Pipeline external protection mechanism in extreme environment

Abstract

The utility model relates to the technical field of conveying pipeline protection, and discloses a pipeline external protection mechanism in an extreme environment, which comprises a pipeline, two groups of mounting flanges and a protection component. According to the pipeline external protection mechanism in the extreme environment, the outer side of the pipeline is sleeved with a set of sleeves, the two ends of the sleeves achieve sealing of the contact portions of the pipeline and the sleeves through sealing assemblies, temperature loss caused by air convection is reduced, meanwhile, through the multiple sets of annular pipes in the pipeline and argon filled in the annular pipes and the heat preservation cavity, the temperature loss caused by air convection is reduced; meanwhile, through supporting and shaping of the annular pipe, it is guaranteed that the whole sleeve is not prone to deformation, the annular groove formed in the outer side of the sleeve can guide rain and snow accumulated at the top end of the sleeve to flow downwards, the rain and snow are prevented from being accumulated at the top of the pipeline, and the service life of the sleeve is prolonged. And therefore, the safe use performance of the whole pipeline under extreme climate conditions is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a conveying pipeline protection technical field, concretely is a pipeline external protection mechanism under extreme environment. BACKGROUND

[0002] Natural gas pipeline refers to the pipeline that transports natural gas from the mining site or processing plant to the city gas distribution center or industrial enterprise user, also known as gas pipeline, and the natural gas pipeline is generally buried underground, and the heat preservation effect is good, but a part of it needs to be exposed to the air, and the exposed pipeline needs to be wrapped and protected from freezing, especially the environment where the natural gas pipeline is transported is mostly in the wild, and it is easy to cause damage to the pipeline exposed to the air under the condition of strong convective weather such as heavy rain, heavy snow and hail, thereby affecting the safe transportation of natural gas in the pipeline.

[0003] According to a natural gas conveying pipeline external anti-freezing protection device (announcement number: CN216479580U) disclosed, in the above application, the water in the heating water tank is heated through the arc-shaped light collector, then the water pump is opened, the water in the circulating water pipe is circulated under the driving of the water pump, the water in the circulating water pipe is communicated with the water in the heating water pipe, so the water pump circulates the hot water in the heating water tank to heat the outer surface of the pipeline main body, and the protection box serves as heat preservation, thereby achieving the effect of preventing the gas pipeline from freezing.

[0004] However, the length of the part of the natural gas pipeline exposed to the air cannot be estimated, and in the actual laying process of the natural gas pipeline, the heating protection device of the above-mentioned equipment cannot be popularized to the entire laying area of the natural gas pipeline in terms of economy and actual operation, and simply wrapping the pipeline with heat preservation materials cannot achieve high performance and service life in response to extreme weather.

[0005] The above content is only used to assist in understanding the technical scheme of the utility model, and does not mean that the above content is the closest prior art. UTILITY MODEL CONTENT

[0006] The utility model aims at providing a pipeline external protection mechanism under extreme environment to solve the problems in the above background technology, and achieves the above-mentioned purpose, and the utility model provides the following technical scheme: a pipeline external protection mechanism under extreme environment, comprising a pipeline, further comprising:

[0007] Two groups of mounting flanges are arranged at both ends of the pipeline for butt joint installation between multiple pipelines and ensuring the connection of the pipeline;

[0008] The protection assembly is arranged on the arc-shaped outer wall of the pipeline for heat preservation and pressure resistance of the pipeline inner cavity;

[0009] The protective assembly comprises:

[0010] The sleeve is sleeved on the arc-shaped outer surface of the pipeline and is used for shielding and protecting the outer surface of the pipeline in all directions and for sealing and heat preservation.

[0011] The two groups of sealing assemblies are arranged on the outer surfaces of the two ends of the pipeline respectively and are used for sealing the connection between the pipeline and the end of the sleeve.

[0012] The several groups of down-flow assemblies are arranged in a linear array on the arc-shaped outer wall of the sleeve and are used for downwardly draining the accumulated snow and rainwater on the outer surface of the sleeve.

[0013] Preferably, the sleeve comprises:

[0014] The heat preservation cavity is arranged on the arc-shaped inner wall of the sleeve and is used for forming a heat-insulated space inside the sleeve.

[0015] The several groups of annular pipes are arranged in a linear array on the arc-shaped inner surface of the heat preservation cavity and are used for providing another heat preservation space in the heat preservation cavity and for bearing the extrusion from the outside of the sleeve.

[0016] The several arc-shaped openings are arranged on the arc-shaped outer surface of the annular pipe close to the pipeline and are used for improving the pressure bearing capacity of the annular pipe and for ensuring the air permeability of the gaps between the several groups of annular rings.

[0017] The two groups of connecting pipes are fixedly connected to the side arc-shaped surfaces of the annular pipe and are used for butt-jointing the several groups of annular pipes.

[0018] Preferably, the bottom arc-shaped outer wall of the sleeve is provided with an injection opening, and the inside of the annular pipe and the inside of the heat preservation cavity are filled with argon.

[0019] Preferably, the sealing assembly comprises:

[0020] The two groups of butt-joint rings are fixedly arranged on the arc-shaped outer walls of the two ends of the sleeve and are used for butt-jointing the sleeve and the mounting flange.

[0021] The butt-joint groove is arranged on the outer surface of the mounting flange close to the center of the pipeline and is used for butt-jointing the mounting flange and the butt-joint ring.

[0022] The three groups of butt-joint ears are fixedly arranged on the arc-shaped outer walls of the butt-joint rings.

[0023] The three groups of ear grooves are arranged on the arc-shaped outer surfaces of the butt-joint groove and are used for aligning and positioning the three groups of butt-joint ears.

[0024] The two groups of annular sealing grooves are arranged on the arc-shaped outer walls of the two ends of the pipeline respectively, and the arc-shaped inner surfaces of the annular sealing grooves are fixedly provided with silica gel rings.

[0025] Two sets of annular blocks are fixedly installed on the arc-shaped inner walls at both ends of the sleeve to insert into the annular sealing groove to achieve a seal at the connection between the pipe and the sleeve. The outer walls on the left and right sides of the annular blocks are provided with serrated grooves to improve the gripping and sealing effect between the annular blocks and the silicone ring.

[0026] Preferably, the opening of the serrated groove is inclined toward the side away from the center of the pipe.

[0027] Preferably, the downstream component includes:

[0028] An annular groove is formed on the arc-shaped outer wall of the sleeve to create a flow channel from top to bottom on the arc-shaped outer wall of the sleeve.

[0029] Multiple sets of arc-shaped blocks are fixedly installed in a circumferential array on the arc-shaped inner surface of the annular groove to enhance the deformation resistance of the annular groove.

[0030] The C-shaped groove is located in the gap between the arc-shaped block and the inner wall of the bottom of the annular groove, providing space for the downward flow of rain and snow within the annular groove.

[0031] Preferably, the C-shaped groove is located at the bottom center of the arc-shaped block.

[0032] Compared with the prior art, the beneficial effects of this utility model are:

[0033] This invention features a sleeve fitted over the outside of a pipeline, with sealing components at both ends to seal the contact points between the pipeline and the sleeve, reducing temperature loss due to air convection. Simultaneously, several annular pipes and argon gas filling the interior and insulation cavity provide continuous insulation to the outside of the pipeline, minimizing heat loss of the internal medium during transport. Furthermore, the annular pipes provide support and shape, preventing easy deformation of the sleeve. The annular grooves on the outside of the sleeve guide rain and snow accumulated at the top downwards, preventing accumulation at the top of the pipeline, thus improving the pipeline's safe operation under extreme weather conditions. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0035] Figure 2 This is an exploded view of the present invention;

[0036] Figure 3 This is a schematic diagram of the cross-sectional structure of the sleeve of this utility model;

[0037] Figure 4 This is a partial cross-sectional view of the sleeve structure of this utility model;

[0038] Figure 5 This is a schematic diagram of a partial explosion at the end of the pipe of this utility model;

[0039] Figure 6 This is a schematic diagram of the annular tube structure of this utility model;

[0040] Figure 7 This is a partially enlarged schematic diagram of the sleeve of this utility model.

[0041] Figure descriptions: 1-Pipe; 2-Mounting flange; 3-Protective assembly; 31-Sleeve; 311-Insulation cavity; 312-Annular pipe; 313-Arc-shaped opening; 314-Connecting pipe; 32-Sealing assembly; 321-Butt ring; 3211-Butt groove; 3212-Ear groove; 3213-Butt ear; 322-Annular sealing groove; 3221-Silicone ring; 323-Annular block; 3231-Serrated groove; 33-C-shaped groove; 331-Annular groove; 332-Arc-shaped block; 333-C-shaped groove. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] Please see Figures 1-7 This utility model provides a technical solution: an external protection mechanism for pipelines under extreme environments, including a pipeline 1, and further comprising:

[0044] Two sets of mounting flanges 2 are respectively installed at both ends of pipe 1 for connecting and installing multiple sets of pipe 1 and ensuring the connection of pipe 1;

[0045] The protective component 3 is installed on the arc-shaped outer wall of the pipe 1 to provide thermal insulation and pressure protection for the inner cavity of the pipe 1.

[0046] Among them, protective component 3 includes:

[0047] Sleeve 31 is fitted onto the arc-shaped outer surface of pipe 1 to provide all-round shielding protection and sealing insulation for the outer surface of pipe 1.

[0048] Two sets of sealing components 32 are respectively disposed on the outer surfaces of both ends of the pipe 1, and are used to seal the connection between the pipe 1 and the end of the sleeve 31;

[0049] Several groups of down-flow components 33 are evenly arranged in linear array on the arc-shaped outer wall of the sleeve 31, and are used for downwardly draining the snow and rainwater that may accumulate on the outer surface of the sleeve 31.

[0050] In an embodiment of the utility model, the sleeve 31 comprises:

[0051] The heat preservation cavity 311 is arranged on the arc-shaped inner wall of the sleeve 31, and is used for forming a heat insulation space in the sleeve 31.

[0052] The several groups of annular pipes 312 are fixedly installed in linear array on the arc-shaped inner surface of the heat preservation cavity 311, and are used for providing another heat preservation space in the heat preservation cavity 311 and bearing the extrusion on the outer side of the sleeve 31.

[0053] The several arc-shaped openings 313 are arranged on the arc-shaped outer surface of the annular pipe 312 close to the pipeline 1, and are used for improving the pressure bearing capacity of the annular pipe 312 and ensuring the air permeability of the gap between the several groups of annular pipes 312.

[0054] The two groups of connecting pipes 314 are fixedly connected to the side arc-shaped surfaces of the annular pipe 312, and are used for butt joint installation of the several groups of annular pipes 312.

[0055] In addition, the injection port is arranged on the bottom arc-shaped outer wall of the sleeve 31, and the inside of the annular pipe 312 and the inside cavity of the heat preservation cavity 311 are filled with argon. Argon is an inert gas, has stable chemical properties and low thermal conductivity, can effectively slow down the heat conduction speed and reduce the heat transfer coefficient, and has relatively low value itself. The cost of industrial production using argon for heat preservation is lower, and the injection port can conveniently supplement the argon in the sleeve 31, so as to ensure the service life and use effect of the device as a whole.

[0056] In the embodiment of the utility model, the sealing assembly 32 comprises:

[0057] The two groups of butt joint rings 321 are fixedly installed on the two end arc-shaped outer walls of the sleeve 31, and are used for butt joint installation of the sleeve 31 and the mounting flange 2.

[0058] The butt joint groove 3211 is arranged on the outer surface of the mounting flange 2 close to the center of the pipeline 1, and is used for butt joint installation of the mounting flange 2 and the butt joint ring 321.

[0059] The three groups of butt joint ears 3213 are fixedly installed on the arc-shaped outer wall of the butt joint ring 321.

[0060] The three groups of ear grooves 3212 are arranged on the arc-shaped outer surface of the butt joint groove 3211, and are used for calibration positioning with the three groups of butt joint ears 3213.

[0061] Two groups of annular sealing grooves 322 are respectively arranged on the arc-shaped outer walls of the two ends of the pipeline 1, and the arc-shaped inner surfaces of the annular sealing grooves 322 are fixedly installed with silica gel rings 3221;

[0062] Two groups of annular blocks 323 are respectively fixedly installed on the arc-shaped inner walls of the two ends of the sleeve 31 to be inserted into the annular sealing grooves 322 to realize the sealing of the connection between the pipeline 1 and the sleeve 31, and the outer walls of the left and right sides of the annular blocks 323 are provided with sawtooth grooves 3231 for improving the gripping sealing effect between the annular blocks 323 and the silica gel rings 3221.

[0063] The openings of the sawtooth grooves 3231 are arranged in an inclined manner towards the side away from the center of the pipeline 1, so that the sawtooth grooves 3231 can not only tightly grip the silica gel rings 3221, but also will not cause excessive damage to the surface of the silica gel rings 3221 when the sleeve 31 is separated from the pipeline 1, thereby ensuring the service life of the silica gel rings 3221.

[0064] The downstream assembly 33 comprises:

[0065] An annular groove 331 is arranged on the arc-shaped outer wall of the sleeve 31 to form a downward flow channel at the arc-shaped outer wall of the sleeve 31;

[0066] A plurality of arc-shaped blocks 332 are fixedly installed on the arc-shaped inner surface of the annular groove 331 in a circumferential array to enhance the deformation resistance of the annular groove 331;

[0067] A C-shaped groove 333 is arranged in the gap between the arc-shaped blocks 332 and the inner wall of the bottom of the annular groove 331 to provide space for the downward flow of rain and snow in the annular groove 331.

[0068] At the same time, the C-shaped groove 333 is arranged at the center of the bottom of the arc-shaped block 332, so that the rainwater or snowwater in the annular groove 331 can flow downward more smoothly, avoiding the butt joint at the top of the pipeline 1, thereby affecting the safe use of the pipeline 1.

[0069] The working principle is that the sleeve 31 is sleeved with the pipeline 1, and finally the sleeve 31 is completely sleeved outside the pipeline 1, at this time the sleeve 31 is rotated, so that the butt joint ring 321 at both ends of the sleeve 31 can be aligned and inserted into the mounting flange 2, the worker tightens the bolt through the through hole on the mounting flange 2, so that the butt joint ring 321 is fixedly installed on the mounting flange 2, thereby providing shielding and protection outside the pipeline 1, then the combination of the pipeline 1 and the sleeve 31 is transported to the laying site required to be installed, the mounting flange 2 is butt jointed with the mounting flange 2 arranged at the end of the other pipeline 1, and the pipeline 1 is fixedly installed through the support frame or the fixing frame, so that the pipeline 1 will not be deformed in the vertical direction, after the pipeline 1 is fixedly installed, the argon is injected into the heat preservation cavity 311 and the annular pipe 312 through the injection port arranged at the bottom of the sleeve 31, so that two groups of relatively independent heat exchange layers are formed in the heat preservation cavity 311, so as to isolate the heat exchange channel between the inside and the outside of the pipeline 1, reduce the heat loss of the pipeline 1 in the medium transportation process, and when extreme weather is encountered, the rainwater or snow water accumulated on the top of the pipeline 1 will flow downward along the annular groove 331, and will not directly generate great pressure on the pipeline 1, thereby causing deformation of the pipeline 1 or the sleeve 31, affecting the transportation heat preservation effect of the pipeline 1, meanwhile, the annular pipe 312 is arranged, so as to improve the pressure resistance of the sleeve 31, and ensure the use safety of the whole device in extreme environment.

Claims

1. A protection mechanism for the exterior of a pipeline in an extreme environment, comprising a pipeline (1), characterized in that: Also include: Two sets of mounting flange (2) are provided at both ends of the pipeline (1), used for butt joint installation between multiple sets of pipelines (1) and ensure the connection of the pipeline (1); Protective assembly (3) is arranged on the arc outer wall of the pipeline (1), which is used for heat preservation and pressure protection of the inner cavity of the pipeline (1); Wherein, the protective assembly (3) comprises: Sleeve (31) is sleeved on the arc outer surface of the pipeline (1), which is used for all-round shielding protection and closed heat preservation of the outer surface of the pipeline (1); Two sets of sealing assembly (32) are arranged on the outer surface of the pipeline (1) at both ends, which are used for sealing the connection between the pipeline (1) and the sleeve (31) end; A number of groups of downstream components (33) are arranged in linear array on the arc outer wall of the sleeve (31), which are used for downward drainage of the snow and rain that may accumulate on the outer surface of the sleeve (31).

2. A pipe external protection mechanism for use in an extreme environment according to claim 1, wherein: The sleeve (31) comprises: Heat preservation cavity (311) is opened on the arc inner wall of the sleeve (31), which is used to form a heat insulation space inside the sleeve (31); A number of groups of annular pipes (312) are arranged in linear array and fixedly installed on the arc inner surface of the heat preservation cavity (311), which are used to provide another heat preservation space in the heat preservation cavity (311) and bear the extrusion on the outside of the sleeve (31); A number of arc mouths (313) are opened on the arc outer surface of the annular pipe (312) close to the pipeline (1), which are used to improve the pressure bearing capacity of the annular pipe (312) and ensure the air permeability of the gap between the annular pipes (312); Two sets of connecting pipes (314) are fixedly connected to the side arc surface of the annular pipe (312), which are used for butt joint installation of the annular pipes (312).

3. A pipe exterior protection mechanism in an extreme environment according to claim 2, characterized in that: The bottom arc outer wall of the sleeve (31) is provided with an injection port, and the inside of the annular pipe (312) and the inside cavity of the heat preservation cavity (311) are filled with argon.

4. The pipe exterior protection mechanism for use in an extreme environment according to claim 1, wherein: The sealing assembly (32) comprises: Two sets of butt rings (321) are fixedly installed on the two end arc outer walls of the sleeve (31), which are used for butt joint installation of the sleeve (31) and the mounting flange (2); Butt joint groove (3211) is opened on the outer surface of the mounting flange (2) close to the center of the pipeline (1), which is used for butt joint installation of the mounting flange (2) and the butt ring (321); Three sets of butt ears (3213) are fixedly installed on the arc outer wall of the butt ring (321); Three sets of ear grooves (3212) are opened on the arc outer surface of the butt joint groove (3211), which are used for calibration positioning with the three sets of butt ears (3213); Two sets of annular sealing grooves (322) are opened on the arc outer walls of the two ends of the pipeline (1), and the arc inner surface of the annular sealing groove (322) is fixedly installed with a silica gel ring (3221); Two groups of annular blocks (323) are fixedly installed on the inner arc walls of the two ends of the sleeve (31) respectively to be inserted into the annular sealing groove (322) to realize the sealing of the connection between the pipeline (1) and the sleeve (31), and the outer walls of the left and right sides of the annular blocks (323) are provided with sawtooth grooves (3231) for improving the gripping sealing effect between the annular blocks (323) and the silica gel ring (3221).

5. A pipe exterior protection mechanism in an extreme environment according to claim 4, characterized in that: The openings of the sawtooth grooves (3231) are provided in an inclined manner towards the side away from the center of the pipeline (1).

6. A pipe exterior protection mechanism in an extreme environment according to claim 1, characterized in that: The downflow assembly (33) comprises: An annular groove (331) is provided on the arc outer wall of the sleeve (31) to form a downward flow channel at the arc outer wall of the sleeve (31); A plurality of groups of arc blocks (332) are fixedly installed on the arc inner surface of the annular groove (331) in a circumferential array to enhance the deformation resistance of the annular groove (331); A C-shaped groove (333) is provided at the gap between the arc block (332) and the inner wall of the bottom of the annular groove (331) to provide space for the downward flow of rain and snow in the annular groove (331).

7. A pipe exterior protection mechanism in an extreme environment according to claim 6, characterized in that: The C-shaped groove (333) is provided at the bottom center of the arc block (332).

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