Insulating and electricity-insulating connecting pipe fitting

Abstract

The utility model provides an insulating and electricity-isolating connecting pipe fitting, and relates to the technical field of pipeline connecting pieces. Comprising a first metal connecting section, a second metal connecting section, a sealing piece and an insulating layer, the first metal connecting section and the second metal connecting section are embedded into the two ends of the insulating layer in an injection molding mode, the first metal connecting section and the second metal connecting section are arranged in a spaced mode, and the sealing piece is located in the first metal connecting section. Wherein the first metal connecting section and the second metal connecting section can be used for being connected with a pipeline or equipment, and the insulating and electricity-isolating layer is adopted as a structure for installing, connecting and isolating the first metal connecting section and the second metal connecting section, so that when the equipment leaks electricity, leakage current can be transmitted to the insulating and electricity-isolating layer along with metal; therefore, the electric power accident caused by the fact that the leakage current is directly transmitted to the pipeline is avoided, and the use safety of the pipeline and equipment is improved through the insulating and electricity-isolating connecting pipe fitting.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connectors, in particular to an insulating electrical isolation connecting pipe fitting. Background Art

[0002] In the process of connecting pipelines and pipelines and connecting pipelines and equipment, pipeline connectors play a key role. It is necessary to ensure that the lines at both ends of the pipeline connectors are tightly connected, and at the same time, it is also necessary to ensure that the connected lines have good sealing capabilities.

[0003] In the existing gas connection pipeline system, most gas water heaters are directly connected to metal gas transmission pipelines to achieve gas transmission. When there is a risk of leakage in the gas water heater in this connection mode, the leakage current is directly transmitted through the metal gas transmission pipeline, which can easily cause the gas transmission pipeline to heat up and generate sparks, affecting the service life of the gas pipeline, and may even cause serious accidents and endanger pipeline transportation safety.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The utility model aims to provide an insulating electrical isolation connecting pipe fitting, which can timely attenuate the leakage current in the equipment and avoid power accidents.

[0006] The embodiment of the utility model is achieved as follows:

[0007] In the first aspect, the utility model provides an insulating and electrically isolating connecting pipe fitting, comprising a first metal connecting section, a second metal connecting section, a seal and an insulating and electrically isolating layer, wherein the first metal connecting section and the second metal connecting section are injection-molded and embedded at both ends of the insulating and electrically isolating layer, and the first metal connecting section and the second metal connecting section are spaced apart, and the seal is located in the first metal connecting section.

[0008] Optionally, a first dovetail groove is provided on an outer surface of the first metal connecting section.

[0009] Optionally, the number of the first dovetail grooves is 1 to 5.

[0010] Optionally, a second dovetail groove is provided on the outer surface of the second metal connecting section.

[0011] Optionally, the number of the second dovetail grooves is 1 to 5.

[0012] Optionally, the sealing member is accommodated at an end of the first metal connecting section close to the second metal connecting section.

[0013] Optionally, a limiting member is provided at one end of the first metal connecting section close to the second metal connecting section, and the sealing member contacts and limits the position of the limiting member.

[0014] Optionally, the first metal connecting section is provided with an internal thread, and the second metal connecting section is provided with an external thread, and a region of the second metal connecting section where the external thread is located protrudes out of the insulating and electrical isolation layer.

[0015] Optionally, the inner diameter of the insulating and electric-isolating layer, the inner diameter of the second metal connecting section and the inner diameter of the limiting member are the same.

[0016] Optionally, the outer surface of the insulating and isolating layer is provided with hexagons.

[0017] The beneficial effects of the embodiments of the utility model are:

[0018] The utility model provides an insulating and electrically isolating connecting pipe fitting, wherein a first metal connecting section and a second metal connecting section can be used to connect to a pipeline or equipment. By adopting an insulating and electrically isolating layer as a structure for installing, connecting and isolating the first metal connecting section and the second metal connecting section, when there is leakage in the equipment, the leakage current will be transmitted along with the metal to the insulating and electrically isolating layer, and then be eliminated by the insulating material, thereby avoiding electrical accidents caused by the leakage current being directly transmitted to the pipeline. The insulating and electrically isolating connecting pipe fitting improves the safety of pipeline and equipment use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the structure of an insulating and electrically isolating connecting pipe provided in an embodiment of the utility model;

[0021] Figure 2 A cross-sectional view of an insulating and electrically isolating connecting pipe provided in an embodiment of the utility model;

[0022] Figure 3 A cross-sectional view of a first metal connecting section provided in an embodiment of the utility model;

[0023] Figure 4 A cross-sectional view of a second metal connecting section provided in an embodiment of the utility model;

[0024] Figure 5 A cross-sectional view of a seal provided in an embodiment of the utility model.

[0025] Icon: 100 - insulating and electrically isolating connecting pipe; 110 - first metal connecting section; 111 - internal thread; 112 - limiting piece; 113 - first dovetail groove; 120 - second metal connecting section; 121 - external thread; 122 - second dovetail groove; 130 - sealing piece; 140 - insulating and electrically isolating layer. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0031] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Please refer to Figure 1 The embodiment of the utility model provides an insulating and electrical isolation connecting pipe 100, which is used for connecting gas pipelines to ensure the safety of gas transportation.

[0033] Specifically, the insulating and isolating connecting pipe 100 provided in this embodiment is used to connect a gas water heater and a gas transmission pipeline. The existing gas water heater is directly connected to the gas transmission pipeline. When a leakage fault occurs in the gas water heater, the leakage current is transmitted to the gas transmission pipeline along with the metal, which may cause the gas transmission pipeline to heat up or even generate sparks, which may easily threaten life safety. By connecting with the insulating and isolating connecting pipe 100 provided in this embodiment, the leakage current will be eliminated by the insulating and isolating connecting pipe 100, avoiding the leakage current from being transmitted to the gas transmission pipeline, thereby ensuring the safe use of the gas water heater.

[0034] Please refer to Figure 2 In the present embodiment, in order to achieve the above-mentioned effects, the insulating and electrically isolating connecting pipe fitting 100 includes a first metal connecting segment 110, a second metal connecting segment 120, a seal 130 and an insulating and electrically isolating layer 140. The first metal connecting segment 110 and the second metal connecting segment 120 are injection-molded and embedded in both ends of the insulating and electrically isolating layer 140, and the first metal connecting segment 110 and the second metal connecting segment 120 are spaced apart, and the seal 130 is located in the first metal connecting segment 110.

[0035] It is understandable that in order to ensure the stability of the connection, the connection area of ​​the pipeline is usually a metal structure, but the metal structure is conductive. When the equipment has a leakage risk, the leakage current may be transmitted along with these metal structures, which may eventually lead to a safety accident. In order to ensure the stable connection of the connection area of ​​the pipeline and avoid the propagation of leakage current, the applicant uses the first metal connection segment 110 and the second metal connection segment 120 as elements connected to the two pipelines to be connected respectively, and uses an insulating isolation layer 140 to isolate the first metal connection segment 110 and the second metal connection segment 120. When the leakage current is transmitted to the insulating isolation layer 140 along with the metal, the internal resistance of the insulating isolation layer 140 is large, and the leakage current is attenuated in the insulating isolation layer 140, thereby blocking the propagation of the leakage current and ensuring the safe use of the gas pipeline.

[0036] Among them, the first metal connecting section 110 and the second metal connecting section 120 can be made of common metal materials on the market, such as copper, stainless steel and other materials. The materials of the first metal connecting section 110 and the second metal connecting section 120 can be the same or different, and can be specifically selected according to the material of the pipeline connected thereto to ensure that the first metal connecting section 110 and the second metal connecting section 120 are stably connected to the pipelines respectively connected thereto.

[0037] The material of the insulating layer 140 can also be a commonly used insulating material on the market, such as a plastic product. In this embodiment, the material of the insulating layer 140 is high-density polyethylene (HDPE).

[0038] In addition, the first metal connecting segment 110 and the second metal connecting segment 120 can be injection molded and embedded into the two ends of the insulating isolation layer 140 using existing injection molding processes. For example, the first metal connecting segment 110 and the second metal connecting segment 120 are respectively placed in corresponding positions of the mold, and then high-density polyethylene (HDPE) is injected into the mold to form the first metal connecting segment 110 and the second metal connecting segment 120 with the insulating isolation layer 140 as a whole.

[0039] The sealing member 130 may also be made of common materials on the market. In this embodiment, the sealing member 130 is a polytetrafluoroethylene (PTFE) sealing gasket, which is an annular structure and is located in the first metal connecting section 110 to prevent gas leakage in the pipeline.

[0040] Please refer to Figure 3 and Figure 4 In this embodiment, the inner wall surface of the first metal connecting section 110 is provided with an internal thread 111 for connecting to the gas water heater, and the end surface of the first metal connecting section 110 is on the same horizontal plane as the end surface of the insulating layer 140; the second metal connecting section 120 is provided with an external thread 121 for connecting to the gas transmission pipeline, and the area of ​​the second metal connecting section 120 where the external thread 121 is located protrudes from the insulating layer 140.

[0041] Please refer to Figure 2 Cooperate Figure 5 In order to limit the seal 130 , in this embodiment, a limiting member 112 is provided at one end of the first metal connecting section 110 close to the second metal connecting section 120 , and the seal 130 contacts the limiting member 112 for limiting position.

[0042] In this embodiment, the inner diameter of the insulating and electrical isolation layer 140, the inner diameter of the second metal connecting section 120 and the inner diameter of the limiter 112 are the same, and the inner diameter of the sealing member 130 is slightly larger than the inner diameter of the limiter 112 to ensure that the connection between the gas water heater and the insulating and electrical isolation connecting pipe 100 through the first metal connecting member is sealed.

[0043] Please refer to Figure 1 In this embodiment, in order to facilitate the installation of the insulating and isolating connecting pipe 100, the outer wall surface of the insulating and isolating layer 140 is provided with a hexagonal shape, and a wrench can be directly used to easily connect the insulating and isolating connecting pipe 100, the gas water heater and the gas transmission pipeline.

[0044] Please refer to Figure 3 and Figure 4 In the present embodiment, in order to avoid a gap between the first metal connecting segment 110 and the second metal connecting segment 120 and the insulating isolation layer 140, which may lead to gas leakage or separation of the metal from the insulating material, in the present embodiment, a first dovetail groove 113 is provided on the outer surface of the first metal connecting segment 110, and a second dovetail groove 122 is provided on the outer surface of the end of the second metal connecting segment 120 without the external thread 121.

[0045] By designing the structure of the dovetail groove, the connection ability between the first metal connecting segment 110 and the insulating isolation layer 140 can be improved, as well as the connection ability between the second metal connecting segment 120 and the insulating isolation layer 140, thereby preventing the first metal connecting segment 110 and the second metal connecting segment 120 from peeling off from the insulating isolation layer 140.

[0046] In this embodiment, the number of the first dovetail grooves 113 is two, and the number of the second dovetail grooves 122 is also two.

[0047] The present embodiment provides an insulating and electrical isolation connecting pipe 100, and its processing process and working principle are as follows:

[0048] Please refer to Figure 1 and Figure 2 A first metal connecting segment 110 with an internal thread 111 and a second metal connecting segment 120 with an external thread 121 at one end are placed in a mold, the first metal connecting segment 110 and the second metal connecting segment 120 are spaced apart, and one end of the first metal connecting segment 110 away from the second metal connecting segment 120 is flush with the surface of the mold, and one end of the second metal connecting segment 120 with the external thread 121 extends out of the mold, and then the mold is injection molded to form an insulating electrical connecting pipe fitting 100.

[0049] The gas water heater is connected to the insulating and electrically insulating connecting pipe fitting 100 through the internal thread 111 of the first metal connecting section 110, and the interface is sealed by the seal 130; the gas transmission pipeline is connected to the insulating and electrically insulating connecting pipe fitting 100 through the external thread 121 of the second metal connecting section 120. During the connection process of the insulating and electrically insulating connecting pipe fitting 100, a wrench can be used to clamp the hexagonal corners on the outer surface of the insulating insulation layer 140 to assist the connection of the insulating and electrically insulating connecting pipe fitting 100.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An insulating and electrical isolation connecting pipe, characterized in that: It includes a first metal connecting segment, a second metal connecting segment, a seal and an insulating layer. The first metal connecting segment and the second metal connecting segment are injection-molded and embedded at both ends of the insulating layer. The first metal connecting segment and the second metal connecting segment are spaced apart, and the seal is located in the first metal connecting segment.

2. The insulating electrical connection pipe fitting according to claim 1, characterized in that: The outer surface of the first metal connecting section is provided with a first dovetail groove.

3. The insulating and electrically isolating connecting pipe fitting according to claim 2, characterized in that: The number of the first dovetail grooves is 1 to 5.

4. The insulating electrical isolation connecting pipe fitting according to claim 1, characterized in that: A second dovetail groove is provided on the outer surface of the second metal connecting section.

5. The insulating and electrically isolating connecting pipe fitting according to claim 4, characterized in that: The number of the second dovetail grooves is 1 to 5.

6. The insulating and electrically isolating connecting pipe fitting according to claim 1, characterized in that: The sealing member is accommodated at one end of the first metal connecting section close to the second metal connecting section.

7. The insulating and electrically isolating connecting pipe fitting according to claim 6, characterized in that: A limiting member is provided at one end of the first metal connecting section close to the second metal connecting section, and the sealing member contacts and limits the position of the limiting member.

8. The insulating and electrically isolating connecting pipe fitting according to claim 7, characterized in that: The first metal connecting section is provided with an internal thread, and the second metal connecting section is provided with an external thread. The area of ​​the second metal connecting section where the external thread is located protrudes from the insulating and electric-isolating layer.

9. The insulating electrical isolation connecting pipe according to claim 8, characterized in that: The inner diameter of the insulating and electric-isolating layer, the inner diameter of the second metal connecting section and the inner diameter of the limiting member are the same.

10. The insulating electrical isolation connecting pipe fitting according to claim 1, characterized in that: The outer surface of the insulating and electric-isolating layer is provided with hexagons.

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