Cable pipe orifice sealing plug

Abstract

The utility model discloses a cable pipe orifice sealing plug, and particularly relates to the technical field of cable pipe orifice sealing plugs, the cable pipe orifice sealing plug comprises a first connecting plate mounted at a cable pipe orifice, a sealing mechanism for sealing the cable pipe orifice is arranged at the bottom of the first connecting plate, and the sealing mechanism comprises a support frame arranged in the first connecting plate; an elastic sealing ring is arranged in the supporting frame, a threaded rod is movably connected to the interior of the supporting frame through a bearing, the top end of the threaded rod penetrates through the supporting frame and extends out of the top of the first connecting plate, the threaded rod is in threaded connection with the first connecting plate, and a second connecting plate is fixedly arranged at the top end of the threaded rod; the outer wall of the elastic sealing ring makes contact with the interior of the cable pipe, and the first connecting plate is matched with the cable pipe. According to the utility model, the elastic sealing ring can be detached from the supporting frame through the detaching mechanism and replaced with a new elastic sealing ring, the service life of the cable connector is prolonged, the second connecting plate can be fixed through the fixing mechanism, and the sealing mechanism is prevented from falling off from the interior of the cable tube.

Description

Technical Field

[0001] The utility model relates to the technical field of cable pipe opening sealing plugs, in particular to a cable pipe opening sealing plug. Background Art

[0002] The cable nozzle for oil wells refers to the part used to install and fix the cable entering the oil well. This nozzle is usually located at the top or side of the oil well. It is used to protect the cable from damage by the external environment and ensure that the cable can safely pass through the well wall into the well. This nozzle design must be able to withstand the high temperature, high pressure and corrosive environment inside the oil well, but the sealing performance of the cable nozzle is also very important. The cable nozzle sealing plug for oil wells is a device used to ensure the sealing between the cable and the wellhead. The function of the cable nozzle sealing plug for oil wells is mainly to ensure the sealing performance between the cable and the wellhead, prevent oil and gas leakage and external pollutants from entering the well. This sealing plug usually has good oil resistance and high temperature resistance to adapt to the harsh conditions of the oil well environment.

[0003] For example, a sealing plug for a cable tube opening provided in a Chinese patent application with application number 202020149713.5 includes a chassis, a pressure plate and an elastic sealing ring. The pressure plate and the chassis are connected by a connecting rod and a tightening nut to clamp the elastic sealing ring between the pressure plate and the chassis. The outer circumferential shape of the elastic sealing ring is adapted to the inner wall shape of the cable tube opening. The pressure plate is a conical disk body with a large top diameter and a small bottom diameter. The elastic sealing ring is a conical sleeve ring with a large top diameter and a small bottom diameter. The bottom surface of the conical sleeve touches the top surface of the chassis. The outer diameter of the bottom surface of the pressure plate is smaller than the inner diameter of the top surface of the conical sleeve, and the outer diameter of the top surface of the pressure plate is larger than the inner diameter of the top surface of the conical sleeve. The advantage of this technical solution is that the top of the elastic sealing ring is not in contact with the pressure plate but is sleeved on the pressure plate. Since the pressure plate is a conical disk body with a large top diameter and a small bottom diameter, It can ensure that the top opening of the elastic sealing ring is tightly fitted with the pressure plate, and the elastic sealing ring is firmly connected to the pressure plate and is not easy to loosen; when the pressure plate is pushed toward the chassis by the tightening nut, the elastic sealing ring is deformed, and the outer wall diameter of the elastic sealing ring gradually increases, so that the outer wall of the elastic sealing ring is tightly attached to the inner wall of the cable tube, and the degree of fit between the elastic sealing ring and the inner wall of the cable tube is higher than that of the prior art, and the fitting area between the elastic sealing ring and the inner wall of the cable tube is also larger than that of the prior art, and the sealing effect of the cable tube opening is very good; buckle protrusions can be preferably provided at circumferential intervals on the top surface of the pressure plate, and side wall annular grooves that can be snapped with the buckle protrusions are provided on the side walls of the tightening nut, and the tightening nut is not only connected to the center rod through a thread, but also the side wall annular groove of the tightening nut is snapped with the buckle protrusion, so that the tightening nut is firmly connected and not easy to fall off, thereby maintaining the sealing effect of the cable tube opening.

[0004] However, the following problems still exist in this technical solution: in this technical solution, the elastic sealing ring and the chassis are fixedly connected. When the elastic sealing ring is damaged, it cannot be removed from the chassis, and the elastic sealing ring cannot be replaced alone, and needs to be replaced as a whole, resulting in a short service life of the chassis. Utility Model Content

[0005] To this end, an embodiment of the utility model provides a cable pipe opening sealing plug to solve the problem in the prior art that the elastic sealing ring cannot be removed from the chassis and replaced, resulting in a short service life of the chassis.

[0006] In order to achieve the above purpose, the embodiment of the utility model provides the following technical solutions:

[0007] A cable pipe opening sealing plug comprises a first connecting plate installed at the cable pipe opening, wherein a sealing mechanism for sealing the cable pipe opening is provided at the bottom of the first connecting plate.

[0008] Furthermore, the sealing mechanism includes a support frame arranged inside the first connecting plate, an elastic sealing ring is arranged inside the support frame, a threaded rod is movably connected to the inside of the support frame through a bearing, the top end of the threaded rod passes through the support frame and extends out of the top of the first connecting plate, the threaded rod is connected to the first connecting plate by threads, the outer wall of the elastic sealing ring is in contact with the inside of the cable pipe, and the first connecting plate is adapted to the cable pipe for sealing the cable pipe opening to ensure the sealing performance between the cable and the wellhead and prevent oil and gas leakage and external pollutants from entering the well.

[0009] Furthermore, a second connecting plate is fixedly provided on the top end of the threaded rod for driving the threaded rod to rotate.

[0010] Furthermore, a disassembly mechanism is provided on the outside of the support frame for facilitating the disassembly of the elastic sealing ring from the support frame, and the disassembly mechanism includes two first limit plates arranged on both sides of the elastic sealing ring, and limit grooves are provided on both sides of the inside of the support frame, and two second threaded holes are provided on the first limit plate, and two first threaded holes are provided on both sides of the support frame, and the first threaded holes and the second threaded holes are connected to each other with the same first bolt threadedly connected thereto, which is used to facilitate the disassembly of the elastic sealing ring from the support frame, facilitate the replacement of the elastic sealing ring, and extend the service life of the utility model.

[0011] Furthermore, a fixing mechanism for fixing the second connecting plate is provided on the top of the first connecting plate, and the fixing mechanism includes two second limiting plates arranged on both sides of the second connecting plate. A plurality of fourth threaded holes are opened on the top of the first connecting plate, and a third threaded hole is opened on the top of the second limiting plate. The fourth threaded holes and the third threaded holes that are connected are internally threadedly connected with the same second bolt for fixing the second connecting plate. The second connecting plate cannot rotate, and the sealing mechanism can be prevented from falling off from the cable tube.

[0012] The utility model embodiment has the following advantages:

[0013] 1. Place the support frame inside the cable tube, and then rotate the second connecting plate. The second connecting plate can drive the threaded rod to rotate, and the threaded rod can drive the support frame to shrink. When the support frame shrinks, it can squeeze the elastic sealing ring, and the elastic sealing ring is deformed. The outer wall diameter of the elastic sealing ring gradually increases, so that the outer wall of the elastic sealing ring is tightly attached to the inner wall of the cable tube, and the cable tube is sealed to prevent sewage and rainwater from flowing into the cable tube;

[0014] 2. When the elastic sealing ring is damaged and needs to be replaced, the first bolt is rotated to rotate the first bolt out of the first threaded hole and the second threaded hole, and then the first limiting plate on the top of the elastic sealing ring is pulled out from the limiting groove on the support frame, so that the elastic sealing ring can be removed from the support frame and replaced with a new elastic sealing ring, thereby extending the service life of the utility model;

[0015] 3. In order to prevent the second connecting plate from rotating, rotate the second bolt and rotate the second bolt to the inside of the third threaded hole and the fourth threaded hole. The second limiting plate can be fixed on the top of the first connecting plate, so that the second connecting plate cannot rotate, thereby preventing the sealing mechanism from falling off from the cable tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0018] Figure 1 This is a schematic diagram of the structure of the sealing mechanism provided by the utility model being located inside the cable tube;

[0019] Figure 2 A cross-sectional view of the cable tube provided by the utility model;

[0020] Figure 3 A bottom view provided for the utility model;

[0021] Figure 4 A structural schematic diagram of the sealing mechanism provided by the utility model;

[0022] Figure 5 A structural schematic diagram of the disassembly mechanism provided by the utility model;

[0023] Figure 6 This is a structural schematic diagram of the fixing mechanism provided by the utility model.

[0024] In the figure:

[0025] 1 first connecting plate;

[0026] 2 sealing mechanism, 201 support frame, 202 elastic sealing ring, 203 threaded rod, 204 second connecting plate;

[0027] 3 disassembly mechanism, 301 first limiting plate, 302 limiting groove, 303 first threaded hole, 304 second threaded hole, 305 first bolt;

[0028] 4 fixing mechanism, 401 second limiting plate, 402 third threaded hole, 403 fourth threaded hole, 404 second bolt. DETAILED DESCRIPTION

[0029] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The utility model provides Figure 1-6 A cable pipe opening sealing plug shown in the figure comprises a first connecting plate 1 mounted on the cable pipe opening, and a sealing mechanism 2 for sealing the cable pipe opening is provided at the bottom of the first connecting plate 1;

[0031] like Figure 4 As shown, the sealing mechanism 2 includes a support frame 201 arranged inside the first connecting plate 1, an elastic sealing ring 202 is arranged inside the support frame 201, a threaded rod 203 is movably connected to the support frame 201 through a bearing, the top of the threaded rod 203 penetrates the support frame 201 and extends out of the top of the first connecting plate 1, the threaded rod 203 is connected to the first connecting plate 1 through threads, a second connecting plate 204 is fixedly arranged on the top of the threaded rod 203, the outer wall of the elastic sealing ring 202 is in contact with the inside of the cable tube, and the first connecting plate 1 is adapted to the cable tube;

[0032] The support frame 201 is placed inside the cable pipe, and then the second connecting plate 204 is rotated. The second connecting plate 204 can drive the threaded rod 203 to rotate, and the threaded rod 203 can drive the support frame 201 to contract. When the support frame 201 contracts, it can squeeze the elastic sealing ring 202, and the elastic sealing ring 202 is deformed. The outer wall diameter of the elastic sealing ring 202 gradually increases, so that the outer wall of the elastic sealing ring 202 is tightly attached to the inner wall of the cable pipe, preventing oil and gas leakage and external pollutants from entering the oil well.

[0033] like Figure 5 As shown, the support frame 201 is provided with a disassembly mechanism 3 on the outside for facilitating the disassembly of the elastic sealing ring 202 from the support frame 201, and the disassembly mechanism 3 includes two first limit plates 301 arranged on both sides of the elastic sealing ring 202, and the support frame 201 has limit grooves 302 on both sides inside, and the first limit plates 301 have two second threaded holes 304, and the support frame 201 has two first threaded holes 303 on both sides, and the first threaded holes 303 and the second threaded holes 304 that are connected are internally threadedly connected with the same first bolt 305;

[0034] When the elastic sealing ring 202 is damaged and needs to be replaced, the first bolt 305 is rotated to rotate the first bolt 305 out of the first threaded hole 303 and the second threaded hole 304, and then the first limiting plate 301 on the top of the elastic sealing ring 202 is pulled out from the limiting groove 302 on the support frame 201, so that the elastic sealing ring 202 can be removed from the support frame 201 and replaced with a new elastic sealing ring 202, thereby extending the service life of the utility model;

[0035] When replacing the new elastic sealing ring 202, insert the first limiting plate 301 on the top of the elastic sealing ring 202 into the limiting groove 302 on the support frame 201, and then rotate the first bolt 305 to the first threaded hole 303 and the second threaded hole 304, so that the elastic sealing ring 202 can be fixed on the support frame 201 for subsequent use.

[0036] like Figure 6 As shown, a fixing mechanism 4 for fixing the second connecting plate 204 is provided on the top of the first connecting plate 1, and the fixing mechanism 4 includes two second limiting plates 401 provided on both sides of the second connecting plate 204, a plurality of fourth threaded holes 403 are provided on the top of the first connecting plate 1, and a third threaded hole 402 is provided on the top of the second limiting plate 401, and the fourth threaded holes 403 and the third threaded holes 402 that are connected are internally threadedly connected with the same second bolt 404;

[0037] After the second connecting plate 204 is rotated, in order to prevent the second connecting plate 204 from rotating, the second bolt 404 is rotated and the second bolt 404 is rotated to the inside of the third threaded hole 402 and the fourth threaded hole 403. The second limiting plate 401 can be fixed on the top of the first connecting plate 1, so that the second connecting plate 204 cannot rotate, thereby preventing the sealing mechanism 2 from falling off from the cable tube.

[0038] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A cable pipe opening sealing plug, comprising a first connecting plate (1) mounted on the cable pipe opening, characterized in that: A sealing mechanism (2) for sealing the cable pipe opening is provided at the bottom of the first connecting plate (1); The sealing mechanism (2) comprises a support frame (201) arranged inside the first connecting plate (1), and an elastic sealing ring (202) is arranged inside the support frame (201); The support frame (201) is provided with a disassembly mechanism (3) on the outside thereof for facilitating the disassembly of the elastic sealing ring (202) from the support frame (201); The disassembly mechanism (3) comprises two first limit plates (301) arranged on both sides of the elastic sealing ring (202), the support frame (201) has limit grooves (302) on both sides, the first limit plate (301) has two second threaded holes (304), the support frame (201) has two first threaded holes (303) on both sides, and the first threaded holes (303) and the second threaded holes (304) are connected to each other and are internally threadedly connected with the same first bolt (305).

2. A cable pipe opening sealing plug according to claim 1, characterized in that: A threaded rod (203) is movably connected to the interior of the support frame (201) via a bearing, and the top end of the threaded rod (203) passes through the support frame (201) and extends out of the top of the first connecting plate (1).

3. A cable pipe opening sealing plug according to claim 2, characterized in that: The threaded rod (203) is connected to the first connecting plate (1) via threads.

4. A cable pipe opening sealing plug according to claim 1, characterized in that: The limiting groove (302) and the first threaded hole (303) are matched.

5. A cable pipe opening sealing plug according to claim 2, characterized in that: A second connecting plate (204) is fixedly provided on the top end of the threaded rod (203).

6. A cable pipe opening sealing plug according to claim 4, characterized in that: A fixing mechanism (4) for fixing the second connecting plate (204) is provided on the top of the first connecting plate (1); The fixing mechanism (4) comprises two second limiting plates (401) arranged on both sides of the second connecting plate (204); a plurality of fourth threaded holes (403) are provided on the top of the first connecting plate (1); a third threaded hole (402) is provided on the top of the second limiting plate (401); the fourth threaded holes (403) and the third threaded holes (402) which are connected are internally threadedly connected with the same second bolt (404).

7. A cable pipe opening sealing plug according to claim 1, characterized in that: The outer wall of the elastic sealing ring (202) is in contact with the interior of the cable tube.

8. The cable pipe opening sealing plug according to claim 1, characterized in that: The first connecting plate (1) is adapted to the cable tube.

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