Fully-shielded anti-interference probe coil device

Abstract

The invention relates to the technical field of sensors, and discloses a fully-shielded anti-interference probe coil device which comprises a shell, a coil assembly, a supporting barrel, a plug, an annular framework, a heat insulation barrel, a first sealing ring, a threaded rod, a second sealing ring, a displacement pipeline, a connecting pipe and a displacement partition body. The supporting cylinder is arranged in the shell, the coil assembly can be fixed through the supporting cylinder, the cylindrical supporting cylinder is simple in structure, the two plugs are fixed to the two ends of the supporting cylinder respectively and close the openings in the ends of the supporting cylinder, the two ends of the supporting cylinder are plugged through the two plugs, the influence of electromagnetic interference can be reduced, and the service life of the coil assembly is prolonged. Meanwhile, through holes communicated with the interior of the supporting cylinder are formed in all the plugs, the fluorinated liquid is continuously injected into the supporting cylinder through the through holes in the plugs, heat can be taken away in the flowing-out process of the fluorinated liquid, then the heat transferred to the to-be-measured sample by the radio frequency coil is reduced, and meanwhile the pressure needed by measurement can be provided for the to-be-measured sample.

Description

Technical Field

[0001] The invention relates to the technical field of sensors, and in particular to a fully shielded anti-interference type probe coil device. Background Art

[0002] In the fields of sensor technology, electromagnetic interference suppression technology and electronic circuit design, the probe coil device is an important device and is widely used in various measurement and control systems.

[0003] The probe coil device is usually composed of a coil, a shielding cover and a supporting structure. The coil generates a magnetic field to measure the object under test. However, in practical applications, the probe coil device is often affected by electromagnetic interference, which will affect the accuracy and reliability of the measurement results.

[0004] Existing probe coil devices usually use shielding covers to suppress electromagnetic interference. The shielding covers are usually made of metal materials, such as copper-clad laminates, and reduce the impact of electromagnetic interference by shielding electromagnetic waves. In addition, existing probe coil devices usually use support structures to fix the coils and shielding covers, but such support structures are often complex and easily affected by external factors, such as vibration and impact. Summary of the invention

[0005] In view of this, the present invention provides a fully shielded anti-interference probe coil device to solve the problem that the existing support structure is often complex and easily affected by external factors, thereby affecting the stability and reliability of the probe coil device.

[0006] In a first aspect, the present invention provides a fully shielded anti-interference probe coil device, comprising:

[0007] A shell body having a cavity therein;

[0008] A coil assembly is disposed inside the cavity;

[0009] The two ends of the support cylinder respectively penetrate the opposite sides of the shell, and the coil assembly is sleeved on the outside of the support cylinder that is inside the shell; the support cylinder and the shell are sealed at the penetration point, and the support cylinder is suitable for placing the sample to be tested;

[0010] Two plugs are respectively fixed to the two ends of the support cylinder and close the end openings of the support cylinder. All the plugs are provided with through holes communicating with the interior of the support cylinder.

[0011] When in use, the sample to be tested is placed inside the supporting cylinder, and the coil assembly is sleeved on the outside of the supporting cylinder that is located inside the shell for testing the sample to be tested. By arranging the supporting cylinder inside the shell, the supporting cylinder can fix the coil assembly, and the cylindrical supporting cylinder has a simple structure. The two plugs are respectively fixed to the two ends of the supporting cylinder and close the end openings of the supporting cylinder. By setting two plugs to seal the two ends of the supporting cylinder, the influence of electromagnetic interference can be reduced. At the same time, all the plugs are provided with through holes connected to the inside of the supporting cylinder. Fluoride liquid is continuously injected into the inside of the supporting cylinder through the through holes on the plugs. The fluoride liquid can take away heat during the outflow process, thereby reducing the heat transferred to the sample to be tested by the radio frequency coil, and at the same time can provide the sample to be tested with the pressure required for measurement.

[0012] In an optional embodiment, the fully shielded anti-interference probe coil device also includes an annular skeleton, which is cylindrically sleeved on the outside of the supporting cylinder. A positioning groove is provided on the outside of the annular skeleton, and the coil assembly is placed in the positioning groove.

[0013] In an optional embodiment, the fully shielded anti-interference probe coil device further includes a heat-insulating cylinder, wherein the heat-insulating cylinder is sleeved between the supporting cylinder and the annular skeleton, and the annular skeleton and the heat-insulating cylinder are spaced apart.

[0014] By arranging a heat-insulating cylinder between the supporting cylinder and the annular frame, the heat-insulating cylinder can reduce the heat on the annular frame from being transferred to the supporting cylinder, that is, reduce the heat transferred from the RF coil to the sample to be tested, and avoid excessive heat transferred from the RF coil to the sample to be tested affecting the accuracy and reliability of the measurement results of the sample to be tested. And by arranging a spacing between the annular frame and the heat-insulating cylinder, the heat transfer between the two is reduced. Among them, the heat-insulating cylinder is made of polytetrafluoroethylene.

[0015] In an optional embodiment, the fully shielded anti-interference probe coil device further includes two first sealing rings, the two first sealing rings are respectively sleeved on the thermal insulation cylinder and the first sealing rings are fixed to the shell;

[0016] One end of the first sealing ring is inserted into the gap between the insulation tube and the shell in a stepped shape, and the annular skeleton abuts against the outer side surface of the stepped end of the first sealing ring to form a gap between the annular skeleton and the insulation tube.

[0017] By sleeved a first sealing ring between the heat insulating cylinder and the shell, a gap between the heat insulating cylinder and the shell can be avoided, thereby reducing external electromagnetic interference. Figure 5As shown, by setting the first sealing ring with a stepped end, and after the first sealing ring is installed between the insulation-free cylinder and the shell, the annular skeleton abuts against the outer side surface of the stepped end of the first sealing ring, thereby ensuring that a gap is formed between the annular skeleton and the insulation cylinder.

[0018] In an optional embodiment, the fully shielded anti-interference probe coil device further includes:

[0019] A plurality of threaded rods, wherein the plurality of threaded rods penetrate the housing and both ends of the threaded rods protrude from the housing surface; and two first sealing rings are disposed at both ends of all the threaded rods;

[0020] Two second sealing rings, which are respectively arranged at both ends of all the threaded rods and outside the first sealing rings;

[0021] A plurality of fasteners are fixed to the ends of the threaded rod to lock the second sealing ring and the first sealing ring.

[0022] In an optional embodiment, the first sealing ring, the second sealing ring, and the plug are all provided with beryllium copper ring grooves, and beryllium copper is placed in the beryllium copper ring grooves.

[0023] In an optional embodiment, the fully shielded anti-interference probe coil device also includes two displacement pipelines, which are located inside the support cylinder after passing through the plug, the second sealing ring and the first sealing ring in sequence, and a through cavity connected to the interior of the support cylinder is provided inside the displacement pipeline.

[0024] In an optional embodiment, a plug through cavity is provided in the plug, and the plug through cavity is communicated with the through cavity inside the supporting cylinder;

[0025] The fully shielded anti-interference probe coil device also includes a connecting pipe, which is communicated with the plug cavity.

[0026] In an optional embodiment, an annular groove is provided inside the first sealing ring, and two injection holes communicating with the annular groove are provided on the first sealing ring.

[0027] In an optional embodiment, the fully shielded anti-interference probe coil device further includes two displacement partition bodies, the displacement partition bodies are fixed to the ends of the displacement pipelines, and the displacement partition bodies are provided with through holes communicating with the displacement pipelines.

[0028] The present invention provides a fully shielded anti-interference type probe coil device, which has the following advantages:

[0029] 1. The fully shielded anti-interference probe coil device provided by the present invention includes a shell, a coil assembly, a supporting cylinder and two plugs. A cavity is provided inside the shell, and the coil assembly is arranged inside the cavity. Two ends of the supporting cylinder respectively penetrate the opposite sides of the shell, and the coil assembly is sleeved on the supporting cylinder and is located outside the inner part of the shell; the supporting cylinder and the shell are sealed at the penetration point, and the supporting cylinder is suitable for placing a sample to be tested; the two plugs are respectively fixed to the two ends of the supporting cylinder and close the end opening of the supporting cylinder, and all the plugs are provided with through holes connected to the inside of the supporting cylinder.

[0030] The fully shielded anti-interference probe coil device of this structure, when in use, places the sample to be tested inside the support cylinder, and the coil assembly is sleeved on the outside of the support cylinder in the inner part of the shell for testing the sample to be tested. By arranging the support cylinder inside the shell, the support cylinder can fix the coil assembly, and the cylindrical support cylinder has a simple structure. Two plugs are respectively fixed to the two ends of the support cylinder and close the end opening of the support cylinder. By arranging two plugs to block the two ends of the support cylinder, the influence of electromagnetic interference can be reduced. At the same time, all the plugs are provided with through holes connected to the inside of the support cylinder. Fluoride liquid is continuously injected into the inside of the support cylinder through the through holes on the plugs. The fluoride liquid can take away heat during the outflow process, thereby reducing the heat transferred to the sample to be tested by the radio frequency coil, and at the same time can provide the pressure required for measurement for the sample to be tested.

[0031] 2. The fully shielded anti-interference probe coil device provided by the present invention also includes an annular skeleton, which is cylindrically sleeved on the outside of the supporting cylinder. A positioning groove is provided on the outside of the annular skeleton, and the coil assembly is placed in the positioning groove.

[0032] The fully shielded anti-interference probe coil device of this structure has a plurality of positioning grooves on the surface of the annular frame. When in use, the positioning grooves on the surface of the annular frame are used to wind the radio frequency coil, thereby fixing and positioning the radio frequency coil. The annular frame is made of polytetrafluoroethylene.

[0033] 3. The fully shielded anti-interference probe coil device provided by the present invention further includes a heat-insulating tube, which is sleeved between the supporting tube and the annular frame, and the annular frame and the heat-insulating tube are spaced apart.

[0034] The fully shielded anti-interference probe coil device of this structure has a heat-insulating cylinder between the supporting cylinder and the annular frame. The heat-insulating cylinder can reduce the heat transfer from the annular frame to the supporting cylinder, that is, reduce the heat transferred from the RF coil to the sample to be tested, and avoid excessive heat transfer from the RF coil to the sample to be tested, which affects the accuracy and reliability of the measurement results of the sample to be tested. And by setting a spacing between the annular frame and the heat-insulating cylinder, the heat transfer between the two is reduced. Among them, the heat-insulating cylinder is made of polytetrafluoroethylene.

[0035] 4. The fully shielded anti-interference probe coil device provided by the present invention further includes two first sealing rings, which are respectively sleeved on the heat insulation tube and fixed to the shell;

[0036] One end of the first sealing ring is inserted into the gap between the insulation tube and the shell in a stepped shape, and the annular skeleton abuts against the outer side surface of the stepped end of the first sealing ring to form a gap between the annular skeleton and the insulation tube.

[0037] The fully shielded anti-interference probe coil device of this structure can avoid the existence of a gap between the heat-insulating cylinder and the shell by setting a first sealing ring between the heat-insulating cylinder and the shell, thereby reducing external electromagnetic interference. Figure 5 As shown, by setting the first sealing ring with a stepped end, and after the first sealing ring is installed between the insulation-free cylinder and the shell, the annular skeleton abuts against the outer side surface of the stepped end of the first sealing ring, thereby ensuring that a gap is formed between the annular skeleton and the insulation cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 It is a schematic structural view of a fully shielded anti-interference type probe coil device provided in an embodiment of the present invention;

[0040] Figure 2 It is a schematic diagram of the internal structure of a fully shielded anti-interference type probe coil device provided in an embodiment of the present invention;

[0041] Figure 3 It is a schematic structural diagram of a supporting cylinder, an annular frame and a heat-insulating cylinder in a fully shielded anti-interference type probe coil device provided in an embodiment of the present invention;

[0042] Figure 4 It is an overall cross-sectional view of a fully shielded anti-interference type probe coil device provided in an embodiment of the present invention;

[0043] Figure 5 It is a partial structural schematic diagram of the first sealing ring in the fully shielded anti-interference type probe coil device provided in an embodiment of the present invention.

[0044] Description of reference numerals:

[0045] 1- housing;

[0046] 2- Support cylinder;

[0047] 3- plug;

[0048] 4- Ring-shaped skeleton;

[0049] 5-Insulation cylinder;

[0050] 6- first sealing ring;

[0051] 7-threaded rod;

[0052] 8- second sealing ring;

[0053] 9-Displacement pipeline;

[0054] 10-connecting pipe;

[0055] 11-Displace the partition body. DETAILED DESCRIPTION

[0056] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0058] Example

[0059] The present embodiment provides a fully shielded anti-interference probe coil device, including a shell 1, a coil assembly, a support cylinder 2, a plug 3, an annular skeleton 4, an insulation cylinder 5, a first sealing ring 6, a threaded rod 7, a second sealing ring 8, a displacement pipeline 9, a connecting pipe 10 and a displacement partition body 11.

[0060] In this embodiment, a cavity is provided inside the shell 1, and the coil assembly is arranged inside the cavity. The two ends of the support cylinder 2 respectively penetrate the opposite sides of the shell 1, and the coil assembly is sleeved on the outside of the support cylinder 2 which is located inside the shell 1; the support cylinder 2 and the shell 1 are sealed at the penetration point, and the support cylinder 2 is suitable for placing the sample to be tested; two plugs 3 are respectively fixed to the two ends of the support cylinder 2 and close the end opening of the support cylinder 2, and all the plugs 3 are provided with through holes connected to the inside of the support cylinder 2.

[0061] When in use, the sample to be tested is placed inside the support cylinder 2, and the coil assembly is sleeved on the outside of the support cylinder 2 inside the shell 1 for testing the sample to be tested. By setting the support cylinder 2 inside the shell 1, the support cylinder 2 can fix the coil assembly, and the cylindrical support cylinder 2 has a simple structure. The two plugs 3 are respectively fixed to the two ends of the support cylinder 2 and close the end opening of the support cylinder 2. By setting two plugs 3 to block the two ends of the support cylinder 2, the influence of electromagnetic interference can be reduced. At the same time, all the plugs 3 are provided with through holes connected to the inside of the support cylinder 2. Fluoride liquid is continuously injected into the inside of the support cylinder 2 through the through holes on the plugs 3. The fluoride liquid can take away heat during the outflow process, thereby reducing the heat transferred by the radio frequency coil to the sample to be tested, and at the same time, it can provide the pressure required for measurement for the sample to be tested. In this embodiment, the shell 1 is composed of copper clad plates spliced ​​together, which can reduce the influence of electromagnetic interference, and the coil assembly adopts an existing radio frequency coil.

[0062] In this embodiment, the annular skeleton 4 is sleeved on the outside of the supporting cylinder 2 in a cylindrical shape, and a positioning groove is provided on the outside of the annular skeleton 4, and the coil assembly is placed in the positioning groove.

[0063] like Figure 2 and Figure 3 As shown, the surface of the annular skeleton 4 is provided with a plurality of positioning grooves. When in use, the positioning grooves on the surface of the annular skeleton 4 are used to wind the radio frequency coil, thereby fixing and positioning the radio frequency coil. The material of the annular skeleton 4 is polytetrafluoroethylene.

[0064] In this embodiment, the heat-insulating cylinder 5 is sleeved between the supporting cylinder 2 and the annular frame 4 , and the annular frame 4 and the heat-insulating cylinder 5 are spaced apart.

[0065] like Figure 3 and Figure 4As shown, by setting a heat-insulating cylinder 5 between the support cylinder 2 and the annular skeleton 4, the heat-insulating cylinder 5 can reduce the heat on the annular skeleton 4 from being transferred to the support cylinder 2, that is, reduce the heat transferred from the RF coil to the sample to be tested, and avoid excessive heat transferred from the RF coil to the sample to be tested affecting the accuracy and reliability of the measurement results of the sample to be tested. And by setting a spacing between the annular skeleton 4 and the heat-insulating cylinder 5, the heat transfer between the two is reduced. Among them, the heat-insulating cylinder 5 is made of polytetrafluoroethylene.

[0066] In this embodiment, there are two first sealing rings 6, which are respectively sleeved on the insulation tube 5 and fixed to the shell 1; one end of the first sealing ring 6 is inserted into the gap between the insulation tube 5 and the shell 1 in a stepped manner, and the annular skeleton 4 abuts against the outer side surface of the stepped end of the first sealing ring 6 to form a gap between the annular skeleton 4 and the insulation tube 5.

[0067] like Figure 2 and Figure 4 As shown, by sleeved with a first sealing ring 6 between the heat insulating cylinder 5 and the shell 1, a gap between the heat insulating cylinder 5 and the shell 1 can be avoided, thereby reducing external electromagnetic interference. Figure 5 As shown, by setting the first sealing ring 6 with a stepped end, and after the first sealing ring 6 is installed between the heat-insulating cylinder 5 and the housing 1, the annular skeleton 4 abuts against the outer side surface of the stepped end of the first sealing ring 6, thereby ensuring that a gap is formed between the annular skeleton 4 and the heat-insulating cylinder 5. Specifically, the first sealing ring 6 is made of 6061 aluminum alloy.

[0068] In this embodiment, the fully shielded anti-interference probe coil device further includes a plurality of threaded rods 7, two second sealing rings 8 and a plurality of fasteners. The plurality of threaded rods 7 penetrate the housing 1 and the two ends of the threaded rods 7 protrude from the surface of the housing 1; the two first sealing rings 6 are arranged at the two ends of all the threaded rods 7; the two second sealing rings 8 are respectively arranged at the two ends of all the threaded rods 7 and are located outside the first sealing rings 6; the fasteners are fixed to the ends of the threaded rods 7 to lock the second sealing rings 8 and the first sealing rings 6.

[0069] like Figure 2 and Figure 3 As shown, four threaded rods 7 are provided, and the four threaded rods 7 are respectively arranged inside the housing 1 and the two ends of the threaded rods 7 protrude from the surface of the housing 1. Four through holes are correspondingly arranged on the first sealing ring 6 and the second sealing ring 8. When installing, the first sealing ring 6 is first installed on the four threaded rods 7 through the through holes thereon and inserted between the insulation tube 5 and the housing 1, and then the second sealing ring 8 is installed on the four threaded rods 7 through the through holes thereon and abutted against the first sealing ring 6, and then fasteners are screwed on the ends of the four threaded rods 7 to tighten the first sealing ring 6 and the second sealing ring 8. The fasteners can be nuts.

[0070] The second sealing ring 8 is arranged outside the first sealing ring 6 , and the second sealing ring 8 is used to limit the position of the first sealing ring 6 by squeezing the first sealing ring 6 and fixing it through fasteners.

[0071] In this embodiment, beryllium copper ring grooves are provided on the first sealing ring 6 , the second sealing ring 8 , and the plug 3 , and beryllium copper is placed in the beryllium copper ring grooves.

[0072] By providing beryllium copper ring grooves on the first sealing ring 6, the second sealing ring 8, and the plug 3, one or more circles of beryllium copper are placed in the beryllium copper ring grooves, thereby isolating the signal and reducing external electromagnetic interference. Furthermore, in this embodiment, beryllium copper can be provided at the joints of any component in the fully shielded anti-interference probe coil device, and beryllium copper is filled in the gaps at the joints.

[0073] In this embodiment, there are two displacement pipelines 9 , which are located inside the support cylinder 2 after passing through the plug 3 , the second sealing ring 8 and the first sealing ring 6 in sequence. A through cavity communicating with the interior of the support cylinder 2 is provided inside the displacement pipeline 9 .

[0074] like Figure 1 and Figure 4 As shown, two displacement pipelines 9 are respectively arranged on both sides of the housing 1 and the ends are located inside the plug 3. The plug 3 is provided with a threaded through hole. The displacement pipeline 9 is fixed and connected with the threaded through hole inside the plug 3 through the threads at the ends. Figure 4 The position between the two plugs 3 shown is used to place the sample to be tested, and pressure oil is injected into the cavity between the two plugs 3 through the displacement pipeline 9, thereby providing the pressure required for testing the sample to be tested.

[0075] In this embodiment, a plug cavity is provided in the plug 3, and the plug cavity is communicated with the cavity inside the support cylinder 2. Figure 4 As shown, the plug cavity is connected to the internal threaded through hole of the plug 3. After the displacement pipeline 9 is fixed through the internal threaded through hole of the plug 3, the displacement pipeline 9 is inside the plug cavity. The fully shielded anti-interference probe coil device also includes a connecting pipe 10, which is connected to the plug cavity, that is, the connecting pipe 10 and the displacement pipeline 9 can both pass liquid into the support cylinder 2. The liquid can be pressure oil or fluorinated liquid.

[0076] In this embodiment, an annular groove is provided inside the first sealing ring 6, and two injection holes connected to the annular groove are provided on the first sealing ring 6. Liquid is injected into and discharged from the annular groove in the first sealing ring 6 through the two injection holes, so that the heat of the first sealing ring 6 can be dissipated.

[0077] In this embodiment, there are two displacement partition bodies 11, which are fixed to the ends of the displacement pipeline 9, and a through hole communicating with the displacement pipeline 9 is provided inside the displacement partition body 11. By providing the displacement partition body 11, the displacement partition body 11 is made of existing absorbing materials.

[0078] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A fully shielded anti-interference probe coil device, characterized in that: include: A housing (1) having a cavity therein; A coil assembly is disposed inside the cavity; The supporting cylinder (2) has two ends that penetrate through opposite sides of the shell (1), and the coil assembly is sleeved on the outside of the inner part of the supporting cylinder (2) located in the shell (1); the penetration point between the supporting cylinder (2) and the shell (1) is sealed, and the supporting cylinder (2) is suitable for placing a sample to be tested; Two plugs (3), the two plugs (3) are respectively fixed to the two ends of the support cylinder (2) and close the end openings of the support cylinder (2), and all the plugs (3) are provided with through holes communicating with the interior of the support cylinder (2).

2. The fully shielded anti-interference probe coil device according to claim 1, characterized in that: It also comprises an annular skeleton (4), which is sleeved on the outside of the supporting cylinder (2) in a cylindrical shape, and a positioning groove is provided on the outside of the annular skeleton (4), and the coil assembly is placed in the positioning groove.

3. The fully shielded anti-interference probe coil device according to claim 2, characterized in that: It also comprises a heat-insulating cylinder (5), wherein the heat-insulating cylinder (5) is sleeved between the supporting cylinder (2) and the annular skeleton (4), and the annular skeleton (4) and the heat-insulating cylinder (5) are spaced apart.

4. The fully shielded anti-interference probe coil device according to claim 3, characterized in that: It also comprises two first sealing rings (6), wherein the two first sealing rings (6) are respectively sleeved on the heat insulation cylinder (5) and the first sealing rings (6) are connected to the shell (1); One end of the first sealing ring (6) is inserted into the gap between the insulation tube (5) and the shell (1) in a stepped manner, and the annular skeleton (4) abuts against the outer side surface of the stepped end of the first sealing ring (6) to form a gap between the annular skeleton (4) and the insulation tube (5).

5. The fully shielded anti-interference probe coil device according to claim 4, characterized in that: Also includes: a plurality of threaded rods (7), wherein the plurality of threaded rods (7) penetrate the housing (1) and both ends of the threaded rods (7) protrude from the surface of the housing (1); and two first sealing rings (6) are provided at both ends of all the threaded rods (7); Two second sealing rings (8), the two second sealing rings (8) being respectively arranged at both ends of all the threaded rods (7) and being located outside the first sealing ring (6); A plurality of fasteners are fixed to the ends of the threaded rod (7) to lock the second sealing ring (8) and the first sealing ring (6).

6. The fully shielded anti-interference probe coil device according to claim 5, characterized in that: The first sealing ring (6), the second sealing ring (8) and the plug (3) are all provided with beryllium copper ring grooves, and beryllium copper is placed in the beryllium copper ring grooves.

7. The fully shielded anti-interference probe coil device according to claim 5, characterized in that: It also comprises two displacement pipelines (9), wherein the displacement pipelines (9) are arranged inside the support cylinder (2) after passing through the plug (3), the second sealing ring (8) and the first sealing ring (6) in sequence, and wherein a through cavity communicating with the interior of the support cylinder (2) is arranged inside the displacement pipeline (9).

8. The fully shielded anti-interference probe coil device according to claim 7, characterized in that: The plug (3) is provided with a plug cavity, and the plug cavity is communicated with the cavity inside the supporting cylinder (2); It also comprises a connecting pipe (10), wherein the connecting pipe (10) is in communication with the plug cavity.

9. The fully shielded anti-interference probe coil device according to claim 4, characterized in that: An annular groove is provided inside the first sealing ring (6), and two liquid injection holes communicating with the annular groove are provided on the first sealing ring (6).

10. The fully shielded anti-interference probe coil device according to claim 7, characterized in that: It also comprises two displacement partition bodies (11), wherein the displacement partition bodies (11) are fixed to the ends of the displacement pipeline (9), and a through hole communicating with the displacement pipeline (9) is provided inside the displacement partition bodies (11).

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