CN103672164A - Regulating valve with segmented flow characteristics - Google Patents
Regulating valve with segmented flow characteristics Download PDFInfo
- Publication number
- CN103672164A CN103672164A CN201310722678.6A CN201310722678A CN103672164A CN 103672164 A CN103672164 A CN 103672164A CN 201310722678 A CN201310722678 A CN 201310722678A CN 103672164 A CN103672164 A CN 103672164A
- Authority
- CN
- China
- Prior art keywords
- valve
- flow
- flow characteristics
- regulating valve
- spool
- 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.)
- Granted
Links
Images
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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
A regulating valve with segmented flow characteristics is of a basic structure with a single valve base, and the flow characteristics of the regulating valve are determined by the geometric line of a valve element matched with the valve base. The regulating valve is characterized in that the geometric line of the valve element is composed of two sections of curves, the first section presents an equal percent flow characteristic, and the second section presents a straight line flow characteristic. The regulating valve has the advantages that the valve has practical flow characteristic curves, and implementation of precision control of flow in a wide range is facilitated; the valve serves as a flow control element in an automatic control application system, small flow and large flow are easily and stably controlled when output, and extra-regulation is not prone to occurring, for instance, when the regulating valve is applied to a control system of an oil burning boiler, flameout is not prone to occurring in a low load, and steam pressure fluctuation is not prone to occurring in a high load.
Description
technical field:
The present invention relates to fluid control technology field, refer in particular to a kind of segmentation Flow characteristics modulating valve valve.
background technique:
Modulating valve claims again control valve, and it is in process control system, firmly to operate the device that removes to change fluid flow, for regulating the procedure parameters such as flow, pressure and liquid level of medium.Modulating valve is comprised of final controlling element and valve two-part.Final controlling element You Cheng actuator, is mainly divided into pneumatic, pure electronic, electric liquid, several driving patterns of electrohydraulic integration at present.One of major parameter of valve itself is Flow characteristics, and Flow characteristics refers under valve two ends pressure reduction keeps constant condition, and MEDIA FLOW is relation between the relative discharge of modulating valve and its aperture.The Flow characteristics of common modulating valve mainly contains two kinds of straight line, equal percentages, and these Flow characteristicss can be considered to normal flow characteristic, and generally standard adjustment valve only has a kind of normal flow characteristic.In control system, valve flow characteristic is selected whether reasonable can be to flow control, indirectly the stability of the control of physical parameters such as pressure, liquid level is had a great impact.
Because standard or conventional modulating valve only have a kind of normal flow characteristic, according to known to the analysis of every kind of Flow characteristics of valve, adopt standard adjustment valve for controlling the following problem that exists:
The valve of linear characteristic is wayward when little aperture, even vibrates; The valve of equal percentage flow characteristic is when large aperture, and power gain is large, wayward equally, easily vibrates.The flow control of some operational system or equipment, as the fuel flow constant interval of the oil-fired boiler of wide load operation can reach 6%～100%, adopt the modulating valve of single Flow characteristics cannot realize the steady mitigation control within the scope of total travel, the flame-out phenomenon of burner hearth can occur during with the underrun of linear characteristic modulating valve; And during with the high load running of equal percentage characteristics valve, be prone to Steam pressure control shakiness, the phenomenon that static error is bigger than normal.
summary of the invention:
The object of this invention is to provide a kind of segmentation Flow characteristics modulating valve valve, solve standard adjustment valve and adopt linear flow flow characteristic resolution when small flow low, highly sensitive, wayward; Adopt equal percentage flow characteristic power gain when large flow large, highly sensitive, wayward this problem.
The object of the invention is to realize as follows: a kind of segmentation Flow characteristics modulating valve valve, its basic structure is single valve seat pattern, its Flow characteristics is determined by the geometric form line of the spool matching with valve seat, it is characterized in that: spool geometric form line consists of two sections of curves, and first paragraph presents equal percentage flow characteristic; Second segment presents linear flow flow characteristic.
In 7%～35% scope of spool geometric form line separation corresponding to described two sections of Flow characteristicss boundary intersections in valve stroke.
The stroke ratio routine of described valve or the stroke of standard valve are high more than 7%.
The invention has the beneficial effects as follows: this valve has more practical rating curve, be convenient to realize the precise control of flew of wide range; In automatically controlling application system as flow control element, when small flow and large flow control output, all easily realize stable control, be difficult for overshoot, for example, while being applied in Oil Steam Boiler Control System, during low-load, be difficult for occurring to stop working, during high load, be not prone to vapor pressure fluctuation.
accompanying drawing explanation:
Fig. 1 is the Flow characteristics figure of conventional criteria modulating valve.
Fig. 2 is Flow characteristics figure of the present invention.
Fig. 3 is the spool of single valve seat plunger type and the fiting relation figure of valve seat that the present invention adopts.
Fig. 4 is the geometric form line chart that the spool of conventional criteria modulating valve is corresponding with Flow characteristics.
Fig. 5 is the geometric form line chart that spool of the present invention is corresponding with Flow characteristics.
In Fig. 1,1. linear flow flow characteristic, 2. hundred specific discharge characteristics such as grade;
In Fig. 2,1. linear flow flow characteristic, the segmentation Flow characteristics that 3. the present invention adopts.
embodiment:
With reference to accompanying drawing 1,2,3, a segmentation Flow characteristics modulating valve valve, its basic structure is single valve seat pattern, its Flow characteristics is determined by the geometric form line of the spool matching with valve seat, it is characterized in that: spool geometric form line consists of two sections of curves, and first paragraph presents equal percentage flow characteristic; Second segment presents linear flow flow characteristic.
In 7%～35% scope of spool geometric form line separation corresponding to described two sections of Flow characteristicss boundary intersections in valve stroke.
The stroke ratio routine of described valve or the stroke of standard valve are high more than 7%.
By the nonstandard design to conventional single valve seat modulating valve valve spool of valve shape line, and the stroke that adds big valve core, make it in the situation that maximum flow ability is constant, its rating curve presents different Flow characteristicss when small flow and during large flow, within the scope of total travel, all realize relatively high flow control resolution, desensitization, improve control stability.
This segmentation Flow characteristics modulating valve is realized the correlation technique feature of practical Flow characteristics:
The stroke of modulating valve valve is strengthened more than 7%;
In 7%～35% scope of stroke, get any as separation, separation down adopts equal percentage flow characteristic, and separation up adopts linear flow flow characteristic
In Fig. 4, the spool geometric form line 1 that standard adjustment valve is corresponding with linear characteristic and the spool geometric form line 2 corresponding with equal percentage characteristics.
In Fig. 5, the spool geometric form line 1 that standard adjustment valve is corresponding with linear characteristic and the spool geometric form line 3 corresponding with Flow characteristics of the present invention.
The effective length of the spool of this modulating valve will lengthen compared with standard adjustment valve, and its extension length will be more than 7%; B point in figure is the separation of two sections of Flow characteristicss, should be positioned at the interval of spool stroke 7%～35%; AB section is by equal percentage characteristics processing, and BC section is by linear characteristic processing.
Claims (3)
1. a segmentation Flow characteristics modulating valve valve, its basic structure is single valve seat pattern, its Flow characteristics is determined by the geometric form line of the spool matching with valve seat, it is characterized in that: spool geometric form line consists of two sections of curves, and first paragraph presents equal percentage flow characteristic; Second segment presents linear flow flow characteristic.
2. a kind of segmentation Flow characteristics modulating valve valve according to claim 1, is characterized in that: in 7%～35% scope of spool geometric form line separation corresponding to two sections of Flow characteristics boundary intersections in valve stroke.
3. a kind of segmentation Flow characteristics modulating valve valve according to claim 1, is characterized in that: the stroke ratio routine of valve or the stroke of standard valve are high more than 7%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310722678.6A CN103672164B (en) | 2013-12-25 | 2013-12-25 | Segmentation discharge characteristic regulation valve valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310722678.6A CN103672164B (en) | 2013-12-25 | 2013-12-25 | Segmentation discharge characteristic regulation valve valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103672164A true CN103672164A (en) | 2014-03-26 |
| CN103672164B CN103672164B (en) | 2016-08-17 |
Family
ID=50310556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310722678.6A Active CN103672164B (en) | 2013-12-25 | 2013-12-25 | Segmentation discharge characteristic regulation valve valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103672164B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091369A (en) * | 2017-05-10 | 2017-08-25 | 宁波兴茂电子科技有限公司 | A kind of pilot valve discharge characteristic test device and its application method |
| CN108591494A (en) * | 2018-04-10 | 2018-09-28 | 中国北方发动机研究所(天津) | A kind of multi-section mixing regulation valve core design method |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD158270A1 (en) * | 1981-04-21 | 1983-01-05 | Werner Bettenhaeuser | CONTROL DEVICE FOR INFLUENCING THE FLOW OF DENTAL FLUID SUBSTANCES |
| CN85100559A (en) * | 1985-04-01 | 1985-11-10 | 浙江大学 | Low pressure drop control valve |
| JPH0566374U (en) * | 1992-02-13 | 1993-09-03 | シーケーディ株式会社 | Flow control valve |
| CN2352766Y (en) * | 1998-04-03 | 1999-12-08 | 张守仁 | Valve for adjusting temp. reducing water for power plant boiler |
| JP2005114137A (en) * | 2003-10-10 | 2005-04-28 | Kayaba Ind Co Ltd | Spool valve |
| JP2006266667A (en) * | 2005-02-28 | 2006-10-05 | Daikin Ind Ltd | Expansion valve and freezing apparatus |
| CN200943608Y (en) * | 2006-06-06 | 2007-09-05 | 阎尔平 | Adjustable injection type compressor |
| CN101566235A (en) * | 2009-05-21 | 2009-10-28 | 浙江盾安人工环境设备股份有限公司 | Valve core of thermostatic expansion valve and the thermostatic expansion valve |
| CN201475368U (en) * | 2009-07-30 | 2010-05-19 | 朱孝有 | Strong sealing bellows anti-corrosion regulating valve |
| CN102364183A (en) * | 2011-11-24 | 2012-02-29 | 四川华林自控科技有限公司 | Energy-saving full-function regulating valve |
| US20120074346A1 (en) * | 2010-07-02 | 2012-03-29 | Enfield Technologies, Llc | Corrective measures and devices for bi-stable flow phenomena in fluid valves |
| CN202545864U (en) * | 2012-03-30 | 2012-11-21 | 中国船舶重工集团公司第七0四研究所 | Large-adjustable ratio high-pressure difference steam adjusting valve |
| CN203163367U (en) * | 2013-01-28 | 2013-08-28 | 珠海格力电器股份有限公司 | Electronic expansion valve and refrigerating device with same |
| CN203614910U (en) * | 2013-12-25 | 2014-05-28 | 中国船舶重工集团公司第七�三研究所 | Segmented flow characteristic adjustment valve |
-
2013
- 2013-12-25 CN CN201310722678.6A patent/CN103672164B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD158270A1 (en) * | 1981-04-21 | 1983-01-05 | Werner Bettenhaeuser | CONTROL DEVICE FOR INFLUENCING THE FLOW OF DENTAL FLUID SUBSTANCES |
| CN85100559A (en) * | 1985-04-01 | 1985-11-10 | 浙江大学 | Low pressure drop control valve |
| JPH0566374U (en) * | 1992-02-13 | 1993-09-03 | シーケーディ株式会社 | Flow control valve |
| CN2352766Y (en) * | 1998-04-03 | 1999-12-08 | 张守仁 | Valve for adjusting temp. reducing water for power plant boiler |
| JP2005114137A (en) * | 2003-10-10 | 2005-04-28 | Kayaba Ind Co Ltd | Spool valve |
| JP2006266667A (en) * | 2005-02-28 | 2006-10-05 | Daikin Ind Ltd | Expansion valve and freezing apparatus |
| CN200943608Y (en) * | 2006-06-06 | 2007-09-05 | 阎尔平 | Adjustable injection type compressor |
| CN101566235A (en) * | 2009-05-21 | 2009-10-28 | 浙江盾安人工环境设备股份有限公司 | Valve core of thermostatic expansion valve and the thermostatic expansion valve |
| CN201475368U (en) * | 2009-07-30 | 2010-05-19 | 朱孝有 | Strong sealing bellows anti-corrosion regulating valve |
| US20120074346A1 (en) * | 2010-07-02 | 2012-03-29 | Enfield Technologies, Llc | Corrective measures and devices for bi-stable flow phenomena in fluid valves |
| CN102364183A (en) * | 2011-11-24 | 2012-02-29 | 四川华林自控科技有限公司 | Energy-saving full-function regulating valve |
| CN202545864U (en) * | 2012-03-30 | 2012-11-21 | 中国船舶重工集团公司第七0四研究所 | Large-adjustable ratio high-pressure difference steam adjusting valve |
| CN203163367U (en) * | 2013-01-28 | 2013-08-28 | 珠海格力电器股份有限公司 | Electronic expansion valve and refrigerating device with same |
| CN203614910U (en) * | 2013-12-25 | 2014-05-28 | 中国船舶重工集团公司第七�三研究所 | Segmented flow characteristic adjustment valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091369A (en) * | 2017-05-10 | 2017-08-25 | 宁波兴茂电子科技有限公司 | A kind of pilot valve discharge characteristic test device and its application method |
| CN107091369B (en) * | 2017-05-10 | 2023-06-30 | 宁波兴茂电子科技有限公司 | Pilot valve flow characteristic testing device and application method thereof |
| CN108591494A (en) * | 2018-04-10 | 2018-09-28 | 中国北方发动机研究所(天津) | A kind of multi-section mixing regulation valve core design method |
| CN108591494B (en) * | 2018-04-10 | 2020-04-10 | 中国北方发动机研究所(天津) | Method for designing valve core of multi-section mixed regulating valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103672164B (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101655165B (en) | Novel three-way pressure reducing valve | |
| CN103511377A (en) | One-way proportional flow valve | |
| CN103672164A (en) | Regulating valve with segmented flow characteristics | |
| CN204099146U (en) | Hydraulic variable displacement pump | |
| CN202971383U (en) | Proportional overflow valve with position feedback | |
| CN203614910U (en) | Segmented flow characteristic adjustment valve | |
| CN103291986A (en) | Directly-operated type reducing valve | |
| CN201513402U (en) | Pilot-operated type proportional relief valve | |
| CN104420924A (en) | Continuously-adjustable adjustment method and device for valve lift of engine | |
| CN201269329Y (en) | Three-way pressure reducing valve | |
| CN103527542A (en) | Variable pump hydraulic circuit and engineering machine | |
| CN202510814U (en) | Stacked proportional electromagnetic flow valve | |
| CN202327279U (en) | Self-operated pressure regulating valve | |
| CN203796643U (en) | Adjustable throttling hydraulic lock of coal mining machine | |
| CN102913501B (en) | A kind of direct-acting type proportional overflow valve | |
| CN205349902U (en) | One -way balanced valve | |
| CN104265704A (en) | Lifting machine backpressure regulating loop | |
| CN108252973B (en) | Plug-in type direct-acting proportional pressure reducing valve | |
| CN102536966A (en) | Hydraulic system for adjusting work pressure | |
| CN203050902U (en) | Flow control valve used for diesel engine | |
| CN203476868U (en) | Novel control oil passage structure for hydraulic pump | |
| CN204827886U (en) | Automatically controlled regulator is used to plunger pump | |
| CN204961943U (en) | Piston water hammer relief valve | |
| CN204784807U (en) | Regulating valve | |
| CN210599363U (en) | Remote controller with valve core limiting function for plunger pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200527 Address after: 150000 Honghu Road, Yingbin Road Concentrated Area, Harbin Hi-tech Industrial Development Zone, Harbin, Heilongjiang Province Patentee after: Harbin Guanghan Power Industry Development Co., Ltd Address before: 150000 Honghu Road, Daoli District, Heilongjiang, No. 35, Harbin Patentee before: NO.703 RESEARCH INSTITUTE OF CHINA SHIPBUILDING INDUSTRY Corp. |