Drainage pressure relief and shunt structure and municipal water supply and drainage pipeline with same

Abstract

The utility model discloses a municipal water supply and drainage pipeline with the structure of water supply and drainage pressure relief shunting structure and belongs to water supply and drainage pressure relief technical field, including main pipeline, the connecting pipe is connected with first -class quick pressure relief unit, two -stage adjustable shunt unit and three -level buffer pressure -stabilizing unit, first -class quick pressure relief unit and two -stage adjustable shunt unit are including big drift piston type pressure relief valve and electric three -way shunt valve respectively, be provided with driving mechanism on three -level buffer pressure -stabilizing unit, three -level buffer pressure -stabilizing unit includes porous pressure -stabilizing filter core, be provided with spiral guide vane on porous pressure -stabilizing filter core. The utility model discloses through pressure relief, dynamic shunt, buffer pressure -stabilizing three -level cooperation, realizes full range pressure protection, and pressure control precision is high, effectively resists water hammer impact, guarantees pipe network safe operation, through the automatic control calculation of real -time pressure flow data, realizes quick response, improves shunt proportion regulation precision, and the efficiency is higher compared with traditional manual device.

Description

Technical Field

[0001] This utility model belongs to the field of water supply and drainage pressure relief technology, and particularly relates to a water supply and drainage pressure relief and diversion structure and a municipal water supply and drainage pipeline having the structure. Background Technology

[0002] In municipal water supply and drainage pipeline systems, traditional pressure relief and diversion structures generally suffer from problems such as delayed pressure relief response, insufficient diversion accuracy, weak automatic adjustment capability, and poor adaptability to operating conditions.

[0003] Existing technologies mainly rely on single-stage pressure relief valves or simple diversion devices, such as manual gate valves and ordinary check valves, to achieve pressure regulation. However, they are difficult to cope with complex operating conditions such as sudden changes in pipeline pressure and large fluctuations in flow. For sudden high-pressure impacts, such as water hammer effects caused by the start-up and shutdown of water pumps or the sudden closure of valves, single-stage pressure relief valves are prone to valve core jamming and pressure relief channel blockage, leading to the risk of pipeline pressure exceeding limits. Manual diversion devices require frequent manual adjustments and cannot dynamically balance the water volume of each branch according to real-time flow and pressure parameters, which can easily cause local pipeline low-pressure water shortages or high-pressure pipe bursts. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a water supply and drainage pressure relief and diversion structure and a municipal water supply and drainage pipeline with the structure, which has the advantages of automatic pressure regulation, high control accuracy and regulation efficiency, and safer pipeline operation, thus solving the problems existing in the prior art.

[0005] This utility model is implemented as follows: a water supply and drainage pressure relief and diversion structure includes a main pipeline, on which several connecting pipes are provided. Each connecting pipe is connected to a primary rapid pressure relief unit, a secondary adjustable diversion unit, and a tertiary buffer pressure stabilizing unit. The primary rapid pressure relief unit and the secondary adjustable diversion unit respectively include a large-diameter piston-type pressure relief valve and an electric three-way diversion valve. The tertiary buffer pressure stabilizing unit is provided with a driving mechanism and includes a porous pressure stabilizing filter element. A spiral guide plate is provided on the porous pressure stabilizing filter element.

[0006] As a preferred embodiment of this utility model, the large-diameter piston-type pressure relief valve is provided with a spring preload mechanism, and a valve disc is provided at the bottom of the spring preload mechanism.

[0007] As a preferred embodiment of this invention, a guide cone is fixedly installed at the inlet end of the large-diameter piston-type pressure relief valve.

[0008] As a preferred embodiment of this utility model, the two output ends of the electric three-way diverter valve are respectively fixedly connected to a first branch pipe and a second branch pipe.

[0009] In a preferred embodiment of this invention, the porous pressure-stabilizing filter element is rotatably installed inside the energy dissipation box, the energy dissipation box is fixedly installed inside the outer shell, and several diversion pipes are fixedly connected to the bottom of the energy dissipation box.

[0010] As a preferred embodiment of this invention, the inner wall of the energy dissipation box is provided with a plurality of flow guide strips, which form a labyrinthine flow channel.

[0011] In a preferred embodiment of this invention, the driving mechanism includes a drive motor, which is fixedly mounted on the outer casing, and the output end of the drive motor is fixedly connected to a rotating shaft.

[0012] As a preferred embodiment of this utility model, one end of the rotating shaft extends into the energy dissipation box, and a driving bevel tooth is fixedly installed at the end. A driven bevel tooth is meshed with one side of the driving bevel tooth, and the driven bevel tooth is fixedly sleeved on the upper end of the porous pressure stabilizing filter element.

[0013] A municipal water supply and drainage pipeline includes a pipeline body and a water supply and drainage pressure relief and diversion structure, wherein the pipeline body is connected to the main pipeline.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model achieves full-range pressure protection through three-level coordination of pressure relief, dynamic diversion, and buffer pressure stabilization, with high pressure control accuracy, effectively resisting water hammer impact and ensuring the safe operation of the pipeline network.

[0016] 2. This utility model achieves rapid response and improves the accuracy of flow ratio adjustment through automatic control calculation of real-time pressure and flow data. It is more efficient than traditional manual devices and reduces the risk of human error.

[0017] 3. This utility model avoids the problem of "excessive pressure relief" in traditional devices through intelligent diversion strategy. The three-stage filtration and pressure stabilization design reduces the flow velocity fluctuation in downstream pipelines, reduces pump energy consumption and pipeline wear, and lowers the overall energy consumption of the system. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0019] Figure 2 This is a partial cross-sectional three-dimensional structural schematic diagram of the large-diameter piston-type pressure relief valve of this utility model;

[0020] Figure 3 This is a top view of the two-stage adjustable shunt unit of this utility model;

[0021] Figure 4 This is a partial cross-sectional three-dimensional structural diagram of the three-stage buffer voltage regulator unit and drive mechanism of this utility model.

[0022] In the diagram: 1. First-stage rapid pressure relief unit; 11. Large-diameter piston-type pressure relief valve; 12. Spring preload mechanism; 13. Valve disc; 14. Guide cone; 2. Second-stage adjustable diversion unit; 21. Electric three-way diversion valve; 22. First branch pipe; 23. Second branch pipe; 3. Third-stage buffer pressure stabilizing unit; 31. Outer shell; 32. Energy dissipation box; 321. Guide strip; 33. Diversion pipe; 34. Porous pressure stabilizing filter element; 35. Spiral guide plate; 4. Drive mechanism; 41. Drive motor; 42. Rotating shaft; 43. Drive bevel gear; 44. Driven bevel gear; 5. Main pipe; 51. Connecting pipe. Detailed Implementation

[0023] To further understand the utility model content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0024] The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0025] like Figures 1 to 4 As shown, the water supply and drainage pressure relief and diversion structure provided in this embodiment of the utility model includes a main pipe 5, a plurality of connecting pipes 51 are provided on the main pipe 5, and a first-stage rapid pressure relief unit 1, a second-stage adjustable diversion unit 2 and a third-stage buffer pressure stabilizing unit 3 are connected to the connecting pipes 51. The first-stage rapid pressure relief unit 1 and the second-stage adjustable diversion unit 2 respectively include a large-diameter piston-type pressure relief valve 11 and an electric three-way diversion valve 21. The third-stage buffer pressure stabilizing unit 3 is provided with a drive mechanism 4 and includes a porous pressure stabilizing filter element 34. A spiral guide plate 35 is provided on the porous pressure stabilizing filter element 34.

[0026] The pressure relief and diversion structure is precisely controlled by the first-stage rapid pressure relief unit 1, the second-stage adjustable diversion unit 2, and the third-stage buffer and pressure stabilizing unit 3, so as to realize the graded release of pipeline pressure and dynamic distribution of flow, thereby improving the system's shock resistance.

[0027] In specific settings, it is also equipped with a pressure and flow measurement and control module. By integrating a high-precision pressure sensor and an electromagnetic flow meter, it can collect pipeline pressure and flow data in real time. The measurement and control host is equipped with a PLC controller and has a built-in water hammer early warning algorithm, which can automatically trigger a graded pressure relief strategy according to the pressure change rate.

[0028] Linkage control: When the pipeline pressure is relatively low, only the three-stage pressure stabilizing unit operates to maintain normal flow distribution. When the pressure is moderate, the two-stage diversion valve is automatically opened to the preset ratio. When the pressure is relatively high, the large-diameter piston-type pressure relief valve 11 and the electric three-way diversion valve 21 are linked to fully open to reduce the pressure to a safe range.

[0029] Furthermore, a spring preload mechanism 12 is provided inside the large-diameter piston-type pressure relief valve 11, and a valve disc 13 is provided at the bottom of the spring preload mechanism 12. A guide cone 14 is fixedly installed at the inlet end of the large-diameter piston-type pressure relief valve 11.

[0030] The valve disc 13 is made of wear-resistant rubber sealing material and is combined with the spring pre-tightening mechanism 12. It can automatically open when the pipeline pressure suddenly increases, and quickly release the instantaneous high pressure. The guide cone 14 is installed at the inlet end of the valve body to guide the high-speed water flow to impact the valve disc 13 evenly and avoid uneven load jamming.

[0031] Furthermore, the two output ends of the electric three-way diverter valve 21 are respectively fixedly connected to the first branch pipe 22 and the second branch pipe 23.

[0032] The first branch pipe 22 and the second branch pipe 23 are two branches. The main channel and the two branches are arranged in a Y-shape. The first branch pipe 22 and the second branch pipe 23 are respectively connected to the municipal emergency drainage network and the water storage and regulating tank. The valve disc 13 has a built-in high-precision displacement sensor and is driven by a servo motor to steplessly adjust the diversion ratio and improve the flow distribution accuracy.

[0033] Furthermore, the porous pressure-stabilizing filter element 34 is rotatably installed inside the energy dissipation box 32, and the energy dissipation box 32 is fixedly installed inside the outer shell 31. Several diversion pipes 33 are fixedly connected to the bottom of the energy dissipation box 32, and several guide strips 321 are provided on the inner wall of the energy dissipation box 32, forming a labyrinthine flow channel.

[0034] The spiral guide plate 35 is spirally wound on the porous pressure-stabilizing filter element 34. The upper end of the porous pressure-stabilizing filter element 34 is connected to the connecting pipe 51 to perform secondary energy dissipation and pressure stabilization on the water flow after pressure relief. The porous pressure-stabilizing filter element 34 is made of stainless steel sintered mesh, which can effectively intercept impurity particles and avoid downstream pipeline scouring and wear.

[0035] Furthermore, the drive mechanism 4 includes a drive motor 41, which is fixedly mounted on the housing 31. The output end of the drive motor 41 is fixedly connected to a rotating shaft 42. One end of the rotating shaft 42 extends into the energy dissipation box 32, and a drive bevel gear 43 is fixedly mounted on the end. A driven bevel gear 44 is meshed with one side of the drive bevel gear 43, and the driven bevel gear 44 is fixedly sleeved on the upper end of the porous pressure stabilizing filter element 34.

[0036] The drive motor 41 drives the drive bevel gear 43 and the driven bevel gear 44 to rotate, thereby driving the porous pressure stabilizing filter element 34 and the spiral guide plate 35 to rotate, dispersing the pressure to the inner wall of the energy dissipation box 32. Through the labyrinth-like flow channel structure formed by several guide strips 321, the water flow after pressure relief is subjected to secondary energy dissipation and pressure stabilization.

[0037] A municipal water supply and drainage pipeline includes a pipeline body and a water supply and drainage pressure relief and diversion structure, wherein the pipeline body is connected to the main pipeline 5.

[0038] The working principle of this utility model:

[0039] Municipal water enters the device through the inlet of the main pipe 5. First, the flow velocity is balanced by the spiral guide plate 35 of the three-stage buffer and pressure-stabilizing unit 3. After preliminary filtration by the porous filter element, it is then delivered to the downstream diversion pipe 33. At this time, the electric three-way diversion valve 21 in the second-stage adjustable diversion unit 2 maintains its initial set angle, and the large-diameter piston-type pressure relief valve 11 of the first-stage rapid pressure relief unit 1 is closed. The system operates smoothly according to the design flow rate. When the monitoring and control module detects an abnormal pressure in the pipeline network, it automatically initiates the graded control program.

[0040] When the pipeline pressure is relatively low, only the three-stage pressure stabilizing unit operates to maintain normal flow distribution. When the pressure is moderate, the two-stage diversion valve automatically opens to the preset ratio. When the pressure is relatively high, the large-diameter piston-type pressure relief valve 11 and the electric three-way diversion valve 21 are linked and fully opened to reduce the pressure to a safe range.

[0041] In summary, this water supply and drainage pressure relief and diversion structure achieves full-range pressure protection through three-stage synergy of pressure relief, dynamic diversion, and buffer pressure stabilization. It boasts high pressure control accuracy, effectively resists water hammer impact, and ensures safe operation of the pipeline network. Through automatic control calculation of real-time pressure and flow data, it achieves rapid response and improves the accuracy of diversion ratio adjustment. Compared to traditional manual devices, it is more efficient and reduces the risk of human error. The intelligent diversion strategy avoids the "over-pressure relief" problem of traditional devices. The three-stage filtration and pressure stabilization design reduces downstream pipeline flow velocity fluctuations, decreases pump energy consumption and pipeline wear, and lowers the overall system energy consumption.

[0042] 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.

[0043] 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 water supply and drainage pressure relief and diversion structure, including a main pipeline (5), characterized in that: The main pipeline (5) is provided with several connecting pipes (51). The connecting pipes (51) are connected to a first-stage rapid pressure relief unit (1), a second-stage adjustable diversion unit (2) and a third-stage buffer pressure stabilizing unit (3). The first-stage rapid pressure relief unit (1) and the second-stage adjustable diversion unit (2) respectively include a large-diameter piston-type pressure relief valve (11) and an electric three-way diversion valve (21). The third-stage buffer pressure stabilizing unit (3) is provided with a drive mechanism (4). The third-stage buffer pressure stabilizing unit (3) includes a porous pressure stabilizing filter element (34). The porous pressure stabilizing filter element (34) is provided with a spiral guide plate (35).

2. The water supply and drainage pressure relief and diversion structure as described in claim 1, characterized in that: The large-diameter piston-type pressure relief valve (11) is provided with a spring preload mechanism (12), and a valve disc (13) is provided at the bottom of the spring preload mechanism (12).

3. The water supply and drainage pressure relief and diversion structure as described in claim 1, characterized in that: The large-diameter piston-type pressure relief valve (11) has a flow guide cone (14) fixedly installed at its inlet end.

4. The water supply and drainage pressure relief and diversion structure as described in claim 1, characterized in that: The electric three-way diverter valve (21) has a first branch pipe (22) and a second branch pipe (23) fixedly connected to its two output ends, respectively.

5. The water supply and drainage pressure relief and diversion structure as described in claim 1, characterized in that: The porous pressure-stabilizing filter element (34) is rotatably installed inside the energy dissipation box (32), which is fixedly installed inside the outer shell (31). Several diversion pipes (33) are fixedly connected to the bottom of the energy dissipation box (32).

6. The water supply and drainage pressure relief and diversion structure as described in claim 5, characterized in that: The inner wall of the energy dissipation box (32) is provided with a number of flow guides (321), and the number of flow guides (321) forms a labyrinth flow channel.

7. The water supply and drainage pressure relief and diversion structure as described in claim 5, characterized in that: The drive mechanism (4) includes a drive motor (41), which is fixedly mounted on the outer casing (31), and the output end of the drive motor (41) is fixedly connected to a rotating shaft (42).

8. The water supply and drainage pressure relief and diversion structure as described in claim 7, characterized in that: One end of the rotating shaft (42) extends into the energy dissipation box (32), and a driving bevel tooth (43) is fixedly installed at the end. A driven bevel tooth (44) is meshed with one side of the driving bevel tooth (43), and the driven bevel tooth (44) is fixedly sleeved on the upper end of the porous pressure stabilizing filter element (34).

9. A municipal water supply and drainage pipe, characterized in that, It includes the pipe body and the water supply and drainage pressure relief and diversion structure according to any one of claims 1-8, wherein the pipe body and the main pipe (5) are connected.

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