Torsion-resistant and bearing-resistant control cable for top drive

Abstract

The utility model relates to a top drive torsion-resistant bearing-resistant control cable, which comprises an aramid fiber reinforced conductor arranged at the central position, the aramid fiber reinforced conductor comprises an aramid fiber rope and a conductor, and the aramid fiber rope is arranged at the center of the conductor; an insulating layer, an isolating layer and a sheath layer are sequentially sleeved outside the conductor, a transverse T-shaped groove is formed in the surface of the sheath layer along the circumferential direction, and a transverse isolating strip is arranged in the transverse T-shaped groove; the transverse isolating bars are I-shaped, and the lower parts of the transverse isolating bars are arranged in the T-shaped grooves. According to the torsion-resistant and bearing-resistant control cable for the top drive, the surface of the sheath layer is provided with the T-shaped grooves along the circumferential direction, the isolating bars are arranged in the T-shaped grooves, and the isolating bars are movably connected with the cable body, so that when a certain isolating bar is damaged, the corresponding isolating bar is replaced, the operation is convenient, the maintenance cost is reduced, and the service life of the cable is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, and specifically, to a torsion-resistant and load-bearing control cable for top drives. Background Art

[0002] The oil and gas industry is not easy, especially in the upstream production and exploitation fields. Affected by oil prices, today's oil refineries must be more efficient to gain a foothold in the market. The top drive is the core energy supply system of an oil refinery and has a decisive impact on its efficiency. For relatively old facilities, the energy supply system must be as easy to maintain as possible and cost-effective. For new systems, the energy supply system must be matched with the automation level of the system according to time factors. Currently, new systems are gradually replacing old systems.

[0003] The top drive motor is fixedly installed on the derrick and reciprocates up and down during oil production. The top drive cable is connected to the top drive motor and moves with the equipment, making stable and reliable lifting, curling, retracting and other follow-up actions without breaking, cracking, or being affected by the climate, and can be used for a long time in dry or wet environments. This requires the cable to have properties such as heat resistance, cold resistance, oil resistance, water resistance, sunlight resistance, corrosion resistance, wear resistance, torsion resistance, load resistance, and high mechanical strength.

[0004] The commonly used control cables in China use polyvinyl chloride insulation and polyvinyl chloride sheath, and are suitable for use in industrial and mining enterprises, energy and transportation departments, for control and protection circuits with an alternating current rated voltage of 450 / 750 volts or less. The cables are usually used fixedly and laid in tunnels or cable trenches, and are not suitable for occasions with frequent movement. When the cable is bent frequently, the cable conductor is prone to break; moreover, the cable sheath often comes into contact with oil, water, etc., and the conventional control cable will crack after being used for a period of time. Summary of the Utility Model

[0005] In view of the above deficiencies in the prior art, the utility model provides a torsion-resistant and load-bearing control cable for top drives with a simple structure and an extended service life.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A torsion-resistant and load-bearing control cable for top drives includes an aramid-reinforced conductor arranged at the central position. The aramid-reinforced conductor includes: an aramid rope and a conductor, and the aramid rope is arranged at the center of the conductor; an insulating layer, an isolating layer, and a sheath layer are sequentially sleeved outside the conductor.

[0008] Transverse T-shaped grooves are arranged on the surface of the sheath layer along the circumferential direction, and transverse isolating strips are arranged in the transverse T-shaped grooves.

[0009] The transverse isolation strip is in an I-shape, and the lower part of the transverse isolation strip is arranged in a T-shaped groove.

[0010] Preferably, the lower portion of the transverse isolation strip is adapted to the T-shaped groove; and the width of the upper portion of the transverse isolation strip is greater than the width of the lower portion of the isolation strip.

[0011] Preferably, the cable aramid reinforced conductor adopts a twisted aramid rope, and the conductor adopts the sixth type of tinned soft copper conductor;

[0012] Preferably, the cable insulation layer is made of high temperature resistant, soft, and high volume resistivity silicone rubber material;

[0013] Preferably, the cable sheath layer is made of high-strength soft polyurethane;

[0014] Preferably, the surface of the isolation strip is a cable braided coating layer, the cable braided coating layer is woven with cotton rope, and the surface of the cable braided coating layer is coated with fire retardant paint and waterproof paint.

[0015] A torsion-resistant and load-resistant control cable for a top drive includes an aramid reinforced conductor arranged at a central position, the aramid reinforced conductor includes: an aramid rope and a conductor, the aramid rope is arranged at the center of the conductor; the outer sheath of the conductor is sequentially provided with an insulating layer, a separation layer, and a sheath layer.

[0016] A movable protective layer is arranged outside the sheath layer;

[0017] The movable protective layer is movably connected to the sheath layer;

[0018] The surface of the sheath layer is provided with transverse T-shaped grooves along the circumferential direction;

[0019] The lower surface of the movable protective layer is provided with a T-shaped protrusion;

[0020] The T-shaped protrusion is arranged in the T-shaped groove.

[0021] A torsion-resistant and load-resistant control cable for a top drive includes an aramid reinforced conductor arranged at a central position, the aramid reinforced conductor includes: an aramid rope and a conductor, the aramid rope is arranged at the center of the conductor; the outer sheath of the conductor is sequentially provided with an insulating layer, a separation layer, and a sheath layer.

[0022] The surface of the sheath layer is provided with transverse T-shaped grooves along the circumferential direction;

[0023] A transverse isolation strip is provided in the T-shaped groove;

[0024] A longitudinal T-shaped groove is provided between adjacent isolation bars;

[0025] A longitudinal isolation strip is provided in the longitudinal T-shaped groove;

[0026] The two ends of the longitudinal isolation strip are separated from the transverse isolation strip;

[0027] The transverse isolation strip and the longitudinal isolation strip are of a split structure.

[0028] A torsion-resistant and load-bearing control cable for a top drive includes an aramid-reinforced conductor arranged at the central position. The aramid-reinforced conductor includes: an aramid rope and a conductor, and the aramid rope is arranged at the center of the conductor; an insulating layer, an isolation layer, and a sheath layer are sequentially sleeved outside the conductor.

[0029] Transverse T-shaped grooves are arranged on the surface of the sheath layer along the circumferential direction.

[0030] Longitudinal T-shaped grooves are arranged on the surface of the sheath layer along the length direction of the cable.

[0031] The longitudinal T-shaped grooves and the transverse T-shaped grooves are communicated with each other.

[0032] A transverse isolation strip and a longitudinal isolation strip are arranged outside the sheath layer.

[0033] The transverse isolation strip and the longitudinal isolation strip are respectively arranged in the transverse T-shaped groove and the longitudinal T-shaped groove.

[0034] The beneficial effects of the present utility model compared with the prior art:

[0035] For the torsion-resistant and load-bearing control cable for a top drive of the present utility model, transverse T-shaped grooves are arranged on the surface of the sheath layer along the circumferential direction, isolation strips are arranged in the T-shaped grooves, and the isolation strips are movably connected to the cable body. When a certain isolation strip is damaged, the corresponding isolation strip can be replaced, which is convenient for operation, reduces the maintenance cost, and prolongs the service life of the cable.

[0036] For the torsion-resistant and load-bearing control cable for a top drive of the present utility model, a movable protective layer is arranged outside the sheath layer; the protective layer is movably connected to the sheath layer; the movable protective layer completely wraps the surface of the cable, which can better protect the cable and prolong the service life of the cable.

[0037] For the torsion-resistant and load-bearing control cable for a top drive of the present utility model, transverse T-shaped grooves are arranged on the surface of the sheath layer along the circumferential direction; transverse isolation strips are arranged in the T-shaped grooves; longitudinal T-shaped grooves are arranged between adjacent isolation strips; longitudinal isolation strips are arranged in the longitudinal T-shaped grooves; both ends of the longitudinal isolation strips are separated from the transverse isolation strips; the transverse isolation strip and the longitudinal isolation strip are of a split structure. When a certain isolation strip is damaged, the corresponding isolation strip can be replaced, which is convenient for operation, reduces the maintenance cost, and prolongs the service life of the cable.

[0038] The torsion-resistant and load-bearing control cable for a top drive of the present utility model has a simple structure, and the cable has high heat resistance, cold resistance, oil resistance, water resistance, sunlight resistance, corrosion resistance, wear resistance, torsion resistance, load-bearing capacity, and mechanical strength. It not only enhances the service life of the cable, reduces the cost of the cable, but also facilitates the use of customers.

[0039] The conductor of the control cable uses the 5th or 6th type of soft copper conductor, and the conductor production process is stranding by a bunching machine. The conductor stranded by the bunching machine can meet general complete occasions, but when used on the top drive, the phenomenon of broken cores often occurs.

[0040] An aramid rope is added inside the conductor of the top drive torsion-resistant and load-bearing control cable disclosed by the present novelty, which increases the tensile performance of the cable. The single filaments are braided by a braiding machine outside the aramid rope. The conductor produced by this process can not only withstand strong tensile force but also has good bending performance.

[0041] The insulating layer of the top drive torsion-resistant and load-bearing control cable disclosed by the present novelty uses silicone rubber. Silicone rubber is a rubber material and is relatively soft. At the same time, silicone rubber also has good low-temperature resistance, weather resistance, water resistance, etc. Even if the outer sheath is damaged, the cable can still operate safely for a period of time, leaving a time margin for replacing the cable.

[0042] The sheath layer of the top drive torsion-resistant and load-bearing control cable disclosed by the present novelty uses flexible polyurethane. The wear resistance of flexible polyurethane is superior. Especially under working conditions where there are wetting media such as water and oil, its wear resistance is often several times to dozens of times that of ordinary rubber materials. In addition, flexible polyurethane also has excellent oil resistance, ozone resistance, aging resistance, radiation resistance, low-temperature resistance, etc.; The control cable is provided with a movable braided coating layer, and the braided coating layer is both water-resistant and fire-resistant. Description of the Drawings

[0043] Figure 1 is a schematic structural diagram of the top drive torsion-resistant and load-bearing control cable of the present utility model;

[0044] Figure 2 is a schematic surface structure diagram of the sheath layer of the top drive torsion-resistant and load-bearing control cable of the present utility model;

[0045] Figure 3 is a schematic sectional structure diagram of the sheath layer of the top drive torsion-resistant and load-bearing control cable of the present utility model;

[0046] Figure 4 is a schematic structural diagram of the top drive torsion-resistant and load-bearing control cable of the present utility model provided with a transverse isolation strip;

[0047] Figure 5 is a schematic sectional structure diagram of the top drive torsion-resistant and load-bearing control cable of the present utility model provided with a transverse isolation strip;

[0048] Figure 6 is a schematic structural diagram of the top drive torsion-resistant and load-bearing control cable of the present utility model provided with a movable protective layer;

[0049] Figure 7It is a schematic structural view of the surface of the sheath layer of the torsion-resistant and load-bearing control cable for the top drive of the present utility model, with transverse T-shaped grooves and longitudinal T-shaped grooves provided;

[0050] Figure 8 It is a schematic structural view of the transverse isolation strip and the longitudinal isolation strip provided in the torsion-resistant and load-bearing control cable for the top drive of the present utility model;

[0051] Figure 9 It is another schematic structural view of the surface of the sheath layer of the torsion-resistant and load-bearing control cable for the top drive of the present utility model, with transverse T-shaped grooves and longitudinal T-shaped grooves provided.

[0052] Description of the main component symbols in the drawings:

[0053] In the figure:

[0054] 1. Aramid rope 2. Conductor

[0055] 3. Insulation layer 4. Isolation layer

[0056] 5. Sheath layer 6. Transverse T-shaped groove

[0057] 7. Transverse isolation strip 8. Movable protective layer

[0058] 9. Longitudinal T-shaped groove 10. Longitudinal isolation strip. Detailed implementation manners

[0059] The present utility model will be described in detail below with reference to the drawings and embodiments:

[0060] Att Figures 1-9 It can be seen that a torsion-resistant and load-bearing control cable for a top drive includes an aramid-reinforced conductor arranged at the central position. The aramid-reinforced conductor includes: an aramid rope 1 and a conductor 2, and the aramid rope 1 is arranged at the center of the conductor 2; an insulation layer 3, an isolation layer 4, and a sheath layer 5 are sequentially sleeved outside the conductor 2. Transverse T-shaped grooves 6 are arranged on the surface of the sheath layer along the circumferential direction, and transverse isolation strips 7 are arranged in the transverse T-shaped grooves;

[0061] The isolation strip is in an I shape, and the lower part of the isolation strip is arranged in the T-shaped groove.

[0062] Preferably, the lower part of the isolation strip is adapted to the T-shaped groove; the width of the upper part of the isolation strip is greater than the width of the lower part of the isolation strip.

[0063] Preferably, for the aramid-reinforced conductor of the cable, the aramid uses stranded aramid ropes, and the conductor uses the 6th type of tinned soft copper conductor;

[0064] Preferably, the insulation layer of the cable uses a silicone rubber material with high temperature resistance, softness, and high volume resistivity;

[0065] Preferably, the cable sheath layer is made of high-strength flexible polyurethane;

[0066] Preferably, the surface of the isolation strip is a cable braided coating layer. The cable braided coating layer is woven with cotton ropes, and the surface of the cable braided coating layer is coated with fireproof paint and waterproof paint.

[0067] A torsion-resistant and load-bearing control cable for a top drive includes an aramid-reinforced conductor arranged at the central position. The aramid-reinforced conductor includes: aramid rope 1 and conductor 2, and aramid rope 1 is arranged at the center of conductor 2; outside conductor 2, there are sequentially sleeved an insulating layer 3, an isolation layer 4, and a sheath layer 5, and an active protection layer 8 is arranged outside the sheath layer 5;

[0068] The active protection layer is movably connected to the sheath layer;

[0069] The surface of the sheath layer is provided with transverse T-shaped grooves along the circumferential direction;

[0070] The lower surface of the active protection layer is provided with transverse T-shaped protrusions;

[0071] The transverse T-shaped protrusions are arranged in the transverse T-shaped grooves.

[0072] A torsion-resistant and load-bearing control cable for a top drive includes an aramid-reinforced conductor arranged at the central position. The aramid-reinforced conductor includes: aramid rope 1 and conductor 2, and aramid rope 1 is arranged at the center of conductor 2; outside conductor 2, there are sequentially sleeved an insulating layer 3, an isolation layer 4, and a sheath layer 5, and transverse T-shaped grooves 6 are arranged on the surface of the sheath layer along the circumferential direction;

[0073] Transverse isolation strips 7 are arranged in the transverse T-shaped grooves 6;

[0074] Longitudinal T-shaped grooves 9 are arranged between adjacent isolation strips;

[0075] Longitudinal isolation strips 10 are arranged in the longitudinal T-shaped grooves;

[0076] Both ends of the longitudinal isolation strip 10 are separated from the transverse isolation strip 7;

[0077] The transverse isolation strip and the longitudinal isolation strip are of a split structure.

[0078] A torsion-resistant and load-bearing control cable for a top drive includes an aramid-reinforced conductor arranged at the central position. The aramid-reinforced conductor includes: aramid rope 1 and conductor 2, and aramid rope 1 is arranged at the center of conductor 2; outside conductor 2, there are sequentially sleeved an insulating layer 3, an isolation layer 4, and a sheath layer 5, and transverse T-shaped grooves 6 are arranged on the surface of the sheath layer 5 along the circumferential direction;

[0079] Longitudinal T-shaped grooves 9 are arranged on the surface of the sheath layer along the length direction of the cable;

[0080] The longitudinal T-shaped grooves and the transverse T-shaped grooves are communicated;

[0081] There are transverse isolation strips and longitudinal isolation strips arranged on the outer side of the sheath layer;

[0082] The transverse isolation strips and longitudinal isolation strips are respectively arranged in transverse T-shaped grooves and longitudinal T-shaped grooves.

[0083] For the torsion-resistant and load-bearing control cable for top drive of the utility model, T-shaped grooves are arranged on the surface of the sheath layer along the circumferential direction, isolation strips are arranged in the T-shaped grooves, and the isolation strips are movably connected to the cable body. When a certain isolation strip is damaged, the corresponding isolation strip can be replaced, which is convenient for operation, reduces the maintenance cost, and prolongs the service life of the cable.

[0084] For the torsion-resistant and load-bearing control cable for top drive of the utility model, a movable protective layer is arranged on the outer side of the sheath layer; the protective layer is movably connected to the sheath layer; the movable protective layer completely covers the surface of the cable, which can better protect the cable and prolong the service life of the cable.

[0085] For the torsion-resistant and load-bearing control cable for top drive of the utility model, transverse T-shaped grooves are arranged on the surface of the sheath layer along the circumferential direction; transverse isolation strips are arranged in the T-shaped grooves; longitudinal T-shaped grooves are arranged between adjacent isolation strips; longitudinal isolation strips are arranged in the longitudinal T-shaped grooves; both ends of the longitudinal isolation strips are separated from the transverse isolation strips; the transverse isolation strips and longitudinal isolation strips are of a split structure. When a certain isolation strip is damaged, the corresponding isolation strip can be replaced, which is convenient for operation, reduces the maintenance cost, and prolongs the service life of the cable.

[0086] The torsion-resistant and load-bearing control cable for top drive of the utility model has a simple structure, and the cable has high heat resistance, cold resistance, oil resistance, water resistance, sunlight resistance, corrosion resistance, wear resistance, torsion resistance, load-bearing capacity, mechanical strength, etc. It not only enhances the service life of the cable, reduces the cost of the cable, but also facilitates the use of customers.

[0087] The conductor of the control cable adopts the 5th or 6th type of soft copper conductor, and the conductor production process is bunching by a bunching machine. The conductor bunched by the bunching machine can meet general complete occasions, but when used on a top drive, the phenomenon of core breakage often occurs.

[0088] An aramid rope is added inside the conductor of the torsion-resistant and load-bearing control cable for top drive disclosed by the present new type, which increases the tensile performance of the cable. The single wires are braided by a braiding machine outside the aramid rope. The conductor produced by this process can not only withstand strong tensile force but also has good bending performance.

[0089] The insulation of the torsion-resistant and load-bearing control cable for traditional top drives uses polyvinyl chloride and a polyvinyl chloride sheath. Polyvinyl chloride is a plastic material, which is relatively hard and affects the bending performance of the cable. The control cable sheath uses polyvinyl chloride and a polyvinyl chloride sheath, and the cable often cracks after running for a period of time.

[0090] The insulation layer of the torsion-resistant and load-bearing control cable for the top drive disclosed in this new type uses silicone rubber. Silicone rubber is a rubber material and is relatively soft. At the same time, silicone rubber also has good low-temperature resistance, weather resistance, water resistance, etc. Even if the outer sheath is damaged, the cable can still operate safely for a period of time, leaving a time margin for replacing the cable.

[0091] The sheath layer of the torsion-resistant and load-bearing control cable for the top drive disclosed in this new type uses flexible polyurethane. Flexible polyurethane has excellent wear resistance. Especially under working conditions with wetting media such as water and oil, its wear resistance is often several to dozens of times that of ordinary rubber materials. In addition, flexible polyurethane also has excellent oil resistance, ozone resistance, aging resistance, radiation resistance, low-temperature resistance, etc. The control cable is provided with a movable braided coating layer, and the braided coating layer is both water-resistant and fire-resistant.

[0092] The above are only the preferred embodiments of the present utility model, and do not impose any formal restrictions on the structure of the present utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model all fall within the scope of the technical solutions of the present utility model.

Claims

1. A torsion-resistant and load-resistant control cable for a top drive, comprising an aramid reinforced conductor arranged at a central position, the aramid reinforced conductor comprising: Aramid rope and conductor, the aramid rope is arranged in the center of the conductor; the outer cover of the conductor is provided with an insulating layer, a separation layer and a sheath layer in sequence, characterized in that: The surface of the sheath layer is provided with a transverse T-shaped groove along the circumferential direction, and a transverse isolation strip is provided in the transverse T-shaped groove; The transverse isolation strip is in an I-shape, and the lower part of the transverse isolation strip is arranged in a T-shaped groove.

2. The torsion-resistant and load-resistant control cable for top drive according to claim 1 is characterized in that: The lower part of the transverse isolation strip is matched with the T-shaped groove; the width of the upper part of the transverse isolation strip is greater than the width of the lower part of the isolation strip.

3. The torsion-resistant and load-resistant control cable for top drive according to claim 2 is characterized in that: The cable has an aramid reinforced conductor, the aramid uses a twisted aramid rope, and the conductor uses the sixth type of tinned soft copper conductor.

4. The torsion-resistant and load-resistant control cable for top drive according to claim 2, characterized in that: The cable insulation layer is made of high temperature resistant, soft and high volume resistivity silicone rubber material.

5. The torsion-resistant and load-resistant control cable for top drive according to claim 2, characterized in that: The cable sheath layer is made of high-strength soft polyurethane.

6. The torsion-resistant and load-resistant control cable for top drive according to claim 2, characterized in that: The surface of the isolation strip is a cable braided coating layer, the cable braided coating layer is woven with cotton rope, and the surface of the cable braided coating layer is coated with fire retardant paint and waterproof paint.

7. A torsion-resistant and load-resistant control cable for a top drive, comprising an aramid reinforced conductor arranged at a central position, the aramid reinforced conductor comprising: Aramid rope and conductor, the aramid rope is arranged in the center of the conductor; the outer cover of the conductor is provided with an insulating layer, a separation layer and a sheath layer in sequence, characterized in that: A movable protective layer is arranged outside the sheath layer; The movable protective layer is movably connected to the sheath layer; The surface of the sheath layer is provided with transverse T-shaped grooves along the circumferential direction; The lower surface of the movable protective layer is provided with a T-shaped protrusion; The T-shaped protrusion is arranged in the T-shaped groove.

8. A torsion-resistant and load-resistant control cable for a top drive, comprising an aramid reinforced conductor arranged at a central position, the aramid reinforced conductor comprising: Aramid rope and conductor, the aramid rope is arranged in the center of the conductor; the outer cover of the conductor is provided with an insulating layer, a separation layer and a sheath layer in sequence, characterized in that: The surface of the sheath layer is provided with transverse T-shaped grooves along the circumferential direction; A transverse isolation strip is provided in the T-shaped groove; A longitudinal T-shaped groove is provided between adjacent isolation bars; A longitudinal isolation strip is provided in the longitudinal T-shaped groove; The two ends of the longitudinal isolation strip are separated from the transverse isolation strip; The horizontal isolation strip and the vertical isolation strip are separate structures.

9. A torsion-resistant and load-resistant control cable for a top drive, comprising an aramid reinforced conductor arranged at a central position, the aramid reinforced conductor comprising: Aramid rope and conductor, the aramid rope is arranged in the center of the conductor; the outer cover of the conductor is provided with an insulating layer, a separation layer and a sheath layer in sequence, characterized in that: The surface of the sheath layer is provided with transverse T-shaped grooves along the circumferential direction; The surface of the sheath layer is provided with longitudinal T-shaped grooves along the length direction of the cable; The longitudinal T-shaped groove and the transverse T-shaped groove are connected; Transverse isolation strips and longitudinal isolation strips are arranged on the outside of the sheath layer; The transverse isolation strip and the longitudinal isolation strip are respectively arranged in the transverse T-shaped groove and the longitudinal T-shaped groove.

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