Combined drainage well for pressure pipeline

Abstract

The utility model provides a combined drainage well for a pressure pipeline. The combined drainage well can meet the drainage requirement of the pressure pipeline more intensively and efficiently. Comprising a pipeline assembly and a well body, the pipeline assembly comprises a water drain pipe, a water drain valve and an overflow pipe, a partition wall is arranged in the well body to divide the interior of the well body into a dry chamber and a wet chamber which are adjacent, the water drain pipe and the water drain valve connected with the water drain pipe are arranged in the dry chamber, and the outlet end of the water drain pipe is communicated with the wet chamber; and the overflow pipe is communicated with the wet chamber.

Description

Technical Field

[0001] The utility model relates to the technical field of drainage wells, in particular to a combined drainage well for a pressure pipeline. Background Art

[0002] During the hydraulic test at the installation stage and the troubleshooting at the operation stage, the fluid medium in the pressure pipeline needs to be emptied. Usually, a complete set of drainage devices (sometimes also called mud discharge devices) is formed by the drainage tee, drainage valve and drainage pipe installed on the pipeline, so that the fluid medium in the pipeline can be discharged from the main pipe in an organized manner. The drainage tee is connected from the bottom of the main pipe, and a drainage valve for controlling the drainage pipe switch and flow is installed on the drainage pipe connected to the outlet end of the drainage tee. Then the discharged fluid medium is transported to the designated water body or space through the overflow pipe.

[0003] Usually, two circular inspection wells are set on the drainage pipeline to respectively perform operations such as valve opening and flow control so that the pipeline is in a dry state during operation, and to temporarily store and discharge the fluid medium behind the valve so that the pipeline is in a wet state during operation. However, independently setting up two inspection wells with different functions not only occupies a large area of ​​land, but also the land between the two wells cannot be used for other purposes, which actually leads to insufficient intensive land use. At the same time, it is generally necessary to excavate the foundation pit of each inspection well separately during the construction process, resulting in a large amount of foundation pit maintenance work and a high cost. In addition, the components in the two inspection wells are independent of each other, which is not conducive to the integrated and assembled construction of the drainage device, and the construction efficiency is low. Utility Model Content

[0004] In view of the above problems, the utility model provides a combined drainage well for a pressure pipeline, which can meet the drainage needs of the pressure pipeline in a more intensive and efficient manner.

[0005] The utility model adopts the following technical scheme: a combined drainage well for a pressure pipeline, comprising a pipeline assembly and a well body, wherein the pipeline assembly comprises a drainage pipe, a drainage valve, and an overflow pipe, and is characterized in that a partition wall is provided in the well body to divide the interior of the well body into adjacent dry chambers and wet chambers, the drainage pipe and the drainage valve connected thereto are arranged in the dry chamber, and the outlet end of the drainage pipe is connected to the wet chamber; the overflow pipe is connected to the wet chamber.

[0006] Furthermore, the well body is a rectangular structure, the well body is buried underground, the top of the well body is connected to a cover plate, and the cover plate is flush with the ground;

[0007] Furthermore, the bottom surface of the well body is paved with a gravel cushion layer with a thickness of 100mm to 200mm, and a reinforced concrete bottom plate with a thickness of 300mm to 400mm is provided on the gravel cushion layer;

[0008] Furthermore, a water collection pit is provided in the dry chamber, the water collection pit is seated in the reinforced concrete bottom plate, and the reinforced concrete bottom plate located in the dry chamber is inclined toward the water collection pit;

[0009] Furthermore, the drain pipe and the drain valve connected thereto are centrally arranged in the dry chamber, and a buttress for supporting the drain valve is arranged in the dry chamber;

[0010] Furthermore, the drainage pipe is connected to a main pipe arranged outside the well body, and the main pipe is connected to a drainage bottom tee;

[0011] Furthermore, the diameter of the drain pipe is 1 / 5 to 1 / 4 of the diameter of the main pipe, and the drain pipe is arranged to be inclined downward from the dry chamber to the wet chamber; the drain valve and the outlet end of the drain bottom tee are located at the same height;

[0012] Furthermore, the dry chamber and the partition wall are both provided with a water outlet for passing the drain pipe, and the upper part of the wet chamber is provided with an overflow outlet, and the height of the overflow outlet is higher than the height of the water outlet on the partition wall;

[0013] Furthermore, the drain pipe located at the water outlet and the overflow pipe located at the overflow outlet are both provided with sealing protective sleeves.

[0014] The beneficial effect of the utility model is that it divides the well body into two functional areas, dry and wet, through a partition wall. Valves can be placed in the dry area, and maintenance personnel can go up and down, stand and operate. The wet area can accumulate a certain volume of fluid medium and is convenient for cleaning the bottom mud in the well chamber. Therefore, compared with two independently built inspection wells, the overall footprint is reduced, reflecting the good effect of intensive land use, and is more conducive to integrated construction and prefabricated construction, improving construction efficiency, and having good economic use value. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the assembly structure of the utility model;

[0016] Figure 2 yes Figure 1 Middle AA section view;

[0017] Figure 3 yes Figure 1 Middle BB section;

[0018] Figure 4 yes Figure 1 Mid-CC section view. DETAILED DESCRIPTION

[0019] like Figure 1 to Figure 4As shown, the utility model is a combined drainage well for a pressure pipeline, comprising a pipeline assembly and a well body, wherein the pipeline assembly comprises a drainage pipe 2, a drainage valve 3, and an overflow pipe 4, the drainage pipe 2 is connected to a main pipe 5 arranged outside the well body, the main pipe 5 is connected to a drainage bottom tee 1, a partition wall 6 is provided in the well body to divide the inside of the well body into adjacent dry chambers 7 and wet chambers 8, the height and width of the partition wall 6 are the same as the outer dimensions of the well body, the thickness of the partition wall 6 is determined according to the structural strength, preferably 200-300 mm; the drainage pipe 2 and the drainage valve 3 connected thereto are arranged in the dry chamber 7, and the outlet end of the drainage pipe 2 is connected to the wet chamber 8; the overflow pipe 4 is connected to the wet chamber 8, and the fluid medium can overflow from the wet chamber 8 to a receiving water body such as a river through the overflow pipe 4.

[0020] The well body is a rectangular structure, buried underground, with a cover plate 9 connected to the top of the well body, which is flush with the ground; the net height inside the well body is not less than 1800mm; a 100mm thick gravel cushion layer is laid on the bottom of the well body (not shown in the figure), and a 300mm thick reinforced concrete bottom plate 10 is provided on the gravel cushion layer; a rectangular well wall can be built around the well body with bricks or reinforced concrete; a sump 11 is provided in the dry chamber 7, and the sump 11 is seated in the reinforced concrete bottom plate 10, and the reinforced concrete bottom plate 10 located in the dry chamber 7 is inclined toward the sump 11; the drain pipe 2 and the drain valve 3 connected thereto are centrally arranged in the dry chamber 7 on the plane, and a maintenance operation space of not less than 600mm can be reserved on both sides, and a maintenance operation space of not less than 500mm can be reserved at the bottom of the drain pipe 2 and the drain valve 3, and a pier 12 for supporting the drain valve 3 is built in the dry chamber 7.

[0021] The diameter of the drain pipe 2 is 1 / 5 of the diameter of the main pipe 5, and the drain pipe 2 is arranged to be inclined downward from the dry chamber 7 to the wet chamber 8, so as to facilitate the fluid medium in the pipeline to flow into the wet chamber 8; and the outlet end of the drainage bottom tee 1 is located at the same height as the drain valve 3, and the drain valve 3 adopts a gate valve or a butterfly valve, and the specification is the same as the outlet size of the drainage bottom tee 1; the dry chamber 7 and the partition wall 6 are both provided with a water outlet 13 for passing the drain pipe 2, and the upper part of the wet chamber 8 is provided with an overflow port 14, and the height of the overflow port 14 is higher than the height of the water outlet 13 on the partition wall 6.

[0022] The drain pipe 2 at the water outlet 13 and the overflow pipe 4 at the overflow outlet 14 are both provided with sealing protective sleeves (not shown in the figure), which can be used for waterproof sealing through walls.

[0023] In the utility model, a solid partition wall 6 is used to divide the well body into two functional areas, a dry area and a wet area. Valves can be placed in the dry area, and maintenance personnel can go up and down, stand and operate. The wet area can store a certain volume of fluid medium and can facilitate the cleaning of the bottom mud in the well chamber. The combined drainage well formed has a smaller footprint than two independently built inspection wells, which reflects the good effect of intensive land use. At the same time, because different well chambers share the well wall, the total volume is smaller than that of two independently built inspection wells, which reduces the amount of foundation pit maintenance work and indirectly saves construction costs. In addition, the cover plate 9, sand and gravel cushion layer, and reinforced concrete bottom plate 10 of the well body are all connected as a whole, which is more conducive to integrated construction and prefabricated construction, thereby improving construction efficiency.

[0024] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A combined drainage well for a pressure pipeline, comprising a pipeline assembly and a well body, wherein the pipeline assembly comprises a drainage pipe, a drainage valve, and an overflow pipe, characterized in that: A partition wall is provided in the well body to divide the interior of the well body into adjacent dry chamber and wet chamber. The drain pipe and the drain valve connected thereto are arranged in the dry chamber, and the outlet end of the drain pipe is connected to the wet chamber; the overflow pipe is connected to the wet chamber.

2. A combined drainage well for a pressure pipeline according to claim 1, characterized in that: The well body is a rectangular structure, and the well body is buried underground. The top of the well body is connected to a cover plate, and the cover plate is flush with the ground.

3. A combined drainage well for a pressure pipeline according to claim 1, characterized in that: The bottom surface of the well body is paved with a sand and gravel cushion layer with a thickness of 100mm to 200mm, and a reinforced concrete bottom plate with a thickness of 300mm to 400mm is arranged on the sand and gravel cushion layer.

4. A combined drainage well for a pressure pipeline according to claim 3, characterized in that: A water collection pit is arranged in the dry chamber, and the water collection pit is seated in the reinforced concrete bottom plate, and the reinforced concrete bottom plate located in the dry chamber is inclined toward the water collection pit.

5. The combined drainage well for a pressure pipeline according to claim 1, characterized in that: The drain pipe and the drain valve connected thereto are centrally arranged in the dry chamber, and a buttress for supporting the drain valve is arranged in the dry chamber.

6. A combined drainage well for a pressure pipeline according to claim 1, characterized in that: The drainage pipe is connected to a main pipe arranged outside the well body, and the main pipe is connected to a drainage bottom tee.

7. A combined drainage well for a pressure pipeline according to claim 6, characterized in that: The diameter of the drain pipe is 1 / 5 to 1 / 4 of the diameter of the main pipe, and the drain pipe is arranged to be inclined downward from the dry chamber to the wet chamber; the drain valve and the outlet end of the drain bottom tee are located at the same height.

8. The combined drainage well for a pressure pipeline according to claim 1, characterized in that: The dry chamber and the partition wall are both provided with water outlets for passing the drain pipe, and the upper part of the wet chamber is provided with an overflow outlet, and the height of the overflow outlet is higher than the height of the water outlet on the partition wall.

9. A combined drainage well for a pressure pipeline according to claim 8, characterized in that: The drain pipe located at the water outlet and the overflow pipe located at the overflow outlet are both provided with sealing protective sleeves.

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