CN1171510A

CN1171510A - Magnetically coupled stop valve

Info

Publication number: CN1171510A
Application number: CN 96102387
Authority: CN
Inventors: 孙平
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-07-18
Filing date: 1996-07-18
Publication date: 1998-01-28
Anticipated expiration: 2016-07-18
Also published as: CN1082163C

Abstract

A magnetically coupled shutoff valve is composed of valve body, cover of valve body, valve rod, valve flap, and valve cap, and features that internal magnet inlaid in upper part of valve rod by installing holder and external magnet which may be electromagnet are respectively arranged the relative positions of valve rod and cap. An elastic element is used to connect valve flap and cover of valve body for full sealing of shutoff. In order to improve the pressure equlization, pressure equalizing hole and transverse hole are made on valve rod and vertical hole on valve flap for flexible opening or closing of valve. If electromagnet is used to replace external magnet, remote control can be implemented.

Description

Magnetic Cooperate Globe Valves

The present invention relates to a kind of Magnetic Cooperate Globe Valves that isostasy is provided with that has.

About being suitable for different purposes, the valve that difference in functionality is arranged, structure is a lot, in the most frequently used stop valve, leak for the ease of opening and preventing, Chinese patent 96201382 proposition a kind of " novel Magnetic Cooperate Globe Valves " its valve bodies and body cap are by cooperating and be formed with the closure of cavity, the top of flap is connected with a bellows, the bottom has a through hole to match with stem lower portion, because flap lower through-hole diameter is little, pressurized is little, thereby valve rod top can adopt magnetic coupling to come Open valve, then, be subjected to the effect of upward force and thoroughly open valve by the I-shaped flap.This opening of valves, by convenient, and solved the big problem that slide member is difficult to seal, but, this valve because each cavity only depends on the slit counterpressure, is in closed state substantially when opening and closing, can not in time adapt to the variation in pressure in unlatching, the procedures of turn-off, thereby certain structures is unreasonable, and its open and close resistance can also be obtained significant improvement by the improvement of structure.

The present invention provides a kind of open and close rapid, laborsaving for avoiding the deficiencies in the prior art part, can guarantee not have to leak, and opens with electromagnetic induction mechanism, also can be remotely-controlled, have the Magnetic Cooperate Globe Valves that isostasy is provided with.

The present invention can realize with the following method, Magnetic Cooperate Globe Valves, by valve body, body cap, valve rod, flap, bonnet and elastic component are formed, valve rod top is equipped with interior magnetic patch (8), bonnet is inboard to be equipped with outer magnetic patch (9) with interior magnetic patch corresponding position, the valve rod central shaft to, on open down to close and be provided with the isostasy hole, on open in the valve gap cavity, stem lower portion has the cross-drilled hole that is connected with balancing hole, flap is an I shape, with the lower bolster outer diameter is that equivalent diameter is made as 1, the upper mounting plate equivalent diameter is 1.05～1.30, and the plane has at least one upright hole on flap, and upright hole equivalent diameter is 0.02～0.08.Be communicated with valve port cavity and flap cavity, the elastic component upper edge is fixed on the body cap limit, and the lower edge is fixed on plane on the flap, settles opening mechanism on bonnet.

The present invention has following advantage compared to existing technology: 1, this shutoff valve adopts magnetic coupling to eliminate the shortcoming that existing valve packing sealing is easily leaked, and forms full-sealing valve.2, owing to be provided with balancing hole, cross-drilled hole and upright hole, make the pressure of flap cavity and body cap cavity be able in time obtain equilibrium with variation in pressure, rapid, laborsaving when the valve open and close, be easy to adjust flow.3, valve can be adjusted pipeline flow by handwheel or motor decelerating mechanism Open valve, also can respond to rapid poppet stem by coil electromagnetism, and Flow-rate adjustment is quick.4, be provided with the stop valve of motor decelerating mechanism or electromagnetic induction coil, can open at a distance or throttle down, help automation mechanized operation.

Description of drawings of the present invention is as follows: Fig. 1 is a structural representation of the present invention, 1-valve body, 2-body cap, the 3-valve rod, 4-flap, 5-bonnet, the 6-handwheel, magnetic patch in the 7-elastic component, 8-, the 9-scaffold, the outer magnetic patch of 10-, 11-isostasy hole, the 12-cross-drilled hole, 13-stands the hole, 14-flap and body cap mating part, 15-flap and valve rod mating part, 16-valve rod middle part raised platforms, 17-cushion.The 18-bolt, 1.-the inlet cavity, 2.-the flap cavity, 3.-the body cap cavity, 4.-outlet cavity.Fig. 2 utilizes the superstructure schematic representation of starting coil open and close valve, 19-starting coil for the present invention.

Be described in detail the present invention below in conjunction with accompanying drawing: Fig. 1 is the valve closing state, this moment is under the stream socket differential pressure action, flap and valve rod have all sealed outlet, no fluid flows out, when Open valve, valve rod (3) rises, and makes valve rod lower end flap and valve rod mating part (15) opening, and pressure descends, there is small volume of fluid to flow out from the valve rod lower end, when valve rod further rose, 2. pressure reduction involved the flap cavity, and flap is an I-shaped structure, with the lower bolster outer diameter is equivalent diameter, be made as 1, the upper mounting plate equivalent diameter is 1.05～1.30, and best equivalent diameter scope is: 1.10～1.20, be subjected to, the effect of lower bolster pressure difference, flap can rise suddenly, opens the closed mutually main exit of flap lower bolster and valve body, and fluid is flowed out rapidly in a large number.Valve rod continues to rise, and valve main exit aperture strengthens, thereby regulates flow output.When valve rod rises to top, valve port standard-sized sheet, flow maximum.When closing, the decline valve rod, stem lower portion flap and valve rod mating part (15) at first seal the flap intermediate throughholes, when valve rod continues to descend, reduce fluid flow gradually, close the flap outlet until at last.

In the valve opening and closing process, especially when rapidly opened and closed, cavity 2., 3. the variation in pressure in lags behind, 1. untimely adjustment inlet cavity can produce very big resistance and fluctuation with outlet cavity pressure reduction 4., make stem movement dumb, pressure surge also will produce vibration, to flow control, environment and life of valve are had a significant impact, for this reason, the equivalent diameter that the utility model is established valve rod is 0.1～0.5, the valve central shaft to, on open down make and break balancing hole (11) arranged, the balancing hole equivalent diameter is 0.02～0.05, and the valve rod head portion communicates with balancing hole and has cross-drilled hole (12), make the body cap cavity 3. in time and the flap inner chamber 2. and outlet cavity (4) equilibrium that keep-ups pressure; Have upright hole (13) on flap top, a upright hole be set at least, in order to timely balanced inlet cavity 1. with flap cavity pressure 2..

When the valve full cut-off, design flap upper outside surface should be able to all overlap with body cap inner wall surface place (14), and will there be bigger coincidence area at the surperficial place (15) that matches with valve rod (3) of flap internal side diameter, is all sliding motion structure.To guarantee that flap opens and closes flexibly, the position is accurate.

Elastic component (7) upper and lower end is connected on body cap (2) and the flap (4).It is for the open and close position that guarantees flap accurately and move up and down set flexibly.Can be the bellows of sheet metal material system, also can be spring.When using spring, because 1. 2. the flap cavity have abundant counterpressure function with the inlet cavity, no longer design has upright hole (13).

In order to guarantee the convenience of installation and maintenance valve rod, valve rod (3) can adopt two-stage structure, after the socket of upper and lower part, with bolt (18) crosswise fixed.In valve rod middle part design one protruding column shape platform (16) is arranged, with the interior internal surface of hole of body cap (2) to be threaded, screw thread will be processed meticulous, guarantees that the valve rod position that moves up and down is accurate, and the valve rod lower end conical surface and flap bottom inner cone notch portion (15) are sternly closed.As far as possible close bonnet (5) internal surface of the top outer surface that waits the circular arc distance to inlay interior magnetic patch (8) of valve rod (3), interior magnetic patch uses hard magnetic body or soft magnetic bodies to make, and uses soft magnetic bodies when temperature is high; The Hard Magnetic piece should use the hard magnetic body manufacturing, inside and outside magnetic patch is at least respectively installed two, interior magnetic patch and outer magnetic patch work by magnetic attachment, and institute thinks and avoid magnet short-cut path and magnetic loss, with the scaffold (9) of nonmagnetic substance manufacturing interior magnetic patch (8) fixedly are embedded in valve rod (3) top.

Aforementioned shutoff valve interacts by magnetic and affects the upper and lower motion of valve rod, so at bonnet (5) internal surface, also wait the circular arc distance to lay outer magnetic patch (10), equates with interior magnetic patch (8) quantity.The bonnet internal thread is connected with the body cap outside thread, should equate with the pitch that is threaded of body cap, valve rod, utilizes handwheel (6) to rotate bonnet, rotates the open and close valve thereby induction drives the valve rod that studs with interior magnetic patch (8).Except that manually, still useable electric moter drives bonnet (5) with gear or belt after reducing gear slows down, and plays the effect of handwheel, and motor is static with respect to valve body (1), and motor is wanted the energy forward and backward, so, just can drive valve at a distance.To some operation: as in the condition harshness, do not allow manually-operable nearby,, need aspects such as centralized management, have special benefits in poisonous, combustion, quick-fried danger.Have again, the opening mechanism of valve also can be the interior or outside at bonnet (5) or valve gap (2), be wound with two or more sets coils (19), coil external direct current power supply and control mechanism, after energising, interior magnetic patch (8) by on the electromagnetic induction attraction valve rod (3) moves up and down valve rod, reaches the purpose of open and close valve.Can make valve be in the neutral position of standard-sized sheet, full cut-off if organize coil more, can not establish bonnet this moment, be pasted with cushion (17) in the bonnet inside top surface in order to adjust range of flow, prevent and when alleviating valve wide open valve rod (3) collide body cap (2).At this moment, it is sliding motion structure that valve rod middle part raised platforms (16) should change worm structure, rapid, the accurately all right distant control of these method open and close.

Claims

1, a kind of Magnetic Cooperate Globe Valves, form by valve body (1), body cap (2), valve rod (3), flap (4), bonnet (5), handwheel (6), elastic component (7), valve rod top is equipped with interior magnetic patch (8), bonnet is inboard to be equipped with outer magnetic patch (9) with interior magnetic patch corresponding section, it is characterized in that, valve rod (3) central shaft to, on open down to close and be provided with balancing hole (11), on open upper valve body lid cavity 3. in, stem lower portion has the cross-drilled hole (12) that communicates with balancing hole; Flap is an I shape, is that equivalent diameter is 1 with the lower bolster outer diameter, and the upper mounting plate equivalent diameter is 1.05～1.30, plane on flap, be provided with at least one upright hole (13), upright hole equivalent diameter is 0.02～0.08, connecting valve inlet cavity 1. with flap chamber cavity 2.; Elastic component (7) upper and lower end is connected on body cap and the flap, and bonnet is provided with opening mechanism.

2, Magnetic Cooperate Globe Valves according to claim 1 is characterized in that interior magnetic patch (8) and the corresponding configuration of outer magnetic patch (9), and the piece number equates, at least respectively disposes 2, and the Hard Magnetic piece uses hard magnetic body to make, and soft magnetic bodies is made by hard magnetic body or soft magnetic bodies.

3, as the Magnetic Cooperate Globe Valves as described in the claim 2, it is characterized in that interior magnetic patch (8), fixedly be embedded on the valve rod (3) with scaffold (9).

4, Magnetic Cooperate Globe Valves according to claim 1 is characterized in that when the valve full cut-off, and flap (4) upper side should all overlap with body cap (2) inner side surface, and the part (14) that matches is sliding motion structure.

5, Magnetic Cooperate Globe Valves according to claim 1 is characterized in that I shape flap (4) upper mounting plate equivalent diameter the best is 1.10～1.20.

6, Magnetic Cooperate Globe Valves according to claim 1 is characterized in that elastic component (7) can be the bellows of thin steel sheet system, can be spring also, when using spring, upright hole (13) is not set.

7, Magnetic Cooperate Globe Valves according to claim 1 is characterized in that there is a projection circle platform (16) at valve rod (3) middle part, is threaded with body cap (2), and bonnet (5) and body cap (2) are also for being threaded, and two place's thread pitch are equal.

8, Magnetic Cooperate Globe Valves according to claim 1 is characterized in that valve rod (3) adopts upper and lower two segment structures, and fixing with bolt (18), the valve rod equivalent diameter is 0.1～0.5, and balancing hole in the valve rod (11) equivalent diameter is 0.02～0.05.

9, Magnetic Cooperate Globe Valves according to claim 1, it is characterized in that opening mechanism is the coil (19) that is provided with in the interior or outside of bonnet (5) or body cap (2) more than 2 groups, raised platforms this moment (16) and body cap (2) are to be slidingly connected, and the valve top inner surface is stained with rubber pad (17).

10, Magnetic Cooperate Globe Valves according to claim 1 is characterized in that valve-lifting mechanism is that bonnet (5) is rotated by handwheel (6), or bonnet (5) is connected relative static motor decelerating mechanism with valve body (1).