A steel well structure

Abstract

The utility model discloses a kind of ground pipe steel well structures, solve the technical problem of existing technology ground pipe steel well installation difficulty when encountering high underground water level installation condition. The utility model includes steel well, steel well well lid and pipeline interface, further include prefabricated concrete counterweight that is compatible with steel well assembly condition, prefabricated concrete counterweight is embedded with steel plate, steel well bottom is equipped with the lug for being connected with the welding of steel plate, steel well is connected with prefabricated concrete counterweight by the welding of lug and steel plate. The utility model is simple in structure, scientific and reasonable in design, convenient to use, prefabricated concrete counterweight is added in ground pipe steel well bottom, so it can reduce precipitation elevation, shorten precipitation time, and prefabricated concrete counterweight can be prefabricated in factory, after prefabrication, directly hoist to assembly condition, can avoid operation in underground water level.

Description

Technical Field

[0001] This utility model belongs to the field of chemical technology, specifically relating to a steel well structure for underground pipes. Background Technology

[0002] Steel wells for underground pipelines offer numerous advantages: high strength and toughness, enabling them to withstand significant pressure and external forces, absorbing energy through deformation to ensure the safety of the pipeline system; strong sealing performance, with welded connections effectively preventing liquid leakage and protecting groundwater resources; prefabricated components for convenient construction, shortening the construction period, and lightweight for easy installation and transportation; customizable shapes and sizes for flexible combination and connection, adapting to complex geological conditions and pipeline layouts. Therefore, steel wells are increasingly widely used in underground pipelines. However, in areas with high groundwater levels, such as salt lake areas, the high groundwater level and strong corrosiveness pose significant challenges to the installation of steel wells, sometimes making installation impossible. The main problems are as follows:

[0003] To achieve anti-buoyancy, steel wells require a concrete foundation. The construction process includes: site excavation and leveling → fine sand leveling → asphalt concrete subbase pouring → foundation reinforcement binding → formwork and embedded part installation → concrete pouring → formwork removal → foundation corrosion protection → steel well placement → welding of the steel well to the foundation plate → connection and installation of the steel well to the pipeline → interface corrosion protection treatment → backfilling. All these processes must be carried out in a water-free environment; that is, the water level in the pit must not exceed the bottom elevation of the subbase before backfilling is completed. Therefore, to ensure the smooth installation of the steel well, continuous dewatering is necessary to prevent groundwater from overflowing the subbase and causing corrosion. Prolonged dewatering can lead to corrosion and salt buildup on the drainage pump, especially when encountering groundwater veins. This makes the installation of the steel well even more difficult, consuming significant labor and time costs, and also jeopardizing installation quality. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a steel well structure for ground pipes, so as to solve the technical problem of installation difficulties when the existing steel well tools for ground pipes encounter high groundwater levels.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A steel manhole structure includes a steel manhole, a steel manhole cover, and a pipe interface. It also includes a precast concrete counterweight block adapted to the assembly conditions of the steel manhole. A steel plate is embedded in the precast concrete counterweight block. The bottom of the steel manhole is provided with lugs for welding to the steel plate. The steel manhole is connected to the precast concrete counterweight block by welding the lugs to the steel plate.

[0007] Furthermore, it also includes embedded steel rings pre-embedded in the precast concrete counterweight block. There are four steel plates, which are evenly distributed around the embedded steel rings. The number of lugs is the same as the number of steel plates and they correspond one-to-one.

[0008] Furthermore, the precast concrete counterweights are in the shape of square prisms, rhombus prisms, elliptical prisms, or cylinders, with a height of 100~500mm.

[0009] Furthermore, the height of the precast concrete counterweight is 300mm.

[0010] Furthermore, the outer surface of the precast concrete counterweight is coated with an anti-corrosion layer A, which has a thickness of 200~300μm.

[0011] Furthermore, an anti-corrosion layer B is coated on the outer surface of the anti-corrosion layer A, and the thickness of the anti-corrosion layer B is 200~300μm.

[0012] Furthermore, the total thickness of anti-corrosion layer A and anti-corrosion layer B is 500~600μm.

[0013] Furthermore, both anti-corrosion layer A and anti-corrosion layer B are epoxy asphalt coatings.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This utility model features a simple structure, scientific and reasonable design, and convenient use. Based on the concept of prefabricated construction, it improves upon the traditional steel manhole with underground pipes by adding a precast concrete counterweight block to the bottom of the manhole. This precast concrete counterweight block can be prefabricated in a factory and directly hoisted to the assembly site, avoiding prolonged operation within groundwater levels. The steel manhole is then hoisted onto the precast concrete counterweight block, and the steel plate is welded to the support lugs to complete the secure connection between the manhole and the counterweight block. After welding, the welded areas are recoated with an epoxy asphalt coating for corrosion protection. The process only requires a short time to pump the groundwater level below the precast concrete counterweight block, effectively shortening the dewatering time. Compared to traditional methods, this utility model saves all steps from asphalt subbase laying to concrete corrosion protection, effectively shortening the installation schedule and allowing the construction site to focus on installation work. This results in highly adaptable installation on the construction site, ensuring operability, speed, efficiency, and reliability of the construction.

[0016] The fabrication of the precast concrete counterweights of this invention is carried out in a clean factory environment, utilizing stable equipment and professional technicians, which helps ensure processing accuracy and quality. Furthermore, the shape (such as square, round, or other irregular structures) and weight of the counterweights can be flexibly designed according to the actual space constraints and stability requirements of the on-site installation location.

[0017] The anti-corrosion layer of this invention is processed in a factory under controlled environment, making its quality easier to guarantee and the operation process more convenient.

[0018] In summary, this prefabricated steel well installation process, by using precast concrete counterweights, simplifies the on-site process, shortens the installation cycle, reduces dewatering costs, and improves the foundation processing quality, adaptability, and corrosion resistance reliability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the precast concrete counterweight block structure of this utility model.

[0021] Figure 3 for Figure 2 View from AA.

[0022] Figure 4 This is a schematic diagram of the steel well support lug of this utility model.

[0023] Figure 5 This is a schematic diagram showing the connection between the support lug and the steel plate of this utility model.

[0024] The names corresponding to the reference numerals in the attached figures are as follows:

[0025] 1-Steel well, 2-Steel well cover, 3-Pipeline interface, 4-Precast concrete counterweight, 5-Steel plate, 6-Support lug, 7-Embedded steel ring, 8-Anti-corrosion layer A, 9-Anti-corrosion layer B. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] Example 1

[0028] like Figure 1-5 As shown, the present invention provides a steel manhole structure for underground pipes, including a steel manhole 1, a steel manhole cover 2, and a pipe interface 3. Its characteristic feature is that it also includes a precast concrete counterweight block 4 adapted to the assembly conditions of the steel manhole 1. A steel plate 5 is pre-embedded on the precast concrete counterweight block 4. The bottom of the steel manhole 1 is provided with a support lug 6 for welding to the steel plate 5. The steel manhole 1 is connected to the precast concrete counterweight block 4 through welding the support lug 6 to the steel plate 5.

[0029] This utility model features a simple structure, scientific and reasonable design, and ease of use. It replaces the foundation construction process, which originally required completion in the on-site pit, with the prefabrication of precast concrete counterweight blocks that meet technical requirements in a factory. This eliminates all procedures from asphalt subbase laying to concrete corrosion protection, significantly shortening the installation time and allowing the construction site to focus on installation work. This minimizes the time needed for dewatering, achieving highly adaptable installation on the construction site and ensuring operability, speed, efficiency, and quality reliability. The precast concrete counterweight block 4 is internally reinforced with an integral mesh structure.

[0030] Example 2

[0031] like Figure 1-5 As shown, the present invention provides a steel manhole structure for underground pipes, including a steel manhole 1, a steel manhole cover 2, and a pipe interface 3. Its characteristic feature is that it also includes a precast concrete counterweight block 4 adapted to the assembly conditions of the steel manhole 1. A steel plate 5 is pre-embedded on the precast concrete counterweight block 4. The bottom of the steel manhole 1 is provided with a support lug 6 for welding to the steel plate 5. The steel manhole 1 is connected to the precast concrete counterweight block 4 through welding the support lug 6 to the steel plate 5.

[0032] This utility model also includes a pre-embedded steel ring 7 embedded in the precast concrete counterweight block 4, and four steel plates 5, which are evenly distributed around the pre-embedded steel ring 7. The number of lugs 6 is the same as that of the steel plates 5 and they correspond one-to-one.

[0033] This embodiment 2 provides a more preferred technical solution based on embodiment 1. Specifically, it also includes embedded steel rings 7 pre-embedded in the precast concrete counterweight block 4, and four steel plates 5 evenly distributed circumferentially on the embedded steel rings 7. The number of lugs 6 is the same as that of the steel plates 5 and they correspond one-to-one. Through the synergistic effect of the embedded steel rings, the circumferentially distributed steel plates, and the lugs, the circumferentially balanced distribution and reliable transmission of load are achieved, thereby improving the overall structural stability.

[0034] Example 3

[0035] like Figure 1-5 As shown, the present invention provides a steel manhole structure for underground pipes, including a steel manhole 1, a steel manhole cover 2, and a pipe interface 3. Its characteristic feature is that it also includes a precast concrete counterweight block 4 adapted to the assembly conditions of the steel manhole 1. A steel plate 5 is pre-embedded on the precast concrete counterweight block 4. The bottom of the steel manhole 1 is provided with a support lug 6 for welding to the steel plate 5. The steel manhole 1 is connected to the precast concrete counterweight block 4 through welding the support lug 6 to the steel plate 5.

[0036] This utility model also includes a pre-embedded steel ring 7 embedded in the precast concrete counterweight block 4, and four steel plates 5, which are evenly distributed around the pre-embedded steel ring 7. The number of lugs 6 is the same as that of the steel plates 5 and they correspond one-to-one.

[0037] The precast concrete counterweight 4 is in the shape of a square column, rhombus column, elliptical column, or cylinder, with a height of 100~500mm, preferably 300mm.

[0038] This embodiment 3 provides a more preferred technical solution based on embodiment 2. Specifically, the precast concrete counterweight 4 is in the shape of a square column, rhombus column, elliptical column, or cylinder, with a height of 100~500mm; the preferred height of the precast concrete counterweight 4 is 300mm. Depending on the specific limitations of the installation location, the counterweight is designed as a square, circular, or other irregular shape to meet the requirements of weight distribution and stability.

[0039] Example 4

[0040] like Figure 1-5 As shown, the present invention provides a steel manhole structure for underground pipes, including a steel manhole 1, a steel manhole cover 2, and a pipe interface 3. Its characteristic feature is that it also includes a precast concrete counterweight block 4 adapted to the assembly conditions of the steel manhole 1. A steel plate 5 is pre-embedded on the precast concrete counterweight block 4. The bottom of the steel manhole 1 is provided with a support lug 6 for welding to the steel plate 5. The steel manhole 1 is connected to the precast concrete counterweight block 4 through welding the support lug 6 to the steel plate 5.

[0041] This utility model also includes a pre-embedded steel ring 7 embedded in the precast concrete counterweight block 4, and four steel plates 5, which are evenly distributed around the pre-embedded steel ring 7. The number of lugs 6 is the same as that of the steel plates 5 and they correspond one-to-one.

[0042] The precast concrete counterweight 4 is in the shape of a square column, rhombus column, elliptical column, or cylinder, with a height of 100~500mm, preferably 300mm.

[0043] The outer surface of the precast concrete counterweight 4 is coated with an anti-corrosion layer A8, which has a thickness of 200~300μm.

[0044] The outer surface of the anti-corrosion layer A8 is coated with an anti-corrosion layer B9, which has a thickness of 200~300μm.

[0045] The total thickness of anti-corrosion layer A8 and anti-corrosion layer B9 is 500~600μm.

[0046] This embodiment 4 provides a more preferred technical solution based on embodiment 3. Specifically, the outer surface of the precast concrete counterweight block 4 is coated with an anti-corrosion layer A8, with a thickness of 200-300 μm. An anti-corrosion layer B9 is then coated on the outer surface of anti-corrosion layer A8, with a thickness of 200-300 μm. The total thickness of anti-corrosion layers A8 and B9 is 500-600 μm. This two-layer anti-corrosion structure provides long-term protection for the counterweight block against groundwater corrosion, ensuring structural durability. Furthermore, the anti-corrosion layers are processed in a controlled factory environment, making quality easier to guarantee and the operation more convenient.

[0047] Example 5

[0048] like Figure 1-5 As shown, the present invention provides a steel manhole structure for underground pipes, including a steel manhole 1, a steel manhole cover 2, and a pipe interface 3. Its characteristic feature is that it also includes a precast concrete counterweight block 4 adapted to the assembly conditions of the steel manhole 1. A steel plate 5 is pre-embedded on the precast concrete counterweight block 4. The bottom of the steel manhole 1 is provided with a support lug 6 for welding to the steel plate 5. The steel manhole 1 is connected to the precast concrete counterweight block 4 through welding the support lug 6 to the steel plate 5.

[0049] This utility model also includes a pre-embedded steel ring 7 embedded in the precast concrete counterweight block 4, and four steel plates 5, which are evenly distributed around the pre-embedded steel ring 7. The number of lugs 6 is the same as that of the steel plates 5 and they correspond one-to-one.

[0050] Both the lug 6 and the steel plate 5 of this utility model are L-shaped, and their structures complement each other.

[0051] The precast concrete counterweight 4 is in the shape of a square column, rhombus column, elliptical column, or cylinder, with a height of 100~500mm, preferably 300mm.

[0052] The outer surface of the precast concrete counterweight 4 is coated with an anti-corrosion layer A8, which has a thickness of 200~300μm.

[0053] The outer surface of anti-corrosion layer A8 is coated with an anti-corrosion layer B9, which has a thickness of 200~300μm. The total thickness of anti-corrosion layers A8 and B9 is 500~600μm.

[0054] Both anti-corrosion layer A8 and anti-corrosion layer B9 are epoxy asphalt coatings.

[0055] This embodiment 6 presents a more preferred technical solution based on embodiment 5. Specifically, both anti-corrosion layers A8 and B9 are epoxy asphalt coatings. Using epoxy asphalt coatings to standardize anti-corrosion measures ensures stable and reliable protection throughout the entire lifespan of the A8 and B9 anti-corrosion layers. Epoxy asphalt combines the adhesion of epoxy resin with the impermeability of asphalt, forming a double barrier; the same material avoids electrochemical corrosion, ensuring overall consistency; high weather resistance withstands harsh environments, extending service life; and it is convenient to construct, cost-effective, and meets economic requirements.

[0056] Finally, it should be noted that the above embodiments are merely preferred embodiments used to illustrate the technical solution of this utility model, and are not intended to limit it, much less limit the patent scope of this utility model. Any modifications or refinements made to the main design concept and spirit of this utility model that are not of substantial significance, but which still solve the same technical problem as this utility model, should be included within the protection scope of this utility model; in addition, the direct or indirect application of the technical solution of this utility model to other related technical fields are similarly included within the patent protection scope of this utility model.

Claims

1. A steel manhole structure, comprising a steel manhole (1), a steel manhole cover (2), and a pipe interface (3), characterized in that, It also includes a precast concrete counterweight block (4) adapted to the assembly conditions of the steel well (1). A steel plate (5) is embedded in the precast concrete counterweight block (4). The bottom of the steel well (1) is provided with a support lug (6) for welding connection with the steel plate (5). The steel well (1) is connected to the precast concrete counterweight block (4) by welding the support lug (6) to the steel plate (5).

2. The underground steel well structure according to claim 1, characterized in that, It also includes a pre-embedded steel ring (7) embedded in the precast concrete counterweight block (4), and four steel plates (5). The four steel plates (5) are evenly distributed around the pre-embedded steel ring (7). The number of lugs (6) is the same as that of the steel plates (5) and they correspond one to one.

3. The underground steel well structure according to claim 1, characterized in that, The precast concrete counterweight (4) is in the shape of a square column, rhombus column, elliptical column or cylindrical column, with a height of 100~500mm.

4. The underground steel well structure according to claim 3, characterized in that, The height of the precast concrete counterweight (4) is 300mm.

5. A steel well structure for underground pipes according to claim 1, characterized in that, The outer surface of the precast concrete counterweight (4) is coated with a layer of anti-corrosion layer A (8), and the thickness of anti-corrosion layer A (8) is 200~300μm.

6. The underground steel well structure according to claim 5, characterized in that, The outer surface of the anti-corrosion layer A (8) is coated with an anti-corrosion layer B (9), and the thickness of the anti-corrosion layer B (9) is 200~300μm.

7. A steel well structure for underground pipes according to claim 6, characterized in that, The total thickness of anti-corrosion layer A (8) and anti-corrosion layer B (9) is 500~600μm.

8. A steel well structure for underground pipes according to claim 6, characterized in that, Both anti-corrosion layer A (8) and anti-corrosion layer B (9) are epoxy asphalt coatings.

Images