CN1147068A - Eccentric valve - Google Patents
Eccentric valve Download PDFInfo
- Publication number
- CN1147068A CN1147068A CN 95117613 CN95117613A CN1147068A CN 1147068 A CN1147068 A CN 1147068A CN 95117613 CN95117613 CN 95117613 CN 95117613 A CN95117613 A CN 95117613A CN 1147068 A CN1147068 A CN 1147068A
- Authority
- CN
- China
- Prior art keywords
- valve
- spool
- shaft axis
- shaft
- valve core
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 abstract description 3
- 239000004033 plastic Substances 0.000 abstract description 3
- 229920003023 plastic Polymers 0.000 abstract description 3
- 239000010935 stainless steel Substances 0.000 abstract description 3
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 3
- 239000005060 rubber Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 241001417527 Pempheridae Species 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 238000010923 batch production Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000002955 isolation Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000003034 coal gas Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000005619 thermoelectricity Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- -1 heat supply Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Sliding Valves (AREA)
Abstract
A pipeline valve with eccentric opening and closing shaft and medium channel on valve core is disclosed. The sealing ring made of rubber or plastics can be used to make valves for running water, heating and air supply pipelines. The valve used on medium and large-sized pipelines with high temperature, high pressure, ultralow temperature, radioactivity, corrosiveness and the like can also be manufactured by using the sealing ring made of materials such as hard alloy, engineering ceramics, stainless steel and the like. Can pass through the isolation ball and the tube sweeper. The valve can replace various gate valves, the service life of the valve opening of the valve can exceed the service life of the gate valve by dozens of times, the volume of the valve opening is one time smaller than that of the gate valve, the manufacturability is good, and the valve opening device is suitable for batch production.
Description
The invention belongs to pipeline valve.Pipeline valve relates to human being's production, various fields of recent life, on pipe networks such as modern city feedwater, draining, heat supply, coal gas; In oil, rock gas, coal and ore extraction, refinement and line transportation; In steel-making, chemical industry, medicine, foods producing system; In electric power generation system such as thermoelectricity, nuclear power, water power; On various movable machineries such as space flight, aviation, navigation, motor vehicle, all use a large amount of valves.Large thermal power plant, nuclear power station or a large chemical plant all have up to ten thousand valves controlling production lifeblood.Wherein be used to do the gate valve of using of main valve or pipeline stage casing valve more.
Characteristics such as gate valve has suitable large-diameter pipeline, and the valve resistance is less.But its volume is tall and big, valve rod and flashboard connecting link weakness, the more complicated cost height of manufacturing process.Topmost shortcoming is: 1, since gate valve in opening-closing process, the distance of sliding friction is very long between flashboard sealing surface and the valve body sealing surface, opens and closes under the effect by its high temperature at medium, high pressure, sealing surface very easily abrades, and causes internal leakage.2, the linear distance of sliding friction is very long between opening-closing process valve rod and Sealing or the stuffing box packing, and axial to-and-fro motion is arranged, and circumferential to-and-fro motion is also arranged, so sealing configuration is very easily destroyed, causes the external leakage of valve stem.For above-mentioned reasons, the keying life-span of gate valve is very short, generally is 1/5th to 1/10th of other valve opening and closing life-span.
The objective of the invention is to create a kind of novel valve, it will have all advantages of gate valve, is fit to do main valve and stage casing valve.Opening and closing the life-span will big leap ahead.Target is to replace short various gate valves of life-span.
The present invention is made of valve body, valve seal ring, spool, valve rod, metal (upper, valve gap, bottom, stuffing box packing, gland, seal ring and drive unit etc., with ball valve a lot of approximate and something in common is arranged.Different mainly be that the medial axis of the medial axis of last lower shaft of spool and valve core sealed cover is non-intersect, a throw of eccentric is arranged; The medial axis of valve body bearing and valve gap bearing and the medial axis of valve body sealing surface are also non-intersect, and the throw of eccentric same with poppet shaft arranged.Medium channel is arranged on the spool, and identical with the latus rectum of pipeline, consistent with duct orientation during unlatching, valve rod and spool can be one, also can be splits.Valve core sealed cover is sphere, garden cylinder or ring-type.Valve body sealing surface is inner conical surface or inner ball surface, and cooperating with the garden cylinder should be cambered surface.The sealing surface of valve body and spool can directly process on valve body or spool.For easy to maintenance and improve that high temperature resistant, high pressure resistant, corrosion-resistant, the anti-width of cloth of valve is penetrated, anti abrasive performance or improve sealing effect can welding or the seal ring made of other material such as tungsten carbide button, engineering ceramics, stainless steel or rubber, plastics etc.Drive unit is the same with ball valve can be with removing handle, handwheel, and big-and-middle-sized valve can be used worm gear, worm mechanism; Leading screw, linkage mechanism; Gear mechanisms etc., self-acting valve can be used actuating motor, liquid gas pressure device etc.
Because there is a throw of eccentric valve core sealed cover of the present invention medial axis with the medial axis of lower shaft on it is non-intersect, when rotation valve rod was opened, revolving round the sun in the medial axis that valve core sealed cover has both centered on last lower shaft, does rotation again.90 ° of spool rotations, make passage consistent with duct orientation---the process of unlatching, valve core sealed cover separates with valve body sealing surface, closing closed procedure also is to carry out under the state that separates, so do not have sliding friction between two sealing surfaces substantially, to being the working life of improving two sealing surfaces extremely favourable.
The present invention opens or closes only needs valve rod to change 90 °, and gate valve need change tens 360 °, that is to say the friction linear distance of each friction particle of valve rod and its Sealing, the present invention is 1/40th of a gate valve, can think that will be more than 40 times of gate valve working life.
The present invention takes and the suitable form of closing of media flow direction, thus help spool centering, and the good more characteristics of the big more sealing effect of pressure are arranged.
The pressure medium that opening-closing process spool of the present invention is subjected to is born by bearing; The throw of eccentric of spool is very little, generally has only 1-15 millimeters, so open and close torque is very little, is fit to do the valve that uses on high pressure and the middle large-diameter pipe road.
The present invention can and sweep Guan Mo by batching sphere.
In the process of opening and closing of the present invention, all there is homogeneous media ground to flow through on the whole valve core sealed cover, so be difficult for producing cavitation phenomenon.
Description of drawings;
1, lower shaft axle center 9, valve core sealed cover shaft axis 10, pipeline shaft axis on valve body 2, valve seal ring 3, valve core sealed cover 4, valve gap 5, bearing 6, keying drive unit 7, valve core channel 8, the spool
Fig. 1; Basic structure Fig. 2 of the present invention: the present invention is at opening state (plan view) Fig. 3: the present invention is closing the clear plan view of shape)
Use the present invention manufacture valve that pipe networks such as tap water, heat supply, coal gas use can with plastics such as nylon, teflon, polyamine fat with die forming make seal ring (2), (3) are embedded on valve body or the spool, reduce production costs when helping producing in batches, guarantee constant product quality, it is convenient to change when also helping keeping in repair.
Use the present invention manufacture usefulness such as thermoelectricity plant, nuclear power station, chemical plant, carrier rocket high temperature, high pressure, impact load is arranged, severe corrosive is arranged, the valve that uses on hot and the ultralow temperature pipeline is arranged, can inlay or seal ring (2) that soldering stainless steel, cemented carbide, engineering ceramics etc. are made, (3) to guaranteeing that pipeline operation steady in a long-term is favourable the working life of improving valve.
(8) size of throw of eccentric is decided by the hardness of accuracy of manufacturing and sealing surface material and between (9), and the material hardness of sealing surface is high more, and the high more throw of eccentric of accuracy of manufacturing just can be more littler.
Claims (7)
1, in the existing pipeline valve, on the spool of ball valve medium channel is arranged, but the shaft axis of valve core sealed cover intersects vertically with the shaft axis that opens and closes rotating shaft; The shaft axis of rotary valve valve core sealed cover and its keying running shaft shaft axis are non-intersect, very big throw of eccentric is arranged, but do not have medium channel on its spool.
Feature of the present invention is: medium channel is arranged on the spool, and the shaft axis of valve core sealed cover is non-intersect with the shaft axis that opens and closes rotating shaft, and a very little throw of eccentric is arranged.The shaft axis of valve body sealing surface and the shaft axis of metal (upper are also non-intersect, and the throw of eccentric same with poppet shaft arranged.
2, the described valve body sealing surface of the present invention of claim (1) can be inner conical surface, inner ball surface or intrados.
3, the described valve body sealing surface of claim (2) can process on valve body straight, also can weld or inlay the seal ring that other material is made on valve body.
4, the described valve core sealed cover of the present invention of claim (1) can be sphere or anchor ring, cooperates with the garden cambered surface to should be the garden cylinder.
5, the described valve core sealed cover of claim (4) can process on spool straight, also can weld or inlay the seal ring that other material is made on spool.
6, the medium channel on the described spool of the present invention of claim (1), and shaft axis by valve core shaft vertical with the shaft axis of valve core shaft.
7, the described spool of the present invention of claim (1), it and valve rod can be one, also can be splits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95117613 CN1147068A (en) | 1995-10-03 | 1995-10-03 | Eccentric valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95117613 CN1147068A (en) | 1995-10-03 | 1995-10-03 | Eccentric valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1147068A true CN1147068A (en) | 1997-04-09 |
Family
ID=5081311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95117613 Pending CN1147068A (en) | 1995-10-03 | 1995-10-03 | Eccentric valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1147068A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874926A (en) * | 2015-06-04 | 2015-09-02 | 肖叶 | Automatic opening and closing air inlet of semiconductor laser marking machine |
| CN108289410A (en) * | 2015-09-28 | 2018-07-17 | 精密种植有限责任公司 | System for controlling and monitoring farmland liquid application and device |
-
1995
- 1995-10-03 CN CN 95117613 patent/CN1147068A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874926A (en) * | 2015-06-04 | 2015-09-02 | 肖叶 | Automatic opening and closing air inlet of semiconductor laser marking machine |
| CN108289410A (en) * | 2015-09-28 | 2018-07-17 | 精密种植有限责任公司 | System for controlling and monitoring farmland liquid application and device |
| CN108289410B (en) * | 2015-09-28 | 2021-09-14 | 精密种植有限责任公司 | System and apparatus for controlling and monitoring liquid application to agricultural fields |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |