High-performance sound-proof pneumatic shielding vertical hinged door for MRI (magnetic resonance imaging) shielding chamber

Abstract

Disclosed is a high-performance sound-proof pneumatic shielding vertical hinged door for an MRI shielding chamber. The high-performance sound-proof pneumatic shielding vertical hinged door for the MRI shielding chamber is characterized by comprising a door leaf copper frame (7) and a door frame copper frame (8); a pneumatic shielding module is arranged between the door leaf copper frame (7) and the door frame copper frame (8) and is composed of a finger-type reed (9), an elastic lining stripe (10), a force transmission unit (11) and a micro air cylinder (14), wherein the force transmission unit (11) is in a tubular shape, the finger-type reed (9) is in contact with the elastic lining stripe (10) and in the shape of an end-to-end stripe and is fixed between the door frame copper frame (8) and the door leaf copper frame (7); the finger-type reed (9) is made of elastic conducting materials. The high-performance sound-proof pneumatic shielding vertical hinged door for the MRI shielding chamber is an ideal upgraded product of existing extrusion type copper profile sound-proof shielding doors, overcomes the deficiencies and shortcomings of existing vertical hinged doors and achieves novelty, creativity and practicality.

Description

Technical field [0001] The invention relates to the field of electromagnetic shielding, and is a high-performance flat-opening air pressure shielding soundproof door used in an MRI shielding room. Specifically, it is a flat door with super electromagnetic shielding effect and sound insulation that is as convenient as a room door. Background technique [0002] The MRI shielded room is a radio frequency shield suitable for permanent magnets and superconducting MRI equipment to prevent external electromagnetic fields from interfering with the normal operation of MRI scanners, and at the same time inhibit the leakage of magnetic fields generated by MRI from affecting the normal operation of external equipment. [0003] The gap leakage of the shielded room determines the shielding effectiveness. The function of the shielded soundproof door is to solve the leakage problem of the movable gap, and its performance greatly affects the effectiveness of the shielded room. The existing high-pe...

AI Technical Summary

Problems solved by technology

[0005] (1) The shielding structure is an extruded reed, that is, the movable gap between the door leaf and the door frame is shielded by a finger-shaped reed. The shielding effectiveness mainly depends on the degree of deformation of the reed. The greater the degree of deformation, the greater the extrusion force. The shorter the life, the harder it is to switch! Conversely, the less effort the switch has, the lower the shielding effectiveness will be! Can not meet the use requirements and customer demands

[0006] (2) The finger reed is in a state of stress and compression for a long time, the elasticity will decrease, and the contact pressure will drop significantly after plastic deformation. Generally, the effective life will not exceed 3 years

The decline in the quality of the shielding soundproof door leads to a decline in the shielding effectiveness of the shielding room, which will inevitably lead to a decrease in image resolution and blurring, which greatly affects the quality of use of magnetic resonance equipment. Users will misunderstand that the quality of magnetic resonance equipment has deteriorated, which is tangled and annoying. Affected the reputation and income of the hospital!

[0007] (3) High failure rate during use, such as: reed damage, door leaf deformation, hinge deformation, hard door opening and closing, decreased shielding efficiency / unstable, poor image quality, etc.

[0008] (4) The pressure of the finger reeds in the existing structure cannot be adjusted. To ensure a certain shielding effect, the reeds must be replaced, which will increase maintenance costs and affect the normal income of the hospital.

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