CN103174839A - Stop valve with valve sleeve capable of reducing cavitation damage - Google Patents
Stop valve with valve sleeve capable of reducing cavitation damage Download PDFInfo
- Publication number
- CN103174839A CN103174839A CN2013101014469A CN201310101446A CN103174839A CN 103174839 A CN103174839 A CN 103174839A CN 2013101014469 A CN2013101014469 A CN 2013101014469A CN 201310101446 A CN201310101446 A CN 201310101446A CN 103174839 A CN103174839 A CN 103174839A
- Authority
- CN
- China
- Prior art keywords
- valve
- straight trough
- circular arc
- spool
- stop
- 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
- 230000006378 damage Effects 0.000 title claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 210000003141 lower extremity Anatomy 0.000 claims description 6
- 230000000295 complement effect Effects 0.000 claims description 3
- 230000007306 turnover Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract 1
- 230000006837 decompression Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000003628 erosive effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Images
Landscapes
- Details Of Valves (AREA)
- Sliding Valves (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a stop valve with a valve sleeve capable of reducing cavitation damage. The stop valve comprises a drive mechanism, a valve rod, a support, a valve cover, a valve body, a valve core, a dowel and flanges welded at two ends of an in-out valve opening. A drive mechanism rotating shaft drives the valve core and the valve sleeve arranged inside the valve cover and the valve body to move vertically. The valve sleeve is connected with the valve core through the dowel. The valve sleeve is coaxially arranged on the bottom of the valve core. An inner circle and an outer circle of the valve sleeve are respectively provided with a group of straight channels, wherein the straight channels are identical in size and mutually staggered. Inner straight channels and outer straight channels are communicated through internal arc cavities. A coaxial cylindrical groove matched with the valve sleeve is arranged in the inner cavity bottom, matched with the valve core, of the valve body. According to the stop valve, in the process of closing and opening the valve, the valve core is driven by the valve rod to move vertically to achieve the opening and closing function. When opening degree is small, the straight channels act on the outlet end of the valve, fluid passes through the straight channels, and therefore the functions of separating the fluid and reducing pressure are achieved, pressure drop before and after the stop valve can be lowered, and valve cavitation phenomena can be reduced. The stop valve can meet requirements of the fields such as petroleum, chemical industries and water conservancy.
Description
Technical field
The present invention relates to a kind of stop valve, especially relate to a kind of stop valve that reduces the cavitation damage valve pocket that has.
Background technique
In petrochemical industry, oil and energy industry, stop valve is one of fluid control elements of extensive use the most, and be applied to element in this particular surroundings, must have corresponding survivability avoids fluid that corrosion and the temporary impact of sealing surface are destroyed, in engineering reality, the seal form of a kind of " hard sealing " commonly used, be metal-on-metal and contact to reach sealing effect.In actual applications, often because causing the valve seal position, valve opening or the liquid flow impact when closed very easily damage.Therefore, the Rational structure of research stop valve body internal flow mechanism and sealed member is to reduce fluid in the energy loss of stop valve runner inside with to the erosion damage at seal spool position, efficient and the life-span of improving stop valve
There are some shortcomings in existing stop valve sealing position; for example: because the flowing medium that uses is different; it is mainly for delivery of height corrosion liquid medium at a high speed; can produce cavitation phenomenon in course of conveying; to seal spool secondary position causing certain erosion attack; thereby affect the performance and used life of valve, therefore, can effectively reduce cavitation phenomenon and protect the stop valve of spool just to be of great practical significance for development is a kind of.
Summary of the invention
In order to overcome the deficiency of stop valve in background technique, the object of the present invention is to provide a kind of stop valve that reduces the cavitation damage valve pocket that has, thereby play reduction valve cavitation to a certain extent, noise decrease improves the valve effect in working life.
The technical solution used in the present invention is:
The present invention includes driving mechanism, valve rod, support, valve gap, valve body, spool, pin and the flange that is welded on turnover valve port two ends; The driving mechanism rotating shaft drives through valve rod the spool and the valve pocket that are arranged in valve gap and valve body and moves up and down, and valve pocket is connected with spool by pin; The spool bottom is coaxially installed with valve pocket, and the inside and outside circle of valve pocket has one group of measure-alike interlaced straight trough, and interior straight trough and outer straight trough connect by inner circular arc cavity; Valve body has with the intracavity bottom that spool is complementary the coaxial cylinder groove that matches with valve pocket.
Described straight trough is the circular arc straight trough, central angle is 6-8 °, adjacent interior straight trough and adjacent outer straight trough interval 6-8 °, the straight trough height is 0.6D, circular arc straight trough lower limb is apart from valve pocket lower limb 2mm, the circular arc housing depth is 0.6D, and circular arc cavity edge and circular arc straight trough lower edge are in same level, and D is inlet channel diameter in valve body.
The beneficial effect that the present invention has is:
The present invention has the function of stop valve, and in closing, opening valve, spool moves up and down and plays the keying effect by the drive of valve rod.In addition, during little aperture, straight trough acts on the valve export end, and fluid plays the shunting decompression effect through straight trough, falls little stop valve front and back pressure drop, reduces the valve cavitation phenomenon.
The present invention can satisfy the demand in the fields such as oil, chemical industry and water conservancy.
Description of drawings
Fig. 1 is the structural representation of stop valve.
Fig. 2 is valve pocket one side three-dimensional structure schematic diagram.
Fig. 3 is valve pocket opposite side three-dimensional structure schematic diagram.
Fig. 4 is the A-A cross-sectional schematic of Fig. 1 valve pocket.
In figure: 1, driving mechanism, 2, valve rod, 3, support, 4, valve gap, 5, valve body, 6, spool, 7, pin, 8, valve pocket, 9, welded flange, 10, outer straight trough, 11, interior straight trough
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, comprise driving mechanism 1, valve rod 2, support 3, valve gap 4, valve body, spool 6, pin 7 and the flange 9 that is welded on turnover valve port two ends; Driving mechanism 1 rotating shaft drives through valve rod 2 spool and the valve pocket that are arranged in valve gap and valve body and moves up and down, and valve pocket is connected with spool by pin; The spool bottom is coaxially installed with valve pocket, and valve pocket is connected by pin 7 with spool, and the inside and outside circle of valve pocket has one group of measure-alike interlaced straight trough, and interior straight trough and outer straight trough connect by inner circular arc cavity; Valve body has with the intracavity bottom that spool is complementary the coaxial cylinder groove that matches with valve pocket.
Described straight trough is the circular arc straight trough, central angle is 6-8 °, adjacent interior straight trough and adjacent outer straight trough interval 6-8 °, the straight trough height is 0.6D, circular arc straight trough lower limb is apart from valve pocket lower limb 2mm, the circular arc housing depth is 0.6D, and circular arc cavity edge and circular arc straight trough lower edge are in same level, and D is inlet channel diameter in valve body.
The present invention is intended to by some shortcomings in conjunction with shunting decompression and anti-cavitation erosion principle and the modern valve of rigid seal structure solution.Take full advantage of shock resistance destruction and the rigid seal reliability of structure energy of shunting decompression structure, developed novel have decompression shunting valve pocket stop valve, shock resistance damage capability and the noise of stop valve have been improved, increase simultaneously the life-span of stop valve, adapted to multiple special flow body medium to the demand of stop valve performance.
Working principle of the present invention is:
Gradually in opening process, medium is by before valve when valve, and fluid, can due to the cross structure of straight trough, reduce rate of flow of fluid and pressure, thereby play the shunting decompression effect when the circular arc cavity is flowed through outer straight trough more first by interior straight trough.Can replace reduction valve to a certain extent, and reduce the generation of valve cavitation, thereby increase the working life of valve, due to the noise of valve greatly because cavitation causes, so the present invention's noise decrease to a certain extent.
The present invention is intended to solve by the shunting decompression principle some shortcomings of modern valve.Take full advantage of the shunting decompression principle of straight trough, developed novel stop valve with the valve pocket that reduces cavitation damage.Researched and developed corresponding new type of valve nested structure, improved stop valve valve working life and improved the sealing reliability of stop valve, reduced to a certain extent the noise of stop valve, and adapted to multiple special flow body medium to the demand of stop valve performance.
Claims (2)
1. one kind has the stop valve that reduces the cavitation damage valve pocket, comprises driving mechanism, valve rod, support, valve gap, valve body, spool, pin and the flange that is welded on turnover valve port two ends; The driving mechanism rotating shaft drives through valve rod the spool and the valve pocket that are arranged in valve gap and valve body and moves up and down, and valve pocket is connected with spool by pin; It is characterized in that: be coaxially installed with valve pocket bottom spool, the inside and outside circle of valve pocket has one group of measure-alike interlaced straight trough, and interior straight trough and outer straight trough connect by inner circular arc cavity; Valve body has with the intracavity bottom that spool is complementary the coaxial cylinder groove that matches with valve pocket.
2. a kind of stop valve that reduces the cavitation damage valve pocket that has according to claim 1, it is characterized in that: described straight trough is the circular arc straight trough, central angle is 6-8 °, adjacent interior straight trough and adjacent outer straight trough interval 6-8 °, the straight trough height is 0.6D, and circular arc straight trough lower limb is apart from valve pocket lower limb 2mm, and the circular arc housing depth is 0.6D, circular arc cavity edge and circular arc straight trough lower edge are in same level, and D is inlet channel diameter in valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101014469A CN103174839A (en) | 2013-03-27 | 2013-03-27 | Stop valve with valve sleeve capable of reducing cavitation damage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101014469A CN103174839A (en) | 2013-03-27 | 2013-03-27 | Stop valve with valve sleeve capable of reducing cavitation damage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103174839A true CN103174839A (en) | 2013-06-26 |
Family
ID=48634900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101014469A Pending CN103174839A (en) | 2013-03-27 | 2013-03-27 | Stop valve with valve sleeve capable of reducing cavitation damage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103174839A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335146A (en) * | 2013-06-27 | 2013-10-02 | 南通旭阳机械制造有限公司 | Novel stop valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2526612Y (en) * | 2002-02-05 | 2002-12-18 | 陆亚安 | Minimum flow controlling valve for water pump of boiler |
| CN101832396A (en) * | 2010-05-17 | 2010-09-15 | 哈尔滨工程大学 | Low-vibration noise valve |
| US20120199771A1 (en) * | 2009-10-30 | 2012-08-09 | Eagle Industry Co., Ltd. | Solenoid valve |
| CN203131044U (en) * | 2013-03-27 | 2013-08-14 | 浙江理工大学 | Shutoff valve with valve sleeve capable of reducing cavitation damage |
-
2013
- 2013-03-27 CN CN2013101014469A patent/CN103174839A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2526612Y (en) * | 2002-02-05 | 2002-12-18 | 陆亚安 | Minimum flow controlling valve for water pump of boiler |
| US20120199771A1 (en) * | 2009-10-30 | 2012-08-09 | Eagle Industry Co., Ltd. | Solenoid valve |
| CN101832396A (en) * | 2010-05-17 | 2010-09-15 | 哈尔滨工程大学 | Low-vibration noise valve |
| CN203131044U (en) * | 2013-03-27 | 2013-08-14 | 浙江理工大学 | Shutoff valve with valve sleeve capable of reducing cavitation damage |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335146A (en) * | 2013-06-27 | 2013-10-02 | 南通旭阳机械制造有限公司 | Novel stop valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203335872U (en) | Secondary sealing stop valve | |
| CN105257855A (en) | High-parameter multistage pressure reducing valve with porous valve core | |
| CN204187101U (en) | High stability piston flow-adjustable valve | |
| CN102943886B (en) | Gate valve with function of reducing cavitation damage of valve plate | |
| CN204476357U (en) | Anti-erosion device for fracturing wellhead | |
| CN106593852B (en) | A kind of three hydraulic fluid port Properties of Port Plate in Axial Piston Pump structures | |
| CN204533620U (en) | black water regulating valve | |
| CN104197031B (en) | The multi-functional butterfly plate improved based on electric planer formula axle construction and the butterfly valve of composition thereof | |
| CN203131044U (en) | Shutoff valve with valve sleeve capable of reducing cavitation damage | |
| CN103174839A (en) | Stop valve with valve sleeve capable of reducing cavitation damage | |
| CN102094979B (en) | Integrated water hydraulic distributing valve | |
| CN203131087U (en) | Multifunctional plug valve | |
| CN205026127U (en) | Sealed section of thick bamboo valve that revolves | |
| CN201934704U (en) | Coal inlet block valve | |
| CN204592366U (en) | Angle stroke angle valve | |
| CN204900910U (en) | Novel plug valve | |
| CN103195941B (en) | Multifunctional cock valve | |
| CN202946705U (en) | Gate valve with valve plate capable of reducing cavitation damage | |
| CN209354701U (en) | check valve | |
| CN203272894U (en) | Swing check valve | |
| CN105782526A (en) | Water pressure overflow valve | |
| CN204213368U (en) | A kind of based on the multi-functional butterfly plate of electric planer formula axle construction improvement and the butterfly valve of formation thereof | |
| CN107237794B (en) | A kind of concreting machinery pumping machine tilt cylinder | |
| CN202418599U (en) | Pressure balancing check valve | |
| CN104390019A (en) | Stop valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130626 |