CN202165699U - Orifice plate type adjustable throttle valve - Google Patents
Orifice plate type adjustable throttle valve Download PDFInfo
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- CN202165699U CN202165699U CN2011201392384U CN201120139238U CN202165699U CN 202165699 U CN202165699 U CN 202165699U CN 2011201392384 U CN2011201392384 U CN 2011201392384U CN 201120139238 U CN201120139238 U CN 201120139238U CN 202165699 U CN202165699 U CN 202165699U
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- valve
- throttle valve
- orifice plate
- plate type
- type adjustable
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Abstract
The utility model discloses an orifice plate type adjustable throttle valve which comprises a valve body, a valve cover, a valve rod and valve plates, wherein more than one through hole 26 is axially arranged on either disc type valve plate 4, therefore, under the circumference of having identical flow quantity, the overflow quantity of gas compositions in a pipeline is increased, and phenomena of dead angle accumulation of sand and stones at the inlet of the orifice plate of the valve as well as cavitation erosion of gas are reduced; and most importantly, the outlet of the multi-hole orifice plate is in a high-pressure ejecting intersection zone, and multiphase fluid forms a hedging energy consumption depressurization zone, so that the inner kinetic energy of high-speed fluid and the scour of high-speed fluid to the pipe wall are reduced, and the service life of the throttle valve is greatly prolonged. Compared with throttling and depressurization pipelines of the same grade, by adopting the orifice plate type adjustable throttle valve, the throttling levels of the pipeline can be reduced, and the operation cost of enterprises is reduced. The orifice plate type adjustable throttle valve can be applied to multiphase mixed fluid conveying pipelines in the fields and industries of metallurgy, mines, infrastructure construction, sewage treatment, port shipping and the like.
Description
Technical field
the utility model relates to petrochemical field, particularly a kind of orifice-plate type adjustable restrictive valve.
Background technique
throttle valve is widely used in the industry-by-industry of petrochemical field; Along with the day by day expansion of country for energy demand, the demand that is used for throttle valve every year also increases thereupon, how to improve product structure, improves the quality of products; Prolong its working life; Reducing production costs, enlarge the using scope of product, is the new problem that the throttle valve production industry is faced.
high temperature, high pressure, high corrosion are the distinctive working environments of petrochemical field; The usability of throttle valve and quality are directly connected to the industry-by-industry downstream product quality of petrochemical field, existence and even the social environment and the personal safety of enterprise.
Working principle:
orifice-plate type throttle valve is that the pipeline that petrochemical field is comparatively commonly used in the last few years opens and closes apparatus, and it is decreased the molded two boards valve that forms of special tungsten carbide material of ability by the tool anti-impact.Through rotation, change the concentricity between the hole and following hole on two orifice plates, thereby realize the adjusting of liquid or gas flow one of them orifice plate.Its characteristics are when it is closed, and the pressure difference between the inlet/outlet can make two orifice plates force together tightly, realize the function that sealing is cut off.Especially running into the unexpected rising of pressure, or the pressure that causes because of leakage reduces suddenly etc. under the situation of urgent burst time, can make it close automatically and cut off through the high and low pressure cell pressure signal value that is provided with in advance.Then can avoid the generation of substantial risk accident thus.With other various throttle valve by contrast, it has long service life, anti-impact undermines the strong characteristics of wearing and tearing ability (seeing Fig. 1-1～Fig. 1-4).
Failure mechanism:
because mostly there is heterogeneous mixing phenomena in input, the output pipe of petrochemical industry, and for example in the gas well of oil, the oil well pipeline, gas, oil, vapour, water, sand is heterogeneous all has; Its ratio and composition also all are dynamic-form, are-20～250 ℉ in ambient temperature, when force value is 3000～15000PSI; When throttle valve opened and closed, because flow, pressure, temperature generation rapid change in the pipeline, the water molecule in the liquid state can produce vaporization and cohesion; The flow channel material surface forms metal fatigue and cavitation phenomenons and causes serious noise under the surge pressure effect, and pipe vibration is big; On the atomic little area of water passage surface, the high pressure that impact force forms, its frequency can reach per second several ten thousand times; Just possibly cause the badly damaged of wash surface at short notice, it shows as wash surface and can produce thick poor.By the hydrogen of overflowing in the liquid, oxygen, hydrogen sulfide isoreactivity gas, the thermal effect when condensing by steam bubble then can play the chemical corrosion effect to metal.
]?
Throttle valve is not difficult to find out in work is used in sum in
, receives metathesis reaction and the surface chemistry corrosion that brings of oxidation reaction, metal displacement reaction, the soda acid salt of environment; Inner high frequency stress and fatigue corrosion; Finally cause the generation of the hydrogen embrittlement fracture phenomenon in crack between the metallic molecule lattice.
in addition; Throttle valve is under the freezing point working state, since the expansion factor of ice body molecular lattice, the erosion corrosion of hard sandstone in the pipeline; The integral body cracking of throttling valve member is quickened in the capital, this just throttle valve receive reason for corrosion more easily than pipeline.
Fluid analysis:
are different from the throttle valve of single-phase medium; The throttle valve that is used for petrochemical industry exists gas, oil, vapour, water, the heterogeneous mixing of sand, and its ratio and component also all be dynamic-form, because proportion is different; Each component in the pipeline demonstrates laminar flow; The upper strata is a gas phase, and the centre is the liquid phase turbulence state, and lower floor is a solid phase.When in case valve plate opens and closes; The phase transformation of water molecule in rapid change that flow, pressure, temperature produce in the pipeline and the liquid state; Originally the laminar flow in the pipeline is rendered as turbulent flow (turbulent flow) state, in the throttle valve cavity, produces high frequency mixed and tube wall scouring effect between each component, and Fig. 2 is single-phase medium on-way resistance coefficient lambda, tube wall roughness ε/d, reynolds number Re response curve figure in the pipe; It is thus clear that wherein resistance coefficient λ and roughness ε are direct ratio; For multiphase medium, each phase component is many more in its pipe equally, and roughness ε and resistance coefficient λ are also just big more.
traditional orifice-plate type throttle valve is to be design object with single-phase medium; In petrochemical industry gas, oil, vapour, water, the heterogeneous mixed medium of sand and its ratio and component is dynamic Environmental Conditions; The throttle valve noise is big, and working life is short, poor stability.
Fig. 3, Fig. 4 are the board-like throttle valve user mode of conventional holes structural representations; Because the great BOP that is deposited on of sand coarse aggregate ratio; Water, oil, gas are then swum respectively and are floated at the middle and upper levels; Be easy to generate the dead angle accumulation of sandstone and the hole cavitation phenomenons of gas in throttle valve orifice plate ingress and take place, the high-pressure mixing fluid in the outlet port of throttle valve orifice plate then can form a fan-shaped district of washing away to tube wall.
Summary of the invention
The drawback that
exist to above-mentioned traditional orifice-plate type throttle valve; The utility model is according to working principle, failure mechanism and the fluid analysis of orifice-plate type throttle valve; Employing liquidate the power consumption step-down design concept; Be intended to propose a kind of being applicable under high temperature, high pressure, the high corrosive environment, the petrochemical industry orifice-plate type throttle valve of high security.
The utility model is that the technological scheme that its technical problem of solution is adopted is: a kind of orifice-plate type adjustable restrictive valve; Comprise valve body, valve gap, valve rod; Described valve body 6 is a T font three-port structure body; The left side of the T font outerplanar that portals connects the two flanges 1 of an outlet, and the two is fastenedly connected with stud bolt 17 and nut 16, connects the place, plane by gasket ring 24 sealings;
The inner radius of portalling in the left side is provided with a counterbore step; Be provided with two valve seats 3 in the interior outside of step; Be provided with the valve plate 4 in two same axle center 3 of two valve seats; Two valve plates 4 are the disc type plane and connect, but concentric displacement each other, the axial through hole 26 that respectively is provided with at least one on two disc type valve plates 4;
The inner radius of portalling on right side hole countersunk connects a mesopore valve gap 9; The two is by seal ring 11 sealings; Be fastenedly connected with stud bolt 17 and nut 16; Be provided with the built-in thrust-bearing 14 of hole countersunk bearing support at valve gap 9 another axial places of portalling, 14 of valve gap 9 and thrust-bearings are by gasket seal 13 and 12 sealings of U type packing, and valve gap 9 ports are by sealing gland 15 sealings; The single flange arrangement of Kong Weiyi is advanced in the bottom side of T font;
Described valve rod 10 portals and valve gap 9 through about valve body 6T font; Its front end connects shift fork 5 and reinforces with wavy spring 7 forms; The stage casing is provided with thrust-bearing 14 and worm gear 20 steps; Worm gear 20 is by flat key form pin joint, and tail end and valve rod 10 packings 25 are fastening by bolt 29, at packing 25 and 29 on bolt a scale pointer 28 is arranged;
Described shift fork 5 and valve plate 4, valve plate 4 and valve seat 3 are all with the movable pin joint of bolt;
described valve rod 10 packings 25 are that three lip types are connected the worm gear 20 orthogonal thereto couplings of pin joint on operation assembly 22 central worm and the valve rod 10 with operation assembly 22 shaped as frames.
Two flanges 1 that the outerplanar that portals on the left of
described T font connects, its internal diameter has nesting type cemented carbide erosion control cover 2.
described transmission operation assembly (22) transfer motion power pattern can be manually, surge, one of in electronic.
The beneficial effect of
the utility model is: on two disc type valve plates 4, axially respectively be provided with more than one through hole 26; Under the same traffic situation; Not only increased the escaped quantity of gas phase component in the pipeline (see Fig. 7～Fig. 8), the hole cavitation phenomenons generation with gas is piled up at the dead angle of reducing throttle valve orifice plate ingress sandstone, most importantly the outlet port of porous orifice plate in the high-pressure injection zone of intersection (see figure 9); Heterogeneous fluid has formed the energy consumption depressor area that liquidates (seeing shadow zone among Fig. 6-1～Fig. 6-4); Thereby the internal kinetic energy that has reduced high-velocity fluid washes away what tube wall formed with it, significantly improves the working life of throttle valve, for equal classification throttling decompression tube Lu Eryan; The utility model can reduce pipe throttle progression, reduces operation cost of enterprises.
the utility model also can be widely used in the delivery line of heterogeneous fluid-mixing in fields such as metallurgy, mine, capital construction, sewage treatment, harbour shipping and the industry.
Description of drawings
Fig. 1-1～Fig. 1-4 is an orifice-plate type throttle valve working principle schematic representation;
Fig. 2 is resistance coefficient λ=(Re, plotted curve of ε/d);
Fig. 3, Fig. 4 are the board-like throttle valve user mode of conventional holes structural representations;
Fig. 5 is the utility model structural representation;
Fig. 6-1～Fig. 6-the 4th, the utility model energy consumption depressor area structural representation that liquidates;
Fig. 7～Fig. 9 is the utility model user mode structural representation.
Among
its figure: the two flanges of 1-; 2-erosion control cover; The 3-valve seat; The 4-valve plate; The 5-shift fork; The 6-valve body; The 7-wavy spring; 8-Ο shape circle; The 9-valve gap; The 10-valve rod; The 11-seal ring; 12-∪ shape packing; The 13-gasket seal; The 14-thrust-bearing; The 15-sealing gland; The 16-nut; The 17-stud bolt; The 18-socket head screw; The 19-flat key; The 20-worm gear; The 21-round nut; 22-operates assembly; 23-Ο shape circle; The 24-gasket ring; The 25-packing; The 26-valve opening; 27-ten groove oval-head screw; The 28-tuning drive gear; The 29-socket head screw.
Embodiment
The utility model is explained the practical implementation method with Fig. 5 oil (gas) well head orifice-plate type throttle valve as most preferred embodiment:
A. get the raw materials ready:
The shape size of the throttle valve member that
are at first confirmed to be complementary with parameters such as pressure, temperature, flow, environment serviceability temperatures according to designing requirement; Consider high temperature, high pressure, the high-frequency Environmental Conditions of high burn into of oil (gas) well, general with high tenacity, corrosion-resistant strong Cr-Mo steel forging as the selection of throttle valve main body; With Hard Alloy Steel as the easily worn part base material.
Prefabricated component is modified:
are because after the red forging processing of Cr-Mo steel forging process; Material internal has gathered the very big stress that forges; As do not eliminate the use that will have a strong impact on half-finished in the future processing and finished product; Basically can eliminate most internal stress in annealed processing back, preferably can adopt the processing means of crystallographic orientation, eliminate material prestressing force; Reduce the micro-cracks of material internal; To obtain high-intensity directed lattice molecule, improve the base material quality of product; Normality does not have the timeliness of exerting pressure.
Machining:
are different from foundry goods processing, and Cr-Mo steel forging toughness is stronger, and the speed of metal cutting is unsuitable too fast, corner angle occur for member and all answer chamfering, concentrate in order to avoid stress.
will be annealed and ageing treatment by the prestressing force that metal cutting brings equally, eliminate material metal processing prestressing force, especially property at parts of edges and corners, in order to avoid the cracking of member during heat treatment.
Heat treatment:
need the throttle valve member is carried out carburizing, nitriding in order to improve wear-resisting, the corrosion resistance of material surface; Process treating such as acid wash passivation, phosphatization can be carried out local laser ceramics sintering to member cavity inner surface.
Ageing treatment will be carried out for heat treatment in
, then must carry out desulfurization, dehydrogenation processing for the pickling member, especially after member carries out soldering, in case the battery corrosion effect of material.
Need carry out soldering for member, then adopt Co
2
, N
2
Gas protection welding process is to prevent the generation of member oxidative phenomena.
The member flaw detection:
The ultrasonic flaw detection technology can be adopted to smooth surface according to the form of member in
; Pair of orthogonal or non-conformation of rules adopt magnetic line of force inspection technique; Then adopt γShe Xian imaging inspection technique for the welding part; Carry out the Crack Detection of material, to guarantee the safety in utilization of finished product.
should just should be carried out the flaw detection of main component in the modified link of above-mentioned prefabricated component for high-end, multiple operation product, in order to avoid cause the inaction effect of later process owing to the base material crack.
Frock:
are because the utility model mostly is used for oil (gas) well head; Generally all adopt the mechanical assistance frock; Adopt hydraulic pressure or manual indicating type pressure assembling apparatus for drive fit parts (as: erosion control cover 2); Forbid to beat the formula assembling, then must adopt the torsion torque special spanner, and should not adopt the pneumatic type assembling for bolt and nut formula fastening piece; Whole assembly process should be avoided the surface of the member wound of drawing, scrape, wear, and in abominable Environmental Conditions, does not bring the potential safety hazard of chemical corrosion therefrom to guarantee finished product.
External coating:
consider the utility model be in the open air or ocean environment use down, the application paint of appearance should adopt titanium pigment base class paint, and inapplicable zinc, aluminium composition paint, in case the battery corrosion effect of material surface.
The integral pressure test:
owing to condition restriction, it is main generally adopting on-the-spot test, and the indoor main numerical simulation of analog machine that then adopts is auxilliary.
the utility model adopts the design concept of the power consumption step-down that liquidates according to fluid mechanics principle, has improved the throttling performance of the board-like throttle valve of conventional holes; On two disc type valve plates 4, axially respectively be provided with more than one through hole 26, under the same traffic situation, not only increased the escaped quantity of gas phase component in the pipeline; Reducing the dead angle accumulation of throttle valve orifice plate ingress sandstone and the hole cavitation phenomenons of gas takes place; Most importantly the outlet port of porous orifice plate is in the high-pressure injection zone of intersection, and heterogeneous fluid has formed the energy consumption depressor area that liquidates, thereby the internal kinetic energy that has reduced high-velocity fluid washes away what tube wall formed with it; Significantly improve the working life of throttle valve; For equal classification throttling decompression tube Lu Eryan, the utility model can reduce pipe throttle progression, reduces operation cost of enterprises.
The above is merely a preferred embodiment of the utility model
; Can not limit the protection domain of the utility model with it; The utility model also can have other structural change; So long as the equalization of doing according to the protection domain of the utility model changes and modify, all should belong in the scope that the utility model contains.
Claims (3)
1. an orifice-plate type adjustable restrictive valve comprises valve body, valve gap, valve rod, it is characterized in that:
Described valve body (6) is a T font three-port structure body, and the left side of the T font outerplanar that portals connects the two flanges (1) of an outlet, and the two is fastenedly connected with stud bolt (17) and nut (16), connects the plane and locates to be sealed by gasket ring (24);
The inner radius of portalling in the left side is provided with a counterbore step; Be provided with two valve seats (3) in the interior outside of step; Between two valve seats (3), be provided with the valve plate (4) in two same axle center; Two valve plates (4) are the disc type plane and connect, but the through hole (26) that axially respectively is provided with at least one is gone up in concentric displacement each other at two disc type valve plates (4);
The inner radius of portalling on right side hole countersunk connects a mesopore valve gap (9); The two is sealed by seal ring (11); Be fastenedly connected with stud bolt (17) and nut (16); Another axial place of portalling is provided with the built-in thrust-bearing of hole countersunk bearing support (14) at valve gap (9), and by gasket seal (13) and U type packing (12) sealing, valve gap (9) port is sealed by sealing gland (15) between valve gap (9) and thrust-bearing (14);
The single flange arrangement of Kong Weiyi is advanced in the bottom side of T font;
Described valve rod (10) portals and valve gap (9) through about valve body (6) T font; Its front end connects shift fork (5) and reinforces with wavy spring (7) form; The stage casing is provided with thrust-bearing (14) and worm gear (20) step; Worm gear (20) is by flat key form pin joint, and tail end and valve rod (10) packing (25) is fastening by bolt (29), and a scale pointer (28) is arranged between packing (25) and bolt (29);
Described shift fork (5) and valve plate (4), valve plate (4) and valve seat (3) are all with the movable pin joint of bolt;
Described valve rod (10) packing (25) is that three lip types are connected the orthogonal thereto coupling of worm gear (20) that transmission operation assembly (22) central worm and valve rod (10) are gone up pin joint with operation assembly (22) shaped as frame.
2. orifice-plate type adjustable restrictive valve according to claim 1, the two flanges (1) that it is characterized in that portalling described T font left side outerplanar connects, its internal diameter has a nesting type cemented carbide erosion control cover (2).
3. orifice-plate type adjustable restrictive valve according to claim 1, it is characterized in that described transmission operation assembly (22) transfer motion power pattern can be manually, surge, one of in electronic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201392384U CN202165699U (en) | 2011-05-05 | 2011-05-05 | Orifice plate type adjustable throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201392384U CN202165699U (en) | 2011-05-05 | 2011-05-05 | Orifice plate type adjustable throttle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202165699U true CN202165699U (en) | 2012-03-14 |
Family
ID=45801524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201392384U Expired - Fee Related CN202165699U (en) | 2011-05-05 | 2011-05-05 | Orifice plate type adjustable throttle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202165699U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767631A (en) * | 2011-05-05 | 2012-11-07 | 上海威含德石油机械设备有限公司 | Orifice-plate type adjustable throttle valve and manufacturing method thereof |
| CN104141804A (en) * | 2014-07-01 | 2014-11-12 | 中国科学院等离子体物理研究所 | Valve plate structure for quick sealing vacuum valve |
-
2011
- 2011-05-05 CN CN2011201392384U patent/CN202165699U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767631A (en) * | 2011-05-05 | 2012-11-07 | 上海威含德石油机械设备有限公司 | Orifice-plate type adjustable throttle valve and manufacturing method thereof |
| CN104141804A (en) * | 2014-07-01 | 2014-11-12 | 中国科学院等离子体物理研究所 | Valve plate structure for quick sealing vacuum valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20170505 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |