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Stainless steel union for composite plastic-steel pipes and its connection method

A technology of stainless steel pipes and composite pipes, which is applied in the direction of pipes/pipe joints/fittings, pipe connection layout, mechanical equipment, etc. Large and other problems, to achieve the effect of reducing space occupation, high pressure bearing strength, and large passing flow

Inactive Publication Date: 2003-08-20
叶呈标
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After more than half a year of testing after applying for this patent, the applicant found that the pipeline connector produced by this technical scheme has the following technical difficulties that cannot be overcome: First, under the premise of ensuring that the volume is not larger than that of similar pipe connectors, The diameter of the inlet and outlet is much smaller than the inner diameter of the plastic-steel composite pipe, so the flow rate of the inlet and outlet of the pipeline connector cannot meet the requirements; the second is to ensure that the volume is not larger than the volume of similar pipeline connectors and the diameter of the inlet and outlet is equal to the plastic-steel composite pipe Under the premise of the inner diameter of the pipeline, the wall thickness of the pipeline connector is greatly thinned, and it cannot meet the pressure requirements of the pipeline; the third is that the pipeline connector made of plastic has a large body, and it is difficult The space occupied by the installation is large, and it is impossible to realize the wall-mounting operation and wall-mounting pipes in the project

Method used

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  • Stainless steel union for composite plastic-steel pipes and its connection method
  • Stainless steel union for composite plastic-steel pipes and its connection method
  • Stainless steel union for composite plastic-steel pipes and its connection method

Examples

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Effect test

Embodiment 1

[0014] Example 1: Refer to the attached figure 1 . Stainless steel pipe connector for plastic-steel composite pipes. The pipe connector 1 is made of stainless steel. The plastic-steel composite pipe connector 2 in the pipe connector 1 is in the shape of a hollow truncated cone and is located at the rear of the plastic-steel composite pipe connector 2. A threaded buckle 3 is made on it, and a stainless steel tube reducing nut 4 is screwed on the threaded buckle. The stainless steel pipeline connector is a three-way or a four-way or an elbow or an oblique-through pipeline connector and is cast by a precision casting process. For the sealing connection method, refer to the attached figure 2 . As mentioned above, after the inner cavity of the stainless steel card tube reducing nut is clamped with the flaring of the plastic-steel composite pipe, the internal connection thread in the stainless steel card tube reducing nut and the thread fastener on the connecting body of the stainless...

Embodiment 2

[0015] Example 2: Refer to the attached image 3 . Stainless steel pipe connectors for plastic-steel composite pipes. The left and right parts of the plastic-steel composite pipe connector 5 are hollow truncated cones, the middle part is annular and located on the stainless steel card pipe reducing nut 4 and the stainless steel card pipe reducing connector In 6, the stainless steel card tube reducing connector is provided with a thread on the outside, and the stainless steel card tube reducing nut is screwed to the card tube reducing connector. The plastic-steel composite pipe connecting body 5 and the stainless steel card tube reducing connecting body 6 are cast and processed into one body by a precision casting process. The airtight connection method "refer to the attached Figure 4 . As mentioned above, the ends of the left and right parts of the plastic-steel composite pipe connector located in the stainless steel pipe reducing nut and the stainless steel pipe reducing connecto...

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Abstract

The stainless steel union for composite plastic-steel pipes includes stainless steel body with screw with hollow circular truncated conic connecting parts and pipe clamping screw nuts of stainless screwed to the screw. The stainless steel union for composite plastic-steel pipes provides enough wall thickness, flow rate and pressure bearing, and makes pipeline installation convenient. Its line and plane sealing fire provides sufficient for preventing leakage. The present invention has high heat resistance, low temperature resistance, connection reliability, sealing performance, pressure resistance, etc.

Description

Technical field: [0001] The invention relates to a pipe fitting for sealing connection with a plastic-steel composite pipe, which is mainly used for the supply and discharge of fluid, and belongs to the field of pipe connection manufacturing. Background technique: [0002] All the applicant’s patent application No. 02129327.9, the name "plastic-steel composite pipe pipeline connector and sealing connection method", the pipeline connector plastic-steel composite pipe pipeline connector, it includes a pipe connector, the pipe connector consists of a connector, The threaded connector and the pipe connector are formed as a whole. The pipe connector has a truncated cone-shaped structure and a sealing groove is opened on the table surface of the round table. The sealing groove is inlaid with a sealing ring, and the tube reducing nut is screwed on the thread. Buckle the connecting body. The entire pipeline connection piece is made of plastic. After applying for this patent, the applican...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L47/04
Inventor 叶呈标
Owner 叶呈标
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