CN113964578B - Coaxial male wet electric connector working in strong heat and humidity resistant environment - Google Patents
Coaxial male wet electric connector working in strong heat and humidity resistant environment Download PDFInfo
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- CN113964578B CN113964578B CN202111225967.6A CN202111225967A CN113964578B CN 113964578 B CN113964578 B CN 113964578B CN 202111225967 A CN202111225967 A CN 202111225967A CN 113964578 B CN113964578 B CN 113964578B
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- 238000007789 sealing Methods 0.000 claims abstract description 112
- 210000001503 joint Anatomy 0.000 claims abstract description 52
- 238000003466 welding Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 6
- 239000002002 slurry Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 14
- 238000009413 insulation Methods 0.000 description 8
- 230000008054 signal transmission Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- WSNMPAVSZJSIMT-UHFFFAOYSA-N COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 Chemical compound COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 WSNMPAVSZJSIMT-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 238000009421 internal insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
Classifications
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- 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
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
-
- 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
-
- 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
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/5219—Sealing means between coupling parts, e.g. interfacial seal
-
- 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
-
- 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
- H01R43/26—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for engaging or disengaging the two parts of a coupling device
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Abstract
The invention relates to a coaxial male wet electric connector working in a strong heat and humidity resistant environment, which comprises a non-magnetic rod sleeve and a non-magnetic drill rod in butt joint with the non-magnetic rod sleeve; the non-magnetic drill rod is sleeved with a plurality of contact rings and insulating rings, and a dielectric body is arranged between the contact rings and the insulating rings and between the non-magnetic drill rod; and a multi-core pressure-bearing connector assembly is arranged in the nonmagnetic drill rod and is electrically connected with the contact ring through cables respectively. The invention provides the electric connector which can work in a slurry environment for a long time, has high voltage resistance, high temperature resistance, excellent insulating property and good sealing effect.
Description
Technical Field
The invention relates to the technical field of connectors, in particular to a coaxial male wet electric connector working in a strong heat and humidity resistant environment.
Background
In the prior art, the pressure of the high-temperature high-pressure well exceeds 110MPa, the temperature can reach more than 150 ℃, and the mud density during drilling is 2.22g/cm < 3 >. In order to ensure effective transmission of signals in petroleum logging and drilling processes, the electric connector needs to work in a slurry environment for a long time, and cannot bear high pressure in the wet and high-temperature high-pressure slurry environment, so that liquid components such as slurry and the like easily enter the connector, and the electric connector is in a failure state.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides the electric connector which can work in a slurry environment for a long time and has high voltage resistance, high temperature resistance, excellent insulating property and good sealing effect.
In order to achieve the above purpose, the invention adopts the following technical scheme: a coaxial male wet electric connector working in a strong heat and humidity resistant environment comprises a non-magnetic rod sleeve and a non-magnetic drill rod which is in butt joint with the non-magnetic rod sleeve; the non-magnetic drill rod is sleeved with a plurality of contact rings and insulating rings, and a dielectric body is arranged between the contact rings and the insulating rings and the non-magnetic drill rod; and a multi-core pressure-bearing connector assembly is arranged in the nonmagnetic drill rod and is electrically connected with the contact ring through cables respectively.
Furthermore, the non-magnetic rod sleeve and the non-magnetic drill rod of the coaxial male wet electric connector are of a middle through structure which is coaxially arranged, and the middle through structure of the butt joint of the non-magnetic rod sleeve and the non-magnetic drill rod is convenient for installation of the coaxial male wet electric connector and the female wet electric connector in combination butt joint and convenient for passing of liquid such as mud to be detected in the use process.
In a preferred embodiment of the invention, a plurality of check rings or/and sealing rings are arranged outside the butt joint of the nonmagnetic rod sleeve and the nonmagnetic drill rod; and a plurality of check rings or/and sealing rings are arranged outside the nonmagnetic drill rod. Specifically, the nonmagnetic drill rod is cylindrical, and the outer surface is provided with a sealing groove a, a sealing groove b, a sealing groove c and a sealing groove d, wherein the sealing groove a is used for installing a sealing ring IV, the sealing groove b is used for installing a sealing ring III, and the sealing grooves c and d are used for installing a sealing ring I and a check ring.
In a preferred embodiment of the invention, a plurality of groups of contact rings and insulating rings are circularly sleeved on the nonmagnetic drill rod, insulating rings are embedded between adjacent contact rings, and the adjacent contact rings are electrically isolated through the insulating rings.
In a preferred embodiment of the invention, the nonmagnetic drill rod comprises a contact rod body, a butt joint section arranged at one end of the contact rod body and a mounting end arranged at the other end of the contact rod body, wherein the contact rod body, the butt joint section and the mounting end are coaxially arranged; the butt joint end can be embedded into the nonmagnetic rod sleeve in a connecting mode, a concave installation ring groove is formed between the nonmagnetic rod sleeve assembled on the butt joint section and the installation end and the contact rod body, and the dielectric body is sleeved outside the installation ring groove; an inner stepped hole is formed in the inner position of the nonmagnetic drill rod, and a ceramic tube is arranged in the inner stepped hole.
Further, an equipment installation groove in butt joint communication with external equipment is formed in the end part of the installation end. And the periphery of the installation end is also provided with a filter screen groove communicated with the equipment installation groove, and the filter screen groove is used for installing a filter screen. The setting of filter screen is convenient for reduce the particulate matter in the mud and gets into inside the product, plays the effect of assisting realizing mud circulation promptly, and the inside and outside pressure balance of protection no magnetism drilling rod simultaneously.
Specifically, the outer surface of the nonmagnetic drill rod is provided with a convex hull structure for enhancing the external bearing capacity and the axial limiting function of the nonmagnetic drill rod; the external thread is arranged on the external surface of the upper part of the nonmagnetic drill rod, so that the nonmagnetic drill rod is convenient to assemble with the nonmagnetic rod sleeve. The ceramic tube is arranged inside the nonmagnetic drill rod, so that structural deformation caused by flushing of slurry on the inner wall of the nonmagnetic drill rod can be prevented, and meanwhile, the internal bearing capacity of the electric signal transmission position of the nonmagnetic drill rod is enhanced. The nonmagnetic drill rod is coaxially and threadedly connected with the nonmagnetic rod sleeve. The plurality of groups of sealing rings are respectively arranged in corresponding sealing grooves arranged on the plurality of contact rings, the nonmagnetic drill rod and the nonmagnetic rod sleeve, so that the sealing among the contact rings, the nonmagnetic drill rod and the nonmagnetic rod sleeve is realized, and the nonmagnetic rod sleeve, the contact rings and the nonmagnetic drill rod are electrically isolated by the insulating rings to realize electric insulation.
The nonmagnetic drill rod is internally provided with a threading hole with a bevel hole for orderly wiring, and the lower part of the threading hole is provided with a first mounting hole for placing a multi-core pressure-bearing connector assembly and a fixed ring; and a second mounting hole is formed in the outer surface of the nonmagnetic drill rod and used for mounting the pin. The multi-core pressure-bearing connector assembly is arranged in an inner mounting hole I of the mounting end of the nonmagnetic drill rod, a threading hole is formed in the nonmagnetic drill rod, one end of the threading hole is communicated with the mounting hole I, the other end of the threading hole is communicated with the mounting ring groove, and a cable of the multi-core pressure-bearing connector assembly is welded with the corresponding contact ring through the threading hole of the nonmagnetic drill rod, a wire hole II of the insulating ring and a wire passing hole I of the contact ring respectively. Further, the multi-core pressure-bearing connector assembly is assembled inside the mounting end of the non-magnetic drill rod, a plurality of groups of cables of the multi-core pressure-bearing connector assembly are respectively welded in the first wire through holes of the contact rings, the cables pass through the insulating rings and the second wire through holes of the insulating rings, the lengths of the plurality of groups of cables are distributed in a stepped mode, and the length difference of the cables is equal to the distance between welding spots on the adjacent contact rings. Specifically, the mounting structure of the pin is used for limiting and fixing the dielectric body, and simultaneously is helpful for preventing radial rotation of the dielectric body.
The non-magnetic drill rod, the plurality of contact rings and the plurality of insulating rings are fixed through key position matching, the plurality of contact coils are assembled to the contact rings and the non-magnetic rod sleeve, and the plurality of rubber rings are assembled to the insulating rings.
When the sealing device is used, the male wet electric connector is sealed and pressure-bearing with the female wet electric connector through a plurality of groups of sealing rings and check rings on the nonmagnetic drill rod and the nonmagnetic rod sleeve; when the male wet electric connector is in butt joint with the female wet electric connector, the male wet electric connector can rotate along the axial direction.
In a preferred embodiment of the invention, the nonmagnetic rod sleeve is cylindrical, the outer surface is provided with a first groove, a second groove, a contact ring groove and a third groove, the first groove and the second groove are used for installing the first sealing ring and the check ring, the contact ring groove is used for installing the contact spring coil, and the fourth groove is used for installing the third sealing ring; and an internal thread is arranged in a groove in the nonmagnetic rod sleeve, so that the nonmagnetic rod sleeve is convenient to be screwed and assembled with the nonmagnetic rod.
In a preferred embodiment of the invention, a plurality of sealing grooves and at least one convex key are arranged outside the contact ring; the inner wall of the contact ring is provided with a plurality of first wire through holes; the male key of the contact ring can be assembled and butted with the insulating ring. Specifically, the plurality of sealing grooves arranged on the outer surface of the contact ring comprise a first sealing groove and a second sealing groove, the outer surface of the contact ring is also provided with a groove and a convex key, the first sealing groove and the second sealing groove are used for installing a third sealing ring, the groove is used for installing a contact spring coil, and the convex key is used for being assembled with a key groove of the insulation ring in a matching way; the inner wall of the contact ring is provided with a plurality of groups of first wire through holes, the first wire through holes adopt U-shaped slotted holes, and the first wire through holes are used for welding wires or wire through.
In a preferred embodiment of the invention, the outer surface of the insulating ring is provided with a first groove for installing the rubber ring, the inner surface of the insulating ring is provided with a second groove, and the second groove can be assembled and butted with the convex key of the contact ring. Specifically, the insulating ring is tubular structure, and the surface is provided with the recess first that is used for installing the rubber circle, and the inboard of two terminal surfaces of insulating ring is equipped with annular step hole, is provided with recess second on the annular step hole at both ends respectively, and is provided with the caulking groove between the recess second that the interval set up. The second groove is used for being assembled with the convex key of the contact ring in a matched manner; and a second wire through hole is formed in the inner wall of the insulating ring and is used for welding a wire or passing the wire.
In a preferred embodiment of the invention, the contact spring coil comprises a support ring and a coil spring arranged outside the support ring. In particular, the coil spring includes a plurality of coils of continuous oval configuration. The single spring coils are arranged in an inclined spring coil mode and are provided with a certain inclination angle, so that the spring coils can be compressed; the inside of the inclined spring is penetrated with a supporting ring with an annular structure, and one quarter to one half of a circle formed by the supporting ring are overlapped; or/and the periphery of the rubber ring is provided with a convex hull structure.
In a preferred embodiment of the present invention, the method for assembling the coaxial male wet electrical connector operating in a strong heat and humidity resistant environment comprises: embedding the multi-core pressure-bearing connector assembly into a non-magnetic drill rod, and enabling a cable led out of the multi-core pressure-bearing connector assembly to pass through a threading hole of the non-magnetic drill rod; sleeving the medium body outside the contact rod body of the non-magnetic drill rod; welding a cable led out of the multi-core pressure-bearing connector assembly with the inner side of a corresponding contact ring; a plurality of groups of contact rings sleeved with contact spring coils and insulating rings sleeved with sealing rings are assembled and sleeved outside a dielectric body of the nonmagnetic drill rod; the non-magnetic drill rod and the non-magnetic drill rod are sleeved and screwed; the contact ring and the insulating ring are locked on the nonmagnetic drill rod.
In a preferred embodiment of the present invention, the method for using the coaxial male wet electrical connector operating in a strong heat and humidity resistant environment comprises: when the coaxial male wet electric connector is in butt joint with the corresponding female wet electric connector, the first sealing ring and the check ring on the nonmagnetic rod sleeve are firstly in contact with the inner cavity wall of the female wet electric connector, the rubber ring assembled on the insulating ring is sequentially in contact with the inner cavity wall of the female wet electric connector along with the increase of the butt joint length, and finally the first sealing ring and the check ring on the nonmagnetic drill rod are in contact with the inner cavity wall of the female wet electric connector, so that the external liquid cannot be in butt joint and sealed, the butt joint pressure bearing and sealing are realized, and the assembled rubber ring on the insulating ring divides the contact ring into a plurality of independent sealing pressure bearing cavities; the cable of the multi-core pressure-bearing connector assembly is electrically connected with the corresponding contact ring through the threading hole of the nonmagnetic drill rod, the second wire hole of the insulating ring and the first wire hole of the contact ring respectively; the contact spring coils sleeved on the contact rings can be electrically connected with the butted female wet electric connector.
The invention solves the defects existing in the background technology, and has the beneficial effects that:
the coaxial male wet electric connector working in a strong heat and humidity resistant environment disclosed by the invention can meet the working requirements of long-term high temperature resistance, high pressure bearing, good sealing performance and good insulating performance of the electric connector in a slurry type wet environment.
1. According to the invention, through the coaxial assembly of the contact rings, the insulating rings, the nonmagnetic drill rod and the nonmagnetic rod sleeve, the free rotation can be realized after the electric connector is in butt joint with the matched female wet electric connector.
2. The invention realizes the effective transmission of signals of the electric connector through the electric connection of the multi-core pressure-bearing connector assembly, the plurality of contact rings and the plurality of contact spring coils, and realizes the internal and external insulation functions of the connector through the dielectric body, the insulation rings and the rubber rings.
3. The contact spring is sleeved on the contact ring, so that the problem that the contact ring and the contact ring of the female wet connector handle metal collision due to coaxial deviation of assembly of the contact ring is avoided when the contact ring is in butt joint with the female wet connector;
4. when the coaxial male wet electric connector is in butt joint with the corresponding female wet electric connector, the first sealing ring and the check ring on the nonmagnetic rod sleeve are firstly in contact with the inner cavity wall of the female wet electric connector, the rubber ring assembled on the insulating ring is sequentially in contact with the inner cavity wall of the female wet electric connector along with the increase of the butt joint length, and finally the first sealing ring and the check ring on the nonmagnetic drill rod are in contact with the inner cavity wall of the female wet electric connector, so that the butt joint sealing of external liquid can not be realized, the butt joint bearing and sealing are realized, and the assembled rubber ring on the insulating ring divides the contact ring into a plurality of independent sealing bearing cavities.
5. After the contact inclined spring arranged on the non-magnetic rod sleeve is inserted with the male and female electric wet connectors, the electric communication between the structural components is improved, and the functions of grounding and having the same potential are achieved. The structural arrangement of the coaxial male wet electric connector enables the overall bearing capacity of the electric connector to reach 140MPa, the temperature resistance to reach 175 ℃, and the performance requirement of the electric connector in a slurry environment is met.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic cross-sectional view of a coaxial male wet electrical connector operating in a strong heat and moisture resistant environment in accordance with a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of an isometric view of a coaxial male wet electrical connector operating in a strong thermal and moisture resistant environment in accordance with a preferred embodiment of the present invention;
FIG. 3 is a schematic diagram of an isometric view of a nonmagnetic sleeve and nonmagnetic drill pipe in a preferred embodiment of the invention in a disassembled state;
FIG. 4 is a schematic cross-sectional view of a nonmagnetic bar sleeve in accordance with the preferred embodiment of the invention;
FIG. 5 is a schematic cross-sectional view of a nonmagnetic drill rod in a preferred embodiment of the invention;
FIG. 6 is a schematic cross-sectional view of a contact ring in accordance with a preferred embodiment of the present invention;
FIG. 7 is a schematic side view of a contact ring in accordance with a preferred embodiment of the present invention;
fig. 8 is a schematic cross-sectional structure of an insulating ring in a preferred embodiment of the present invention;
FIG. 9 is a schematic side view of an insulating ring in accordance with a preferred embodiment of the present invention;
FIG. 10 is a schematic elevational view of the contact spring coil in the preferred embodiment of the present invention;
FIG. 11 is a schematic side view of a rubber ring in accordance with a preferred embodiment of the present invention;
in the figure: a-coaxial male wet electric connector, 1-non-magnetic rod sleeve, 101-groove I, 102-groove II, 103-contact ring groove, 104-groove III, 105-internal thread, 2-non-magnetic drill rod, 201-seal groove a, 202-seal groove b, 203-seal groove c, 204-seal groove d, 205-convex hull structure I, 206-external thread, 207-threading hole, 208-mounting hole I, 209-internal step hole, 210-mounting hole II, 3-contact ring, 301-seal groove I, 302-seal groove II, 303-groove, 304-convex key, 305-middle position, 306-via hole I, 4-insulating ring, 401-groove I, 402-groove II, 403-key slot, 404-via hole II, 5-contact spring coil, 501-inclined spring, 502-support ring, 6-rubber ring, 601-convex hull structure II, 7-dielectric body, 8-multicore pressure-bearing connector assembly; 9-sealing ring I, 10-retainer ring, 11-sealing ring II, 12-sealing ring III, 13-sealing ring IV, 14-fixed ring, 15-ceramic tube and 16-pin.
Detailed Description
The invention will now be described in further detail with reference to the drawings and examples, which are simplified schematic illustrations of the basic structure of the invention, which are presented only by way of illustration, and thus show only the structures that are relevant to the invention.
It should be noted that, if a directional indication (such as up, down, bottom, top, etc.) is involved in the embodiment of the present invention, the directional indication is merely used to explain the relative positional relationship between the components, the movement situation, etc. in a certain specific posture, and if the specific posture is changed, the directional indication is correspondingly changed. The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. Unless specifically stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 11, a coaxial male wet electrical connector working in a strong heat and humidity resistant environment in the embodiment of the invention comprises a non-magnetic rod sleeve 1 and a non-magnetic drill rod 2 in butt joint with the non-magnetic rod sleeve 1; the nonmagnetic drill rod 2 is sleeved with a plurality of contact rings 3 and insulating rings 4, and a dielectric body 7 is arranged between the contact rings 3 and the insulating rings 4 and between the nonmagnetic drill rod 2; and the nonmagnetic drill rod 2 is internally provided with a multi-core pressure-bearing connector assembly 8, and the multi-core pressure-bearing connector assembly 8 is respectively and electrically connected with the contact ring 3 through cables. An inner stepped hole 209 is arranged in the middle position inside the nonmagnetic drill rod 2, and a ceramic tube 15 is arranged in the inner stepped hole 209. The ceramic tube 15 is arranged inside the nonmagnetic drill rod 2, so that structural deformation caused by flushing of slurry on the inner wall of the nonmagnetic drill rod 2 can be prevented, and meanwhile, the internal bearing capacity of the electric signal transmission position of the nonmagnetic drill rod 2 is enhanced. The multi-core pressure-bearing connector assembly 8 is formed by welding a multi-core injection-molded pressure-bearing connector and a plurality of groups of cables. The cable is selected to be a high-temperature-resistant wire, and the multi-core injection-molded pressure-bearing connector is in sealing fit with the first mounting hole 208 of the nonmagnetic drill rod 2 through the sealing ring with the O-shaped structure to realize pressure-bearing sealing.
Specifically, as shown in fig. 1-3 and 5, the nonmagnetic drill rod 2 is a hollow pipe body structure and comprises a contact rod body, a butt joint end arranged at one end of the contact rod body and a mounting end arranged at the other end of the contact rod body, wherein the contact rod body, the butt joint end and the mounting end are coaxially arranged; the non-magnetic rod sleeve 1 assembled on the butt joint section, the installation end and the contact rod body form an inward concave installation ring groove, and a dielectric body 7 is sleeved outside the installation ring groove. The butt joint end can be embedded into the nonmagnetic rod sleeve 1, a step which is in limit abutting with the inner wall of the nonmagnetic rod sleeve 1 is arranged on the butt joint end at the upper part of the nonmagnetic rod 2, and an external thread 206 is arranged on the outer surface from the step on the butt joint end to the end part of the butt joint end, so that the nonmagnetic rod sleeve 1 can be assembled conveniently in a screwing way. A sealing groove a201 is arranged between the step on the butt joint end and the contact rod body, and a sealing ring IV 13 is embedded in the sealing groove a 201.
A dielectric body 7 is sleeved outside a section of the contact rod body close to the butt joint end, and a plurality of groups of contact rings 3 and insulating rings 4 are sleeved outside the dielectric body 7; and an insulating ring 4 is embedded between the adjacent contact rings 3, and the adjacent contact rings 3 realize electrical isolation through the insulating ring 4. The outside of the contact ring 3 is provided with a plurality of sealing grooves and at least one convex key 304; the inner wall of the contact ring 3 is provided with a plurality of first wire through holes 306; the male key 304 of the contact ring 3 can be assembled in abutment with the key slot 403 of the insulating ring 4. The first via 306 is a plurality of sets of semicircular vias.
Specifically, as shown in fig. 1 to 3, 5 to 7 and 10, the plurality of sealing grooves arranged on the outer surface of the contact ring 3 include a first sealing groove 301 and a second sealing groove 302, the outer surface of the contact ring 3 is further provided with a groove 303 and a convex key 304, and the first sealing groove 301 and the second sealing groove 302 are used for installing a third sealing ring 12, so that a double sealing effect is achieved. The groove 303 is used for installing the contact spring coil 5, realizing the function of electric connection with external signals and the function of the fixed contact ring 3, and realizing the function of electric connection with external signals and the function of the fixed contact ring 3. The convex key 304 is used for matching and assembling with the key groove 403 of the insulating ring 4; as shown in fig. 2 and 7, the inner wall of the contact ring 3 is provided with a plurality of groups of first wire through holes 306, the first wire through holes 306 are U-shaped slots, and the first wire through holes 306 are used for welding wires or wire through. As shown in fig. 1-3, 5-7 and 10, the contact spring coil 5 includes a support ring 502 to cover the outer inclined spring 501 of the support ring 502. The coil spring 501 includes a plurality of coils of continuous oval configuration. The single spring coils are arranged in an inclined spring coil mode and are provided with a certain inclination angle, so that the spring coils can be compressed; the supporting ring 502 with annular structure is penetrated in the inclined spring 501, and the circle formed by the supporting ring 502 is overlapped from one quarter to one half. The contact spring coil 5 can realize the electric signal transmission of the female wet connector which is butted with the contact spring coil. The contact rings 3 are respectively connected with the multi-core pressure-bearing connector assembly 8 through welded cables to realize the signal transmission function, wherein welding spots at the ends of the contact rings 3 are arranged at the middle position 305 of the inner wall of the contact rings 3. Preferably, in the present embodiment, the number of the contact rings 3 is five, and the number of the contact coils 5 is five. The contact spring coil 5 is sleeved on the contact ring 3, and the outer diameter of the contact ring 3 is slightly smaller than that of the insulating ring 4, so that when the contact ring 3 is in butt joint with a female wet electric connector, the problem of metal collision at the contact part of the contact ring 3 and the female wet electric connector due to coaxial assembly deviation is solved.
Specifically, as shown in fig. 1-4, 8, 9 and 11, the insulating ring 4 has a tubular structure, and a groove 401 for installing the rubber ring 6 is formed on the outer surface of the insulating ring 4, so as to realize the functions of insulating and fixing the insulating ring 4. Annular step holes are formed in the inner sides of the two end faces of the insulating ring 4, grooves two 402 are formed in the annular step holes at the two ends respectively, and caulking grooves 403 are formed between the grooves two 402 which are arranged at intervals. The arrangement of the grooves II 402 arranged in the two ends of each insulating ring 4 on the annular step surface is in 180-degree included angle dislocation distribution. The second groove 402 is used for matching and assembling with the convex key 304 of the contact ring 3; the inner wall of the insulating ring 4 is provided with a second wire through hole 404, and the second wire through hole 404 is used for welding a wire or passing the wire. As shown in fig. 2 and 9, the second via 404 is a groove-shaped via. As shown in fig. 1, 2 and 11, the outer periphery of the rubber ring 6 is provided with a convex hull structure 601. The nonmagnetic drill rod 2, the contact rings 3 and the insulating rings 4 are fixed through key position matching, the contact coils 5 are assembled to the contact rings 3 and the nonmagnetic rod sleeve 1, and the rubber rings 6 are assembled to the insulating rings 4. Preferably, in this embodiment, the number of insulating rings 4 is six, and the number of rubber rings 6 is six.
Specifically, as shown in fig. 1-3 and 5, a sealing groove b202, a sealing groove c203 and a sealing groove d204 are arranged outside one side, close to the contact rod body, of the installation end of the non-magnetic drill rod 2, the sealing groove b202 is used for a sealing ring III 12, and a mounting sealing ring I9 and a check ring 10 are arranged in the sealing groove c203 and the sealing groove d 204. The outer surface of the nonmagnetic drill rod 2 is also provided with a convex hull structure 205 for enhancing the external bearing capacity and the axial limiting function of the nonmagnetic drill rod 2.
As shown in fig. 1-3 and 5, a threading hole 207 is further formed in the installation end of the non-magnetic drill rod 2 and used for orderly wiring, and a first installation hole 208 is formed at the lower part of the threading hole 207 and used for placing the multi-core pressure-bearing connector assembly 8 and the fixed ring 14; the multicore pressure-bearing connector assembly 8 is arranged in an inner mounting hole one 208 of the mounting end of the nonmagnetic drill rod 2 through the fixing ring 14, a threading hole 207 is formed in the nonmagnetic drill rod 2, one end of the threading hole 207 is communicated with the mounting hole one 208, the other end of the threading hole 207 is communicated with the mounting ring groove, and a bevel hole is formed in one end of the threading hole 207 communicated with the mounting ring groove. The contact rod body of the nonmagnetic drill rod 2 is also provided with a second mounting hole 210 at one end close to the mounting end, and the second mounting hole 210 is used for mounting the pin 16. The cables of the multi-core pressure-bearing connector assembly 8 are respectively welded with the corresponding contact rings 3 through the non-magnetic drill rod threading holes, the second wire holes 404 of the insulation rings 4 and the first wire holes 306 of the contact rings 3. The multiple groups of cables of the multi-core pressure-bearing connector assembly 8 are respectively welded in the first wire through holes 306 of the contact ring 3, the cables pass through the insulating ring 4 and the second wire through holes 404 of the insulating ring 4, the lengths of the multiple groups of cables are distributed in a stepped mode, and the length difference of the cables is equal to the distance between welding spots on the adjacent contact rings 3. Further, the multi-core pressure-bearing connector assembly 8 comprises an injection molding body embedded in the first inner mounting hole 208, a conductor is embedded in the injection molding body, one end of the conductor is electrically connected with the contact ring 3 through a cable, and the other end of the conductor can be in butt joint combination with external equipment installed on the non-magnetic drill rod 2.
As shown in fig. 1-4, the nonmagnetic rod sleeve 1 is cylindrical, the outer surface is provided with a first groove 101, a second groove 102, a contact ring groove 103 and a third groove 104, the first groove 101 and the second groove 102 are used for installing a first sealing ring 9 and a check ring 10, the contact ring groove 103 is used for installing a contact spring coil 5, and the fourth groove 104 is used for installing a third sealing ring 12; an internal thread 105 is arranged in a groove inside the nonmagnetic rod sleeve 1, so that the nonmagnetic rod sleeve is convenient to be screwed and assembled with the nonmagnetic rod 2.
When the connector is used, the male wet electric connector A realizes the sealing and bearing with the female wet electric connector through a plurality of groups of sealing rings and check rings on the nonmagnetic drill rod 2 and the nonmagnetic rod sleeve 1; when the male wet electric connector A is in butt joint with the female wet electric connector, the male wet electric connector A can rotate along the axial direction. Specifically, the nonmagnetic drill rod 2 is coaxially and threadedly connected with the nonmagnetic rod sleeve 1. The plurality of groups of sealing rings are respectively arranged in corresponding sealing grooves arranged on the plurality of contact rings 3, the nonmagnetic drill rod 2 and the nonmagnetic rod sleeve 1, so that the sealing among the contact rings 3, the nonmagnetic drill rod 2 and the nonmagnetic rod sleeve 1 is realized, and the nonmagnetic rod sleeve 1, the contact rings 3 and the nonmagnetic drill rod 2 are electrically isolated by the insulating ring 4 so as to realize electric insulation.
Example two
As shown in fig. 1 to 11, in a first embodiment, a method for assembling a coaxial male wet electrical connector operating in a strong heat and humidity resistant environment includes: embedding the multi-core pressure-bearing connector assembly 8 in the nonmagnetic drill rod 2, and enabling a cable led out from the multi-core pressure-bearing connector assembly 8 to pass through a threading hole 208 of the nonmagnetic drill rod 2; the dielectric body 7 is sleeved outside the contact rod body of the non-magnetic drill rod 2; welding the cables led out from the multi-core pressure-bearing connector assembly 8 with the inner sides of the corresponding contact rings 3; a plurality of groups of contact rings 3 sleeved with contact spring coils 5 and insulating rings 4 sleeved with sealing rings are assembled and sleeved outside a medium body 7 of the nonmagnetic drill rod 2; the nonmagnetic drill rod 2 and the nonmagnetic rod sleeve 1 are connected and combined in a screwing way; the contact ring 3 and the insulating ring 4 are locked on the non-magnetic drill rod 2.
Example III
As shown in fig. 1 to 11, the method for using the coaxial male wet electrical connector in the strong heat and humidity resistant environment according to the first embodiment: when the coaxial male wet electric connector is in butt joint with the corresponding female wet electric connector, the first sealing ring 9 and the check ring 10 on the nonmagnetic rod sleeve 2 are in contact with the inner cavity wall of the female wet electric connector, the rubber ring 6 assembled on the insulating ring 4 is in contact with the inner cavity wall of the female wet electric connector in sequence along with the increase of the butt joint length, and finally the first sealing ring 9 and the check ring 10 on the nonmagnetic rod are in contact with the inner cavity wall of the female wet electric connector, so that the external liquid cannot be in butt joint and sealed, the butt joint pressure bearing and sealing are realized, and the assembled rubber ring 6 on the insulating ring 4 divides the contact ring 3 into a plurality of independent sealing pressure bearing cavities; the cables of the multi-core pressure-bearing connector assembly 8 are respectively and electrically connected with the corresponding contact rings 3 through the threading holes 207 of the non-magnetic drill rod 2, the second wire holes 404 of the insulating rings 4 and the first wire holes 306 of the contact rings 3; the contact spring coils 5 sleeved on the contact ring 3 can be electrically connected with the butted female wet electric connector.
Working principle:
as shown in fig. 1 to 11, signal transmission of the electrical connector is realized through electrical connection of the multi-core pressure-bearing connector assembly 8, the plurality of contact rings 3 and the plurality of contact coils 5, and an inner and outer insulation function of the connector is realized through the dielectric body 7, the insulation ring 4 and the rubber ring 6. The multiple bearing and sealing functions of the connector are realized through the cooperation of the nonmagnetic drill rod 2, the nonmagnetic rod sleeve 1, the plurality of contact rings 5, the plurality of insulating rings 4 and the multi-core bearing connector 8, so that the integral bearing capacity of the coaxial male wet electric connector working in a strong heat and humidity resistant environment can reach 140MPa, and the temperature resistant capacity can reach 175 ℃. The realization mode of multiple sealing and bearing of the coaxial male wet electric connector working in the strong heat and humidity resistant environment is as follows: the first sealing path is formed by combining a first sealing ring 9 on the nonmagnetic rod sleeve 1 with a check ring 10 and a plurality of contact rings 3. The second sealing path is formed by the internal thread 105 of the nonmagnetic rod sleeve 1, the external thread 206 of the nonmagnetic drill rod 2, the fourth sealing ring 13 of the nonmagnetic drill rod 2 and the third sealing rings 12 on the plurality of contact rings 3. The sealing ring I9 and the check ring 10 at the lower part of the nonmagnetic drill rod 2 are doubly combined to a plurality of contact rings 3 to form a sealing path III. The multi-core pressure-bearing connector assembly 8 arranged at the tail step position of the nonmagnetic drill rod 2 is connected with the contact ring 3 to form a sealing path IV. The slurry liquid can not enter the contact ring through the four sealing paths.
When in use, the male wet electric connector A realizes the sealing and bearing with the female wet electric connector through the non-magnetic drill rod 2 and the multi-group sealing rings I9 and the check rings 10 on the non-magnetic drill rod sleeve 1, when the male wet electric connector A is in butt joint with the female wet electric connector, the male wet electric connector A can rotate along the axial direction; the two sealing rings 9 and the check ring 10 on the non-magnetic rod sleeve 1 of the male wet electric connector A are contacted with the sealing surface of the female wet electric connector before the slurry and the liquid in the female wet electric connector are continuously pushed out of the female wet electric connector, and the rubber ring 6 on the insulating ring 4 plays a role in sealing between single contact rings and has the function of cleaning the slurry in the female wet electric connector. And after the female wet electric connector is in butt joint with the male wet electric connector A, the sealing of the butt joint tail part is realized by the sealing ring I9 and the check ring 10 on the nonmagnetic drill rod 2. The sealing ring I9 and the check ring 10 on the non-magnetic rod sleeve 2 realize the sealing of the butt joint top. Sealing between the nonmagnetic drill rod 2 and the nonmagnetic rod sleeve 1 is realized by the sealing ring III 12 and the sealing ring IV 13, poor insulation caused by mud inside the nonmagnetic drill rod 2 entering between the butted female wet electric connector and the butted male wet electric connector A is avoided, and meanwhile, the sealing ring V with an O-shaped structure is also arranged on the connector of the multicore pressure-bearing connector assembly 8, so that sealing between the multicore pressure-bearing connector assembly 8 and the nonmagnetic drill rod 2 is realized.
The above-described preferred embodiments according to the present invention are intended to suggest that, from the above description, various changes and modifications can be made by the person skilled in the art without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (9)
1. The coaxial male wet electric connector working in a strong heat and humidity resistant environment comprises a non-magnetic rod sleeve (1) and a non-magnetic drill rod (2) in butt joint with the non-magnetic rod sleeve (1); the method is characterized in that: the non-magnetic drill rod (2) is sleeved with a plurality of contact rings (3) and insulating rings (4), and a dielectric body (7) is further arranged between the contact rings (3) and the insulating rings (4) and the non-magnetic drill rod (2); the non-magnetic drill rod (2) is internally provided with a multi-core pressure-bearing connector assembly (8), and the multi-core pressure-bearing connector assembly (8) is electrically connected with the contact ring (3) through cables respectively;
a plurality of check rings (10) or/and sealing rings are arranged outside the butt joint of the nonmagnetic rod sleeve (1) and the nonmagnetic drill rod (2); the outside of the non-magnetic drill rod (2) is provided with a plurality of check rings (10) or/and sealing rings.
2. The coaxial male wet electrical connector operating in a strong thermal and wet resistant environment of claim 1, wherein: the non-magnetic drill rod (2) is sleeved with a plurality of contact rings (3) and insulating rings (4), the insulating rings (4) are embedded between the adjacent contact rings (3), and the adjacent contact rings (3) are electrically isolated through the insulating rings (4).
3. The coaxial male wet electrical connector operating in a strong thermal and wet resistant environment of claim 1, wherein: the non-magnetic drill rod (2) comprises a contact rod body, a butt joint section arranged at one end of the contact rod body and a mounting end arranged at the other end of the contact rod body, wherein the contact rod body, the butt joint section and the mounting end are coaxially arranged;
the butt joint section can be embedded into the nonmagnetic rod sleeve (1), an inwards concave mounting ring groove is formed between the nonmagnetic rod sleeve (1) assembled on the butt joint section, the mounting end and the contact rod body, and the medium body (7) is sleeved outside the mounting ring groove; an inner stepped hole (209) is formed in the inner position of the nonmagnetic drill rod (2), and a ceramic tube (15) is arranged in the inner stepped hole (209).
4. The coaxial male wet electrical connector operating in a strong thermal and wet resistant environment of claim 3, wherein: the non-magnetic rod sleeve (1) is cylindrical, the outer surface of the non-magnetic rod sleeve is provided with a first groove (101), a second groove (102), a contact ring groove (103) and a third groove (104), the first groove (101) and the second groove (102) are provided with a first sealing ring (9) and a check ring (10), the contact ring groove (103) is provided with a contact spring coil (5), and the fourth groove (104) is provided with a third sealing ring (12); an internal thread (105) is arranged in a groove in the nonmagnetic rod sleeve (1) so as to be convenient for screwing and assembling with the nonmagnetic drill rod (2).
5. The coaxial male wet electrical connector operating in a strong thermal and wet resistant environment of claim 1, wherein: a plurality of sealing grooves and at least one convex key (304) are arranged outside the contact ring (3); the inner wall of the contact ring (3) is provided with a plurality of first wire through holes (306);
the convex key (304) of the contact ring (3) can be assembled and butted with the insulating ring (4).
6. The coaxial male wet electrical connector operating in a strong thermal and wet resistant environment of claim 1, wherein: the outer surface of the insulating ring (4) is provided with a first groove (401) for installing the rubber ring (6), the inner surface of the insulating ring (4) is provided with a second groove (402), and the second groove (402) can be assembled and butted with the convex key (304) of the contact ring (3).
7. The coaxial male wet electrical connector operating in a strong heat and humidity resistant environment of claim 2, wherein: the contact spring coil (5) comprises a support coil (502) and a bevel spring (501) arranged outside the support coil (502);
or/and, the periphery of the rubber ring (6) is provided with a convex hull structure (601).
8. The method for assembling a coaxial male wet electrical connector operating in a strong heat and humidity resistant environment according to any one of claims 1 to 7, wherein:
embedding the multi-core pressure-bearing connector assembly (8) in the nonmagnetic drill rod (2), and enabling a cable led out from the multi-core pressure-bearing connector assembly (8) to pass through a threading hole (208) of the nonmagnetic drill rod (2);
the dielectric body (7) is sleeved outside the contact rod body of the non-magnetic drill rod (2);
welding a cable led out of the multi-core pressure-bearing connector assembly (8) with the inner side of a corresponding contact ring (3);
a plurality of groups of contact rings (3) sleeved with contact spring coils (5) and insulating rings (4) sleeved with sealing rings are assembled and sleeved outside a medium body (7) of the non-magnetic drill rod (2);
the non-magnetic drill rod (2) and the non-magnetic rod sleeve (1) are connected in a screwing way; the contact ring (3) and the insulating ring (4) are locked on the nonmagnetic drill rod (2).
9. The method for using the coaxial male wet electrical connector working in a strong heat and humidity resistant environment according to any one of claims 1 to 7, wherein the method comprises the following steps:
when the coaxial male wet electric connector is in butt joint with a corresponding female wet electric connector, a first sealing ring (9) and a check ring (10) on the non-magnetic rod sleeve (2) are in contact with the inner cavity wall of the female wet electric connector, along with the increase of the butt joint length, a rubber ring (6) assembled on the insulating ring (4) is in contact with the inner cavity wall of the female wet electric connector in sequence, and finally the first sealing ring (9) and the check ring (10) on the non-magnetic rod are in contact with the inner cavity wall of the female wet electric connector, so that the external liquid cannot be in butt joint and sealed, the butt joint pressure bearing and sealing are realized, and the assembled rubber ring (6) on the insulating ring (4) divides the contact ring (3) into a plurality of independent sealing pressure bearing cavities;
the cables of the multi-core pressure-bearing connector assembly (8) are respectively and electrically connected with the corresponding contact rings (3) through the threading holes (207) of the non-magnetic drill rod (2), the second wire holes (404) of the insulating rings (4) and the first wire holes (306) of the contact rings (3); the contact spring coils (5) sleeved on the contact ring (3) can be electrically connected with the butted female wet electric connector.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111225967.6A CN113964578B (en) | 2021-10-21 | 2021-10-21 | Coaxial male wet electric connector working in strong heat and humidity resistant environment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111225967.6A CN113964578B (en) | 2021-10-21 | 2021-10-21 | Coaxial male wet electric connector working in strong heat and humidity resistant environment |
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| CN113964578A CN113964578A (en) | 2022-01-21 |
| CN113964578B true CN113964578B (en) | 2023-11-28 |
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| CN115603101B (en) * | 2022-12-15 | 2023-02-28 | 苏州华旃航天电器有限公司 | Electric connector assembly with sealing function |
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| US6123561A (en) * | 1998-07-14 | 2000-09-26 | Aps Technology, Inc. | Electrical coupling for a multisection conduit such as a drill pipe |
| CN104852205A (en) * | 2015-06-09 | 2015-08-19 | 苏州华旃航天电器有限公司 | Electric connector with temperature-resistant voltage-bearing structure |
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| CN112103741A (en) * | 2020-07-24 | 2020-12-18 | 西安电子科技大学 | Coaxial multi-core high-temperature-resistant high-pressure-resistant sealing connector |
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2021
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| US6123561A (en) * | 1998-07-14 | 2000-09-26 | Aps Technology, Inc. | Electrical coupling for a multisection conduit such as a drill pipe |
| CN104852205A (en) * | 2015-06-09 | 2015-08-19 | 苏州华旃航天电器有限公司 | Electric connector with temperature-resistant voltage-bearing structure |
| CN109904687A (en) * | 2019-02-18 | 2019-06-18 | 苏州华旃航天电器有限公司 | Novel fire resistant, high-pressure water vapor sealing N-K type terminate cable radio frequency coaxial connector |
| CN112103741A (en) * | 2020-07-24 | 2020-12-18 | 西安电子科技大学 | Coaxial multi-core high-temperature-resistant high-pressure-resistant sealing connector |
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