CN210660016U

CN210660016U - Metal sealing high-pressure pipe cable hanger

Info

Publication number: CN210660016U
Application number: CN201921785427.1U
Authority: CN
Inventors: 李建波; 雷新刚; 蒋喜军; 孙荣芝
Original assignee: Baoji Safe Petroleum Machinery Co ltd
Current assignee: Baoji Saifu Petroleum Machinery Co Ltd
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-06-02
Anticipated expiration: 2029-10-22

Abstract

The utility model discloses a metal sealing high-pressure pipe cable hanger, which comprises a hanger body, wherein a hollow cavity is arranged in the hanger body, a hanging mandrel component for hanging a pipe cable is arranged in the hollow cavity, and a metal sealing ring for sealing the pipe cable is arranged at the lower end of the hollow cavity; the middle part of the hanger body is provided with a plurality of jackscrew components along the circumferential direction, the jackscrew components penetrate through the hanger body to be clamped with the hanging mandrel component, the jackscrew components are screwed to push the hanging mandrel component to move downwards, so that the bottom end of the hanging mandrel component is tightly matched with the metal sealing ring and each conical surface of the hanger body, the conical surface at the upper end of the metal sealing ring is elastically deformed and contracted inwards under the action of mandrel extrusion force, the inner orifice of the hanging mandrel component is tightly pressed against the outer wall of the heating pipe cable to be matched in a sealing way, high-pressure oil gas can be effectively sealed below the hanger, and the long-term reliable sealing between the heating pipe cable and the hanger under; the heating pipe cable is suspended on a wellhead for a long time through clamping of the slip assembly of the suspension mandrel and the engagement force, and the oil-gas well heating paraffin removal production mode is achieved.

Description

Metal sealing high-pressure pipe cable hanger

Technical Field

The utility model relates to an oil drilling equipment field especially relates to a metal-sealed high-pressure pipe cable hanger.

Background

At present, the problem of wax deposition of oil and gas wells exists in various large oil fields, wax removal and blockage removal become a conventional well workover operation mode, low-pressure and medium-pressure wells can adopt steel wire wax removal operation, but high-pressure and high-CO content wells₂And H₂The S well has the disadvantages of high difficulty, high risk, low efficiency and high operation cost in paraffin removal operation, and mechanical paraffin removal tools with different specifications and sizes need to be put into the well which is repeatedly operated, repeatedly assembled and disassembled and has serious paraffin accumulation, so that the labor intensity is high. Therefore, the method for heating the wax deposition point of the oil and gas well by suspending the heating pipe cable through the wellhead once and for all solves the problem of paraffin removal, and is a brand new solution which is safe, efficient, low in risk, low in cost, low in difficulty, low in labor intensity, capable of being installed once after multiple operations and capable of repeatedly heating paraffin removal for a long time. However, the solution to the long-term sealing and hanging problem between the umbilical and the hanger under high pressure, high corrosion and high temperature environment is currently a technical bottleneck.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned defect or not, an object of the utility model is to provide a metal seal high pressure pipe cable hanger through the metal seal type, realizes hanging the heating pipe cable in the well head for a long time under high pressure, high corruption and high temperature environment to reach effective sealing between heating pipe cable and the hanger, realize realizing that heating pipe cable and hanger are effective

The paraffin removal operation mode of heating inside the pipe cable.

In order to achieve the above purpose, the technical scheme of the utility model is that:

a metal sealing high-pressure pipe cable hanger comprises a hanger body, wherein a hollow cavity is formed in the hanger body, a hanging mandrel assembly used for hanging a pipe cable is installed in the hollow cavity, and a metal sealing ring used for sealing the hollow cavity and a heating pipe cable is installed at the lower end of the hollow cavity; the middle part of the hanger body is provided with a plurality of jackscrew assemblies along the circumferential direction, and the jackscrew assemblies penetrate through the hanger body and are clamped with the hanging mandrel assembly; when the jackscrew component is screwed, the conical surface at the front end of the jackscrew component pushes the suspension mandrel component to move downwards, and the bottom inner conical surface of the suspension mandrel component, the outer conical surface at the upper end of the metal sealing ring, the outer conical surface at the lower end of the metal sealing ring, the inner conical surface at the bottom end of the hanger body, the inner orifice of the outer conical surface at the upper end of the metal sealing ring and each point of the pipe cable are mutually and tightly matched and sealed.

The suspension mandrel assembly comprises a mandrel arranged in the hollow cavity, the mandrel is of a hollow structure, and a slip assembly used for suspending the pipe cable is arranged at the top of the mandrel; the outer circle of the middle part of the mandrel is provided with a step, and a large thrust ring matched with the conical surface at the front end of the jackscrew assembly is installed at the step.

A first sealing ring is installed on the inner wall of the bottom end of the mandrel, and a second sealing ring and a third sealing ring are installed on the outer wall of the bottom end of the mandrel.

The slips subassembly includes and compresses tightly in proper order through gland nut and installs thrust bearing, the push-up slips seat, push-up slips, slips clamping ring, hang the slips and hang the slips seat at the dabber top.

An inner hole is formed in the compression nut, a step for positioning is arranged at the inner hole, the thrust bearing, the push-up slip seat and the push-up slip are arranged at the position of the inner hole of the compression nut, the suspension slip and the suspension slip seat are arranged at the position of the inner hole at the top end of the mandrel, and the slip press ring is arranged between the push-up slip and the suspension slip; the upper end of the compression nut is provided with a fishing diameter, and the lower end of the compression nut is provided with an internal thread; the upper end of the mandrel is provided with an external thread, and the mandrel and the internal thread of the compression nut are screwed to compress an internally installed thrust bearing, an upward pushing slip seat, an upward pushing slip, a slip pressing ring, a hanging slip and a hanging slip seat, so that the heating pipe cable can be reliably hung; the inner holes of the push-up slip seat and the suspension slip seat are arranged to be inner conical surfaces, the outer walls of the push-up slip and the suspension slip are arranged to be outer conical surfaces, and the inner holes of the push-up slip seat and the suspension slip seat are provided with toothed slip teeth.

The hanger body lower extreme is provided with the pressure measurement mouth subassembly that is used for detecting hanger body and sealing ring leakproofness, and hanger body upper end is provided with the pressure release subassembly that is used for the discharge pressure, pressure measurement mouth subassembly and pressure release subassembly all are linked together with the cavity, all can carry out the pressure testing at relevant sealed position and detect.

The inner wall of the bottom of the mandrel is of a first conical surface structure, the outer wall of the top of the metal sealing ring is of a second conical surface structure, and the first conical surface structure and the second conical surface structure are clamped in a sealing mode.

The inner wall of hanger body bottom is first back taper structure, metal seal ring bottom outer wall is the second structure of falling the conical surface, the sealed block of first back taper structure second structure of falling conical surface structure looks.

The jackscrew component comprises a jackscrew, a jackscrew packing compression ring, a jackscrew packing and a jackscrew compression cap; the middle part of the hanger body is circumferentially provided with a plurality of through holes, the front ends of the through holes are internal threads, sealing surfaces and steps are arranged inwards, a jackscrew pressing cap is arranged at the internal thread at the inlet of each through hole, the threads at the rear ends of jackscrews are matched with the internal threads of the jackscrew pressing cap, and a jackscrew packing pressing ring are sleeved on the outer circle of the middle part of the hanger body; rotating the jackscrew pressing cap to extrude the jackscrew packing pressing ring, the jackscrew packing, the fourth sealing ring and the fifth sealing ring to seal the jackscrew; the rotary jackscrew moves towards the center of the hanger body, and the conical surface at the front end of the rotary jackscrew presses the conical surface of the large thrust ring arranged in the middle of the mandrel to push the mandrel to extrude the metal sealing ring downwards.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a metal seal high-pressure pipe cable hanger comprises parts such as hanger body, suspension dabber subassembly, jackscrew subassembly, metal seal ring, pressure measurement subassembly and pressure release subassembly. The suspension mandrel assembly is used for reliably suspending the pipe cable at a wellhead for a long time through the combined action of the push-up slips and the suspension slips, and meanwhile, the pipe cable is prevented from jumping upwards under the action of well pressure; the mandrel is pushed to descend to be closely matched with the metal sealing ring and the conical surfaces of the hanger body to realize sealing by screwing the jackscrew, and meanwhile, the outer conical surface at the upper end of the metal sealing ring is extruded and elastically deformed, and the inner orifice of the metal sealing ring compresses the outer wall of the pipe cable to realize long-term reliable sealing of the pipe cable under high pressure. In addition, the sealing condition of each sealing point can be monitored and detected at any time through the pressure measuring port and the pressure relief port. By applying the metal sealing high-pressure pipe cable hanger, the heating pipe cable and the hanger can be reliably sealed for a long time under high-pressure, high-corrosion and high-temperature environments, the heating pipe cable can be safely suspended at a well head for a long time, and a paraffin removal operation mode for heating the inside of an oil supply pipe by using the heating pipe cable is realized.

Drawings

Fig. 1 is a schematic structural view of a metal-sealed high-pressure pipe cable hanger of the present invention;

fig. 2 is a schematic structural view of a suspension mandrel assembly of the metal-sealed high-pressure pipe cable hanger of the present invention;

fig. 3 is a schematic structural view of a metal sealing ring of the metal sealing high-pressure pipe cable hanger of the present invention;

fig. 4 is the utility model discloses metal seal high-pressure pipe cable hanger jackscrew subassembly schematic structure.

In the drawings, 1 — the hanger body; 2-hanging the mandrel assembly; 3-a jackscrew assembly; 4-a metal sealing ring; 5-pressure measuring port assembly; 6-a pressure relief assembly; 7-an umbilical; 21-a mandrel; 22-a compression nut; 23-a thrust bearing; 24-pushing up the slip seat; 25-push up slips; 26, a slip compression ring; 27-hanging slips; 28-hanging a slip seat; 29-large thrust ring; 210-screws; 211 — a first seal ring; 212 — a second seal ring; 213 — third seal ring; 31-top thread; 32-top thread packing ring; 33-jackscrew packing; 34-a fourth seal ring; 35-fifth sealing ring; 36-top thread press cap.

Detailed Description

The present invention will be described in detail with reference to the drawings, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the utility model provides a metal sealing high-pressure pipe cable hanger, which comprises a hanger body 1, wherein a hollow cavity is arranged in the hanger body 1, a hanging mandrel component 2 for hanging a pipe cable 7 is arranged in the hollow cavity, and a metal sealing ring 4 for sealing the hollow cavity and a heating pipe cable is arranged at the lower end of the hollow cavity; a plurality of jackscrew assemblies 3 are installed along circumference in the middle part of hanger body 1, jackscrew assembly 3 passes hanger body 1 and hangs dabber subassembly 2 looks block. Screwing the jackscrew component 3, pushing the suspension mandrel component 2 to move downwards by the conical surface at the front end of the jackscrew component 3, and extruding the bottom end inner conical surface of the suspension mandrel component 2 to be mutually and closely matched and sealed with the upper end outer conical surface of the metal sealing ring 4, the lower end outer conical surface of the metal sealing ring 4, the bottom end inner conical surface of the hanger body 1, the upper end outer conical surface inner hole opening of the metal sealing ring 4 and each point of the pipe cable 7.

Specifically, as shown in fig. 2, the suspension mandrel assembly 2 includes a mandrel 21 installed in a hollow cavity, the mandrel 21 is a hollow structure, and a slip assembly for suspending the umbilical 7 is installed at the top of the mandrel 21; the outer circle of the middle part of the mandrel 21 is provided with a step, and a large thrust ring 29 matched with the front end conical surface of the jackscrew component 3 is arranged at the step. The slip assembly comprises a thrust bearing 23, an upward-pushing slip seat 24, an upward-pushing slip 25, a slip press ring 26, a hanging slip 27 and a hanging slip seat 28 which are sequentially installed on the top of a mandrel 21 in a pressing mode through a pressing nut 22.

Specifically, an inner hole is formed in the compression nut 22, the inner hole is provided with a step for positioning, the thrust bearing 23, the push-up slip seat 24 and the push-up slip 25 are installed in the inner hole position of the compression nut 22, the slip 27 and the slip seat 28 are installed in the inner hole position of the top end of the mandrel 21, and the slip pressing ring 26 is installed between the push-up slip 25 and the slip 27. The mandrel 21 has a step at its middle outer circumference where the large thrust collar 29 is mounted and locked with a number of screws 210. The upper end of the compression nut 22 is provided with a fishing diameter, and the lower end of the compression nut is provided with an internal thread; the upper end of the mandrel 21 is provided with external threads, and the mandrel 21 is tightly screwed with the internal threads of the compression nut 21 to compress an internally installed thrust bearing 23, an upward pushing slip seat 24, an upward pushing slip 25, a slip press ring 26, a hanging slip 27 and a hanging slip seat 28 so as to reliably hang the pipe cable 7; inner holes of the push-up slip seat 24 and the hanging slip seat 28 are arranged to be inner conical surfaces, outer walls of the push-up slip seat 25 and the hanging slip seat 27 are arranged to be outer conical surfaces, and tooth-shaped slip teeth are arranged in the inner holes.

Preferably, the inner hole at the lower end of the mandrel 21 is designed with a plurality of sealing grooves, a first sealing ring 211 is installed in each sealing groove, a plurality of sealing grooves are designed at the outer circle of the lower end of the mandrel 21, and a second sealing ring 212 and a third sealing ring 213 are installed in each sealing groove. The opening at the lower end of the mandrel 21 is a large conical surface, the metal sealing ring 4 is arranged at the position, and the sealing effect is achieved by extruding the inner conical surface of the mandrel to be tightly matched with the outer conical surface of the metal sealing ring.

The utility model discloses in, hang dabber subassembly 2 and prevent that the tube cable from scurrying the tenesmus through the combined action of push-up slips and hanging the slips, hang the reliable back of well head with the tube cable, make to hang dabber subassembly 2 after down through screwing jackscrew subassembly 3 and closely cooperate with each conical surface of metal seal ring 4 and hanger body 1, through the extrusion, realized as shown in figure 1 a, b, c three point metal seal, can be with the effectual closure of high-pressure oil gas below the hanger.

Preferably, the utility model discloses in, 1 lower extreme of hanger body is provided with the pressure measurement mouth subassembly 5 that is used for detecting

hanger body

1 and 4 leakproofness of sealing ring, and 1 upper end of hanger body is provided with the pressure release subassembly 6 that is used for drainage pressure, pressure measurement mouth subassembly 5 and pressure release subassembly 6 all are linked together with the cavity. The effect of the metal seal of the hanger can be tested through the pressure measuring port assembly, and finally, the head of the pipe cable extends out of the hanger to be connected with an electric appliance cabinet.

As shown in fig. 3, the metal sealing ring 4 is made of a corrosion-resistant and high-temperature-resistant material, the inner wall of the bottom of the mandrel 21 is a first conical surface structure, the outer wall of the top of the metal sealing ring 4 is a second conical surface structure, and the first conical surface structure and the second conical surface structure are in sealed engagement; the inner wall of the bottom of the hanger body 1 is of a first inverted conical surface structure, the outer wall of the bottom of the metal sealing ring 4 is of a second inverted conical surface structure, and the first inverted conical surface structure and the second inverted conical surface structure are clamped in a sealing mode. Hang dabber subassembly 2 under the thrust effect of jackscrew subassembly 3, down the back closely cooperate with each conical surface of metal seal ring 4 and hanger body 1, realized dabber 21 and metal seal ring 4 (seal site a point), sealed between 7 and metal seal ring 4 (seal site b point) of tube cable, hanger body 1 and metal seal ring 4 (seal site c point) under the effect of extrusion force, 3 here are sealed with pressure, gaseous effectual the closure below the hanger. The second and

third sealing rings

212 and 213 are auxiliary seals at the point c, the first sealing ring 211 is an auxiliary seal at the point a and the point b, and the pressure measuring port assembly 5 can detect the auxiliary seal when the sealing at the point c or the sealing at the point a and the point b fails; when both point c and its secondary seal fail, the pressure relief assembly 6 can relieve its pressure. The pressure measuring port assembly 5 and the pressure relief assembly 6 can perform pressure test detection on related sealing parts during installation or operation.

As shown in fig. 4, the jackscrew assembly 3 includes a jackscrew 31, a jackscrew packing ring 32, a jackscrew packing 33, and a jackscrew pressing cap 36; the middle part of the hanger body 1 is circumferentially provided with a plurality of through holes, the front ends of the through holes are provided with internal threads, sealing surfaces and steps are arranged inwards, a jackscrew pressing cap 36 is arranged at the internal thread at the inlet of each through hole, the threads at the rear end of a jackscrew 31 are matched with the internal threads of the jackscrew pressing cap 36, and a jackscrew packing 33 and a jackscrew packing pressing ring 32 are sleeved on the excircle at the middle part of the jackscrew; grooves for mounting the fourth sealing ring 34 and the fifth sealing ring 35 are formed in the inner hole and the outer circle of the jackscrew packing 33; the external screw thread at the front end of the jackscrew pressing cap 36 is installed at the internal screw thread at the inlet of the through hole of the hanger body 1, the external screw thread of the jackscrew 31 installed at the rear end internal screw thread is used for rotating the jackscrew 31 to move forwards, the front end of the jackscrew 31 is a conical surface and used for pushing the mandrel 21 to move downwards, and the rear end of the jackscrew is the outer side of the rotating jackscrew 31. With reference to fig. 4, the jackscrew 31 is sealed by rotating the jackscrew pressing cap 36 to press the jackscrew packing pressing ring 32, the jackscrew packing 33, the fourth sealing ring 34 and the fifth sealing ring 35; and rotating the jackscrew 31, moving the jackscrew 31 to the central position of the hanger body 1, and pressing the conical surface of the large thrust ring 29 arranged in the middle of the mandrel 21 by the conical surface at the front end of the jackscrew to push the mandrel 21 to downwards extrude the metal sealing ring 4.

The utility model discloses theory of operation and process do:

installing hanger body 1 and metal seal ring 4, through the gland nut 22 in the tight slip subassembly of screwing, the thrust bearing 23 of installation in gland nut 22 and the dabber 21, push up slips seat 24, push up slips 25, slip clamping ring 26 and suspension slips 27, hang slips seat 28, push up slips seat 24 and the interior conical surface that hangs slips seat 28 push up the dentate slips tooth of slips 25 and suspension slips 27 hole tightly and extrude the metal outer wall of tube cable 7, with reliable the hanging well head of tube cable 7, because the cooperation of hanging slips 27 external conical surface and hanging slips seat 28 interior conical surface, the weight of tube cable 7 is big more tightly hung. The matching action of the inner conical surface of the push-up slip seat 24 and the outer conical surface of the push-up slip 25 can prevent the pipe cable 7 from moving upwards under the action of well pressure. The jackscrew 31 in the jackscrew component 3 is screwed to move towards the central position of the hanger body 1, the front end conical surface of the jackscrew extrudes the conical surface of the large thrust ring 29 arranged on the step in the middle of the mandrel 21 to push the mandrel 21 to move downwards, the lower end inner conical surface of the jackscrew extrudes the upper end outer conical surface of the metal sealing ring 4, and the lower end outer conical surface of the metal sealing ring 4 extrudes the lower end inner conical surface of the hanger body 1, so that the conical surfaces are tightly matched and sealed, meanwhile, the upper end outer conical surface of the metal sealing ring 4 is elastically deformed and inwards shrunk by an inner orifice of the extruded metal sealing ring, the metal outer wall of the heating pipe cable 7 is compressed, the metal sealing of the sealed part at the points of the graph a, b and c3 is realized, high-pressure oil gas is effectively sealed below the hanger, the effect of suspended metal sealing can be tested by. The nonmetal sealing points arranged on the inner hole and the outer wall of the mandrel 21 are used as auxiliary standby sealing of each metal sealing point. By screwing the jackscrew pressing cap 36 in the jackscrew component 3, the jackscrew packing pressing ring 32, the jackscrew packing 33, the fourth sealing ring 34 and the fifth sealing ring 35 are extruded to seal the jackscrew 31. The pressure measuring port assembly 5 and the pressure relief port assembly 6 can perform pressure test detection on each sealing point after the equipment is installed and in the middle of operation. To remove the umbilical, the jack screw 31 is unscrewed and the lifting apparatus can lift the umbilical up the well by grasping the fishing diameter at the upper end of the gland nut 22.

It should be apparent to those skilled in the art that the foregoing specific embodiments are merely preferred embodiments of the present invention, and therefore, modifications and changes that may be made to some parts of the present invention by those skilled in the art are still embodied by the principles of the present invention, and the objects of the present invention are achieved by the present invention, which all fall within the scope of the present invention.

Claims

1. The metal sealing high-pressure pipe cable hanger is characterized by comprising a hanger body (1), wherein a hollow cavity is formed in the hanger body (1), a hanging mandrel component (2) for hanging a pipe cable (7) is installed in the hollow cavity, and a metal sealing ring (4) for sealing the hollow cavity and heating the pipe cable is installed at the lower end of the hollow cavity; the middle part of the hanger body (1) is provided with a plurality of jackscrew assemblies (3) along the circumferential direction, and the jackscrew assemblies (3) penetrate through the hanger body (1) and are clamped with the hanging mandrel assembly (2); when screwing the jackscrew component (3), the conical surface at the front end of the jackscrew component pushes the suspension mandrel component (2) to move downwards, and the bottom inner conical surface of the suspension mandrel component (2) and the outer conical surface at the upper end of the metal sealing ring (4), the outer conical surface at the lower end of the metal sealing ring (4) and the inner orifice of the bottom inner conical surface of the hanger body (1), the outer conical surface at the upper end of the metal sealing ring (4) and each point of the pipe cable (7) are mutually and tightly matched and sealed.

2. The metal-sealed high-pressure umbilical hanger of claim 1, wherein the hanging mandrel assembly (2) comprises a mandrel (21) installed in a hollow cavity, the mandrel (21) is of a hollow structure, and a slip assembly for hanging the umbilical (7) is installed on the top of the mandrel (21); the outer circle of the middle part of the mandrel (21) is provided with a step, and a large thrust ring (29) matched with the conical surface at the front end of the jackscrew component (3) is arranged at the step.

3. The metal-sealed high-pressure umbilical hanger of claim 2, wherein the inner wall of the bottom end of the mandrel (21) is provided with a first sealing ring (211), and the outer wall of the bottom end of the mandrel (21) is provided with a second sealing ring (212) and a third sealing ring (213).

4. The metal-sealed high-pressure umbilical hanger of claim 2 or 3, wherein the slip assembly comprises a thrust bearing (23), a push-up slip seat (24), a push-up slip (25), a slip ring (26), a suspension slip (27) and a suspension slip seat (28) which are sequentially mounted on the top of the mandrel (21) in a pressing manner through a pressing nut (22).

5. The metal-sealed high-pressure pipe cable hanger according to claim 4, wherein an inner hole is formed in the gland nut (22), a step for positioning is arranged in the inner hole, the thrust bearing (23), the push-up slip seat (24) and the push-up slip (25) are arranged at the position of the inner hole of the gland nut (22), the hanging slip (27) and the hanging slip seat (28) are arranged at the position of the inner hole at the top end of the mandrel (21), and the slip clamping ring (26) is arranged between the push-up slip (25) and the hanging slip (27); the upper end of the compression nut (22) is provided with a fishing diameter, and the lower end of the compression nut is provided with an internal thread; the upper end of the mandrel (21) is provided with an external thread, the mandrel is tightly screwed with the internal thread of the compression nut (22) to compress an internally installed thrust bearing (23), an upward pushing slip seat (24), an upward pushing slip (25), a slip press ring (26), a hanging slip (27) and a hanging slip seat (28), and a pipe cable (7) is reliably hung; inner holes of the push-up slip seat (24) and the suspension slip seat (28) are arranged to be inner conical surfaces, outer walls of the push-up slip (25) and the suspension slip (27) are arranged to be outer conical surfaces, and tooth-shaped slip teeth are arranged in the inner holes.

6. The metal sealing high-pressure pipe cable hanger according to claim 1, wherein a pressure measuring port assembly (5) used for detecting the tightness of the hanger body (1) and the sealing ring (4) is arranged at the lower end of the hanger body (1), a pressure relief assembly (6) used for discharging pressure is arranged at the upper end of the hanger body (1), and the pressure measuring port assembly (5) and the pressure relief assembly (6) are communicated with the hollow cavity to perform pressure test detection of the sealing position.

7. The metal-sealed high-pressure pipe cable hanger as claimed in claim 2, wherein the inner wall of the bottom of the mandrel (21) is of a first conical surface structure, the outer wall of the top of the metal sealing ring (4) is of a second conical surface structure, and the first conical surface structure and the second conical surface structure are in sealing engagement.

8. The metal sealing high-pressure pipe cable hanger as claimed in claim 2, wherein the inner wall of the bottom of the hanger body (1) is of a first inverted conical surface structure, the outer wall of the bottom of the metal sealing ring (4) is of a second inverted conical surface structure, and the first inverted conical surface structure and the second inverted conical surface structure are in sealing engagement.

9. The metal-sealed high-pressure umbilical hanger of claim 1, wherein the jackscrew assembly (3) comprises a jackscrew (31), a jackscrew packing ring (32), a jackscrew packing (33), and a jackscrew gland (36); the hanger comprises a hanger body (1), wherein the middle of the hanger body (1) is circumferentially provided with a plurality of through holes, the front ends of the through holes are provided with internal threads, sealing surfaces and steps are arranged inwards, a jackscrew pressing cap (36) is arranged at the internal thread at the inlet of each through hole, the threads at the rear end of a jackscrew (31) are matched with the internal threads of the jackscrew pressing cap (36), and a jackscrew packing (33) and a jackscrew packing pressing ring (32) are sleeved on the outer circle of the middle of; rotating a jackscrew pressing cap (36) to extrude a jackscrew packing pressing ring (32), a jackscrew packing (33), a fourth sealing ring (34) and a fifth sealing ring (35) to seal the jackscrew (31); the rotary jackscrew (31) moves towards the center of the hanger body (1), and the conical surface at the front end of the rotary jackscrew presses the conical surface of the large thrust ring (29) arranged in the middle of the mandrel (21) to push the mandrel (21) to downwards extrude the metal sealing ring (4).