Application scope of pressure vessel annealing furnace: mainly used for weld annealing of pressure vessel.

The shell of this series of pressure vessel annealing furnace is welded with steel plate and section steel, the bottom of furnace body is integrated with trolley light rail, the user does not need foundation installation, only need to be placed on the flat cement floor can be used.

Relative brick lining adopts full fiber structure, furnace energy saving 60%, adopt high quality long fiber blanket as raw material, using special equipment to make the round module, and in the process have a certain amount of compression, so as to guarantee the module in the building has been completed, each ceramic fiber expansion in different directions, make the whole of the crowded into each other without gap between modules, achieve good regenerative effect, and the product construction convenient and quick, can be directly fixed on the furnace shell plates of stainless steel anchor round nails. Compared with other products, it has the advantages of low thermal conductivity, low thermal capacity, excellent corrosion performance, excellent thermal stability, thermal shock resistance and thermal insulation, and the anchoring part is set on the cold side of the furnace, which improves the high-temperature resistance strength of the fiber.

The heating element is made of ribbon and spiral wound with high temperature resistance alloy wire, which is hung on the side of the furnace, the door of the furnace, the back wall and the trolley shelf brick respectively, and fixed with high aluminum porcelain nail, which is safe and simple.

The bottom plate of the steel casting furnace is equipped on the platform to bear the workpiece. In order to prevent the oxide skin generated after the workpiece heating falling into the gap between the furnace bottom plate and the heating element and causing damage to the heating element, the furnace bottom plate and the furnace body contact place adopts the insertion type contact. In order to ensure normal use, it is necessary to frequently purge the oxide skin under the bottom plate of the trolley furnace. Generally, purge the bottom plate of the furnace once a week. During the purge, lift the bottom plate of the furnace and purge the oxidized dander in the resistance wire groove with compressed air.

The furnace door device of the pressure vessel annealing furnace is composed of the furnace door, the furnace door lifting mechanism and the furnace door pressing device. The shell of furnace door is welded by section steel and plate into a firm frame structure, and is made of laminated refractory fiber pressing module, which requires good insulation performance and light weight. The lifting device of the furnace door adopts electric device, which is mainly composed of the furnace door frame, the furnace door lifting beam, reducer, sprocket, transmission shaft and bearing, etc. The lifting of the furnace door drives the lifting of the furnace door through the positive and negative transmission on the reducer. The furnace door lifting reducer is also equipped with brake device, which can effectively prevent the furnace door from displacement in the lifting process. Oven door clamp device adopts domestic advanced spring loaded compact structure, when need to increase the stove, the oven door automatically by the oven door lever will loosen the weight, and level up after removed from a distance, when the oven door fall in place, the oven door down to on the pulley to compaction, again by the spring of the elastic pressure closely through lever move the standard oven door seal state, this kind of structure of the compaction device on the oven door, no friction between the front cotton fiber surface and has good safety performance, USES mission long.

The trolley frame is welded with section steel, and its rigidity ensures no deformation under full load. Inner firebrick masonry, easy to impact parts and load-bearing parts with heavy brick masonry, enhance the lining structure strength, trolley traveling by self-propelled structure, driven by the reducer sprocket walking on the track. The trolley is sealed with automatic labyrinth structure and soft contact double seal. The trolley enters the furnace through the action of CAM and roller bevel, and is sealed after it rises automatically. When the trolley leaves, the sealing groove will automatically fall down. After filling up the sealing sand in the sealing groove, it is not necessary to add it frequently. When the trolley leaves, the lifting of the furnace door is electrically controlled, equipped with electromagnetic brake, which can prevent inertia from hitting the furnace body, and interlocking control, that is, after slightly opening the furnace door, automatically cut off the heating element, and restore the power supply of the trolley travelling mechanism. When the furnace door is closed in place, it will automatically cut off the power supply of the trolley travelling mechanism and restore the power supply of the heating element.

In order to shorten the cooling process time, the furnace top may be provided with an exhaust device for accelerating cooling. The device is turned off when heated and cooled to a certain temperature. The operation of opening, closing and opening is completed by the operator on the side of the furnace through manual mechanism or automatic control.