CN112993658B

CN112993658B - Electric signal connecting device for underwater high-pressure environment

Info

Publication number: CN112993658B
Application number: CN202110204202.8A
Authority: CN
Inventors: 耿淦; 时好振; 顾鹏
Original assignee: Schlumberger Oilfield Technologies Shandong Co ltd
Current assignee: Schlumberger Oilfield Technologies Shandong Co ltd
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2023-06-13
Anticipated expiration: 2041-02-24
Also published as: CN112993658A

Abstract

The invention relates to the technical field of petroleum drilling, and provides an electric signal connecting device for an underwater high-pressure environment, wherein a male end assembly with a plurality of annular contacts is configured to be repeatedly engaged with and separated from a female end socket assembly with a corresponding plurality of annular contact assemblies; the advantages are that: the invention ensures that the annular contact is aligned with the corresponding female end annular contact correctly, and has a telescopic sealing structure; the uninterrupted electric contact of a plurality of electric and data transmission lines is kept, the field service is flexible, the time is saved, and the operation is simple and convenient; the floating frame A and the mud scraping piston can axially move, and a plurality of male end annular contact assemblies can be sealed and protected; the floating frame B can move axially and can seal and protect a plurality of female end annular contact assemblies.

Description

Electric signal connecting device for underwater high-pressure environment

Technical Field

The invention relates to the technical field of petroleum drilling, in particular to an electric signal connection device for an underwater high-pressure environment.

Background

In Logging While Drilling (LWD) instruments, multiple drill collars are connected end to end, one or more sensors are arranged in each drill collar, a battery for supplying power to the sensors is arranged in a single drill collar, the length of the battery is about 1m, during drilling operation, the farther the battery section is generally considered to be better from the drill bit, and conversely, the closer the sensor section is to the drill bit, because the data sensed by the sensors originate from the stratum around the near drill bit (including the stratum not drilled by the drill bit), the more effective to guide the driller controlling the drill bit. It is common to employ a battery in the drill collar remote from the sensor section, as this allows for a larger battery to be deployed, improving the operability of the various instruments. The drill collar sections are connected, so that not only is electric power connected, but also various signal data are connected. The different data signals come from different sensors, such as acoustic sensors, nuclear magnetic resonance sensors, resistivity sensors, dielectric sensors, gamma ray depth detection sensors, etc., which are disposed inside different drill collars, forming a modular tool section for LWD (logging while drilling). The desired tool segments are typically selected for assembly based on the actual environment of the well. Signal transmission lines between the plurality of tool segments are interconnected. The LWD tool is subjected to drilling fluid under the pressure of 172MPa and is subjected to the shock impact of the drilling tool (axial shock impact force is in the range of 500G), so that the electrical connection device between the tool sections becomes a fault point of the whole tool, and a plurality of transmission line connections are particularly prone to faults, so that short circuits occur between exposed surfaces of the contact elements. It is desirable to minimize the potential for fluid to enter the contact area and provide an inherent connection that can withstand small amounts of fluid entry. In practice, at the joint of the two drill collars, the distance of the male end screwed into the female end is not fixed, so that the distance of the male end entering the female end is adjustable when designing the male-female end electric signal connecting device.

Disclosure of Invention

The invention aims to solve the defects of the prior art and provides an electric signal connecting device for an underwater high-pressure environment.

The novel technical scheme of the invention is as follows: the electric signal connecting device for the underwater high-pressure environment comprises a male end plug assembly and a female end socket assembly, wherein the female end socket assembly is connected with the male end plug assembly through a sealing ring, the male end plug assembly is fixed in a drill collar A through an expansion ring, the female end socket assembly is fixed in a drill collar B through a centralizing ring, and the drill collar B is in threaded connection with the drill collar A; the male plug component comprises an expansion ring, a plug barrel, a stabilizing wing A, a spring retainer ring A, a screw cap, a high-voltage plug A, a large spring, a floating frame A, a small spring, an insulating barrel, an insulating core, an insulating sleeve A, an insulating sleeve B, a male secondary contact, a top contact and a mud scraping piston, wherein the high-voltage plug A is arranged at one end of the expansion ring, the high-voltage plug A is fixed through the screw cap, the other end of the high-voltage plug A is connected with three wires, one wire penetrates through the insulating core and is welded with the top contact, the other two wires are welded with the male secondary contact through a wire groove A on the insulating barrel, the other end of the expansion ring is connected with the plug barrel through a sealing ring and threads, the plug is characterized in that a stable wing A is sleeved on the plug barrel, the end part of the stable wing A is fixed through a spring retainer A, a floating frame A is installed in the plug barrel, a large spring is installed between one end of the floating frame A and the end part of an expansion ring, an insulating sleeve B, a male end secondary contact, the insulating sleeve A and a top contact are sequentially installed at the other end of the floating frame A, a mud scraping piston is installed outside the insulating sleeve B, the male end secondary contact, the insulating sleeve A and the top contact through sealing rings, the outer wall of the mud scraping piston is installed on the inner wall of the plug barrel through sealing rings, an insulating barrel is installed on the inner wall of the floating frame A, and an insulating core is installed on the inner wall of the insulating barrel; the female end socket component comprises a centralizing ring, a socket barrel, a stabilizing wing B, a spring retainer ring B, a sealing ring, a top end pressure cap, a sliding spring pressure cap, a top end sliding spring sleeve, a floating frame B, a socket core barrel, a small insulation sleeve, a second contact sliding spring, a large insulation sleeve, a spring, a high-voltage plug B, a high-voltage plug C, a wiring barrel and a plug, wherein the centralizing ring is connected with the socket barrel through threads and the sealing ring, the socket barrel is sleeved with the stabilizing wing B, the stabilizing wing B is fixed through the spring retainer ring B and is contacted with the inner wall of the drill collar B, one end of the centralizing ring is tightly pressed with the plug, the plug is connected with the inner wall of the socket barrel through threads, one end of the plug is fixedly provided with the high-voltage plug C through the sealing ring, a wire is welded on the high-voltage plug C, the novel high-voltage socket is characterized in that three wires are arranged, one wire is welded at one end of a high-voltage plug B, the other end of the high-voltage plug B is welded at one end of the wire, the other end of the wire is welded with a top sliding spring sleeve, two wires are welded with a secondary contact sliding spring sleeve through a wire groove of a wire-feeding barrel, the inner wall of the socket barrel is fixed with the wire-feeding barrel at the end part of the high-voltage plug C, the wire-feeding barrel is provided with the wire groove B, the high-voltage plug B is fixed in the wire-feeding barrel, the socket barrel is installed at the end part of the wire-feeding barrel, the end part of the socket barrel is fixed through a top pressing cap, the top pressing cap is connected with the inner wall of the socket barrel through a sealing ring and threads, a large insulating sleeve, a small insulating sleeve and a secondary contact sliding spring sleeve are installed in the socket barrel, a secondary contact sliding spring is welded in the secondary contact sliding spring sleeve, and a large insulating sleeve, the small insulation sleeve and the secondary contact slide spring sleeve are internally provided with a floating frame B, a spring is arranged between the floating frame B and the high-voltage plug B, the other end of the floating frame B is provided with a top slide spring sleeve, the top slide spring sleeve is internally provided with a top slide spring, the top slide spring sleeve is fixed through a slide spring pressing cap, the slide spring pressing cap is connected with the end part of the floating frame B through threads, and the slide spring pressing cap is fixed on the inner wall of the top pressing cap through a sealing ring.

The insulating sleeve A is conical.

The insulating sleeve B is cylindrical.

The high-pressure plug A and the high-pressure plug C are three-needle high-pressure plugs.

The high-pressure plug B is a single-needle high-pressure plug.

The number of the insulating sleeves B is 2.

The male end and the second-level contact are 2 groups.

The insulating sleeve B and the male end secondary contact are alternately assembled.

The beneficial effects of the invention are as follows: the male plug assembly of the present invention having a plurality of annular contacts repeatedly engages and disengages the female receptacle assembly having a corresponding plurality of annular contacts. The male plug is longitudinally resiliently movable to ensure proper alignment of the plurality of ring contacts with the corresponding plurality of female ring contacts. Also included is a telescoping seal arrangement for protecting the annular contact and contact assembly from external fluid. Used in, but not limited to, high temperature (.ltoreq.140℃), high voltage (.ltoreq.172 MPa) and mechanical shock environments downhole in a well while maintaining uninterrupted electrical contact of a plurality of electrical, data transmission lines. The on-site service is flexible, the time is saved, and the operation is simple and convenient. The male plug assembly includes an open-ended housing, a plurality of male annular contact assemblies that make contact with a corresponding plurality of female annular contact assemblies to establish connection and disconnection. The male end plug is arranged on a floating frame A, the floating frame A can axially move, a mud scraping piston is arranged between the floating frame A and an opening of the shell, the mud scraping piston can axially move, and before the male end plug is not connected with the female end socket assembly, the mud scraping piston is isolated from the outside of the opening, so that a plurality of male end annular contact assemblies can be protected in a sealing mode. The female end socket assembly includes a housing open at one end and an inner female end annular contact assembly, and further includes an axially movable floating frame B on which a female end annular contact is disposed for contact with a first contact of the male end annular contact. Before the floating frame B is not connected with the male end plug assembly, the floating frame B is equivalent to a mud scraping piston and is arranged at an opening position, isolated from the outside of the opening, and a plurality of female end annular contact assemblies can be sealed and protected.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic structural diagram of a in fig. 1.

Fig. 3 is a schematic structural view of a male plug assembly.

Fig. 4 is a schematic view of a portion of the components of the male plug assembly.

Fig. 5 is a schematic view of the construction of the movement of the scraper piston.

FIG. 6 is a schematic diagram of the male plug assembly in a drill collar A.

Fig. 7 is a schematic structural view of a female end socket assembly.

Fig. 8 is a schematic diagram of the structure of B in fig. 7.

Fig. 9 is a schematic view of a portion of the components of the female end socket assembly.

Fig. 10 is a schematic view of the structure of the movement of the floating frame B.

FIG. 11 is a schematic view of the female end socket assembly in a drill collar B.

Wherein: 1. male plug assembly, 101, expansion ring, 102, plug barrel, 103, stabilizing wings a,104, spring retainer a,105, mud scraping piston, 106, top contact, 107, insulation sleeve a,108, male secondary contact, 109, insulation sleeve B,110, small spring, 111, insulation core, 112, insulation barrel, 112-1, wire groove a,113, floating frame a,114, large spring, 115, high voltage plug a,116, threaded cap, 2, female end socket assembly, 201, centralizing ring, 202, socket barrel, 203, stabilizing wings B,204, spring retainer B,205, sealing ring, 206, top pressure cap, 207, floating frame B,208, spring, 209, high voltage plug B,210, wire groove B,211, high voltage plug C,212, wire plug, 213, large insulation sleeve, 214, secondary contact spring, 215, secondary contact spring, 216, small insulation sleeve, 217, socket core barrel, 218, top pressure cap, 220, drill collar B, 3, drill collar B.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

The electric signal connecting device for the underwater high-pressure environment comprises a male plug assembly 1 and a female socket assembly 2, wherein the female socket assembly 2 is connected with the male plug assembly 1 through a sealing ring 205, the male plug assembly 1 is fixed in a drill collar A3 through an expansion ring 101, the female socket assembly 2 is fixed in a drill collar B4 through a centralizing ring 201, and the drill collar B4 is in threaded connection with the drill collar A3; the male end plug assembly 1 comprises an expansion ring 101, a plug barrel 102, a stabilizing wing A103, a spring retainer A104, a threaded cap 116, a high-voltage plug A115, a large spring 114, a floating frame A113, a small spring 110, an insulating barrel 112, an insulating core 111, an insulating sleeve A107, an insulating sleeve B109, a male end secondary contact 108, a top end contact 106 and a mud scraping piston 105, wherein the high-voltage plug A115 is arranged at one end of the expansion ring 101, the high-voltage plug A115 is fixed through the threaded cap 116, the other end of the high-voltage plug A115 is connected with three wires, one wire passes through the insulating core 111 to be welded with the top end contact 106, the other two wires are welded with the male end secondary contact 108 through a wire groove A112-1 on the insulating barrel 112, the other end of the expansion ring 101 is connected with the plug barrel 102 through a sealing ring and threads, the plug barrel 102 is sleeved with a stable wing A103, the end part of the stable wing A103 is fixed through a spring retainer ring A104, a floating frame A113 is arranged in the plug barrel 102, a large spring 114 is arranged between one end of the floating frame A113 and the end part of the expansion ring 101, an insulating sleeve B109, a male end secondary contact 108, an insulating sleeve A107 and a top contact 106 are sequentially arranged at the other end of the floating frame A113, a mud scraping piston 105 is arranged outside the insulating sleeve B109, the male end secondary contact 108, the insulating sleeve A107 and the top contact 106 through sealing rings, the outer wall of the mud scraping piston 105 is arranged on the inner wall of the plug barrel 102 through the sealing rings, an insulating barrel 112 is arranged on the inner wall of the floating frame A113, and an insulating core 111 is arranged on the inner wall of the insulating barrel 112; the female end socket assembly 2 comprises a centralizing ring 201, a socket barrel 202, a stabilizing wing B203, a spring retainer B204, a sealing ring 205, a top end pressure cap 206, a sliding spring pressure cap 220, a top end sliding spring 219, a top end sliding spring sleeve 218, a floating frame B207, a socket core barrel 217, a small insulating sleeve 216, a second contact sliding spring sleeve 215, a second contact sliding spring 214, a large insulating sleeve 213, a spring 208, a high-pressure plug B209, a high-pressure plug C211, a wire-feeding barrel 210 and a plug 212, wherein the centralizing ring 201 is connected with the socket barrel 202 through threads and the sealing ring, the socket barrel 202 is sleeved with the stabilizing wing B203, the stabilizing wing B203 is fixed through the spring retainer B204, the stabilizing wing B203 is contacted with the inner wall of the drill collar B4, one end of the centralizing ring 201 is tightly pressed with the plug 212, the plug 212 is connected with the inner wall of the socket barrel 202 through threads, one end of the plug 212 is fixed with the high-pressure plug C211 through the sealing ring, the high-voltage plug C211 on weld have the wire, the wire be three, the wire weld in high-voltage plug B209 one end, high-voltage plug B209 other end weld in wire one end, the wire other end with top sliding spring sleeve 218 welding, another two the wire pass through the metallic channel of wiring section of thick bamboo 210 and a second grade contact sliding spring sleeve 215 welding, high-voltage plug C211 tip and socket section of thick bamboo 202 inner wall be fixed with wiring section of thick bamboo 210, wiring section of thick bamboo 210 outer wall be equipped with metallic channel B210-1, wiring section of thick bamboo 210 internal fixation have high-voltage plug B209, wiring section of thick bamboo 210 tip install socket core section of thick bamboo 217, socket core section of thick bamboo 217 tip pass through top pressing cap 206 and fix, top pressing cap 206 pass through sealing washer and screw thread and socket section of thick bamboo 202 inner wall connection, socket core section of thick bamboo 217 in install big insulating sleeve 213, wire groove 210-1, the small insulation sleeve 216 and the secondary contact slide spring sleeve 215, the secondary contact slide spring sleeve 215 is internally welded with the secondary contact slide spring 214, the large insulation sleeve 213, the small insulation sleeve 216 and the secondary contact slide spring sleeve 215 are internally provided with the floating frame B207, the spring 208 is arranged between the floating frame B207 and the high-voltage plug B209, the other end of the floating frame B207 is provided with the top slide spring sleeve 218, the top slide spring 218 is internally provided with the top slide spring 219, the top slide spring sleeve 218 is fixed through the slide spring pressing cap 220, the slide spring pressing cap 220 is connected with the end part of the floating frame B207 through threads, and the slide spring pressing cap 220 is fixed on the inner wall of the top pressing cap 206 through a sealing ring.

The insulating sleeve A107 is conical.

The insulating sleeve B109 is cylindrical.

The high-pressure plug A115 and the high-pressure plug C211 are three-needle high-pressure plugs.

The high-pressure plug B209 is a single-needle high-pressure plug.

The number of the insulating sleeves B109 is 2.

The male-side secondary contacts 108 are 2 groups.

The insulating sleeve B109 is assembled with the male-end secondary contact 108 alternately.

Male plug assembly 1:

before the male plug assembly 1 is not engaged with the female socket assembly 2, the mud scraping piston 105 is sealed with the plug barrel 102 through a sealing ring; the mud scraping piston 105 is sealed with the top end contact 106, the insulating sleeve A107, the male end secondary contact 108 and the insulating sleeve B109 through sealing rings, and wipes the male end contact through axial sliding. The top contact 106, the insulating sleeve A107, the male secondary contact 108 and the insulating sleeve B form a piece contact insulating sleeve assembly, an insulating cylinder 112, an insulating core 111 and are assembled on a piece floating frame A113, wherein the top contact 106 and the male secondary contact 108 (2 pieces) are welded with a wire R/Y/B (namely red/yellow/blue wires) which passes through an inner hole of the insulating core 111 and a wire groove of the insulating cylinder 112 respectively; the floating frame A113 is sealed with the plug cylinder 102 through a sealing ring, and the floating frame A113 can axially slide in the plug cylinder 102; when the scraper piston 105 and the floating frame a113 slide in the axial direction, the scraper piston is returned by the small spring 110 and the large spring 114. The three-needle high-pressure plug A115 is fastened on the expansion ring 101 through the threaded cap 116, and the expansion ring 101 is sealed with the plug barrel 102 through a sealing ring.

After the male plug assembly 1 is meshed with the female socket assembly 2, the top contact 106, the insulating sleeve A107, the male secondary contact 108 and the insulating sleeve B109 are meshed with the female slip ring contact assembly through the butt joint of the drill collar A3 and the drill collar B4, the mud scraping piston 105 and the floating frame A113 are pushed to axially slide, the small spring 110 and the large spring 114 are compressed, and when the male plug assembly 1 and the female socket assembly 2 are disengaged, the small spring 110 and the large spring 114 push the mud scraping piston 105 and the floating frame A113 to reset.

Female end socket assembly 2:

when the male plug assembly 1 is in butt joint with the female socket assembly 2, the socket barrel 202 is sealed with the plug barrel 102 through a sealing ring, so that the outside mud is prevented from being immersed. The stabilizing wings B203 are in contact with the inner wall of the drill collar B4, so that when the male plug assembly 1 is in butt joint with the female socket assembly 2, the coaxiality of the male and female assemblies is ensured, and the male and female assemblies can be smoothly spliced.

Before the male plug assembly 1 is not engaged with the female socket assembly 2, the top end press cap 206 presses the socket core barrel 217, is screwed on the socket barrel 202, and is sealed with the socket barrel 202 by a sealing ring. The top slide spring 219 is embedded in the top slide spring sleeve 218, is pressed on the floating frame B207 through the slide spring pressing cap 220, and is connected with the single-needle high-voltage plug B209 through a wire, and the secondary contact slide spring 214 and the secondary contact slide spring sleeve 215 are welded to fix the spring contact assembly. Through the threaded connection of the top end press cap 206 and the socket barrel 202, the socket core barrel 217, the small insulation sleeve 216, the secondary contact sliding spring sleeve 215, the large insulation sleeve 213, the wire barrel 210 and the three-pin high-voltage plug C211 are sequentially pressed in the socket barrel 202. The plug 212 is screwed with the socket barrel 202.

A spring is arranged between the floating frame B207 and the single-pin high-voltage plug B209, when the male end plug assembly 1 is meshed with the female end socket assembly 2, the top end contact 106, the insulating sleeve A107, the male end secondary contact 108 and the insulating sleeve B109 push the sliding spring pressing cap 220, the top end sliding spring 219, the top end sliding spring sleeve 218 and the floating frame B207, the socket core barrel 217, the small insulating sleeve 216, the secondary contact sliding spring sleeve 215, the secondary contact sliding spring 214 and the large insulating sleeve 213 compress the small spring 110, the large spring 114 and the female end socket assembly 2 is spring; ensuring that the tertiary contacts (including the top and the other two contacts) can be fully engaged. When the male plug assembly 1 is separated from the female socket assembly 2, the small spring 110, the large spring 114, the effective pushing member of the spring scrapes the mud piston 105 and the floating frame A113 assembly, and the sliding spring pressing cap 220, the top sliding spring 219, the top sliding spring sleeve 218 and the floating frame B207 are reset, so that the contacts of the male plug assembly 1 and the female socket assembly 2 are protected from short circuit caused by pollution of mud and the like.

Conducting wire routing:

the wire routing mainly refers to the connection of the electric signal connecting device with wires of various logging sensor modules. Wiring of the male plug assembly 1: the tip contact 106 is soldered to a wire (red wire) which passes through the insulating core 111; the male end secondary contact 108 is welded with wires (yellow wires and blue wires), the wires pass through a wire groove A112-1 on the insulating cylinder 112, extend to an inner hole of the insulating cylinder 112 through a hole at one end of the wire groove A112-1, are connected with a three-needle high-voltage plug A115 arranged at the tail end of the expansion ring 101 assembly, and the other end of the three-needle high-voltage plug A115 is connected with the wires of the logging sensor module, so that the wiring process of the male end plug of the logging module is completed.

Female end socket assembly 2: the top sliding spring sleeve 218 is welded with a lead (red wire), the lead passes through the floating frame B207 and is welded with the single-needle high-voltage plug B209, and the other end of the single-needle high-voltage plug B209 is welded with the three-needle high-voltage plug C211 by the lead (red wire); the secondary contact sliding spring sleeve 215 is welded with the wires (yellow wire and blue wire), the wires pass through the wire groove B210-1 on the wire barrel 210, extend to the inner hole of the wire barrel 210 through the hole at one end of the wire groove B210-1, are welded with the three-needle high-voltage plug C211, and the other end of the three-needle high-voltage plug C211 is connected with the wires of the logging sensor module, so that the wire-laying process of the socket at the female end of the logging module is completed.

Claims

1. An electric signal connection device for an underwater high-voltage environment comprises a male end plug assembly (1) and a female end socket assembly (2), and is characterized in that: the female end socket assembly (2) is connected with the male end plug assembly (1) through a sealing ring (205), the male end plug assembly (1) is fixed in the drill collar A (3) through an expansion ring (101), the female end socket assembly (2) is fixed in the drill collar B (4) through a centralizing ring (201), and the drill collar B (4) is in threaded connection with the drill collar A (3); the male plug assembly (1) comprises an expansion ring (101), a plug barrel (102), a stabilizing wing A (103), a spring retainer A (104), a threaded cap (116), three wires, one wire passing through the insulating core (111) and being welded with the top contact (106), the other two wires being welded with a male secondary contact (108) through a wire groove A (112-1) on the insulating barrel (112), a top contact (106) and a mud scraping piston (105), the high-voltage plug A (115) being installed at one end in the expansion ring (101), the high-voltage plug A (115) being fixed through the threaded cap (116), the other end of the high-voltage plug A (115) being connected with wires, one wire passing through the insulating core (111) and being welded with the top contact (106), the other two wires being welded with the male secondary contact (108) through the wire groove A (112-1) on the insulating barrel (112), the other end of the floating ring (101) being connected with the stabilizing wing A (102) through the threaded cap (116), the stabilizing wing A (102) being fixed at the other end of the floating ring (101), a large spring (114) is arranged between one end of the floating frame A (113) and the end part of the expansion ring (101), an insulating sleeve B (109), a male end secondary contact (108), an insulating sleeve A (107) and a top end contact (106) are sequentially arranged at the other end of the floating frame A (113), a mud scraping piston (105) is arranged outside the insulating sleeve B (109), the male end secondary contact (108), the insulating sleeve A (107) and the top end contact (106) through sealing rings, the outer wall of the mud scraping piston (105) is arranged on the inner wall of the plug cylinder (102) through sealing rings, an insulating cylinder (112) is arranged on the inner wall of the floating frame A (113), and an insulating core (111) is arranged on the inner wall of the insulating cylinder (112); the female end socket assembly (2) comprises a centralizing ring (201), a socket barrel (202), a stabilizing wing B (203), a spring retainer ring B (204), a sealing ring (205), a top end pressure cap (206), a sliding spring pressure cap (220), a top end sliding spring (219), a top end sliding spring sleeve (218), a floating frame B (207), a socket core barrel (217), a small insulating sleeve (216), a secondary contact sliding spring sleeve (215), a secondary contact sliding spring (214), a large insulating sleeve (213), a spring (208), a high-voltage plug B (209), a high-voltage plug C (211), a wire walking barrel (210) and a plug (212), wherein the centralizing ring (201) is connected with the socket barrel (202) through threads and the sealing ring, the socket barrel (202) is sleeved with the stabilizing wing B (203), the stabilizing wing B (203) is fixed through the spring retainer ring B (204), the stabilizing wing B (203) is contacted with the inner wall of the drill collar B (4), one end in the centralizing ring (201) is tightly pressed with the plug C (212), one end in the socket barrel (202) is connected with the plug C (212) through the threads and the plug C (212) is welded on the high-voltage plug (211), the utility model provides a high-voltage cable spool, including three wires, wire welding be in high-voltage plug B (209) one end, high-voltage plug B (209) other end welding is in wire one end, the wire other end and top sliding spring cover (218) welding, another two wires pass through the metallic channel of walking line section of thick bamboo (210) and a second contact sliding spring cover (215) welding, high-voltage plug C (211) tip and socket section of thick bamboo (202) inner wall fixed with walk line section of thick bamboo (210), walk line section of thick bamboo (210) outer wall be equipped with metallic channel B (210-1), walk line section of thick bamboo (210) internal fixation have high-voltage plug B (209), walk line section of thick bamboo (210) tip install socket core section of thick bamboo (217), socket core section of thick bamboo (217) tip pass through top pressure cap (206) and be connected with socket section of thick bamboo (202) inner wall through the sealing washer and screw thread, socket core section of thick bamboo (217) in install big insulating sleeve (213), little insulating sleeve (216) and second insulating sleeve (215) and second contact sliding spring (215) between two sliding spring frame (215) and second insulating sleeve (207) in the high-voltage plug B (209), the floating frame B (207) other end install top slide spring cover (218), and install top slide spring (219) in top slide spring cover (218), top slide spring cover (218) press cap (220) fixed through the slide spring, slide spring press cap (220) pass through screw thread and floating frame B (207) end connection, slide spring press cap (220) pass through the sealing washer and fix at top press cap (206) inner wall.

2. An electrical signal connection device for use in an underwater high pressure environment as claimed in claim 1, wherein: the insulating sleeve A (107) is conical.

3. An electrical signal connection device for use in an underwater high pressure environment as claimed in claim 1, wherein: the insulating sleeve B (109) is cylindrical.

4. An electrical signal connection device for use in an underwater high pressure environment as claimed in claim 1, wherein: the high-pressure plug A (115) and the high-pressure plug C (211) are three-needle high-pressure plugs.

5. An electrical signal connection device for use in an underwater high pressure environment as claimed in claim 1, wherein: the high-pressure plug B (209) is a single-needle high-pressure plug.

6. An electrical signal connection device for use in an underwater high pressure environment as claimed in claim 1, wherein: the number of the insulating sleeves B (109) is 2.

7. An electrical signal connection device for use in an underwater high pressure environment as claimed in claim 1, wherein: the number of the male end secondary contacts (108) is 2.

8. An electrical signal connection device for use in an underwater high pressure environment according to claim 1 or 6 or 7, wherein: the insulating sleeve B (109) and the male end secondary contact (108) are alternately assembled.