CN112923094A - Pilot middle cavity constant-pressure type ultrahigh-pressure ball valve for oil and gas exploitation equipment - Google Patents

Pilot middle cavity constant-pressure type ultrahigh-pressure ball valve for oil and gas exploitation equipment Download PDF

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Publication number
CN112923094A
CN112923094A CN202110286360.2A CN202110286360A CN112923094A CN 112923094 A CN112923094 A CN 112923094A CN 202110286360 A CN202110286360 A CN 202110286360A CN 112923094 A CN112923094 A CN 112923094A
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CN
China
Prior art keywords
valve
pressure
sealing
ball
pressure relief
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Pending
Application number
CN202110286360.2A
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Chinese (zh)
Inventor
邓金先
李树林
陈林
黄辉
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.)
Suzhou Douson Valve Co ltd
Original Assignee
Suzhou Douson 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
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Application filed by Suzhou Douson Valve Co ltd filed Critical Suzhou Douson Valve Co ltd
Priority to CN202110286360.2A priority Critical patent/CN112923094A/en
Publication of CN112923094A publication Critical patent/CN112923094A/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
    • F16K5/06—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
    • F16K5/0605—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 with particular plug arrangements, e.g. particular shape or built-in means
    • 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
    • F16K5/0663—Packings
    • 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)
  • Safety Valves (AREA)

Abstract

The invention relates to a pilot middle cavity constant pressure type ultrahigh pressure ball valve for oil and gas exploitation equipment, which comprises: the valve comprises a main valve body, wherein an auxiliary valve body is arranged on one side of the main valve body, an installation cavity is arranged in the main valve body, a valve ball is rotatably connected in the installation cavity, and a flow guide channel is formed in the middle of the valve ball; the first sealing valve seat and the second sealing valve seat are movably connected to the main valve body and are oppositely arranged on two sides of the valve ball; and the pressure relief structure is arranged on the valve ball and used for guiding the high-pressure medium to the mounting cavity after the valve ball rotates and opens a preset angle so as to form a pressure balance state. Because of having set up pressure relief structure, when rotating the valve ball to pressure relief structure and water conservancy diversion passageway corresponding, high-pressure medium can be linked together with the installation cavity in the pressure relief structure at first getting into, and the pressure between installation cavity and the auxiliary valve body forms the balance this moment to realize opening fast and quick pressure release, reduced and opened the moment of torsion, shortened the pressure release stroke, reduced the damage to sealed face of opening the in-process, improved the life of ball valve.

Description

Pilot middle cavity constant-pressure type ultrahigh-pressure ball valve for oil and gas exploitation equipment
Technical Field
The invention relates to the technical field of valves, in particular to a pilot middle cavity constant-pressure ultrahigh-pressure ball valve for oil and gas exploitation equipment.
Background
The valve is a control part in a pipeline fluid conveying system, is used for changing the section of a passage and the flowing direction of a medium, and has the functions of diversion, cut-off, throttling, non-return, diversion, overflow pressure relief and the like. The ball valve is one of the most widely used valves, and the opening and closing member is a valve ball which is driven by the valve rod and rotates around the axis of the valve rod to realize opening and closing actions. In the high-pressure equipment field, the valve ball can receive the high pressure that the fluid produced, current ball valve bearing capacity is generally all below 70MPa, when pressure reaches more than 100MPa, in order to guarantee that the valve ball possesses sufficient pressure resistance, need corresponding increase valve ball's design proportion, can cause the pressure release section to open the stroke overlength from this, because the structural feature of ball valve, after the stroke extension of opening of valve ball, the disk seat is when last pressure release is opened, the valve ball of the local contact of disk seat sealing face can further cause the moment of torsion to increase suddenly, cause and open difficulty or sealing face local damage.
Disclosure of Invention
In order to solve the technical problems, the invention provides a pilot middle cavity constant-pressure ultrahigh-pressure ball valve for oil and gas exploitation equipment, which has the advantages of improving the opening efficiency and reducing the damage of a sealing surface.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the utility model provides an oil gas exploitation equipment is with guide's lumen constant pressure formula superhigh pressure ball valve, includes:
the valve comprises a main valve body, wherein an auxiliary valve body is arranged on one side of the main valve body, an installation cavity is arranged in the main valve body, a valve ball is rotatably connected in the installation cavity, a flow guide channel is formed in the middle of the valve ball, and a valve rod fixed on the valve ball is rotatably connected to the main valve body;
the first sealing valve seat and the second sealing valve seat are movably connected to the main valve body and oppositely arranged and are in sealing fit with the two sides of the valve ball, sealing surfaces which are in sealing contact with the valve ball are arranged on the first sealing valve seat and the second sealing valve seat, a first sealing elastic part is arranged between the first sealing valve seat and the main valve body, and a second sealing elastic part is arranged between the second sealing valve seat and the auxiliary valve body; and the number of the first and second groups,
and the pressure relief structure is arranged on the valve ball and used for guiding high-pressure medium to the mounting cavity after the valve ball rotates and opens a preset angle so as to form a pressure balance state.
According to the technical scheme, in a sealing state, high-pressure medium enters the auxiliary valve body from the pipeline, and high-strength pressure is generated on the second sealing valve seat at the moment, so that the first sealing valve seat and the second sealing valve seat are tightly attached and sealed with the valve ball, and high-pressure sealing is realized; when pressure release is needed, because the pressure release structure is arranged, when the operating valve rod rotates the valve ball to the pressure release structure and corresponds to the flow guide channel, a high-pressure medium can firstly enter the pressure release structure and is communicated with the installation cavity, the pressure between the installation cavity and the auxiliary valve body is balanced at the moment, and simultaneously, the first sealing valve seat and the second sealing valve seat can also be slightly moved, so that quick pressure release is realized, the sealing pressure of the first sealing valve seat and the second sealing valve seat on the valve ball is reduced, the opening torque is reduced, the pressure release stroke is shortened, the damage to the sealing surface in the opening process is reduced, the service life of the ball valve is prolonged, and the position of the pressure release structure is reasonably arranged, so that the design pressure of the ball valve can be increased to more than 140MPa, and the opening process of the pressure release stroke of more than 70% at.
As a preferable scheme of the present invention, the pressure relief structure includes a plurality of pressure relief holes disposed at one side of the flow guide channel, and the pressure relief holes are communicated with the flow guide channel.
According to the technical scheme, the high-pressure medium is guided into the flow guide channel through the pressure relief hole, and then the high pressure is released into the installation cavity, so that pressure balance is formed.
As a preferable aspect of the present invention, the pressure relief structure includes: the pressure relief device comprises a flow guide through hole communicated with the installation cavity and a plurality of pressure relief holes arranged on one side of the flow guide channel, wherein the pressure relief holes are communicated with the flow guide through hole.
According to the technical scheme, the high-pressure medium is guided into the flow guide hole through the pressure relief hole, and then the high pressure is discharged into the installation cavity through the flow guide channel, so that pressure balance is formed.
As a preferable scheme of the present invention, the pressure relief hole is simultaneously communicated with the flow guide through hole and the flow guide passage.
According to the technical scheme, the pressure relief holes and the flow guide through holes are matched with each other, and the high-pressure medium is simultaneously guided into the installation cavity and the guide channel, so that the pressure balance and the pressure relief process are faster.
As a preferable scheme of the invention, two groups of pressure relief holes are arranged in a centrosymmetric manner.
As a preferable scheme of the present invention, two sets of the pressure relief holes and the flow guide through holes are arranged in a centrosymmetric manner.
As a preferable scheme of the invention, a plurality of pressure relief holes are arranged around the flow guide channel in an arc shape.
According to the technical scheme, the pressure relief holes can synchronously perform pressure relief action.
As a preferable scheme of the present invention, the first elastic sealing element and the second elastic sealing element both adopt springs, a first caulking groove is formed on the first sealing valve seat, the first elastic sealing element is embedded in the first caulking groove, a second caulking groove is formed on the second sealing valve seat, and the second sealing element is embedded in the second caulking groove.
The technical scheme is realized, and the first elastic sealing element and the second elastic sealing element are convenient to install.
As a preferable scheme of the present invention, two ends of the valve ball are provided with connecting convex columns, a pivot shaft is arranged in the main valve body, a bearing is embedded in the pivot shaft, and the bearing is sleeved on the connecting convex columns.
By adopting the technical scheme, the valve ball can be conveniently installed and rotated.
As a preferred scheme of the present invention, a sealing gland is arranged on the main valve body, and a sealing packing is arranged between the sealing gland and the valve rod.
Realize above-mentioned technical scheme, the installation of the valve rod of being convenient for, firm and sealed.
In conclusion, the invention has the following beneficial effects:
according to the pilot middle cavity constant-pressure type ultrahigh-pressure ball valve for the oil and gas exploitation equipment, in a sealed state, a high-pressure medium enters the auxiliary valve body from a pipeline, and high-strength pressure is generated on the second sealing valve seat at the moment, so that the first sealing valve seat and the second sealing valve seat are tightly attached and sealed with the valve ball, and high-pressure sealing is realized; when pressure release is needed, because the pressure release structure is arranged, when the operating valve rod rotates the valve ball to the pressure release structure and corresponds to the flow guide channel, a high-pressure medium can firstly enter the pressure release structure and is communicated with the installation cavity, the pressure between the installation cavity and the auxiliary valve body is balanced at the moment, and simultaneously, the first sealing valve seat and the second sealing valve seat can also be slightly moved, so that quick pressure release is realized, the sealing pressure of the first sealing valve seat and the second sealing valve seat on the valve ball is reduced, the opening torque is reduced, the pressure release stroke is shortened, the damage to the sealing surface in the opening process is reduced, the service life of the ball valve is prolonged, and the position of the pressure release structure is reasonably arranged, so that the design pressure of the ball valve can be increased to more than 140MPa, and the opening process of the pressure release stroke of more than 70% at.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a valve ball according to a first embodiment of the present invention.
FIG. 3 is a perspective view of a valve ball according to one embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a valve ball according to a second embodiment of the present invention.
FIG. 5 is a perspective view of a valve ball according to a second embodiment of the present invention.
FIG. 6 is a perspective view of a valve ball according to a third embodiment of the present invention.
The corresponding part names indicated by the numbers and letters in the drawings:
1. a main valve body; 11. a sub-valve body; 12. installing a chamber; 13. a valve ball; 131. a flow guide channel; 132. connecting the convex columns; 14. a valve stem; 15. a pivotal shaft; 16. a bearing; 17. a sealing gland; 18. sealing and filling; 2. a first sealing valve seat; 21. a first sealing elastic member; 3. a second sealing valve seat; 31. a second sealing elastic member; 4. a pressure relief structure; 41. a pressure relief vent; 42. and a flow guide through hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
A pilot middle cavity constant pressure type ultrahigh pressure ball valve for oil and gas exploitation equipment is shown in figures 1 to 3 and comprises: the main valve comprises a main valve body 1, wherein an auxiliary valve body 11 is arranged on one side of the main valve body 1, an installation chamber 12 is arranged in the main valve body 1, a valve ball 13 is rotatably connected in the installation chamber 12, a flow guide channel 131 is formed in the middle of the valve ball 13, and a valve rod 14 fixed on the valve ball 13 is rotatably connected to the main valve body 1; the first sealing valve seat 2 and the second sealing valve seat 3 are movably connected to the main valve body 1 and oppositely arranged on two sides of the valve ball 13, the first sealing valve seat 2 and the second sealing valve seat 3 are in sealing fit, sealing surfaces in sealing contact with the valve ball 13 are arranged on the first sealing valve seat 2 and the second sealing valve seat 3, a first sealing elastic part 21 is arranged between the first sealing valve seat 2 and the main valve body 1, and a second sealing elastic part 31 is arranged between the second sealing valve seat 3 and the auxiliary valve body 11; and the pressure relief structure 4 is arranged on the valve ball 13, and the pressure relief structure 4 is used for guiding the high-pressure medium to the mounting cavity 12 to form a pressure balance state after the valve ball 13 rotates and opens for a preset angle.
Specifically, the pressure relief structure 4 includes a plurality of pressure relief holes 41 arranged on one side of the flow guide channel 131, the pressure relief holes 41 are communicated with the flow guide channel 131, two sets of pressure relief holes 41 are arranged in a centrosymmetric manner, in this embodiment, three pressure relief holes 41 are arranged in each set, and each pressure relief hole 41 is arranged in an arc shape around the flow guide channel 131, so that each pressure relief hole 41 can perform pressure relief action synchronously; high-pressure medium is led into the flow guide channel 131 through the pressure relief hole 41, and then high pressure is discharged into the installation cavity 12, so that pressure balance is formed, in the embodiment, the deviation between the setting position of the pressure relief hole 41 and a sealing site is 5-10 degrees, so that pressure relief can be performed by rotating for 5-10 degrees on the basis of meeting sealing requirements, and compared with a common ball valve, the pressure relief valve can rotate to an orifice site of the flow guide channel 131 for pressure relief estimation by rotating for 20-50 degrees, and the pressure relief stroke is greatly shortened.
In this embodiment, first elastic sealing element and second elastic sealing element all adopt the spring, have seted up first caulking groove on the first sealed disk seat 2, and first elastic sealing element inlays and locates first caulking groove, has seted up the second caulking groove on the second sealed disk seat 3, and the second sealing element inlays and locates the second caulking groove to in the installation first elastic sealing element and second elastic sealing element.
And both ends of the valve ball 13 are provided with connecting convex columns 132, the main valve body 1 is internally provided with a pivot shaft 15, a bearing 16 is embedded in the pivot shaft 15, the bearing 16 is sleeved on the connecting convex columns 132 so as to facilitate the installation and rotation of the valve ball 13, meanwhile, the main valve body 1 is provided with a sealing gland 17, and a sealing filler 18 is arranged between the sealing gland 17 and the valve rod 14 so as to facilitate the installation, the stability and the sealing of the valve rod 14.
In a sealing state, high-pressure medium enters the auxiliary valve body 11 from a pipeline, and high-strength pressure is generated on the second sealing valve seat 3 at the moment, so that the first sealing valve seat 2 and the second sealing valve seat 3 are tightly attached and sealed with the valve ball 13, and high-pressure sealing is realized; when pressure relief is needed, due to the arrangement of the pressure relief structure 4, when the operating valve rod 14 rotates the valve ball 13 until the pressure relief structure 4 corresponds to the flow guide channel 131, high-pressure medium firstly enters the pressure relief structure 4 to be communicated with the installation chamber 12, at this time, pressure between the installation chamber 12 and the auxiliary valve body 11 is balanced, and simultaneously, micro-motion occurs on two sides of the first sealing valve seat 2 and the second sealing valve seat 3, thereby realizing rapid pressure relief, simultaneously reducing the sealing pressure of the first sealing valve seat 2 and the second sealing valve seat 3 to the valve ball 13, thereby reducing the opening torque, shortening the pressure relief stroke, reducing the damage to the sealing surface in the opening process, prolonging the service life of the ball valve, and through the position of reasonable setting pressure release structure 4 for the design pressure of ball valve can improve to more than 140MPa, and the more than 70% pressure release stroke opening process of back end is lighter.
Example two
The present embodiment is different from other embodiments in that, in the present embodiment: as shown in fig. 4 and 5, the pressure relief structure 4 includes: the valve ball comprises a flow guide through hole 42 communicated with the installation cavity 12 and a plurality of pressure relief holes 41 arranged on one side of a flow guide channel 131, wherein the pressure relief holes 41 are communicated with the flow guide through hole 42, in the embodiment, two groups of pressure relief holes 41 and two groups of flow guide through holes 42 are arranged in a centrosymmetric manner, three groups of pressure relief holes 41 are arranged in each group, and the flow guide channel 131 penetrates through the upper end and the lower end of the valve ball 13; high-pressure medium is introduced into the guide through hole 42 through the pressure relief hole 41, and high pressure is discharged into the installation chamber 12 through the guide passage 131, thereby forming pressure balance.
EXAMPLE III
The present embodiment is different from other embodiments in that, in the present embodiment: as shown in fig. 6, the pressure relief structure 4 includes: the pressure relief device comprises a flow guide through hole 42 communicated with the mounting cavity 12 and a plurality of pressure relief holes 41 arranged on one side of a flow guide channel 131, wherein the pressure relief holes 41 are communicated with the flow guide through hole 42 and the flow guide channel 131 at the same time, in the embodiment, two groups of pressure relief holes 41 and two groups of flow guide through holes 42 are arranged in a centrosymmetric mode, three groups of pressure relief holes 41 are arranged in each group, and the flow guide channel 131 penetrates through the upper end and the lower end of a valve ball 13; through the mutual cooperation of pressure release hole 41 and water conservancy diversion through-hole 42, lead-in installation cavity 12 and leading-in passageway simultaneously with high-pressure medium for pressure balance and pressure release process are more swift.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides an oil gas exploitation equipment is with guide's lumen constant pressure formula superhigh pressure ball valve which characterized in that includes:
the valve comprises a main valve body, wherein an auxiliary valve body is arranged on one side of the main valve body, an installation cavity is arranged in the main valve body, a valve ball is rotatably connected in the installation cavity, a flow guide channel is formed in the middle of the valve ball, and a valve rod fixed on the valve ball is rotatably connected to the main valve body;
the first sealing valve seat and the second sealing valve seat are movably connected to the main valve body and oppositely arranged and are in sealing fit with the two sides of the valve ball, sealing surfaces which are in sealing contact with the valve ball are arranged on the first sealing valve seat and the second sealing valve seat, a first sealing elastic part is arranged between the first sealing valve seat and the main valve body, and a second sealing elastic part is arranged between the second sealing valve seat and the auxiliary valve body; and the number of the first and second groups,
and the pressure relief structure is arranged on the valve ball and used for guiding high-pressure medium to the mounting cavity after the valve ball rotates and opens a preset angle so as to form a pressure balance state.
2. The pilot middle chamber constant pressure type ultrahigh pressure ball valve for oil and gas exploitation equipment according to claim 1, wherein the pressure relief structure comprises a plurality of pressure relief holes arranged on one side of the flow guide channel, and the pressure relief holes are communicated with the flow guide channel.
3. The pilot middle chamber constant pressure type ultrahigh pressure ball valve for oil and gas exploitation equipment according to claim 1, wherein the pressure relief structure comprises: the pressure relief device comprises a flow guide through hole communicated with the installation cavity and a plurality of pressure relief holes arranged on one side of the flow guide channel, wherein the pressure relief holes are communicated with the flow guide through hole.
4. The pilot middle chamber constant pressure type ultrahigh pressure ball valve for oil and gas exploitation equipment according to claim 3, wherein the pressure relief hole is simultaneously communicated with the flow guide through hole and the flow guide channel.
5. The pilot middle chamber constant pressure type ultrahigh pressure ball valve for oil and gas exploitation equipment according to claim 2, wherein two groups of pressure relief holes are arranged in a centrosymmetric manner.
6. The pilot middle chamber constant pressure type ultrahigh pressure ball valve for oil and gas exploitation equipment according to claim 3 or 4, wherein the pressure relief holes and the flow guide through holes are arranged in two groups in a centrosymmetric manner.
7. The pilot middle chamber constant pressure type ultrahigh pressure ball valve for oil and gas exploitation equipment according to claim 2 or 3, wherein the plurality of pressure relief holes are arranged in an arc shape around the flow guide channel.
8. The pilot middle chamber constant pressure type ultrahigh pressure ball valve for oil and gas exploitation equipment according to claim 1, wherein the first elastic sealing element and the second elastic sealing element both adopt springs, a first caulking groove is formed in the first sealing valve seat, the first elastic sealing element is embedded in the first caulking groove, a second caulking groove is formed in the second sealing valve seat, and the second sealing element is embedded in the second caulking groove.
9. The pilot middle chamber constant pressure type ultrahigh pressure ball valve for oil and gas exploitation equipment according to claim 1, wherein connecting convex columns are arranged at two ends of the ball valve, a pivot shaft is arranged in the main valve body, a bearing is embedded in the pivot shaft, and the bearing is sleeved on the connecting convex columns.
10. The pilot middle chamber constant pressure type ultrahigh pressure ball valve for oil and gas exploitation equipment according to claim 1, wherein a sealing gland is arranged on the main valve body, and a sealing packing is arranged between the sealing gland and the valve rod.
CN202110286360.2A 2021-03-17 2021-03-17 Pilot middle cavity constant-pressure type ultrahigh-pressure ball valve for oil and gas exploitation equipment Pending CN112923094A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110286360.2A CN112923094A (en) 2021-03-17 2021-03-17 Pilot middle cavity constant-pressure type ultrahigh-pressure ball valve for oil and gas exploitation equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110286360.2A CN112923094A (en) 2021-03-17 2021-03-17 Pilot middle cavity constant-pressure type ultrahigh-pressure ball valve for oil and gas exploitation equipment

Publications (1)

Publication Number Publication Date
CN112923094A true CN112923094A (en) 2021-06-08

Family

ID=76175786

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110286360.2A Pending CN112923094A (en) 2021-03-17 2021-03-17 Pilot middle cavity constant-pressure type ultrahigh-pressure ball valve for oil and gas exploitation equipment

Country Status (1)

Country Link
CN (1) CN112923094A (en)

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