The key to the success of closing the ventilation pipe connection is the successful installation of the ventilation pipe system. If the ventilation pipe connection is not qualified, the leakage of the pipe system occurs in the use process. Therefore, when closing the ventilation pipe connection, we must pay attention to the following matters.
1. For the section of rectangular straight pipe, whether it is connected with the same plate or combined with multiple plates, its surface shall be flat and the angle line shall be straight. Before assembly, the cutting powder, dust and sundries on the cutting surface of the plate shall be removed.
2. After the pipe section is assembled, the outer seam of the edge shall be cut into a 45 degree angle, and the shell surface of the plate shall be sealed with aluminum tape, and the width of each side shall not be less than 20 mm. Check and adjust perpendicularity and diagonal deviation with ruler and steel tape to meet the specification requirements.
3. After the arc-shaped or broken line surface of the pipe is cut and pressed, it is pre assembled with the plane plate and then coated with glue to ensure the geometry, size and appearance of the pipe fittings.
4. After connecting the assembly, place the pipe segment vertically until it is set before moving.
5. The adhesive for aluminum foil composite insulation pipeline shall be the special adhesive approved by the plate manufacturer. If the brand adhesive is purchased separately, the connection effect must be compared with the test, and it can only be used after the supervision, inspection and approval of the plate manufacturer.
6、 Before bonding, it is necessary to pre assemble, check whether all joints are suitable, then apply glue, control bonding time, season, temperature and bonding performance. Sample testing shall be carried out prior to batch processing to determine the best bonding time.
Finally, after the sealing connection of the ventilation pipe is completed, it is necessary to check the sealing connection of the ventilation pipe in detail to ensure that the sealing connection of the ventilation pipe is tight. The above is for you to share. We must pay attention to the above points in the connection of ventilation pipe joints, hoping to help you.