Pressure reduction and energy dissipation device of mountain land water supply system

Abstract

The utility model relates to a pressure reduction and energy dissipation device of a mountain water supply system. The utility model is suitable for the technical field of water supply energy dissipation. The technical problem to be solved by the application is to provide the pressure reduction and energy dissipation device of the mountain water supply system. According to the technical scheme, the pressure reduction and energy dissipation device of the mountain land water supply system comprises a barrel, a water inlet pipe, a water outlet pipe, a water inlet pipe, a water outlet pipe and a water outlet pipe, the elastic energy dissipation piece is arranged in the cylinder body, the elastic energy dissipation piece and the cylinder body are located on the same axis, a gap is reserved between the peripheral side of the elastic energy dissipation piece and the inner wall of the cylinder body, a water passing channel is formed, and the elastic energy dissipation piece is used for absorbing impact energy of water flow flowing into the water inlet short pipe through elastic buffering, so that the water flow subjected to energy dissipation flows to the water outlet short pipe through the water passing channel.

Description

Technical Field

[0001] This utility model relates to the field of water supply energy dissipation technology, and in particular to a pressure reduction and energy dissipation device for a mountain water supply system. Background Technology

[0002] In the design process of mountain water supply projects, there are often large differences in elevation between water supply points, with differences of tens or even hundreds of meters being common. When supplying water from the same water source, the water supply equipment is selected based on the most unfavorable operating conditions at the water supply point. This often results in higher water pressure at water supply points with lower elevations and shorter pipelines, which causes more severe erosion of structures such as water storage tanks, affecting the service life of the structures. In addition, the excess water pressure leads to extremely unstable water flow in the water storage tank, and air bubbles exist in the water supply pipeline downstream of the water storage tank, increasing the risk of cavitation in the downstream water supply pipeline.

[0003] Therefore, pressure reduction and energy dissipation design for water use points with large water head has become an indispensable part of the design of mountain water supply systems. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a pressure reduction and energy dissipation device for a mountain water supply system, in view of the above-mentioned problems.

[0005] The technical solution adopted in this utility model is: a pressure reduction and energy dissipation device for a mountain water supply system, comprising:

[0006] The cylinder has a short inlet pipe at one end and a short outlet pipe at the other end.

[0007] The elastic energy dissipation element is located inside the cylinder. The elastic energy dissipation element and the cylinder are on the same axis. There is a gap between the periphery of the elastic energy dissipation element and the inner wall of the cylinder to form a water passage. The elastic energy dissipation element is used to absorb the impact energy of the water flow in the inlet short pipe through elastic buffering, so that the energy dissipated water flows through the water passage to the outlet short pipe.

[0008] Through the above-mentioned technical means, the water of the mountain water supply system is connected to the inlet short pipe. The water flow is blocked by the elastic energy dissipation component in the cylinder. The elastic expansion and contraction of the elastic energy dissipation component absorbs the energy of the water flow impact. The energy-dissipated water flows out from the outlet short pipe to the water storage tank through the water channel, thereby realizing the absorption of the excess water head in the mountain water supply system.

[0009] In some embodiments, the elastic energy dissipation component includes a damping spring, a connector, and a buffer plate. Multiple sets of damping springs are symmetrically arranged inside the cylinder. One end of the damping spring is connected to one end of the cylinder near the outlet short pipe, and the other end of the damping spring is connected to the buffer plate via the connector.

[0010] In some embodiments, the connector includes a connecting block and a connecting rod. The connecting rod is connected in a cross shape to the wall surface of the buffer plate facing the outlet short pipe, and a damping spring is correspondingly connected to the end of the connecting rod via the connecting block.

[0011] In some embodiments, the connecting rod is made of H-beam steel, the connecting block is made of circular steel plate, and the cross-section of the connecting block is the same as that of the damping spring.

[0012] In some embodiments, the damping spring is a stainless steel spring with a diameter of 12cm, a wire diameter of 8mm, a pitch of 16mm, and a length of 60cm. The spring constant is 122.5kN / m, the free length of the damping spring is 0.6m to 1.0m, and the extension stroke is controlled between 0.3m and 0.5m.

[0013] In some embodiments, the buffer plate has a circular cross-section with a diameter 1.2 times that of the inlet short pipe, and the buffer plate is made of high manganese steel.

[0014] In some embodiments, the inlet pipe extends at least partially into the interior of the cylinder to prevent the formation of a reverse siphon, and the distance from the buffer plate to the outlet of the inlet pipe is twice the diameter of the inlet pipe.

[0015] In some embodiments, the cross-sectional diameter of the cylinder is 1.6 times that of the inlet short pipe, such that the flow area of ​​the water passage is not less than the flow cross-sectional area of ​​the inlet short pipe.

[0016] In some embodiments, the inlet short pipe is connected to a first reserved flange, which is used for flange connection to the inlet pipe that can connect to the mountain water supply system, and the outlet short pipe is connected to a second reserved flange, which is used for flange connection to the outlet pipe that can connect to the water storage tank.

[0017] The beneficial effects of this utility model are:

[0018] 1. Under high water pressure conditions, the water flow from the mountain water supply system is first diverted into the cylinder. The elastic energy dissipator inside the cylinder converts the excess kinetic energy of the water flow into elastic potential energy, achieving pressure reduction and energy dissipation. By absorbing excess head, it effectively protects the water storage tank and other structures from damage, reduces cavitation in downstream water supply pipelines, and extends pipeline lifespan. The elastic energy dissipator also allows for automatic adjustment of its extension stroke according to changes in water pressure, ensuring good adaptability to different water pressure conditions. Simultaneously, a water passage is formed between the periphery of the elastic energy dissipator and the inner wall of the cylinder, preventing unnecessary head loss in the water supply system under low water pressure conditions. This achieves "high-pressure energy dissipation" while ensuring "smooth flow under low pressure." Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the planar structure of this application.

[0020] Figure 2 yes Figure 1 Cross-sectional structure diagram along the AA direction.

[0021] Figure 3 yes Figure 2 Cross-sectional structure diagram along the BB direction.

[0022] Figure 4 yes Figure 2 Cross-sectional structure diagram along the CC- direction.

[0023] Figure 5 yes Figure 2 Cross-sectional structure diagram along the DD direction.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Inlet short pipe; 2. Cylinder body; 3. Buffer plate; 4. Connecting rod; 5. Connecting block; 6. Damping spring; 7. Outlet short pipe; 11. First reserved flange; 71. Second reserved flange.

[0026] This specification includes references to "one embodiment" or "implementation". The use of the phrase "in one embodiment" or "in an embodiment" does not necessarily refer to the same embodiment. Specific features, structures, or characteristics may be combined in any suitable manner consistent with this disclosure.

[0027] The term "comprising" is open-ended. As used in the appended claims, it does not exclude additional structures or steps.

[0028] "First," "second," etc. As used in this article, these terms serve as labels for the nouns preceding them and do not imply any type of ordering (e.g., spatial, temporal, logical, etc.). Detailed Implementation

[0029] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below with reference to specific embodiments.

[0030] Combination Figures 1 to 5As shown, this embodiment is a pressure-reducing and energy-dissipating device for a mountain water supply system, including a cylinder 2 and an elastic energy-dissipating component. One end of the cylinder 2 has an inlet short pipe 1, and the other end has an outlet short pipe 7. Both the inlet short pipe 1 and the outlet short pipe 7 are aligned with the central axis of the cylinder 2. An elastic energy-dissipating component is installed inside the cylinder 2, and it is coaxial with the cylinder 2. A gap is left between the periphery of the elastic energy-dissipating component and the inner wall of the cylinder 2, forming a water passage. The elastic energy-dissipating component absorbs the impact energy of the water flowing into the inlet short pipe 1 through elastic buffering, allowing the energy-dissipated water to flow through the water passage to the outlet short pipe 7.

[0031] In some implementations, the elastic energy dissipation component includes a damping spring 6, a connector, and a buffer plate 3. Multiple sets of damping springs 6 are symmetrically arranged inside the cylinder 2. One end of the damping spring 6 is connected to the end of the cylinder 2 near the outlet short pipe 7, and the other end of the damping spring 6 is connected to the buffer plate 3 via the connector.

[0032] Furthermore, the connector includes a connecting block 5 and connecting rods 4. The two connecting rods 4 are connected in a cross shape to the wall surface of the buffer plate 3 facing the outlet short pipe 7. The ends of the connecting rods 4 are connected to damping springs 6 via the connecting block 5. Specifically, in this embodiment, four sets of damping springs 6 are arranged, each connected to one end of the two connecting rods 4.

[0033] Furthermore, the connecting rod 4 is made of H-beam, and the connecting block 5 is made of circular steel plate. The cross-section of the connecting block 5 is the same as that of the damping spring 6. Specifically, the connecting rod 4 is made of No. 10 H-beam. Two H-beams intersect at the center of the buffer plate 3 and are connected together by welding. The two ends of one flange of the H-beam are welded and fixed to the circular steel plate, and the other flange of the H-beam is welded and fixed to the buffer plate 3.

[0034] Furthermore, the top of the damping spring 6 is welded and fixed to the inner wall of the cylinder 2, and the bottom of the damping spring 6 is welded and fixed to the connecting block 5. The damping spring 6 is a stainless steel spring with a diameter of 12cm, a wire diameter of 8mm, a pitch of 16mm, and a length of 60cm. The spring constant is 122.5kN / m. The free length of the damping spring 6 is 0.6m to 1.0m, and the extension stroke is controlled between 0.3m and 0.5m. Thus, the damping spring 6 can adapt to fluctuations in the water supply pressure according to the length formed by extension and contraction.

[0035] This application symmetrically sets damping springs 6 in four places inside the cylinder 2 to ensure that the buffer plate 3 is subjected to uniform force and the water flow is stable after squeezing the buffer plate 3, thereby improving the reliability of the energy dissipation device.

[0036] Furthermore, the buffer plate 3 has a circular cross-section with a diameter 1.2 times that of the inlet short pipe 1, to ensure that the high-pressure water flow from the inlet short pipe 1 can effectively impact the buffer plate 3. The thickness ranges from 5cm to 15cm depending on the water pressure conditions. The buffer plate 3 is installed at the center of the cylinder 2, with its center coinciding with the centerline of the inlet short pipe 1. Since the buffer plate 3 is the core component for pressure reduction and energy dissipation in this device, it is made of impact-resistant high-manganese steel in this embodiment.

[0037] Furthermore, the cross-section of the cylinder 2 is circular, and the diameter of the cross-section of the cylinder 2 is 1.6 times the diameter of the inlet short pipe 1, so that the flow area of ​​the water passage is not less than the flow cross-sectional area of ​​the inlet short pipe 1. The height of the cylinder 2 is determined according to the diameter of the inlet pipe and the water pressure.

[0038] Furthermore, the inlet short pipe 1 extends at least partially into the cylinder 2 to prevent the formation of a reverse siphon. Specifically, in this embodiment, the inlet short pipe 1 extends 50 cm into the cylinder 2, and the distance from the buffer plate 3 to the outlet of the inlet short pipe 1 is twice the diameter of the inlet short pipe 1.

[0039] In some implementation schemes, one end of the inlet short pipe 1 is welded to the cylinder 2, and the other end of the inlet short pipe 1 is connected to a first reserved flange 11, which is used for flange connection to the inlet pipe of the mountain water supply system. One end of the outlet short pipe 7 is welded to the cylinder 2, and the other end of the outlet short pipe 7 is connected to a second reserved flange 71, which is used for flange connection to the outlet pipe of the water storage tank.

[0040] The implementation principle of a pressure reduction and energy dissipation device for a mountain water supply system is as follows:

[0041] The inlet pipe of the mountain water supply system is connected to the inlet short pipe 1 via a flange. Water is introduced into the cylinder 2 through the inlet short pipe 1. After the high-pressure water enters the cylinder 2, it is sprayed onto the wall of the buffer plate 3 in a free jet flow. The excess water pressure compresses the damping spring 6 through the buffer plate 3, converting the excess kinetic energy into the potential energy of the spring. Then, it flows through the flow section between the buffer plate 3 and the inner wall of the cylinder 2 to the outlet short pipe 7, and then flows to the water storage tank through the outlet pipe, thus completing the process of pressure reduction and energy dissipation.

[0042] This application converts excess water pressure into potential energy of the damping spring 6 by compressing the buffer plate 3, thus avoiding unnecessary erosion of structures such as water tanks, extending the system's service life, and without increasing operating costs. The energy-dissipated water flows into the storage tank, causing minimal disturbance to the liquid flow within the tank, resulting in a more stable liquid flow and preventing cavitation and other problems in the subsequent water supply system, thereby improving the stability of the water supply system.

[0043] Furthermore, when the water supply pressure is low, the water flows freely out of the inlet short pipe 1, bypassing the buffer plate 3 and flowing to the water passage with lower edge resistance, without affecting the normal operation of the water supply system. This avoids unnecessary head loss to the water supply system under low water pressure conditions, achieving not only "high pressure energy dissipation" but also ensuring "smooth flow under low pressure".

[0044] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A pressure-reducing and energy-dissipating device for a mountain water supply system, characterized in that, include: The cylinder (2) has an inlet pipe (1) at one end and an outlet pipe (7) at the other end; The elastic energy dissipation component is located inside the cylinder (2). The elastic energy dissipation component and the cylinder (2) are on the same axis. There is a gap between the periphery of the elastic energy dissipation component and the inner wall of the cylinder (2) to form a water passage. The elastic energy dissipation component is used to absorb the impact energy of the water flow in the inlet short pipe (1) through elastic buffering, so that the water flow after energy dissipation flows through the water passage to the outlet short pipe (7).

2. The pressure-reducing and energy-dissipating device for a mountain water supply system according to claim 1, characterized in that: The elastic energy dissipation component includes a damping spring (6), a connector and a buffer plate (3). Multiple sets of damping springs (6) are symmetrically arranged inside the cylinder (2). One end of the damping spring (6) is connected to the end of the cylinder (2) near the outlet pipe (7), and the other end of the damping spring (6) is connected to the buffer plate (3) via the connector.

3. The pressure-reducing and energy-dissipating device for a mountain water supply system according to claim 2, characterized in that: The connector includes a connecting block (5) and a connecting rod (4). The connecting rod (4) is connected in a cross shape to the wall of the buffer plate (3) facing the water outlet pipe (7). The end of the connecting rod (4) is connected to a damping spring (6) via the connecting block (5).

4. The pressure-reducing and energy-dissipating device for a mountain water supply system according to claim 3, characterized in that: The connecting rod (4) is made of H-beam steel, and the connecting block (5) is made of circular steel plate. The cross-section of the connecting block (5) is the same as that of the damping spring (6).

5. The pressure-reducing and energy-dissipating device for a mountain water supply system according to claim 2, characterized in that: The damping spring (6) is a stainless steel spring with a diameter of 12cm, a wire diameter of 8mm, a pitch of 16mm, and a length of 60cm. The spring constant is 122.5kN / m. The free length of the damping spring (6) is 0.6m to 1.0m, and the extension stroke is controlled between 0.3m and 0.5m.

6. The pressure-reducing and energy-dissipating device for a mountain water supply system according to claim 2, characterized in that: The buffer plate (3) has a circular cross-section and a diameter that is 1.2 times the diameter of the inlet short pipe (1). The buffer plate (3) is made of high manganese steel.

7. The pressure-reducing and energy-dissipating device for a mountain water supply system according to claim 2, characterized in that: The inlet pipe (1) extends at least partially into the interior of the cylinder (2) to prevent the formation of a reverse siphon, and the distance from the buffer plate (3) to the outlet of the inlet pipe (1) is twice the diameter of the inlet pipe (1).

8. The pressure-reducing and energy-dissipating device for a mountain water supply system according to claim 1, characterized in that: The cross-sectional diameter of the cylinder (2) is 1.6 times that of the inlet short pipe (1), so that the flow area of ​​the water passage is not less than the flow cross-sectional area of ​​the inlet short pipe (1).

9. The pressure-reducing and energy-dissipating device for a mountain water supply system according to claim 1, characterized in that: The inlet short pipe (1) is connected to a first reserved flange (11), which is used for flange connection to the inlet pipe that can connect to the mountain water supply system. The outlet short pipe (7) is connected to a second reserved flange (71), which is used for flange connection to the outlet pipe that can connect to the water storage tank.

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