A non-metallic umbilical cable sheath production equipment and production process

Abstract

The invention discloses a non-metallic umbilical cable sheath layer production equipment and a production process, comprising a storage drum with a wire pay-off device, a passive double-wheel tension device, a non-metallic fiber cable rounding device, a first online diameter measuring instrument, a dehumidification device, a vacuuming device, a sheath layer material extrusion device, a cooling system, an active double-wheel traction device and a storage drum with a wire take-up device which are arranged in sequence from front to back. The dehumidification device comprises a hot air flow pipe and a radiation heater. The vacuuming device comprises a diameter reduction die, a vacuum pump and a sleeve. The sleeve is arranged between the diameter reduction die and the sheath layer material extrusion device. A pipeline is arranged between one side of the sleeve and the vacuum pump. The sleeve is vacuumed, and the online pre-stretching and rounding of the load-bearing armor layer can be performed, so as to improve the force consistency of the load-bearing fibers in the load-bearing armor layer and the consistency of the extruded wall thickness of the sheath layer. The quality of the sheath layer is improved by dehumidification drying and the formation of negative pressure, and the combination of the sheath layer and the load-bearing armor layer is strengthened.

Description

Technical Field

[0001] The present invention relates to the technical field of non-metallic umbilical cable production, and in particular to a non-metallic umbilical cable sheath layer production equipment and a production process. Background Art

[0002] The strength of heavy-duty non-metallic umbilical cable is greatly affected by its own weight due to its heavy weight in water, high load demand and application requirements of high-power transmission. Therefore, it is necessary to use lightweight, high-strength and high-modulus fibers such as aramid and LCP as the load-bearing material (load-bearing armor layer), and the linear density of the fiber bundle reaches more than 5000000Dtex. More than 600 lightweight, high-strength and high-modulus fibers bring difficulties to the production of subsequent sheath layers.

[0003] The continuous production of this type of non-metallic cable is divided into two types according to the length of the section. The production of short-length non-metallic cables often adopts the method of simultaneously producing and processing the load-bearing armor layer and the sheath layer. However, the production of long-length non-metallic cables cannot be stopped for a long time, and unexpected problems in production cannot be solved in time. Therefore, long-length heavy-duty non-metallic umbilical cables often adopt the method of separately producing the load-bearing armor layer and the sheath layer.

[0004] Multi-core non-metallic umbilical cables are cutting-edge equipment in the industry, and there are at least the following problems in production:

[0005] 1. The load-bearing armor layer has a large degree of freedom after being rolled onto the round storage drum. After the cable core is bent, the load-bearing fiber will move, resulting in a loss of force consistency in the load-bearing fiber. The tension of the general production line is not enough to straighten the fiber bundle with a linear density of more than 5000000Dtex, and the sheath layer production will cause the load-bearing strength to decrease;

[0006] 2. After the load-bearing armor layer is rolled up onto the circular storage drum along with the cable core, due to the long length (≥6000m), the load-bearing armor layer at the bottom of the storage drum is laminated by multiple layers of load-bearing armor layers. The non-metallic layer is temporarily not restricted and protected by the sheath layer. After four or five layers, the deformation is aggravated and the flattening becomes more and more obvious. Not only will the load-bearing strength be reduced, but the consistency of the wall thickness of the sheath layer produced subsequently will also be reduced, which cannot meet the product use requirements;

[0007] 3. The non-metallic fiber used in the load-bearing armor layer absorbs a certain amount of water and has a certain amount of moisture due to the influence of the fiber material itself and the armor structure. The moisture absorption can be reduced by selecting the material of the non-metallic fiber, but it cannot fundamentally solve the moisture storage caused by the structure. The materials of the umbilical cable sheath layer are mostly PE, TPEE or TPU, etc. The sheath layer material is sensitive to moisture. The moisture storage of the load-bearing armor layer will affect the appearance and wall thickness of the sheath layer. In severe cases, it will cause damage to the sheath layer;

[0008] 4. Materials of special sheath layers, such as TPEE and TPU, normally have poor adhesion with aramid, LCP and other non-metallic fibers. When the sheath layer is subjected to huge friction or the load-bearing armor layer is subjected to large tension, the load-bearing armor layer and the sheath layer are prone to separation. If the friction continues, the sheath layer may even be pulled and damaged, losing its protective function, and the cable will be directly scrapped.

[0009] The existence of the above problems has resulted in the production methods of multi-branch non-metallic umbilical cables being mostly under research, which has seriously affected the production process of long-length, heavy-load non-metallic umbilical cables and needs to be improved. Summary of the invention

[0010] The main technical problem solved by the present invention is to provide a non-metallic umbilical cable sheath layer production equipment and production process. When the sheath layer is produced, the force consistency of the load-bearing fibers is improved, the problem of poor consistency of the sheath layer wall thickness is solved, the problem of the sheath layer being rough and damaged due to moisture absorption of the non-metallic load-bearing fibers is avoided, and the bonding strength between the non-metallic load-bearing armor layer and the sheath layer is improved.

[0011] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a non-metallic umbilical cable sheath layer production equipment, including: a storage drum with a wire pay-off device, a passive double-wheel tension device, a non-metallic fiber cable rounding device, a first online diameter measuring instrument, a dehumidification device, a vacuum equipment, a sheath layer material extrusion device, a cooling system, an active double-wheel traction device and a storage drum with a wire take-up device arranged in sequence from front to back, the dehumidification equipment includes a hot air flow pipe and a radiation heater, the vacuum equipment includes a reducing die, a vacuum pump and a casing, the casing is arranged between the reducing die and the sheath layer material extrusion device, and a pipeline is arranged between one side of the casing and the vacuum pump to vacuum the casing.

[0012] In a preferred embodiment of the present invention, a first pay-off and take-up balancer is provided between the wire storage drum pay-off device and the passive double-wheel tension device, and a second pay-off and take-up balancer is provided between the active double-wheel traction device and the wire storage drum take-up device.

[0013] In a preferred embodiment of the present invention, a second online diameter measuring instrument is arranged between the jacket layer material extrusion equipment and the cooling system, a third online diameter measuring instrument is arranged between the cooling system and the active double-wheel traction equipment, and an extrusion temperature control module is arranged on the jacket layer material extrusion equipment.

[0014] In a preferred embodiment of the present invention, the hot air flow pipe is concentrically arranged in front of the radiation heater.

[0015] In a preferred embodiment of the present invention, a hot air blower is externally provided on one side of the hot air flow pipe.

[0016] In a preferred embodiment of the present invention, the radiation heater includes a cylinder and a ring-shaped array of ray tubes arranged in the cylinder.

[0017] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a production process of a non-metallic umbilical cable sheath layer, comprising the following steps:

[0018] The active two-wheel traction device and the passive two-wheel tension device are controlled by the controller (PLC), so that the passive two-wheel tension device lags behind the active two-wheel traction device, so as to realize the online pre-stretching of the load-bearing armor layer on the non-metallic umbilical cable, improve the force consistency of the load-bearing fibers in the load-bearing armor layer, and control the tension value F;

[0019] The calculation formula of tension value F is as follows:

[0020] ,in:

[0021] is the linear density of the i-th layer of armor;

[0022] is the elastic modulus of the i-th layer of armor fiber;

[0023] is the angle of the i-th layer of fiber armor;

[0024] is the fiber density;

[0025] is the online tensile strain;

[0026] is the output coefficient;

[0027] Under the action of pre-stretching force, the load-bearing armor layer is calibrated through multiple sets of transverse and vertical calibration rollers on the non-metallic fiber cable calibration equipment that match the cable core of the non-metallic umbilical cable, so as to improve the consistency of the subsequent sheath layer extrusion wall thickness;

[0028] The load-bearing armor layer is dehumidified by using dehumidification equipment. The load-bearing armor layer first passes through a hot air flow pipe, and hot air is used for the first dehumidification to remove the moisture on the load-bearing armor layer. The load-bearing armor layer then passes through a radiation heater for the second dehumidification. The non-metallic fiber in the load-bearing armor layer absorbs specific rays and heats up, and emits rays of specific wavelengths to the load-bearing armor layer, penetrating multiple layers of inner and outer armor, so that multiple layers of non-metallic fibers absorb specific rays at the same time, accelerate the temperature rise, and completely evaporate the moisture without affecting the internal structure of the cable core;

[0029] Through the reduction die in the vacuum equipment, the load-bearing armor layer is elastically compressed to control the outer diameter of the load-bearing armor layer, which improves the compactness of the load-bearing armor layer and is beneficial to the efficiency of subsequent vacuum extraction;

[0030] Before the cable core is sent into the sheath layer material extrusion equipment through the sheath, the sheath is evacuated by a vacuum pump to produce a negative pressure effect on the load-bearing armor layer on the surface of the cable core. The temperature of the sheath layer material extrusion equipment is controlled by an extrusion temperature control module. The sheath layer material is melt-extruded through the sheath layer material extrusion equipment. The negative pressure effect of the load-bearing armor layer is used to absorb part of the sheath layer material into the gap of the load-bearing armor layer, thereby strengthening the combination of the sheath layer and the load-bearing armor layer and improving the bonding force of the sheath layer to the load-bearing armor layer.

[0031] The jacket layer is cooled and shaped by a cooling system;

[0032] The wire storage reel is used for winding.

[0033] In a preferred embodiment of the present invention, the active double-wheel traction device and the passive double-wheel tension device are coordinated to isolate the wire storage drum pay-out device and the wire storage drum take-up device from large-force tension, so that the wire taking-up and paying-out process is not affected by large-force tension.

[0034] In a preferred embodiment of the present invention, the load-bearing armor layer after rounding is detected by a first online diameter measuring instrument, and the non-metallic fiber cable rounding equipment is maintained or adjusted according to the detection result.

[0035] The beneficial effects of the present invention are as follows: the non-metallic umbilical cable sheath layer production equipment and production process pointed out in the present invention can perform online pre-stretching and rounding of the load-bearing armor layer, improve the force consistency of the load-bearing fibers in the load-bearing armor layer and the consistency of the extruded wall thickness of the sheath layer, and dehumidify and dry the load-bearing armor layer and form negative pressure through dehumidification equipment and vacuum equipment, thereby improving the quality of the sheath layer, strengthening the combination of the sheath layer and the load-bearing armor layer, and making the structure more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0037] Figure 1 It is a structural schematic diagram of a preferred embodiment of a non-metallic umbilical cable sheath production equipment and production process of the present invention;

[0038] Figure 2 yes Figure 1Schematic diagram of the structure of the vacuum equipment. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments 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.

[0040] See also Figure 1~Figure 2 , the embodiment of the present invention includes:

[0041] like Figure 1 The non-metallic umbilical cable sheath production equipment shown includes: a storage drum with a wire pay-off device 1, a passive double-wheel tension device 3, a non-metallic fiber cable rounding device 4, a first online diameter measuring instrument 5, a dehumidification device 6, a vacuuming device 7, a sheath layer material extrusion device 8, a cooling system 10, an active double-wheel traction device 11 and a storage drum with a wire take-up device 12, which are arranged in sequence from front to back, and can be controlled by a controller to realize automated production.

[0042] In this embodiment, the non-metallic umbilical cable uses non-metallic fibers such as aramid or LCP as the load-bearing material to make a cable core with a load-bearing armor layer. The load-bearing fiber line density in the load-bearing armor layer reaches more than 5000000Dtex, with high tensile strength, light weight, and a breaking force of up to 200T, which can meet the application of non-metallic umbilical cables with high load requirements.

[0043] The load-bearing armor layer contains hundreds or even thousands of fiber bundles. After the cable core is wound onto the circular storage reel, the fiber bundles have a large degree of freedom. When the cable core is bent, the load-bearing fibers will move, resulting in a loss of force consistency in the load-bearing fibers. In this embodiment, the active two-wheel traction device 11 and the passive two-wheel tension device 3 are controlled, and the passive two-wheel tension device 3 is made to lag behind the active two-wheel traction device 11, so as to achieve online pre-stretching of the load-bearing armor layer on the non-metallic umbilical cable, thereby improving the force consistency of the load-bearing fibers in the load-bearing armor layer and ensuring the tensile strength.

[0044] In addition, the active two-wheel traction device 11 and the passive two-wheel tension device 3 only apply a large tension to the load-bearing armor layer on the cable core between the active two-wheel traction device 11 and the passive two-wheel tension device 3, so that the wire reeling and unreeling process is not affected by the large tension.

[0045] In this embodiment, a first pay-out and take-up balancer 2 is provided between the storage drum pay-out 1 and the passive double-wheel tension device 3, and a second pay-out and take-up balancer 15 is provided between the active double-wheel traction device 11 and the storage drum take-up 12. The limit sensing of the cable core pay-out and take-up process is performed by the first pay-out and take-up balancer 2 and the second pay-out and take-up balancer 15, and the pay-out and take-up speed is adjusted by the controller, so that the production line between the active double-wheel traction device 11 and the storage drum take-up 12 is kept under high tension while the pay-out and take-up is not affected.

[0046] After the cable core is rolled onto the storage drum, the load-bearing armor layer on the cable core at the bottom of the storage drum is laminated by multiple load-bearing armor layers. Because there is no protection from the sheath layer temporarily, the deformation is aggravated and the roundness is lost. Not only will the load-bearing strength be reduced, but the consistency of the wall thickness of the sheath layer produced subsequently will also be reduced, and it needs to be restored to roundness. In this embodiment, the non-metallic fiber cable rounding device 4 is provided with multiple groups of transverse rounding rollers and vertical rounding rollers that match the cable core of the non-metallic umbilical cable. The load-bearing armor layer of the cable core passing through the non-metallic fiber cable rounding device 4 is rounded, and the first online diameter measuring instrument 5 is used for monitoring, which facilitates the adjustment of the non-metallic fiber cable rounding device 4 to ensure the roundness of the load-bearing armor layer on the cable core.

[0047] The moisture contained in the non-metallic fiber will affect the appearance and wall thickness of the sheath layer, and in severe cases will cause damage to the sheath layer, which requires dehumidification. In this embodiment, the dehumidification device 6 includes a hot air flow pipe 16 and a radiation heater 17. The hot air flow pipe 16 is concentrically arranged in front of the radiation heater 17. The cable core first passes through the hot air flow pipe 16 to use hot air to dehumidify and dry the load-bearing armor layer, and then passes through the radiation heater 17 for further drying.

[0048] A hot air blower is externally provided on one side of the hot air flow pipe 16, which can deliver hot air into the hot air flow pipe 16 to heat the surface of the cable core passing through the hot air flow pipe 16. The radiation heater 17 includes a cylinder and a ray tube of an annular array arranged in the cylinder, which emits rays of a specific wavelength to penetrate the inner and outer multi-layer armor, so that the multi-layer non-metallic fibers in the load-bearing armor layer can absorb the specific rays, heat up quickly, ensure that the surface non-metallic fibers are completely dehumidified, and the rays of a specific wavelength do not affect the internal structure of the cable core, maintaining a relatively low temperature inside the cable core.

[0049] like Figure 2 As shown, the vacuum equipment 7 includes a reducing die 18, a vacuum pump 20 and a sleeve 19. The sleeve 19 is arranged between the reducing die 18 and the sheath layer material extrusion equipment 8. Before the cable core enters the sheath layer material extrusion equipment 8, it first passes through the reducing die 18 to radially compress the load-bearing armor layer with a certain elasticity, so as to ensure the tightness of the load-bearing armor layer and reduce the workload of vacuuming.

[0050] The sheath layer material extrusion device 8 is provided with an extrusion temperature control module 9 to control the extrusion temperature of the sheath layer material extrusion device 8 to ensure the fluidity of the molten material during the extrusion process. A pipeline is provided between one side of the sleeve 19 and the vacuum pump 20 to evacuate the sleeve 19, thereby evacuating the load-bearing armor layer on the cable core and forming a negative pressure cavity in the gap on the load-bearing armor layer, so that when the load-bearing armor layer passes through the sheath layer material extrusion device 8 to extrude the sheath layer, part of the molten material of the sheath layer will be sucked into part of the gap to increase the bonding strength.

[0051] A second online diameter measuring instrument 13 is provided between the jacket material extrusion device 8 and the cooling system 10 to measure the diameter of the jacket extruded. A third online diameter measuring instrument 14 is provided between the cooling system 10 and the active double-wheel traction device 11 to measure the diameter of the jacket after cooling and shaping, so as to detect abnormalities in time and adjust the process parameters.

[0052] A production process for a non-metallic umbilical cable sheath layer comprises the following steps:

[0053] After the cable core is wound onto the cable storage drum, the cable storage drum unwinder 1 is used to unwind the cable core, and the active two-wheel traction device 11 and the passive two-wheel tension device 3 are controlled by the controller, so that the passive two-wheel tension device 3 lags behind the active two-wheel traction device 11, thereby realizing the online pre-stretching of the load-bearing armor layer on the non-metallic umbilical cable, improving the force consistency of the load-bearing fibers in the load-bearing armor layer, and controlling the tension value F;

[0054] In this embodiment, the value of the tension value F is relatively large, and the specific calculation formula is as follows:

[0055] ,in:

[0056] is the linear density of the i-th layer of armor;

[0057] is the elastic modulus of the i-th layer of armor fiber;

[0058] is the angle of the i-th layer of fiber armor;

[0059] is the fiber density;

[0060] is the online tensile strain, The value is generally 4~7‰, which is related to the allowable strain value of the functional unit of the umbilical cable product;

[0061] is the output coefficient, The value is generally 60~80%, which is related to the non-metallic armor method;

[0062] Under the action of pre-stretching force, the load-bearing armor layer is calibrated through multiple sets of transverse and vertical calibration rollers on the non-metallic fiber cable calibration equipment 4 that match the cable core of the non-metallic umbilical cable, so as to improve the consistency of the wall thickness of the subsequent sheath layer extrusion and ensure the protective effect of the sheath layer;

[0063] The load-bearing armor layer after rounding is tested by the first online diameter measuring instrument 5, and the non-metallic fiber cable rounding device 4 is maintained or adjusted according to the test result;

[0064] The load-bearing armor layer is dehumidified by using the dehumidification device 6. The load-bearing armor layer first passes through the hot air flow pipe 16, and the hot air is used for the first dehumidification to take away the moisture on the load-bearing armor layer, thereby ensuring the appearance and wall thickness quality of the subsequent sheath layer and avoiding damage to the sheath layer;

[0065] The load-bearing armor layer is then dehumidified for the second time by using the radiation heater 17. The characteristic of the non-metallic fiber in the load-bearing armor layer absorbing specific rays and heating up is utilized, and the ray tube is used to emit rays of specific wavelength to the load-bearing armor layer. For example, the non-metallic fiber takes aramid (aramid model Twaron 2200) as an example. When the wavelength range is 0.6-2.3um, the absorption effect is more than 90%, and it penetrates the inner and outer multi-layer armor, so that the multi-layer non-metallic fiber absorbs the specific rays at the same time, and the heating speed is fast, so that the moisture is completely evaporated in a short time, but the internal structure of the cable core is not affected.

[0066] like Figure 2 As shown, the elastic compression of the load-bearing armor layer is performed by the diameter reduction die in the vacuum device 7 to control the outer diameter of the load-bearing armor layer, thereby improving the compactness and uniformity of the load-bearing armor layer and facilitating the improvement of the efficiency of subsequent vacuum extraction;

[0067] Before the cable core is sent into the sheath material extrusion device 8 through the sheath, the sheath 19 is evacuated by a vacuum pump 20, so that a negative pressure effect is generated in the gap of the load-bearing armor layer on the surface of the cable core, further reducing the residual moisture in the load-bearing armor layer;

[0068] The temperature of the sheath layer material extrusion device 8 is controlled by the extrusion temperature control module, and the sheath layer material is melt-extruded by the sheath layer material extrusion device 8. The negative pressure effect of the load-bearing armor layer is used to absorb part of the sheath layer material into the gap of the load-bearing armor layer, thereby strengthening the combination of the sheath layer and the load-bearing armor layer, and improving the adhesion of the sheath layer to the load-bearing armor layer. When the sheath layer is subjected to huge friction or the load-bearing armor layer is subjected to large tension, the load-bearing armor layer and the sheath layer are not easy to separate, and the service life is long;

[0069] The jacket layer is cooled and shaped by the cooling system 10, and the jacket layer after cooling and shaping is measured online by the third online diameter measuring instrument 14, so as to find abnormalities in time and adjust the process parameters;

[0070] The wire storage reel is used for winding. During the winding process, the active double-wheel traction device 11 cooperates with the passive double-wheel tension device 3 to isolate the wire storage reel pay-off 1 and the wire storage reel take-up 12 from large-force tension, so that the winding and unwinding process is not affected by large-force tension.

[0071] In summary, the non-metallic umbilical cable sheath layer production equipment and production process pointed out in the present invention improve the sheath layer production process of the heavy-loaded non-metallic umbilical cable, realize the production of the sheath layer, which is beneficial to improve the compactness of the load-bearing armor layer and the quality of the sheath layer, and enhance the structural strength of the load-bearing armor layer and the sheath layer.

[0072] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A non-metallic umbilical cable sheath production equipment, characterized in that: include: Arranged in sequence from front to back are a wire storage drum with a wire pay-off, a passive double-wheel tension device, a non-metallic fiber cable rounding device, a first online diameter measuring instrument, a dehumidification device, a vacuuming device, a jacket material extrusion device, a cooling system, an active double-wheel traction device and a wire storage drum with a wire take-up. The dehumidification device comprises a hot air flow pipe and a radiation heater. The vacuuming device comprises a reduction die, a vacuum pump and a sleeve. The sleeve is arranged between the reduction die and the jacket material extrusion device. A pipeline is arranged between one side of the sleeve and the vacuum pump to evacuate the sleeve. The hot air flow pipe is concentrically arranged in front of the radiation heater. The radiation heater comprises a cylinder and a ring-shaped array of ray tubes arranged in the cylinder.

2. The non-metallic umbilical cable sheath production equipment according to claim 1, characterized in that: A first wire-reeling and -releasing balancer is arranged between the wire storage drum pay-out device and the passive double-wheel tension device, and a second wire-reeling and -releasing balancer is arranged between the active double-wheel traction device and the wire storage drum take-up device.

3. The non-metallic umbilical cable sheath production equipment according to claim 1, characterized in that: A second online diameter measuring instrument is arranged between the jacket layer material extrusion device and the cooling system, a third online diameter measuring instrument is arranged between the cooling system and the active double-wheel traction device, and an extrusion temperature control module is arranged on the jacket layer material extrusion device.

4. The non-metallic umbilical cable sheath production equipment according to claim 1, characterized in that: A hot air blower is externally arranged on one side of the hot air flow pipe.

5. A production process for a non-metallic umbilical cable sheath layer, characterized in that: The non-metallic umbilical cable sheath production equipment according to any one of claims 1 to 4 comprises the following steps: The active two-wheel traction device and the passive two-wheel tension device are controlled by the controller, so that the passive two-wheel tension device lags behind the active two-wheel traction device, so as to realize the online pre-stretching of the load-bearing armor layer on the non-metallic umbilical cable, improve the force consistency of the load-bearing fibers in the load-bearing armor layer, and control the tension value F; Under the action of pre-stretching force, the load-bearing armor layer is calibrated through multiple sets of transverse calibrating rollers and vertical calibrating rollers on the non-metallic fiber cable calibrating equipment that match the cable core of the non-metallic umbilical cable; The load-bearing armor layer is dehumidified by using dehumidification equipment. The load-bearing armor layer first passes through a hot air flow pipe, and hot air is used for the first dehumidification to remove moisture on the load-bearing armor layer. The load-bearing armor layer then passes through a radiation heater for the second dehumidification. The non-metallic fibers in the load-bearing armor layer absorb specific rays and heat up, and the rays of a specific wavelength are emitted to the load-bearing armor layer, penetrating the inner and outer multi-layer armor, so that the multi-layer non-metallic fibers absorb the specific rays at the same time, accelerating the temperature rise, and completely evaporating the moisture. The outer diameter of the load-bearing armor layer is controlled by elastically compressing the load-bearing armor layer through a diameter reduction die in a vacuum device; Before the cable core is sent into the sheath layer material extrusion equipment through the sheath, the sheath is evacuated by a vacuum pump to produce a negative pressure effect on the load-bearing armor layer on the surface of the cable core. The temperature of the sheath layer material extrusion equipment is controlled by an extrusion temperature control module. The sheath layer material is melt-extruded through the sheath layer material extrusion equipment, and part of the sheath layer material is sucked into the gap of the load-bearing armor layer by the negative pressure effect of the load-bearing armor layer. The jacket layer is cooled and shaped by a cooling system; The wire storage reel is used for winding.

6. The production process of the non-metallic umbilical cable sheath layer according to claim 5, characterized in that: The calculation formula of tension value F is as follows: 。 7. The production process of the non-metallic umbilical cable sheath layer according to claim 5, characterized in that: Through the cooperation of active double-wheel traction equipment and passive double-wheel tension equipment, the large-force tension is isolated for the wire storage drum pay-out device and the wire storage drum take-up device, so that the process of taking up and releasing the wire is not affected by the large force.

8. The production process of the non-metallic umbilical cable sheath layer according to claim 5, characterized in that: The load-bearing armor layer after rounding is tested by a first online diameter measuring instrument, and the non-metallic fiber cable rounding equipment is maintained or adjusted according to the test result.

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