CN104728463A - Ball valve core sphere with equal-percent flow characteristic - Google Patents
Ball valve core sphere with equal-percent flow characteristic Download PDFInfo
- Publication number
- CN104728463A CN104728463A CN201310694230.8A CN201310694230A CN104728463A CN 104728463 A CN104728463 A CN 104728463A CN 201310694230 A CN201310694230 A CN 201310694230A CN 104728463 A CN104728463 A CN 104728463A
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- CN
- China
- Prior art keywords
- hole
- equal
- ball valve
- diameter
- valve
- 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
Links
Classifications
-
- 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
- F16K5/08—Details
- F16K5/12—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
The invention discloses a ball valve core sphere with the equal-percent flow characteristic. The ball valve core sphere comprises a sphere body. An irregular through hole is formed in the sphere body and formed by the encircling of two sections of symmetric isosceles arc lines and one section of a bottom arc line, the diameter of the bottom arc line can meet a certain requirement of the diameter of the sphere body, and the intersecting point of the two sections of the symmetric isosceles arc lines is located on the circumference of the bottom arc lines and on the horizontal center line. The effective flow area of the irregular through hole changes along with the relative opening degree of the valve so that the changing relationship between the relative opening of the valve and the effective flow area of the irregular through hole conforms to the equal-percent flow characteristic. The ball valve core sphere with the equal-percent flow characteristic overcomes the defects of the traditional ball valves, has the equal-percent flow characteristic, is applicable to the regulation of the hot and cold fluid flow of a heating and ventilation system, achieves accurate temperature control, and reduces the energy consumption.
Description
Technical field
The present invention relates to the spool spheroid that a kind of ball valve has equal percentage flow characteristics.
Background technique
Be applied to heat exchanger, if the modulating valve of the surface cooler, heater etc. of air-conditioner set is because of the heat exchange characteristics of heat exchanger, it must have equal percentage flow characteristics, and valve opening and exchange heat just can be made to be output into linear relationship, to obtain fine adjustment to temperature and control.The valve usually with equal percentage flow characteristics adopts stop valve or telescoping valve pattern.
But for stop valve or telescoping valve, ball valve configurations is simple, and low cost of manufacture, has wider application area.
General ball valve opens and closes circulation medium by spool spheroid, and its throttling is approximately equal to orifice throttle principle, and for incompressible fluid, as media such as water, the rate-of flow formula of ball valve is:
q
χ=κA
χ （1）
In formula (1): q
χfor the rate-of flow under relative opening degree χ, κ are discharge coefficient (approximately constant), A
χfor the flow area under relative opening degree χ, Δ P be valve pressure reduction, ρ is fluid density.
During valve wide open (relative opening degree 100%), the rate-of flow of ball valve is:
q
max=κA
max （2）
In formula (2): q
maxfor flow, A during valve wide open
maxfor flow area during valve wide open.
Therefore, when valve pressure differential deltap P is constant, the mathematic(al) representation of equal percent regulating characteristic is:
q
χ=q
maxR
(χ-1） （3）
In formula (3): R is valve regulating ratio.
Therefore the formula of equal percent regulating characteristic can be reduced to the relation of flow area and valve relative opening degree, that is:
A
χ=A
maxR
(χ-1） （4）
In formula (4), A
χfor the flow area under valve relative opening degree χ.
But the through flow hole on the spool spheroid of conventional ball valve is a circular hole, does not possess equal percentage flow characteristics, the fine adjustment of convection cell and the occasion of control can not be used for, be suitable only for the switch of fluid medium pipeline.
Summary of the invention
Technical problem to be solved by this invention is to provide the spool spheroid that a kind of ball valve has equal percentage flow characteristics, this spool spheroid overcomes the defect of conventional ball valve, there is the flow characteristics of equal percentage, be applicable to the adjustment of the cold & heat source fluid flow being applied to HVAC system, obtain accurate temperature to control, reduce energy consumption.
For solving the problems of the technologies described above, the spool spheroid that ball valve of the present invention has equal percentage flow characteristics comprises sphere body, described sphere body has special-shaped through hole, described special-shaped through hole is surrounded by two sections of symmetrical isosceles camber lines and one section of base circular arc line, when the relative opening degree change of valve, the valid circulation area of described special-shaped through hole changes thereupon, and both variation relations meet;
A
χ=A
maxR
(χ-1） （4）
In formula (4): A
χfor flow area, A under valve relative opening degree χ
maxfor flow area during valve wide open, the area of described special-shaped through hole equals A
max;
The diameter of described base circular arc line and the diameter Relationship of described sphere body are:
（5）
In formula (5): the diameter that the diameter that d is described base circular arc line, D are described sphere body,
The intersection point of described two sections of symmetrical isosceles camber lines be positioned at described base circular arc line circumferentially and be positioned on horizontal center line.
The spool spheroid due to ball valve of the present invention with equal percentage flow characteristics have employed technique scheme, namely this spool spheroid comprises sphere body, sphere body has special-shaped through hole, abnormity through hole is surrounded by two sections of symmetrical isosceles camber lines and one section of base circular arc line, the area of abnormity through hole meets the relation of flow area and valve relative opening degree, and the diameter of base circular arc line and the diameter of described sphere body meet certain relation; The intersection point of two sections of symmetrical isosceles camber lines be positioned at base circular arc line circumferentially and be positioned on horizontal center line.This spool spheroid overcomes the defect of conventional ball valve, has the flow characteristics of equal percentage, is applicable to the adjustment of the cold & heat source fluid flow being applied to HVAC system, obtains accurate temperature and controls, reduce energy consumption.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the present invention is described in further detail:
Fig. 1 is the spool spheroid schematic diagram that ball valve of the present invention has equal percentage flow characteristics.
Embodiment
As shown in Figure 1, the spool spheroid that ball valve of the present invention has equal percentage flow characteristics comprises sphere body 1, described sphere body 1 has special-shaped through hole 2, described special-shaped through hole 2 is surrounded by two sections of symmetrical isosceles camber lines 22 and one section of base circular arc line 21, when the relative opening degree change of valve, the valid circulation area of described special-shaped through hole changes thereupon, and both variation relations meet;
A
χ=A
maxR
(χ-1） （4）
In formula (4): A
χfor flow area, A under valve relative opening degree χ
maxfor flow area during valve wide open, the area of described special-shaped through hole 2 equals A
max;
The diameter of described base circular arc line 21 and the diameter Relationship of described sphere body 1 are:
（5）
In formula (5): the diameter that the diameter that d is described base circular arc line 21, D are described sphere body 1,
The intersection point of described two sections of symmetrical isosceles camber lines 22 be positioned at described base circular arc line 21 circumferentially and be positioned on horizontal center line.
This spool spheroid rotates the circulation area changing special-shaped through hole by valve rod, ball valve is made to have equal percentage flow characteristics, when adopting the ball valve of this spool spheroid to be applied to the cold & heat source fluid flow regulation of HVAC system, obtain the adjustment flow characteristics of equal percentage, thus reach fine adjustment and the control of temperature.
Claims (1)
1. a ball valve has the spool spheroid of equal percentage flow characteristics, comprise sphere body, it is characterized in that: described sphere body has special-shaped through hole, described special-shaped through hole is surrounded by two sections of symmetrical isosceles camber lines and one section of base circular arc line, when the relative opening degree change of valve, the valid circulation area of described special-shaped through hole changes thereupon, and both variation relations meet;
A
χ=A
maxR
(χ-1） （4）
In formula (4): A
χfor flow area, A under valve relative opening degree χ
maxfor flow area during valve wide open, the area of described special-shaped through hole equals A
max;
The diameter of described base circular arc line and the diameter Relationship of described sphere body are:
（5）
In formula (5): the diameter that the diameter that d is described base circular arc line, D are described sphere body,
The intersection point of described two sections of symmetrical isosceles camber lines be positioned at described base circular arc line circumferentially and be positioned on horizontal center line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310694230.8A CN104728463A (en) | 2013-12-18 | 2013-12-18 | Ball valve core sphere with equal-percent flow characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310694230.8A CN104728463A (en) | 2013-12-18 | 2013-12-18 | Ball valve core sphere with equal-percent flow characteristic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104728463A true CN104728463A (en) | 2015-06-24 |
Family
ID=53452651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310694230.8A Pending CN104728463A (en) | 2013-12-18 | 2013-12-18 | Ball valve core sphere with equal-percent flow characteristic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104728463A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681666A (en) * | 2019-02-13 | 2019-04-26 | 何泽淼 | A kind of ball valve |
| CN113408064A (en) * | 2020-03-17 | 2021-09-17 | 重庆川仪调节阀有限公司 | Method for determining equal percentage throttling sleeve opening of sleeve regulating valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55107165A (en) * | 1979-02-13 | 1980-08-16 | Akihiko Matsui | Control device for spherical valve |
| US20070209721A1 (en) * | 2006-03-07 | 2007-09-13 | Griswold Controls, Inc | High Differential Pressure, Low Torque Precision Temperature Control Valve |
| CN201065962Y (en) * | 2007-06-20 | 2008-05-28 | 湖北洪城通用机械股份有限公司 | Double-eccentricity v-shaped regulation ball valve |
| CN201090774Y (en) * | 2007-08-17 | 2008-07-23 | 深圳市南玻结构陶瓷有限公司 | Ceramic regulating ball valve |
| CN101421548A (en) * | 2006-04-13 | 2009-04-29 | Vir里齐奥工程师阀门工业股份公司 | Ball for valves and production method |
-
2013
- 2013-12-18 CN CN201310694230.8A patent/CN104728463A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55107165A (en) * | 1979-02-13 | 1980-08-16 | Akihiko Matsui | Control device for spherical valve |
| US20070209721A1 (en) * | 2006-03-07 | 2007-09-13 | Griswold Controls, Inc | High Differential Pressure, Low Torque Precision Temperature Control Valve |
| CN101421548A (en) * | 2006-04-13 | 2009-04-29 | Vir里齐奥工程师阀门工业股份公司 | Ball for valves and production method |
| CN201065962Y (en) * | 2007-06-20 | 2008-05-28 | 湖北洪城通用机械股份有限公司 | Double-eccentricity v-shaped regulation ball valve |
| CN201090774Y (en) * | 2007-08-17 | 2008-07-23 | 深圳市南玻结构陶瓷有限公司 | Ceramic regulating ball valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681666A (en) * | 2019-02-13 | 2019-04-26 | 何泽淼 | A kind of ball valve |
| CN113408064A (en) * | 2020-03-17 | 2021-09-17 | 重庆川仪调节阀有限公司 | Method for determining equal percentage throttling sleeve opening of sleeve regulating valve |
| CN113408064B (en) * | 2020-03-17 | 2023-07-21 | 重庆川仪调节阀有限公司 | Method for determining equal-percentage throttling sleeve opening of sleeve regulating valve |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150624 |