Replacement device for long tube type electric heater Inner core
An electric heater and tube type technology, applied in the mechanical field, can solve the problems of affecting the insulation gap between the heating element and the metal shell, the heating element has no support, and the increase of spare parts repair cost, etc., to achieve simple structure, reduce part repair cost, low cost effect
Active Publication Date: 2015-06-24
SHANGHAI MEISHAN IRON & STEEL CO LTD
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Problems solved by technology
[0003] Due to the requirements of the production process, after working for a long time, the tubular electric heater often trips or burns out. Due to the long inner body of the electric heater and the high position on the annealing furnace, when it is pulled out for inspection or replacement, it is difficult to push and pull The refractory plate is often damaged, resulting in no support for the heating element, and also affecting the insulation gap between the charged heating element and the metal shell, which may easily cause short-circuit tripping; after the refractory plate is damaged, the electric heater must be replaced when it is repaired. The heating element can only be replaced when it is disassembled, which increases the repair cost of spare parts
[0004] There is no replacement device for the inner core of the oblong tubular electric heater in the prior art, therefore, there is an urgent need for a device to solve the above technical problems
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[0024] In order to deepen the understanding of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings.
[0025] figure 1 It is a diagram of the internal structure of the tubular heater. It can be seen that the inner core 2 of the heater is composed of a plurality of circular refractory plates 3 evenly inserted into the heating element 21, and the heating element 21 is welded in series at the end to form a whole. And the terminal rod 5 is led to the open end of the round pipe, and a plurality of circular refractory discs 3 are fixed on the cover plate 6 at the open end of the round pipe by penetrating two fixing rods 4 bolts.
[0026] figure 2 — Figure 5 It is a schematic diagram of the specific structure of the replacement device, an oblong tubular electric heater inner core replacement device, the replacement device includes a crescent-shaped plate 70, and movable connecting rods arranged on both sid...
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The invention relates to a replacement device for a long tube type electric heater inner core. The replacement device is characterized by comprising a crescent moon shaped plate and moving connection rods arranged on two sides of the inner arc surface of the crescent moon shaped plate and further comprising bearings, a box and a moving mechanism. The bearings are arranged on two sides of the outer arc surface of the crescent moon shaped plate, the box and the moving mechanism are arranged at the bottom of the crescent moon shaped plate, the moving connection rods are arranged on two sides of the inner arc surface of the crescent moon shaped plate and comprise first moving connection rods and second moving connection rods, and the bearings are welded to the head and the tail of a crescent moon shaped plate body through a fixing seat. Compared with the prior art, the replacement device has the advantages that the crescent moon shaped space formed by a heater tube body and a heater inner core is fully utilized to perform design, and damage to heater body parts caused by directly pushing and pulling the heater inner core is avoided; the replacement device is small in size, simple in structure, low in cost and easy to operate.
Description
technical field [0001] The invention relates to a replacement device, in particular to a replacement device for the inner core of an oblong tubular electric heater installed horizontally and fixedly, and belongs to the field of mechanical technology. Background technique [0002] In the TDRS section of the annealing furnace of the hot-dip galvanizing and hot-dip galvanizing units in the cold rolling plant, 9 long round tube electric heaters are installed horizontally. The sealed tail end of the round tube electric heater shell and the tube body are placed horizontally on the support in the furnace. The open end of the round tube is fixed on the outer wall of the annealing furnace through flanges and gasket bolts. The heating element is evenly inserted into the shaped refractory plate and fixed. The heating element is welded in series at the end to form a whole. The connection is fixed to the cover plate at the open end of the round pipe. [0003] Due to the requirements o...
Claims
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IPC IPC(8): B25B27/00
CPCB25B27/00
Inventor 李明王芳李彦喆
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD