Device and method for sintering pipe plate of fluoroplastic heat-exchangerp
A heat exchanger tube and sintering device technology, which is applied in the field of fluoroplastic heat exchangers for chemical industry, can solve the problems of shallow welding depth, low connection strength, poor sealing, etc., to solve the problems of easy leakage, avoid pollution, and improve sealing Effect
Active Publication Date: 2012-09-26
四达氟塑股份有限公司
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Problems solved by technology
[0004] The present invention mainly provides a tube-sheet sintering device and method of a fluoroplastic heat exchanger with high tube-sheet connection strength and good sealing performance, which solves the welding performance between the fluoroplastic tube bundle and the fluoroplastic plate existing in the prior art Poor, shallow welding depth, low connection strength, leading to technical problems such as high leakage rate of tube sheet after welding
[0005] The present invention also provides a fluorine plastic heat exchanger tube plate sintering device and method with small tube plate deformation, which solves the serious deformation of the fluoroplastic plate after the tube plate is welded in the prior art, poor sealing after installation, and easy Technical issues such as polluting electronic chemicals
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[0028] Such as figure 1 As shown, a fluoroplastic heat exchanger tube-sheet sintering device of the present invention includes a sintering furnace 1, and an inlet 3 of a fluoroplastic heat exchanger tube-sheet assembly 2 is opened at the bottom of the sintering furnace 1, as figure 2 As shown, an expansion limiting ring 4 is coaxially installed in the sintering furnace 1 corresponding to the inner side of the inlet 3, and a deformation limiting plate 6 is placed in parallel on the upper surface of the expansion limiting ring 4, and the deformation limiting plate 6 is annular. An annular positioning plate 7 is placed in parallel on the lower surface of the expansion limiting ring 4, and the annular positioning plate 7 extends horizontally to the outside of the fluoroplastic tube bundle 22, and an annular heat insulating pad 10 is placed flat on the outer surface of the annular positioning plate 7, and the expansion limiting ring 4 clamped between the deformation limiting plat...
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The invention discloses a fluoroplastic heat-exchanger used in chemical industries and provides a device and a method for sintering a pipe plate of a fluoroplastic heat-exchanger, wherein the pipe plate is high in connecting strength, and the sealing performance is good, thereby solving the technical problems of high leakage rate of fused pipe plates due to poor fusing property between fluoroplastic pipe bundle and fluoroplastic plate, low fusing depth and low connecting strength. When a fluoroplastic plate is fused with a fluoroplastic pipe bundle, an anti-expanding pin is arranged in the fluoroplastic pipe bundle, and an expansion-limiting ring is sleeved outside the fluoroplastic plate; and then, the fluoroplastic pipe bundle and the fluoroplastic plate are placed in a fusing furnace to heat to be over the temperature of the fusing point; after the temperature of the fluoroplastic rises, the expansion-limiting ring and the anti-expanding pin produce pressure between the fluoroplastic plate and the fluoroplastic pipe bundle so as to enable the outer side of the fluoroplastic pipe bundle fuse adequately with the corresponding inner side of the fluoroplastic plate.
Description
technical field [0001] The invention relates to a fluoroplastic heat exchanger for chemical industry, in particular to a tube-sheet sintering device and method for a fluoroplastic heat exchanger with high connection strength and good sealing performance. Background technique [0002] Fluoroplastic heat exchangers are formed by welding tube bundles composed of many small-diameter thin-walled PTFE heat transfer tubes and PTFE tube sheets, but due to poor welding performance between PTFE, the fusion strength between tube bundles and tube sheets is low. , the welding depth is shallow, resulting in a high leakage rate after welding, and for leaking fluoroplastic heat exchangers, only PTFE pins can be used for rework to plug the leakage, which is not only time-consuming and laborious, but also has poor plugging effect. Fluoroplastic heat exchangers There are still great potential safety hazards in the use process. In order to improve the connection strength of the tube sheets, pe...
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IPC IPC(8): B29C65/02B29L31/18
Inventor 何正纲顾秋林
Owner 四达氟塑股份有限公司