Water supply pressure reducing device for preventing cavitation

Abstract

The present application relates to water supply technical field, and disclose a kind of water power station water supply pressure reducing device for preventing cavitation, including: pressure control valve;Pressure display, fixedly installed in the side of pressure control valve;Filtering site is arranged in the one end of pressure control valve.Slidingly install filter plate in the inside of installation port by handheld handle, then make the gap between installation port and filter plate be reinforced and sealed by arc sealing gasket, then arc elastic rod is sleeved on the outer wall of transmission pipe, so as to be accurately set the outer wall of arc elastic rod under the action of limiting guide block, first sliding one end distance arc elastic rod, so that Z type clamping plate is rotated and enters the inside of L type clamping slot, with the continuous sliding of arc elastic rod, make Z type clamping plate and L type clamping slot be engaged connection, simultaneously make threaded guide block and threaded groove be in harmony, rotate threaded rod one, make arc elastic rod be position fixed, to achieve the purpose of quickly installing and disassembling filter plate.

Description

Technical Field

[0001] This invention relates to the field of water supply technology, specifically to a water supply pressure reduction device for hydroelectric power stations that prevents cavitation. Background Technology

[0002] In the water supply system of a hydropower station, ensuring the stable, efficient and safe transmission of water is a key link in ensuring the normal operation of the entire power station. However, the existing water supply equipment of hydropower stations faces many problems that need to be solved in actual operation. These problems not only affect the water supply efficiency, but may also damage the equipment, shorten the service life of the equipment, and increase the operation and maintenance costs.

[0003] During the water supply process of hydropower stations, cavitation is easily generated due to factors such as changes in water flow velocity and pressure. However, installing a filtration mechanism can filter impurities and particles and reduce flow velocity, thereby preventing cavitation to a certain extent. However, some traditional filtration devices require disassembling multiple parts to install or replace the filter plates, which not only consumes a lot of time and manpower, but also increases the risk of errors during the installation process. Summary of the Invention

[0004] The purpose of this invention is to provide a water supply pressure reduction device for hydropower stations that prevents cavitation, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a water supply pressure reducing device for a hydropower station to prevent cavitation, comprising: a pressure control valve; a pressure display fixedly installed on one side of the pressure control valve; a filter section disposed at one end of the pressure control valve; an opening and closing section disposed on the outer wall of the filter section; and a flow control section disposed at one end of the filter section.

[0006] Preferably, the filtration component includes: a transmission pipe connected to one end of a pressure control valve; a limiting guide block fixedly connected to the outer wall of the transmission pipe, the limiting guide blocks being symmetrically arranged; and an arc-shaped elastic rod slidably connected to the outer wall of the transmission pipe.

[0007] Preferably, the top of the transmission tube has an installation port, the bottom of the outer wall of the transmission tube has an outlet, the outlets are symmetrically arranged, the outer wall of the transmission tube has an L-shaped groove, the L-shaped grooves are equidistant around the circumference, the outer wall of the transmission tube has a threaded groove, the arc-shaped elastic rod is adapted to the limiting guide block, and the axial positioning and radial fixing of the arc-shaped elastic rod are achieved by the threaded guide block precisely engaging with the threaded groove on the inner wall of the installation port.

[0008] Preferably, a filter plate is slidably installed inside the mounting port, and an arc-shaped sealing gasket is fixedly connected to the top of the filter plate. The arc-shaped sealing gasket is adapted to the mounting port, and a handle is fixedly connected to the top of the arc-shaped sealing gasket. A threaded guide block is fixedly connected to one side of the arc-shaped elastic rod, and a threaded rod is threadedly connected to the inner wall of the threaded guide block. The threaded rod is threadedly connected to the threaded groove. After the filter plate is installed, the arc-shaped sealing gasket fills the gap between the mounting port and the filter plate through elastic deformation, forming a sealing barrier.

[0009] Preferably, a fixed seat is fixedly connected to one side of the arc-shaped elastic rod, the fixed seats are equidistantly arranged, and a rotating seat is rotatably connected between the inner sides of the fixed seats. A Z-shaped locking plate is fixedly connected to one side of the rotating seat. The Z-shaped locking plate is engaged with an L-shaped slot. The Z-shaped locking plate is adapted to the arc-shaped sealing gasket. When the arc-shaped elastic rod is slid, the Z-shaped locking plate rotates into the L-shaped slot and then slides horizontally to the end of the slot to achieve quick locking.

[0010] Preferably, the opening and closing part includes: a fixed frame, which is fixedly connected to the bottom of the outer wall of the transmission pipe; and an electric telescopic column, which is fixedly connected to the bottom of the fixed frame.

[0011] Preferably, a limiting port is provided inside the fixed frame, and the telescopic end of the electric telescopic column extends upward through the bottom of the fixed frame. A U-shaped transmission frame is fixedly connected to the telescopic end of the electric telescopic column. The U-shaped transmission frame is slidably connected inside the limiting port. A placement port is provided at the bottom of the U-shaped transmission frame. The placement ports are symmetrically arranged, and a pressure sensor is fixedly connected inside the placement port. The pressure sensor is electrically connected to the electric telescopic column. Once the pressure reaches a preset threshold, the system immediately stops driving to prevent the sealing plate from being damaged due to excessive pressure on the transmission pipe or the limiting port structure.

[0012] Preferably, a sealing plate is fixedly connected to the top of the U-shaped transmission frame, the sealing plate is adapted to the outlet, a placement groove is opened on one side of the fixed frame, the placement grooves are symmetrically arranged, an opening is opened inside the fixed frame, the opening is connected to the placement groove, a double-headed electric telescopic column is fixedly connected to the inner wall of the opening, a push plate is fixedly connected to the telescopic end of the double-headed electric telescopic column, and the push plate is adapted to the sealing plate.

[0013] Preferably, the flow control component includes: a diffuser, disposed at one end of the transmission pipe; a mounting ring one, fixedly connected to one end of the diffuser; and a mounting ring two, fixedly connected to the other end of the diffuser. The diffuser smoothly transitions the pipe diameter change, avoiding turbulence and pressure fluctuations caused by sudden expansion of the fluid. This design not only reduces the impact force of water flow on the pipe wall, reduces noise and vibration, but also effectively prevents cavitation.

[0014] Preferably, the second mounting ring is adapted to the transmission pipe, and a second threaded rod is slidably connected between the second mounting ring and the transmission pipe. The second threaded rod is equidistantly arranged around its circumference, and a nut is threaded onto the outer wall of the second threaded rod.

[0015] This invention provides a pressure-reducing device for water supply in hydropower stations to prevent cavitation. It has the following beneficial effects:

[0016] (1) The present invention allows the filter plate to be slidably installed inside the installation port by holding the handle. Then, the arc-shaped sealing gasket reinforces and seals the gap between the installation port and the filter plate. Then, the arc-shaped elastic rod is sleeved on the outer wall of the transmission pipe. Under the action of the limiting guide block, the outer wall of the arc-shaped elastic rod is precisely set. First, slide the arc-shaped elastic rod at one end, so that the Z-shaped clamping plate rotates and enters the L-shaped clamping groove. As the arc-shaped elastic rod continues to slide, the Z-shaped clamping plate and the L-shaped clamping groove are engaged and connected. At the same time, the threaded guide block is engaged with the threaded groove. Rotate the threaded rod to fix the position of the arc-shaped elastic rod, thereby achieving the purpose of quickly installing and removing the filter plate.

[0017] (2) The present invention drives an electric telescopic column to lower the U-shaped transmission frame and the sealing plate. When the pressure sensor contacts the inner wall of the limit port and the pressure reaches a certain threshold, the electric telescopic column is controlled to stop driving. At the same time, the next drive of the electric telescopic column is opposite to the previous movement direction. When the sealing plate slides out of the transmission pipe, the outlet is opened. The double-headed electric telescopic column is driven to push the push plate outward, thereby achieving the purpose of pushing and cleaning the impurities on the top of the sealing plate.

[0018] (3) In this invention, the second mounting ring is fitted with one end of the transmission pipe, then the second threaded rod is inserted, and the nut is rotated to fix the second mounting ring to the transmission pipe and make them connected. Then the first mounting ring is installed on one side of the inlet. With the movement of water flow and under the action of the diffuser, the pipe diameter is increased and the flow rate is slowed down. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0020] Figure 2 This is a front view of the present invention;

[0021] Figure 3 This is a view of the filtering part of the present invention;

[0022] Figure 4 This is a detailed view of the filtering part of the present invention;

[0023] Figure 5 This is a view of the opening and closing part of the present invention;

[0024] Figure 6This is a detailed view of the opening and closing part of the present invention;

[0025] Figure 7 This is a view of the flow control section of the present invention;

[0026] In the diagram: 1. Pressure control valve, 2. Pressure display, 3. Filter, 4. Opening / closing part, 5. Flow control part;

[0027] 311 Transmission pipe, 312 Filter plate, 313 Arc-shaped sealing gasket, 314 Handle, 315 Limiting guide block, 316 Arc-shaped elastic rod, 317 Threaded rod one, 318 Fixed seat, 319 Rotating seat, 320 Z-type clamping plate;

[0028] 411 Fixed frame, 412 Electric telescopic column, 413 U-shaped transmission frame, 414 Sealing plate, 415 Pressure sensor, 416 Double-headed electric telescopic column, 417 Push plate;

[0029] 511 Expanding tube, 512 Mounting ring one, 513 Mounting ring two, 514 Threaded rod two, 515 Nut. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] Example 1

[0034] A preferred embodiment of the anti-cavitation water supply pressure reduction device for hydroelectric power stations provided by the present invention is as follows: Figure 1-7As shown: A water supply pressure reducing device for a hydropower station to prevent cavitation includes: a pressure control valve 1; a pressure display 2, fixedly installed on one side of the pressure control valve 1; a filter part 3 disposed at one end of the pressure control valve 1; an opening and closing part 4 disposed on the outer wall of the filter part 3; and a flow control part 5 disposed at one end of the filter part 3.

[0035] The filter part 3 includes: a transmission pipe 311, which is connected to one end of the pressure control valve 1; a limiting guide block 315, which is fixedly connected to the outer wall of the transmission pipe 311 and the limiting guide blocks 315 are symmetrically arranged; and an arc-shaped elastic rod 316, which is slidably connected to the outer wall of the transmission pipe 311.

[0036] The top of the transmission pipe 311 has an installation port, the bottom of the outer wall of the transmission pipe 311 has an outlet, the outlets are symmetrically arranged, the outer wall of the transmission pipe 311 has an L-shaped groove, the L-shaped grooves are equidistant around the circumference, the outer wall of the transmission pipe 311 has a threaded groove, and the arc-shaped elastic rod 316 is adapted to the limiting guide block 315.

[0037] A filter plate 312 is slidably installed inside the installation port. An arc-shaped sealing gasket 313 is fixedly connected to the top of the filter plate 312. The arc-shaped sealing gasket 313 is adapted to the installation port. A handle 314 is fixedly connected to the top of the arc-shaped sealing gasket 313. A threaded guide block is fixedly connected to one side of the arc-shaped elastic rod 316. A threaded rod 317 is threadedly connected to the inner wall of the threaded guide block. The threaded rod 317 is threadedly connected to the threaded groove.

[0038] A fixed seat 318 is fixedly connected to one side of the arc-shaped elastic rod 316. The fixed seats 318 are equidistantly arranged. A rotating seat 319 is rotatably connected between the inner sides of the fixed seats 318. A Z-shaped clamping plate 320 is fixedly connected to one side of the rotating seat 319. The Z-shaped clamping plate 320 is engaged with the L-shaped clamping groove. The Z-shaped clamping plate 320 is adapted to the arc-shaped sealing gasket 313.

[0039] In this embodiment, the filter plate 312 is slidably installed inside the installation port by holding the handle 314. Then, the arc-shaped sealing gasket 313 reinforces and seals the gap between the installation port and the filter plate 312. Subsequently, the arc-shaped elastic rod 316 is sleeved on the outer wall of the transmission pipe 311. Under the action of the limiting guide block 315, the outer wall of the arc-shaped elastic rod 316 is precisely set. The arc-shaped elastic rod 316 is slid at one end, thereby causing the Z-shaped clamping plate 320 to rotate and enter the L-shaped clamping groove. As the arc-shaped elastic rod 316 continues to slide, the Z-shaped clamping plate 320 and the L-shaped clamping groove are engaged and connected. At the same time, the threaded guide block is engaged with the threaded groove. The threaded rod 317 is rotated to fix the position of the arc-shaped elastic rod 316, thereby achieving the purpose of quickly installing and removing the filter plate 312.

[0040] Example 2

[0041] Please see Figures 1-7 Furthermore, based on Example 1, the opening and closing part 4 includes: a fixed frame 411, which is fixedly connected to the bottom of the outer wall of the transmission pipe 311; and an electric telescopic column 412, which is fixedly connected to the bottom of the fixed frame 411.

[0042] A limiting port is provided inside the fixed frame 411. The telescopic end of the electric telescopic column 412 extends upward through the bottom of the fixed frame 411. A U-shaped transmission frame 413 is fixedly connected to the telescopic end of the electric telescopic column 412. The U-shaped transmission frame 413 is slidably connected inside the limiting port. A placement port is provided at the bottom of the U-shaped transmission frame 413. The placement ports are symmetrically arranged. A pressure sensor 415 is fixedly connected inside the placement port. The pressure sensor 415 is electrically connected to the electric telescopic column 412.

[0043] A sealing plate 414 is fixedly connected to the top of the U-shaped transmission frame 413. The sealing plate 414 is adapted to the outlet. A placement groove is opened on one side of the fixed frame 411. The placement grooves are symmetrically arranged. An opening is opened inside the fixed frame 411. The opening is connected to the placement groove. A double-headed electric telescopic column 416 is fixedly connected to the inner wall of the opening. A push plate 417 is fixedly connected to the telescopic end of the double-headed electric telescopic column 416. The push plate 417 is adapted to the sealing plate 414.

[0044] In this embodiment, by driving the electric telescopic column 412, the electric telescopic column 412 drives the U-shaped transmission frame 413 and the sealing plate 414 to descend. When the pressure sensor 415 contacts the inner wall of the limiting port and its pressure reaches a certain threshold, the electric telescopic column 412 is controlled to stop driving. At the same time, the next drive of the electric telescopic column 412 is in the opposite direction of the previous movement. When the sealing plate 414 slides out of the transmission pipe 311, the outlet is opened. The double-headed electric telescopic column 416 is driven to push the push plate 417 outward, thereby achieving the purpose of pushing and cleaning the impurities on the top of the sealing plate 414.

[0045] Example 3

[0046] Please see Figures 1-7 Furthermore, based on Example 1, the flow control part 5 includes: a diffuser 511, which is disposed at one end of the transmission tube 311; a mounting ring 1 512, which is fixedly connected to one end of the diffuser 511; and a mounting ring 2 513, which is fixedly connected to the other end of the diffuser 511.

[0047] Mounting ring 2 513 is adapted to transmission pipe 311. Threaded rod 2 514 is slidably connected between mounting ring 2 513 and transmission pipe 311. Threaded rod 2 514 is equidistantly arranged around its circumference, and nut 515 is threadedly connected to the outer wall of threaded rod 2 514.

[0048] In this embodiment, by fitting the second mounting ring 513 to one end of the transmission pipe 311, then inserting the second threaded rod 514, and rotating the nut 515, the second mounting ring 513 is fixedly connected to the transmission pipe 311 and connected. Then, the first mounting ring 512 is installed on one side of the water inlet. With the movement of water flow and under the action of the diffuser 511, the pipe diameter is increased and the flow rate is slowed down.

[0049] In use, first, hold handle 314 and slide filter plate 312 into the installation port. Then, use arc-shaped sealing gasket 313 to reinforce and seal the gap between the installation port and filter plate 312. Next, sleeve arc-shaped elastic rod 316 onto the outer wall of transmission pipe 311. Under the action of limit guide block 315, the outer wall of arc-shaped elastic rod 316 is precisely positioned. Slide one end of arc-shaped elastic rod 316 to rotate Z-shaped clamping plate 320 and enter L-shaped clamping groove. As arc-shaped elastic rod 316 continues to slide, Z-shaped clamping plate 320 engages with L-shaped clamping groove, and threaded guide block engages with threaded groove. Rotate threaded rod 317 to fix the position of arc-shaped elastic rod 316, thereby achieving the purpose of quick installation and removal of filter plate 312. Next, drive electric telescopic column 412 to drive U-shaped transmission frame 4. When the sealing plate 414 descends, and the pressure sensor 415 contacts the inner wall of the limiting port, and the pressure reaches a certain threshold, the electric telescopic column 412 is controlled to stop driving. At the same time, the next drive of the electric telescopic column 412 is in the opposite direction to the previous movement. When the sealing plate 414 slides out of the transmission pipe 311, the outlet is opened. The double-headed electric telescopic column 416 is driven to push the push plate 417 outward, thereby achieving the purpose of pushing and cleaning the impurities on the top of the sealing plate 414. Finally, the second mounting ring 513 is fitted with one end of the transmission pipe 311, and then the second threaded rod 514 is inserted. The nut 515 is rotated to fix the second mounting ring 513 to the transmission pipe 311 and connect them. Then, the first mounting ring 512 is installed on one side of the inlet. With the movement of water and under the action of the diffuser 511, the pipe diameter is increased and the flow rate is slowed down.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A water supply pressure reducing device for a hydroelectric power station to prevent cavitation, characterized in that, Includes: pressure control valve (1); A pressure display (2) is fixedly installed on one side of the pressure control valve (1); The filter section (3) is installed at one end of the pressure control valve (1); The opening and closing part (4) is provided on the outer wall of the filter part (3); A flow control section (5) is provided at one end of the filter section (3); The filter section (3) includes: The transmission pipe (311) is connected to one end of the pressure control valve (1); A limiting guide block (315) is fixedly connected to the outer wall of the transmission pipe (311), and the limiting guide blocks (315) are symmetrically arranged; An arc-shaped elastic rod (316) is slidably connected to the outer wall of the transmission tube (311); The top of the transmission tube (311) is provided with an installation port, the bottom of the outer wall of the transmission tube (311) is provided with an outlet, the outlets are symmetrically arranged, the outer wall of the transmission tube (311) is provided with a threaded groove, and the arc-shaped elastic rod (316) is adapted to the limiting guide block (315). A filter plate (312) is slidably installed inside the mounting port. An arc-shaped sealing gasket (313) is fixedly connected to the top of the filter plate (312). The arc-shaped sealing gasket (313) is adapted to the mounting port. A handle (314) is fixedly connected to the top of the arc-shaped sealing gasket (313). A threaded guide block is fixedly connected to one side of the arc-shaped elastic rod (316). A threaded rod (317) is threadedly connected to the inner wall of the threaded guide block. The threaded rod (317) is threadedly connected to the threaded groove. The opening and closing part (4) includes: The fixed frame (411) is fixedly connected to the bottom of the outer wall of the transmission pipe (311); The electric telescopic column (412) is fixedly connected to the bottom of the fixed frame (411); The fixed frame (411) has a limiting opening inside. The telescopic end of the electric telescopic column (412) extends upward through the bottom of the fixed frame (411). The telescopic end of the electric telescopic column (412) is fixedly connected to a U-shaped transmission frame (413). The U-shaped transmission frame (413) is slidably connected inside the limiting opening. A sealing plate (414) is fixedly connected to the top of the U-shaped transmission frame (413). The sealing plate (414) is adapted to the outlet. A placement groove is opened on one side of the fixed frame (411). The placement grooves are symmetrically arranged. An opening is opened inside the fixed frame (411). The opening is connected to the placement groove. A double-headed electric telescopic column (416) is fixedly connected to the inner wall of the opening. A push plate (417) is fixedly connected to the telescopic end of the double-headed electric telescopic column (416). The push plate (417) is adapted to the sealing plate (414).

2. The anti-cavitation water supply pressure reducing device for a hydropower station according to claim 1, characterized in that: The outer wall of the transmission pipe (311) is provided with an L-shaped slot, the L-shaped slot is equidistantly arranged around the circumference, a fixed seat (318) is fixedly connected to one side of the arc-shaped elastic rod (316), the fixed seats (318) are equidistantly arranged, a rotating seat (319) is rotatably connected between the inner sides of the fixed seats (318), a Z-shaped card plate (320) is fixedly connected to one side of the rotating seat (319), the Z-shaped card plate (320) is engaged with the L-shaped slot, and the Z-shaped card plate (320) is adapted to the arc-shaped sealing gasket (313).

3. The anti-cavitation water supply pressure reducing device for a hydropower station according to claim 1, characterized in that: The bottom of the U-shaped transmission frame (413) is provided with a placement port, which is symmetrically arranged. A pressure sensor (415) is fixedly connected inside the placement port, and the pressure sensor (415) is electrically connected to the electric telescopic column (412).

4. The anti-cavitation water supply pressure reducing device for a hydropower station according to claim 1, characterized in that: The flow control component (5) includes: A diffuser (511) is disposed at one end of the transmission tube (311); Mounting ring 1 (512) is fixedly connected to one end of the diffuser (511); Install ring 2 (513), which is fixedly connected to the other end of the diffuser (511).

5. A water supply pressure reducing device for preventing cavitation in a hydropower station according to claim 4, characterized in that: The mounting ring 2 (513) is adapted to the transmission pipe (311). A threaded rod 2 (514) is slidably connected between the mounting ring 2 (513) and the transmission pipe (311). The threaded rod 2 (514) is equidistantly arranged around its circumference. A nut (515) is threadedly connected to the outer wall of the threaded rod 2 (514).

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