CN201155578Y

CN201155578Y - Hydropower control valve

Info

Publication number: CN201155578Y
Application number: CNU2008200555768U
Authority: CN
Inventors: 徐鹤
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-02-19
Filing date: 2008-02-19
Publication date: 2008-11-26
Anticipated expiration: 2018-02-19

Abstract

The utility model discloses a hydraulic control valve and is characterized in that a telescopic valve seat is arranged inside a valve body; the telescopic valve seat is arranged between an entrance end and an exit end; one side of the telescopic valve seat facing towards the exit end is provided with a sluice opening to communicate with the exit end; a sealing socket is arranged on the lower end of the sluice opening of the telescopic valve seat; a sliding bush gate is arranged in the telescopic valve seat and connected with the seal of the telescopic valve seat in a sliding way; a sealing flange is arranged on the upper end of the sliding bush gate; the sealing flange on the upper end of the sliding bush gate is connected with the seal of the control cavity of the valve body in a sliding way; an upper pressure chamber and a lower pressure chamber are formed in the control cavity. The utility model has the advantages that a sleeve gate is arranged in the valve seat; the sleeve gate is provided with an opening to communicate with the exit of the valve seat; compared with the prior art, the total area of the valve port is larger than that of the valve port of the prior hydraulic control valve; and variation in discharge is linear; after entering into the valve seat, the fluid flows towards the exit from one direction to reduce a turbulent phenomenon in the exit so as to reduce cavitation. The hydraulic control valve has the advantages of compact structure, small component, easy maintenance, simple and convenient installation, small water hammer and long service life of the sealing socket.

Description

A kind of hydraulic control valve

Technical field

The utility model relates to the technical field of valve, is specifically related to a kind of hydraulic control valve.

Background technique

At present, the design of most hydraulic control valves has following deficiency: 1, drive the switch size that valve plate comes control valve by valve rod, the ratio that valve plate leaves valve body distance and flow is non-linear, when valve plate is lifted off a seat when nearer, changes in flow rate is big, leave when far away, changes in flow rate is little, therefore at valve plate during near valve seat, pressure has the fluctuation valve plate just to be difficult to remain on certain position slightly, valve needs often to regulate, cause the fluctuation of outlet pressure and the damage of part easily, and the valve that is used for pressure regulation is set in certain specific pressure usually, so valve rod always often rubs at certain position and lining, wearing and tearing of long duration can form the gap, and the gap is big will produce the instability of vibration and pressure.2, run into valve plate when fluid when the valve body and flow out radially, and the outlet of valve body has only one side, the fluid of other face to have only by valve wall reflection this outlet of turning back, and therefore causes flowing medium disorder in the valve body, and cavitation takes place easily.3, their sealing is the design of resisting valve seat with valve plate stubbornly, and the sealing of extruding type damages easily, causes leakage.4, the valve seat area of traditional hydraulic control valve causes the big flow of flow resistance little less than the import bore.5, their component are many, the more complicated that has, and the design that especially big or small valve plate is closed for twice, and fastening pieces such as bolt or nut are arranged in the part that contacts with medium, the part difficult more assurance of multimass and maintenance more is also complicated.6, their the water hammer weak effect that disappears, the design that big or small valve plate is closed for twice neither be very desirable, because that big valve plate is closed is too fast, causes water hammer peak value increased frequency and peak value to reach water-aspirator pressure about 1.5 times.7, because their part is many, therefore make valve heavier.

The model utility content

The purpose of this utility model is to provide a kind of hydraulic control valve, transfers stream accurately thereby reach valve, and flow passage design reduces cavitation, the sealing seat life-span is long, the big flow resistance of flow is low, water hammer is little, component keep in repair easy purpose less.

In order to realize this purpose, the technical solution of the utility model is as follows: a kind of hydraulic control valve, comprise valve body, valve body one side is provided with entrance point, the valve body opposite side is provided with outlet end, the valve body upper end is provided with control chamber, the control chamber bottom is provided with cage ring, the control chamber top is provided with valve gap, and control chamber is provided with pressure interface, it is characterized in that being provided with in the valve body sleeve valve seat, sleeve valve seat upper end is connected with the valve body control chamber, sleeve valve seat lower end is connected with the valve seat entrance point, and the sleeve valve seat is provided with the lock hole towards outlet end one side and is communicated with outlet end, and lower end, sleeve valve seat lock hole is provided with sealing seat, be provided with the sliding sleeve lock in the sleeve valve seat and sleeve valve seat sealed sliding is dynamically connected, sliding sleeve lock upper end is provided with sealing flange, and the sealing flange of sliding sleeve lock upper end and the control chamber sealed sliding of valve body are dynamically connected, and forms two pressure chambers up and down in control chamber.Lower end, sleeve valve seat lock hole is provided with several dredging flow grooves, and dredging flow groove is positioned at the sealing seat top.The inboard, edge of sealing seat is provided with rubber projections obliquely.According to an embodiment of the present utility model, the cage ring sealing and fixing of the control chamber bottom of sleeve valve seat upper end and valve body, lower end and valve body entrance point are tightly connected, pressure chamber is equipped with pressure interface up and down, the sealing flange downside of sliding sleeve lock upper end is provided with the Slow Close circle, the sleeve valve seat is provided with the groove that matches with the Slow Close circle, and groove communicates with the pressure interface in downforce chamber.According to another embodiment of the present utility model, leave the space between the cage ring of the control chamber bottom of sleeve valve seat upper end and valve body, lower end and valve body entrance point sealing and fixing, the sealing flange downside of sliding sleeve lock upper end is provided with the Slow Close circle, the Slow Close circle of sealing flange is between sleeve valve seat and cage ring, and circle is slidingly connected with the Slow Close circle cylindrical of sealing flange in the cage ring of valve body control chamber lower end.

The utility model has the advantages that and in valve body, be provided with the sleeve valve seat, the sleeve valve seat is established the lock hole and is communicated with outlet end, the area in lock hole is more than or equal to the area of valve port, and changes in flow rate is linear, after fluid enters valve body, flow to outlet from a direction, reduced the turbulent phenomenon in outlet port, thereby reduce the generation of cavitation.The rubber projections that the inboard, edge of sealing seat is provided with obliquely can play the closing assisted effect of pressure, therefore can rubber be damaged.Compact structure, the component of valve are few, maintenance is easy, the critical piece of this hydraulic control valve has only valve body, valve gap, sleeve valve seat, sliding sleeve lock and sealing seat, except Sealing, there is not quick-wear part, only need when changing Sealing valve gap is opened, taking out the sliding sleeve lock is replaceable Sealing, installation and maintenance are simple and convenient, do not have bolt, nut or other finding, and assurance improves the quality.Be provided with Slow Close structure on dredging flow groove and the sliding sleeve lock at lock bore closure end, be difficult for producing water hammer when making valve closing.The weight of this hydraulic control valve has only about 60 percent of traditional water force control valve.Different hydraulic control system in the configuration can become dissimilar control valves, and have the function of stop valve, safety check, flow-adjustable valve and water-hammer arrester concurrently.

Description of drawings

Fig. 1 is first an embodiment's of the present utility model structural representation

Fig. 2 is the amplification working drawing of A among Fig. 1

Fig. 3 is the amplification working drawing of B among Fig. 1

Fig. 4 is the utility model second embodiment's a structural representation

Fig. 5 is the amplification working drawing of C among Fig. 4

Fig. 6 is the utility model the 3rd embodiment's a structural representation

Embodiment

Fig. 1 shows the utility model first embodiment's structural representation.A kind of hydraulic control valve, comprise valve body 1, valve body 1 one sides are provided with entrance point, valve body 1 opposite side is provided with outlet end, valve body 1 upper end is provided with control chamber, the control chamber bottom is provided with cage ring 8, the control chamber top is provided with valve gap 2, control chamber is provided with pressure interface, is provided with sleeve valve seat 3 in the valve body 1, and sleeve valve seat 3 is between entrance point and outlet end, cage ring 8 sealing and fixing of the control chamber bottom of sleeve valve seat 3 upper ends and valve body 1, lower end and entrance point are tightly connected, and sleeve valve seat 3 is provided with the lock hole towards outlet end one side and is communicated with outlet end, and lower end, sleeve valve seat 3 lock hole is provided with sealing seat 5.Being provided with sliding sleeve lock 4 in the sleeve valve seat 3 is dynamically connected with sleeve valve seat 3 sealed sliding, sliding sleeve lock 4 upper ends are provided with sealing flange, the sealing flange of sliding sleeve lock 4 upper ends and the control chamber sealed sliding of valve body 1 are dynamically connected, thereby form two pressure chambers up and down in control chamber, and pressure chamber is equipped with pressure interface up and down.In this embodiment, be provided with spring 6 between valve gap 2 and the sliding sleeve lock 4.

Referring to Fig. 2, sealing flange 10 downsides of sliding sleeve lock 4 upper ends are provided with Slow Close circle 11, sleeve valve seat 3 is provided with the groove 12 that matches with Slow Close circle 11, groove 12 communicates with pressure interface 13, when 4 downslides of sliding sleeve lock put in place, Slow Close circle 11 is positioned at groove 12 and blocks the passage of pressure interface 13, makes that like this medium in the downforce chamber can only ooze, and plays the effect of Slow Close.

Referring to Fig. 3, lower end, sleeve valve seat 3 lock hole is provided with several dredging flow grooves 14, and dredging flow groove 14 is positioned at sealing seat 5 tops.When sliding sleeve lock 4 slowly slided into the lower end, lock hole of telescoping valve seat 3 down, the lock hole was blocked, and flowed out but medium still can pass through dredging flow groove 14, thereby avoided the lock hole to close the impact that causes quickly.The inboard, edge of sealing seat 5 is provided with rubber projections 15 obliquely, because this rubber projections 15 has certain elasticity, when sliding sleeve lock 4 glides when putting in place, the sealing that can not squeeze rubber firmly and can be closed by the pressure auxiliary valve makes sealing seat 5 not fragile.

Fig. 4 shows the utility model second embodiment's structural representation.First embodiment and second embodiment's difference is, the cage ring of first embodiment's valve body, 1 control chamber bottom and the upper end sealing and fixing of sleeve valve seat 3, lower end and entrance point are tightly connected, and second embodiment's middle sleeve valve seat, 3 upper ends are open, and leave the space between the cage ring of valve body 1 control chamber bottom, purpose is to make the downforce chamber identical with outlet end pressure, and sleeve valve seat 3 lower ends and entrance point sealing and fixing.

Referring to Fig. 5, the sealing flange downside of sliding sleeve lock 4 upper ends is provided with Slow Close circle 11, and Slow Close circle 11 is between sleeve valve seat 4 and cage ring 8, and circle is slidingly matched with Slow Close circle 11 cylindricals of sealing flange 10 in the cage ring 8 of valve body 1 control chamber lower end.When valve closing, when the Slow Close circle 11 of sliding sleeve lock 4 sealing flanges 10 is advanced to the cage ring 8 of valve body 1 control chamber bottom, the sealing flange 10 of sliding sleeve lock 4 and the medium between the cage ring 8 can only flow out by the gap that is slidingly matched, limit the speed that sliding sleeve lock 4 cuts out like this, played the effect of Slow Close.

Fig. 6 is the utility model the 3rd embodiment's a structural representation.The 3rd embodiment and first embodiment's difference is: first embodiment's valve body 1 entrance point and valve body 1 outlet end are positioned on same the axis, become angle with the axis of sleeve valve seat 3 and pressure chamber, and angle is at 50 °～85 °; And the axis of the axis of the 3rd embodiment's entrance point and outlet end and sleeve valve seat 3 and pressure chamber meets at right angles.Be to be understood that, hydraulic control valve described in second embodiment, the axis of sleeve valve seat 3 and pressure chamber and the axis of entrance end also can meet at right angles, the advantage at right angle is easy to maintenance, because be convenient to lifting, straight up and down, the oblique difficult on-site sliding sleeve lock that takes out, especially bigbore valve is too heavy.And first embodiment's valve body 1 entrance point becomes the advantage of angle to be that current are shorter to the path of outlet end through sleeve from entrance point with valve body 1 outlet end with the axis of sleeve valve seat 3 and pressure chamber, and flow resistance is lower.

Valve inlet end of the present utility model can exchange according to different application with outlet end; the valve body entrance point that is about to this valve uses as outlet end; and the valve outlet end of this valve is used as entrance point, this conversion also should belong to the scope of the utility model protection.

Claims

1, a kind of hydraulic control valve, comprise valve body, valve body one side is provided with entrance point, the valve body opposite side is provided with outlet end, the valve body upper end is provided with control chamber, the control chamber bottom is provided with cage ring, the control chamber top is provided with valve gap, control chamber is provided with pressure interface, it is characterized in that being provided with in the valve body sleeve valve seat, and sleeve valve seat upper end is connected with the valve body control chamber, sleeve valve seat lower end is connected with the valve seat entrance point, the sleeve valve seat is provided with the lock hole towards outlet end one side and is communicated with outlet end, and lower end, sleeve valve seat lock hole is provided with sealing seat, is provided with the sliding sleeve lock in the sleeve valve seat and sleeve valve seat sealed sliding is dynamically connected.

2, hydraulic control valve as claimed in claim 1 is characterized in that sliding sleeve lock upper end is provided with sealing flange, and the sealing flange of sliding sleeve lock upper end and the control chamber sealed sliding of valve body are dynamically connected, and form two pressure chambers up and down in control chamber.

3, hydraulic control valve as claimed in claim 2, the cage ring sealing and fixing that it is characterized in that the control chamber bottom of sleeve valve seat upper end and valve body, lower end and valve body entrance point are tightly connected, pressure chamber is equipped with pressure interface up and down, the sealing flange downside of sliding sleeve lock upper end is provided with the Slow Close circle, the sleeve valve seat is provided with the groove that matches with the Slow Close circle, and groove communicates with the pressure interface in downforce chamber.

4, hydraulic control valve as claimed in claim 2, it is characterized in that leaving the space on the sleeve valve seat and between the cage ring bottom the control chamber of valve body, lower end and valve body entrance point sealing and fixing, the sealing flange downside of sliding sleeve lock upper end is provided with the Slow Close circle, and circle is slidingly connected with the Slow Close circle cylindrical of sealing flange in the cage ring of valve body control chamber lower end.

5, as each described hydraulic control valve in the claim 1 to 4, it is characterized in that lower end, sleeve valve seat lock hole is provided with several dredging flow grooves, dredging flow groove is positioned at the sealing seat top.

6, as each described hydraulic control valve in the claim 1 to 4, the inboard, edge that it is characterized in that sealing seat is provided with rubber projections obliquely.

7, as each described hydraulic control valve in the claim 1 to 4, it is characterized in that valve body entrance point and valve outlet end are positioned on same the axis, become angle with the axis of sleeve valve seat and pressure chamber, angle is at 50 °～85 °.

8,, it is characterized in that being provided with spring between valve gap and the sliding sleeve lock as each described hydraulic control valve in the claim 1 to 4.