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Double-diameter spring type heat transfer pipe insert orifice fixing device

A technology for fixing devices and inserts, which is applied in the field of automatic rotary descaling devices for inserts in tubes of shell-and-tube heat exchange equipment, which can solve problems such as easy falling off, increased fluid medium resistance, and large nozzle area of ​​the fixing device, reaching the scope of application Wide, small resistance, occupying a small nozzle area effect

Active Publication Date: 2011-07-13
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many on-line automatic rotary descaling technologies for in-pipe inserts, there are still two major technical problems in the nozzle fixing device of the in-pipe plug-in: one is that the fixing device occupies too much area of ​​the nozzle, which reduces the area of ​​the nozzle and increases Second, the fixing device can only be installed at one end of the nozzle, and it is easy to fall off, which makes the application effect of the online automatic rotation descaling technology of the in-line plug-in in the actual production unsatisfactory. Main reasons for not being widely used

Method used

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  • Double-diameter spring type heat transfer pipe insert orifice fixing device
  • Double-diameter spring type heat transfer pipe insert orifice fixing device
  • Double-diameter spring type heat transfer pipe insert orifice fixing device

Examples

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Embodiment Construction

[0018] Such as figure 1 As shown, a double-diameter spring-type heat transfer tube insert nozzle fixing device, first insert the tube insert 7 into the heat exchange tube 8, and then insert it into the opening of the rotating shaft 5 and connect it firmly with bolts and nuts 6, and then insert the small-diameter end of the double-diameter spring 1 Part of it is firmly inserted into the nozzle of the heat exchange tube 8, so that the large diameter end of the double-diameter spring 1 is fixed outside the nozzle of the heat exchange tube 8, and then the spring seat 2, the axial bearing 3, and the lock nut 4 are installed in sequence, and finally the shaft It is enough to lock the bearing 3 and the rotating shaft 5 mutually. If this double-diameter spring-type heat transfer tube insert nozzle fixing device is used in a vertical shell and tube heat exchanger and the fluid medium flows from top to bottom, it only needs to be installed at the inlet end of the heat exchange tube 8. W...

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Abstract

The invention provides a double-diameter spring type heat transfer pipe insert orifice fixing device, which comprises a double-diameter spring, a spring seat, a rotating shaft, an axial bearing and a locking nut. The double-diameter spring type heat transfer insert orifice fixing device occupies a small orifice area, can be arranged at orifices of two ends simultaneously, and overcomes the shortcoming that the other like devices cause high resistance to fluids due to large occupied orifice areas and only can be arranged at the orifice of one end and easy to drop so as to be widely applicable to various vertical and horizontal shell-and-tube heat exchangers.

Description

technical field [0001] The invention relates to the field of an automatic rotating descaling device for an insert in a tube of a shell-and-tube heat exchange equipment. Background technique [0002] There are two types of descaling operations for shell-and-tube heat exchange equipment: parking descaling and online descaling. At present, most of them still use the method of parking descaling; online descaling generally inserts inserts into the heat exchange tubes, using the fluid medium in the tube The kinetic energy of the flow makes the inner tube rotate, so as to achieve the purpose of anti-scaling and descaling. Although there are many on-line automatic rotary descaling technologies for in-pipe inserts, there are still two major technical problems in the nozzle fixing device of the in-pipe plug-in: one is that the fixing device occupies too much area of ​​the nozzle, which reduces the area of ​​the nozzle and increases Second, the fixing device can only be installed at o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28G15/00
Inventor 江村
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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