CN114457762A - Guide vane type flap valve cutoff device capable of being automatically opened and closed - Google Patents
Guide vane type flap valve cutoff device capable of being automatically opened and closed Download PDFInfo
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- CN114457762A CN114457762A CN202111669409.9A CN202111669409A CN114457762A CN 114457762 A CN114457762 A CN 114457762A CN 202111669409 A CN202111669409 A CN 202111669409A CN 114457762 A CN114457762 A CN 114457762A
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- flap valve
- guide vane
- vane type
- type flap
- short shaft
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
- E02B7/40—Swinging or turning gates
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Lift Valve (AREA)
Abstract
The invention discloses an automatic opening and closing guide vane type flap valve cut-off device which comprises a cylindrical flap valve shell, a guide vane type flap valve rotating shaft fixing ring of the circular flap valve shell, a circular truncated cone-shaped connecting shell, an inner connecting fixing part and an outer connecting fixing part, a guide vane type flap valve fixing component, a guide vane type flap valve outer side rotating short shaft, a guide vane type flap valve outer side torque spring, a guide vane type flap valve inner side rotating short shaft and a guide vane type flap valve inner side torque spring, wherein the upper end and the lower end of each guide vane type flap valve are respectively connected to the guide vane type flap valve rotating shaft fixing ring of the circular flap valve shell and the guide vane type flap valve fixing component through the outer side rotating short shaft and the inner side rotating short shaft, and each guide vane type flap valve can rotate around the outer side rotating short shaft and the inner side rotating short shaft. The door body is designed to be asymmetrically arranged relative to the rotating short shaft, and clockwise door opening moment can be generated when engine water flow acts on the flap valve in a door closing state; when the water outlet flow is reduced, the counterclockwise moment generated by the moment spring is larger than the clockwise moment generated by the water flow, and the door is closed.
Description
Technical Field
The invention belongs to the technical field of hydraulic engineering, relates to a flow breaking facility for a hydraulic engineering pump station, and particularly relates to an automatic opening and closing guide vane type flap valve flow breaking device.
Background
The flap valve is used as a common flow breaking facility of a pump station and is provided with: simple structure, simple to operate, operation are reliable, characteristics such as the resistance of effluenting is little, require simultaneously to closely cooperate the unit working characteristic, flow out rapidly when starting, in time cut-off when stopping the pump.
At present, most pump station flap valves rely on water flow impact force to open the door, self gravity and reverse water pressure to close the door, and the defects of the flap valve are as follows: when the door is opened, the water flow overcomes the dead weight of the flap valve, and the door is difficult to open; when in operation, the flap valve has small opening degree and large water flow resistance; when the door is closed, the door is slapped under the dead weight of the flap door, so that the flap door and the nearby concrete structure are easily damaged due to overlarge impact force.
For many years, in order to enable the flap valve to be opened and closed timely, increase the opening angle and reduce the impact force during closing, flap valve structures and control and buffer equipment in various types are adopted at home and abroad. For the prior improved flap valve structure, the dead weight is still large, an ideal opening angle is difficult to achieve without control, considerable resistance is caused to water flow, and the problem of large impact force when the flap valve is closed is not fundamentally solved; when the control and buffer equipment is adopted, the problems of opening angle, door closing impact force and the like are solved, but the control and buffer equipment is complex and not energy-saving enough, and the equipment needs to be periodically overhauled and maintained, so that the operation and maintenance cost is high.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the guide vane type flap valve cutoff device which is simple in structure, automatic in opening and closing, smooth in water flow and convenient to operate and can be opened and closed automatically.
The technical solution for realizing the purpose of the invention is as follows:
an automatic opening and closing guide vane type flap valve cut-off device comprises a cylindrical flap valve shell, a guide vane type flap valve rotating shaft fixing ring of the circular flap valve shell, a circular truncated cone-shaped connecting shell, an internal and external connecting fixing piece, a plurality of guide vane type flap valves, a guide vane type flap valve fixing component, a guide vane type flap valve outer side rotating short shaft, a guide vane type flap valve outer side torque spring, a guide vane type flap valve inner side rotating short shaft and a guide vane type flap valve inner side torque spring,
the guide vane type flap valve fixing component and the cylindrical flap valve shell are fixedly connected through an internal and external connecting fixing part, the upper end and the lower end of each guide vane type flap valve are respectively connected to the guide vane type flap valve rotating shaft fixing ring and the guide vane type flap valve fixing component of the circular flap valve shell through an external rotating short shaft, an external torque spring, an internal rotating short shaft and an internal torque spring, the surface areas of a left part and a right part of each guide vane type flap valve divided by a connecting line of the upper end and the lower end of each guide vane type flap valve are different, each guide vane type flap valve can rotate around the external rotating short shaft and the internal rotating short shaft, in a normal state, a plurality of guide vane type flap valves are positioned at a first position and are sequentially arranged to close the cylindrical flap valve shell, when water flows to the guide vane type flap valve from the inside of the cylindrical flap valve shell, the guide vane type flap valves can rotate around the external rotating short shaft and the internal rotating short shaft to a second position to open the cylindrical flap valve shell, after water flow is discharged, the guide vane type flap valve can be restored to the first position under the action of a guide vane type flap valve outer side torque spring and a guide vane type flap valve inner side torque spring.
And the flap valve and the water outlet pipeline connecting flange are in butt joint with the pump station water outlet pipeline flange.
Furthermore, the guide vane type flap valve fixing assembly comprises a guide vane type flap valve fixing central head and a central fixing rod which are connected with each other, grooves which are matched with each other are respectively formed in the butt joint surfaces of the guide vane type flap valve fixing central head and the central fixing rod, and the inner side rotating short shaft of the guide vane type flap valve is positioned in the grooves of the guide vane type flap valve fixing central head and the central fixing rod.
Further, the guide vane type flap valve fixing center head is fixedly connected with the center fixing rod through a bolt.
Further, the cylindrical flap valve shell, the guide vane type flap valve rotating shaft fixing ring of the circular flap valve shell, the circular truncated cone-shaped connecting shell and the flap valve and water outlet pipeline connecting flange are made of steel materials and are connected into a whole in a welding mode.
The cylindrical flap valve comprises a cylindrical flap valve shell, a guide vane type flap valve rotating shaft fixing ring and an outer opening limiting head, wherein the guide vane type flap valve rotating shaft fixing ring is arranged on the inner surface of the cylindrical flap valve shell, and the outer opening limiting head and the inner stopping limiting head are arranged on the two sides of the guide vane type flap valve rotating shaft fixing ring of the cylindrical flap valve shell.
Further, the number of the guide vane type flap valves is six.
Compared with the prior art, the invention has the remarkable advantages that:
1. the automatic opening and closing device is simple in structure, comprises main components such as a cylindrical flap valve shell, a circular truncated cone-shaped connecting shell, six guide vane type flap valves symmetrically arranged along the circumference, a guide vane type flap valve fixing center head, a center fixing rod, an internal and external connecting fixing piece and the like, and can reliably and automatically complete opening and closing of the flap valve according to flow change;
2. the door body is designed to be asymmetrically arranged relative to the rotating short shaft, and clockwise door opening moment can be generated when starting water flow acts on the flap valve in a door closing state; the moment spring is arranged on the inner and outer rotating short shafts, so that the situation that the door is closed when the water outlet flow is reduced under the door opening state is ensured, the anticlockwise moment generated by the moment spring is larger than the clockwise moment generated by the water flow;
3. the opening and closing of the door are flexible: compared with the prior integral flap valve or sectional flap valve, the single flap valve body of the invention is smaller and lighter, and the unique opening and closing mode is added, thus the opening and closing are more flexible and rapid;
4. the invention has small head loss: the torque force of the torque spring can be adjusted according to the designed flow to ensure the operation in a fully open state, the flap valve device has small influence on the water flow in the fully open state, and the flap valve has a streamline and better structure, so that the water head loss is small;
5. the invention is a guide vane type flap valve with circular cross section and automatic opening and closing, which is suitable for the cutoff of a circular water outlet pipe (flow) channel of a pump station, thereby having wide application range.
Drawings
Fig. 1 is a sectional view of a guide vane type flap valve (open state);
fig. 2 is a sectional view of the gate flap (closed state);
FIG. 3 is a front view of the guide vane type door shutter (door open state);
FIG. 4 is a front view of the vane-type flapper (closed state);
FIG. 5 is a rear view of a gate flap;
FIG. 6 is a perspective view of a gate flap;
fig. 7 is a separated sectional view of a guide vane flapper fixing assembly.
Fig. 8 is a sectional view taken along line a-a in fig. 7.
Fig. 9 is a sectional view taken along line B-B in fig. 7.
In the figure: 1-cylindrical flap valve shell, 2-circular flap valve shell guide vane type flap valve rotating shaft fixing ring, 3-circular truncated cone-shaped connecting shell, 4-flap valve and water outlet pipeline connecting flange, 5-internal and external connecting fixing piece, 6-guide vane type flap valve, 7-guide vane type flap valve fixed center head, 8-center fixing rod, 9-guide vane type flap valve outer side rotating short shaft, 10-guide vane type flap valve outer side torque spring, 11-guide vane type flap valve inner side rotating short shaft, 12-guide vane type flap valve inner side torque spring, 13-external opening limiting head and 14-internal stop limiting head.
Detailed Description
Referring to fig. 1-6, an automatic opening and closing guide vane type flap valve current breaking device comprises a cylindrical flap valve shell 1, a guide vane type flap valve rotating shaft fixing ring 2 of the circular flap valve shell, a circular truncated cone-shaped connecting shell 3, an internal and external connecting fixing piece 5, a plurality of guide vane type flap valves 6, a guide vane type flap valve fixing component, a guide vane type flap valve external side rotating short shaft 9, a guide vane type flap valve external side torque spring 10, a guide vane type flap valve internal side rotating short shaft 11 and a guide vane type flap valve internal side torque spring 12,
a plurality of guide vane rotating short shaft positioning holes are uniformly arranged on a guide vane type flap valve rotating shaft fixing ring 2 of a circular flap valve shell, a guide vane type flap valve fixing component and a cylindrical flap valve shell 1 are fixedly connected through an internal and external connecting fixing part 5, the upper end and the lower end of each guide vane type flap valve 6 are respectively connected to the guide vane type flap valve rotating shaft fixing ring 2 of the circular flap valve shell and the guide vane type flap valve fixing component through an external rotating short shaft 9, an external torque spring 10, an internal rotating short shaft 11 and an internal torque spring 12, the surface areas of a left part and a right part of each guide vane type flap valve 6 divided by a connecting line of the upper end and the lower end of each guide vane type flap valve 6 are different (as shown in figure 6), each guide vane type flap valve 6 can rotate around the external rotating short shaft 9 and the internal rotating short shaft 11, under a normal state, a plurality of guide vane type flap valves 6 are positioned at a first position and are sequentially arranged to close the cylindrical flap valve shell 1 (as shown in figure 2), 4) when water flows from the inside of the cylindrical flap shell 1 to the guide vane flap 6, the guide vane flap 6 can rotate to the second position around the outer rotation short shaft 9 and the inner rotation short shaft 11 so as to open the cylindrical flap shell 1 (as shown in fig. 1 and 3), and the guide vane flap 6 can be restored to the first position under the action of the guide vane flap outer side torsion spring 10 and the guide vane flap inner side torsion spring 12 after the water flows are discharged.
Preferably, the device further comprises a flap valve and water outlet pipeline connecting flange 4, and the flap valve and water outlet pipeline connecting flange 4 is in butt joint with a pump station water outlet pipeline flange and is connected with the pump station water outlet pipeline flange through bolts.
Preferably, as shown in fig. 7-9, the guide vane type flap valve fixing assembly includes a guide vane type flap valve fixing central head 7 and a central fixing rod 8 which are connected to each other, the abutting surfaces of the guide vane type flap valve fixing central head 7 and the central fixing rod 8 are respectively provided with mutually matched grooves, and the guide vane type flap valve inner side rotation short shaft 11 is located in the grooves of the guide vane type flap valve fixing central head 7 and the central fixing rod 8.
Preferably, the guide vane type flap valve fixing center head 7 is fixedly connected with the center fixing rod 8 through a bolt, the front end part of the guide vane fixing center head 7 adopts a conical water guide body with a good water guide effect, and the center fixing rod 8 is connected with the cylindrical flap valve shell 1 through the internal and external connecting fixing parts 5 in a welding mode.
Preferably, the cylindrical flap valve shell 1, the guide vane type flap valve rotating shaft fixing ring 2 of the circular flap valve shell, the circular truncated cone-shaped connecting shell 3 and the flap valve and water outlet pipeline connecting flange 4 are made of steel materials and are connected into a whole in a welding mode to form an external structure of the guide vane type flap valve flow cutoff device.
Preferably, the racket door further comprises an external opening limiting head 13 and an internal stopping limiting head 14, wherein the external opening limiting head 13 and the internal stopping limiting head 14 are arranged on the inner surface of the cylindrical racket door shell 1 and are positioned at two sides of the guide vane type racket door rotating shaft fixing ring 2 of the circular racket door shell.
Preferably, said guide vane flaps 6 are six in number.
When the flapper fixed center head 7 and the center fixing rod 8 are not connected, the guide vane flapper 6 installs the outer rotary short shaft 9 and the outer torque spring 10 in the guide vane flapper rotating shaft fixing ring 2 of the circular flapper shell, the inner rotary short shaft 11 and the inner torque spring 12 are installed in the groove at the front end of the center fixing rod 8, and finally, the guide vane flapper fixed center head 7 and the center fixing rod 8 are connected and fixed by bolts.
When the flap valve rotates 90 degrees from a closed state and is opened to a maximum position (namely the guide vane direction is along the water flow direction), the flap valve is limited by the outward opening limiting head 13; when the water pump is stopped, the water outlet flow is gradually reduced, so that the water flow impact force is reduced, the clockwise moment is reduced, the guide vane type flap valve F gradually rotates to a closed door state under the action of the moment spring, and the stop limiting head 14 is used for limiting.
In order to prevent the water leakage of the gate when the door is closed, a thin rubber water stop layer is plated on the edge of the periphery of the guide vane type gate, so that the guide vane type gate and the periphery are sealed and do not leak water when the door is closed.
The door body structure of the guide vane type flap valve capable of being automatically opened and closed is arranged in an asymmetric mode (namely, each flap valve is arranged in an asymmetric state relative to a rotating shaft), and clockwise moment is generated under the impact action of water flow when the flap valve is in a door closing state, namely, door opening force is generated; the flap valve is provided with the moment spring on the rotating short shaft, so that the flap valve is ensured to be closed when the counterclockwise moment generated by the moment spring is larger than the clockwise moment generated by water flow when the water flow is reduced under the door opening state.
The operation method of the flap valve comprises the following steps:
step 1: when the pump station starts to discharge, when water flows act on asymmetric blades of the flap valve through the water outlet pipeline, clockwise rotation torque is generated to open the flap valve, and the door body is finally opened to be parallel to the water flows along with the increase of the flow velocity.
Step 2: when the pump station is stopped to cut off the flow, the flap valve is closed under the action of the counterclockwise moment of the torque spring and the like when the water flow is in a gradually reduced state, and the door body is finally in a fully closed state along with the reduction of the flow speed.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. An automatic opening and closing guide vane type flap valve flow cutoff device is characterized in that,
comprises a cylindrical flap valve shell (1), a guide vane type flap valve rotating shaft fixing ring (2) of the circular flap valve shell, a circular truncated cone-shaped connecting shell (3), an internal and external connecting fixing piece (5), a plurality of guide vane type flap valves (6), a guide vane type flap valve fixing component, a guide vane type flap valve outer side rotating short shaft (9), a guide vane type flap valve outer side torque spring (10), a guide vane type flap valve inner side rotating short shaft (11) and a guide vane type flap valve inner side torque spring (12),
the guide vane type flap valve fixing component is fixedly connected with the cylindrical flap valve shell (1) through an internal and external connecting fixing part (5), the upper end and the lower end of each guide vane type flap valve (6) are respectively connected with the guide vane type flap valve rotating shaft fixing ring (2) and the guide vane type flap valve fixing component through an external rotating short shaft (9), an external torque spring (10), an internal rotating short shaft (11) and an internal torque spring (12), the surface areas of the left part and the right part of each guide vane type flap valve (6) divided by a connecting line at the upper end and the lower end of each guide vane type flap valve are different, each guide vane type flap valve (6) can rotate around the external rotating short shaft (9) and the internal rotating short shaft (11), under a normal state, a plurality of guide vane type flap valves (6) are positioned at a first position and are sequentially arranged among each other so as to close the cylindrical flap valve shell (1), when water flows from the cylindrical flap valve shell (1) to the guide vane type flap valves (6), the guide vane type flap valve (6) can rotate to a second position around the outer rotation short shaft (9) and the inner rotation short shaft (11) so as to open the cylindrical flap valve shell (1), and the guide vane type flap valve (6) can restore to the first position under the action of the guide vane type flap valve outer side torsion spring (10) and the guide vane type flap valve inner side torsion spring (12) after water flow is discharged.
2. The automatic opening and closing guide vane flapper flow breaking device according to claim 1,
the device also comprises a flap valve and water outlet pipeline connecting flange (4), wherein the flap valve and water outlet pipeline connecting flange (4) is in butt joint with a pump station water outlet pipeline flange.
3. The automatic opening and closing guide vane flapper flow breaking device according to claim 1,
the guide vane type flap valve fixing assembly comprises a guide vane type flap valve fixing central head (7) and a central fixing rod (8) which are connected with each other, grooves which are matched with each other are respectively formed in the butt joint surfaces of the guide vane type flap valve fixing central head (7) and the central fixing rod (8), and the rotary short shaft (11) on the inner side of the guide vane type flap valve is located in the grooves of the guide vane type flap valve fixing central head (7) and the central fixing rod (8).
4. The automatic opening and closing guide vane flapper flow breaking device of claim 3,
the guide vane type flap valve fixing central head (7) is fixedly connected with the central fixing rod (8) through a bolt.
5. The automatically opening and closing guide vane flapper flow breaking device according to claim 2,
the cylindrical flap valve shell (1), the guide vane type flap valve rotating shaft fixing ring (2) of the circular flap valve shell, the circular truncated cone-shaped connecting shell (3) and the flap valve and water outlet pipeline connecting flange (4) are made of steel and are connected into a whole in a welding mode.
6. The automatic opening and closing guide vane flapper flow breaking device according to any one of claims 1 to 5,
the flap valve is characterized by further comprising an outward opening limiting head (13) and an inward stopping limiting head (14), wherein the outward opening limiting head (13) and the inward stopping limiting head (14) are arranged on the inner surface of the cylindrical flap valve shell (1) and located on two sides of the circular flap valve shell guide vane type flap valve rotating shaft fixing ring (2).
7. The automatic opening and closing guide vane flapper flow breaking device according to claim 6, wherein the number of the guide vane flapper valves (6) is six.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111669409.9A CN114457762B (en) | 2021-12-30 | 2021-12-30 | Automatic opening and closing guide vane type flap valve and flow breaking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111669409.9A CN114457762B (en) | 2021-12-30 | 2021-12-30 | Automatic opening and closing guide vane type flap valve and flow breaking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114457762A true CN114457762A (en) | 2022-05-10 |
| CN114457762B CN114457762B (en) | 2023-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111669409.9A Active CN114457762B (en) | 2021-12-30 | 2021-12-30 | Automatic opening and closing guide vane type flap valve and flow breaking device |
Country Status (1)
| Country | Link |
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| CN (1) | CN114457762B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB532241A (en) * | 1939-05-18 | 1941-01-21 | Baker Ham & Co Ltd | Improvements in or connected with non-return valves for liquids |
| CN109056990A (en) * | 2018-09-10 | 2018-12-21 | 华南泵业有限公司 | Integration pump lock station and application |
| CN112253488A (en) * | 2020-10-16 | 2021-01-22 | 扬州大学 | Novel two-stage flexible flap valve device suitable for bidirectional pump station and operation method thereof |
| CN113699950A (en) * | 2021-09-10 | 2021-11-26 | 扬州大学 | Horizontal pulling type three-stage flap valve and operation method thereof |
| CN214994305U (en) * | 2021-06-04 | 2021-12-03 | 高月忠 | Drainage device for reservoir management |
-
2021
- 2021-12-30 CN CN202111669409.9A patent/CN114457762B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB532241A (en) * | 1939-05-18 | 1941-01-21 | Baker Ham & Co Ltd | Improvements in or connected with non-return valves for liquids |
| CN109056990A (en) * | 2018-09-10 | 2018-12-21 | 华南泵业有限公司 | Integration pump lock station and application |
| CN112253488A (en) * | 2020-10-16 | 2021-01-22 | 扬州大学 | Novel two-stage flexible flap valve device suitable for bidirectional pump station and operation method thereof |
| CN214994305U (en) * | 2021-06-04 | 2021-12-03 | 高月忠 | Drainage device for reservoir management |
| CN113699950A (en) * | 2021-09-10 | 2021-11-26 | 扬州大学 | Horizontal pulling type three-stage flap valve and operation method thereof |
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| Publication number | Publication date |
|---|---|
| CN114457762B (en) | 2023-05-16 |
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