A new type of ultra-high voltage casing head mechanism with optical cable passing through

Abstract

The present invention is applicable to the technical field of metal sealing, and provides a novel ultra-high voltage casing head mechanism with optical cable passing through, comprising a casing body, and also comprising: a cable through-hole, wherein the cable through-hole passes through the hanger body, and grooves are provided at both ends of the cable through-hole, and a rubber sleeve is placed in the groove, and an elastic telescopic part is provided on one side of the rubber sleeve close to the opening of the groove, and a sealing sleeve is provided on the other side of the elastic telescopic part away from the rubber sleeve, and the sealing sleeve is threadedly connected to the inner wall of the groove, and a nut is threadedly connected in the sealing sleeve; the present invention provides a novel ultra-high voltage casing head mechanism with optical cable passing through, and the rubber sleeve cooperates with the nut, which not only increases the fixing strength of the cable sleeve, but also the fit between the rubber sleeve and the cable sleeve further increases the sealing of the cable sleeve.

Description

Technical Field

[0001] The invention belongs to the technical field of metal sealing, and in particular relates to a novel ultra-high voltage casing head mechanism with an optical cable passing through. Background Art

[0002] The purpose of laying optical fiber outside the casing is to provide more accurate data for the next step of mining. The optical cable can be used to monitor the reservoir fracturing transformation and liquid production profile, and the monitoring data can be used to guide the next step of construction in real time to obtain more accurate first-hand information. The construction of optical cable casing operation faces many difficulties. Because the gas measurement of the horizontal section shows good, it is not easy to stabilize the cement slurry during the weight loss period; the well wall of the open hole section is prone to the risk of casing blocking; the long horizontal section results in low displacement efficiency and poor cementing quality.

[0003] A single-layer ultra-high voltage casing head with metal sealing for cable penetration with publication number CN218816320 is provided with a cable through-hole on the second short-circuit, and a cable filler for sealing the cable is provided in the cable through-hole. The inlet and outlet ends of the cable through-hole are both sealed by a core shaft hanger, which solves the sealing problem of the inlet and outlet ends of the cable through-hole. A metal sealing device is provided on the casing head shell on the side of the core shaft hanger at the outlet end of the cable through-hole, and an ultra-high voltage metal seal is adopted to further enhance the sealing effect.

[0004] The above scheme adopts ultra-high pressure metal seal to overcome the problem of reduced sealing effect caused by plastic deformation of the existing elastic sealing mechanism after long-term use, and a cable filler is provided in the cable hole to seal the cable. During long-term use, the metal sealing device is prone to vibration and friction between the cable sheath and the metal sealing device due to external vibration, which then forms a gap between the cable sheath and the metal sealing device, and the fit between the metal sealing device and the cable jacket is low, which leads to leakage of the cable filler in the cable hole, further reducing the sealing effect of the cable.

[0005] In order to avoid the above technical problems, it is necessary to provide a new type of ultra-high voltage casing head mechanism with optical cable passing through to overcome the above defects in the prior art. Summary of the invention

[0006] The purpose of the present invention is to provide a new type of ultra-high voltage casing head mechanism with optical cable passing through, aiming to solve the problem that the fit between the metal sealing device of the existing ultra-high voltage casing head mechanism and the cable jacket is low, thereby causing leakage of cable filler in the cable perforation, further reducing the sealing effect of the cable.

[0007] The present invention is implemented as follows: a novel ultra-high voltage casing head mechanism with an optical cable passing through comprises a casing body, the casing body is fixedly connected with a hanger body, and further comprises:

[0008] A cable through-hole, in which a cable filler for sealing the cable is arranged, the cable through-hole passes through the hanger body, grooves are provided at both ends of the cable through-hole, a rubber sleeve is placed in the groove, an elastic telescopic part is provided on one side of the rubber sleeve close to the opening of the groove, and the inner cavity of the elastic telescopic part can be connected to the air inlet of the rubber sleeve; a sealing sleeve is provided on the other side of the elastic telescopic part away from the rubber sleeve, the sealing sleeve is threadedly connected to the inner wall of the groove, and a nut is threadedly connected in the sealing sleeve;

[0009] An oil groove is provided in an annular manner in the inner wall of the sealing sleeve, a plurality of end holes are provided in an annular manner on the side wall of the oil groove, the end holes are communicated with the inner cavity of the sealing sleeve, a plurality of slide grooves are provided in an annular manner on one side of the oil groove, the slide grooves are communicated with each other, lubricating balls are universally connected on the inner walls of the slide grooves, and a push rod is fixedly provided on one side of the lubricating balls in the slide grooves;

[0010] An oil sealing assembly is slidably and sealably connected between the slide groove and the oil groove. The oil sealing assembly elastically abuts against the inner wall of the oil groove, and the push rod is in contact with the oil sealing assembly.

[0011] According to a further technical solution, the rubber kit includes a metal ring, a rubber ring and a one-way air inlet valve port;

[0012] The rubber ring is arranged on the inner side of the metal ring. The metal ring is provided with a plurality of one-way air inlet valve ports in an annular shape, and all the one-way air inlet valve ports are communicated with the rubber ring.

[0013] According to a further technical solution, the cross section of the end portion of the rubber ring is larger than that of the middle portion.

[0014] According to a further technical solution, the oil sealing assembly includes a plug body and a spring. A boss is provided on the inner wall of the slide groove. The plug body is slidingly and sealingly connected to the inner wall of the slide groove. The plug body is provided with a slope. The slope of the plug body abuts against the boss. The spring is arranged between the inner end surface of the oil groove and the plug body.

[0015] According to a further technical solution, a guide groove is provided in the oil groove, an opening of the guide groove faces the end of the inclined surface of the plug body, and a bottom of the guide groove is connected to the oil groove.

[0016] According to a further technical solution, there are multiple push rods, and the directions of the multiple push rods are different.

[0017] According to a further technical solution, the inner wall of the sealing sleeve is provided with a conical inclined surface, a metal sleeve is abutted between the nut and the conical inclined surface of the sealing sleeve, and the metal sleeve is provided with a plurality of notches in an annular shape.

[0018] According to a further technical solution, the elastic telescopic member is slidably connected to the inner wall of the groove, and the elastic telescopic member is connected to a plurality of sockets, and the sockets correspond one-to-one to the one-way air inlet valve ports.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention provides a novel ultra-high voltage casing head mechanism with optical cable passing through, wherein the rubber set cooperates with the nut, which not only increases the fixing strength of the cable casing, but also the sealing performance of the cable casing is further increased by the rubber set fitting the cable casing.

[0021] The present invention provides a novel ultra-high voltage bushing head mechanism with an optical cable passing through, wherein the lubricating ball can lubricate the surface of the cable bushing, thereby increasing the sealing performance between the cable bushing and the sealing sleeve and preventing the cable bushing from being worn due to external vibration; when the cable bushing and the sealing sleeve vibrate, the oil sealing component releases the seal on the oil groove, and the lubricating oil lubricates downward along the cable bushing, thereby preventing the rubber set from being worn and failing during the sealing process;

[0022] The present invention provides a novel ultra-high voltage bushing head mechanism with an optical cable passing through. The cross section of the rubber ring end is larger than that of the middle part, which not only increases the contact area between the rubber ring and the cable bushing, but also increases the sealing effect. When external vibration causes the cable filler to squeeze the rubber ring, the rubber ring is squeezed toward the end by force, which further increases the squeezing force between the rubber ring and the cable bushing, thereby increasing the sealing performance of the cable bushing.

[0023] The present invention provides a novel mechanism for passing an ultra-high voltage casing head with an optical cable. When the cable casing vibrates, the plug body releases the seal on the oil tank, and the lubricating oil enters the oil tank. The lubricating oil lubricates downward along the cable casing to prevent the rubber kit from being worn and failing during the sealing process. Furthermore, the lubricating oil is replenished to the bottom of the oil tank through the guide groove, and the lubricating oil on the upper side of the oil tank flows out to the end hole, so that the lubricating oil can keep circulating and flowing out, avoiding the long-term failure of the lubricating oil in the oil tank. At the same time, the lubricating oil in the oil tank can buffer the spring and increase the service life of the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the hanger body;

[0026] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of the A area in the middle;

[0027] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of the middle B area;

[0028] Figure 5 for Figure 3 Schematic diagram of the enlarged structure of the middle C area;

[0029] Figure 6 It is a schematic diagram of the structure of the rubber kit;

[0030] Figure 7 It is a schematic diagram of the connection between the sealing sleeve and the nut;

[0031] Figure 8 It is a structural schematic diagram of the elastic telescopic member.

[0032] In the attached drawings: 1. casing body; 2. hanger body; 3. cable penetration; 4. groove; 5. rubber kit; 51. metal ring; 52. rubber ring; 53. one-way air inlet valve port; 6. elastic telescopic part; 7. sealing sleeve; 8. oil sealing assembly; 81. plug body; 82. spring; 9. notch; 10. oil groove; 11. slide groove; 12. lubricating ball; 13. push rod; 14. end hole; 15. nut; 16. metal sleeve; 17. guide groove; 18. oil chamber. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0035] like Figure 1 As shown, a novel ultra-high voltage casing head mechanism with optical cable passing through provided by the present invention comprises a casing body 1, wherein the casing body 1 is fixedly connected with a hanger body 2, and further comprises:

[0036] A cable through hole 3, in which a cable filler for sealing the cable is arranged, the cable through hole 3 passes through the hanger body 2, and grooves 4 are provided at both ends of the cable through hole 3, a rubber sleeve 5 is placed in the groove 4, and an elastic telescopic member 6 is arranged on one side of the rubber sleeve 5 close to the opening of the groove 4, and the inner cavity of the elastic telescopic member 6 can be connected to the air inlet of the rubber sleeve 5; a sealing sleeve 7 is arranged on the other side of the elastic telescopic member 6 away from the rubber sleeve 5, and the sealing sleeve 7 is threadedly connected to the inner wall of the groove 4, and a nut 15 is threadedly connected in the sealing sleeve 7;

[0037] An oil groove 10 is provided in an annular manner in the inner wall of the sealing sleeve 7, and a plurality of end holes 14 are provided in an annular manner on the side wall of the oil groove 10, and the end holes 14 are communicated with the inner cavity of the sealing sleeve 7. A plurality of slide grooves 11 are provided in an annular manner on one side of the oil groove 10, and the slide grooves 11 are communicated with each other, and the slide grooves 11 are communicated with an oil cavity 18, and lubricating balls 12 are universally connected on the inner walls of the slide grooves 11, and a push rod 13 is fixedly provided on one side of the lubricating balls 12 in the slide groove 11;

[0038] An oil sealing assembly 8 is slidably and sealingly connected between the slide groove 11 and the oil groove 10 . The oil sealing assembly 8 elastically abuts against the inner wall of the oil groove 10 , and the push rod 13 is in contact with the oil sealing assembly 8 .

[0039] Working principle:

[0040] When in use, the cable sleeve is passed through the cable perforation 3, and then the sealing sleeve 7 is rotated. The sealing sleeve 7 moves into the groove 4 through threaded transmission, and the sealing sleeve 7 pushes the elastic telescopic member 6, and the elastic telescopic member 6 contracts. At this time, the elastic telescopic member 6 injects air pressure into the rubber sleeve 5. Under the action of the air pressure, the rubber sleeve 5 elastically abuts against the cable sleeve, thereby sealing and fixing the cable sleeve; then the nut 15 is rotated, and the nut 15 contracts into the sealing sleeve 7, and one end of the cable sleeve is further sealed and fixed by the nut 15; the rubber sleeve 5 cooperates with the nut 15, which not only increases the fixing strength of the cable sleeve, but also the fit between the rubber sleeve 5 and the cable sleeve further increases the sealing of the cable sleeve;

[0041] The lubricating ball 12 can lubricate the surface of the cable sheath, increase the sealing between the cable sheath and the sealing sleeve 7, and prevent the cable sheath from being worn due to external vibration; when the cable sheath and the sealing sleeve 7 vibrate, the lubricating ball 12 pushes the oil sealing assembly 8 through the push rod 13, and the oil sealing assembly 8 releases the seal on the oil groove 10. At this time, the lubricating oil in the oil chamber 18 enters the oil groove 10 through the slide groove 11, and then the lubricating oil flows out through the end hole 14, and the lubricating oil lubricates downward along the cable sheath, avoiding the rubber kit 5 from being worn and failing during the sealing process.

[0042] In the embodiment of the present invention, Figure 5-Figure 6 As shown, as a preferred embodiment of the present invention, the rubber kit 5 includes a metal ring 51, a rubber ring 52 and a one-way air intake valve port 53; the rubber ring 52 is arranged on the inner side of the metal ring 51, and the metal ring 51 is annularly provided with multiple one-way air intake valve ports 53, and all the one-way air intake valve ports 53 are connected to the rubber ring 52; the cross-section of the end of the rubber ring 52 is larger than that of the middle part.

[0043] When the elastic expansion member 6 contracts, the air inside the elastic expansion member 6 enters the rubber ring 52 through the one-way air inlet valve port 53. At this time, the rubber ring 52 is tightly sealed to the cable casing. The one-way air inlet valve port 53 can prevent air leakage in the elastic expansion member 6, thereby affecting the sealing effect. Furthermore, the cross-section of the end of the rubber ring 52 is larger than that of the middle part, which not only increases the contact area between the rubber ring 52 and the cable casing, but also increases the sealing effect. Moreover, when external vibration causes the cable filler to squeeze the rubber ring 52, the rubber ring 52 is squeezed toward the end by force, which further increases the squeezing force between the rubber ring 52 and the cable casing, thereby increasing the sealing of the cable casing.

[0044] In the embodiment of the present invention, Figure 4 As shown, as a preferred embodiment of the present invention, the oil sealing assembly 8 includes a plug body 81 and a spring 82, the inner wall of the slide groove 11 is provided with a boss, the plug body 81 is slidably sealed with the inner wall of the slide groove 11, the plug body 81 is provided with an inclined surface, the inclined surface of the plug body 81 abuts against the boss, and the spring 82 is arranged between the inner end surface of the oil groove 10 and the plug body 81; a guide groove 17 is opened in the oil groove 10, the opening of the guide groove 17 is opposite to the end of the inclined surface of the plug body 81, and the bottom of the guide groove 17 is connected with the oil groove 10; there are multiple push rods 13, and the directions of the multiple push rods 13 are different;

[0045] In the oil sealing assembly 8, when the cable sheath vibrates, the cable sheath pushes the push rod 13 to rotate, and the push rod 13 pushes the plug body 81. The plug body 81 releases the seal of the oil groove 10, and the lubricating oil enters the oil groove 10. Then the lubricating oil flows out through the end hole 14, and the lubricating oil lubricates downward along the cable sheath to prevent the rubber kit 5 from being worn and failing during the sealing process; multiple push rods 13 can stir the lubricating oil at the same time to increase the fluidity of the lubricating oil, so that the rubber kit 5 can be lubricated and protected in time when the cable sheath vibrates; further, the lubricating oil is replenished to the bottom of the oil groove 10 through the guide groove 17, and the lubricating oil on the upper side of the oil groove 10 flows out to the end hole 14, so that the lubricating oil can keep circulating and flowing out, avoiding the long-term failure of the lubricating oil in the oil groove 10. At the same time, the lubricating oil in the oil groove 10 can buffer the spring 82 to increase the service life of the spring 82.

[0046] In the embodiment of the present invention, Figure 3 As shown, as a preferred embodiment of the present invention, the inner wall of the sealing sleeve 7 is provided with a conical inclined surface, a metal sleeve 16 is abutted between the nut 15 and the conical inclined surface of the sealing sleeve 7, and the metal sleeve 16 is annularly provided with a plurality of notches 9; the nut 15 pushes the sealing sleeve 7, and the sealing sleeve 7 is clamped toward the middle along the conical inclined surface, thereby further improving the sealing performance of the cable sheath.

[0047] The elastic telescopic member 6 is slidably connected to the inner wall of the groove 4, and the elastic telescopic member 6 is connected with multiple sockets, which correspond one-to-one to the one-way air inlet valve ports 53; the connection between the inner cavity of the elastic telescopic member 6 and the one-way air inlet valve port 53 is achieved by connecting the sockets with the one-way air inlet valve port 53.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A novel ultra-high voltage casing head mechanism with an optical cable passing therethrough, comprising a casing body (1), wherein the casing body (1) is fixedly connected to a hanger body (2), and characterized in that: Also includes: A cable through hole (3), the cable through hole (3) passes through the hanger body (2), grooves (4) are provided at both ends of the cable through hole (3), a rubber sleeve (5) is placed in the groove (4), an elastic telescopic member (6) is provided on one side of the rubber sleeve (5) close to the opening of the groove (4), the inner cavity of the elastic telescopic member (6) can be connected to the air inlet of the rubber sleeve (5); a sealing sleeve (7) is provided on the other side of the elastic telescopic member (6) away from the rubber sleeve (5), the sealing sleeve (7) is threadedly connected to the inner wall of the groove (4), and a nut (15) is threadedly connected in the sealing sleeve (7); An oil groove (10) is provided in an annular shape in the inner wall of the sealing sleeve (7); a plurality of end holes (14) are provided in an annular shape on the side wall of the oil groove (10); the end holes (14) are communicated with the inner cavity of the sealing sleeve (7); a plurality of slide grooves (11) are provided in an annular shape on one side of the oil groove (10); the slide grooves (11) are communicated with each other; lubricating balls (12) are universally connected on the inner walls of the slide grooves (11); a push rod (13) is fixedly provided on one side of the lubricating balls (12) in the slide groove (11); An oil sealing assembly (8) is slidably and sealingly connected between the slide groove (11) and the oil groove (10); the oil sealing assembly (8) elastically abuts against the inner wall of the oil groove (10); and the push rod (13) is in contact with the oil sealing assembly (8); The oil sealing assembly (8) comprises a plug body (81) and a spring (82); a boss is provided on the inner wall of the slide groove (11); the plug body (81) is slidably sealedly connected to the inner wall of the slide groove (11); the plug body (81) is provided with an inclined surface; the inclined surface of the plug body (81) abuts against the boss; and the spring (82) is arranged between the inner end surface of the oil groove (10) and the plug body (81); A guide groove (17) is provided in the oil groove (10), the opening of the guide groove (17) is directly opposite to the end of the inclined surface of the plug body (81), and the bottom of the guide groove (17) is in communication with the oil groove (10).

2. The novel ultra-high voltage casing head mechanism with optical cable passing through according to claim 1 is characterized in that: The rubber set (5) comprises a metal ring (51), a rubber ring (52) and a one-way air intake valve port (53); The rubber ring (52) is arranged on the inner side of the metal ring (51); the metal ring (51) is provided with a plurality of one-way air intake valve ports (53) in an annular shape, and all the one-way air intake valve ports (53) are in communication with the rubber ring (52).

3. The novel ultra-high voltage casing head mechanism with optical cable passing through according to claim 2 is characterized in that: The cross section of the end of the rubber ring (52) is larger than that of the middle part.

4. The novel ultra-high voltage casing head mechanism with optical cable passing through according to claim 1 is characterized in that: There are a plurality of push rods (13), and the directions of the plurality of push rods (13) are different.

5. The novel ultra-high voltage casing head mechanism with optical cable passing through according to claim 1 is characterized in that: The inner wall of the sealing sleeve (7) is provided with a conical inclined surface, a metal sleeve (16) is abutted between the nut (15) and the conical inclined surface of the sealing sleeve (7), and the metal sleeve (16) is provided with a plurality of notches (9) in an annular shape.

6. The novel ultra-high voltage casing head mechanism with optical cable passing through according to claim 2 is characterized in that: The elastic telescopic member (6) is slidably connected to the inner wall of the groove (4); the elastic telescopic member (6) is connected to a plurality of sockets, and the sockets correspond one-to-one to the one-way air inlet valve ports (53).

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