Flameproof photoelectric interface

Abstract

The application discloses a flameproof photoelectric interface and belongs to the field of photoelectric cables. The flameproof photoelectric interface comprises a socket shell and a plug shell. The socket shell is connected to the plug shell through screws and spring washers. The socket shell is internally provided with a socket optical interface assembly. One end of the socket optical interface assembly is electrically connected to an optical fiber in equipment. The other end of the socket optical interface assembly is electrically connected to a plug optical interface assembly. The plug optical interface assembly is installed in the plug shell. The other end of the plug optical interface assembly is electrically connected to an optical fiber in a photoelectric cable. The socket shell is internally further provided with a socket electrical interface assembly. The socket electrical interface assembly is electrically connected to a plug electrical interface assembly. The plug electrical interface assembly is arranged in the plug shell. The application can realize the quick connection of a mine-used photoelectric composite cable and equipment, has high precision and explosion prevention, saves space, is convenient and fast to operate, and improves work efficiency.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of photoelectric technology, relates to the field of explosion-proof in coal mine, and particularly relates to an explosion-proof photoelectric interface. BACKGROUND

[0002] At present, optical cables are needed for data transmission in coal mine, but the complex environment in the mine is easy to cause the optical cable to break. The optical fiber is effectively protected after being added to the mine cable, and a mine optical and electrical composite cable is formed. However, when the composite cable is connected with the equipment, a large space is occupied, it is not safe enough, and it cannot guarantee to adapt to the complex and dangerous environment in the mine. The existing mine explosion-proof cable connector cannot perform optical fiber transmission, and the current technology cannot meet the interface structure of a safe and effective explosion-proof optical and electrical composite cable. SUMMARY

[0003] In view of the above problems in the prior art, the present application provides an explosion-proof photoelectric interface to solve the problems that the prior art is not safe enough when performing optical fiber transmission and cannot effectively prevent explosion.

[0004] In order to solve the above technical problems, the application adopts the following technical scheme: a flameproof photoelectric interface is disclosed, which comprises a socket shell and a plug shell, the socket shell is detachably connected with the plug shell, a socket optical interface assembly is arranged inside the socket shell, one end of the socket optical interface assembly is electrically connected with an optical fiber in an equipment, the other end of the socket optical interface assembly is electrically connected with a plug optical interface assembly, the plug optical interface assembly is installed inside the plug shell, and the other end of the plug optical interface assembly is electrically connected with an optical fiber in an optical cable; a socket electrical interface assembly is further arranged inside the socket shell, the socket electrical interface assembly is electrically connected with a plug electrical interface assembly, and the plug electrical interface assembly is arranged inside the plug shell; the socket optical interface assembly and the socket electrical interface assembly are externally filled with a socket core filling body, the socket optical interface assembly, the socket electrical interface assembly and the socket core filling body are injection molded together, and are clamped on the socket shell through a clamping ring; the socket optical interface assembly comprises a copper shell, the copper shell is wrapped by the socket core filling body, the socket core filling body and the copper shell are injection molded into an integrated structure, the plug optical interface assembly comprises a copper shell, the copper shell is wrapped by a plug core filling body, the plug core filling body and the copper shell are injection molded into an integrated structure, the copper shell of the socket optical interface assembly and the copper shell of the plug optical interface assembly are provided with concave-convex structures on inner and outer surfaces, the socket core filling body and the plug core filling body are made of flame-retardant plastic material, the optical cable comprises a photoelectric plug, the photoelectric plug is arranged at one end of the optical cable close to the plug shell, a connecting pipe is installed at the end of the plug shell away from the socket shell, the photoelectric plug is inserted into the connecting pipe, an explosion-proof surface is formed between the outer edge of the photoelectric plug and the connecting pipe, the overall structure realizes photoelectric transmission while having the explosion-proof function, the flame-retardant plastic material has good thermal stability, excellent electrical insulation, ductility, dimensional stability and chemical resistance, and has higher strength, heat resistance and cold resistance, and can be used in complex environments in a mine, the concave-convex structures on the inner and outer surfaces of the copper shell leave a certain space inside, and the length of the flameout channel is increased, since the outer edge of the photoelectric plug is made of ceramic material and has good insulation and chemical stability, the photoelectric plug can effectively form the explosion-proof surface with the connecting pipe, and realize the explosion-proof function of the structure.

[0005] The copper shell of the socket optical interface assembly is internally provided with a long fixing sleeve, the long fixing sleeve is internally provided with a ceramic long plug core, one end of the ceramic long plug core away from the plug shell is sequentially sleeved with a plug core spring, a blocking sleeve and a compression tube, and the other end of the compression tube is sleeved with a fastening spring. The copper shell of the plug optical interface assembly is internally provided with a short fixing sleeve, the short fixing sleeve is internally provided with a ceramic short plug core, one end of the ceramic short plug core away from the socket shell is sequentially sleeved with a plug core spring, a blocking sleeve and a compression tube, the other end of the compression tube is sleeved with a fastening spring, and the other end of the ceramic short plug core is sleeved with a ceramic pipe fitting, and the other end of the ceramic pipe fitting is sleeved with a ceramic pipe cover.

[0006] The force value of the spring rear sleeve is between 2-3N, the spring rear sleeve is tightly pressed to ensure the pressing force, reliable connection of light is realized, the front end pressure can be effectively increased after the spring rear sleeve is tightly pressed, the gap is prevented from causing light to run out, the overall structure is more compact after the spring rear sleeve is installed, the connection problem is prevented, and reliable connection is realized.

[0007] Further, the small hole with a diameter of 0.125 mm is arranged at the central axis of the ceramic long and short insertion cores, the optical fiber is inserted into the small hole, the ceramic long and short insertion cores adopt SC type ceramic insertion cores, the SC ceramic insertion cores can well solve the problems of wiring and optical fiber connection, the SC ceramic insertion cores are widely used in places requiring quick connection, and a quick and stable connection is provided, and the optical fiber can be conveniently and quickly fixed and connected.

[0008] Further, the end, away from the socket shell, of the connecting pipe is fastened with the shell rear sleeve, the end, away from the socket shell, of the optical cable is sequentially sleeved with a gasket, a sealing rubber ring and a gasket, the end, away from the socket shell, of the gasket is fastened with the outlet nut, and the optical signal cable of the optical cable is inserted into the corresponding ceramic short insertion core.

[0009] Further, the outer circle of the connecting end of the photoelectric plug is covered with a copper shell structure, the central axis of the photoelectric plug is provided with a small hole with a diameter of 0.125 mm, the optical fiber is inserted into the small hole, and the optical fiber adopts a glass silk material. The ceramic material at the photoelectric plug is high-temperature solidified, the roughness Ra of the side, in contact with the copper shell structure, of the ceramic material is 0.4 after grinding, the connecting end of the photoelectric plug adopts a ceramic material, has good rigidity, high compression strength, high wear resistance and oxidation resistance, has excellent chemical stability, and the ceramic has good insulation properties, the ceramic material at the photoelectric plug has high density, low expansion rate, high temperature resistance and better chemical stability after high-temperature solidification, is convenient to install together with the copper shell of the outer cover after grinding, reduces the gap between the ceramic material and the copper shell of the outer cover, can effectively extinguish the flame to achieve the purpose of explosion prevention, and realizes reliable connection.

[0010] Further, the plug shell and the socket shell are both made of stainless steel material and are customized, can better adapt to the humid environment in a coal mine, can prevent corrosion to a certain extent, prolong the service life of the overall structure, and reduce the cost.

[0011] Compared with the prior art, the present application has the following beneficial effects:

[0012] 1. The present application provides a flame-proof photoelectric interface and process, which installs the optical fiber into the cable, realizes quick connection of the mine-used photoelectric composite cable and equipment, saves space, is convenient and fast to operate, and improves work efficiency.

[0013] 2、The application adopts the photoelectric plug of ceramic material, forms the explosion-proof surface between the ceramic material and the connecting pipe by using the insulation characteristic of the ceramic material, simultaneously carries out high-temperature solidification and grinding to the ceramic material at the photoelectric plug, improves the performance of the ceramic and reduces the gap between the ceramic and the copper shell to achieve the purpose of extinguishing the flame, and the inner and outer surfaces of the copper shell of the socket optical interface assembly and the copper shell of the plug optical interface assembly are provided with concave-convex structures, so that the length of the flameout channel is increased. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a structure schematic view of the socket shell and internal components of the explosion-proof photoelectric interface of the application.

[0015] Fig. 2 It is a structure schematic view of the plug shell and internal components of the explosion-proof photoelectric interface of the application.

[0016] Fig. 3 It is a whole structure schematic view of the explosion-proof photoelectric interface of the application.

[0017] Fig. 4 It is a structure schematic view of the plug of the explosion-proof photoelectric interface of the application.

[0018] Fig. 5 It is a structure schematic view of the plug of the explosion-proof photoelectric interface of the application.

[0019] Fig. 6 It is a structure schematic view of the socket of the explosion-proof photoelectric interface of the application.

[0020] Reference signs:

[0021] 1, socket shell; 11, socket optical interface assembly; 111, long fixed sleeve; 112, ceramic long plug core; 12, socket electrical interface assembly; 2, plug shell; 21, plug optical interface assembly; 211, short fixed sleeve; 212, ceramic short plug core; 213, ceramic pipe fitting; 214, ceramic pipe cover; 215, plug core spring; 216, blocking sleeve; 217, compression tube; 218, spring rear sleeve; 219, connecting pipe; 220, shell rear sleeve; 221, gasket; 222, sealing rubber ring; 223, wire outlet nut; 224, photoelectric cable; 225, photoelectric plug; 22, plug electrical interface assembly; 3, spring washer; 4, screw; 5, snap ring; 6, socket core filler; 7, plug core filler; 8, O-ring; 9, copper shell. DETAILED DESCRIPTION

[0022] In order for those skilled in the art to better understand the application, the technical solutions of the application are further described below in combination with the drawings and examples.

[0023] In the present application, the serial numbers of components, such as "first", "second", etc., are used only to distinguish the described objects, and do not have any order and technical meaning. The "connection" and "coupling" in the present application include direct or indirect connection unless otherwise specified. It should be understood that the orientations or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0024] As Figs. 1-3As shown, the explosion-proof optical and electrical interface is disclosed, comprising a socket shell 1 and a plug shell 2, the socket shell 1 is detachably connected with the plug shell 2, the socket shell 1 is internally provided with a socket optical interface assembly 11, one end of the socket optical interface assembly 11 is electrically connected with an optical fiber in the equipment, the other end of the socket optical interface assembly 11 is electrically connected with a plug optical interface assembly 21, the plug optical interface assembly 21 is installed inside the plug shell 2, the other end of the plug optical interface assembly 21 is electrically connected with an optical fiber in an optical cable 224; the socket shell 1 is further internally provided with a socket electrical interface assembly 12, the socket electrical interface assembly 12 is electrically connected with a plug electrical interface assembly 22, the plug electrical interface assembly 22 is arranged inside the plug shell 2; the socket optical interface assembly 11 and the socket electrical interface assembly 12 are externally filled with a socket core filler 6, the socket optical interface assembly 11, the socket electrical interface assembly 12 and the socket core filler 6 are injection molded together and clamped on the socket shell 1 by a clamping ring 5; the socket optical interface assembly 11 comprises a copper shell 9, the copper shell 9 is wrapped by the socket core filler 6, the socket core filler 6 and the copper shell 9 are injection molded as an integral structure, the plug optical interface assembly 21 comprises a copper shell 9, the copper shell 9 is wrapped by a plug core filler 7, the plug core filler 7 and the copper shell 9 are injection molded as an integral structure, the copper shell 9 of the socket optical interface assembly 11 and the copper shell 9 of the plug optical interface assembly 21 are internally and externally provided with a concave-convex structure, the socket core filler 6 and the plug core filler 7 are made of flame-retardant plastic material, the optical cable 224 comprises an optical and electrical plug 225, the optical and electrical plug 225 is arranged at one end of the optical cable 224 close to the plug shell 2, a connecting pipe 219 is arranged at the end of the plug shell 2 away from the socket shell 1, the optical and electrical plug 225 is inserted into the connecting pipe 219, an explosion-proof surface is formed between the outer edge of the optical and electrical plug 225 and the connecting pipe 219, the overall structure realizes optical and electrical transmission while having an explosion-proof function, the flame-retardant plastic material has good thermal stability, excellent electrical insulation, ductility, dimensional stability and chemical resistance, while having higher strength, heat resistance and cold resistance, and can be used in complex environments underground mines, the concave-convex structure on the inner and outer surfaces of the copper shell 9 leaves a certain space inside and increases the length of the flameout passage, since the outer edge of the optical and electrical plug 225 is made of ceramic material and has good insulation and chemical stability, the optical and electrical plug 225 can effectively form an explosion-proof surface with the connecting pipe 219, realizing the explosion-proof function of the structure.

[0025] As Figs. 4-6As shown, the copper shell 9 of the socket optical interface assembly 11 is internally provided with a long fixing sleeve 111, the long fixing sleeve 111 is internally provided with a ceramic long ferrule 112, the ceramic long ferrule 112 is sleeved into the ferrule spring 215, the stop sleeve 216 and the compression tube 217 in sequence away from the plug shell 2, and the other end of the compression tube 217 is fastened with the spring rear sleeve 218. The copper shell 9 of the plug optical interface assembly 21 is internally provided with a short fixing sleeve 211, the short fixing sleeve 211 is internally provided with a ceramic short ferrule 212, the ceramic short ferrule 212 is sleeved into the ferrule spring 215, the stop sleeve 216 and the compression tube 217 in sequence away from the socket shell 1, the other end of the compression tube 217 is fastened with the spring rear sleeve 218, the other end of the ceramic short ferrule 212 is sleeved into the porcelain pipe 213, and the other end of the porcelain pipe 213 is fastened with the porcelain pipe cover 214.

[0026] The force value of the spring rear sleeve 218 is between 2-3N, the spring rear sleeve 218 is tightly pressed to ensure the compression force, realize reliable connection of light, the spring rear sleeve 218 can effectively increase the front end pressure after being tightly pressed, prevent the gap from causing light to run out, the installation of the spring rear sleeve 218 can make the overall structure more compact, prevent the connection from being problematic, and realize reliable connection.

[0027] Preferably, the ceramic long ferrule 112 and the ceramic short ferrule 212 have a small hole with a diameter of 0.125mm at the central axis, an optical fiber is inserted into the small hole, the ceramic long ferrule 112 and the ceramic short ferrule 212 adopt SC type ceramic ferrules, the SC ceramic ferrules can well solve the problems of wiring and optical fiber connection, the SC ceramic ferrules are widely used in places requiring quick connection, and provide a quick and stable connection, which can conveniently and quickly fix and connect the optical fiber.

[0028] Preferably, the connecting tube 219 is fastened with the shell rear sleeve 220 away from the socket shell 1, the optical cable 224 is sleeved into the gasket 221, the sealing rubber ring 222 and the gasket 221 in sequence away from the socket shell 1, the gasket 221 is fastened with the outlet nut 223 away from the socket shell 1, and the optical signal cable of the optical cable 224 is inserted into the corresponding ceramic short ferrule 212.

[0029] Preferably, the outer circle of the connecting end of the photoelectric plug 225 is covered with a copper shell 9 structure, the center axis of the photoelectric plug 225 has a small hole of 0.125 mm, the optical fiber is passed through the small hole, and the optical fiber is made of glass silk material. The ceramic material at the photoelectric plug 225 is high-temperature cured, the roughness Ra of the side of the ceramic material in contact with the copper shell 9 structure after grinding is 0.4, the connecting end of the photoelectric plug 225 is made of ceramic material, has good rigidity, high compressive strength, high wear resistance and oxidation resistance, has excellent chemical stability and the ceramic has good insulation properties, the ceramic material at the photoelectric plug 225 has high density, low expansion rate, high temperature resistance and better chemical stability after high-temperature curing, is convenient to install with the outer cover copper shell 9 after grinding, reduces the gap between the ceramic material and the outer cover copper shell 9, can effectively extinguish the flame to achieve the purpose of explosion-proof, and realizes reliable connection.

[0030] Preferably, the plug shell 2 and the socket shell 1 are both made of stainless steel material, which can better adapt to the humid environment of the coal mine, prevent corrosion to a certain extent, prolong the service life of the overall structure, and reduce the cost.

[0031] The above is only an embodiment of the present application, and the specific structure and characteristics of the scheme are not described in detail, and the ordinary technical personnel in the art know all the ordinary technical knowledge in the art before the application date or the priority date, can know all the prior art in the field, and have the ability to apply conventional experimental means before the date, and the ordinary technical personnel in the art can improve and implement the scheme under the inspiration of the present application, some typical known structures or known methods should not be an obstacle for the ordinary technical personnel in the art to implement the present application. It should be pointed out that, for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should be considered as the protection scope of the present application, which will not affect the effect and practicality of the patent.

Claims

1. An explosion-proof optical interface, characterized in that: The socket shell is detachably connected with the plug shell, the socket shell is internally provided with a socket optical interface assembly, one end of the socket optical interface assembly is electrically connected with an optical fiber in the equipment, the other end of the socket optical interface assembly is electrically connected with a plug optical interface assembly, the plug optical interface assembly is installed in the interior of the plug shell, and the other end of the plug optical interface assembly is electrically connected with an optical fiber in an optical cable; The interior of the socket shell is further provided with a socket electrical interface assembly, the socket electrical interface assembly is electrically connected with a plug electrical interface assembly, and the plug electrical interface assembly is arranged in the interior of the plug shell; The socket optical interface assembly and the socket electrical interface assembly are externally filled with a socket core filling body, the socket optical interface assembly, the socket electrical interface assembly and the socket core filling body are injection molded together and are clamped on the socket shell through a snap ring; The socket optical interface assembly comprises a copper shell, the copper shell is wrapped by the socket core filling body, and the socket core filling body and the copper shell are injection molded into an integrated structure; the plug optical interface assembly comprises a copper shell, the copper shell is wrapped by a plug core filling body, and the plug core filling body and the copper shell are injection molded into an integrated structure; the copper shell of the socket optical interface assembly and the copper shell of the plug optical interface assembly are internally and externally provided with a concave-convex structure; and the socket core filling body and the plug core filling body are made of flame-retardant plastic material. The optical cable comprises an optical and electrical plug, the optical and electrical plug is arranged at one end of the optical cable close to the plug shell, the end of the plug shell away from the socket shell is provided with a connecting pipe, the optical and electrical plug is inserted into the connecting pipe, and an explosion-proof surface is formed between the outer edge of the optical and electrical plug and the connecting pipe; The copper shell of the socket optical interface assembly is internally provided with a long fixing sleeve, the long fixing sleeve is internally provided with a ceramic long plug core, and the end of the ceramic long plug core away from the plug shell is sequentially sleeved with a plug core spring, a blocking sleeve and a pressing pipe; the other end of the pressing pipe is fastened with a spring rear sleeve; The copper shell of the plug optical interface assembly is internally provided with a short fixing sleeve, the short fixing sleeve is internally provided with a ceramic short plug core, and the end of the ceramic short plug core away from the socket shell is sequentially sleeved with a plug core spring, a blocking sleeve and a pressing pipe; the other end of the pressing pipe is fastened with a spring rear sleeve; the other end of the ceramic short plug core is sleeved with a ceramic pipe fitting, and the other end of the ceramic pipe fitting is fastened with a ceramic pipe cover.

2. The flameproof photoelectric interface according to claim 1, characterized in that: The force value of the spring rear sleeve is between 2-3N.

3. The flameproof photoelectric interface according to claim 1, characterized in that: The ceramic long plug core and the ceramic short plug core are provided with a small hole with a diameter of 0.125 mm at the central axis, an optical fiber is inserted into the small hole, and the ceramic long plug core and the ceramic short plug core adopt an SC type ceramic plug core.

4. The flameproof photoelectric interface according to claim 1, characterized in that: The end of the connecting pipe away from the socket shell is fastened with a shell rear sleeve, the end of the optical cable away from the socket shell is sequentially sleeved with a gasket, a sealing rubber ring and a gasket, the end of the gasket away from the socket shell is fastened with a wire outlet nut, and the optical signal cable of the optical cable is inserted into the corresponding ceramic short plug core.

5. The flameproof photoelectric interface according to claim 1, characterized in that: The outer ring of the connecting end of the optical and electrical plug is covered with a copper shell structure, the central axis of the optical and electrical plug is provided with a small hole with a diameter of 0.125 mm, and the optical fiber is inserted into the small hole, and the optical fiber adopts a glass silk material.

6. The flameproof photoelectric interface according to claim 5, characterized in that: The connecting end of the optical and electrical plug is made of ceramic material and is solidified into an integrated structure, and the surface in contact with the copper shell structure is ground to have a roughness Ra of 0.

4.

7. The flameproof photoelectric interface according to claim 1, characterized in that: The plug housing and the socket housing are made of stainless steel.

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