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Electric penetrating sealing joint for low temperature glass package

A technology of electrical penetration and low-temperature glass, which is applied in the direction of cable accessories of low-temperature cables to achieve the effect of preventing leakage

Inactive Publication Date: 2014-03-12
DALIAN DEEP BLUE PUMP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is no domestic professional manufacturer for the low-temperature electrical penetration sealing joints matched with the low-temperature submersible pump.

Method used

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  • Electric penetrating sealing joint for low temperature glass package
  • Electric penetrating sealing joint for low temperature glass package

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Such as figure 2 As shown, the low-temperature glass-encapsulated electrical penetration sealing joint includes a metal connecting flange 6, an insulator 5, a glass seal 8, and an intermediate pressure monitoring chamber cavity 7. The metal connecting flange 6 is connected to the intermediate pressure monitoring cavity cavity, and the metal connection method The flange 8 is provided with a through hole opposite to the intermediate pressure monitoring cavity cavity 7, and the metal conductor 4 passes through the metal connecting flange 6 and the intermediate pressure monitoring cavity cavity 7 through the through hole, and the metal conductor 4 connects the metal connecting flange 6 and the intermediate pressure monitoring cavity. The monitoring cavity cavity 7 penetrates the metal conductor 4 and covers the insulator 5. After the metal connecting flange 6 and the intermediate pressure monitoring cavity cavity 7 are connected, an intermediate pressure monitoring cavity i...

Embodiment 2

[0018] The basic structure of Embodiment 2 is the same as that of Embodiment 2, and a pressure detection device can also be arranged in the intermediate pressure monitoring chamber formed by the intermediate pressure monitoring chamber body 7 and the metal connecting flange 6 .

[0019] In order to detect whether the electrical through-seal joint leaks, the present invention designs a pressure detection hole in the middle pressure monitoring cavity for connecting instruments and meters. Compared with ordinary power transmission joints, this design can monitor gas more intuitively and in a timely manner. Whether it leaks.

[0020] The intermediate pressure monitoring chamber cavity 7 can also be filled with inert gas. The pressure of the inert gas in the intermediate chamber is lower than the gas pressure on the medium side and higher than the ambient pressure. The intermediate chamber is equipped with a pressure monitoring instrument, and any leakage on either side will be dete...

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Abstract

The invention relates to a sealing joint, in particular to an electric penetrating sealing joint used under the low temperature environment. An electric penetrating sealing joint for low temperature glass package is characterized in that a metal connecting flange is connected with an intermediate pressure monitoring cavity body, the position, opposite to the intermediate pressure monitoring cavity body, of the metal connecting flange is provided with a penetrating hole, a metal conductor penetrates through the metal connecting flange and the intermediate pressure monitoring cavity body through the penetrating hole, the outer parts of the positions, penetrating through the metal connecting flange and the intermediate pressure monitoring cavity, of the metal conductor are sleeved with an insulator respectively, the metal connecting flange and the intermediate pressure monitoring cavity are connected to form an intermediate pressure monitoring cavity in the interior, and the connected parts of metal conductor and the metal connecting flange and the connected parts of metal conductor and the intermediate pressure monitoring cavity are provided with glass seal respectively. Electric penetrating sealing joint can be adopted at a joint of a low temperature cable in a pump and a power cable at the atmosphere side in the outside, so that the leakage of flammable and explosive gas along the cables is effectively prevented.

Description

technical field [0001] The invention relates to a packaging joint, in particular to an electrical penetration packaging joint used in a low-temperature environment. Background technique [0002] At present, such as LNG receiving station, LNG liquefaction plant, LNG carrier, floating LNG liquefaction storage device, coal coke oven gas methanation to produce LNG device, and the transportation of low-temperature media such as alkanes and olefins in chemical devices. Cryogenic submersible pumps are required for the transportation, loading and unloading of low-temperature media, because low-temperature media such as LNG, alkanes, and olefins have the characteristics of low temperature, flammability, explosion and vaporization. Therefore, the working conditions of the pumps conveying this medium are harsh, and the requirements for materials, sealing and other aspects are very strict, and the equipment is required to have safe and reliable sealing. Due to the difficulty in design...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G15/34
Inventor 万学丽陈琪赵增辉张培基秦雪
Owner DALIAN DEEP BLUE PUMP CO LTD
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