Pluggable multi-core strip wire temperature-resistant pressure-bearing assembly structure

Abstract

The utility model relates to a plug-in type multi-core strip wire temperature-resistant pressure-bearing assembly structure, which comprises a ceramic sintering sealing connector, a first O-shaped ring, a C-shaped check ring, a mounting shell, a rubber connector, a jack, a second O-shaped ring, a pressure buffering rubber sleeve, a steel wire armored cable core wire, a lower base, a third O-shaped ring and an upper base, the ceramic sintering sealing connector and the rubber connector are in butt joint in a mounting shell cavity, the first O-shaped ring, the second O-shaped ring, the third O-shaped ring and the rubber connector generate elastic deformation, pressure-bearing sealing of a butt joint area is achieved, the temperature-resistant and pressure-bearing performance of a product is achieved, a steel wire armored cable core wire penetrates through a rubber cylinder of the rubber connector, and the steel wire armored cable core wire penetrates through the rubber cylinder of the rubber connector. And the armored cable core wire and the rubber connector are sealed through rubber interference extrusion. The plug-in type multi-core strip line temperature-resistant pressure-bearing assembly structure has the advantages of preventing rotation, being convenient to assemble, improving sealing performance and pressure-bearing performance, improving dielectric strength and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature-resistant and pressure-bearing components for oil drilling, in particular to a pluggable multi-core wire-bearing temperature-resistant and pressure-bearing component structure. Background Art

[0002] At present, with the continuous development of the oil drilling field, wire-armored cables are used to hoist and connect downhole equipment to surface instruments. The maintenance work of such downhole equipment is very important. If the wire-armored cable needs to be pulled out of the ground every time for maintenance and the equipment is pulled out of the well for maintenance, the operation is difficult and costly. This requires the introduction of a temperature-resistant and pressure-bearing component for electrical transfer in the middle and convenient for disassembly as a transition. This component is connected to the wire-armored cable up and down, works in the high-temperature and high-pressure environment downhole, and has to withstand sufficient tensile force while transmitting electrical signals up and down.

[0003] This type of multi-core component is in the form of single-strand cable sealed independently, and mainly has the following three problems: First, the consistency is poor. It is difficult to insert and remove multi-core products, and they cannot be inserted and removed simultaneously. Second, the independent sealing anti-path is single and the sealing performance is poor. Third, in the case of vibration, the independent sealing form will rotate freely along the axis alone, increasing the wear of the contact surface, resulting in poor contact stability and short mechanical life.

[0004] Therefore, we have developed a pluggable multi-core wire-bearing temperature-resistant and pressure-bearing component structure to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a pluggable multi-core wire-bearing temperature-resistant and pressure-bearing component structure to overcome the deficiencies of the prior art, which has the advantages of preventing rotation, facilitating assembly, improving sealing performance and pressure-bearing capacity, and improving dielectric strength.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is: A pluggable multi-core wire-bearing temperature-resistant and pressure-bearing component structure, including a ceramic sintered seal connector, an installation housing, a rubber connector, a pressure-relieving rubber sleeve, a wire-armored cable core wire, an upper base and a lower base. A first flange is provided at the middle position of the ceramic sintered seal connector, and a plurality of pins are provided at one end. The wire-armored cable core wire passes through the lower base and is inserted into the ceramic sintered seal connector through a jack. The outer wall of the lower base and the jack is press-fitted with the inner wall of the rubber connector. The outer walls of the rubber connector and the ceramic sintered seal connector are press-fitted and sealed with the installation housing through a first O-ring. One end of the outer wall of the installation housing is in interference fit with the pressure-relieving rubber sleeve. The outer wall of the upper base is press-fitted and sealed with the jack through a second O-ring and is press-fitted and sealed with one end of the lower base.

[0007] Preferably, a first keyway is provided at one end of the mounting housing, and a second keyway is provided at the other end. A first groove is provided on the inner wall of the mounting housing. The first keyway is plugged with the ceramic sintered sealing connector through a first key, and the rubber connector is plugged with the second keyway.

[0008] Preferably, the first groove is clamped with a C-shaped retaining ring, and the C-shaped retaining ring abuts against the first flange.

[0009] Preferably, a first convex bulge is provided at the ceramic sintered sealing connector near the first flange, and a third groove is provided on the inner wall at one end of the rubber connector. The first convex bulge is clamped with the third groove.

[0010] Preferably, a second convex bulge is further provided at the other end of the mounting housing. A fifth groove is provided at one end of the inner wall of the pressure-relieving rubber sleeve, and a sixth groove is provided at the middle inner wall. The second convex bulge is clamped with the fifth groove.

[0011] Preferably, a vulcanized hoop is provided on the outer wall of the rubber connector, and a plurality of third convex bulges are provided on the outer wall of the vulcanized hoop. The third convex bulge is clamped with the sixth groove.

[0012] Preferably, a wire hoop and a rubber barrel are sequentially provided at one end of the rubber connector, and a second key is provided at the other end. The second key is plugged with the second keyway.

[0013] Preferably, a fourth groove is provided on the outer wall of the jack, and the fourth groove is press-fitted and sealed with the second O-ring.

[0014] Preferably, the lower base is provided with an axial first boss, and a seventh groove is provided at one end.

[0015] Preferably, the upper base is provided with an axial straight hole, and a second boss is provided at one end. A third O-ring is press-fitted and sealed between the second boss and the seventh groove.

[0016] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0017] 1. The pluggable multi-core wire-carrying temperature-resistant and pressure-bearing component structure of the utility model has high-temperature resistance performance. The ceramic sintered sealing connector in the component is a high-temperature and high-pressure resistant unit. The mounting housing, vulcanized hoop and other metals are all made of high-temperature alloy materials. The rubber parts use fluororubber which can withstand high temperatures.

[0018] 2. The pluggable multi-core wire-connected temperature-resistant and pressure-bearing component structure of the present utility model has the convenience of simultaneous plugging and unplugging of multiple cores. The ceramic sintered sealing connector and the mounting housing are prevented from relative rotation through keyway cooperation, and the C-ring stops the ceramic sintered sealing connector to prevent axial movement. The rubber connector and the mounting housing are assembled through keyway guidance for anti-fooling, making the overall plugging and unplugging more convenient.

[0019] 3. The pluggable multi-core wire-connected temperature-resistant and pressure-bearing component structure of the present utility model has strong pressure-bearing capacity for each core wire. One end of the rubber connector extends out with the same number of rubber cylinders as the number of cores. The steel wire armored cable core wires are inserted into the rubber cylinders through a special tooling. The core wires form deformation extrusion with the inner wall of the rubber cylinders to achieve preliminary sealing. At the same time, two wire clamps are sleeved on each rubber cylinder, and a special fixture is used to cause the wire clamps to deform, further increasing the rubber deformation amount and improving the pressure-bearing performance of each core wire.

[0020] 4. The pluggable multi-core wire-connected temperature-resistant and pressure-bearing component structure of the present utility model has multiple pressure-bearing protections in the docking area. One end of the pressure-relieving rubber sleeve is press-fitted with the vulcanized hoop boss on the rubber connector with interference, and the other end is press-fitted with the boss structure on the mounting housing with interference to form a pressure-bearing buffer zone, realizing the first sealing in the docking area. The groove of the rubber connector cooperates with the interference extrusion structure of the convex boss of the ceramic sintered connector to form a second sealing and pressure-bearing barrier, improving the pressure-bearing capacity of the docking area. And there are two O-ring pressure-bearing sealing structures on the outer circumference of the ceramic sintered sealing connector unit, and the connector itself can withstand high temperature and high pressure.

[0021] 5. The pluggable multi-core wire-connected temperature-resistant and pressure-bearing component structure of the present utility model has a higher dielectric strength in the docking area. The second boss increases the creepage distance and the effect of squeezing the O-ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of the pluggable multi-core wire-connected temperature-resistant and pressure-bearing component structure of the present utility model.

[0023] Figure 2 It is a schematic structural diagram of the ceramic sintered sealing connector of the present utility model.

[0024] Figure 3 It is a schematic structural diagram of the mounting housing of the present utility model.

[0025] Figure 4 It is a schematic external structural diagram of the rubber connector of the present utility model.

[0026] Figure 5 It is a schematic internal structural diagram of the rubber connector of the present utility model.

[0027] Figure 6 It is a schematic structural diagram of the vulcanized hoop of the present utility model.

[0028] Figure 7 This is a schematic structural diagram of the jack described in the present utility model.

[0029] Figure 8 This is a schematic structural diagram of the pressure-relieving rubber sleeve described in the present utility model.

[0030] Figure 9 This is a schematic structural diagram of the lower base described in the present utility model.

[0031] Figure 10 This is a schematic structural diagram of the upper base described in the present utility model. Detailed implementation manners

[0032] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] Figures 1 to 10 In a pluggable multi-core wire temperature-resistant and pressure-bearing component structure, it includes a ceramic sintered seal connector 01, an installation housing 4, a rubber connector 5, a pressure-relieving rubber sleeve 8, a steel wire armored cable core wire 9, an upper base 12 and a lower base 10. A first flange 012 is provided at the middle position of the ceramic sintered seal connector 01, and a plurality of pins 014 are provided at one end. The steel wire armored cable core wire 9 passes through the lower base 10 and is inserted into the ceramic sintered seal connector 01 through a jack 6. The outer walls of the lower base 10 and the jack 6 are press-fitted with the inner wall of the rubber connector 5. The outer walls of the rubber connector 5 and the ceramic sintered seal connector 01 are press-fitted and sealed with the installation housing 4 through a first O-ring 2. One end of the outer wall of the installation housing 4 is in interference fit with the pressure-relieving rubber sleeve 8, that is, the pressure-relieving rubber sleeve 8 is installed on the installation housing 4 and the rubber connector 5 with interference to form a set of high-pressure isolation and buffering barriers. The third groove 55 of the rubber connector 5 is installed on the first convex boss 011 of the ceramic sintered seal connector 01 with interference to achieve another pressure-bearing seal in the docking area and improve the pressure-bearing performance of the component. The upper base 12 is press-fitted and sealed with the outer wall of the jack 6 through a second O-ring 7 and is press-fitted and sealed with one end of the lower base 10. The steel wire armored cable core wire 9 is fixedly connected to the steel wire armored cable.

[0034] A first key groove 41 is provided at one end of the installation housing 4, and a second key groove 43 is provided at the other end. A second convex boss 44 is also provided at the other end of the installation housing 4. A first groove 42 is provided on the inner wall of the installation housing 4. The first key groove 41 is inserted into the ceramic sintered seal connector 01 through a first key 013. The first groove 42 is clamped with a C-shaped retaining ring 3, and the C-shaped retaining ring 3 abuts against the first flange 012. The rubber connector 5 is inserted into the second key groove 43 to achieve anti-rotation fixation of the connector. A fifth groove 81 is provided at one end of the inner wall of the pressure-relieving rubber sleeve 8, and a sixth groove 82 is provided at the middle inner wall. The second convex boss 44 is clamped with the fifth groove 81.

[0035] A first convex hull 011 is provided near the first flange 012 of the ceramic sintered sealed connector 01, and a third groove 55 is provided at the inner wall of one end of the rubber connector 5. The first convex hull 011 is clamped with the third groove 55.

[0036] A vulcanized hoop 51 is provided on the outer wall of the rubber connector 5. A plurality of third convex hulls 512 are provided on the outer wall of the vulcanized hoop 51, and a rubber coating groove 511 is provided on the inner wall. The third convex hull 512 is clamped with the sixth groove 82. After the rubber coating groove 511 is filled with fluororubber, it can withstand high pressure.

[0037] A wire hoop 54 and a rubber barrel 52 are successively provided at one end of the rubber connector 5, and a second key 53 is provided at the other end. The second key 53 is inserted into the second key groove 43. A fourth groove 61 is provided on the outer wall of the jack 6. The fourth groove 61 is press-fitted and sealed with the second O-ring 7. Due to the clamping of the wire hoop 54 for each strand of steel wire armored cable core wire, through the overall interference extrusion of the rubber cylinder 52 and the press connection and conduction method at the tail end of the jack 6, the single-strand core wire cannot rotate freely axially and cannot move around. During downhole exploration, the mechanical wear is small under vibration conditions, and the mechanical life is improved.

[0038] The lower base 10 is provided with a first boss 101 in the cylindrical axial direction, and a seventh groove 102 is provided at one end. The first boss 101 is inserted into the straight hole 121 to increase the creepage distance and improve the dielectric performance.

[0039] The upper base 12 is provided with a straight hole 121 in the axial direction, and a second boss 122 is provided at one end. A third O-ring 11 is press-fitted and sealed between the second boss 122 and the seventh groove 102, and the third O-ring 11 is squeezed and sealed.

[0040] Before the connectors are docked, the pressure-relieving rubber sleeve 8 is installed on the vulcanized hoop 51 of the rubber connector 5. The third convex hull 512 of the vulcanized hoop 51 is interference-fitted into the sixth groove 82 of the pressure-relieving rubber sleeve 8. When the rubber connector 5 is docked with the ceramic sintered sealed connector 01, the second key 53 on the pressure-relieving rubber sleeve 8 is inserted into the second key groove 43 in the mounting housing 4 to achieve anti-misinsertion guidance. The fifth groove 81 of the pressure-relieving rubber sleeve 8 is interference-fitted on the second boss 44 of the mounting housing 4. At this time, the pressure-relieving rubber sleeve 8 is interference-fitted on the mounting housing 4 and the rubber connector 5 to achieve a set of high-pressure isolation and buffering barriers. After docking in place, the third groove 55 of the rubber connector 5 is interference-fitted on the first convex hull 011 of the ceramic sintered sealed connector 01 to achieve another pressure-bearing seal in the docking area and improve the pressure-bearing performance of the assembly. And for each strand of core wire, due to the clamping of the wire hoop 54, through the overall interference extrusion of the rubber cylinder 52 and the press connection and conduction method at the tail end of the jack 6, the single-strand core wire cannot rotate freely axially and cannot move around. During downhole exploration, the mechanical wear is small under vibration conditions, and the mechanical life is improved.

[0041] The above are only specific application examples of the present utility model, which do not constitute any limitation to the protection scope of the present utility model. Any technical solutions formed by equivalent transformation or equivalent substitution fall within the scope of the rights protection of the present utility model.

Claims

1. A pluggable multi-core cable heat-resistant and pressure-bearing component structure, characterized in that: The invention comprises a ceramic sintered sealed connector (01), a mounting shell (4), a rubber connector (5), a pressure-relieving rubber sleeve (8), a steel wire armor cable core wire (9), an upper base (12) and a lower base (10), wherein a first flange (012) is provided at the middle position of the ceramic sintered sealed connector (01) and a plurality of plug pins (014) are provided at one end, the steel wire armor cable core wire (9) passes through the lower base (10) and is plugged into the ceramic sintered sealed connector (01) via a plug hole (6). The outer walls of the lower base (10) and the socket (6) are crimped to the inner wall of the rubber connector (5); the outer walls of the rubber connector (5) and the ceramic sintered sealing connector (01) are crimped to the mounting shell (4) via a first O-ring (2); one end of the outer wall of the mounting shell (4) is interference fit with the pressure-relieving rubber sleeve (8); the upper base (12) is crimped to the outer wall of the socket (6) via a second O-ring (7) and is crimped to one end of the lower base (10).

2. The pluggable multi-core cable heat-resistant and pressure-bearing assembly structure according to claim 1 is characterized in that: A first keyway (41) is provided at one end of the mounting shell (4), and a second keyway (43) is provided at the other end; a first groove (42) is provided at the inner wall of the mounting shell (4); the first keyway (41) is plugged into the ceramic sintered sealing connector (01) via a first key (013); and the rubber connector (5) is plugged into the second keyway (43).

3. The pluggable multi-core cable heat-resistant and pressure-bearing assembly structure according to claim 2 is characterized in that: The first groove (42) is clamped with a C-shaped retaining ring (3), and the C-shaped retaining ring (3) is in abutment with the first flange (012).

4. The pluggable multi-core cable heat-resistant and pressure-bearing assembly structure according to claim 2 is characterized in that: The ceramic sintered sealing connector (01) is provided with a first convex bump (011) near the first flange (012), and a third groove (55) is provided on the inner wall of one end of the rubber connector (5), and the first convex bump (011) is snap-fitted with the third groove (55).

5. The pluggable multi-core cable heat-resistant and pressure-bearing assembly structure according to claim 2 is characterized in that: A second convex bump (44) is also provided at the other end of the mounting shell (4), a fifth groove (81) is provided at one end of the inner wall of the pressure-relieving rubber sleeve (8), and a sixth groove (82) is provided at the middle inner wall, and the second convex bump (44) is snap-fitted with the fifth groove (81).

6. The pluggable multi-core cable heat-resistant and pressure-bearing assembly structure according to claim 5, characterized in that: A vulcanization hoop (51) is provided on the outer wall of the rubber connector (5), and a plurality of third convex bulges (512) are provided on the outer wall of the vulcanization hoop (51), and the third convex bulges (512) are engaged with the sixth groove (82).

7. The pluggable multi-core cable heat-resistant and pressure-bearing assembly structure according to claim 2, characterized in that: A wire hoop (54) and a rubber barrel (52) are sequentially arranged at one end of the rubber connector (5), and a second key (53) is arranged at the other end, wherein the second key (53) is plugged into the second key slot (43).

8. The pluggable multi-core cable heat-resistant and pressure-bearing assembly structure according to claim 2, characterized in that: The outer wall of the insertion hole (6) is provided with a fourth groove (61), and the fourth groove (61) is crimped and sealed with the second O-ring (7).

9. The pluggable multi-core cable heat-resistant and pressure-bearing assembly structure according to claim 2, characterized in that: The lower base (10) is provided with a first axial boss (101) and a seventh groove (102) at one end.

10. The pluggable multi-core cable heat-resistant and pressure-bearing assembly structure according to claim 9, characterized in that: The upper base (12) is provided with an axial straight hole (121) and a second boss (122) at one end, and a third O-ring (11) is crimped and sealed between the second boss (122) and the seventh groove (102).

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