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Quick pipeline quick leakage stopper and processing and forming method thereof

A technology of plugging device and pipeline, applied in the direction of pipe elements, pipes/pipe joints/pipes, mechanical equipment, etc., can solve the problems of difficulty in centering the upper and lower sealing strips, weakening the side sealing force, and increasing the cost of sealing strips. Easy positioning, reduced rubber material consumption, ease of use and effective results

Inactive Publication Date: 2012-10-31
黄争鸣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two deficiencies in this sealing strip with a rectangular section of equal width. First, the side sealing of the leak stopper is completely dependent on the pressure of the upper and lower sealing strips. Therefore, the larger the width of the rectangular section, the stronger the sealing force of the side. Large, but increasing the width will inevitably increase the cost of the sealing strip and increase the width of the groove
In addition, the rectangular sealing strip sinks into the groove so that there is more room for movement along the width direction, which makes it difficult to align the upper and lower sealing strips when they are pressed against each other, further weakening the sealing force of the sides

Method used

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  • Quick pipeline quick leakage stopper and processing and forming method thereof
  • Quick pipeline quick leakage stopper and processing and forming method thereof
  • Quick pipeline quick leakage stopper and processing and forming method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Cement pipes are still one of the main pipes for water supply in many cities in my country. The connection between cement pipes and pipes mainly adopts the socket method. The outer surface of the tail end of the previous section of pipe is covered with a sealing ring and then inserted into the front end of the subsequent section of pipe. The sealing ring at the socket is the most likely to be damaged and leak. One of them, the leak stopper used for rapid plugging at this position is called the cement pipe socket type Huff joint.

[0046] According to the national standard of DN300 cement pipe socket joint, determine its basic external dimensions, and then according to the design experience, after enlarging a certain proportion, determine the internal dimensions of the cement pipe socket DN300 leak stopper shell.

[0047] The thickness of the side flange is determined according to the flange design specification of DN300, and the material performance data is obtained by ...

Embodiment 2

[0050] Also for the DN300 cement pipe socket plugging device, its shell is prepared by molding.

[0051] Based on the material performance data obtained by dividing the tensile properties of the molded glass fiber reinforced resin material by the safety factor, the shell size of the DN300 cement pipe socket plugging device is designed, and then the metal convex and concave molds are designed and processed. After the two molds are closed The mold cavity space is the shell structure size of the leak stopper, and electric heating tubes are respectively embedded in the metal convex and concave molds for heating the mold. The die is fixed on the base of a 1000-ton press, and the punch is fixed on the movable platen of the press, and the punch and the die are matched by moving down the platen of the press. First, after closing the convex and concave molds, heat up to make the temperature in the mold cavity reach 150°C. Then, move the convex mold up and put a sufficient amount of phe...

Embodiment 3

[0053] Also for the DN300 cement pipe socket plugging device, its shell is prepared by spray molding.

[0054] Based on the modulus and strength of the chopped fiber reinforced composite material, the shell size of the DN300 cement pipe socket leak stopper is designed, and the metal convex and concave molds are further designed and processed. The mold cavity space after the two molds are closed is the leak stopper The size of the shell structure, the feed port and the air outlet connected with the cavity are set at the appropriate part of the mold, and the outer cover of the metal plug is placed in the die, and the feed port of the cavity is connected with the screw extruder. The discharge port is connected, and a cooling water flow channel is arranged in the mold. Mix chopped glass fiber and nylon pellets at a weight ratio of not less than 20% (that is, the weight ratio of chopped fiber in the mixture is not lower than 20%), and then put them into the feeding bin of the screw...

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Abstract

The invention relates to a quick pipeline leakage stopper and a processing and forming method of the quick pipeline leakage stopper. A housing of the leakage stopper is manufactured through fiber reinforced resin by utilizing one of the methods of wet forming, resin transfer molding, vacuum forming, compression molding and jet molding; the cross section of a sealing strip in a rubber sealing component has the characteristics of being wide in upper part and narrow in lower part, wherein the wide side has a relatively large contact area during pressing two half housings in an opposite way, and therefore, relatively great rubbing sealing force is produced; the narrow side is beneficial for positioning the sealing strip in a flange surface at the side edge of the housing, as well as saving rubber materials. The quick pipeline leakage stopper is advantaged by integrating the advantages of the current cast iron leak stopper which has high strength, and the plastic leakage stopper which has light weight and corrosion resistance; and the quick pipeline leakage stopper has a wide application range, and achieves a relatively great sealing effect under the condition that the consumption of the rubber materials is reduced.

Description

technical field [0001] The invention relates to a rapid pipeline leak stopper and a processing and molding method for making the leak stopper by using fiber reinforced resin. Background technique [0002] Pipelines are closely related to human production and life. Almost every city has established a dotted water supply and sewage discharge pipeline system. Large and medium cities also have a complete gas / natural gas and heating pipeline system. In addition, most factories have their own industrial pipeline systems. It is suitable for conveying various liquid or gaseous media including corrosive media. [0003] Any piping system has the potential to leak during its operation. Especially once the urban water supply pipeline leaks, people always hope that the repair can be completed in the first time and the pipeline water supply will not be interrupted from beginning to end. Quick pipe leak stopper, also known as Huff joint, is used to quickly and permanently block the leak...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/172B29C70/48B29C70/36B29C70/30
Inventor 黄争鸣
Owner 黄争鸣
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