A corrugated expansion joint for laying pipelines in saline-alkali land

Abstract

The present invention discloses a corrugated expansion joint for laying pipelines in saline-alkali land, which belongs to the field of corrugated expansion joints. The present invention provides a corrugated expansion joint for laying pipelines in saline-alkali land. The present invention provides multi-layer protection for the corrugated expansion joint, which greatly increases the service life of the corrugated expansion joint. First, the corrugated rubber sleeve located on the outside serves as the first layer of protection for the corrugated expansion joint, which directly resists the erosion of external salt and alkali, and the reinforcing fiber and capillary fiber laid in the corrugated rubber sleeve can effectively reduce the rupture caused by the elastic deformation of the smaller corrugated rubber sleeve itself. Secondly, the filling ball filled in the filling cavity is the second layer of protection for the corrugated expansion joint. When the outer corrugated rubber sleeve cracks or breaks, the filling ball is exposed. At this time, the closed air chamber formed by multiple filling fibers can alleviate the erosion of saline and alkali substances to a limited extent, thereby extending the service life of the corrugated expansion joint. Finally, the corrugated rubber sleeve located on the inside becomes the last barrier of the corrugated expansion joint.

Description

Technical Field

[0001] The invention relates to the field of corrugated expansion joints, and more particularly to a corrugated expansion joint used for laying pipelines in saline-alkali lands. Background Art

[0002] The bellows expansion joint can play a telescopic role mainly by the bellows to achieve, the function and strength design of the bellows is mainly the design of the bellows, the different designs and combinations of the bellows can make the bellows stretch, compress or bend, thus forming the three basic forms of bellows expansion joints: axial, transverse and angular.

[0003] Bellows compensators are flexible components with bellows as their core, providing axial, lateral, and angular compensation on pipelines. Axial compensators are designed to reduce self-excitation in the medium. The lack of an inner casing significantly limits radial compensation capabilities, and they are generally used only to absorb or compensate for axial displacement in pipelines. Lateral displacement compensators primarily absorb lateral displacement perpendicular to the compensator axis. Small tie rod lateral displacement compensators are suitable for absorbing lateral displacement, and can also absorb axial, angular, and any combination of displacement in three directions: hinge compensators. These compensators are used in pairs of two or three to absorb lateral deformation within a single plane. Universal hinge compensators, used in pairs of two or three, can absorb deformation in three dimensions.

[0004] Saline-alkali land is a type of salt accumulation, which means that the salt contained in the soil affects the normal growth of crops. The formation of alkaline soil and alkaline soil is mostly related to the accumulation of carbonates in the soil. Therefore, the alkalinity is generally high. Plants can hardly survive in severe saline-alkali soil areas. The existing means of saline-alkali land management with better effects mainly include chemical methods of neutralizing with chemical agents, physical methods of using the transpiration of liquid water after large-scale irrigation to transport mineral salts to the soil surface and then uniformly treat them, or biological methods using salt-alkali tolerant plants. All of the above three methods require huge financial and human resources, and corresponding supporting facilities need to be built for the management of soil salinization. Traditional corrugated expansion joints have poor corrosion resistance and cannot adapt to high corrosion areas in saline-alkali land. Summary of the Invention

[0005] 1. Technical problems to be solved

[0006] In response to the problems existing in the prior art, the purpose of the present invention is to provide a corrugated expansion joint for laying pipelines in saline-alkali land, which can effectively extend the service life of the corrugated expansion joint in saline-alkali land, significantly reduce the investment cost of infrastructure construction related to saline-alkali land management, and increase the efficiency of saline-alkali land management.

[0007] 2. Technical solution

[0008] To solve the above problems, the present invention adopts the following technical solutions.

[0009] A corrugated expansion joint for laying pipelines in saline-alkali land comprises a corrugated rubber hose, both ends of the corrugated rubber hose are fixedly connected to connecting terminals, the corrugated rubber hose comprises a corrugated rubber sleeve, a filling cavity is excavated in the corrugated rubber sleeve, the filling cavity is filled with a plurality of filling balls, the filling balls comprise a filling ball sleeve, a plurality of skeleton fibers are fixedly connected in the filling ball sleeve, the plurality of skeleton fibers are staggered and distributed in a mesh structure in the filling ball sleeve, a plurality of filling fibers are fixedly connected to the outer wall of the skeleton fiber, the plurality of filling fibers are staggered and entangled with each other to form a plurality of closed air chambers, and a plurality of entangled fibers are fixedly connected to the outside of the filling ball sleeve, which can effectively extend the service life of the corrugated expansion joint in saline-alkali land, greatly reduce the investment cost of infrastructure construction related to saline-alkali land management, eliminate the need for high-frequency repair and replacement of the corrugated expansion joint, and is less likely to affect the normal saline-alkali land management work, thereby increasing the efficiency of saline-alkali land management.

[0010] Furthermore, the corrugated rubber sleeve includes a rubber layer, and the rubber layer is made of alkali-resistant and wear-resistant rubber to slow down the corrosion rate of the corrugated rubber sleeve in saline-alkali land.

[0011] Furthermore, a plurality of reinforcing fibers are embedded in the rubber layer, and the reinforcing fibers are parallel to each other and axially aligned with the corrugated hose. The reinforcing fibers can significantly increase the strength of the rubber layer, making it less likely for the rubber layer to break when performing reciprocating elastic motion along the axial direction of the corrugated hose.

[0012] Furthermore, the outer end of the reinforcing fiber is fixedly connected to a plurality of capillary fibers, and the plurality of capillary fibers are arranged in an interlaced manner. The capillary fibers can increase the toughness of the rubber layer, making it less likely for the rubber layer surface to crack and fall off due to multiple elastic deformations, thereby further increasing the service life of the rubber layer.

[0013] Furthermore, the inner wall of the corrugated rubber sleeve is fixedly connected to a leak-proof net, and the leak-proof net is sleeved on the outside of multiple filling balls. The leak-proof net is used to net the filling balls. When cracks and damage occur on the surface of the corrugated rubber sleeve, it does not necessarily cause the filling balls to leak out, and it is not easy to affect the corrosion resistance of the corrugated expansion joint.

[0014] Furthermore, the anti-leakage net is woven from multiple corrosion-resistant fibers, which include elastic hoses, and the corrosion-resistant fibers are twisted together by three elastic hoses, which greatly increases the toughness of the corrosion-resistant fibers and makes the anti-leakage net less likely to break.

[0015] Furthermore, an elastic cavity is bored in the elastic hose, and the elastic cavity is filled with high-pressure nitrogen. The elastic cavity can increase the elasticity of the elastic hose and increase the overall impact resistance of the anti-leakage net. The high-pressure gas filled in the elastic cavity can easily maintain the overall strength of the elastic hose and is not easy to affect the toughness of the anti-leakage net.

[0016] Furthermore, an elastic cavity is bored in the elastic hose, and the elastic cavity is filled with high-pressure nitrogen. The elastic cavity can increase the elasticity of the elastic hose and increase the overall impact resistance of the anti-leakage net. The high-pressure gas filled in the elastic cavity can easily maintain the overall strength of the elastic hose and is not easy to affect the toughness of the anti-leakage net.

[0017] Furthermore, the filling ball sleeve is filled with air, so that the internal air pressure of the filling ball sleeve is slightly higher than the normal atmospheric pressure, which facilitates the overall shaping of the filling ball and makes the filling ball less likely to be crushed under external force, thereby not easily affecting the anti-corrosion effect of the filling ball.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] This solution provides multi-layer protection for the bellows expansion joint, which greatly increases the service life of the bellows expansion joint. First, the corrugated rubber sleeve located on the outside serves as the first layer of protection for the bellows expansion joint, directly resisting the erosion of external salt and alkali, while the reinforced fiber and capillary fiber laid in the corrugated rubber sleeve can effectively reduce the rupture caused by the elastic deformation of the corrugated rubber sleeve itself. Secondly, the filling ball filled in the filling cavity is the second layer of protection for the bellows expansion joint. When the outer corrugated rubber sleeve cracks or breaks, the filling ball is exposed. Due to the effect of entangled fibers, the impact of the fluid transported in the corrugated hose over the years is immediately Under the action of vibration, the filling balls are not easy to move relative to each other and are easy to be evenly patched in the filling cavity. At this time, the closed air chamber formed by multiple filling fibers can alleviate the erosion of saline-alkali substances to a limited extent and extend the service life of the corrugated expansion joint. Finally, the corrugated rubber sleeve located on the inside becomes the last barrier of the corrugated expansion joint, which can effectively extend the service life of the corrugated expansion joint in saline-alkali land, greatly reduce the investment cost of infrastructure construction related to saline-alkali land treatment, and do not need to repair and replace the corrugated expansion joint frequently, which is not easy to affect the normal saline-alkali land treatment work and increase the efficiency of saline-alkali land treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a front cross-sectional view of the present invention;

[0023] Figure 3 for Figure 2Schematic diagram of the structure at A in the middle;

[0024] Figure 4 It is a structural schematic diagram of the filling ball of the present invention;

[0025] Figure 5 A partial cross-sectional view of the corrugated rubber sleeve of the present invention;

[0026] Figure 6 It is a partial cross-sectional schematic diagram of the anti-leakage net of the present invention.

[0027] Description of the numbers in the figure:

[0028] 1. Corrugated hose, 2. Connecting terminal, 3. Corrugated rubber sleeve, 301 rubber layer, 302 reinforced fiber, 303 capillary fiber, 4. Filling ball, 401 filling ball sleeve, 402 skeleton fiber, 403 filling fiber, 404 entangled fiber, 5. Anti-leakage net, 501 elastic hose, 502 elastic cavity, 503 hard burr. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work shall fall within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention in specific circumstances.

[0032] Example 1:

[0033] See also Figure 1-4A corrugated expansion joint for laying pipelines in saline-alkali lands, comprising a corrugated hose 1, both ends of the corrugated hose 1 are fixedly connected with connecting terminals 2, the corrugated hose 1 is connected to other pipelines through the connecting terminals 2 at both ends, the connecting terminals 2 include a corrugated rubber sleeve 3, a filling cavity is excavated in the corrugated rubber sleeve 3, the filling cavity is filled with a plurality of filling balls 4, the filling balls 4 include a filling ball sleeve 401, a plurality of skeleton fibers 402 are fixedly connected in the filling ball sleeve 401, the plurality of skeleton fibers 402 are staggered and distributed in a mesh structure in the filling ball sleeve 401, and the outer wall of the skeleton fibers 402 is fixedly connected to the outer wall of the skeleton fibers 402. It is connected with multiple filling fibers 403, and the multiple filling fibers 403 are intertwined and entangled with each other to form multiple closed air chambers. The outside of the filling ball sleeve 401 is fixedly connected with multiple entangled fibers 404. Adjacent filling balls 4 are relatively positioned with each other through the interweaving and entanglement of the entangled fibers 404, which can effectively extend the service life of the corrugated expansion joint in saline-alkali land, greatly reduce the investment cost of the infrastructure construction related to saline-alkali land management, and do not need to repair and replace the corrugated expansion joint frequently, which is not easy to affect the normal saline-alkali land management work and increase the efficiency of saline-alkali land management.

[0034] In particular, the filling ball 4 is the main structure for preventing salt-alkali erosion in this solution, wherein the skeleton fiber 402 is the skeleton of the entire filling ball 4, which makes the filling ball 4 not easy to deform as a whole and easy to fill the filling cavity, and the closed air chamber formed by the filling fibers 403 interwoven with each other can effectively reduce the erosion rate of salt-alkali substances and avoid the rapid diffusion of salt-alkali substances. At the same time, through the mutual entanglement of the entangled fibers 404 of adjacent filling balls 4 or the entanglement between the entangled fibers 404 and the hard burrs 503, the position of the filling ball 4 is relatively fixed, and it is not easy for the filling ball 4 to shift sideways and accumulate over a large area, which is not easy to affect the protective effect of the filling ball 4.

[0035] See also Figure 1 and Figure 5 The corrugated rubber sleeve 3 includes a rubber layer 301. The rubber layer 301 is made of alkali-resistant and wear-resistant rubber to slow down the corrosion rate of the corrugated rubber sleeve 3 in saline-alkali land. A plurality of reinforcing fibers 302 are embedded in the rubber layer 301. The reinforcing fibers 302 are parallel to each other and are axially oriented with the corrugated rubber hose 1. The reinforcing fibers 302 can greatly increase the strength of the rubber layer 301, so that the rubber layer 301 is not easily broken when performing reciprocating elastic motion along the axial direction of the corrugated rubber hose 1. The outer end of the reinforcing fiber 302 is fixedly connected to a plurality of capillary fibers 303. The plurality of capillary fibers 303 are staggered with each other. The capillary fibers 303 can increase the toughness of the rubber layer 301, so that the rubber layer 301 is not easily cracked or fallen off due to multiple elastic deformations, thereby further increasing the service life of the rubber layer 301.

[0036] See also Figure 3 and Figure 6The inner wall of the corrugated rubber sleeve 3 is fixedly connected with a leak-proof net 5, and the leak-proof net 5 is sleeved on the outside of multiple filling balls 4. The leak-proof net 5 is used to net the filling balls 4. When cracks and damage occur on the surface of the corrugated rubber sleeve 3, it does not necessarily cause the filling balls 4 to leak out, and it is not easy to affect the corrosion resistance of the corrugated expansion joint. The leak-proof net 5 is woven from multiple corrosion-resistant fibers. The corrosion-resistant fibers include an elastic hose 501, and the corrosion-resistant fibers are twisted together by three elastic hoses 501, which greatly increases the toughness of the corrosion-resistant fibers and makes the leak-proof net 5 not easy to break. An elastic cavity 502 is excavated in the elastic hose 501, and the elastic cavity 502 is filled with high-pressure nitrogen. The elastic cavity 502 can increase the elastic hose 50 1, increases the overall impact resistance of the anti-leakage net 5, and the high-pressure gas filled in the elastic cavity 502 is easy to maintain the overall strength of the elastic hose 501, and is not easy to affect the toughness of the anti-leakage net 5. A plurality of hard burrs 503 are fixedly connected to the surface of the elastic hose 501, and the plurality of hard burrs 503 are staggered. The hard burrs 503 are intertwined and entangled with the entangled fibers 404 of the adjacent filling balls 4. The intertwined and entangled hard burrs 503 and the entangled fibers 404 have a limiting effect, which makes it difficult for the filling balls 4 to undergo large displacement in the filling cavity and is not easy to affect the normal anti-corrosion effect of the filling balls 4.

[0037] The filling ball sleeve 401 is filled with air, so that the internal air pressure of the filling ball sleeve 401 is slightly higher than the normal atmospheric pressure, which facilitates the overall shaping of the filling ball 4 and makes the filling ball 4 less likely to be crushed under external force, thereby less likely to affect the anti-corrosion effect of the filling ball 4.

[0038] This solution provides multi-layer protection for the bellows expansion joint, which greatly increases the service life of the bellows expansion joint. First, the corrugated rubber sleeve 3 located on the outside serves as the first layer of protection for the bellows expansion joint, directly resisting the erosion of external salt and alkali, and the reinforcing fibers 302 and capillary fibers 303 laid in the corrugated rubber sleeve 3 can effectively reduce the rupture caused by the elastic deformation of the corrugated rubber sleeve 3 itself. Secondly, the filling ball 4 filled in the filling cavity is the second layer of protection for the bellows expansion joint. When the outer corrugated rubber sleeve 3 cracks or breaks, the filling ball 4 is exposed. Due to the effect of the entangled fibers 404, the fluid is transported in the corrugated rubber hose 1 for many years. Under the vibration caused by the impact, the filling ball 4 is not easy to move relative to each other, and it is easy to sew evenly in the filling cavity. At this time, the closed air chamber formed by multiple filling fibers 403 can alleviate the erosion of saline-alkali substances to a limited extent, and extend the service life of the corrugated expansion joint. Finally, the corrugated rubber sleeve 3 located on the inside becomes the last barrier of the corrugated expansion joint, which can effectively extend the service life of the corrugated expansion joint in saline-alkali land, greatly reduce the investment cost of infrastructure construction related to saline-alkali land management, and do not need to repair and replace the corrugated expansion joint frequently, which is not easy to affect the normal saline-alkali land management work and increase the efficiency of saline-alkali land management.

[0039] The above description is only a preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto; any technician familiar with the technical field within the technical scope disclosed by the present invention; any equivalent replacement or change based on the technical solution and improved conception of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A corrugated expansion joint for laying pipelines in saline-alkali land, comprising a corrugated hose (1), both ends of the corrugated hose (1) being fixedly connected to connecting terminals (2), characterized in that: The corrugated rubber hose (1) includes a corrugated rubber sleeve (3), a filling cavity is bored in the corrugated rubber sleeve (3), and a plurality of filling balls (4) are filled in the filling cavity. The filling balls (4) include a filling ball sleeve (401), a plurality of skeleton fibers (402) are fixedly connected in the filling ball sleeve (401), and the plurality of skeleton fibers (402) are staggered and distributed in the filling ball sleeve (401) to form a mesh structure. A plurality of filling fibers (403) are fixedly connected to the outer wall of the skeleton fiber (402), and the plurality of filling fibers (403) are staggered and entangled with each other to form a plurality of closed air chambers. The outside of the filling ball sleeve (401) is fixedly connected with a plurality of entangled fibers (404); the corrugated rubber sleeve (3) includes a rubber layer (301), and the rubber layer (301) is made of alkali-resistant wear-resistant rubber; the rubber layer (301) A plurality of reinforcing fibers (302) are embedded in the corrugated rubber sleeve (1), and the reinforcing fibers (302) are parallel to each other, and the reinforcing fibers (302) are axially in the same direction as the corrugated rubber sleeve (1); the outer ends of the reinforcing fibers (302) are fixedly connected to a plurality of capillary fibers (303), and the plurality of capillary fibers (303) are staggered with each other; the inner wall of the corrugated rubber sleeve (3) is fixedly connected to an anti-leakage net (5), and the anti-leakage net (5) is sleeved on the outside of a plurality of filling balls (4); the anti-leakage net (5) is woven from a plurality of corrosion-resistant fibers, and the corrosion-resistant fibers include an elastic rubber sleeve (501), and the corrosion-resistant fibers are twisted by three elastic rubber sleeves (501); the surface of the elastic rubber sleeve (501) is fixedly connected to a plurality of hard burrs (503), and the plurality of hard burrs (503) are staggered, and the hard burrs (503) are aligned with adjacent filling balls (4). The entangled fibers (404) are intertwined and entangled together; an elastic cavity (502) is bored in the elastic hose (501), and the elastic cavity (502) is filled with high-pressure nitrogen; the filling ball sleeve (401) is filled with air, so that the internal pressure of the filling ball sleeve (401) is slightly higher than the normal atmospheric pressure.

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