CN210490418U - Cable sealing device - Google Patents

Abstract

The utility model discloses a cable sealing device belongs to the cable installation field. The cable sealing device comprises a first threading pipe, a second threading pipe, a sealing assembly, a first flange plate and a second flange plate. The hole of first threading pipe is round platform form, and seal assembly is the round platform body that corresponds, and has elasticity, and the great one end of diameter at the hole of first threading pipe is fixed to first ring flange, and the second ring flange is fixed in second threading pipe one end. The sealing assembly is tightly attached to the inner wall of the first threading pipe by pressing the sealing assembly through the second flange plate, and the inner wall of a cable hole in the sealing assembly is tightly attached to a cable, so that the sealing effect is realized; simultaneously seal assembly does not laminate with the inner wall of second threading pipe, avoids twisting each other between two threading pipes to drive seal assembly and twists, causes seal assembly damaged, influences sealed effect, avoids seal assembly to drive the cable conductor and twists simultaneously, causes the insulating skin damage of cable conductor.

Description

Cable sealing device

Technical Field

The utility model relates to a cable installation field, in particular to cable sealing device.

Background

In oilfield production operations natural gas is produced and some of the gas in the reservoir, such as natural gas, enters the annulus between the tubing and the production casing, and this gas is referred to as casing gas. The casing gas can overflow from the bottom of the electric pump well to the top of the electric pump well along the cable pipe due to the pressure. The casing gas is recyclable but provided to seal the wellhead of the electric pump well. Can set up cable sealing device at the well head of electric pump well in oil production and realize above-mentioned sealed, the cable conductor is located cable sealing device simultaneously, avoids the natural gas erosion cable conductor that produces in the oil production.

The cable sealing device of the well head of the existing electric pump well comprises an upper pipe fitting and a lower pipe fitting which are arranged oppositely, threads which are matched with each other are arranged at the joint of the upper pipe fitting and the lower pipe fitting, a cable is positioned in a through hole of the upper pipe fitting and the lower pipe fitting, and a sealing ring is arranged between the cable and the pipe fitting. The sealing ring has elasticity, and because the external diameter of sealing ring is greater than the pipe fitting internal diameter to the laminating is on the pipe fitting inner wall. In-process that upper and lower pipe fitting was screwed, can closely laminate with the sealing washer when upper and lower pipe fitting extrusion sealing washer, so upper and lower pipe fitting can drive respectively and twist together with the sealing washer of oneself laminating part, and the opposite direction of twisting of upper and lower pipe fitting, and the opposite direction of twisting at consequently sealing washer both ends to cause the sealing washer extrusion cable conductor, make closely laminating between cable conductor and the sealing washer, realize the sealed to the cable conductor.

The twisting directions of the two ends of the sealing ring are opposite, so that the sealing ring is easily damaged, and the sealing effect is influenced. Meanwhile, the sealing ring can be twisted while the cable attached to the sealing ring is twisted, so that the insulation skin of the cable is easily damaged.

SUMMERY OF THE UTILITY MODEL

The utility model provides a cable sealing device can strengthen cable sealing device's leakproofness, prevents that the insulating skin of sealing washer and cable conductor from damaging, avoids the sealed problem that does not strictly cause of cable sealing device, technical scheme is as follows:

the embodiment of the utility model provides a cable sealing device, which comprises a first threading pipe, a second threading pipe, a sealing component, a first flange plate and a second flange plate which are arranged oppositely;

the inner hole of the first threading pipe is in a circular truncated cone shape, the sealing assembly is a circular truncated cone body corresponding to the inner hole of the first threading pipe, and the sealing assembly is positioned in the first threading pipe;

the first flange plate is fixed at one end of the inner hole of the first threading pipe, which has a larger diameter, the second flange plate is fixed at one end of the second threading pipe, the first flange plate and the second flange plate are detachably connected, and the inner diameter of the second flange plate is smaller than the diameter of one end of the sealing assembly, which is in contact with the second flange plate;

the sealing component is provided with a cable hole penetrating through the bottom surface and the surface of the sealing component, and the sealing component is elastic;

the sum of the height of the first threading pipe and the thickness of the first flange plate is smaller than the height of the sealing assembly, and the diameter of one end, extending out of the first flange plate, of the sealing assembly is larger than the inner diameter of the first flange plate.

In one implementation of the present invention, the sealing assembly includes a multi-flap sealing strip, and any cross section of the sealing strip in a direction perpendicular to a height direction of the sealing strip is fan-shaped;

the sealing strip is provided with a semicircular groove arranged along the height direction on the side surface parallel to the height direction;

the semicircular grooves of the two adjacent sealing strips correspond to each other in position and form the cylindrical cable hole.

In an implementation of the present invention, the radius of the semicircular groove is smaller than the radius of the cable.

The utility model discloses an among the implementation, semicircular groove's radius with the difference range of the radius of cable conductor is between 0.5mm to 1.0 mm.

In an implementation manner of the present invention, the second flange plate further has a circular groove, the groove is concentrically arranged with the through hole of the second flange plate, and the groove is located on a surface of the second flange plate close to the first flange plate;

the diameter of the groove is larger than or equal to that of one end of the sealing component, which is in contact with the groove;

the sum of the height of the first threading pipe, the thickness of the first flange plate and the depth of the groove is smaller than the height of the sealing assembly.

In one implementation of the present invention, the difference between the diameter of the sealing component and the end of the groove contacting with the diameter of the groove is less than or equal to 2 mm.

In one implementation of the present invention, the cable sealing device further comprises a shielding ring;

the shielding ring is arranged on the outer side surface of the second flange plate along the circumferential direction of the second flange plate, and the shielding ring faces the first flange plate;

the inner diameter of the blocking ring is larger than or equal to the outer diameter of the first flange plate.

The utility model discloses an among the implementation, first threading pipe includes threading pipe interface, threading pipe interface is fixed the less one end of diameter of the hole of first threading pipe, threading pipe interface has the external screw thread.

In one implementation of the present invention, the first flange plate has screw through holes around it, and the second flange plate has bolt through holes corresponding to the screw through holes one by one around it;

the cable sealing device further comprises a bolt communicating the threaded through hole and the bolt through hole.

In an implementation of the present invention, the sealing assembly is a silicone rubber sealing assembly.

The embodiment of the utility model provides a beneficial effect that technical scheme brought is:

when the cable conductor is installed at the well mouth of the electric pump well, the cable conductor extending out of the cable pipe firstly passes through the first threading pipe and the first flange plate, then the first threading pipe is installed on the cable pipe, then the cable conductor passes through the cable hole of the sealing assembly, then the sealing assembly is placed into the first threading pipe, and then the cable conductor passes through the second flange plate and the second threading pipe. And pressing the second flange plate on the sealing component, and finally fixing the first flange plate and the second flange plate. The sum of the height of the first threading pipe and the thickness of the first flange plate is less than the height of the sealing assembly, so that the surface of the mounted sealing assembly protrudes out of the surface of the first flange plate; the second ring flange can support the seal assembly towards the one end that first ring flange was kept away from to first through wires pipe and press, because the hole of first through wires pipe is the round platform shape, seal assembly is the round platform body corresponding with the hole of first through wires pipe, and the great one end of diameter at the hole of first through wires pipe is fixed to first ring flange, the second ring flange can support the seal assembly towards the less one end of hole diameter of first through wires pipe and press promptly, because seal assembly has elasticity, so seal assembly can closely laminate with the inner wall of first through wires pipe, when the inner wall extrusion seal assembly of first through wires pipe, seal assembly's cable hole also can extrude the cable conductor, make the inner wall in cable hole closely laminate with the cable conductor, thereby realize the sealed to the cable conductor. And sealing component does not have the inner wall laminating with the second threading pipe, drives the sealing component with first threading pipe and second threading laminating and twists towards opposite direction when avoiding first threading pipe and second threading pipe to twist towards opposite direction, causes sealing component damage, influences sealed effect, avoids sealing component to drive the cable conductor simultaneously and twists, causes the insulating skin damage of cable conductor.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a perspective structural view of a cable sealing device according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a cable sealing device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a sealing assembly according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a sealing strip according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Fig. 1 is a perspective view of a cable sealing device according to an embodiment of the present invention. Referring to fig. 1, the cable sealing device comprises a first conduit 101, a second conduit 102, a sealing member 103, a first flange 104 and a second flange 105. The first flange 104 and the second flange 105 are oppositely arranged, and the first flange 104 and the second flange 105 are detachably connected.

Fig. 2 is a cross-sectional view of a cable sealing device according to an embodiment of the present invention. Referring to fig. 2, an inner hole of the first threading tube 101 is in a circular truncated cone shape. In order to clearly show the internal structure of the cable sealing device, the sealing assembly 103 inside the first conduit 101 is omitted in fig. 2, in practice the sealing assembly 103 is located inside the first conduit 101.

Fig. 3 is a schematic structural diagram of a sealing assembly according to an embodiment of the present invention. Referring to fig. 3, the sealing member 103 is a circular truncated cone corresponding to the inner hole of the first conduit 101.

Referring to fig. 1 again, the first flange 104 is fixed at one end of the inner hole of the first threading pipe 101 with a larger diameter, the second flange 105 is fixed at one end of the second threading pipe 102, the sealing assembly 103 is positioned in the first threading pipe 101, and the sum of the height of the first threading pipe 101 and the thickness of the first flange 104 is smaller than the height of the sealing assembly 103. The inner diameter of the second flange 105 is smaller than the diameter of the end of the seal assembly 103 in contact with the second flange 105, and the diameter of the end of the seal assembly 103 extending beyond the first flange 104 is larger than the inner diameter of the first flange 104.

Referring again to fig. 3, the seal assembly 103 has cable holes 131 through the bottom and surface of the seal assembly 103. The seal member 103 is a seal member having elasticity.

The first threading pipe 101 and the first flange 104 form the lower half part of the cable sealing device and are installed on an underground cable pipe, and the second threading pipe 102 and the second flange 105 form the upper half part of the cable sealing device and are matched with an above-ground cable pipe. Meanwhile, the lower half part and the upper half part of the cable sealing device are matched to seal the cable. The sealing assembly 103 is used for sealing the cable wires, and the cable holes 131 are used for passing through the cable wires.

The inner hole of the first threading pipe 101 is arranged to be in a circular truncated cone shape, and the first flange plate 104 is fixed at the end, with the larger diameter, of the inner hole of the first threading pipe 101, namely, the inner diameter of the first threading pipe 101 facing the first flange plate 104 is larger than the inner diameter of the first threading pipe 101 far away from the first flange plate 104. The corresponding sealing assembly 103 is a circular truncated cone corresponding to the inner hole of the first threading pipe 101, so that when the sealing assembly 103 is placed into the first threading pipe 101, the part with the smaller outer diameter of the sealing assembly 103 firstly enters the part with the larger inner diameter of the first threading pipe 101, and the sealing assembly 103 is more convenient to install.

When the cable sealing device is used, a cable extending out of an underground cable pipe firstly passes through the first threading pipe 101 and the first flange 104, then the first threading pipe 101 is installed on the underground cable pipe, then the cable passes through the cable hole 131 of the sealing component 103, then the sealing component 103 is placed in the first threading pipe 101, then the cable passes through the second flange 105 and the second threading pipe 102, then the second flange 105 is pressed on the sealing component 103, then the first flange 101 and the second flange 102 are fixed, and finally the cable passing out of the second threading pipe 102 enters the cable pipe on the ground.

Since the sum of the height of the first conduit 101 and the thickness of the first flange 104 is less than the height of the sealing member 103, the surface of the installed sealing member 103 protrudes beyond the surface of the first flange 104; because the inner diameter of the second flange 105 is smaller than the diameter of the end of the sealing component 103, which is in contact with the second flange 105, when the second flange 105 is pressed on the sealing component 103, the sealing component 103 cannot enter the inner hole of the second flange 105, so that the second flange 105 can be pressed on the sealing component 103, and the contact part of the second flange 105 and the sealing component 103 is pressed and sealed; the second flange plate 105 can support the sealing assembly 103 towards the end of the first threading pipe 101 far away from the first flange plate 104, because the inner hole of the first threading pipe 101 is in a circular truncated cone shape, the sealing assembly 103 is a circular truncated cone corresponding to the inner hole of the first threading pipe 101, and the first flange plate 104 is fixed at the larger end of the diameter of the inner hole of the first threading pipe 101, namely the second flange plate 105 can support the sealing assembly 103 towards the smaller end of the diameter of the inner hole of the first threading pipe 104, the inner wall of the first threading pipe 104 can extrude the sealing assembly 103, the sealing assembly 103 has elasticity, the sealing assembly 103 can be tightly attached to the inner wall of the first threading pipe 104, when the inner wall of the first threading pipe 104 extrudes the sealing assembly 103, the sealing assembly 103 can also extrude the cable in the cable hole 131, so that the inner wall of the cable hole 131 is tightly attached to the cable, thereby realizing the sealing of the cable.

Because the diameter of the end of the sealing component 103 extending out of the first flange 104 is larger than the inner diameter of the first flange 104, when the second flange 105 presses the sealing component 103 against the end of the first flange 104 with smaller inner hole diameter, the diameter of the sealing component 103 at the contact position with the inner wall of the first flange 104 is increased, so that the sealing component 103 is also pressed by the inner wall of the first flange, and sealing can be realized at the contact position of the first flange 104 and the sealing component 103.

And the sealing assembly 103 is not attached to the inner wall of the second threading pipe 102, so that the sealing assembly 103 attached to the first threading pipe 101 and the second threading pipe 102 can be prevented from being damaged and the sealing effect is prevented from being influenced when the sealing assembly 103 is twisted in the opposite direction when the first threading pipe 101 and the second threading pipe 102 are twisted in the opposite direction. Meanwhile, the sealing component 103 is prevented from driving the cable to twist, so that the insulation skin of the cable is prevented from being damaged.

The sealing assembly 103 shown in fig. 1 may be a silicone rubber sealing assembly, which has elasticity and good sealing performance, can perform a good sealing function,

the first threading pipe 101 shown in fig. 1 may be fixed to the first flange 104 by welding, and the first threading pipe is fixed by welding more firmly. Exemplarily, the first threading pipe 101 is a metal threading pipe, the first flange plate 104 is a metal flange plate, the metal strength is high, the strength of the first threading pipe 101 and the strength of the first flange plate 104 can be increased, and meanwhile, the first threading pipe 101 and the first flange plate 104 can be welded together. In other implementations, the first threading tube 101 and the first flange 104 can also be manufactured by an integrally formed manufacturing process.

The second conduit tube 102 shown in fig. 1 may be fixed to the second flange 105 by welding, and the second conduit tube is fixed by welding. The second threading pipe 102 is a metal threading pipe, the second flange plate 105 is a metal flange plate, the metal strength is high, the strength of the second threading pipe 102 and the strength of the second flange plate 105 can be increased, and meanwhile the second threading pipe 102 and the second flange plate 105 can be welded together. In other implementations, the second threading tube 102 and the second flange 105 can also be manufactured by an integrally formed manufacturing process.

Since the first flange 104 and the second flange 105 are detachably connected, the cable sealing device is convenient to disassemble and assemble in the process of disassembling and assembling. Such as a bolted connection, a snap connection, a bayonet connection, or other connection.

Referring to fig. 1 again, the first flange 104 has screw through holes 141 around it, the second flange 105 has bolt through holes 152 corresponding to the screw through holes 141 one by one around it, and the cable sealing device further includes bolts 107 communicating the screw through holes 141 and the bolt through holes 152.

The fastening of the first flange 104 and the second flange 105 by the bolts 107 is more convenient than other connection methods (e.g. snap connection and latch connection), because the distance between the opposite surfaces of the first flange 104 and the second flange 105 can be adjusted by the bolts 107 in subsequent work to adjust the sealing effect of the cable sealing device.

The number of the peripheral screw through holes 141 of the first flange plate 104 and the peripheral bolt through holes 152 of the second flange plate 105 shown in fig. 1 is 3, so that the first flange plate 104 and the second flange plate 105 can be fixed together, the structure is simple, the number of the screw through holes 141 and the number of the bolt through holes 152 are not limited in other implementation modes, and it is enough to ensure that the screw through holes 141 and the bolt through holes 152 are equal in number and can be communicated to fix the first flange plate 104 and the second flange plate 105 together.

The first threading tube 101 shown in fig. 2 is a hollow round table body, i.e. the outer diameter of the first threading tube 101 is also larger at one end and smaller at the other end, so that the design is more beautiful. In other implementation manners, it is only necessary to ensure that the inner hole of the first threading pipe 101 is in a circular truncated cone shape, and the external structure of the first threading pipe 101 may be in other shapes, for example, a hollow cylinder or a hollow cuboid.

Referring again to fig. 3, the seal assembly 103 includes a multi-lobed seal strip 132.

Fig. 4 is a schematic structural diagram of a sealing strip according to an embodiment of the present invention. Referring to fig. 4, any cross section of the sealing tape 132 in a direction perpendicular to the height direction of the sealing tape 132 (i.e., a direction a in fig. 3 and 4) is fan-shaped, and the sealing tape 132 has semicircular grooves 133 arranged in the height direction a on a side surface parallel to the height direction a of the sealing tape 132. As shown in fig. 3, the semicircular grooves 133 of two adjacent sealing strips 132 correspond in position and form a cylindrical cable hole 131.

The seal assembly 103 is provided as a multi-lobed seal strip 132, and a semicircular groove 133 is arranged on a side surface parallel to the height direction a of the seal strip 132, the semicircular groove 133 having a radius smaller than that of the electric cable. When the side surfaces of two adjacent sealing strips 132 are attached, the two semicircular grooves 133 form a cable hole 131, and the cable hole 131 is used for passing through a cable. The cable can be directly placed between the two semicircular grooves 133 of the two-piece sealing strip 132 in the installation process without passing the cable through the cable hole 131 from one end of the sealing assembly, so that the cable can be placed more conveniently.

Because the radius of the semicircular groove 133 is smaller than that of the cable, and the sealing assembly 103 has elasticity, when the installed sealing assembly 103 is placed in the first threading pipe 101, the semicircular groove 133 can extrude the cable, so that the cable is tightly attached to the sealing assembly 103, and the sealing effect of the sealing assembly 103 is enhanced.

Illustratively, the difference between the radius of the semicircular groove 133 and the radius of the cable is in the range of 0.5mm to 1.0mm, so as to avoid that the radius of the semicircular groove 133 is too small compared with the radius of the cable, so that the diameter of the assembled sealing assembly 103 is too large compared with the diameter of the first threading pipe 101, and when the sealing assembly 103 is pressed downwards by the second flange plate 105, the sealing assembly 103 cannot move towards the end of the first threading pipe 101 with the small inner hole diameter; while avoiding the radius of the semi-circular groove 133 being too large to provide enhanced sealing of the seal assembly 103. For example, the difference between the radius of the semicircular groove 133 and the radius of the cable line may be 0.7 mm.

Referring again to fig. 3, the sealing assembly 132 includes 3-piece sealing strips 132, 3 cable wires are typically used in oil production, and the 3-piece sealing strips 132 correspond to a total of 3 cable holes 131 for mating with the cable wires. In other implementations, the number of the sealing strips 132 or the cable holes 131 can be adjusted according to actual conditions.

Referring again to fig. 2, the second flange 105 also has a circular groove 151, the groove 151 is disposed concentrically with the through hole of the second flange 105, and the groove 151 is disposed on the surface of the second flange 105 adjacent to the first flange 104.

The diameter of groove 151 is greater than or equal to the diameter of the end of seal assembly 103 in contact with groove 151 so that groove 151 can snap onto seal assembly 103; the sum of the height of the first threading pipe 101, the thickness of the first flange 104 and the depth of the groove 151 is smaller than the height of the sealing component 103, so that the inner wall of the groove 151 surrounds the periphery of the sealing component 103 protruding out of the surface of the first flange 104, the sealing effect of the sealing component 103 is enhanced, and the groove 151 can also fix the position of the contact end of the sealing component 103 and the groove 151; simultaneously recess 151 can extrude seal assembly 103, realizes compressing tightly sealed in recess 151 and seal assembly 103 contact department, and when recess 151 extrusion seal assembly 103, recess 151 can support seal assembly 103 toward the less one end of the hole diameter of first threading pipe 104 and press, makes seal assembly 103 closely laminate with the inner wall of first threading pipe 104, makes the inner wall and the cable conductor of cable hole 131 closely laminate simultaneously to the realization is to the sealed of cable conductor.

Illustratively, the difference between the diameter of groove 151 and the diameter of the end of seal assembly 103 in contact with groove 151 is less than or equal to 2 mm. Not only ensures that the groove 151 can be buckled on the sealing component 103, but also avoids the problem that the diameter of the groove 151 is too large with the diameter of the end, contacted with the sealing component 103 and the groove 151, of the groove 151, and the sealing strengthening effect cannot be achieved. For example, the difference between the diameter of groove 151 and the diameter of the end of seal assembly 103 in contact with groove 151 may be 1 mm.

Referring again to fig. 2, the cable sealing device further includes a shielding ring 106, the shielding ring 106 is disposed on an outer side surface of the second flange 105 along a circumferential direction of the second flange 105, the shielding ring 106 faces the first flange 104, and an inner diameter of the shielding ring 106 is greater than or equal to an outer diameter of the first flange 104. The outer side surface of the second flange 105 means an annular side surface of the second flange 105.

A shielding ring 106 is arranged on the second flange plate 105, and the inner diameter of the shielding ring 106 is larger than or equal to the outer diameter of the first flange plate 104. As shown in fig. 2, after the cable sealing device is installed, the first flange 104 is located inside the shielding ring 106, and the shielding ring 106 surrounds the first flange 104, i.e. the contact position of the sealing assembly 103 and the second flange 105 is located inside the shielding ring 106, so as to enhance the sealing effect of the contact position of the sealing assembly 103 and the second flange 105. Meanwhile, the shielding ring 106 can also fix the first flange 104 and prevent the first flange 104 from moving relative to the second flange 105.

The inner diameter of the shielding ring 106 shown in fig. 2 is greater than the outer diameter of the first flange 104, and in other implementations, the inner diameter of the shielding ring 106 may be equal to the outer diameter of the first flange 104, so as to ensure that the shielding ring 106 can be fastened on the first flange 104.

Referring to fig. 1 again, the first threading pipe 101 includes a threading pipe joint 111, the threading pipe joint 111 is fixed at one end of the inner hole of the first threading pipe 101, which has a smaller diameter, and the threading pipe joint 111 has an external thread.

Need install first threading pipe 101 on the cable pipe when installation cable sealing device, be provided with the threading pipe interface 111 of external screw thread, with the interior screw-thread fit in the cable pipe, it is more convenient to install first threading pipe 101 on the cable pipe through the screw thread, and threaded connection compares other modes (for example, buckle) leakproofness better.

As shown in fig. 2, the threading pipe connector 111 is a hollow cylinder, and since the cable pipe is generally a hollow cylinder, the threading pipe connector 111 is configured as a hollow cylinder which can be matched with the hollow cylinder of the cable pipe, so that the first threading pipe 101 is conveniently installed on the cable pipe. In other implementation manners, the threading pipe interface 111 may also be a hollow circular truncated cone, and the first threading pipe 101 may be mounted on the cable pipe through the threading pipe interface 111.

Referring again to fig. 2, the inner diameter of the threading tube socket 111 is equal to the inner diameter of the end of the first threading tube 101 connected to the threading tube socket 111, and the outer diameter of the threading tube socket 111 is equal to the outer diameter of the end of the first threading tube 101 connected to the threading tube socket 111.

In the installation process, the cable needs to pass through the whole first threading pipe 101, namely the cable also needs to pass through the threading pipe interface 111, and the inner diameter of the threading pipe interface 111 is equal to the inner diameter of the joint of the first threading pipe 101 and the threading pipe interface 111, so that the cable can pass through more conveniently. The outer diameter of the threading pipe interface 111 is equal to the outer diameter of the joint of the first threading pipe 101 and the threading pipe interface 111, so that the design is more convenient to manufacture and more attractive.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. A cable sealing device is characterized by comprising a first threading pipe (101), a second threading pipe (102), a sealing component (103), a first flange plate (104) and a second flange plate (105) which are arranged oppositely;

the inner hole of the first threading pipe (101) is in a circular truncated cone shape, the sealing assembly (103) is a circular truncated cone body corresponding to the inner hole of the first threading pipe (101), and the sealing assembly (103) is positioned in the first threading pipe (101);

the first flange plate (104) is fixed at one end of the inner hole of the first threading pipe (101) with a larger diameter, the second flange plate (105) is fixed at one end of the second threading pipe (102), the first flange plate (104) and the second flange plate (105) are detachably connected, and the inner diameter of the second flange plate (105) is smaller than the diameter of one end of the sealing assembly (103) contacted with the second flange plate (105);

the sealing component (103) is provided with a cable hole (131) penetrating through the bottom surface and the surface of the sealing component (103), and the sealing component (103) is a sealing component with elasticity;

the sum of the height of the first threading pipe (101) and the thickness of the first flange plate (104) is smaller than the height of the sealing component (103), and the diameter of one end, extending out of the first flange plate (104), of the sealing component (103) is larger than the inner diameter of the first flange plate (104).

2. The cable sealing device according to claim 1, characterized in that the sealing assembly (103) comprises a multi-lobed sealing strip (132), the sealing strip (132) having a sector-shaped cross-section in any section in a height direction (a) perpendicular to the sealing strip (132);

the weather strip (132) has, on a side face parallel to the height direction (a), a semicircular groove (133) arranged in the height direction (a);

the semicircular grooves (133) of two adjacent sealing strips (132) correspond in position and form the cylindrical cable hole (131).

3. The cable sealing device according to claim 2, wherein the radius of the semicircular groove (133) is smaller than the radius of the cable wires.

4. A cable sealing device according to claim 3, wherein the radius of the semi-circular groove (133) differs from the radius of the cable wire by a value in the range of 0.5mm to 1.0 mm.

5. The cable sealing device according to any one of claims 1 to 4, characterized in that the second flange (105) further has a circular groove (151), the groove (151) being arranged concentrically with the through hole of the second flange (105), the groove (151) being located on the face of the second flange (105) adjacent to the first flange (104);

the diameter of the groove (151) is larger than or equal to the diameter of one end of the sealing component (103) which is in contact with the groove (151);

the sum of the height of the first threading pipe (101), the thickness of the first flange plate (104) and the depth of the groove (151) is smaller than the height of the sealing component (103).

6. The cable sealing device according to claim 5, characterized in that the difference between the diameter of the end of the sealing member (103) in contact with the groove (151) and the diameter of the groove (151) is less than or equal to 2 mm.

7. The cable sealing device according to any one of claims 1 to 4, further comprising a shielding ring (106);

the shielding ring (106) is arranged on the outer side surface of the second flange plate (105) along the circumferential direction of the second flange plate (105), and the shielding ring (106) faces the first flange plate (104);

the inner diameter of the retaining ring (106) is larger than or equal to the outer diameter of the first flange plate (104).

8. The cable sealing device according to any one of claims 1 to 4, wherein the first threading tube (101) comprises a threading tube interface (111), the threading tube interface (111) being fixed to the smaller diameter end of the inner bore of the first threading tube (101), the threading tube interface (111) having an external thread.

9. The cable sealing device according to any one of claims 1 to 4, wherein the first flange (104) has threaded through holes (141) around it, and the second flange (105) has bolt through holes (152) around it, corresponding to the threaded through holes (141);

the cable sealing device further comprises a bolt (107) communicating the threaded through hole (141) and the bolt through hole (152).

10. The cable sealing device according to any one of claims 1 to 4, wherein the sealing component (103) is a silicone rubber sealing component.

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