Pressure relief pond

Abstract

The present invention relates to a pressure-reducing pool, belonging to the technical field of pressure reduction of water diversion and conveyance pipelines. The pressure-reducing pool includes a pool body, a water inlet pipe and a water outlet pipe. A float valve is arranged on the water inlet pipe, and the float valve is used to open and close the water outlet of the water inlet pipe. A partition member is also arranged in the pressure-reducing pool. The partition member divides the space in the pressure-reducing pool into an energy dissipation pool and a water outlet pool. A through hole communicating the energy dissipation pool and the water outlet pool is arranged on the partition member. The setting position of the water outlet of the water inlet pipe is adapted to the position of the energy dissipation pool. The float of the float valve is located in the water outlet pool, and the water outlet pipe is communicated with the water outlet pool; when the float valve is closed, it corresponds to the highest limit water level line of the water outlet pool, and the height of the partition member in the vertical direction is not lower than the highest limit water level line; when the float valve is fully opened, it corresponds to the lowest limit water level line of the water outlet pool, and the highest point of the inner wall of the through hole in the vertical direction is not higher than the lowest limit water level line. The device of the present invention can reduce the risk of water hammer damaging the float valve.

Description

Technical Field

[0001] The present invention relates to a pressure reducing pool, belonging to the technical field of pressure reduction of water diversion and conveyance pipelines. Background Art

[0002] The remarkable features of rural drinking water safety projects in the southwestern mountainous areas are small-scale project construction, scattered residence of villagers, poor water source conditions, and the need for long-distance water conveyance to solve the project water supply problem. In engineering design practice, the terrain and geological conditions along the water conveyance pipeline are complex, with high mountains, steep slopes, and large elevation differences. When the local terrain elevation difference exceeds 60m and the elevation control meets the water conveyance requirements, in order to reduce the project cost, the pressure grade of the pipe material can be considered to be reduced, and a pressure reducing pool can be set at the place suitable for the terrain. The pressure reducing pool generally consists of an inlet pipe, an outlet pipe, and an overflow pipe. During periods such as the low water consumption at night, the overflow in the pressure reducing pool is treated, and the overflow pipe is generally connected to a natural channel nearby, and in some areas, it is treated by scattered drainage, which wastes the scarce fresh water resources.

[0003] The patent with the publication number CN212900032U discloses a new type of horizontal pressure reducing pool, including a pressure reducing pool water tank, an inlet valve well, an outlet valve well, an inlet pipe, an outlet pipe, a float, and a turning force rod. An inlet valve well and an outlet valve well are arranged in the pressure reducing pool water tank, providing space for manual operation; when the water flow with a large pressure enters the inlet pipe valve well through the inlet pipe, part of the water flow flows into the outlet pipe valve well through the bypass pipe and is output from the outlet pipe; at the same time, part of the water flow flowing in through the inlet pipe flows into the pressure reducing pool water tank through the inlet; when the water volume in the pressure reducing pool water tank increases, the float rises under the action of buoyancy, and when the buoyancy reaches a certain value, the turning force rod acts on the inlet butterfly valve to control the water inlet; when the water volume in the pressure reducing pool water tank reaches a certain amount, the water is conveyed out by opening the valve in the outlet valve well; this device can effectively solve the problem of waste of fresh water resources.

[0004] However, when the high-pressure water in the inlet pipe sprays into the pressure reducing pool water tank, it will cause the liquid level in the pressure reducing pool water tank to fluctuate frequently, which will cause the float ball valve to shake up and down. Therefore, the piston rod of the float ball valve will reciprocally open and close, that is, the piston rod will move in the closing direction for a while and then move in the opening direction for a while. When the piston rod moves in the closing direction, a water hammer phenomenon will occur, so there is a risk of water hammer damage to the float ball valve. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a pressure reducing pool that reduces the risk of water hammer damage to the float ball valve.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: a pressure-reducing pool, which includes a pool body, a water inlet pipe and a water outlet pipe. A float valve is provided on the water inlet pipe, and the float valve is used to open and close the water outlet of the water inlet pipe. A partition member is further provided in the pressure-reducing pool. The partition member divides the space in the pressure-reducing pool into an energy dissipation pool and a water outlet pool. A through hole communicating the energy dissipation pool and the water outlet pool is provided on the partition member. The setting position of the water outlet of the water inlet pipe is adapted to the position of the energy dissipation pool. The float of the float valve is located in the water outlet pool. The water outlet pipe is communicated with the water outlet pool;

[0007] When the float valve is closed, it corresponds to the highest limit water level line of the water outlet pool. The height of the partition member in the vertical direction is not lower than the highest limit water level line;

[0008] When the float valve is fully opened, it corresponds to the lowest limit water level line of the water outlet pool. The highest point of the inner wall of the through hole in the vertical direction is not higher than the lowest limit water level line.

[0009] Further, the axis of the through hole is inclined with respect to the horizontal plane. The side of the through hole close to the energy dissipation pool is side A, and the side of the through hole close to the water outlet pool is side B. The distance from the axis of the through hole on side A to the horizontal plane is L3, and the distance from the axis of the through hole on side B to the horizontal plane is L4, and L3 is less than L4.

[0010] Further, the distance from the top surface of the partition member to the highest limit water level line is L2, and 10 cm ≤ L2 ≤ 20 cm.

[0011] Further, the distance from the highest point of the inner wall of the through hole in the vertical direction to the lowest limit water level line is L1, and 30 cm ≤ L1 ≤ 50 cm.

[0012] Further, in the projection on the horizontal plane, the hinge point of the valve body of the float valve and the connecting rod of the float valve is located in the water outlet pool.

[0013] Further, a wellhead is provided at the top of the pool body. A cover plate is provided on the wellhead. A ladder is further provided on the inner wall of the pool body. An overflow pipe is also provided at the top of the pool body, and the overflow pipe is communicated with the water outlet pool.

[0014] Further, a plurality of through holes are provided, and the through holes are arranged on the partition member at intervals.

[0015] Further, a first drain pipe and a second drain pipe are provided at the bottom of the pool body. The first drain pipe is communicated with the water outlet pool, and the second drain pipe is communicated with the energy dissipation pool.

[0016] Further, the bottom surface of the energy dissipation pool is a second guiding surface, and the second guiding surface is used to guide the accumulated water at the bottom of the energy dissipation pool to the inlet of the second drain pipe; the bottom surface of the water outlet pool is a first guiding surface, and the first guiding surface is used to guide the accumulated water at the bottom of the water outlet pool to the inlet of the first drain pipe.

[0017] Furthermore, a filter screen is also arranged in the energy dissipation pool, and the filter screen is located below the water outlet of the water inlet pipe.

[0018] The beneficial effects of the present invention are as follows:

[0019] This application can stabilize the water flow: The turbulent water flow in the energy dissipation pool flows through the through holes of the partition member to the water outlet pool. The through holes can achieve the purpose of stabilizing the water flow, reducing the risk of frequent fluctuations in the liquid level of the water outlet pool. In this way, the number of reciprocating switches of the float valve can be reduced, thereby reducing the number of impacts of water hammer on the float valve. Therefore, the risk of damage to the float valve can be reduced. Description of the Drawings

[0020] Figure 1 is a top view schematic diagram of the present invention;

[0021] Figure 2 is a cross-sectional view of the present invention along line 1-1;

[0022] Figure 3 is a cross-sectional view of the present invention along line 2-2.

[0023] In the figure, the markings are: 1 is the pool body, 12 is the energy dissipation pool, 14 is the water outlet pool, 2 is the water inlet pipe, 22 is the water outlet, 3 is the water outlet pipe, 4 is the overflow pipe, 5 is the partition member, 52 is the through hole, 6 is the float valve, 7 is the cover plate, 82 is the first drain pipe, 84 is the second drain pipe, and 9 is the ladder. Specific Embodiments

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0025] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the present invention claimed, but merely represents some embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0026] Such as Figures 1 to 3As shown in the figure, the pressure relief pool of the present invention includes a pool body 1, a water inlet pipe 2 and a water outlet pipe 3. A float valve 6 is provided on the water inlet pipe 2. The float valve 6 is used to open and close the water outlet 22 of the water inlet pipe 2. A partition member 5 is also provided in the pressure relief pool. The partition member 5 divides the space in the pressure relief pool into an energy dissipation pool 12 and a water outlet pool 14. A through hole 52 communicating the energy dissipation pool 12 and the water outlet pool 14 is provided on the partition member 5. The position of the water outlet 22 of the water inlet pipe 2 is adapted to the position of the energy dissipation pool 12, that is: in the projection on the horizontal plane, the water outlet 22 is located in the energy dissipation pool 12, and the float of the float valve 6 is located in the water outlet pool 14. The water outlet pipe 3 is communicated with the water outlet pool 14;

[0027] When the float valve 6 is closed, it corresponds to the highest limit water level line of the water outlet pool 14, and the height of the partition member 5 in the vertical direction is not lower than the highest limit water level line;

[0028] When the float valve 6 is fully opened, it corresponds to the lowest limit water level line of the water outlet pool 14, and the highest point of the inner wall of the through hole 52 in the vertical direction is not higher than the lowest limit water level line.

[0029] This application is particularly suitable for the external water supply pressure relief pool in mountainous areas.

[0030] Specifically, the high-pressure water in the water inlet pipe 2 enters the energy dissipation pool 12 through the water outlet 22 of the float valve 6. The high-pressure water is dissipated by the energy dissipation pool 12, and the water after energy dissipation is input into the water outlet pipe 3 through the water outlet pool 14;

[0031] This application can control the water volume in the pressure relief pool: the float in the water outlet pool 14 adjusts the opening of the float valve 6 according to the water surface height, so as to adjust the water inflow in the pressure relief pool and achieve the purpose of stable water output. When the water level in the water outlet pool 14 is lower than the lowest control water level line, the float valve 6 is fully opened and the water inlet pipe 2 discharges water; when it is the low water consumption peak period and the water level in the water outlet pool 14 is higher than the highest control water level line, the float rises and the valve closes, and the water inlet pipe 2 does not discharge water, thus avoiding the overflow of the pressure relief pool and reducing the waste of water resources.

[0032] This application can stabilize the water flow: the water with a turbulent flow state in the energy dissipation pool 12 flows to the water outlet pool 14 through the through hole 52 of the partition member 5. The through hole 52 can achieve the purpose of stabilizing the water flow, reducing the risk of frequent fluctuations of the liquid level in the water outlet pool 14. In this way, the number of times of reciprocating opening and closing of the float valve 6 can be reduced, so as to reduce the number of impacts of water hammer on the float valve 6, and therefore the risk of damage to the float valve 6 can be reduced;

[0033] The partition member 5 can be a partition wall or a partition board. The partition board is preferably a steel partition board;

[0034] If the height of the partition member 5 in the vertical direction is lower than the highest limit water level line, the water in the energy dissipation pool 12 will overflow from the top of the partition member 5 into the water outlet pool 14, that is: the liquid levels of the energy dissipation pool 12 and the water outlet pool 14 are the same liquid level. In this way, the high-pressure water sprayed from the water outlet 22 of the water inlet pipe 2 will cause the liquid level of the water outlet pool 14 to fluctuate frequently, which will also cause the water hammer to damage the float valve 6;

[0035] The highest point of the inner wall of the through hole 52 in the vertical direction is higher than the lowest limit water level line. When the float valve 6 is located between the lowest limit water level line and the highest point of the inner wall of the through hole 52 in the vertical direction, the water flowing out of the through hole 52 will also cause the water level in the water outlet pool 14 to fluctuate, which will also cause the water hammer to damage the float valve 6.

[0036] Preferably, the axis of the through hole 52 is inclined with respect to the horizontal plane. The side of the through hole 52 close to the energy dissipation pool 12 is the A side, and the side of the through hole 52 close to the water outlet pool 14 is the B side. The distance from the axis of the through hole 52 on the A side to the horizontal plane is L3, and the distance from the axis of the through hole 52 on the B side to the horizontal plane is L4, and L3 is less than L4.

[0037] Specifically, if the liquid level of the energy dissipation pool 12 is high and the liquid level of the water outlet pool 14 is low, the water in the energy dissipation pool 12 flows to the water outlet pool 14. Under the impact of the high-pressure water sprayed from the water outlet 22, the flow velocities of the water in the energy dissipation pool 12 are different, that is: the water in the energy dissipation pool 12 will shake. If the axis direction of the through hole 52 is parallel to the thickness direction of the partition member 5, the flow velocities of the water flowing through the through hole 52 to the water outlet pool 14 are also different, and the thickness of the wall is limited, that is: the flow path of the water is limited. Therefore, when the flow path of the water is short, the flow stabilizing effect of the through hole 52 on the water is poor, which may also cause the flow velocities of the water in the water outlet pool 14 to be different, resulting in the water in the water outlet pool 14 shaking; Therefore, the through hole 52 of the present application is selected to be inclined to increase the flow path length;

[0038] For the convenience of description, the two ways of the present application inclined with respect to the horizontal plane are respectively called: up and down inclination. The present application selects upward inclination, that is: L3 is less than L4. If it is inclined downward, that is: L3 is greater than L4, because the water needs to flow from the energy dissipation pool 12 through the through hole 52 to the water outlet pool 14. If the through hole 52 is inclined downward, the flow direction of the water in the energy dissipation pool 12 entering the water outlet pool 14 is downward, and the flow direction of the water is upward after reaching the water outlet pool 14. In this way, the flow pattern of the water in the water outlet pool 14 is not good, and vortices will be generated, which will also cause the water hammer to damage the float valve 6.

[0039] Preferably, the distance from the top surface of the partition member 5 to the highest limit water level line is L2, and 10 cm ≤ L2 ≤ 20 cm. Specifically, if the top surface of the partition member 5 is less than 10 cm, the volume of the water outlet pool 14 will be reduced, and if it is greater than 20 cm, the upper space will be wasted.

[0040] Preferably, the distance from the highest point on the inner wall of the through hole 52 in the vertical direction to the lowest limit water level line is L1, where 30 cm ≤ L1 ≤ 50 cm. Specifically, if L1 is greater than 50 cm, the depth of the pressure relief pool will be too deep, increasing the construction cost. When L1 is greater than 30 cm, the water flowing out from the through hole 52 has little impact on the water level fluctuation in the water outlet pool 14.

[0041] Preferably, in the projection on the horizontal plane, the hinge point of the valve body of the float valve 6 and the connecting rod of the float valve 6 is located in the water outlet pool 14. Specifically, if the hinge point of the connecting rod of the float valve 6 and the valve body of the float valve 6 is located in the energy dissipation pool 12, the technical problem can also be solved. At this time, a slot for the connecting rod to pass through needs to be opened on the partition member 5, so the partition member 5 needs to be made relatively high, increasing the construction cost.

[0042] Preferably, a wellhead is provided at the top of the pool body 1, a cover plate 7 is arranged on the wellhead, a ladder 9 is also arranged on the inner wall of the pool body 1, and an overflow pipe 4 is also arranged at the top of the pool body 1. The overflow pipe 4 is communicated with the water outlet pool 14.

[0043] Preferably, a plurality of through holes 52 are provided, and the through holes 52 are arranged on the partition member 5 at intervals.

[0044] Preferably, a first drain pipe 82 and a second drain pipe 84 are also arranged at the bottom of the pool body 1. The first drain pipe 82 is communicated with the water outlet pool 14, and the second drain pipe 84 is communicated with the energy dissipation pool 12.

[0045] Preferably, the bottom surface of the energy dissipation pool 12 is a second guiding surface, and the second guiding surface is used to guide the accumulated water at the bottom of the energy dissipation pool 12 to the inlet of the second drain pipe 84; the bottom surface of the water outlet pool 14 is a first guiding surface, and the first guiding surface is used to guide the accumulated water at the bottom of the water outlet pool 14 to the inlet of the first drain pipe 82. Specifically, the first guiding surface and the second guiding surface are inclined surfaces. The arrangement of the first guiding surface and the second guiding surface reduces the risk of accumulated water at the bottom of the energy dissipation pool 12 and the water outlet pool 14; the first guiding surface and the second guiding surface can also be selected as an upwardly convex arc surface or a downwardly concave arc surface.

[0046] Preferably, a filter screen is also arranged in the energy dissipation pool 12, and the filter screen is located below the water outlet 22 of the water inlet pipe 2. Specifically, this solution can filter impurities in the water in the water inlet pipe 2.

[0047] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention. In addition, terms such as "first" and "second" are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. In this article, "parallel", "perpendicular", etc. are not strict mathematical and / or geometric limitations, and also include the allowable errors that can be understood by those skilled in the art and are permitted in manufacturing or using, etc.

[0048] It should be further noted that, without conflict, the embodiments in the present invention and the features and technical solutions in the embodiments may be combined with each other.

Claims

1. Pressure relief tank, comprising a tank body (1), a water inlet pipe (2) and a water outlet pipe (3), wherein a float valve (6) is arranged on the water inlet pipe (2), and the float valve (6) is used for opening and closing the water outlet (22) of the water inlet pipe (2), and is characterized in that: A partition member (5) is further provided in the pressure reducing pool. The partition member (5) divides the space in the pressure reducing pool into an energy dissipation pool (12) and a water outlet pool (14). A through hole (52) communicating the energy dissipation pool (12) and the water outlet pool (14) is provided on the partition member (5). The setting position of the water outlet (22) of the water inlet pipe (2) is adapted to the position of the energy dissipation pool (12). The floating ball of the floating ball valve (6) is located in the water outlet pool (14). The water outlet pipe (3) is communicated with the water outlet pool (14); When the floating ball valve (6) is closed, it corresponds to the highest limit water level line of the water outlet pool (14). The height of the partition member (5) in the vertical direction is not lower than the highest limit water level line; When the floating ball valve (6) is fully opened, it corresponds to the lowest limit water level line of the water outlet pool (14). The highest point of the inner wall of the through hole (52) in the vertical direction is not higher than the lowest limit water level line; The axis of the through hole (52) is inclined with respect to the horizontal plane. The side of the through hole (52) close to the energy dissipation pool (12) is side A, and the side of the through hole (52) close to the water outlet pool (14) is side B. The distance from the axis of the through hole (52) on side A to the horizontal plane is L3, and the distance from the axis of the through hole (52) on side B to the horizontal plane is L4. The L3 is less than the L4; A first drain pipe (82) and a second drain pipe (84) are further provided at the bottom of the pool body (1). The first drain pipe (82) is communicated with the water outlet pool (14), and the second drain pipe (84) is communicated with the energy dissipation pool (12). The bottom surface of the energy dissipation pool (12) is a second guiding surface for guiding the accumulated water at the bottom of the energy dissipation pool (12) to the inlet of the second drain pipe (84). The bottom surface of the water outlet pool (14) is a first guiding surface for guiding the accumulated water at the bottom of the water outlet pool (14) to the inlet of the first drain pipe (82).

2. The decompression pool according to claim 1, wherein: The distance from the top surface of the partition member (5) to the highest limit water level line is L2, and 10 cm ≤ L2 ≤ 20 cm.

3. The decompression pool according to claim 1, wherein: The distance from the highest point of the inner wall of the through hole (52) in the vertical direction to the lowest limit water level line is L1, and 30 cm ≤ L1 ≤ 50 cm.

4. The decompression tank according to claim 1, characterized in that: In the projection on the horizontal plane, the hinge point of the valve body of the floating ball valve (6) and the connecting rod of the floating ball valve (6) is located in the water outlet pool (14).

5. The decompression pool according to claim 1, characterized in that: A wellhead is provided at the top of the pool body (1). A cover plate (7) is provided on the wellhead. A ladder (9) is further provided on the inner wall of the pool body (1). An overflow pipe (4) is also provided at the top of the pool body (1). The overflow pipe (4) is communicated with the water outlet pool (14).

6. The decompression pool according to claim 1, wherein: A plurality of through holes (52) are provided, and the through holes (52) are arranged on the partition member (5) at intervals.

7. The decompression pool according to claim 1, characterized in that: A filter screen is further provided in the energy dissipation pool (12), and the filter screen is located below the water outlet (22) of the water inlet pipe (2).

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