Autoclave safety structure: The kettle lid is made of a whole piece of 16MnR steel plate, the kettle lid is flanged, and the autoclave is a steel horizontal cylinder type device. The body flange is machined from 16Mn forging. The welded joints of the pressed parts are subjected to heat treatment and strict non-destructive testing according to relevant specifications. The hand-operated reducer is used for opening and closing, and the door is fast moving door structure. It can also be powered, pneumatically or hydraulically opened and closed according to the user. Equipped with a complete safety interlock protection device to avoid potential misuse, to ensure the safe operation of the autoclave and the safe production of operators. There are two types of open door and open type for the user to choose. The side opening type adopts a rotating arm type door opening structure. The rotation is flexible, the low position operation is simple and convenient to open; the upper open type adopts a lever type door opening mechanism, the lower end of the lever is connected with the kettle door, and the upper end is equipped with a weight device, the type is light and the space on the side of the kettle is small.
The autoclave sealing ring is a rubber sealing device in the boosting stage embedded in the flange sealing groove of the kettle body. It is a consumable part of the autoclave and is divided into two types. It is mainly used in the autoclave. "V" type. When the steam is supplied to the sealing tank through the elbow and the valve, the pressure is applied to the end surface of the sealing kettle lid. After reaching the rated pressure, the sealing ring is sealed by the steam pressure of the kettle body through the curved pipe.
Improve the autoclave insulation work to save energy
The insulation of the autoclave equipment is essential. In theory, in the autoclave curing process, both conduction heat transfer and radiation heat transfer occur, sometimes accompanied by convective heat transfer and phase change heat transfer. The insulation of the kettle body we made is mainly for conduction heat transfer and radiation heat transfer. This requires the use of cost-effective insulation materials. Generally, we use mineral wool or rock wool as insulation layer, and use polished aluminum plate or galvanized plate as protective layer. However, the insulation of many enterprises has not achieved the expected results. In fact, there are many defects that should be made up.
Insufficient thickness of the insulation layer is not scientific. According to the relevant national regulations, the thickness of the insulation layer of the autoclave should be at least 120mm, but in fact, few enterprises have achieved it, and the thickness of the insulation of the kettle body reinforcement ring is definitely insufficient. Insufficient thickness of the insulation layer, in addition to reducing the insulation effect, there is also the disadvantage of exposing the reinforcement ring of the kettle body. If the reinforcement ring of the kettle body is not enclosed in the insulation layer and the protective layer, not only the heat reinforcement ring of the kettle body is transmitted in a heat transfer manner. Heat dissipation, and, once it rains, the rainwater will penetrate into the insulation layer, thereby reducing the insulation effect. At the same time, the rainwater wets the kettle body to strengthen the ring, which increases the heat dissipation of the phase change heat transfer. The scientific method is to use 2 layers of 60mm mineral wool or rock wool to block the conduction heat transfer; the mineral wool or rock wool is superimposed to block the convective heat transfer of the insulation material gap; then polished aluminum plate or galvanized The board is made of a protective layer to block the radiation heat transfer of the kettle body (note that the deeper the color of the protective layer, the lower the light reflection effect, the lower the ability to block the radiation heat transfer); the construction should ensure that the kettle body reinforcement ring is all Wrapped in the protective layer, the polished aluminum or galvanized sheet should be folded and overlapped, and the upper sheet should be pressed against the lower sheet to ensure that the rainwater is poured into the block, and the phase change heat transfer and aerated concrete equipment is blocked.
Insulation material defects. In order to reduce the cost, some enterprises often use calcium silicate insulation blocks or aerated concrete waste blocks to build the insulation layer of the kettle body, and ignore the waterproof of the insulation layer. Although the calcium silicate thermal block or the aerated concrete waste block has better thermal insulation effect, the specific construction method is difficult to ensure the thermal insulation effect of the thermal insulation layer, and the thermal insulation mortar used in the thermal insulation construction itself also reduces the thermal insulation effect. . If the above practices have been adopted, the surface layer of the insulation material should be properly done to avoid cracking and falling off of the insulation layer; effective rain protection measures (such as building a canopy) should be taken to make up for the lack of material selection.
Insulation process defects. In the heat preservation process, there are generally the following defects: for the convenience of construction, the bracket and the hook are randomly welded on the kettle body; the protective layer of the heat preservation cannot be effectively waterproof; the kettle door is not insulated. According to the specification, it is strictly forbidden to weld other objects on the kettle body. Except for safety factors, any welded parts are expanding the heat dissipation surface of the kettle body. Therefore, the method of welding the bracket and the hook should be abandoned during the heat preservation construction, and at the same time, all parts should be insulated as much as possible.
The kettle body (or the kettle head) is not rainproof. Many companies often set the autoclave outside, but although the kettle body has good insulation, it is difficult to keep the valves and joints of the pipeline, especially the kettle head. This part becomes the main part of the autoclave heat loss. When it rains and snows and foggy weather, its heat loss will be even greater. Therefore, we should try our best to keep the kettle body rainproof, at least for the kettle head.
Recommended equipment: ground flip cutting machine, aerated concrete production line equipment
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