WO2015100845A1

WO2015100845A1 - Instrument pressure-bearing connection apparatus and assembly

Info

Publication number: WO2015100845A1
Application number: PCT/CN2014/072111
Authority: WO
Inventors: 冯永仁; 李健; 李军; 王增华; 韩奋; 陈国栋
Original assignee: 中国海洋石油总公司; 中海油田服务股份有限公司
Priority date: 2013-12-31
Filing date: 2014-02-14
Publication date: 2015-07-09
Also published as: CN103711481A; CN103711481B

Abstract

An instrument pressure-bearing connection apparatus comprises an housing (4), and comprises an insulation fixed base front cover (17), an upper guide head (18), a circuit framework (15), a lower guide head (14), and an insulation fixed base rear cover (19). Two ends of the circuit framework (15) are separately connected to the upper guide head (18) and the lower guide head (14). The insulation fixed base front cover (17) is mounted on one end of the upper guide head (18). The insulation fixed base rear cover (19) is sleeved inside the lower guide head (14). One end of the insulation fixed base rear cover (19) is provided with a first electric connector, and the insulation fixed base front cover (17) is provided with a second electric connector. The first electric connector is configured to be fitted to the second electric connector disposed on an insulation fixed base front cover (17) of another instrument pressure-bearing connection apparatus. An instrument pressure-bearing connection assembly comprises an instrument pressure-bearing connection apparatus and a pressure-bearing electric connection connector (6). The pressure-bearing electric connection connector (6) is fitted to and inserted with a second electric connector on an insulation fixed base front cover (17) on one instrument pressure-bearing connection apparatus by means of a third electric connector on one end, and is fitted to and inserted with a first electric connector on an insulation fixed base rear cover (19) on another instrument pressure-bearing connection apparatus by means of a fourth electric connector on the other end.

Description

Instrument pressure connecting device and component

Technical field

Embodiments of the present invention relate to the field of pressure connection of petroleum logging instruments, and more particularly to an instrument pressure connection device and assembly.

Background technique

The mechanical connection between the short sections of the downhole instrument requires pressure sealing and ensures that the electrical signal is effectively transmitted between the short sections. The oil logging instrument pusher usually uses an internal cavity oil-filled balance structure, and it is required to install a pressure-proof sealing insert on the short part of the pusher.

As shown in FIG. 1 , the Chinese utility model patent of application number 201020127378.5 discloses “an instrument pressure-sealing connection structure”, and specifically discloses: an electronic circuit skeleton, which is set in an electronic circuit casing, in the electronic circuit The upper sleeve is sleeved on the skeleton; the upper 68-core socket is mounted on the electronic circuit frame through the upper socket positioning sleeve; the lower joint is mounted on the upper adapter through the upper quick-turn nut, and the other end passes The lower quick-rotating nut is mounted on the pusher balance housing; the lower 68-pin socket is mounted in the lower adapter through the lower socket positioning sleeve; the 68-core pressure plug is inserted in the upper 68-pin socket and the lower 68 Between the core sockets.

The current pressure equipment uses a split structure, including two instrument joints and a pressure-bearing casing, which have the following disadvantages:

1. There are many connection interfaces, and the installation and disassembly are complicated;

2. The fixed position of the upper and lower joints cannot be achieved.

Summary of the invention

In an embodiment of the invention, an instrument pressure connection device and assembly are proposed which enable quick connection and positioning. The technical solution provided by the embodiments of the present invention is as follows: An instrument pressure connection device includes an outer casing and an insulating cover front cover installed in the outer casing, Upper guide head, circuit bobbin, lower guide head and insulating seat back cover;

Two ends of the circuit bobbin are respectively connected to the upper guiding head and the lower guiding head, the front cover of the insulating fixing seat is mounted on the other end of the upper guiding head, the rear cover of the insulating fixing seat is set inside the lower guiding head; the back cover of the insulating fixing seat is One end is provided with a first electrical connector and the insulating holder front cover is provided with a second electrical connector, and the first electrical connector is arranged to cooperate with a second electrical connector on the front cover of the insulating holder of another instrument pressure connection device . The first electrical connector can be one of a male connector and a female connector, and the second electrical connector can be the other of a male connector and a female connector.

One end of the circuit skeleton connected to the upper guiding head may be formed as a threaded connecting head, and one end of the upper guiding head and the circuit skeleton may be formed as a threaded locking ring with a corresponding thread, and the upper guiding head passes through the thread locking ring and the circuit skeleton Screwed.

An elastic member may be disposed at the interface between the circuit bobbin and the upper guiding head, and the elastic member may be disposed such that both ends of the elastic member abut against the circuit bobbin and the upper guiding head and are in a compressed state after the circuit bobbin and the upper guiding head are screwed respectively. .

A groove may be formed inside the thread of the circuit frame, and the elastic member may be trapped in the groove to adjust and cushion.

The elastic member can be a wave spring.

The lower guide head can be fixed to the circuit frame by screws.

The upper and lower guide heads may each be tubular, and the cavities in the upper and lower guide heads may communicate with the cavities between the circuit bobbin and the outer casing. The lower guiding head may be provided with a threaded locking ring, the threaded locking ring may be screwed to the outer casing, so that the lower guiding head is axially fixed to the outer casing, and the lower guiding head may be formed with a first fixed key, the first fixed key It can be caught in the first keyway of the housing. The pressure receiving connection device of the instrument may further comprise a quick-rotating nut with an external thread, the quick-rotating nut may be sleeved outside one end of the outer casing, and the other end of the outer casing may have an internal thread matched with the quick-rotating nut, so as to be able to pass the quick-rotation The nut can be used to insert the back cover of the insulating seat of one instrument pressure connection device with the front cover of the insulation seat of another instrument pressure connection device. The embodiment of the invention further provides an instrument pressure connection assembly, comprising a pressure-bearing electrical connection joint and the above-mentioned instrument pressure connection device, wherein one end of the pressure-bearing electrical connection joint is provided with a third electrical connection head, and the other end is provided with a first The four-electric connector, the pressure-corrugated electrical connector is mated with the second electrical connector on the front cover of the insulating holder of the pressure-bearing connection device of the instrument through the third electrical connector, and is connected to the other device through the fourth electrical connector The first electrical connector on the back cover of the insulating holder of the pressure connecting device is mated.

The pressure-bearing connection assembly of the instrument may also be provided with a first retaining ring, the first retaining ring being arranged to axially fix the pressure-bearing electrical connecting joint and the outer casing; the outer casing of the pressure-bearing connecting device of the instrument may be provided with a second keyway, and the pressure-bearing electrical The connection connector may be provided with a second fixing button, and the second fixing button is arranged to clamp the pressure-bearing electrical connection connector into the second key groove of the housing. The lower guiding head of the pressure bearing connection device of the instrument may be provided with a guiding key, and the pressure electrical connection joint may be provided with a guiding groove so that the lower guiding head can be clamped to the pressure receiving connection component of the other instrument through the guiding key of the lower guiding head The pressure is electrically connected to the guide groove of the connector, so that the first electrical connector and the fourth electrical connector of the two or more instrument pressure connection components are mated. The quick-rotating nut may be arranged to be mated with the first electrical connector on the back cover of the insulating holder of one instrument pressure-bonding assembly and the fourth electrical connector of the pressure-bearing electrical connector of the other pressure-bearing connection component of the instrument, Two or more instrument pressure connection components are connected end to end. The instrument pressure connection assembly may further be provided with a first sealing ring, a second sealing ring, a third sealing ring and a fourth sealing ring; the first sealing ring is arranged to seal the pressure-bearing electrical connection joint with the outer casing, The second sealing ring is arranged to seal the lower guiding head with the outer casing, the third sealing ring is arranged to seal the insulating fixing seat back cover and the lower guiding head, and the fourth sealing ring is arranged to make the first electrical connection The head is sealed with the insulating seat back cover, and the extension between the pressure electrical connection joint and the insulating seat front cover may be provided with a second retaining ring. The outer circumference of the outer casing may be provided with a fifth sealing ring which is arranged to seal between the connected instrument pressure-bearing connection components.

The pressure bearing connecting device and the assembly provided by the embodiments of the invention adopt the integral structure, can realize the quick connection between the instruments, and has the simple internal structure, easy positioning, disassembly and maintenance, and the internal pressure bearing joint, realizing the instrument Protection function between. BRIEF abstract

Figure 1 is a schematic view showing the structure of a conventional pressure-bearing connection structure of an instrument;

2 is a schematic view showing the external structure of an instrument pressure connection assembly according to an embodiment of the present invention;

Figure 3 is a cross-sectional view taken along line B-B of Figure 2 of the embodiment of the present invention;

Figure 4 is a cross-sectional view taken along line C-C of Figure 3 of the embodiment of the present invention;

Figure 5 is a cross-sectional view taken along line D-D of Figure 3 of the embodiment of the present invention;

Figure 6 is a cross-sectional view taken along line E-E of Figure 3 of the embodiment of the present invention;

Figure 7 is a cross-sectional view taken along the line F-F of Figure 3 of the embodiment of the present invention;

Figure 8 is a perspective view showing the disassembled state of the pressure receiving connection assembly of the instrument according to the embodiment of the present invention. Preferred embodiment of the invention

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other. As shown in FIG. 2 and FIG. 3, an instrument pressure connection device includes: a casing 4 and an insulation fixing seat front cover 17 installed in the casing 4, an upper guiding head 18, a circuit skeleton 15, a lower guiding head 14 and an insulation. Fixing seat back cover 19;

The circuit bobbin 15 is housed inside the casing 4, and one end of the lead frame 18 is connected to one end of the circuit bobbin 15, the front cover 17 of the insulating mount is mounted at the other end of the upper guide head 18, and the lower guide head 14 is fixed to the circuit bobbin 15. The other end of the insulating holder rear cover 19 is disposed inside the lower guiding head 14; one end of the insulating fixing seat rear cover 19 is provided with a first male pin connector 11-1, and one end of the insulating fixing seat front cover 17 is provided with a first female pin connector 10 -2, the first male connector 11-1 on the insulating holder rear cover 19 is mated with the first female connector 10-2 on the insulating holder front cover 17 of the other instrument pressure receiving device. Those skilled in the art will appreciate that the connection of the male pin connector and the female pin connector can be any form of electrical connection.

As shown in FIGS. 3 and 8, one end of the circuit bobbin 15 connected to the upper guide head 18 is formed with an external thread, and one end of the upper guide head 18 connected to the circuit bobbin 15 is formed as a threaded lock ring 12 with an internal thread. The upper guide head 18 is threaded to the circuit bobbin 15 by a threaded lock ring 12. Those skilled in the art It can be understood that the external thread on the circuit bobbin 15 can be changed to an internal thread and the internal thread on the thread lock ring 12 can be changed to an external thread as long as the two are matched.

An elastic member 13 is disposed at the abutting portion of the circuit bobbin 15 and the upper guiding head 18. After the circuit bobbin 15 and the upper guiding 18 are screwed, the two ends of the elastic member 13 respectively abut against the circuit bobbin 15 and the upper guiding head 13 and are respectively Compressed state.

A groove is formed inside the external thread of the circuit frame 15, and the elastic member 13 is trapped in the groove to serve as an adjustment and cushioning function. Further, the elastic member 13 is preferably a wave spring.

As shown in FIG. 3, the lower guide head 14 is fixed to the other end of the circuit bobbin 15 by screws 8. As shown in FIGS. 3 and 8, the upper guide head 18 and the lower guide head 14 are both duct-like, and the cavity in the upper guide head 18 and the lower guide head 14 communicates with the cavity between the circuit frame 15 and the outer casing 4. As shown in FIG. 3 and FIG. 8, the lower guiding head 14 is provided with a threaded locking ring 3, and the locking ring 3 is screwed to the outer casing 4, and the threaded locking ring 3 and the outer casing 4 are screwed through the lower guiding head 14. The lower guide head 14 is axially fixed to the outer casing 4, and as shown in FIGS. 5 and 8, the lower guide head 14 is formed with a fixed key 22-2, and the fixed key 22-2 is engaged with the key groove 23-2 of the outer casing 4. Inside. In the embodiment of the present invention, the lower guide head 14 and the outer casing 4 are tightened by the threaded lock ring 3, so that the lower guide head 14 is axially fixed to the outer casing 4, and the lower guide head 14 has no shaft in the outer casing 4 by the above manner. There is no rotation to the sway. As shown in FIG. 2, FIG. 3 and FIG. 8, the pressure bearing connection device of the embodiment of the present invention further includes a quick-rotating nut 16 with an external thread, and the quick-rotating nut 16 is fitted on the outside of the outer casing 4, and the nut is fastened. The insulating seat back cover 19 of one instrument pressure connection device is mated with the insulating seat front cover 17 of another instrument pressure connection device, and the first of the insulation fixing seat back cover 19 of one instrument pressure connection device The male pin connector 11-1 is mated with the first female pin connector 10-2 of the insulating holder front cover 17 of the other instrument pressure receiving device. The rear end of the outer casing 4 has an internal thread that cooperates with the quick-rotating nut 16, and the rotation is converted into an axial movement by the quick-rotating nut 16, so that two or more instruments can be connected end to end, the male connector and the male connector Female pin connector fits. As shown in FIG. 3 and FIG. 8 , an embodiment of the present invention further provides an instrument pressure connection component, including The pressure-bearing electrical connection connector 6 and the above-mentioned instrument pressure connection device, the pressure-bearing electrical connection connector 6 is provided with a second female pin connector 10-1 at one end and a second male pin connector 11-2 at the other end. The electrical electrical connector 6 is mated with the first female connector 10-2 on the insulating holder front cover 17 of an instrument pressure receiving connection through the second male connector 11-2, and through the second female connector 10 The -1 is mated with the first male connector 11-1 on the rear cover 19 of the insulating holder of the pressure receiving connection of another instrument. As shown in FIG. 3 and FIG. 5, the pressure-bearing electrical connection joint 6 of the embodiment of the present invention is disposed at the front end of the outer casing 4, and as shown in FIG. 3, the pressure-bearing electrical connection joint 6 and the outer casing 4 are axially fixed by the retaining ring 1. As shown in Figs. 3, 4 and 8, the pressure-bearing electrical connection joint 6 is caught in the key groove 23-1 of the outer casing 4 by the fixing key 22-1 of the pressure-receiving electrical connection joint 6.

In the above manner, the pressure-bearing electrical connection joint 6 has neither axial sway nor rotation in the outer casing 4.

In the embodiment of the present invention, the lower guiding head 14 is clamped into the guiding groove 25 of the pressure-bearing electrical connecting joint 6 of another instrument pressure-bonding connection assembly by the guiding key 24 of the lower guiding head 14, and two or more instruments are pressure-connected. The first male pin connector 11-1 of the assembly and the second female pin connector 10-1 are mated. When referring to the instrument pressure connection assembly with the pressure-bearing electrical connection connector 6, the first male connector 11-1 on the back cover 19 of the insulating holder of one instrument is connected to the other device by the quick-rotation nut 16 The second female connector 10-1 of the pressure-receiving electrical connector 6 of the pressure-receiving connection assembly is mated with the male pin connector and the female pin connector of the two or more instrument-bearing connection components. Further, as shown in FIG. 3 and FIG. 8 , in the instrument pressure connection assembly of the embodiment of the invention, the pressure-bearing electrical connection joint 6 and the outer casing 4 are sealed by the sealing ring 5 to ensure that moisture does not enter the outer casing 4 . . The lower guide head 14 is sealed to the outer casing 4 by the seal ring 9 to ensure that moisture does not enter the outer casing 4. The insulating holder rear cover 19 and the lower guide head 14 are sealed by the seal ring 21 to ensure that moisture does not enter the outer casing 4. The male pin joint is sealed with the insulating seat back cover 19 by the seal ring 20 to ensure that moisture does not enter the outer casing 4. A retaining ring 7 is provided on the extension between the pressure-bearing electrical connection 6 and the insulating holder front cover 17. The outer periphery of the outer casing 4 is provided with a sealing ring 2 through which the sealed pressure-bearing connection components are sealed, and moisture cannot enter the two or more instrument-bearing connection components after the connection. The embodiments disclosed in the embodiments of the present invention are as described above, but the above is only an embodiment for facilitating understanding of the present invention, and is not intended to limit the present invention. Any modification and variation in the form and details of the embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention. The scope must still be determined by the scope of the appended claims.

Industrial applicability

The pressure connecting device and the component of the instrument provided by the embodiment of the invention can realize the quick connection between the instruments, the internal structure is simple, the positioning, the disassembly and the maintenance are easy, and the pressure connector is arranged inside, thereby realizing the protection between the instruments. Features.

Claims

claims

1. An instrument pressure-bearing connection device, including a shell and an insulating holder front cover installed in the casing, an upper guide head, a circuit skeleton, a lower guide head and an insulating holder back cover; both ends of the circuit skeleton The upper guide head and the lower guide head are respectively connected, the front cover of the insulating fixed seat is installed on the other end of the upper guide head, and the rear cover of the insulating fixed seat is set inside the lower guide head;

The back cover of the insulating holder is provided with a first electrical connector and the front cover of the insulating holder is provided with a second electrical connector. The first electrical connector is configured to cooperate with the insulating fixation of another instrument pressure-bearing connection device. The second electrical connector on the front cover of the seat.

2. The instrument pressure-bearing connection device according to claim 1, wherein the first electrical connector is one of a male pin connector and a female pin connector, and the second electrical connector is a male pin connector or a female pin connector. Another one in the joint.

3. The instrument pressure-bearing connection device according to claim 1, wherein one end of the circuit frame connected to the upper guide head is threaded, and one end of the upper guide head connected to the circuit frame is threaded. A threaded lock ring, the threads on the threaded locking ring match the threads on the circuit skeleton, so that the upper guide head is connected to the circuit skeleton through the threaded locking ring.

4. The instrument pressure-bearing connection device according to claim 3, wherein an elastic component is provided at the joint between the circuit skeleton and the upper guide head, and the elastic component is arranged between the circuit skeleton and the upper guide head. After the guide head is screwed, the two ends of the elastic component respectively bear against the circuit frame and the upper guide head, and the elastic component is in a compressed state.

5. The instrument pressure-bearing connection device according to claim 4, wherein a groove is formed inside the thread of the circuit frame, and the elastic component is trapped in the groove to play the role of adjustment and buffering.

6. The instrument pressure-bearing connection device according to claim 1, wherein the lower guide head is fixed to the circuit frame by screws.

7. The instrument pressure-bearing connection device according to claim 1, wherein the upper guide head and the lower guide head are both conduit-shaped, and the cavities in the upper guide head and the lower guide head are in contact with the circuit. The cavity between the frame and the shell is connected.

8. The instrument pressure-bearing connection device according to claim 1, wherein a threaded lock ring is installed outside the lower guide head, and the threaded lock ring is threadedly connected to the housing, so that the lower guide head is connected to the housing. The housing is axially fixed, and a first fixed key is formed on the lower guide head, and the first fixed key is stuck in the first keyway of the housing.

9. The instrument pressure-bearing connection device according to claim 1, further comprising a quick-turn nut with an external thread, the quick-turn nut is outside one end of the housing, and the other end of the housing is provided with the The internal threads of the quick-turn nut are matched so that the back cover of the insulating fixing seat of one instrument pressure-bearing connection device can be mated with the front cover of the insulating fixing seat of another instrument pressure-bearing connection device through the quick-turn nut.

10. An instrument pressure-bearing connection assembly, including a pressure-bearing electrical connection joint and an instrument pressure-bearing connection device according to any preceding claim, one end of the pressure-bearing electrical connection joint is provided with a third electrical connector, The other end is provided with a fourth electrical connector. The pressure-bearing electrical connection connector is mated with the second electrical connector on the front cover of the insulating fixed seat of an instrument pressure-bearing connection device through the third electrical connector and is connected through The fourth electrical connector is mated with the first electrical connector on the back cover of the insulating fixed base of another instrument pressure-bearing connection device.

11. The instrument pressure-bearing connection assembly according to claim 10, the instrument pressure-bearing connection assembly is further provided with a first retaining ring, and the first retaining ring is configured to connect the pressure-bearing electrical connection joint to the housing. Axial fixation; The shell of the instrument pressure-bearing connection device is provided with a second keyway, and the pressure-bearing electrical connection joint is provided with a second fixed key, and the second fixed key is configured to secure the pressure-bearing electrical connection joint stuck in the second keyway of the housing.

12. The instrument pressure-bearing connection assembly according to claim 10, wherein,

The lower guide head of the pressure-bearing connection device of the instrument is provided with a guide key, and the pressure-bearing electrical connection joint is provided with a guide groove, so that the lower guide head can be stuck in another through the guide key of the lower guide head. In the guide groove of the pressure-bearing electrical connection connector of the instrument pressure-bearing connection assembly, the first electrical connector and the fourth electrical connector of two or more instrument pressure-bearing connection assemblies are matched.

13. The instrument pressure-bearing connection assembly according to claim 10, wherein the quick-turn nut is configured to connect the first electrical connector on the back cover of the insulating holder of an instrument pressure-bearing connection assembly with the The fourth electrical connector of the pressure-bearing electrical connection joint of another instrument pressure-bearing connection component is mated with the plug-in connection, so that two or more instrument pressure-bearing connection components are connected end-to-end.

14. The instrument pressure-bearing connection assembly according to claim 10, which is further provided with a first sealing ring, a second sealing ring, a third sealing ring and a fourth sealing ring;

The first sealing ring is configured to seal the pressure-bearing electrical connection joint and the housing, the second sealing ring is configured to seal the lower guide head and the housing, and the third sealing ring is configured to The back cover of the insulating holder is sealed with the lower guide head, the fourth sealing ring is configured to seal the first electrical connector with the back cover of the insulating holder, and

A second retaining ring is provided on the extension between the pressure-bearing electrical connection joint and the front cover of the insulating fixed seat.

15. The instrument pressure-bearing connection component according to claim 10, wherein a fifth sealing ring is provided on the outer periphery of the housing, and the fifth sealing ring is configured to seal between the connected instrument pressure-bearing connection components.