US20200149528A1 - Modular Gland Arrangements For A Plug Valve - Google Patents
Modular Gland Arrangements For A Plug Valve Download PDFInfo
- Publication number
- US20200149528A1 US20200149528A1 US16/747,275 US202016747275A US2020149528A1 US 20200149528 A1 US20200149528 A1 US 20200149528A1 US 202016747275 A US202016747275 A US 202016747275A US 2020149528 A1 US2020149528 A1 US 2020149528A1
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- US
- United States
- Prior art keywords
- kit
- insert elements
- valve
- seals
- endless
- Prior art date
- Legal status (The legal status 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 status listed.)
- Abandoned
Links
- 210000004907 gland Anatomy 0.000 title 1
- 239000012530 fluid Substances 0.000 claims abstract description 58
- 238000000034 method Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 description 22
- 230000003628 erosive effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F01B3/0002—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
- F01B3/0017—Component parts, details, e.g. sealings, lubrication
- F01B3/0029—Casings, housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/22—Arrangements for enabling ready assembly or disassembly
-
- 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
- F16K5/02—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 conical surfaces; Packings therefor
- F16K5/0257—Packings
- F16K5/0271—Packings between housing and plug
-
- 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
- F16K5/04—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 cylindrical surfaces; Packings therefor
- F16K5/0457—Packings
- F16K5/0471—Packings between housing and plug
-
- 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
- F16K5/04—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 cylindrical surfaces; Packings therefor
- F16K5/0492—Easy mounting or dismounting means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/2607—Surface equipment specially adapted for fracturing operations
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
- F16K3/243—Packings
Definitions
- the present invention is directed to a valve comprising a body, a rotatable plug element, and plurality of insert elements.
- the body comprises a flow passage including an inlet passage and an outlet passage, and an enlarged internal chamber intersecting the flow passage.
- the rotatable plug element is positioned within the chamber and has a fluid passage extending therethrough.
- the plurality of insert elements are positioned within the chamber and cooperate to at least partially surround the plug element.
- Each insert element has a fluid opening extending therethrough and each has a first endless groove surrounding the fluid opening and a second endless groove surrounding the first groove.
- One and only one seal is positioned in a selected one of the first and second grooves of each insert.
- the present invention is also directed to a kit comprising a valve body, a flow passage, a rotatable plug element, a plurality of first insert elements, and a plurality of second insert elements.
- the valve body comprises a flow passage that includes an inlet passage and an outlet passage, and an enlarged internal chamber that intersects the flow passage.
- the rotatable plug element is positioned within the chamber and has a fluid passage extending therethrough.
- the plurality of first insert elements are sized to surround the plug element within the chamber.
- Each of the first insert elements has a fluid opening extending therethrough and an endless groove surrounding that fluid opening.
- the plurality of second insert elements are sized to surround the plug element within the chamber.
- Each second insert element has a fluid opening extending therethrough, an endless groove surrounding that fluid opening, and a size and shape that matches that of the corresponding first insert element.
- the endless groove of each first insert element would fully surround or be fully surrounded by the endless groove of its corresponding second insert element if those insert elements were superimposed.
- FIG. 1 is a side view of a plug valve known in the art.
- the valve body has been partially cut away to better display the internal components.
- FIG. 2 is a side view of an alternative embodiment of a plug valve known in the art.
- the valve body has been partially cut away to better display the internal components.
- FIG. 3 is a perspective view of an insert element.
- FIG. 4 is a perspective view of the insert element of FIG. 3 with a seal positioned in a first groove.
- FIG. 5 is a perspective view of the insert element of FIG. 3 with a seal positioned in a second groove.
- FIG. 6 is a perspective view of the insert element of FIG. 3 with a seal positioned in a third groove.
- FIG. 7 is a side view of the plug valve of FIG. 2 .
- the insert elements are those shown in FIG. 4 .
- FIG. 8 is a side view of the plug valve of FIG. 2 .
- the insert elements are those shown in FIG. 5 .
- FIG. 9 is a side view of the plug valve of FIG. 2 .
- the insert elements are those shown in FIG. 6 .
- FIG. 10 is a perspective view of a first insert element. Together with the second and third insert elements shown in FIGS. 11 and 12 , it forms a kit of a third embodiment of insert elements.
- FIG. 11 is a perspective view of a second insert element.
- FIG. 12 is a perspective view of a third insert element.
- FIG. 13 is a side view of the plug valve of FIG. 2 .
- the insert elements are those shown in FIG. 10 .
- FIG. 14 is a side view of the plug valve of FIG. 2 .
- the insert elements are those shown in FIG. 11 .
- FIG. 15 is a side view of the plug valve of FIG. 2 .
- the insert elements are those shown in FIG. 12 .
- High pressure plug valves are typically used in oil and gas operations to control the flow of fluid throughout piping systems.
- the valve has a flow passage that may be selectively opened and closed in order to control the flow of fluid through the valve.
- Plug valves used in high pressure oil and gas operations must be able to withstand fluid pressures up to at least 22,500 pounds per square inch. However, the plug valves are typically used with fluid pressures around 15,000 pounds per square inch.
- the plug valve 10 comprises a body 12 having a flow passage 14 and an enlarged internal chamber 16 .
- the flow passage 14 intersects the internal chamber 16 and includes an inlet passage 18 and an outlet passage 20 formed on opposite sides of the chamber 16 .
- the inlet and outlet passages 18 and 20 may be connected to a piping system (not shown).
- the plug valve 10 further comprises a rotatable plug element 22 positioned within the internal chamber 16 .
- the plug element 22 is secured within the chamber 16 by a retaining nut 23 .
- a fluid passage 24 extends through the plug element 22 .
- a pair of journals 26 and 28 are rigidly attached to opposite sides of the plug element 22 and extend out a top surface 30 and a bottom surface 32 of the body 12 .
- the plug element 22 is rotated by rotating the journals 26 and 28 .
- the plug element 22 is rotated so that its fluid passage 24 is in-line with the flow passage 14 .
- the plug element 22 is rotated so that its fluid passage 24 is not in-line with the flow passage 14 .
- the plug valve 10 further comprises a plurality of insert elements 34 positioned within the chamber 16 and cooperating to at least partially surround the plug element 22 .
- Each plug valve 10 holds at least two insert elements 34 .
- the insert elements 34 have an inner surface 36 and an outer surface 38 .
- the inner surface 36 surrounds the plug element 22 and the outer surface 38 engages with the inner walls of the chamber 16 .
- a fluid opening 40 interconnects the inner and outer surfaces 36 and 38 and has a fully closed cross-sectional profile. The fluid openings 40 are in-line with the flow passage 14 when the elements 34 are positioned within the chamber 16 .
- the insert elements 34 each comprise an endless groove 42 surrounding the fluid opening 40 .
- An annular seal 44 may be positioned within the groove 42 .
- the seal 44 blocks fluid from leaking into the internal chamber 16 .
- the internal walls of the chamber 16 directly across from the position of the seals 44 act as sealing surfaces 46 for the seals 44 when the insert elements 34 are positioned within the chamber 16 .
- the plug valve 10 shown in FIG. 1 has a tapered internal chamber 16 . Due to this, the outer surface 38 of the insert elements 34 are tapered so as to be closely received within the chamber 16 .
- the elements 34 have a concave inner surface 36 and a spaced outer surface 38 that is congruent with the curved side of a cone.
- the plug valve 50 comprises a body 52 having a flow passage 54 and an enlarged internal chamber 56 .
- the plug valve 50 is identical to the plug valve 10 , except that it has a cylindrical inner chamber 56 , rather than a cone-shaped or tapered inner chamber 16 ( FIG. 1 ).
- a plurality of insert elements 58 are shown positioned around a rotatable plug element 60 within the internal chamber 56 .
- the outer surfaces 62 of the insert elements 58 are not tapered so that they may be closely received within the non-tapered chamber 56 .
- the insert elements 58 have a concave inner surface 64 and a spaced outer surface 62 that is congruent with the curved side of a cylinder.
- the insert elements 58 each comprises an endless groove 66 surrounding a fluid opening 68 .
- An annular seal 70 may be positioned within the groove 66 to prevent fluid from leaking into the internal chamber 56 .
- the internal walls of the chamber 56 directly across from the position of the seals 70 act as sealing surfaces 72 for the seals 70 when the insert elements 58 are positioned within the chamber 56 .
- plug valves 10 and 50 are susceptible to corrosive and/or abrasive fluid becoming trapped between the seals 44 or 70 and the sealing surfaces 46 or 72 of the chamber 16 or 56 . This may cause the sealing surfaces 46 or 72 to erode over time and prevent the seals 44 or 70 from tightly engaging the sealing surfaces 46 or 72 . Fluid may leak into the chamber 16 or 56 if the seals 44 or 70 cannot effectively seal against the sealing surfaces 46 or 72 . If fluid leaks into the chamber 16 or 56 , the plug valve 10 or 50 may not operate properly and may need to be replaced.
- the present invention is directed to a system including a plurality of insert elements 34 or 58 that permit the seals 44 or 70 to be relocated within the chamber 16 or 56 over time. Relocating the seals 44 or 70 also relocates the sealing surfaces 46 or 72 . Thus, if the original sealing surfaces 46 or 72 suffer erosion, the seals 44 or 70 can be moved to engage with different sealing surfaces 46 or 72 in the chamber 16 or 56 . Such relocation will help extend the life of the plug valve 10 or 50 .
- the insert elements 100 have a spaced outer surface 102 and a concave inner surface 104 .
- the insert elements 100 may be configured to fit within the tapered chamber 16 ( FIG. 1 ) or the cylindrical chamber 56 ( FIG. 2 ).
- a fluid opening 106 is formed in the center of the elements 100 .
- a first endless groove 108 is formed in the outer surface 102 surrounding the opening 106 .
- a second endless groove 110 formed in the outer surface 102 surrounds the first groove 108 , and a third endless groove 112 formed in the outer surface 102 surrounds the second groove 110 .
- Each of the grooves 108 , 110 , and 112 is characterized by two side walls 114 joined by a base 116 .
- each of the grooves 108 , 110 , and 112 follow a circular path around the fluid opening 106 .
- each of the grooves 108 , 110 , and 112 may vary in size and shape and follow a path of any shape or size desired around the fluid opening 106 .
- one or all of the grooves 108 , 110 , or 112 may follow a rectangular path around the fluid opening 106 .
- a single seal may be positioned within each one of the grooves 108 , 110 , and 112 formed in the insert element 100 .
- a first seal 118 A is positioned within the first groove 108 in FIG. 4 .
- a second seal 118 B is positioned within the second groove 110 in FIG. 5
- a third seal 118 C is positioned in the third groove 112 in FIG. 6 .
- the seals 118 A, 118 B, or 118 C surround the fluid opening 106 when positioned in the grooves 108 , 110 , and 112 .
- the insert elements 100 are shown positioned within the chamber 56 of the plug valve 50 .
- the operation described with reference to plug valve 50 is identical to the operation used with the plug valve 10 ( FIG. 1 ).
- the first seal 118 A is positioned within the first groove 108 of the insert elements 100 .
- the insert elements 100 are positioned within the chamber 56 so that they surround the plug element 6 o and their fluid openings 106 are in-line with the flow passage 54 ( FIG. 7 ).
- the seals 118 A tightly engage the sealing surfaces 72 on the walls of the internal chamber 56 .
- High pressure fluid is passed through the plug valve 50 .
- the sealing surfaces 72 for the first seals 118 A will start to erode. If the first seals 118 A start to leak, the flow of fluid into the plug valve 50 is stopped.
- the insert elements 100 are removed from the chamber 56 and the first seals 118 A are removed from the first grooves 108 .
- the second seals 118 B are positioned in the second grooves 110 and the insert elements 100 are re-positioned within the chamber 56 ( FIG. 8 ) and operations may resume. Because the position of the second seals 118 B is spaced from the position of the first seals 118 A, the second seals 118 B will have new non-eroded sealing surfaces 72 . Thus, the second seals 118 B will offer enhanced resistance from leakage into the chamber 56 .
- the second seals 118 B may begin to leak.
- the flow of fluid in the plug valve 50 is again stopped and the insert elements 100 are removed.
- the second seals 118 B are removed from the insert elements 100 and the third seals 118 C are positioned within the third grooves 112 .
- the insert elements 100 are then re-positioned within the chamber 56 ( FIG. 9 ) and operations may resume. Because the position of the third seals 118 C is spaced from the position of the second seals 118 B, the third seals 118 C will have new non-eroded sealing surfaces 72 . Thus, the third seals 118 C will offer enhanced resistance from leakage into the chamber 56 .
- the operator may choose any order of positioning a single seal within any single one of the grooves desired.
- the order of operation described above is non-limiting and is just one method of using the inserts 100 .
- the operator may start the operation by positioning the third seal 118 C in the third groove 112 , rather than starting with the first seal 118 A in the first groove 108 .
- each plug valve 10 and 50 uses at least two different insert elements 100 , the above method may be employed at different times for each element 100 , depending on the wear incurred by the sealing surface 72 for the seal 118 within each element.
- the second embodiment 200 utilizes a kit comprising multiple insert elements 202 , 204 , and 206 .
- the insert elements 200 have a spaced outer surface 208 and a concave inner surface 210 .
- the insert elements 200 may be configured to fit within the tapered chamber 16 ( FIG. 1 ) or the cylindrical chamber 56 ( FIG. 2 ).
- the inserts 200 are identical in size and shape to the inserts 100 .
- the inserts 200 include a first insert element 202 , a second insert element 204 , and a third insert element 206 .
- Each of the insert elements 202 , 204 , and 206 has a single endless groove 212 , 214 , or 216 formed in its outer surface 208 and surrounding its fluid opening 218 .
- Each of the grooves 212 , 214 , and 216 is characterized by two side walls 220 joined by a base 222 .
- the first insert element 202 has a first groove 212 .
- the second insert element 204 has a second groove 214 that is outwardly spaced from the position of the first groove 212 in the first insert element 202 .
- the third insert element 206 has a third groove 216 that is outwardly spaced from the position of the second groove 214 .
- the first groove 212 is positioned nearest the fluid opening 218
- the third groove 216 is positioned nearest the edge of its respective insert element.
- each of the grooves 212 , 214 , and 216 is configured so that it would be fully surrounded or fully surround one another if the insert elements 202 , 204 , and 206 were superimposed. Like the grooves 108 , 110 , and 112 ( FIG. 3 ), each of the grooves 212 , 214 , and 216 may vary in size, shape, and path as long as each of the grooves are spaced from one another and fully surround the fluid opening 218 . A single seal may be positioned within each one of the grooves 212 , 214 , and 216 .
- FIGS. 13-15 the insert elements 200 are shown positioned within the chamber 56 of the plug valve 50 .
- the operation described with reference to plug valve 50 is identical to the operation used with the plug valve 10 ( FIG. 1 ).
- FIGS. 13-15 show a first seal 224 A positioned in the first groove 212 , a second seal 224 B positioned in the second groove 214 , and a third seal 224 C positioned in the third groove 216 .
- the operator will install the first insert elements 202 into the chamber 56 so that they surround the plug element 60 and their fluid openings 218 are in-line with the flow passage 54 ( FIG. 13 ).
- the first seals 224 A tightly engage the sealing surfaces 72 on the wall of the internal chamber 56 .
- High pressure fluid is passed through the plug valve 50 . Over time, the sealing surfaces 72 for the first seals 224 A will start to erode. If the first seals 224 A start to leak, the flow of fluid into the plug valve 50 is stopped. The first insert elements 202 are removed from the chamber 56 and replaced with the second insert elements 204 ( FIG. 14 ).
- the second seals 224 B will have new non-eroded sealing surfaces 72 in the chamber 56 .
- the second seals 224 B will offer enhanced resistance from leakage into the chamber 56 .
- the second seals 224 B may begin to leak.
- the flow of fluid in the plug valve 50 is again stopped and the insert elements 204 are removed and replaced with the third insert elements 206 ( FIG. 15 ). Because the position of the third seals 224 C on the third insert elements 206 is spaced from the first and second seals 224 A and 224 B on the first and second insert elements 202 and 204 , the third seals 224 C will have new non-eroded sealing surfaces 72 . Thus, the third seals 224 C will offer enhanced resistance from leakage into the chamber 56 .
- the operator may choose any order of using the insert elements 200 desired.
- the order of operation described above is non-limiting and is just one method of using the insert elements 200 .
- the operator may start the operation by positioning the third insert element 206 into the chamber 56 , rather than starting by positioning the first insert element 202 into the chamber 56 .
- insert elements 200 may be employed using only two different insert elements 200 or more than three different insert elements 200 . Once the seals 224 on the final insert elements no longer seal properly, the plug valve 50 will likely need to be replaced. Because each plug valve 10 or 50 uses at least two different insert elements 200 , the above method may be employed at different times for each element 200 , depending on the wear incurred by the sealing surfaces 46 or 72 for the seal 224 within each element.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Reciprocating Pumps (AREA)
- Sliding Valves (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Gasket Seals (AREA)
- Multiple-Way Valves (AREA)
Abstract
Insert elements that may be positioned within a high pressure plug valve. The elements have two or more recessed grooves formed around the fluid opening of the elements. The grooves are spaced from one another. A seal is placed in one and only one of the grooves. As wear occurs, the seal is relocated to one of the other grooves. Instead of a series of spaced grooves in a single insert element, a kit may be formed from two or more otherwise identical insert elements, each with a single recessed groove at a different position around the fluid opening.
Description
- The present invention is directed to a valve comprising a body, a rotatable plug element, and plurality of insert elements. The body comprises a flow passage including an inlet passage and an outlet passage, and an enlarged internal chamber intersecting the flow passage. The rotatable plug element is positioned within the chamber and has a fluid passage extending therethrough. The plurality of insert elements are positioned within the chamber and cooperate to at least partially surround the plug element. Each insert element has a fluid opening extending therethrough and each has a first endless groove surrounding the fluid opening and a second endless groove surrounding the first groove. One and only one seal is positioned in a selected one of the first and second grooves of each insert.
- The present invention is also directed to a kit comprising a valve body, a flow passage, a rotatable plug element, a plurality of first insert elements, and a plurality of second insert elements. The valve body comprises a flow passage that includes an inlet passage and an outlet passage, and an enlarged internal chamber that intersects the flow passage. The rotatable plug element is positioned within the chamber and has a fluid passage extending therethrough. The plurality of first insert elements are sized to surround the plug element within the chamber. Each of the first insert elements has a fluid opening extending therethrough and an endless groove surrounding that fluid opening. The plurality of second insert elements are sized to surround the plug element within the chamber. Each second insert element has a fluid opening extending therethrough, an endless groove surrounding that fluid opening, and a size and shape that matches that of the corresponding first insert element. The endless groove of each first insert element would fully surround or be fully surrounded by the endless groove of its corresponding second insert element if those insert elements were superimposed.
-
FIG. 1 is a side view of a plug valve known in the art. The valve body has been partially cut away to better display the internal components. -
FIG. 2 is a side view of an alternative embodiment of a plug valve known in the art. The valve body has been partially cut away to better display the internal components. -
FIG. 3 is a perspective view of an insert element. -
FIG. 4 is a perspective view of the insert element ofFIG. 3 with a seal positioned in a first groove. -
FIG. 5 is a perspective view of the insert element ofFIG. 3 with a seal positioned in a second groove. -
FIG. 6 is a perspective view of the insert element ofFIG. 3 with a seal positioned in a third groove. -
FIG. 7 is a side view of the plug valve ofFIG. 2 . The insert elements are those shown inFIG. 4 . -
FIG. 8 is a side view of the plug valve ofFIG. 2 . The insert elements are those shown inFIG. 5 . -
FIG. 9 is a side view of the plug valve ofFIG. 2 . The insert elements are those shown inFIG. 6 . -
FIG. 10 is a perspective view of a first insert element. Together with the second and third insert elements shown inFIGS. 11 and 12 , it forms a kit of a third embodiment of insert elements. -
FIG. 11 is a perspective view of a second insert element. -
FIG. 12 is a perspective view of a third insert element. -
FIG. 13 is a side view of the plug valve ofFIG. 2 . The insert elements are those shown inFIG. 10 . -
FIG. 14 is a side view of the plug valve ofFIG. 2 . The insert elements are those shown inFIG. 11 . -
FIG. 15 is a side view of the plug valve ofFIG. 2 . The insert elements are those shown inFIG. 12 . - High pressure plug valves are typically used in oil and gas operations to control the flow of fluid throughout piping systems. The valve has a flow passage that may be selectively opened and closed in order to control the flow of fluid through the valve. Plug valves used in high pressure oil and gas operations must be able to withstand fluid pressures up to at least 22,500 pounds per square inch. However, the plug valves are typically used with fluid pressures around 15,000 pounds per square inch.
- Turning now to
FIG. 1 , aplug valve 10 known in the art is shown. Theplug valve 10 comprises abody 12 having aflow passage 14 and an enlargedinternal chamber 16. Theflow passage 14 intersects theinternal chamber 16 and includes aninlet passage 18 and anoutlet passage 20 formed on opposite sides of thechamber 16. The inlet andoutlet passages - The
plug valve 10 further comprises arotatable plug element 22 positioned within theinternal chamber 16. Theplug element 22 is secured within thechamber 16 by aretaining nut 23. Afluid passage 24 extends through theplug element 22. A pair ofjournals plug element 22 and extend out atop surface 30 and abottom surface 32 of thebody 12. Theplug element 22 is rotated by rotating thejournals - To open the
plug valve 10 such that fluid may flow through theflow passage 14, theplug element 22 is rotated so that itsfluid passage 24 is in-line with theflow passage 14. To close theplug valve 10 such that fluid may not flow through theflow passage 14, theplug element 22 is rotated so that itsfluid passage 24 is not in-line with theflow passage 14. - The
plug valve 10 further comprises a plurality ofinsert elements 34 positioned within thechamber 16 and cooperating to at least partially surround theplug element 22. Eachplug valve 10 holds at least twoinsert elements 34. Theinsert elements 34 have aninner surface 36 and anouter surface 38. Theinner surface 36 surrounds theplug element 22 and theouter surface 38 engages with the inner walls of thechamber 16. A fluid opening 40 interconnects the inner andouter surfaces fluid openings 40 are in-line with theflow passage 14 when theelements 34 are positioned within thechamber 16. - The
insert elements 34 each comprise anendless groove 42 surrounding the fluid opening 40. Anannular seal 44 may be positioned within thegroove 42. Theseal 44 blocks fluid from leaking into theinternal chamber 16. The internal walls of thechamber 16 directly across from the position of theseals 44 act as sealingsurfaces 46 for theseals 44 when theinsert elements 34 are positioned within thechamber 16. - The
plug valve 10 shown inFIG. 1 has a taperedinternal chamber 16. Due to this, theouter surface 38 of theinsert elements 34 are tapered so as to be closely received within thechamber 16. Theelements 34 have a concaveinner surface 36 and a spacedouter surface 38 that is congruent with the curved side of a cone. - With reference to
FIG. 2 , an alternative embodiment of aplug valve 50 known in the art is shown. Theplug valve 50 comprises abody 52 having aflow passage 54 and an enlargedinternal chamber 56. Theplug valve 50 is identical to theplug valve 10, except that it has a cylindricalinner chamber 56, rather than a cone-shaped or tapered inner chamber 16 (FIG. 1 ). - A plurality of
insert elements 58 are shown positioned around arotatable plug element 60 within theinternal chamber 56. Theouter surfaces 62 of theinsert elements 58 are not tapered so that they may be closely received within thenon-tapered chamber 56. Theinsert elements 58 have a concaveinner surface 64 and a spacedouter surface 62 that is congruent with the curved side of a cylinder. - The
insert elements 58 each comprises anendless groove 66 surrounding afluid opening 68. Anannular seal 70 may be positioned within thegroove 66 to prevent fluid from leaking into theinternal chamber 56. The internal walls of thechamber 56 directly across from the position of theseals 70 act as sealingsurfaces 72 for theseals 70 when theinsert elements 58 are positioned within thechamber 56. - With reference to
FIGS. 1 and 2 , plugvalves seals chamber seals chamber seals chamber plug valve - The present invention is directed to a system including a plurality of
insert elements seals chamber seals seals chamber plug valve - Turning now to
FIG. 3 , a first embodiment of theinsert elements 100 is shown. Theinsert elements 100 have a spacedouter surface 102 and a concaveinner surface 104. Theinsert elements 100 may be configured to fit within the tapered chamber 16 (FIG. 1 ) or the cylindrical chamber 56 (FIG. 2 ). - A
fluid opening 106 is formed in the center of theelements 100. A firstendless groove 108 is formed in theouter surface 102 surrounding theopening 106. A secondendless groove 110 formed in theouter surface 102 surrounds thefirst groove 108, and a thirdendless groove 112 formed in theouter surface 102 surrounds thesecond groove 110. Each of thegrooves side walls 114 joined by abase 116. - The
grooves fluid opening 106. However, each of thegrooves fluid opening 106. For example, one or all of thegrooves fluid opening 106. - Turning now to
FIGS. 4-6 , a single seal may be positioned within each one of thegrooves insert element 100. Afirst seal 118A is positioned within thefirst groove 108 inFIG. 4 . Asecond seal 118B is positioned within thesecond groove 110 inFIG. 5 , and athird seal 118C is positioned in thethird groove 112 inFIG. 6 . Theseals fluid opening 106 when positioned in thegrooves - With reference to
FIGS. 7-9 , theinsert elements 100 are shown positioned within thechamber 56 of theplug valve 50. The operation described with reference to plugvalve 50 is identical to the operation used with the plug valve 10 (FIG. 1 ). - In operation, the
first seal 118A is positioned within thefirst groove 108 of theinsert elements 100. Theinsert elements 100 are positioned within thechamber 56 so that they surround the plug element 6 o and theirfluid openings 106 are in-line with the flow passage 54 (FIG. 7 ). Theseals 118A tightly engage the sealing surfaces 72 on the walls of theinternal chamber 56. - High pressure fluid is passed through the
plug valve 50. Over time, the sealing surfaces 72 for thefirst seals 118A will start to erode. If thefirst seals 118A start to leak, the flow of fluid into theplug valve 50 is stopped. Theinsert elements 100 are removed from thechamber 56 and thefirst seals 118A are removed from thefirst grooves 108. The second seals 118B are positioned in thesecond grooves 110 and theinsert elements 100 are re-positioned within the chamber 56 (FIG. 8 ) and operations may resume. Because the position of thesecond seals 118B is spaced from the position of thefirst seals 118A, thesecond seals 118B will have new non-eroded sealing surfaces 72. Thus, thesecond seals 118B will offer enhanced resistance from leakage into thechamber 56. - As the sealing surfaces 72 experience erosion, the
second seals 118B may begin to leak. The flow of fluid in theplug valve 50 is again stopped and theinsert elements 100 are removed. The second seals 118B are removed from theinsert elements 100 and thethird seals 118C are positioned within thethird grooves 112. Theinsert elements 100 are then re-positioned within the chamber 56 (FIG. 9 ) and operations may resume. Because the position of thethird seals 118C is spaced from the position of thesecond seals 118B, thethird seals 118C will have new non-eroded sealing surfaces 72. Thus, thethird seals 118C will offer enhanced resistance from leakage into thechamber 56. - The operator may choose any order of positioning a single seal within any single one of the grooves desired. The order of operation described above is non-limiting and is just one method of using the
inserts 100. For example, the operator may start the operation by positioning thethird seal 118C in thethird groove 112, rather than starting with thefirst seal 118A in thefirst groove 108. - The same methods described above may be employed using an
insert element 100 having only two grooves or having more than three grooves. Once the final seal 118 no longer seals properly against its sealingsurface 72, theplug valve 50 will likely need to be replaced. Because eachplug valve different insert elements 100, the above method may be employed at different times for eachelement 100, depending on the wear incurred by the sealingsurface 72 for the seal 118 within each element. - Turning now to
FIGS. 10-12 , a second embodiment of theinsert elements 200 is shown. Thesecond embodiment 200 utilizes a kit comprisingmultiple insert elements insert elements 200 have a spacedouter surface 208 and a concaveinner surface 210. Theinsert elements 200 may be configured to fit within the tapered chamber 16 (FIG. 1 ) or the cylindrical chamber 56 (FIG. 2 ). - Except as described hereafter, the
inserts 200 are identical in size and shape to theinserts 100. Theinserts 200 include afirst insert element 202, asecond insert element 204, and athird insert element 206. Each of theinsert elements endless groove outer surface 208 and surrounding itsfluid opening 218. Each of thegrooves side walls 220 joined by abase 222. - The
first insert element 202 has afirst groove 212. Thesecond insert element 204 has asecond groove 214 that is outwardly spaced from the position of thefirst groove 212 in thefirst insert element 202. Thethird insert element 206 has athird groove 216 that is outwardly spaced from the position of thesecond groove 214. Thefirst groove 212 is positioned nearest thefluid opening 218, and thethird groove 216 is positioned nearest the edge of its respective insert element. - Each of the
grooves insert elements grooves FIG. 3 ), each of thegrooves fluid opening 218. A single seal may be positioned within each one of thegrooves - Turning now to
FIGS. 13-15 , theinsert elements 200 are shown positioned within thechamber 56 of theplug valve 50. The operation described with reference to plugvalve 50 is identical to the operation used with the plug valve 10 (FIG. 1 ).FIGS. 13-15 show afirst seal 224A positioned in thefirst groove 212, asecond seal 224B positioned in thesecond groove 214, and athird seal 224C positioned in thethird groove 216. - In operation, the operator will install the
first insert elements 202 into thechamber 56 so that they surround theplug element 60 and theirfluid openings 218 are in-line with the flow passage 54 (FIG. 13 ). Thefirst seals 224A tightly engage the sealing surfaces 72 on the wall of theinternal chamber 56. - High pressure fluid is passed through the
plug valve 50. Over time, the sealing surfaces 72 for thefirst seals 224A will start to erode. If thefirst seals 224A start to leak, the flow of fluid into theplug valve 50 is stopped. Thefirst insert elements 202 are removed from thechamber 56 and replaced with the second insert elements 204 (FIG. 14 ). - Because the position of the
second seals 224B on thesecond insert elements 204 is spaced from that of thefirst seals 224A on thefirst insert elements 202, thesecond seals 224B will have new non-eroded sealing surfaces 72 in thechamber 56. Thus, thesecond seals 224B will offer enhanced resistance from leakage into thechamber 56. - As the sealing surfaces 72 experience erosion, the
second seals 224B may begin to leak. The flow of fluid in theplug valve 50 is again stopped and theinsert elements 204 are removed and replaced with the third insert elements 206 (FIG. 15 ). Because the position of thethird seals 224C on thethird insert elements 206 is spaced from the first andsecond seals second insert elements third seals 224C will have new non-eroded sealing surfaces 72. Thus, thethird seals 224C will offer enhanced resistance from leakage into thechamber 56. - The operator may choose any order of using the
insert elements 200 desired. The order of operation described above is non-limiting and is just one method of using theinsert elements 200. For example, the operator may start the operation by positioning thethird insert element 206 into thechamber 56, rather than starting by positioning thefirst insert element 202 into thechamber 56. - The same methods described with reference to insert
elements 200 may be employed using only twodifferent insert elements 200 or more than threedifferent insert elements 200. Once the seals 224 on the final insert elements no longer seal properly, theplug valve 50 will likely need to be replaced. Because eachplug valve different insert elements 200, the above method may be employed at different times for eachelement 200, depending on the wear incurred by the sealing surfaces 46 or 72 for the seal 224 within each element. - Various modifications can be made in the design and operation of the present invention without departing from the spirit thereof. Thus, while the principle preferred construction and modes of operation of the invention have been explained in what is now considered to represent its best embodiments, which have been illustrated and described, it should be understood that the invention may be practiced otherwise than as specifically illustrated and described.
Claims (20)
1. A kit for use with a valve, the valve comprising:
a body, comprising:
a flow passage including an inlet passage and an outlet passage; and
an enlarged internal chamber intersecting the flow passage;
a rotatable plug element positioned within the enlarged internal chamber, the plug element having a fluid passage extending therethrough;
a plurality of insert elements positioned within the enlarged internal chamber and cooperating to at least partially surround the plug element, each insert element of the plurality of insert elements having a fluid opening extending therethrough and a seal system comprising:
a first endless groove surrounding the fluid opening;
a second endless groove surrounding the first groove; and
a first seal installed within a selected one of the first or second endless grooves;
the kit comprising:
a plurality of second seals, in which the second seals are sized to be installed within an unselected one of the first or second endless grooves.
2. The kit of claim 1 in which the plurality of second seals are positioned outside of the valve when the valve is in service.
3. The kit of claim 1 in which the first seal is positioned within the first endless groove of each insert element and the plurality of second seals are sized to be positioned with the second endless groove of each of the insert elements.
4. The kit of claim 1 in which the groove system further comprises:
a third endless groove surrounding the second endless groove.
5. The kit of claim 4 in which the kit further comprises:
a plurality of third seals, in which the third seals are sized to be installed within the third endless grooves.
6. The kit of claim 5 in which the plurality of third seals are positioned outside of the valve during operation of the valve.
7. The kit of claim 1 in which the plurality of second seals are installed within the unselected one of the first or second endless grooves.
8. The kit of claim 1 in which each of the first and second endless grooves are characterized by two side walls joined by a base.
9. The kit of claim 1 in which each of the plurality of insert elements has a concave inner surface and a spaced outer surface.
10. The kit of claim 1 in which the first and second endless grooves each follow a circular path around the fluid opening.
11. A system, comprising:
the kit of claim 1 ;
a fluid having a pressure of at least 15,000 pounds per square inch within at least a portion of the flow passage; and
the plurality of second seals positioned outside of the valve.
12. A method of using the kit of claim 1 , the method comprising:
removing at least one of the plurality of insert elements from the valve;
removing the first seal from the groove system;
installing one of the plurality of second seals within the unselected one of the first or second endless grooves; and
positioning the at least one of the plurality of insert elements into the enlarged internal chamber of the valve.
13. The kit of claim 1 in which the first and second endless grooves each follow a different path around the fluid opening.
14. A kit for use with a valve, the valve comprising:
a body, comprising:
a flow passage including an inlet passage and an outlet passage; and
an enlarged internal chamber intersecting the flow passage;
a rotatable plug element positioned within the enlarged internal chamber, the plug element having a fluid passage extending therethrough;
a plurality of first insert elements positioned within the enlarged internal chamber and cooperating to at least partially surround the plug element, each insert element of the plurality of insert elements having a fluid opening extending therethrough and a seal system comprising:
one and only one first endless groove surrounding the fluid opening; and
a first seal installed within the one and only one first endless groove;
the kit comprising:
a plurality of second insert elements configured to at least partially surround the plug element and having a fluid opening extending therethrough and a seal system comprising:
one and only one second endless groove surrounding the fluid opening; and
a second seal installed within the one and only one second endless groove.
15. The kit of claim 14 in which the kit is positioned outside of the valve when the valve is in service.
16. A system, comprising:
the kit of claim 14 ;
a fluid having a pressure of at least 15,000 pounds per square inch within at least a portion of the flow passage; and
the kit positioned outside of the valve.
17. The kit of claim 14 in which the one and only one first endless groove would fully surround or be fully surrounded by the one and only one second endless groove if one of the plurality of first insert elements and one of the plurality of second insert elements were superimposed.
18. The kit of claim 14 in which the kit further comprises:
a plurality of third insert elements configured to at least partially surround the plug element and having a fluid opening extending therethrough and a seal system comprising:
one and only one third endless groove surrounding the fluid opening; and
a third seal installed within the one and only one third endless groove.
19. The kit of claim 14 in which the one and only one first endless groove and the one and only one second endless groove are each characterized by two side walls joined by a base.
20. A method of using the kit of claim 14 , the method comprising:
removing at least one of the plurality of first insert elements from the enlarged internal chamber; and
installing at least one of the plurality of second insert elements into the enlarged internal chamber.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US16/747,275 US20200149528A1 (en) | 2016-08-25 | 2020-01-20 | Modular Gland Arrangements For A Plug Valve |
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Application Number | Priority Date | Filing Date | Title |
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US201662379462P | 2016-08-25 | 2016-08-25 | |
US15/685,178 US10539132B2 (en) | 2016-08-25 | 2017-08-24 | Modular gland arrangements for a plug valve |
US16/747,275 US20200149528A1 (en) | 2016-08-25 | 2020-01-20 | Modular Gland Arrangements For A Plug Valve |
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US15/685,178 Continuation US10539132B2 (en) | 2016-08-25 | 2017-08-24 | Modular gland arrangements for a plug valve |
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US20200149528A1 true US20200149528A1 (en) | 2020-05-14 |
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US15/685,167 Active 2037-12-04 US10519950B2 (en) | 2016-08-25 | 2017-08-24 | Modular gland arrangements for a fluid end assembly |
US15/685,178 Active US10539132B2 (en) | 2016-08-25 | 2017-08-24 | Modular gland arrangements for a plug valve |
US16/722,139 Active US10914171B2 (en) | 2016-08-25 | 2019-12-20 | Modular gland arrangements for a fluid end assembly |
US16/747,275 Abandoned US20200149528A1 (en) | 2016-08-25 | 2020-01-20 | Modular Gland Arrangements For A Plug Valve |
US17/166,707 Active US11441424B2 (en) | 2016-08-25 | 2021-02-03 | Modular gland arrangements for a fluid end assembly |
US17/941,823 Active US12000285B2 (en) | 2016-08-25 | 2022-09-09 | Modular gland arrangements for a fluid end assembly |
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US15/685,167 Active 2037-12-04 US10519950B2 (en) | 2016-08-25 | 2017-08-24 | Modular gland arrangements for a fluid end assembly |
US15/685,178 Active US10539132B2 (en) | 2016-08-25 | 2017-08-24 | Modular gland arrangements for a plug valve |
US16/722,139 Active US10914171B2 (en) | 2016-08-25 | 2019-12-20 | Modular gland arrangements for a fluid end assembly |
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US17/166,707 Active US11441424B2 (en) | 2016-08-25 | 2021-02-03 | Modular gland arrangements for a fluid end assembly |
US17/941,823 Active US12000285B2 (en) | 2016-08-25 | 2022-09-09 | Modular gland arrangements for a fluid end assembly |
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-
2017
- 2017-08-24 US US15/685,167 patent/US10519950B2/en active Active
- 2017-08-24 US US15/685,178 patent/US10539132B2/en active Active
-
2019
- 2019-12-20 US US16/722,139 patent/US10914171B2/en active Active
-
2020
- 2020-01-20 US US16/747,275 patent/US20200149528A1/en not_active Abandoned
-
2021
- 2021-02-03 US US17/166,707 patent/US11441424B2/en active Active
-
2022
- 2022-09-09 US US17/941,823 patent/US12000285B2/en active Active
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US11441424B2 (en) | 2022-09-13 |
US10914171B2 (en) | 2021-02-09 |
US20230003126A1 (en) | 2023-01-05 |
US20210156253A1 (en) | 2021-05-27 |
US20200124045A1 (en) | 2020-04-23 |
US20180058592A1 (en) | 2018-03-01 |
US10539132B2 (en) | 2020-01-21 |
US12000285B2 (en) | 2024-06-04 |
US10519950B2 (en) | 2019-12-31 |
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