Liquefied natural gas (LNG) pipeline protection device

Abstract

The utility model belongs to the technical field of LNG pipelines, and particularly relates to an LNG pipeline protection device which comprises an LNG pipeline body, the LNG pipeline body is sleeved with a protection sleeve, the protection sleeve is composed of two sets of semicircular plates, the two sets of semicircular plates are spliced into a ring shape through a connecting assembly, a pressure-resistant assembly is arranged between the semicircular plates and the LNG pipeline body, and the pressure-resistant assembly is connected with the LNG pipeline body. The LNG pipeline comprises an LNG pipeline body, the LNG pipeline body is provided with a semicircular plate, the semicircular plate is arranged between the LNG pipeline body and the protection sleeve, so that the anti-pressure capacity of the LNG pipeline body can be improved, the outer surface of the semicircular plate is provided with a waterproof layer, and the outer surface of the waterproof layer is provided with an anti-corrosion layer. The LNG pipeline body is sleeved with the protection sleeve, and the anti-pressure assembly is arranged between the LNG pipeline body and the protection sleeve, so that the anti-pressure capacity of the LNG pipeline body is improved; the LNG pipeline has the advantages that the problem that an existing LNG pipeline is limited in anti-pressure capacity can be solved, the probability of deformation or damage of the LNG pipeline can be reduced when the LNG pipeline is collided, and the service life of the LNG pipeline is prolonged to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of LNG pipelines, in particular to a LNG pipeline protection device. Background Art

[0002] LNG refers to liquefied natural gas, which is mainly composed of methane and is recognized as the cleanest fossil energy on earth. It is colorless, odorless, non-toxic and non-corrosive. Its volume is about 1 / 625 of the volume of the same amount of gaseous natural gas, and the mass of liquefied natural gas is only about 45% of the same volume of water. Its manufacturing process is to purify the natural gas produced by the gas field first, and then transport it by liquefied natural gas ship after a series of ultra-low temperature liquefaction. After burning, liquefied natural gas has very little air pollution and releases a lot of heat, so liquefied natural gas is a relatively advanced energy source. The LNG pipeline is a pipeline used to transport LNG.

[0003] When the existing LNG pipeline is hit, it will be deformed or damaged. The reason is that the existing LNG pipeline has limited pressure resistance. Therefore, an LNG pipeline protection device is invented. Utility Model Content

[0004] In view of the above problems and / or the problems existing in the existing LNG pipeline protection devices, the present utility model is proposed.

[0005] Therefore, the purpose of the present invention is to provide an LNG pipeline protection device that can solve the above-mentioned existing problems.

[0006] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0007] The LNG pipeline protection device comprises an LNG pipeline body, on which a protective sleeve is sleeved, the protective sleeve is composed of two groups of semicircular plates, and the two groups of semicircular plates are spliced ​​into a ring shape through a connecting component, and a pressure-resistant component is provided between the semicircular plates and the LNG pipeline body to improve the pressure resistance of the LNG pipeline body.

[0008] As a preferred solution of the LNG pipeline protection device described in the utility model, the outer surface of the semicircular plate is provided with a waterproof layer, and the outer surface of the waterproof layer is provided with an anti-corrosion layer.

[0009] As a preferred solution of the LNG pipeline protection device described in the utility model, the pressure-resistant component includes:

[0010] A first semi-annular plate, wherein a plurality of first semi-annular plates are fixedly mounted on the inner surface of the semi-circular plate;

[0011] Second semi-annular plates: the outer surface of the LNG pipeline body is in contact with a plurality of second semi-annular plates.

[0012] As a preferred solution of the LNG pipeline protection device described in the utility model, the pressure-resistant component also includes:

[0013] Telescopic rods, a plurality of telescopic rods are fixedly installed between the first semi-annular plate and the second semi-annular plate;

[0014] A spring, wherein the spring is sleeved on the telescopic rod, and two ends of the spring are respectively fixedly connected to the first semi-annular plate and the second semi-annular plate;

[0015] Dampers: a plurality of dampers are fixedly installed between the first semi-annular plate and the second semi-annular plate.

[0016] As a preferred solution of the LNG pipeline protection device described in the utility model, flanges are fixedly installed at both ends of the semicircular plate, and the two groups of flanges are connected together through a connecting assembly, and connecting plates are fixedly installed at both ends of two symmetrical groups of semicircular plates, and the two groups of connecting plates are connected together through a connecting assembly.

[0017] As a preferred solution of the LNG pipeline protection device described in the utility model, the connection assembly includes:

[0018] Through holes, both the flange and the connecting plate are provided with through holes;

[0019] a screw, one end of which passes through the through hole;

[0020] The stud is fixedly mounted on one end of the screw, and the thread directions on the stud and the screw are arranged to be opposite.

[0021] As a preferred solution of the LNG pipeline protection device described in the utility model, the connection assembly further includes:

[0022] a first nut threadably connected to one end of the screw;

[0023] A second nut is threadedly connected to the stud.

[0024] Compared with existing technologies:

[0025] 1. By arranging a protective sleeve on the LNG pipeline body and arranging a pressure-resistant component between the LNG pipeline body and the protective sleeve, the pressure resistance of the LNG pipeline body can be improved, which can solve the problem of limited pressure resistance of the existing LNG pipeline, and further reduce the probability of deformation or damage of the LNG pipeline when the LNG pipeline is hit, thereby improving the service life of the LNG pipeline to a certain extent.

[0026] 2. The protective cover is assembled and installed by setting a connecting component, which can prevent the protective cover from loosening, shaking, etc. after long-term work, thereby improving the use stability of the protective cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front view schematic diagram of the structure of the utility model;

[0028] Figure 2 For this utility model Figure 1 A schematic diagram of the structure enlargement in the middle;

[0029] Figure 3 It is a side view schematic diagram of the structure of the utility model;

[0030] Figure 4 For this utility model Figure 3 Enlarged schematic diagram of the structure at point B in the middle.

[0031] In the figure: LNG pipeline body 10, semicircular plate 20, waterproof layer 21, anti-corrosion layer 22, first semi-annular plate 30, second semi-annular plate 31, telescopic rod 32, spring 33, damper 34, flange 40, connecting plate 50, through hole 61, screw 62, stud 63, first nut 64, second nut 65. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] This utility model provides a LNG pipeline protection device, please refer to Figure 1-Figure 4 , including an LNG pipeline body 10, on which a protective sleeve is sleeved, the protective sleeve is composed of two groups of semicircular plates 20, and the two groups of semicircular plates 20 are spliced ​​into a ring shape through a connecting component, and a pressure-resistant component is provided between the semicircular plate 20 and the LNG pipeline body 10 to improve the pressure resistance of the LNG pipeline body 10, and a waterproof layer 21 is provided on the outer surface of the semicircular plate 20, and the waterproof layer 21 is formed by solidifying a waterproof coating. By setting the waterproof layer 21, it is possible to prevent fluid from flowing into the protective sleeve, and an anti-corrosion layer 22 is provided on the outer surface of the waterproof layer 21, and the anti-corrosion layer 22 is formed by solidifying an anti-corrosion coating. By setting the anti-corrosion layer 22, it is possible to increase the service life of the protective sleeve.

[0034] The pressure-resistant assembly includes: a first semi-annular plate 30, a second semi-annular plate 31, a telescopic rod 32, a spring 33, and a damper 34;

[0035] A plurality of first semi-annular plates 30 are fixedly installed on the inner surface of the semicircular plate 20, and a plurality of second semi-annular plates 31 are in contact with the outer surface of the LNG pipeline body 10. A plurality of telescopic rods 32 are fixedly installed between the first semi-annular plates 30 and the second semi-annular plates 31. A spring 33 is sleeved on the telescopic rod 32, and both ends of the spring 33 are fixedly connected to the first semi-annular plate 30 and the second semi-annular plate 31 respectively. A plurality of dampers 34 are fixedly installed between the first semi-annular plate 30 and the second semi-annular plate 31.

[0036] Flanges 40 are fixedly installed at both ends of the semicircular plate 20, and the two groups of flanges 40 are connected together by a connecting component. Connecting plates 50 are fixedly installed at both ends of the two symmetrical groups of semicircular plates 20, and the two groups of connecting plates 50 are connected together by a connecting component. A sealing ring can be set at the connection between the two groups of flanges 40 as required. In addition, a sealing strip can also be set between the two groups of connecting plates 50 as required.

[0037] The connection assembly includes: a through hole 61, a screw 62, a stud 63, a first nut 64, and a second nut 65;

[0038] A through hole 61 is provided on the flange 40 and the connecting plate 50, one end of the screw 62 passes through the through hole 61, and the stud 63 is fixedly installed on one end of the screw 62, and the thread directions on the stud 63 and the screw 62 are set to be opposite, so that the tightening directions of the first nut 64 and the second nut 65 are opposite, the first nut 64 is threadedly connected to one end of the screw 62, and the second nut 65 is threadedly connected to the stud 63, wherein one end of the screw 62 is located in the first nut 64, and the diameter of the stud 63 is smaller than the diameter of one end of the screw 62.

[0039] During specific use, a person skilled in the art will sleeve the two groups of semicircular plates 20 on the LNG pipeline body 10, and make the two groups of connecting plates 50 contact each other, then make the screw 62 pass through the through hole 61, and thread the first nut 64 on one end of the screw 62 until the first nut 64 is in close contact with the connecting plate 50, and then thread the second nut 65 on the stud 63 until the second nut 65 is in close contact with the first nut 64, so that the protective sleeve can be sleeved on the LNG pipeline body 10, and at this time, the spring 33 is in a deformed state;

[0040] Afterwards, repeat the above steps to install another set of protective sleeves, then make the two adjacent sets of flanges 40 contact each other, then pass the screw 62 through the through hole 61, and thread the first nut 64 on one end of the screw 62 until the first nut 64 is in close contact with the flange 40, then thread the second nut 65 on the stud 63 until the second nut 65 is in close contact with the first nut 64, so far, another set of protective sleeves can be arranged on the LNG pipeline body 10, and two adjacent sets of protective sleeves can be connected, and this cycle can be repeated to arrange several protective sleeves on the LNG pipeline body 10 to protect the LNG pipeline body 10.

[0041] When the LNG pipeline body 10 is squeezed or collided, the spring 33 thereof will continue to deform, and when the spring 33 continues to deform, elastic force will be generated to offset the squeezing or collision force to a certain extent.

[0042] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An LNG pipeline protection device, comprising an LNG pipeline body (10), characterized in that: The LNG pipeline body (10) is covered with a protective sleeve, which is composed of two groups of semicircular plates (20), and the two groups of semicircular plates (20) are spliced ​​into a ring shape through a connecting component, and a pressure-resistant component is provided between the semicircular plates (20) and the LNG pipeline body (10) to improve the pressure resistance of the LNG pipeline body (10).

2. The LNG pipeline protection device according to claim 1, characterized in that: The outer surface of the semicircular plate (20) is provided with a waterproof layer (21), and the outer surface of the waterproof layer (21) is provided with an anti-corrosion layer (22).

3. The LNG pipeline protection device according to claim 1, characterized in that: The pressure-resistant component comprises: A first semi-annular plate (30), a plurality of first semi-annular plates (30) being fixedly mounted on the inner surface of the semi-circular plate (20); Second semi-annular plates (31), the outer surface of the LNG pipeline body (10) is in contact with a plurality of second semi-annular plates (31).

4. The LNG pipeline protection device according to claim 3, characterized in that: The pressure-resistant component also includes: Telescopic rods (32), a plurality of telescopic rods (32) are fixedly installed between the first semi-annular plate (30) and the second semi-annular plate (31); A spring (33), wherein the spring (33) is sleeved on the telescopic rod (32), and two ends of the spring (33) are respectively fixedly connected to the first semi-annular plate (30) and the second semi-annular plate (31); Damper (34), a plurality of dampers (34) are fixedly installed between the first semi-annular plate (30) and the second semi-annular plate (31).

5. The LNG pipeline protection device according to claim 1, characterized in that: Both ends of the semicircular plate (20) are fixedly mounted with flanges (40), and the two groups of flanges (40) are connected together via a connecting assembly; both ends of the two symmetrical groups of semicircular plates (20) are fixedly mounted with connecting plates (50), and the two groups of connecting plates (50) are connected together via a connecting assembly.

6. The LNG pipeline protection device according to claim 5, characterized in that: The connection component comprises: A through hole (61), wherein the flange (40) and the connecting plate (50) are both provided with a through hole (61); a screw (62), one end of the screw (62) passing through the through hole (61); A stud (63) is fixedly mounted on one end of the screw (62), and the thread directions of the stud (63) and the screw (62) are opposite.

7. The LNG pipeline protection device according to claim 6, characterized in that: The connection component also includes: a first nut (64), wherein the first nut (64) is threadedly connected to one end of the screw (62); A second nut (65), wherein the second nut (65) is threadedly connected to the stud (63).

Images