A small-footprint pressure pipeline exhaust valve well

Abstract

This utility model belongs to the technical field of exhaust valve wells, and discloses a small-footprint pressure pipeline exhaust valve well. The well body is conical, and a gate valve sleeve is installed at the wellhead. The connection between the gate valve sleeve and the well body is sealed by a waterproof structure, and the well body and the waterproof structure are externally covered with a waterproof layer. The location where the main pipe passes through the well body is sealed with a waterproof sleeve. An expansion joint is installed on the main pipe inside the well body. An exhaust branch pipe is connected to the main pipe inside the well, and the exhaust branch pipe is connected to the exhaust valve through a reinforced soft-seal gate valve. This utility model optimizes the design of the exhaust valve well, greatly reducing the footprint of the exhaust valve well; and the shallow well body and perfect waterproof measures can greatly reduce operation and maintenance costs. In addition, the reinforced soft-seal gate valve can effectively prevent unauthorized connections to the pressure pipeline; the exhaust valve can both discharge gas in the pipeline to avoid increasing internal resistance and draw in air when the pipeline is under negative pressure to avoid vibration or rupture, thus increasing the safety of pressure pipeline operation.

Description

Technical Field

[0001] This utility model relates to an exhaust valve well, specifically a pressure pipeline exhaust valve well that occupies a small area. Background Technology

[0002] Traditional air venting valve wells have large diameters and require a large footprint, making them difficult to implement in areas with limited land. Furthermore, traditional air venting valve wells are deep, with complex structures including well walls, shafts, covers, and supports, resulting in long construction periods and high costs. Additionally, the depth of the well necessitates personnel climbing ladders down to the bottom for maintenance, which is difficult due to the confined space and poor air circulation. The older the well, the more prone the ladders are to corrosion and weakening, posing significant safety hazards for maintenance personnel. Moreover, traditional air venting valve wells often have a gate valve below the air vent, allowing for unauthorized connections to pressure pipelines. This not only causes economic losses for the pressure pipeline operator but also poses a significant risk to the safe operation of the pressure pipeline. Utility Model Content

[0003] This utility model aims to solve the technical problems of existing exhaust valve wells, such as large footprint, deep chamber, complex structure, long construction period, high cost, inconvenient maintenance and operation, and the existence of unauthorized connections to pressure pipelines. It provides a pressure pipeline exhaust valve well with a small footprint, shallow burial depth, quick construction, low cost, convenient maintenance, and greater safety and reliability.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model provides a pressure pipeline exhaust valve well with a small footprint, including a base plate, a well body located on the base plate, and an internal main pipe disposed inside the well body; the well body is a cone with a top cross-sectional dimension smaller than the bottom cross-sectional dimension, and a gate valve sleeve is provided at the well opening at the top of the well body; the connection between the gate valve sleeve and the well body is sealed by a waterproof structure, and the well body and the waterproof structure are covered with a waterproof layer;

[0006] The main pipe inside the well is connected to the pressure main pipe outside the well body by a flange, and the part where the main pipe passes through the well body is sealed with a waterproof sleeve; both ends of the main pipe inside the well body are supported by piers set outside the well body, and the main pipe inside the well body is supported by supports; the main pipe inside the well body is equipped with an expansion joint, which is located inside the well body.

[0007] The main pipe inside the well is connected to an exhaust branch pipe, which is connected to an exhaust valve via a reinforced soft-seal gate valve.

[0008] Furthermore, the inner surface of the well body is plastered with cement mortar, and the thickness of the cement mortar plaster is 15-30mm.

[0009] Furthermore, the waterproof layer is an asphalt waterproof membrane layer.

[0010] Furthermore, the base slab is made of C20-C30 plain concrete; the base slab is made by on-site formwork casting or precast base slab.

[0011] Furthermore, the main pipe inside the well is made of steel.

[0012] Furthermore, the waterproof sleeve is a type A rigid waterproof sleeve.

[0013] Furthermore, the distance between the pier and the outer wall of the well body is ≥300mm.

[0014] Furthermore, the pier is equipped with a thrust wing ring.

[0015] Furthermore, the expansion joint adopts a double-flange force transmission joint.

[0016] Furthermore, the exhaust valve is a composite exhaust valve, which has the functions of both releasing positive and negative pressure.

[0017] The beneficial effects of this utility model are:

[0018] (I) The present invention provides a pressure pipeline exhaust valve well with a small footprint. The well body is conical, which has a small footprint, stable and compact structure, shallow burial depth, faster construction and low cost.

[0019] (II) The pressure pipeline exhaust valve well of this utility model has a small footprint and a gate valve sleeve installed at the wellhead at the top of the well body, which makes maintenance possible from the ground, and makes the later operation and maintenance more convenient and safer.

[0020] (III) The present invention provides a pressure pipeline exhaust valve well with a small footprint. The main pipe inside the well is connected to a reinforced soft-seal gate valve through an exhaust branch pipe, which can effectively prevent the occurrence of unauthorized connection of pressure pipelines directly to the gate valve and effectively ensure the safe operation of pressure pipelines.

[0021] (iv) This utility model provides a small-footprint pressure pipeline exhaust valve well. The main pipe inside the well is connected to a reinforced soft-seal gate valve via an exhaust branch pipe. This composite exhaust valve effectively prevents water hammer. When the pressure pipeline is under positive pressure, the composite exhaust valve opens, releasing the positive pressure and preventing the pressure pipeline from rupturing due to high pressure. When the pressure pipeline is under negative pressure, the composite exhaust valve opens, drawing in gas to release the negative pressure and preventing the pressure pipeline from being compressed and deformed due to negative pressure. Attached Figure Description

[0022] Figure 1 This is a front view structural schematic diagram of the pressure pipeline exhaust valve well provided by this utility model;

[0023] Figure 2 This is a top view of the pressure pipeline exhaust valve well provided by this utility model;

[0024] Wherein: 1—gate valve sleeve; 2—air vent valve; 3—reinforced soft-seal gate valve; 4—air vent branch pipe; 5—expansion joint; 6—waterproof sleeve; 7—thrust wing ring; 8—main pipe inside the well; 9—flange; 10—pressure main pipe; 11—waterproof structure; 12—well body; 13—waterproof layer; 14—support; 15—base plate; 16—stabilizer. Detailed Implementation

[0025] The present invention will be further described in detail below through specific embodiments. The following embodiments can enable those skilled in the art to have a more comprehensive understanding of the present invention, but do not limit the present invention in any way.

[0026] Traditional air venting valve wells have a minimum diameter of 1200mm and a maximum of 2400mm, which limits their use in projects with limited land, such as those adding pressure pipelines under existing roads. The minimum depth of traditional air venting valve wells is 1500mm, resulting in a complex structure, requiring large quantities of steel reinforcement and concrete during construction, leading to long construction periods and high costs. Furthermore, the depth of traditional air venting valve wells, with the main pipe passing through the well, results in confined space, inconvenient maintenance and operation, and the ladders on the well walls are prone to corrosion, posing a safety hazard. Traditional air venting valve wells also lack anti-theft and anti-water hammer functions.

[0027] To avoid the above phenomenon, such as Figure 1 and Figure 2 As shown, this embodiment provides a small-footprint pressure pipeline exhaust valve well, including a well body 12, a gate valve sleeve 1, a waterproof structure 11, a waterproof layer 13, a base plate 15, an inner main pipe 8, a brick support 14, a waterproof sleeve 6, a retaining block 16, a thrust ring 7, an expansion joint 5, an exhaust branch pipe 4, a reinforced soft-seal gate valve 3, an exhaust valve 2, a flange 9, and a pressure main pipe 10.

[0028] The well body 12 is a cone shape with a top cross-sectional dimension smaller than the bottom cross-sectional dimension. This cone-shaped well body 12, with its gradually increasing size from top to bottom, is structurally stable and can effectively cope with the high load conditions of the exhaust valve well located under the driveway. Furthermore, the cone shape of the well body 12 eliminates the need for the traditional well casing required for exhaust valve wells, resulting in a simpler and more compact structure that significantly reduces the footprint of the exhaust valve well. The well body 12 is constructed of ordinary bricks, with the brick material being MU7.5-MU15 and the mortar being M7.5-M15.

[0029] A gate valve sleeve 1 is installed at the wellhead at the top of the well body 12. Because the gate valve sleeve 1 is relatively short, during the later maintenance of the exhaust valve well, relevant personnel can operate from the ground and directly open the cover of the gate valve sleeve 1. The operation is simple, convenient, and safer, with no risk of accidents. In this embodiment, the selected gate valve sleeve 1 has a specification of φ150mm and l=250mm.

[0030] To prevent surface or groundwater from entering the well chamber through the gap at the connection between the gate valve sleeve 1 and the well body 12, a waterproof structure 11 is used at the connection. The waterproof structure 11 is used to seal the connection between the gate valve sleeve 1 and the well body 12. Preferably, the waterproof structure 11 is made of M7.5-M15 mortar.

[0031] The inner surface of the well body 12 is plastered with 15-30mm thick 1:2 cement mortar. At the same time, the exterior of the well body 12 and the waterproof structure 11 is covered with a waterproof layer 13, which is preferably made of asphalt waterproof membrane. The use of cement mortar plaster and waterproof layer 13 can effectively prevent groundwater from seeping into the well body 12, making the waterproof performance of the air vent well even better.

[0032] The well body 12 is situated on the base slab 15, which is made of C20-C30 plain concrete. During construction, the base slab 15 can be cast on-site using formwork. Alternatively, if the burial depth of the main pipe 8 within the well is approximately the same, a precast base slab can be used. Using a precast base slab can effectively save construction time and costs. Therefore, the specific method of constructing the base slab 15 can be flexibly selected according to project conditions, demonstrating strong adaptability.

[0033] Because the pressure main pipe 10 is made of various materials, the well-inside main pipe 8 is made of steel pipe, and the well-inside main pipe 8 is connected to the pressure main pipe 10 outside the well body 12 by a flange 9.

[0034] A waterproof sleeve 6 is used to stop water flow at the point where the main pipe 8 passes through the well body 12. In this embodiment, the waterproof sleeve 6 is a rigid waterproof sleeve (Type A), which has the advantages of simple structure, low cost, and convenient procurement and installation.

[0035] The main pipe 8 inside the well is supported at both ends by anchor blocks 16 located outside the well body 12. The distance between the anchor blocks 16 and the outer wall of the well body 12 is typically ≥300mm. Thrust rings 7 are installed in the anchor blocks 16. The thrust rings 7 can balance the axial thrust generated during the operation of the main pipe 8 inside the well, effectively reducing the impact of vibration on the stability of the main pipe 8. The anchor blocks 16 and thrust rings 7 located outside the well body 12 can effectively reduce the impact of vibration caused by pressure changes in the pressure main pipe 10 on the exhaust valve well, extending its service life.

[0036] The main pipe 8 inside the well is supported by brick supports 14 inside the well body 12 to increase the stability of the main pipe 8 inside the well body 12.

[0037] An expansion joint 5 is installed in the main pipe 8 inside the well body 12. The expansion joint 5 can effectively solve the radial displacement caused by pressure or temperature changes during the operation of the main pipe 8, ensuring the stable operation of the main pipe 8. In this embodiment, the expansion joint 5 adopts a double flange force transmission joint.

[0038] The main well pipe 8 is connected to an exhaust branch pipe 4, which is perpendicular to the axis of the main well pipe 8. The exhaust branch pipe 4 is connected to an exhaust valve 2 via a reinforced soft-seal gate valve 3. The exhaust valve 2 is a composite exhaust valve, which has both positive and negative pressure venting functions. The reinforced soft-seal gate valve 3 has an anti-theft function.

[0039] When there is gas in the main pipe 8 of the well, the gas will accumulate at the highest point along the main pipe 8, and then reach the exhaust valve 2 through the exhaust branch pipe 4. The pressure in the exhaust valve 2 will gradually increase as the accumulated gas increases. When a certain pressure threshold is reached, the exhaust valve 2 will automatically open to release the gas in the pipeline. The exhaust valve 2 is a composite exhaust valve. The composite exhaust valve can not only promptly release gas in the main pipe 8 of the well to clear the pipeline and restore the flow capacity of the main pipe 8, but also, when the water supply end experiences a power outage or the water pump suddenly stops, the pressure main pipe 10 will experience water hammer. Water hammer will cause severe vibration and negative pressure in the pipeline. At this time, the composite exhaust valve 2 will quickly draw in air to reduce the negative pressure generated by water hammer, prevent the vibration and rupture of the pressure main pipe 10, and play a good protective role for the pressure main pipe 10. Because the burial depth of the pressure main pipe 10 in different nodes of the well is different, the depth of the main pipe 8 and the exhaust valve well can be flexibly adjusted according to the burial depth of the pressure main pipe 10.

[0040] The encrypted soft-seal gate valve 3 has a strong anti-theft water function and requires special tools to open. The encrypted soft-seal gate valve 3 installed on the vent branch pipe 4 can effectively prevent private individuals from removing the vent valve 2 and directly connecting the pressure pipeline to the gate valve.

[0041] As can be seen, this utility model optimizes the design of the exhaust valve well. Its well body 12 is conical, resulting in a more compact structure and significantly reducing the floor space required, making it particularly suitable for use in areas with limited space. Furthermore, the simple structure of this exhaust valve well effectively reduces construction time and costs. Simultaneously, due to the shallow well body 12 and comprehensive waterproofing measures, operation is simple, greatly reducing operating and maintenance costs. In addition, the encrypted soft-seal gate valve 3 used within the exhaust valve well effectively prevents unauthorized connections to pressure pipelines. The exhaust valve 2 used within the exhaust valve well can both discharge gas from the main pipe 8, preventing increased resistance within the main pipe 8, and draw in air when negative pressure occurs in the main pipe 8, preventing vibration or rupture of the main pipe 8 and increasing the safety of pressure pipeline operation.

[0042] Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many specific modifications under the guidance of the present invention without departing from the spirit of the invention and the scope of protection of the claims, and these modifications all fall within the protection scope of the present invention.

Claims

1. A small footprint pressure main vent vault comprising a floor, a shaft seated on the floor, a main in-shaft pipe disposed inside the shaft; characterized in that, The well body is a cone shape with a top cross-sectional dimension smaller than the bottom cross-sectional dimension, and a gate valve sleeve is installed at the wellhead at the top of the well body; the connection between the gate valve sleeve and the well body is sealed by a waterproof structure, and the well body and the waterproof structure are covered with a waterproof layer; The main pipe inside the well is connected to the pressure main pipe outside the well body by a flange, and the part where the main pipe passes through the well body is sealed with a waterproof sleeve; both ends of the main pipe inside the well body are supported by piers set outside the well body, and the main pipe inside the well body is supported by supports; the main pipe inside the well body is equipped with an expansion joint, which is located inside the well body. The main pipe inside the well is connected to an exhaust branch pipe, which is connected to an exhaust valve via a reinforced soft-seal gate valve.

2. A small footprint pressure conduit vent vault in accordance with claim 1, wherein, The inner surface of the well body is plastered with cement mortar, and the thickness of the cement mortar plaster is 15-30mm.

3. A small footprint pressure conduit vent vault in accordance with claim 1, wherein, The waterproof layer is made of asphalt waterproof membrane.

4. A small footprint pressure conduit vent vault in accordance with claim 1, wherein, The base slab is made of C20-C30 plain concrete; the base slab is made by on-site formwork casting or precast base slab.

5. A small footprint force main air relief vault in accordance with claim 1, wherein, The main pipe inside the well is made of steel.

6. A small footprint force main air relief vault in accordance with claim 1, wherein, The waterproof sleeve is a type A rigid waterproof sleeve.

7. A small footprint force main air relief vault in accordance with claim 1, wherein, The distance between the pier and the outer wall of the well body is ≥300mm.

8. A small footprint force main air relief vault in accordance with claim 1, wherein, The pier is equipped with a thrust wing ring.

9. A small footprint force main air relief vault in accordance with claim 1, wherein, The expansion joint is a double-flange force transmission joint.

10. A small footprint force main air relief vault in accordance with claim 1, wherein, The exhaust valve is a composite exhaust valve, which has the functions of releasing both positive and negative pressure.

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