CN114784558B - Radio frequency connector with explosion-proof function and design method - Google Patents
Radio frequency connector with explosion-proof function and design method Download PDFInfo
- Publication number
- CN114784558B CN114784558B CN202210230750.2A CN202210230750A CN114784558B CN 114784558 B CN114784558 B CN 114784558B CN 202210230750 A CN202210230750 A CN 202210230750A CN 114784558 B CN114784558 B CN 114784558B
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- sleeve
- guide sleeve
- explosion
- outer guide
- sealing
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- 238000013461 design Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 79
- 239000003292 glue Substances 0.000 claims abstract description 20
- 238000003780 insertion Methods 0.000 claims abstract description 6
- 230000037431 insertion Effects 0.000 claims abstract description 6
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 238000003466 welding Methods 0.000 claims description 53
- 239000012212 insulator Substances 0.000 claims description 24
- 239000000565 sealant Substances 0.000 claims description 22
- 230000003287 optical effect Effects 0.000 claims description 19
- 238000004880 explosion Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 11
- 238000012360 testing method Methods 0.000 claims description 9
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 230000001629 suppression Effects 0.000 claims 6
- 239000004020 conductor Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000012945 sealing adhesive Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/533—Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
- H01R13/512—Bases; Cases composed of different pieces assembled by screw or screws
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/622—Screw-ring or screw-casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/73—Means for mounting coupling parts to apparatus or structures, e.g. to a wall
- H01R13/74—Means for mounting coupling parts in openings of a panel
- H01R13/748—Means for mounting coupling parts in openings of a panel using one or more screws
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
- H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/02—Connectors or connections adapted for particular applications for antennas
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Abstract
The invention relates to a radio frequency connector with an explosion-proof function and a design method, wherein a sleeve comprises an inner connecting part and an outer connecting part, one end of an outer guide sleeve is in threaded connection with an explosion-proof equipment shell, the other end of the outer guide sleeve is in threaded insertion in the inner connecting part, a sealing gasket is arranged in the inner connecting part and is abutted against the end part of the outer guide sleeve, one side of the inner connecting part, which is inserted in by the outer guide sleeve, is provided with a mounting head end penetrating through the sealing gasket, the head end of a cable assembly is mounted in the mounting head end, the rear end of the cable assembly extends into the explosion-proof equipment, the tail end of the cable assembly is provided with a module radio frequency plug, sealing glue is poured inside the outer guide sleeve, the outer connecting part of the sleeve is in threaded insertion in a fixed end, a sealing clamping ring is arranged in the fixed end, and one side of the sealing clamping ring is clamped in an end cavity opening of the outer connecting part of the sleeve. The invention can be applied to dangerous occasions needing explosion-proof safety, and is convenient to assemble and connect with the antenna of the wireless equipment.
Description
Technical Field
The invention relates to the technical field of connectors, in particular to a radio frequency connector with an explosion-proof function and a design method.
Background
The radio frequency connector is widely used between radio frequency devices and between wireless product devices and antennas, and the radio frequency connector in the prior art generally has no explosion-proof function, so that the radio frequency connector cannot be directly applied to places needing explosion protection, and a connecting part is required to be arranged in a non-explosion-proof area to complete connection or in an explosion-proof box body, so that the cost of installation and maintenance is increased, the cost of application is increased, and safety accidents are extremely easy to cause when the operation is improper.
Disclosure of Invention
The invention aims to provide a radio frequency connector with an explosion-proof function and a design method thereof, which can be applied to dangerous occasions needing explosion-proof safety, and are convenient to assemble and connect with a wireless device antenna.
The aim of the invention is realized by the following technical scheme:
the utility model provides a radio frequency connector with flame proof function, includes outer guide pin bushing, sleeve, fixed end, sealed clamping ring and cable subassembly, and wherein the sleeve includes internal connection portion and external connection portion, outer guide pin bushing one end and explosion-proof equipment casing threaded connection, the other end screw thread cartridge in the internal connection portion, just be equipped with the sealed pad in the internal connection portion with outer guide pin bushing tip offsets, outer guide pin bushing cartridge in one side of internal connection portion is equipped with the installation head end and passes the sealed pad, the cable subassembly head end install in the installation head end, the cable subassembly rear end stretches into in the explosion-proof equipment and the tail end is equipped with the module radio frequency plug, the inside watering of outer guide pin bushing has sealed glue, telescopic external connection portion screw thread cartridge in the fixed end be equipped with sealed clamping ring in the fixed end, just sealed clamping ring one side cartridge in telescopic external connection portion tip accent.
The cable assembly comprises a coaxial cable, a welding fixing piece and a welding contact pin, wherein one side of the welding fixing piece forms a light shaft tube part, the other side forms a threaded tube part, the coaxial cable is fixedly arranged in the light shaft tube part, the welding contact pin is fixedly arranged in the threaded tube part, the threaded tube part is in threaded connection with the mounting head end of the outer guide sleeve, and a cable core at the head end of the coaxial cable is fixedly connected with the welding contact pin through welding.
The welding fixture is characterized in that a fixed limiting protruding portion is arranged on the outer wall of the welding fixture and is arranged between the optical axis pipe portion and the threaded pipe portion, a sealant groove is formed in the outer guide sleeve, a mounting through hole penetrating through the mounting head end is formed in the bottom of the sealant groove, the fixed limiting protruding portion is propped against the bottom of the sealant groove, the optical axis pipe portion is arranged in the sealant groove, the threaded pipe portion is in threaded connection with the mounting through hole, a first insulator is fixedly arranged in the threaded pipe portion, a second insulator is fixedly arranged in the mounting head end of the outer guide sleeve, and one end of a welding pin is mounted on the second insulator, and the other end of the welding pin penetrates through the first insulator and is fixedly welded with a cable core of the coaxial cable head end.
The optical axis tube part is provided with a welding hole, one side of the threaded tube part, which is close to the optical axis tube part, is provided with an opening, and one side of the threaded tube part, which is far away from the optical axis tube part, is provided with an external thread which is in threaded connection with the installation through hole.
The outer wall of the outer guide sleeve is provided with a guide sleeve limiting protruding portion, the guide sleeve limiting protruding portion abuts against the outer wall of the explosion-proof equipment shell, and a sealing ring is arranged between the guide sleeve limiting protruding portion and the explosion-proof equipment shell.
The inner cavity of the inner connecting part of the sleeve forms a first limiting surface close to one side of the outer connecting part, and the sealing gasket is arranged between the outer guide sleeve and the first limiting surface.
The inner cavity of the outer connecting part of the sleeve is provided with a chamfer inclined plane near the cavity opening at one side of the sealing clamping ring, the outer edge of the end face of the sealing clamping ring abuts against the chamfer inclined plane, and an opening facing the clamping groove of the sleeve is arranged inside the sealing clamping ring.
When the antenna is connected, the antenna joint of the antenna sequentially passes through the fixed end, the sealing clamping ring, the sleeve and the sealing gasket and then is sleeved on the mounting head end of the outer guide sleeve, then the sleeve and the fixed end are screwed, and the sealing clamping ring extrudes towards one side of the sleeve through the fixed end to clamp and fix the antenna.
The inner cavity of the fixed end is far away from one side of the sleeve to form a second limiting surface, and one side of the sealing clamping ring far away from the sleeve is propped against the second limiting surface to limit.
A design method of a radio frequency connector with an explosion-proof function comprises the following steps:
step one: determining an explosion-proof mode, adopting a thread joint surface explosion-proof mode, and carrying out structural design to design the radio frequency connector structure as claimed in claim 1;
step two: determining the materials of the outer guide sleeve, the fixed end, the sealing gasket and the sealing clamping ring;
step three: determining the structural size of each thread joint surface;
step four: the outer guide sleeve, the fixed end, the cable assembly, the sealing gasket and the sealing clamping ring are processed and combined;
step five: pouring sealant in the outer guide sleeve, wherein the sealant is epoxy resin glue, and the hardness of the cured sealant is required to meet the requirement of Shore 80A;
step six: and (3) carrying out a pressure test on the whole, if the pressure test does not meet the requirement, adjusting the structural size of the threaded joint surface of the second material and the third material, and repeating the fourth to sixth steps until the whole pressure test meets the requirement.
The invention has the advantages and positive effects that:
1. the outer guide sleeve adopts an explosion-proof thread design, one end of the outer guide sleeve is in threaded connection with the shell of the explosion-proof equipment, the other end of the outer guide sleeve is in threaded connection with the sleeve, sealant is poured in the outer guide sleeve, and the sleeve and the fixed end are also in an explosion-proof thread connection design.
2. The invention can efficiently realize the installation, disassembly and maintenance of the explosion-proof equipment products, the radio frequency connector and the antenna, wherein the invention can directly connect the antenna joint after the sleeve and the fixed end are disassembled on the construction site, and then reinstallate the sleeve and the fixed end, thereby greatly improving the antenna installation efficiency, eliminating the need of redesigning a complex antenna installation device, simplifying the radio frequency connection in the explosion-proof equipment products, avoiding the need of using a patch cord for multiple switching, reducing the insertion loss, improving the signal stability and increasing the wireless transmission distance to a certain extent.
3. The cable assembly comprises a coaxial cable, a welding fixing piece and welding pins, wherein one side of the welding fixing piece is provided with an optical shaft tube part, the other side of the welding fixing piece is provided with a threaded tube part, insulators are arranged in the installation head ends of the threaded tube part and the outer guide sleeve to fix the welding pins so as to play an insulating role of inner conductors and outer conductors, the structural design of the welding fixing piece is convenient for assembling and connecting the coaxial cable, the welding pins and the insulators, the assembly efficiency is improved, a cable core at the front end of the coaxial cable is fixedly connected with the welding pins in a welding mode, and a module radio frequency plug is arranged at the rear end of the coaxial cable so as to be convenient for connecting the module radio frequency plug with a radio frequency module in explosion-proof equipment.
Drawings
Figure 1 is a schematic view of the structure of the present invention,
figure 2 is an enlarged schematic view at a in figure 1,
figure 3 is an exploded view of the invention of figure 1,
figure 4 is an enlarged schematic view at B in figure 3,
fig. 5 is a schematic view of the usage state of the present invention.
Wherein 1 is an outer guide sleeve, 101 is a mounting head end, 102 is a guide sleeve limit protruding part, 103 is a sealant groove, 2 is a sealing ring, 3 is a sealing gasket, 4 is a sleeve, 401 is an inner connecting part, 4011 is a first limit surface, 402 is an outer connecting part, 4021 is a chamfer inclined surface, 5 is a fixed end, 501 is a second limit surface, 6 is a sealing clamping ring, 601 is a clamping groove, 7 is a coaxial cable, 8 is a sealant, 9 is a welding fixing piece, 901 is an optical axis pipe part, 9011 is a welding hole, 902 is a fixing limit protruding part, 903 is a threaded pipe part, 9031 is an opening, 10 is a first insulator, 11 is a welding contact pin, 12 is a second insulator, 13 is an explosion-proof equipment shell, 14 is an antenna joint, 15 is a module radio frequency plug, and 16 is a radio frequency module.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 to 5, the invention comprises an outer guide sleeve 1, a sleeve 4, a fixed end 5, a sealing clamping ring 6 and a cable component, wherein the sleeve 4 comprises an inner connecting part 401 and an outer connecting part 402, one end of the outer guide sleeve 1 is in threaded connection with an explosion-proof equipment shell 13, the other end of the outer guide sleeve is in threaded insertion fit in the inner connecting part 401 of the sleeve 4, a sealing gasket 3 is arranged in the inner connecting part 401 and abuts against the end part of the outer guide sleeve 1, a mounting head end 101 is arranged in the middle of one side of the inner connecting part 401 and penetrates through the sealing gasket 3, the cable component head end is mounted in the mounting head end 101, as shown in fig. 5, the rear end of the cable component extends into the explosion-proof equipment, a module radio frequency plug 15 is arranged at the tail end of the cable component and is used for being connected with a radio frequency socket of a radio frequency module 16 arranged in the explosion-proof equipment, as shown in fig. 1, a sealing glue 8 is poured in the inner part of the outer guide sleeve 1, in the embodiment, the sealing glue 8 is epoxy sealing glue, the sealing gasket plays an explosion-proof function, meanwhile, the cable component is fixed at the front of the same time, the fixing end is also in the clamping ring 6 is mounted in the inner connecting part of the sleeve 4, as shown in the inner connecting part of the sleeve 4, and is in the sealing clamping ring 6 is mounted in the sealing clamping ring 6, and is mounted in the end part is mounted in the sealing clamping ring 6, and is in the sealing clamping end is mounted in the end part, and is connected with the end is in the sealing clamping ring, and is in 5, and is in the sealing clamping end is mounted in 5 and is in 5. When the invention is used, when the module radio frequency plug 15 is connected with the radio frequency module 16, as shown in fig. 5, the module radio frequency plug is used for transmitting radio frequency signals, the system needs to be connected with an antenna, at the moment, the antenna connector 14 of the antenna sequentially passes through the fixed end 5, the sealing clamping ring 6, the sleeve 4 and the sealing gasket 3 and then is sleeved on the mounting head end 101 of the outer guide sleeve 1, the antenna cable is connected with the cable assembly head end in the mounting head end 101, then the sleeve 4 and the fixed end 5 are screwed to realize fixation, wherein the outer guide sleeve 1 adopts an explosion-proof thread design, one end of the outer guide sleeve is in threaded connection with the explosion-proof equipment shell 13, the other end of the outer guide sleeve is in threaded connection with the sleeve 4, the sleeve 4 and the fixed end 5 also adopt an explosion-proof threaded connection design, in addition, the fixed end 5 presses the sealing clamping ring 6 towards the sleeve 4 side, after being assembled in place, the sealing clamping ring 6 can clamp the fixed antenna cable, and the explosion-proof length is ensured. According to the invention, the sleeve 4 and the fixed end 5 can be detached at a construction site and then directly connected with the antenna joint 14, and then the sleeve 4 and the fixed end 5 are reinstalled, so that the antenna installation efficiency can be greatly improved, and the problem that the patch cord is required to be additionally arranged on the wireless radio frequency module 16 caused by internal wiring of the explosion-proof equipment can be avoided. The module rf plug 15, the rf module 16, and the antenna connector 14 are all well known in the art.
As shown in fig. 1 to 4, the cable assembly includes a coaxial cable 7, a welding fixture 9 and a welding pin 11, wherein one side of the welding fixture 9 forms an optical axis pipe portion 901, the other side forms a threaded pipe portion 903, a fixing limiting protrusion 902 is disposed on an outer wall of the welding fixture 9 and is disposed between the optical axis pipe portion 901 and the threaded pipe portion 903, as shown in fig. 1 to 2, a sealant groove 103 for pouring sealant 8 is disposed inside the outer guide sleeve 1, a mounting through hole penetrating through the mounting head end 101 is formed in a bottom of the sealant groove 103, the fixing limiting protrusion 902 abuts against a bottom of the sealant groove 103, the optical axis pipe portion 901 is disposed in the sealant groove 103, the threaded pipe portion 903 is in threaded connection with the mounting through hole, a first insulator 10 is fixedly disposed in the threaded pipe portion 903 through interference fit, a second insulator 12 is fixedly disposed in the mounting head end 101 of the outer guide sleeve 1 through interference fit, one end of the welding pin 11 is mounted on the second insulator 12, the other end of the welding pin passes through the first insulator 7, and the coaxial cable passes through the optical axis pipe portion 901 and then is welded with the coaxial cable 11. The first insulator 10 insulates the inner welding pin 11 and the outer threaded pipe portion 903, the second insulator 12 insulates the inner welding pin 11 and the outer mounting head end 101, so that an inner conductor insulation effect and an outer conductor insulation effect are achieved, the first insulator 10 and the second insulator 12 ensure that the welding pin 11 is coaxially connected with a cable core of the coaxial cable 7 and an antenna cable, and when the welding pin 11 is connected with the coaxial cable, a pin in the antenna joint 14 is inserted into the second insulator 12 to be in contact with the welding pin 11, so that connection is achieved. In this embodiment, the first insulator 10 and the second insulator 12 are made of polytetrafluoroethylene.
As shown in fig. 4, a welding hole 9011 is formed in the optical axis tube portion 901, an opening 9031 is formed in a side, close to the optical axis tube portion 901, of the threaded tube portion 903, an external thread is formed in a side, far away from the optical axis tube portion 901, of the threaded tube portion 903, the threaded tube portion is in threaded connection with the mounting through hole, a braided shielding layer of the coaxial cable 7 and a welding fixing piece 9 are inserted into the welding hole 9011 through a welding gun to achieve welding connection, and the opening 9031 is convenient to install and adjust the first insulator 10 and the welding contact pin 11, and meanwhile the coaxial cable 7 and the welding contact pin 11 are also convenient to weld.
As shown in fig. 1, the outer wall of the outer guide sleeve 1 is sequentially provided with a first thread section, a guide sleeve limiting protruding portion 102 and a second thread section, and as shown in fig. 5, when the anti-explosion device is used, the guide sleeve limiting protruding portion 102 is propped against the outer wall of the anti-explosion device shell 13, one side of the outer guide sleeve 1 is in threaded connection with the anti-explosion device shell 13 through the first thread section, the other side of the outer guide sleeve 1 is in threaded connection with an inner connecting portion 401 of the sleeve 4 through the second thread section, and a sealing ring 2 is arranged between the guide sleeve limiting protruding portion 102 and the anti-explosion device shell 13. The first thread section and the second thread section are thread sections meeting the explosion-proof requirement.
As shown in fig. 1, a first cavity is disposed in the inner connecting portion 401 of the sleeve 4, the outer guide sleeve 1 is inserted into the first cavity, a first limiting surface 4011 is formed on one side of the first cavity, which is close to the outer connecting portion 402, and the sealing gasket 3 is disposed between the outer guide sleeve 1 and the first limiting surface 4011 to realize limiting.
As shown in fig. 1, a second cavity is disposed in the outer connection portion 402 of the sleeve 4 and is communicated with the first cavity, a chamfer bevel 4021 is disposed at an opening of the second cavity near one side of the sealing clamping ring 6, the outer edge of the end face of the sealing clamping ring 6 facing one side of the sleeve 4 abuts against the chamfer bevel 4021, a clamping groove 601 with an opening facing the sleeve 4 is disposed inside the sealing clamping ring 6, and when the fixing end 5 is screwed to the sleeve 4 to press the sealing clamping ring 6 to one side, the sealing clamping ring 6 is pressed by the chamfer bevel 4021 to close the clamping groove 601, so that an antenna cable is clamped and fixed.
As shown in fig. 1, a third cavity is disposed in the fixed end 5, and the outer connection portion 402 of the sleeve 4 is inserted into the third cavity, a second limiting surface 501 is formed on one side of the third cavity away from the sleeve 4, the sealing clamping ring 6 is located on one side of the third cavity away from the sleeve 4 and abuts against the second limiting surface 501 to limit, and a through hole for an antenna cable to pass through is disposed in the sealing clamping ring 6.
The working principle of the invention is as follows:
as shown in fig. 1 to 5, when the invention is used, the outer guide sleeve 1 adopts an explosion-proof thread design, one end of the outer guide sleeve 1 is in threaded connection with the explosion-proof equipment shell 13, the other end of the outer guide sleeve 1 is in threaded connection with the sleeve 4, the sleeve 4 and the fixed end 5 are also in explosion-proof threaded connection design, and the sealing adhesive 8 is poured inside the outer guide sleeve 1, so that the invention can meet the requirements of explosion-proof design standards as a whole, and can be applied to dangerous occasions needing explosion-proof safety.
The design method of the invention is as follows:
step one: the main structure of the designed radio frequency connector comprises an outer guide sleeve 1, a sleeve 4, a fixed end 5, a sealing clamping ring 6 and a cable component.
Step two: the materials of the outer guide sleeve 1, the sleeve 4, the fixed end 5, the sealing gasket 3 and the sealing clamping ring 6 are determined.
Step three: the structural dimensions of the various thread interfaces are determined.
Step four: the outer guide sleeve 1, the sleeve 4, the fixed end 5, the cable assembly, the sealing gasket 3 and the sealing clamping ring 6 are processed and combined.
Step five: the sealant 8 is poured into the outer guide sleeve 1, the sealant 8 is made of epoxy resin glue, AB type double-component glue is adopted, the glue is mixed and stirred according to the weight of 5:1, and is immediately poured into the sealant groove 103 in the outer guide sleeve 1 after being fully stirred, if the glue is used in a forbidden mode under the condition of curing, the glue is prevented from being in air holes to influence the performance, the glue is cured after being placed at the room temperature of 25 ℃ for 24 hours, or the glue is cured after being cured at the high temperature of 60 ℃ for 2-3 hours, the glue can be moved after being fully cured, and the hardness of the cured sealant 8 is required to meet the Shore 80A.
Step six: and (3) carrying out a pressure test on the whole body, wherein the pressure of 4000kPa is required to be ensured not to be destroyed, if the pressure test does not meet the requirement, adjusting the structural dimensions of the second material and the third thread joint surface, and repeating the steps four to six until the whole pressure test meets the requirement.
After the analysis of the design method, the materials of the outer guide sleeve 1, the sleeve 4 and the fixed end 5 are confirmed to be stainless steel or copper nickel plating materials, zinc alloy containing more than 80% of zinc and nonmetallic materials cannot be selected, so that the sealing gasket can be safely applied to explosive places, the sealing gasket 3 and the sealing clamping ring 6 are made of silicon rubber materials, the hardness is more than 60 Shore A, and the sealing and sufficient strength are ensured. The thread joint surfaces of the outer guide sleeve 1, the sleeve 4 and the fixed end 5 adopt 60-degree cone angle threads, the thread specification M20 pitch is 1.5, the thread length is ensured to be more than 12mm, the thread is ensured to be more than 8 buckles, the effective buckling number of the threads is ensured to be more than 6 under the condition of the influence of chamfering and tool withdrawal grooves, and the thread processing is ensured to meet the requirement of medium precision.
Claims (8)
1. The utility model provides a radio frequency connector with flame proof function which characterized in that: the anti-explosion device comprises an outer guide sleeve (1), a sleeve (4), a fixed end socket (5), a sealing clamping ring (6) and a cable assembly, wherein the sleeve (4) comprises an inner connecting part (401) and an outer connecting part (402), one end of the outer guide sleeve (1) is in threaded connection with an anti-explosion device shell (13), the other end of the outer guide sleeve is in threaded insertion fit in the inner connecting part (401), a sealing gasket (3) is arranged in the inner connecting part (401) and abuts against the end part of the outer guide sleeve (1), one side of the outer guide sleeve (1) is provided with a mounting head end (101) penetrating through the sealing gasket (3), the cable assembly head end is mounted in the mounting head end (101), the rear end of the cable assembly extends into the anti-explosion device, the tail end of the cable assembly is provided with a module radio frequency plug (15), sealing glue (8) is poured inside the outer connecting part (402) of the sleeve (4) is in threaded insertion fit in the fixed end socket (5), the sealing clamping ring (6) is arranged in the fixed end socket (5), and one side of the sealing clamping ring (6) is in the cavity end part (402);
the cable assembly comprises a coaxial cable (7), a welding fixing piece (9) and a welding pin (11), wherein a light shaft tube part (901) is formed on one side of the welding fixing piece (9), a threaded tube part (903) is formed on the other side of the welding fixing piece, the coaxial cable (7) is fixedly arranged in the light shaft tube part (901), the welding pin (11) is fixedly arranged in the threaded tube part (903), the threaded tube part (903) is in threaded connection with an installation head end (101) of the outer guide sleeve (1), and a head end cable core of the coaxial cable (7) is fixedly connected with the welding pin (11) in a welding mode;
the welding fixture is characterized in that a fixed limiting protruding portion (902) is arranged on the outer wall of the welding fixture (9) and is arranged between the optical axis pipe portion (901) and the threaded pipe portion (903), a sealing glue groove (103) is formed in the outer guide sleeve (1), a mounting through hole penetrating through the mounting head end (101) is formed in the bottom of the sealing glue groove (103), the fixed limiting protruding portion (902) abuts against the bottom of the sealing glue groove (103), the optical axis pipe portion (901) is arranged in the sealing glue groove (103), the threaded pipe portion (903) is in threaded connection with the mounting through hole, a first insulator (10) is fixedly arranged in the threaded pipe portion (903), a second insulator (12) is fixedly arranged in the mounting head end (101) of the outer guide sleeve (1), and one end of the welding plug pin (11) is mounted on the second insulator (12) while the other end of the welding plug pin penetrates through the first insulator (10) and the head end cable core of the coaxial cable (7) is fixedly welded.
2. The radio frequency connector with explosion suppression according to claim 1, wherein: be equipped with welding hole (9011) on optical axis pipe portion (901), screw thread pipe portion (903) are close to optical axis pipe portion (901) one side is equipped with opening (9031), screw thread pipe portion (903) are kept away from optical axis pipe portion (901) one side be equipped with the external screw thread with installation through-hole threaded connection.
3. The radio frequency connector with explosion suppression according to claim 1, wherein: the outer wall of the outer guide sleeve (1) is provided with a guide sleeve limiting protruding portion (102), the guide sleeve limiting protruding portion (102) abuts against the outer wall of the explosion-proof equipment shell (13), and a sealing ring (2) is arranged between the guide sleeve limiting protruding portion (102) and the explosion-proof equipment shell (13).
4. The radio frequency connector with explosion suppression according to claim 1, wherein: a first limiting surface (4011) is formed on one side, close to the outer connecting portion (402), of an inner cavity of an inner connecting portion (401) of the sleeve (4), and the sealing gasket (3) is arranged between the outer guide sleeve (1) and the first limiting surface (4011).
5. The radio frequency connector with explosion suppression according to claim 1, wherein: the inner cavity of the outer connecting part (402) of the sleeve (4) is provided with a chamfer inclined surface (4021) close to an coelent on one side of the sealing clamping ring (6), the outer edge of the end face of the sealing clamping ring (6) is propped against the chamfer inclined surface (4021), and a clamping groove (601) with an opening facing the sleeve (4) is formed in the sealing clamping ring (6).
6. The radio frequency connector with explosion suppression according to claim 5, wherein: when the antenna is connected, an antenna joint (14) of the antenna sequentially penetrates through the fixed end socket (5), the sealing clamping ring (6), the sleeve (4) and the sealing gasket (3) and then is sleeved on the mounting head end (101) of the outer guide sleeve (1), then the sleeve (4) and the fixed end socket (5) are screwed, and the sealing clamping ring (6) extrudes towards one side of the sleeve (4) through the fixed end socket (5) to clamp and fix the antenna.
7. The radio frequency connector with explosion suppression according to claim 1, wherein: the inner cavity of the fixed end head (5) is far away from one side of the sleeve (4) to form a second limiting surface (501), and one side of the sealing clamping ring (6) is far away from the sleeve (4) to abut against the second limiting surface (501) to limit.
8. A design method of a radio frequency connector with an explosion-proof function is characterized by comprising the following steps: the method comprises the following steps:
step one: determining an explosion-proof mode, adopting a thread joint surface explosion-proof mode, and carrying out structural design to design the radio frequency connector structure as claimed in claim 1;
step two: determining the materials of the outer guide sleeve (1), the sleeve (4), the fixed end (5), the sealing gasket (3) and the sealing clamping ring (6);
step three: determining the structural size of each thread joint surface;
step four: the outer guide sleeve (1), the sleeve (4), the fixed end (5), the cable component, the sealing gasket (3) and the sealing clamping ring (6) are processed and combined;
step five: pouring sealant (8) in the outer guide sleeve (1), wherein the sealant (8) is epoxy resin glue, and the hardness of the cured sealant (8) is required to meet the requirement of Shore 80A;
step six: and (3) carrying out a pressure test on the whole, if the pressure test does not meet the requirement, adjusting the structural size of the threaded joint surface of the second material and the third material, and repeating the fourth to sixth steps until the whole pressure test meets the requirement.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210230750.2A CN114784558B (en) | 2022-03-10 | 2022-03-10 | Radio frequency connector with explosion-proof function and design method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210230750.2A CN114784558B (en) | 2022-03-10 | 2022-03-10 | Radio frequency connector with explosion-proof function and design method |
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| Publication Number | Publication Date |
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| CN114784558A CN114784558A (en) | 2022-07-22 |
| CN114784558B true CN114784558B (en) | 2023-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210230750.2A Active CN114784558B (en) | 2022-03-10 | 2022-03-10 | Radio frequency connector with explosion-proof function and design method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117996536A (en) * | 2024-04-03 | 2024-05-07 | 国网山西省电力公司太原供电公司 | Portable transfer box for high-voltage test |
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| CN114784558A (en) | 2022-07-22 |
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