CN202381710U

CN202381710U - Ultra-light self-pressing and self-sealing control valve

Info

Publication number: CN202381710U
Application number: CN2011205786807U
Authority: CN
Inventors: 陈光焕
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-31
Filing date: 2011-12-31
Publication date: 2012-08-15
Anticipated expiration: 2021-12-31

Abstract

An ultra-light self-pressing and self-sealing control valve is capable of converting self pressure of fluid into power for opening and closing the valve and is free of movable sealing. The ultra-light self-pressing and self-sealing control valve comprises a valve body, a primary air chamber, an inlet and an outlet are disposed in the valve body, a valve clack covers on the outlet, a pilot hole is disposed in the valve clack, an inner liner is sleeved in a bonnet, a gap is reserved between the inner liner and the valve clack, a secondary air chamber is formed in the inner liner, the bonnet is fixed onto the valve body, a valve stem and a valve stem core are integrally connected to be disposed in a closed cylinder, only a pointed plug of the valve stem is exposed out of the pilot hole, an inner magnetic ring is disposed in the valve stem core, and the closed cylinder is fixed onto the bonnet.

Description

The pressure self-enclosed control valve of surperlight type

Technical field

The utility model relates to a kind of valve, more precisely is a kind ofly to become the power of making the valve Push And Release to self pressure of fluid, realizes the pressure self-enclosed control valve of surperlight type.

Background technique

The history of human existing centuries of application to valve, that uses till today mainly contains stop valve, gate valve, butterfly valve and ball valve etc. always; And the seal ring requisite lifelong accessory that always is exactly any valve.Gap sealing between the rotation of particularly static valve gap and valve rod (sealing of living), and the various valves that are sealed in HTHP, its adjustment, to change seal ring just more frequent.Though world today's new and high technology is fast-developing, is just promoting aspect the material of seal ring also, and aspect valve design, implementing to get rid of the use seal ring or improve the seal ring Environmental Conditions and alleviate the excellent process of valve Push And Release dynamics.For example, an inside nominal diameter is the stop valve of 100mm, uses in the medium of nominal pressure 8Mpa, and its strength of closing must be greater than 6280Kg, and adopts the design's scheme, only needs the startup strength of 90Kg to get final product.Too big just because of the dynamics of closing, when big Du Shan Shenzhen and Hong Kong, Dalian on July 16 in 2010 piping for tank farm knocking fuel has just been arranged, need tens lads to take turns flow operation and just bar up the valve of oil sources.If utilize the immediate action valve of present technique, only need a people light to carry, can quick closedown.And for example in March, 2011, the large-scale subsequent use generator set of Fukushima, Japan nuclear plant is washed away by tsunami, no large power supply, and the valve of not opening adds does not intake and looks at " raw material rod " helplessly and hardening cracked and cause nuclear leakage.

Summary of the invention

The purpose of the utility model is to provide a kind of self pressure fluid to become the power of making the valve Push And Release, realizes not having the pressure self-enclosed control valve of sealing surperlight type of living.

In order to achieve the above object, the solution that the utility model is taked is: the pressure self-enclosed control valve of a kind of surperlight type, and it comprises valve body; Be provided with air chamber, import and an outlet in the valve body, flap covers in the outlet port, is provided with pilot hole in the flap; Inside lining sleeve is enclosed within the valve gap, between inside lining sleeve and the flap slit is arranged, and forms No. two air chambers in the inside lining sleeve; Valve gap is fixed on the valve body, and valve rod and valve rod fuse are made into by screw thread work and are wholely set in closed cylinder, only has valve rod point chock plug to be exposed to outside the pilot hole; In the valve rod fuse internal magnetic ring is arranged, closed cylinder is fixed on the valve gap.

This valve has been taked totally enclosed mode; Promptly exactly the slit between valve gap and the valve rod is sealed with closed cylinder; The change motive sealing is a static seal, or utilizes the technology of welding that valve gap and closed cylinder are carried out fixing welding, makes it and never leaks (having got rid of sealing alive).Under inside and outside isolated situation, utilize the suction of high magnetic neodymium iron boron or electromagnetic attraction to draw the Push And Release that valve is implemented in inner valve rod action.Yet how only tens kilograms of magnet suction bring into play the effect of hundreds of kilogram even several thousand kilograms, just the emphasis of this case innovation part.Its method is: the valve endosome is provided with two pressure-bearing air chambers respectively.An air chamber is arranged on the power of the unlatching of the conduct on every side flap of flap bottom; The plane is provided with air chamber No. two on flap again, and self pressure that utilizes fluid compresses flap and outlet and closes (because of the outlet port belongs to zero pressure) tight.When valve need be opened, as long as with No. two air chamber step-downs a little, No. one the interior pressure of air chamber became the power of opening flap at once.Like this, not only realized pressure self-enclosed, but also reached to press off certainly and opened; Not only weight is closed tight but also is opened easily.For example: an inside nominal diameter is the stop valve of 100mm; Use is in the medium of nominal pressure 8Mpa, and its strength of closing must be greater than 6280Kg, and adopts the design's scheme; Only need the startup strength of 90Kg get final product, and the dynamics of sealing reach as high as 8000 surplus kilogram.Its formula is following: suppose: inside nominal diameter 100mm; Nominal pressure 8MPa; Inside nominal diameter 100mm:50 * 50 * 3.14 * 0.8Kg=6280Kg; Valve export external diameter of pipe

(the highest sealing dynamics);

EQSN Φ 165.2mm-0.2mm=165mm (FB Φ); No. two air chambers and flap slit area XD Φ 11.6mm:5.8 * 5.8 * 3.14 * 0.8Kg=84.5Kg; The deadweight of flap in addition, the visible strength that starts only needs 90Kg; Through the parameter of gear and screw rod, actual startup dynamics is not as good as 20Kg again.

Description of drawings

Fig. 1 is the utility model structural representation.

Among the figure: 1, valve gap, 2, valve rod, 3, No. two air chambers, 4, inside lining sleeve, 5, set screw, 6, flap; 7, air guide chamber, 8, valve rod tip plug, 9, import, 10, air chambers, 11, pilot hole; 12, outlet, 13, valve body, 2-1, closed cylinder, 2-2, internal magnetic ring, 2-3, valve rod fuse.

Embodiment

Below in conjunction with embodiment and accompanying drawing thereof the utility model is remake description.

Referring to Fig. 1, the pressure self-enclosed control valve of a kind of surperlight type, it comprises valve body 13; Be provided with air chamber 10 in the valve body 13 No. one, import 9 and outlet 12, flap 6 covers at outlet 12 places; Be provided with pilot hole 11 in the flap, inside lining sleeve 4 is enclosed within the valve gap 1, between inside lining sleeve 4 and the flap 6 slit is arranged; Form No. two air chambers 3 in the inside lining sleeve, valve gap 1 is fixed on the valve body 13, and valve rod 2 is made into by screw thread work with valve rod fuse 2-3 and is wholely set in closed cylinder 2-1; Only have valve rod point chock plug 8 to be exposed to outside the pilot hole 11, among the valve rod fuse 2-3 internal magnetic ring 2-2 is arranged, closed cylinder 2-1 is fixed on the valve gap 1.

Referring to Fig. 1, on the described pilot hole 11 air guide chamber 7 is arranged.

Referring to Fig. 1, the working principle of this valve is summarized as follows: flap 6 covers at outlet 12 places, when pressure fluid gets into an air chamber 10 from import 9, wherein enters into air chamber 3 No. two the slit of segment fluid flow between inside lining sleeve 4 and flap 6.Because the slit between valve rod 2 and the valve gap 1 has been closed cylinder 2-1 and has sealed, and is equal to so form the pressure of No. two air chambers 3 and an air chamber 10 fast; At this moment because outlet 12 belongs to zero pressure, so flap 6 receives the pressure of No. two air chambers 3 to seal valve port tight.Here it is under the situation of inside and outside isolated (referring to that slit between valve rod 2 and the valve gap 1 is closed cylinder 2-1 and seals), realizes pressure self-enclosed.Pressure is high more to close sternly more.The unlatching of valve: the integral body of valve rod 2 and valve rod fuse 2-3 is arranged among the fluid of closed cylinder 2-1 pressure; Only be exposed to outside the pilot hole 11 with regard to valve rod point chock plug 8; Because pilot hole 11 cross sections minimum (account for valve nominal flow path 1.5%), so the dynamics of opening is extremely light.The power source of opening, in rotation, because the strength of fuse internal magnetic ring 2-2 adhesive makes valve rod fuse 2-3 also in rotation, valve rod 2 is along with screw thread is raised at valve rod fuse 2-3 center from other accessory (final controlling element).When as long as valve rod point chock plug 8 is raised 0.10 millimeter, the pressure fluid around it up pushes away valve rod point chock plug 8 from past rapidly outlet 12 sluicings of pilot hole 11 simultaneously, and pilot hole 11 is drained at full capacity, and at this moment No. two air chamber 3 interior pressure descend; When the pressure of the air chamber 10 of pressure ratio of No. two air chambers 3 was lower slightly, its flap 6 natures were up pushed up by the pressure of an air chamber 10, and thread load is alleviated, and only play metering function.When the space of No. two air chambers 3 becomes more and more littler, its fluid is extruded from pilot hole 11; Simultaneously, the backlash of pilot hole 11 fluids discharging is also helping the rising of flap 6.This shows that much no matter employed hydrodynamic pressure has, as long as the pressure of No. two air chambers 3 slightly is reduced to air chamber 10 No. one, it just is opened easily naturally.The closing of valve (recovery): because the adhesive strength of internal magnetic ring 2-2 and external final controlling element; As long as reverse final controlling element valve rod 2 is down slightly fallen (because of under the situation of pressure ad eundem; The decline dynamics is extremely light), valve rod point chock plug 8 is made up in pilot hole 11, along with flap 6 continues to descend; The space of No. two air chambers 3 enlarges gradually, and the filling in No. two air chambers 3 in expansion space just constantly from the slit of flap 6 and inside lining sleeve 4 of the higher fluid of pressure; Just, valve rod 2 thread load are alleviated,, be intended to control flow rate actually and close at a slow speed though the screw thread counter-rotating resets like this because the filling of this burst strength can not rebounded flap 6 by the pressure of an air chamber 10; When flap 6 closes to the extreme, reducing gradually because export 12 hydrodynamic pressure, and the pressure of No. two air chambers 3 is increasing gradually, so close more and more tighter.Realized pressure self-enclosed.

Claims

1. pressure self-enclosed control valve of surperlight type, it comprises valve body (13), it is characterized in that: be provided with an air chamber (10) in the valve body (13); Import (9) and outlet (12), flap (6) are covered in outlet (12) and are located, and are provided with pilot hole (11) in the flap; Inside lining sleeve (4) is enclosed within the valve gap (1), between inside lining sleeve (4) and the flap (6) slit is arranged, and forms No. two air chambers (3) in the inside lining sleeve; Valve gap (1) is fixed on the valve body (13), and valve rod (2) and valve rod fuse (2-3) are made into by screw thread work and are wholely set in closed cylinder (2-1), only has valve rod point chock plug (8) to be exposed to outside the pilot hole (11); Internal magnetic ring (2-2) is arranged in the valve rod fuse (2-3), and closed cylinder (2-1) is fixed on the valve gap (1).

2. the pressure self-enclosed control valve of surperlight type according to claim 1 is characterized in that: air guide chamber (7) is arranged on the described pilot hole (11).