Packaging pipe cable convenient to strip

Abstract

The invention discloses a packaging pipe cable convenient to strip, which comprises a pipeline with a circular section, a packaging layer is arranged outside the pipeline, the inner peripheral wall of the packaging layer is attached to the outer peripheral wall of the pipeline, and a plurality of stripping grooves are uniformly formed in the outer peripheral wall of the packaging layer in the circumferential direction; the cross section of the peripheral wall of the packaging layer is circular, and the number of the stripping grooves is three, namely, the interval between every two stripping grooves is 120 degrees; the inner end face of the stripping groove is arc-shaped, and the two side walls of the stripping groove are planar. According to the invention, the stripping grooves are uniformly formed in the periphery of the packaging layer of the packaging pipe cable, the walnut clamp jaw is convenient to position when the walnut embedding opening is used for stripping the packaging layer, and during stripping, the walnut clamp jaw only needs to be used for exerting force inwards, so that the packaging between the two grooves is turned up in a strip shape; afterwards, the packaging strip can be dragged in the axial direction of the pipeline so that the packaging pipe cable can be stripped. Therefore, the convenience of stripping operation of the packaging layer of the packaging pipe cable is effectively improved, and the inner pipe is prevented from being damaged.

Description

Technical Field

[0001] The present invention relates to the technical field of packaged pipe and cable, and in particular to a packaged pipe and cable which is easy to peel off. Background Art

[0002] In the field of oil extraction, encapsulated pipes and cables are often used. The encapsulated pipes and cables mainly include an external encapsulation layer and an internal protective tube. The encapsulated pipes and cables are used to protect the connection lines between underground mines and the ground. When the encapsulated pipes and cables are used, the external encapsulation layer at the end needs to be peeled off for easy connection. Due to the hardness and density of the encapsulation material, it is difficult to peel off the encapsulation layer of the encapsulated pipes and cables. At this stage, the outer layer of the encapsulation is mainly peeled off by cutting with a blade or adding a tear rope inside the encapsulation. First of all, the operation of cutting the encapsulation with a blade is cumbersome and may also cause damage to the inner tube. The method of adding a tear rope inside will encounter great resistance when dragging the rope, and the cutting effect of the encapsulation layer on the rope makes the rope easy to break. Secondly, the method of filling the rope inside increases the quality risk during the encapsulation extrusion production and increases the production cost of the pipe and cable. Therefore, a encapsulated pipe and cable that is easy to peel off is developed. Summary of the invention

[0003] The purpose of the present invention is to provide a packaging tube cable that is easy to strip, so as to solve the technical problems mentioned in the above background technology.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The present invention discloses an encapsulated pipe cable which is easy to strip, comprising a pipeline with a circular cross section, wherein an encapsulation layer is arranged outside the pipeline, wherein the inner peripheral wall of the encapsulation layer is in contact with the outer peripheral wall of the pipeline, and a plurality of stripping grooves are evenly arranged on the outer peripheral wall of the encapsulation layer along the circumferential direction.

[0006] Furthermore, the cross-section of the outer peripheral wall of the encapsulation layer is circular, and the number of the plurality of stripping grooves is three, that is, the interval between the stripping grooves is 120°.

[0007] Furthermore, the inner end surface of the stripping groove is arc-shaped, and the two side walls are flat.

[0008] Furthermore, the cross-section of the outer peripheral wall of the packaging layer is square.

[0009] Furthermore, the number of the plurality of stripping grooves is three, and they are respectively opened at the middle positions of three adjacent side walls of the packaging layer.

[0010] Furthermore, a color identification band is provided between the inner wall of the portion of the packaging layer where no stripping groove is provided and the outer wall of the pipeline.

[0011] Furthermore, the outer sleeve of the packaging layer is provided with a protective sleeve, the inner circumferential wall of the protective sleeve is evenly provided with a plurality of connecting ridges adapted to the stripping grooves along the circumferential direction, one end of the outer side of the protective sleeve is provided with a stripping sleeve, and the outer side of the stripping sleeve is fixedly provided with stripping mechanisms at positions corresponding to the connecting ridges.

[0012] Furthermore, each of the stripping mechanisms includes a sleeve fixedly arranged on the outside of the stripping sleeve, a sliding seat slidably engaged with the sleeve is arranged inside the sleeve, and a driving assembly for driving the sliding seat to move is arranged at the outer end of the sleeve; a cutting blade is fixedly arranged on one end of the sliding seat close to the stripping sleeve, and the middle part of the cutting blade slidably engages with a cutting groove opened on the stripping sleeve.

[0013] Furthermore, the drive assembly includes a threaded sleeve fixedly arranged at the outer end of the sleeve, the threaded sleeve is provided with a screw threadedly connected thereto, one end of the screw located inside the sleeve is rotatably connected to the slide seat, and one end of the screw located outside the sleeve is fixedly provided with a screwing handle.

[0014] Furthermore, a connecting head with an inverted T-shaped cross section is fixedly provided at one end of the screw rod located inside the sleeve, and the connecting head is rotatably matched with an inverted T-shaped connecting hole opened at the end of the slide seat.

[0015] Compared with the prior art, the beneficial technical effects of the present invention are:

[0016] The present invention evenly provides stripping grooves on the outer periphery of the encapsulation layer of the encapsulated tube and cable, which facilitates the positioning of the nutcracker jaws when the encapsulation layer is stripped using the nutcracker jaws. When stripping, it is only necessary to apply force inward through the nutcracker jaws to cut off the weak points of the encapsulation at the stripping grooves, so that the encapsulation between the two grooves is raised in a strip shape, and then the encapsulation strip can be dragged along the axial direction of the pipeline to strip the encapsulated tube and cable. This effectively improves the convenience of the encapsulation layer stripping operation of the encapsulated tube and cable, and avoids damage to the inner tube.

[0017] The inner bottom surface of the stripping groove of the present invention is an arc surface, which can make the packaging thickness of each point at the bottom of the groove remain consistent, thereby ensuring uniform stress at the bottom of the groove and reducing the risk of cracking of the packaging layer caused by stress concentration; and the bottom force is a curved surface structure, which can be suitable for clamping operations of nutcrackers with jaws of different sizes.

[0018] In addition, during production, the present invention only needs to adjust the mold shape and the length of the sizing zone to shape the molten thermoplastic into the required special-shaped package, and after cooling, the required special-shaped package layer can be formed. Compared with the processing method of adding tear ropes inside, the production cost of the packaged pipe and cable is effectively reduced, and it is conducive to ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a cross-sectional schematic diagram of an embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of a stripping groove according to the first embodiment of the present invention;

[0022] Figure 3 It is a schematic diagram of the peeling state of the first embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of a diameter reduction die used in the production of Example 1 of the present invention;

[0024] Figure 5 It is a cross-sectional schematic diagram of a second embodiment of the present invention;

[0025] Figure 6 It is a cross-sectional schematic diagram of Embodiment 3 of the present invention;

[0026] Figure 7 for Figure 6 A schematic diagram of the structure enlargement at the center A;

[0027] Figure 8 This is a longitudinal cross-sectional schematic diagram of Embodiment 3 of the present invention;

[0028] Explanation of the accompanying drawings: 1. Packaging layer; 2. Pipeline; 3. Peeling groove; 4. Color identification tape; 5. Protective cover; 6. Connecting ridge; 7. Sleeve; 8. Sliding seat; 9. Cutting blade; 10. Cutting blade groove; 11. Threaded sleeve; 12. Screw; 13. Connector; 14. Twist handle. DETAILED DESCRIPTION

[0029] The easy-to-strip packaging cable involved in the present invention is suitable for packaging pipelines coated with thermoplastic materials such as polyvinylidene fluoride (PVDF), polypropylene (PP), polyamide (PA), thermoplastic elastomer (TPE, TPU, TPR), thermoplastic vulcanized rubber (TPV), ethylene-tetrafluoroethylene copolymer (ETFE), polyperfluoroethylene propylene (FEP), ethylene chlorotrifluoroethylene copolymer (ECTFE), and polytetrafluoroethylene (PFA).

[0030] Embodiment 1

[0031] like Figure 1-Figure 2 As shown, a packaged pipe cable that is easy to strip includes a pipe 2 with a circular cross section, and the pipe 2 is used for filling oil for hydraulic control or for injection and conduction of chemical reagents. The outer sleeve of the pipe 2 is provided with a packaging layer 1, and the inner peripheral wall of the packaging layer 1 is in contact with the outer peripheral wall of the pipe 2, which is used to provide protection for the inner pipe 2 and can resist the corrosion of the downhole annulus fluid.

[0032] A plurality of stripping grooves 3 are uniformly provided on the outer wall of the encapsulation layer 1 along the circumferential direction. In the present embodiment, the cross-section of the outer wall of the encapsulation layer 1 is circular, and the number of the plurality of stripping grooves 3 is specifically three, that is, the interval between the stripping grooves is 120°.

[0033] like Figure 3 As shown, the application of the stripping groove 3 makes it easier to position the jaws of the nutcracker. When stripping, the nutcracker jaws are used to apply force inward to cut off the weak points of the package at the groove. This will cause the package between the two grooves to rise in a strip shape. At this time, the package strip can be dragged along the axial direction of the pipeline to be stripped along the groove.

[0034] To ensure the thickness of the packaging layer, the inner end surface of the stripping groove 3 is arc-shaped, and the two side walls are flat. The bottom of the groove is arc-shaped instead of a straight bottom, so that the packaging thickness at each point of the bottom of the groove can be kept consistent, which also ensures that the stress at the bottom of the groove is uniform and reduces the risk of cracking of the packaging layer caused by stress concentration; compared with the V-shaped groove or U-shaped groove, the square groove has a curved surface at the bottom, which can be used for nutcrackers with different sizes of jaws.

[0035] In this embodiment, a color identification band 4 is provided between the inner wall of the packaging layer where the stripping groove 3 is not provided and the outer wall of the pipeline 2. The color identification band 4 can be used to identify the inner tube of the package.

[0036] like Figure 4 As shown, when designing the mold in this embodiment, for special-shaped packaging tubes and cables, it is necessary to consider the shrinkage of the thermoplastic packaging material in the molten state and the solid state. For example, if the required size after cooling is φ11mm, it is necessary to consider the thickness of the packaging layer and the shape of the groove and design the mold to φ11.5mm. In order to ensure the shape of the groove, the length of the sizing zone also needs to be adjusted during mold design. An overly long sizing zone is prone to cause hanging material and scratches on the packaging surface. An overly short sizing zone will result in poor external packaging molding and unclear groove molding. In order to ensure the molding effect of special-shaped packaging, extrusion molding is required.

[0037] Embodiment 2

[0038] In this embodiment, without changing other structures of the first embodiment, the cross-section of the outer peripheral wall of the packaging layer is specifically set to be square.

[0039] In this embodiment, the number of the plurality of stripping grooves 3 is three, which are respectively opened in the middle of the three adjacent side walls of the packaging layer. The stripping method of this embodiment is the same as that of the first embodiment. In this embodiment, the stripping groove is flat-bottomed, and the direction with the color identification band 4 is limited by the thickness of the packaging layer, so no stripping groove is provided. When stripping, the adjacent two-sided packaging can be clamped off with the jaws, or the opposite side can be clamped off.

[0040] Embodiment 3

[0041] In this embodiment, without changing other structures of the first embodiment, a protective sleeve 5 is provided on the outside of the encapsulation layer 1. The protective sleeve 5 further improves the protective effect of the encapsulated pipe and cable. In particular, at the grooved portion of the encapsulation layer 1, the inner circumferential wall of the protective sleeve 5 is uniformly provided with a plurality of connecting convex strips 6 that match the stripping grooves 3 along the circumferential direction. The protective sleeve 5 is connected to the encapsulation layer 1 by matching the connecting convex strips 6 with the stripping grooves 3 one by one.

[0042] A stripping sleeve 15 is sleeved on one end of the outer side of the protective sleeve 5 . The stripping sleeve 15 is made of stainless steel. A stripping mechanism is fixedly provided on the outer side of the stripping sleeve 15 at a position corresponding to each of the connecting ridges 6 .

[0043] Each of the stripping mechanisms comprises a sleeve 7 fixedly arranged outside the stripping sleeve in the radial direction, a slide seat 8 slidably matched therewith is arranged inside the sleeve 7, and a driving assembly for driving the slide seat 8 is arranged at the outer end of the sleeve 7. A cutting blade 9 is fixedly installed at one end of the slide seat 8 close to the stripping sleeve 15, and the middle part of the cutting blade 9 is slidably matched with the cutting blade groove 10 provided on the stripping sleeve 15, and the cutting direction of the cutting blade 9 is directly facing the protective sleeve 5.

[0044] In this embodiment, the drive assembly includes a threaded sleeve 11 fixedly mounted on the outer end of the sleeve 7, a screw 12 threadedly connected thereto is mounted on the threaded sleeve 11, and one end of the screw 12 located inside the sleeve 7 is rotatably connected to the slide 8. Specifically: a connector 13 with an inverted T-shaped cross section is fixedly provided at one end of the screw 12 located inside the sleeve 7, and the connector 13 is rotatably matched with an inverted T-shaped connecting hole opened at the end of the slide 8. A screw handle 14 is fixedly provided at one end of the screw 12 located outside the sleeve 7.

[0045] This embodiment can further improve the protection effect of the packaged pipe and cable, especially the grooved part of the package layer, by providing a protective cover. Figure 6As shown, before the present invention is used, each of the cutting blades penetrates the corresponding cutting blade groove and enters the connection ridge of the protective sleeve 5 to a certain depth, so that the stripping sleeve can be fixed on the protective sleeve to avoid easy slipping. When the packaging layer of the pipe and cable needs to be stripped, the screw handles at the ends of each screw are rotated in sequence. During the rotation of the screw, since it is necessary to maintain a threaded connection with the threaded sleeve fixed on the sliding sleeve, it will drive the sliding seat inside the sliding sleeve to move linearly in the direction of the stripping sleeve. During the synchronous movement of the blade with the sliding seat, its cutting toughness will penetrate the connection ridge of the protective sleeve and enter the packaging layer to a certain depth. It should be noted here that the moving distance of the cutting blade needs to be controlled to avoid the cutting blade from damaging the inner tube after penetrating the packaging layer. After the feed adjustment of each cutting blade is completed by rotating the screw handle, the operator can apply a driving force to the outside of the multiple sliding sleeves, thereby pushing the entire stripping sleeve to slide along the axial direction of the packaging pipe and cable. During the sliding process of the stripping sleeve, each of the cutting blades cuts the protective sleeve into equal parts, and the operator can easily strip the protective sleeve. In addition, the cutting blade will leave cuts on the inner end surface of the stripping groove of the packaging layer during the process of cutting the protective sleeve, so that the packaging layer between the two stripping grooves can be more easily separated from the internal pipeline using a nutcracker later.

[0046] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A packaged pipe cable that is easy to strip, characterized in that: It comprises a pipeline with a circular cross section, wherein a packaging layer is arranged outside the pipeline, the inner peripheral wall of the packaging layer is fitted with the outer peripheral wall of the pipeline, and a plurality of stripping grooves are evenly opened on the outer peripheral wall of the packaging layer along the circumferential direction.

2. The easy-to-strip encapsulated tube and cable according to claim 1, characterized in that: The cross section of the outer peripheral wall of the packaging layer is circular, and the number of the plurality of stripping grooves is three, that is, the interval between the stripping grooves is 120°.

3. The easy-to-strip encapsulated tube and cable according to claim 2, characterized in that: The inner end surface of the stripping groove is arc-shaped, and the two side walls are plane-shaped.

4. The easy-to-strip encapsulated tube-cable according to claim 1, characterized in that: The cross section of the outer peripheral wall of the packaging layer is square.

5. The easy-to-strip encapsulated tube-cable according to claim 4, characterized in that: The number of the plurality of stripping grooves is three, and they are respectively opened at the middle positions of three adjacent side walls of the packaging layer.

6. The easy-to-strip encapsulated tube-cable according to claim 1, characterized in that: A color identification band is arranged between the inner wall of the portion of the packaging layer where no stripping groove is provided and the outer wall of the pipeline.

7. The easy-to-strip encapsulated tube-cable according to claim 1, characterized in that: The outer part of the packaging layer is provided with a protective sleeve, and the inner wall of the protective sleeve is evenly provided with a plurality of connecting convex strips matched with the stripping grooves along the circumferential direction, and one end of the outer part of the protective sleeve is provided with a stripping sleeve, and the outer part of the stripping sleeve is fixedly provided with stripping mechanisms at positions corresponding to the connecting convex strips.

8. The easy-to-strip encapsulated tube-cable according to claim 7, characterized in that: Each of the stripping and cutting mechanisms includes a sleeve fixedly arranged on the outside of the stripping sleeve, a sliding seat slidably matched with the sleeve is arranged inside the sleeve, and a driving component for driving the sliding seat to move is arranged at the outer end of the sleeve; a cutting blade is fixedly arranged on one end of the sliding seat close to the stripping sleeve, and the middle part of the cutting blade slidably matches with the cutting blade groove opened on the stripping sleeve.

9. The easy-to-strip encapsulated tube-cable according to claim 8, characterized in that: The drive assembly includes a threaded sleeve fixedly arranged at the outer end of the sleeve, the threaded sleeve is provided with a screw threadedly connected thereto, one end of the screw located inside the sleeve is rotatably connected to the slide seat, and one end of the screw located outside the sleeve is fixedly provided with a screwing handle.

10. The easy-to-strip encapsulated tube-cable according to claim 9, characterized in that: A connecting head with an inverted T-shaped cross section is fixedly provided at one end of the screw rod located inside the sleeve, and the connecting head is rotatably matched with an inverted T-shaped connecting hole opened at the end of the slide seat.

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