CN218415785U

CN218415785U - Submarine heat tracing cable connection sealing element

Info

Publication number: CN218415785U
Application number: CN202222269276.2U
Authority: CN
Inventors: 肖洪朋; 衣晓燕; 逯启信
Original assignee: Shandong Huaning Heat Technology Co ltd
Current assignee: Shandong Huaning Heat Technology Co ltd
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2023-01-31
Anticipated expiration: 2032-08-29

Abstract

The utility model relates to an electric tracing area production facility field discloses a seabed companion's hot cable junction sealing member very much. It includes the main part pipe, and the inboard at main part pipe both ends is the cone structure, the supporting toper silastic-tube of cone structure, and the both ends of main part pipe are threaded connection internal pressure pipe and external pressure pipe in proper order respectively: a fluorosilicone rubber O-shaped sealing washer and a stainless steel washer are arranged between the inner pressure pipe and the outer pressure pipe. The utility model adopts the double-sealing mode of the conical silicon rubber pipes at the two ends to seal the connectors of the two sections of cables in the main body pipe, and then prevents water from entering through the multi-layer sealing of the internal pressure pipe and the external pressure pipe; adopt the stainless steel bushing to restrict the outer end of toper silicone rubber pipe, prevent that toper silicone rubber pipe from receiving the extrusion back, the outer end scatters, influences sealed effect. The main pipe, the inner pressure pipe and the outer pressure pipe are all made of polytetrafluoroethylene resin with better pressure resistance and temperature resistance, the service pressure is 5MPa, the breakdown voltage is 20kV/mm, and the submarine pressure-reducing pipe can adapt to the 500-meter seabed environment.

Description

Submarine heat tracing cable connection sealing element

Technical Field

The utility model relates to an electric tracing area production facility field, in particular to seabed heat tracing cable junction sealing member.

Background

After oil is produced from an oil field, the oil storage capacity of a drilling platform is limited, the drilled oil must be conveyed to an oil depot beyond hundreds of seas through a submarine oil conveying pipeline, and in the submarine conveying process, if the drilled oil is cold, the viscosity is high, and the flow of the oil is not facilitated, so that the oil conveying is not facilitated, and the conveying efficiency is influenced, therefore, a group of electric heating belts are added on the oil conveying pipeline, and three oil conveying pipelines form a loop; however, the length of the submarine oil pipeline is long, and the depth is generally below 30 meters, so that a plurality of cables need to be butted, and the butted part needs to be subjected to sealing butt joint, so that the requirements on water pressure resistance and voltage resistance of the sealing device are considered.

The existing sealing device is mostly used for sealing under normal pressure and under the pressure of 0.5MPa, a sealing Glan single-layer sealing mode adopted by the crude oil submarine pipeline electric tracing heat can only be used in a region with the depth of 40 meters of seawater, the use at the depth of 100 meters and below of the seabed can not be met, the water pressure of 100 meters is 1MPa, the pressure is increased by 1MPa when the water depth is increased by 100 meters, if the existing sealing device is used, water leakage can occur, the insulation is reduced to zero, the whole power supply system is tripped, and the electric tracing effect is influenced.

Disclosure of Invention

The utility model discloses a remedy prior art's defect, provide a seabed companion's hot cable connection sealing member that plays sealed, resistance to compression effect.

The utility model discloses a realize through following technical scheme:

the utility model provides a seabed companion's hot cable junction sealing member, characterized by, includes middle main part pipe, the inboard at main part pipe both ends is the cone structure, the supporting toper silastic tube of cone structure, the both ends of main part pipe are equipped with the external screw thread, the outer end of toper silastic tube is located outside the main part pipe, the main part pipe both ends are supporting the following same structure respectively: interior pressure pipe and external pressure pipe, interior pressure intraduct comprises the thick section in the middle of and the thin section at both ends, and two sections thin sections all are furnished with the internal thread, and wherein the thin section and the main part pipe threaded connection of one end are equipped with the stainless steel bushing supporting with toper silicone rubber pipe between the two, place in proper order in the thin section of the other end behind fluorosilicone rubber O type seal ring and the stainless steel packing ring with external pressure pipe threaded connection, external pressure pipe has the external screw thread to its appearance is T shape.

The cross section of the partial section of the internal pressure pipe is quadrilateral or hexagonal.

The outer end of the outer pressure pipe is quadrilateral or hexagonal.

The main body pipe, the inner pressure pipe and the outer pressure pipe are all made of tetrafluoro materials.

The main body pipe is provided with a wrench clamping groove.

The external thread sections of the main body pipe and the external pressure pipe are sleeved with sealing fluorosilicone rubber gaskets.

The beneficial effects of the utility model are that:

the utility model adopts the double sealing mode of the conical silicon rubber pipes at the two ends to seal the connectors of the two sections of cables in the main body pipe, and then prevents water from entering through the multi-layer sealing of the internal pressure pipe and the external pressure pipe; adopt the stainless steel bushing to restrict the outer end of toper silicone rubber pipe, prevent that toper silicone rubber pipe from receiving the extrusion back, the outer end scatters, influences sealed effect. The main pipe, the inner pressure pipe and the outer pressure pipe are all made of polytetrafluoroethylene resin with better pressure resistance and temperature resistance, the service pressure is 5MPa, the breakdown voltage is 20kV/mm, and the submarine pressure-reducing pipe can adapt to the 500-meter seabed environment.

Drawings

The invention will be further described with reference to the accompanying drawings:

FIG. 1 is a schematic view of the split structure of the present invention;

FIG. 2 is a schematic sectional view of the present invention;

FIG. 3 is a schematic sectional view of a stainless steel sleeve;

FIG. 4 is a schematic view of the structure of the outer tube in the direction A of FIG. 1;

FIG. 5 is a schematic view of the structure of the internal pressure tube A in FIG. 1.

In the figure, a main pipe 1, a wrench clamping groove 2, a conical silicon rubber pipe 3, a sealing fluorosilicone rubber gasket 4, an internal pressure pipe 5, a stainless steel sleeve 6, a fluorosilicone rubber O-shaped sealing gasket 7, a stainless steel gasket 8 and an external pressure pipe 9 are arranged.

Detailed Description

The attached drawings are specific embodiments of the invention. As shown in fig. 1 to 5, the submarine heat tracing cable connection sealing member comprises a main pipe 1 in the middle, wherein the main pipe 1 is made of tetrafluoro material (polytetrafluoroethylene resin), two symmetrical wrench clamping grooves 2 are formed in the outer wall of the main pipe 1, two ends in the main pipe 1 are conical and are matched with a conical silicone rubber pipe 3, the conical silicone rubber pipe 3 is also straight-cylindrical, and after the conical silicone rubber pipe 3 is installed, the outer end of the conical silicone rubber pipe extends out of the main pipe 1 for a small section; the outer diameters of the two ends of the main pipe 1 are thinner than the middle part, then external threads are carved on the thin part, and the two ends of the main pipe 1 are provided with the same structures in a matching way:

set up a sealed fluorine silicon rubber packing ring 4 on the thin section, then through the internal pressure pipe 5 of an internal thread of external screw thread supporting, the both ends of pressing pipe 5 also all are the internal thread, the cross section of its partly is quadrangle or hexagon, is convenient for screw up with the spanner, presses the inside part three-section of pipe 5: the middle thin section and the two end thick sections are matched with a stainless steel sleeve 6 at the end in threaded connection with the main body pipe 1, as shown in figure 3, the stainless steel sleeve 6 can be just placed in the thick section of the internal pressure pipe 5 and can be just covered on the outer end of the conical silicon rubber pipe 3 to restrain the conical silicon rubber pipe 3 and prevent the outer end of the conical silicon rubber pipe from being extruded and scattered to influence the sealing effect, and the middle thin section is equal to the thickness of a cable; a fluorosilicone rubber O-shaped sealing washer 7 and a stainless steel washer 8 are sequentially placed at the joint of the thick section and the thin section of the other end of the outer pressure pipe 9, then the outer pressure pipe 9 is screwed tightly, the outer pressure pipe 9 is T-shaped in appearance, the cross section of the outer end portion of the outer pressure pipe is quadrilateral or hexagonal, the rest of the outer pressure pipe 9 can be provided with external threads, a sealing fluorosilicone rubber washer 4 is sleeved on the outer pressure pipe 9 and then screwed onto the inner pressure pipe 5, and the stainless steel washer 8 and the fluorosilicone rubber O-shaped sealing washer 7 are extruded, so that secondary sealing is formed.

The outer pressure pipe 9 and the inner pressure pipe 5 are both made of tetrafluoro material (polytetrafluoroethylene resin).

The assembly process is as follows:

respectively sleeving a sealing fluorosilicone rubber gasket 4 on an external pressure pipe 9 and a main body pipe 1, sequentially sleeving one group of external pressure pipe 9, a stainless steel gasket 8, a fluorosilicone rubber O-shaped sealing gasket 7, an internal pressure pipe 5, a stainless steel sleeve 6 and a conical silicone rubber pipe 3 into one cable, sequentially sleeving the other group of external pressure pipe 9, the stainless steel gasket 8, the fluorosilicone rubber O-shaped sealing gasket 7, the internal pressure pipe 5, the stainless steel sleeve 6 and the conical silicone rubber pipe 3 into the other cable, sleeving the main body pipe 1 on any one cable, connecting the two cables together, moving the main body pipe 1 to a joint, covering the structure part with the main body pipe 1, screwing the internal pressure pipe 5 and the main body pipe 1, and screwing the external pressure pipe 9 and the internal pressure pipe 5.

Other technical features than those described in the specification are known to those skilled in the art.

Claims

1. The utility model provides a seabed companion's hot cable connection sealing member, characterized by, includes middle main part pipe (1), the inboard at main part pipe (1) both ends is the cone structure, the supporting toper silastic tube (3) of cone structure, the both ends of main part pipe (1) are equipped with the external screw thread, the outer end of toper silastic tube (3) is located outside main part pipe (1), main part pipe (1) both ends are supporting the following same structure respectively: internal pressure pipe (5) and external pressure pipe (9), internal pressure pipe (5) inside comprises the thick section in the middle of and the thin section at both ends, and two sections thin sections all are furnished with the internal thread, and wherein the thin section of one end and main part pipe (1) threaded connection are equipped with between the two with supporting stainless steel bushing (6) of toper silicone rubber pipe (3), place in proper order in the thin section of the other end after fluorosilicone rubber O type seal ring (7) and stainless steel packing ring (8) with external pressure pipe (9) threaded connection, external pressure pipe (9) have the external screw thread to its appearance is T shape.

2. The subsea heat trace cable connection seal according to claim 1, characterized in that the cross-section of the partial section of the inner pressure pipe (5) is quadrangular or hexagonal.

3. The submarine heat tracing cable connection seal according to claim 1, wherein the outer end of the outer pressure pipe (9) is quadrangular or hexagonal.

4. The submarine heat tracing cable connection seal according to claim 1, wherein the main body pipe (1), the inner pressure pipe (5) and the outer pressure pipe (9) are made of tetrafluoro material.

5. The submarine heat tracing cable connection seal according to claim 1, wherein said main body pipe (1) is provided with a wrench slot (2).

6. The submarine heat tracing cable connection sealing member according to claim 1, wherein the external thread sections of the main pipe (1) and the external pressure pipe (9) are sleeved with sealing fluorosilicone rubber gaskets (4).