A hydrophobic pipe shaft with a hydrophobic compensation device

Abstract

A hydrophobic pipe shaft with a hydrophobic compensation device, characterized in that it comprises a pipe shaft and a pipe sub-shaft, wherein the pipe sub-shaft is arranged on the side of the pipe shaft, a certain distance exists between the pipe shaft and the pipe sub-shaft, the pipe shaft is equipped with a submerged steam piping network, the submerged steam piping network is equipped with a number of diverters and each of the diverters is equipped with a diverter door; the end of the hydrophobic pipe is installed in the sub-shaft, and a hydrophobic compensation device is installed on the hydrophobic pipe in the shaft, comprising a flanged ring and a metal hose with flanges at both ends of the metal hose;The center of the metal hose is a pressure-bearing metal hose, and the metal hose comprises a metal bellows and a metal wire mesh, wherein the metal bellows and the metal wire mesh have a predetermined expansion and contraction.

Description

Technical area

[0001] This utility model relates to the technical field of hydrophobic pipeline construction and in particular to a hydrophobic pipe shaft with a hydrophobic compensation device. Technology in the background

[0002] Existing steam transmission and distribution pipeline networks must be equipped with hydrophobic points and devices. For underground steam pipeline networks, hydrophobic points and hydrophobic wells must be installed to address the hydrophobic problem. Due to the significant thermal displacement of steam pipelines, a rigid support structure is typically required upstream of the hydrophobic point to protect the hydrophobic section and ensure the safety of the hydrophobic pipe. Otherwise, the large thermal displacement of the main pipeline will be transferred to the hydrophobic pipe. The existing hydrophobic pipe leading to the sub-wells must undergo sealing, thermal insulation, and other treatments to ensure the location of the more vulnerable hydrophobic pipe is secure and able to withstand the tangential forces of potential damage. Content of the utility model

[0003] In accordance with the aforementioned technical problems, a hydrophobic pipe shaft with a hydrophobic compensation device is provided. The technical means used in the utility model is as follows: A hydrophobic pipe shaft with a hydrophobic compensation device, comprising a pipe shaft and a pipe sub-shaft, wherein the pipe sub-shaft is provided at the side of the pipe shaft, a certain distance exists between the pipe shaft and the pipe sub-shaft, and an underground steam pipe network is installed in the pipe shaft. The underground steam pipe network is provided with a number of hydrophobic pipes, each of which is equipped with a drain door, the ends of the hydrophobic pipes are provided in the pipe sub-shaft, and a hydrophobic compensation device is provided on the hydrophobic pipes provided in the pipe shaft.The siphon compensation device comprises a flange ring and a metal hose, wherein both ends of the metal hose are flanged, the middle of the metal hose is a pressure-bearing metal hose, the metal hose consists of a metal bellows and a metal wire mesh, and the metal bellows and the metal wire mesh have a preset expansion and contraction property.

[0004] Furthermore, the flanges are the same or different, and the flanges provided at both ends of the metal hose include a flat welded flange connection at both ends, or a flat welded flange at one end and a loose flange connection at the other end, or a flanged loose flange connection at both ends.

[0005] Furthermore, the flanges at both ends of the metal hose are concave-convex high-pressure flanges, i.e., a convex flange at one end and a concave flange at the other end, or convex flanges at both ends.

[0006] Furthermore, the hydrophobic pipe connecting the pipe shaft and the pipe underpass is encased on the outside with a flexible waterproof sleeve, and a sealing structure is provided between the flexible waterproof sleeve and the pipe shaft and the pipe underpass.

[0007] Furthermore, a water collection pit is provided at the lower end of the pipeline shaft, and a drainage pump and a drainage pipe are buried in the water collection pit.

[0008] Furthermore, a shaft door is provided at the upper end of the pipe shaft and the pipe under-shaft.

[0009] The utility model has the following advantages: The utility model, through the adjustment of the hydrophobic compensation device, consists of a metal bellows and a metal wire mesh. The compression of the metal bellows can be adjusted to ensure that the hydrophobic pipeline leading to the secondary wells has a certain degree of expansion and contraction. This reduces the intermittent discharge of steam onto the hydrophobic pipeline caused by the thermal expansion and contraction of the steam network. The metal bellows has a certain degree of expansion and contraction simultaneously with the pipes used for transporting liquids. The metal wire mesh also has a certain degree of expansion and contraction and can protect the metal bellows from damage.The length of the metal hose can be adjusted as needed, and the flange ring and pipe diameter of the metal hose are divided into different models that comply with national standards to meet different requirements for connecting pipelines. Description of the attached drawings

[0010] To more clearly illustrate the technical solutions in the embodiments or prior art of the present utility model, the accompanying drawings used in the description of the embodiments or prior art are briefly described below. It is understood that the accompanying drawings in the following description represent some of the embodiments of the utility model, and that other accompanying drawings can be created by a person skilled in the art in accordance with these drawings without any creative effort. Fig. Figure 1 shows a top view of the utility model. Fig. Figure 2 is a schematic representation of the structure of the hydrophobic compensation device of the utility model, wherein (a) the flanges attached to both ends of the metal hose comprise a flat welded flange connection at both ends; (b) a flat welded flange at one end and a loose flange connection at the other end; (c) a loose flange connection with folded flanges at both ends; and (d) a flange with concave and convex surface high-pressure flanges is attached to both ends of the metal hose.

[0011] In the figures: 1, hydrophobic compensation device; 2, underground steam pipe network; 3, drain door; 4, flexible watertight housing; 5, shaft door; 6, water collection pit; 7, metal bellows; 8, metal wire mesh; 9, left flange; 10, right flange. Detailed description

[0012] To clarify the purpose, technical solutions, and advantages of the embodiments of the utility model, the technical solutions in these embodiments are described clearly and completely below in conjunction with the accompanying drawings. It is evident that the described embodiments represent a subset of the utility model's embodiments and not all of them. Starting with the embodiments of this utility model, all other embodiments that a person skilled in the art can produce without inventive work fall within the scope of protection of this utility model.

[0013] As in the Fig.Figures 1 to 2 show an embodiment of the utility model disclosing a hydrophobic pipe shaft with a hydrophobic compensation device, comprising a pipe shaft and a pipe under-shaft, wherein the pipe under-shaft is arranged at the side of the pipe shaft, the pipe shaft and the pipe under-shaft are arranged at a certain distance from each other, and the pipe shaft is equipped with an underground steam pipe network 2. The underground steam pipe network is provided with a number of diverter pipes, each of which is provided with a diverter door 3, the end of the hydrophobic pipe is provided in the pipe under-shaft, and a hydrophobic compensation device is provided on the hydrophobic pipes in the pipe under-shaft, wherein the hydrophobic compensation device 1 comprises a flange ring and a metal hose.The metal hose is provided at each end with a left flange 9 and a right flange 10. The metal hose is a pressure-bearing metal hose in the middle. The metal hose comprises a metal bellows 7 and a metal wire mesh 8. The metal bellows and the metal wire mesh both have preset expansion and contraction properties. In this embodiment, the steam pipe network is provided with a moisture-tight device on the outside through the wall.

[0014] The flanges are identical or different, featuring a hydrophobic compensation device at both ends of the flange ring (adaptable for convex, concave, or flat flanges as needed), a pressure-resistant metal hose, and a metal hose that can be adjusted according to requirements. The length of the flange ring and the diameter of the metal hose can be customized according to national standards. They are divided into various models to meet the requirements of different pipeline connections. Flanges attached to both ends of the metal hose include, in particular, a flat, welded flange connection at both ends, a flat, welded flange at one end and a loose flange connection at the other, or a loose flange connection with flanges at both ends.

[0015] Furthermore, the flanges at both ends of the metal hose are concave-convex high-pressure flanges, in particular a convex flange at one end and a concave flange at the other end, or convex flanges at both ends.

[0016] Furthermore, a flexible waterproof housing 4 aul en is attached to the hydrophobic pipeline connecting the pipeline shaft and the pipeline under-shaft, and a sealing structure is provided between the flexible waterproof housing and the pipeline shaft and the pipeline under-shaft.

[0017] Furthermore, a water collection pit 6 is provided at the lower end of the pipeline shaft, and a drainage pump and a drainage pipe have been pre-dug in the water collection pit.

[0018] Furthermore, a shaft door 5 is provided at the upper end of the pipe shaft and the pipe under-shaft.

[0019] As a specific implementation scenario, the existing steam transmission and distribution pipeline network requires the installation of hydrophobic points and hydrophobic equipment. For underground steam pipeline networks, these hydrophobic points must be installed as hydrophobic wells to address the hydrophobic issue. According to the specifications, steam pipeline wells must have sub-wells. Due to the significant thermal displacement of steam pipelines, it is generally necessary to install a fixed support upstream of the hydrophobic point to ensure the safety of the hydrophobic section and pipe. Otherwise, the large thermal displacement of the main pipeline will be transferred to the hydrophobic pipe, and the sub-well must be fixed to the hydrophobic pipe for sealing purposes. This seal is necessary to resist the tangential force and prevent damage to the hydrophobic pipe.In special circumstances that make it impossible to erect fixed pillars for the aforementioned pipe system, the problem of the hydrophobic point simultaneously following the thermal displacement of the main pipeline must be solved. If adjusting the position of the sub-well changes the pressure and direction, and adjustment of the sub-well is not possible, the solution lies directly in the hydrophobic pipe itself. The utility model of a hydrophobic compensation device for pressure-resistant metal flexible short pipe describes the use of this device as a component of hydrophobic steel pipe. This device replaces the metal flexible short pipe in areas with specific pressure and temperature requirements, ensuring that the flexibility resists lateral displacement and thus solving the problem of damage to the original steel pipe.

[0020] During the planning of a long-distance steam transmission and distribution network, an approximately 120 m long collector pipe is crossed. Due to the specific laying pattern of the collector pipe, it is not possible to install fixed supports and expansion joints inside the collector pipe, and the space at the end of the collector pipe is small, so only a drop shaft can be installed. The end of the jacking pipe is the lowest point of the pipe section, and considering that the drainage system is to be installed in this shaft, it is necessary to construct an additional drainage shaft according to the specifications. Due to the issue of land use, the secondary well can only be constructed on the side of the main well, and the pipe section cannot be installed upstream of the fixed point.To solve the problem of the water drain pipe after the relocation of the main line, a flexible short metal pipe is used, which is connected to the water drain pipe to solve the problem.

[0021] Finally, it should be noted that the foregoing embodiments serve only to illustrate the technical solutions of the utility model and do not limit them. Although the utility model has been described in detail with reference to the foregoing embodiments, the person skilled in the art should understand that it is nevertheless possible to modify the technical solutions recorded in the foregoing embodiments or to replace some or all of the technical features with equivalent ones; such modifications or replacements do not remove the essence of the corresponding technical solutions from the scope of application of the technical solutions of the embodiments of the utility model.

Claims

[1] A hydrophobic tube shaft with a hydrophobic compensation device, characterized bythat it comprises a casing shaft and a casing sub-shaft, the casing sub-shaft being arranged on the casing shaft side, a certain distance being maintained between the casing shaft and the casing sub-shaft, the casing shaft being equipped with an immersed steam piping network, the immersed steam piping network being equipped with a number of traps, and each of the traps being equipped with a trap door; the end of the hydrophobic pipe is installed in the sub-shaft casing shaft, and a hydrophobic compensation device is installed on the hydrophobic pipe in the casing shaft, which device comprises a flange ring and a metal hose with flanges at both ends of the metal hose; the middle of the metal hose is a pressure-bearing metal hose, and the metal hose comprises a metal bellows and a metal wire braid, the metal bellows and the metal wire braid having a predetermined expansion and contraction. [2] A hydrophobic tube shaft with a hydrophobic compensation device according to claim 1, characterized by that the flanges are the same or different and the flanges at both ends of the metal hose comprise two flat welded flanges connected on both sides or one end of the flat welded flange and the other end of the loose socket flange connection or two ends of the flanges connected on both sides of the flared loose socket flanges. [3] A hydrophobic tube shaft with a hydrophobic compensation device according to claim 1, characterized by that the flanges provided at both ends of the metal hose are concave-convex high pressure flanges, namely a convex flange at one end and a concave flange at the other end, or convex flanges at both ends. [4] A hydrophobic tube shaft with a hydrophobic compensation device according to claim 1, characterized bythat the hydrophobic pipe connecting the pipeline shaft and the pipeline sub-shaft is provided externally with a flexible waterproof sheath, and a sealing structure is provided between the flexible waterproof sheath and the pipeline shaft and the pipeline sub-shaft. [5] A hydrophobic tube shaft with a hydrophobic compensation device according to claim 1, characterized by that a water collection pit is provided at the lower end of the pipe shaft, and the water collection pit is pre-dug with a drainage pump and a drainage pipe. [6] A hydrophobic tube shaft with a hydrophobic compensation device according to claim 1, characterized by that a shaft door is provided at the upper end of the pipe shaft and the pipe sub-shaft.

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