CN208041202U - Orifice-plate type is anti-cavitation, noise reduction high-pressure difference regulating ball valve - Google Patents
Orifice-plate type is anti-cavitation, noise reduction high-pressure difference regulating ball valve Download PDFInfo
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- CN208041202U CN208041202U CN201820254708.3U CN201820254708U CN208041202U CN 208041202 U CN208041202 U CN 208041202U CN 201820254708 U CN201820254708 U CN 201820254708U CN 208041202 U CN208041202 U CN 208041202U
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Abstract
The utility model belongs to control valve for fluids technical field, it is related to a kind of ball valve, specifically a kind of orifice-plate type is anti-cavitation, noise reduction high-pressure difference regulating ball valve, including valve body, it is in the symmetrical adjustment type valve seat of 180 degree that two are coaxially disposed on the valve body, body cavity is equipped with valve ball between corresponding to two adjustment type valve seats, and ball surface forms sphere-contact sealing pair with adjustment type valve seat, and valve ball is connected with transmission shaft；It is equipped with multi-layer decompression orifice plate in the runner of valve ball, the hole being distributed in cellular concentric circumferences is equipped on every layer of decompression orifice plate, the hole mutual dislocation arrangement on adjacent two pieces of decompressions orifice plate.The ball-valve structure is ingenious, reasonable design, and the harsh operating mode suitable for High Pressure Difference, easily to cavitate fundamentally can avoid bubble from generating, and ensures equipment safety, stabilization, Effec-tive Function.
Description
Technical field
The utility model belongs to control valve for fluids technical field, is related to a kind of ball valve, and specifically a kind of orifice-plate type is anti-
Cavitation, noise reduction high-pressure difference regulating ball valve.
Background technology
It is automatically controlled using technological parameters such as temperature, pressure, flows as by control variable with realizing in industrial control system.
Control valve has excellent accuracy during the control of the technological parameters such as pressure, flow, is often widely used, with automatic
The continuous improvement of change process, high temperature, the operating mode of high pressure harshness are increasingly common, and then to controlling the requirement of valve performance also continuous
Raising.But control valve easily occurs washing away in high-pressure fluid control, flash distillation and the phenomenon that cavitation, this not only influences to control
The selection of valve calculates, and can also cause noise, the vibration even damage of valve, greatly shorten the service life of control valve, reduce it
Reliability, and then industrial system device production efficiency is caused to decline to a great extent, whole process control system may be caused complete when serious
Pamplegia paralysis causes huge economic loss, therefore this is a very important problem.
When liquid medium in pipeline flows through the throttling section of valve, flow velocity increases, static pressure reduces, when medium is disconnected from throttling
Face is until the static pressure of valve export decreases to or below saturated vapour pressure of medium at a temperature of valve inlet, partially liq
It will be vaporized into gas, flass occur, a large amount of bubbles will be generated in valve chamber at this time.If downstream pressure is not maintained at full
With vapour pressure hereinafter, but rise suddenly again after throttling section, flashing the bubble of generation pressure-rupturable and will return liquid
State generates cavitation.When generating cavitation, the bubble phase of generation is flashed after explosion, a large amount of bubble eruptions generate all
Energy concentrates on breakdown point, forms great impact force, and if breakdown point just close to valve or inner wall of the pipe, impact force
Many thickly dotted apertures can be corroded in material surface, then be expanded into cave gradually, finally slowly tear material surface, into
And " cavitation erosion " phenomenon of fluid occurs.Cavitation erosion can bring some significantly to endanger in industrial process control system：
1, valve damages：Cavitation erosion caused by cavitation phenomenon destroys metal material in valve especially valve body, spool, valve seat
Extremely serious, the exposure of most metals material is aoxidized in air, and surface can form a thin layer of oxide film, and one
Protection materials are determined in degree from corrosion, and cavitation can within the very short time destroy protective film, make medium to material
The corrosion rate of material is accelerated；
2, noise：Flash distillation is formed by a large amount of bubbles and concentrates explosion in succession in a short time, forms that frequency is wider to make an uproar
Sound not only influences the normal use of equipment, the physical and mental health of field personnel is had an effect on, also to the life cycle of surrounding resident
It causes to seriously endanger in border；
3, it vibrates：A large amount of bubbles concentrate explosion that valve is made vertically and horizontally to generate violent high-frequency vibration, are easy to draw
The strong resonance for playing field pipes and miscellaneous equipment, accelerates the mechanical wear of pipeline and valve, equipment is even resulted in when serious
Failure causes serious accident.
In the current existing solution to the above problem, multisection type multilevel decompression regulating valve or fan are selected mostly
The valves such as palace formula sleeve adjusting valve are coped with, but due to structure feature possessed by straight stroke valve so that there are still streams for it
Logical the shortcomings of ability is small, flow resistance is big, volume is heavy, largely restrict the application range of product.
Invention content
The utility model is in view of the above-mentioned problems, provide that a kind of orifice-plate type is anti-cavitation, noise reduction high-pressure difference regulating ball valve, the ball valve
Clever structure, reasonable design, the harsh operating mode suitable for High Pressure Difference, easily to cavitate, fundamentally can avoid bubble from generating, and ensure
Equipment safety, stabilization, Effec-tive Function.
According to the technical solution of the utility model：A kind of orifice-plate type is anti-cavitation, noise reduction high-pressure difference regulating ball valve, including valve
Body, coaxial arrangement two is in the symmetrical adjustment type valve seat of 180 degree on the valve body, and body cavity corresponds to two adjustment type valve seats
Between be equipped with valve ball, ball surface forms sphere-contact sealing pair with adjustment type valve seat, and valve ball is connected with transmission shaft；Its
It is characterized in that：It is equipped with multi-layer decompression orifice plate in the runner of valve ball, is equipped in cellular concentric circles on every layer of decompression orifice plate
The hole of week distribution, the adjacent two pieces hole mutual dislocation arrangements being depressured on orifice plate.
Sealing element, support ring are equipped between the adjustment type valve seat and valve body as a further improvement of the utility model,
And disk spring.
As a further improvement of the utility model, the sealing element be high temperature resistant, corrosion resistant flexible graphite packing or
Person's molded graphite filler.
The circulation passage of the adjustment type valve seat is equipped with flow-rate adjustment window as a further improvement of the utility model,
Flow-rate adjustment window is spherical surface with the matched face of valve ball.
Four layers of decompression orifice plate, four layers of decompression are equipped in the runner of the valve ball as a further improvement of the utility model,
Orifice plate is respectively first order decompression orifice plate, second level decompression orifice plate, third level decompression orifice plate, fourth stage decompression orifice plate.
As a further improvement of the utility model, the disk spring be separately mounted on the inside of valve body import end boss and
On the inside of outlet end on boss, sealing force is passed through support by one side contacts boss of disk spring, another corresponding support ring of side compression
Ring is transferred on sealing element, provides initial preload sealing force, and to form sealing between adjustment type valve seat and valve body.
The valve ball is connected with transmission shaft by tongue-and-groove as a further improvement of the utility model,.
The utility model has technical effect that：(1), the valve ball in the utility model is multiaperture-type valve ball component, high
When pressure medium flows through orifice-plate type valve ball component, pressure repeatedly reduces between multilevel decompression orifice plate, pressure drop caused by every level-one
It is not enough to form flash distillation, and then eliminates the generation of cavitation phenomenon；
(2), the valve ball runner in the utility model is relatively long, and item is created for more decompression series are arranged in runner
Part so that the utility model decompression grade reach 4 grades it is even higher, can be adapted for bigger pressure difference；
(3), the adjusting window in the utility model is arranged on adjustment type valve seat, can be realized according to different duty requirements
Different discharge characteristics, and adjust window design convenient processing and manufacture on valve seat；
(4), the valve ball in the utility model can make modular assembly, and the orifice plate installed in valve ball is by being detachably connected
Make it that can clear up or replace, keeps maintaining more convenient；
(5), the noise reduction orifice plate in the utility model is evenly distributed with cellular small structure using concentric circumferences, can reduce medium flow field
Speed and noise.
Description of the drawings
Fig. 1 is the structure sectional view of the utility model.
Fig. 2 is the structure sectional view of valve ball in Fig. 1.
Fig. 3 is the structure sectional view of adjustment type valve seat in Fig. 1.
Fig. 4 is the axis side view of adjustment type valve seat.
Fig. 5 is multilevel decompression orifice plate decompression principle figure.
Fig. 6 is the axis side view for being depressured orifice plate.
Specific implementation mode
Specific embodiment of the present utility model is further described below in conjunction with the accompanying drawings.
In Fig. 1 ~ 6, including valve body 1, input end 1a, outlet end 1b, adjustment type valve seat 2, valve ball 3, the first orifice plate 3a, second
Orifice plate 3b, third orifice plate 3c, the 4th orifice plate 3d, transmission shaft 4, sealing element 5, support ring 6, disk spring 7 etc..
As shown in Figure 1 and Figure 2, adjustment type valve seat 2, close is separately installed on the inside of 1 input end 1a of valve body and on the inside of the 1b of outlet end
Sealing 5, support ring 6 and disk spring 7, both sides adjustment type valve seat 2 is symmetrical and coaxially arranged in 180 degree, and valve ball 3 is mounted on valve body
In 1 inner cavity and between two adjustment type valve seats 2,3 surface of valve ball and 2 sphere-contact of adjustment type valve seat；In the runner of valve ball 3
There are 4 mutually independent the first orifice plate 3a with honeycomb structure, the second orifice plate 3b, third orifice plate 3c, the 4th orifice plate 3d mutually wrong
Position arrangement.
As shown in Fig. 1, Fig. 3, Fig. 4, in the utility model embodiment, 2 center of adjustment type valve seat, which is equipped with, adjusts window 2a, and
And adjusting window 2a can be processed into the window of different flow characteristic as needed.It is provided in adjustment type due to adjusting window 2a
On valve seat 2 rather than on valve ball 3, it is only necessary to replace different valve seats and can be obtained a variety of different flow-adjusting characteristics.
As shown in Figure 3, Figure 4, in the utility model embodiment, it is spherical to adjust sides of the window 2a towards valve ball 3, this
The stickiness that sample is adjusted between window 2a and valve ball 3 is preferable, eliminates traditional sleeve adjusting valve or guide's regulating valve opens wink
Between between clearance flow, be conducive to reduce adjust dead zone.
As shown in Figure 1 and Figure 2, in the utility model embodiment, by adjustment type valve seat 2, sealing element 5, support ring 6 and dish
Spring 7 forms valve component.Disk spring 7 is separately mounted on the inside of 1 input end of valve body and on the inside of outlet end on boss, dish-shaped bullet
Sealing force is transferred to by support ring 6 on sealing element 5 by 7 one side contacts boss of spring, another side compression support ring 6, is provided initial
Sealing force is pre-tightened, while making to form sealing between adjustment type valve seat 2 and valve body 1.Sealing element 5 preferably uses high temperature resistant, corrosion-resistant
Flexible graphite packing or molded graphite filler.Graphite packing can bear higher temperature, can be by the applicable highest of valve
Temperature is increased to by 250 DEG C to 500 DEG C.
The course of work and operation principle of the utility model are as follows：As shown in figure 5, high-pressure medium is flowed from valve input end 1a
Enter, the adjusting window 2a on type valve seat 2 enters 3 runner of valve ball after the adjustment, when high-pressure medium flows through the orifice plate in 3 channel of valve ball
When, pressure difference between the first orifice plate 3a, the second orifice plate 3b, third orifice plate 3c, the 4th orifice plate 3d by multiple, uniform reduction, it is each
Pressure drop caused by grade is not enough to form flash distillation, has been inherently eliminated cavitation phenomenon.And relatively due to 3 runner of valve ball
Long, this is also that more decompression series are arranged in 3 channel of valve ball to create condition so that the utility model decompression grade reaches 4
Grade is even higher, can be adapted for bigger pressure difference.
Claims (7)
1. a kind of orifice-plate type is anti-cavitation, noise reduction high-pressure difference regulating ball valve, including valve body（1）, the valve body（1）Upper coaxial arrangement two
A is in the symmetrical adjustment type valve seat of 180 degree（2）, valve body（1）Inner cavity corresponds to two adjustment type valve seats（2）Between be equipped with valve
Ball（3）, valve ball（3）Surface and adjustment type valve seat（2）Form sphere-contact sealing pair, valve ball（3）With transmission shaft（4）It is connected；
It is characterized in that：Valve ball（3）Runner in be equipped with multi-layer decompression orifice plate, be equipped on every layer of decompression orifice plate in it is cellular together
The hole of heart circle distribution, the adjacent two pieces hole mutual dislocation arrangements being depressured on orifice plate.
2. orifice-plate type as described in claim 1 is anti-cavitation, noise reduction high-pressure difference regulating ball valve, it is characterised in that：The adjustment type
Valve seat（2）With valve body（1）Between be equipped with sealing element（5）, support ring（6）And disk spring（7）.
3. orifice-plate type as claimed in claim 2 is anti-cavitation, noise reduction high-pressure difference regulating ball valve, it is characterised in that：The sealing element
（5）For high temperature resistant, corrosion resistant flexible graphite packing or molded graphite filler.
4. orifice-plate type as described in claim 1 is anti-cavitation, noise reduction high-pressure difference regulating ball valve, it is characterised in that：The adjustment type
Valve seat（2）Circulation passage be equipped with flow-rate adjustment window（2a）, flow-rate adjustment window（2a）With valve ball（3）Matched face is ball
Face.
5. orifice-plate type as described in claim 1 is anti-cavitation, noise reduction high-pressure difference regulating ball valve, it is characterised in that：The valve ball（3）
Runner in be equipped with four layers decompression orifice plates, four layers decompression orifice plates be respectively the first order decompression orifice plate（3a）, the second level be depressured orifice plate
（3b）, the third level be depressured orifice plate（3c）, the fourth stage be depressured orifice plate（3d）.
6. orifice-plate type as claimed in claim 2 is anti-cavitation, noise reduction high-pressure difference regulating ball valve, it is characterised in that：The dish bullet
Spring（7）It is separately mounted to valve body（1）Input end（1a）Inside boss and outlet end（1b）On the boss of inside, disk spring（7）One
Side contacts boss, another corresponding support ring of side compression（6）, sealing force is passed through into support ring（6）It is transferred to sealing element（5）On,
Initial preload sealing force is provided, and makes adjustment type valve seat（2）With valve body（1）Between formed sealing.
7. orifice-plate type as described in claim 1 is anti-cavitation, noise reduction high-pressure difference regulating ball valve, it is characterised in that：The valve ball（3）
With transmission shaft（4）It is connected by tongue-and-groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820254708.3U CN208041202U (en) | 2018-02-12 | 2018-02-12 | Orifice-plate type is anti-cavitation, noise reduction high-pressure difference regulating ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820254708.3U CN208041202U (en) | 2018-02-12 | 2018-02-12 | Orifice-plate type is anti-cavitation, noise reduction high-pressure difference regulating ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208041202U true CN208041202U (en) | 2018-11-02 |
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ID=63953141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820254708.3U Active CN208041202U (en) | 2018-02-12 | 2018-02-12 | Orifice-plate type is anti-cavitation, noise reduction high-pressure difference regulating ball valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN208041202U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167468A (en) * | 2018-02-12 | 2018-06-15 | 无锡智能自控工程股份有限公司 | Orifice-plate type is anti-cavitation, noise reduction high-pressure difference regulating ball valve |
| RU2730271C2 (en) * | 2019-01-21 | 2020-08-21 | Денис Игоревич Рысенко | Ball valve |
-
2018
- 2018-02-12 CN CN201820254708.3U patent/CN208041202U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167468A (en) * | 2018-02-12 | 2018-06-15 | 无锡智能自控工程股份有限公司 | Orifice-plate type is anti-cavitation, noise reduction high-pressure difference regulating ball valve |
| RU2730271C2 (en) * | 2019-01-21 | 2020-08-21 | Денис Игоревич Рысенко | Ball valve |
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