CN220185997U - Hydraulic control device for water inlet valve - Google Patents
Hydraulic control device for water inlet valve Download PDFInfo
- Publication number
- CN220185997U CN220185997U CN202321402020.2U CN202321402020U CN220185997U CN 220185997 U CN220185997 U CN 220185997U CN 202321402020 U CN202321402020 U CN 202321402020U CN 220185997 U CN220185997 U CN 220185997U
- Authority
- CN
- China
- Prior art keywords
- valve
- cavity
- piston
- cylinder
- water inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 239000003921 oil Substances 0.000 claims description 80
- 125000006850 spacer group Chemical group 0.000 claims description 10
- 229920002379 silicone rubber Polymers 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 229920001971 elastomer Polymers 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 239000004945 silicone rubber Substances 0.000 claims description 2
- 230000003139 buffering effect Effects 0.000 abstract description 4
- 239000010720 hydraulic oil Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Abstract
The utility model discloses a hydraulic control device of a water inlet valve, which comprises a valve cylinder and a valve seat, wherein the valve cylinder is connected with the valve seat and forms a communicated cavity. The piston valve group comprises a valve rod, a piston assembly, an upper limiting piece, a spring, a lower limiting piece, a switching valve and an electromagnetic reversing valve. The limiting piece is arranged on the valve rod, so that the piston has a buffering function, and rigid collision between the piston and the oil inlet and outlet is avoided. The normally closed state of the piston valve group is stable, and the pressing force between the switch valve and the valve port is increased under the action of the spring.
Description
Technical Field
The utility model relates to a hydraulic valve, in particular to a hydraulic control device of a water inlet valve.
Background
The water inlet valve arranged between the water diversion pressure steel pipe and the water turbine volute inlet section of the hydropower station is used for normal operation of the water turbine and safety protection of the hydropower station, and is important protection equipment for operation and maintenance of the hydropower station. When the unit is overhauled or the guide vane leaks water and normally stops, the water inlet valve should be closed. Typically, the inlet valves operate at pressure equilibrium (turbine vanes are closed, inlet valve upstream and downstream side bypass pressure through bypass valve or out of working seal). In an emergency, the water inlet valve can be closed at full flow of the water turbine, namely, the water is closed. The water inlet valve is not used for adjusting the flow, and only is fully opened and fully closed.
Most of the existing water inlet valves are driven by hydraulic pressure to move a piston so that a switch valve is opened or closed, but the traditional water inlet valves have the defects, which are specifically shown in the following aspects:
1. the stroke of the piston is not provided with a buffer structure, and the piston is in direct contact with the oil inlet and outlet after moving, so that the oil inlet and outlet are easy to damage.
2. The normally closed state of the piston is achieved by the pressure of water pressure to the switch valve, but the mode is easy to loose and easy to cause water leakage.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model aims to solve the technical problems of providing a hydraulic control device for a water inlet valve, and the hydraulic control device is designed for the purposes of: firstly, the piston has the buffer function, secondly, the normally closed state of the piston valve group is stable.
In order to solve the technical problems, the utility model is realized by the following scheme: the utility model relates to a hydraulic control device of a water inlet valve, which comprises a valve cylinder and a valve seat, wherein the valve cylinder is connected with the valve seat and forms a communicated cavity, the communicated cavity comprises a first cavity arranged in the valve cylinder and a second cavity arranged in the valve seat, the side of the second cavity is connected with a water inlet pipe, the hydraulic control device of the water inlet valve also comprises a piston valve group for controlling the on-off of the valve seat, one part of the piston valve group is positioned in the first cavity, the other part of the piston valve group is positioned in the second cavity, the top of the valve cylinder is provided with a first oil way interface, and the side part of the lower area of the valve cylinder is provided with a second oil way interface;
the piston valve group includes:
the valve rod is arranged in the first cavity, the other section is arranged in the second cavity, a flange with a plurality of sealing rings is arranged at a communication hole of the first cavity and the second cavity, and the valve rod penetrates through the flange and is attached to the sealing rings, so that the first cavity and the second cavity are separated;
the piston assembly is fixed on the valve rod and arranged in the first cavity, the piston assembly separates the first cavity from the upper cavity and the lower cavity, the first oil way interface is communicated with the upper cavity, and the second oil way interface is communicated with the lower cavity;
an upper limiter fixed to the valve stem and located in the upper cavity;
one end of the spring is abutted against the upper limiting piece, and the other end of the spring is abutted against the upper wall of the upper cavity;
the lower limiting piece is fixed on the valve rod and is positioned in the lower cavity;
a switching valve fixed on the valve rod, wherein the switching valve can close the lower opening of the second chamber after descending;
the electromagnetic reversing valve is connected with the first oil way interface through a first oil way, is connected with the second oil way interface through a second oil way, is also connected with the oil tank through an oil inlet pipe and is connected with the oil tank through an oil return pipe, and a filter is arranged on the oil return pipe.
Further, the valve cylinder comprises a cylinder main body, an upper cylinder connected with the upper end of the cylinder main body and a lower cylinder connected with the lower end of the cylinder main body, and waterproof rubber rings are arranged at the joints between the cylinder main body and the upper cylinder and between the cylinder main body and the lower cylinder respectively.
Further, the piston assembly comprises a piston and a spacer ring, a circle of mounting groove is formed in the outer diameter of the piston, the spacer ring is sleeved on the mounting groove, and the spacer ring is attached to the inner wall of the valve cylinder.
Further, the upper limiting piece is of a cylinder structure with an open circular groove, and the outer end of the upper limiting piece is higher than the end part of the valve rod.
Further, the upper limiting piece is a silicon rubber piece, and a plurality of first through holes are distributed in the circular groove wall surface ring array.
Further, the lower limiting piece is of a cylinder structure with an open circular groove.
Furthermore, the lower limiting piece is a silicon rubber piece, and a plurality of second through holes are distributed in the circular groove wall surface ring array.
Compared with the prior art, the utility model has the beneficial effects that:
1. the limiting piece is arranged on the valve rod, so that the piston has a buffering function, and rigid collision between the piston and the oil inlet and outlet is avoided.
2. The normally closed state of the piston valve group is stable, and the pressing force between the switch valve and the valve port is increased under the action of the spring.
Drawings
FIG. 1 is a diagram showing the state of oil inlet of the lower cavity of the hydraulic control device of the water inlet valve.
Fig. 2 is a diagram showing the state of oil outlet from the lower cavity of the hydraulic control device of the water inlet valve.
The reference numerals in the drawings: the valve comprises a valve cylinder 1, an upper limiting piece 2, a piston 3, a spacer ring 4, a lower limiting piece 5, a second oil way connector 6, a valve seat 7, a switching valve 8, a water inlet pipe 9, an oil tank 10, an electromagnetic directional valve 11, a waterproof rubber ring 12, a valve rod 13, a first oil way 14, a spring 15, a first oil way connector 16, a second oil way 17, a filter 18, a flange 19 and a sealing ring 20.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described in the following with reference to the drawings in the embodiments of the present utility model, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, and thus the protection scope of the present utility model is more clearly and clearly defined. It should be apparent that the described embodiments of the utility model are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Example 1: the specific structure of the utility model is as follows:
referring to fig. 1-2, the hydraulic control device for a water inlet valve of the present utility model includes a valve cylinder 1 and a valve seat 7, wherein the valve cylinder 1 is connected with the valve seat 7 and forms a communicated chamber, the communicated chamber includes a first chamber disposed in the valve cylinder 1 and a second chamber disposed in the valve seat, a water inlet pipe 9 is connected to a side of the second chamber, the hydraulic control device for a water inlet valve further includes a piston valve group for controlling on-off of the valve seat 7, a part of the piston valve group is disposed in the first chamber, another part of the piston valve group is disposed in the second chamber, a first oil path interface 16 is disposed at a top of the valve cylinder 1, and a second oil path interface 6 is disposed at a side of a lower region of the valve cylinder 1;
the piston valve group includes:
a valve rod 13, one section is positioned in the first chamber, the other section is positioned in the second chamber, a flange 19 with a plurality of sealing rings 20 is arranged at the communication holes of the first chamber and the second chamber, and the valve rod 13 passes through the flange and is attached to the sealing rings 20, so that the first chamber and the second chamber are separated;
the piston assembly is fixed on the valve rod 13, and is arranged in the first cavity, the piston assembly separates the first cavity into an upper cavity and a lower cavity which are not communicated, the first oil way interface 16 is communicated with the upper cavity, and the second oil way interface 6 is communicated with the lower cavity;
an upper limiter 2 fixed to the valve stem 13 and located in the upper chamber;
a spring 15, one end of which abuts against the upper limiting member 2, and the other end of which abuts against the upper wall of the upper chamber;
a lower limiter 5 fixed to the valve stem 13 and located in the lower chamber;
an on-off valve 8 fixed to the valve rod 13, the on-off valve 8 being capable of closing a lower port of the second chamber after being lowered;
the electromagnetic directional valve 11, the electromagnetic directional valve 11 connects the said first oil way interface 16 through the first oil way 14, it connects the said second oil way interface 6 through the second oil way 17, it connects the oil tank 10 through the oil inlet pipe, connect the oil tank 10 through the oil return pipe, install the filter 18 on the oil return pipe.
A preferred technical scheme of the embodiment is as follows: the valve cylinder 1 comprises a cylinder main body, an upper cylinder connected with the upper end of the cylinder main body and a lower cylinder connected with the lower end of the cylinder main body, wherein a waterproof rubber ring 12 is arranged at the joint between the cylinder main body and the upper cylinder and between the cylinder main body and the lower cylinder respectively.
A preferred technical scheme of the embodiment is as follows: the piston assembly comprises a piston 3 and a spacer ring 4, wherein a circle of mounting groove is formed in the outer diameter of the piston 3, the spacer ring 4 is sleeved on the mounting groove, and the spacer ring 4 is attached to the inner wall of the valve cylinder 1.
A preferred technical scheme of the embodiment is as follows: the upper limiting piece 2 is in a cylinder structure with an open circular groove, and the outer end of the upper limiting piece is higher than the end part of the valve rod 13.
A preferred technical scheme of the embodiment is as follows: the upper limiting piece 2 is a silicon rubber piece, and a plurality of first through holes are distributed on the circular groove wall surface ring array.
A preferred technical scheme of the embodiment is as follows: the lower limiting piece 5 is of a cylinder structure with an open circular groove.
A preferred technical scheme of the embodiment is as follows: the lower limiting piece 5 is a silicon rubber piece, and a plurality of second through holes are distributed on the circular groove wall surface ring array.
Example 2:
the following is the working principle of the hydraulic control device of the water inlet valve:
as shown in FIG. 1, FIG. 1 is a diagram showing the state of oil inlet of the lower cavity of the hydraulic control device of the water inlet valve of the present utility model. In fig. 1, the point P and the point B of the electromagnetic directional valve 11 are connected to communicate the second oil passage 17 with the oil intake pipe, and the point a and the point T of the electromagnetic directional valve 11 are connected to communicate the first oil passage 14 with the oil return pipe.
After the oil pump works, hydraulic oil is fed into the lower cavity through the second oil way 17 and the second oil way connector 6, the lower cavity enables the piston valve group to rise upwards through oil pressure, the valve port is opened, water enters from the water inlet pipe 9, passes through the second cavity and flows out from the valve port. The hydraulic oil in the upper cavity is discharged through the first oil path interface 16 and the first oil path 14 and is sent to an oil return pipe, a filter 18 is arranged on the oil return pipe, and the hydraulic oil in the upper cavity flows back to the oil tank 10 after being filtered.
After the piston valve group rises upwards, the upper limiting piece 2 on the piston valve group bumps against the top wall of the upper cavity, and as the upper limiting piece 2 is made of silicone rubber, the upper limiting piece has a certain buffering effect and prevents the valve rod 13 from rigidly bumping against the first oil way interface 16. During the valve stem ascent, the spring 15 compresses.
As shown in fig. 2, fig. 2 is a diagram showing the state of oil outlet from the lower cavity of the hydraulic control device of the water inlet valve of the present utility model. The electromagnetic directional valve 11 connects the point a with the point P and the point B with the point T, at this time, the oil inlet pipe communicates with the first oil passage 14, and the oil return pipe communicates with the second oil passage 17.
After the oil pump works, hydraulic oil enters the upper cavity through the oil inlet pipe, the first oil way 14 and the first oil way interface 16. And the hydraulic oil in the lower cavity flows back to the oil tank through the second oil path interface 6, the second oil path 17 and the oil return pipe, and the filter 18 in the oil return pipe filters the passing hydraulic oil. At this time, the piston valve group is pressed downwards, the spring 13 is restored, and the spring 13 is still in a compressed state after being restored.
The oil pump is powered off, and the spring 13 applies elasticity to the piston valve group and the water pressure in the second chamber acts on the piston valve group, so that the switch valve abuts against the valve port, and the purpose of normally closing the valve port is achieved.
Similarly, the lower limiting piece 5 is made of silicon rubber, and the lower limiting piece 5 prevents the rigidity of the piston and the inner wall of the valve cylinder 1.
In summary, the limiting piece is arranged on the valve rod, so that the piston has a buffering function, and rigid collision between the piston and the oil inlet and outlet is avoided. The normally closed state of the piston valve group is stable, and the pressing force between the switch valve and the valve port is increased under the action of the spring.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present utility model or directly or indirectly applied to other related technical fields are included in the scope of the utility model.
Claims (7)
1. The utility model provides a water inlet valve hydraulic control device, includes valve jar (1), disk seat (7), valve jar (1) connect disk seat (7) and form the cavity of intercommunication, this cavity of intercommunication is including locating first cavity and the second cavity of locating in valve jar (1) in the disk seat, second cavity side is connected with inlet tube (9), water inlet valve hydraulic control device still includes the control disk seat (7) break-make's piston valves, this piston valves part is in first cavity, another part is in second cavity, characterized in that, open at the top of valve jar (1) has first oil circuit interface (16), and open in its lower part region lateral part has second oil circuit interface (6);
the piston valve group includes:
a valve rod (13), one section of which is positioned in the first cavity, the other section of which is positioned in the second cavity, a flange (19) with a plurality of sealing rings (20) is arranged at a communication hole of the first cavity and the second cavity, and the valve rod (13) passes through the flange and is attached to the sealing rings (20), so that the first cavity and the second cavity are separated;
the piston assembly is fixed on the valve rod (13), the piston assembly is arranged in the first cavity and separates the first cavity into an upper cavity and a lower cavity which are not communicated, the first oil way interface (16) is communicated with the upper cavity, and the second oil way interface (6) is communicated with the lower cavity;
an upper limiter (2) fixed to the valve stem (13) and located in the upper chamber;
a spring (15) with one end abutting against the upper limiting piece (2) and the other end abutting against the upper wall of the upper cavity;
a lower limiter (5) fixed to the valve stem (13) and located in the lower chamber;
an on-off valve (8) fixed to the valve rod (13), the on-off valve (8) being capable of closing the lower port of the second chamber after lowering;
the electromagnetic directional valve (11), this electromagnetic directional valve (11) is through first oil circuit (14) connect first oil circuit interface (16), it is through second oil circuit (17) connect second oil circuit interface (6), it is still through advancing oil pipe connection oil tank (10), through returning oil pipe connection oil tank (10), install filter (18) on returning oil pipe.
2. The water inlet valve hydraulic control device according to claim 1, wherein the valve cylinder (1) comprises a cylinder main body, an upper cylinder connected with the upper end of the cylinder main body and a lower cylinder connected with the lower end of the cylinder main body, and a waterproof rubber ring (12) is arranged at the connection part between the cylinder main body and the upper cylinder and the lower cylinder respectively.
3. The hydraulic control device of the water inlet valve according to claim 1, wherein the piston assembly comprises a piston (3) and a spacer ring (4), a circle of mounting groove is formed in the outer diameter of the piston (3), the spacer ring (4) is sleeved in the mounting groove, and the spacer ring (4) is attached to the inner wall of the valve cylinder (1).
4. A hydraulic control device for a water inlet valve according to claim 1, characterized in that the upper limiting member (2) is of a cylindrical structure with an open circular groove, the outer end of which is higher than the end of the valve stem (13).
5. The hydraulic control device for a water inlet valve according to claim 4, wherein the upper limiting member (2) is a silicone rubber member, and a plurality of first through holes are distributed in a circular groove wall surface ring array.
6. A hydraulic control device for a water inlet valve according to claim 1, characterized in that the lower limiting member (5) is a cylinder structure with an open circular groove.
7. The hydraulic control device of the water inlet valve according to claim 6, wherein the lower limiting piece (5) is a silicon rubber piece, and a plurality of second through holes are distributed on the circular groove wall surface ring array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321402020.2U CN220185997U (en) | 2023-06-02 | 2023-06-02 | Hydraulic control device for water inlet valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321402020.2U CN220185997U (en) | 2023-06-02 | 2023-06-02 | Hydraulic control device for water inlet valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220185997U true CN220185997U (en) | 2023-12-15 |
Family
ID=89102921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321402020.2U Active CN220185997U (en) | 2023-06-02 | 2023-06-02 | Hydraulic control device for water inlet valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220185997U (en) |
-
2023
- 2023-06-02 CN CN202321402020.2U patent/CN220185997U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108105420B (en) | High-pressure water pump outlet control valve | |
| CN220185997U (en) | Hydraulic control device for water inlet valve | |
| CN109838366B (en) | Diaphragm booster pump with switch and protective adjusting structure | |
| CN106678374B (en) | A kind of low water drag hydraulic operated valve | |
| CN209540133U (en) | A kind of double membrane configurations hold pressure pressure release control pilot valve | |
| CN217632894U (en) | Mining emulsion plunger pump | |
| CN2531203Y (en) | Water-hammer arresting non-return valve | |
| CN201982674U (en) | Pneumatic piston type on/off valve | |
| CN210461811U (en) | Adjustable self-pressure-relief silencing check valve | |
| CN108662208B (en) | Hydraulic control valve with symmetrical structure | |
| CN209539385U (en) | A kind of liquid sucking-discharging structure, emulsion pump and hydraulic system | |
| CN104747763A (en) | Current limiting check valve | |
| CN101109331A (en) | Accelerograph control system of high-pressure cleaning machine | |
| CN112664659A (en) | Cut-off valve | |
| CN107387786B (en) | Multifunctional pressure/flow control valve with good sealing performance and operation method thereof | |
| CN219911341U (en) | Protective differential combination valve | |
| CN213117592U (en) | Check valve assembly for high-pressure pump | |
| CN215673658U (en) | Water pump control valve | |
| CN218913848U (en) | Quick draining decompression type backflow preventer | |
| CN219198220U (en) | Two-position three-way pilot valve | |
| CN209943587U (en) | Harvester electrohydraulic control valve | |
| CN214887655U (en) | Oil pump block | |
| CN218565148U (en) | Airtight oil return device is used in storage tank dehydration | |
| CN108005892B (en) | Pressure limiting pump | |
| CN218152538U (en) | Pressure reducing valve with filtering function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |