CN209896346U - High-density connector resistant to nuclear-grade environment - Google Patents
High-density connector resistant to nuclear-grade environment Download PDFInfo
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- CN209896346U CN209896346U CN201920859353.5U CN201920859353U CN209896346U CN 209896346 U CN209896346 U CN 209896346U CN 201920859353 U CN201920859353 U CN 201920859353U CN 209896346 U CN209896346 U CN 209896346U
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Abstract
The utility model relates to a high-density connector of nuclear grade environment, which comprises a plug and a socket, wherein the plug comprises a connecting nut, a spline shell which is arranged in the connecting nut and is limited by a retainer ring and a second limiting mechanism, and an insulator part which is arranged in the spline shell and is limited by a clamp spring and a first limiting mechanism; the insulator component comprises an insulating pressing plate and a high insulator, and double-head jack contact pieces are arranged in the insulating pressing plate and the high insulator in a penetrating manner; the groove on the insulating pressure plate is communicated with the groove on the high insulator to form an anti-rotation groove, and the anti-rotation groove is matched with the key platform in the spline shell to prevent rotation; an O-shaped sealing ring I and a ratchet are also arranged outside the spline shell; a shielding strip corresponding to the ratchet is also arranged in the connecting screw cap; the socket is formed by integrally sintering a socket shell, a glass cake II and a double-head contact pin contact piece through glass. The utility model discloses a promotion of insulating properties, irradiation-resistant, ageing-resistant, resistant saturated steam, long service life satisfy K1 class nuclear level environment operation requirement.
Description
Technical Field
The utility model relates to a connector technical field specifically is a high density connector of resistant nuclear level environment.
Background
Special cables and cable connector assemblies of CAP series nuclear power plants arranged under large-scale advanced pressurized water reactors and high-temperature gas cooled reactor nuclear power plants require CAP series electrical connectors to meet the use requirements of K1-type nuclear-resistant environments, namely: high insulation (more than 1T omega), radiation resistance, aging resistance, saturated steam resistance and long service life (60 years). The performance (insulation is more than 5000M omega, service life is 14 years) of the existing common electrical connector obviously cannot meet the use requirement of the nuclear-grade environment resistance of CAP series electrical connectors.
The requirement of 60-year service life of CAP series electrical connectors in nuclear power plants also poses a great challenge on the sealing life, and the sealing technology with long service life is also a hot topic in the nuclear power field in recent years. The sealing of various valve and pipeline joint surfaces in a nuclear power plant is realized by developing the prior rubber sealing ring into the current inorganic sealing elements such as graphite sealing rings, metal sealing rings and the like. However, due to the limitations of the structure and the use characteristics of the electrical connector assembly, the existing graphite sealing ring and the existing metal sealing ring cannot be directly applied to the product.
Disclosure of Invention
In view of the above-mentioned defect, the utility model provides a high density connector of resistant nuclear level environment has realized the promotion of insulating properties, and irradiation-resistant, ageing-resistant, resistant saturated steam, long service life satisfy K1 class nuclear level environment operation requirement, provide a CAP series electrical connector that is suitable for CAP series nuclear power plant nuclear level special cable and cable connector subassembly that large-scale advanced pressurized-water reactor and high temperature gas cooled reactor nuclear power station down.
The technical problem of the utility model is solved by adopting the following technical scheme, according to the utility model provides a high-density connector of nuclear grade environment, including plug and the socket of inserting with the plug, the plug includes the coupling nut, installs in the coupling nut and through the retaining ring and the spacing spline housing of second stop gear, installs in the spline housing and through the jump ring and the spacing insulator part of first stop gear; the insulator part comprises an insulating pressing plate and a high insulator, through holes are formed in the insulating pressing plate and the high insulator, the number of the through holes is equal to that of the through holes in the insulating pressing plate and the through holes in the high insulator are correspondingly arranged, and the double-head jack contact piece is fixedly arranged in the through holes in the high insulator and the insulating pressing plate in a penetrating mode to enable the high insulator and the insulating pressing plate to be buckled; the groove on the insulating pressure plate is communicated with the groove on the high insulator to form an anti-rotation groove, the anti-rotation groove is matched with a key platform in the spline shell, and the key platform is clamped in the anti-rotation groove to prevent the insulator part from rotating in the spline shell; the stop step I arranged on the outer wall of the high insulator is matched with the stop step II arranged in the spline shell to form a first limiting mechanism, a clamp spring groove is also arranged in the spline shell, and the clamp spring is arranged in the clamp spring groove; an O-shaped sealing ring I and a ratchet are also arranged outside the spline shell;
defining one end of a plug, which is plugged with a socket, as a front end of the plug, and one end of the socket, which is plugged with the plug, as a front end of the socket; the stop step III arranged at the rear end of the connecting nut is matched with the stop step IV arranged on the outer wall of the spline shell to form the second limiting mechanism, and the ratchet is arranged on the stop step IV; the retainer ring is sleeved on the circumference of the outer wall of the spline shell and is positioned at the rear end of the retaining step III; a shielding strip is also arranged in the connecting screw cap, and the shielding strip corresponds to the ratchet;
the socket is an integrated structure formed by sintering glass, namely a socket shell, a glass cake II arranged in the socket shell and a double-head contact pin contact element fixed in the glass cake II; the number of the double-head pin contact members is equal to that of the double-head jack contact members, and the pin and the jack are matched in size and position.
Further, one end of the double-ended socket contact is located in the through hole of the high insulator and the other end is located in the through hole of the insulating platen.
Furthermore, the plug is also connected with a sintering component, the sintering component is an integrated structure formed by sintering a sintering component shell, a glass cake I arranged in the sintering component shell and a contact A fixed in the glass cake I through glass, and the contact A is a double-head contact pin contact structure.
Furthermore, the sintered part and the plug are inserted into each other at the rear end, and after the sintered part and the plug are inserted into each other in place, the connection part of the sintered part shell and the spline shell is welded together through laser welding.
Furthermore, an O-shaped sealing ring II is further mounted on the inner wall of the shell at the socket insertion end.
Preferably, the O-shaped sealing ring I and the O-shaped sealing ring II are made of special polysiloxane rubber materials; the spline shell, the connecting nut shell, the sintering part shell, the socket shell and the retainer ring are all made of stainless steel; the high insulator and the insulating pressing plate are made of ceramic materials.
Further, the surfaces of the insulating pressing plate and the high insulator are preferably cleaned by absolute ethyl alcohol and coated with inorganic glue.
Further, the number of dual-head receptacle contacts in the plug may be 2 or 8 or 9 or 14.
Compared with the prior art, the utility model has the advantages of it is following:
(1) the utility model discloses a structure and the setting of retaining ring can conveniently change and maintain O type sealing washer I, can prevent through the cooperation of preventing changeing recess and key platform that insulator part from rotating in spline housing, and jump ring and first stop gear can be fixed insulator part and avoid its axial deflection in spline housing, can avoid its axial deflection in coupling nut with spline housing spacing fixing through retaining ring and second stop gear. The plug can also be inserted into other connecting ends through the glass sintering part, and the adaptability is good.
(2) The utility model discloses a three-thread anti loosening structure welds through laser between the casing and seals. The laser welding is an efficient precise welding method which uses a laser beam with high energy density as a heat source, the energy is concentrated, the welding heat affected area is small, and the strength of a welding seam is equal to or even superior to that of a base metal. The connector is welded by laser on the basis of meeting the sealing performance, and has the advantages of vibration resistance, maintenance-free performance and the like.
(3) The utility model discloses a promotion of insulating properties can be realized to the structure, and irradiation-resistant, ageing-resistant, saturated steam resistant, long service life satisfy K1 class nuclear level environment operation requirement, provide a CAP series electrical connector that is suitable for CAP series nuclear power plant nuclear level special cable and cable connector subassembly that large-scale advanced pressurized-water reactor and high temperature gas cooled reactor nuclear power station set up.
(4) The utility model discloses have excellent environment and tolerate the performance, can shield influence such as heat, irradiation, steam, pressure, chemical corrosion among the external environment. The utility model discloses the used material of electrical connector removes O type sealing washer I and O type sealing washer II and is that organic material needs periodic replacement, and other are stainless steel like spline casing, connecting nut casing, sintering part casing, socket casing, retaining ring. The high insulator and the insulating pressing plate are both made of ceramic materials, and the insulating part for fixing the contact element of the contact pin in the socket is a glass cake and is made of glass materials, so that the high insulator and the insulating pressing plate are not influenced by factors such as high temperature, high irradiation and the like of a nuclear power plant and are suitable for nuclear-grade environment. Just the utility model discloses a connector adopts multiple modes such as O type sealing washer, laser welding, glass sintering to combine to realize the sealed protection of connector internal contact, satisfies nuclear level environment operation requirement, can reach the insulation resistance more than 1T omega, and the service life can reach more than 60 years, compares original insulation resistance 5000M omega, the electrical connector of life only 14 years, and the performance promotes greatly, has satisfied the operation requirement of nuclear level special environment.
Drawings
Fig. 1 is a perspective view of a plug with a sintered part according to the present invention.
Fig. 2 is a sectional view of fig. 1.
Fig. 3 is a schematic structural diagram of the socket of the present invention.
Fig. 4 is an assembly schematic of an insulator component and a dual-headed jack contact.
FIG. 5 is a schematic view of the assembly of the insulator component with the spline housing.
Fig. 6 is a schematic view of the assembly of the shield strips and the coupling nuts.
FIG. 7 is a schematic view of the assembly of the spline housing with the coupling nut and the retainer ring.
Fig. 8 is a schematic view of the sintered part assembled with the plug.
Element and symbol description:
1: and (3) connecting the screw cap 2: and (3) a retainer ring: the spline housing 4: clamp spring
5: insulating pressing plate 6: high insulator 7: double-end jack contact 8: anti-rotation groove
9: the key bed 10: stop step I11: and a stopping step II 12: perforations in insulating press plates
13: stop step III 14: ratchet 15: o-shaped sealing ring I16: stopping step IV
17: ring groove 18: rivet 19: the shield strip 20: sintered component housing
21: glass cake I22: contact A23: the receptacle housing 24: glass cake II
25: double-ended pin contact 26: o-shaped seal ring II 27: through-hole in high insulation 28: rivet hole
Detailed Description
In order to further explain the technical means and technical effects of the present invention, the following description is made in detail with reference to the accompanying drawings and embodiments.
For convenience of description, the end of the plug and the socket that are plugged together is defined as the front end of the plug, and the end of the socket and the plug that are plugged together is defined as the front end of the socket. The right end in fig. 2 is the front end of the plug, and the left end in fig. 3 is the front end of the socket.
The utility model discloses a plug and with the socket of this plug to inserting, the plug includes coupling nut 1, install in this coupling nut and through retaining ring 2 and the spacing fixed spline housing 3 of second stop gear, install in the spline housing and through jump ring 4 and the spacing insulator part of first stop gear, the insulator part including insulating pressing plate 5 and the high insulator 6 that is ceramic material, all seted up the perforation in insulating pressing plate and the high insulator, perforation size and number between them equal and correspond the setting, the double-end jack contact 7 one end is worn to adorn and is fixed and make high insulator and insulating pressing plate lock in the perforation 12 of insulating pressing plate is worn to adorn to fix the other end in the perforation 27 of high insulator, the quantity of double-end jack contact 7 equals with the quantity of perforation 27 in the high insulator. All seted up the recess on insulating clamp plate and the high insulator, recess on the insulating clamp plate after high insulator and insulating clamp plate lock and the recess on the high insulator correspond and form and prevent changeing recess 8, should prevent changeing recess and spline housing in the key platform 9 match, after the insulator part is packed into spline housing, the key platform 9 card in the spline housing is gone into and is used for preventing the insulator part from rotating in spline housing in this is prevented changeing recess 8. The outer wall of the high insulator is further provided with a stop step I10, a clamp spring groove and a stop step II 11 are further arranged in the spline shell, the stop step I and the stop step II are matched to form a first limiting mechanism, the clamp spring 4 is installed in the clamp spring groove, and the insulator part is limited and fixed in the spline shell through the clamp spring and the first limiting mechanism and is prevented from rotating through the matching of the anti-rotation groove and the key platform. A stopping step IV 16 is further arranged outside the spline shell, a ratchet 14 is further arranged on the stopping step IV 16, and an O-shaped sealing ring I15 is further arranged outside the spline shell and is located in front of the stopping step IV.
The rear end of the connecting nut is further provided with a stopping step III 13, the stopping step III and the stopping step IV form the second limiting mechanism, the spline shell is installed in the connecting nut, the rear end of the spline shell penetrates out of the rear end of the connecting nut, the stopping ring is sleeved on the circumference of the outer wall of the spline shell and located at the rear end of the stopping step III, the spline shell is limited and fixed in the connecting nut through the stopping ring and the second limiting mechanism to prevent the spline shell from axially deviating in the connecting nut, and the stopping ring can be detached through a special tool and is convenient to replace and maintain an O-shaped sealing ring I on the spline shell. An annular groove 17 is further formed in the connecting nut, the annular groove 17 is formed in the front end of the stopping step III 13 and corresponds to the stopping step IV 16, a shielding strip 19 is mounted in the annular groove through a rivet 18, and the mounting mode of the rivet is shown in figure 6. The rivet passes through the through hole on the shielding strip and then is fixed into the rivet hole 28 on the connecting nut, so that the shielding of the plug shell is realized, the position of the shielding strip 19 corresponds to the position of the ratchet 14, when the spline shell rotates in the circumferential direction, the friction force between a plurality of bulges on the shielding strip and the ratchet is increased, and the locking effect of threads can be realized by the matching of the shielding strip and the ratchet.
Furthermore, the length of the spline shell is greater than that of the connecting nut shell, the total length of the insulator part is greater than that of the connecting nut shell, the rear end of the spline shell penetrates out of the rear end of the connecting nut, and the rear end face of the insulating pressing plate is recessed relative to the rear end face of the spline shell.
The plug can also be connected with other connecting ends through a connecting glass sintering component, the sintering component comprises a sintering component shell 20, a glass cake I21 and a contact element A22, the sintering component shell, the glass cake I and the contact element A are manufactured into an integrated structure through glass sintering, the contact element A is a double-head pin contact element or a single-head pin contact element, and the other end of the single-head pin contact element is of a jack structure. The pin end of the sintering part is inserted into the jack at the rear end of the plug and is contacted with the double-head jack contact piece, the rear end face of the insulating pressing plate is sunken relative to the rear end face of the spline shell, and the tail part sealing is realized by welding the joint of the sintering part shell 20 and the spline shell 3 together through laser welding after the sintering part and the rear end of the plug are inserted and combined in place.
The utility model discloses the socket of connector includes socket shell 23, sets up glass cake II 24 in socket shell and is fixed in the double-end contact pin contact 25 in the glass cake II, and socket shell, glass cake II and double-end contact pin contact three make the integral type structure through the glass sintering, and the socket inserts the shells inner wall of closing the end and still installs O type sealing washer II 26 and be used for plug and socket to playing sealed effect after inserting.
Further, the number of the through holes 27 in the plug high insulator is not limited, and may be 2, 8, 9 or 14, and accordingly, the double-ended socket contacts 7 are 2, 8, 9 or 14, respectively, corresponding to 2-core, 8-core, 9-core or 14-core plugs, respectively, and correspondingly, the number of the double-ended pin contacts 25 in the socket is 2, 8, 9 or 14, respectively. The outer diameter can be made to the casing of 2 core plugs and be 23mm, and the outer diameter can be made to the casing of 8 core or 9 core plugs and be 30mm, and the outer diameter can be made to the casing of 4 core plugs and be 33mm, nevertheless the utility model discloses be not limited to above-mentioned core number and size, can be changeable in a flexible way according to actual conditions.
Further, retaining ring 2 is for being equipped with little open-ended annular structure, and the retaining ring internal diameter is less than spline housing tail end external diameter under the unstressed state, and the little opening on the retaining ring provides deformation space for the retaining ring during atress and is convenient for the installation and the dismantlement of retaining ring, and the retaining ring tightly blocks solid at spline housing outer wall and plays the fixed action after the installation. The spline shell can be taken out from the connecting nut after the check ring is detached by using the tool, so that the O-shaped sealing ring I can be maintained and replaced conveniently.
Furthermore, the surfaces of the insulating pressing plate and the high insulator are cleaned by absolute ethyl alcohol and coated with inorganic glue, so that the phenomenon that the insulating property is influenced or unstable due to the fact that the insulating resistance of the surface of the insulator part is reduced by factors such as weather, dust, water vapor and the like is avoided.
Furthermore, the O-shaped sealing ring I and the O-shaped sealing ring II are both special polysiloxane rubber materials with high temperature resistance, irradiation resistance and aging resistance. The number of the O-shaped sealing rings I and the O-shaped sealing rings II is not limited, the number of the O-shaped sealing rings I is two as shown in figure 2, and the number of the O-shaped sealing rings II is one as shown in figure 3.
When the plug is assembled, the double-head jack contact element is firstly installed in the high insulator to enable one end of the double-head jack contact element to be located in the high insulator, then the other end of the double-head jack contact element is installed in a through hole of the insulating pressing plate to enable the insulating pressing plate to be buckled with the high insulator, and when the insulating pressing plate is installed, the groove in the insulating pressing plate corresponds to the groove in the high insulator and then penetrates into the double-head jack contact element so as to form the anti-rotation groove. An insulator part formed by an insulating pressing plate and a high insulator is arranged in the spline shell from the rear part of the spline shell to the front (from left to right in figure 5), a stop step I on the outer wall of the high insulator is limited by a stop step II in the spline shell to form a first limiting mechanism, a clamp spring is arranged in a clamp spring groove in the spline shell while the insulator part is arranged, and a key platform in the spline shell is clamped into an anti-rotation groove while the insulator part is arranged. The shielding strip is installed into a ring groove of a connecting nut through a rivet and fixed, then a spline with an insulator component installed is installed into the connecting nut from the front end of the connecting nut to the back (from left to right in the figure 7), a stop step IV on the spline is limited by a stop step III arranged at the back end of the connecting nut to form a second limiting mechanism, the back end of the spline penetrates out of the back end of the connecting nut, a check ring is installed on the outer wall of the back end of the spline and located at the back end of the stop step III, the spline is prevented from axially deviating in the connecting nut through the check ring and the second limiting mechanism, the ratchet and a bulge on the shielding strip are matched to play a role in thread anti-loosening, and finally the plug is assembled. The front end of the plug is an insertion end and is in opposite insertion with a socket insertion end (socket front end) to form electrical connection. The rear end of the plug can also be electrically connected with other connecting ends through a plug-in glass sintering component. The pin end of the contact element A in the glass sintering component is inserted into the back end of the plug, and the other end of the contact element A is inserted into the jack of other connecting components (the other end of the contact element A is also a pin) or the pin (the other end of the contact element A is a jack).
Further, the utility model discloses all casings of connector are stainless steel, for example spline casing, connecting nut casing, sintering part casing, socket casing. The retainer ring is made of stainless steel. High insulator and insulating clamp plate are ceramic material, and glass cake I and glass cake II are glass material, the utility model discloses a connector except O type sealing washer I and O type sealing washer II that organic material needs periodic replacement, other parts are stainless steel, glass, pottery respectively, can not receive the influence of factors such as nuclear power plant high temperature, high irradiation, adaptation nuclear level environment. Just the utility model discloses a connector adopts multiple modes such as O type sealing washer, laser welding, glass sintering to combine to realize the sealed protection of connector internal contact, satisfies nuclear level environment operation requirement, can reach the insulation resistance more than 1T omega, and the service life can reach more than 60 years, compares original insulation resistance 5000M omega, the electrical connector of life only 14 years, and the performance promotes greatly, has satisfied the operation requirement of nuclear level special environment.
The above embodiments are only examples of the present invention, and are not intended to limit the present invention in any form, and the present invention can also have other forms of embodiments according to the above structures and functions, and they are not listed one by one. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention will still fall within the scope of the technical solution of the present invention by those skilled in the art without departing from the scope of the technical solution of the present invention.
Claims (8)
1. A high-density connector resistant to nuclear-grade environment comprises a plug and a socket oppositely inserted with the plug, and is characterized in that the plug comprises a connecting nut, a spline shell mounted in the connecting nut and limited by a retainer ring and a second limiting mechanism, and an insulator part mounted in the spline shell and limited by a clamp spring and a first limiting mechanism; the insulator part comprises an insulating pressing plate and a high insulator, through holes are formed in the insulating pressing plate and the high insulator, the number of the through holes is equal to that of the through holes in the insulating pressing plate and the through holes in the high insulator are correspondingly arranged, and the double-head jack contact piece is fixedly arranged in the through holes in the high insulator and the insulating pressing plate in a penetrating mode to enable the high insulator and the insulating pressing plate to be buckled; the groove on the insulating pressure plate is communicated with the groove on the high insulator to form an anti-rotation groove, the anti-rotation groove is matched with a key platform in the spline shell, and the key platform is clamped in the anti-rotation groove to prevent the insulator part from rotating in the spline shell; the stop step I arranged on the outer wall of the high insulator is matched with the stop step II arranged in the spline shell to form a first limiting mechanism, a clamp spring groove is also arranged in the spline shell, and the clamp spring is arranged in the clamp spring groove; an O-shaped sealing ring I and a ratchet are also arranged outside the spline shell;
defining one end of a plug, which is plugged with a socket, as a front end of the plug, and one end of the socket, which is plugged with the plug, as a front end of the socket; the stop step III arranged at the rear end of the connecting nut is matched with the stop step IV arranged on the outer wall of the spline shell to form the second limiting mechanism, and the ratchet is arranged on the stop step IV; the retainer ring is sleeved on the circumference of the outer wall of the spline shell and is positioned at the rear end of the retaining step III; a shielding strip is also arranged in the connecting screw cap, and the shielding strip corresponds to the ratchet;
the socket is an integrated structure formed by sintering glass, namely a socket shell, a glass cake II arranged in the socket shell and a double-head contact pin contact element fixed in the glass cake II; the number of the double-head pin contact members is equal to that of the double-head jack contact members, and the pin and the jack are matched in size and position.
2. The high-density connector of claim 1, wherein the double-ended receptacle contacts are positioned with one end in the through-holes of the high-dielectric body and with the other end in the through-holes of the dielectric platen.
3. The high-density connector as claimed in claim 1, wherein the plug is further connected to a sintered member formed by sintering three members of a sintered member housing, a glass cake i disposed in the sintered member housing, and a contact a fixed in the glass cake i into an integrated structure by glass sintering, the contact a being a double-ended pin contact structure.
4. A high density connector as recited in claim 3, wherein the sintered part is inserted into the rear end of the plug and the housing of the sintered part is welded to the housing of the spline by laser welding after the sintered part and the plug are inserted into position.
5. The high-density connector as claimed in claim 1, wherein an O-ring ii is further mounted on an inner wall of the housing at the socket-engaging end.
6. The high-density connector of claim 5, wherein the O-ring i and the O-ring ii are made of a special silicone rubber material; the spline shell, the connecting nut shell, the sintering part shell, the socket shell and the retainer ring are all made of stainless steel; the high insulator and the insulating pressing plate are made of ceramic materials.
7. The high-density connector of claim 1, wherein said insulating press plate and said high-dielectric surface are cleaned with absolute alcohol and coated with an inorganic adhesive.
8. The high-density connector of claim 1, wherein the number of dual-headed jack contacts in the plug is 2 or 8 or 9 or 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920859353.5U CN209896346U (en) | 2019-06-06 | 2019-06-06 | High-density connector resistant to nuclear-grade environment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920859353.5U CN209896346U (en) | 2019-06-06 | 2019-06-06 | High-density connector resistant to nuclear-grade environment |
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| Publication Number | Publication Date |
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| CN209896346U true CN209896346U (en) | 2020-01-03 |
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| CN201920859353.5U Active CN209896346U (en) | 2019-06-06 | 2019-06-06 | High-density connector resistant to nuclear-grade environment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265830A (en) * | 2019-06-06 | 2019-09-20 | 中航光电科技股份有限公司 | A kind of high-density connector of resistance to nuclear leve environment |
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2019
- 2019-06-06 CN CN201920859353.5U patent/CN209896346U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265830A (en) * | 2019-06-06 | 2019-09-20 | 中航光电科技股份有限公司 | A kind of high-density connector of resistance to nuclear leve environment |
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