CN203421240U - Y type pilot-operated type water-attack pressure release valve system - Google Patents
Y type pilot-operated type water-attack pressure release valve system Download PDFInfo
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- CN203421240U CN203421240U CN201320430369.7U CN201320430369U CN203421240U CN 203421240 U CN203421240 U CN 203421240U CN 201320430369 U CN201320430369 U CN 201320430369U CN 203421240 U CN203421240 U CN 203421240U
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- 238000007789 sealing Methods 0.000 claims abstract description 28
- 238000011144 upstream manufacturing Methods 0.000 claims description 10
- 230000009471 action Effects 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000006837 decompression Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
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- 238000005086 pumping Methods 0.000 description 1
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Abstract
The utility model relates to a Y type pilot-operated type water-attack pressure release valve system. The Y type pilot-operated type water-attack pressure release valve system comprises a main valve and a pilot valve, wherein the main valve is composed of a valve body, a valve bush, a valve element, a valve seat and a valve cover, a control cavity is formed by the valve element, the valve bush and the valve cover, the included angle between the axis of the control cavity and a passageway of the main valve is 45 degrees, and the valve element is guided by the valve bush and is sealed through an O-shaped rubber ring. According to the Y type pilot-operated type water-attack pressure release valve system, main valve sealing is formed by the valve element and the valve seat provided with the O-shaped rubber ring under the action of a main valve spring, the diameter of the position of the main valve sealing is smaller than the sealing diameter of the valve element of the main valve and the sealing diameter of the valve bush, the pilot valve is a two-position three-way or two-position two-way spring loading type pilot valve, a sensitive element of the pilot valve can directly sense pipeline pressure at the position of an inlet, and the pipeline pressure is compared with a set spring force to determine whether the pilot valve acts or not. The Y type pilot-operated type water-attack pressure release valve system solves the technical problems that an existing water-attack pressure release valve is small in discharging volume, large in noise and inconvenient to maintain. Due to the fact that the main valve is of a Y-shaped structure, internal parts are convenient to install and dismantle, and daily maintenance is facilitated.
Description
Technical field
The utility model relates to a kind of Decompression valves of protecting long distance pipeline safety, is specifically related to a kind of Y type surge reliever.
Background technique
In long distance pipeline course of conveying, the situations such as unexpected termination of pumping or valve emergency shutdown can cause water attack, may cause the local superpressure of pipeline and cause the security incidents such as pipeline breaking, device damage.For the superpressure that effectively prevents that water attack from causing, guarantee long distance pipeline safe operation, bleed-off system is set conventionally, the important composition that surge reliever is bleed-off system.While making pressure medium peak value surpass the Set pressure of surge reliever due to water attack etc. in pipeline; surge reliever is opened rapidly and medium is released; manifold pressure is reduced rapidly; after pipeline pressure is reduced to normal range (NR), surge reliever is closed automatically, thereby plays the object of protection pipeline and equipment.
The structural type of the surge reliever that at present long distance pipeline uses mainly be take angie type and axial flow as main, and angie type Decompression valves is due to structural limitations, and the amount of releasing is little, and noise is large; Axial flow Decompression valves negotiability is large, but safeguards inconvenience, need wholely from pipeline, to pull down and keep in repair, and valve core of main valve is positioned at valve inner, is not easy to directly observe its action situation.
Summary of the invention
Little in order to solve the existing surge reliever amount of releasing, noise is large, safeguard that inconvenient technical problem, the utility model provide a kind of Y type leading type surge reliever system.
Technical solution of the present utility model:
A type leading type surge reliever system, its special way is: comprise main valve 1, pilot valve 2 and flow control valve 3,
Described main valve 1 comprises valve body of main valve 16, be arranged on main valve valve component 12 and valve core of main valve 11 in valve body of main valve 16, be sleeved on the valve pocket 13 on valve core of main valve 11 and between valve core of main valve 11 and valve body of main valve 16, be arranged on valve gap 14 and main spool spring 15 on valve body of main valve 16, described valve pocket 13, valve core of main valve 11 and valve gap 14 form control chamber 6, described main spool spring 15 is positioned at control chamber 6, one end of described main spool spring 15 is fixed on valve core of main valve 11, the other end of main spool spring 15 withstands on valve gap 14, the axis of valve core of main valve 11 and main valve entrance 4, the axis of main valve outlet 5 is angle at 45 ° respectively,
Between described valve core of main valve 11 and valve pocket 13, have black box, form seal spool, form main valve sealing between described valve core of main valve 11 and main valve valve component 12, the area of described main valve sealing is less than the area of seal spool;
Described pilot valve 2 comprises spring adjusting device 25, housing 26, is positioned at successively the Regulation spring 24 of housing, valve seat 21 and rear valve base 20 before sensing element 23, pilot valve core 22, fitting seat 27, pilot valve,
Described spring adjusting device 25 is fixed on housing 27 one end, described Regulation spring 24 one end act on spring adjusting device 25, the other end acts on sensing element 23, described sensing element 23 is fixed on one end of pilot valve core 22, the other end of described pilot valve core 22 is before pilot valve between valve seat 21, rear valve base 20, described fitting seat 27 forms pressure-sensitive chamber 10 with sensing element 23, between rear valve base 20 and housing, form back cavity 7, before pilot valve, between valve seat 21, rear valve base 20, form lumen 8, before pilot valve, between valve seat 21 and fitting seat 27, form ante-chamber 9;
The ante-chamber 9 of described pilot valve is connected with main valve entrance 4 by flow control valve 3, and the lumen 8 of described pilot valve is connected with the control chamber 6 of main valve, and the back cavity 7 of pilot valve is connected with main valve outlet 5, and the pressure-sensitive chamber 10 of pilot valve is connected with the upstream of inlet pipe.
Above-mentioned main valve also comprises valve phase indicator 18 and is with graduated sleeve 19, and one end of described valve phase indicator 18 is fixed on valve core of main valve 11, on described valve phase indicator 18 the other ends, is sleeved on sleeve 19.
A type leading type surge reliever system, its special way is: comprise main valve 1, pilot valve 2 and flow control valve 3,
Described main valve 1 comprises valve body of main valve 16, be arranged on main valve valve component 12 and valve core of main valve 11 in valve body of main valve 16, be sleeved on the valve pocket 13 on valve core of main valve 11 and between valve core of main valve 11 and valve body of main valve 16, be arranged on valve gap 14 and main spool spring 15 on valve body of main valve 16, described valve pocket 13, valve core of main valve 11 and valve gap 14 form control chamber 6, described main spool spring 15 is positioned at control chamber 6, one end of described main spool spring 15 is fixed on valve core of main valve 11, the other end of main spool spring 15 withstands on valve gap 14, the axis of valve core of main valve 11 and main valve entrance 4, the axis of main valve outlet 5 is angle at 45 ° respectively,
Between described valve core of main valve 11 and valve pocket 13, have black box, form seal spool, form main valve sealing between described valve core of main valve 11 and main valve valve component 12, the area of described main valve sealing is less than the area of seal spool;
Described pilot valve 2 comprises spring adjusting device 25, housing 26, is positioned at successively the Regulation spring 24 of housing, sensing element 23, pilot valve core 22, fitting seat 27 and rear valve base 20,
Described spring adjusting device 25 is fixed on housing 27 one end, described Regulation spring 24 one end act on spring adjusting device 25, the other end acts on sensing element 23, described sensing element 23 is fixed on one end of pilot valve core 22, the other end of described pilot valve core 22 is between fitting seat 27 and rear valve base 20, described fitting seat 27 forms pressure-sensitive chamber 10 with sensing element 23, between fitting seat 27 and rear valve base 20, forms ante-chamber 9, forms back cavity 7 between rear valve base 20 and housing;
The ante-chamber 9 of pilot valve is connected with main valve entrance 4 by flow control valve 3, and the ante-chamber 9 of pilot valve is connected with the control chamber 6 of main valve, and the back cavity 7 of pilot valve is connected with main valve outlet 5, and the pressure-sensitive chamber 10 of pilot valve is connected with the upstream of inlet pipe.
Above-mentioned main valve also comprises valve phase indicator 18 and is with graduated sleeve 19, and one end of described valve phase indicator 18 is fixed on valve core of main valve 11, on described valve phase indicator 18 the other ends, is sleeved on sleeve 19.
The utility model has advantages of:
1, surge reliever described in the utility model can be opened rapidly when water attack appears in pipeline, and discharge conduit pressure is eliminated the superpressure that water attack causes, effectively protects pipeline and device security.
2, main valve adopts Y-shaped structure, and internal installation convenient disassembly, is beneficial to regular maintenance.
3, the utility model valve gap is provided with valve element position indicator, intuitively reflects the opening degree of main valve, is conducive to understand the working state of surge reliever; Valve core of main valve leads with valve pocket, and guiding is good, can guarantee that spool action is smooth and easy.
4, the utility model main valve adopts the valve base sealing structure with rubber o-ring, and sealing is reliable, is easy to dismounting and replacing, and manufacture and maintenance cost are low.Between main valve entrance and main valve control chamber, be provided with flow control valve, control the closing velocity of main valve and avoid causing secondary water attack.
Accompanying drawing explanation
Fig. 1 is embodiment's 1 of the present utility model closed condition schematic diagram.
Fig. 2 is embodiment's 1 of the present utility model opening state schematic diagram.
Fig. 3 is embodiment's 2 of the present utility model closed condition schematic diagram.
Fig. 4 is embodiment's 2 of the present utility model opening state schematic diagram.
Wherein reference character is: 1-main valve, 2-pilot valve, 3-flow control valve, 4-main valve entrance, the outlet of 5-main valve, 6-main valve control chamber, 7-pilot valve back cavity, 8-pilot valve lumen, 9-pilot valve ante-chamber, 10-pilot valve pressure-sensitive chamber, 11-valve core of main valve, 12-main valve valve component, 13-valve pocket, 14-valve gap, 15-main spool spring, 16-valve body of main valve, 17-rubber o-ring, the pointer of 18-valve phase indicator, 19-sleeve, 20-rear valve base, valve seat before 21-pilot valve, 22-pilot valve core, 23-sensing element, 24-Regulation spring, 25-spring adjusting device, 26-housing, 27-fitting seat.
Embodiment
Embodiment 1
As shown in Figure 1, be a kind of exemplifying embodiment structural representation of the present utility model, it is mainly comprised of main valve 1, pilot valve 2.
Main valve 1 comprises valve body of main valve 16, valve core of main valve 11, main valve valve component 12, valve pocket 13, valve gap 14, main spool spring 15, valve phase indicator 18 and be with graduated sleeve 19.Valve core of main valve 11, valve pocket 13 form main valve control chamber 6 with valve gap 14, the axis angle at 45 ° of valve core of main valve 11 axis and main valve entrance 4, main valve outlet 5, and main valve 1 is y-type structure.Valve core of main valve 11 leads with valve pocket 13, and adopts rubber o-ring 17 sealings (being seal spool).Under main spool spring 15 effects, form main valve sealing (referring to the patent specification that the patent No. is ZL201120549755.9) with the main valve valve component 12 with O shape circle, main valve sealing area is less than the sealing area of valve core of main valve 11 and valve pocket 13.The pointer 18 of valve phase indicator is fixedly connected with valve core of main valve 11, and the pointer 18 of valve phase indicator and the relative position between the scale on sleeve 19 directly reflect the aperture of main valve.
Pilot valve 2 is two-bit triplet selector valve, and before pilot valve core 22, pilot valve, valve seat 21, rear valve base 20, be divided into ante-chamber 9, lumen 8 and back cavity 7 by pilot valve body; Sensing element 23 forms pressure-sensitive chamber 10 with fitting seat 27, pressure-sensitive chamber 10 and ante-chamber 9, lumen 8, the equal seal isolation of back cavity 7.Sensing element 23 two ends are the hydraulic coupling in modulated spring 24 active forces and pressure-sensitive chamber 10 respectively, and both compare, and determines the pilot valve core 22 being connected with sensing element 23 action that whether commutates.By adjusting spring adjusting device 25, can change the initial compression amount of Regulation spring 24, thereby change the opening and closing pressure of pilot valve 2.
The ante-chamber 9 of pilot valve is connected with main valve entrance 4 by flow control valve 3, and the lumen 8 of pilot valve is connected with the control chamber 6 of main valve, and the back cavity 7 of pilot valve is connected with main valve outlet 5, and the pressure-sensitive chamber 10 of pilot valve is connected with the upstream of inlet pipe.
During Y type surge reliever system works of the present utility model:
As shown in Figure 1, when pipeline pressure is normal, the active force of pilot valve Regulation spring 24 overcomes the pressure-acting power in pressure-sensitive chamber 10, the spool 22 of pilot valve is closed at rear valve base 20 places, now main valve entrance 4, pilot valve ante-chamber 9, lumen 8 and main valve control chamber 6 are communicated with, the pressure of main valve entrance 4 enters main valve control chamber 6 by connecting tube and acts on valve core of main valve 11, the sealing area of valve core of main valve 11 in control chamber 6 one end is greater than the sealing area of main valve valve base sealing, medium hydraulic pressure unbalanced force makes valve core of main valve 11 be close to main valve valve component 12 together with main spool spring 15 active forces, the valve seat that forms main valve 1 is closed sealing.
As shown in Figure 2, when surge reliever entrance 4 upstreams occur surge pressure and are passed to the pressure-sensitive chamber 10 of pilot valve, the active force that the pressure-acting in pressure-sensitive chamber 10 overcomes Regulation spring 24 in the hydraulic coupling of sensing element 23 promotes sensing element 23 and pilot valve core 22 completes commutation action, pilot valve core 22 is opened at rear valve base 20 places, front valve seat 21 places close, cut off the passage of 4 of main valve control chamber 6 and main valve entrances, while making main valve control chamber 6 close with main valve outlet 5(surge reliever simultaneously, main valve outlet 5 is low-pressure region) be communicated with, medium in main valve control chamber 6 releases to main valve outlet 5, the pressure of main valve control chamber 6 reduces rapidly, under the effect of main valve entrance 4 pressure, valve core of main valve 11 is opened rapidly, inlet pressure is released through main valve outlet 5 by main valve passage.
As shown in Figure 1, when main valve entrance 4 upstream pressures are during lower than the closing pressure of pilot valve, the hydraulic coupling of the pressure-acting that the active force of pilot valve Regulation spring 24 is greater than pressure-sensitive chamber 10 on sensing element, pilot valve core 22 is closed at rear valve base 20 places, before pilot valve, valve seat 21 places open, cut off the passage of main valve outlet 5 and main valve control chamber 6, make main valve entrance 4 and 6 conductings of main valve control chamber simultaneously, the medium of main valve entrance 4 is through flow control valve 3 filling main valve control chambers 6, valve core of main valve 11 is slowly shifted to valve seat 12 under the effect of hydraulic pressure unbalanced force and main spool spring 15, finally realize main valve sealing.The aperture of adjust flux modulating valve 3 can be controlled the filling velocity of main valve control chamber 6, thereby controls the closing velocity of main valve, can avoid secondary water attack.
Embodiment 2
As shown in Figure 3, be a kind of exemplifying embodiment structural representation of the present utility model, it is mainly comprised of main valve 1, pilot valve 2.
Main valve 1 is identical with the main valve in embodiment 1.
Pilot valve 2 is 2/2-way valve, and pilot valve core 22 is divided into ante-chamber 9 and back cavity 7 with pilot valve valve seat 20 by pilot valve body, and sensing element 23 forms pressure-sensitive chamber 10 with fitting seat 27, pressure-sensitive chamber 10 and ante-chamber 9 isolation.The hydraulic coupling in sensing element 23 two ends modulated spring 24 active forces of difference and pressure-sensitive chamber 10, both compare, and determine whether the pilot valve core 22 being connected with sensing element 23 moves.Regulation spring 24 acts on sensing element, by adjusting spring regulating mechanism 25, can change the initial compression amount of Regulation spring 24, thereby changes the opening and closing pressure of pilot valve 2.Flow resistance when pilot valve 2 is opened is much smaller than the flow resistance of flow control valve 3.
The ante-chamber 9 of pilot valve 2 is connected with the control chamber 6 of main valve entrance 4 and main valve simultaneously, on the passage being connected, flow control valve 3 is set with main valve entrance 4; The back cavity 7 of pilot valve is connected with main valve outlet 5, and the pressure-sensitive chamber 10 of pilot valve is connected with the upstream of inlet pipe.
During Y type surge reliever system works of the present utility model:
As shown in Figure 3, when pipeline pressure is normal, the active force of the Regulation spring 24 of pilot valve overcomes the pressure-acting power in pressure-sensitive chamber 10, the spool 22 of pilot valve 2 is closed at valve seat 20 places, now main valve entrance 4, pilot valve ante-chamber 9 and main valve control chamber 6 are communicated with, main valve entrance 4 pressure enter main valve control chamber 6 by connecting tube, and act on main valve plug 11, the sealing area of valve core of main valve 11 in control chamber 6 one end is greater than the sealing area of main valve valve base sealing, medium hydraulic pressure unbalanced force makes valve core of main valve 11 be close to main valve valve component 12 together with main spool spring 15 active forces, the valve seat that forms main valve 1 is closed sealing.
As shown in Figure 4, when surge reliever entrance 4 upstreams occur surge pressure and are passed to the pressure-sensitive chamber 10 of pilot valve, the active force that the pressure-acting in pressure-sensitive chamber 10 overcomes Regulation spring 24 in the hydraulic coupling of sensing element 23 promotes sensing element 23 and pilot valve core 22 completes commutation action, pilot valve core 22 is opened at valve seat 20 places, when main valve control chamber 6 is closed with main valve outlet 5(surge reliever, main valve outlet 5 is low-pressure region) be communicated with, through flow control valve 3, be also communicated with main valve entrance 4 simultaneously, so the medium of main valve entrance 4 arrives main valve control chamber 6 through flow control valve 3, through pilot valve 2, flow to main valve outlet 5 again, the flow resistance during much larger than the unlatching of pilot valve 2 due to the flow resistance of flow control valve 3, so the pressure of main valve control chamber 6 reduces rapidly, under the effect of main valve entrance 4 pressure, valve core of main valve 11 is opened rapidly, inlet pressure is released through main valve outlet 5 by main valve passage.
As shown in Figure 3, when main valve entrance 4 upstream pressures are during lower than the closing pressure of pilot valve 2, the active force of pilot valve Regulation spring 24 is greater than pressure-sensitive chamber 10 media and acts on the hydraulic coupling on sensing element 23, pilot valve core 22 is closed at valve seat 20 places, cut off the passage of main valve outlet 5 and main valve control chamber 6, medium in main valve entrance 4 is through flow control valve 3 filling main valve control chambers 6, valve core of main valve 11 is slowly shifted to main valve valve component 12 under the effect of hydraulic pressure unbalanced force and main spool spring 15, finally realizes main valve sealing.The aperture of adjust flux modulating valve 3 can be controlled the filling velocity of main valve control chamber 6, thereby controls the closing velocity of main valve, can avoid secondary water attack.
Claims (4)
1. a Y type leading type surge reliever system, is characterized in that: comprise main valve (1), pilot valve (2) and flow control valve (3),
Described main valve (1) comprises valve body of main valve (16), be arranged on main valve valve component (12) and valve core of main valve (11) in valve body of main valve (16), be sleeved on valve core of main valve (11) and be positioned at the valve pocket (13) between valve core of main valve (11) and valve body of main valve (16), be arranged on valve gap (14) and main spool spring (15) on valve body of main valve (16), described valve pocket (13), valve core of main valve (11) and valve gap (14) form control chamber (6), described main spool spring (15) is positioned at control chamber (6), one end of described main spool spring (15) is fixed on valve core of main valve (11), the other end of main spool spring (15) withstands on valve gap (14), the axis of valve core of main valve (11) and main valve entrance (4), the axis of main valve outlet (5) is angle at 45 ° respectively,
Between described valve core of main valve (11) and valve pocket (13), have black box, form seal spool, form main valve sealing between described valve core of main valve (11) and main valve valve component (12), the area of described main valve sealing is less than the area of seal spool;
Described pilot valve (2) comprises spring adjusting device (25), housing (26), is positioned at successively the Regulation spring (24) of housing, valve seat (21) and rear valve base (20) before sensing element (23), pilot valve core (22), fitting seat (27), pilot valve
Described spring adjusting device (25) is fixed on housing (26) one end, described Regulation spring (24) one end acts on spring adjusting device (25), the other end acts on sensing element (23), described sensing element (23) is fixed on one end of pilot valve core (22), the other end of described pilot valve core (22) is positioned at the front valve seat (21) of pilot valve, between rear valve base (20), described fitting seat (27) forms pressure-sensitive chamber (10) with sensing element (23), between rear valve base (20) and housing, form back cavity (7), valve seat (21) before pilot valve, between rear valve base (20), form lumen (8), before pilot valve, between valve seat (21) and fitting seat (27), form ante-chamber (9),
The ante-chamber of described pilot valve (9) is connected with main valve entrance (4) by flow control valve (3), the lumen of described pilot valve (8) is connected with the control chamber (6) of main valve, the back cavity of pilot valve (7) is connected with main valve outlet (5), and the pressure-sensitive chamber (10) of pilot valve is connected with the upstream of inlet pipe.
2. Y type leading type surge reliever system according to claim 1, it is characterized in that: described main valve also comprises valve phase indicator (18) and is with graduated sleeve (19), it is upper that one end of described valve phase indicator (18) is fixed on valve core of main valve (11), on described valve phase indicator (18) the other end, is sleeved on sleeve (19).
3. a Y type leading type surge reliever system, is characterized in that: comprise main valve (1), pilot valve (2) and flow control valve (3),
Described main valve (1) comprises valve body of main valve (16), be arranged on main valve valve component (12) and valve core of main valve (11) in valve body of main valve (16), be sleeved on valve core of main valve (11) and be positioned at the valve pocket (13) between valve core of main valve (11) and valve body of main valve (16), be arranged on valve gap (14) and main spool spring (15) on valve body of main valve (16), described valve pocket (13), valve core of main valve (11) and valve gap (14) form control chamber (6), described main spool spring (15) is positioned at control chamber (6), one end of described main spool spring (15) is fixed on valve core of main valve (11), the other end of main spool spring (15) withstands on valve gap (14), the axis of valve core of main valve (11) and main valve entrance (4), the axis of main valve outlet (5) is angle at 45 ° respectively,
Between described valve core of main valve (11) and valve pocket (13), have black box, form seal spool, form main valve sealing between described valve core of main valve (11) and main valve valve component (12), the area of described main valve sealing is less than the area of seal spool;
Described pilot valve (2) comprises spring adjusting device (25), housing (26), is positioned at successively the Regulation spring (24) of housing, sensing element (23), pilot valve core (22), fitting seat (27) and rear valve base (20),
Described spring adjusting device (25) is fixed on housing (26) one end, described Regulation spring (24) one end acts on spring adjusting device (25), the other end acts on sensing element (23), described sensing element (23) is fixed on one end of pilot valve core (22), the other end of described pilot valve core (22) is positioned between fitting seat (27) and rear valve base (20), described fitting seat (27) forms pressure-sensitive chamber (10) with sensing element (23), between fitting seat (27) and rear valve base (20), form ante-chamber (9), between rear valve base (20) and housing, form back cavity (7),
The ante-chamber of pilot valve (9) is connected with main valve entrance (4) by flow control valve (3), the ante-chamber of pilot valve (9) is connected with the control chamber (6) of main valve, the back cavity of pilot valve (7) is connected with main valve outlet (5), and the pressure-sensitive chamber (10) of pilot valve is connected with the upstream of inlet pipe.
4. Y type leading type surge reliever system according to claim 3, it is characterized in that: described main valve also comprises valve phase indicator (18) and is with graduated sleeve (19), it is upper that one end of described valve phase indicator (18) is fixed on valve core of main valve (11), on described valve phase indicator (18) the other end, is sleeved on sleeve (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320430369.7U CN203421240U (en) | 2013-07-18 | 2013-07-18 | Y type pilot-operated type water-attack pressure release valve system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320430369.7U CN203421240U (en) | 2013-07-18 | 2013-07-18 | Y type pilot-operated type water-attack pressure release valve system |
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| CN203421240U true CN203421240U (en) | 2014-02-05 |
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| CN201320430369.7U Expired - Fee Related CN203421240U (en) | 2013-07-18 | 2013-07-18 | Y type pilot-operated type water-attack pressure release valve system |
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| CN112879626A (en) * | 2021-02-09 | 2021-06-01 | 国家石油天然气管网集团有限公司华南分公司 | Double-control axial-flow safe water hammer relief valve for vane motor and servo motor |
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| CN112879630A (en) * | 2021-02-09 | 2021-06-01 | 国家石油天然气管网集团有限公司华南分公司 | Servo adjustable vane motor of valve opening area directly drives Y type water hammer relief valve |
| CN112879623A (en) * | 2021-02-09 | 2021-06-01 | 国家石油天然气管网集团有限公司华南分公司 | Flow servo adjustable gear motor direct-drive pilot safety Y-shaped water attack relief valve |
| CN112879627A (en) * | 2021-02-09 | 2021-06-01 | 国家石油天然气管网集团有限公司华南分公司 | Multi-redundancy-proportion pilot-operated safety water hammer relief valve directly driven by vane motor |
| CN112879629A (en) * | 2021-02-09 | 2021-06-01 | 国家石油天然气管网集团有限公司华南分公司 | Axial flow water hammer relief valve directly driven by blade motor with servo-adjustable valve opening area |
| CN112879631A (en) * | 2021-02-09 | 2021-06-01 | 国家石油天然气管网集团有限公司华南分公司 | Electromagnetic pilot safety Y-shaped water hammer relief valve directly driven by gear motor |
| CN112943992A (en) * | 2021-02-09 | 2021-06-11 | 国家石油天然气管网集团有限公司华南分公司 | Multi-redundancy electromagnetic pilot axial flow safety type water hammer relief valve directly driven by gear motor |
| CN112984201A (en) * | 2021-02-09 | 2021-06-18 | 国家石油天然气管网集团有限公司华南分公司 | Double-control axial flow mechanical pilot type water machine pressure release valve directly driven by vane type hydraulic motor |
| CN112943992B (en) * | 2021-02-09 | 2022-12-27 | 国家石油天然气管网集团有限公司华南分公司 | Multi-redundancy electromagnetic pilot axial flow safety type water hammer relief valve directly driven by gear motor |
| CN112879633B (en) * | 2021-02-09 | 2023-01-17 | 国家石油天然气管网集团有限公司华南分公司 | Mechanical pilot type safe Y-shaped water attack relief valve directly driven by vane motor |
| CN112984201B (en) * | 2021-02-09 | 2023-01-17 | 国家石油天然气管网集团有限公司华南分公司 | Blade type hydraulic motor direct-driven double-control axial flow mechanical pilot type water hammer relief valve |
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