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Grinding repair device for sealing surface of safety valve

A sealing surface and safety valve technology, which is applied in grinding devices, grinding/polishing safety devices, seat surface grinders, etc. The effect of reducing grinding cost, improving grinding efficiency and low cost

Active Publication Date: 2019-05-07
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Manual grinding is low in cost and high in frequency of use, but time-consuming and labor-intensive; semi-automatic grinding uses hand-held grinding tools, and the valve body rotates. Although the work efficiency is improved, the processing quality of the valve plate and valve seat is greatly affected by human factors; fully automatic grinding machine higher operating costs
These limit the use of downhole safety valves for oil and gas wells that require high machining accuracy on the sealing surface

Method used

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  • Grinding repair device for sealing surface of safety valve
  • Grinding repair device for sealing surface of safety valve
  • Grinding repair device for sealing surface of safety valve

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Embodiment Construction

[0029] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0030] The technical content of the present invention will be described in detail below through specific embodiments.

[0031] figure 1 It is a schematic structural diagram of a grinding and repairing device for the sealing surface of a safety valve according to an embodiment of the present invention. figure 2 for figure 1 The left view schematic diagram of image 3 for figure 1 Axonometric schematic of the abrasive repair device shown. Such as figure 1 As shown, the grinding and repairing device for the sealing surface of the safety valve includes a fixing mechanism f...

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Abstract

The invention discloses a grinding repair device for a sealing surface of a safety valve and belongs to the technical field of manufacture of safety valves for oil-gas wells. The grinding repair device comprises a fixing mechanism for fixing a valve plate, wherein the fixing mechanism comprises an outer barrel and a spigot shaft arranged in the outer barrel in a penetrating manner; the spigot shaft is screwed on the outer barrel through threads; and a magnet for attracting the valve plate is connected to the end part of the spigot shaft. The novel grinding repair device provided by the embodiment of the invention is simple in structure and low in cost, and realizes automatic grinding, the grinding cost is lowered, and the grinding efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of manufacturing safety valves for oil and gas wells, in particular to a grinding and repairing device for the sealing surface of safety valves. Background technique [0002] Downhole safety valves for oil and gas wells are mainly used to control the flow of downhole crude oil. When a well kick occurs underground, the safety valve is automatically closed to prevent accidents. The valve plate and valve seat of the safety valve are the key components to ensure the sealing of the safety valve. At present, there are three main ways to repair the sealing surface between the valve plate and the valve seat of the safety valve, which are manual grinding, semi-automatic grinding and fully automatic grinding. Manual grinding is low in cost and high in frequency of use, but time-consuming and labor-intensive; semi-automatic grinding uses hand-held grinding tools, and the valve body rotates. Although the work efficien...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B15/04B24B37/00B24B55/00B24B41/06B24B37/27
Inventor 李京山程文佳董社霞高彦才李同同梁月松林波高梦娜王强
Owner CHINA NAT OFFSHORE OIL CORP
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