Pressure reducing device of water delivery system
By introducing energy dissipation tanks and pressure stabilizing tanks into the water conveyance system, combined with piston-type flow regulating and pressure regulating valves and reinforced concrete energy dissipation piers, the problem of insufficient efficiency of traditional pressure reduction facilities has been solved, achieving efficient pressure reduction and stabilization, and improving the safety and equipment life of the water conveyance system.
Patent Information
- Application Number
- CN202522027468.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-22
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2035-09-22
AI Technical Summary
In long-distance water transmission projects, traditional pressure-reducing facilities suffer from pipeline vibration, water hammer effect, and equipment cavitation damage due to their single pressure-reducing and energy-dissipating type and difficulty in hydraulic connection, which affects the safety of water transmission and the life of the facilities.
A pressure-reducing device for a water conveyance system is adopted, including an upstream water inlet pipe, a valve well, a pressure-reducing well, and a water outlet pipe. The pressure-reducing well is equipped with an overflow partition wall to divide it into an energy dissipation pool and a pressure-stabilizing pool. Dual pressure reduction and pressure stabilization are achieved through a pressure-reducing valve, an overflow port, and a vent. The pressure reduction efficiency is improved by combining a piston-type flow regulating and pressure regulating valve and a reinforced concrete energy dissipation block.
It achieves dual pressure reduction and stabilization, improves pressure reduction efficiency, prevents negative or overpressure, extends facility life, and ensures the safety of the water transmission system.
Smart Images
Figure CN223548496U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of pressure control technology for water conveyance systems in water conservancy projects, and particularly relates to a pressure reducing device for water conveyance systems. Background Technology
[0002] In long-distance water conveyance projects, water flow often generates enormous energy due to terrain elevation differences or pump station pressurization. Without effective energy dissipation and pressure reduction of the high-speed water flow, problems such as pipeline vibration, water hammer, and equipment cavitation damage will occur, seriously affecting water conveyance safety and facility lifespan. Traditional pressure reduction facilities mostly use independent pressure reducing valves or pressure reducing pools, but these are inherently limited by their single pressure reduction and energy dissipation type and difficulty in hydraulic connection, resulting in serious deficiencies in high-efficiency pressure reduction and system pressure stabilization. Utility Model Content
[0003] In view of the problems existing in the prior art, the purpose of this utility model is to provide a pressure reducing device for a water conveyance system.
[0004] To solve the above problems, the present invention adopts the following technical solution:
[0005] A pressure-reducing device for a water conveyance system includes an upstream inlet pipe, a valve well, a pressure-reducing well, and a outlet pipe. The pressure-reducing well is located downstream of the valve well. An overflow partition wall is installed inside the pressure-reducing well, dividing it into an energy dissipation pool and a pressure-stabilizing pool. The upstream inlet pipe passes through the valve well, and its outlet end is located inside the energy dissipation pool. A pressure-reducing valve is installed inside the valve well and is connected to the upstream inlet pipe. The outlet end of the upstream inlet pipe is bent downwards and faces the bottom of the energy dissipation pool. The gap between the top of the overflow partition wall and the top plate of the pressure-reducing well forms an overflow outlet. A vent hole is provided on the top plate of the pressure-reducing well. The inlet end of the outlet pipe is connected to the downstream side wall of the pressure-stabilizing pool.
[0006] Preferably, the pressure reducing valve is a piston-type flow regulating and pressure regulating valve.
[0007] Preferably, the bottom of the energy dissipation pool is provided with a reinforced concrete energy dissipation block, which is located below the outlet end of the upstream water pipe.
[0008] Preferably, a steel cage is connected between the reinforced concrete energy dissipation pier and the outlet end of the upstream water pipe.
[0009] Preferably, the top plate of the pressure relief well is provided with an inspection port, and a ladder is provided on the upstream side wall of the energy dissipation pool below the inspection port.
[0010] The beneficial effects of this utility model are:
[0011] Compared with existing technologies, the advantages of this utility model are:
[0012] In operation, water from the upstream pipe undergoes a first pressure reduction via a pressure reducing valve. Then, it is directionally sprayed from the outlet of the upstream pipe to the bottom of the energy dissipation tank for a second pressure reduction. The water then overflows from the overflow outlet at the top of the overflow partition wall into the pressure stabilizing tank. Finally, the water in the pressure stabilizing tank is transported downstream through a drain pipe. Vent holes on the top plate of the pressure reducing well ensure communication between the well and the outside environment, preventing negative or overpressure conditions in the pressure stabilizing tank. This invention achieves improved pressure reduction efficiency and reliable pressure stabilization through dual pressure reduction and the use of a pressure stabilizing tank, providing an innovative solution for pressure reduction in water supply systems. Attached Figure Description
[0013] Figure 1 This is a longitudinal sectional view of the present invention;
[0014] Figure 2 This is a plan view of the present invention.
[0015] In the diagram: 1. Upstream water pipe; 2. Valve well; 21. Pressure reducing valve; 31. Energy dissipation pool; 311. Reinforced concrete energy dissipation pier; 312. Reinforcing cage; 32. Pressure stabilizing pool; 4. Water outlet pipe; 5. Overflow partition wall; 51. Overflow outlet; 6. Vent hole; 7. Inspection port; 8. Ladder. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] like Figure 1-2 As shown, this utility model provides a technical solution: a pressure reducing device for a water conveyance system, including an upstream water inlet pipe 1, a valve well 2, a pressure reducing well, and a drain pipe 4. The pressure reducing well is located downstream of the valve well 2. An overflow partition wall 5 is provided inside the pressure reducing well, dividing it into an energy dissipation pool 31 and a pressure stabilizing pool 32. After the upstream water inlet pipe 1 passes through the valve well 2, its outlet end is located inside the energy dissipation pool 31. A pressure reducing valve 21 is provided inside the valve well 2. The pressure reducing valve 21 is connected to the upstream water inlet pipe 1. The outlet end of the upstream water inlet pipe 1 is bent downwards and faces the bottom of the energy dissipation pool 31. The gap between the top of the overflow partition wall 5 and the top plate of the pressure reducing well is an overflow port 51. A vent hole 6 is provided on the top plate of the pressure reducing well. The inlet end of the drain pipe 4 is connected to the downstream side wall of the pressure stabilizing pool 32.
[0018] In use, water from the upstream water pipe 1 undergoes a first pressure reduction via pressure reducing valve 21, and is then directionally sprayed from the outlet of the upstream water pipe 1 to the bottom of the energy dissipation tank 31 for a second pressure reduction. The water then overflows from the overflow port 51 at the top of the overflow partition wall 5 into the pressure stabilizing tank 32. Finally, the water in the pressure stabilizing tank 32 is transported downstream via the drain pipe 4. The vent 6 on the top plate of the pressure reducing well ensures communication between the well and the outside environment, preventing negative or overpressure in the pressure reducing tank. This invention achieves improved pressure reduction efficiency and reliable pressure stabilization through dual pressure reduction and the pressure stabilizing tank 32, providing an innovative solution for pressure reduction in water supply systems.
[0019] Furthermore, the pressure reducing valve 21 is a piston-type flow regulating and pressure regulating valve, which allows for pressure adjustment and facilitates the adjustment of incoming water to a suitable pressure based on the results of pipeline hydraulic calculations.
[0020] Furthermore, the bottom of the energy dissipation pool 31 is provided with a reinforced concrete energy dissipation block 311. The reinforced concrete energy dissipation block 311 is located below the outlet end of the upstream water pipe 1, so that the upstream water is sprayed in a directional manner onto the reinforced concrete energy dissipation block 311, which protects the bottom plate of the energy dissipation pool 31 and prevents the bottom plate of the energy dissipation pool 31 from being damaged by long-term water flow.
[0021] Furthermore, a steel cage 312 is connected between the reinforced concrete energy dissipation pier 311 and the outlet end of the upstream water pipe 1, which securely connects the outlet end of the upstream water pipe 1 to the reinforced concrete energy dissipation pier 311, reducing the impact of pipeline vibration on the facility's lifespan.
[0022] Furthermore, an inspection port 7 is provided on the top plate of the pressure relief well, and a ladder 8 is provided on the upstream side wall of the energy dissipation pool 31 below the inspection port 7, so as to facilitate management personnel to enter the pressure relief well for inspection and maintenance.
[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A pressure-reducing device for a water conveyance system, characterized in that, The system includes an upstream water inlet pipe (1), a valve well (2), a pressure reducing well, and a drain pipe (4). The pressure reducing well is located downstream of the valve well (2). An overflow partition wall (5) is installed inside the pressure reducing well to divide it into an energy dissipation pool (31) and a pressure stabilizing pool (32). After the upstream water inlet pipe (1) passes through the valve well (2), its outlet end is located inside the energy dissipation pool (31). A pressure reducing valve (21) is installed inside the valve well (2). The pressure reducing valve (21) is connected to the upstream water inlet pipe (1). The outlet end of the upstream water inlet pipe (1) is bent downwards and faces the bottom of the energy dissipation pool (31). The gap between the top of the overflow partition wall (5) and the top plate of the pressure reducing well is an overflow port (51). A vent hole (6) is provided on the top plate of the pressure reducing well. The inlet end of the drain pipe (4) is connected to the downstream side wall of the pressure stabilizing pool (32).
2. The pressure reducing device for a water conveyance system according to claim 1, characterized in that, The pressure reducing valve (21) is a piston-type flow regulating and pressure regulating valve.
3. The pressure reducing device for a water conveyance system according to claim 1, characterized in that, The bottom of the energy dissipation pool (31) is provided with a reinforced concrete energy dissipation block (311), which is located below the outlet end of the upstream water pipe (1).
4. A pressure-reducing device for a water conveyance system according to claim 3, characterized in that, A steel cage (312) is connected between the reinforced concrete energy dissipation pier (311) and the outlet end of the upstream water pipe (1).
5. A pressure-reducing device for a water conveyance system according to claim 1, characterized in that, The pressure relief well is provided with an inspection port (7) on its top plate, and a ladder (8) is provided on the upstream side wall of the energy dissipation pool (31) below the inspection port (7).