CN111712123B

CN111712123B - Isolation box and electromagnetic shielding pipeline thereof

Info

Publication number: CN111712123B
Application number: CN202010653857.9A
Authority: CN
Inventors: 袁双虎; 李玮; 邓茂森; 李莉; 刘宁; 魏玉春; 于金明
Original assignee: Shandong Cancer Hospital & Institute (shandong Cancer Hospital); Shandong University
Current assignee: Shandong Cancer Hospital & Institute (shandong Cancer Hospital); Shandong University
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2022-08-23
Anticipated expiration: 2040-07-08
Also published as: CN111712123A

Abstract

The invention provides an isolation box and an electromagnetic shielding pipeline thereof, wherein the isolation box comprises: box and case lid, the box is the cube structure, the top of box is located to the case lid the lateral wall of box is provided with the connector, installs the connecting pipe at the connector, the part outside that the connecting pipe stretches out the box is equipped with the external screw thread, the inboard of box and case lid all is provided with the inboard membrane, and the outside all is provided with the outside membrane, the external screw thread of connecting pipe has the screw cap but the spiro union of connector department has electromagnetic shield pipeline. By adopting the isolation box and the electromagnetic shielding pipeline thereof provided by the invention, the high voltage of the medical accelerator can be effectively isolated, and the influence of the high voltage on communication equipment is greatly reduced; meanwhile, the pipeline is soft in texture and convenient to install and use.

Description

Isolation box and electromagnetic shielding pipeline thereof

Technical Field

The invention belongs to the technical field of medical equipment, and particularly relates to an isolation box and an electromagnetic shielding pipeline thereof.

Background

The medical electron linear accelerator is a product combining high, fine and sharp technologies in medical instruments, is one of the highest technical content products in the field of medical instruments, is an accelerating device which accelerates electrons by utilizing a microwave electromagnetic field and has a linear motion track, and is a medical instrument for radiotherapy of tumors or other focuses of patients. The existing disadvantages of this device are as follows: when the medical linear accelerator is used, a voltage with a strong load is generated, and the strong voltage influences surrounding communication equipment, particularly communication with a host. Therefore, the design of an isolation device capable of reasonably and effectively isolating the radiation and the voltage of the accelerator is of great significance.

Disclosure of Invention

In order to solve at least one of the above technical problems, the invention adopts the technical scheme that an isolation box and an electromagnetic shielding pipeline thereof are provided, which can effectively isolate the high voltage of a medical accelerator, reduce the influence of the high voltage on surrounding communication equipment and improve the success rate of the operation.

In order to at least achieve one of the above purposes, the invention adopts the technical scheme that:

the invention provides an isolation box, comprising: box and case lid, the box is the cube structure, the top of box is located to the case lid the lateral wall of box is provided with the connector, installs the connecting pipe at the connector, the part outside that the box was stretched out to the connecting pipe is equipped with the external screw thread, the inboard of box and case lid all is provided with the inboard membrane, and the outside all is provided with the outside membrane, the external screw thread of connecting pipe has the screw cap, the material of box, case lid, connecting pipe, screw cap is the metal material.

Furthermore, the connecting ports are arranged on four side surfaces of the box body, the connecting ports are circular openings, and the connecting pipes are connected with the connecting ports in a sealing mode.

Further, the box is the metal material of thickness 2 mm.

Furthermore, the connecting pipe is a metal pipe body with the thickness of 1mm and the shape of a cylinder.

Furthermore, the case lid is square structure, and the case lid closes with the box sealing lid to sink 0.5 mm.

Furthermore, the structure of the outer membrane is a transparent rubber membrane, metal particles are doped in the middle of the transparent rubber membrane, the thickness of the transparent rubber membrane is 5mm, and the diameter of the metal particles is 0.5mm of iron small balls.

Further, the structure of inside membrane is two-layer structure, including first layer inside membrane and second layer inside membrane, the inboard membrane of first layer covers in the inboard of box, the second layer inside membrane covers on first layer inside membrane, and first layer inside membrane is the compound carbon aerogel of cellulose base, and second layer inside membrane is the rubber membrane, two-layer structure thickness is 1 mm.

The invention also provides an electromagnetic shielding pipeline which is used for being connected to the isolation box and comprises a cylindrical pipe body, a threaded end, an outer peripheral membrane and an inner peripheral membrane, wherein the threaded end is arranged at least one end of the cylindrical pipe body, an inner thread is arranged at the threaded end and is in threaded connection with an outer thread of the connecting pipe, the pipe body is made of cellulose-based composite carbon aerogel, and the thickness of the pipe body is 2 mm.

Further, the peripheral film is a rubber film, metal particles are doped in the middle of the rubber film, the rubber film is an opaque rubber film with the thickness of 5mm, and the metal particles are iron small balls with the diameter of 0.5 mm.

Further, the inner peripheral film is made of rubber.

Compared with the prior art, the isolation box and the electromagnetic shielding pipeline thereof have the beneficial effects that:

the isolation box provided by the invention can effectively isolate the high voltage of the medical accelerator, and greatly reduce the influence of the medical accelerator on communication equipment;

the electromagnetic shielding pipeline provided by the invention can effectively isolate voltage and reduce the interference of the voltage on the connection between communication equipment and a host; the pipeline is soft in texture and convenient to install and use.

In a word, the invention provides the isolation box and the electromagnetic shielding pipeline thereof, which have the advantages of simple structure, good isolation effect and convenience in installation and use, and have wide application prospect.

Drawings

FIG. 1 is a front view of an isolation container of the present invention;

FIG. 2 is a schematic view of a lid of the isolation box of the present invention;

fig. 3 is a front view of the electromagnetically shielded duct of the present invention;

fig. 4 is a side view of an electromagnetically shielded conduit according to the present invention.

The device comprises an outer membrane 1, a box 2, an inner membrane 3, a connecting pipe 4, an outer membrane 5, a pipe body 6, an inner membrane 7, a cavity 8 and a lead 9.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to specific examples. Note that the following described embodiments are illustrative only for explaining the present invention, and are not to be construed as limiting the present invention. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications.

In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Hereinafter, the isolation box and the electromagnetic shielding pipeline thereof provided by the present invention will be described in detail by specific embodiments:

as shown in fig. 1 to 4, the insulation box of the present invention comprises: the box body 2 is of a cubic metal structure, the box cover is arranged at the top of the box body 2, the box cover is hermetically covered with the box body 2 and sinks by 0.5mm, the thicknesses of the box body 2 and the box cover are both made of 2mm metal materials, the box cover is of a square structure, and when the box cover is used, main communication equipment is placed from the box cover; the connector sets up respectively in the front of box 2, on four sides of back, left surface and right flank, the connector is circular opening junction department seal installation has connecting pipe 4, connecting pipe 4 is 1 mm's metal body 6 for thickness, the outer wall that connecting pipe 4 stretches out 2 parts of box is equipped with the external screw thread, but the outside spiro union of connecting pipe 4 has the screw cap, when needing to connect the electromagnetic shield pipeline, opens the screw cap and connects the electromagnetic shield pipeline on connecting pipe 4, when connecting pipe 4 need not connect, uses the screw cap to seal it, the screw cap is the metal material.

According to the invention, the inner side of the box body 2 and the box cover are both provided with an inner side membrane 3, the outer side of the box body is both provided with an outer side membrane 1, the inner side membrane 3 is arranged on the inner wall of the box body 2, the inner side membrane 3 extends to a position which is half of the length of the connecting pipe 4 along the connecting pipe 4 at the connecting port, the outer side membrane 1 is arranged on the outer wall of the box body 2, and the outer side membrane 1 extends to a position which is half of the length of the connecting pipe 4 along the connecting pipe 4 at the connecting port.

According to the invention, the structure of the outer membrane 1 is a transparent rubber membrane, metal particles are doped in the middle of the transparent rubber membrane, in order to completely wrap the metal particles and avoid unnecessary waste, the thickness of the transparent rubber membrane is 5mm, the diameter of the metal particles is 0.5mm, the rubber membrane is made of an insulating material, static electricity on an isolation box can be well shielded, the metal particles with small diameters form a first layer of electrostatic shielding network, and high-strength voltage is isolated as much as possible.

The inner side film 3 structure is a two-layer structure and comprises a first layer inner side film and a second layer inner side film, wherein the first layer inner side film is covered on the inner wall of the box body 2, the second layer inner side film is covered on the first layer inner side film, the first layer inner side film is super-hydrophobic and highly-absorbing electromagnetic shielding effectiveness cellulose-based composite carbon aerogel with the thickness of 1mm, and the second layer inner side film is a rubber film with the thickness of 1 mm.

The cellulose-based composite carbon aerogel is a material with high electromagnetic shielding performance and high absorption performance, and is low in production cost. The cellulose-based composite carbon aerogel is a completely closed interlayer theoretically and is used as a third layer of the electromagnetic shielding of the isolation box, and the electromagnetic shielding efficiency of the cellulose-based composite carbon aerogel is 20.8-109.3 dB. Gel texture is soft, according to the size and the appropriate deformation of shape of communication equipment, can play fixed effect, the inboard membrane of second floor is 1 mm's of thickness rubber membrane, and this rubber membrane's effect is kept apart communication equipment and the compound carbon aerogel of cellulose base, forms a cavity, makes outside membrane 1, keeps apart the effect that box 2 and the compound carbon aerogel of cellulose base exert and keep apart, opens the case lid of shielded box during the use, puts into wherein communication equipment, selects suitable connector connecting wire 9, seals other connectors with the screw cap, avoids high voltage to influence communication equipment. The isolation efficiency of the whole isolation box is as follows:

SE＝R1+A1+R2+A2+L

wherein R1 is the field strength attenuation caused by the reflection of the outer film, A1 is the field strength attenuation caused by the eddy current effect of the outer film, R2 is the electromagnetic attenuation caused by the reflection of the rigid body of the isolation box to the electromagnetism, A2 is the electromagnetic attenuation caused by the eddy current effect in the isolation box, and L is the absorption of the cellulose-based composite carbon aerogel to the electromagnetism.

Where x is the electromagnetic shielding coefficient of the material, l is the thickness, K is the correction coefficient, and f is the frequency. A is the field strength attenuation due to the eddy current effect of the outer film, R is the electromagnetic attenuation due to reflection, and B is the attenuation due to material absorption. The electromagnetic shielding effectiveness of the steel plate with the thickness of 1mm is calculated to be 50-70 dB. The electromagnetic shielding effectiveness of the cellulose-based composite carbon aerogel with the thickness of 1mm is 80-90 dB.

The electromagnetic shielding pipeline is used for being connected to the isolation box and comprises a pipe body 6, a threaded end, an outer peripheral membrane 5 and an inner peripheral membrane 7, wherein the pipe body 6 is cylindrical, at least one end of the pipe body 6 is provided with the threaded end, the threaded end is provided with an inner thread, the inner thread is in threaded connection with an outer thread of the connecting pipe 4, the pipe body 6 is made of cellulose-based composite carbon aerogel, and the thickness of the pipe body 6 is 2 mm.

The outer peripheral film 5 is a rubber film, metal particles are doped in the middle of the rubber film, the rubber film is an opaque rubber film with the thickness of 5mm, the metal particles are rigid small balls with the diameter of 0.5mm, and the inner peripheral film 7 is made of rubber. The metal pellets with the diameter of 0.5mm form a first shielding network of electromagnetic shielding, and the cellulose-based composite carbon aerogel forms a second shielding network. The inner peripheral film 7 is made of rubber, a cavity 8 is formed between the conducting wire 9 in the electromagnetic shielding pipeline and the inner peripheral film 7, and the inner peripheral film 7 is used for isolating the conducting wire 9 from shielding materials and avoiding the transmission conducting wire 9 from being interfered. The outer peripheral film 5, the pipe wall material and the inner peripheral film 7 used for the electromagnetic shielding pipeline ensure that the electromagnetic shielding pipeline has the electromagnetic shielding function and proper deformation performance, and meet the actual requirements.

During the use, after the connector of good shielded cell of selection, with the internal thread spiro union of electromagnetic shield pipeline through the screw thread end on 4 external screw threads of connecting pipe of shielded cell, electromagnetic shield pipeline and 4 threaded connection of connecting pipe are in the same place, form inclosed space, provide the passageway of wire 9 transmission, electromagnetic shield pipeline screw thread end spiro union is behind connecting pipe 4 the position that outer peripheral membrane 5 extends to 4 half lengths of connecting pipe, inner peripheral membrane 7 extends to the position of 4 half lengths of connecting pipe. The extending positions of the outer membrane 1, the outer membrane 5 and the inner membrane 3 are abutted, so that the connecting pipe 4 is well shielded.

In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Claims

1. An insulation box, comprising: the box body is of a cubic structure, the box cover is arranged at the top of the box body in a covering manner, a connecting port is arranged on the side wall of the box body, a connecting pipe is mounted on the connecting port, external threads are arranged on the outer side of the part, extending out of the box body, of the connecting pipe, inner side films are arranged on the inner sides of the box body and the box cover, outer side films are arranged on the outer sides of the box body and the box cover, threaded caps are connected to the connecting pipe in an external threaded manner, and the box body, the box cover, the connecting pipe and the threaded caps are all made of metal materials;

the structure of the outer side membrane is a transparent rubber membrane, metal particles are doped in the middle of the transparent rubber membrane, the thickness of the transparent rubber membrane is 5mm, and the diameter of the metal particles is 0.5mm of iron small balls;

the structure of the inner side film is a two-layer structure and comprises a first layer inner side film and a second layer inner side film, the first layer inner side film is covered on the inner side of the box body, the second layer inner side film is covered on the first layer inner side film, the first layer inner side film is cellulose-based composite carbon aerogel, the second layer inner side film is a rubber film, and the thicknesses of the two layers of structures are both 1 mm;

the cellulose-based composite carbon aerogel is used for the third layer of the electromagnetic shielding of the isolation box, has the electromagnetic shielding effectiveness of 20.8-109.3dB, and properly deforms according to the size and the shape of communication equipment to play a role in fixing;

the inner side film of the second layer is a rubber film with the thickness of 1mm, and is used for isolating the communication equipment from the cellulose-based composite carbon aerogel to form a cavity, so that the outer side film, the isolation box body and the cellulose-based composite carbon aerogel play an isolating role;

open the case lid of shielded box during use, put into wherein with communication equipment, select suitable connector connecting wire, seal other connectors with the screw cap, avoid high voltage to influence communication equipment, make the isolation efficiency of whole shielded box reach following effect:

SE＝R1+A1+R2+A2+L

wherein, R1 is the field intensity attenuation caused by the reflection of the outer film, A1 is the field intensity attenuation caused by the eddy current effect of the outer film, R2 is the electromagnetic attenuation caused by the reflection of the rigid body of the isolation box to the electromagnetism, A2 is the electromagnetic attenuation caused by the eddy current effect in the isolation box, and L is the absorption of the cellulose-based composite carbon aerogel to the electromagnetism; in particular, the amount of the solvent to be used,

wherein x is the electromagnetic shielding coefficient of the material, l is the thickness, K is the correction coefficient, f is the frequency, a is the field strength attenuation caused by the eddy current effect of the outer membrane, R is the electromagnetic attenuation caused by reflection, and B is the attenuation caused by absorption of the material.

2. The insulation box according to claim 1, wherein the connection ports are provided on four sides of the box body, the connection ports are circular openings, and the connection pipes are hermetically connected with the connection ports.

3. An insulation box according to claim 2, wherein the box body is made of metal with a thickness of 2 mm.

4. An insulation box according to claim 3, wherein said connecting pipe is a metal pipe body having a thickness of 1mm and a cylindrical shape.

5. The insulation box of claim 4, wherein the box cover is a square structure, and the box cover and the box body are sealed and covered and sink by 0.5 mm.

6. An electromagnetic shielding pipeline, for connecting the isolation box of any one of claims 1-5, comprising a cylindrical pipe body, a threaded end, an outer circumferential membrane and an inner circumferential membrane, wherein the threaded end is provided with an internal thread at least one end of the cylindrical pipe body, the threaded end is provided with an internal thread, the internal thread is screwed with an external thread of the connecting pipe, the pipe body is made of cellulose-based composite carbon aerogel, and the thickness of the pipe body is 2 mm.

7. The electromagnetically shielded conduit according to claim 6, wherein the peripheral film is a rubber film, the rubber film is doped with metal particles, the rubber film is an opaque rubber film having a thickness of 5mm, and the metal particles are iron pellets having a diameter of 0.5 mm.

8. The conduit according to claim 7, wherein the inner circumferential membrane is made of rubber.