Novel service valve well for large-diameter buried water delivery pipeline

Abstract

A water collecting well is arranged in the valve well, the water collecting well is connected with a drainage pipe, the valve well comprises a well body without a top cover, the well body is exposed out of the earth surface, and a function arrangement area and an overhaul work area are distributed in the well body. The water conveying pipeline penetrates in from one side of the function arrangement area well body and penetrates out from the other side of the function arrangement area well body, an exposed section is formed in the function arrangement area, and the exposed section is provided with a service valve; the two ends of the bypass pipe are connected with the water conveying pipeline on the front side and the rear side of the service valve respectively, and the middle section of the bypass pipe is exposed. The water conveying pipeline is provided with a lateral inlet and outlet channel which is arranged on the water conveying pipeline on the front / rear side of the service valve, and an inlet and an outlet of the lateral inlet and outlet channel are closed during operation of the pipeline system and opened during maintenance to communicate with a maintenance working area. An opening is formed in one side of the overhaul work area well body and communicates the overhaul work area with an external getting-off channel, and the getting-off channel is connected with the ground surface. The overhaul valve well is convenient to overhaul, convenient to manage, stable in structure and easy to construct.

Description

Technical Field

[0001] This utility model relates to the field of water pipeline ancillary facilities, and in particular to a new type of maintenance valve well for large-diameter buried water pipelines. Background Technology

[0002] Pipeline projects may experience siltation, biological adhesion, and inner wall damage over long-term operation. Some older projects may fail to meet the original design requirements due to the inability or inconvenience of long-term maintenance.

[0003] Most existing large-diameter pipeline maintenance valve wells are underground. These wells are located underground for extended periods, requiring the removal of the cover plates for maintenance and necessitating access for daily operations, which is extremely inconvenient and makes them difficult to use. Furthermore, underground maintenance valve wells are often impossible to monitor daily, making them difficult to adapt to modern management practices.

[0004] In addition, the inspection holes currently installed in the valve wells of large-diameter pipelines are mostly vertical access structures for personnel and equipment. During maintenance, both personnel and equipment must enter from the top, and vehicles and large equipment require lifting equipment, making entry and exit difficult and inefficient. Utility Model Content

[0005] In view of the defects and deficiencies in the existing technology, this utility model proposes a new type of inspection valve well for large-diameter buried water transmission pipelines, so as to solve the problem of inconvenient daily monitoring, management and use of inspection valve wells for large-diameter buried water transmission pipelines.

[0006] The above-mentioned objective of this utility model is achieved through the following technical solution:

[0007] A new type of maintenance valve well for large-diameter buried water pipelines, wherein a water collection well is provided inside the valve well, and the water collection well is connected to a drainage pipe to drain the water accumulated in the valve well. The valve well includes an open well body exposed on the ground surface, and functional layout area and maintenance work area are distributed inside the well body.

[0008] The water pipeline enters from one side of the well body in the functional layout area and exits from the other side, forming a corresponding exposed section within the functional layout area. The exposed section of the water pipeline is equipped with a maintenance valve.

[0009] The water supply pipeline is equipped with a bypass pipe, which is located in the functional layout area. Both ends of the bypass pipe are connected to the water supply pipelines on both sides before and after the maintenance valve, and the middle section is exposed. The exposed section of the bypass pipe is equipped with a water filling valve.

[0010] The water pipeline is also equipped with a lateral access passage for vehicles and personnel. The lateral access passage is located within the functional layout area and is arranged on the water pipeline in front of and / or behind the maintenance valve. The inlet and outlet of the lateral access passage are closed during normal operation of the pipeline system and are opened during maintenance to connect the maintenance work area.

[0011] One side of the well body in the maintenance work area is set as an open opening, connecting the maintenance work area with the external vehicle exit passage, and the other end of the vehicle exit passage is connected to the ground surface.

[0012] Preferably, the lateral access channel is a three-way branch pipe connecting two adjacent pipe sections of the water supply pipeline. The free port of the three-way branch pipe is the inlet and outlet of the lateral access channel, and it is equipped with a detachable end cap.

[0013] Preferably, the alighting passage has a U-shaped trough structure, and the bottom of the trough extends downwards from the ground connection end to connect with the bottom plate of the maintenance work area.

[0014] Preferably, the water collection well is arranged on one side of the functional layout area, and the drainage pipe is laid through the pipe trench of the water conveyance pipeline and exits the well body of the functional layout area. The drainage pipe is set at a slight inclination according to the terrain to discharge water by gravity or to discharge the water accumulated in the valve well by a small gravity pump.

[0015] Preferably, the functional layout area has pipe outer concrete forming at both ends of the water supply pipeline, and each pipe outer concrete is integrated with the corresponding inner wall of the well body in the functional layout area.

[0016] Each side entrance / exit channel is encased in the corresponding pipe's outer concrete casing, with the entrance and exit located on the surface of the pipe's outer concrete casing closest to the maintenance work area.

[0017] Both ends of the bypass pipe are respectively encased in the concrete surrounding the two pipes;

[0018] The inner end of the drainage pipe is encased in concrete within one of the pipes.

[0019] Preferably, the well body is mainly composed of retaining walls.

[0020] Compared with the prior art, the beneficial effects of this utility model's technical solution are:

[0021] This utility model features an exposed maintenance valve well, facilitating daily monitoring, management, and use. It offers significant advantages for the maintenance and daily management of long-distance, large-diameter buried water pipelines. By installing this maintenance valve well, routine maintenance vehicles and lifting vehicles can directly enter the well via the access road, facilitating valve body installation. Pipeline maintenance vehicles and personnel can directly access the water pipeline for maintenance via a side access road, making entry and exit simple and efficient. A water-filling valve is installed on the exposed section of the bypass pipe, allowing for water flow regulation and segmented filling, ensuring safety and preventing vibration and cavitation of the pipeline and equipment caused by small openings in the main pipeline (i.e., water pipeline) maintenance valve, thus protecting pipelines and valves from damage and ensuring safe water filling.

[0022] This utility model features a stable structure and simple construction. It incorporates self-draining pipes that are integrated with the terrain and buried pipe channels to ensure that the valve wells do not accumulate water during normal operation. If self-draining is not possible, a small gravity pump can be installed to drain the water from the valve wells, preventing the equipment and structure from being submerged in water. The use of underground retaining walls and pipe enclosure structures helps to reduce investment in thrust structures and lower costs.

[0023] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0024] Figure 1 Plan view of a novel maintenance valve well for a large-diameter buried water pipeline, which is an exemplary embodiment of this utility model;

[0025] In the diagram: 1. Inspection valve; 2. Water collection well; 3. Drainage pipe; 4. Retaining wall structure; 5. Water supply pipeline; 6. Concrete casing for pipeline; 7. Bypass pipe; 8. Water filling valve; 9. T-junction pipe; 10. End cap; 11. Exit passage. Detailed Implementation

[0026] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent.

[0027] To better illustrate this embodiment, some parts in the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions;

[0028] It will be understood by those skilled in the art that certain well-known structures and their descriptions may be omitted in the accompanying drawings;

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The terms "upper," "lower," "left," "right," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0031] like Figure 1As shown, this is a novel maintenance valve well for a large-diameter buried water pipeline, an exemplary embodiment of the present invention. The maintenance valve well is segmented along the pipeline. This allows for easy maintenance in the event of a fault or accident in a specific section, by simply closing the upstream and downstream maintenance valves 1 of that section and draining the water from that section for repair, thus saving water volume and shortening the pipeline's refill time. Based on the principles of convenient maintenance and reasonable drainage time, maintenance valve wells are arranged every 5-10 km. It is also known that a water collection well 2 is provided within the valve well, connected to a drainage pipe 3 to drain accumulated water from the valve well.

[0032] The well body of the maintenance valve well is mainly composed of retaining wall structure 4. The outer side retains soil, and the inner side has functional layout area and maintenance work area. The depth of the retaining wall is determined according to the burial depth of the valve well. The well body has no top cover and is an exposed structure on the ground surface, which is convenient for daily monitoring, management and use.

[0033] The water supply pipeline 5 enters from one side of the well body in the functional layout area and exits from the other side, forming a corresponding exposed section within the functional layout area. A maintenance valve 1 is installed on this exposed section. To ensure structural stability, concrete casing 6 is formed at both ends of the water supply pipeline 5 within the functional layout area, each casing being integrally connected to the corresponding inner wall of the well body in the functional layout area. The water supply pipeline 5 located between these two concrete casing 6 sections constitutes the exposed section.

[0034] During the maintenance of the 5-section water pipeline, the pressure difference before and after the maintenance valve 1 is often very large. After the maintenance is completed, if the maintenance valve 1 (large diameter) on the water pipeline 5 is used with a small opening to adjust the water filling, severe cavitation will occur after the valve, resulting in unstable operation and easy puncture of the baffle. Therefore, a bypass pipe 7 is arranged in the functional layout area of ​​this maintenance valve well. Its two ends are connected to the water pipelines 5 on both sides before and after the maintenance valve 1, respectively. Both ends of the bypass pipe 7 are encased in the concrete casing 6 of the two aforementioned pipelines, with the middle section exposed. A water filling valve 8 and related maintenance valves are installed on this exposed section. In this way, the maintenance valve 1 on the water pipeline 5 can be closed during the sectional water filling, and the bypass pipe 7 can be used to adjust the water flow, avoiding vibration and cavitation of the pipeline and equipment caused by the small opening of the main pipeline maintenance valve, thus ensuring the safety of water filling.

[0035] The water supply pipeline 5 is also equipped with a lateral access passage for vehicles and personnel. This lateral access passage is located within the functional layout area and is arranged on the water supply pipeline before and / or after the maintenance valve 1. The inlet and outlet of the lateral access passage are closed during normal operation of the pipeline system and opened during maintenance to connect to the maintenance work area. Specifically, the lateral access passage is a tee branch pipe 9 connecting two adjacent pipe sections of the water supply pipeline. The tee branch pipe 9 is encased in the corresponding outer concrete 6 of the pipeline. Its free port (i.e., the inlet and outlet of the lateral access passage) is located on the surface of the outer concrete 6 of the pipeline near the maintenance work area and is equipped with a detachable end cap 10.

[0036] One side of the well body in the maintenance work area is set as an open opening, connecting the maintenance work area with the external unloading passage 11, and the other end of the unloading passage connects to the ground surface. Specifically, the unloading passage 11 has a U-shaped trough structure, and the net width of the trough is set according to the passage requirements, such as 3.5m. The bottom of the trough extends downward from the ground surface connection end to connect with the bottom plate of the maintenance work area. For example, it connects with the bottom plate of the maintenance work area from the ground surface with an elevation of i=10%. In this way, routine maintenance vehicles and maintenance lifting vehicles can directly enter the valve well through the unloading passage 11.

[0037] In some embodiments, the water collection well 2 is arranged on one side of the functional layout area, and the drainage pipe 3 is a DN600 reinforced concrete drainage culvert structure. It can be laid using the trench excavated by the water supply pipeline 5 and exits the well body of the functional layout area. The inner end of the drainage pipe 3 is wrapped in the concrete 6 of one of the pipelines. In addition, by taking into account the terrain conditions on both sides of the valve well, the drainage pipe 3 can be set at a slight inclination, such as an inclination of i′ = 2%, so as to discharge by gravity or by using a small gravity pump to discharge the water accumulated in the valve well.

[0038] For any other points not mentioned, please refer to existing technology.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and concept of the present utility model, should be covered within the protection scope of the present utility model.

Claims

1. A novel maintenance valve well for large-diameter buried water pipelines, wherein a water collection well is provided inside the valve well, and the water collection well is connected to a drainage pipe to drain the water accumulated in the valve well, characterized in that... The valve well includes an open well body exposed on the surface, and the well body contains a functional layout area and a maintenance work area. The water pipeline enters from one side of the well body in the functional layout area and exits from the other side, forming a corresponding exposed section within the functional layout area. The exposed section of the water pipeline is equipped with a maintenance valve. The water supply pipeline is equipped with a bypass pipe, which is located in the functional layout area. Both ends of the bypass pipe are connected to the water supply pipelines on both sides before and after the maintenance valve, and the middle section is exposed. The exposed section of the bypass pipe is equipped with a water filling valve. The water pipeline is also equipped with a lateral access passage for vehicles and personnel. The lateral access passage is located within the functional layout area and is arranged on the water pipeline in front of and / or behind the maintenance valve. The inlet and outlet of the lateral access passage are closed during normal operation of the pipeline system and are opened during maintenance to connect the maintenance work area. One side of the well body in the maintenance work area is set as an open opening, connecting the maintenance work area with the external vehicle exit passage, and the other end of the vehicle exit passage is connected to the ground surface.

2. The novel inspection valve well for large-diameter buried water pipelines according to claim 1, characterized in that, The lateral access channel is a three-way branch pipe connecting two adjacent sections of the water supply pipeline. The free port of the three-way branch pipe is the inlet and outlet of the lateral access channel, and it is equipped with a detachable end cap.

3. The novel inspection valve well for large-diameter buried water pipelines according to claim 1, characterized in that, The disembarkation passage has a U-shaped trough structure, and the bottom of the trough extends downwards from the ground connection end to connect with the bottom plate of the maintenance work area.

4. The novel inspection valve well for large-diameter buried water pipelines according to claim 1, characterized in that, The water collection well is located on one side of the functional layout area. The drainage pipe extends out of the well body of the functional layout area through the pipe trench of the water conveyance pipeline. The drainage pipe is set at a slight inclination according to the terrain to discharge water by gravity or to discharge water accumulated in the valve well by a small gravity pump.

5. The novel inspection valve well for large-diameter buried water pipelines according to claim 1, characterized in that, Within the functional layout area, corresponding to both ends of the water transmission pipeline, there are concrete pipe casings that encase the water transmission pipeline. Each concrete pipe casing is integrated with the corresponding inner wall of the well body in the functional layout area. Each side entrance / exit channel is encased in the corresponding pipe's outer concrete casing, with the entrance and exit located on the surface of the pipe's outer concrete casing closest to the maintenance work area. Both ends of the bypass pipe are respectively encased in the concrete surrounding the two pipes; The inner end of the drainage pipe is encased in concrete within one of the pipes.

6. The novel inspection valve well for large-diameter buried water pipelines according to claim 1, characterized in that, The well body is mainly composed of retaining walls.

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