阅读说明：本技术 胀塞式管线漏点封堵装置 (Expansion plug type pipeline leakage point plugging device ) 是由 张全通 牛兴胜 冯得辉 刘洪俊 梁丽 于 2020-06-12 设计创作，主要内容包括：一种胀塞式管线漏点封堵装置。主要解决现有的带压封堵装置结构复杂、作业面平整度要求高、承压低、易二次泄漏的问题。其特征在于：所述冲头膨胀螺丝(1)下端为锥体,冲头膨胀螺丝(1)外部连接有橡胶胀塞(2),橡胶胀塞(2)上部设有弧形的盖板(3),冲头膨胀螺丝(1)上端连接有紧固螺母(4)。该胀塞式管线漏点封堵装置不需等待管线放空,作业面平整度要求不高,恢复生产后承压高,不易发生二次泄漏。(An expansion plug type pipeline leakage point plugging device. The problem of current area pressure plugging device structure complicacy, operation face roughness require high, the pressure-bearing is low, easy secondary leak is mainly solved. The method is characterized in that: the lower end of the punch expansion screw (1) is a cone, the outer part of the punch expansion screw (1) is connected with a rubber expansion plug (2), the upper part of the rubber expansion plug (2) is provided with an arc-shaped cover plate (3), and the upper end of the punch expansion screw (1) is connected with a fastening nut (4). The expansion plug type pipeline leakage point plugging device does not need to wait for emptying of a pipeline, the requirement on the flatness of an operation surface is not high, the bearing pressure is high after production recovery, and secondary leakage is not easy to occur.)

1. The utility model provides an bloated stopper formula pipeline leak source plugging device, includes drift expansion screw (1), its characterized in that: the lower end of the punch expansion screw (1) is a cone, the outer part of the punch expansion screw (1) is connected with a rubber expansion plug (2), the upper part of the rubber expansion plug (2) is provided with an arc-shaped cover plate (3), and the upper end of the punch expansion screw (1) is connected with a fastening nut (4).

2. The expanding plug type pipeline leak source plugging device according to claim 1, wherein: the rubber expansion plug (2) is bonded with the cover plate (3) into a whole.

3. The expanding plug type pipeline leakage point plugging device according to claim 2, wherein: the lower end of the punch expansion screw (1) is a cone, and the diameter of the upper main body of the cone is smaller than the major diameter of the cone.

Technical Field

The invention relates to the field of oil fields, in particular to an expansion plug type pipeline leakage point plugging device.

Background

In the oil field production, the pipeline is influenced by various factors and often generates the perforation phenomenon, and the leak source presses the pressure welding construction degree of difficulty to be big, therefore when profit pipeline mending leak welding, need stop production and wash the pipeline, reach safe standard rear and can be under construction, often meet moreover that the valve is not tight and have the residual pressure in the pipeline and can't empty the air, cause the condition that the construction delays. At present, the plugging devices with pressure are leakage point external clamping type plugs, the structure is complex, the cost is high, the operation time is long, the requirement on the flatness of an operation surface is high, the bearing pressure is low after production recovery, and secondary leakage is easy.

Disclosure of Invention

In order to overcome the defects of complex structure, high requirement on flatness of an operation surface, low pressure bearing and easiness in secondary leakage of the existing under-pressure plugging device, the invention provides the expansion plug type pipeline leakage point plugging device which does not need to wait for emptying of a pipeline, has low requirement on flatness of the operation surface, has high bearing pressure after recovery of production and is not easy to cause secondary leakage.

The technical scheme of the invention is as follows: the utility model provides an bloated stopper formula pipeline leak source plugging device, includes drift expansion screw, drift expansion screw lower extreme is the cone, and drift expansion screw external connection has the rubber bloated stopper, and rubber bloated stopper upper portion is equipped with curved apron, and drift expansion screw upper end is connected with fastening nut.

The rubber expansion plug and the cover plate are bonded into a whole.

The lower end of the punch expansion screw is a cone, and the diameter of the main body at the upper part of the cone is smaller than the major diameter of the cone.

The invention has the following beneficial effects: by adopting the scheme, irregular leak points on the pipeline are impacted into standard round holes through the cone at the lower end of the punch head expansion screw, then the standard round holes are plugged by the rubber expansion plug, and the punch head expansion screw is enabled to compress the rubber expansion plug through the fastening nut, so that the diameter of the expansion plug is increased to achieve the purpose of sealing. The plugging device can operate under pressure, does not need to wait for emptying of a pipeline, has low requirement on the flatness of an operation surface, has high bearing pressure after production recovery, and is not easy to cause secondary leakage.

Drawings

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

fig. 2 is a cross-sectional view of the present invention.

In the figure, 1-a punch head expansion screw, 2-a rubber expansion plug, 3-a cover plate and 4-a fastening nut.

Detailed Description

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

as shown in fig. 1 and 2, the expansion plug type pipeline leakage point plugging device comprises a punch head expansion screw 1, wherein the lower end of the punch head expansion screw 1 is a cone, the diameter of the upper main body of the cone is smaller than the major diameter of the cone, and a step is formed between the cone and the upper main body. The cone at the lower end of the punch head expansion screw 1 can impact irregular leak points into round holes with standard diameters. The outside threaded connection of 1 main part of drift inflation screw has rubber bloated stopper 2, and 2 upper portions of rubber bloated stopper are equipped with curved apron 3, because apron 3 is the arc, can laminate on the pipeline outer wall, play the function of separation blade. The cover plate 3 is also in threaded connection with the punch head expansion screw 1, and the rubber expansion plug 2 is bonded with the cover plate 3 into a whole. The upper end of the punch head expansion screw 1 is connected with a fastening nut 4.

When a leakage point of the pipeline is found, the punch head expansion screw 1 is aligned to the leakage point, the top of the punch head expansion screw 1 is hit, the leakage point under the impact of the cone is circular, and when the leakage point reaches a certain diameter, the rubber expansion plug 2 enters the impact hole to plug the leakage point. At the moment, the fastening nut 4 is screwed, the punch head expansion screw 1 is pulled to move upwards, the large-diameter end of the upper part of the cone extrudes the rubber expansion plug 2, the diameter of the rubber expansion plug is increased to achieve the purpose of plugging, and then the cover plate 3 is welded with the pipeline to complete plugging.

This plugging device is through field application, carries out the shutoff to the leak source of different pipe diameter pipelines respectively, and through the experiment, the shutoff effect reaches the standard, resumes production back, does not appear secondary 8 seepage.