24 Quick-closing gate valve
EP2667067A1 (en) * 2012-05-23 2013-11-27 Cameron International Corporation Valve with adaptive facial sealing ring

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1104872A (en) * 1954-05-17 1955-11-24 Quick-closing gate valve
EP2667067A1 (en) * 2012-05-23 2013-11-27 Cameron International Corporation Valve with adaptive facial sealing ring

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Legal Events

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PD Change of ownership

Owner name: CONTROL SEAL VME B.V.; NL

Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), ASSIGNMENT; FORMER OWNER NAME: CS BUSINESS SERVICES B.V.

Effective date: 20220502

PD Change of ownership

Owner name: CONTROL SEAL VME B.V.; NL

Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), ASSIGNMENT; FORMER OWNER NAME: CS BUSINESS SERVICES B.V.

Effective date: 20231122