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

Abstract

The invention relates to a pressure reduction and energy dissipation device of a mountain water supply system. The invention 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] The invention relates to the technical field of water supply and energy dissipation, in particular to a pressure reducing and energy dissipating device for a mountain water supply system. Background Art

[0002] During the design process of water supply projects in mountainous areas, the elevation differences of various water use points are large, and elevation differences of tens of meters or even more than a hundred meters are common. When supplying water from the same water source, the water supply equipment is selected based on the most unfavorable water use point conditions. Water use points with lower terrain and shorter pipelines often have higher water pressures, which seriously scour structures such as water storage tanks, affecting the service life of the structures. In addition, the excessive water pressure causes the water flow in the water storage tank to be extremely unstable, and bubbles exist in the water supply pipes downstream of the water storage tanks, increasing the risk of cavitation in the downstream water supply pipes.

[0003] Therefore, the design of pressure reduction and energy dissipation for water use points with large abundant water head has become an indispensable task in the design of mountain water supply systems. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in view of the above-mentioned problems, a pressure reducing and energy dissipating device for a mountain water supply system is provided.

[0005] The technical solution adopted by the present invention is: a pressure reducing and energy dissipating device for a mountain water supply system, comprising:

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

[0007] The elastic energy dissipation member is arranged inside the cylinder, and the elastic energy dissipation member and the cylinder are on the same axis. A gap is left between the circumference of the elastic energy dissipation member and the inner wall of the cylinder to form a water passage. The elastic energy dissipation member is used to absorb the impact energy of the water flow entering the water inlet short pipe through elastic buffering, so that the water flow after energy dissipation flows to the water outlet short pipe through the water channel.

[0008] Through the above-mentioned technical means, the water of the mountain water supply system is led to the water inlet short pipe, the water flow is blocked by the elastic energy dissipation parts in the cylinder, and the elastic expansion and contraction of the elastic energy dissipation parts is used to absorb the energy of the water flow impact. The water body after energy dissipation flows out from the water 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 connecting piece and a buffer plate. Multiple groups of damping springs are symmetrically arranged in the cylinder. One end of the damping spring is connected to one end of the water outlet short pipe in the cylinder, and the other end of the damping spring is connected to the buffer plate via the connecting piece.

[0010] In some embodiments, the connecting member includes a connecting block and a connecting rod, the connecting rod is cross-connected to the wall surface of the buffer plate on the side facing the water outlet short pipe, and the end of the connecting rod is correspondingly connected to a damping spring via the connecting block.

[0011] In some embodiments, the connecting rod is made of H-shaped I-beam, 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 12 cm, a wire diameter of 8 mm, a pitch of 16 mm, and a length of 60 cm. The spring constant is 122.5 kN / m, the free length of the damping spring is 0.6 m to 1.0 m, and the telescopic stroke is controlled at 0.3 m to 0.5 m.

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

[0014] In some embodiments, the water inlet short pipe at least partially extends 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 water inlet short pipe is twice the diameter of the water inlet short pipe.

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

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

[0017] The beneficial effects of the present invention are:

[0018] 1. Under high water pressure conditions, first lead the water flow in the mountain water supply system into the cylinder, and use the elastic energy dissipation parts in the cylinder to convert the excess kinetic energy of the water flow into elastic potential energy to achieve the purpose of reducing pressure and dissipating energy. By absorbing the excess water head, the water storage tank and other structures can be effectively protected from damage, and the cavitation phenomenon in the downstream water supply pipeline can be reduced, extending the service life of the pipeline. The elastic energy dissipation parts are also conducive to automatically adjusting the telescopic stroke according to the changes in the water supply pressure, ensuring the good adaptability of the device to different water pressure conditions. At the same time, a water passage is formed between the circumference of the elastic energy dissipation parts and the inner wall of the cylinder to avoid unnecessary head loss to the water supply system under low water pressure conditions, thereby achieving "high-pressure energy dissipation" while ensuring "low-pressure unobstructed". BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

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

[0024] Description of reference numerals:

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

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

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

[0028] "First," "second," etc. As used herein, these terms act as labels for the nouns that precede them and do not imply any type of ordering (e.g., spatial, temporal, logical, etc.). DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with 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, comprising a cylinder 2 and an elastic energy dissipating member, wherein a water inlet short pipe 1 is provided at one end of the cylinder 2, and a water outlet short pipe 7 is provided at the other end, and both the water inlet short pipe 1 and the water outlet short pipe 7 coincide with the central axis of the cylinder 2. An elastic energy dissipating member is provided inside the cylinder 2, and the elastic energy dissipating member and the cylinder 2 are on the same axis, and a gap is left between the circumference of the elastic energy dissipating member and the inner wall of the cylinder 2 to form a water passage. The elastic energy dissipating member is used to absorb the impact energy of the water flow flowing into the water inlet short pipe 1 through elastic buffering, so that the water flow after energy dissipation flows to the water outlet short pipe 7 through the water channel.

[0031] In some embodiments, the elastic energy dissipation component includes a damping spring 6, a connecting member and a buffer plate 3. Multiple groups of damping springs 6 are symmetrically arranged in the cylinder 2. One end of the damping spring 6 is connected to one end of the cylinder 2 near the water outlet short pipe 7, and the other end of the damping spring 6 is connected to the buffer plate 3 via the connecting member.

[0032] Furthermore, the connecting member includes a connecting block 5 and a connecting rod 4, the two connecting rods 4 are connected in a cross shape to the wall surface of the buffer plate 3 facing the water outlet short pipe 7, and the ends of the connecting rods 4 are correspondingly connected to the damping springs 6 through the connecting block 5. Specifically, in this embodiment, four groups of damping springs 6 are arranged, which are respectively connected to the ends of the two connecting rods 4.

[0033] Furthermore, the connecting rod 4 is made of H-shaped I-beam, the connecting block 5 is made of circular steel plate, and 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 I-beam, two cross-intersecting H-shaped I-beams intersect at the center of the buffer plate 3, and the two I-beams are connected together by welding, and the two ends of the wing plate on one side of the I-beam are welded and fixed to the circular steel plate, and the wing plate on the other side of the I-beam is welded and fixed to the buffer plate 3.

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

[0035] The present application symmetrically arranges damping springs 6 at four locations inside the cylinder 2 to ensure that the buffer plate 3 is evenly stressed, and the flow state of the water body after squeezing the buffer plate 3 is stable, thereby improving the reliability of the energy dissipation device.

[0036] Furthermore, the cross section of the buffer plate 3 is circular, and the diameter is 1.2 times the diameter of the water inlet short pipe 1, so as to ensure that the high-pressure water flow flowing into the water inlet short pipe 1 can effectively impact the buffer plate 3, and the thickness is 5cm to 15cm according to the water pressure working conditions. The buffer plate 3 is installed in the center position of the cylinder 2, and the center of the buffer plate 3 coincides with the center line of the water inlet short pipe 1. Since the buffer plate 3 is the core component of the device for decompression and energy dissipation, the buffer plate 3 in this embodiment is made of impact-resistant high manganese steel.

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

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

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

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

[0041] The water inlet pipe of the mountain water supply system is connected to the water inlet short pipe 1 through a flange, and the water flow is introduced into the cylinder 2 through the drainage of the water inlet short pipe 1. After the high-pressure water flow enters the cylinder 2, it is sprayed onto the wall surface of the buffer plate 3 in the form of a free jet. After the abundant water pressure squeezes the damping spring 6 through the buffer plate 3, the excess kinetic energy is converted into the potential energy of the spring, and then flows through the flow section between the buffer plate 3 and the inner wall of the cylinder 2 to the water outlet short pipe 7, and then flows to the water storage tank through the water outlet pipe, thereby completing the process of reducing pressure and dissipating energy.

[0042] The present application converts the abundant water pressure of the water flow into the potential energy of the damping spring 6 by squeezing the damping spring 6 by the buffer plate 3, thereby avoiding unnecessary scouring of structures such as the pool, extending the service life of the system, and not increasing the operating costs. The water flow after energy dissipation enters the water storage tank, which has little disturbance on the flow state of the liquid in the water tank, and the flow state of the liquid in the water tank is relatively stable, avoiding cavitation and other diseases in the subsequent water supply system of the water tank, and improving the stability of the water supply system.

[0043] In addition, when the water supply pressure is low, the water flows freely out through the water inlet short pipe 1, bypasses the buffer plate 3 and flows to the water passage with smaller edge resistance, which does not affect the normal operation of the water supply system. Avoiding unnecessary head loss to the water supply system under low water pressure conditions not only achieves "high-pressure energy dissipation" but also ensures "low-pressure unobstructed flow".

[0044] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

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

2. The pressure reducing and energy dissipating device of a mountain water supply system according to claim 1, characterized in that: The elastic energy dissipation component comprises a damping spring (6), a connecting piece and a buffer plate (3); a plurality of groups of damping springs (6) are symmetrically arranged in the cylinder (2); one end of the damping spring (6) is connected to one end of the cylinder (2) close to the water outlet short pipe (7); and the other end of the damping spring (6) is connected to the buffer plate (3) via the connecting piece.

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

4. The pressure reducing and energy dissipating device of a mountain water supply system according to claim 3, characterized in that: The connecting rod (4) is made of H-shaped I-beam, the connecting block (5) is made of a circular steel plate, and 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 of 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 12 cm, a wire diameter of 8 mm, a pitch of 16 mm, and a length of 60 cm. The spring constant is 122.5 kN / m. The free length of the damping spring (6) is 0.6 m to 1.0 m, and the telescopic stroke is controlled at 0.3 m to 0.5 m.

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

7. The pressure reducing and energy dissipating device of a mountain water supply system according to claim 2, characterized in that: The water inlet short pipe (1) at least partially extends 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 water inlet short pipe (1) is twice the diameter of the water inlet short 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 water inlet short pipe (1), so that the flow area of ​​the water passage is not less than the flow cross-sectional area of ​​the water inlet short pipe (1).

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

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