CN108895175A - A kind of metal hard-sealing ball valve - Google Patents
A kind of metal hard-sealing ball valve Download PDFInfo
- Publication number
- CN108895175A CN108895175A CN201811003722.7A CN201811003722A CN108895175A CN 108895175 A CN108895175 A CN 108895175A CN 201811003722 A CN201811003722 A CN 201811003722A CN 108895175 A CN108895175 A CN 108895175A
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- Prior art keywords
- valve
- sealing
- valve body
- seat
- sphere
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- 238000007789 sealing Methods 0.000 title claims abstract description 119
- 239000002184 metal Substances 0.000 title claims abstract description 28
- 238000010276 construction Methods 0.000 claims abstract description 6
- 210000004907 gland Anatomy 0.000 claims description 35
- 230000002093 peripheral effect Effects 0.000 claims description 27
- 238000009434 installation Methods 0.000 claims description 12
- 238000012856 packing Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims description 4
- 239000010779 crude oil Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 5
- 239000008187 granular material Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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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
- 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
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
-
- 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
- F16K5/06—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
- F16K5/0689—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
- F16K5/08—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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The present invention discloses a kind of metal hard-sealing ball valve, including valve body, valve seat, valve rod and sphere, and sphere is located in the intracorporal spheroid chamber of valve；Valve seat includes the left valve seat and right valve seat for being symmetrically disposed on sphere two sides, and the position that valve seat is abutted with sphere is equipped with blade construction；Sealing surface between valve seat and valve body is mutually matched multi-stage stairs shape, is equipped with the first seal assembly between two sealing surfaces；First seal assembly includes the first elastic component, clamping piece and the first sealing ring；Clamping piece axial cross section is L shape; first elastic component both ends abut the vertical arm of valve body and L clevis gripping member respectively; the corner of L clevis gripping member is connected on the wherein level-one step of sealing surface of seat; first sealing ring is installed between the transverse arm tail end and sealing surface of seat of L clevis gripping member, and the valve body sealing surface on the outside of the first sealing ring is equipped with coat of metal.The present invention extends seal durability by improving the sealing structure at sealing surface, lift-off seal effect, protects elastic component, is the operating condition of crude oil especially suitable for medium.
Description
Technical field
The present invention relates to metal hard-sealing ball valve technical field, especially a kind of metal hard-sealing suitable for crude oil medium
Ball valve.
Background technique
With the development of industrialization, higher and higher to the requirement of valve.Ball body for ball valve is as opening and closing element, with flow resistance
It is small, the pressure loss is small, sealed reliable, the advantages such as easy to operate and obtain the trust of client, be widely used in petroleum gas pipe
On line.
Under crude oil operating condition, there are solid particles and acid element.Conventional ball valve, sealing surface of seat generally use soft material,
But for the crude oil for containing hard solid particle, in medium, fine particle, which is easy to be bonded on spherical surface, forms fouling, these particles
It can enter between spherical surface and sealing surface of seat during valve switch, lasting abrasion is caused to sealing surface, destroy valve
Leakproofness, cause sealing face leakage；On the other hand, solid particle bulk deposition will also result at elastic element in medium
The failure of elastic component is also resulted in and is leaked at sealing.Further, since sulfur-bearing in crude oil, has corrosiveness, valve seal to pipeline
Region is under acid condition for a long time, can be also corroded, and valve seal performance can also reduce, and valve service life reduces, and is made
It is frequent at later maintenance, maintenance cost is high.
Summary of the invention
The object of the present invention is to provide a kind of metal hard-sealing ball valves to be promoted by improving the sealing structure at sealing surface
Sealing effect extends seal durability, protects elastic component, is the operating condition of crude oil especially suitable for medium.
The technical scheme adopted by the invention is as follows：A kind of metal hard-sealing ball valve, including valve body, valve seat, valve rod and sphere, ball
Body is located in the intracorporal spheroid chamber of valve；
Valve seat includes the left valve seat and right valve seat for being symmetrically disposed on sphere two sides, and left valve seat and right valve seat respectively include abutting sphere
First end, and by the first seal assembly be tightly connected valve body inner peripheral portion second end；
In the first end of valve seat, the position abutted with sphere is equipped with the blade construction tangent with spherome surface；
The sealing surface that valve seat and valve body inner peripheral portion are tightly connected is mutual cooperation and the multi-stage stairs shape that both ends fit, valve seat
Reduced step by step by the outer diameter of first end to second end；
First seal assembly includes the first elastic component set gradually from valve body to sphere direction, clamping piece and the first sealing
Circle；Clamping piece axial cross section is L shape, and first elastic component one end abuts valve body, and the other end abuts the vertical arm of L clevis gripping member, L clevis
The corner of gripping member is connected on the wherein level-one step of sealing surface of seat, the transverse arm tail end of L clevis gripping member and sealing surface of seat and
Sealing ring installation region is equipped between valve body sealing surface, the first sealing ring is installed in the sealing ring installation region, and first
The inner peripheral portion and peripheral part of sealing ring abut sealing surface of seat and valve body sealing surface respectively；
The valve body sealing surface of sealing ring installation region peripheral part is equipped with coat of metal.
Preferably, valve rod lower end circumference is equipped with boss, and the boss peripheral part is fixedly connected with sphere by multiple reinforcement pins
Upper end.The connection between valve rod and sphere can be reinforced, preferably transmit torsional stress, at the same can uniformly bear squeeze and torsion answer
Power reduces the probability of valve rod bending deformation, extends valve service life.
Preferably, valve body includes the middle valve body positioned at sphere periphery, and is separately connected the left valve deck at middle valve body both ends
With right valve deck；Left valve seat and right valve seat pass through the first seal assembly respectively and are tightly connected left valve deck and right valve deck.
Preferably, the coat of metal is stainless steel material, heap be welded in left valve deck below sealing ring zone of action or
On right valve bonnet seal face.Stainless steel material resistance to corrosion is strong, can avoid sealing area and damages the first sealing ring because of corrosion, mentions
High sealing effect between valve deck and valve seat, further extends the service life of sealing element.
Preferably, first elastic component is cylindrical spring, and cylindrical spring one end abuts clamping piece, and the other end is embedded in left valve
In lid or right valve deck.It can guarantee low pressure pretightning force.
Preferably, the invention also includes the top flange and gland flange of valve body in being connected, valve rod is through top flange and gland
Sphere upper end is connected after flange；The second seal assembly is additionally provided between valve rod and gland flange and top flange；Under gland flange
End is fixed in middle valve body, and third seal assembly is additionally provided between gland flange lower end circumference and middle valve body.
Preferably, second seal assembly includes the pressing sleeve from top to bottom set gradually, the second elastic component, pressure ring, V-arrangement
Sealing ring and lip-type packing；The inner peripheral portion upper end of gland flange is equipped with first boss and second boss, and pressing sleeve axial cross section is L
The corner of shape, L shape pressing sleeve is connected in the first boss, and the transverse arm of L shape pressing sleeve abuts top flange, the vertical arm position of L shape pressing sleeve
Between valve rod and gland flange；V-ring and lip-type packing are located at the two sides up and down of the second boss.
Preferably, the third seal assembly includes the second v-ring below the second pressure ring and the second pressure ring.It can protect
Demonstrate,prove the sealing between gland flange and valve body.
Preferably, gland flange peripheral part is two stage steps shape structure, and gland flange upper end diameter is greater than lower end diameter,
The lower end surface of the upper end step of gland flange is equipped with third boss, is additionally provided with winding between the third boss and middle valve body
Pad.
Preferably, the 4th seal assembly, the 4th sealing are equipped between middle valve body both ends inner peripheral portion and left valve deck and right valve deck
Component includes the third pressure ring that one end abuts valve deck axial end face, and abuts the third v-ring of the third pressure ring other end；In
The second wound gasket is additionally provided between valve body both ends end face and left valve deck and right valve deck respectively.It realizes more between valve body and valve deck
Resealing.
Beneficial effect
Compared with prior art, the present invention has the following advantages that and improves：
（1）When runner passes through granule medium, such as medium is crude oil, and valve seat blade construction can will be attached to ball seal face
Granule medium scraped clean, ensure the service life of sealing surface；
（2）Valve seat and valve body（Valve deck）Between the cooperation of tilting table stepped structure sealing surface both ends mutually stick to both simultaneously, be
First seal assembly provides enclosure space, so that solid particle cannot be introduced into the first seal assembly installation region, corrosion or damage
Bad elastic component and sealing ring can ensure that elastic component and sealing ring in the first seal assembly etc. can work normally for a long time, valve
Longtime running is stablized；
（3）Valve body（Valve deck）The coat of metal of built-up welding on sealing surface, can further avoid the sealing ring in the first seal assembly
It is corroded or scratches, extend the service life of the first sealing ring, while improving the sealing effect between valve deck and valve seat；
（4）Between valve body and valve deck, valve body and gland flange and valve rod and gland flange be provided with it is multi-sealed, effectively
Sealing performance is improved, reduces medium leakage, while valve later maintenance cost can be reduced.
Detailed description of the invention
Fig. 1 show the structural schematic diagram of metal hard-sealing ball valve of the present invention；
Fig. 2 show sphere and valve rod and passes through the partial sectional view of reinforcement pin connection；
Fig. 3 show partial structurtes enlarged drawing at I in Fig. 1；
Fig. 4 show partial structurtes enlarged drawing at II in Fig. 1.
Specific embodiment
It is further described below in conjunction with the drawings and specific embodiments.
With reference to Fig. 1, metal hard-sealing ball valve of the invention, including valve body, valve seat 5, valve rod 3 and sphere 4, sphere 4 are located at
In the intracorporal spheroid chamber of valve；
Valve seat includes the left valve seat and right valve seat for being symmetrically disposed on sphere two sides, and left valve seat and right valve seat respectively include abutting sphere
4 first end, and the second end by the first seal assembly sealed connection valve body inner peripheral portion；
In the first end of valve seat 5, the position abutted with sphere 4 is equipped with the blade construction tangent with spherome surface；
The sealing surface that valve seat 5 and valve body inner peripheral portion are tightly connected is mutual cooperation and the multi-stage stairs shape that both ends fit, valve
Seat 5 is reduced step by step by the outer diameter of first end to second end；
Refering to what is shown in Fig. 3, first seal assembly includes the first elastic component 8 set gradually from valve body to 4 direction of sphere, folder
Gripping member 9 and the first sealing ring 10；9 axial cross section of clamping piece is L shape, and 8 one end of the first elastic component abuts valve body, and the other end abuts L
The vertical arm of clevis gripping member, the corner of L clevis gripping member are connected on the wherein level-one step of sealing surface of seat, the cross of L clevis gripping member
Sealing ring installation region is equipped between arm tail end and sealing surface of seat and valve body sealing surface, the first sealing ring 10 is installed on described close
In seal installation region, and the inner peripheral portion of the first sealing ring and peripheral part abut sealing surface of seat and valve body sealing surface respectively；
The valve body sealing surface of sealing ring installation region peripheral part is equipped with coat of metal 23.
Embodiment
In the embodiment of Fig. 1 to Fig. 4, valve body includes the middle valve body 1 positioned at sphere periphery, and is separately connected middle valve body 1
The left valve deck and right valve deck 2 at both ends；Left valve seat and right valve seat 5 are tightly connected left valve deck and the right side by the first seal assembly respectively
Valve deck.It is detachably connected between middle valve body 1 and left and right valve deck 2 using stud nut, it is easy to assembly simple.
Refering to what is shown in Fig. 3, the coat of metal 23 on the outside of the first sealing ring is stainless steel material, heap is welded in sealing ring activity
On 2 sealing surface of left valve deck or right valve deck below region.Stainless steel material resistance to corrosion is strong, can avoid sealing area because of corrosion
And the first sealing ring is damaged, the sealing effect between valve deck and valve seat is improved, the service life of sealing element is further extended.
First sealing ring 10 uses lip-type packing, and sealing lip is towards L clevis gripping member 9, when being influenced by external force, first
Sealing ring 10 can in sealing ring installation region telescopic movable.
First elastic component 8 is cylindrical spring, and cylindrical spring one end abuts the vertical arm of L clevis gripping member, and the other end is embedded in left valve
In lid or right valve deck.It can guarantee low pressure pretightning force.
Refering to what is shown in Fig. 2,3 lower end circumference of valve rod is equipped with boss, the boss peripheral part is fixed by multiple reinforcement pins 22
Connect sphere upper end.The connection between valve rod and sphere can be reinforced, torsional stress is preferably transmitted, while can uniformly bear to squeeze
Pressure and torsional stress reduce the probability of valve rod bending deformation, extend valve service life.
In conjunction with shown in Fig. 1 and Fig. 4, the present embodiment further includes the top flange 7 and gland flange 6 of valve body in being connected, and valve rod 3 passes through
Sphere upper end is connected after wearing top flange and gland flange；The second sealing group is additionally provided between valve rod and gland flange and top flange
Part；Gland flange lower end is fixed in middle valve body, and third sealing is additionally provided between gland flange lower end circumference and middle valve body
Component.
With reference to Fig. 4, second seal assembly includes the pressing sleeve 21 from top to bottom set gradually, the second elastic component 20, pressure
Ring 19, v-ring 18 and lip-type packing 17；The inner peripheral portion upper end of gland flange is equipped with first boss and second boss, pressure
Set axial cross section is L shape, and the corner of L shape pressing sleeve is connected in the first boss, and the transverse arm of L shape pressing sleeve abuts top flange, L shape
The vertical arm of pressing sleeve is between valve rod and gland flange；It is convex that v-ring 18 and lip-type packing 17 are located at described second
The two sides up and down of platform.
With reference to Fig. 4, third seal assembly includes the second v-ring 14 below the second pressure ring 15 and the second pressure ring.It can
Guarantee the sealing between gland flange and valve body.
6 peripheral part of gland flange is two stage steps shape structure, and gland flange upper end diameter is greater than lower end diameter, gland method
The lower end surface of blue upper end step is equipped with third boss, is additionally provided with wound gasket 16 between the third boss and middle valve body.
The 4th seal assembly, the 4th seal assembly packet are equipped between middle 1 both ends inner peripheral portion of valve body and left valve deck and right valve deck 2
The third pressure ring 12 that one end abuts valve deck axial end face is included, and abuts the third v-ring 11 of 12 other end of third pressure ring；In
The second wound gasket 13 is additionally provided between valve body both ends end face and left valve deck and right valve deck respectively.It realizes between valve body and valve deck
It is multi-sealed.
The present invention extends seal durability, protection by improving the sealing structure at sealing surface, lift-off seal effect
Elastic component is the operating condition of crude oil especially suitable for medium.Specifically has the following advantages that and improve：
（1）When runner passes through granule medium, such as medium is crude oil, and valve seat blade construction can will be attached to ball seal face
Granule medium scraped clean, ensure the service life of sealing surface；
（2）Valve seat and valve body（Valve deck）Between the cooperation of tilting table stepped structure sealing surface both ends mutually stick to both simultaneously, be
First seal assembly provides enclosure space, so that solid particle cannot be introduced into the first seal assembly installation region, corrosion or damage
Bad elastic component and sealing ring can ensure that elastic component and sealing ring in the first seal assembly etc. can work normally for a long time, valve
Longtime running is stablized；
（3）Valve body（Valve deck）The coat of metal of built-up welding on sealing surface, can further avoid the sealing ring in the first seal assembly
It is corroded or scratches, extend the service life of the first sealing ring, while improving the sealing effect between valve deck and valve seat；
（4）Between valve body and valve deck, valve body and gland flange and valve rod and gland flange be provided with it is multi-sealed, effectively
Sealing performance is improved, reduces medium leakage, while valve later maintenance cost can be reduced.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of metal hard-sealing ball valve, including valve body, valve seat, valve rod and sphere, sphere is located in the intracorporal spheroid chamber of valve；Its
It is characterized in：
Valve seat includes the left valve seat and right valve seat for being symmetrically disposed on sphere two sides, and left valve seat and right valve seat respectively include abutting sphere
First end, and by the first seal assembly be tightly connected valve body inner peripheral portion second end；
In the first end of valve seat, the position abutted with sphere is equipped with the blade construction tangent with spherome surface；
The sealing surface that valve seat and valve body inner peripheral portion are tightly connected is mutual cooperation and the multi-stage stairs shape that both ends fit, valve seat
Reduced step by step by the outer diameter of first end to second end；
First seal assembly includes the first elastic component set gradually from valve body to sphere direction, clamping piece and the first sealing
Circle；Clamping piece axial cross section is L shape, and first elastic component one end abuts valve body, and the other end abuts the vertical arm of L clevis gripping member, L clevis
The corner of gripping member is connected on the wherein level-one step of sealing surface of seat, the transverse arm tail end of L clevis gripping member and sealing surface of seat and
Sealing ring installation region is equipped between valve body sealing surface, the first sealing ring is installed in the sealing ring installation region, and first
The inner peripheral portion and peripheral part of sealing ring abut sealing surface of seat and valve body sealing surface respectively；
The valve body sealing surface of sealing ring installation region peripheral part is equipped with coat of metal.
2. metal hard-sealing ball valve according to claim 1, it is characterized in that：Valve rod lower end circumference is equipped with boss, described convex
Platform peripheral part is fixedly connected with sphere upper end by multiple reinforcement pins.
3. metal hard-sealing ball valve according to claim 1, it is characterized in that：Valve body includes the middle valve positioned at sphere periphery
Body, and it is separately connected the left valve deck and right valve deck at middle valve body both ends；Left valve seat and right valve seat pass through the first sealing group respectively
Part is tightly connected left valve deck and right valve deck.
4. metal hard-sealing ball valve according to claim 3, it is characterized in that：The coat of metal is stainless steel material,
Heap is welded on the left valve deck below sealing ring zone of action or right valve bonnet seal face.
5. metal hard-sealing ball valve according to claim 3, it is characterized in that：First elastic component is cylindrical spring, circle
Column spring one end abuts clamping piece, and the other end is embedded in left valve deck or right valve deck.
6. metal hard-sealing ball valve according to claim 3, it is characterized in that：It further include the top flange and pressure of valve body in being connected
Lid flange, valve rod connect sphere upper end after top flange and gland flange；Between valve rod and gland flange and top flange also
Equipped with the second seal assembly；Gland flange lower end is fixed in middle valve body, and between gland flange lower end circumference and middle valve body
It is additionally provided with third seal assembly.
7. metal hard-sealing ball valve according to claim 6, it is characterized in that：Second seal assembly includes from top to bottom
Pressing sleeve, the second elastic component, pressure ring, v-ring and the lip-type packing set gradually；The inner peripheral portion upper end of gland flange is equipped with
First boss and second boss, pressing sleeve axial cross section are L shape, and the corner of L shape pressing sleeve is connected in the first boss, L shape pressure
The transverse arm of set abuts top flange, and the vertical arm of L shape pressing sleeve is between valve rod and gland flange；V-ring and lip-type packing
It is located at the two sides up and down of the second boss.
8. metal hard-sealing ball valve according to claim 6, it is characterized in that：The third seal assembly includes the second pressure ring
With the second v-ring below the second pressure ring.
9. metal hard-sealing ball valve according to claim 6, it is characterized in that：Gland flange peripheral part is two stage steps shape knot
Structure, and gland flange upper end diameter is greater than lower end diameter, the lower end surface of the upper end step of gland flange is equipped with third boss, institute
It states and is additionally provided with wound gasket between third boss and middle valve body.
10. metal hard-sealing ball valve according to claim 3, it is characterized in that：Middle valve body both ends inner peripheral portion and left valve deck and
The 4th seal assembly is equipped between right valve deck, the 4th seal assembly includes the third pressure ring that one end abuts valve deck axial end face, and
Abut the third v-ring of the third pressure ring other end；It is also set respectively between middle valve body both ends end face and left valve deck and right valve deck
There is the second wound gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811003722.7A CN108895175A (en) | 2018-08-30 | 2018-08-30 | A kind of metal hard-sealing ball valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811003722.7A CN108895175A (en) | 2018-08-30 | 2018-08-30 | A kind of metal hard-sealing ball valve |
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| Publication Number | Publication Date |
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| CN108895175A true CN108895175A (en) | 2018-11-27 |
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| CN201811003722.7A Pending CN108895175A (en) | 2018-08-30 | 2018-08-30 | A kind of metal hard-sealing ball valve |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109506006A (en) * | 2018-12-07 | 2019-03-22 | 超达阀门集团股份有限公司 | A kind of valve seat sealing mechanism suitable for worst cold case |
| CN110686092A (en) * | 2019-10-30 | 2020-01-14 | 昆山维萨阀门股份有限公司 | Hemisphere metal seal fixed ball valve |
| CN110985750A (en) * | 2019-12-03 | 2020-04-10 | 兰州高压阀门有限公司 | Multi-block type valve seat structure for automatic seat-returning pressure regulating valve |
| CN111197663A (en) * | 2020-02-25 | 2020-05-26 | 四川精控阀门制造有限公司 | Two-body type fixed ball valve and manufacturing method thereof |
| CN111998089A (en) * | 2020-08-20 | 2020-11-27 | 永嘉赛孚阀门有限公司 | High-temperature hard sealing ball valve |
| CN112610717A (en) * | 2021-02-01 | 2021-04-06 | 温州青鸟自控阀门有限公司 | Automatic decoking multi-layer sealing discharging ball valve with double scrapers |
| CN112943967A (en) * | 2021-04-23 | 2021-06-11 | 温州市安通阀门有限公司 | Hard sealing ball valve |
| CN114352764A (en) * | 2022-01-17 | 2022-04-15 | 成都成高阀门有限公司 | Cryogenic ball valve and using method thereof |
| CN115899310A (en) * | 2023-01-06 | 2023-04-04 | 无锡斯考尔自动控制设备有限公司 | High-frequency metal hard sealing ball valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109506006A (en) * | 2018-12-07 | 2019-03-22 | 超达阀门集团股份有限公司 | A kind of valve seat sealing mechanism suitable for worst cold case |
| CN110686092A (en) * | 2019-10-30 | 2020-01-14 | 昆山维萨阀门股份有限公司 | Hemisphere metal seal fixed ball valve |
| CN110985750A (en) * | 2019-12-03 | 2020-04-10 | 兰州高压阀门有限公司 | Multi-block type valve seat structure for automatic seat-returning pressure regulating valve |
| CN111197663A (en) * | 2020-02-25 | 2020-05-26 | 四川精控阀门制造有限公司 | Two-body type fixed ball valve and manufacturing method thereof |
| CN111998089A (en) * | 2020-08-20 | 2020-11-27 | 永嘉赛孚阀门有限公司 | High-temperature hard sealing ball valve |
| CN112610717A (en) * | 2021-02-01 | 2021-04-06 | 温州青鸟自控阀门有限公司 | Automatic decoking multi-layer sealing discharging ball valve with double scrapers |
| CN112610717B (en) * | 2021-02-01 | 2024-05-24 | 温州青鸟自控阀门有限公司 | Automatic decoking multi-level sealing unloading ball valve with double scrapers |
| CN112943967A (en) * | 2021-04-23 | 2021-06-11 | 温州市安通阀门有限公司 | Hard sealing ball valve |
| CN112943967B (en) * | 2021-04-23 | 2021-11-23 | 温州市安通阀门有限公司 | Hard sealing ball valve |
| CN114352764A (en) * | 2022-01-17 | 2022-04-15 | 成都成高阀门有限公司 | Cryogenic ball valve and using method thereof |
| CN114352764B (en) * | 2022-01-17 | 2022-08-05 | 成都成高阀门有限公司 | Cryogenic ball valve and using method thereof |
| CN115899310A (en) * | 2023-01-06 | 2023-04-04 | 无锡斯考尔自动控制设备有限公司 | High-frequency metal hard sealing ball valve |
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Address after: 215324 No. 18 Jinxi Road, Jinxi Town, Kunshan City, Suzhou City, Jiangsu Province Applicant after: Kunshan Weisa Valve Co., Ltd. Address before: 215324 No. 18 Jinxi Road, Jinxi Town, Kunshan City, Suzhou City, Jiangsu Province Applicant before: Kunshan Weisa Valve Co., Ltd. |