CN111120681A - Upper assembling type ball valve seat assembly at ultralow temperature - Google Patents

Upper assembling type ball valve seat assembly at ultralow temperature Download PDF

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Publication number
CN111120681A
CN111120681A CN202010097866.4A CN202010097866A CN111120681A CN 111120681 A CN111120681 A CN 111120681A CN 202010097866 A CN202010097866 A CN 202010097866A CN 111120681 A CN111120681 A CN 111120681A
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CN
China
Prior art keywords
valve seat
ring
energy storage
ball
wall
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.)
Pending
Application number
CN202010097866.4A
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Chinese (zh)
Inventor
陆嘉君
王君
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhangjiagang Furui Valve Co ltd
Original Assignee
Zhangjiagang Furui Valve Co ltd
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 Zhangjiagang Furui Valve Co ltd filed Critical Zhangjiagang Furui Valve Co ltd
Priority to CN202010097866.4A priority Critical patent/CN111120681A/en
Publication of CN111120681A publication Critical patent/CN111120681A/en
Pending legal-status Critical Current

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    • 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
    • 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
    • F16K5/08—Details
    • 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
    • F16K5/08—Details
    • F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
    • F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
    • F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug

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

Abstract

The invention discloses an ultralow-temperature upper-mounted ball valve seat assembly, which mainly solves the problem that a metal piece and a plastic piece are easy to deform under an ultralow-temperature environment, so that the sealing is not tight and the leakage is caused. The method comprises the following steps: a valve body; the valve seat is arranged on the left side and the right side inside the valve body and provided with steps, and the steps are full circles; the elastic check ring for the shaft is an unclosed annular ring-shaped element, and the elastic check ring for the shaft is clamped on the valve seat; the energy storage ring is sleeved on the outer wall of the valve seat and located between the elastic check ring for the shaft and the step of the valve seat, the energy storage ring is provided with an elastic sheet, the elastic sheet is arranged inside the energy storage ring, the elastic sheet is used for enabling the inner ring of the energy storage ring to abut against the outer wall of the valve seat, and enabling the outer ring of the energy storage ring to abut against the inner wall of the valve body. The invention has the advantages that the ball valve can be tightly sealed and does not leak under the ultralow temperature state.

Description

Upper assembling type ball valve seat assembly at ultralow temperature
Technical Field
The invention relates to the field of ball valve application, in particular to an ultralow-temperature top-mounted ball valve seat assembly.
Background
The ball valve is mainly used for fluid or gas pipeline transmission, blocks fluid or gas so as to be convenient for maintenance, overhaul or construction, is widely applied to industries such as petroleum refining, long-distance transmission pipelines, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration and steel, and the like, and plays a significant role in national economy. Is mainly used for cutting off, distributing and changing the flow direction of the medium in the pipeline. Along with the increase to LNG energy demand, LNG receiving station, LNG boats and ships, LNG liquefaction mill etc. are constantly built, and the application of ultra-low temperature ball valve is also more and more extensive.
Because under the ultra-low temperature condition, metalworks such as valve body, disk seat, spheroid and plastic seal spare can low temperature shrink deformation, and metal and plastic part shrink proportion are different, very easily lead to the valve to seal not tight and produce ultra-low temperature medium and leak, bring uncontrollable danger to environment and personnel's safety on every side.
Disclosure of Invention
The invention aims to provide an ultralow-temperature upper-mounted ball valve seat assembly to solve the problem that a metal piece and a plastic piece are easy to deform under an ultralow-temperature environment, so that the sealing is not tight and leakage can occur.
In order to achieve the purpose, the embodiment of the invention adopts the following scheme:
an ultra-low temperature top-loading ball valve seat assembly comprising:
a valve body;
a valve seat arranged at the left and right sides of the inside of the valve body and provided with
The step is a whole circle, surrounds the outer wall and is attached to the surface of the inner wall of the valve body;
the elastic check ring for the shaft is an unclosed annular ring-shaped element, and the elastic check ring for the shaft is clamped on the valve seat;
the energy storage ring is sleeved on the outer wall of the valve seat and positioned between the elastic retainer ring for the shaft and the step of the valve seat, and the energy storage ring is provided with
The elastic sheet is arranged in the energy storage ring, and is used for abutting the inner ring of the energy storage ring against the outer wall of the valve seat and abutting the outer ring of the energy storage ring against the inner wall of the valve body.
The elastic sheet elastically extrudes the interior of the energy storage ring, so that the energy storage ring is tightly attached up and down, and the elastic sheet is tightly attached to the force application of the energy storage ring to realize sealing even if the energy storage ring is deformed in an ultralow temperature environment.
Preferably, one side of the energy storage ring is open, a circle of bead extending towards the inside of the energy storage ring is further arranged at the opening position of the energy storage ring and used for placing the elastic sheet from the opening position, protruding portions are arranged on the outer ring and the inner ring of the energy storage ring and located at the opening position of the energy storage ring, and the protruding portions are semicircular and attached to the inner wall of the valve body and the outer wall of the valve seat.
Preferably, the elastic sheet is U-shaped and is an unclosed ring-shaped object, and one side of the elastic sheet abuts against the bead.
Preferably, the elastic sheet is O-shaped and is a closed ring-shaped object, and the outer surface of the elastic sheet abuts against the bead.
Preferably, the energy storage ring is made of polytetrafluoroethylene material, and the elastic sheet is a metal energy storage spring.
Preferably, the bottom of disk seat is equipped with the clamping ring, the bottom of disk seat with be equipped with the ball lining between the clamping ring, be equipped with the screw on the bottom of disk seat, the screw runs through the bottom and the clamping ring of disk seat for hug closely the bottom of disk seat and fix the ball lining with the clamping ring.
Preferably, a wave spring is arranged between the inner wall of the valve body and the valve seat, a ball body is arranged at the bottom of the ball lining, and the wave spring is used for generating elastic force to press the ball lining and enable the ball lining to be tightly attached to the ball body.
Preferably, a graphite rope is arranged in the valve body and attached between the inner wall of the valve body and the outer wall of the valve seat.
Preferably, the circlip for the shaft is made of stainless steel.
A method of using an ultra-low temperature top-loading ball valve seat assembly, comprising:
attaching the ball lining to the bottom of the valve seat, attaching the pressing ring to the bottom of the valve seat and clamping the ball lining, penetrating a screw through the valve seat and the pressing ring, and screwing down to fix the ball lining;
the elastic sheet is plugged into the energy storage ring, then the energy storage ring plugged with the elastic sheet is sleeved on the outer wall of the valve seat, and then the shaft is clamped on the valve seat through the elastic check ring and tightly attached to the energy storage ring;
the ball body is clamped by the ball lining at the bottom of the valve seat by placing the wavy springs at the left side and the right side in the valve body, placing the valve seat provided with the ball lining and the energy storage ring into the valve body, extruding the valve seat to form a larger distance between the valve seat and the valve seat, finally placing the ball body into the valve body, and loosening the extrusion force on the valve seat.
The invention has the beneficial effects that:
the invention relates to an ultra-low temperature top-mounted ball valve seat assembly, which is characterized in that an elastic sheet is arranged in an energy storage ring, and the elastic sheet applies force to the energy storage ring even if the energy storage ring is deformed in an ultra-low temperature environment, so that the energy storage ring can be kept in a state of being attached up and down; the ball valve has the beneficial effects that the ball valve can be tightly sealed and does not leak under an ultralow temperature state.
Drawings
FIG. 1 is a cross-sectional view of the ball valve of the present invention.
Fig. 2 is a schematic view of a circlip for a shaft of the present invention.
Fig. 3 is a schematic view of the energy storage ring of the present invention.
1. Valve body 2, elastic retainer ring 3 for shaft and energy storage ring
4. Graphite rope 5, wave spring 6, disk seat
7. Screw 8, ball lining 9 and press ring
11. Inner wall 31, spring plate 32 and boss
33. Bead 61, outer wall 62, step
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clear and fully described, embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of some embodiments of the invention and are not limiting of the invention, and that all other embodiments obtained by those of ordinary skill in the art without the exercise of inventive faculty are within the scope of the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "a," "an," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
For the purposes of simplicity and explanation, the principles of the embodiments are described by referring mainly to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. But it is obvious. To one of ordinary skill in the art, the embodiments may be practiced without limitation to these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.
As shown in fig. 1 to 3, an ultra-low temperature top-loading ball valve seat assembly, comprising: an ultra-low temperature top-loading ball valve seat assembly comprising: a valve body 1; the valve seat 6 is arranged on the left side and the right side inside the valve body 1, the valve seat 6 is provided with a step 62, the step 62 is a whole circle, and the step 62 surrounds the outer wall 61 and is attached to the surface of the inner wall 11 of the valve body 1; the elastic retainer ring 2 for the shaft is an unclosed annular ring-shaped element, and the elastic retainer ring 2 for the shaft is clamped on the valve seat 6; the energy storage ring 3 is sleeved on the outer wall 61 of the valve seat 6 and located between the elastic retainer ring 2 for the shaft and the step 62 of the valve seat 6, the energy storage ring 3 is provided with an elastic sheet 31, the elastic sheet 31 is arranged inside the energy storage ring 3, the elastic sheet 31 is used for enabling the inner ring of the energy storage ring 3 to abut against the outer wall 61 of the valve seat 6, and the outer ring of the energy storage ring 3 to abut against the inner wall 11 of the valve body 1. The elastic sheet 31 elastically extrudes the interior of the energy storage ring 3 to enable the energy storage ring 3 to be tightly attached up and down, and even if the energy storage ring 3 can deform under the ultralow-temperature environment, the elastic sheet 31 applies force to the energy storage ring 3 to be tightly attached to realize sealing.
Specifically, one side of the energy storage ring 3 is open, a circle of bead 33 extending towards the inside of the energy storage ring 3 is further arranged at the opening position of the energy storage ring 3 and used for placing the elastic sheet 31 from the opening position, a protruding portion 32 is arranged on the outer ring and the inner ring of the energy storage ring 3, the protruding portion 32 is located at the opening position of the energy storage ring 3, and the protruding portion 32 is semicircular and attached to the inner wall 11 of the valve body 1 and the outer wall 61 of the valve seat 6.
Specifically, the elastic sheet 31 is U-shaped and is an unclosed ring, and one side of the elastic sheet 31 abuts against the bead 33.
Specifically, the elastic sheet 31 is "O" shaped, and is a closed loop, and the outer surface of the elastic sheet 31 abuts against the bead 33.
Specifically, the energy storage ring 3 is made of polytetrafluoroethylene material, and the elastic sheet 31 is a metal energy storage spring.
Specifically, the bottom of the valve seat 6 is provided with a pressing ring 9, a ball lining 8 is arranged between the bottom of the valve seat 6 and the pressing ring 9, the bottom of the valve seat 6 is provided with a screw 7, and the screw 7 penetrates through the bottom of the valve seat 6 and the pressing ring 9 and is used for enabling the pressing ring 9 to be tightly attached to the bottom of the valve seat 6 and fixing the ball lining 8.
Specifically, a wave spring 5 is arranged between the inner wall 11 of the valve body 1 and the valve seat 6, a ball body is arranged at the bottom of the ball lining 8, and the wave spring 5 is used for generating elastic force to press the ball lining 8 and enable the ball lining 8 to be tightly attached to the ball body.
Specifically, the valve body 1 is provided with a graphite rope 4, and the graphite rope 4 is attached between the inner wall 11 of the valve body 1 and the outer wall 61 of the valve seat 6.
Specifically, the circlip 2 for a shaft is made of stainless steel.
A method of using an ultra-low temperature top-loading ball valve seat assembly, comprising:
attaching the ball lining 8 to the bottom of the valve seat 6, attaching the pressing ring 9 to the bottom of the valve seat 6 and clamping the ball lining 8, penetrating the screw 7 through the valve seat 6 and the pressing ring 9, and screwing down to fix the ball lining 8;
the elastic sheet 31 is plugged into the energy storage ring 3, then the energy storage ring 3 plugged with the elastic sheet 31 is sleeved on the outer wall 61 of the valve seat 6, and then the shaft elastic check ring 2 is clamped on the valve seat 6 and tightly attached to the energy storage ring 3;
the wave springs are placed on the left side and the right side in the valve body 1, the valve seat 6 provided with the ball lining 8 and the energy storage ring 3 is placed into the valve body 1 to extrude the valve seat 6, so that a larger distance is reserved between the valve seat 6 and the valve seat 6, finally, a ball body is placed, the extrusion force on the valve seat 6 is released, and the ball lining 8 at the bottom of the valve seat 6 clamps the ball body.
The invention relates to an ultra-low temperature top-mounted ball valve seat assembly.A spring plate 31 is arranged in an energy storage ring 3, and under the ultra-low temperature environment, even if the energy storage ring 3 deforms, the spring plate 31 applies force to the energy storage ring 3, so that the energy storage ring 3 can keep a state of being attached up and down; the ball valve has the beneficial effects that the ball valve can be tightly sealed and does not leak under an ultralow temperature state;
the ball liner 8 in the invention is designed into a detachable structure, so that leakage is convenient to replace. The original structure is closed or extruded, and if leakage occurs, the whole structure can be replaced; and the sealing position of the ball liner 8 and the valve seat 6 is provided with a step 62, so that the sealing specific pressure is increased, and the sealing is better under the working condition.
Although the illustrative embodiments of the present invention have been described above to enable those skilled in the art to understand the present invention, the present invention is not limited to the scope of the embodiments, and it is apparent to those skilled in the art that all the inventive concepts using the present invention are protected as long as they can be changed within the spirit and scope of the present invention as defined and defined by the appended claims.

Claims (10)

1. An ultra-low temperature top-loading ball valve seat assembly comprising:
a valve body;
a valve seat arranged at the left and right sides of the inside of the valve body and provided with
The step is a whole circle, surrounds the outer wall and is attached to the surface of the inner wall of the valve body;
the elastic check ring for the shaft is an unclosed annular ring-shaped element, and the elastic check ring for the shaft is clamped on the valve seat;
the energy storage ring is sleeved on the outer wall of the valve seat and positioned between the elastic retainer ring for the shaft and the step of the valve seat, and the energy storage ring is provided with
The elastic sheet is arranged in the energy storage ring, and is used for abutting the inner ring of the energy storage ring against the outer wall of the valve seat and abutting the outer ring of the energy storage ring against the inner wall of the valve body.
2. The ultra-low temperature top-mounted ball valve seat assembly according to claim 1, wherein the energy storage ring is open at one side, a round of bead extending towards the inside of the energy storage ring is further arranged at the opening position of the energy storage ring for placing the elastic sheet from the opening position, a protruding portion is arranged on the outer ring and the inner ring of the energy storage ring, the protruding portion is located at the opening position of the energy storage ring, and the protruding portion is semicircular and is attached to the inner wall of the valve body and the outer wall of the valve seat.
3. An ultra-low temperature top loading ball valve seat assembly as claimed in claim 2 wherein said leaf spring is "U" shaped as a non-closed loop with one side of the leaf spring abutting against said bead.
4. An ultra-low temperature top loading ball valve seat assembly as claimed in claim 2 wherein said spring plate is "O" shaped as a closed loop with an outer surface abutting said bead.
5. An ultra-low temperature top-loading ball valve seat assembly as claimed in claim 1 wherein said energy storing ring is made of teflon and said spring plate is a metal energy storing spring.
6. The ultra-low temperature top-loading ball valve seat assembly according to claim 1, wherein a compression ring is arranged at the bottom of the valve seat, a ball lining is arranged between the bottom of the valve seat and the compression ring, a screw is arranged at the bottom of the valve seat and penetrates through the bottom of the valve seat and the compression ring, and the compression ring is tightly attached to the bottom of the valve seat and used for fixing the ball lining.
7. An ultra-low temperature top-loading ball valve seat assembly as claimed in claim 6, wherein a wave spring is provided between the inner wall of the valve body and the valve seat, and a ball is provided at the bottom of the ball liner, the wave spring being used to generate elastic force to press the ball liner and make the ball liner tightly contact the ball.
8. An ultra-low temperature top loading ball valve seat assembly as claimed in claim 1 wherein graphite cords are disposed in said valve body, said cords engaging between said inner wall of said valve body and said outer wall of said valve seat.
9. An ultra-low temperature, top-loading ball valve seat assembly as claimed in claim 1 wherein said circlip for the shaft is made of stainless steel.
10. A method of using an ultra-low temperature top-loading ball valve seat assembly, comprising:
attaching the ball lining to the bottom of the valve seat, attaching the pressing ring to the bottom of the valve seat and clamping the ball lining, penetrating a screw through the valve seat and the pressing ring, and screwing down to fix the ball lining;
the elastic sheet is plugged into the energy storage ring, then the energy storage ring plugged with the elastic sheet is sleeved on the outer wall of the valve seat, and then the shaft is clamped on the valve seat through the elastic check ring and tightly attached to the energy storage ring;
the ball body is clamped by the ball lining at the bottom of the valve seat by placing the wavy springs at the left side and the right side in the valve body, placing the valve seat provided with the ball lining and the energy storage ring into the valve body, extruding the valve seat to form a larger distance between the valve seat and the valve seat, finally placing the ball body into the valve body, and loosening the extrusion force on the valve seat.
CN202010097866.4A 2020-02-18 2020-02-18 Upper assembling type ball valve seat assembly at ultralow temperature Pending CN111120681A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010097866.4A CN111120681A (en) 2020-02-18 2020-02-18 Upper assembling type ball valve seat assembly at ultralow temperature

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010097866.4A CN111120681A (en) 2020-02-18 2020-02-18 Upper assembling type ball valve seat assembly at ultralow temperature

Publications (1)

Publication Number Publication Date
CN111120681A true CN111120681A (en) 2020-05-08

Family

ID=70492003

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010097866.4A Pending CN111120681A (en) 2020-02-18 2020-02-18 Upper assembling type ball valve seat assembly at ultralow temperature

Country Status (1)

Country Link
CN (1) CN111120681A (en)

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