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A composite mechanical seal device and its installation method

A mechanical sealing device and composite technology, applied in the field of sealing, can solve the problems of inability to isolate, frequent lightning strikes, and easy ignition, and achieve the effect of eliminating oil and gas space, improving sealing performance, and eliminating internal oil and gas space.

Active Publication Date: 2018-03-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there are many metal parts in the mechanical seal, which are prone to ignition after contact with the oil and gas space. The metal structural parts of the current mechanical seal device cannot be completely isolated from the space where combustible gas exists, resulting in frequent lightning strike accidents

Method used

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  • A composite mechanical seal device and its installation method
  • A composite mechanical seal device and its installation method
  • A composite mechanical seal device and its installation method

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Experimental program
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Effect test

Embodiment

[0017] Such as Figure 1 to Figure 3 As shown, a composite mechanical seal device includes a weather shield 1 arranged on the top of the floating warehouse 8, a scraper 2 is arranged below the rain shield 1, an upper support column 3 is arranged on the upper part of the floating warehouse 8, and the floating warehouse 8 The lower part of 8 is provided with an elastic plate 5; the upper support column 3 and the elastic plate 5 are provided with a shoe plate 4; the elastic plate 5 is provided with an oil-gas diaphragm 6, and the oil-gas diaphragm 6 is provided with a diaphragm bead 7, and the diaphragm bead 7 is passed through a rivet 9 fixed.

[0018] In the above embodiments, the scraper 2 is a rubber scraper. Elastic plate 5 adopts elastic metal plate. Boot plate 4 adopts metal boot plate.

[0019] The installation method of the composite mechanical seal device of the present invention comprises the following steps: the first step is to install the shoe plate 4 and the scr...

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PUM

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Abstract

The invention relates to a combined type mechanical seal device and a mounting method thereof. The combined type mechanical seal device comprises a baffle arranged on the top of a floating vessel, a scraper plate is arranged under the baffle, upper supporting columns are arranged on the upper portion of the floating vessel, and an elastic plate is arranged on the lower portion of the floating vessel. A shoe plank is arranged between the upper supporting columns and the elastic plate. An oil-gas separation film is arranged on the elastic plate and provided with separation film pressing strips which are fixed through rivets. By means of the combined type mechanical seal device, the oil-gas space between a primary sealing device and a secondary sealing device is completely eliminated, mechanical seal metal parts are completely isolated from the oil-gas space, and effective sealing of the mechanical seal device is achieved.

Description

technical field [0001] The invention belongs to the technical field of sealing, and relates to a composite mechanical sealing device and an installation method thereof. Background technique [0002] At present, sealing devices are used for sealing between the floating plate and the tank wall of floating roof storage tanks. These sealing devices use primary sealing devices and secondary sealing devices. The primary sealing devices mainly use soft seals or mechanical seals. Sealing, soft sealing adopts elastic foam-filled sealing or liquid-filled sealing, the former is used most, and the application of mechanical sealing devices is greatly reduced due to the hidden danger of fire caused by lightning strikes. The primary sealing device is a key component to ensure the sealing of the floating disc. Both the soft seal and the mechanical seal are primary sealing devices, and there is a large oil-gas space between them and the secondary sealing device, and an explosion accident wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D88/46
Inventor 郎需庆
Owner CHINA PETROLEUM & CHEM CORP