Low cost and convenient welding head for heat exchanger

A heat exchanger, low-cost technology, applied in the direction of pipes/pipe joints/fittings, non-removable pipe connections, pass-through components, etc., can solve the requirements of welders' care and experience are very high, difficult to control welding conditions, affect welding effect and other problems, to achieve the effect of low replacement cost, simple and ingenious structure, and good sealing performance

Pending Publication Date: 2018-06-01
JIANGYIN YALONG HEAT TRANSFER EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, stainless steel and copper are two different materials, and their melting points are different. The melting point of stainless steel is 1300 ° C, and the melting point of copper is 900 ° C. The two should be heated to the appropriate temperature before welding, so that the welding conditions can be controlled.

Method used

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  • Low cost and convenient welding head for heat exchanger
  • Low cost and convenient welding head for heat exchanger
  • Low cost and convenient welding head for heat exchanger

Examples

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Embodiment Construction

[0019] Such as Figure 1-Figure 4 As shown, the convenient welding joint for a low-cost heat exchanger includes a bottom buckle 1 whose bottom is fixed at the inlet or outlet of the heat exchanger end plate and a copper pipe joint 2 whose top is connected to a copper pipe. The bottom buckle 1 is provided with at least one pair of perforations 1.1. The bottom of the copper pipe joint 2 is inserted into the bottom buckle 1 and is sealed with the bottom of the bottom buckle 1 through an O-ring. The copper pipe joint 2 is thin The wall metal pipe is extruded and contains a copper layer at least on its top, and the bottom of the copper pipe joint 2 is provided with at least one first annular groove 2.1, and the O-ring is arranged in the first annular groove 2.1 Inside, the copper pipe joint 2 is also provided with at least one second annular groove 2.2, the position of the second annular groove 2.2 is in line with the paired perforation 1.1 on the bottom buckle 1 when the bottom of...

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PUM

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Abstract

The invention discloses a low cost and convenient welding head for a heat exchanger. The low cost and convenient welding head for the heat exchanger includes a copper tube joint, wherein the bottom portion of the copper tube joint is fixedly arranged on a bottom buckle at an inlet or an outlet of a heat exchanger end plate, and the top portion of the copper tube joint is connected with a copper tube. At least one pair of perforated holes are formed in the top end position of the bottom buckle. The copper tube joint and the top portion of the bottom buckle are locked and fixed by inserting bolts into the perforated holes at the top end position of the bottom buckle and a second ring groove in the copper tube joint. The low cost and convenient welding head for the heat exchanger is simple and ingenious in structure, and good in airtightness. When the airtightness of the copper tube joint is decreased after long time use, it is only necessary to take out the copper tube joint from the bottom buckle for replacing and then replace an O-shaped ring. The replacement is fast and the replacement cost is very low. The copper pipe joint is extruded to form by a thin wall metal tube, the production process is fast and the manufacturing cost is low. The top portion of the copper pipe joint is provided with a copper layer, so that the quick welding of the copper pipe joint and the copper tube can be realized, the welding is very easy, and ordinary welders can weld well.

Description

technical field [0001] The invention relates to a convenient welding joint for a low-cost heat exchanger. Background technique [0002] Between the existing heat exchanger and the rear-end copper pipe, a stainless steel joint end is installed on the plate, and then the end is directly welded to the copper pipe to fix it, because the welding place must bear at least 22KG pressure, Makes the quality requirements of the welding place very strict. However, stainless steel and copper are two different materials with different melting points. The melting point of stainless steel is 1300°C and that of copper is 900°C. The two should be heated to the appropriate temperature before welding, so that the welding conditions can be controlled. It is very difficult, and impurities will also affect the welding effect. The requirements for the carefulness and experience of the welder are very high, and even a good welder can only guarantee a success rate of about 90%. Therefore, the existi...

Claims

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Application Information

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IPC IPC(8): F16L13/02
CPCF16L13/0236
Inventor 庞澄龙
Owner JIANGYIN YALONG HEAT TRANSFER EQUIP CO LTD
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