Novel pipeline for ocean and submarine pipeline system

Abstract

The utility model relates to a novel pipeline for ocean and a submarine pipeline system. The novel pipeline comprises a steel pipe unit, a first outer pipe unit, a second outer pipe unit, a third outer pipe unit, a connecting unit and a connector unit. The first outer pipe unit sleeves the steel pipe unit; the second outer pipe unit sleeves the steel pipe unit and is connected with the first outer pipe unit; the third outer pipe unit sleeves the steel pipe unit and is connected with the second outer pipe unit; the connecting unit is arranged at the end of the steel pipe unit, connected with the steel pipe unit, the first outer pipe unit and the second outer pipe unit and communicated with the steel pipe unit. The first end of the connector unit is connected with the second end of the connecting unit. The novel pipeline joint has the advantages that the first outer pipe unit, the second outer pipe unit and the third outer pipe unit which are different in hardness are arranged outside the steel pipe unit, so that the structural flexibility of the novel pipeline joint is improved, and the problems that the steel pipe joint material connected through welding is too high in hardness and prone to distortion and deformation when encountering vibration and the like are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline installation, in particular to a new type of pipeline and a submarine pipeline system used in the ocean. Background Art

[0002] Existing stainless steel pipes are all seamless steel pipes made of carbon steel, alloy steel and austenitic stainless steel. They are generally connected by welding during the installation process. Various defects may occur during the welding process, such as cracks, pores, slag inclusions, lack of fusion and incomplete penetration. These defects will seriously affect the quality of the welded joints and may cause leakage or other safety problems during the use of the pipeline. During the welding process, welding stress and deformation will be generated due to local heating and cooling. This may cause the shape of the pipeline to change, affecting the normal operation and installation accuracy of the pipeline. It is also easy to rust and age during use. The material hardness is too high and it is easy to torsion deformation when encountering floating vibration.

[0003] At present, no effective solution has been proposed for the problems existing in the relevant technology, such as the steel pipes connected by welding are prone to leakage, the material hardness of the connection is too high and it is easy to twist and deform when encountering vibration. Utility Model Content

[0004] The purpose of the utility model is to provide a new type of pipeline and submarine pipeline system for the ocean in view of the deficiencies in the prior art, so as to solve the problems existing in the related art that the steel pipes connected by welding are prone to leakage, the hardness of the material at the connection is too high and it is easy to be twisted and deformed when encountering vibration.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] In a first aspect, a novel pipeline for use in the ocean is provided, comprising:

[0007] Steel pipe unit;

[0008] A first outer tube unit, the first outer tube unit is sleeved on the steel tube unit and is located at an end of the steel tube unit;

[0009] a second outer tube unit, the second outer tube unit being sleeved with the steel tube unit and connected to the first outer tube unit, the hardness of the second outer tube unit being less than the hardness of the first outer tube unit;

[0010] a third outer tube unit, wherein the third outer tube unit is sleeved with the steel tube unit, an end of the third outer tube unit is connected to an end of the second outer tube unit away from the first outer tube unit, and the hardness of the third outer tube unit is greater than that of the second outer tube unit;

[0011] A connecting unit, wherein the connecting unit is arranged at the end of the steel tube unit, a first end of the connecting unit is respectively connected to the steel tube unit, the first outer tube unit, and the second outer tube unit, and is communicated with the steel tube unit, and a hardness of the connecting unit is equal to a hardness of the second outer tube unit;

[0012] A joint unit, wherein a first end of the joint unit is connected to a second end of the connection unit and communicates with the steel pipe unit, and a second end of the joint unit is connected to a pipeline structure.

[0013] In some embodiments, the connecting unit includes:

[0014] A sleeve element, wherein the sleeve element is arranged at the end of the steel tube unit, and the first end of the sleeve unit is sleeved with the first outer tube unit and the second outer tube unit;

[0015] A limiting element, wherein the limiting element is arranged inside the sleeve element, a first end of the limiting element abuts against an end of the steel tube unit and an end of the first outer tube unit, and a second end of the limiting element abuts against a first end of the joint unit;

[0016] A through element, which is arranged to penetrate the limiting element and is used to connect the steel pipe unit and the pipeline structure;

[0017] A sleeve element is arranged at the second end of the sleeve element and connected to the joint unit.

[0018] In some embodiments, the joint unit includes:

[0019] A joint element, which is disposed at the second end of the connection unit and is connected to the steel pipe unit;

[0020] A first connecting element, which is disposed at a first end of the connector element and is detachably connected to the connecting unit;

[0021] A joint element is arranged at the second end of the joint element and is detachably connected to the pipeline structure.

[0022] In some embodiments, there are two first outer tube units, and the two first outer tube units are symmetrically arranged at two ends of the steel tube unit;

[0023] There are two second outer tube units, which are symmetrically arranged at both ends of the steel tube unit and are respectively connected to the corresponding first outer tube unit and the third outer tube unit;

[0024] There are two connecting units, which are symmetrically arranged at both ends of the steel pipe unit and are respectively connected to the steel pipe unit, the corresponding first outer pipe unit, and the corresponding second outer pipe unit;

[0025] There are two joint units, which are symmetrically arranged at two ends of the steel pipe unit and are respectively connected to the corresponding connection units.

[0026] In some embodiments, the first outer tube unit is a polyether block polyamide tube; the second outer tube unit is a polyether block polyamide tube; the third outer tube unit is a nylon tube; and the connecting unit is a polyether block polyamide connecting piece.

[0027] In some of the embodiments, it also includes:

[0028] A reinforcing unit is arranged at the end of the first end of the connecting unit and is used to enhance the strength of the connecting unit.

[0029] In some of the embodiments, it also includes:

[0030] A smooth tube unit is coaxially arranged inside the steel tube unit and is connected to the steel tube unit and the connecting unit respectively.

[0031] In some of the embodiments, it also includes:

[0032] A sealing unit is provided to sleeve the first outer tube unit and is respectively connected to the first outer tube unit and the connecting unit.

[0033] In some of the embodiments, the connecting unit further comprises:

[0034] A groove element is disposed inside the first end of the connecting unit and is detachably connected to the sealing unit.

[0035] In some embodiments, there are two first outer tube units, and the two first outer tube units are symmetrically arranged at two ends of the steel tube unit;

[0036] There are two second outer tube units, which are symmetrically arranged at both ends of the steel tube unit and are respectively connected to the corresponding first outer tube unit and the third outer tube unit;

[0037] There are two connecting units, which are symmetrically arranged at both ends of the steel pipe unit and are respectively connected to the corresponding first outer pipe unit and the second outer pipe unit;

[0038] There are two joint units, which are symmetrically arranged at both ends of the steel pipe unit and are respectively connected to the corresponding connection units;

[0039] There are two sealing units, which are symmetrically arranged at two ends of the steel pipe unit and are respectively connected to the corresponding first outer pipe unit and the corresponding connecting unit.

[0040] In some of the embodiments, the first outer tube unit is a polyether block polyamide tube; the second outer tube unit is a polyether block polyamide tube; the third outer tube unit is a nylon tube; the connecting unit is a polyether block polyamide connecting piece; the reinforcing unit is a stainless steel reinforcing piece; and the smooth tube unit is a polytetrafluoroethylene tube.

[0041] In a second aspect, a bottom pipe system is provided, comprising:

[0042] At least one novel pipeline and at least one pipeline structure as described in the first aspect, wherein the pipeline structure is connected to the joint unit of the novel pipeline.

[0043] The utility model adopts the above technical solution, and compared with the prior art, has the following technical effects:

[0044] The utility model discloses a novel pipeline and submarine pipeline system for the ocean. By arranging a first outer pipe unit, a second outer pipe unit and a third outer pipe unit with different hardnesses on the outside of the steel pipe unit, the structural flexibility of the connection of the novel pipeline is improved, so that the novel pipeline is not easy to break, and the problems of easy leakage of steel pipes connected by welding and easy distortion and deformation of the connection due to excessive hardness of the material at the connection when encountering vibration are solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 is a schematic diagram of a novel pipeline according to an embodiment of the utility model (I);

[0046] Figure 2 is a schematic diagram of a connection unit according to an embodiment of the utility model (I);

[0047] Figure 3 is a schematic diagram of a joint unit according to an embodiment of the utility model;

[0048] Figure 4 is a schematic diagram of a novel pipeline according to an embodiment of the utility model (II);

[0049] Figure 5 is a schematic diagram of a novel pipeline according to an embodiment of the utility model (III);

[0050] Figure 6 is a schematic diagram of a novel pipeline according to an embodiment of the utility model (IV);

[0051] Figure 7 is a schematic diagram of a connection unit according to an embodiment of the utility model (II);

[0052] Figure 8 is a schematic diagram of a novel pipeline according to an embodiment of the utility model (V);

[0053] Fig. 9 is a schematic diagram of a novel pipeline according to an embodiment of the utility model (six);

[0054] Fig.10 It is a schematic diagram of a submarine pipeline system according to an embodiment of the utility model.

[0055] The reference numerals therein are: 100, novel pipeline;

[0056] 110. Steel pipe unit;

[0057] 120. a first outer tube unit;

[0058] 130, second outer tube unit;

[0059] 140, third outer tube unit;

[0060] 150, connecting unit; 151, sleeve element; 152, limiting element; 153, through element; 154, first connecting element; 155, groove element;

[0061] 160, joint unit; 161, joint element; 162, second connection element; 163, third connection element;

[0062] 170, Strengthening Unit;

[0063] 180, smooth pipe unit;

[0064] 190, sealing unit;

[0065] 200. Pipeline structure. DETAILED DESCRIPTION

[0066] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0067] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0068] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0069] Example 1

[0070] This embodiment relates to a novel pipeline of the utility model.

[0071] An illustrative embodiment of the present utility model is as follows: Figure 1 As shown, a new type of pipeline 100 for use in the ocean includes a steel pipe unit 110, a first outer pipe unit 120, a second outer pipe unit 130, a third outer pipe unit 140, a connection unit 150 and a joint unit 160. The first outer pipe unit 120 is sleeved on the steel pipe unit 110 and is located at the end of the steel pipe unit 110; the second outer pipe unit 130 is sleeved on the steel pipe unit 110 and connected to the first outer pipe unit 120, and the hardness of the second outer pipe unit 130 is less than the hardness of the first outer pipe unit 120; the third outer pipe unit 140 is sleeved on the steel pipe unit 110, and the end of the third outer pipe unit 140 is connected to the end of the second outer pipe unit 130 away from the first outer pipe unit 120, and the hardness of the third outer pipe unit 140 is greater than that of the first outer pipe unit 120. The hardness of the second outer tube unit 130 is equal to the hardness of the second outer tube unit 130; the connecting unit 150 is arranged at the end of the steel tube unit 110, the first end of the connecting unit 150 is respectively connected to the steel tube unit 110, the first outer tube unit 120, and the second outer tube unit 130, and is communicated with the steel tube unit 110, and the hardness of the connecting unit 150 is equal to the hardness of the second outer tube unit 130; the first end of the joint unit 160 is connected to the second end of the connecting unit 150 and is communicated with the steel tube unit 110, and the second end of the joint unit 160 is connected to the pipeline structure.

[0072] In some of the embodiments, the cross section of the steel pipe unit 110 is circular.

[0073] In some embodiments, the steel pipe unit 110 is a stainless steel pipe.

[0074] The size of the first outer tube unit 120 matches the size of the steel tube unit 110. Generally, the inner radial dimension of the first outer tube unit 120 is equal to the outer radial dimension of the steel tube unit 110, and the axial dimension of the first outer tube unit 120 is smaller than the axial dimension of the steel tube unit 110.

[0075] In some embodiments, the cross section of the first outer tube unit 120 is circular.

[0076] In some embodiments, the first outer pipe unit 120 is a polymer material pipe, wherein the polymer material includes but is not limited to polyether block polyamide.

[0077] In some embodiments, the first outer tube unit 120 is a polyether block polyamide tube.

[0078] In some embodiments, the second outer tube unit 130 is connected to the first outer tube unit 120 by hot melting.

[0079] The size of the second outer tube unit 130 matches the size of the steel tube unit 110. Generally, the inner radial dimension of the second outer tube unit 130 is equal to the outer radial dimension of the steel tube unit 110, and the axial dimension of the second outer tube unit 130 is smaller than the axial dimension of the steel tube unit 110.

[0080] The size of the second outer tube unit 130 matches the size of the first outer tube unit 120. Generally, the radial size of the outer contour of the second outer tube unit 130 is equal to the radial size of the outer contour of the first outer tube unit 120, the wall thickness of the second outer tube unit 130 is equal to the wall thickness of the first outer tube unit 120, and the axial size of the second outer tube unit 130 is greater than the axial size of the first outer tube unit 120.

[0081] In some embodiments, the cross section of the second outer tube unit 130 is circular.

[0082] In some embodiments, the second outer pipe unit 130 is a polymer material pipe, wherein the polymer material includes but is not limited to polyether block polyamide.

[0083] In some embodiments, the second outer tube unit 130 is a polyether block polyamide tube.

[0084] In some embodiments, the third outer tube unit 140 is connected to the second outer tube unit 130 by hot melting.

[0085] The size of the third outer tube unit 140 matches the size of the steel tube unit 110. Generally, the inner radial size of the third outer tube unit 140 is equal to the outer radial size of the steel tube unit 110, and the axial size of the third outer tube unit 140 is smaller than the axial size of the steel tube unit 110.

[0086] The size of the third outer tube unit 140 matches the size of the second outer tube unit 130. Generally, the radial size of the outer contour of the third outer tube unit 140 is equal to the radial size of the outer contour of the second outer tube unit 130, the wall thickness of the third outer tube unit 140 is equal to the wall thickness of the second outer tube unit 130, and the axial size of the second outer tube unit 130 is greater than the axial size of the third outer tube unit 140.

[0087] In some embodiments, the cross section of the third outer tube unit 140 is circular.

[0088] In some embodiments, the third outer pipe unit 140 is a polymer material pipe, wherein the polymer material includes but is not limited to polyether block polyamide.

[0089] In some embodiments, the third outer tube unit 140 is a polyether block polyamide tube.

[0090] like Figure 2 As shown, the connection unit 150 includes a sleeve element 151, a stopper element 152, a through element 153 and a first connection element 154. The sleeve element 151 is arranged at the end of the steel pipe unit 110, and the first end of the sleeve unit is sleeved with the first outer pipe unit 120 and the second outer pipe unit 130; the stopper element 152 is arranged inside the sleeve element 151, and the first end of the stopper element 152 abuts against the end of the steel pipe unit 110 and the end of the first outer pipe unit 120, and the second end of the stopper element 152 abuts against the first end of the joint unit 160; the through element 153 is arranged through the stopper element 152, and is used for connecting the steel pipe unit 110 and the pipeline structure; the first connection element 154 is arranged at the second end of the sleeve element 151, and is connected to the joint unit 160.

[0091] In some of the embodiments, the sleeve element 151 is connected to the first outer tube unit 120 and the second outer tube unit 130 by hot melting.

[0092] The size of the sleeve element 151 matches the size of the first outer tube unit 120 / the second outer tube unit 130. Generally, the radial size of the inner contour of the sleeve element 151 is not less than the radial size of the first outer tube unit 120 / the second outer tube unit 130, and the axial size of the sleeve element 151 is greater than the axial size of the first outer tube unit 120 and less than the sum of the axial sizes of the first outer tube unit 120 and the second outer tube unit 130.

[0093] In some of the embodiments, the cross section of the sleeve element 151 is circular.

[0094] In some of the embodiments, the sleeve element 151 is made of polyether block polyamide.

[0095] In some of the embodiments, the sleeve element 151 is a pipe connector.

[0096] The limiting element 152 is coaxially arranged with the sleeve element 151 .

[0097] In some of the embodiments, the limiting element 152 and the sleeve element 151 are integrally formed.

[0098] The size of the limiting element 152 matches the size of the sleeve element 151. Generally, the radial size of the outer contour of the limiting element 152 is equal to the radial size of the inner contour of the sleeve element 151, and the thickness of the limiting element 152 is smaller than the axial size of the sleeve element 151.

[0099] In some of the embodiments, the limiting element 152 is made of polyether block polyamide.

[0100] In some of the embodiments, the limiting element 152 is a snap-on disc.

[0101] The through element 153 is disposed through the limiting element 152 .

[0102] The size of the through element 153 matches the size of the steel tube unit 110. Generally, the radial dimension of the inner contour of the through element 153 is smaller than the radial dimension of the inner contour of the steel tube unit 110.

[0103] In some of the embodiments, the through element 153 is a through hole.

[0104] The first connecting element 154 is coaxially arranged with the sleeve element 151 .

[0105] In some embodiments, the first connecting element 154 and the sleeve element 151 are integrally formed.

[0106] The size of the first connecting element 154 matches the size of the sleeve element 151. Generally, the axial dimension of the outer contour of the first connecting element 154 is not greater than the axial dimension of the outer contour of the sleeve element 151.

[0107] The size of the first connection element 154 matches the size of the through element 153. Generally, the radial size of the inner contour of the first connection element 154 is not less than the radial size of the through element 153.

[0108] In some of the embodiments, the first connecting element 154 is made of polyether block polyamide.

[0109] In some of the embodiments, the first connecting element 154 is a connecting thread or a snap ring.

[0110] like Figure 3 As shown, the joint unit 160 includes a joint element 161, a second connection element 162 and a third connection element 163. The joint element 161 is arranged at the second end of the connection unit 150 and is connected to the steel pipe unit 110; the second connection element 162 is arranged at the first end of the joint element 161 and is detachably connected to the connection unit 150; the third connection element 163 is arranged at the second end of the joint element 161 and is detachably connected to the pipeline structure.

[0111] Specifically, the first end of the joint element 161 is sleeved inside the sleeve element 151 and abuts against the limiting element 152 .

[0112] The size of the joint element 161 matches the size of the sleeve element 151. Generally, the radial size of the outer contour of the joint element 161 is not greater than the radial size of the inner contour of the sleeve element 151, and the axial size of the joint element 161 is greater than the axial size of the sleeve element 151.

[0113] In some embodiments, the cross section of the joint element 161 is circular.

[0114] In some of the embodiments, the joint element 161 includes but is not limited to a steel pipe joint.

[0115] In some of the embodiments, the second connecting element 162 and the connector element 161 are integrally formed.

[0116] The size of the second connecting element 162 matches the size of the joint element 161. Generally, the axial size of the second connecting element 162 is smaller than the axial size of the joint element 161.

[0117] In some of the embodiments, the second connecting element 162 includes but is not limited to connecting threads and a snap ring.

[0118] In some embodiments, the third connecting element 163 and the connector element 161 are integrally formed.

[0119] The size of the third connecting element 163 matches the size of the joint element 161. Generally, the radial size of the outer contour of the third connecting element 163 is greater than the radial size of the outer contour of the joint element 161.

[0120] In some of the embodiments, the third connection element 163 includes but is not limited to a threaded interface.

[0121] The advantage of the utility model is that by arranging the first outer tube unit, the second outer tube unit and the third outer tube unit with different hardnesses on the outside of the steel tube unit, the structural flexibility of the connection of the new pipeline is improved, the new pipeline is not easy to break, and the problems of steel pipes connected by welding being prone to leakage and the connection being prone to twisting and deformation due to excessive hardness of the material when encountering vibration are solved.

[0122] Example 2

[0123] This embodiment is a supplementary embodiment of Embodiment 1.

[0124] like Figure 4 As shown, the novel pipeline 100 further includes a reinforcing unit 170 . The reinforcing unit 170 is disposed at the end of the first end of the connecting unit 150 to enhance the strength of the connecting unit 150 .

[0125] Specifically, the reinforcing unit 170 is disposed outside the middle portion of the sleeve element 151 .

[0126] In some of the embodiments, the reinforcing unit 170 is connected to the sleeve element 151 by heat fusion.

[0127] The size of the reinforcing unit 170 matches the size of the sleeve element 151. Generally, the radial size of the inner contour of the reinforcing unit 170 is equal to the radial size of the inner contour of the sleeve element 151, the axial size of the reinforcing unit 170 is smaller than the axial size of the sleeve element 151, and the radial size of the outer contour of the reinforcing unit 170 is not smaller than the radial size of the outer contour of the sleeve element 151.

[0128] In some of the embodiments, the axial cross-section of the reinforcement unit 170 is trapezoidal.

[0129] In some of the embodiments, the reinforcement unit 170 is a stainless steel connector.

[0130] The advantage of this embodiment is that the structural strength of the connection unit is improved by providing the reinforcement unit.

[0131] Example 3

[0132] This embodiment is a supplementary embodiment of Embodiments 1 and 2.

[0133] like Figure 5 As shown, the novel pipeline 100 further includes a smooth pipe unit 180. The smooth pipe unit 180 is coaxially disposed inside the steel pipe unit 110 and is connected to the steel pipe unit 110 and the connection unit 150 respectively.

[0134] Specifically, the end of the smooth tube unit 180 abuts against the limiting element 152 .

[0135] The size of the smooth tube unit 180 matches the size of the steel tube unit 110. Generally, the radial size of the outer contour of the smooth tube unit 180 is equal to the radial size of the inner contour of the steel tube unit 110, and the axial size of the smooth tube unit 180 is equal to the axial size of the steel tube unit 110.

[0136] The size of the smooth tube unit 180 matches the size of the through element 153. Generally, the radial dimension of the inner contour of the smooth tube unit 180 is greater than the radial dimension of the through element 153.

[0137] In some of the embodiments, the smooth tube unit 180 is a nylon tube.

[0138] The advantage of this embodiment is that, by providing a smooth pipe unit, the resistance of the liquid flowing through the new pipeline is reduced.

[0139] Example 4

[0140] This embodiment is a supplementary embodiment of Embodiments 1 to 3.

[0141] like Figure 6 As shown, the novel pipeline 100 further includes a sealing unit 190. The sealing unit 190 is sleeved on the first outer tube unit 120 and is connected to the first outer tube unit 120 and the connecting unit 150 respectively.

[0142] Specifically, the sealing unit 190 is connected to the sleeve element 151 .

[0143] In some of the embodiments, the sealing unit 190 is connected to the first outer tube unit 120 and the connecting unit 150 through the friction force of its own material.

[0144] The size of the sealing unit 190 matches the size of the first outer tube unit 120. Generally, the radial size of the inner contour of the sealing unit 190 is not less than the radial size of the outer contour of the first outer tube unit 120, and the thickness of the sealing unit 190 is less than the axial size of the first outer tube unit 120.

[0145] The size of the sealing unit 190 matches the size of the sleeve element 151. Generally, the radial size of the outer contour of the sealing unit 190 is smaller than the radial size of the inner contour of the sleeve element 151.

[0146] In some of the embodiments, the longitudinal cross-section of the sealing unit 190 is in the shape of a circular ring.

[0147] In some embodiments, the sealing unit 190 has a rectangular cross-section.

[0148] In some of the embodiments, the sealing unit 190 is a sealing gasket.

[0149] like Figure 7 As shown, the connection unit 150 further includes a groove element 155. The groove element 155 is disposed inside the first end of the connection unit 150 and is detachably connected to the sealing unit 190.

[0150] Specifically, the groove element 155 is disposed inside the sleeve element 151 and abuts against the limiting element 152 .

[0151] The groove element 155 is provided through the inner wall of the sleeve element 151 .

[0152] The size of the groove element 155 matches the size of the sealing unit 190. Generally, the thickness of the groove element 155 is equal to the thickness of the sealing unit 190, and the radial dimension of the groove element 155 is equal to the radial dimension of the sealing unit 190.

[0153] In some of the embodiments, the longitudinal section of the groove element 155 is circular.

[0154] In some of the embodiments, the cross-section of the groove element 155 is rectangular.

[0155] In some of the embodiments, the groove element 155 is a limiting groove.

[0156] The utility model has the advantage that the sealing performance of the novel pipeline is increased by arranging the sealing unit between the connecting unit and the first outer pipe unit.

[0157] Example 5

[0158] This embodiment is a supplementary embodiment of Embodiment 1.

[0159] like Figure 8 As shown, there are two first outer tube units 120, and the two first outer tube units 120 are symmetrically arranged at both ends of the steel tube unit 110; there are two second outer tube units 130, and the two second outer tube units 130 are symmetrically arranged at both ends of the steel tube unit 110, and are respectively connected to the corresponding first outer tube unit 120 and the third outer tube unit 140; there are two connecting units 150, and the two connecting units 150 are symmetrically arranged at both ends of the steel tube unit 110, and are respectively connected to the steel tube unit 110, the corresponding first outer tube unit 120, and the corresponding second outer tube unit 130; there are two joint units 160, and the two joint units 160 are symmetrically arranged at both ends of the steel tube unit 110, and are respectively connected to the corresponding connecting units 150.

[0160] The first outer tube unit 120 is a polyether block polyamide tube; the second outer tube unit 130 is a polyether block polyamide tube; the third outer tube unit 140 is a nylon tube; and the connecting unit 150 is a polyether block polyamide connecting piece.

[0161] Example 6

[0162] This embodiment is a supplementary embodiment of Embodiments 2 to 4.

[0163] like Fig. 9As shown, there are two first outer tube units 120, which are symmetrically arranged at both ends of the steel tube unit 110; there are two second outer tube units 130, which are symmetrically arranged at both ends of the steel tube unit 110, and are respectively connected to the corresponding first outer tube unit 120 and the third outer tube unit 140; there are two connecting units 150, which are symmetrically arranged at both ends of the steel tube unit 110, and are respectively connected to the corresponding first outer tube unit 120 and the second outer tube unit 130; there are two joint units 160, which are symmetrically arranged at both ends of the steel tube unit 110, and are respectively connected to the corresponding connecting units 150; there are two sealing units 190, which are symmetrically arranged at both ends of the steel tube unit 110, and are respectively connected to the corresponding first outer tube unit 120 and the corresponding connecting unit 150.

[0164] The first outer tube unit 120 is a polyether block polyamide tube; the second outer tube unit 130 is a polyether block polyamide tube; the third outer tube unit 140 is a nylon tube; the connecting unit 150 is a polyether block polyamide connecting piece; the strengthening unit 170 is a stainless steel strengthening piece; and the smooth tube unit 180 is a polytetrafluoroethylene tube.

[0165] Example 7

[0166] This embodiment relates to a submarine pipeline system of the utility model.

[0167] like Fig.10 As shown, a submarine pipeline system includes the novel pipeline 100 and the pipeline structure 200 as described in any one of Embodiments 1 to 6. The pipeline structure 200 is connected to the joint unit 160 of the novel pipeline 100.

[0168] Specifically, the two pipeline structures 200 are connected to the third connecting elements 163 respectively.

[0169] In some of the embodiments, the pipe structure 200 is connected to the third connecting element 163 by threads.

[0170] In some of the embodiments, the pipe structure 200 includes, but is not limited to, a steel pipe.

[0171] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A new type of pipeline for use in the ocean, characterized in that: include: Steel pipe unit; A first outer tube unit, the first outer tube unit is sleeved on the steel tube unit and is located at an end of the steel tube unit; a second outer tube unit, the second outer tube unit being sleeved with the steel tube unit and connected to the first outer tube unit, the hardness of the second outer tube unit being less than the hardness of the first outer tube unit; a third outer tube unit, wherein the third outer tube unit is sleeved with the steel tube unit, an end of the third outer tube unit is connected to an end of the second outer tube unit away from the first outer tube unit, and the hardness of the third outer tube unit is greater than the hardness of the second outer tube unit, and the hardness of the third outer tube unit is less than the hardness of the first outer tube unit; A connecting unit, wherein the connecting unit is arranged at the end of the steel tube unit, a first end of the connecting unit is respectively connected to the steel tube unit, the first outer tube unit, and the second outer tube unit, and is communicated with the steel tube unit, and a hardness of the connecting unit is equal to a hardness of the second outer tube unit; A joint unit, wherein a first end of the joint unit is connected to a second end of the connection unit and communicates with the steel pipe unit, and a second end of the joint unit is connected to a pipeline structure.

2. The novel pipeline according to claim 1 is characterized in that: The connecting unit comprises: A sleeve element, wherein the sleeve element is arranged at the end of the steel tube unit, and the first end of the sleeve element is sleeved with the first outer tube unit and the second outer tube unit; A limiting element, wherein the limiting element is arranged inside the sleeve element, a first end of the limiting element abuts against an end of the steel tube unit and an end of the first outer tube unit, and a second end of the limiting element abuts against a first end of the joint unit; A through element, which is arranged to penetrate the limiting element and is used to connect the steel pipe unit and the pipeline structure; A sleeve element is arranged at the second end of the sleeve element and connected to the joint unit.

3. The novel pipeline according to claim 1 is characterized in that: The joint unit comprises: A joint element, which is disposed at the second end of the connection unit and is connected to the steel pipe unit; A first connecting element, which is disposed at a first end of the connector element and is detachably connected to the connecting unit; A joint element is arranged at the second end of the joint element and is detachably connected to the pipeline structure.

4. The novel pipeline according to any one of claims 1 to 3, characterized in that: Also includes: A reinforcing unit, the reinforcing unit being arranged at an end portion of the first end of the connecting unit and being used to enhance the strength of the connecting unit; and / or A smooth tube unit, wherein the smooth tube unit is coaxially arranged inside the steel tube unit and is respectively connected to the steel tube unit and the connection unit; and / or A sealing unit is provided to sleeve the first outer tube unit and is respectively connected to the first outer tube unit and the connecting unit.

5. The novel pipeline according to claim 4 is characterized in that: The connecting unit further comprises: A groove element is disposed inside the first end of the connecting unit and is detachably connected to the sealing unit.

6. The novel pipeline according to any one of claims 1 to 3, characterized in that: There are two first outer tube units, and the two first outer tube units are symmetrically arranged at two ends of the steel tube unit; There are two second outer tube units, which are symmetrically arranged at both ends of the steel tube unit and are respectively connected to the corresponding first outer tube unit and the third outer tube unit; There are two connecting units, which are symmetrically arranged at both ends of the steel pipe unit and are respectively connected to the steel pipe unit, the corresponding first outer pipe unit, and the corresponding second outer pipe unit; There are two joint units, which are symmetrically arranged at two ends of the steel pipe unit and are respectively connected to the corresponding connection units.

7. The novel pipeline according to any one of claims 4 to 5, characterized in that: There are two first outer tube units, and the two first outer tube units are symmetrically arranged at two ends of the steel tube unit; There are two second outer tube units, which are symmetrically arranged at both ends of the steel tube unit and are respectively connected to the corresponding first outer tube unit and the third outer tube unit; There are two connecting units, which are symmetrically arranged at both ends of the steel pipe unit and are respectively connected to the corresponding first outer pipe unit and the second outer pipe unit; There are two joint units, which are symmetrically arranged at both ends of the steel pipe unit and are respectively connected to the corresponding connection units; There are two sealing units, which are symmetrically arranged at two ends of the steel pipe unit and are respectively connected to the corresponding first outer pipe unit and the corresponding connecting unit.

8. The novel pipeline according to any one of claims 1 to 3 and 6, characterized in that: The first outer tube unit is a polyether block polyamide tube; the second outer tube unit is a polyether block polyamide tube; the third outer tube unit is a nylon tube; and the connecting unit is a polyether block polyamide connecting piece.

9. The novel pipeline according to any one of claims 4 to 5 and 7, characterized in that: The first outer tube unit is a polyether block polyamide tube; the second outer tube unit is a polyether block polyamide tube; the third outer tube unit is a nylon tube; the connecting unit is a polyether block polyamide connecting piece; the reinforcing unit is a stainless steel reinforcing piece; and the smooth tube unit is a polytetrafluoroethylene tube.

10. A submarine pipeline system, characterized in that: include: At least one novel pipeline as claimed in any one of claims 1 to 9; At least one pipeline structure, the pipeline structure is connected to the joint unit of the novel pipeline.

Images