CN206943108U - Power station water inlet valve servo control hydraulic operated valve - Google Patents
Power station water inlet valve servo control hydraulic operated valve Download PDFInfo
- Publication number
- CN206943108U CN206943108U CN201720558794.2U CN201720558794U CN206943108U CN 206943108 U CN206943108 U CN 206943108U CN 201720558794 U CN201720558794 U CN 201720558794U CN 206943108 U CN206943108 U CN 206943108U
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- piston
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Abstract
The utility model discloses a kind of power station water inlet valve servo control hydraulic operated valve and is made up of left adjustment bar (1), left end cap (2), control piston 1 (3), main piston (4), flange (5), control piston 2 (6), valve body (7), right adjustment bar (8), right end cap (9) and locking nut (10).The device adjusts the switching speed of servomotor by adjusting the range of movement of bar limitation control piston, so as to control the switch time of water intaking valve.Present apparatus main piston end shoulder on the premise of proof strength is hollow, and so as to reduce the smaller difficulty of processing of the length of valve body, and hollow shoulder and end cap composition buffer unit can reduce the reversing impact of big orifice reversal valve.Main piston, which is provided with, presses through hole, the small resistance of motion, ensures that piston movement is smooth.
Description
Technical field
It the utility model is related to a kind of power station water inlet valve servo control hydraulic operated valve.
Background technology
The water intaking valve in power station only switchs two states, so needing a reversal valve to realize changing for water inlet valve servo
To operation.And as the diameter increase of the increase water intaking valve of unit capacity causes to lead to for the reversal valve for controlling servomotor to switch
Footpath increases.The increase of spool-type valves latus rectum, just occur reversing impact, reversal valve interim card and valve body difficulty of processing drastically
Increase.Existing big orifice reversal valve realizes commutation function using multiple inserted valves, but the cooperating between inserted valve is deposited
In hidden danger, it is possible to indivedual inserted valves occur and be failure to actuate to make servomotor remarkable action cause unit failure.
The content of the invention
The purpose of this utility model is that a kind of commutation of development is reliable, servomotor switching speed is adjustable, difficulty of processing phase
To relatively low and small reversing impact power station water inlet valve servo control hydraulic operated valve, for controlling differential type servomotor.This reality
It is with new technical scheme：A kind of power station water inlet valve servo control hydraulic operated valve, left adjustment bar 1 pass through spiral shell with left end cap 2
Line is connected, and locking nut 10 is fitted on left adjustment bar 1, and the first control piston 3 is coordinated by gap to be arranged in left end cap 2,
Right adjustment bar 8 is connected through a screw thread with right end cap 9, and locking nut 10 is locking, and the second control piston 6 is coordinated by gap to be arranged on
In right end cap 9, main piston 4 is dual stage shoulder structure, and main piston 4 is coordinated by gap to be arranged in valve body 7, by the cavity of closing point
For five separate chambers of m, n, o, p and q, m chambers are identical with Y control mouths, and q chambers and X control mouths communicate, and n chambers and p chambers pass through main piston
On centre bore connection, n chambers and p chambers communicated with T mouths all the time by the aperture of valve body, and P leads to pressure oil, and T mouths are servomotor oil return
Mouthful, P mouths connect pressurized tank, and A mouths connect servomotor and begun to speak.The stroke of left adjustment bar 1 limitation the first control piston 2 is adjusted, so as to control
The area of passage of main piston 4, reduce the flow between A mouths and T mouths, so as to adjust the ball valve shut-in time, adjust right adjustment bar 8
The stroke of the control piston 6 of limitation second, so as to control the area of passage of main piston 4, reduces the flow between A mouths and P mouths, from
And adjust the opening time of ball valve.
Operation principle of the present utility model：
A mouths are control mouth, begin to speak to be connected with servomotor, and ball valve is opened after pressure oil is passed through, the ball valve when being passed through oil return
Servomotor is closed.
P mouths are identical with oil sources, cut-in pressure tank.
T mouths are connected with oil return.
X mouths are hydraulic operated valve control mouth, and A mouths communicate with P mouths when leading to pressure oil.
Y mouths are hydraulic operated valve control mouth, and A mouths and T mouths communicate when being passed through pressure oil.
X mouths are passed through pressure oil, Y mouths connect oil return, and pressure oil enters q chambers, promote control piston driving master piston motion,
Finally P mouths are made to be communicated with A mouths.The lifting surface area of the rodless cavity of servomotor is bigger than rodless cavity area, is connect in the presence of differential force
Power device moves.The excessively stream window of hydraulic operated valve can be adjusted by the adjustment bar of Y mouths side, so as to adjust the movement velocity of servomotor.
X mouths are connected into oil return, Y mouths are passed through pressure oil, and pressure oil enters m chambers, promote control piston driving master piston motion,
Finally T mouths are made to be communicated with A mouths.The rodless cavity no pressure oil of servomotor, servomotor are transported in the presence of the pressure oil in rod chamber
It is dynamic.The excessively stream window of hydraulic operated valve can be adjusted by the adjustment bar of X mouths side, so as to adjust the movement velocity of servomotor.
The advantages of the utility model：
1. left adjustment bar 1, left end cap 2 and right adjustment bar 8, right end cap 9 form adjusting apparatus and lived for limiting the first control
The stroke of the control piston 6 of plug 3 and second realizes servomotor switch speed so as to control the size of the excessively stream window of main piston and valve body
The adjustment of degree.Locked finally by locking nut locking.
2. main piston 4 is dual stage shoulder, piston contact length of shoulder and valve body 7 during motion is larger, reduces
Cause the possibility of valve element interim card because shaking or impacting in commutation process, and the center of main piston 4 is provided with and presses through hole and oil return
Communicate, reduce the resistance during piston movement.There is the possibility of exercise not harmony in traditional insert type change-over valve, but the reality
It is a piston with new main piston 4, therefore in the absence of the possibility of exercise not harmony.
3. the shoulder of main piston 4 is hollow, the length of valve body is reduced in the case where realizing said function, reduces difficult processing
Degree.Conventional piston shoulder is solid, the longer difficulty of processing increase of valve body in the case where realizing said function.
4. hollow shoulder and left end cap 2 and right end cap 9 the composition buffer unit of main piston 4, reduce main piston 4 and left end cap
2 and the impulsive force of right end cap 9.The piston of traditional reversal valve and the rigid collision of end cap are avoided, reduces reversing impact.
Brief description of the drawings
Fig. 1 is the sectional view of two-bit triplet reversing arrangement
Fig. 2 is the axonometric drawing of two-bit triplet reversing arrangement
Embodiment
As shown in Fig. 2 a kind of power station water inlet valve servo control hydraulic operated valve, left adjustment bar 1 pass through screw thread with left end cap 2
Connection, locking nut 10 are fitted on left adjustment bar 1, and the first control piston 3 is coordinated by gap to be arranged in left end cap 2, right
Adjustment bar 8 is connected through a screw thread with right end cap 9, as shown in figure 1, locking nut 10 is locking, the second control piston 6 is matched somebody with somebody by gap
Close and be arranged in right end cap 9, main piston 4 is dual stage shoulder structure, and main piston 4 is coordinated by gap to be arranged in valve body 7, will be closed
Cavity be divided into five separate chambers of m, n, o, p and q, m chambers are identical with Y control mouths, and q chambers and X control mouths communicate, and n chambers and p chambers lead to
The centre bore connection crossed on main piston, n chambers and p chambers are communicated with T mouths all the time by the aperture of valve body, and P leads to pressure oil, and T mouths are to connect
Power device oil return opening, P mouths connect pressurized tank, and A mouths connect servomotor and begun to speak.The stroke of left adjustment bar 1 limitation the first control piston 2 is adjusted,
So as to control the area of passage of main piston 4, reduce the flow between A mouths and T mouths, so as to adjust the ball valve shut-in time, adjustment
The stroke of right adjustment bar 8 limitation the second control piston 6, so as to control the area of passage of main piston 4, makes the stream between A mouths and P mouths
Amount reduces, so as to adjust the opening time of ball valve.
The stroke of left adjustment bar limitation the first control piston is adjusted, so as to control the area of passage of main piston, makes A mouths and T
Flow between mouthful reduces, and so as to adjust the ball valve shut-in time, adjusts the stroke of right adjustment bar limitation the second control piston, so as to
The area of passage of main piston is controlled, reduces the flow between A mouths and P mouths, so as to adjust the opening time of ball valve.
Claims (1)
1. a kind of power station water inlet valve servo control hydraulic operated valve, it is characterized in that：Left adjustment bar (1) passes through spiral shell with left end cap (2)
Line is connected, and locking nut (10) is fitted on left adjustment bar (1), and the first control piston (3) is coordinated by gap is arranged on left end
Cover in (2), right adjustment bar (8) is connected through a screw thread with right end cap (9), and the second control piston (6) is coordinated by gap to be arranged on
In right end cap (9), main piston (4) is dual stage shoulder structure, and main piston (4) is coordinated by gap to be arranged in valve body (7), main piston
Shoulder the closed cavity in valve body is divided into five separate chambers of m, n, o, p and q, m chambers and Y control mouths communicate, q chambers and X control
Donsole is communicated, and n chambers are connected with p chambers by the centre bore on main piston, n chambers and p chambers by the aperture of valve body all the time with T mouth phases
Logical, P leads to pressure oil, and T mouths are servomotor oil return opening, and P mouths connect pressurized tank, and A mouths are main line control chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720558794.2U CN206943108U (en) | 2017-05-18 | 2017-05-18 | Power station water inlet valve servo control hydraulic operated valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720558794.2U CN206943108U (en) | 2017-05-18 | 2017-05-18 | Power station water inlet valve servo control hydraulic operated valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206943108U true CN206943108U (en) | 2018-01-30 |
Family
ID=61361731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720558794.2U Expired - Fee Related CN206943108U (en) | 2017-05-18 | 2017-05-18 | Power station water inlet valve servo control hydraulic operated valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206943108U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114439799A (en) * | 2021-12-21 | 2022-05-06 | 四川大唐国际甘孜水电开发有限公司 | Hydraulic valve block oil inlet flow adjusting device based on inland hydropower station |
-
2017
- 2017-05-18 CN CN201720558794.2U patent/CN206943108U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114439799A (en) * | 2021-12-21 | 2022-05-06 | 四川大唐国际甘孜水电开发有限公司 | Hydraulic valve block oil inlet flow adjusting device based on inland hydropower station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180130 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |