Insulating short pipe

Abstract

The utility model relates to an insulating short pipe, and belongs to the technical field of pressure pipeline elements. The device is mainly used for the working condition that two ends of a pipeline need electric insulation isolation when a conductive medium is conveyed in cathode protection. The insulating short pipe comprises a base body, a connecting assembly, a hook ring and an insulating sealing assembly, wherein the base body is provided with a cavity, and the conveying medium electrolyte penetrates through the cavity and passes through the interior of the base body; an insulating structure is arranged on the inner side wall of the base body and is used for isolating a conveying medium from being in contact with the base body, so that an insulating effect is achieved; the connecting assembly is provided with a cavity; when the connecting assembly is connected with the base body, the cavity in the connecting assembly communicates with the cavity in the base body, so that the conveying medium sequentially penetrates through the cavities. The insulation sealing assembly is arranged between the base body and the connecting assembly. The base body is insulated from the connecting assembly; the base body is connected with the connecting assembly through the insulation sealing assembly and the external hook ring, so that the product forms an integral structure, and the influence of the external environment and the installation process on the performance of the product is further eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure pipeline components, in particular to an insulating short pipe. Background Art

[0002] Insulated spools are widely used as cathodic protection components in long-distance pipelines. During operation, they withstand not only high internal pressure but also various external forces and environmental fluctuations. These forces and environmental influences can impact product reliability, which primarily encompasses strength, sealing, and insulation performance. Loss of any of these properties can compromise the safe operation of long-distance pipelines and potentially lead to catastrophic consequences. Therefore, structural safety, reliable sealing, and excellent insulation performance are crucial. Currently, these features are achieved by installing insulating structures or insulating flanges between pipelines.

[0003] However, in the prior art, the insulating short tube and the connectors at both ends are mostly connected by bolts and nuts. During the assembly process, the connectors are easily deformed due to load reasons or when subjected to longitudinal loads, resulting in leakage at the connection. In addition, this connection method is greatly affected by the environment, resulting in insulation performance failure and low work efficiency. Utility Model Content

[0004] The utility model provides an insulating short tube, which has good sealing and insulating performance, can reduce the probability of parts being deformed due to load reasons or when bearing longitudinal loads; is less affected by external environmental factors, and has high working efficiency.

[0005] The insulating short tube provided in the present application includes: a base, a connecting assembly and an insulating sealing assembly; wherein, the base is provided with a cavity, and the conveying medium passes through the cavity from the base; the inner side wall of the base is provided with an insulating structure, and the conveying medium is insulated from the base through the insulating structure; the connecting assembly is provided with a cavity; when the connecting assembly is connected to the base, the cavity on the connecting assembly is connected to the cavity on the base, so that the conveying medium passes through the cavity in sequence; the insulating sealing assembly is arranged at a position between the base and the connecting assembly; the base is connected to the connecting assembly through the insulating sealing assembly to insulate the base from the connecting assembly.

[0006] The insulating short tube provided in the present application is provided with a base, and the conductive medium is transported through the provided base, and the electrical insulation isolation between the upstream and downstream pipelines is achieved through the base; since a connecting component is provided, the connecting component is connected to the base, and the connecting component is also used to transport the conductive medium, and the connecting component can provide an installation environment to facilitate the connection between the base and the insulating sealing component; since an insulating sealing component is provided, the insulating sealing component can achieve insulation and sealing effects, and can reduce the probability of insulation performance failure due to load reasons or external environmental influences, thereby ensuring the reliability of product strength, sealing and insulation performance.

[0007] In one possible implementation of the present application, an insulating part is provided on the inner side wall of the base, and the insulating part is in contact with the inner side wall of the base. Along the length direction of the base, one end of the insulating part is in contact with one end face of the base, and the other end of the insulating part is in contact with the other end face of the base.

[0008] In one possible implementation of the present application, the base includes a main body and an extension piece, and both the main body and the extension piece are provided with a cavity; along the length direction of the base, the main body and the extension piece are connected; along the circumferential direction of the extension piece, an annular boss is formed on the outer wall of the extension piece in a direction away from the center of the extension piece; along the length direction of the base, the end face of the insulating piece is in contact with the end face of the boss.

[0009] In one possible implementation of the present application, the connecting assembly includes a first connecting member and a second connecting member, and the first connecting member and the second connecting member are both provided with a cavity; the first connecting member is connected to the second connecting member; along the circumferential direction of the first connecting member, a protrusion is formed on the outer wall of the first connecting member in a direction away from the center of the first connecting member; the protrusion is adapted to the annular boss; and the extension member is arranged at a position between the main body and the first connecting member.

[0010] In one possible implementation of the present application, the insulating sealing assembly includes a first insulating ring, which is arranged between the first connecting member and the extension member; the first insulating ring is provided with a cavity, one end face of the first insulating ring is connected to the first connecting member, and the other end face is connected to the extension member; when the first connecting member and the extension member are both connected to the first insulating ring, the second connecting member, the first connecting member, the first insulating ring, the extension member, and the cavity on the main body are connected in sequence.

[0011] In one possible implementation of the present application, an elastic member is provided on the circumferential side of the first insulating ring; when the first connecting member is subjected to a force, the elastic member can be deformed.

[0012] In one possible implementation of the present application, the insulating sealing assembly also includes a second insulating filling, a second insulating ring and a sealing adhesive; the second insulating filling and the second insulating ring are arranged on the peripheral side of the first connecting member, and the second insulating filling is adhered to the second insulating ring; the sealing adhesive is installed on the protrusion, and the sealing adhesive is adhered to the second insulating ring; the second insulating filling, the second insulating ring and the sealing adhesive constitute an insulating space.

[0013] In one possible implementation of the present application, a hook ring is provided between the connecting assembly and the outer side of the base, and the hook ring is provided with a receiving cavity. The insulating sealing assembly, the extension piece, and the first connecting piece are all placed in the receiving cavity and connected into an integral structure through the hook ring.

[0014] In one possible implementation of the present application, a first insulating filling is provided on the circumferential side of the first connecting member, the first insulating filling is in contact with the second insulating ring, and the first insulating filling is in contact with the hook ring; when the first connecting member and / or the hook ring is subjected to an action force, the elastic member, the extension member, and the first connecting member are deformed to a certain extent to offset the external action force, thereby maintaining the insulating structure between the hook ring and the first connecting member in its initial state.

[0015] In one possible implementation of the present application, an anti-interference device is provided on the periphery of the second connecting member, one end of the anti-interference device is connected to the second connecting member, and the other end is connected to the hook ring.

[0016] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0017] (1) By configuring the substrate to have a main body and an extension structure, the present application can increase the length of the insulating short tube, increase the resistance of the transport medium between the two insulating sections, thereby reducing the current and further slowing down the rate of pipeline corrosion.

[0018] (2) The present application provides a first insulating ring, an elastic member, a hook, a sealing adhesive, a second insulating filling, a second insulating ring and a first insulating filling; on the basis of achieving sealing and insulating effects, since the elastic member and the like have the ability to undergo elastic deformation when subjected to an applied force, the probability of insulation failure due to load reasons or external environmental influences can be reduced, thereby improving the insulation reliability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the overall structure of an insulating short tube of the utility model;

[0021] Figure 2 is a schematic diagram of the matrix structure;

[0022] Figure 3 Schematic diagram of the connection component structure;

[0023] Figure 4 It is a schematic diagram of the structure of the insulation sealing component;

[0024] Figure 5 for Figure 1 A magnified view of the structure at center

[0025] Icon: 1-base; 11-main body; 12-extension piece; 2-connection assembly; 21-first connection piece; 22-second connection piece; 3-insulation sealing assembly; 31-first insulation ring; 32-elastic piece; 33-hook; 34-sealing adhesive; 35-second insulation filling; 36-second insulation ring; 37-first insulation filling; 4-insulation piece; 5-anti-interference device. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0027] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this utility model are for illustrative purposes only and do not represent the only implementation method.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0029] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] Unless otherwise defined, all technical and scientific terms used in the specification of this utility model have the same meanings as those commonly understood by those skilled in the art to which this utility model belongs. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The term "and / or" used in the specification of this utility model includes any and all combinations of one or more of the relevant listed items.

[0031] Existing technologies are mostly designed for the operation of surface pipelines transporting conductive media, in order to achieve electrical insulation and isolation of one side of the pipeline during pipeline transportation. For example, a center flange assembly is constructed by welding flanges on both sides of a short intermediate pipe, providing an insulating lining at the locations where the flanges and the inner walls of the short pipe come into contact with the conductive medium, and providing end flange assemblies (including end flanges connected to the center flange and sleeves welded on the other side of the end flanges) at both ends of the center flange assembly. The center flange assembly and the end flanges are connected by bolt assemblies; an insulating ring and an O-ring seal are also provided between the center flange assembly and the end flange assembly to achieve electrical insulation and isolation between the upstream and downstream pipelines.

[0032] However, there are still some shortcomings in the existing technology. For example: First, during on-site installation and use, manual installation and disassembly lead to insufficient or uneven bolt assembly load on both sides of the flange, resulting in insufficient or uneven static load on the O-ring and causing leakage at the flange connection; Second, for pipelines that are required to be buried on site, the flange connection structure cannot achieve buried working conditions and is easily affected by the surrounding environment, resulting in failure of insulation performance; Third, when the pipeline is subjected to local longitudinal load, it is easy to cause the two flange surfaces to tilt or misalign, and the limited compression amount of the O-ring is not enough to compensate for bending deformation or loss of elasticity, thereby causing leakage.

[0033] In view of the above situation, this solution cannot meet the requirements of conveying conductive media due to the axial length of the internal insulation structure of the original single insulating joint being limited by the product structure, and the working conditions of isolating the pipelines on both sides with the limited thickness of the insulating plate material inside the insulating joint; the resistance of the length of the pipeline insulation part is not enough to eliminate the current carried by the medium, which leads to the failure of electrical insulation between the upstream protected end and the downstream unprotected end on both sides of the pipeline, thereby making the pipeline conductive and the cathodic protection ineffective. Therefore, this application extends the distance between the protected side and the unprotected side of the pipeline by adding an insulating pipe section between the short pipes on both sides, increases the resistance of the medium between the two insulating sections, reduces the current, and delays pipeline corrosion; the design of this double insulation structure makes the product less affected by external environmental factors and reduces the probability of insulation failure.

[0034] The present application embodiment provides an insulating short tube, referring to Figure 1 , Figure 1 A cross-sectional view shows the overall structure of the insulating pipe. The insulating short pipe comprises a base 1, a connecting assembly 2, a hook ring 33, and an insulating sealing assembly 3. Base 1 is provided with a cavity through which the conveying medium passes. The inner wall of base 1 is provided with an insulating structure, which insulates the conveying medium from base 1. The connecting assembly 2 is provided with a cavity. When the connecting assembly 2 is connected to base 1, the cavity on the connecting assembly 2 communicates with the cavity on base 1, allowing the conveying medium to pass through the cavity in turn. The insulating sealing assembly 3 is positioned between base 1 and connecting assembly 2 to insulate the base 1 from the connecting assembly 2. The base 1 is connected to the connecting assembly 2 via the insulating sealing assembly 3 and the external hook ring 33, forming a monolithic structure to further eliminate the impact of the external environment and the installation process on its performance.

[0035] In the embodiment of the present application, the substrate 1 may be provided with a cavity, through which the conveying medium can pass, thereby passing through the substrate 1. An insulating structure is provided within the cavity, i.e., on the inner sidewall of the substrate 1. When the conveying medium passes through the substrate 1, the insulating structure isolates the conveying medium from the substrate 1, thereby isolating the substrate 1 from the conveying medium.

[0036] For example, the substrate 1 may be a hollow pipe or other component with a transmission channel, and the transport medium may be a conductive transport medium that can pass through the hollow pipe.

[0037] As another example, the substrate 1 can be composed of different parts, that is, the substrate 1 can include multiple parts. This arrangement can increase the length of the substrate 1, thereby eliminating the charge carried by the transport medium as it passes through the substrate 1. Compared to increasing the length of the substrate 1 through integral molding, this method facilitates assembly and transportation of the substrate 1.

[0038] In an embodiment of the present application, the connecting component 2 may also be provided with a cavity; the connecting component 2 may be connected to the substrate 1. After the connecting component 2 and the substrate 1 are connected, the cavity on the connecting component 2 may be connected to the cavity on the substrate 1, so that the conveying medium can pass through the cavity on the connecting component 2 and the cavity on the substrate 1 in sequence.

[0039] For example, the connecting component 2 can also be a hollow pipe or other component with a transmission channel. The inner diameter and outer diameter of the connecting component 2 can be the same as those of the base 1 to facilitate subsequent assembly. For example, if the transmission medium is a conductive medium, the conductive medium can pass through the connecting component 2.

[0040] As another example, the connection component 2 can be an integrally formed setting; it can also be a split setting, which can be understood as being formed by connecting different parts through corresponding connection methods, for example, by welding two pipes.

[0041] In the embodiment of the present application, the insulating sealing component 3 can be provided between the base 1 and the connecting component 2. The insulating sealing component 3 connects the base 1 and the connecting component 2 and simultaneously enables the base 1 and the connecting component 2 to be in a sealed and insulated state.

[0042] For example, taking the base 1 and the connecting component 2 as pipes, the insulating sealing component 3 has a pipe or pipe-like structure to facilitate connecting the base 1 and the connecting component 2 without affecting the transmission medium passing through the connecting component 2 and the base 1.

[0043] In another example, the insulating sealing component 3 has a filling structure, an insulating structure or other structures that can have a sealing effect and an insulating effect, etc. Through this structure, the base 1 and the connecting component 2 can be in an insulating state.

[0044] It can be understood that this application only describes one connecting component 2 and one insulating sealing component 3. In actual use, the connecting component 2 and the insulating sealing component 3 can be respectively set at both ends of the base 1 to form an insulating short tube.

[0045] In the above embodiment, since a base 1 is provided, a conductive medium is transported through the provided base 1, and electrical insulation isolation between upstream and downstream pipelines is achieved through the base 1; since a connecting component 2 is provided, the provided connecting component 2 is connected to the base 1, the connecting component 2 is also used to transport the conductive medium, and the connecting component 2 can provide an installation environment to facilitate the connection between the base 1 and the insulating sealing component 3; since an insulating sealing component 3 is provided, the insulating sealing component 3 can achieve insulation effect and sealing effect, and can reduce the probability of insulation performance failure due to load reasons or external environmental influences, thereby improving work efficiency.

[0046] In some embodiments of the present application, reference Figure 2 , Figure 2 A cross-sectional view of the structure of the substrate 1 is shown. An insulating member 4 is provided on the inner sidewall of the substrate 1. The insulating member 4 is bonded to the inner sidewall of the substrate 1. Along the length direction of the substrate 1, one end of the insulating member 4 is bonded to one end face of the substrate 1, and the other end of the insulating member 4 is bonded to the other end face of the substrate 1.

[0047] In an embodiment of the present application, an insulating member 4 can be provided on the inner surface of the substrate 1, and the insulating member 4 can be attached to the inner side wall of the substrate 1, and one end surface of the insulating member 4 can be attached to one end surface of the substrate 1, and the other end surface of the insulating member 4 can be attached to the other end surface of the substrate 1.

[0048] For example, the insulating member 4 can be a monolithic insulating lining with high insulation and strong adhesion to reduce the probability of the insulating member 4 falling off during the medium transportation process. The insulating lining can be a high molecular polymer with high temperature resistance, good electrical insulation, and strong adhesion to the pipe wall, such as polyethylene.

[0049] As another example, taking the insulating part 4 as an insulating lining, the end face of the insulating part 4 may not completely cover the end face of the substrate 1. The position on the end face of the substrate 1 not covered by the insulating part 4 can be coated with a polymer insulating varnish. The area covered by the insulating varnish can be connected to the insulating lining to form a complete insulating isolation channel, thereby reducing the probability of insulation failure due to the lack of connectivity of the insulating surface.

[0050] As another example, the insulating lining can be replaced by applying epoxy polymer paint with high insulation and a certain degree of adhesion to the inner sidewall and end surface of the substrate 1. It should be noted that when using epoxy polymer paint to replace the insulating lining, it is necessary to comprehensively consider the service life of the paint and the application scenario.

[0051] The temperature that the insulating member 4 can withstand can be between 85° and 100°, and the thickness of the insulating member 4 can be approximately 2 mm. In the embodiments of the present application, there are no specific restrictions on the temperature that the insulating member 4 can withstand, nor on the thickness of the insulating member 4. In other words, there are no specific restrictions on the type of insulating member 4, and the insulating member 4 can be selected based on actual conditions.

[0052] In the above embodiment, the insulating member 4 is provided to provide insulation between the conveying medium and the base 1, as well as insulation between the base 1 and the connecting assembly 2. This reduces the probability of pitting or large-area corrosion caused by shedding or local damage of the insulating material during use, thereby reducing the probability of damage to the insulating structure and improving the insulation effect.

[0053] In some embodiments of the present application, Figure 2 As shown, the base 1 includes a main body 11 and an extension piece 12, and both the main body 11 and the extension piece 12 are provided with a cavity; along the length direction of the base 1, the main body 11 and the extension piece 12 are connected; along the circumferential direction of the extension piece 12, an annular boss is formed on the outer wall of the extension piece 12 away from the center of the extension piece 12; along the length direction of the base 1, the end face of the insulating piece 4 is in contact with the end face of the boss.

[0054] In the embodiment of the present application, the base 1 can be configured to have a structure including a main body 11 and an extension 12. Both the main body 11 and the extension 12 can be provided with a cavity, and the main body 11 and the extension 12 are connected so that the conveying medium can pass between the main body 11 and the extension 12. Along the circumferential direction of the extension 12, an annular boss is formed from the outer side wall of the extension 12 in a direction away from the center of the extension 12, providing a mounting point for other parts, thereby facilitating the connection between the base 1 and the connecting component 2. Along the length direction of the base 1, taking the base 1 as an example of a pipe, it can be understood that along the axial direction of the pipe, the end face of the insulating member 4 can be fitted with the end face of the boss, so that an insulating structure is formed between the boss and the connecting component 2.

[0055] For example, the main body 11 can be a short central tube, and the extension 12 can be a central flange. There can be one short central tube and two flanges, with the two flanges positioned at either end of the short central tube. One end of the short central tube is connected to one of the flanges, while the other end of the short central tube is connected to the other flange. The inner and outer diameters of the short central tube and the flanges can be identical to facilitate the passage of the conveying medium and facilitate assembly by personnel.

[0056] As another example, the middle short pipe and the middle flange can be welded together at their connection locations by gang welding. Alternatively, the middle short pipe and the middle flange can be connected by other methods that meet connection strength, insulation performance, and other construction requirements. The connection method between the middle short pipe and the middle flange is not specifically limited in the embodiments of the present application.

[0057] In the above embodiment, since the main body 11 and the extension piece 12 are provided, the main body 11 and the extension piece 12 can extend the distance between the protected side and the unprotected side of the pipeline, increase the resistance of the medium between the two insulating ends, so that the resistance of the insulating portion of the pipeline can basically eliminate the current carried by the conveying medium, reduce the probability of pipeline conduction, and improve the insulation effect; on the other hand, compared with the method of increasing the length of the pipeline through an integrated molding process, the present application is convenient for the staff to assemble and transport.

[0058] In some embodiments of the present application, reference Figure 3 , Figure 3A cross-sectional view shows the overall structure of the connection assembly 2. The connection assembly 2 includes a first connection member 21 and a second connection member 22, each of which is provided with a cavity. The first connection member 21 is connected to the second connection member 22. A protrusion is formed on the outer wall of the first connection member 21 in the direction away from the center of the first connection member 21 along the circumferential direction of the first connection member 21. The protrusion is adapted to the annular boss. The extension member 12 is disposed between the body 11 and the first connection member 21.

[0059] In the embodiment of the present application, the connection assembly 2 can be configured to include a first connection member 21 and a second connection member 22. Each of the first connection member 21 and the second connection member 22 can be provided with a cavity; when the first connection member 21 and the second connection member 22 are connected, the cavity on the first connection member 21 and the cavity on the second connection member 22 can communicate. A protrusion is provided on the outer wall of the first connection member 21 along the circumferential direction of the first connection member 21. The protrusion extends from the outer wall of the first connection member 21 in a direction away from the center of the first connection member 21. The size of the protrusion can match the size of the protruding ring, and the shape of the protrusion can match the shape of the protruding ring. The extension member 12 can be provided between the body 11 and the protrusion.

[0060] For example, the first connecting member 21 can be an end flange, and the second connecting member 22 can be an end short tube. For example, if the main body 11 is a middle short tube and the extension 12 is a middle flange, the end short tube, end flange, middle flange, and middle short tube are connected in sequence. The ends of the middle flange can be connected to a connecting assembly 2, respectively. Thus, two connecting assemblies 2, a base body 1, and an insulating sealing assembly 3 can form an integrated structure.

[0061] As another example, the inner diameters of the end flanges, end short tubes, middle flange, and middle short tube can be the same to facilitate assembly of the corresponding parts. The end flanges and middle flanges are provided with stepped surfaces, which can be understood as having two different outer diameters. The smaller outer diameter can be the same as the outer diameter of the middle short tube and the end short tubes. This arrangement provides accommodation space at the locations of the stepped surfaces of the end flanges and middle flanges, facilitating installation of the insulating seal assembly 3 between the base 1 and the connecting assembly 2, and facilitating operation by personnel.

[0062] As another example, the end flange and the end short pipe can be connected by welding. For example, welding can be performed at the end surfaces of the end flange and the end short pipe that are close to each other. The embodiment of the present application does not specifically limit the connection method of the end flange and the end short pipe.

[0063] In the above embodiment, since the first connector 21 and the second connector 22 are provided, the first connector 21 and the second connector 22 provide some installation points for the insulating sealing assembly 3, so that the insulating sealing assembly 3 can be installed on the base 1.

[0064] In some implementations of this application, reference is made to Figure 4 , Figure 4 A cross-sectional view of the structure of the first insulating ring 31 in the insulating sealing assembly 3 is shown. The insulating sealing assembly 3 includes the first insulating ring 31, which is positioned between the first connector 21 and the extension 12. The first insulating ring 31 is provided with a cavity, one end face of the first insulating ring 31 is connected to the first connector 21, and the other end face is connected to the extension 12. When the first connector 21 and the extension 12 are both connected to the first insulating ring 31, the cavities on the second connector 22, the first connector 21, the first insulating ring 31, the extension 12, and the body 11 are sequentially connected.

[0065] In the embodiment of the present application, the insulating sealing assembly 3 can be configured to include a first insulating ring 31. The first insulating ring 31 can be disposed between the first connector 21 and the extension 12; one end of the first insulating ring 31 is connected to the extension 12, and the other end is connected to the first connector 21; the first insulating ring 31 is provided with a cavity. When the extension 12, the first connector 21, and the insulating ring are connected, the cavities on the second connector 22, the first connector 21, the first insulating ring 31, the extension 12, and the body 11 are sequentially connected, allowing the conveying medium to pass through the insulating short tube.

[0066] For example, if the extension member 12 is a middle flange and the first connecting member 21 is an end flange, the inner diameter of the first insulating ring 31 can be the same as the inner diameters of the middle and end flanges. The axes of the first insulating ring 31, the middle flange, and the end flanges can coincide, or nearly coincide, with each other. This facilitates installation of the first insulating ring 31 between the extension member 12 and the first connecting member 21.

[0067] In the above embodiment, since the first insulating ring 31 is provided, the extension piece 12 and the first connecting piece 21 can be connected through the provided first insulating ring 31. Compared with the extension piece 12 being directly connected to the first connecting piece 21, the present application can improve the sealing and insulation performance of the product.

[0068] In some implementations of this application, Figure 4 As shown, an elastic member 32 is provided on the circumference of the first insulating ring 31 ; when the first connecting member 21 is subjected to a force, the elastic member 32 can be deformed.

[0069] In the embodiment of the present application, an elastic member 32 may be provided on the circumferential side of the first insulating ring 31 . When the elastic member 32 or other components connected to the elastic member 32 are subjected to a force, the elastic member 32 may be deformed.

[0070] For example, the elastic member 32 may be an elastic sealing ring having elasticity and a sealing effect. For example, the inner wall of the elastic member 32 may be provided with an embedding groove, the size of which may match the size of the first insulating ring 31, so that the elastic member 32 can be sleeved on the outer wall of the first insulating ring 31.

[0071] In the above embodiment, since the elastic member 32 is provided, the elastic member 32 can provide auxiliary support. When the first insulating ring 31 is subjected to a force, the elastic member 32 is pre-tightened and the elastic member 32 is deformed, but a certain amount of deformation margin is still retained, so that the deformation of the pipeline is compensated when it is subjected to an external force load, so that the product still has good sealing performance when it is deformed by an external load.

[0072] In some embodiments of the present application, reference Figure 5 , Figure 5 A schematic diagram shows the structure of the second insulating ring 36, second insulating filler 35, and sealing adhesive 34 in the insulating sealing assembly 3. A hook ring 33 is provided outside the connecting assembly 2 and the base 1. The hook ring 33 is provided with a receiving cavity. The insulating sealing assembly 3, the extension member 12, and the first connecting member 21 can be placed in the receiving cavity and connected to form an integrated structure by the hook ring 33.

[0073] In an embodiment of the present application, the hook ring 33 can be provided with a corresponding avoidance structure, for example, a accommodating cavity is provided; the extension member 12 and the first connecting member 21 are covered by the accommodating cavity, and part of the structure of the extension member 12 and the first connecting member 21 can be placed in the accommodating cavity.

[0074] For example, taking the extension member 12 as a middle flange and the first connecting member 21 as an end flange, the axial direction of the hook ring 33 can coincide with, or nearly coincide with, the axes of the middle flange and the end flange, so that the hook ring 33 can be sleeved outside the middle flange and the end flange.

[0075] In another example, the inner wall of the hook ring 33 is provided with a stepped structure, such as an "L"-shaped structure. The outer walls of the middle and end flanges are also provided with matching "L"-shaped structures. When the first insulating ring 31 is mounted on the middle and end flanges using the "L"-shaped structure, the end short tubes, end flanges, middle flange, and middle short tubes are sequentially connected, allowing the conveying medium to pass smoothly through the insulating short tubes.

[0076] For ease of understanding, the two differently sized inner sidewalls of the hook ring 33 are referred to as the large end and small end, and the two differently sized outer sidewalls of the end flange are referred to as the large end and small end. The inner diameter of the small end of the hook ring 33 can be slightly larger than the outer diameter of the small end of the end flange, and the inner diameter of the large end of the hook ring 33 can be slightly larger than the outer diameter of the large end of the end flange. This allows the hook ring 33 to be fitted over both the end flange and the middle flange, with accommodation space formed between the inner sidewall of the hook ring 33 and the outer sides of the end flange and the middle flange.

[0077] Alternatively, the outer diameter of the first insulating ring 31 can be set to be the same as the inner diameter of the large end of the hook ring 33. In this way, the elastic member 32 can be omitted, and an annular groove can be provided on the end surfaces of the first connecting member 21 and the extension member 12 near each other, and an "O" ring can be installed in the annular groove to achieve a sealing effect.

[0078] As another example, if the extension 12 is a central flange, the hook ring 33 can be welded to the extension 12. After welding, the inner wall of the hook ring 33 abuts the outer wall of the central flange, improving the sealing reliability of the overall structure. This arrangement allows for connection to the pipeline as a whole, without the need for assembly and disassembly during field use.

[0079] It is understood that to minimize the impact of heat generated during welding on the performance of the insulating and sealing assembly 3 and other non-metallic components, a certain distance is reserved between the weld openings of the hook 33 and the middle flange and the other components of the insulating and sealing assembly 3. Furthermore, necessary measures should be taken during welding, such as water cooling and intermittent welding, to strictly control the welding temperature and reduce the probability of insulation and / or sealing failure.

[0080] Furthermore, during the process of welding the middle flange and the hook ring 33 , the weld can be set at the end surface positions of the middle flange and the hook ring 33 , or at corresponding positions along the radial direction as required.

[0081] In the above embodiment, since a hook ring 33 is provided, the extension member 12 and the first connecting member 21 can be connected through the provided hook ring 33. On the basis of meeting the sealing and insulation requirements, the insulating short tube can be connected to other pipelines as a whole, which is convenient for the staff to assemble; and can meet the use requirements of different working conditions.

[0082] In some embodiments of the present application, Figure 5As shown, the insulating sealing assembly 3 also includes a second insulating filler 35, a second insulating ring 36 and a sealing adhesive 34; the second insulating filler 35, the second insulating ring 36 and the sealing adhesive 34 are all arranged between the hook ring 33 and the first connector 21; the second insulating filler 35 and the second insulating ring 36 are arranged on the peripheral side of the first connector 21, and the second insulating filler 35 is fitted with the second insulating ring 36; the sealing adhesive 34 is arranged on the protrusion, and the sealing adhesive 34 is fitted with the second insulating ring 36; the second insulating filler 35, the second insulating ring 36 and the insulating ring constitute an insulating space to form electrical insulation isolation between the first connector 21 and the hook ring 33.

[0083] In the embodiment of the present application, the insulating sealing assembly 3 can also be configured as a structure including a second insulating filler 35, a second insulating ring 36, and a sealing adhesive 34. The second insulating filler 35, the second insulating ring 36, and the sealing adhesive 34 can all be disposed in the accommodation space between the hook ring 33 and the first connector 21 to achieve insulation between the first connector 21 and the hook ring 33. Furthermore, the second insulating filler 35, the second insulating ring 36, and the sealing adhesive 34 can fill the accommodation space to achieve a sealing effect.

[0084] Exemplarily, the second insulating ring 36 can be a support ring, whose axis coincides, or nearly coincides, with the axis of the end flange. The support ring can be fitted over the outer wall of the end flange, with its outer wall slightly smaller than the inner diameter of the larger end of the hook ring 33. When fitted over the end flange, the support ring is located at the junction of the smaller and larger ends of the end flange, with its outer wall abutting against the inner wall of the larger end of the hook ring 33. The support ring provides insulation, providing insulation between the flange end and the hook ring 33.

[0085] In another example, the second insulating filler 35 can be an insulating filler. By filling the insulating filler between the end flange and the hook ring 33, the end flange and the hook ring 33 are insulated. The present embodiment does not limit the specific material of the insulating filler, as long as it meets the insulation and assembly requirements.

[0086] In another example, the sealing adhesive 34 can be set on the outer side wall of the small end of the end flange, the inner side wall of the sealing adhesive 34 is in contact with the outer side wall of the small end of the end flange, the outer side wall of the sealing adhesive 34 is in contact with the inner side wall of the small end of the hook ring 33, and the second insulating filling 35 is set between the sealing adhesive 34 and the second insulating ring 36.

[0087] The sealing adhesive 34 , the second insulating filler 35 and the second insulating ring 36 all have insulating functions and together constitute an insulating space to achieve insulation between the end flange and the hook ring 33 .

[0088] In the above embodiment, the sealing adhesive 34, the second insulating filler 35 and the second insulating ring 36 are provided to achieve insulation and sealing effects between the first connector 21 and the hook ring 33; when the hook ring 33 and / or the first connector 21 are subjected to a force, the sealing adhesive 34 can be deformed, so that the insulating channel between the hook ring 33 and the first connector 21 is always in a closed state, thereby improving the insulation effect.

[0089] In some embodiments of the present application, Figure 3 and Figure 5 As shown, a first insulating filler 37 is provided on the periphery of the first connecting member 21, the first insulating filler 37 is in contact with the elastic member 32, and the first insulating filler 37 is in contact with the hook ring 33; when the first connecting member 21 and / or the hook ring 33 are subjected to an action force, the elastic member 32, the extension member 12 and the first connecting member 21 can produce a certain deformation to offset the external action force, so that the insulating structure between the hook ring 33 and the first connecting member 21 maintains its initial state.

[0090] In an embodiment of the present application, a first insulating filler 37 may be provided on the outside of the first connecting member 21. The first insulating filler 37 may be provided at a position between the first connecting member 21 and the hook ring 33. When the hook ring 33 is sleeved on the outside of the first connecting member 21, the outer wall of the first insulating filler 37 may be fitted with the inner wall of the hook ring 33, and one of the end faces of the first insulating filler 37 may be fitted with the second insulating ring 36.

[0091] Exemplarily, the first insulating filler 37 may be an insulating sleeve or other parts with insulating properties.

[0092] In the above embodiment, since the first insulating filler 37 is provided, the first insulating filler 37, the second insulating ring 36, the second insulating filler 35, and the sealing adhesive 34 together constitute an insulating sealed space, thereby reducing the probability of insulation failure due to insufficient sealing.

[0093] In some embodiments of the present application, Figure 1 As shown, an anti-interference device 5 is provided on the periphery of the second connecting member 22 , one end of the anti-interference device 5 is connected to the second connecting member 22 , and the other end is connected to the hook ring 33 .

[0094] In the embodiment of the present application, an anti-interference device 5 can be provided between the hook ring 33 and the second connecting member 22 . One end of the anti-interference device 5 can be connected to the hook ring 33 , and the other end can be connected to the second connecting member 22 .

[0095] Exemplarily, the anti-interference device 5 can be selected according to the conditions of the use site, for example, a spark gap, a grounded battery, an active metal anode, a flexible anode and the like can be used.

[0096] The anode material can be an active metal material such as magnesium or zinc; or a conductive polymer can be used as the material of the flexible anode.

[0097] In the above embodiment, an anti-interference device 5 is provided between the substrate 1 and the connecting component 2, thereby reducing the probability that stray currents, induced currents, and transient lightning currents in the external environment will affect the product performance; the substrate 1 can be located at the cathode end, and the service life of the cathode can be extended by consuming the external anode or regularly replacing the anode.

[0098] The following describes the use of an insulating short tube provided in this application. When using it:

[0099] S100: Weld the main body 11 and the extension 12, and weld the first connecting member 21 and the second connecting member 22. After the main body 11 and the extension 12 are welded, a high-insulation, strong-adhesion integral insulating lining of a certain length is formed on the end surface of the extension 12, the inner side wall of the main body 11 and the extension 12 by heating, rotating or other appropriate methods. The elastic member 32 is placed on the outside of the first insulating ring 31, and one end face of the first insulating ring 31 is fitted with the extension 12, and the other end face of the first insulating ring 31 is fitted with the first connecting member 21, so that the first insulating ring 31 is placed at a corresponding position between the extension 12 and the first connecting member 21.

[0100] S200: Slide the first insulating filler 37 onto the outside of the first connector 21, and slide the second insulating ring 36 onto the outside of the first connector 21. After the first insulating filler 37 and the second insulating ring 36 are installed, slide the hook ring 33 onto the outside of the first insulating filler 37. At this time, the first insulating filler 37 and the second insulating ring 36 are located between the first connector 21 and the hook ring 33, and the first insulating filler 37 is located between the second insulating ring 36 and the first insulating ring 31. A certain pressing force is pre-applied by a dedicated pressing device to press the second insulating ring 36, the first connector 21 and the extension 12, so that the elastic member 32 can be deformed under pressure; this arrangement makes the extension 12 and the first connector 21 in a sealed state. Then weld the hook ring 33 and the extension 12.

[0101] S300: After the hook ring 33 and the extension 12 are welded, the material required for the second insulating filler 35 is filled between the hook ring 33 and the first connector 21. A sealing adhesive 34 is then applied to the outside of the first connector 21, ensuring that both the sealing adhesive 34 and the second insulating filler 35 are located between the first connector 21 and the hook ring 33. The sealing adhesive 34, the second insulating filler 35, the second insulating ring 36, and the first insulating filler 37 together form an insulating isolation channel to provide insulation between the first connector 21 and the hook ring 33. A first insulating ring 31 is positioned between the base 1 and the connector assembly 2 to electrically insulate the base 1 from the connector assembly 2. The base 1, connector assembly 2, the first insulating ring 31, and the hook ring 33 together form a cavity. A spring member 32 is provided to form a sealing structure. The insulating isolation channel and the sealing structure work together to ensure reliable sealing and good insulation between the upstream and downstream sides of the product. One end of the anti-interference device 5 is then connected to the hook ring 33, and the other end is connected to the second connector 22. After the installation is completed, the second connecting member 22 can be connected to the on-site pipeline through welding, flange connection, clamp connection or other appropriate connection methods, and the insulating short pipe can be used normally.

[0102] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0103] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An insulating short tube, characterized in that: include: A base body (1), the base body (1) being provided with a cavity, and a conveying medium passing through the cavity and from the inside of the base body (1); An insulating structure is provided on the inner side wall of the base (1), and the conveying medium is insulated from the base (1) by the insulating structure; A connecting component (2), the connecting component (2) being provided with a cavity; when the connecting component (2) is connected to the base (1), the cavity on the connecting component (2) is communicated with the cavity on the base (1), so that the conveying medium passes through the cavities in sequence; An insulating sealing component (3); the insulating sealing component (3) is arranged between the base (1) and the connecting component (2); the base (1) is connected to the connecting component (2) via the insulating sealing component (3) to insulate the base (1) from the connecting component (2).

2. The insulating short tube according to claim 1, characterized in that: An insulating member (4) is provided on the inner side wall of the base (1), and the insulating member (4) is in contact with the inner side wall of the base (1). Along the length direction of the base (1), one end of the insulating member (4) is in contact with one end face of the base (1), and the other end of the insulating member (4) is in contact with the other end face of the base (1); the conveying medium is insulated from the base (1) by the insulating member (4).

3. The insulating short tube according to claim 2, characterized in that: The base (1) comprises a main body (11) and an extension piece (12), and both the main body (11) and the extension piece (12) are provided with the cavity; along the length direction of the base (1), the main body (11) and the extension piece (12) are connected; along the circumferential direction of the extension piece (12), an annular boss is formed on the outer side wall of the extension piece (12) in a direction away from the center of the extension piece (12); along the length direction of the base (1), the end face of the insulating piece (4) is in contact with the end face of the boss.

4. The insulating short tube according to claim 3, characterized in that: The connecting assembly (2) comprises a first connecting member (21) and a second connecting member (22), wherein the first connecting member (21) and the second connecting member (22) are both provided with the cavity; the first connecting member (21) is connected to the second connecting member (22); along the circumferential direction of the first connecting member (21), a protrusion is formed on the outer wall of the first connecting member (21) in a direction away from the center of the first connecting member (21); the protrusion is adapted to the annular boss; and the extension member (12) is provided between the main body (11) and the first connecting member (21).

5. The insulating short tube according to claim 4, characterized in that: The insulating sealing assembly (3) comprises a first insulating ring (31), which is arranged between the first connecting member (21) and the extending member (12); the first insulating ring (31) is provided with a cavity, one end face of the first insulating ring (31) is connected to the first connecting member (21), and the other end face is connected to the extending member (12); when the first connecting member (21) and the extending member (12) are both connected to the first insulating ring (31), the second connecting member (22), the first connecting member (21), the first insulating ring (31), the extending member (12), and the cavity on the body (11) are sequentially connected.

6. The insulating short tube according to claim 5, characterized in that: An elastic member (32) is provided on the circumferential side of the first insulating ring (31); when the first connecting member (21) is subjected to an acting force, the elastic member (32) can be deformed.

7. The insulating short tube according to claim 6, characterized in that: The insulating sealing assembly (3) further comprises a second insulating filler (35), a second insulating ring (36) and a sealing adhesive (34); the second insulating filler (35) and the second insulating ring (36) are arranged on the peripheral side of the first connector (21), and the second insulating filler (35) and the second insulating ring (36) are bonded; the sealing adhesive (34) is arranged on the protrusion, and the sealing adhesive (34) and the second insulating ring (36) are bonded; the second insulating filler (35), the second insulating ring (36) and the sealing adhesive (34) form an insulating space.

8. The insulating short tube according to claim 7, characterized in that: The connecting assembly (2) and the outer side of the base (1) are provided with a hook ring (33), and the hook ring (33) is provided with a receiving cavity. The insulating sealing assembly (3), the extension member (12), and the first connecting member (21) are all placed in the receiving cavity and connected to form an integral structure through the hook ring (33).

9. The insulating short tube according to claim 8, characterized in that: A first insulating filler (37) is provided on the circumferential side of the first connecting member (21), the first insulating filler (37) is in contact with the second insulating ring (36), and the first insulating filler (37) is in contact with the hook ring (33); when the first connecting member (21) and / or the hook ring (33) are subjected to an action force, the elastic member (32), the extension member (12), and the first connecting member (21) are deformed to a certain extent to offset the external action force, thereby maintaining the insulating structure between the hook ring (33) and the first connecting member (21) in its initial state.

10. The insulating short tube according to claim 8, characterized in that: An anti-interference device (5) is provided on the peripheral side of the second connecting member (22), one end of the anti-interference device (5) is connected to the second connecting member (22), and the other end is connected to the hook (33).

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