Hard sealing plane elastic gate plate pair

A hard seal and sealing surface technology, applied in sliding valves, engine components, mechanical equipment, etc., can solve problems such as imperfect product performance, risk of storage and transportation of hazardous chemicals, and delays in work, and expand the application of high temperature and high pressure resistance demand, avoid valve internal leakage and stuck accidents, and expand the effect of application fields

Pending Publication Date: 2018-02-23
朱志强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are still some defects in the pipeline plane gate valve technology used in the production, storage and transportation of hazardous chemicals. Statistical analysis found that: the rubber seal used in the left and right floating sealing seats of pipeline plane gate valves determines that it is not resistant to high temperature and Due to the complex and changeable medium environment in the pipeline process of the petrochemical industry, the sealing and wearing parts of some valves often fail to form internal leakage, and even the gate plate is broken due to the installation and coordination of the floating seal seat. The jamming causes more accidents, which leads to frequent maintenance, delays in work, time-consuming, affects production, and at the same time brings certain risks and hidden dangers to the storage, transportation and production of hazardous chemical media
From the analysis and general review of the hidden dangers of hazardous chemicals pipelines and storage tanks in today's petrochemical production sites, it is found that for the existing planar gate valves, the main reason for their frequent damage and accidents is the structural design of the product There are technical defects that highlight the imperfection of the product's performance

Method used

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  • Hard sealing plane elastic gate plate pair
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  • Hard sealing plane elastic gate plate pair

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Effect test

Embodiment 1

[0023] image 3 The fully open state of the present invention in practical application is shown.

[0024] refer to image 3 , the hard-sealed planar elastic gate pair of the present invention is assembled with the housing of the planar gate valve, and after the working position is assembled in place, the special tool for temporarily locking the gate tension seat 2 is removed, and the hollow core of the present invention is positioned The spring 11 in the shaft 4 expands to both sides, so that the gap between the sealing surface of the two gates 5 and the sealing surface of the annular sealing seat 16 in the outer plane gate valve housing is immediately eliminated and pressed together to maintain a stable thickness. This prevents the effective sealing surface from being impacted by the fluid medium when the medium flows through the medium channel 15 of the valve, thereby improving the service life of the planar gate valve.

Embodiment 2

[0026] Figure 4 It shows the fully closed state of the present invention in practical application.

[0027] refer to Figure 4 and combine image 3 , after the hard-sealed planar elastic gate pair of the present invention is connected with the valve screw rod, it is assembled together with the shell of the planar gate valve as shown in FIG. image 3 In the fully open state, the screw rod is welded to the positioning seat sleeve 10 of the present invention, so that the present invention is pushed down to the valve medium channel through the positioning seat sleeve 10 driven by external torque 15 vertical displacement as Figure 4 The channel is shown fully closed.

[0028] exist Figure 4 In the fully closed state shown, there are two cases of positive sealing pressure on the sealing surface:

[0029] One situation is that the pressure of the medium does not exceed the sum of the elastic forces of all the springs inside the invention. At this time, the pressing overlap b...

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PUM

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Abstract

The invention discloses a pair of hard-sealed planar elastic gates. Its components include two symmetrical gates. The outer sides of the two gates are hard sealing surfaces, and the inner sides of the two gates are respectively symmetrical. The position is provided with a hollow positioning shaft, and the outer diameter of the two hollow positioning shafts is jointly installed with the positioning seat sleeve through the rectangular key of the upper gate and the rectangular key of the lower gate, and the inside of the two hollow positioning shafts is jointly arranged Spring, the two gates are connected as a whole by correspondingly provided two upper spring pins, two middle spring pins and two lower spring pins. As for the tension seat of the gate, the lower part of the two gates 5 is concentrically provided with a medium channel. Its advantages are: it can be used in the process environment of high temperature and high pressure, effectively solve the conventional problems that have been prone to occur in the pipeline transportation process in the past, avoid possible valve internal leakage and stuck accidents, and at the same time ensure that the dynamic and static sealing surfaces are not strained, thereby Extend the service life of the gate valve.

Description

technical field [0001] The invention relates to the technical field of planar gate valves, more specifically, the invention relates to a hard-sealed planar gate pair capable of high temperature resistance and without vulnerable non-metallic parts. Background technique [0002] At present, there are still some defects in the technology of pipeline plane gate valves used in the production, storage and transportation of hazardous chemicals. Statistical analysis found that: the rubber seals used in the floating sealing seats of pipeline plane gate valves determine that they are not resistant to high temperature and Due to the complex and changeable medium environment in the pipeline process of the petrochemical industry, the sealing and wearing parts of some valves often fail to form internal leakage, and even the gate plate is broken due to the change of the installation and coordination of the floating seal seat. The jamming causes more accidents, which leads to frequent repai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K3/02F16K3/312F16K3/36
CPCF16K3/0218F16K3/312F16K3/36
Inventor 朱志强
Owner 朱志强
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