Electrical insulation screwed joint for ship

Abstract

An electric insulation threaded connector for ships comprises a metal connector body, an insulation threaded inner sleeve and an insulation threaded outer sleeve. The insulated threaded inner sleeve is in threaded connection and fixation with the internal threaded end of the joint body; the insulating threaded jacket is screwed and fixed with the external threaded end of the joint body; insulating resin is filled between the insulating threaded inner sleeve and the internal threaded end of the joint body and between the threaded matching surfaces between the insulating threaded outer sleeve and the external threaded end of the joint body; the connector body comprises but not limited to a square shoulder threaded connector, a non-square shoulder threaded connector and a plug valve. The electric insulation screwed joint for the ship fills the blank of electric insulation measures at the threaded direct connection positions between pipeline accessories such as a pressure gauge, a pressure sensor and a thermometer and pipelines in a seawater pipeline system, so that the threaded direct connection positions have good electric insulation performance, the problem of galvanic corrosion between dissimilar metals is solved, and the service life of the pipeline accessories is prolonged. And the service life of pipeline accessories such as a pressure gauge, a pressure sensor and a thermometer is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of threaded joint for ship, especially relates to a threaded joint for electric insulation of ship. BACKGROUND

[0002] At present, in the seawater pipeline system of the active ship, the pipeline accessories such as pressure gauge, pressure sensor, thermometer are usually made of stainless steel and brass material, and the pipeline accessories and the pipeline in the seawater pipeline system are all directly connected in the form of thread.

[0003] However, the electric insulation measures between the pipeline accessories and the pipeline in the seawater pipeline system at the directly connected thread are still blank, and due to the galvanic corrosion effect between the dissimilar metals, the service life of the pipeline accessories such as pressure gauge, pressure sensor, thermometer is relatively low. CONTENT OF THE UTILITY MODEL

[0004] In view of the problems existing in the prior art, the utility model provides a threaded joint for electric insulation of ship, fills the blank of the electric insulation measures between the pipeline accessories such as pressure gauge, pressure sensor, thermometer and the pipeline in the seawater pipeline system at the directly connected thread, makes the directly connected thread have good electric insulation, solves the problem of galvanic corrosion between the dissimilar metals, and greatly improves the service life of the pipeline accessories such as pressure gauge, pressure sensor, thermometer.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme: a threaded joint for electric insulation of ship, comprising a metal joint body, an insulated threaded inner sleeve and an insulated threaded outer sleeve; the insulated threaded inner sleeve is fixedly screwed with the inner threaded end of the joint body; the insulated threaded outer sleeve is fixedly screwed with the outer threaded end of the joint body.

[0006] Insulating resin is filled between the screwed fitting surfaces between the insulated threaded inner sleeve and the inner threaded end of the joint body and between the insulated threaded outer sleeve and the outer threaded end of the joint body.

[0007] The joint body includes but is not limited to a flat shoulder threaded joint, a non-flat shoulder threaded joint and a plug valve.

[0008] The insulated threaded inner sleeve is screwed with the pipeline in the seawater pipeline system through the inner thread.

[0009] The insulated threaded outer sleeve is screwed with the pipeline in the seawater pipeline system through the outer thread.

[0010] The material of the insulated threaded inner sleeve and the insulated threaded outer sleeve includes but is not limited to polytetrafluoroethylene, polyether ether ketone and glass fiber reinforced unsaturated polyester.

[0011] The manufacturing processes of the insulating threaded inner sleeve and the insulating threaded outer sleeve include, but are not limited to, molding and extrusion processes and machining processes.

[0012] The insulating resins include, but are not limited to, epoxy resins, phenolic resins, polyurethane resins, and vinyl resins.

[0013] The beneficial effects of this utility model are:

[0014] This utility model of an electrically insulated threaded connector for ships fills the gap in electrical insulation measures at the direct threaded connection between pipeline accessories such as pressure gauges, pressure sensors, and thermometers and pipelines in seawater piping systems. It provides excellent electrical insulation at the direct threaded connection, solves the problem of galvanic corrosion between dissimilar metals, and thus significantly extends the service life of pipeline accessories such as pressure gauges, pressure sensors, and thermometers. Attached Figure Description

[0015] Fig. 1 This is a structural schematic diagram of a marine electrical insulation threaded joint (flat shoulder threaded joint) according to the present invention;

[0016] Fig. 2 This is a structural schematic diagram of a marine electrical insulation threaded joint (non-flat shoulder threaded joint) according to the present invention;

[0017] Fig. 3 This is a schematic diagram of the structure of a marine electrical insulating threaded joint (plug valve) according to the present invention;

[0018] In the figure, 1—metal connector body, 2—insulating threaded inner sleeve, 3—insulating threaded outer sleeve. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] like Figs. 1-3 As shown, a marine electrical insulating threaded connector includes a metal connector body 1, an insulating threaded inner sleeve 2, and an insulating threaded outer sleeve 3; the insulating threaded inner sleeve 2 is screwed and fixed to the inner thread end of the connector body 1; the insulating threaded outer sleeve 3 is screwed and fixed to the outer thread end of the connector body 1.

[0021] Insulating resin is filled between the inner thread of the insulating threaded sleeve 2 and the inner thread end of the connector body 1, and between the threaded mating surfaces of the outer thread of the insulating threaded sleeve 3 and the outer thread end of the connector body 1.

[0022] The connector body 1 includes, but is not limited to, flat-shoulder threaded connectors, non-flat-shoulder threaded connectors, and plug valves.

[0023] The insulating threaded inner sleeve 2 is threadedly connected to the pipeline in the seawater pipeline system through its internal thread.

[0024] The insulating threaded sleeve 3 is threadedly connected to the pipeline in the seawater pipeline system via external threads.

[0025] The materials of the insulating threaded inner sleeve 2 and the insulating threaded outer sleeve 3 include, but are not limited to, polytetrafluoroethylene, polyetheretherketone, and glass fiber reinforced unsaturated polyester.

[0026] The manufacturing processes of the insulating threaded inner sleeve 2 and the insulating threaded outer sleeve 3 include, but are not limited to, molding and extrusion processes and machining processes.

[0027] The insulating resins include, but are not limited to, epoxy resins, phenolic resins, polyurethane resins, and vinyl resins.

[0028] The following describes a single use of this utility model with reference to the accompanying drawings:

[0029] When pipeline accessories such as pressure gauges, pressure sensors, and thermometers need to be threaded to pipelines in seawater piping systems, the marine electrical insulating threaded connector of this utility model can be used. First, the insulating inner sleeve 2 of the marine electrical insulating threaded connector of this utility model can be threaded to the pipeline, and then the pipeline accessories such as pressure gauges, pressure sensors, and thermometers can be threaded to the insulating outer sleeve 3 of the marine electrical insulating threaded connector of this utility model, thereby realizing the installation of pipeline accessories such as pressure gauges, pressure sensors, and thermometers.

[0030] When the ship electrical insulating threaded connector of this utility model is adopted, an insulating barrier is established between the pipeline accessory and the pipeline through the insulating inner thread sleeve 2 and the insulating outer thread sleeve 3, so that the direct thread connection has good electrical insulation, thereby solving the problem of galvanic corrosion between dissimilar metals, and ultimately greatly improving the service life of pipeline accessories such as pressure gauges, pressure sensors, and thermometers.

[0031] The solutions in the embodiments are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications that do not depart from the scope of protection of this utility model are included in the scope of protection of this utility model.

Claims

1. An electrically insulating threaded joint for a marine vessel, characterized in that: The metal joint body, the insulating threaded inner sleeve and the insulating threaded outer sleeve; the insulating threaded inner sleeve is screwed and fixed with the inner threaded end of the joint body; the insulating threaded outer sleeve is screwed and fixed with the outer threaded end of the joint body.

2. An electrically insulating threaded joint for a marine vessel according to claim 1, characterized in that: The insulating threaded inner sleeve and the insulating threaded outer sleeve are filled with insulating resin between the threaded connection surfaces.

3. An electrically insulating threaded joint for a marine vessel according to claim 1, characterized in that: The joint body includes but is not limited to the flat shoulder threaded joint, the non-flat shoulder threaded joint and the plug valve.

4. An electrically insulating threaded joint for a marine vessel according to claim 1, characterized in that: The insulating threaded inner sleeve is screwed with the pipeline in the seawater piping system through the inner thread.

5. An electrically insulating threaded joint for a marine vessel according to claim 1, characterized in that: The insulating threaded outer sleeve is screwed with the pipeline in the seawater piping system through the outer thread.

6. An electrically insulating threaded joint for a marine vessel according to claim 1, characterized in that: The material of the insulating threaded inner sleeve and the insulating threaded outer sleeve includes but is not limited to the polytetrafluoroethylene, the polyether ether ketone and the glass fiber reinforced unsaturated polyester.

7. An electrically insulating threaded joint for a marine vessel according to claim 1, characterized in that: The manufacturing process of the insulating threaded inner sleeve and the insulating threaded outer sleeve includes but is not limited to the mold extrusion process and the mechanical processing process.

8. An electrically insulating threaded joint for a marine vessel according to claim 2, characterized in that: The insulating resin includes but is not limited to the epoxy resin, the phenolic resin, the polyurethane resin and the vinyl resin.

Images